• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    TOUCH AND BUILT-IN BIKE SHOES. The present invention provides a toecap structure and footwear having the built-in toecap that does not hinder foot movement such as when walking while protecting toes against lateral collision with an object such as a wheel on a weight-bearing cart. The toecap to cover toes in a state of being embedded in a shoe spout includes a cup-shaped wrap body that is formed by connecting a front end wall, side walls on two sides and an upper face wall with a smooth curved face, and an extension sidewall disposed at least on a sidewall such as extending backwards from a rear edge edge of the sidewall. Footwear with a built-in toe can sufficiently protect the toe even when an impact is applied from the outside (ie the little toe) direction of the toe whose protection is not sufficient in a normal built-in toe shoe .
    公开号:BR112013011200B1
    申请号:R112013011200-0
    申请日:2011-07-06
    公开日:2020-07-21
    发明作者:Yoshinori Sakurai
    申请人:Midori Anzen Co., Ltd.；
    IPC主号:
    专利说明:

    [0001] [001] The present invention relates to a toe and a toe shoe. PREVIOUS TECHNIQUE
    [0002] [002] A safety footwear having a hard toe embedded in a toe section is known. Safety footwear usage has increased since around 1955 (ie, around Showa 30) to prevent foot accidents. In 1972 (ie Showa 47), it became mandatory under Article 558 of the Legislation on Industrial Safety and Hygiene to wear safety shoes, and the standard of the same was established at the same time (see Non-Patent Document 1). In addition, in many countries around the world, similar standards have been established (see Non-Patent Document and others).
    [0003] [003] A toecap is embedded in a toe section of a shoe to protect the toes, which is the most important element of safety shoes and protective sports shoes, and toe performance and strength are defined in detail in the standards indicated above. However, there has been a problem where a fifth toe (ie, a little toe) cannot be protected because of a reason in association with folding the shoe. In this way, accidents injuring the little toe caused by a trolley carrying weight and others more that run over a little toe laterally are not negligible between accidents of foot.
    [0004] [004] The material of a toecap varies from steel to resin, while the shape is shaped to have a cup-shaped wrap body (alternatively, described as arch-shaped or dome-shaped) that mainly covers a region toes from the base of a thumb, a border formed on a bottom face when folding the outer circumferential end inward, and an opening formed on a rear side to provide a foot entrance part, as illustrated in drawings of Patent Documents 1, 2 and 3. PREVIOUS TECHNICAL DOCUMENTS Patent Document
    [0005] [005] Patent document 1: Japanese patent 3776158;
    [0006] [006] Patent Document 2: Japanese Open Patent Application No. 2003-310307;
    [0007] [007] Patent Document 3: Japanese Open Patent Application No. 2004-41406. Non-Patent Document
    [0008] [008] Non-patent document 1: Japanese Industrial Standards JIS T 8101;
    [0009] [009] Non-patent document 2: International Standard ISO20344 "Personal protective equipment-Test methods for footwear" issued on August 1, 2004. SUMMARY OF THE INVENTION Problems to be solved by the invention
    [0010] [010] Safety shoes are shoes in which a toecap is embedded mainly to protect toes against falling objects, etc. at a location such as a construction site. Safety shoes are used not only at construction sites, but also at other workplaces such as a transport company's delivery center where a large amount of cargo is transported with operator-driven weight carts. Running over toes by a wheel on a weight cart often occurs in workplaces where weight carts are used. Weight trolleys having a wheel whose diameter is 20 cm or more and the load supported is 300 kg or heavier are used frequently. When the cart wheel collides with an operator in order to pass over a foot in the lateral direction, the cart wheel can hit the little toe side that is not covered by the toe especially as illustrated in figure 4, which can result in injury.
    [0011] [011] In the situation indicated above, injury to a little toe can be prevented by forming the toe cap large enough to cover the little toe. However, the toecap formed for full coverage of the toes including a little toe without changing the shape of the conventional toecap hinders the walking movement, since a rear opening edge of the toecap, which is a foot entrance, contacts an instep region during foot-folding movement. Therefore, conventional toe shoes and a built-in toe prioritize the movement function of a shoe over the protection of a foot around a little toe, which is sacrificed out of necessity.
    [0012] [012] The present invention is conceived in view of the aforementioned problems, and it is an objective of the present invention to provide various structures for a toecap and a shoe having the built-in toecap, which do not hinder foot movement such as walking and folding movement of toes while protecting toes against a load or impact applied laterally such as the collision of a wheel of a moving weight cart, in addition to having a function of protecting toes just like conventional toe caps. Troubleshooting Resources
    [0013] [013] To solve the problems indicated above, the present invention comprises; a shoe toecap to protect toes against loads and impacts of heavy items; the toe body is formed as a cup-shaped wrap body having a front end wall, left side wall, right side wall and an upper face wall forming a moderately continuous curved surface; a rear end edge of the side wall of a toe side of the toe extends backwards along a central part of a rear end edge of the upper face wall to cover one side of the little toe; the toecap is formed so as not to cover an upper surface of a region of the instep in order not to disturb the folding movement of a foot; an extended sidewall that does not exceed the height of the upper face wall is provided in order to protect the little toe from impact by a cart wheel that carries heavy loads and collides on the side of the little toe.
    [0014] [014] The cup-shaped wrap body mainly protects a toe region in front of the base of the thumb just like the conventional toe cap, and the side extension wall protects a little toe section that is not sufficiently protected by the conventional toecap. Furthermore, the toecap according to the present invention does not hinder walking and bending movement of the toes while protecting the little toe section.
    [0015] [015] To solve the problems indicated above, the present invention comprises; a built-in toe shoe to protect toes against loads and impacts of heavy items; a toecap body is formed as a cup-shaped wrap body having a front end wall, left side wall, right side wall and an upper face wall forming a moderately continuous curved surface; a rear end edge of the side wall of a toe toe side extends backwardly along a central part of a rear end edge of the top face to cover one side of the little toe; the toecap is formed so as not to cover an upper surface of a region of the instep in order not to disturb the folding movement of a foot; an extended sidewall that does not exceed the height of the upper face wall is provided in order to protect the little toe from impact by a cart wheel that carries heavy loads and collides on the side of the little toe.
    [0016] [016] The toe-toe shoe protects a section of toes of footwear such as a conventional toe-toe shoe, while the protection of an area in the vicinity of a little toe is enhanced by a toe function having the extension side wall, which was not suitable for conventional built-in toe shoes.
    [0017] [017] Furthermore, the toecap according to the present invention does not hinder walking and toe bending movement although protection in the vicinity of a little toe is improved.
    [0018] [018] Additionally, to solve the problems indicated above, the present invention comprises a toecap that covers toes in a state of being embedded in a shoe spout, the toecap having a cup-shaped wrap body formed by a wall front end, left side wall, right side wall and an upper face wall forming a moderately continuous curved surface, and an extension side wall arranged at least on one side wall to extend backwards beyond a rear end edge of the top face wall.
    [0019] [019] The toe cap according to the present invention protects a region of the toes in front of the base of the thumb such as the toe mentioned above while a little toe is protected by an extension sidewall, which does not was sufficiently protected in the conventional toecap.
    [0020] [020] Furthermore, the toe according to the present invention, since a region of the instep does not contact the toe firmly, walking and toe flexing movements are not hindered.
    [0021] [021] In addition, in the present invention, the rear end edge of the upper face wall of the toecap is arranged along a direction approximately perpendicular to a longitudinal direction.
    [0022] [022] Since the rear end edge of the top face wall is formed along the direction approximately perpendicular to the longitudinal direction, it is possible to provide the rear end edge in a position as far from the back as possible. In this way, a large area of the toe region can be covered by the toecap and the toes can be bent widely in the forward direction.
    [0023] [023] In addition, in the present invention, a section of the rear edge edge of the upper face wall of the toecap extending from the approximate center in the direction of a thumb side is arranged along a direction approximately perpendicular to a longitudinal direction. A top toe extension wall has a curved edge forming an inward arc that connects a rear end edge of the extension side wall and the vicinity of the center of the rear end edge of the top face wall, or an intermediate position between the proximity to the approximate center and the side wall on a little toe side.
    [0024] [024] By arranging the rear end edge section of the top face wall extending from the approximate center in the direction of the thumb side along the direction approximately perpendicular to the longitudinal direction, the rear end edge can be provided in such a position as far from the back as possible within an extent where the rear edge edge does not hinder the movement of the toe that bends widely forward.
    [0025] [025] Additionally, when arranging the upper extension wall to have a curved edge forming an inward arc that connects the rear end edge of the extension side wall in the vicinity of the approximate center of the rear end edge of the upper face wall, or the intermediate position between the proximity of the approximate center with the side wall on the little toe side, the toe folding movement is not hindered even when the toe is bent to displace a region of the instep to front as illustrated in figure 8 (b), while a side face and an upper face of a little toe can be covered, whose protection was not conventionally adequate.
    [0026] [026] Additionally, on the toecap of the present invention having the side wall extending, the rear end edge of the top face wall is arranged along a side direction approximately perpendicular to the longitudinal direction, and the top extension wall having an edge oblique edge connecting an intermediate position between a section closer to the little toe side than the center of the rear edge edge and the side wall on the little toe side with the vicinity of the back edge edge of the wall extension side.
    [0027] [027] According to the toecap of the present invention, as a basic shape, since the rear end edge of the upper face wall is arranged along the lateral direction approximately perpendicular to the longitudinal direction the rear end edge can be arranged to a position as far from the back as possible within the extent that the rear edge edge does not hinder the movement of the toe which bends widely in the forward direction.
    [0028] [028] Additionally, when arranging the upper extension wall having the oblique end edge that connects the intermediate position between the section closest to the little toe side than the center of the rear end edge and the side wall on the side toe with proximity to the rear edge edge of the extension side wall, toe folding movement is not disturbed even when the toe is bent to move a toe region forward as illustrated in figure 8 (b), while a side face and an upper face of a little toe can be covered, whose protection was not conventionally adequate.
    [0029] [029] Additionally, a shoe of the present invention has a toecap embedded in a shoe tip to cover a toe region. The toecap has a cup-shaped wrap body created by connecting a front end wall, side walls on two sides and an upper face wall forming continuously smooth curved faces, and an extension side wall arranged at least on one side wall to form a rear end edge of the side wall to be far behind a rear end edge of the top face wall.
    [0030] [030] The built-in toe shoes according to the present invention protects a region of toes located in front of the base of the thumb like the shoes mentioned above and at the same time protects a toe section with the wall side extension, which cannot be sufficiently protected by the conventional toe cap as shown in figure 4. Furthermore, according to the built-in toe shoes of the present invention, the toe cap does not strongly contact a region of the instep while protecting the little toe section. In this way, walking and folding toe movement are not hindered.
    [0031] [031] In addition, in the shoes according to the present invention, the rear edge edge of the upper face wall of the toecap is arranged along a direction approximately perpendicular to the longitudinal direction. By forming the rear edge edge of the toe cap face wall along the direction approximately perpendicular to the longitudinal direction, it becomes possible to position the rear edge edge as far from the back as possible. In this way, folding of shoes is not disturbed while the toe covers a large area of the toes.
    [0032] [032] Additionally, in the toe-toe shoe according to the present invention, a section of the rear end edge of the upper face wall extending from an approximate center in the direction of a thumb side is arranged along approximately one direction perpendicular to a longitudinal direction, and an upper extension wall having a curved edge forming an inward arc that connects the vicinity of the approximate center of the rear edge edge of the upper face wall or an intermediate position between the proximity of the approximate center and the sidewall on a little toe side with the vicinity of a rear edge edge of the extension sidewall is provided.
    [0033] [033] Since the rear edge edge section of the toecap top face wall extending from the approximate center in the direction of the thumb side is arranged along the direction approximately perpendicular to the longitudinal direction, the rear edge edge can be provided in a position as far from the back position as possible to the extent that the toe folding movement is not hindered even when the toe is bent to move the instep region forward such as illustrated in figure 8 (b).
    [0034] [034] Additionally, when arranging the upper extension wall to have the curved edge that forms the inward arc that connects the rear end edge of the extension side wall with the proximity of the approximate center of the rear end edge of the toecap or the intermediate position between the proximity of the approximate center and the lateral wall on the side of the little toe, it becomes possible to form a footwear in such a way that it does not hinder the toe folding movement while the lateral face and the upper face of the little toe are covered, whose protection was not conventionally adequate.
    [0035] [035] Additionally, in the built-in toe shoes according to the present invention, the rear end edge of the upper face wall is arranged along a lateral direction approximately perpendicular to the longitudinal direction, and an upper extension wall having an edge an oblique end is arranged, which connects the vicinity of the rear end edge of the extension sidewall with an intermediate position between a section closer to a little toe side than the center of the rear end edge of the extension wall. upper face and the side wall on the little toe side.
    [0036] [036] According to the toecap mounted on the built-in toecap shoes of the present invention, since the rear end edge of the upper face wall is arranged along the lateral direction approximately perpendicular to the longitudinal direction as a basic shape, the edge rear end can be provided in a position as far from the back as possible within the extent that the rear end edge does not hinder the toe bending movement even when the toe is bent to displace the toe region. chest standing forward as shown in figure 8 (b). Additionally, according to the built-in toe shoes of the present invention, the toe has the upper extension wall having the oblique end edge that connects an intermediate position between the section being closer to the little toe side than the center of the rear end edge and the side wall on the little toe side with the vicinity of the rear end edge of the extension side wall, and a side and an upper side of a little toe, whose protection was not adequate conventionally, it can be covered and protected without disturbing the toe folding movement. Effects of the Invention
    [0037] [037] The toecap having the extension side wall and the footwear to which the toecap is attached according to the present invention have an effect of being able to protect toes sufficiently even when an impact is applied from the outside (ie , the little toe) of the toe, whose protection was not adequate in a conventional toe-toed shoe. In addition, the toe and built-in toe shoes according to the present invention have an effect of not disturbing the foot folding movement while the toe is protected from impact from the outside as previously described. BRIEF DESCRIPTION OF THE DRAWINGS
    [0038] [038] Figure 1 (a) is a perspective view of a toecap according to the present invention and figure 1 (b) is a perspective view illustrating another example of the toecap according to the present invention.
    [0039] [039] Figure 2 (a) is an explanatory view illustrating the relationship between the toecap according to the present invention and a foot. Figure 2 (b) is an explanatory view illustrating another example of the toecap according to the present invention.
    [0040] [040] Figure 3 is an explanatory view illustrating the relationship between the toecap according to the present invention and a foot.
    [0041] [041] Figure 4 is an explanatory view illustrating the relationship between a conventional toecap and a foot.
    [0042] [042] Figure 5 is an explanatory view illustrating another example of the toecap according to the present invention.
    [0043] [043] Figure 6 (a) is an explanatory view (that is, a sectional side view) indicated in the Japanese Industrial Standards standard. Figure 6 (b) is an explanatory view (ie, a rear view) indicated in the Japanese Industrial Standards standard.
    [0044] [044] Figure 7 (a) is a plan view of another example of the toecap according to the present invention. Figure 7 (b) is a sectional side view of the other example of the toecap according to the present invention. Figure 7 (c) is a rear view of the other example of the toecap according to the present invention.
    [0045] [045] Figure 8 (a) is an explanatory view with respect to a state of use of another toe cap according to the present invention. Figure 8 (b) is an explanatory view with respect to a state of use of the other toe cap according to the present invention.
    [0046] [046] Figure 9 (a) is a sectional view illustrating the relationship between a foot and the toecap as seen from the side. Figure 9 (b) is an explanatory view illustrating the relationship between a foot and the toecap as seen from the top. Figure 9 (c) is an explanatory view illustrating the relationship between a foot and a toecap. Figure 9 (d) is an explanatory view illustrating the relationship between a foot and the bottom of a conventional toecap.
    [0047] [047] Figure 10 (a) is an observation photograph of a shoe sole with a podoscope. Figure 10 (b) is an observation photograph of the shoe sole with the podoscope. Figure 10 (c) is an observation photograph of the shoe sole with the podoscope.
    [0048] [048] Figure 11 (a) is an explanatory view illustrating the podoscope on the one hand. Figure 11 (b) is an explanatory view illustrating the podoscope from the front. Figure 11 (c) is an explanatory photograph of the podoscope taken in an oblique direction. Figure 11 (d) is an explanatory photograph of the podoscope obtained from above. Figure 11 (e) is an explanatory photograph of a state in which a person is on the podoscope. Figure 11 (f) is an explanatory photograph of a state in which a person is on the podoscope.
    [0049] [049] Figure 12 (a) is a plan view showing an example of a toe cap that is not included in the present invention. Figure 12 (b) is a sectional side view illustrating the toecap example that is not included in the present invention. Figure 12 (c) is a plan view showing an example of the toecap which is not included in the present invention.
    [0050] [050] Figure 13 (a) is a plan view showing another example of the toecap according to the present invention. Figure 13 (b) is a plan view showing another example of the toecap according to the present invention.
    [0051] [051] Figure 14 is a sectional side view illustrating a state of use of a conventional toe cap.
    [0052] [052] Figure 15 is a table showing test results when using the toecap according to the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
    [0053] [053] Modalities for carrying out the present invention will be described below. Figure 1 (a) is a perspective view showing a toecap of an embodiment according to the present invention. Figure 1 (a) illustrates a toecap 1, as an example, formed as a steel toecap which is made of steel.
    [0054] [054] The illustrated toecap 1 is formed for a right foot. A toe to a left foot is to be made in a shape being symmetrically bilaterally with the toe illustrated. The toe cap 1 is formed to be a cup-shaped (i.e., dome-shaped) wrap body having a front end wall 2, a left side wall 3, a right side wall 4 and an upper face wall 5 forming a smooth continuous curved surface. The thickness of the wrap body is approximately 1 to 2 mm and an accommodation space to accommodate toes is provided on the inside of the wrap body.
    [0055] [055] Here, in this specification, the words "front (toe)", "rear", "left", "right", "internal", "external", "top", "bottom", "bottom" "and more indicate the orientation, layout and location shown based on a person wearing shoes.
    [0056] [056] The toecap 1 according to the present invention is formed according to the JIS T8101 standard of Japanese Industrial Standards (JIS). The JIS standards define three categories of safety footwear with a toecap embedded in a toe region based on work segments. They are class H for heavy duty, class S for normal duty and class L for light duty. According to the standard, it is defined that a total toecap surface must be smoothly finished, edges and corners must be rounded and rust-proof treatment must be carried out on the total surface when made of steel. In addition, it is defined that; (a) The horizontal distance a between a central rear end part of an arch and a more forward end part should be in a range between 40 and 60 mm for class H and class S and between 30 and 50 mm for class L. (b) The height b on a rear most rear end must be 33 mm or greater for class H and class S and 28 mm or greater for class L. (c) A folding part the bottom side should be folded to be approximately horizontal and the width c of a horizontal bottom side should be 3 mm or greater. The dimension values a, b and c used in the definition above the JIS are those illustrated in figure 6 respectively.
    [0057] [057] Here, although the toecap according to the present invention is formed to meet JIS standards for class H as an example, it is also possible to form for class S and class L. The toecap according to the present invention can adopted for protective sports shoes of a type of sports shoes, general work shoes and a boot, etc., and can be used as a toe retainer for business shoes etc., in addition to a safety meeting JIS standards.
    [0058] [058] At the lower ends of the front end wall 2, the left side wall (ie, the inner side) 3 and the right side wall (ie, the outer side) 4, the fold part 6 having a predetermined width and folded inward. The bend part 6 is generally called the edge and it is provided to improve strength and reduce the sinking of the toecap 1 against a shoe bottom.
    [0059] [059] In addition to the structure indicated above, the toecap 1 according to the present invention has a characterized structure in which an extension side wall 7 is provided which is formed by extending a rear end edge 17 of at least one side wall for back next to a rear end edge 9 in a central position of the upper face wall 5. As a preferable example, the extension side wall 7 is provided on the right side wall 4 which is the side wall of a little finger side of the standing facing the outside.
    [0060] [060] A toe of the conventional common type illustrated in figure 4 has an opening formed by the rear edge edge 9 through which the toes enter, provided in an approximate central position between the eminence of a thumb and a front of the thumb. The opening is formed approximately perpendicular to the longitudinal direction of the shoe and on a plane that extends at a right angle or at an angle slightly inclined forward to an underside face of the shoe. In footwear having the conventional toe, as illustrated in figure 4, although the toe 100 may cover a region around the thumb, a little toe L located in a recessed position from the thumb is projected out of the toe. In this way, the conventional toe cap 100 cannot sufficiently protect the toes in a case where a narrow object such as a wheel on a weight-bearing cart strikes the little toe L discovered by the toe cap from one direction. side.
    [0061] [061] Figure 2 (a) is an explanatory view illustrating the relationship between toes and a toe 1 in the state where a shoe is worn. Even though the shape of a toe differs in each person, the little toe L is usually located in a recessed position from the thumb T. As described above, the toe 1 according to the present invention is provided with the extension side wall 7 on the side thereof. The side wall of extension 7 is an approximately rectangular projection piece capable of covering the little toe L sufficiently in both length and height from the side. The extension side wall 7 shown in figure 2 (a) is formed to be open above the little toe L almost completely and not to have the fold part 6 below the little toe L, which forms the border .
    [0062] [062] Similar to the conventional toecap, the toe entry opening of the toecap 1 formed by the rear end edge 9 except for the extension side wall 7 is located in an approximate central position between the eminence of a thumb and a front of the thumb and it is formed approximately perpendicular to the longitudinal direction of the shoe and on a plane that lies at a right angle or at an angle slightly inclined forward to an underside face of the shoe.
    [0063] [063] Here, as shown in figures 1 (b) and 2 (b), it is also possible to provide a small curved upper wall of approximately triangular shape (ie an upper extension wall) 8 above the little toe L to cover the upper part of the little toe L next to an upper end of the extension wall 7 and the upper face wall 5. Additionally, it is also possible to provide the fold part 6 below the little toe L, the which is the border extension. The shape and size of the small upper wall 8 and the extended fold part 6 are determined in consideration of the foot comfort involved in bending toes and the flexibility of the bottom of shoes and the part of the foot shoes required for walking and work.
    [0064] [064] Here, it is also possible to form the side wall of extension 7 in figure 1 by means of a separate element other than the toecap 1. For example, as illustrated in figure 5, it is possible to prepare a side wall 16 and fix it to a part (that is, an outer face 4a, a rear end 4b or an inner face 4c) of the right side wall 4 of the toecap 1. The fixing method includes fixing with adhesive, fixing by means of welding, fixing by fixing a fitting part and a part fitted respectively to the right side wall 4 and to the side wall 16 (for example, fitting between a concave part and a convex part), and fix by means of a screw such as when arranging a penetration hole respectively in the wall right side 4 and side wall 16.
    [0065] [065] Figure 3 is an explanatory view illustrating the relationship between a sectional view of the shoe tip in the vicinity of the side part to which the side wall of extension 7 is provided and a wheel S, whose diameter is 20 cm and the load supported is 300 kg. The footwear illustrated in the drawing consists of an upper part of the instep 10, the toecap 1, an inner lining of the toe 11, an insole (ie an insert) 12, an inner sole 13, an midsole 15, an outer sole 14 and more.
    [0066] [066] In general, a weight cart has 5 wheels on four corners below a platform. In this way, in most cases, a toe collides with the S wheel when a weight-bearing cart hits a foot. This is because a region close to an ankle was probably contacted by an edge of the platform before the wheel and is unlikely to be contacted by the wheel although the toe may enter under the platform. In particular, the outside of the toe is more likely to be contacted by the S wheel. That is, the little toe side of the toes has the highest chance of being contacted by the S wheel.
    [0067] [067] The relationship between wheel S and toe is illustrated in figure 3. It is understood that the side wall of extension 7 prevents direct contact between the little toe L and wheel S.
    [0068] [068] A wheel of a wheelbarrow loaded with a heavy load rarely passes over the little toe L beyond the side wall of extension 7. Normally, since the weight cart is operated by one person, the speed of the cart is low when a heavy load is being carried on the cart. Therefore, the weight cart does not gain strength in such a way that the wheel can pass over the toe while raising the weight cart. When the wheel reaches the shoe tip, the shoe tip is fitted between the wheel and a tread face like a wedge and for the weight-carrying cart like a wheel stop.
    [0069] [069] On the contrary, when the load mounted on the loader is light and the speed of the loader is high, there may be a case where the wheel passes over the toe. However, in this case, since the load on the little toe L above is relatively small, the possibility of being injured is small. Additionally, a side impact is blocked by the toecap 1 (that is, by the extension side wall 7). As previously described, injury to the toe can be prevented or reduced in either case exposed above.
    [0070] [070] Additionally, in a case where the aforementioned small upper wall (i.e., the upper extension wall) 8 is provided, the strength of the extension wall 7 itself is improved. It also protects the little toe by slightly covering the top side of the toe. In this way, the vicinity of the little toe can be protected against the wheel that passes over it.
    [0071] [071] Here, even when the upper part in the vicinity of the little toe is opened, the vicinity of the little toe is surrounded by an upper edge of the extension side wall 7 and the upper face wall 5 or by an edge of an extension side wall 26 and a top face wall 24 mentioned later. In this way, except for a case in which an object such as a pin head is nailed from above in the vicinity of the little toe, it is possible to prevent the load of a falling object of a certain size or a passage of a trolley. carrying weight on top is applied directly in the vicinity of the little toe because of the support by the upper edge of the lateral extension wall and the upper face wall. In addition, the section surrounded by the upper edge of the extension side wall and the upper face wall is a section surrounded by the upper part of the footwear, and since it is capable of supporting a certain amount of load, the upper instep contributes to the protection of the vicinity of the little toe.
    [0072] [072] Figure 15 shows the result of a test in which a weight-bearing cart collides on the side of the little toe (that is, laterally) against the footwear with the toecap 1 shown in figure 2 (b) embedded.
    [0073] [073] In this test, the height of the extension 7 side wall of the toecap 1 was established to be 20 mm and the speed of travel of the weight carrier was adjusted to three gears to be a normal walking level (ie, 1 , 4 m / s), a slow walking level (ie 1.0 m / s) and a very slow walking level (ie 0.6 m / s). Then, it was examined whether or not the S wheel of the load cart passes over the top of the shoe at each travel speed.
    [0074] [074] Additionally, the weight of the load carried by the cart was increased by 50 kg from 50 to 300 kg, and then it was examined whether or not the S wheel passes over the top of the shoe at each weight and at each speed.
    [0075] [075] In a table shown in figure 15, a description of "passing over" is given when the wheel S passes over the shoe beyond the side wall of extension 7, and description of "not passing over" is given when the wheel S was stopped without extending the side wall of extension 7 or was propelled back to the side opposite the direction of movement.
    [0076] [076] As a result of this test, it was concluded that wheel S does not pass or pass over extension wall 7 at any travel speed. In this way, it is determined that the toecap 1 according to the present invention can sufficiently protect the toes even when an impact is applied from the outside direction (in particular, from the little toe side) of the toe.
    [0077] [077] As previously described, the toecap having the side extension wall and the shoe having the toecap embedded in accordance with the present invention can sufficiently protect toes even when an impact is applied from the outside direction (in particular , on the side of the little toe), which are not sufficiently protected with a work shoe with a normal built-in toe.
    [0078] [078] Here, when toe protection is focused, it is sufficient to use a large toecap that covers the region of the toes and the upper part of the total instep. However, in a case like this work and walking are hampered because of the inability of the toe to bend. The present invention aims to provide the toecap (i.e., the toe-embedded shoe) having the extension side wall capable of substantially protecting the toes, including all toes, and providing features with operational effects similar to those of the side wall extension without disturbing work and walking. In this way, resources having substantially the same operation and the same effects as the resources according to the present invention are substantially within the technical scope of the present invention even if their shape is different from the shape described in the modalities indicated above.
    [0079] [079] Here, a side wall similar to the extension side wall 7 arranged on the inside (ie, the thumb side) to protect the inside (ie, the thumb side) depending on the intended use is within the scope of the present invention. Additionally, the material for the toecap is not limited to steel material. Synthetic resin such as polycarbonate can be used as the material for the toecap.
    [0080] [080] Figures 7 (a), 7 (b) and 7 (c) are explanatory views illustrating an appropriate example of the toecap of the present invention. Figure 7 (a) is a plan view of a toecap 20. Figure 7 (b) is a sectional view on line XX 'of the toecap 20 shown in figure 7 (a). Figure 7 (c) is a rear view. The respective drawings are explanatory views showing the toecap for a right foot. A toecap structure 20 for a right foot will be described below. Here, a toecap for a left foot is to be formed in a way such as when reversing toecap 20 in a symmetrical fashion bilaterally. There is no technical difference between them.
    [0081] [081] Similar to the toecap 1 as mentioned above, the toecap 20 shown in figure 7 has a front end wall 21, a left side wall 22, a right side wall 23, an upper face wall 24, a fold part bottom side 25, an extension side wall 26 and a rear end edge 27. The toe cap 20 has a dome-shaped wrap body (hereinafter called the main body part) that meets the requirements defined for the class H (for heavy duty) of JIS standards and the side wall of extension 26 is arranged on the main body part.
    [0082] [082] The total length L1 of the toecap 20 including the extension side wall 26 shown in figure 7 is in a range between 60 mm and 80 mm. A length a1 of the front end wall 21 to a center Q of the rear end edge 27 is between approximately 40 mm and 50 mm. A length a2 from the center Q of the rear end edge 27 to a distal end of the extension sidewall 26 is between approximately 20 mm and 30 mm in the side view.
    [0083] [083] Here, the center Q of the rear end edge 27 denotes the proximity of the midpoint in the lateral direction of the main body part or the proximity of a position on the rear end edge 27 where the distance from the front end wall 21 of the main body part to the rear end edge 27 is the largest.
    [0084] [084] The extension side wall 26 includes a curved part 28, curved inward as it gently lowered from an outline (indicated by the line of dashes and two points 31) with the main body part and a rear end face 29 approximately perpendicular to the underside. A section between the curved part 28 and a corner part 30 has the approximate predetermined height h1 from the bottom face. The corner part 30 is an outwardly curved outer edge. Here, the section having height hl can be formed as a continuous curved line from the curved part 28 to the corner part 30 or as a straight part parallel to the bottom face as long as it functions as the extension sidewall.
    [0085] [085] As an example, the height h1 of the extension side wall 26 is formed to be approximately half of the total height b1. Since the total height b1 for class H of JIS standards is 33 mm or greater, the height h1 of the extension side wall 26 of the present modality is to be 16.5 mm or greater and the toecap 20 of this modality is formed to have a height of about 20 mm. The height is determined in consideration of the structure of a shoe to be incorporated, such as the thickness of the sole of the shoe and the lining of the shoe, and is determined to exceed the height of the little toe of a foot to be accommodated.
    [0086] [086] Figure 7 (b) is a side sectional view and mainly illustrates shapes of the right side wall 23 and the extension side wall 26 continuously arranged on the right side wall 23. Line 31 indicated by a line of dashes and two points denotes an imaginary boundary line between the main body part being the dome-shaped wrap body and the extension side wall 26, which is seen superimposed in approximately the same position with an opening edge of the left side wall 22 located in the opposite side in the side view.
    [0087] [087] The rear view of the toecap 20 having the extension side wall 26 as illustrated in figure 7 (c) appears as having an extension part on the right side. The section that appears to be extended is the extension side wall 26. Since the extension side wall 26 is arranged to extend outward obliquely behind the main body part, the shape appears in the rear view as being extended to on the right. In addition, the section indicated by line 31 using a line of dashes and two points in figure 7 (c) denotes the rear end edge of the main body part. Its position is approximately close to the position of the rear end edge of the conventional toecap where the lateral extension wall is not arranged.
    [0088] [088] The shape of the rear end edge 27 of the upper face wall 24, such as a rear end edge Y of a toecap 50 shown in Figure 6, is created by means of an upper edge formed in a smooth arc along from the bilateral direction, an inner shoulder part 37 and an outer shoulder part 38 that are gently lowered continuously on both side walls respectively.
    [0089] [089] The position and shape of the rear edge edge 27 of the upper face wall 24 are important elements for a shoe to which the toecap is attached. For example, when the amount tilted back from the rear end edge 27 becomes large in a conventional toe cap, a stalk contacts the rear end edge 27 even when the toe portion is slightly bent. In this way, the position and shape of the rear end edge 27 disposed on the main body part of the toecap are important elements for a work shoe.
    [0090] [090] In the case of manufacturing work shoes suitable for the feet of Japanese people, toe caps to be embedded are adopted taking into account the dimensions determined by proportionally increasing and decreasing the dimensions defined by the JIS standards for respective shoe sizes corresponding to shoe sizes. foot. In this way, it is possible to form the main body part of the toecap which is attached to a foot of a Japanese person without strong contact between the instep and the rear edge edge 27 at the moment of folding the toe part. The strength of the toe cap required for the main body part and the degree of contact between the instep and the rear end edge 27 at the moment of folding are similar to those of the conventional toe illustrated in Figure 6.
    [0091] [091] Additionally, in a case where safety standards similar to the JIS standards mentioned above exist in countries other than Japan, toecaps and work shoes are formed to meet the safety standards of the respective countries.
    [0092] [092] Figure 14 is an explanatory view illustrating the relationship between a K shoe in which the conventional toe 50 is embedded and a foot F with a sectional view of the toe. Footwear K consists of an upper upper part 52, an inner lining of the toe 53, an insole (i.e. an insert) 54, an midsole 55 and an outer sole 56.
    [0093] [093] In the case of the conventional toe cap 50 that is properly constructed based on JIS standards, the shoe tip can be folded to a degree so that a sole is to be at a right angle to a walking surface . That is, the instep part is not to be in contact with the rear edge edge 57 even when the toe is widely bent.
    [0094] [094] The toecap 20 in accordance with the present modality is improved in protecting the face from the external side (in particular, the little toe side) without impairing toe-folding characteristics and foot comfort than the conventional toecap 50 as illustrated in figure 14 has.
    [0095] [095] Here, structural features of the toecap 20 will be described once again. The toe cap 20 has a structure illustrated in figure 7. The extension side wall 26 is arranged to project backwards on the right side wall 23 being on the little toe side (i.e., the outer side) of the main body part .
    [0096] [096] The rear end edge 27 of the upper face wall 24 is contoured to form a smooth arc along the bilateral direction. The inner side shoulder part 37 is formed between the left side wall (i.e., the inner side) 22 and the rear end edge 27 to connect and gently tilt them. The outer shoulder part 38 is formed between the right side wall (i.e., the outer side) 23 and the rear edge edge 27 to connect and tilt them smoothly. The shape of an upper edge part 39 comprising the rear end edge 27, the inner side shoulder part 37 and the outer side shoulder part 38 to be continuous is an important shape for the toecap 20 of the embodiment of the present invention. . The shape of the upper edge part 39 is similar to the same part of the conventional toecap which is properly constructed. In this way, the toe cap 20 does not contact the instep region even if the foot is bent forward forcibly, so that the toe folding movement is not hindered as in the case of the example illustrated in figure 14.
    [0097] [097] However, in order not to disturb the toe (ie, the shoe tip), the shape of the bottom of the toe 20 is important as well as the shape of the top edge 39. Figure 8 ( a) illustrates a sectional view of a shoe tip part of shoe K in which the toecap 20 is embedded. The footwear K comprises an upper part of the instep 32, an inner lining of the toe 33, an insole (i.e., an insert) 34, an insole 35 and an outer sole 36 as main components. Figure 8 (b) illustrates a state in which the toes of shoe K are folded.
    [0098] [098] Figures 9 (a) to 9 (c) are explanatory views illustrating respectively the toecap 20 illustrated in figure 8 (a) and only a toe of a foot F. Figure 9 (a) is a sectional view side. Figure 9 (b) illustrates the relationship between the rear end edge 27 of the upper toecap wall 20 and the toes of the foot F. The figure 9 (c) is an explanatory view illustrating the relationship between the underside of the toecap 20 and the toes of the foot F. Here, figure 9 (d) is a plan view, seen from above, illustrating the relationship between the conventional toe and toes F to be used for comparison with figure 9 (c).
    [0099] [099] As illustrated in figure 9 (a), the underside of the foot F can be roughly divided into the regions of the toe A, a tread B, an arch of the foot C and an heel D from on the front side. The toes roughly consist of the metatarsals J and the phalanges G being a front part of the metatarsals J. A joint connecting the metatarsal J and the phalanx is called the metatarsal joint with phalanx (MP). In this specification, an imaginary curved line directly connecting the respective MP joints from the digitus primus (ie, the thumb) to the fifth toe (ie, the little toe) is called the MP (MP) line.
    [0100] [100] Folding as when standing at your fingertips as shown in figure 8 (b) is generated mainly by having any joint in the MP line as the center, and then the stepping part B next to the folded part contacts a surface of walking and more.
    [0101] [101] Although the base structure of the shoe is variable, usually the insole 34, the midsole 35 and the outer sole 36 are arranged on the inside of the shoe towards the side of the contact face. When folding is performed so that the sole of the foot is vertical, as shown in figure 8 (b), the bottom of the shoe is naturally folded following the shape of the foot.
    [0102] [102] If the bottom of the shoe cannot be folded following the shape of the foot when the toe is bent, it will make it difficult to maintain the standing and operating position. Although a non-folding part is increased because the extension side wall 26 is provided, the toecap 20 according to the present embodiment has a folding performance similar to that of conventional footwear.
    [0103] [103] Figure 10 shows photo images of the bottom surface of shoes obtained using a podoscope that clearly illuminates parts by contacting a glass surface to be an observed surface.
    [0104] [104] Figures 11 (a) to 11 (d) are explanatory views, explanatory photographs and more from the podoscope. Podoscope 90 used for photographing has a cubic wrap and a thick transparent glass plate 91 is arranged as the observation face. A mask plate having a cutout that is slightly larger than an external shape of the bottom of the shoe is attached to the rear face of the glass plate 91, so that light can only pass through the cutout area of the mask plate. The cut-out area is arranged separately corresponding to each of the right and left shoes as being aligned in the longitudinal direction. Additionally, light is irradiated exactly into the glass plate 91 with light 92 from an end face of the glass plate 91.
    [0105] [105] A dividing wall 93 that separates right and left spaces is arranged in the center of the cube-shaped wrap, so that spaces are formed corresponding to the cutout areas for the right and left shoes. Additionally, the front side of the wrap is opened and an inclined mirror 94 is arranged in front of the rear side respectively in the right and left spaces that are separated by the partition wall 93.
    [0106] [106] As illustrated in figures 11 (e) and 11 (f), when a person wearing shoes stands on the podoscope 90, the underside faces of the shoes can be seen through the front opening through the mirror 94. Then, sections that are in close contact with the glass plate 91 are irradiated with light diffusing on the glass plate 91 to be clear with reflection. Figure 10 shows images obtained when photographing reflected light with a 95 camera.
    [0107] [107] Figure 10 (a) shows an image of a bottom face of a shoe in which the toecap 20 of the present modality is embedded as being photographed in a state in which a person wearing the shoes is standing on the observation face (that is, the state of figure 11 (e)).
    [0108] [108] Figure 10 (b) shows an image of the bottom face of the shoe in which the toecap 20 of the present modality is embedded, photographed in a state in which the person wearing the shoe raises the heel while placing the toe in contact. with the observation face with the knee it is thrown out (that is, the state of figure 11 (f)).
    [0109] [109] Figure 10 (c) shows an image of a bottom face of a shoe in which a conventional toecap without the extension side wall is embedded, photographed in a state in which the person wearing the shoe raises the heel while placing it in contact. the toe with the observation face with the knee is thrown out, similar to figure 10 (b).
    [0110] [110] Figure 10 (a) shows the bottom of the shoe in a state of standing on the podoscope without bending the shoe tip. As a result of the test, it was observed that approximately the same parts were in contact with the surface of the glass plate 91 regardless of the presence or absence of the side wall of extension 26. Here, only the photograph of the shoes using the toecap 20 with the side wall extension is shown in figure 10 (a) and the photograph relating to the toecap without the extension side wall has been omitted.
    [0111] [111] Both a curved line 96 in figure 10 (b) and a curved line 97 in figure 10 (c) are boundary lines connecting each boundary between a part in contact with the floor and a part not in contact. By comparing the two it can be determined that the positions of boundary lines 96, 97 are approximately the same. This shows that the bottom of the shoe is folded following the shape of the foot regardless of the presence or absence of the lateral extension wall. That is, the presence or absence of the extension side wall 26 does not affect foot folding and the footwear in which the toecap of the present modality is embedded has folding characteristics similar to those of the footwear in which the conventional toecap is embedded.
    [0112] [112] Figure 9 (c) is the explanatory view illustrating the relationship between the shape of the toecap 20 in the vicinity of the bottom of the shoe and the foot. Figure 9 (d) is the explanatory view illustrating the relationship between the shape of the conventional toe cap 50 in the vicinity of the shoe bottom and the foot. As previously described, folding of the toe part is performed with the step part B as the center along the MP line. As can be seen from the comparison of figure 9 (c) with figure 9 (d), even though the extension side wall 26 is extended backwards from a part corresponding to the rear end edge of the conventional toecap, it is confirmed that the toecap is in a position that does not influence to hinder the folding of the foot in the area along the MP line, with the B step as the center. This coincides with the observation result using the podoscope indicated above.
    [0113] [113] The mp line shown in figure 9 (c) is an imaginary line drawn by moving the MP line forward along the longitudinal direction of the shoe until it matches the front edge part of the step foot B. The part the front end of the mp line approximately matches the position of the rear end edge 27 (i.e., the top edge part 39) of the toecap 20 according to the present embodiment and to that of the conventional type in the plane view.
    [0114] [114] Since toe bending is performed with the step B part as the center, large bending does not occur on the mp line located on the front edge part of the step B part. Thus, there is no substantial difference in mode of folding the bottom of the shoe between the shoe in which the toecap 20 according to the present invention is embedded as illustrated in figure 9 (c) and the shoe in which the conventional toe 50 is embedded as shown in figure 9 (d), so that they do not substantially affect the movement of the toe fold.
    [0115] [115] Additionally, the top edge part 39 is the edge part comprising the rear end edge 27 of the toecap 20 and the inner shoulder part 37 and the outer shoulder part 38 which are continued to the rear end edge 27 where the instep region approaches when the foot is bent forward. However, since the upper edge 39 is located above a position in front of the MP line where the toe does not bend, the upper edge 39 is unlikely to contact the instep region even when the foot is folded on the MP line.
    [0116] [116] Figure 1 of Non-Patent Document 2 illustrates the drop in position on one knee at the time of a shoe folding test in "5.1 Specific ergonomic features". The folding position described in the aforementioned modality is the position defined by ISO standards in accordance with Non-Patent Document 2.
    [0117] [117] With the drop in position on one knee as defined in the standards, the shoes placed on the foot are largely bent forward. When such folding occurs, a swelling region called the eminence of a thumb contained in the step of step B is a major contact area as the floor and the respective joints are folded. That is, folding is carried out having the MP line mentioned above as the center, and folding is carried out to a degree where the sole is upright as shown in figure 8 (b).
    [0118] [118] Since the size and shape of a foot are different in each person, strictly speaking, the positions of the MP line connecting the positions of the MP joints and the mp line obtained by moving the MP line forward differ in each person who wears shoes. However, at this point, it is possible to define some typical positions at suitable stages for shoe sizes based on dimensional toe values standardized by JIS and others. The conventional toe according to the standards, as illustrated in figure 8, allows the toe to bend while protecting the toe appropriately. That is, the horizontal distance from the front end to the central part of the rear arc end part defined in the standards (ie 40 to 60 mm for class H and class S) is to have the edge position defined of the rear end of the toecap where toe protection and toe flexing work together. Then, the position can be determined with proportional conversion based on typical shoe sizes such as 24 cm, 25 cm, ..., and 30 cm corresponding to foot sizes.
    [0119] [119] The horizontal distance that is established based on the patterns indicated above is also a value that defines the position of the upper edge part 39 of the toecap 20 according to the embodiment of the present invention. From a function point of view to balance the toe protection and the folding of the foot, it is preferable that the horizontal distance to match the dimensional value coinciding with the front of the mp line.
    [0120] [120] As previously described, in order to allow for toe folding, the instep region is required not to strongly contact the upper edge portion 39 of the toecap 20. The conventional toecap has the rear edge edge formed to be approximately perpendicular to the longitudinal direction of the shoe. The toecap 20 according to the embodiment of the present invention also has the upper edge part 39 provided to be approximately perpendicular to the longitudinal direction of the shoe.
    [0121] [121] However, the mp line is a curved line, the two ends of which are directed towards the rear side. Considering the relationship with the instep alone, the upper edge part 39 can be formed as an outer edge in one degree so as not to exceed the mp line.
    [0122] [122] Figures 12 (a) to 12 (c) show examples of the shape of the toecaps having the side wall extending. Figure 12 (a) illustrates an example of the toecap having the upper edge part curved backwards. Figure 12 (b) is a sectional view showing the central position X1-X1 'of figure 12 (a) laterally.
    [0123] [123] The shape of the main body part of the toecap 60 shown in figure 12 (a) is similar to that of the conventional toecap. Here, a side wall 61 provided on the little toe side (i.e., the outer side) is formed larger to extend backwards and a side wall 62 on the thumb side (i.e., the inner side) is arranged in the position similar to the conventional toecap. Then, a rear end edge 64 of an upper face wall 63 is formed as directly connecting an upper side wall 61 and an upper side wall 62. Additionally, in this example, the rear end edge 64 connecting the right and left is modeled to far exceed the aforementioned mp line.
    [0124] [124] With the toecap 60 illustrated in this example, since the rear end edge 64 widely exceeds the mp line, the instep region contacts the rear end edge 64 when the toe is bent widely. In this way, additional folding movement is to be hindered.
    [0125] [125] The shape of the main body part of a toecap 70 shown in figure 12 (c) is similar to that of the conventional toecap. Here, a sidewall 71 provided on the little toe side (i.e., the outer side) is formed larger to extend backwards and a sidewall 72 on the thumb side (i.e., the inner side) is arranged in the position similar to the conventional toecap.
    [0126] [126] Then, the rear end edge 74 extending from the rear end center of an upper face wall 73 to the thumb side (i.e., the inner side) is realized in a position and shape similar to that of the conventional toe cap. A section extending from the center to the sidewall 71 being the little toe side (i.e., the outer side) is embodied in a shape having an end edge 75 extending from the sidewall 71 being the little finger side from the foot (i.e., the outer side) to the center and an end edge 76 extending from the center of the upper face wall 73 diagonally to the rear. According to the toecap 70 illustrated in this example, since the rear edge edge extending from the center to the outer side consisting of the edge edge 75 and the edge edge 76 largely exceeds the mp line, the instep region contacts the edges of ends 75, 7 6 when the toe is bent widely. In this way, additional folding movement is hindered.
    [0127] [127] The shape of the main body part of the toecap 40 shown in figure 13 (a) is similar to that of the conventional toecap. Here, the side wall 41 on the little toe side (i.e., the outer side) is formed larger to extend backwards and the side wall 42 on the thumb side (i.e., the inner side) is arranged in the position similar to the conventional toecap.
    [0128] [128] Then, the rear end edge 44 extending from the rear end center 45 of the upper face wall 43 to the thumb side (i.e., the inner side) is realized in a position and shape similar to that of the conventional toe cap. The section extending from the rear end center 45 to the side wall 41 with the little toe side (i.e., the outer side) being embodied as the curved edge 46 forming an arc extending from the rear end center 45 to the inside of the rear end of the side extension wall disposed on the side wall 41 on the little toe side (i.e., the outside side). In addition, an upper extension wall 47 having the curved edge 46 as an end edge is formed at the outer rear part of the upper face wall 43.
    [0129] [129] The curved edge 46 is formed in a position not to exceed the mp line. In such a case, even when the foot is bent widely, it is unlikely that the instep region will be in contact with the curved edge 46 and the bending movement is not hindered. Here, even when the shape is similar to the curved edge 46, if the rear end edge is modeled to connect the central part 45 and the rear end of the side wall 41 linearly in a flat view, the rear end edge exceeds the mp line , so that the folding movement of the foot is hindered.
    [0130] [130] Additionally, on the toecap 40, the upper extension wall 47 that connects the upper face wall 43 and the lateral extension wall is arranged continuously so as not to exceed the mp line in the backward position for the part corresponding to the part top edge 39 of the toecap 20 mentioned above. Since the upper extension wall 47 covers the upper side of the little toe while reinforcing the lateral extension wall, load protection from the upper side is improved when compared to the toe mentioned above.
    [0131] [131] The shape of the main body part of a toecap 80 shown in figure 13 (b) is similar to that of the conventional toecap. Here, a side wall 81 on the little toe side (i.e., the outer side) is formed larger to extend backwards and a side wall 82 on the thumb side (i.e., the inner side) is arranged in the position similar to the conventional toecap.
    [0132] [132] Additionally, a rear end edge 84 extending from a rear end center 85 of an upper face wall 83 to the thumb side (i.e., the inner side) is realized in a position and shape similar to that of the toecap conventional. In addition, an oblique end edge 87 is formed, which connects a part 86 located closer to the toe side (i.e., the outer side) than the rear end center 85 with the vicinity of the rear edge edge of the extension side wall disposed on the side wall 81 on the little toe side.
    [0133] [133] End edge 87 is provided in position not to exceed the mp line. In the case of this form, even if the toe is bent widely, it is unlikely that the instep region will be in contact with the edge edge 87 and the bending movement is not hindered.
    [0134] [134] Additionally, the toecap 80 is provided with an upper extension wall 88 continuously connecting the upper face wall 83 and the lateral extension wall in order not to exceed the mp line in a more rear position than the corresponding position to the upper edge part 39 of the toecap 20 mentioned above. The extension top wall 88 acts to reinforce the extension side wall. At the same time, since it covers the upper side of the little toe, load protection from the upper side is improved when compared to the toecap mentioned above.
    [0135] [135] Finally, a description is made of the fold part (that is, the border) at the lower end. In a case where the toecap 1 is provided only with the side wall of extension 7, as shown in figure 1, there is a possibility that the side wall of extension 7 is folded inwards (that is, to the opening side the toecap 1) when a very large impact force is applied laterally (ie, through the little toe side) to the extension side wall 7. In this case, it is possible to improve resistance of the extension side wall 7 in the lateral direction to the form the fold part (i.e., the edge) 6 at the lower end of the extension sidewall 7. With this structure, it is unlikely that the extension sidewall 7 will be folded inward (ie, towards the opening side of the toe cap 1) and toe protection against side impact force can be improved.
    [0136] [136] Additionally, in a case where only the side wall of extension 7 is arranged without arranging the fold part 6 for the toecap 1, there is a possibility that the side wall of extension 7 goes down towards the bottom of the shoe when a large impact caused by a falling object and others is applied to the extension side wall 7 from the upper side. When the descent becomes deep, there is a possibility that the load of a falling object will act on the upper surface of the little toe once the upper edge of the extension 7 sidewall becomes lower than the toe. minimum foot. When the fold part (i.e., the edge) 6 is formed at the lower end of the extension sidewall 7 in a similar manner, as previously described, it is unlikely that the extension sidewall 7 will descend towards the bottom of the shoe by because of the increased contact area between the fold part 6 and the shoe bottom. As a result, toe protection is performed even when a large impact is applied from the upper side. INDUSTRIAL APPLICABILITY
    [0137] [137] The present invention can be used in work shoes such as safety shoes. Additionally, it is also possible to be used in protective sports shoes, sports shoes, general work shoes and a boot, etc. and be used as a toe retainer in business shoes, etc. DESCRIPTION OF REFERENCE NUMBERS 1 toecap 2 Front end wall 3 Left side wall (internal side) 4 Right side wall (external side) 4th outer face 4b Rear end 4c Inner face 5 Top face wall 6 Bending part 7 Extension side wall 8 Small upper wall (upper extension wall) 9 Rear end edge 10 Upper chest standing 11 Spout inner liner 12 Insole (insert) 13 Inner sole 14 Outsole 15 midsole 16 Sidewall 17 Rear end edge 20 Toecap 21 Front end wall 22 Left side wall 23 Right side wall 24 Top face wall 25 Underside bend part 26 Extension side wall 27 Rear end edge 28 Curved part 29 Rear end face 30 Corner part 31 Limit next to the main body part (dash line and colon) 32 Top of foot 33 Spout inner liner 34 Insole (insert) 35 Midsole 36 Outsole 37 Inner side shoulder part 38 Outside shoulder part 39 Top edge part 40 toecap 41 Sidewall on the little toe side (outside side) 42 Sidewall on the thumb side (inner side) 43 Top face wall 44 Rear end edge 45 Rear end center 46 Curved edge 47 Upper extension wall 50 toe cap 52 Upper part of foot 53 Spout inner liner 54 Insole (insert) 55 midsole 56 Outsole 57 Rear end edge 60 toecap 61 Sidewall on the little toe side (outer side) 62 Sidewall on the thumb side (inside side) 63 Top face wall 64 Rear end edge 70 toecap 71 Sidewall on the little toe side (external side) 72 Sidewall on the thumb side (inner side) 73 Top face wall 74 Rear end edge 75 End edge 76 End edge 80 toecap 81 Sidewall on the little toe side (outer side) 82 Sidewall on the thumb side (inside side) 83 Top face wall 84 Rear end edge 85 Rear end center 86 Part closer to the little toe side (outer side) 87 End edge 88 Upper extension wall 90 Podoscope 91 Glass plate 92 Light 93 Partition wall 94 Mirror 95 Camera 96 Curved Line 97 Curved Line 100 toe cap MP Line MP mp mp Line hl Height Horizontal Distance Toe B Part of stepping C sole of the arch D Heel F Foot G phalanx J Metatarso K Footwear L Little toe S Wheel T Thumb Y Rear end edge
    权利要求:
    Claims (4)
    [0001]
    Toe cap (1, 20) for a shoe (K) having a longitudinal direction, the toe cap (1, 20) covering a toe when embedded in a shoe tip to protect a toe from loads and impacts of heavy items, comprising: a toecap body (1, 20) formed as a cup-shaped wrap body having a moderately continuous curved surface formed by a front end wall (2, 21), a left side wall (3, 22), a wall right side (4, 23) and an upper face wall (5, 24), one of the left side wall (3, 22) and right side wall (4, 23) forming a side wall on one side of the little toe (L); wherein the side wall on the little toe side (L) is provided with an extension side wall (7, 26) extending backwards beyond a rear end edge (9, 27) of the upper face wall ( 5, 24) to protect the little toe (L); in which the toecap is in a position, when embedded in a shoe tip, which does not hinder the bending of a foot (F); wherein the rear end edge (9, 27) of the upper face wall (5, 24) is arranged approximately perpendicular to the longitudinal direction; characterized by the fact that the extension side wall (7, 26) is an approximately rectangular projection piece capable of covering the little toe (L) sufficiently in both length and height from the side.
    [0002]
    Toe cap (1, 20) according to claim 1, characterized in that a small upper wall curved in an approximately triangular shape (8) is provided above the little toe (L) to cover the upper part of the little toe the foot (L) next to an upper end of the extension wall (7, 26) and the upper face wall (5, 24).
    [0003]
    Toe cap (1, 20), according to claim 2, characterized by the fact that: a lower face of the foot (F) can be divided into the regions of a toe (A), a part of stepping (B), an arch of the foot (C) and an heel (D); a first line (MP) having a stepping part (B) as the center is defined as an imaginary curved line directly connecting metatarsal joints with the foot phalanx (F) from the thumb (T) to the little toe ( L); and a curved edge (46) of the small upper wall (8) is formed in a position not to exceed a second line (mp) that is obtained by moving the first line (MP) forward along the longitudinal direction of the shoe (K ) until it matches the front edge part of the stepping part (B).
    [0004]
    Toe cap (1, 20) according to claim 3, characterized in that the front end of the second row (mp) approximately matches the position of the rear end edge of the toe cap (1, 20) in a flat view .
    类似技术:
    公开号 | 公开日 | 专利标题
    BR112013011200B1|2020-07-21|toecap for footwear
    CN104473371B|2017-07-28|Stabilization and comfort system for article of footwear
    ES2267336B1|2008-02-16|METATARSIAN PROTECTION FOR SAFETY SHOES.
    EP2848142B1|2017-09-13|Shoe soles having inclined grooves
    ES2559624T3|2016-02-15|Shoe, especially sports shoe
    USRE40757E1|2009-06-23|Metatarsal protector
    JP2012532732A|2012-12-20|Toe cap for footwear and outsole with integrated toe cap
    US6539647B2|2003-04-01|Safety shoe
    US20160295952A1|2016-10-13|Shoe of bilaterally same shape
    KR102010036B1|2019-08-12|Toe cap
    US20060117608A1|2006-06-08|Shoe with shell portions
    KR101963399B1|2019-03-28|Midsole and shoes with the same
    KR100549049B1|2006-02-07|Safety footwear form slippers
    JP5438932B2|2014-03-12|Shoe toe
    JP2014012101A|2014-01-23|Toe core for safety shoe
    JP2005131065A|2005-05-26|Footwear
    US20200008531A1|2020-01-09|Curved Toe Cap Safety Boot
    KR101973769B1|2019-09-02|Toe cap
    KR101204292B1|2012-11-26|Shoes for walking on a slope
    JP2020080975A|2020-06-04|Sole and shoe
    JP5909752B2|2016-04-27|Shoe upper protector
    JP3122770U|2006-06-29|Sandals and slippers
    TH64805B|2004-10-21|Toe and toe shoes
    JP5697384B2|2015-04-08|shoes
    JPH0582302U|1993-11-09|Toecap for reinforcing safety shoes
    同族专利:
    公开号 | 公开日
    CN103188958A|2013-07-03|
    CA2816411C|2015-12-08|
    KR20130057493A|2013-05-31|
    EP2622978A4|2013-10-02|
    TW201218970A|2012-05-16|
    AU2011324670A1|2013-05-23|
    SA3459B1|2014-06-25|
    RU2565576C2|2015-10-20|
    CA2816411A1|2012-05-10|
    BR112013011200A2|2016-08-23|
    JPWO2012060134A1|2014-05-12|
    MX2013004942A|2013-08-15|
    US20130255111A1|2013-10-03|
    PE20140440A1|2014-04-10|
    CN103188958B|2016-07-13|
    RU2013110230A|2014-12-10|
    US8898933B2|2014-12-02|
    JP2013013827A|2013-01-24|
    EP2622978B1|2016-03-23|
    JP5154699B2|2013-02-27|
    CL2013001197A1|2013-10-11|
    EP2622978A1|2013-08-07|
    JP2012179430A|2012-09-20|
    WO2012060134A1|2012-05-10|
    KR101292383B1|2013-08-01|
    ZA201303197B|2014-07-30|
    AU2011324670B2|2015-05-21|
    MY156745A|2016-03-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US176556A|1876-04-25|Improvement in processes of forming heel-stiffeners and other articles in the manu |
    US1118755A|1914-06-18|1914-11-24|Logan T Fiscus|Foot-gear.|
    US1744122A|1928-10-18|1930-01-21|John G Keeling|Toe-dancer's shield|
    US1965431A|1932-03-30|1934-07-03|William J Prewitt|Lining element for shoes|
    FR858165A|1938-07-23|1940-11-19|Device for shoes, preventing stockings from tearing|
    US2268435A|1941-06-30|1941-12-30|Zucker Victor|Shoe and foot saver|
    US2443725A|1946-02-19|1948-06-22|Cobb John Lynch|Shoe toe box|
    US2601162A|1947-04-25|1952-06-17|Edward F Mclaughlin|Safety shoe|
    US2563751A|1947-07-21|1951-08-07|A R Hyde & Sons Company|Athletic shoe|
    US2457664A|1948-11-04|1948-12-28|Raymond B Harrison|Safety shoe|
    GB657858A|1948-11-04|1951-09-26|Raymond Bernard Harrison|Improvements in safety shoes|
    US2575867A|1949-08-04|1951-11-20|Ferri Saul|Toe spacing device|
    DE1684494U|1954-06-24|1954-10-07|Romika K G Lemm & Co|ACCIDENT PREVENTION SHOES MADE OF RUBBER, PLASTIC OD. DGL.|
    DE1154016B|1959-10-30|1963-09-05|Schabsky Atlas Schuhfab|Safety shoe|
    JPS62486Y2|1983-05-06|1987-01-08|
    JP2821515B2|1994-09-13|1998-11-05|ミドリ安全株式会社|Safety shoe tip core and method of manufacturing the same|
    JP3776158B2|1996-03-04|2006-05-17|ミドリ安全株式会社|Safety shoe tip and method for manufacturing the same|
    EP1029463A1|1999-02-19|2000-08-23|Uk Safety Group Limited|Asymmetric cap|
    US6412195B1|2001-06-14|2002-07-02|Aundra Mack|Protective footwear for use with running shoes, sneakers|
    FR2834183B1|2002-01-03|2004-07-30|Severine Zaoui|FOREWORD PROTECTION DISPSOITIVE, ESPECIALLY SUITABLE FOR WEARING CLASSIC DANCE SHOES|
    JP2003310307A|2002-04-26|2003-11-05|Okamoto Ind Inc|Toe box for work shoe and work shoe with the same|
    US6836980B2|2002-05-17|2005-01-04|Tooley Verla Woods|Toe guard assembly and method|
    JP2004041406A|2002-07-11|2004-02-12|Ykk Corp|Resin toe core of safety shoe|
    CN2750698Y|2004-09-30|2006-01-11|张炜焯|Rigidity toe cap|
    EP2286686A1|2009-08-21|2011-02-23|Mascot International A/S|Toe protection cap and footgear comprising toe protection cap|
    JP5477848B2|2009-11-13|2014-04-23|株式会社エスエスケイ|Toe structure of sports shoes|
    USD654260S1|2010-04-19|2012-02-21|Sport Maska Inc.|Toe cap|JP5093626B2|2011-04-25|2012-12-12|克之 納所|Toe for safety shoes and safety shoes|
    US10045592B2|2013-08-07|2018-08-14|Protectozz, Llc|Toe protector for athletic footwear having removable cleats|
    US20150040439A1|2013-08-07|2015-02-12|Protectozz, Llc|Toe protector for athletic footwear having removable cleats|
    US20170095032A1|2015-10-06|2017-04-06|L.P. Royer Inc.|Safety footwear|
    USD787788S1|2015-12-08|2017-05-30|Rocky Brands, Inc.|Footwear toe cap|
    USD854175S1|2016-07-15|2019-07-16|Millennium Plastics Limited|Toe cap|
    CN106235502A|2016-08-30|2016-12-21|赛纳（苏州）安防用品有限公司|A kind of high temperature protection safety shoe|
    JP2018033705A|2016-08-31|2018-03-08|ミドリ安全株式会社|Toe box|
    IT201600109572A1|2016-10-31|2018-05-01|Diadora Sport S R L|TIP FOR SAFETY FOOTWEAR|
    IT201600109573A1|2016-10-31|2018-05-01|Diadora Sport S R L|PROTECTION DEVICE FOR SAFETY SHOES|
    KR101724626B1|2017-01-16|2017-04-07|신재웅|Stabilization of pressure distribution structure Stiffener for toe cap|
    CN107252843A|2017-06-16|2017-10-17|浙江铭瑞鞋材有限公司|A kind of processing technology of steel toes|
    CN107252158B|2017-08-04|2019-09-03|三六一度童装有限公司|A kind of guard for preventing toe-cap from kicking damage and prevent toe-cap from kicking the shoes of damage|
    US10786044B2|2017-08-16|2020-09-29|Wolverine Outdoors, Inc.|Footwear with protective toe guard and related method|
    US11234481B2|2017-12-22|2022-02-01|Bauer Hockey Llc|Skate|
    US11266205B2|2018-03-15|2022-03-08|Shoe-Vital LLC|Wearable shoe shaper|
    USD871051S1|2018-03-15|2019-12-31|Shoe-Vital LLC|Pair of shoe shapers|
    US20200008531A1|2018-07-03|2020-01-09|Evan Parker|Curved Toe Cap Safety Boot|
    KR101973769B1|2018-11-21|2019-09-02|신재웅|Toe cap|
    KR102010036B1|2018-12-19|2019-08-12|신재웅|Toe cap|
    KR102121765B1|2019-02-27|2020-06-11|이호영|The boots for forestry|
    KR102177067B1|2019-07-18|2020-11-10|최철민|Toe-cap extending sideways|
    KR20200076572A|2019-08-02|2020-06-29|신재웅|Toe cap|
    USD924545S1|2019-09-04|2021-07-13|Shanshan Lu|Shoe shield|
    GB2590724A|2019-12-31|2021-07-07|Singh Notay Navtej|Toe protector|
    USD883649S1|2020-01-19|2020-05-12|Xiaoming Huang|Crease protector|
    USD919942S1|2020-08-08|2021-05-25|Xianwen Hu|Pair of shoe protectors|
    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-09-03| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-07-07| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-07-21| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 06/07/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    JP2010248883|2010-11-05|
    JP2010-248883|2010-11-05|
    PCT/JP2011/065479|WO2012060134A1|2010-11-05|2011-07-06|Toe box and shoe with incorporated toe box|
    [返回顶部]