• 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:

    公开号:SE0950342A1
    申请号:SE0950342
    申请日:2009-05-14
    公开日:2010-11-15
    发明作者:Haakan Sterner
    申请人:Sterners Specialfabrik Aktiebolag；
    IPC主号:
    专利说明:

    15 20 25 30 35 There is also a need for a roller ski with a good fl flexibility / elasticity / sperm in the ski that absorbs forces from the skier when he trains and exercises the ski movements.
    This elasticity or span would be variable and adjustable to provide optimal elasticity for each skier regardless of the weight of the skier. Skiing on different materials on the ground is also a reason to adjust the elasticity of the roller ski just before skiing on the snow-free ground.
    In addition, there is a need to design a roller ski that is simple and economical to produce.
    BRIEF DESCRIPTION OF THE INVENTION It is an object of the present invention to eliminate or at least minimize at least one of the disadvantages and disadvantages of the above-mentioned roller ski.
    This can be obtained by a roller ski, comprising a base frame with a front wheel and a rear wheel, said wheels being attached to said base frame by wheel support and where a tensile support device is attached to the base frame and arranged to assist in increasing the bending resistance of said base frame.
    Thanks to the tensile support device arranged to assist in increasing the bending resistance of said base frame, the weight of the base frame can be kept lower than the weight of known roller skis as the principle of the invention allows less material to be used in maintaining the base frame bending resistance. The roller ski in accordance with the invention has a very simple design and is relatively easy to manufacture together with the fact that it offers relatively low production costs.
    According to one aspect of the invention, the tensile stress support device is provided with an adjustment mechanism, arranged to enable said bending resistance to be adjustable.
    Thanks to the possibility of adjusting the bending resistance of said base frame, the roller ski obtains an optimal sparm independent of both the skier's weight and the nature of the ground.
    Adjusting the roller ski span is an important aspect when skiing with roller skis on different materials or on uneven ground. If the ground is soft, the need for elasticity of the ski is different from the need for elasticity when riding on uneven ground. According to another aspect of the invention, a tensioning screw is integrated with said tensile stress support device. The tensile support device further comprises a locking bolt which makes it easy for the skier or other persons to manually adjust the bending resistance of the adjacent roller skis - the span of the ski - by using a simple tool in a fast manner. The adjustment can even be done by hand, without any need for tools at all.
    According to a further aspect of the invention, said tensile stress support device comprises at least one wire-like device arranged to withstand considerably much higher tensile force than compression force, and a tension screw and said tension screw being integrated with said wire-like device. Said wire-like device with the integrated tension screw is of low weight, easy to produce and of low cost.
    According to another aspect of the invention, the base frame of the roller ski has a rectangular profile with one or more welds, preferably on its underside. The underside of the base frame has perforations designed to offer good torsional rigidity at the same time as they lead to low weight of the base frame when less material is needed.
    According to a further aspect of the invention, the base frame is made of steel, preferably of carbon steel or stainless steel.
    According to yet another aspect of the invention, said wheel supports are separate parts, and said base frame is attached to adjacent wheel supports, at least in part by said tensile stress support device. Said wheel support is provided with at least one projecting part arranged to fit with a corresponding recess in an end wall of said base frame to offer fixation, at least laterally. Said wheel support also contains a projecting tongue which offers support in the vertical direction of the base frame of the support. Thanks to this, the roller ski's construction is stable and simple because it includes few components and this in turn makes the roller ski easy to manufacture at a low production cost.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail with reference to the accompanying drawings, in which: Fig. 1 shows a three-dimensional top view of a roller ski in accordance with the present invention, 10 15 20 25 30 35 Figs. Fig. 2 shows a side view of said roller ski, Fig. 3 shows a top view of said roller ski, Fig. 4 shows a view of the underside of the roller ski, Fig. 4a shows a detail view from below of the front wheel and front wheel support, Fig. 4b shows a detailed view from below of the rear wheel and the rear wheel support, Fig. 4c shows a detailed view from below of the front wheel and the front part of the base frame, Fig. 4d shows a detailed view from below of the rear wheel and the rear part of the base frame, Fig. 5 shows a cross-sectional view of said roller ski. Fig. 6 shows a three-dimensional view of an enlarged detail on the underside of said roller ski, F ig. Fig. 7 shows an enlarged detail from a front cross-sectional view of said roller ski where the rear part of the roller ski is shown, Fig. 8 shows an enlarged detail from a cross-sectional view seen from the side (shown in Fig. 5) of said roller ski where the rear part of the roller ski is shown Fig. 9 shows an enlarged exploded view in perspective of the underside of the front part of the roller ski.
    DETAILED DESCRIPTION OF FIGURES Fig. 1 shows a roller ski 1 in its entirety. Generally, the roller ski 1 comprises a base frame 2 with a front wheel 3 and a rear wheel 4, said wheels 3, 4 being attached to the base frame 2 by wheel supports 6, 7.
    The base frame 2 can be made of steel, preferably carbon steel or stainless steel.
    The upper side 21 of the base frame 2 is substantially flat and suitable for attaching bindings to which hold the skier's foot.
    Fig. 2 is a side view of the roller ski 1. The long side 22 of the base frame 2 has the same height H along the entire long side 22 and the distance from the ground to the lower edge of the long side 22 is substantially constant along the long side 22.
    The wheels 3, 4 are attached to said base frame 2, at its ends, through the wheel supports 6, 7.
    Wheels 3, 4 can have the same diameter. The base frame 2 is mainly parallel to the ground, but this may change, which is clarified below. In Fig. 3, which is a top view of the roller ski 1, it is shown that the rear part of the base frame 2 is wider than the front part of the base frame 2. The base frame 2 converges from its rear end to its front end. The width of the front wheel 3 is substantially the same as the width of the rear wheel 4 and as a result the width of the front wheel support 6 is substantially the same as the width of the rear wheel support 7. Preferably the same type of wheels and wheel supports are used to offer economies of scale.
    Fig. 4, which is a bottom view of the adjacent roller ski 1, shows a tensile support device 5 attached to the base frame 2. The tensile support device 5 is arranged to assist in increasing the bending resistance of the base frame 2 and is positioned inside the base frame in the preferred embodiment. 2, below the upper side 21 and at a distance D (shown in Figures 5 and 7) from the upper side 21. In Fig. 4, the tensile support device 5 is attached indirectly to the base frame 2 via said wheel supports 6, 7, but in some embodiments the tensile stress support device 5 is attached directly to the base frame 2 in order to assist in increasing the bending resistance of the base frame 2.
    Said increase of the bending resistance of the base frame 2 is achieved regardless of whether the tensile stress support device 5 is attached directly or indirectly to said base frame 2.
    Said tensile support device 5 is an object which extends between two points and which runs substantially parallel to both the ground and the upper side 21 of the base frame 2 (shown in Fig. 1). Due to the possibility of increasing the bending resistance of the base frame 2, the increase of said bending resistance will be able to cause the base frame 2 to be slightly curved in an upward direction. The more the base frame 2 bends upwards, the more the bending resistance increases while the tensile support device 5 is still substantially parallel to the ground.
    Said tensile support device 5 extends at least 50% of the length L of the base frame 2 (shown in Fig. 3), preferably at least 75% of the length L of the base frame 2 and more preferably at least 90% of the length L of the base frame 2.
    The tensile stress support device 5 is provided with an adjustment mechanism 51-54 (shown in Figs. 7, 8, 9), arranged to enable said bending resistance to be adjustable. Furthermore, in a preferred embodiment, said tensile support device 5 comprises at least one wire-like device 50, arranged to withstand considerably higher tensile force than compression force, which entails many advantages, e.g. a large selection of useful materials, possibilities to obtain considerable weight reduction (compared to conventional roller skis) etc.
    In the preferred embodiment, said tensile support device 5 also comprises a mechanism for adjusting, for example adjusting the curvature of the base frame 2, and / or the nominal tensile force in the wire-like device 50. It comprises a tension screw 53, 54 integrated with said wire-like device 50, at each end thereof, adapted to interact with tension bolts 51, 52, as shown in Figs. 8, 9. In a preferred embodiment, said wire-like device is preferably constituted by a string / rod 50, arranged not to be twisted due to frictional forces. from said tensioning bolt 51, 52 (shown in Figs. 6, 8, 9), wherein said tensioning screw 53, 54 consists of threads on the rod 50.
    Said string or rod 50 (hereinafter referred to as rod) is preferably made of a material such as steel, for example stainless steel or carbon steel. In one embodiment, the rod 50 may have a diameter in the order of 3-10 mm and a length in the order of 200-600 mm.
    It will be appreciated that other shapes which offer the same function may also be used, for example flat strings.
    Fig. 5 is a cross-sectional view of the roller ski 1 where the rod 50 is shown.
    The base frame 2 is made of a metal plate, preferably a steel plate with a thickness of about 0.2-5 mm, preferably 0.2-3 mm and more preferably 0.5-2 mm, which is bent into a hollow, closed, rectangular cross-sectional profile with open ends. The longitudinal sides of the metal plate (corresponding to the underside 24 of the base frame 2 after bending, see Fig. 4) have been punched into a distinct pattern before bending (best shown in Figs. 4 and 6). After bending, the edges of the longitudinal sides have been joined by one or more welds 25 on one of its sides, preferably the underside 24 of the base 2 (shown in Figs. 4, 6), but in other embodiments the welds can be placed on sides other than the underside.
    In the preferred embodiment, the underside 24 has perforations 26 as a result of the punching, and which after welding form one or more crosses 27. These crosses 27 provide the base frame 2 with a good torsional rigidity, while the perforations 26 provide low weight. of the base frame because less material is required compared to a base frame with an unperforated solid underside. The use of a flat starting material also results in low material costs. The lightness of the roller skis is an advantageous factor because a lower weight of the roller skis reduces the necessary efforts of the skier, mainly during the actual sports activity but also when transporting the roller skis.
    In addition, the base frame 2 would be less inclined to bend if the underside 24 was not provided with said perforations 26, and the openings thus obtained offer easy access to make adjustments.
    As is known, the height H of the long sides 22, 23 (shown in Fig. 2) has a large influence on the bending resistance but also on the torsional rigidity. The height H should in many realistic embodiments preferably be in the order of 10-50 mm, more preferably 15-35 mm and most preferably 20-40 mm.
    The wheel supports 6, 7 are arranged with at least one U-shaped projecting part 62, 72, which is shown in Figs. 4a-b, arranged to fit a corresponding U-shaped recess 24A, 24B (shown in Figs. 4c-d) in the end wall of the base 2 to provide fixation, at least laterally.
    The wheel supports 6, 7 are further arranged with arms 60, 61, 70, 71 (shown in Figs. 4a-b), each arm having at least one wheel fixing recess 60A, 61A, 70A, 71A (shown in Figs. 4a-b).
    In Fig. 4c it is shown that the length of the side 242A on the front tread 24A on the underside 24 of the base 2 corresponds to the length of the side 68 (shown in Fig. 4a) on the projecting part 62 of the front wheel support 6 while the length of the sides 241A, 243A on the front depression 24A corresponds to the length of the sides 65, 66 of the projecting part 62. Thanks to these corresponding lengths, the projecting part 62 supports the front end wall of the base frame 2 through this fitting.
    In the preferred embodiment shown in Figs. 4, 4b, 4d, the length of the side 242B of the rear recess 24B of the underside 24 of the base frame 2 is longer than the length of the corresponding side 78 of the rear projecting portion 72 of the rear wheel support 7. Due to this difference in length, cavities exist between the sides 241B, 243B of the rear recess 24B and the sides 75, 76 of the rear protruding portion 72 of the rear wheel support 7. In some embodiments, the length of the side 242B of the underside 24 may rear recess 24B of the base frame 2 corresponds to the length of side 78 of the rear projecting part 72 of the rear wheel support 72 and the projecting part 72 supports the rear end wall of the adjacent base frame 2.
    The wheel supports 6, 7 are separate parts, and said base frame 2 is axed to said wheel support 6, 7, at least in part by said tensile support device 5. Said base frame 2 may be further fi xerated to said wheel supports 6, 7 by welding with the base frame 2, e.g. by welding the front and rear recesses 24A, 24B and the corresponding protruding portions 62, 72.
    In addition, the wheel supports 6, 7 have a projecting device, preferably in the form of a tongue 69, 79, which provides support in the vertical direction of the base frame 2 on the supports 6, 7. This tongue 69, 79 is shown more clearly in Figs. 8, 9. In this embodiment, the tongue 69, 79 has a strong shape at its end, but it can of course have other shapes and still maintain its supporting function.
    For further attachment of the base frame 2 to the wheel supports 6, 7, said base frame 2 can be welded together with said tongue 69, 79. In certain embodiments, the upper side 21 of the base frame 2 may be provided with a through hole (not shown) adjacent to said tongue 69, 79 for an even better fi xering by welding or with pins or screws or the like via said holes.
    The adjustment or increase of the bending resistance - or span of the ski ~ depends on the distance D from a plane P (shown in Fig. 7) on the upper side 21 of the base frame 2 to position the attachment of the rod 50, normally corresponding to the attachment holes 63, 73. The distance D may need to have a minimum value of D> H / 2, preferably in the range 0.6-0.9 H to ensure a lever long enough to provide satisfactory adjustment of the bending resistance. When the bending resistance of the base frame 2 is increased by screwing the tension bolts 51, 52 further into the tension screws 53, 54, the bases 2 - as previously mentioned - will be forced to set themselves for a slightly curved shape in an upward direction (not shown).
    Fig. 6 is a perspective view of an enlarged detail showing the underside of the rear part of the roller ski 1. The rear wheel 4 is partially shown and is rotatably axially axed (not shown) to the rear wheel axle recesses 70A, 71A (not shown) on the rear wheel support arm 7 arm 70. The front wheel 6 is axially axed to the front wheel fixation recesses 60A, 61A on 10 The arm 60 of the front wheel support 6 in the same manner (not shown). The tension bolt 52 extends horizontally from the center line of the rod 50.
    Fig. 7 is an enlarged detail of a cross-sectional front view of said roller ski 1 where the front part of the roller ski 2 is shown. In this embodiment, the base frame 2 has a hollow, closed cross-sectional profile, with relatively thin walls, which should preferably have a thickness of 0.5-2 ITIIII.
    The left front side 64 and the right front side 67 of the front wheel support 6 are shown. It is further shown how the front tongue 69 on the front wheel support 6 supports the base frame 2, as mentioned earlier.
    The front wheel 3 is fixed to the front wheel support 6 in such a way that the center line of the rod 50 substantially coincides with the center point of said front wheel 3, as shown in Fig. 7. The same can also apply to the rear wheel, which can be advantageous in some applications.
    The tongue 69, 79 (Figs. 7, 8) extends in a horizontal plane above the upper edge of the other parts of the wheel support 6, 7, which results in a total height h of the wheel support which is greater than the height H of the base frame 2, which in in turn enables positioning of the lower edge of the wheel support below the underside 24 of the base frame 2, which ensures a secure interaction between the underside 24 of the base frame 2 and the wheel supports 6, 7.
    The vertical line of symmetry of the base frame 2 should pass through the center line of the rod 50.
    The base frame 2 is provided with grooves 220, 230 (shown in Fig. 7) which extend along substantially the entire length of the long sides 22, 23 of the base frame 2. These grooves 220, 230 increase the bending resistance of the long sides 22, 23 of the base frame 2. Thereby also increasing torsional rigidity.
    Fig. 8 is an enlarged detail of a cross-sectional side view of said roller ski (shown in Fig. 5), showing the rear part of the roller ski.
    The adjusting mechanism comprises a tension bolt 51, 52 and tension screws 53, 54, which in the preferred embodiment are provided with threads, mainly on the front and rear parts of the rod 50. In another embodiment, the rod has 50 threads over substantially its entire surface. Referring to Figs. 8 and 9, the tension bolt 51, 52 is adjustably screwed onto the tensioning screw 53, 54 of the rod 50. A collar 55, 56 extending in the radial direction secures the tensioning screw 53, 54 to the wheel supports. 6, 7, i.e. allows all other parts of the tension screw 51, 52 to rotatably fit into the fastening hole 73, except for the collar 56, which has a larger diameter than the fastening hole 73. The threaded part of the tension bolt 51, 52 is easily screwed onto the rod 50 threads, which is facilitated by a hexagonal section.
    When the tension bolt 51, 52 is tightened, the curvature of the base frame 2 increases and when the tension bolt 51, 52 is screwed backwards, the curvature of the base frame decreases.
    It is easy to manually adjust the bending resistance of said roller ski by hand by using simple tools. The adjustment can even be done manually without the need for tools.
    Fig. 9 is an enlarged exploded perspective view of the underside of the front part of said roller ski 1. The front tension screw 51 is inserted through the front mounting hole 63 and screwed onto the front tension screw 53 of the rod 50.
    The front wheel support 6 includes a front mounting hole 63 on the u-shaped front portion 62 of the front wheel support 6. The side 65 is part of the u-shaped front part 62. The front wheel support 6 also comprises wheel mounting recesses 60A, 61A on the arms 60, 61. The tongue 69 has a rounded front in this embodiment but can have other shapes as well.
    In a preferred embodiment (Fig. 6), the roller ski 1 comprises a base frame 3 with a front wheel 3 and a rear wheel 4 and where said wheels 3, 4 are attached to said base frame 2 by wheel supports 6, 7. As mentioned earlier, a tensile stress support is device 5 attached to said base frame 2 and arranged to assist in increasing the bending resistance of said base frame 2. The said tensile stress support device 5 is further arranged with an adjusting mechanism 51-54, arranged to enable said bending resistance to be adjustable.
    The base frame 2 of the roller ski 2 is bent - curved - upwards in a substantially vertical direction and is then axed in said bent position by the tensile stress supporting device 5. As a result of bending of the base frame 2 of the roller ski 1, a tensile force is applied on the tensile support device 5.
    Said tensile force applied to the tensile support device 5 increases further when a weight - the weight of the skier - is placed on the base frame 2. The weight gives rise to a compression force which affects the base frame 2 of the roller ski 1 in a substantially vertical and downward direction due to gravity.
    Said compression force, which would bend the base frame 2 of the roller ski 1 in the same direction as the direction of said compression force, is counteracted by the tensile support device 5 which (more or less) resists tensile forces.
    Since the tensile support device 5 resists tensile forces, it assists in increasing the bending resistance of the base frame 2 and said base frame 2 is secured from being bent by the weight placed on the base frame 2. Consequently, the base frame 2 can be optimized (more or less) to withstand only compressive forces. torsional forces, while the bending resistance is handled by the tensile stress support device 5. Thanks to this, the base frame can be designed so that it maintains a very low weight and is optimized to be manufactured at low cost. Tensile support device 5 can be more or less different types of devices, eg drawbar, wire, several wires, one string, several strands that can handle tensile forces (without the need to absorb compressive force) and can therefore be of low cost. and easy to replace. Instead of being made of steel, the tensile support device 5 can be made of other materials, eg polyester.
    In another, simpler embodiment, the tensile support device 5 is arranged to permanently assist in increasing the bending resistance of said bazaar 2, but without being provided with an adjusting mechanism 51-54, which means that said bending resistance is not adjustable.
    The invention also relates to a method for manufacturing said roller ski 1, providing a base frame 2, providing a front wheel 3 and a rear wheel 4, attaching said wheels 3, 4 to said base frame 2 by wheel supports 6, 7 characterized in that a tensile stress supporting device 5 is attached to said base frame 2 and arranging said tensile support device 5 to assist in increasing the bending resistance of said base frame 2. As will be appreciated by those skilled in the art, a number of changes and modifications may be made. of the above-described and other embodiments of the invention in question, without departing from its scope as described in the appended claims. For example, the base frame of the invention is described as having a converging shape, but it is to be understood that it may, of course, have other shapes as well, as well as other closing or opening hollow cross-sectional profiles other than the hollow rectangular cross-sectional profile described above. in accordance with the invention.
    The perforations on the underside of the base frame can of course be of a different design / shape and still provide good torsional rigidity without deviating from the scope of the invention.
    The person skilled in the art realizes that the base frame can be produced from a large number of materials, eg polymeric composites, and also by a large number of other production methods than described above, eg deformation, extrusion, etc. and still achieve the principles of the invention.
    As already mentioned, the base frame can be attached directly to the tensioning support (ie not via the wheel supports). Furthermore, the base frame can be fixed to the wheel supports by using only the tensioning support device and it is understood that other fastening mechanisms can also be used, such as bolting, welding or by screwing the attached base frame to the wheel supports. Incidentally, the skilled person realizes that the wheel supports (or only one of them) can be integrated with the base frame by using wheel supports which are manufactured as part of the base frame, i.e. without constituting separate parts before mounting.
    If the front and rear ear recesses in the base frame are to be welded together with the wheel supports, the fitting permission between the recesses and the wheel supports does not have to be exact, ie a space may exist between the recesses and the wheel supports.
    The scope of the invention is not limited to the adjustment mechanism described above.
    The adjustment mechanism can of course be replaced with other solutions already known per se and many other well-known mechanisms can thus be used to obtain the same functionality.
    权利要求:
    Claims (14)
    [1]
    1. PATENT REQUIREMENTS
    [2]
    2.. Roller ski (1), comprising a base frame (2) with a front wheel (3) and a rear wheel (4), said wheels (3, 4) being attached to said base frame (2) by wheel supports (6, 7) characterized in that a tensile support device (5) is attached to said base frame (2), arranged to assist in increasing the bending resistance of said base frame (2).
    [3]
    3.. Roller ski according to claim 1, characterized in that said tensile stress supporting device (5) is provided with an adjusting mechanism (51-54), arranged to enable said bending resistance to be adjustable.
    [4]
    4.. Roller ski according to claim 1 or 2, characterized in that said tensile stress support device (5) comprises at least one wire-like device, arranged to withstand considerably much higher tensile force than compression force.
    [5]
    5.. Roller ski according to claim 2 or 3, characterized in that said tensile support device (5) comprises a tensioning screw (53, 54) and a tension bolt (51, 52).
    [6]
    6.. Roller ski according to claim 4, characterized in that said tensioning screw (53, 54) is integrated with said wire-like device, which is preferably in the form of a string / rod arranged not to be rotated due to frictional force from said bolt (51, 52).
    [7]
    7.. Roller ski according to any one of the preceding claims, characterized in that said base frame (2) has a hollow, closed cross-sectional profile, made of relatively thin walls.
    [8]
    8.. Roller ski according to any one of the preceding claims, characterized in that said base frame (2) is made of metal, preferably steel.
    [9]
    9.. Roller ski according to claim 7, characterized in that said base frame (2) is made of a bent disc, joined together by one or more welds, preferably on one of its sides (24). 10 15 20 25
    [10]
    10.
    [11]
    11.
    [12]
    12
    [13]
    13.
    [14]
    Roller ski according to Claim 8, characterized in that at least one side, preferably at least the underside (24), is provided with perforations (26). Roller ski according to any one of the preceding claims, characterized in that said tensile support device (5) is indirectly attached to said base frame (2). Roller ski according to claim 10, characterized in that said wheel support (6, 7) are separate parts, and that said base frame (2) is attached to said wheel support (6, 7) at least in part by said tensile support device (5). . Roller ski according to claim 11, characterized in that said wheel supports (6, 7) are arranged with at least one projecting part (62, 72) arranged to fit into a corresponding recess (24A, 24B) in an end wall of said base frame (2) for to arrange fi xering, at least laterally. Roller ski according to claim 12, characterized in that said support (6, 7) has a projecting device / tongue (69, 79) which provides support in the vertical direction of the base frame (2) on the support (6, 7). Method for manufacturing a roller ski (1), providing a base frame (2), providing a front wheel (3) and a rear wheel (4), attaching said wheels (3, 4) to said base frame (2) by wheel support ( 6, 7), characterized in that a tensile support device (5) is attached to said base frame (2) and that said tensile support device (5) is arranged to assist in increasing the bending resistance of said base frame (2).
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    同族专利:
    公开号 | 公开日
    SE533953C2|2011-03-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2019-01-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    SE0950342A|SE533953C2|2009-05-14|2009-05-14|Rullskidor|SE0950342A| SE533953C2|2009-05-14|2009-05-14|Rullskidor|
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