• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
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  • 优先权
    • 专利摘要:
    A toy-building element (10) for a toy-building system in which toy-building elements (10) can be releasably coupled to one another using an interference fit between coupling studs (15) of one toy-building element (10) inserted in matching openings in another toy-building element (10). The toy-building element (10) comprises - a body part with a top face (13), a bottom face (12) and one or more sidewalls (14) that extend around the outer periphery of the toy-building element (10), the one or more flat sidewalls (14) at least partially define the interior (19) of the toy-building element and the sidewalls (14) extend between the top face (13) and the bottom face (12) with the sidewalls (14) being connected to one another at right angles to form sharp corners, - at least one cylindrical coupling stud (15) extending at a given height (h) from the top face (13), - at least one projection (20) extending inside the interior (19) for forming an opening in the bottom face (12) in which a coupling stud (15) fits with an interference fit, - wherein the at least one projection (20) comprises four substantially flat contact walls (22) extending perpendicularly to the bottom face (12) and the four contact walls (22) being arranged in a squared arrangement with each of the four contact walls (22) arranged at 45° angles with the side walls (14).
    公开号:DK201670684A1
    申请号:DKP201670684
    申请日:2016-09-06
    公开日:2018-04-03
    发明作者:Janus Juul Rasmussen；Asmus Færing Asmussen
    申请人:Valcon Design As；
    IPC主号:
    专利说明:

    <1θ> DANMARK
    0°) DK 2016 70684 A1
    PATENTANSØGNING
    (12)
    Patent- og
    Varemærkestyrelsen (51) Int.CI.: A63H 33/08 (2006.01) (21) Ansøgningsnummer: PA 2016 70684 (22) Indleveringsdato: 2016-09-06 (24) Løbedag: 2016-09-06 (41) Aim. tilgængelig: 2018-03-23 (71) Ansøger: VALCON DESIGN A/S, Christianshusvej 187, 2970 Hørsholm, Danmark (72) Opfinder: Janus Juul Rasmussen, Granvej 55, 3200 Helsinge, Danmark Asmus Færing Asmussen, Bøgeparken 1,2800 Kongens Lyngby, Danmark (74) Fuldmægtig: NORDIC PATENT SERVICE A/S, Bredgade 30,1260 København K, Danmark (54) Benævnelse: A TOY-BUILDING ELEMENT (56) Fremdragne publikationer:
    GB 935308 A US D616046 S US 2011/0021107 A1 WO 98/11968 A1 US 2014/0227937 A1 WO 2014/009345 A1 (57) Sammendrag:
    A toy-building element (10) for a toy-building system in which toy-building elements (10) can be releasably coupled to one another using an interference fit between coupling studs (15) of one toy-building element (10) inserted in matching openings in another toy-building element (10). The toy-building element (10) comprises - a body part with a top face (13), a bottom face (12) and one or more sidewalls (14) that extend around the outer periphery of the toy-building element (10), the one or more flat sidewalls (14) at least partially define the interior (19) of the toy-building element and the sidewalls (14) extend between the top face (13) and the bottom face (12) with the sidewalls (14) being connected to one another at right angles to form sharp corners, - at least one cylindrical coupling stud (15) extending at a given height (h) from the top face (13), - at least one projection (20) extending inside the interior (19) for forming an opening in the bottom face (12) in which a coupling stud (15) fits with an interference fit, - wherein the at least one projection (20) comprises four substantially flat contact walls (22) extending perpendicularly to the bottom face (12) and the four contact walls (22) being arranged in a squared arrangement with each of the four contact walls (22) arranged at 45° angles with the side walls (14).
    Fortsættes ...
    DK 2016 70684 A1
    DK 2016 70684 A1 i
    A TOY-BUILDING ELEMENT
    TECHNICAL FIELD
    The disclosure relates to a toy-building element for a toybuilding system in which toy-building elements can be releasably coupled to one another using an interference fit between coupling studs of one toy-building element inserted in matching openings in another toy-building element.
    BACKGROUND
    Lego® manufactures and sells a toy-building system in which toy-building elements can be releasably coupled to one another using an interference fit between coupling studs of one toybuilding element inserted in matching openings in another toy-building element.
    Most Lego® pieces have two basic components: coupling studs on top and tubes on the inside extending downwards from the top. A piece's coupling studs are slightly bigger than the space between the tubes and the walls or projections from the walls. When pieces are pressed together, the coupling studs push the walls out and the tubes in. The material is resilient and tries to retain its original shape, so the walls and tubes press back against the coupling studs. In the process, the coupling studs will also slightly deform, but due to the high rigidity of the studs this deformation is small compared to the pushing out of the walls and pushing in of the tubes. Friction prevents the two pieces from sliding apart. This stud-and-tube coupling system uses an interference fit, a
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    DK 2016 70684 A1 firm, frietion-based connection between two parts without the use of an additional fastener.
    Cylindrical coupling studs extend at a given height above the top portion of the toy-building element. Inner tubes and inner ribs are provided for engaging the coupling studs with an interference fit that allows the bricks to be releasably coupled to one another.
    Basic Lego® building pieces are e.g. 2x2 plates and 2x4 plates, 2x2 bricks and 2x4 bricks, but this list is far from exhaustive and many other variations in size and shape exist.
    Lego building elements start out as plastic granules composed primarily of acrylonitrile butadiene styrene. A highly automated injection molding process turns these granules into recognizable elements such as e.g. bricks and plates. The making of a Lego toy-building element requires high temperatures and large powerful injection molding equipment.
    The injection molding equipment melts the granules at temperatures of up to 232 degrees C, inject the melted ABS into molds and apply between 25 and 150 tons of pressure. After about seven seconds, the new Lego toy-building elements cool and fall onto a conveyor. At the end of the conveyor, they fall into a bin.
    A major cost factor in the production process of such toybuilding elements is the fact that they have to be manufactured with a relatively high precision and with low
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    DK 2016 70684 A1 tolerances in order to have a reliable interference fit between two toy-building elements, i.e. in order to ensure that the interference fit engages and disengages with the same force, and stays the same within limits, also for older used toy-building elements, and under different circumstances, such as e.g. temperature and different number of studs that are engaged between two toy-building elements.
    Production of components is subject to variation. The component is designed with a certain tolerance for each dimension. The tolerance is a specification of how large a variation that is permissible on the given dimension. Components with tight tolerances are generally more expensive to produce. For injection-molded components this is an effect of higher precision of molds required, longer cycle times and in general a more sophisticated production technique.
    Mechanical Interfaces are often designed as press fits where a geometric overlap between the parts ensures contact forces between the parts. In such Mechanical Interfaces, a small variation in overlap can cause a large variation in contact force. The relation is defined by the stiffness of the components .
    Toy-building elements, such as those in the Lego® toy building set, require very high precision production since a very small variation in the overlap causes a large variation in contact force .
    W02014009345 disclosed a toy-building element in the form of a brick according to the preamble of claim 1.
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    The inventors have arrived at the insight that the design of the toy-building elements should be changed in order to reduce the need for very high precision during production. The inventors realize that the mechanical interfaces can therefore be designed more flexible to reduce sensitivity towards variation. The reduced stiffness of the parts can be compensated by designing a larger overlap, such that the target for the interface force can be achieved.
    A mechanical interface with large overlap and small stiffness will be less sensitive to variation in overlap than an interface with small overlap and large stiffness. As a consequence, the toy-building elements can be produced with larger tolerances while maintaining a similar variation in force of the interference fit, both for engaging and for disengaging. Alternatively, the tolerances can be maintained and the variation in force will then be decreased.
    It is therefore an object to provide a toy-building element that is less sensitive to production tolerances while maintaining the same reliability of interference fit. Alternatively, it is an object to provide a toy-building element that allows larger production tolerances while maintaining the same reliability of interference fit or to provide a toy-building element that with current production tolerances increases the reliability of interference fits.
    SUMMARY
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    The foregoing and other objects are achieved by the features of the independent claims. Further implementation forms are apparent from the dependent claims, the description and the figures .
    According to a first aspect, there is provided a toy-building element for a toy-building system in which toy-building elements can be releasably coupled to one another using an interference fit between coupling studs of one toy-building element inserted in matching openings in another toy-building element (10), the toy-building element comprising:
    a body part with a top face, a bottom face and one or more flat sidewalls that extend around an outer periphery of the toy-building element, the one or more flat sidewalls at least partially define the interior of the toy-building element and the flat sidewalls extend between the top face and the bottom face with the sidewalls being connected to one another at right angles to form sharp corners, at least one cylindrical coupling stud extending at a given height from the top face, and at least one projection extending inside the interior for forming at least one opening in the bottom face (12) in which a coupling stud fits with the interference fit, characterized in that the at least one projection comprises four substantially flat contact walls extending perpendicularly to the bottom face, the four contact walls being arranged in a squared arrangement with each of the four contact walls arranged at a 45° angle with the side walls.
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    The concept of the invention is to design the mechanical interfaces between the toy-building elements such that they are as flexible as possible while still being able to withstand the loads in the interface.
    By placing the contact walls in a squared arrangement with the contact walls at 45° angles to the sidewalls and in a way that the contact line between a stud and the contact wall concerned is in the middle of the contact wall, the contact wall becomes a beam with the load in the middle. Thus, the stud engages the contact wall at the point where it is most flexible, making the interference fit less sensitive to production tolerances.
    In the toy-building element disclosed in W02014009345, the projection is a tube with an annular cross-section with the outer surface of the tube being in the form of a circular cylinder. A projection with such a shape is very stiff i.e. not flexible. The outer surface of the tube at a contact line with a stud is convex and the overall shape of the tube results in a non-flexible engagement object. The same applies to the studs, which are also in the form of a tube with an annular cross-section and an outer surface in the form of a circular cylinder. Thus, in the prior art two very stiff objects engage one another and consequently production type tolerances need to be very tight, thereby increasing production costs. In the prior art and in the present toybuilding element, there are always three contact lines between the studs of one brick and the inner side of another brick. At least one contact line is formed by an engagement between the projection and a stud and at least one contact line is
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    DK 2016 70684 A1 formed by an engagement between a sidewall, or a rip projecting from the sidewall and the stud. The third contact line can be either between the stud and another projection or between the stud and another side wall. Two of the contact lines are spaced at 90° around the stud while the other contact line is spaced 135° from the first two contact lines.
    In a first possible implementation of the first aspect, the contact walls are substantially flat, i.e. planar.
    In a second possible implementation of the first aspect, the thickness of the contact walls follows the distribution of the bending moment applied to the contact wall when a stud is inserted.
    In a third possible implementation of the first aspect, the four contact walls of one projection together define an opening in which a coupling stud fits with an interference fit.
    In a fourth possible implementation of the first aspect, the side of the sidewalls facing the interior are provided with contact ribs that extend from the bottom face towards the top face .
    In a fifth possible implementation of the first aspect, a contact wall forms together with two side walls or with two contact ribs an opening in which a coupling stud fits with an interference fit with three contact lines and/or wherein a contact wall forms together with one side wall or one contact rib and one contact wall of another projection an opening in
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    DK 2016 70684 A1 which a coupling stud fits with an interference fit with three contact lines.
    In a sixth possible implementation of the first aspect, contact lines that are not associated with a contact wall coincide with the ribs, the contact lines extend preferably parallel with the axis of the coupling studs and extend even more preferably over the height.
    In a seventh possible implementation of the first aspect, two of the three contact lines are angularly spaced by a 90° angle from one another around the coupling stud with the third contact line being spaced by a 135° angle from each of the other two contact lines.
    In an eighth possible implementation of the first aspect, four contact walls of a projection are spaced from one another by a gap between the contact walls.
    In a ninth possible implementation of the first aspect, the four contact walls of a projection are connected to one to one another from a tube with a squared cross-sectional outline, the tube preferably extending to the bottom face.
    In a tenth possible implementation of the first aspect, the cross-sectional outline of the tube resembles or equals a rounded square, a square with rounded corners or a squircle.
    In an eleventh possible implementation of the first aspect, the toy-building element is provided with at least two of the
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    DK 2016 70684 A1 tubes with neighboring tubes being interconnected with one another at opposing corners of the tubes concerned.
    In a twelfth possible implementation of the first aspect, the wall thickness of the tubes concerned at the opposing corners is reduced relative to the wall thickness of the other corners of the tubes concerned.
    In a thirteenth possible implementation of the first aspect, the wall thickness of the tube is preferably substantially constant in the direction of the length of the tube and is varied along the circumference of the tube.
    In a fourteenth possible implementation of the first aspect, the wall thickness of the tube is varied along the circumference of the tube in order to obtain a homogeneously distributed stress level in the tube when a stud is disposed in an opening bordering the tube concerned or in the tube concerned.
    In a fifteenth possible implementation of the first aspect, the wall thickness of the tube is varied along the circumference of the tube in order to obtain maximum resiliency, i.e. maximum flexibility in relation to nonpermanent deformation by the insertion of a stud.
    In a sixteenth possible implementation of the first aspect, the wall thickness along the circumference of the tube is higher at the corners of the tube and higher in the middle of the extent of the tube between corners and lower in the remaining circumferential extent of the tube.
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    In a seventeenth possible implementation of the first aspect, the at least one cylindrical coupling stud having a given outer diameter, and wherein the size of the gap between opposing contact walls of a projection is slightly less than the diameter.
    In an eighteenth possible implementation of the first aspect, the circular outline of the coupling studs is slightly larger than the opening between the contact walls and the side walls or the ribs projections on the inner side of the side walls.
    In a nineteen possible implementation of the first aspect, the top face is provided with at least two rows of equidistantly spaced coupling studs in a squared pattern.
    In a twentieth possible implementation of the first aspect, the openings defined between the contact walls and the side walls or with ribs on the side of the sidewalls facing the interior are arranged in a pattern that matches the squared pattern .
    In a twenty-first possible implementation of the first aspect, the flat side walls meet one another at sharp corners.
    In a twenty-second possible implementation of the first aspect, the pitch between the coupling studs in the squared pattern is 8 mm.
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    In a twenty-third possible implementation of the first aspect, the height of a building element between the bottom face and the top face is 9.6 mm.
    In a twenty-fourth possible implementation of the first aspect, the length of a building element with a rectangular top face and bottom face outline is equal to the product of the number of coupling studs along the length of the building element times 8 mm, with 0.2 mm subtracted from the product to arrive at the length.
    In a twenty-fifth possible implementation of the first aspect, the width of a building element with a rectangular top face and bottom face outline is equal to the product of the number of coupling studs along the width of the building element times 8 mm, with 0.2 mm subtracted from the product to arrive at the width.
    In a twenty-sixth possible implementation of the first aspect, the coupling studs have a diameter D of 4,9 mm.
    In a twenty-seventh possible implementation of the first aspect, a contact wall is provided with a contact rib extending from the end of the contact wall at the bottom face towards the top face, a contact rib on a contact wall preferably being arranged to form the contact surface with a stud from another toy-building element.
    In a twenty-eighth possible implementation of the first aspect, the coupling studs having a continuous abutment face shaped as a cylinder face whose generatrices extend
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    DK 2016 70684 A1 approximately at right angles from the top face of the body part to the top of the coupling stud.
    In a twenty-ninth possible implementation of the first aspect, the toy-building element constitutes a toy-building brick.
    According to a second aspect, there is provided a method for manufacturing a toy-building element according to one or more of the foregoing claims, wherein the method includes injection molding the toy-building element in a mold that comprises at least 2 mold parts, where one of the mold parts comprises a mold core, which shapes the inner faces of the toy-building element, wherein the mold core comprises a recess to form the at least one projection.
    According to a third aspect, there is provided a molding tool for use in manufacture of a toy-building element according to one or more of claims 1 to 28, wherein the mold comprises at least two mold parts, where one of the mold parts comprises a mold core, which shapes the inner faces of the toy-building element, and wherein the mold core comprises a recess to form the at least one projection.
    These and other aspects and implementations of the invention will be apparent from the embodiment (s) described below.
    BRIEF DESCRIPTION OF THE DRAWINGS
    In the following detailed portion of the present disclosure, the invention will be explained in more detail with reference to the example embodiments shown in the drawings, in which:
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    Fig. 1 is an elevated view showing a toy-building element according to an example embodiment including its top face, Fig. 2 is an elevated view of the toy-building element of Fig. 1 showing its bottom face,
    Fig. 3 is a bottom view of the toy-building element of Fig. 1 with a coupling start of another toy-building element inserted in an opening in the bottom face,
    Fig. 4 is a bottom view of the toy-building element of Fig. 3 with a coupling start of another toy-building element inserted in an another opening in the bottom face,
    Fig. 5 is an elevated view showing the toy-building element according to another example embodiment showing its top face, Fig. 6 is an elevated view of the toy-building element of Fig. 5, showing its bottom face,
    Fig. 7 is a bottom view of the toy-building element of Fig.
    5,
    Fig. 8 is a detail of a toy-building element according to Fig. 1 or Fig. 5,
    Fig. 9 is a bottom view of another toy-building element according to yet another example embodiment,
    Fig. 10 is a detailed elevated view of the bottom face of another embodiment, and
    Fig. 11 is a detailed bottom view of the toy-building element of Fig . 10.
    DETAILED DESCRIPTION
    Figs. 1 to 4 illustrate a toy-building element according to a first example embodiment in various views. The toy-building
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    DK 2016 70684 A1 element 10 is part of aln toy-building system in which toybuilding elements 10 can be releasably coupled to one another using an interference fit between coupling studs 15 of one toy-building element 10 inserted in matching openings in another toy-building element 10. The toy-building elements 10 can all have identical shapes but also toy-building elements with different shapes can be assembled. The toy-building element is produced by injection molding in a mold with at least two mold parts.
    The toy-building element 10 has a body part with a top face 13, a bottom face 12 and one or more sidewalls 14 that extend around the outer periphery of the toy-building element 10. The top face 13 opposes the bottom face 12 and the sidewalls 14 connect the top face 13 to the bottom face 12. The sidewalls 14 are connected to one another at right angles and form 90° corners with sharp edges.
    The toy-building element in the embodiment shown in Figs. 1 to 4 is a toy-building brick with a cuboid body.
    The side faces 14 extend over a height H between the top face and the bottom face, and the sides faces 14 have a length L along a longer side of the toy-building element 10 and have a width W along the shorter side of the toy-building element 10 .
    The top face 13 of the toy-building element 10 according to the present embodiment is provided with two by four rows of equidistantly spaced coupling studs 15 in a squared pattern. The inner surface of the sidewalls 14 is provided with a
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    DK 2016 70684 A1 plurality of ribs 16 that each extend from the bottom face towards the top face 13. The ribs 16 protrude from the inner surface of the sidewalls.
    Two ribs 16 are located near each corner of the body of the toy-building element 10. In the toy-building element 10 according to the present embodiment, there are additional ribs 16 that are provided on the inner side of the longer sidewalls 14 on an imaginary line that extends at a right angle to the longer sidewalls 14 and through in the middle between the centers of two neighboring projections 20.
    The flat sidewalls 14 at least partially define the interior 19 of the toy-building element 10. The toy-building element 10 according to the present embodiment is provided with three projections 20 extending inside the interior 19. The projections 20 extend from the top face 13 towards the bottom face 12. The projections 20 extend in an embodiment all the way to the bottom face 12 so that the free end of the projections 20 is flush with the bottom face 12. In another embodiment, the projections 20 extend almost all the way to the bottom face 12.
    The projection 20 comprises four substantially flat contact walls 22 extending perpendicularly from the top face 13 to the bottom face 12. The four contact walls 22 are arranged in a squared arrangement with each of the four contact walls 22 arranged at 45° angles with the side walls 14. Thus, two pairs
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    DK 2016 70684 A1 of the contact walls 22 are opposing one another, with each of the pairs being at a 90° angle with the other pair.
    In the present embodiment, the four contact walls 22 of a projection 20 are connected to one another to form a tube with a squared cross-sectional outline. The cross-sectional outline of the tube resembles or equals a rounded square, a square with rounded corners or a squircle. In the present embodiment, the toy-building element 10 is provided with three tubes with neighboring tubes being interconnected with one another at opposing corners of the tubes concerned. The connection between neighboring tubes is formed by a narrow bridge 28 formed by reducing the thickness of the tubes at neighboring corners 24 so that the wall thickness at the connection between the tubes does not become higher than necessary and possible with respect to the injection molding process for producing the toy-building elements 10. Cutouts 29 are the result of the reduction in wall thickness at the meeting corners 24. The wall thickness of the tubes concerned at the opposing corners 24 is reduced relative to the wall thickness of the other corners 24 of the tubes concerned.
    The wall thickness of the tube is in an embodiment reduced in the direction of the length of the tube seen from the top face 13 to the bottom face 12 to provide draft for allowing the toy-building element 10 to be removed from the mold the injection molding process. The wall thickness of the sidewalls 14 is reduced accordingly in the direction from the top face to the bottom face in order to provide draft for allowing the toy-building element 10 to be removed from the mold. The draft
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    DK 2016 70684 A1 of parts of the toy-building element 10 is best shown in Fig.
    11.
    The wall thickness of the tube is in an embodiment varied along the circumference of the tube with the wall thickness of the tube being higher at the corners 24 of the tube and higher in the middle 26 of the extent of the tube between corners 26 and lower in the remaining circumferential extent of the tube, as illustrated in Fig. 8. Thus, the wall thickness of the tube is lowest in the area between the center of a conflict wall and a corner. This provides for an equal distribution of the stress upon the middle 26 of the extent of the tube being pressed by a study being inserted in an opening adjacent the contact wall 22 concerned.
    The projections 20 are sized and shaped for forming an opening in the bottom face 12 in which a coupling stud 15 fits with an interference fit. The opening with the correct size for an the interference fit with a stud 15 of another building element 10 is formed by a contact wall 22 together with two ribs 16 associated with a corner of the toy-building element 10, as shown in the upper portion of Fig. 4, or the opening with the correct size for an the interference fit with a stud 15 of another building element 10 is formed together with two ribs 16 associated with a corner of the toy-building element 10, as shown in the lower portion of Fig 4.
    The four contact walls 22 of one projection 20 together define an opening in which a coupling stud 15 fits with an interference fit with four contact lines, as shown in the upper portion of Fig. 3. Hereto, the distance D between the
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    DK 2016 70684 A1 surfaces of opposing contact walls 22 is selected to be slightly less than the diameter D of a stud 15 of another toy-building element 10.
    A contact wall 22 forms together with two contact ribs 16 an opening in which a coupling stud 15 fits with an interference fit with three contact lines as shown in the upper portion of Fig. 4. A contact wall 22 forms together with one rib 16 and one contact wall 22 of another projection 20 an opening in which a coupling stud 15 fits with an interference fit with three contact lines as shown in the lower portion of Fig. 4. The contact lines that are not associated with a contact wall coincide with the ribs 16. The contact lines extend preferably parallel with the axis of the coupling studs 15 and extend even more preferably over the height h of the coupling studs 15.
    For studs 15 that are not inserted into the center of a tube two of the thee contact lines are angularly spaced by a 90° angle from one another around the coupling stud 15 with the third contact line being spaced by a 135° angle from each of the other two contact lines. For studs 15 that are inserted in the center of a tube there are four contact lines equally distributed at a 90° angle.
    The wall thickness of the tube is varied along the circumference of the tube in order to obtain a homogeneously distributed stress level in the tube when a stud 15 is disposed in an opening bordering the tube concerned or in the tube concerned. The wall thickness of the tube is varied along
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    DK 2016 70684 A1 the circumference of the tube in order to obtain maximum resiliency against deformation by the insertion of a stud 15.
    The circular outline of the coupling studs 15 is slightly larger than the opening between the contact walls 22 and the ribs 16 on the inner side of the side walls 14.
    Figs. 5 to 7 illustrate another example embodiment of a toybuilding element 10 that is essentially identical to the toybuilding element illustrated with reference to Figs. 1 to 4, except that the toy-building element 10 has only two by two rows of studs 15 on the top surface 13 and only one projection 20 in the interior of the toy-building element 10.
    A toy-building element 10 with two by two rows of studs 15 and with four by two rows of studs in a squared arrangement has been shown in the above embodiments. However, the toybuilding element 10 can be provided with a top face 13 with at least two by at least two rows of equidistantly spaced coupling studs 15 in a squared pattern, without any upper limit to the number of rows in each direction. The openings defined between the contact walls 22 ribs 16 on the side of the sidewalls facing the interior 19 are arranged in a pattern that matches the squared pattern of the studs 15 on the top face 13 and the number of projections 20 and their placement is adjusted accordingly.
    In an embodiment, the pitch between the coupling studs 15 in the squared pattern is 8 mm. In an embodiment, the height H of a building element between the bottom face and the top face is 9.6 mm. In an embodiment, the length L of a building
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    DK 2016 70684 A1 element with a rectangular top face and bottom face outline is a equal to the product of the number of coupling studs along the length of the building element times 8 mm, with 0.2 mm subtracted from the product to arrive at the length L. In an embodiment, the width W of a building element with a rectangular top face and bottom face outline is a equal to the product of the number of coupling studs along the width of the building element times 8 mm, with 0.2 mm subtracted from the product to arrive at the width W. In an embodiment, the coupling studs have a diameter D of 4.9 mm.
    In an example embodiment illustrated in Fig. 9, the four contact walls 22 of a projection 20 are spaced from one another by a gap 29 between the contact walls 22. Otherwise, the projections 20 according to this embodiment function in the same way as in the other embodiments described herein.
    In the example embodiment of Figs. 10 and 11, each contact wall 22 is provided with a contact rib 16 extending from the end of the contact wall 22 at the bottom face towards the top face, a contact rib 16 on a contact wall 22 preferably being arranged to form the contact surface with a stud 15 from another toy-building element 10. In this embodiment, the ribs 16 form the contact surface of the contact walls 22 for contact with a stud 15 of another toy-building element 10.
    The toy-building elements 10 are manufactured by a method that includes injection molding the toy-building element 10 in a mold (not shown) that comprises at least 2 mold parts, where one of the mold parts comprises a mold core which shapes the inner faces of the toy-building element 10, wherein the
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    DK 2016 70684 A1 mold core comprises a recess to form the at least one projection 20.
    The toy-building element 10 is in the shown the Figs, is illustrated as a brick 10, but could just as well be a thinner element, i.e. with the lower height H, such a toy-building element resembling a plate.
    The invention has been described in conjunction with various embodiments herein. However, other variations to the disclosed embodiments can be understood and effected by those skilled in the art in practicing the claimed invention, from a study of the drawings, the disclosure, and the appended claims. In the claims, the word comprising does not exclude other elements or steps, and the indefinite article a or an does not exclude a plurality. A single processor or other unit may fulfill the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage. The reference signs used in the claims shall not be construed as limiting the scope.
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    权利要求:
    Claims (15)
    [1] 1. A toy-building element (10) for a toy-building system in which toy-building elements (10) can be releasably coupled to one another using an interference fit between coupling studs (15) of one toy-building element (10) inserted in matching openings in another toy-building element (10), the toybuilding element (10) comprising:
    a body part with a top face (13), a bottom face (12) and one or more flat sidewalls (14) that extend around an outer periphery of the toy-building element (10), the one or more flat sidewalls (14) at least partially define said interior (19) of said toy-building element and the flat sidewalls (14) extend between the top face (13) and the bottom face (12) with the sidewalls (14) being connected to one another at right angles to form sharp corners, at least one cylindrical coupling stud (15) extending at a given height (h) from the top face (13), and at least one projection (20) extending inside the interior (19) for forming at least one opening in the bottom face (12) in which a coupling stud (15) fits with said interference fit, characterized in that the at least one projection (20) comprises four substantially flat contact walls (22) extending perpendicularly to the bottom face (12), said four contact walls (22) being arranged in a squared arrangement with each of the four contact walls (22) arranged at a 45° angle with said side walls (14).
    [2] 2. A toy-building element (10) according to claim 1, wherein the four contact walls (22) of one projection (20) together
    02583-DK-P
    DK 2016 70684 A1 define an opening in which a coupling stud (15) fits with an interference fit.
    [3] 3. A toy-building element (10) according to claim 1 or 2, wherein said sides of said sidewalls (14) facing the interior (19) are provided with contact ribs (16) that extend from said bottom face (12) towards said top face (13).
    [4] 4. A toy-building element (10) according to claim 3, wherein a contact wall (22) forms together with two sidewalls (14) or with two contact ribs (16) an opening in which a coupling stud (15) fits with an interference fit with three contact lines and/or wherein a contact wall (22) forms together with one sidewall (14) or one contact rib (16) and one contact wall (22) of another projection (20) an opening in which a coupling stud (15) fits with an interference fit with three contact lines.
    [5] 5. A toy-building element (10) according to one or more of claims 1 to 4, wherein said four contact walls (22) of a projection (20) are connected to one to one another to form a tube with a squared cross-sectional outline, said tube preferably extending to the bottom face (12).
    [6] 6. A toy-building element (10) according to claim 5, wherein said cross-sectional outline of said tube resembles or equals a rounded square, a square with rounded corners or a squircle.
    [7] 7. A toy-building element (10) according to claims 5 or 6, provided with at least two of said tubes with neighboring
    02583-DK-P
    DK 2016 70684 A1 tubes being interconnected with one another at opposing corners (24) of said tubes concerned.
    [8] 8. A toy-building element (10) according to claim 7, wherein said wall thickness of said tubes concerned at said interconnected corners (24) is reduced relative to said wall thickness of said other corners (24) of said tubes concerned.
    [9] 9. A toy-building element (10) according to claim 8, wherein said wall thickness of said tube is varied along said circumference of said tube in order to obtain a homogeneously distributed stress level in said tube when a stud (15) is disposed in an opening bordering said tube concerned or in said tube concerned.
    [10] 10. A toy-building element (10) according to claim 8 or 9, wherein said wall thickness of said tube is varied along said circumference of said tube in order to obtain maximum resiliency against deformation by said insertion of a stud (15) .
    [11] 11. A toy-building element (10) according to claim 9 or 10, wherein said wall thickness along said circumference of said tube is higher at said corners (24) of said tube and higher in said middle (26) of said extent of said tube between corners (24) and lower in said remaining circumferential extent of said tube.
    [12] 12. A toy-building element (10) according to one or more of claims 1 to 11, wherein the at least one cylindrical coupling stud (15) having a given outer diameter (D), and wherein said
    02583-DK-P
    DK 2016 70684 A1 size (d) of said gap between opposing contact walls (22) of a projection (20) is slightly less than the diameter (D).
    [13] 13. A toy-building element (10) according to one or more of claims 1 to 12, wherein said circular outline of said coupling studs (15) is slightly larger than said opening between said contact walls (22) and said side walls (14) or said ribs (16) on said inner side of said side walls (14).
    [14] 14. A method for manufacturing a toy-building element according to one or more of the foregoing claims, wherein said method comprises injection molding said toy-building element (10) in a mold that comprises at least 2 mold parts, where one of said mold parts comprises a mold core which shapes said inner faces of said toy-building element (10), wherein said mold core comprises a recess to form said at least one projection (20).
    [15] 15. A molding tool for use in the manufacture of a toybuilding element (10) according to one or more of claims 1 to 14, wherein said mold comprises at least two mold parts, where one of said mold parts comprises a mold core which shapes said inner faces of said toy-building element (10), and wherein said mold core comprises a recess to form said at least one projection (20).
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    DK 2016 70684 A1
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    同族专利:
    公开号 | 公开日
    DK179581B1|2019-02-20|
    US20210331084A1|2021-10-28|
    EP3509718A1|2019-07-17|
    WO2018046288A1|2018-03-15|
    JP2019529011A|2019-10-17|
    MX2019002536A|2019-09-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB935308A|1960-07-06|1963-08-28|Godtfred Kirk Cheistiansen|
    WO1998011968A1|1996-09-17|1998-03-26|Lego A/S|A toy building set|
    USD616046S1|2008-08-05|2010-05-18|Ces English Co., Ltd.|Toy block|
    US20110021107A1|2008-09-12|2011-01-27|Texas Instruments Incorporated|Toy building block with embedded integrated circuit|
    WO2014009345A1|2012-07-11|2014-01-16|Lego A/S|A toy brick, a method of manufacturing a toy brick and a moulding tool for the manufacture of a toy brick|
    US20140227937A1|2013-02-11|2014-08-14|Cheng Pai-Chen|Toy Block|
    CH362354A|1958-01-28|1962-05-31|Kirk Christiansen Godtfred|Construction element for building toys|
    DE2242046A1|1972-08-26|1974-02-28|Lego As|COMPONENT FOR BUILDING TOYS|
    US9345981B1|2014-02-24|2016-05-24|Hasbro, Inc.|Multidimensional alignment spacing for toy building elements|
    法律状态:
    2019-02-20| PME| Patent granted|Effective date: 20190220 |
    2021-06-04| PBP| Patent lapsed|Effective date: 20200906 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201670684A|DK179581B1|2016-09-06|2016-09-06|A toy-building element|DKPA201670684A| DK179581B1|2016-09-06|2016-09-06|A toy-building element|
    MX2019002536A| MX2019002536A|2016-09-06|2017-08-21|A toy-building element.|
    US16/330,534| US20210331084A1|2016-09-06|2017-08-21|A toy-building element|
    JP2019533286A| JP2019529011A|2016-09-06|2017-08-21|Toy assembly element|
    PCT/EP2017/071021| WO2018046288A1|2016-09-06|2017-08-21|A toy-building element|
    EP17754367.5A| EP3509718A1|2016-09-06|2017-08-21|A toy-building element|
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