Sole element

Abstract

To provide an improved sole for a footwear product.SOLUTION: The present invention relates to a sole element (10) for a footwear product with slip resistance, particularly for a football shoe. The sole element includes: (a) a composite material element (11) having an anisotropic flexure characteristic; and (b) a polymer element (12) at least partially covering the composite material element (11).SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a sole element for a footwear article, a footwear article, and a method for producing the same. . [Background technology]

[0002] The soles of shoes and other footwear products play an important role in both the comfort felt by athletes and the It is also very important to ensure maximum performance. For example, when walking or gentle running, an important aspect is the stiffness of the sole. At running speeds, the athlete may find the flexible sole more comfortable. However, at higher running speeds, stiffer surfaces are required to prevent injury and improve athlete performance. The sole can be advantageous. Therefore, developers often want to create shoes that are comfortable and keep the wearer's feet comfortable. Trade-offs are made to provide a sole that protects and allows for maximum performance.

[0003] In US Patent Application Publication No. 2017 / 0157893, the tensile modulus is different from the compressive modulus. An anisotropic composite assembly is disclosed that includes a first layer having a modulus and exhibiting variable modulus behavior. The first layer buckles elastically under compression. The second layer has a compressive modulus substantially equal to that of the first layer. The first and second layers are bonded together and the assembly comprises a first The outer surface of the layer is bendable in a first direction when in compression, and the assembly is bendable in the first direction. The assembly has a first bending stiffness while bending in the direction of the first layer. When in the bent state, the assembly is bendable in a second direction opposite to the first direction, and the assembly While bending in the direction, the flexible member has a second bending stiffness greater than the first bending stiffness.

[0004] However, such anisotropic composites, due to their weight and thickness, provide the perfect sole. Unfortunately, such anisotropic composites do not bond well to other materials. There is a tendency not to.

[0005] In International Publication No. 2018 / 118430, a first side, a second side, an outer periphery, and a first side at least one opening extending through the plate body to the second side; and Sole plate for an article of footwear comprising a plate body having an inner periphery bounded by an opening The plate body is biased so that the inner periphery is in a first orientation relative to the outer periphery. Such a sole plate does not have anisotropic bending properties. It is the underlying object of the present invention to overcome this problem and to provide an improved sole for an article of footwear. do. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] US Patent Application Publication No. 2017 / 0157893 [Patent Document 2] International Publication No. 2018 / 118430 Brochure Summary of the Invention

[0007] This object is achieved by the teaching of the independent claims, in particular by providing a non-slip footwear article, in particular for footwear. This is achieved by a sole element for a ball shoe, which has (a) anisotropic curvature (b) a composite element having a bending property; and (b) a polymer element at least partially covering the composite element. Therefore, the anisotropic bending properties of the composite elements are essential for maximum comfort and performance. This gives the sole elements anisotropic bending properties. The polymer elements have a small Each may include an opening to expose at least a portion of the composite element.

[0008] The polymer element has at least one stud dome for supporting the stud tip. stud dome), and the stud dome and / or stud tip may be substantially Does not overlap composite elements.

[0009] An embodiment of the present invention provides a sole for a non-slip footwear article, in particular for a football shoe. The sole element comprises: (a) a composite element; and (b) a composite element having at least one a partially covering polymer element with at least one opening to expose a small portion of the composite element; and a polymer element that exposes at least a portion of the sole element away from the opening. The bending properties can be manipulated by the opening, as the material bends more easily through the opening than through the hole. If necessary, the shape of the opening, e.g., oval or circular, can be used to manipulate the bending direction. Therefore, it is possible to use composite elements that do not have anisotropic bending properties themselves. However, the anisotropic bending properties can be manipulated within the sole element so that the sole element has anisotropic bending properties. It can be made.

[0010] The polymer element has at least one stud dome for supporting the stud tip. The stud domes may be substantially free of overlap with the composite element.

[0011] The composite element may have anisotropic bending properties.

[0012] Another embodiment is a sole element for a non-slip footwear article, in particular for a football shoe. The sole element comprises: (a) a composite element; and (b) a composite element at least partially formed on the composite element. a polymer element that generally covers at least one stud for supporting the stud tip; a polymer element with a stud dome, the stud dome substantially overlapping the composite element; The inventors believe that such a structure can be used to fabricate an entire article of footwear. It has been found that the weight can be reduced and the structure simplified. At least one opening may be provided to expose at least a portion of the composite element.

[0013] Virtually no overlap means that the soleplate is perpendicular to the longitudinal axis. Looking at the sole elements, for example, at a right angle to the ground-facing surface of the sole element, there is virtually no overlap. In particular, "substantially" can mean that the overlapping of the sole element with the ground is When viewed perpendicular to the surface, it may be less than 20% of the cross-sectional area, preferably less than 10% This means that...

[0014] In either embodiment, at least one opening in the polymer element extends longitudinally of the sole element. The length of the at least one opening along the longitudinal direction may be It may be longer than the width of the sole element along a direction substantially perpendicular to the direction. The sole element is then laterally spaced about the length of the sole element on the right side relative to the left side of the sole element. At least one opening allows for directional bending to improve the athlete's mobility. , may be located in the midfoot region of the sole element.

[0015] All of the described embodiments provide optimal bending characteristics, e.g., bending stiffness of the sole element. The improved method relates to a non-slip footwear product, such as a football shoe or footwear. Preferably, it is a ball boot. Alternatively, the sole element according to the invention may be any other suitable boot. shoes or boots of a type, especially for athletic activities, e.g. running shoes, tennis shoes It can be used for shoes, hiking shoes, hiking boots, etc.

[0016] The anisotropic bending property can be a bending stiffness. Thus, the sole element is The bending stiffness in one direction can be lower than in another. The stiffness can be made lower in one direction than in the other. The bending stiffness of the sole elements can be optimized to suit the specific requirements of the specific The polymer element bonds well to the composite element to achieve a suitable thickness and light weight. A complete sole element can be formed.

[0017] The direction of bending of the sole plays an important role in the comfort and performance of the shoe. element, sole element, or both composite and sole elements in the toe area of ​​the sole element. a first bending stiffness for the upward bending of the sole element and a second bending stiffness for the downward bending of the sole element in the toe region. and a second bending stiffness relative to the first bending stiffness, the second bending stiffness being less than the first bending stiffness. Sai.

[0018] Therefore, the composite element, the sole element, or both the composite element and the sole element the toe region of the element can bend downward more easily than upward, As a result, the sole functions optimally when running, while preventing excessive upward bending of the toes. This prevents foot injuries caused by the footwear being worn downwards. upwards refers to the direction in which the footwear is normally worn. In other words, the sole element is more likely to plantarflex than to dorsiflex. It's easy to do.

[0019] The inventors have found that limiting dorsiflexion helps reduce foot injuries, while facilitating plantarflexion For example, it has been found that this can optimize performance while running.

[0020] The sole element bends downward more easily than upward in the toe region of the sole element. It can bend, but only up to a certain angle. The shape can limit the downward bending of the sole element. The studs can interact with each other to affect further bending of the sole element Also, in the upward direction, the sole element has a certain bending range, e.g., an upward bending of 40-45°. For a specific bending range, the bending angle can be adjusted to It is also possible to make the bending stiffness for the upward bending and downward bending the same. It can be between 20° and a downward bend of 20°.

[0021] The composite element may be located only in the forefoot region of the sole element. It was found that the stiffness provided by the composite elements in the forefoot region of the element was most important. Therefore, this structure provides a desirable degree of stiffness while maintaining the overall stiffness of the sole element. This allows for a reduction in weight.

[0022] The length of the composite element can be adapted for a particular purpose. For example, the composite element can be are designed for use on hard surfaces rather than non-slip footwear intended for use on soft surfaces such as , for example, tarmac or polymer-coated concrete such as Tartan®. For non-slip footwear intended for use on dirt or tarmac By varying the length of the composite elements, the sole element This can change the overall stiffness of the bearing, which can affect performance.

[0023] As noted above, in some embodiments, the polymer element is used to support the stud tip. The studs may be provided with at least one stud dome for example at the foot. The stud domes may be any ground-engaging element for a ball boot. Preferably, the stud tip is manufactured and provided integrally with the stud element. Alternatively, the stud tip may be injected into the top of the stud dome in the first step. The stud dome and polymer element are then poured over the stud tip. Alternatively, the stud tip is screwed into the threads on the stud dome. The stud tip may comprise a different material than the stud dome, and the stud tip may Preferably, the material comprises a TPU material, which has high abrasion resistance.

[0024] The stud domes do not need to overlap the composite, i.e., the stud domes are The stud may not be positioned below the composite element in the normal orientation of the article of footwear. The tips may not overlap the composite element, i.e. the stud tips may not overlap the composite element of the footwear product in use. Although it may not be located below the composite element in the normal orientation, it may be located at least below the stud dome. One is that at least one area, especially the perimeter of the stud dome, is made up of composite elements and at least There is a slight overlap.

[0025] Provides hollowed-out stud areas to provide a lightweight yet strong sole element A technique called "coring" must be applied behind the stud to prevent This provides a consistent material thickness for the sole. If there is substantial overlap with the composite element, especially if it overlaps more than the perimeter of the stud dome, Such coring techniques must be applied to composite elements, which is difficult and expensive. This will reduce the stiffness provided by the composite element.

[0026] The polymer element may comprise a polyamide. Polyamides such as polyamide 12 have shown excellent It has bonding properties.

[0027] The composite elements may include carbon fiber. Carbon fiber composites are lightweight yet very strong.

[0028] The composite element has its ground-facing surface at least partly covered by the polymer element, e.g. Only 50-65% of the surface area may be covered. Conversely, the top surface of the composite element is essentially polymer. - may not be covered by element 12.

[0029] Alternatively, the composite element may be essentially completely encased in the polymer element. This allows the composite elements to be optimally protected from dirt and abrasion. This does not necessarily mean that 100% of the surface of the composite element is covered by the polymer element. For example, up to 10%, preferably up to 20%, of the surface of the composite element is covered by the polymer element. The insulating layer may be uncovered, for example to provide an opening as described below.

[0030] The polymer element may comprise at least one opening, e.g., to allow access to the bottom side (e.g., This opening allows for the exposure of a portion of the composite element on the side facing the ground. This helps to provide sufficient flexibility in the bending direction, i.e., a sufficiently small bending stiffness. By means of a port, a polymer element is injected onto the composite element, as described further below. Such openings are advantageous from a production standpoint, since the composite element can be fixed in the mold during It is advantageous.

[0031] The upper surface of the sole element can be essentially flat. For example, the upper surface can be essentially smooth. It is possible to make the surface smooth, i.e., essentially even. The upper surface may be more easily attached to further components, such as components of an upper or other sole element. This allows for easy joining.

[0032] The contour of the composite element may be essentially smooth. means that the composite element can essentially be free of any sharp features. A sharp feature is narrower than 1 mm, preferably narrower than 2 mm, more preferably narrower than 5 mm The composite element can be of any shape with a narrower width. Sharp contours are prone to fracture points for composite elements. ,This structure allows for more resilient composite elements.

[0033] The sole element may further comprise an insole board attached to the polymer element. The insole board can provide additional rigidity to the sole element. Polyamide, etc. Due to the excellent bonding properties of the polymer, the insole board bonds very well to the polymer element. do.

[0034] The insole board may be arranged as a forefoot insole board. The board and the first forefoot region may overlap partially or completely. It is possible to further adjust the bending stiffness of the roller elements.

[0035] The insole board contains polyether block amide or thermoplastic polyurethane. These materials have good bonding properties and durability. The sole element and / or the composite element may have a non-linear bending stiffness. Therefore, the torque required to bend the sole element and / or composite element is a function of the bending angle. It can grow nonlinearly as a number.

[0036] The bending stiffness of the sole element and / or composite element is greater in the first bending range than in the second bending range. For example, the bending stiffness can be increased by bending angles greater than 45 degrees (the For bending angles less than 45 degrees (first bending range) than for bending angles less than 45 degrees (second bending range) can be made smaller.

[0037] The rear portion of the composite element may be wider than the front portion of the composite element. The rear portion of the composite element may be closer to the heel region, while the rear portion of the composite element may be closer to the heel region. do.

[0038] The composite element may further comprise at least one slit (hereinafter also referred to as groove). At least one groove can help to generate better and more tailored bending characteristics of the sole element. Grooves are also advantageous from a production point of view, as they can act as injection gates. Grooves may be located in other areas, but are preferably not located in the area between the second and third front rows of studs, in order to simplify production and to ensure sufficient support and comfort for the wearer's foot. In other words, grooves cannot be located in the midfoot region of the sole element.

[0039] The groove may be disposed substantially along the longitudinal direction of the sole element. It may extend longitudinally from the forward end of the composite element to the aft end of the composite element. Thus, for example, the thumb may have a different flexibility than the other fingers. The bending stiffness of the control elements can be further adjusted to better suit the needs of specific athletic activities. is possible.

[0040] The invention further relates to a shoe comprising a sole element as described herein. Therefore, the shoes are made of a lightweight and durable material that provides optimal support and comfort. It has a rule element.

[0041] The shoe may further comprise an upper, the heel region of the upper being secured by stitching. The shoe upper can further be attached to the sole element by a forefoot This structure can be hung around the insole board in the upper area of ​​the shoe. The overall weight can be reduced while maintaining a good level of stability of the connection between the sole and the This can be done.

[0042] The present invention further relates to a method for producing a sole element for an article of footwear, the method comprising the steps of: (a) providing a composite element having anisotropic bending properties; and (b) over-injecting a polymer element into the composite element to at least partially cover the composite element.

[0043] The method includes forming at least one opening in the ground-facing side of the polymer element to form a composite element. The method may further include exposing a portion of the element.

[0044] The method comprises providing at least one stud tip in a polymeric element to support the stud tip. forming a stud dome, wherein the stud dome may not overlap the composite element; It may further include steps.

[0045] The present invention also relates to a method of producing a sole element for an article of footwear, the method comprising: (a) a composite (b) overinjecting the composite element with a polymer element to form a composite element. (c) at least partially covering the polymer element on the ground-facing side thereof; and forming another opening to expose a portion of the composite element.

[0046] The method comprises providing at least one stud tip in a polymeric element to support the stud tip. forming a stud dome, wherein the stud dome does not substantially overlap the composite element; The method may further include steps.

[0047] The composite element may have anisotropic bending properties.

[0048] The present invention also relates to a method of producing a sole element for an article of footwear, the method comprising: (a) a composite (b) overinjecting the composite element with a polymer element to form a composite element. (c) at least partially covering the substrate with a polymer to support the stud tip. forming at least one stud dome on the element, and / or a step where the stud tip does not substantially overlap the composite element.

[0049] The method includes forming at least one opening in the ground-facing side of the polymer element to form a composite element. The method may further include exposing a portion of the element.

[0050] The composite element may have anisotropic bending properties.

[0051] In either embodiment, at least one opening in the polymer element extends longitudinally of the sole element. The length of the at least one opening along the longitudinal direction may be It may be longer than the width of the sole element along a direction substantially perpendicular to the direction. to allow lateral flexion about the longitudinal direction of the sole element, on the right side relative to the left side of the sole element. At least one opening in the sole element can improve the mobility of the player. It may be located in the midfoot region.

[0052] All of the described embodiments are directed to an improved method of providing optimal sole element bending stiffness. Further details and technical effects and advantages are described in detail above with respect to the sole element. It is explained.

[0053] The step of over-infusing the composite element with the polymer element can be carried out by any suitable method known in the art. The composite element may be formed by a suitable technique, such as injection molding, in which a liquid polymer element is injected into a mold. The mold can be fixed in place while it is being pressed.

[0054] In this way, a good level of bonding between the composite and polymer elements can be achieved. In particular, small cracks and crevices in the composite elements can be filled by the polymer elements. It can be achieved.

[0055] The composite element is, as described in the context of production above, an upwardly directed a first bending stiffness for forward bending and a second bending stiffness for downward bending in the toe region and the second bending stiffness may be lower than the first bending stiffness.

[0056] The method includes forming at least one opening in the polymer element, as described above, to form multiple The method may further include exposing a portion of the composite element.

[0057] The method comprises: placing a composite element in a mold so that an opening is formed during over-injection; For example, the composite element may be placed in a cavity during overfilling. A ramp mechanism can be used to clamp at the clamping point, which allows for It prevents unintended movement of composite elements and provides a simple way to create openings during overfilling. In particular, one or more of the The openings can be formed by placing composite elements at placement locations on the surface of the mold. During over-injection, the over-injected material flows around the resting or clamping position. In a preferred embodiment, the opening is formed in the resting or clamping position. , a raised element on the inner surface of the first mold section presses the composite element against the inner surface of the second mold section. Thereby, the raised elements of the first mold element act as clamping elements.

[0058] The method includes attaching a composite element to a forefoot region of a sole element, as previously described herein. Further details and technical effects and advantages are set forth below. The points are described in detail above with respect to the sole element.

[0059] The method involves providing a polymer element, as described herein, to support the stud tip. The method may further include forming at least one stud dome.

[0060] The stud domes are positioned so as not to overlap the composite elements as described herein. It is possible.

[0061] The polymeric element may comprise a polyamide, e.g., polyamide 12, as described herein. That's fine.

[0062] The step of over-injecting, as described herein, essentially converts the composite element into a polymer element. The method may include completely encasing the material in a material.

[0063] The over-injecting step may be performed by applying pressure to the essentially flat upper surface of the sole element as described herein. The method may include forming a

[0064] The method, as described herein, forms an essentially smooth contour of the composite element. The method may further include steps.

[0065] The method includes attaching an insole board to a polymeric element as described herein. The method may further include steps.

[0066] The method includes placing an insole board in the forefoot region as described herein. The device may further include a top.

[0067] The insole board may be made of polyether block amide or It may also include thermoplastic polyurethane.

[0068] The sole element and / or composite element can have a nonlinear bending stiffness. The bending stiffness of the sole element and / or composite element can be smaller in the first bending range than in the second bending range. For example, the bending stiffness can be smaller for bending angles less than 45 degrees (first bending range) than for bending angles greater than 45 degrees (second bending range).

[0069] The rear of the composite element may be wider than the front of the composite element, as described herein. stomach.

[0070] The method includes forming at least one groove in a composite element as described herein. It may further include a step.

[0071] The grooves, as described herein, are disposed substantially along the longitudinal direction of the sole element. Good too.

[0072] The invention further includes the step of producing a sole element by the methods described herein. The present invention relates to a method for producing shoes that can be worn in a variety of positions.

[0073] The method of producing a shoe includes the steps of providing an upper, and forming a heel region of the upper. The method may further include attaching the upper to the sole element by sewing. The toe area may include steps that suspend the upper around the sole element as described herein. The sole element may be attached by a clamp.

[0074] The present invention includes the following embodiments. [1] A sole element (10) for a non-slip footwear article, in particular for a football shoe, , (a) a composite element (11) having anisotropic bending properties; (b) a polymer element (12) at least partially covering said composite element (11); A sole element (10) having: [2] A sole element (10) for a non-slip footwear article, in particular for a football shoe, , (a) a composite element (11); (b) a polymer element (12) at least partially covering said composite element (11); of said composite element (11) with at least one opening (14) on its ground-facing side a polymer element (12) exposing at least a portion thereof; A sole element (10) comprising: [3] A sole element (10) for a non-slip footwear article, in particular for a football shoe, , (a) a composite element (11); (b) a polymer element (12) at least partially covering said composite element (11); At least one stud dome (51a, 52a) for supporting the stud tip (51a, 52a) 3a, 53b, 54a, 54b, 15a), the polymer element (12) domes (53a, 53b, 54a, 54b, 15a) and / or said stud tips (51a, 52a) do not substantially overlap with the composite element (11), 2) and A sole element (10) comprising: [4] The polymer element (12) has at least one opening (14) to allow the composite element to The sole element according to either [1] or [3], wherein at least a part of the substrate (11) is exposed. Element (10). [5] The polymer element (12) has a small area for supporting the stud tips (51a, 52a). At least one stud dome (53a, 53b, 54a, 54b, 15a), Stud domes (53a, 53b, 54a, 54b, 15a) and / or said studs [1] or [2], in which the tip (51a, 52a) of the wire does not overlap with the composite material element (11). The sole element (10) according to any one of the preceding claims. [6] The sole element according to [2] or [3], wherein the composite element (11) has anisotropic bending properties. Element (10). [7] The polymer element is over-injected onto the composite element. 6] The sole element according to any one of [6]. [8] The composite element (11) is adapted to bend upward in the toe area of ​​the sole element (10). a first bending stiffness against downward bending in the toe region of the sole element (10); and a second bending stiffness relative to the first bending stiffness, the second bending stiffness being greater than the first bending stiffness.

[0023] 1. A small sole element (10) according to any one of [1], [6], or [7]. [9] the composite element (11) is arranged only in the forefoot region of the sole element (10); The sole element (10) according to any one of [1] to [8].

[10] The method according to any one of [1] to [9], wherein the polymer element (12) comprises polyamide. Rule element (10).

[11] The surface of the composite element (11) facing the ground is at least partially covered by the polymer element. The sole element (10) according to any one of [1] to

[10] , which is effectively covered.

[12] Any one of [1] to

[11] , wherein the upper surface of the sole element (10) is essentially flat. The sole element (10) as described.

[13] The outer shape of the composite material element (11) is basically smooth, The sole element (10) described above.

[14] [1] to further include an insole board attached to the polymer element (12).

[13] A sole element (10) according to any one of

[13] .

[15] Any one of [1] to

[14] , wherein the insole board is a forefoot insole board. A sole element (10) according to claim 1.

[16] The sole element (10) and / or the composite element (11) have a nonlinear bending stiffness. The sole element (10) according to any one of [1] to

[15] .

[17] The bending stiffness of the sole element (10) and / or the composite element (11) is [1] to

[16] , wherein the first bending range is smaller than the second bending range. Sole element (10).

[18] [1] ~ The rear part of the composite material element (11) is wider than the front part of the composite material element (11).

[17] . The sole element (10) according to any one of

[17] .

[19] Any of [1] to

[18] , wherein the composite material element (11) further comprises a slit (13). 1. The sole element (10) according to claim 1.

[20] The slits (13) are arranged substantially along the longitudinal direction of the sole element (10). The sole element (10) according to any one of [1] to

[19] , [twenty one] A shoe (30) comprising the sole element (10) according to any one of [1] to

[20] . [twenty two] The upper further comprises a heel region of the upper, the heel region of the upper being attached to the sole element (

[21] The shoe (30) according to

[21] , attached to the shoe (30). [twenty three] A method for producing a sole element (10) for an article of footwear, comprising: (a) providing a composite element (11) having anisotropic bending properties; (b) over-injecting a polymer element into the composite element (11) to form the composite element (11). At least partially covering the composite element (11); A method comprising: [twenty four] A method for producing a sole element (10) for an article of footwear, comprising: (a) providing a composite element (11); (b) over-injecting a polymer element into the composite element (11) to form the composite element (11). At least partially covering the composite element (11); (c) forming at least one opening (14) on the side of said polymer element (12) facing the ground; and exposing a portion of the composite element (11). A method comprising: [twenty five] A method for producing a sole element (10) for an article of footwear, comprising: (a) providing a composite element (11); (b) over-injecting a polymer element into the composite element (11) to form the composite element (11). At least partially covering the composite element (11); (c) a small amount of polymer element (12) for supporting the stud tips (51a, 52a) Form at least one stud dome (53a, 53b, 54a, 54b, 15a) Step, and the stud dome (53a, 53b, 54a, 54b, 15a) and and / or the stud tips (51a, 52a) do not overlap with the composite element (11). , step and A method comprising:

[26] At least one opening (14) is formed in the polymer element to allow the composite element (11) The method of any one of

[23] to

[25] , further comprising exposing a portion of the

[27] At least one of the polymer elements (12) is provided to support the stud tips (51a, 52a). The studs form one stud dome (53a, 53b, 54a, 54b, 15a). and the stud domes (53a, 53b, 54a, 54b, 15a) and / or Alternatively, the stud tips (51a, 52a) do not overlap the composite material element (11), The method according to

[23] or

[24] , further comprising the step of:

[28] The method according to claim 24 or 25, wherein the composite element (11) has anisotropic bending properties. .

[29] The composite element (11) is adapted to bend upward in the toe area of ​​the sole element (10). a first bending stiffness against downward bending in the toe region and a second bending stiffness against downward bending in the toe region.

[23] or the method according to

[0028] , wherein the second bending stiffness is less than the first bending stiffness.

[30] placing said composite element (11) only in the forefoot region of said sole element (10); The method according to any one of

[23] to

[29] , further comprising:

[31] The method according to any one of

[23] to

[30] , wherein the polymer element comprises polyamide.

[32] The step of over-injecting the polymer element (12) A method according to any one of

[23] to

[0031] , comprising a step of at least partially covering the surface of the composite element (11) facing the ground.

[33] The step of over-injecting is carried out by forming a substantially flat surface of the sole element (10). A method according to any one of

[23] to

[32] , comprising forming a top surface.

[34] forming a substantially smooth contour of the composite material (11).

[23] ~A method according to any one of

[33] .

[35] A method according to any one of

[23] to

[0034] , further comprising the step of attaching an insole board to the polymer element.

[36] The rear part of the composite element (11) is wider than the front part of the composite element (11).

[23] ~The method according to any one of

[35] .

[37]

[23] further comprising forming a slit (13) in the composite element (11). ~A method according to any one of

[36] .

[38] The slits (13) are arranged substantially along the longitudinal direction of the sole element (10). The method according to any one of

[23] to

[37] ,

[39]

[23] -

[38] A method for producing a sole element (10) A method for producing shoes (30) including tep.

[40] providing an upper; and attaching a heel region of the upper to the shoe by sewing the heel region of the upper.

[39] The shoe (30) according to

[39] , further comprising a step of attaching the shoe (30) to the roller element (10). How to produce.

[0075] In the following, exemplary embodiments of the invention will be described with reference to the drawings. [Brief explanation of the drawings]

[0076] [Figure 1] FIG. 2 is a bottom view of an exemplary sole element according to the present invention. [Figure 2] FIG. 2 is a top view of an exemplary sole element according to the present invention. [Figure 3] FIG. 2 is an exemplary side view of an exemplary sole element according to the present invention. [Figure 4] 1A-1C are two exemplary bottom views of an exemplary sole element according to the present invention. [Figure 5] FIG. 10 illustrates exemplary torque measurements for sole elements with and without composite elements. [Figure 6] FIG. 6 is a schematic representation of an exemplary torque measurement similar to that shown in FIG. 5 to visualize the non-linear bending stiffness of the sole or composite element. [Figure 7] FIG. 10 illustrates anisotropic bending properties of a sole element. DETAILED DESCRIPTION OF THE INVENTION

[0077] Several embodiments of the present invention are described in detail below. These exemplary embodiments include: , can be modified in several ways, and can be combined with each other if they are not contradictory. and that certain features can be omitted if they can be dispensed with. will be understood.

[0078] FIG. 1 is a bottom view of an exemplary sole element 10 according to the present invention. 3 is a side view of an exemplary sole element 10.

[0079] In this specification, the surface of the sole element 10 facing the ground can be considered as the bottom surface, and the surface of the shoe The opposite surface of the sole element 10, which is used to connect to the shoe upper, is referred to as the upper surface. This can be seen in Figure 2.

[0080] The sole element 10 is for an article of footwear and comprises: (a) a composite element having anisotropic bending properties; 11 and (b) a polymer element 12 at least partially covering the composite element 11.

[0081] A composite element 11 with anisotropic bending properties has a bending stiffness in one direction that is greater than the bending stiffness in another direction. In this example, the composite element 11 is a first bending stiffness against bending and a second bending stiffness against downward bending in the toe region of the sole element 10; The second bending stiffness is smaller than the first bending stiffness. Thus, the composite element 11 is more likely to bend upward in the toe area than the sole element 10. Therefore, the sole element 10 is more susceptible to plantar flexion than dorsiflexion. It's easy to do.

[0082] The composite element 11 comprises carbon fibre and is approximately 1.3 mm thick.

[0083] The polymer element 12 may comprise any thermoplastic material suitable for overinjection manufacturing, such as polyamide 12. The polymer element 12 is overinjected to at least partially cover the composite element 11 on the bottom, i.e., ground-facing, surface of the sole element 10, as shown in FIG.

[0084] The exemplary polymer element 12 includes two stud domes 53a for the side over-injected studs, three stud domes 53b for the side threadable studs, two stud domes 54a for the middle over-injected studs, three stud domes 54b for the middle threadable studs, and a central stud dome for supporting the central stud tip.

[0085] The combination of stud dome and stud tip is called a stud. The two stud tips 51a are integrally connected with the two stud domes 53a for the side over-injected studs, thus forming the side over-injected stud 55a. The side threadable stud tips are not shown, but they are threaded into the three stud domes 53b for the side threadable studs, thus forming the side threadable stud 53b. The two middle over-injected stud tips 52a are integrally connected with the three stud domes 54a for the middle over-injected studs, thus forming the middle over-injected stud 56a. The middle threadable stud tips are not shown, but they are threaded into the three stud domes 54b for the middle threadable stud 56b. The middle stud tip 15b is integrally connected with the middle stud dome 15a to form the central stud 16. In an embodiment, the stud tips 51a, 52a, 15b may be inserted into the mold recesses in a first step, and then the stud domes 53a, 53b, 54b, 15a and polymer element 12 are injected onto the stud tips 51a, 52a, 15b.

[0086] This arrangement is best shown in Figure 3. The stud domes are located on the other side of the polymer element 12. part and is therefore made of the same polymer material as the polymer element 12, e.g. The stud tip is made of, for example, thermoplastic polyurethane (TPU). The material may be elastic polyurethane.

[0087] The composite element 11 is arranged only in the forefoot region 19 of the sole element 10. 9 and in front of the sole element 10 which is not identical to the forefoot region 19. The front of the sole element 10 can be closer to the toe area, which is closer to the heel area. It is on the opposite side to the rear part of the sole element 10 which may be closer to the rear.

[0088] The composite element 11 is secured to the stud domes 53a, 53b of the polymer element 12. sole element 15a, 15b, 15c, 15d, 15e, 15f, 15g, 15h, 15i, 15j ... 10. Therefore, the front stud domes 53a, 53b, 54a, 54b or 15a, respectively, studs 55a, 55b, 56a, 56b, and 1 6 does not overlap with the composite element 11. In other words, as shown in FIG. When viewing the sole element 10, the studs 55a, 55b, 56a, 56b, and 16 are It is not placed on the composite element 11.

[0089] Alternatively, the composite element 11 may be configured such that the composite element 11 is secured to the stud tips 51a, 52a, 55b. stud domes 53a, 53b of polymer element 12, but do not substantially overlap any of , 54a, 54b, or 15a is connected to the composite element 11 at its periphery. It is also possible for the sole element 10 to be arranged at the front part thereof so as to slightly overlap with the

[0090] slit13 is disposed substantially along the longitudinal direction of the sole element 10 and extends longitudinally from the front end of the composite element 11 to the rear end of the composite element 11. In this way, for example, the thumb can have different flexibility than the other fingers.

[0091] As shown in Figure 1, slit 13 is disposed in the toe region of the sole element 10 between the first two lateral stud domes 53b and the first two medial stud domes 54b. slit It should be noted that 13 extends to the location of the central stud 16 so that the central stud 16 does not substantially overlap the composite element 11 .

[0092] slit 13 may be located in another area of ​​the composite element 11. However, slit Preferably, the composite element 11 is not located in the midfoot region of the sole element to ensure sufficient support and comfort for the wearer's foot. slit For example, two substantially parallel slit may be used. slit Any other arrangement of is possible.

[0093] moreover, slit 13 can act as an injection gate during manufacturing. In this example, the bottom surface of composite element 11 (i.e., the surface facing the ground as shown in FIG. 1) is covered by polymer element 12 over approximately 50-65% of its surface area. Conversely, the top surface of composite element 11 (as shown in FIG. 2) is essentially not covered by polymer element 12. The top surface of composite element 11 is essentially smooth. In other embodiments, composite element 11 may be completely covered by polymer element 12 over any desired percentage of its surface area.

[0094] As shown in FIG. 1, the polymer element 12 includes two openings 14. The bottom side of the composite element 11 is exposed. The bottom side is the side of the polymer element 12 facing the ground. During production, while the polymer element 12 is being injected onto the composite element 11, The element 11 is fixed in a mold in a resting position, thus forming an opening 14. Alternatively, The polymer element may have more or less than two openings 14 .

[0095] As shown in FIG. 2, on the upper side of the sole element 10, a composite element 11 is provided, which is substantially The polymer element 11 is located in the center of the front of the substrate 11 and is surrounded by the polymer element 11. The sole element 11 has a first periphery for attaching the shoe upper to the sole element 10. The first joining margin firmly joins the sole element 10 to the shoe upper. Therefore, it is preferable that the width of the periphery is 8 to 10 mm.

[0096] The composite element 11 has a substantially smooth outer shape. The composite element 11 does not have any sharp features that are substantially smaller than 2 mm in width, where the width is measured between two parallel, opposing portions of the composite element 11. slit Note that composite element 13 has width w but does not have any sharp features. slit 13 with smooth contours on both sides.

[0097] In another embodiment, the sole element 10 is an insole attached to the polymer element 12. The insole board may further provide additional rigidity to the sole element 10. The excellent bonding properties of polymers such as polyamide allow for the insole board to bonds very well to the polymer element 12.

[0098] The insole board may be arranged as a forefoot insole board. The board and first forefoot region 19 may overlap partially or completely. , it is possible to further adjust the bending stiffness of the sole element.

[0099] The insole board contains polyether block amide or thermoplastic polyurethane. These materials have good bonding properties and durability.

[0100] To advantageously increase the stiffness of the midfoot region 27 without increasing the weight of the sole element 10, The foot element 10 may include a plurality of ribs 17 in the midfoot region 27 of the bottom surface.

[0101] The sole element 10 comprises a lattice structure 18 in the midfoot region 27, whereby the sole element The front and rear of the 10 are now able to twist relative to each other to some degree, while still providing additional rigidity. Furthermore, the weight of the sole element 10 is reduced compared to denser structures.

[0102] The ribs 17 and lattice structure 18 are combined with the use of polyamide material for the polymer material 12. This makes the sole element 10 very light, which on the other hand has adequate stiffness. By adjusting the lattice structure 18 and the stiffness and weight of the sole element 10, It can be adjusted to any desired setting.

[0103] The upper surface of the sole element 10 is essentially flat and essentially smooth, as shown in FIG. , i.e., there are essentially no irregularities.

[0104] The second bonding margin 41 is at least 1 / 4" thick around the opening 14 to ensure good bonding strength. Each of the polymer elements 12 and the composite element 11 is 5 mm long and is formed by overlapping portions. There are.

[0105] FIG. 4 shows two exemplary bottom views of exemplary sole elements 10a, 10b similar to those shown in FIGS. 1-3. Composite element 11a of sole element 10a is longer than composite element 11b of sole element 11b. Sole element 10a does not include any threadable studs. Sole element 10b includes stud domes 53b and 54b for threadable studs, while the corresponding stud domes 53a and 54a of sole element 10a are for over-injected studs. Sole element 10a is configured for use on hard ground, while sole element 10b is intended for use on soft ground.

[0106] FIG. 5 shows exemplary torque measurements for sole elements with and without composite elements. The axis 63 is sawn about the bending axis 59 shown in FIG. 3 by a specific angle indicated by the horizontal axis 64. The torque required to bend the element is shown in Figure 6. Two curves are shown. Curve 61 is the composite 5 shows the torque required to bend the sole element about the bending axis 59 in the absence of the sole element. Curve 62 represents the bending of the sole element about bending axis 59 in the presence of the composite element. The higher the torque required for a given angle, the higher the bending stiffness. Therefore, the bending stiffness is increased by the presence of the composite element.

[0107] Figure 6 shows the nonlinear bending stiffness of the sole or composite element shown in Figure 5. 10. The vertical axis 63 is the bending axis. , for example, around the bending axis 59 shown in FIG. 3 by a particular angle indicated by the transverse axis 64. The torque required to bend the element is shown. For the example shown diagrammatically in Figure 6, the saw was A wedge element was placed under the heel of the shoe. The wedge had an angle of 15°. This is why the horizontal axis 64 starts at 15° instead of 0°. is the angle relative to the horizontal, and 0° is the same as the rear of the sole being horizontal. The saddle is placed under the heel to create a standardized starting point, which is Element 10 is not perfectly horizontal from toe to heel in the unloaded state. In other words, the different sole elements are required for the toe to Since the tip lift is different, it is necessary to standardize the plates using wedge elements. Furthermore, 15° is a more realistic starting point for the outsole's final use. As can be seen in FIG. 6, curve 62 has a nonlinear bending stiffness. In this region, the bending stiffness is smaller than the bending stiffness after 45° in region II. Between 0 and 45 degrees, the sole element or composite element has the first stiffness, and in region II (above 45 degrees), (top) means that it has a second rigidity.

[0108] FIG. 7 shows a schematic representation of the anisotropic bending properties of a sole element or composite element. 3 is a specific bending axis, shown by a transverse axis 64, about a bending axis, such as bending axis 59 shown in FIG. The torque required to bend the sole element by an angle is shown. Two curves are shown. 71 is required to bend the sole element about bending axis 59 relative to negative angle 64b. Curve 72 shows the torque curve for the sole element about bending axis 59 for positive angle 64a. This shows the torque required to bend an element. As you can see, for a given angle, Therefore, the torque required for the negative angle 64b is much higher than for the positive angle 64a. Therefore, the bending properties of the sole element, in this case the bending stiffness, are anisotropic. A negative angle corresponds to a downward bending of the foot, or plantar flexion, and a negative angle corresponds to an upward bending of the foot. Or it can accommodate dorsiflexion. [Explanation of symbols]

[0109] 10 Sole Elements 11 Composite Elements 12 Polymer Elements 13 slit 14 Aperture 15a Central stud dome 15b Center stud tip 16 center stud 17 Ribs 18 Lattice structure 19 Forefoot area 26 Stud dome for center stud 27 Midfoot area 30 Shoes 31 Shoe Upper 41 Second joint 42 Distance from side wall 51a Side over-injected stud tips 52a Medium Over-Injected Stud Tip 53a Stud dome for side over-injected studs 53b Stud dome for side threadable studs 54a Stud dome for intermediate over-injected studs 54b Stud dome for intermediate threadable studs 55a over-injected lateral studs 55b Side threadable stud 56a Medium Over-Injected Studs 56b Intermediate threadable stud 59 Bending axis 61 Torque without composite elements 62 Torque when composite elements are present 63 Vertical Axis 64 Horizontal axis 64a Positive angle 64b Negative angles 71 Torque for Negative Angles 72 Torque for a positive angle

Claims

1. A sole element for a non-slip article of footwear, in particular for a football shoe, comprising: (a) a composite element disposed only in a forefoot region of the sole element, the composite element having anisotropic bending properties; (b) a polymer element at least partially covering the composite element, the polymer element having at least one opening on its ground-facing side exposing at least a portion of the composite element; and the at least one opening is disposed in a forefoot region of the sole element and overlaps the composite element when viewed perpendicular to a ground-facing surface of the sole element; the composite element has a first bending stiffness against upward bending of the sole element in a toe region and a second bending stiffness against downward bending of the sole element in the toe region, the second bending stiffness being less than the first bending stiffness; Sole element.

2. A sole element as described in claim 1, wherein the polymer element has at least one stud dome for supporting a stud tip, and the stud dome and / or the stud tip do not overlap the composite element.

3. A sole element as described in claim 2, wherein the composite element further comprises a slit.

4. A sole element as described in claim 3, wherein the slits are arranged substantially along the longitudinal direction of the sole element.

5. A sole element as described in claim 4, wherein the slits are arranged along the longitudinal direction of the sole element and are provided between a plurality of the stud domes and / or a plurality of the stud tips in the width direction of the sole element.

6. A sole element described in any one of claims 1 to 5, wherein the polymer element comprises polyamide.

7. A sole element as described in any one of claims 1 to 6, wherein the surface of the composite element facing the ground is at least partially covered by the polymer element.

8. A sole element described in any one of claims 1 to 7, wherein the upper surface of the sole element is flat.

9. A sole element described in any one of claims 1 to 8, wherein the composite element has a smooth outer shape.

10. A sole element as described in any one of claims 1 to 9, further comprising an insole board attached to the polymer element.

11. A sole element as described in claim 10, wherein the insole board is a forefoot insole board.

12. A sole element as described in any one of claims 1 to 11, wherein the sole element and / or the composite element has a non-linear bending stiffness.

13. A sole element described in any one of claims 1 to 12, wherein the bending stiffness of the sole element and / or the composite element is smaller in a first bending range than in a second bending range, and the first bending range and the second bending range are ranges of bending angles.

14. A sole element as described in any one of claims 1 to 13, wherein the rear portion of the composite element is wider than the front portion of the composite element.

15. A shoe having a sole element described in any one of claims 1 to 14.

16. The shoe described in claim 15, further comprising an upper, the heel region of which is attached to the sole element by stitching.

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