Sole member for spiked shoe, sole for spiked shoe, and spiked shoe

Abstract

A sole member (5A) for spiked shoes is provided with: a plate section (10) made of a fiber-reinforced resin, the plate section including a reinforcing region that is a region containing reinforcing fibers (13); and a metal seat part (20) on which the spikes (30) can be mounted. The seat part (20) comprises a cylindrical part (21) and a flange part (23), and is embedded in the plate part (10). The plate section (10) includes an overlapping region (A) that overlaps the seat section (20) and a non-overlapping region (B) that does not overlap the seat section (20), and the reinforcing region is located at a position spanning the overlapping region (A) and the non-overlapping region (B). And a reinforcing region which is affixed to the surface of the flange section (23) and the outer peripheral surface of the cylindrical section (21), the average length (L) of the reinforcing fibers (13) contained in the reinforcing region being longer than the protruding length (D) of the flange section (23).

Description

Technical Field

[0001] This disclosure relates to a sole part (hereinafter, sometimes simply referred to as "sole part") for a spike shoe with a cleat that can be freely attached and detached, a sole (hereinafter, sometimes simply referred to as "sole") for a spike shoe, and a spike shoe. Background Technology

[0002] Conventionally, spiked shoes with protrusions on the sole have been known to have either integral, non-replaceable protrusions or replaceable, detachable protrusions attached to the sole. In the latter type of spiked shoe, the protrusion is also called a cleat, and the sole has a seat for holding the cleat.

[0003] Typically, shoe spikes are mostly made of metal, and the seat that holds the spike is also mostly made of metal. On the other hand, shoe soles are usually made of non-metallic materials such as resin or rubber; therefore, the metal seat is usually embedded in the non-metallic sole. For example, Japanese Patent Application Publication No. 2000-166614 (Patent Document 1) discloses a spiked shoe in which the seat is embedded in the sole in this way. It should be noted that, from the viewpoint of facilitating manufacturing and improving fixing strength, it is preferable to embed the seat in the sole using a so-called embedded molding method.

[0004] On the other hand, in recent years, shoes that increase forward propulsion when pushing off the ground by incorporating a high-rigidity plate made of fiber-reinforced resin in the sole, particularly suppressing dorsiflexion during walking, have become increasingly popular. For example, Japanese Patent Publication No. 2018-529461 (Patent Document 2) discloses shoes with such soles.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent document 1: Japanese Patent Application Publication No. 2000-166614.

[0008] Patent Document 2: Japanese Patent Publication No. 2018-529461. Summary of the Invention

[0009] The problem that the invention aims to solve

[0010] Here, assuming that the spikes have a high-rigidity plate made of the aforementioned fiber-reinforced resin, it is considered that the seat is embedded in the high-rigidity plate by insert molding.

[0011] However, fiber-reinforced resins differ from conventional resins used in insert molding, and their molding is not easy. Moreover, from the viewpoint of lightweighting and maximizing functionality, high-rigidity sheets made of fiber-reinforced resin need to be constructed relatively thin, and in contrast, the height of the aforementioned base portion is significantly greater than the thickness of a relatively thin high-rigidity sheet made of fiber-reinforced resin.

[0012] For these reasons, it is very difficult to integrate the base with the high-rigidity fiber-reinforced resin plate through insert molding while meeting the necessary performance requirements such as durability and lightweight. In particular, to improve durability, it is important to ensure sufficient bonding strength between the high-rigidity fiber-reinforced resin plate and the base, and certain improvements are indispensable in this regard.

[0013] Therefore, this disclosure is made in view of the above-mentioned problems, and provides a spiked shoe sole component, spiked shoe sole, and spiked shoe that can sufficiently ensure the bonding strength between the plate and the base while embedding the base of the spike into a plate made of fiber-reinforced resin.

[0014] Methods for solving problems

[0015] The spiked shoe sole component according to this disclosure includes a plate portion and a seat portion. The plate portion has a first main surface and a second main surface located on the side opposite to the first main surface. The seat portion is detachably mounted with spikes, a portion of which is embedded in the plate portion. The seat portion is constructed of a metal member, including a cylindrical portion for receiving and holding the spike, and a flange portion projecting outward from the outer periphery of the cylindrical portion. The plate portion is constructed of a molded article made of fiber-reinforced resin containing at least a reinforcing region, the reinforcing region being a region containing reinforcing fibers within the resin as a base material. The seat portion is embedded in the plate portion with its end exposed outward on the first main surface side, which is the axial direction of the hollow portion's inner space, allowing for spike attachment and removal on the first main surface side. When viewed along a direction parallel to the axial direction of the hollow portion, the plate portion includes an overlapping region that overlaps with the seat portion, and a non-overlapping region that does not overlap with the seat portion. The reinforcing region is located at least across the overlapping region and the non-overlapping region. The reinforced region located in the overlapping area is fixed to the surface of the first main surface of the flange, the surface of the second main surface of the flange, and the outer peripheral surface of the cylindrical portion. The average length of the reinforcing fibers contained in the reinforced region located across the overlapping and non-overlapping areas is longer than the protrusion length of the flange from the cylindrical portion.

[0016] The spiked shoe sole based on this disclosure includes the above-described spiked shoe sole components based on this disclosure.

[0017] The spiked shoe based on this disclosure has the aforementioned spiked shoe sole and an upper disposed above the spiked shoe sole.

[0018] The effects of the invention

[0019] According to this disclosure, a spiked shoe sole component, a spiked shoe sole, and a spiked shoe can be provided that, while embedding the seat portion for mounting the spike onto a plate portion made of fiber-reinforced resin, sufficiently ensures the bonding strength between the plate portion and the seat portion. Attached Figure Description

[0020] Figure 1 This is a side view of the spiked shoe in Embodiment 1, viewed from the outside of the foot.

[0021] Figure 2 yes Figure 1 The image shows a bottom view of the spiked shoe.

[0022] Figure 3 This is a bottom view of the spiked shoe sole component according to Embodiment 1.

[0023] Figure 4 It is along Figure 3 A schematic cross-sectional view of line IV-IV shown.

[0024] Figure 5 This is a schematic diagram illustrating the manufacturing method of the spiked shoe sole component of Embodiment 1.

[0025] Figure 6 This is a schematic diagram illustrating the manufacturing method of the spiked shoe sole component of Embodiment 1.

[0026] Figure 7 These are schematic cross-sectional and bottom views of the main parts of the spiked shoe sole component of Embodiment 2.

[0027] Figure 8 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the first variation.

[0028] Figure 9 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the second variation.

[0029] Figure 10 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the third variation.

[0030] Figure 11 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the fourth variation.

[0031] Figure 12 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the fifth variation.

[0032] Figure 13 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the sixth variation.

[0033] Figure 14 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the 7th variation.

[0034] Figure 15 This is a schematic cross-sectional view of the main part of the sole component for a spiked shoe in the 8th variation.

[0035] Figure 16 This is a bottom view of the spiked shoe in implementation method 3. Detailed Implementation

[0036] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that in the embodiments shown below, the same or common parts are labeled with the same symbols in the drawings and will not be described again.

[0037] <Implementation Method 1>

[0038] Figure 1 This is a side view of the spiked shoe in Embodiment 1, viewed from the outside of the foot. Figure 2 yes Figure 1 The image shows a bottom view of the spiked shoes. Additionally... Figure 3 yes Figure 1 and Figure 2 The image shows a bottom view of the sole component for spiked shoes. Figure 4 It is along Figure 3 A schematic cross-sectional view of line IV-IV shown. First, refer to these... Figures 1 to 4 This section explains the configuration of the spiked shoe 1, the spiked shoe sole 3, and the spiked shoe sole component 5A in this embodiment.

[0039] like Figure 1 and Figure 2 As shown, the spiked shoe 1 comprises an upper 2 and a sole 3. The sole 3 is a component that supports the sole of the wearer's foot and has a generally flat shape. The lower surface of the sole 3 has a contact surface 3a that contacts the ground during use, such as walking and running. The upper 2 is a component that receives and holds the wearer's foot and has a shape that covers almost the entire portion of the inserted wearer's foot that is further to the distal end than the ankle. The upper 2 is located on top of the sole 3. The upper 2 and the sole 3 are joined together, for example, by adhesive bonding.

[0040] The sole 3, viewed from above, runs in the same direction as the length of the wearer's foot, i.e., the front-to-back direction. Figure 1 The left and right directions in the diagram are as follows: Figure 2The diagram (vertical direction) is divided into the forefoot part R1, which supports the toes and foot pedals of the wearer's foot; the middle foot part R2, which supports the arch of the wearer's foot; and the rear foot part R3, which supports the heel of the wearer's foot.

[0041] Here, taking the front end of the sole 3 as a reference, the first boundary position is defined as the position from the front end to 40% of the front-to-back dimension of the sole 3, and the second boundary position is defined as the position from the front end to 70% of the front-to-back dimension of the sole 3. The forefoot R1 corresponds to the portion included between the front end of the sole 3 and the first boundary position in the front-to-back direction, the midfoot R2 corresponds to the portion included between the first boundary position and the second boundary position in the front-to-back direction, and the rearfoot R3 corresponds to the portion included between the second boundary position and the rear end of the sole 3 in the front-to-back direction.

[0042] In addition, such as Figure 2 As shown, in a top view, the sole 3 is divided along the direction consistent with the width of the wearer's foot, i.e., the left-right direction (left-right direction in the figure), into the inner foot side (the part on the S1 side shown in the figure), which is the anatomically oriented center side of the foot (i.e. the side closer to the center), and the outer foot side (the part on the S2 side shown in the figure), which is the side opposite to the anatomically oriented center side (i.e. the side farther from the center).

[0043] Here, the boundary line dividing the sole 3 into the inner and outer parts is called the shoe center SC. When a standard wearer with a foot size suitable for spike 1 wears the shoe, the shoe center SC is the part connecting the wearer's first and second toes to the central part of the heel bone (the so-called heel center). Figure 2 The straight line obtained by projecting the straight line of the heel center (represented by the symbol HC) onto the sole 3 in the vertical direction is as follows. It should be noted that the front and rear ends of the sole 3 are the ends of the sole 3 located on the center SC of the shoe.

[0044] like Figure 1 and Figure 2 As shown, the sole 3 mainly comprises a midsole 4, a sole component 5A, an instep outsole 6A, and an outsole 6B. The midsole 4 defines the upper surface of the sole 3 to which the upper 2 is assembled, and its thickness is relatively thick. The sole component 5A is thinner than the midsole 4 and is assembled to the midsole 4 in a manner that covers a portion of the lower surface of the midsole 4. The instep outsole 6A and the outsole 6B are assembled to the midsole 4 in a manner that covers a predetermined position on the lower surface of the midsole 4.

[0045] More specifically, in the spiked shoe 1 of this embodiment, the portion of the sole component 5A, excluding the rear end, is attached to the lower surface of the midsole 4, and the rear end of the sole component 5A is embedded inside the midsole 4, so that the sole component 5A is exposed to the outside in the forefoot portion R1 and the midfoot portion R2, and not exposed to the outside in the heel portion R3. Additionally, the inner foot outsole 6A and the outer foot outsole 6B are attached to the lower surface of the midsole 4 where the sole component 5A is embedded.

[0046] Therefore, the contact surface 3a of the sole 3 is mainly defined by the sole component 5A in the forefoot R1 and midfoot R2, and mainly by the inner foot outsole 6A and outer foot outsole 6B in the heel R3. It should be noted that for the portion of the lower surface of the sole 3 where the sole component 5A, inner foot outsole 6A, and outer foot outsole 6B are not provided, the contact surface 3a is defined by the lower surface of the exposed portion of the midsole 4.

[0047] Here, the assembly of the sole component 5A to the midsole 4, and the assembly of the inner foot outsole 6A and the outer foot outsole 6B to the midsole 4, can be achieved, for example, by bonding. Furthermore, as a specific method for embedding the rear end of the sole component 5A inside the midsole 4 in the heel area R3, for example, it can be achieved by dividing the midsole 4 into a plurality of components, and by using these plurality of midsole components 4 to hold the rear end of the sole component 5A.

[0048] It should be noted that the sole component 5A does not necessarily need to be partially embedded in the midsole 4; the sole component 5A can also be assembled to the midsole 4 in a manner that almost completely covers the lower surface of the midsole 4. In this case, the aforementioned instep outsole 6A and outstep outsole 6B are not necessary and can be omitted. Furthermore, in this embodiment, the outsole is designed to consist of two components, the instep outsole 6A and the outstep outsole 6B, but it can also consist of a single component or three or more components.

[0049] The midsole 4 is preferably designed to have both appropriate strength and excellent cushioning. From this perspective, the midsole 4 can be made of a resin-based foam material containing a resin material as the main component and a foaming agent or crosslinking agent as a secondary component. Alternatively, a rubber-based foam material containing a rubber material as the main component and plasticizers, foaming agents, reinforcing agents, and crosslinking agents as secondary components can also be used.

[0050] As the aforementioned resin material, ethylene-vinyl acetate copolymer (EVA), polyolefin resin, thermoplastic polyurethane, thermoplastic polyamide elastomer (TPA, TPAE), or thermoplastic polyester elastomer can be used, for example. As the aforementioned rubber material, butadiene rubber can be preferably used, for example.

[0051] Therefore, the midsole 4 is mainly composed of soft components with a low modulus of elasticity. As a result, the midsole 4 can easily deform elastically when subjected to compressive loads, thus providing excellent cushioning.

[0052] On the other hand, as described later, the sole component 5A is a composite component consisting of a plate portion 10 and a plurality of seat portions 20, and is made of a material with higher rigidity than the material constituting the midsole 4. The plate portion 10, which forms the base of the sole component 5A, is made of fiber-reinforced resin. Here, examples of reinforcing fibers include carbon fiber, glass fiber, cellulose fiber (including cellulose nanofibers), aromatic polyamide fiber, Dyneema fiber, Zylon fiber, boron fiber, etc. On the other hand, the resin used as the base material can be a thermoplastic resin or a thermosetting resin, such as epoxy resin, polyester resin, phenolic resin, polyamide resin, polypropylene resin, polyethylene resin, polyurethane resin, etc.

[0053] Therefore, the sole component 5A is made of a rigid material with a significantly high modulus of elasticity. Consequently, the sole component 5A undergoes elastic deformation under high load during push-off, and the restoring force generated by this elastic deformation acts on the ground as a high-resilience force. Therefore, by incorporating this sole component 5A into the sole 3, the forward propulsion force during push-off can be significantly improved.

[0054] Here, the effect of utilizing the aforementioned rebound force to increase forward propulsion during push-off is mainly achieved by the plate portion 10 in the sole component 5A. That is, the plate portion 10 in the sole component 5A functions as a so-called high-rigidity plate. In contrast, the plurality of seat portions 20, which are combined with the plate portion 10, also enhance the propulsion force during push-off by installing cleats 30 on them, but details of this will be described later.

[0055] It should be noted that the instep outsole 6A and the outsole 6B preferably have excellent wear resistance and grip. From this point of view, the instep outsole 6A and the outsole 6B are made of resin or rubber components with a higher elastic modulus than the midsole 4 and are hard.

[0056] like Figures 1 to 4 As shown, the sole component 5A is generally composed of a plate-shaped structure, including a plate portion 10 and a plurality of seat portions 20. The plate portion 10 forms the base of the sole component 5A, and the plurality of seat portions 20 are respectively for receiving and holding the studs 30. Here, the studs 30 protrude in a pin-like manner from the contact surface 3a of the sole 3, thereby increasing the propulsive force during push-off.

[0057] The plate portion 10 has a first main surface 10a located on the side of the ground surface 3a and a second main surface 10b located on the side opposite to the first main surface 10a (see reference). Figure 4Each of the plurality of seat portions 20 is embedded in the plate portion 10 such that it is exposed on the side of the first main surface 10a therein.

[0058] like Figure 2 and Figure 3 As shown, in the plate portion 10 corresponding to the forefoot portion R1, an opening 11 extending in the front-to-back direction is provided in its center. Thus, in the forefoot portion R1, the plate portion 10 extends in a roughly U-shape from top view along the toe portion, the inner foot side portion, and the outer foot side portion. Furthermore, in the midfoot portion R2 and the rearfoot portion R3, the plate portion 10 is positioned across the inner foot side portion and the outer foot side portion.

[0059] The plurality of seat portions 20 comprises a total of four seat portions, specifically including: seat portion 20A located near the front end of the front leg portion R1 and on the inner leg side; seat portion 20B located near the rear end of the front leg portion R1 and on the inner leg side; seat portion 20C located near the front end of the front leg portion R1 and on the outer leg side; and seat portion 20D located near the rear end of the front leg portion R1 and on the outer leg side. All four seat portions 20A to 20D have the same shape.

[0060] Here, the sole component 5A is a so-called embedded molded article, which is a composite component formed by integrally integrating the plate portion 10 and a plurality of seat portions 20. Specifically, the sole component 5A is manufactured by attaching the plate portion 10 before molding to cover a portion of the surface of each of the plurality of seat portions 20 during the molding of the plate portion 10, and then curing it while molding the plate portion 10 in this state. As a result, a portion of each of the plurality of seat portions 20 is assembled to the plate portion 10 in a state of being embedded in the plate portion 10 as described above, and at the boundaries between these plate portions 10 and the plurality of seat portions 20, the plate portion 10 is fixed to the surface of the seat portion 20.

[0061] like Figure 3 and Figure 4 As shown, each of the plurality of seat portions 20 has a nut shape with an internal thread portion 20a. On the other hand, as Figure 4 As shown, each of the plurality of shoe nails 30 has a pin shape with an external thread portion 30a.

[0062] Therefore, by screwing the external threaded portion 30a of each of the plurality of shoe spikes 30 into the internal threaded portion 20a of each of the plurality of seat portions 20, the plurality of shoe spikes 30 are fixed corresponding to the plurality of seat portions 20, thereby allowing the plurality of shoe spikes 30 to be installed on the sole component 5A. It should be noted that the shoe spikes 30 are installed and removed from the sole component 5A along... Figure 4 The arrow DR is shown in the diagram.

[0063] like Figures 1 to 3As shown, a plurality of protrusions 18 are provided at a predetermined position on the first main surface 10a of the plate portion 10, in the portion where the plurality of seat portions 20 are not provided. These plurality of protrusions 18, like the plurality of shoe spikes 30, protrude from the contact surface 3a of the sole 3, thereby increasing the propulsive force when pushing off the ground.

[0064] like Figure 2 and Figure 3 As shown, a plurality of protrusions 18 are located surrounding the plurality of seats 20. Therefore, a portion of these protrusions 18 are present continuously between adjacent pairs of seats 20 (i.e., between seat 20A and seat 20B, between seat 20A and seat 20C, and between seat 20C and seat 20D).

[0065] Thus, adjacent pairs of seat portions 20 are discontinuously connected by a plurality of protrusions 18 disposed between them. In other words, the plate portion 10 between pairs of seat portions 20 that are spaced apart and located at different positions is provided with a plurality of protrusions 18 serving as ribs that discontinuously connect the pair of seat portions 20. With this configuration, the plurality of protrusions 18, serving as ribs, not only help to increase the propulsive force during push-off, but also enhance the function of the plate portion 10 located between these seat portions 20.

[0066] The following is a special reference. Figure 4 This describes the detailed structure of the portion of the sole component 5A that has the seat 20 and its vicinity. It should be noted that... Figure 4 This is a cross-sectional view of seat 20D and its vicinity, one of the four seat portions 20A to 20D provided on the sole component 5A. However, since these four seat portions 20A to 20D have the same shape as described above, and the structures near these four seat portions 20A to 20D are also substantially the same, they will be described without distinction below.

[0067] like Figure 4 As shown, the seat portion 20 includes a cylindrical portion 21, a bottom portion 22, and a flange portion 23. The cylindrical portion 21 is for receiving and holding the shoe nail 30, and has a hollow portion 24 inside. The inner circumferential surface of the cylindrical portion 21 is provided with the aforementioned internal thread portion 20a. The bottom portion 22 closes the end of the hollow portion 24 on the side of the second main surface 10b in the axial direction (the direction in which the axis AX shown in the figure extends), and has a generally circular plate shape. The flange portion 23 protrudes outward from the outer circumferential surface 21a of the cylindrical portion 21 and has an annular plate shape that surrounds the circumference of the cylindrical portion 21.

[0068] Here, the flange 23 can be located at any position along the axial direction of the cylindrical portion 21, but it is preferably located at the middle position along the axial direction of the cylindrical portion 21, or at the end of the cylindrical portion 21 on the side where the bottom 22 is provided (i.e., the end on the side of the second main surface 10b). It should be noted that in the illustrated sole component 5A, the flange 23 is located at the middle position near the end of the cylindrical portion 21 on the side where the bottom 22 is provided.

[0069] As described above, the seat portion 20 is embedded in the plate portion 10 with the first main surface 10a side exposed. More specifically, the seat portion 20 is embedded in the plate portion 10 with the end of its hollow portion 24 on the first main surface 10a side exposed to the outside. As a result, the hollow portion 24 provided inside the seat portion 20 is exposed to the outside, so the shoe spike 30 can be inserted into the hollow portion 24, thereby allowing the shoe spike 30 to be attached and detached on the first main surface 10a side.

[0070] The seat portion 20 is constructed of a metal component, such as aluminum, iron, titanium, or their alloys. There are no particular limitations on the size of the seat portion 20, but its inner diameter is preferably, for example, 5.0 mm or more and 19.0 mm or less, and its height (axial length) is preferably, for example, 4.6 mm or more and 6.0 mm or less. Furthermore, the thickness of the flange portion 23 is preferably, for example, 0.5 mm or more and 1.5 mm or less, and its protrusion length D from the outer peripheral surface 21a of the cylindrical portion 21 is preferably, for example, 1.0 mm or more and 12.0 mm or less.

[0071] On the other hand, the board portion 10 is made of fiber-reinforced resin as described above. Here, the board portion 10 includes a reinforcing region containing reinforcing fibers 13 within the resin 12, which serves as the base material. The reinforcing region may be provided throughout the entire board portion 10 or only in a portion thereof. However, the reinforcing region must be provided at least in the portion of the board portion 10 that spans the overlapping region A and the non-overlapping region B, as will be described in detail later.

[0072] When viewed along a direction parallel to the axial direction of the hollow portion 24 of the seat portion 20, the plate portion 10 includes an overlapping region A that overlaps with the seat portion 20, and a non-overlapping region B that does not overlap with the seat portion 20. Here, the overlapping region A includes not only the portion that overlaps with the cylindrical portion 21 and the bottom portion 22 of the seat portion 20, but also the portion that overlaps with the flange portion 23.

[0073] The plate portion 10 is positioned to surround the seat portion 20 in such a manner that its thickness direction is parallel to the height direction of the seat portion 20. More specifically, the plate portion 10 covers the surface of the flange portion 23 on the first main surface 10a side, namely the first main surface side surface 23a, the surface of the flange portion 23 on the second main surface 10b side, namely the second main surface side surface 23b, and the outer peripheral surface 21a of the cylindrical portion 21, and also covers the surface 22a of the bottom 22 on the second main surface 10b side.

[0074] Here, since the sole component 5A is constructed as an embedded molded part as described above, the plate portion 10 is fixed to the surface of the seat portion 20 at the boundary between the plate portion 10 and the seat portion 20. More specifically, the plate portion 10 is fixed to the first main surface side surface 23a and the second main surface side surface 23b of the flange portion 23 and the outer peripheral surface 21a of the cylindrical portion 21, and is also fixed to the surface 22a of the second main surface 10b side of the bottom 22.

[0075] With this configuration, all parts of the outer surface of the seat portion 20, except for the axial end face 21b on the side of the first main face 10a, are covered by the plate portion 10 and are in a state of engagement with the plate portion 10. Therefore, the engagement strength between these plate portions 10 and the seat portion 20 can be improved.

[0076] Furthermore, since the flange portion 23, which is configured to protrude from the outer peripheral surface 21a of the cylindrical portion 21, is covered by the plate portion 10, not only is the joint strength between the plate portion 10 and the seat portion 20 improved by increasing the joint area, but the flange portion 23 is also present in a manner that it is bitten into the plate portion 10, thereby improving the joint strength between the plate portion 10 and the seat portion 20.

[0077] Furthermore, the plate portion 10 includes a thick-walled portion 14 located further outward and closer to the cylindrical portion 21, and a thin-walled portion 15 located further outward than the thick-walled portion 14. The thick-walled portion 14 comprises a portion of the plate portion 10 that is fixed to each of the first main surface side surface 23a and the second main surface side surface 23b of the flange portion 23 and the outer peripheral surface 21a of the cylindrical portion 21.

[0078] The portion of the first main surface 10a that constitutes the thick-walled portion 14 adjacent to the cylindrical portion 21 is continuous with the axial end face 21b of the cylindrical portion 21 exposed to the outside on the side of the first main surface 10a. With this configuration, the thickness of the plate portion 10 adjacent to the seat portion 20 can be made sufficiently thick, thereby improving the bonding strength between the plate portion 10 and the seat portion 20.

[0079] Furthermore, the first main surface 10a constituting the thick-walled portion 14 includes a first curved surface 16 that, as it moves away from the cylindrical portion 21, faces towards the second main surface 10b and smoothly connects to the first main surface 10a constituting the thin-walled portion 15. Moreover, the second main surface 10b constituting the thick-walled portion 14 includes a second curved surface 17 that, as it moves away from the cylindrical portion 21, faces towards the first main surface 10a and smoothly connects to the second main surface 10b constituting the thin-walled portion 15.

[0080] Thus, the portion of the plate portion 10 that surrounds the seat portion 20 has a shape that bulges in the thickness direction compared to its surroundings. If configured in this way, while reducing the thickness of the plate portion 10, which is a so-called high-rigidity plate, it is possible to ensure a large bonding area between the plate portion 10 and the seat portion 20, and improve the bonding strength between these plate portion 10 and seat portion 20.

[0081] Here, the thickness of the plate portion 10 that forms the thick wall portion 14 is not particularly limited, but is preferably 1.5 mm or more and 7.0 mm or less. On the other hand, the thickness of the plate portion 10 that forms the thin wall portion 15 is also not particularly limited, but on the condition that its thickness is less than that of the thick wall portion 14, it is preferably 0.5 mm or more and 2.5 mm or less.

[0082] Here, in the sole member 5A of the present embodiment, the reinforcing region provided in the plate portion 10 and containing the reinforcing fiber 13 in the resin 12 as the base material is located at a position straddling the overlapping region A and the non-overlapping region B. In other words, when viewed in a direction parallel to the axial direction of the hollow portion 24, the reinforcing region extends in a direction orthogonal to the axial direction of the hollow portion 24 so as to include the portion where the front end of the flange portion 23 is located. In the illustrated sole member 5A, the entire plate portion 10 shown in the figure is configured as the reinforcing region.

[0083] For this reinforcing region, as an example, it may be a randomly oriented region where the reinforcing fibers 13 are randomly oriented in the resin 12 as the base material, or a non-randomly oriented region where the reinforcing fibers 13 are regularly oriented in the resin 12 as the base material. As the non-randomly oriented region, for example, it may be a region where the reinforcing fibers 13 are oriented in a single direction, or a region where the reinforcing fibers 13 are oriented in two or three or more plural directions. It should be noted that, in the present embodiment, this reinforcing region is a randomly oriented region.

[0084] The average length L of the reinforcing fibers 13 contained in this randomly oriented region is longer than the protruding length D of the flange portion 23 from the outer peripheral surface 21a (that is, the condition of 1.0 < L / D is satisfied). It should be noted that, in the figure, for the sake of easy understanding, one reinforcing fiber 13 is focused on and its length is represented as L, but the average length L of the reinforcing fibers mentioned here is the average length of the plural reinforcing fibers 13 contained in the randomly oriented region.

[0085] By configuring in this way, structurally, at the boundary portion between the overlapping region A and the non-overlapping region B, which is the most vulnerable portion due to the rigidity difference between the plate portion 10 and the seat portion 20, a large number of reinforcing fibers 13 straddle this boundary portion and exist in the resin 12. Therefore, the strengthening effect of this portion can be ensured, and the fracture strength at the interface surface between the plate portion 10 and the seat portion 20 can be significantly improved.

[0086] It should be noted that in order for a large number of reinforcing fibers 13 to exist in the resin 12 across the above-mentioned boundary portion, the longer the length of the reinforcing fibers 13, the better. The average length L of the above-mentioned reinforcing fibers 13 and the protruding length D of the flange portion 23 from the outer peripheral surface 21a preferably satisfy the condition of 1.08 ≤ L / D, more preferably satisfy the condition of 1.15 ≤ L / D, and further preferably satisfy the condition of 1.30 ≤ L / D.

[0087] In addition, when the axial length of the cylindrical portion 21 of the portion located closer to the first main surface 10a side than the flange portion 23 (that is, the distance from the axial end surface 21b of the cylindrical portion 21 to the connecting portion of the first main surface side surface 23a of the flange portion 23 and the outer peripheral surface 21a of the cylindrical portion 21) is set as H, the average length L of the above-mentioned reinforcing fibers 13, the protruding length D of the flange portion 23, and the above-mentioned axial length H of the cylindrical portion 21 preferably further satisfy the condition of 1 < L / (D + H). In such a configuration, more reinforcing fibers 13 can be located at positions across the above-mentioned boundary portion, and the breaking strength at the boundary surface between the plate portion 10 and the seat portion 20 can be further ensured to be improved.

[0088] Here, the thickness of the randomly oriented region covering the first main surface side surface 23a of the flange portion 23 and the thickness of the randomly oriented region covering the second main surface side surface 23b of the flange portion 23 are each preferably 0.5 mm or more. By such a configuration, considering that the volume fraction of the reinforcing fibers in a general fiber reinforced resin is 20% or more and 60% or less, the number of reinforcing fibers 13 located at positions across the above-mentioned boundary portion can be ensured to be a quite large number. Therefore, the bonding strength between the plate portion 10 and the seat portion 20 can be more reliably improved.

[0089] As described above, by manufacturing the sole member 5A for a track shoe of the present embodiment, the track shoe sole 3 including this sole member, and the track shoe 1 including this sole, it is possible to provide a seat portion 20 for mounting the shoe nail 30 in the fiber reinforced resin plate portion 10 by insert molding, while fully ensuring the bonding strength between the plate portion 10 and the seat portion 20.

[0090] Figure 5 and Figure 6 are schematic views for explaining the manufacturing method of the sole member for a track shoe of the present embodiment. Hereinafter, referring to these Figure 5 and Figure 6 the manufacturing method of the sole member 5A for a track shoe of the present embodiment will be described.

[0091] As described above, the sole member 5A of the present embodiment includes a plate portion 10 made of a fiber reinforced resin, and this plate portion 10 includes a randomly oriented region in a portion crossing the overlapping region A and the non-overlapping region B. The sole member 5A having such a configuration can be manufactured, for example, through the following manufacturing process.

[0092] First, such as Figure 5 As shown, a resin part 10A is prepared as the raw material for the board portion 10. This resin part 10A contains a plurality of reinforcing fibers 13 within the resin 12, which serves as the base material, and these reinforcing fibers 13 are oriented and extend in a single direction. The resin part 10A is manufactured by cutting larger resin sheets containing longer reinforcing fibers into predetermined sizes, and only the number of these resin parts 10A required for manufacturing the board portion 10 is prepared.

[0093] Next, as Figure 6 As shown, a plurality of prepared resin parts 10A are aligned along their thickness directions and overlapped in a random manner in directions intersecting the thickness directions to prepare an assembly of resin parts 10A. This assembly is then cut to manufacture a resin plate 10B of a predetermined shape. For simplicity, the resin plate 10B is illustrated as having a generally rectangular planar shape, but in practice, a resin plate 10B with a shape corresponding to the shape of the plate portion 10 to be manufactured is prepared.

[0094] Next, the resin plate 10B is placed into a mold pre-set with a plurality of seat portions 20, and then pressed using the mold. Thus, the plate portion 10 containing the randomly oriented region is formed, and the plurality of seat portions 20 are integrated with the plate portion 10. In the manufactured sole component 5A, the randomly oriented region is located in the portion that spans the overlapping region A and the non-overlapping region B.

[0095] It should be noted that, after the above manufacturing process, the plate portion 10 of the sole component 5A is configured as a randomly oriented region. However, when manufacturing the resin plate 10B, by replacing the designated region therein with a resin component different from the assembly of the resin components 10A (e.g., a resin component without reinforcing fibers, or a resin component containing a plurality of woven reinforcing fibers), or by replacing it with a larger resin component, for example, containing a plurality of regularly oriented reinforcing fibers, it is possible to manufacture a sole component with a randomly oriented region only in a portion of the plate portion 10. However, even in this case, in order to obtain sufficient bonding strength between the plate portion 10 and the seat portion 20, it is necessary to configure the portion spanning the overlapping region A and the non-overlapping region B as a randomly oriented region.

[0096] Furthermore, the aforementioned spiked shoe sole component 5A is manufactured by compression molding, but it can also be manufactured by autoclave molding.

[0097] Here, the manufacturing method of the above-mentioned spiked shoe sole component 5A shows an example of a case where the randomly oriented region, which is a reinforcement region, is formed to span the overlapping region A and the non-overlapping region B, but the reinforcement region can also be a non-randomly oriented region as described above.

[0098] In this case, as an example of a manufacturing method for a spiked shoe sole component, a reinforcing fiber resin board with reinforcing fibers oriented in one or more directions is prepared in advance. A hole is made in the portion of the reinforcing fiber resin board where a seat is embedded, and the seat is inserted into this portion. The reinforcing fiber resin board is then press-molded or autoclaved in this state. If, in the reinforcing fiber resin board, the portion that forms the boundary between overlapping region A and non-overlapping region B after molding, is where the reinforcing fibers oriented in one or more directions are arranged, then the non-randomly oriented region is formed in a manner that spans both overlapping region A and non-overlapping region B.

[0099] <Implementation Method 2>

[0100] Figure 7 (A) is a schematic cross-sectional view of the main part of the spiked shoe sole component according to Embodiment 2. Figure 7 The middle (B) view is a bottom view of this main section. The following refers to these... Figure 7 (A) and Figure 7 Section (B) describes the spiked shoe sole component 5B of this embodiment. It should be noted that the spiked shoe sole 3 and the spiked shoe 1 are equipped with the spiked shoe sole component 5B of this embodiment instead of the spiked shoe sole component 5A of Embodiment 1 described above.

[0101] like Figure 7 As shown in (A), the sole component 5B of this embodiment differs from the sole component 5A of Embodiment 1 only in the shape of the plate portion 10.

[0102] Specifically, in the sole component 5B, the first main surface 10a of the portion constituting the thick-walled portion 14 of the plate portion 10 slopes significantly toward the second main surface 10b as it moves away from the cylindrical portion 21. Consequently, the thickness of the thick-walled portion 14 is significantly reduced closer to the cylindrical portion 21 compared to the thickness of the thick-walled portion 14 in the sole component 5A of Embodiment 1. Consequently, the thickness of the thin-walled portion 15 is also thinner than the thickness of the thin-walled portion 15 in the spiked sole component 5A of Embodiment 1.

[0103] Even with this configuration, effects comparable to those described in Embodiment 1 can be achieved. The seat 20 for mounting the shoe nail 30 can be provided in the fiber-reinforced resin plate portion 10 by embedding and molding, while ensuring sufficient bonding strength between the plate portion 10 and the seat portion 20. Moreover, the thickness of the thick-walled portion 14 and the thin-walled portion 15 is thin, which correspondingly enables a lighter weight than the sole component 5A of Embodiment 1.

[0104] In addition, such as Figure 7 As shown in (B), in the sole component 5B of this embodiment, the first curved surface 16 included in the first main surface 10a constituting the thick-walled portion 14, and the second curved surface 17 included in the second main surface 10b constituting the thick-walled portion 14, are both configured such that their curvature changes as they move away from the cylindrical portion 21. Furthermore, the position with the greatest curvature connecting the first curved surface 16, i.e., the first maximum curvature position 16a (see reference 16a), is... Figure 7 The first imaginary line 16b in (A) and the position of maximum curvature of the second curved surface 17, i.e., the second maximum curvature position 17a (refer to) Figure 7 The second imaginary line 17b in (A) is configured not to overlap when viewed in a direction parallel to the axis of the hollow part 24 (i.e., the direction in which the axis AX shown in the figure extends).

[0105] With this configuration, the first maximum curvature position 16a and the second maximum curvature position 17a, which might be more vulnerable than their surroundings, are prevented from being positioned too close together. Therefore, damage to the thick-walled portion 14 containing these first maximum curvature positions 16a and 17a can be suppressed. Consequently, the overall strength of the sole component 5B is improved, resulting in excellent durability.

[0106] <First Variation>

[0107] Figure 8 This is a schematic cross-sectional view of the main parts of the spiked shoe sole component based on the first modification of Embodiment 2 described above. Hereinafter, reference will be made to this... Figure 8 This describes the sole component 5B1 for spiked shoes in the first modified example.

[0108] like Figure 8 As shown, the shape of the flange portion 23 of the sole component 5B1 in the first modified example is different from that of the sole component 5B in Embodiment 2.

[0109] Specifically, the flange portion 23 extends outward from the outer periphery of the cylindrical portion in a manner that intersects with an imaginary plane orthogonal to the axis of the hollow portion 24. More specifically, the flange portion 23 extends and bends toward the first main surface 10a as it moves away from the cylindrical portion 21.

[0110] With this configuration, not only can an effect comparable to that described in Embodiment 2 be obtained, but since the curved flange portion 23 is covered by the plate portion 10, a so-called anchoring effect can be obtained, thereby further improving the bonding strength between the plate portion 10 and the seat portion 20.

[0111] <Second Variation>

[0112] Figure 9 This is a schematic cross-sectional view of the main parts of the spiked shoe sole component, based on the second modification of Embodiment 2 described above. Hereinafter, referring to this... Figure 9 This describes the sole component 5B2 for spiked shoes in the second modified example.

[0113] like Figure 9 As shown, the shape of the flange portion 23 of the sole component 5B2 in the second modified example is different from that of the sole component 5B in Embodiment 2.

[0114] Specifically, the flange portion 23 extends outward from the outer periphery of the cylindrical portion in a manner that intersects with an imaginary plane orthogonal to the axis of the hollow portion 24. More specifically, the flange portion 23 extends in a wedge shape toward the first main surface 10a as it moves away from the cylindrical portion 21.

[0115] With this configuration, not only can an effect comparable to that described in Embodiment 2 be obtained, but also an anchoring effect can be obtained since the wedge-shaped inclined flange 23 is covered by the plate portion 10, thereby further improving the bonding strength between the plate portion 10 and the seat portion 20.

[0116] <3rd Variation>

[0117] Figure 10 This is a schematic cross-sectional view of the main part of the spiked shoe sole component according to the third variation of Embodiment 2 described above. Hereinafter, referring to this... Figure 10 This describes the sole component 5B3 for spiked shoes in the third modified example.

[0118] like Figure 10 As shown, the sole component 5B3 of the third modification differs from the sole component 5B2 of the second modification only in the range of the randomly oriented region provided in the plate portion 10.

[0119] Specifically, in the sole component 5B3, the portion of the surface 22a covering the bottom 22 of the seat portion 20 on the side of the second main surface 10b does not contain reinforcing fibers 13.

[0120] With this configuration, effects comparable to those described in Embodiment 2 and the second variation can be obtained.

[0121] <4th Variation>

[0122] Figure 11 This is a schematic cross-sectional view of the main part of the spiked shoe sole component according to the fourth variation of Embodiment 2 described above. Hereinafter, referring to this... Figure 11 This describes the sole component 5B4 for spiked shoes in the fourth variation.

[0123] like Figure 11 As shown, the sole component 5B4 of the fourth modification differs from the sole component 5B2 of the second modification only in the range of the randomly oriented region provided in the plate portion 10.

[0124] Specifically, in the sole component 5B4, the portion of the second main surface side surface 23b of the flange portion 23 covering the seat portion 20 in the plate portion 10 does not contain reinforcing fibers 13.

[0125] With this configuration, effects comparable to those described in Embodiment 2 and the second variation can be obtained.

[0126] <5th Variation>

[0127] Figure 12 This is a schematic cross-sectional view of the main part of the spiked shoe sole component according to the fifth modification of Embodiment 2 described above. Hereinafter, referring to this... Figure 12 This describes the sole component 5B5 for spiked shoes in the fifth modified example.

[0128] like Figure 12 As shown, the sole component 5B5 of the fifth modification differs from the sole component 5B2 of the second modification only in the range of the randomly oriented region provided in the plate portion 10.

[0129] Specifically, in the sole component 5B5, the portion of the first main surface side surface 23a of the flange portion 23 covering the seat portion 20 in the plate portion 10 does not contain reinforcing fibers 13.

[0130] With this configuration, effects comparable to those described in Embodiment 2 and the second variation can be obtained.

[0131] <Sixth Variation>

[0132] Figure 13 This is a schematic cross-sectional view of the main part of the spiked shoe sole component according to the sixth variation of Embodiment 2 described above. Hereinafter, referring to this... Figure 13 This describes the sole component 5B6 for spiked shoes in the sixth variation.

[0133] like Figure 13 As shown, the shape of the plate portion 10 of the sole component 5B6 in the sixth modification is different from that of the sole component 5B2 in the second modification.

[0134] Specifically, in the sole component 5B6, the plate portion 10 does not cover the surface 22a on the second main surface 10b side of the bottom 22 of the seat portion 20, which is exposed to the outside.

[0135] With this configuration, the same effect as that described in Embodiment 2 and the second variation can be obtained, and the position of the plate portion 10 is reduced, thereby enabling the lightweighting of the sole component 5B6.

[0136] <7th Variation>

[0137] Figure 14 This is a schematic cross-sectional view of the main part of the spiked shoe sole component according to the seventh variation of Embodiment 2 described above. Hereinafter, referring to this... Figure 14 This describes the sole component 5B7 for spiked shoes in the seventh variation.

[0138] like Figure 14 As shown, the shape of the seat portion 20 of the sole component 5B7 in the seventh modification is different from that of the sole component 5B2 in the second modification.

[0139] Specifically, in the sole component 5B7, the seat portion 20 does not have a bottom 22, the end of the seat portion 20 on the axial second main surface 10b side of the hollow portion 24 is open, and the open end of the seat portion 20 on the second main surface 10b side is covered by the plate portion 10.

[0140] With this configuration, the same effect as that described in Embodiment 2 and the second variation can be obtained, and since the seat 20 does not have a bottom 22, the sole component 5B7 can be made lighter.

[0141] <8th Variation>

[0142] Figure 15 This is a schematic cross-sectional view of the main part of the spiked shoe sole component based on the eighth variation of Embodiment 2 described above. Hereinafter, referring to this... Figure 15 This describes the sole component 5B8 for spiked shoes in the 8th variation.

[0143] like Figure 15 As shown, the shape of the plate portion 10 and the shape of the seat portion 20 are different in the shoe sole component 5B8 of the eighth modification compared with the shoe sole component 5B2 of the second modification.

[0144] Specifically, in the sole component 5B8, the seat portion 20 does not have a bottom 22, the end of the seat portion 20 is open on the side of the second main surface 10b in the axial direction of the hollow portion 24, and the plate portion 10 does not cover the open end of the seat portion 20 on the side of the second main surface 10b.

[0145] With this configuration, the same effect as that described in Embodiment 2 and the second variation can be obtained. Furthermore, the seat 20 does not have a bottom 22, and the position of the plate 10 is reduced, thereby enabling the shoe sole component 5B8 to be lightweight.

[0146] <Implementation Method 3>

[0147] Figure 16 This is a bottom view of the spiked shoe according to Embodiment 3. Hereinafter, refer to this... Figure 16 This section describes the spiked shoe sole component 5C of this embodiment. It should be noted that the spiked shoe sole 3 and the spiked shoe 1 include the spiked shoe sole component 5C of this embodiment, replacing the spiked shoe sole component 5A of Embodiment 1 described above.

[0148] like Figure 16 As shown, the sole component 5C of this embodiment differs from the sole component 5A of Embodiment 1 only in the shape of the plate portion 10.

[0149] Specifically, in the sole component 5C, the plurality of protrusions 18 present in the sole component 5A of Embodiment 1 (see reference) are not provided. Figures 1 to 3 Instead, a plurality of protruding portions 19 are provided on the first main surface 10a of the plate portion 10. The plurality of protruding portions 19 are provided between adjacent pairs of seats 20 (i.e., between seat 20A and seat 20B, and between seat 20C and seat 20D), continuously connecting these adjacent pairs of seats. That is, these plurality of protruding portions 19 are equivalent to ribs continuously connecting adjacent pairs of seats 20, serving to strengthen the portion of the plate portion 10 located between these seats 20.

[0150] With this configuration, effects comparable to those described in Embodiment 1 can be achieved. The seat 20 for mounting the shoe nail 30 can be provided in the fiber-reinforced resin plate 10 by embedding and molding, while ensuring sufficient bonding strength between the plate 10 and the seat 20.

[0151] Key points of the disclosure in the implementation methods, etc.

[0152] The features disclosed in the above embodiments and their variations are summarized as follows.

[0153] [Postscript 1]

[0154] A spiked shoe sole component includes: a plate having a first main surface and a second main surface located on a side opposite to the first main surface; and a seat for detachably mounting spikes, a portion of which is embedded in the plate. The above-mentioned seat portion is composed of a metal member, which includes a cylindrical portion for receiving and holding a stud, and a flange portion protruding outward from the outer peripheral surface of the cylindrical portion. The above-mentioned plate portion is composed of a molded product made of fiber-reinforced resin containing at least a reinforced region, and the reinforced region is a region in which reinforcing fibers are contained in the resin as a base material. The above-mentioned seat portion is buried in the above-mentioned plate portion in a state where the end portion on the above-mentioned first main surface side in the axial direction of the hollow portion, which is the inner space of the above-mentioned cylindrical portion, is exposed to the outside, so that the stud can be loaded and unloaded on the above-mentioned first main surface side. When viewed in a direction parallel to the axial direction of the hollow portion, the above-mentioned plate portion includes an overlapping region as a region overlapping with the above-mentioned seat portion and a non-overlapping region as a region not overlapping with the above-mentioned seat portion. The above-mentioned reinforced region is at least located at a position straddling the above-mentioned overlapping region and the above-mentioned non-overlapping region. The part of the above-mentioned reinforced region located in the above-mentioned overlapping region is fixed to the surface on the above-mentioned first main surface side of the above-mentioned flange portion, the surface on the above-mentioned second main surface side of the above-mentioned flange portion, and the outer peripheral surface of the above-mentioned cylindrical portion. In the part of the above-mentioned reinforced region located at a position straddling the above-mentioned overlapping region and the above-mentioned non-overlapping region, the average length of the reinforcing fibers contained therein is longer than the protruding length of the above-mentioned flange portion from the above-mentioned cylindrical portion.

[0155] [Supplementary Note 2]

[0156] For the studded sole member according to Supplementary Note 1, wherein when the average length of the reinforcing fibers contained in the part of the above-mentioned reinforced region located at a position straddling the above-mentioned overlapping region and the above-mentioned non-overlapping region is set as L, and the protruding length of the above-mentioned flange portion from the above-mentioned cylindrical portion is set as D, the condition of 1.08 ≤ L / D is further satisfied.

[0157] [Supplementary Note 3]

[0158] For the studded sole member according to Supplementary Note 1 or 2, wherein when the average length of the reinforcing fibers contained in the part of the above-mentioned reinforced region located at a position straddling the above-mentioned overlapping region and the above-mentioned non-overlapping region is set as L, the protruding length of the above-mentioned flange portion from the above-mentioned cylindrical portion is set as D, and the distance between the portion of the surface on the above-mentioned first main surface side of the above-mentioned flange portion connected to the above-mentioned cylindrical portion and the axial end surface on the above-mentioned first main surface side of the above-mentioned cylindrical portion is set as H, the condition of 1 < L / (D + H) is further satisfied.

[0159] [Supplementary Note 4]

[0160] For the studded sole member according to any one of Supplementary Notes 1 to 3, wherein the above-mentioned reinforced region is composed of a randomly oriented region in which the reinforcing fibers are randomly oriented in the resin as a base material.

[0161] [Postscript 5]

[0162] According to any one of Appendices 1 to 4, the thickness of the reinforced region of the portion covering the first main surface side of the flange is 0.5 mm or more, and the thickness of the reinforced region of the portion covering the second main surface side of the flange is 0.5 mm or more.

[0163] [Postscript 6]

[0164] According to any one of Appendices 1 to 5, the spiked shoe sole component, wherein the flange extends outward from the outer periphery of the tubular portion in such a manner as to intersect with an imaginary plane orthogonal to the axial direction of the hollow portion.

[0165] [Postscript 7]

[0166] According to Appendix 6, the sole component for spiked shoes, wherein the flange extends toward the first main surface side as it moves away from the tubular portion.

[0167] [Postscript 8]

[0168] According to any one of Appendices 1 to 7, the sole component for spiked shoes, wherein the flange portion has an annular plate shape that surrounds the circumference of the cylindrical portion.

[0169] [Postscript 9]

[0170] According to any one of Appendices 1 to 8, the axial end face of the first main surface side of the cylindrical portion is exposed to the outside, and the first main surface of the portion adjacent to the cylindrical portion is continuous with the axial end face.

[0171] [Postscript 10]

[0172] According to any one of Appendices 1 to 9, the sole component for spiked shoes further comprises a bottom that closes the axial end of the hollow portion on the second main surface side.

[0173] [Postscript 11]

[0174] According to Appendix 10, the random orientation region of the portion of the overlapping area is fixed to the surface of the second main surface side of the bottom.

[0175] [Postscript 12]

[0176] According to any one of Appendices 1 to 11, the spiked shoe sole component comprises a thick-walled portion located further outward and closer to the cylindrical portion than the cylindrical portion, and a thin-walled portion located further outward than the thick-walled portion. The first main surface constituting the thick-walled portion includes a first curved surface that, as it moves away from the cylindrical portion toward the second main surface, smoothly connects to the first main surface constituting the thin-walled portion. The second main surface constituting the thick-walled portion includes a second curved surface that moves away from the cylindrical portion toward the first main surface and is gently connected to the second main surface constituting the thin-walled portion.

[0177] [Postscript 13]

[0178] According to Appendix 12, the sole component for spiked shoes is wherein the first curved surface and the second curved surface are each configured such that their curvature changes as they move away from the cylindrical portion. The first imaginary line connecting the position of maximum curvature of the first curved surface and the second imaginary line connecting the position of maximum curvature of the second curved surface do not overlap when viewed along a direction parallel to the axial direction of the hollow portion.

[0179] [Postscript 14]

[0180] According to any one of Appendices 1 to 13, the spiked shoe sole component comprises a first seat and a second seat that are spaced apart from each other and disposed at different positions on the plate. The plate portion located between the first seat portion and the second seat portion is provided with ribs that connect the first seat portion and the second seat portion continuously or intermittently.

[0181] [Postscript 15]

[0182] According to Appendix 14, the sole component for spiked shoes has the aforementioned ribs located on the aforementioned first main surface.

[0183] [Postscript 16]

[0184] According to any one of Appendices 1 to 15, the shoe sole component for spiked shoes, wherein the reinforcing fibers contained in the randomly oriented region located across the overlapping region and the non-overlapping region are carbon fibers.

[0185] [Postscript 17]

[0186] A spiked shoe sole, wherein it comprises any one of the spiked shoe sole components described in Appendix 1 to 16.

[0187] [Postscript 18]

[0188] A type of spiked shoe, which possesses: The above-mentioned spiked shoe soles described in Appendix 17; and The upper is located above the sole of the aforementioned spiked shoe.

[0189] [Postscript 19]

[0190] According to Appendix 18, the spiked shoe has spikes installed on the aforementioned seat.

[0191] <Other methods, etc.>

[0192] In the above embodiments and their variations, the case in which the flange portion provided on the seat portion is configured to have a shape that surrounds the circumference of the cylindrical portion has been described. However, the flange portion does not necessarily have to be configured to surround the cylindrical portion; it can also be configured to be in a dotted pattern to be discontinuous along the circumference of the cylindrical portion.

[0193] Furthermore, in the above embodiments and their variations, examples have been given of flange portions provided on the seat portion that are upright from the cylindrical portion or that extend toward the first main surface as they move away from the cylindrical portion. However, the flange portion may also be configured to extend toward the second main surface as it moves away from the cylindrical portion.

[0194] Furthermore, in the above embodiments and their variations, the case in which a pair of adjacent seats are continuously or intermittently connected on the first main surface of the plate is described, but such ribs are not necessary and may not be provided.

[0195] Furthermore, in the above embodiments and their variations, the case in which the thickness of the sole component is made thinner than the thickness of the midsole has been described. However, the thickness of the sole component may also be made the same as the thickness of the midsole, or the thickness of the sole component may be made thicker than the thickness of the midsole.

[0196] Furthermore, in the above embodiments and their variations, the case in which all the seat portions included in the sole component are constructed to have the same shape has been described. However, it is not necessary for all the seat portions included in the sole component to have the same shape, and it is also possible for one of them to have a different shape from the other portions.

[0197] Furthermore, the various configurations disclosed in the above embodiments and their variations can be appropriately modified as long as the spirit of this disclosure is not violated. For example, the number of seats provided on the sole component of the spiked shoe is not limited to four; there may be more or fewer. In addition, regarding the mounting of spikes on the seats, the case of mounting by screwing has been described as an example, but spikes may also be mounted on the seats by other mounting methods.

[0198] Furthermore, without departing from the spirit of this disclosure, the characteristic configurations disclosed in the above embodiments and their variations can be combined with each other.

[0199] Therefore, the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the invention is defined by the claimed scope and includes the meaning equivalent to the description in the claimed scope, as well as all modifications within that scope.

[0200] Explanation of reference numerals in the attached figures

[0201] 1: Spiked shoe; 2: Upper; 3: Spiked shoe sole; 3a: Ground contact area; 4: Midsole; 5A-5C, 5B1-5B8: Spiked shoe sole components; 6A: Inner foot outsole; 6B: Outer foot outsole; 10: Plate; 10A: Resin component; 10B: Resin plate; 10a: First main surface; 10b: Second main surface; 11: Opening; 12: Resin; 13: Reinforcing fiber; 14: Thick-walled portion; 15: Thin-walled portion; 16: First curved surface; 16a: First maximum curvature position; 16b: First imaginary line; 17: Second curved surface; 17a: Second maximum curvature position Large curvature position; 17b: Second imaginary line; 18: Protrusion; 19: Convex part; 20, 20A~20D: Seat part; 20a: Internal thread part; 21: Cylindrical part; 21a: Outer peripheral surface; 21b: Axial end face; 22: Bottom; 22a: Surface; 23: Flange part; 23a: First main surface side surface; 23b: Second main surface side surface; 24: Hollow part; 30: Shoe nail; 30a: External thread part; A: Overlapping area; B: Non-overlapping area; HC: Heel center; R1: Forefoot part; R2: Midfoot part; R3: Rearfoot part; SC: Shoe center.

Claims

1. A sole member for spiked shoes, comprising: a plate portion having a first main surface and a second main surface on the side opposite to the first main surface; and a seat portion in which a shoe spike is freely attachable and detachable, a part of the seat portion being embedded in the plate portion, wherein the seat portion is composed of a member made of metal, the member including a cylindrical portion for receiving and holding the shoe spike, and a flange portion protruding outward from the outer peripheral surface of the cylindrical portion, the plate portion is composed of a molded product made of a fiber-reinforced resin containing at least a reinforcement region, the reinforcement region being a region in which a reinforcing fiber is contained in a resin as a base material, the seat portion is embedded in the plate portion with an end portion of the first main surface side in the axial direction of a hollow portion as an inner space of the cylindrical portion exposed to the outside, so that the shoe spike is attachable and detachable on the first main surface side, the plate portion includes, as a region overlapping the seat portion, an overlapping region, and as a region not overlapping the seat portion, a non-overlapping region, when viewed in a direction parallel to the axial direction of the hollow portion, the reinforcement region is located at least at a position across the overlapping region and the non-overlapping region, the reinforcement region at the part of the overlapping region is fixed to a surface of the first main surface side of the flange portion, a surface of the second main surface side of the flange portion, and an outer peripheral surface of the cylindrical portion, and the average length of the reinforcing fiber contained in the reinforcement region at the part of the position across the overlapping region and the non-overlapping region is longer than the protruding length of the flange portion from the cylindrical portion.

2. The sole member for spiked shoes according to claim 1, wherein when the average length of the reinforcing fiber contained in the reinforcement region at the part of the position across the overlapping region and the non-overlapping region is set as L, and the protruding length of the flange portion from the cylindrical portion is set as D, the condition of 1.08 ≤ L / D is further satisfied.

3. The sole member for spiked shoes according to claim 1, wherein when the average length of the reinforcing fiber contained in the reinforcement region at the part of the position across the overlapping region and the non-overlapping region is set as L, the protruding length of the flange portion from the cylindrical portion is set as D, and the distance between the part of the surface of the first main surface side of the flange portion connected to the cylindrical portion and the axial end surface of the first main surface side of the cylindrical portion is set as H, the condition of 1 < L / (D+H) is further satisfied.

4. The sole member for spiked shoes according to claim 1, wherein the reinforcement region is composed of a random orientation region in which the reinforcing fiber is randomly oriented in the resin as the base material.

5. The sole member for spiked shoes according to claim 1, wherein the thickness of the reinforcement region covering the part of the surface of the first main surface side of the flange portion is 0.5 mm or more, and the thickness of the reinforcement region covering the part of the surface of the second main surface side of the flange portion is 0.5 mm or more.

6. The sole member for spiked shoes according to claim 1, wherein the flange portion extends outward from the outer peripheral surface of the cylindrical portion in such a manner as to intersect with an imaginary plane orthogonal to the axial direction of the hollow portion. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 7. The sole component for spiked shoes according to claim 6, wherein, The flange portion extends toward the first main surface side as it moves away from the cylindrical portion.

8. The sole component for spiked shoes according to claim 1, wherein, The flange portion has an annular plate shape that surrounds the circumference of the cylindrical portion.

9. The sole component for spiked shoes according to claim 1, wherein, The axial end face of the first main surface of the cylindrical portion is exposed to the outside, and the first main surface of the portion adjacent to the cylindrical portion is continuous with the axial end face.

10. The sole component for spiked shoes according to claim 1, wherein, The seat portion also has a bottom that closes the axial end of the hollow portion on the second main surface side.

11. The spiked shoe sole component according to claim 10, wherein, The reinforced region located in the overlapping area is fixed to the surface of the second main surface side of the bottom.

12. The sole component for spiked shoes according to claim 1, wherein, The plate portion includes a thick-walled portion located further outward and closer to the cylindrical portion than the cylindrical portion, and a thin-walled portion located further outward than the thick-walled portion. The first main surface constituting the thick-walled portion includes a first curved surface that, as it moves away from the cylindrical portion, faces toward the second main surface and smoothly connects to the first main surface constituting the thin-walled portion. The second main surface constituting the thick-walled portion includes a second curved surface that moves away from the cylindrical portion toward the first main surface and smoothly connects to the second main surface constituting the thin-walled portion.

13. The spiked shoe sole component according to claim 12, wherein, The first curved surface and the second curved surface are each configured such that their curvature changes as they move away from the cylindrical portion. The first imaginary line connecting the position of maximum curvature of the first curved surface and the second imaginary line connecting the position of maximum curvature of the second curved surface do not overlap when viewed along a direction parallel to the axial direction of the hollow portion.

14. The sole component for spiked shoes according to claim 1, wherein, The seat portion includes a first seat portion and a second seat portion disposed at different positions on the plate portion, spaced apart from each other. The plate portion located between the first seat portion and the second seat portion is provided with ribs that connect the first seat portion and the second seat portion continuously or intermittently.

15. The sole component for spiked shoes according to claim 14, wherein, The rib is located on the first main surface.

16. The sole component for spiked shoes according to claim 1, wherein, The reinforcing fibers contained in the portion of the reinforcing region located across the overlapping and non-overlapping regions are carbon fibers.

17. A sole for spiked shoes, wherein, The spiked shoe sole comprises the spiked shoe sole component as described in any one of claims 1 to 16.

18. A type of spiked shoe, wherein, The spiked shoes have the following features: The sole for spiked shoes as described in claim 17; and The upper is located above the sole of the spiked shoe.

19. The spiked shoe according to claim 18, wherein, The seat is fitted with shoe nails.

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