JP2005296101A - shoes - Google Patents

Abstract

To provide a structure of a reinforcing device that easily fits a heel without significantly reducing the original function of this type of reinforcing device in a shoe provided with a reinforcing device in a heel part.
SOLUTION: The reinforcing device according to the present invention includes inner side surface portions 24s and 25s that cover a part of the inner side surface of the ridge, bottom surface portions 24d and 25d that cover a part of the bottom surface of the heel, and inner sides from the bottom surface portions 24d and 25d. The inner winding upper portions 24u and 25u that wind up to the surface portions 24s and 25s are integrally formed of a non-foamable resin, and the inner winding upper portions 24u and 25u have a curved cross section so that the reinforcing device essentially follows the foot. Are provided on the back side of the heel, and are provided with fastening members 51 and 52 for fitting the reinforcing device to the foot, and the outer side surface of the heel portion of the shoe is closer to the heel portion of the shoe. It is set so that it is less rigid than the inner surface and easy to follow along the foot.
[Selection] Figure 3

Description

  The present invention relates to a shoe provided with a reinforcing device in a heel part.

In spike shoes for land use, a hard plate made of hard resin covers the upper from the bottom, and covers the heel of the foot from the left and right and bottom to prevent hold and improve the arch of the foot (Patent Documents 1 and 2).
Japanese Patent No. 3462807 Special Table 2003-500141 (Summary, FIG. 4)

  However, the shape and dimensions of the heel vary greatly from person to person, so a gap is created between the shoe and the foot, which may result in a loss of force.

  Patent Document 2 discloses that the mold can be easily pulled upward by notching the rear portion of the heel counter portion that covers the heel. However, there is no disclosure about the point that the heel counter portion along the foot is sufficiently improved.

  An object of the present invention is to provide a structure of a reinforcing device that easily fits a heel without significantly reducing the original function of this type of reinforcing device in a shoe provided with a reinforcing device in a heel portion. .

  In order to achieve the above object, the present invention provides a shoe in which a reinforcing device is provided integrally with the upper at the heel portion of the upper that wraps the foot, and the reinforcing device is provided at least inside the heel. An inner side surface portion that covers a part of the side surface, a bottom surface portion that covers at least a portion of the bottom surface of the bag, and an inner winding upper portion that winds up from the bottom surface portion to the inner side surface portion are integrally molded with a non-foaming resin, and the reinforcement The cross section of the upper part of the inner volume is curved along the curvature of the foot so that the device is essentially along the foot, and is notched in the back of the heel to tighten the reinforcing device to the back of the foot. An attachment member is provided, and the outer side surface of the heel portion of the shoe is set to be less rigid than the inner side surface of the heel portion of the shoe and to be easily along the foot.

In the present invention, the valgus of the heel part immediately after landing is suppressed by strengthening the inside of the heel. In addition, the inner arch is lowered due to the valgus of the buttock, but since the rear part of the inner arch exists inside the heel, the inner arch is lowered by covering it with the bottom, the inner winding upper part and the inner side part. Can be suppressed.
On the other hand, since the rigidity of the outer side of the heel is low, the outer surface easily fits to the heel, and the reinforcing device easily fits to the bottom and inner surface of the heel. Therefore, it becomes easy to fit against the wrinkles of various shapes and dimensions, so that loss of force is less likely to occur.

  In the present invention, the tightening member may be a shoe race in addition to a belt for pulling up the reinforcing device toward the center of the instep.

  In the present invention, the reinforcing device is integrally provided with an outer surface portion that covers at least a part of the side surface on the outer side of the bag and an outer winding upper portion that winds up from the bottom surface portion to the outer surface portion. The cross section of the outer winding upper part is curved along the curvature of the foot along the foot, and the bending rigidity of the outer side surface part and the outer winding upper part is more than the bending rigidity of the inner side surface part and the inner winding upper part. It is preferable to set it small.

  In a preferred embodiment of the present invention, the inner surface portion covers at least the upper end portion of the rib and hardly covers the scaphoid bone, while the outer surface portion extends from the lower end portion of the rear end of the rib to the talus. Covering the rear half and the lower half of the ribs, and covering the front and upper ends of the ribs.

As for the inner side of the heel, it is more preferable that the inner side surface portion covers at least the rib bulge and desirably also covers the lower end portion of the scaphoid bone. However, the inner side surface does not cover the upper part of the talus.
The rib bulge and the lower end of the scapula correspond to the rear half of the medial arch of the foot. By covering the rib bulge from the side with the inner side surface, the valgus of the heel is suppressed. Further, by covering the lower end portion of the scaphoid bone corresponding to the apex of the inner arch from the side and the lower side with the inner side surface portion, the hallux valgus and the accompanying decrease in the arch are suppressed. There is a protrusion (inner collar) protruding inward at the upper part of the talus, and this protrusion (inner collar) moves downward when landing. The reason why the inner member does not cover the upper part of the talus is to prevent contact with the inner process (inner heel) of the talus.
In addition, when using resin with comparatively high bending rigidity, it is desirable that the inner side surface portion covers at least the rib ridge and the lower end portion of the scaphoid bone does not have to be covered. Even if the lower end of the scaphoid bone is not covered, by using a resin having high bending rigidity, the valgus of the buttocks immediately after landing and the accompanying decrease in the inner arch are suppressed. Moreover, even if resin with high bending rigidity is used, it becomes easy to follow various arch shapes by not covering the lower end portion of the scaphoid bone.

As for the outer side of the heel, it is more preferable that the outer side surface portion covers at least approximately 1/2 of the lower part of the rib and approximately 1/2 of the rear part from the heel rear end toward the instep. However, even if the outer surface portion is large, it does not cover the talus and cubic bone.
The role of the outer side surface portion is not to suppress the movement of the foot portion, but to improve the fit between the inner and outer members and the foot, unlike the inner side surface portion. Since the outer side surface portion has lower rigidity than the inner side surface portion, the entire outer surface portion is deformed so as to fall inward due to the tension of the fastening member (for example, belt). Due to this deformation, the inner side surface portion is also attracted to the foot, and the degree of adhesion between the foot and the inner side surface portion is increased.

  In a preferred embodiment of the present invention, the outer surface portion extends obliquely upward toward the front. The reason why the outer side surface portion has a shape extending toward the back is that the tension by the tightening member can easily reach the entire deformation of the reinforcing device through the outer surface portion.

  In the present invention, it is preferable that the outer surface of the heel portion of the shoe is essentially not provided with a material having higher bending rigidity than the inner surface of the heel portion of the shoe. Here, “the material having higher bending rigidity than the inner side surface of the heel part of the shoe is not essentially provided” means that the material having higher bending rigidity than the inner side surface of the heel part is not formed on the outer side surface of the heel part. In addition to the case where only the material having lower bending rigidity than the inner side surface of the buttock is provided on the outer side surface of the buttock, the material having higher bending rigidity than the inner side surface of the buttock is included. Even if it is provided on the outer surface of the inner surface, the material of the outer surface is provided separately from the material of the inner surface and the bottom surface, or is provided discontinuously, so that This includes the case where the outer surface portion of the portion has lower rigidity than the inner surface portion of the collar portion.

Embodiments of the present invention will be described below with reference to the drawings.
FIGS. 1A to 1C are an inner side view, a bottom view and an outer side view showing a shoe for athletics, respectively, and FIG. 2 is a rear view of the shoe. In the following description, a shoe for the right foot will be described as an example.

  As shown in FIGS. 1 and 2, this athletics shoe includes an upper 1 that wraps a foot and a shoe sole 2 that is provided outside the upper 1. The shoe sole 2 is formed using a non-foamed resin as a main material. As shown in FIG. 1 (b), a metallic spike 3 protruding from the bottom surface of the shoe sole 2 or a metallic spike mounting member for attaching the spike separately to the front foot 2F of the shoe sole 2 4 etc. are provided.

First and second resins 10, 20:
The shoe sole 2 is made of, for example, a thermoplastic resin, and a two-color resin including a first resin 10 having a lower Young's modulus and a second resin 20 having a higher Young's modulus than the first resin 10 is used. It is formed integrally. Accordingly, the second resin 20 is set to have a higher rigidity against bending caused by bending of the foot than the first resin 10.

First resin 10:
As shown in FIG. 3B, the first resin 10 includes a front region 11 provided on the forefoot portion 2F, a rear region 12 provided on the heel portion 2H, and a connecting portion 13 that connects the front region 11 and the rear region 12. It has.
3A to 3C are an inner side view, a bottom view, and an outer side view of the shoe sole 2, respectively. In FIG. 3, the second resin 20 is shaded to distinguish the two color resins from each other.
The front region 11 is provided between the MP joint and the toe. The MP joint refers to a joint constituted by the proximal phalanx B (the portion indicated by the oblique lines in FIG. 3B) and the metatarsal bone C.

  As shown in FIG. 3 (c), the connecting portion 13 is formed in a substantially “h” shape along the outer side surface of the foot, and covers the outer side of the arch of the foot from the side surface. The rear region 12 constitutes a part of a reinforcing device to be described later, and is provided in a part of the flange portion 2H. The front region 11, the rear region 12, and the connecting portion 13 are smoothly connected to each other and are integrally formed.

Second resin 20:
As shown in FIG. 3B, the second resin 20 includes first to fifth strip portions 21 to 25 and a connecting bar 30. The first to fourth belt-like portions 21 to 24 are integrally connected to each other at the portion 2 </ b> B to form a shank 26. The first to fourth strip portions 21 to 24 are smoothly connected in a substantially “X” shape around the shank 26. The shank 26 suppresses twisting of the foot during exercise.

  The connecting bar 30 integrally connects the first belt-like portion 21 and the second belt-like portion 22 in the forefoot portion 2F. The 1st strip | belt-shaped part 21, the 2nd strip | belt-shaped part 22, and the connection bar 30 are mutually connected smoothly, and are formed integrally. In addition, the 3rd-5th strip | belt-shaped parts 23-25 comprise a part of reinforcement apparatus mentioned later.

  A part of the first resin 10 is provided below the second resin 20. The connecting bar 30, the first and second strip portions 21, 22 overlap (overlap) the rear portion of the front region 11 of the first resin 10. As shown in FIG.1 (b), the 1st and 2nd strip | belt-shaped parts 21 and 22 and the connection bar 30 are covered from the lower side by the 1st resin 10 in the peripheral part in the front foot part 2F, and Non-peripheral parts (the first and second belt-like parts 21, 22 and the part other than the peripheral part of the connecting bar 30) are not covered with the first resin 10. That is, when viewed from the bottom side, portions of the first and second belt-like portions 21 and 22 and the connecting bar 30 that are not covered with the first resin 10 are present in a substantially “H” shape. .

As described above, when the resin having different material characteristics is bonded to the forefoot portion 2F, the margin of the second resin 20 is covered with the first resin 10 to increase the bonding margin (bonding area). Cracks at the interface between the resin and the second resin 20 can be prevented. That is, the first resin 10 is difficult to peel off from the second resin 20.
Further, by covering only the peripheral edge portion of the second resin 20 with the first resin 10, it is possible to reduce the weight of the shoe sole 2 as compared with the case where the entire surface of the second resin 20 is covered.

  The second strip portion 22 slightly overlaps the front end portion of the connecting portion 13 of the first resin 10. On the other hand, in the flange portion 2H, a part of the third belt portion 23 and the fifth belt portion 25 and the rear region 12 of the first resin 10 overlap.

Next, a detailed configuration of the shoe sole 2 will be described.
Forefoot 2F:
First strip 21;
As shown in FIG. 3 (b), the first band-like portion 21 is proximal to the first proximal phalanx B1 of the first finger f1 from the rear end of the forefoot portion 2F (generally in the foot length direction of the metatarsal bone C). It is provided up to the site of the bone head. The first band portion 21 is a region extending from the second and third wedge bones D2 and D3 through the second metatarsal C2 and the first metatarsal C1 to the first proximal phalange B1. It is provided in a strip shape.

  The first belt-like portion 21 is disposed so as to extend to the vicinity of the first distal phalange B1 distal head of the first finger f1, and does not extend to the first distal phalange A1. Therefore, the first belt-like portion 21 made of the second resin 20 having high rigidity does not extend to the first distal phalanx A1 beyond the interphalangeal joint (joint between the distal phalanx A and the proximal phalange B). It is relatively easy to bend between the first distal phalange A1 and the first proximal phalange B1. Therefore, in the first finger f1, the degree of freedom of bending at the interphalangeal joint between the first distal phalanx A1 and the first proximal phalange B1 is increased to ensure natural running ease. Can do.

Second strip 22;
The second band-like portion 22 is provided from the rear end of the forefoot portion 2F (approximately the center in the foot length direction of the metatarsal bone C) to the site of the distal end of the fifth proximal phalanx B5 of the fifth finger f5. The second band-shaped portion 22 is provided in a band shape in a region extending from the portion of the fourth metatarsal C4 through the portion of the fifth metatarsal C5 to the portion of the fifth proximal phalanx B5.

Unlike the first belt-like portion 21, the second belt-like portion 22 is disposed so as to extend beyond the interphalangeal joint to the fifth distal phalanx A5 distal head. Therefore, for the fifth finger f5, the second band-shaped portion 22 made of the high-stiffness second resin 20 is unnecessary because the bending between the fifth distal phalange A5 and the fifth proximal phalange B5 is suppressed. Leg bending can be suppressed.
In addition, if the 2nd strip | belt-shaped part 22 is extended and arrange | positioned at least more than 5th distal phalanx A5 proximal bone head, the said effect can be acquired.

First and second strips 21, 22;
The first and second belt-like portions 21 and 22 are approximately in the region from the MP joint to the proximal phalanx B1 and B5 distal head, respectively, as the rigidity against bending caused by bending of the foot approaches the distal head. It is formed to become gradually smaller. That is, it is set so that the degree of freedom of bending increases as it approaches the toe as it becomes easier to bend as it approaches the toe of the front foot 2F.

That is, as shown in FIGS. 3A to 3C, the widths and thicknesses of the first and second belt-like portions 21 and 22 become smaller as they approach the distal phalanx from the MP joint to the proximal phalanges B1 and B5. Is set to For example, as shown in FIG. 3B, the first and second belt-like portions 21 and 22 become narrower as they approach the distal phalanx from the MP joint to the proximal phalanges B1 and B5, and FIG. As shown in a) and (c), the thickness is set to be gradually reduced.
Therefore, the rigidity of the first and second belt-like portions 21 and 22 gradually decreases as going to the forefoot portion 2F.

As shown in FIGS. 3A to 3C, the front region 11 of the first resin 10 is formed with projecting portions 10 a and 10 b that project to the bottom surface side. The protrusions 10a and 10b are formed so as to cover the front end portions of the first belt-like portion 21 and the second belt-like portion 22 and to be smoothly connected to the front end portions. As shown in FIG. 1 (b), the protrusions 10a and 10b gradually become narrower as they go forward, and the thickness gradually decreases as shown in FIGS. 1 (a) and 1 (b). It has become.
Accordingly, the rigidity of the first and second belt-like parts 21 and 22 gradually decreases toward the forefoot part 2F, and the first resin 10 and the second resin 20 in the part are smoothly smoothed by the protruding parts 10a and 10b. The connection gradually decreases in rigidity.

  Thus, as it approaches the toe of the forefoot part 2F, it becomes easier to bend, so that the degree of freedom of bending increases as it approaches the toe.

Connecting bar 30;
As shown in FIG. 3B, the connecting bar 30 is arranged along the distal heads of the metatarsals C2, C3, and C4 of the second finger f2, the third finger f3, and the fourth finger f4. .
Therefore, since the connecting bar 30 formed of the second resin 20 having a large Young's modulus is provided behind the MP joint, it is possible to suppress the bending of the foot behind the MP joint. Further, the second resin 20 is not disposed in front of the MP joints of the second to fourth fingers f2 to f4, and a resin having rigidity that is essentially higher than that of the second resin 20 is not disposed. Therefore, since the MP joints of the second to fourth fingers f2 to f4 and bending in front thereof can be allowed, the forefoot is bent at the MP joint and the toe portion while suppressing the forefoot from bending at the MP joint. It can occur in both large areas.
Further, the connecting bar 30 can suppress twisting of the first and second belt-like portions 21 and 22.

  On the other hand, the connecting bar 30 and the first and second belt-like portions 21 and 22 are formed so as to be approximately centered on the MP joints of the first finger f1 and the fifth finger f5, respectively. That is, the intersection positions of the first and second belt-like portions 21 and 22 and the connecting bar 30 are approximately the positions of the MP joints of the first finger f1 and the fifth finger f5, respectively.

  Therefore, the MP joint portion has the highest rigidity for the first finger f1 and the fifth finger f5, and thus the bending of the MP joint is suppressed for the first finger f1 and the fifth finger f5, while the second to fourth Regarding the fingers f2 to f4, bending at the MP joint is relatively easy. Thereby, the blurring to the inside and outside of a kick-out direction can be suppressed, and the propulsive force to the front can be improved.

  In addition, the second resin 20 is formed in a substantially triangular shape in the region from the stepped portion of the foot to the MP joint by the first and second belt-like portions 21 and 22 and the connecting bar 30, and both the belt-like portions. Through holes are formed in portions surrounded by 21 and 22 and the connecting bar 30.

Connection part 13:
As shown in FIG. 1 (c), the connecting portion 13 of the first resin 10 is formed in a substantially “heavy” shape as described above, and the “heavy” shape portion extends from the outside of the upper 1 to the foot. It is formed in a shape that fits the outer side surface of the step. Note that the connecting portion 13 and the shank 26 of the second resin 20 are spaced apart from each other, and a through hole is formed therebetween.

Reinforcing device for buttocks 2H:
The rear region 12 of the first resin 10 and the third to fifth belt-like portions 23 to 25 shown in FIG. 3B are integrated with the upper 1 to form a reinforcing device along the foot.

A fourth strip 24;
The 4th strip | belt-shaped part 24 is provided so that it may cover from the bottom face of the rib G to an inner surface. As shown in FIG. 3A, the fourth belt-like portion 24 includes an inner side surface portion 24s that covers a part of the inner side surface of the heel, and a bottom surface portion 24d that covers a part of the bottom surface of the heel (FIG. 3B). The inner winding upper portion 24u wound up from the bottom surface portion 24d to the inner side surface portion 24s is integrally formed.

Fifth strip 25;
As shown in FIG. 3 (b), the fifth belt-like portion 25 is provided behind the fourth belt-like portion 24, and is provided from the bottom surface to the side surface of the rib G. As shown in FIG. 3 (a), the fifth strip 25 is similar to the fourth strip 24 in that the inner side 25s, the bottom 25d (FIG. 3 (b)) and the inner winding cover a part of the heel, respectively. The upper portion 25u is integrally formed.

  Due to the fourth belt-like portion 24 and the fifth belt-like portion 25, the inner winding upper portions 24u, 25u and the inner side surface portions 24s, 25s are arranged in two front and rear sections. The 4th belt-like part 24 and the 5th belt-like part 25 are joined in the upper part of the inner side surface parts 24s and 25s.

FIG. 4 is a side view showing a state in which a load is applied to the shoe sole 2, FIG. 4 (a) shows the inner side of the right foot part, and FIG. 4 (b) shows the outer side of the left foot part.
As shown in FIG. 4A, in the state where a load is applied, the inner side surface portions 24s, 25s of the fourth and fifth belt-like portions 24, 25 are the upper end portions of the ribs (the upper end portion Gu of the rib protuberance G1). And the talar J is not covered at all. Further, the inner side surface portion 24 s of the fourth belt-like portion 24 covers a part of the lower end of the scaphoid bone E.

Third strip 23;
As shown in FIG. 3B, the third belt-like portion 23 is provided so as to cover from the inside of the bottom surface of the rib G to the bottom surface of the cubic bone F. The 3rd strip | belt-shaped part 23 is provided with the bottom face part 23d which covers a part of bottom face of a collar. The bottom surface portion 25 d of the fifth belt-shaped portion 25 is connected to the bottom surface portion 23 d of the third belt-shaped portion 23. Therefore, the through-hole 20h is formed by the third to fifth belt-like portions 23, 24, and 25. Thus, weight reduction of shoes can be achieved by forming the through hole 20h.

  As described above, the first to fourth belt-like portions 21 to 24 are connected to each other at the portion 2B and are integrally formed. Accordingly, the third and fourth belt-like portions 23 and 24 constituting a part of the reinforcing member, together with the first and second belt-like portions 21 and 22, have plate-like shanks 26 that suppress the bending of the step portion 2B. Forming. That is, the reinforcing device of the flange portion 2H is formed integrally with the shank 26. Such shank 26 can suppress foot twist.

  As shown in the rear view of FIG. 2, the inner side surface portion 25s of the fifth belt-like portion 25 is greatly cut out on the rear surface of the heel portion 2H, and the cross section thereof is curved to the foot as shown by the two-dot chain line. It is curved along. Also in the cross section of the fourth belt-like portion 24, similarly to the fifth belt-like portion 25, the cross section is curved so as to follow the curvature of the foot.

Shape retaining member 6;
As shown in FIG. 2, the 1st resin 10 and the 2nd resin 20 are not arrange | positioned at the back surface part of the bag. As shown by the broken line in FIG. 2, for example, a shape-retaining member (core material) 6 formed of cardboard or the like is inserted into and fixed to the upper 1 of the back portion of the bag.
The inner surface side of the shape retaining member 6 is fixed to the inner surface portion 25 s of the fifth belt-shaped portion 25 via the upper 1. Further, the bottom surface side of the shape retaining member 6 is fixed to the bottom surface portion 25 d of the fifth belt-shaped portion 25 and the bottom surface portion 12 d of the rear region 12 via the upper 1.
In this embodiment, the shape-retaining member 6 is used for shape retention, but it is not always necessary to use such shape-retaining member, and if it is not used, the fit can be improved.

First fastening member 51;
The upper 1 is provided with a first fastening member 51 for lifting and fixing the fourth and fifth belt-like portions 24 and 25 toward the center of the instep FU. The first tightening member 51 includes an annular portion 5a fixed to the front portion of the inner side surface portion 24s of the fourth belt-like portion 24, and a belt-like fixing portion 5b inserted into the annular portion 5a. The fixing portion 5b is provided at a position corresponding to the instep FU portion of the foot in front of the ankle so as to extend from the outer surface portion of the upper. The fixing portion 5b extends from the upper FU portion toward the annular portion 5a. The fixing portion 5b is inserted into the annular portion 5a, and the folded portion can be fixed using a hook-and-loop fastener.

At the time of wearing, the fixing portion 5b is passed through the annular portion 5a, and the fixing portion 5b is pulled up toward the upper 1 of the instep FU portion and fixed by a hook-and-loop fastener.
Therefore, by tightening and fixing the first tightening member 51, the bottom surface, the rear end surface and the inner side surface of the collar are fixed to the reinforcing member. Since the inner side of the heel is reinforced by the fourth and fifth belt-like portions 24 and 25, the valgus (costal pronation) of the heel portion 2H immediately after landing can be suppressed.

  Further, by tightening by the first tightening member 51, the two inner side surface portions 24s, 25s by the fourth belt portion 24 and the fifth belt portion 25 may be separately deformed. In this case, it is possible to easily cope with variations in individual differences in feet, and the fit is improved.

A rear region 12 of the first resin 10;
As shown in FIGS. 1B and 1C, the rear region 12 of the first resin 10 includes a strip-shaped outer surface portion 12s and a bottom surface portion 12d that respectively cover a part of the outer side surface and the bottom surface of the flange portion 2H, An outer winding upper portion 12u that winds from the bottom surface portion 12d to the outer surface portion 12s is integrally formed. The rear region 12 is provided so as to overlap the rear portion of the third strip portion 23 and the bottom surface portion 25 d of the fifth strip portion 25.

  As shown in FIG. 4 (b), in a state where a load is applied to the shoe, the outer side surface portion 12s of the rear region 12 is a lower end portion of the rear end of the rib G (lower end portion of the rear end of the rib protuberance G1) Gd. From the talus J to the talus J, it covers approximately half of the rear end and the lower end of the rib G, and does not cover the front end Gf and the upper end Gu of the rib protuberance G1. The arrangement of the outer side surface portion 12s is intended to facilitate the deformation of the entire outer side surface of the foot due to the tension by the second tightening member described later while preventing the movement of the foot during the exercise.

  As shown by a two-dot chain line in FIG. 2, the cross section of the rear region 12 of the first resin 10 is formed to be curved along the curvature of the foot. As shown in FIG. 1C, the outer surface portion 12s extends obliquely upward toward the front.

Second fastening member 52;
The upper 1 is provided with a second fastening member 52. The second tightening member 52 includes an annular portion 5a and a belt-like fixing portion 5b, similar to the first tightening member 51 described above, and the annular portion 5a is provided in the upper 1 on the extension line of the outer surface portion 12s. ing. The fixing portion 5b is provided at a position corresponding to the instep FU portion of the foot in front of the ankle so as to extend from the inner side surface portion of the upper. The fixing part 5b can be passed through the annular part 5a and pulled up toward the instep FU to be fixed. At this time, the outer surface portion 12s, the annular portion 5a, and the fixing portion 5b are located on substantially the same straight line.

  Here, as described above, the rear region 12 that covers a part of the bottom surface and a part of the outer surface of the heel part 2H is formed of the first resin 10 that has low rigidity and is easily along the foot. Therefore, by tightening and fixing the second fastening member 52, the rear region 12 can be easily fitted to the bottom surface and the side surface of the flange portion 2H.

On the other hand, the shape retaining member 6 is formed to be small so that the upper 1 can be easily deformed along the rear portion of the heel portion 2H when the outer surface portion 12s of the first resin 10 is deformed along the outer surface of the foot. Has been. That is, as shown in FIG. 2, the shape retaining member 6 is formed so as to cover only the rear end portion of the flange portion 2H. Therefore, the shape-retaining member 6 does not hinder the deformation of the side surface of the upper, and by tightening the second fastening member 52, the outer surface portion 12s is deformed along the outer surface of the foot, and the outer surface portion 12s is formed on the outer surface of the foot. And the upper 1 can be fitted.
Therefore, the rear region 12 of the first resin 10 constituting a part of the reinforcing device can be easily fitted to the bottom portion and the outer surface of the heel, and the heel holdability is improved.
In this embodiment, the shape-retaining member 6 is used for shape retention, but it is not always necessary to use such shape-retaining member, and if it is not used, the fit can be improved.

  In the above-described embodiment, the fixing member 5b including the annular portion 5a and the hook-and-loop fastener is illustrated as the tightening members 51 and 52. However, the reinforcing device is pulled up toward the center of the instep FU. For example, in addition to using the annular portion 5a and the fixing portion 5b, the upper 1 may be tightened with a string.

  Further, the first resin 10 and the second resin 20 may be non-foaming resins. In addition to thermoplastic and thermosetting resins, for example, fiber reinforced plastics such as FRP (fiber reinforced plastic) are used. Can be used.

  Further, the inner portion of the collar portion of the second resin 20 does not necessarily need to be formed in two strips, and can be formed in a plurality of three or more strips, or the first portion without forming the through hole 20h. The inner part of the collar portion of the two resins 20 may be a single band-shaped portion.

  Moreover, about the rear area | region 12 of the 1st resin 10, it is not necessary to provide all the parts shown in an Example, For example, you may make it not provide the outer surface part 12s at all. Further, the front region 11 and the rear region 12 of the first resin 10 do not necessarily need to be connected by the connecting portion 13, and are formed by dividing the front region 11 and the rear region 12 without providing the connecting portion 13. May be.

  The present invention can be used for shoes for various sports such as athletics, football, basketball, and running.

(A)-(c) is respectively the inner side view of the shoes concerning the Example of this invention, a bottom view, and an outer side view. It is a rear view of the shoe. (A)-(c) is the inner side figure of the same shoe sole, a bottom view, and an outer side view, respectively. (A), (b) is the inner side figure and outer side figure which respectively show the state where the load was added to the same shoe sole.

Explanation of symbols

1: Upper 2B: Step part 2H: Ridge part 12s: Outer surface part 12u: Outer winding upper part 20h: Through hole 24s, 25s: Inner side part 24u, 25u: Inner winding upper part 26: Shank 51: First tightening member 52: Second fastening member FU: Instep E: Scaphoid G: Rib J: Talar

Claims (9)

A shoe provided with a reinforcement device along the foot integrally with the upper at the heel of the upper,
In the reinforcing device, an inner side surface portion that covers at least a part of the side surface inside the heel, a bottom surface portion that covers at least a part of the bottom surface of the heel, and an inner winding upper portion that winds from the bottom surface portion to the inner side surface portion are non-foaming. Molded integrally with resin,
The cross section of the upper part of the inner winding is curved along the curvature of the foot so that the reinforcing device essentially follows the foot, and is notched in the back of the heel,
A fastening member for fitting the reinforcing device to the foot is provided,
A shoe that is set so that the outer side surface of the heel portion of the shoe is less rigid than the inner side surface of the heel portion of the shoe and can be easily along the foot.   The shoe according to claim 1, wherein the outer side surface of the heel portion of the shoe is essentially not provided with a material having higher bending rigidity than the inner side surface of the heel portion of the shoe. In Claim 1, the reinforcing device is integrally provided with an outer surface portion covering at least a part of the outer side surface of the bag and an outer winding upper portion wound up from the bottom surface portion to the outer surface portion.
The cross section of the upper part of the outer winding is curved along the curvature of the foot so that the reinforcing device essentially follows the foot;
The shoe in which the bending rigidity of the outer side surface portion and the outer winding upper portion is set smaller than the bending rigidity of the inner side surface portion and the inner winding upper portion.   The shoe according to any one of claims 1 to 3, wherein the tightening member pulls up the reinforcing device toward the center of the instep.   In Claim 3 or 4, the inner side surface portion covers at least the upper end portion of the rib and hardly covers the scaphoid bone, while the outer side surface portion extends from the lower end portion of the rear end of the rib toward the talus. A shoe that covers approximately half of the rear and lower parts of the ribs and does not cover the front and upper ends of the ribs.   The shoe according to claim 3, 4 or 5, wherein the Young's modulus of the resin constituting the outer side surface portion is set to a value smaller than the Young's modulus of the resin constituting the inner side surface portion.   The shoe according to claim 3, wherein the outer surface portion extends obliquely upward toward the front.   The shoe according to any one of claims 1 to 7, wherein the inner winding upper part and the inner side surface part are arranged in a plurality of front and rear parts and are provided with one or more through holes.   The shoe according to any one of claims 1 to 8, wherein the reinforcing device is integrally formed with another reinforcing device that prevents bending of a stepped portion of a foot.

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