JP2009183345A - Spiked shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure capable of suppressing the drop of a heel and eliminating any possibility of obstructing the bending property of a sole in a spiked shoe. <P>SOLUTION: This spiked shoe includes a resin hard plate 1 where spikes are mounted, and a woven-fabric tensile material 2 exerting drag in tension and no drag in compression, wherein the tensile material 2 is fixed to the upper face of the hard plate 1 at first and second fixing portions 21 and 22 spaced in the front/rear direction, non-fixed to the upper face of the hard plate 1 at least at a part of a curved part 10 and is spaced from the upper face of the hard plate 1. The tensile material is adapted to receive a tensile force when the hard plate 1 is going to deformed for reducing the curvature of the curved part 10, When the heel H is going to drop in a direction indicated by an arrow Z when a wearer grounds in running, the curvature of the curved part 10 is reduced, so that the tensile force is applied to the tensile material 2 to suppress the reduction in the curvature of the curved part 10 and suppress the drop of the heel H. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a spike shoe including a hard plate to which a spike is attached.

In general, the movement of the center of gravity in a low-speed running motion (hereinafter referred to as “running motion”) is landed from the heel, passes mainly outside the middle foot, and then takes off at the toe through the vicinity of the baseball of the front foot. .
On the other hand, the movement of the center of gravity in high-speed running motion represented by short-distance events in track and field events (hereinafter referred to as “sprint motion”) does not land from the heel, but starts from the outside of the forefoot, near the base of the small heel. Without touching down, it passes through the vicinity of the baseball and moves off at the toe.

  In such a sprint operation, when landing, the kite falls downward toward the road surface. When the saddle falls, the center of gravity moves once stagnates or retreats, and the center of gravity cannot be moved smoothly. This phenomenon is said to be a cause of time loss from the viewpoint of maintaining a high traveling speed and improving recording in the sprint operation.

The following various techniques are disclosed as spike shoes for suppressing depression of the heel.
Japanese Patent No. 2871537 (FIG. 3) Japanese Patent Publication No. 05-72801 (Figs. 1 and 3) Japanese Patent Laying-Open No. 2005-95483 (FIG. 1) JP-A-2005-102788 (FIGS. 3 to 5)

In the invention of Patent Document 1, since the heel is prevented from descending by the inner and outer two ribs provided on the middle foot, the hard rib is grounded at the time of landing. For this reason, a push-up feeling accompanying landing occurs.
Further, since the thickness of the sole of the rib portion is remarkably increased, there is a possibility that the bending (dorsiflexion) of the sole during running may be hindered.

  The invention of Patent Document 2 uses a resistance to compression deformation that acts on the sole at the time of landing to suppress the drop of the heel. That is, the wedge-shaped support member is elastically deformed by the pressure accompanying landing. However, this deformation becomes a cause that the drop of the heel cannot be sufficiently suppressed. On the other hand, since it is elastically deformed, the push-up is considered to be small, but the weight of the shoe tends to increase.

  In the invention of Patent Document 3, in a sole provided with a convex rib extending in the front-rear direction, a cut is formed in the rib to allow bending upward (dorsiflexion) of the sole, and downward depression (bottom flexion). Suppress. However, since a high stress is generated at the tip of the rib cut at the time of bottom bending, the durability is significantly reduced.

  In the invention of Patent Document 4, a reinforcing portion is provided at the stepping portion of the sole, and a rib-like member that smoothly connects the lower surface of the reinforcing portion and the lower surface of the buttocks is provided. Even so, weight can be transferred smoothly. However, although the rigidity of the middle foot portion is increased, it is premised on the ground contact from the heel portion or the middle foot portion, and it is difficult to suppress the drop of the heel generated upon landing from the front foot portion.

  An object of the present invention is to provide a structure that can suppress the fall of the heel and prevents the flexibility of the sole, the disadvantage in terms of weight, and the durability from being lowered in the spike shoes. is there.

The configuration and principle of the present invention for achieving the above object will be described with reference to FIG.
This spike shoe includes a resin-made hard plate 1 to which a spike is attached, and a fabric-like tensile material 2 that exhibits a drag force during tension and does not exhibit a drag force during compression.
The hard plate 1 includes, in a cross section along the front-rear direction of the foot, a curved portion 10 that covers a lower portion of the arch of the foot and is curved so as to protrude downward, and a forefoot that covers the toe from below in front of the arch. A portion 11 and a rear foot portion 12 that covers the heel from below at the rear of the arch are integrally connected.
The tension member 2 is fixed to the upper surface of the hard plate 1 at the first and second fixing portions 21 and 22 separated in the front-rear direction, and the upper surface of the hard plate 1 is at least part of the curved portion 10. And is separated from the upper surface of the hard plate 1. That is, a space S is provided between the bending portion 10 and the tension member 2.

  When the hard plate 1 is to be deformed so that the curvature of the curved portion 10 becomes small, a tension acts on the tension member 2. If the kite H tries to drop in the direction of the arrow Z during landing while traveling, the curvature of the bending portion 10 tends to decrease, so that tension acts on the tension member 2 and the curvature of the bending portion 10 decreases. Is suppressed, and the drop of the heel H is suppressed.

  On the other hand, if the hard plate 1 is deformed so that the curvature of the curved portion 10 is increased, the tensile material 2 is loosened. When the foot is bent during running, that is, when the foot is bent in the arrow direction X, the curvature of the bending portion 10 increases. Therefore, the tension member 2 is loosened to allow the hard plate 1 to be bent.

  In the present invention, the fabric-like member forming the tensile material 2 may be any material that is not easily stretched and is difficult to stretch and can be loosened. In addition to fiber materials such as, artificial leather can be used.

  As shown in FIG. 1A, the fabric-like tension material 2 may be disposed between the upper 3 and the hard plate 1. In this case, if the hard plate 1 is to be deformed so that the curvature of the bending portion 10 becomes small, the bending portion 10 in the tensile member 2 is immediately applied to the tensile member 2 so that the tensile force acts on the tensile member 2 and contributes to the suppression of wrinkles. It is preferable to form a portion facing the straight line.

  On the other hand, the fabric-like tension material 2 may be fixed to the back surface or the surface of the bottom of the upper 3, or may be formed at the bottom of the upper 3 itself as shown in FIG. Since the bottom portion of the upper 3 is curved along the arch of the foot, when a tensile force acts on the tensile material 2, the tensile material 2 tends to be deformed flat. However, since the upper 3 of the spiked shoe is usually fastened to the back of the foot with a fastening member such as a belt, there is no possibility that the bottom of the upper 3 is deformed flat. Therefore, tension acts on the tension member 2 to prevent wrinkles from dropping.

Embodiment 1 of the present invention will be described below with reference to FIGS.
In the first embodiment, the tension member 2 shown in FIG. 5 is formed by the upper 3 itself shown in FIG. As shown in FIG. 4, a spike 4 for athletics is attached (fixed or fixed) to the hard plate 1.
In addition, the through hole 13 for reducing the weight of the hard plate 1 is closed with a woven fabric 14 that does not constitute the tension member 2 (FIG. 5).

In FIG. 6, below the foot arch Ar, the normal hard plate is curved so as to protrude upward along the arch Ar, whereas the curve of the hard plate 1 of the spiked shoe is shown. The portion 10 is curved below the foot arch Ar so as to protrude downward, opposite to the arch Ar.
The hard plate 1 is smoothly curved so as to be convex upward along the arch of the sole behind the curved portion 10.

Since the bending portion 10 is curved as described above, a space S is formed between the tensile material 2 formed at the bottom of the upper 3 and the bending portion 10. Incidentally, the space S may be provided in at least a portion of the lower third metatarsal B4 ₃ in FIG. 7, it may be filled and lightweight sponge.

  As shown in FIG. 8 (cross-sectional view taken along line CC in FIG. 7), the space S is preferably continuous from the inside to the outside of the foot. For example, it is preferable that the said tension | tensile_strength material 2 and the curved part 10 are mutually spaced apart over the full width from the inner side of a leg | foot to the outer side in at least 1 cross section.

  In addition, the tension | tensile_strength material 2 and the curved part 10 may mutually be joined in the part from the inner side of a leg | foot to the outer side in the range which does not prevent the fall suppression effect of a heel. For example, a part or all of the front end portion and / or the rear end portion of the curved portion 10 in FIG. 6 may be bonded to the tensile material 2.

The bending portion 10 only needs to be provided so as to cover at least a part of the arch Ar of the foot, but is provided at least between the Chopard joint Ch and the MP joint MP ₁ of the toe. As shown in FIG. 5, it is preferable that at least a part of the bending portion 10 is provided between the portion corresponding to the third metatarsal bone of the Lisfranc joint L and the MP joint MP ₃ of the third heel.

  As shown in FIGS. 2 and 3, the upper 3 is provided with a fastening member such as a belt 39, so that the upper 3 fits the instep and the sole of the foot. Therefore, even if the portion of the upper 3 of FIG. 6 as the tensile material 2 is curved along the sole, when the heel falls, the tensile force is exerted in the foot length direction, and the deformation of the bending portion 10 is suppressed. Sag fall is suppressed.

The position of the rear end of the first fixing portion 21 is preferably a position behind the MP joint MP _{1 of the main} rod, and more preferably a position behind the MP joint MP ₃ of the third rod in FIG.

The position of the front end of the second fixing portion 22 may be provided in the lower or front than this calcaneal B _H, near the front end of the heel bone B _H, that is, to dispose in the vicinity of Chopard joint Ch preferred.

  The tension member 2 shown in FIG. 1A arranged in the space near the middle foot may be connected to the upper 3 with a belt or the like, and the tension of the tension member 2 may be adjusted.

  Further, as shown in FIG. 9, the heel portion may be a resin counter 12 c or the like, and may be integrated with the hard plate 1, or the counter 12 c may be fixed to the foot in conjunction with the upper 3 with a belt 38 or the like.

  The spike shoes of the present invention can be used for various competitions besides short distances in track and field competitions.

It is a conceptual diagram of the spike shoes which shows the principle of this invention. It is a perspective view of the spike shoes which show Example 1 of the present invention. It is the same outer side view. It is the perspective view seen from the bottom face side. It is the BB sectional drawing of FIG. 7 which added the frame | skeleton seen from the outer surface of a leg | foot. It is the same sectional view which added the frame seen from the inner side of a foot. It is a bottom view of the sole which added the top view of the frame | skeleton of a leg | foot. FIG. 8 is a cross-sectional view of the shoe taken along the line CC in FIG. 7. It is a side view of shoes which omitted a spike which shows other examples.

Explanation of symbols

1: Hard plate 10: Curved portion 11: Forefoot portion 12: Rear foot portion 2: Tensile material 21: First fixing portion 22: Second fixing portion 3: Upper 4: Spike H: Ｓ S: Space

Claims (7)

A resin-made hard plate to which a spike is attached, and a fabric-like tensile material that exhibits a drag force during tension and does not exhibit a drag force during compression,
In the cross section along the front-rear direction of the foot, the hard plate,
A curved portion that covers the lower part of the arch of the foot and curves so as to protrude downward,
A forefoot that covers the toes from below in front of the arch;
The hind foot part that covers the heel from below at the back of the arch is integrally connected,
The tensile material is fixed to the upper surface of the hard plate in the first and second fixing portions separated in the front-rear direction, and is not fixed to the upper surface of the hard plate in at least a part of the curved portion, And it is separated from the upper surface of the hard plate,
When trying to deform the hard plate so that the curvature of the curved portion becomes small, tension acts on the tensile material,
On the other hand, spike shoes set so that the tensile material is loosened when the hard plate is deformed so as to increase the curvature. In claim 1, when the heel is about to drop during landing during traveling, tension is applied to the tensile material to suppress a decrease in the curvature of the curved portion, thereby suppressing the drop of the heel.
On the other hand, a spike shoe that allows the bending of the hard plate due to loosening of the tensile material when the foot is bent during running.   The spike shoe according to claim 1 or 2, wherein the tensile material is formed at the bottom of the upper.   The spike shoe according to claim 1 or 2, wherein the tensile material is disposed between the upper and the hard plate.   The spike shoe according to any one of claims 1 to 4, wherein a rear end of the first fixing portion of the tensile member is set at a position rearward of the MP joint of the main collar.   The spike shoe according to any one of claims 1 to 5, wherein the bending portion is provided between an MP joint and a Chopard joint of a mother's heel.   The spike shoe according to claim 6, wherein the tension member is spaced upward from the upper surface of the hard plate below the metatarsal bone of a third heel.