JP6288687B1 - Double-sided shank and a pair of sports shoes equipped with the shank - Google Patents

Abstract

[PROBLEMS] To provide a shank capable of exerting an optimum shank effect on left and right feet in consideration of a difference in function between left and right feet in a badminton competition. A shank for use in sports shoes, comprising at least an arch portion 103 disposed below the arch and a heel portion 102 disposed below the arch, wherein the arch portion 103 and the heel portion 102 are provided. Each has a hollow portion by a configuration in which the members constituting the shank are vertically split and merged, and the arch 103 has a convex shape on the one surface side compared to the other surface side. The heel portion 102 is configured to bulge in a convex shape as compared with the one surface side in a cross-sectional view, and the shank having the structure is incorporated into a pair of left and right badminton shoes by being reversed. [Selection] Figure 1

Description

  The present invention relates to the technical field of shoes, and more particularly to a shoe shank used in sports with great differences in how to use left and right feet such as badminton.

  Conventionally, in the field of shoes, various shanks have been used for the purpose of exerting a shank effect (the role of supporting the arch of the foot and preventing the bottom from being distorted or bent even when weight is applied).

  In particular, in the field of sports shoes, in addition to the general shank effect, those that improve cushioning (for example, Patent Document 1), those that contribute to weight reduction of the entire shoe (for example, Patent Document 2), The shank itself is exposed to the outside so that it can be seen from the outside.

JP 2007-136145 A Japanese Patent Laying-Open No. 2005-185306

  By the way, the badminton competition is a sport characterized by a clear difference in the role of the left and right feet depending on the dominant hand (the hand on the side holding the racket). For example, in the case of right-handed, to catch up with the shuttle driven by the other party from a fixed position with the left foot as the axis, the operation of returning the shuttle with the racket gripped by the right hand while stepping forward the right foot forward and backward and left and right, and the following operation In preparation for this, the return operation for returning to a fixed position tends to be repeated. When a jump operation for hitting a shuttle at a high position or hitting a strong shot occurs, the user will land with the foot (left foot) opposite to the dominant hand and prepare for the next operation. If you are left-handed, your feet will move in the opposite direction. Also, in this specification, the hand on the side that holds the racket is referred to as the “dominant hand”, and the foot on the same side as the dominant hand is referred to as the “dominant hand side foot” (for example, when the right hand is the dominant hand, the dominant hand side foot is the right foot). Will be.)

  The right foot (dominant hand side foot) is greatly stepped on, so it must be landed from the heel. As a result, the order in which the shoe sole on the right foot (dominant hand side foot) side lands on the floor surface is the rear (heel side) → front (finger side) of the foot. That is, a function of absorbing the impact generated when the foot is depressed is required behind the right foot (dominant hand side foot). In addition, after landing, repulsion (force in the direction of separating the foot from the ground) tends to be required in front of the right foot (dominant hand side foot) for switching back to the next action.

  On the other hand, the left foot (non-dominant hand side foot) when landing after the jump motion is in the order of the front (finger or thumb ball) → back (back side) of the foot. That is, a function of absorbing an impact generated when landing is required in front of the left foot (non-dominant hand side foot). In addition, after landing, repulsion (force in the direction of separating the foot from the ground) tends to be required behind the left foot (non-dominant hand side foot) for the next operation.

  It is known that muscle fatigue during exercise is caused by the accumulation of repeated stress. It is also known that excessive accumulation of stress induces sports disorders (plantar fasciitis, Achilles tendonitis, fleshy, fatigue fracture, etc.). In particular, in badminton competition, as described above, the right foot and the left foot repeat different movements, so the degree of stress accumulation is relatively large.

  Even in badminton competition, dedicated shoes exist, and shank is also used for the dedicated shoes, but the difference in the clear roles of the left and right feet in the badminton competition described above is not taken into account at all. The shank is only designed and used for the same function in the left and right shoes. In other words, the functions of the left and right feet in the badminton competition were fully considered, and the functions were not assisted, and further, the feet that were used in such special ways were not sufficiently protected.

  Accordingly, the present invention has been made to solve the above-described problems, and provides a shank that can exhibit an optimal shank effect on the left and right feet in consideration of the difference in function between the left and right feet in badminton competitions. Is the issue.

  In order to solve the above-mentioned problems, the present invention is a shank used in sports shoes, comprising at least an arch portion disposed under the arch and a heel portion disposed under the arch, wherein the arch portion is provided. And the heel portion both have a hollow portion by a configuration in which the members constituting the shank are vertically split and merged, and the arch portion has a cross-sectional view and one surface side is compared to the other surface side. The ridge portion is configured to bulge in a convex shape, and the collar portion is configured to bulge in a convex shape on the other surface side as compared to the one surface side in a sectional view.

  The present invention is not simply that the functions of the left and right shanks are made different for the left and right feet. The shank with the above structure used on one side of the shoe is turned upside down (turned over) and incorporated into the other side of the shoe to achieve the different shank effects required for the left and right feet. It is doing. Further, since the left and right shanks are used by inverting the same one, the same “mold” can be manufactured, and the cost can be greatly reduced.

  In short, if the invention is broadly understood, a pair of sports shoes, a pair of left and right sports shoes, in which a shank incorporated in one shoe is inverted and incorporated in the other side, and Become.

  More specifically, when the shank having the above structure is incorporated into a badminton shoe, the right foot side shoe of a right-handed player who holds and plays the racket with the right hand is incorporated so that the one side of the shank is the upper surface. A pair of badminton shoes or a left-handed player who holds a racket with his left hand and plays with the left foot side of the shoe being incorporated so that the other side of the shank is an upper surface. For the pair of badminton, the one side of the shank is incorporated so that the upper surface is the upper surface, and the other foot side of the shank is the upper surface for the right foot side shoe. It can be regarded as an invention of shoes.

  Also, since it can also be used as a racket competition shoe other than badminton, it is built into the right foot side shoe of the right-handed player who holds the racket with his right hand so that the one side of the shank is the top surface A pair of racket competition shoes or a left-handed player who holds the racket with his left hand and plays with the left foot side of the shoe is incorporated so that the other side of the shank is an upper surface. A pair of racquets is incorporated in the shoe on the side so that the one surface side of the shank is an upper surface, and is incorporated in the shoe on the right foot side so that the other surface side of the shank is an upper surface. It can be regarded as an invention of a competition shoe.

  By applying the present invention, taking into account the difference in function between the left and right feet in badminton competition (racquet competition), a shank that can exhibit an optimal shank effect on each of the left and right legs, and a pair of sports shoes equipped with the shank As a result, the suppression of muscle fatigue and the effect of preventing sports injury can be exhibited at a high level.

It is the plane schematic block diagram which showed the state by which the double-sided shank which concerns on this invention is arrange | positioned at a pair of sports shoes. It is a double-sided shank shown as an example of embodiment of this invention, Comprising: It is a top view of the state (for the right leg of a right-handed player) in which the one side (A side) was turned up. FIG. 3A is an end view taken along line II-II in FIG. 2, and FIG. 3B is an end view taken along line III-III in FIG. It is a double-sided shank shown as an example of embodiment of this invention, Comprising: It is a top view of the state (for the right-handed player's left foot) in the other side (B side). 4A is an end view taken along the line IV-IV in FIG. 4, and FIG. 5B is an end view taken along the line VV in FIG. It is a perspective view of the double-sided shank shown as an example of embodiment of this invention.

  Hereinafter, a double-sided shank 100 that is an example of an embodiment of the present invention will be described with reference to the accompanying drawings. For easy understanding of the drawings, it should be noted that there are portions where the size and dimensions of each portion are exaggerated and there are portions that do not necessarily match the actual product. In addition, each drawing is viewed in the direction of the reference sign, and is expressed as upper, lower, left, right, near, and back based on the direction.

<Configuration of double-sided shank>
As shown in FIG. 1, the double-sided shank 100 according to the present invention is configured by being integrally formed in a substantially “U” shape when seen in a plan view. The material is not particularly limited, but it is most realistic to use a synthetic resin in view of cost, lightness, durability, and the like.

  The double-sided shank 100 (hereinafter sometimes simply referred to as “shank 100”) is used as the left and right shanks by inverting (turning over) the front and back of a single shank. For example, the shank 100 incorporated in the left and right shoes 10 and 12 in FIG. 1 is configured by incorporating exactly the same (shank) with the front and back reversed. Hereinafter, for the sake of easy understanding, the upper surface side of the shank 100 incorporated in the shoe 10 for the right foot is expressed as “A surface”, and the upper surface side of the shank 100 incorporated in the shoe 12 for the left foot. Is expressed as “B-plane”. Further, the “A surface” corresponds to “one surface” in the claims, and the “B surface” corresponds to “other surface” in the claims.

  The double-sided shank 100 includes a heel part 102, an arch part 103, and a stepping part 104. The heel part 102 is a part arranged below the position of the heel of the foot. The arch portion 103 is a portion disposed below the position of the arch (arch) of the foot. The stepping portion 104 is a portion that is disposed below the foot arch and further forward.

  First, the structure of the shank 100 will be described in detail with reference to FIGS. 2 and 3 on the assumption that the right hand is incorporated into the “right foot” of a right-handed player who holds the racket with the right hand.

  As shown in FIG. 2, the shank 100 includes an inner arch plate 106 and an outer arch plate 108 that are integrally formed with the heel plate 105. The inner arch plate 106 and the outer arch plate 108 are separated from each other so as to have a predetermined space.

  Further, an inner stepping plate 107 is integrally formed continuously with the inner arch plate 106. Further, an outer stepping plate 109 is integrally formed continuously with the outer arch plate 108.

  As described above, the collar portion 102 is configured by the collar plate 105. The arch portion 103 includes an inner arch plate 106 and an outer arch plate 108. Further, the stepping portion 104 includes an inner stepping plate 107 and an outer stepping plate 109.

  As shown in FIG. 3, as is apparent from the end surface of the shank 100 cut along the line of sight, the buttock plate 105, the inner arch plate 106, the inner stepping plate 107, the outer arch plate 108, and the outer stepping plate 109. Are provided with hollow portions 105c, 106c, 107c, 108c, and 109c in such a structure that members constituting the plate are vertically branched and merged.

  Looking at each plate, the collar plate 105 is composed of an A surface side collar plate 105a that forms the A surface side and has a substantially flat shape, and a B surface side that is convex (in the shape of a bow). A hollow portion 105c is formed between the B-side flange plate 105b configured to swell.

  Similarly, the inner arch plate 106 includes an A-side inner arch plate 106a that forms the A-side and bulges in a convex shape (in a bow shape), and a substantially flat shape that forms the B-side. A hollow portion 106c is formed between the B-side inner arch plate 106b.

  Similarly, the inner stepping plate 107 is configured to have an A-side and an A-side inner stepping plate 107a configured to bulge in a convex shape (in a bow shape), and to the B-side and the same as the A-side. A hollow portion 107c is formed between the B-side inner stepping plate 107b configured to bulge in a convex shape (in a bow shape).

  Similarly, the outer arch plate 108 includes an A-side outer arch plate 108a that forms the A-side and bulges in a convex shape (in a bow shape), and a substantially flat shape that forms the B-side. A hollow portion 108c is formed between the B-side outer arch plate 108b.

  Similarly, the outer stepping plate 109 is composed of the A-side outer stepping plate 109a that forms the A-side and bulges in a convex shape (in a bow shape), and the B-side and the A-side. A hollow portion 109c is formed between the B-side outer stepping plate 109b configured to bulge in a convex shape (in a bow shape).

  The state of being incorporated into the “left foot” of the right-handed player who holds the racket with the right hand and plays is the state shown in FIGS. 4 and 5, but the description is omitted because it is the same.

<Action and function of double-sided shank>
As described in the above configuration, the eaves plate 105 constituting the eaves portion 102 is configured such that the A side is flat and the B side is swollen. As a result, when the A-side is turned up (that is, when incorporated in the dominant hand side foot), it is possible to effectively buffer the impact applied to the heel by the configuration. On the other hand, when the B-side is turned up (that is, when incorporated into the non-dominant hand side foot), the structure effectively gives a repulsive force (a force for separating the heel from the ground) to the heel. be able to. That is, when it is incorporated into the dominant hand side foot landing from the heel, it effectively cushions the impact of the heel, and when incorporated into the non-dominant foot side not landing from the heel, the foot for the next movement The effect of assisting the movement of the body (pushing up the heel by the repulsive force) can be exhibited.

  Further, as described in the above configuration, the inner arch plate 106 and the outer arch plate 108 constituting the arch portion 103 are configured such that the B surface side is flat and the A surface side swells. As a result, when the A-side is turned up (that is, when it is incorporated into the dominant hand side foot), the structure effectively repels the arch (arch) and separates the arch (arch) from the ground. It is possible to give power to do so. On the other hand, when the B-side is turned up (that is, when it is incorporated in the non-dominant hand side foot), it is possible to effectively buffer the impact applied to the arch (arch) by this configuration. That is, when incorporated into the non-dominant hand foot landing from the front of the foot, the shock applied to the arch is effectively buffered, and when incorporated into the dominant foot side not landing from the front of the foot, The effect of assisting the movement of the foot toward the movement (pushing up the arch by the repulsive force) can be exhibited.

  As described above, the present invention is not simply that the functions exhibited by the left and right shanks are made different for the left and right feet. The shank with the above structure used on one side of the shoe is turned upside down (turned over) and incorporated into the shoe on the other side, so that different shank effects required for the left and right feet can be obtained with a single shank. The point that demonstrates is the biggest point. In this way, since the left and right shanks are used by inverting the same one, the same “mold” can be manufactured, and the cost can be greatly reduced.

<Other configuration examples>
The above description is based on the assumption that the player is a right-handed player who plays with the right hand holding the racket. Of course, even a left-handed player can exert the same effect by constructing the same configuration as described above by inverting it left and right. In addition, since it becomes duplication description, the description based on the left-handed player is abbreviate | omitted.

  In the above, badminton competition is described as an example, but even in other competitions (for example, tennis, table tennis, squash, etc.) It can be widely used as a shank.

10 ... Shoes (for right foot)
12 ... Shoes (for left foot)
100 ... Double-sided shank 102 ... Ridge part 103 ... Arch part 104 ... Stepping part 105 ... Ridge plate 105a ... A surface side collar plate 105b ... B surface side collar Part plate 105c ... hollow part 106 ... inner arch part plate 106a ... A side inner arch part plate 106b ... B side inner arch part plate 106c ... hollow part 107 ... inner stepping Plate 107a ... A side inner stepping plate 107b ... B side inner stepping plate 107c ... hollow portion 108 ... outer arch plate 108a ... A side outer arch plate 108b ... B side outer arch plate 108c ... Hollow portion 109 ... Outer stepping plate 109a ... Outside A side Trampling plate 109b · · · B side outer stepped plate 109c · · · hollow portion

Claims (6)

A shank used for sports shoes,
At least, the arch part arranged under the arch and the heel part arranged under the arch are integrally formed,
Each of the arch portion and the heel portion has a hollow portion by a configuration in which a member constituting the shank branches up and down and merges in a sectional view,
The arch portion is configured to swell in a convex shape compared to the other surface side in a cross-sectional view, one surface side,
The said collar part is cross-sectional view, and the other surface side swells and comprises a convex shape compared with the one surface side. The double-sided use shank characterized by the above-mentioned. A pair of left and right sports shoes,
A pair of sports shoes characterized in that a shank built into one shoe is flipped into the other side. A pair of left and right badminton shoes,
A right-handed shoe of a right-handed player who plays by holding the racket with his right hand is incorporated so that the one surface side of the shank according to claim 1 is an upper surface,
A pair of badminton shoes, wherein the shoe on the left foot side is incorporated so that the other surface side of the shank according to claim 1 is an upper surface. A pair of left and right badminton shoes,
The left-handed shoe of the left-handed player who plays by holding the racket with his left hand is incorporated so that the one surface side of the shank according to claim 1 is the upper surface,
A pair of badminton shoes, wherein the shoe on the right foot side is incorporated so that the other surface side of the shank according to claim 1 is an upper surface. A pair of left and right racket competition shoes,
A right-handed shoe of a right-handed player who plays by holding the racket with his right hand is incorporated so that the one surface side of the shank according to claim 1 is an upper surface,
A pair of racket competition shoes, wherein the shoe on the left foot side is incorporated such that the other surface side of the shank according to claim 1 is an upper surface. A pair of left and right racket competition shoes,
The left-handed shoe of the left-handed player who plays by holding the racket with his left hand is incorporated so that the one surface side of the shank according to claim 1 is the upper surface,
A pair of racket competition shoes, wherein the shoe on the right foot side is incorporated such that the other surface side of the shank according to claim 1 is an upper surface.

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