JP5649151B1 - Indoor competition shoes - Google Patents

Abstract

An outsole having a ground contact surface, a midsole disposed above the outsole, and a Young's modulus greater than the Young's modulus of the outsole and the midsole, and disposed between the outsole and the midsole. In a shoe for indoor competition with a reinforced resin reinforcing plate, the reinforced plate extends from the rear of the proximal phalanx of the toe and gavel to the front of the foot and at the front of the reinforced plate. A substrate portion that extends continuously from the inside toward the outside, and a winding portion that winds upward from the top surface of the front end portion of the midsole from the front portion of the substrate portion to the upper side Z and covers the front of the main body, and is integrally formed, and The footpad is not covered from directly above, and at least a part of the front surface of the winding part is covered with a non-slip member having a higher frictional force with the floor than the reinforcing plate.

Description

  The present invention relates to a shoe suitable for indoor competition such as volleyball.

  Most jumps in volleyball are jumps with both feet. In the current volleyball shoes, the reinforcement plate is extended from the middle foot to the head of the first middle foot, and the excessive extension (dorsiflexion) of the joint between the metatarsal joints (MP joint) is suppressed, so that Products with a structure that effectively transmits the right foot (right-handed player) kicking force in the horizontal direction to the floor surface are on the market.

  This precedent will increase jump speed. Also, the structure will only be effective for right-handed athletes in jumping.

However, the preceding example does not focus on the left foot (right-handed player) that contributes greatly to the jump height, and the jump height cannot be increased by one.

US 4,412,393 B (front page) US4,453,996 B (front page) US2010 / 0005684 A1 (front page) US2010 / 03007027 A1 (front page) JP57-186509 Y (Fig. 2) JP2002-360305 A (summary)

  An object of the present invention is to provide a shoe capable of increasing the jump height when jumping with both feet in indoor competition.

The present invention includes an outsole having a ground plane;
A midsole disposed above the outsole;
In a shoe for indoor competition having a Young's modulus greater than the Young's modulus of the outsole and the Young's modulus of the midsole, and comprising a resin reinforced plate disposed between the outsole and the midsole,
The reinforcing plate includes a base plate portion extending forward from the distal phalanx of the main heel and the small toe of the foot and extending inward and outward at the front portion of the reinforcing plate, and the midsole from the front portion of the base plate portion. The upper part of the front end of the front part of the front part of the front and the upper part of the winding part is formed integrally and continuously, and the toes including the main part and the small toe are not covered from directly above,
At least a part of the front surface of the winding part is covered with a non-slip member having a frictional force greater than that of the reinforcing plate.

  In an indoor competition such as volleyball, in order to increase the height of the jump, it is desirable to increase the impulse after the reaction force applied to the sole from the floor reaches a peak.

  The reinforcing plate of the present invention extends forward from the tip of the foot of the proximal phalanx of the main and small heels, and above the upper surface of the front end portion of the midsole from the front portion of the base plate portion in the winding portion. Winding up. Therefore, immediately before the toes move away from the floor surface during jumping, the extension (dorsiflexion) of the MP joints and interphalangeal joints of the main heel is suppressed, and the force to bend (bottom flexion) of the heel is transmitted via the reinforcing plate. Because it can be transmitted to the floor until the end, you will be able to get a big impulse. Therefore, the jump height could be increased. In addition, restoration of the reinforcing plate bent during the jump operation will increase the impulse and increase the height of the jump.

  On the other hand, in indoor competitions such as volleyball, the ball may be received with the tip of the toe in contact with the floor surface. In such a case, if the front surface of the reinforcing plate is completely exposed, slippage is likely to occur between the reinforcing plate and the floor surface, and the intended play (operation) cannot be realized.

  A part or all of the front surface of the upper part of the reinforcing plate of the present invention is covered with a non-slip member. Therefore, the above-mentioned slip can be suppressed and the expected play (motion) can be realized.

FIG. 1 is a schematic perspective view showing a sole according to a first embodiment of the present invention. FIG. 2 is a perspective view of the midsole and the reinforcing plate of the sole as seen from the bottom side. FIG. 3 is an exploded perspective view of the sole. FIG. 4 is a perspective view of the reinforcing plate. FIG. 5 is a plan view showing the relationship between the reinforcing plate and the foot skeleton. FIG. 6 is an inner side view of the reinforcing plate showing a partial cross section of the midsole and the outsole. FIG. 7A is a characteristic diagram showing the relationship between the vertical reaction force from the floor surface during jumping and jump efficiency, and FIG. 7B is a characteristic diagram showing the relationship between jump efficiency and jump height. FIG. 8 is a schematic perspective view illustrating the sole according to the second embodiment. 9A, 9B, and 9C are plan views showing a reinforcing plate according to another embodiment.

  Preferably, the winding portion protrudes 0.3 cm to 3.0 cm above the upper surface of the midsole at the front end portion of the midsole.

If the protrusion height of the upper part is less than 0.3 cm, the above-mentioned effect will be insufficient. On the other hand, if the protrusion height exceeds 3.0 cm, the rigidity of the toe of the shoe will be too great.
For this reason, the protrusion height is more preferably set to 0.4 cm to 2.0 cm, and most preferably 0.4 cm to 1.5 cm.

  Preferably, the position of the upper end of the upper part of the winding that covers the front of the distal phalanx of the main heel is set below the upper surface of the bone bottom of the distal phalanx of the main heel.

  In this case, it is possible to prevent the toe from becoming too rigid. In addition, an opening (through hole) or a notch may be present in the upper part of the winding that covers the distal phalanx.

  Preferably, the base plate portion extends continuously further to the rear than the joint between the middle foot and intercostal joint (MP joint) of the mother toe and the small toe.

In this case, excessive extension of the MP joint can be suppressed, and an increase in impulse due to restoration of the reinforcing plate bent at the MP joint can be expected.

  More preferably, the reinforcing plate further includes a connecting bar for connecting the inner side and the outer side of the base plate portion, the inner end of the connecting bar is disposed behind the outer end, and the connecting bar faces the outer side. It extends forward as it extends.

  In this case, the connecting bar extends in a direction intersecting with the arrangement of the MP joints of the foot. Therefore, excessive extension of the MP joint can be further suppressed.

Preferably, the base portion extends to the rear of the Lisfranc joint on the inside and outside of the foot.

  In this case, extension of the foot at the MP joint is further suppressed, and an increase in jump height can be expected.

Preferably, the anti-slip member covers from the lower end to the upper end of the winding part. In this case, there is no fear that the upper part of the resin comes into contact with the floor surface, and the slip can be reliably suppressed.
However, the anti-slip member does not need to cover the entire surface of the winding part, and an opening (through hole) may be provided in the anti-slip member so that the reinforcing plate can be seen from the front.

Preferably, the base plate portion is spaced apart from an outer edge portion extending rearward from the front portion so as to cover an outer edge of the midsole, an outer winding upper portion that winds upward from the outer edge portion, and an inner edge of the midsole. And an inner portion that extends rearward from the front ball along the inner edge from the front portion and covers at least a portion of the main ball.

In this case, the inner side of the base plate portion extending along the main body helps the MP joint of the main body extended during the jump to bend, thus increasing the jump height.
On the other hand, the outer edge portion and the outer winding upper portion that extend along the outer edge of the midsole not only help the bend side to bend, but also prevent the foot from swinging outward during landing or receiving.

  The invention will be more clearly understood from the following description of preferred embodiments with reference to the accompanying documents. However, the examples and figures are for illustration and description only and should not be used to define the scope of the present invention. The scope of the present invention is defined only by the claims. In the accompanying drawings, the same part numbers in a plurality of drawings indicate the same or corresponding parts.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 6 show a first embodiment. In each figure, the shoe upper is not shown.

This embodiment is a volleyball shoe, for example.
In the sole shown in FIG. 1, an outsole 1, a midsole 2 and a reinforcing plate 3 are laminated together by adhesion or welding.

The outsole 1 shown in FIG. 6 is formed of rubber foam or non-foam, and has a larger frictional force with the floor than the midsole 2 and the reinforcing plate 3. The outsole 1 includes a grounding surface 1s that contacts the floor and a front end winding portion that forms an anti-slip member 1b described later.

The midsole 2 is disposed above the outsole 1 and covers the entire area of the sole. The midsole 2 is mainly formed of a foam having a thermoplastic resin component such as EVA, and cushions the impact of landing. As shown in FIG. 1, a part of the midsole 2 may have a cushioning material 29 having rubber-like elasticity.

On the midsole 2, an insole (inner bottom) (not shown) is bonded. Further, a sock liner (insole) is mounted in an upper (not shown) on the insole. In addition, the upper covers and covers the instep.

3 and 6, the reinforcing plate 3 is formed of a non-foamed material having a thermoplastic resin component, and has a Young's modulus larger than the Young's modulus of the outsole 1 and the midsole 2.
In addition, the value of the preferable Young's modulus of the said reinforcement | strengthening plate 3 is 20-500 Mpa, More preferably, it is 40-200 Mpa.

The reinforcing plate 3 is disposed between the outsole 1 and the midsole 2. In this embodiment, the reinforcing plate 3 is sandwiched between the upper surface 1a of the outsole 1 and the lower surface 2b of the midsole 2. When the midsole 2 is laminated in two layers on the top and bottom, the reinforcing plate 3 may be disposed between the upper and lower midsole 2, so that the reinforcing plate 3 is composed of the outsole 1 and the midsole 2. What is necessary is just to be arrange | positioned between.

In FIG. 5, B1 is a mother's heel, B2 is a second heel, and B5 is a small heel. B11, B21 and B51 each indicate their distal phalanx, B13, B23 and B53 each indicate their proximal phalanx, and B14, B24 and B54 indicate their metatarsals.

The reinforcing plate 3 includes a substrate portion 3a, a front winding portion 3b, a connecting bar 3c, an outer edge portion 30, an inner portion 31, and a shank portion 32 that are integrally formed in a loop shape. The reinforcing plate 3 does not cover the toes including the mother toe B1 and the small toe B5 from directly above.

The base plate portion 3a extends from the rear B to the front F of the foot than the bone heads of the proximal phalanges B13 and B53 of the main heel B1 and the small heel B5. The front portion 3f of the reinforcing plate 3 is curved and extends continuously from the inner side Me toward the outer side La.
Note that the bone head refers to a portion of each bone that is close to the front joint and bulges slightly thickly, and is also called a distal bone head. On the other hand, the bone bottom refers to a portion of each bone that is close to the posterior joint and bulges slightly thickly, and is also called a proximal bone head.

As shown in FIG. 6, the front winding portion 3 b is integrally connected to the front portion 3 f of the base plate portion 3 a, extends to the front F from the front end of the midsole 2, and extends from the front portion 3 f to the midsole 2. It protrudes upward Z from the upper surface 2a of the front end 2e. Furthermore, the said front winding upper part 3b winds up to upper Z, and as shown in FIG. That is, the front winding portion 3b extends along the midsole 2 toward the front obliquely above the front end of the midsole 2, and protrudes from the upper surface 2a of the front end of the midsole 2 in a crescent or half moon shape.
A halftone dot is applied to a portion of the front winding portion 3b that protrudes upward Z from the midsole 2.

In the case of the present embodiment, as shown in FIGS. 1 and 6, the front winding portion 3 b is covered from the lower end to the upper end of the front winding portion 3 b by the anti-slip member 1 b constituting the outsole 1. The front upper part 3b and the anti-slip member 1b cover an upper toe portion (not shown).

However, in the present invention, if at least a part of the front surface 3s of the front upper part 3b of FIG. 2 is covered with the anti-slip member 1b of FIG. Good. For example, the anti-slip member 1b may be separate from the outsole 1. Moreover, a small through-hole or notch may be provided in the anti-slip member 1b so that a part of the front winding portion 3b can be visually recognized from the front.

  As shown in FIG. 6, the front winding portion 3 b preferably protrudes 0.3 cm to 3.0 cm above the upper surface 2 a of the midsole 2 at the front end 2 e of the midsole 2. The protrusion amount ΔH is more preferably 0.4 cm to 2.0 cm.

  It is preferable that the position of the upper end of the forward winding upper part 3b covering the distal phalange B11 of the main rib B1 is set below the upper surface F11 of the bone bottom of the distal phalange B11 of the main rib B1.

  As shown in FIG. 5, in the case of the present embodiment, the base plate portion 3a continuously extends to the rear B from the joints MP of the middle foot phalangeal joint MP of the small toe B1 and the small toe B5. Further, the substrate portion 3a extends to the rear B from the Lisfranc joint R on the inner side Me and the outer side La of the foot.

The substrate part 3a is integrally provided with an outer edge part 30, an outer winding upper part 30b, an inner part 31 and a shank part 32.

2 extends toward the rear B so as to cover the outer edge 2l of the midsole 2 from the front portion 3f. The outer winding upper part 30 b winds upward Z from the outer edge part 30. The inner portion 31 is spaced from the inner edge 2m of the midsole 2 and extends from the front portion 3f along the inner edge 2m to the rear B of the main ball BO in FIG. Cover.

Thus, the substrate portion 3a of the reinforcing plate 3 is formed in a loop shape that extends from the front portion 3f and the front winding portion 3b to the shank portion 32 via the outer edge portion 30 and the inner portion 31. The shank portion 32 reinforces the arch as is well known.

The reinforcing plate 3 further includes a connecting bar 3c that connects the inner side Me and the outer side La of the substrate portion 3a. The inner end 3m of the connecting bar 3c is disposed rearward B with respect to the outer end 3l. Accordingly, the connecting bar 3c extends forward F as it extends toward the outer side La.

Two through holes H1 and H2 are formed in the loop-shaped reinforcing plate 3 by the connecting bar 3c.
The connecting bar 3c will prevent the MP joint MP from the second toe B2 to the toe B5 from extending too much.

Next, the jump mechanism during volleyball spikes will be described.

For example, in the case of a right-handed player, the MP joint extends as the knee flexes and stretches from the state where both feet are in contact with the ground, first the right foot floats in the air, and then the left foot floats in the air.

FIG. 7A shows a test result of the relationship between the floor reaction force Fz and the jump efficiency ΣFz (Jump Efficiency), and FIG. 7B shows a test result of the relationship between the jump efficiency ΣFz and the jump height.

The jump efficiency ΣFz with halftone dots in FIG. 7A, that is, the impulse ΣFz until the foot completely leaves the floor after the floor reaction force Fz is maximized, as shown in FIG. It is assumed that there is a strong correlation.

Here, at the moment when the foot leaves, usually the MP joint is stretched and the floor surface is kicked by the front toe. If the force is easily applied to the toe and kicks the floor surface immediately before the takeoff, the impulse ΣFz has a size that is obtained by adding the additional region α2 indicated by diagonal lines to the main region α1 indicated by halftone dots. Become. Therefore, the jump height will be large.

Further, if the extended MP joint is bent just before the takeoff, the additional region α2 will be further increased, and the jump height will be further increased.

FIG. 8 shows a second embodiment.
In this example, the upper part of the front winding part 3 b is exposed from the anti-slip member 1 b which is the winding part of the outsole 1. In this example, the exposed front winding upper portion 3b is large, and the jump height at the time of spike will further increase.

In addition, when the increase in jump height was tested using the present Example 2, the jump height increased by about 2.5 cm compared to the conventional case.

9A to 9C show still another example.
In the example of FIG. 9A, the connecting bar 3c is not provided.
In the example of FIG. 9B, the front portion 3f of the reinforcing plate 3 is formed in a half-moon shape.
In the example of FIG. 9C, the reinforcing plate 3 has no opening formed from the front portion 3 f to the shank portion 32.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art will readily understand various changes and modifications within the obvious scope by looking at the present specification.

For example, the reinforcing plate 3 of FIG. 5 is provided from the front upper part 3b to the posterior B of the heads of the proximal phalanges B13 and B53 of the main heel B1 and the small heel B5, and has a portion of the posterior B from the head. It does not have to be.
Alternatively, the reinforcing plate 3 is provided from the anterior winding upper part 3b to the posterior B of the metatarsals B14 and B54 of the heel B1 and the small heel B5, and does not have a posterior B part from the bone head. It may be a shape.
In these cases, an outer edge portion 30 and an inner portion 31 are provided from the shank portion 32 toward the front F, and the front end portions of the outer edge portion 30 and the inner portion 31 are connected to the rear end portion of the base plate portion 3a of the reinforcing plate 3 and the legs. It is preferable to overlap in a part of the major axis direction.
The reinforcing plate 3 may be formed integrally with the midsole 2 when the midsole 2 is secondarily molded.
This structure may be provided only for the left foot or the right foot, but may be provided for both the left and right feet.

Accordingly, such changes and modifications are to be construed as within the scope of the present invention.

The present invention can be used for shoes for indoor competition such as volleyball.

1: Outsole 1a: Upper surface 1b: Anti-slip member 1s: Ground surface 2: Mid sole 2a: Upper surface 2b: Lower surface 2e: Front end 2l: Outer edge 2m: Inner edge 3: Reinforcement plate 30: Outer edge 30b: Outer winding upper part 31: Inner part 32: Shank part 3a: Substrate part 3b: (Forward) winding upper part 3c: Connecting bar 3e: Upper end 3f: Front part 3s: Front face 3l: Outer end 3m: Inner end B1: Bush B11: End phalanx B13: Base Phalanx B14: metatarsal bone B2: second heel B21: distal phalange B23: proximal phalanx B24: metatarsal bone B5: small heel B51: distal phalanx B53: proximal phalanx B54: metatarsal bone BO: mother's limb MP : Metatarsal joint between joints R: Lisfranc joint Me: Inside La: Outside F: Forward B: Backward Z: Upper ΔH: Projection amount

Claims (8)

An outsole 1 having a ground plane;
A midsole 2 disposed above the outsole 1;
An indoor competition having a Young's modulus greater than the Young's modulus of the outsole 1 and the Young's modulus of the midsole 2 and comprising a resin reinforced plate 3 disposed between the outsole 1 and the midsole 2 For shoes for
The reinforcing plate 3 extends from the posterior B to the front F of the foot tip from the proximal phalanx B13 of the main heel B1 and the proximal phalange B53 of the small heel B5, and mediates at the front portion 3f of the reinforcing plate 3 A base plate portion 3a extending continuously from Me toward the outer side La, and the front portion 3f of the base plate portion 3a rolls up above the upper surface 2a of the front end portion 2e of the midsole 2 to the front F of the main body B1 And the upper part 3b covering the upper part 3b is integrally formed, and does not cover the toes including the mother toe B1 and the small toe B5 from directly above,
Characterized in that at least part of the front surface 3s of the winding upper 3b is, the reinforcing frictional force between the floor surface than the plate 3 is rather large, covered with non-slip member 1b constituting a part of the outsole 1 And   The shoe of claim 1, wherein the winding part 3 b protrudes 0.3 cm to 3.0 cm above the upper surface 2 a of the midsole 2 at the front end 2 e of the midsole 2.   The shoe of claim 1, wherein the upper end position of the upper part 3b covering the front F of the distal phalanx B11 of the main rib B1 is set below the upper surface of the bone bottom of the distal phalange B11 of the main rib B1. .   4. The shoe according to claim 1, 2, or 3, wherein the base plate portion 3a extends continuously to the back B from the joint MP between the middle foot heel joints B1 and the small heel B5.   In Claim 4, the said reinforcement | strengthening plate 3 is further equipped with the connection bar 3c which connects the inner side Me of the said board | substrate part 3a, and the outer side La further, and the inner end 3m of the said connection bar 3c is back B rather than the outer side end 31. The connecting bar 3c extends forward F as it extends toward the outer side La.   The shoe according to any one of claims 1 to 5, wherein the base plate portion 3a extends to the rear B of the Lisfranc joint R on the inner side Me and the outer side La of the foot.   The shoe according to any one of claims 1 to 6, wherein the anti-slip member 1b covers from the lower end to the upper end of the winding upper portion 3b. The shoe according to any one of claims 1 to 7, wherein the substrate portion 3a is
An outer edge portion 30 extending toward the rear B so as to cover the outer edge 21 of the midsole 2 from the front portion 3f, an outer winding upper portion 30b that winds upward Z from the outer edge portion 30, and an inner edge 2m of the midsole 2 And an inner portion 31 extending from the front portion 3f to the rear B of the main ball ball BO along the inner edge 2m and covering at least a part of the main ball B1.

Images