JP3238636U - sports shoes - Google Patents

Abstract

A sports shoe that efficiently utilizes the reaction force from the ground against the force of the foot pushing the ground in the direction from the knee to the heel. A sports shoe S of the present invention is a sports shoe having a sole 1 and an upper 3 provided on the upper side of the sole. A horizontal straight line that is higher than the part in contact with the ball of the toe and passes through the joint point between the rear end surface of the upper and the rear end surface of the heel portion of the sole in a side view of the sports shoe and the lowest point of the upper peripheral edge of the sole in the forefoot portion. An angle θ formed between a straight line passing through the foremost point of the toe and an intersection with a vertical line and the straight line is 5 degrees or more. [Selection drawing] Fig. 1

Description

The present invention relates to sports shoes.

For example, Patent Literature 1 discloses a sole structure of a sports shoe, which is provided at least in the heel portion of the sole structure, has a wavy shape in the heel peripheral portion, and has an amplitude of the wavy shape on the heel peripheral side. and a plurality of post members made of an elastic member, which are arranged along the heel periphery on the lower surface of the wave plate and whose upper surfaces are fixed to the lower surface of the wave plate. and the upper surface of the pillar member has an inclined surface whose height from the lower surface decreases toward the peripheral edge of the heel. ing.

JP 2009-118936 A

FIG. 9 is a side view of the sports shoe. The propulsive force F when walking or running is obtained as a reaction force of the force P with which the foot pushes the ground. The driving force F is directed at a predetermined angle α with respect to the ground, and is resolved into horizontal and vertical components. The horizontal component of the propulsive force F becomes the forward force and contributes to the speed of walking or running. However, conventional sports shoes have a problem that the predetermined angle α is not sufficient, and the reaction force from the ground against the force of the foot pushing the ground in the direction from the knee to the heel cannot be fully utilized.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sports shoe that efficiently utilizes the reaction force from the ground against the force of the foot pushing the ground in the direction from the knee to the heel.

The sports shoes of the present invention are sports shoes having a sole and an upper provided on the upper side of the sole, wherein the sole contact surface of the sole is higher than the part in contact with the ball of the thumb. , In a side view of the sports shoe, a horizontal straight line L1 passing through the junction point A between the rear end surface of the upper and the rear end surface of the heel portion of the sole, the lowest point B of the upper peripheral edge portion of the sole in the forefoot portion, and the foremost point C of the toe The angle θ formed between the straight line L3 and the straight line L1 is 5 degrees or more.

If the portion of the sole contacting surface of the sole that contacts the heel is higher than the portion that contacts the ball of the thumb, the horizontal resolution component of the propulsive force F increases. As a result, the speed of walking and running increases.

According to the present invention, it is possible to apply sports shoes that can efficiently utilize the reaction force from the ground against the force of the foot pushing the ground in the direction from the knee to the heel in the propelling direction.

1 is a side perspective view of a preferred embodiment of the sports shoe of the present invention; FIG. Explanatory drawing explaining the sole of sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining another preferable aspect of the sports shoes of this invention. Explanatory drawing explaining the driving force in sports shoes.

The sports shoes of the present invention are sports shoes having a sole and an upper provided on the upper side of the sole, wherein the sole contact surface of the sole is higher than the part in contact with the ball of the thumb. , In a side view of the sports shoe, a horizontal straight line L1 passing through the junction point A between the rear end surface of the upper and the rear end surface of the heel portion of the sole, the lowest point B of the upper peripheral edge portion of the sole in the forefoot portion, and the foremost point C of the toe The angle θ formed between the straight line L3 and the straight line L1 is 5 degrees or more.

Embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the aspects shown in the drawings. In the present invention, the toe side of sports shoes is defined as the front side, the heel side is defined as the rear side, and the direction connecting the toe and the heel is defined as the front-rear direction. The direction perpendicular to the front-rear direction and the horizontal direction is defined as the width direction. Also, the thumb side of the sports shoes is defined as the inside, and the little finger side is defined as the outside.

FIG. 1 is a side view of one embodiment of the sports shoe of the present invention. A sports shoe S of the present invention has a sole 1 and an upper 3 provided on the upper side of the sole 1 .

The upper 3 has, from the toe side to the heel side, a forefoot portion UF, a middle foot portion UM, and a rearfoot portion UH. The forefoot UF, middle foot UM, and rearfoot UH of the upper 3 correspond to the forefoot, middlefoot, and rearfoot of a person who wears the sports shoes (hereinafter referred to as the "wearer"). is. Similarly, the sole 1 has a forefoot portion SF, a middle foot portion SM, and a heel portion SH from the toe side to the heel side. In addition, in the present invention, the heel portion SH may be referred to as a rear foot portion.

The upper 3 is provided on the upper side of the sole 1 so as to cover the wearer's foot. The upper 3 is formed to cover the shoe from the forefoot portion to the rearfoot portion. It is preferable that the lower peripheral edge portion of the upper 3 and the upper peripheral edge portion of the sole 1 are fixed with an adhesive, for example.

Suitable materials for the upper 3 include, for example, knitted fabrics, woven fabrics, non-woven fabrics, synthetic leathers, artificial leathers, and natural leathers. As the upper 3, a net-like mesh fabric obtained by warp-knitting threads made of a thermoplastic material such as polyester is suitable.

The upper portion of the upper 3 is provided with a first opening 11 for inserting the wearer's foot. Moreover, it is preferable that the 2nd opening part 13 extended in the front-back direction is formed in communication with this 1st opening part. An eyelet decoration is attached to the upper part of the upper by sewing or the like in the second opening 13 . Eyelet holes are formed through the right and left edges of the eyelet decoration at intervals in the front-rear direction, and a shoelace is inserted through each eyelet hole. A tongue piece for opening or closing the second opening is provided on the front edge of the second opening. By tying the laces, the foot can be sufficiently secured to the shoe.

Although shoelaces and eyelet holes have been described as means for fixing the feet to the shoes, it is also preferable to change these to fixing means using hook-and-loop fasteners.

The sports shoe of the invention has a sole 1 . 2(a) is a side view of only the sole 1 seen from the inside, and FIG. 2(b) is a plan view of the sole 1 only. A junction point A is a junction point between the rear end surface of the upper and the rear end surface of the heel portion of the sole, and is the rearmost end point of the rear end surface of the upper in a side view.

The sole 1 of the sports shoe of the present invention has a sole contact surface (sole upper surface) 5 and a ground contact surface (sole lower surface) 7 . A portion 5h of the sole contact surface 5 that contacts the heel is higher than a portion 5f that contacts the ball of the thumb. By adopting such a structure, the angle α between the propulsive force F and the ground becomes small. As a result, the forward force (horizontally resolved component of the propulsive force F) becomes greater, and the walking or running speed increases.

The height difference h between the portion 5h in contact with the heel and the portion 5f in contact with the ball of the thumb is preferably 1 cm or more, more preferably 2 cm or more, further preferably 3 cm or more, further preferably 4 cm or more, further preferably 12 cm or less, and 10 cm. The following are more preferred. By setting the height difference h between the portion 5h in contact with the heel and the portion 5f in contact with the ball of the thumb within the above range, the ball moves forward in the propelling direction of the reaction force from the ground when the foot kicks the ground from the knee to the heel. This is because the force (horizontally decomposed component of the propulsion force F) can be made larger, making it easier to maintain the upright state.

The sole contact surface 5 can be appropriately inclined as long as the portion in contact with the heel is higher than the portion in contact with the ball of the thumb. For example, a mode in which the toe gradually rises from the toe to the rear end of the heel: the forefoot is substantially horizontal, the middle foot slopes upward from the front to the rear, and the rear foot is substantially horizontal. A horizontal mode, a mode in which the toe side is high and the toe side is low in the forefoot, and the mode slopes from the middle foot to the rear end of the hindfoot, and in the forefoot, the toe side is high and the toe is side. is lowered, the middle foot part is inclined so as to rise from the front to the rear, and the rear foot part is substantially horizontal.

FIG. 3 is an outside side view showing one aspect of the sports shoe of the present invention. In the present invention, points A to D, straight lines L1 to L3, and angle θ are defined in a side view (preferably an outer side view) of the sports shoe. A junction point A is a location where the rear end surface 9 of the upper 3 and the rear end surface of the sole heel portion SH are joined. Point B is the lowest point B of the upper perimeter of the sole in the forefoot. The lowest point B is the point where the lower peripheral edge of the upper and the upper peripheral edge of the sole are joined in the forefoot, and is the point with the shortest distance to the ground. A straight line L1 is a horizontal straight line passing through the lowest point B. FIG. The vertical line L2 is a vertical straight line passing through the foremost point C of the toe. Point D is the intersection of straight line L1 and vertical line L2. The straight line L1 and the vertical line L2 intersect at a point D at right angles. A straight line L3 is a straight line connecting the points A and D.

In the sports shoes of the present invention, the angle θ between the straight line L1 and the straight line L3 is 5 degrees or more. The angle θ is more preferably 10 degrees or more, more preferably 15 degrees or more, even more preferably 20 degrees or more, preferably 50 degrees or less, and more preferably 40 degrees or less. By setting the angle θ formed by the horizontal straight line L1 passing through the point B and the straight line L3 connecting the points A and D to the above range, the recoil from the ground when kicking the ground from the knee to the heel direction can be reduced. This is because it is possible to increase the forward force in the propulsion direction (the component of the propulsive force F that is divided in the horizontal direction), and to maintain the upright state.

The sole of the sports shoe of the invention is preferably made of an elastic material. The heel portion of the sole may be made of an elastic material, and the ball of the sole may be made of a shock-absorbing material. The sole may have a single-layer structure or a multi-layer structure. Moreover, you may combine several parts.

As shown in FIG. 4, the sole 1 preferably has a midsole 1a and an outsole 1b provided below the midsole 1a.

The outsole 1b may be provided in a range from the forefoot portion to the rearfoot portion, or may be provided only in the forefoot portion and the rearfoot portion.

The outsole 1b is made of a hard elastic member having a hardness higher than that of the midsole, which will be described later. For example, thermoplastic resin such as ethylene-vinyl acetate copolymer (EVA) or thermosetting resin such as polyurethane (PU). , or rubber materials such as butadiene rubber and chloroprene rubber are suitable. The lower surface of the outsole 1b is formed with a ground-contacting surface that contacts the road surface.

The midsole 1a is preferably provided so as to support the sole of the foot from the forefoot portion to the rearfoot portion. The midsole 1a is made of a soft elastic material, for example, a thermoplastic synthetic resin such as ethylene-vinyl acetate copolymer (EVA) or polypropylene or its foam, or a thermosetting resin such as polyurethane (PU) or its foam. Rubber materials such as butadiene rubber and chloroprene rubber, and their foams are suitable. The midsole 1a has its lower surface fixed to the upper surface of the outsole 1b with an adhesive or the like.

FIG. 5 is a side view of another preferred embodiment of the sports shoe of the present invention; A ground-contacting surface 7 of the heel portion of the sole extends rearward from a rear end surface 9 of the upper. By forming in this way, it becomes easier to obtain a reaction force against the force of pushing on the heel.

In FIG. 5, definitions of points A to D and straight lines L1 to L3 are the same as those explained in FIG. The perpendicular L4 is a straight line passing through the point A and perpendicular to the straight line L3 passing through the points A and D. Point Q is the trailing edge of the ground-contacting surface 7 of the sole in side view. A straight line L5 is a straight line connecting the point A and the point Q. As shown in FIG. Point P is the intersection of perpendicular L4 and the ground contact surface of the sole. The point T is the rearmost end point of the sole heel portion SH.

The ground contact surface 7 of the forefoot portion of the sole 1 may be curved upward from the ground on the toe side. The center of curvature is on the upper side of the sole. A ground-contacting surface 7 of the heel portion SH (rear foot portion) of the sole 1 is formed horizontally so as to contact the ground up to the rear edge Q thereof. The ground-contacting surface 7 of the sole is formed so that the rear portion of the rear edge Q is slightly curved. Therefore, the rearmost end point T of the sole heel portion SH is not in contact with the ground. Note that the trailing end point T and the trailing edge Q may be formed so as to coincide with each other.

In the present invention, the angle φ between the perpendicular L4 and the straight line L5 is preferably 0 degrees or more, more preferably 5 degrees or more, further preferably 10 degrees or more, and 15 degrees or more. is more preferably 45 degrees or less, and more preferably 40 degrees or less. This is because, when the angle φ formed by the perpendicular L4 and the straight line L5 is within the above range, it is possible to obtain a sufficient reaction force against the force of the foot pressing the ground. With the perpendicular L4 as a reference (0 degree), the counterclockwise angle around the point A is positive, and the clockwise angle is negative.

In another preferred embodiment, the rear edge Q of the ground-contacting surface 7 of the sole is preferably behind the point of intersection P between the ground and a perpendicular line L4 passing through the point A with respect to the straight line L3 passing through the points A and D. Specifically, the horizontal distance x between point P and point Q is preferably 0 cm or more, more preferably 1 cm or more, still more preferably 2 cm or more, preferably 10 cm or less, and more preferably 8 cm or less.

The sports shoes of the present invention may include an insole, and it is preferable that the shock absorbing material described above is placed near the ball of the foot, and the elastic material described above is placed near the heel. is preferred.

FIG. 6 is another variant of the sports shoe of the present invention. FIG. 6(a) is a side view, and FIG. 6(b) is a bottom view. A semi-circular arched void 17 is provided in the midfoot portion of the sole. By providing the arch-shaped gap 17, the arch is distorted at the time of landing, and the impact is alleviated, and the force of releasing the distortion of the arch and returning to its original shape becomes the upward or forward propulsion force.

In the middle foot portion of the arch, the front edge 17a and the rear edge 17b of the arch are formed in a straight line connecting the inner side and the outer side, and can be arranged in parallel.

The distance y between the arch front edge 17a and the rear edge 17b is preferably 2 cm or more, more preferably 3 cm or more, preferably 16 cm or less, and more preferably 14 cm or less.

The height of the arch-shaped gap 17 is preferably 2 cm or more, more preferably 3 cm or more, preferably 18 cm or less, and more preferably 16 cm or less.

When the semicircular arch-shaped gap 17 is provided in the midfoot portion of the sole, the thickness of the sole in the rearfoot portion is preferably 2 cm or more, more preferably 3 cm or more, further preferably 4 cm or more, and further preferably 5 cm or more. , preferably 20 cm or less, more preferably 19 cm or less. The thickness of the sole of the forefoot is preferably 0.5 cm or more, more preferably 1 cm or more, preferably 18 cm or less, and more preferably 17 cm or less.

In order to improve the strength of the arch, it is also preferable to provide the surface of the arch with a semicircular reinforcing layer made of a material having a higher strength than the material used for the sole. The thickness of the reinforcing layer is preferably 1 mm or more, more preferably 2 mm or more, preferably 50 mm or less, and more preferably 45 mm or less. Examples of materials for the reinforcing layer include high-strength synthetic resins, foams thereof, iron, stainless steel, aluminum, and alloys thereof.

FIG. 7 is another variation of the sports shoe of the present invention. FIG. 7(a) is a side view, and FIG. 7(b) is a bottom view. Spikes (pins) 19 are provided on the forefoot and rearfoot portions of the sole. By providing the spikes (pins) 19, slippage between the ground-contacting surface of the sole and the ground is reduced. As a result, the forward propulsion becomes greater. As for the arrangement of the spikes, in the embodiment shown in FIG. 7, the spikes (pins) 19 are provided on the forefoot and rearfoot portions of the sole. , the heel. It is also preferable that the sole is provided on all of the forefoot portion, middle foot portion, and heel portion.

Although the angle at which the spike is attached is not particularly limited, it is preferably parallel to the perpendicular line L4 that intersects the straight line L3 connecting the points AD at the point A, for example.

This aspect can be suitably used for athletics. Depending on the type of athletics, the length, placement or angle of the spikes may vary.

FIG. 8 is a modification of the sports shoe of the present invention. The upper 3 is provided with a first opening 11 for inserting the wearer's foot. A second opening 13 communicating with the first opening and extending in the front-rear direction is formed on the toe side, and a third opening 15 communicating with the first opening and extending in the front-rear direction is formed on the heel side. there is A tongue piece for opening or closing the second opening 13 is provided at the front edge of the second opening 13 . A tongue piece for opening or closing the third opening 15 is provided on the rear edge of the third opening 15 . Eyelet decorations are attached to the upper part of the upper by sewing or the like to the second opening 13 and the third opening 15 . Eyelet holes are formed through the right and left edges of the eyelet decoration at intervals in the front-rear direction, and a shoelace is inserted through each eyelet hole. By tying the shoelaces, the foot can be fixed to the shoe. In this aspect, especially by providing the third opening 15, the heel can be sufficiently fixed and the slippage between the shoe and the heel is eliminated, so that the wearer can comfortably use the shoe without consuming energy. can be done. In addition, the first opening 11, the second opening 13 and the third opening 15 can be raised upward so that the wearer can more easily feel the fit. Although shoelaces and eyelet holes have been described as means for fixing the heels to sports shoes, it is also desirable to change these to fixing means using hook-and-loop fasteners.

The present invention has been described above based on the preferred embodiments, but the present invention is not limited to the above embodiments, and the shape, configuration, arrangement, and configuration of each embodiment within the scope of the gist of the present invention. Materials and the like can be changed as appropriate. Moreover, the provisions of the configuration, arrangement, material, shape, numerical range, etc. shown in each embodiment can be applied independently or in combination of any two or more provisions.

The sports shoes of the present invention do not include women's fashion shoes (eg, high heels).

S: sports shoes, 1: sole, 3: upper, 5: sole contact surface, 7: ground contact surface, 9: upper rear end surface, 11: first opening, 13: second opening, 15: second 3 openings

Claims (5)

A sports shoe having a sole and an upper provided on the upper side of the sole, wherein the sole contact surface of the sole has a portion in contact with the heel that is higher than a portion in contact with the ball of the thumb, and is such that when viewed from the side of the sports shoe , a junction point A between the rear end surface of the upper and the rear end surface of the heel of the sole, a horizontal straight line L1 passing through the lowest point B of the upper peripheral edge of the sole in the forefoot, and a vertical line L2 passing through the foremost point C of the toe. A sports shoe, characterized in that an angle θ formed between a straight line L3 connecting the intersection point D and the straight line L1 is 5 degrees or more. 2. The sports shoe according to claim 1, wherein the ground-contacting surface of the heel portion of the sole extends rearward from the rear end surface of the upper. 2. An angle φ between a perpendicular line L4 passing through the point A of the straight line L3 and a straight line L5 passing through the junction point A and the point Q which is the rear edge of the ground-contacting surface of the sole is 5 degrees or more. Sports shoes as described. The upper is formed with a first opening for inserting a wearer's foot and a second opening communicating with the first opening and extending in the front-rear direction on the toe side of the first opening, 2. The sports shoe according to claim 1, wherein the front edge of the second opening is provided with a tongue for opening or closing the second opening. A third opening communicating with the first opening and extending in the front-rear direction is formed on the heel side of the first opening. 5. Sports shoes according to claim 4, further comprising a tongue for setting.

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