JP2968451B2 - Sports shoe soles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the sole of a sports shoe, and more particularly to the shape of the heel of the sole.

[0002]

2. Description of the Related Art The stress applied to the sole of a person when walking or running is different depending on the physique of each person, the speed at the time of walking, the shape of the road surface (inclination angle = climbing, descending, right and left inclination), and the like. However, there is one theory called a “weight-bearing route” that represents the degree of weight applied when the sole lands. As an example of the theory, as shown in FIG. 1 of the content published by the applicant of the present invention as Japanese Utility Model Publication No. 55-9202, "The weight load is from the center of the heel to a, b, c, and c.
It moves sequentially to d and e, and then moves from the base of the thumb to the fingertip and then to g. Explaining this, the weight load is outward from the center of the heel to the outside of the foot abdomen, from the center of the foot abdomen to the inside of the foot abdomen, and from E to the base of the thumb. It moves, and this moving route is called a weight-bearing route. ] Has been described. Along with this weight-bearing path, disc-shaped recesses with large and small diameters are formed on the surface of the shoe sole to mitigate the impact on the foot when walking or running, and to increase the dash force during running. A device for the purpose has been proposed.

[0003]

However, when observing the relationship between the foot and the sole during sprinting while wearing sports shoes on the basis of the "weight-bearing path", it is found that the heel portion of the sole of the shoe at the time of landing is "after the heel sole". It has been found that the "edge" lands first and acts to lose sprint energy. Further, the distance between the earliest arrival point which is the ground reaction force acting point F when there is no heel cut and the center point X of the ankle joint, that is, the moment arm E when there is no heel cut increases, and the ground reaction force and the heel cut are increased. It has been found that the moment around the ankle joint, which is the product of the moment arm E and the arm around the ankle joint, is increased, and a large stress is applied to the muscle group around the ankle joint (see FIG. 1).

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a heel bone of a foot when the rear edge of the sole of the sole with the outsole bottom surface extending in the heel direction lands first. The point where the point where the landing speed direction line acting on the ground intersects the outsole bottom surface is defined as an intersection, and the range from the intersection to the heel sole rear edge is defined as a heel cut area, so that the heel cut angle is equal to the landing angle. To form a heel sole with a wide flat surface at the heel sole rear edge, and at the time of landing, the "heel sole rear edge" of the heel part of the sole
In order not to lose running energy. Further, the distance between the ground reaction force vector starting from the ground reaction force acting point in the heel cut area which is the earliest landing area and the center point of the ankle joint, that is, the moment arm is reduced, and the muscle group around the ankle joint is reduced. It is an attempt to reduce stress.

[0005]

The rear edge of the sole of the sole of the sole of the sole according to the present invention does not touch the ground until the intersection at the bottom of the sole of the sole of the sole contacts the ground. When the intersection touches the ground and weight is applied to the ground, all of the weight is received by the entire surface of the heel cut area provided on the sole of the heel, and the ground contact area is extremely extensively distributed with the ground impact. At the same time, the frictional resistance with the ground increases, and a preventive action such as slippage is exerted. Further, the ground reaction force action point moves from the first arrival point into the heel cut area, and the distance between the ground reaction force vector starting from the ground reaction force action point and the center point of the ankle joint, that is, the moment arm is shortened. It has the effect of reducing stress on muscle groups around the joint.

[0006]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram showing a relationship between a foot at the time of landing while running and wearing sports shoes and a sole of the sports shoes.
FIG. 2 is a plan view of the sole of the present invention, FIG. 3 is a schematic view of a heel cut shape defining element in FIG. 1, and FIG.
In the case of a runner of 0 cm, the distance (Y) in the thickness direction of the heel cut with the change in the thickness (T _H ) of the heel of the sole body and the thickness (T _B ) of the tread portion of the sole body and the heel cut It is a figure showing the situation of change of distance ( X ) of a foot length direction.

In a sports shoe in which an upper (13) made of an arbitrary material and a sole body (12) made of an arbitrary material are integrally formed by bonding, sewing or other means, the sports shoe is worn. During running, the heel of the calcaneus (2) of the foot (1) when the heel sole rear edge (C) having the outsole bottom surface (5) of the sole body (12) extended in the heel direction lands first. The intersection point between the landing speed direction line (4) where the lowest point (3) of the bone acts on the ground (B) and the bottom surface (5) of the outsole is defined as an intersection (6). When the area reaching the edge (C) is the heel cut area (7) and the heel bottom rear edge (C1) is formed, the heel cut angle (11) is equal to the landing angle (11A) so that the sports shoe is It forms the sole of the shoe. That is,
The formation of the heel cut area (7) depends on the sole body (1).
2) The heel cut angle (1) in the case of a shoe sole in which the thickness of the tread portion and the thickness of the heel portion and the entire shoe sole vary in various ways.
1) and the formation of the heel cut area (7) are as shown in FIG. 3. Means for obtaining the intersection (6) and the heel cut angle (11) corresponding to the change in size, thickness of the sole sole body (12). Is determined by the means described in Equation 1.

[0008]

[Formula 1]

[0009] in the case of a runner's foot length 26.0cm by Equation 1, the heel cut with changes in the thickness of the heel of the sole body (T _H) and the thickness of the trampling of the sole body (T _B) thickness FIG. 4 shows how the distance (Y) in the vertical direction and the distance ( X ) in the foot length direction of the heel cut change as shown in FIG. It is determined by the means described in 1.

That is, if this is expressed simply, as the thickness of the sole body (12) at the heel increases, the intersection (6)
Moves in the direction of the toe, and the distance X in the direction of the foot length of the heel cut
Becomes longer, and the distance (Y) in the thickness direction of the heel cut becomes longer.

On the bottom surface of the outsole (5) and the surface of the heel cut area (7), that is, the grounding surface, it is possible to form a known uneven pattern, corrugated pattern, or other arbitrary pattern on demand. is there.

[0012]

According to the present invention, the heel sole rear edge of the outsole bottom surface of the sole sole body does not touch the ground until the intersection in the outsole bottom surface of the sole sole touches the ground. ,
When the intersection touches the ground and weight is applied to the ground, all of the weight is received by the entire surface of the heel cut area provided on the sole of the heel, and the ground contact area is extremely widely dispersed in the ground impact. At the same time, the frictional resistance against the ground increases and has a preventive effect such as slipping, and the stress applied to the competitor's feet during the competition is such that the ground reaction force action point moves from the first arrival point to the heel cut area Since the distance between the ground reaction force vector starting from the ground reaction force acting point and the center point of the ankle joint, that is, the moment arm, is shortened, there is an effect of reducing stress on muscle groups around the ankle joint.

[0013] In addition, if the formula 1 is used, the heel cut area is determined according to the change in the thickness of the sole of the shoe, depending on the structure of the sports shoe. Can be formed by using a shoe buffing machine or the like to form an optimal heel cut area, which has the effect of contributing to an improvement in competitive power.
Further, the present invention can be used for everyday shoes other than shoe soles of sports shoes and has the same effect.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a relationship between a foot at the time of landing while wearing sports shoes and running, and a shoe sole of the sports shoes.

FIG. 2 is a plan view of the sole of the sports shoe of FIG. 1;

FIG. 3 is a schematic view of a heel cut shape defining element in FIG. 1;

Figure 4, in the case of a runner's foot length 26.0cm, heel cut with changes in the thickness of the heel of the sole body (T _H) and the thickness of the trampling of the sole body (T _B) The drawing which shows the situation of the change of the distance ( X ) of the thickness direction (Y) and the distance ( X ) of the foot length direction of a heel cut.

[Explanation of symbols]

1 Foot 2 Calcaneus 3 Bottom point 4 Landing speed direction line 5 Outsole bottom surface 6 Intersection 7 Heel heel cut area 8 Front edge line 9 Last center line 10 Heel center line 11 Heel cut angle 11A Landing angle 12 Shoe sole body 13 Upper Covered B Ground C Heel sole trailing edge C1 Heel sole trailing edge D Ground reaction force vector without heel cut D1 Ground reaction force vector with heel cut E Moment arm without heel cut E1 Moment with heel cut Arm F Ground reaction force action point during heel cut F1 Ground reaction force action point during heel cut X Ankle center point α Angle between the heel bone collision velocity vector when touching the ground and the ground θ On the bottom of the outsole when touching the ground angle T thickness of _F heel of adipose tissue T _H the thickness of the trampling of the thickness T _B sole body of the heel of the sole body L calcaneus lowest point with the ground and mother趾球Foot length direction of the distance X _O calcaneus lowest point and the sole body rearmost distance foot length direction of the distance X heel cut foot length direction of the Y heel thickness direction of the distance of the cut between the point

Claims (2)

(57) [Claims] 1. A sports shoe in which an upper made of an arbitrary material and a sole made of an arbitrary material are integrally formed by bonding, sewing, or other means. When the heel sole trailing edge (C), which extends the outsole bottom surface (5) of the main body (12) in the heel direction, lands first, the lowest point of the calcaneus (2) of the foot (1). 3) Landing speed direction line (4) acting on the ground (B)
Intersection (6) at the position where the bottom of the outsole (5) intersects
When the range from the intersection (6) to the heel sole rear edge (C) is formed as a heel cut area (7) and the heel sole rear edge (C1) is formed, the heel cut angle (11) is changed to the landing angle ( 11A) The sole of a sports shoe characterized by being equal to 11A). 2. A front edge line (8) of a heel cut area (7) intersecting an intersection (6) on an outsole bottom surface (5) of the sole body (12) with respect to a last center line (9). 2. The sole of a sports shoe according to claim 1, wherein the sole is perpendicular to the sole.