JP3228655B2 - Indoor 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 sports shoes mainly used indoors such as gymnasiums and sports gyms, and more particularly to sports shoes capable of exerting an effective anti-slip action on floor surfaces which are slippery due to moisture. To provide.

[0002]

2. Description of the Related Art In general, floors of sports facilities are made of cherry boards, taraflex, or the like, and the surfaces thereof are formed into very smooth glossy surfaces. Therefore, once the floor gets wet, it becomes very slippery and the competitor is always at risk of falling. Therefore, the competitors and staff are forced to wipe the floor, which hinders the progress of the competition itself.

[0003] In a volleyball game in particular, it is frequently seen that a player or a reserve player wipes a floor wet with sweat with a mop. It can be said that in a fierce competition such as a volleyball competition, the amount of sweat squirting from the whole body of the player is large, or the danger of falling due to that is high. Especially in volleyball competitions involving jumps and complications, if you slip and fall when you land, you will suffer severe anomalies such as sprains and fractures of the ankles and damage to the Achilles tendon and ligaments, and in some cases a large accident that may kill the life of the player There are many cases. Therefore, the competitor must always be nervous on the floor.

Accordingly, a non-slip sole that assumes the floor of a gymnasium as a matter of course has been proposed as the sole of conventional volleyball shoes. However, these soles assume a dry or flat floor, and do not focus on preventing slippage on the floor in wet conditions. By the way, as shoes focused on preventing slippage on a wet floor, so-called deck shoes that are exclusively used in, for example, ships are known. In this deck shoe, a number of waveform cuts called slits are arranged in parallel on substantially the entire bottom surface. In this shoe sole, the block cut during walking is inclined, the inclined block becomes an edge and stands on the floor, and the edge of each block cuts the water film, so that the floor and the sole are directly By contact, sufficient frictional resistance can be obtained.

However, this type of sole has the disadvantage of being generally heavy. This is because this kind of shoe sole has a problem in a manufacturing process when making a cut. That is, when making a cut, usually a corrugated blade is used,
A cut is made by pressing this over the rubber material. At this time, since the rubber plate itself has elasticity, the elasticity acts, and the blade is cut into the rubber plate only after a certain force is applied and the pressing force exceeds a limit. Therefore, if the rubber material is thin, it will not stop at a desired portion and will be cut at once. Therefore, in order to prevent the sole from being completely cut, the sole of the shoe must have a certain thickness. Therefore, such a heavy sole material is not suitable for use as a sole for indoor sports such as volleyball shoes in which jumping power and light footwork are desired.

[0006] Also, when viewed from the structural point of view, there is no groove width due to the notch, so when a shearing force acts instantaneously as in the case of landing when jumping, the blocks strongly support each other and the block falls down well. As a result, there is a problem that the edge does not stand and the anti-slip force cannot be exerted. Further, even when the vehicle lands in a low posture, the vertical load is hardly applied, so that the block does not fall down and the grip force cannot be exerted sufficiently.

[0007] Further, since the direction of the cut is not considered so much, and the hole is merely formed so as to be orthogonal to the longitudinal direction of the shoe sole, the grip force in various directions in the indoor sports involving intense footwork. Could not get.

[0008]

SUMMARY OF THE INVENTION From the foregoing, it is an object of the present invention to provide a shoe sole which is lightweight as an indoor sports shoe sole and which can sufficiently prevent slippage even on a wet floor surface. Is an important task.

[0009]

Accordingly, the present inventors have conducted intensive studies to overcome the deficiencies of the conventional product, and as a result, have adopted the following technical means. That is, the present invention, the toe portion
Approximately 15% of the vertical axis direction toward the heel with the peak as the C region
And the same as in the longitudinal direction in the heel direction from the lower end of the C region.
Within the range of 25% and outside from the inner edge 6 of the sole
A small area surrounded by about 80% in the horizontal axis direction toward the edge 7
At least the region including the thumb ball is defined as region A,
Region C except for the region A and at least the region A
The groove 1 disposed on the shoe sole corresponds to the longitudinal axis PP of the shoe sole.
Are arranged side by side so that the crossing angle θ is between 0 degree and 30 degrees.
Similarly, the groove 1 in the region B has an intersection angle θ of 30 degrees to 90 degrees.
New measures were juxtaposed so as to be in order.

[0010]

The present invention maximizes grip on wet floors
Of the groove that can be exhibited in
It was done.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to typical embodiments shown in the drawings. FIG. 1 is a plan view showing a contact surface side of a shoe sole according to the present invention, and FIG. 2 is a partially enlarged sectional view thereof. Figure 3 shows the condition of the sole when working against the floor
FIG. Figure 4 shows the modified version
It is a plane schematic diagram which shows the contact surface side of a shoe sole.

FIG . 1 shows a shoe sole according to an embodiment of the present invention, in which about 15% of a longitudinal direction toward a heel portion from a toe portion indicating a contact surface side as a vertex is defined as a C region, Similarly, it is enclosed within a range of about 25% of the vertical direction in the heel direction from the lower end of the C region and about 80% in the horizontal direction from the inner edge 6 to the outer edge 7 of the sole. A region including at least the thumb ball is defined as a region A, a region excluding the regions A and C is defined as a region B, and the concave groove 1 provided at least in the region A is at least with respect to the longitudinal axis PP of the shoe sole. Are arranged side by side so that the intersection angle θ is 0 degree to 30 degrees,
Indicates shoe soles juxtaposed so that the crossing angle θ is 30 degrees to 90 degrees.

In the above embodiment, the groove A having a different direction from the other region B is provided in the region A of the peripheral portion including the thumb ball of the sole. That is, the concave groove 1 in the area A further considers footwork such as volleyball competition, table tennis competition, or badminton competition. In other words, when considering the direction of kicking the floor in a moving attack during a volleyball attack or in an instantaneous movement during a receive, the movement of the sole in the left and right direction is more important than the front and rear direction, or table tennis, A groove having a direction different from that of the area B is formed in the area A which is the starting point of the movement (kick) from the left and right footwork in the badminton competition. With such a configuration having both the area A and the area B, it is possible to obtain a shoe sole more suitable as a shoe sole for indoor sports. The region A and the region B each form a wave-shaped concave groove 1, and the intersection angle with the axis PP is:
A straight line passing through the apex of each wave shape is defined as a base axis, and an angle at which the base axis intersects the axis PP is defined as a crossing angle.

As the shoe sole material of the present invention, a rubber to which one or more synthetic rubbers such as natural rubber, styrene-butadiene rubber and butadiene rubber are added, and synthetic resins such as vinyl chloride resin and urethane resin are used.

It is a matter of course that the present invention includes that the concave groove 1 shown in FIG . 1 is formed in a straight line or a curved line. Also drilled in the sole
The recessed groove 1 is provided not only on the entire shoe sole but also on the
Not provided, separated into front and rear treads
Drilling each is naturally included in the present invention. At this time, the hardness of the sole material in the area A is changed from 60 degrees to 85 degrees, or the depth 3 of the groove 1 in the area A is changed to the area B.
It is desirable to make the block 4 in the region A slightly hard to fall down by making it shallower than the depth 3 of. That is, as described above, the region A is a portion that is a starting point of kicking out in footwork over offense and defense and is a portion to which the most force is applied. Is done.

In this embodiment, the JIS A hardness is set to 45 to 80 degrees in the area B, while the JIS A hardness is set in the area A.
The A hardness is set to 60 degrees or more and 85 degrees or less. More preferably, the angle is 50 to 70 degrees in the area B, and 70 to 85 degrees in the area A. If the hardness in the region A is further increased, the bending is undesirably prevented.

FIG . 4 shows an embodiment of a modified type . In a region C, a concave groove 1 is formed in a range of about 15% of a longitudinal direction from a toe to a heel toward a heel. , The intersection angle θ with the axis PP is 45 degrees to 80 degrees, and the depth 3 is made shallower than the depth 3 of the region B, or the hardness of the region B is The higher one is shown. In this way, in a volleyball game, when instantly moving toward the flying ball, the direction of movement of the toe part that kicks out first is considered, and the direction of sliding and the direction of the groove are formed in opposition Thereby, more effective anti-slip properties can be exerted.

By the way, a concave groove formed on the ground contact surface side of the shoe sole
Of the relationship between the width of the groove, the distance between the grooves and the depth, and the anti-slip effect
The explanation is as follows. 1 and 2 (one of FIG. 1)
As shown in the enlarged cross-sectional view of FIG.
A number of grooves are arranged side by side within the range of
The width of the groove itself is in the range of 0.2 mm to 1.0 mm
And set its depth within the range of 1mm to 3mm
Is preferred. In addition, it is usually worn for indoor sports
The hardness of soles used as shoes is approximately JIS A hardness
Degrees in the range of 45 to 75 degrees. Figure 3 shows the floor
FIG. 4 is an example of a cross-sectional view showing a deformed state of a shoe sole acting as
You. For example, stepping right before a jump or after a jump
Looking at the ground contact state, most of the deformation is in the longitudinal direction of the sole
You can see how they work. Figure 3 shows the landing
By the instantaneous shear force in the groove 1
The block 4 falls down and its edge 5 stands on the floor
The water film is cut off and works as an anti-slip effect on the floor surface
It shows the situation. At this time, the hardness of the sole is 45 to 75 degrees
Under the conditions within the range of degree, the width 2 and depth 3 of the groove are
Is not within the range indicated by the above numerical value,
It is difficult to apply anti-slip force to the edge itself without falling down
Is obtained from the experimental results.

[0019]

Since the shoe sole according to the present invention has the above-described structure, it can effectively exert an anti-slip action particularly on the indoor floor, and can be used for table tennis, badminton, handball, basketball, etc. in addition to volleyball. Naturally, it can be effectively implemented for indoor sports.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing a shoe sole contact surface side of the present invention.

FIG. 2 is a partially enlarged cross-sectional schematic view of the shoe sole of the present invention.

FIG. 3 is a partially enlarged cross-sectional schematic view of the shoe sole of the present invention in a deformed state.

FIG. 4 is a schematic plan view showing a contact surface side of a modified shoe sole.

[Explanation of symbols]

 A region B region 1 Groove 2 Groove width 3 Groove width depth 4 Block 5 Edge 6 Inner edge 7 Outer edge

────────────────────────────────────────────────── ─── Continued from the front page Examiner Toshicho Miyazaki (56) References JP-A-3-143935 (JP, A) JP-A-61-22802 (JP, A) Shokai 61-160704 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A43B 1/00-23/30

Claims (3)

(57) [Claims] 1. A region of about 15% of the longitudinal axis toward the heel with the toe as the apex is within a range of about 25% of the longitudinal direction from the lower end of the C area to the heel direction. In addition, a region including at least the thumb ball surrounded by about 80% in the horizontal axis direction from the inner edge 6 to the outer edge 7 of the shoe sole is defined as an area A.
A region B excluding the regions A and C is defined as a region B, and at least the groove 1 provided in the region A has a crossing angle θ of 0 ° to 30 ° with respect to the longitudinal axis PP of the shoe sole. The soles of indoor sports shoes, characterized in that the grooves 1 in the other area B are arranged side by side so that the cross angle θ is also 30 degrees to 90 degrees. 2. The groove 1 in the region A has a depth 3 smaller than the depth 3 in the region B or has a hardness of 6 or less.
The shoe sole of an indoor sports shoe according to claim 1, wherein the hardness is 0 to 85 degrees and the hardness of the region B is 45 to 80 degrees. 3. The groove 1 to be bored in the region C has an intersection angle θ of 40 to 80 degrees and a depth 3 greater than that of the region B, or a hardness of 60 to 85 degrees. The sole of an indoor sports shoe according to claim 1, wherein the sole is a degree.