JPH07236503A - Shoe sole - Google Patents

Abstract

PURPOSE:To provide a shoe sole having excellent stability and antislipperiness against back and forth and lateral movements and more particularly the movements 10 a lateral direction. CONSTITUTION:Two lines of curvilinear grooves 12a in a longitudinal direction are formed in a treading part 10a of the shoe sole, and further, two lines of curvilinear grooves 16a, 16b in a lateral direction are formed to intersect with these curvilinear grooves 12a in the longitudinal direction. Patterns 18 of a substantially equal direction are formed in the central part of the region held by the curvilinear grooves 12a in the longitudinal direction. These patterns 18 have the antislipperiness in all directions. Two lines of curvilinear grooves 12b in a longitudinal direction are formed in a heel part 10b and the patterns 18 of the substantially equal direction are formed near the central part of the region held by these curvilinear grooves 12b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to shoe soles.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole suitable for athletic shoes, in particular, for athletic shoes such as tennis and badminton, which are accompanied by intense movement to the left and right as well as the front and rear.

[0002]

2. Description of the Related Art Conventionally, as a sole of an athletic shoe or the like, a sole having a groove extending in the lateral direction of the foot in accordance with the bending of the foot seen when walking is generally used. Such an athletic shoe having a sole having only a lateral groove has a problem that it tends to slip laterally when it is used in an exercise involving intense left and right movements such as tennis and badminton. was there. In order to solve this problem, for example, Japanese Utility Model Publication No. 52-25313 discloses a slip resistant sole having a large number of transverse cuts and a longitudinal groove intersecting a part thereof. This is intended to prevent skidding by the groove edge of the longitudinal groove, but in speedy motion, the frictional force of the groove edge alone is not sufficient to prevent slipping, and therefore a sudden change in direction may occur. At that time, there was a problem that the tension was not strong. FIG. 4 (a) is a schematic plan view of the stepped portion of the shoe sole having the vertical groove 52 with improved lateral sliding, and FIG. 4 (b) is a shoe using the shoe sole in the lateral direction. When you are in a stopped state from a sudden movement,
It is a model sectional view showing the state of the sole. Thus, in the case of a sudden stop, the conventional product supports the stress only by the edges of the sole as shown in FIG. 4 (b), and the improvement of the slip resistance is almost improved as compared with the sole without the vertical groove. I couldn't see it.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a sole suitable for exercise involving not only forward and backward movement but also lateral movement and abrupt direction change, that is, vertical and horizontal movements, particularly lateral movements. It is to provide a shoe sole having excellent stability against movement and slip resistance.

[0004]

The shoe sole of the present invention has at least one longitudinal groove for bending the sole and at least one lateral groove for bending the sole in at least one of the stepping portion and the heel portion. Is formed.

Further, in the shoe sole, at least two longitudinal shoe bending grooves are formed, and a substantially isotropic pattern is formed in a region sandwiched by the shoe bending grooves. It is characterized by being present.

In the present invention, the term "longitudinal direction" means an angle of 0 to 20 ° with respect to the line connecting the toe top part and the midpoint of the boundary line between the stepping part and the heel part in the stepping part. In the heel part, 0 to 20 ° with respect to the line connecting the midpoint of the boundary line between the stepped part and the heel part and the heel top part.
Indicates the direction of the angle. In addition, the lateral direction refers to a direction that forms an angle of 0 to 20 degrees with respect to a line that is orthogonal to the reference line used in the definition of the vertical direction in each of the stepped part and the heel part. Further, the vertical and horizontal shoe sole bending grooves do not necessarily have to be linear as long as they are within the above-mentioned direction, and may have a gentle curved shape.

[0007]

The shoe sole of the present invention has at least one longitudinal groove for bending the sole of the shoe (hereinafter referred to as a bending groove) and at least one lateral bend for at least one of the stepping portion and the heel portion. Since the groove is formed, the shoe bottom bends along the bending groove even when it suddenly stops in either the front or rear direction or the left and right directions, so the floor surface is captured not by the groove line but by the surface of the sole. Since the ground contact surface of the shoe sole is widened, it exhibits excellent stability and anti-slip properties. Further, by forming two vertical bending grooves on at least both sides of the vertical center of the sole, and forming a pattern of substantially equal directions in the region between the bending grooves, the bending grooves formed on both sides are formed. Due to the bending corresponding to the lateral movement of the groove, the contact surface between the sole and the floor is easily formed on both the left and right sides of the sole, and further, the grip of the floor surface due to the substantially equal pattern in the center is provided. Stability is further improved because it covers all directions.

[0008]

The present invention will be described in more detail below with reference to examples, but the present invention is not limited thereto.

The sole of an athletic shoe is usually formed of an elastic material, and its material is natural rubber (NR), polybutadiene rubber (BR), styrene-butadiene copolymer rubber (SBR), ethylene-. Propylene copolymer rubber (ERP), polyisoprene rubber (IR), nitrile rubber (NBR), foamed urethane rubber (PU) and elastic and flexible soft vinyl chloride (PVC), ethylene-vinyl acetate copolymer ( Examples thereof include synthetic resins such as EVA), and these may be used alone or in combination of two or more. Further, depending on the purpose of flexibility, abrasion resistance, impact resistance, etc., these materials can be partially used depending on the portion of the shoe sole.

FIG. 1 is a plan view showing one embodiment of the shoe sole of the present invention. Two vertical bending grooves 12a are formed on the stepping portion 10a of the shoe sole, and each bending groove 12a forms a gentle curve corresponding to the curve of the foot to form the stepping portion 10a. It extends to both sides of the toe top portion 20 from both left and right sides in the vicinity of the boundary with the heel portion 10b. Further, a bending assisting groove 14 is formed adjacent to each of the longitudinal bending grooves 12a and in parallel with the center side of the shoe sole. Further, the stepping portion 10a is formed with two lateral bending grooves 16a and 16b intersecting with the vertical bending groove 12a. The two bending grooves 16a and 16b are not parallel to each other and are formed in a direction corresponding to the bending of the foot.

A pattern 18 having substantially the same direction is formed in the central portion of the area sandwiched by the vertical bending grooves 12a, and the tip of the area, that is, the tip of the toe 20 has a texture on the ground surface. The V-shaped narrow groove 22 is formed with the center in the width direction as the tip. The substantially isotropic pattern 18 includes a prism-shaped convex portion 24 having a square cross section located in the center and a grid-like edge portion 26 partitioning the region.
It has excellent anti-slip properties in both front, rear, left and right directions.

Further, in the region outside the bending groove 12a, in the region 28 in the outer side of the foot, the ground surface is textured to form a lateral narrow groove 30, and the inner side of the foot is formed. Similarly, in the region 32 in the direction, the grounding surface is textured, and diagonal narrow grooves 34 are provided on the front side and vertical narrow grooves 36 are provided on the rear side of the first lateral bending groove 16a. Are formed respectively.

The stepping portion 10a of the step portion 38 at the center of the sole
On the side, narrow grooves 40a, 40b are formed in a V shape in the vertical direction with the tip of the two-row claw tip direction being the tip. On the side of the heel portion 10b, thin grooves 40c and 40d are formed in a V shape in the vertical direction with the tip end facing the direction of the two-row heel end portion. An oblique block pattern 42 is formed in a substantially rhombic area defined by the four vertical narrow grooves 40a, 40b, 40c, 40d.

Further, the heel portion 10b is formed with two vertical bending grooves 12b, and a vertical narrow groove 40e is formed in a region sandwiched by the bending grooves 12b. . In the vicinity of the central portion of the region, that is, in the portion defined by the bending groove 12b formed on the inner side of the foot and the vertical narrow groove 40e, substantially the same direction as the central portion of the stepping portion 10a. The pattern 18 is formed. Rear part of heel 44
Has a grain-like processing similar to that formed on the toe portion 20, and a V-shaped narrow groove 46 having a rear end 44 as a tip is formed. In the region 48 outside the bending groove 12b, the ground contact surface is crevice-processed to form a slanting narrow groove 50.

In the present invention, the vertical and horizontal bending grooves do not necessarily have to be linear, and may have a gentle curved shape like the vertical bending groove 16a of the embodiment. Good.

The depth of the groove for bending is arbitrary as long as the bending can be effectively performed, but in general, the depth of the shoe sole at the convex portion of the pattern 18 in substantially the same direction is 0.45 to 0.45.
It is preferably 0.8 times. If the groove depth is less than 0.45 times, the width of the bending groove will not be wide enough and the shoe sole will not be sufficiently bent when stress is applied. If it exceeds 0.8 times, the groove will be excessive. There is a possibility that it will open too much and the stability will be impaired, and the durability may decrease, which is not preferable. The depth of the bending groove in this example is 2.5 mm at the deepest portion, which is 0.5 times the shoe sole thickness.

The width of the bending groove is such that the distance at the contact portion with the floor surface, that is, the distance between both edges of the bending groove is 2 to 7 m.
It is preferably about m. If it is less than 2 mm, the width of the bending groove is not wide enough, and the anti-slip property provided by the groove becomes insufficient. If it exceeds 8 mm, the groove may be excessively opened and the stability may be impaired. The width of the bending groove of this embodiment is 5 mm.

The cross-sectional shape of the bending groove is flat bottom type, inverted trapezoidal type,
Although it can be arbitrarily selected from a U-shape, a V-shape, etc., from the viewpoint of flexibility, the cross-section is formed by a curved line such as the U-shape as used in this embodiment, or an inverted trapezoidal shape, V-shape. It is preferable that the groove bottom is formed to have a narrow shape like a V shape.

In this embodiment, as described above, the auxiliary bending groove 14 is formed adjacent to the vertical bending groove 12.
The bending auxiliary groove 14 has a groove width in the range of 0.5 to 3 mm and is narrower than the bending groove 12 and has a groove depth deeper than the bending groove 12. This bending assist groove 14
Thus, bending of the shoe sole due to the stress applied along with the lateral movement is effectively performed. The bending width of the bending assisting groove 14 of this embodiment is 1.2 mm and the groove depth is 3.
It is 1 mm.

As described above, the substantially isotropic pattern 18 in this embodiment has the prismatic protrusions 24 having a square cross section located at the center and the grid-like edges 26 partitioning the regions. The pattern is composed of repeating units, and the size of one pattern is 10 mm × 10 mm. In the present invention, the substantially isotropic pattern is a shape having a grip force in substantially all directions when in contact with a floor surface, that is, a shape exhibiting slip resistance in substantially all directions. Refers to a pattern that has. In this pattern, it is not strictly necessary to have the same slip resistance in all directions, but it is preferable to have an edge that substantially exhibits slip resistance against movement in any direction.

There is no particular limitation on the shape and size of the substantially isotropic pattern 18 as long as the pattern 18 exhibits slip resistance against movement in any direction as described above. Figure 2
(A), (b) is a top view which shows the other aspect of the pattern of a substantially isotropic direction. FIG. 2A shows a pattern formed by convex edges in the vertical direction and the diagonal direction.
(B) is a repeating pattern of square edges. Both shapes have anti-slip properties to the front, rear, left and right. Examples of the shape of the pattern include a circle, a square, a rhombus, a lattice shape, and the like, and two or more kinds of these shapes may be combined to form a substantially isotropic pattern. As for size, one pattern is 5mm x 5mm
It is preferably about 15 mm × 15 mm.

The sole of the embodiment shown in FIG. 1 has two longitudinal bending grooves 12a formed in the stepping portion 10a, and substantially equal directions formed in a region sandwiched by the bending grooves 12a. Pattern 18, two lateral bending grooves 16a and 16b, and two vertical bending grooves 12b formed in the heel portion 10b.
By combining the above, it had excellent stability and anti-slip properties even when it was moved in any of the front, rear, left, and right directions or when the direction was suddenly changed.

FIG. 3 (a) is a schematic plan view of the stepped portion of the shoe sole of the present invention, and FIG. 3 (b) is a shoe using the shoe sole of the present invention in a stopped state from abrupt lateral movement. FIG. 7 is a model cross-sectional view showing a state of the shoe sole when worn. As is apparent from FIG. 3 (b), in the sports shoe using the shoe sole of the present invention, when the shoe bottom is bent in the bending groove 12 at the time of a sudden stop in the lateral direction, the bent shoe bottom surface becomes the floor surface. It comes into surface contact with and grips, showing excellent stability and slip resistance. On the other hand, in the conventional product (see FIG. 4) in which the groove 52 is simply provided in the vertical direction,
When most of the bottom of the shoe is in contact with the floor, the anti-slip property of the groove edge is considered to be effective, but in the case of such a sudden stop, stress as shown in Fig. 4 (b) is applied. Since it was supported only by the edges of the sole, there was almost no improvement in the slip resistance compared to the sole without the vertical groove.

Next, another embodiment of the present invention will be described by exemplifying a pattern, but the present invention is not limited to this. 5 (a) to 5 (e) are schematic plan views showing patterns of the vertical bending groove 12 and the horizontal bending groove 16 of the stepping portion 10a, and FIGS.
[Fig. 4] is a schematic plan view showing patterns of a vertical bending groove 12 and a horizontal bending groove 16 of a heel portion 10b. The combination of the stepped part and the heel part is arbitrary.

For example, when the pattern of FIG. 5A is used for the stepping part 10a, the heel part 10b is, for example, as shown in FIG.
Any of the shapes (a) to (e) may be used, and a conventional heel pattern of the shoe sole may be used.

6 (a) to 6 (e) on the heel portion 10b.
If the pattern of the present invention such as
For example, any of the patterns of the present invention as shown in FIGS. 5 (a) to 5 (e) may be used, or the conventional pattern of the stepped portion of the sole may be used.

Regarding the shape of the sole other than the portion where the bending grooves 12 and 16 are formed, for example, in FIG. 5A, the vertical bending groove 12 and the horizontal bending groove 16 are formed as shown in the drawing. And / or in FIG. 6A, the vertical bending groove 12 and the horizontal bending groove 16 are formed as shown in the drawing, and the other region is formed by any conventional pattern. Even if it is used, the effect of the present invention is not impaired.

Further, from the viewpoints of stability and anti-slip property during movement for abrupt direction change, at least two vertical grooves 12a are formed as in the embodiment shown in FIG. 1, and the two vertical grooves are formed. It is preferable that the pattern 18 having substantially the same direction is formed in the region sandwiched by the grooves 12a. The substantially isotropic pattern 18 is preferably formed in the vicinity of the center of the shoe sole in the region sandwiched by the two vertical grooves 12. The substantially isotropic pattern 18 has isotropic property, and therefore, the grip on the floor surface is also good, and the excellent anti-slip property against any movement in the front, rear, left and right directions is provided. Show. The shape and size of the substantially isotropic pattern are as described above.

At least two longitudinal bending grooves 12 and a pattern 18 substantially in the same direction in a region sandwiched therebetween.
Another aspect of the present invention in which the above is formed will be illustrated and described. Figure 7
(A) thru | or (e) are schematic plan views which show the groove | channel 12 for bending of the longitudinal direction of the step part 10a, the formation part of the pattern 18 of a substantially equal direction, and the pattern of the groove 16 for lateral bending. 8A to 8E are schematic plan views showing the vertical bending groove 12 of the heel portion 10b, the formation portion of the pattern 18 in the substantially isotropic direction, and the lateral bending groove 16 pattern. Is. The combination of the stepping part 10a and the heel part 10b is arbitrary, as described in the relationship between FIG. 5 and FIG.

The shoe sole of the present invention exhibits excellent stability in vertical and horizontal movements, particularly lateral movement, and slip resistance, regardless of which of the above-mentioned modes is used. For abrupt stop or change of direction, one vertical bending groove 12 is provided on each side of the shoe sole step portion 10a, and a region substantially sandwiched between the two bending grooves 12 is provided. 7 (a) having a pattern 18 in the same direction in
It is preferable to use the stepped portion as shown in (d) and (e).

[0031]

Since the shoe sole of the present invention has the above-mentioned structure,
Not only in the front-back direction but also in the movement involving a sharp left-right movement or a sudden change of direction, the shoe sole bends through the bending groove and makes a surface contact with the floor surface. It has the effect of excellent stability and slip resistance.

[Brief description of drawings]

FIG. 1 is a plan view showing an aspect of a shoe sole of the present invention.

2 (a) and 2 (b) are plan views showing another embodiment of a substantially isotropic pattern used for the shoe sole of the present invention.

FIG. 3 (a) is a schematic plan view of a stepping portion of the shoe sole of the present invention, and FIG. 3 (b) is a shoe using the shoe sole of the present invention in a stopped state due to abrupt lateral movement. FIG. 8 is a model cross-sectional view showing the state of the shoe sole at that time.

FIG. 4 (a) is a schematic plan view of a stepping portion of a conventional shoe sole having a vertical groove, and FIG. 4 (b) is a shoe using the shoe sole in a stopped state due to abrupt lateral movement. FIG. 7 is a model cross-sectional view showing a state of the shoe sole when worn.

5 (a) to 5 (e) are schematic plan views showing patterns of longitudinal bending grooves and lateral bending grooves of the stepping portion of the shoe sole of the present invention.

6 (a) to 6 (e) are schematic plan views showing patterns of longitudinal bending grooves and lateral bending grooves of the heel portion of the shoe sole of the present invention.

7 (a) to 7 (e) show a vertical bending groove of a stepping portion of a shoe sole of the present invention, a formation portion of a substantially isotropic pattern, and a lateral bending groove pattern. It is a schematic plan view shown.

FIGS. 8 (a) to 8 (e) show vertical bending grooves of the heel portion of the shoe sole of the present invention, formation portions of substantially isotropic patterns, and patterns of lateral bending grooves. It is a schematic plan view.

[Explanation of symbols]

 10a Stepped part 10b Heel part 12, 12a, 12b Vertical bending groove 16, 16a, 16b Horizontal bending groove 18 Substantially isotropic pattern

Claims (2)

[Claims] 1. At least one of the stepping part and the heel part,
A shoe sole, wherein at least one longitudinal groove for bending the sole and at least one lateral groove for bending the sole are formed. 2. A shoe characterized in that at least two longitudinal shoe bending grooves are formed, and a pattern of substantially equal directions is formed in a region sandwiched by the bending grooves. bottom.