JPH05199907A - Shoe sole - Google Patents

Abstract

PURPOSE:To provide the shoe sole which assists the natural movement of the foot during walking and running, prevents the excessive internal rotation of the heel of the foot and the excessive external rotation of the tread part of the foot and allows the stretching or contracting state of rubber strips to be seen through the base of the shoe sole. CONSTITUTION:Curved grooves 101, 101... are provided in a short side direction from the front end 1 in the plantar arch part to the rear 2 of the tread part of a foamed midsole body 0. Plural fitting grooves 102, 102... are provided in a longitudinal direction from the front part 00 of the heel to the center 03 of the tread part so as to intersect with these curved grooves 101, 101.... The repulsive and elastic rubber strips 14, 14... are freely stretchably fitted and fixed longitudinally in these fitting grooves 102, 102... to constitute the foamed midsole 1. The plantar arch part of such foamed midsole 1 is constituted of a transparent elastic material and is superposed and adhered, exclusive of the rubber strips 14, 14..., to an outer sole 2 formed with bellows-like ruggedness 23, 23... from the front end 211 of the plantar arch part to the rear end 221 of the tread part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole.

[0002]

2. Description of the Related Art Conventionally, a shoe sole in which a flat plate-shaped shank made of steel is attached from the stepped portion of the shoe sole to the rear portion of the shoe to achieve stability during walking is generally known.

[0003] When the direction is changed during normal normal walking, or due to fatigue of muscle ligaments during walking for a long time, the heel of the foot is pronation or the stepped part of the foot is supination as a natural movement of the foot. To do. In this case, since the forefoot and hindfoot rotate so that they twist, the flat steel shank embedded in this part restrains the twisting of the forefoot and hindfoot, and the foot naturally moves while walking. There was a drawback that the movement was blocked. From this point of view, shoe soles that do not use shanks may be considered, but the pronation of the heel of the foot or the supination of the tread of the foot during walking is not restricted and the foam midsole is partially Excessive supination or supination due to excessive compression, resulting in leg muscles,
It has the drawback of causing damage to the ligaments and joints.

[0004]

SUMMARY OF THE INVENTION The present invention promotes natural movement of the foot during walking and running, and prevents excessive pronation of the heel of the foot and excessive supination of the foot's tread. It is intended to provide a shoe sole that can be seen through the elastic state of the rubber strip from the bottom surface of the shoe sole.

[0005]

In order to explain the present invention with reference to the accompanying drawings, the stepped end portion 01 of the foam midsole body 0 will be described.
The bending groove 10 in the lateral direction from the rear part 02 to the stepping part
1.101 ... are provided, and a plurality of fitting grooves 102.102 ... Are provided in the longitudinal direction from the heel front portion 00 to the stepping central portion 03 so as to intersect the bending grooves 101.101.
2.102 ... a foam midsole 1 in which a repulsive elastic rubber strip 14.14, which is different in color from the main body of the midsole, is fitted and fixed in a stretchable manner in the longitudinal direction, and the above-mentioned repulsive elastic rubber strip. 14.14 ... The non-stepping portion 21 is made of a transparent rubber elastic body, and the non-stepping portion distal end portion 211 to the stepping portion rear end portion of the front bottom portion 20 corresponding to the bending grooves 101.101. 221
The sole of the invention is characterized in that the outer sole 2 having the bellows-like irregularities 23.23 ...

In the present invention, the foam midsole body 0
Is made of rubber foam, EVA, or polyurethane foam. In the present invention, the bent groove 10
1.101 ... May be formed on the upper surface side or the lower surface side of the midsole body 0. The fitting grooves 102.102 ... Are formed on the lower surface side of the foam midsole body 0. The fitting grooves 102.102 ... substantially match the shape of the repulsion elastic rubber strips 14.14 ..., and the repulsion elastic rubber strips 14.14. The rubber strips 14.14 are formed to have a slightly larger cross-sectional shape. And in this invention,
The fitting grooves 10 are formed at the front and rear ends of the fitting grooves 102.102.
2.102 ... Continuing engagement grooves 103.103 are provided, and the repulsion elastic rubber strips 14.14 ... Are integrally connected to the front and the rear thereof to engage the connecting portions 141.141. By engaging and fixing to the grooves 103.103, the repulsive elastic rubber strips 14.14 ... Can be easily fixed to the fitting grooves 102.102. In this case, if a stretch preventive material such as cloth is laminated or embedded in the connecting portion 141.141, the connecting portion 1 when the shoe sole is used
41.141 is prevented from being excessively stretched, and the engaging grooves 103.
It is possible to stably engage and fix the connecting portion 141.141 with respect to 103 over a long period of time.

In the present invention, the outer sole 2 comprises a front bottom portion 20, a step portion 21 and a heel portion 20 ', and the front bottom portion 20, the step portion 21 and the heel portion 20' are integrally formed or adhered to each other to form an outer sole. It is assembled and formed as 2. Front bottom 20 and heel 2
0'is formed of rubber, EVA, vinyl chloride, etc., which are usually used for the shape of the sole of the shoe, and the stepped end portion 211 of the front sole 20 is formed.
Bellows-like unevenness 23.2 from the rear end portion 221 to the stepping portion
3 ... are formed.

In the present invention, the stepless portion 21 of the outer bottom 2 is
It is made of transparent vinyl chloride resin, EVA, polyurethane, or ordinary transparent rubber. Corresponding to the rubber strips 14.14 ... In the present invention, projecting beams 210.210 ... having a convex lens-like cross-section in the lateral direction and oriented in the longitudinal direction should be formed on the ground contact surface side of the stepless portion 21. By the lens effect of the projecting beams 210.210 ..., the rubber strips 14.14 ... can be magnified and seen through from the ground plane side, and the color feeling can be further enhanced.
0.210 ... remarkably reinforces the stepless portion 21, which is advantageous.

The foamed midsole 1 and the outer sole 2 constructed as described above are provided as a sole by laminating them in a conventional manner except for the rubber strips 14.14 ...

[0010]

Since the present invention is constituted as described above, when walking or running while wearing shoes using the sole of the present invention, body weight pressure is applied to the inside of the heel of the sole of the foot. When the heel of the foot is prone, the bending midsole 101.101 formed in the foam midsole 1 according to the movement of the foot and the bellows-like unevenness 23.23 in the outer sole 2 are used as boundaries. -The rear foot part (heel part) and the heel part 20 'of the outer sole, that is,
The inner part of the heel of the shoe sole is compressed more than the outer part,
The heel portion of the sole of the shoe sole tends to incline and twist, and along with this, the repulsion rubber strip 1 that is elastically fitted and arranged in the fitting groove 102 on the inner side of the midsole body 0.
4'is a fitting groove 1 on the outer side of the midsole body 0.
The elastic rubber strip 14 '' arranged at 02 is stretched and bent to a large extent, and the heel portion of the foamed midsole body 0 and the heel portion 20 'of the outer sole, that is, the heel portion of the shoe sole are directed inward. Twisting is allowed, and at the same time, the repulsive rubber strip 14 'that has been greatly stretched is loaded with a larger contraction load than the repulsive rubber strip 14'', and excessive twisting toward the inside of the heel of the shoe sole, that is, excessive Pronation is prevented.

When body weight pressure is applied to the outside of the foot of the foot and the foot of the foot is rotated, the bending grooves 101.101 formed on the foamed midsole according to the movement of the foot and the outside of the foot. With the bellows-like unevenness 23.23 on the bottom as a boundary, the tread portion of the foamed midsole and the tread portion of the outer sole, that is, the tread portion of the shoe sole, tend to tilt toward the outer side. Along with this, the repulsion elastic rubber strip 14 ″ arranged in the fitting groove 102 on the outer side of the midsole body 0 has the repulsion elastic rubber piece 14 ″ arranged in the fitting groove 102 on the inner side of the midsole body 0. It is stretched and bent more than the strip 14 'to allow the outer side of the stepped portion of the sole to twist, and the stretched rubber strip 14''that is also stretched to a greater extent is larger than the repulsive rubber strip 14'. Since the contraction load is applied, the outer side of the foot of the shoe sole Excessive kinking of, namely excessive supination is prevented.

Therefore, in the shoe sole of the present invention, natural movement of the foot is promoted during walking and running, and moreover, excessive pronation of the heel part of the foot and excessive supination of the stepped part of the foot are prevented. ..
Since the elastic rubber strips 14.14 ... are different in color from the foamed midsole body 0, the elastic action of the elastic rubber strips 14.14 ...
It is possible to see through the transparent stepless portion 21 on the outer bottom, and the above-mentioned effects can be visually confirmed, and the appearance is also good.

[Brief description of drawings]

FIG. 1 is a sketch of the shoe bottom of the present invention seen from below.

FIG. 2 is a cross-sectional view of the shoe sole of FIG. 1 taken along the line AA.

3 is a cross-sectional view of the shoe sole of FIG. 1 taken along the line BB.

FIG. 4 is a schematic view of a foamed midsole used in the present invention as seen from below.

[Explanation of symbols]

0. Foam midsole body 00 ... heel front 01 ... stepless tip 02 ... tread rear 03 ... tread center 1. Foam midsole 101 ... Bending groove 102 ... Fitting groove 14.14 '. 14 '' rubber strip 2. Outer bottom 20 ... Front bottom 21 ... Stepless part 211 ... Stepless part front end 221 ... Stepped part rear end 23.23 ... Bellows-like unevenness

Claims (1)

[Claims] 1. A bent groove 1 extending in a lateral direction from a tip end portion 01 of a foamed midsole body 0 to a rear portion 02 of a stepped portion.
01.101 ... are provided, and a plurality of fitting grooves 102.102 ... Are provided in the longitudinal direction from the heel front portion 00 to the stepping central portion 03 so as to intersect the bending grooves 101.101.
02.102 ... a foam midsole 1 in which a repulsive elastic rubber strip 14.14, which is different in color from the midsole body, is fitted and fixed in a longitudinally stretchable manner, and the above-mentioned repulsive elastic rubber strip. 14.14 ... The non-stepping portion 21 is made of a transparent rubber elastic body, and the non-stepping portion distal end portion 211 to the stepping portion rear end portion of the front bottom portion 20 corresponding to the bending grooves 101.101. 22
Outsole 2 having bellows-shaped irregularities 23.23 ...
And a rubber strip 14.14 ... except that the layers are laminated to form a multi-layered shoe sole.