JPS6363402A - Ground contact sole for footwear - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention can be used for rubber or synthetic resin ground soles of work footwear such as underground tabs and boots, or athletic shoes, and is particularly applicable to ground soles made of rubber or synthetic resin. This invention relates to a ground-contacting sole suitable for footwear for people working at heights who work while sensing the soles of their feet.

(Prior Art) Footwear for people working in high places, especially underground tabs, must not only be difficult to slip, but must also convey the condition of the ground to the soles of the feet in order to prevent falls and other safety issues. For this reason, footwear for this purpose has conventionally used a ground sole molded from appropriately flexible rubber or synthetic resin, and its wall thickness has been made thinner than that of athletic shoes.

Thin rubber or synthetic resin ground soles convey the condition of the ground to the soles of your feet, but if they wear out a little, they can become unusable (or they can become easily damaged by small sharp protrusions on metal, glass, etc.). This can cause damage to the feet, which can be dangerous.This problem can be solved by increasing the thickness of the ground sole, but this hardly transmits the presence of small irregularities on the ground to the soles of the feet.

(Problems to be Solved by the Invention) It is an object of the present invention to provide a ground-contacting sole that can convey the presence of small irregularities on the ground to the soles of the feet, has a thick wall, and is made of high-hardness pieces.

(Means for solving the problem) A large number of pieces of rubber or synthetic resin, which are harder than the material of the ground sole body, are placed at appropriate locations on the ground sole body made of flexible rubber, synthetic resin, or foam thereof, and spaced apart from each other. What is the feature of placing and embedding? 'be.

This will be explained below based on the drawings.

FIG. 1 is a cross-sectional view of a portion of the ground-contacting sole of the present invention, showing deformation due to ground irregularities. When the flexible ground sole main body 4 is deformed by the pressure from the feet sh and the high hardness rubber or synthetic resin piece 3 catches the concave portions 1 and convex portions 2 of the ground, these are hard and do not deform much. Therefore, the shape of the ground is directly transmitted to the soles of the feet.

On the other hand, the conventional rubber or synthetic resin grounding sole shown in Fig. 2.3 has hardness in Fig. 2L and zy for the same concave and convex portions. The ground bottom sheep is also electric. Yes, there is.

It is difficult to convey information about the unevenness of the ground to the soles of the feet.

(Example) Next, as an example of the present invention, an application to a rubber ground sole of rubber work shoes will be shown. FIG. 4 shows the entire bottom surface.

FIG. 5 is a sectional view thereof.

A large number of high-hardness rubber pieces 3 having a rubber hardness of 70 or more are arranged on a bottom body 4 made of flexible rubber with a rubber hardness of 40 or less.

In the embodiment, the shape of the rubber piece is cylindrical and has a recess 5 around the periphery to prevent the rubber piece from falling off, but other shapes may be used. About the distribution of true hardness rubber pieces 3 on the rubber sole In this embodiment, cylindrical high hardness rubber pieces with two types of diameters, large and small, are used. The small unevenness of the ground is clearly conveyed, and the force of each individual heel is transmitted to the ground well. A large-diameter high-hardness rubber piece 3b is placed at the middle of the rubber sole and at the rear, and a heel part 30 is placed so that small irregularities on the ground do not affect the feet too much, making it comfortable to wear. In this way, the shape and distribution of the high-hardness rubber pieces can be changed in the ground sole, making it possible to create a variety of ground soles tailored to the intended use of the shoe.

In addition to the above-mentioned embodiments, the grounding sole of the present invention can be made of any of these sponges.

FIG. 6 is an enlarged cross-sectional view of a portion of the rubber grounding sole in another embodiment. Here, the high hardness rubber piece 3 is completely embedded in the flexible rubber sole main body 4, so there is no fear of it falling out.

(Effects of the invention) The thick wall thickness and numerous pieces of high-hardness rubber and synthetic resin prevent damage to the ground sole from small sharp protrusions, nails, etc., which in turn prevents damage to the feet, and is flexible enough to smooth over small irregularities on the ground. It is possible to obtain a grounding sole that conveys contact with the soles of the feet, making it more durable and safer than conventional products.

[Brief explanation of drawings]

FIG. 1 is a partially sectional view showing the grounding state of the grounding sole of the present invention. FIGS. 2 and 3 are partially sectional views showing the state of the conventional grounding sole in contact with the ground. FIG. 4 is a diagram of the ground plane of the ground sole as an embodiment of the present invention. FIG. 5 is a cross-sectional view of the ground plane 0A-A'' shown in FIG. 4. FIG. 6 is a partial cross-sectional view of the ground bottom as another embodiment of the present invention. 1. Ground recess , 2~・Ground convex part, 3- High hardness rubber or synthetic resin piece, 3a - High hardness rubber piece with small diameter, 3b - High hardness rubber piece with large diameter, 3c - Heel part high hardness rubber piece , 4 - Ground sole body made of flexible rubber or synthetic resin, 5 - Rubber piece hollow. Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6

Claims (1)

[Claims] A large number of pieces of rubber or synthetic resin, which are harder than the material of the ground sole body, are embedded at appropriate locations at intervals in a ground sole body made of rubber, synthetic resin, or a foam thereof that maintains flexibility. A grounding sole for footwear characterized by: