JPS631841Y2 - - Google Patents

Description

[Detailed explanation of the idea] a Industrial application field TECHNICAL FIELD The present invention relates to rubber sole footwear that prevents punctures.

b. Prior art When working at construction sites, etc., dangerous objects such as metal pieces, broken glass, or nails are scattered around, and people often get injured by stepping on these dangerous objects. In order to prevent this danger, rubber-soled footwear with reinforced soles to prevent punctures is used.

Conventionally, rubber-soled footwear that prevents punctures used when working at construction sites and the like has been provided with a metal plate at the bottom of the footwear in order to protect the feet from dangerous objects.
However, since the warpability of the sole of the footwear is reduced, if a strong bending force is applied to the sole, there is a risk that the rubber outsole and the metal plate will separate.

Therefore, footwear is used in which a wavy or serrated uneven portion is formed on the finger side of a metal plate to improve the flexibility of the fingertip. (Utility Model Application Publication No. 58-41205) c Problems to be Solved by the Invention However, in such footwear, in order to improve the resistance to stepping on, the metal plate is made sufficiently thick, usually about 1.
If the thickness is 1 mm, the flexibility will decrease and the weight will increase. On the other hand, if the thickness of the metal plate is made thin, there is a risk that nails or the like will penetrate the metal plate, which is dangerous.

This invention was made in view of the above circumstances,
It is an object of the present invention to provide rubber-soled footwear that improves punch-through resistance and has sufficient flexibility.

d Means for Solving the Problems In order to solve the above problems, the present invention forms two thin metal plates into a foot shape that does not impair the flexibility of the sole of the footwear, and corresponds to at least the toes of the metal plates. The front part of the metal plate is bent in a wavy or serrated manner in the longitudinal direction to form an uneven surface, and the pitch of the uneven surface of both metal plates is changed, and the metal plate with a narrow pitch of the uneven surface is placed on the upper side. The metal plates with rough pitched surfaces are placed opposite each other on the lower side, and synthetic resin or synthetic rubber is filled between these metal plates to form an insole plate, and this insole plate is installed inside the bottom of the footwear. be.

e. Function: The two thin metal plates formed into the shape of a foot are folded in a wavy or sawtooth pattern in the longitudinal direction of the part that corresponds to the toes, so the sole of the footwear can bend freely. In particular, the pitch of the uneven part of the upper metal plate is finer than that of the lower metal plate, so the bending is smooth. Also, even if a sharp object such as a nail is stepped on, the two metal plates change the direction of the sharp object, preventing stress concentration.

f. Example Hereinafter, an example of the present invention will be described with reference to the drawings.

1 and 2, reference numeral 1 denotes rubber-soled footwear, which includes an outer cover 2 forming the outer shape of the footwear;
A rubber shoe sole 3 provided on the bottom surface, an insole board 4 delivered to the inside of the shoe sole 3, a synthetic resin layer 5 delivered to the top surface of this insole board 4, and a rubber shoe sole 3 provided on the innermost side of the footwear. It is composed of an inner jacket 6 which is The insole plate 4 is made of two metal plates 7 ₁ and 7 ₂ with a thickness of about 0.25 mm formed in the shape of a foot as shown in FIG.
It is composed of a filling layer 8 of 1.2 mm of synthetic rubber or synthetic resin. The metal plate 7 is bent into a wavy or sawtooth shape along the longitudinal direction of the plate surface corresponding to the toe side, and each uneven surface 9
The pitch of the upper metal plate 7 ₁ is smaller than that of the lower metal plate 7 ₂ . A synthetic resin layer 10 is formed on the upper and lower surfaces of the wavy or serrated portion of the insole plate 4, and a protective member 11 is provided around the tip and heel of the footwear.

According to the footwear having the above structure, the tips of the metal plates 7 ₁ and 7 ₂ made of thin steel plates are formed into a wavy or serrated shape, so they have excellent flexibility and are lightweight, so they can be used at work sites, etc. Suitable for walking. In particular, the pitch of the uneven surface 9 of the metal plate 7 ₂ on the upper side is narrow, so
Easy to bend. Even if you step on a dangerous object such as a nail, the nail will be oriented along the corrugated uneven surface of the lower metal plate 7 ₂ and will not hit the metal plate 7 ₂ at right angles, so it will not penetrate through the metal plate 7 ₂ . There is little risk. Even if it were to penetrate through the first metal plate ₇₂ , the friction at the penetration part would act,
Furthermore, the second metal plate 7 ₁ deflects the direction of the nail, so there is no danger of the two metal plates 7 ₁ and 7 ₂ being penetrated at the same time.

g. Effects of the invention As described above, according to the rubber sole footwear of the present invention, two thin metal plates that do not impair the flexibility of the sole are formed into a foot shape, and a metal plate corresponding to the toe side is formed into a foot shape. A wavy or serrated bending process is applied to the longitudinal direction of the plate surface to form an uneven surface, and the pitch of the uneven surface is changed between these metal plates, and
A metal plate with a narrow pitch on the uneven surface is placed on the upper side, and a metal plate with a coarse pitch on the uneven surface is placed on the bottom side, facing each other, and synthetic resin or synthetic rubber is filled between these metal plates to form an insole plate. Since the insole board is installed inside the bottom of the footwear, it is possible to improve the performance of preventing sharp objects such as nails from being pushed through, and
It is lightweight and can maintain superior flexibility.

In particular, since the pitch of the uneven surface of the upper metal plate is finer than that of the uneven surface of the lower metal plate, bending of the toes becomes easier and walking becomes easier.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing rubber-soled footwear, FIG. 2 is a sectional view showing rubber-soled footwear that prevents punctures according to an embodiment of the present invention, and FIG. 3 is an enlarged view of the bottom of FIG. 2. FIG. 1...Rubber sole footwear, 4...Insole plate, 7...Metal plate, 8...Filling layer, 9...Irregular surface.

Claims (1)

[Scope of utility model registration request] Two thin metal plates that do not impair the flexibility of the sole of the footwear are formed into a foot shape, and at least the front portion of the metal plate corresponding to the toes is bent in a wavy or serrated manner in the longitudinal direction to create an uneven shape. In addition to forming a surface and changing the pitch of the uneven surfaces of both metal plates,
A metal plate with a narrow pitch on the uneven surface is placed on the upper side, and a metal plate with a coarse pitch on the uneven surface is placed on the bottom side, facing each other, and synthetic resin or synthetic rubber is filled between these metal plates to form an insole plate. Rubber-soled footwear that prevents punching through, characterized by having an insole board inside the bottom of the footwear.