JPS5832651Y2 - Insole for preventing stepping on shoes - Google Patents

Description

[Detailed explanation of the idea] This invention relates to safety shoes, particularly shoes for preventing tripping.

More specifically, the present invention relates to an improvement of the insole for this anti-stepping shoe.

Conventionally, when manufacturing shoes that prevent stepping on the sole from the bottom, a steel plate is inserted into the bottom, but in this case, the steel plate used is one that has been quenched, so it is extremely hard. First of all, it is extremely difficult to process a steel plate into a shape that matches the vertical and horizontal curves of the foot. Therefore, the current state of use is tacit acceptance on this point.

Therefore, when wearing such shoes, walking ability,
They also have drawbacks such as being uncomfortable to wear and therefore causing your legs to tire more quickly.

This is considered to be due to a defect in the shape and structure of the insole for preventing stepping through.

This invention provides a shoe insole for preventing stepping through, which solves these problems.

This idea involves cutting a metal plate into a flat shape that spans the bottom and the inner foot of the foot, making several notches in the part that spans the inner foot of the foot, and using synthetic resin to prevent the stepping-through. Alternatively, it is a shoe insole for preventing stepping-through, which is characterized by being coated and molded with rubber or the like.

Although the punch-through prevention plate according to this invention is made of metal, a steel plate is particularly preferable.

Next, this invention will be specifically explained with reference to the drawings.

Figure 1 shows a plan view of the punch-through prevention plate of this invention, which is a steel plate cut into a flat shape with several notches, and Figure 2 is the same. FIG. 5 is a plan view of a shoe insole for preventing stepping through, which is made by covering and molding a plate with synthetic resin or rubber as shown in No. 5.

Further, FIG. 3 is a side view of a mold for forming the insole for manufacturing the insole, and FIG. 4 is a side view of a concave plate and a curved plate of this mold.

FIG. 5 is a sectional view taken along the line AA' of the center part of the mold for forming the insole shown in FIG. 3, and FIG. It is a diagram.

FIG. 7 is a side view of a shoe that prevents a shoe from being pushed through using the insole of the invention, and FIG. 8 is a sectional view taken along line cc' of the central portion of FIG. 7.

In the figure, numeral 1 is a steel plate cut into a flat shape with a punch-through prevention plate, and numeral 2 is several notches provided in the part of this 1 that extends over the inner shell of the base.

It is preferable to provide a plurality of these cut portions in the horizontal line direction, but depending on the size of the shoe and the like, cut lines other than the horizontal line may be made as necessary.

By providing this notch, it is extremely easy to process the steel plate into a shape that matches the vertical and horizontal curves of the sole of the foot, especially the foot of the foot, for the insole of the shoe to prevent stepping through (3). Ta.

5 is a synthetic resin or rubber, preferably a somewhat hard material.

Preferably, this covers the entire surface of one punch-through prevention plate.

Next, the manufacturing method of the shoe insole for preventing stepping-through according to this invention will be explained for reference.

First, prepare the molds 4 and 4' that can mold the insole 3 of a certain thickness and whose shape matches the last of the foot (in this case, generally means the bottom of the wooden last), and A steel plate 1 cut into a shape determined by the above is wrapped in hard synthetic resin or hard rubber 5 and charged.

■Next, put the upper lid of the mold on top ■Apply pressure (approx. 150 kg/approx.
cm2) (approximately 150°C), and after the hard synthetic resin or hard rubber has solidified, it is removed from the mold.

By the above manufacturing method, the molded insole for shoes to prevent stepping through is maintained in a state where the steel plate 1 is wrapped in the insole 3 of a certain thickness, and the thickness and feel of the insole are In good condition.

In other words, if this insole with a steel plate to prevent stepping-through is used when manufacturing shoes, even if the curve of the steel plate is slightly different from the curve of the last (in this case, meaning the bottom of the last), the thickness of the insole will be It is absorbed and added well, and there is no discomfort caused by the steel plate.

In addition, since the steel plate-containing insole matches the wooden last, it is easier to work in the shoe manufacturing process, which directly leads to improved production. be.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the insole of the insole for preventing treading, and Fig. 2 is a plan view of the insole of the shoe insole made by covering and molding the same board with synthetic resin or rubber as described in 5. FIG. 4 is a side view of the mold for forming the inner sole for manufacturing the sole, FIG. 4 is a side view of the concave plate and curved plate of this mold, and FIG. 5 is the center part A-A of the mold for forming the inner sole in FIG. 3. Figure 6 is a cross-sectional view taken along line B-B' of the central part of the insole of the shoe for preventing stepping through, as shown in Figure 2, and Figure 7 is a cross-sectional view of the shoe for preventing stepping through using the insole of this invention. FIG. 8 is a sectional view taken along line cc' of the central part of FIG. 7. 1... Steel plate for preventing stepping through, 2... Notch, 3... Insole for preventing stepping through, 4.4'...
... Mold for molding the insole of shoes, 5 ... Hard synthetic resin or hard rubber, 6 ... Outsole, 7 ...
... Inner core, 8... Outer skin of the lace, 9... Back skin of the lace, 10... Reinforcement of the lower volume.

Claims (1)

[Scope of utility model registration request] A metal plate shaped to cover the bottom and the inner upper part of the foot is cut into a flat shape, several notches are made in the part that covers the inner upper part of the foot, and the punch-through prevention plate is covered with synthetic resin, rubber, etc. An insole for shoes to prevent stepping through, characterized by a molded insole.