JPH0736711U - Toecaps for safety shoes - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a toecap for a safety shoe that is excellent in strength, lightweight, and inexpensive. [Structure] A resin or fiber reinforced resin 2 is entirely formed, and a reinforcing metal member 3 is disposed on a part or all of the inner surface of the resin or fiber reinforced resin 2 to integrate the metal member 3 with the resin or fiber reinforced resin 2. It is characterized by becoming.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in a toecap for safety shoes.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, safety alloy toecaps made of aluminum alloy, GFRP (glass fiber reinforced plastic) or CFRP (carbon fiber reinforced plastic) have been known for their weight reduction.

[0003]

[Problems to be solved by the device]

 However, in the case of aluminum alloy, since the aluminum alloy plate is press-formed, the thickness distribution of the toecap becomes uniform, and the thickness cannot be optimized, and the weight reduction effect is small. is there. In addition, GFRP and CFRP products are divided into two types, injection-molded products and laminated heat-molded products using prepreg sheets, but the injection-molded products have the advantage that they can have any shape. On the other hand, there are problems in that the fibers contained in the manufacturing method are short, they have a drawback in impact resistance, and they are significantly inferior to steel in terms of strength. Further, the laminated hot-molded product using a prepreg sheet etc. has a sufficiently long fiber and is excellent in strength and impact resistance, but the fiber may protrude from the surface of the toecap, and the fiber may be stabbed by an operator. There is a problem that there is a large variation in strength due to the direction of the fibers, non-uniform orientation of the fibers, etc., and there is also the problem that the cost increases.

The present invention has been made in view of the above circumstances, and in addition to being lightweight, it is excellent in strength and impact resistance, and can prevent a worker from being stabbed by a fiber. The purpose of the present invention is to provide a toecap for safety shoes that can be

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is formed entirely of resin or fiber reinforced resin, and a reinforcing metal member is disposed on a part or all of the inner surface of the resin or the resin or fiber. It is characterized by being integrated with a reinforced resin.

[0006]

[Action]

 With the above configuration, the resin or fiber reinforced resin and the metal member that is the reinforcing member are integrally molded, so that the weight can be reduced, the strength can be excellent, and the cost can be reduced.

[0007]

【Example】

 An embodiment according to the present invention will be described below with reference to the drawings. 1 is a sectional side view of a first embodiment according to the present invention, FIG. 2 is a sectional side view of a second embodiment according to the present invention, and FIG. 3 is a sectional side view of a third embodiment according to the present invention. Is a bottom view of the fourth embodiment according to the present invention, FIG. 5 is a sectional view taken along the line CC of FIG. 4, and FIG. 6 is a sectional view taken along the line DD of FIG.

In FIG. 1, the toe core 1 is entirely formed of resin or fiber reinforced resin 2, and a metal member 3 made of a light metal such as an aluminum alloy for reinforcement is provided on almost the entire inner surface thereof. The metal member 3 and the resin or fiber reinforced resin 2 are integrated. This molding is an insert molding method in which the metal member 3 is mounted on the injection molding die and then the resin or the fiber-reinforced resin 2 is injected. Therefore, the wall thickness of the toecap 1 can be manipulated arbitrarily. Further, since the low impact resistance of the resin can be complemented by the metal member 3, as a result, the weight of the toecap can be reduced more than ever before, and it is possible to improve the safety shoe design and improve the wearing comfort.

In the example shown in FIG. 2, the toecap 4 is entirely formed of FRP 5, and an aluminum alloy 6 for reinforcement is provided on a part (about half) of the inner surface of the toecap 4, and these 5 and 6 are It is integrated. In the example shown in FIG. 3, the toe core 7 is entirely formed of FRP 5, and the reinforcing wire netting 8 is disposed on almost the entire inner surface of the toe core 7, and these 5 and 8 are integrated. . In the example shown in FIG. 4, the toecap 9 is entirely formed of FRP 5, and a reinforcing aluminum 10 having a large number of holes 10a formed in a part of the inner surface thereof is arranged. Are integrated. It is needless to say that the embodiment shown in FIGS. 2 to 4 also has the same effect as the effect described in the embodiment of FIG.

Table 1 below shows a table comparing the present invention product and the conventional product.

[0011]

[Table 1]

As is clear from this table, it is understood that the product of the present invention is excellent in strength and can be reduced in weight.

[0013]

[Effect of device]

 As described above, according to the present invention, since the resin or fiber reinforced resin and the metal member as the reinforcing material are integrally molded, the weight can be reduced, the strength can be improved, and the cost can be reduced. it can. In addition, it is possible to improve the safety shoes design and improve the wearing comfort.

[Brief description of drawings]

1A is a sectional side view of a first embodiment according to the present invention, and FIG. 1B is an enlarged sectional view of a portion A of FIG.

FIG. 2 is a sectional side view of a second embodiment according to the present invention.

3A is a sectional side view of a third embodiment according to the present invention, and FIG. 3B is an enlarged sectional view of a B portion of FIG. 3A.

FIG. 4 is a bottom view of a fourth embodiment according to the present invention.

5 is a cross-sectional view taken along the line CC of FIG.

6 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1, 4, 7, 9 Toecap 2 Resin or fiber reinforced resin 3 Metal member 5 FRP 6 Aluminum alloy 8 Wire mesh 10 Aluminum 10a Hole

Claims (1)

[Scope of utility model registration request] 1. A resin or fiber reinforced resin is formed entirely, and a reinforcing metal member is provided on a part or all of the inner surface of the resin to integrate the metal member with the resin or fiber reinforced resin. Toecap for safety shoes, which is characterized by