JP2002191406A - Detachable shoe sole having peel preventing property and method of manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachable shoe bottom which achieves a peeling preventing performance enough to keep itself from peeling off even when a user walks on exceedingly rugged terrains such as fishing fields. SOLUTION: The shoe bottom made to be detachably mounted on the body of individual shoe is composed of a synthetic rubber and integrally built up with a plurality of parts different in hardness. In other words, a deformation inhibiting part comprising a synthetic rubber with a higher hardness on the side mounted on the body of the shoe and a shoe bottom base part comprising a synthetic rubber with a lower hardness on the side contacting the ground are integrally formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole and a method for manufacturing the same, and more particularly, to a shoe sole having peeling resistance and detachable from a shoe body and a method for manufacturing the same.

[0002]

2. Description of the Related Art Conventionally, shoe soles which are detachable from fishing shoes have been known. This shoe sole is provided with a hook-and-loop fastener on each of the shoe body side and the shoe sole side, and is attached to and detached from the shoe body by the fastener.

However, when such a shoe sole is used as a fishing shoe which is often used for walking a long distance on an uneven terrain such as a rocky surface or in an unstable posture, the shoe sole becomes a shoe sole. From the surface. This is because in such fishing shoes, a load is often applied to an outer peripheral portion, for example, a heel or a toe, rather than a central portion of a shoe sole, and peeling is likely to occur from the outer periphery.

[0004] As a sole for solving such a problem, there is one disclosed in Japanese Patent Application Laid-Open No. 8-140703. In order to prevent the shoe sole from being detached from the shoe body, a reinforcing member is provided in the peripheral portion to increase the rigidity of the peripheral portion.

[0005]

However, the sole of the shoe is
Since the reinforcing member is a separate member, there is a problem that workability is poor and high cost is incurred. Further, when the reinforcing member is a metal wire, there is a drawback that once the metal wire is deformed, it is not restored. If the metal wire is exposed for a long period of time, rust may occur and corrosion may rapidly progress. There was also.

[0006] The present invention has been made under such circumstances,
It is an object of the present invention to provide a detachable shoe sole that does not peel off even when walking on rugged terrain such as a fishing spot and has anti-peeling properties.

Another object of the present invention is to provide a low-cost shoe sole having stable detachability.

It is a further object of the present invention to provide a method for manufacturing a detachable shoe sole having anti-peeling properties without increasing the cost.

[0009]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a shoe sole detachable from a shoe body,
Provided is a detachable shoe sole having anti-peeling properties, wherein a plurality of portions made of synthetic rubber and having different hardnesses are integrally formed.

[0010] In such a shoe sole, since a plurality of portions made of synthetic rubber and having different hardness are integrally formed, deformation is suppressed in a portion having high hardness, whereby the shoe sole peels from the shoe body. Is prevented. Further, since it is made of the same kind of synthetic rubber and there is no need to use a separate member such as a metal, it can be manufactured at low cost. Further, since the whole is made of synthetic rubber, it has flexibility and restorability against local deformation such as bending, impact, and catching, and can be used very suitably for fishing shoes.

As the synthetic rubber used for the sole of the present invention, general-purpose synthetic rubber usually used for footwear can be used. Examples of such a synthetic rubber include styrene-butadiene rubber and thermoplastic elastomer.

Since the hardness of the synthetic rubber is determined by the degree of crosslinking of the rubber by the vulcanizing agent, the hardness can be adjusted by changing the amount of the vulcanizing agent and the vulcanization conditions. .

According to the present invention, in the above-mentioned shoe sole, the deformation suppressing portion made of high-hardness synthetic rubber on the side mounted on the shoe body and the shoe sole base portion made of low-hardness synthetic rubber on the grounding side are integrally formed. A shoe sole characterized by being formed is provided.

Such a shoe sole has a deformation suppressing portion made of high-hardness synthetic rubber on the side to be mounted on the shoe body, so that deformation is suppressed, thereby preventing peeling from the shoe body. Since the shoe sole base portion on the ground side is made of low-hardness synthetic rubber, its cushioning property gives the wearer a comfortable wearing feeling, reduces fatigue, reduces shock applied to the shoe body, and prevents peeling. Also plays a role.

In addition, only low-hardness synthetic rubber constituting the shoe sole base is deformed by stresses in all directions, such as vertical, horizontal and oblique directions, caused by pushing up, catching, etc. applied to the shoe sole base on the ground side. Since the high-hardness synthetic rubber constituting the suppressing portion is not exposed to the ground contact surface, it plays a role of holding the surface fastener for attaching and detaching flat, and as a result, the shoe sole is difficult to peel off from the shoe body.

In the shoe sole according to the present invention, the deformation suppressing portion may have a higher hardness at the outer periphery than at the center. This is because the outer peripheral portion of the shoe sole is a portion that is particularly easily peeled, so that the hardness of the portion is increased. On the other hand, the central portion is a portion that is hardly peeled, so that the hardness does not need to be so high.

The shoe sole of the present invention may have a configuration in which a spike pin is embedded in the surface on the ground contact side. Alternatively, the present invention can be applied to a sole such as a radial sole or a deck sole having no spike pins and having a pattern with large irregularities on the grounding surface. Further, it is also possible to attach a felt to the ground surface.

Further, the present invention relates to a method for producing a shoe sole detachable from a shoe body, comprising the steps of:
The second synthetic rubber compound, which can be vulcanized with a higher degree of crosslinking than the first synthetic rubber compound, is laminated, pressed, and then heated and vulcanized at about 165 ° C. to be attached to the shoe body. A deformation suppressing portion made of high hardness synthetic rubber on the side to be
A method for manufacturing a detachable shoe sole having anti-peeling characteristics, wherein a shoe sole base portion made of low-hardness synthetic rubber on the ground side is integrally formed.

As described above, since the hardness of the synthetic rubber can be changed depending on the amount of the vulcanizing agent and the like, the vulcanization added to the second synthetic rubber compound rather than the first synthetic rubber compound. By increasing the amount of the agent, it is possible to form a high hardness deformation suppressing portion.

As described above, according to the method of the present invention, since the deformation suppressing portion and the shoe sole base can be integrally formed, a detachable shoe sole having anti-peeling properties can be obtained at low cost. I can do it.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a side view showing a fishing shoe to which a shoe sole according to an embodiment of the present invention is attached, FIG. 2 is a side sectional view thereof, and FIG. 3 is a bottom view thereof.

In FIG. 1, a shoe sole 2 is
Is attached. Many spike pins 3 are embedded in the bottom surface of the sole 2. As shown in FIG. 2, the shoe sole 2 is attached to the bottom of the shoe body 1 by the hook-and-loop fastener 4. Further, as shown in FIG. 3, the spike pins 3 are uniformly arranged at the front and rear portions except for the central portion (the arch portion).

FIG. 4 shows a shoe sole 2 according to an embodiment of the present invention.
It is sectional drawing which takes out and shows. As shown in FIG. 4, the shoe sole 2 has a base portion 5 in which a large number of spike pins 3 are embedded.
And a deformation suppressing portion 6 to which the hook-and-loop fastener 4 is attached. The base portion 5 and the deformation suppressing portion 6 are usually made of the same kind of synthetic rubber, for example, styrene-butadiene rubber, but the hardness of the synthetic rubber forming the base portion 5 depends on the hardness of the synthetic rubber forming the deformation suppressing portion 6. It is set lower than the hardness. However, it is necessary to have sufficient hardness to hold the spike pins 3.

The base portion 5 and the deformation suppressing portion 6 are integrally formed by being molded and vulcanized at the same time, instead of being joined by an adhesive. Therefore, low-cost manufacturing is possible.

In order to exhibit the function of preventing deformation of the sole, the hardness of the synthetic rubber forming the deformation suppressing portion 6 must be higher than the hardness of the synthetic rubber forming the base portion 5, but it is high over the entire area. It need not be hardness.

FIGS. 5 to 8 are plan views showing various high-hardness regions of the deformation suppressing portion 6. FIG. FIG. 5 shows an example in which the hardness is high over the entire area 7 of the deformation suppressing portion 6.
7 shows an example in which only the peripheral portion 8 is a high hardness region, FIG. 7 shows an example in which the front portion 9 and the rear portion 10 are high hardness regions, and FIG. 8 shows a case in which the peripheral portions 11 and 12 of the front portion and the rear portion have high hardness, respectively. An example of an area is shown below.

Since the sole of the shoe is separated from the shoe body from the peripheral portion, if the deformation of the peripheral portion can be suppressed,
Peeling can be prevented. Therefore, the high hardness region can be limited to the region shown in FIGS.

In order to exhibit both excellent anti-peeling properties and a function as a fishing shoe, it is desirable to increase the difference in hardness (stretchability) between the base portion 5 and the deformation suppressing portion 6.
As a method therefor, on the upper surface or the lower surface of the base portion 5,
For example, a mesh material made of a synthetic resin such as nylon, tetron, polyester, or polypropylene is adhered and arranged on the entire surface or partially.

The shoe sole according to the embodiment of the present invention described above is manufactured, for example, as follows.

First, a first rubber compound for forming a base is poured into a predetermined mold while temporarily holding the spike pins. Fillers and vulcanizing agents have been added to this first rubber compound. Next, a second rubber compound for forming a deformation suppressing portion is poured onto the first rubber compound. The second rubber compound has a higher hardness by vulcanization than the first rubber compound. For example, the amount of the vulcanizing agent added is larger than that of the first rubber compound. It is.

Next, these rubber compounds are molded by pressing and then vulcanized by heating at about 165 ° C. In this way, it is possible to obtain a molded body in which the deformation suppressing portion on the side attached to the shoe main body and the sole base portion on the ground contact side are integrally formed. Finally, a hook-and-loop fastener for attaching to the shoe main body is attached to the upper surface of the deformation suppressing portion, and a detachable shoe sole having peeling prevention properties is completed.

When a felt is provided without embedding a spike pin in the contact surface, the felt is attached to the contact surface after pressing.

[0033]

As described above in detail, according to the present invention, since a plurality of portions made of synthetic rubber having different hardness are integrally formed, deformation is suppressed in the portion having high hardness, Thus, a detachable shoe sole that is prevented from peeling off from the shoe body can be obtained. In addition, since it is made of the same kind of synthetic rubber and there is no need to use a separate member such as a metal, it can be manufactured at low cost, and since the whole is made of synthetic rubber, it is difficult to bend, impact, catch, etc. Flexibility against local deformation,
It has resilience and can be used very suitably for fishing shoes.

[Brief description of the drawings]

FIG. 1 is a side view showing a fishing shoe to which a shoe sole according to an embodiment of the present invention is attached.

FIG. 2 is a side sectional view showing a fishing shoe to which a shoe sole according to one embodiment of the present invention is attached.

FIG. 3 is a bottom view showing a fishing shoe to which a shoe sole according to one embodiment of the present invention is attached.

FIG. 4 is a sectional view showing the shoe sole according to the embodiment of the present invention.

FIG. 5 is a plan view showing a high hardness region of the deformation suppressing unit.

FIG. 6 is a plan view showing a high hardness region of the deformation suppressing unit.

FIG. 7 is a plan view showing a high hardness region of the deformation suppressing unit.

FIG. 8 is a plan view showing a high hardness region of the deformation suppressing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Shoe body 2 ... Shoe sole 3 ... Spike pin 4 ... Surface fastener 5 ... Base part 6 ... Deformation suppression part 7,8,9,10,11,12 ... High hardness area

Claims (4)

[Claims] 1. A detachable shoe sole which is detachable from a shoe body and which is made of synthetic rubber and is formed integrally with a plurality of portions having different hardnesses. Possible soles. 2. A deformation-suppressing portion made of high-hardness synthetic rubber on the side to be mounted on the shoe body and a shoe sole base portion made of low-hardness synthetic rubber on the grounding side are integrally formed. The shoe sole according to claim 1, wherein 3. The shoe sole according to claim 2, wherein the deformation suppressing portion has an outer peripheral portion having a higher hardness than a central portion. 4. A method for producing a shoe sole detachable from a shoe body, comprising a vulcanizable composition having a higher degree of crosslinking on a first synthetic rubber compound than the first synthetic rubber compound. The synthetic rubber compound of No. 2 is overlaid, pressed, then heated and vulcanized to form a deformation suppressing portion made of high hardness synthetic rubber on the side attached to the shoe body and a low hardness synthetic rubber on the grounding side. A method for producing a detachable shoe sole having anti-peeling properties, wherein the shoe sole base part is formed integrally.