JP2000023707A - Non-slippery shoesole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve endurance and safety while maintaining high resistance to the slipping of shoesoles. SOLUTION: In this non-slippery outsole, an nonwoven fabric produced by gathering fibers solidly without directivity to be bound to a specified thickness is arranged on a ground bottom 1. This nonwoven fabric has high-hardness particles 2 attached onto the surface of the fibers to prevent the slipping thereof. Moreover, in the shoesole, the fibers of the nonwoven fabric are buried into a flexible synthetic resin foaming material 3 that is elastically deformable under treading and the synthetic resin foaming material 3 has the fibers of the nonwoven fabric having the high-hardness particles 2 attached thereonto exposed to the surface of the bottom. Otherwise, the fibers of the nonwoven fabric are buried into the synthetic resin foaming material 3 as open-cell urethane foam. The high-hardness particles 2 herein used are polishing grains. The polishing grains have sharp angles to accomplish effective prevention of slipping. The use of the foaming material allows the extending of the life as compared with the outsole made of a nonwoven fabric polishing material and enables sustaining of high resistance to slipping for a long time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a non-slip sole used mainly for fishing and frozen roads.

[0002]

2. Description of the Related Art Since fishing travels on a slippery shore with a suspension rod or the like, footwear that does not slip as much as possible is used for safety. Sliding on a rocky shore can be very dangerous. Shoes have been developed that do not specifically slip on the ground sole. Currently, shoes marketed for fishing use felt for the ground sole. Felt is a collection of countless fibers entangled with each other three-dimensionally. The felt-made grounding bottom can move on the rock in a relatively less slippery state as compared with rubber or the like. However, felt is likely to slip when seaweed or moss is clogged between the fibers. In addition, felt has a disadvantage in that fine fibers are worn and durability is reduced.

[0003] To solve this drawback, a shoe sole in which a metal spike is disposed in a felt has been developed (Japanese Utility Model Laid-Open No. 1-126101). The grounding bottom of this structure allows the spikes to bite into cracks in the rocks and the like to prevent slipping. For this reason, it can move so that it may not slip on the uneven shore. However, there is a disadvantage that the slip is very easy to slip on a monolith having no unevenness. Furthermore, if the footwear to which the spikes are fixed has a soft bottom, the spikes may push the soles of the feet locally and cause pain, which may make the footwear uncomfortable. It is necessary to make the bottom hard so that the spike does not deteriorate the comfort. However, shoes with hard soles are difficult to walk due to less deformation of the soles during walking, and cannot be worn comfortably. Further, the bottom cannot be brought into contact with the rock in a large area, and a large number of spikes cannot be gripped by being surely hooked into the concave portion of the rock.

In order to solve this drawback, non-slip soles using a nonwoven fabric for the ground sole have been developed. further,
Shoe soles have been developed in which highly hard particles such as ore powder are attached to the surface of nonwoven fabric fibers to prevent slippage (see Japanese Utility Model Application Laid-Open No. 62-182602 and Japanese Utility Model Application Laid-Open No. 63-4220).
No. 4).

[0005]

The grounding bottoms described in these publications prevent countless high hardness particles adhering to the surface of the nonwoven fabric fiber from coming into contact with the surface of the rock to prevent slippage. Non-woven fibers pressed against the surface of a rock through countless high-hardness particles can reduce slip compared to felt. In addition, high hardness particles, like spikes,
Rather than locally penetrating the rock surface to prevent slippage, countless high-hardness particles contact the rock surface and press the nonwoven fibers against slipping against the rock. For this reason, compared to the ground bottom where the spikes are embedded,
The bottom can be softened to improve comfort.

[0006] However, if the grounding bottom made of nonwoven fabric is soft, there is a problem that the durability is remarkably reduced. This is because the soft non-woven fabric does not make the fibers thin or does not densely gather the fibers. The non-woven fabric used for the grounding bottom is made of a thick fiber, which is further pressed thinly to gather the fibers densely, thereby improving the durability. However, this type of nonwoven fabric is not only hardened and the comfort is lowered, but also the seams and moss may be clogged in the voids of the fibers, and the nonwoven fabrics may easily slip.

[0007] The present invention has been developed to solve such disadvantages of conventional shoe soles. It is an important object of the present invention to provide a shoe sole which can be used as a comfortable cushion as a comfortable cushion, and which is durable and which can be used safely by effectively preventing slip in various use environments. It is in.

[0008]

The non-slip shoe sole according to the present invention is provided with a non-woven fabric 1 formed by gathering fibers three-dimensionally and without any direction and bonding them to a predetermined thickness on the ground sole. Non-woven fabric 1
In this case, the high-hardness particles 2 adhere to the surface of the fiber so as not to slip.

Further, in the shoe sole according to the first aspect of the present invention, the fibers of the nonwoven fabric 1 are embedded in a flexible synthetic resin foam 3 which is elastically deformed when stepped on with a foot. The synthetic resin foam 3 is
On the bottom surface, the nonwoven fabric fibers to which the high-hardness particles 2 are attached are exposed.

In the shoe sole according to the second aspect of the present invention, the nonwoven fabric is embedded in the synthetic resin foam 3 which is an open-celled urethane foam.

Further, the shoe sole according to the third aspect of the present invention uses abrasive grains for the high hardness particles 2. The abrasive grains have sharp corners to effectively prevent slip.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify non-slip soles for embodying the technical idea of the present invention, and the present invention does not specify the soles as follows.

Further, in this specification, in order to facilitate understanding of the claims, the numbers corresponding to the members described in the embodiments will be referred to as "columns of the claims" and " In the column of “Means of the above”. However, the members described in the claims are not limited to the members of the embodiments.

FIG. 1 shows a shoe with a non-slip sole according to an embodiment of the present invention. The sole of the present invention is a surf fishing shoe,
It can be applied to all kinds of footwear that needs to be non-slip, such as mountain boots, ski boots, rubber boots, work shoes, athletic shoes, sandals, and the like.

The sole is fixed to the midsole 4 of the shoe or is detachably mounted so as to be replaceable. The detachable shoe sole has a flange 5 on its upper surface as shown in FIGS.
Is fixed. The sole of the figure has the flange 5 protruding forward and backward. The flange 5 is fitted into a detachable groove 6 provided on the midsole 4 of the shoe. Put the flange 5 in the desorption groove 6,
The shoe sole is attached to the midsole 4. The shoe shown in FIG. 4 has a detachable groove 6 on the bottom surface of the midsole 4 at the front and rear. The desorption groove is
Although not shown, it may be provided on the entire circumference of the insole. An insole having a detachable groove around the entire circumference connects a shoe sole with a flange around it.

The flange 5 is provided by bonding a flexible plate material, for example, a rubber plate, to the upper surface of the shoe sole. A portion of the plate material protruding from the outer periphery of the shoe sole is defined as a flange 5.

The shoe sole has a nonwoven fabric 1 embedded in a synthetic resin foam 3. As shown in FIGS. 1 to 5, the outer shape of the shoe sole is substantially equal to the outer shape of the midsole 4, and is fixed to the bottom surface of the midsole 4. The nonwoven fabric 1 is exposed from the surface of the synthetic resin foam 3 to the bottom surface of the shoe sole. The reason why the nonwoven fabric 1 is exposed on the surface of the synthetic resin foam 3 is that the nonwoven fabric 1 has a high anti-slip effect. Further, as shown in FIG. 5, the non-woven fabric 1 has high hardness particles 2 attached to the surface of the fiber in order to enhance the anti-slip effect.

The nonwoven fabric 1 is formed by gathering fibers three-dimensionally and without directionality and bonding them to a predetermined thickness. The fibers are bonded at the intersections with an adhesive or welded and bonded. It is embedded in the synthetic resin foam 3 without bonding. As a fiber of the nonwoven fabric 1, a plastic fiber such as nylon or polyester, or a natural fiber such as a palm fiber or a hemp is used. Fibers such as plastic fibers and hemp are formed into a three-dimensional crimped shape or a zigzag shape so as to be easily entangled. The zigzag shape is, for example, a shape obtained by bending a fiber into a triangular wave, a rectangular wave, or a sine wave. Since the palm fiber has a crimped shape in three dimensions, it is not necessary to artificially process it into such a shape. Fibers that are easily entangled can be three-dimensionally assembled without directionality.

The non-woven fabric 1 using plastic fibers is
The thickness of the fiber is, for example, about 150 denier. However, the sole of the present invention does not specify the thickness of the plastic fiber. For example, plastic fibers include 10 to 300
Denier, preferably 50 to 200 denier, more preferably 100 to 200 denier is optimal. Natural fibers having a thickness approximately the same as that of plastic fibers are used.

Further, the plastic fiber whose surface is processed into an uneven shape is optimal. In order to make the surface uneven, for example, an adhesive is applied to the surface of the fiber in a non-uniform dot-like manner, or the fiber is partially formed into a shape having a different thickness.

The fibers have the high hardness particles 2 adhered to the surface. The high hardness particles 2 are adhered to the surface of the fiber via an adhesive. Abrasive grains such as alumina and silicon carbide are suitable for the high hardness particles 2. The size of the high hardness particles 2 is set to an optimum value depending on the application.
Those having a mesh of 20 to 400 are preferably used. However, the high-hardness particles 2 may have a mesh size of 60 to 1200 depending on the application. As the adhesive for bonding the high-hardness particles 2, a material for bonding the intersections of the fibers can be used in combination. However, the intersection of the fibers can be bonded by using an adhesive different from the adhesive that adheres the high hardness particles 2.

The synthetic resin foam 3 has flexibility and can be freely deformed by applying a force. Therefore, even if it is on the shoe sole, it bends elastically during walking and does not hinder walking. This is because when walking with shoes on, the feet can be deformed according to the bending of the soles. The sole of this structure has the feature that walking can be maintained smoothly.

The synthetic resin foam 3 is formed by inserting the nonwoven fabric 1 so as to be embedded therein. Synthetic resin foam 3
Is formed into a plate shape so as to embed the nonwoven fabric 1 and cut into the shape of a shoe sole, or the nonwoven fabric 1 is embedded when forming the shape of the shoe sole. The synthetic resin foam 3 has flexibility to be elastically deformed together with the nonwoven fabric 1 when stepped on by foot when walking, for example, open-celled urethane foam,
Use EVA foam, polyethylene foam, flexible polyvinyl chloride foam. Urethane foam and EVA foam are most suitable for the synthetic resin foam 3. This is because they have excellent wear resistance and cushioning properties. However, the shoe sole of the present invention does not specify a synthetic resin foam as the above.

The sole shown in FIG. 5 is manufactured as follows. Abrasive grains are attached to the fibers of the nonwoven fabric 1 as the high hardness particles 2. The abrasive grains are added to the paste-like adhesive, kneaded, and sprayed and adhered to the nonwoven fabric 1. However,
The nonwoven fabric 1 can be immersed in a paste-like adhesive in which an abrasive is kneaded, excess adhesive can be squeezed out, and abrasive grains can be attached to the surface of the fiber.

The mold is opened, and the nonwoven fabric 1 to which the high-hardness particles 2 are adhered is put into the molding chamber. Thereafter, the mold is closed, and a synthetic resin is injected into the molding chamber and foamed.

The synthetic resin foamed inside the mold is cured.

The mold is opened and the nonwoven fabric 1 is taken out of the synthetic resin foam 3 embedded therein.

The non-foamed layer formed on the surface of the synthetic resin foam 3 is removed to expose the fibers of the nonwoven fabric 1 on the surface of the synthetic resin foam 3. Further, the outer shape of the synthetic resin foam 3 is cut into the outer shape of the shoe sole. However, when the outer shape is formed into a shoe sole shape with a mold, it is not necessary to cut the synthetic resin foam.

The above steps show a method for producing a shoe sole without a flange. In the shoe sole with the flange, a plate material to be the flange 5 is bonded to the nonwoven fabric 1 to which the high hardness particles 2 are attached. The nonwoven fabric 1 to which the plate material is adhered is put into a molding chamber of an open mold, a synthetic resin is injected into the molding chamber, and foaming, molding, and curing are performed.

[0030]

EFFECT OF THE INVENTION The non-slip sole of the present invention makes it possible to secure the safety of the sole by making the sole less slippery, to improve the durability and to maintain the anti-slip effect of the sole for a long time and to be used safely. Realize the features that can be achieved. This is because the non-slip sole of the present invention has a structure in which nonwoven fabric fibers are embedded in the synthetic resin foam of the sole. The sole of this structure is reinforced by embedding non-woven fibers in a synthetic resin foam. For this reason, the fibers are not loosened and separated. In addition, using a thin and freely deformable fiber, the fiber can be reinforced with a synthetic resin foam. For this reason, the shoe sole can be made a comfortable cushion, and the wear resistance can be significantly improved.

Although shoe soles using nonwoven fabric abrasives have the disadvantage that they are easy to wear and have poor durability, although they have an anti-slip effect, the shoe soles of the present invention have a high hardness particle formed of synthetic resin foam. A unique structure that embeds a non-woven fabric by adhering a non-woven fabric, and has significantly improved the durability. For this reason, the feature which can maintain the excellent non-slip effect for a long period of time is realized.

Furthermore, since the sole of the present invention is in a state in which the fiber to which the high-hardness particles are attached is held by a synthetic resin foam, the high-hardness particles on the surface of the fiber are formed on the surface of the beach. When the fibers are caught, the fibers are prevented from shifting with the synthetic resin foam. For this reason, many high-hardness particles adhering to the surface of the fiber are brought into contact with the surface of the beach without slipping, and the fiber adhering the high-hardness particle is prevented from moving by the synthetic resin foam. It is also possible to realize a feature that can be held so as not to extremely slip on the surface of a rock or the like.

Further, since the shoe sole according to the third aspect of the present invention uses abrasive grains for the high-hardness particles adhering to the surface of the non-woven fabric, the shoe sole has a very good bite on the surface of a rock or the like, thereby effectively preventing slip. There are features that can be done. This is because the abrasive grains have sharp corners, and these corners increase the resistance at the contact surface and produce a non-slip effect.

[Brief description of the drawings]

FIG. 1 is a side view showing a shoe with a non-slip sole according to one embodiment of the present invention.

FIG. 2 is a side view showing a shoe having a detachable shoe sole according to another embodiment of the present invention.

FIG. 3 is a side view showing a state in which the shoe sole shown in FIG. 2 is detached from the shoe;

FIG. 4 is a bottom view showing the midsole of the shoe shown in FIG. 2;

FIG. 5 is a bottom view of a non-slip shoe sole according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Nonwoven fabric 2 ... High hardness particle 3 ... Synthetic resin foam 4 ... Middle bottom 5 ... Flange 6 ... Desorption groove

Claims (3)

[Claims] 1. A nonwoven fabric (1) formed by gathering fibers three-dimensionally and without directionality and bonding them to a predetermined thickness is provided on the grounding bottom, and a high-density surface is provided on the fiber surface of the nonwoven fabric (1). Hardness particles (2)
In the non-slip sole with the non-slip, the fibers of the non-woven fabric (1) are embedded in a flexible synthetic resin foam (3) that elastically deforms when stepped on with the foot. A non-slip sole with non-woven fibers exposed to the hard particles (2) on the bottom surface of the sole. 2. The nonwoven fabric fiber is embedded in an open-celled urethane foam synthetic resin foam (3).
Non-slip soles described in. 3. The high-hardness particles (2) are abrasive grains.
Non-slip soles described in.