JPH11103903A - Shoes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to obtain a good antislip property regardless of the state of a road surface by providing shoes with outsoles consisting of moldings of a rubber compsn. contg. a silylation agent and/or silane coupling agent and resin spikes fixed to the ground contact surfaces of these outsoles. SOLUTION: The outsoles 100 which are the moldings of the rubber compsn. contain the silylation agent and/or silane coupling agent. As a result, the shoes exhibit a good water repelling property and discharge the water interposed between the road surface and the outsoles 100 to the outside. The good antislip property may be obtd. even if the road surface is either concrete or natural lawn or the road surface is in a wet state. The fixation of the resin spikes 113 to the ground contact surfaces of the outsoles 100 is executed by forming threaded holes to the flat surface within the ground contact surfaces of the outsoles 100, integral forming threaded parts to the resin spikes 1B and screwing the threaded parts of the resin spikes 1B into the threaded holes of the ground contact surfaces of the outsoles.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe, and more particularly to a shoe that can obtain good grip performance on both concrete (asphalt) and natural turf surfaces, and is particularly suitable for use as a golf shoe. is there.

[0002]

2. Description of the Related Art It is necessary for shoes to have excellent anti-slip properties (grip properties) from the viewpoint of good comfort and safety. In golf shoes, shoes are used not only on natural grass but also on concrete or asphalt hard road surfaces in moving paths and rest areas. Therefore, golf shoes need to have good anti-slip properties (grip properties) on any of these different road surfaces. In addition, the slipperiness (grip) of shoes varies depending on whether the road surface is dry (dry) or wet (wet) as well as the type of road surface, so that shoes are better worn. In order to obtain comfort and high safety, it is important that almost the same slip resistance (grip) be obtained whether the road surface is dry (dry) or wet (wet). .

[0003]

For example, in Japanese Utility Model Publication No. 59-27132, urethane or nylon shoe soles (out soles) are formed integrally with a small mountain-shaped projection densely. There has been proposed a shoe sole of a golf shoe in which a spike projecting higher than a small projection is driven to improve the slip resistance. However, when the sole is made of a natural turf having a wet road surface or concrete of a wet condition, good anti-slip properties (grip properties) cannot be obtained. In particular, when the road surface is a natural turf, there is a great difference in the slip resistance depending on whether the road surface is wet or dry, and there is a problem that the player feels very uneasy.

On the other hand, in Japanese Patent Publication No. Hei 6-22482,
There has been proposed a shoe sole of a golf shoe made of vulcanized rubber having divided projections. The shoe sole has good anti-slip properties on a wet concrete surface or asphalt surface, but has a wet natural surface. On turf, the anti-slip property is significantly reduced.

In Japanese Patent Publication No. Hei 6-87806,
There have been proposed shoe soles in which two kinds of truncated cone-shaped projections having different rubber hardness and different projection heights are formed together with a non-slip block body having rubber-like elasticity, but these shoe soles are suitable for surf fishing shoes. On rocky and concrete surfaces, good anti-slip properties can be obtained even when the road surface is dry and wet, but natural turf has a small anti-slip effect.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the present invention has been made on any of concrete (asphalt) and natural turf road surfaces, whether the road surface is in a dry state (dry state) or a wet state (wet state). Condition) regardless of whether it is in the dry state or the wet state when the road surface is a natural turf. I have.

[0007]

According to the present invention, there is provided an outsole comprising a molded article of a rubber composition containing a silylating agent and / or a silane coupling agent. And a resin spike fixed to the ground surface of the outsole.

[0008] In the shoe of the present invention having the above structure, the outsole, which is a molded article of the rubber composition, has a silylating agent and / or
And good water repellency by containing the silane coupling agent, water interposed between the road surface and the outsole is discharged to the outside, and the road surface is wet on both concrete (asphalt) and natural turf road surfaces. Even in the state, good slip resistance can be obtained. In particular, when the road surface is a concrete surface or an asphalt surface, the effect is remarkable. Further, since the resin spikes protrude from the ground surface side of the outsole, the resin spikes penetrate the grass surface regardless of whether the grass surface is dry or wet, so that extremely good slip resistance can be obtained. In the case where metal spikes are protruded, the metal spikes are likely to slip on concrete or asphalt surfaces, and there is a possibility that the slip resistance on these surfaces may be reduced. However, there is no such concern with resin spikes.

The silylating agent is not particularly limited, and a commercially available silylating agent can be used, but a silylating agent comprising a compound represented by the following formula (1) is preferably used. RaSiX _4-a (1) (where a is an integer of 0 to 3, R is -H or -CH
_3, = organic groups such as C ₆ H _5, X is -Cl, -OCH
_3, a hydrolyzable group, such as -OC ₂ H _5. )

As a specific example of such a silylating agent, for example, phenyltrichlorosilane (C ₆ H ₅ SiCl
₃ ), diphenyldichlorosilane [(C ₆ H ₅ ) ₂ Si
Cl ₂ ], isobutyltriethoxysilane [(C ₆ H _{5
Si (OC 2 H 5) 3} ], isobutyl trimethoxysilane _{[(CH 3) 2 CHCH 2} Si (0CH 3) 3], hexyl trimethoxysilane _{[CH 3 (CH 2) 5} Si
(OCH ₃ ) ₃ ], diphenyldimethoxysilane [(C
₆ H ₅ ) ₂ Si (0CH ₃ ) ₂ ]. One or more of these can be used.

A silylating agent other than the compound represented by the above formula (1) can also be used. For example, hexamethyldisilazane [(CH ₃ ) ₃ SiNHSi (CH ₃ )]
₃ ], N, O- (bistrimethylsilyl) acetamide [CH3C (OSi (CH3) NSi (CH3) 3],
tert-butyldimethylchlorosilane [tert-C
₄ H ₉ (CH ₃ ) ₂ SiCl] or the like can be used.

The silane coupling agent is not particularly limited, and a commercially available silane coupling agent can be used. The compound represented by the following formula (2) and / or the following formula (3) It is preferable to use a silane coupling agent comprising a compound represented by the following formula: XSiR (2) (wherein, X is an alkoxy group or a chlorine atom, and R is any one selected from the group consisting of a vinyl group, a glycidyl group, a methacrylic group, an amino group, a mercapto group, an epoxy group, and an imide group. It is one kind.)

Embedded image (In the formula, n is an integer of 1 to 4, and m and k are integers of 1 to 6.)

Specific examples of such a silane coupling agent include, for example, vinyltrimethoxysilane, vinyltriethoxysilane, vinyl-tri (2-methoxyethoxy) silane, vinyltrichlorosilane, and γ-methacryloxypropyltrimethoxy. Examples include silane, γ-methacryloxypropyltriethoxysilane, γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, and bis (3-triethoxysilylpropyl) tetrasulfen. These are one or two
More than one species can be used.

Either one or both of the silylating agent and the silane coupling agent can be used in combination, and when either one or both are used in combination,
1 to 1 per 100 parts by weight of the polymer component in the rubber composition
It is preferable to contain 5 parts by weight (claim 2). When the amount is less than 1 part by weight, the effect of water repellency is hardly sufficiently exhibited, and when the amount exceeds 15 parts by weight, a silylating agent and / or a silane coupling agent precipitates on the surface of the outsole, and the anti-slip property is rather deteriorated. This is because there is a danger.

The above-mentioned silylating agent and / or silane coupling agent can be mixed with the rubber component by various mixers in the same manner as other compounding agents to be compounded in the rubber composition. Further, since the silylating agent and the silane coupling agent are liquid at room temperature, their dispersibility in rubber is very good.

In the present invention, it is preferable to mix silica together with the silylating agent and / or silane coupling agent in the rubber composition. The reason for this is that the addition of silica increases the strength of the rubber, further improves the water repellency, and further improves the slip resistance when the road surface is wet. In this case, the silica is usually the polymer component 10
It is preferable to add 20 to 100 parts by weight per 0 parts by weight (claim 3). This is because when the amount is less than 20 parts by weight, the above effect is not sufficiently exhibited, and when the amount is more than 100 parts by weight, the outsole is hardened, and on the contrary, the slip resistance is reduced and the workability tends to be reduced. is there. Therefore, it is more preferable to mix silica in an amount of 30 to 80 parts by weight, more preferably 35 to 75 parts by weight, per 100 parts by weight of the polymer component in the rubber composition.

The rubber component (polymer component) constituting the rubber composition includes natural rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, acrylonitrile-butadiene rubber (NBR), ethylene-propylene-
Rubber materials conventionally used for producing shoe soles (outsole) such as diene rubber (EPDM), chloroprene rubber, butyl rubber, acrylic rubber, and urethane rubber can be used. These may use not only one kind but two or more kinds of materials.

A filler other than silica can be blended in the rubber composition. For example, when carbon is blended, the abrasion resistance is further improved, and it is also suitable for shoes that perform heavy exercise. Carbon is usually added in an amount of 20 to 100 parts by weight per 100 parts by weight of the polymer component in the rubber composition. The reason for this is that if the amount is less than 20 parts by weight, the effect of improving the wear resistance may not be sufficient. If the amount is more than 100 parts by weight, the outsole becomes too hard, making it difficult to be suitable as an outsole. That's why.

In addition to fillers such as a silylating agent, a silane coupling agent, and silica, a compounding agent conventionally used in the production of outsole can be added to the rubber composition. In the present invention as well, the rubber composition is generally vulcanized and molded, and a vulcanizing agent such as sulfur and a vulcanization aid such as zinc white and stearic acid are blended with the rubber composition. Further, a vulcanization accelerator can be blended. Furthermore, not only vulcanized and unvulcanized but also an antioxidant and a softener (plasticizer) can be blended. The vulcanizing agent is generally 1 to 3 parts by weight per 100 parts by weight of the polymer component in the rubber composition. It should be noted that the compounding amount of any of the above compounding agents may be out of the above range depending on the type of the rubber material used.

The entire outsole is made of a vulcanized molded article of the rubber composition containing the above silylating agent and / or silane coupling agent, and imparts water repellency to the entire contact surface of the outsole. Preferably, the outsole is formed of a vulcanized molded article of a rubber composition containing the above silylating agent and / or silane coupling agent partially, for example, only from the heel portion on the ground contact surface of the outsole or from the toe. Water repellency may be imparted only to the sole part over the back.

The hardness of the outsole is JIS-A hardness (J
(Hardness measured by IS-A type hardness meter) is preferably in the range of 25 to 85. Outsole hardness is JIS-
If the A hardness is less than 25, the outsole becomes too soft and may give a sense of instability. If the A hardness is more than 85, the outsole is too hard and the comfort is poor.

Although the shape of the outsole is not particularly limited, usually, a protrusion for expanding a contact area with a road surface and a groove for improving drainage are formed on a ground contact surface. The size, height, shape, and number of the protrusions, the shape, depth, and number of the grooves are appropriately determined in consideration of the physical properties of the rubber composition.

FIG. 1 shows a ground plane of one embodiment of the outsole of the present invention. The outsole 100 includes a first sole portion 51 supporting the sole of the foot from the toe of the foot, a second sole portion 52 supporting the heel portion of the foot, and an arch portion connecting the first sole portion 51 and the second sole portion 52. 53.

The ground surface of the first sole portion 51 is a flat surface 10
A plurality of truncated pyramid-shaped projections 12 having grooves 11 partially formed in the outer peripheral edge portion are made to protrude, while a plurality of truncated cone-shaped projections 13 are scattered and projected in a substantially central portion. Further, a pair of truncated pyramid-shaped projections 16 are projected at the center. Also, five resin spike attachment portions 14 are provided on the flat surface between the projections 12, 13, 16 at substantially equal intervals. The mounting portion 14 of the resin spike has three protrusions 14a formed so as to surround the circular flat surface 10a, and has a screw hole 14b formed substantially at the center of the circular flat surface 10a. A groove 15 is provided around the mounting portion 14. The above-mentioned projections 12, 13, 16 and 14a are usually flat surfaces 10
The projections are made at almost the same height within a range of 3 to 10 mm.

The ground surface of the arch portion 53 is continuous with the flat surface 10 of the first sole portion 51 and has triangular concave portions 21 and 22 based on the inclined flat surface 20.

The ground surface of the second sole portion 52 is formed by a flat surface 30 located one step higher than the flat surface 20 of the arch portion 53.
Is used as a base to project an island-shaped protrusion 32 having a groove 31 partially formed at the rear end edge thereof.
A protruding portion 33 having a truncated cone shape is protruded at a position close to and at the front end edge. Also, three resin spike attachment portions 34 are provided at substantially equal intervals on the flat surface between the projections 32 and 33. The mounting portion 34 of the resin spike has the same configuration as the mounting portion 14 of the resin spike provided on the first sole portion 51 and has a screw hole 34.
b and three projections 34a surrounding the flat surface 30a. The flat surface 30 is substantially the same height as the flat surface 10 of the first sole portion 51, and the protrusions 32, 33, and 34a are also at the first height.
The protruding portions 12, 13, 16 and 14a of the sole portion 51 protrude at the same height.

On the other hand, resin spikes protruding from the grounding surface of the outsole include polyolefin resin, vinyl chloride resin, AS resin, ABS resin, styrene resin, (meth) acrylic resin, polyamide resin, polyurethane and the like. A thermoplastic resin or a thermosetting resin such as a polyimide resin molded into a desired spike shape using a raw material is used. In particular, thermoplastic resin spikes are preferred because they can be easily formed into a desired shape by injection molding.

The fixing of the resin spike to the grounding surface of the outsole is usually performed by forming a screw hole in a flat surface in the grounding surface of the outsole as in the outsole shown in FIG. The screw portion is formed integrally with the resin spike, and the screw portion of the resin spike is screwed into a screw hole on the outsole ground surface. Of course, other fixing methods may be used. For example, a fitting portion may be formed on the ground surface of the outsole and the resin spike, and both may be fixed with an adhesive interposed between the fitting portions.

It is preferable that the spike made of resin is projected so as to be about 0 to 5 mm higher than the projection formed on the ground surface of the outsole.
If the height is less than 0 mm, that is, if the height of the protrusion of the resin spike is smaller than the height of the protrusion formed on the ground surface on the outsole, the grip force of the resin spike on the road surface (surface) becomes insufficient, and particularly the road surface When the (surface) is a lawn surface, the amount of penetration of spikes is small, and it is difficult to obtain good slip resistance on the lawn surface. On the other hand, if it exceeds 5 mm, when the road surface (surface) is a concrete surface or an aphalt surface, the contact area between the contact surface of the outsole and the road surface (surface) becomes small,
It becomes difficult to obtain good slip resistance.

Although the shape of the resin spike is arbitrary, a spike having a plurality of minute projections is better than a spike having a single large projection. For example, the shape is such that a plurality of minute projections are formed on the grounding surface of the base of the board shape. 2 to 4 show specific examples of the resin spike. Spike 1 shown in FIG.
A is a urethane resin formed by injection molding, and a tapered cylindrical protrusion 61 is provided at the approximate center of the convex contact surface 60a of the disk-shaped base 60, while the contact surface 60a of the base 60 is On the opposite surface 60b, a screw portion 62 is screwed into a screw hole provided in the outsole. The spike 1B shown in FIG. 3 has the same shape as that of FIG. 2 except for the projections. It is protruding. The spike 1C in FIG. 4 has the same shape as that in FIG. 2 except for the protrusions, and the spiral protrusions 64 are formed on the grounding surface 60a formed of the convex surface of the disc-shaped base 60.
Is protruding. FIG. 5 shows the resin spike 1 </ b> B connected to the first sole portion 51 on the ground surface of the outsole 100 of FIG. 1.
And resin spike attachment portion 1 of second sole portion 52
4 and 34 are screwed into the screw holes 14b and 34b) and fixed. Here, the truncated cone-shaped protrusion 63 of the resin spike 1B protrudes 1 mm from the protrusion 14a (34a) on the ground surface of the outsole 100.

[0031]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to embodiments and comparative examples. The kneaded materials having the formulations shown in Table 1 below were prepared, and each kneaded material was placed in an outsole mold and vulcanized at 160 ° C. for 10 minutes to produce outsoles 1 to 11, and Outsole hardness (J
IS A) was measured.

[0032]

[Table 1] In the table, NR is a natural rubber RSS3, BR is a butadiene rubber; BR11 and SBR are styrene butadiene rubbers made by Japan Synthetic Rubber; Nippol NS-210 made by Nippon Zeon, silica is Ultrasil VN3 made by Dexa, and silylating agent 1 is Shin-Etsu Silicone. KBM3103C manufactured by Shin-Etsu Silicone, KBM3063 manufactured by Shin-Etsu Silicone, vulcanization accelerator Noxeller NS manufactured by Ouchi Shinko Chemical Industry, plasticizer Diana Process Oil PW380 manufactured by Idemitsu Kosan, antioxidant Nocrack 200 manufactured by Ouchi Shinko Chemical Industry It is. The numerical values of each material are parts by weight.

Also, kneaded materials having the formulations shown in Table 2 below were prepared, and each kneaded material was placed in a mold for outsole and heated at 160 ° C.
Outsole 12-19 by vulcanization molding under the condition of 10 minutes
Create the hardness of each outsole (JIS
A) was measured.

[0034]

[Table 2] In the table, NR, BR, SBR, silica, plasticizer, and antioxidant are the same as those in Table 1, the silane coupling agent is Si69 manufactured by Degussa, and the vulcanization accelerator (1) is Noxeller manufactured by Ouchi Shinko Chemical Industry Co., Ltd. NS and vulcanization accelerator (2) are Succinol D manufactured by Sumitomo Chemical, and vulcanization accelerator (3) is Noxeller EZ manufactured by Ouchi Shinko Chemical Industry. The numerical values of each material are parts by weight.

Each of the above outsoles 1 to 19 was formed into an outsole having a ground contact surface shown in FIG. In addition, all the protrusions on the ground surface are 5 mm from the flat surface.
Projected to height.

Next, a separately prepared midsole and upper made of foamed EVA were prepared.
For each of Nos. To 19, the midsole was bonded to the outsole, and the upper was further bonded thereon to obtain a shoe form. Further, the spikes (spike A (FIG. 2), spike B (FIG. 3), and spike C (FIG. 4)) shown in FIGS. 2 to 4 and a metal spike (spike) having the same shape as the spike of FIG. D) was prepared. The spikes were screwed to the ground surface of the outsole of a predetermined shoe out of the plurality of shoes produced above, and the spikes were not attached. Shoes and Comparative Examples 1 to 4 shown in Table 4 below
8 shoes completed. In the case where the spike was attached, the tip of the projection of the spike protruded about 2 mm from the tip of the projection formed on the ground surface of the outsole.

For each shoe of the embodiment and the comparative example prepared as described above, a total of 4 pieces of natural grass in dry state, concrete in dry state, natural grass in wet state, and concrete in wet state were given to ten testers. Walking, running, and light exercise were performed on various types of road surfaces, and sensory evaluation was performed on the feeling of use. The evaluation was based on 5 points of feeling of use of the shoes of Comparative Example 7 in which neither a silylation agent nor a silane coupling agent was blended, carbon was used as the filler, and spikes were not fixed to the outsole. ), Each shoe was scored on a 10-point scale by judging the slipperiness (slip-prevention) and non-slipping of each shoe, and evaluated by the average value of the scores of 10 people. The evaluation results are shown in Tables 3 and 4 together with the structure of the shoes.

[0038]

[Table 3]

[0039]

[Table 4]

As shown in Tables 3 and 4, Examples 1 to 16 (where the outsole has water repellency) were compared with the conventional general shoes of Comparative Example 7 (the shoes in which the outsole did not contain a water-repellent substance and the spike was not attached). All shoes containing the substance (silylation agent or silane coupling agent) and attached with resin spikes) were able to obtain high scoring results. In particular, the usability when the road surface is wet has been greatly improved.
It was also found that the feeling of use when the road surface was natural turf was remarkably improved, and that the natural turf was able to obtain almost the same excellent use feeling in both wet and dry conditions.

On the other hand, in Comparative Examples 1 to 3, the use feeling on dry natural turf was improved by the use of resin spikes as compared with Comparative Example 7, but on the natural turf in wet state, the outsole was used. The use feeling was not so improved because water repellency was not obtained. Further, in Comparative Examples 4 and 8, since the outsole contained a water-repellent substance (silylating agent or silane coupling agent) in the outsole, the concrete in a wet state was less slippery and the usability was improved. .
However, in the case of natural grass, the usability was not improved in both the wet state and the dry state. In Comparative Examples 5 and 6, compared to Comparative Example 7, the metal spikes were attached, so that the natural grass in the dry state was less slippery and the usability was improved. ), The concrete in the wet state became slippery, and the feeling of use was greatly reduced.

[0042]

As is apparent from the above description, according to the shoe of the present invention, an outsole made of a molded article of a rubber composition containing a silylating agent and / or a silane coupling agent is used. By fixing the resin spikes to the ground contact surface, good slip resistance can be obtained on both concrete (asphalt) and natural turf road surfaces whether the road surface is dry or wet. Especially,
The resin spikes protruding from the ground surface side of the outsole allow the resin spikes to penetrate the lawn surface even on a dry lawn surface or a wet lawn surface, and extremely good slip resistance can be obtained. Therefore, concrete (asphalt)
On any of the road surfaces of natural grass and natural grass, a stable feeling of use can be obtained regardless of whether the road surface is dry or wet.

[Brief description of the drawings]

FIG. 1 is a plan view of a specific example of an outsole used for a shoe according to the present invention.

FIG. 2 is a perspective view of a specific example of a resin spike.

FIG. 3 is a perspective view of a specific example of a resin spike.

FIG. 4 is a perspective view of a specific example of a resin spike.

FIG. 5 is a diagram showing a state in which the resin spike of FIG. 3 is fixed to the ground surface of the outsole of FIG. 1 along a section taken along line VV of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A, 1B, 1C Resin spike 10 Flat surface 11 Groove 12, 13, 16, 32, 33, 34a Projection part 14b, 34b Screw hole 50 First sole part 51 Second sole part 53 Arch part 62 Screw part 100 Outsole

Claims (4)

[Claims] 1. An outsole made of a molded article of a rubber composition containing a silylation agent and / or a silane coupling agent, and a resin spike fixed to a ground surface of the outsole. And shoes. 2. The silylating agent is a compound represented by the following formula (1), and the silane coupling agent is a compound represented by the following formula (2) and / or a compound represented by the following formula (3). The shoe according to claim 1, wherein said rubber composition contains 1 to 15 parts by weight of said compound per 100 parts by weight of said polymer component in said rubber composition. RaSiX _4-a (1) (where a is an integer of 0 to 3, R is -H or -CH
_3, = organic groups such as C ₆ H _5, X is -Cl, -OCH
_3, a hydrolyzable group, such as -OC ₂ H _5. XSiR (2) (wherein, X is an alkoxy group or a chlorine atom, R is any one selected from the group consisting of a vinyl group, a glycidyl group, a methacrylic group, an amino group, a mercapto group, an epoxy group, and an imide group) Or one type.) (In the formula, n is an integer of 1 to 4, and m and k are integers of 1 to 6.) 3. The shoe according to claim 1, wherein the rubber composition contains 20 to 100 parts by weight of silica per 100 parts by weight of the polymer component in the rubber composition. 4. The resin spike protrudes at the same height as the protrusion formed on the ground surface of the outsole or within 5 mm or less of the protrusion.
The shoe according to any one of claims 4 to 4.