JP3478373B2 - shoes - Google Patents

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 which has good grip performance on both concrete (asphalt) and natural grass 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) in terms of good comfort and safety. In golf shoes, the places where shoes are used are not only on natural grass, but also on hard roads such as concrete and asphalt on moving roads and rest areas. Therefore, it is necessary for the golf shoe to have good slip resistance (grip property) on any of these different road surfaces. Also, not only the type of road surface, but usually the road surface is dry (wet) or wet (wet), the slip resistance (grip) of the shoe changes, so better wearing In order to obtain comfort and high safety, it is important that almost the same slip resistance (grip) is obtained regardless of whether the road surface is dry (wet) or wet (wet). .

[0003]

For example, in Japanese Utility Model Publication No. 59-27132, urethane- and nylon-made shoe soles (outsoles) are integrally formed with mountain-shaped small protrusions, and the shoe soles are A shoe sole of a golf shoe has been proposed in which spikes protruding higher than the small protrusions are driven in to improve slip resistance. However, this shoe sole cannot provide good slip resistance (grip property) when the road surface is made of natural grass whose surface is wet or concrete which is wet. In particular, when the road surface is natural grass, there is a large difference in slip resistance depending on whether it is in a wet state or a dry state, which causes a problem that the player feels very uneasy.

On the other hand, in Japanese Patent Publication No. 6-22482,
Although a shoe sole of a golf shoe made of vulcanized rubber with divided projections has been proposed, the sole has good slip resistance on a wet concrete surface or an asphalt surface, but a wet natural shoe. On grass, the slip resistance is significantly reduced.

Further, in Japanese Patent Publication No. 6-87806,
A shoe sole having two types of frustoconical protrusions with different rubber hardness and protrusion height is proposed together with a rubber-like anti-slip block body. This sole is suitable for surf fishing shoes. On rocks and concrete, good slip resistance can be obtained even when the road surface is dry or wet, but natural grass has a small slip resistance effect.

The present invention has been made in order to solve the above-mentioned problems, and in both concrete (asphalt) and natural grass road surfaces, the road surface is in a dry state (dry state) or in a wet state (wet state). It is an object to provide a shoe that has good slip resistance, regardless of whether it is in a dry condition or a wet condition, when the road surface is natural grass. There is.

[0007]

[Means for Solving the Problems] To solve the above problems
According to the present invention, when a silylating agent is contained,
The outer member is made of a rubber composition molded product containing silica.
Provided separately for the tosole and the ground plane of the outsole.
Made of resin with multiple fixed resin spikes
Offering shoes characterized by having spikes and
It Further, in claim 3, a compound represented by the following formula (2)
Alternatively, and / or Shira which is a compound represented by the following formula (3)
Coupling agent and silica
And an outsole made of a molded body of the rubber composition.
Separate resin spas on the ground
Equipped with resin spikes fixed to each
We provide shoes characterized by.         XSiR (2) (In the formula, X is an alkoxy group or a chlorine atom, and R is vinyl.
Group, glycid group, methacryl group, amino group, mercapto
Selected from the group consisting of a group, an epoxy group, and an imide group.
It is any one kind. ) (C_nH_{2n + 1}O)_Three−Si− (CH_Two)_m-S_k-(CH_Two)_m−Si− (C_nH_{2n + 1} O)_Three                                                             … (3) (In the formula, n is an integer of 1 to 4, m and k are integers of 1 to 6,
is there. )

In the shoe of the present invention having the above structure, the outsole, which is a molded product of the rubber composition, is a silylating agent or /
It also shows good water repellency by containing a silane coupling agent, and the water intervening between the road surface and the outsole is discharged to the outside, making the road surface wet on both concrete (asphalt) and natural grass surfaces. Good slip resistance can be obtained even in the state. In particular, the effect is remarkable when the road surface is a concrete surface or an asphalt surface. In addition, since silica is mixed in the rubber composition, the strength of the rubber is increased, the water repellency is further improved, and the slip resistance when the road surface is in a wet state is further improved. In addition, the multiple resin spikes that are provided separately on the grounding surface side of the outsole make it possible for the resin spikes to bite into the lawn surface when the lawn surface is dry or wet, resulting in extremely good slip resistance. Sex is obtained. When the metal spikes are projected, the metal spikes tend to slip on the concrete or asphalt surface, and the slip resistance on these surfaces may be reduced, but there is no such concern with the resin spikes.

The silylating agent is not particularly limited, and a commercially available silylating agent may be used, but it is preferable to use a silylating agent composed of a compound represented by the following formula (1). RaSiX _4-a (1) (In the formula, a is an integer of 0 to 3, R is -H, or -CH
₃ , an organic group such as ═C ₆ H ₅ , X is —Cl, —OCH
_3, a hydrolyzable group, such as -OC ₂ H _5. )

Specific examples of such a silylating agent include, 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 ] and the like. These can use 1 type (s) or 2 or more types.

It is also possible to use a silylating agent other than the compound represented by the above formula (1), 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.

As described above, the silane coupling agent uses the compound represented by the above formula (2) and / or the compound represented by the above formula (3).

[0013]

Either the silylating agent or the silane coupling agent can be used, or both of them can be used in combination, and either one of them or both of them can be 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 (claims 2 and 4). When the amount is less than 1 part by weight, the water-repellent effect is not sufficiently exhibited, and when the amount is more than 15 parts by weight, the silylating agent and / or the silane coupling agent is deposited on the surface of the outsole, rather reducing the slip resistance. This is because there is a risk.

The above silylating agent and / or silane coupling agent can be mixed with the rubber component in 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 liquids at room temperature, their dispersibility in rubber is very good.

In the present invention, it is preferable to add silica together with the silylating agent and / or silane coupling agent in the rubber composition. The reason for this is that when silica is blended, the strength of the rubber is increased, the water repellency is further improved, and the slip resistance is further improved when the road surface is in a wet state. In this case, silica is usually the polymer component 10
It is preferable to add 20 to 100 parts by weight per 0 part by weight (claim 5). This is because if the amount is less than 20 parts by weight, the above effect is not sufficiently exhibited, and if the amount is more than 100 parts by weight, the outsole becomes hard and the slip resistance tends to decrease, and the processability tends to decrease. is there. Therefore, it is more preferable to add 30 to 80 parts by weight, and more preferably 35 to 75 parts by weight, of silica per 100 parts by weight of the polymer component in the rubber composition.

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

Fillers other than silica can be added to the rubber composition. For example, when carbon is blended, the wear resistance is further improved, and it becomes suitable for shoes that exercise hard. 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 is that if it is less than 20 parts by weight, the effect of improving the wear resistance may not be sufficient, and if it is more than 100 parts by weight, the outsole becomes too hard and it is difficult to be suitable as an outsole. This is because.

In addition to the silylating agent, the silane coupling agent, and the filler such as silica, the rubber composition may contain a compounding agent that has been conventionally used for producing an outsole. Also in the present invention, 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 added to the rubber composition. Further, a vulcanization accelerator may be added. Furthermore, not only vulcanized and unvulcanized, but also an antiaging agent and a softening agent (plasticizer) can be added. 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 outside the above range depending on the type of rubber material used.

It should be noted that the entire outsole is made of a vulcanized molded product of a rubber composition containing the above-mentioned silylating agent and / or silane coupling agent to impart water repellency to the entire grounding surface of the outsole. Preferably, the outsole is partially composed of a vulcanized molded product of a rubber composition containing the silylating agent and / or the silane coupling agent, and for example, only the heel portion on the ground contact surface of the outsole or the toe Water repellency may be partially imparted only to the sole portion extending over the instep.

The hardness of the outsole is JIS-A hardness (J
The hardness measured by an IS-A hardness meter) is preferably in the range of 25 to 85. The hardness of the outsole is JIS-
If the A hardness is less than 25, the outsole may be too soft and may give a feeling of instability, and if it is more than 85, the outsole may be too hard and the wearing comfort may be deteriorated.

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

FIG. 1 shows a ground plane of an embodiment of the outsole of the present invention. The outsole 100 includes a first sole portion 51 that supports the instep portion from the toes of the foot, a second sole portion 52 that supports the heel portion of the foot, and an arch portion that connects the first sole portion 51 and the second sole portion 52. It consists of 53.

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

The ground contact surface of the arch 53 is continuous with the flat surface 10 of the first sole portion 51, and is provided with triangular recesses 21 and 22 on the basis of the inclined flat surface 20.

The ground contact surface of the second sole portion 52 is a flat surface 30 located at a position higher than the flat surface 20 of the arch portion 53.
Of the island-shaped protrusion 32 having a groove 31 partially formed at the rear end of the island-shaped protrusion 32.
A truncated cone-shaped projection 33 is projected at a position close to the front end edge. Further, three resin spike attachment portions 34 are provided on the flat surface between the protrusions 32 and 33 at substantially equal intervals. The resin spike attachment portion 34 has the same structure as the resin spike attachment portion 14 provided in the first sole portion 51, and the screw hole 34
It has three protrusions 34a surrounding b and the flat surface 30a. The flat surface 30 has substantially the same height as the flat surface 10 of the first sole portion 51, and the protrusions 32, 33, 34a also have the first height.
The protrusions 12, 13, 16 and 14a of the sole portion 51 project 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, etc. A material obtained by molding a thermoplastic resin or a thermosetting resin such as a polyimide resin into a desired spike shape is used. In particular, a spike of a thermoplastic resin is preferable because it can be easily molded into a desired shape by injection molding.

The fixing of the resin spike to the ground plane of the outsole is usually performed by forming a screw hole on a flat surface in the ground plane of the outsole as in the outsole shown in FIG. This is performed by integrally forming a threaded portion on the resin spike and screwing the threaded portion of the resin spike into the 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 grounding surface of the outsole and the resin spike, and an adhesive agent may be interposed in the fitting portion to fix the two.

It is preferable that the protrusion height of the resin spike is higher by about 0 to 5 mm than the protrusion formed on the grounding surface of the outsole. (The reason for this is as follows.
If it is less than 0 mm, that is, if the protruding height of the resin spike is smaller than the height of the protrusion formed on the grounding surface of the outsole, the grip force of the resin spike on the road surface (surface) becomes insufficient, especially on the road surface. When the (surface) is a grass surface, the bite amount of spikes becomes small, and it becomes difficult to obtain good slip resistance on the grass surface. On the other hand, if it exceeds 5 mm, the contact area between the grounding surface of the outsole and the road surface (surface) becomes small when the road surface (surface) is a concrete surface or an asphalt surface.
It becomes difficult to obtain good slip resistance.

The shape of the resin spike is arbitrary, but a spike having a plurality of minute protrusions is preferable to a spike having a single large protrusion. For example, it has a shape in which a plurality of minute projections are formed on the grounding surface of the board-shaped base. 2 to 4 show specific examples of resin spikes. Spike 1 shown in FIG.
A is a urethane resin formed by injection molding. A tapered columnar projection 61 is provided at the approximate center of a grounding surface 60a consisting of a convex surface of a disk-shaped base 60, while the grounding surface 60a of the base 60 is The opposite surface 60b is provided with a threaded portion 62 projecting from a threaded hole formed in the outsole. The spike 1B shown in FIG. 3 has the same shape as that of FIG. 2 except for the protrusions, and is composed of a convex surface of a disk-shaped base portion 60 and a plurality of minute truncated cone-shaped protrusions 63 at the peripheral edge of the grounding surface 60a. It is protruding. The spike 1C of FIG. 4 has the same shape as that of FIG. 2 except for the protrusion, and the spiral protrusion 64 is formed on the ground contact surface 60a formed by the convex surface of the disk-shaped base 60.
Is protruding. FIG. 5 shows the resin spike 1B as the first sole portion 51 of the ground contact surface of the outsole 100 of FIG.
And mounting portion 1 for resin spike of second sole portion 52
4, the screw holes 14b and 34b of 34 are screwed and fixed. Here, the truncated cone-shaped protrusion 63 of the resin spike 1B is projected by 1 mm from the protrusion 14a (34a) of the ground surface of the outsole 100.

[0031]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail below with reference to embodiments and comparative examples. A kneaded product having the formulation shown in Table 1 below was prepared, and each kneaded product was put in a mold for an outsole and vulcanized and molded under conditions of 160 ° C. for 10 minutes to prepare outsoles 1 to 11. Outsole hardness (J
ISA) was measured.

[0032]

[Table 1] In the table, NR is natural rubber RSS3, BR is butadiene rubber; BR11 made by Japan Synthetic Rubber; SBR is styrene butadiene rubber; NIPPON NS-210 made by Zeon Corporation; Ultrasil VN3 made by DEXA; silica; KBM3103C manufactured by Shinetsu Silicone as silylating agent 2, KBM3063 manufactured by Shin-Etsu Silicone, Noxeller NS manufactured by Ouchi Shinko Chemical Industry Co., Ltd. as plasticizer, Diana Process Oil PW380 manufactured by Idemitsu Kosan Co., Ltd., and Nocrack 200 manufactured by Ouchi Shinko Chemical Industry Co., Ltd. as an anti-aging agent. Is. The numerical values of each material are parts by weight.

Further, the kneaded products having the formulations shown in Table 2 below were prepared, and the kneaded products were put in a mold for an outsole at 160 ° C.
Vulcanization molding under conditions of 10 minutes and outsole 12-19
Hardness of each outsole (JIS
A) was measured.

[0034]

[Table 2] In the table, NR, BR, SBR, silica, plasticizer, and anti-aging agent are the same as those in Table 1, the silane coupling agent is Degussa Si69, and the vulcanization accelerator (1) is Ouchi Shinko Chemical Industry Nox Cellar. NS, the vulcanization accelerator (2) is Sokushinol D manufactured by Sumitomo Chemical, and the vulcanization accelerator (3) is Nox Cellar 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 molded into the outsole having the ground contact surface shown in FIG. In addition, all the protrusions on the ground surface are 5 mm from the flat surface.
Protruded to height.

Next, a foam EVA midsole and an upper, which have been separately prepared, are prepared, and the outsole 1 is prepared.
For each of Nos. 19 to 19, a midsole was adhered to the outsole, and an upper was further adhered thereon to obtain a shoe form. Furthermore, the spikes (spike A (FIG. 2), spike B (FIG. 3), spike C (FIG. 4)) shown in FIGS. 2 to 4 and the metal spikes (spikes) having the same shape as the spike of FIG. D) was prepared. Then, according to Embodiments 1 to 16 shown in Table 3 below, these spikes were screwed to the grounding surface of the outsole of a predetermined shoe among the plurality of shoes produced above and the spikes were not attached. Shoes and Comparative Examples 1 to 1 shown in Table 4 below
Completed 8 shoes. In the case where the spikes were attached, the tips of the spike protrusions protruded by about 2 mm from the tips of the protrusions formed on the grounding surface of the outsole.

For each of the shoes of the embodiment and the comparative example created as described above, a total of 4 testers of 10 natural testers were used: natural grass in a dry state, concrete in a dry state, natural grass in a wet state, and concrete in a wet state. Sensory evaluation was performed on the feeling of use after walking, running, and light exercise on various types of road surfaces. The evaluation was performed using an outsole in which neither a silylating agent nor a silane coupling agent was blended, and carbon was used as a filler, and the shoes of Comparative Example 7 in which spikes were not fixed to the outsole were 5 points (standard). ), The non-slip (slip resistance) of each shoe and the non-slip property were comprehensively judged, and a 10-point method was used to evaluate the average value of 10 persons. The evaluation results are shown in Tables 3 and 4 together with the shoe structure.

[0038]

[Table 3]

[0039]

[Table 4]

Tables 3 and 4 show that Embodiments 1 to 16 (outsole is water repellent) compared to the conventional general shoes of Comparative Example 7 (shoes in which the outsole does not contain a water repellent substance and spikes are not attached). Any shoe containing the substance (silylating agent or silane coupling agent) and fitted with resin spikes) was able to obtain a high score result. In particular, the feeling of use was greatly improved when the road surface was in a wet state.
It was also found that the feeling of use when the road surface was natural grass was remarkably improved, and that with natural grass, a similar and very good feeling of use was obtained in both wet and dry conditions.

On the other hand, in Comparative Examples 1 to 3, the resin spike was used as compared with Comparative Example 7, so that the feeling of use on the natural grass in the dry state was improved. Since the water repellent performance was not obtained, the usability was not so improved. Further, in Comparative Examples 4 and 8, as compared with Comparative Example 7, the outsole contained the water-repellent substance (silylating agent or silane coupling agent), so that the concrete in a wet state was less likely to slip and the usability was improved. .
However, the feel of the natural grass was not improved in wet and dry conditions. Further, in Comparative Examples 5 and 6, as compared with Comparative Example 7, the amount of metal spikes was attached, so that the natural grass in a dry state was less likely to slip and the usability was improved. Although it contained an agent, it became slippery in wet concrete and the usability was greatly reduced.

[0042]

As is apparent from the above description, according to the shoe of the present invention, the outsole made of the molded body of the rubber composition containing the silylating agent and / or the silane coupling agent is used. By fixing the resin spikes on the ground contact surface, good slip resistance can be obtained on both concrete (asphalt) and natural grass road surfaces, whether the road surface is dry or wet. In particular,
The resin spikes protruding from the grounding surface side of the outsole allow the resin spikes to dig into the grass surface in both dry and wet grass surfaces, resulting in extremely good slip resistance. 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 in a dry state or a wet state.

[Brief description of drawings]

FIG. 1 is a plan view of a specific example of an outsole used in a shoe of 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.

5 is a view 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 cross section taken along line VV of FIG. 1.

[Explanation of symbols]

1A, 1B, 1C resin spikes 10 flat surface 11 grooves 12, 13, 16, 32, 33, 34a Projection 14b, 34b screw holes 50 First sole part 51 Second Sole Part 53 Arch part 62 screw 100 outsole

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-172713 (JP, A) Actual development Sho 60-109405 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) A43B 13/26

Claims (6)

(57) [Claims] 1. A silica composition containing a silylating agent.
An outsole composed of a molded body of a rubber composition combined with each other, and a plurality of resins separately provided on the ground surface of the outsole
Shoes , each of which is provided with a resin spike having a fixed spike. 2. The silylating agent is represented by the following formula (1):
A compound in the rubber composition.
-Containing 1 to 15 parts by weight per 100 parts by weight of component
The shoe according to claim 1. RaSiX _4-a (1) (In the formula, a is an integer of 0 to 3, R is -H, or -CH
3, an organic group such as ═C6 H5, X is —Cl, —OCH3
, -OC2 H5 and the like. ) 3.A compound represented by the following formula (2) or /
And a silane cup that is a compound represented by the following formula (3)
Rubber composition containing ring agent and containing silica
The outsole consisting of the molded body of
On the ground, place several separate resin spikes on the ground.
Each is equipped with a fixed resin spike
Shoes to wear.         XSiR                                        … (2) (In the formula, X is an alkoxy group or a chlorine atom, and R is vinyl.
Group, glycid group, methacryl group, amino group, mercapto
Selected from the group consisting of a group, an epoxy group, and an imide group.
It is any one kind. ) (C _n H _{2n + 1} O) _Three −Si− (CH _Two ) _m -S _k -(CH _Two ) _m −Si− (C _n H _{2n + 1} O) _Three                                                             … (3) (In the formula, n is an integer of 1 to 4, m and k are integers of 1 to 6,
is there. ) 4. A compound represented by the above formula (2) or /
And a silane cup that is a compound represented by the above formula (3)
100 parts by weight of polymer component in the rubber composition
4. 1 to 15 parts by weight per part are contained.
shoes. 5. The rubber composition is a polymer in the rubber composition.
20 to 100 parts by weight of silica per 100 parts by weight of component
Containing any one of claims 1 to 4. Reka 1
Stated shoes. 6. The above resin spikes are attached to the outsole.
At the same height as the protrusion formed on the ground, or the protrusion
2. It projects higher within a range of 5 mm or less than 1.
The shoe according to claim 5.