JPH08214910A - Sole - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] The present invention is a sole having spiked studs, which is mainly suitable for golf shoes. The aim is to provide an excellent shoe sole. A sole according to the present invention has an opening formed in a central portion of a stepping portion of an outsole in which a base portion of a spike stud is made of hard resin, and an opening portion is formed in the opening portion. And a midsole made of a soft resin is laminated and filled into the upper surface of the outsole and the opening so as to be integrated with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a sole having spiked tacks, which is suitable mainly for golf shoes. The sole has a great flexibility in the stepped portion while maintaining the rigidity between spiked tacks and is excellent in stability during swing. Regarding shoe soles.

[0002]

2. Description of the Related Art Conventionally, the soles of golf shoes have been generally made of natural leather, nylon, polyurethane or the like, but in recent years, soft materials such as urethane foam, EVA foam, and rubber foam are lightweight and have cushioning properties. , A sole of a golf shoe having a structure in which a holding plate made of a material such as hard urethane for holding spike studs or nuts for attaching spike studs is inserted into the sole body by using a material having excellent flexibility as a material for the sole body there were. Further, a hard material such as hard urethane is used for the outsole on the side of the sole contacting surface, a sole using the soft material for the midsole on the upper surface of the sole, a notch is provided in the peripheral portion of the outsole, or an outsole stepping portion There was also a sole with an opening formed in the center.

[0003]

The drawbacks of the conventional soles will be described with reference to the drawings. That is, the sole shown in FIG. 7 is made of urethane foam or EV foam.
A, cushioning properties made of soft material such as foam rubber
Spike stud 10 on the sole body 103a with excellent flexibility
2, or spike pin mounting nut (not shown)
It has a structure in which a holding plate 101a made of hard urethane or the like for holding is inserted. The sole with this structure,
Due to the characteristics of the body material used, it was possible to provide a sole that is comfortable to wear and has less fatigue because it has excellent cushioning properties and flexibility. However, since a foamed material is used on the ground contact surface side, it has a drawback that it is inferior to a hard material such as hard urethane in terms of durability such as wear resistance and crack growth resistance. In addition, there is a drawback in that it is difficult to obtain the high-class feeling of a hard material in terms of appearance.

The sole shown in FIG. 8 is an outsole 10.
1b is a sole that uses the above-mentioned soft material for the midsole 103b on the upper surface, and uses a hard material such as hard urethane for the outsole 101b on the ground contact side, and has a structure that considers improvement in durability and appearance. there were. However, in the sole having this structure, since the entire surface of the outsole is formed of hard urethane, there is a drawback in that the abrasion resistance is improved but the flexibility is extremely poor.

Therefore, in order to improve the flexibility of the sole, as shown in FIG. 9, the outsole 101c made of a hard material is provided with a notch 105 for bending at the peripheral portion of the stepped portion, or the tenth. As shown in the figure, there is also a sole having a structure in which an opening a is provided in the central portion of an outsole stepping portion made of a hard material. In the sole provided with the notch 105 shown in FIG. 9, the flexibility is slightly improved, but the flexibility is considerably inferior to the sole using the holding plate 101a shown in FIG.

In the sole having the opening a shown in FIG. 10, the flexibility is remarkably improved as the opening a is increased, but on the other hand, between the inner side spike and the outer side spike, When the shoe wears and the load is applied from above, the sole bends between the spikes inside and outside, resulting in fatigue of the foot and grounding as shown in FIG. 6 (b). There were also drawbacks, such as causing problems due to the push-up of spiked tacks. On the other hand, if the distance between the inner side spike and the outer side spike is shortened, the rigidity between the soles is improved, but the lateral stability at the time of swing, which is the basic performance of the golf shoe, is impaired. In addition, such a golf shoe has a deformed sole after long-term use, and it is difficult to maintain the shape of the shoe, and the so-called shape retention is poor.

[0007]

The sole according to the present invention comprises:
An opening is formed in the center of the stepped part of the outsole made of hard resin and the base of the spike stud is embedded, and a crosspiece bridging the outer side and the inner side of the opening is provided. The sole is characterized in that a midsole made of a soft resin is laminated and filled into the upper surface and the opening to be integrated.

Among the spike studs embedded in the peripheral portion of the stepping portion of the outsole, the spike studs provided on the outer shell side and the spike studs provided on the inner shell side are connected along a straight line. It is also possible to provide a crosspiece, and to provide a reinforcing rib on the upper surface or the lower surface of the crosspiece, or on both the upper surface and the lower surface.

Further, a cutout is provided in the periphery of the stepping portion of the outsole between at least one spike stud, and in the periphery of the stepping portion of the outsole, the toe ball It is also possible to provide a notch between the spike studs in the vicinity of the portion and in the vicinity of the toe on the outer shell side.

A soft resin of the same quality as that of the midsole is filled in the grounding surface side of the opening provided in the central portion of the stepping portion of the outsole, and the filled portion is filled with 6
It is also possible to provide a plurality of grooves with an angle of 5 ° to 115 °, and of the grooves, the angle of the groove from the heel is the smallest, and the groove may be provided so that the angle gradually increases toward the toe side. Is.

The hardness of the hard resin forming the outsole is JIS A hardness 80 to 99, or SHORE.
The D hardness is 45 to 70, and the hardness of the soft resin forming the midsole is ASKER C hardness 60 to 9
The sole is made of a material having a specific gravity of 0 and a specific gravity of 0.50 to 0.90.

[0012]

Since the sole according to the present invention has the above structure,
The following is an operation unique to the present invention. First, the outsole in which the spike studs are embedded is made of a hard resin, firmly holds the spike studs, and has an opening at the center of the stepped part of the outsole, so that the flexibility of the stepped part is dramatically increased. improves. Moreover, since the crosspiece that bridges the outer side and the inner side of the opening is provided, the lateral rigidity between the inner and outer spikes is improved and the entire sole is prevented from bending.

Further, the flexibility of the sole is improved by the notch provided in the periphery of the stepping portion of the outsole and between the spike studs, and the ground surface side of the midsole filled in the opening portion. Since the flexion groove provided in is set at an angle that matches the forward movement of the flexion position of the foot during walking, the flexibility during walking is further improved.

By the notch provided in the periphery of the stepped portion of the outsole, between the spike studs near the ball of the toe and near the tip of the toe of the outer side, the ball of the toe and the tip of the outer toe are provided. The flexibility of the line connecting the part and the part is improved. By improving the flexibility on the line, the toe can be firmly caught on the ground during the golfer's series of swing operations,
Contributes to the stability of the swing.

The opening provided at the center of the stepped portion of the outsole is filled with the same soft resin as that of the midsole, and the filled portion has an angle of 65 ° to 115 ° with respect to the sole center line. By providing a plurality of grooves, and further by gradually increasing the angle formed by the plurality of grooves with respect to the center line from the most heel side groove to the toe side groove, bending of the sole during walking Of course, the flexibility of the sole during golf swing can be sufficiently ensured.

The hardness of the hard resin forming the outsole is JIS A hardness 80 to 99, or SHORE.
The D hardness is 45 to 70, and the hardness of the soft resin forming the midsole is ASKER C hardness 60 to 9
By using a material having a specific gravity of 0 and a specific gravity of 0.50 to 0.90, the feeling of thrusting up from the spike studs to the soles is mitigated, the flexibility of the sole itself is improved, and a lightweight sole is provided. be able to.

[0017]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of an outsole of a sole according to the present invention viewed from the ground contact surface side. FIG. 2 is a plan view of the sole according to the present invention viewed from the ground contact surface side. FIG. 3 is an end view taken along line XX in FIG. FIG. 4 is an end view taken along line ZZ in FIG. FIG. 5 is an end view taken along the line YY in FIG. FIG. 6 is a conceptual diagram comparing a cross section of the sole (a) according to the present invention with a conventionally used sole (b), and shows a case where a load is applied. FIG. 7 is a plan view of an example of a conventionally used sole and an end view taken along line MM. FIG. 8 is a plan view of an example of a conventionally used sole and an end view taken along the line NN. FIG. 9 is a plan view of an example of a conventionally used sole. FIG. 10 is a plan view of an example of a conventional sole.

The conventional sole with spike tack has been represented by FIGS. 7 to 10.
The sole according to the present invention is an improvement over the above-mentioned drawbacks of the conventional sole. As shown in FIGS. 1 to 4, the spike studs 2 are fixed to the peripheral portion of the outsole 1,
An opening A is formed in the center of the stepped portion B of the outsole 1, and a crosspiece 4 that bridges the outer side and the inner side of the opening A.
The soles a, 4b, 4c are provided above the ground plane, and the midsole 3 made of a soft resin is laminated and filled into the upper surface of the outsole 1 and the opening A so as to be integrated.

The crosspieces 4a, 4b, 4c improve the rigidity between the outer instep spike stud 2a and the inner instep spike stud 2b, and are the most peripheral parts of the stepped portion of the outsole 1. The crosspieces are provided along a straight line connecting the spike studs 2a provided on the outer shell side and the spike studs 2b provided on the inner shell side where the load is concentrated.

Of the bars shown in FIG. 1, ribs 6 are provided on the upper surface of the bars 4c for reinforcing the bending rigidity of the bars as shown in the end view of FIG. Although not shown, the ribs 6 can be provided on all the crosspieces or any crosspiece. Further, the ribs 6 can be arbitrarily selected to be provided only on the upper surface of the crosspiece, only on the lower surface, or on both the upper surface and the lower surface. The rib 6
By providing the, the rigidity of the crosspiece is reinforced,
By increasing the surface area of the crosspiece, an effect of improving the adhesiveness of the midsole surrounding the crosspiece with the soft material can be expected.

In the sole according to the present invention, a notch portion 5 is provided at a peripheral portion of the outsole 1 and between at least one spike stud 2 among a plurality of spike studs 2 fixed to each other. It is a sole characterized by that. As shown in FIG. 2, the notch 5 is for improving the flexibility of the sole during walking or golf swing. For example, the cut portion 5a provided between the spike studs near the ball of the toe and the cut portion 5c and the cut portion 5d provided between the spike studs on the outer side mainly contribute to the flexibility during walking. The 5b provided between the notch 5a and the spike rivetr near the toe of the outer shell side mainly contributes to the flexibility of the toe when swinging.

As shown in FIG. 2, in the sole according to the present invention, the opening A provided at the central portion of the stepped portion B of the outsole 1 is filled with a soft resin of the same quality as that of the midsole 3, and Since it is integrated with the midsole 3 that surrounds 4 and is laminated on the upper surface of the outsole 1, as a result, the midsole 3 has a configuration in which the midsole 3 is exposed to the ground plane side from the opening A. The midsole 3 exposed from the opening A toward the ground contact surface is provided with a plurality of grooves 7 having an angle θ of 65 ° to 115 ° with respect to the center line of the sole. The angle θ of the groove 7 from the heel is the smallest, and is gradually increased toward the toe side. The groove 7 is combined with the notch 5 provided in the peripheral portion of the outsole 1 to further improve the flexibility of the sole. In addition, the angle θ formed by the groove 7 and the sole center line
However, since it is configured to gradually increase from the heel side to the toe side, it is possible to cope with the forward movement of the bending position during walking, and it is possible to realize smoother bending property.

The material of each member forming the sole according to the present invention can be appropriately changed and combined in the design of the sole, but the cushioning property and the flexibility of the midsole 3, the durability of the outsole 1 and the resilience thereof. In consideration of the total weight of the sole, the hardness of the hard resin forming the outsole is JIS A hardness 80 to 99, or SHO.
A combination of materials having a RED hardness of 45 to 70, a soft resin forming the midsole having a hardness of ASKER C hardness of 60 to 90 and a specific gravity of 0.50 to 0.90 is most preferable.

[0024]

EFFECT OF THE INVENTION The sole according to the present invention is constructed as described above and exerts a remarkable effect unique to the present application. In the sole according to the present invention, the outsole provided on the ground contact surface side is formed of a hard material, has excellent durability, has a beautifully designed appearance, and easily retains its aesthetic appearance even after long-term use. Has the effect. On the other hand, the midsole laminated on the upper surface side of the sole is made of a soft material, and has excellent cushioning property and flexibility, and the foot is soft and comfortable to wear.

Further, since an opening is provided at the center of the stepping portion of the outsole and the midsole made of a soft material is exposed to the ground contact surface side, it is excellent in flexibility. Further, by providing the notch in the peripheral portion of the outsole, the flexibility is improved along the line connecting the notch provided on the outer shell side and the notch provided on the inner shell side. . In particular, by improving the flexibility along the line that connects the notch provided on the outer instep side toe and the notch provided near the inner toe ball, the flexibility of the left foot during takeback is improved. In the case of a golfer who raises the heel, the toe part on the instep side can firmly grip the ground. Also, at the time of impact, you can firmly kick the ground with the toe part of the instep of the right foot, so you can transmit the power of the swing to the ball strongly and accurately, extending the flight distance and stabilizing the direction Play.

The groove formed on the ground contact surface of the midsole also contributes to a marked improvement in the flexibility of the sole. Also,
Since the angle formed by the groove with the center line of the sole gradually increases from the heel side to the toe side, it is possible to respond to a change in the bending position that moves forward when walking, and to realize smoother bending performance. be able to.

Since the opening is provided with a crosspiece that bridges the outer shell side spike and the inner shell side spike provided on the peripheral portion of the outsole, the lateral rigidity between the inner and outer spikes is maintained, and the sole is maintained. It is possible to prevent the entire body from bending, which is effective in reducing foot fatigue and improving the shape retention of the shoe. By providing a rib on the crosspiece, the crosspiece is reinforced and the surface area of the crosspiece is increased,
It also has the effect of improving the adhesion of the midsole surrounding the crosspiece to the soft material.

[Brief description of drawings]

FIG. 1 is a plan view of an outsole according to the present invention viewed from a ground contact surface side.

FIG. 2 is a plan view of the sole according to the present invention viewed from the ground contact surface side.

FIG. 3 is an end view taken along line XX in FIG.

FIG. 4 is an end view taken along line ZZ in FIG.

5 is an end view taken along line YY in FIG.

FIG. 6 is a conceptual diagram comparing a sole end surface when a load is applied during wearing of the sole (a) according to the present invention and the conventional sole (b).

FIG. 7 is a plan view of an example of a conventionally used sole, and an end view taken along line MM.

FIG. 8 is a plan view of an example of a conventionally used sole and an end view taken along the line NN.

FIG. 9 is a plan view of an example of a conventionally used sole.

FIG. 10 is a plan view of an example of a conventional sole.

[Explanation of symbols]

 1 Outsole 2 Spike Tack 3 Midsole 4 Crosspiece 5 Notch 6 Rib 7 Groove 101a Holding Plate 101b Outsole 101c Outsole 101d Outsole 102 Spike Tack 103a Sole Body 103b Midsole 103c Midsole 105 Opening a Opening B Breading part b Breading part

Claims (8)

[Claims] 1. An opening is formed in a central portion of a stepping portion of an outsole in which a base portion of a spike stud is made of hard resin, and an opening is formed in the central portion of the stepping portion, and a crosspiece bridging the outer side and the inner side of the opening is formed. A sole which is provided above a grounding surface, and a midsole made of a soft resin is laminated and filled into the upper surface of the outsole and the opening so as to be integrated. 2. Of the spike studs embedded in the peripheral portion of the stepping portion of the outsole, the spike studs provided on the outer shell side and the spike studs provided on the inner shell side are connected along a straight line. The crosspiece is provided, The crosspiece is provided.
The stated sole. 3. The sole according to claim 1, wherein reinforcing ribs are provided on an upper surface, a lower surface, or both surfaces of the upper surface and the lower surface of the crosspiece. 4. The sole according to claim 1, 2 or 3, wherein a cutout portion is provided between at least one spike stud in a peripheral portion of the stepping portion of the outsole. 5. The notch is provided between the spike studs near the ball of the toe and near the toe of the outer instep, which is a peripheral portion of the stepping portion of the outsole.
2, 3 or 4 sole. 6. The soft resin of the same quality as the midsole is filled in the grounding surface side of the opening provided in the central portion of the stepping portion of the outsole, and the filled portion with respect to the sole center line,
The sole according to claim 1, 2, 3, 4 or 5, wherein a plurality of grooves having an angle of 65 ° to 115 ° are provided. 7. The sole according to claim 6, wherein among the grooves, the angle of the groove from the heel is the smallest, and the groove is provided so that the angle gradually increases toward the toe side. 8. The hardness of the hard resin forming the outsole is JIS A hardness 80 to 99, or SHORE.
The D hardness is 45 to 70, and the hardness of the soft resin forming the midsole is ASKER C hardness 60 to 9
8. A material having a specific gravity of 0.5 to 0.90 and a specific gravity of 0.50 to 0.90.
The stated sole.