JP2001218603A - Sole of shoe and golf shoes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sole of shoe which has an excellent shock absorbing property and stability, and also provide a pair of golf shoes using this sole. SOLUTION: The sole of shoe is provided with a stabilizing plate 7, which consists of an inner rising section 21, outer rising section 23, inner base section 25, outer base section 27, connection 29, and inner and outer rear sections. The inner rising section 21 and the outer rising section 23 are bonded to the wall surface of an inner wall part 17 and the wall surface of an outer wall part 19 of a mid sole 5, respectively. The inner base section 25 and the outer base section 27 are bonded to a part closer to the inside and a part closer to the outside of the lower surface of the mid sole 5, respectively. The connection part 29 is bonded to almost the center of the lower surface of the mid sole 5. In other words, near the part of the arch of the foot, the wall surface and the lower surface of the mid sole 5 are nearly completely covered by the stabilizing plate 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shoe sole having a midsole containing air bubbles. Further, the present invention relates to a golf shoe using the shoe sole.

[0002]

2. Description of the Related Art A shoe sole for a golf shoe usually comprises an outsole and a midsole. Since the outsole is in direct contact with and rubs against the ground, the outsole needs to have excellent strength and abrasion resistance. For this reason, the outsole is often made of hard rubber or synthetic resin. On the other hand, since the midsole needs to absorb the impact transmitted to the foot when landing, it is often made of rubber or synthetic resin containing air bubbles (so-called sponge midsole). Since the impact at the time of landing is transmitted mainly in the thickness direction of the shoe sole, the midsole needs to be thick to some extent to absorb the impact.

Since the midsole containing air bubbles is flexible, it is easily deformed not only in the thickness direction but also in the shear direction (the direction perpendicular to the thickness direction). If the midsole undergoes shear deformation when the golfer swings the golf club, the position of the foot becomes unstable, and the swing form may be disturbed. In addition, the golf ball may be difficult to walk due to the shear deformation of the midsole.

Conventionally, various proposals have been made for the purpose of improving the stability of shoes. For example, Japanese Utility Model Publication No. 1-30882 discloses an athletic shoe in which a reinforcing component is provided near the heel of an upper part (upper part). However, since this reinforcement component only suppresses the movement of the instep portion, it cannot suppress the shear deformation of the midsole. In addition, since this reinforcing component is provided near the heel, it cannot contribute to improving the stability of the arch portion, which is the portion where shear deformation is most likely to occur during a golf club swing.

Japanese Utility Model Publication No. Sho 62-22161 discloses a shoe provided with a heel stabilizing piece that encloses a sole and an upper. Since the heel stabilizing portion is also provided near the heel, it cannot contribute to improving the stability of the arch portion, which is the portion where shear deformation is most likely to occur during a golf club swing.

Japanese Utility Model Publication No. Hei 4-20246 discloses an athletic shoe provided with a heel counter made of a hard elastic body. Since the heel counter is provided between the midsole and the upper part, the heel counter cannot suppress the shear deformation of the midsole. Further, by providing the heel counter made of a hard elastic body above the midsole, there is a possibility that the shock absorbing performance in the thickness direction at the time of landing may be significantly impaired.

Japanese Utility Model Publication No. 5-37764 discloses a sports shoe having a reinforcing wall and a reinforcing member made of a hard material. Since the reinforcing wall covers the side portion of the heel portion, the stability of the arch portion, which is the portion where shear deformation is most likely to occur during a golf club swing, is not sufficiently improved.

Japanese Unexamined Patent Publication No. Hei 11-203 discloses a sports shoe provided with a midsole having a corrugated sheet interposed. In this midsole, the impact absorbing performance in the thickness direction at the time of landing may be significantly impaired due to the influence of the corrugated sheet.

[0009]

As described above, a golf ball which has a good shock absorbing performance in the thickness direction at the time of landing and has improved stability at the arch portion, which is a portion where shear deformation is most likely to occur during a golf club swing. Shoes have not yet been obtained. The present invention has been made in view of such a problem, and an object of the present invention is to provide a shoe sole excellent in both shock absorption and stability and a golf shoe using the shoe sole.

[0010]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above-mentioned object, and provides a sole for golf shoes having an outsole and a midsole containing air bubbles,
It further includes a stabilizer made of a hard elastic body, and the stabilizer is provided with an inner standing portion joined to an inner wall surface of the midsole near the arch and a rear portion of the midsole extending from the inner rising portion to the heel portion. An inner rear portion joined to the wall surface, an outer standing portion joined to the outer wall surface of the midsole near the arch, and an outer rear portion extending from the outer standing portion to the heel portion and joined to the rear wall surface of the midsole. And a shoe sole having:

In this shoe sole, an inner rising portion and an outer rising portion of a stabilizer are joined to the inner wall surface and the outer wall surface of the mid sole near the arch, respectively. Since the rear portion is provided, the shear deformation of the midsole is regulated by the stabilizer. Further, since the stabilizer does not intervene between the foot and the midsole, it has almost no adverse effect on the shock absorption in the thickness direction of the midsole. Accordingly, a golfer wearing a golf shoe having the sole can obtain both excellent stability and high shock absorption.

Preferably, the inner rear portion and the outer rear portion are continuous with each other near the rear end of the heel portion. This allows
The shear deformation of the midsole is better controlled and the stability of the golf shoe is increased.

Preferably, the stabilizer further includes an inner base portion and an outer base portion. The inner base portion is continuous with the inner upright portion, and is joined to an inner side of the lower surface of the midsole near the arch portion. Also, the outer base part is
It is continuous with the outer standing part and is joined to the outside of the lower surface of the midsole near the arch part. Thereby, the shear deformation of the midsole is better regulated, and the stability of the golf shoe is enhanced.

[0014] Preferably, the inner base portion and the outer base portion are connected by a connecting portion. The connecting portion is joined to the center of the lower surface of the midsole near the arch. The connecting portion prevents the distance between the inner base portion and the outer base portion from being increased when a load is applied. Thereby, the shear deformation of the midsole is better regulated, and the stability of the golf shoe is enhanced.

Preferably, the inner rising portion, the inner rear portion, the outer rising portion, and the outer rear portion are joined only to the midsole and do not reach the upper portion. This prevents the comfort of the golf shoes from being reduced. Also,
An increase in manufacturing cost due to joining of the upper portion and the stabilizer is prevented.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Embodiments of the present invention will be described.

FIG. 1 is a front view showing a sole for a golf shoe according to an embodiment of the present invention. FIG.
FIG. 2 is a left side view showing the shoe sole of FIG. 1. FIG.
FIG. 2 is a right side view showing the shoe sole of FIG. 1. FIG.
FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1. further,
FIG. 5 is a sectional view taken along line VV in FIG. FIG.
The sole shown in FIG. 5 to FIG. 5 is for the left foot. Therefore, the left side in FIG. 1 is the inside of the foot, and the right side in FIG. 1 is the outside of the foot. The shape of the sole for the right foot is a mirror image of these figures.

As shown in FIG. 2, the sole comprises a heel portion A, an arch portion B and a front portion C. The heel part A is a part corresponding to the heel of the human body. The arch part B is a part corresponding to the arch of the human body. And the front part C is a part located ahead rather than the arch of a human body. The heel portion A and the front portion C form a ground contact surface of the shoe sole. Although not shown, a golf shoe is configured by attaching an upper portion or the like to the shoe sole. The sole includes a front outsole 1, a rear outsole 3, a midsole 5, and a stabilizer 7. In addition, a logo plate 9 (FIG. 1)
See).

As shown in FIG. 1, FIG. 2 and FIG. 3, on the lower surface of the front outsole 1 and the rear outsole 3 (hereinafter, also referred to as "outsole 1, 3"). , A large number of protrusions 11 are formed. The protrusions 11 are provided to prevent slippage during golf club swing or walking. A stud receiving portion 13 is formed on the lower surface of the outsole 1, 3. This tack receiving part 13
, A stud for non-slip is attached. The material of the outsoles 1 and 3 is not particularly limited, but is usually made of rubber or synthetic resin. Since the outsoles 1 and 3 are portions that come into contact with the ground, they need to be excellent in strength and wear resistance. For this reason, the outsoles 1 and 3 usually do not contain air bubbles (so-called solid rubber or solid resin).

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1 as described above. This figure shows a section of the arch B. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 1 as described above. As is clear from FIGS. 4 and 5, the midsole 5
Comprises a main body 15, an inner wall 17 and an outer wall 19. The main body 15, the inner wall 17 and the outer wall 19 are integrally formed in this embodiment.

The material of the midsole 5 is not particularly limited. For example, a composition using a base polymer of ethylene-vinyl acetate copolymer, polyurethane or the like can be suitably used. In particular, an ethylene-vinyl acetate copolymer that is lightweight and has excellent hydrolysis resistance is preferred.

The midsole 5 contains air bubbles. The bubbles are formed by foaming of a foaming agent, blending of minute hollow spheres (referred to as “micro balloons” or the like), and the like. The midsole 5 is made flexible by the air bubbles, and the shock absorbing property of the shoe sole is enhanced. The expansion ratio of the midsole 5 is preferably 1.5 to 10 times.

The thickness of the midsole 5 (the thickness of the thickest portion of the main body portion 15 in the heel portion A) is 15 mm or more and 27 m
m or less, particularly preferably 17 mm or more and 22 mm or less. If the thickness is less than the above range, the impact absorption may be insufficient. Conversely, if the thickness exceeds the above range, the stability may be insufficient.

The hardness of the midsole 5 measured by an Asker C type hardness meter specified by the Japan Rubber Association Standard (SRIS 0101) is preferably 50 or more and 75 or less.
5 or more and 70 or less are particularly preferable. If the hardness is less than the above range, the stability may be reduced. Conversely, if the hardness exceeds the above range, the impact absorption may be insufficient.

As shown in FIG. 4, in the arch portion B, the stabilizer 7 has an inner upright portion 21, an outer upright portion 23, an inner base portion 25, and an outer base portion 27. The inner base portion 25 and the outer base portion 27 are connected by a connecting portion 29. The inner upright portion 21, the inner base portion 25, the connecting portion 29, the outer base portion 27, and the outer upright portion 23 are integrally formed in this embodiment. The inner standing portion 21 is joined to the wall surface (inner wall surface) of the inner wall portion 17. The outer standing portion 23 includes the outer wall portion 1.
9 (outer wall surface). The inner base portion 25 is joined to the lower surface of the main body portion 15 on the inner side. The outer base portion 27 is joined to an outer side of the lower surface of the main body 15. The connecting portion 29 is joined to the lower surface of the main body 15 near the center. That is, near the arch part B, the wall surface and the lower surface of the midsole 5
Almost covered by. Therefore, the deformation of the midsole 5 in the shear direction is regulated by the stabilizer 7, and the stability of the shoe sole is improved. Further, since the stabilizer 7 does not intervene between the foot and the midsole 5, it hardly hinders the deformation of the midsole 5 in the thickness direction. Therefore,
The shock absorption of the sole is almost maintained.

As shown in FIGS. 2, 3 and 5, at the heel portion A, the stabilizer 7 is provided with an inner rear portion 31 and an outer rear portion 3.
3 is provided. The inner rear portion 31 extends from the inner standing portion 21 and is joined to the rear side (rear wall surface) of the inner wall portion 17. The outer rear portion 33 extends from the outer standing portion 23 and is joined to a rear portion (rear wall surface) of the outer wall portion 19. In this way, when the stabilizer 7 reaches the heel portion A, the shear deformation of the midsole 5 is better regulated. The inner rear portion 31 and the outer rear portion 33 are continuous with each other at the rear end of the heel portion A, whereby the shear deformation of the midsole 5 is more reliably restricted.

The stabilizer 7 is made of a hard elastic material. Examples of the base polymer used for the stabilizer 7 include an ethylene-vinyl acetate copolymer, polyurethane, polyamide, and polyester. In particular, an ethylene-vinyl acetate copolymer and polyurethane excellent in adhesiveness to the midsole 5 are preferable.

Since the stabilizer 7 restricts the deformation of the midsole 5, it must have a higher hardness than the midsole 5. The hardness of the stabilizer 7 measured with a durometer type A according to JIS-K-6253 (JIS
-A hardness) is preferably 75 or more and less than 100, particularly preferably 75 or more and 95 or less, and more preferably 85 or more and 95 or less. If the hardness is less than the above range, the stabilizer 7 may not be able to sufficiently regulate the deformation of the midsole 5 in the shear direction. Conversely, if the hardness exceeds the above range, the impact absorption of the midsole 5 may be insufficient, and delamination between the stabilizer 7 and the midsole 5 may easily occur. Sometimes.

The thickness of the stabilizer 7 is preferably 1.5 mm or more and 4 mm or less, particularly preferably 2 mm or more and 3 mm or less.
If the thickness is less than the above range, the effect of the stabilizer 7 restricting the deformation of the midsole 5 may be insufficient. Conversely, if the thickness exceeds the above range, the appearance of the golf shoe may be poor.

The upper end of the stabilizer 7 is located below the upper end of the midsole 5. For this reason, midsole 5
Is not covered with the stabilizer 7. That is, the inner upright portion 21, the inner rear portion 31, the outer upright portion 23, and the outer rear portion 33 of the stabilizer 7 have such a height that they do not reach the upper portion. Thereby, good comfort of the golf shoe is maintained, and labor for joining the stabilizer 7 and the upper portion is omitted. The height of the inner upright portion 21 from the inner base portion 25 and the height of the outer upright portion 23 from the outer base portion (when the height differs depending on the position,
The height of the highest part) is preferably 15 mm or more and 40 mm or less, particularly preferably 20 mm or more and 35 mm or less.
If the height is less than the above range, the stabilizer 7 may not be able to sufficiently restrict the shear deformation of the midsole 5. Conversely, if the height exceeds the above range,
There is a possibility that the stabilizer 7 may reach the upper part. The width of the inner rear portion 31 and the outer rear portion 33 in the vertical direction (when the width varies depending on the position, the width of the largest portion) is preferably 8 mm or more and 20 mm or less, and is 10 mm.
It is particularly preferable that the thickness is 15 mm or less. If the width is less than the above range, the stabilizer 7 may not be able to sufficiently restrict the shear deformation of the midsole 5. Conversely, if the width exceeds the above range, the stabilizer 7 may reach the upper portion.

The stabilizer 7 has a front embedded portion 35 and a rear embedded portion 37. The front buried portion 35 is buried between the midsole 5 and the front outsole 1. The rear buried portion 37 is buried between the midsole 5 and the rear outsole 3. The front buried portion 35 and the rear buried portion 37 more reliably join the stabilizer 7 to the midsole 5.

FIG. 6 is a front view showing a shoe sole for a golf shoe according to another embodiment of the present invention. FIG. 7 is a left side view showing the shoe sole of FIG. FIG. 8 is a right side view showing the shoe sole of FIG. FIG. 9 is a sectional view taken along line IX-IX in FIG. FIG. 10 is a sectional view taken along line XX in FIG. The sole shown in FIGS. 6 to 10 is for the left foot.
Accordingly, the left side in FIG. 6 is the inside of the foot, and the right side in FIG. 6 is the outside of the foot. The shape of the sole for the right foot is a mirror image of these figures.

As shown in FIG. 7, the sole comprises a heel portion A, an arch portion B, and a front portion C. In FIGS. 6 to 10, members equivalent to those shown in FIGS. 1 to 5 are denoted by the same reference numerals as those in FIGS. 1 to 5, and the description thereof is omitted in the following description. The sole includes a front outsole 1, a rear outsole 3, a midsole 5, and a stabilizer 39. A logo plate 9 is attached to the lower surface of the shoe sole.

As shown in FIGS. 6 and 9, in the arch portion B, the stabilizer 39 is formed by the inner upright portion 21 and the outer upright portion 2.
3, an inner base portion 25 and an outer base portion 27 are provided. This stabilizer 39 does not have the connecting portion 29 like the stabilizer 7 shown in FIGS. Therefore, the inner base portion 25 and the outer base portion 27 are separated from each other with the logo plate 9 interposed therebetween. Of course, the stabilizer 7 having the connecting portion 29 better regulates the shear deformation of the midsole 5, but the inner base portion 25 and the outer base portion 2
Even if the stabilizer plate 7 is separated from the midsole 5,
Can be controlled.

[0035]

EXAMPLES Hereinafter, the effects of the present invention will be clarified based on examples, but it is needless to say that the present invention should not be construed as being limited based on the description of the examples.

Example 1 Polyurethane provided with an upright portion (inner and outer upright portions), a rear portion (inner rear portion and outer rear portion), a base portion (inner base and outer base portion), and a connecting portion. Was prepared as a base polymer. The JIS-A hardness of this stabilizer was 90.
On the other hand, a sponge midsole having an Asker C hardness of 65 using an ethylene-vinyl acetate copolymer as a base polymer and an outsole (a front outsole and a rear outsole) using a styrene-butadiene copolymer and polybutadiene as base polymers. Sole) and prepared. Then, as shown in FIGS. 1 to 5, these were joined, and the upper portion was further attached to obtain a golf shoe of Example 1.

[Examples 2 and 3 and Comparative Examples 1 and 2]
A golf shoe of Example 2 was obtained in the same manner as in Example 1 except that a stabilizer having no connecting portion was used. A golf shoe of Example 3 was obtained in the same manner as in Example 1, except that a stabilizer having no base portion and no connecting portion was used. Also,
A golf shoe of Comparative Example 1 was obtained in the same manner as in Example 1 except that a stabilizer consisting only of the rear portion was used. Further, a golf shoe of Comparative Example 2 was obtained in the same manner as in Example 1 except that a stabilizer consisting only of the base portion and the connecting portion was used.

Comparative Example 3 A golf shoe of Comparative Example 3 was obtained in the same manner as in Example 1 except that no stabilizer was provided.

[Examples 4 and 5] A golf shoe of Example 4 was obtained in the same manner as in Example 1 except that the hardness of the midsole was changed to 40 by changing the composition. Also,
The hardness of the midsole can be increased by 80
A golf shoe of Example 5 was obtained in the same manner as in Example 1 except for the above.

[Examples 6 and 7] The golf shoes of Example 6 were obtained in the same manner as in Example 1 except that the hardness of the stabilizer was changed to 75 by employing the same kind of soft type polymer. Was. A golf shoe of Example 7 was obtained in the same manner as in Example 1, except that the same type of hard polymer was used to make the hardness of the stabilizer 97.

[Sensory Test] The golf shoes of each Example and each Comparative Example were worn by a golfer, and the golf club was allowed to swing and walk on a natural turf. Then, the stability and the shock absorption were evaluated. In the evaluation, very good ones were evaluated as “◎”, good ones as “○”, slightly poor ones as “△”, bad ones as “×”, and extremely poor ones as “XX”. The results are shown in Table 1 below.

[0042]

[Table 1]

In Table 1, the stability of the golf shoes of Comparative Examples 1 and 2 in which the stabilizer did not have an upright portion and the golf shoe of Comparative Example 3 in which the stabilizer did not have a stabilizer were not good. On the other hand, in the golf shoes of each embodiment in which the stabilizer has the upright portion, the stability evaluation is “「 ”or more, and the impact absorption evaluation is“ △ ”or more. . From the evaluation results, the superiority of the present invention was confirmed.

[0044]

As described above, the golf shoes of the present invention are excellent in both stability and shock absorption.

[Brief description of the drawings]

FIG. 1 is a front view showing a shoe sole for a golf shoe according to an embodiment of the present invention.

FIG. 2 is a left side view showing the shoe sole of FIG. 1;

FIG. 3 is a right side view showing the shoe sole of FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV in FIG.

FIG. 5 is a sectional view taken along the line VV in FIG. 1;

FIG. 6 is a front view showing a shoe sole for a golf shoe according to another embodiment of the present invention.

FIG. 7 is a left side view showing the shoe sole of FIG. 6;

FIG. 8 is a right side view showing the shoe sole of FIG. 6;

FIG. 9 is a sectional view taken along line IX-IX in FIG. 6;

FIG. 10 is a sectional view taken along line XX in FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Front outsole 3 ... Rear outsole 5 ... Midsole 7, 39 ... Stabilizer 9 ... Logo plate 11 ... Protrusion 13 ... Tack receiving part 15 ...・ Main body part 17 ・ ・ ・ Inner wall part 19 ・ ・ ・ Outer wall part 21 ・ ・ ・ Inner standing part 23 ・ ・ ・ Outer standing part 25 ・ ・ ・ Inner base 27 ・ ・ ・ Outer base part 29 ・ ・ ・ Connecting part 31 ... inner rear part 33 ... outer rear part 35 ... front buried part 37 ... rear buried part

Claims (6)

[Claims] 1. A shoe sole for a golf shoe having an outsole and a midsole containing air bubbles, further comprising a stabilizer made of a hard elastic material, wherein the stabilizer is provided near an arch portion. An inner upright portion joined to the inner wall surface of the midsole, an inner rear portion extending from the inner upright portion to the heel portion and joined to the rear wall surface of the midsole, and joined to an outer wall surface of the midsole near the arch portion. A shoe sole comprising: an outer raised portion; and an outer rear portion extending from the outer raised portion to the heel portion and joined to a rear wall surface of the midsole. 2. The shoe sole according to claim 1, wherein the inner rear portion and the outer rear portion are continuous with each other near a rear end of the heel portion. 3. An inner base portion connected to the lower portion of the midsole near the arch portion, the inner base portion being continuous with the inner rising portion and being connected to the inside of the lower surface near the arch portion. The shoe sole according to claim 1 or 2, further comprising an outer base portion joined to an outer side of the lower surface of the sole. 4. The shoe sole according to claim 3, wherein the inner base portion and the outer base portion are connected by a connecting portion, and the connecting portion is connected to a center of a lower surface of the midsole near the arch portion. 5. A golf shoe comprising an upper portion and the sole according to any one of claims 1 to 4. 6. The golf shoe according to claim 5, wherein the heights of the inner rising portion, the inner rear portion, the outer rising portion, and the outer rear portion are set so as not to reach the upper portion.