JP2011177403A - Golf shoe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide golf shoes having excellent anti-slip performance by improving outsoles of the golf shoes. <P>SOLUTION: The outsole 12 of the golf shoe includes a base 14 and many spikes 16. A bottom face of the outsole 12 is divided into a toe zone 20, a center zone 22 and a heel zone 24. The outsole 12 satisfies expression (1): HTmax>HCmax (1), where HTmax is the height of the highest one among spikes 16t in the toe zone 20, and HCmax is the height of the highest one among spikes 16c in the center zone 22. The outsole 12 satisfies the expression (2): HHmax>HCmax (2), where HHmax is the height of the highest one among spikes 16h in the heel zone 24. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a golf shoe. Specifically, the present invention relates to an improvement in the outsole of a golf shoe.

  When a golfer hits a golf ball, the golf ball is addressed so that the line connecting the left and right toes is substantially parallel to the hitting direction. In the address of a right-handed golfer, the left foot is located on the front side in the batting direction and the right foot is located on the rear side in the batting direction. At the address, the golf club head is located near the golf ball. From this state, the golfer starts taking back and swings the head backward and then upwards. The position where the head is swung up is the top. A downswing is started from the top, the head is swung down, and the head collides with the golf ball (impact). After the impact, the golfer swings the golf club forward and then upward (follow-through). After the follow-through, the golf club stops (finish).

  A great force is applied to both legs of the golfer during the swing. This force can cause the golf shoe to slip with the ground. When slip occurs, the swing form is disturbed and a miss shot occurs. In particular, slip is likely to occur from the top to the impact.

  There are golf shoes having spike pins made of metal or ceramic on the bottom surface. Spike pins prevent slipping. However, in this golf shoe, spike pins damage the lawn on the green, the floor of the clubhouse, the road surface of the walking path provided in the golf course, and the like. Many golf courses prohibit the use of golf shoes with spike pins. Golf shoes with spike pins have a feeling of being pushed up from the bottom, and are not comfortable for golfers. Golf shoes with spike pins have not been used much in recent years.

  Golf shoes in which a protrusion made of rubber or synthetic resin is provided on the bottom instead of a spike pin are widely used. Such a golf shoe is disclosed in Japanese Patent Laid-Open No. 2003-204805. In this golf shoe, the lawn or the like is rarely damaged. This golf shoe is excellent in comfort. However, this golf shoe has insufficient anti-slip performance as compared with a golf shoe having spike pins.

  A right-handed golfer makes a body turn from the top to the finish with the left foot as the axis. At the same time, the golfer kicks the ground with his right foot and transmits the force to the golf ball. Right-handed golfers use the left foot as the axle and the right foot as the kick. For left-handed golfers, use the right foot as the axle and the left foot as the kick. Japanese Patent Application Laid-Open No. 2001-299406 discloses a golf shoe in which a difference in roles between a shaft foot and a kick foot is considered.

JP 2003-204805 A JP 2001-299406 A

  The anti-slip performance of the golf shoe provided with the protrusion is not sufficient as compared with that of the golf shoe provided with the spike pin. An object of the present invention is to provide a golf shoe excellent in anti-slip performance.

The golf shoe according to the present invention includes an outsole. The outsole has a base and a number of protrusions protruding from the base. This golf shoe satisfies the following mathematical formula (1).
HTmax> HCmax (1)
In this equation, HTmax is the height of the highest protrusion in the toe zone, and HCmax is the height of the highest protrusion in the center zone. The length of the longest line that can be drawn on the outline of the bottom surface of the outsole is length L, and the longest line passes through a point on the longest line whose distance from the toe side end of the longest line is 0.10 L, and When the straight line perpendicular to the longest line is the first comparting line, and the straight line passing through the point on the longest line whose distance from the heel side of the longest line is 0.10 L is the second comparting line The zone closer to the toe than the first lane marking is the toe zone, and the zone sandwiched between the first lane marking and the second lane marking is the center zone.

  Preferably, the difference between the height HTmax and HCmax is 0.3 mm or more.

Preferably, the golf shoe satisfies the following formula (2).
HHmax> HCmax (2)
In this equation, HHmax is the height of the highest protrusion in the heel zone. The zone on the heel side from the second lane marking is the heel zone.

  Preferably, the difference between the height HHmax and HCmax is 0.3 mm or more.

  When the golf shoe according to the present invention is worn on a shaft foot, a protrusion that exists in the toe zone and has a large height pierces the ground at the top. By this piercing, slipping of the shaft foot at the top is suppressed. When this golf shoe is worn on a kick foot, a projection that exists in the toe zone and has a large height pierces the ground in impact. By this piercing, slipping of the kick leg at impact is suppressed. This golf shoe is excellent in anti-slip performance.

FIG. 1 is a partially cutaway sectional view showing a golf shoe according to an embodiment of the present invention. FIG. 2 is a bottom view showing an outsole of the golf shoe of FIG. FIG. 3 is a cross-sectional view taken along line III-III in FIG.

  Hereinafter, the present invention will be described in detail based on preferred embodiments with appropriate reference to the drawings.

  A golf shoe 2 shown in FIG. 1 includes an upper 4 and a sole 6. The sole 6 includes an insole 8, a midsole 10 and an outsole 12. In FIG. 1, the reference numeral Y indicates the length direction, and the reference sign Z indicates the vertical direction.

  A known material is used for the upper 4. Natural leather, synthetic leather, artificial leather, woven fabric, or the like can be used for the upper 4. An inner material may be attached to the inner surface of the upper 4. A typical inner material is a woven fabric. A moisture-permeable waterproof material may be used as the inner material. A typical moisture-permeable waterproof material is a bootie made of GORE-TEX (registered trademark).

  The insole 8 is laminated with the midsole 10. The insole 8 is made of woven fabric or foamed synthetic resin. The insole 8 is in contact with the foot. The insole 8 contributes to the slipping of the foot in the operation of wearing the golf shoe 2. The insole 8 further contributes to comfort. The insole 8 may not be provided.

  The midsole 10 is made of a foam. Preferably, the midsole 10 includes a number of closed cells. At the time of landing, the midsole 10 undergoes compression deformation. The impact is absorbed by this compression deformation. A preferred base polymer in the midsole 10 is an ethylene-vinyl acetate copolymer (EVA). From the viewpoint of impact absorption, the midsole 10 has a hardness of preferably 70 or less, particularly preferably 65 or less. From the viewpoint of strength, the hardness is preferably 40 or more. The hardness is measured with a type A durometer in accordance with the rules of “JIS K 6253”.

  The outsole 12 is located below the midsole 10. Outsole 12 is joined to midsole 10. Bonding can be accomplished with an adhesive. The outsole 12 is made of a crosslinked rubber. Preferred base rubbers include natural rubber (NR), isoprene rubber (IR), butadiene rubber (BR), styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR) and urethane rubber. Synthetic resin or thermoplastic elastomer may be used for the outsole 12. The outsole 12 does not include bubbles. From the viewpoint of wear resistance, the hardness of the outsole 12 is preferably 70 or more, and particularly preferably 75 or more. From the viewpoint of followability to foot deformation, the hardness is preferably 85 or less, and particularly preferably 80 or less. The hardness is measured with a type A durometer in accordance with the rules of “JIS K 6253”.

  FIG. 2 shows the bottom surface of the outsole 12. In FIG. 2, what is indicated by a symbol X is the width direction. The outsole 12 is for the left foot. In other words, the outsole 12 is used for a shaft leg for a right-handed golfer and for a left-handed golfer. The outsole 12 for the right foot has a shape obtained by inverting the shape shown in FIG.

  As shown in FIGS. 2 and 3, the outsole 12 includes a base 14 and a number of protrusions 16. Each protrusion 16 protrudes downward in the vertical direction from the base 14. The protrusions 16 contribute to the slip resistance performance of the golf shoe 2. The protrusion 16 has a grounding surface 18. From the viewpoint of anti-slip performance, the distance between the protrusion 16 and the other protrusion 16 adjacent thereto is preferably 5 mm or more.

  In FIG. 2, the longest line is indicated by Sm. The longest line Sm is the longest line segment that can be drawn within the outline of the bottom surface of the outsole 12. The length of the longest line Sm is indicated by a symbol L. What is indicated by the symbol Pt is the toe side end of the longest line Sm, and what is indicated by the symbol Ph is the heel side end of the longest line Sm. The longest line Sm is along the length direction Y.

  FIG. 2 shows the first lane marking S1. The first lane marking S1 passes through the point P1. The distance between the point P1 and the toe side end Pt is 0.10 times the length L of the longest line Sm. The first lane marking S1 is orthogonal to the longest line Sm.

  FIG. 2 shows the second lane marking S2. The second lane marking S2 passes through the point P2. The distance between the point P2 and the heel side end Ph is 0.10 times the length L of the longest line Sm. The second lane marking S2 is orthogonal to the longest line Sm.

  As shown in FIG. 2, the bottom surface of the outsole 12 can be divided into a toe zone 20, a center zone 22, and a heel zone 24. The toe zone 20 is located closer to the toe side than the first lane marking S1. The center zone 22 is sandwiched between the first lane marking S1 and the second lane marking S2. The eaves zone 24 is located on the eaves side with respect to the second lane marking S2.

  Each of the toe zone 20, the center zone 22, and the heel zone 24 has a protrusion 16. The protrusion 16t whose grounding surface 18 is on the toe side of the first lane marking S1 belongs to the toe zone 20. The protrusion 16c in which the ground surface 18 is between the first lane marking S1 and the second lane marking S2 belongs to the center zone 22. The protrusion 16h in which the ground surface 18 is on the heel side with respect to the second lane marking S2 belongs to the heel zone 24.

  The ground surface 18 intersects the first lane marking S1 and the area of the ground surface 18 on the toe side of the first lane line S1 is the portion of the ground surface 18 that is on the heel side of the first lane line S1. A protrusion 16 larger than the area of the tip 16 belongs to the toe zone 20. The ground plane 18 intersects the first lane marking S1 and the area of the ground plane 18 that is on the heel side of the first lane marking S1 is the portion of the ground plane 18 that is closer to the toe than the first lane marking S1. The protrusions 16 larger than the area belong to the center zone 22.

  The ground surface 18 intersects the second lane line S2, and the area of the ground surface 18 that is closer to the toe side than the second lane line S2 is the portion of the ground surface 18 that is on the heel side from the second lane line S2. The protrusions 16 larger than the area belong to the center zone 22. The ground surface 18 intersects with the second lane line S2, and the area of the ground surface 18 that is on the heel side of the second lane line S2 is the portion of the ground surface 18 that is closer to the toe than the second lane line S2. The protrusions 16 that are larger than the area belong to the heel zone 24.

  In FIG. 3, what is indicated by the arrow HT is the height of the protrusion 16t existing in the toe zone 20, and what is indicated by the arrow HC is the height of the protrusion 16c existing in the center zone 22, What is indicated by an arrow HH is the height of the protrusion 16 h existing in the heel zone 24. From the viewpoint of anti-slip performance, the height (HT, HC and HH) of these protrusions 16 is preferably 2 mm or more, and particularly preferably 4 mm or more. From the viewpoint of the rigidity of the protrusion 16, this height is preferably 15 mm or less, and particularly preferably 12 mm or less.

The outsole 12 satisfies the following mathematical formula (1).
HTmax> HCmax (1)
In this equation, HTmax is the height of the highest protrusion 16t existing in the toe zone 20, and HCmax is the highest height of the protrusion 16c existing in the center zone 22. HTmax is greater than HCmax. In other words, the outsole 12 includes a protrusion 16t having a large height in the toe zone 20.

  A large force is applied to the toe zone 20 of the shaft foot at the top of the swing. When the golf shoe 2 is worn on a shaft foot, a protrusion 16t that exists in the toe zone 20 and has a large height pierces the ground at the top. Since the protrusion 16c existing in the center zone 22 is low, the protrusion 16t existing in the toe zone 20 is not disturbed. In this golf shoe 2, the slip of the shaft foot at the top is suppressed.

  In impact, a large force is applied to the toe zone 20 of the kick foot. When the golf shoe 2 is worn on a kick foot, the protrusion 16t that exists in the toe zone 20 and has a large height pierces the ground in impact. Since the protrusion 16c existing in the center zone 22 is low, the protrusion 16t existing in the toe zone 20 is not disturbed. In this golf shoe 2, slipping of the kick foot due to impact is suppressed.

  Preferably, the highest protrusion 16t among the protrusions 16t existing in the toe zone 20 exists inside the longest line Sm. The protrusion 16t sufficiently suppresses slip at the top and impact.

  All the protrusions 16t existing in the toe zone 20 may have a height HT larger than HCmax. A part of the protrusion 16t existing in the toe zone 20 may have a height HT larger than HCmax. The number of protrusions 16t present in the toe zone 20 and having a height HT larger than HCmax is preferably 2 or more, more preferably 3 or more, and particularly preferably 4 or more. The total number of protrusions 16t existing in the toe zone 20 is preferably 4 or more, and particularly preferably 6 or more.

  In light of anti-slip performance, the difference (HTmax−HCmax) is preferably equal to or greater than 0.5 mm, more preferably equal to or greater than 2.0 mm, and particularly preferably equal to or greater than 4.0 mm. From the viewpoints of prevention of wearing and comfort, the difference (HTmax−HCmax) is preferably 7.0 mm or less, and particularly preferably 5.0 mm or less.

Preferably, the outsole 12 satisfies the following mathematical formula (3).
HTave> HCave (3)
In this equation, HTave is an average value of the heights HT of all the protrusions 16t existing in the toe zone 20, and HCave is an average value of the heights HC of all the protrusions 16c existing in the center zone 22. The golf shoe 2 satisfying the mathematical formula (3) is excellent in anti-slip performance. In light of anti-slip performance, the difference (HTave−HCave) is preferably equal to or greater than 0.3 mm, more preferably equal to or greater than 1.0 mm, and particularly preferably equal to or greater than 2.0 mm. From the viewpoints of prevention of wearing and comfort, the difference (HTave−HCave) is preferably 7.0 mm or less, and particularly preferably 5.0 mm or less.

The ground contact area of the protrusion 16t existing in the toe zone 20 and having a height HT larger than HCmax is preferably 150 mm ² or less. The protrusion 16t having a ground contact area of 150 mm ² or less pierces the ground well. From this viewpoint, the ground contact area is more preferably 120 mm ² or less, particularly preferably 100 mm ² or less. The ground contact area is preferably 10 mm ² or more.

The outsole 12 satisfies the following mathematical formula (2).
HHmax> HCmax (2)
In this formula, HHmax is the height of the highest protrusion 16 h existing in the heel zone 24, and HCmax is the highest height of protrusions 16 c existing in the center zone 22. HHmax is larger than HCmax. In other words, the outsole 12 includes a protrusion 16 t having a large height in the heel zone 24.

  From the address to the top, the golfer's upper body is twisted against the lower body. In impact, the return of the twist causes the head of the golf club to move at a high speed. This twist applies a rotational force to the golf shoe 2 of the kick foot. Specifically, the force in the direction in which the toe moves to the outside and the heel moves to the inside is applied to the golf shoe 2.

  When the golf shoe 2 is worn on a kick foot, the protrusion 16t that exists in the toe zone 20 and has a large height, and the protrusion 16h that exists in the heel zone 24 and has a large height pierce the ground. The rotation of the golf shoe 2 is suppressed by the piercing of these protrusions 16. The golfer wearing this golf shoe 2 can sufficiently twist the upper body with respect to the lower body.

  In impact, a rotational force is applied to the golf shoe 2 of the shaft foot. Specifically, the force in the direction in which the toe moves to the outside and the heel moves to the inside is applied to the golf shoe 2. When the golf shoe 2 is worn on the axle, the protrusion 16t that exists in the toe zone 20 and has a large height, and the protrusion 16h that exists in the heel zone 24 and has a large height pierce the ground. The rotation of the golf shoe 2 is suppressed by the piercing of these protrusions 16. In the swing in which the rotation of the pivotal golf shoe 2 is suppressed, the energy transmitted to the golf ball is large.

  All the protrusions 16h existing in the heel zone 24 may have a height HH larger than HCmax. A part of the protrusion 16h existing in the heel zone 24 may have a height HH larger than HCmax. The number of protrusions 16h present in the heel zone 24 and having a height HH larger than HCmax is preferably 2 or more, more preferably 3 or more, and particularly preferably 4 or more. The total number of protrusions 16h present in the heel zone 24 is preferably 4 or more, and particularly preferably 6 or more.

  In light of anti-slip performance, the difference (HHmax−HCmax) is preferably equal to or greater than 0.5 mm, more preferably equal to or greater than 2.0 mm, and particularly preferably equal to or greater than 4.0 mm. From the viewpoints of prevention of wearing and comfort, the difference (HHmax−HCmax) is preferably 7.0 mm or less, and particularly preferably 5.0 mm or less.

Preferably, the outsole 12 satisfies the following mathematical formula (4).
HHave> HCave (4)
In this equation, HHave is an average value of the heights HH of all the protrusions 16t existing in the heel zone 24, and HCave is an average value of the heights HC of all the protrusions 16c existing in the center zone 22. The golf shoe 2 satisfying the mathematical formula (4) is excellent in anti-slip performance. In light of anti-slip performance, the difference (HHave−HCave) is preferably equal to or greater than 0.3 mm, more preferably equal to or greater than 1.0 mm, and particularly preferably equal to or greater than 2.0 mm. From the viewpoints of prevention of wearing and comfort, the difference (HHave−HCave) is preferably 7.0 mm or less, and particularly preferably 5.0 mm or less.

The ground contact area of the protrusion 16h existing in the heel zone 24 and having a height HH larger than HCmax is preferably 150 mm ² or less. The protrusion 16h having a ground contact area of 150 mm ² or less pierces the ground well. From this viewpoint, the ground contact area is more preferably 120 mm ² or less, particularly preferably 100 mm ² or less. The ground contact area is preferably 10 mm ² or more.

  Hereinafter, the effects of the present invention will be clarified by examples. However, the present invention should not be construed in a limited manner based on the description of the examples.

[Example 1]
100 parts by mass of acrylonitrile-butadiene rubber (trade name “Nippol DN200” from ZEON Corporation), 45 parts by mass of silica (trade name “Ultrazil VN3” from Degussa), 4.0 parts by mass as a silane coupling agent Bis- (3-triethoxysilylpropyl) tetrasulfene (trade name “Si69” of Degussa), 2.0 parts by weight of dioctyl phthalate as a plasticizer (trade name “DOP” of Sanken Chemical Co., Ltd.), 2.0 parts by mass of 2,6-di-tert-butyl-4-methylphenol (trade name “NOCRACK 200” from Ouchi Shinsei Chemical Co., Ltd.) as an anti-aging agent, 0.5 parts by mass of other aging The inhibitor “trade name“ Sunnock N ”from Ouchi Shinsei Chemical Industry Co., Ltd.), 3.0 parts by mass of zinc oxide and 1.0 part by mass of stearic acid were kneaded with a Banbury mixer and mixed. I got a paste. This kneaded product is put into an open roll, 0.5 parts by mass of sulfur, 1.3 parts by mass of dibenzothiazyl disulfide as a vulcanization accelerator (trade name “Noxeller DM” from Ouchi Shinsei Chemical Co., Ltd.), 0.7 parts by mass of tetraethylthiuram disulfide (trade name “Noxeller TET” from Ouchi Shinsei Chemical Co., Ltd.) as another vulcanization accelerator and 0.1 part by mass of di- o-Tolylguanidine (trade name “Noxeller DT” from Ouchi Shinsei Chemical Co., Ltd.) was added and kneaded to obtain a rubber composition. This rubber composition was filled into a cavity of a mold. And it pressurized and heated for 8 minutes at the temperature of 160 degreeC, and the outsole was obtained. This outsole has the shape shown in FIGS. A midsole, an insole, and an upper were attached to the outsole to obtain a golf shoe of Example 1.

  This golf shoe includes eight protrusions that are present in the toe zone and have a height of 9.0 mm. This golf shoe has 81 protrusions that are present in the center zone and have a height of 5.0 mm. This golf shoe includes eight protrusions that are present in the heel zone and have a height of 5.0 mm.

[Example 2-4 and Comparative Example]
Golf shoes of Examples 2-4 and Comparative Examples were obtained in the same manner as in Example 1 except that other molds were used and the heights of the protrusions in the toe zone were as shown in Table 1 below.

[Example 5-8]
Golf shoes of Example 5-8 were obtained in the same manner as in Example 1 except that other molds were used and the height of the protrusions in the heel zone was as shown in Table 2 below.

[Example 9-10]
Golf shoes of Examples 9-10 were obtained in the same manner as in Example 1 except that other molds were used and the heights of the protrusions in the toe zone were as shown in Table 3 below. In the toe zone of the golf shoe of Example 9, there are six protrusions having a height of 5.0 mm and two protrusions having a height of 9.0 mm. In the toe zone of the golf shoe of Example 10, there are four protrusions having a height of 5.0 mm and four protrusions having a height of 9.0 mm.

[Examples 11-12]
Golf shoes of Examples 11-12 were obtained in the same manner as in Example 1 except that other molds were used and the height of the protrusions in the heel zone was as shown in Table 3 below. In the heel zone of the golf shoe of Example 11, there are six protrusions having a height of 5.0 mm and two protrusions having a height of 9.0 mm. In the heel zone of the golf shoe of Example 12, there are four protrusions having a height of 5.0 mm and four protrusions having a height of 9.0 mm.

[Anti-slip performance]
A golf shoe was worn by a golfer, and a golf ball was hit with a driver on the golf course tee. Ten golfers were rated for anti-slip performance. This average value is shown in Tables 1 to 3 below. A larger value is more preferable.

[Difficulty to whisper]
Golf shoes were worn by golfers, and the golf course fairway was walked. Ten golfers were rated for difficulty in hitting. This average value is shown in Tables 1 to 3 below. A larger value is more preferable.

  As shown in Tables 1 to 3, the golf shoes of the examples are excellent in anti-slip performance. From this evaluation result, the superiority of the present invention is clear.

  The golf shoe according to the present invention can be worn when playing on a golf course. This golf shoe can also be worn during practice in the driving range.

2 ... Golf shoes 12 ... Outsole 14 ... Base 16, 16t, 16c, 16h ... Projection 18 ... Grounding surface 20 ... Toe zone 22 ... Center zone 24 ...踵 Zone Sm ... Longest line S1 ... First lane marking S2 ... Second lane marking

Claims (4)

A golf shoe having an outsole having a base and a large number of protrusions protruding from the base and satisfying the following mathematical formula (1).
HTmax> HCmax (1)
(In this equation, HTmax is the height of the highest protrusion in the toe zone, and HCmax is the height of the highest protrusion in the center zone. Outline of the bottom surface of the outsole The length of the longest line that can be drawn is the length L, and a straight line that passes through a point on the longest line whose distance from the toe side end of the longest line is 0.10 L and is orthogonal to the longest line is the first section When a straight line that passes through a point on the longest line having a distance from the heel side end of the longest line of 0.10 L and is orthogonal to the longest line is a second comparting line, the first comparting line (The zone on the toe side is the toe zone, and the zone sandwiched between the first and second lane markings is the center zone.)   The golf shoe according to claim 1, wherein a difference between the height HTmax and HCmax is 0.3 mm or more. The golf shoe according to claim 1 or 2 satisfying the following mathematical formula (2).
HHmax> HCmax (2)
(In this equation, HHmax is the height of the highest protrusion in the heel zone. The zone on the heel side of the second lane marking is the heel zone.)   The golf shoe according to claim 3, wherein a difference between the height HHmax and HCmax is 0.3 mm or more.

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