JPH10174604A - Spike pin and sole with spike pin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relax the sensation of upward thrusts by the subsidence of spike pins to a sole main body, which is a drawback to soles of a expanded synthetic resin which is lightweight, highly flexible, and comfortable to wear, and to enable effective gripping to the ground. SOLUTION: In a spike pin 1, a flange is formed at the base bottom part of a spike pin main body of a metal, hard ceramic, or cermet and surrounded by a plate of a synthetic resin, and the periphery of the plate is shaped into an incomplete circle. The spike pins 1 are fixed or embedded to the bottom surface of a sole main body 9 formed of an expanded synthetic resin. In this case, the spike pins 1 are arranged on a part of the sole bottom surface where shearing stress concentrates, and the plates in the shape of an incomplete circle are fixed or embedded according to the directions of shearing stress.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spike pin mainly used for a spike shoe for a golf game and a shoe sole of the spike shoe using the spike pin, which is lightweight, flexible, and comfortable to wear. A spike pin and a shoe sole of a spike shoe, which can alleviate the feeling of the spike pin sinking into the sole body, which is a drawback of a good foam synthetic resin shoe sole, and can effectively grip the ground. It is about.

[0002]

2. Description of the Related Art Conventionally, shoe soles made of foamed EVA (ethylene-vinyl acetate copolymer) resin, foamed PU (polyurethane) resin, or foamed rubber resin have been widely used as shoe sole materials. Further, the foamed synthetic resin is also used in various sports shoes, and particularly in spike shoes for golf sports, since it is a lightweight and highly flexible material, it is frequently used. A so-called fixed type spike shoe, which is a type in which a spike shoe for golf competition is fixed to a circular flange at the base of the spike pin main body and the flange and the base of the spike pin are embedded and fixed in the sole body of the shoe, A so-called replaceable spike shoe, which is a type in which a socket portion in which a nut is fixed to a flange is embedded in a shoe sole body and a bolt portion of a spike pin body formed separately is detachably screwed to the nut. Divided.
In each case, the spike pins are fixed to the shoe sole body via a circular flange attached to the spike pin body and the nut to disperse the pressure received from the ground.

[0003]

However, the shoe sole body made of a synthetic resin foam is rich in flexibility, but the spike pin cannot fully absorb the pressure received from the ground, and the spike pin sinks into the shoe sole body. The flange to which the spike pin was fixed pushed up the sole body of the shoe, giving an unpleasant thrust to the sole of the wearer. Also, during walking or swinging, the spike pin receives shearing force from an oblique direction immediately before piercing the ground, immediately before coming out of the ground, or when stepping on the foot, causing the spike pin to collapse, and is formed of a hard material. The flange was partially buried in the sole body of the shoe and repeatedly pressed against the sole of the wearer, resulting in so-called beans. For this reason, the thrust is reduced by increasing the diameter of the flange to disperse the pressure or by bonding an outsole made of a hard synthetic resin to the bottom surface of the shoe sole. However, increasing the diameter of the flange leads to an increase in the weight of the entire shoe, and also has the disadvantage that a large-diameter flange cannot be used in a narrow region such as a toe portion or a bent portion that is repeatedly bent and stretched. In addition, the fall just before piercing the ground prevents the spike pin from accurately piercing the ground, it can not accurately transmit the force of the kicking foot to the ground, and the spike pin breaks due to diagonal stress There were inconveniences such as. Therefore, there has been a demand for a technique for preventing the spike pins from sinking or falling down while having flexibility so as not to hinder the flexibility of the sole.

[0004]

Therefore, when a shearing force is applied to the spike pin main body, the spike pin causes the flange provided at the base of the spike pin to be non-true, such as an egg shape formed of a hard synthetic resin. The plate was surrounded by a circular plate, and the plate was fixed with the longitudinal direction of the plate aligned with the direction in which shearing force was applied. The spike pin according to the present invention is a spike pin fixed or embedded in the sole of a spike shoe,
A spike characterized in that a flange is formed at the base of a spike pin body made of metal or hard ceramics, the flange is surrounded by a plate made of synthetic resin, and the outer peripheral shape of the plate is formed in an oval shape. It is a pin.

[0005] A shoe sole according to the present invention is a shoe sole of a spike shoe in which the spike pin is fixed or embedded in the sole surface of a shoe sole body made of a foamed synthetic resin having excellent lightweight and flexibility. A spike shoe wherein the spike pin is installed at a shear stress concentration site on the bottom surface of the shoe sole, and the pointed end of the egg-shaped plate is fixed or buried according to the direction in which the shear stress is applied. The sole of the shoe.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The invention according to the present application encloses a flange provided at the base of a spike pin with a non-circular plate such as an oval made of a hard synthetic resin and applies the plate in a direction in which a shear force is applied. And fixed along the major axis direction. That is, the spike pin according to the present invention is a spike pin fixed or buried in the sole of a spike shoe, and a flange made of an aluminum alloy or the like is formed at the base of a spike pin body made of metal or hard ceramic. The spike pin is characterized in that the flange is surrounded by a plate made of a synthetic resin such as a polyurethane resin, a polyamide resin, or a polycarbonate resin, and the outer peripheral shape of the plate is formed in an egg shape.

The material used for the spike pin body is
Alloys such as stainless steel, carbon steel, bearing steel, high-speed steel or cemented carbide steel, or ceramics such as zirconia, alumina or titanium carbide ceramics, or various cermets or other materials with excellent wear resistance and impact strength You can choose from. The shape of the spike pin body may be a conventionally used truncated cone or a base having a base slightly wider than the bottom near the bottom of the truncated cone, or a truncated cone with respect to the base. A portion whose portion is formed with an inclination can be appropriately selected. Furthermore,
A part of the side surface of the pin body is chamfered in the vertical direction to provide a cutout surface, so that it is possible to improve the grip force on the ground.

The flange formed at the base of the spike pin main body is mainly made of a light metal such as an aluminum alloy, a zinc alloy or a brass cast, which is lightweight and can be plastically worked. The flange and the spike pin main body are fixed to the spike pin main body by a forging method conventionally used, for example, a method disclosed in Japanese Patent No. 1650812. Further, the spike pin body and the flange can be integrally formed of the same material by forging or cutting.

The synthetic resin plate is a relatively hard synthetic resin such as a polyurethane resin, a polyamide resin, a polyethylene resin or a polycarbonate resin, and has a hardness at least higher than the material used for the sole body of the spike shoes. Is used. For example, when a polycarbonate resin is used, the flexural modulus is 10,000 k.
A thermoplastic resin of g / cm ^{2 to} 30,000 kg / cm ² is suitable. In selecting these synthetic resins, the selection is made in consideration of the quality of adhesion to the foamable synthetic resin used for the sole body of the shoe. The plate is generally formed by an injection method using a molding die. That is, a spike pin main body to which the flange is fixed is set in a molding die, and after closing the die, a predetermined resin is injected to be molded.

The shape of the flange has a non-perfect outer peripheral shape and can be appropriately selected from an oval shape, a rectangular shape, an oval shape, and the like. Shapes are preferred. The egg-shaped plate
The spike pin body is composed of a rounded bulging portion and a sharp point, and the spike pin body is buried near the center of the bulging portion of the plate so that its axis matches.

That is, the shape of the egg-shaped plate has a length of about 20 mm to 35 mm and a width of about 15 mm to 25 mm, and the pointed tip has a radius of curvature of about 3 mm to 8 mm and a bulging portion that is bulged round. The radius of curvature is 7.5 mm to 12.5
mm is preferable, and a shape connected by a smooth curve over the entire circumference is preferable. The thickness of the plate is about 5 mm to 10 mm, and may be uniform. However, it is preferable that the portion surrounding the flange is made slightly thicker and formed into a shape that can withstand the shear stress received from the flange. . Further, a concave notch or a through hole may be provided on the back surface of the plate for the purpose of reducing the weight of the plate and increasing the adhesion between the plate and the sole body, but these structures only reduce the rigidity of the plate. It must not be too much.

Further, the shoe sole according to the present invention is a shoe sole of a spike shoe in which the spike pin is fixed to or embedded in a shoe sole body made of a foamed synthetic resin having excellent lightness and flexibility. A shoe for a spike shoe, wherein the spike pin is installed at a site of shear stress concentration on the bottom surface of the shoe sole, and the pointed end of the egg-shaped plate is fixed or buried in a direction in which a shear force is applied. The bottom. The material of the sole body is preferably a foamed synthetic resin which has been conventionally used, and examples thereof include foamed EVA (ethylene-vinyl acetate copolymer) resin, foamed PU (polyurethane) resin, foamed rubber resin and the like. Can be selected as appropriate.

Further, in order to enhance the effect of preventing the spike pins from sinking or falling down, the spike pins are fixed or embedded in the insole made of a foamed synthetic resin having excellent lightness and flexibility. It is also possible to laminate and integrate the synthetic resin plates having the same. Also in this case, the spike pin is installed at a site where the shear force is concentrated on the bottom surface of the shoe sole,
The long axis direction of the non-circular plate such as the egg shape is fixed or buried in a direction in which a shear force is applied. The insole is preferably made of a foamed synthetic resin used for the shoe sole body according to the present invention.
(Ethylene-vinyl acetate copolymer) resin, foamed PU (polyurethane) resin, foamed rubber resin and the like can be appropriately selected. The synthetic resin plate to which the spike pins are fixed or embedded has appropriate rigidity and flexibility, and has a function of alleviating the feeling of pushing up the spike pins and improving the so-called warpage of the shoe sole. The synthetic resin used for the synthetic resin plate is preferably formed of a material of the same quality as the plate in consideration of the adhesiveness of the spike pin to the plate, but is appropriately selected from polyurethane resin, polyamide resin, polyethylene resin, and the like. it can.

The position where the spike pin is provided and the orientation of the non-circular flange are determined by a shear force measurement method. In other words, the golfer's series of hitting motions is divided into three phases during takeback, downswing and follow-through, and the shearing force applied to the shoe sole is measured in each phase, and the largest shearing force in each phase is measured. Such a region is defined as a shear stress concentration site, and the direction of the shear stress at the site is determined. As described above, the spike pins are provided at the determined shear stress concentration site, and the plate is installed so as to match the direction of the shear stress. The tip of the plate is provided so as to match the direction of the shear stress, or the tip is provided so as to be exactly opposite to the direction of the shear stress. By doing so, the moment about the short axis that the spike pin body subjected to the shear stress exerts on the plate via the flange is effectively canceled by the reaction force received from the sole body.

The method of fixing the spike pin to the sole body is as follows.
Conventionally used thermoforming methods are preferred. In this case, after performing a primer process on the back surface of the plate, the plate is set in a thermoforming mold, and a sheet of a foamed synthetic resin cut into a desired shape is stacked and arranged thereon, and after closing the upper mold, heating is performed. , And pressurized to fix them together. Further, as another fixing method, a conventionally used direct injection manufacturing method can be used. That is, the spike pin composed of the spike pin body, the flange and the plate is set in a shoe sole molding die, and a foam synthetic resin is injected into the mold to mold the shoe sole body and simultaneously bond the spike pins.

It is also possible to provide a plurality of auxiliary projections on the upper surface of the egg-shaped plate for the purpose of reinforcing the slip resistance of the spike pin. The shape of the auxiliary projection can be appropriately selected from a conical shape, a pyramid shape, and the like.

[0017]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a spike pin according to an embodiment of the present invention, and a sectional view of a main part. FIG. 2 is a plan view of a shoe sole body on which a spike pin according to the present invention is installed. FIG. 3 is a conceptual diagram showing a state where a shear stress is applied to the spike pin according to the present invention and a conventional spike pin. FIG. 4 is a diagram showing the direction of shear stress applied to each spike pin when a golfer wearing a golf shoe using the shoe sole according to the present invention makes a series of swings.

As shown in FIG. 1, the invention according to the present application is a spike pin in which a flange 4 provided on a base portion 7 of a spike pin main body 2 is surrounded by a non-circular plate 3 such as an oval made of a hard synthetic resin. It is one. That is, the spike pin 1 according to the present embodiment is a spike pin fixed or buried in the sole of a spike shoe, and a flange 4 made of an aluminum alloy is formed on a base 7 of the spike pin main body 2 made of zirconia ceramic. A spike pin, wherein the flange 4 is surrounded by a plate 4 made of polyurethane resin, and the outer peripheral shape of the plate 4 is formed in an egg shape having a bulging portion 5 and a pointed end 6. It is one.

As another embodiment, the material used for the spike pin body 2 is an alloy such as stainless steel, carbon steel, bearing steel, high-speed steel or cemented steel, or zirconia-based, alumina-based, titanium carbide-based ceramics. The material can be selected from materials having excellent wear resistance and impact strength, such as ceramics and various cermets. The shape of the spike pin main body 2 may be a conventionally used truncated cone, a base 7 slightly wider than the bottom near the bottom of the truncated cone, or a cone with respect to the base. It can be selected as appropriate, such as one having a pedestal portion formed with an inclination. Furthermore, the notch surface 8 can be formed in a part of the truncated cone portion to enhance the grip on the ground. In this embodiment, a part of the side surface of the spike pin main body 2 is chamfered in the vertical direction to form a cutout surface 8 to improve the grip force on the ground. The flange formed on the base 7 of the spike pin main body 2 is made of an aluminum alloy in this embodiment. However, in another embodiment, a relatively lightweight plastic working such as zinc alloy or brass casting is possible. Light metals can be used.

The flange 4 and the spike pin main body 2 are fixed to each other by a forging method conventionally used, for example, a method disclosed in Japanese Patent No. 1650812, in a sleeve made of an aluminum alloy. Was installed, and the flange 4 was formed by caulking with a die, and the method of fixing the flange 4 to the spike pin main body 2 was used.

In the present embodiment, the synthetic resin plate 3 is made of a polyurethane resin. In another embodiment, the plate 3 is made of a relatively hard synthetic resin such as a polyamide resin, a polyethylene resin or a polycarbonate resin. It is also possible to use a synthetic resin having a higher hardness than the material used for the sole body of the spike shoes. For example, when a polyurethane resin or a polycarbonate resin is used, the flexural modulus is 10,000 kg / cm ² to 30 kg.
A thermoplastic resin of 000 kg / cm ² is preferred. When selecting these synthetic resins, they are selected in consideration of the quality of adhesion to the foamable synthetic resin used for the shoe sole body 9. The plate 3 is generally formed by an injection method using a molding die.
That is, the spike pin main body 2 to which the flange 4 is fixed is set in a molding die, and after closing the die, a predetermined resin is injected to be molded.

The shape of the flange is such that the outer peripheral shape is a non-circular shape and can be appropriately selected from an elliptical shape, a rectangular shape, an oval shape and the like. As shown in FIG. 1, an egg shape is preferred. In this case, the egg-shaped plate 3 is composed of a rounded bulging portion 5 and a sharp point 6. The spike pin main body 2 has a shaft center near the center of the bulging portion 5 of the plate 3. It is buried to match. For this reason, when the spike pin main body 2 receives the shear stress F from the ground as shown in FIG. 3, a rotational movement occurs with the part slightly bulged from the axis of the spike pin main body 2 as the rotation center O. The back of the plate exerts a pressure fp on the sole body 9. On the other hand, the sole body 9
Exerts a pressure fs on the back surface of the plate against the pressure fp due to its elasticity. In this case, in the conventional circular spike pin, the distance between the center of the pressure exerted on the shoe sole by the plate and the center of rotation O is short, so that the value of fp itself must be increased in order to resist the shear stress. The pressure fs exerted on the plate by the sole, which is a reaction of the pressure fp exerted on the sole by the plate, is proportional to the magnitude of the elastic deformation of the sole body 9, but since this fs is large, the amount of deformation of the sole body becomes large. Was felt as an unpleasant thrust on the sole of the wearer. In the case of the spike pin according to the present invention, since the plate has the pointed portion 6, the distance between the center of pressure from the plate and the center of rotation O increases, so that the pressure fp exerted on the shoe sole by the plate and its reaction force As a result, the pressure fs exerted on the plate by the sole becomes relatively small. As a result, the amount of deformation of the sole body 9 can be reduced, and the sole body 9 can be prevented from being lifted. for that reason,
There is no unpleasant thrust on the sole of the wearer.

In this embodiment, the plate 3 has a length of 23.5.
mm, the width is about 17.0 mm, and the pointed tip has a radius of curvature of about 6,0 mm, and the bulging part which is rounded and bulged preferably has a radius of curvature of about 10.5 mm, and has a smooth curve over the entire circumference. It was a connected oval shape. The plate 3
Has a thickness of about 6.5 mm and may have a uniform thickness. However, the portion surrounding the flange 4 is slightly thickened and formed into a shape that can withstand the shear stress received from the flange 4. Further, the weight of the plate 3 is reduced.
Plate 3 for the purpose of enhancing the adhesion between the sole 3 and the sole body 9.
Is provided with a concave notch 11 on the back surface. Therefore, when the shoe sole body is molded by the injection manufacturing method, the foamed resin is filled in the concave notch 11 and the contact area increases, so that the adhesive strength is improved.

Further, the shoe sole according to the present invention is a shoe of a spike shoe in which the spike pin 1 is fixed to or embedded in a sole body 9 made of a foamed synthetic resin having excellent lightness and flexibility. The bottom, wherein the spike pin 1 is installed at a shear stress concentration site on the sole surface of the shoe, and the pointed end 6 of the egg-shaped plate 3 is fixed or embedded according to the direction in which the shear stress is applied. Is the sole of a spike shoe. The material of the shoe sole body 9 is preferably a conventionally used synthetic foam resin, and in this embodiment,
Although a foamed EVA (ethylene vinyl acetate copolymer) resin was used, in another embodiment, a foamed PU (polyurethane) resin,
It can be appropriately selected from foamed rubber resins and the like.

The position where the spike pin 1 is provided is determined by the above-mentioned shear stress measuring method. That is, the golfer's series of hitting actions is divided into three phases during takeback, downswing and follow-through, and the shear stress applied to the shoe sole is measured at each phase, and the shear stress at each phase is maximized. Is determined as the shear stress concentration site, and the direction of the shear stress at the site is determined. As described above, the spike pins 1 are provided at the determined shear stress concentration sites. The spike pins 1 are installed so that the long axis direction of the non-circular plate matches the direction of the shear stress. In the case of the egg-shaped plate 3 according to the present embodiment, the tip 6 is provided so as to match the direction of the shear stress,
Alternatively, the pointed portion 6 is provided so as to be exactly opposite to the direction of the shear stress. By doing so, the moment exerted by the spike pin body 2 subjected to the shear stress in the longitudinal direction of the plate 3 via the flange 4 is effectively canceled by the reaction force received from the sole body.

As a method for fixing the spike pins 1 to the sole body 9, a conventionally used thermoforming method is preferable. In this case, after a primer process is performed on the back surface of the plate 3, the sheet is set in a thermoforming mold, and a sheet of a foamed synthetic resin cut into a desired shape is laminated and arranged thereon, and after closing the upper mold, Heat and press to fix together. Further, as another fixing method, a conventionally used direct injection manufacturing method can be used.

Although not shown, a plurality of auxiliary projections can be provided on the upper surface of the egg-shaped plate 3 for the purpose of reinforcing the slip resistance of the spike pin 1. The shape of the auxiliary projection can be appropriately selected from a conical shape, a pyramid shape, and the like.

[0028]

As described above, the present invention has the following advantages. The spike pin according to the present invention can effectively prevent the spike pin from elastically sinking into the sole body and the spike pin body from falling down by having a non-circular plate such as an egg-shaped plate. . In addition, since the direction of the plate is determined in accordance with the direction of the shear stress having different directions depending on the portion where the spike pin is arranged and fixed to the sole body of the shoe, a large and heavy flange like a conventional spike pin is used. And the flexibility of the sole body is not impaired.

[Brief description of the drawings]

FIG. 1 is a plan view of a spike pin according to the present invention, and a cross-sectional view taken along line XX and a line YY in the plan view.

FIG. 2 is a plan view of a shoe sole body according to the present invention.

FIG. 3 is a conceptual diagram showing the behavior of a spike pin according to the present invention and a conventional spike pin when shear stress is applied to the spike pin.

FIG. 4 is a view showing the direction of shear stress applied to each spike pin when a golfer wearing a golf shoe using the shoe sole according to the present invention makes a series of swings.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 spike pin 2 spike pin main body 3 plate 3 a plate back surface 4 flange 5 bulging portion 6 pointed end 7 spike pin base 8 cutout surface 9 shoe sole body 10 circular spike pin 11 concave notch

Claims (6)

[Claims] 1. A spike pin fixed or buried in a sole of a spike shoe, wherein a flange is formed at a base of a spike pin body made of metal, hard ceramics or cermet, and the flange is made of synthetic resin. A spike pin, wherein the outer shape of the plate is formed in a non-circular shape. 2. The spike pin according to claim 1, wherein an outer peripheral shape of the plate is formed in an oval shape. 3. A spike pin having a plate formed in a non-circular shape according to claim 1 is fixed to a sole surface of a sole of a sole made of a foamed synthetic resin excellent in lightweight and flexibility. A shoe sole of a spike shoe which is buried, wherein the spike pin is installed at a shear stress concentration site on the sole surface of the shoe, and a long axis direction of the non-circular plate is aligned with a direction in which shear stress is applied. A shoe sole of a spike shoe, which is fixed or buried. 4. A shoe sole of a spike shoe, wherein the spike pin according to claim 2 is fixed to or embedded in a shoe sole body made of a foamed synthetic resin excellent in lightweight and flexibility. The spike pin is installed at a shear stress concentration site on the bottom surface of the shoe sole, and the pointed side of the egg-shaped plate is fixed or buried according to the direction in which the shear stress is applied. . 5. The spike pin having the non-circular plate according to claim 1 is fixed or embedded on an insole made of a foamed synthetic resin excellent in lightweight and flexibility. A shoe sole of a spike shoe in which a synthetic resin plate is laminated and integrated, wherein the spike pin is disposed at a shear stress concentration site on the shoe sole bottom surface, and a long axis direction of the non-circular plate is subjected to shear stress. A shoe sole of a spike shoe, which is fixed or buried according to a direction. 6. A flexible synthetic resin in which the spike pin having the egg-shaped plate according to claim 2 is fixed or buried in an insole made of a foamed synthetic resin excellent in lightness and flexibility. A shoe sole of a spike shoe in which boards are laminated and integrated, wherein the spike pin is installed at a shear stress concentration site on the sole bottom of the shoe, and the pointed side of the egg-shaped plate is aligned with the direction in which shear stress is applied. A shoe sole of a spike shoe, which is fixed or buried.