JP3483510B2 - Resin spike - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin spike mounted on the sole of a golf shoe.

[0002]

2. Description of the Related Art In general, a resin spike of this type has a plurality of anti-slip projections projecting from the grounding surface side of a base portion that abuts on a shoe sole. There are two types of shapes. One of them is, for example, as disclosed in Japanese Unexamined Patent Publication No. 11-225806, an upright projection portion having opposing side surfaces both having a shape closed perpendicular to the horizontal plane of the base portion or inclined at an acute angle. is there. The other is, for example, Japanese Patent Laid-Open No. 11-2624.
As disclosed in 01 JP, side said base over scan
The inclined projection portion has a shape that is inclined with respect to the horizontal plane of the portion and is opened to the side.

[0003]

When a load is applied in the vertical direction when walking on a hard road surface, etc., the upright projection described above has a high rigidity in this direction and is difficult to be deformed. It has excellent durability such as shape retention and abrasion resistance. However, as shown in FIG. 6, when an excessive shearing force S is applied to such an upright protrusion 33 during a golf swing,
There was a problem that the grip force between the upright projection 33 and the lawn 35 could not resist the shearing force S and was slippery. In the figure,
Reference numeral 31 indicates a shoe sole, and 32 indicates a base portion of a resin spike. On the other hand, as shown in FIG.
No. 4 has a much better grip than the upright protrusion 32. However, such a slanted protrusion 34, when a load is applied in the vertical direction when walking on a hard road surface 36,
As shown in FIG. 8, there is a risk of deformation due to insufficient rigidity near the top of the inclined protrusion 34. Then, when such deformation is repeated each time the user walks, the inclined protrusion is completely deformed due to permanent strain, and the original shape cannot be maintained, so that there is a problem that the grip force is significantly reduced. Further, if such deformation is excessive, chipping (chip) may occur in the inclined protrusion 34.

The present invention solves the above-mentioned problems, and a resin spike excellent in durability such as shape retention and abrasion resistance of anti-slip protrusions while maintaining high gripping force. Is intended to provide.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is such that a plurality of anti-slip projections are provided on the grounding surface side of the base portion which abuts on the shoe sole. In the resin spike which is, as the non-slip protrusion, an inclined protrusion having a shape in which the elevation angle of at least one generatrix of the opposite side faces is inclined to the horizontal plane of the base portion at an obtuse angle and opened laterally, , Upright projections in which the elevation angles of all generatrixes of the opposite side surfaces are inclined and closed at an acute angle
And are alternately arranged along the peripheral portion of the base portion.
It is characterized by being By arranging in this way the inclined projection portion and with said upstanding projections, it is possible to disperse the load at the time of use, while compensating both disadvantages, the
It is possible to prevent the deformation of the inclined projections in a well-balanced
Resin spikes that can show good grip
Is obtained.

The invention according to claim 2 is the resin spike characterized in that the inclined projection has a shape that is inclined to the outside in the radial direction at an obtuse angle and opened to the side. Such a slanting protrusion exhibits good gripping force in all directions of the horizontal surface of the base portion.

Further, the invention according to claim 3 is characterized in that the inclined projection portion is formed into an obtuse angle in the circumferential direction or in a tangential direction of the outer periphery of the base portion and opened to the lateral side. It is made of spikes. Such an inclined protrusion is
Since it extends in the circumferential direction, it is possible to increase the grip force against the force that attempts to rotate around the central axis of the base portion, and the grip property with respect to the twisting force applied to the shoe sole during the swing is excellent.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

The resin spike according to the present invention has an attaching means such as an attaching screw shaft for attaching the spike to the shoe sole in the base portion. The mounting screw shaft is generally formed by insert-molding a metal screw shaft into the base portion to form an integrated structure. However, when the base portion is made of a high hardness resin material, the base is It is also possible to integrally form the mounting screw shaft with the same material as the part.

The resin material used for the resin-made spike according to the present invention includes JIS A hardness of 65 to 100, or SH.
There are polyurethane resin, polyamide resin, polycarbonate resin, polyacetal resin, etc. having an ORED hardness of about 45 to 70, preferably about 90 of JISA, and
As the abrasion-resistant resin, resins obtained by mixing glass fibers and carbon fibers with the above-mentioned various resins and strengthening them are preferable.

The base portion has a diameter of 18.0 mm to 2
The inclined protrusion and the upright protrusion, which have a disk shape of about 5.0 mm and are provided as a non-slip member on the grounding surface side of the base portion, are integrally molded with the same resin material as the base portion. However, it is also possible to mold the entire both protrusions or only the grounded portion near the tips of the both protrusions with the wear resistant resin.

Inclination of the side surface of the inclined projection portion that is inclined to the horizontal plane of the base portion at an obtuse angle and has a shape that is opened laterally.
The angle of inclination is about 95 ° to 135 °, preferably about 110 °. The angle of inclination of the side surface is less than 95 ° or 13
When the angle is 5 ° or more, the gripping force of the inclined protrusions is significantly reduced.

Further, the inclination angle of the opposite side surfaces of the upright projections which are perpendicular to the horizontal plane of the base portion or are inclined at an acute angle and closed to form a closed angle is preferably about 60 ° to 90 °. It is preferable that the upright protrusion has a flat grounded portion as represented by a triangular truncated cone, a quadrangular truncated cone, and a truncated cone, but a load is applied vertically when walking on a hard road surface. The shape is not limited to these as long as the rigidity can be secured.

The height of the inclined protrusion and the upright protrusion is 3.0 mm to 7.0 mm from the ground surface of the base.
However, about 4.0 mm is preferable.

Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a resin spike 1 according to the present invention as viewed from the ground plane side. FIG. 2 shows 2-2 of FIG.
FIG. 3 is a sectional view taken along the line of FIG. 3, and FIG. 3 is a sectional view taken along the line 3-3 of FIG. The resin spike 1 has four upright projections 3 and four slanted projections 4 on the periphery as a non-slip projection on the ground-contacting surface side of a disk-shaped base 2 that is mounted in contact with the sole of the shoe. Projected alternately along the section. The base portion 2, the upright protrusion portion 3 and the inclined protrusion portion 4 are integrally formed of the same resin material, and a polyurethane resin having a JIS A hardness of 90 is used. In the base part 2,
The mounting screw shaft 5 made of metal for mounting on the shoe sole is integrally molded by insert molding the flange portion 6 continuously provided at the end thereof to the base portion 2, and the back surface of the base portion 2 (to the sole It projects to the center of the contact surface), and the mounting screw shaft 5 is screwed into a nut portion of the shoe sole (not shown) so that the resin spike 1 can be attached to the shoe sole. In the present embodiment, the metallic mounting screw shaft 5 is coupled to the base portion 2. However, when the base portion 2 is molded of high hardness resin, the mounting screw shaft 5 is the same as the base portion 2. It is possible to integrally mold the resin material. Further, two wrench holes 7 are provided on the grounding surface side of the base portion 2 for engaging a tightening wrench for mounting on the shoe sole.

The upright projection 3 is formed in a substantially truncated pyramid shape, and the opposite radial side surfaces 10, 11 are inclined at an elevation angle of about 80 ° with respect to the horizontal surface 2a on the grounding surface side of the base portion 2. It has a closed shape. Opposing circumferential sides 1
2 and 13 have an elevation angle of about 80 with respect to the horizontal plane 2a of the base portion 2.
They have a shape inclining to each other and are closed to each other, and as a whole are upright in the vertical direction with respect to the horizontal plane 2a of the base portion 2 and are tapered. The upright protrusions 3 having such a shape have high rigidity in the vertical direction when walking or during a golf swing and are hard to be deformed, so that the upright protruding portions 3 have durability such as shape retention and abrasion resistance. Are better.

The inclined projections 4 are formed on the side surfaces 2 facing each other in the radial direction.
Of 0 and 21, the elevation angle of the generatrix of the side surface 20 is 60 °, and the elevation angle of the generatrix of the side surface 21 is inclined at 110 ° and has a shape that opens outward. The inner side surface 20 is formed into a narrow curved surface, and the outer side surface 21 is formed into a wide flat surface. Further, the side surfaces 22 and 23 facing each other in the circumferential direction have a shape in which they are inclined with respect to the horizontal plane 2a of the base portion 2 at an elevation angle of about 60 ° to 80 ° and are closed to each other. It gradually widens from the inside to the outside and tapers. The inclined protrusion 4 having such a shape generates a reaction force as a reaction force on the outer side surface 21 to which the shear stress is applied during the golf swing, and exerts a large grip force, and has a grip force higher than that of the upright protrusion 3. Remarkably excellent.

In the present embodiment, the disk-shaped base portion 2 has a diameter of 25.0 mm, the upright protruding portions 3 and the inclined protruding portions 4 have the same height, and the base portion 2 has horizontal surfaces 2a to 4.
It is formed to a height of 00 mm.

FIG. 4 shows another embodiment in which the arrangement of the inclined projections 4 in the resin spike 1 shown in FIG. 1 is changed, and the same components as those in FIG. The description is omitted. In this example,
The inclined projection 4 has a side surface 21 in the circumferential direction or the base portion 2.
It has a shape that is opposed to the tangent line T direction of the outer circumference and is inclined to the horizontal surface 2a on the grounding surface side of the base portion 2 by about 110 ° and opened to the circumferential side, as shown in FIGS. 4 and 5. To
The tip portion is inclined in the circumferential direction. The inclined protrusion 4 having such an arrangement configuration resists a force that tends to rotate around the central axis (mounting screw shaft 5) of the base portion 2 when a load in the shearing direction is applied during a golf swing. Grip force is generated, and the grip force with respect to the twisting force acting on the shoe sole during the golf swing can be improved. Further, as in the present embodiment, when the tip end portion of each inclined projection portion 4 is inclined counterclockwise, the direction in which the mounting screw shaft 5 of the spike 1'is tightened against the shoe sole during the golf swing. It is possible to effectively prevent the spike 1'from loosening and coming off the shoe sole due to the force.

[0021]

As described above, the resin spike according to the present invention has an excellent gripping property as a slip stopper, but is easily deformed by a vertical load, and the inclined projection. The upright protrusions, which are inferior in gripping property to the parts but are less likely to be deformed by a vertical load ,
Since they are alternately arranged along the peripheral edge,
Deformation of the origin is prevented in good balance by the upright protrusions.
Therefore , a good grip can be exhibited. Therefore, it is possible to provide a resin spike having excellent durability such as shape retention and abrasion resistance of the both protrusions while maintaining a high gripping force.

According to the second aspect of the present invention, since the inclined projection portion has a shape that is inclined to the outside in the radial direction at an obtuse angle and opened to the side, the inclined projection having excellent gripping force. The parts function radially, and a good gripping force can be exhibited in all the horizontal directions of the base part.

According to the third aspect of the present invention, since the inclined projection portion is inclined at an obtuse angle in the circumferential direction or in the tangential direction of the outer periphery of the base portion and extends laterally, the central axis of the base portion is formed. It is possible to increase the grip force that resists the force of rotating around. Therefore, the grip property against the twisting force applied to the shoe sole during the golf swing is excellent.

[Brief description of drawings]

FIG. 1 is a plan view of a resin spike according to the present invention viewed from a grounding surface side.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a sectional view taken along line 3-3 of FIG.

FIG. 4 is a plan view showing another embodiment of the resin spike according to the present invention viewed from the ground contact side.

5 is a sectional view taken along line 5-5 of FIG.

FIG. 6 is an explanatory view of an upright protrusion portion of a resin spike.

FIG. 7 is an explanatory diagram of an inclined protrusion portion of a resin spike.

8A and 8B are explanatory views showing the deformation of the inclined projection portion of the resin spike, wherein FIG. 8A shows the state before the deformation and FIG. 8B shows the deformed state.

[Explanation of symbols]

1,1 'resin spike 2 base 2a Horizontal surface of base 2 3 Upright protrusion 4 Inclined protrusion 5 Screw shaft for mounting 10, 11 Sides of upright protrusions facing each other 20, 21 Sides of the inclined projections facing each other

Front page continued (56) References International Publication 98/036653 (WO, A1) (58) Fields investigated (Int.Cl. ⁷ , DB name) A43B 1/00-23/30 A43C 1/00-17 / 06 A43D 1/00-119/00

Claims (3)

(57) [Claims] 1. A resin spike in which a plurality of anti-slip projections are provided on the ground contact surface side of a base portion that abuts on a shoe sole, wherein the anti-slip projections include at least one bus bar of opposite side surfaces. an inclined protrusion having a shape opened laterally by angle of elevation is inclined at an obtuse angle relative to the horizontal plane of the base portion, the upstanding protrusions elevation of all generatrices of the side surface has a closed shape inclined at an acute angle Cross along the peripheral edge of the base.
Resin spikes characterized by being placed on top of each other . Wherein said inclined protrusions claims, characterized in that a shape opened inclined at an obtuse angle radially outward to the side
Item 1. The resin spike according to item 1 . 3. The resin spike according to claim 1 , wherein the inclined protrusion has a shape that is inclined at an obtuse angle in the circumferential direction or in a tangential direction of the outer circumference of the base and is opened to the lateral side.