JP2012040354A - Golf tee - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a golf tee for sufficiently suppressing backspin of a ball, and for giving a spin having appropriate rotational speed to a ball.SOLUTION: The golf tee 12 includes: a ball placement portion 2 formed from a silicone resin; and a support portion 3 for supporting the ball placement portion 2 for fixing to the ground surface. On a placement surface 21b onto which the ball is placed of the ball placement portion 2, an annular projection 21a is provided, where the annular projection projects from the placement surface 21b and has a cross-sectional shape having a sharp tip. When the ball is placed on the golf tee 12, a surface of the ball abuts on the tip of the annular projection 21a. When hitting force acts on the ball, a portion at a ball-movement side of the annular projection 21a is deformed from an inner-diameter side toward an outer-diameter side as the ball moves, and reaction force operates on the ball. The reaction force allows the ball to fly while backspin of the ball has been reduced sufficiently.

Description

  The present invention relates to a golf tee that supports a golf ball spaced from the ground.

  Usually, the hitting surface of a golf club is provided with a loft angle inclined toward the grip side with respect to the extending direction of the shaft of the golf club. Therefore, when a ball is hit with a golf club by a normal hitting method, a so-called backspin that rotates in the antigravity direction as viewed from the moving direction of the ball is applied around a horizontal axis substantially orthogonal to the moving direction of the ball. When the backspin rotation speed is appropriate, it is possible to increase the flight distance by generating an appropriate lift force on the flying ball, but in many cases the backspin rotation speed tends to be excessive, This causes inconveniences such as the occurrence of appropriate lift, shortening the flight distance, and a significant return of the ball to the hitting point after landing.

  In order to solve such a problem, golf tees for suppressing backspin have been proposed (for example, see Patent Document 1). FIG. 9 is a cross-sectional view showing the golf tee of Patent Document 1. As shown in FIG. The golf tee 110 includes a piercing shaft portion 114 that is stabbed into the ground and a ball placement portion 112 on which a ball is placed. The ball mounting portion 112 includes an attachment portion 116 attached to the piercing shaft portion 114 and a dish-like portion 118 having a concave spherical surface that is shaped along the convex spherical surface of the ball. The ball mounting portion 112 is formed of a soft synthetic resin, and the diameter D of the dish-shaped portion 118 is 25 mm to 40 mm. Accordingly, as shown in FIG. 10, when the ball 10 receives a striking force from the club head 11 in the direction indicated by the arrow S, the ball 10 gets over the portion P of the dish-like portion 118 on the side opposite to the hitting ball. At this time, the portion P of the dish-shaped portion 118 is deformed, so that a resistance force is generated against the movement of the golf ball 10, and the rotational force A in the direction to cancel back spin in the rotational direction indicated by the arrow B is applied to the ball. To avoid backspin.

Japanese Patent Laid-Open No. 8-112381

  However, since the ball 10 placed on the conventional golf tee 110 receives a striking force having a vertically upward component, the deformation amount when the ball 10 gets over the portion P of the dish-shaped portion 118 is relatively small. . Therefore, depending on the deformation of the portion P of the dish-shaped portion 118, it is difficult to obtain a resistance force that can cancel back spin of the ball 10, and there is a problem that the effect of suppressing back spin is insufficient.

  Accordingly, an object of the present invention is to provide a golf tee that can sufficiently suppress the backspin of the ball and can give the ball a spin with an appropriate rotational speed.

In order to solve the above problems, a golf tee of the present invention includes a ball placement portion on which a ball is placed, and a support portion that supports the ball placement portion and is fixed to the ground.
The mounting surface on which the ball of the ball mounting unit is mounted is provided with a convex spin relaxation means protruding from the mounting surface,
The spin relaxation means is an annular protrusion having a sharp tip in a cross section.

  According to the above configuration, when the ball is applied with a striking force and moved in the traveling direction, a reaction force in a direction to soften back spin is applied from the spin relaxation means to the ball. Here, since the spin relaxation means has a convex shape protruding from the mounting surface of the ball mounting portion, even if a striking force having a vertically upward component acts on the ball, the reaction force is effectively applied to the ball. Can be given. Therefore, it is possible to effectively suppress the backspin of the ball and to give the ball with an appropriate number of rotations. In addition, the spin relaxation means formed by the annular protrusion having a sharp tip in the cross section has a relatively large amount of deformation accompanying the movement of the ball, so that the reaction force in the direction to soften the back spin can be effectively applied to the ball. it can.

  Here, the backspin is rotation about an axis orthogonal to the traveling direction of the ball, and refers to rotation that is vertically upward when viewed from the traveling direction side of the ball.

A golf tee according to another aspect of the present invention includes a ball placement portion on which a ball is placed, and a support portion that supports the ball placement portion and is fixed to the ground.
The mounting surface on which the ball of the ball mounting unit is mounted is provided with a convex spin relaxation means protruding from the mounting surface,
The spin relaxation means is an annular protrusion having a rounded shape in cross section.

  According to the above configuration, when the ball is applied with a striking force and moved in the traveling direction, a reaction force in a direction to soften back spin is applied from the spin relaxation means to the ball. Here, since the spin relaxation means has a convex shape protruding from the mounting surface of the ball mounting portion, even if a striking force having a vertically upward component acts on the ball, the reaction force is effectively applied to the ball. Can be given. Therefore, it is possible to effectively suppress the backspin of the ball and to give the ball with an appropriate number of rotations. In addition, the spin relaxation means formed of an annular projection having a rounded shape in cross section closely adheres to the surface of the concave portion of the ball as the ball moves, so that the reaction force in the direction to soften the back spin on the ball is effective. Can be activated.

  Here, the backspin is rotation about an axis orthogonal to the traveling direction of the ball, and refers to rotation that is vertically upward when viewed from the traveling direction side of the ball.

  In the golf tee of one embodiment, at least the spin relaxation means is formed of a soft material in the ball mounting portion.

  According to the above embodiment, the spin relaxation means formed of a soft material is deformed and closely adheres to the ball as the ball moves in the traveling direction, so that the reaction force in the direction to soften the back spin on the ball is effective. Can act on.

Here, the soft material refers to a material that is softer than the material that forms the surface portion of the ball. Preferably, in order to prevent the disadvantage that the hitting surface of the club head is damaged, JIS
K 6253 is a material having a hardness of 70 or less according to a type A durometer hardness test (hereinafter simply referred to as “hardness”). As such a soft material, an elastomer formed of natural rubber or a synthetic resin can be used, and a silicone resin is preferably used in terms of flexibility and adhesion. When a synthetic resin other than a silicone resin is used, a synthetic rubber such as polychloroprene, acrylonitrile, or butadiene-styrene, or a soft resin such as polystyrene or polypropylene can be used.

  Further, the soft material may be used only for the spin relaxation means, may be used for a part of the ball mounting portion including the spin relaxation means, or may be used for the entire ball mounting portion. .

  The golf tee of one embodiment has a ventilation path extending substantially parallel to the radial direction of the mounting surface of the ball mounting portion between the ball mounting portion and the support portion.

  According to the above embodiment, the wind caused by the movement of the club head when hitting the ball is passed through the ventilation path provided between the ball mounting portion and the support portion and extending substantially parallel to the radial direction of the mounting surface. I can escape. Thereby, the force in the moving direction of the ball acting on the golf tee due to the wind pressure can be reduced. As a result, a reaction force in a direction that softens backspin can be effectively applied from the spin relaxation means to the ball.

It is sectional drawing which shows the golf tee of the reference example of this invention. It is the model top view which expanded and showed the mounting surface of the golf tee of a reference example. It is sectional drawing which shows the use condition of the golf tee of a reference example. It is sectional drawing which shows the golf tee of 1st Embodiment. It is a top view which shows the golf tee of 1st Embodiment. It is sectional drawing which shows the golf tee of 2nd Embodiment. It is a side view which shows the golf tee of 3rd Embodiment. It is C-C 'arrow sectional drawing in FIG. It is sectional drawing which shows the conventional golf tee. It is sectional drawing which shows the use condition of the conventional golf tee.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing a golf tee according to a reference example of the present invention, and FIG. 2 is a schematic plan view of the golf tee according to the reference example. The golf tee 1 of the reference example is configured by a ball placement portion 2 on which a ball is placed, and a support portion 3 that supports the ball placement portion 2 and is fixed to the ground.

  The ball mounting portion 2 has a substantially conical side surface, and has a concave spherical mounting surface 2b along the convex spherical surface of the ball in a region corresponding to the generally conical bottom surface. The mounting surface 2b is provided with a plurality of convex portions 2a as spin relaxation means protruding in the normal direction from the mounting surface 2b. The convex portion 2a is a partial sphere having an arcuate cross section, and is set to a size that can be fitted into a concave portion forming a dimple of the ball. In addition, in the schematic plan view of FIG. 2, in order to easily understand the arrangement position of the convex portion 2a, a state in which the placement surface 2b is developed on a plane is shown.

  The ball mounting part 2 including the convex part 2a as the spin relaxation means is formed of a silicone resin as a soft material.

  Here, the ball mounting portion 2 may be formed of an elastomer such as natural rubber or synthetic resin as a soft material in addition to the silicone resin. When a synthetic resin is used, a synthetic rubber such as polychloroprene, acrylonitrile, or butadiene-styrene, or a soft resin such as polystyrene or polypropylene can be used. The soft material may be softer than the surface portion of the ball, but preferably has a hardness of 70 or less. By using a material having a hardness of 70 or less, the disadvantage that the hitting surface of the club is damaged can be prevented. Moreover, in this embodiment, although the whole ball mounting part 2 is formed with silicone resin, you may form only the convex part 2a with silicone resin. In this case, it is preferable to form the portion closer to the support portion 3 than the mounting surface 2b with a resin having a hardness higher than that of the silicone resin in order to improve shape retention.

  As for the said ball mounting part 2, the diameter of the mounting surface 2b in planar view becomes like this. Preferably it is about 15-30 mm, and the diameter of the convex part 2a is about 2.8 mm. In addition, the dimension of the ball | bowl mounting part 2 and the dimension of the convex part 2a are not restricted to these, Other dimensions may be sufficient. The ball mounting portion 2 has a thickness of about 10 mm, and the overall axial dimension of the golf tee 1 including the ball mounting portion 2 and the support portion 3 is about 40 mm. Note that the overall axial dimension of the golf tee 1 can be set as appropriate within a range of 30 mm or more and 80 mm or less in accordance with the setting of the placement height of the ball from the ground surface by the golf tee 1.

  Moreover, the diameter of the mounting surface 2b can be set to various values according to the number of the protrusions 2a. Moreover, the diameter of the convex part 2a can be suitably set according to the size of the dimple of the ball placed on the ball placing part 2. When the dimple of the ball is constituted by a plurality of concave groups having different dimensions, it is preferable to set the diameter of the convex portion 2a to the largest number of concave dimensions. In addition, the axial dimension of the golf tee 1 can be set as appropriate in accordance with the dimension of the ball mounting portion 2.

  The support portion 3 is a resin rod-shaped body that gradually decreases in diameter from the base end toward the tip, and the tip is formed in a sharp shape that can easily penetrate into the ground. The base end portion of the support portion 3 is fixed to a portion corresponding to the apex of the ball mounting portion 2 having a generally conical shape.

  The golf tee 1 of the reference example suppresses the backspin of the ball as follows. First, in a state where the convex spherical surface 10b of the ball 10 is in contact with the placement surface 2b of the ball placement portion 2 of the golf tee 1, the tip of the support portion 3 is penetrated into the ground to bring the support portion 3 into the ground. Fix it. Thereby, the golf tee 1 supports the ball 10 in a state where the convex portion 2 a of the ball mounting portion 2 is fitted in the concave portion 10 a of the dimple of the ball 10.

  Subsequently, the golf club is swung, and as shown in FIG. 3, the club head 11 moves in the direction of arrow S, and a striking force acts on the ball 10 from the striking surface of the club head 11. Then, a reaction force in the direction indicated by the arrow F acts on the surface of the convex spherical surface 10b and the concave portion 10a of the ball 10 from the surface of the convex portion 2a and the mounting surface 2b of the ball mounting portion. Here, since the convex portion 2a of the ball mounting portion is fitted in the concave portion 10a of the ball 10, the hitting force acting on the ball 10 has a vertically upward component. A large reaction force is applied from the ball mounting portion 2 to the ball 10. Thereby, the ball 10 flies in the direction indicated by the arrow L in a state where the backspin in the direction indicated by the arrow B is sufficiently reduced. As a result, it is possible to impart a backspin with an appropriate rotation number to the ball 10 and effectively prevent conventional inconveniences such as shortening the flight distance and returning the ball after landing.

  When a ball is placed on a conventional general golf tee and a hitting force is applied to the ball with a golf club, a spin of more than 3500 revolutions per minute is applied depending on the loft angle provided in the golf club. There were many things. On the other hand, according to the golf tee 1 of the reference example, the back spin of the ball can be effectively suppressed by the convex portion 2a as the spin relaxation means provided on the placement surface of the ball placement portion, The ball can be backspun at an appropriate speed of 2000-2500 revolutions per minute.

  FIG. 4 is a cross-sectional view showing the golf tee 12 according to the first embodiment of the present invention, and FIG. 5 is a plan view of the golf tee 12 according to the first embodiment. The golf tee 12 of the present embodiment is different from the reference example in the shape of the spin relaxation means provided in the ball mounting portion 2. In the first embodiment, the same reference numerals are used for the same parts as in the reference example, and detailed description thereof is omitted.

  The ball mounting part 2 of the first embodiment is formed of a silicone resin as a soft material. The mounting surface 21b of the ball mounting part 2 is provided with an annular protrusion 21a that protrudes from the mounting surface 21b and has a sharp cross-sectional shape as a spin relaxation means. As shown in FIG. 4, the annular protrusion 21 a has a triangular cross section whose inner diameter side is shorter than outer diameter side. Three annular protrusions 21a are provided on the outer peripheral side concentric with the mounting surface 21b whose outer edge is circular. Note that the number of the annular protrusions 21a may be any number.

  When the ball is placed on the golf tee 12 of the first embodiment, the surface of the ball comes into contact with the tip of the annular protrusion 21a. When a striking force is applied to this ball, as the ball moves, the portion of the annular protrusion 21a on the moving side of the ball is deformed from the inner diameter side toward the outer diameter side. Here, since the annular protrusion 21a has a triangular cross section whose inner diameter side is shorter than the outer diameter side, the annular protrusion 21a is relatively large against the ball moving from the inner diameter side toward the outer diameter side. Apply force. Due to this reaction force, the ball flies in a state where the backspin of the ball is sufficiently reduced, and as a result, it is possible to impart a backspin of an appropriate number of revolutions to the ball.

  FIG. 6 is a cross-sectional view showing the golf tee 13 of the second embodiment. The golf tee 13 of this embodiment is different from the first embodiment in the cross-sectional shape of the spin relaxation means provided in the ball mounting portion 2. In the second embodiment, the same reference numerals are used for the same parts as in the first embodiment, and detailed description thereof is omitted.

  In the second embodiment, the annular protrusion 22a as the spin relaxation means provided on the mounting surface 22b of the ball mounting portion 2 has an arcuate cross section as shown in FIG. When a ball is placed on the golf tee 13 of this embodiment and a striking force is applied to the ball, the ball moves from the inner diameter side to the outer diameter side of the placement surface 22b, and the annular protrusion 22a on the moving side of the ball is moved. The part is deformed. Here, since the annular protrusion 22a has an arcuate cross section and is formed of a soft material, the annular protrusion 22a is deformed so as to be in close contact with the convex spherical surface 10b and the surface of the concave part 10a. Thereby, the annular protrusion 22a applies a relatively large reaction force to the ball, and the reaction force can sufficiently reduce the backspin of the ball.

  In the second embodiment, three annular protrusions 22a are provided on the mounting surface 22b, but any number of annular protrusions 22a may be installed.

  FIG. 7 is a side view showing the golf tee 14 of the third embodiment, and FIG. 8 is a cross-sectional view taken along the line C-C ′ of FIG. 7. The golf tee 14 of the present embodiment is different from the reference example in that a ventilation path 5 is provided between the ball mounting portion 2 and the support portion 3. In the third embodiment, the same reference numerals are used for the same parts as in the reference example, and detailed description thereof is omitted.

  In the golf tee 14 of the third embodiment, the ball mounting portion 2 is formed of a silicone resin as a soft material. This ball mounting portion 2 is formed in a substantially truncated cone shape, and a convex portion 2 a and a mounting surface 2 b similar to those of the reference example are provided in a region corresponding to the bottom surface of the large diameter of the ball mounting portion 2. ing. On the other hand, the tips of a plurality of columnar members 51 formed integrally with the resin support portion 3 are fixed to the bottom surface of the ball mounting portion 2 having a small diameter. The columnar member 51 extends from the edge of the base end surface of the support portion 3 toward the edge of the bottom surface of the ball mounting portion 2 with a small diameter so as to be away from the central axis of the tee 14. A space between the bottom surface of the ball mounting portion 2 having a small diameter and the base end surface of the support portion 3 is divided by a plurality of columnar members 51 to form the ventilation path 5.

  When the ball is placed on the golf tee 14 of the third embodiment and a striking force is applied to the ball, the club head 11 approaches the golf tee 14 as indicated by an arrow S as shown in the plan view of FIG. As a result, a wind toward the golf tee 14 is generated. Here, since the ventilation path 5 is provided between the ball mounting part 2 and the support part 3 of the golf tee 14, the wind passes through the ventilation path 5 as indicated by the arrow W, and the golf tee 14. The other side of the club head 11 is escaped. Thereby, the force in the moving direction of the ball acting on the golf tee 14 due to wind can be reduced. Accordingly, the reaction force accompanying the movement of the ball 10 effectively acts on the surface of the convex spherical surface 10b and the concave portion 10a of the ball 10 from the convex portion 2a and the mounting surface 2b of the ball mounting portion 2. As a result, the ball 10 flies in a state where the backspin is reduced, and a backspin having an appropriate number of revolutions is applied, so that the flight distance can be shortened and an excessive return after landing can be prevented.

  In 3rd Embodiment, although the space between the bottom face of the ball | bowl mounting part 2 and the base end surface of the support part 3 was divided | segmented by the some columnar member 51, the ventilation path 5 was comprised, However, A ventilation path is substantially conical shape. You may comprise by the through-hole formed in the vertex part of this ball mounting part, or the through-hole formed in the base end side part of a support part.

DESCRIPTION OF SYMBOLS 1 Golf tee 2 Ball mounting part 2a Convex part 2b Mounting surface 3 Support part

Claims (4)

A ball placement portion on which a ball is placed; and a support portion that supports the ball placement portion and is fixed to the ground.
The mounting surface on which the ball of the ball mounting unit is mounted is provided with a convex spin relaxation means protruding from the mounting surface,
The golf tee according to claim 1, wherein the spin relaxation means is an annular protrusion having a sharp tip in a cross section. A ball placement portion on which a ball is placed; and a support portion that supports the ball placement portion and is fixed to the ground.
The mounting surface on which the ball of the ball mounting unit is mounted is provided with a convex spin relaxation means protruding from the mounting surface,
The golf tee characterized in that the spin relaxation means is an annular protrusion having a rounded shape in cross section. In the golf tee according to claim 1 or 2,
The golf ball tee according to claim 1, wherein at least the spin relaxation means is formed of a soft material. The golf tee according to claim 1,
A golf tee comprising a ventilation path extending substantially parallel to a radial direction of a mounting surface of the ball mounting portion between the ball mounting portion and the support portion.

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