JP2021171082A - Golf club - Google Patents

Abstract

To provide a golf club capable of extending carry of a ball, allowing a user to feel satisfaction with the carry of the ball, and being used for ground golf or park golf.SOLUTION: A golf club 100 has a head 101 for hitting a ball B. The head 101 is configured so that a face 103 is provided on a head main body 102 to which a shaft 107 is coupled. The face 103 is formed by molding an elastomer material into a flat plate-shape, and the face is formed of an external face 104 and an internal face 105. The external face 104 is formed by forming a thermosetting polyurethane resin whose durometer hardness is 70A into a plate-shaped body having a thickness of 7 mm, and is exposed on the head main body 102. The internal face 105 is formed by forming a thermosetting polyurethane resin whose durometer hardness is 70A into a plate-shaped body having a thickness of 3 mm, and is provided between the head main body 102 and the external face 104.SELECTED DRAWING: Figure 3

Description

The present invention relates to a golf club used for ground golf or park golf.

Conventionally, various golf clubs used for ground golf or park golf have been proposed. For example, Patent Document 1 below discloses a golf club in which a ball striking surface for hitting a ball is composed of a hard striking surface that emphasizes flight distance and a soft striking surface that emphasizes ease of aiming at medium and short distances. There is.

Japanese Unexamined Patent Publication No. 2004-230119

However, in such a golf club described in Patent Document 1, there is a problem that the player is given the impression that the flight distance does not extend as expected even if the ball is hit with a hard hitting surface. As a result of research by the inventors of the present application on this problem, in players such as elderly people and beginners, the ball is often hit at a position other than the sweet spot of the head, and a strong impact when hitting the ball with a hard hitting surface It turned out that he tended to be unable to swing the golf club strongly for fear of.

The present invention has been made to address the above problems, and an object of the present invention is to provide a golf club used for ground golf or park golf, which extends the flight distance of a ball and makes it easy to be convinced of the flight distance. ..

In order to achieve the above object, the feature of the present invention is a golf club used for ground golf or park golf in which a shaft extending in a rod shape is provided on a head for hitting a ball, and the head is a head body to which the shaft is attached. The face is provided with a face that is supported by the head body and constitutes a hitting surface for hitting a ball. It is made of wood.

According to the features of the present invention configured in this way, the golf club is composed of a plate-shaped elastomer material having a face having a hardness value within the range of 70A ± 10A by a durometer and a thickness of 8.5 mm or more. Therefore, according to the experiment by the inventors of the present application, it has been confirmed that the flight distance of the ball can be extended and that the player can easily obtain a sense of satisfaction with the flight distance. Conventionally, an elastomer material having a low durometer hardness is made softer than an elastomer material having a relatively high durometer hardness, and it has been said that it is difficult to obtain a repulsive force when hitting a ball and it is difficult to extend a flight distance. rice field. However, in actual play, the ball cannot be hit accurately at the sweet spot of the head, the golf club cannot be swung strongly for fear of a strong impact when hitting the ball, or the ball is hit at the sweet spot of the head with a strong swing. There are circumstances that make things more difficult. According to the golf club according to the present invention, since the face is made of soft material, the golf club can be swung with a strong swing, and the ball and the face are elastically deformed when the head hits the ball. Since the contact area and the contact time are increased respectively, the player can push the ball hitting the face further forward. As a result, the golf club according to the present invention can extend the flight distance of the ball and make it easier for the player to feel convinced of the flight distance. Further, since the golf club according to the present invention has a soft face, the hitting sound when hitting a golf ball can be suppressed to be small, so that the noise in playing in the early morning can be suppressed.

Further, another feature of the present invention is that in the golf club, the face has a hardness value within the range of 70A ± 5A in durometer hardness.

According to another feature of the present invention configured in this way, the durometer hardness of the face of the golf club is set to a hardness value within the range of 70A ± 5A, and therefore, according to the experiments by the inventors of the present application. , More preferably, it is possible to easily obtain a feeling of satisfaction with the flight distance of the ball and the flight distance.

Further, another feature of the present invention is that in the golf club, the face has an outer face for hitting a ball and an inner face provided between the outer face and the head body.

According to another feature of the present invention thus configured, the golf club is composed of multiple layers having an outer face on which the face hits the ball and an inner face provided between the outer face and the head body. Therefore, the inner face can attenuate the impact received by the outer face when hitting the ball, and the transmission to the player can be suppressed, and a thick face can be formed with high accuracy.

Further, another feature of the present invention is that in the golf club, the outer face is formed to be thicker than the inner face.

According to another feature of the present invention configured in this way, the outer face of the golf club is formed to be thicker than the inner face, so that the joint surface between the outer face and the inner face when hitting the ball. It is possible to suppress the deformation of the face and suppress the damage of the face, and also improve the rigidity of the outer face itself to improve the durability.

Further, another feature of the present invention is that in the golf club, the outer face is formed with a thickness of at least twice the thickness of the inner face.

According to another feature of the present invention configured in this way, the outer face of the golf club is formed to be at least twice the thickness of the inner face, so that damage to the face can be further suppressed. At the same time, the durability of the outer face can be increased.

Further, another feature of the present invention is that in the golf club, the outer face and the inner face are configured to have the same durometer hardness value.

According to another feature of the present invention configured in this way, in a golf club, since the outer face and the inner face are configured to have the same durometer hardness value, the elasticity of the outer face when hitting a ball It is possible to suppress the occurrence of different deformations due to the deformation and the elastic deformation of the inner face, and it is possible to suppress damage to the face and improve durability.

Further, another feature of the present invention is that in the golf club, the face is colored in a plurality of colors in which the outer peripheral end faces are different in color from each other.

According to another feature of the present invention configured in this way, in the golf club, since the colors of the outer peripheral end faces of the face are colored in a plurality of colors different from each other, the elastic deformation due to pressing the face is visually observed. It is easy to grasp and the degree of deterioration of the face can be easily confirmed.

It is a front view which shows the outline of the whole structure of the golf club which concerns on one Embodiment of this invention. It is a side view which shows the outline of the appearance structure of the head which constitutes the golf club shown in FIG. It is sectional drawing which shows the state at the moment of hitting a ball by the head shown in FIG.

Hereinafter, an embodiment of the golf club according to the present invention will be described with reference to the drawings. FIG. 1 is a front view showing an outline of the overall configuration of the golf club 100 according to the present invention. Further, FIG. 2 is a side view showing an outline of the external configuration of the head 101 constituting the golf club 100 shown in FIG. Further, FIG. 3 is a cross-sectional view showing a state at the moment when the ball B is hit by the head 101 shown in FIG. The golf club 100 is a rod-shaped tool for hitting a golf ball B (hereinafter, may be simply referred to as "ball B") in ground golf or park golf.

(Structure of golf club 100)
The golf club 100 is mainly configured to include a head 101 and a shaft 107, respectively. The head 101 is a portion for hitting a resin ball B used in ground golf or park golf in a golf club 100, and is mainly provided with a head body 102 and a face 103, respectively.

The head body 102 is a component that secures the rigidity of the entire head 101, and is configured by forming a rigid body (for example, wood) in a block shape. In this case, the head body 102 is formed in a substantially rectangular parallelepiped shape (strictly speaking, a polyhedron shape) extending in the horizontal direction with respect to the height direction (also referred to as the "vertical direction"). The head body 102 is provided with a face 103 and a sole 106 on a part of the outer surface thereof.

The face 103 is a component that collides with the ball B to hit the ball B, and is formed by forming an elastomer material in a flat plate shape. Here, the elastomer material constituting the face 103 is a rubber material or a resin material having elasticity that elastically deforms when the ball B is hit, and more specifically, a heat-curable elastomer material (for example, sulfide). There are rubber, urethane rubber, silicone rubber, fluororubber, etc.) and thermoplastic elastomer materials (for example, styrene-based, olefin-based, vinyl chloride-based, urethane-based or amide-based resins, etc.).

In this case, the elastomer material constituting the face 103 has a durometer hardness (temperature 23 ° C. ± 2 ° C., humidity 50% ± 5%) having a hardness value within the range of 70A ± 10A and a thickness of 8.5 mm or more. It is formed in a plate shape. In the present embodiment, the face 103 is formed in a plate shape having a durometer hardness of 70 A and a thickness of 10 mm. The face 103 includes an outer face 104 and an inner face 105.

Here, the durometer hardness means that the pressure portion (pin-shaped member) of the durometer (rubber / plastic hardness meter) is vertically pressed from directly above onto the flat surface of the sample placed on a flat surface at a constant speed for a predetermined time (material). The meter value after (determined for each) is measured as the hardness value. Further, "A" in the hardness value 70A indicates a hardness value when a pressure portion formed of a flat surface having a diameter of 18 mm is pressed with a pressure load of 1 kgf.

It should be noted that the hardness value of the durometer hardness is often not exactly the same even if the same material is measured multiple times at the same location, so that the same measured value is often not obtained at a plurality of locations (for example, 5 locations). ) Is the median or average value of the measured values as the hardness value of the material.

The outer face 104 is a component that is exposed on the head body 102 and constitutes a portion for hitting the ball B, and is formed by forming an elastomer material in a flat plate shape. In the present embodiment, the outer face 104 is made of a thermosetting polyurethane resin having a durometer hardness (temperature 23 ° C. ± 2 ° C., humidity 50% ± 5%) and a hardness value of 70 A into a plate-like body having a thickness of 7 mm. It is formed and constructed. Further, the outer face 104 is composed of a dark color such as black or dark blue. The outer face 104 is molded by various processing methods such as injection molding or cutting using an injection molding machine (not shown), and then is adhesively fixed to the inner face 105 with an adhesive (not shown).

The inner face 105 is a component that is arranged between the head main body 102 and the outer face 104 and receives an impact from the outer face 104, and is configured by forming an elastomer material in a flat plate shape. In the present embodiment, the inner face 105 is made of a thermosetting polyurethane resin having a durometer hardness (temperature 23 ° C. ± 2 ° C., humidity 50% ± 5%) of 70 A and formed into a plate-like body having a thickness of 3 mm. It is formed and constructed.

That is, the inner face 105 is made of the same material as the outer face 104 including the hardness value, and has a thickness of less than half the thickness of the outer face 104. Further, the inner face 105 is composed of a color different from the color of the outer face 104 such as yellow or red. The inner face 105 is molded by various processing methods such as injection molding or cutting using an injection molding machine (not shown), and then is adhesively fixed to the head body 102 with an adhesive (not shown).

That is, one surface of the face 103 is attached to the head body 102 via an adhesive or the like in a vertically standing posture, and the other surface is exposed together with the outer surface of the head body 102. The exposed surface of the face 103 constitutes a flat striking surface 103a for striking the ball B. In the present embodiment, the striking surface 103a is formed in a substantially rectangular shape in a front view extending horizontally in the vertical direction.

The sole 106 is a component for protecting the lower surface of the head body 102, and is formed by forming an aluminum material into a curved shape along the bottom surface of the head body 102. In this case, the sole 106 is formed so as to cover the bottom surface of the face 103 as well as the bottom surface of the head body 102. The sole 106 is attached to the bottom surface of the head body 102 by a screw (not shown). The sole 106 may be formed so as to cover only the bottom surface of the head body 102 and not the bottom surface of the face 103. Further, the sole 106 may be omitted.

The shaft 107 is a component that swingably supports the head 101, and is formed by forming a wood or carbon material in a rod shape. The shaft 107 has a head body 102 attached to one end (lower side in the drawing) and a grip 108 attached to the other end (upper side in the drawing). In this case, the shaft 107 is attached to the head body 102 in a posture in which the face 103 stands upright and is inclined downward with respect to the vertical direction while extending upward. More specifically, the shaft 107 is attached to the head body 102 in an inclined posture in which the face 103 extends in the horizontal direction (to the right in FIG. 1) with respect to the vertical direction.

The grip 108 is a portion that is gripped by a user who plays golf, and is formed by forming a rubber material into a cylindrical shape. The grip 108 is inserted into the other end of the shaft 107.

(Operation of golf club 100)
Next, the operation of the golf club 100 configured in this way will be described. As shown in FIG. 3, a player playing ground golf (or park golf) hits the ball B with the face 103 by holding the grip 108 and swinging the head 101. In this case, since the face 103 is soft and thick, the face 103 is greatly elastically deformed by the colliding ball B, so that the contact area with the ball B becomes large and the ball B comes into contact with the face 103 before being separated. The contact time will be longer.

As a result, when swinging the golf club 100, the player can swing the golf club 100 strongly without fear of the impact of the ball B colliding with the face 103. Then, when the ball B collides with the face 103, the player can feel the state in which the ball B collides with the face 103 and is in close contact with the face 103 during the swing of the golf club 100, and the ball B is in close contact with the face 103. By operating the shaft 107 in the pressed state, the ball B can be pushed out more strongly.

As a result, the golf club 100 can extend the flight distance of the ball B and make it easier for the player to feel convinced of the flight distance. The player can also adjust the direction in which the ball B is pushed out by operating the shaft 107 while the ball B is pressed against the face 103. Further, the player can adjust so as to weaken the force for pushing out the ball B and suppress the flight distance by operating the shaft 107 while the ball B is pressed against the face 103.

Here, the experiments conducted by the inventors of the present application will be described. In this experiment, for four types of durometer hardness of 60A, 70A, 80A, and 90A, 12 types of faces with thicknesses of 6mm, 8.5mm, and 10mm were prepared and attached to the head body, respectively. This is a questionnaire survey of the feel of hitting a golf club when each of 20 players tried it.

According to the above experiment, a golf club having a face having a durometer hardness of 70 A and a thickness of 10 mm (that is, the golf club 100 in the present embodiment) has the highest conviction for the flight distance and the actual flight distance. Also confirmed a case that is longer than other golf clubs. In addition, according to this experiment, the evaluation of a golf club having a face having a durometer hardness of 60 A or 80 A and a thickness of 8.5 mm or 10 mm was a good impression as a second point.

As can be understood from the above operation description, according to the above embodiment, in the golf club 100, the face 103 is made of a plate-shaped elastic material having a hardness value of 70 A by a durometer and a thickness of 10 mm. Therefore, the player can swing the golf club 100 with a strong swing, and the contact area and contact time between the ball B and the face 103 increase due to the elastic deformation of the face 103 when the head 101 hits the ball B. As a result, the player can push the ball B hitting the face 103 further forward. As a result, the golf club 100 can extend the flight distance of the ball B and make it easier for the player to feel convinced of the flight distance. Further, since the face 103 of the golf club 100 is made of soft material, the hitting sound when hitting the ball B can be suppressed to be small, so that the noise in playing in the early morning can be suppressed.

Furthermore, the practice of the present invention is not limited to the above-described embodiment, and various modifications can be made as long as the object of the present invention is not deviated.

For example, in the above embodiment, the face 103 is composed of a hardness value having a durometer hardness of 70 A for each of the outer face 104 and the inner face 105. However, the face 103 may be configured with a durometer hardness of 70A ± 10A for each of the outer face 104 and the inner face 105, that is, a hardness value of 60A or more and 80A or less. In this case, according to the experiments by the inventors of the present application, the face 103 has a hardness value in the range of 70A ± 5A for the outer face 104 and the inner face 105, respectively, or a hardness value in the range of 60A or more and 70A or less. It is good to set to.

Further, in the above embodiment, the face 103 is configured with hardness values having the same durometer hardness for the outer face 104 and the inner face 105. As a result, the golf club 100 can prevent the elastic deformation of the outer face 104 and the elastic deformation of the inner face 105 from causing different deformations when the ball B is hit, and suppresses damage to the face 103 for durability. You can improve your sex. However, the face 103 can also be configured with hardness values having different durometer hardnesses for the outer face 104 and the inner face 105.

In this case, the face 103 can make the outer face 104 less likely to be elastically deformed by, for example, making the hardness value of the inner face 105 higher than the hardness value of the outer face 104, and when a thick face 103 is shot. Can improve stability in. Further, for the face 103, for example, by making the hardness value of the inner face 105 lower than the hardness value of the outer face 104, it is possible to suppress the impact of the face 103 at the time of a shot from being transmitted to the player.

Further, in the above embodiment, the face 103 is formed to have a thickness of 10 mm. However, the face 103 may be formed to have a thickness of 8.5 mm or more. In this case, the thickness of the face 103 is preferably 8.5 mm or more and 10 mm or less.

Further, in the above embodiment, the face 103 is composed of two separate face materials, an outer face 104 and an inner face 105. As a result, in the golf club 100, the impact received by the outer face 104 when hitting the ball B is attenuated by the inner face 105 to suppress transmission to the player, and the thick face 103 is accurately formed. be able to. However, the face 103 can also be formed by stacking one face material or three or more face materials.

Further, in the above embodiment, the face 103 is configured such that the thickness of the outer face 104 is at least twice the thickness of the inner face 105. As a result, the golf club 100 can suppress deformation of the joint surface between the outer face 104 and the inner face 105 when hitting the ball B to suppress damage to the face, and also improve the rigidity of the outer face 104 itself to make it durable. The sex can be improved. However, the face 103 may be configured such that the thickness of the outer face 104 is not more than twice the thickness of the inner face 105, that is, the thickness of the outer face 104 is simply thicker than the thickness of the inner face 105. ..

Further, the face 103 may be configured such that the thickness of the outer face 104 is equal to or less than the thickness of the inner face 105. That is, the face 103 can form the thicknesses of the outer face 104 and the inner face 105 to be different from each other. Further, in the face 103, the outer face 104 and the inner face 105 can be formed to have different thicknesses from each other.

Further, in the above embodiment, the face 103 is constructed by using a thermosetting polyurethane resin. However, the face 103 can be made of a resin material other than the thermosetting polyurethane resin. For example, the face 103 can also be constructed using a thermoplastic urethane resin.

Further, in the above embodiment, the face 103 is made of the same material as the outer face 104 and the inner face 105. However, the face 103 can also be made of different materials for the outer face 104 and the inner face 105.

Further, in the above embodiment, the face 103 is composed of the outer face 104 and the inner face 105 in different colors. As a result, the player can easily grasp the degree of deterioration of the face 103 by looking at the outer peripheral end surface of the face 103 for the state of elastic deformation of the face 103 by pressing the face 103. In this case, the face 103 may be configured with only the outer peripheral end faces having different colors by coloring only the outer peripheral end faces of the outer face 104 and the inner face 105. It goes without saying that the face 103 may be configured in the same color as the outer face 104 and the inner face 105.

B ... ball,
100 ... Golf club, 101 ... Head, 102 ... Head body, 103 ... Face, 103a ... Strike surface, 104 ... Outer face, 105 ... Inner face, 106 ... Sole, 107 ... Shaft, 108 ... Grip.

Claims (7)

A golf club used for ground golf or park golf in which a shaft extending in a rod shape is provided on a head for hitting a ball.
The head
The head body to which the shaft is attached and
It is provided with a face that is supported by the head body and constitutes a striking surface for striking the ball.
The face
A golf club characterized in that it is made of a plate-shaped elastomer material having a hardness value within the range of 70 A ± 10 A and a thickness of 8.5 mm or more. In the golf club described in claim 1,
The face
A golf club characterized in that the durometer hardness is a hardness value within the range of 70A ± 5A. In the golf club according to claim 1 or 2.
The face
The outer face that hits the ball and
A golf club having an inner face provided between the outer face and the head body. In the golf club described in claim 3,
The outer face
A golf club characterized in that it is formed to be thicker than the inner face. In the golf club according to claim 3 or 4.
The outer face
A golf club characterized in that it is formed with a thickness of at least twice the thickness of the inner face. In the golf club according to any one of claims 3 to 5.
The face
A golf club characterized in that the outer face and the inner face are configured to have the same durometer hardness value. In the golf club according to any one of claims 1 to 6.
The face
A golf club characterized in that the outer peripheral end faces are colored in a plurality of colors different from each other.

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