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Golf club head

Inactive Publication Date: 2020-12-31
BRIDGESTONE SPORTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent aims to enhance the feel of a golf club head by improving the back cavity.

Problems solved by technology

However, the golf club head of this type includes a face portion formed to be relatively thin, so that in some cases, the vibration on the toe side of the face portion becomes larger at the time of striking a ball.
This vibration may deteriorate a shot feeling.

Method used

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Experimental program
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Effect test

first embodiment

[0018]With reference to FIGS. 1A to 3A, a golf club head 1 according to an embodiment of the present invention will be described. FIG. 1A is a front view of the golf club head 1, and FIG. 1B is a back view thereof. FIG. 2A is a sectional view taken along a line A-A in FIG. 1B, FIG. 2B is a perspective view of the golf club head 1 viewed from a toe side, and FIG. 3A is a sectional view taken along a line B-B in FIG. 1B. In the drawings, an arrow D1 indicates a toe-heel direction, and an arrow D2 indicates a height direction of the face portion. The height direction is a vertical direction parallel to the surface of a face portion 4 in a state in which the golf club head 1 is in contact with the ground in accordance with a predetermined lie angle and a predetermined loft angle.

[0019]The golf club head 1 is a cavity back iron type golf club head. The present invention is applicable to any of a long iron, a middle iron, a short iron, and a wedge.

[0020]The golf club head 1 includes a top...

second embodiment

[0029]An arrangement example in which the width W is constant in the extending direction of the reinforcing portion 7 has been described in the first embodiment, but the width W may not be constant. FIG. 4 shows an example of this case. In the illustrated example, a width W1 of an end portion 7a is larger than a width W2 of an end portion 7b, and the width gradually decreases from the end portion 7a toward the end portion 7b (from an upper edge portion 6a toward the toe-side portion of a top line 2). Thus, the rigidity of the toe-side portion of the top line 2 can be improved while lowering the center of gravity of the head.

third embodiment

[0030]In the first embodiment, the structure in which the reinforcing portion 7 is integrally formed with the remaining portion of the golf club head 1 has been assumed. However, the reinforcing portion 7 may be formed by a member different from the remaining portion of the golf club head 1. FIG. 5A shows an example of this case. In the illustrated example, a reinforcing portion 7 is formed by a reinforcing member 7A. In the reinforcing member 7A, an end portion 7a is fixed to a back portion 6 by a screw 9, and an end portion 7b is fixed to a top line 2 by another screw 9. A through hole into which the screw 9 is inserted is formed in each of the end portions 7a and 7b, and a screw hole with which the screw 9 is screwed is formed in each of the back portion 6 and the top line 2. In this embodiment, the reinforcing member 7A is fixed by the screws 9, but another mechanical fixing structure such as caulking or press-fitting may be used.

[0031]By forming the reinforcing portion 7 by the...

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Abstract

A cavity back iron type golf club head includes a face portion, a back portion, and at least one reinforcing portion that extends from an upper edge portion of the back portion toward a toe-side portion of a top line.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S)[0001]This application claims priority to and the benefit of Japanese Patent Application No. 2019-117043 filed on Jun. 25, 2019, the entire disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTIONField of the Invention[0002]The present invention relates to a cavity back iron type golf club head.Description of the Related Art[0003]As a method for improving the performance of the face portion of a golf club head, Japanese Patent Laid-Open No. 2012-071111 discloses a golf club head in which a portion larger in mass than the surroundings is provided at a part that becomes the antinode of the vibration of the face portion. Japanese Patent No. 6095348 discloses a golf club head in which a plurality of grooves are formed in a part of the back surface of the face portion. Japanese Patent Laid-Open No. 10-248970 discloses a golf club head in which the flexural rigidity in the vibration part on the toe side is increased. Japa...

Claims

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Application Information

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IPC IPC(8): A63B53/04
CPCA63B53/047A63B53/0454A63B60/54A63B2053/0479A63B53/0408A63B60/52A63B2209/00A63B53/06A63B2053/0491A63B60/02
Inventor BAN, WATARU
Owner BRIDGESTONE SPORTS
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