JP5156994B2 - Iron golf club head and iron golf club - Google Patents

Description

  The present invention relates to an iron golf club head and an iron golf club, and more particularly to an iron golf club head excellent in feel at impact and an iron golf club provided with the head.

  Conventionally, various proposals have been made in order to obtain a good shot feeling of an iron golf club, but the main attempt so far has been to produce sounds that are thought to degrade the shot feeling, such as noise in the hit ball sound. It is intended to obtain a good shot feeling by suppressing.

  For example, in Japanese Patent Laid-Open No. 2006-167317, a prepreg sheet is bonded to the back face portion of an iron head in order to provide an iron head with less noise and chatter noise and excellent shot feeling due to vibration absorption effect at impact An iron head is described.

Japanese Patent Application Laid-Open No. 2004-313777 discloses an elastic material having a hardness of 30 to 70 in which a hollow portion between a main body portion and a face portion is made of a polyurethane foam resin in order to suppress a high-pitched metal sound at the time of hitting. An iron golf club head filled with a body without any gaps is described.
JP 2006-167317 A JP 2004-313777 A

  Various factors such as the hitting sound, vibration transmitted to the hand, and visible trajectory can be considered as factors affecting the hitting feeling of an iron golf club. Among these factors, the “hitting sound” has a great influence on the hitting feeling. It is thought to give. This is supported by the fact that it has been reported that the hit feeling that can be discriminated when the ball is hit while the hitting sound is heard is difficult to discriminate when the hit ball is hit without being hit.

  The golf club head described in each of the above-mentioned documents tries to obtain a good shot feeling by suppressing a specific sound generated at the time of hitting the ball, but it is an attempt to suppress the hitting sound to the last, such an approach. It is difficult to improve the hitting sound by itself.

  The present invention has been made to solve the above-described problems, and an iron golf club head capable of improving the feel at impact by improving the hitting sound, and an iron golf club having the head The purpose is to provide.

Iron golf club head according to the present invention includes a face portion having a striking spherical, and a back portion positioned on the rear side of the face portion, the top edge portion positioned on the periphery of the face portion, toe portion, a sole portion and a heel portion and A tip corner region located in the vicinity of the connecting portion between the top edge portion and the toe portion; and provided on the back portion side, from the top edge portion toward the toe portion so as to define a part of the tip corner portion region And a reinforcing portion that has a wall end portion extending in an oblique direction and is reinforced with a thickness greater than that of the peripheral region reaching the toe portion from the top edge portion of the tip corner portion region.

  You may make the thickness of the said reinforcement part thicker than the thickness of the said front-end | tip corner part area | region. Further, the reinforcing portion may be provided at a position of a vibration node when the iron golf club head is vibrated by applying an impact to the sweet spot of the face portion.

  The iron golf club according to the present invention includes the golf club head as described above.

  According to the present invention, the portion extending obliquely from the top edge portion toward the toe portion so as to define a part of the tip corner portion region located in the vicinity of the connection portion between the top edge portion and the toe portion. Since the reinforcing portion or the projecting thick portion is provided, the tip corner portion region, which is considered to vibrate most easily when the ball is hit with the face portion, can be vibrated actively when the ball is hit. As a result, the hitting sound can be improved and the hitting feeling can be improved.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. The iron golf club in the embodiment of the present invention includes an iron golf club head, a shaft, and a grip, which will be described later. In addition, a well-known thing is employable as a shaft and a grip.

  FIG. 1 is a rear view of a head 1 of an iron golf club of the present embodiment, and FIG. 2 is a view of the head 1 of the present embodiment as viewed from the toe side.

  As shown in FIG. 1 and FIG. 2, a head 1 is a head of a cavity back type iron golf club, a hosel portion to which a shaft is connected, a face portion 2 located on the front side and having a ball striking surface, The back portion 3 is located on the back side (rear side) of the portion 2, and the top edge portion 4, the toe portion 5, the sole portion 7, and the heel portion 6 are located around the face portion 2.

  In the present specification, the top edge portion 4 is a portion constituting the upper end edge of the head 1 main body from the hosel portion to the toe portion 5, and the sole portion 7 is a portion constituting the bottom portion of the head 1 main body. The portion 5 is a portion connecting the top edge portion 4 and the sole portion 7 on the side away from the hosel portion, and the heel portion 6 is a portion extending from the lower end of the hosel portion to the sole portion 7.

  The main body of the head 1 can be produced by forging or casting using one or more materials such as stainless steel such as SUS630, soft iron, maraging steel, pure titanium, titanium alloy, and aluminum alloy.

  As shown in FIG. 1, the head 1 has a tip corner portion region 8 located in the vicinity of a connection portion between the top edge portion 4 and the toe portion 5. The tip corner portion region 8 is located at the upper end corner of the head 1 main body on the side away from the hosel portion and the sole portion 7. Since the tip corner portion region 8 is separated from both the hosel portion and the sole portion 7, it is considered that the tip corner portion region 8 is one of the portions that are most easily deformed and vibrated at the time of hitting the head 1. In the example of FIG. 1, the tip corner portion region 8 is located on the inner periphery of the head 1 body from the top edge portion 4 to the toe portion 5 and on the inner side of the head 1 body with respect to the peripheral region. Also includes a thin inner region. The tip corner portion region 8 has a substantially triangular shape when viewed from the rear side of the head 1, but the shape of the tip corner portion region 8 can be arbitrarily selected.

  A reinforcing portion 9 reinforced more than the tip corner portion region 8 is provided adjacent to a part of the tip corner portion region 8. More specifically, the reinforcing portion 9 is provided along the portion located on the central portion side of the back portion 3 in the tip corner portion region 8.

  As shown in FIG. 1, the reinforcing portion 9 is provided on the back portion 3 side and extends obliquely from the top edge portion 4 toward the toe portion 5 so as to define a part of the tip corner portion region 8. Has an existing part. In the example of FIG. 1, the upper end edge portion of the reinforcing portion 9 is located above the center portion in the height direction of the head 1 shown in FIG. 2. In other words, the above-described tip corner portion region 8 is located above the center portion in the height direction of the head 1 shown in FIG.

  In the example of FIG. 1, the reinforcing portion 9 has a bent shape as a whole. However, if the reinforcing portion 9 has a portion extending obliquely from the top edge portion 4 toward the toe portion 5, the reinforcing portion 9 is reinforced. Any shape can be selected as the shape of the portion 9.

  Further, the thickness (maximum thickness) of the reinforcing portion 9 is made thicker than the thickness (maximum thickness) of the tip corner portion region 8, and the reinforcing portion 9 is formed integrally with the head 1 body. More specifically, the reinforcing portion 9 is provided on the back portion 3 side so as to be a protruding thick portion that protrudes rearward from the surface of the back portion 3. As described above, in the present embodiment, the reinforcing portion 9 is formed integrally with the main body of the head 1, but the reinforcing portion 9 may be provided by attaching another member to the head 1.

  As shown in FIG. 3, when the ball is hit with the face portion 2 (for example, a sweet spot) of the head 1, the head 1 main body is as if the tip corner portion region 8 is deformed in the direction of falling forward. It is thought to vibrate. This is because the tip corner portion region 8 is separated from both the hosel portion and the sole portion 7, and it is considered that the degree of restraint from the main body of the head 1 is the smallest. Here, the thickness of the region excluding the side surface of the top edge portion 4 in the tip corner portion region 8 is reduced to, for example, about 2.5 mm to 6 mm, while the thickness is about 5 to 10 mm, for example, below the tip corner portion region 8. By providing the thick reinforcing portion 9, the tip corner portion region 8 is relatively easily deformed and vibrated when the ball is hit.

  In particular, when the reinforcing portion 9 is provided at the position of the vibration node of the head 1 body at the time of hitting the ball, the position of the vibration node can be reinforced, so the vibration of the tip corner portion region 8 when the ball is hit Can help. For this reason, the head 1 body can be vibrated in such a manner that the tip corner portion region 8 vibrates positively when the ball is hit. As a result, a hitting sound that is comfortable for the golfer can be obtained, and the hitting feeling can be improved.

  In order to confirm the above-mentioned effects, the inventors of the present application actually produced an iron golf club having the head 1 having the shape shown in FIG. 1 and conducted a test hit test with 10 female professional golfers. However, it was determined that the hit feeling of the iron golf club was good. Also from this, it can be seen that by providing the tip corner portion region 8 and the reinforcing portion 9 on the back side of the head 1, it is possible to improve the feel at impact.

  Next, modified examples of the shape of the head 1 shown in FIGS. 1 to 3 will be described with reference to FIGS. 4 and 5.

  In the embodiment shown in FIGS. 1 to 3, the end portion of the reinforcing portion 9 facing the tip corner portion region 8 is linear, but the end facing the tip corner portion region 8 as shown in FIG. You may provide the reinforcement part 10 in which a part is curvilinear. Also in this case, it is considered that the tip corner portion region 8 can be vibrated positively when the ball is hit with the head 1 as in the case of the embodiment shown in FIGS. Therefore, it is possible to improve the feel at impact as in the case of the embodiment shown in FIGS.

  In the above-described embodiment, the case where the present invention is applied to the head 1 of the cavity back type iron golf club has been exemplified. However, the present invention can also be applied to a plain back type iron golf club.

  Also in this case, as shown in FIG. 5, if a reinforcing portion 10 having a portion extending obliquely from the top edge portion 4 toward the toe portion 5 along a part of the tip corner portion region 8 is provided. Good. Thereby, it is considered that the feel at impact can be improved as in the case of the above-described examples.

  Although the embodiment of the present invention has been described above, the above-described embodiment can be variously modified. The scope of the present invention is not limited to the above-described embodiment. The scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a rear view of the head of the iron golf club in one embodiment of the present invention. It is the figure which looked at the head shown in FIG. 1 from the toe part side. It is a figure which shows typically an example of the deformation | transformation state of the head shown in FIG. It is a figure which shows the modification of the shape of a reinforcement part. It is a figure which shows the other modification of the shape of a reinforcement part.

Explanation of symbols

  1 head, 2 face part, 3 back part, 4 top edge part, 5 toe part, 6 heel part, 7 sole part, 8 tip corner part region, 9, 10 reinforcement part.

Claims (2)

A cavity back type iron golf club head,
A face portion (2) having a ball striking surface;
A back portion (3) located on the back side of the face portion (2);
A top edge portion (4), a toe portion (5), a sole portion (7) and a heel portion (6) located around the face portion (2);
A tip corner portion region (8) located in the vicinity of a connection portion between the top edge portion (4) and the toe portion (5);
Provided on the back portion (3) side and extending obliquely from the top edge portion (4) toward the toe portion (5) so as to define a part of the tip corner portion region (8). has an upper edge portion, said tip said top edge portion (4) from the toe portion (5) in the reinforcement portion that is reinforced by thicker than the peripheral region to reach the corner areas (8) (9) It equipped with a door,
Of the tip corner area (8),
The thickness of the inner region surrounded by the peripheral region reaching the toe portion (5) from the top edge portion (4) and the upper edge of the reinforcing portion (9) is larger than the thickness of the peripheral region. An iron golf club head which is thin and provided with the reinforcing portion (9) at a position of a vibration node when the iron golf club head is vibrated by impacting a sweet spot of the face portion (2) . An iron golf club comprising the iron golf club head according to claim 1 .

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