JPH08568U - Metal Wood Golf Club Head - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: It is easy to fix a weight, and there is no problem that the weight is dropped into the hollow portion of the head due to the impact of a hit ball, and the shaft is easily assembled to the hosel portion. It is an object of the present invention to provide a metal wood golf club head that can be manufactured and can further reduce the center of gravity. A tip 2a of a hosel portion 2 is projected into a head hollow portion 1a of a club head 1, and the tip 2a of the projected hosel portion 2, that is, an inner wall surface 3a of a deep end portion of a shaft insertion hole 3a. A flanged shaft 4 and a stopper portion 5 for the weight W are formed so as to protrude toward the inside. As a result, the contact area between the club head 1 and the shaft 4 can be increased to increase the feeling of unity and to improve the feeling, and in the case of the metal wood golf club head 1 having a hollow structure, The center of gravity can be easily lowered.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 This invention relates to a metal wood golf club head. More specifically, it facilitates shaft assembly, effectively prevents weights from falling into the hollow portion of the club head, and lowers the center of gravity of the club head. The present invention relates to a metal wood golf club head capable of achieving

Conventionally, a metal wood golf club head has a shaft insertion hole 3 formed in the hosel portion 2 of the club head 1 as shown in FIGS. 4 and 5, and the shaft insertion hole 3 is formed in the shaft insertion hole 3. The club shaft (not shown) was inserted and fixed. As a result, the shaft insertion hole 3 formed in the hosel portion 2 is formed in the hollow portion 1a of the club head 1 as shown in FIG.

[0003]

[Problems to be solved by the device]

 However, in the case where the shaft insertion hole 3 is directly communicated with the hollow portion 1a of the club head 1 with a predetermined inner diameter as described above, in order to adjust the weight of the club head 1, the tip side of the shaft is adjusted. When attaching the weight to the tip, it was extremely difficult to fix the weight, and there was the problem that the weight would fall into the hollow part of the head due to the impact of the hit ball.

Further, when the shaft is inserted into the shaft insertion hole 3 during the assembly of the shaft, the shaft is inserted into the hollow portion 1a of the club head 1, so that it is difficult to match the insertion depth to the hosel portion 2. Further, there is a problem that it is difficult to lower the center of gravity with the conventional club head 1. This invention was devised by focusing on such conventional problems. Even when a weight is attached to the tip end of the shaft on the chip side, the weight can be easily fixed and the weight is impacted by a hit ball. It is an object of the present invention to provide a metal wood golf club head which has no problem of falling into the hollow part of the head, can easily assemble the shaft to the hosel part, and can further reduce the center of gravity. To do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has a hosel part projecting into the hollow part of the head of the club head, and the deep end part of the shaft insertion hole projecting into the hollow part of the head or a part of the inner wall surface in the vicinity thereof or The gist of the invention is that a flange-shaped stopper portion is formed so as to project inward on the entire circumference.

A weight having a collar is directly brought into contact with the flange-shaped stopper portion, and the tip of the shaft on the tip side of the shaft is positioned on the collar of the weight, and the collar of the weight is attached to the stopper portion. It is also possible to press and fix. According to this invention, the hosel portion is projected into the hollow portion of the head of the club head as described above, and a part or the entire circumference of the inner wall surface at or near the deep end portion of the shaft insertion hole projected into the hollow portion of the head is provided. Since the flange-shaped stopper part is formed to project inward, when inserting the shaft into the shaft insertion hole formed in the hosel part and assembling, it is possible to position by simply inserting the shaft until it contacts the stopper part. In addition, even when a weight is attached to the tip end portion of the shaft, the weight does not fall into the hollow portion of the head due to the impact of a hit ball because the weight contacts and is supported by the stopper portion.

Further, the hosel portion is projected into the hollow portion of the head of the club head, and a flange-shaped stopper portion is provided at the tip of the hosel portion so as to project inward, and a weight is attached to the stopper portion. The center of gravity can be easily lowered.

[0008]

[Embodiment of device]

 Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, in the following description, the same components as those of the above-described conventional example are denoted by the same reference numerals. FIG. 1 is a sectional view of a hosel portion 2 of a metal wood golf club head 1 embodying the present invention, and FIG. 2 shows a shaft insertion hole 3 formed in the hosel portion 2 and a weight W attached to a tip end portion thereof. A cross-sectional view of the inserted shaft 4 is shown.

The tip 2 a of the hosel portion 2 is projected into the hollow head portion 1 a of the club head 1, and the projected tip 2 a of the hosel portion 2, that is, the inner wall surface 3 a at the deep end of the shaft insertion hole 3. A shaft 4 and a stopper portion 5 for the weight W are formed so as to protrude toward the inside. As described above, the tip 2a of the hosel portion 2 is configured to project into the hollow head portion 1a of the club head 1 to increase the contact area between the club head 1 and the shaft 4 to increase the feeling of unity. The ring can be made good, and in the case of the metal wood golf club head 1 having a hollow structure, the center of gravity can be easily reduced, and when the weight W is attached, the club head 1 can be further improved. It is possible to lower the center of gravity of.

As the shape of the stopper portion 5, various shapes are conceivable as shown in FIGS. 3 (a), 3 (b), 3 (c), 3 (d) and 3 (e). 3 (a) shows a flange-shaped projection 6a formed on the inner wall surface 3a at the deep end of the shaft insertion hole 3, and FIG. Four protrusions 6b are formed at 90 degree intervals, and FIG. 3 (c) shows a flange-shaped protrusion 6c formed on the inner wall surface 3a of the shaft insertion hole 3 at about 180 degrees. Is.

Further, FIG. 3D shows a stopper 5 formed by forming a projection 6d so as to close the shaft insertion hole 3 at approximately 180 degrees, and FIG. 3 is a perspective view showing the protrusion 6c of (c) in FIG. The position where the stopper portion 5 is formed is not limited to the inner wall surface 3a of the deep end portion of the shaft insertion hole 3 described above, but may be formed in the vicinity thereof.

With the above configuration, even when the shaft 4 is inserted into the shaft insertion hole 3 formed in the hosel portion 2 for assembly, the positioning can be performed by inserting the shaft 4 until it comes into contact with the stopper portion 5. Even if the weight W is attached to the tip end portion of the shaft 4 on the tip side, the weight W is supported by contacting the stopper portion 5, and the tip portion of the shaft 4 on the tip side of the shaft 4 contacts the flange portion Wa of the weight W. By fixing them so that they are in contact with each other and sandwiched between them, it is possible to solve the problem that the weight W is moved by the impact of a hit ball or is dropped into the hollow head portion 1a.

Further, the tip 2a of the hosel portion 2 is projected into the head hollow portion 1a of the club head 1, and the tip 2a is provided with a flange-shaped stopper portion 5 projecting inward. By attaching the weight W to the golf club head made of metal, which has a hollow structure, it is possible to easily lower the center of gravity of the club head 1.

Further, the size of the opening 7 which is connected to the head hollow portion 1a of the club head 1 excluding the stopper portion 5 of the shaft insertion hole 3 is made of urethane for the purpose of reinforcing the strength or improving the hitting sound in the head hollow portion 1a. When injecting foam or the like for foaming, it is necessary to open the urethane foam in such a size as not to hinder the injection. In FIG. 2, reference numeral 8 denotes a socket that covers the end of the hosel portion 2 and the shaft 4. Alternatively, the tip 2a of the hosel portion 2 which is projected into the hollow portion 1a of the club head 1 may be fixed to a part of the main body of the club head 1.

[0015]

[Effect of device]

 In this invention, the hosel portion is projected into the hollow portion of the head of the club head as described above, and a portion or the entire circumference of the inner wall surface near the deep end portion of the shaft insertion hole projected into the hollow portion of the head is formed. Since the flange-shaped stopper is projected inward, the shaft can be inserted into the shaft insertion hole formed in the hosel part and then assembled by simply inserting the shaft until it comes into contact with the stopper. As a result, it is extremely easy to assemble, and it is particularly effective when a socket is not used in metal wood. Also, when a weight is attached to the tip end of the shaft, the weight of the Since the weight comes into contact with and is supported by the stopper portion, the weight can be completely fixed. Wait at impact by the balls there is an effect that it is possible to prevent effectively from falling off the head cavity. Further, particularly in the case of a metal wood golf club head having a hollow structure, there is an effect that the center of gravity of the club head can be easily lowered.

[Brief description of drawings]

FIG. 1 is a sectional view of a hosel portion of a metal wood golf club head embodying the present invention.

FIG. 2 is a cross-sectional view showing a state in which a shaft having a tip-side tip end attached with a weight is inserted into a shaft insertion hole formed in a hosel portion.

3 (a), (b), (c), (d), (e) are:
It is explanatory drawing which shows various shapes of the stopper part formed in the inner wall surface of the deep end part of a shaft insertion hole.

FIG. 4 is a front view of a conventional metal wood golf club head.

FIG. 5 is a sectional view of a hosel portion of a conventional club head.

[Explanation of symbols]

1 wood golf club head 2 hosel part 2a tip of hosel part 3 shaft insertion hole 3a inner wall surface 4 shaft 5 stopper part W weight.

Claims (2)

[Scope of utility model registration request] 1. A metal wood golf club head in which a shaft insertion hole is formed in a hosel portion of a metal wood golf club head, and a club shaft is inserted and fixed in the shaft insertion hole. Of the club head into the hollow portion of the club head, and a flange-shaped stopper portion toward the inside is provided at a part or the entire circumference of the inner wall surface at or near the deep end portion of the shaft insertion hole projected into the hollow portion of the head. A metal wood golf club head that is formed by projecting. 2. A weight having a collar is directly brought into contact with the flange-shaped stopper portion, and the tip of the shaft on the tip side of the shaft is positioned on the collar of the weight, and the collar of the weight is pressure-contacted and fixed to the stopper portion. The metal wood golf club head according to claim 1.