JPH0593468U - Wood golf club - Google Patents

Abstract

(57) [Abstract] [Purpose] Positioned at the neck portion of the club head body by embedding and reinforcing a reinforcing core material inside the part of the connecting member that connects the club head body and the shaft subject to repeated bending fatigue. It is an object of the present invention to provide a wood golf club having improved durability by effectively preventing breakage of the connecting member. [Structure] 1 is a club head main body, 2 is an insertion hole, 3 is a connecting member formed in a bent shape by a light metal material such as aluminum, and a shaft insertion into which a shaft 4 is inserted is provided at an upper end side of the connecting member 3. A hole 6 is formed, and a hollow portion 9 having a predetermined length from the lower end side is formed in the insertion portion 8 to be inserted into the insertion hole 2 formed in the club head body 1. In the hollow portion 9 formed in the connecting member 3, a reinforcing core material 10 made of a metal material such as iron is integrally embedded via an adhesive or the like. The embedding position of the reinforcing core material 10 Is the neck portion X of the club head body 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wood golf club, and more specifically, it reinforces a portion of a connecting member that connects a club head body and a shaft to which repeated bending fatigue occurs, thereby effectively preventing breakage due to repeated bending fatigue. It relates to the Wood Golf Club.

[0002]

[Prior Art]

 Conventionally, in a wood golf club, as a connection structure between a club head body and a shaft, for example, a method of inserting a shaft into a shaft hole formed in the club head body and fixing the shaft, and FIGS. 7 and 8 are shown. As described above, there is known a method of attaching the shaft 4 to the insertion hole 2 formed in the club head body 1 via the connecting member 3 made of a light metal such as aluminum. The connecting member 3 in the case of FIG. 7 has a solid portion 3a to be inserted into the insertion hole 2 of the club head body 1, and the connecting member 3 in the case of FIG. This is a case where the portion 3b to be inserted into has a hollow portion 5, and 6 indicates a shaft insertion hole formed in the connecting member 3.

[0003]

[Problems to be solved by the device]

 By the way, in the case of the structure in which the shaft 4 is mounted via the connecting member 3 as described above, the repeated impact load F acts on the neck portion X of the connecting member 1, that is, the insertion opening portion to the club head body 1. However, there is a problem that the neck portion X of the connecting member 1 is broken due to repeated bending fatigue. Particularly, in the case of the connecting member 1 called a bent neck in which the connecting member X is bent, the bending fatigue due to repetition is large and the neck portion X of the connecting member 1 is severely broken.

The present invention has been devised in view of such conventional problems. A reinforcing core material is embedded inside a portion of a connecting member that connects a club head body and a shaft to which repeated bending fatigue occurs. It is an object of the present invention to provide a wood golf club having improved durability by effectively preventing breakage of the connecting member located at the neck portion of the club head main body by reinforcing by means of reinforcement.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the gist of the present invention is to embed a reinforcing core member in a portion of the neck portion of the club head body which receives repeated bending fatigue. The shape of the connecting member may be a bent shape or a straight shape, and a material having a rigidity and bending fatigue strength higher than that of the connecting member is used as the reinforcing core material. ing.

[0006]

[Function of the device]

 This invention is configured as described above, and by embedding a reinforcing core material in the portion of the club head body that is subjected to repeated bending fatigue of the connecting member located at the neck portion, the portion of the connecting member that is subjected to repeated bending fatigue is Since it can be reinforced, even if a repeated impact load is applied to the insertion opening portion into the club head body, the neck portion of the connecting member is not easily broken due to repeated bending fatigue.

[0007]

[Example of device]

 An embodiment of the present invention will be described below with reference to the accompanying drawings. The same components as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted. FIG. 1 is a front view of a wood golf club head embodying the present invention, and FIG. 2 is a partially longitudinal front view of a shaft mounting portion of the wood golf club head. 1 is a club head main body, 2 is an insertion hole, and 3 is a hole. A connecting member formed of a light metal material such as aluminum in a bent shape is shown, and a shaft insertion hole 6 into which the shaft 4 is inserted is formed on the upper end side of the connecting member 3 and formed on the club head body 1. A hollow portion 9 having a predetermined length from the lower end side is formed in the insertion portion 8 which is inserted into the insertion hole 2.

As shown in FIGS. 2 and 3, a reinforcing core material 10 made of a metal material such as iron is integrally embedded in the hollow portion 9 formed in the connecting member 3 via an adhesive or the like. The embedding position of the reinforcing core material 10 is the neck portion X of the club head main body 1, that is, the insertion opening portion of the connecting member 3 into which the repeated impact load F acts on the club head main body 1. As shown in FIG. 2, the length a of the connecting member 3 protruding upward from the end face of the insertion hole 2 of the club head body 1 is 3 mm or more, preferably about 5 mm. 9 The length b protruding inward is preferably 10 mm or more, and it is not preferable to use a too long reinforcing core 10 because the weight of the club head body 1 becomes large.

Note that the reinforcing core material 10 is not limited to the metal material as in the above embodiment as long as it is a material having rigidity and bending fatigue strength higher than that of the material of the connecting member 3, and for example, bending material When the reinforcing core material 10a is made of lightweight carbon fiber reinforced plastic (CFRP), which has high rigidity and fibers are arranged in the longitudinal direction, as shown in FIG. 4, the hollow portion of the connecting member 3 is used. It is also possible to embed it in the whole 9.

FIG. 5 is a partially longitudinal front view of a shaft mounting portion of a wood golf club head showing a third embodiment of the present invention. In this embodiment, the connecting member 3 is the same as the above embodiment. This is an example in which a straight member is used without bending, and this embodiment is similar to the above embodiment in that the predetermined length is provided in the hollow portion 9 of the connecting member 3 located at the neck portion X of the club head body 1. Since the reinforcing core material 10c is embedded, and the length and material of the reinforcing core material 10c are the same as those in the above-mentioned embodiment, the same reference numerals are given and the description thereof will be omitted.

Further, FIG. 6 is a cross-sectional view of a connecting member 3 and a reinforcing core member 10d according to a fourth embodiment of the present invention. In this embodiment, the reinforcing core member 10d is firmly attached to the connecting member 3. The tip of the reinforcing core member 10d is formed in a screw shape so that the reinforcing core member 10d can be fixed to the above and the assembly workability is improved. Since the other construction is the same as that of the first embodiment, the same reference numerals are given and the description thereof is omitted.

[0012]

As described above, according to the present invention, since the reinforcing core material is embedded in the portion of the club head body where the connecting member located at the neck portion of the club head body undergoes repeated bending fatigue as described above, the neck portion of the club head body is This has the effect of effectively preventing breakage of the connecting member located and improving durability. Further, there is an effect that the weight of the club head body can be easily adjusted by arbitrarily setting the material length of the connecting member.

[Brief description of drawings]

FIG. 1 is a front view of a wood golf club head embodying the present invention.

FIG. 2 is a partially longitudinal front view of a shaft mounting portion of a wood golf club head.

FIG. 3 is a cross-sectional view of a connecting member and a reinforcing core material.

FIG. 4 is a sectional view of a connecting member and a reinforcing core member according to a second embodiment of the present invention.

FIG. 5 is a partially longitudinal front view of a shaft mounting portion of a wood golf club head showing a third embodiment of the present invention.

FIG. 6 is a sectional view of a connecting member and a reinforcing core member showing a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view of a conventional connecting member.

FIG. 8 is a cross-sectional view of a conventional connecting member.

[Explanation of symbols]

1 club head body 2 insertion hole 3 connecting member 4 shaft 6 shaft insertion hole 8 insertion portion 9 hollow portion 10 reinforcing core material X neck portion F repeated impact load

Claims (4)

[Scope of utility model registration request] 1. A wood golf club formed by connecting a club head main body and a shaft via a connecting member,
A wood golf club, wherein a reinforcing core material is embedded in a portion of the club head main body that is subjected to repeated bending fatigue of the connecting member located at the neck portion. 2. The wood golf club according to claim 1, wherein the connecting member has a bent shape. 3. The wood golf club according to claim 1, wherein the connecting member is linear. 4. The wood golf club according to claim 1, wherein a material having higher rigidity and bending fatigue strength than the material of the connecting member is used as the reinforcing core material.