JP2001070484A - Golf club head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an excellent silencing effect without exerting an adverse influence on performance, such as narrowing of a sweet area, by forming a through-hole for communicating the hollow part of the crown part of a golf club head having specific volume and having the hollow part with the outdoor air and fitting a silencing member into this through-hole. SOLUTION: The through-hole 3 for communicating the hollow part 5 of the crown part 2 of the large-sized golf club head 1 having the hollow part 5 and volume of >=300 ml with the outdoor air is formed at the crown part. The silencing member 4 is fitted and fixed into this through-hole 3. As a result, metallic sounds at the time of impact are decreased without exerting the adverse influence on the performance, such as narrowing of the sweet area. The silencing member 4 is formed by using a polyester elastomer or the like so as to have a silencing body part 41 which is brought into tight contact with the hole wall 31 of the through-hole 3, a design display part 42 which is exposed on the front surface side of the crown part 2 and an annular detaining part 43 which is disposed at the other end of the silencing body part 41.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a golf club head made of metal.

[0002]

2. Description of the Related Art In a golf club head made of metal having a hollow portion, a high metal sound peculiar to metal sounds at the time of hitting, which gives a player uncomfortable feeling. Also,
In recent years, in a large golf club head having a volume of 300 ml or more, the thickness of the outer shell forming the golf club head is reduced by increasing only the volume without increasing the mass according to required design items. Will be done. For this reason, the vibration generated at the time of hitting the outer shell is hardly attenuated, and the hollow part is also large, so that the unpleasant metal sound resounding by the vibration is increasing. Conventionally, a method of filling a hollow portion of a golf club head with a filler such as foamable polyurethane has been known as a means for reducing such a high metallic noise.

[0003] In addition, Utility Model Registration Publication No. 252
No. 6923, a metal golf club head having a hollow chamber portion, wherein a sheet member or a paint having a vibration damping property is partially coated on an inner surface of a thin wall portion of the surrounding wall forming the hollow chamber portion. A golf club head characterized in that the head is attached to the golf club is disclosed.

[0004]

However, in the above-described golf club head in which the filler is filled in the hollow portion, the filler is filled in the entire hollow portion, so that the mass is reduced not only in the outer peripheral portion but also in the hollow portion. Since it is also applied to the portion, the mass distribution shifts from the periphery of the outer shell toward the center portion, and as a result, there is a disadvantage that the moment of inertia of the golf club head is reduced. This resulted in a golf club head with a narrow sweet area, which was not very good in performance. Furthermore, if the volume is 300
In the case of a golf club head having a size of at least ml, the amount of the filler to be filled in the hollow portion is also increased, and the performance is becoming more and more disadvantageous. Also,
In increasing the size of the golf club head, the mass is increased without increasing the mass, so the increase in the weight of the filler material becomes a barrier to increasing the size of the golf club head.
It can be said that putting a filler into a large head of 300 ml or more is not preferable.

Also, Japanese Utility Model Registration Publication No. 2526923
In the golf club head disclosed in No. 2, the sheet or paint having vibration damping properties is configured to be partially attached to the inner surface of the thin wall portion of the surrounding wall forming the hollow chamber, Before the metal golf club head having a hollow portion, such as welding, polishing, etc., required for the production of a metal golf club head, the sheet or paint having the vibration damping property must be adhered to the inner surface of the hollow chamber portion. There was a problem that the above work efficiency was poor. Furthermore, there is also a problem that the adhesive, the adhesive or the paint for attaching the sheet is deteriorated by being affected by heat due to welding, polishing, etc., and the sheet or the paint is peeled off when hit. there were.

Accordingly, the present invention provides a sound-absorbing member that can be easily attached without being affected by the manufacturing process of the head, can be attached without peeling off, and does not adversely affect performance such as reducing the sweet area. Another object of the present invention is to provide a golf club head capable of sufficiently exhibiting a sound deadening effect, thereby improving a golfer's discomfort and discomfort.

[0007]

Therefore, in order to achieve the above object, the invention according to claim 1 has a volume having a hollow portion of 3 μm.
In a metal golf club head having a size of 00 ml or more, a through hole is formed in a crown portion of the golf club head from the hollow portion to the outside air, and a muffling member is fitted and fixed to the through hole. Golf club head.

According to a second aspect of the present invention, in the first aspect, the muffling member is provided at one end of the muffling main body portion, which is in close contact with a hole wall of the through-hole, and at a crown surface side. And a ring-shaped locking portion provided at the other end of the muffling main body portion and in contact with the inner wall of the crown.

According to a third aspect of the present invention, the muffler according to the first or second aspect is a polyester elastomer.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to preferred embodiments which are described in detail with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of the present invention, FIG. 2 is a view for explaining a configuration of a sound deadening member 4 fitted and fixed to a golf club head 1, and FIG. FIG. 3 is a diagram illustrating a state in which the crown portion 2 of the head 1 is fitted and fixed in a through hole 3 of the crown portion 2. In the golf club head of the present invention, as in the embodiment shown in FIG.
A through-hole 3 communicating with the outside air from the hollow portion 5 is formed in the crown portion 2 of the first embodiment, and a muffling member 4 is fitted and fixed in the through-hole 3. Therefore, it is possible to reduce the metallic sound at the time of hitting without affecting the pre-designed mass distribution of the golf club head and without adversely affecting the performance such as reduction of the sweet area.

As shown in FIG. 2, the sound deadening member 4 in this embodiment is provided at one end of the sound deadening main body 41, which is in close contact with the hole wall 31 of the through hole 3. The muffler body 41 is provided with a design display section 42 that is exposed on the front side of the crown section 2 and an annular locking section 43 provided at the other end of the muffling main body section 41. As shown in FIG. 3, the sound absorbing member 4 is fitted and fixed to the head from the side of the annular locking portion 43 into the through hole 3, and the annular locking portion 43 projects into the hollow portion 5. It is locked by contacting the crown inner wall 21. Therefore, since the muffling member 4 can be attached after processing operations such as welding, polishing, and finishing of the golf club head, the attaching operation is simple, and furthermore, there is no possibility that the muffling member 4 will be peeled off by an impact at the time of hitting. Further, as shown in FIG. 4, since the silencing main body portion 41 is in close contact with the hole wall 31 of the through hole 3,
Vibration of the outer shell at the time of impact is effectively attenuated, so that a noise reduction effect can be obtained efficiently.

The size of the through hole 3 is as follows.
Preferably, the diameter is about 5 to 15 mm. 5 in diameter
If the diameter is less than 0 mm, the contact area between the hole wall 31 and the noise reduction main body 41 is too small, so that it is difficult to obtain the effect of attenuating the vibration of the crown portion 2. Therefore, the noise reduction effect cannot be expected, and even if the diameter is 15 mm or more, This is because the noise reduction member only becomes large, and no further effect can be obtained in the noise reduction effect.

The material of the silencing member 4 is as follows.
Although a thermoplastic resin or a rubber-based material is conceivable, the silencing characteristics are good, the annular locking portion 43 is fitted into and protruded from the through-hole 3, and has an appropriate deformability for locking and the through-hole 3. It is preferable to use a polyester-based elastomer in consideration of the ability to follow the contact surfaces such as the hole wall 31 and the crown portion 2.

Further, the design display section 42 of the muffling member 4
By applying an adhesive to the bottom surface 44 of the crown member 2 or by using a double-sided tape, the silencing member 4 is attached to the crown portion 2.
It is also possible to adhere more firmly to the surface side of.
An elastic adhesive is suitable for bonding the polyester-based elastomer.

[0015]

As described above, in the metal golf club head having a hollow portion having a volume of 300 ml or more according to the present invention, a through hole is formed in the crown portion from the hollow portion to the outside air, and a muffling member is provided in the through hole. The effect of being able to efficiently reduce the metal sound at the time of hitting without affecting the mass distribution even in a large golf club head, and having no adverse effect on the performance, such as a decrease in the sweet area, even if the golf club head is fitted and fixed. To play. The muffling member is composed of a muffling main body, an annular locking portion, and a design display. When the muffling member is fixed, the muffling member is brought into close contact with the hole wall of the through-hole. Vibration of the outer shell at the time is effectively attenuated, and an effect of efficiently obtaining a silencing effect is obtained. Therefore, an effect is provided that a golf club in which the golfer's discomfort and discomfort are improved can be provided.

Further, the muffling member is fixed by being fitted into the through-hole with the annular locking portion and being locked by being in contact with the inner wall of the crown. Therefore, since the muffling member can be mounted after processing operations such as welding, polishing, and finishing of the golf club head, the mounting operation is simple, and the effect of preventing the golf club head from peeling off due to impact at the time of hitting or the like is exerted. In addition, since the design display portion that is exposed on the surface side of the crown portion of the golf club head is formed, it is possible to achieve an excellent design property that cannot be obtained by simply fitting and fixing the through hole.

Further, since the material of the silencing member is a polyester-based elastomer, the silencing member has an effect of good silencing characteristics, has an appropriate deformability, and
Since the followability of the through-hole to the contact surface such as the hole wall and the crown portion is excellent, it also has an effect of easily protruding and locking after being inserted into the through-hole.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an embodiment of a golf club head according to the present invention.

FIG. 2 is an explanatory diagram illustrating a configuration of a noise reduction member of the present embodiment.

FIG. 3 is an explanatory view showing a state in which the sound deadening member of the present embodiment is fitted and fixed in a through hole.

FIG. 4 is an explanatory view showing a state in which the silencing main body of the present embodiment is in close contact with a hole wall of a through hole.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 golf club head 2 crown portion 3 through hole 4 noise reduction member 5 hollow portion 21 crown inner wall 31 hole wall 41 noise reduction main body portion 42 design display portion 43 annular locking portion 44 bottom surface

Claims (3)

[Claims] In a metal golf club head having a hollow portion having a volume of 300 ml or more, a through hole is formed in a crown portion of the golf club head from the hollow portion to the outside air, and a muffling member is formed in the through hole. Wherein the golf club head is fitted and fixed. 2. The muffling member, wherein the muffling body is provided at one end of the muffling main body and the muffling main body which is in close contact with a hole wall of the through-hole, and the design display portion is exposed on the crown surface side. 2. The golf club head according to claim 1, comprising an annular locking portion provided at the other end of the portion and in contact with the inner wall of the crown. 3. The golf club head according to claim 1, wherein the muffling member is a polyester-based elastomer.