JP2008086337A - Golf club with hollow head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club with a hollow head, which is capable of disposing a weight adjusting material in a desired area separated from filling holes. <P>SOLUTION: This golf club is provided with one or a plurality of filling holes comprising filling holes K1, K2 and K3 penetrating through walls 10B of side areas 10T, 10B and 10H of a hollow head or through-holes for fixing a shaft, a storage part SB for at least one filling hole K2 formed at a prescribed position in the head separated from the position and surrounded with a rib R3 raised and integrated with the inner wall of the head outer shell wall 10S, and guide passages AB interposed between the storage part and the filling holes, guiding liquid matter filling via the filling holes to the storage part, having a width narrower than the width of the storage part and each having a pair of ribs R1 and R2 raised and integrated with the inner face of the head outer shell wall as the both side walls; and the ribs of the guide passage are connectedly integrated with the rib 3 surrounding the storage part so as to communicate the guide passage with the storage part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a golf club having a so-called hollow type head also called a wood head.

The manufacturer manufactures one type of hollow head, puts a weight adjusting material inside it, changes the position of the center of gravity and moment of inertia, and prepares multiple types of heads with a weight arrangement that matches the golfer's striking habit. In a store, considering the hitting habit of a golfer who is a customer, a weight adjusting material is selected as appropriate, and a head having a weight arrangement that matches the hitting habit of the golfer is provided. The following patent document discloses such a weight adjustment structure.
JP-A-8-112379 JP 2002-11123 A JP 2000-325507 A JP 2004-121744 A

However, in Patent Documents 1 and 2, there is no delimiter in the area where the weight is arranged, and the weight arrangement structure spreads over a wide internal area surrounded by the wall that forms the outline of the head, and a specific small desired range is selected. It cannot be installed. In patent documents 3 and 4, although the arrangement | positioning area | region of a weight adjusting material can be specified with a partition, it is the structure arrange | positioned only near the injection hole.
Therefore, the problem to be solved is to provide a golf club having a hollow head in which a weight adjusting material can be disposed in a desired region separated from an injection hole.

  In the first aspect of the invention, there is one or a plurality of injection holes, each of which is an injection hole penetrating the wall of the side region of the hollow head or a through hole for fastening the shaft, and at least one injection hole is separated from its position. A receiving portion surrounded by a rib standing and integrated on the inner surface of the outer wall of the head is provided at a predetermined position in the head, and is interposed between the receiving portion and the injection hole, and the liquid poured through the injection hole An object can be guided to the housing part, and has a guide path that is narrower than the housing part and has a pair of ribs on both side walls that are vertically integrated on the inner surface of the head outer wall. Provided is a golf club having a hollow head, wherein a rib of a road is connected and integrated with a rib surrounding the housing portion, and a guide path is continuous with the housing portion.

In the second aspect of the invention, there is one or a plurality of injection holes each consisting of an injection hole penetrating the wall of the side region of the hollow head or a through hole for fastening the shaft. A hollow head having a receiving portion in another surface area different from the surface area of the head, and having a guide path capable of guiding the liquid material poured through the injection hole to the receiving portion. Provide a golf club.
When the injection hole is a shaft fastening through hole, the surface area of the head where the injection hole is located can be considered as the crown area.
Regarding the distinction of the surface area between the sole part area and the side area, if the ridge line is clear, it can be separated by the ridge line, but if the ridge line is not clear, when the head is placed on the horizontal plane according to the lie angle A range from the horizontal plane to a height of 5 mm is defined as a sole portion.

According to a third aspect of the present invention, there is provided a golf club having the hollow head according to the second aspect, wherein the width of the guide path is narrower than the width of the accommodating portion.
According to a fourth aspect of the present invention, the housing portion is surrounded by a rib that is erected and integrated on the inner surface of the head outer wall, and the guide path is a pair of ribs that are erected and integrated on the inner surface of the head outer wall. And providing a golf club having a hollow head according to a third aspect of the present invention, wherein the guide path rib is connected and integrated with a rib surrounding the housing portion, and the guide path is continuous with the housing portion.

The injection hole into which the liquid weight adjusting material as a liquid material can be injected should not be provided not only in the face region but also in the highly visible crown region or the sole region that is rubbed when hit. Therefore, there is a restriction that the injection hole is provided in the side region of the head except that the through hole for fastening the shaft is used. However, the requirement for the adjustment weight arrangement position may be generated at a position away from the injection hole. Therefore, in the first invention, it is a requirement to provide a guide path to a position separated from the injection hole. The same applies to the second invention.
A narrow guide path is provided by a rib integrated with the outer wall of the head, whereby a liquid weight adjusting material is poured as a liquid material into a receiving portion at a desired position separated from the injection hole. If the solidifies, the weight can be adjusted. That is, the head weight can be adjusted as necessary after the head is formed. In addition, liquid material may remain somewhat stuck to this guideway, but since it is a narrow guideway, the cross-sectional area of the guideway can be reduced, and the amount remaining on the guideway is allowed. It can be reduced as much as possible, and it is not necessary to leave a solidified liquid material as much as possible in an unplanned part. When the weight of only a desired partial region in the head is increased, the vibration state of this portion (accommodating portion) is greatly different from the surrounding portion at the time of hitting, and abnormal noise is generated and the hitting sound is not good. However, since the ribs of the guide path are integrated with the outer wall of the head and are also connected and integrated with the ribs of the housing part, the bending rigidity of the area around the housing part is improved and the concentrated weight of only the housing part is increased. The unpleasantness of the resulting hitting sound can be reduced. In particular, when the thickness of the outer wall where the accommodating portion is located is as thin as 1.5 mm or less, such a tendency becomes strong, and the effect of the ribs is increased.

  In the second invention, the accommodating portion for accommodating the weight adjusting material is located in another surface region different from the surface region of the head where the injection hole is located, that is, separated, but after the head formation, A liquid weight adjusting material can be sent to the accommodating part separated by the guide path, and the weight can be adjusted easily.

In the third invention, the width of the guide path can be made smaller than that of the housing portion, the area of the cross section of the guide path can be reduced, and the amount remaining by sticking here can be reduced as much as possible. Therefore, it is not necessary to leave a solidified liquid as much as possible.
In the fourth invention, the same operational effects as in the first invention are obtained.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a front view of a golf club having a hollow head 10 according to the present invention placed on a horizontal plane at a lie angle θ, FIG. 2 is an enlarged rear view of FIG. 1, and FIG. FIG. 4 is a cross-sectional view taken along line CC of FIG. 4, FIG. 4 is a cross-sectional view taken along line DD of FIG. 3, and FIG. 5 is a cross-sectional view taken along line EE of FIG. The shaft S is inserted and fixed to the hosel part HZ for wearing the shaft. The outer portion of the head 10 includes a back region 10B, a toe region 10T, a side region composed of a heel region 10H, a sole region 10S below the side region, and an upper crown region 10C. And a front face region 10F.

  Three injection holes K1, K2, and K3 are provided in close proximity to the wall of the back region 10B belonging to the side region, and the outside thereof is normally closed by a screw member (not shown). In this example, the hollow head 10 is entirely made of metal. However, only the face region 10F is formed by welding a face member FB formed of a metal plate material having a good resilience different from the others. The crown region may be formed of a material other than metal such as fiber reinforced synthetic resin, but usually the side region and the sole region 10S are integrally formed of a metal such as a titanium alloy by casting.

  In this way, in the side region and the sole region 10S integrally formed of metal, from the injection hole, the side region where the injection hole is located (here, the surface region where the injection hole is located is the back region 10B). The guide paths AB, AB ′, AB ″ are formed using ribs up to a predetermined position in the sole portion region 10S, and the receiving portions SB, SB ′, SB ″ are formed using ribs at the predetermined positions. Is formed. Specifically, with respect to the injection hole K2 at the central position, the back region 10B and the sole can be received so that the liquid weight adjusting material poured through the injection hole K2 can be guided to the storage unit SB. An elongated guide having a U-shaped cross section with ribs R1 and R2 integrally formed with each wall of the section region 10S as left and right walls and the inner surface of the outer wall of the head (the walls of the back region and the sole region) as the bottom surface A path AB is formed.

  The accommodation part SB surrounded by the rib R3 formed integrally with the wall of the sole part region 10S is located at the front part of the guide path. Even though it is surrounded, it is continuous with the guideway AB, and is partially open. The rib R3 is connected and integrated with the pair of ribs R1 and R2. In addition, the width of the accommodating portion SB is wider than a pair of ribs, and a predetermined weight can be disposed in the accommodating portion. A ribbed region is defined by the ribs R1, R3, and R2.

  Here, the liquid weight adjusting material is, for example, a synthetic resin such as an adhesive, or a synthetic resin such as an adhesive in which various metal powders such as stainless steel are added and heavy (a metal repair agent sold by ITW Industry, Inc. "Devcon B" (trade name) and metal repair epoxy sold by Loctite Co., Ltd., which solidify over time or at some heating and stick to the inner surface of the outer wall of the head. In the adhesive containing metal powder, one having high fluidity is preferable, and one-component thermosetting is particularly preferable, but a two-component reactive type may also be used. Further, instead of such a synthetic resin, a low melting point metal (such as tin or lead) can be melted and poured. In that case, the melting point is required to be lower than the material of the head body, and a temperature that does not adversely affect the coating of the head surface is preferable.

  The storage portion SB described above is located in the sole portion region that is close to the face portion region 10F but is separated from the face portion region 10F. The reason why the adjustment weight can be arranged at such a delicate specific desired position is that the liquid weight adjustment material can be sent from the injection hole by using the (elongated) guide path AB. When the height of the rib R3 is 4 mm, the other ribs R1 and R2 may be 3 mm. That is, the rib height of the guide path only needs to be able to guide the liquid material, and can be made lower than the rib height of the housing portion SB. Further, from the viewpoint of the impact sound, the height of the rib and the rib thickness should be set according to the degree to which the bending rigidity of the sole portion region 10S is improved, that is, relative to the wall thickness of the sole portion region 10S. It is also important. In this way, the ribs standing and integrated on the inner surface of the outer wall of the head are open on the upper edge side of the ribs, so that a mold for casting can be easily formed. There is no need to prepare a special expensive complex mold to form.

  The liquid weight adjusting material poured through the other injection hole K1 can be accommodated in the other accommodating portion SB 'through the other guide path AB'. The guide path AB ′ has ribs formed integrally with the walls of the back portion region 10B and the sole portion region 10S as the left and right walls, but the accommodating portion SB ′ has a front portion of these ribs and a wall of the toe portion region 10T. Although the section is formed by the inner surface, the width of the accommodating portion is wider than the width of the guide path.

  As for the injection hole K3, the guide path AB ″ itself is also a rib on one side of the left and right sides, and the other side uses the wall inner surface of the back portion area 10B. The rib of this guide path AB ″ is the back section region 10B and the sole. It is a rib formed integrally with each wall of the partial region 10S. Further, the accommodating portion SB ″ is defined by the tip portion of the rib and the wall inner surface of the heel portion region 10H, but the width of the accommodating portion is wider than the width of the guide path.

  According to the customer's striking rod, one or more appropriate housings are selected from these three housings, and the weight adjusting material is disposed therein.

  FIG. 6 illustrates the case where the injection hole K4 is a through-hole penetrating the hosel portion HZ for fastening the shaft, and is a cross-section by a plane in the toe-heel direction and is a view seen from the back side. In this example, the rib R3 ′ is erected and integrated on the inner surface of the face member FB of the face portion 10F to form the accommodating portion SBH in the center of the face portion region, and the injection hole K4 and the accommodating portion SBH are connected to each other through the guide path ABH. ing. That is, a pair of ribs R1 'and R2' are vertically integrated on the inner surface of the face member FB to form the guide path ABH. The width of this guide path is narrower than the width of the accommodating portion. Each of these ribs R1 'and R2' is connected to the rib R3 '.

  The weight adjustment in this case is mainly to change the hitting feeling at the time of hitting, and the weight adjusting material is preferably a synthetic resin material having high vibration absorption. For example, “Alphagel” (trade name) sold by Geltech is effective.

  FIG. 7 shows another example in which the injection hole K4 is a through-hole penetrating the hosel part HZ, which is a cross-section taken along a plane in the face-back direction, and is a view seen from the toe side. A rib R4 that stands and is integrated in the heel portion region 10H and the sole portion region 10S extends. The position of the rib R4 begins to extend from the heel region 10H at a position where the liquid weight adjusting material poured from the injection hole K4 can be received between the rib and the inner surface of the outer wall of the head. It extends along a boundary portion between 10F and the sole portion region 10S, and this boundary portion is defined as a storage portion. That is, the accommodating part is between the inner face of the face part region and the rib R4. Therefore, a guide path is formed from a predetermined position in the heel part region to a boundary part that is a housing part, and a guide path is formed between the rib R4 and the inner surface of the face part region 10F.

  In this case, the weight adjusting material is provided on the target boundary portion without providing any other extra hole using the through hole K4 for fastening the shaft while providing the rib R4 that accurately partitions the boundary portion. Therefore, it is possible to reduce the bending performance of the face region 10F, and to adjust the CT value, which is a substitute value for the rebound characteristics of the face region 10F, to a small value.

  The present invention can be used for a golf club having a hollow head.

FIG. 1 is a front view of a golf club having a hollow head according to the present invention. FIG. 2 is an enlarged rear view of FIG. FIG. 3 is an enlarged plan view cross-sectional view taken along line CC of FIG. 4 is a cross-sectional view taken along line DD in FIG. 5 is a cross-sectional view taken along line EE in FIG. FIG. 6 is a cross-sectional view of the head portion of another example of the golf club according to the present invention taken along the plane in the toe-heel direction, as viewed from the back side. FIG. 7 is a cross-sectional view of the head portion of another example of the golf club according to the present invention, taken along the plane in the face / back direction, as viewed from the toe side.

Explanation of symbols

10 hollow head AB, AB ′, AB ″, ABH guide path K1, K2, K3, K4 injection hole R1, R2, R3, R3 ′, R4 rib SB, SB ′, SB ″, SBH accommodating portion

Claims (4)

  One or a plurality of injection holes consisting of injection holes penetrating through the wall of the side area of the hollow head or through holes for fastening the shaft, and at least one injection hole at a predetermined position in the head separated from the position A receiving portion surrounded by a rib that stands up and integrated on the inner surface of the outer wall of the head, and is interposed between the receiving portion and the injection hole, and the liquid material poured through the injection hole is placed in the receiving portion. A guide passage having a pair of ribs on both side walls that are vertically integrated with the inner surface of the outer wall of the head, the ribs of the guide passage being the accommodation portion. A golf club having a hollow head, characterized in that a guide path is continuous with the housing portion, and is integrally connected to a rib surrounding the portion.   The surface area of the head in which at least one injection hole has one or a plurality of injection holes, each of which is an injection hole penetrating the wall of the side region of the hollow head, or a through hole for fastening a shaft. A golf club having a hollow head, characterized in that it has a receiving portion in another surface area different from, and has a guide path that can guide the liquid material poured through the injection hole to the receiving portion.   The golf club having a hollow head according to claim 2, wherein a width of the guide path is narrower than a width of the housing portion.   The accommodating portion is surrounded by a rib that is vertically provided and integrated with the inner surface of the head outer wall, and the guide path has a pair of ribs that are vertically provided and integrated with the inner surface of the head outer wall as left and right walls. 4. A golf club having a hollow head according to claim 3, wherein said rib is connected and integrated with a rib surrounding said accommodating portion, and said guide path is continuous with said accommodating portion.

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