JP2008131969A

JP2008131969A - Golf club head

Info

Publication number: JP2008131969A
Application number: JP2006318221A
Authority: JP
Inventors: Seiki Chin; 晴祺陳
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-27
Filing date: 2006-11-27
Publication date: 2008-06-12

Abstract

<P>PROBLEM TO BE SOLVED: To provide a golf club head capable of increasing the joint strength between a face and a shell body. <P>SOLUTION: The golf club head includes a shell body front part 20 and a shell body rear part 30 which are jointed to each other to form the shell body. The shell body front part 20 is made of metal with excellent elasticity, and has the face 21 and an annular fence part 22 around the face 21 to be extended rearward, so that the shell body front part is cup-shaped on the whole. The fence part 22 has a fitting part in the outer end. The shell body rear part 30 is made of light metal with relatively small specific gravity, and has a deep cup shape as a whole. The shell body rear part has a fitting part at the opening end which is fitted to the fitting part of the shell body front part 20. The fitting part of the shell body front part 20 is formed to project, while the fitting part of the shell body rear part 30 is a recessed groove. The shell body rear part 30 includes an apex unit and a bottom unit. A neck part of the golf club head is provided on top of the apex unit. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本考案は、ゴルフクラブヘッド、詳しく言えば、マグネシウムまたはアルミニウムなどの軽質合金を殻体の材質とするゴルフクラブヘッドに関するものである。 The present invention relates to a golf club head, more specifically, a golf club head having a shell made of a light alloy such as magnesium or aluminum.

マグネシウムまたはアルミニウムなどの軽質合金から成形されるゴルフクラブヘッドの殻体は、軽いため、重心が低い超大型のゴルフクラブヘッドを容易に設計することが可能である。特に、マグネシウム合金は、良好な振動吸収性を有するため、ゴルフクラブヘッドの殻体に適用するとされるが、マグネシウム合金は強度があまり大きくないため、フェイスに使うのには適合してない。従って、フェイスの材料は、チタン合金またはステンレスなどの弾性が良好な材料から選ばなければならない。しかし、マグネシウムまたはアルミニウム合金は融点が低いため、チタン合金またはステンレスのフェイスとマグネシウムまたはアルミニウム合金の殻体とをろう付けにより接合することも、一般的な溶接方法により接合することも不可能である。また、両者の材料が異なるため、溶接の接合強度が足りず、接合効果があまりよくない。 Since the shell of the golf club head formed from a light alloy such as magnesium or aluminum is light, it is possible to easily design an ultra-large golf club head having a low center of gravity. In particular, a magnesium alloy has good vibration absorption and is therefore applied to a shell of a golf club head. However, a magnesium alloy is not so strong that it is not suitable for use on a face. Therefore, the material of the face must be selected from materials having good elasticity such as titanium alloy or stainless steel. However, since magnesium or aluminum alloy has a low melting point, it is impossible to join a titanium alloy or stainless steel face and a magnesium or aluminum alloy shell by brazing or by a general welding method. . Moreover, since both materials differ, the joining strength of welding is insufficient and the joining effect is not so good.

本発明の主な目的は、前述のチタン合金またはステンレスのフェイスとマグネシウムまたはアルミニウム合金の殻体との接合問題を克服することを可能にするゴルフクラブヘッドを提供することである。 The main object of the present invention is to provide a golf club head which makes it possible to overcome the aforementioned problem of joining a titanium alloy or stainless steel face and a magnesium or aluminum alloy shell.

上述の目的を達成するために、本発明によるゴルフクラブヘッドは、互いに接合されて殻体を形成する殻体前部と殻体後部を含む。殻体前部は、チタン合金、マルエージング鋼またはステンレスなどの弾性が良好な金属から構成され、フェイスを有し、かつフェイスの周囲に後側へ延伸される環状垣部を有するため、全体の形はカップ状を呈する。垣部は、外端に嵌合部を有し、かつフェイスから垣部の外端までの距離は８ｍｍまたは８ｍｍ以上であり、垣部の厚さは２ｍｍまたは２ｍｍ以下である。殻体後部は、マグネシウムまたはアルミニウム合金などの比重の比較的小さい軽質金属から成形され、全体が深いカップ状を呈し、かつ開口端に殻体前部の嵌合部と嵌め合わされる嵌合部を有する。ゴルフクラブヘッドの殻体のネック部は、殻体後部に設けられる。 To achieve the above object, a golf club head according to the present invention includes a shell front portion and a shell rear portion joined together to form a shell body. The front part of the shell is made of a metal having good elasticity such as titanium alloy, maraging steel or stainless steel, has a face, and has an annular fence extending rearward around the face. The shape is cup-shaped. The fence part has a fitting part at the outer end, and the distance from the face to the outer end of the fence part is 8 mm or 8 mm or more, and the thickness of the fence part is 2 mm or 2 mm or less. The rear part of the shell is formed from a light metal having a relatively low specific gravity, such as magnesium or aluminum alloy, and has a deep cup shape as a whole, and has a fitting part fitted to the fitting part of the front part of the shell at the open end. Have. The neck portion of the shell of the golf club head is provided at the rear of the shell.

以下、二つの実施例を挙げ、図面に基づいて説明を進める。
図に示すように、本発明の第一実施例によるゴルフクラブヘッド１０は、殻体前部２０と殻体後部３０から構成される。
殻体前部は、チタン合金、ステンレスまたはマルエージング鋼などの弾性が良好な金属から構成され、フェイス２１を有し、かつフェイス２１の周囲に後側へ延伸される環状垣部２２を有するため、全体の形はカップ状を呈する。垣部２２は、外端に嵌合部２３を有する。かつ垣部２２においてフェイス２１から垣部の外端までの距離Ｗは８ｍｍまたは８ｍｍ以上であり、垣部２２の厚さＤは２ｍｍまたは２ｍｍ以下である。本実施例では、Ｗは１０ｍｍ、Ｄは１．５ｍｍである。 Hereinafter, two examples will be given and the description will proceed based on the drawings.
As shown in the figure, the golf club head 10 according to the first embodiment of the present invention comprises a shell front portion 20 and a shell rear portion 30.
The shell front part is made of a metal having good elasticity, such as titanium alloy, stainless steel, or maraging steel, and has a face 21 and an annular fence 22 extending rearward around the face 21. The overall shape is cup-shaped. The fence part 22 has a fitting part 23 at the outer end. The distance W from the face 21 to the outer end of the fence part in the fence part 22 is 8 mm or 8 mm or more, and the thickness D of the fence part 22 is 2 mm or 2 mm or less. In this embodiment, W is 10 mm and D is 1.5 mm.

殻体後部３０は、マグネシウムまたはアルミニウム合金などの比重の比較的小さい軽質金属から成形され、全体が深いカップ状を呈し、かつ開口端に前述の殻体前部２０の嵌合部２３と嵌め合わされる嵌合部３１を有する。本実施例では、殻体前部２０の嵌合部２３は突出状を呈し、殻体後部３０の嵌合部３１の外側壁面から陥凹状溝の溝壁までの厚さＳは３ｍｍ以下であり、本実施例では、厚さＳは１．５ｍｍである。 The shell rear portion 30 is formed of a light metal having a relatively low specific gravity such as magnesium or aluminum alloy, has a deep cup shape as a whole, and is fitted to the fitting portion 23 of the shell front portion 20 at the opening end. The fitting part 31 is provided. In this embodiment, the fitting portion 23 of the shell front portion 20 has a protruding shape, and the thickness S from the outer wall surface of the fitting portion 31 of the shell rear portion 30 to the groove wall of the recessed groove is 3 mm or less. In this embodiment, the thickness S is 1.5 mm.

図４に示すように、殻体前部２０は底面中央の部位から後へ延伸される長い底部２４を有し、殻体後部３０は底部２４の形に対応する欠け口または陥凹状溝を有することで、ゴルフクラブヘッド１０の殻体の底面の保護金属層が形成される。つまり、ゴルフクラブヘッド１０の殻体の底面の中央部位を単なる殻体前部の底部２４のみから形成するか、或いは、殻体後部３０において陥凹状溝を形成し、殻体前部の底部２４を陥凹状溝に貼り付け、上下二層の構造を形成することが可能である。 As shown in FIG. 4, the shell front portion 20 has a long bottom portion 24 extending rearward from the center of the bottom surface, and the shell rear portion 30 has a notch or a recessed groove corresponding to the shape of the bottom portion 24. Thus, the protective metal layer on the bottom surface of the shell of the golf club head 10 is formed. That is, the central portion of the bottom surface of the shell of the golf club head 10 is formed only from the bottom 24 of the front shell, or a recessed groove is formed in the rear shell 30 to form the bottom 24 of the front shell. Can be attached to the recessed groove to form a two-layer structure.

ゴルフクラブヘッド１０の殻体のネック部１１は、殻体後部３０上に設けられ、振動吸収効果を有する。
殻体前部２０と殻体後部３０との間は、エポキシ樹脂などの接着剤により固定される。
本実施例によるゴルフクラブヘッド１０の殻体は、ネック部１１が殻体後部３０に設けられるため、打球の際に受ける強大な衝撃力は殻体前部２０に殻体後部３０を押し付けさせる。また、両者の間は突出部２３と陥凹状溝３１により嵌合されるため、単にエポキシ樹脂により接合するのみならば、破裂または分離などの心配がなくなる。 The neck portion 11 of the shell of the golf club head 10 is provided on the shell rear portion 30 and has a vibration absorbing effect.
A space between the shell front portion 20 and the shell rear portion 30 is fixed by an adhesive such as an epoxy resin.
In the shell of the golf club head 10 according to the present embodiment, the neck portion 11 is provided on the shell rear portion 30, so that a strong impact force received at the time of hitting hits the shell front portion 20 against the shell rear portion 30. Moreover, since both are fitted by the protrusion part 23 and the recessed groove | channel 31, if it only joins by an epoxy resin, there will be no worry of an explosion or isolation | separation.

本実施例は、殻体前部２０の材質がチタン合金またはステンレスなどの弾性のある金属に限定される。また、垣部の距離Ｗは８ｍｍ以上に設定され、特に、１０ｍｍであれば好ましい。厚さＤは２ｍｍ以下に設定され、特に、１．２ｍｍから１．５ｍｍであれば好ましい。これにより、垣部２２は、撓曲性のある弾力性を有することが可能である。従って、フェイス２１が強大な打球応力を受けるのに伴い、垣部２２は撓曲変形するため、嵌合部２３が受ける衝撃応力と変形の具合が低減し、殻体後部３０の嵌合部が受ける応力が小さくなる。従って、殻体後部３０の嵌合部の壁の厚さＳを適切な厚さに薄くし、重さを減少させることが可能なだけでなく、殻体後部３０がゴルフクラブヘッド１０の殻体の頂部１３に重量と厚みをかけてしまうことがない。 In the present embodiment, the material of the shell front portion 20 is limited to an elastic metal such as a titanium alloy or stainless steel. Moreover, the distance W of the fence is set to 8 mm or more, and particularly preferably 10 mm. The thickness D is set to 2 mm or less, and 1.2 mm to 1.5 mm is particularly preferable. Thereby, the fence part 22 can have a flexible elasticity. Accordingly, as the face 21 is subjected to a great ball hitting stress, the fence 22 is flexibly deformed, so that the impact stress received by the fitting portion 23 and the degree of deformation are reduced, and the fitting portion of the shell rear portion 30 is reduced. Less stress is received. Therefore, not only can the thickness S of the wall of the fitting portion of the shell rear portion 30 be reduced to an appropriate thickness and the weight can be reduced, but also the shell rear portion 30 is the shell of the golf club head 10. The top 13 is not subjected to weight and thickness.

図５に示すのは、本発明の第二実施例によるゴルフクラブヘッドの殻体４０の断面図である。図中から見た殻体後部５０は頂部ユニット６０と底部ユニット７０から構成され、そのうち、頂部ユニット６０はマグネシウムまたはアルミニウム合金などの振動吸収効果がある軽質金属から構成され、底部ユニット７０はステンレス、チタン、タングステンまたはニッケルなどの比較的重い材料から構成されるため、耐磨耗とおもりの効果がある。ゴルフクラブヘッドのネック部と頂部ユニットは、一体成型である。 FIG. 5 is a cross-sectional view of a golf club head shell 40 according to a second embodiment of the present invention. The shell rear portion 50 viewed from the figure is composed of a top unit 60 and a bottom unit 70, of which the top unit 60 is composed of a light metal having a vibration absorbing effect such as magnesium or aluminum alloy, and the bottom unit 70 is made of stainless steel, Since it is made of a relatively heavy material such as titanium, tungsten, or nickel, it has an effect of wear resistance and weight. The neck and top unit of the golf club head are integrally molded.

本発明の第一実施例によるゴルフクラブヘッドを示す斜視図である。1 is a perspective view showing a golf club head according to a first embodiment of the present invention. 図１を２−２線で切断した断面図である。It is sectional drawing which cut | disconnected FIG. 1 by the 2-2 line. 図２中の丸を付けた部分の拡大図である。FIG. 3 is an enlarged view of a circled portion in FIG. 2. 本発明の第一実施例によるゴルフクラブヘッドを示す底面図である。1 is a bottom view showing a golf club head according to a first embodiment of the present invention. 本発明の第二実施例によるゴルフクラブヘッドを示す断面図である。It is sectional drawing which shows the golf club head by the 2nd Example of this invention.

Explanation of symbols

１０：ゴルフクラブヘッド、１１：ネック部、１３：頂部、２０：殻体前部、２１：フェイス、２２：垣部、２３：嵌合部−突出部、２４：底部、３０：殻体後部、３１：嵌合部−陥凹状溝、４０：ゴルフクラブヘッドの殻体、５０：殻体後部、６０：頂部ユニット、７０：底部ユニット 10: Golf club head, 11: Neck portion, 13: Top portion, 20: Front portion of shell, 21: Face, 22: Hedge portion, 23: Fitting portion-protruding portion, 24: Bottom portion, 30: Rear portion of shell body, 31: Fitting portion-recessed groove, 40: shell of golf club head, 50: rear portion of shell, 60: top unit, 70: bottom unit

Claims

A shell front part and a shell rear part joined together to form a shell body,
The front part of the shell is made of a highly elastic metal made of titanium alloy, maraging steel, or stainless steel, has a face, and has an annular fence extending rearward around the face. Has a cup shape, the fence part has a fitting part at the outer end, the distance from the face to the outer end of the fence part is 8 mm or more, and the thickness of the fence part is 2 mm or less,
The rear part of the shell is made of a light metal with a relatively low specific gravity made of magnesium or aluminum alloy, and the whole has a deep cup shape and has a fitting part that fits into the fitting part of the front part of the shell at the open end. Golf club head characterized by

The golf club head according to claim 1, wherein a distance between the fence portions is 10 mm or more.

The fitting part at the front part of the shell has a protruding shape, the fitting part at the rear part of the shell is a recessed groove, and the thickness from the outer wall surface of the fitting part at the rear part of the shell to the groove wall of the recessed groove is The golf club head according to claim 1, wherein the golf club head is 3 mm or less.

The shell front portion has a long bottom portion extending backward from a central portion of the bottom surface, and the shell rear portion has a notch or a recessed groove corresponding to the shape of the bottom portion. Golf club head.

The rear part of the shell has a top unit and a bottom unit, the top unit is made of a light metal having a vibration absorbing effect made of magnesium or an aluminum alloy, and the bottom unit is made of relatively stainless steel, titanium alloy, tungsten or nickel. The golf club head of claim 1, wherein the golf club head is constructed of a heavy material and the neck of the golf club head is provided on the top unit.