Golf club head

Abstract

To enhance face repulsion performance while keeping joint strength between a face member and a head body.SOLUTION: A golf club head 1 comprises a face 2 for hitting a ball, including a face center FC, and includes a head body 100, and a face member 200. The head body 100 comprises a face support part 110 for fixing the face member 200, on the side of the head front. The face member 200 includes a front plate part 201, a first folded part 202 extending to the head rear from the front plate part 201, and a second folded part 203 extending to the side of the face center FC from the first folded part 202. A front surface 201a of the front plate part 201 forms at least a portion of the face 2. A rear surface 203d of the second folded part 203 is fixed to the face support part 110 of the head body.SELECTED DRAWING: Figure 4

Description

Technical Field

[0004] , , , , , , ,

[0006] , , , ,

[0005] , , , , , ,

[0001] The present invention relates to a golf club head.

Background Art

[0002] Patent Document 1 below describes an iron-type golf club head formed by joining a face member and a face receiver. The face member and the face receiver are made of different metal materials.

[0003] The face member includes an outer peripheral portion having a large thickness and a central portion surrounded by the outer peripheral portion and having a smaller thickness than the outer peripheral portion. The face receiver has a face attachment portion on the front side to which the face member is attached. The face attachment portion has a substantially step-shaped cross section including an inward-facing surface facing the center side of the head and a forward-facing surface facing the face side. The outer peripheral surface of the face member is arranged to face the inward-facing surface, and the back surface of the face member is arranged to face the forward-facing surface.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the golf club head described in Patent Document 1 above, the deflection of the outer peripheral portion of the face member during ball striking is inhibited, and there is room for further improvement in face repulsion.

[0006] The present invention has been devised in view of the above problems, and the main object is to provide a golf club head that can improve face repulsion while maintaining the bonding strength between the face member and the head body. [Means for solving the problem]

[0007] The present invention relates to a golf club head having a face for striking a ball, including a face center, comprising a head body and a face member, wherein the head body is provided with a face support portion on the front side of the head for fixing the face member, the face member comprises a front plate portion, a first return portion extending from the front plate portion toward the rear of the head, and a second return portion extending from the first return portion toward the face center, the front surface of the front plate portion forming at least a part of the face, and the rear surface of the second return portion being fixed to the face support portion of the head body.

[0008] In another aspect of the present invention, the outer circumferential surface of the first return portion of the face member does not need to be fixed to the head body.

[0009] In another aspect of the present invention, the first return portion may have a thickness of 0.5 to 4.0 mm.

[0010] In another aspect of the present invention, the first return portion may have a thickness of 2.0 mm or less.

[0011] In another aspect of the present invention, the second return portion may protrude further toward the center of the face than the face support portion.

[0012] In another aspect of the present invention, the head body may be provided with a peripheral weight portion that protrudes toward the center of the face at a distance from the second return portion toward the rear of the head.

[0013] In another aspect of the present invention, the peripheral weight portion may protrude more toward the center of the face than the second return portion.

[0014] In another aspect of the present invention, the first return portion and the second return portion may be provided on at least one of the upper portion, lower portion, toe side portion, and heel side portion of the face member.

[0015] In another aspect of the present invention, a protrusion protruding rearward of the head is provided on the rear surface of the second return portion, and a recess for fitting the protrusion may be formed in the face support portion.

[0016] In another aspect of the present invention, the face member may be made of titanium or a titanium alloy, and the head body may be made of stainless steel.

[0017] In another aspect of the present invention, the face member and the head body may be joined by brazing.

[0018] In another aspect of the present invention, the head may be an iron-type golf club head.

Advantages of the Invention

[0019] By adopting the above configuration, the golf club head of the present invention can improve the face repulsion while maintaining the joining strength between the face member and the head body.

Brief Description of the Drawings

[0020] [Figure 1] It is a front view of the golf club head of the present embodiment. [Figure 2] It is a side view of the golf club head of the present embodiment as viewed from the toe side. [Figure 3] It is a perspective view of the golf club head of the present embodiment as viewed from the front side. [Figure 4] It is an exploded perspective view of the golf club head of the present embodiment. [Figure 5] It is a perspective view of the face member as viewed from the rear surface side. [Figure 6] It is a sectional view taken along line IV-IV of FIG. 1. [Figure 7]It is an enlarged view of the main part of FIG. 6. [Figure 8] It is an exploded perspective view of a golf club head showing another embodiment of the present invention. [Figure 9] It is an exploded perspective view of a golf club head showing still another embodiment of the present invention.

Mode for Carrying Out the Invention

[0021] Hereinafter, an embodiment of the present invention will be described based on the drawings. The representative embodiments disclosed below are not intended to be limiting in any way. Further, the embodiments of the present invention can be used alone or in various combinations. Further, throughout this specification, the same or common elements are denoted by the same reference numerals, and redundant descriptions are omitted.

[0022] FIGS. 1 to 3 are a front view, a side view seen from the toe side, and a perspective view of a golf club head (hereinafter sometimes simply referred to as “head”) 1 of the present embodiment, respectively. As shown in FIGS. 1 to 3, the head 1 of the present embodiment is preferably implemented as, for example, an iron-type golf club head. In other forms, the head 1 may be configured as a wood type, a putter type, or a utility type.

[0023] The head 1 includes, for example, a face 2, a top 3, a sole 4, a toe 5, a heel 6, and a hosel 7. Also, in FIGS. 1 to 3, the head 1 is in a reference state.

[0024] [Reference State] In this specification, the “reference state” of the head 1 is the state in which the head 1 is placed on the horizontal plane HP, with the scorelines 8 formed on the face 2 being parallel to the horizontal plane HP. In this reference state, the central axis CL (axis of the club shaft) of the shaft insertion hole 7a of the hosel 7 of the head 1 is located within the reference vertical plane VP. The reference vertical plane VP is a plane perpendicular to the horizontal plane HP. In this reference state, the scorelines 8 are parallel to the horizontal plane HP and parallel to the reference vertical plane VP. Unless otherwise specified, the head 1 is assumed to be in the reference state.

[0025] [Definition of each direction] The front-to-back direction of head 1 is the direction perpendicular to the reference vertical plane VP. In this case, the front side of head 1 refers to the side of face 2 that strikes the ball, and the rear side of head 1 refers to the opposite side. The up-and-down direction of head 1 is the direction perpendicular to the horizontal plane HP, and the "upper side" and "lower side" of head 1 refer to the "upper side" and "lower side" in the vertical direction, respectively. The toe-heel direction of head 1 is parallel to the horizontal plane HP and perpendicular to the front-to-back direction of head 1.

[0026] [Basic structure of the head] Face 2 is the surface for striking the ball. In the case of the iron-type head of this embodiment, Face 2 is essentially a flat surface. Face 2 is provided with multiple scorelines 8 to increase friction with the ball. The scorelines 8 are grooves formed on Face 2 that extend in the toe-heel direction.

[0027] Face 2 includes the face center FC. For example, in the case of the iron-type head 1 of this embodiment, the face center FC is defined as the geometric center (area centroid) of face 2. In the case of a wood-type head, the face center FC is defined as the midpoint between the face length in the vertical direction and the face length in the horizontal direction.

[0028] The top 3 extends from the upper edge of the face 2 to the rear of the head 1, for example, to form the top surface of the head 1. The top 3 is sometimes called the crown or upper section.

[0029] The sole 4 extends from the lower edge of the face 2 to the rear of the head 1, forming the underside of the head 1. The sole 4 is sometimes referred to as the lower part.

[0030] Toe 5 is the end portion of head 1 in the toe-heel direction, away from the hosel 7, and smoothly connects the top 3 and the sole 4. Heel 6 is the end portion of head 1 in the toe-heel direction, opposite to toe 5, to which the hosel 7 is connected.

[0031] The hosel 7 is, for example, cylindrical and has a shaft insertion hole 7a for receiving a club shaft (not shown). The central axis CL of the shaft insertion hole 7a essentially coincides with the axial centerline of the club shaft (not shown) when the club shaft (not shown) is fixed in place.

[0032] Figure 4 is an exploded perspective view of the head 1 of this embodiment. As shown in Figures 1 to 4, the head 1 of this embodiment includes, for example, a head body 100 and a face member 200. The face member 200 is positioned on the front side of the head body 100 and constitutes a part of the face 2.

[0033] [Head body] In a preferred embodiment, the head body 100 is formed of a different metal material than the face member 200. For the head body 100, stainless steel is preferred, for example, considering the provision of appropriate weight, strength, corrosion resistance, castability, etc.

[0034] As shown in Figure 4, the head body 100 of this embodiment has, for example, a recess O on its front side that is recessed towards the rear of the head. The recess O in this embodiment is an opening that penetrates the head body 100 in the front-rear direction. In other embodiments, the recess O may be a recess that is closed on the rear side of the head.

[0035] In this embodiment, the head body 100 has the rear portions of the top 3, toe 5, and sole 4 formed around the recess O. The head body 100 also integrally includes the hosel 7 via the heel 6. It is desirable that the head body 100, as described above, is integrally formed by, for example, casting.

[0036] Furthermore, the head body 100 is provided with a face support portion 101 on the front side of the head for fixing the face member 200. The face support portion 101 is formed along the inner periphery of the recess O. In this embodiment, the face support portion 101 includes, for example, a support portion 103 on the top side, a support portion 104 on the sole side, and a support portion 105 on the toe side. Each of the support portions 103, 104, and 105 includes, for example, a support surface 101a that forms a plane extending substantially parallel to the face 2.

[0037] [Face component] Figure 5 is a perspective view of the face member 200 from the rear. Figure 6 is a cross-sectional view taken along line VI-VI in Figure 1. Figure 7 is an enlarged view of the main part of the sole side of Figure 6. For ease of understanding, the face 2 is depicted as vertical in Figure 6. As shown in Figures 5 to 7, the face member 200 includes a front plate portion 201, a first return portion 202 extending from the front plate portion 201 toward the rear of the head, and a second return portion 203 extending from the first return portion 202 toward the face center FC (shown in Figure 1).

[0038] As shown in Figures 1 and 4, the front plate portion 201 of this embodiment forms the area from the top 3 to the sole 4 in the vertical direction of the face 2. Furthermore, in the toe-heel direction of the face 2, the front plate portion 201 forms the area from the toe 5, past the face center FC towards the heel 6, to the position in front of the hosel 7. Therefore, the front plate portion 201 of this embodiment constitutes the front portion of the top 3, toe 5, and sole 4, respectively.

[0039] The front plate portion 201 includes a front surface 201a and a rear surface 201b. The front surface 201a constitutes at least a portion of the face 2. In a preferred embodiment, the front surface 201a of the front plate portion 201 forms the main part of the face 2, for example, forming 40% or more, preferably 50% or more, of the area of ​​the face 2. In a particularly preferred embodiment, as shown in Figure 1, the front surface 201a of the front plate portion 201 includes the face center FC and forms the entire intended hitting area on which the scorelines 8 are formed.

[0040] As shown in Figures 4 to 6, the first return portion 202 extends, for example, from the outer peripheral edge 201c of the front plate portion 201 to the rear of the head. In this embodiment, the first return portion 202 includes, for example, a first return portion 202a on the top side, a first return portion 202b on the toe side (Figure 4), and a first return portion 202c on the sole side. In a preferred embodiment, each of these first return portions 202a, 202b, and 202c is continuous without interruption.

[0041] In this embodiment, the first return portion 202 is not provided on the heel-side edge of the front plate portion 201. In other embodiments, the first return portion 202 may also be provided on the heel-side edge of the face member 200.

[0042] The second return portion 203 extends from the first return portion 202 toward the face center FC. As shown in Figure 6, the second return portion 203 in this embodiment is located a distance L from the rear surface 201b of the front plate portion 201 toward the rear of the head. This length L is defined as the length of the first return portion 202 in the front-to-back direction of the head. Furthermore, as shown in Figure 5, the second return portion 203 in this embodiment includes, for example, a second return portion 203a on the top side, a second return portion 203b on the toe side, and a second return portion 203c on the sole side.

[0043] In a preferred embodiment, the second return portions 203a, 203b, and 203c are continuous without interruption. In other embodiments, the second return portions 203a, 203b, and 203c may be spaced apart from each other.

[0044] For the face member 200, a metal material with high specific strength is preferable, such as titanium or a titanium alloy.

[0045] [Securing of the face component to the head body] As shown in Figures 6 and 7, in this embodiment, the rear surface 203d of the second return portion 203 of the head 1 is fixed to the face support portion 101 of the head body 100.

[0046] Generally, to increase the bonding strength between the face member 200 and the head body 100, it is important to increase the bonding area between the two. To achieve this, as shown in Figure 6, the width W1 of the face support portion 101 and the width W2 of the second return portion 203 tend to increase, but such improvements do not affect the rigidity of the first return portion 202 of the face member 200. In other words, the head 1 of this embodiment allows for a thinner first return portion 202 while increasing the bonding strength between the face member 200 and the head body 100. As a result, a large deflection is obtained in the front plate portion 201 when hitting the ball, and consequently, the face rebound performance can be improved. The width W1 of the face support portion 101 is measured in a direction perpendicular to the outer circumferential surface of the head body 100. Similarly, the width W2 of the second return portion 203 is measured in a direction perpendicular to the outer circumferential surface of the face member 200.

[0047] As shown in Figure 6, in this embodiment, the head 1 is configured such that, in a preferred configuration, the outer peripheral surface 100E around the face 2 of the head body 100 and the outer peripheral surface 200E of the face member 200 are flush and continuous, forming the outer surface of the head 1. In a preferred configuration, the outer peripheral surface of the first return portion 202 of the face member 200 (outer peripheral surface 200E of the face member 200) is not fixed to the head body 100. In this configuration, since the outer peripheral portion of the face member 200 is not constrained by the head body 100, the face member 200 becomes more flexible when hitting the ball, and consequently, the face rebound performance is improved.

[0048] [Thickness t1 of the first return portion] In order to further improve face rebound performance by thinning the first return portion 202, as shown in Figure 7, the thickness (minimum thickness) t1 of the first return portion 202 is set to, for example, 4.0 mm or less, preferably 3.0 mm or less, and more preferably 2.0 mm or less. On the other hand, if the thickness t1 of the first return portion 202 becomes excessively small, the durability of the face member 200 may be impaired, so the thickness t1 is set to, for example, 0.5 mm or more, preferably 1.0 mm or more, and more preferably 1.3 mm or more. In this embodiment, the thickness t1 of the first return portion 202 is set to 1.4 mm.

[0049] [Length L of the first return portion] Making the first return portion 202 longer promotes the deflection of the first return portion 202 when the ball is struck. Therefore, in order to further enhance the face rebound performance, as shown in Figures 6 and 7, the length L of the first return portion 202 in the direction perpendicular to the face 2 is set to 0.5 mm or more, preferably 1.0 mm or more, and more preferably 1.5 mm or more. On the other hand, if the length L of the first return portion 202 is excessively large, the durability of the face member 200 may be impaired, so the length L is set to, for example, 4.0 mm or less, preferably 3.5 mm or less, and more preferably 3.0 mm or less. In this embodiment, the length L of the first return portion 202 is set to 1.7 mm.

[0050] [Thickness t2 of the second return portion] To further enhance face rebound, as shown in Figure 6, the thickness (minimum thickness) t2 of the second return portion 203 in the direction perpendicular to the face 2 is, for example, 2.5 mm or less, preferably 2.3 mm or less, and more preferably 2.0 mm or less. On the other hand, if the thickness t2 of the second return portion 203 becomes excessively small, the durability of the face member 200 may be impaired, so the thickness t2 is, for example, 0.5 mm or more, preferably 1.0 mm or more, and more preferably 1.3 mm or more. In this embodiment, the thickness t2 of the second return portion 203 is 1.5 mm.

[0051] [Thickness of the front panel: t3] Reducing the thickness t2 of the front plate portion 201 promotes the deflection of the front plate portion 201 when the ball is struck. Therefore, in order to further enhance the face rebound performance, the thickness (minimum thickness) t3 of the front plate portion 201 is set to, for example, 3.5 mm or less, preferably 3.3 mm or less, and more preferably 3.0 mm or less. On the other hand, if the thickness t3 of the front plate portion 201 becomes excessively small, the durability of the face member 200 may be impaired, so the thickness t3 is set to, for example, 1.7 mm or more, preferably 2.0 mm or more, and more preferably 2.2 mm or more. In this embodiment, the thickness t3 of the front plate portion 201 is set to 2.4 mm.

[0052] In this embodiment, the head body 100 is made of stainless steel, and the face member 200 is made of titanium alloy. With such a combination of metal materials, it is difficult to obtain the practical joint strength required for the head by welding. In view of this, in this embodiment, the head 1 is joined by brazing the head body 100 and the face member 200. Brazing joins the two by, for example, interposing a brazing material between the head body 100 and the face member 200 and melting and solidifying it.

[0053] As shown in Figure 7, the second return portion 203 may protrude further toward the face center FC than the face support portion 101. In this configuration, when the brazing material interposed between the head body 100 and the face member 200 becomes fluid, the flow of the brazing material between the front plate portion 201 of the face member 200 and the second return portion 203 is suppressed. Therefore, this configuration has the advantage of providing a head 1 with an excellent appearance when finished.

[0054] In a particularly preferred embodiment, the head body 100 is preferably provided with a peripheral weight portion 106 that protrudes toward the face center FC at a distance from the second return portion 203 toward the rear of the head. In this embodiment, a large amount of weight is distributed to the periphery of the head 1, and the moment of inertia of the head 1 is increased.

[0055] Furthermore, since a groove-shaped recess G is formed between the second return portion 203 and the peripheral weight portion 106, if the brazing material interposed between the head body 100 and the face member 200 becomes fluid, it can be retained within this recess G. Therefore, in this embodiment, the flow of brazing material between the front plate portion 201 of the face member 200 and the second return portion 203 can be more reliably suppressed. Thus, according to this embodiment, a head 1 with an even better finished appearance can be provided. To further enhance this effect, the peripheral weight portion 106 may protrude further toward the face center FC than the second return portion 203.

[0056] Furthermore, in order to increase the bonding strength between the head body 100 and the face member 200, for example, a projection 205 protruding to the rear of the head may be provided on the rear surface 203d of the second return portion 203. Also, a recess 110 for fitting the projection 205 may be formed in the face support portion 101. In this embodiment, the bonding area between the head body 100 and the face member 200 can be increased, thereby increasing the bonding strength between the two. In addition, these projections 205 and recesses 110 help to accurately position the two members when joining the head body 100 and the face member 200.

[0057] In this embodiment, the projection 205 is rib-shaped and extends continuously along the outer periphery of the face member 200. In other embodiments, the projection 205 may consist of a plurality of projections intermittently provided along the outer periphery of the face member 200. Similarly, the recess 110 provided in the face support portion 101 of the head body 100 is groove-shaped and extends continuously, corresponding to the projection 205. In other embodiments, the recess 110 may consist of a plurality of intermittently provided recesses. Note that recesses may be provided on the side of the second return portion 203 of the face member 200, and projections may be provided on the side of the face support portion 101 (not shown).

[0058] [Other embodiments] In the above embodiment, the first return portion 202 and the second return portion 203 of the face member 200 are shown in a preferred configuration in which they are provided on the upper (top 3 side), lower (sole 4 side), and toe side of the face member 200. However, the present invention is not limited to this configuration and can be implemented in various modified forms. For example, the first return portion 202 and the second return portion 203 may be provided on at least one of the upper (top 3), lower (sole 4), toe side (toe 5 side), and heel side (heel 6 side) of the face member 200. Also, if the first return portion 202 and the second return portion 203 are provided on at least one of the above parts of the face member 200 (for example, the lower part), the first return portion 202 and the second return portion 203 do not need to be provided on the entire lower part of the face member 200, but only on at least a part of the lower part. Several other embodiments are described below.

[0059] Figure 8 shows an exploded perspective view of the head 1 as another embodiment of the present invention. As shown in Figure 8, the face member 200 includes an embodiment in which it does not extend to the toe 5. In this embodiment, the front plate portion 201 of the face member 200 constitutes the central portion of the face 2 in the toe-heel direction and is configured to have a shorter toe-heel length than the face member 200 shown in Figure 4.

[0060] Furthermore, in the face member 200 of this embodiment, the first return portion 202 and the second return portion 203 are provided on the upper (top 3) and lower (sole 4) parts of the face member 200, but not on the toe-side edge and heel-side edge. Even in this embodiment, the face rebound performance can be improved over a wide range in the vertical direction of the face 2.

[0061] Figure 9 shows an exploded perspective view of the head 1 as another embodiment of the present invention. The head 1 shown in Figure 9 differs from the embodiment in Figure 8 in that, in the face member 200, the first return portion 202 and the second return portion 203 are provided only on the lower part (sole 4) of the face member 200, and are not provided on the upper part, toe, and heel edges. In this embodiment, the area of ​​high face rebound can be extended to a lower region of the face 2. Since iron-type golf club heads are often used to strike balls placed directly on the ground, increasing the rebound of the sole 4 side of the face 2 is of great significance.

[0062] Although not shown in the figures, the present invention includes configurations in which the first return portion 202 and the second return portion 203 of the face member 200 are provided only on the edge extending vertically on the toe side of the face member 200, or on the edge extending vertically on the heel side.

[0063] Although embodiments of the present invention have been described in detail above, the present invention is not limited to the specific disclosures described above, and can be implemented with various modifications within the scope of the technical idea described in the claims. [Examples]

[0064] Iron-type golf club heads with the basic structure shown in Figures 1 to 6 were prototyped based on the specifications in Table 1, and their face rebound properties and durability (bonding strength between the face member and the head body) were tested. The face member was made of titanium alloy (6-4 titanium), and the head body was made of stainless steel (SUS630). A comparative example was the configuration shown in Figure 4 of Patent Document 1. In this head, the outer circumferential surface of the face member is also directed to the head body. Details of each part of head 1 are shown in Table 1. The test method is as follows.

[0065] [Face rebound test] The Coefficient of Restitution (COR) was measured at the center of the face and at 5mm points above, below, left, and right of the center of the face (a total of 5 locations). COR stands for Coefficient of Restitution and was measured according to the "Interim Procedure for Measuring the Coefficient of Restitution of an Iron Clubhead Relative to a Baseline Plate Revision 1.3 January 1, 2006" stipulated by the USGA (United States Golf Association). The evaluation is the average value of the COR at the above 5 locations, and is an index with the value of Example 1 set to 100. A higher value indicates better face rebound.

[0066] [Durability Test] Each test head was fitted with an identical FRP club shaft to create a prototype iron-type golf club (38 inches in total length). These clubs were then mounted on a swing robot, adjusted to a head speed of 41 m / s, and used to strike golf balls. The number of shots until delamination occurred at the joint between the head body and the face member was measured. This delamination was observed visually every 100 shots. The results are expressed as an index with the number of shots in Example 1 set to 100, and a higher number indicates superior durability.

[0067] [Table 1]

[0068] The test results confirmed that the head of the embodiment can improve face rebound while maintaining the bonding strength between the face member and the head body. [Explanation of Symbols]

[0069] 1 head 2 Faces 100 Head Body 101 Face support section 106 Peripheral weight section 110 recess 200 Face members 201 Front plate part 201a Front of the front panel 201b Rear view of the front panel 202 First Return Section 203 Second Return Section 203d Rear view of the second return section 205 Protrusion FC Face Center

Claims

1. An iron-type golf club head having a face for striking the ball, including the center of the face, Including the head body and the face component, The head body is provided with a face support portion on the front side of the head for fixing the face member, The face member includes a front plate portion, a first return portion extending from the front plate portion toward the rear of the head, and a second return portion extending from the first return portion toward the center of the face. The front surface of the front plate portion forms at least a part of the face, In the face member, the set of the first return portion and the second return portion is provided only at the lower part of the face member. The rear surface of the second return portion is fixed to the face support portion of the head body, The upper part of the face member is provided with the first return portion, and the second return portion is not provided. The head body is provided with a peripheral weight portion that protrudes toward the center of the face at a distance from the second return portion toward the rear of the head. Golf club head.

2. The golf club head according to claim 1, wherein the peripheral weight portion protrudes toward the center of the face more than the second return portion.

3. The golf club head according to claim 1 or 2, wherein the outer peripheral surface of the first return portion of the face member is not fixed to the head body.

4. The golf club head according to any one of claims 1 to 3, wherein the first return portion provided at the lower part of the face member has a thickness of 0.5 to 4.0 mm.

5. The golf club head according to claim 4, wherein the first return portion provided on the lower part of the face member has a thickness of 2.0 mm or less.

6. The golf club head according to any one of claims 1 to 5, wherein the second return portion protrudes toward the center of the face more than the face support portion.

7. The rear surface of the second return portion is provided with a projection that protrudes to the rear of the head, The golf club head according to any one of claims 1 to 6, wherein the face support portion has a recess formed therein for fitting the projection.

8. The golf club head according to any one of claims 1 to 7, wherein the face member is titanium or a titanium alloy, and the head body is stainless steel.

9. The golf club head according to any one of claims 1 to 8, wherein the face member and the head body are joined by brazing.

Images