JP2702106B2 - Golf club - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a Ru <br/> relates to a Gorufukura drive.

[0002]

2. Description of the Related Art Conventionally, this kind of steel is forged with iron to form a sole, a face having a predetermined angle with respect to the sole, and a shaft mounting portion. Was to be produced. In such a conventional head, the sole side at the rear of the head is projected rearward in order to enlarge the sweet area.
This is because the center of gravity of the head is located rearward, the distance between the center of gravity and the face is increased, and the sweet area caused by this is enlarged.

[0003]

In the above prior art, since the head is made of the same material, the center of gravity of the head is moved backward even if the sole side at the rear of the head is projected rearward. There was a limit to the location, and it was not possible to significantly expand the sweet area.

As one means for solving such a problem, Japanese Utility Model Laid-Open Publication No. 53-19475 discloses a method in which a large window hole is formed in a hitting surface of a head body, and the window hole is closed by a plate material provided on the hitting surface. Iron golf clubs fixed with screws or the like are known. However, in such a device, since the head body and the plate material are fixed with screws or the like, the fixing force is weak, and there is a possibility that the head body is detached at the time of a shot, and the manufacturing is not easy. Inferior.

In Japanese Utility Model Laid-Open Publication No. 52-146353, the entire face or the surface of the head is made of light metal (light metal alloy), and the socket part is made of iron (iron alloy) from the outer periphery including the sole part. A configuration in which a weight (iron (iron alloy)) is disposed around the periphery of the face portion to enlarge the sweet area, and an inverted taper is formed at the edge of the concave portion provided with the face is disclosed. However, in such a device, a face is formed by pouring a light metal such as molten aluminum, and large facilities such as melting and pouring are required.

Further, Japanese Utility Model Application Laid-Open No. 63-16065 discloses a head in which a balance weight is press-fitted on the back surface of a head main body, the side surface of the fitting portion being formed in a reverse tapered shape. However, in such a head, since the face is not elastically deformed alone at the time of hitting the ball, there is a limit to the improvement of the flight distance of the ball as compared with the aforementioned Japanese Utility Model Application Laid-Open No. 53-19475.

[0007] The present invention solves the above-mentioned problems by enlarging the sweet area and further improving the strength.
The purpose is to provide the service.

[0008]

According to the present invention, there is provided a golf club in which a face member is fitted to a front surface and a shaft is connected to a head having a shaft mounting portion on one side. the head forms a concave portion to the front to form a sole, and a head body provided with said shaft mounting portion to form a pre-SL surface to rear surface than the opening width is smaller window opening after the recess rearwardly, the than the head main body is formed by a material having a small specific gravity consists of a face member formed of a plate material provided in the concave portion, the said head main body Fe
The fitting structure with the base member is formed on the peripheral surface of the concave portion.
It consists of a peripheral surface of the small recess and the face member, and a Gorufukura blanking, characterized in that contact the rear surface of the face member to the rear surface of the recess.

[0009] The second aspect of the present invention, the a Gorufukura Bed according to claim 1, wherein the small recesses formed in the circumferential surface rear side of the recess.

According to a third aspect of the present invention, the small recess is provided in a reverse taper shape on a peripheral surface of the recess.
Is a Gorufukura blanking described.

According to a fourth aspect of the present invention, a face member is provided on the front surface.
A head provided with a shaft mounting portion in the loading to Rutotomoni one side
In a golf club having a shaft connected thereto , the head
Forms a recess on the front forming the sole, and the head body provided with said shaft mounting portion so as to form towards the surface to rear surface than the opening width is smaller window opening after the recess rearward from said head body Also comprises a face member formed of a material having a low specific gravity and made of a plate-like material pressed into the recess, and a fitting structure between the head body and the face member
Is composed of a circumferential surface of the small protuberances of the peripheral surface of the small recess and the face member of said recess, and a Gorufukura blanking, characterized in that contact the rear surface of the face member to the rear surface of the recess.

According to a fifth aspect of the present invention, the small recess is provided on a rear side of a peripheral surface of the recess, and the small projection is provided on a rear side of a peripheral surface of the face member. 4. is a Gorufukura Bed according.

According to a sixth aspect of the present invention, the small recess is provided in a reverse taper shape on a peripheral surface of the recess, and the small protrusion is provided in a reverse taper shape on a peripheral surface of the face member. a Gorufukura Bed according to claim 4.

According to a seventh aspect of the present invention, a face member is provided on the front surface.
A head provided with a shaft mounting portion in the loading to Rutotomoni one side
In a golf club having a shaft connected thereto , the head
Forms a recess on the front forming the sole, and the head body provided with said shaft mounting portion so as to form towards the surface to rear surface than the opening width is smaller window opening after the recess rearward from said head body And a face member formed of a material having a small specific gravity and made of a plate-like material inserted into the concave portion.The fitting structure between the head body and the face member has a small concave portion on the peripheral surface of the concave portion . a Gorufukura blanking characterized by comprising a small protuberance of the peripheral surface of said face member.

According to an eighth aspect of the present invention, the small recess is provided on a rear side of a peripheral surface of the recess, and the small projection is provided on a rear side of a peripheral surface of the face member. a Gorufukura blanking of claim 7.

According to a ninth aspect of the present invention, the small recess is provided in a reverse taper shape on a peripheral surface of the recess, and the small protrusion is provided in a reverse taper shape on a peripheral surface of the face member. a Gorufukura Bed according to claim 7.

[0017]

[Action] In Gorufukura Bed according to claim 1, fitted to the peripheral surface of the face member to the small recesses of the preformed recess, the central portion behind the face member freedom of the central portion of the face member to the open state Is secured.

[0018] In Gorufukura Bed according to claim 2, it can be increased in length from small recesses to face provided on the rear side of the peripheral surface.

[0019] In Gorufukura Bed according to claim 3, by which a reverse <br/> tapered small recesses, local stresses, etc. hardly occurs.

[0020] In Gorufukura Bed according to claim 4, by fitting the small projection of the face member to the small recess portion of the recess, in addition to be firmly fixed to the face member to the head body, press-fitting the face member to the recess At this time, press-fitting can be easily performed by contacting the rear surface of the face member with the rear surface of the concave portion.

[0021] In Gorufukura Bed according to claim 5, it can be increased in length from small recesses to face provided on the rear side of the peripheral surface.

[0022] In Gorufukura Bed according to claim 6, by which the opposite <br/> tapered small recesses, local stresses, etc. hardly occurs.

[0023] In Gorufukura Bed according to claim 7, by fitting the small projection of the face member to the small recess portion of the recess, in addition to be firmly fixed to the face member to the head body, the central portion behind the face member Due to the open state, the degree of freedom of the central portion of the face member is ensured.

[0024] In Gorufukura Bed according to claim 8, it can be increased in length from small recesses to face provided on the rear side of the peripheral surface.

[0025] In Gorufukura Bed according to claim 9, by which the opposite <br/> tapered small recesses, local stress, etc. is unlikely to occur.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The head main body 1 is provided with a face 2 having a predetermined angle A. Further, on one side of the head main body 1, a shaft mounting portion 4 for connecting a shaft 3 is provided. And beryllium copper alloy (specific gravity approximately 8.
The head body 1 having a sole 5 made of 2) or stainless steel (specific gravity of approximately 7.9) or the like has a recess 7 in which a thin plate-shaped face member 6 is fitted on the front side. The face member 6 is formed of a material having a small specific gravity, such as titanium, a titanium alloy (specific gravity of about 4.5), aluminum, an aluminum alloy, a magnesium alloy, and carbon fiber. All or a part of the peripheral surface 8 of the concave portion 7 is formed in an inversely tapered shape so that the rear side is widened. As a result, a small concave portion 8A is formed on the rear side of the peripheral surface 8 and the face member is formed. The peripheral surface 6 </ b> A of 6 is formed slightly larger than the peripheral surface 8. Further, on the rear surface 7A of the concave portion 7,
A window hole 9 having an opening width X smaller than that of the concave portion 7 is formed through the rear surface of the head main body 1, and a rear concave portion 10 is formed in the rear surface 7A. Alternatively, a part of the peripheral surface 10A is formed in an inversely tapered shape so that the rear side is widened. As a result, a small recess 10B is formed on the rear side of the peripheral surface 10A. The opening width X of the window hole 9 is formed smaller than the concave portion 10. The face member 6 fits into the recesses 7 and 10,
A convex portion 11 is provided on the rear surface. The convex portion 11 is formed slightly larger than the concave portion 10. When the face member 6 is fixed to the head main body 1, the face member 6 and the convex portion 11 are pressed into the concave portions 7 and 10 by pressing or the like. At this time, the peripheral surface 6 of the face member 6
A is fixed to the peripheral surface 8 and the peripheral surface 11A of the projection 11 is fixed to the peripheral surface 10A in an inversely tapered shape, and as a result, the small concave portions 8A and
The small protrusions 6B and 11B having a reverse taper shape are formed on the rear side of the peripheral surfaces 6A and 11A of the face member 6 corresponding to B, so that the head body 1 and the face member 6 can be firmly fixed. Further, the rear surfaces 6C and 11C of the face member 6 are provided with the rear surface 7A and the concave portion 10C.
Abuts on the rear surface 10C. Reference numeral 13 denotes a top of the head body 1 and 14 denotes a heel.

As described above, in the above embodiment, the concave portions 7, 10 and the window holes 9 are formed on the front surface of the head main body 1 made of beryllium copper alloy or stainless steel. By fitting the face member 6 formed of a material having a low specific gravity into the concave portion 7, the center of gravity G of the head is separated from the face 2 toward the thick sole 5 of the head main body 1 having a high specific gravity. As a result, the distance between the center of gravity G and the face 2 (the depth of the center of gravity) is increased, and an ultra-wide area head can be provided. Further, since the window hole 9 is formed in the head main body 1, the center of gravity G of the head main body 1 itself can be lowered and the center of gravity G can be provided further rearward.

Further, a face member 6 made of a plate-like metal material is pressed into the recess 7 of the head body 1 by press-fitting into the recess 7 by pressing, and the face member 6 is formed in an inverse taper shape by the pressure of the press. The head body 1 is press-fitted while being plastically deformed into the shape of the recessed portion 7 of the head body 1 so that they are fixed to each other, so that the head body 1 can be easily manufactured without requiring a large facility for pouring molten metal as in the prior art. can do. Also, no screws or the like appear on the face 2 and the appearance is good.

Further, the peripheral surface 8 and the peripheral surface 10A are formed in an inversely tapered shape so that the rear side is widened, and the face member 6 is press-fitted into the concave portion 7 by a press, so that the face member 6 is formed. Can be firmly fixed by the dovetail structure, and the possibility that the face member 6 is detached during a shot can be eliminated.

Further, the face members 6 are provided on the rear surfaces 7A and 10C.
Since the rear surfaces 6C and 11C are in contact with each other, the impact force applied at the time of a shot can be reliably received by the rear surfaces 7A and 10C via the face member 6. Further, when the face member 6 is pressed into the recesses 7 and 10 by pressing or the like and fitted, the rear surfaces of the face members 6 abut against the rear surfaces 7A and 10C of the recesses 7 and 10, so that the press-fitting and fitting are performed accurately. It can be carried out. Further, since the window hole 9 is provided at the center of the rear surface of the face member 6, the face member 6 can be elastically deformed at the time of a shot, and the flight distance of the ball can be extended.

Further, a concave portion 10 is formed in the rear surface 7A, and all or a part of the peripheral surface 10 of the concave portion 10 is formed.
A is formed in a reverse tapered shape so that the rear side is widened,
Since the face member 6 is press-fitted and fitted by a press or the like, the fixing force between the head body 1 and the face member 6 can be further improved.

The peripheral surfaces 8, 10A of the concave portions 7, 10 are formed in a reverse taper shape in advance, and the face member 6 provided with the convex portion 11 is subjected to pressing or the like so that the face member 6 is When fixed to 1, the small projections 6B and 11B can be formed due to the small recesses 8A and 10B, and can be securely fixed.

Moreover, in the above embodiment, the rear surfaces 6C and 11C of the face member 6 are in contact with the rear surfaces 7A and 10C, and the window hole 9 is formed smaller than the rear surface 10C. Rear surface 7A, 10C of concave portions 7, 10
At the time of press-fitting, the face member 6 does not act so as to be inserted into the window hole 9 and can be accurately fixed.

The face member 6 is plate-shaped and its thickness is relatively thin, and there is a restriction on the mounting of the face member 6. However, in the above embodiment, the small recesses 8A and 10B and the small recesses 8A and Small protrusions 6B, 11 formed due to 10B
Since B is provided on the rear side of the peripheral surfaces 6A, 8, 10A, and 11A, the lengths of the small recesses 8A and 10B, the small protrusions 6B and 11B, and the face 2 become as large as possible. The mounting strength of No. 6 can be increased. Further, since the small recesses 8A and 10B and the small protrusions 6B and 11B are reversely tapered, local stress does not occur at the locations, and the strength can be improved.

A second embodiment of the present invention will be described with reference to FIGS. The head main body 1 is provided with a face 2 having a predetermined angle A. Further, on one side of the head main body 1, a shaft mounting portion 4 for connecting a shaft 3 is provided. And the head body 1 having a sole 5
On the front surface side, a concave portion 7 in which a thin plate-shaped face member 6 is fitted is formed. All or a part of the peripheral surface 8 of the concave portion 7 is formed in an inversely tapered shape so that the rear side is widened. As a result, a small concave portion 8A is formed on the rear side of the peripheral surface 8. The peripheral surface 6A of the face member 6 is formed slightly larger than the peripheral surface 8. Further, a window hole 9 having an opening width X smaller than that of the concave portion 7 is formed in a rear surface 7A of the concave portion 7. The face member 6 fits into the recess 7. When the face member 6 is fixed to the head main body 1, the face member 6 is pressed into the recess 7 by pressing. At this time, since the peripheral surface 6A of the face member 6 is fitted and fixed to the peripheral surface 8 in a dovetail shape, the head body 1 and the face member 6 can be firmly fixed. As a result, an inversely tapered small projection 6B is formed on the rear side of the peripheral surface 6A of the face member 6 corresponding to the small recess 8A. Further, the rear surface 6C of the face member 6 comes into contact with the rear surface 7A of the concave portion 7. Reference numeral 13 denotes a top of the head body 1 and 14 denotes a heel.

As described above, in the above embodiment, the recess 7 is formed on the front surface of the head body 1 and the face member 6 made of a material having a lower specific gravity than the head body 1 is fitted into the recess 7. , The center of gravity G of the head is
The head body 1 having a large specific gravity is closer to the thick sole 5 side of the head body 1 and is separated from the face 2. As a result, the distance between the center of gravity G and the face 2 is increased, so that an ultra wide area head can be provided. Further, since the window hole 9 is formed in the head main body 1, the center of gravity G of the head main body 1 itself can be lowered and the center of gravity G can be provided further rearward.

The face member 6 made of a plate-like metal material is pressed into the recess 7 of the head body 1 by pressing or the like, and the face member 6 is shaped by the pressure of the press. Since the two are fixed by being press-fitted while being plastically deformed, they can be easily manufactured. Also, no screws or the like appear on the face 2 and the appearance is good.

Further, the peripheral surface 8 is formed in a reverse tapered shape so that the rear side is widened, and the face member 6 is press-fitted into the concave portion 7 by a press or the like, so that the face member 6 is Due to the structure, it can be firmly fixed, and the possibility that the face member 6 is detached during a shot can be eliminated.

The peripheral surface 8 of the recess 7 is formed in a reverse taper shape in advance, and when the face member 6 is fixed to the head main body 1 by pressing or the like, the small recess 8A is formed. Due to this, the small protrusion 6B can be formed and can be securely fixed.

Furthermore, since the rear surface 6C of the face member 6 is in contact with the rear surface 7A, the impact force applied at the time of a shot can be reliably received by the rear surface 7A via the face member 6. Further, when the face member 6 is press-fitted into the concave portion 7 by a press or the like and fitted, the rear surface 7A of the concave portion 7
Since the rear surface 7A of the face member 6 is in contact with the second member, accurate press-fitting and fitting can be performed. Further, since the window hole 9 is provided in the center of the rear surface 6C of the face member 6, elastic deformation of the face member 6 at the time of a shot can be performed freely, and the flight distance can be extended.

In the above embodiment, the rear surface 6C of the face member 6 is in contact with the rear surface 7A of the recess 7 and the opening width X of the window hole 9 is formed smaller than the rear surface 7A. Since the applied force is applied to the rear surface 7A of the concave portion 7, the face member 6 does not act to be inserted into the window hole 9 at the time of press-fitting, and can be accurately fixed.

The face member 6 is plate-shaped and its thickness is relatively thin, and there is a restriction on the mounting of the face member 6. However, in the above-described embodiment, the small recess 8A and the small recess 8A cause it. The small protrusion 6B formed by the peripheral surface 6A, 8
The length of the small recess 8A, the small protrusion 6B and the face 2 becomes as large as possible, and as a result, the mounting strength of the face 6 can be increased. further,
Since the small recesses 8A and the small projections 6B are reversely tapered, local stress does not occur at the locations, and the strength can be improved.

The present invention is not limited to the above embodiment. For example, the peripheral surface 6A and the peripheral surface 11A of the embodiment may be formed in a reverse taper in advance and fitted into the concave portions 7 and 10. Various modifications such as good are possible.

[0044]

According to the first aspect of the present invention, a face member is provided on the front surface.
Head provided with a shaft mounting portion on one side with fitting the
Oite to the golf club which was connected to the shaft to, the header
De is a head body provided with said shaft mounting portion with forming the recessed portion to the front to form a sole to form a pre-SL surface to the opening width is smaller window opening than the rear plane of the recess towards the rear,
A face member formed of a material having a lower specific gravity than the head body and made of a plate-shaped material provided in the recess; and fitting the head body to the face member
The golf club has a structure comprising a small concave portion formed on a peripheral surface of the concave portion and a peripheral surface of the face member , and wherein a rear surface of the face member abuts a rear surface of the concave portion. a Bed, work to expand the sweet area by placing the center of gravity of the head backward, and can also improve appearance with can easily be manufactured without requiring large-scale facilities for pouring the molten metal as in the prior art . Further, by fitting the peripheral surface of the face member into the small concave portion of the concave portion formed in advance, the face member can be firmly and securely fixed to the head main body. Since the peripheral surface side can be supported, the strength can be improved, and further, since the rear portion of the center portion of the face member is in an open state, the degree of freedom of the center portion of the face member is secured, and the elastic deformation at the time of a shot can be increased.

[0045] The invention according to claim 2, wherein a Gorufukura Bed according to claim 1, characterized in that the small recesses formed in the circumferential surface rear side of the recess, a small recess formed in the rear side of the peripheral surface Since the length from the face to the face can be increased, the action of preventing the face member from coming off can be enhanced.

According to a third aspect of the present invention, the small recess is provided in a reverse taper shape on a peripheral surface of the recess.
A Gorufukura Bed according, by the small recesses and inversely tapered, hardly occurs such local stress, it is possible to improve the strength.

According to a fourth aspect of the present invention, a face member is provided on the front surface.
A head provided with a shaft mounting portion in the loading to Rutotomoni one side
In a golf club having a shaft connected thereto , the head
Forms a recess on the front forming the sole, and the head body provided with said shaft mounting portion so as to form towards the surface to rear surface than the opening width is smaller window opening after the recess rearward from said head body Also comprises a face member formed of a material having a low specific gravity and made of a plate-like material pressed into the recess, and a fitting structure between the head body and the face member
It is composed of a small protuberance of the peripheral surface of the face member and the small recesses of the peripheral surface of the recess, and a Gorufukura blanking, characterized in that contact the rear surface to the rear surface of the recess of the face member, the head The sweet area is enlarged by arranging the center of gravity at the rear, and it can be easily manufactured without requiring a large facility for pouring molten metal as in the prior art, and has an excellent appearance. Furthermore, by fitting the small protrusion of the face member into the small recess of the recess, the face member can be firmly fixed to the head body, and the peripheral surface of the rear surface of the face member is supported by the peripheral surface of the rear surface of the recess. Since it is possible to improve the strength, the center portion of the face member is open at the rear and the degree of freedom of the center portion of the face member is secured, and the elastic deformation at the time of a shot can be increased. In addition, when the face member is press-fitted into the concave portion, the press-fitting can be easily performed by contacting the rear surface of the face member with the rear surface of the concave portion.

According to a fifth aspect of the present invention, the small recess is provided on the rear side of the peripheral surface of the recess, and the small projection is provided on the rear side of the peripheral surface of the face member. a Gorufukura blanking of claim 4, wherein, the small recesses formed in the rear side of the peripheral surface, it is possible to increase the length of the small projections to face, it is possible to enhance the retaining action of the face member.

According to a sixth aspect of the present invention, the small recess is provided on the peripheral surface of the recess in a reverse taper shape, and the small protrusion is provided on the peripheral surface of the face member in a reverse taper shape. to a Gorufukura Bed according to claim 4, small recesses, by which a reverse tapered shape of small protuberances, is less likely to occur, such as local stress, it is possible to improve the strength.

According to a seventh aspect of the present invention, a face member is provided on the front surface.
A head provided with a shaft mounting portion in the loading to Rutotomoni one side
In a golf club having a shaft connected thereto , the head
Forms a recess on the front forming the sole, and the head body provided with said shaft mounting portion so as to form towards the surface to rear surface than the opening width is smaller window opening after the recess rearward from said head body And a face member formed of a material having a small specific gravity and made of a plate-like material inserted into the concave portion.The fitting structure between the head body and the face member has a small concave portion on the peripheral surface of the concave portion . a Gorufukura blanking characterized by comprising a small protuberance of the peripheral surface of the face member,
The center of gravity of the head is arranged at the rear to enlarge the sweet area, and the head can be easily manufactured without requiring a large facility for pouring molten metal as in the prior art, and the appearance can be improved. Furthermore, by fitting the small protrusion of the face member into the small recess of the recess, the face member can be firmly fixed to the head body, and the peripheral surface of the rear surface of the face member is supported by the peripheral surface of the rear surface of the recess. As a result, the strength can be improved and the appearance is excellent. Moreover, since the rear part of the center of the face member is open, the degree of freedom of the center of the face member is ensured, and the elastic deformation at the time of a shot can be increased.

The invention according to claim 8 is characterized in that the small recess is provided on the rear side of the peripheral surface of the recess, and the small projection is provided on the rear side of the peripheral surface of the face member. a Gorufukura blanking of claim 7, wherein, the small recesses formed in the rear side of the peripheral surface, it is possible to increase the length of the small projections to face, it is possible to enhance the retaining action of the face member.

According to a ninth aspect of the present invention, the small recess is provided in a reverse taper shape on a peripheral surface of the recess, and the small protrusion is provided in a reverse taper shape on a peripheral surface of the face member. to a Gorufukura Bed according to claim 7, small recesses, by which a reverse tapered shape of small protuberances, is less likely to occur, such as local stress, it is possible to improve the strength.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing the first embodiment of the present invention.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is an exploded perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Head main body 3 Shaft 4 Shaft mounting part 5 Sole 6 Face member 6A Peripheral surface 6C Rear surface 6B Small protrusion 7 Recess 7A Rear surface 8 Peripheral surface 8A Small recess 9 Window hole X Opening width

Claims (9)

(57) [Claims] A shaft is connected to a head having a face member fitted on the front surface and a shaft mounting portion provided on one side.
Was Oite the golf club, the head forms a concave portion to the front to form a sole, said shaft mounting portion so as to form in front Symbol toward the rear surface than the opening width is small window opening to the rear surface of the recess to the rear a head body provided than said head body is formed by a material having a small specific gravity consists of a face member formed of a plate material provided in the recess, the heads
The fitting structure between the main body and the face member is
Toka small recess formed on the peripheral surface peripheral surface of said face member
Rannahli and Gorufukura blanking the rear surface of the face member, characterized in that abuts against the rear surface of the recess. 2. A method according to claim 1 Gorufukura Bed according, characterized in that said small recesses are provided on the rear side of the peripheral surface of the recess. 3. The golf club according to claim 1, wherein the small concave portion is provided in a reverse tapered shape on a peripheral surface of the concave portion.
Bu. 4. Connect the shaft head provided with a shaft mounting portion face member in the loading to Rutotomoni one side to the front
In the golf club head wherein the head forms a concave portion to the front to form a sole, provided with the shaft mounting portion so as to form towards the rear face than the opening width is small window opening in the rear surface of the recess to the rear body and than said head body is formed by a material having a small specific gravity consists of a face member made of a sheet material to be press-fitted into the recess, the head
Fitted structure between the face member and the body sounds from the small protuberances of the peripheral surface of the face member and the small recesses of the peripheral surface of said recess
Ri and Gorufukura blanking, characterized in that contact the rear surface of the face member to the rear surface of the recess. 5. The golf according to claim 4, wherein the small recess is provided on a rear side of a peripheral surface of the recess, and the small projection is provided on a rear side of a peripheral surface of the face member. <br/> clubs. 6. The small recess is provided in a reverse taper shape on a peripheral surface of the recess, and the small protrusion is provided on a peripheral surface of the face member.
4. Gorufukura Bed according to, characterized in that provided in the inversely tapered. 7. Connect the shaft head provided with a shaft mounting portion face member in the loading to Rutotomoni one side to the front
In the golf club head wherein the head forms a concave portion to the front to form a sole, provided with the shaft mounting portion so as to form towards the rear face than the opening width is small window opening in the rear surface of the recess to the rear body and than said head body is formed by a material having a small specific gravity consists of a face member made of a sheet material to be inserted into said recess, said head
Gorufukura Bed fitting structure of the body and the face member, wherein this <br/> and consisting of a small protuberance of the peripheral surface of the face member and the small recesses of the peripheral surface of the recess. 8. The golf according to claim 7, wherein the small concave portion is provided on a rear side of a peripheral surface of the concave portion, and the small protrusion is provided on a rear side of a peripheral surface of the face member. <br/> clubs. 9. The small recess is provided in a reverse taper shape on a peripheral surface of the recess, and the small protrusion is provided on a peripheral surface of the face member.
7. Gorufukura Bed according to, characterized in that provided in the inversely tapered.