JP2874103B2 - Golf club head and method of manufacturing the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club head for preventing a face plate attached to a face portion from falling off, and a method of manufacturing the same.

[0002]

2. Description of the Related Art An iron club head generally has a hosel portion, a sole portion, a face portion and the like integrally formed of a metal such as soft iron or stainless steel.

Conventionally, although this type of golf club head is shaped and weighed according to each count, it is poor in elasticity because it is a lump of metal. Without elasticity, the coefficient of restitution was small, and a soft shot feeling like a wood club could not be obtained.

Therefore, in recent years, a golf club head in which a face plate formed of a fiber-reinforced resin or the like is attached to the face of a metal head body in order to obtain a soft feel at impact has been disclosed in Japanese Utility Model Laid-Open No. 60-7848. Yakai Kaisho 62
It is disclosed in, for example, JP-A-113570.

In the former golf club head, as shown in FIGS. 7 and 8, a shallow concave portion 5 having left and right portions and a lower portion is provided in a face portion 3 of a metal head main body 1, and the concave portion 5 is provided.
A plate-like face plate 7 made of a material having a lower specific gravity than the head body 1 is fixed therein with screws 9.

A golf club head disclosed in Japanese Utility Model Laid-Open Publication No. 62-113570 has a recess 15 formed in a face portion 13 of a metal head body 11 as shown in FIG.
Then, a fiber reinforced resin layer 19 is formed on the metal base 17.
The metal plate 15 is attached to the head body 9 by screwing the metal pedestal 15 into the recess 23.
It is fixed with.

[0007]

However, the conventional golf club head shown in FIGS. 7 and 9 has a structure in which the face plates 7, 21 are fixed to the recesses 5, 15 by using screws 9, 13, respectively. The work of mounting the face plates 7 and 21 was very troublesome.

On the other hand, although it is not a device related to an iron club, Japanese Utility Model Publication No. 38-1037 discloses a wood club head which can fix a face plate to a face portion without fixing screws.

[0009] As shown in FIG.
5 are provided on the face portion 27 and the face plate 31 are provided with serrated irregularities 33 and 35, respectively.
9 fitted.

[0010] However, the irregularities 33 are not
It takes time and effort for molding, it is difficult to obtain accuracy,
Further, there is a possibility that the bumps 33 and 35 may be damaged by the impact at the time of hitting the ball and the face plate 31 may fall off.

The present invention has been devised in view of the above circumstances. In manufacturing a golf club head, it is easy to attach the face plate to the face portion. It is an object of the present invention to provide a golf club head that does not fall off from the face portion and a method of manufacturing the same.

[0012]

In order to achieve the above object, a golf club head according to the present invention provides a golf club head having a face plate mounted in a recess provided in a face portion of a head body. the periphery of the face plate, to form a projection projecting into the peripheral wall direction of the recess, with intervening synthetic resin layer for embedding the projecting portion between the face plate and the recess, Fe in the synthetic resin layer
This is to prevent the base plate from coming off .

[0013] The method of manufacturing a golf club head according to the present invention is a method for manufacturing a golf club head, comprising the steps of:
After applying a certain thickness of synthetic resin to the
A face plate provided with a protrusion protruding toward the peripheral wall of the recess
And place them in the recesses and pressurize and heat them.
With the above, the synthetic resin layer in which the protruding portion is solidified with synthetic resin
To prevent the face plate from coming out of the recess.
Aims, wherein the Rukoto thereby fixing the faceplate in the recess.

[0014]

According to the golf club head of the present invention, the protrusion of the face plate is buried in the synthetic resin layer, so that the protrusion is firmly prevented from falling off and is prevented from falling off.

Further, according to the method of manufacturing a golf club head according to the present invention, a synthetic resin having a certain thickness is provided in the recess.
After application, place the face plate in the recess.
When these are pressurized and heated, the synthetic resin solidifies to form a synthetic resin layer. The synthetic resin layer prevents the protruding portion of the face plate from coming off, thereby preventing the face plate from falling off.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a golf club head according to the present invention and a method for manufacturing the same will be described in detail with reference to the drawings.

FIG. 1 is a front view of a golf club head according to a first embodiment of the present invention. In the drawing, reference numeral 37 denotes a metal (including a fiber-reinforced metal), a synthetic resin (including a fiber-reinforced resin), a ceramic or the like. The head body 37 has a hosel 39, a sole 41, and a face 4
3 and the like are integrally formed. And the face part 43
A concave portion 45 that matches the shape of the face portion 43 except for the peripheral portion thereof is formed. As shown in FIG. 2, the concave portion 45 has a peripheral wall 45 a substantially perpendicular to the striking surface of the face portion 43, It has a bottom surface 45b substantially parallel to the striking surface. A face plate 47 is mounted in the recess 45 via a synthetic resin layer 49.

The face plate 47 is made of a synthetic resin including a fiber reinforced resin using carbon fiber or glass fiber, a metal including a fiber reinforced metal (FRM), or the like. Is formed. Then, as shown in FIGS. 2 and 3, the side portion of the face plate 47 is formed so as to gradually spread outward from the hitting surface 47a side to the back surface 47b side over the entire circumference.
The peripheral portion on the back surface 47b side is a protruding portion 51 that protrudes most in the direction of the peripheral wall 45a of the concave portion 45. The face plate 47 and the peripheral wall 45a and the bottom of the recess 45 are formed.
The synthetic resin layer 49 is interposed between the surface 45b and the protruding portion 51 so as to be embedded.

The synthetic resin layer 49 is formed by pressurizing and heating an epoxy-based or urethane-based synthetic resin (adhesive) as described later.
7 is adhered in the concave portion 45 by the synthetic resin layer 49 so as to be flush with the face portion 43.
By embedding 1 in the synthetic resin layer 49, the face plate 47 is prevented from coming out of the recess 45.

The golf club head constructed as described above is manufactured by one embodiment of the method of the present invention as described below. First, as shown in FIG. 2, the head main body 37 in which the concave portion 45 is provided in the face portion 43 is manufactured in advance by a method similar to the related art. Then, as shown in FIG. 4, an epoxy-based or urethane-based adhesive synthetic resin 53 is applied as an adhesive to the peripheral wall 45 a and the bottom surface 45 b of the recess 45 with a fixed thickness, and then the recess 45 is filled in the recess 45. As described above, the face plate 47 is arranged such that the side surface thereof extends over the entire circumference.
The face plate 47 is formed in such a manner that it is formed so as to gradually spread outward from the a side to the back surface 47b side, and the peripheral portion on the back surface 47b side is the projecting portion 51 that protrudes most outward. When the synthetic resin 53 is placed in the concave portion 45 coated with the resin 53, the synthetic resin 53 is filled in the gap between the peripheral wall 45 a of the concave portion 45 and the face plate 47, and between the bottom surface 45 b of the concave portion 45 and the face plate 47. Will be adhered to the concave portion 45 with the protruding portion 51 buried in the synthetic resin 53.

Then, by pressurizing and heating these, the synthetic resin 53 filled between the recess 45 and the face plate 47 is solidified to form a synthetic resin layer 49,
The face plate 47 is formed with a protruding portion 5 by a synthetic resin layer 49.
1 is fixed in the concave portion 45 in a state where the retaining is achieved. Then, the golf club head according to the present embodiment is manufactured by polishing and finishing the hitting surface 47a of the head body 37 and the face plate 47.

As described above, the golf club head according to this embodiment has the face plate 47 mounted in the recess 45.
Is formed so as to gradually spread outward from the striking surface 47a side to the back surface 47b side, and the peripheral portion on the back surface 47b side is formed as a protruding portion 51 most protruding outward, and the protruding portion 51 is formed. Is embedded in the synthetic resin layer 49, so that even when the golf club head is equipped with such a golf club head, the protrusion 51 of the face plate 47 is firmly prevented from being pulled out by the synthetic resin layer 49. Will be planned.

Therefore, according to the golf club head of this embodiment, the fall of the face plate 47 can be prevented more reliably than in the conventional example shown in FIG. In the method of manufacturing a golf club head according to the present embodiment,
After the synthetic resin 53 is applied to the inside of the face plate 5, the molded face plate 47 is placed in the concave portion 45, and these are pressed and heated, so that the synthetic resin layer 49 in which the synthetic resin 53 is solidified forms the face plate 47. Since the golf club head in which the protrusion 51 is prevented from coming off can be manufactured, according to the manufacturing method of the present embodiment, there is no need to provide the easily breakable irregularities 33 unlike the conventional example shown in FIG.
It is possible to manufacture a high-accuracy golf club head that ensures the prevention of falling off.

Since the face plate 47 does not need to be screwed as in the conventional example shown in FIGS.
There is an advantage that manufacturing is extremely easy as compared with such a conventional example. In the above-described embodiment, the protruding portions 51 are provided on the sides of the face plate 47 over the entire circumference. However, for example, the protruding portions 51 are provided on the left and right sides of the face plate 47.
The protrusion 51 does not necessarily need to be provided over the entire circumference of the face plate 47.

FIG. 5 shows a golf club head according to a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals. In the present embodiment, the U-shaped cutout groove 57 is continuously provided over the entire circumference on the side of the face plate 55 formed substantially perpendicular to the hitting surface 55a. Hitting surface 55a
The concave portion 45 is formed on the peripheral portion on the side of the
Are formed in the direction of the peripheral wall 45a, and the face plate 55 and the peripheral wall 4 of the recess 45 are formed.
A synthetic resin layer 49 burying the protruding portion 61 is interposed between 5a and the bottom surface 45b .

The face plate 55 is formed of the same material as the face plate 47 of the first embodiment.
Further, the notch groove 57 may be one in which a plurality of short notch grooves 57 are appropriately arranged.

In the golf club head according to the second embodiment having the above-described structure, the synthetic resin 53 is applied to the inside of the concave portion 45 with a constant thickness, similarly to the manufacturing method in the first embodiment. Thereafter, the face plate 55 may be arranged in the concave portion 45 and pressurized and heated.

On the side of the face plate 55, two projections 59 and 61 projecting toward the peripheral wall 45a of the concave portion 45 are provided with the cutout groove 57 interposed therebetween. When placed in the recess 45,
The synthetic resin 53 is filled in the gap between the peripheral wall 45a of the concave portion 45 and the face plate 55 and the gap between the bottom surface 45b of the concave portion 45 and the face plate 55, respectively, and the projecting portion 61 of the face plate 55 is embedded in the synthetic resin 53. It will be stuck to the recess 45 in this state.

When these are pressurized and heated, the synthetic resin 53 solidifies into a synthetic resin layer 49, and the face plate 55 is placed in the recess 45 in a state where the protrusion 61 is prevented from being removed by the synthetic resin layer 49. The golf club head according to the present embodiment is manufactured by polishing and finishing the hitting surface 55a of the head body 37 and the face plate 55 at the end.

Therefore, with the golf club head according to the present embodiment, similarly to the golf club head according to the above-described first embodiment, the face plate 55 can be reliably removed, and the manufacturing method according to the present embodiment can be improved. it also I, so that the higher the golf club head of precision which aimed at the reliable falling prevention of the face plate 55 can be easily manufactured.

FIG. 6 shows a golf club head according to a third embodiment of the present invention. In the drawing, reference numerals 63 and 65 denote a head body and a face plate formed of the same material as the head body 37 and the face plate 47, respectively. A recess 69 is formed in the face portion 67 of the head main body 63.

The concave portion 69 has a shape in which the peripheral wall 69b is inclined so as to gradually expand from the bottom surface 69a toward the peripheral edge of the face portion 67.
Are formed with a plurality of concave portions 71 in order to increase the bonding effect of the synthetic resin 53.

On the other hand, the side portion of the face plate 65 is formed in parallel with the peripheral wall 69b so as to protrude outward from the back surface 65a toward the hitting surface 65b. Also, a U-shaped notch groove 73 is provided continuously on the entire periphery on the side portion, and by providing the notch groove 73 in this manner, the protrusion protruding in the direction of the peripheral wall 69b of the concave portion 69 is provided. The parts 75 and 77 are the striking surface 65b of the face plate 65.
It is formed on the peripheral edge of the side and the back surface 65a side.

The bottom surface 69a of the recess 69 and the peripheral wall 6
9b and the face plate 65, the protrusion 77
Are buried in the synthetic resin layer 49. Note that, as in the second embodiment, the notch groove 73 includes a plurality of short notch grooves 7.
3 may be appropriately arranged.

In the golf club head of the present embodiment having the above-described structure, the synthetic resin 53 is applied to the recess 69 with a constant thickness, similarly to the manufacturing method of the first embodiment. After that, the face plate 65 is arranged in the concave portion 69, and these are manufactured by pressurizing and heating them.

Therefore, according to the present embodiment, similarly to the golf club head according to the first embodiment, the protrusion 77 is embedded in the synthetic resin layer 49 to prevent the face plate 65 from coming off. The plate 65 can be reliably prevented from falling off, and a highly accurate golf club head that ensures the face plate 65 from falling off can be easily manufactured.

In this embodiment, the bottom 69a of the recess 69 is formed.
Since the plurality of recesses 71 are formed in the first embodiment to increase the bonding effect of the synthetic resin 53, the head body 63 and the face plate 65 can be more firmly fixed than the golf club heads of the above embodiments.

[0038]

As described above, according to the golf club head of the present invention, the face plate can be more reliably prevented from falling off than before, and according to the method of manufacturing a golf club head of the present invention. As a result, a golf club head with high precision, which ensures prevention of the face plate from falling off, can be easily manufactured.

[Brief description of the drawings]

FIG. 1 is a front view of a golf club head according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged view of a main part of the cross-sectional view shown in FIG. 2;

FIG. 4 is a cross-sectional view showing a method of manufacturing the golf club head shown in FIG.

FIG. 5 is a sectional view of a main part of a golf club head according to a second embodiment of the present invention.

FIG. 6 is a sectional view of a main part of a golf club head according to a third embodiment of the present invention.

FIG. 7 is an exploded perspective view of a conventional golf club head.

8 is a cross-sectional view of the golf club head shown in FIG.

FIG. 9 is a cross-sectional view of a conventional golf club head.

FIG. 10 is a plan view of a conventional golf club head.

[Explanation of symbols]

 37, 63 Head body 43, 67 Face portion 45, 69 Recess 45a, 69b Peripheral wall 47, 55, 65 Face plate 47a, 55a, 65b Striking surface 47b, 55b, 65a Back surface 49 Synthetic resin layer 51, 61, 77 Projection 53 Synthetic resin 57, 73 Notch groove

Claims (2)

(57) [Claims] In a golf club head having a face plate mounted in a concave portion provided in a face portion of a head body, a protrusion protruding in a peripheral wall direction of the concave portion is formed in a peripheral portion of the face plate. A synthetic resin layer for embedding the protruding part is interposed between the face plate and the concave part, and the synthetic resin layer prevents the face plate from coming off.
Golf club head which is characterized in that Tsu. 2. A synthetic resin having a predetermined thickness is applied to a concave portion formed in a face portion of a head main body, and then a peripheral portion is formed.
Face with a protruding part that protrudes in the direction of the peripheral wall of the concave part
Place the plate in the recess and press and heat them.
In this way, the above-mentioned protrusions are
Embedded in the oil layer to prevent removal of the face plate from the recess
Achieving fit, manufacturing method of the golf club head, wherein Rukoto thereby fixing the faceplate in the recess.