JP3374891B2 - Golf club - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a golf club. A golf club is composed of a shaft and a club head, and is usually made of wood, iron,
And putter. Irons are classified by the loft angle, and the loft angle is small (for example, 20 to 3
(0 degrees) irons are referred to as long irons, and irons with large loft angles (eg, 40-50 degrees) are referred to as short irons. Irons are numbered from long irons to short irons, for example, No. 1, No. 2 to No. 8, No. 9, PW (pitching wedge), SW (sand wedge), LW (lob wedge, lob wedge). ) Etc. Conventional iron heads have a face for hitting a golf ball and a back on the back (rear), and the back has a cavity (dent) and the back is smooth. The thing of the surface (solid back) is well known, and the head of the cavity back can generally set the center of gravity rearward, so the best result is obtained when hitting a sweet spot, that is, a golf ball, than the head of the solid back. A large area on the face to be captured. However, the cavity back head also has a limit in setting the position of the center of gravity behind the face, and thus the sweet spot has a limit. In order to solve such a problem, the same applicant disclosed in Japanese Patent Application Laid-Open No. 5-337222, a head body in which a sole is formed together with a back and a recess is formed on the front surface corresponding to a face, and the head body. A head including a face member formed of a plate-like material made of a material having a smaller specific gravity and fitted into the recess is proposed. In this prior art, the sweet spot is enlarged by setting the center of gravity behind the head by utilizing the specific gravity difference between the face member and the head body.
However, it is difficult to set the center of gravity further behind the head only by the difference in specific gravity between the two. Accordingly, the present invention provides a golf club head in which a face member having a specific gravity smaller than that of the head body is fitted in a recess formed corresponding to the face of the head body in order to solve the above problems. It is an object of the present invention to provide a golf club that can further increase the sweet spot by setting the rear side to the rear. The present invention relates to a head body having a sole and a recess formed on the front surface corresponding to the face, and a plate shape made of a material having a specific gravity smaller than that of the head body. A golf club in which a shaft is connected to the head body of a golf club head comprising a face member made of a material and fixed to the recess, and a weight fixed to the rear surface of the head body, wherein the weight is more specific than the head body. greater material by forming an annular, together with the rear side is fitted is smaller than the front portion in the rear surface concave side of the outer peripheral surface and said head body before Symbol weight, the rear concave side and the inner peripheral surface of the weight back side is fitted is larger than the front portion in, and the U
The rear of the pair of left and right soles integrated with the eight
The golf club is characterized by being fitted into a continuous recess in the sole. In addition to a difference in specific gravity between the head body and the face member, a difference in specific gravity also occurs between the head body and the weight. Can be distributed in the periphery of the head. DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS. The golf club of the example is 1
No. 2, No. 8 to No. 9, No. 9, PW, SW, LW, etc. are shown. The head 1 is provided with a plate-like face member 3 on the front side of the head body 2 and a weight 4 on the rear side.
Is provided. The head body 2 is made of a metal such as stainless steel or iron, and has a recess 5 at a position corresponding to the face on the front surface. A through hole 6 is formed behind the recess 5. A sole front portion 7 is formed at the lower portion of the base plate. Furthermore, a shaft S is provided on one side of the head body 2.
A hosel 8 serving as a shaft mounting portion for connecting the two is provided. The face member 3 fixed to the recess 5 is formed of a plate-like material having a specific gravity smaller than that of the material of the head body 2, for example, a metal such as titanium, titanium alloy, aluminum, aluminum alloy, etc. The face member 3 is pressed into the recess 5. As shown in FIG. 2, the rear side portions 9 and 9A (width A and A ') are larger than the front side portions 10 and 10A (width B and B') and are fitted as shown in FIG. (A> B, A
'>B'). In this fitting, the rear side portions 9A of the peripheral surface of the face member 3 or the peripheral surface of the concave portion 5 are the front side portions in advance.
It is formed in a taper shape wider than 10, 10A, and is fitted by press-fitting, or the peripheral surface of the face member 3;
The peripheral surface of the recess 5 may be formed vertically, and A> B and A ′> B ′ may be obtained as a result of the press-fitting force. In the figure, 11 is a lateral groove called a score line or the like. A weight 4 provided on the rear surface of the head body 2
Is formed of a material having a higher specific gravity than the material of the head body 2, for example, a metal such as copper, beryllium copper alloy, tungsten, etc., and has a through hole 12 at the center so as to communicate with the through hole 6. The sole rear part 13 is formed at the bottom.
It is integrally formed. The weight 4 is press-fitted into the rear surface of the head main body 2 by a press or the like. As shown in FIG. 2, the rear side portion 15 is located on the outer peripheral surface of the weight 4 and the outer peripheral surface of the head main body 2 or the rear concave portion 14 at the press-fitting location. (Width C) is smaller than front side portion 16 (Width D) and is fitted (D>
C). In this fitting, the front side portion 16 of the outer peripheral surface 14A of the weight 4 or the outer peripheral surface 14A of the rear concave portion 14 is formed in a taper shape larger than the rear side portion 15, and is fitted by press-fitting. Alternatively, the outer peripheral surface of the weight 4 and the outer peripheral surface 14A of the rear concave portion 14 may be formed vertically so that D> C results as a result of the press-fitting force. Further, as shown in FIG. 2, the inner peripheral surface of the weight 4 and the rear surface recess of the head body 2
On the 14th side, the rear side portion 17 (width E) is larger than the front side portion 18 (width F) and is fitted (E> F). In this fitting, the front side portion 16 of the inner peripheral surface of the weight 4 or the inner peripheral surface of the rear concave portion 14 is formed in a taper shape larger than the rear side portion 17 and is fitted by press-fitting. Alternatively, the inner peripheral surface of the weight 4 and the inner peripheral surface of the rear concave portion 14 may be formed vertically so that E> F is obtained as a result of the press-fitting force. Further, the sole rear portion 13 is press-fitted and fitted into the sole concave portion 19 connected to the rear surface concave portion 14 as described above. As described above, in the above embodiment, the weight 4 is provided in addition to the face member 3 and the head body 2.
The center-of-gravity position G of the head 1 is set according to the shape of the face member 3, the head body 2, and the weight 4 and the specific gravity of each material. As described above, in the above-described embodiment, the head main body 2 in which the sole front portion 7 is formed and the concave portion 5 is formed on the front surface corresponding to the face, and the material having a specific gravity smaller than that of the head main body 2 are formed. The head member 2 includes a face member 3 formed of a plate-like material and fixed to the concave portion 5 and a weight 4 fixed to the rear surface of the head body 2. In addition to the difference in specific gravity between the head body 2 and the face member 3, The gravity center G can be set behind the head 1 by utilizing the specific gravity difference with the weight 4. Therefore, the distance (center of gravity depth) between the front surface (face) of the face member 3 and the center of gravity G can be increased, and the sweet spot can be enlarged. Further, the weight 4 is made of a material having a specific gravity larger than that of the head body 2 and at least the sole rear portion 13 is formed, so that the center of gravity G of the head 1 is obtained.
Can be set below the head 1. Therefore, it is possible to further increase the sweet spot by increasing the depth of the center of gravity. In addition, since the weight 4 is formed in an annular shape, the weight of the weight 4 is dispersed not in the center of the head but in the peripheral portion, so that the sweet spot can be enlarged. In the embodiment, the head main body 2 and the weight 4 are joined in a tapered shape so that D> C and E> F as described above, so that the head body 2 and the weight 4 are strong enough to withstand the impact at the time of hit. It can demonstrate the adhesive strength. In addition, the sole rear 13
Since the center of gravity can be set further downward, the sole rear portion 13 is provided in a pair of left and right, so that the weight of the weight 4 can be distributed to the left and right. The present invention is not limited to the above-described embodiments, and various changes can be made in the shapes and materials of the face member, head body, weight, and the like. The present invention is formed by a head body in which a sole is formed and a recess is formed on the front surface corresponding to the face, and a plate-like material made of a material having a specific gravity smaller than that of the head body. In a golf club having a shaft connected to the head body of a golf club head comprising a face member fixed to the recess and a weight fixed to the rear surface of the head body, the weight is made of a material having a specific gravity greater than that of the head body. formed in a ring, together with the rear side is fitted is smaller than the front portion in the rear surface concave side of the outer peripheral surface and said head body before Symbol weight, back side at the inner circumferential surface and the rear surface concave side of the weight There fitted is larger than the front portion, and it integrally with said weight
A sole in which a rear portion of a pair of left and right soles is connected to the concave portion on the rear surface
It is a golf club characterized by being fitted into a recess ,
In addition to the specific gravity difference between the head body and the face member,
Since there is a difference in specific gravity between the head body and the weight,
The center of gravity position of the head can be set to the rear, the distance between the front surface (face) of the face member and the center of gravity, that is, the depth of the center of gravity can be increased to increase the sweet spot, and the sole is provided in the weight, so the center of gravity The position can be set below the head, the depth of the center of gravity can be further increased, the weight weight can be distributed to the left and right, and the weight weight can be distributed to the periphery of the head since the weight is annular. In addition, the weight can exhibit a strong fixing force that can sufficiently withstand the impact at the time of hit.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view showing an embodiment of the present invention. FIG. 2 is an enlarged cross-sectional view of a main part showing an embodiment of the present invention. FIG. 3 is a rear view showing an embodiment of the present invention. FIG. 4 is an exploded perspective view seen from the rear side showing an embodiment of the present invention. FIG. 5 is an exploded perspective view seen from the front side showing an embodiment of the present invention. [Explanation of Symbols] 2 Head body 3 Face member 5 Weight 7 Sole front part 8 Hosel (shaft mounting part) 13 Sole rear part 14 Rear surface concave part 15 Rear side part (width C) 16 Front side part (width D) 17 Rear side part ( Width E) 18 Front side (Width F) 19 Sole recess S Shaft

Claims (1)

(57) [Claims] [Claims] [Claims] [Claim 1] By a head main body formed with a sole and formed with a concave portion corresponding to the face on the front surface, and a plate-like material formed of a material having a specific gravity smaller than that of the head main body A golf club in which a shaft is connected to the head body of a golf club head comprising a face member formed and fixed to the recess, and a weight fixed to the rear surface of the head body, wherein the weight has a higher specific gravity than the head body material by forming the annular, together with the rear side is fitted is smaller than the front portion in the rear surface concave side of the outer peripheral surface and said head body before Symbol weights, after the said rear recess side and the inner peripheral surface of the weight side is fitted is larger than the front portion, and the weight and integral with a pair of left and right
Fit the sole rear part into the sole concave part that is connected to the rear concave part.
A golf club characterized by: