JPH0241006Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a face plate that is attached to the face of a so-called wood-type golf club head.

In recent years, with the use of two-piece balls with hard surfaces, aluminum has been added to the face of the head body to prevent the head from cracking or denting the face of the head due to the impact force of the ball when hitting. Solid face plates made of metal materials with hard surface hardness, such as aluminum alloys or titanium, have come into use.
However, since the specific gravity of the metal material used in this type of face plate is high, there is a problem in that when this type of face plate is attached to the head body, the weight of the entire head becomes too heavy. In order to solve this problem, conventional methods have been used, such as making the head body smaller, or carefully selecting a material with a lower specific gravity as the material for the head body, but in the case of the former, In the latter case, the head body becomes smaller, making it impossible to hit the ball with confidence.In the latter case, the strength of the head body is weak because materials with lower specific gravity are carefully selected and used for the head body. However, the problem was that the head would break easily.

Furthermore, since a face plate made of a solid metal material is attached to the face surface of the head body, the center of gravity of the head is located further away from the face surface. In this case, the side spin is less likely to be applied to the ball, and if the ball flies off in the wrong direction, its trajectory cannot be corrected, resulting in poor directionality.

Further, Japanese Utility Model Application Publication No. 113559/1983 discloses a golf club wood face in which a carbon fiber-reinforced plastic plate is formed into a predetermined shape and grooves are formed on the back surface of the plate. The face of this golf club Utsudo is intended to provide a face that provides a large repulsion force to the ball, makes a pleasant sound when hitting the ball, and is also highly durable. Since no gap is formed between the formed ribs and the head body, the face plate does not undergo elastic deformation upon impact and no repulsive force can be expected to be imparted to the ball.

Furthermore, in Utility Model Application No. 49-50063, a chip made of tungsten carbide or titanium carbide is planted in the center of the ball hitting surface of a face plate made of hard synthetic resin, and the face plate is attached to the head body made of wood or synthetic resin. A mounted golf club head is disclosed. The purpose of this golf club head is to provide a golf club head that does not deteriorate in appearance and can secure sufficient repulsive force, but since there are no ribs formed on the back of the face plate, it is weak in strength. Also, since the structure is such that the tip is planted in the center of the ball hitting surface, there is a risk that the tip may peel off.

In view of the above-mentioned drawbacks, the present invention uses a lighter face plate without weakening the strength, thereby reducing the weight of the entire head, and also reduces the rebound of the ball due to the elastic deformation of the face plate when hitting the ball. To provide a head of a golf club that can increase the size of the head and position the center of gravity of the head far from the face surface.

An embodiment of the present invention will be described below with reference to the drawings.

The head body 1 is made of wood, resin, etc., and a face plate 3, which will be described later, is attached to the center of a face surface 2, which is a ball-hitting surface.

What is shown in FIGS. 2 to 4 is the face plate 3 used in the present invention. Face plate 3
is made of materials such as aluminum, titanium, magnesium alloys, stainless steel, iron, ceramics, carbon fiber reinforced synthetic resin, etc. into a trapezoidal shape by die casting, casting, forging, sintering, or injection molding. It is being A large recess 7 is formed in the center of the back surface 5 of the face surface 4 of this face plate 3, leaving a peripheral part 6 of a certain uniform width, and the depth of the recess 7 is approximately the thickness of the face plate 3. It's about half to two-thirds. Furthermore, a cross-shaped reinforcing rib 8 protrudes from the bottom of the recess 7 in a direction opposite to the face surface 4, and forms a gap between the reinforcing rib and the head body.

As in the above embodiment, the face plate 3 has a large concave portion in the center of the back surface 5 of the face surface 4.
The weight is correspondingly reduced, and since the cross-shaped rib 8 is integrally formed at the bottom of the recess 7, the second moment of inertia of the face plate 3 is increased, and its strength is reinforced. ing. Further, since a gap is formed between the reinforcing rib and the head body, the face plate is elastically deformed when the ball is hit, increasing the rebound of the ball. Therefore, by attaching this lightweight face plate 3 to the head main body 1, the head main body 1 can be made larger by the weight thereof, and the center of gravity of the head can be located far from the face surface 2. As a result, even when the ball is hit off the sweet spot, side spin is applied well, the trajectory of the ball is corrected, and deviations in direction can be reduced. Further, since the reinforcing ribs 8 are integrally provided on the back surface 5 of the face surface 4, the face plate 3 can have strength comparable to that of a conventional solid metal face plate.

In this embodiment, the shape of the face plate 3 is trapezoidal, but of course it is not limited to this shape and may be of various shapes. Further, the shape of the reinforcing rib 8 may be other than a cross shape, for example, a horizontal rib, a vertical rib, or the like.

As described above, the present invention is a face plate in which a recess is provided on the back side of the face, a reinforcing rib is integrally formed within the recess, and a gap is formed between the reinforcing rib and the head body. , it is possible to provide a lightweight and strong face plate, and since the face plate elastically deforms when hit, the rebound of the ball increases. Therefore, by attaching this face plate to the head body, the head It is possible to prevent cracking of the club head, enlarge the sweet spot by enlarging the head body, and furthermore provide a club head with better directionality by moving the center of gravity to the rear of the head.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a golf club head embodying the present invention, FIG. 2 is a front view of the face plate according to the present invention, FIG. 3 is a rear view of the face plate in FIG. 2, and FIG. It is a sectional view taken along line AA' in the figure. 4... Face surface, 5... Back surface, 7... Concave portion,
8...Reinforcement rib.

Claims (1)

[Scope of utility model registration request] A face plate for a golf club head, which has a recess on the back surface of the face, a reinforcing rib is integrally formed in the recess, and a gap is provided between the reinforcing rib and the head main body.