JP2517140Y2 - Golf club - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a club for hitting a golf ball, particularly a hit ball for a club which is required to have a direction called an iron and less rolling of a dropped ball. Regarding surface improvement.

[Conventional technology]

2. Description of the Related Art Conventionally, a club called an iron is usually composed of a plurality of clubs having different angles of a ball striking surface, that is, a loft angle.

The larger the loft angle, the shorter the flight distance and the less rolling from the drop point is required.

For that purpose, it is necessary to rotate the ball upward with respect to the flight line, that is, to apply a backspin to generate buoyancy in the ball and to generate a force that returns to the rear due to the frictional force with the ground when falling. is there.

In order to give this backspin to the ball, the conventional golf club has a groove having a V-shaped cross section formed on its ball striking face.

Then, due to the frictional force of the ball that digs into the V-shaped groove, the ball is caused to rotate as backspin.

[Problems to be solved by the device]

However, if the cross section of the groove for giving this backspin is V-shaped, as shown in FIG.
The angle .theta. Into which the groove 3 is embedded becomes large, a large frictional force with the ball 1 cannot be obtained, and slip is likely to occur.

Therefore, sufficient backspin could not be given.

SUMMARY OF THE INVENTION In order to solve such a problem in a conventional golf club, the present invention aims to increase the frictional force due to the bite between the ball and the ball striking face, and to give a strong backspin to the ball. To do.

[Means for solving the problem]

In order to achieve this object, the present invention forms a plurality of triangular grooves on the ball striking face of the club in an arc shape centering above and below the ball striking face, and Make the surface almost perpendicular to the striking surface.

[Action]

When hitting a ball, this club makes the angle of the groove that bites into the ball smaller than before when it hits the ball, increasing the frictional force generated between the ball and the ball by increasing the angle to a right angle. , Gives a strong backspin to the ball.

[Example of device]

Next, an example of implementation of the present invention will be described with reference to FIGS.

FIG. 1 shows a hitting surface of an iron club called No. 9. A hitting surface 2 of this club is provided with a plurality of grooves 5, which are substantially parallel to the lower side 4 thereof, and orthogonal to the ends of the grooves 5. A vertical groove 6 is engraved.

As shown in FIG. 2, the lower surface 5a of the groove 5 is substantially perpendicular to the ball striking face 2, and the groove 5 as a whole has a sawtooth shape.

Therefore, in hitting the ball, when the hitting surface 2 hits the ball 1, the groove 5 is in a state of biting into the ball 1.
The angle .theta. Of the lower surface 5a of the sphere 1 with respect to the sphere 1 is close to a right angle, and the frictional force with the sphere 1 increases.

As a result, the sphere 1 is strongly rotated in the direction of arrow A, and a strong backspin is applied.

In the above embodiment, the case where a plurality of parallel linear grooves 5 are formed has been described. However, as shown in FIG. 3, an arcuate groove 6 having a center below the ball striking face and a ball striking face. The effect can be made more remarkable by intersecting the arcuate groove 7 having a center upward with respect to.

[Effect of device]

According to the present invention, as described above, a plurality of triangular grooves are formed in an arc shape on the ball striking surface of the club with the center above and below the ball striking surface, and the lower surface of the triangular groove is hit. By making the surface substantially perpendicular to the surface, it is possible to obtain a strong frictional force with the ball and give a strong backspin to the ball.

Since the buoyancy is obtained while the ball is flying, not only can the flight distance be increased, but also when the ball falls, the friction force between the ground and the rotation direction of the ball causes the ball to fly. Can generate a force that returns in the opposite direction.

Therefore, the rolling of the dropped ball can be reduced, or the ball can be stopped or returned to the place.

[Brief description of drawings]

FIG. 1 is a front view of a ball striking face according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view of a main part at the time of striking a ball, FIG. 3 is a front view of a ball striking face of another embodiment, and FIG. It is an expanded sectional view at the time of hitting a conventional hitting surface. 1 ... Sphere, 2 ... Hitting surface, 5 ... Groove, 5a ... Lower surface, .theta .... Biting angle, A ... Sphere rotation direction.

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of triangular grooves are formed on the ball striking surface of the club in a circular arc shape with the center above and below the ball striking surface, and the lower surface of the triangular groove is against the ball striking surface. A golf club characterized by having a substantially right angle.