JPH0450051Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement in a golf club head having a ceramic sprayed coating layer.

[Conventional technology]

In recent years, as the compression ratio of golf balls has increased, golf club head surfaces have been made to have higher hardness, and golf club heads have appeared in which a ceramic material plate having high hardness is attached to the wood face surface.

However, attaching the face of the ceramic plate is time-consuming and, in addition, the ceramic plate itself has to be fairly thick to absorb shock during shot, making it expensive.

In order to eliminate the trouble of attaching the ceramic plate, Japanese Patent Laid-Open No. 173570/1983 describes an attempt to form a ceramic thermal spray coating instead of attaching the ceramic plate.

[Problems that the invention aims to solve] However, the thickness of the ceramic film formed by thermal spraying is about 0.5 mm at most, and it cannot withstand the impact during shot and may crack or may not bond with the base material. Adhesion was also poor and there was a risk of peeling.

The problem to be solved with this invention is to solve the problem of forming a ceramic sprayed coating on the face of a golf club, to make sure that the properties of the ceramic material can be fully exhibited even with the sprayed coating, and to prevent peeling. To improve the performance of golf clubs by forming a ceramic layer that does not cause cracks or cracks.

[Means for solving problems]

The present invention is based on the fact that in a golf club head having a ceramic sprayed coating on the ball hitting surface, an intermediate layer consisting of a sprayed coating layer of a mixed powder of metal powder and hard resin powder is provided between the head material and the ceramic sprayed coating. Thus, the above problems were solved.

[Effect]

An intermediate layer consisting of a sprayed coating layer of a mixed powder of metal powder and hard resin powder provided between the head material and the ceramic sprayed coating improves the bonding between the head material and the ceramic sprayed coating, and improves the bonding properties of the ball hitting surface. The ceramic spray coating formed on the head material moderately buffers the impact of the ball when hit, and the repulsive force of the head material is transmitted to the ball, increasing the flight distance and accuracy of the ball.

〔Example〕

The present invention will be explained below with reference to the attached drawings showing an example in which the present invention is applied to a wood club head.

1 shows a shock absorbing layer made of a sprayed coating of a mixed powder of metal powder and hard resin powder on the sweet spot area surface 2 of a carbon head made of a wood material. A top layer 3 is formed on the shock absorbing layer 1. The material and thickness of the shock absorbing layer 1 must be adjusted depending on the materials of the head material and the top layer 3. When the material forming the sweet spot area surface 2 of the wood is made of carbon, and the top layer 3 is made of alumina, titania, and composite oxide, 95% by weight of stainless steel, 2.5% by weight of epoxy resin, and 2.5% by weight of nylon are used. Spraying material consisting of 0.05% by weight using a gas plasma spray gun
A ball with a shock absorbing layer made of a thermally sprayed coating with a thickness of about mm is most suitable from the viewpoint of adhesion to the material and transmission of impact when hitting the ball.

Top layer 3 that directly receives the impact when hitting the ball
It is desirable that the ceramic film has strong interparticle bonding properties, and from this point of view, a composite oxide of alumina and titania, which is dense and has excellent interparticle bonding strength compared to other ceramic films, is suitable. . The top layer 3 is completed by forming a thermal spray layer using a gas plasma spray gun, and applying resin coating as a post-treatment.

In this case, as a result of various experiments, it was found that when the ceramic sprayed layer is made thicker, it tends to peel off, whereas when the ceramic sprayed layer is made thinner, on the order of 0.02 to 0.05 mm, it is less likely to peel off.

Although the above description describes an example in which the present invention is applied to the head of a wood club, it can also be fully applied to the head of an ordinary iron club.

[Effect of idea]

With this invention, it is possible to easily manufacture a head with ball-hitting properties similar to those embedded with ceramic blocks, and in addition, it is possible to easily manufacture a head with ball-striking properties similar to those embedded with ceramic blocks. Since the shock absorbing layer relieves the stress, durability is improved, and a head with properties that combines the high repulsion of the ceramic material itself with the properties of the head material can be obtained.

[Brief explanation of the drawing]

The attached figure shows an example of the application of the present invention to a wood club head. 1... Shock absorption layer, 2... Sweet spot area surface, 3... Top layer.

Claims (1)

[Scope of utility model registration request] A golf club head having a ceramic sprayed coating on the ball hitting surface, characterized in that an intermediate layer consisting of a sprayed coating layer of a mixed powder of metal powder and hard resin powder is provided between the head material and the ceramic sprayed coating. club head.