JPS5985678A - Wood head of golf - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a golf wood head.

The weight of golf wood heads is usually between 200 and 210Z, and most of the materials that are used are generally persimmon wood, with a specific gravity of about 0.9 to i, o. Therefore, the weight of the wooden body alone is 80~20
0g, and it is difficult to place a heavy object inside this head and perform so-called overlapping distribution. For this purpose, various types of interest with a small specific weight have been used, but at present, no interest has been found that is good in terms of elasticity, repulsion, etc.

The wood head of the present invention is lightweight (specific gravity is PFO,
35~0.7) L5 is made by using inorganic minute hollow sphere powder with extremely high strength and repulsive force, mixing it with resin, molding and hardening it, and by appropriately selecting the mixing ratio. A wood head of a desired weight can be obtained, and a heavy object can be placed inside to achieve the desired weight distribution, and the above-mentioned inorganic material i) has excellent elasticity and repulsion due to the small hollow sphere powder. However, its performance can be significantly improved.

Next, the details will be explained with reference to the illustrated embodiment. (1
) is a head outer shell made of polycarbonate resin, etc., (2
) is the composition according to the invention charged in the outer shell (1), (
3) is a heavy object inserted into the composition (2) behind the ladle spherical surface (4) to distribute the weight, (5) is a shaft, and the composition (2) contains an inorganic material. A mixture of fine hollow sphere powder with epoxy resin (specific gravity: about 1.2) and other resins and hardening is used.

As an example, the inorganic microscopic hollow sphere powder having the following physical properties and chemical components was used.

Physical 4', r Shape: Microscopic hollow sphere Color: White Specific gravity 4 0.35 Particle size distribution = 30μ~300μ Melting point
: 1200°C Thermal conductivity (KC bow 4C): 0.06450% Breaking hydrostatic pressure (K par: 100-120 chemical component stoichiometric amount%) Si02: 60-65 Al2O2: 27-33 Na2o, x2o: 0.5 ~4.0Pe203
' : 4mnx This micro hollow sphere powder is suitable for lightweight plaster and concrete,
It has applications in ultra-light fireproof materials, etc.

This fine hollow sphere powder is thoroughly mixed with a resin to form a composition (
2) is obtained, and as shown in the figure, a heavy object (3) is filled into an outer shell (1) placed at an appropriate position, and the head is made by hardening. The blending ratio of the inorganic fine hollow sphere powder in the above composition (2) is determined by taking into consideration the strength, repulsive force, weight, etc. of the wood head, but if the amount of the inorganic fine hollow sphere powder is extremely small, The effects of the present invention cannot be obtained sufficiently, such as the hoe 1 of the head becomes heavy, and if the amount is too large, the viscosity becomes high, the filling property deteriorates, and it becomes brittle.

The preferred blending ratio in this example was about 20-80% by weight. (Specific gravity approximately 0.5-0.8).

As mentioned above, the wood head of the present invention is made by mixing inorganic fine hollow sphere powder with resin and molding and hardening it, so it has significantly improved strength and repulsion and is lighter in weight than conventional wooden heads. It has the following effect: 1;

1. Because the overall weight I'It is light, a heavy object is placed behind the ball hitting surface to distribute the weight to increase flight distance, to distribute the weight with emphasis on stability, and to make it easier to lift the ball. Various designs such as distribution can be made extremely easily.

2. Due to improved strength and repulsion, flight distance will inevitably improve.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view of a wood head showing one embodiment of the present invention. (1)...Hand shell (2)...Composition (3)...Heavy object. Procedural amendment (voluntary) Commissioner of the Patent Office Kazu Wakasugi Failure 1, indication of the case 1982 Patent Application No. 195140 2 Title of the invention Golf wood head 3, person making the amendment Relationship to the case Patent applicant Mitakashika Millen A Resident Address: 9-42-23 Kamirenjaku, Mitaka City, Tokyo Name: Nippon Golf Co., Ltd. 4, Agent 6 Number of inventions increased due to amendment ``Use of natural or synthetic resin as the resin as the binder phase above'' It is also possible to use natural or synthetic rubber as a binding material.Also, two or more of these 4J materials may be used in combination.''

Claims (1)

[Claims] A golf wood head made by mixing inorganic minute hollow sphere powder with resin and molding and hardening it.