JPH0636840Y2 - putter - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a non-metal shaft made of fiber reinforced plastic (plastic reinforced with resin such as carbon fiber, glass fiber, boron fiber) and a putter head. The present invention relates to an improvement of the connecting portion of the shaft, and more specifically to a putter that prevents damage at the connecting portion at the tip of the shaft and effectively prevents peeling of the surface layer.

[Conventional technology]

Conventionally, as a structure of a connecting portion between a putter head and a shaft, for example, a so-called over hosel type putter in which a tip of a hosel portion integrally formed on the putter head is inserted and attached to a tip of a hollow cylindrical shaft is attached. A so-called inner hosel type putter in which the tip of a shaft is inserted into a hosel portion formed in a hollow shape is known.

[Problems to be Solved by the Invention]

By the way, the over-hosel type putter has an advantage that the ball is easy to see during putting because the hosel portion 2 of the putter head 1 is thin and there are few steps as compared with the inner hosel type putter as shown in FIG. Have.

Further, the structure of the connecting portion X between the shaft 2 and the hosel portion 2 of the overhosel type putter has two kinds of methods: a method of directly inserting the hosel portion 2 into the shaft 3 and a method of inserting a ring formed of celluloid or the like in the middle. The method is commonly used.

However, as the shaft 2 having the above structure,
In terms of strength and durability, a steel shaft is used in most cases, and in the case of the shaft 2 of the over-hosel type putter using a non-metal shaft such as a carbon shaft, the above-mentioned direct insertion connection method is adopted. In this case, as shown in FIG. 3, there is a problem that the tip connecting portion X of the shaft 2 comes into contact with the tip of the metal hosel portion 2 and scratches the outer peripheral surface of the shaft tip or causes surface peeling of the material. there were.

Further, there is a problem that the appearance is deteriorated when a step is formed at the connecting portion between the shaft tip and the hosel portion tip.

[Purpose of device]

This invention was devised by paying attention to such conventional problems, and the purpose thereof is the tip of the hosel part,
By interposing a ring member made of a rubber-like elastic material between the connection part with the tip of the non-metallic shaft, it is possible to effectively prevent the tip of the shaft from being scratched and the surface layer of the material from peeling off. It is intended to provide a putter having an improved appearance by correcting a step at a connecting portion with a tip of a hosel portion.

[Means and Actions for Solving the Problems]

In order to achieve the above object, the present invention is a putter in which a tip of a hosel portion integrally formed with a putter head is inserted and attached to a tip of a shaft made of fiber-reinforced plastic formed in a hollow cylindrical shape. By interposing a ring member made of a rubber-like elastic body between the connecting portion between the tip of the hosel portion and the tip of the shaft, the tip of the shaft is configured so as not to come into direct contact with the tip surface of the hosel portion,
The outline is to improve the appearance by scratching the shaft tip and effectively preventing the surface layer of the material from peeling, while correcting the step at the connection part between the shaft tip and the hosel tip by the ring member. is there.

〔Example〕

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

In addition, in the following description, the same components as those of the above-described conventional example are denoted by the same reference numerals.

FIG. 1 is a vertical sectional view of a hosel portion 2 and a shaft 3 in an overhosel type putter according to the present invention.

The shaft 3 is made of a fiber reinforced plastic material such as a carbon shaft, and a small-diameter tip 2a of the hosel portion 2 is inserted into the tip of the shaft 3 with a predetermined length (generally 20 mm to 60 mm). .

The connecting portion X between the tip of the shaft 3 and the hosel portion 2
A ring member 5 made of a rubber-like elastic body, which is slightly larger than the outer diameter of the shaft 3, is interposed between the two.

The material of the ring member 5 may be any elastomer, but ethylene-propylene terpolymer rubber (EPDM), chloroprene rubber, chlorosulfonated polyethylene, etc., which are particularly excellent in weather resistance, are preferable. The hardness of the elastomer is JIS hardness of 80 or less, preferably 70 to 30.

If the hardness is 80 or more, it is hard as it is presently found in cellulose plastics, so there is a risk of damaging the tip of the shaft and causing peeling of the surface layer.

When the hardness is 30 or less, when the shaft is inserted into the hosel, the deformation is large and the gauge of the gap between the shaft and the hosel cannot be secured.

Further, the outer diameter of the ring member 5 must be slightly larger than the outer diameter of the shaft 3, and the difference t between the outer diameters is:
0.1 mm to 1.0 mm is preferable. In this case, below 0.1 mm,
If the tip of the shaft 3 hits another club or the like, the surface layer of carbon peels off, and if it is 1.0 mm or less, the original effect of the over hosel is lost.

[Effect of device]

This invention is a putter in which the tip of the hosel portion integrally formed with the putter head as described above is inserted and attached to the tip of a shaft made of fiber reinforced plastic formed in a hollow cylinder shape. Since a ring member made of a rubber-like elastic material is interposed between the tip of the hosel and the tip of the shaft, the tip of the shaft is made of a metal hosel, a metal head, or another club head. Since it does not contact the shaft, the outer peripheral surface of the shaft tip is scratched and the surface layer of the material is effectively prevented, while the ring member corrects the step at the connection between the shaft tip and the hosel tip. It has the effect of improving the appearance.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a connecting portion between a shaft tip and a hosel of an over hosel type putter in which the present invention is implemented, FIG. 2 is a front view of a conventional over hosel type putter, and FIG. 3 is FIG. FIG. 3 is a sectional view taken along line III-III of FIG. 1 ... putter head, 2 ... hosel part, 3 ... shaft, 5
… Ring member, X… Connection between shaft tip and hosel.

Claims (1)

[Scope of utility model registration request] 1. A putter in which a tip of a hosel portion formed integrally with a putter head is inserted into and attached to a tip of a shaft made of a fiber-reinforced plastic formed in a hollow cylindrical shape, and the hosel portion of the hosel portion is provided. A putter characterized in that a ring member made of a rubber-like elastic body is interposed between a connecting portion between the tip and the tip of the shaft.