JPH05106616A - Mounting method for grip - Google Patents

Abstract

PURPOSE:To facilitate mounting and demounting of a shaft to and from the insertion hole of the grip in a grip-mounting method for a handle section, etc., of tooling, by closing the opening of the blind-hole like insertion hole of the grip by an end face of the mounting shaft, and supplying a compressed air into the insertion hole to enlarge the diameter of the insertion hole and mounting/demounting the mounting shaft. CONSTITUTION:A large-diameter portion end is forced into an end opening of a shaft insertion hole 5 of a grip 2 to close the end opening. On the other hand, a normally closed type three-port valve 10 is mounted in a strap attachment hole 6 of the grip 2, and a compressed air is supplied into the shaft insertion hole 6 of the grip 2. As a result, the pressure in the insertion hole 5 closed by the large-diameter end of the shaft 1 rises, so that the inner diameter of the insertion hole 5 is enlarged. Accordingly, the shaft 1 can be easily mounted to or demounted from the grip 2. The three-port valve 10 is constructed such that a main body 11 thereof is provided, at one end of its outer periphery, with an insertion portion 25 being fitted into the strap attachment hole 6, the insertion portion 25 being provided, at, its fore end, with an out port 26 communicated with a screw insertion hole 7 formed in the bottom wall of the strap attachment hole 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a grip attached to a shaft end portion of a ski pole, a shaft end portion of a golf club, a handle portion of various tools or the like.

[0002]

2. Description of the Related Art Generally, in a ski pole, a grip is attached to the end of a shaft. The grip is connected by a plug on the shaft end.
For this reason, the grip is formed with an insertion hole into which the end of the shaft is inserted, and the inner surface of the insertion hole serves to stabilize the grip when it is attached by the binding force that tightens the outer diameter surface of the shaft.

Therefore, the inner diameter of the insertion hole is smaller than the outer diameter of the shaft. Further, the grip is formed of a material having a relatively soft elasticity such as rubber or synthetic resin in order to improve the grip condition.

Not only the grip of the ski pole but also the grip of the golf club and the grip to be attached to the tools are the same as those described above, and the grip is attached by a manual insertion method.

[0005]

By the way, the manual insertion method requires a very large force because the contact resistance between the inner circumference of the insertion hole and the outer diameter surface of the grip mounting shaft is large, and the grip is flexible. Since it is flexible, it often deforms during insertion, and it takes a lot of time to mount it.

The present invention has a technical object of facilitating attachment and detachment of a grip.

[0007]

In order to solve the above-mentioned problems, in the present invention, the opening of a blind hole-shaped insertion hole formed in the grip is closed by the end surface of the grip mounting shaft, and the inside of the grip insertion hole is closed. The compressed air is supplied to the shaft, the diameter of the insertion hole is expanded, and the grip and the grip mounting shaft are relatively pressed.

[0008]

[Function] When the grip and the grip mounting shaft are pushed in relative to each other, the compressed air supplied to the insertion hole leaks to the outside through the opening of the insertion hole, and an air film is formed between the outer surface of the grip mounting shaft and the inner surface of the insertion hole. Is formed. The air film causes the grip to be inserted in a non-contact state with the grip mounting shaft.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. In this embodiment, a grip 2 is attached to a shaft 1 of a ski pole.

As shown in FIGS. 1 to 3, the shaft 1 has a tapered shape that narrows toward the front, and a hole 4 is provided in a plug body 3 that closes the opening of the large diameter end.

On the other hand, the grip 2 has an insertion hole 5 into which the large-diameter end portion of the shaft 1 is inserted, and a strap attachment hole 6 opening at the outer peripheral surface of the rear end portion. Screw insertion holes 7 are formed in the upper and lower walls. Also,
The grip 2 is made of an elastic material such as rubber or plastic.

The grip 2 is attached to the outside of the large-diameter end of the shaft 1. At the time of mounting, compressed air is supplied into the insertion hole 5 of the grip 2 and fitted to the outside of the shaft 1 in a state where the inner diameter of the insertion hole 5 is expanded.

When supplying compressed air, the end opening on the shaft insertion side is closed by the large diameter end of the shaft 1, and compressed air is supplied from the screw insertion hole 7 formed in the lower wall of the strap mounting hole 6.

In order to facilitate the supply of compressed air as described above, the normally closed three-port valve 10 is used in this embodiment.

5 and 6 show details of the 3-port valve 10. In this three-port valve, an import 12, an air supply chamber 13, a valve hole 14, an exhaust chamber 15 and a valve rod insertion hole 16 are sequentially provided from one end face of the valve body 11 toward the other end, and the exhaust chamber 15 is provided with the valve hole. Small diameter chamber 15a communicating with 14 and valve rod insertion hole 1
6 and a large-diameter chamber 15b communicating with 6, and an exhaust port 17 is provided in communication with the large-diameter chamber 14b.

Further, a valve body 18 for opening and closing the valve hole 14 and a spring 19 for pressing the valve body 18 in the direction of closing the valve hole 14 are incorporated in the air supply chamber 13.

Further, the valve rod 20 is slidably inserted into the valve rod insertion hole 16, and a valve body 21 is provided in a portion of the valve rod 20 located inside the exhaust chamber 15, and the valve body 21 has the large diameter described above. The spring 23, which presses the valve rod 20 in the direction away from the valve seat 22 formed between the chamber 15b and the small diameter chamber 15a, is attached to the small diameter chamber 15a.
It is built in. A push button 24 is provided at the end of the valve rod 20 that projects outward from the valve body 11, and the push button 24 pushes the valve body 18 to open the valve hole 14.

An insertion portion 25 which can be fitted into the strap attachment hole 6 is provided on one side of the outer periphery of the valve body 11, and an out port 26 formed on the lower surface of the tip of the insertion portion 25.
The small diameter chamber 15a and the small diameter chamber 15a communicate with each other through a passage 27.

When the diameter of the insertion hole 5 of the grip 2 is expanded by using the 3-port valve 10 having the above structure, the insertion portion 25 is inserted into the strap attachment hole 6 of the grip 2 as shown in FIG. .. With its insertion, the outport 26
Is a screw insertion hole 7 formed in the bottom wall of the strap mounting hole 6.
Communicate with.

In the mounted state of the 3-port valve 10 as described above, the end portion of the shaft 1 is inserted into or abuts the opening of the insertion hole 5, and the end surface of the shaft 1 closes the opening of the insertion hole 5.
On the other hand, when the opening of the small diameter end of the shaft 1 is closed and the push button 24 is pushed in, the valve rod 20 pushes the valve element 18, so the valve hole 14 is opened as shown in FIG. 4, and the compressed air supplied to the import 12 is released. The small-diameter chamber 15 a of the air supply chamber 13, the valve hole 14 and the exhaust chamber 15 flows into the passage 27 and then flows into the insertion hole 5 from the out port 26.

Therefore, the internal pressure of the insertion hole 5 gradually increases, and the increase of the pressure expands the diameter of the insertion hole 5. Therefore, by pushing the grip 2 and the shaft 1 relatively, the grip 2 can be attached to the outside of the large-diameter end of the shaft 1.

In the attachment of the grip 2 as described above, the compressed air supplied to the insertion hole 5 forms an air film between the inner periphery of the insertion hole 5 and the outer diameter surface of the shaft 1, and the excess compressed air is replaced by the insertion hole. It leaks to the outside through the opening of 5.

By forming the air film, the inner circumference of the insertion hole 5 and the outer diameter surface of the shaft 1 are held in non-contact with each other. on the other hand,
The air pressure of the compressed air supplied to the insertion hole 5 resists the relative pushing of the grip 2 and the shaft 1.
The grip 2 can be attached to the outside of the shaft 1 by applying a pushing force of a magnitude that overcomes the resistance.

FIG. 3 shows a state in which the grip 2 is attached to the outside of the shaft 1. In the attached state, when it is necessary to adjust the orientation of the grip 2, the grip 2 and the shaft 1 are rotated relatively. Move. At the time of the rotation, since the inner periphery of the insertion hole 5 is held in a non-contact state with the outer diameter surface of the shaft 1 by the air film, the grip 2 and the shaft 1 are rotated with a relatively light force. The grip 2 can be easily adjusted.

When the pressing of the push button 24 is released after the grip 2 is attached, the valve body 18 closes the valve hole 14 and the supply of compressed air to the insertion hole 5 is cut off. At this time, since the valve body 21 separates from the valve seat 22, the compressed air remaining in the passage 27 or the shaft 1 flows into the exhaust chamber 15 and leaks from the exhaust port 17 to the outside.

In the case of the embodiment, compressed air was supplied into the insertion hole 5 by using the 3-port valve 10. However, an air pipe was inserted into the screw insertion hole 7 and compressed into the insertion hole 5 from the air pipe. Air may be supplied.

When the compressed air is supplied, the screw insertion hole 7 may be closed and the compressed air may be supplied into the insertion hole 5 through the opening of the small diameter end of the shaft 1.

In the embodiment, the attachment of the grip 2 of the ski pole has been described as an example, but the grip is not limited to this and may be, for example, a grip of a golf club or a grip attached to a handle of a tool.

When removing the grip 2, compressed air is supplied into the insertion hole 5 to expand the diameter of the insertion hole 5 and pull up the grip 2 in the same manner as described above.

[0030]

As described above, in the grip mounting method according to the present invention, the grip insertion hole is closed at the end of the grip mounting shaft such as the shaft to which the grip is mounted, and the compressed air is inserted into the insertion hole. The grip and the grip mounting shaft are relatively pushed in while the insertion hole is expanded, so that the grip can be attached very easily.

Further, when compressed air is supplied to the insertion hole when removing the grip, an air film is formed between the inner periphery of the insertion hole and the grip mounting shaft, and the compressed air accumulated in the insertion hole pushes up the grip. The grip can be easily removed as it acts on the.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a grip attached by a method according to the present invention, a shaft, and a three-port valve used for carrying out the method.

FIG. 2 is a cross-sectional view showing a state before attaching the grip.

FIG. 3 is a sectional view showing a state after attaching the grip.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a partially cutaway plan view of the above three-port valve.

FIG. 6 is a partially cutaway front view of the above.

[Explanation of symbols]

 1 Shaft 2 Grip 5 Insertion hole

Claims (1)

[Claims] 1. A grip and a grip by closing the opening of a blind hole-shaped insertion hole formed in the grip with an end surface of a grip mounting shaft, supplying compressed air into the insertion hole of the grip, and expanding the diameter of the insertion hole. A grip mounting method in which the mounting shaft is pushed in relatively.