JPS6237660Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a rod-shaped handle for various instruments that cause vibration, and contributes to reducing the transmission of vibration to the user and preventing the occurrence of problems caused by vibration. .

Various types of pneumatic or electrically powered instruments that involve vibration, such as roughers in stone processing, hammers for engraving, scaling hammers used to remove rust from boilers, and road construction. In order to reduce the transmission of vibrations to the user, the handle of the excavator is equipped with a rubber cover, but these methods are insufficient.

In this case, a pipe-shaped metal body having a hollow space for supplying air for operating the instrument is divided into two parts, and these parts are arranged at a slight interval in the axial direction, and the parts are arranged at a distance from each other in the axial direction. The ends are connected to each other by a coiled spring, a ring-shaped band for preventing air leakage is fitted around the outer periphery of the spring at the connecting part, and the main body, spring and band are made of an elastically deformable material such as rubber. The object of the present invention is to provide a handle for an instrument that vibrates and is covered with a cover made of aluminum.

The present invention will be described with reference to an embodiment of the handle of the pneumatically powered instrument shown in Figure 1 of the drawings.
1 is a rod-shaped body made of pipe-shaped metal,
These have two pipes, front 1A and rear 1B.
They are arranged in a slightly spaced manner in the axial direction. 2 is the front part 1A and rear part 1B of the main body
The ends of the front part 1A and the rear part 1B are inserted into the spring 2 and fixed therein. The body 1 and the spring 2 can be fixed by any means such as welding, but it is possible to fix the body 1 and the spring 2 easily and firmly by providing a spiral groove on the outer peripheral surface of the end of the body 1 and engaging the spring 2 with it. Can be fixed. 3 is a cover made of an elastically deformable material such as rubber that covers almost the entire length of the main body 1, and 4 is a front part 1A and a rear part 1B of the main body.
A ring-shaped metal band is placed around the outer periphery of the spring 2 to cover the gap between the cover 3 and the cover 3. This is a ring-shaped metal band that is placed around the outer periphery of the spring 2 to cover the gap between the cover 3 and the cover 3. This is to prevent any influence on the cover 3, and is unnecessary if the strength of the cover 3 is increased. 5 is a mounting portion formed at the end of the front portion 1A for attaching the handle to the instrument; 6
is the air hose connection. The band 4 can also be provided on the outer peripheral surface of the cover 3.

The lengths of the front part 1A and rear part 1B of the main body are not particularly limited, but since the rear part 1B is held during use, it is suitable for use to make the rear part 1B long. The spring 2 is strong enough to connect the front part 1A and rear part 1B of the main body and use them as an integrated handle.

This handle, as illustrated in Figures 2 and 3,
It is attached to the instrument 7 via the attachment part 5, and is used by holding the rear part 1B of the main body, that is, the part opposite to the instrument 7 from the spring 2. Front part 1 of main body
Since A is attached to the instrument 7, the vibrations of the instrument 7 directly act on the front portion 1A. However, the rear part 1B of the main body held by the user is different from the front part 1B.
Since they are separated from A and connected by springs 2 with a slight interval between them, the rear part 1B can be bent in any direction with respect to the front part 1A by elastic deformation of the springs 2. At this time, the opposing surfaces of the front part 1A and the rear part 1B do not connect with each other, and the vibrations of the instrument 7 relative to the rear part 1B of the main body are transmitted via the spring 2. Therefore, since the spring 2 temporarily absorbs the vibration energy transmitted from the instrument 7 to the front part 1A of the main body, the vibration transmitted to the rear part 1B is reduced, contributing to the prevention of vibration problems for the user of the instrument 7. and the instrument 7 is easy to use.

In the example shown in Figure 1, almost the entire outer periphery of the pipe-shaped main body 1 is covered with a cover 3 to prevent the air inside the main body 1 from leaking out, but the cover 3 is also made of rubber or other material that can be elastically deformed. Because it is made of materials,
The vibration of the instrument 7 against the rear part 1B of the main body can be reduced, and the use of the instrument 7 can be made easier. A ring-shaped band 4 is arranged around the outer circumference of the spring 2, and the main body 1 is
This band 4 prevents the cover 3 from expanding due to the air pressure inside, but since this band 4 is only placed around the outer periphery of the spring 2 and has no effect on the elastic deformation of the spring 2, it prevents the vibration to the rear part 1B of the main body. You can definitely make it smaller.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a sectional front view, and FIGS. 2 and 3 are front views of an example of use. 1: Main body, 2: Spring, 3: Cover.

Claims (1)

[Scope of utility model registration request] A pipe-shaped metal body having a hollow space for supplying air for operating the instrument is divided into two parts, and these parts are arranged at a slight distance in the axial direction of the main body. The connected ends are connected to each other by a coiled spring, and a ring-shaped band for preventing air leakage is fitted around the outer periphery of the spring at the connecting part, and the main body, the spring, and the band are made of elastically deformable material such as rubber. A handle for an instrument that vibrates and is covered with a cover made of material.