JPS625823Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention mainly relates to a gun arm device for a portable resistance welding gun.

Conventionally, this type of device includes a gun arm body having an electrode holder at the tip and a support member at the tail end, and a conductor connecting the holder and a secondary conductor terminal behind the holder, and a water passage for cooling. Further, in this type, the main body is formed into a cylindrical body made of a relatively thin plate material, and the conductor is placed inside the main body, as seen in, for example, Japanese Utility Model Publication No. 57-24455. There are known types of pipes that are constructed of copper pipes that also serve as the water passage; This is accompanied by inconveniences such as difficulty in obtaining current carrying capacity.

The purpose of the present invention is to obtain a device free of such inconveniences, and an electrode holder 1 is provided at the tip.
and a gun arm main body 3 having a support member 2 at the tail end, a conductor 5 for connecting the holder 1 and a secondary conductor terminal 4 behind it, and a water passage 6 for cooling. In this case, the gun arm main body 3 is made of a relatively thin plate material having a U-shaped cross section and an opening 7 on one side, and the water passage 6 is formed inside the conductor 5 by a groove-shaped or other conducting hole. It is composed of a relatively thick plate-like body having a shape, which is fitted into the opening 7 and bonded by welding or other means.

FIGS. 1 to 5 show one example. In this case, the water passage 6 consists of a pair of inflow and outflow sides, which are arranged in the form of grooves on each side of the conductor 5 on the left and right sides. I decided to make it. The main body 1 is made of, for example, magnetic carbon steel, and the conductor 5 is generally made of a copper alloy with good conductivity. The conductor 5 may be of a type in which a portion 5a thereof protrudes outward in the form of a wide flange, for example as shown in FIG. It is possible to use a type in which the water pipe 6a is inserted separately into the groove.

In this way, according to the present invention, the conductor 5 is constructed of a relatively thick plate-like body, and the water passage 6 is formed in the form of a groove or the like, and a large current carrying capacity can be obtained. Furthermore, the conductor 5 is fitted into and bonded to an opening 7 on one side of a member having a U-shaped cross section constituting the main body 1, and is effective for reinforcing the main body 1 at the opening 7. and thus the body 1
It has the effect of increasing the strength of the material.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view of an example of the device of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a rear view thereof.
Figures 4 and 5 are the - and - lines in Figure 1.
The cutaway sectional view, FIGS. 6 and 7 are sectional views of each modification. DESCRIPTION OF SYMBOLS 1... Electrode holder, 2... Supporting member, 3... Gun arm main body, 4... Secondary conductor terminal, 5... Conductor, 6... Water passage, 7... Opening.

Claims (1)

[Scope of utility model registration request] Electrode holder 1 at the tip and support member 2 at the tail end
A conductor 5 that connects the holder 1 and the secondary conductor terminal 4 behind the gun arm body 3 has a
and a cooling water passage 6, the gun arm main body 3 is made of a relatively thin plate material and has a U-shaped cross section with an opening 7 on one side, and the conductor 5 is The water passage 6 inside
A gun arm device for a resistance welding gun, which is constructed of a relatively thick plate-like body having a concave groove or other guiding hole shape, which is fitted into the opening 7 and connected by welding or other means.