JPH0312461Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gun handle case for semi-automatic arc welding.

When using this type of semi-automatic arc welding gun, an operator grasps the handle case of the welding gun and welds joints of various shapes in various welding positions. In this case, the worker wears leather gloves, holds the handle case of the welding gun with one hand, and operates the trigger switch provided on the bottom of the handle case with the index or middle finger. The welding gun must be operated by the operator so that the welding wire fed through the welding line is aimed at the proper angle at the welding line to be welded.

Therefore, the following drawbacks are pointed out in conventional welding guns.

(1) Since the welding gun is held with hands wearing leather gloves, it is necessary to keep gripping it strongly enough to hold the welding gun in the hand, which increases fatigue during work.

(2) During welding, if you hold the welding gun with sufficient force to always aim the wire at the target area, and also manipulate the direction of the welding gun while overcoming the rigidity and weight of the conduit and power cable, the welding will be difficult. This makes the aim vague and has a negative effect on welding quality.

The present invention is intended to solve the above-mentioned drawbacks, and its purpose is to provide a gun handle case that allows an operator to easily and accurately control the direction of a welding gun.

Another object of the present invention is to provide a gun handle case that can be easily held in the hand in order to improve welding work efficiency and reduce operator fatigue.

In this invention, in order to achieve the above purpose,
In a longitudinal cylindrical semi-automatic arc welding gun handle case body having a trigger switch, in which a protrusion is provided protrudingly, the lower edge of the protrusion is attached to the upper surface area on the opposite side of the trigger switch. The protrusion is provided in the longitudinal direction of the handle case body, and the protrusion is inclined rearward at an angle of 40° to 90° with respect to the cross section along the length direction of the handle case body, and the protrusion is provided in the longitudinal direction of the handle case body. The side surface facing the vertical cross section along the .

The illustrated embodiment will be described below with reference numeral 1.
1 shows a handle case body 1 having a long cylindrical shape. A torch 2 is attached to the front surface of the main body 1, a cable 3 is housed on the rear surface thereof, and a trigger switch 4 is further attached to the lower surface of the main body 1. In this way, the structure is not different from the conventional one, but in the present invention, the protrusion 5 provided protrudingly on the handle case body 1
As shown in FIG. 2, the lower edge 5a of the handle case body 1 is provided in a part of the upper surface area opposite to the trigger switch 4, and in a cross section along the length direction of the handle case body 1, that is, along the line X-X in the drawing. The inner surface 5c of the protrusion 5 is tilted rearward at an angle α of 40° to 90° with respect to a plane perpendicular to the plane of the paper along which the protrusion 5 is attached, i.e., the vertical cross section along the length direction of the handle body 1 shown in FIG. (Y-Y in the drawing
The surface perpendicular to the paper surface along the line is the curvature R
Furthermore, a finger grip 6 is provided in the length direction of the handle case body 1 and in the same line as the trigger switch 4. The protrusion 5
A raised edge 5b around the inner surface 5c is formed so as to continue from the top of the protrusion 5 to one side of the handle case body 1.

In addition, the protrusion 5 is provided at a position where it can come into contact with either the right or left hand with a good fit so that it can be conveniently handled whether the welder is right-handed or left-handed. ing. Furthermore, the protrusion 5 is formed of heat-resistant and insulating synthetic resin, such as glass fiber-filled polyester or polycarbonate, so that it can be molded integrally with the handle case body 1.

In this way, according to the present invention, the lower edge 5a of the protrusion 5 provided protrudingly on the handle case body 1 is
It is provided in a part of the upper surface area on the opposite side of the trigger switch 4, and the protrusion 5 is inclined rearward at an angle of 40° to 90° with respect to the cross section along the length direction of the handle case body 1. The side surface 5c of the protrusion 5 facing the longitudinal section of the handle case body 1 is formed into a curved surface, and the handle case body 1 is formed into a curved surface.
Since an uneven finger grip 6 is formed in the length direction of the case body 1 and in the same line as the trigger switch 4, when the operator grips the case body 1, the index finger comes into close contact with the protrusion 5. with the middle finger,
Since the ring finger and little finger are entangled with the unevenness of the finger grip 6, the welding gun is sufficiently fixed in the hand even if the operator does not have to grip it particularly strongly, making it difficult for the welding gun to fall out of the hand.
If you place it on the inner surface 5c of the torch, you can get a good feeling of fitting, and when twisting the welding gun toward the welding line, you can easily change the direction of the torch by pressing the protrusion 5 with your thumb. Compared to the case where the handle case body 1 is strongly gripped to change its direction, hardly any grip force is required and the welding target can be easily and reliably performed. In addition, even when gripping the handle case body 1 with the left hand, the thumb rests on the protrusion 5, providing a good feeling of fitting and making it easy to control the direction of the gun, regardless of the operator's dominant hand. There is an advantage that welding can be done easily and reliably. In this way, the operability of the gun is improved, grip strength is saved, and welding workability can be significantly improved.

In addition, since the projecting body of the present invention is integrally molded with the handle case using a heat-resistant and insulating synthetic resin, it is highly heat-resistant, lightweight, and can be manufactured at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, FIG. 2 is a front view of the main part, and FIG. 3 is a plan view of the main part. 1...Handle case body, 4...Trigger switch, 5...Protrusion, 5a...Lower edge, 5c...
...Side, 6...finger grips.

Claims (1)

[Claims for Utility Model Registration] 1. In a longitudinal cylindrical semi-automatic arc welding gun handle case body 1 having a trigger switch 4, a protrusion 5 is provided protrudingly from the lower edge of the protrusion 5. A portion 5a is provided on a part of the upper surface area on the opposite side of the trigger switch 4, and the protrusion 5 is arranged rearward at an angle of 40° to 90° with respect to a cross section along the length direction of the handle case body 1. Furthermore, the side surface 5c of the protrusion 5 facing the longitudinal section along the length direction of the handle case body 1 is formed into a curved surface, so that the side surface 5c of the protrusion 5 faces the longitudinal section of the gun handle case body 1 and the trigger switch. 4. A gun handle case for semi-automatic arc welding characterized by having an uneven finger grip 6 formed in the same line as 4. 2. The gun handle case for semi-automatic arc welding according to claim 1, wherein the protrusion 5 is provided at a position where it can come into contact with fingers of either the right hand or the left hand. 3. The gun handle case for semi-automatic arc welding according to claim 1, wherein the protrusion 5 is integrally molded with the handle case main body 1 from a heat-resistant insulating synthetic resin.