JPH01210255A - Air grinder - Google Patents

Abstract

PURPOSE:To ensure safe work without lowering of work efficiency and to prevent an accident by providing a stopper on a valve lever portion and constructing an air grinder in such a manner that it is rotated by two-step operation comprising pulling a lever toward an operator and pushing same, and if it is released, the grinder is returned to a lock state. CONSTITUTION:A spring 5 built in a valve lever 2 is repulsed by a receiving plate 4, so that the valve lever 2 is moved in the direction of an arrow B within the range S of an elongated hole 2b. In such a state, a jaw 2a portion of the valve lever 2 is stranded on a stopper portion 1a of a main body 1. Accordingly, a switch 6 can not be pressed so that a rotary grinder is kept in a stopping state. In case of starting the rotary grinder, when the valve lever 2 is moved in the direction of an arrow A within the range S, the jaw portion 2a is separated from the stopper portion 1a, so that the switch 6 can be pressed down to start the grinder. Thus, the valve lever 2 can not be operated only by pushing, so that an error in operation of the rotary grinder can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air grinder, and more particularly to an air grinder suitable for preventing malfunction due to lever operation.

[Conventional technology]

As shown in FIG. 3, the conventional air grinder uses the bin 3 of the valve lever 2 as a fulcrum, and the valve lever 2
Just by pressing , the switch 6 is pressed and the main body 1 is started.

7 is an air hose.

[Problem to be solved by the invention]

The above-mentioned conventional technology does not take safety into account because there is a risk that the main body 1 will rotate if the valve lever 2 is touched while trying to hold the main body 1 or if the valve lever 2 is touched by mistake when attaching or detaching the air hose 7. There wasn't.

An object of the present invention is to provide an air grinder that does not impair the ease of operation and does not rotate simply by pressing the valve lever.

[Means to solve the problem]

” The purpose of the second part is to create an air grinder that rotates with compressed air and has a lever and spring attached to the main body of the grinder.
A stopper is provided on the valve lever, and the lever rotates in two steps: pulling it toward you and then pushing it.
Release is achieved by returning to the original locked state.

[Effect]

Since the valve lever 2 moves in the direction A through the elongated hole 2b until it touches the receiving plate 4, the jaw 2a of the valve lever comes off the stopper 1a of the main body 1 and the switch 6 can be pressed.

When stopping, the spring 5 built into the half lever is repelled by the receiving plate 4, and the valve lever 2 automatically moves in the direction B, and the jaw 2a of the valve lever rises above the stopper 18, so even if it accidentally comes into contact. It never rotates.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 and 2.

1 and 2 are side views of the rotary grinder.

In FIGS. 1 and 2, a valve lever 2 is held on the main body by a pin 3, which operates a switch 6 to cut off the supply of air supplied from an air hose 7. The spring 5 built in the above-mentioned palf lever 2 is connected to the receiving plate 4.
The valve lever 2 moves in the B direction to the S of the elongated hole 2b.
It is moved within the range of. In this state, the jaw 2a of the valve lever rests on the bottom bar 1a of the main body 1, so the switch 6 cannot be pressed, and the rotary grinder is in a stopped state.

When starting the rotary grinder, use the half lever.
2 in the A direction within the range of S, the jaw 2a section will slide
It can be removed from the tab 1a and the switch 6 can be pressed down to start the operation.

As described above, according to the present invention, the valve lever 2 is of a locking type that cannot be activated simply by pushing it, so there is no possibility of malfunction.

〔Effect of the invention〕

According to the present invention, the structure of the valve lever part allows the lock to be released and the rotary grinder to be started with a simple continuous operation, and when the hand is released, it automatically returns to the original locked state, which is different from the conventional one. It does not reduce work efficiency compared to other structures, and is effective in ensuring safe work and preventing accidents.

[Brief explanation of the drawing]

1 and 2 are side views of the air grinder of the present invention, and FIG. 3 is a side view of a conventional air grinder. 1. Main body, 2. Valve lever, 3.. Pin, 4.. Receptacle plate, 5.. Spring, 6. Switch, 7. Air hose. Representative Patent Attorney Katsutoshi Ogawa Figure 1 Audience 3

Claims (1)

[Claims] 1. In an air grinder that is equipped with a lever and a spring on the grinder body that rotates with compressed air, a stopper is provided on the valve lever part, and the lever rotates in a two-step operation of pulling it toward you and then pushing it. An air grinder that is characterized by returning to a locked state.