JPH0310598Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to the structure of a handle operating mechanism in a circuit or disconnection such as a wiring disconnector or an earth leakage disconnector.

[Prior art and its problems]

4 is a side view of a conventional handle operating mechanism, FIG. 5 is a front view taken in the direction of arrow Q in FIG. 4, and FIG. 6 is a front view of the handle in FIG. 5.

A round hole 2 and a crescent-shaped hole 3 are provided on opposite sides of the side plate 1 which is bent into a U-shape.
4 are provided, and each is provided with round pins 5 ₁ , 5 ₂ , and 5 ₃ spanning both sides. The handle lower part 6a of the handle part 6 is penetrated and pivoted by a round pin ₅₁ inserted into the round hole 2, and the link 7 fixed to the handle 6a and the claw 8 are connected to the round pin 5 inserted into the crescent hole 3. It is penetrated and supported at ₂ . Furthermore, a main spring 9 with a strong spring force, which opens and closes the main contacts (not shown) and serves as the driving force for the opening/closing mechanism, is hung across a portion of the side plate 1 and the round pin 5 ₃ inserted into the crescent hole 4. A handle spring 10 that acts so that the handle portion 6 indicates the trip position is attached to one of the side plates 1.
It is hung across the part and round pin 5 ₂ .

The handle operating mechanism section having such a structure has the following problems during assembly. In other words, the round pins 5 ₁ and 5 ₂ for arranging the handle operating mechanism parts as a partial assembly or moving them to the next process are on the side plate 1.
or the handle spring 10 may come off from the round pin ₅₂ . If the handle spring 10 comes off after the handle operating mechanism is assembled into the molded case 11 shown in FIG. 5, the handle operating mechanism must be removed from the molded case 11 again, which is a troublesome situation. To prevent the round pins from coming off, the round pin 5 ₃ on which the main spring 9 is hooked is placed on the inside surface of the mold case 11, and the two round pins 5 ₁ and 5 ₂ are placed on the inside surface of the mobile cover 12. However, these round pins 5 ₁ and 5 ₂ are easy to move in the axial direction, and when the mold cover 12 is placed on the mold case 11, the round pins 5 ₁ and 5 ₂ move to the left or right in the axial direction. There is also the problem that it is difficult to cover the mold cover 12 when it hits. However, mold case 11
The round pin ₅₃ , which is prevented from coming off on the inner surface thereof, is pressed against the upper part of the crescent hole 4 by the strong spring force of the main spring 9, so that it hardly moves in the axial direction.

If the handle spring 10 comes off or the round pins 5 ₁ and 5 ₂ come off in this way, it will be necessary to reassemble it, which will result in a lot of lost time.
There is also a disadvantage from a management perspective that the number of man-hours increases.

[Purpose of invention]

The object of this invention is to provide a handle operating mechanism that eliminates the above-mentioned drawbacks, is easy to assemble, and eliminates lost time due to reassembly during assembly.

[Key points of the idea]

The main point of this idea is to achieve the above objective by extending one of the horizontal parts at the bottom of the handle and bending it downward at a right angle to form a bent part, and this bent part has a function to prevent the two round pins from coming off. This prevents the spring from coming off and the round pin from falling off.

[Example of idea]

1 to 3 show an embodiment of this invention, and in the figures, the same parts as in the conventional apparatus are given the same reference numerals, and the explanation thereof will be omitted. In the figure, the difference from the conventional device is that one of the horizontal parts of the lower part of the handle 6a is extended and bent downward at a right angle. By using this bent portion 6b as a stopper to prevent the round pins 5 ₁ , _{5 2} from coming off, the round pins 5 ₁ , 5 ₂ can be shifted toward the bent portion 6b during assembly. ₂ becomes difficult to come off, and at the same time, the handle spring 10 also becomes difficult to come off. In addition, since the round pins 5 ₁ and 5 ₂ are moved toward the bent portion 6b, the mold cover 12 can be easily covered without hitting the round pins 5 ₁ and 5 ₂ .

[Effect of idea]

In this invention, one side of the horizontal part at the bottom of the handle is extended and bent downward at a right angle to form a bent part, which functions as a stopper to prevent the round pin from coming off. If you shift it to one side, the round pin will be difficult to remove, and at the same time, the handle spring will also not come off. In addition, in this state, the round pin cannot protrude toward the mold case side, so it is easy to cover the mold cover, which reduces the number of management steps during assembly and eliminates lost time.
Furthermore, one side of the mold cover can be removed (see Figure 2), making the cover shape simple.

[Claim for Utility Model Registration] A link and a claw are fixed to the lower part of the handle, a part of the lower part of the handle, the link and the claw are housed in a U-shaped side plate, and a part of the lower part of the handle and the link are housed in a side plate. In the handle operating mechanism part, which is supported by round pins provided across both opposing sides of the handle, one of the horizontal parts of the lower part of the handle is extended and bent downward at a right angle to form a bent part. A handle operation mechanism for a circuit breaker, characterized in that the two round pins are prevented from coming off by the bent portions.

[Brief explanation of the drawing]

Fig. 1 is a side view of a handle operating mechanism that is an embodiment of this invention, Fig. 2 is a front view taken in the direction of arrow P in Fig. 1, Fig. 3 is a front view of the handle part in Fig. 2, and Fig.
The figure is a side view of the handle operating mechanism section of the conventional device, FIG. 5 is a front view taken in the direction of arrow Q in FIG. 1, and FIG. 6 is a front view of the handle section in FIG. 5. 1: Side plate, 6: Handle part, 6a:
Lower part of the handle, 6a: bent part, 7: link,
8: Nail.