WO2022205758A1

WO2022205758A1 - Multi-linkage handle for circuit breaker

Info

Publication number: WO2022205758A1
Application number: PCT/CN2021/114978
Authority: WO
Inventors: 刘锋
Original assignee: 英特曼电工（常州）有限公司
Priority date: 2021-03-31
Filing date: 2021-08-27
Publication date: 2022-10-06
Also published as: EP4089708B1; EP4089708A1; CN214542093U; EP4089708C0

Abstract

The utility model relates to a multi-linkage handle for a circuit breaker, comprising a first handle, the middle part of which is linked with a hinged linkage shaft hingedly connected to a shell of the circuit breaker, wherein the hinged linkage shaft is linked with a hidden handle with respect to the other end of the linked first handle, an intermittent linkage mechanism is provided between the hidden handle and the first handle, and the hidden handle can realize intermittent linkage with the first handle by means of the intermittent linkage mechanism. The utility model has the following beneficial effects: provided is a multi-linkage handle for a circuit breaker, which can realize one handle to control a two-phase circuit breaker operating mechanism, reduce the operation handle and save space.

Description

A multi-link handle for a circuit breaker

technical field

The utility model relates to the technical field of circuit breakers, in particular to a multi-linkage handle for circuit breakers.

Background technique

Residual current circuit breaker (RCBO), also known as residual current circuit breaker and residual current protector, is mainly used to protect the circuit or motor from overload or short circuit in the event of leakage fault of equipment and electric shock protection for persons with fatal danger. It can also be used for infrequent switching of the line under normal circumstances. The leakage protection circuit breaker generally includes a casing, and the circuit breaker device and the leakage protection device are distributed in the casing. The circuit breaker device is used to control the on-off of the moving contact and the static contact during short circuit, overload or infrequent starting of the line. , and the leakage protection device is used to control the on-off of moving contacts and static contacts when leakage occurs.

Both the circuit breaker device and the leakage protection device are provided with handles, and when the circuit breaker is equipped with two or more phases, the number of handles increases accordingly. In the prior art, generally one handle controls the operation of a group of circuit breakers. The mechanism, on the one hand, increases the number of handles, on the other hand, when the circuit breaker has multiple phases, it is difficult to achieve synchronous manual control, and it must be closed one by one, which is cumbersome to operate.

Utility model content

The technical problem to be solved by the utility model is to provide a multi-link handle for circuit breaker, which can realize the control of the two-phase circuit breaker operating mechanism by one handle, reduce the number of operating handles and save space.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a multi-linkage handle for circuit breakers, comprising a first handle, the middle of the first handle is linked with a hinged linkage shaft hinged on the circuit breaker housing, characterized in that , the hinged linkage shaft is linked with a hidden handle relative to the other end of the linkage first handle, an intermittent linkage mechanism is arranged between the hidden handle and the first handle, and the hidden handle can be connected with the first handle through the intermittent linkage mechanism The handle realizes intermittent linkage.

By adopting the above technical solution, compared with the handle in the prior art, by improving the handle structure, a first handle, a hidden handle and an intermittent linkage mechanism are provided, and the multi-phase circuit breaker can be controlled by controlling the first handle, so that one handle can control two The phase circuit breaker operating mechanism reduces the number of operating handles, simplifies the structure, and saves installation space.

The above-mentioned multi-linkage handle for a circuit breaker can be further configured as follows: the intermittent linkage mechanism includes a second handle sleeved on the outer periphery of the hidden handle, the second handle is provided with an intermittent linkage area, and the hidden handle corresponds to The intermittent linkage area is provided with a bump, and the intermittent linkage mechanism further includes a connecting component arranged between the first handle and the second handle, and the first handle can drive the second handle to realize synchronous operation through the connecting component.

By adopting the above technical solution, the second handle can work synchronously with the first handle through the connection assembly, so that one handle can control the two-phase circuit breaker, and further through the intermittent linkage area and the cooperation relationship between the two bumps, the circuit breaker device can be realized. Intermittent linkage with the leakage protection device is realized according to the actual situation; for example, if no leakage occurs, when the circuit breaker device is opened normally, the intermittent linkage area rotates in the effective rotation direction, and the bump does not occur in the intermittent linkage area at this time. contact until the second handle rotates following the first handle until the end of the intermittent linkage area is close to the bump; once an abnormal situation such as leakage occurs, the leakage protection device works to hide the handle and push the end of the intermittent linkage area through the bump , and then the second handle drives the first handle to rotate, the closing is completed, and the circuit is protected.

The above-mentioned multi-linkage handle for a circuit breaker may be further configured as follows: the connecting assembly includes a connecting rod whose two ends are respectively fixedly connected to the first handle and the second handle.

With the above technical solution, the purpose of the coupling rod is to realize synchronous linkage between the first handle and the second handle.

The above-mentioned multi-linkage handle for a circuit breaker may be further configured as follows: an indicator block is provided on the outer periphery of the first handle.

By adopting the above technical solution, the indicating block can perform an indicating function for opening and closing, which is convenient for people to observe.

The present utility model will be described in further detail below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

2 is a schematic diagram of the second handle in the embodiment of the present invention;

3 is a schematic diagram of a hidden handle in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a first handle in an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1 to 4, a multi-linkage handle for a circuit breaker includes a first handle 1, and the middle of the first handle 1 is linked with a hinged linkage shaft 2 hinged on the circuit breaker casing (the linkage shaft 2 is the casing The handle fixing shaft protruding above), the hinged linkage shaft 2 is linked with a hidden handle 3 relative to the other end of the linkage first handle 1, and an intermittent linkage mechanism is arranged between the hidden handle 3 and the first handle 1, The hidden handle 3 can be intermittently linked with the first handle 1 through an intermittent linkage mechanism. The intermittent linkage mechanism includes a second handle 4 sleeved on the outer periphery of the hidden handle 3 , the second handle 4 is provided with an intermittent linkage area 41 , and the hidden handle 3 is provided with a protrusion corresponding to the intermittent linkage area 41 . 31. The intermittent linkage mechanism further includes a connecting component disposed between the first handle 1 and the second handle 4, and the first handle 1 can drive the second handle 4 to achieve synchronous operation through the connecting component. The connecting assembly includes a connecting rod 5 whose two ends are relatively and fixedly connected with the first handle 1 and the second handle 4 respectively. The outer periphery of the first handle 1 is provided with an indicator block 6 .

Working principle: There is no leakage, etc. When the circuit breaker device is normally opened, the first handle 1 is pushed along its effective rotation direction, and the first handle 1 drives the second handle 4 to rotate through the connecting rod 5. At this time, the bump 31 does not interact with the intermittent When the interlocking area 41 comes into contact, the hidden handle 3 does not work, so the leakage protection device in the circuit breaker does not work. When the second handle 4 follows the rotation limit of the first handle 1, the end of the intermittent interlocking area 41 is in contact with the convex The block 31 is close; when an abnormal situation such as leakage occurs, the leakage protection device works to drive the hidden handle 3 to rotate in the opposite direction of the effective operation of the first handle 1, and the bump 31 pushes the end of the intermittent linkage area 41, and then the second handle 4 Following the rotation of the hidden handle 3, the connecting rod 5 drives the first handle 1 to rotate, the closing is completed, and the circuit is protected. Compared with the existing handle, by improving the handle structure, a first handle 1, a hidden handle 3, and an intermittent linkage mechanism are provided, and the multi-phase circuit breaker can be controlled by controlling the first handle 1, so that one handle can control the operating mechanism of the two-phase circuit breaker. , reduce the number of operating handles, simplify the structure, and save installation space.

Claims

A multi-linkage handle for a circuit breaker, comprising a first handle, a hinged linkage shaft hinged on the circuit breaker casing is linked in the middle of the first handle, and characterized in that: the hinged linkage shaft is relative to the other side of the first handle. One end is linked with a hidden handle, an intermittent linkage mechanism is arranged between the hidden handle and the first handle, and the hidden handle can be intermittently linked with the first handle through the intermittent linkage mechanism.
The multi-link handle for circuit breakers according to claim 1, wherein the intermittent linkage mechanism comprises a second handle sleeved on the outer periphery of the hidden handle, and the second handle is provided with an intermittent linkage area, so The hidden handle is provided with a protrusion corresponding to the intermittent linkage area, and the intermittent linkage mechanism further includes a connecting component arranged between the first handle and the second handle, and the first handle can drive the second handle through the connecting component. To achieve synchronous work.
The multi-link handle for a circuit breaker according to claim 2, wherein the connecting assembly comprises a connecting rod whose two ends are respectively fixedly connected to the first handle and the second handle.
The multi-linkage handle for a circuit breaker according to claim 1, 2 or 3, wherein an indicator block is provided on the outer periphery of the first handle.