CN218957659U

CN218957659U - Tripping mechanism of residual current operated circuit breaker

Info

Publication number: CN218957659U
Application number: CN202223050625.8U
Authority: CN
Inventors: 张寅�; 卢权胜; 陈平; 赵海生; 吴碧如
Original assignee: Zhejiang Tengen Electric Co Ltd
Current assignee: Zhejiang Tengen Electric Co Ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-05-02
Anticipated expiration: 2032-11-17

Abstract

A trip mechanism for a residual current operated circuit breaker. The problem that the tripping mechanism of the current residual current operated circuit breaker applies force on a lever in the middle rather than directly on a linkage arm and influences the tripping efficiency is mainly solved. The method is characterized in that: the swing rod comprises a first rod (31) and a second rod (32), the release is matched with the first rod and used for driving the swing rod to rotate, and a release part is arranged on the second rod; the indicator is provided with a limiting part (41) and a linkage part (42); the linkage part is used for limiting and matching with the first rod when closing so that the indicator is in a contracted state; the linkage part is used for applying force to the second rod through the action of the elastic piece to accelerate tripping when the brake is opened. The utility model provides a tripping mechanism of a residual current operated circuit breaker, wherein a swinging rod of the tripping mechanism reduces the number of connecting rods and directly acts on a second rod provided with a linkage part, thereby being more beneficial to tripping.

Description

Tripping mechanism of residual current operated circuit breaker

Technical Field

The utility model relates to the field of electrical appliance switches, in particular to a tripping mechanism of a residual current operated circuit breaker.

Background

In the electronic residual current action protector, the residual current action function of the product is realized by directly driving a breaker part to act through a tripping mechanism of the leakage module, and the tripping module is required to act fast and have high energy in the action to ensure that the residual current action protector can be rapidly and accurately disconnected when the leakage occurs, thereby cutting off a fault power supply and protecting personal and equipment safety.

For example, chinese patent publication No. CN103456576a discloses a trip mechanism for tripping by using elastic force of an indicator, in which a latch is provided with three levers to act, a slot and a boss are required to be formed on the indicator, and the indicator is applied to a middle lever instead of directly applying force to a linkage arm, so that tripping efficiency is affected.

Disclosure of Invention

In order to overcome the defects of the background technology, the utility model provides a tripping mechanism of a residual current operated circuit breaker, which mainly solves the problem that the tripping efficiency is affected because the tripping mechanism of the current residual current operated circuit breaker applies force on a lever in the middle rather than directly on a linkage arm.

The technical scheme adopted by the utility model is as follows:

the tripping mechanism of the residual current operated circuit breaker comprises a shell, wherein a tripper and a rotatable swing rod are arranged in the shell, an indicator piece which is movably matched with the shell and an elastic piece which is matched with the indicator piece are also arranged on the shell, the swing rod comprises a first rod and a second rod, the tripper is matched with the first rod and is used for driving the swing rod to rotate, and a tripping part is arranged on the second rod;

the indicating piece is provided with a limiting part and a linkage part;

the linkage part is used for limiting and matching with the first rod when closing so that the indicator is in a contracted state;

the linkage part is used for applying force to the second rod through the action of the elastic piece to accelerate tripping when the brake is opened.

The first rod is provided with a linkage groove, the release comprises a release rod, and the release rod is matched with the inner wall of the linkage groove.

The limiting part is a side plate arranged on the indicating piece, and a limiting boss matched with the side plate is arranged on the first rod.

The indicator comprises supporting feet, the linkage part is a linkage rod arranged on the supporting feet, and the linkage rod is matched with the lower end face of the second rod.

The indicator comprises supporting feet, the linkage part is a linkage rod arranged on the supporting feet, a sinking groove is arranged on the second rod, and the supporting feet extend into the sinking groove to be matched with the inner wall of the sinking groove.

The elastic piece is a spring.

The shell is provided with a clamping rib, an accommodating groove is formed in the indicating piece, one end of the elastic piece is propped against the inner wall of the top of the accommodating groove, and the other end of the elastic piece is propped against the upper end face of the clamping rib.

The two ends of the clamping rib are provided with side wings, and ribs which are matched with the side wings in a blocking manner are arranged in the accommodating groove.

The indicator is provided with an open slot for exposing the side surface part of the spring.

The beneficial effects of the utility model are as follows: the utility model provides a tripping mechanism of a residual current operated circuit breaker, wherein a swinging rod of the tripping mechanism reduces the number of connecting rods and directly acts on a second rod provided with a linkage part, thereby being more beneficial to tripping.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present utility model.

Fig. 2 is a partial perspective view of an embodiment of the present utility model.

Fig. 3 is a partial perspective view of an embodiment of the present utility model.

Fig. 4 is a schematic perspective view of an indicator according to an embodiment of the present utility model.

Detailed Description

The utility model is further described below with reference to the accompanying drawings: as shown in the figure, the tripping mechanism of the residual current operated circuit breaker comprises a shell 1, wherein a tripper 2 and a rotatably arranged swinging rod 3 are arranged in the shell, an indicator 4 which is movably matched with the shell and an elastic piece 40 which is matched with the indicator are also arranged on the shell, the swinging rod comprises a first rod 31 and a second rod 32, the tripper is matched with the first rod and is used for driving the swinging rod to rotate, and a tripping part is arranged on the second rod; the indicator is provided with a limiting part 41 and a linkage part 42; the linkage part is used for limiting and matching with the first rod when closing so that the indicator is in a contracted state; the linkage part is used for applying force to the second rod through the action of the elastic piece to accelerate tripping when the brake is opened. Firstly, the linkage portion can be the tripping needle or the groove on the second rod, which is not described in detail in the prior art, when the switch-on is performed, the limiting portion is matched with the first rod to prevent the indication piece from jumping up, when the switch-off is performed, the first rod rotates and is not matched with the limiting portion, the indication portion jumps up under the action of the elastic piece, the linkage portion drives the second rod to rotate in an accelerating manner, the breaking is quicker, the middle end of the swing rod is provided with the hinge shaft, and the first rod and the second rod are arranged in two directions of the hinge shaft.

In this embodiment, as shown in the drawing, the first rod is provided with a linkage groove 311, and the release includes a release rod 21, and the release rod is matched with the inner wall of the linkage groove. The trip bar drives the linkage groove when stretching out and drawing back, and then makes the first pole rotate.

In this embodiment, as shown in the drawing, the limiting portion is a side plate provided on the indicator, and the first rod is provided with a limiting boss 312 matched with the side plate. The side plate is in limit fit with the limit boss during closing, and the indicating piece cannot jump up.

In this embodiment, as shown in the drawing, the indicator includes a leg 44, and the linkage portion is a linkage rod provided on the leg, and the linkage rod is matched with the lower end surface of the second rod. Can directly stretch into the lower terminal surface of second pole and drive, the structure is simpler.

In this embodiment, as shown in the figure, the indicator includes a leg 44, the linkage part is a linkage rod provided on the leg, a sink 321 is provided on the second rod, and the leg part extends into the sink to be matched with the inner wall of the sink. The sink is arranged at the position, and then the support legs are matched with the inner wall of the sink, so that the support legs are not required to be too long, and the structure is compact.

In this embodiment, as shown in the figure, the elastic member is a spring. The cost is lower.

In this embodiment, as shown in the figure, the casing is provided with a clamping rib 11, the indicator is internally provided with a containing groove 45, one end of the elastic element is propped against the inner wall of the top of the containing groove, and the other end is propped against the upper end face of the clamping rib. The spring is positioned by the clamping ribs, and the structure is simple.

In this embodiment, as shown in the figure, the two ends of the clamping rib are provided with side wings 111, and the holding groove is provided with a protruding rib 451 which is in blocking fit with the side wings. Plays a limiting role, so that the indicator cannot fall out.

In this embodiment, the indicator is provided with an open slot 46 for the exposed side portions of the spring, as shown. The indicator can be installed from the side, the spring part is arranged in the closed groove, and the spring part is arranged in the open groove, so that the indicator is not easy to fall off while the installation is not affected.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.

Claims

1. The utility model provides a tripping device of residual current operated circuit breaker, includes casing (1), be equipped with release (2) and rotatable pendulum rod (3) that set up in the casing, still be equipped with clearance fit's indicator (4) on the casing and with indicator matched with elastic component (40), its characterized in that: the swing rod comprises a first rod (31) and a second rod (32), the release is matched with the first rod and used for driving the swing rod to rotate, and a release part is arranged on the second rod;

the indicator is provided with a limiting part (41) and a linkage part (42);

2. The trip mechanism of a residual current operated circuit breaker according to claim 1, wherein: the first rod is provided with a linkage groove (311), the release comprises a release rod (21), and the release rod is matched with the inner wall of the linkage groove.

3. The trip mechanism of a residual current operated circuit breaker according to claim 1, wherein: the limiting part is a side plate arranged on the indicating piece, and a limiting boss (312) matched with the side plate is arranged on the first rod.

4. The trip mechanism of a residual current operated circuit breaker according to claim 1, wherein: the indicator comprises support legs (44), the linkage part is a linkage rod arranged on the support legs, and the linkage rod is matched with the lower end face of the second rod.

5. The trip mechanism of a residual current operated circuit breaker according to claim 1, wherein: the indicator comprises supporting legs (44), the linkage part is a linkage rod arranged on the supporting legs, a sinking groove (321) is arranged on the second rod, and the supporting leg part stretches into the sinking groove to be matched with the inner wall of the sinking groove.

6. The trip mechanism of a residual current operated circuit breaker according to claim 1, wherein: the elastic piece is a spring.

7. The trip mechanism of a residual current operated circuit breaker according to claim 6, wherein: the shell is provided with a clamping rib (11), an accommodating groove (45) is formed in the indicating piece, one end of the elastic piece is propped against the inner wall of the top of the accommodating groove, and the other end of the elastic piece is propped against the upper end face of the clamping rib.

8. The trip mechanism of a residual current operated circuit breaker according to claim 7, wherein: the two ends of the clamping rib are provided with side wings (111), and ribs (451) which are in blocking fit with the side wings are arranged in the accommodating groove.

9. The trip mechanism of a residual current operated circuit breaker according to claim 8, wherein: the indicator is provided with an open slot (46) for the partial exposure of the side of the spring.