CN219418935U - Leakage tripping mechanism of multipolar leakage circuit breaker - Google Patents

Abstract

The utility model relates to a multi-pole leakage breaker, in particular to a leakage tripping mechanism in the leakage breaker. The utility model adopts the following technical scheme: the utility model provides a multipolar electric leakage circuit breaker's electric leakage tripping device, includes handle, connecting rod, dropout rotating assembly and release, its characterized in that: the lock catch is provided with a linkage tripping stress surface, and the linkage deflector rod of the multipolar leakage circuit breaker is matched with the linkage tripping stress surface to realize synchronous switching-off of the multipolar leakage circuit breaker, so that the linkage tripping stress surface is separated from the linkage deflector rod when the handle of the leakage tripping mechanism is switched on. By adopting the scheme, the aim of the utility model is as follows: in order to solve the problem that the tripping of the circuit breaker is caused by the reason that the tripping cannot be distinguished in the prior art, the utility model provides the novel electric leakage tripping mechanism of the multipolar electric leakage circuit breaker, which is safe and reliable and can distinguish whether electric leakage is caused to trip.

Description

Leakage tripping mechanism of multipolar leakage circuit breaker

Technical Field

The utility model relates to a multi-pole leakage breaker, in particular to a leakage tripping mechanism in the leakage breaker.

Background

The common multipolar leakage circuit breaker at least comprises two stages of circuit breakers and a leakage tripping unit, namely two independent circuit breaker units and the leakage tripping unit are arranged in parallel, wherein the leakage tripping units are mutually linked, the linkage mode is that the tripping mechanisms among the circuit breakers of each electrode are synchronously linked through a linkage deflector rod, the linkage between the circuit breakers adjacent to the leakage tripping unit and the tripping mechanisms of the leakage tripping unit is also realized through the linkage deflector rod, the synchronous linkage is that the multipolar circuit breakers are simultaneously disconnected and the multipolar circuit breakers are simultaneously switched on, the multipolar leakage circuit breaker in the mode realizes synchronous tripping in the aspects of leakage, overload and short circuit, and meets the requirements from the safety aspect, but the circuit breakers are required to be tripped due to the fact that the reasons cannot be distinguished during switching on, and a large amount of workload is brought to maintenance.

Disclosure of Invention

The purpose of the utility model is that: in order to solve the problem that the tripping of the circuit breaker is caused by the reason that the tripping cannot be distinguished in the prior art, the utility model provides the novel electric leakage tripping mechanism of the multipolar electric leakage circuit breaker, which is safe and reliable and can distinguish whether electric leakage is caused to trip.

The utility model adopts the following technical scheme: the utility model provides a multipolar electric leakage circuit breaker's electric leakage tripping device, includes handle, connecting rod, trip rotating assembly and release, trip rotating assembly is including hasp, jump knot and torsional spring or spring, and wherein jump knot rotates to set up on the circuit breaker shell, and connecting rod one end is connected on the handle, and the other end is connected on the jump knot, and the hasp rotates to set up, and torsional spring or spring effect are on the hasp, and make hasp one end constitute the interference fit with the jump knot and can realize handle combined floodgate operation, the release sets up in one side of hasp, and the release action can be realized hasp and jump knot separation realization mechanism tripping action, its characterized in that: the lock catch is provided with a linkage tripping stress surface, and the linkage deflector rod of the multipolar leakage circuit breaker is matched with the linkage tripping stress surface to realize synchronous switching-off of the multipolar leakage circuit breaker, so that the linkage tripping stress surface is separated from the linkage deflector rod when the handle of the leakage tripping mechanism is switched on.

By adopting the scheme, the multi-pole circuit breaker can be well tripped through the linkage tripping stress surface, the specific working mode is that when the multi-pole circuit breaker is switched on, the leakage tripping mechanism of the leakage unit is switched on firstly or all units of the multi-pole circuit breaker are switched on synchronously, when the leakage tripping mechanism of the leakage unit is switched on firstly, the linkage tripping stress surface is separated from the linkage deflector rod of the multi-pole circuit breaker, the movement of the linkage deflector rod is not influenced, and other follow-up circuit breaker units can be switched on or not switched on; when synchronous closing, the linkage tripping force bearing surface and the linkage deflector rod rotate synchronously, so that the mutual influence is avoided; when the circuit breaker is opened, the electric leakage tripping mechanism of the electric leakage unit is partially opened. The above mode ensures that other breaker units can not be switched on under the condition of circuit leakage, and the leakage tripping mechanism can be switched on when the circuit is not switched off due to leakage.

The utility model is further provided with the following steps: the linkage tripping stress surface on the lock catch is a cambered surface or a straight surface; or the lock catch is provided with a long groove, and the inner side surface of the upper end of the long groove is a linkage tripping stress surface.

By adopting the mode, the linkage tripping stress surface can be well ensured to have the following two functions, namely, when the leakage tripping mechanism of the leakage unit is disconnected, the linkage shifting lever can be driven to work by the linkage tripping stress surface, so that the disconnection of the multipole circuit breaker is realized; 2. under the condition that the leakage tripping mechanism of the leakage unit is not switched on, the multipole circuit breaker cannot be switched on, so that a safety system is ensured.

The final setting of the utility model is as follows: the tripping rotating assembly further comprises a moving contact, the moving contact is directly or indirectly connected with the lock catch, a fixed contact is arranged on the support of the tripping device in an extending mode, and the moving contact is contacted with or disconnected from the fixed contact when the leakage tripping mechanism is switched on or off.

Through adopting above-mentioned scheme, be a preferred state of this patent, through the setting of moving contact and static contact, can realize breaking of circuit like this and switch on, do benefit to the break-make of short-circuit ware internal circuit, increase product performance. Of course, in this patent, the moving and static contacts may not be provided, so that the circuit inside the circuit breaker may be always in an electrified state.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a perspective view of a first embodiment of the present utility model;

fig. 2 is a diagram showing the structure of the embodiment of the utility model in which a handle of a leakage tripping mechanism is switched on and other breaker units are disconnected;

FIG. 3 is a schematic diagram showing the states of the leakage tripping mechanism and the linkage shift lever when all the multi-pole leakage circuit breaker is switched on according to the embodiment of the utility model;

FIG. 4 is a schematic diagram showing the state of the earth leakage tripping mechanism and the linkage shift lever when the whole part of the multi-pole earth leakage breaker is closed according to the embodiment of the utility model;

fig. 5 is a diagram showing the structure of the second embodiment of the utility model in which the handle of the second leakage tripping mechanism is switched on and the other circuit breakers are disconnected;

FIG. 6 is a schematic diagram of a state of a leakage tripping mechanism and a linkage lever when all the two multi-pole leakage circuit breaker is switched on according to an embodiment of the present utility model;

fig. 7 is a state structure diagram of an electric leakage tripping mechanism and a linkage deflector rod when the whole part of the two-pole electric leakage breaker is in the embodiment of the utility model.

Description of the embodiments

The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the description as it relates to "first", "second", etc. in the present utility model is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implying an indication of the number of technical features indicated. In the description of the present utility model, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model.

As shown in fig. 1-4, in a first embodiment of the present utility model, an electric leakage tripping mechanism of a multipolar electric leakage breaker includes a handle 1, a connecting rod 2, a tripping rotating assembly 3 and a tripper 4, where the tripping rotating assembly 3 includes a latch 31, a trip buckle 32 and a torsion spring or a spring, where the trip buckle 32 is rotatably disposed on a casing of the breaker, that is, rotatably disposed relative to the casing of the breaker, and may be directly disposed or indirectly disposed, one end of the connecting rod 2 is connected to the handle 1, the other end is connected to the trip buckle 32, the latch 31 is rotatably disposed, the torsion spring or the spring acts on the latch 31, so that one end of the latch 31 and the trip buckle 32 form an abutting fit to implement a switching operation of the handle 1, the tripper 4 is disposed on one side of the latch 31, and the tripper 4 acts to implement a tripping action of a separating mechanism of the latch 31 and the trip buckle 32, so that in this embodiment, a force-receiving surface 311 is disposed on the latch 31, and a force-receiving surface 311 is disposed on the breaker 31, and a force-receiving surface 311 is synchronously separated from the force-receiving surface 311 of the multipolar electric leakage breaker when the linkage mechanism is in which the linkage 5 is in the present embodiment. By adopting the scheme, the multi-pole circuit breaker can be well tripped through the linkage trip stress surface 311, the specific working mode is that when the multi-pole circuit breaker is switched on, the leakage tripping mechanism of the leakage unit is switched on firstly or all units of the multi-pole circuit breaker are switched on synchronously, when the leakage tripping mechanism of the leakage unit is switched on firstly, the linkage trip stress surface 311 is separated from the linkage deflector rod 5 of the multi-pole circuit breaker, the movement of the linkage deflector rod 5 is not influenced, and other follow-up circuit breaker units can be switched on or not switched on; the linkage release stress surface 311 and the linkage deflector rod 5 synchronously rotate during synchronous closing, so that the mutual influence is avoided; when the circuit breaker is opened, the electric leakage tripping mechanism of the electric leakage unit is opened, the linkage tripping stress surface 311 drives the linkage deflector rod 5 to act together, so that the whole multi-pole circuit breaker is opened, and when other circuit breaker units of the multi-pole circuit breaker are opened, the electric leakage tripping mechanism of the electric leakage unit is partially opened. The above mode ensures that other breaker units can not be switched on under the condition of circuit leakage, and the leakage tripping mechanism can be switched on when the circuit is not switched off due to leakage. The multipolar earth leakage breaker here may be 1p+n, 2P, 3P, 4P, or the like.

In an embodiment of the present utility model, the linkage trip force-bearing surface 311 on the lock catch 31 is a long groove, and the inner side surface of the upper end of the long groove is the linkage trip force-bearing surface 311. Of course, the arc surface may be the linkage trip force bearing surface 311, as shown in fig. 5, 6 and 7, that is, the diagram of the second embodiment. By adopting the mode, the linkage tripping stress surface 311 can be well ensured to have the following two functions, namely, when the leakage tripping mechanism of the leakage unit is disconnected, the linkage deflector rod 5 can be driven to work through the linkage tripping stress surface 311, so that the disconnection of the multipole circuit breaker is realized; 2. under the condition that the leakage tripping mechanism of the leakage unit is not switched on, the multipole circuit breaker cannot be switched on, so that a safety system is ensured.

In the first embodiment of the present utility model, the trip rotating assembly 3 further includes a moving contact 33, the moving contact 33 is directly or indirectly connected with the lock catch 31, a fixed contact 41 is extended on a support of the trip device 4, and the moving contact 33 is contacted with or disconnected from the fixed contact 41 when the leakage tripping mechanism is switched on or off. Of course, in this patent, the moving and static contacts may not be provided, so that the circuit inside the circuit breaker may be always in an electrified state.

Claims (4)

1. The utility model provides a multipolar electric leakage circuit breaker's electric leakage tripping device, includes handle, connecting rod, trip rotating assembly and release, trip rotating assembly is including hasp, jump knot and torsional spring or spring, and wherein jump knot rotates to set up on the circuit breaker shell, and connecting rod one end is connected on the handle, and the other end is connected on the jump knot, and the hasp rotates to set up, and torsional spring or spring effect are on the hasp, and make hasp one end constitute the interference fit with the jump knot and can realize handle combined floodgate operation, the release sets up in one side of hasp, and the release action can be realized hasp and jump knot separation realization mechanism tripping action, its characterized in that: the lock catch is provided with a linkage tripping stress surface, and the linkage deflector rod of the multipolar leakage circuit breaker is matched with the linkage tripping stress surface to realize synchronous switching-off of the multipolar leakage circuit breaker, so that the linkage tripping stress surface is separated from the linkage deflector rod when the handle of the leakage tripping mechanism is switched on.

2. The leakage trip mechanism of a multipole leakage circuit breaker according to claim 1, wherein: the linkage tripping stress surface on the lock catch is an arc surface or a straight surface.

3. The leakage trip mechanism of a multipole leakage circuit breaker according to claim 1, wherein: the lock catch is provided with a long groove, and the inner side surface of the upper end of the long groove is a linkage tripping stress surface.

4. The earth leakage trip mechanism of a multipole earth leakage breaker according to claim 1 or 2 or 3, characterized in that: the tripping rotating assembly further comprises a moving contact, the moving contact is directly or indirectly connected with the lock catch, a fixed contact is arranged on the support of the tripping device in an extending mode, and the moving contact is contacted with or disconnected from the fixed contact when the leakage tripping mechanism is switched on or off.