CN211605073U

CN211605073U - Residual current operated circuit breaker

Info

Publication number: CN211605073U
Application number: CN202020233874.2U
Authority: CN
Inventors: 李晓珍; 董敏; 董晓丹; 徐国俊
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-09-29
Anticipated expiration: 2030-02-28

Abstract

A residual current operated circuit breaker relates to the technical field of low-voltage electricity. The residual current operated circuit breaker comprises a cover body, an operating mechanism, a tripping mechanism and a base, wherein the operating mechanism and the tripping mechanism are respectively connected to the base and are mutually connected; operating device includes first body and the articulated handle that sets up in first body to and the lever member of being connected with the handle, the handle passes the lid and extends outside the lid, the one end that the handle was kept away from to the lever member is connected with the moving contact, be connected with the static contact that is used for being connected with the moving contact on the base, twist grip can make the moving contact or disconnection with the static contact, tripping device includes the drive division, the drive division is connected with operating device drive, with drive moving contact and static contact disconnection. This residual current operated circuit breaker equipment is convenient, is convenient for promote work efficiency.

Description

Residual current operated circuit breaker

Technical Field

The utility model relates to a low pressure electrical technology field particularly, relates to a residual current operated circuit breaker.

Background

The residual current operated circuit breaker is a multifunctional circuit breaker which combines the function of detecting leakage current and the function of breaking a main circuit, can carry out safety protection on a circuit, and is an essential product of a terminal distribution circuit. When a person gets an electric shock or the unbalanced current of a power grid exceeds a specified value, the residual current operated circuit breaker can quickly cut off a circuit power supply in a very short time, so that the safety of the person or electric equipment is protected. The power supply can be quickly cut off in a short time, and the power supply has a great effect on the safety of power utilization, so that the power supply is widely applied to actual life.

However, the residual current operated circuit breaker in the prior art has many parts and many and complicated assembly processes, which leads to poor stability of the residual current operated circuit breaker, thereby affecting the working efficiency of the residual current operated circuit breaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a residual current operated circuit breaker, this residual current operated circuit breaker equipment is convenient, is convenient for promote work efficiency.

The embodiment of the utility model is realized like this:

one aspect of the present invention provides a residual current operated circuit breaker, which includes a cover, an operating mechanism, a tripping mechanism and a base, wherein the operating mechanism and the tripping mechanism are respectively connected to the base, and the operating mechanism and the tripping mechanism are connected to each other, the cover covers the base, so that the operating mechanism and the tripping mechanism are accommodated in an accommodating cavity between the base and the cover; the operating mechanism comprises a first body, a handle and a lever member, wherein the handle is arranged in the first body in a hinged mode, the lever member is connected with the handle, the handle penetrates through the cover body and extends out of the cover body, one end, far away from the handle, of the lever member is connected with a moving contact, a static contact used for being connected with the moving contact is connected onto the base, the moving contact can be in contact with the static contact by rotating the handle, the tripping mechanism comprises a driving portion, and the driving portion is in driving connection with the operating mechanism to drive the moving contact to be disconnected with the static contact. This residual current operated circuit breaker equipment is convenient, is convenient for promote work efficiency.

Optionally, the trip mechanism further includes a second body and a trip unit, the second body is connected to the trip unit, and the driving portion is disposed on the second body.

Optionally, a mutual inductor is further arranged on the base, and the mutual inductor is electrically connected with the release.

Optionally, the operating mechanism and the trip mechanism are connected by a rivet.

Optionally, a handle sleeve is sleeved on the handle.

Optionally, an installation block is arranged on the operating mechanism or the tripping mechanism, a first installation hole is arranged on the installation block, a second installation hole is arranged on the base corresponding to the first installation hole, and a first connecting piece sequentially penetrates through the first installation hole and the second installation hole, so that the operating mechanism or the tripping mechanism is connected with the base.

Optionally, a third mounting hole is formed in the base, a fourth mounting hole is formed in the cover body corresponding to the third mounting hole, and a second connecting piece sequentially penetrates through the third mounting hole and the fourth mounting hole, so that the base is connected with the cover body.

Optionally, the first connector and the second connector are both self-tapping nails.

Optionally, the cover and the base are both plastic materials.

The beneficial effects of the utility model include:

in the residual current operated circuit breaker provided by the embodiment, the operating mechanism and the tripping mechanism are connected with each other, and the operating mechanism and the tripping mechanism which are connected with each other are connected to the base together and then are covered on the base through the cover body, so that the operating mechanism and the tripping mechanism are accommodated in the accommodating cavity between the cover body and the base, and thus, the residual current operated circuit breaker is compact in structure and saves space; in addition, the operating mechanism of this embodiment sets up the handle on first body through rotatory articulated, can drive the motion of lever spare to drive the moving contact motion through lever spare, and then make moving contact and static contact connection. When the current imbalance reaches a threshold value after the moving contact is connected with the fixed contact, the driving part of the tripping mechanism acts to drive the operating mechanism, so that the moving contact of the operating mechanism is disconnected with the fixed contact on the base, and the tripping of the residual current operated circuit breaker is realized to achieve the function of leakage protection; the moving contact and the static contact are contacted again by rotating the handle, and the reclosing can be realized so as to conduct the circuit. The application discloses residual current operated circuit breaker directly drives the motion of lever spare through the handle to the moving contact that makes to connect on lever spare realizes being connected with the static contact, through the circuit protection of drive division in order to realize residual current operated circuit breaker. Consequently, the residual current operated circuit breaker of this application, the component part of its whole device is simple, and the equipment is convenient, and compact structure saves space, has circuit protection function moreover, can effectively promote residual current operated circuit breaker's working property and packaging efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a base of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an operating mechanism and a tripping mechanism of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 5 is an installation schematic diagram of a handle of a residual current operated circuit breaker according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of an operating mechanism and a moving contact of the residual current operated circuit breaker according to an embodiment of the present invention.

Icon: 10-a cover body; 11-a fourth mounting hole; 20-an operating mechanism; 21-a first body; 22-a handle; 221-handle cover; 23-a lever member; 24-moving contact; 30-a trip mechanism; 31-a second body; 32-a release; 40-a base; 41-a static contact; 42-a transformer; 43-a second mounting hole; 44-a third mounting hole; 50-a mounting block; 51-first mounting hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In real life, most of the places with electricity basically use an electric element (commonly called a leakage switch) such as a residual current operated circuit breaker. The residual current detection circuit is mainly used for detecting residual current, comparing the residual current value with a reference value, and when the residual current value exceeds the reference value, the mechanical switch electric appliance enables a main circuit contact to be disconnected. When a person gets an electric shock or the leakage current of a power grid exceeds a specified value, the residual current operated circuit breaker can rapidly cut off a fault power supply in a very short time, so that the safety of the person and electric equipment is protected, and the residual current operated circuit breaker is an electric appliance widely applied in production and life. This embodiment is directed at residual current operated circuit breaker among the prior art, and its operating device and tripping device have the problem that the part is many, the structure is complicated to propose a can solve among the prior art residual current operated circuit breaker equipment inconvenient, the relatively poor and less efficient new residual current operated circuit breaker structure of stability.

Referring to fig. 1 and fig. 2, the present embodiment provides a residual current operated circuit breaker, which includes a cover 10, an operating mechanism 20, a trip mechanism 30, and a base 40, wherein the operating mechanism 20 and the trip mechanism 30 are respectively connected to the base 40, the operating mechanism 20 and the trip mechanism 30 are connected to each other, and the cover 10 covers the base 40, so that the operating mechanism 20 and the trip mechanism 30 are accommodated in an accommodating cavity between the base 40 and the cover 10;

the operating mechanism 20 includes a first body 21, a handle 22 hinged in the first body 21, and a lever member 23 connected to the handle 22, the handle 22 passes through the cover 10 and extends to the outside of the cover 10, one end of the lever member 23 away from the handle 22 is connected to a movable contact 24, a stationary contact 41 connected to the movable contact 24 is connected to the base 40, the movable contact 24 and the stationary contact 41 can be contacted or disconnected by rotating the handle 22, the trip mechanism 30 includes a driving portion, the driving portion is in driving connection with the operating mechanism 20, and when an unbalanced current is detected (i.e., when a leakage current exceeds a predetermined threshold), the driving portion can be used to drive the movable contact 24 to be disconnected from the stationary contact 41.

It should be noted that, in the present embodiment, the operating mechanism 20 and the trip mechanism 30 are arranged side by side, so that the operating mechanism 20 and the trip mechanism 30 are connected to each other, and as for the whole apparatus, the structure is more compact, the occupied area of the residual current operated circuit breaker is further reduced, and the space is saved.

In this embodiment, the number of the movable contacts 24 is two, and both the movable contacts 24 are connected to one end of the lever 23 in the operating mechanism 20, the number of the fixed contacts 41 is also two, and the two fixed contacts 41 are respectively mounted on the base 40. When the handle is pushed to be switched on, the two movable contacts 24 move along with the lever member 23 and are in matching contact with the two fixed contacts 41 mounted on the base 40.

In addition, the cover 10 can cover the base 40, and a receiving cavity is formed between the cover and the base 40, and the operating mechanism 20 and the trip mechanism 30 connected to each other can be received in the receiving cavity. Specifically, in the present embodiment, the structural form of the cover 10 can be referred to fig. 1.

In this embodiment, the operating mechanism 20 includes a first body 21, a handle 22 hinged in the first body 21, and a lever member 23 connected to the handle 22, wherein the handle 22 passes through the cover 10 and extends out of the cover 10, and one end of the lever member 23 away from the handle 22 is connected to a movable contact 24. In this way, the operating handle 22 is rotated to drive the lever 23 to move, and further drive the movable contact 24 to move, so that the movable contact 24 is contacted with the fixed contact 41 to connect the circuit.

It should be noted that, for example, the lever member 23 may adopt a crank-link structure, and the lever member 23 is connected to the handle 22, and when the handle 22 rotates, the lever member 23 can be driven to rotate simultaneously, so as to drive the movable contact 24 connected to one end of the lever member 23 to move. The lever 23 is constructed as shown in fig. 6. It should be understood that the structural form shown in fig. 6 is not a limitation to the operating mechanism 20 of the present application, and those skilled in the art can make appropriate adjustments according to actual needs, as long as when the handle 22 is rotated in the forward direction, the handle 22 can drive the movable contact 24 connected to the other end of the lever member 23 to move, so as to contact with the stationary contact 41; when the handle 22 is rotated reversely, the movable contact 24 connected to the other end of the lever member 23 can be driven to reset. In this way, the residual current operated circuit breaker can be turned on or off by operating the handle 22.

In the present embodiment, the trip mechanism 30 is used to drive the operating mechanism 20, so that the movable contact 24 of the operating mechanism 20 is disconnected from the fixed contact 41 on the base 40.

Specifically, in the present embodiment, the trip mechanism 30 acts on the operating mechanism 20 through the driving portion, so that the movable contact 24 of the operating mechanism 20 is disconnected from the fixed contact 41 of the base 40. For example, the driving portion may act on the handle 22 to rotate the handle 22, so as to reset the movable contact 24 of the operating mechanism 20; or, by acting on the lever member 23 or the movable contact 24, the lever member 23 or the movable contact 24 deviates from the stationary contact 41, so that the movable contact 24 and the stationary contact 41 are disconnected; alternatively, an insulating member may be mounted on the driving portion, and by operating the driving portion of the trip mechanism 30, the insulating member mounted on the driving portion is inserted between the movable contact 24 and the stationary contact 41, so that the movable contact 24 and the stationary contact 41 are disconnected. The specific disconnection method is not limited in the present application, and those skilled in the art can select the disconnection method according to actual situations.

The operation of the trip mechanism 30 can be determined by a current signal. That is, after the moving contact 24 is connected to the fixed contact 41, when a current signal is unbalanced or a safety fault occurs, the trip mechanism 30 operates, so that the moving contact 24 is disconnected from the fixed contact 41, that is, the residual current operated circuit breaker trips, and then the operating mechanism 20 and the trip mechanism 30 both recover to the initial positions. When the circuit needs to be switched on, the handle 22 is rotated again to realize the reclosing.

In summary, in the residual current operated circuit breaker provided in this embodiment, the operating mechanism 20 and the trip mechanism 30 are connected to each other, and the operating mechanism 20 and the trip mechanism 30 connected to each other are connected to the base 40 together, and then the cover 10 covers the base 40, so that the operating mechanism 20 and the trip mechanism 30 are accommodated in the accommodating cavity between the cover 10 and the base 40, so that the residual current operated circuit breaker of this embodiment has a compact structure and saves space; in addition, the operating mechanism 20 of the present embodiment is hinged to the handle 22 disposed on the first body 21 through rotation, and can drive the lever member 23 to move, so that the lever member 23 drives the movable contact 24 to move, and the movable contact 24 is connected to the fixed contact 41. When the current is unbalanced after the moving contact 24 is connected with the fixed contact 41, the driving part of the tripping mechanism 30 acts to drive the operating mechanism 20, so that the moving contact 24 of the operating mechanism 20 is disconnected with the fixed contact 41 on the base 40, and the tripping of the residual current operated circuit breaker is realized to achieve the function of leakage protection; the moving contact 24 and the fixed contact 41 are contacted again by rotating the handle 22, so that reclosing can be realized. The application discloses residual current operated circuit breaker directly drives the motion of lever member 23 through handle 22 to the moving contact 24 that makes to connect on lever member 23 realizes being connected with static contact 41, through the circuit protection of drive division in order to realize residual current operated circuit breaker. Consequently, the residual current operated circuit breaker of this application, the component part of its whole device is simple, and the equipment is convenient, and compact structure saves space, has circuit protection function moreover, can effectively promote residual current operated circuit breaker's working property and packaging efficiency.

Further, the trip mechanism 30 of the present embodiment further includes a second body 31 and a trip unit 32, the second body 31 is connected to the trip unit 32, and the driving portion is disposed on the second body 31. Thus, the second body 31 can be driven by the release 32, and the driving portion can be driven to drive the operating mechanism 20. Of course, the present invention is not limited to this configuration, and in other embodiments, a person skilled in the art may also adopt other configurations to drive the operating mechanism 20. As long as the current imbalance can be caused, the fixed contact 41 of the movable contact 24 is driven to be disconnected, so that the residual current operated circuit breaker is tripped; after the residual current operated circuit breaker trips, the driving part is enabled to recover the initial position.

Illustratively, to facilitate a secure connection of the operating mechanism 20 and the trip mechanism 30, in the present embodiment, the operating mechanism 20 and the trip mechanism 30 are connected together by a rivet.

Further, referring to fig. 3, a transformer 42 is further disposed on the base 40 of the present embodiment, and the transformer 42 is electrically connected to the release 32. The transformer 42 is used for detecting the stability of the current after the circuit is connected, and when the transformer 42 senses the unbalanced current, the unbalanced current is output to the release 32 after being processed by the circuit board. When the threshold value of the tripper 32 is reached, the tripper 32 acts to push the tripper 32 to trip from the second body 31, the second body 31 drives the driving part to move, so that the movable contact 24 of the operating mechanism 20 is disconnected from the fixed contact 41 of the base 40, and the movable contact 24 and the fixed contact 41 are separated, that is, the residual current operated circuit breaker trips, thereby realizing the leakage protection function.

Referring to fig. 5, in order to increase the friction force of the handle 22 and facilitate the operator to rotate the handle 22, in the present embodiment, a handle sleeve 221 is sleeved on the handle 22. The handle cover 221 may be made of rubber. Anti-slip lines can also be added on the handle 22 to improve the comfort of the operator.

Referring to fig. 4, the operating mechanism 20 or the trip mechanism 30 is provided with a mounting block 50, the mounting block 50 is provided with a first mounting hole 51, the base 40 is provided with a second mounting hole 43 corresponding to the first mounting hole 51, and the first connecting member sequentially passes through the first mounting hole 51 and the second mounting hole 43, so that the operating mechanism 20 or the trip mechanism 30 is connected to the base 40. Of course, the fixing mode can be adjusted by the person skilled in the art as required.

Further, the number of the mounting blocks 50 is two, the two mounting blocks 50 are respectively and correspondingly disposed on two opposite sides of the operating mechanism 20 or the trip mechanism 30, each mounting block 50 is provided with a first mounting hole 51, and the number of the second mounting holes 43 on the base 40 corresponds to the number of the first mounting holes 51 one by one.

In this embodiment, the base 40 is further provided with a third mounting hole 44, the cover 10 is provided with a fourth mounting hole 11 corresponding to the third mounting hole 44, and the second connecting member sequentially passes through the third mounting hole 44 and the fourth mounting hole 11, so as to connect the base 40 and the cover 10.

Further, the number of the third mounting holes 44 is two, two third mounting holes 44 are respectively disposed at two opposite ends of the base 40, and correspondingly, the number of the fourth mounting holes 11 on the cover 10 corresponds to the number of the third mounting holes 44 on the base 40 one by one.

It should be noted that the mounting holes respectively formed on the opposite sides of the operating mechanism 20 or the trip mechanism 30, and the third mounting holes 44 respectively formed on the opposite sides of the base 40 are all for making the connecting and mounting structure more stable.

Preferably, in this embodiment, the first connecting piece and the second connecting piece are self-tapping screws.

In this embodiment, a plastic material may be used for the cover 10, the base 40, and the like.

The residual current operated circuit breaker of this application compares in prior art, because spare part that its adopted is less, the equipment is comparatively convenient, to a certain extent, also can reduce the cost of whole device.

The above description is only an alternative embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The residual current operated circuit breaker is characterized by comprising a cover body, an operating mechanism, a tripping mechanism and a base, wherein the operating mechanism and the tripping mechanism are respectively connected to the base and are mutually connected, and the cover body covers the base so as to enable the operating mechanism and the tripping mechanism to be accommodated in an accommodating cavity between the base and the cover body;

the operating mechanism comprises a first body, a handle and a lever member, wherein the handle is arranged in the first body in a hinged mode, the lever member is connected with the handle, the handle penetrates through the cover body and extends out of the cover body, one end, far away from the handle, of the lever member is connected with a moving contact, a static contact used for being connected with the moving contact is connected onto the base, the moving contact can be in contact with or disconnected from the static contact by rotating the handle, the tripping mechanism comprises a driving portion, and the driving portion is in driving connection with the operating mechanism to drive the moving contact to be disconnected from the static contact.

2. The residual current operated circuit breaker according to claim 1, characterized in that said trip mechanism further comprises a second body and a trip unit, said second body and said trip unit being connected, said driving portion being provided on said second body.

3. The residual current operated circuit breaker according to claim 2, wherein a transformer is further provided on said base, said transformer being electrically connected to said trip unit.

4. The residual current operated circuit breaker according to claim 1, characterized in that said operating mechanism and said tripping mechanism are connected by rivets.

5. The residual current operated circuit breaker according to claim 1, characterized in that said handle is sleeved with a handle sleeve.

6. The residual current operated circuit breaker according to claim 1, wherein the operating mechanism or the tripping mechanism is provided with a mounting block, the mounting block is provided with a first mounting hole, the base is provided with a second mounting hole corresponding to the first mounting hole, and a first connecting member sequentially passes through the first mounting hole and the second mounting hole so as to connect the operating mechanism or the tripping mechanism with the base.

7. The residual current operated circuit breaker according to claim 6, wherein a third mounting hole is formed on the base, a fourth mounting hole is formed on the cover corresponding to the third mounting hole, and a second connecting member sequentially passes through the third mounting hole and the fourth mounting hole, so that the base is connected with the cover.

8. The residual current operated circuit breaker according to claim 7, wherein said first and second connectors are self-tapping screws.

9. The residual current operated circuit breaker according to claim 1, wherein said cover and said base are both of plastic material.