CN215527664U - Circuit breaker - Google Patents

Abstract

The utility model provides a circuit breaker, which relates to the technical field of low-voltage electrical appliances and comprises an operating mechanism and a static contact component, wherein the operating mechanism is in transmission connection with the dynamic contact component and drives the dynamic contact component and the static contact component to be switched on or switched off; input terminal and output terminal set up in the same one side of casing to be connected input terminal and moving contact subassembly, output terminal is connected with the static contact subassembly, can realize the homonymy and advance the function of unilateral play, so the overall arrangement can remove output terminal to the rear end of casing, effectively improves the utilization in circuit breaker rear end space, avoids output terminal to occupy the front end space of circuit breaker casing simultaneously, the wiring form of going out after the back is also effectual has improved the convenience of wiring.

Description

Circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker.

Background

With the rapid development of economy, the living standard of people is rapidly improved, and the safety of household electricity utilization is required to be higher. The circuit breaker may be installed in a terminal distribution line. Meanwhile, the circuit can be connected, carried and disconnected under the condition of normal or abnormal circuit, and the circuit and the electrical equipment are effectively protected.

The current circuit breaker usually can set up input terminal and output terminal in the opposite side of casing, when the installation circuit breaker, can peg graft the circuit breaker in quick-witted case along output terminal to the direction of input terminal, say from the direction of switching on that inserts load circuit promptly, form the wiring form that goes out before the back, this kind of wiring form can lead to the front end space to occupy great because output terminal is comparatively forward, simultaneously, the wiring direction that goes out does not also do benefit to the convenience of wiring.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and an object of the present invention is to provide a circuit breaker, in which an output terminal is disposed at one side of an input terminal to solve the problems of large front space occupation and inconvenient wiring caused by the fact that the output terminal is located at a front side.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in one aspect of the embodiments of the present invention, a circuit breaker is provided, which includes a housing, and an operating mechanism, a moving contact assembly, a fixed contact assembly, an input terminal, and an output terminal, which are disposed in the housing; the operating mechanism is in transmission connection with the moving contact component and drives the moving contact component and the static contact component to switch on or switch off; the input terminal and the output terminal are arranged on the same side of the shell at intervals, the input terminal is connected with the moving contact component, the output terminal is connected with the static contact component, and the circuit breaker is used for being plugged in the case through the input terminal and the output terminal.

Optionally, the housing has a square structure, the input terminal is used for being plugged with the input terminal row of the chassis, and the output terminal is used for being plugged with the output terminal row of the chassis.

Optionally, the circuit breaker further includes a fixed contact connecting wire, and the fixed contact assembly is connected to the output terminal through the fixed contact connecting wire.

Optionally, the operating mechanism includes a handle and an actuating mechanism disposed in the housing, the handle is in transmission connection with the moving contact assembly through the actuating mechanism, and the handle and the output terminal are respectively located on opposite sides of the housing.

Optionally, the housing is of a cuboid structure, the handle, the action mechanism and the moving contact assembly are sequentially arranged along the length direction of the housing, and the input terminal and the output terminal are sequentially arranged along the height direction of the housing.

Optionally, the circuit breaker further comprises a tripping mechanism arranged on the housing, the tripping mechanism corresponds to the actuating mechanism and is used for pushing the actuating mechanism to drive the moving contact assembly to open, and the stretching direction of the tripping mechanism and the length direction of the housing form an acute angle.

Optionally, the circuit breaker further includes a locking member disposed in the housing, and the locking member is configured to be matched with the case and locked when the housing is plugged into the case.

Optionally, the circuit breaker further comprises a flexible connecting wire, and the input terminal is connected with the moving contact assembly through the flexible connecting wire; the circuit breaker also comprises a thermal release, the thermal release is contacted with the soft connecting wire, and the thermal release is also corresponding to the action mechanism.

Optionally, the circuit breaker further includes an arc extinguisher disposed in the housing, the arc extinguisher is located between the moving contact assembly and the input terminal, and the arc extinguisher is disposed corresponding to the moving contact assembly and the fixed contact assembly.

Optionally, the circuit breaker further includes a signal terminal disposed on the housing, the signal terminal and the input terminal are located on the same side of the housing, and the signal terminal is connected to the static contact assembly.

The beneficial effects of the utility model include:

the utility model provides a circuit breaker, which comprises a shell, an operating mechanism, a movable contact component, a fixed contact component, an input terminal and an output terminal, wherein the operating mechanism, the movable contact component, the fixed contact component, the input terminal and the output terminal are arranged on the shell; the operating mechanism is in transmission connection with the moving contact component, an input terminal and an output terminal are arranged on a shell of the circuit breaker, when in arrangement, the input terminal and the output terminal can be arranged at the same side of the shell, and the input terminal is connected with the moving contact component, the output terminal is connected with the static contact component, can realize the function of same-side inlet and same-side outlet, when one side of the shell provided with the input terminal and the output terminal is used as the rear end for description, the arrangement is performed after the output terminal is moved to the rear end of the shell correspondingly, so that the utilization of the space at the rear end of the circuit breaker is effectively improved, meanwhile, the output terminal is prevented from occupying the front end space of the shell of the circuit breaker, the miniaturization of the circuit breaker is convenient to realize, meanwhile, the wiring form of backward and forward output effectively improves the convenience of wiring, and the problems that the existing backward and forward output layout causes inconvenience when the front-end wiring is needed and the rear-end wiring is needed and the output terminal occupies space are solved. In addition, the input terminal and the output terminal are arranged in a mode of a certain interval, so that the interval between the incoming line and the outgoing line can be increased, and the interference between the incoming line and the outgoing line is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed 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 external structural diagram of a circuit breaker according to an embodiment of the present invention;

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

fig. 3 is a schematic diagram of an internal structure of a circuit breaker according to an embodiment of the present invention;

fig. 4 is a second schematic diagram of an internal structure of a circuit breaker according to an embodiment of the present invention;

fig. 5 is a third schematic diagram illustrating an internal structure of a circuit breaker according to an embodiment of the present invention;

fig. 6 is a fourth schematic diagram of an internal structure of a circuit breaker according to an embodiment of the present invention.

Icon: 100-a housing; 101-length direction; 102-height direction; 103-width direction; 110-input terminals; 111-input terminal row; 120-output terminals; 121-output terminal row; 130-signal terminals; 131-a signal wiring bank; 140-a handle; 150-a flexible connection; 160-static contact connecting wire; 170-an action mechanism; 180-a trip mechanism; 181-extension and retraction direction of the tripping mechanism; 190-a lock; 200-moving contact assembly; 210-a stationary contact assembly; 220-thermal trip; 230-arc extinguisher.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 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 figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. It should be noted that, in the case of no conflict, various features in the embodiments of the present invention may be combined with each other, and the combined embodiments are still within the 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 one aspect of the embodiments of the present invention, as shown in fig. 1, fig. 2 and fig. 3, a circuit breaker is provided, which includes a housing 100, and an operating mechanism, a movable contact assembly 200, a fixed contact assembly 210, an input terminal 110 and an output terminal 120, which are disposed in the housing 100; the operating mechanism is drivingly connected to the moving contact assembly 200, either through a permanent or only when required. As shown in fig. 4, the operating mechanism disposed in the housing 100 can drive the movable contact assembly 200 to move when being driven by an external force, so that the movable contact assembly 200 makes the circuit breaker be in a closing state when contacting the fixed contact assembly 210, as shown in fig. 3, the movable contact assembly 200 makes the circuit breaker be in an opening state when being separated from the fixed contact assembly 210, thereby implementing the connection and disconnection of the circuit breaker to the connected load circuit.

As shown in fig. 1 and 2, in order to connect the circuit breaker to the load circuit, an input terminal 110 and an output terminal 120 may be disposed on a housing 100 of the circuit breaker, and when the circuit breaker is disposed, the input terminal 110 and the output terminal 120 may be disposed on the same side of the housing 100, and the input terminal 110 is connected to the movable contact assembly 200, and the output terminal 120 is connected to the fixed contact assembly 210, and the input terminal 110 and the output terminal 120 may be plug-in terminals, such that one end of the circuit breaker having the input terminal 110 and the output terminal 120 is plugged into the chassis, such that the input terminal 110 is plugged into the input terminal row 111, the output terminal 120 is plugged into the output terminal row 121, and the circuit breaker is connected to the load circuit, such that when the circuit breaker is in a closing state (the movable contact assembly 200 is in contact with the fixed contact assembly 210), the input terminal row 111 is plugged into the load circuit via the input terminal 110, the movable contact assembly 200, The static contact assembly 210, the output terminal 120 and the output terminal row 121 form a conductive path. The input terminal 110 and the output terminal 120 are both arranged on the same side of the casing 100 (for example, as shown in fig. 1 to 6, the input terminal 110 and the output terminal 120 are arranged on the right side of the casing 100), a function of entering from the same side and exiting from the same side can be realized, when the casing 100 is provided with one side of the input terminal 110 and the output terminal 120 as a rear end description, the rear end description is correspondingly taken as a rear-end and rear-end layout, so that the output terminal 120 can be moved to the rear end of the casing 100 by the layout, the utilization of the rear end space of the circuit breaker is effectively improved, meanwhile, the front end space of the circuit breaker casing 100 is prevented from being occupied by the output terminal 120, the miniaturization of the circuit breaker is facilitated, meanwhile, the convenience of wiring is effectively improved by the rear-end and rear-end wiring form in the prior art, and the problems that the front-end and rear-end wiring are required and the output terminal 120 occupies a space are solved. In addition, the input terminal 110 and the output terminal 120 are arranged at a certain interval, so that the interval between the incoming line and the outgoing line can be increased, and the interference between the incoming line and the outgoing line is avoided.

Optionally, as shown in fig. 3, in order to realize stable connection between the movable contact assembly 200 and the input terminal 110, the input terminal 110 may be connected to the movable contact assembly 200 through the flexible connection line 150 to form an input line, the flexible connection line 150 may be made of a conductive material with a certain deformation capability, such as copper, aluminum, and the like, so that the flexible connection line 150 may have a certain deformation capability while having a conductivity, and thus, in a process in which the operating mechanism drives the movable contact assembly 200 to move, the flexible connection line 150 may ensure stable connection with the movable contact assembly 200 by using its own deformation characteristic, thereby realizing reliable connection and disconnection of a circuit.

Optionally, as shown in fig. 3, in order to implement stable connection between the fixed contact and the output terminal 120, a fixed contact connection line 160 may be further provided, so that the fixed contact assembly 210 is connected with the output terminal 120 through the fixed contact connection line 160 to form an output line, and due to the arrangement of the fixed contact connection line 160, flexible layout of the fixed contact assembly 210 is facilitated, and limitation of the position of the output terminal 120 on the fixed contact assembly 210 when being laid out in the housing 100 is reduced. The stationary contact connection line 160 may be made of a material with good electrical conductivity, such as copper, silver, etc. Of course, in some embodiments, the fixed contact component 210 may also be directly connected with the output terminal 120.

The flexible connection line 150 may be in various forms such as a plate shape, a cylinder shape, etc., and the fixed contact connection line 160 may be disposed with reference to the flexible connection line 150, which is not described herein again.

Further, since the input terminal 110 and the output terminal 120 are both provided on the same side of the case 100, when the operating mechanism, the handle 140, the latch, and the like in the circuit breaker are provided, they can be provided on the other side of the case 100, for example, on the left side of the input line and the output line, whereby interference that may occur in the layout between the operating mechanism and the like and the input line and the output line can be reduced.

Alternatively, as shown in fig. 3 to 6, the operation mechanism is provided on the left side of the output terminal 120 and the input terminal 110, so that the operation mechanism can have a large layout space and ensure stability during transmission. The operating mechanism comprises a handle 140 and an actuating mechanism 170, wherein the handle 140 is arranged in the shell 100, the actuating mechanism 170 is arranged in the shell 100, and the handle 140 is in transmission connection with the movable contact assembly 200 through the actuating mechanism 170. Considering that the side of the housing 100 provided with the input terminal 110 and the output terminal 120 is used for plugging into a chassis for wiring, the handle 140 and the output terminal 120 (the input terminal 110) may be respectively provided on opposite sides of the housing 100, for example, as shown in fig. 1 to 6, the handle 140 is located on the left side of the housing 100, and the output terminal 120 and the input terminal 110 are located on the right side of the housing 100. An action mechanism 170 and a moving contact assembly 200 are arranged between the two, and a fixed contact assembly 210 is arranged on the moving path of the moving contact assembly 200, so that the two can be contacted and closed when needed.

Optionally, as shown in fig. 1 to 6, the housing 100 is a rectangular parallelepiped structure, so that the housing 100 of the rectangular parallelepiped structure has a length direction 101, a height direction 102, and a width direction 103, when the components are disposed in the housing 100, the handle 140, the actuating mechanism 170, and the movable contact assembly 200 may be sequentially disposed along the length direction 101 of the housing 100, the handle 140, the actuating mechanism 170, and the movable contact assembly 200 are sequentially connected in a transmission manner as required, and the fixed contact assembly 210 is disposed on a movement path of the movable contact assembly 200, for example, the fixed contact assembly 210 is located below the movable contact assembly 200. The input terminals 110 and the output terminals 120 are sequentially arranged along the height direction 102 of the housing 100, the input terminals 110 and the output terminals 120 may be arranged along the length direction 101 of the housing 100 in an order that the input terminals 110 correspond to the movable contact assembly 200, and the output terminals 120 correspond to the fixed contact assembly 210, so that the situation that the input lines and the output lines intersect in the housing 100 can be avoided. Similarly, the moving contact assembly 200 and the fixed contact assembly 210 may also be arranged along the height direction 102 of the housing 100.

Optionally, as shown in fig. 3 to 6, the circuit breaker further includes a tripping mechanism 180 disposed in the housing 100, and the tripping mechanism 180 corresponds to the actuating mechanism 170, so that when tripping is required, the tripping mechanism 180 is actuated to push the actuating mechanism 170 to drive the movable contact assembly 200 to move toward the tripping direction, thereby implementing tripping and tripping of the circuit breaker. The trip mechanism 180 may be an electromagnetic trip, a hydraulic trip, or the like. When the tripping mechanism 180 is arranged, the position of the pushed end of the actuating mechanism 170 needs to correspond to that of the actuating mechanism 180, that is, when the actuating mechanism 170 is in the switching-on position, the telescopic end of the tripping mechanism 180 corresponds to the pushed end of the actuating mechanism 170, and at this time, when needed, the telescopic end of the tripping mechanism 180 extends out, the pushed end is pushed, and the actuating mechanism 170 is driven to move, so that the circuit breaker is switched off. Because the front end space is large, as shown in fig. 3 or fig. 5, the trip mechanism 180 can be obliquely placed in the housing 100, and the housing 100 of the circuit breaker can be flexibly adjusted in size by adjusting the inclination angle of the trip mechanism 180. For example: a straight line in the extending and retracting direction 181 of the trip mechanism is disposed at an acute angle a with respect to a straight line in the longitudinal direction 101 of the housing 100.

Optionally, as shown in fig. 2 to 6, the circuit breaker further includes a locking member 190 disposed on the housing 100, so that, in the process of plugging or unplugging the housing 100 of the circuit breaker into the chassis, the movement of the operating mechanism in the closing direction may be limited by the locking member 190, thereby preventing the operating mechanism from being accidentally closed in the plugging process, and improving the safety during installation. In addition, after the shell 100 of the circuit breaker is inserted into the case in place, the circuit breaker can be locked by matching the locking piece 190 with the case, so that the circuit breaker is limited, and the potential safety hazard caused by the fact that the circuit breaker is accidentally separated from the case in the using process is avoided.

Optionally, as shown in fig. 3 to 6, the circuit breaker further includes a thermal release 220, so that when a load in a load loop connected to the circuit breaker is large, the generated temperature can be sensed in a manner that the thermal release 220 is in contact with the flexible connection line 150, and when the temperature is higher than a threshold, the thermal release 220 drives the actuating mechanism 170, so that the actuating mechanism 170 moves to drive the operating mechanism to open, that is, when the actuating mechanism 170 is in a closing state, the positions of the actuating mechanism 170 and the thermal release 220 correspond to each other. The thermal release 220 may be a bimetal, for example, made of a material with a thermal expansion coefficient, so that when the temperature rises, the bimetal is deformed by thermal expansion, and then drives the actuating mechanism 170 to move, so that the actuating mechanism 170 is opened.

Optionally, as shown in fig. 2 to 6, the circuit breaker further includes an arc extinguisher 230 disposed in the housing 100, the arc extinguisher 230 is located between the movable contact assembly 200 and the input terminal 110, and the arc extinguisher 230 is disposed corresponding to the movable contact assembly 200 and the fixed contact assembly 210. Namely, the arc extinguisher 230 is arranged at the opening of the static contact component 210 and the moving contact component 200 in the opening state, so that the arc generated by the arc extinguisher 230 is rapidly extinguished in the opening process, the electrical loss of the arc to the circuit breaker is reduced, and the service life of the circuit breaker is prolonged.

Optionally, as shown in fig. 1 to 6, the circuit breaker further includes a signal terminal 130 disposed on the housing 100, and in order to improve the convenience of wiring the signal terminal 130, the input terminal 110, and the output terminal 120 may be disposed on the same side of the housing 100, so that the wiring of the circuit breaker is at the rear end, and the convenience of the front handle 140 during operation is improved. Connect signal terminal 130 with stationary contact subassembly 210, so, alright gather the circuit information of load circuit through signal terminal 130, signal terminal 130 is connected with outside signal connection row 131, and then handles and the analysis by external host computer, from this, the security and the monitorable nature of further improvement circuit breaker.

The handle 140 may be rotatably disposed on the housing 100, and the handle 140 may also be connected to the operating mechanism through a connecting rod, so that the handle 140 is rotated to drive the operating mechanism to open and close; as shown in fig. 3 to 6, the handle 140 may be slidably disposed on the housing 100, and the handle 140 may still be connected to the operating mechanism through a connecting rod, so as to realize opening and closing of the operating mechanism.

When the case 100 of the circuit breaker is a rectangular parallelepiped structure, because the output terminal 120 no longer occupies the front end space, the setting position of the handle 140 does not need to be limited by the position of the output terminal 120, and therefore the setting position of the handle 140 may be sequentially set along the width direction of the case 100 of the circuit breaker, for example, may be located at a position closer to the upper side (as shown in fig. 3 and 4), a position closer to the middle (as shown in fig. 5 and 6), or a position closer to the lower side, so that the environment-adapting capability of the circuit breaker can be improved, and the use requirements for different environments can be met.

The above description is only a preferred 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 (10)

1. A circuit breaker is characterized by comprising a shell, an operating mechanism, a movable contact component, a fixed contact component, an input terminal and an output terminal, wherein the operating mechanism, the movable contact component, the fixed contact component, the input terminal and the output terminal are arranged on the shell; the operating mechanism is in transmission connection with the moving contact assembly, and drives the moving contact assembly and the static contact assembly to switch on or switch off; the input terminal and the output terminal are arranged on the same side of the shell at intervals, the input terminal is connected with the moving contact component, the output terminal is connected with the static contact component, and the circuit breaker is used for being plugged in a case through the input terminal and the output terminal.

2. The circuit breaker of claim 1, wherein the housing has a square configuration, the input terminals for mating with an input terminal row of the enclosure, and the output terminals for mating with an output terminal row of the enclosure.

3. The circuit breaker of claim 1, further comprising a stationary contact connection line, the stationary contact assembly being connected to the output terminal through the stationary contact connection line.

4. The circuit breaker of claim 1, wherein the operating mechanism includes a handle and an actuating mechanism disposed in the housing, the handle drivingly connected to the movable contact assembly through the actuating mechanism, the handle and the output terminal being located on opposite sides of the housing.

5. The circuit breaker according to claim 4, wherein said housing is a rectangular parallelepiped structure, said handle, said actuator, said movable contact assembly are arranged in order along a length direction of said housing, and said input terminal and said output terminal are arranged in order along a height direction of said housing.

6. The circuit breaker of claim 5, further comprising a tripping mechanism disposed in the housing, wherein the tripping mechanism corresponds to the actuating mechanism for pushing the actuating mechanism to open the moving contact assembly, and a telescopic direction of the tripping mechanism is disposed at an acute angle with a length direction of the housing.

7. The circuit breaker of claim 5, further comprising a locking member disposed on the housing, wherein the locking member is configured to cooperate with the chassis to lock when the housing is inserted into the chassis.

8. The circuit breaker of claim 2, further comprising a flexible connection line, wherein the input terminal is connected to the movable contact assembly via the flexible connection line; the hot release is in contact with the soft connecting line and corresponds to the operating mechanism.

9. The circuit breaker of claim 1, further comprising an arc extinguisher disposed in the housing, the arc extinguisher being located between the movable contact assembly and the input terminal, and the arc extinguisher being disposed in correspondence with the movable contact assembly and the stationary contact assembly.

10. The circuit breaker of claim 1, further comprising a signal terminal disposed on the housing, wherein the signal terminal and the input terminal are located on the same side of the housing, and the signal terminal is connected to the stationary contact assembly.

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