Bipolar circuit breaker

Abstract

The utility model provides a bipolar circuit breaker, which comprises an outer shell, a first pole conducting circuit and a second pole conducting circuit, and is characterized in that a first wire inlet end and a first wire outlet end are respectively positioned on the same side relative to a second wire inlet end and a second wire outlet end; the first pole conducting circuit and the second pole conducting circuit extend in the outer shell side by side, the first wire inlet end and the first wire outlet end are arranged correspondingly, the second wire inlet end and the second wire outlet end are arranged correspondingly, a wiring circuit between the wire inlet ends and the wire outlet ends is short, the use amount of copper materials serving as conducting circuits is small, and the cost is low. Raw materials can be saved, the size of a finished product is small, and wiring of the wire inlet terminal and the wire outlet terminal is very convenient; and the two phases of conductive circuits are arranged in parallel without crossing, so that the mutual influence of heat radiation between the two phases of conductive circuits is small, and the circuits are more stable and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to an improvement on the routing structure of a conductive line of a bipolar circuit breaker. Background Art

[0002] The existing circuit breaker used at the incoming end of the distribution box is usually a two-pole circuit breaker, one pole is connected to the A-phase power line, and the other pole is connected to the B-phase power line. This circuit breaker generally adopts a routing method in which the two-phase conductive lines are crossed, which leads to an increase in the line length of the routing method, thereby increasing the amount of copper material used as the conductive line; and the conductive lines of the two phases cross each other, so that the thermal radiation between the conductive lines of the two phases has a great influence on each other; and the wiring of this routing method is complicated, and the volume of the finished product is large. Utility Model Content

[0003] Therefore, in view of at least one of the above problems, the utility model provides a double-pole circuit breaker.

[0004] The utility model is implemented by the following scheme:

[0005] The utility model provides a double-pole circuit breaker, comprising an outer shell, a first-pole conductive circuit and a second-pole conductive circuit, wherein the first-pole conductive circuit is extended and arranged in the outer shell and has a first incoming terminal and a first outgoing terminal, and the second-pole conductive circuit is extended and arranged in the outer shell and has a second incoming terminal and a second outgoing terminal, and the first-pole conductive circuit and the second-pole conductive circuit also respectively have a first contact system and a second contact system, wherein the first incoming terminal and the first outgoing terminal are respectively located on the same side relative to the second incoming terminal and the second outgoing terminal, so that the first-pole conductive circuit and the second-pole conductive circuit are extended and arranged in parallel in the outer shell, and the extension direction of the first outgoing terminal and the second outgoing terminal is defined as a longitudinal direction, and the first contact system and the second contact system are arranged in parallel and transversely in the outer shell and are roughly in a span range between the first outgoing terminal and the second outgoing terminal, and the first contact system and the second contact system are oriented in opposite directions.

[0006] In one embodiment, the first contact system and the second contact system respectively have a first breaking motion trajectory and a second breaking motion trajectory, and the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory.

[0007] In one embodiment, the first contact system includes a first moving contact and a first stationary contact; the second contact system includes a second moving contact and a second stationary contact; the first stationary contact is located on the top of the first moving contact, and the second moving contact is located on the top of the second stationary contact, so that the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory.

[0008] In one embodiment, the double-pole circuit breaker further includes an operating mechanism, which is laterally mounted on the first contact system and the second contact system, and the rotational movement of the operating mechanism can simultaneously actuate the first moving contact and the second moving contact to move in opposite directions, thereby manipulating the first contact system and the second contact system to be synchronously connected or disconnected.

[0009] In one embodiment, the extension direction of the first outlet terminal seat and the second outlet terminal seat is perpendicular to the movement plane of the first disconnecting movement trajectory and the second disconnecting movement trajectory, so that the operating direction of the operating mechanism handle is also perpendicular to the extension direction of the first outlet terminal and the second outlet terminal.

[0010] In one embodiment, the routing direction of the first-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - right - downward - left - downward"; the routing direction of the second-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - left - downward - right - downward".

[0011] In one embodiment, the first-pole conductive line further includes a first front flexible connection, a first overcurrent releaser and a first rear flexible connection, the first incoming line end, the first front flexible connection, the first overcurrent releaser, the first rear flexible connection, the first contact system and the first outgoing line end are connected in sequence, the first incoming line end, the first rear flexible connection and the first outgoing line end are arranged vertically up and down, and the first front flexible connection, the first overcurrent releaser and the first contact system are arranged horizontally left and right, so that the routing direction of the first-pole conductive line from the incoming line to the outgoing line is roughly in a bending extension arrangement of "downward-rightward-downward-leftward-downward". The second-pole conductive circuit also includes a second contact system, a second front flexible connection, a second overcurrent releaser, a second rear flexible connection, the second incoming line end, the second contact system, the second front flexible connection, the second overcurrent releaser, the second rear flexible connection and the second outgoing line end are connected in sequence, the second incoming line end, the second front flexible connection and the second outgoing line end are arranged vertically, and the second contact system, the second overcurrent releaser and the second rear flexible connection are arranged horizontally from left to right, so that the routing direction of the second-pole conductive circuit from the incoming line to the outgoing line is roughly in the bending extension arrangement of "downward - left - downward - right - downward".

[0012] In one embodiment, the first incoming line end includes a first incoming line terminal block and a first conductive copper busbar, and the second incoming line end includes a second incoming line terminal block and a second conductive copper busbar.

[0013] In one embodiment, the first outlet terminal and the second outlet terminal are spaced side by side to expose a first side of the outer shell, the first inlet terminal and the second inlet terminal are spaced side by side to expose a second side of the outer shell, and the second side is on the opposite side to the first side.

[0014] The technical solution provided by the utility model has the following technical effects:

[0015] The utility model provides a double-pole circuit breaker, wherein the first incoming terminal and the first outgoing terminal are respectively located on the same side relative to the second incoming terminal and the second outgoing terminal, so that the first-pole conductive line and the second-pole conductive line are arranged in parallel in the outer shell, the first contact system and the second contact system are arranged in parallel and transversely in the outer shell, and are roughly in the span range between the first outgoing terminal and the second outgoing terminal, and the first contact system and the second contact system are in opposite directions. The first incoming terminal is arranged correspondingly to the first outgoing terminal, and the second incoming terminal is arranged correspondingly to the second outgoing terminal, so that the wiring line between the incoming terminal and the outgoing terminal is short, the amount of copper material used as the conductive line is small, the raw materials can be saved, the volume of the finished product is small, and the wiring of the incoming and outgoing terminals is also very convenient; the conductive lines of the two phases are arranged in parallel without crossing each other, so that the thermal radiation between the conductive lines of the two phases has little mutual influence, and the line is more stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional diagram of a double-pole circuit breaker of this embodiment;

[0017] Figure 2 is a three-dimensional diagram of the first conductive circuit and the second conductive circuit of this embodiment;

[0018] Figure 3 is a front view of the first conductive circuit and the second conductive circuit of this embodiment;

[0019] Figure 4 is a schematic diagram of the directions of the first-pole conductive circuit and the second-pole conductive circuit of this embodiment;

[0020] Figure 5 Schematic diagram of the operating mechanism of this embodiment actuating the first contact system and the second contact system simultaneously. DETAILED DESCRIPTION

[0021] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0022] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 1-5 As shown, this embodiment provides a bipolar circuit breaker, whose two poles are connected to phase A and phase B respectively, and the bipolar circuit breaker includes an outer shell 30, and the outer shell 30 includes a base 31 and a middle frame 32, and may also include an upper cover (not shown) installed above the middle frame 32; the handle of the circuit breaker operating mechanism 40 is exposed from the outer shell 30, so as to facilitate manual execution of the circuit breaker. The bipolar circuit breaker also includes a first-pole conductive circuit and a second-pole conductive circuit, and the first-pole conductive circuit (connected to phase A) includes a first incoming terminal 11 (the first incoming terminal 11 includes a first incoming terminal seat 111 and a first conductive copper bus 112 that are fixedly electrically connected together), a first front flexible connection 14, a first overcurrent release 15, a first rear flexible connection 16, a first contact system 17 and a first outgoing terminal 12 connected in sequence. The second pole conductive circuit (connected to phase B electricity) includes a second incoming line terminal 21 (the second incoming line terminal 21 includes a second incoming line terminal seat 211 and a second conductive copper bus 212 fixedly electrically connected together), a second contact system 24, a second front flexible connection 25, a second overcurrent release 26, a second rear flexible connection 27 and a second outgoing line terminal 22 connected in sequence.

[0024] The first pole conductive circuit and the second pole conductive circuit are extended and arranged in the outer shell 30. The first inlet terminal 11, the first outlet terminal 12, the second inlet terminal 21 and the second outlet terminal 22 are all exposed from the outer shell 30 to facilitate wiring. The first inlet terminal 11 and the second inlet terminal 21 correspond to the first outlet terminal 12 and the second outlet terminal 22, respectively, that is, the first inlet terminal 11 is corresponding to the first outlet terminal 12, and the second inlet terminal 21 is corresponding to the second outlet terminal 22.

[0025] The extension direction of the first outlet terminal 12 and the second outlet terminal 22 is defined as the longitudinal direction, and the first outlet terminal 12 is defined as being located longitudinally below the first inlet terminal 11, and the longitudinal below the second inlet terminal 21 is the second outlet terminal 22. The first inlet terminal 11 is defined as being located transversely to the left relative to the second inlet terminal 21, and the first outlet terminal 12 is also located transversely to the left relative to the second outlet terminal 22.

[0026] The lower side of the outer shell 30 is defined as the first side, the upper side of the outer shell 30 is defined as the second side, and the second side is located on the opposite side of the first side. The first outlet terminal 12 and the second outlet terminal 22 are arranged side by side and spaced apart to expose the first side of the outer shell 30, and the first inlet terminal 11 and the second inlet terminal 21 are arranged side by side and spaced apart to expose the second side of the outer shell 30.

[0027] The first incoming terminal 11 and the first outgoing terminal 12 are located on the same side relative to the second incoming terminal 21 and the second outgoing terminal 22, respectively, so that the first pole conductive circuit and the second pole conductive circuit are extended and arranged in parallel in the outer shell 30; the first incoming terminal 11 is corresponding to the first outgoing terminal 12, and the second incoming terminal 21 is corresponding to the second outgoing terminal 22, so that the wiring line between the incoming terminal and the outgoing terminal is short, the amount of copper material used as the conductive circuit is small, the raw materials can be saved, the volume of the finished product is small, and the wiring of the incoming and outgoing terminals is also very convenient; the conductive circuits of the two phases are parallel to each other without crossing, so that the thermal radiation between the conductive circuits of the two phases has little mutual influence, and the circuit is more stable and reliable.

[0028] like Figure 4 As shown, in the first-pole conductive line, the first incoming line terminal 11, the first rear flexible connection 16 and the first outgoing line terminal 12 are arranged vertically in an up-and-down manner, and the first front flexible connection 14, the first overcurrent releaser 15 and the first contact system 17 are arranged horizontally in a left-right manner. On the whole, the routing direction of the first-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - rightward - downward - leftward - downward".

[0029] In the second-pole conductive line, the second incoming line terminal 21, the second front flexible connection 25 and the second outgoing line terminal 22 are arranged vertically in an up-and-down manner, and the second contact system 24, the second overcurrent release 26 and the second rear flexible connection 27 are arranged horizontally in a left-right manner. On the whole, the routing direction of the second-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - left - downward - right - downward".

[0030] like Figure 1-3 As shown, the first contact system 17 and the second contact system 24 are arranged in parallel and transversely in the outer shell 30, and the first contact system 17 and the second contact system 24 are in opposite directions. In this embodiment, the first contact system 17 and the second contact system 24 are roughly in the span range between the first outlet terminal 12 and the second outlet terminal 22. The first contact system 17 and the second contact system 24 are arranged in parallel and each faces a different side, which can make full use of the width space between the first outlet terminal 12 and the second outlet terminal 22 to arrange the contact system and the operating mechanism 40, further reducing the volume of the circuit breaker.

[0031] The first contact system 17 includes a first moving contact 171 and a first stationary contact 172; the second contact system 24 includes a second moving contact 241 and a second stationary contact 242. The first contact system 17 and the second contact system 24 respectively have a first breaking motion trajectory and a second breaking motion trajectory. Specifically, the first moving contact 171 has a first breaking motion trajectory relative to the first stationary contact 172, and the second moving contact 241 has a second breaking motion trajectory relative to the second stationary contact 242, so as to realize the disconnection and conduction of the first-pole conductive circuit and the second-pole conductive circuit.

[0032] The movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory. The first static contact 172 is located on the top of the first moving contact 171, and the second moving contact 241 is located on the top of the second static contact 242, so that the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory.

[0033] In other embodiments, the first moving contact and the second moving contact can be located at the top of the first static contact and the second static contact, respectively, so that the first moving contact and the second moving contact are driven up and down synchronously to achieve connection or disconnection with the first static contact and the second static contact. In this case, the movement direction of the first breaking motion trajectory is the same as the movement direction of the second breaking motion trajectory. However, this structure occupies a large space, so the product volume is large. In this embodiment, a rotating drive member is provided between the first moving contact 171 and the second moving contact 241, so that the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory, so that the space between the first moving contact 171 and the second moving contact 241 can be fully utilized, and the product volume is smaller.

[0034] like Figure 1 , 2 , 5, especially as Figure 5 As shown, the operating mechanism 40 is transversely mounted on the first contact system 17 and the second contact system 24, and is used to manipulate the movement of the first contact system 17 and the second contact system 24. The operating mechanism 40 includes a rotating member 41. The operating mechanism 40 can simultaneously actuate the first moving contact 171 and the second moving contact 241 to move in opposite directions through the rotational movement of the rotating member 41, thereby manipulating the first contact system 17 and the second contact system 24 to be synchronously connected or disconnected. In this way, the operating mechanism 40 can simultaneously actuate the first contact system 17 and the second contact system 24, and the arrangement is compact, and the miniaturization of the product is improved.

[0035] In other embodiments, the first moving contact and the second moving contact can be moved in opposite directions by pushing the lever mechanism. However, this method has a relatively complex structure and occupies a large space. In this embodiment, the first moving contact 171 and the second moving contact 241 are simultaneously actuated to move in opposite directions by the rotation of the rotating member 41, which has a simple structure, occupies a small space, and is more compact.

[0036] The extension direction of the first outlet terminal 12 and the second outlet terminal 22 is perpendicular to the movement plane where the first breaking motion trajectory and the second breaking motion trajectory are located, so that the operating direction of the handle of the operating mechanism 40 is also perpendicular to the extension direction of the first outlet terminal 12 and the second outlet terminal 22, so that the operating mechanism 40 can swing laterally for easy operation.

[0037] Although the present invention has been specifically demonstrated and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes may be made to the present invention in form and detail without departing from the spirit and scope of the present invention as defined in the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A double-pole circuit breaker, comprising an outer shell, a first-pole conductive circuit and a second-pole conductive circuit, wherein the first-pole conductive circuit is extended and arranged in the outer shell and has a first inlet terminal and a first outlet terminal, the second-pole conductive circuit is extended and arranged in the outer shell and has a second inlet terminal and a second outlet terminal, the first-pole conductive circuit and the second-pole conductive circuit also have a first contact system and a second contact system, respectively, characterized in that: The first input terminal and the first output terminal are located on the same side relative to the second input terminal and the second output terminal, respectively, so that the first-pole conductive circuit and the second-pole conductive circuit are extended and arranged in parallel in the outer shell, and the extension direction of the first output terminal and the second output terminal is defined as the longitudinal direction. The first contact system and the second contact system are arranged in parallel and transversely in the outer shell and are roughly within the span range between the first output terminal and the second output terminal, and the first contact system and the second contact system are in opposite directions.

2. The double-pole circuit breaker according to claim 1, characterized in that: The first contact system and the second contact system respectively have a first breaking motion trajectory and a second breaking motion trajectory, and the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory.

3. The double-pole circuit breaker according to claim 2, characterized in that: The first contact system includes a first moving contact and a first stationary contact; the second contact system includes a second moving contact and a second stationary contact; the first stationary contact is located on the top of the first moving contact, and the second moving contact is located on the top of the second stationary contact, so that the movement direction of the first breaking motion trajectory is opposite to the movement direction of the second breaking motion trajectory.

4. The double-pole circuit breaker according to claim 3, characterized in that: The double-pole circuit breaker also includes an operating mechanism, which is laterally mounted on the first contact system and the second contact system. The rotational movement of the operating mechanism can simultaneously actuate the first moving contact and the second moving contact to move in opposite directions, thereby manipulating the first contact system and the second contact system to be synchronously connected or disconnected.

5. The double-pole circuit breaker according to claim 2, characterized in that: The extension direction of the first and second outlet terminal seats is perpendicular to the movement planes of the first and second breaking movement trajectories, so that the operating direction of the operating mechanism handle is also perpendicular to the extension direction of the first and second outlet terminals.

6. The double-pole circuit breaker according to claim 1, characterized in that: The routing direction of the first-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - rightward - downward - leftward - downward"; the routing direction of the second-pole conductive line from the incoming line to the outgoing line is roughly arranged in a bending extension of "downward - leftward - downward - rightward - downward".

7. The double-pole circuit breaker according to claim 6, characterized in that: The first-pole conductive line also includes a first front flexible connection, a first overcurrent releaser and a first rear flexible connection, the first incoming line end, the first front flexible connection, the first overcurrent releaser, the first rear flexible connection, the first contact system and the first outgoing line end are connected in sequence, the first incoming line end, the first rear flexible connection and the first outgoing line end are arranged vertically up and down, the first front flexible connection, the first overcurrent releaser and the first contact system are arranged horizontally left and right, so that the routing direction of the first-pole conductive line from the incoming line to the outgoing line is roughly "downward-rightward-downward-leftward" bending extension arrangement; the second The pole conductive circuit also includes a second contact system, a second front flexible connection, a second overcurrent releaser, a second rear flexible connection, the second incoming line end, the second contact system, the second front flexible connection, the second overcurrent releaser, the second rear flexible connection and the second outgoing line end are connected in sequence, the second incoming line end, the second front flexible connection and the second outgoing line end are arranged vertically, and the second contact system, the second overcurrent releaser and the second rear flexible connection are arranged horizontally from left to right, so that the routing direction of the second pole conductive circuit from the incoming line to the outgoing line is roughly "downward - left - downward - right - downward" bending extension arrangement.

8. The double-pole circuit breaker according to claim 1, characterized in that: The first incoming line end includes a first incoming line terminal seat and a first conductive copper busbar, and the second incoming line end includes a second incoming line terminal seat and a second conductive copper busbar.

9. The double-pole circuit breaker according to claim 1, characterized in that: The first outlet terminal and the second outlet terminal are spaced side by side to expose a first side edge of the outer shell, and the first inlet terminal and the second inlet terminal are spaced side by side to expose a second side edge of the outer shell, and the second side edge is located on the opposite side to the first side edge.

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