Single-pole circuit breaker

Abstract

The application discloses a single-pole circuit breaker, which comprises a circuit breaker body, a main circuit input terminal, a main circuit output terminal and a switch assembly, the main circuit input terminal, the switch assembly and the main circuit output terminal are connected to form a main circuit; a clamping groove is arranged at the bottom of the circuit breaker body for mounting the circuit breaker body on a guide rail; a circuit control panel is arranged in the circuit breaker body and has a first voltage detection terminal and a second voltage detection terminal, the first voltage detection terminal is electrically connected to the main circuit; and a power taking component is arranged on the circuit breaker body, one end of the power taking component is electrically connected to the second voltage detection terminal, and the other end of the power taking component is arranged in the clamping groove to be electrically connected to the guide rail when the circuit breaker body is mounted on the guide rail, the guide rail is connected to a power supply of another pole in a grounded mode, so that a voltage difference is formed between the first voltage detection terminal and the second voltage detection terminal. The single-pole circuit breaker provided by the application is convenient for voltage detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of single-pole circuit breaker, in particular to a single-pole circuit breaker. BACKGROUND

[0002] The voltage detection must have two terminals to realize the positive and negative voltage difference, and the single-pole circuit breaker in the prior art has only one power line, so that the voltage detection is difficult to realize. SUMMARY

[0003] The main purpose of the present application is to provide a single-pole circuit breaker which is convenient to realize voltage detection.

[0004] To achieve the above purpose, the single-pole circuit breaker comprises:

[0005] A circuit breaker body has a main circuit input terminal, a main circuit output terminal and a switch assembly, the switch assembly is connected between the main circuit input terminal and the main circuit output terminal, the connection line of the main circuit input terminal, the switch assembly and the main circuit output terminal is a main circuit, and the switch assembly is used for controlling the connection or disconnection between the main circuit input terminal and the main circuit output terminal; the bottom of the circuit breaker body is provided with a clamping groove for mounting the circuit breaker body on a guide rail;

[0006] A circuit control board is arranged in the circuit breaker body, the circuit control board has a first voltage detection terminal and a second voltage detection terminal, and the first voltage detection terminal is electrically connected to the main circuit; and

[0007] A power taking part is arranged on the circuit breaker body, one end of the power taking part is electrically connected to the second voltage detection terminal, and the other end of the power taking part is arranged in the clamping groove, so as to be electrically connected with the guide rail when the circuit breaker body is mounted on the guide rail, so as to form a voltage difference between the first voltage detection terminal and the second voltage detection terminal.

[0008] In an embodiment, the power taking part is a conductive spring piece.

[0009] In an embodiment, the clamping groove has a bottom wall and two side walls connected to the bottom wall and oppositely arranged, one end of the two side walls away from the bottom wall forms an opening, the opening faces the bottom wall, and the conductive spring piece is arranged in the clamping groove from the bottom wall.

[0010] In an embodiment, the bottom wall is provided with a first through hole near one of the side walls for the conductive spring piece to pass through, the side wall near the first through hole is provided with a second through hole, one end of the conductive spring piece is fixed to the circuit control board, and the other end of the conductive spring piece is inserted into the second through hole after passing through the first through hole.

[0011] In an embodiment, the card slot is trapezoidal from the opening to the bottom wall, or the two side walls are relatively close from the bottom wall to the opening.

[0012] In an embodiment, the bottom of the circuit breaker body has a first mounting seat and a second mounting seat, which are oppositely arranged, and the first mounting seat, the second mounting seat and the bottom of the circuit breaker body define the card slot; the power taking member is arranged close to the first mounting seat or the second mounting seat.

[0013] In an embodiment, the circuit breaker body is provided with a mounting column, and the conductive elastic sheet is provided with a fixing hole, and the conductive elastic sheet is fastened to the mounting column by screwing the screw through the fixing hole and the mounting column.

[0014] In an embodiment, one end of the mounting column is fixed to one side wall of the circuit breaker body, and the other end of the mounting column is arranged through the circuit control board, and the other end of the mounting column is provided with a screw hole for screwing the screw.

[0015] In an embodiment, the conductive elastic sheet is provided with a mounting plate, the mounting plate is connected perpendicularly to the conductive elastic sheet, the fixing hole is arranged on the mounting plate, the plate surface of the conductive elastic sheet faces the side wall of the mounting column, and the mounting plate is arranged on the end of the mounting column away from the circuit control board.

[0016] In an embodiment, the first voltage detection end is electrically connected to the main circuit input terminal or the main circuit output terminal.

[0017] Or the first voltage detection end is electrically connected between the main circuit input terminal and the switch assembly.

[0018] Or the first voltage detection end is electrically connected between the main circuit output terminal and the switch assembly.

[0019] Or the first voltage detection end is electrically connected to the switch assembly.

[0020] In an embodiment, the bottom of the circuit breaker body further has an arc striking outlet hole, and the arc striking outlet hole is arranged on the bottom wall of the card slot.

[0021] The technical scheme of the present application connects the first voltage detection end on the circuit control board to the main circuit to form one of the positive and negative electrodes of the voltage detection, connects the second voltage detection end on the circuit control board to a power taking member, and connects the power taking member to the guide rail of the power distribution equipment to form the other of the positive and negative electrodes of the voltage detection, so that the two terminals of the voltage detection form a voltage difference, thereby realizing the detection of the voltage of the circuit breaker. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only show some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from the drawings shown without any creative effort.

[0023] Figure 1 Fig. 1 is a perspective view of a single-pole circuit breaker according to an embodiment of the present application;

[0024] Figure 2 Fig. 2 is another view of the single-pole circuit breaker of Fig. 1; Figure 1

[0025] Figure 3 Fig. 3 is a schematic view of a mounting structure of the single-pole circuit breaker and a guide rail according to an embodiment of the present application;

[0026] Figure 4 Fig. 4 is another view of the mounting structure of Fig. 3; Figure 3

[0027] Figure 5 Fig. 5 is a schematic view of a mounting structure of a conductive spring according to an embodiment of the present application.

[0028] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without any creative effort fall within the scope of the present application.

[0030] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0031] ​​In addition, the descriptions related to "first", "second" and the like in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0032] The present application provides a single-pole circuit breaker.

[0033] Referring to Figures 1 to 4 In an embodiment, the single-pole circuit breaker provided by the present application comprises:

[0034] A circuit breaker body 100 has a main circuit input terminal, a main circuit output terminal 110 and a switch assembly 120 connected between the main circuit input terminal and the main circuit output terminal 110, the connection line of the main circuit input terminal, the switch assembly 120 and the main circuit output terminal forms a main circuit, of course, when a new line, component or element is connected in series on the connection line of the main circuit input terminal, the switch assembly 120 and the main circuit output terminal, it also forms part of the main circuit, the switch assembly 120 is used to control the connection or disconnection between the main circuit input terminal and the main circuit output terminal 110; The bottom of the circuit breaker body 100 is provided with a clamping groove 101 for mounting it on the guide rail 50 of the power distribution equipment;

[0035] A circuit control board (not shown in the figure) is arranged in the circuit breaker body 100, the circuit control board has a first voltage detection terminal and a second voltage detection terminal, the first voltage detection terminal is electrically connected to the main circuit; and

[0036] A power taking part 200 is arranged on the circuit breaker body 100, one end of the power taking part 200 is electrically connected to the second voltage detection terminal, the other end of the power taking part 200 is arranged in the clamping groove 101, so as to be electrically connected with the guide rail 50 when the circuit breaker body 100 is mounted on the guide rail 50, so as to form a voltage difference between the first voltage detection terminal and the second voltage detection terminal.

[0037] In this embodiment, the switch assembly 120 is mainly a manual switch, which is controlled manually to realize opening and closing. Of course, the switch assembly 120 can also include a driving assembly to realize automatic opening and closing. The circuit control board can be installed along the side wall of the circuit breaker main body 100 to reduce the space occupation. The circuit control board can be provided with a voltage sampling circuit, a current sampling circuit, an electric quantity metering circuit, an overcurrent protection circuit, a wireless module, a motor driving circuit, etc., and is not limited. The first voltage detection end and the second voltage detection end are two voltage detection ends on the circuit control board, which are connected with the voltage sampling circuit thereon and serve as detection signal input ports.

[0038] It should be noted that the first voltage detection end is electrically connected to the main circuit. Specifically, the first voltage detection end can be electrically connected to the main circuit input terminal or the main circuit output terminal 110; the first voltage detection end can be electrically connected between the main circuit input terminal and the switch assembly 120; the first voltage detection end can be electrically connected between the main circuit output terminal 110 and the switch assembly; the first voltage detection end can also be electrically connected to the switch assembly 120, and is not limited, as long as the electricity can be taken from the main circuit. That is, the first voltage detection end can be electrically connected to any node of the main circuit. In actual application, the electrical connection mentioned herein can be directly connected to the target component or target position, or can be indirectly connected, for example, connected to other places electrically connected to the target component or target position, as long as the electrical connection is electrically connected. In addition, it should be noted that the main circuit input terminal and the main circuit output terminal 110 are not limited to being used as input and output in actual application. According to the characteristics of the circuit breaker, the main circuit input terminal and the main circuit output terminal 110 can be used as input or output in actual application. The naming here is only for easy understanding, and is not limited to the actual use.

[0039] Since the embodiment is for voltage detection of a single-pole circuit breaker, the single-pole circuit breaker can be a single-pole DC circuit breaker or a single-pole AC circuit breaker, both of which can adopt the scheme of the embodiment. For single-pole detection, two terminals (different polarities) must be used to realize the positive and negative voltage difference, i.e., the positive terminal and a ground reference signal, to realize voltage detection. In the embodiment, the first voltage detection terminal is connected to the main circuit to form one polarity, and then the power taking member 200 connected to the second voltage detection terminal is used to realize the connection of the other polarity. It should be noted that the circuit breaker is generally used in power distribution equipment such as an electric control box, a power supply device, and a power distribution cabinet. The power distribution equipment generally has a guide rail 50 for mounting the circuit breaker or other electrical switches. In addition, the guide rail 50 is connected to one of the positive and negative poles in the power distribution equipment. For example, in a DC power distribution, the DC positive pole of the power supply is generally connected to the ground. Therefore, in general, the guide rail 50 itself is grounded and connected to the DC positive pole of the power supply. The electric control box is grounded, forming a reference ground. Therefore, as long as it is installed on the guide rail 50, the voltage polarities of the first voltage detection terminal and the second voltage detection terminal are different, and a voltage difference can be formed. When the circuit breaker is installed on the guide rail 50 in the power distribution equipment, the power taking member 200 is connected to one of the positive and negative poles of the power supply in the power distribution equipment through the guide rail 50, thereby forming a voltage difference between the first voltage detection terminal and the second voltage detection terminal on the circuit control board, and realizing the detection of the voltage of the circuit breaker. It should be further noted that in fact, the voltage polarities of the first voltage detection terminal and the second voltage detection terminal are not limited, and both positive and negative polarities can be selected because the voltage is the voltage difference between the two terminals.

[0040] In the embodiment, the power taking member 200 can be a conductive wire, a metal sheet, or an elastic contact that can be set to be flexible. Here, it is not limited as long as it can electrically connect the second voltage detection terminal and the guide rail 50. In the embodiment, the power taking member 200 is preferably a conductive spring sheet. The conductive spring sheet is easy to process and install, occupies small space, and has elasticity. When the circuit breaker is installed on the guide rail 50, it will not increase the installation difficulty due to the large rigidity. In the embodiment, the power taking member 200 can be welded on the circuit board or fixed by a mounting seat. In an embodiment, the conductive spring sheet can be detachably mounted on the circuit breaker body 100. This mounting method can replace the conductive spring sheet when the conductive spring sheet has poor conductivity, which is convenient for maintenance. Compared with welding on the circuit control board, the conductive spring sheet is not directly rigidly connected to the circuit control board after installation, which avoids affecting the circuit control board or being stressed and squeezed off during sliding and installation.

[0041] It can be understood that by electrically connecting the first voltage detection end on the circuit control board between the main circuit input terminal and the switch assembly 120, one of the positive and negative electrodes of the voltage detection is formed, the second voltage detection end on the circuit control board is connected with the power taking member 200, and grounding is realized through the power taking member 200, so that the two terminals of the voltage detection form a voltage difference, thereby realizing the detection of the voltage of the circuit breaker.

[0042] In an embodiment, in combination with reference to Figure 5 The circuit breaker body 100 is provided with a mounting column 150, and the conductive elastic sheet is provided with a fixing hole. A screw is screwed with the mounting column 150 through the fixing hole, so as to fasten the conductive elastic sheet to the mounting column 150. In this embodiment, the mounting column 150 and the screw are matched to simply and effectively realize the detachable mounting of the conductive elastic sheet on the circuit breaker body 100.

[0043] Further, one end of the mounting column 150 is fixed to one side wall of the circuit breaker body 100, and the other end passes through the circuit control board. The other end of the mounting column 150 is provided with a screw hole for screwing with the screw. In this embodiment, the conductive elastic sheet is located between the circuit control board and the side wall of the circuit breaker body 100 close to the circuit control board. In this way, the mounting column 150 also positions the circuit control board, and avoids interfering with the installation of other components of the circuit breaker body 100, such as the switch assembly 120 and the arc striking assembly.

[0044] Further, the conductive elastic sheet is provided with a mounting plate 210, the mounting plate 210 is connected perpendicularly to the conductive elastic sheet, the fixing hole is arranged on the mounting plate 210, the plate surface of the conductive elastic sheet faces the side wall of the mounting column 150, and the mounting plate 210 is arranged on the end of the mounting column 150 away from the circuit control board. In this way, the conductive elastic sheet can be replaced when the conductive property is poor, which is convenient for maintenance. Moreover, compared with being welded on the circuit control board, the mounting plate 210 is not directly and rigidly connected with the circuit control board after being mounted, so as to avoid affecting the circuit control board or being pressed off by stress during sliding and installation.

[0045] In an embodiment, the clamping groove 101 has a bottom wall and two side walls connected to the bottom wall and arranged opposite to each other. The ends of the two side walls away from the bottom wall form openings, the openings face the bottom wall, and the conductive elastic sheet can be arranged in the clamping groove 101 from the bottom wall. The structure of the clamping groove 101 in this embodiment is through in the thickness direction of the circuit breaker body 100, so as to conveniently mount the circuit breaker body 100 on the guide rail 50. In this embodiment, the power taking member 200 can be arranged to extend from the bottom wall to the clamping groove 101.

[0046] In the embodiment, further, the bottom wall is provided with a first through hole for the conductive elastic sheet to pass through near the side wall, and a second through hole is provided on the side wall near the first through hole, one end of the conductive elastic sheet is fixed on the circuit control board, and the other end of the conductive elastic sheet is inserted into the second through hole after passing through the first through hole. Wherein, both ends of the conductive elastic sheet are located in the circuit breaker body 100.

[0047] In the embodiment, further, the clamping groove 101 is trapezoidal from the opening to the bottom wall, or the two side walls are relatively close from the bottom wall to the opening. It can be understood that in the embodiment, when the circuit breaker body 100 is slidingly installed on the guide rail 50, the bottom wall and the two side walls are relatively located on both sides of the guide rail 50, forming a limit, and should not be separated, ensuring the reliability after installation.

[0048] In an embodiment, the power taking part 200 is arranged at the edge of the clamping groove 101, which can avoid the power taking part 200 from interfering with the installation of the circuit breaker body 100 and the guide rail 50, or causing poor sliding after installation.

[0049] In an embodiment, the bottom of the circuit breaker body 100 has a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are arranged opposite to each other, and the first mounting seat, the second mounting seat and the bottom of the circuit breaker body 100 define the clamping groove 101.

[0050] Wherein, the power taking part 200 is arranged near the first mounting seat or the second mounting seat, which can avoid the power taking part 200 from interfering with the installation of the circuit breaker body 100 and the guide rail 50, or causing poor sliding after installation.

[0051] In an embodiment, the bottom of the circuit breaker body 100 also has an arc leading hole 102, and the arc leading hole 102 is arranged on the bottom wall of the clamping groove 101. The arc leading hole 102 is arranged in the clamping groove 101, which can discharge the arc to the guide rail 50 and flow into the ground wire, and avoid affecting other elements arranged on other sides of the circuit breaker body 100.

[0052] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made according to the contents of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A single-pole circuit breaker, characterized by, The circuit breaker comprises: a circuit breaker body having a main circuit input terminal, a main circuit output terminal and a switch assembly connected between the main circuit input terminal and the main circuit output terminal, a connection line of the main circuit input terminal, the switch assembly and the main circuit output terminal being a main circuit, the switch assembly being used for controlling the main circuit input terminal and the main circuit output terminal to be connected or disconnected; a clamping groove is arranged on the bottom of the circuit breaker body for mounting the circuit breaker on a guide rail of a power distribution device, the clamping groove has a bottom wall and two side walls connected to the bottom wall and oppositely arranged, the two side walls are open at the ends away from the bottom wall, and the openings are opposite to the bottom wall, and an arc extraction hole is further arranged on the bottom of the circuit breaker body, the arc extraction hole is arranged on the bottom wall of the clamping groove; a circuit control board arranged in the circuit breaker body, the circuit control board has a first voltage detection terminal and a second voltage detection terminal, the first voltage detection terminal is electrically connected to the main circuit for connecting one of the positive and negative poles of the power distribution device; and a power taking member, the power taking member is a conductive spring sheet arranged on the circuit breaker body, the conductive spring sheet is arranged in the clamping groove from the bottom wall, one end of the conductive spring sheet is electrically connected to the second voltage detection terminal, and the other end of the conductive spring sheet is arranged in the clamping groove for abutting against the guide rail, the guide rail is connected to the other of the positive and negative poles of the power distribution device, so that a voltage difference is formed between the first voltage detection terminal and the second voltage detection terminal; the bottom wall is provided with a first through hole near one of the side walls for the conductive spring sheet to pass through, a second through hole is arranged on the side wall close to the first through hole, one end of the conductive spring sheet is fixed to the circuit control board, and the other end of the conductive spring sheet is inserted into the second through hole after passing through the first through hole.

2. The single-pole circuit breaker of claim 1, wherein, The clamping groove is arranged in a trapezoidal shape from the opening to the bottom wall or the two side walls are relatively close to each other from the bottom wall to the opening.

3. The single-pole circuit breaker of claim 1 or 2, wherein, The bottom of the circuit breaker body has a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are oppositely arranged, and the first mounting seat, the second mounting seat and the bottom of the circuit breaker body define the clamping groove; the power taking member is arranged close to the first mounting seat or the second mounting seat.

4. The single-pole circuit breaker of claim 1, wherein, A mounting column is arranged on the circuit breaker body, a fixing hole is arranged on the conductive spring sheet, and a screw is screwed through the fixing hole and the mounting column to fasten the conductive spring sheet to the mounting column.

5. The single-pole circuit breaker of claim 4 wherein, One end of the mounting column is fixed to one side wall of the circuit breaker body, and the other end of the mounting column passes through the circuit control board, and the other end of the mounting column is provided with a screw hole for screwing with the screw.

6. The single-pole circuit breaker of claim 5, wherein, An installation plate is arranged on the conductive spring sheet, the installation plate is perpendicularly connected to the conductive spring sheet, the fixing hole is arranged on the installation plate, a plate surface of the conductive spring sheet faces a side wall of the mounting column, and the installation plate is attached to the end of the mounting column away from the circuit control board.

7. The single-pole circuit breaker of claim 1, wherein The first voltage detection terminal is electrically connected to the main circuit input terminal or the main circuit output terminal. Or the first voltage detection end is electrically connected between the main circuit input terminal and the switch assembly. Or the first voltage detection end is electrically connected between the main circuit output terminal and the switch assembly. Or the first voltage detection end is electrically connected to the switch assembly.

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