CN114334558A

CN114334558A - Circuit breaker

Info

Publication number: CN114334558A
Application number: CN202011066249.4A
Authority: CN
Inventors: 王洋; 李贤凯; 徐涛
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-12
Anticipated expiration: 2040-09-30
Also published as: CN114334558B; CN116364492A

Abstract

The invention provides a circuit breaker, and relates to the technical field of electrical switching devices; comprises a shell and a contact system arranged in the shell; the plug system is arranged in the shell and connected with the contact system; two conductive ends of the external conductive structure are inserted into the plugging system, and one of the conductive ends, the plugging system, the contact system and the other conductive end form a conductive loop. According to the invention, the plugging system is additionally arranged in the circuit breaker, the external conductive structures such as copper bars and the like are in plugging fit with the plugging system, and the external conductive structures are directly inserted into the circuit breaker during assembly, so that the assembly steps are simplified, the assembly efficiency is improved, and the subsequent disassembly and maintenance are convenient.

Description

Circuit breaker

Technical Field

The invention relates to the technical field of electrical switching devices, in particular to a circuit breaker.

Background

The circuit breaker is a switching device that is used for closing, bears and breaks the electric current under normal or unusual return circuit condition, and the circuit breaker need be connected with electrically conductive structure such as external copper bar and forms a return circuit of accomplishing, and the connection between current circuit breaker and the copper bar all adopts screw connection, needs loaded down with trivial details to carry out many places and revolves soon, and this kind of connected mode is unfavorable for the assembly of electrically conductive structure such as copper bar, does not also do not benefit to when the circuit breaker needs the maintenance of tearing open the machine in addition and removes the connection with electrically conductive structure such as copper bar.

Disclosure of Invention

The invention aims to provide a circuit breaker to solve the problem that an existing circuit breaker is inconvenient to disassemble and assemble with a copper bar.

In order to solve the technical problem, the invention provides a circuit breaker, which has the following specific technical scheme:

a circuit breaker comprising a housing and a contact system mounted within the housing; the plug system is arranged in the shell and connected with the contact system; two conductive ends of the external conductive structure are inserted into the plugging system, and one of the conductive ends, the plugging system, the contact system and the other conductive end form a conductive loop.

Furthermore, the plugging system comprises a driving mechanism and two clamping components; the two conductive ends are inserted into the two clamping assemblies in a one-to-one correspondence manner; the clamping assembly is driven by the driving mechanism to clamp the conductive end or release the clamping of the conductive end.

Further, the clamping assembly comprises a mounting frame, a conductive piece, a swinging piece and a clamping arm; the mounting frame is fixedly connected to the inner wall of the shell, and the conductive piece, the swinging piece and the clamping arm are all mounted on the mounting frame; the conductive piece is connected with the contact system and forms a clamping space with the clamping arm, and the conductive end is positioned in the clamping space; the driving mechanism drives the swinging piece to swing on the installation frame, and the clamping arm is driven by the swinging piece to clamp the conductive end or release the clamping of the conductive end.

Furthermore, the mounting frame comprises two mounting plates which are oppositely arranged, a first waist-shaped hole and a second waist-shaped hole are formed in the mounting plates, the length direction of the first waist-shaped hole and the length direction of the second waist-shaped hole form an angle with each other, and the first waist-shaped hole and the second waist-shaped hole in the two mounting plates are symmetrically arranged; the swing piece is located two between the mounting panel, the relative both ends of swing piece one side are sliding mounting respectively two downthehole in first waist type, the relative both ends of swing piece opposite side are sliding mounting respectively two downthehole in second waist type.

Further, the conductive member is inserted on the mounting frame and located between the two mounting plates.

Further, the mounting rack further comprises a first support plate and a second support plate; a first mounting hole is formed in the first side of the mounting plate, a second mounting hole is formed in the second side, adjacent to the first side, of the mounting plate, and the length direction of the first mounting hole is perpendicular to the length direction of the second mounting hole; the two opposite ends of the first supporting plate are respectively inserted into the two first mounting holes, and the two opposite ends of the second supporting plate are respectively inserted into the two second mounting holes; the conductive piece is inserted between the first supporting plate and the second supporting plate, one side of the conductive piece is abutted against the first supporting plate, and the other side of the conductive piece is abutted against the second supporting plate.

Further, the length direction of the first kidney-shaped hole is perpendicular to the length direction of the second kidney-shaped hole.

Furthermore, the clamping device also comprises a spring piece which is respectively connected with the clamping arm and the mounting rack; when the clamping arm is in a clamping state, the spring piece presses the clamping arm towards the conducting piece; the clamping arm comprises a supporting end, a transmission end and a clamping end; the supporting end is positioned between the transmission end and the clamping end and is hinged and installed on the conductive piece; the transmission end is in transmission connection with the swinging piece and driven by the swinging piece to rotate around the support end; the clamping end and the conductive piece form the clamping space and rotate around the supporting end under the drive of the transmission end so as to clamp the conductive end or release the clamping of the conductive end; the clamping arm is provided with a limiting groove between the clamping end and the supporting end, and when the clamping arm is in a clamping state, the limiting groove is in limiting fit with the mounting rack.

Furthermore, the transmission end is provided with an arc-shaped abutting surface, and the abutting surface abuts against the swinging piece.

Further, the driving mechanism comprises a linear driving part and two moving parts respectively connected with the linear driving part; the two motion parts are driven by the linear driving part to synchronously and linearly reciprocate, and the two motion parts are correspondingly connected with the two swinging pieces one by one.

According to the circuit breaker provided by the invention, the plugging system is additionally arranged in the circuit breaker, the external conductive structures such as copper bars and the like are plugged and matched with the plugging system, and the external conductive structures are directly plugged into the circuit breaker during assembly, so that the assembly steps are simplified, the assembly efficiency is improved, and the subsequent disassembly and maintenance are convenient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram (one) of a circuit breaker according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram (two) of a circuit breaker according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

fig. 4 is a schematic diagram of a plugging system of a circuit breaker provided in an embodiment of the present invention in a clamped state;

fig. 5 is a schematic diagram of a plugging system of a circuit breaker according to an embodiment of the present invention in a non-clamping state;

fig. 6 is a schematic structural diagram of a plugging system of a circuit breaker according to an embodiment of the present invention.

Icon:

1-a shell; 2-a contact system; 3-an arc extinguishing system; 4-an action mechanism; 5, plugging and unplugging the system; 6-a clamping assembly; 7-a mounting frame; 8-a conductive member; 9-a swinging member; 10-a gripper arm; 11-a mounting plate; 12-a connecting plate; 13-a first kidney-shaped hole; 14-a second kidney-shaped hole; 15-a first support plate; 16-a second support plate; 17-a first mounting hole; 18-a second mounting hole; 19-a support end; 20-a transmission end; 21-a clamping end; 22-a butting face; 23-a spring leaf; 24-a limit groove; 25-a linear drive section; 26-moving part.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Combine shown in fig. 1 and 2, this embodiment provides a circuit breaker, because the connection between outer conductive structure (not shown in the figure) such as current circuit breaker and copper bar is the screw connection, has caused the complicated and follow-up inconvenient problem of maintenance change of tearing open the machine of assembly, therefore this embodiment improves the inner structure of circuit breaker, has add plug system 5 in the circuit breaker.

Referring to fig. 3, the circuit breaker of the present embodiment includes a housing 1, and a contact system 2, an arc extinguishing system 3, an actuating mechanism 4 and a plugging system 5 installed in the housing 1; due to the arrangement of the plugging system 5, two corresponding sockets (not shown in the figure) need to be arranged on the housing 1, so that two conductive ends of the external conductive structure can be inserted into the plugging system 5 through the sockets.

The actuating mechanism 4 of the contact system 2 of the present embodiment is used for controlling the on/off of the circuit breaker, and the arc extinguishing system 3 of the present embodiment plays an arc extinguishing role, and all of the above three are structures known to those skilled in the art, so the working principle and structure of the contact system 2, the arc extinguishing system 3 and the actuating mechanism 4 are not described in the present embodiment.

The plugging system 5 of the embodiment is in conductive connection with the contact system 2; two conductive ends of external conductive structures such as copper bars are inserted into the plugging system 5, the two conductive ends can be called as a wire inlet end and a wire outlet end, the wire inlet end and the wire outlet end are correspondingly inserted into the plugging system 5 of the embodiment through openings formed in the shell 1, and the wire inlet end, the plugging system 5, the contact system 2 and the wire outlet end of the embodiment can form a conductive loop so as to meet the working requirements of the circuit breaker.

Above-mentioned structure adds plug system 5 in the circuit breaker, with external conductive structure such as copper bar with plug system 5 grafting cooperation, directly when the assembly with external conductive structure insert the circuit breaker on can, simplified the assembly step, promoted assembly efficiency, the subsequent maintenance of tearing open the machine of being convenient for moreover.

Based on the grafting cooperation applicant discovery of above-mentioned copper bar, single grafting cooperation, for example, design plug system 5 for simple slot structure can satisfy with being connected of external conductive structure such as copper bar, but long-term plug is used and is appeared slot wearing and tearing easily, cause external conductive structure pine to take off, influence the life of circuit breaker, if this kind of structure wants to realize external conductive structure and plug system 5's stable connection moreover, need both to closely cooperate, be unfavorable for external conductive structure's extraction like this, consequently, this embodiment has made further improvement to the concrete structural style of plug system 5.

Specifically, the plugging system 5 of the present embodiment includes a driving mechanism (not shown in the figure) and two clamping assemblies 6; it should be noted that the clamping assemblies 6 of the present embodiment are not a pair in the drawings, but a plurality of pairs, that is, the number of the clamping assemblies 6 may be more than four, and for convenience of description, the present embodiment is described with a pair of clamping assemblies 6. And in order to facilitate the action of driving the clamping assemblies 6 at the upper part and the lower part simultaneously, the clamping assemblies 6 at the upper part and the clamping assemblies 6 at the lower part are arranged in axial symmetry in the figure. The two conductive ends are correspondingly inserted into the two clamping components 6 one by one, namely, the wire inlet end is inserted into one clamping component 6, and the wire outlet end is also inserted into one clamping component 6; under the actuating mechanism drive of this embodiment, the centre gripping subassembly 6 of this embodiment can move under the non-centre gripping state in the attached 4 and the attached 5, under the centre gripping state, the centre gripping subassembly 6 of this embodiment presss from both sides tight conductive end to improve circuit breaker and external conductive structure's stability of being connected, prevent that external conductive structure from taking off, the centre gripping subassembly 6 of this embodiment removes the clamp to conductive end under the non-centre gripping state, so that external conductive structure's extraction, do benefit to subsequent maintenance of tearing open the machine.

During the assembly, drive the centre gripping subassembly 6 of this embodiment to non-centre gripping state through actuating mechanism, then insert the external conducting structure of this embodiment, drive centre gripping subassembly 6 to centre gripping state through actuating mechanism again, and then accomplish and external conducting structure be assembled between/be connected. When the maintenance is torn open to needs, again with the centre gripping subassembly 6 of this embodiment drive to non-centre gripping state through actuating mechanism, need not hard can extract external conducting structure.

Referring to fig. 6, the clamping assembly 6 of the present embodiment has various structural forms, such as being directly realized by a movable micro-mechanical clamping jaw, but because the number of the clamping assemblies 6 is large, the structure is complicated and the manufacturing cost is high, so the present embodiment proposes a new clamping assembly 6, which specifically includes a mounting frame 7, a conductive member 8, a swinging member 9 and a clamping arm 10; wherein, the mounting bracket 7 of the embodiment is used as a basic structure of the clamping assembly 6, which is connected and fixed on the inner wall of the housing 1, and the conductive member 8, the swinging member 9 and the clamping arm 10 of the embodiment are all mounted on the mounting bracket 7.

The conductive member 8 of this embodiment is electrically connected to the contact system 2, and forms a clamping space with the clamping arm 10 of this embodiment, and the conductive end is located in the clamping space; the driving mechanism of this embodiment drives the swinging member 9 to swing on the mounting frame 7, and the clamping arm 10 swings under the driving of the swinging member 9, so that the clamping assembly 6 can be switched between the clamping state and the non-clamping state to clamp or release the clamping of the conductive end, and the specific action process is given after the specific structural form of each component is given, so as to serve as a preferred embodiment of this embodiment.

In order to improve the installation stability and the swing stability of the swing member 9, the structure of the mounting frame 7 is improved in the present embodiment, and the mounting frame includes two mounting plates 11 that are oppositely arranged, the two mounting plates 11 are integrally connected through a connecting plate 12, each mounting plate 11 is provided with a first kidney-shaped hole 13 and a second kidney-shaped hole 14, and the first kidney-shaped hole 13 and the second kidney-shaped hole 14 on the two mounting plates 11 are symmetrically arranged. In order to enable the swinging of the swinging member 9, it is necessary that the longitudinal direction of the first waist-shaped hole 13 and the longitudinal direction of the second waist-shaped hole 14 are at an angle to each other and adjacent to each other, and the longitudinal line of the second waist-shaped hole 14 located at the upper side in the drawing passes through the first waist-shaped hole 13 of the present embodiment.

The swinging piece 9 of the embodiment is positioned between the two mounting plates 11, the two opposite ends of one side of the swinging piece 9 are respectively slidably mounted in the two first waist-shaped holes 13, the two opposite ends of the other side of the swinging piece 9 are respectively slidably mounted in the two second waist-shaped holes 14, one end of the swinging piece 9 in the first waist-shaped hole 13 or the second waist-shaped hole 14 is driven by the driving mechanism, the sliding of the end part of the swinging piece 9 in the two waist-shaped holes can be realized, the swinging of the swinging piece 9 is further realized, and the swinging of the clamping arm 10 is driven.

Preferably, the length direction of the first kidney-shaped hole 13 of the present embodiment is perpendicular to the length direction of the second kidney-shaped hole 14, and the length direction (i.e. the horizontal direction in the figure) of the first kidney-shaped hole 13 is parallel to the length direction of the conductive member 8 and the insertion direction of the external conductive structure, and the driving structure drives one end of the oscillating member 9 located in the first kidney-shaped hole 13, the one end performs horizontal reciprocating motion, and the upper end located in the second kidney-shaped hole 14 performs vertical reciprocating motion, which is beneficial to the installation and layout of the driving mechanism, as long as the driving mechanism with horizontal driving force is used, and there is no need for driving force in the oblique direction, which is convenient for the installation of the driving mechanism on the housing 1.

As a preferred embodiment of the present embodiment, from the viewpoint of easy assembly, the present embodiment inserts the conductive member 8 on the mounting frame 7, and the conductive member 8 is also located between the two mounting plates 11, so that the assembly and subsequent replacement of the conductive member 8 can be facilitated.

Accordingly, a further improvement needs to be made to the mounting bracket 7 of the present embodiment, specifically, the mounting bracket 7 of the present embodiment further includes a first supporting plate 15 and a second supporting plate 16; a first mounting hole 17 is formed in a first side (lower side in the figure) of the mounting plates 11, a second mounting hole 18 is formed in a second side (left side in the figure) adjacent to the first side, two first mounting holes 17 in the two mounting plates 11 are symmetrically arranged, and two second mounting holes 18 in the two mounting plates 11 are symmetrically arranged; the length direction of the first mounting hole 17 is vertical to the length direction of the second mounting hole 18; opposite ends of the first supporting plate 15 are respectively inserted into the two first mounting holes 17, and opposite ends of the second supporting plate 16 are respectively inserted into the two second mounting holes 18; the conductive piece 8 is inserted between the first supporting plate 15 and the second supporting plate 16, the lower surface of the conductive piece 8 is in contact with the first supporting plate 15 so as to support and fix the conductive piece 8 through the first supporting plate 15, the upper surface of the conductive piece 8 is abutted against the second supporting plate 16, and the conductive piece 8 is limited through the second supporting plate 16.

Based on the above-mentioned swinging member 9, the clamp arm 10 of the present embodiment includes a support end 19, a transmission end 20, and a clamp end 21; a support end 19 is positioned between a driving end 20 on the right side and a clamping end 21 on the left side, the support end 19 is directly mounted on the conductive member 8 to support the clamping arm 10 through the conductive member 8; the transmission end 20 is in transmission connection with the swinging piece 9 and rotates around the support end 19 under the drive of the swinging piece 9; the clamping end 21 forms a clamping space with the conductive member 8 and rotates around the supporting end 19 under the driving of the swinging member 9 to clamp or release the clamping of the conductive end. In addition, in order to fix the clamp arm 10 and to increase the clamping force of the clamp arm 10, the spring plate 23 is connected to the mounting bracket 7 of this embodiment, the spring plate 23 is connected to the upper side of the clamp arm 10, and when the clamp arm 10 is in the clamping state, the clamp arm 10 can be pressed to increase the clamping force between the clamp arm 10 and the conductive member 8. In addition, in the embodiment, the retaining groove 24 is formed on the clamping arm 10, and when the clamping arm 10 is in the clamping state, the retaining groove 24 is in retaining fit with the second supporting plate 16, so as to prevent the clamping arm 10 from rotating excessively to damage the external conductive structure.

Preferably, in order to facilitate the cooperation with the swinging member 9, the transmission end 20 of the present embodiment is provided with an arc-shaped abutting surface 22, and the abutting surface 22 abuts against the upper end of the swinging member 9, and more preferably, the upper end of the swinging member 9 may be designed to be an arc surface structure.

In addition, in order to simplify the structure, the driving mechanism of the present embodiment includes a linear driving portion 25 and two moving portions 26 respectively connected to the linear driving portion 25; the two moving portions 26 are driven by the linear driving portion 25 to synchronously and linearly reciprocate, the two moving portions 26 are correspondingly connected with the plurality of pairs of swinging members 9 one by one, and the linear driving portion 25 of the driving mechanism of the embodiment can be any one of the existing linear reciprocating structures (such as an air cylinder).

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit breaker comprising a housing (1) and a contact system (2) mounted within the housing (1); the device is characterized by further comprising a plugging system (5) arranged in the shell (1), wherein the plugging system (5) is connected with the contact system (2);

two conductive ends of the external conductive structure are inserted into the plugging system (5), and one of the conductive ends, the plugging system (5), the contact system (2) and the other conductive end form a conductive loop.

2. The circuit breaker according to claim 1, characterized in that said plugging system (5) comprises a drive mechanism and two clamping assemblies (6);

the two conductive ends are inserted into the two clamping assemblies (6) in a one-to-one corresponding manner;

the clamping assembly (6) is driven by the driving mechanism to clamp the conductive end or release the clamping of the conductive end.

3. The circuit breaker according to claim 2, characterized in that said clamping assembly (6) comprises a mounting frame (7), a conductive member (8), a swinging member (9) and a clamping arm (10);

the mounting rack (7) is fixedly connected to the inner wall of the shell (1), and the conductive piece (8), the swinging piece (9) and the clamping arm (10) are all mounted on the mounting rack (7);

the conductive piece (8) is connected with the contact system (2), a clamping space is formed between the conductive piece and the clamping arm (10), and the conductive end is positioned in the clamping space;

the driving mechanism drives the swinging piece (9) to swing on the installation rack (7), and the clamping arm (10) is driven by the swinging piece (9) to clamp the conductive end or release the clamping of the conductive end.

4. The circuit breaker according to claim 3, wherein the mounting bracket (7) comprises two opposite mounting plates (11), the mounting plates (11) are provided with a first kidney-shaped hole (13) and a second kidney-shaped hole (14), the length direction of the first kidney-shaped hole (13) and the length direction of the second kidney-shaped hole (14) form an angle with each other, and the first kidney-shaped hole (13) and the second kidney-shaped hole (14) on the two mounting plates (11) are symmetrically arranged;

swing piece (9) are located two between mounting panel (11), the relative both ends of swing piece (9) one side are sliding mounting respectively two in first waist type hole (13), the relative both ends of swing piece (9) opposite side are sliding mounting respectively two in second waist type hole (14).

5. The circuit breaker according to claim 4, characterized in that said conductive member (8) is interposed on said mounting frame (7) and is located between two of said mounting plates (11).

6. The circuit breaker according to claim 5, characterized in that said mounting frame (7) further comprises a first support plate (15) and a second support plate (16);

a first mounting hole (17) is formed in the first side of the mounting plate (11), a second mounting hole (18) is formed in the second side adjacent to the first side, and the length direction of the first mounting hole (17) is perpendicular to the length direction of the second mounting hole (18);

the two opposite ends of the first supporting plate (15) are respectively inserted into the two first mounting holes (17), and the two opposite ends of the second supporting plate (16) are respectively inserted into the two second mounting holes (18);

the conductive piece (8) is inserted between the first supporting plate (15) and the second supporting plate (16), one side of the conductive piece (8) is abutted against the first supporting plate (15), and the other side of the conductive piece is abutted against the second supporting plate (16).

7. The circuit breaker according to claim 4, wherein the length direction of the first kidney-shaped hole (13) is perpendicular to the length direction of the second kidney-shaped hole (14).

8. The circuit breaker according to claim 3, further comprising a spring plate (23), wherein the spring plate (23) is connected to the clamp arm (10) and the mounting bracket (7), respectively; when the clamping arm (10) is in a clamping state, the spring piece (23) presses the clamping arm (10) towards the conductive piece (8);

the clamping arm (10) comprises a supporting plate (19), a transmission end (20) and a clamping end (21); the supporting plate (19) is positioned between the transmission end (20) and the clamping end (21) and is arranged on the conductive piece (8); the transmission end (20) is in transmission connection with the swinging piece (9) and rotates around the supporting plate (19) under the driving of the swinging piece (9); the clamping end (21) and the conductive piece (8) form the clamping space, and are driven by the transmission end (20) to rotate around the supporting plate (19) so as to clamp the conductive end or release the clamping of the conductive end;

the clamping arm (10) is arranged between the clamping end (21) and the supporting plate (19) and is provided with a limiting groove (24), and when the clamping arm (10) is in a clamping state, the limiting groove (24) is in limiting fit with the mounting rack (7).

9. The circuit breaker according to claim 8, characterized in that said transmission end (20) is provided with an arc-shaped abutment surface (22), said abutment surface (22) being in abutment with said oscillating member (9).

10. A circuit breaker according to claim 3, wherein said drive mechanism comprises a linear drive portion (25) and two moving portions (26) respectively connected to said linear drive portion (25);

the two motion parts (26) are driven by the linear driving part (25) to synchronously and linearly reciprocate, and the two motion parts (26) are correspondingly connected with the two swinging pieces (9) one by one.