Circuit breaker contact mounting structure

Abstract

This utility model relates to the field of circuit breaker technology and discloses a circuit breaker contact mounting structure, including a contact support, a contact assembly, and a positioning shaft. The contact support has a mounting groove for inserting the contact assembly, and mounting holes are formed on both side walls of the mounting groove. The contact assembly includes a moving contact piece, a bracket, and a locking element. Two brackets are distributed on both sides of the moving contact piece. The moving contact piece has a central hole, and the brackets have limit holes. The locking element is used to bind or unbind the moving contact piece and the two brackets. The positioning shaft is used to pass through the mounting holes, the central hole, and the limit holes after the bound contact assembly is inserted into the mounting groove, to combine the contact support and the contact assembly. This circuit breaker contact mounting structure features a modular design for the contact assembly, and the contact assembly has a structural binding function, facilitating insertion into the contact support and assembly into a single unit. This significantly reduces the installation difficulty of the moving contact piece, ensuring the original functionality while making disassembly and maintenance easier.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker contact mounting structure. Background Technology

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions and closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. The main components of a circuit breaker include the contact system, the arc-extinguishing system, and the tripping mechanism. Among these, the moving contact, which is the reactive actuating element, must be reliably installed; otherwise, circuit breaker malfunctions can easily occur, affecting its tripping and protective functions.

[0003] The existing circuit breaker moving contacts are mounted on the contact support via pins, springs, and other components during installation. The installation process requires high precision and is inconvenient to operate. In addition, disassembly and assembly are cumbersome during fault maintenance. Therefore, it is necessary to optimize the contact structure. Utility Model Content

[0004] Based on the above, the purpose of this utility model is to provide a circuit breaker contact mounting structure that is easy to install.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A circuit breaker contact mounting structure includes a contact support, a contact assembly, and a positioning shaft, wherein:

[0007] The contact support is provided with a mounting groove for inserting the contact assembly, and mounting holes are provided on both sides of the mounting groove.

[0008] The contact assembly includes a moving contact piece, a bracket, and a locking element. Two brackets are distributed on both sides of the moving contact piece. The moving contact piece has a central hole, and the brackets have limit holes. The locking element is used to bind or unbind the moving contact piece and the two brackets.

[0009] The positioning shaft is used to pass through the mounting hole, center hole, and limit hole after the bound contact assembly is installed in the mounting slot, so as to combine the contact support and the contact assembly.

[0010] As an optional solution, the locking component includes a fixed shaft, a sliding shaft, and a tension spring. The fixed shaft and the sliding shaft pass through the two brackets respectively, and the brackets are provided with a sliding groove. The sliding shaft can move closer to or away from the fixed shaft along the sliding groove. The fixed shaft and the sliding shaft are connected by a tension spring. A stop groove is provided on the edge of the moving contact piece.

[0011] When the sliding shaft is in the stop groove, the moving contact piece is bound to the bracket;

[0012] When the sliding shaft moves out of the stop groove, the moving contact piece can rotate freely relative to the bracket.

[0013] As an alternative, when the moving contact piece is bound to the bracket, the extension direction of the moving contact piece is close to or consistent with the length direction of the bracket, making it easy to install the bound contact assembly into the mounting slot.

[0014] As an alternative, a roller is fitted onto the sliding shaft, and the roller makes rolling contact with the edge of the moving contact piece.

[0015] As an alternative, a pressure surface is provided on the edge of the moving contact piece and on one side of the stop groove. The pressure surface is used as the pressure application part after the sliding shaft moves out of the stop groove to realize the closing action of the moving contact piece.

[0016] As an alternative, the moving contact piece is a centrally symmetrical structure with contacts at both ends, and two sets of locking elements are provided, which are symmetrically distributed with the positioning axis as the center of symmetry.

[0017] As an optional solution, the contact support is provided with a limiting part to limit the position of the contact assembly. When the contact assembly abuts against the limiting part, the contact assembly is installed in the mounting groove.

[0018] As an alternative, the limiting part includes a limiting protrusion and / or a limiting groove for stopping the locking member.

[0019] The beneficial effects of this utility model are:

[0020] The circuit breaker contact mounting structure features a modular design for the contact assembly, and the contact assembly has a structural binding function, making it easy to install into the contact support and combine them into one unit. This greatly reduces the installation difficulty of the moving contact piece, ensuring the original function while making it easier to disassemble and maintain. Attached Figure Description

[0021] Figure 1 This is an exploded view of the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0022] Figure 2 This is an exploded view of the contact assembly in the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0023] Figure 3 This is a schematic diagram of the moving contact piece in the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the bracket in the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0025] Figure 5 This is a first-view view of the contact support in the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0026] Figure 6 This is a second-view view of the contact support in the circuit breaker contact mounting structure provided in this embodiment of the utility model;

[0027] Figure 7 This is a schematic diagram of the circuit breaker contact mounting structure provided in this embodiment of the present invention when the contact assembly is installed in the contact support;

[0028] Figure 8 This is a schematic diagram of the circuit breaker contact mounting structure provided in this embodiment of the present invention after the contact assembly has been installed and untied.

[0029] In the attached image:

[0030] 1. Contact support; 11. Mounting slot; 12. Mounting hole; 13. Limiting protrusion; 14. Limiting groove;

[0031] 2. Contact assembly; 21. Moving contact piece; 211. Center hole; 212. Stop groove; 213. Pressure surface; 22. Bracket; 221. Limiting hole; 222. Slide groove; 23. Fixed shaft; 24. Sliding shaft; 25. Tension spring; 26. Roller;

[0032] 3. Positioning axis. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0038] Please see Figures 1 to 8 As shown, this embodiment provides a circuit breaker contact mounting structure, including a contact support 1, a contact assembly 2, and a positioning shaft 3. The contact support 1 is provided with a mounting groove 11 for inserting the contact assembly 2, and mounting holes 12 are provided on both sides of the mounting groove 11. The contact assembly 2 includes a moving contact piece 21, a bracket 22, and a locking member. Two brackets 22 are distributed on both sides of the moving contact piece 21. The moving contact piece 21 is provided with a central hole 211, and the brackets 22 are provided with limit holes 221. The locking member is used to bind or unbind the moving contact piece 21 and the two brackets 22. The positioning shaft 3 is used to pass through the mounting holes 12, the central hole 211, and the limit holes 221 after the bound contact assembly 2 is inserted into the mounting groove 11, so as to combine the contact support 1 and the contact assembly 2.

[0039] Therefore, the contact assembly 2 is modularly designed and has a structural binding function, which makes it easy to install into the contact support 1 and combine them into one unit. This greatly reduces the installation difficulty of the moving contact piece 21, and while ensuring the original function, it is easier to disassemble and maintain.

[0040] In at least one embodiment, the locking element includes a fixed shaft 23, a sliding shaft 24, and a tension spring 25. The fixed shaft 23 and the sliding shaft 24 respectively pass through two supports 22, and the supports 22 are provided with a sliding groove 222. The sliding shaft 24 can move closer to or away from the fixed shaft 23 along the sliding groove 222. The fixed shaft 23 and the sliding shaft 24 are connected by the tension spring 25. The edge of the moving contact piece 21 is provided with a stop groove 212. When the sliding shaft 24 is in the stop groove 212, the moving contact piece 21 is bound to the support 22. When the sliding shaft 24 moves out of the stop groove 212, the moving contact piece 21 can rotate freely relative to the support 22.

[0041] Thus, the sliding shaft 24 is in the stop groove 212 and under the tension of the tension spring 25, the moving contact piece 21 and the bracket 22 maintain structural stability, making it convenient to install the moving contact piece 21 and the bracket 22, which are combined into one piece, into the mounting groove 11. After installation, when the moving contact piece 21 is rotated against the tension of the tension spring 25, so that the sliding shaft 24 moves out of the stop groove 212, the moving contact piece 21 can rotate freely.

[0042] Considering that the contact assembly 2 should be minimized or concentrated in the bound state, when the moving contact piece 21 is bound to the bracket 22, the extension direction of the moving contact piece 21 is close to or consistent with the length direction of the bracket 22, that is... Figure 1 The state of the middle contact assembly 2 makes it easy to insert the bonded contact assembly 2 into the mounting slot 11.

[0043] In some embodiments, a roller 26 is sleeved on the sliding shaft 24, and the roller 26 makes rolling contact with the edge of the moving contact piece 21. The design of the roller 26 makes the movement of the sliding shaft 24 smoother, and facilitates the contact assembly 2 to switch to the binding state or the unbinding state.

[0044] In some embodiments, see details. Figure 3 A pressure surface 213 is provided on the edge of the moving contact piece 21 and on one side of the stop groove 212. The pressure surface 213 is used as the pressure part after the sliding shaft 24 moves out of the stop groove 212 to realize the closing action of the moving contact piece 21. In addition, under the action of the tension spring 25, the sliding shaft 24 is not easy to return to the stop groove 212, so as to avoid the moving contact piece 21 being bound during the normal use of the circuit breaker.

[0045] In this embodiment, the moving contact piece 21 is a centrally symmetrical structure with contacts at both ends. Therefore, there are two sets of locking members, which are symmetrically distributed with the positioning axis 3 as the center of symmetry to ensure that the moving contact piece 21 is subjected to balanced forces.

[0046] In order to ensure that the contact assembly 2 is accurately installed into the mounting slot 11, the contact support 1 is provided with a limiting part to limit the contact assembly 2. When the contact assembly 2 abuts against the limiting part, the contact assembly 2 is installed in the mounting slot 11.

[0047] In some embodiments, the limiting portion includes a limiting protrusion 13 and / or a limiting groove 14 for stopping the locking member. In this embodiment, a limiting protrusion 13 is provided to limit the fixing shaft 23 of a set of locking members. Figure 5 (as shown) and the limiting groove 14 that limits the fixing shaft 23 of another set of locking members. Figure 6 As shown, when the fixed shaft 23 abuts against the corresponding limiting protrusion 13 or limiting groove 14 at the same time, it can ensure that the contact assembly 2 is installed in place.

[0048] After the contact assembly 2 is installed in place, the moving contact piece 21 can be rotated by hand to move the fixed shaft 23 out of the stop groove 212 and abut against the pressure surface 213. At this time, under the action of the tension spring 25, the moving contact piece 21 can maintain its working state. Figure 8 As shown; finally, insert the positioning shaft 3 into the contact support 1 and the contact assembly 2 to complete the assembly of the entire structure.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A circuit breaker contact mounting structure, characterized in that, It includes a contact support (1), a contact assembly (2), and a positioning shaft (3), wherein: The contact support (1) is provided with a mounting groove (11) for inserting the contact assembly (2), and mounting holes (12) are provided on both sides of the mounting groove (11); The contact assembly (2) includes a moving contact piece (21), a bracket (22), and a locking member. The two brackets (22) are distributed on both sides of the moving contact piece (21). The moving contact piece (21) has a central hole (211), and the brackets (22) have limit holes (221). The locking member is used to bind or unbind the moving contact piece (21) and the two brackets (22). The positioning shaft (3) is used to pass through the mounting hole (12), the center hole (211) and the limiting hole (221) after the bound contact assembly (2) is installed in the mounting groove (11) to combine the contact support (1) and the contact assembly (2).

2. The circuit breaker contact mounting structure according to claim 1, characterized in that, The locking component includes a fixed shaft (23), a sliding shaft (24), and a tension spring (25). The fixed shaft (23) and the sliding shaft (24) pass through the two brackets (22) respectively, and the brackets (22) are provided with a sliding groove (222). The sliding shaft (24) can move closer to or away from the fixed shaft (23) along the sliding groove (222). The fixed shaft (23) and the sliding shaft (24) are connected by a tension spring (25). The moving contact piece (21) is provided with a stop groove (212) on its edge. When the sliding shaft (24) is in the stop groove (212), the moving contact piece (21) is bound to the bracket (22); When the sliding shaft (24) moves out of the stop groove (212), the moving contact piece (21) can rotate freely relative to the bracket (22).

3. The circuit breaker contact mounting structure according to claim 2, characterized in that, When the moving contact piece (21) is bound to the bracket (22), the extending direction of the moving contact piece (21) is close to or consistent with the length direction of the bracket (22), making it easy for the bound contact assembly (2) to be installed into the mounting groove (11).

4. The circuit breaker contact mounting structure according to claim 2, characterized in that, A roller (26) is sleeved on the sliding shaft (24), and the roller (26) makes rolling contact with the edge of the moving contact piece (21).

5. The circuit breaker contact mounting structure according to claim 2, characterized in that, A pressure surface (213) is provided on the edge of the moving contact piece (21) and on one side of the stop groove (212). The pressure surface (213) is used as the pressure part after the sliding shaft (24) moves out of the stop groove (212) to realize the closing action of the moving contact piece (21).

6. The circuit breaker contact mounting structure according to claim 1, characterized in that, The moving contact piece (21) is a centrally symmetrical structure with contacts at both ends. The locking member is provided in two sets, and the two sets of locking members are symmetrically distributed with the positioning axis (3) as the center of symmetry.

7. The circuit breaker contact mounting structure according to claim 1, characterized in that, The contact support (1) is provided with a limiting part for limiting the contact assembly (2). When the contact assembly (2) abuts against the limiting part, the contact assembly (2) is installed in the mounting groove (11).

8. The circuit breaker contact mounting structure according to claim 7, characterized in that, The limiting part includes a limiting protrusion (13) and / or a limiting groove (14) for stopping the locking member.

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