A circuit breaker moving terminal unit, a circuit breaker moving terminal contact group and a circuit breaker

Abstract

The utility model discloses a circuit breaker dynamic wiring terminal unit, circuit breaker dynamic terminal contact group and circuit breaker, including dynamic terminal casing and dynamic conducting sheet, is equipped with side slot on dynamic terminal casing, dynamic conducting sheet is adapted to insert in the side slot, and the position of the free end tail of dynamic conducting sheet is corresponded to the side slot is provided with the side retaining wall for limiting the free end tail of dynamic conducting sheet and the lateral escape side slot, and the side retaining wall is equipped with the side gap of the free end tail of dynamic conducting sheet from lateral assembly to the side slot and is limited by the side retaining wall, and the utility model discloses when installing dynamic conducting sheet, its free end tail can directly through the side gap and be limited by the side retaining wall and be assembled to the side slot, and then make dynamic conducting sheet's free end tail can with the rest part together through the lateral assembly mode of assembly to the side slot of dynamic terminal casing in one step.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a circuit breaker moving terminal unit, a circuit breaker moving terminal contact group, and a circuit breaker. Background Technology

[0002] A current circuit breaker moving terminal includes a moving terminal housing and a moving conductive piece. The moving terminal housing has a side slot, and the moving conductive piece is fitted into the side slot. In order to better and more stably install the moving conductive piece in the side slot, a recessed limiting part is generally opened on the inner wall of the end of the side slot, and the end of the moving conductive piece is fitted into the recessed limiting part. This setting means that during installation, the moving conductive piece needs to be installed at an angle, first by inserting the end of the moving conductive piece into the recessed limiting part on the inner wall of the end of the side slot, and then pressing the rest of the piece into the side slot. This installation method is difficult to automate and affects production efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a circuit breaker moving terminal unit, which mainly solves the technical problem that it is difficult to automatically assemble the moving conductive sheet of existing circuit breakers into the side slot of the moving terminal housing.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0005] A circuit breaker moving terminal unit includes a moving terminal housing and a moving conductive sheet. The moving terminal housing has a side slot, and the moving conductive sheet is adapted to be inserted into the side slot. At the position of the side slot corresponding to the free end of the moving conductive sheet, a side baffle is provided to restrict the free end of the moving conductive sheet from laterally dislodging from the side slot. The side baffle has a side notch to facilitate the free end of the moving conductive sheet to be laterally assembled into the side slot and limited by the side baffle.

[0006] Furthermore, the opening position of the side notch on the side baffle is configured to correspond to the state position of the free end of the moving conductive sheet after elastic swing.

[0007] Furthermore, a side notch is opened on the side wall near the bottom wall of the side slot, so that the free end of the moving conductive piece needs to swing down to its limit position before it can correspond to the side notch, thereby allowing the moving conductive piece to be inserted into the side slot of the moving terminal housing from the side.

[0008] Furthermore, the moving conductive sheet includes a spring clip connecting part for connecting with the spring clip and an elastic abutting engagement part for cooperating with the stationary conductive sheet of the circuit breaker. The spring clip connecting part and the elastic abutting engagement part are connected by an intermediate transition part. The elastic abutting engagement part includes an elastic swing arm and a U-shaped abutting part provided at the end of the elastic swing arm. The free end of the U-shaped abutting part is provided with a limiting end part extending along the length direction of the elastic swing arm. The side baffle blocks the lateral movement of the limiting end part, thereby generating a lateral anti-disengagement effect on the elastic abutting engagement part.

[0009] Furthermore, a support column for supporting the elastic swing arm is provided on the bottom wall of the side slot.

[0010] Furthermore, two side slots are provided on the terminal housing, and a movable conductive piece is inserted into each of the two side slots. An insulating gap groove is opened on the terminal housing between the two movable conductive pieces. An insulating terminal cover is installed on the terminal housing, and an insulating protrusion is provided on the insulating terminal cover to match the insulating gap groove. The interlocking between the insulating protrusion and the insulating gap groove increases the electrical clearance and creepage distance between the two movable conductive pieces.

[0011] Furthermore, a positioning hole is provided on the terminal housing, and a positioning post that matches the positioning hole is provided on the insulating terminal cover. The positioning hole and the positioning post cooperate with each other to provide positioning and guidance for the installation of the insulating terminal cover on the terminal housing.

[0012] Based on the same inventive concept, this utility model also provides a circuit breaker moving terminal contact group, including a moving terminal bracket and any of the circuit breaker moving terminal units described above, with each circuit breaker moving terminal unit fixedly installed side by side on the moving terminal bracket.

[0013] Based on the same inventive concept, this utility model also provides a circuit breaker, including any of the moving terminal units or moving terminal contact groups of the circuit breaker described above.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] In the circuit breaker moving terminal unit, circuit breaker moving terminal contact group, and circuit breaker described in this utility model, a side baffle is provided at the end of the side slot, and a side notch is opened on the side baffle. In this way, when installing the moving conductive piece, its free end can be directly inserted into the side slot through the side notch and limited by the side baffle. This allows the free end of the moving conductive piece to be assembled into the side slot of the moving terminal housing in one step along with the rest of the part by side insertion, without the need for oblique step assembly. This facilitates the automated assembly of the moving conductive piece in the side slot and improves its production efficiency. Attached Figure Description

[0016] Figure 1 This is an exploded three-dimensional structural diagram of the moving terminal unit of the circuit breaker according to an embodiment of the present invention.

[0017] Figure 2 This is a partial structural schematic diagram of the circuit breaker moving terminal unit according to an embodiment of the present utility model.

[0018] Figure 3 This is a partial structural cross-sectional view of the circuit breaker moving terminal unit according to an embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the installation process of the circuit breaker moving terminal unit according to an embodiment of the present utility model.

[0020] Figure 5 This is a three-dimensional structural diagram of the insulating terminal cover according to an embodiment of the present utility model.

[0021] Figure 6 This is an exploded three-dimensional structural diagram of the moving terminal contact group of the circuit breaker according to an embodiment of the present invention.

[0022] Label Explanation:

[0023] 1. Terminal housing, 2. Moving conductive sheet, 3. Spring snap, 4. Insulating terminal cover, 5. Moving terminal bracket, 11. Side slot, 12. Side baffle, 13. Side notch, 14. Support column, 15. Insulating spacer groove, 16. Positioning hole, 21. Spring snap connection part, 22. Intermediate transition part, 23. Elastic abutment mating part, 41. Insulating protrusion, 42. Positioning column, 231. Elastic swing arm, 232. Shaped abutment part, 233. Limiting end part. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0026] Please refer to the appendix. Figure 1 To be continued Figure 6An embodiment of this utility model provides a circuit breaker moving terminal unit, including a moving terminal housing 1 and a moving conductive sheet 2. The moving terminal housing 1 has a side slot 11, and the moving conductive sheet 2 is adapted to be inserted into the side slot 11. At the position of the free end of the moving conductive sheet 2 corresponding to the side slot 11, a side baffle 12 is provided to restrict the free end of the moving conductive sheet 2 from laterally dislodging out of the side slot 11. The side baffle 12 has a side notch 13 to facilitate the free end of the moving conductive sheet 2 to be laterally assembled into the side slot 11 and limited by the side baffle 12. It is understood that in this embodiment, by providing a side baffle 12 at the end of the side slot 11 and opening a side notch 13 on the side baffle 12, when installing the moving conductive sheet 2, its free end can be directly inserted into the side slot 11 through the side notch 13 and limited by the side baffle 12. This allows the free end of the moving conductive sheet 2 to be assembled into the side slot 11 of the moving terminal housing 1 in one step along with the rest of the part through a side-insertion assembly method, without the need for a step-by-step oblique assembly method. This facilitates the automated assembly of the moving conductive sheet 2 in the side slot 11 and improves its production efficiency.

[0027] Please refer to the appendix. Figure 1 To be continued Figure 4 In one preferred embodiment, the side notch 13 is positioned on the side baffle 12 to correspond to the position of the free end of the movable conductive sheet 2 after it has elastically swung down. Further, the side notch 13 is located on the side baffle 12 near the bottom wall of the side slot 11, so that the free end of the movable conductive sheet 2 must elastically swing down to its limit position before corresponding to the side notch, thereby allowing the movable conductive sheet 2 to be inserted into the side slot 11 of the movable terminal housing 1 from the side. In this embodiment, the side notch 13 is formed on the side wall 12 near the bottom wall of the side slot 11. Therefore, when assembling the movable conductive sheet 2, the free end of the movable conductive sheet 2 needs to be pressed down and aligned with the side notch 13 before side insertion. When the side insertion is in place and the pressing force is released, the free end of the movable conductive sheet 2 will automatically spring back and move away from the side notch 13. In this way, the side wall 12 can provide a lateral limiting effect on the free end of the movable conductive sheet 2 to prevent it from coming out of the side slot 11. On the other hand, the free end of the movable conductive sheet 2 needs to swing down elastically to the limit position before it can correspond with the side notch 13. In this way, the elastic up and down swing of the free end of the movable conductive sheet 2 during the working process can be limited by the side wall 12. Only when a specific external force causes the free end of the movable conductive sheet 2 to exceed the working swing stroke range and swing to the action limit position can it correspond with the side notch 13 and then be laterally withdrawn. This greatly improves the action stability of the movable conductive sheet 2.

[0028] Please refer to the appendix. Figure 1 To be continued Figure 4In one preferred embodiment, the moving conductive sheet 2 includes a spring snap connection part 21 for connecting with the spring snap 3 and an elastic abutment engagement part 23 for cooperating with the stationary conductive sheet of the circuit breaker. The spring snap connection part 21 and the elastic abutment engagement part 23 are connected by an intermediate transition part 22. The elastic abutment engagement part 23 includes an elastic swing arm 231 and a U-shaped abutment part 232 provided at the end of the elastic swing arm 231. The free end of the U-shaped abutment part 232 is provided with a limiting end part 233 extending along the length direction of the elastic swing arm 231. The side wall 12 blocks the lateral movement of the limiting end part 233, thereby generating a lateral anti-disengagement effect on the elastic abutment engagement part 23.

[0029] Please refer to the appendix. Figure 1 To be continued Figure 4 In one preferred embodiment, a support column 14 for supporting the elastic swing arm 231 is provided on the bottom wall of the side slot 11. In this embodiment, preferably, two support columns 14 are provided on the bottom wall of the side slot 11. However, those skilled in the art should understand that in other embodiments, other numbers and other arrangements of support columns 14 may be provided on the bottom wall of the side slot 11, and it is not limited to the specific implementation disclosed in this embodiment.

[0030] Please refer to the appendix. Figure 1 Appendix Figure 5 In one preferred embodiment, two side slots 11 are provided on the terminal housing 1, and a movable conductive piece 2 is inserted into each side slot 11. An insulating gap groove 15 is formed on the terminal housing 1 between the two movable conductive pieces 2. An insulating terminal cover 4 is installed on the terminal housing 1, and an insulating protrusion 41 adapted to the insulating gap groove 15 is provided on the insulating terminal cover 4. The concave-convex fit between the insulating protrusion 41 and the insulating gap groove 15 increases the electrical clearance and creepage distance between the two movable conductive pieces 2. In addition, in other embodiments, insulating gap groove structures can be formed on the outer side of the terminal housing 1 corresponding to the two movable conductive pieces 2, and corresponding insulating protrusion structures can be provided on the insulating terminal cover 4. The concave-convex fit structure formed by the insulating gap groove structure and the corresponding insulating protrusion improves the insulation protection effect.

[0031] Please refer to the appendix. Figure 1 Appendix Figure 5 In one preferred embodiment, a positioning hole 16 is provided on the terminal housing 1, and a positioning post 42 adapted to the positioning hole 16 is provided on the insulating terminal cover 4. The positioning hole 16 and the positioning post 42 cooperate with each other to provide positioning and guiding function for the installation of the insulating terminal cover 4 on the terminal housing 1.

[0032] Please refer to the appendix. Figure 1 To be continued Figure 6An embodiment of this utility model also discloses a circuit breaker moving terminal contact group, including a moving terminal bracket 5 and any of the above-described circuit breaker moving terminal units, with each circuit breaker moving terminal unit fixedly installed side by side on the moving terminal bracket 5.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 6 An embodiment of this utility model also discloses a circuit breaker, including any of the moving terminal units or moving terminal contact groups of the circuit breaker described above, wherein the circuit breaker is a drawer-type circuit breaker.

[0034] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model. Therefore, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

Claims

1. A circuit breaker moving terminal unit, comprising a moving terminal housing (1) and a moving conductive plate (2), wherein a side slot (11) is provided on the moving terminal housing (1), and the moving conductive plate (2) is adapted to be inserted into the side slot (11), characterized in that: A side wall (12) is provided at the position of the free end of the movable conductive piece (2) in the side slot (11) to restrict the free end of the movable conductive piece (2) from laterally exiting the side slot (11). A side notch (13) is provided on the side wall (12) to facilitate the lateral assembly of the free end of the movable conductive piece (2) into the side slot (11) and to be limited by the side wall (12).

2. The circuit breaker moving terminal unit according to claim 1, characterized in that: The opening position of the side notch (13) on the side baffle (12) is configured to correspond to the state position of the free end of the moving conductive sheet (2) after elastic swing.

3. The circuit breaker moving terminal unit according to claim 2, characterized in that: The side notch (13) is opened on the side wall (12) near the bottom wall of the side slot (11) so that the free end of the movable conductive piece (2) needs to be elastically swung down to the limit position before it can correspond to the side notch (13), so that the movable conductive piece (2) can be inserted into the side slot (11) of the movable terminal housing (1) from the side.

4. The circuit breaker moving terminal unit according to claim 1, characterized in that: The moving conductive sheet (2) includes a spring snap connection part (21) for connecting with the spring snap (3) and an elastic abutment part (23) for cooperating with the stationary conductive sheet of the circuit breaker. The spring snap connection part (21) and the elastic abutment part (23) are connected by an intermediate transition part (22). The elastic abutment part (23) includes an elastic swing arm (231) and a U-shaped abutment part (232) provided at the end of the elastic swing arm (231). The free end of the U-shaped abutment part (232) is provided with a limiting end part (233) extending along the length direction of the elastic swing arm (231). The side wall (12) blocks the lateral movement of the limiting end part (233), thereby generating a lateral anti-disengagement effect on the elastic abutment part (23).

5. The circuit breaker moving terminal unit according to claim 4, characterized in that: A support column (14) for supporting the elastic swing arm (231) is provided on the bottom wall of the side slot (11).

6. The circuit breaker moving terminal unit according to any one of claims 1 to 5, characterized in that: Two side slots (11) are provided on the terminal housing (1), and a movable conductive piece (2) is inserted into each of the two side slots (11). An insulating gap groove (15) is provided on the terminal housing (1) between the two movable conductive pieces (2). An insulating terminal cover (4) is installed on the terminal housing (1). An insulating protrusion (41) is provided on the insulating terminal cover (4) to match the insulating gap groove (15). The interlocking between the insulating protrusion (41) and the insulating gap groove (15) increases the electrical clearance and creepage distance between the two movable conductive pieces (2).

7. The circuit breaker moving terminal unit according to claim 6, characterized in that: A positioning hole (16) is provided on the terminal housing (1), and a positioning post (42) adapted to the positioning hole (16) is provided on the insulating terminal cover (4). The positioning hole (16) and the positioning post (42) cooperate with each other to play a positioning and guiding role in the installation of the insulating terminal cover (4) on the terminal housing (1).

8. A circuit breaker moving terminal contact group, characterized in that: It includes a moving terminal bracket (5) and several circuit breaker moving terminal units as described in any one of claims 1 to 7, wherein each circuit breaker moving terminal unit is fixedly mounted side by side on the moving terminal bracket (5).

9. A circuit breaker, characterized in that: It includes the moving terminal unit as described in any one of claims 1 to 7 or the moving terminal contact group of the circuit breaker as described in claim 8.

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