Static terminal contact group, circuit breaker contact mechanism and drawer type circuit breaker

Abstract

The utility model discloses a static terminal contact group, a breaker contact mechanism and a drawer type breaker, comprising a support member and a static terminal contact group, the static terminal contact group comprises a static support and a plurality of static wiring terminal units which are fixedly installed on the static support in sequence; and the static bracket is configured to be movably connected with the mounting surface of the supporting piece through the movable connecting structure, so that the static terminal contact group can generate a self-adaptive fine adjustment action relative to the mounting surface of the supporting piece when the static terminal contact group is in plug-in connection with the movable terminal contact group of the circuit breaker. According to the utility model, the static terminal contact group is movably connected with the mounting surface of the support member through the movable connection structure, so that the static terminal contact group can generate self-adaptive fine tuning action relative to the mounting surface of the support member when the static terminal contact group is in plug-in connection with the moving terminal contact group of the circuit breaker; therefore, the installation precision requirement of the static terminal contact group is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a static terminal contact group, a circuit breaker contact mechanism, and a drawer-type circuit breaker. Background Technology

[0002] In existing drawer-type circuit breakers, the stationary terminal contact group is usually fixed. When it is plugged into the corresponding moving terminal contact group, the stationary terminal contact group has no room for micro-movement. This requires a high degree of alignment accuracy between the stationary terminal contact group and the corresponding moving terminal contact group. Otherwise, inaccurate alignment may lead to unreliable contact between the corresponding moving contact piece and the stationary contact piece. Achieving high alignment accuracy will inevitably increase the installation difficulty to a certain extent, which is not conducive to improving production efficiency. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a stationary terminal contact group that is movably connected to the mounting surface of the support member through a movable connection structure. This allows the stationary terminal contact group to perform adaptive fine-tuning relative to the mounting surface of the support member when it is plugged into the moving terminal contact group of the circuit breaker. This reduces the installation accuracy requirements of the stationary terminal contact group and helps to improve production efficiency.

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

[0005] A stationary terminal contact assembly is used in a circuit breaker, comprising a support and a stationary terminal contact assembly. The stationary terminal contact assembly includes a stationary bracket and a plurality of stationary terminal units fixedly mounted on the stationary bracket in sequence. The stationary bracket is configured to be movably connected to the mounting surface of the support via a movable connection structure, so that the stationary terminal contact assembly can perform adaptive fine-tuning relative to the mounting surface of the support when it is plugged into the moving terminal contact assembly of the circuit breaker.

[0006] Furthermore, the mounting surfaces of the static bracket and the support are connected by a movable hook structure, and a movable gap is reserved between the mounting surfaces of the static bracket and the support.

[0007] Furthermore, a mounting hole is provided on the mounting surface of the support component, and a hook is provided on the back of the static bracket to be movably attached to the mounting hole, with a clearance reserved between the hook and the mounting hole for vertical and horizontal movement.

[0008] Furthermore, the hook's top surface has an arc-shaped structure that reduces friction during movement.

[0009] Furthermore, the supporting component is the arc-extinguishing cover of the circuit breaker drawer seat.

[0010] Based on the same inventive concept, this utility model also provides a circuit breaker contact mechanism, including a moving terminal contact group and the above-mentioned stationary terminal contact group. The moving terminal contact group includes a moving bracket and a plurality of moving terminal units fixedly installed on the moving bracket in sequence. An insertion guide structure is provided between the moving bracket and the stationary bracket to guide the insertion process of the moving terminal contact group and the stationary terminal contact group.

[0011] Furthermore, a guide slot and a guide rib are provided between the static support and the moving support. The guide slot and the guide rib are connected to form an interlocking guide structure to guide the interlocking process of the moving terminal contact group and the static terminal contact group.

[0012] Furthermore, the insertion port of the guide rib is flared, and the head of the guide slot has a chamfered structure.

[0013] Furthermore, the stationary terminal unit includes a stationary terminal housing, and the moving terminal unit includes a moving terminal housing. The stationary terminal housing has a mating space for the moving terminal housing to be inserted. A first stationary boss and a second stationary boss are provided in the mating space of the stationary terminal housing. A first moving boss and a second moving boss are formed on the moving terminal housing. When the moving terminal housing is inserted into the mating space of the stationary terminal housing and is in the test state position, the first moving boss and the first stationary boss abut together to improve the mating reliability of the stationary terminal housing and the terminal housing. When the moving terminal housing is pushed further in, the first moving boss and the first stationary boss are offset from each other to reduce the frictional resistance during the sliding process of the moving terminal housing. When the moving terminal housing is pushed further in until the connection state position, the first moving boss and the second stationary boss abut together, and the second moving boss and the first stationary boss abut together to improve the mating reliability of the stationary terminal housing and the moving terminal housing.

[0014] Furthermore, a stationary rib and a moving slot are provided between the stationary terminal housing and the moving terminal housing to cooperate with each other. The stationary rib and the moving slot are engaged to guide the mating connection between the stationary terminal housing and the moving terminal housing.

[0015] Based on the same inventive concept, this utility model also provides a drawer-type circuit breaker, including any of the above-described stationary terminal contact groups or circuit breaker contact mechanisms.

[0016] The above technical solution has the following advantages or beneficial effects:

[0017] In the static terminal contact group, circuit breaker contact mechanism, and drawer-type circuit breaker described in this utility model, the static terminal contact group is movably connected to the support through a movable connection structure. Compared with the conventionally fixed static terminal contact group, the static terminal contact group has a certain fine-tuning clearance on the support. Thus, when it is plugged into the moving terminal contact group of the circuit breaker, it can perform adaptive fine-tuning relative to the mounting surface of the support, effectively reducing the installation alignment accuracy requirements between the static terminal contact group and the corresponding moving terminal contact group. This reduces the difficulty of installation and operation, thereby improving assembly and production efficiency. Secondly, the fine-tunable static terminal contact group can also effectively ensure that it can be plugged into the moving terminal contact group more accurately, thereby improving the connection reliability between the two and avoiding problems such as unreliable and unstable connection caused by inaccurate alignment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the installation structure of the stationary terminal contact assembly according to an embodiment of the present invention.

[0019] Figure 2 This is an exploded structural diagram of the stationary terminal contact assembly and support member according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the mating structure between the stationary terminal contact group and the support member according to an embodiment of this utility model.

[0021] Figure 4 This is an exploded three-dimensional structural diagram of the stationary terminal contact assembly according to an embodiment of the present invention.

[0022] Figure 5 This is an exploded three-dimensional structural diagram of the moving terminal contact assembly according to an embodiment of the present invention.

[0023] Figure 6 This is a three-dimensional structural diagram of the stationary terminal contact group and the moving terminal contact group according to an embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the mating structure of the stationary terminal contact group and the moving terminal contact group in the test position according to an embodiment of this utility model.

[0025] Figure 8 This is a schematic diagram of the mating structure of the stationary terminal contact group and the moving terminal contact group in the middle of the interlocking position according to an embodiment of the present utility model.

[0026] Figure 9 This is a schematic diagram of the mating structure of the stationary terminal contact group and the moving terminal contact group in the connection position according to an embodiment of the present invention.

[0027] Label Explanation:

[0028] 1. Support component; 2. Stationary terminal contact group; 3. Moving terminal contact group; 11. Mounting surface; 21. Stationary bracket; 22. Stationary terminal unit; 31. Moving bracket; 32. Moving terminal unit; 111. Hanging hole; 211. Hook; 212. Guide slot; 221. Stationary terminal housing; 311. Guide rib; 321. Moving terminal housing; 2211. First stationary boss; 2212. Second stationary boss; 2213. Stationary rib; 3211. First moving boss; 3212. Second moving boss; 3213. Moving slot. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0030] 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.

[0031] Please refer to the appendix. Figure 1 To be continued Figure 9 One embodiment of this utility model provides a stationary terminal contact group, including a support member 1 and a stationary terminal contact group 2. The stationary terminal contact group 2 includes a stationary bracket 21 and a plurality of stationary terminal units 22 that are fixedly mounted on the stationary bracket 21 in sequence. The stationary bracket 21 is configured to be movably connected to the mounting surface 11 of the support member 1 through a movable connection structure, so that the stationary terminal contact group 2 can perform adaptive fine-tuning action relative to the mounting surface 11 of the support member 1 when it is plugged into the moving terminal contact group 3 of the circuit breaker. It is understood that in this embodiment, since the stationary terminal contact group 2 is movably connected to the support member 1 through a movable connection structure, compared with the conventional fixed stationary terminal contact group, the stationary terminal contact group 2 has a certain fine-tuning clearance on the support member 1. Thus, when it is plugged into the moving terminal contact group 3 of the circuit breaker, it can perform adaptive fine-tuning relative to the mounting surface 11 of the support member 1, which effectively reduces the installation alignment accuracy requirements of the stationary terminal contact group 2 and the corresponding moving terminal contact group 3, reduces the difficulty of installation operation, and improves assembly and production efficiency. Secondly, the fine-tuning stationary terminal contact group 2 can also effectively ensure that it can be plugged into the moving terminal contact group 3 more accurately, thereby improving the connection reliability between the two and avoiding problems such as unreliable and unstable connection caused by inaccurate alignment.

[0032] Please refer to the appendix. Figure 1 To be continued Figure 3In one preferred embodiment, the static bracket 21 and the mounting surface 11 of the support member 1 are movably connected via a movable hook structure, and a movable gap is reserved between the static bracket 21 and the mounting surface 11 of the support member 1. It should be clarified that this movable gap is limited to the static bracket 21's vertical and horizontal translation relative to the mounting surface 11 of the support member 1.

[0033] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, a hook hole 111 is provided on the mounting surface 11 of the support member 1, and a hook 211 is provided on the back of the static bracket 21 for movably hooking with the hook hole 111, with a pre-reserved vertical and horizontal clearance between the hook 211 and the hook hole 111. However, those skilled in the art should understand that in other embodiments, the static bracket 21 can also be movably connected to the mounting surface 11 of the support member 1 by other existing movable connection structures, and is not limited to the specific implementation disclosed in this embodiment. For example, several studs are provided on the back of the static bracket 21, and several through holes with a diameter slightly larger than the outer diameter of the studs are opened on the mounting surface 11 of the support member 1. After the studs pass through the through holes, nuts are locked in place. By tightening the nuts to an appropriate position, the static bracket 21 can be movably connected to the mounting surface 11 of the support member 1 by slight lateral movement.

[0034] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, the top surface of the hook 211 has an arc-shaped structure that can reduce the friction of movement.

[0035] Please refer to the appendix. Figure 1 To be continued Figure 3 In one preferred embodiment, the support member 1 is an arc-extinguishing cover for a circuit breaker drawer seat.

[0036] Please refer to the appendix. Figure 1 To be continued Figure 6 An embodiment of this utility model also provides a circuit breaker contact mechanism, including a moving terminal contact group 3 and the aforementioned stationary terminal contact group 2. The moving terminal contact group 3 includes a moving bracket 31 and a plurality of moving terminal units 32 that are sequentially fixed on the moving bracket 31. An insertion guide structure is provided between the moving bracket 31 and the stationary bracket 21 to guide the insertion process of the moving terminal contact group 3 and the stationary terminal contact group 2.

[0037] Please refer to the appendix. Figure 4 To be continued Figure 6In one preferred embodiment, a guide slot 212 and a guide rib 311 that cooperate with each other are provided between the stationary support 21 and the movable support 31. The insertion and engagement of the guide slot 212 and the guide rib 311 form an insertion guide structure to guide the insertion process of the movable terminal contact group 3 and the stationary terminal contact group 2. In this embodiment, the insertion and engagement of the guide slot 212 and the guide rib 311 between the stationary support 21 and the movable support 31 provides a guiding and positioning function for the insertion connection of the stationary terminal contact group 2 and the movable terminal contact group 3, ensuring a stable and reliable connection between the movable terminal contact group 3 and the stationary terminal contact group 2. However, those skilled in the art should understand that in other embodiments, the positions of the guide slot and the guide rib can be interchanged, and the embodiment is not limited to the specific implementation disclosed herein.

[0038] Please refer to the appendix. Figure 4 To be continued Figure 6 In one preferred embodiment, the insertion port of the guide rib 311 is flared, and the head of the guide slot 212 has a chamfered structure. Since the stationary terminal contact group 2 is movably connected, by setting the insertion port of the guide rib 311 to be flared and the head of the guide slot 212 to have a chamfered structure, the two can be more smoothly and steadily connected.

[0039] Please refer to the appendix. Figure 4 To be continued Figure 9In one preferred embodiment, the stationary terminal unit 22 includes a stationary terminal housing 221, and the movable terminal unit 32 includes a movable terminal housing 321. The stationary terminal housing 221 has a mating space for the movable terminal housing 321 to be inserted into. A first stationary boss 2211 and a second stationary boss 2212 are provided in the mating space of the stationary terminal housing 221. A first movable boss 3211 and a second movable boss 3212 are formed on the movable terminal housing 321. When the movable terminal housing 321 is inserted into the mating space of the stationary terminal housing 221 and is in a test state position, the first movable boss 3211 and the first… The stationary bosses 2211 abut together to improve the reliability of the insertion and engagement between the stationary terminal housing 221 and the terminal housing 321. When the moving terminal housing 321 is pushed in further, the first moving boss 3211 and the first stationary boss 2211 are offset from each other to reduce the frictional resistance during the sliding process of the moving terminal housing 321. When the moving terminal housing 321 is pushed in further until the connection position, the first moving boss 3211 and the second stationary boss 2212 abut together, and the second moving boss 3212 and the first stationary boss 2211 abut together to improve the reliability of the insertion and engagement between the stationary terminal housing 221 and the moving terminal housing 321. In this embodiment, when the switch is in the disengaged position, the stationary terminal contact group 2 and the moving terminal contact group 3 do not contact the moving and stationary conductive pieces. When the switch is in the test position, the corresponding moving and stationary conductive pieces need to reliably contact and conduct electricity. In addition to utilizing the elastic contact of the conductive pieces, in this embodiment, a first stationary boss 2211 and a second stationary boss 2212 are provided in the insertion space of the stationary terminal housing 221, and a first moving boss 3211 and a second moving boss 3212 are formed on the moving terminal housing 321. In the test position, the first moving boss 3211 abuts against the first stationary boss 2211. At this time, only a small gap remains between the two housings. The very small gap prevents the conductive sheet from failing to make reliable contact due to improper installation or other errors. As the moving terminal contact group 3 continues to move, the first moving boss 3211 and the first stationary boss 2211 are offset from each other to reduce the frictional resistance during the sliding process of the moving terminal housing 321, which becomes a fit between the boss and the groove, reducing friction during the sliding process. When the connection position is reached, a reliable connection is required. The first moving boss 3211 and the second stationary boss 2212 abut together, and at the same time, the second moving boss 3212 and the first stationary boss 2211 abut together to improve the reliability of the insertion fit between the stationary terminal housing 221 and the moving terminal housing 321.

[0040] Please refer to the appendix. Figure 4 To be continued Figure 9In one preferred embodiment, a stationary rib 2213 and a moving slot 3213 are provided between the stationary terminal housing 221 and the moving terminal housing 321 to cooperate with each other. The insertion and cooperation of the stationary rib 2213 and the moving slot 3213 guides the insertion and connection of the stationary terminal housing 221 and the moving terminal housing 321. It can be understood that in this embodiment, the insertion and cooperation of the stationary rib 2213 and the moving slot 3213, the abutment and cooperation of the first moving boss 3211 and the second stationary boss 2212, the abutment and cooperation of the second moving boss 3212 and the first stationary boss 2211, and the insertion and guiding cooperation of the guide slot 212 and the guide rib 311 effectively ensure the accuracy and reliability of the insertion and connection of the stationary terminal contact group 2 and the moving terminal contact group 3.

[0041] Please refer to the appendix. Figure 1 To be continued Figure 9 An embodiment of this utility model also provides a drawer-type circuit breaker, including any of the stationary terminal contact groups or circuit breaker contact mechanisms described above.

[0042] 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 stationary terminal contact assembly, applied in a circuit breaker, characterized in that: The device includes a support (1) and a stationary terminal contact group (2). The stationary terminal contact group (2) includes a stationary bracket (21) and a plurality of stationary terminal units (22) that are fixedly mounted on the stationary bracket (21) in sequence. The stationary bracket (21) is configured to be movably connected to the mounting surface (11) of the support (1) via a movable connection structure, so that the stationary terminal contact group (2) can perform adaptive fine-tuning action relative to the mounting surface (11) of the support (1) when it is plugged into the moving terminal contact group (3) of the circuit breaker.

2. The stationary terminal contact assembly according to claim 1, characterized in that: The static bracket (21) and the mounting surface (11) of the support member (1) are connected by a movable hook structure, and a movable gap is reserved between the static bracket (21) and the mounting surface (11) of the support member (1).

3. The stationary terminal contact assembly according to claim 2, characterized in that: A mounting hole (111) is provided on the mounting surface (11) of the support member (1), and a hook (211) is provided on the back of the static bracket (21) to be movably attached to the mounting hole (111), and a clearance is reserved between the hook (211) and the mounting hole (111) for vertical and horizontal movement.

4. The stationary terminal contact assembly according to claim 2, characterized in that: The top surface of the hook (211) has an arc-shaped structure that can reduce the friction of movement.

5. The stationary terminal contact assembly according to claim 1, characterized in that: The support component (1) is the arc-extinguishing cover of the circuit breaker drawer seat.

6. A circuit breaker contact mechanism, characterized in that: The device includes a moving terminal contact group (3) and a stationary terminal contact group (2) as described in any one of claims 1 to 5. The moving terminal contact group (3) includes a moving bracket (31) and a plurality of moving terminal units (32) that are fixedly mounted on the moving bracket (31) in sequence. An interlocking guide structure is provided between the moving bracket (31) and the stationary bracket (21) to guide the interlocking process of the moving terminal contact group (3) and the stationary terminal contact group (2).

7. The circuit breaker contact mechanism according to claim 6, characterized in that: A guide slot (212) and a guide rib (311) are provided between the stationary support (21) and the moving support (31). The guide slot (212) and the guide rib (311) are connected to form an insertion guide structure to guide the insertion process of the moving terminal contact group (3) and the stationary terminal contact group (2). The insertion port of the guide rib (311) is flared, and the head of the guide slot (212) has a chamfered structure.

8. The circuit breaker contact mechanism according to claim 6, characterized in that: The stationary terminal unit (22) includes a stationary terminal housing (221), and the movable terminal unit (32) includes a movable terminal housing (321). The stationary terminal housing (221) has a mating space for the movable terminal housing (321) to be inserted into. A first stationary boss (2211) and a second stationary boss (2212) are provided in the mating space of the stationary terminal housing (221). A first movable boss (3211) and a second movable boss (3212) are formed on the movable terminal housing (321). When the movable terminal housing (321) is inserted into the mating space of the stationary terminal housing (221) and is in a test state position, the first movable boss (3211) and the first stationary boss (2212) are mated. 211) They are pressed together to improve the reliability of the insertion and engagement between the stationary terminal housing (221) and the terminal housing (321). When the moving terminal housing (321) is pushed in further, the first moving boss (3211) and the first stationary boss (2211) are offset from each other to reduce the frictional resistance during the sliding process of the moving terminal housing (321). When the moving terminal housing (321) is pushed in further until the connection position, the first moving boss (3211) and the second stationary boss (2212) are pressed together, and the second moving boss (3212) and the first stationary boss (2211) are pressed together to improve the reliability of the insertion and engagement between the stationary terminal housing (221) and the moving terminal housing (321).

9. The circuit breaker contact mechanism according to claim 8, characterized in that: A stationary rib (2213) and a moving slot (3213) are provided between the stationary terminal housing (221) and the moving terminal housing (321). The stationary rib (2213) and the moving slot (3213) are inserted and engaged to guide the insertion and connection of the stationary terminal housing (221) and the moving terminal housing (321).

10. A drawer-type circuit breaker, characterized in that: Includes the stationary terminal contact group as described in any one of claims 1 to 5 or the circuit breaker contact mechanism as described in any one of claims 6 to 9.

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