Door interlocking structure of three-station isolation mechanism and three-station circuit breaker

Abstract

The utility model relates to the field of circuit breakers, and provides a door interlocking structure of a three-station isolation mechanism and a three-station circuit breaker, a frame body of the door interlocking structure is provided with a locking structure, and the frame body is also provided with a limiting block and a driving piece; a reset piece is arranged on the limiting block; the driving piece is provided with a step structure. In the using process, the driving piece is driven to abut against the limiting block, the limiting block is pushed to be separated from the locking structure, and replacement abutting is conducted through the step structure of the driving piece. When the locking structure continues to move to the other step face of the step structure, the locking structure moves, and therefore the switching action between locking and unlocking is formed on the step structure. Thus, the limiting block and the driving piece are arranged in a split mode, state switching can be carried out through the driving piece after the limiting block is pushed, the moving stroke is reduced, interference to other parts or structures of the three-station circuit breaker cannot be caused, and usability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of circuit breaker, concretely relates to a door interlocking structure of three position isolation mechanism and three position circuit breaker. BACKGROUND

[0002] Circuit breaker (English name: circuit-breaker, circuit breaker) refers to the switching device that can close, carry and open the current under normal loop conditions and can close, carry and open the current under abnormal loop conditions within the specified time. Among them, the vacuum circuit breaker is named because its arc extinguishing medium and the insulation medium of the contact gap after arc extinguishing are high vacuum; it has the advantages of small size, light weight, suitable for frequent operation and arc extinguishing without maintenance, and is widely used in distribution network.

[0003] When operating the circuit breaker, the circuit needs to be disconnected, and the cabinet door of the circuit breaker can be opened only under the condition of ensuring safety, forming a safe operation purpose. In the application file with the application number CN202310826048.7 and the application name "a five-proof interlocking mechanism and a switch electrical cabinet with the same", it is recorded that the "door interlocking drive plate" drives the "adapter rod" to lock and unlock the cabinet door. However, the design of the door interlocking drive plate will have a part of the door interlocking drive plate extending outside the slide rail when moving to unlock, which will cause the structure of this part to interfere with the lines or other structures in the three position circuit breaker. If the influence needs to be eliminated, the volume of the three position circuit breaker needs to be increased to achieve the purpose of avoiding, resulting in the problem of increasing the volume of the three position circuit breaker. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a door interlocking structure of three position isolation mechanism and three position circuit breaker, which aims at improving the problem of large moving stroke of the door interlocking structure of three position isolation mechanism, resulting in large size of the three position circuit breaker.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a door interlocking structure of three position isolation mechanism, comprising a frame body;

[0006] The frame body is provided with a locking structure sliding in the first direction, and the frame body is also provided with a limiting block abutting against one end surface of the locking structure, and a driving piece for pushing the limiting block and the locking structure apart in the second direction;

[0007] The limiting block is provided with a reset piece for driving itself to reset and abutting against the locking structure again; the driving piece is provided with a stepped structure, and the stepped surface of the stepped structure close to the limiting block is flush with the bottom surface of the limiting block.

[0008] Preferably, the locking structure includes a sliding plate slidably disposed on the frame in a first direction and a pin rod disposed at the bottom of the sliding plate;

[0009] The frame is provided with a horizontal plate through which the free end of the pin rod passes, and a spring in a compressed state is provided between the middle part of the pin rod and the horizontal plate.

[0010] Preferably, the sliding plate is provided with at least one strip-shaped hole arranged along the first direction, and the frame is provided with a sliding member that is slidably arranged within the strip-shaped hole.

[0011] Preferably, the reset component is a tension spring, one end of which is disposed on the frame, and the limiting block is provided with a fixed shaft connected to the other end of the tension spring.

[0012] Preferably, the frame is provided with a first perforated slide rail arranged along the second direction, and the limiting block is provided with a plurality of first sliding bolts that are slidably arranged with the first perforated slide rail at intervals.

[0013] Preferably, the drive component is provided with a connecting plate that is connected to the power source.

[0014] Preferably, the frame is provided with a second hole-type slide rail arranged along the second direction, and the connecting plate is provided with at least one second sliding bolt that is slidably arranged with the second hole-type slide rail.

[0015] A three-position circuit breaker is also provided, including a door interlocking structure of the three-position isolation mechanism as described above.

[0016] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. In use, the driving component pushes against the limiting block, causing it to separate from the locking structure. The driving component then uses its stepped structure to alternately push against the limiting block. As movement continues, the locking structure moves to another step of the stepped structure, causing it to move again. This creates a switching action between locking and unlocking on the stepped structure. By using a separate design for the limiting block and driving component, only the limiting block needs to be pushed, and the driving component is used to switch states. This reduces the travel distance and avoids interference with other parts or structures of the three-position circuit breaker, improving usability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the door interlocking structure of the three-position isolation mechanism described in this utility model from a first-view perspective.

[0019] Figure 2This is a partial frontal view of the door interlocking structure of the three-position isolation mechanism described in this utility model.

[0020] Figure 3 This is a schematic diagram of the door interlocking structure of the three-position isolation mechanism described in this utility model from a second perspective.

[0021] Figure 4 This is a partial view of the rear view of the door interlocking structure of the three-position isolation mechanism described in this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 10. Frame; 11. Horizontal plate; 12. Sliding component; 13. Second hole type slide rail; 14. First hole type slide rail;

[0024] 20. Locking structure; 21. Sliding plate; 22. Pin rod; 23. Spring;

[0025] 211. Slotted hole;

[0026] 30. Limiting block; 31. Reset component; 32. Fixed shaft; 33. First sliding bolt;

[0027] 40. Driving component; 41. Stepped structure; 42. Connecting plate;

[0028] 421. Second sliding bolt. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0030] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] When an element is referred to as being "fixed to," "set on," or "contained on" another element, it can be directly on or indirectly on that other element. When an element is referred to as being "connected to," it can be directly connected to or indirectly connected to that other element.

[0032] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections 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 according to the specific circumstances.

[0033] Example 1

[0034] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this embodiment provides a door interlocking structure for a three-position isolation mechanism, including a frame 10; a locking structure 20 is slidably disposed on the frame 10 in a first direction, a limiting block 30 is also disposed on the frame 10 that abuts against one end face of the locking structure 20, and a driving member 40 that pushes the limiting block 30 and the locking structure 20 apart in a second direction. The first direction and the second direction can be two mutually perpendicular directions; a resetting member 31 is disposed on the limiting block 30 that drives itself to reset and abuts against the locking structure 20 again; the driving member 40 is provided with a stepped structure 41, the stepped surface of the stepped structure 41 close to the limiting block 30 is flush with the bottom surface of the limiting block 30, and the other stepped surface of the stepped structure 41 away from the limiting block 30 is a concave surface. The sliding of the locking structure 20 between the two stepped surfaces realizes the state switching effect between locking and unlocking.

[0035] In this embodiment, the driving member 40 is moved until it abuts against the limiting block 30 for synchronous movement. During the separation of the limiting block 30 from the locking structure 20, the first step of the stepped structure 41 of the driving member 40 will replace the abutment to maintain the state of the locking structure 20. As movement continues, the locking structure 20 will abut against another step of the stepped structure 41, resulting in movement of the locking structure 20 and enabling a switch between unlocked and unlocked states.

[0036] When relocking is required, the drive member 40 moves in the reverse direction, causing the locking structure 20 to switch to the stepped surface flush with the bottom surface of the limit block 30. At this time, the locking structure 20 can switch to the locked state. Simultaneously, the limit block 30 is pulled by the reset member 31 and moves against the drive member 40 until the locking structure 20 and the limit block 30 are back against each other, and the limit block 30 is reset, achieving the switching effect between the unlocked and locked states. The separate structural design allows the limit block 30 to maintain the locked state without affecting the movement of the drive member 40 or performing corresponding operations. It has a flexible design effect, reduces the movement distance for state switching, and simplifies the operation, making it highly practical.

[0037] Furthermore, the reset element 31 can provide a pulling force to the limiting block 30 in the initial state, so that the limiting block 30 and the locking structure 20 form a stable abutting state, thereby improving the stability of the structure. Specifically, in this embodiment, the reset element 31 is a tension spring, one end of which is set on the frame 10, and the limiting block 30 is provided with a fixed shaft 32 connected to the other end of the tension spring. In this way, the tension spring provides elastic force to pull the limiting block 30 to reset, and to provide the elastic force required for the limiting block 30 in the initial state.

[0038] like Figure 1 and Figure 3 As shown, in this embodiment, the locking structure 20 includes a sliding plate 21 slidably disposed on the frame 10 in the first direction and a pin 22 disposed at the bottom of the sliding plate 21; the frame 10 is provided with a horizontal plate 11 through which the free end of the pin 22 passes, and a spring 23 in a compressed state is disposed between the middle part of the pin 22 and the horizontal plate 11.

[0039] Specifically, a sliding structure is designed between the sliding plate 21 and the frame 10, such as a slide rail structure, a slide rail structure with a strip hole 211, or a slide groove structure. Then, a pin 22 is designed on the sliding plate 21. The pin 22 is used for insertion and locking or separation and unlocking. This allows for flexible design of the pin 22 to adapt to different pin structure designs. The spring 23 on the pin 22 provides a restoring elastic force and makes the pin 22 and the sliding plate 21 have an upward pushing force, so that the sliding plate 21 has an elastic force that pushes against the limiting block 30.

[0040] like Figure 3 As shown, in this embodiment, the sliding plate 21 is provided with at least one strip hole 211 arranged along the first direction, and the frame 10 is provided with a sliding member 12 that is slidably arranged in the strip hole 211. The sliding member 12 can be a bolt. In this way, the bolt passes through the strip hole 211 and is locked on the frame 10, so that the sliding plate 21 is limited to the strip hole 211 and moves within it. The structure is simple and stable.

[0041] like Figure 1 and Figure 3 As shown, in this embodiment, the frame 10 is provided with a first hole slide rail 14 arranged along the second direction. The first hole slide rail 14 can be a strip-shaped through hole, such as a waist-shaped hole. The limiting block 30 is provided with a number of first sliding bolts 33 that slide with the first hole slide rail 14 at intervals. The first sliding bolts 33 can be bolts. By designing multiple bolts side by side in the first hole slide rail 14, stable sliding limit can be provided to ensure the stability of movement.

[0042] like Figure 1 and Figure 2 As shown, in this embodiment, the driving component 40 is provided with a connecting plate 42 connected to the power source, and the frame 10 is provided with a second-hole slide rail 13 arranged along the second direction. The second-hole slide rail 13 can be a strip-shaped through hole. The connecting plate 42 is provided with at least one second sliding bolt 421 that is slidably disposed with the second-hole slide rail 13. The second sliding bolt 421 can be a bolt, so that when the connecting plate 42 is moved, the bolt slides in the second-hole slide rail 13. This achieves the goal of limiting the travel of the driving component 40 through the second-hole slide rail 13, providing stable driving force or operating action, and ensuring the stability of the structure operation.

[0043] Furthermore, the drive component 40 is provided with a connecting plate 42, which provides design flexibility to adapt to different power sources and / or different directions of connection. For example, in a worm gear structure driven by a motor, a rack is designed on the connecting plate 42 to cooperate with the motor's gears for drive; or, a rod or plate is bolted to the connecting plate 42 to form a linkage, thereby achieving the effect of being driven by a linear motor, etc. In this way, it can be driven by a worm gear mechanism, a lead screw structure, or a gear and rack transmission, etc.

[0044] Example 2

[0045] This embodiment provides a three-position circuit breaker, including a door interlocking structure of the three-position isolation mechanism as described in Embodiment 1. By using the door interlocking structure of the three-position isolation mechanism, the cabinet door of the three-position circuit breaker can be plugged in and locked or unlocked. The separate structural design allows the use of limit blocks to maintain the locked state without affecting the movement of the drive components or the corresponding operation. It has a flexible design effect, reduces the travel distance for state switching, and is simple to operate, with good practicality and safety.

[0046] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A door interlocking structure for a three-position isolation mechanism, characterized in that, Including the frame; A locking structure is slidably provided on the frame in a first direction. The frame is also provided with a limiting block that abuts against one end face of the locking structure, and a driving member that pushes the limiting block to separate from the locking structure in a second direction. The limiting block is provided with a reset component that drives itself to reset and re-abuts against the locking structure; the driving component is provided with a stepped structure, and the stepped surface of the stepped structure close to the limiting block is flush with the bottom surface of the limiting block.

2. The door interlocking structure of the three-station isolation mechanism according to claim 1, characterized in that: The locking structure includes a sliding plate that is slidably disposed on the frame in a first direction and a pin rod disposed at the bottom of the sliding plate; The frame is provided with a horizontal plate through which the free end of the pin rod passes, and a spring in a compressed state is provided between the middle part of the pin rod and the horizontal plate.

3. The door interlocking structure of the three-station isolation mechanism according to claim 2, characterized in that, The sliding plate is provided with at least one strip-shaped hole arranged along a first direction, and the frame is provided with a sliding member that is slidably arranged within the strip-shaped hole.

4. The door interlocking structure of the three-station isolation mechanism according to claim 1, characterized in that, The reset component is a tension spring, one end of which is mounted on the frame, and the limiting block is provided with a fixed shaft that is connected to the other end of the tension spring.

5. The door interlocking structure of the three-station isolation mechanism according to claim 4, characterized in that, The frame is provided with a first hole slide rail arranged along the second direction, and the limiting block is provided with a plurality of first sliding bolts that slide with the first hole slide rail at intervals.

6. The door interlocking structure of the three-station isolation mechanism according to claim 1, characterized in that, The drive unit is equipped with a connecting plate that is connected to the power source.

7. The door interlocking structure of the three-station isolation mechanism according to claim 6, characterized in that, The frame is provided with a second hole slide rail arranged along the second direction, and the connecting plate is provided with at least one second sliding bolt that is slidably arranged with the second hole slide rail.

8. A three-position circuit breaker, characterized in that, The door interlocking structure includes the three-station isolation mechanism as described in any one of claims 1 to 7.

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