Novel secondary interlocking device

Abstract

The utility model relates to the technical field of mechanical interlocking, and discloses a novel secondary interlocking device, which comprises a high-voltage cabinet body, a female socket, a male plug and an interlocking assembly, a mounting plate is fixedly arranged in the high-voltage cabinet body, a mounting seat is fixedly arranged below the mounting plate, and the interlocking assembly is fixedly arranged at the lower end part of the mounting seat. The interlocking assembly comprises a strip-shaped sheet metal part, the lower end of the strip-shaped sheet metal part is slidably connected with an L-shaped push plate, and the front side and the rear side of the upper end of the strip-shaped sheet metal part are provided with a second guide groove and a first guide groove respectively. The side, away from the L-shaped push plate, of the strip-shaped sheet metal part is connected with a shifting plate through a first pin shaft, the first pin shaft is arranged above the strip-shaped sheet metal part and movably connected into the second guide groove, a second pin shaft is slidably connected into the first guide groove, and the right side of the shifting plate is connected with the second pin shaft through a reset spring set. According to the scheme, the connection tightness of the male plug and the female socket can be improved, and the structure is compact.

Description

Technical Field

[0001] This utility model relates to the field of mechanical interlocking technology, specifically a novel secondary interlocking device. Background Technology

[0002] Aviation male connectors are a member of the connector family. Their name distinguishes them from other connectors. Their main function is to connect power or signals. Especially for wire harnesses with a large number of cores, using aviation male connectors and sockets is not only safe and reliable, but also convenient to operate and more aesthetically pleasing.

[0003] Existing switchgear's aviation male connectors may operate in harsh environments, such as high temperature, high humidity, and dust, potentially requiring more frequent disassembly for cleaning and inspection to ensure proper functioning. In existing technology, a handcart drives the connecting assembly, which in turn drives a lever via a linkage assembly to restrict the position of the installed male connector. Figure 2 As shown, the lever moves up and down, which can lead to incomplete positioning of the male plug and cause wobbling. Furthermore, space is required above the lever, resulting in a relatively large required space and a less compact structure. To address this, we propose a novel secondary interlocking device. Utility Model Content

[0004] The purpose of this utility model is to provide a novel secondary interlocking device to solve the problems mentioned in the background art, such as the incomplete limiting of the male plug, the wobbling, and the need for space above the lever, which makes the required space relatively large and the structure not compact enough.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel secondary interlocking device includes a high-voltage cabinet, a female socket, a male plug, and an interlocking assembly. An installation plate is fixedly installed inside the high-voltage cabinet, and an installation base is fixedly installed below the installation plate. The interlocking assembly is fixedly installed at the lower end of the installation base. A snap-fit ​​component is rotatably connected to the male plug via an adapter pin. The snap-fit ​​component has a locking slot. The interlocking assembly includes a strip-shaped sheet metal part. An L-shaped push plate is slidably connected to the lower end of the strip-shaped sheet metal part. Guide grooves two and one are respectively provided on the front and rear sides of the upper end of the strip-shaped sheet metal part. A lever is connected to the side of the strip-shaped sheet metal part away from the L-shaped push plate via a pin. The pin is located above the strip-shaped sheet metal part and is movably connected inside the guide groove two. The pin is slidably connected inside the guide groove one. The right side of the lever is connected to the pin two via a reset spring assembly.

[0006] Preferably, the lever plate is in movable contact with the buckle, and the lever plate is located on the outside of the buckle.

[0007] Preferably, the L-shaped push plate is L-shaped, and the L-shaped push plate is attached to the strip sheet metal part.

[0008] Preferably, the longitudinal sections of both pin one and pin two are "I" shaped.

[0009] Preferably, the front end face of the buckle is provided with a guide slope that tilts to the right and rear, and the buckle is engaged with the male plug from front to back.

[0010] Preferably, the female socket is provided with limit pins on both the upper and lower end faces, and the limit pins are movably engaged inside the slot.

[0011] Preferably, the second pin is fixedly mounted on the L-shaped push plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This novel secondary interlocking device, by setting an interlocking component on the mounting plate of the high-voltage cabinet to restrict the position of the male plug, utilizes the pushing of the handcart to cause the L-shaped push plate to move from front to back. At this time, the second pin slides from front to back inside the first guide groove. Simultaneously, the return spring assembly deforms. As the handcart continues to be pushed in, after the return spring reaches its deformation limit, it can pull the lever to swing counterclockwise around the connection of the first pin at a certain angle, thereby causing the lever to disengage from the position restriction of the latching piece on the male plug. In this state, it is convenient to clean and inspect the aviation socket. By having the lever engage with the latching piece on the male plug, the connection tightness between the male plug and the female socket can be further improved. Moreover, the lever swings to the side, and the swing position occupies the front space of the interlocking component, making the internal components of the switch cabinet more compactly installed. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the interlocking assembly of this utility model in its installation state (side plate not shown).

[0015] Figure 2 This is a schematic diagram of the existing interlocking structure of the high-voltage switchgear (mounting base not shown).

[0016] Figure 3 This is a schematic diagram of the improved interlocking assembly structure of this utility model (mounting base not shown).

[0017] Figure 4 This is a schematic diagram of the buckle structure of this utility model;

[0018] Figure 5 This is a first-view structural schematic diagram of the interlocking assembly of this utility model;

[0019] Figure 6This is a second-view structural schematic diagram of the interlocking assembly of this utility model.

[0020] In the diagram: 1. High-voltage cabinet; 2. Mounting plate; 21. Male plug; 22. Female socket; 23. Clip; 24. Bayonet; 25. Adapter pin; 26. Guide slope; 27. Mounting base; 28. Pin 2; 29. ​​Limit pin; 3. Interlocking assembly; 33. Strip sheet metal part; 34. L-shaped push plate; 35. Guide groove 1; 36. Paddle plate; 37. Return spring assembly; 38. Guide groove 2; 39. Pin 1. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 This utility model provides a technical solution: a novel secondary interlocking device, including a high-voltage cabinet 1, a female socket 22, a male plug 21, and an interlocking assembly 3. An installation plate 2 is fixedly installed inside the high-voltage cabinet 1, and an installation base 27 is fixedly installed below the installation plate 2. The installation base 27 and the installation plate 2 are fixedly installed. The interlocking assembly 3 is fixedly installed at the lower end of the installation base 27. A latching member 23 is rotatably connected to the male plug 21 via an adapter pin 25. The latching member 23 is provided with a locking slot 24. Limiting pins 29 are provided on both the upper and lower ends of the female socket 22, and the limiting pins 29 are movably engaged inside the locking slots 24. The male plug 21 is inserted into the female socket 22 from front to back. When cleaning and inspection of the aviation socket is required, the male plug 21 can be removed by disengaging the interlocking assembly 3 from its positional restriction, making operation convenient.

[0023] Please see Figure 3-6 The interlocking assembly 3 includes a strip-shaped sheet metal part 33. An L-shaped push plate 34 is slidably connected to the lower end of the strip-shaped sheet metal part 33. The L-shaped push plate 34 is L-shaped and fits snugly against the strip-shaped sheet metal part 33. Guide grooves 2 38 and 1 35 are respectively provided on the front and rear sides of the upper end of the strip-shaped sheet metal part 33. Both guide grooves 2 38 and 1 35 are through grooves, and they are different, with each having a length less than half the length of the strip-shaped sheet metal part 33. By providing guide grooves 2 38 and 1 35, the position of the pin described below can be easily guided.

[0024] Furthermore, a lever plate 36 is connected to the side of the strip sheet metal part 33 away from the L-shaped push plate 34 via a first pin 39. The first pin 39 is located above the strip sheet metal part 33 and is movably connected inside the second guide groove 38. The second pin 28 is slidably connected inside the first guide groove 35. The right side of the lever plate 36 is connected to the second pin 28 via a return spring assembly 37. The return spring assembly 37 is composed of multiple sets of springs connected end to end, and the number of springs inside the return spring assembly 37 is set according to the actual length of use. The longitudinal section of both the first pin 39 and the second pin 28 is I-shaped. The second pin 28 is fixedly installed on the L-shaped push plate 34. The first pin 39 and the second pin 28 are parallel to each other.

[0025] In this example, the toggle plate 36 is in active contact with the latching member 23, and the toggle plate 36 is located on the outside of the latching member 23. The front end face of the latching member 23 is provided with a guide slope 26 that tilts to the right and rear, and the latching member 23 is engaged with the male plug 21 from front to back. The guide slope 26 facilitates the engagement of the toggle plate 36 with the latching member 23. When the toggle plate 36 is engaged with the latching member 23, the latch 24 on the latching member 23 engages with the limiting pin 29. At the same time, the toggle plate 36 restricts the outward position of the latching member 23, further ensuring a stable connection between the male plug 21 and the female socket 22.

[0026] Working Principle: In this novel secondary interlocking device, when the trolley (a key component in withdrawable switchgear, generally of two types: PT trolley and switch (circuit breaker) trolley) is pushed into the high-voltage cabinet 1, the trolley pushes the L-shaped push plate 34 from front to back. At this time, the second pin 28 slides from front to back inside the guide groove 35. Simultaneously, the return spring assembly 37 deforms. As the trolley continues to be pushed in, after the return spring assembly 37 reaches its deformation limit, it can pull the lever 36 to swing counterclockwise around the connection of the first pin 39 at a certain angle, thereby causing the lever 36 to disengage from the position restriction of the latch 23 on the male connector 21. In this state, it is convenient to clean and inspect the aviation socket. Conversely, after the trolley is pulled out, the elastic return action of the return spring assembly 37 allows the lever 36 to return to its original position, thus achieving the position restriction of the latch 23 on the male connector 21.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel secondary interlocking device, comprising a high-voltage cabinet (1), a female socket (22), a male plug (21), and an interlocking assembly (3), wherein a mounting plate (2) is fixedly installed inside the high-voltage cabinet (1), a mounting base (27) is fixedly installed below the mounting plate (2), the interlocking assembly (3) is fixedly installed at the lower end of the mounting base (27), and a buckle (23) is rotatably connected to the male plug (21) via an adapter pin (25), and the buckle (23) is provided with a latch (24), characterized in that: The interlocking assembly (3) includes a strip sheet metal part (33). The lower end of the strip sheet metal part (33) is slidably connected to an L-shaped push plate (34). The upper end of the strip sheet metal part (33) is provided with a guide groove two (38) and a guide groove one (35) on the front and rear sides respectively. The side of the strip sheet metal part (33) away from the L-shaped push plate (34) is connected to a lever plate (36) through a pin shaft one (39). The pin shaft one (39) is located above the strip sheet metal part (33) and is movably connected inside the guide groove two (38). The guide groove one (35) is slidably connected to a pin shaft two (28). The right side of the lever plate (36) is connected to the pin shaft two (28) through a reset spring assembly (37).

2. A novel secondary interlock device according to claim 1, characterized in that: The dial (36) is in active contact with the buckle (23), and the dial (36) is located on the outside of the buckle (23).

3. A novel secondary interlock device as claimed in claim 1, wherein: The L-shaped push plate (34) is L-shaped and is attached to the strip sheet metal part (33).

4. A novel secondary interlock device according to claim 1, characterized in that: The longitudinal sections of both pin 1 (39) and pin 2 (28) are "I" shaped.

5. A novel secondary interlock device according to claim 1, characterized in that: The front end face of the buckle (23) is provided with a guide slope (26) that tilts to the right and rear, and the buckle (23) is snapped onto the male plug (21) from front to back.

6. A novel secondary interlock device according to claim 1, characterized in that: The female socket (22) is provided with limit pins (29) on both the upper and lower ends, and the limit pins (29) are movably engaged inside the slot (24).

7. A novel secondary interlock device as claimed in claim 1, wherein: The second pin (28) is fixedly installed on the L-shaped push plate (34).

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