Dustproof circuit breaker shell

Abstract

The utility model relates to a dustproof circuit breaker housing. The electric connector comprises an upper shell, a lower shell, a wiring opening, a wiring terminal and a pre-tightening bolt, and is further provided with a hinged sealing plate and a dustproof assembly. The dustproof assembly comprises a pressing plate, a connecting plate, a silica gel pad and a memory sponge block, the pressing plate is rotationally connected with the pre-tightening bolt and provided with a T-shaped sliding groove, the connecting plate is matched with the T-shaped sliding groove through the T-shaped sliding groove, the silica gel pad is connected with the connecting plate and the memory sponge block through a micropore interlocking structure and mucilage glue, and the hinged sealing plate is rotationally connected with the upper shell and the lower shell through a rotating shaft. The shell can effectively prevent dust, the wiring opening is blocked by the hinged sealing plate and the memory sponge block after wiring, dust entering is reduced, the memory sponge block is attached to the wire to enhance the sealing performance, the dustproof performance of the circuit breaker shell is remarkably improved, and the stable operation environment of internal electrical elements is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to a dustproof circuit breaker housing. Background Technology

[0002] In power systems, circuit breakers are crucial protective electrical devices, and their stability and reliability are paramount. The circuit breaker housing, as a key component protecting internal electrical components, needs excellent dustproof performance. However, existing circuit breaker housings have numerous shortcomings in dustproofing. Traditional circuit breaker housings typically only have simple terminals at the wiring openings for connecting wires, lacking effective dustproof structures. When wires are connected to the wiring openings, large gaps are often left, allowing external dust and impurities to easily enter the circuit breaker housing.

[0003] When dust and other impurities enter the circuit breaker, they gradually accumulate on the surface of electrical components, affecting heat dissipation, causing component temperatures to rise, and ultimately reducing component lifespan. Furthermore, conductive particles in the dust can trigger electrical short circuits and other faults, seriously threatening the safe and stable operation of the power system. Therefore, developing a circuit breaker housing that can effectively prevent dust ingress is of significant practical importance. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present invention provides a dustproof circuit breaker housing.

[0005] The technical solution adopted by this utility model is: a dustproof circuit breaker housing, including an upper housing, a lower housing covering the upper housing, wiring openings provided on the sides of the upper housing and the lower housing, and wiring terminals provided in the wiring openings. The wiring terminals are threaded with pre-tightening bolts in the screw holes. It also includes a hinged sealing plate and a dustproof component. The dustproof component includes a pressure plate, a connecting plate, a silicone pad, and a memory foam block.

[0006] The pressure plate is rotatably connected to the pre-tightening bolt, and the pressure plate is provided with a "T" shaped groove;

[0007] The connecting plate is provided with a "T"-shaped slider that slides in conjunction with the "T"-shaped groove;

[0008] The silicone pad is connected to the connecting plate and memory foam block through a microporous interlocking structure and adhesive.

[0009] The hinged sealing plate is rotatably connected to the upper and lower housings via a rotating shaft.

[0010] Furthermore, the inner wall of the "T"-shaped groove is coated with a self-lubricating coating.

[0011] Furthermore, the self-lubricating coating is a composite coating of polytetrafluoroethylene (PTFE) and molybdenum disulfide, with a thickness of 0.1mm-0.15mm.

[0012] Furthermore, the microporous interlocking structure includes conical protrusions on the upper and lower surfaces of the silicone pad and conical holes on the surfaces of the connecting plate and the memory foam block, wherein the conical holes are fitted into the conical protrusions.

[0013] Furthermore, the bottom of the hinged sealing plate cover has a slot for the wire to pass through.

[0014] Furthermore, the head of the pre-tightening bolt is provided with a rotating head with a "T" shaped cross section, and the pressure plate is provided with a "T" shaped hole that rotatably engages with the rotating head.

[0015] The beneficial effects of this utility model are:

[0016] Firstly, regarding dust protection, dustproof components and hinged sealing plates are incorporated. After wiring is completed, the hinged sealing plates and memory foam blocks can be used to tightly seal the wiring openings. Compared to traditional enclosures, this significantly reduces the channels through which dust can enter the circuit breaker's interior, effectively blocking external dust and impurities from intruding and ensuring that internal electrical components are always in a clean environment, thereby significantly improving the circuit breaker's dustproof performance.

[0017] Secondly, from a sealing perspective, the memory foam block, after being pressed onto the wire, can conform to and wrap around the shape of the wire. Its unique material properties allow it to tightly surround the wire, further enhancing the sealing of the wiring opening and preventing dust from entering due to poor sealing. This is an effect that traditional circuit breaker housings cannot achieve.

[0018] Furthermore, the connecting plate slides with the T-shaped groove on the pressure plate via a T-shaped slider, which allows the dustproof component to be easily removed and replaced.

[0019] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram showing the hinged end plate removed to conceal the hinge.

[0022] Figure 3 This is a schematic diagram showing the separation of the wiring terminal and the silicone pad.

[0023] Figure 4This is a cross-sectional schematic diagram of the wiring terminals and the connecting plate.

[0024] Figure 1-4 In the middle: 1. Upper shell; 2. Lower shell; 3. Wiring opening; 4. Wiring terminal; 5. Preload bolt; 6. Hinge sealing plate; 7. Pressure plate; 8. Connecting plate; 9. Silicone pad; 10. Memory foam block; 11. "T" shaped slide; 12. "T" shaped slider; 13. Rotating shaft; 14. Conical protrusion; 15. Groove; 16. Wire; 17. Rotating head; 18. "T" shaped hole; 19. Conical hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0027] This utility model provides a dustproof circuit breaker housing.

[0028] In this embodiment, refer to Figure 1-4 The dustproof circuit breaker housing includes an upper housing 1, a lower housing 2 covering the upper housing 1, wiring openings 3 on the sides of the upper housing 1 and the lower housing 2, and wiring terminals 4 in the wiring openings 3. The wiring terminals 4 are threaded with pre-tightening bolts 5 in the screw holes. It also includes a hinged sealing plate 6 and a dustproof assembly. The dustproof assembly includes a pressure plate 7, a connecting plate 8, a silicone pad 9, and a memory foam block 10.

[0029] The pressure plate is rotatably connected to the pre-tightening bolt, and the pressure plate is provided with a "T" shaped groove 11;

[0030] The connecting plate is provided with a "T"-shaped slider 12 that slides in conjunction with the "T"-shaped groove 11;

[0031] The silicone pad is connected to the connecting plate and memory foam block through a microporous interlocking structure and adhesive.

[0032] The hinged sealing plate is rotatably connected to the upper and lower housings via a rotating shaft 13.

[0033] The above technical solution fundamentally solves the problem of dust easily entering the wiring opening of traditional circuit breaker housings by adding a hinged sealing plate and dustproof components. In practical use, the wire is pressed between the terminal block and the dustproof component. By tightening the preload bolt, the wire 16 is pressed firmly onto the terminal block. Memory foam effectively wraps and seals the space around the wire edges, ensuring a tight seal. Finally, the hinged sealing plate is lowered to cover the wiring opening, further ensuring the dustproof effect. This solution enhances sealing, effectively prevents dust from entering, and comprehensively improves the dustproof performance of the circuit breaker housing.

[0034] Specifically, the inner wall of the "T"-shaped groove is coated with a self-lubricating coating.

[0035] In this embodiment, the design of the inner wall of the "T"-shaped slide groove being coated with a self-lubricating coating can reduce the frictional resistance between the slider and the slide groove, making the operation smoother and less strenuous when installing or adjusting the dustproof components.

[0036] Specifically, the self-lubricating coating is a composite coating of polytetrafluoroethylene (PTFE) and molybdenum disulfide, with a thickness of 0.1mm-0.15mm.

[0037] In this embodiment, the combination of polytetrafluoroethylene (PTFE) and molybdenum disulfide combines the excellent lubrication properties of both, and performs better in reducing the coefficient of friction.

[0038] Specifically, the microporous interlocking structure includes conical protrusions 14 on the upper and lower surfaces of the silicone pad and conical holes 19 on the surfaces of the connecting plate and the memory foam block, wherein the conical holes 19 are fitted into the conical protrusions 14.

[0039] In this embodiment, tapered protrusions are provided on the upper and lower surfaces of the silicone pad, and tapered holes are provided on the surfaces of the connecting plate and the memory foam block to fit into them, which greatly enhances the connection stability between the silicone pad and the connecting plate and the memory foam block. Compared with simple adhesive connection, this interlocking structure provides additional mechanical locking force, making it difficult for the silicone pad to separate from other components even under vibration, external pulling force, etc. during long-term use.

[0040] Specifically, the bottom of the hinged sealing plate cover has a slot 15 for the wire to pass through.

[0041] In this embodiment, the design fully considers the actual usage scenario. The slot design allows the wires to pass through smoothly without allowing dust to easily enter due to an excessively large opening.

[0042] Specifically, the head of the pre-tightening bolt is provided with a rotating head 17 with a "T" shaped cross section, and the pressure plate is provided with a "T" shaped hole 18 that rotates with the rotating head.

[0043] The rotating structure in this embodiment is simple and low in cost.

[0044] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A dustproof circuit breaker housing comprising an upper housing, a lower housing which is closed on the upper housing, a wiring opening which is provided on the side surface of the upper housing and the lower housing, and a wiring terminal which is provided in the wiring opening, and a pre-tightening bolt which is threadedly connected to a threaded hole of the wiring terminal, characterized in that: The hinge sealing plate and the dustproof assembly are also included, the dustproof assembly includes a pressing plate, a connecting plate, a silica gel pad and a memory foam block; ​ The pressing plate is in rotational connection with the pre-tightening bolt, and a "T"-shaped sliding groove is arranged on the pressing plate; A "T"-shaped sliding block is arranged on the connecting plate and is in sliding cooperation with the "T"-shaped sliding groove; The silica gel pad is connected with the connecting plate and the memory foam block through a microporous interlocking structure and adhesive. The hinge sealing plate is in rotational connection with the upper shell and the lower shell through a rotating shaft.

2. The dust-protected circuit breaker housing according to claim 1, characterized in that: The inner wall of the "T"-shaped sliding groove is coated with a self-lubricating coating.

3. The dust-protected circuit breaker housing according to claim 1, characterized in that: The microporous interlocking structure includes a tapered protrusion on the upper and lower surfaces of the silica gel pad and a tapered hole on the surface of the connecting plate and the memory foam block, and the tapered hole is embedded with the tapered protrusion.

4. The dust-protected circuit breaker housing of claim 1, wherein: A slot is left at the bottom of the hinge sealing plate cover for the wire to pass out.

5. The dust-protected circuit breaker housing of claim 1, wherein: The head of the pre-tightening bolt is provided with a "T"-shaped rotating head, and the pressing plate is provided with a "T"-shaped hole in rotational cooperation with the rotating head.

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