Circuit breaker with explosion-proof function

Abstract

The utility model relates to the technical field of circuit breakers, and discloses a circuit breaker with an explosion-proof function, which comprises a circuit breaker body, a wiring hole is arranged on the circuit breaker body, a protection mechanism for preventing dust from entering is arranged in the wiring hole, and the protection mechanism comprises a baffle plate. According to the circuit breaker with the explosion-proof function, after an electric wire is installed in the wiring hole, the bidirectional lead screw is rotated through the rotating block, and meanwhile, the electric wire can be clamped by the rubber block through cooperation of the connecting rod and the lantern ring; the rubber block and the wire are in interference fit, the wire is tightly wrapped, the baffle is matched with the rubber block to seal the wiring hole, dust is prevented from entering the wiring hole in the operation process of the circuit breaker body, and flash explosion of the circuit breaker body can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker with an explosion-proof function. Background Art

[0002] A circuit breaker is a switching device that can close, carry and interrupt current under normal circuit conditions and can close, carry and interrupt current under abnormal circuit conditions within a specified time.

[0003] After the wires are installed in the wiring holes of the circuit breaker, the circuit of the circuit breaker is in a conducting state. However, most circuit breakers on the market lack devices to protect the wiring holes. When the circuit breaker is used in some dusty environments, if dust enters the energized wiring holes, it may cause an arc inside the wiring holes, which may easily cause the circuit breaker to flash over, posing a safety hazard. Utility Model Content

[0004] The purpose of the utility model is to provide a circuit breaker with explosion-proof function to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a circuit breaker with explosion-proof function, comprising a circuit breaker body, a wiring hole is provided on the circuit breaker body, a protective mechanism for preventing dust from entering is provided inside the wiring hole, and dust can be prevented from entering the wiring hole by providing the protective mechanism, so that flash explosion of the circuit breaker body can be effectively avoided, and the protective mechanism comprises:

[0006] A baffle, the baffle is fixedly mounted on the inner wall of the wiring hole, a through hole is provided on the baffle, a collar is slidably connected to the outer wall of the baffle, a rubber block is fixedly mounted on the inner wall of the collar, a groove is provided on the rubber block, and the wiring hole can be sealed by arranging the baffle in conjunction with the rubber block to prevent dust from entering the interior of the wiring hole during operation of the circuit breaker body;

[0007] A bidirectional screw rod, the bidirectional screw rod is rotatably connected to the inner wall of the wiring hole, and a rotating block is fixedly installed on the outer wall of the bidirectional screw rod;

[0008] A connecting rod, one end of which is threadedly connected to the outer wall of the bidirectional screw rod, and the other end of which is fixedly mounted on the side wall of the collar.

[0009] Preferably, an auxiliary mechanism for improving dustproof effect is arranged inside the through hole, and the sealing effect of the wiring hole can be further improved by arranging the auxiliary mechanism. The auxiliary mechanism includes a slider, and the slider is slidably connected to the inner wall of the through hole. The sponge can be driven to slide by arranging the slider.

[0010] Preferably, a sponge is fixedly mounted on the side wall of the slider, and the sponge can be provided to tightly wrap the wire from the inside.

[0011] Preferably, a connecting shaft is fixedly mounted on the top of the sliding block.

[0012] Preferably, one end of the connecting shaft away from the sliding block passes through the baffle and is fixedly mounted on the bottom of the collar.

[0013] Preferably, the connecting shaft is slidably connected to the penetration point of the baffle.

[0014] Compared with the prior art, the utility model provides a circuit breaker with explosion-proof function, which has the following beneficial effects:

[0015] 1. For the explosion-proof circuit breaker, after the wire is installed inside the wiring hole, the bidirectional screw rod is rotated by the rotating block. At the same time, the rubber block can clamp the wire in cooperation with the connecting rod and the ring, so that the rubber block and the wire are interference fit and the wire is tightly wrapped. At this time, the baffle can be used to seal the wiring hole in cooperation with the rubber block to prevent dust from entering the wiring hole during the operation of the circuit breaker body, which can effectively prevent the circuit breaker body from flashing.

[0016] 2. For the explosion-proof circuit breaker, the two sets of rings are close to each other and cooperate with the connecting shaft and the slider, so that the sponge can tightly wrap the wires from the inside, which can further improve the sealing effect of the wiring hole and effectively prevent dust from entering the inside of the wiring hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall top view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the baffle of the utility model;

[0020] Figure 4 This is a schematic diagram of the explosion structure of the baffle of the utility model;

[0021] Figure 5 For this utility model Figure 2 A is an enlarged structural diagram of FIG.

[0022] In the figure: 1. circuit breaker body; 2. wiring hole; 3. protection mechanism; 31. baffle; 32. bidirectional screw rod; 33. connecting rod; 34. through hole; 35. collar; 36. rubber block; 37. groove; 38. rotating block; 4. auxiliary mechanism; 41. slider; 42. sponge; 43. connecting shaft. DETAILED DESCRIPTION

[0023] like Figure 1-Figure 5 As shown, the utility model provides a technical solution: a circuit breaker with explosion-proof function, including a circuit breaker body 1, a wiring hole 2 is opened on the circuit breaker body 1, and a protective mechanism 3 for preventing dust from entering is arranged inside the wiring hole 2. By setting the protective mechanism 3, dust can be prevented from entering the interior of the wiring hole 2, and flash explosion of the circuit breaker body 1 can be effectively avoided.

[0024] The protective mechanism 3 includes a baffle 31, a bidirectional screw rod 32, a connecting rod 33, a through hole 34, a collar 35, a rubber block 36, a groove 37, and a rotating block 38; the baffle 31 is fixedly installed on the inner wall of the wiring hole 2, and the baffle 31 and the rubber block 36 can be used to seal the wiring hole 2 to prevent dust from entering the wiring hole 2 during the operation of the circuit breaker body 1. The baffle 31 is provided with a through hole 34, and the wire can be inserted into the wiring hole 2 through the through hole 34, so that the wire can be connected to the wiring hole 2. The outer wall of the baffle 31 is slidably connected with a collar 35, and the inner wall of the collar 35 is fixedly installed with a rubber block 36, and the rubber block 36 is provided with The groove 37 is used to bring the two groups of rings 35 closer to each other, and the two groups of rubber blocks 36 are used to cooperate with the groove 37 to clamp the wires, so that the rubber blocks 36 and the wires are interference fit and tightly wrap the wires. The bidirectional screw rod 32 is rotatably connected to the inner wall of the wiring hole 2, and a rotating block 38 is fixedly installed on the outer wall of the bidirectional screw rod 32. One end of the connecting rod 33 is threadedly connected to the outer wall of the bidirectional screw rod 32, and the other end of the connecting rod 33 is fixedly installed on the side wall of the ring 35. The bidirectional screw rod 32 is rotated by the rotating block 38, and the two groups of connecting rods 33 threadedly connected to the bidirectional screw rod 32 can drive the two groups of rings 35 to slide synchronously in opposite directions through the rotation of the bidirectional screw rod 32.

[0025] The interior of the through hole 34 is provided with an auxiliary mechanism 4 for improving the dustproof effect. By providing the auxiliary mechanism 4, the sealing effect of the wiring hole 2 can be further improved. The auxiliary mechanism 4 includes a slider 41, a sponge 42, and a connecting shaft 43; the slider 41 is slidably connected to the inner wall of the through hole 34, and the two groups of sliders 41 can drive the two groups of sponges 42 to approach each other, so that the sponges 42 are deformed and tightly fit on the outer wall of the wire. The side wall of the slider 41 is fixedly installed with a sponge 42, and the wire is tightly wrapped from the inside by the two groups of sponges 42, which can further improve the sealing effect of the wiring hole 2 and effectively prevent dust from entering the interior of the wiring hole 2. A connecting shaft 43 is fixedly installed on the top of the slider 41, and the end of the connecting shaft 43 away from the slider 41 passes through the baffle 31 and is fixedly installed at the bottom of the ring 35. The connecting shaft 43 is slidably connected to the penetration of the baffle 31. When the two groups of rings 35 approach each other, the two groups of sliders 41 can be driven to slide synchronously and approach each other in cooperation with the connecting shaft 43.

[0026] Working principle: The wire can be inserted into the wiring hole 2 through the through hole 34. When the wire is installed, the bidirectional screw rod 32 is rotated by the rotating block 38. The two sets of connecting rods 33 threadedly connected with the bidirectional screw rod 32 can drive the two sets of rings 35 to slide synchronously in opposite directions, and make the two sets of rings 35 approach each other, so that the rubber blocks 36 on the inner walls of the two sets of rings 35 clamp the wire, so that the rubber blocks 36 and the wire have an interference fit and wrap the wire tightly. At this time, the baffle 31 cooperates with the rubber block 36 to seal the wiring hole 2, so as to prevent dust from entering the wiring hole 2 during the operation of the circuit breaker body 1, and effectively prevent the circuit breaker body 1 from flashing.

[0027] When the two sets of rings 35 are close to each other, the connecting shaft 43 can drive the two sets of sliders 41 to slide synchronously and approach each other. At this time, the two sets of sliders 41 will drive the two sets of sponges 42 to approach each other, causing the sponges 42 to deform and fit tightly to the outer wall of the wire. The two sets of sponges 42 can wrap the wire tightly from the inside, which can further improve the sealing effect of the wiring hole 2 and effectively prevent dust from entering the interior of the wiring hole 2.

[0028] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A circuit breaker with explosion-proof function, comprising a circuit breaker body (1), wherein the circuit breaker body (1) is provided with a wiring hole (2), characterized in that: A protection mechanism (3) for preventing dust from entering is arranged inside the wiring hole (2), and the protection mechanism (3) comprises: a baffle (31), the baffle (31) being fixedly mounted on the inner wall of the wiring hole (2), the baffle (31) being provided with a through hole (34), the outer wall of the baffle (31) being slidably connected with a collar (35), the inner wall of the collar (35) being fixedly mounted with a rubber block (36), the rubber block (36) being provided with a groove (37); A bidirectional screw rod (32), the bidirectional screw rod (32) being rotatably connected to the inner wall of the wiring hole (2), and a rotating block (38) being fixedly mounted on the outer wall of the bidirectional screw rod (32); A connecting rod (33), one end of which is threadedly connected to the outer wall of the bidirectional screw rod (32), and the other end of which is fixedly mounted on the side wall of the collar (35).

2. A circuit breaker with explosion-proof function according to claim 1, characterized in that: An auxiliary mechanism (4) for improving dustproof effect is arranged inside the through hole (34); the auxiliary mechanism (4) comprises a slider (41); and the slider (41) is slidably connected to the inner wall of the through hole (34).

3. A circuit breaker with explosion-proof function according to claim 2, characterized in that: A sponge (42) is fixedly mounted on the side wall of the sliding block (41).

4. The circuit breaker with explosion-proof function according to claim 2, characterized in that: A connecting shaft (43) is fixedly mounted on the top of the sliding block (41).

5. The circuit breaker with explosion-proof function according to claim 4, characterized in that: One end of the connecting shaft (43) away from the sliding block (41) passes through the baffle (31) and is fixedly mounted on the bottom of the collar (35).

6. The circuit breaker with explosion-proof function according to claim 5, characterized in that: The connecting shaft (43) is slidably connected to the penetration point of the baffle (31).

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