Electronic molded case circuit breaker

Abstract

The utility model discloses an electronic molded case circuit breaker, which belongs to the field of molded case circuit breakers, and comprises a circuit breaker body, a protective shell arranged at the switching position of the circuit breaker body and guide rails symmetrically arranged at the opening end of the protective shell, a through opening matched with the protection plate is formed in the bottom end of the protection shell. The electronic molded case circuit breaker is simple in structure and convenient to use, a switch of the circuit breaker body can be effectively protected from being influenced by the external environment through the design of the rotating shaft, the torsional spring, the protective shell and the protective plate, the normal use state of the circuit breaker body is ensured, the reliability and safety of equipment are improved, and when tripping occurs, the switch trips to trigger a series of mechanisms, so that the service life of the circuit breaker is prolonged. The protection plate can be quickly opened, so that a worker can directly operate the circuit breaker body and quickly find and process a tripping problem, thereby shortening the time for recovering power supply and improving the availability of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of molded case circuit breakers, in particular to an electronic molded case circuit breaker. Background Art

[0002] The electronic molded case circuit breaker is a device used for circuit protection, which combines the advantages of traditional thermal magnetic circuit breakers and electronic technology. Compared with traditional thermal magnetic circuit breakers, it has higher accuracy, faster response speed and more functional characteristics.

[0003] Upon investigation, it was found that the Chinese utility model patent with publication number CN215869198U discloses an electronic molded case circuit breaker, which can protect the switch by setting a protective structure to prevent it from being directly exposed to the outside, thereby ensuring the service life of the electronic molded case circuit breaker body while reducing safety hazards and having higher safety; however, tripping may occur during the use of the electronic molded case circuit breaker. In some places where electricity is urgently needed, the staff needs to restore the power supply immediately after the tripping occurs. At this time, the staff needs to operate the circuit breaker, and the protective structure on the circuit breaker needs to be opened by the staff before the circuit breaker can be operated, but the restoration of power will be affected in a dark environment or when the staff is not familiar with the protective structure.

[0004] Therefore, the utility model provides an electronic molded case circuit breaker to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model provides an electronic molded case circuit breaker, aiming to solve the problems of inconvenient operation of the existing molded case circuit breaker mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above object, the utility model provides the following technical solution: an electronic molded case circuit breaker, comprising a circuit breaker body, a protective shell arranged at a switch position of the circuit breaker body, and a guide rail symmetrically arranged at an open end of the protective shell, a protective plate slidably installed in the guide rail, and a through opening adapted to the protective plate is opened at the bottom end of the protective shell;

[0009] The protective plate is located in the protective shell and has a fixing bar adapted to the guide rail fixedly installed at one end thereof, a rotating shaft is rotatably installed in the protective shell, a rotating plate is mounted on the rotating shaft, a push bar is fixedly installed at one end of the rotating plate, a fixing sleeve is fixedly installed at the end of the rotating plate away from the push bar, a limiting mechanism adapted to the push bar is symmetrically arranged on the fixing bar, a support rod adapted to the limiting mechanism is fixedly installed at one end of the guide rail away from the through opening, and a stop bar is fixedly installed at one end of the protective plate located outside the protective shell.

[0010] Preferably, the limiting mechanism comprises a slot provided at the end of the fixing strip, a limiting head slidably mounted in the slot, and a spring fixedly mounted between the limiting head and the slot.

[0011] Preferably, one end of the limit head away from the slot and one end of the push bar away from the rotating plate are both arranged in an arc shape.

[0012] Preferably, a sliding rod is slidably installed in the fixed sleeve.

[0013] Preferably, one end of the rotating shaft passes through the protective shell, and a rotating handle is fixedly installed on the end of the rotating shaft away from the rotating plate. A torsion spring is mounted on the rotating shaft, and both ends of the torsion spring are fixedly connected to the rotating shaft and the protective shell respectively.

[0014] Preferably, a limiting rod adapted to the rotating plate is fixedly installed in the protective shell.

[0015] (III) Beneficial effects

[0016] The electronic molded case circuit breaker has a simple structure and is easy to use. By setting the rotating shaft and torsion spring, the design of the protective case and the protective plate can effectively protect the switch of the circuit breaker body from the influence of the external environment, ensure its normal use state, and improve the reliability and safety of the equipment. When a trip occurs, the switch tripping will trigger a series of mechanisms, so that the protective plate can be quickly opened, which is convenient for the staff to directly operate the circuit breaker body and quickly find and deal with the tripping problem, thereby shortening the time to restore power supply and improving the availability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the electronic molded case circuit breaker;

[0018] Figure 2 It is a schematic diagram of the overall multi-angle structure of the electronic molded case circuit breaker;

[0019] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0020] Figure 4This is a schematic diagram of the exploded structure of the fixing bar of the electronic molded case circuit breaker.

[0021] In the figure: 1. circuit breaker body; 2. protective shell; 21. guide rail; 211. support rod; 22. through port; 23. limit rod; 3. protective plate; 31. fixing bar; 32. limiting mechanism; 321. slot; 322. limiting head; 323. spring; 33. stop bar; 4. rotating shaft; 41. rotating plate; 42. push bar; 43. fixing sleeve; 431. sliding rod; 44. rotating handle; 45. torsion spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The utility model provides an electronic molded case circuit breaker, such as Figure 1-4 As shown, the molded case circuit breaker comprises a circuit breaker body 1, a protective shell 2 arranged at the switch position of the circuit breaker body 1, and a guide rail 21 symmetrically arranged at the open end of the protective shell 2, a protective plate 3 is slidably installed in the guide rail 21, and a through opening 22 adapted to the protective plate 3 is opened at the bottom end of the protective shell 2;

[0024] A fixing bar 31 adapted to the guide rail 21 is fixedly installed at one end of the protective plate 3 located in the protective shell 2, a rotating shaft 4 is rotatably installed in the protective shell 2, a rotating plate 41 is mounted on the rotating shaft 4, a push bar 42 is fixedly installed at one end of the rotating plate 41, a fixing sleeve 43 is fixedly installed at one end of the rotating plate 41 away from the push bar 42, a limiting mechanism 32 adapted to the push bar 42 is symmetrically arranged on the fixing bar 31, a support rod 211 adapted to the limiting mechanism 32 is fixedly installed at one end of the guide rail 21 away from the through opening 22, and a stop bar 33 is fixedly installed at one end of the protective plate 3 located outside the protective shell 2.

[0025] When in use, in the initial state, the protective plate 3 is located at the open end of the protective shell 2, and the cooperation of the limiting mechanism 32 and the support rod 211 fixes the protective plate 3. At this time, the circuit breaker body 1 is in a normal use state. The protective shell 2 and the protective plate 3 can prevent the switch on the circuit breaker body 1 from being affected by the external environment. If tripping occurs, the switch jumps down to squeeze the fixed sleeve 43. After being squeezed, the fixed sleeve 43 can drive the rotating plate 41 to rotate along the rotating shaft 4, thereby squeezing the limiting mechanism 32 through the push bar 42, so that the limiting mechanism 32 is separated from the support rod 211. At this time, under the action of gravity, the protective plate 3 can slide along the guide rail 21 to expose the opening of the protective shell 2, which is convenient for the staff to directly operate the switch on the circuit breaker body 1, and the opening of the protective plate 3 can also enable the staff to quickly find the tripped circuit breaker.

[0026] Specifically, the limiting mechanism 32 includes a slot 321 provided at the end of the fixing strip 31, a limiting head 322 slidably installed in the slot 321, and a spring 323 fixedly installed between the limiting head 322 and the slot 321; under the support of the spring 323, the limiting head 322 can contact the support rod 211 to achieve the limitation of the protective plate 3, and when the push strip 42 pushes the limiting head 322, the limiting head 322 can enter the slot 321 and separate from the support rod 211, thereby releasing the limitation of the protective plate 3.

[0027] More specifically, one end of the limit head 322 away from the slot 321 and one end of the push bar 42 away from the rotating plate 41 are both arranged in an arc shape; the arc-shaped arrangement of the limit head 322 and the push bar 42 ensures that the two can move when they are in contact.

[0028] Furthermore, a slide bar 431 is slidably installed in the fixed sleeve 43 ; the slide bar 431 is located in the fixed sleeve 43 and slides to change the overall length of the fixed sleeve 43 and the slide bar 431 , so as to facilitate the operation of the rotating plate 41 .

[0029] Furthermore, one end of the rotating shaft 4 passes through the protective shell 2, and a rotating handle 44 is fixedly installed at one end of the rotating shaft 4 away from the rotating plate 41. A torsion spring 45 is mounted on the rotating shaft 4, and the two ends of the torsion spring 45 are respectively fixedly connected to the rotating shaft 4 and the protective shell 2, and a limiting rod 23 adapted to the rotating plate 41 is fixedly installed in the protective shell 2; when the circuit breaker body 1 is in normal use, the push bar 42 is in a position away from the limiting head 322 under the action of the torsion spring 45 and the limiting rod 23, ensuring that the protective plate 3 can seal the protective shell 2, and the rotation of the rotating handle 44 can drive the rotating shaft 4 and the rotating plate 41 to rotate, so that the push bar 42 pushes the limiting head 322 to release the limiting of the protective plate 3, ensuring that the protective plate 3 can also be opened when the circuit breaker body 1 is in normal use.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electronic molded case circuit breaker, comprising a circuit breaker body (1), a protective shell (2) arranged at a switch position of the circuit breaker body (1), and a guide rail (21) symmetrically arranged at an open end of the protective shell (2), a protective plate (3) being slidably mounted in the guide rail (21), a through opening (22) adapted to the protective plate (3) being provided at the bottom end of the protective shell (2), and a stop bar (33) being fixedly mounted at one end of the protective plate (3) located outside the protective shell (2); Features: A fixing strip (31) adapted to the guide rail (21) is fixedly installed at one end of the protection plate (3) located in the protection shell (2); a rotating shaft (4) is rotatably installed in the protection shell (2); a rotating plate (41) is mounted on the rotating shaft (4); a push strip (42) is fixedly installed at one end of the rotating plate (41); a fixing sleeve (43) is fixedly installed at one end of the rotating plate (41) away from the push strip (42); a limiting mechanism (32) adapted to the push strip (42) is symmetrically arranged on the fixing strip (31); and a support rod (211) adapted to the limiting mechanism (32) is fixedly installed at one end of the guide rail (21) away from the through opening (22).

2. The electronic molded case circuit breaker according to claim 1, characterized in that: The limiting mechanism (32) comprises a slot (321) provided at the end of the fixing strip (31), a limiting head (322) slidably mounted in the slot (321), and a spring (323) fixedly mounted between the limiting head (322) and the slot (321).

3. The electronic molded case circuit breaker according to claim 2, characterized in that: An end of the limiting head (322) away from the slot (321) and an end of the pushing strip (42) away from the rotating plate (41) are both arranged in an arc shape.

4. The electronic molded case circuit breaker according to claim 1, characterized in that: A sliding rod (431) is slidably mounted in the fixed sleeve (43).

5. The electronic molded case circuit breaker according to claim 1, characterized in that: One end of the rotating shaft (4) passes through the protective shell (2); a rotating handle (44) is fixedly mounted on the end of the rotating shaft (4) away from the rotating plate (41); a torsion spring (45) is sleeved on the rotating shaft (4); and two ends of the torsion spring (45) are respectively fixedly connected to the rotating shaft (4) and the protective shell (2).

6. The electronic molded case circuit breaker according to claim 1, characterized in that: A limiting rod (23) adapted to the rotating plate (41) is fixedly installed in the protective shell (2).

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