Low-voltage circuit breaker with protection function

Abstract

The utility model discloses a low-voltage circuit breaker with a protection function, which belongs to the technical field of circuit breakers and comprises a protection shell and a circuit breaker body, a cavity is arranged in the protection shell, the circuit breaker body is rotatably mounted in the cavity, a protection cover is slidably arranged in the protection shell, and the circuit breaker body is rotatably mounted in the cavity. After wiring of the circuit breaker body is completed, the circuit breaker body is manually rotated and stored in the cavity, at the moment, the circuit breaker wrench is located in the cavity, the front face of the circuit breaker wrench is opposite to the side wall of the cavity, the problem of mistaken touch possibly caused by exposure of the circuit breaker wrench is effectively solved, and furthermore, in the rotating and storing process, through cooperation of a first bevel gear and a second bevel gear, the circuit breaker wrench can be rotated and stored conveniently. The two push rods and the protective cover are synchronously driven to slide, the protective cover slides out of the protective shell, and the protective cover shields the upper portion of the circuit breaker body, so that the protective performance is enhanced, the hidden danger of dust accumulation and rainwater dripping can be solved, and the protective effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of circuit breaker, specifically for a low voltage circuit breaker with protection function. BACKGROUND

[0002] At present, the circuit breaker refers to the switch device that can close, carry and open the current under normal loop condition and can close, carry and open the current under abnormal loop condition. The circuit breaker is divided into high voltage circuit breaker and low voltage circuit breaker according to its use range, and the high-low voltage boundary is relatively fuzzy, and generally, the above 3kV is called high voltage electrical apparatus.

[0003] Such as the patent with the announcement number CN110767509A, specifically discloses a low voltage circuit breaker, including circuit breaker body, the circuit breaker body is provided with circuit breaker wrench 50, the circuit breaker body upper end is circuit breaker incoming line end, the circuit breaker body lower end is circuit breaker outgoing line end 54, its structural key points circuit breaker body is provided with the opening and closing operation interlock mechanism;The opening and closing operation interlock mechanism includes circuit breaker interlock mounting plate 10, circuit breaker interlock mounting plate 10 is connected with the front end surface of circuit breaker body, circuit breaker interlock mounting plate 10 is provided with the linkage component of circuit breaker wrench, the linkage component outside is provided with circuit breaker interlock baffle 11;

[0004] In the above disclosed patent, after the installation of the circuit breaker, the circuit breaker wrench is located in the front and lacks effective protection measures, which increases the risk of accidental touch of the operator, and the structure for preventing misoperation is not provided, and secondly, the corresponding protection structure is not designed, which will cause dust and water to directly contact the circuit breaker, and long-term accumulation will affect the performance and service life of the circuit breaker, and reduce its use reliability.

[0005] It should be noted that the above information disclosed in the background art section of the present application is only used to understand the background art of the present application, and therefore, it can contain information that does not constitute prior art. SUMMARY

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is to provide a low voltage circuit breaker with protection function, which solves the problems of easy accidental touch and lack of protection structure in the related art.

[0007] In order to solve the above technical problems, the technical scheme of the utility model is: a low voltage circuit breaker with protection function, comprising a protection shell and a circuit breaker body, a cavity is formed in the interior of the protection shell, and the circuit breaker body is rotatably installed in the interior of the cavity.

[0008] The inside of the protective shell is slidably provided with a protective cover, two symmetrically arranged push rods are fixedly connected to the protective cover, a supporting rod is fixedly arranged on each of the two push rods, the supporting rods are rotatably installed in the inside of the circuit breaker body, a transmission rod is rotatably installed in the inside of the protective shell, and the two ends of the transmission rod are respectively sleeved with a synchronous belt through synchronous wheels with the two supporting rods.

[0009] Further, a second rotating rod is fixedly nested at the top of the circuit breaker body, a first rotating rod is fixedly nested at the bottom of the circuit breaker body, a cavity is formed in the inside of the protective shell, the cavity and the circuit breaker body are the same in shape and size, and the first rotating rod and the second rotating rod are rotatably installed in the inside of the cavity.

[0010] Further, a ratchet is fixedly sleeved on the outer circumferential surface of the first rotating rod, a pawl is movably arranged in the inside of the cavity, and a return spring is connected between one side of the pawl and the side wall of the cavity.

[0011] Further, a first bevel gear is fixedly sleeved on the outer circumferential surface of the transmission rod, a second bevel gear is fixedly sleeved on the outer circumferential surface of the second rotating rod, and the first bevel gear is meshingly connected with the second bevel gear.

[0012] Further, a sliding groove is formed in the inside of the protective shell, the protective cover is slidably connected in the inside of the sliding groove, and the first bevel gear, the second bevel gear and the two push rods are located in the inside of the sliding groove.

[0013] Further, a groove is formed in one side of the protective shell, the groove is communicated with the cavity, and the groove is located at one side of the first rotating rod and the second rotating rod.

[0014] The beneficial effects of the present application are that after the circuit breaker body is wired, it is manually rotated and stored in the inside of the cavity, at this time, the circuit breaker wrench is located in the cavity, and the front surface is opposite to the side wall of the cavity, thereby effectively avoiding the problem of accidental touch caused by the exposure of the circuit breaker wrench, and further, in the process of rotating and storing, the first bevel gear and the second bevel gear are matched to synchronously drive the two push rods and the protective cover to slide, the protective cover slides out of the protective shell, and the protective cover is shielded above the circuit breaker body, thereby enhancing the protection performance, solving the hidden dangers of dust accumulation and rainwater dripping, and improving the protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0016] Fig. 1 It is a schematic diagram of the overall structure of the present application.

[0017] Fig. 2 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0018] Fig. 3 This is a schematic diagram of the circuit breaker body structure of this utility model;

[0019] Fig. 4 This is a partial cross-sectional view of the protective shell of this utility model;

[0020] Fig. 5 This is a schematic diagram of the transmission structure of the protective cover of this utility model;

[0021] Fig. 6 This is a schematic diagram of the ratchet structure of this utility model.

[0022] In the diagram: 1. Protective housing; 2. Circuit breaker body; 3. Protective cover; 4. Synchronous belt; 5. First rotating rod; 6. Transmission rod; 7. Push rod; 8. First bevel gear; 9. Second bevel gear; 10. Second rotating rod; 11. Support rod; 12. Slide groove; 13. Cavity; 14. Return spring; 15. Ratchet; 16. Pawl. Detailed Implementation

[0023] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] like Figs. 1-6 As shown, this application provides a low-voltage circuit breaker with protective function, including a protective housing 1 and a circuit breaker body 2. The protective housing 1 has a cavity 13 inside, and the circuit breaker body 2 is rotatably installed inside the cavity 13. A protective cover 3 is slidably installed inside the protective housing 1. Two symmetrically arranged push rods 7 are fixedly connected to the protective cover 3. Each push rod 7 is fixedly provided with a support rod 11. The support rod 11 is rotatably installed inside the circuit breaker body 2. A transmission rod 6 is rotatably installed inside the protective housing 1. The two ends of the transmission rod 6 are respectively connected to the two support rods 11 through a synchronous pulley set and a synchronous belt 4.

[0025] like Figs. 1-6 As shown, a second rotating rod 10 is fixedly nested at the top of the circuit breaker body 2, and a first rotating rod 5 is fixedly nested at the bottom of the circuit breaker body 2. A cavity 13 is opened inside the protective housing 1. The cavity 13 has the same shape and size as the circuit breaker body 2. The first rotating rod 5 and the second rotating rod 10 are both rotatably installed inside the cavity 13.

[0026] like Figs. 1-6As shown, the outer periphery of the first rotating rod 5 is fixedly sleeved with a ratchet wheel 15, the inside of the cavity 13 is movably provided with a pawl 16, one side of the pawl 16 is connected with the side wall of the cavity 13 through a reset spring 14, the outer periphery of the transmission rod 6 is fixedly sleeved with a first bevel gear 8, the outer periphery of the second rotating rod 10 is fixedly sleeved with a second bevel gear 9, the first bevel gear 8 is meshingly connected with the second bevel gear 9, the inside of the protective shell 1 is provided with a sliding groove 12, the protective cover 3 is slidingly connected in the inside of the sliding groove 12, the first bevel gear, the second bevel gear 9 and the two push rods 7 are all located in the inside of the sliding groove 12, one side of the protective shell 1 is provided with a recess, the recess is communicated with the cavity 13, and the recess is located at one side of the first rotating rod 5 and the second rotating rod 10.

[0027] The working principle of the utility model is as follows: the device is composed of a circuit breaker body 2 and a protective shell 1, during installation, the protective shell 1 is first fixed at a specified position, then the circuit breaker body 2 is rotated to open for wiring operation, the opening angle can be confirmed according to actual conditions, after wiring and debugging are completed, the circuit breaker body 2 is rotated and completely accommodated in the cavity 13 in the inside of the protective shell 1 with the first rotating rod 5 and the second rotating rod 10 as the shaft, at this time, the front surface of the circuit breaker body 2 is opposite to the side wall of the cavity 13, through the above operation, the circuit breaker wrench is ensured not to be directly exposed, the risk of accidental touch by unauthorized personnel is effectively avoided, and the safety protection performance of the equipment is enhanced.

[0028] Further, when the circuit breaker body 2 is rotated together with the second rotating rod 10, the second bevel gear 9 fixedly installed on the outer periphery of the second rotating rod 10 drives the first bevel gear 8 and the transmission rod 6 meshing therewith to rotate, the two ends of the transmission rod 6 are connected with the two synchronous belts 4 through synchronous wheel sets, thereby driving the supporting rod 11 to synchronously rotate, the other end of the supporting rod 11 is fixedly connected with the push rod 7 slidingly arranged in the protective shell 1, therefore, the rotation of the supporting rod 11 drives the push rod 7 to swing in an arc shape, the two push rods 7 simultaneously act, the protective cover 3 is pushed out of the protective shell 1 and located directly above the circuit breaker body 2, the protective cover 3 is designed in an arc shape, which can effectively shield dust and protect rainwater or splashed water drops, when the circuit breaker body 2 needs to be rotated to open, the protective cover 3 also slides and is accommodated back into the inside of the protective shell 1.

[0029] In addition, in order to enhance the stability of the circuit breaker body 2 during wiring operation, a ratchet wheel 15 is fixedly arranged on the outer circumferential surface of the first rotating rod 5, when the circuit breaker body 2 is rotated to be opened, the teeth on the ratchet wheel 15 will push the ratchet pawl 16 movably arranged in the cavity 13 to rotate, thereby smoothly rotating the circuit breaker body 2 out of the inside of the protective shell 1, at this time, the ratchet pawl 16 will be clamped between the teeth of the ratchet wheel 15, forming a limiting action, after the wiring operation is completed, the ratchet pawl 16 needs to be manually pushed away, the ratchet pawl 16 is fixedly connected with a pull rod, the pull rod extends out of the outside of the protective shell 1, the circuit breaker body 2 will lose the limiting action, thereby being able to be smoothly stored in the inside of the protective shell 1 again, then the pull rod is loosened, the ratchet pawl 16 is reset under the action of the reset spring 14.

[0030] The above-described specific embodiments further specifically describe the technical problems, technical solutions and beneficial effects solved by the utility model, and it should be understood that the above-described specific embodiments are merely specific embodiments of the utility model and are not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A low voltage circuit breaker with a protection function, characterized in that, Including protective shell (1) and circuit breaker body (2), the inside of the protective shell (1) is provided with a cavity (13), the circuit breaker body (2) is rotatably installed in the inside of the cavity (13); The inside of the protective shell (1) is slidably provided with a protective cover (3), the protective cover (3) is fixedly connected with two symmetrically arranged push rods (7), the two push rods (7) are both fixedly provided with a support rod (11), the support rod (11) is rotatably installed in the inside of the circuit breaker body (2), the inside of the protective shell (1) is rotatably installed with a transmission rod (6), the two ends of the transmission rod (6) are respectively connected with two support rods (11) through a synchronous belt (4) sleeved with synchronous wheels.

2. The low voltage circuit breaker with protection function according to claim 1, characterized in that: The top of the circuit breaker body (2) is fixedly nested with a second rotating rod (10), the bottom of the circuit breaker body (2) is fixedly nested with a first rotating rod (5), the inside of the protective shell (1) is provided with a cavity (13), the cavity (13) and the circuit breaker body (2) are same in shape and size, the first rotating rod (5) and the second rotating rod (10) are both rotatably installed in the inside of the cavity (13).

3. The low voltage circuit breaker with protection function according to claim 2, characterized in that: The outer circumferential surface of the first rotating rod (5) is fixedly sleeved with a ratchet wheel (15), the inside of the cavity (13) is movably provided with a pawl (16), one side of the pawl (16) and the side wall of the cavity (13) are connected with a return spring (14).

4. The low voltage circuit breaker with protection function according to claim 3, characterized in that: The outer circumferential surface of the transmission rod (6) is fixedly sleeved with a first bevel gear (8), the outer circumferential surface of the second rotating rod (10) is fixedly sleeved with a second bevel gear (9), the first bevel gear (8) and the second bevel gear (9) are meshingly connected.

5. The low voltage circuit breaker with protection function according to claim 4, characterized in that: The inside of the protective shell (1) is provided with a sliding groove (12), the protective cover (3) is slidably connected in the inside of the sliding groove (12), the first bevel gear, the second bevel gear (9) and the two push rods (7) are all located in the inside of the sliding groove (12).

6. The low voltage circuit breaker with protection function according to claim 5, characterized in that: One side of the protective shell (1) is provided with a groove, the groove is communicated with the cavity (13), the groove is located at one side of the first rotating rod (5) and the second rotating rod (10).

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