Protective device for circuit breaker

Abstract

The utility model discloses a protective device for a circuit breaker, which mainly comprises the circuit breaker and a protective mechanism, and the circuit breaker is fixedly arranged in the protective mechanism. The protection mechanism comprises a back plate fixedly connected with the circuit breaker, a mounting plate fixedly connected with the back side of the back plate, four side plates rotationally connected with the periphery of the back plate, a front plate connected with the four side plates, and a connecting assembly used for fixedly connecting the front plate and the side plates together. According to the utility model, the circuit breaker can be unfolded when the circuit breaker is repaired and maintained by an operator, so that the circuit breaker can be repaired and maintained by the operator conveniently, the front plate and the side plates can be fixedly connected together quickly by arranging the connecting assembly, and the circuit breaker is convenient to disassemble and convenient to use. Therefore, the circuit breaker can be repaired and maintained by opening the side plates in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a protective device for circuit breakers. Background Art

[0002] A circuit breaker is a switch device that can close, carry and disconnect current under normal circuit conditions and close, carry and disconnect current under abnormal circuit conditions within a specified time. When a circuit breaker is in use, it needs to be protected by a protective device.

[0003] The existing protective device of the circuit breaker is generally a shell, and a locking door is installed on the front side of the shell to facilitate the switching of the circuit breaker. However, due to the small internal space of the shell, when the circuit breaker needs to be repaired and maintained, the operator cannot move freely and needs to disassemble and remove the circuit breaker, which is cumbersome and inconvenient for the maintenance of the circuit breaker. Therefore, a protective device for the circuit breaker is urgently needed to solve the above technical problems. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] In view of the problems existing in the protective device of the above-mentioned existing circuit breaker, the present utility model is proposed.

[0006] Therefore, the technical problem to be solved by the utility model is to provide a protective device for a circuit breaker, the purpose of which is to solve the problem that the internal space of the protective device of the existing circuit breaker is small and it is inconvenient to repair and maintain the circuit breaker.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a protective device for a circuit breaker, which mainly includes a circuit breaker and a protective mechanism, wherein the circuit breaker is fixedly installed inside the protective mechanism, and the protective mechanism includes a back plate fixedly connected to the circuit breaker, a mounting plate fixedly connected to the rear side of the back plate, four side plates rotatably connected to the back plate, a front plate connected to the four side plates, and a connecting assembly for fixedly connecting the front plate and the side plates together.

[0008] As a preferred solution of the protective device for circuit breaker of the utility model, wherein: a toggle opening is opened at the front plate corresponding to the switch on the circuit breaker, an opening and closing door is hinged at the toggle opening, and a movable side of the opening and closing door is clamped with the front plate.

[0009] As a preferred solution of the protective device for circuit breaker of the utility model, a protrusion is fixedly connected to the rear side of the front plate, and the protrusion is engaged with a groove provided on the front side of the side plate.

[0010] As a preferred solution of the protective device for circuit breaker described in the utility model, wherein: the connecting assembly includes a plug plate fixedly connected to the front plate, a fixed block engaged with the plug plate, and a positioning piece connected to the fixed block and the plug plate, the fixed block is fixedly connected to the side plate, a slot is provided on the fixed block, the slot is engaged with the plug plate, a through slot connected to the slot is provided on the top of the fixed block, and the positioning piece is connected to the through slot.

[0011] As a preferred solution of the protective device for circuit breaker described in the utility model, the positioning member includes a positioning plate movably connected to the through slot, the bottom end of the positioning plate is engaged with the positioning slot provided on the top of the plug plate, the top of the positioning plate is provided with a receiving slot, a pair of movable plates are slidably provided in the receiving slot, a spring is fixedly connected between the pair of movable plates, a limiting rod is fixedly connected to the side of the pair of movable plates away from each other, and the limiting rod passes through the receiving slot and is connected to the inner wall of the through slot.

[0012] As a preferred solution of the protective device for circuit breaker of the utility model, a limiting groove is provided on the inner wall of the through groove, and the limiting rod is engaged with the limiting groove.

[0013] As a preferred solution of the protective device for circuit breaker of the utility model, wherein: a through slot is provided on the positioning plate, and the limiting rod slides through the through slot.

[0014] Beneficial effects of the utility model:

[0015] The front plate in the utility model is detachable, and the four side plates can be rotated and opened, which expands the space around the circuit breaker, allowing operators to spread out when repairing and maintaining the circuit breaker, thereby facilitating operators to repair and maintain the circuit breaker. In the utility model, by providing a connecting component, the front plate and the side plates can be quickly fixedly connected together, and are easy to disassemble, so that it is convenient to open the side plates later to repair and maintain the circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0017] Figure 1The utility model is a schematic diagram of the overall structure of the protective device for circuit breaker.

[0018] Figure 2 It is a schematic structural diagram of the protective device for circuit breaker of the utility model when the front plate is opened.

[0019] Figure 3 The utility model is a schematic structural diagram of the front plate of the protective device for circuit breaker.

[0020] Figure 4 The utility model is a schematic diagram of the structure of the connection assembly of the protective device for the circuit breaker.

[0021] Figure 5 The utility model is a schematic diagram of the exploded structure of the connection assembly of the protective device for the circuit breaker.

[0022] Figure 6 It is a schematic structural diagram of the protective device for circuit breaker of the utility model when the side plate is opened.

[0023] In the figure: 100, circuit breaker; 200, protection mechanism; 201, back plate; 202, mounting plate; 203, side plate; 204, front plate; 205, connecting assembly; 2051, plug plate; 2052, fixing block; 2053, through slot; 2053-a, limiting slot; 2054, positioning plate; 2054-a, through slot; 2055, accommodating slot; 2056, moving plate; 2057, positioning slot; 2058, spring; 2059, limiting rod; 206, groove; 207, opening and closing door; 208, protrusion. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0027] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0028] Example 1

[0029] Reference Figure 1-6 The utility model provides a protective device for a circuit breaker, which mainly includes:

[0030] Circuit breaker 100;

[0031] The protection mechanism 200, the circuit breaker 100 is fixedly installed inside the protection mechanism 200, the protection mechanism 200 includes a back plate 201 fixedly connected to the circuit breaker 100, a mounting plate 202 fixedly connected to the rear side of the back plate 201, four side plates 203 rotatably connected to the back plate 201, a front plate 204 connected to the four side plates 203, and a connecting component 205 for fixing the front plate 204 and the side plates 203 together. The four side plates 203 are rotatably connected to the back plate 201 through hinges, and a shell structure can be formed between the four side plates 203 and the back plate 201. Mounting holes are provided at the four corners of the mounting plate 202 to facilitate fixing the mounting plate 202 to the wall. Two connecting components 205 are provided and are symmetrically arranged on the upper and lower sides of the front plate 204.

[0032] In this embodiment, if Figure 1 A toggle opening is provided at the front plate 204 corresponding to the switch on the circuit breaker 100, and an opening and closing door 207 is hinged at the toggle opening. A movable side of the opening and closing door 207 is snap-connected with the front plate 204, and the opening and closing door 207 can be quickly opened, so that the switch can be easily toggled.

[0033] In this embodiment, if Figure 2-3 A protrusion 208 is fixed to the rear side of the front plate 204, and the protrusion 208 is engaged with the groove 206 opened on the front side of the side plate 203. The protrusions 208 are arranged in four groups, two in each group, and the four groups correspond to the four side plates 203 respectively, which can better connect the four side plates 203 and the front plate 204 together.

[0034] In this embodiment, if Figure 4-5The connecting assembly 205 includes a plug board 2051 fixedly connected to the front plate 204, a fixed block 2052 engaged with the plug board 2051, and a positioning piece connected to the fixed block 2052 and the plug board 2051. The fixed block 2052 is fixedly connected to the side plate 203. A slot is provided on the fixed block 2052, and the slot is engaged with the plug board 2051. A through slot 2053 communicating with the slot is provided on the top of the fixed block 2052, and the positioning piece is connected to the through slot 2053. The positioning piece includes a positioning plate 2054 movably connected to the through slot 2053. The bottom end of the positioning plate 2054 is engaged with the positioning slot 2057 provided on the top of the plug board 2051. A receiving slot 2055 is provided on the top of the positioning plate 2054. The receiving slot 2055 is slidably provided with a pair of movable plates 2056. The pair of movable plates 20 56 is fixedly connected with a spring 2058, and a pair of movable plates 2056 are fixedly connected to the side away from each other with a limiting rod 2059, and the limiting rod 2059 passes through the through groove 2054-a opened on the positioning plate 2054 to pass through the accommodating groove 2055 and engage with the limiting groove 2053-a opened on the inner wall of the through groove 2053. Under the engagement of the limiting rod 2059 and the limiting groove 2053-a, the positioning plate 2054 is not easy to escape from the through groove 2053 and the positioning groove 2057, so that the plug plate 2051 can be fixedly connected with the fixed block 2052, that is, the four side plates 203 and the front plate 204 are fixedly connected together, which is simple to operate and easy to assemble and disassemble, so as to facilitate the expansion of the display space around the circuit breaker 100 in the later stage and facilitate the repair and maintenance of the circuit breaker 100.

[0035] During use, when it is necessary to repair and maintain the circuit breaker 100, both hands hold the pair of movable plates 2056 on the upper part and the pair of movable plates 2056 on the lower part respectively, and then, the pair of movable plates 2056 are tightly grasped so that the pair of movable plates 2056 are brought closer to each other by pressing the spring 2058. When the pair of movable plates 2056 are brought closer, the limiting rod 2059 can be pulled out from the limiting groove 2053-a and retracted into the accommodating groove 2055 through the through groove 2054-a. Then, the movable plate 2056 is tightly grasped and pulled out from the through groove 2053, so that the fixation between the plug plate 2051 and the fixed block 2052 can be released. Then, the front plate 204 is driven to move forward, so that the plug plate 2051 can be pulled out from the slot on the fixed block 2052. At the same time, the protrusion 208 can be pulled out from the groove 206 on the front side of the side plate 203, so that the fixation of the side plate 203 can be released. Then, the side plate 203 is rotated (refer to Figure 6 ), which can expand the space around the circuit breaker 100, thereby facilitating operators to repair and maintain the circuit breaker 100;

[0036] After the maintenance is completed, the four side panels 203 are rotated and reset, and the protrusion 208 on the rear side of the front panel 204 is embedded in the groove 206 on the front side of the side panel 203 to prevent the side panel 203 from rotating. At the same time, the plug plate 2051 is embedded in the slot on the fixed block 2052. Then, hold a pair of movable plates 2056, and put the limit rod 2059 into the accommodating groove 2055. Then, the positioning plate 2054 is embedded into the positioning groove 2057 at the top of the plug plate 2051 through the through groove 2053. Then, release the movable plate 2056. Under the elastic force of the spring 2058, the limit rod 2059 passes through the through groove 2054-a and engages with the limit groove 2053-a to complete the installation.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A protective device for a circuit breaker, characterized in that: include: Breaker(100); A protection mechanism (200), wherein the circuit breaker (100) is fixedly mounted inside the protection mechanism (200), and the protection mechanism (200) comprises a back plate (201) fixedly connected to the circuit breaker (100), a mounting plate (202) fixedly connected to the rear side of the back plate (201), four side plates (203) rotatably connected to the back plate (201), a front plate (204) connected to the four side plates (203), and a connection assembly (205) for fixedly connecting the front plate (204) and the side plates (203); A toggle opening is provided at a position corresponding to the switch on the front plate (204) and the circuit breaker (100); an opening and closing door (207) is hingedly connected to the toggle opening; and a movable side of the opening and closing door (207) is snap-connected to the front plate (204); A protrusion (208) is fixedly connected to the rear side of the front plate (204), and the protrusion (208) is engaged with a groove (206) provided on the front side of the side plate (203).

2. The protection device for a circuit breaker according to claim 1, characterized in that: The connection assembly (205) comprises an inserting plate (2051) fixedly connected to the front plate (204), a fixing block (2052) engaged with the inserting plate (2051), and a positioning member connected to the fixing block (2052) and the inserting plate (2051); the fixing block (2052) is fixedly connected to the side plate (203); a slot is provided on the fixing block (2052); the slot is engaged with the inserting plate (2051); a through slot (2053) communicating with the slot is provided on the top of the fixing block (2052); and the positioning member is connected to the through slot (2053).

3. The protection device for a circuit breaker according to claim 2, characterized in that: The positioning member comprises a positioning plate (2054) movably connected to the through slot (2053); the bottom end of the positioning plate (2054) is engaged with a positioning slot (2057) provided on the top of the plug plate (2051); a receiving slot (2055) is provided on the top of the positioning plate (2054); a pair of movable plates (2056) are slidably provided in the receiving slot (2055); a spring (2058) is fixedly connected between the pair of movable plates (2056); a limiting rod (2059) is fixedly connected to the side of the pair of movable plates (2056) that is away from each other; the limiting rod (2059) passes through the receiving slot (2055) and is connected to the inner wall of the through slot (2053).

4. The protection device for a circuit breaker according to claim 3, characterized in that: A limiting groove (2053-a) is provided on the inner wall of the through groove (2053), and the limiting rod (2059) is engaged with the limiting groove (2053-a).

5. The protection device for a circuit breaker according to claim 3, characterized in that: The positioning plate (2054) is provided with a through slot (2054-a), and the limiting rod (2059) is slidably arranged to penetrate the through slot (2054-a).

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