Protective shell

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a protective shell. Comprising a first protective shell, one end of the first protective shell is slidably connected with a second protective shell, one end of the first protective shell is provided with a positioning mechanism used for limiting the second protective shell, and the positioning mechanism comprises a first positioning plate, a second positioning plate, a clamping plate and a sliding plate; the outer side of the end, away from the first positioning plate, of the sliding plate is slidably connected with a second positioning plate, and clamping plates are fixed to one side of the first positioning plate and one side of the second positioning plate. According to the protective shell provided by the utility model, through cooperation of the first protective shell, the second protective shell, the loading plates and the positioning mechanism, a proper number of loading plates can be selected according to different widths of circuit breakers to be assembled between the first protective shell and the second protective shell; and the first protective shell, the second protective shell and the mounting plate are fixed through the positioning mechanism, so that closed protection is performed on the outer side of the circuit breaker after mounting.

Description

Technical Field

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

[0002] Molded case circuit breakers can automatically cut off the current when the current exceeds the trip setting. The molded case refers to the plastic insulator used as the outer shell of the device to isolate the conductors and the grounded metal parts. The existing molded case circuit breakers are exposed at the inlet and outlet terminals, making it easy for users to get electric shocks. Due to the influence of the external environment, dust, particles and other substances are easy to enter the molded case circuit breaker during long-term use, causing damage to internal parts, resulting in increased production costs and maintenance costs.

[0003] For example, the patent (CN220138218U) discloses a molded case circuit breaker with a protective cover, including a housing, and also including a protective cover arranged on the housing, the protective cover includes a left side plate, a right side plate, an upper baffle connected to the left side plate and the right side plate, and a front baffle, one side of the upper baffle is formed with an inclined surface, and the front baffle is connected to the upper baffle at an angle through the inclined surface. Compared with the existing molded case circuit breakers, which are prone to electric shock due to the exposed conductors at the inlet and outlet terminals, the utility model has the advantage of high safety by setting a protective cover. It also has the advantage of a multi-baffle structure design of the protective cover, so that during long-term use, dust, particles and other substances are not easy to enter the molded case circuit breaker, achieving the advantage of good protection effect;

[0004] When using the above technology, it is found that the following technical problems exist in the prior art: the existing protective shell is not convenient for adjusting the width according to needs during use. Therefore, a protective shell is designed to provide another technical solution to the above technical problem. Utility Model Content

[0005] Based on this, it is necessary to provide a protective shell for the above technical problems, so as to solve the technical problem that the existing protective shell is not convenient to adjust the width according to needs during use.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A protective shell comprises a first protective shell, one end of the first protective shell is slidably connected to a second protective shell, one end of the first protective shell is installed with a positioning mechanism for limiting the second protective shell, the positioning mechanism comprises a first positioning plate, a second positioning plate, a card plate and a sliding plate, one end of the first positioning plate is fixed with a sliding plate, the sliding plate is slidably connected to the second positioning plate on the outer side away from one end of the first positioning plate, one side of the first positioning plate and the second positioning plate are both fixed with a card plate, the card plate and the first protective shell, as well as the card plate and the second protective shell are both slidably connected.

[0008] As a preferred embodiment of the protective shell provided by the utility model, an assembly groove is opened inside the first protective shell near one end of the second protective shell, an assembly plate is fixed to one end of the second protective shell near the first protective shell, and the first protective shell and the second protective shell are slidably connected through the cooperation of the assembly groove and the assembly plate.

[0009] As a preferred embodiment of the protective shell provided by the utility model, an additional plate is provided between the first protective shell and the second protective shell, and the additional plate and the first protective shell, as well as the additional plate and the second protective shell are both slidably connected.

[0010] As a preferred implementation of the protective housing provided by the utility model, an assembly slope is provided on one side of the bottom of the card plate close to the first positioning plate.

[0011] As a preferred embodiment of the protective shell provided by the utility model, a limiting gear is rotatably connected inside the second positioning plate and located on the top of the sliding plate, the limiting gear is meshingly connected to the sliding plate, and a limiting mechanism for limiting the rotation of the limiting gear is installed inside the second positioning plate.

[0012] As a preferred embodiment of the protective shell provided by the utility model, the limiting mechanism includes a positioning screw, an anti-rotation block, a synchronous plate, a guide column and a lifting and limiting column. The second positioning plate is rotatably connected to the side away from the second protective shell inside, the positioning screw is threadedly connected to the anti-rotation block on the outer side of the positioning screw close to the limiting gear, and the anti-rotation block is slidably connected to the limiting gear, a guide column is fixed inside the second positioning plate and at one end of the positioning screw, a lifting and limiting column is slidably connected to the outer side of the guide column, the lifting and limiting column and the second positioning plate, as well as the lifting and limiting column and the second protective shell are all slidably connected, and a synchronous plate is fixed between the anti-rotation block and the lifting and limiting column.

[0013] It can be seen without a doubt that the above-mentioned technical solution of the present application can definitely solve the technical problem to be solved by the present application.

[0014] At the same time, through the above technical solutions, the utility model has at least the following beneficial effects:

[0015] The utility model provides a protective housing, through the cooperation of a first protective shell, a second protective shell, an additional plate and a positioning mechanism, an appropriate number of additional plates can be selected according to the width of the circuit breaker to be assembled between the first protective shell and the second protective shell, and the first protective shell, the second protective shell and the additional plate are fixed by the positioning mechanism, so that the outer side of the circuit breaker is closed and protected after installation;

[0016] Through the cooperation of the first positioning plate, the second positioning plate and the clamping plate, the distance between the first positioning plate and the second positioning plate can be adjusted according to the number of additional plates, and the position between the first positioning plate and the second positioning plate can be fixed by positioning the limiting gear through the limiting mechanism. At the same time, the lifting and lowering of the first positioning plate and the second positioning plate at one end of the first protective shell can be limited by the movement of the lifting and lowering limit column. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the first protective shell of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the second protective shell of the utility model;

[0021] Figure 4 This is a structural schematic diagram of the utility model card board;

[0022] Figure 5 This is a schematic diagram of the internal structure of the second positioning plate of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the synchronization plate of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the anti-rotation block of the utility model.

[0025] In the figure: 1. first protective shell; 2. second protective shell; 3. additional plate; 4. first positioning plate; 5. assembly groove; 6. assembly plate; 7. second positioning plate; 8. clamping plate; 9. assembly slope; 10. sliding plate; 11. limit gear; 12. positioning screw; 13. anti-rotation block; 14. synchronization plate; 15. guide column; 16. lifting limit column. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] Reference Figure 1-Figure 4 , a protective shell, comprising a first protective shell 1, one end of the first protective shell 1 is slidably connected to a second protective shell 2, an assembly groove 5 is opened inside the first protective shell 1 near one end of the second protective shell 2, an assembly plate 6 is fixed to one end of the second protective shell 2 near the first protective shell 1, the first protective shell 1 and the second protective shell 2 are slidably connected through the cooperation of the assembly groove 5 and the assembly plate 6, so that the connection between the first protective shell 1 and the second protective shell 2 can be more stable, an additional plate 3 is arranged between the first protective shell 1 and the second protective shell 2, the additional plate 3 and the first protective shell 1, and the additional plate 3 and the second protective shell 2 are all slidably connected, so that the assembly plate 6 can also be fixed to one end of the additional plate 3 near the first protective shell 1, and an assembly groove 5 is also opened inside the additional plate 3 near one end of the second protective shell 2, so that the assembly of the additional plate 3 can be facilitated, and different numbers of additional plates 3 can be selected according to needs;

[0031] A positioning mechanism for limiting the second protective shell 2 is installed at one end of the first protective shell 1, and the positioning mechanism includes a first positioning plate 4, a second positioning plate 7, a card plate 8 and a sliding plate 10. A sliding plate 10 is fixed to one end of the first positioning plate 4, and the sliding plate 10 is slidably connected to the second positioning plate 7 on the outer side away from one end of the first positioning plate 4, so that the second positioning plate 7 can adjust the distance between it and the first positioning plate 4 by sliding on the outer side of the sliding plate 10. A card plate 8 is fixed on one side of the first positioning plate 4 and the second positioning plate 7. The card plate 8 and the first protective shell 1, and the card plate 8 and the second protective shell 2 are all slidably connected. The shape of the card plate 8 is L-shaped, and an assembly inclined surface 9 is provided on the side of the bottom of the card plate 8 close to the first positioning plate 4, so that after the two card plates 8 are respectively installed in the first protective shell 1 and the second protective shell 2 through the assembly inclined surfaces 9, the position between the first protective shell 1 and the second protective shell 2 can be limited by fixing the first positioning plate 4 and the second positioning plate 7.

[0032] The use process of a protective shell provided by the utility model is as follows: according to the width of the circuit breaker to be protected, an appropriate number of additional plates 3 are selected, and the number of additional plates 3 can be zero or more. When zero additional plates 3 are selected, the first protective shell 1 and the second protective shell 2 are directly assembled through a sliding connection. When multiple additional plates 3 are selected, two adjacent additional plates 3 among the multiple additional plates 3 are assembled by sliding connection, and then the assembled multiple additional plates 3 are placed between the first protective shell 1 and the second protective shell 2, and they are integrated through sliding connection;

[0033] Then, according to the different number of additional plates 3 selected, pull the second positioning plate 7 to slide on the outside of the sliding plate 10. When the second positioning plate 7 is pulled to the appropriate position, the clamping plates 8 on one side of the first positioning plate 4 and the second positioning plate 7 can slide into the first protective shell 1 or the second protective shell 2. Then, the first positioning plate 4 and the second positioning plate 7 are lowered to drive the clamping plate 8 to lower, so that the first protective shell 1 and the second protective shell 2 can be installed on the outside of the circuit breaker to increase protection.

[0034] Embodiment 2

[0035] Reference Figure 5-Figure 7 , a protective shell, the interior of the second positioning plate 7 and the top of the sliding plate 10 are rotatably connected to the limiting gear 11, the limiting gear 11 is meshed and connected with the sliding plate 10, so that when the rotation of the limiting gear 11 is limited, the movement of the sliding plate 10 can be limited, and the interior of the second positioning plate 7 is equipped with a limiting mechanism for limiting the rotation of the limiting gear 11, the limiting mechanism includes a positioning screw 12, an anti-rotation block 13, a synchronous plate 14, a guide column 15 and a lifting limiting column 16, the inside of the second positioning plate 7 is rotatably connected with the positioning screw 12 on the side away from the second protective shell 2, the outer side of the positioning screw 12 close to the side of the limiting gear 11 is threadedly connected with the anti-rotation block 13, and the anti-rotation block 13 is slidably connected with the limiting gear 11, so that when the anti-rotation block 13 is located on the inner side of the limiting gear 11, the limiting gear 11 cannot rotate, and the shape of the anti-rotation block 13 is a polygon;

[0036] A guide column 15 is fixed inside the second positioning plate 7 and at one end of the positioning screw 12. A lifting limit column 16 is slidably connected to the outside of the guide column 15. The lifting limit column 16 and the second positioning plate 7 are slidably connected, and the lifting limit column 16 and the second protective shell 2 are all slidably connected. Therefore, when the lifting limit column 16 is located inside the second protective shell 2, the second positioning plate 7 cannot be lifted or lowered. A synchronous plate 14 is fixed between the anti-rotation block 13 and the lifting limit column 16, so that the movement of the anti-rotation block 13 drives the lifting limit column 16 to move through the synchronous plate 14.

[0037] In other embodiments, a limiting mechanism may also be installed inside the first positioning plate 4, and the lifting limiting column 16 in the limiting mechanism inside the first positioning plate 4 is slidably connected to the first protective shell 1 to increase the lifting limit of the first positioning plate 4 and the second positioning plate 7.

[0038] The use process of a protective shell provided by the utility model is as follows: when it is necessary to fix the position of the sliding plate 10, the positioning screw 12 is rotated to allow the rotation of the positioning screw 12 to drive the threaded anti-rotation block 13 to move. At this time, the synchronous plate 14 fixed between the anti-rotation block 13 and the lifting limit column 16 prevents the anti-rotation block 13 from rotating simultaneously with the positioning screw 12, and allows the rotation of the positioning screw 12 to drive the anti-rotation block 13 to move in the direction close to the limit gear 11. The movement of the anti-rotation block 13 enters the interior of the slidingly connected limit gear 11, restricts the rotation of the limit gear 11, and allows the limit gear 11 to limit the position of the meshing sliding plate 10. At the same time, the movement of the anti-rotation block 13 drives the lifting limit column 16 to move through the synchronous plate 14, allowing the lifting limit column 16 to slide on the outside of the guide column 15 and enter the interior of the second protective shell 2 to limit the rise of the second positioning plate 7.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A protective housing, characterized in that: The invention comprises a first protective shell (1), one end of which is slidably connected to a second protective shell (2), one end of which is provided with a positioning mechanism for limiting the second protective shell (2), the positioning mechanism comprising a first positioning plate (4), a second positioning plate (7), a clamping plate (8) and a sliding plate (10), one end of which is fixed with a sliding plate (10), the outer side of the sliding plate (10) away from one end of the first positioning plate (4) being slidably connected to the second positioning plate (7), one side of each of the first positioning plate (4) and the second positioning plate (7) being fixed with a clamping plate (8), the clamping plate (8) and the first protective shell (1), as well as the clamping plate (8) and the second protective shell (2) being slidably connected.

2. A protective housing according to claim 1, characterized in that: An assembly groove (5) is provided inside the first protective shell (1) at one end close to the second protective shell (2); an assembly plate (6) is fixed to one end of the second protective shell (2) close to the first protective shell (1); the first protective shell (1) and the second protective shell (2) are slidably connected through the cooperation of the assembly groove (5) and the assembly plate (6).

3. A protective housing according to claim 1, characterized in that: An additional plate (3) is provided between the first protective shell (1) and the second protective shell (2); the additional plate (3) and the first protective shell (1), and the additional plate (3) and the second protective shell (2) are both slidably connected.

4. The protective housing according to claim 1, characterized in that: A mounting inclined surface (9) is provided on one side of the bottom of the clamping plate (8) close to the first positioning plate (4).

5. The protective housing according to claim 1, characterized in that: A limit gear (11) is rotatably connected inside the second positioning plate (7) and located on the top of the sliding plate (10); the limit gear (11) is meshingly connected to the sliding plate (10); and a limit mechanism for limiting the rotation of the limit gear (11) is installed inside the second positioning plate (7).

6. A protective housing according to claim 5, characterized in that: The limiting mechanism comprises a positioning screw (12), an anti-rotation block (13), a synchronous plate (14), a guide column (15) and a lifting limiting column (16); the positioning screw (12) is rotatably connected to the side of the second positioning plate (7) away from the second protective shell (2); the anti-rotation block (13) is threadedly connected to the outer side of the positioning screw (12) close to the limiting gear (11), and the anti-rotation block (13) is slidably connected to the limiting gear (11); the guide column (15) is fixed inside the second positioning plate (7) and at one end of the positioning screw (12); the lifting limiting column (16) is slidably connected to the outer side of the guide column (15); the lifting limiting column (16) and the second positioning plate (7) and the lifting limiting column (16) and the second protective shell (2) are all slidably connected; and a synchronous plate (14) is fixed between the anti-rotation block (13) and the lifting limiting column (16).

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