Miniature circuit breaker easy to disassemble and assemble

Abstract

The utility model relates to a miniature circuit breaker easy to disassemble and assemble, comprising a housing, the back surface of the housing is provided with an imbedding groove and a clamping groove which are mutually staggered and overlapped, the imbedding groove is inclined relative to the horizontal plane, the clamping groove is parallel relative to the horizontal plane, and two side walls of the clamping groove are respectively provided with a first limiting groove. And two first limiting bulges which are symmetrical along the center of the shell and are respectively opposite to the two first limiting grooves are formed on the bottom of the clamping groove. According to the miniature circuit breaker easy to disassemble and assemble, after the placement groove is aligned with the guide rail, the guide rail is embedded into the placement groove, and the shell is rotated, so that the end part of the bending part of the guide rail is clamped into the first limiting groove, and meanwhile, the first limiting bulge is clamped on the inner side surface of the bending part of the guide rail, so that the shell and the guide rail are fixedly mounted, and the circuit breaker is very convenient to disassemble and assemble; and the structure is simple, and the durability is better.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a small circuit breaker which is easy to disassemble and assemble. Background Art

[0002] The circuit breaker plays an overload and circuit breaker protection role in the circuit, that is, it automatically disconnects the circuit when overloaded or short-circuited. It can also be used as a switch. Because the arc extinguishing medium is air, it is also called an air switch. Generally, the circuit breaker is installed on the guide rail of the electrical box. The existing way of installing the circuit breaker on the guide rail is to provide a snap structure on the back of the circuit breaker to clamp on the two bent parts of the guide rail. The main component of the snap structure is a latch that can be reset by external force. The circuit breaker is fixed on the guide rail by clamping the latch on the bent part of the guide rail and cooperating with the slot on the circuit breaker. When disassembling and assembling the circuit breaker, it is necessary to operate by toggling the latch. However, since a screwdriver or other tool is required to toggle the latch, and when the operating space in the electrical box is limited, the operation of toggling the latch is not convenient. In addition, the latch will get stuck during frequent fluctuations, resulting in the inability to disassemble and assemble the circuit breaker normally.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a small circuit breaker which is easy to disassemble and assemble, and solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A small circuit breaker that is easy to disassemble and assemble comprises a shell, wherein the back of the shell is provided with insertion grooves and clamping grooves that overlap each other, wherein the insertion grooves are inclined relative to a horizontal plane, the clamping grooves are parallel to the horizontal plane, and a first limiting groove is respectively provided on two side walls of the clamping grooves, and two first limiting protrusions are formed on the bottom of the clamping grooves that are symmetrical along the center of the shell and respectively opposite to the two first limiting grooves.

[0007] Preferably, the width of the first limiting groove gradually increases from the groove bottom to the groove opening.

[0008] Preferably, a plurality of splicing columns are formed on the left side surface of the shell, and a plurality of splicing holes corresponding to the positions of the plurality of splicing columns and matching with the splicing columns are opened on the right side surface of the shell.

[0009] Preferably, a limiting ring is provided on the peripheral side surface of the splicing column, and a limiting ring groove matching the limiting ring is opened on the inner wall of the splicing hole.

[0010] Preferably, a first splicing plate is formed on the left side surface of the housing, and a first splicing groove corresponding to the position of the first splicing plate and matching with the first splicing plate is formed on the right side surface of the housing.

[0011] Preferably, a second limiting protrusion is formed on the bottom of the first splicing groove, and a first limiting hole matching with the second limiting protrusion is formed on the first splicing plate.

[0012] Preferably, a second splicing plate is formed on the right side surface of the housing, a second splicing groove corresponding to the position of the second splicing plate and matching with the second splicing plate is formed on the left side surface of the housing, a third limiting protrusion is formed on the bottom of the second splicing groove, and a second limiting hole matching with the third limiting protrusion is formed on the second splicing plate.

[0013] In summary, the beneficial effects of the present utility model are as follows: When installing the circuit breaker on the guide rail, align the placement groove with the guide rail and place the guide rail into the placement groove, then rotate the housing so that the bent portion of the guide rail is caught in the first limiting groove, and at the same time make the first limiting protrusion abut against the inner side surface of the bent portion of the guide rail. Through the cooperation of the first limiting protrusion and the first limiting groove, the fixed connection between the housing and the guide rail can be realized, thereby realizing the installation of the circuit breaker. When disassembling the circuit breaker, rotate the housing to disengage the bent portion of the guide rail from the first limiting groove. It can be seen that the disassembly and assembly of this circuit breaker are very convenient, do not require tools, are convenient for workers to operate, and have a simple and reliable structure, ensuring the durability of the circuit breaker during frequent disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a structural schematic diagram of another perspective of the present utility model;

[0017] Figure 3 is a structural schematic diagram of another perspective of the present utility model;

[0018] Figure 4 is a structural schematic diagram of the present utility model when installed on the guide rail;

[0019] Figure 5 is a structural schematic diagram of the present utility model when assembled.

[0020] In the figure: 1. Housing; 11. Insertion groove; 12. Clamping groove; 121. First limiting groove; 13. First limiting protrusion; 14. Splicing post; 141. Limiting ring; 15. Splicing hole; 151. Limiting ring groove; 16. First splicing plate; 161. First limiting hole; 17. First splicing groove; 171. Second limiting protrusion; 18. Second splicing plate; 181. Second limiting hole; 19. Second splicing groove; 191. Third limiting protrusion; 2. Guide rail; 21. Bending part. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying Figures 1-5 drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] As shown in the figure, a small circuit breaker that is easy to disassemble and assemble includes a housing 1. An insertion groove 11 and a clamping groove 12 that are staggered and overlapped are formed on the back surface of the housing 1. The insertion groove 11 is inclined relative to the horizontal plane, and the width of the insertion groove 11 is the same as the width of the guide rail 2. The clamping groove 12 is parallel to the horizontal plane, and a first limiting groove 121 is formed on each of the two side walls of the clamping groove 12. The distance between the bottoms of the two first limiting grooves 121 is the same as the width of the guide rail 2. The width of the first limiting groove 121 is the same as the thickness of the bending part 21 of the guide rail 2. Two first limiting protrusions 13 that are symmetric about the center of the housing 1 and are respectively opposite to the two first limiting grooves 121 are formed on the bottom of the clamping groove 12. The distance between the first limiting protrusion 13 and the bottom of the corresponding first limiting groove 121 is the same as the width of the bending part 21 of the guide rail 2.

[0023] In the above embodiment, when the housing 1 is fixedly installed on the guide rail 2, the housing 1 is slightly tilted to align the placement groove 11 with the guide rail 2, and then the guide rail 2 is placed into the placement groove 11. Then, the housing 1 is pressed inward and rotated in the direction of straightening the housing 1, so that the bent portion 21 of the guide rail 2 is gradually snapped into the first limiting groove 121. When the housing 1 is completely straightened, the end of the bent portion 21 of the guide rail 2 abuts against the bottom of the first limiting groove 121, and at the same time, the first limiting protrusion 13 abuts against the inner side surface of the bent portion 21 of the guide rail 2. Through the cooperation of the first limiting protrusion 13 and the first limiting groove 121, the bent portion 21 of the guide rail 2 is stably held in the first limiting groove 121, thereby realizing the fastening of the housing 1 and the guide rail 2, and further realizing the fixed installation of the housing 1. When the housing 1 is removed from the guide rail 2, the housing 1 is rotated to withdraw the bent portion 21 of the guide rail 2 from the first limiting groove 121. It can be seen that in the above structure and method, the installation and disassembly of the housing 1 are very convenient and do not require tools, thus facilitating the disassembly and assembly operation of the circuit breaker. Moreover, the structure is simple and durable, and can ensure the durability of the circuit breaker during frequent disassembly and assembly.

[0024] Preferably, the width of the first limiting groove 121 gradually increases from the bottom of the groove to the opening of the groove, so that the width of the opening of the first limiting groove 121 is greater than the thickness of the bent portion 21 of the guide rail 2, thereby making it easier for the bent portion 21 of the guide rail 2 to be snapped into the first limiting groove 121 through the opening of the first limiting groove 121 when the housing 1 rotates, and further facilitating the installation of the circuit breaker.

[0025] Further, a plurality of splicing columns 14 are formed on the left side surface of the housing 1, and a plurality of splicing holes 15 corresponding to the positions of the plurality of splicing columns 14 and matching with the splicing columns 14 are formed on the right side surface of the housing 1.

[0026] In the above preferred embodiment, when a plurality of circuit breakers are installed on the guide rail 2 for assembly, after the housing 1 is installed on the guide rail 2, the housing 1 is slid along the length direction of the guide rail 2, so that the splicing columns 14 are inserted into the splicing holes 15 on the housing 1 of the adjacent circuit breaker. Through the cooperation of the splicing columns 14 and the splicing holes 15, the adjacent two circuit breakers are more closely fitted together after assembly, thereby ensuring that a plurality of circuit breakers can be neatly arranged on the guide rail 2 after assembly. Moreover, after the adjacent two circuit breaker housings 1 are closely fitted through the cooperation of the splicing columns 14 and the splicing holes 15, the rotation of the housing 1 between the two is mutually limited, so that the circuit breaker is more firmly installed on the guide rail 2.

[0027] Preferably, a limiting ring 141 is provided on the circumferential side surface of the splicing column 14, and a limiting ring groove 151 matching the limiting ring 141 is formed on the inner wall of the splicing hole 15. After the splicing column 14 is inserted into the splicing hole 15, the limiting ring 141 is snapped into the limiting ring groove 151. The cooperation between the limiting ring 141 and the limiting ring groove 151 limits the displacement between the shells 1 of two adjacent circuit breakers, so that multiple circuit breakers are more closely fitted together after being assembled.

[0028] Furthermore, a first splicing plate 16 is formed on the left side surface of the shell 1, and a first splicing groove 17 corresponding to the position of the first splicing plate 16 and matching the first splicing plate 16 is formed on the right side surface of the shell 1.

[0029] Specifically, a second limiting protrusion 171 is formed on the bottom of the first splicing groove 17, and a first limiting hole 161 matching the second limiting protrusion 171 is formed on the first splicing plate 16.

[0030] Specifically, a second splicing plate 18 is formed on the right side surface of the shell 1, a second splicing groove 19 corresponding to the position of the second splicing plate 18 and matching the second splicing plate 18 is formed on the left side surface of the shell 1, a third limiting protrusion 191 is formed on the bottom of the second splicing groove 19, and a second limiting hole 181 matching the third limiting protrusion 191 is formed on the second splicing plate 18.

[0031] In the above preferred embodiment, when multiple circuit breakers are installed on the rail 2 for assembly, while the splicing column 14 is inserted into the splicing hole 15, the first splicing plate 16 and the second splicing plate 18 are respectively inserted into the first splicing groove 17 and the second splicing groove 19 on the shell 1 of the adjacent circuit breaker, and the second limiting protrusion 171 and the third limiting protrusion 191 are respectively snapped into the first limiting hole 161 and the second limiting hole 181. Through the cooperation between the first splicing plate 16 and the first splicing groove 17, the second splicing plate 18 and the second splicing groove 19, the second limiting protrusion 171 and the first limiting hole 161, and the third limiting protrusion 191 and the second limiting hole 181, the displacement between the shells 1 of two adjacent circuit breakers is limited, so that multiple circuit breakers are more closely fitted together after being assembled. Moreover, in the use scenario where the circuit breaker needs to be fixedly installed without the rail 2, by passing screws through the first limiting hole 161 and the second limiting hole 181 and screwing the screws into the installation surface, the shell 1 can be fixed on the installation surface to realize the installation of the circuit breaker, thus making the circuit breaker have better practicability.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An easily disassembled miniature circuit breaker, comprising a housing (1), characterized in that: The back side of the housing (1) is provided with insertion grooves (11) and clamping grooves (12) which overlap and stagger with each other, the insertion grooves (11) are inclined relative to a horizontal plane, the clamping grooves (12) are parallel to the horizontal plane, and two side walls of the clamping groove (12) are respectively provided with a first limiting groove (121), and the bottom of the clamping groove (12) is provided with two first limiting protrusions (13) which are symmetrical along the center of the housing (1) and respectively opposite to the two first limiting grooves (121).

2. The easily disassembled miniature circuit breaker according to claim 1, characterized in that: The width of the first limiting groove (121) gradually increases from the groove bottom to the groove opening.

3. The easily disassembled miniature circuit breaker according to claim 1, characterized in that: A plurality of splicing columns (14) are formed on the left side surface of the shell (1), and a plurality of splicing holes (15) corresponding to the positions of the plurality of splicing columns (14) and matching the splicing columns (14) are opened on the right side surface of the shell (1).

4. The easily disassembled miniature circuit breaker according to claim 3 is characterized in that: A limiting ring (141) is provided on the peripheral side surface of the splicing column (14), and a limiting ring groove (151) matching the limiting ring (141) is provided on the inner wall of the splicing hole (15).

5. The easily disassembled miniature circuit breaker according to claim 4, characterized in that: A first splicing plate (16) is formed on the left side surface of the shell (1), and a first splicing groove (17) corresponding to the position of the first splicing plate (16) and matching the first splicing plate (16) is opened on the right side surface of the shell (1).

6. The easily disassembled miniature circuit breaker according to claim 5, characterized in that: A second limiting protrusion (171) is formed on the bottom of the first splicing groove (17), and a first limiting hole (161) matching the second limiting protrusion (171) is formed on the first splicing plate (16).

7. The easily disassembled miniature circuit breaker according to claim 6, characterized in that: A second splicing plate (18) is formed on the right side surface of the shell (1), a second splicing groove (19) corresponding to the position of the second splicing plate (18) and matching the second splicing plate (18) is formed on the left side surface of the shell (1), a third limiting protrusion (191) is formed on the bottom of the second splicing groove (19), and a second limiting hole (181) matching the third limiting protrusion (191) is formed on the second splicing plate (18).

Images