High-strength circuit breaker shell

Abstract

The utility model provides a high-strength circuit breaker shell, which belongs to the technical field of circuit breakers, and comprises a bottom shell and a cover shell, the top edge of the bottom shell is provided with an inner convex edge, the bottom edge of the cover shell is provided with an outer convex edge, the outer convex edge is inserted into one side of the bottom shell in a sliding manner, one corner of the bottom shell is provided with a hinged shaft, and the circumferential surface of the hinged shaft is rotatably connected with a closing plate. The other corner of the bottom shell is fixedly connected with a U-shaped frame, and a buckling mechanism is arranged at the position, close to the sealing plate, of the U-shaped frame. The sealing plate cannot be separated from the bottom shell even if the nut is loosened due to the dual fixing mode, and the bottom shell and the cover shell are spliced, so that the fixing structure is stable, the mounting mode is simple, and the assembly and the disassembly are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of circuit breakers, and in particular relates to a high-strength circuit breaker housing. Background Art

[0002] A circuit breaker is an electrical device used to control and protect circuits. Its main function is to automatically cut off the circuit when a short circuit, overload or other abnormal situation occurs in the circuit to prevent equipment damage or accidents such as fire. A circuit breaker usually consists of a contact system, an arc extinguishing system, an operating mechanism and a release.

[0003] The Chinese patent with application number CN202321339918.X in the prior art discloses a high-strength vacuum circuit breaker shell, which relates to the technical field of vacuum circuit breakers, and includes a shell base and a bottom cover. The outer side surface of the shell base is provided with a plurality of nameplate placement platforms and a plurality of mounting bosses, and the shell is provided with mounting holes located on the mounting bosses; the plurality of nameplate placement platforms and mounting bosses are integrally formed with the shell base; the present application improves the connection stability between the nameplate placement platform and the mounting boss and the outer side surface of the shell base by integrally casting the nameplate placement platform and the mounting boss with the shell base, reduces the possibility of welds or even fractures at the welding points between the two and the shell base due to long-term vibration, and further improves the structural strength of the outer side surface of the shell base.

[0004] Before the frame circuit breaker is installed, it is usually equipped with a casing. The circuit breaker is installed with the casing, and then the circuit breaker is indirectly installed by installing the casing with the wall. However, since the circuit breaker and the casing are mostly installed by bolts or connection, bolt installation is easy to damage the outer surface of the circuit breaker, and the connection method is mostly not easy to ensure the firmness of the installation, and the circuit breaker is easily damaged when the circuit breaker is disassembled. For this reason, we propose a high-strength circuit breaker casing. Utility Model Content

[0005] The utility model aims to provide a high-strength circuit breaker housing, aiming to solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A high-strength circuit breaker housing comprises a bottom shell and a cover shell, wherein an inner convex edge is arranged at the top edge of the bottom shell, an outer convex edge is arranged at the bottom edge of the cover shell, the outer convex edge is slidably inserted into one side of the bottom shell, a hinge shaft is arranged at one corner of the bottom shell, a circumferential surface of the hinge shaft is rotatably connected with a closing plate, a U-shaped frame is fixedly connected with the other corner of the bottom shell, and a snap mechanism is arranged on the U-shaped frame near the closing plate.

[0008] As a preferred solution of the utility model, the snap mechanism includes a positioning rod, a spring and a baffle, the positioning rod is slidably connected in the U-shaped frame, both ends of the positioning rod pass through the U-shaped frame and extend to both sides, the spring is sleeved on the circumferential surface of the positioning rod, the baffle is fixedly connected to the circumferential surface of the positioning rod, and the spring and the baffle are located in the U-shaped frame.

[0009] As a preferred solution of the utility model, a positioning block is fixedly connected to the closing plate near the U-shaped frame, a positioning hole is opened on the side of the positioning block, and the end of the positioning rod passes through the positioning hole and is threadedly connected with a nut.

[0010] As a preferred solution of the utility model, the blocking piece is located between the spring and the positioning block.

[0011] As a preferred solution of the utility model, a vent hole is provided at the bottom of the bottom shell.

[0012] As a preferred solution of the utility model, the bottom of the bottom shell is provided with reinforcing ribs.

[0013] As a preferred solution of the utility model, waist edges are arranged around the cover shell, and the waist edges are fitted to the top of the bottom shell.

[0014] As a preferred solution of the utility model, a handle is provided on the top of the bottom shell, and a nameplate portion is provided on one side of the bottom shell.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. When installing this solution, after inserting the bottom shell, rotate the closing plate to close the inserted side, then pass the positioning rod through the positioning hole to lock the position of the positioning block, and finally tighten the nut to fix the position of the closing plate. The double fixing method means that even if the nut is loose, the closing plate will not separate from the bottom shell. The bottom shell and the cover shell are spliced ​​in a structure with a stable fixed structure, a simple installation method, and easy assembly and disassembly.

[0017] 2. The reinforcement ribs of this scheme are cast in one piece and arranged at the bottom of the bottom shell, which greatly strengthens the structural strength of the bottom shell, is not prone to deformation, and prolongs the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0019] In the attached picture:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a bottom view of the utility model;

[0022] Figure 3 This is a structural diagram of the cover shell of the utility model;

[0023] Figure 4 This is a structural diagram of the bottom shell of the utility model;

[0024] Figure 5 For the utility model Figure 4 Exploded diagram.

[0025] In the figure: 1, bottom shell; 2, cover shell; 3, inner convex edge; 4, outer convex edge; 5, waist edge; 6, hinge shaft; 7, closing plate; 8, U-shaped frame; 9, positioning block; 901, positioning hole; 10, positioning rod; 11, spring; 12, baffle; 13, nut; 14, vent hole; 15, nameplate; 16, reinforcing rib; 17, handle. DETAILED DESCRIPTION

[0026] 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.

[0027] Example

[0028] See also Figure 1-Figure 5 , the technical solution provided by this embodiment is as follows:

[0029] A high-strength circuit breaker housing comprises a bottom shell 1 and a cover shell 2. An inner convex edge 3 is provided at the top edge of the bottom shell 1, and an outer convex edge 4 is provided at the bottom edge of the cover shell 2. The outer convex edge 4 is slidably inserted into one side of the bottom shell 1. A hinge shaft 6 is provided at one corner of the bottom shell 1. The circumferential surface of the hinge shaft 6 is rotatably connected with a closing plate 7. A U-shaped frame 8 is fixedly connected at the other corner of the bottom shell 1, and a snap mechanism is provided at the U-shaped frame 8 near the closing plate 7.

[0030] In a specific embodiment of the utility model, the cover shell 2 can be inserted from one side of the bottom shell 1, and the inner convex edge 3 is used to limit the movement of the outer convex edge 4, so that the outer convex edge 4 can slide in the bottom shell 1 to prevent the bottom shell 1 from moving up and down. The closing plate 7 is located on the insertable side, and the hinge shaft 6 is used to support the closing plate 7 to rotate. When installing, after the bottom shell 1 is inserted, the closing plate 7 is rotated to close the inserted side, and then the positioning rod 10 passes through the positioning hole 901 to lock the position of the positioning block 9, and finally the nut 13 is tightened to fix the position of the closing plate 7. The double fixing method, even if the nut 13 is loose, the closing plate 7 will not be separated from the bottom shell 1, the bottom shell 1 and the cover shell 2 are spliced ​​structure, the fixed structure is stable, the installation method is simple, and it is convenient to assemble and easy to disassemble.

[0031] Specifically, the snap mechanism includes a positioning rod 10, a spring 11 and a baffle 12. The positioning rod 10 is slidably connected in the U-shaped frame 8. Both ends of the positioning rod 10 pass through the U-shaped frame 8 and extend to both sides. The spring 11 is sleeved on the circumferential surface of the positioning rod 10. The baffle 12 is fixedly connected to the circumferential surface of the positioning rod 10. The spring 11 and the baffle 12 are located in the U-shaped frame 8. The closing plate 7 is fixedly connected with a positioning block 9 near the U-shaped frame 8. A positioning hole 901 is opened on the side of the positioning block 9. The end of the positioning rod 10 passes through the positioning hole 901 and is threadedly connected with a nut 13. The baffle 12 is located between the spring 11 and the positioning block 9.

[0032] In a specific embodiment of the utility model, the U-shaped frame 8 is used to limit the linear movement of the positioning rod 10, and the spring 11 is used to provide elasticity. When the closing plate 7 and the bottom shell 1 are closed, the positioning rod 10 passes through the positioning hole 901 to prevent the closing plate 7 from moving and preliminarily fix the position of the closing plate 7. Tightening the nut 13 can perform secondary fixation to reinforce the installation structure and prevent loosening. By utilizing the elasticity of the spring 11 itself, even if the nut 13 is loose, the closing plate 7 will not separate from the positioning rod 10.

[0033] Specifically, a vent hole 14 is formed at the bottom of the bottom shell 1 .

[0034] In a specific embodiment of the present invention, when the interior of the bottom shell 1 is too high, hot air can be discharged through the vent holes 14 to assist in heat dissipation.

[0035] Specifically, a reinforcing rib 16 is provided at the bottom of the bottom shell 1 .

[0036] In a specific embodiment of the present invention, the reinforcing ribs 16 are integrally cast and arranged at the bottom of the bottom shell 1, which greatly strengthens the structural strength of the bottom shell 1, makes it less likely to deform, and prolongs its service life.

[0037] Specifically, the cover shell 2 is provided with waist edges 5 around its periphery, and the waist edges 5 are fitted to the top of the bottom shell 1 .

[0038] In a specific embodiment of the present invention, the waist edge 5 is located on the upper side of the bottom shell 1 and is used to cover the gap between the bottom shell 1 and the cover shell 2 to prevent dust from entering.

[0039] Specifically, a handle 17 is disposed on the top of the bottom shell 1 , and a nameplate portion 15 is disposed on one side of the bottom shell 1 .

[0040] In a specific embodiment of the present invention, the handle 17 is used for stacking and palletizing, and the nameplate portion 15 is used for sticking a nameplate.

[0041] Working principle: during installation, after inserting the bottom shell 1, rotate the closing plate 7 to close the inserted side, and then pass the positioning rod 10 through the positioning hole 901 to lock the position of the positioning block 9, and finally tighten the nut 13 to fix the position of the closing plate 7. The double fixing method means that even if the nut 13 is loose, the closing plate 7 will not be separated from the bottom shell 1. The bottom shell 1 and the cover shell 2 are spliced ​​in a structure with a stable fixed structure, a simple installation method, and convenient assembly and easy disassembly.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. High strength circuit breaker housing, characterized in that: The invention comprises a bottom shell (1) and a cover shell (2), wherein the top edge of the bottom shell (1) is provided with an inner convex edge (3), the bottom edge of the cover shell (2) is provided with an outer convex edge (4), the outer convex edge (4) is slidably inserted into one side of the bottom shell (1), a hinge shaft (6) is provided at one corner of the bottom shell (1), the circumferential surface of the hinge shaft (6) is rotatably connected to a closing plate (7), and a U-shaped frame (8) is fixedly connected to the other corner of the bottom shell (1), and a snap mechanism is provided on the U-shaped frame (8) near the closing plate (7).

2. The high-strength circuit breaker housing according to claim 1, characterized in that: The buckle mechanism comprises a positioning rod (10), a spring (11) and a baffle (12); the positioning rod (10) is slidably connected in the U-shaped frame (8); both ends of the positioning rod (10) penetrate the U-shaped frame (8) and extend to both sides; the spring (11) is sleeved on the circumferential surface of the positioning rod (10); the baffle (12) is fixedly connected to the circumferential surface of the positioning rod (10); and the spring (11) and the baffle (12) are located in the U-shaped frame (8).

3. The high-strength circuit breaker housing according to claim 2, characterized in that: The closing plate (7) is fixedly connected to a positioning block (9) near the U-shaped frame (8), a positioning hole (901) is provided on the side of the positioning block (9), and the end of the positioning rod (10) passes through the positioning hole (901) and is threadedly connected to a nut (13).

4. The high-strength circuit breaker housing according to claim 3, characterized in that: The blocking piece (12) is located between the spring (11) and the positioning block (9).

5. The high-strength circuit breaker housing according to claim 4, characterized in that: A vent hole (14) is provided at the bottom of the bottom shell (1).

6. The high-strength circuit breaker housing according to claim 5, characterized in that: The bottom of the bottom shell (1) is provided with reinforcing ribs (16).

7. The high-strength circuit breaker housing according to claim 6, characterized in that: The cover shell (2) is provided with waist edges (5) around its periphery, and the waist edges (5) are fitted to the top of the bottom shell (1).

8. The high-strength circuit breaker housing according to claim 7, characterized in that: A handle (17) is provided on the top of the bottom shell (1), and a nameplate portion (15) is provided on one side of the bottom shell (1).

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