Miniature circuit breaker housing convenient for line fixation

Abstract

The utility model discloses a miniature circuit breaker housing convenient for line fixation, and specifically relates to the miniature circuit breaker housing technology field, the miniature circuit breaker housing comprises a housing body, the top end of the housing body is provided with an input interface, the bottom end of the housing body is provided with an output interface, and the input interface and the output interface are internally provided with fixing assemblies used for fixing lines. The two fixing assemblies each comprise a first clamping block and a second clamping block which are distributed front and back, and mounting grooves are formed in the bottoms of the front ends of the two second clamping blocks. According to the utility model, the detachable second clamping blocks are arranged in the input interface and the output interface on the shell, after a circuit copper wire is wound on the electrifying rods of the second clamping blocks, the bolts are screwed to push the first clamping blocks to be attached to the second clamping blocks, and the second clamping blocks push the limiting rings to clamp the circuit copper wire wound on the electrifying rods; in this way, poor contact between the circuit and the electrifying rod can be avoided, meanwhile, the circuit is clamped by the second clamping block and the first clamping block, and the firmness between the circuit and the shell can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of miniature circuit breaker casings, and more specifically to a miniature circuit breaker casing which is convenient for fixing a circuit. Background Art

[0002] Miniature circuit breaker (MCB) is the most widely used terminal protection device in the terminal distribution device of building electrical equipment. It is a mechanical switch device that can connect, carry and disconnect current under normal circuit conditions, and can also connect, carry for a certain time and disconnect current under specified abnormal circuit conditions. In order to protect the safety of the miniature circuit breaker, a corresponding protective casing will be set on the miniature circuit breaker.

[0003] For example, the prior art publication number is CN211182115U, which is an easy-to-assemble miniature circuit breaker shell. The utility model sets positioning holes at the front and rear ends of the shell, inserts fixing pins into the positioning holes for limiting and fixing, and connects adjacent shells together. The spliced ​​shells can be set to be the same shell, and the edge shell and the middle shell are made of the same mold, which greatly improves the utilization rate of the shell. The structure of the spliced ​​shell is more solid, and the product can also be firm and stable when multi-pole splicing.

[0004] However, the above-mentioned prior art still has the following problems when in use: when the existing miniature circuit breaker is installed, it is very inconvenient to insert the line into the input interface and output interface of the shell with a narrow space, and it is not convenient to judge whether the line is connected to the power-on structure in the shell, which greatly reduces the stability of the line operation. Based on this, the utility model provides a miniature circuit breaker shell that is convenient for fixing the line. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a miniature circuit breaker housing that is convenient for fixing the line. By arranging a detachable second clamp block in both the input interface and the output interface on the housing, after the line copper wire is wound around the energizing rod of the second clamp block, the bolt is tightened to push the first clamp block and the second clamp block to fit together, and the second clamp block pushes the limit ring to clamp the line copper wire wound around the energizing rod, thereby avoiding poor contact between the line and the energizing rod. At the same time, the second clamp block and the first clamp block clamp the line, which can further improve the firmness between the line and the housing, so as to solve the problems arising from the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a miniature circuit breaker housing that is convenient for fixing lines, including a shell, an input interface is provided at the top of the shell, an output interface is provided at the bottom of the shell, and fixing components for fixing the lines are provided inside the input interface and the output interface, and the two fixing components include a first clamping block and a second clamping block distributed front and back, and the bottom of the front end of the two second clamping blocks are provided with an installation groove, and a power-on rod for connecting the line is fixedly provided in the installation groove, and the outer wall of the power-on rod is provided with a limiting ring, and the bottom of the rear end of the two first clamping blocks are provided with a circular groove that is compatible with the limiting ring, and the limiting ring is arranged in the circular groove, and the first clamping block and the second clamping block are provided with a wire management groove on the side close to each other for placing the line.

[0007] In a preferred embodiment, the front end top and the front end bottom of the shell are both threadedly connected with bolts, and the rear ends of the two bolts are respectively in contact with the front ends of the two first clamping blocks to push the first clamping block to fit with the second clamping block.

[0008] In a preferred embodiment, the top inner walls and bottom inner walls of the two limit rings are fixed with limit blocks, and the top and bottom outer walls of the two power-carrying poles are opened with limit grooves that are compatible with the limit blocks. The limit blocks are arranged in the limit grooves, and the limit blocks are restricted by the limit grooves to prevent the limit rings from slipping off the power-carrying poles.

[0009] In a preferred embodiment, each cable management groove is provided with an arc-shaped rubber pad, and a plurality of clamping blocks are fixedly provided on the outer wall of the arc-shaped rubber pad. A plurality of clamping slots matching the clamping blocks are opened on the inner wall of each cable management groove, and the plurality of clamping blocks are respectively clamped in the plurality of clamping slots, so as to facilitate the removal of the arc-shaped rubber pad and select arc-shaped rubber pads of different thicknesses for use.

[0010] In a preferred embodiment, sliders are fixed on both sides of the two first clamps, and the inner walls on both sides of the input interface and the output interface are provided with sliding grooves adapted to the sliders. Multiple sliders are respectively arranged in the multiple sliding grooves, and the sliders cooperate with the sliding grooves to improve the stability of the first clamps during movement.

[0011] In a preferred embodiment, the rear ends of the two second clamps are fixed with plug-in blocks, and the inner walls of the rear ends of the input interface and the output interface are provided with slots adapted to the plug-in blocks. The plug-in blocks are inserted into the slots, which can not only improve the stability of the second clamps during installation and use, but also facilitate the removal of the second clamps.

[0012] In a preferred embodiment, the outer walls of the two second clamping blocks away from each other are provided with receiving grooves, and pull rings are movably provided in the receiving grooves to facilitate the installer to take out the two second clamping blocks from the input interface and the output interface respectively.

[0013] Technical effects and advantages of the utility model:

[0014] 1. The utility model provides a detachable second clamp block in both the input interface and the output interface on the shell. After the line copper wire is wound on the power-on rod of the second clamp block, the bolt is screwed to push the first clamp block and the second clamp block to fit together. The second clamp block pushes the limit ring to clamp the line copper wire wound on the power-on rod, thereby avoiding poor contact between the line and the power-on rod. At the same time, the second clamp block and the first clamp block clamp the line, which can further improve the firmness between the line and the shell.

[0015] 2. By setting an arc-shaped rubber pad in each cable management trough, the arc-shaped rubber pad is made of soft material, which can not only clamp the line but also prevent the line from being clamped. The arc-shaped rubber pad is installed in the cable management trough by connecting the card block with the card slot. The installer can choose arc-shaped rubber pads of different thicknesses according to the thickness of the line, which has better applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a bottom view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the shell of the utility model;

[0019] Figure 4 This is a structural diagram of the first clamping block and the second clamping block of the utility model;

[0020] Figure 5 This is a structural diagram of the arc-shaped rubber pad and the wire management groove of the utility model;

[0021] Figure 6 It is a top view of the shell of the utility model.

[0022] The accompanying drawings are marked as follows: 1, housing; 2, input interface; 3, output interface; 4, fixing assembly; 5, cable management groove; 6, bolt; 7, limit block; 8, limit groove; 9, arc-shaped rubber pad; 10, clamping block; 11, clamping groove; 12, slider; 13, slide groove; 14, insert block; 15, slot; 16, storage groove; 17, pull ring;

[0023] 401, first clamping block; 402, second clamping block; 403, mounting groove; 404, power supply rod; 405, limiting ring; 406, circular groove. DETAILED DESCRIPTION

[0024] 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.

[0025] Refer to the instruction manual Figure 1-6 The utility model provides a miniature circuit breaker housing that is convenient for fixing a line, including a shell 1, an input interface 2 is provided at the top of the shell 1, an output interface 3 is provided at the bottom of the shell 1, and a fixing component 4 for fixing the line is provided inside the input interface 2 and the output interface 3. The two fixing components 4 include a first clamping block 401 and a second clamping block 402 distributed front and back, and the bottom of the front end of the two second clamping blocks 402 are provided with a mounting groove 403, and a power rod 404 for connecting the line is fixedly provided in the mounting groove 403. It is worth noting that the power rod 404 passes through the second clamping block 402 and is connected to the power-on mechanism in the shell;

[0026] The outer wall of the power rod 404 is sleeved with a limit ring 405, and the bottom of the rear end of the two first clamping blocks 401 is provided with a circular groove 406 adapted to the limit ring 405, and the limit ring 405 is arranged in the circular groove 406. The first clamping block 401 and the second clamping block 402 are close to each other. The side is provided with a wire management groove 5 for placing the line, and the front end top and the front end bottom of the housing 1 are threadedly connected with bolts 6, and the rear ends of the two bolts 6 are respectively in contact with the front ends of the two first clamping blocks 401, which are used to push the first clamping block 401 and the second clamping block 402 to fit together;

[0027] In order to prevent the limit ring 405 from detaching from the power-carrying rod 404, limit blocks 7 are fixedly provided on the top inner wall and the bottom inner wall of the two limit rings 405, and the top and bottom outer walls of the two power-carrying rods 404 are provided with limit grooves 8 that are compatible with the limit blocks 7. The limit blocks 7 are arranged in the limit grooves 8, and the limit blocks 7 are restricted by the limit grooves 8, which can prevent the limit rings 405 from slipping off the power-carrying rods 404.

[0028] When in use, the installer first takes out the two second clamps 402, then removes the outer skin of the line head, and then winds the copper wire in the line around the power-on rod 404, and then inserts the two second clamps 402 into the input interface 2 and the output interface 3 respectively, and then tightens the bolt 6 to push the first clamp 401 and the second clamp 402 to fit together, and the second clamp 402 pushes the limiting ring 405 to clamp the line copper wire wrapped around the power-on rod 404, so as to avoid poor contact between the line and the power-on rod 404. At the same time, the second clamp 402 and the first clamp 401 clamp the line, which can further improve the firmness between the line and the shell 1.

[0029] Refer to the instruction manual Figure 1-6 Each cable management slot 5 is provided with an arc-shaped rubber pad 9, and a plurality of clamping blocks 10 are fixedly provided on the outer wall of the arc-shaped rubber pad 9. A plurality of clamping grooves 11 adapted to the clamping blocks 10 are opened on the inner wall of each cable management slot 5. The plurality of clamping blocks 10 are respectively clamped in the plurality of clamping grooves 11, so that the arc-shaped rubber pad 9 can be easily disassembled and the arc-shaped rubber pads 9 of different thicknesses can be selected for use;

[0030] In addition, sliders 12 are fixedly provided on both sides of the two first clamping blocks 401, and slide grooves 13 adapted to the sliders 12 are provided on the inner walls on both sides of the input interface 2 and the output interface 3, and multiple sliders 12 are respectively arranged in multiple slide grooves 13, and the sliders 12 cooperate with the slide grooves 13 to improve the stability of the first clamping block 401 when moving, and the outer walls of the two second clamping blocks 402 away from each other are provided with storage grooves 16, and pull rings 17 are movably provided in the storage grooves 16, so that the installer can take out the two second clamping blocks 402 from the input interface 2 and the output interface 3 respectively;

[0031] Moreover, an insert block 14 is fixedly provided at the rear end of the two second clamping blocks 402, and a slot 15 adapted to the insert block 14 is provided on the rear inner wall of the input interface 2 and the rear inner wall of the output interface 3. The insert block 14 is inserted in the slot 15, which can not only improve the stability of the second clamping block 402 during installation and use, but also facilitate the disassembly of the second clamping block 402.

[0032] Wire management grooves 5 are provided on the two first clamping blocks 401 and the two second clamping blocks 402. The arc-shaped rubber pads 9 in the two wire management grooves 5 cooperate to clamp the lines. The arc-shaped rubber pads 9 are made of soft material, which can not only clamp the lines but also prevent the lines from being clamped. The arc-shaped rubber pads 9 are installed in the wire management grooves 5 by clamping the clamping blocks 10 with the clamping grooves 11. The installers can choose arc-shaped rubber pads 9 of different thicknesses for use according to the thickness of the lines, which has better applicability.

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A miniature circuit breaker housing for convenient line fixing, comprising a housing (1), wherein the top of the housing (1) is provided with an input interface (2), and the bottom of the housing (1) is provided with an output interface (3), characterized in that: The input interface (2) and the output interface (3) are both provided with a fixing assembly (4) for fixing the circuit, and the two fixing assemblies (4) each comprise a first clamping block (401) and a second clamping block (402) which are arranged front and back; The bottom of the front end of the two second clamping blocks (402) is provided with an installation groove (403), a power rod (404) for connecting the line is fixedly provided in the installation groove (403), and a limit ring (405) is sleeved on the outer wall of the power rod (404). The bottom of the rear end of the two first clamping blocks (401) is provided with a circular groove (406) adapted to the limit ring (405), and the limit ring (405) is arranged in the circular groove (406). The first clamping block (401) and the second clamping block (402) are both provided with a wire management groove (5) on the side close to each other for placing the line.

2. The miniature circuit breaker housing for convenient line fixing according to claim 1 is characterized in that: Bolts (6) are threadedly connected to the front top and the front bottom of the housing (1), and the rear ends of the two bolts (6) are respectively in contact with the front ends of the two first clamping blocks (401) to push the first clamping block (401) and the second clamping block (402) to fit together.

3. The miniature circuit breaker housing for convenient line fixing according to claim 1 is characterized in that: Limit blocks (7) are fixedly provided on the top inner walls and bottom inner walls of the two limit rings (405), and limit grooves (8) matching the limit blocks (7) are provided on the top and bottom outer walls of the two power-carrying rods (404). The limit blocks (7) are arranged in the limit grooves (8) to prevent the limit rings (405) from detaching from the power-carrying rods (404).

4. The miniature circuit breaker housing for convenient line fixing according to claim 1 is characterized in that: Each cable management slot (5) is provided with an arc-shaped rubber pad (9), a plurality of clamping blocks (10) are fixedly provided on the outer wall of the arc-shaped rubber pad (9), a plurality of clamping grooves (11) adapted to the clamping blocks (10) are provided on the inner wall of each cable management slot (5), and the plurality of clamping blocks (10) are respectively clamped in the plurality of clamping grooves (11), so that the arc-shaped rubber pad (9) is easily disassembled.

5. The miniature circuit breaker housing for convenient line fixing according to claim 1, characterized in that: Slide blocks (12) are fixedly provided on both sides of the two first clamping blocks (401); inner walls on both sides of the input interface (2) and the output interface (3) are provided with slide grooves (13) adapted to the slide blocks (12); a plurality of slide blocks (12) are respectively arranged in a plurality of slide grooves (13), thereby improving the stability of the first clamping blocks (401) when moving.

6. The miniature circuit breaker housing for convenient line fixing according to claim 1, characterized in that: An insert block (14) is fixedly provided at the rear ends of the two second clamping blocks (402); a slot (15) adapted to the insert block (14) is provided on the rear inner wall of the input interface (2) and the rear inner wall of the output interface (3); the insert block (14) is inserted into the slot (15), so as to facilitate the removal of the second clamping blocks (402).

7. The miniature circuit breaker housing for convenient line fixing according to claim 1, characterized in that: The outer walls of the two second clamping blocks (402) on the side away from each other are each provided with a receiving groove (16), and a pull ring (17) is movably provided in the receiving groove (16) to facilitate the disassembly of the second clamping blocks (402).

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