Moulded case circuit breaker easy to maintain
By designing the fixing method of clamping mechanism and fastening bolts in the plastic shell circuit breaker, the easy maintenance of the plastic shell circuit breaker is achieved, the problem of difficult maintenance in the existing technology is solved, and the practicality and stability of the product are improved .
Patent Information
- Application Number
- CN202323516468.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-22
- Publication Date
- 2025-02-21
- Estimated Expiration
- 2033-12-22
AI Technical Summary
Most of the existing plastic case circuit breakers are integrated, which are not easy to disassemble and install, resulting in difficulty in repairing internal components when they are damaged, affecting their use.
An easy-to-maintenance plastic shell circuit breaker is designed. The main body and shell of the plastic shell circuit breaker are clamped through the clamping mechanism and fixed with fastening bolts to achieve the convenience of disassembly and easy-to-maintenance.
This design solves the problem of difficulty in repairing internal components when they are damaged, realizes the ease of repair and stability of plastic case circuit breakers, and improves practicality.
Smart Images
Figure CN222514869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of molded case circuit breakers, in particular to an easy-to-maintain molded case circuit breaker. Background Art
[0002] Molded case circuit breakers are also called device-type circuit breakers. All parts are sealed in a plastic casing. Auxiliary contacts, undervoltage releases and shunt releases are mostly modular. Molded case circuit breakers are contacts, arc extinguishing chambers, releases and operating mechanisms all installed in a plastic casing. They are suitable for branch circuit protection switches. Molded case circuit breakers can automatically cut off the current after the current exceeds the trip setting.
[0003] However, most of the existing molded case circuit breakers are of integrated type, which makes it difficult to disassemble and install the molded case circuit breakers. When the internal components are damaged, it is difficult to repair the molded case circuit breakers, which is not conducive to the use of the molded case circuit breakers. Therefore, we propose an easy-to-repair molded case circuit breaker. Utility Model Content
[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an easy-to-maintain molded case circuit breaker. The molded case circuit breaker body and the shell are clamped by a clamping mechanism and then fixed by fastening bolts. It is easy to disassemble and easy to maintain, which solves the problem that it is difficult to repair the molded case circuit breaker when the internal components are damaged. It has high practicality and can effectively solve the problems in the background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an easy-to-maintain molded case circuit breaker comprises a molded case circuit breaker body and a shell;
[0006] Molded case circuit breaker body: There are clamping mechanisms on the left and right sides of the interior, and clamping blocks on the left and right sides of the shell. The clamping mechanisms and the clamping blocks are used together. There are three evenly distributed wiring slots on the upper and lower sides of the molded case circuit breaker body;
[0007] The clamping mechanism includes a clamping slot and an insertion rod. A clamping slot and an installation slot are provided on the left and right sides of the molded case circuit breaker body. A partition is fixedly connected inside the installation slot. A groove is provided at the lower right side of the installation slot. A insertion rod is slidably provided in the clamping slot. The insertion rod passes through the internal through hole of the molded case circuit breaker body and the internal through hole of the partition and is fixedly connected to the left side of the connecting block. A movable rod is slidably provided inside the connecting block. The connecting block is pulled to the lower side of the installation slot to drive the insertion rod and the movable rod to move to the left. The insertion rod is separated from the shell, and the movable rod falls into the groove to limit the insertion rod, and the molded case circuit breaker body and the shell are not clamped; the movable rod is lifted and the connecting block is pushed to the right to drive the movable rod and the insertion rod to move to the right. The insertion rod cooperates with the clamping block to clamp, the partition limits the connecting block, and the molded case circuit breaker body and the shell are clamped.
[0008] Furthermore, the clamping block includes a fixed block and a clamping hole. The fixed blocks are symmetrically installed on both sides of the front end of the shell. A clamping hole is opened inside the lower part of the fixed block. The clamping hole is used in conjunction with the insertion rod. After the shell is placed on the molded case circuit breaker body, the clamping block is inserted into the clamping slot, and the insertion rod is inserted into the internal through hole of the fixed block. The partition limits the connecting block to keep the molded case circuit breaker in a clamped state.
[0009] Furthermore, four evenly distributed through holes are opened on the front side of the molded case circuit breaker body, fastening nuts are arranged inside the through holes, and four evenly distributed fastening bolts are fixedly connected to the front side of the shell. The fastening bolts are used in conjunction with the fastening nuts. After the molded case circuit breaker body and the shell are clamped, the fastening bolts are inserted through the through holes and used in conjunction with the fastening nuts to fix the molded case circuit breaker body and the shell to maintain the stability of the molded case circuit breaker.
[0010] Furthermore, a square groove is provided on the front side of the molded case circuit breaker body, a mounting seat is fixedly installed in the square groove, and a handle is fixedly connected to the front side of the mounting seat for controlling the molded case circuit breaker.
[0011] Furthermore, a second installation groove is opened on the front side of the shell, the square groove corresponds to the second installation groove in front and back, and the front end of the handle passes through the front end of the second installation groove. After the molded case circuit breaker is clamped and fixed, it is convenient to manually control the circuit breaker.
[0012] Furthermore, evenly distributed first mounting holes are provided between the wiring slots on the front side of the molded case circuit breaker body, and two second mounting holes are provided on the upper and lower surfaces of the molded case circuit breaker body, so as to facilitate installation with a wall.
[0013] Compared with the prior art, the beneficial effects of the utility model are: the easy-to-maintain molded case circuit breaker has the following advantages:
[0014] 1. Pull the connecting block to the lower side of the installation groove, drive the plug rod and the movable rod to move to the left, separate the plug rod from the shell, and drop the movable rod into the groove to limit the plug rod. The molded case circuit breaker body and the shell are not clamped. Lift the movable rod and push the connecting block to the right to drive the movable rod and the plug rod to move to the right. The plug rod and the clamping block are clamped together, and the partition limits the connecting block, and the molded case circuit breaker body and the shell are clamped.
[0015] 2. After the shell is placed on the molded case circuit breaker body, the card block is inserted into the card slot, the insertion rod is inserted into the internal through hole of the fixed block, and the partition limits the connection block to keep the molded case circuit breaker in a clamped state.
[0016] 3. After the molded case circuit breaker body and the shell are clamped, insert the fastening bolts through the through holes and use them in conjunction with the fastening nuts to fix the molded case circuit breaker body and the shell to maintain the stability of the molded case circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model.
[0018] Figure 2 It is a schematic diagram of the clamping mechanism of the utility model structure.
[0019] Figure 3 It is a left-side sectional schematic diagram of the structure of the utility model.
[0020] In the figure: 1 molded case circuit breaker body, 2 housing, 3 clamping mechanism, 31 clamping slot, 32 plug rod, 33 mounting slot, 34 partition, 35 movable rod, 36 connecting block, 37 groove, 4 clamping block, 41 fixing block, 42 clamping hole, 5 through hole, 6 fastening bolt, 7 mounting seat, 8 handle, 9 second mounting slot, 10 wiring slot, 11 first mounting hole, 12 second mounting hole. DETAILED DESCRIPTION
[0021] 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.
[0022] See also Figure 1-3 , this embodiment provides a technical solution: an easy-to-maintain molded case circuit breaker includes a molded case circuit breaker body 1 and a housing 2;
[0023] Molded case circuit breaker body 1: a clamping mechanism 3 is provided on the left and right sides of the interior, a clamping block 4 is provided on the left and right sides of the housing 2, the clamping mechanism 3 and the clamping block 4 are used in conjunction with each other, and three evenly distributed wiring slots 10 are provided on both the upper and lower sides of the molded case circuit breaker body 1;
[0024] The clamping mechanism 3 includes a clamping slot 31 and a plug rod 32. The clamping slot 31 and the mounting slot 33 are provided on the left and right sides of the molded case circuit breaker body 1. A partition 34 is fixedly connected to the mounting slot 33. A groove 37 is provided at the lower right side of the mounting slot 33. A plug rod 32 is slidably provided in the clamping slot 31. The plug rod 32 passes through the internal through hole of the molded case circuit breaker body 1 and the internal through hole of the partition 34 and is fixedly connected to the left side of the connecting block 36. A movable rod 35 is slidably provided in the connecting block 36 to pull the connecting block 36. Move to the lower side of the mounting groove 33, drive the insertion rod 32 and the movable rod 35 to move to the left, the insertion rod 32 is separated from the shell 2, and the movable rod 35 falls into the groove 37 to limit the insertion rod 32, and the molded case circuit breaker body 1 and the shell 2 are not clamped; lift the movable rod 35, push the connecting block 36 to the right, drive the movable rod 35 and the insertion rod 32 to move to the right, the insertion rod 32 and the clamping block 4 are clamped together, the partition 34 limits the connecting block 36, and the molded case circuit breaker body 1 and the shell 2 are clamped.
[0025] Among them, the clamping block 4 includes a fixing block 41 and a clamping hole 42. The fixing blocks 41 are symmetrically installed on both sides of the front end of the shell 2. A clamping hole 42 is opened inside the fixing block 41. The clamping hole 42 is used in conjunction with the insertion rod 32. After the shell 2 is placed on the molded case circuit breaker body 1, the clamping block 4 is inserted into the clamping slot 31, and the insertion rod 32 is inserted into the clamping hole 42 inside the fixing block 41. The partition 34 limits the connecting block 36 to keep the molded case circuit breaker in a clamped state. Four evenly distributed through holes 5 are opened on the front side of the molded case circuit breaker body 1. A fastening nut is arranged inside the through hole 5. Four evenly distributed fastening bolts 6 are fixedly connected to the front side of the shell 2. The fastening bolts 6 are used in conjunction with the fastening nuts. After the molded case circuit breaker body 1 and the shell 2 are clamped, the fastening bolts 6 are inserted through the fixing hole 31. The through hole 5 is used in conjunction with the fastening nut to fix the molded case circuit breaker body 1 and the shell 2 to maintain the stability of the molded case circuit breaker. A square groove is provided on the front side of the molded case circuit breaker body 1, and a mounting seat 7 is fixedly installed in the square groove. A handle 8 is fixedly connected to the front side of the mounting seat 7 for controlling the molded case circuit breaker. A mounting groove 2 9 is provided on the front side of the shell 2. The square groove corresponds to the mounting groove 2 9 in front and back positions, and the front end of the handle 8 passes through the front end of the mounting groove 2 9. After the molded case circuit breaker is clamped and fixed, it is convenient to manually control the circuit breaker. Evenly distributed first mounting holes 11 are provided between the wiring grooves 10 on the front side of the molded case circuit breaker body 1, and two second mounting holes 12 are provided on the upper and lower surfaces of the molded case circuit breaker body 1 for easy installation with the wall.
[0026] The working principle of an easily repairable molded case circuit breaker provided by the utility model is as follows: pull the connecting block 36 to the lower side of the mounting groove 33, drive the plug rod 32 and the movable rod 35 to move to the left, the plug rod 32 is separated from the housing 2, and the movable rod 35 falls into the groove 37 to limit the plug rod 32, and the molded case circuit breaker body 1 and the housing 2 are not clamped; lift the movable rod 35, push the connecting block 36 to the right, drive the movable rod 35 and the plug rod 32 to move to the right, the plug rod 32 and the clamping block 4 are clamped, the partition plate 34 limits the connecting block 36, the molded case circuit breaker body 1 and the housing 2 are clamped, and the housing 2 is placed on the molded case circuit breaker body 1, the clamping block 4 is inserted into the clamping groove 31, the inserting rod 32 is inserted into the clamping hole 42 inside the fixing block 41, and the partition 34 limits the connecting block 36 to keep the molded case circuit breaker in a clamped state. After the molded case circuit breaker body 1 and the shell 2 are clamped, the fastening bolt 6 is inserted through the through hole 5 and used in conjunction with the fastening nut to fix the molded case circuit breaker body 1 and the shell 2 to maintain the stability of the molded case circuit breaker. The mounting hole is convenient for installation and coordination with the wall, and is easy to disassemble and repair, which solves the problem of difficulty in repairing the molded case circuit breaker when the internal components are damaged, and has high practicality.
[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. An easy-to-maintain molded case circuit breaker, characterized in that: It comprises a molded case circuit breaker body (1) and a housing (2); A molded case circuit breaker body (1): a clamping mechanism (3) is provided on the left and right sides of the interior, a clamping block (4) is provided on the left and right sides of the housing (2), the clamping mechanism (3) and the clamping block (4) are used in conjunction with each other, and three evenly distributed wiring slots (10) are provided on both the upper and lower sides of the molded case circuit breaker body (1); The clamping mechanism (3) comprises a clamping slot (31) and an insertion rod (32); the clamping slot (31) and the installation slot (33) are provided on the left and right sides of the molded case circuit breaker body (1); a partition plate (34) is fixedly connected to the installation slot (33); a groove (37) is provided at the lower right side of the installation slot (33); an insertion rod (32) is slidably provided in the clamping slot (31); the insertion rod (32) passes through the internal through hole of the molded case circuit breaker body (1) and the internal through hole of the partition plate (34) and is fixedly connected to the left side of the connecting block (36); and a movable rod (35) is slidably provided in the connecting block (36).
2. The easily maintainable molded case circuit breaker according to claim 1, characterized in that: The clamping block (4) comprises a fixing block (41) and a clamping hole (42). The fixing blocks (41) are symmetrically mounted on both sides of the front end of the housing (2). A clamping hole (42) is provided inside the lower part of the fixing block (41). The clamping hole (42) is used in conjunction with the insertion rod (32).
3. The easily maintainable molded case circuit breaker according to claim 1, characterized in that: The front side of the molded case circuit breaker body (1) is provided with four evenly distributed through holes (5), a fastening nut is provided inside the through hole (5), and the front side of the housing (2) is fixedly connected with four evenly distributed fastening bolts (6), which are used in conjunction with the fastening nuts.
4. The easily maintainable molded case circuit breaker according to claim 1, characterized in that: A square groove is provided on the front side of the molded case circuit breaker body (1), a mounting seat (7) is fixedly installed in the square groove, and a handle (8) is fixedly connected to the front side of the mounting seat (7).
5. The easily maintainable molded case circuit breaker according to claim 4, characterized in that: The front side of the shell (2) is provided with a second installation groove (9), the square groove corresponds to the position of the second installation groove (9) in front and back, and the front end of the handle (8) passes through the front end of the second installation groove (9).
6. The easily maintainable molded case circuit breaker according to claim 1, characterized in that: The molded case circuit breaker body (1) has evenly distributed first mounting holes (11) between the wiring slots (10) on the front side thereof, and two second mounting holes (12) are provided on both upper and lower side surfaces of the molded case circuit breaker body (1).