Modularized plug-in circuit breaker

Abstract

The invention relates to the technical field of circuit breakers, and discloses a modular plug-in circuit breaker which comprises an insulating base and a wiring shell arranged on the insulating base, a wiring unit is arranged on the wiring shell, and the wiring unit comprises a wiring component and a fixing component which are arranged on the wiring shell; the multi-connection part comprises a plurality of wiring holes formed in the wiring shell, a plurality of wiring grooves formed in the insulating base, a plurality of nuts rotationally arranged in the wiring holes, a screw rod arranged at the lower ends of the nuts, a lifting rod arranged on the screw rod in a threaded mode, and an upper clamping plate arranged at the lower end of the screw rod; by arranging the wiring unit, a worker can perform wiring on a plurality of input lines at the same time during wiring, the plurality of input lines can be disassembled at the same time, the operation is simple and rapid, the module can be plugged and unplugged, and the overall function setting is convenient and simple.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit breakers, and in particular to a modular plug-in circuit breaker. Background Art

[0002] Plug-in circuit breaker is a specially designed circuit breaker with the characteristics of easy installation and replacement. It is usually used in low-voltage electrical systems and equipment. The plug-in design makes it easy to insert and remove from the circuit. It is usually installed on a guide rail or fixed in the junction box of the equipment. Plug-in circuit breakers usually consist of a base and a module. The base is fixed on the electrical equipment or distribution cabinet, and the circuit breaker body is a pluggable module. The modular structure makes the replacement or upgrade of the circuit breaker simple and quick, without major changes to the entire circuit. Like traditional circuit breakers, plug-in circuit breakers are also equipped with electromagnets or thermal triggers to detect current abnormalities and cut off the circuit. The design of the trigger mechanism ensures that the circuit breaker can respond quickly to overload and short circuit conditions to ensure the safety of circuits and equipment.

[0003] In the prior art, this design allows the circuit breaker to be quickly replaced or installed, but the following problems still exist. When wiring the existing plug-in circuit breaker, the staff needs to insert multiple input wires into the specified position, and then install and fix them in turn with a screwdriver to complete the wiring. When the wires need to be removed, they also need to be removed in turn with a screwdriver, and when the input wires are inserted into the wiring holes, they need to be supported by hand to prevent them from falling off, which affects the normal operation of the staff. At the same time, during the design and manufacturing process of conventional integrated diversified functional circuit breakers, conventional existing technical means cannot be thoroughly highly integrated and simplified to reduce the space occupied by the device. The switching control of manual opening and closing and automatic opening and closing is not concise, clear and straightforward. At the same time, in the process of each execution, the convenience is insufficient, and modular fast function switching cannot be adopted to increase and reduce functions. At the same time, the device has a relatively weak adaptability to actual usage scenarios. Summary of the invention

[0004] In view of the problems in the prior art that multiple wiring is required, the manual opening and closing and automatic opening and closing switching control is not concise and clear enough, and the modular function switching is not fast enough, a modular plug-in circuit breaker is proposed.

[0005] The present application provides a modular plug-in circuit breaker, the purpose of which is: by setting a wiring unit, the staff can connect multiple input lines at the same time when wiring, and can remove multiple input lines at the same time, the operation is simple and fast, the module can be plugged in and out, and the overall function setting is convenient and simple. The function can be modularly added according to the needs of different usage scenarios. If the functional module is damaged, the modular circuit board can be replaced, and the replacement can be directly plugged in, which improves the efficiency of maintenance and replacement. At the same time, to a large extent, the maintenance time and material cost of the overall device during use are reduced. By setting a micro-motion identification switch, the integration of manual opening and closing and automatic opening and closing can be fully and concisely integrated. This structural setting can clearly distinguish what control state (manual / automatic) the circuit breaker system is in.

[0006] The technical solution of the present invention is: a modular plug-in circuit breaker, comprising an insulating base, a wiring housing arranged on the insulating base, a wiring unit arranged on the wiring housing, and the wiring unit comprising a wiring component and a fixing component arranged on the wiring housing;

[0007] The multi-connection component includes a plurality of wiring holes provided on the wiring housing, a plurality of wiring slots provided on the insulating base, a plurality of nuts rotatably provided inside the plurality of wiring holes, a screw provided at the lower end of the plurality of nuts, a lifting rod threadedly provided on the screw, an upper clamping plate provided at the lower end of the screw, a limiting slot provided at the lower end of the lifting rod, a limiting plate slidably provided in the limiting slot, a fixing spring provided on the limiting plate, and a lower clamping plate provided at the upper end of the fixing spring;

[0008] A limiting assembly is installed between the lifting rod and the limiting plate, a transmission assembly is installed between the corresponding multiple nuts, a pentagonal groove is opened on the upper ends of the multiple nuts, the lifting rod is in the shape of a "mouth", the bottom of the upper splint and the top of the lower splint are both matching arcs, the lifting rod is located in the wiring groove, and a plug-in assembly and a switching assembly are installed on the wiring housing.

[0009] Furthermore, the limiting assembly includes thread grooves provided on the limiting plate and the side wall of the lifting rod, a fixing rod threadedly arranged in the two thread grooves, and a knob arranged at one end of the fixing rod.

[0010] Furthermore, the transmission assembly includes transmission wheels arranged on a plurality of nuts, and a transmission belt arranged between the corresponding plurality of transmission wheels.

[0011] Furthermore, the fixing component includes square grooves opened on both sides of the inner wall of the lifting rod, two fixing blocks slidably arranged in the square grooves, a telescopic spring arranged between the side walls of the square grooves and the fixing blocks, and a connecting rope arranged at one end of the two fixing blocks. The connecting rope seals and slides through the side walls of the lifting rod, one end of the two fixing blocks is chamfered, and the fixing spring is in a compressed state.

[0012] Furthermore, the plug-in assembly includes a plurality of jacks provided on the side of the wiring housing, plug rods provided in the jacks, and modular functional control terminals provided between the plurality of plug rods.

[0013] Furthermore, the switching component includes a manual handle arranged on the modular function control end, a micro switch base arranged on the wiring housing, a micro identification switch arranged on the micro switch base, and a plug-in communication module arranged on the modular function control end, and a controller is arranged inside the modular function control end.

[0014] Furthermore, a function control panel is provided on the modular function control end, a cover plate is rotatably provided on the modular function control end, and the plug-in communication module is located on the inner side of the cover plate.

[0015] Beneficial effects of the present invention:

[0016] 1. By setting up the wiring unit, the staff can connect multiple input lines at the same time, and when the wires need to be removed, multiple input lines can be removed at the same time without using tools to operate one by one, which reduces the workload and improves work efficiency. At the same time, when one of the input lines needs to be replaced, the single input line can be disassembled and replaced through the limit assembly, which is practical and functional.

[0017] 2. The modular control terminal has a secondary wiring setting inside, which contains a layered control circuit board. During the use of the entire circuit breaker, if the functional module is damaged, the modular circuit board can be replaced by directly plugging and unplugging, which improves the efficiency of maintenance and replacement. At the same time, to a large extent, it reduces the maintenance time and material cost of the entire device during use. The design of this device fully considers the maintenance cost and convenience of later use. Therefore, for faults in some modular areas, if the fault cannot be eliminated in time on site, the local modular functional circuit board can be replaced first, and then the fault analysis can be performed, which improves the convenience of product use.

[0018] 3. By setting the micro-motion identification switch, the integration of manual opening and closing and automatic opening and closing can be completely and concisely integrated. This structural setting can clearly distinguish what control state (manual / automatic) the circuit breaker system is in. As long as the micro-motion identification switch is out of contact with the handle, the automatic opening and closing system is in the closed state. When the micro-motion identification switch is in contact with the handle, the circuit breaker system is in the automatic opening and closing control state. At the same time, this logic setting can avoid the failure to perform normal operations due to the loss of the manual handle when manual opening and closing is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure from a first viewing angle of the present invention;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention with the insulating base removed;

[0021] Figure 3 It is a schematic diagram of the wiring unit structure of the present invention;

[0022] Figure 4 For the present invention Figure 3 Partial sectional plan view;

[0023] Figure 5 For the present invention Figure 4 Schematic diagram of the three-dimensional structure;

[0024] Figure 6 It is a schematic diagram of the internal structure of the wiring housing of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the micro switch base of the present invention;

[0026] Figure 8 For the present invention Figure 1 Schematic diagram of the decomposition structure;

[0027] Fig. 9 The figure is a schematic diagram of the working process of the micro-motion identification switch of the present invention.

[0028] In the figure:

[0029] 1. Insulating base; 2. Wiring shell; 3. Wiring hole; 4. Wiring slot; 5. Nut; 6. Screw; 7. Lifting rod; 8. Upper clamp; 9. Limiting slot; 10. Limiting plate; 11. Fixing spring; 12. Lower clamp; 13. Fixing rod; 14. Knob; 15. Transmission wheel; 16. Transmission belt; 17. Square slot; 18. Fixing block; 19. Telescopic spring; 20. Connecting rope; 21. Insert rod; 22. Modular function control terminal; 23. Manual handle; 24. Micro switch base; 25. Micro identification switch; 26. Plug-in communication module; 27. Function control panel; 28. Cover plate; 29. ​​Socket. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] Example 1, reference Figure 1 - Figure 3 , which is the first embodiment of the present invention, provides a modular plug-in circuit breaker, including an insulating base 1, a wiring housing 2 fixedly mounted on the insulating base 1, a wiring unit mounted on the wiring housing 2, and the wiring unit includes a wiring component and a fixed component mounted on the wiring housing 2; the multiple connection components include a plurality of wiring holes 3 opened on the wiring housing 2, a plurality of wiring slots 4 opened on the insulating base 1, a plurality of nuts 5 rotatably mounted inside the plurality of wiring holes 3, a screw 6 fixedly mounted at the lower end of the plurality of nuts 5, a lifting rod 7 threadedly mounted on the screw 6, and an upper screw 7 rotatably mounted at the lower end of the screw 6. A clamping plate 8, a limiting groove 9 provided at the lower end of the lifting rod 7, a limiting plate 10 slidably installed in the limiting groove 9, a fixing spring 11 fixedly installed on the limiting plate 10, and a lower clamping plate 12 fixedly installed on the upper end of the fixing spring 11; a limiting assembly is installed between the lifting rod 7 and the limiting plate 10, a transmission assembly is installed between the corresponding multiple nuts 5, and a pentagonal groove is provided at the upper ends of the multiple nuts 5. The lifting rod 7 is in the shape of a "mouth", and the bottom of the upper clamping plate 8 and the top of the lower clamping plate 12 are both matching arcs. The lifting rod 7 is located in the wiring groove 4, and the wiring housing 2 is installed with a plug-in assembly and a switching assembly.

[0032] Reference Figure 4 and Figure 5 The limit assembly includes a threaded groove provided on the limit plate 10 and the side wall of the lifting rod 7, a fixed rod 13 threadedly installed in the two threaded grooves, and a knob 14 fixedly installed at one end of the fixed rod 13. The transmission assembly includes a transmission wheel 15 fixedly installed on a plurality of nuts 5, and a transmission belt 16 fixedly sleeved between the corresponding plurality of transmission wheels 15. The fixed component includes a square groove 17 provided on both sides of the inner wall of the lifting rod 7, two fixed blocks 18 slidably installed in the square groove 17, a telescopic spring 19 fixedly installed between the side wall of the square groove 17 and the fixed block 18, and a connecting rope 20 fixedly installed in the middle of one end of the two fixed blocks 18. The connecting rope 20 seals and slides through the side wall of the lifting rod 7. One end of the two fixed blocks 18 is set to be chamfered, and the fixed spring 11 is in a compressed state.

[0033] Specifically, the function of the wiring component is to connect multiple input lines to the plug-in circuit breaker, install the circuit breaker at the designated position and work. After the installer places the ports of the multiple input lines in the lifting rod 7 in the wiring slot 4, the transmission component is used to realize the connection of multiple input lines by turning only one nut 5. At the same time, it is to prevent the input lines in the lifting rod 7 from falling off before the installer turns the nut 5. After the staff places the input line inside the lifting rod 7, by pulling the connecting rope 20, the corresponding two fixing blocks 18 slide inward and release the fixation of the lower clamping plate 12. Because the fixing spring 11 is in a compressed state, the lower clamping plate 12 moves upward under the action of the elastic force of the fixing spring 11. Through the mutual cooperation with the upper clamping plate 8, the input line port is clamped and fixed between the two, preventing the input line from falling off during wiring. Similarly, when the staff needs to take out all the input lines, they only need to turn one of the nuts 5 to complete the removal of all the input lines at the same time, effectively improving the work efficiency of the staff.

[0034] When the staff needs to replace one of the input lines separately during maintenance, they only need to take out the fixing rod 13 on the corresponding lifting rod 7 to complete the removal of one of the input lines. By turning the corresponding knob 14, after the fixing rod 13 is taken out, the fixing rod 13 releases the limit on the limit plate 10, so that the limit plate 10 can slide downward. When the limit plate 10 slides downward, the lower clamping plate 12 is in a loose state. At this time, the staff can easily take out one input line separately and replace it.

[0035] During use, when the installer needs to install the plug-in circuit breaker in a specified circuit, multiple input wires are placed in the middle of the lifting rod 7 in the wiring slot 4, and then the corresponding connecting rope 20 is pulled, so that the connecting rope 20 slides the corresponding two fixing blocks 18 in the square slot 17, and releases the fixed limit of the lower clamping plate 12, so that the lower clamping plate 12 moves upward under the elastic force of the fixing spring 11, and clamps and fixes the corresponding input wire to prevent it from falling off during the wiring process;

[0036] When multiple input lines are clamped and fixed in the corresponding lifting rods 7, the staff only needs to turn one of the nuts 5 so that the nut 5 drives each nut 5 to rotate at the same time through the transmission wheel 15 and the transmission belt 16. During the rotation of the nut 5, the lifting rod 7 is limited by the wiring slot 4, so that the lifting rod 7 cannot rotate with the screw 6. When the screw 6 rotates, it will drive the lifting rod 7 to rise. When the lifting rod 7 rises, it will drive the lower clamping plate 12 at the lower end to move synchronously. When the lower clamping plate 12 and the upper clamping plate 8 move close enough, the input line port is clamped and fixed between the two, and then multiple input lines are connected to the plug-in circuit breaker to complete the wiring. Similarly, when the staff needs to take out the input line, they only need to turn one of the nuts 5 to complete the removal of multiple input lines at the same time;

[0037] When the staff needs to take out and replace one of the input lines, they only need to turn the corresponding knob 14 so that the knob 14 removes the corresponding fixing rod 13 from the lifting rod 7 and the limit plate 10, thereby releasing the fixed limit of the limit plate 10, allowing the limit plate 10 to slide in the vertical direction in the limit groove 9. While sliding, the limit plate 10 releases the force acting on the lower clamping plate 12, so that the lower clamping plate 12 is in a loose state, thereby reducing the clamping force of the lower clamping plate 12 on the input line, and the staff can easily take out the input line and replace it.

[0038] Example 2, reference Figure 1 - Figure 2 as well as Figure 7 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that the plug-in assembly includes a plurality of jacks 29 opened on the side of the wiring housing 2, a plug rod 21 inserted into the jacks 29, and a modular functional control terminal 22 fixedly installed between the plurality of plug rods 21.

[0039] Specifically, the modular function control terminal 22 is installed on the wiring housing 2 in a plug-in manner. A secondary wiring part is arranged inside the modular function control terminal 22. The secondary wiring part can replace the module separately (the module can be plugged in and out), and the overall function setting is convenient and simple. The function can be modularly increased according to the needs of different usage scenarios. The modular function control terminal 22 is provided with a plug-in module for carrier communication. The modular function control terminal 22 is provided with a secondary wiring setting inside, and contains a layered control circuit board. During the use of the entire circuit breaker, if the functional module is damaged, the modular circuit board can be replaced, and the replacement can be directly plugged in, which improves the efficiency of maintenance and replacement. At the same time, to a large extent, the maintenance time and material cost of the overall device during use are reduced. In particular, by adopting a layered circuit board wiring method, the number of secondary wiring and welding can be greatly reduced, thereby greatly improving the wiring and installation efficiency of the circuit board. In addition, a layered modular circuit board design is adopted, which can greatly reduce the user's subsequent use costs. Compared with previous conventional devices, the entire device will not be replaced due to internal local failures (screen display, partial circuit board damage and other related problems), which will generate a large equipment use cost and is not conducive to maintenance and repair. The design of this device fully considers the maintenance cost and convenience of later use. For failures in some modular areas, if the fault cannot be eliminated in time on the spot, the local modular functional circuit board can be replaced first, and then the fault analysis can be performed, which improves the convenience of product use.

[0040] The remaining structures are the same as those of Example 1.

[0041] Example 3, reference Figure 6 - Fig. 9 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the switching assembly includes a manual handle 23 rotatably mounted on the modular function control terminal 22, a micro switch base 24 fixedly mounted on the wiring housing 2, a micro identification switch 25 rotatably mounted on the micro switch base 24, a plug-in communication module 26 mounted on the modular function control terminal 22, and a controller is arranged inside the modular function control terminal 22. A function control panel 27 is arranged on the modular function control terminal 22, a cover plate 28 is rotatably arranged on the modular function control terminal 22, and the plug-in communication module 26 is located on the inner side of the cover plate 28.

[0042] Specifically, the existing circuit breakers are divided into manual opening and closing and automatic control opening and closing. The conventional practice is that in order to ensure that the manual opening and closing and the automatic control opening and closing do not interfere with each other during their respective implementation, they will be independently laid out and installed. During the manual opening and closing process, the automatic control opening and closing must be disconnected independently before the manual opening and closing operation can be fully performed. Avoid conflicts between the two action systems during the implementation process, which may cause damage to the gear transmission structure inside the circuit breaker. This product combines the conventional technical layout that is already available on the market, and is developed and designed based on practical applications. It is designed into a structure that can integrate automatic and manual opening and closing: as shown in the figure below, a micro switch base 24 is provided below the end of the manual handle 23, and a micro identification switch 25 is provided on the micro switch base 24. When the circuit breaker is in the state of automatic opening and closing, the end of the manual handle 23 needs to be in contact with the micro identification switch 25, then the execution system of the entire circuit breaker is in the automatic opening and closing control state. When the manual handle 23 is taken out and out of contact with the micro identification switch 25, the circuit breaker is in the manual opening and closing control state. At this time, the end of the manual handle 23 is correspondingly inserted into the handle rotating shaft hole for rotation to perform manual opening and closing. The technical advantages of this structural design: it can completely and concisely integrate the fusion of manual opening and closing and automatic opening and closing. This structural setting can clearly distinguish the control state (manual / automatic) of the circuit breaker system. As long as the micro-motion identification switch 25 is out of contact with the handle, the automatic opening and closing system is in the closed state. When the micro-motion identification switch 25 is in contact with the handle, the circuit breaker system is in the automatic opening and closing control state. At the same time, this logical setting can avoid the situation where manual opening and closing operations cannot be performed normally due to the loss of the manual handle 23 when manual opening and closing is required.

[0043] The remaining structure is the same as that of Example 2.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A modular plug-in circuit breaker, comprising an insulating base (1), a wiring housing (2) arranged on the insulating base (1), characterized in that: The wiring housing (2) is provided with a wiring unit, and the wiring unit comprises a wiring component and a fixing component arranged on the wiring housing (2); The wiring component comprises a plurality of wiring holes (3) provided on the wiring housing (2), a plurality of wiring slots (4) provided on the insulating base (1), a plurality of nuts (5) rotatably arranged inside the plurality of wiring holes (3), a screw rod (6) arranged at the lower ends of the plurality of nuts (5), a lifting rod (7) threadedly arranged on the screw rod (6), an upper clamping plate (8) arranged at the lower end of the screw rod (6), a limiting slot (9) provided at the lower end of the lifting rod (7), a limiting plate (10) slidably arranged in the limiting slot (9), a fixing spring (11) arranged on the limiting plate (10), and a lower clamping plate (12) arranged at the upper end of the fixing spring (11); A limit assembly is installed between the lifting rod (7) and the limit plate (10), and a transmission assembly is installed between the corresponding multiple nuts (5). The upper ends of the multiple nuts (5) are all provided with pentagonal grooves. The lifting rod (7) is in the shape of a "mouth". The lower side of the upper clamping plate (8) and the upper side of the lower clamping plate (12) are both in matching arc shapes. The lifting rod (7) is located in the wiring slot (4), and a plug-in assembly and a switching assembly are installed on the wiring housing (2).

2. The modular pluggable circuit breaker according to claim 1, characterized in that: The limiting assembly comprises thread grooves formed on the limiting plate (10) and the side wall of the lifting rod (7), a fixing rod (13) threadedly arranged in the two thread grooves, and a knob (14) arranged at one end of the fixing rod (13).

3. The modular pluggable circuit breaker according to claim 1, characterized in that: The transmission assembly comprises transmission wheels (15) arranged on a plurality of nuts (5), and a transmission belt (16) arranged between the corresponding plurality of transmission wheels (15).

4. The modular pluggable circuit breaker according to claim 1, characterized in that: The fixing component comprises a square groove (17) opened on both sides of the inner wall of the lifting rod (7), two fixing blocks (18) slidably arranged in the square groove (17), a telescopic spring (19) arranged between the side wall of the square groove (17) and the fixing block (18), and a connecting rope (20) arranged at one end of the two fixing blocks (18), wherein the connecting rope (20) is sealed and slidably penetrates the side wall of the lifting rod (7), one end of the two fixing blocks (18) is chamfered, and the fixing spring (11) is in a compressed state.

5. The modular pluggable circuit breaker according to claim 1, characterized in that: The plug-in assembly comprises a plurality of plug holes (29) provided on the side of a wiring housing (2), plug rods (21) arranged in the plug holes (29), and modular function control terminals (22) arranged between the plurality of plug rods (21).

6. The modular pluggable circuit breaker according to claim 5, characterized in that: The switching assembly comprises a manual handle (23) arranged on the modular function control end (22), a micro switch base (24) arranged on the wiring housing (2), a micro identification switch (25) arranged on the micro switch base (24), and a plug-in communication module (26) arranged on the modular function control end (22); a controller is arranged inside the modular function control end (22).

7. The modular pluggable circuit breaker according to claim 6, characterized in that: The modular function control end (22) is provided with a function control panel (27), a cover plate (28) is rotatably provided on the modular function control end (22), and the plug-in communication module (26) is located on the inner side of the cover plate (28).

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