A molded case circuit breaker switch reclosing mechanism

Abstract

The application discloses a kind of moulded case circuit breaker switch reclosing mechanism, including circuit breaker and reclosing, reclosing is installed on the outside of circuit breaker;The reclosing includes shell, worm and motor are equipped in shell;Switching assembly includes transmission frame, transmission frame is engaged with worm by being equipped with gear, and the inside of transmission frame is also equipped with electromagnetic coil and transmission shaft;The side of the electromagnetic coil is equipped with first linkage;After the electromagnetic coil is energized, first linkage moves along a side under the action of magnetic force, when worm promotes transmission frame to rotate, promote the transmission shaft to drive the operating mechanism in circuit breaker and operate or operate, and separate from transmission frame by first linkage, to remove the linkage state;Because reclosing is installed on the side of circuit breaker, so that the height of the reclosing of this switch is same with circuit breaker, further solve the problem that the overall height of circuit breaker is too high due to reclosing being installed in circuit breaker.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of switch devices, in particular to a plastic-clad breaker switch reclosing mechanism. BACKGROUND

[0002] The existing electric appliance switch, such as the prior art with the announcement number CN214099547U, has a reclosing structure directly installed on the front of the breaker shell. Although this method can complete the reclosing operation, the overall height of the breaker is high, and the method cannot meet the use occasions where the height of the cabinet is limited.

[0003] The existing reclosing mechanism generally drives the handle to rotate to realize the opening and closing of the breaker through a motor. The motor needs to rotate in two directions for closing and opening, and the control requirement of the motor is high, the cost is high, and the power separation of the motor is not convenient, which affects the normal operation of the handle. SUMMARY

[0004] The application aims to provide a plastic-clad breaker switch reclosing mechanism to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a plastic-clad breaker switch reclosing mechanism, comprising a breaker and a reclosing mechanism, and the reclosing mechanism is installed on the outer side of the breaker; the reclosing mechanism comprises a shell, the shell is provided with a worm gear and a motor for driving the worm gear to rotate; the shell is also provided with an opening and closing assembly; the opening and closing assembly comprises a transmission frame, the transmission frame is engaged with the worm gear through a gear, and the inside of the transmission frame is also provided with an electromagnetic coil and a transmission shaft; one side of the electromagnetic coil is provided with a first linkage member driving the transmission shaft; after the electromagnetic coil is powered, the first linkage member moves along the transmission shaft to one side of the transmission frame under the action of the magnetic force, until the first linkage member and the transmission frame enter the linkage state; when the worm gear drives the transmission frame to rotate, the transmission shaft drives the operating mechanism in the breaker to close or open, and the first linkage member is separated from the transmission frame to release the linkage state.

[0006] As a preferred technical scheme of the application: the other side of the electromagnetic coil is also provided with a second linkage member, and the first linkage member and the second linkage member are both slidingly installed on the transmission shaft, and the first linkage member and the second linkage member are moved towards each other by the electromagnetic coil, until they are connected with the transmission frame, so that the first linkage member and the second linkage member enter the linkage state.

[0007] As a preferred technical scheme of the present application: the inside of the electromagnetic coil is further provided with a spring, and the spring is used to promote the first linkage member and the second linkage member to move away from each other until the first linkage member and the second linkage member are separated from the transmission frame, and the linkage state is released.

[0008] As a preferred technical scheme of the present application: the coil support of the electromagnetic coil is inserted into the insertion slot on the first linkage member and the second linkage member through the insertion of the provided insertion pin, so that the transmission frame drives the first linkage member and the second linkage member to move synchronously with the transmission frame.

[0009] As a preferred technical scheme of the present application: the cross sections of the first linkage member and the second linkage member are polygonal, and the first linkage member and the second linkage member are arranged in the multi-faceted cavity provided on the transmission frame, so as to realize the synchronous operation of the transmission frame and the transmission shaft.

[0010] As a preferred technical scheme of the present application: the middle part of the first linkage member and the second linkage member is provided with a multi-rib hole, and the transmission shaft is connected to the multi-rib hole through the multi-rib provided thereon.

[0011] As a preferred technical scheme of the present application: the inside of the shell is further provided with a sensor, and the sensor is triggered by the trigger block provided on the outer wall surface of the transmission frame, so that the circuit board provided in the inside of the shell controls the motor to stop working.

[0012] As a preferred technical scheme of the present application: the recloser further comprises a shell cover; the facing surfaces of the shell and the shell cover are both provided with an axle pin seat, and the both ends of the transmission frame are rotatably installed in the axle pin seat.

[0013] As a preferred technical scheme of the present application: the inside of the shell is further provided with a power supply, and the shell is further provided with a power taking connector.

[0014] As a preferred technical scheme of the present application: the end of the transmission shaft away from the first linkage member is connected to the operating mechanism through the provided connecting plate.

[0015] By adopting the above technical scheme, the present application has the following beneficial effects: 1. Since the recloser is installed on the side surface of the circuit breaker, the height of the recloser and the circuit breaker is the same, thereby solving the problem that the overall height of the circuit breaker is too high due to the installation of the recloser inside the circuit breaker;

[0016] 2. Since the first linkage is driven into the transmission frame by the electromagnetic coil, the first linkage and the transmission frame enter into linkage state, and since the transmission shaft is linked with the first linkage, when the transmission frame rotates following the worm, the transmission shaft can drive the operating mechanism to close or open; especially, when the first linkage is separated from the transmission frame, the linkage state of the first linkage and the transmission frame is cut off, at this time, the user can manually complete the closing or opening action. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a disassembled structure schematic view of the reclosing and opening circuit breaker of the application.

[0018] Figure 2 It is a connection state schematic view of the internal operating mechanism of the reclosing and opening circuit breaker of the application.

[0019] Figure 3 It is a disassembled structure schematic view of the operating mechanism and the connecting plate of the application.

[0020] Figure 4 It is a side structure schematic view of the reclosing after disassembly of the application.

[0021] Figure 5 It is another side structure schematic view of the reclosing after disassembly of the application.

[0022] Figure 6 It is an internal structure schematic view of the shell of the application.

[0023] Figure 7 It is a structure schematic view of the closing and opening assembly of the application in linkage state.

[0024] Figure 8 It is a structure schematic view of the closing and opening assembly of the application in non-linkage state.

[0025] Figure 9 It is a disassembled structure schematic view of the closing and opening assembly of the application.

[0026] Figure 10 It is a main body structure schematic view of the transmission frame of the application.

[0027] Figure 11 It is a main body structure schematic view of the first linkage of the application.

[0028] Figure 12 It is a main body structure schematic view of the coil support of the electromagnetic coil of the application.

[0029] Figure 13 It is a structure schematic view of the circuit breaker and the reclosing after dissection.

[0030] In the figure: 1, circuit breaker; 2, bolt; 3, reclosing; 31, shell; 32, opening and closing assembly; 320, transmission frame; 321, electromagnetic coil; 322, first linkage; 323, second linkage; 324, spring; 325, trigger block; 326, transmission shaft; 327, gear; 328, plug; 329, polygonal column; 330, polygonal hole; 331, slot; 332, multi-faceted cavity; 33, shell cover; 34, circuit board; 35, sensor; 36, power supply; 37, worm; 38, motor; 39, shaft pin seat; 310, power take-off connector; 311, connecting lug; 4, operating mechanism; 5, connecting plate; 6, pin hole; 7, connecting pin; 8, slot hole. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below with reference to examples illustrated in the accompanying drawings, in which the same or similar elements or elements having the same or similar functions are denoted throughout by the same or similar reference numerals. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "upper surface", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0032] Referring to Figures 1-13 The present application provides an embodiment: a molded case circuit breaker switch reclosing mechanism, comprising a circuit breaker 1 and a reclosing 3, and the reclosing 3 is installed on the outer side of the circuit breaker 1; Specifically, the reclosing 3 is fixed on the outer side of the circuit breaker 1 by connecting the connecting lug 311 on the side of the reclosing 3 with the circuit breaker 1 through the bolt 2. Since the reclosing 3 is installed on the side of the circuit breaker 1, the height of the reclosing of the switch and the circuit breaker is the same, thereby solving the problem of excessive height of the circuit breaker caused by the installation of the reclosing inside the circuit breaker;

[0033] Further, the reclosing device 3 comprises a housing 31, a worm 37 and a motor 38 for driving the worm 37 are arranged in the housing 31; a switching assembly 32 is also arranged in the housing 31; the switching assembly 32 comprises a transmission frame 320, the transmission frame 320 is engaged with the worm 37 through a gear 327, and an electromagnetic coil 321 and a transmission shaft 326 are arranged in the transmission frame 320; a first linkage 322 for driving the transmission shaft 326 is arranged on one side of the electromagnetic coil 321; after the electromagnetic coil 321 is energized, the first linkage 322 moves along the transmission shaft 326 to one side of the transmission frame 320 under the action of magnetic force, until the first linkage 322 and the transmission frame 320 enter the linkage state; when the worm 37 drives the transmission frame 320 to rotate, the transmission shaft 326 drives the operating mechanism 4 in the circuit breaker 1 to close or open, and the first linkage 322 is separated from the transmission frame 320 to release the linkage state.

[0034] As described above, the first linkage 322 is driven into the transmission frame 320 by the electromagnetic coil 321, so that the first linkage 322 and the transmission frame 320 enter the linkage state, and the transmission shaft 326 is linked with the first linkage 322, so that when the transmission frame 320 rotates with the worm 37, the transmission shaft 326 drives the operating mechanism 4 to close or open; especially, when the first linkage 322 is separated from the transmission frame 320, the linkage state of the first linkage 322 and the transmission frame 320 is cut off, and at this time, the user can manually complete the closing or opening action without affecting the linkage state.

[0035] In order to improve the reliability of linkage, refer to Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 、 Figure 11 、 Figure 12The other side of the electromagnetic coil 321 is also provided with a second linkage member 323, and the second linkage member 323 and the first linkage member 322 are both slidably mounted on the transmission shaft 326. The electromagnetic coil 321 causes the first linkage member 322 and the second linkage member 323 to move towards each other until they are connected to the transmission frame 320, so that the first linkage member 322 and the second linkage member 323 enter the linkage state. Based on this, by utilizing the first linkage 322 located on one side of the transmission frame 320 and the second linkage 323 located on the other side of the transmission frame 320, when the transmission frame 320 rotates with the worm gear 37, the transmission shaft 326 has at least two synchronous force points, thereby improving the transmission frame 320 to drive the transmission shaft 326 to rotate reliably, ensuring reliable power output; at the same time, by using two linkages to drive the transmission shaft 326, the transmission shaft 326 can smoothly and reliably complete the power transmission, thus solving the problem of uneven force on the transmission shaft 326 due to a single-sided linkage causing warping or vibration, and thus preventing the transmission shaft 326 from falling off the operating mechanism 4.

[0036] Based on this, such as Figure 7 , Figure 8 , Figure 9 As shown, the electromagnetic coil 321 is internally equipped with a spring 324, which causes the first linkage member 322 and the second linkage member 323 to move in opposite directions until they separate from the transmission frame 320, thus releasing the linkage. Therefore, when the electromagnetic coil is de-energized, the spring 324 causes the first linkage member 322 and the second linkage member 323 to move in opposite directions until they separate from the transmission frame 320, thus re-establishing the linkage. Based on this, the power transmission and power cut-off of this device are simple in structure, require no manual operation, and, in particular, the power cut-off is thorough, without affecting the user's ability to manually perform the closing or opening actions of the operating mechanism 4.

[0037] In summary, this device utilizes the cooperation of two linkage components with the transmission shaft 326, and the transmission frame 320 drives the synchronous rotation of the two linkage components, thereby causing the transmission shaft 326 to drive the operating mechanism 4 to complete the opening or closing action. Therefore, compared with the existing reclosing device, it does not have a complex gear transmission structure, nor does it require precise control of the gear transmission ratio. Moreover, the combined action of the electromagnetic coil 321 and the spring 324 can complete the transmission and disconnection of power. Therefore, compared with the existing technology, this device has a simple structure, lower manufacturing cost, and simpler and more convenient power disconnection and connection, and is more efficient.

[0038] Furthermore, such as Figure 7 , Figure 8 , Figure 9As shown, since the coil support of the electromagnetic coil 321 is inserted into the slot 331 on the first linkage 322 and the second linkage 323 through the plug 328, the transmission frame 320 drives the first linkage 322 and the second linkage 323 to move synchronously with the transmission frame 320, thus, the plug 328 and the slot 331 are matched to reliably and synchronously drive the two linkages to rotate synchronously.

[0039] In the rotating process, to ensure the reliable output of power, the cross sections of the first linkage 322 and the second linkage 323 are polygonal, and the first linkage 322 and the second linkage 323 enter the multi-faceted cavity 332 provided on the transmission frame 320 to realize the synchronous work of the transmission frame 320 and the transmission shaft 326, thus, after the two linkages enter the multi-faceted cavity 332, the two linkages do not slip when the transmission frame 320 rotates, to ensure the reliable output of power.

[0040] Similarly, since the middle parts of the first linkage 322 and the second linkage 323 are provided with the multi-rib hole 330, and the transmission shaft 326 is connected with the multi-rib hole 330 through the multi-rib 329, when the two linkages drive the transmission shaft 326 to rotate, the transmission shaft 326 also does not appear the idling phenomenon, especially, after the multi-rib 329 and the multi-rib hole 330 are matched, the two linkages can be guided to slide on the transmission shaft 326, to facilitate the plug 328 to be smoothly inserted into the slot 331. The multi-faceted cavity 332, the first linkage 322, the second linkage 323, the multi-rib 329 and the multi-rib hole 330 are hexagonal.

[0041] On the basis of the above scheme, as Figure 4 , Figure 5 , Figure 6To avoid the phenomenon of over swing of the opening and closing assembly 32, the shell 31 is further provided with a sensor 35, and the sensor 35 is triggered by the trigger block 325 arranged on the outer wall surface of the transmission frame 320, so that the circuit board 34 arranged in the shell 31 controls the motor 38 to stop working, so that when the sensor 35 detects the trigger block 325, the power supply of the motor 38 is immediately cut off to avoid the phenomenon of over swing of the opening and closing assembly 32; based on this, the service life of the opening and closing assembly 32 can be prolonged while ensuring the normal work of the opening and closing assembly 32; wherein the sensor 35 is preferably a proximity switch, and a magnet or iron sheet is arranged on the trigger block 325, and the magnet or iron sheet is used to trigger the sensor 35, so that the transmission frame 320 and the trigger block 325 can be integrally made of the same material, especially, the transmission frame 320 and the trigger block 325 can be integrally made of insulating plastic material, which can improve the insulation performance and reduce the processing difficulty and processing cost of the transmission frame 320; in addition, the transmission shaft 326 is also made of hard plastic. The control program is integrated in the circuit board 34, when the operating mechanism 4 is tripped, the sensor 35 sends a signal to the circuit board 34, and the circuit board 34 identifies the signal and controls the motor 38 to start or stop; for example, when the circuit board 34 receives the closing signal, the motor 38 is prompted to rotate the opening and closing assembly 32 to make the operating mechanism 4 close, and when the circuit board 34 receives the opening signal, the motor 38 is powered to drive the opening and closing assembly 32 to open the operating mechanism 4. The other control programs of the circuit board 34 can refer to the prior art, so this place will not be repeated.

[0042] In order to ensure the stable and reliable swing of the opening and closing assembly 32, the reclosing device 3 further comprises a shell cover 33; the facing surfaces of the shell 31 and the shell cover 33 are both provided with shaft pin seats 39, and the two ends of the transmission frame 320 are rotatably installed in the shaft pin seats 39, so that the two sides of the transmission frame 320 are located behind the shaft pin seats 39, the transmission frame 320 can rotate in the shaft pin seats 39, which can improve the stability of the opening and closing assembly 32 in the shell 31 and reduce the separation phenomenon of the gear 327 and the worm 37; secondly, the opening and closing assembly 32 will not deviate during rotation, so as to ensure that the transmission shaft 326 on the opening and closing assembly 32 can stably and reliably drive the operating mechanism 4 to complete the opening or closing action. In addition, the shell cover 33 and the shell 31 are both provided with shaft pin seats 39, so that the inner wall surface of the shaft pin seats 39 can limit the movement distance of the two linkage members, thereby ensuring that the electromagnetic coil 321 can accurately and reliably attract the two linkage members into the multi-face cavity 332.

[0043] Further, since the power supply 36 is also arranged in the shell 31, a standby power supply can be provided for the electrical equipment in the opening and closing assembly 32, so that the equipment can also complete corresponding actions in emergency state. Meanwhile, the power supply connector 310 is also arranged on the shell 31, so that the equipment also has a normal power supply. In summary, two power supplies are arranged to further ensure the reliability of the equipment in use.

[0044] In addition, as shown in FIGS. Figure 2 , Figure 3 , and Figure 13 , one end of the transmission shaft 326 away from the first linkage 322 is connected with the operating mechanism 4 through the arranged connecting plate 5. Specifically, the end of the transmission shaft 326 is inserted into the slot hole 8 of the connecting plate 5, the connecting pin 7 of the connecting plate 5 is inserted into the pin hole 6 on the side of the operating mechanism 4, after the connecting pin 7 is connected with the pin hole 6, the connecting pin 7 is fixed in the pin hole 6 by welding or riveting, and meanwhile the cross section of the slot hole 8 is rectangular.

[0045] The embodiments of the present application are described in detail above with reference to the drawings, but the present application is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and still fall within the protection scope of the present application.

Claims

1. A reclosing mechanism for a molded case circuit breaker, characterized in that: The circuit includes a circuit breaker (1) and a recloser (3), wherein the recloser (3) is mounted on the outer side of the circuit breaker (1); the recloser (3) includes a housing (31), wherein a worm gear (37) and a motor (38) for rotating the worm gear (37) are provided inside the housing (31); the housing (31) also includes a circuit breaker opening and closing assembly (32). The opening and closing assembly (32) includes a transmission frame (320), which meshes with the worm gear (37) via a gear (327). The transmission frame (320) also has an electromagnetic coil (321) and a transmission shaft (326) inside. A first linkage member (322) is provided on one side of the electromagnetic coil (321) to drive the transmission shaft (326) in conjunction. After the electromagnetic coil (321) is energized, the first linkage (322) moves along the transmission shaft (326) towards one side of the transmission frame (320) under the action of magnetic force until the first linkage (322) and the transmission frame (320) enter a linkage state. When the worm (37) causes the transmission frame (320) to rotate, it causes the transmission shaft (326) to drive the operating mechanism (4) inside the circuit breaker (1) to perform a closing or opening action, and separates from the transmission frame (320) through the first linkage (322) to release the linkage state; On the other side of the electromagnetic coil (321), a second linkage member (323) is provided, and the second linkage member (323) and the first linkage member (322) are both slidably mounted on the transmission shaft (326). The electromagnetic coil (321) causes the first linkage member (322) and the second linkage member (323) to move towards each other until they are connected to the transmission frame (320), so that the first linkage member (322) and the second linkage member (323) enter the linkage state. The electromagnetic coil (321) is also provided with a spring (324), and the spring (324) is used to cause the first linkage (322) and the second linkage (323) to move in opposite directions until they are separated from the transmission frame (320) and the linkage state is released.

2. The reclosing mechanism for a molded case circuit breaker according to claim 1, characterized in that: After the coil support of the electromagnetic coil (321) is inserted into the slot (331) on the first linkage (322) and the second linkage (323) by the provided pin (328), the transmission frame (320) drives the first linkage (322) and the second linkage (323) to move synchronously with the transmission frame (320).

3. The reclosing mechanism for a molded case circuit breaker according to claim 1, characterized in that: The first linkage (322) and the second linkage (323) are both polygonal in cross-section, and the first linkage (322) and the second linkage (323) enter the multi-faceted cavity (332) provided on the transmission frame (320) to realize the synchronous operation of the transmission frame (320) and the transmission shaft (326).

4. The reclosing mechanism for a molded case circuit breaker according to claim 3, characterized in that: Both the first linkage (322) and the second linkage (323) are provided with a multi-faceted hole (330) in the middle, and the transmission shaft (326) is adapted to the multi-faceted hole (330) through a multi-faceted prism (329).

5. A reclosing mechanism for a molded case circuit breaker according to any one of claims 1-4, characterized in that: The housing (31) is also equipped with a sensor (35), and the sensor (35) is triggered by a trigger block (325) on the outer wall of the transmission frame (320), so that the circuit board (34) provided inside the housing (31) controls the motor (38) to stop working.

6. The reclosing mechanism for a molded case circuit breaker according to claim 5, characterized in that: The reclosing circuit breaker (3) also includes a housing cover (33); the housing (31) and the housing cover (33) are provided with axle pin seats (39) on their opposing surfaces, and the two ends of the transmission frame (320) are rotatably installed in the axle pin seats (39).

7. The reclosing mechanism for a molded case circuit breaker according to claim 1, characterized in that: The housing (31) is also equipped with a power supply (36) and a power connector (310) is also provided on the housing (31).

8. The reclosing mechanism for a molded case circuit breaker according to claim 1, characterized in that: The end of the drive shaft (326) away from the first linkage member (322) is connected to the operating mechanism (4) through a connecting plate (5).

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