Power supply automatic change-over switch

Abstract

The utility model relates to a power supply automatic change-over switch, which is provided with a power management unit, a driving unit and a power supply switching unit. The driving unit is used for driving a motor of the driving unit to sequentially drive a first rotating disc, a second rotating disc and a cam arranged on a crankshaft of the power supply switching unit to rotate so as to switch the connection between load equipment and a frequently-used power supply or a standby power supply, and a neutral position is arranged in the switching process of the frequently-used power supply and the standby power supply. Therefore, the situation that the load equipment is damaged due to power supply crossing or accidental short circuit risks possibly occurring in the power supply switching process is prevented, and the substantial benefits of effectively prolonging the service life of the load equipment and the like are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of power distribution systems, and more particularly to an automatic power switching switch. Background Technology

[0002] Modern life is heavily reliant on electricity supply, especially in industries like healthcare and manufacturing where safety and continuity are paramount and power outages are unacceptable. Electricity typically comes from mains power sources and backup power sources, with appropriate sources selected based on different needs, and automatic transfer switches used to switch between them.

[0003] Existing automatic power transfer switches mainly include a motor, a lever connected to the motor, a circuit breaker connected to the primary power supply, and a circuit breaker connected to the backup power supply. The motor can rotate in either direction. By driving the lever to switch between the primary and backup circuit breakers, the electrical connection to the primary or backup power supply can be selected, achieving the effect of power switching. However, during the switching process between the primary and backup power supplies, existing automatic power transfer switches lack a neutral position design (meaning the switch is in a state where it is not connected to any power source). This can lead to problems such as power crossover or accidental short circuits during power switching, potentially causing damage to the load equipment or even explosions.

[0004] Therefore, considering that existing automatic power switching switches still have the above-mentioned shortcomings in their use and implementation, the inventor, with the help of many years of manufacturing and design experience and knowledge in related fields, and through various ingenious ideas, has created this utility model. Utility Model Content

[0005] This utility model relates to an automatic power transfer switch, the main purpose of which is to provide an automatic power transfer switch with a neutral position during the switching process between the main power supply and the backup power supply, so as to improve the safety of power switching.

[0006] To achieve the above-mentioned objectives, the inventors have devised the following automatic power transfer switch, which includes:

[0007] A switch body, within which are provided an adjacent first accommodating space and a second accommodating space, the second accommodating space being divided into multiple sections by multiple partitions;

[0008] A power management unit is assembled on the switch body. The power management unit is equipped with a control module, a switching module and a power supply module. The switching module includes a switching switch and a linkage rod assembled with the switching switch. The switching switch of the switching module is communicatively connected to the power supply module.

[0009] A drive unit is disposed in the first accommodating space of the switch body. The drive unit includes a motor, a first cover, a drive shaft, a first turntable, an elastic element, a second turntable, and a second cover. The first cover and the second cover are joined to form a space. The drive shaft, the first turntable, the elastic element, and the second turntable are accommodated in the space where the first cover and the second cover are joined. The motor is communicatively connected to the control module of the power management unit and electrically connected to the power supply module of the power management unit. A first through hole is provided in the first cover, through which the motor's shaft passes and is assembled with the drive shaft. The drive shaft has multiple first ratchet teeth formed on its circumference. The first turntable has a first shaft hole at its center. The first turntable forms opposing first end faces and second end faces, and a first set of vertical rings and a second set of vertical rings are formed on the first end face and the second end face of the first turntable, respectively. Multiple second ratchet teeth are formed on the wall of the annular hole of the first set of vertical rings. The multiple second ratchet teeth mesh with the multiple first ratchet teeth provided on the circumference of the drive shaft. Two opposing, curved first flanges are formed on the circumference of the first turntable. One end of the elastic member is assembled with the second set of vertical rings of the first turntable. A second shaft hole is provided at the center of the second turntable. The second turntable forms opposing first end faces and second set of vertical rings. The second turntable has two end faces, and a third set of vertical rings is formed on the first end face of the second turntable. The elastic element is accommodated in the annular hole of the third set of vertical rings. The other end of the elastic element is assembled with the third set of vertical rings. Two opposing curved second flanges are formed on the peripheral wall of the third set of vertical rings, and a stop portion is formed at the end of the curved second flanges. A cam portion is formed on the second end face of the second turntable, and a transmission portion is provided at the center of the end face of the cam portion. The second cover has a second through hole, and the transmission portion of the second turntable passes through the second through hole of the second cover to the second accommodating space of the switch body. Two [unclear] are distributed around the first through hole on the inner surface of the first cover. A first spring and two second springs are provided. One end of the first spring is formed with an adjacent first guide portion and a first stop portion. One end of the second spring is formed with an adjacent second guide portion and a second stop portion. The first guide portion of the first spring and the second guide portion of the second spring correspond to the positions of the two first flanges provided on the first turntable. The first stop portion of the first spring and the second stop portion of the second spring correspond to the positions of the two second flanges provided on the second turntable. An elastic strip is formed on the second cover. The elastic strip is assembled with the linkage rod of the switching module. The bottom end of the linkage rod abuts against the periphery of the cam portion of the second turntable.

[0010] A power switching unit is disposed in the second accommodating space of the switch body, and includes a crankshaft. One end of the crankshaft is connected to the transmission part of the second turntable. Multiple cams are spaced apart along the length of the crankshaft, and these cams are respectively located in multiple sections of the second accommodating space of the switch body. A follower is disposed in each of the multiple sections of the second accommodating space of the switch body, and a first cavity is provided in each follower. A second cavity and a third cavity are respectively provided on opposite sides of the first cavity of the follower. The multiple cams of the crankshaft are respectively located in the multiple first cavities of the follower. In the first cavity, a protrusion is formed on each of the two cavity walls opposite to the first cavity. The protrusion abuts against the cam of the crankshaft. A first conductor and a second conductor are respectively provided in the second cavity and the third cavity of the follower. An elastic body is provided in each of the second cavity and the third cavity. The two elastic bodies abut against the first conductor and the second conductor. A common power electrode and a spare power electrode are respectively provided in multiple intervals of the second accommodating space. The common power electrode is in contact with or separates from the first conductor. The spare power electrode is in contact with or separates from the second conductor.

[0011] As described above, in the automatic power switching switch, the end face of the cam portion of the second turntable of the drive unit is provided with a magnetic body on each side of the transmission part, and the inner surface of the second cover is provided with a sensor on each side of the second through hole. The two sensors correspond to the positions of the two magnetic bodies provided on the second turntable, and the two sensors are communicatively connected to the control module of the power management unit.

[0012] As described above, in the automatic power switching switch, the drive unit has a first groove on the second set of vertical rings of the first turntable, one end of the elastic member is embedded in the first groove, and the second turntable has a second groove on the third set of vertical rings, the other end of the elastic member is embedded in the second groove.

[0013] As described above, the automatic power switch has an elongated slot-shaped opening on one side of the switch body. A notch is formed on one side of the first and second covers of the drive unit. The notch corresponds to the position and shape of the opening of the switch body. The automatic power switch also includes a toggle switch with a set of vertical holes. The walls of the vertical holes are formed with multiple fifth ratchet teeth. The first set of vertical rings on the first turntable has multiple third ratchet teeth. The multiple third ratchet teeth mesh with the multiple fifth ratchet teeth in the vertical holes of the toggle switch. A lever is formed on one side of the toggle switch. The lever extends outward from the opening of the switch body through the notch in the first and second covers.

[0014] As described above, in the automatic power switching switch, a range is formed on the inner surface of the first cover between the first through hole and the first and second springs surrounding the first through hole. Two opposing third springs are provided in the range. Multiple fourth ratchet teeth are formed on the side of the multiple third ratchet teeth provided in the first set of vertical rings of the first turntable. The multiple fourth ratchet teeth abut against and limit the two third springs provided on the inner surface of the first cover.

[0015] In the power automatic transfer switch described above, the control module of the power management unit is a programmable logic controller.

[0016] The power automatic transfer switch described above is wherein the switch body is composed of two mating housings.

[0017] Therefore, when the power management unit detects an interruption in the main power supply, it drives the motor of the drive unit to sequentially rotate the first turntable, the second turntable, and the cam on the crankshaft of the power switching unit to switch the connection between the load equipment and the main power supply or the backup power supply. This utility model has a neutral position in the process of switching between the main power supply and the backup power supply, thereby preventing damage to the load equipment due to the risk of power crossover or accidental short circuit that may occur during the power switching process. Accordingly, it achieves substantial benefits such as effectively improving the service life of the load equipment. Attached Figure Description

[0018] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0019] Figure 1 This is a perspective view of the present utility model;

[0020] Figure 2 This is an exploded perspective view of the present invention;

[0021] Figure 3 This is a partially enlarged exploded perspective view (I) of the present invention;

[0022] Figure 4 This is a partially enlarged exploded perspective view (II) of the present invention;

[0023] Figure 5 This is a cross-sectional view (a) of the present invention;

[0024] Figure 6 This is a cross-sectional view (II) of the present invention;

[0025] Figure 7 This is a cross-sectional view (iii) of the present invention;

[0026] Figure 8 This is a cross-sectional view (fourth) of the present invention;

[0027] Figure 9 This is a diagram showing the usage state of this utility model (I);

[0028] Figure 10 This is a diagram showing the usage state of this utility model (II);

[0029] Figure 11 This is a diagram showing the usage state of this utility model (III);

[0030] Figure 12 This is a diagram showing the usage state of this utility model (IV);

[0031] Figure 13 This is a schematic diagram of the power switching state of this utility model.

[0032] Explanation of reference numerals in the attached figures

[0033] 1. Switch body; 11. Housing;

[0034] 12. First accommodating space; 13. Second accommodating space;

[0035] 131. Interval; 14. Divider;

[0036] 15. Opening; 2. Power management unit;

[0037] 21. Control module; 22. Switching module;

[0038] 221. Switch; 222. Linkage rod;

[0039] 23: Power supply module; 3. Drive unit;

[0040] 31. Motor; 311. Shaft;

[0041] 32. First cover; 321. First through hole;

[0042] 322. First shrapnel; 323. Second shrapnel;

[0043] 324. First guide section; 325. First stop section;

[0044] 326. Second guide section; 327. Second stop section;

[0045] 328. Third spring clip; 33. Hand lever;

[0046] 331. Assembly hole; 332. Fifth ratchet tooth;

[0047] 333. Lever; 34. Drive shaft;

[0048] 341. First ratchet; 35. First turntable;

[0049] 351. First shaft hole; 352. First set of vertical rings;

[0050] 353. Second set of vertical rings; 354. Second ratchet;

[0051] 355. Third ratchet; 356. First flange;

[0052] 357. First groove; 358. Fourth ratchet;

[0053] 36. Elastic element; 37. Second turntable;

[0054] 371. Second shaft hole; 372. Third set of vertical rings;

[0055] 373. Second groove; 374. Second flange;

[0056] 3741. Stop section; 375. Cam section;

[0057] 376. Transmission unit; 377. Magnetic body;

[0058] 38. Second cover; 381. Second through hole;

[0059] 382. Sensing element; 383. Elastic strip;

[0060] 39. Notch; 4. Power switching unit;

[0061] 41. Crankshaft; 411. Cam;

[0062] 42. Driven component; 421. First cavity;

[0063] 422. Second cavity; 423. Third cavity;

[0064] 424. Bump; 43. First conductor;

[0065] 44. Second conductor; 45. Elastic body;

[0066] 46. ​​Commonly used power supply electrodes; 47. Spare power supply electrodes. Detailed Implementation

[0067] The details of this utility model can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of this utility model described herein are for illustrative purposes only and should not be construed as limiting the utility model in any way. Under the teachings of this utility model, those skilled in the art can conceive of any possible modifications based on this utility model, and these should all be considered to fall within the scope of this utility model.

[0068] Unless otherwise defined, the directions such as up, down, left, and right mentioned in this document refer to those shown in this utility model. Figure 1 The directions of up, down, left, and right are used as a reference, and will be explained here.

[0069] To provide a more complete and clear disclosure of the technical means and effects of this utility model, the following detailed description is provided, along with the accompanying drawings and reference numerals:

[0070] First, please refer to Figure 1 , Figure 2 As shown, this is the automatic power switching switch of this utility model, which mainly includes:

[0071] A switch body 1 is formed by two housings 11 joined together, and a first accommodating space 12 and a second accommodating space 13 are provided adjacently within the switch body 1. The second accommodating space 13 is further divided into multiple intervals 131 by multiple partitions 14. In addition, a long slot-shaped opening 15 is provided in one of the housings 11 of the switch body 1.

[0072] A power management unit 2 is assembled in the switch body 1 to detect whether the power supply of the main power supply is interrupted. The power management unit 2 is equipped with a control module 21, which is a programmable logic controller (PLC). The power management unit 2 is equipped with a switching module 22, which includes a switching switch 221 and a linkage rod 222 assembled with the switching switch 221. In addition, the power management unit 2 is equipped with a power supply module 23, which is communicatively connected to the switching switch 221 of the switching module 22.

[0073] Please refer to Drive Unit 3 as well. Figure 3 , Figure 4As shown, the first accommodating space 12 of the switch body 1 includes a motor 31, a first cover 32, a lever 33, a drive shaft 34, a first turntable 35, an elastic element 36, a second turntable 37, and a second cover 38. The lever 33, the drive shaft 34, the first turntable 35, the elastic element 36, and the second turntable 37 are housed in the space formed by the first cover 32 and the second cover 38. The elastic element 36 is a disc spring, and a notch 39 is provided on one side of the mating first cover 32 and the second cover 38, corresponding to the position of the elongated slot-shaped opening 15 provided on the housing 11 of the switch body 1, so that the motor 31 can communicate with the control module 21 of the power management unit 2. The motor 31's shaft 311 passes through the first through hole 321 in the center of the first cover 32 and is electrically connected to the power supply module 23 of the power management unit 2. The shaft 311 of the motor 31 passes through the first through hole 321 to be assembled with the drive shaft 34. The drive shaft 34 has multiple first ratchet teeth 341 formed on its circumference. The first turntable 35 has a first shaft hole 351 in the center. The first turntable 35 forms a first end face and a second end face opposite to each other on its left and right sides. A first set of vertical rings 352 and a second set of vertical rings 353 are respectively formed on the first end face and the second end face of the first turntable 35. The ring holes of the first set of vertical rings 352 and the second set of vertical rings 353 are concentrically arranged with the first shaft hole 351. Please refer to the following: Figure 5 As shown, the first set of vertical rings 352 has multiple second ratchet teeth 354 formed on the wall of its annular hole to mesh with multiple first ratchet teeth 341 provided on the periphery of the drive shaft 34. Multiple third ratchet teeth 355 are formed on the periphery of the first set of vertical rings 352, and a fourth ratchet tooth 358 is formed next to each third ratchet tooth 355 at intervals of one tooth pitch. Two opposing, curved first flanges 356 are formed on the periphery of the first turntable 35, with the outer diameter of the curved first flanges 356 gradually increasing from small to large. A first groove 357 is provided on the second set of vertical rings 353 to allow... One end of the elastic element 36 is embedded in the first groove 357. A second shaft hole 371 is provided at the center of the second turntable 37. The second turntable 37 forms a first end face and a second end face opposite to the left and right. A third set of vertical rings 372 is formed on the first end face of the second turntable 37. The annular holes of the third set of vertical rings 372 are concentrically arranged with the second shaft hole 371. The elastic element 36 is accommodated in the annular holes of the third set of vertical rings 372. A second groove 373 is provided in the third set of vertical rings 372, so that the other end of the elastic element 36 is embedded in the second groove 373. Please refer to the following: Figure 6As shown, two opposing curved second flanges 374 are formed on the peripheral wall of the third set of vertical rings 372. The outer diameter of the curved second flanges 374 gradually increases from small to large, forming a stop portion 3741 at the end. A cam portion 375 is formed on the second end face of the second turntable 37, and a transmission portion 376 is provided at the center of the end face of the cam portion 375. The transmission portion 376 is concentrically provided with the second shaft hole 371. A magnetic body 377 is provided on each side of the transmission portion 376 on the end face of the cam portion 375. In addition, a second through hole 381 is provided at the center of the second cover 38. The transmission portion 376 of the second turntable 37 passes through the second through hole 381 of the second cover 38 to the second receiving space 13 of the switch body 1. Please refer to the following: Figure 7 As shown, a sensor 382 is provided on each side of the second through hole 381 on the inner surface of the second cover 38 to sense the positions of the two magnetic bodies 377 on the second turntable 37, and to enable the two sensors 382 to communicate with the control module 21 of the power management unit 2. In addition, an elastic strip 383 is formed at the upper end of the second cover 38. The elastic strip 383 is assembled with the linkage rod 222 of the power management unit 2, and the bottom end of the linkage rod 222 is aligned with the periphery of the cam portion 375 of the second turntable 37. Two opposing first spring pieces 322 and two opposing second spring pieces 323 are distributed around the first through hole 321 on the inner surface of the first cover 32. One end of each first spring piece 322 has an adjacent first guide portion 324 and a first stop portion 325. Similarly, one end of each second spring piece 323 has an adjacent second guide portion 326 and a second stop portion 327. The first guide portion 324 of the first spring piece 322 and the second guide portion 326 of the second spring piece 323 respectively contact the first through hole 321. The two first flanges 356 on the disc 35 are positioned opposite each other. Additionally, the first stop 325 of the first spring piece 322 and the second stop 327 of the second spring piece 323 are respectively positioned opposite the two second flanges 374 on the second turntable 37. An area is formed on the inner surface of the first cover 32 between the first through hole 321 and the first spring piece 322 and the second spring piece 323 surrounding the first through hole 321. Two opposing third spring pieces 328 are provided in this area. Furthermore, a set of vertical holes 331 are provided on the lever 33. Furthermore, multiple fifth ratchet teeth 332 are formed on the wall of the set of upright holes 331 to engage with multiple third ratchet teeth 355 provided on the periphery of the first set of upright rings 352 of the first turntable 35. The fourth ratchet teeth 358 provided on the side of the third ratchet teeth 355 can abut against and limit the two third spring pieces 328 provided on the inner surface of the first cover 32. The lever 333 formed on one side of the hand lever 33 extends outward through the long slot-shaped opening 15 of the housing 11 of the switch body 1 through the notch 39 provided on the side of the first cover 32 and the second cover 38.

[0074] A power switching unit 4 is disposed in the second accommodating space 13 of the switch body 1. It includes a crankshaft 41, one end of which is connected to the transmission part 376 of the second turntable 37. Multiple cams 411 are spaced along the length of the crankshaft 41, and these cams 411 are located in multiple intervals 131 of the second accommodating space 13 of the switch body 1. A follower 42 is disposed in each of the multiple intervals 131 of the second accommodating space 13 of the switch body 1. Each follower 42 has a first cavity 421, and a second cavity 422 and a third cavity 423 are respectively disposed on opposite sides of the first cavity 421. (Please refer to the attached document.) Figure 8 As shown, multiple cams 411 of the crankshaft 41 are respectively located in the first cavities 421 of multiple followers 42. A protrusion 424 is formed on each of the two cavity walls of the first cavity 421 to contact the cams 411 of the crankshaft 41. A first conductor 43 and a second conductor 44 are respectively provided in the second cavity 422 and the third cavity 423 of the followers 42. An elastic body 45 is provided in each of the second cavity 422 and the third cavity 423 to abut against the first conductor 43 and the second conductor 44. The elastic body 45 is a compression spring. In addition, a common power electrode 46 and a spare power electrode 47 are respectively provided in each interval 131 of the second accommodating space 13. The two ends of the common power electrode 46 are in contact with or separate from the two ends of the first conductor 43. The two ends of the spare power electrode 47 are in contact with or separate from the two ends of the second conductor 44.

[0075] Accordingly, when the main power supply to the load device 5 is interrupted, the power management unit 2 will detect the interruption in real time. At this time, the control module 21 of the power management unit 2 will drive the motor 31 of the drive unit 3 to operate on the backup power supply, and drive the transmission shaft 34 associated with the motor 31 to rotate. Then, the transmission shaft 34, through the engagement of its first ratchet 341 with the second ratchet 354 of the first turntable 35, drives the first turntable 35 to rotate. Subsequently, the first turntable 35 drives the elastic element 36 associated with it to retract and store energy. Please refer to [further details]. Figure 9As shown, when the first turntable 35 rotates, its two arc-shaped first flanges 356 gradually open through the first guide portions 324 of the two first spring pieces 322 provided on the inner surface of the first cover 32, so that the stop portions 3741 of the two second flanges 374 of the second turntable 37 gradually disengage from the first stop portions 325 provided on the two first spring pieces 322. When the first stop portions 325 of the two first spring pieces 322 are completely disengaged from the second flanges 374 of the second turntable 37, the elastic member 36 can release its winding force to drive the second turntable 37 to rotate. When the second turntable 37 rotates 90 degrees, the stop portions 3741 of its two second flanges 374 will be stopped by the second stop portions 327 of the two second spring pieces 323, and the rotation will stop.

[0076] Please refer to the following when the second turntable 37 rotates 90 degrees. Figure 13 As shown in part (A), the crankshaft 41 and its cam 411 of the power switching unit 4, which is assembled with the transmission part 376 of the second turntable 37, rotate 90 degrees. This causes the first conductor 43, which was originally in contact with the common power electrode 46, to rotate 90 degrees after the crankshaft 41 and its cam 411 have rotated. Please refer to the attached document. Figure 13 As shown in section (B), the cam 411 of the crankshaft 41 simultaneously pushes against the first conductor 43 and the second conductor 44, causing the first conductor 43, which was originally in contact with the normal power electrode 46, to disengage from the normal power electrode 46. At this time, the first conductor 43 and the second conductor 44 are not in contact with the normal power electrode 46 and the backup power electrode 47, thus putting the load device 5 in a completely de-energized state. As the motor 31 of the drive unit 3 continuously drives the first turntable 35 to rotate, the elastic element 36 associated with the first turntable 35 is wound up to store energy. When the first turntable 35 rotates, its two arc-shaped first flanges 356, through the second guide portions 326 of the two second spring pieces 323 provided on the inner surface of the first cover 32, gradually open the two second spring pieces 323, causing the stop portions 3741 of the two second flanges 374 of the second turntable 37 to gradually disengage from the second stops 327 provided on the two second spring pieces 323. When the second flanges 374 of the second turntable 37 are completely disengaged from the second stops 327 of the two second spring pieces 323, the elastic element 36 can release its winding force, causing the second turntable 37 to rotate 90 degrees again. Please refer to the following: Figure 13 As shown in section (C), at this time, the crankshaft 41 and its cam 411 of the power switching unit 4, which is assembled with the second turntable 37, also rotate 90 degrees (totaling 180 degrees), causing the cam 411 of the crankshaft 41 to release its pushing force on the second conductor 44. At this time, the second conductor 44 is pushed by the elastic body 45 in contact with it and feeds towards the backup power electrode 47, so that the two ends of the second conductor 44 contact the two ends of the backup power electrode 47 (e.g., Figure 10 As shown, the circuit between the backup power supply and the load device 5 is connected, so that the load device 5 can be restarted via the backup power supply.

[0077] Furthermore, please refer to the following when the second turntable 37 rotates 180 degrees. Figure 11 As shown, the cam 375 of the second turntable 37 pushes the linkage 222 of the power management unit 2, which is in contact with its periphery, upward, causing the switch 221 associated with the linkage 222 to be flipped upward. This pre-switches the power supplied by the control module 21 of the power management unit 2 to the motor 31 of the drive unit 3 to the normal power supply. Thus, when the power management unit 2 detects that the normal power supply has been restored, the control module 21 can supply the normal power supply to the motor 31 of the drive unit 3, causing the motor 31 to drive the first turntable 35 and the second turntable 37 to rotate 90 degrees via the transmission shaft 34. Please refer to [further details omitted]. Figure 13 As shown in section (D), the crankshaft 41 and its cam 411 of the power switching unit 4 also rotate 90 degrees (270 degrees in total) so that the cam 411 of the crankshaft 41 simultaneously pushes against the first conductor 43 and the second conductor 44, causing the second conductor 44 to disengage from the backup power electrode 47. Simultaneously, the first conductor 43 and the second conductor 44 are not in contact with the normal power electrode 46 and the backup power electrode 47, thus putting the load device 5 back into a completely de-energized state. As the motor 31 of the drive unit 3 continues to drive the first turntable 35 and the second turntable 37 to rotate 90 degrees, please refer to [further details omitted]. Figure 13 As shown in section (A), the crankshaft 41 and its cam 411 of the power switching unit 4, which is configured with the second turntable 37, rotate synchronously by 90 degrees (360 degrees in total, returning to the origin) to return the crankshaft 41 and its cam 411 to their original position. At this time, the cam 411 of the crankshaft 41 releases its push against the first conductor 43. The first conductor 43 is pushed by the elastic body 45 in contact with it and feeds towards the common power electrode 46 so that the two ends of the first conductor 43 contact the two ends of the common power electrode 46 (please refer to the previous section). Figure 8 As shown), this reconnects the circuit between the main power supply and the load device 5, allowing the load device 5 to operate again using the main power supply. When the circuit between the main power supply and the load device 5 is connected, the cam portion 375 of the second turntable 37 releases its push against the linkage rod 222 of the power management unit 2. At this time, the elastic recovery of the elastic strip 383 provided at the upper end of the second cover 38 pulls the linkage rod 222 downward to reset it, and the switch 221 associated with the linkage rod 222 is flipped downward to switch the power supplied by the control module 21 of the power management unit 2 to the motor 31 of the drive unit 3 to a preset backup power supply, so that the motor 31 can be driven by the backup power supply when the main power supply is interrupted next time.

[0078] It is also worth mentioning that when the second turntable 37 rotates 90 degrees, causing the first conductor 43 of the power switching unit 4 to disconnect from the commonly used power electrode 46, and the load device 5 is in a completely de-energized state, only one of the two magnetic bodies 377 on the second end face of the second turntable 37 and the two sensors 382 on the inner surface of the second cover 38 corresponds to each other. The sensor 382 will transmit the signal of sensing only a single magnetic body 377 to the power management unit 2. The control module 21 of the power management unit 2, according to its internal program settings, determines the current load. When the load device 5 is in a completely de-energized state, and the second turntable 37 rotates 180 degrees, causing the second conductor 44 of the power switching unit 4 to come into contact with the backup power electrode 47, thus connecting the load device 5 to the backup power supply, the two magnetic bodies 377 on the second end face of the second turntable 37 and the two sensors 382 on the inner surface of the second cover 38 are misaligned. The sensors 382 transmit a signal indicating that no magnetic body 377 has been detected to the power management unit 2. The control module 21 of the power management unit 2 then determines the current load device according to its internal loading program settings. When the second turntable 37 rotates 270 degrees, causing the second conductor 44 of the power switching unit 4 to disengage from the backup power electrode 47 and the load device 5 to be completely de-energized again, only one of the two magnetic bodies 377 on the second end face of the second turntable 37 and the two sensors 382 on the inner surface of the second cover 38 will correspond to each other. This signal of sensing only a single magnetic body 377 will be transmitted to the power management unit 2. The control module 21 of the power management unit 2 will determine the current status of the load device 5 according to its internal program settings. When the device is in a completely de-energized state, and the second turntable 37 rotates 360 degrees, bringing the first conductor 43 of the power switching unit 4 into contact with the primary power electrode 46, thus connecting the load device 5 to the primary power supply, the two magnetic bodies 377 on the second end face of the second turntable 37 align with the two sensors 382 on the inner surface of the second cover 38, and transmit the signal from the sensed magnetic bodies 377 to the power management unit 2. The control module 21 of the power management unit 2, according to its internal program settings, determines that the load device 5 is currently connected to the primary power supply. Therefore, if the primary power supply is interrupted and the load device 5 fails to receive backup power, it indicates that the automatic switching function of this invention may be damaged. Please refer to [further details needed]. Figure 12As shown, the user can manually move the lever 33 of the drive unit 3 back and forth, so that the lever 33, through the engagement of its fifth ratchet 332 with the third ratchet 355 of the first turntable 35, drives the first turntable 35 to rotate. Then, the first turntable 35 sequentially drives the elastic element 36, the second turntable 37 and the crankshaft 41 and its cam 411 of the power switching unit 4 to rotate, so as to switch the connection between the load device 5 and the main power supply and the backup power supply. When the user moves the lever 33, the first turntable 35 can be prevented from reversing improperly by the abutting and limiting design of the multiple fourth ratchet 358 of the first turntable 35 and the two third spring pieces 328 provided on the inner surface of the first cover 32.

[0079] The foregoing embodiments or accompanying drawings are not intended to limit the implementation of this utility model. This utility model can set parameters such as the speed or pause time of the drive unit 3 motor 31 in the control module 21 of the power management unit 2 according to the required disconnection time of different load devices 5 from both the main power supply and the backup power supply. This allows the load device 5 to be in a brief, complete power-off state during the switching process of the main power supply or the backup power supply, ensuring that there is no risk of power crossover or accidental short circuit during the power switching process.

[0080] As can be seen from the above structure and implementation method, this utility model has the following advantages:

[0081] 1. The automatic power switching switch of this utility model has a neutral position during the switching process between the main power supply and the backup power supply, so that the load equipment can be in a brief and complete power-off state during the switching, ensuring that there is no risk of power crossover or accidental short circuit during the power switching process, thereby effectively preventing equipment damage caused by power switching.

[0082] 2. The power automatic switching switch of this utility model has a control module in the power management unit. In this way, the motor speed or pause time of the drive unit can be set in the control module according to the required disconnection time of different load devices and the main power supply and backup power supply. This allows different load devices to be in a brief complete power-off state during the power switching process, thereby improving the service life of each load device.

[0083] 3. The power automatic transfer switch of this utility model is equipped with a manual toggle, so that even if the automatic transfer function is abnormal, the connection between the load equipment and the main power supply and the backup power supply can still be switched manually, thereby improving the ease of use.

[0084] In conclusion, the embodiments of this utility model can indeed achieve the expected effects. The specific structure disclosed therein has not only never been seen in similar products, but was also not disclosed before the application, and thus fully complies with the provisions and requirements of the Patent Law.

Claims

1. An automatic power transfer switch, characterized in that, The power automatic switching switch comprises: A switch main body, a first accommodating space and a second accommodating space are arranged adjacent in the switch main body, and the second accommodating space is divided into multiple intervals by multiple partitions; A power management unit is arranged in the switch main body, the power management unit is provided with a control module, a switching module and a power supply module, the switching module comprises a switching switch and a linkage rod arranged with the switching switch, and the switching switch of the switching module is in communication connection with the power supply module; A driving unit is arranged in the first accommodating space of the switch main body. The driving unit comprises a motor, a first cover, a transmission shaft, a first rotating disc, an elastic member, a second rotating disc and a second cover. The first cover and the second cover are combined to form a space. The transmission shaft, the first rotating disc, the elastic member and the second rotating disc are accommodated in the space combined by the first cover and the second cover. The motor is communicatively connected with the control module of the power management unit. The motor is electrically connected with the power supply module of the power management unit. A first through hole is arranged on the first cover. The rotating shaft of the motor passes through the first through hole of the first cover and is arranged with the transmission shaft. The transmission shaft is formed with a plurality of first ratchet teeth on the circumferential side. The first rotating disc is formed with a first shaft hole at the center. The first rotating disc is formed with opposite first and second end faces. A first set of stand rings is arranged on the first end face of the first rotating disc. A second set of stand rings is arranged on the second end face of the first rotating disc. A plurality of second ratchet teeth are arranged on the hole wall of the ring hole of the first set of stand rings. The plurality of second ratchet teeth are engaged with the plurality of first ratchet teeth arranged on the circumferential side of the transmission shaft. Two first flanges in arc shape are arranged on the circumferential side of the first rotating disc. One end of the elastic member is arranged with the second set of stand rings of the first rotating disc. A second shaft hole is arranged at the center of the second rotating disc. The second rotating disc is formed with opposite first and second end faces. A third set of stand rings is arranged on the first end face of the second rotating disc. The elastic member is accommodated in the ring hole of the third set of stand rings. The other end of the elastic member is arranged with the third set of stand rings. Two second flanges in arc shape are arranged on the circumferential wall of the third set of stand rings. A stop portion is arranged at the end of the second flange in arc shape. A cam portion is arranged on the second end face of the second rotating disc. A transmission portion is arranged at the center of the end face of the cam portion. A second through hole is arranged on the second cover. The transmission portion of the second rotating disc passes through the second through hole of the second cover to the second accommodating space of the switch main body. Two first contact springs and two second contact springs are arranged on the inner face of the first cover around the circumferential side of the first through hole. One end of the first contact spring is formed with a first guide portion and a first stop portion adjacent to each other. One end of the second contact spring is formed with a second guide portion and a second stop portion adjacent to each other. The first guide portion of the first contact spring and the second guide portion of the second contact spring correspond to the positions of the two first flanges arranged on the first rotating disc respectively. The first stop portion of the first contact spring and the second stop portion of the second contact spring correspond to the positions of the two second flanges arranged on the second rotating disc respectively. An elastic strip is arranged on the second cover. The elastic strip is arranged with the linkage rod of the switching module. The bottom end of the linkage rod is in contact with the circumferential edge of the cam portion of the second rotating disc. A power switching unit is arranged in the second accommodating space of the switch main body. The power switching unit comprises a crankshaft. One end of the crankshaft is arranged in the transmission part of the second rotating disc. The crankshaft is provided with a plurality of cams along its length. The plurality of cams are arranged in the plurality of intervals of the second accommodating space of the switch main body. A driven member is arranged in each of the plurality of intervals of the second accommodating space of the switch main body. A first accommodating cavity is arranged in the driven member. A second accommodating cavity and a third accommodating cavity are arranged on the opposite sides of the first accommodating cavity of the driven member. The plurality of cams of the crankshaft are arranged in the first accommodating cavities of the plurality of driven members. A protrusion is formed on the opposite walls of the first accommodating cavities. The protrusion is in contact with the cam of the crankshaft. A first conductive body and a second conductive body are arranged in the second accommodating cavity and the third accommodating cavity of the driven member. An elastic body is arranged in each of the second accommodating cavity and the third accommodating cavity. The two elastic bodies are in contact with the first conductive body and the second conductive body, respectively. A normal power supply electrode and a standby power supply electrode are arranged in the plurality of intervals of the second accommodating space. The normal power supply electrode is in contact with or separated from the first conductive body. The standby power supply electrode is in contact with or separated from the second conductive body.

2. The automatic transfer switch of claim 1, wherein, The end face of the cam part of the second rotating disc of the driving unit is provided with a magnetic body on each of the opposite sides of the transmission part. The inner face of the second cover body is provided with a sensing member on each of the opposite sides of the second through hole. The two sensing members are arranged in positions corresponding to the two magnetic bodies of the second rotating disc. The two sensing members are in communication connection with the control module of the power management unit.

3. The automatic transfer switch of claim 1, wherein, The second rotating disc is provided with a first embedded groove on the second set of standing rings of the first rotating disc. One end of the elastic member is embedded in the first embedded groove. The second rotating disc is provided with a second embedded groove on the third set of standing rings. The other end of the elastic member is embedded in the second embedded groove.

4. The automatic transfer switch of claim 1, wherein, One side of the switch main body is provided with a long slot-shaped opening. The first cover body and the second cover body of the driving unit are jointly provided with a notch on one side. The notch corresponds to the position and shape of the opening of the switch main body. The power automatic switching switch comprises a hand shifting member. The hand shifting member is provided with a set of standing holes. The hole wall of the set of standing holes is formed with a plurality of fifth ratchet teeth. The first rotating disc is provided with a plurality of third ratchet teeth on the first set of standing rings. The plurality of third ratchet teeth are engaged with the plurality of fifth ratchet teeth of the set of standing holes of the hand shifting member. A shifting rod is formed on one side of the hand shifting member. The shifting rod extends out of the opening of the switch main body through the notch of the first cover body and the second cover body.

5. The automatic transfer switch of claim 4, wherein the first and second transfer switches are each a single pole, double throw switch. The inner face of the first cover body is formed with an interval between the first through hole and the first elastic sheet and the second elastic sheet surrounding the first through hole. Two opposite third elastic sheets are arranged in the interval. A plurality of fourth ratchet teeth are formed on the side of the plurality of third ratchet teeth of the first set of standing rings of the first rotating disc. The plurality of fourth ratchet teeth are limited by the two third elastic sheets arranged on the inner face of the first cover body.

6. The automatic transfer switch of claim 1, wherein, The control module of the power management unit is a programmable logic controller.

7. The automatic transfer switch of claim 1, wherein The switch main body is composed of two shell seats.

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