Change-over switch electric appliance

Abstract

The utility model discloses a change-over switch electric appliance, which comprises a mounting rack, a first power supply miniature circuit breaker, a second power supply miniature circuit breaker, a change-over mechanism, a first rocker arm and a second rocker arm, the first rocker arm is connected with a handle of the first power supply miniature circuit breaker, and the second rocker arm is connected with a handle of the second power supply miniature circuit breaker; the switching mechanism comprises a driving motor, a rotating disc, a first linkage piece and a second linkage piece, a driving shaft of the driving motor is connected with the rotating disc, the first linkage piece is in linkage with the first rocker arm and the rotating disc, the second linkage piece is in linkage with the second rocker arm and the rotating disc, and the driving motor drives the rotating disc to rotate; and the turntable drives the first linkage piece and / or the second linkage piece to move so as to drive the first power supply miniature circuit breaker to be switched on or switched off and drive the second power supply miniature circuit breaker to be switched on or switched off. The transmission mechanism is simple, electrical interlocking and mechanical interlocking are achieved, and the reliable automatic change-over switch function can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a conversion switch electrical appliance. Background Art

[0002] Automatic transfer switch is widely used in the most stringent power distribution and emergency lighting distribution system requirements in industry, medical treatment, post and telecommunications, petroleum, coal mines, metallurgy, railways, computer centers, ships, military facilities, highways, airports, fire protection, civil buildings and other places. It is a common low-voltage electrical appliance. Its working principle is that when two power supplies (normal power supply and backup power supply) are detected to have deviations (overvoltage, undervoltage, phase loss, etc.) in one power supply, one or several load circuits are automatically switched from the power supply to the other power supply to ensure normal power supply at the load end. The current automatic transfer switch switching structure usually includes gears, slides, rocker rods and other components, which are large in size and complex in structure. The complex structure is easy to increase the failure rate and affect the service life of the automatic transfer switch. Utility Model Content

[0003] The utility model solves the technical problem by adopting the following technical solution: constructing a switching electrical appliance, including a mounting frame, a first power supply miniature circuit breaker, a second power supply miniature circuit breaker, a switching mechanism, a first rocker arm, and a second rocker arm;

[0004] The first power supply miniature circuit breaker, the conversion mechanism, and the second power supply miniature circuit breaker are installed on the mounting frame along a first direction; the first rocker arm is connected to the handle of the first power supply miniature circuit breaker, and the second rocker arm is connected to the handle of the second power supply miniature circuit breaker;

[0005] The conversion mechanism includes a drive motor, a turntable, a first linkage member, and a second linkage member. The drive shaft of the drive motor is connected to the turntable. The first linkage member is linked to the first rocker arm and the turntable. The second linkage member is linked to the second rocker arm and the turntable.

[0006] In some embodiments, the switching device further comprises a bracket, the bracket is arranged on the mounting frame, the bracket comprises a mounting plate, the mounting plate is spaced apart from the mounting frame, and the mounting plate is provided with a mounting hole;

[0007] The driving motor is arranged between the mounting frame and the mounting plate, and the driving shaft of the driving motor protrudes from the mounting hole, and the portion of the driving shaft protruding from the mounting hole is fixedly connected to the turntable.

[0008] In some embodiments, the mounting plate is provided with a first side wall and a second side wall, the first side wall and the second side wall are arranged in parallel and spaced apart and both extend along a first direction;

[0009] The bracket is also provided with a first guide shaft and a second guide shaft which are arranged in parallel and spaced apart. The first guide shaft and the second guide shaft are respectively located on both sides of the turntable. Two ends of the first guide shaft are respectively connected to the first side wall and the second side wall, and two ends of the second guide shaft are respectively connected to the first side wall and the second side wall. The first guide shaft is arranged close to the first power supply miniature circuit breaker, and the second guide shaft is arranged close to the second power supply miniature circuit breaker.

[0010] The first linkage member includes a first push plate and a first spring, the first push plate is movably mounted on the first guide shaft, the first spring is sleeved on the first guide shaft and connected to the first push plate, and the first push plate is linked with the first rocker arm and the rotating disk;

[0011] The second linkage member includes a second push plate and a second spring. The second push plate is movably mounted on the second guide shaft. The second spring is sleeved on the second guide shaft and connected to the second push plate. The second push plate is linked to the second rocker arm and the turntable.

[0012] In some embodiments, the first push plate includes a first main body, the first main body is arranged in linkage with the turntable; a first guide portion and a second guide portion are extended downwardly from both sides of the length direction of the first main body, the first guide portion is arranged toward one side of the first side wall, and the second guide portion is arranged toward one side of the second side wall, and the first guide portion and the second guide portion are movably mounted on the first guide shaft; the first spring is arranged between the first side wall and the first guide portion; a first connecting portion is extended downwardly from the side of the first main body facing the first rocker arm, and the first connecting portion is connected to the first rocker arm;

[0013] The second push plate includes a second main body portion, and the second main body portion is arranged in linkage with the turntable; a third guide portion and a fourth guide portion extend downwardly on both sides of the length direction of the second main body portion, the third guide portion is arranged toward the first side wall, and the fourth guide portion is arranged toward the second side wall, and the third guide portion and the fourth guide portion are movably installed on the second guide shaft; the second spring is arranged between the first side wall and the third guide portion; a second connecting portion extends downwardly from the side of the second main body portion facing the second rocker arm, and the second connecting portion is connected to the second rocker arm.

[0014] In some embodiments, the conversion switch appliance further comprises a first power supply bracket and a second power supply bracket, the first power supply bracket and the second power supply bracket are arranged in parallel and spaced apart, the first power supply miniature circuit breaker is arranged between the first power supply bracket and the conversion mechanism, and the second power supply miniature circuit breaker is arranged between the second power supply bracket and the conversion mechanism;

[0015] The first rocker arm comprises a first cross arm, a first connecting arm and a second connecting arm are extended downward at both ends of the first cross arm, the first connecting arm is rotatably connected to the first power supply bracket, the second connecting arm is provided with a first shaft portion facing the conversion mechanism, the first connecting portion is provided with a first through hole, the size of the first through hole is larger than the outer diameter of the first shaft portion, and the first shaft portion extends into the first through hole;

[0016] The second rocker arm includes a second cross arm, and a third connecting arm and a fourth connecting arm are extended downward at both ends of the second cross arm. The third connecting arm is rotatably connected to the second power supply bracket, and the fourth connecting arm is provided with a second shaft portion facing the conversion mechanism. The second connecting portion is provided with a second through hole, and the size of the second through hole is larger than the outer diameter of the second shaft portion, and the second shaft portion extends into the second through hole.

[0017] In some embodiments, the first connecting arm is connected to the first power supply bracket via a first rotating shaft;

[0018] The third connecting arm is connected to the second power supply bracket via a second rotating shaft.

[0019] In some embodiments, the turntable includes a disk body, and a first columnar portion, a second columnar portion, and a third columnar portion are sequentially spaced on an upper surface of the disk body along a rotation direction;

[0020] A first groove and a second groove are arranged at intervals on a side of the first main body facing the disk body, and the first groove is arranged close to a side of the first side wall;

[0021] A third groove and a fourth groove are arranged at intervals on a side of the second main body facing the disk body, and the third groove is arranged close to a side of the first side wall;

[0022] Wherein, when the turntable rotates, the first columnar portion is used to enter the second groove to push the first push plate to move; the second columnar portion is used to enter the fourth groove to push the second push plate to move; the third columnar portion is used to press against the first groove to limit the first push plate, or the third columnar portion is used to press against the third groove to limit the second push plate.

[0023] In some embodiments, the disc body is provided with a mating portion connected to the drive shaft.

[0024] In some embodiments, the mating portion is cylindrical, and the mating portion is connected to the driving shaft via a pin or a connecting key.

[0025] In some embodiments, a displacement sensor is also provided on the mounting plate.

[0026] The implementation of the utility model has the following beneficial effects: the conversion switch electrical appliance comprises a mounting frame, a first power supply miniature circuit breaker, a second power supply miniature circuit breaker, a conversion mechanism, a first rocker arm, and a second rocker arm; the first power supply miniature circuit breaker, the conversion mechanism, and the second power supply miniature circuit breaker are mounted on the mounting frame along a first direction; the first rocker arm is connected to the handle of the first power supply miniature circuit breaker, and the second rocker arm is connected to the handle of the second power supply miniature circuit breaker; the conversion mechanism comprises a driving motor, a turntable, a first linkage member, and a second linkage member, the driving shaft of the driving motor is connected to the turntable, the first linkage member is linked to the first rocker arm and the turntable, the second linkage member is linked to the second rocker arm and the turntable, the driving motor drives the turntable to rotate, the turntable drives the first linkage member and / or the second linkage member to move, and then drives the first power supply miniature circuit breaker to close or open, and drives the second power supply miniature circuit breaker to close or open. The conversion switch electrical appliance has a simple transmission mechanism, has electrical interlocking and mechanical interlocking, and can realize a reliable automatic conversion switch function. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0028] Figure 1 It is a schematic diagram of the structure of the conversion switch electrical appliance in some embodiments of the utility model;

[0029] Figure 2 It is a schematic diagram of power switches I and II in some embodiments of the utility model in an open state;

[0030] Figure 3 It is a schematic diagram of a power switch I in a closed state and a power switch II in an open state in some embodiments of the utility model;

[0031] Figure 4 It is a schematic diagram of a power switch I in an open state and a power switch II in a closed state in some embodiments of the utility model;

[0032] Figure 5It is a schematic diagram of the structure of the conversion mechanism in some embodiments of the utility model;

[0033] Figure 6 It is a schematic diagram of the structure of the turntable in some embodiments of the utility model;

[0034] Figure 7 It is a structural schematic diagram of the first push plate of the utility model;

[0035] Figure 8 This is a structural schematic diagram of the second push plate described in the utility model;

[0036] Fig. 9 It is a structural schematic diagram of the first rocker arm described in the utility model;

[0037] Fig.10 It is a structural schematic diagram of the second rocker arm described in the utility model;

[0038] Fig.11 This is a structural schematic diagram of the connecting handle described in the utility model;

[0039] Fig.12 It is a side view of the connecting handle of the utility model;

[0040] Fig.13 The utility model is a schematic diagram of the wiring terminals and quick-insert terminals of the miniature circuit breaker. DETAILED DESCRIPTION

[0041] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0042] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0043] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0044] See also Figures 1 to 5 The utility model shows a transfer switch electrical appliance, which can be used in the most stringent power distribution and emergency lighting distribution system requirements in industry, medical treatment, post and telecommunications, petroleum, coal mining, metallurgy, railways, computer centers, ships, military facilities, highways, airports, fire protection, civil buildings and other places. In some embodiments, the transfer switch electrical appliance can also be defined as an "automatic transfer switch electrical appliance".

[0045] In some embodiments, the switching device may include a mounting frame 10 , a first power supply miniature circuit breaker 20 , a second power supply miniature circuit breaker 30 , a switching mechanism 40 , a first rocker arm 50 , and a second rocker arm 60 .

[0046] The first power supply miniature circuit breaker 20, the conversion mechanism 40, and the second power supply miniature circuit breaker 30 are installed on the mounting frame 10 along a first direction, and the first direction may be the length direction of the mounting frame 10; the first rocker arm 50 is connected to the handle 21 of the first power supply miniature circuit breaker 20 and the two can rotate coaxially, and the second rocker arm 60 is connected to the handle 31 of the second power supply miniature circuit breaker 30 and the two can rotate coaxially. The handle 21 may also be defined as the first power supply miniature circuit breaker handle 21, and the handle 31 may also be defined as the second power supply miniature circuit breaker handle 31.

[0047] The conversion mechanism 40 may include a drive motor 41, a turntable 42, a first linkage 43, and a second linkage 44. The drive shaft of the drive motor 41 is connected to the turntable 42. The first linkage 43 is linked with the first rocker arm 50 and the turntable 42. The second linkage 44 is linked with the second rocker arm 60 and the turntable 42. The drive motor 41 drives the turntable 42 to rotate, and the turntable 42 drives the first linkage 43 and / or the second linkage 43 to move, and then drives the first power supply miniature circuit breaker 20 to close or open, and drives the second power supply miniature circuit breaker 30 to close or open. Preferably, the drive motor 41 can be a servo motor, which has high precision and has forward and reverse functions.

[0048] In some embodiments, the switching device further comprises a bracket 45, the bracket 45 is arranged on the mounting frame 10, the bracket 45 comprises a mounting plate 451, the mounting plate 451 is arranged at a distance from the mounting frame 10, and the mounting plate 451 can be arranged parallel to the horizontal part of the mounting frame 10. The mounting plate 451 is provided with a mounting hole, the drive motor 41 is arranged between the mounting frame 10 and the mounting plate 451, and the drive shaft of the drive motor 41 protrudes from the mounting hole, and the part of the drive shaft protruding from the mounting hole is fixedly connected to the turntable 42, and when the drive shaft rotates, the turntable 42 is driven to rotate.

[0049] like Figure 5 As shown, the mounting plate 451 is provided with a first side wall 452 and a second side wall 453 , and the first side wall 452 and the second side wall 453 are arranged in parallel with each other and are both extended along a first direction.

[0050] The bracket 45 is also provided with a first guide shaft 46 and a second guide shaft 47 which are arranged in parallel and at intervals. The first guide shaft 46 and the second guide shaft 47 are respectively located on both sides of the turntable 42. The two ends of the first guide shaft 46 are respectively connected to the first side wall 452 and the second side wall 453, and the two ends of the second guide shaft 47 are respectively connected to the first side wall 452 and the second side wall 453; the first guide shaft 46 is arranged close to the first power supply miniature circuit breaker 20, and the second guide shaft 47 is arranged close to the second power supply miniature circuit breaker 30.

[0051] The first linkage member 43 may include a first push plate 431 and a first spring 432 . The first push plate 431 may be movably mounted on the first guide shaft 46 . The first spring 432 is sleeved on the first guide shaft 46 and connected to the first push plate 431 . The first push plate 431 is linked with the first rocker arm 50 and the turntable 42 .

[0052] The second linkage member 44 may include a second push plate 441 and a second spring 442 . The second push plate 441 may be movably mounted on the second guide shaft 47 . The second spring 442 is sleeved on the second guide shaft 47 and connected to the second push plate 441 . The second push plate 441 is linked with the second rocker arm 60 and the turntable 42 .

[0053] Combination Figures 5 to 8 As shown, the first push plate 431 includes a first main body 4311, and the first main body 4311 is arranged in linkage with the rotating disk 42. The first guide part 4312 and the second guide part 4313 extend downwardly from both sides of the length direction of the first main body 4311, and the first guide part 4312 is arranged toward the first side wall 452, and the second guide part 4313 is arranged toward the second side wall 453. The first guide part 4312 and the second guide part 4313 are movably mounted on the first guide shaft 46. Figure 7 As shown, the first guide portion 4312 and the second guide portion 4313 are both provided with through holes for the first guide shaft 46 to pass through. The through hole can be a substantially circular hole, and the first guide shaft 46 can be a circular shaft, and the two cooperate with each other.

[0054] The first spring 432 is disposed between the first side wall 452 and the first guide portion 4312 .

[0055] A first connecting portion 4314 extends downward from one side of the first main body portion 4311 facing the first rocker arm 50, and the first connecting portion 4314 is connected to the first rocker arm 50. Preferably, the first main body portion 4311 may be substantially in a plate-like structure, and the first guide portion 4312, the second guide portion 4313 and the first connecting portion 4314 are all vertically connected to the first main body portion 4311.

[0056] Combination Figure 8 As shown, similarly, the second push plate 441 includes a second main body 4411, and the second main body 4411 is arranged in linkage with the turntable 42; the second main body 4411 has a third guide portion 4412 and a fourth guide portion 4413 extending downwardly on both sides in the length direction, the third guide portion 4412 is arranged toward the first side wall 452, and the fourth guide portion 4413 is arranged toward the second side wall 453, and the third guide portion 4412 and the fourth guide portion 4413 are movably mounted on the second guide shaft 47; as shown Figure 8As shown, the third guide portion 4412 and the fourth guide portion 4413 are both provided with through holes for the second guide shaft 47 to pass through. The through hole can be a substantially circular hole, and the first guide shaft 46 can be a circular shaft, and the two cooperate with each other.

[0057] The second spring 442 is disposed between the first side wall 452 and the third guide portion 4412. A second connecting portion 4414 extends downwardly from one side of the second main body portion 4411 facing the second rocker arm 60, and the second connecting portion 4414 is connected to the second rocker arm 60. Preferably, the second main body portion 4411 may be substantially in a plate-like structure, and the third guide portion 4412, the fourth guide portion 4413 and the second connecting portion 4414 are all vertically connected to the second main body portion 4411.

[0058] In this embodiment, the first push plate 431 and the second push plate 441 may have the same structure, shape and size.

[0059] Combination Figures 1 to 4 , Figures 9 and 10 As shown, in some embodiments, the switching device also includes a first power support 22 and a second power support 32, the first power support 22 and the second power support 32 are arranged in parallel and spaced apart, the first power miniature circuit breaker 20 is arranged between the first power support 22 and the conversion mechanism 40, and the second power miniature circuit breaker 30 is arranged between the second power support 32 and the conversion mechanism 40.

[0060] like Fig. 9 As shown, the first rocker arm 50 may include a first cross arm 51, and a first connecting arm 52 and a second connecting arm 53 are extended downward at both ends of the first cross arm 51. The first connecting arm 52 is rotatably connected to the first power supply bracket 22. Preferably, the first connecting arm 52 is connected to the first power supply bracket 22 through a first rotating shaft, and the second connecting arm 53 may be rotatably connected to the bracket 45 through a rotating shaft structure. Of course, the rotatable connection method can also be a method in which the positioning column and the positioning hole rotate with each other, or other rotation methods, which are not specifically limited here.

[0061] Furthermore, the second connecting arm 53 is provided with a first shaft portion 54 on the side facing the conversion mechanism 40 , the first connecting portion 4314 is provided with a first through hole 4315 , the size of the first through hole 4315 is larger than the outer diameter of the first shaft portion 54 , and the first shaft portion 54 extends into the first through hole 4315 .

[0062] like Fig.10As shown, the second rocker arm 60 includes a second cross arm 61, and the second cross arm 61 has a third connecting arm 62 and a fourth connecting arm 63 extending downward at both ends, the third connecting arm 62 is rotatably connected to the second power supply bracket 32, and the third connecting arm 62 is connected to the second power supply bracket 32 ​​through a second rotating shaft, and the fourth connecting arm 63 can be rotatably connected to the bracket 45 through a rotating shaft structure. Of course, the rotatable connection method can also be a method in which the positioning column and the positioning hole rotate with each other, or other rotation methods, which are not specifically limited here.

[0063] Furthermore, the fourth connecting arm 63 is provided with a second shaft portion 64 on the side facing the conversion mechanism 40 , the second connecting portion 4414 is provided with a second through hole 4415 , the size of the second through hole 4415 is larger than the outer diameter of the second shaft portion 64 , and the second shaft portion 64 extends into the second through hole 4415 .

[0064] Combination Figures 1 to 4 , Figures 9 to 12 As shown, in some embodiments, the switching device may further include a first connection handle 70 and a second connection handle 80. The first cross arm 51 is provided with a first clamping portion 55, the first connection handle 70 is installed in the first clamping portion 55, and the first connection handle 70 is mutually clamped with the handle 21 of the first power supply miniature circuit breaker 20. The second cross arm 61 is provided with a second clamping portion 65, the second connection handle 80 is installed in the second clamping portion 65, and the second connection handle 80 is mutually clamped with the handle 31 of the second power supply miniature circuit breaker 30. The first connection handle 70 and the second connection handle 80 are both roughly U-shaped structures, and their structures can be roughly as follows: Fig.12 Preferably, the first connection handle 70 and the second connection handle 80 can be made of plastic material or silicone material.

[0065] Combination Figures 1 to 5 , Figure 6 As shown, in some embodiments, the turntable 42 may include a disk body 421, and the upper surface of the disk body 421 is provided with a first columnar portion 422, a second columnar portion 423 and a third columnar portion 424 in sequence along the rotation direction. The rotation direction here may be the clockwise rotation direction or the counterclockwise rotation direction of the turntable 42. The first columnar portion 422, the second columnar portion 423 and the third columnar portion 424 may be roughly cylindrical, and the first columnar portion 422, the second columnar portion 423 and the third columnar portion 424 may be concentrically arranged. Further, a mating portion 425 connected to the drive shaft is provided on the disk body 421. The mating portion 425 may be cylindrical, and the mating portion 425 is connected to the drive shaft by a pin shaft or a connecting key. In some embodiments, a displacement sensor is also provided on the mounting plate 451, and a fourth columnar portion 426 (see Figure 6), the fourth columnar portion 426 is used to cooperate with a displacement sensor to obtain the rotation position of the disk 421. The displacement sensor may include but is not limited to a micro switch, a microwave sensor, etc., and the microwave sensor may include but is not limited to an infrared sensor, a laser sensor, etc.

[0066] For example Figure 7 As shown, further, a first groove 43111 and a second groove 43112 are provided at intervals on one side of the first main body portion 4311 facing the disk body 421 , and the first groove 43111 is provided close to one side of the first side wall 452 .

[0067] For example Figure 8 As shown, a third groove 44111 and a fourth groove 44112 are provided at intervals on one side of the second main body portion 4411 facing the disk body 421 , and the third groove 44111 is provided close to one side of the first side wall 452 .

[0068] Among them, when the turntable 42 rotates, the first columnar portion 422 is used to enter the second groove 43112 to push the first push plate 431 to move; the second columnar portion 423 is used to enter the fourth groove 44112 to push the second push plate 441 to move; the third columnar portion 424 is used to press against the first groove 43111 to limit the first push plate 431, or the third columnar portion 424 is used to press against the third groove 44111 to limit the second push plate 441.

[0069] In this embodiment, the conversion switch electrical appliance is applied as follows:

[0070] See also Figure 3 , the initial state of the switching device when both power supplies are normal is that the first power supply miniature circuit breaker 20 on the left is in the closed state to ensure the conduction of power supply I, and the second power supply miniature circuit breaker 30 on the right is in the open state to ensure the disconnection of power supply II. The turntable 42 is in the extreme position of clockwise rotation, and the second groove 43112 of the first push plate 431 is pushed upward by the first columnar portion 422 of the turntable 42, so that the first push plate 431 is in the upper extreme position. The first shaft portion 54 on the first rocker arm 50 is pushed by the first through hole 4315 of the first push plate 431 to rotate the first rocker arm 50 around its rotation center to the upper extreme position, thereby driving the handle 21 on the first power supply miniature circuit breaker 20 to move upward to ensure that the first power supply miniature circuit breaker 20 is always in the closed state.

[0071] The third columnar portion 424 of the turntable 42 and the third groove 44111 of the second push plate 441 are closely matched to ensure that the second push plate 441 is always in the lower limit position, and the second shaft portion 64 on the second rocker arm 60 is pushed by the second through hole 4415 (or the second connecting portion 64) of the second push plate 441 to keep the second rocker arm 60 in the lower limit position of its rotation center, so that the handle 31 on the second power supply miniature circuit breaker 30 is also in the lower limit position, ensuring that the second power supply miniature circuit breaker 30 is always in the disconnected state, thereby realizing the mechanical interlocking linkage of the two power supplies I and II.

[0072] Likewise, if Figure 3 As shown, the switching device is in the initial state. When the power supply of power source I is abnormal (such as overvoltage, undervoltage, phase failure, etc.), the switching mechanism 40 can start to operate under the instruction of the controller to switch the load end connected to power source I to power source II. The specific conversion process is as follows: the turntable 42 starts to rotate counterclockwise under the drive of the driving motor 41, and the second groove 43112 of the first push plate 431 is pushed downward by the first columnar portion 422 on the turntable 42, so that the first push plate 431 moves downward along the first guide shaft 46. When the upper edge of the first through hole 4315 contacts the first push plate 4311, the first push plate 431 moves downward along the first guide shaft 46. When the force of contacting and pushing the first shaft portion 54 on the first rocker arm 50 is greater than the opening reaction force of the first power supply miniature circuit breaker 20, the first power supply miniature circuit breaker 20 realizes the opening action under the action of its opening reaction force, and at the same time drives the handle 21 of the first power supply miniature circuit breaker 20 and the first rocker arm 50 to move downward, completing the disconnection action of the I power supply. At this time, the first push plate 431 continues to move downward under the push of the turntable 42 until the upper edge of its first through hole 4315 contacts the second shaft portion 64 on the first rocker arm 50 and is limited to reach the lower limit position. Thereafter, the first columnar portion 422 on the turntable 42 is also separated from the second groove 43112 of the first push plate 431 and no longer moves in contact, reaching the double-opening position of the two power supplies (such as Figure 2 Then the turntable 42 continues to rotate counterclockwise, and its second columnar portion 423 slides into the fourth groove 44112 of the second push plate 441, and the second columnar portion 423 pushes the second push plate 441 to move upward along the second guide shaft 47. When the lower edge of the second through hole 4415 of the right push plate contacts the second shaft portion 64 on the second rocker arm 60, the second rocker arm 60 is driven by the second push plate 441 to move upward, thereby driving the handle 31 of the second power supply miniature circuit breaker 30 to push the second power supply miniature circuit breaker 30 to close, and the II power supply is closed in place (as shown in FIG. Figure 4As shown). When the second power supply miniature circuit breaker 30 is closed, the second rocker arm 60 and the handle 31 of the second power supply miniature circuit breaker 30 also reach their upper limit position, and the turntable 42 reaches the counterclockwise rotation limit position and stops rotating, and the switching action of switching from power supply I to power supply II is completed. At this time, the third columnar portion 424 on the turntable 42 is closely matched with the first groove 43111 of the first push plate 431 to ensure that the first push plate 431 is always in the lower limit position, and the first shaft portion 54 on the first rocker arm 50 is pushed by the first through hole 4315 of the first push plate 431 to keep the first rocker arm 50 at the lower limit position of its rotation center, so that the handle 21 on the first power supply miniature circuit breaker 20 is also in the lower limit position, ensuring that the first power supply miniature circuit breaker 20 is always in the disconnected state, thereby realizing the mechanical interlocking linkage of the two power supplies I and II.

[0073] Similarly, the initial state is Figure 4 When (II power is closed, I power is opened), the motor rotates clockwise to open the first power miniature circuit breaker 20 and close the second power miniature circuit breaker 30, completing the action of switching from II power to I power.

[0074] like Fig.13 As shown, in some embodiments, the connection terminals 90 of the first power supply miniature circuit breaker 20 and the second power supply miniature circuit breaker 30 are connected to the quick-plug terminals 92 through rivets 91, and the quick-plug terminals 92 are connected to the sampling signal line terminals 93 of the controller, which plays the role of detecting the voltage of each phase at the input and output terminals of the I and II power supplies and feeding it back to the controller for conversion instructions.

[0075] It can be understood that the transfer switch electrical appliance is small in size, light in weight, long in life, has a simple transmission mechanism, has electrical interlocking and mechanical interlocking, and can realize a reliable automatic transfer switch function.

[0076] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A transfer switch electrical appliance, characterized in that: It comprises a mounting frame (10), a first power supply miniature circuit breaker (20), a second power supply miniature circuit breaker (30), a conversion mechanism (40), a first rocker arm (50), and a second rocker arm (60); The first power supply miniature circuit breaker (20), the conversion mechanism (40), and the second power supply miniature circuit breaker (30) are mounted on the mounting frame (10) along a first direction; the first rocker arm (50) is connected to a handle of the first power supply miniature circuit breaker (20), and the second rocker arm (60) is connected to a handle of the second power supply miniature circuit breaker (30); The conversion mechanism (40) comprises a driving motor (41), a rotating disk (42), a first linkage member (43), and a second linkage member (44); the driving shaft of the driving motor (41) is connected to the rotating disk (42); the first linkage member (43) is arranged in linkage with the first rocker arm (50) and the rotating disk (42); and the second linkage member (44) is arranged in linkage with the second rocker arm (60) and the rotating disk (42).

2. The transfer switch device according to claim 1, characterized in that: The conversion switch electrical appliance further comprises a bracket (45), the bracket (45) being arranged on the mounting frame (10), the bracket (45) comprising a mounting plate (451), the mounting plate (451) being arranged at a distance from the mounting frame (10), and a mounting hole being arranged on the mounting plate (451); The drive motor (41) is arranged between the mounting frame (10) and the mounting plate (451), and the drive shaft of the drive motor (41) protrudes from the mounting hole, and the portion of the drive shaft protruding from the mounting hole is fixedly connected to the turntable (42).

3. The transfer switch device according to claim 2, characterized in that: The mounting plate (451) is provided with a first side wall (452) and a second side wall (453), wherein the first side wall (452) and the second side wall (453) are arranged in parallel with each other and are both extended along a first direction; The bracket (45) is also provided with a first guide shaft (46) and a second guide shaft (47) which are arranged in parallel and spaced apart. The first guide shaft (46) and the second guide shaft (47) are respectively located on both sides of the rotating disk (42). The two ends of the first guide shaft (46) are respectively connected to the first side wall (452) and the second side wall (453), and the two ends of the second guide shaft (47) are respectively connected to the first side wall (452) and the second side wall (453); the first guide shaft (46) is arranged close to the first power supply miniature circuit breaker (20), and the second guide shaft (47) is arranged close to the second power supply miniature circuit breaker (30); The first linkage member (43) comprises a first push plate (431) and a first spring (432); the first push plate (431) is movably mounted on the first guide shaft (46); the first spring (432) is sleeved on the first guide shaft (46) and connected to the first push plate (431); the first push plate (431) is linked with the first rocker arm (50) and the rotating disk (42); The second linkage member (44) comprises a second push plate (441) and a second spring (442); the second push plate (441) is movably mounted on the second guide shaft (47); the second spring (442) is sleeved on the second guide shaft (47) and connected to the second push plate (441); the second push plate (441) is linked to the second rocker arm (60) and the turntable (42).

4. The transfer switch device according to claim 3, characterized in that: The first push plate (431) includes a first main body (4311), and the first main body (4311) is arranged in linkage with the rotating disk (42); a first guide portion (4312) and a second guide portion (4313) are extended downwardly on both sides of the length direction of the first main body (4311), the first guide portion (4312) is arranged toward the first side wall (452), and the second guide portion (4313) is arranged toward the second side wall (453), and the first guide portion (4312) and the second guide portion (4313) are movably installed on the first guide shaft (46); the first spring (432) is arranged between the first side wall (452) and the first guide portion (4312); a first connecting portion (4314) is extended downwardly on the side of the first main body (4311) facing the first rocker arm (50), and the first connecting portion (4314) is connected to the first rocker arm (50); The second push plate (441) includes a second main body (4411), and the second main body (4411) is arranged in linkage with the turntable (42); a third guide portion (4412) and a fourth guide portion (4413) are extended downward on both sides of the length direction of the second main body (4411), the third guide portion (4412) is arranged toward the first side wall (452), and the fourth guide portion (4413) is arranged toward the second side wall (453), and the third guide portion (4412) and the fourth guide portion (4413) are movably installed on the second guide shaft (47); the second spring (442) is arranged between the first side wall (452) and the third guide portion (4412); a second connecting portion (4414) is extended downward on the side of the second main body (4411) facing the second rocker arm (60), and the second connecting portion (4414) is connected to the second rocker arm (60).

5. The transfer switch device according to claim 4, characterized in that: The conversion switch appliance further comprises a first power supply bracket (22) and a second power supply bracket (32), wherein the first power supply bracket (22) and the second power supply bracket (32) are arranged in parallel and spaced apart, the first power supply miniature circuit breaker (20) is arranged between the first power supply bracket (22) and the conversion mechanism (40), and the second power supply miniature circuit breaker (30) is arranged between the second power supply bracket (32) and the conversion mechanism (40); The first rocker arm (50) comprises a first cross arm (51), and a first connecting arm (52) and a second connecting arm (53) are extended downwardly from both ends of the first cross arm (51), the first connecting arm (52) is rotatably connected to the first power supply bracket (22), and the second connecting arm (53) is provided with a first shaft portion (54) on the side facing the conversion mechanism (40), and the first connecting portion (4314) is provided with a first through hole (4315), the size of the first through hole (4315) is larger than the outer diameter of the first shaft portion (54), and the first shaft portion (54) extends into the first through hole (4315); The second rocker arm (60) includes a second cross arm (61), and a third connecting arm (62) and a fourth connecting arm (63) are extended downward from both ends of the second cross arm (61), the third connecting arm (62) is rotatably connected to the second power supply bracket (32), and the fourth connecting arm (63) is provided with a second shaft portion (64) on the side facing the conversion mechanism (40), and the second connecting portion (4414) is provided with a second through hole (4415), the size of the second through hole (4415) is larger than the outer diameter of the second shaft portion (64), and the second shaft portion (64) extends into the second through hole (4415).

6. The transfer switch device according to claim 5, characterized in that: The first connecting arm (52) is connected to the first power supply bracket (22) via a first rotating shaft; The third connecting arm (62) is connected to the second power supply bracket (32) via a second rotating shaft.

7. The transfer switch device according to claim 5, characterized in that: The rotating disk (42) comprises a disk body (421), and a first columnar portion (422), a second columnar portion (423) and a third columnar portion (424) are sequentially arranged on the upper surface of the disk body (421) in a rotation direction; A first groove (43111) and a second groove (43112) are provided at intervals on one side of the first main body (4311) facing the disk body (421), and the first groove (43111) is provided close to one side of the first side wall (452); A third groove (44111) and a fourth groove (44112) are provided at intervals on one side of the second main body (4411) facing the disk body (421), and the third groove (44111) is provided close to one side of the first side wall (452); Wherein, when the turntable (42) rotates, the first columnar portion (422) is used to enter the second groove (43112) to push the first push plate (431) to move; the second columnar portion (423) is used to enter the fourth groove (44112) to push the second push plate (441) to move; the third columnar portion (424) is used to press against the first groove (43111) to limit the first push plate (431), or the third columnar portion (424) is used to press against the third groove (44111) to limit the second push plate (441).

8. The transfer switch device according to claim 7, characterized in that: The disc body (421) is provided with a matching portion (425) connected to the driving shaft.

9. The transfer switch device according to claim 8, characterized in that: The matching portion (425) is cylindrical, and the matching portion (425) is connected to the driving shaft via a pin shaft or a connecting key.

10. The transfer switch device according to claim 2, characterized in that: The mounting plate (451) is also provided with a displacement sensor.

Images