changeover switch

Abstract

This invention provides a changeover switch, comprising: a switching part having: a first rotating member having a rotating input end, a rotating output end, and a first fixed rotating shaft; and a second rotating member having a moving contact link, a rotating cavity, and a second fixed rotating shaft; wherein the rotating output end is movably disposed in the rotating cavity, and when the rotating output end rotates around the first fixed rotating shaft, the rotating output end can push the rotating cavity to drive the moving contact link to reciprocate between a first position and a second position around the second fixed rotating shaft. The changeover switch further includes at least one driving part, each driving part having a driver and a driving disk, the driver enabling the driving disk to rotate around a fixed axis; the driving disk includes a driving output part connected to the rotating input end of the first rotating member to transmit the rotational motion of the driving disk to the rotating input end.

Description

Technical Field

[0001] This invention relates to a changeover switch, and more particularly to a dual-power changeover switch, which can be implemented for manual and / or automatic operation. Background Technology

[0002] Automatic transfer switches (ATS) are used to switch between two power sources to ensure continuous power supply to critical loads. The mechanism of the ATS is a critical component, directly affecting its performance, cost, and reliability. Existing technology uses a mechanism with three electromagnet actuators to design a three-position fast-switching ATS. However, this product has a complex structure and therefore poor reliability. Alternatively, existing technology uses a mechanism with a single electromagnet actuator to design a two-position fast-switching ATS. However, the switching of this type of product is sometimes unstable and the product size is large. Furthermore, some products have the drawback of excessively fast switching speeds, which may cause arcing in the switch during power switching, posing a risk of short circuit between the two power sources. Summary of the Invention

[0003] In view of this, the present invention proposes a transfer switch that can be used as an automatic transfer switch for dual power supplies, or it can be manually operated to perform dual power supply switching.

[0004] The present invention provides a changeover switch, comprising: a changeover part having: a first rotating member having a rotating input end, a rotating output end, and a first fixed rotating shaft; and a second rotating member having a moving contact link, a rotating cavity, and a second fixed rotating shaft; wherein the rotating output end is movably disposed in the rotating cavity, and when the rotating output end rotates around the first fixed rotating shaft, the rotating output end can push the rotating cavity to drive the moving contact link to reciprocate between a first position and a second position around the second fixed rotating shaft.

[0005] According to one embodiment, the rotating cavity includes a first straight cavity, a second straight cavity, and an arc-shaped cavity that are interconnected. The arc-shaped cavity has a first arc-shaped sidewall and a second arc-shaped sidewall. The concave surfaces of the first arc-shaped sidewall and the second arc-shaped sidewall face each other, and the first straight cavity and the second straight cavity are respectively disposed at both ends of the arc-shaped cavity.

[0006] According to one embodiment, when the rotating output end is located in the first straight cavity and is pushed to move, the moving contact link moves from the first position to the second position; when the rotating output end is located in the second straight cavity and is pushed to move, the moving contact link moves from the second position to the first position.

[0007] According to one embodiment, when the rotating output end contacts the first arc-shaped sidewall, the rotating output end moves along the first arc-shaped sidewall, and the moving contact link remains in the first position; when the rotating output end contacts the second arc-shaped sidewall, the rotating output end moves along the second arc-shaped sidewall, and the moving contact link remains in the second position.

[0008] According to one embodiment, the moving contact link is fixedly connected to the rotating cavity.

[0009] Therefore, the changeover switch with the above structure provides a product with smoother switching, lower cost, and smaller size.

[0010] According to one embodiment, the changeover switch further includes at least one drive section, each drive section having a driver and a drive disk, the driver enabling the drive disk to rotate about a fixed axis; the drive disk includes a drive output section connected to the rotation input end of the first rotating member to transmit the rotational motion of the drive disk to the rotation input end.

[0011] According to one embodiment, the driver includes a drive rod capable of reciprocating along a drive direction and a reset direction opposite to the drive direction, and an actuator connected to the drive rod; during the movement of the drive rod along the drive direction, the drive disk is driven by the actuator, while during the movement of the drive rod along the reset direction, the drive disk is not driven by the actuator, and the moving contact link remains in an intermediate position between a first position and a second position.

[0012] According to one embodiment, the drive disk includes a plurality of drive pins, and the actuator can sequentially drive each of the plurality of drive pins during the movement of the drive rod in the drive direction to cause the drive disk to rotate; one of the plurality of drive pins is configured as the drive output portion connected to the rotation input end of the first rotating member.

[0013] According to one embodiment, the actuator is configured as a rotatable actuator connected to one end of the drive rod, such that: when the drive rod moves in the driving direction, the rotatable actuator is in an initial state and can engage and drive a corresponding one of the plurality of drive pins without rotation; when the drive rod moves in the reset direction, the corresponding other one of the plurality of drive pins interacts with the rotatable actuator and causes the rotatable actuator to rotate to enter a rotating state, and the corresponding other one of the plurality of drive pins is not driven by the rotatable actuator.

[0014] According to one embodiment, a torsion spring is provided between the rotatable actuator and the drive rod so that the rotatable hook can be reset from the rotating state to the initial state.

[0015] According to one embodiment, the drive rod is configured as a moving iron core that can be electromagnetically driven, and the drive rod is configured as a moving iron core; the driver also includes a return spring that can cause the moving iron core to move in the return direction.

[0016] According to one embodiment, the drive disk includes four drive pins evenly arranged along the circumference of the drive disk.

[0017] According to one embodiment, the at least one drive component further includes an energy storage spring sleeved on a rotatable rod, the end of which is provided with a receiving portion capable of receiving each of the plurality of drive pins; each of the plurality of drive pins compresses the energy storage spring through the receiving portion within a first rotation range during its rotation process, and is pushed by the energy storage spring through the receiving portion and continues to rotate within a second rotation range during its rotation process.

[0018] According to one embodiment, the at least one driving part includes two driving parts, which are respectively disposed on both sides of the driving disk along the radial direction of the driving disk and alternately cause the driving disk to rotate.

[0019] According to a preferred embodiment of the present invention, an ATS mechanism with only one electromagnet actuator is realized, but its moving contact link has a paused intermediate position, thereby preventing the defect of excessively fast switching speed causing a short circuit between the two power supplies. This achieves a two-position fast-switching ATS. Furthermore, according to other preferred embodiments of the present invention, an even faster-switching ATS composed of two co-directionally driven actuators can be developed, and the intermediate position pause of the moving contact link as described above can also be set, further avoiding excessively fast switching that could cause a short circuit between the two power supplies. Therefore, the changeover switch according to the present invention can manufacture a safer ATS product at the same or lower cost and in a smaller size. Attached Figure Description

[0020] Figure 1 The switching portion of a changeover switch according to an embodiment of the present invention is shown;

[0021] Figure 2 The driving portion of a changeover switch according to an embodiment of the present invention is shown;

[0022] Figure 3-17 The operation of a changeover switch according to an embodiment of the present invention is shown;

[0023] Figure 18 An embodiment of a changeover switch comprising two drive sections according to the present invention is shown. Detailed Implementation

[0024] It should be understood that the orientations, directions, etc. mentioned in the specification and drawings are for descriptive convenience and do not constitute a limitation on the present invention.

[0025] This invention provides a changeover switch, such as Figure 1 As shown, it can be implemented, for example, as a dual-power automatic transfer switch and / or a dual-power manual transfer switch.

[0026] According to one embodiment, the changeover switch includes: a switching part 1, which has: a first rotating member 11 having a rotation input end 111, a rotation output end 112, and a first fixed rotating shaft 113; and a second rotating member 12 having a moving contact link 121, a rotating cavity 122, and a second fixed rotating shaft 123. Preferably, the first fixed rotating shaft 113 is disposed, for example, between the rotation input end 111 and the rotation output end 112. A moving contact 124 is provided at one end of the moving contact link 121, for example, which can contact a stationary contact A (corresponding to the first position) or a stationary contact B (corresponding to the second position), thereby realizing the switching between two power supplies. The second fixed rotating shaft 123 is provided at the other end of the moving contact link 121, for example.

[0027] Furthermore, the rotating output end 112 is movably disposed in the rotating cavity 122, and when the rotating output end 112 rotates around the first fixed rotating shaft 113, the rotating output end 112 can push the rotating cavity 122 to drive the moving contact connecting rod 121 to reciprocate between the first position and the second position around the second fixed rotating shaft 123.

[0028] The accompanying diagram illustrates the basic connection and motion relationships of the changeover switch using a simplified linkage diagram. Those skilled in the art will understand that the specific structure and spatial relationships of the first rotating member 11, the second rotating member 12, and their respective components can adopt any suitable structure and form. For example, Figure 1 The first rotating member 11 shown can be implemented as a rotatable rod or a rotatable disc. The rotation input end 11 and the rotation output end 112 can be implemented as pins, protrusions, rollers, etc., and can have suitable surface treatment and lubrication to meet the needs of connection and contact with other structures. For example, the rotation cavity 122 of the second rotating member 12 can be a relatively closed cavity or a relatively open cavity composed of two side walls (as described below), as long as the rotation output end 112 can push the rotation cavity 122 to achieve the above reciprocating motion when rotating around the first fixed rotating shaft 113 (e.g., within a 360-degree rotation range).

[0029] An example of automatic switching of the changeover switch according to the invention is further shown in Figure 3-17 The automatic operation of the switch will then be further described in conjunction with the specific structure of the switching part 1 and the driving part 2, which will be detailed later.

[0030] According to a preferred embodiment of the present invention, the rotating cavity 122 includes, for example, a first straight cavity 1221, a second straight cavity 1222, and an arc-shaped cavity 1223 that are interconnected. The arc-shaped cavity 1223 has a first arc-shaped sidewall 1224 and a second arc-shaped sidewall 1225 that are opposite to each other (for example, the concave surfaces of the two arc-shaped sidewalls are opposite to each other), and the first straight cavity 1221 and the second straight cavity 1222 are respectively disposed at both ends of the arc-shaped cavity 1223.

[0031] Due to the structure of the first rotating member 11 and the second rotating member 12, when the rotating output end 112 is located in the first straight cavity 1221 and is pushed to move (due to this pushing action, the second rotating member 12 will also rotate around the second fixed rotating shaft 123 accordingly as the first rotating member 11 rotates), the moving contact link 121 moves from the first position toward the second position, for example, see [reference needed]. Figure 4-9 The motion process is shown; when the output terminal 112 is located in the second straight cavity 1222 and is pushed to move, the moving contact rod 121 moves from the second position toward the first position, for example, see Figure 13-17 The motion process shown.

[0032] According to a preferred embodiment of the present invention, when the rotating cavity 122 adopts the aforementioned arc-shaped sidewall and the curvature of the arc-shaped sidewall is reasonably set according to the actual situation, when the rotating output end 112 contacts the first arc-shaped sidewall 124, the rotating output end 112 moves along the first arc-shaped sidewall 1224 (e.g., slides or rolls along it, depending on the specific structure of the rotating output end 112, for example, it can be a cylindrical pin or a cylindrical roller), and the moving contact link 121 basically remains in the first position (e.g., ...). Figure 3-4 (As shown in Figure 17). That is, during the process of the rotating output end 112 contacting and moving along the first arc-shaped sidewall 1224, no significant force is applied to the first arc-shaped sidewall 124, or the applied force is relatively small. This ensures that the moving contact 124 presses against the stationary contact A with appropriate force, while preventing excessive stress on the moving contact link 121 itself or at the stationary contact A. Similarly, when the rotating output end 112 contacts the second arc-shaped sidewall 1225, the rotating output end 112 moves along the second arc-shaped sidewall 1225, and the moving contact link 121 remains essentially in the second position (as shown in Figure 17). Figure 9-11 As shown in the diagram, this design ensures that the moving contact 124 presses against the stationary contact B with appropriate force, while preventing excessive stress on the moving contact linkage 121 itself or at the stationary contact B. Therefore, this specific structure of the rotating cavity 122 enables stable and reliable contact between the moving contact 124 and the stationary contacts A and B.

[0033] Although the preferred structure described above ensures reliable contact between the moving and stationary contacts, other alternatives can achieve similar results. For example, a straight and elastic first and second sidewall can be used instead of the first and second arc-shaped sidewalls (thus making the rotating cavity essentially straight). When the rotating output end contacts and presses against the elastic first and second sidewalls, the elastic first and second sidewalls will undergo a certain amount of elastic deformation, resulting in a shape similar to the arc-shaped sidewall, thus achieving reliable and stable contact between the contacts as described above. For example, the first and second sidewalls still adopt the form of basically straight walls (or only with a small curvature), while one or more of the moving contact link 121, the moving contact 124 on it, and the stationary contacts A and B can be set to undergo a certain elastic deformation or displacement. That is to say, when the rotating output end 112 moves along the first and second sidewalls, due to the elastic deformation or displacement of one or more of the moving contact link 121, the moving contact 124 on it, and the stationary contacts A and B, a stable and reliable contact between the moving contact 124 and the stationary contacts A and B can also be achieved.

[0034] More preferably, the moving contact link 121 can be fixedly connected to the rotating cavity 122, for example, the two can be connected together by integral molding, welding, bolting or the like to move synchronously.

[0035] According to a further preferred embodiment of the present invention, in order to achieve automatic switching of the changeover switch, a drive portion for driving the first rotating member can be provided. Specifically, see [link to relevant documentation]. Figure 2 The changeover switch may include at least one drive section 2 for applying rotational motion to the rotational input terminal 111 of the changeover section 1. (Refer to the following text.) Figure 2-17 The embodiment shown includes a drive section 2 to illustrate an example of automatic switching of a changeover switch implemented by a drive section.

[0036] Specifically, each drive unit 2 includes, for example, a driver 21 and a drive disk 22. The drive disk 22 is, for example, generally disc-shaped, and the driver 21 enables the drive disk 22 to rotate about its central axis. The drive disk 22 includes, for example, a drive output portion (e.g., a drive pin 221a described later), which is connected to the rotation input end 111 of the first rotating member 1 to transmit the rotational motion of the drive disk 22 to the rotation input end 111. The connection between the drive output portion of the drive disk 22 and the rotation input end 111 of the first rotating member 1 can be in a suitable manner, for example, they can be directly rotatably connected if space permits, or they can be indirectly connected through an intermediate transmission mechanism (e.g., consisting of one or more connecting rods), as long as the drive output portion (drive pin) can transmit the rotational motion to the rotation input end.

[0037] According to one embodiment of the present invention, the actuator 21 includes a drive rod 211 capable of reciprocating along a driving direction (e.g., to the left in the figures) and a reset direction opposite to the driving direction (e.g., to the right in the figures), and an actuator 212 connected to the drive rod, for example, the actuator 212 being disposed at the end of the drive rod 211. Furthermore, the drive disk 22 includes, for example, a plurality of drive pins, such as four drive pins 221a-221d evenly arranged along the circumference of the drive disk in the illustrated embodiment. The actuator 212 can sequentially engage and drive each of the plurality of drive pins (221a-221d) as the drive rod 211 moves along the driving direction, thereby causing the drive disk 22 to rotate.

[0038] One of the plurality of drive pins (e.g., drive pin 221a) may be configured as the drive output portion connected to the rotation input end 111 of the first rotating member 11. See also Figure 3-17 The drive pin 221a of the drive disk 22 and the rotation input end 111 of the first rotating member 1 are shown as solid black circles to illustrate their corresponding motion relationship. It should be noted that although the drive disk 22 includes four drive pins 221a-221d in the illustrated embodiment, more or fewer drive pins may be provided depending on the operational requirements of the changeover switch and the specific dimensions of the workpiece to be installed.

[0039] More preferably, the driver 21 can be configured as a solenoid-moving iron core structure. Specifically, the driver 21 is configured as an electromagnetic driver, and the drive rod 211 is configured as a moving iron core. The actuator 212 is configured as a rotatable actuator connected to the end of the moving iron core. According to a preferred embodiment, it is, for example, in the form of a hook as shown in the figure, and is configured to be non-reversely rotatable but clockwise rotatable.

[0040] With this configuration, when the drive rod 211 moves in the driving direction (to the left in the figure), the rotatable actuator 212 is in its initial state and can engage and drive the corresponding one of the plurality of drive pins without rotation. For example, as Figure 3-4 As shown, the drive rod 211 drives the rotatable actuator 212 to move to the left and engage the drive pin 221a. Since the rotatable actuator 212 is set to an initial state where it cannot rotate counterclockwise, it can pull the drive pin 221a to move to the left. In turn, the drive pin 221a drives the drive disc 22 to rotate counterclockwise. Figure 5 The state shown.

[0041] When the drive rod 211 moves in the reset direction (to the right in the figure), the corresponding other drive pin interacts with the rotatable actuator 212, causing the rotatable actuator 212 to rotate, thus entering the rotation state. Specifically, as... Figure 5-6As shown, the drive rod 211 drives the rotatable actuator 212 to move to the right and contact the drive pin 221b. Since the rotatable actuator 212 is designed to rotate clockwise, it is pushed by the drive pin 221b to rotate clockwise. Then, as the drive rod 211 moves further to the right, the rotatable actuator 212 passes the drive pin 221b and returns to its original position. Figure 7 The initial state is shown. During this process, the drive disk 22 does not rotate counterclockwise.

[0042] More preferably, to achieve the above-mentioned action of the rotatable actuator, a torsion spring (not shown) can be provided between the rotatable actuator and the moving iron core to allow the rotatable actuator to return from the rotating state to the initial state. It should be understood that other suitable methods can also be used to achieve the transition between the initial and rotating states of the rotatable actuator, such as using a micro-motor to drive the rotatable actuator, coordinating with the movement of the driving component to drive the rotatable actuator at appropriate times to achieve the above-mentioned action. Furthermore, although an example of a rotatable actuator has been given, the actuator can also be non-rotatable, with only the end of the actuator being configured with a structure / material that is easily elastically deformable in the clockwise direction but not easily deformable in the counterclockwise direction, thereby achieving the above-mentioned action.

[0043] More preferably, the actuator 21 may further include a return spring (not shown) that enables the drive rod 211 to move in the return direction, for example, by springing the drive rod 211 back to its original position when it is not electromagnetically driven. Figure 3 The location shown.

[0044] According to a further preferred embodiment, such as Figure 2 As shown, the drive section 2 further includes, for example, an energy storage spring 23, which is sleeved on a rotatable rod 231. The end of the rod 231 is provided with a receiving portion 232 capable of receiving each of the plurality of drive pins (for example, each of drive pins 221a-221d in the embodiment shown in the figure). Further, each of the plurality of drive pins, for example, compresses the energy storage spring through the receiving portion in a first rotation range during its rotation process, and is pushed by the energy storage spring through the receiving portion and continues to rotate in a second rotation range during its rotation process, as detailed below.

[0045] See below. Figure 3-17 Briefly describe the automatic operation process of the above-mentioned changeover switch.

[0046] First, from Figure 3 Starting from the state where the moving contact A is ON (first position), the drive rod 211 is about to drive the actuator 212 to move to the left and is about to pull the drive pin 221a. At this time, the drive pin 221c is received by the energy storage spring 23. As the drive rod 211 begins to move to the left, as... Figure 4-5 As shown, the drive rod 211 pulls the drive pin 221a, which, with the assistance of the energy storage spring 23 (as described later), causes the drive disc 22 to rotate 90 degrees counterclockwise. Simultaneously, the drive pin 221a drives the rotation input end 111 of the first rotating component 11 to rotate, thereby causing the moving contact connecting rod 121 to move from the first position contacting the stationary contact A towards the stationary contact B, reaching the intermediate position between stationary contacts A and B, i.e., the stop position in the middle of the changeover switch. Figure 5 As shown. During this process, the drive pin 221c compresses the energy storage spring 23 within the first rotational range (e.g., the first 50 degrees) of its rotation, causing the energy storage spring 23 to accumulate elastic potential energy, achieving the effect shown. Figure 4 As shown, the energy storage state is approximately at its maximum. Subsequently, within the second rotational range of the drive pin 221c (e.g., 40 degrees backward), the energy storage spring 23 releases its elastic potential energy. The drive pin 221c is pushed by the energy storage spring 23 and continues to rotate counterclockwise, eventually leaving the energy storage spring 23, reaching its maximum energy storage state. Figure 5 The state shown.

[0047] Subsequently, the drive rod 211 returns to its original position to the right under the drive of its return spring. Figure 6 The state shown has changed to Figure 7 The state is shown. During this process, as previously shown, only the drive rod 211 and its rotatable actuator 212 move to the right. The rotatable actuator 212 passes the drive pin 221b while the drive disk 22 does not rotate. Therefore, the moving contact link 121 remains in the intermediate position for a period of time (roughly corresponding to the time it takes for the drive rod to perform a reset movement). Due to this preferred embodiment, the moving contact link 121 pauses at the intermediate position during its movement from the first position to the second position. Although the pause is short, it is sufficient to extinguish any arc that may occur between the moving contact and the stationary contact, thus preventing a short circuit between the stationary contacts A and B due to such an arc.

[0048] Subsequently, from Figure 7 Starting from the state shown, the drive rod 211 drives the rotatable actuator 212 to move to the left again and pulls the drive pin 221b. The drive disk 22 rotates 90 degrees counterclockwise again, as shown in the figure. Figure 8-11 As shown in the process, the moving contact linkage 121 moves from the middle position to the state of being connected (ON) with the stationary contact B (second position), and the drive rod 211 resets to the right to prepare for further driving of the drive pin 221c, as... Figure 12 As shown.

[0049] Similar to the driving process described above, Figure 12-14The diagram illustrates the driving process of the drive rod 211 on the drive pin 221c. During this process, the moving contact link 121 moves from the second position, which is in contact with the stationary contact B, toward the stationary contact A to the intermediate position, i.e., the pause position in the middle of the changeover switch. Figure 14 ). Figure 15-17 The diagram illustrates the driving process of the drive lever 211 on the drive pin 221d, during which the moving contact link 121 moves from the intermediate position to the first position where it is again connected (ON) with the stationary contact A. This completes a full automatic switching cycle of the changeover switch according to the embodiment shown in the accompanying drawings.

[0050] It should be understood that, although Figure 7-17 The energy storage spring 23 is omitted, but it sequentially applies the energy storage / release action described above to each of the remaining drive pins 221d, 221a, and 221b. Furthermore, it should be understood that the energy storage spring 23 is not an essential component. For example, by adjusting the stroke of the drive rod 211, a single movement in the drive direction can rotate the drive disc 22 90 degrees without the assistance of the energy storage spring.

[0051] Furthermore, although in the embodiment shown in the attached figures, the actuator 212 drives each drive pin in a "pulling" manner, this driving can also be achieved in a "pushing" manner, simply by changing the arrangement and connection relationship of the drive rod and the actuator, etc., which will not be elaborated here. Even the drive rod may not use the left-right linear motion driving method shown in the figure, but rather a rotational motion driving method, as long as it can drive the actuator to drive the drive pin.

[0052] It should also be understood that the rotation of the conversion part and the drive part and their components is not limited to the specific rotation direction described and shown in the illustrated embodiment, but can follow different rotation directions according to the actual situation and structural requirements. For example, the drive disk / first rotating component can also rotate clockwise.

[0053] It should also be understood that although the illustrated embodiment provides an example of an automatic changeover switch, the changeover switch can also be manually driven, i.e., manually rotated at the rotation input end of the first rotating member by means of a knob, wheel, etc.

[0054] Furthermore, faster switching (i.e., shorter contact switching time) can sometimes have a significant impact on the application of ATS. In the illustrated embodiment, the ATS contact switching time is determined by the pulling time of the moving iron core and its reset return time, which can be around 200ms, but cannot be less than 100ms.

[0055] Therefore, to achieve a faster response, another improved embodiment of the changeover switch was proposed. By adding a driver that pulls in the same direction, the ATS can be switched faster because the switching time is now only related to the pulling time of the moving iron core, and not to the return time of the moving iron core.

[0056] See Figure 18 In this embodiment, the driving section 2' includes two driving sections 21A and 21B, which drive the same driving disk 22 and are respectively disposed on both sides of the driving disk 22 along the radial direction. Furthermore, by setting the operating timing of the two driving sections 21A and 21B, for example, the driving pins opposite each other in the radial direction can be driven alternately, thereby causing the driving disk to rotate. Moreover, by appropriately setting the timing and duration of each driving section 21A and 21B along the driving and reset directions, a short pause of the moving contact link in the intermediate position as described above can be obtained, thus allowing sufficient time for any potential arc to extinguish. Furthermore, depending on the requirements of the changeover switch, the number of drivers can be further increased, which will not be elaborated further.

[0057] The exemplary implementation of the solution proposed in this disclosure has been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the spirit of this disclosure, and various combinations can be made to the various technical features and structures proposed in this disclosure without exceeding the protection scope of this disclosure, which is determined by the appended claims.

Claims

1. A changeover switch, comprising: The conversion part has: The first rotating component has a rotation input end, a rotation output end, and a first fixed rotating shaft; The second rotating component has a moving contact connecting rod, a rotating cavity, and a second fixed rotating shaft; The rotating output end is movably disposed in the rotating cavity, and when the rotating output end rotates around the first fixed rotating shaft, the rotating output end can push the rotating cavity to drive the moving contact connecting rod to reciprocate between the first position and the second position around the second fixed rotating shaft. The rotating cavity includes a first straight cavity, a second straight cavity, and an arc-shaped cavity that are interconnected. The arc-shaped cavity has a first arc-shaped sidewall and a second arc-shaped sidewall. The concave surfaces of the first arc-shaped sidewall and the second arc-shaped sidewall face each other, and the first straight cavity and the second straight cavity are respectively located at both ends of the arc-shaped cavity.

2. The changeover switch as described in claim 1, wherein, When the rotating output end is located in the first straight cavity and is pushed to move, the moving contact rod moves from the first position toward the second position; When the rotating output end is located in the second straight cavity and is pushed to move, the moving contact rod moves from the second position toward the first position.

3. The changeover switch as described in claim 2, wherein, When the rotating output end contacts the first arc-shaped sidewall, the rotating output end moves along the first arc-shaped sidewall, and the moving contact connecting rod remains in the first position; When the rotating output end contacts the second arc-shaped sidewall, the rotating output end moves along the second arc-shaped sidewall, and the moving contact rod remains in the second position.

4. The changeover switch as described in claim 1, wherein, The moving contact rod is fixedly connected to the rotating cavity.

5. The changeover switch as described in any one of claims 1-4, further comprising at least one drive portion, each drive portion having a driver and a drive disk, the driver enabling the drive disk to rotate about a fixed axis; The drive disk includes a drive output section, which is connected to the rotation input end of the first rotating member to transmit the rotational motion of the drive disk to the rotation input end.

6. The changeover switch as described in claim 5, wherein, The driver includes a drive rod capable of reciprocating along the driving direction and a reset direction opposite to the driving direction, and an actuator connected to the drive rod; During the movement of the drive rod along the driving direction, the drive disk is driven by the actuator; during the movement of the drive rod along the reset direction, the drive disk is not driven by the actuator, and the moving contact link remains in the intermediate position between the first position and the second position.

7. The changeover switch as claimed in claim 6, wherein, The drive disk includes multiple drive pins, and the actuator can sequentially drive each of the multiple drive pins during the movement of the drive rod in the driving direction to cause the drive disk to rotate. One of the plurality of drive pins is configured to be connected to the drive output portion of the first rotating member.

8. The changeover switch as claimed in claim 7, wherein, The actuator is configured as a rotatable actuator connected to one end of the drive rod, such that: When the drive rod moves in the driving direction, the rotatable actuator is in the initial state and can engage and drive one of the plurality of drive pins without rotation. When the drive rod moves in the reset direction, the corresponding other of the plurality of drive pins interacts with the rotatable actuator and causes the rotatable actuator to rotate to enter the rotation state, and the corresponding other of the plurality of drive pins is not driven by the rotatable actuator.

9. The changeover switch as claimed in claim 8, wherein, A torsion spring is provided between the rotatable actuator and the drive rod so that the rotatable hook can be reset from the rotating state to the initial state.

10. The changeover switch as claimed in claim 6, wherein, The drive rod is configured as a moving iron core that can be electromagnetically driven, and the drive rod is configured as a moving iron core; The driver also includes a reset spring that enables the moving iron core to move in the reset direction.

11. The switch as recited in claim 7, wherein, The drive disc includes four drive pins evenly arranged along the circumference of the drive disc.

12. The changeover switch as claimed in claim 7, wherein, The at least one drive component further includes an energy storage spring, which is sleeved on a rotatable rod, the end of which is provided with a receiving portion capable of receiving each of the plurality of drive pins; Each of the plurality of drive pins compresses the energy storage spring through the receiving portion during a first rotation range in its rotation process, and is pushed by the energy storage spring through the receiving portion during a second rotation range in its rotation process, and continues to rotate.

13. The changeover switch as claimed in claim 5, wherein, The at least one driving part includes two driving parts, which are respectively arranged on both sides of the driving disk along the radial direction of the driving disk and alternately cause the driving disk to rotate.

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