Actuating mechanism and change-over switch
By using a stop and limit structure in conjunction with the dual power transfer switch to lock the output component, the overshoot problem caused by contact inertia impact is solved, thus improving the safety and reliability of the transfer switch.
Patent Information
- Application Number
- CN202511666506.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2025-12-16
AI Technical Summary
When the existing dual-power transfer switch switches are switched to the closed position, the inertial impact generated by the rotation of the contacts causes overshoot of the output components, which may lead to short circuit and burnout. The failure of the stop mechanism poses a safety hazard.
The system employs a linkage between a stop and a limiting structure. The stop locks the output component in the dual-position state, and the limiting structure limits the locking direction of the stop to prevent overshoot of the output component.
It effectively prevents the main power supply/backup power supply from overshooting to the backup power supply/main power supply position when it is in the disconnect position, avoiding short circuit and burnout, and improving the safe operation of the transfer switch.
Smart Images
Figure CN121148935A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of low-voltage electrical apparatus, in particular to an actuator and a transfer switch. BACKGROUND
[0002] The double power transfer switch is an electrical device for realizing automatic switching of the normal power supply and the standby power supply, and is mainly used for guaranteeing continuous power supply of important loads. The normal and standby closing positions are generally realized by rotation of the same output member. When the closing position is switched to the double-break position, the inertia impact of the contact rotation will cause the output member to continue to rotate, and then the normal power supply / standby power supply will overshoot to the standby power supply / normal power supply position when reaching the open position, resulting in short circuit and burning. In order to solve this problem, a stop mechanism is usually used to prevent this phenomenon. However, the stop mechanism sometimes fails to stop due to the structure setting problem, and cannot well prevent the above-mentioned overshoot phenomenon, which brings certain safety hazards to the transfer switch. SUMMARY
[0003] The purpose of the embodiment of the present application is to provide an actuator and a transfer switch, which can effectively guarantee the locking of the output member in the double-break state, and further guarantee the safe operation of the transfer switch.
[0004] In one aspect of the embodiment of the present application, an actuator is provided, which comprises a mechanism side plate, an input member and an output member are arranged on the mechanism side plate in a transmission connection manner, the input member and the output member are used for connecting a power system and a contact system respectively, a stop member is rotatably arranged on the mechanism side plate, the stop member is linked with the output member, the stop member is used for locking the output member in a double-break state, and a limiting structure is further arranged between the stop member and the mechanism side plate, and is used for limiting the locking direction of the stop member.
[0005] Optionally, the limiting structure comprises a stop bent portion arranged on the mechanism side plate, a limiting surface is formed on the end portion of the stop member facing the stop bent portion, and the limiting surface is limited by the end surface of the stop bent portion.
[0006] Optionally, the limiting surface is located directly below the rotation shaft center of the stop member.
[0007] Optionally, a limiting portion is arranged on the side of the stop member facing the mechanism side plate, a stop groove is arranged on the mechanism side plate, and the limiting portion is clamped in the stop groove. A first stop portion is formed on the end portion of the stop member facing the output member, a second stop portion is formed on the output member, and the first stop portion and the second stop portion are abutted to realize the locking of the output member by the stop member.
[0008] Optionally, an unlocking shaft is slidably provided on the side plate of the mechanism, and the side of the stop member facing the unlocking shaft forms an unlocking part. When the stop member is unlocked, the unlocking shaft is driven to move. The unlocking shaft drives the stop member to rotate by driving the unlocking part of the stop member, so as to release the blocking state between the stop member and the output member and unlock the output member.
[0009] Optionally, the input component is provided with a driving part, the driving part including a cam, the cam driving the unlocking shaft to slide.
[0010] Optionally, the mechanism side plate includes a first side plate and a second side plate arranged in parallel. A balance bar is also provided between the first side plate and the second side plate. The balance bar is provided with a first elongated hole for the unlocking shaft to pass through. A second elongated hole is provided on both the first side plate and the second side plate. The two ends of the unlocking shaft are located in the second elongated hole of the first side plate and the second elongated hole of the second side plate, respectively.
[0011] Optionally, a return spring is also included, which is disposed on the stop member. The two ends of the return spring are respectively connected to the stop member and the side plate of the mechanism, and the return spring causes the stop member to return to the locked position.
[0012] Optionally, there are four stops, with two stops forming a group and located opposite each other on both sides of the output member along the first direction. The two groups of stops are located on both sides of the output member along the second direction, and the two groups of stops are connected by an elastic member. The first direction is perpendicular to the second direction.
[0013] In another aspect of this application, a changeover switch is provided, comprising: the aforementioned actuator, and a contact system connected to the actuator.
[0014] The actuator and changeover switch provided in this application embodiment have a stop member that can lock the output component in a dual-power changeover state. The actuator of this application is applied to a dual-power changeover switch, controlling the contact system to switch between the primary power supply and the backup power supply. To prevent the output component from continuing to rotate due to the inertial impact generated by the rotation of the contact system in the dual-power-off state, a stop member is used to lock the output component in the dual-power-off state. This prevents short circuits and burnouts caused by the primary power supply / backup power supply overshooting to the backup power supply / primary power supply position when it reaches the off position. A limiting structure is also provided between the stop member and the side plate of the mechanism. This limiting structure limits the locking direction of the stop member, enabling it to effectively lock the output component and avoid locking failure. This effectively prevents the primary power supply / backup power supply from overshooting to the backup power supply / primary power supply position when it reaches the off position, thus avoiding short circuits and burnouts and improving the safe operation of the changeover switch. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is one of the schematic diagrams of the actuator structure provided in the embodiments of this application; Figure 2 This is the second schematic diagram of the actuator structure provided in the embodiments of this application; Figure 3 This is the third schematic diagram of the actuator structure provided in the embodiments of this application; Figure 4a , Figure 4b This is a schematic diagram of the stop structure of the actuator provided in the embodiments of this application; Figure 5 This is a schematic diagram of the second side plate structure of the actuator provided in the embodiments of this application; Figure 6 This is a schematic diagram of the output structure of the actuator provided in the embodiments of this application; Figure 7 This is a schematic diagram of the balance bar structure of the actuator provided in the embodiments of this application; Figure 8 This is a partial structural schematic diagram of the actuator provided in the embodiments of this application; Figures 9a to 9d This is a diagram illustrating the tripping process on the output side of the actuator provided in an embodiment of this application; Figures 10a to 10d This is a diagram illustrating the closing process on the output side of the actuator provided in an embodiment of this application; Figures 11a to 11d This is a diagram illustrating the closing process on the input side of the actuator provided in an embodiment of this application; Figure 12 This is a schematic diagram of the changeover switch structure provided in the embodiments of this application.
[0017] Icons: 10-Actuator; 100-Mechanism side plate; 101-First side plate; 102-Second side plate; 102a-Stop bend; 102b-Stop shaft; 102c-Stop groove; 102d-Second elongated hole; 110-Stop component; 110a-Mounting part; 110b-Unlocking part; 110c-Limiting surface; 110d-First stop part; 110e-First inclined surface; 110f-Connecting part; 110g-Limiting part; 120-Unlocking shaft; 130-Output component; 130a-Second stop part; 130b-Second inclined surface; 140-Input component; 140a-Cam; 150-Balance bar; 150a-First elongated hole; 160-Elastic component; 170-Energy storage component; 20-Contact system; F1-First direction; F2-Second direction; O-Shaft center. Detailed Implementation
[0018] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.
[0019] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0020] It should also be noted that, unless otherwise explicitly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0021] The existing stop and limit method generally uses a single shaft to directly cooperate with the output component 130 for limit and stop. After a period of operation, the single shaft may deform or shift, causing the locking function of the output component 130 to fail. This cannot effectively prevent the situation where the main power supply / backup power supply overshoots to the backup power supply / main power supply position when it reaches the disconnect position.
[0022] In view of this, please refer to Figure 1As shown, this application embodiment provides an actuator 10, including: a mechanism side plate 100, on which an input component 140 and an output component 130 are provided for transmission connection. The input component 140 and the output component 130 are also used to connect a power system and a contact system 20 respectively. A stop component 110 is also rotatably provided on the mechanism side plate 100. The stop component 110 and the output component 130 are linked. The stop component 110 is used to lock the output component 130 in a double-split state. A limiting structure is also provided between the stop component 110 and the mechanism side plate 100 to limit the locking direction of the stop component 110.
[0023] The side plate 100 of the mechanism is a load-bearing structure, such as Figure 2 , Figure 3 As shown, the mechanism side plate 100 of this application includes a first side plate 101 and a second side plate 102 that are opposite to and parallel to each other along a third direction. An input component 140 is disposed on the first side plate 101, and an output component 130 is disposed on the second side plate 102. The input component 140 and the output component 130 are disposed opposite to each other to be connected to the power system and the contact system 20, respectively. The power system drives the input component 140 to rotate, and the input component 140 drives the output component 130 to rotate, thereby driving the contact system 20 connected to the output component 130 to operate to realize the opening and closing of the circuit breaker.
[0024] A stop 110 is rotatably mounted on the side plate 100 of the mechanism. Specifically, the stop 110 is located on the second side plate 102 where the output member 130 is mounted. Figure 4a , Figure 5 As shown, a stop shaft 102b is provided on the second side plate 102, and a mounting part 110a is provided on the stop member 110. The mounting part 110a forms a mounting hole, which cooperates with the shaft hole of the stop shaft 102b to allow the stop member 110 to be rotatably mounted on the second side plate 102.
[0025] The stop member 110 can lock the output member 130 in the double-open state. The actuator 10 of this application is used in a dual power supply changeover switch, which can control the contact system 20 to switch between the normal power supply and the backup power supply. In order to prevent the output member 130 from continuing to rotate due to the inertial impact generated by the rotation of the contact system 20 in the double-open state, the stop member 110 is used to lock the output member 130 in the double-open state. This can prevent the short circuit and burnout caused by the normal power supply / backup power supply overshooting to the backup power supply / normal power supply position when it reaches the disconnected position.
[0026] In addition, a limiting structure is provided between the stop member 110 and the mechanism side plate 100 of this application. The locking direction of the stop member 110 can be limited by the limiting structure, so that the stop member 110 can effectively lock the output member 130 and avoid the phenomenon of locking failure. In this way, it can effectively prevent the main power supply / backup power supply from overshooting to the backup power supply / main power supply position when it reaches the disconnect position, so as to avoid short circuit and burnout caused by this, and improve the safe use performance of the changeover switch.
[0027] Specifically, the limiting structure includes a stop bend 102a disposed on the side plate 100 of the mechanism, and a limiting surface 110c is formed at the end of the stop member 110 facing the stop bend 102a, and the limiting surface 110c abuts against the end face of the stop bend 102a for limiting.
[0028] like Figure 5 As shown, the stop bend 102a is formed by a protruding bend on the second side plate 102, and the stop bend 102a is set perpendicular to the second side plate 102. When the stop member 110 is provided on the second side plate 102, the stop member 110 has a limiting surface 110c facing the stop bend 102a. The limiting surface 110c is located directly below the rotation axis center O of the stop member 110, and the rotation axis center O is located at the center of the mounting hole of the mounting portion 110a of the stop member 110. When the stop member 110 locks and limits the output member 130, the limiting surface 110c and the stop bend 102a abut against the end face of the stop member 110, thereby limiting the locking range of the stop member 110 by the stop bend 102a. In this way, the locking direction of the stop member 110 on the output member 130 is limited, avoiding the problem of locking failure caused by the impact deformation of the mounting part 110a in the prior art.
[0029] In addition, such as Figure 4b As shown, the stop member 110 is provided with a limiting part 110g on the side facing the mechanism side plate 100, and the mechanism side plate 100 is provided with a stop groove 102c, and the limiting part 110g is engaged in the stop groove 102c.
[0030] For example, a square stop groove 102c is formed on the second side plate 102. Correspondingly, a square limiting part 110g is provided on the stop member 110 facing the back of the second side plate 102. The limiting part 110g protrudes from the surface of the stop member 110 to engage with the stop groove 102c of the second side plate 102, thereby limiting the position of the stop member 110 on the second side plate 102.
[0031] When the stop member 110 locks the output member 130, a first stop portion 110d is formed at the end of the stop member 110 facing the output member 130, and a stop portion 110d is formed on the output member 130. Figure 6 The second stop 130a shown abuts against the first stop 110d and the second stop 130a.
[0032] The first stop portion 110d is located at the end of the stop member 110 facing the output member 130, and the side of the first stop portion 110d facing the output member 130 forms a first inclined surface 110e. Correspondingly, the second stop portion 130a is a protrusion formed on the output member 130, and the side of the protrusion facing the first stop portion 110d forms a second inclined surface 130b. Through the abutting action of the first inclined surface 110e of the first stop portion 110d and the second inclined surface 130b of the second stop portion 130a, the stop member 110 locks the output member 130.
[0033] On the other hand, an unlocking shaft 120 is slidably provided on the side plate 100 of the mechanism. The side of the stop member 110 facing the unlocking shaft 120 forms an unlocking part 110b. When the stop member 110 is unlocked, the unlocking shaft 120 is driven to slide. The unlocking shaft 120 drives the stop member 110 to rotate by driving the unlocking part 110b of the stop member 110, so as to release the abutment state between the stop member 110 and the output member 130 and unlock the output member 130.
[0034] For example, the unlocking shaft 120 is located above the output component 130, and the stop component 110 is biased towards the locked position under the action of the return spring. When unlocking is required, the unlocking shaft 120 is driven to move, thereby driving the unlocking part 110b of the stop component 110 to rotate the stop component 110, causing the first stop part 110d of the stop component 110 and the second stop part 130a of the output component 130 to separate. The stop component 110 moves from the locked position to the unlocked position, and the stop component 110 releases its abutment against the output component 130, realizing the separation and unlocking of the stop component 110 and the output component 130. After unlocking, the output component 130 can be activated to perform closing.
[0035] When the unlocking shaft 120 is driven to slide, its driving force is provided by the driving part of the input element 140; for example, such as Figure 8 As shown, the driving part of the input component 140 is a cam 140a. After the input component moves a certain distance, the cam 140a begins to abut against the unlocking shaft 120, thereby driving the unlocking shaft 120 to slide. The stop component 110 rotates to release the lock on the output component 130. Furthermore, the mechanism side plate 100 is also connected to a balance bar 150. For example, the balance bar 150 is located between the first side plate 101 and the second side plate 102, and is rotatably connected perpendicularly to the plane of the two side plates; Figure 7As shown, the balance bar 150 is provided with a first elongated hole 150a for the unlocking shaft 120 to pass through. The first side plate 101 and the second side plate 102 are respectively provided with a second elongated hole 102d. The two ends of the unlocking shaft 120 are located in the second elongated holes 102d of the two side plates and slide synchronously to ensure that the two ends of the unlocking shaft 120 are on the same straight line along its axis in the third direction (the relative direction of the two side plates). This avoids the unlocking shaft 120 from deforming and causing the stop member 110 to fail to stop the output member 130, or the unlocking shaft 120 failing to move in time to drive the stop member 110 to unlock.
[0036] Reference Figure 9a As shown, there are four stop members 110 in this application. Two stop members 110 are arranged in a group and are located opposite each other on both sides of the output member 130 along the first direction F1. The two groups of stop members 110 are located on both sides of the output member 130 along the second direction F2, which makes the locking more reliable. Furthermore, the two groups of stop members 110 are connected by an elastic member 160. The first direction F1 is perpendicular to the second direction F2 and the third direction.
[0037] like Figure 4a , Figure 9a As shown, the stop member 110 is provided with a connecting portion 110f. The connecting portions 110f of the two sets of stop members 110 are arranged opposite each other along the second direction F2. The two ends of the elastic member 160 are respectively connected to the connecting portions 110f of the two sets of stop members 110, thus connecting the two sets of stop members 110. For example, the elastic member 160 can be a tension spring to achieve counter-tensioning of the two sets of stop members 110.
[0038] Two sets of four stop members 110 surround the output member 130. The output member 130 has two second stop portions 130a arranged opposite each other along the second direction F2. Taking the second stop portion 130a above the second direction F2 as an example, two stop members 110 of the same group are arranged on both sides of one second stop portion 130a of the output member 130 along the first direction F1. The first stop portion 110d of each of the two stop members 110 abuts against the second inclined surfaces 130b on both sides of the second stop portion 130a of the output member 130 to lock the output member 130.
[0039] Similarly, two unlocking shafts 120 and two balance bars 150 are set along the second direction F2. The balance bars 150 above the second direction F2 and the unlocking shafts 120 act on the two stop members 110 above them; the balance bars 150 below the second direction F2 and the unlocking shafts 120 act on the two stop members 110 below them.
[0040] In other embodiments, a return spring (not shown) is also included, which resets the stop 110 and moves the stop 110 to the locked position.
[0041] Each of the four stop members 110 is provided with a return spring. The two ends of the return spring are respectively connected to the corresponding stop member 110 and the mechanism side plate 100 (second side plate 102) to realize the reset of each stop member 110.
[0042] When the output component 130 moves, such as Figures 9a to 9d As shown, when the circuit is closed, the power system drives the input component 140 to rotate. At this time, the output component 130 is locked and limited by the stop component 110 and does not move synchronously with the input component 140. After the input component 140 moves independently for a certain period of time, it simultaneously drives the energy storage component 170 to store energy until the cam 140a on the input component 140 abuts against the unlocking shaft 120. The unlocking shaft 120 begins to slide and drives the stop component 110 to rotate, thereby unlocking the stop component 110 and the output component 130. The output component 130 then begins to rotate to close the circuit.
[0043] When the circuit breaker is tripped, after the input component 140 rotates a certain distance, the drive part (cam 140a) of the input component 140 disengages from the unlocking shaft 120, and the stop component 110 returns to its initial position under the action of the reset spring. Thus, the stop component 110 pushes the unlocking shaft 120 and the balance bar 150 back to their initial positions. The input component 140 continues to move until the energy storage component 170 releases energy through the neutral point and drives the output component 130 to move.
[0044] like Figure 11d As shown, there are two sets of energy storage components 170, which are symmetrically arranged on both sides of the input component 140. The two sets of energy storage components 170 are the main energy storage component and the backup energy storage component, respectively, to correspond to the energy storage operation of the main power supply and the backup power supply. The specific structure and energy storage principle of the energy storage component 170 can be referred to the conventional settings, and will not be described in detail here.
[0045] When closing the circuit breaker, if Figures 10a to 10d , Figures 11a to 11d As shown, under the action of the external power system, the input component 140 moves from the disconnected position to the normal power supply / backup power supply. After the input component 140 rotates through a certain angle, its drive unit drives the unlocking shaft 120 to move to the unlocking position. Then, the unlocking shaft 120 separates from the unlocking part 110b of the stop component 110, and the first stop part 110d of the stop component 110 and the second stop part 130a of the output component 130 are released from their abutting state. The output component 130 can then move to push open the stop component 110 to complete the unlocking. After unlocking, the energy storage component 170 releases energy through the neutral point and drives the output component 130 to move, causing the contact system 20 to close to the normal power supply / backup power supply.
[0046] Based on this, such as Figure 12 As shown in the embodiments of this application, a changeover switch is also disclosed, including an actuator 10 and a contact system 20 as described above.
[0047] The input component 140 is driven to rotate, thereby driving the output component 130 to rotate. The output component 130 drives the contact system 20 connected to it to operate in order to achieve opening and closing of the circuit breaker.
[0048] The changeover switch in this application is a dual-power changeover switch, and the output component 130 can control the contact system 20 to switch between the normal power supply and the backup power supply. Since the stop component 110 of the actuator 10 can lock the output component 130 in the dual-open state, it prevents the inertial impact generated by the rotation of the contact system 20 in the dual-open state from causing the output component 130 to continue to rotate, thus preventing short circuit and burnout caused by overshooting to the backup power supply / normal power supply position when the normal power supply / backup power supply reaches the disconnected position.
[0049] Furthermore, by setting a limiting structure between the stop member 110 and the mechanism side plate 100, the locking direction of the stop member 110 is limited, so that the stop member 110 can effectively lock the output member 130, avoiding the phenomenon of locking failure. In this way, overshoot in the above-mentioned dual-state can be effectively prevented, and short circuit burnout caused by it can be avoided, thereby improving the safe use performance of the changeover switch.
[0050] This changeover switch has the same structure and beneficial effects as the actuator 10 in the foregoing embodiments. The structure and beneficial effects of the actuator 10 have been described in detail in the foregoing embodiments and will not be repeated here.
[0051] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.
Claims
1. An actuator (10), characterized in that, include: The mechanism side plate (100) is provided with an input component (140) and an output component (130) for transmission connection. The input component (140) and the output component (130) are also used to connect the power system and the contact system (20) respectively. The mechanism side plate (100) is also rotatably provided with a stop component (110). The stop component (110) and the output component (130) are linked. The stop component (110) is used to lock the output component (130) in the double-split state. A limiting structure is also provided between the stop component (110) and the mechanism side plate (100) to limit the locking direction of the stop component (110).
2. The actuator (10) according to claim 1, characterized in that, The limiting structure includes a stop bend (102a) disposed on the side plate (100) of the mechanism, and the end of the stop member (110) facing the stop bend (102a) forms a limiting surface (110c), and the limiting surface (110c) abuts against the end face of the stop bend (102a) for limiting.
3. The actuator (10) according to claim 2, characterized in that, The limiting surface (110c) is located directly below the rotation center (O) of the stop (110).
4. The actuator (10) according to claim 1, characterized in that, The stop member (110) is provided with a limiting part (110g) on the side facing the mechanism side plate (100), and the mechanism side plate (100) is provided with a stop groove (102c), and the limiting part (110g) is engaged in the stop groove (102c); The stop member (110) forms a first stop portion (110d) at the end facing the output member (130), and a second stop portion (130a) is formed on the output member (130). The first stop portion (110d) and the second stop portion (130a) abut against each other to lock the output member (130) with the stop member (110).
5. The actuator (10) according to any one of claims 1 to 4, characterized in that, An unlocking shaft (120) is slidably disposed on the side plate (100) of the mechanism. An unlocking part (110b) is formed on the side of the stop (110) facing the unlocking shaft (120). When the stop (110) is unlocked, the unlocking shaft (120) is driven to move. The unlocking shaft (120) drives the stop (110) to rotate by driving the unlocking part (110b) of the stop (110) to release the abutment state between the stop (110) and the output (130) and unlock the output (130).
6. The actuator (10) according to claim 5, characterized in that, The input component (140) is provided with a driving part, which includes a cam (140a) that drives the unlocking shaft (120) to slide.
7. The actuator (10) according to claim 5, characterized in that, The mechanism side plate (100) includes a first side plate (101) and a second side plate (102) arranged in parallel. A balance bar (150) is also provided between the first side plate (101) and the second side plate (102). The balance bar (150) is provided with a first elongated hole (150a) for the unlocking shaft (120) to pass through. The first side plate (101) and the second side plate (102) are respectively provided with a second elongated hole (102d). The two ends of the unlocking shaft (120) are located in the second elongated hole (102d) of the first side plate (101) and the second elongated hole (102d) of the second side plate (102), respectively.
8. The actuator (10) according to any one of claims 1 to 4, characterized in that, It also includes a return spring, which is disposed on the stop (110). The two ends of the return spring are respectively connected to the stop (110) and the side plate (100) of the mechanism. The return spring causes the stop (110) to return to the locked position.
9. The actuator (10) according to any one of claims 1 to 4, characterized in that, There are four stop members (110). Two stop members (110) are in a group and are located opposite each other on both sides of the output member (130) along the first direction (F1). The two groups of stop members (110) are located on both sides of the output member (130) along the second direction (F2). The two groups of stop members (110) are connected by an elastic member (160). The first direction (F1) is perpendicular to the second direction (F2).
10. A changeover switch, characterized in that, It includes the actuator (10) as described in any one of claims 1 to 9, and the contact system (20) connected to the actuator (10).