Clutch type manually operated mechanism

Abstract

The application relates to a clutch type manual operating mechanism, relates to the field of multi-rotation electric executing mechanisms, and comprises a shell, a central shaft, an electric drive mechanism, a manual drive mechanism and a transmission shaft, an input combination one is slidably connected on the electric drive mechanism, an input combination two is slidably connected on the manual drive mechanism, the transmission shaft comprises a clutch shaft and a worm shaft, the clutch shaft penetrates through the worm shaft and is clamped in the worm shaft, the central shaft is in transmission connection with the transmission shaft, the clutch shaft is used for sliding in the worm shaft along the length direction of the worm shaft, a hand drive coupling is arranged at one end of the worm shaft, an electric drive coupling is connected to the other end of the worm shaft, the input combination one is used for sliding and clamping with the electric drive coupling, the input combination two is used for sliding and clamping with the hand drive coupling, one end of the clutch shaft abuts against the input combination one, and the other end of the clutch shaft abuts against the input combination two. The application has the effect of reducing the probability that the electric drive mechanism and the manual drive mechanism are simultaneously connected on the transmission shaft.

Description

Technical Field

[0001] This application relates to the field of multi-turn electric actuators, and more particularly to a clutch-type manual operating mechanism. Background Technology

[0002] A multi-turn electric actuator is a device used to drive valve movement. The multi-turn electric actuator is connected to the valve's drive shaft. By driving the drive shaft to rotate, it can cause the valve core to move, thereby achieving the effect of controlling the opening and closing degree of large-size valves.

[0003] The existing multi-turn electric actuator includes a housing, a central shaft, an electric drive mechanism, a manual drive mechanism, and a transmission shaft. The central shaft and the transmission shaft are rotatably connected inside the housing and are connected by transmission. One end of the central shaft passes through the housing and extends out. The central shaft is used to connect to the valve drive shaft. The electric drive mechanism and the manual drive mechanism are respectively located on both sides of the transmission shaft. The user controls the connection between the electric drive mechanism and the manual drive mechanism and the end of the transmission shaft to achieve the effect of electric or manual drive of the transmission shaft to rotate. It can control the opening and closing of the valve in special circumstances of power failure.

[0004] The aforementioned technical solutions have the following drawbacks: during use, the electric drive mechanism and the manual drive mechanism may be connected to the drive shaft at the same time. In this case, the action of the electric drive mechanism will drive the action of the manual drive mechanism, which poses a threat to the personal safety of the user. Utility Model Content

[0005] To reduce the probability of both the electric drive mechanism and the manual drive mechanism being connected to the drive shaft at the same time, this application provides a clutch-type manual operating mechanism.

[0006] The clutch-type manual operating mechanism provided in this application adopts the following technical solution: A clutch-type manual operating mechanism includes a housing, a central shaft, an electric drive mechanism, a manual drive mechanism, and a transmission shaft. The central shaft and the transmission shaft are rotatably connected in the housing. The electric drive mechanism and the manual drive mechanism are respectively located at both ends of the transmission shaft. An input coupling is slidably connected to the electric drive mechanism, and an input coupling is slidably connected to the manual drive mechanism. The transmission shaft includes a clutch shaft and a worm shaft. The clutch shaft passes through and is engaged in the worm shaft. A worm wheel is provided on the central shaft and meshes with the worm shaft. The central shaft and the transmission shaft are connected in a driving connection. The clutch shaft is used to slide along the length of the worm shaft in the worm shaft. A manual drive coupling is provided at one end of the worm shaft, and an electric drive coupling is connected to the other end. The first input coupling is used to slide and engage with the electric drive coupling, and the second input coupling is used to slide and engage with the manual drive coupling. One end of the clutch shaft abuts against the first input coupling, and the other end abuts against the second input coupling. The length of the clutch shaft is greater than the distance between the first and second input couplings.

[0007] By adopting the above technical solution, a drive shaft and a central shaft are installed inside the housing. The electric drive mechanism and the manual drive mechanism drive the drive shaft to rotate, thereby enabling the central shaft to rotate and causing the valve body to open and close. By installing a manual drive coupling and an electric drive coupling on both sides of the drive shaft, the electric drive mechanism can operate and engage with the electric drive coupling. At this time, the electric drive mechanism can drive the drive shaft to rotate. When the manual drive mechanism operates and engages with the manual drive coupling, it can drive the drive shaft to rotate. By installing a clutch shaft in the middle of the worm shaft, the clutch shaft can slide in the worm shaft. When the electric drive mechanism operates and connects to the drive shaft, it can push the clutch shaft, causing the clutch shaft to push the manual drive mechanism, thereby disengaging the input coupling two from the manual drive coupling. This makes it difficult for input coupling one and input coupling two to be simultaneously engaged at both ends of the drive shaft, reducing the probability of the electric drive mechanism and the manual drive mechanism being simultaneously connected to the drive shaft.

[0008] Optionally, the electric drive mechanism includes a motor and a spring. The motor housing is fixed on the outer shell. The output shaft of the motor is coaxially connected to the transmission shaft. An input connector is disposed on the output shaft of the motor. A spring is disposed on the output shaft of the motor. One end of the spring is fixed on the output shaft of the motor, and the other end abuts against the input connector.

[0009] By adopting the above technical solution, by setting a spring on the motor, the spring can push the input coupling. Under natural conditions, the input coupling can always be engaged with the electric drive coupling, thereby reducing the probability that the input coupling will slide on the motor output shaft when the motor drives the transmission shaft to rotate, and reducing the probability that the input coupling will disengage from the transmission shaft.

[0010] Optionally, the manual drive mechanism includes a handwheel and a second spring. The handwheel is rotatably connected to the housing, the input coupling is slidably connected to the handwheel, and one end of the second spring abuts against the handwheel and the other end abuts against the input coupling.

[0011] By adopting the above technical solution, the user can rotate the handwheel on the outer casing to drive the input coupling to rotate. When the input coupling is engaged with the drive shaft, the handwheel can drive the drive shaft to rotate. The spring keeps the input coupling connected to the hand drive coupling, which reduces the chance of the drive shaft and handwheel disengaging when the drive shaft is manually driven to rotate.

[0012] Optionally, a rotating shaft is rotatably connected to the housing, the rotating shaft passes through the housing, one end of the rotating shaft is connected to a shift fork, and the other end is connected to a clutch handle. The clutch handle is located outside the housing, and the shift fork is located inside the housing. The shift fork is used to abut against the input connector and push the input connector.

[0013] By adopting the above technical solution, and by setting a rotating shaft on the outer casing, the user can pull the clutch handle to make the shift fork swing inside the casing. By making the shift fork push the input coupling one, the input coupling one can be moved away from the electric drive coupling, thereby disconnecting the motor from the drive shaft. This achieves the effect of disconnecting the electric drive mechanism from the drive shaft. At this time, the input coupling one compresses the spring one, and the spring two can release elastic potential energy and push the input coupling two, so that the input coupling two automatically connects with the drive shaft, achieving the effect of switching the drive shaft drive mode.

[0014] Optionally, a clutch elastic plate is provided inside the housing. The clutch elastic plate includes a distal plate, a proximal plate, and an inclined plate. One end of the inclined plate is connected to the distal plate, and the other end is connected to the proximal plate. The distal plate is fixed inside the housing. The input coupling includes a locking block, a base, and a locking plate. The base is a cylindrical structure. The locking block is fixed at one end of the base, and the locking plate is fixed at the other end of the base. The locking block is used to engage the electric drive coupling. An eccentric groove is provided on the end face of the base. The proximal plate is used to abut against the end face of the base and slide along the eccentric groove to the side wall of the base.

[0015] By adopting the above technical solution, a clutch elastic plate is set inside the housing, allowing the clutch elastic plate to abut against the end face of the mounting block on the base. When the shift fork pushes the input coupling one, the input coupling one moves away from the electric drive coupling. When the shift fork returns to its original position, spring one pushes the input coupling one, and the end face of the base abuts against the near end plate, making it difficult for the mounting block to engage with the electric drive coupling, and thus making it difficult for the electric drive mechanism to connect with the drive shaft. The user can drive the drive shaft to rotate through the manual drive mechanism. The elastic force of spring one is greater than that of spring two. When the motor is powered on and the manual drive mechanism is connected to the drive shaft, the motor drives the input coupling one to rotate. As the input coupling one rotates, the end face of the base 322 rotates until the near end plate slides onto the side wall of the base along the eccentric groove. At this time, spring one can push the input coupling one to move, thereby connecting the motor with the drive shaft. Spring one can overcome the elastic force of spring two and push the clutch shaft, causing the input coupling two to disengage from the drive shaft. At this time, the handwheel is disengaged from the drive shaft, and the risk of injury to the user from the handwheel is low.

[0016] Optionally, a clearance groove is provided on the side wall of the substrate. When the proximal plate is located in the clearance groove, the input connector and the clutch elastic plate disengage.

[0017] By adopting the above technical solution, by opening a clearance groove on the side wall of the base, when the input coupling is connected to the electric drive coupling, the clutch elastic plate and the input coupling do not contact each other when the motor drives the transmission shaft to rotate, thereby reducing the wear on the clutch elastic plate and the input coupling.

[0018] Optionally, a micro switch assembly is provided inside the housing. The micro switch assembly includes a contact switch, a slider, and a return spring. The contact switch is connected in the power supply circuit of the motor. The slider is slidably connected inside the housing. One end of the return spring abuts against the inside of the slider, and the other end is fixed inside the housing. In its natural state, the slider is disengaged from the contact switch. When the drive shaft is disengaged from the input connector, the input connector pushes the slider and makes the slider contact the contact switch. The contact switch is used to control the motor to be powered on and off.

[0019] By adopting the above technical solution, a micro switch assembly is installed inside the housing, which is used to control the on / off state of the motor. When the user controls the shift fork to disengage the input coupling and the electric drive coupling, the input coupling can push the slider to move, causing the slider to engage with the contact switch. At this time, the motor is de-energized, achieving the effect of energy saving.

[0020] Optionally, the slider has an arc groove, and a ball is disposed in the arc groove. The ball rolls and connects in the arc groove, and the ball is used to abut against the input connector.

[0021] By adopting the above technical solution, by opening an arc groove on the slider and setting a ball in the arc groove, the ball can extend out from the arc groove. When the input connector 1 abuts against the slider, the input connector 1 abuts against the ball. When the input connector 1 rotates and abuts against the ball, the ball can rotate with the input connector 1, thereby reducing the wear on the input connector 1 and the slider.

[0022] In summary, the beneficial technical effects of this application are as follows: 1. By setting a drive shaft and a central shaft inside the housing, the electric drive mechanism and the manual drive mechanism drive the drive shaft to rotate, thereby enabling the central shaft to rotate and thus causing the central shaft to open and close the valve body. By setting a manual drive coupling and an electric drive coupling on both sides of the drive shaft, the electric drive mechanism can operate and engage with the electric drive coupling. At this time, the electric drive mechanism can drive the drive shaft to rotate. When the manual drive mechanism operates and engages with the manual drive coupling, the manual drive mechanism can drive the drive shaft to rotate. By setting a clutch shaft in the middle of the worm shaft, the clutch shaft can slide in the worm shaft. When the electric drive mechanism operates and connects to the drive shaft, the electric drive mechanism can push the clutch shaft, causing the clutch shaft to push the manual drive mechanism, thereby disengaging the input coupling two from the manual drive coupling. This makes it difficult for input coupling one and input coupling two to be simultaneously engaged at both ends of the drive shaft, reducing the probability of the electric drive mechanism and the manual drive mechanism being simultaneously connected to the drive shaft. 2. By setting a rotating shaft on the housing, the user can pull the clutch handle to make the shift fork swing inside the housing. By making the shift fork push the input coupling one, the input coupling one can be moved away from the electric drive coupling, thereby disengaging the motor from the drive shaft. This achieves the effect of disengaging the electric drive mechanism from the drive shaft. At this time, the input coupling one compresses the spring one, and the spring two can release elastic potential energy and push the input coupling two, so that the input coupling two automatically connects to the drive shaft, achieving the effect of switching the drive shaft drive mode. 3. By setting a clutch elastic plate inside the housing, the clutch elastic plate can abut against the end face of the mounting block on the base. When the shift fork pushes the input coupling one, the input coupling one moves away from the electric drive coupling. When the shift fork returns to its original position, spring one pushes the input coupling one, and the end face of the base abuts against the near end plate, making it difficult for the mounting block to engage with the electric drive coupling, and thus making it difficult for the electric drive mechanism to connect with the drive shaft. The user can drive the drive shaft to rotate through the manual drive mechanism. The elastic force of spring one is greater than that of spring two. When the motor is powered on and the manual drive mechanism is connected to the drive shaft, the motor drives the input coupling one to rotate. As the input coupling one rotates, the end face of the base 322 rotates until the near end plate slides onto the side wall of the base along the eccentric groove. At this time, spring one can push the input coupling one to move, thereby connecting the motor with the drive shaft. Spring one can overcome the elastic force of spring two and push the clutch shaft, causing the input coupling two to disengage from the drive shaft. At this time, the handwheel is disengaged from the drive shaft, and the risk of injury to the user from the handwheel is low. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0024] Figure 2 This is a schematic diagram showing the connection relationship between the central shaft and the transmission shaft in an embodiment of this application.

[0025] Figure 3 This is a schematic diagram showing the positional relationship between the drive shaft, the electric drive mechanism, and the manual drive mechanism in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of the structure of the drive shaft according to an embodiment of this application.

[0027] Figure 5 This is a schematic diagram showing the positional relationship between the drive shaft and the electric drive mechanism when they are connected according to an embodiment of this application.

[0028] Figure 6 This is a schematic diagram of the structure of the input connector in an embodiment of this application.

[0029] Figure 7 This is a schematic diagram showing the positional relationship between the clutch elastic sheet and the input connector in an embodiment of this application.

[0030] Figure 8 This is a cross-sectional view of the manual drive mechanism according to an embodiment of this application.

[0031] Figure 9 This is a schematic diagram showing the connection relationship between the manual drive mechanism and the drive shaft in an embodiment of this application.

[0032] Figure 10 This is a schematic diagram of the overall structure of the micro switch assembly according to an embodiment of this application.

[0033] Figure 11 This is a schematic diagram of the slider structure according to an embodiment of this application.

[0034] Reference numerals: 1. Outer shell; 11. Clutch elastic plate; 111. Distal plate; 112. Proximal plate; 113. Inclined plate; 2. Central shaft; 21. Worm gear; 3. Electric drive mechanism; 31. Motor; 32. Input coupling one; 321. Locking block; 322. Base; 323. Locking plate; 324. Relief groove; 325. Eccentric groove; 33. Spring one; 4. Manual drive mechanism; 41. Handwheel; 4 2. Input coupling II; 43. Spring II; 5. Drive shaft; 51. Clutch shaft; 52. Worm shaft; 521. Hand-driven coupling; 522. Electric-driven coupling; 6. Micro switch assembly; 61. Contact switch; 62. Slider; 621. Ball bearing; 622. Arc groove; 623. Waist groove; 624. Fixing bolt; 63. Return spring; 71. Clutch handle; 72. Shift fork; 73. Rotating shaft. Detailed Implementation

[0035] The present application will be further described in detail below with reference to the accompanying drawings.

[0036] This application discloses a clutch-type manual operating mechanism, referring to... Figure 1 , Figure 2 and Figure 3 It includes a housing 1, a central shaft 2, an electric drive mechanism 3, a manual drive mechanism 4, and a transmission shaft 5. The central shaft 2 and the transmission shaft 5 are rotatably connected inside the housing 1. One end of the central shaft 2 extends out of the housing 1, and a worm gear 21 is coaxially connected to the central shaft 2. Figure 4The drive shaft 5 includes a clutch shaft 51 and a worm shaft 52. The clutch shaft 51 coaxially passes through the worm shaft 52 and engages with it. The worm shaft 52 is rotatably connected within the housing 1, and the clutch shaft 51 is used to slide within the worm shaft 52. The worm in the middle of the worm shaft 52 meshes with the worm wheel 21. The electric drive mechanism 3 and the manual drive mechanism 4 are respectively located on both sides of the housing 1, at opposite ends of the drive shaft 5. The electric drive mechanism 3 and the manual drive mechanism 4 can operate independently and are connected to the end of the worm shaft 52. When the electric drive mechanism 3 operates and connects to the worm shaft 52, it pushes the clutch shaft 51, causing the clutch shaft 51 to actuate the manual drive mechanism 4. This reduces the probability of both the manual drive mechanism 4 and the electric drive mechanism 3 being simultaneously connected to the drive shaft 5, improving safety.

[0037] Reference Figure 5 , Figure 6 and Figure 7 The electric drive mechanism 3 includes a motor 31, an input coupling 32, and a spring 33. The motor 31 housing is fixed to the outer casing 1. The output shaft of the motor 31 is coaxially arranged with the transmission shaft 5. The input coupling 32 is slidably connected to the output shaft of the motor 31. The spring 33 is sleeved on the output shaft of the motor 31, with one end fixed to the output shaft and the other end abutting against the input coupling 32. One end of the worm shaft 52 is fixed with a hand-driven coupling 521, and the other end is fixed with an electric-driven coupling 522. In its natural state, the spring 33 pushes the input coupling 32, causing the input coupling 32 to slide and engage with the electric-driven coupling 522. At this time, the motor 31 is connected to the transmission shaft 5, and the motor 31 drives the transmission shaft 5 and the central shaft 2 to rotate. When the clutch shaft 51 slides inside the worm shaft 52, the clutch shaft 51 can push the input coupling 32, causing the spring 33 to contract. At this time, the input coupling 32 is disengaged from the electric drive coupling 522, and the motor 31 can no longer drive the transmission shaft 5 to rotate.

[0038] Reference Figure 8 and Figure 9The manual drive mechanism 4 includes a handwheel 41, an input coupling 42, and a spring 43. The handwheel 41 is rotatably connected to the housing 1, and the input coupling 42 is rotatably connected inside the housing 1. One end of the spring 43 abuts against the handwheel 41, and the other end abuts against the input coupling 42. The input coupling 42 may be provided with a cylindrical structure, and the inner wall of the cylindrical structure has toothed grooves. The hand drive coupling 521 is provided with a gear, and the input coupling 42 can be sleeved on the hand drive coupling 521 and engaged with the hand drive coupling 521. In its natural state, spring 43 pushes input coupling 42, causing it to engage with the hand-drive coupling 521. The user can then drive the drive shaft 5 by turning handwheel 41. When input coupling 42 engages with the hand-drive coupling 521, it pushes the clutch shaft 51, causing it to push input coupling 32, thereby disengaging it from the electric drive coupling 522. The clutch shaft 51 serves a protective function, preventing the electric drive mechanism 3 and the manual drive mechanism 4 from being simultaneously connected to the drive shaft 5.

[0039] Reference Figure 10 and Figure 11 The housing 1 contains a micro switch assembly 6, which includes a contact switch 61, a slider 62, and a return spring 63. The contact switch 61 is located in the power circuit of the motor 31 and is fixed inside the housing 1 on the side away from the drive shaft 5 on the input coupling 32. The slider 62 is connected to the lower side of the contact switch 61 and is slidably connected inside the housing 1. The sliding direction of the slider 62 is parallel to the length direction of the drive shaft 5. When the manual drive mechanism 4 is connected to the drive shaft 5, the clutch shaft 51 actuates the input coupling 32, which pushes the slider 62, causing the slider 62 to trigger the contact switch 61, thereby cutting off the power to the motor 31 and achieving the effects of energy saving and protecting the motor 31. A return spring 63 is disposed within the slider 62. One end of the return spring 63 is fixed inside the housing 1, and the other end abuts against the slider 62. In its natural state, the return spring 63 pushes the slider 62, disengaging it from the contact switch 61. When the manual drive mechanism 4 disengages from the drive shaft 5, the spring 63 automatically pushes the input coupling 32, connecting it to the drive shaft 5. At this time, the slider 62 automatically moves away from the contact switch 61, allowing the motor 31 to be powered and run. By incorporating the micro switch assembly 6, safety during manual operation under power is enhanced.

[0040] Reference Figure 11The slider 62 has an arc groove 622, and a ball bearing 621 is disposed within the arc groove 622. The length direction of the arc groove 622 is vertical, and the cross-section of the arc groove 622 is an arc. The ball bearing 621 can be engaged and roll within the arc groove 622. When the input connector 32 is disengaged from the drive shaft 5, the input connector 32 abuts against the ball bearing 621 and pushes the slider 62 to move, thereby reducing the friction between the slider 62 and the input connector 32.

[0041] Reference Figure 11 The slider 62 has multiple grooves 623. The length direction of the grooves 623 is parallel to the length direction of the return spring 63. Fixing bolts 624 are provided in the grooves 623. The slider 62 is installed in the outer shell 1 by fixing bolts 624.

[0042] Reference Figure 2 and Figure 3 A rotating shaft 73 is provided on the outer casing 1. The rotating shaft 73 passes through and is rotatably connected to the outer casing 1. One end of the rotating shaft 73 is connected to a shift fork 72, and the other end is connected to a clutch handle 71. The clutch handle 71 is located outside the outer casing 1, and the shift fork 72 is located inside the outer casing 1. The user can move the clutch handle 71 to make the shift fork 72 swing inside the outer casing 1, thereby making the shift fork 72 push the input coupling 32 to slide and disengage from the drive shaft 5.

[0043] Reference Figure 5 , Figure 6 and Figure 7The outer casing 1 contains a clutch elastic plate 11, which is located on the side of the input coupling 32 near the drive shaft 5. The length direction of the clutch elastic plate 11 is parallel to the length direction of the drive shaft 5. The clutch elastic plate 11 includes a distal plate 111, a proximal plate 112, and an inclined plate 113. One end of the inclined plate 113 is connected to the distal plate 111, and the other end is connected to the proximal plate 112. In its natural state, when the input coupling 32 slides away from the clutch elastic plate 11 and abuts against the clutch elastic plate 11, the end of the proximal plate 112 abuts against the input coupling 32, making it difficult for the input coupling 32 to continue sliding and engaging with the electric drive coupling 522. The input connector 32 includes a locking block 321, a base 322, and a locking plate 323. The base 322 is a cylindrical structure. The locking plate 323 is connected to one end of the base 322, and the locking block 321 is connected to the other end of the base 322. The locking block 321 is used to engage with the electric drive coupling 522, and the locking plate 323 is used to contact the micro switch assembly 6. When the proximal plate 112 abuts against the input connector 32, the proximal plate 112 abuts against the end face of the base 322 where the locking block 321 is located. An eccentric groove 325 is formed on the end face of the base 322. The cross-section of the end of the base 322 where the locking block 321 is installed is elliptical. A clearance groove 324 is formed on the side wall of the base 322. The diameter of the cross-section in the middle of the base 322 is smaller than the diameter of the cross-sections on both sides.

[0044] Reference Figure 3 When the user pulls the clutch handle 71, the electric drive mechanism 3 disengages from the drive shaft 5. At this time, the input coupling 32 slides, and the proximal plate 112 abuts against the end face of the base 322. Even if the spring 33 applies a spring force to the input coupling 32, the input coupling 32 cannot slide and connect to the drive shaft 5. At this time, the spring 43 can push the input coupling 42, so that the input coupling 42 automatically connects to the drive shaft 5, thereby automatically switching the drive shaft 5 to the manual drive state.

[0045] When the manual drive mechanism 4 is connected to the transmission shaft 5 and is suddenly powered externally, the motor 31 drives the input coupling 32 to rotate. The elastic force of the first spring 33 is greater than that of the second spring 43. At this time, the input coupling 32 rotates, and the proximal plate 112 abuts against the eccentric groove 325 on the base 322. As the input coupling 32 rotates, the proximal plate 112 can slide and deform along the side wall of the base 322, so that the proximal plate 112 slides into the relief groove 324. At this time, the input coupling 32 can overcome the elastic force of the second spring 43 under the action of the first spring 33 and engage with the electric drive coupling 522. The input coupling 42 can disengage from the transmission shaft 5 under the push of the clutch shaft 51. When the motor 31 drives the input coupling 32 to rotate, the proximal plate 112 is located in the relief groove 324, so that the clutch elastic plate 11 and the input coupling 32 are disengaged, which can reduce the wear of the clutch elastic plate 11.

[0046] The implementation principle of this application embodiment is as follows: by setting a central shaft 2 and a transmission shaft 5 inside the outer casing 1, the electric drive mechanism 3 and the manual drive mechanism 4 can be respectively connected to the transmission shaft 5 and drive the central shaft 2 to rotate. By setting a clutch shaft 51 between the first input connector 32 and the second input connector 42, the clutch shaft 51 is locked between the first input connector 32 and the second input connector 42. Under normal conditions, the first input connector 32 and the second input connector 42 cannot be connected to the transmission shaft 5 at the same time, thereby reducing the probability of the electric drive mechanism 3 and the manual drive mechanism 4 being connected to the transmission shaft 5 at the same time and improving the safety of use.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A clutch-type manual operating mechanism, characterized in that: The device includes a housing (1), a central shaft (2), an electric drive mechanism (3), a manual drive mechanism (4), and a transmission shaft (5). The central shaft (2) and the transmission shaft (5) are rotatably connected in the housing (1). The electric drive mechanism (3) and the manual drive mechanism (4) are respectively located at both ends of the transmission shaft (5). An input coupling 1 (32) is slidably connected to the electric drive mechanism (3), and an input coupling 2 (42) is slidably connected to the manual drive mechanism (4). The transmission shaft (5) includes a clutch shaft (51) and a worm shaft (52). The clutch shaft (51) passes through and is engaged in the worm shaft (52). A worm wheel (21) is provided on the central shaft (2), and the worm wheel (21) meshes with the worm shaft (52). The spindle (2) is connected to the drive shaft (5) for transmission. The clutch shaft (51) is used to slide in the worm shaft (52) along the length direction of the worm shaft (52). One end of the worm shaft (52) is provided with a hand-drive coupling (521), and the other end is connected to an electric drive coupling (522). Input coupling one (32) is used to slide and engage with the electric drive coupling (522). Input coupling two (42) is used to slide and engage with the hand-drive coupling (521). One end of the clutch shaft (51) abuts against input coupling one (32), and the other end abuts against input coupling two (42). The length of the clutch shaft (51) is greater than the distance between input coupling one (32) and input coupling two (42).

2. The clutch-type manual operating mechanism according to claim 1, characterized in that: The electric drive mechanism (3) includes a motor (31) and a spring (33). The housing of the motor (31) is fixed on the outer shell (1). The output shaft of the motor (31) is coaxially connected with the transmission shaft (5). The input connector (32) is set on the output shaft of the motor (31). The spring (33) is sleeved on the output shaft of the motor (31). One end of the spring (33) is fixed on the output shaft of the motor (31), and the other end abuts against the input connector (32).

3. The clutch-type manual operating mechanism according to claim 2, characterized in that: The manual drive mechanism (4) includes a handwheel (41) and a second spring (43). The handwheel (41) is rotatably connected to the outer shell (1), and the input coupling (42) is slidably connected to the handwheel (41). One end of the second spring (43) abuts against the handwheel (41), and the other end abuts against the input coupling (42).

4. The clutch-type manual operating mechanism according to claim 3, characterized in that: A rotating shaft (73) is rotatably connected to the outer shell (1). The rotating shaft (73) passes through the outer shell (1). One end of the rotating shaft (73) is connected to a shift fork (72), and the other end is connected to a clutch handle (71). The clutch handle (71) is located outside the outer shell (1), and the shift fork (72) is located inside the outer shell (1). The shift fork (72) is used to abut against the input connector (32) and push the input connector (32).

5. A clutch-type manual operating mechanism according to claim 4, characterized in that: The outer shell (1) is provided with a clutch elastic plate (11), which includes a distal plate (111), a proximal plate (112), and an inclined plate (113). One end of the inclined plate (113) is connected to the distal plate (111), and the other end is connected to the proximal plate (112). The distal plate (111) is fixed inside the outer shell (1). The input connector (32) includes a locking block (321), a base (322), and a locking plate (323). The base (322) is a cylindrical structure. The locking block (321) is fixed at one end of the base (322), and the locking plate (323) is fixed at the other end of the base (322). The locking block (321) is used to engage the electric drive coupling (522). An eccentric groove (325) is provided on the end face of the base (322). The near end plate (112) is used to abut against the end face of the base (322) and slide along the eccentric groove (325) to the side wall of the base (322).

6. A clutch-type manual operating mechanism according to claim 5, characterized in that: The substrate (322) has a relief groove (324) on its side wall. When the proximal plate (112) is located in the relief groove (324), the input connector (32) and the clutch elastic plate (11) are disengaged.

7. A clutch-type manual operating mechanism according to claim 2, characterized in that: The housing (1) is provided with a micro switch assembly (6). The micro switch assembly (6) includes a contact switch (61), a slider (62) and a return spring (63). The contact switch (61) is connected in the power supply circuit of the motor (31). The slider (62) is slidably connected in the housing (1). One end of the return spring (63) abuts against the slider (62) and the other end is fixed in the housing (1). In the natural state, the slider (62) is disconnected from the contact switch (61). When the drive shaft (5) is disconnected from the input connector (32), the input connector (32) pushes the slider (62) and makes the slider (62) contact the contact switch (61). The contact switch (61) is used to control the motor (31) to be powered on and off.

8. A clutch-type manual operating mechanism according to claim 7, characterized in that: The slider (62) has an arc groove (622) and a ball (621) is provided in the arc groove (622). The ball (621) is tumbling in the arc groove (622) and is used to abut against the input connector (32).

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