Sliding door driving device

Abstract

The invention discloses a sliding door driving device, which belongs to the technical field of door openers and comprises a shell, a transmission main shaft is arranged on the side surface of the shell in a penetrating manner, a gear is arranged at one end, far away from the shell, of the transmission main shaft, a transmission mechanism for driving the transmission main shaft to rotate is arranged in the shell, and a worm gear I is arranged on the transmission main shaft; the first worm gear is rotationally connected with the transmission main shaft, a connecting piece used for driving the transmission main shaft to rotate is arranged on the first worm gear, a rotating shaft penetrates through the inner bottom face of the shell, a first worm is fixed to the top end of the rotating shaft and meshed with the first worm gear, and the rotating shaft is rotationally connected with the shell. The door has the effect of facilitating personnel to open or close the door body during power failure.

Description

Technical Field

[0001] The invention relates to the technical field of door openers, and in particular to a sliding door driving device. Background Art

[0002] With the improvement of living standards and the fast pace of life, the existing automatic door opening and closing has become a common phenomenon, and the emphasis is on safety, simplicity and energy saving. The door opener is a set of mechanical and electronic devices that control the automatic opening and closing of the door body. It is mainly composed of a drive motor, a transmission spindle, and a clutch. The clutch is set to ensure that it can be opened or closed normally in the event of a power outage or other electrical failure.

[0003] In the existing sliding door drive device, the transmission main shaft is driven to rotate by a motor, and then the transmission main shaft drives the gear to rotate. The gear drives the rack connected to the door body to move, so that the rack drives the door body to move, thereby realizing the opening and closing of the door body. When the power is off, the gear is not driven by the motor, and the door body cannot be opened or closed. It is inconvenient for users to open or close the door body during a power outage. Summary of the invention

[0004] In order to improve the problem that it is inconvenient for workers to open or close the door body when there is a power outage, the present application provides a sliding door drive device.

[0005] The present application provides a sliding door driving device adopting the following technical solution: A sliding door drive device comprises a shell, a transmission main shaft is passed through the side of the shell, and a gear is provided at one end of the transmission main shaft away from the shell, characterized in that a transmission mechanism for driving the transmission main shaft to rotate is provided in the shell, a worm gear is provided on the transmission main shaft, the worm gear is rotatably connected to the transmission main shaft, a connecting piece for driving the transmission main shaft to rotate is provided on the worm gear, a rotating shaft is passed through the inner bottom surface of the shell, a worm screw is fixed to the top end of the rotating shaft, the worm screw is meshed with the worm gear, and the rotating shaft is rotatably connected to the shell.

[0006] By adopting the above technical scheme, when the door body needs to be opened or closed, the transmission mechanism drives the transmission main shaft to rotate, and the transmission main shaft drives the gear to rotate, so that the gear drives the rack on the door body to move, so that the rack drives the door body to move, so that the door body is opened or closed; when there is a power outage, the transmission mechanism is powered off and cannot drive the transmission main shaft to rotate, the staff rotates the rotating shaft, the rotating shaft drives the worm to rotate, the worm drives the worm wheel to rotate, so that the worm wheel drives the connecting piece to rotate, the connecting piece drives the transmission main shaft to rotate, the transmission main shaft drives the gear to rotate, the gear drives the rack on the door body to move, and the rack drives the door body to move, so that when there is a power outage, the staff can open or close the door body.

[0007] Preferably, a transmission shaft is rotatably installed in the shell, and a clutch assembly for driving the transmission main shaft to rotate is provided on the transmission shaft. The transmission mechanism includes a worm gear 2 arranged on the transmission shaft, and a motor is provided in the shell. A worm gear 2 is fixed to the bottom end of the motor output shaft, and the worm gear 2 is meshed with the worm gear 2.

[0008] By adopting the above technical solution, the motor is started, and the output shaft of the motor drives worm gear 2 to rotate, worm gear 2 drives worm gear 2 to rotate, worm gear 2 drives the transmission shaft to rotate, the transmission shaft drives the clutch assembly to rotate, and the clutch assembly drives the transmission main shaft to rotate, so that the transmission main shaft drives the gear to rotate, the gear drives the rack on the door body to move, and the rack drives the door body to move, thereby realizing the closing and opening of the door body.

[0009] Preferably, an installation box is provided on the shell, a micro switch is provided in the installation box, a moving column is rotatably installed in the installation box, a through slot is provided on the side of the installation box away from the shell, an end of the moving column away from the shell passes through the through slot, a controller is provided on the top surface of the motor, the output end of the micro switch is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the control end of the motor.

[0010] By adopting the above technical solution, when the door body moves to close, the door body hits the moving column, causing the moving column to swing and hit the micro switch. The micro switch transmits a signal to the controller, so that the controller controls the motor to close and the door body stops moving.

[0011] Preferably, the clutch assembly includes a circular ring arranged on the transmission shaft, a movable groove is provided on the end face of the transmission shaft, the movable groove penetrates the transmission shaft along the axial direction of the transmission shaft, a movable rod is inserted in the movable groove, a clutch block is fixed to one end of the movable rod close to the gear, a clutch groove is provided on the end face of the circular ring close to the gear, a part of the clutch block is inserted in the clutch groove, and an insertion groove is provided on the end face of the transmission main shaft close to the transmission shaft, and another part of the clutch block is inserted in the insertion groove.

[0012] By adopting the above technical solution, the moving rod is moved, so that the moving rod drives the clutch block to move, so that a part of the clutch block is inserted into the clutch slot, and the other part of the clutch block is inserted into the plug-in slot, so that the clutch block connects the transmission shaft and the transmission main shaft. When the motor is started, the output shaft of the motor drives the second worm to rotate, the second worm drives the second worm wheel to rotate, the second worm wheel drives the transmission shaft to rotate, and the transmission shaft drives the clutch block to rotate, so that the clutch block drives the transmission main shaft to rotate, and the transmission main shaft drives the gear to rotate.

[0013] Preferably, a mounting groove is provided on the end face of the transmission main shaft close to the transmission shaft, the mounting groove is connected to the plug-in groove, a spring 1 is fixed to the end face of the clutch block close to the gear, and one end of the spring 1 away from the clutch block is fixed to the inner side face of the mounting groove away from the transmission shaft.

[0014] By adopting the above technical solution, the clutch block moves toward the direction close to the transmission shaft under the elastic force of spring 1, so that the clutch block is inserted into the clutch slot, thereby reducing the possibility of the clutch block escaping from the clutch slot when the transmission shaft rotates.

[0015] Preferably, the connecting member includes a connecting block fixed on the side of the gear close to the clutch block, and a slot is provided on the side of the connecting block away from the gear. The slot vertically penetrates the connecting block, and a connecting rod is fixed on the clutch block, and the connecting rod can be inserted into the slot.

[0016] By adopting the above technical solution, when there is a power outage and the motor cannot be started to drive the transmission main shaft to rotate, the moving rod is moved, and the moving rod drives the clutch block to move, so that the clutch block disengages from the clutch slot and moves into the plug-in slot. The connecting rod on the clutch block is inserted into the card slot on the connecting block, so that when the rotating shaft is rotated, the rotating shaft drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the connecting block to rotate, the connecting block drives the connecting rod to rotate, the connecting rod drives the clutch block to rotate, so that the clutch block drives the transmission main shaft to rotate, and then the transmission main shaft drives the gear to rotate.

[0017] Preferably, a mounting opening is provided on the side of the shell away from the gear, a cover plate is rotatably installed in the mounting opening, a lock for fixedly connecting with the shell is provided on the cover plate, a driving block for driving the moving rod to move is fixed on the side of the cover plate close to the worm gear 2, and the end faces of the moving rod and the driving block close to each other are in abutment with each other.

[0018] By adopting the above technical solution, when a power outage occurs, the lock is opened and the cover is rotated toward the outside of the shell, the shell drives the drive block to move, and the drive block pushes the moving rod to move toward the direction close to the transmission main shaft during the movement, so that the moving rod drives the clutch block to move, so that the moving block is disengaged from the clutch slot and inserted into the plug-in slot, and the connecting rod on the clutch block is inserted into the card slot on the connecting block, so that when a power outage occurs, the staff can rotate the rotating shaft, the rotating shaft drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the transmission main shaft to rotate.

[0019] Preferably, a fixing ring is sleeved on the rotating shaft, and the fixing ring is slidably connected to the rotating shaft in the vertical direction. A fixing groove is opened on the bottom surface of the shell, and the top end of the fixing ring is inserted into the fixing groove. A mounting ring is fixed on the rotating shaft, and a spring 2 is sleeved on the rotating shaft, and the top end of the spring 2 abuts against the bottom surface of the fixing ring, and the bottom end of the spring 2 abuts against the top surface of the mounting ring.

[0020] By adopting the above technical solution, when the staff manually adjusts the size of the door opening, the fixed ring moves upward under the elastic force of spring 2, so that the top of the fixed ring is inserted into the fixed groove, thereby facilitating the staff to lock the rotating shaft when adjusting the size of the door opening.

[0021] Preferably, two round rods are fixed to the bottom surface of the fixed ring, a through hole is opened on the top surface of the mounting ring, the bottom ends of the two round rods pass through the two through holes respectively, a movable ring is sleeved on the rotating shaft, the bottom ends of the round rods are fixed to the top surface of the movable ring, and a limit piece for limiting the movement of the movable ring is provided on the rotating shaft.

[0022] By adopting the above technical solution, when the door body needs to be opened or closed manually, the staff pulls the movable ring downward, the movable ring drives the round rod to move downward, and the round rod drives the fixed ring to move downward, so that the fixed ring is disengaged from the fixed groove, and then the movable ring is fixed to the rotating shaft through the fixing part, so that it is convenient for the staff to rotate the rotating shaft.

[0023] Preferably, a groove is provided on the outer circumferential surface of the rotating shaft, and the limiting member includes a limiting block slidably arranged in the groove, the bottom surface of the limiting block abuts against the top surface of the movable ring, and a spring three is fixed to the end surface of the limiting block close to the central axis of the rotating shaft, and one end of the spring three away from the limiting block is fixed to the inner wall of the groove.

[0024] By adopting the above technical solution, when it is necessary to manually open or close the door body, the staff pulls the movable ring downward, the movable ring drives the round rod to move downward, and the round rod drives the fixed ring to move downward, so that the fixed ring disengages from the fixed groove, and the limit block moves in the direction away from the central axis of the rotating shaft under the elastic force of spring three, so that the bottom surface of the limit block and the top surface of the movable ring are in contact with each other, thereby reducing the possibility of the fixed ring moving upward under the elastic force of spring two.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: 1. When the door body needs to be opened or closed, the transmission mechanism drives the transmission main shaft to rotate, and the transmission main shaft drives the gear to rotate, so that the gear drives the rack on the door body to move, and the rack drives the door body to move, so that the door body is opened or closed; when there is a power outage, the transmission mechanism is powered off and cannot drive the transmission main shaft to rotate, the staff rotates the shaft, the shaft drives the worm to rotate, the worm drives the worm wheel to rotate, so that the worm wheel drives the connecting piece to rotate, the connecting piece drives the transmission main shaft to rotate, the transmission main shaft drives the gear to rotate, the gear drives the rack on the door body to move, and the rack drives the door body to move, so that when there is a power outage, the staff can open or close the door body; 2. Move the moving rod, so that the moving rod drives the clutch block to move, so that a part of the clutch block is inserted into the clutch slot, and the other part of the clutch block is inserted into the plug-in slot, so that the clutch block connects the transmission shaft and the transmission main shaft. When the motor is started, the output shaft of the motor drives the second worm to rotate, the second worm drives the second worm gear to rotate, the second worm gear drives the transmission shaft to rotate, and the transmission shaft drives the clutch block to rotate, so that the clutch block drives the transmission main shaft to rotate, and the transmission main shaft drives the gear to rotate; 3. When the power fails and the motor cannot be started to drive the transmission main shaft to rotate, the moving rod is moved, and the moving rod drives the clutch block to move, so that the clutch block disengages from the clutch slot and moves into the plug-in slot. The connecting rod on the clutch block is inserted into the card slot on the connecting block, so that when the rotating shaft is rotated, the rotating shaft drives the worm to rotate, the worm drives the worm wheel to rotate, the worm wheel drives the connecting block to rotate, the connecting block drives the connecting rod to rotate, the connecting rod drives the clutch block to rotate, so that the clutch block drives the transmission main shaft to rotate, and then the transmission main shaft drives the gear to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the sliding door drive device according to an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of the structure of the worm gear 1 in the embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of the structure of the clutch block in the embodiment of the present application.

[0029] Figure 4 It is a schematic diagram of the structure of the micro switch in the embodiment of the present application.

[0030] Figure 5 It is a schematic diagram of the structure of the cover plate in the embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure of the rotating shaft in the embodiment of the present application.

[0032] Figure 7 It is a cross-sectional view of the rotating shaft in the embodiment of the present application.

[0033] Figure numerals: 1, housing; 11, transmission main shaft; 12, gear; 2, transmission shaft; 21, moving groove; 22, moving rod; 23, clutch block; 24, ring; 25, clutch groove; 26, plug-in groove; 27, mounting groove; 28, spring 1; 3, motor; 31, worm 2; 32, worm gear 2; 33, controller; 34, micro switch; 35, moving column; 36, through groove; 37, mounting box; 4, Worm gear one; 41. rotating shaft; 42. worm one; 43. connecting block; 44. slot; 45. connecting rod; 46. mounting opening; 47. cover plate; 48. lock; 49. driving block; 5. fixing ring; 51. fixing groove; 52. sliding block; 53. sliding groove; 54. mounting ring; 55. spring two; 6. round rod; 61. through hole; 62. moving ring; 63. groove; 64. limit block; 65. spring three. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 This application is described in further detail.

[0035] The embodiment of the present application discloses a sliding door driving device.

[0036] Reference Figure 1 A sliding door driving device includes a housing 1, a transmission main shaft 11 is passed through the side of the housing 1, the transmission main shaft 11 is rotatably connected to the housing 1, and a gear 12 is fixedly mounted on one end of the transmission main shaft 11 away from the housing 1.

[0037] Reference Figure 1 , Figure 2 and Figure 3 A transmission shaft 2 is rotatably mounted in the housing 1, and the central axis of the transmission shaft 2 is colinear with the central axis of the transmission main shaft 11. A moving groove 21 is provided on the end surface of the transmission shaft 2, and the moving groove 21 penetrates the transmission shaft 2 along the axial direction of the transmission shaft 2. A moving rod 22 is inserted into the moving groove 21, and a clutch block 23 is fixed to the end of the moving rod 22 close to the transmission main shaft 11. A circular ring 24 is sleeved and fixed to the end of the transmission shaft 2 close to the transmission main shaft 11, and a clutch groove 25 is provided on the end surface of the circular ring 24 close to the transmission main shaft 11, and the clutch groove 25 penetrates the circular ring 24 along the radial direction of the circular ring 24, and a part of the clutch block 23 is inserted into the clutch groove 25.

[0038] Reference Figure 2 and Figure 3The end surface of the transmission main shaft 11 close to the transmission shaft 2 is provided with a plug-in slot 26, which penetrates the transmission main shaft 11 in the radial direction of the transmission main shaft 11, and the other part of the clutch block 23 is inserted into the plug-in slot 26. The end surface of the transmission main shaft 11 close to the ring 24 is provided with a mounting slot 27, which is connected to the plug-in slot 26, and a spring 28 is fixed to the inner side surface of the mounting slot 27 away from the ring 24, and one end of the spring 28 close to the ring 24 is fixed to the side of the clutch block 23 away from the moving rod 22.

[0039] Reference Figure 1 , Figure 2 and Figure 3 A motor 3 is fixed in the housing 1, a worm 31 is fixed to the bottom end of the output shaft of the motor 3, a worm wheel 32 is sleeved and fixed on the outer circumference of the transmission shaft 2, and the worm 31 is meshed with the worm wheel 32.

[0040] When the door body needs to be opened or closed, the motor 3 is started, and the output shaft of the motor 3 drives the worm 2 31 to rotate, the worm 2 31 drives the worm wheel 2 32 to rotate, the worm wheel 2 32 drives the transmission shaft 2 to rotate, the transmission shaft 2 drives the ring 24 to rotate, the ring 24 drives the clutch block 23 to rotate, the clutch block 23 drives the transmission main shaft 11 to rotate, the transmission main shaft 11 drives the gear 12 to rotate, so that the gear 12 drives the rack on the door body to move, and the rack drives the door body to move, thereby realizing the opening and closing of the door body.

[0041] Reference Figure 1 , Figure 2 and Figure 4 A controller 33 is fixed on the top surface of the motor 3, a mounting box 37 is fixed on the side of the housing 1 close to the gear 12, a micro switch 34 is fixed in the mounting box 37, the output end of the micro switch 34 is electrically connected to the input end of the controller 33, and the output end of the controller 33 is electrically connected to the control end of the motor 3. A moving column 35 is rotatably mounted in the mounting box 37, a through slot 36 is provided on the side of the mounting box 37 away from the housing 1, one end of the moving column 35 away from the housing 1 passes through the through slot 36, and the moving column 35 can swing in the through slot 36.

[0042] When the door moves to the closed position, the door hits the moving column 35, causing the moving column 35 to swing along the through slot 36 and hit the micro switch 34. The micro switch 34 transmits a signal to the controller 33, and the controller 33 controls the motor 3 to turn off, thereby stopping the door from moving.

[0043] Reference Figure 1 , Figure 2 and Figure 3The outer circumference of the transmission main shaft 11 is sleeved with a worm wheel 4, which is rotatably connected to the transmission main shaft 11. A rotating shaft 41 is penetrated through the inner bottom surface of the housing 1, which is rotatably connected to the housing 1. A worm 42 is fixed to the top of the rotating shaft 41, and the worm 42 is meshed with the worm wheel 4. Two connecting blocks 43 are fixed on both sides of the side of the worm wheel 4 close to the worm wheel 232, and a slot 44 is provided on the end surface of the connecting block 43 away from the worm wheel 4, and the slot 44 vertically penetrates the connecting block 43. Connecting rods 45 are fixed to both ends of the top and bottom surfaces of the clutch block 23, and the connecting rod 45 can be inserted into the slot 44.

[0044] Reference Figure 1 , Figure 3 and Figure 5 A mounting opening 46 is provided on the side of the housing 1 away from the gear 12, and a cover plate 47 is rotatably installed in the mounting opening 46. The cover plate 47 is provided with a lock 48 for fixed connection with the housing 1, and a driving block 49 for driving the moving rod 22 to move is fixed on the side of the cover plate 47 close to the worm gear 23.

[0045] Reference Figure 2 , Figure 3 and Figure 5 When the power is off, the lock 48 is opened, and then the cover plate 47 is rotated in the direction away from the housing 1, so that the cover plate 47 drives the driving block 49 to rotate, and the driving block 49 pushes the moving rod 22, and the moving rod 22 drives the clutch block 23 to move, so that the clutch block 23 is disengaged from the clutch slot 25 and inserted into the plug-in slot 26, and the connecting rod 45 on the clutch block 23 is inserted into the card slot 44, so that when the power is off, the staff can rotate the rotating shaft 41, so that the rotating shaft 41 drives the worm 42 to rotate, the worm 42 drives the worm wheel 4 to rotate, the worm wheel 4 drives the clutch block 23 to rotate, the clutch block 23 drives the transmission main shaft 11 to rotate, and the transmission main shaft 11 drives the gear 12 to rotate, so that the gear 12 drives the door body to move, so as to open or close the door body.

[0046] Reference Figure 2 and Figure 6 The rotating shaft 41 is sleeved with a fixing ring 5, which is square in shape. A sliding block 52 is fixed to the inner circumference of the fixing ring 5. A sliding groove 53 is provided on the outer circumference of the rotating shaft 41. The sliding block 52 is vertically slidably arranged in the sliding groove 53. A fixing groove 51 is provided on the bottom surface of the housing 1. The top of the fixing ring 5 is inserted into the fixing groove 51. A mounting ring 54 is sleeved and fixed to the outer circumference of the rotating shaft 41. A spring 55 is sleeved on the circumferential side of the rotating shaft 41. The top of the spring 55 abuts against the bottom surface of the fixing ring 5, and the bottom of the spring 55 abuts against the top surface of the mounting ring 54.

[0047] Reference Figure 2 , Figure 6 and Figure 7, round rods 6 are fixed on both sides of the bottom surface of the fixed ring 5, two through holes 61 are provided on the top surface of the mounting ring 54, the bottom ends of the two round rods 6 pass through the two through holes 61 respectively, a moving ring 62 is sleeved on the rotating shaft 41, and the bottom ends of the two round rods 6 are fixed to the top surface of the moving ring 62 respectively. A groove 63 is provided on the outer peripheral surface of the rotating shaft 41, and a limit block 64 is slidably provided in the groove 63, and the bottom surface of the limit block 64 can abut against the top surface of the moving ring 62. A spring 3 65 is fixed to the end surface of the limit block 64 close to the central axis of the rotating shaft 41, and the end of the spring 3 65 away from the limit block 64 is fixed to the inner wall of the groove 63.

[0048] The implementation principle of a sliding door driving device in the embodiment of the present application is as follows: when the power is off and the door body needs to be opened or closed, the lock 48 is opened and then the cover plate 47 is rotated. The cover plate 47 drives the driving block 49 to move, so that the driving block 49 pushes the moving rod 22 to move in the direction close to the worm gear 4, so that the moving rod 22 drives the clutch block 23 to move, so that the clutch block 23 is disengaged from the clutch groove 25 and moves into the plug-in groove 26. The connecting rod 45 on the clutch block 23 is inserted into the card groove 44, and then the moving ring 62 is pulled downward, and the moving ring 62 drives the round rod 6 to move downward, and the round rod 6 drives the fixed ring 5 to move downward, so that the fixed ring 5 is disengaged from the fixed groove 51. When the moving ring 62 moves to the bottom of the limit block 64, the limit block 64 moves in the direction away from the central axis of the rotating shaft 41 under the elastic force of the spring three 65, so that the bottom surface of the limit block 64 abuts against the top surface of the moving ring 62, thereby limiting the upward movement of the moving ring 62. Then rotate the rotating shaft 41, the rotating shaft 41 drives the worm 42 to rotate, the worm 42 drives the worm wheel 4 to rotate, the worm wheel 4 drives the connecting block 43 to rotate, the connecting block 43 drives the connecting rod 45 to rotate, the connecting rod 45 drives the clutch block 23 to rotate, the clutch block 23 drives the transmission main shaft 11 to rotate, the transmission main shaft 11 drives the gear 12 to rotate, so that the gear 12 drives the rack on the door body to move, and the rack drives the door body to move, so that when the power is off, the staff can open or close the door body.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sliding door driving device, comprising a housing (1), a transmission main shaft (11) passing through a side surface of the housing (1), a gear (12) being arranged at one end of the transmission main shaft (11) away from the housing (1), characterized in that: A transmission mechanism for driving the transmission main shaft (11) to rotate is arranged in the housing (1); a worm gear (4) is arranged on the transmission main shaft (11); the worm gear (4) is rotationally connected to the transmission main shaft (11); a connecting piece for driving the transmission main shaft (11) to rotate is arranged on the worm gear (4); a rotating shaft (41) is passed through the inner bottom surface of the housing (1); a worm gear (42) is fixed to the top end of the rotating shaft (41); the worm gear (42) is meshed with the worm gear (4); and the rotating shaft (41) is rotationally connected to the housing (1).

2. A sliding door driving device according to claim 1, characterized in that: A transmission shaft (2) is rotatably mounted in the housing (1); a clutch assembly for driving the transmission main shaft (11) to rotate is arranged on the transmission shaft (2); the transmission mechanism comprises a second worm gear (32) arranged on the transmission shaft (2); a motor (3) is arranged in the housing (1); a second worm gear (31) is fixed to the bottom end of the output shaft of the motor (3); the second worm gear (31) is meshed with the second worm gear (32).

3. A sliding door driving device according to claim 2, characterized in that: The shell (1) is provided with an installation box (37), a micro switch (34) is provided in the installation box (37), a moving column (35) is rotatably installed in the installation box (37), a through slot (36) is provided on the side of the installation box (37) away from the shell (1), an end of the moving column (35) away from the shell (1) passes through the through slot (36), a controller (33) is provided on the top surface of the motor (3), an output end of the micro switch (34) is electrically connected to an input end of the controller (33), and an output end of the controller (33) is electrically connected to a control end of the motor (3).

4. A sliding door driving device according to claim 2, characterized in that: The clutch assembly comprises a circular ring (24) arranged on the transmission shaft (2); a movable groove (21) is provided on the end surface of the transmission shaft (2); the movable groove (21) penetrates the transmission shaft (2) along the axial direction of the transmission shaft (2); a movable rod (22) is inserted into the movable groove (21); a clutch block (23) is fixed to one end of the movable rod (22) close to the gear (12); a clutch groove (25) is provided on the end surface of the circular ring (24) close to the gear (12); a part of the clutch block (23) is inserted into the clutch groove (25); and a plug-in groove (26) is provided on the end surface of the transmission main shaft (11) close to the transmission shaft (2); another part of the clutch block (23) is inserted into the plug-in groove (26).

5. A sliding door driving device according to claim 4, characterized in that: The end surface of the transmission main shaft (11) close to the transmission shaft (2) is provided with a mounting groove (27), and the mounting groove (27) is communicated with the plug-in groove (26). The end surface of the clutch block (23) close to the gear (12) is fixed with a spring 1 (28), and one end of the spring 1 (28) away from the clutch block (23) is fixed to the inner side surface of the mounting groove (27) away from the transmission shaft (2).

6. A sliding door driving device according to claim 4, characterized in that: The connecting member comprises a connecting block (43) fixed on a side of the gear (12) close to the clutch block (23); a slot (44) is provided on a side of the connecting block (43) away from the gear (12); the slot (44) vertically penetrates the connecting block (43); a connecting rod (45) is fixed on the clutch block (23); and the connecting rod (45) can be inserted into the slot (44).

7. A sliding door driving device according to claim 6, characterized in that: The housing (1) is provided with an installation opening (46) on a side away from the gear (12), a cover plate (47) is rotatably installed in the installation opening (46), a lock (48) is provided on the cover plate (47) for being fixedly connected to the housing (1), a driving block (49) for driving the moving rod (22) to move is fixed on the side of the cover plate (47) close to the worm gear (32), and the end faces of the moving rod (22) and the driving block (49) close to each other are in abutment with each other.

8. The sliding door driving device according to claim 3, characterized in that: A fixing ring (5) is sleeved on the rotating shaft (41), and the fixing ring (5) is slidably connected to the rotating shaft (41) in the vertical direction. A fixing groove (51) is provided on the bottom surface of the housing (1), and the top end of the fixing ring (5) is inserted into the fixing groove (51). A mounting ring (54) is fixed on the rotating shaft (41). A second spring (55) is sleeved on the rotating shaft (41), and the top end of the second spring (55) abuts against the bottom surface of the fixing ring (5), and the bottom end of the second spring (55) abuts against the top surface of the mounting ring (54).

9. The sliding door driving device according to claim 8, characterized in that: Two round rods (6) are fixed to the bottom surface of the fixed ring (5); a through hole (61) is provided on the top surface of the mounting ring (54); the bottom ends of the two round rods (6) pass through the two through holes (61) respectively; a movable ring (62) is sleeved on the rotating shaft (41); the bottom ends of the round rods (6) are fixed to the top surface of the movable ring (62); and a limiting member for limiting the movement of the movable ring (62) is provided on the rotating shaft (41).

10. The sliding door driving device according to claim 9, characterized in that: A groove (63) is provided on the outer circumferential surface of the rotating shaft (41); the limiting member comprises a limiting block (64) slidably arranged in the groove (63); the bottom surface of the limiting block (64) abuts against the top surface of the moving ring (62); a spring three (65) is fixed to the end surface of the limiting block (64) close to the central axis of the rotating shaft (41); and one end of the spring three (65) away from the limiting block (64) is fixed to the inner wall of the groove (63).

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