Manual-automatic integrated roller shutter driver

Abstract

The manual-automatic integrated roller shutter driver comprises a motor, a speed reducing mechanism, a driving shaft and a clutch mechanism, the clutch mechanism comprises a spline sleeve, the spline sleeve is sleeved with a driving gear ring and a driven gear ring, and the driving gear ring can rotate in the circumferential direction relative to the spline sleeve; the driven gear ring and the spline sleeve rotate synchronously, and the driven gear ring can axially slide relative to the spline sleeve under the action of the shifting fork. When the shifting fork shifts the driven gear ring to a first position, the driving gear ring is meshed with the driven gear ring, and the roller shutter is in a motor-driven automatic mode; when the shifting fork shifts the driven gear ring to a second position, the driving gear ring and the driven gear ring are meshed and separated from each other, the driving shaft can be manually driven, the roller shutter is in a manual mode of manual driving, the speed reducing mechanism and the driving shaft are directly connected in a sleeved mode through the driver, unnecessary intermediate links are reduced, a high-stability clutch device is provided, and the driving shaft can be driven by the roller shutter. The meshing mode of the spline sleeve and the driven gear ring ensures the stability and reliability of power transmission.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric retractable roller shutters, and in particular relates to an electric roller shutter drive device for pickup trucks or trucks. The device has a manual and automatic drive integrated into one and switchable as needed. Background Art

[0002] With the development of vehicles, pickup trucks or vans with box-shaped cargo areas with top openings are becoming increasingly popular. The loading area of a pickup truck is usually equipped with an electric roller shutter, which can open or close the loading area according to instructions. When the vehicle's power system fails, such as when the battery is dead, the motor fails, or the circuit is short-circuited, causing the electric roller shutter to fail to work properly, the manual function can be used as an emergency measure to allow the user to open or close the roller shutter normally, avoiding the loading and unloading or protection of the cargo being affected by the inability to operate the roller shutter. In addition, if the remote control of the electric roller shutter is lost, damaged, or the signal is interfered with, and automatic control cannot be achieved through remote control, manual operation can ensure that the user can still operate the roller shutter, avoiding the dilemma of being unable to use the roller shutter. Therefore, electric roller shutters usually have a manual mode structure.

[0003] The clutch switching mechanism for manual and automatic modes in existing electric roller blinds is complex, typically located outside the roller blind slot. This results in poor transmission precision when the clutch is disengaged and restored, or the use of wide tolerances reduces engagement accuracy to mitigate errors. Therefore, providing a convenient, stable, and integrated manual and automatic actuator for retracting and extending a cover is a pressing technical challenge. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a manual-automatic roller shutter drive, comprising: a motor having a motor output shaft;

[0005] A reduction mechanism comprising a gear reduction system and / or a worm gear reduction system;

[0006] A drive shaft, one end of which is fixed with a roller shutter assembly and is capable of driving the roller shutter assembly to open or close;

[0007] The clutch mechanism includes a spline sleeve, which is provided with a driving gear ring and a driven gear ring. The driving gear ring is in transmission connection with the reduction mechanism and can rotate circumferentially relative to the spline sleeve. The driven gear ring is provided with internal teeth that mesh with the spline sleeve. The driven gear ring is correspondingly arranged with the driving gear ring and can slide axially relative to the spline sleeve under the action of the shift fork.

[0008] Among them, the spline sleeve is sleeved on the drive shaft, and the spline sleeve is connected to the drive shaft through a coupling. The power of the motor output shaft reaches the drive shaft through the reduction mechanism, the clutch mechanism, and the coupling. When the shift fork shifts the driven gear ring to the first position, the active gear ring and the driven gear ring are engaged, and the roller shutter is in the automatic mode driven by the motor; when the shift fork shifts the driven gear ring to the second position, the active gear ring and the driven gear ring are engaged and disengaged from each other, the drive shaft can be manually driven, and the roller shutter is in the manual mode of manual drive.

[0009] Traditional transmission structures often require multiple intermediate components to achieve power transmission, which not only increases the number of parts, but also complicates the assembly process and increases the probability of failure. In this technical solution, however, the reduction mechanism is directly mounted on the drive shaft, significantly reducing the complexity of the transmission structure. This driver directly integrates the reduction mechanism with the drive shaft, eliminating unnecessary intermediate links and making power transmission more direct and efficient. The clutch mechanism utilizes a splined sleeve, a driving ring gear, a driven ring gear, and a shift fork, providing a highly stable clutch device. The meshing of the splined sleeve and driven ring gear ensures smooth and reliable power transmission. The driving ring gear can rotate circumferentially relative to the splined sleeve, while the driven ring gear can slide axially relative to the splined sleeve under the action of the shift fork. This structural design makes clutch operation more precise and reliable. When switching between automatic and manual modes, the shift fork accurately shifts the driven ring gear to the corresponding position, engaging and disengaging the driving and driven ring gears and ensuring smooth switching between the two modes. The stability of this clutch device is also reflected in its ability to withstand high torque and impact forces, ensuring normal operation under various complex operating conditions. This not only reduces production costs, but also improves the reliability and stability of the entire drive, reducing repair costs and downtime caused by transmission component failures.

[0010] Preferably, the spline sleeve includes an idle position and a sliding position, the active gear ring is sleeved on the idle position and can rotate in the circumferential direction of the spline sleeve; the sliding position is provided with a spline groove, the driven gear ring is sleeved on the sliding position and the internal teeth of the driven gear ring are engaged with the spline groove of the sliding position, and the driven gear ring rotates synchronously with the spline sleeve.

[0011] When it is necessary to switch modes, the shift fork pushes the driven gear ring to axially slide relative to the spline sleeve. Due to the meshing relationship between the spline groove at the sliding position and the internal teeth of the driven gear ring, the driven gear ring always maintains synchronous rotation with the spline sleeve during the sliding process, without rotational offset or jamming caused by the sliding, ensuring that the driven gear ring can accurately mesh with or disengage from the driving gear ring. In the automatic mode, the driven gear ring meshes with the driving gear ring, and the power is stably transmitted through the spline sleeve; when switching to the manual mode, the driven gear ring quickly and accurately disengages from the driving gear ring, enabling the drive shaft to get rid of the motor power constraint and realizing manual operation. This precise mode switching mechanism not only improves the operation convenience but also reduces the risk of mechanical failures caused by inaccurate switching, enhancing the practicality and applicability of the driver.

[0012] Preferably, the coupling is sleeved on the drive shaft, one end of the coupling is fixed to the transmission position at the end of the spline sleeve, and the other end of the coupling is fixed to the drive shaft.

[0013] The coupling reliably connects the spline sleeve and the drive shaft, enhancing the reliability of the entire transmission system. When a component of the driver fails, due to the connection characteristics of the coupling, it is convenient to disassemble and replace the faulty component. The maintenance personnel do not need to conduct large-scale disassembly of the entire transmission system. Only by disassembling the fixing components at both ends of the coupling can the spline sleeve and the drive shaft be separated, quickly locating and replacing the damaged component. This design reduces the maintenance difficulty and cost, improving the maintainability of the driver. At the same time, the reliable coupling connection ensures the stability of power transmission, reducing the risk of system failures caused by loose or failed connections, and further enhancing the overall reliability and safety of the pickup truck tailgate roll-up manual-automatic integrated driver.

[0014] Preferably, it further includes an output worm gear, the output worm gear is sleeved on the spline sleeve and fixedly connected and synchronously rotated with the driving gear ring, and the power of the motor is transmitted to the clutch mechanism through the output worm gear.

[0015] This technical solution effectively optimizes the overall structural layout of the driver. The output worm gear is directly sleeved on the spline sleeve and connected to the driving gear ring, reducing additional transmission components and connection structures, making the power transmission path more concise and compact. This compact design not only saves the installation space of the driver, adapts to the limited internal space environment of the pickup truck tailgate, but also reduces the assembly difficulty and cost. During the production and assembly process, there is no need for complex calibration and adjustment procedures, and the output worm gear, spline sleeve and driving gear ring can be quickly assembled together, improving the production efficiency.

[0016] Preferably, an annular groove is provided on the outer peripheral surface of the driven gear ring, and the fork is provided with a fork push pin which is embedded in the annular groove. When the driven gear ring rotates synchronously with the spline sleeve, the fork push pin does not interfere with the annular groove; when the fork pushes the driven gear ring to move, the fork push pin drives the driven gear ring to move through the side wall of the annular groove.

[0017] When the driven gear ring rotates synchronously with the spline sleeve, the fork push pin does not interfere with the annular groove. This characteristic ensures that during the normal power transmission process, no additional resistance or interference is generated due to the presence of the fork. Driven by the driven gear ring, the spline sleeve rotates freely and smoothly, enabling the power output by the motor to be efficiently transmitted to the drive shaft through the clutch mechanism, and then driving the rolling curtain assembly to retract and extend. When it is necessary to switch between the automatic mode and the manual mode, the fork push pin drives the driven gear ring to move through the side wall of the annular groove, achieving precise clutch control. The design of the annular groove provides a clear driving path and acting point for the fork push pin, enabling the fork to accurately move the driven gear ring to the position where it meshes with or disengages from the driving gear ring.

[0018] Preferably, a fork rotating shaft is provided in the middle of the fork and the fork can rotate relative to the fork rotating shaft. The fork part of the fork has two driving arms, and a fork push pin is provided on each driving arm. The two fork push pins are distributed on both sides of the driven gear ring and are both embedded in the annular groove.

[0019] The design that the fork can rotate around the fork rotating shaft enables the fork to move precisely along a predetermined trajectory during operation. When it is necessary to switch between the automatic mode and the manual mode, the operator pulls a rope or the like connected to the fork, and the fork rotates around the rotating shaft. The fork push pins on the two driving arms can act on the annular grooves on both sides of the driven gear ring simultaneously and evenly. This bilateral synchronous driving method ensures the smoothness and linearity of the axial movement of the driven gear ring, avoiding the situation that the driven gear ring tilts or jams due to uneven force. Thus, the driven gear ring can be accurately moved to the position where it meshes with or disengages from the driving gear ring, realizing a reliable and stable mode switch, and greatly improving the accuracy and reliability of the operation of the driver.

[0020] Preferably, a rope is provided on the bottom side of the rod part of the fork, and under the traction of the rope, the fork can rotate relative to the fork rotating shaft.

[0021] The setting of the rope provides a simple and direct manual operation method for users. When it is necessary to switch the working mode of the roller shutter drive, the user only needs to pull the rope, which can easily drive the fork to rotate around the fork rotating shaft, and then push the driven gear ring to engage or disengage from the driving gear ring, completing the switching between the automatic mode and the manual mode. Compared with complex mechanical operating mechanisms, the rope traction method has a low operation threshold, does not require additional tools or complex operation skills, and the user can operate by stretching the rope, greatly improving the operation convenience and flexibility. In addition, the length and installation position of the rope can be adjusted according to actual needs to adapt to different vehicle models and installation environments, meeting diverse usage scenarios.

[0022] A roller shutter structure is also proposed, which includes a roller shutter groove, a roller shutter assembly and the aforementioned manual-automatic integrated roller shutter drive. At the left and right ends inside the roller shutter groove, a first mounting bracket and a second mounting bracket are provided. Both ends of the drive shaft are respectively supported by the first mounting bracket and the second mounting bracket. The manual-automatic integrated roller shutter drive is located between the first mounting bracket and the second mounting bracket and sleeved on the drive shaft.

[0023] The drive shaft is installed as a complete shaft on the first mounting bracket and the second mounting bracket provided at the left and right ends inside the roller shutter groove. The two mounting brackets provide stable support points for the drive shaft, forming a stable two-point support structure, effectively dispersing the load borne by the drive shaft during operation, and preventing the drive shaft from bending or deforming due to uneven stress. When the manual-automatic integrated roller shutter drive is sleeved on the drive shaft and power is transmitted, the stable support structure ensures that the drive shaft can maintain precise coaxiality, enabling the roller shutter assembly to remain stable during the retracting and extending process, reducing shaking and jamming phenomena. This enhances the integrity of the entire roller shutter structure. The first mounting bracket and the second mounting bracket not only play the role of supporting the drive shaft, but also form a stable frame structure with the roller shutter groove, providing reliable protection for the roller shutter assembly and the drive.

[0024] Other beneficial effects of the present invention will be described one by one in the specific embodiments later. Brief Description of the Drawings

[0025] Figure 1 It is the first three-dimensional schematic diagram of the manual-automatic integrated roller shutter drive of the present invention;

[0026] Figure 2 It is the second three-dimensional schematic diagram of the manual-automatic integrated roller shutter drive of the present invention;

[0027] Figure 3 It is the partial exploded view of the driving, decelerating and clutch structures of the manual-automatic integrated roller shutter drive of the present invention;

[0028] Figure 4 It is the structural schematic diagram of the clutch structure of the manual-automatic integrated roller shutter drive of the present invention;

[0029] Figure 5 The first exploded structural schematic diagram of the clutch structure of the manual-automatic integrated rolling curtain drive of the present invention;

[0030] Figure 6 The second exploded structural schematic diagram of the clutch structure of the manual-automatic integrated rolling curtain drive of the present invention;

[0031] Figure 7 The three-dimensional cross-sectional view of the clutch structure of the manual-automatic integrated rolling curtain drive of the present invention;

[0032] Figure 8 The comparison diagram of two states of the clutch structure of the manual-automatic integrated rolling curtain drive of the present invention.

[0033] In the figure: 1 motor; 2 motor mounting housing; 3 first housing; 4 coupling; 4a first spline sleeve, 4b second spline sleeve, 4c third spline sleeve; 5 second housing; 6 fork housing; 7 first mounting bracket; 8 second mounting bracket; 9 torsion spring; 10 input worm gear; 11 first bearing; 12 worm; 13 second bearing; 14 third bearing; 15 output worm gear; 16 driving gear ring; 17 driven gear ring; 18 spline sleeve; a support position; b idle position; c sliding position; d transmission position; 19 fourth bearing; 20 seal sleeve; 21 fork rotating shaft; 21a rotating shaft hole; 22 fork push pin; 22a pin hole; 22b pin head; 23 rope hole; 23a rope passing slot; 24 positioning sleeve; 25 return spring; 26 positioning flange. Detailed implementation manners

[0034] Regarding the foregoing and other technical contents, features and effects of the present invention, the following will be described in detail with reference to the attached Figures 1 to 8 embodiments.

[0035] Electric rolling curtain product for pickup truck

[0036] The manual-automatic integrated rolling curtain drive in this embodiment is adapted to a traditional electric rolling curtain product for pickup truck. The electric rolling curtain for pickup truck (not shown in the figure) mainly consists of components such as a rolling curtain groove, a rolling tube, a rolling curtain cover, a motor, a driving shaft, a mounting beam, a guide rail, a fixing block assembly and a drainage system. Among them, the rolling curtain groove is arranged at the front end of the top of the rear compartment of the pickup truck for accommodating the rolling tube, and the rolling tube can rotate in the rolling curtain groove, and a rolling curtain cover is connected to its outside.

[0037] In this embodiment, the manual-automatic integrated rolling curtain drive is installed on one side of the rolling curtain slot to provide power for the movement of the rolling curtain cover. The power of the motor 1 reaches the drive shaft 27 after passing through the speed reduction mechanism and the clutch mechanism, and the drive shaft 27 drives the rolling curtain to achieve power transmission. Usually, a torsion spring 9 is sleeved on the drive shaft. The torsion spring provides auxiliary force during the process of rolling up and lowering the rolling curtain. When the rolling curtain is lowered, the elastic potential energy stored in the torsion spring is converted into kinetic energy to help the drive shaft rotate, enabling the rolling curtain to descend more smoothly and quickly; when the rolling curtain is rolled up, the torsion spring can also play a certain buffering role to prevent the rolling curtain from generating excessive impact force due to excessive gravity or motor driving force, protecting the rolling curtain and related components.

[0038] Installation of the manual-automatic integrated rolling curtain drive

[0039] Figures 1 - 7 As shown in the figure, a manual-automatic integrated rolling curtain drive is provided for driving the opening and closing of the rolling curtain cover of a pickup truck. The manual-automatic integrated rolling curtain drive includes a first housing 3 and a second housing 5 and the installation space formed by the two. The speed reduction mechanism and the clutch mechanism are both installed in this installation space. The second housing 5 is installed with a fork housing 6, and the fork assembly is installed in the fork housing 6. And a sealing sleeve 20 is used for sealing at the port to prevent water and dust from entering the installation space and also prevent the lubricating oil from flowing out of the drive.

[0040] As the core component, the manual-automatic integrated rolling curtain drive includes a motor 1, a speed reduction mechanism, a drive shaft 27 and a clutch mechanism. The motor 1 provides a power source for the entire system, and its motor output shaft is connected to the speed reduction mechanism through a coupling element.

[0041] Speed reduction mechanism

[0042] The speed reduction mechanism adopts a gear reduction system or a worm and worm gear reduction system, which is prior art and will not be elaborated too much. Among them, the gear reduction system can be composed of multiple levels of meshing gears, and the worm and worm gears in the worm and worm gear reduction system can be set in multiple groups and arranged at intervals. When the motor 1 starts, the high-speed rotating power of the motor output shaft is successively reduced in speed and increased in torque through the gear reduction system or the worm and worm gear reduction system of the speed reduction mechanism, adjusting the torque and speed to provide a stable low-speed and high-torque power output for subsequent transmission.

[0043] As Figure 3 shown, in this embodiment, the speed reduction mechanism includes an input worm wheel 10, a worm 12, and an output worm wheel 15 sleeved on a spline sleeve 18. The two ends of the input worm wheel 10 are supported by the first bearings 11, and the two ends of the worm 12 are supported by the second bearings 13. The output shaft of the motor 1 is coaxially installed with the input worm wheel 10, so that the axis of the motor 1 is parallel to the axis of the drive shaft 27, and the installation of the motor can make full use of the horizontal space of the rolling curtain slot, greatly reducing the size of the entire drive.

[0044] FromFigure 1 and Figure 2 As can be seen from Figure 2 , both ends of the drive shaft 27 are respectively mounted on the first mounting bracket 7 and the second mounting bracket 8 at the left and right ends in the rolling curtain groove through bearings. The first mounting bracket 7 and the second mounting bracket 8 are fixed to the inner wall of the rolling curtain groove in a detachable manner, providing a stable support for the drive shaft 27 to ensure its stability during rotation.

[0045] The drive shaft 27 is a cylindrical metal shaft body. In this embodiment, for the convenience of transmission installation, its cross-section is set as a hexagon, as Figure 5 shown. The inner hole of the third spline sleeve 4c fixedly connected to the drive shaft 27 is also a hexagon. One end of the rolling curtain assembly can be fixed to the drive shaft 27. When the drive shaft 27 rotates, it can directly drive the rolling curtain assembly to perform the winding or unfolding action.

[0046] Clutch mechanism

[0047] The clutch mechanism is the key structure to realize the function of one - hand operation and one - body operation, mainly composed of components such as a spline sleeve 18, a driving gear ring 16, a driven gear ring 17, an output worm wheel 15, and a fork. The spline sleeve 18 is a hollow cylindrical structure. Its outer wall is axially divided into a support position a, an idle running position b, a sliding position c, and a transmission position d. After the support position a is inserted into the positioning flange 26, it is supported and positioned by the third bearing 14. The driving gear ring 16 is sleeved on the idle running position b, and there is no transmission relationship between them. The driving gear ring 16 can rotate flexibly in the circumferential direction relative to the spline sleeve 18 under the drive of the speed reduction transmission, and only rotates in the circumferential direction without sliding axially relative to the spline sleeve 18. The outer surface of the sliding position c is provided with regularly distributed spline grooves, and the inner ring of the driven gear ring 17 is provided with internal teeth matching the spline grooves. The driven gear ring 17 is sleeved on the sliding position c, and the synchronous rotation of the driven gear ring 17 and the spline sleeve 18 is realized through the engagement of the internal teeth and the spline grooves.

[0048] At the same time, the spline sleeve 18 is sleeved on the drive shaft 27. The transmission position d at one end of it is fixedly connected to the drive shaft 27 through the coupling 4. In this embodiment, the first spline sleeve 4a is used to form the fixation between the transmission position d of the spline sleeve 18 and the inner wall of the coupling 4, and the combined structure of the second spline sleeve 4b and the third spline sleeve 4c is used to form the fixation between the coupling 4 and the drive shaft 27. Among them, the second spline sleeve 4b provides a surface adapted to the inner wall of the coupling 4, and the third spline sleeve 4c provides an inner hole adapted to the hexagonal cross - section of the drive shaft 27. Other methods can also be adopted for the coupling 4, such as radial fastening with screws and threaded socketing, etc., which can also achieve the same invention purpose. It only needs to enable the power of the motor output shaft to be transmitted to the drive shaft 27 through the speed reduction mechanism, the clutch mechanism, and the coupling 4 in sequence.

[0049] The output worm gear 15 is sleeved on the spline sleeve 18 and fixed to the driving tooth ring 16 through a sleeve connection to ensure synchronous rotation of the two. The worm 12 of the reduction mechanism meshes with the output worm gear 15, thereby transmitting the power of the reduction mechanism to the driving tooth ring 16. An annular groove is provided on the outer periphery of the driven tooth ring 17. The fork part of the fork has two driving arms, and a fork push pin 22 is provided at the end of each driving arm. The two fork push pins 22 are respectively embedded in the annular grooves on both sides of the driven tooth ring 17. A fork rotating shaft 21 is provided on the rod part of the fork. The fork is installed on the side wall of the rolling curtain groove through the fork rotating shaft 21 and can rotate relative to the fork rotating shaft 21. A rope is connected to the bottom side of its rod part. When it is necessary to switch the operation mode, the rope is pulled, the fork rotates around the fork rotating shaft 21, and the fork push pin 22 pushes the driven tooth ring 17 to axially slide relative to the spline sleeve 18 through the annular groove.

[0050] It can be seen from Figure 7 this embodiment that the driving tooth ring 16 is sleeved on the end of the output worm gear 15 and fixed to form an integral transmission tooth ring. One end of this transmission tooth ring is limited by the positioning flange 26, and the other end is limited by the step of the spline sleeve 18. Therefore, the transmission tooth ring can only rotate circumferentially relative to the spline sleeve 18 in the idling position b; the driven tooth ring 17 can slide between the first position and the second position between the driving tooth ring 16 and the fourth bearing 19. On the one hand, it moves reliably under the guidance of the spline sleeve 18, and on the other hand, it is limited by the front and rear structures and will not slide beyond the stroke. Therefore, the clutch action of the driven tooth ring 17 is safe and reliable, reducing the risk of failure.

[0051] Fork assembly

[0052] It can be seen from Figure 6 and Figure 7 the structure that the fork is integrally in a "Y" shape and is composed of a rod part, a rotating shaft connecting part and a fork part. The rod part is a slender rectangular metal strip for receiving an external operating force. An annular ear tie hole 23 is provided on its bottom side, and the rope is connected to the rod part through this ear to form a pulling operation force point. A positioning sleeve 24 is provided on one side of the rod part facing the direction of rope pulling. A return spring 25 is provided in the positioning sleeve 24. After the rope releases the pulling force, the rod part will return to rotation under the action of the return spring 25.

[0053] A shift fork shaft 21 is provided near the middle above the rod or below the fork drive arm. The shift fork shaft 21 is provided on the fork housing 6 so that the shift fork can rotate around the shift fork shaft 21. The fork is opened in a "V" shape, and two drive arms extend symmetrically from both sides of the shaft connection. The ends of the drive arms are provided with shift fork push pins 22. The diameter of the pin head 22b of the shift fork push pin 22 is slightly smaller than the width of the annular groove on the outer periphery of the driven gear ring 17, ensuring that it can be embedded in the groove to achieve effective drive without affecting the rotation and sliding of the driven gear ring 17 due to excessive size. Preferably, a reinforcing rib is provided at the connection between the fork and the rod of the shift fork to enhance the overall structural strength of the shift fork and prevent deformation or damage during frequent operation. The rod is provided with a rope slit 23a, and the positioning sleeve 24 is also provided with a rope slit, so that the rope drawn out from the rope hole 23 can extend outward through the rope slit.

[0054] The shift fork's motion is based on the principle of leverage. When the user pulls a rope attached to the underside of the rod, the tension generated by the rope acts on the rod, causing it to rotate about the shift fork shaft 21. Because the shift fork shaft 21 is located between the rod and the fork, the rod's rotation is transmitted to the fork through leverage, causing the fork's two drive arms to swing synchronously. During this swinging process, the shift fork push pin 22 at the end of the drive arm moves along the annular groove on the outer periphery of the driven ring gear 17, pushing the driven ring gear 17 to slide axially relative to the splined sleeve 18. When it is necessary to switch from automatic mode to manual mode, the rope is pulled to rotate the shift fork, and the shift fork push pin 22 pushes the driven gear ring 17 to slide away from the driving gear ring 16 until the driving gear ring 16 and the driven gear ring 17 are disengaged from each other, cutting off the connection between the motor power and the drive shaft 27, and realizing the switching of the manual mode; conversely, under the action of the return spring 25, the shift fork push pin 22 pushes the driven gear ring 17 to slide toward the driving gear ring 16 and biased to stay in this position, so that the driving gear ring 16 and the driven gear ring 17 are normally engaged, and the drive shaft 27 is driven by the motor power.

[0055] See also Figure 7 8. When the shift fork moves the driven gear ring 17 to the first position, the driven gear ring 17 and the active gear ring 16 engage with each other. At this time, the power output by the motor 1 is transmitted to the drive shaft 27 through the reduction mechanism, the active gear ring 16, the driven gear ring 17, the spline sleeve 18, and the coupling 4 in sequence. The drive shaft 27 drives the roller blind assembly to rotate, realizing the automatic retraction and extension of the roller blind, that is, the motor-driven automatic mode. This mode is suitable for scenarios where users operate from a distance or quickly open and close the trunk. When the shift fork moves the driven gear ring 17 to the second position, the active gear ring 16 and the driven gear ring 17 disengage from each other. At this time, the power transmission between the drive shaft 27 and the motor is interrupted. The user can directly manually rotate the drive shaft 27 to drive the roller blind assembly to achieve the manual mode of manual drive. This mode comes into play when the motor fails or the user wants to perform fine operations, thereby improving the reliability and practicality of the system.

[0056] Description of the usage state

[0057] The working principle of the roll-up manual-automatic integrated drive for the pickup truck tailgate is based on the coordinated operation of various components. The switching between the automatic mode and the manual mode is achieved through a fork, thereby forming different transmission paths to meet diverse usage requirements.

[0058] In the automatic mode, the user issues roll-up and retraction commands through a remote control or a control switch, and the motor 1 starts to operate. The output shaft of the motor outputs high-speed rotational power, which is first transmitted to the reduction mechanism. In the gear reduction system of the reduction mechanism, multiple gears or multiple worm gears are meshed with each other to gradually reduce the high-speed low-torque power of the motor and increase the torque, outputting stable low-speed high-torque power. The power output by the reduction mechanism is transmitted to the output worm gear 15. Since the output worm gear 15 is fixedly connected to and rotates synchronously with the driving gear ring 16, the driving gear ring 16 also rotates accordingly. At this time, the driven gear ring 17 is in the first position, enabling the driving gear ring 16 and the driven gear ring 17 to mesh with each other. The rotation of the driving gear ring 16 drives the driven gear ring 17 to rotate synchronously. The driven gear ring 17 meshes with the spline groove at the sliding position c of the spline sleeve 18 through internal teeth, achieving synchronous rotation with the spline sleeve 18. The spline sleeve 18 is then transmission-connected to the drive shaft 27 through a coupling 4, transmitting the power to the drive shaft 27. Driven by the drive shaft 27, the roll-up component starts to rotate, realizing the automatic roll-up and retraction of the roll-up curtain, and completing the complete transmission path from the input of motor power to the output of the roll-up curtain action. It should be noted that when the driven gear ring 17 rotates synchronously with the spline sleeve 18, due to the existence of the annular groove, although the fork push pin 22 is embedded in the annular groove, it does not interfere with the driven gear ring 17.

[0059] When it is necessary to switch to the manual mode, the user pulls the rope connected to the bottom side of the fork rod. The pulling force of the rope causes the fork to rotate around the fork rotating shaft 21. The fork push pins 22 at the ends of the two driving arms of the fork act on the side walls of the annular groove on the outer periphery of the driven gear ring 17, pushing the driven gear ring 17 to slide relative to the spline sleeve 18 in a direction away from the driving gear ring 16 until the driving gear ring 16 and the driven gear ring 17 are disengaged from each other. At this time, the connection between the motor power and the drive shaft 27 is cut off, and the user can directly manually rotate the drive shaft 27. Since both ends of the drive shaft 27 are installed on the first mounting bracket 7 and the second mounting bracket 8 in the roll-up curtain groove through bearings and rotate smoothly, the manual force applied by the user directly acts on the drive shaft 27, driving the roll-up curtain component fixed thereon to move, realizing the manual drive of the roll-up curtain for roll-up and retraction. In the manual mode, the drive is freed from the constraint of the motor. In special situations such as motor failure and power outage, it can still ensure the normal use of the roll-up curtain by the user, reflecting the flexibility and reliability of the design of this drive.

[0060] The rolling curtain structure of the pickup truck tailgate in this embodiment realizes the free switching between electric and manual operation modes through the design of the manual and electric integrated rolling curtain drive, meeting the diverse usage needs of users. The composite design of the deceleration mechanism effectively improves the power transmission efficiency and torque output stability; the precise structural cooperation and transmission relationship of the components in the clutch mechanism ensure the reliability and convenience of mode switching. In addition, the stable support of the rolling curtain groove and the mounting bracket for the drive shaft, as well as the compensation of the coupling for shaft offset, all improve the operation stability and service life of the entire rolling curtain system, providing an efficient and reliable protection and opening / closing solution for the pickup truck tailgate.

[0061] The above description is only for the purpose of illustrating the present invention. It should be understood that the present invention is not limited to the above embodiments, and various equivalent forms that conform to the idea of the present invention are within the protection scope of the present invention.

Claims

1. Manual-automatic integrated rolling shutter drive, comprising: A motor (1) having a motor output shaft; A reduction mechanism comprising a gear reduction system and / or a worm gear reduction system; A drive shaft (27) is provided, one end of which is fixed with a roller shutter assembly and is capable of driving the roller shutter assembly to open or close the operation movement, and is characterized in that: The clutch mechanism also includes a spline sleeve (18), the spline sleeve outer shell is provided with a driving gear ring (16) and a driven gear ring (17), the driving gear ring is connected to the reduction mechanism in a transmission manner and can rotate in the circumferential direction relative to the spline sleeve; the driven gear ring is provided with internal teeth that mesh with the spline sleeve and the two can rotate synchronously, the driven gear ring is correspondingly arranged with the driving gear ring and can slide along the axial direction of the spline sleeve under the action of the shift fork; The spline sleeve is sleeved on the drive shaft (27), and the spline sleeve is connected to the drive shaft (27) through a coupling (4). The power of the motor output shaft reaches the drive shaft through a reduction mechanism, a clutch mechanism, and a coupling. When the shift fork shifts the driven gear ring to the first position, the active gear ring (16) and the driven gear ring (17) are engaged, and the roller shutter is in an automatic mode driven by the motor; when the shift fork shifts the driven gear ring to the second position, the active gear ring and the driven gear ring are disengaged from each other, the drive shaft can be manually driven, and the roller shutter is in a manual mode driven by the manual drive.

2. The manual-automatic integrated rolling shutter driver according to claim 1, characterized in that: The spline sleeve (18) comprises an idle position (b) and a sliding position (c), wherein the driving gear ring is sleeved on the idle position and can idle in the circumferential direction of the spline sleeve; the sliding position is provided with a spline groove, and the driven gear ring is sleeved on the sliding position and the inner teeth of the driven gear ring are engaged with the spline groove of the sliding position.

3. The manual-automatic integrated roller blind drive according to claim 1, wherein: The coupling is sleeved on the driving shaft, one end of the coupling is fixed to the transmission position (d) at the end of the spline sleeve, and the other end of the coupling is fixed to the driving shaft (27).

4. The manual-automatic integrated roller shutter drive according to claim 1, characterized in that: It also includes an output worm gear (15), which is sleeved on a spline sleeve (18) and fixedly connected to a driving gear ring (16) and rotates synchronously. The power of the motor is transmitted to the clutch mechanism through the output worm gear.

5. The manual-automatic integrated roller blind drive according to claim 1, wherein: The outer peripheral surface of the driven gear ring (17) is provided with an annular groove, and the shift fork is provided with a shift fork push pin (22), which is embedded in the annular groove. When the driven gear ring and the spline sleeve rotate synchronously, the shift fork push pin does not interfere with the annular groove; when the shift fork pushes the driven gear ring to move, the shift fork push pin drives the driven gear ring to move through the side wall of the annular groove.

6. The manual-automatic integrated rolling shutter driver according to claim 5, wherein: A shift fork rotating shaft (21) is provided in the middle of the shift fork and the shift fork can rotate relative to the shift fork rotating shaft (21). The fork portion of the shift fork has two driving arms, each of which is provided with a shift fork push pin (22). The two shift fork push pins are distributed on both sides of the driven gear ring and are both embedded in the ring groove.

7. The manual-automatic integrated roller shutter driver according to claim 6, wherein: A rope is provided on the bottom side of the rod of the shift fork. Under the traction of the rope, the shift fork can rotate relative to the shift fork shaft.

8. Roller shutter structure, characterized in that, The invention comprises a roller shutter groove, a roller shutter assembly and a manual-automatic roller shutter drive as described in claims 1 to 7, wherein a first mounting frame (7) and a second mounting frame (8) are provided at the left and right ends of the roller shutter groove, and the two ends of the drive shaft are supported by the first mounting frame and the second mounting frame respectively, and the manual-automatic roller shutter drive is located between the first mounting frame and the second mounting frame and is sleeved on the drive shaft.

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