Electric drive device for roller shutter door
Patent Information
- Application Number
- CN202521300144.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-24
- Publication Date
- 2026-10-09
- Estimated Expiration
- 2035-06-24
AI Technical Summary
[0002]常规卷帘门驱动机构布置在车厢开口处顶部帘片总成的一侧，卷帘两边有轴承组在两侧滑轨内滚动，轴承通过固定销轴和帘片总成铰接，而驱动齿轮为同轴的两个棘轮，电机通过蜗轮蜗杆传动提供输出扭矩，对帘片总成在转轴上进行绕卷，实现卷帘的收放，卷帘绕轴收卷后直径变大，占用门口较大空间同时车厢单侧重量较大，不利于放置较大件物品，另外若仅用一个驱动电机需要较长的刚性转轴和棘轮才能实现卷帘两侧同步移动，重量重；滚动轴承间距大，棘轮传动时噪音较大，棘齿承受载荷大；棘轮齿距较大卷帘移动时控制精度低，驱动布置在卷帘一侧会对开口空间造成影响，因此有必要对现有的卷帘门电驱动装置进行改进
[0012]1. Placing the drive unit on the top of the closed surface inside the vehicle compartment provides better protection (waterproof, dustproof, and aging resistant, etc.) than placing it on the edge of the roller shutter door, which can effectively reduce the protection requirements for the drive mechanism.
Smart Images
Figure CN224834871U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of roller shutter door technology, specifically relating to an electric drive device for roller shutter doors. Background Technology
[0002] Conventional roller shutter door drive mechanisms are located on one side of the top curtain assembly at the opening of the carriage. Bearing assemblies on both sides of the roller shutter roll within side rails. The bearings are hinged to the curtain assembly via fixed pins. The drive gears are two coaxial ratchet wheels. A motor provides output torque through a worm gear transmission, causing the curtain assembly to wind around the shaft, thus opening and closing the roller shutter. After winding around the shaft, the diameter of the roller shutter increases, occupying a large space at the doorway. Additionally, the weight on one side of the carriage is significant, making it unsuitable for placing large items. Furthermore, using only one drive motor requires a long, rigid shaft and ratchet wheels to achieve synchronous movement on both sides of the roller shutter, resulting in heavy weight. The large spacing between the rolling bearings leads to significant noise during ratchet transmission, and the ratchet teeth bear a large load. The large ratchet tooth pitch also results in low control precision during roller shutter movement. Furthermore, arranging the drive mechanism on one side of the roller shutter affects the opening space. Therefore, it is necessary to improve the existing electric drive device for roller shutter doors. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a roller shutter door electric drive device that can achieve uniform force on both sides, is lightweight, can make more efficient use of the interior space of the carriage, and ensures control precision, in light of the current state of the technology.
[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an electric drive device for a roller shutter door, characterized in that it includes a vehicle body and a roller shutter assembly, a pulley assembly, a synchronous belt connecting bracket, a synchronous belt, a central electric drive mechanism, a reversing mechanism, and left and right side slide rails arranged on the vehicle body. The left and right side slide rails are arranged on the left and right sides of the vehicle body assembly. The roller shutter assembly is installed and connected to the pulley assembly and can slide on the left and right side slide rails by relying on the pulley assembly. The central electric drive mechanism is arranged in the middle of the roller shutter door inside the vehicle body assembly. The synchronous belt is connected to the central electric drive mechanism and the reversing mechanism respectively. The roller shutter assembly is fixedly connected to the synchronous belt through the synchronous belt connecting bracket. The central electric drive mechanism can electrically lift the roller shutter assembly of the vehicle body assembly and lay it flat on the roof of the vehicle body through the synchronous belt.
[0005] In the aforementioned electric drive device for a roller shutter door, the centrally located electric drive mechanism includes a motor, a Hall effect sensor, a wiring harness assembly, a transmission gear, a synchronous belt drive pulley, a small guide pulley, a tension spring, a guide bracket, a tension pulley, a main housing, and a motor end cover. The synchronous belt drive pulley is connected to the transmission gear and is driven by the transmission gear to rotate around its axis, while simultaneously meshing with the synchronous belt. The toothless surface of the synchronous belt is in close contact with the small guide pulley and the tension pulley, and both the small guide pulley and the tension pulley have upper and lower flanges to keep the synchronous belt in the middle of the pulley.
[0006] In the above-mentioned electric drive device for a roller shutter door, the tension wheel journal is in contact with the concave arc surface of the right plane of the guide bracket and can rotate flexibly around the axis of the tension wheel. The upper, lower, front, and rear of the guide bracket are flat and are in contact with the guide groove of the main housing and the motor end cover for guidance and movement. The left plane of the guide bracket has a cylindrical structure and is nested with one end of the tension spring, and the other end of the tension spring abuts against the main housing.
[0007] In the aforementioned electric drive device for a roller shutter door, the reversing mechanism is arranged at the top center of the roller shutter opening in the vehicle body, and includes front and rear housings and a secondary synchronous pulley. The upper and lower top surfaces of the secondary synchronous pulley each have a convex shaft that is hinged between the front and rear housings and can rotate freely around its axis. The secondary synchronous pulley and the synchronous belt mesh for transmission.
[0008] In the aforementioned electric drive device for a roller shutter door, the electronic lock assembly includes an electronic lock, a bolt, a protective housing, and a reinforcing latch. The electronic lock assembly penetrates horizontally and is installed on the outer plane of the last roller shutter slat with screws. The bolt is L-shaped, and the electronic lock shaft connected to it vertically can rotate 90° perpendicular to the roller shutter assembly, allowing the bolt to switch between a horizontal and vertical state. The bolt can be locked by hooking onto the reinforcing latch installed at the bottom of the floor, and vice versa.
[0009] In the aforementioned electric drive device for a roller shutter door, damping pads are installed at the inner ends of the left and right side slide rails. When the roller shutter door is opened, the roller shutter assembly and the damping pads press against each other, generating friction. When the central electric drive mechanism is de-energized, it can offset part of the weight of the roller shutter and allow it to hover, preventing it from automatically closing due to its own weight.
[0010] In the aforementioned electric drive device for a roller shutter door, a detachable and movable synchronous belt connecting bracket is bolted onto the synchronous belt. The synchronous belt connecting bracket is centrally connected to the roller shutter assembly. The synchronous belt has a limiting block. The front part of the limiting block has an arc surface that can seamlessly fit with the housing of the reversing mechanism. The rear part of the limiting block is a plane and is parallel to the plane of the centrally located electric drive mechanism.
[0011] Compared with the prior art, the advantages of this utility model are:
[0012] 1. Placing the drive unit on the top of the closed surface inside the vehicle compartment provides better protection (waterproof, dustproof, and aging resistant, etc.) than placing it on the edge of the roller shutter door, which can effectively reduce the protection requirements for the drive mechanism.
[0013] 2. When the door is opened, the roller shutter is laid flat on the top of the carriage, eliminating the need for a long roller system that occupies a large opening space. There is no need to consider the rigidity of the shaft (insufficient rigidity will prevent the roller shutter from rolling up simultaneously on both sides), which can effectively reduce the overall weight of the system.
[0014] 3. It can realize intelligent functions such as electric and emergency manual opening and closing, anti-pinch function, and locking, as well as high-precision door position and status indication function. The entire synchronous belt has a small and dense tooth pitch, resulting in high control accuracy; synchronous belt drive has lower noise than gear drive. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the electric drive device for this roller shutter door;
[0016] Figure 2 This is a schematic diagram of the opening and closing state structure of the electric drive device for this roller shutter door;
[0017] Figure 3 This is a schematic diagram of the cooperation structure between the commutation mechanism and the synchronous belt;
[0018] Figure 4 This is a schematic diagram of the working structure of the centrally located electric drive mechanism;
[0019] Figure 5 This is a schematic diagram of the installation structure of the electronic lock assembly. Detailed Implementation
[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0021] In the diagram, the roller shutter assembly is 100; the pulley assembly is 200; the synchronous belt connecting bracket is 300; the synchronous belt is 400; the limit block is 401; the central electric drive mechanism is 500; the synchronous belt drive pulley is 501; the small guide pulley is 502; the tension spring is 503; the guide bracket is 504; the tension pulley is 505; the main housing is 506; the motor end cover is 507; the reversing mechanism is 600; the front and rear housings are 601; the auxiliary synchronous belt pulley is 602; the left and right side slide rails are 700; the electronic lock assembly is 800; the steel bolt is 801; the protective housing is 802; and the reinforced buckle is 803.
[0022] like Figure 1 as well as Figure 2As shown, this electric drive device for the roller shutter door includes a vehicle body and a roller shutter assembly 100, a pulley assembly 200, a timing belt connecting bracket 300, a timing belt 400, a central electric drive mechanism 500, a reversing mechanism 600, and left and right side slide rails 700 arranged on the vehicle body assembly. The left and right side slide rails 700 are arranged on the left and right sides of the vehicle body assembly. The roller shutter assembly 100 is installed and connected to the pulley assembly 200 and can slide on the left and right side slide rails 700 by means of the pulley assembly 200. The central electric drive mechanism 500 is arranged in the middle of the roller shutter door inside the vehicle body assembly. The timing belt 400 is connected to the central electric drive mechanism 500 by means of... The roller shutter assembly 100 is connected to the reversing mechanism 600 and fixedly connected to the synchronous belt 400 via the synchronous belt connecting bracket 300. The centrally located electric drive mechanism 500 can electrically lift the roller shutter assembly 100 of the vehicle body assembly and lay it flat on the roof of the vehicle body via the synchronous belt 400. The centrally located drive mechanism solution of this patent can achieve uniform force on both sides, without the need for additional synchronous gears and shafts at both ends, and is lightweight. In addition, it is hidden in the top of the inner closed surface of the vehicle body, reducing the corrosion of the drive mechanism by ultraviolet rays, rainwater, etc., and extending the service life. At the same time, the synchronous belt 400 is used to drive the opening and closing of the roller shutter door, which can achieve precise stroke control and reduce noise.
[0023] like Figure 4 As shown, as an optimization, the centrally located electric drive mechanism 500 includes a motor, a Hall effect sensor, a wiring harness assembly, a transmission gear, a synchronous belt drive pulley 501, a small guide pulley 502, a tension spring 503, a guide bracket 504, a tension pulley 505, a main housing 506, and a motor end cover 507. The synchronous belt drive pulley 501 is connected to the transmission gear and is driven by the transmission gear to rotate around its axis. At the same time, it meshes with the synchronous belt 400. The toothless surface of the synchronous belt 400 is in close contact with the small guide pulley 502 and the tension pulley 505. Both the small guide pulley 502 and the tension pulley 505 have upper and lower flanges to keep the synchronous belt 400 in the middle of the pulley. Here, because the small guide wheel 502 and the tension wheel 505 have up and down flanges, the synchronous belt 400 can always be kept in the middle of the wheel, which can prevent the synchronous belt 400 from deviating and rubbing against the housing and end cover. The journal of the tension wheel 505 can rotate flexibly around the axis of the tension wheel 505 after it fits against the concave arc surface of the right plane of the guide bracket 504. The guide bracket 504 is flat on the top, bottom, front and back, and fits against the guide groove of the main housing 506 and the motor end cover 507 to guide the movement. The left plane of the guide bracket 504 has a cylindrical structure and is nested with one end of the tension spring 503. The other end of the tension spring 503 abuts against the main housing 506.
[0024] As a further optimization, such as Figure 3As shown, the reversing mechanism 600 is arranged at the center of the top of the roller shutter opening in the vehicle body, and includes front and rear housings 601 and a secondary synchronous pulley 602. The secondary synchronous pulley 602 has a convex shaft on each of its upper and lower top surfaces, hinged between the front and rear housings 601 and capable of free rotation around its axis. The secondary synchronous pulley 602 meshes with the synchronous belt 400 for transmission. Damping pads are installed at the inner ends of the left and right side slide rails 700. When the roller shutter door is opened, the roller shutter assembly 100 presses against the damping pads, generating friction. When the central electric drive mechanism 500 is de-energized, it can offset part of the roller shutter's weight, allowing it to hover and preventing it from automatically closing due to its own weight. A detachable and movable synchronous belt connecting bracket 300 is bolted onto the synchronous belt 400. The synchronous belt connecting bracket 300 is simultaneously positioned... The timing belt 400 is connected to the roller shutter assembly 100. The timing belt 400 has a limiting block 401. The front part of the limiting block 401 has an arc surface that can seamlessly fit with the housing of the reversing mechanism 600. The rear part of the limiting block 401 is flat and parallel to the plane of the central electric drive mechanism 500. Here, the number of teeth of the timing belt 400 is denser than that of a conventional ratchet mechanism, which can accurately control the travel of the roller shutter door. The Hall element inside the central electric drive mechanism 500 can provide timely feedback on the position signal of the roller shutter door. When the roller shutter door is closed, the limiting block 401 moves close to the central electric drive mechanism 500 to prevent the roller shutter door from closing too far. When the roller shutter door is opened, the limiting block 401 moves with the timing belt 400 to the opening of the roller shutter door, and the front arc surface abuts against the outer surface of the housing of the reversing mechanism 600 to prevent the roller shutter door from opening too far.
[0025] like Figure 5 As shown, the electronic lock assembly 800 includes an electronic lock, a bolt 801, a protective housing 802, and a reinforcing latch 803. The electronic lock assembly 800 penetrates horizontally and is installed on the outer plane of the last roller shutter slat with screws. The bolt 801 is L-shaped, and the electronic lock shaft connected to it vertically can rotate 90° perpendicular to the roller shutter assembly 100, allowing the bolt 801 to switch between horizontal and vertical states. The bolt 801 can lock by hooking onto the reinforcing latch 803 installed at the bottom of the floor, and unlock by moving it away from the floor. The electronic lock can be electrically opened and closed through various functional modules, such as Bluetooth modules, RS485, DO interfaces, etc., to achieve Bluetooth, card swiping, key, and APP remote control unlocking. The opening and closing status of the hatch can be fed back to the ECU through the lock signal. In case of failure of the central electric drive mechanism 500, it can also be manually unlocked and locked from the outside with a key.
[0026] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications to the described specific embodiments or adopt similar methods to replace them, but without departing from the scope defined by the spirit of this utility model.
Claims
1. An electric drive device for a roller shutter door, characterized in that, The system includes a vehicle body and a roller shutter assembly, a pulley assembly, a timing belt connecting bracket, a timing belt, a centrally located electric drive mechanism, a reversing mechanism, and left and right side rails arranged on the vehicle body assembly. The left and right side rails are located on the left and right sides of the vehicle body assembly. The roller shutter assembly is installed and connected to the pulley assembly and can slide on the left and right side rails by means of the pulley assembly. The centrally located electric drive mechanism is located in the middle of the roller shutter door inside the vehicle body assembly. The timing belt is connected to the centrally located electric drive mechanism and the reversing mechanism respectively. The roller shutter assembly is fixedly connected to the timing belt through the timing belt connecting bracket. The centrally located electric drive mechanism can electrically lift the roller shutter assembly of the vehicle body assembly and lay it flat on the roof of the vehicle body through the timing belt.
2. The electric drive device for a roller shutter door according to claim 1, characterized in that, The centrally located electric drive mechanism includes a motor, Hall effect sensor, wiring harness assembly, transmission gear, synchronous belt drive pulley, small guide pulley, tension spring, guide bracket, tension pulley, main housing, and motor end cover. The synchronous belt drive pulley is connected to the transmission gear and driven by the transmission gear to rotate around its axis, while simultaneously meshing with the synchronous belt. The toothless surface of the synchronous belt is in close contact with the small guide pulley and the tension pulley, and both the small guide pulley and the tension pulley have upper and lower flanges to keep the synchronous belt in the middle of the pulley.
3. The electric drive device for a roller shutter door according to claim 2, characterized in that, The tension wheel journal and the right plane of the guide bracket are concave arc surfaces that fit together and can rotate flexibly around the tension wheel axis. The guide bracket is flat at the top, bottom, front, and back, and fits with the guide groove of the main housing and the motor end cover for guidance and movement. The left plane of the guide bracket has a cylindrical structure that is nested with one end of the tension spring, and the other end of the tension spring abuts against the main housing.
4. A roller shutter door electric drive device according to claim 1 or 2, characterized in that, The reversing mechanism is located at the top center of the roller shutter opening in the vehicle body and consists of front and rear housings and a secondary synchronous pulley. Each of the upper and lower top surfaces of the secondary synchronous pulley has a convex shaft that is hinged between the front and rear housings and can rotate freely around its axis. The secondary synchronous pulley and the synchronous belt mesh for transmission.
5. The electric drive device for a roller shutter door according to claim 1, characterized in that, The electric drive device for the roller shutter door also includes an electronic lock assembly, which comprises an electronic lock, a bolt, a protective housing, and a reinforcing latch. The electronic lock assembly is horizontally penetrated and screwed onto the outer plane of the last roller shutter slat. The bolt is L-shaped, and the electronic lock shaft connected to it vertically can rotate 90° perpendicular to the roller shutter assembly, allowing the bolt to switch between a horizontal and vertical position. The bolt can be locked by hooking onto the reinforcing latch installed at the bottom of the floor, and vice versa.
6. The electric drive device for a roller shutter door according to claim 1, characterized in that, Damping pads are installed at the inner ends of the left and right side slide rails.
7. The electric drive device for a roller shutter door according to claim 2, characterized in that, The synchronous belt is bolted with a detachable and movable synchronous belt connecting bracket, which is centrally connected to the roller shutter assembly. The synchronous belt has a limiting block, the front of which has an arc surface that can seamlessly fit with the housing of the reversing mechanism, and the rear of which is a plane that is parallel to the plane of the centrally located electric drive mechanism.