A new type of rolling door motor driven by synchronous belt

Abstract

This invention belongs to the technical field of electrically controlled rolling door motors, and specifically to a novel safe rolling door motor driven by a synchronous belt. It includes a door panel, a door shaft, a main pulley, a tensioning structure, a motor, and a synchronous belt. The door shaft has fixed rollers connected to the door panel. The main pulleys, fixedly connected to both ends of the door shaft, are driven by the synchronous belt. A spline pulley fixedly connected to the motor output shaft is driven by the synchronous belt. A tensioning structure is mounted on the synchronous belt. Both ends of the bottom door panel are fixedly connected to the synchronous belt, allowing it to slide up and down within the side door track. This invention provides traction to the door panel from both sides simultaneously, resulting in uniform force distribution and balanced movement. It features a simple structure, convenient installation, a clean and simple appearance, easy maintenance, anti-pry and anti-theft properties, wide applicability, obstacle-prone rebound, anti-fall, safety, and reliability. The synchronous belt drive results in low noise and stable operation. The bilateral synchronous drive ensures uniform force distribution and smooth operation of the door panel.

Description

Technical Field

[0001] This invention relates to the field of electronically controlled rolling door motor technology, specifically a novel rolling door motor driven by a synchronous belt. Background Technology

[0002] Currently available household and industrial roller doors, whether driven by a motor or manually, generally utilize the torque of a torsion spring to balance the weight of the door panel, thereby reducing the traction force required to open the door. This process involves fixing one end of the torsion spring to the main beam and adjusting the preload torque of the torsion spring, which is then transmitted to the roller reel. This provides the roller door with an upward lifting traction force, which is balanced with the weight of the door panel or curtain, thus reducing the lifting traction force required to open the door.

[0003] However, the above-mentioned transmission system structures generally have the following problems;

[0004] 1. Due to the special structure of roller doors, when the roller door is closed, if an upward pulling force is applied to the bottom of the door panel or curtain, the roller panel or curtain will expand and spread out at the roller box. This will prevent the door panel or curtain from locking itself when closed, and an additional door lock structure needs to be added to the bottom of the roller door to ensure that the roller door is not pry-proof, resulting in poor anti-theft performance.

[0005] 2. Due to the width of the roller door, the traction force provided on one side will cause the bottom door panel or curtain to be uneven when the roller door is open, which seriously affects the appearance.

[0006] 3. Due to structural limitations, the roller door motor cannot detect objects that suddenly appear directly below the door panel or curtain during the opening process, and cannot automatically stop operating. This poses a significant hazard to objects located below the door panel and results in poor safety.

[0007] 4. If the torsion spring is used frequently and for a long time in harsh environments, it may detach from the roller reel or break. Since the structure has no protective structure, the door panel may fall rapidly when the roller door is open, which is quite dangerous. Summary of the Invention

[0008] (a) Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this invention provides a novel rolling door motor driven by a synchronous belt, which solves the problems mentioned in the background section.

[0010] (II) Technical Solution

[0011] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0012] A novel rolling door motor driven by a synchronous belt includes a door panel, a door shaft, a main pulley, a tensioning structure, a motor, and a synchronous belt. A rolling wheel that abuts against the door panel is fixedly connected to the door shaft. The main pulleys fixedly connected to both ends of the door shaft are driven by the synchronous belt. A spline pulley fixedly connected to the output shaft of the motor is driven by the synchronous belt. A tensioning structure is placed on the synchronous belt. Both ends of the door panel are slidably connected to the side door rails.

[0013] Furthermore, the side door track is fixedly connected to the doorway wall at the installation location by anchor bolts. A bracket is fixedly connected to the upper part of the side door track by bolts. Both ends of the door hinge rest in the inclined slots on the bracket. A bearing sleeve is fitted at the connection between the door hinge and the bracket. One end of the torsion spring is fixedly connected to the roller, and the other end is fixedly connected to the bracket. A torsion spring fixing plug is fixedly connected to the door hinge at the connection between the torsion spring and the bracket. The end of the door hinge passes through the inclined slot on the bracket and is fixedly connected to the main pulley. The side door track has a sliding groove for the door panels to slide up and down. The door panels are fixedly connected and assembled to form a door curtain by door panel connecting pieces. The door panels and door panel connecting pieces are connected by pins. The door curtain is rotatably connected, with the upper door panel fixedly connected to the roller, and the lower door panel fixedly connected to the synchronous belt. The motor is fixedly connected to the bracket on the side door rail. The spline pulley on the motor output shaft is connected to the transmission pulley via the synchronous belt. The transmission pulley is fixedly sleeved on the drive pulley. The lower part of the synchronous belt on the drive pulley rests on the tensioning structure located at the corresponding position on the lower part of the side door rail. The synchronous belt is configured as an upper closed belt body and a lower open belt body. The closed belt body rests on the main pulley, the tensioning structure, the spline pulley, and the transmission pulley. The open belt body is closed by a connecting piece and is respectively connected to the drive pulley and the tensioning structure at the lower part of the side door rail.

[0014] Furthermore, a clutch pull rope is installed at the power output end of the motor.

[0015] Furthermore, the tensioning structure includes a base frame and a wheel frame slidably mounted on the base frame. An abutting pulley that abuts against the timing belt is rotatably connected to the wheel frame. The base frame is fixedly connected to the side door rail by bolts. The wheel frame is slidably mounted in an adjustment groove opened on the base frame. A limiting bolt for fixing and limiting is threaded onto the wheel frame.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, the present invention provides a novel rolling door motor driven by a synchronous belt, which has the following characteristics:

[0018] Beneficial effects:

[0019] This invention provides traction force to the door panel from both sides simultaneously, ensuring even force distribution and balanced movement. Furthermore, if an object obstructs the movement during the opening or closing of the roller door, a built-in obstacle detection and rebound program is triggered, stopping the downward movement or retracting the roller door to prevent harm to people or objects below the door panel and providing a degree of safety protection for the door itself. Simultaneously, the door panel is connected to synchronous belts on both sides of the track. When the motor is stopped, the synchronous belts are locked, preventing the door panel from falling regardless of whether the torsion spring is disengaged from the roller wheel, greatly increasing the safety of the roller door. The invention features a simple structure, convenient installation, a clean and minimalist appearance, easy maintenance, anti-pry and anti-theft features, and a wide range of applications. The obstacle detection and rebound mechanism prevents the door panel from falling, ensuring safety and reliability. The synchronous belt drive results in low noise and stable operation, with even force distribution and smooth operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the left-side structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the right-side structure of the present invention;

[0023] Figure 4 For the present invention Figure 1 Schematic diagram of the structure at point A;

[0024] Figure 5 For the present invention Figure 2 Schematic diagram of the structure at point C;

[0025] Figure 6 For the present invention Figure 3 Schematic diagram of the structure at point D;

[0026] Figure 7 For the present invention Figure 1 A schematic diagram of the structure at point B.

[0027] In the diagram: 1. Door panel; 2. Roller; 3. Door hinge; 4. Torsion spring; 5. Side door track; 6. Main pulley; 7. Tensioning structure; 8. Motor; 9. Synchronous belt; 10. Splined pulley; 11. Clutch pull rope; 12. Door panel connecting piece; 13. Bracket; 14. Slanted groove; 15. Torsion spring fixing plug; 16. Drive pulley; 17. Transmission pulley. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Example

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown in one embodiment of the present invention, a novel synchronous belt-driven rolling door motor includes a door panel 1, a door shaft 3, a main pulley 6, a tensioning structure 7, a motor 8, and a synchronous belt 9. A rolling wheel 2, which abuts against the door panel 1, is fixedly connected to the door shaft 3, ensuring smooth connection between the two for easy rolling up of the door curtain assembled with the door panel 1. The main pulley 6, fixedly connected to both ends of the door shaft 3, is driven by the synchronous belt 9, ensuring effective driving of the door shaft 3 through the cooperation of the synchronous belt 9 and the main pulley 6. A spline pulley 10, fixedly connected to the output shaft of the motor 8, is driven by the synchronous belt 9, enabling effective driving of the synchronous belt 9 by the motor 8. A clutch pull rope 11 is installed at the power output end of the motor 8. The tensioning structure 7 is placed on the synchronous belt 9 to adjust the synchronous belt 9. The tension of the timing belt 9 ensures effective transmission between the timing belt 9 and each pulley. Both ends of the door panel 1 are slidably connected to the side door rail 5, ensuring smooth rolling and unfolding of the curtain. During operation, the motor 8 drives the spline pulley 10 to rotate. As the spline pulley 10 rotates, it drives the main pulley 6 and the transmission pulley 17 through the timing belt 9 above, thereby driving the door shaft 3 and the roller 2 to rotate together to roll up the curtain formed by the door panel 1. At this time, the curtain will slide on the side door rail 5 as it rolls up, smoothly completing the curtain rolling. At the same time, the transmission pulley 17 drives the timing belt 9 below to rotate through the drive pulley 16. The timing belt 9 drives the lower door panel 1 of the curtain to slide on the side door rail 5, ensuring smooth completion of the curtain rolling and unfolding operation.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, in some embodiments, the side door track 5 is fixedly connected to the doorway wall at the installation location by anchor bolts, ensuring stable installation of the side door track 5 and providing a stable frame for the installation of the door curtain, as well as a stable track for the rolling and unfolding of the door curtain, ensuring smooth operation. The upper part of the side door track 5 is fixedly connected to the bracket 13 by bolts. The two ends of the door hinge 3 rest in the inclined slots 14 opened on the bracket 13, improving the convenience of the roller door assembly installation. A bearing sleeve is fitted at the connection between the door hinge 3 and the bracket 13, allowing the door hinge 3 to rotate smoothly. One end of the torsion spring 4 is fixedly connected to the roller 2, and the other end is fixedly connected to the bracket 13. The preload of the torsion spring 4 is used to balance the weight of the door panel, ensuring the flatness of the door panel. Stability is ensured by a torsion spring fixing plug 15 fixedly connected to the door hinge 3 at the connection between the torsion spring 4 and the bracket 13. The torsion spring fixing plug 15 enhances the stability of the connection between the torsion spring 4 and the bracket 13. The end of the door hinge 3 passes through the inclined slot 14 on the bracket 13 and is fixedly connected to the main pulley 6. The side door track 5 is provided with a sliding groove to cooperate with the up and down sliding of the door panel 1, ensuring that the curtain assembled from the door panels 1 can slide smoothly on the side door track 5. The door panels 1 are fixedly connected and assembled to form the curtain through the door panel connecting piece 12, which stably connects the door panels 1 together. The door panels 1 and the door panel connecting piece 12 are rotatably connected by a pin, which allows the door panels 1 to rotate during the curtain rolling process to meet the rolling requirements. The upper part of the curtain... Door panel 1 is fixedly connected to roller 2, ensuring that the curtain can be smoothly rolled up by rotating roller 2. The lower part of door panel 1 is fixedly connected to synchronous belt 9, ensuring that the synchronous belt 9 drives the lower part of door panel 1 to move, making it smoother to complete the rolling and unfolding operations. Motor 8 is fixedly connected to bracket 13 on side door track 5, ensuring stable installation and power output of motor 8. Spline pulley 10 on the output shaft of motor 8 is connected to transmission pulley 17 via synchronous belt 9. Transmission pulley 17 is fixedly sleeved on drive pulley 16. The lower part of synchronous belt 9, which rests on drive pulley 16, rests on tensioning structure 7 located at the corresponding position on the lower part of side door track 5. The tension of synchronous belt 9 is adjusted to achieve effective transmission. The timing belt 9 is configured with an upper closed belt body and a lower open belt body. The closed belt body rests on the main pulley 6, tensioning structure 7, spline pulley 10 and transmission pulley 17. The open belt body is closed by a connecting piece. The open belt body is respectively connected to the drive pulley 16 and the tensioning structure 7 at the bottom of the side door rail 5. The timing belt 9 is configured in two parts. The tension between the timing belt 9 and the pulley can be adjusted by adjusting the tensioning structure 7. The length of the timing belt 9 can be adjusted according to the height of the door opening. At the same time, the tension between the timing belt 9 and the pulley can be adjusted by the tensioning structure 7 at the bottom. When the motor 8 stops running, the timing belt 9 cannot rotate by external force, which causes the relevant transmission structure to be locked, thereby achieving the purpose of preventing the door panel 1 from being pried open.

[0032] Among them: the two main pulleys 6 are connected by the central door hinge 3 to move synchronously. Both sides simultaneously provide traction force to the door panel 1 through the synchronous belt 9. The force on both sides of the door panel 1 is even, so the movement is balanced. When the roller door is fully open, the bottom door panel 1 can also achieve a horizontal effect. In addition, when the roller door is closing and descending, if a person or object suddenly appears directly below the door panel 1 to stop the movement, the resistance of the door panel 1 moving downward will greatly increase, which will cause a sudden increase in the power of the motor 8. The sudden positive fluctuation of the load current of the motor 8 will trigger the obstacle detection and rebound program built into the electronic system. This program is a known existing technical means, so it will not be described in detail. That is, the downward movement is stopped or the roller door is rolled up in the opposite direction to prevent harm to the person or object below the door panel 1, and also to provide a certain degree of safety protection for the door body 1.

[0033] In most rolling door motors on the market, the torsion spring 4 may detach from the roller reel or break due to long-term and frequent use in harsh environments. Since this structure lacks a protective structure, the door panel may fall rapidly when the rolling door is open, which is quite dangerous. This invention can effectively avoid such problems. Since the door panel 1 is connected to the synchronous belts 9 on both sides, the synchronous belts 9 are locked when the motor 8 is stopped. In this state, regardless of whether the torsion spring 4 is disengaged from the roller reel, the door panel 1 cannot fall, thus greatly increasing the safety of the rolling door.

[0034] like Figure 1 , Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the tensioning structure 7 includes a base frame and a wheel frame slidably mounted on the base frame. An abutting pulley that abuts against the timing belt 9 is rotatably connected to the wheel frame. The base frame is fixedly connected to the side rail 5 by bolts. The wheel frame is slidably mounted in an adjusting groove opened on the base frame. A limiting bolt for fixing and limiting is threaded onto the wheel frame.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention. 。

Claims

1. A novel rolling door motor driven by a synchronous belt, comprising a door panel (1), a door hinge (3), a main pulley (6), a tensioning structure (7), a motor (8), and a synchronous belt (9), characterized in that: A roller (2) is fixedly connected to the door shaft (3) and abuts against the door panel (1). A synchronous belt (9) is driven to the main pulley (6) fixedly connected to both ends of the door shaft (3). A spline pulley (10) fixedly connected to the output shaft of the motor (8) is driven to the synchronous belt (9). A tensioning structure (7) is placed on the synchronous belt (9). Both ends of the door panel (1) are fixedly connected to the synchronous belt and can slide up and down in the side door rail (5). The side door track (5) is fixedly connected to the door opening wall at the installation location by anchor bolts. The upper part of the side door track (5) is fixedly connected to the bracket (13) by bolts. The two ends of the door hinge (3) rest in the inclined slot (14) opened on the bracket (13). The connection between the door hinge (3) and the bracket (13) is fitted with a bearing sleeve. One end of the torsion spring (4) is fixedly connected to the roller (2) and the other end is fixedly connected to the bracket (13). A torsion spring fixing plug (15) is fixedly connected to the door hinge (3) at the connection between the torsion spring (4) and the bracket (13). The end of the door hinge (3) passes through the inclined slot (14) on the bracket (13) and is fixedly connected to the main pulley (6). The side door track (5) is provided with a sliding groove for sliding the door panel (1) up and down. The door panels (1) are fixedly connected and assembled to form a door curtain through the door panel connecting piece (12). The door panel (1) and the door panel connecting piece (12) are rotatably connected by a pin. The upper door panel (1) of the door curtain is fixedly connected to the roller (2), and the lower door panel (1) of the door curtain is fixedly connected to the synchronous belt (9). The motor (8) is fixedly connected to the bracket (13) on the side door track (5). The spline pulley (10) on the output shaft of the motor (8) is connected to the transmission pulley (17) through the synchronous belt (9). The transmission pulley (17) is fixedly sleeved on the drive pulley (16), and the lower part of the synchronous belt (9) placed on the drive pulley (16) rests on the tensioning structure (7) installed at the corresponding position of the lower part of the side door rail (5). The synchronous belt (9) is configured as an upper closed belt body and a lower open belt body. The closed belt body rests on the main pulley (6), the tensioning structure (7), the spline pulley (10) and the transmission pulley (17). The open belt body is closed by a connecting piece. The open belt body is respectively connected to the drive pulley (16) and the tensioning structure (7) at the bottom of the side door rail (5).

2. The novel rolling door motor driven by a synchronous belt according to claim 1, characterized in that: The power output end of the motor (8) is equipped with a clutch pull rope (11).

3. The novel rolling door motor driven by a synchronous belt according to claim 1, characterized in that: The tensioning structure (7) includes a base frame and a wheel frame that is slidably mounted on the base frame. A pulley that abuts against the timing belt (9) is rotatably connected to the wheel frame. The base frame is fixedly connected to the side rail (5) by bolts. The wheel frame is slidably mounted in an adjustment groove opened on the base frame. A limit bolt for fixing the limit is threaded on the wheel frame.

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