Rolling door device

Abstract

The application provides a rolling door device, which comprises two sets of guide rails, the two sets of guide rails are oppositely and spacedly arranged, each set of guide rails comprises a straight track and a winding track, the winding track is single-rail and connected to one end of the straight track in the extending direction, the winding track is helical to form a plurality of coil bodies, and adjacent two coil bodies jointly restrict a helical track space; a door plate is arranged between the two sets of guide rails, and two ends of the door plate in the width direction are respectively slidably connected with the two sets of guide rails, when the door plate is in the winding track, the two ends of the door plate in the width direction are restricted in the track space; and a driving assembly is connected to the door plate and can drive the door plate to move along the straight track and / or the winding track, when the driving assembly drives the door plate in the winding track, the door plate moves along the direction of the track space. The winding track adopts a single-rail structure, the space occupation can be reduced, and then the top installation space required by the rolling door device is reduced, and the height of the door opening is increased.

Description

Technical Field

[0001] This application relates to the field of rolling door technology, specifically to a rolling door device. Background Technology

[0002] Rigid high-speed rolling doors are vertical lifting devices widely used in industrial plants, commercial spaces, underground parking garages, and other similar environments. The core structure of existing rigid high-speed rolling doors typically includes: guide rails, door panels, a motor, and a chain. The guide rails consist of connected straight and winding tracks. The door panels are movably mounted on the guide rails. The chain connects the motor and the door panels, allowing the motor to drive the door panels along either the straight or winding tracks. When the door panels are driven onto the winding tracks, the rigid high-speed rolling door is in the open state; when driven onto the straight tracks, it is in the closed state. However, in related technologies, a double-track structure is used for the winding tracks. This double-track structure involves two winding tracks interlocking to constrain the movement path of the door panels. This double-track structure occupies a significant amount of top installation space in the height direction of the rigid high-speed rolling door. Utility Model Content

[0003] This application provides a rolling door device in which the rolling track adopts a single-track structure, which can reduce the space occupied, thereby reducing the top installation space required for the rolling door device and increasing the height of the door opening.

[0004] The rolling door device includes: Two sets of guide rails are arranged opposite each other and spaced apart. Each set of guide rails includes a straight rail and a winding rail. The winding rail is a single rail and is connected to one end of the straight rail in the extension direction. The winding rail is spiral to form multiple loops. Two adjacent loops together constrain the spiral rail space. A door panel, wherein the door panel is disposed between two sets of guide rails, and both ends of the door panel in the width direction are slidably connected to the two sets of guide rails respectively; when the door panel is in the winding track, both ends of the door panel in the width direction are constrained in the track space; and A drive assembly is connected to the door panel and can drive the door panel to move along the straight track and / or the winding track. When the drive assembly drives the door panel on the winding track, the door panel moves along the direction of the track space.

[0005] In one embodiment, the door panel includes a panel body and a plurality of rollers disposed at both ends of the panel body in the width direction. The rollers are rotatably connected to the panel body. When the door panel is in the winding track, the rollers are constrained between two adjacent rings and can move along the direction of the track space under the drive of the drive assembly.

[0006] In one embodiment, the panel includes at least two single panels that are movably connected in sequence. When the door panel is located on the straight track, the arrangement direction of the at least two single panels is the extension direction of the straight track. When the door panel is located on the winding track, a certain angle is formed between two adjacent single panels to adapt to the bending shape of the winding track.

[0007] In one embodiment, the winding track includes a first bend, a main body, and a second bend. The main body, the first bend, and the second bend are all spiral-shaped. The main bodies, the first bend, and the second bend of two adjacent coils together constrain a spiral track space. The first bend and the second bend are arranged opposite to each other and are both bent and connected to both sides of the main body. The first bend and the second bend are used to cooperate in confining the roller in the track space in a preset direction, wherein the preset direction is the relative direction of the first bend and the second bend.

[0008] In one embodiment, the distance between the main body portions of two adjacent rings is greater than the diameter of the roller.

[0009] In one embodiment, the drive assembly includes a driver, a drive shaft, and two synchronous belts. The driver and the drive shaft are both located at the far end of the rolling door device, and the driver is connected to the drive shaft. The two synchronous belts are respectively located on both sides of the door panel in the width direction, and both synchronous belts are connected to the door panel. The two synchronous belts are connected through the drive shaft. The driver is used to drive the drive shaft to rotate, so that the drive shaft drives the synchronous belts to rotate, thereby causing the synchronous belts to drive the door panel to move.

[0010] In one embodiment, the drive assembly further includes two sets of synchronous pulleys, which are respectively disposed on both sides of the door panel in the width direction. Each set of synchronous pulleys includes a driving pulley and a driven pulley. The driving pulley is disposed at the far end of the rolling door device and sleeved on the drive shaft. The driven pulley is rotatably disposed at the near end of the rolling door device. One end of the synchronous belt is sleeved on the outer periphery of the driving pulley and the other end is sleeved on the outer periphery of the driven pulley. The drive unit drives the synchronous belt to rotate through the driving pulley and the driven pulley.

[0011] In one embodiment, the drive assembly further includes a torsion spring sleeved on the drive shaft. One end of the torsion spring is fixed to the drive shaft in the longitudinal direction, and the other end is fixed relative to the guide rail. When the rolling door device is in the closed state, the torsion spring is in a torsional state and applies a first torque to the drive shaft. The door panel applies a second torque to the drive shaft in sequence through the synchronous belt and the drive wheel. The first torque is greater than or equal to the second torque, and the directions of the first torque and the second torque are opposite.

[0012] In one embodiment, when the roller door device changes from a closed state to an open state, the torsion spring changes from a torsional state to a non-torsional state; when the roller door device changes from an open state to a closed state, the torsion spring changes from a non-torsional state to a torsional state.

[0013] In one embodiment, the rolling door device further includes a receiving frame and two uprights. The receiving frame is located at the far end of the rolling door device, the winding track is located inside the receiving frame, the two uprights are respectively located on both sides of the door panel in the width direction, and the straight track is located inside the uprights.

[0014] In this application, the roller door device uses a single-track winding system. A single track means that each set of guide rails has only one winding track. This single track winds up to form multiple spiral coils. Adjacent coils together constrain the spiral track space. When the door panel is on the winding track, the track space constrains both ends of the door panel in the width direction, allowing the door panel to move along the track space. It is understood that compared to a double-track structure, the single-track structure has a smaller overall volume of winding track, thus reducing the space occupied and consequently reducing the top installation space required for the roller door device, while increasing the height of the door opening. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementations of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A schematic diagram of the roller door device provided in the embodiment of this application in the closed state; Figure 2 A schematic diagram of the roller door device provided in the embodiment of this application in the open state; Figure 3 for Figure 1 A schematic diagram of the roller door assembly shown behind the concealed structure. Figure 4 for Figure 3 The side view of the roller door assembly shown; Figure 5 A partial schematic diagram of a door panel provided in an embodiment of this application; Figure 6 A schematic diagram showing that the winding track provided in this application is a spiral track; Figure 7 for Figure 6 The cross-sectional view of the winding track along line AA shown; Figure 8 for Figure 4 A schematic diagram of the roller door assembly shown behind the concealed structure. Figure 9 This is a schematic diagram of an elliptical track provided in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: Roller door assembly - 1; guide rail - 10; straight track - 110; winding track - 120; first bend - 121; main body - 122; second bend - 123; ring body - 120X; track space - X1; door panel - 20; panel body - 210; single panel - 211; roller - 220; drive assembly - 30; driver - 310; drive shaft - 320; synchronous belt - 330; drive wheel - 340; driven wheel - 350; torsion spring - 360; column - 50; receiving frame - 60; door opening - X2. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] Please refer to Figures 1 to 2 This application provides a rolling door device 1, which can be used in industrial plants, commercial places, underground garages and other scenarios. In some embodiments, the rolling door device 1 provided by this application can also be called a rigid high-speed rolling door, a rolling shutter door, etc.

[0021] Please refer to Figures 1 to 4 The rolling door device 1 includes: two sets of guide rails 10, a door panel 20, and a drive assembly 30. The two sets of guide rails 10 are arranged opposite each other and spaced apart. Each set of guide rails 10 includes a straight track 110 and a winding track 120. The winding track 120 is a single track connected to one end of the straight track 110 in its extending direction. The winding track 120 is spiral-shaped to form multiple coils 120X, with adjacent coils 120X constraining a spiral track space X1. The door panel 20 is disposed between the two sets of guide rails 10, and both ends of the door panel 20 in the width direction are slidably connected to the two sets of guide rails 10 respectively. When the door panel 20 is on the winding track 120, both ends of the door panel 20 in the width direction are constrained within the track space X1. The drive assembly 30 is connected to the door panel 20. The drive assembly 30 can drive the door panel 20 to move along the straight track 110 and / or the winding track 120. When the drive assembly 30 drives the door panel 20 which is on the winding track 120, the door panel 20 moves along the direction of the track space X1.

[0022] The straight track 110 is used to guide the door panel 20 to move up and down along the extension direction of the straight track 110. The winding track 120 is used to guide the door panel 20 to bend as it moves from the straight track 110 into the winding track 120, so that the door panel 20 can be smoothly stored in the winding track 120.

[0023] The space between the two straight tracks 110 can be called the doorway X2. When the door panel 20 is on the straight track 110 and covers the doorway X2 (e.g.) Figure 1 As shown), the roller door device 1 is in the closed state. When the door panel 20 is in the winding track 120 and stored in the receiving frame 6060 (as shown), Figure 2 As shown), the roller door device 1 is in the open state.

[0024] During the transition from the closed to the open state of the roller door device 1, the door panel 20 gradually rises along the straight track 110 and enters the winding track 120. The door panel 20 is guided and bent by the winding track 120 until all or most of the door panel 20 is rolled up and supported on the winding track 120. During this process, the door panel 20 gradually rolls up, causing the door opening X2 to gradually increase in size. During the transition from the open to the closed state of the roller door device 1, the door panel 20 gradually exits from the winding track 120 and enters the straight track 110, and gradually descends along the straight track 110. During this process, the door panel 20 gradually unfolds, causing the door opening X2 to gradually decrease in size.

[0025] Since the winding track 120 is spiral-shaped to form multiple coils 120X, two adjacent coils 120X together constrain the spiral track space X1. When the door panel 20 is in the winding track 120, both ends of the door panel 20 in the width direction will be constrained in the track space X1. Under the drive of the drive component 30, the door panel 20 moves along the direction of the track space X1.

[0026] In related technologies, the rolling door device includes two sets of guide rails set at both ends in the width direction of the door panel. Each set of guide rails includes one straight rail and two rolling rails. The two rolling rails are fitted together to jointly constrain the movement path of the door panel. The form of two rolling rails being fitted together is called a double-rail structure. The total guide rail spacing of the double-rail structure is relatively large, which results in an increase in its space occupation.

[0027] In this application, the winding track 120 used is a single track. A single track means that each set of guide rails 10 has only one winding track 120. One winding track 120 is wound to form multiple spiral coils 120X. Two adjacent coils 120X together constrain and form a spiral track space X1. When the drive assembly 30 drives the door panel 20 located on the winding track 120, the track space X1 can constrain both ends of the door panel 20 in the width direction, allowing the door panel 20 to move along the direction of the track space X1. It is understood that compared to a double track structure, the single-track structure has a smaller overall volume of the winding track 120, thus reducing the space occupied and consequently reducing the top installation space required for the rolling door device 1, while increasing the height of the door opening X2.

[0028] Please refer to Figures 1 to 2 In one embodiment, the roller door device 1 further includes a receiving frame 60 and two uprights 50. The receiving frame 60 is located at the far end of the roller door device 1, and the winding track 120 is located inside the receiving frame 60. The two uprights 50 are respectively located on both sides of the door panel 20 in the width direction, and the straight track 110 is located inside the uprights 50. That is, the receiving frame 60 is located above the door opening X2, and the two uprights 50 are respectively located on both sides of the door opening X2. It can be understood that placing the winding track 120 inside the receiving frame 60 and the straight track 110 inside the uprights 50 can avoid external interference with the rising or falling process of the door panel 20, and can also improve the overall aesthetics of the roller door device 1.

[0029] Please refer to Figure 5 In one embodiment, the door panel 20 includes a panel body 210 and a plurality of rollers 220 disposed at both ends of the panel body 210 in the width direction. The rollers 220 are rotatably connected to the panel body 210, that is, the rollers 220 can rotate relative to the panel body 210. When the drive assembly 30 drives the door panel 20, the rollers 220 roll on the guide rail 10 so that the panel body 210 gradually rolls up or gradually unfolds.

[0030] When the door panel 20 is in the winding track 120, the roller 220 is constrained between two adjacent rings 120X and can move along the direction of the track space X1 under the drive of the drive assembly 30, so that the panel 210 presents a corresponding spiral shape to be housed in the winding track 120.

[0031] It should be noted that the number of rollers 220 at each end of the width direction of the plate 210 can be the same or different, and the number of rollers 220 at each end can be, but is not limited to, 2, 3, 5, 6, 7, 8, 10, 13, 15, 18, etc. The rollers 220 can be spherical or cylindrical, and are not limited here. The cross-sections of both the straight track 110 and the winding track 120 can be approximately C-shaped to form a C-shaped space. This C-shaped space can restrict the degrees of freedom of the rollers 220 to ensure that the rollers 220 roll along the straight track 110 and the winding track 120.

[0032] In this embodiment, rollers 220 are provided at both ends of the plate 210. By cooperating with the guide rail 10, the movement resistance of the door panel 20 can be reduced, thereby smoothly and quickly guiding the body to roll or unfold.

[0033] Please refer to Figure 5 The panel 210 includes at least two sequentially movably connected single plates 211, with the roller 220 rotatably connected to the single plates 211. The number of single plates 211 can be 2, 3, 7, 10, 13, 18, 20, or any other value greater than 2. When the door panel 20 is located on the straight track 110, the arrangement direction of at least two single plates 211 is the extension direction of the straight track 110. When the door panel 20 is located on the winding track 120, a certain angle is formed between two adjacent single plates 211, thereby adapting to the bending shape of the winding track 120. The connection method between two adjacent single plates 211 can be, but is not limited to, a rotatable connection. When the door panel 20 is located on the winding track 120, the two adjacent single plates 211 adapt to the bending shape of the winding track 120 through relative rotation.

[0034] Please refer to Figure 5Optionally, the width L3 of the single panel 211 can be 50mm to 200mm. The specific width L3 of the single panel 211 can be 50mm, 55mm, 60mm, 62mm, 68mm, 70mm, 73mm, 80mm, 88mm, 90mm, 95mm, 100mm, 108mm, 110mm, 120mm, 123mm, 135mm, 155mm, 168mm, 190mm, 200mm, etc. Setting the width of the single panel 211 within the range of 50mm to 200mm can effectively reduce the bending radius of the door panel 20, thereby effectively reducing the curvature radius of the winding track 120, which further reduces the space occupied by the winding track 120. In other embodiments, the width of the single panel 211 can also be selected as other values ​​less than 50mm or greater than 200mm.

[0035] Please refer to Figures 6 to 7 In one embodiment, the winding track 120 includes a first bend 121, a main body 122, and a second bend 123. The main body 122, the first bend 121, and the second bend 123 are all spiral-shaped. The main body 122, the first bend 121, and the second bend 123 of two adjacent coils 120X together constrain the spiral track space X1.

[0036] The first bend 121 and the second bend 123 are arranged opposite to each other and are both bent and connected to the two sides of the main body 122. That is, the winding track 120 can be roughly regarded as C-shaped to form a C-shaped space. The first bend 121 and the main body 122 can be perpendicular or substantially perpendicular to each other, and similarly, the second bend 123 and the main body 122 can be perpendicular or substantially perpendicular to each other. The first bend 121 and the second bend 123 are used to cooperate to confine the roller 220 in the track space X1 in a preset direction. The preset direction is the relative direction of the first bend 121 and the second bend 123.

[0037] It is understandable that during the rolling process of the roller 220 on the winding track 120, its rolling path may not always be on the same plane due to certain factors (such as the door panel 20 being subjected to a horizontal external force). In this case, the roller 220 may detach from the winding track 120, resulting in damage or even the risk of falling. In this embodiment, a first bending portion 121 and a second bending portion 123 are respectively provided on both sides of the main body 122. When the roller 220 on the door panel 20 rolls on the winding track 120, the first bending portion 121 and the second bending portion 123 can constrain the roller 220 in a preset direction, thereby preventing the roller 220 from detaching from the winding track 120 and ensuring that the roller 220 is always in the track space X1.

[0038] Optionally, the distance L1 between the first bend 121 and the second bend 123 is 15mm to 35mm. The value of L1 can be, but is not limited to, 15mm, 16mm, 17mm, 18mm, 20mm, 22mm, 23mm, 26mm, 27mm, 30mm, 32mm, 35mm, etc. In other embodiments, the distance L1 between the first bend 121 and the second bend 123 can also be selected as other values ​​less than 15mm or greater than 35mm.

[0039] Optionally, the distance L2 from the end of the first bent portion 121 away from the main body 122 to the main body 122 is 30mm to 50mm, that is, L2 is the height of the first bent portion 121 protruding from the main body 122. The value of L2 can be 30mm, 31mm, 33mm, 35mm, 38mm, 40mm, 40.5mm, 41mm, 43mm, 46mm, 49mm, 50mm, etc. In other embodiments, the distance L2 from the end of the first bent portion 121 away from the main body 122 to the main body 122 can also be selected as other values ​​less than 30mm or greater than 50mm. It should be noted that the height of the first bent portion 121 protruding from the main body 122 and the height of the second bent portion 123 protruding from the main body 122 can be the same or different.

[0040] In one embodiment, the distance between the main body portions 122 of two adjacent rings 120X is greater than the diameter of the roller 220. For example, the distance between the main body portions 122 of two adjacent rings 120X is 3mm, 3.5mm, 5mm, 5.1mm, 6mm, 6.2mm, 7mm, 8.5mm, 10mm, or any other arbitrary value greater than the diameter of the roller 220. In this embodiment, the distance between the main body portions 122 of two adjacent rings 120X is set to be greater than the diameter of the roller 220. This ensures that when the roller 220 moves in the winding track 120, it only contacts the main body portion 122 of one of the two rings 120X, that is, the roller 220 contacts the winding track 120 on one side. This avoids the phenomenon of the roller 220 simultaneously contacting the main body portions 122 of two adjacent rings 120X, which could cause jamming.

[0041] Optionally, the pitch of the winding track 120 is 25mm / turn to 90mm / turn. Specific pitch values ​​can be 25mm / turn, 29mm / turn, 30mm / turn, 34mm / turn, 40mm / turn, 43mm / turn, 46mm / turn, 50mm / turn, 55mm / turn, 60mm / turn, 66mm / turn, 70mm / turn, 78mm / turn, 80mm / turn, 85mm / turn, 90mm / turn, etc. Setting the pitch of the winding track 120 to the range of 25mm / turn to 90mm / turn reduces the overall volume of the winding track 120, thereby reducing the space occupied by the winding track 120. In other embodiments, the pitch of the winding track 120 can also be selected as other values ​​less than 25mm / turn or greater than 90mm / turn.

[0042] Optionally, the radius of curvature of the winding track 120 is less than or equal to 300 mm. Specific values ​​for this radius of curvature can be 300 mm, 295 mm, 286 mm, 275 mm, 270 mm, 269 mm, 261 mm, 256 mm, 250 mm, 243 mm, 241 mm, 236 mm, 230 mm, 221 mm, 216 mm, etc. Setting the pitch of the winding track 120 to less than or equal to 300 mm allows for a larger bending amplitude, thus reducing the overall volume of the winding track 120 and consequently reducing the space it occupies. In other embodiments, the radius of curvature of the winding track 120 can also be selected from other values ​​greater than 300 mm.

[0043] Please refer to the above as well. Figure 3 , Figure 4 and Figure 8 In one embodiment, the driving component 30 includes a driver 310 (see...) Figure 3 , Figure 4 ), drive shaft 320 (see) Figure 3 ) and two synchronous belts 330 (see Figure 4 , Figure 8 In this assembly, both the driver 310 and the drive shaft 320 are located at the far end of the rolling door device 1, with the driver 310 connected to the drive shaft 320. Two synchronous belts 330 are respectively located on both sides of the door panel 20 in the width direction. Both synchronous belts 330 are connected to the door panel 20 and are connected via the drive shaft 320. The driver 310 drives the drive shaft 320 to rotate, thereby causing the drive shaft 320 to drive the synchronous belts 330 to rotate, which in turn causes the synchronous belts 330 to drive the door panel 20 to move.

[0044] The driver 310 can be a motor, capable of outputting rotational motion to provide power for the door panel 20 to rise or fall. The driver 310 can be located inside or outside the receiving frame 60. The drive shaft 320 rotates under the drive of the driver 310, transmitting power to the synchronous belt 330. The synchronous belt 330, also called a transmission belt, primarily transmits power. The synchronous belt 330 can be located within the aforementioned column 50. The synchronous belt 330 has a ring-shaped structure, and its entire ring structure is parallel to the straight track 110. One end of the synchronous belt 330 is directly or indirectly connected to the drive shaft 320, and the other end is directly or indirectly connected to the bottom end of the door panel 20, transmitting power from the drive shaft 320 to the door panel 20, thereby causing the door panel 20 to rise or fall. The bottom end of the door panel 20 refers to the end of the door panel 20 closest to the ground when the roller door device 1 is in the closed state.

[0045] Optionally, the timing belt 330 is a steel wire core rubber-plastic composite belt.

[0046] Optionally, the coefficient of friction of the timing belt 330 is less than or equal to 0.1. The specific value of this coefficient of friction can be 0.1, 0.09, 0.08, 0.07, 0.06, 0.05, 0.04, or any other arbitrary value. In other embodiments, the coefficient of friction of the timing belt 330 can also be selected to be greater than 0.1.

[0047] Optionally, the Shore hardness of the timing belt 330 is 60°~80°. This Shore hardness can be 60°, 62°, 65°, 68°, 70°, 73°, 75°, 76°, 79°, 80°, etc. Preferably, the Shore hardness of the steel wire core rubber-plastic composite belt is 75°±2°. Of course, in other embodiments, the Shore hardness of the timing belt 330 can also be selected as other values ​​less than 60° or greater than 80°.

[0048] Optionally, the elastic modulus of the synchronous belt 330 is between 2 MPa and 10 MPa. Specific values ​​for the elastic modulus can be 2 MPa, 3 MPa, 3.5 MPa, 4 MPa, 4.6 MPa, 5 MPa, 5.3 MPa, 6.2 MPa, 7 MPa, 7.9 MPa, 8 MPa, 8.8 MPa, 9.6 MPa, 10 MPa, etc. Setting the elastic modulus of the synchronous belt 330 in the range of 2 MPa to 10 MPa is much smaller than the elastic modulus range of commonly used metallic materials. For example, the elastic modulus of steel is 190-210. Therefore, the synchronous belt 330 with a smaller elastic modulus can absorb vibration energy compared to commonly used metals, thereby reducing transmission noise. In other embodiments, the elastic modulus of the synchronous belt 330 can also be selected as other values, either less than 2 MPa or greater than 10 MPa.

[0049] For example, the synchronous belt 330 is a steel wire core rubber-plastic composite belt. The Shore hardness of the steel wire core rubber-plastic composite belt is 75°±2°, the coefficient of friction is ≤0.08, and its elastic modulus is 3.5MPa.

[0050] Please refer to Figure 8 In one embodiment, the drive assembly 30 further includes two sets of synchronous pulleys, which are respectively disposed on both sides of the door panel 20 in the width direction. Each set of synchronous pulleys includes a driving pulley 340 and a driven pulley 350, wherein the driving pulley 340 is disposed at the far end of the rolling door device 1 and is sleeved on the drive shaft 320. That is, the two driving pulleys 340 are respectively sleeved at both ends of the drive shaft 320 and rotate synchronously with the drive shaft 320. The driven pulley 350 is rotatably disposed at the near end of the rolling door device 1. One end of the synchronous belt 330 is sleeved on the outer periphery of the driving pulley 340 and the other end is sleeved on the outer periphery of the driven pulley 350. The drive driver 310 drives the synchronous belt 330 to rotate through the driving pulley 340 and the driven pulley 350. The driving pulley 340 can be disposed inside the receiving frame 60 or inside the door post, and the driven pulley 350 can be disposed inside the door post to avoid external interference.

[0051] When the driver 310 outputs power, the drive shaft 320 drives the drive wheel 340 to rotate, the drive wheel 340 drives the timing belt 330 to move, the timing belt 330 in turn drives the driven wheel 350 to rotate, and at the same time, the timing belt 330 will also drive the door panel 20 to rise or fall.

[0052] In related technologies, chain drive is used between the drive unit and the door panel, with a metal chain for the timing belt and metal sprockets for the driving and driven pulleys. However, the meshing of the chain and sprockets generates high-frequency mechanical noise, and chain stretching and deformation can also cause abnormal operating noises. Furthermore, lubrication and maintenance are required every quarter, which causes inconvenience to users.

[0053] In this application, the drive unit 310 and the door panel 20 are powered by a synchronous belt 330, i.e., a belt drive scheme is adopted. Compared with chain drive, belt drive has less noise and a longer maintenance cycle.

[0054] Please refer to Figure 3In one embodiment, the drive assembly 30 further includes at least one torsion spring 360, which is a mechanical spring that uses torsional force to store and release energy. The torsion spring 360 is sleeved on the drive shaft 320, with one end of the torsion spring 360 fixed to the drive shaft 320 in the longitudinal direction and the other end fixed relative to the guide rail 10. When the roller door device 1 is in the closed state, the torsion spring 360 is in a torsional state and applies a first torque to the drive shaft 320. The door panel 20 applies a second torque to the drive shaft 320 in sequence through the synchronous belt 330 and the drive wheel 340. The first torque is greater than or equal to the second torque, and the directions of the first torque and the second torque are opposite.

[0055] Specifically, the torsion spring 360 has a first fixed end and a second fixed end that are opposite to each other in the length direction. The first fixed end is directly or indirectly fixed to the drive shaft 320, and its fixing type can be a detachable connection or a non-detachable connection. The second fixed end can be directly or indirectly fixed to the column 50 or the receiving frame 60 (i.e., the second fixed end is fixed relative to the guide rail 10), and its fixing type can be a detachable connection or a non-detachable connection. With the above configuration, when the driver 310 drives the drive shaft 320 to rotate, the first fixed end will rotate with the drive shaft 320, while the second fixed end will remain stationary. That is, the first fixed end will rotate relative to the second fixed end. At this time, the torsion spring 360 twists, and the twisted torsion spring 360 applies torque to the drive shaft 320.

[0056] It is understandable that since the door panel 20 is connected to the synchronous belt 330, which is sleeved on the outer periphery of the drive wheel 340, and the drive wheel 340 is mounted on the drive shaft 320, when the rolling door device 1 is in the closed state, the door panel 20 with a certain weight will inevitably generate a certain torque on the drive shaft 320 (i.e. the second torque mentioned above).

[0057] In this embodiment, when the roller door device 1 is in the closed state, the torsion spring 360 applies a first torque to the drive shaft 320 (i.e., the torsion spring 360 is in a torsional state). This first torque is greater than or equal to a second torque. Since the first torque and the second torque are in opposite directions, the second torque is canceled out by the first torque, thereby allowing the door panel 20 to remain in its current state. Furthermore, by using the torsion spring 360 to cancel out the torque from the door panel 20, the load on the drive unit 310 can be reduced, thereby extending the service life of the drive unit 310. In addition, by placing the torsion spring 360 on the drive shaft 320, the space occupied by the column 50 can be avoided, thus preventing a reduction in the width of the door opening X2.

[0058] In one embodiment, when the roller door device 1 changes from a closed state to an open state, the torsion spring 360 changes from a torsional state to a non-torsional state. When the roller door device 1 changes from an open state to a closed state, the torsion spring 360 changes from a non-torsional state to a torsional state.

[0059] During the process of the roller door device 1 changing from the closed state to the open state, the driver 310 drives the transmission shaft 320 to rotate forward. The torsion spring 360, which is in a torsional state, rotates forward and gradually releases energy. The torsion spring 360, which releases energy, assists the transmission shaft 320 to rotate forward. The rotating transmission shaft 320 drives the door panel 20 to rise through the synchronous belt 330 until most or all of the door panel 20 enters the winding track 120 and forms a winding shape. The opening action is thus completed. At this time, the energy of the torsion spring 360 is completely released and it is in a non-torsional state.

[0060] During the process of the roller door device 1 changing from the open state to the closed state, the driver 310 drives the transmission shaft 320 to reverse. The torsion spring 360, which is in a non-torsional state, begins to twist in the opposite direction under the drive of the transmission shaft 320 and gradually accumulates energy. The torsion spring 360, which has accumulated energy, will hinder the transmission shaft 320 from reversing. The reversed transmission shaft 320 drives the door panel 20 to descend through the synchronous belt 330 until the door panel 20 descends to the lowest position, and the closing action is completed. At this time, the energy of the torsion spring 360 is accumulated to the maximum extent and it is in the maximum torsional state.

[0061] In this embodiment, during the transition of the roller door device 1 from the closed state to the open state, the energy-releasing torsion spring 360 assists the drive shaft 320 in forward rotation, which reduces the load on the drive driver 310 and extends its service life. During the transition of the roller door device 1 from the open state to the closed state, the energy-accumulating torsion spring 360 will prevent the drive shaft 320 from reversing. At this time, the torsion spring 360 can play a buffering role to ensure that the descent of the door panel 20 is more smooth. Even if the drive driver 310 is de-energized, the door panel 20 can descend slowly rather than rapidly under the resistance of the torsion spring 360.

[0062] Optionally, a safety protection device (such as a photoelectric encoder) can be installed at the bottom of the door panel 20 or at the column 50. During the descent of the door panel 20, if the safety protection device detects an object in the door opening X2 below the door panel 20, the safety protection device will directly or indirectly feed back to the driver 310. After receiving the feedback signal, the driver 310 will stop outputting power, and the door panel 20 will stop descending. This will prevent the door panel 20 from hitting the object in the door opening X2.

[0063] In the rolling door device 1 described in any of the above embodiments, the winding track 120 can be a spiral track (such as...). Figure 6 As shown), it can also be an elliptical orbit (such as...). Figure 9(As shown). Optionally, the winding track is an Archimedes spiral track. The Archimedes spiral has a smoother curve, which makes it easier to guide the door panel 20 to move smoothly without getting stuck.

[0064] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, and such improvements and refinements are also considered to be within the protection scope of this application.

Claims

1. A rolling door device, characterized in that, The rolling door assembly includes: Two sets of guide rails are arranged opposite each other and spaced apart. Each set of guide rails includes a straight rail and a winding rail. The winding rail is a single rail and is connected to one end of the straight rail in the extension direction. The winding rail is spiral to form multiple loops. Two adjacent loops together constrain the spiral rail space. A door panel, wherein the door panel is disposed between two sets of guide rails, and both ends of the door panel in the width direction are slidably connected to the two sets of guide rails respectively; when the door panel is in the winding track, both ends of the door panel in the width direction are constrained in the track space; and A drive assembly is connected to the door panel and can drive the door panel to move along the straight track and / or the winding track. When the drive assembly drives the door panel on the winding track, the door panel moves along the direction of the track space.

2. The rolling door device as described in claim 1, characterized in that, The door panel includes a panel body and a plurality of rollers disposed at both ends of the panel body in the width direction. The rollers are rotatably connected to the panel body. When the door panel is in the winding track, the rollers are constrained between two adjacent rings and can move along the direction of the track space under the drive of the drive assembly.

3. The rolling door device as described in claim 2, characterized in that, The panel includes at least two single panels that are movably connected in sequence. When the door panel is located on the straight track, the arrangement direction of the at least two single panels is the extension direction of the straight track. When the door panel is located on the winding track, a certain angle is formed between two adjacent single panels to adapt to the bending shape of the winding track.

4. The rolling door device as described in claim 2, characterized in that, The winding track includes a first bend, a main body, and a second bend. The main body, the first bend, and the second bend are all spiral-shaped. The main bodies, the first bend, and the second bend of two adjacent rings together constrain the spiral track space. The first bending portion and the second bending portion are arranged opposite to each other and are both bent and connected to the two sides of the main body. The first bending portion and the second bending portion are used to cooperate to confine the roller in the track space in a preset direction, wherein the preset direction is the relative direction of the first bending portion and the second bending portion.

5. The rolling door device as described in claim 4, characterized in that, The distance between the main body portions of two adjacent rings is greater than the diameter of the roller.

6. The rolling door device as claimed in claim 1, characterized in that, The drive assembly includes a driver, a drive shaft, and two synchronous belts. The driver and the drive shaft are both located at the far end of the rolling door device, and the driver is connected to the drive shaft. The two synchronous belts are respectively located on both sides of the door panel in the width direction, and both synchronous belts are connected to the door panel. The two synchronous belts are connected through the drive shaft. The driver is used to drive the drive shaft to rotate, so that the drive shaft drives the synchronous belts to rotate, thereby causing the synchronous belts to drive the door panel to move.

7. The rolling door device as described in claim 6, characterized in that, The drive assembly also includes two sets of synchronous pulleys, which are respectively arranged on both sides of the door panel in the width direction. Each set of synchronous pulleys includes a driving pulley and a driven pulley. The driving pulley is located at the far end of the rolling door device and is sleeved on the drive shaft. The driven pulley is rotatably located at the near end of the rolling door device. One end of the synchronous belt is sleeved on the outer periphery of the driving pulley and the other end is sleeved on the outer periphery of the driven pulley. The drive unit drives the synchronous belt to rotate through the driving pulley and the driven pulley.

8. The rolling door device as described in claim 7, characterized in that, The drive assembly also includes a torsion spring, which is sleeved on the drive shaft. One end of the torsion spring is fixed to the drive shaft in the length direction, and the other end is fixed relative to the guide rail. When the rolling door device is in the closed state, the torsion spring is in a torsional state and applies a first torque to the drive shaft. The door panel applies a second torque to the drive shaft in sequence through the synchronous belt and the drive wheel. The first torque is greater than or equal to the second torque, and the first torque and the second torque are in opposite directions.

9. The rolling door device as described in claim 8, characterized in that, When the roller door device changes from the closed state to the open state, the torsion spring changes from the torsional state to the non-torsional state; when the roller door device changes from the open state to the closed state, the torsion spring changes from the non-torsional state to the torsional state.

10. The rolling door device according to any one of claims 1 to 9, characterized in that, The rolling door device also includes a receiving frame and two uprights. The receiving frame is located at the far end of the rolling door device, the rolling track is located inside the receiving frame, the two uprights are respectively located on both sides of the door panel in the width direction, and the straight track is located inside the uprights.

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