A theft-proof roller shutter door

Abstract

The utility model provides a kind of theft-proof roller shutter door of preventing warping, it is related to roller shutter door technical field, including collection box, the lower surface both ends of collection box are respectively penetrated and installed with guide rail, the inside of collection box is installed with auxiliary mechanism, door curtain is installed between the auxiliary mechanism and guide rail, the auxiliary mechanism includes winding shaft, the inside upper end of collection box is movably installed in winding shaft, door curtain is wound and installed in the outer side of the stem of winding shaft, the lower end of door curtain is engaged and installed with guide block, door curtain and guide block are engaged and installed in the inside of guide rail.In the utility model, by setting guide block driven by screw rod, and with the lower end of door curtain rigid connection, in the process of door curtain lifting, it is implemented to its mandatory centering and guiding, effectively restricts the movement track of door curtain in guide rail, fundamentally eliminates the warping phenomenon caused by gap, wind force or deformation, ensures the stability and sealing of door curtain operation.

Description

Technical Field

[0001] This utility model relates to the field of roller shutter technology, and more specifically, to a burglarproof roller shutter door that prevents the edges from warping. Background Technology

[0002] A roller shutter door is a door with multiple articulated door panels linked together, which rotate up and down around a central roller within a fixed track. Roller shutter doors are commonly used in shops. For example, the roller shutter door proposed in application number "CN202322504524.1" includes a connecting seat, a fixing plate fixedly installed at the lower rear end of the connecting seat, connecting columns fixedly installed at the lower left and lower right ends of the connecting seat, and the roller shutter door body slidingly installed between the two connecting columns. A support column is fixedly installed at the lower left end of the connecting seat, and a support is fixedly installed at the lower middle end of the connecting seat.

[0003] However, the above technical solutions mainly address the issues of anti-pinch and remote control of roller shutters, but fail to effectively solve the problem of edge warping caused by gaps between the curtain and guide rail, wind force, or structural deformation during long-term use. When the curtain is raised or lowered, its edges are prone to coming off the guide rail or getting stuck, which not only affects the sealing and security, but also accelerates the wear and tear of the curtain and guide rail over time, reducing the overall service life. Therefore, we propose a burglarproof roller shutter door that prevents edge warping to solve the above problems. Utility Model Content

[0004] The main purpose of this utility model is to provide a burglarproof roller shutter door that prevents edge warping. It solves the problems of anti-pinch and remote control of roller shutter doors, but it does not effectively solve the problem of edge warping caused by gaps between the curtain and the guide rail, wind force or structural deformation during long-term use. When the curtain is raised or lowered, its edge is easy to come off the guide rail or get stuck, which not only affects the sealing and security, but also accelerates the wear of the curtain and the guide rail in the long run, reducing the overall service life.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An anti-theft roller shutter door with anti-warping edges includes a collection box. Guide rails are installed through both ends of the lower surface of the collection box. An auxiliary mechanism is installed inside the collection box. A door curtain is installed between the auxiliary mechanism and the guide rails. The auxiliary mechanism includes a winding shaft, which is movably installed inside the upper part of the collection box. The door curtain is wound around the outside of the shaft of the winding shaft. A guide block is engaged at the lower end of the door curtain. The door curtain and the guide block are engaged inside the guide rails. Lead screws are movably installed between the guide rails and the collection box. The shafts of the lead screws are threaded through the guide blocks. A first drive shaft and a second drive shaft are movably installed at the rear end of the collection box. The first drive shaft is connected to the winding shaft, and the second drive shaft is connected to the lead screws. A motor is installed at the lower rear side of the collection box. The output end of the motor is connected to both the first and second drive shafts.

[0007] Preferably, a second sprocket is installed at each end of the winding shaft, and a first sprocket is installed at each end of the first drive shaft.

[0008] Preferably, a chain is fitted between the first sprocket and the second sprocket.

[0009] Preferably, worm gears are installed at both ends of the shaft of the second drive shaft, and a worm wheel is installed on the outside of the shaft of the lead screw located inside the collection box, with the worm gears and worm wheel meshing together.

[0010] Preferably, a plurality of bearing seats are installed at the lower rear end of the inside of the collection box, and the shafts of the first drive shaft and the second drive shaft are respectively installed through the inside of the bearing seats. A second gear is installed on the outside of the shaft of the first drive shaft, and a first gear is installed on the outside of the shaft of the second drive shaft. The first gear and the second gear are meshed together.

[0011] Preferably, a third gear is installed at the output end of the motor, and the third gear is meshed with the second gear.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) In this utility model, by setting a guide block driven by a screw and rigidly connecting it to the lower end of the curtain, the curtain is forced to be centered and guided during the lifting and lowering process, which effectively constrains the movement trajectory of the curtain in the guide rail, fundamentally eliminating the curling phenomenon caused by gaps, wind or deformation, and ensuring the smoothness and sealing of the curtain operation.

[0014] (2) In this utility model, a single motor is used to drive the winding shaft and the lead screw to operate in coordination through a synchronous transmission system composed of gears, sprockets and worm gears. This achieves precise synchronization of the opening and closing of the curtain and the movement of the guide block. This mechanical synchronization is not only reliable in operation, but the worm gear mechanism also has a self-locking function, which can effectively prevent the curtain from moving due to external force when it is stationary, thus enhancing the overall anti-theft performance and security. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a security roller shutter door designed to prevent edge warping according to this utility model.

[0016] Figure 2 This is a front view structural diagram of an anti-theft roller shutter door that prevents edge warping according to the present invention;

[0017] Figure 3 This is a side view structural diagram of an anti-theft roller shutter door that prevents the edges from warping, according to the present invention.

[0018] Figure 4 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0019] Figure 5 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 2 Schematic diagram of the cross-sectional structure at point BB;

[0020] Figure 6 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 3 Schematic diagram of the cross-sectional structure at the CC section;

[0021] Figure 7 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 4 Enlarged structural diagram at point D;

[0022] Figure 8 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 4 Enlarged structural diagram at point E;

[0023] Figure 9 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 5 Enlarged structural diagram at point F;

[0024] Figure 10 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 6 Enlarged structural diagram at point G in the middle;

[0025] Figure 11 This utility model relates to a burglarproof roller shutter door designed to prevent edge warping. Figure 6Enlarged structural diagram at point H.

[0026] In the diagram: 1. Collection box; 2. Guide rail; 3. Door curtain; 4. Auxiliary mechanism; 401. Rewinding shaft; 402. First drive shaft; 403. First sprocket; 404. Second sprocket; 405. Chain; 406. Guide block; 407. Lead screw; 408. Second drive shaft; 409. Worm gear; 410. Worm wheel; 411. First gear; 412. Second gear; 413. Third gear; 414. Motor. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0028] like Figures 1 to 11 As shown in the figure, this utility model embodiment proposes an anti-theft roller shutter door to prevent edge warping, including a collection box 1. Guide rails 2 are respectively installed through both ends of the lower surface of the collection box 1. An auxiliary mechanism 4 is installed inside the collection box 1. A curtain 3 is installed between the auxiliary mechanism 4 and the guide rails 2. The auxiliary mechanism 4 includes a winding shaft 401, which is movably installed inside the upper part of the collection box 1. The curtain 3 is wound around the outside of the shaft of the winding shaft 401. A guide block 406 is engaged at the lower end of the curtain 3. The curtain 3 and the guide block 406 are engaged inside the guide rails 2. A lead screw 407 is movably installed between the guide rail 2 and the collection box 1. The body of the lead screw 407 is threadedly installed inside the guide block 406. A first drive shaft 402 and a second drive shaft 408 are movably installed at the rear end of the collection box 1. The first drive shaft 402 is connected to the winding shaft 401, and the second drive shaft 408 is connected to the lead screw 407. A motor 414 is installed at the lower rear end of the collection box 1. The output end of the motor 414 is connected to the first drive shaft 402 and the second drive shaft 408.

[0029] like Figures 4 to 11As shown, in another embodiment of this utility model, a second sprocket 404 is installed at both ends of the winding shaft 401, a first sprocket 403 is installed at both ends of the first drive shaft 402, a chain 405 is sleeved between the first sprocket 403 and the second sprocket 404, a worm gear 409 is installed at both ends of the shaft of the second drive shaft 408, a worm wheel 410 is installed on the outer side of the shaft of the lead screw 407 located inside the collection box 1, and the worm gear 409 and the worm wheel 410 are meshed together. Several bearing seats are installed at the lower rear end of the inside of the collection box 1, the shafts of the first drive shaft 402 and the second drive shaft 408 are respectively installed through the inside of the bearing seats, a second gear 412 is installed on the outer side of the shaft of the first drive shaft 402, a first gear 411 is installed on the outer side of the shaft of the second drive shaft 408, and the first gear 411 and the second gear 412 are meshed together. A third gear 413 is installed at the output end of the motor 414, and the third gear 413 and the second gear 412 are meshed together.

[0030] When motor 414 operates, the third gear 413 on its output end rotates accordingly, driving the second gear 412 meshing with it to rotate. Then, the first transmission shaft 402, which is coaxial with the second gear 412, begins to rotate. At the same time, the second gear 412 drives the first gear 411 meshing with it to rotate, thereby driving the second transmission shaft 408 to rotate synchronously and in the opposite direction. Thus, through the gear transmission system composed of the third gear 413, the second gear 412, and the first gear 411, a single motor 414 can simultaneously distribute power to the first transmission shaft 402 and the second transmission shaft 408, ensuring the unity of the power source and the synchronicity of the output. The structure is compact and the control is simple.

[0031] When the first drive shaft 402 rotates, the first sprockets 403 at both ends transmit power to the second sprockets 404 at both ends of the take-up shaft 401 through the chain 405, thereby driving the take-up shaft 401 to rotate forward or backward. Thus, the curtain 3 is rolled up or down by rotating the take-up shaft 401. The method of first sprockets 403, second sprockets 404, and chain 405 can reliably transmit torque, ensuring that the take-up shaft 401 can smoothly roll up and down the heavy curtain 3 and operate stably.

[0032] The rotation of the second drive shaft 408 drives the worm gears 409 at both ends to rotate. Each worm gear 409 drives the worm wheel 410 that meshes with it, thereby driving the lead screw 407 to rotate. Since the guide block 406 is engaged with the lead screw 407 through a thread, and the guide block 406 is locked with the lower end of the curtain 3 and constrained in the guide rail 2, the rotational motion of the lead screw 407 is converted into the precise linear motion of the guide block 406 along the guide rail 2. Thus, the meshing of the worm gear 409 and the worm wheel 410 has a self-locking characteristic, which can effectively prevent the guide block 406 and the curtain 3 from moving due to external forces such as wind or prying when they are stationary, thus enhancing the anti-theft security. At the same time, the transmission of the lead screw 407 converts the rotational motion into linear motion, which is precisely controlled.

[0033] Thus, through the aforementioned transmission system, the raising and lowering of the curtain 3 and the raising and lowering of the guide block 406 are strictly synchronized. When the curtain 3 is lowered, the guide block 406 moves downward synchronously under the drive of the screw 407, always providing rigid support and forced centering guidance for the lower end of the curtain 3. When the curtain 3 is rolled up, the guide block 406 moves upward synchronously back to the collection box 1. This design fundamentally solves the problem of edge warping caused by gaps between the curtain 3 and the guide rail 2, wind force, or structural deformation in traditional roller shutter doors. Then, the guide block 406 forcibly constrains the movement trajectory of the lower end of the curtain 3 through the screw 407, ensuring that it always runs smoothly within the guide rail 2, avoiding derailment and jamming, improving sealing performance and service life, and also enhancing overall reliability and safety.

[0034] The working principle of this type of anti-theft roller shutter door that prevents the edges from warping:

[0035] In operation, the output shaft of motor 414 first drives the third gear 413 on it to rotate. Then, the third gear 413 meshes with the second gear 412 on the first transmission shaft 402, transmitting power to the first transmission shaft 402. Simultaneously, the second gear 412 meshes with the first gear 411 on the second transmission shaft 408, thereby driving the second transmission shaft 408 to rotate synchronously in the opposite direction. Then, the rotation of the first transmission shaft 402 drives the second sprockets 404 at both ends of the winding shaft 401 through the first sprockets 403 and chain 405 at both ends, causing the winding shaft 401 to rotate, thus realizing the opening of the door. When the curtain 3 is rolled up or down, the rotation of the second drive shaft 408 drives the worm gears 409 at both ends to rotate. Each worm gear 409 drives the worm wheel 410 that meshes with it, which in turn drives the lead screw 407 to rotate. Since the guide block 406 is threaded to the lead screw 407 and is constrained within the guide rail 2, the rotational motion of the lead screw 407 is converted into the precise linear motion of the guide block 406 along the guide rail 2. Finally, when the curtain 3 descends, the guide block 406 descends synchronously, providing rigid support and forced centering for the lower end of the curtain 3. When the curtain 3 rises, the guide block 406 ascends synchronously and retracts into the collection box 1.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. Any obvious variations or modifications derived from the technical solutions of this utility model are still within the protection scope of this utility model.

Claims

1. A burglarproof roller shutter door for preventing edge warping, comprising a collection box (1), characterized in that: The lower surface of the collection box (1) is provided with guide rails (2) that pass through both ends. An auxiliary mechanism (4) is installed inside the collection box (1). A curtain (3) is installed between the auxiliary mechanism (4) and the guide rails (2). The auxiliary mechanism (4) includes a winding shaft (401), which is movably installed inside the upper part of the collection box (1). The curtain (3) is wound around the outside of the shaft of the winding shaft (401). A guide block (406) is engaged at the lower end of the curtain (3). The curtain (3) and the guide block (406) are engaged inside the guide rails (2). The guide rails (2) and the collection box (1) are connected. A lead screw (407) is movably installed between the two parts. The body of the lead screw (407) is threaded through and installed inside the guide block (406). A first drive shaft (402) and a second drive shaft (408) are movably installed at the rear end of the inside of the collection box (1). The first drive shaft (402) is connected to the winding shaft (401), and the second drive shaft (408) is connected to the lead screw (407). A motor (414) is installed at the lower end of the rear side of the inside of the collection box (1). The output end of the motor (414) is connected to the first drive shaft (402) and the second drive shaft (408).

2. The anti-theft roller shutter door for preventing edge warping according to claim 1, characterized in that: The two ends of the take-up shaft (401) are respectively equipped with second sprockets (404), and the two ends of the first drive shaft (402) are respectively equipped with first sprockets (403).

3. A burglarproof roller shutter door for preventing edge warping according to claim 2, characterized in that: A chain (405) is fitted between the first sprocket (403) and the second sprocket (404).

4. A burglarproof roller shutter door for preventing edge warping according to claim 1, characterized in that: The second drive shaft (408) has worm gears (409) installed at both ends of its shaft. The lead screw (407) is located inside the collection box (1) and has a worm wheel (410) installed on its outer side. The worm gears (409) and the worm wheel (410) are meshed together.

5. A burglarproof roller shutter door for preventing edge warping according to claim 1, characterized in that: The lower rear end of the collection box (1) is equipped with several bearing seats. The shafts of the first drive shaft (402) and the second drive shaft (408) are respectively installed inside the bearing seats. A second gear (412) is installed on the outside of the shaft of the first drive shaft (402), and a first gear (411) is installed on the outside of the shaft of the second drive shaft (408). The first gear (411) and the second gear (412) are meshed together.

6. A burglarproof roller shutter door for preventing edge warping according to claim 5, characterized in that: The output end of the motor (414) is equipped with a third gear (413), which meshes with the second gear (412).

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