A roller shutter door anti-falling device
By installing a stop bar and locking device at the bottom of the roller shutter door, the problem of the roller shutter door suddenly falling is solved, thus improving safety and ease of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HE NAN JIANG HE JI XIE YOU XIAN ZE REN GONG SI
- Filing Date
- 2025-05-29
- Publication Date
- 2026-06-02
AI Technical Summary
The problem of roller shutters suddenly falling when they are normally open, resulting in injuries and property damage.
Design a roller shutter door anti-fall device, including a pivot, a stop bar, and a fixing component. The stop bar is located at the bottom of the roller shutter door and is locked to prevent accidental falls. The handle and pivot are designed to ensure that the stop bar does not affect the use of the roller shutter door when it is opened or closed.
It effectively prevents roller shutter doors from falling suddenly, reduces injury to people and property, improves safety performance, and ensures that the stop bar is fixed in position during use, avoiding accidental collisions or displacement.
Smart Images
Figure CN224314895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of roller shutter door anti-fall devices, and in particular to an anti-fall device for roller shutter doors. Background Technology
[0002] Roller shutters, a common type of door in modern buildings, have a wide range of applications, covering shops, garages, factories, warehouses, and many other areas. In recent years, roller shutters have seen widespread use and popularity. However, safety accidents involving roller shutters are also gradually increasing. Sometimes, roller shutters, even when normally open, will suddenly fall and close, injuring people and objects below, causing personal injury and property damage. Although there are signs indicating not to walk under the door when it is opening and closing, accidents are still possible. Therefore, there is an urgent need for a roller shutter anti-fall device. Summary of the Invention
[0003] To address the problem of existing roller shutters suddenly falling and injuring people or objects, this utility model provides a roller shutter anti-fall device. Through the setting of fixing parts, pivots and stop bars, the stop bars are set below the roller shutter after it is rolled up, so as to prevent the roller shutter from suddenly falling completely and causing injury to people or property.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A roller shutter door anti-fall device includes a rotating shaft, a stop bar, and two fixing components. The two fixing components are symmetrically arranged at both ends of the rotating shaft and are rotatably connected to it. The rotating shaft is mounted on a wall via the two fixing components. A handle is fixed to the lower part of the rotating shaft. The stop bar has an "L"-shaped structure and is located on the upper part of the rotating shaft. One end of the stop bar is fixedly connected to the rotating shaft, and the other end is suspended. A locking device is fixed to the suspended end of the stop bar to prevent it from moving during use. The stop bar on the rotating shaft prevents the roller shutter door from suddenly falling due to accidental malfunction or external force, improving safety. Simultaneously, the rotating shaft and handle allow the stop bar to be stopped on the opposite side of the door when the roller shutter door is closed, without affecting the opening and closing of the roller shutter door. The locking device prevents accidental contact or other reasons from causing the stop bar to shift, thus affecting its usability.
[0006] Furthermore, the fixing component includes a fixing plate, a blocking plate, and a bushing. The blocking plate is fixed to the fixing plate, and the bushing is fixed on the blocking plate. The rotating shaft is inserted into the bushing.
[0007] Furthermore, a reinforcing rib is fixed at the connection between the blocking plate and the fixed plate to increase the structural strength between the blocking plate and the fixed plate, and a reinforcing rib is fixed at the connection between the stop rod and the rotating shaft to improve the structural strength between the stop rod and the rotating shaft and improve the overall impact resistance.
[0008] Furthermore, the cross-section of the suspended end of the stop bar is circular, triangular, hexagonal, or semi-circular. The shape of the cross-section of the suspended end of the stop bar increases its bending strength and improves structural reliability.
[0009] Furthermore, the locking device includes a buckle and a spring. The suspended end of the stop lever has a cavity structure, and the buckle has an L-shaped structure. One end of the buckle passes through the end face of the stop lever and is disposed within the cavity, while the other end is suspended. The buckle slides within the cavity. The spring is disposed between the cavity and the buckle, and the spring is fitted onto the buckle. A plug is fixed to the tail of the buckle, and one end of the spring is fixed to the plug, while the other end is fixedly connected to the inner end face of the cavity. The locking device prevents accidental contact or other risks that could cause the stop lever to shift and affect its performance during operation.
[0010] Furthermore, the stop bar includes a first rod body, a second rod body, and a connecting member. The first rod body is fixed on the rotating shaft, and the first rod body is engaged with the connecting member. The locking device is located at the end of the second rod body.
[0011] Furthermore, a connecting seat is provided between the adapter and the first rod. The connecting seat is a tubular structure, with one end fitted onto and fixed to the first rod, and the other end snapped into the adapter. When the stop bar is not in operation, rotating the connecting seat causes the second rod to rotate, making the second rod vertical. This effectively prevents the stop bar from protruding outwards and colliding with or snagging pedestrians or goods when they move in front of the stop bar or door, reducing the risk of accidents.
[0012] Furthermore, a support rod is fixed to the lower part of the connecting seat, and the support rod is connected to the rotating shaft. The support rod further enhances the strength of the structure and improves the impact resistance of the overall structure.
[0013] The beneficial effects of this utility model through the above technical solution are:
[0014] This invention, through the arrangement of fixing components, a rotating shaft, and a stop bar, ensures that after the roller shutter door is rolled up into the door housing, the stop bar is positioned below the roller shutter door to prevent sudden and complete collapse that could cause injury to people or property. Furthermore, this invention incorporates a locking device at the end of the stop bar to fix its position during operation, preventing accidental collisions or other reasons from causing displacement of the stop bar and affecting its usability. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the roller shutter door anti-fall device of this utility model.
[0016] Figure 2 This is a schematic diagram of the rotating shaft and stop bar of Embodiment 1 of the roller shutter door anti-fall device of this utility model.
[0017] Figure 3 This is a schematic diagram of the fixing component structure of Embodiment 1 of the anti-fall device for roller shutter doors according to this utility model.
[0018] Figure 4 This is a schematic diagram of the locking device of Embodiment 1 of the roller shutter door anti-fall device of this utility model.
[0019] Figure 5 This is a schematic diagram of the installation structure of Embodiment 1 of the roller shutter door anti-fall device of this utility model.
[0020] Figure 6 This utility model relates to a roller shutter door anti-fall device. Figure 5 A bottom view.
[0021] Figure 7 This is a schematic diagram of the rotating shaft and stop bar of Embodiment 2 of the anti-fall device for roller shutter doors according to this utility model.
[0022] Figure 8 This is a schematic diagram of the connection structure of the rod body, connecting seat and adapter of Embodiment 2 of the anti-fall device for roller shutter doors of this utility model.
[0023] Figure 9 This is a schematic diagram of the connecting seat of Embodiment 2 of the anti-fall device for roller shutter doors according to this utility model.
[0024] The attached diagram is labeled as follows: 1. Rotating shaft, 2. Stop bar, 3. Handle, 4. Reinforcing rib II, 5. Fixing plate, 6. Blocking plate, 7. Bushing, 8. Reinforcing rib I, 9. Wall, 10. Roller shutter door cover, 11. Roller shutter door, 12. Roller shutter door slide rail, 13. Buckle, 15. Rod I, 16. Connecting seat, 161. Slide groove, 17. Adapter, 171. Fixing block, 18. Rod II, 19. Support rod, 21. Spring, 22. Plug. Detailed Implementation
[0025] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings:
[0026] Example 1:
[0027] like Figures 1-6 As shown, a roller shutter door anti-fall device includes a rotating shaft 1, a stop bar 2, and two fixing components. The two fixing components are symmetrically arranged at both ends of the rotating shaft 1 and are rotatably connected to the rotating shaft 1. A handle 3 is fixed to the lower part of the rotating shaft 1. The stop bar 2 has an "L"-shaped structure and is located on the upper part of the rotating shaft 1. One end of the stop bar 2 is fixedly connected to the rotating shaft 1, and the other end is suspended in the air. The length of the suspended end of the stop bar 2 is greater than the distance between the roller shutter door 11 slide rail and the edge of the wall 9.
[0028] To improve the structural strength of the stop bar 2 in resisting impact, the cross-section of the suspended end of the stop bar 2 is circular, triangular, hexagonal or semi-circular. In this embodiment, the cross-section of the stop bar 2 is circular.
[0029] The fixing components include a fixing plate 5, a blocking plate 6, and a bushing 7. The fixing plate 5 is fixed to the wall 9 on which the roller shutter door 11 is installed. The blocking plate 6 is fixed to the fixing plate 5. The bushing 7 is fixed to the upper part of the blocking plate 6. The rotating shaft 1 is inserted into the bushing 7.
[0030] To improve the overall structural strength of the device, a reinforcing rib 8 is fixed at the connection between the blocking plate 6 and the fixing plate 5, and a reinforcing rib 4 is fixed at the connection between the stop bar 2 and the rotating shaft 1.
[0031] To prevent the stop lever 2 from shifting position due to accidental contact or other reasons during operation, thus affecting its performance, a locking device is provided at the end of the stop lever 2. This locking device includes a buckle 13 and a spring 21. The suspended end of the stop lever 2 has a cavity structure. The buckle 13 has an "L"-shaped structure, with one end passing through the end face of the stop lever 2 and positioned within the cavity, while the other end remains suspended. The buckle 13 slides within the cavity. The spring 21 is positioned between the cavity and the buckle 13, fitting snugly onto the buckle 13. A plug 22 is fixed to the tail of the buckle 13, with one end of the spring 21 fixed to the plug 22 and the other end fixedly connected to the inner end face of the cavity. The buckle 13 and spring 21 of the locking device extend out of the cavity of the stop lever 2, allowing the stop lever 2 to be extended to accommodate the thickness of the wall.
[0032] During installation, anti-fall devices are installed on both sides of the wall 9 on the same side as the roller shutter door 11. Two fixing members are symmetrically arranged on the wall 9, one above the other. The distance between the fixing plate 5 and the slide rail of the roller shutter door 11 is less than the distance between the corner of the stop bar 2 and the pivot 1, so that the suspended end of the stop bar 2 can extend into the lower part of the roller shutter door 11 when in operation. The distance between the fixing plate 5 at the bottom and the ground is 1.5m to 2m, which is 1.5m in this embodiment. The fixing plate 5 is fixed to the wall 9 with expansion screws. The two ends of the pivot 1 are inserted into the bushings 7 of the two fixing members 14. When not in use, the stop bar 2 is located on the side of the wall 9. When in use, after the roller shutter door 11 is rolled up into the roller shutter door cover 10, the handle 3 is turned so that the suspended end of the stop bar 2 extends into the lower part of the roller shutter door 11. At this point, pulling the latch 13 causes it to move, which in turn causes the spring 21 to contract, locking the suspended end of the latch 13 onto the other side of the wall 9, thus securing the stop bar 2. Specifically... Figure 5 and Figure 6As shown, the stop bar 2 is designed to prevent it from moving due to accidental contact or other reasons during use, thus affecting its usability. When the roller shutter door 11 suddenly falls, the stop bars 2 located on both sides of the lower part of the roller shutter door 11 can lock the bottom crossbeam of the roller shutter door 11, preventing the roller shutter door 11 from closing completely. At the same time, they can partially absorb the kinetic energy of the roller shutter door 11 falling, reducing the risk of injury to people or property below the roller shutter door 11.
[0033] Example 2:
[0034] Example 2 is basically the same in structure as Example 1, and the similarities will not be repeated. The difference is that, for example... Figures 7-9 As shown, the stop bar 2 includes a first rod 15, a second rod 18, and a connector 17. The first rod 15 is fixed on the rotating shaft 1. The connector 17 is an arc-shaped rod. In this embodiment, the arc angle of the connector 17 is 90°. The first rod 15 and the connector 17 are engaged. Specifically, a connecting seat 16 is fixed to the end of the first rod 15. The connecting seat 16 is a tubular structure. An "L"-shaped groove 161 is opened on the inner side wall of the connecting seat 16. The groove 161 penetrates the side wall of the connecting seat 16. A fixing block 171 that cooperates with the groove 161 is fixed to the head of the connector 17. The fixing block 171 is disposed in the groove 161 and slides in the groove 161. When the stop bar 2 is in the working state, the fixing block 171 is located at the lower part of the adapter 17. At this time, the fixing block 171 abuts against the bottom end of the slide groove 161, restricting the rotation of the adapter 17. In this way, when the roller shutter door descends unexpectedly, it can prevent the impact force generated by the descent from causing the adapter 171 to rotate and thus causing the adapter 17 to fail. When the stop bar 2 is not working, the fixing block 171 can be slid in the slide groove 161 by manually rotating the adapter 17. After the fixing block 171 slides to the highest point in the slide groove 161, it slides into the transverse groove of the slide groove 161. At this time, the adapter 17 drives the second rod 18 to rotate, so that the second rod 18 is set vertically upward, effectively preventing the stop bar 2 from protruding outward laterally. This prevents the stop bar from colliding or getting caught with pedestrians or goods when they move in front of the door, reducing the occurrence of accidents. The adapter 17 is connected to the second rod 18, and the locking device is set at the end of the second rod 18. The fixing block 171 and the adapter 17 are connected by bolts. When installation is required, the head of the adapter rod 17 is placed in the connecting seat 16, the fixing block 171 is placed in the slide groove 161, and the fixing block 171 is connected to the adapter rod 17 by bolts.
[0035] In order to improve the connection strength between the rod body 15 and the adapter 17, a support rod 19 is fixedly connected to the lower part of the connecting seat 16, and the support rod 19 is fixedly connected to the rotating shaft 1.
[0036] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.
Claims
1. A roller shutter door anti-fall device, characterized in that, It includes a rotating shaft (1), a stop bar (2), and two fixing parts. The two fixing parts are symmetrically arranged at both ends of the rotating shaft (1). The fixing parts are rotatably connected to the rotating shaft (1). The rotating shaft (1) is installed on the wall through the two fixing parts. A handle (3) is fixed to the lower part of the rotating shaft (1). The stop bar (2) has an "L" shaped structure. The stop bar (2) is set on the upper part of the rotating shaft (1). One end of the stop bar (2) is fixedly connected to the rotating shaft (1), and the other end is suspended. The suspended end of the stop bar (2) is fixed with a locking device to prevent the stop bar (2) from moving when in use.
2. The roller shutter door anti-fall device according to claim 1, characterized in that, The fasteners include a fixing plate (5), a blocking plate (6) and a bushing (7). The blocking plate (6) is fixed on the fixing plate (5), and the bushing (7) is fixed on the blocking plate (6). The rotating shaft (1) is inserted into the bushing (7).
3. The roller shutter door anti-fall device according to claim 2, characterized in that, The connection between the blocking plate (6) and the fixing plate (5) is fixed with a reinforcing rib (8), and the connection between the stop bar (2) and the rotating shaft (1) is fixed with a reinforcing rib (4).
4. The roller shutter door anti-fall device according to claim 1, characterized in that, The cross-section of the suspended end of the stop bar (2) is circular, triangular, hexagonal or semi-circular.
5. A roller shutter door anti-fall device according to claim 1, characterized in that, The locking device includes a buckle (13) and a spring (21). The end of the stop bar (2) is a cavity structure. The buckle (13) is an L-shaped structure. One end of the buckle (13) passes through the end face of the stop bar (2) and is set in the cavity. The other end is suspended. The buckle (13) slides in the cavity. The spring (21) is set between the cavity and the buckle (13). The spring (21) is fitted on the buckle (13). The end of the buckle (13) is fixed with a plug (22). One end of the spring (21) is fixed to the plug (22) and the other end is fixedly connected to the end face of the cavity.
6. A roller shutter door anti-fall device according to claim 1, characterized in that, The stop bar (2) includes a first rod (15), a second rod (18) and a connector (17). The first rod (15) is fixed on the rotating shaft (1), and the first rod (15) is engaged with the connector (17). The locking device is located at the end of the second rod (18).
7. A roller shutter door anti-fall device according to claim 6, characterized in that, A connecting seat (16) is provided between the adapter (17) and the first rod (15). The connecting seat (16) is a tubular structure. One end of the connecting seat (16) is fitted onto the first rod (15) and fixed to the first rod (15), and the other end is snapped into the adapter (17).
8. A roller shutter door anti-fall device according to claim 7, characterized in that, The lower part of the connecting seat (16) is fixed with a support rod (19), and the support rod (19) is connected to the rotating shaft (1).