A connecting buckle for preventing a curtain piece of a rolling door from falling off
By combining connecting ropes, locking blocks, rotating handles, and threaded rods, the design achieves flexible linkage and mechanical locking of the curtain slats, solving the problem of curtain slats falling off during frequent raising and lowering, and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 漳州市大越机电科技有限公司
- Filing Date
- 2025-08-26
- Publication Date
- 2026-08-04
AI Technical Summary
Existing roller shutter slats are prone to falling off during frequent raising and lowering due to loose hook connections, reducing safety.
The design employs a combination of connecting rope, locking block, rotating handle, threaded rod, rotating block, limiting block, and hook collar. Through sliding and threaded transmission, it achieves flexible linkage and mechanical locking of the curtain slats, preventing the hook connection from loosening.
It effectively prevents the curtain slats from falling off during frequent raising and lowering of the door, thus improving the safety and stability of the roller shutter door.
Smart Images
Figure CN224592058U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-detachment connecting buckles, and in particular to an anti-detachment connecting buckle for roller shutter slats. Background Technology
[0002] The slats of a roller shutter door are one of the basic components that make up the main structure of the roller shutter door. Their main function is to form the main barrier of the roller shutter door, providing security or anti-theft functions.
[0003] However, most existing roller shutter slats on the market use a direct interlocking mechanism between hooks and loops. When the door is frequently raised and lowered, the slats will continuously swing and rub against each other, which can easily cause the hooks to loosen, resulting in the slats falling off as a whole, thus reducing the safety of the roller shutter slats.
[0004] Therefore, those skilled in the art have provided a roller shutter slat anti-fall-off connecting buckle to solve the problems mentioned in the background art. Utility Model Content
[0005] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a roller shutter slat anti-fall-off connection buckle. Through the coordinated use of the connecting rope, the buckle block, the handle, the threaded rod, the rotating block, the limiting block, the fixing block and the second hook collar, the hook connection is prevented from loosening and causing the slat to fall off completely during the frequent raising and lowering of the door.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A roller shutter slat anti-fall-off connecting buckle includes a slat and an anti-fall-off component. A first hook collar is fixedly connected to the upper end of each adjacent side of the slat, and a second hook collar is fixedly connected to the lower end of each adjacent side of the slat. An anti-fall-off component is provided inside the slat. The anti-fall-off component includes a connecting rope. A locking block is fixedly connected to each connecting rope near the slat. A slot is formed in the middle of the outer walls on both sides of the slat away from its center. A groove is formed on the side of the slat near its center. A threaded rod is rotatably connected to the middle of the inner walls on both sides of the groove. A slot is formed in the middle of the outer wall of the front end of each locking block. A rotating block is threadedly connected to the middle of the outer wall of the threaded rod. Limit blocks are fixedly connected to both sides of the rotating block away from the center of the slat. The above technical solution, through the combined use of connecting rope, locking block, rotating handle, threaded rod, rotating block, limiting block, fixing block and No. 2 hook collar, avoids the hook connection from loosening and causing the curtain slats to fall off during frequent lifting and lowering of the door.
[0007] Furthermore, both the first hook collar and the second hook collar are slidably connected; With the above technical solution, when the roller shutter door is opened or closed, the adjacent curtain slats can achieve smooth relative displacement through the sliding cooperation of the hook collar.
[0008] Furthermore, the middle of the outer walls on both sides of the first hook collar and the second hook collar are fixedly connected to the connecting rope. The above technical solution uses connecting ropes to flexibly connect the hooks and loops of adjacent curtain slats, forming an integrated linkage structure.
[0009] Furthermore, the card slot is snapped into place with the card block; The above technical solution achieves initial fixation between the connecting rope and the curtain slat through the cooperation of the locking block and the locking slot, preventing the connecting rope from shifting or coming off during operation.
[0010] Furthermore, a rotating handle is fixedly connected to the outer wall of the threaded rod near the center of the curtain slat; The above technical solution allows the threaded rod to be driven to rotate synchronously by manually rotating the handle. The threaded transmission principle drives the rotating block to move axially along the threaded rod, thereby controlling the extension or retraction of the limit block and the fixed block.
[0011] Furthermore, on the side of the limiting block away from the center of the curtain slat, each of the grooves and locking blocks penetrates into the slot and is fixedly connected to a fixing block, and the fixing blocks are all locked into the slot. With the above technical solution, when the rotating handle drives the threaded rod to rotate, the limiting block moves outward accordingly, pushing the fixing block at its end through the slot on the locking block to achieve mechanical locking.
[0012] This utility model has the following beneficial effects: 1. The present invention proposes a roller shutter slat anti-fall-off connecting buckle, which is fixed to the outer wall of the hook collar by the two ends of the connecting rope. The buckle is embedded in the buckle groove of the side wall of the slat to form an initial limit. At the same time, the rotating block is driven to move axially by the threaded rod rotatably set in the groove, which drives the limit block to pass into the slot of the buckle and pushes the fixing block to lock and fix it, thereby realizing the secondary locking of the buckle. This avoids the hook connection from loosening and the slat falling off the whole during the frequent raising and lowering of the door, thereby improving the safety of the roller shutter slat. Attached Figure Description
[0013] Figure 1 This is a cross-sectional view of a roller shutter slat anti-fall-off connecting buckle proposed in this utility model; Figure 2 This is a schematic diagram of the main structure of a roller shutter slat anti-fall-off connecting buckle proposed in this utility model from a first-view perspective. Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 Enlarged view of point B in the middle.
[0014] Explanation of reference numerals in the attached figures: 1. Curtain slats; 2. Hook ring #1; 3. Anti-fall component; 301. Connecting rope; 302. Slot; 303. Block; 304. Groove; 305. Rotating handle; 306. Threaded rod; 307. Rotating block; 308. Limiting block; 309. Fixing block; 310. Slot; 4. Hook ring #2. Detailed Implementation
[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0016] Reference Figure 1-3 This utility model provides a specific implementation method: A roller shutter slat anti-fall-off connecting buckle includes a slat 1 and an anti-fall-off component 3. A first hook collar 2 is fixedly connected to the upper end of each adjacent side of the slat 1, and a second hook collar 4 is fixedly connected to the lower end of each adjacent side of the slat 1. The anti-fall-off component 3 is installed inside the slat 1. The anti-fall-off component 3 includes a connecting rope 301. A locking block 303 is fixedly connected to the side of the connecting rope 301 closest to the slat 1. A locking groove 302 is provided in the middle of the outer walls on both sides of the slat 1 away from its center. A locking block 303 is provided on the side of the slat 1 closest to its center. The groove 304 has a threaded rod 306 rotatably connected to the middle of the inner wall on both sides. The front outer wall of the locking block 303 has a slot 310 in the middle. The outer wall of the threaded rod 306 has a rotating block 307 threadedly connected to the middle of the outer wall. The rotating block 307 has a limit block 308 fixedly connected to both sides away from the center of the curtain slat 1. Through the cooperation of the connecting rope, locking block, rotating handle, threaded rod, rotating block, limit block, fixed block and second hook collar, the hook connection is prevented from loosening and causing the curtain slat to fall off during the frequent lifting and lowering of the door.
[0017] Reference Figure 3-4Hook collar 2 and hook collar 4 are slidably connected. When the roller shutter door opens or closes, the adjacent curtain slats can achieve smooth relative displacement through the sliding cooperation of the hook collars. The middle of the outer walls on both sides of hook collar 2 and hook collar 4 are fixedly connected to connecting rope 301. The hook collars of adjacent curtain slats are flexibly connected in series through the connecting rope to form an integrated linkage structure. The slot 302 and the block 303 are engaged. The cooperation between the block and the slot achieves the initial fixation between the connecting rope and the curtain slats, preventing the connecting rope from shifting or coming off during operation. The outer wall of the threaded rod 306 is close to A handle 305 is fixedly connected to one side of the center of the curtain slat 1. By manually rotating the handle, the threaded rod can be driven to rotate synchronously. The threaded transmission principle drives the rotating block to move along the axial direction of the threaded rod, thereby controlling the extension or retraction of the limit block and the fixing block. The limit block 308 on the side away from the center of the curtain slat 1 passes through the groove 304 and the locking block 303 to the inside of the slot 310 and is fixedly connected to the fixing block 309. The fixing blocks 309 are all locked to the slot 310. When the handle is rotated to drive the threaded rod to rotate, the limit block moves outward and pushes the fixing block at its end through the slot on the locking block to achieve mechanical locking.
[0018] Working principle: First, when installing the roller shutter slats 1, two adjacent slats 1 are slidably connected by a first hook collar 2 at the upper end of one side and a second hook collar 4 at the lower end of the other side, achieving vertical overlap and flexible rotation between the slats 1, thus forming a complete door structure. Second, the two ends of the connecting rope 301 in the anti-fall-off component 3 are respectively fixed to the middle of the outer wall of the adjacent first hook collar 2 and second hook collar 4, forming a tension connection. The locking block 303 set on the connecting rope 301 is correspondingly embedded in the locking groove 302 on the side wall of the slat 1, initially achieving anti-fall-off limiting. To ensure that the locking block 303 will not accidentally fall off under vibration or external force, a groove 3 is provided near the center of the slat 1. Within 04, rotating the handle 305 drives the threaded rod 306 to rotate, causing the threaded rotating block 307 to move away from the center of the curtain slat 1 along the threaded rod 306. This pushes the limiting block 308 through the groove 304 and the slot 310 on the locking block 303, ultimately causing the fixing block 309 to be locked into the slot 310, firmly locking the locking block 303 in the slot 302 to prevent it from moving laterally or coming out. Finally, when disassembly or maintenance is required, rotating the handle 305 in the opposite direction causes the rotating block 307 to drive the limiting block 308 and the fixing block 309 out of the slot 310, releasing the locking block 303. The locking block 303 can then be easily removed, facilitating the separation and replacement of the curtain slat 1.
[0019] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.
[0020] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.
[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific 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 utility model should be included within the protection scope of the present utility model.
Claims
1. A roller shutter slat anti-fall-off connecting buckle, comprising a slat (1) and an anti-fall-off component (3), characterized in that: A first hook collar (2) is fixedly connected to the upper end of each adjacent side of the curtain slat (1), and a second hook collar (4) is fixedly connected to the lower end of each adjacent side of the curtain slat (1) on the other side. An anti-fall-off component (3) is provided inside the curtain slat (1). The anti-fall-off component (3) includes a connecting rope (301). A locking block (303) is fixedly connected to the side of the connecting rope (301) near the curtain slat (1). A locking groove is provided in the middle of the outer wall on both sides of the curtain slat (1) away from the center of the curtain slat (1). (302) A groove (304) is provided on one side of the curtain slat (1) near the center of the curtain slat (1). A threaded rod (306) is rotatably connected to the middle of the inner wall on both sides of the groove (304). A slot (310) is provided on the middle of one side of the outer wall of the front end of the locking block (303). A rotating block (307) is threadedly connected to the middle of the outer wall of the threaded rod (306). Limiting blocks (308) are fixedly connected to both sides of the rotating block (307) away from the center of the curtain slat (1).
2. The anti-fall-off connecting buckle for roller shutter slats according to claim 1, characterized in that: The first hook collar (2) and the second hook collar (4) are slidably connected.
3. The anti-fall-off connecting buckle for roller shutter slats according to claim 1, characterized in that: The middle of the outer walls on both sides of the No. 1 hook collar (2) and the No. 2 hook collar (4) are fixedly connected to the connecting rope (301).
4. The anti-fall-off connecting buckle for roller shutter slats according to claim 1, characterized in that: The card slot (302) is engaged with the card block (303).
5. The anti-fall-off connecting buckle for roller shutter slats according to claim 1, characterized in that: The threaded rod (306) has a rotating handle (305) fixedly connected to the outer wall of the rod body near the center of the curtain slat (1).
6. The anti-fall-off connecting buckle for roller shutter slats according to claim 1, characterized in that: The limiting block (308) on the side away from the center of the curtain slat (1) passes through the groove (304) and the locking block (303) to the inside of the slot (310) and is fixedly connected to the fixing block (309). The fixing block (309) is locked and connected to the slot (310).