A motorized roller shutter door that is easy to maintain
By introducing quick-release components into electric roller shutters and utilizing the design of limit slides and unlocking blocks, the problem of cumbersome maintenance of electric roller shutters has been solved, enabling convenient disassembly and installation and improving the ease of maintenance of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN YALONG DOOR IND CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-06-09
AI Technical Summary
Existing electric roller shutters are cumbersome to repair and maintain, and it is difficult to easily disassemble internal components.
It adopts quick-release components, including a limiting slide, a detachable base plate, a limiting rod, a tension spring, and an unlocking block. By rotating and pulling the unlocking block, the limiting slide can be disengaged, simplifying the disassembly process.
It facilitates quick disassembly and installation of internal components of the roller shutter door, improving the convenience and flexibility of maintenance and repair.
Smart Images

Figure CN224338884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of roller shutter door technology, and in particular to an electric roller shutter door that is easy to maintain. Background Technology
[0002] Electric roller shutters are a common type of door, widely used in shops, garages, industrial plants, warehouses, and other places. Driven by an electric motor, they open and close automatically, representing an upgrade from traditional manual roller shutters. Electric roller shutters are widely popular due to their smooth opening and closing, ease of use, and simple appearance.
[0003] Most existing roller shutter doors are welded as one piece or bolted to make the equipment more stable. However, when the internal drive components of the roller shutter door need to be lubricated, maintained, and disassembled, the process is cumbersome and inconvenient. Utility Model Content
[0004] To solve the above-mentioned technical problems, this utility model provides an electric roller shutter door that is easy to maintain.
[0005] This utility model is achieved by the following technical solution: an electric roller shutter door that is easy to maintain, including a roller shutter door body, wherein a quick-release assembly is provided inside the roller shutter door body, and a limit assembly is provided on the top of the quick-release assembly.
[0006] The quick-release assembly includes a limiting slide groove located on the right side of the roller shutter door body. A detachable base plate is slidably connected to the inner wall of the limiting slide groove. The right side of the detachable base plate extends through the inner wall of the roller shutter door body. A limiting groove is formed on the front of the detachable base plate. A limiting rod housing is slidably connected to the inner wall of the limiting groove. A limiting slide rod is slidably connected to the inner wall of the limiting rod housing. A limiting rod is slidably connected to the inner wall of the limiting slide rod. A tension spring is fixedly connected to the back of the limiting slide rod. A rotating rod is fixedly connected to the surface of the limiting slide rod. A limiting block is rotatably connected to the outer wall of the rotating rod. An avoidance limiting groove is formed on the inner wall of the roller shutter door body. An unlocking groove is formed on the front of the limiting slide rod. An unlocking block is slidably connected to the inner wall of the unlocking groove. A limiting ring is contacted on the front of the limiting slide rod. The outer wall of the limiting ring is threadedly connected to the inner wall of the roller shutter door body.
[0007] As a further improvement to the above solution, the front of the limiting slide rod penetrates the inner wall of the limiting rod housing, the end of the limiting rod away from the limiting slide rod is fixedly connected to the inner wall of the limiting rod housing, and the outer wall of the limiting block is slidably connected to the inner wall of the avoidance limiting groove.
[0008] The above technical solution involves installing the unlocking block inward along the unlocking groove, then rotating the unlocking block inside the unlocking groove to engage it with the limiting slide rod. Then, the limiting ring is disengaged from the roller shutter door body and the outer surface of the limiting rod. Finally, the unlocking block is pulled outward, causing it to drive the limiting slide rod, which in turn pulls the tension spring outward.
[0009] As a further improvement to the above solution, the limiting component includes a drive rod, the outer wall of which is rotatably connected to the inner wall of the roller shutter door body, and a roller shutter door limiting block is fixedly connected to the surface of the drive rod.
[0010] As a further improvement to the above solution, a roller shutter door limiting groove is provided at the top of the roller shutter door limiting block, and a second limiting slide groove is provided on the inner wall of the roller shutter door limiting groove, and a limiting slider is slidably connected to the inner wall of the second limiting slide groove.
[0011] As a further improvement to the above solution, two limiting slide grooves are provided, and the two limiting slide grooves are symmetrically arranged with respect to the roller shutter door limiting groove as the center. Two limiting sliders are provided, and the two limiting sliders are symmetrically arranged with respect to the roller shutter door limiting groove as the center.
[0012] As a further improvement to the above solution, a limiting spring is fixedly connected to one end of the limiting slider away from the roller shutter door limiting groove, a roller shutter door fixing block is slidably connected to the inner wall of the roller shutter door limiting groove, and the bottom of the limiting slider is slidably connected to the surface of the roller shutter door fixing block.
[0013] As a further improvement to the above solution, a plurality of limiting springs are provided, and the plurality of limiting springs are symmetrically arranged around the center of the roller shutter door fixing block. There are two roller shutter door fixing blocks, and the two roller shutter door fixing blocks are symmetrically arranged around the center of the drive rod.
[0014] The above technical solution involves installing the roller shutter door fixing block into the roller shutter door limiting groove opened in the roller shutter door limiting block, thereby causing the roller shutter door fixing block to compress the limiting slider in two directions towards the limiting slide groove, while the symmetrically arranged limiting sliders compress the limiting springs on both sides.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] This utility model describes a method for performing maintenance on the interior of a roller shutter door. The unlocking block is installed inward along the unlocking groove, then rotated within the groove until it engages with the limiting slide rod. The limiting ring is then disengaged from the roller shutter door body and the limiting rod's outer shell. Pulling the unlocking block outward causes it to move the limiting slide rod, which in turn pulls the tension spring. Simultaneously, the inner wall of the limiting slide rod slides against the outer wall of the limiting rod, providing a limiting effect. Simultaneously, the limiting slide rod drives a rotating rod, which in turn... The movable limit block is limited by the avoidance limit groove, and at the same time, the avoidance limit groove pushes the limit block to rotate around the rotating rod. This causes the limit block to retract into the limit rod shell and the surface of the limit slide rod, thereby disengaging the limit block from the inside of the roller shutter door body. Then, by pulling the limit rod shell outward, the limit rod shell is disengaged from the limit groove opened in the detachable bottom plate, thereby freeing the detachable bottom plate from its limit position. This allows the detachable bottom plate to be disengaged outward along the limit slide groove, facilitating the maintenance and repair of the internal design of the roller shutter door body.
[0017] This invention involves installing a roller shutter door fixing block into the roller shutter door limiting groove created by the roller shutter door limiting block. This causes the roller shutter door fixing block to compress the limiting slider in two directions towards the limiting groove. Simultaneously, the symmetrically arranged limiting sliders compress the limiting springs on both sides. When the roller shutter door fixing block is installed to the bottom of the roller shutter door limiting groove, the limiting sliders are engaged with the surface of the roller shutter door fixing block under the push of the limiting springs. This limits the roller shutter door fixing block, facilitating the disassembly and replacement of the roller shutter door later, and improving the flexibility and convenience of the equipment. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the quick-release component structure of this utility model;
[0020] Figure 3 This is a schematic cross-sectional view of the quick-release component of this utility model;
[0021] Figure 4 This utility model Figure 3 Enlarged structural diagram of section A in the middle;
[0022] Figure 5 This is a schematic diagram of the cross-sectional structure of the limiting slide bar of this utility model;
[0023] Figure 6 This utility model Figure 5 Enlarged structural diagram of section B in the middle;
[0024] Figure 7 This utility model Figure 5 Enlarged structural diagram of section C;
[0025] Figure 8 This is a schematic diagram of the limiting block structure of this utility model;
[0026] Figure 9 This is a schematic diagram of the unlocking groove structure of this utility model;
[0027] Figure 10 This is a schematic diagram of the limiting component structure of this utility model.
[0028] Figure 11 This is a cross-sectional structural diagram of the limiting component of this utility model.
[0029] Explanation of key symbols:
[0030] 1. Roller shutter door body; 2. Quick-release assembly; 201. Limiting slide rail; 202. Removable base plate; 203. Limiting groove; 204. Limiting rod housing; 205. Limiting slide rail; 206. Limiting rod; 207. Tension spring; 208. Rotating rod; 209. Limiting block; 210. Avoidance limiting groove; 211. Unlocking groove; 212. Unlocking block; 213. Limiting ring; 3. Limiting assembly; 301. Drive rod; 302. Roller shutter door limiting block; 303. Roller shutter door limiting groove; 304. Limiting slide rail two; 305. Limiting slider; 306. Limiting spring; 307. Roller shutter door fixing block. Detailed Implementation
[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0032] Example:
[0033] Please combine Figure 1-11 This embodiment of an easy-to-maintain electric roller shutter door includes a roller shutter door body 1, a quick-release assembly 2 is provided inside the roller shutter door body 1, and a limit assembly 3 is provided on the top of the quick-release assembly 2.
[0034] The quick-release assembly 2 includes a limiting slide groove 201, which is located on the right side of the roller shutter door body 1. A removable base plate 202 is slidably connected to the inner wall of the limiting slide groove 201. The right side of the removable base plate 202 extends through the inner wall of the roller shutter door body 1. A limiting groove 203 is provided on the front of the removable base plate 202. A limiting rod housing 204 is slidably connected to the inner wall of the limiting groove 203. A limiting rod 205 is slidably connected to the inner wall of the limiting rod housing 204. A limiting rod 206 is slidably connected to the inner wall of the limiting rod 205. A tension spring 207 is fixedly connected to the back of the limiting slide rod 205, and a rotating rod 208 is fixedly connected to the surface of the limiting slide rod 205. A limiting block 209 is rotatably connected to the outer wall of the rotating rod 208. An avoidance limiting groove 210 is opened on the inner wall of the roller shutter door body 1. An unlocking groove 211 is opened on the front of the limiting slide rod 205. An unlocking block 212 is slidably connected to the inner wall of the unlocking groove 211. A limiting ring 213 is set in contact with the front of the limiting slide rod 205. The outer wall of the limiting ring 213 is threadedly connected to the inner wall of the roller shutter door body 1.
[0035] The front of the limiting slide bar 205 penetrates the inner wall of the limiting rod housing 204. The end of the limiting rod 206 away from the limiting slide bar 205 is fixedly connected to the inner wall of the limiting rod housing 204. The outer wall of the limiting block 209 is slidably connected to the inner wall of the avoidance limiting groove 210.
[0036] The limiting component 3 includes a drive rod 301, the outer wall of which is rotatably connected to the inner wall of the roller shutter door body 1, and a roller shutter door limiting block 302 is fixedly connected to the surface of the drive rod 301.
[0037] The top of the roller shutter door limiting block 302 is provided with a roller shutter door limiting groove 303, and the inner wall of the roller shutter door limiting groove 303 is provided with a limiting slide groove 304, and the inner wall of the limiting slide groove 304 is slidably connected to a limiting slider 305.
[0038] There are two limiting slides 304, which are symmetrically arranged with respect to the roller shutter door limiting groove 303. There are also two limiting sliders 305, which are symmetrically arranged with respect to the roller shutter door limiting groove 303.
[0039] A limiting spring 306 is fixedly connected to one end of the limiting slider 305 away from the limiting groove 303 of the roller shutter door. A roller shutter door fixing block 307 is slidably connected to the inner wall of the limiting groove 303 of the roller shutter door. The bottom of the limiting slider 305 is slidably connected to the surface of the fixing block 307 of the roller shutter door.
[0040] Several limit springs 306 are provided, and the several limit springs 306 are symmetrically arranged with the roller shutter door fixing block 307 as the center. There are two roller shutter door fixing blocks 307, and the two roller shutter door fixing blocks 307 are symmetrically arranged with the drive rod 301 as the center.
[0041] The implementation principle of an easy-to-maintain electric roller shutter door in this embodiment is as follows: When maintenance is required on the inside of the roller shutter door body 1, the unlocking block 212 is installed inward along the unlocking groove 211, and then the unlocking block 212 is rotated inside the unlocking groove 211, causing the unlocking block 212 to engage inside the limiting slide rod 205. Then, the limiting ring 213 is disengaged from the roller shutter door body 1 and the surface of the limiting rod housing 204. Finally, the unlocking block 212 is pulled outward, causing the unlocking block 212 to drive the limiting slide rod 205, thereby limiting the movement of the roller shutter door body 1 and the limiting slide rod 205. The sliding rod 205 pulls the tension spring 207 outward. Simultaneously, the inner wall of the sliding rod 205 slides against the outer wall of the limiting rod 206, acting as a limit. At the same time, the sliding rod 205 drives the rotating rod 208, which in turn drives the limiting block 209. This causes the limiting block 209 to be limited by the clearance limiting groove 210, which in turn pushes the limiting block 209 to rotate around the rotating rod 208. This causes the limiting block 209 to retract into the housing 204 of the limiting rod and onto the surface of the sliding rod 205. The limiting block 209 is disengaged from the interior of the roller shutter door body 1. Then, by pulling the limiting rod housing 204 outward, the limiting rod housing 204 is disengaged from the limiting groove 203 opened in the detachable base plate 202. This causes the detachable base plate 202 to lose its limiting position, allowing it to be disengaged outward along the limiting slide groove 201. This facilitates maintenance and repair of the internal design of the roller shutter door body 1. The roller shutter door fixing block 307 is then installed into the roller shutter door limiting groove 303 opened in the roller shutter door limiting block 302, thereby enabling the roller shutter door to... The fixing block 307 compresses the limiting slider 305 towards the limiting slide groove 304, while the symmetrically arranged limiting sliders 305 compress the limiting springs 306 on both sides. When the roller shutter door fixing block 307 is installed at the bottom of the roller shutter door limiting groove 303, the limiting sliders 305 are engaged with the surface of the roller shutter door fixing block 307 under the push of the limiting springs 306, thereby limiting the roller shutter door fixing block 307 with the limiting sliders 305, which facilitates the disassembly and replacement of the roller shutter door in the later stage, and improves the flexibility and convenience of the equipment.
[0042] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. An easy-to-maintain electric roller shutter door, characterized in that, It includes a roller shutter door body (1), and a quick-release assembly (2) is provided inside the roller shutter door body (1), and a limit assembly (3) is provided on the top of the quick-release assembly (2); The quick-release assembly (2) includes a limiting slide groove (201), which is located on the right side of the roller shutter door body (1). A detachable base plate (202) is slidably connected to the inner wall of the limiting slide groove (201). The right side of the detachable base plate (202) extends through the inner wall of the roller shutter door body (1). A limiting groove (203) is provided on the front of the detachable base plate (202). A limiting rod housing (204) is slidably connected to the inner wall of the limiting groove (203). A limiting rod (205) is slidably connected to the inner wall of the limiting rod housing (204). A limiting rod (206) is slidably connected to the inner wall of the limiting rod (205). A tension spring (207) is fixedly connected to the back of the limiting slide rod (205), a rotating rod (208) is fixedly connected to the surface of the limiting slide rod (205), a limiting block (209) is rotatably connected to the outer wall of the rotating rod (208), an avoidance limiting groove (210) is opened on the inner wall of the roller shutter body (1), an unlocking groove (211) is opened on the front of the limiting slide rod (205), an unlocking block (212) is slidably connected to the inner wall of the unlocking groove (211), a limiting ring (213) is provided in contact with the front of the limiting slide rod (205), and the outer wall of the limiting ring (213) is threadedly connected to the inner wall of the roller shutter body (1).
2. The easily maintainable electric roller shutter door as described in claim 1, characterized in that: The front of the limiting slide rod (205) penetrates the inner wall of the limiting rod housing (204). The end of the limiting rod (206) away from the limiting slide rod (205) is fixedly connected to the inner wall of the limiting rod housing (204). The outer wall of the limiting block (209) is slidably connected to the inner wall of the avoidance limiting groove (210).
3. The electric roller shutter door as described in claim 1, characterized in that: The limiting component (3) includes a drive rod (301), the outer wall of which is rotatably connected to the inner wall of the roller shutter body (1), and a roller shutter limiting block (302) is fixedly connected to the surface of the drive rod (301).
4. The electric roller shutter door as described in claim 3, characterized in that: The top of the roller shutter door limiting block (302) is provided with a roller shutter door limiting groove (303), and the inner wall of the roller shutter door limiting groove (303) is provided with a limiting slide groove two (304), and the inner wall of the limiting slide groove two (304) is slidably connected to a limiting slider (305).
5. The electric roller shutter door that is easy to maintain as described in claim 4, characterized in that: Two limiting slide grooves (304) are provided, and the two limiting slide grooves (304) are symmetrically arranged with the roller shutter door limiting groove (303) as the center. Two limiting sliders (305) are provided, and the two limiting sliders (305) are symmetrically arranged with the roller shutter door limiting groove (303) as the center.
6. The electric roller shutter door that is easy to maintain as described in claim 5, characterized in that: The limiting slider (305) is fixedly connected to a limiting spring (306) at one end away from the roller shutter door limiting groove (303). A roller shutter door fixing block (307) is slidably connected to the inner wall of the roller shutter door limiting groove (303). The bottom of the limiting slider (305) is slidably connected to the surface of the roller shutter door fixing block (307).
7. The electric roller shutter door as described in claim 6, characterized in that: The limiting springs (306) are provided in a plurality of manner, and the plurality of limiting springs (306) are symmetrically arranged with respect to the roller shutter door fixing block (307) as the center. There are two roller shutter door fixing blocks (307), and the two roller shutter door fixing blocks (307) are symmetrically arranged with respect to the center of the drive rod (301).