Safety structure for opening and closing a roller shutter door

Abstract

The application discloses a safety structure for opening and closing a roller shutter door, relates to the technical field of roller shutter doors, and comprises a roller shutter cloth and a connecting component connected with the roller shutter cloth. The connecting component is provided with a clamping groove one corresponding to the roller shutter cloth along the length direction of the connecting component. The side of the connecting component away from the roller shutter cloth is provided with a safety touch edge. The side of the connecting component is provided with a wireless signal emitting device electrically connected with the safety touch edge. The lower side of the connecting component is connected with a buffer soft cloth covering the safety touch edge. A preset gap is left between the buffer soft cloth and the safety touch edge. The buffer soft cloth completely covers the safety touch edge and leaves a preset gap. When the roller shutter door is lowered, the buffer soft cloth contacts the ground before the safety touch edge. The buffer soft cloth can adapt to uneven ground through elastic deformation, prevents the safety touch edge from directly contacting uneven ground and being triggered by mistake, and ensures that the roller shutter door can be normally closed in the environment of uneven ground.

Description

Technical Field

[0001] This application relates to the field of roller shutter technology, and in particular to a safety structure for opening and closing roller shutters. Background Technology

[0002] Roller shutters, with their compact structure, high space utilization, and strong protective performance, are widely used in commercial shops, industrial plants, underground garages, logistics warehouses, and other scenarios. Their core opening and closing function relies on the raising and lowering of the shutter fabric. The structure at the bottom of the shutter, in contact with the ground, is a crucial part ensuring safety and sealing during opening and closing, directly affecting the user experience and lifespan of the roller shutter.

[0003] Most mainstream roller shutters on the market are equipped with a safety contact edge at the bottom. The safety contact edge is electrically connected to a wireless signal transmitter. When the safety contact edge contacts the ground or an obstacle during the descent of the roller shutter, it triggers the wireless signal transmitter to emit a wireless signal to control the roller shutter to stop descending or rise.

[0004] Regarding the aforementioned technologies, the inventors believe that when the ground is uneven, the safety contact edge cannot fully adhere to the ground, which can easily lead to false triggering. That is, the safety contact edge is squeezed due to local ground protrusions, causing the controller to misjudge the presence of obstacles, thus preventing the roller shutter door from closing properly. Utility Model Content

[0005] The purpose of this application is to provide a safety structure for opening and closing roller shutters to improve the problem that when the ground is uneven, the safety contact edge cannot fully fit with the ground, which can easily lead to false triggering. That is, the safety contact edge is squeezed due to local ground protrusions, causing the controller to misjudge the presence of obstacles, thus preventing the roller shutter from closing normally.

[0006] The roller shutter door opening and closing safety structure provided in this application adopts the following technical solution: The roller shutter door opening and closing safety structure includes a roller shutter door fabric and a connecting member connected to the roller shutter door fabric. The connecting member has a snap-fit ​​groove corresponding to the roller shutter door fabric along its length. A safety contact edge is provided on the side of the connecting member away from the roller shutter door fabric. A wireless signal transmitting device electrically connected to the safety contact edge is provided on one side of the connecting member. A cushioning soft cloth covering the safety contact edge is connected and provided below the connecting member, and a preset gap is left between the cushioning soft cloth and the safety contact edge.

[0007] By adopting the above technical solution, the buffer soft cloth completely covers the safety contact edge with a preset gap. When the roller shutter door descends, the buffer soft cloth contacts the ground before the safety contact edge. It can adapt to uneven ground through its own elastic deformation, preventing the safety contact edge from directly contacting the uneven ground and causing false triggering. This ensures that the roller shutter door can still close normally in uneven ground environments. The safety contact edge is electrically connected to the wireless signal transmitter. When the buffer soft cloth comes into contact with obstacles such as people or heavy objects, the obstacle squeezes the buffer soft cloth and triggers the safety contact edge. The wireless signal transmitter can quickly send a wireless signal to control the roller shutter door to stop descending or rise, providing basic safety protection for the opening and closing process.

[0008] Optionally, the cushioning soft cloth is continuously arranged along the length of the connecting member, and the connecting member has a second snap-fit ​​groove on both sides of the safety contact edge to fix the two sides of the cushioning soft cloth.

[0009] By adopting the above technical solution, the buffer soft cloth is continuously set along the length of the connecting component without any breaks or seams. It can completely cover the safety contact edge under the connecting component, preventing the partial exposure of the safety contact edge due to the segmentation of the buffer soft cloth, and preventing ground protrusions from contacting the safety contact edge at the splice point and causing false triggering. The second snap-fit ​​groove under the connecting component fixes the two sides of the buffer soft cloth to ensure that the buffer soft cloth always accurately covers the safety contact edge, preventing the protection failure caused by the offset of the buffer soft cloth.

[0010] Optionally, the edge of the roller shutter door fabric is bent at the inner side wall of the snap-fit ​​groove and a closing part is provided. The closing part fits into the inner side wall of the snap-fit ​​groove. The snap-fit ​​groove extends at the opening and a limiting protrusion is provided that contacts the closing part.

[0011] By adopting the above technical solution, the closed part formed by bending the edge of the roller shutter door fabric can fit against the inner side wall of the locking groove, and the limiting protrusion at the opening of the locking groove can contact the closed part to form a reverse locking structure. When the roller shutter door rises, the roller shutter door fabric is subjected to an upward pulling force, and the limiting protrusion can prevent the closed part from coming out of the opening of the locking groove, ensuring long-term stable connection.

[0012] Optionally, a snap-fit ​​strip is inserted into the closure part along the length of the snap-fit ​​groove, and the diameter of the snap-fit ​​strip is larger than the spacing between the limiting protrusions on both sides of the snap-fit ​​groove.

[0013] By adopting the above technical solution, after the first snap-fit ​​strip is inserted into the first closing part, it can expand the first closing part through its own elasticity, so that the first closing part fits tightly against the inner side wall of the first snap-fit ​​groove, eliminating the gap between the two; the diameter of the first snap-fit ​​strip is larger than the interval between the first limiting protrusions, and the first limiting protrusions can form a physical block on the first snap-fit ​​strip, preventing the first snap-fit ​​strip from pulling the first closing part out. During disassembly and assembly, it is only necessary to pull out the first snap-fit ​​strip from the end of the first snap-fit ​​groove to separate the roller shutter door fabric from the connecting component.

[0014] Optionally, the side wall of the connecting member is provided with an abutment surface, which contacts the side wall of the wireless signal transmitting device.

[0015] By adopting the above technical solution, the abutment surface provides a flat and fixed support surface for the wireless signal transmitter, preventing the wireless signal transmitter from being installed directly on the curved or inclined side wall of the connecting component, which would cause installation tilting. This reduces the pulling of wires and loosening of interfaces caused by tilting. The abutment surface can also support the bottom of the wireless signal transmitter, reducing the impact of external collisions on the wireless signal transmitter and improving its resistance to damage.

[0016] Optionally, the inner sidewalls of the snap-fit ​​grooves on both sides of the connecting member are provided with limiting protrusions, and the two sides of the buffer soft cloth are provided with closing portions that contact the inner sidewalls of the snap-fit ​​grooves and the limiting protrusions. A snap-fit ​​strip is inserted into the closing portion along its length.

[0017] By adopting the above technical solution, the second closed part of the cushioning soft cloth can fit against the inner side wall of the second snap-fit ​​groove and the second limiting protrusion. The second limiting protrusion first positions the second closed part to prevent the cushioning soft cloth from shifting laterally. Then, the second snap-fit ​​strip is inserted into the second closed part to open the second closed part and make it tightly snap-fit ​​into the second snap-fit ​​groove, preventing the cushioning soft cloth from coming off during the frequent raising and lowering of the roller shutter door.

[0018] Optionally, the inner walls of the first and second snap-fit ​​grooves are arranged in an arc shape corresponding to the first and second closure portions.

[0019] By adopting the above technical solution, the arc surfaces of the first and second snap-fit ​​grooves are adapted to the arc-shaped structures of the first and second closing parts, preventing sharp friction between the traditional right-angle inner wall and the closing part, reducing scratches and wear on the closing part during installation and disassembly, and extending the service life of the roller shutter door fabric and cushioning soft cloth.

[0020] Optionally, a fixing groove is provided below the connecting member, and a fixing seat connected to the fixing groove is provided along the length direction of the safety contact edge.

[0021] By adopting the above technical solution, the fixing seat of the safety contact edge can be embedded in the fixing groove of the connecting member. The fixing groove is set along the length direction of the connecting member to ensure that the safety contact edge is in a straight line after installation, preventing local detection blind spots or false sensing caused by the skewness of the safety contact edge, and improving the detection accuracy of the safety contact edge for obstacles.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The cushioning soft cloth completely covers the safety contact edge and leaves a preset gap. When the roller shutter door descends, the cushioning soft cloth contacts the ground before the safety contact edge. It can adapt to the uneven ground through its own elastic deformation, preventing the safety contact edge from directly contacting the uneven ground and causing false triggering, and ensuring that the roller shutter door can still close normally in uneven ground environments. 2. The closed part formed by bending the edge of the roller shutter door fabric can fit into the inner wall of the locking groove. The limiting protrusion at the opening of the locking groove can contact the closed part to form a reverse locking structure. When the roller shutter door rises, the roller shutter door fabric is subjected to an upward pulling force. The limiting protrusion can prevent the closed part from coming out of the opening of the locking groove, ensuring long-term stable connection. 3. The second closing part of the cushioning soft cloth can fit against the inner side wall of the second snap-fit ​​groove and the second limiting protrusion. The second limiting protrusion first positions the second closing part to prevent the cushioning soft cloth from shifting laterally. Then, the second snap-fit ​​strip is inserted into the second closing part to open the second closing part so that it is tightly snapped into the second snap-fit ​​groove, preventing the cushioning soft cloth from coming off during the frequent raising and lowering of the roller shutter door. Attached Figure Description

[0023] Figure 1 This is an overall schematic diagram of the safety structure for opening and closing a roller shutter door; Figure 2 yes Figure 1 A magnified view of part A in the middle.

[0024] In the diagram, 1. Roller shutter fabric; 11. Closure part one; 12. Clip strip one; 2. Connecting component; 21. Clip groove one; 211. Limiting protrusion one; 22. Clip groove two; 221. Limiting protrusion two; 23. Abutting surface; 24. Fixing groove; 3. Safety contact edge; 31. Fixing base; 4. Wireless signal transmitting device; 5. Buffer soft cloth; 51. Preset gap; 52. Closure part two; 53. Clip strip two. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0026] The safety structure for opening and closing roller shutter doors is as follows: Figure 1 and Figure 2The device includes a roller shutter fabric 1 and a connecting member 2 connected to the roller shutter fabric 1. The connecting member 2 is made of aluminum alloy and is arranged along the length of the edge of the roller shutter fabric 1. The connecting member 2 has a locking groove 21 extending along the length direction on the side facing the roller shutter fabric 1. The lower edge of the roller shutter fabric 1 is bent towards the inner wall of the locking groove 21 to form a closing part 11. The closing part 11 can completely fit the inner wall of the locking groove 21, and the side wall at the opening of the locking groove 21 extends inward. A limiting protrusion 211 is formed, which contacts the outer wall of the closing part 11. A snap-fit ​​strip 12 is inserted into the closing part 11 along the length of the snap-fit ​​groove 21. The snap-fit ​​strip 12 is made of elastic rubber and its diameter is larger than the gap between the two limiting protrusions 211. After insertion, it can open the closing part 11, so that the closing part 11 tightly abuts against the inner wall of the snap-fit ​​groove 21 and the limiting protrusion 211, thereby realizing a firm connection between the roller shutter door fabric 1 and the connecting member 2.

[0027] Reference Figure 1 and Figure 2 A fixing groove 24 is opened along the length direction on the side of the connecting member 2 away from the roller shutter door fabric 1. A safety contact edge 3 is installed below the connecting member 2. The top of the safety contact edge 3 is integrally formed with a fixing seat 31 embedded in the fixing groove 24, so that the safety contact edge 3 is fixed below the connecting member 2. One side wall of the connecting member 2 extends outward to form an abutment surface 23. A wireless signal transmitter 4 is fixed to the side wall of the connecting member 2 with screws. The side wall of the wireless signal transmitter 4 is in contact with the abutment surface 23, and the wireless signal transmitter 4 is electrically connected to the safety contact edge 3 through a waterproof wire.

[0028] Reference Figure 1 and Figure 2 Below the connecting member 2, on both sides of the safety contact edge 3, there are two locking grooves 22 extending along the length direction. The inner wall of the locking groove 22 is also an arc-shaped structure, and the inner wall of the locking groove 22 extends into the groove to form a limiting protrusion 221. Below the connecting member 2, there is a cushioning soft cloth 5 covering the safety contact edge 3. The cushioning soft cloth 5 is made of nitrile rubber and is continuously set along the length direction of the connecting member 2. Its two sides are bent towards the inner wall of the locking groove 22 to form a closing part 52. The closing part 52 can fit against the inner wall of the locking groove 22 and the limiting protrusion 221. A second snap-fit ​​strip 53 is inserted into the interior of the second closure part 52 along its length. The material of the second snap-fit ​​strip 53 is the same as that of the first snap-fit ​​strip 12, and its size is adapted to the second closure part 52. After insertion, the second closure part 52 can be opened, so that the cushioning soft cloth 5 is fixed below the connecting member 2 through the cooperation between the second closure part 52 and the second snap-fit ​​groove 22. The cushioning soft cloth 5 completely covers the safety contact edge 3, and a preset gap 51 is left between the two. In addition, the inner sidewalls of the first snap-fit ​​groove 21 and the second snap-fit ​​groove 22 are both arc surfaces corresponding to the first closure part 11 and the second closure part 52, ensuring that the components fit tightly and reducing friction damage.

[0029] The implementation principle of this application embodiment is as follows: When the roller shutter door begins its descent, the roller shutter door fabric 1 moves downward synchronously with the connecting component 2. At this time, the buffer soft fabric 5 below the connecting component 2 contacts the ground before the safety contact edge 3. When the buffer soft fabric 5 comes into contact with obstacles such as people or goods, the pressure exerted by the obstacle on the buffer soft fabric 5 exceeds its elastic deformation limit. The buffer soft fabric 5 is then pressed towards the safety contact edge 3, triggering the sensing element inside the safety contact edge 3. The safety contact edge 3 transmits a signal to the wireless signal transmitter 4, which immediately sends a wireless signal command to control the roller shutter door to stop descending and rise, thus achieving safety protection. If the ground is flat, the buffer soft fabric... After the safety contact edge 3 is in contact with the ground, it continues to descend with the connecting component 2 and makes slight contact with the ground. Due to the isolation effect of the buffer soft cloth 5, the safety contact edge 3 is not subjected to pressure exceeding the threshold, the wireless signal transmitter 4 is not triggered, and the roller shutter door closes normally. If there are uneven structures on the ground, such as small stones protruding or ground depressions, the buffer soft cloth 5 will undergo elastic deformation after contacting the protruding or depressed parts. Because there is a preset gap 51 between the buffer soft cloth 5 and the safety contact edge 3, the deformation will not be transmitted to the safety contact edge 3, preventing the safety contact edge 3 from being falsely triggered due to local pressure, and ensuring that the roller shutter door can still close normally in uneven ground environments.

[0030] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A safety structure for opening and closing a roller shutter door, characterized in that: The device includes a roller shutter door cover (1) and a connecting member (2) connected to the roller shutter door cover (1). The connecting member (2) has a snap-fit ​​groove (21) corresponding to the roller shutter door cover (1) along its length. A safety contact edge (3) is provided on the side of the connecting member (2) away from the roller shutter door cover (1). A wireless signal transmitter (4) electrically connected to the safety contact edge (3) is provided on one side of the connecting member (2). A cushioning soft cloth (5) covering the safety contact edge (3) is connected and provided below the connecting member (2). A preset gap (51) is left between the cushioning soft cloth (5) and the safety contact edge (3).

2. The safety structure for opening and closing a rolling door according to claim 1, characterized in that: The buffer soft cloth (5) is continuously arranged along the length direction of the connecting member (2), and the connecting member (2) is provided with two snap-fit ​​grooves (22) on both sides of the safety contact edge (3) to fix the edges of the buffer soft cloth (5).

3. The safety structure for opening and closing a rolling door according to claim 2, characterized in that: The edge of the roller shutter door fabric (1) is bent on the inner side wall of the snap-fit ​​groove (21) and a closing part (11) is provided. The closing part (11) fits the inner side wall of the snap-fit ​​groove (21). The snap-fit ​​groove (21) is located at the opening and the side wall extends to provide a limiting protrusion (211) that contacts the closing part (11).

4. The safety structure for opening and closing a roller shutter door according to claim 3, characterized in that: A snap-fit ​​strip (12) is inserted into the closed part (11) along the length of the snap-fit ​​groove (21). The diameter of the snap-fit ​​strip (12) is larger than the spacing between the limiting protrusions (211) on both sides of the snap-fit ​​groove (21).

5. The safety structure for opening and closing a roller shutter door according to claim 4, characterized in that: The side wall of the connecting member (2) is provided with an abutment surface (23), which is in contact with the side wall of the wireless signal transmitting device (4).

6. The safety structure for opening and closing a roller shutter door according to claim 5, characterized in that: The inner sidewalls of the snap-fit ​​grooves (22) on both sides of the connecting member (2) are provided with limiting protrusions (221). The two sides of the buffer soft cloth (5) are provided with closing parts (52) that contact the inner sidewalls of the snap-fit ​​grooves (22) and the limiting protrusions (221). The closing parts (52) are provided with snap-fit ​​strips (53) inserted inside along their length.

7. The safety structure for opening and closing a roller shutter door according to claim 6, characterized in that: The inner walls of the first snap-fit ​​groove (21) and the second snap-fit ​​groove (22) are arranged in arc-shaped surfaces corresponding to the first closure part (11) and the second closure part (52).

8. The safety structure for opening and closing a roller shutter door according to claim 7, characterized in that: A fixing groove (24) is provided below the connecting member (2), and a fixing seat (31) connected to the fixing groove (24) is provided along the length direction of the safety contact edge (3).

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