Self-locking limiting device for anti-falling rolling gate
By designing a self-locking limiting device for the rolling gate, the combination of gears and springs is used to solve the problems of lag and fall caused by torsion spring fatigue in the traditional rolling gate, and the stable limit of the rolling gate and the extended spring life are achieved.
Patent Information
- Application Number
- CN202420266143.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-03
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-02-03
AI Technical Summary
Traditional rolling gates achieve pulling and limiting through torsion springs. Frequent use may cause metal fatigue, resulting in lag or inability to limit the position.
A self-locking limiting device is designed, including a self-locking box, a rotating shaft, a gear and a spring. Through the cooperation of gears and springs, the self-locking and limiting of the rolling gate is realized, and the service life of the spring is extended.
Effectively prevent the lag and fall of the rolling gate due to spring fatigue during use, ensure the smooth opening and closing of the rolling gate and limiting, and extend the service life of the spring.
Smart Images
Figure CN222162460U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-locking and limiting, in particular to a self-locking and limiting device for anti-falling rolling shutter doors. Background Art
[0002] Rolling shutters, also known as rolling doors, are made up of numerous articulated panels that rotate upward and downward along a fixed slideway, pivoting around a reel above the door. They are suitable for commercial premises, garages, shopping malls, hospitals, factories, mines, and other public spaces, as well as residential areas.
[0003] Existing traditional rolling shutters use torsion springs to achieve lifting and limiting. Rolling shutters need to be opened and closed frequently in daily use. Torsion springs may produce metal fatigue after repeated use, causing the rolling shutter to become stuck and difficult to pull up during the pushing and pulling process after a period of use, or it may be unable to limit and fall. Utility Model Content
[0004] (1) Technical problems solved
[0005] In response to the deficiencies in the prior art, the utility model provides a self-locking limit device for anti-fall rolling shutter doors, which solves the technical problem that the existing traditional rolling shutter doors use torsion springs to achieve pulling and limiting. The rolling shutter doors need to be opened and closed frequently in daily use, and the torsion springs may produce metal fatigue after repeated use, resulting in the rolling shutter doors becoming stuck and difficult to pull up during the pushing and pulling process after a period of use, or being unable to limit and cause falling.
[0006] (2) Technical solution
[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:
[0008] A self-locking limit device for an anti-falling rolling shutter door, the self-locking limit device for an anti-falling rolling shutter door includes a self-locking box, a side end of the self-locking box is fixedly installed with a rotating shaft, and the side end of the rotating shaft located on the opposite surface of the self-locking box is rotatably installed with a first gear; the rotating shaft is located at the side end of the inner side wall of the self-locking box, and is characterized in that the side end of the first gear located on the opposite surface of the rotating shaft is fixedly installed with a second gear, and the side end of the second gear located on the opposite surface of the first gear is rotatably installed with a third gear; the second gear and the third gear are one-way end face gears, and are characterized in that the side end of the self-locking box is rotatably installed with a transmission shaft, and the outer side wall of the transmission shaft is rotatably installed with a first spring; a through hole is opened at the side end of the self-locking box, and one end of the transmission shaft passes through the through hole and is fixedly connected to the third gear.
[0009] Preferably: a pressure plate is fixedly installed on the inner side wall of the self-locking box, a second spring is fixedly installed on the bottom end of the pressure plate, and a shift block is rotatably installed on the side end of the self-locking box; the pressure plate is located at the side end of the inner side wall of the self-locking box.
[0010] Preferably, a rotating block is fixedly mounted on the inner side wall of the self-locking box, and a locking rod is rotatably mounted on the inner side wall of the rotating block; the rotating block is located at the bottom end of the inner side wall of the self-locking box, and the top end of the locking rod is fixedly connected to the bottom end of the second spring. A connecting ring is slidably mounted on the outer side wall of the transmission shaft at the side end of the self-locking box; the connecting ring is used to connect the transmission shaft to the shaft of the rolling shutter door.
[0011] (3) Beneficial effects
[0012] 1. During the contraction process, the rolling shutter door will expand more and more around the axis until the edge of the rolling shutter door is fully tightened and just contacts the end of the shift block outside the self-locking box. Then continue to push the rolling shutter door upward to push the end of the shift block inside the self-locking box to move downward. When the end of the shift block inside the self-locking box moves downward, it will press one end of the locking rod. When the locking rod rotates on the inner wall of the rotating block, the other end of the rotating block is lifted up through rotation to lock the first gear. When the first gear is stuck, the rolling shutter door completes self-locking.
[0013] 2. Pull the rolling shutter door downward with force. When the force of pulling the rolling shutter door overcomes the elastic force of the first spring, the third gear can rotate counterclockwise to drive the transmission shaft and the first spring to rotate counterclockwise, and the rolling shutter door can be pulled downward. When the rolling shutter door leaves the dial block, the locking rod will reset under the action of the second spring, releasing the lock on the first gear, thereby increasing the service life of the first spring. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.
[0015] Figure 1 This is a structural diagram of the self-locking box of the utility model;
[0016] Figure 2 This is a gear structure diagram of the utility model;
[0017] Figure 3 This is a structural diagram of the connecting ring of the utility model;
[0018] Figure 4 This is a structural diagram of the locking rod of the present utility model.
[0019] Legend: 1. Self-locking box; 2. Rotating shaft; 3. First gear; 4. Connecting ring; 5. Shift block; 6. Second gear; 7. Third gear; 8. Transmission shaft; 9. First spring; 11. Locking rod; 12. Rotating block; 13. Second spring; 14. Pressure plate. DETAILED DESCRIPTION
[0020] The embodiment of the present application provides a self-locking limit device for anti-fall rolling shutter doors, which effectively solves the problem that the existing traditional rolling shutter doors use torsional springs to achieve lifting and limiting. Rolling shutter doors need to be frequently opened and closed in daily use. The torsional springs may produce metal fatigue after repeated use, resulting in the rolling shutter door being stuck and difficult to pull up during the pushing and pulling process after a period of use, or being unable to limit and fall. The rolling shutter door will become larger and larger around the axis during the contraction process until the rolling shutter door is fully tightened. The boundary of the rolling shutter door just contacts the end of the shift block outside the self-locking box, and then continuing to push the rolling shutter door upward will push the shift block in the self-locking box. When the shutter door leaves the shift block, the latch rod will be reset under the action of the second spring, releasing the lock on the first gear and increasing the service life of the first spring.
[0021] Example
[0022] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, the technical solution in the embodiment of the present application effectively solves the technical problem that the existing traditional rolling shutter door uses a torsion spring to achieve lifting and limiting. The rolling shutter door needs to be opened and closed frequently in daily use. The torsion spring may produce metal fatigue after repeated use, resulting in the rolling shutter door being stuck and difficult to pull up during the pushing and pulling process after a period of use, or being unable to limit and fall. The overall idea is as follows:
[0023] In response to the problems existing in the prior art, the present invention provides a self-locking limit device for an anti-falling rolling shutter door, which includes a self-locking limit device for an anti-falling rolling shutter door, comprising a self-locking box 1, a rotating shaft 2 being fixedly mounted on the side end of the self-locking box 1, and a first gear 3 being rotatably mounted on the side end of the rotating shaft 2 located on the opposite side of the self-locking box 1; the rotating shaft 2 is located on the side end of the inner side wall of the self-locking box 1, a second gear 6 is fixedly mounted on the side end of the first gear 3 located on the opposite side of the rotating shaft 2, and a third gear 7 is rotatably mounted on the side end of the second gear 6 located on the opposite side of the first gear 3;
[0024] The second gear 6 and the third gear 7 are one-way end gears. The side end of the self-locking box 1 is rotatably mounted with a transmission shaft 8, and the outer side wall of the transmission shaft 8 is rotatably mounted with a first spring 9; a through hole is opened at the side end of the self-locking box 1, one end of the transmission shaft 8 passes through the through hole and is fixedly connected to the third gear 7, a pressure plate 14 is fixedly mounted on the inner side wall of the self-locking box 1, and a second spring 13 is fixedly mounted on the bottom end of the pressure plate 14, and a shift block 5 is rotatably mounted on the side end of the self-locking box 1;
[0025] The pressure plate 14 is located at the side end of the inner wall of the self-locking box 1, and a rotating block 12 is fixedly installed on the inner wall of the self-locking box 1, and a locking rod 11 is rotatably installed on the inner wall of the rotating block 12; the rotating block 12 is located at the bottom end of the inner wall of the self-locking box 1, and the top end of the locking rod 11 is fixedly connected to the bottom end of the second spring 13, and a connecting ring 4 is slidably installed on the outer side wall of the transmission shaft 8 located at the side end of the self-locking box 1; the connecting ring 4 is used to connect the transmission shaft 8 and the shaft of the rolling shutter door.
[0026] Working principle:
[0027] The first step is to fix the shaft of the rolling shutter door with the first spring 9, and then install the rolling shutter door and the device in place. When the rolling shutter door needs to be opened, push the rolling shutter door upward to rotate clockwise around the axis, and the shaft of the rolling shutter door will rotate with the connecting ring 4. The connecting ring 4 rotates with the transmission shaft 8 through engagement with the transmission shaft 8. The force applied by the first spring 9 causes the third gear 7 to clamp the second gear 6, so that the second gear 6 drives the first gear 3 to rotate around the rotating shaft 2 inside the self-locking box 1, and the rolling shutter door retracts. When the locking rod 11 is rotated on the inner wall of the rotating block 12, the other end of the rotating block 12 is lifted up and locked to the first gear 3.
[0028] In the second step, when the first gear 3 is stuck, the rolling shutter door completes self-locking. When the rolling shutter door needs to be pulled down, pull the rolling shutter door downward with force. When the force of pulling the rolling shutter door overcomes the elastic force of the first spring 9, the third gear 7 can rotate counterclockwise to drive the transmission shaft 8 and the first spring 9 to rotate counterclockwise to pull the rolling shutter door downward. When the rolling shutter door leaves the dial block 5, the locking rod 11 will be reset under the action of the second spring 13, releasing the lock on the first gear 3, so that the rolling shutter door can be closed smoothly.
[0029] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.
Claims
1. A self-locking limit device for an anti-fall rolling shutter door, characterized in that: The self-locking limit device for an anti-fall rolling shutter door comprises a self-locking box (1), a rotating shaft (2) is fixedly mounted on the side end of the self-locking box (1), a first gear (3) is rotatably mounted on the side end of the rotating shaft (2) located on the opposite side of the self-locking box (1), a second gear (6) is fixedly mounted on the side end of the first gear (3) located on the opposite side of the rotating shaft (2), a third gear (7) is rotatably mounted on the side end of the second gear (6) located on the opposite side of the first gear (3), and a transmission shaft (8) is rotatably mounted on the side end of the self-locking box (1). 8), a first spring (9) is rotatably mounted on the outer wall of the transmission shaft (8), a pressure plate (14) is fixedly mounted on the inner wall of the self-locking box (1), a second spring (13) is fixedly mounted on the bottom end of the pressure plate (14), a shift block (5) is rotatably mounted on the side end of the self-locking box (1), a rotating block (12) is fixedly mounted on the inner wall of the self-locking box (1), a locking rod (11) is rotatably mounted on the inner wall of the rotating block (12), and a connecting ring (4) is slidably mounted on the outer wall of the transmission shaft (8) at the side end of the self-locking box (1); The rotating shaft (2) is located at the side end of the inner wall of the self-locking box (1), the second gear (6) and the third gear (7) are one-way end face gears, a through hole is opened at the side end of the self-locking box (1), one end of the transmission shaft (8) passes through the through hole and is fixedly connected to the third gear (7), the pressure plate (14) is located at the side end of the inner wall of the self-locking box (1), the rotating block (12) is located at the bottom end of the inner wall of the self-locking box (1), the top end of the locking rod (11) is fixedly connected to the bottom end of the second spring (13), and the connecting ring (4) is used to connect the transmission shaft (8) and the shaft of the rolling shutter door.