A rope assembly and a manually retractable passenger stair platform canopy

Abstract

This utility model belongs to the field of canopy technology, specifically a pull rope assembly and a manually retractable passenger boarding stairs platform canopy. Addressing the problem that existing canopies are prone to accidental opening or closing due to external forces or their own weight, posing safety hazards to passengers and staff, the following solution is proposed: Two mounting brackets are fixed to the passenger boarding stairs. Two slide rails are fixed between the two mounting brackets. A common canopy body for opening or closing is slidably connected to the two slide rails via pulleys. A U-shaped frame is fixed to the side end of one of the mounting brackets. A first groove is formed within the U-shaped frame, and a rotating shaft rotates within the first groove. A guide roller for winding the pull rope is fixed to the surface of the rotating shaft. The engaging engagement between a positioning block and a semi-circular limiting block effectively prevents the guide roller from rotating from the outside, avoiding accidental opening or closing of the canopy body due to misoperation or external interference, thus ensuring the safety of passengers and staff.

Description

Technical Field

[0001] This utility model relates to the field of canopy technology, and in particular to a pull rope assembly and a manually retractable passenger elevator platform canopy. Background Technology

[0002] During the use of passenger boarding stairs, providing passengers with shelter from wind and rain is of paramount importance. As a key component for achieving this function, the ease and stability of the canopy's opening and closing directly affect the user experience of the passenger boarding stairs.

[0003] Some canopies use a simple pull-cord manual operation method, which is not only laborious to operate, but also difficult to maintain a stable state after adjustment. They are prone to accidental opening or closing due to external forces or their own weight, posing safety hazards to passengers and staff. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies, which are prone to accidental opening or closing due to external forces or their own weight, posing safety hazards to passengers and staff. Therefore, this utility model proposes a rope assembly and a manually retractable passenger elevator platform canopy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A pull rope assembly and a manually retractable passenger boarding stairs platform canopy include two mounting brackets fixed to the passenger boarding stairs, two slide rails fixed between the two mounting brackets, and a common canopy body for opening or closing slidably connected in the two slide rails by pulleys. A U-shaped frame is fixed to the side end of one of the mounting brackets, and a first groove is formed in the U-shaped frame. A rotating shaft rotates in the first groove, and a guide roller for winding a pull rope is fixed on the surface of the rotating shaft. The pull rope and the canopy body are fixedly connected by spring clips.

[0007] To ensure stability after adjusting the pull rope, a set of self-locking components is provided inside the U-shaped frame. The self-locking components are used to position the guide roller after it is rotated.

[0008] And a locking assembly used in conjunction with the self-locking assembly, the locking assembly being located on the outside of the U-shaped frame to prevent the guide roller from being driven to rotate from the outside after the guide roller is adjusted.

[0009] In one possible design, the self-locking assembly includes a fourth groove formed in the U-shaped frame, the rotating shaft extends outwardly into the fourth groove, the rotating shaft rotates within the fourth groove, a worm gear is fixed on the surface of the rotating shaft, and a worm meshing with the worm gear rotates within the fourth groove;

[0010] The worm gear rotates to drive the worm wheel, which in turn drives the shaft to rotate. The shaft then drives the guide roller to rotate, and the guide roller can adjust the pull rope, thereby controlling the opening and closing of the canopy.

[0011] In one possible design, the worm gear moves outward through the side end of the U-shaped frame and extends outward. A connecting rod is fixed to the side end of the worm gear. A rotating rod is sleeved on the surface of the connecting rod. A third groove is formed inside the rotating rod. The third groove matches the connecting rod. A threaded groove is formed inside the connecting rod. A screw for limiting the rotating rod is threaded into the threaded groove.

[0012] The screw is fixed in the threaded groove, and the screw works with the connecting rod to limit the rotation of the rod.

[0013] In one possible design, the locking assembly includes a second groove on the surface of the connecting rod, within which a plurality of semi-circular limiting blocks are uniformly fixed, and a locking gap is formed between each of the semi-circular limiting blocks. The rotating rod has a fifth groove communicating with the third groove, within which a threaded block slides. A positioning block is fixed to the top of the threaded block, and the positioning block engages with a corresponding locking gap.

[0014] In one possible design, the locking assembly further includes a lead screw that rotates within a fifth groove, the outer wall of which is fitted with a slider that engages with a helical groove of the lead screw, the slider being fixed within a threaded block;

[0015] In this process, the screw is rotated by turning the screw ring. When the screw rotates, it causes the slider to move relative to the block. The slider causes the threaded block to move up and down relative to the block. When the positioning block enters the locking gap, rotating the rotating rod can drive the connecting rod to rotate. The connecting rod drives the threaded groove to rotate, thereby activating the self-locking assembly to rotate the guide roller.

[0016] In one possible design, the lead screw extends outward through the side end of the rotating rod, and a screw ring is fixed to the side end of the lead screw.

[0017] In one possible design, a handle is fixed to the side end of the rotating rod, and the surface of the handle is provided with anti-slip texture.

[0018] In this application, the worm gear is rotated to drive the worm wheel to rotate, the worm wheel rotates to drive the shaft to rotate, the shaft rotates to drive the guide roller to rotate, and the guide roller can adjust the pull rope, thereby controlling the opening or closing of the canopy.

[0019] The screw is fixed in the threaded groove, and the screw, together with the connecting rod, limits the movement of the rotating rod;

[0020] By turning the screw ring, the lead screw is driven to rotate. When the lead screw rotates, it causes the slider to move relative to the other side. The slider causes the threaded block to move up and down relative to the other side. When the positioning block enters the locking gap, rotating the rotating rod can drive the connecting rod to rotate. The connecting rod drives the threaded groove to rotate, thereby activating the self-locking assembly to rotate the guide roller.

[0021] Beneficial effects: In this utility model, the pull rope assembly and manually retractable passenger elevator platform canopy, through the setting of a rotating rod and a handle, allow the operator to easily rotate the guide roller to control the opening or closing of the canopy. At the same time, the design of the screw and the screw ring makes the limiting and locking operations of the rotating rod simple and easy, greatly improving the convenience of operation;

[0022] In this invention, the pull rope assembly and manually retractable passenger boarding stairs platform canopy further enhance system safety through the locking component. The interlocking action between the positioning block and the semi-circular limiting block effectively prevents the guide rollers from rotating from the outside, avoiding accidental opening or closing of the canopy due to misoperation or external interference, thus ensuring the safety of passengers and staff.

[0023] In this invention, the self-locking component adopts a worm gear transmission structure. Utilizing the self-locking performance of the worm gear, the guide roller can be automatically positioned after the pull rope is adjusted, preventing the guide roller from rotating unexpectedly due to external forces and ensuring the stability of the canopy body after it is opened or closed. Attached Figure Description

[0024] Figure 1 This is a front perspective view of the manual retractable passenger elevator platform canopy proposed in this utility model;

[0025] Figure 2 This is a partial perspective view of a pull rope assembly proposed in this utility model;

[0026] Figure 3 This is a partial exploded view of a rope assembly proposed in this utility model;

[0027] Figure 4 This is a partial cross-sectional view of a rope assembly proposed in this utility model.

[0028] In the diagram: 1. Mounting frame; 2. Slide rail; 3. Awning body; 4. U-shaped frame; 5. First groove; 6. Guide roller; 7. Rotating shaft; 8. Worm gear; 9. Worm; 10. Rotating rod; 11. Turning handle; 12. Screw; 13. Threaded groove; 14. Connecting rod; 15. Second groove; 16. Semi-circular limiting block; 17. Tightening ring; 18. Third groove; 19. Positioning block; 20. Threaded block; 21. Lead screw; 22. Fourth groove; 23. Fifth groove. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] Example 1: Refer to Figures 1-4 A rope-operated assembly and a manually retractable passenger boarding stairs platform canopy are disclosed. This invention relates to the field of canopy technology. Two mounting brackets 1 are fixedly installed on the passenger boarding stairs, parallel to each other and maintaining a certain distance. Two sliding rails 2 are fixedly installed between the two mounting brackets 1 by welding or bolting, also parallel to each other and horizontally positioned. The sliding rails 2 are made of high-strength aluminum alloy with a smooth surface treatment to reduce friction during pulley sliding.

[0031] Within two sliding rails 2, a single canopy body 3 is slidably connected via pulleys. The canopy body 3 is made of a lightweight yet strong waterproof material, such as high-density polyethylene coated fabric, with reinforcing ribs installed along its edges to ensure overall strength. Pulleys are evenly distributed along both sides of the canopy body 3, ensuring smooth and stable sliding on the sliding rails 2, thus enabling the canopy to open or close.

[0032] A U-shaped frame 4 is fixedly installed on the side of one of the mounting brackets 1 by welding. The U-shaped frame 4 is made of steel and has sufficient strength and rigidity to support the subsequent components. A first groove 5 is formed inside the U-shaped frame 4. The first groove 5 is cylindrical and its internal dimensions match the installation requirements of the guide roller 6 and the rotating shaft 7.

[0033] Within the first groove 5, a rotating shaft 7 is rotatably mounted via a bearing, and a guide roller 6 is fixedly mounted on the surface of the rotating shaft 7. The guide roller 6 is cylindrical with a frosted surface to increase friction with the pull rope, ensuring that the pull rope can be stably wound around the guide roller 6. One end of the pull rope is fixed to the guide roller 6, and the other end is connected to the canopy body 3. By rotating the guide roller 6, the pull rope can be extended or retracted, thereby controlling the opening or closing of the canopy body 3.

[0034] A fourth groove 22 is formed inside the U-shaped frame 4, and the fourth groove 22 is connected to the first groove 5. The rotating shaft 7 moves outward through the fourth groove 22 and rotates within the fourth groove 22 via a bearing. A worm gear 8 is fixedly installed on the surface of the rotating shaft 7 by a key connection. The number of teeth and module of the worm gear 8 are designed according to the actual transmission requirements.

[0035] Within the fourth groove 22, a worm 9, meshing with the worm wheel 8, is rotatably mounted via a bearing. The helix angle and lead angle of the worm 9 are precisely calculated to ensure its self-locking performance; that is, when the worm 9 stops rotating, the worm wheel 8 cannot be driven to rotate by external force, thereby achieving the positioning of the guide roller 6.

[0036] The worm gear 9 extends outward through the side end of the U-shaped frame 4, and a connecting rod 14 is fixedly installed at the side end of the worm gear 9. The connecting rod 14 is cylindrical with a smooth surface. A rotating rod 10 is fitted onto the surface of the connecting rod 14, and a third groove 18 is formed inside the rotating rod 10. The size of the third groove 18 matches that of the connecting rod 14, allowing the rotating rod 10 to slide freely on the connecting rod 14.

[0037] Example 2: Reference Figures 1-4 An improvement on embodiment 1 is made by creating a threaded groove 13 within the connecting rod 14, the thread specification of which is compatible with that of the screw 12. The screw 12 is threaded into the threaded groove 13, and by tightening the screw 12, the end of the screw 12 is brought into close contact with the end of the rotating rod 10, thereby limiting the rotation rod 10 and preventing it from sliding when not in operation.

[0038] A second groove 15 is formed on the surface of the connecting rod 14. The second groove 15 is annular, and multiple semi-circular limiting blocks 16 are uniformly fixed inside it. Multiple snap-fit ​​gaps are formed between the multiple semi-circular limiting blocks 16. The width and depth of the snap-fit ​​gaps are designed according to the size of the positioning block 19 to ensure that the positioning block 19 can be stably snapped into the snap-fit ​​gaps.

[0039] A fifth groove 23, which communicates with the third groove 18, is made inside the rotating rod 10. A threaded block 20 is slidably installed in the fifth groove 23. A positioning block 19 is fixedly installed at the top of the threaded block 20. The shape of the positioning block 19 is semi-circular and matches the snap-fit ​​gap.

[0040] Within the fifth groove 23, a lead screw 21 is rotatably mounted via a bearing. A slider, which engages with the helical groove of the lead screw 21, is fitted onto the outer wall of the lead screw 21. The slider is fixed to the threaded block 20 by welding or bolting. The lead screw 21 extends outward through the side end of the rotating rod 10, and a screw ring 17 is fixedly mounted on the side end of the lead screw 21. The surface of the screw ring 17 has anti-slip textures for easy screwing by the operator.

[0041] A throttle handle 11 is fixedly installed on the side end of the throttle rod 10 by welding. The surface of the throttle handle 11 is provided with anti-slip texture to increase the friction when the operator rotates the throttle rod 10, making the operation more convenient.

[0042] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pull cord assembly for controlling the opening or closing of a pull cord awning, characterized in that, include: Two mounting brackets (1) are fixed on the passenger boarding bus. Two slide rails (2) are fixed between the two mounting brackets (1). The same canopy body (3) for opening or closing is slidably connected in the two slide rails (2) by pulleys. A U-shaped frame (4) is fixed to the side end of one of the mounting brackets (1). A first groove (5) is opened in the U-shaped frame (4). A rotating shaft (7) rotates in the first groove (5). A guide roller (6) for winding a pull rope is fixed on the surface of the rotating shaft (7). The pull rope and the canopy body (3) are fixedly connected by spring buckles. In order to ensure stability after adjusting the pull rope, a set of self-locking components is provided in the U-shaped frame (4). The self-locking components are used to position the guide roller (6) after rotating the guide roller (6). And a locking assembly used in conjunction with the self-locking assembly, the locking assembly being located on the outside of the U-shaped frame (4) to prevent the guide roller (6) from rotating from the outside after adjusting the guide roller (6).

2. The pull rope assembly according to claim 1, characterized in that, The self-locking assembly includes a fourth groove (22) opened in the U-shaped frame (4), the rotating shaft (7) extends outward and passes through the fourth groove (22), the rotating shaft (7) rotates in the fourth groove (22), a worm wheel (8) is fixed on the surface of the rotating shaft (7), and a worm (9) that meshes with the worm wheel (8) rotates in the fourth groove (22). Among them, the worm gear (9) is rotated to drive the worm wheel (8) to rotate, the worm wheel (8) rotates to drive the shaft (7) to rotate, the shaft (7) drives the guide roller (6) to rotate, and the guide roller (6) can adjust the pull rope, thereby controlling the opening or closing of the canopy body (3).

3. A pull rope assembly according to claim 2, characterized in that, The worm (9) moves outward through the side end of the U-shaped frame (4) and extends outward. A connecting rod (14) is fixed to the side end of the worm (9). A rotating rod (10) is sleeved on the surface of the connecting rod (14). A third groove (18) is opened in the rotating rod (10). The third groove (18) matches the connecting rod (14). A threaded groove (13) is opened in the connecting rod (14). A screw (12) for limiting the rotating rod (10) is threaded in the threaded groove (13). Among them, the screw (12) is fixed in the threaded groove (13), and the screw (12) cooperates with the connecting rod (14) to limit the rotation rod (10).

4. A pull rope assembly according to claim 3, characterized in that, The locking assembly includes a second groove (15) on the surface of the connecting rod (14), a plurality of semi-circular limiting blocks (16) are uniformly fixed in the second groove (15), and a snap-fit ​​gap is formed between the plurality of semi-circular limiting blocks (16). A fifth groove (23) communicating with the third groove (18) is opened in the rotating rod (10), and a threaded block (20) slides in the fifth groove (23). A positioning block (19) is fixed at the top of the threaded block (20), and the positioning block (19) snaps into the corresponding snap-fit ​​gap.

5. A pull rope assembly according to claim 4, characterized in that, The locking assembly also includes a lead screw (21) that rotates in the fifth groove (23), and the outer wall of the lead screw (21) is fitted with a slider that works in conjunction with the spiral groove of the lead screw (21), and the slider is fixed in the threaded block (20); In this process, by driving the lead screw (21) to rotate, the lead screw (21) rotates and drives the slider to make relative displacement. The slider drives the threaded block (20) to make relative up and down displacement. When the positioning block (19) enters the snap-fit ​​gap, rotating the rotating rod (10) can drive the connecting rod (14) to rotate. The connecting rod (14) drives the threaded groove (13) to rotate, thereby activating the self-locking assembly to rotate the guide roller (6).

6. A pull rope assembly according to claim 5, characterized in that, The lead screw (21) moves outward through the side end of the rotating rod (10), and a screw ring (17) is fixed to the side end of the lead screw (21).

7. A pull rope assembly according to claim 5, characterized in that, The rotating rod (10) has a handle (11) fixed to its side end, and the surface of the handle (11) is provided with anti-slip texture.

8. A manually retractable passenger staircase platform canopy, characterized in that, Includes a pull cord assembly as described in any one of claims 1-5.

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