Synchronous belt driven random stop type rolling screen window

Abstract

The screen window comprises a left guide rail and a right guide rail, pulley assemblies are slidably connected to the surfaces of the left guide rail and the right guide rail, the outer surfaces of a first gear, a second gear and a third gear are jointly sleeved with a synchronous toothed belt in a meshed mode, and the synchronous toothed belt is fixedly connected to the lower ends of the pulley assemblies in a clamped mode. The rotating ends of the two first gears are in transmission connection with a winding assembly, the outer surface of the winding assembly is fixedly sleeved with a winding drum, the outer surface of the winding drum is fixedly connected with a gauze element, and the end of the gauze element is fixedly connected with a handle. A synchronous toothed belt can be driven to rotate by shifting a handle, a first gear, a second gear and a third gear can be driven to rotate by utilizing the rotation of the synchronous toothed belt, a winding drum can be driven to rotate by utilizing the transmission connection of the first gear and a winding assembly, and the handle is matched to pull the end part of a gauze element, so that the winding and unfolding of the gauze element can be realized; and the handle can be controlled to stop at any position, so that the screen window can be conveniently unfolded at any size.

Description

Technical Field

[0001] The present invention relates to the technical field of retractable screen windows, and specifically relates to a synchronous belt-driven stop-type retractable screen window. Background Technique

[0002] A retractable screen window is a screen window that realizes automatic retraction of the screen through a special structure, and is mainly used for ventilation and mosquito prevention. Its frame is tightly attached to the window frame. When in use, the screen is pulled down, and when not in use, the screen will automatically retract into the screen box, occupying no space and having strong sealing performance, which is suitable for high-end home decoration. Its working principle is: the screen is collected by a reel. When opening, the screen is pulled out by a handle to form a ventilation passage; when closing, the screen automatically rolls back into the reel under the action of the spring force.

[0003] However, when the existing retractable screen windows on the market are in use, there are still some problems and deficiencies: during the opening process of the retractable screen window, the screen window can only be fully opened and cannot be opened to any size according to requirements; moreover, when closing the retractable screen window, the spring will pull the reel to retract. At this time, the pulling force generated by the spring will change from the maximum pulling force state to the minimum pulling force state. During this process, the spring drives the handle to move, which is very easy to hit the hand and cause harm to the user. Therefore, it is urgent to solve this problem. Summary of the Invention

[0004] The purpose of the present invention is to provide a synchronous belt-driven stop-type retractable screen window to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A synchronous belt-driven stop-type retractable screen window includes a left guide rail and a right guide rail. A left gear box is fixedly installed at the end of the left guide rail, and a left gear box cover is detachably installed on the surface of the left gear box. A right gear box is fixedly installed at the end of the right guide rail, and a right gear box cover is detachably installed on the surface of the right gear box. Pulley assemblies are slidably connected to the surfaces of the left guide rail and the right guide rail. A first gear, a second gear, and a third gear are respectively rotatably connected to the inside of the left gear box and the left guide rail, and the right gear box and the right guide rail. And a synchronous toothed belt is sleeved and meshed on the outer surfaces of the first gear, the second gear, and the third gear, and the synchronous toothed belt is fixedly clamped at the lower end of the pulley assembly. The rotating ends of the two first gears are drivingly connected to a winding assembly. A reel is fixedly sleeved on the outer surface of the winding assembly. A screen is fixedly connected to the outer surface of the reel. One end of the screen is fixedly connected to a handle, and both ends of the handle are fixedly installed on the two pulley assemblies through connection bases respectively.

[0006] Preferably, the pulley assembly includes two limiting pulleys and a pulley seat. A through groove is formed on the surface of the pulley seat, and multiple limiting pulleys are rotatably connected in the through groove. Limiting wheel grooves are formed on the surfaces of the left guide rail and the right guide rail, and the limiting pulleys are rollingly installed in the limiting wheel grooves.

[0007] Preferably, the surfaces of the left guide rail and the right guide rail are both provided with edge-hiding grooves, and both sides of the gauze mesh extend into the edge-hiding grooves.

[0008] Preferably, the end portion of the first gear in the left gear box is provided with a straight groove, and the end portion of the first gear in the right gear box is provided with a hexagonal groove.

[0009] Preferably, the winding assembly includes a straight head, a hexagonal sleeve, a hexagonal rod, a spring tightening piece, a spring tightening tail, a pre-tightening spring, a clamping sleeve and a hexagonal short rod. The straight head is detachably plugged into the surface of the first gear in the left gear box, the hexagonal sleeve is fixedly connected to the surface of the straight head, one end of the hexagonal rod is fixedly clamped in the hexagonal sleeve, and the other end of the hexagonal rod is fixedly clamped on the inner wall of the spring tightening piece, one end of the pre-tightening spring is fixedly connected to the surface of the spring tightening piece, and the other end of the pre-tightening spring is fixedly connected to the end of the spring tightening tail, and the outer side of the spring fastening tail is clamped on the inner wall of the reel, the inner side of the spring fastening tail is sleeved on the outside of the hexagonal rod, the clamping sleeve is fixedly clamped on the left end of the reel, and the inner side of the clamping sleeve is rotatably connected to the outer side of the straight head, one end of the hexagonal short rod is clamped and fixed to the end of the spring tightening piece, and the other end of the hexagonal short rod is clamped and fixed to the surface of the first gear in the right gear box.

[0010] Preferably, the outer surface of the hexagonal short rod is sleeved with an axis core sleeve, two first bearings are provided on the inner side of the axis core sleeve, and the two first bearings are sleeved on the outer surface of the hexagonal short rod, a positioning spring is provided between the two first bearings, the surface of the right gear box cover is integrally formed with a clutch cap, the outer surface of the hexagonal short rod is integrally formed with a clutch plug, and the clutch plug can be engaged with the clutch cap.

[0011] Preferably, a second bearing is provided on the inner side of the clutch cap, and the inner side of the second bearing is sleeved on the outer surface of the hexagonal short rod.

[0012] Preferably, the outer surface of the clutch cap is provided with four clearance grooves in a ring array, and the surface of the clutch plug is symmetrically provided with two latch blocks, and the latch blocks can fit in the clearance grooves.

[0013] Beneficial effects The present invention provides a synchronous belt driven stop-and-go rewinding screen window, which has the following beneficial effects: 1. This synchronous belt-driven, stop-and-go retractable screen is equipped with a first gear, a second gear, a third gear, a retracting assembly, and a handle. Turning the handle drives the synchronous belt to rotate, which in turn drives the first, second, and third gears. The first gear and the retracting assembly are connected to each other, which in turn drives the reel. The handle pulls the end of the screen, allowing the screen to be reeled in and out. The handle can be controlled to stop at any position, making it convenient for the screen to be unfolded to any size.

[0014] 2. The synchronous belt-driven stop type retractable screen window drives the reel to rotate through a synchronous toothed belt, replacing the method in the prior art of driving the reel to rotate by a spring. The handle can be paused at any position, thus effectively avoiding the problem that when closing the retractable screen window, the spring pulls the reel to retract, and at this time, the pulling force generated by the spring is likely to cause the handle to hit the hand.

[0015] 3. For the synchronous belt-driven stop type retractable screen window, since the diameter of the screen roll will change when the reel retracts the screen mesh, in order to prevent the screen mesh from becoming slack, by setting up a retracting assembly and applying torsion to the spring fastening tail with a pre-tension spring, the reel clamped outside the spring fastening tail can rotate adaptively, so that the screen mesh can be tightened, effectively avoiding the screen mesh from becoming slack during the unfolding process and ensuring the isolation effect of the screen mesh.

[0016] 4. When reinstalling the reel after disassembling and cleaning the screen mesh of the synchronous belt-driven stop type retractable screen window, in order to prevent the torsion of the pre-tension spring from disappearing, by setting up an axle sleeve, a first bearing, a positioning spring, a clutch cap and a clutch plug, the hexagonal short rod can be fixed by the mutual engagement of the relief groove of the clutch cap and the pin block of the clutch plug, avoiding the self-rotation of the hexagonal short rod. By fixing the hexagonal short rod, the spring fastener can be fixed, and then it is convenient to rotate the pre-tension spring to apply appropriate torsion to it, thus facilitating the reinstallation operation after the screen mesh is disassembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 2 It is a schematic diagram of the structure after the reel of a synchronous belt-driven stop type retractable screen window proposed by the present invention is removed; Figure 3 It is a schematic diagram of the three-dimensional structure of the left guide rail of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the pulley assembly of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 5 It is an exploded view of the retracting assembly of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the hexagonal sleeve of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the hexagonal short rod of a synchronous belt-driven stop type retractable screen window proposed by the present invention; Figure 8Schematic three-dimensional structure diagram of the right gear box of a synchronous belt-driven stop-and-go winding screen window proposed by the present invention; Figure 9 Schematic three-dimensional structure diagram of the clutch cap and clutch plug of a synchronous belt-driven stop-and-go winding screen window proposed by the present invention.

[0018] In the figure: 1, left guide rail; 2, right guide rail; 3, left gear box; 4, left gear box cover; 5, right gear box; 6, right gear box cover; 7, pulley assembly; 8, first gear; 9, second gear; 10, third gear; 11, synchronous toothed belt; 12, winding assembly; 13, winding drum; 14, screen mesh; 15, handle; 16, limit pulley; 17, pulley seat; 18, limit wheel groove; 19, edge-hiding groove; 20, flat head; 21, hexagonal sleeve; 22, hexagonal bar; 23, spring fastener; 24, spring fastening tail; 25, pre-tightening force spring; 26, clamping socket; 27, hexagonal short rod; 28, shaft core sleeve; 29, first bearing; 30, positioning spring; 31, clutch cap; 32, clutch plug; 33, second bearing; 34, relief groove; 35, pin block. Specific embodiments

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Example 1, please refer to Figures 1-9The present invention provides a technical solution: a synchronous belt driven stop-and-go winding screen window, comprising a left guide rail 1 and a right guide rail 2, a left gear box 3 fixedly mounted on the end portion of the left guide rail 1, a left gear box cover 4 detachably mounted on the surface of the left gear box 3, a right gear box 5 fixedly mounted on the end portion of the right guide rail 2, a right gear box cover 6 detachably mounted on the surface of the right gear box 5, the surfaces of the left guide rail 1 and the right guide rail 2 are both slidably connected with a pulley assembly 7, the inner sides of the left gear box 3 and the left guide rail 1, as well as the right gear box 5 and the right guide rail 2 are respectively rotatably connected with a first gear 8, a second gear 9 and a third gear 10, and the outer surfaces of the first gear 8, the second gear 9 and the third gear 10 are jointly sleeved with a synchronous toothed belt 11 engaged with the synchronous toothed belt 11, wherein the surface of the synchronous toothed belt 11 is provided with teeth, which is not shown in the figure, and the synchronous toothed belt 11 is fixedly clamped on the lower end of the pulley assembly 7, the rotation of the two first gears 8 The end transmission is connected with a winding component 12, and the outer surface of the winding component 12 is fixedly sleeved with a reel 13, and the outer surface of the reel 13 is fixedly connected with a gauze 14, and the end of the gauze 14 is fixedly connected with a handle 15. The two ends of the handle 15 are fixedly installed together with the two pulley assemblies 7 through the connecting base. By setting the first gear 8, the second gear 9, the third gear 10, the winding component 12, the handle 15, etc., the synchronous toothed belt 11 can be driven to rotate by turning the handle 15. The rotation of the synchronous toothed belt 11 can drive the first gear 8, the second gear 9 and the third gear 10 to rotate. The first gear 8 and the winding component 12 are connected to each other through the transmission, which can drive the reel 13 to rotate and cooperate with the handle 15 to pull the end of the gauze 14, so that the gauze 14 can be wound and unfolded, and the handle 15 can be controlled to stop at any position, which provides convenience for unfolding the screen to any size.

[0021] The reel 13 is driven to rotate by the synchronous toothed belt 11, instead of using a spring to drive the reel 13 to rotate in the prior art. The handle 15 can be paused at any position, thereby effectively avoiding the problem that when the screen is closed and rolled up, the spring pulls the reel 13 to rewind. At this time, the tension generated by the spring can easily cause the handle 15 to hit the hand.

[0022] The pulley assembly 7 includes two limiting pulleys 16 and a pulley seat 17. A through groove is provided on the surface of the pulley seat 17. Multiple limiting pulleys 16 are rotatably connected in the through groove. The surfaces of the left guide rail 1 and the right guide rail 2 are provided with a limiting wheel groove 18. The limiting pulley 16 is rollingly installed in the limiting wheel groove 18. By setting the limiting pulley 16, the pulley seat 17 and the limiting wheel groove 18, and utilizing the limiting pulley 16 to roll in the limiting wheel groove 18, the movement of the pulley seat 17 can be facilitated, thereby facilitating the movement of the handle 15.

[0023] The surfaces of the left guide rail 1 and the right guide rail 2 are both provided with edge - hiding grooves 19. Both sides of the screen 14 extend into the edge - hiding grooves 19. By setting the edge - hiding grooves 19, the two sides of the screen 14 can be limited, effectively preventing mosquitoes from passing through the two sides of the screen 14.

[0024] One - end of the first gear 8 in the left gear box 3 is provided with a flat - head slot, and the end of the first gear 8 in the right gear box 5 is provided with a hexagon slot. The winding assembly 12 includes a flat - head 20, a hexagon sleeve 21, a hexagon bar 22, a spring fastener 23, a spring - fastening tail 24, a pre - tightening spring 25, a clamping socket 26 and a hexagon short rod 27. The flat - head 20 is detachably inserted and installed on the surface of the first gear 8 in the left gear box 3. The hexagon sleeve 21 is fixedly connected to the surface of the flat - head 20. One end of the hexagon bar 22 is fixedly clamped in the hexagon sleeve 21, and the other end of the hexagon bar 22 is fixedly clamped on the inner wall of the spring fastener 23. One end of the pre - tightening spring 25 is fixedly connected to the surface of the spring fastener 23, and the other end of the pre - tightening spring 25 is fixedly connected to the end of the spring - fastening tail 24. And the outer side of the spring - fastening tail 24 is clamped on the inner wall of the winding drum 13, and the inner side of the spring - fastening tail 24 is sleeved on the outer side of the hexagon bar 22. The clamping socket 26 is fixedly clamped on the left end of the winding drum 13, and the inner side of the clamping socket 26 and the outer side of the flat - head 20 form a rotational connection. One end of the hexagon short rod 27 is clamped and fixed at the end of the spring fastener 23, and the other end of the hexagon short rod 27 is clamped and fixed on the surface of the first gear 8 in the right gear box 5. By setting the clamping socket 26, the end of the winding drum 13 can be limited, effectively preventing the end of the winding drum 13 from rubbing against the left gear - box cover 4.

[0025] When the winding drum 13 winds the screen 14, the diameter of the wound screen 14 will change. To prevent the screen 14 from becoming slack, by setting the winding assembly 12, the pre - tightening spring 25 applies a torsional force to the spring - fastening tail 24, enabling the winding drum 13 clamped on the outer side of the spring - fastening tail 24 to rotate adaptively, so that the screen can be tightened, effectively preventing the screen 14 from becoming slack during the unfolding process and ensuring the isolation effect of the screen 14.

[0026] Embodiment 2 includes Embodiment 1, and on the basis of Embodiment 1, the present invention provides a technical solution: A shaft - core sleeve 28 is sleeved on the outer surface of the hexagon short rod 27. Two first bearings 29 are arranged on the inner side of the shaft - core sleeve 28, and the two first bearings 29 are sleeved on the outer surface of the hexagon short rod 27. A positioning spring 30 is arranged between the two first bearings 29. A clutch cap 31 is integrally formed on the surface of the right gear - box cover 6. A clutch plug 32 is integrally formed on the outer surface of the hexagon short rod 27, and the clutch plug 32 can be fitted and clamped with the clutch cap 31.

[0027] A second bearing 33 is provided inside the clutch cap 31, and the inner side of the second bearing 33 is sleeved on the outer surface of the hexagonal short rod 27. By providing the second bearing 33, the friction between the clutch cap 31 and the hexagonal short rod 27 can be effectively reduced.

[0028] Four relief grooves 34 are formed on the outer surface of the clutch cap 31 in a circular array. Two pin blocks 35 are symmetrically arranged on the surface of the clutch plug 32, and the pin blocks 35 can be engaged with the relief grooves 34.

[0029] After the screen mesh 14 has been used for a period of time, it needs to be cleaned. When reinstalling the reel 13 after disassembling and cleaning the screen mesh 14, to avoid the torsion of the pre-tension spring 25 disappearing, by providing the shaft core sleeve 28, the first bearing 29, the positioning spring 30, the clutch cap 31 and the clutch plug 32, and using the relief grooves 34 of the clutch cap 31 and the pin blocks 35 of the clutch plug 32 to be engaged and clamped with each other, the hexagonal short rod 27 can be fixed, preventing the hexagonal short rod 27 from rotating on its own. By fixing the hexagonal short rod 27, the spring fastener 23 can be fixed, and then it is convenient to rotate the pre-tension spring 25 to apply appropriate torsion to it, thus facilitating the reinstallation operation after the screen mesh 14 is disassembled.

[0030] When the right gear box 5 and the right gear box cover 6 are installed together, the relief grooves 34 of the clutch cap 31 will be separated from the pin blocks 35 of the clutch plug 32. At this time, the clutch cap 31 will not affect the free rotation of the clutch plug 32, thus ensuring the normal operation of the reel 13.

[0031] Working principle: When the synchronous belt-driven stop-type retractable screen window is in use, by pulling the handle 15, a pulling force can be applied to one end of the screen mesh 14. When the handle 15 moves, the pulley assembly 7 will move accordingly. By using the pulley assembly 7 to drive the synchronous toothed belt 11 to rotate, the first gear 8, the second gear 9 and the third gear 10 can be rotated synchronously. By using the rotation of the first gear 8, the flat head 20 and the hexagonal short rod 27 can be rotated synchronously. By using the rotation of the flat head 20, the hexagonal sleeve 21 can be rotated, thus driving the hexagonal rod 22 to rotate. At the same time, by using the rotation of the hexagonal short rod 27, the spring fastener 23 can be rotated, thus driving the pre-tension spring 25 and the spring fastening tail 24 to rotate. By the rotation of the spring fastening tail 24 and the pre-tension spring 25 applying torsion to the spring fastening tail 24, the reel 13 can be driven to rotate, thus realizing the retraction and deployment of the screen mesh 14, and the handle 15 can be controlled to stop at any position, providing convenience for the screen window to be deployed to any size.

[0032] In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally, the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A synchronous belt-driven stop-type winding screen window, comprising a left guide rail (1) and a right guide rail (2), characterized in that: The end of the left guide rail (1) is fixedly installed with a left gear box (3), and the surface of the left gear box (3) is detachably installed with a left gear box cover (4). The end of the right guide rail (2) is fixedly installed with a right gear box (5), and the surface of the right gear box (5) is detachably installed with a right gear box cover (6). Pulley assemblies (7) are slidably connected to the surfaces of the left guide rail (1) and the right guide rail (2). The inner sides of the left gear box (3) and the left guide rail (1), as well as the right gear box (5) and the right guide rail (2), are respectively rotatably connected with a first gear (8), a second gear (9) and a third gear (10). And a synchronous toothed belt (11) is sleeved and meshed on the outer surfaces of the first gear (8), the second gear (9) and the third gear (10). And the synchronous toothed belt (11) is fixedly clamped at the lower end of the pulley assembly (7). The rotating ends of the two first gears (8) are drivingly connected with a winding assembly (12). A winding drum (13) is fixedly sleeved on the outer surface of the winding assembly (12). A wire mesh (14) is fixedly connected to the outer surface of the winding drum (13). The end of the wire mesh (14) is fixedly connected with a handle (15). The two ends of the handle (15) are respectively fixedly installed with the two pulley assemblies (7) through connecting bases.

2. A synchronous belt-driven stop-type winding screen window according to claim 1, characterized in that: The pulley assembly (7) includes two limiting pulleys (16) and a pulley seat (17). A through groove is formed on the surface of the pulley seat (17). A plurality of limiting pulleys (16) are rotatably connected in the through groove. Limiting wheel grooves (18) are formed on the surfaces of the left guide rail (1) and the right guide rail (2). The limiting pulleys (16) are rollingly installed in the limiting wheel grooves (18).

3. A synchronous belt-driven stop-type winding screen window according to claim 1, characterized in that: Hiding edge grooves (19) are formed on the surfaces of the left guide rail (1) and the right guide rail (2). Both sides of the wire mesh (14) extend into the hiding edge grooves (19).

4. A synchronous belt-driven stop-on-demand winding screen window according to claim 1, characterized in that: A flat slot is arranged at the end of the first gear (8) in the left gear box (3), and a hexagonal slot is arranged at the end of the first gear (8) in the right gear box (5).

5. A synchronous belt-driven stop-type winding screen window according to claim 4, characterized in that: The coiling assembly (12) includes a flat head (20), a hexagon socket (21), a hexagon bar (22), a spring fastener (23), a spring fastening tail (24), a pre-tightening spring (25), a clamping socket head (26) and a hexagon short bar (27). The flat head (20) is detachably inserted and installed on the surface of the first gear (8) in the left gear box (3). The hexagon socket (21) is fixedly connected to the surface of the flat head (20). One end of the hexagon bar (22) is fixedly clamped in the hexagon socket (21), and the other end of the hexagon bar (22) is fixedly clamped on the inner wall of the spring fastener (23). One end of the pre-tightening spring (25) is fixedly connected to the surface of the spring fastener (23), and the other end of the pre-tightening spring (25) is fixedly connected to the end of the spring fastening tail (24). And the outer side of the spring fastening tail (24) is clamped on the inner wall of the reel (13), and the inner side of the spring fastening tail (24) is sleeved on the outer side of the hexagon bar (22). The clamping socket head (26) is fixedly clamped at the left end of the reel (13), and the inner side of the clamping socket head (26) is rotatably connected to the outer side of the flat head (20). One end of the hexagon short bar (27) is clamped and fixed at the end of the spring fastener (23), and the other end of the hexagon short bar (27) is clamped and fixed on the surface of the first gear (8) in the right gear box (5).

6. The synchronous belt-driven stop-type winding screen window according to claim 5, wherein: An axle core sleeve (28) is sleeved on the outer surface of the hexagon short bar (27). Two first bearings (29) are arranged inside the axle core sleeve (28), and the two first bearings (29) are sleeved on the outer surface of the hexagon short bar (27). A positioning spring (30) is arranged between the two first bearings (29). A clutch cap (31) is integrally formed on the surface of the right gear box cover (6). A clutch plug (32) is integrally formed on the outer surface of the hexagon short bar (27), and the clutch plug (32) can be fitted and clamped with the clutch cap (31).

7. A synchronous belt-driven stop-type winding screen window according to claim 6, characterized in that: A second bearing (33) is arranged inside the clutch cap (31), and the inner side of the second bearing (33) is sleeved on the outer surface of the hexagon short bar (27).

8. A synchronous belt-driven stop-type winding screen window according to claim 6, characterized in that: Four relief grooves (34) are formed in an annular array on the outer surface of the clutch cap (31). Two pin blocks (35) are symmetrically arranged on the surface of the clutch plug (32), and the pin blocks (35) can be mutually fitted with the relief grooves (34).

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