Sliding wheel assembly of sliding airtight window and sliding airtight window

Abstract

The invention discloses a sliding airtight window pulley assembly and a sliding airtight window, and belongs to the technical field of door and window accessories. The pulley assembly comprises a base provided with a first through groove; the pull rod is slidably arranged on the base and is provided with a guide chute; the sliding block frame is provided with a pulley, one of the base and the sliding block frame is provided with an arc convex surface, the other one of the base and the sliding block frame is provided with an acting surface abutting against the arc convex surface, and the axis of the arc convex surface is parallel to the axis of the pulley; the connecting guide rod is mounted on the sliding block frame and penetrates through the first through groove and the guide chute; the sliding block frame and the base can relatively swing in the circumferential direction of the arc convex face. When side pressing and swinging of the pulley are achieved, relative movement is completed through cooperation between the arc convex face and the acting face, only the pull rod, the base and the sliding frame are used as main body parts, the number is small, and assembling is convenient. In addition, the two functions are compressed on the same structure, the height of the pulley assembly is reduced, and the overall compactness is achieved.

Description

Technical Field

[0001] This invention relates to the field of door and window accessories technology, and in particular to a sliding airtight window pulley assembly and a sliding airtight window. Background Technology

[0002] The sliding airtight window uses a pulley system that applies lateral pressure when the door or window is closed to achieve a tight seal. This pulley system includes a pull rod, a base, a slider, and a pulley bracket. When the pull rod is pulled, the base slides relative to the slider, or in other words, the slider and pulley bracket slide relative to the base, achieving the lateral pressure process. Simultaneously, the pulley bracket can swing around an axis relative to the slider, achieving self-balancing of the pulley system. The sliding of the slider and the swinging of the pulley bracket are relatively independent, resulting in a large number of main components and a relatively complex assembly process. Summary of the Invention

[0003] The purpose of this invention is to provide a sliding airtight window pulley assembly and a sliding airtight window to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: a push-pull airtight window pulley assembly, comprising: a base with a first through groove; a pull rod slidably disposed on the base, the pull rod having a guide groove; a slider frame with a pulley mounted thereon, one of the base and the slider frame having an arcuate convex surface, and the other having an action surface that abuts against the arcuate convex surface, the axis of the arcuate convex surface being parallel to the axis of the pulley; a connecting guide rod, mounted on the slider frame and passing through the first through groove and the guide groove; the slider frame and the base can swing relative to each other circumferentially along the arcuate convex surface, and when the pull rod slides relative to the base, the base and the slider frame slide relative to each other axially along the arcuate convex surface.

[0005] This technical solution has at least the following beneficial effects: When the pulley achieves lateral pressure and oscillation, the relative movement is accomplished through the cooperation between the arcuate convex surface and the working surface. The main components are only the tie rod, base, and sliding frame, which are few in number and easy to assemble. Furthermore, the compression of both functions is achieved on the same structure, reducing the height of the pulley assembly and achieving overall compactness.

[0006] As a further improvement to the above technical solution, the working surface is a V-shaped surface, a polygonal surface, or a concave arc surface.

[0007] As a further improvement to the above technical solution, the working surface is a concave arc surface whose axis coincides with the axis of the convex arc surface.

[0008] As a further improvement to the above technical solution, a retainer is installed between the arcuate convex surface and the arcuate concave surface, and a ball is rolled inside the retainer. A portion of the ball passes through one side of the retainer and abuts against the arcuate convex surface, while the other portion of the ball passes through the other side of the retainer and abuts against the arcuate concave surface.

[0009] As a further improvement to the above technical solution, both the arcuate convex surface and the arcuate concave surface are embedded with gaskets that abut against the ball.

[0010] As a further improvement to the above technical solution, the connecting guide rod passes through the base, and two retainers are provided, with the two retainers respectively distributed on both sides of the connecting guide rod.

[0011] As a further improvement to the above technical solution, the two cages are circumferentially spaced along the arcuate convex surface.

[0012] As a further improvement to the above technical solution, the sliding frame includes a frame body and two clamping plates. The two clamping plates are respectively installed on both sides of the frame body along the axial direction of the arcuate convex surface. An installation groove for the retainer to be accommodated is formed between the two clamping plates and the frame body. The two clamping plates respectively restrict the positions of the two ends of the retainer. The two ends of the pulley are respectively installed on the two clamping plates.

[0013] As a further improvement to the above technical solution, the slider frame is equipped with an anti-sway wheel, the connecting guide rod is a pulley rivet, the pulley rivet rivets the anti-sway wheel and the slider frame, and one end of the pulley rivet is attached to the pull rod.

[0014] A sliding airtight window, comprising the sliding airtight window pulley assembly described in any one of the above. Attached Figure Description

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a top view of the exploded structure of Embodiment 1 of the present invention; Figure 3 This is a top view of the exploded structure between the base and the sliding frame in Embodiment 1 of the present invention; Figure 4 This is a bottom view of the exploded structure of Embodiment 1 of the present invention; Figure 5 This is a bottom view of the exploded structure between the base and the sliding frame in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the cage installation in Embodiment 1 of the present invention; Figure 7 This is an exploded view of the cage and balls in Embodiment 1 of the present invention; Figure 8 This is a partial cross-sectional structural diagram of Embodiment 1 of the present invention; Figure 9 This is a cross-sectional view of the vertical plane along the sliding direction of the tie rod in Embodiment 1 of the present invention. Figure 10 This is a cross-sectional schematic diagram of a vertical plane along the axial direction of the convex arc surface in Embodiment 1 of the present invention. Figure 11 This is a schematic diagram illustrating the fit between the convex and concave arc surfaces in Embodiment 1 of the present invention. Figure 12 This is a schematic diagram illustrating the fit between the convex and concave arc surfaces in other embodiments of the present invention; Figure 13 This is a schematic diagram illustrating the fit between the arcuate convex surface and the plane in other embodiments of the present invention; Figure 14 This is a schematic diagram illustrating the fit between the arc-shaped convex surface and the V-shaped surface in other embodiments of the present invention; Figure 15 This is a schematic diagram illustrating the fit between the arcuate convex surface and the polygonal surface in other embodiments of the present invention; Figure 16 This is a schematic diagram of the overall structure of Embodiment 2 of the present invention; Figure 17 This is a top view of the exploded structure of Embodiment 2 of the present invention; Figure 18 This is a top view of the exploded structure between the base and the sliding frame in Embodiment 2 of the present invention; Figure 19 This is a bottom view of the exploded structure of Embodiment 2 of the present invention; Figure 20 This is a bottom view of the exploded structure between the base and the sliding frame in Embodiment 2 of the present invention; Figure 21 This is a schematic diagram of the cage installation in Embodiment 2 of the present invention; Figure 22 This is an exploded view of the cage and balls in Embodiment 2 of the present invention; Figure 23 This is a partial cross-sectional structural diagram of Embodiment 2 of the present invention; Figure 24 This is a cross-sectional view of the vertical plane along the sliding direction of the tie rod in Embodiment 2 of the present invention; Figure 25 This is a cross-sectional schematic diagram of a vertical plane along the axial direction of the convex arc surface in Embodiment 2 of the present invention.

[0016] 100. Base; 101. First through groove; 102. Arc concave surface; 103. Slide groove; 104. Limiting block; 105. Needle roller; 110. First washer; 111. Second through hole; 120. Flat surface; 130. V-shaped surface; 140. Polygonal surface; 200. Tie rod; 210. Guide groove; 300. Sliding frame; 301. Arc convex surface; 302. Mounting groove; 303. Frame body; 304. Clamping plate; 310. Pulley; 320. Cage; 321. Ball bearing; 330. Second washer; 340. Anti-sway wheel; 400. Connecting guide rod; 410. Roller sleeve; 500. Pressure plate; 600. Clearance groove. Detailed Implementation

[0017] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0018] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0019] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0020] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0021] Example 1: Reference Figure 1-11 A sliding airtight window pulley assembly includes a base 100, a pull rod 200, a sliding frame 300, and a connecting guide rod 400.

[0022] The top of the base 100 has a groove 103, with both ends of the groove 103 extending through both sides of the base 100. The pull rod 200 is slidably disposed in the groove 103. Multiple limiting blocks 104 are provided on the sidewalls of the groove 103. The multiple limiting blocks 104 and the bottom of the groove 103 together restrict the pull rod 200, thereby achieving relative sliding between the pull rod 200 and the base 100. In this embodiment, two limiting blocks 104 are provided on each of the two sidewalls of the groove 103, and the limiting blocks 104 are integrally formed with the base 100. In other embodiments, multiple limiting blocks 104 may not be provided; instead, the groove 103 may be designed as a T-shape or a closed opening.

[0023] At least two rollers 105 are also rotatably arranged on the two opposite sidewalls of the slide groove 103. The sidewalls of the rollers 105 abut against the sidewalls of the pull rod 200, allowing the pull rod 200 to slide relative to the base 100 through the rolling of the rollers 105, reducing friction and improving the smoothness of relative sliding. In other embodiments, the sidewalls of the slide groove 103 may also be provided with three, four, or five or more rollers 105.

[0024] The base 100 has a first through groove 101 in the middle of the bottom wall of the slide groove 103. The pull rod 200 has a guide groove 210. The line connecting the two ends of the guide groove 210 has a certain angle with the sliding direction of the pull rod 200. The guide groove 210 can be an arc groove or a straight groove.

[0025] The bottom of the base 100 has a concave arc surface 102. The top of the sliding frame 300 has a convex arc surface 301. The concave arc surface 102 and the convex arc surface 301 fit together and can slide relative to each other in the axial and circumferential directions. Two pulleys 310 are installed at both ends of the sliding frame 300. The axis of the pulleys 310 is perpendicular to the pulling direction of the pull rod 200, and the axes of the concave arc surface 102 and the convex arc surface 301 are parallel to the axis of the pulleys 310.

[0026] The connecting guide rod 400 is connected to the sliding frame 300, and the connecting guide rod 400 passes through the first through groove 101 and the guide inclined groove 210. Specifically, the connecting guide rod 400 is a pulley rivet. The head of the pulley rivet overlaps the side of the pull rod 200 away from the base 100, and a rolling sleeve 410 is fitted in the middle of the pulley rivet. The rolling sleeve 410 passes through the guide inclined groove 210 and the first through groove 101, and can roll around the axis of the pulley rivet, thereby reducing the friction of the pulley rivet sliding in the guide inclined groove 210 and the first through groove 101. The tail of the pulley rivet passes through the sliding frame 300 and is equipped with an anti-sway wheel 340. The axis of the anti-sway wheel 340 coincides with the axis of the pulley rivet, and the axis of the anti-sway wheel 340 is perpendicular to the axis of the pulley 310. The anti-sway wheel 340 and the sliding frame 300 are riveted together and fixed by the pulley rivet.

[0027] When the pull rod 200 is pulled left or right, the pull rod 200 slides relative to the base 100. Under the action of the guide groove 210, the base 100 can be driven to slide back and forth relative to the sliding frame 300 in a direction perpendicular to the pulling direction of the pull rod 200. At this time, the arc concave surface 102 and the arc convex surface 301 slide relative to each other axially, realizing the lateral pressure action. When it is necessary to balance with the guide rail, the sliding frame 300 and the connecting guide rod 400 swing relative to the base 100, with the swing center line located below the sliding frame 300. At this time, the arc concave surface 102 and the arc convex surface 301 slide relative to each other circumferentially, realizing the floating balance action of the sliding frame 300. It is understandable that there is a certain gap between the outer side of the roller sleeve 410 and the side wall of the first through groove 101 and the side wall of the guide groove 210, allowing the connecting guide rod 400 to have a certain swing space. If the up-and-down swing amplitude of the single pulley 310 is set at about 0.5 mm, the superposition of the left and right sides can generate a mutual floating distance of about 1 mm to correct the guide rail.

[0028] Compared to previous methods that used groove structures and pivots to achieve relative sliding and oscillation adjustment functions respectively, this embodiment eliminates the pivot. Firstly, it significantly shortens the distance between the sliding frame 300 and the base 100. The lower support height makes the sliding of doors and windows more stable and reliable, and the minimal height reduces the installation space required for doors and windows. The shallow groove depth saves materials, and the narrower frame improves the aesthetics of the doors and windows. Secondly, the large relative oscillation radius and contact area between the convex arc surface 301 and the concave arc surface 102, along with their tight fit, greatly improves the long-term stability of the pendulum balance, ensuring the stability of the door and window sliding operation. Furthermore, most components are assembled through stacking, simplifying assembly and saving assembly costs.

[0029] Furthermore, a retainer 320 and a ball bearing 321 are provided between the concave arc surface 102 and the convex arc surface 301.

[0030] The convex surface 301 has mounting grooves 302 on both the left and right sides of the connecting guide rod 400, and a retainer 320 is placed in each of the two mounting grooves 302. It is understood that the bottom wall of the mounting groove 302 and the retainer 320 are both curved to fit the shape of the convex surface 301. Multiple balls 321 are rolled within the retainer 320. The thickness of the retainer 320 is less than the diameter of the balls 321, so that the top of the balls 321 protrudes from the upper side of the retainer 320 and abuts against the concave surface 102, and the bottom of the balls 321 protrudes from the lower side of the retainer 320 and abuts against the bottom wall of the mounting groove 302. This makes the relative sliding of the concave surface 102 and the convex surface 301 smoother, improving the smoothness of the sliding frame 300's sliding and swinging relative to the base 100. Preferably, the two retainers 320 are circumferentially spaced along the arcuate convex surface 301, that is, the two retainers 320 are separated by the vertical plane containing the axis of the arcuate convex surface 301. The length of the retainer 320 in the axial direction is greater than its width in the circumferential direction, which can greatly ensure the continuity and stability of the lateral pressure. The two retainers 320 distributed on both sides of the connecting guide rod 400 form a split retainer 320 structure, which allows for greater flexibility in the circumferential swing of both sides. In other embodiments, the two retainers 320 may also be axially spaced along the arcuate convex surface 301, that is, the two retainers 320 are separated by the vertical plane containing the arcuate convex surface 301 perpendicular to the diameter of the connecting guide rod 400. In other embodiments, the two retainers 320 may also be separated by the vertical plane containing the diagonal lines.

[0031] In other embodiments, the ball bearing 321 may also be directly rolled on the concave surface 102 or the convex surface 301.

[0032] Furthermore, a first washer 110 is provided between the concave surface 102 and the ball 321. The first washer 110 is fixedly connected to the base 100, and the base 100 has a first groove for the first washer 110 to be fitted and installed. A second through hole 111 is provided in the middle of the first washer 110 for the connecting guide rod 400 to pass through, and the area of ​​the second through hole 111 covers the area of ​​the first through groove 101. It can be understood that the shape of the first washer 110 is arc-shaped to adapt to the concave surface 102. A second washer 330 is provided between the convex surface 301 and the ball 321. Two second washer 330s are provided and are placed in two mounting grooves 302 respectively. The two second washer 330s are located on both sides of the connecting guide rod 400, and the bottom of the second washer 330 is arc-shaped to adapt to the bottom of the mounting groove 302. The top of the ball bearing 321 protrudes from the retainer 320 and abuts against the first washer 110, while the bottom of the ball bearing 321 protrudes from the retainer 320 and abuts against the second washer 330. Both the first washer 110 and the second washer 330 are made of steel to ensure wear resistance. In other embodiments, only the first washer 110 may be provided without the second washer 330, or only the second washer 330 may be provided without the first washer 110.

[0033] This embodiment also provides a sliding airtight window, including a sliding airtight window pulley assembly. The pulley assembly is installed on the sliding door / window, and the door / window frame is provided with a guide rail. The pulley 310 slides on the guide rail. By applying a pushing or pulling force, the sliding door / window is moved. At this time, the pulley 310 slides on the guide rail, thereby realizing the sliding and lateral pressure of the sliding door / window.

[0034] Reference Figure 11 It is understood that the concave arc surface 102 at the bottom of the base 100 acts as the working surface of the base 100 and interacts with the convex arc surface 301 to achieve the functions of lateral pressure and left-right swing adjustment. In other embodiments, the working surface can also be a plane 120, a V-shaped surface 130, or a polygonal surface 140.

[0035] Reference Figure 12 When the working surface is plane 120, the arc-shaped convex surface 301 can roll or rub and swing on plane 120, providing the adjustable ability for the base 100 to swing left and right or slide circumferentially relative to the sliding frame 300. Simultaneously, the arc-shaped convex surface 301 can slide axially relative to plane 120, and the base 100 slides axially relative to the sliding frame 300, achieving the function of lateral pressure. In this embodiment, the axes of the arc-shaped concave surface 102 and the arc-shaped convex surface 301 coincide. (Refer to...) Figure 13In other embodiments, the axes of the concave surface 102 and the convex surface 301 may not coincide. The axis of the concave surface 102 is offset away from the axis of the convex surface 301, so that the convex surface 301 can achieve a certain mixed adjustment movement of rolling oscillation and circumferential relative sliding relative to the concave surface 102, and has the ability to center positioning.

[0036] Reference Figure 14 When the working surface is the V-shaped surface 130, at least two points of the arc convex surface 301 are in contact with the V-shaped surface 130, which restricts the position of the arc convex surface 301. The arc convex surface 301 can rub and swing on the V-shaped surface 130, and has the adjustment ability of the base 100 relative to the sliding frame 300 in the circumferential direction. At the same time, the arc convex surface 301 can slide relative to the V-shaped surface 130 in the axial direction, and the base 100 relative to the sliding frame 300 slides in the axial direction to realize the function of lateral pressure.

[0037] Reference Figure 15 When the working surface is polygonal surface 140, the cross-section of polygonal surface 140 is a progressively bent polygonal line. Polygonal surface 140 is like multiple continuous outer surfaces of a polygonal prism. At least three points of the arc convex surface 301 are in contact with polygonal surface 140, which restricts the position of arc convex surface 301. Arc convex surface 301 can rub and swing on polygonal surface 140, and has the adjustment ability of base 100 relative to sliding frame 300 in the circumferential direction. At the same time, arc convex surface 301 can slide relative to polygonal surface 140 in the axial direction, and base 100 relative to sliding frame 300 in the axial direction to realize the function of lateral pressure.

[0038] Example 2: Reference Figure 16-25 The difference between this embodiment and Embodiment 1 is that the sliding structure of the pull rod 200 and the base 100 is different, the connecting guide rod 400 is different, and the positions of the arc concave surface 102 and the arc convex surface 301 are different.

[0039] Specifically, in this embodiment, the top of the base 100 is provided with a groove 103 for the pull rod 200 to slide, and the top of the base 100 is provided with a pressure plate 500 for restricting the pull rod 200 from dislodging from the groove 103 along the opening direction. The pressure plate 500 and the base 100 form a U-shaped groove structure for the pull rod 200 to slide stably.

[0040] In this embodiment, two connecting guide rods 400 are provided, each fixed to the top of the sliding frame 300, and distributed on both sides of the arc-shaped convex surface 301. Two first through slots 101 and two guide grooves are also provided. The first through slot 101 is formed on the pressure plate 500, and the base 100 has a clearance slot 600 for the connecting guide rods 400 to pass through. The connecting guide rod 400 passes sequentially through the clearance slot 600, the guide groove 210, and the first through slot 101. A rivet is riveted to the end of the connecting guide rod 400 away from the sliding frame 300, and the rivet is located in the first through slot 101. An inner bushing is fitted onto the connecting guide rod 400, and a roller sleeve 410 is fitted outside the inner bushing, passing through the guide groove 210 and the clearance slot 600.

[0041] In another embodiment, the first through groove 101 may also be provided on the sliding frame 300, and the pressure plate 500 is provided with a relief groove 600 for the connecting guide rod 400 to pass through, and one end of the connecting guide rod 400 passing through the pressure plate 500 overlaps the pressure plate 500.

[0042] In this embodiment, the convex arc surface 301 is provided at the bottom of the base 100, and the concave arc surface 102 is provided at the top of the sliding frame 300. Only one retainer 320, one first pad 110, and one second pad 330 are provided. The contact surface is large and complete, making the relative sliding and swaying of the base 100 and the sliding frame 300 more stable. Two anti-sway wheels 340 are installed at the bottom of the sliding frame 300.

[0043] The sliding frame 300 includes a frame body 303 and two clamping plates 304 respectively installed on the front and rear sides of the frame body 303. The top surface of the frame body 303 and the opposite surfaces of the two clamping plates 304 form mounting grooves 302 for the second gasket 330 and the retainer 320 to be inserted. An arc-shaped concave surface 102 is located at the middle of the top of the frame body 303. The left and right sides of the clamping plates 304 protrude from the frame body 303. The two ends of the shafts of the pulleys 310 are respectively installed at the ends of the two clamping plates 304 on the same side. The two pulleys 310 are located on the left and right sides of the frame body 303.

[0044] In this embodiment, side grooves are connected to both sides of the first groove, and the retainer 320 has edges extending outwards on both sides, which are respectively accommodated in the corresponding side grooves. The side edges can limit the two ends of the second pad 330. The arc concave surface 102 coincides with the two sides of the frame body 303 on both axial sides, and the retainer 320 and the second pad 330 are respectively limited at both ends of the axial direction by the clamping plates 304 on both sides. The axial length of the retainer 320 is shorter than the distance between the two clamping plates 304, so that the retainer 320 can slide axially relative to the frame body 303, which can improve the smoothness of lateral pressure. In other embodiments, the axial length of the retainer 320 is also the same as the distance between the two clamping plates 304, and the retainer 320 is fixed relative to the frame body 303.

[0045] When the pull rod 200 is pulled left or right, the pull rod 200 slides relative to the base 100. Under the action of the guide groove 210, the base 100 can be driven to slide back and forth relative to the sliding frame 300 in a direction perpendicular to the pulling direction of the pull rod 200. At this time, the arc concave surface 102 and the arc convex surface 301 slide relative to each other axially, realizing the lateral pressure action. When it is necessary to balance with the guide rail, the sliding frame 300 and the connecting guide rod 400 swing relative to the base 100, with the swing center line above the sliding frame 300. At this time, the arc concave surface 102 and the arc convex surface 301 slide relative to each other circumferentially, realizing the floating balance action of the sliding frame 300. It is understandable that there are certain gaps between the outer side of the roller sleeve 410 and the side wall of the clearance groove 600 and the side wall of the guide groove 210, as well as between the rivet piece and the side wall of the first through groove 101, which allows the connecting guide rod 400 to have a certain swing space. If the up-and-down swing amplitude of the single-sided pulley 310 is set at about 0.5 mm, then the superposition of the left and right sides can generate a mutual floating distance of about 1 mm to correct the guide rail.

[0046] It is understood that the concave surface 102 at the top of the frame body 303 acts as the working surface of the sliding frame 300, interacting with the convex surface 301 to achieve lateral pressure and left-right swing adjustment functions. In other embodiments, the working surface can also be a plane 120, a V-shaped surface 130, or a polygonal surface 140.

[0047] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A sliding airtight window pulley assembly, characterized in that, include: The base has a first through slot; A pull rod is slidably mounted on the base, and the pull rod is provided with a guide groove; A slider frame is equipped with pulleys. One of the base and the slider frame is provided with an arcuate convex surface, and the other is provided with an action surface that abuts against the arcuate convex surface. The axis of the arcuate convex surface is parallel to the axis of the pulley. A connecting guide rod is installed on the slider frame and passes through the first through groove and the guide groove; The slider frame and the base can swing relative to each other circumferentially along the arc convex surface. When the pull rod slides relative to the base, the base and the slider frame slide relative to each other axially along the arc convex surface.

2. The sliding airtight window pulley assembly according to claim 1, characterized in that: The working surface is a V-shaped surface, a polygonal surface, or a concave arc surface.

3. The sliding airtight window pulley assembly according to claim 2, characterized in that: The working surface is a concave arc surface whose axis coincides with the axis of the convex arc surface.

4. The sliding airtight window pulley assembly according to claim 3, characterized in that: A retainer is installed between the convex and concave arc surfaces. A ball bearing is rolled inside the retainer. A portion of the ball bearing passes through one side of the retainer and abuts against the convex arc surface, while the other portion of the ball bearing passes through the other side of the retainer and abuts against the concave arc surface.

5. The sliding airtight window pulley assembly according to claim 4, characterized in that: Both the convex and concave arc surfaces are fitted with pads that abut against the ball bearings.

6. The sliding airtight window pulley assembly according to claim 4, characterized in that: The connecting guide rod passes through the base, and there are two retainers, which are respectively distributed on both sides of the connecting guide rod.

7. The sliding airtight window pulley assembly according to claim 6, characterized in that: The two cages are circumferentially spaced along the convex arc surface.

8. The sliding airtight window pulley assembly according to claim 4, characterized in that: The sliding frame includes a frame body and two clamping plates. The two clamping plates are respectively installed on both sides of the frame body along the axial direction of the arcuate convex surface. An installation groove for the retainer to be accommodated is formed between the two clamping plates and the frame body. The two clamping plates respectively restrict the positions of the two ends of the retainer. The two ends of the pulley are respectively installed on the two clamping plates.

9. The sliding airtight window pulley assembly according to claim 1, characterized in that: The slider frame is equipped with an anti-sway wheel, and the connecting guide rod is a pulley rivet. The pulley rivet rivets rivet the anti-sway wheel and the slider frame, and one end of the pulley rivet overlaps the pull rod.

10. A sliding airtight window, characterized in that, Includes a sliding airtight window pulley assembly as described in any one of claims 1-9.

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