A pulley assembly for folding doors and windows

Abstract

This utility model provides a pulley assembly for folding doors and windows, relating to the field of folding window technology. It includes an adjustment kit adapted for installation on doors and windows, and a first sliding member and a second sliding member fitted together. The first sliding member includes a first base, and the second sliding member includes a second base. A first guide wheel assembly is rotatably disposed on the outer side of the first base, and a second guide wheel assembly is rotatably disposed on the outer side of the second base. When the first and second sliding members are brought close together, the first and second bases overlap in their front-to-back projections. Door and window connecting rods are connected to both the first and second bases, and these connecting rods are rotatably connected to the adjustment kit. The advantages of this utility model are that it helps improve the fit of folded doors and windows, increases space utilization, and enhances structural compactness. It also allows for adjustment of the pressure or friction between the guide wheel assemblies and guide rails on the first and second bases according to actual usage, ensuring smooth movement.

Description

Technical Field

[0001] This utility model relates to the field of folding window technology, and in particular to a pulley assembly for folding doors and windows. Background Technology

[0002] Folding doors and windows are a type of door and window that folds and opens by moving pulleys on a track. Because they take up very little space when folded and open, they are suitable for small apartments or scenarios that require flexible layout, and have the advantage of high space utilization. In addition, they also have sound insulation, heat insulation, dustproof and anti-theft properties, and some products incorporate intelligent control, so the products have diverse functions and are widely used in residential, commercial shops, sunrooms and other buildings.

[0003] Authorization announcement number CN219034503U discloses an electric folding door and folding window. The technical solution "includes a power frame and a door or window, with a power shaft and a tilting shaft installed on the door or window. The power shaft is slidably mounted to the power frame via a slat trolley, and the tilting shaft is mounted to the power frame via a tilting structure and a guide rail. The cooperation of the power shaft, tilting shaft, tilting structure, guide rail, and other transmission structures enables a motor to drive the door or window to open and close, and to generate a lateral thrust to push the door or window tight, achieving better sound insulation, heat insulation, and waterproofing performance." However, because adjacent door panels are supported and slid together via slat trolleys with identical structures, this results in a low degree of fit after folding, reducing space utilization, especially failing to meet the needs of small apartments for maximum space utilization. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art and provides a pulley assembly for folding doors and windows, which helps to improve the fit of the doors and windows after folding and improve space utilization.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] A pulley assembly for folding doors and windows includes an adjustment kit adapted for installation on the door or window, and a first sliding member and a second sliding member fitted together. The first sliding member includes a first base, and the second sliding member includes a second base. A first guide wheel assembly is rotatably disposed on the outer side of the first base, and a second guide wheel assembly is rotatably disposed on the outer side of the second base. When the first sliding member and the second sliding member are brought close together, the first base and the second base have overlapping portions in their front-to-back projections.

[0007] Both the first and second bases are connected to door and window connecting rods, which are rotatably connected to the adjustment kit.

[0008] Furthermore, the adjustment kit includes a first mounting sleeve located above and a second mounting sleeve located below. The door and window connecting rod is rotatably assembled in the second mounting sleeve. A threaded component is threadedly connected to the first mounting sleeve. A top rod is movably and vertically mounted at the lower end of the threaded component. The threaded component is connected to the top rod, and the top rod is connected to the door and window connecting rod. By rotating the threaded component, the top rod can be controlled to move forward or backward toward the door and window connecting rod, thereby adjusting the tightness of the contact with the door and window connecting rod.

[0009] Furthermore, the first mounting sleeve has a fixing hole, through which a fastening screw passes and is fastened to the door or window.

[0010] Furthermore, the first base includes a bottom plate and a first side plate connected together, the second base includes a top plate and a second side plate connected together, a first guide wheel assembly is rotatably connected to the outside of the first side plate, and a second guide wheel assembly is rotatably connected to the outside of the second side plate.

[0011] Furthermore, both the first guide wheel group and the second guide wheel group include at least one high-position wheel and at least one low-position wheel. The rim of the high-position wheel protrudes upward from the upper surface of the first base / second base, and the rim of the low-position wheel protrudes downward from the lower surface of the first base / second base.

[0012] Furthermore, at least one guide wheel is rotatably provided on the upper and / or lower surfaces of the first base and the second base, and the rotation plane of the guide wheel is perpendicular to the rotation plane of the lower wheel and the upper wheel.

[0013] Furthermore, a fixing plate for fixing to the door or window is movably sleeved on the door or window connecting rod.

[0014] Furthermore, buffer strips are provided at the front walking sections of the first base and the second base.

[0015] Furthermore, both the first base and the second base are provided with dovetail-shaped snap-fit ​​slots, and the buffer strip can be detachably installed in the slots.

[0016] Furthermore, the end of the top rod that abuts against the door and window connecting rod is shaped like a ball.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This utility model is designed with a first sliding member and a second sliding member that fit together. After the door or window is folded, the first base of the first sliding member and the second base of the second pulley member will be interlocked, which helps to improve the fit of the door or window after folding, improve space utilization and structural compactness. It is also equipped with an adjustment kit, which can adjust the pressure or friction between the guide wheel assembly and the guide rail on the first base and the second base according to the actual use, so as to make the movement smooth. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and, together with the embodiments of the present invention, are used to explain the present invention. They do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is an overall diagram of the pulley assembly for folding doors and windows;

[0021] Figure 2 This is an exploded view of the adjustment kit on the second sliding component;

[0022] Figure 3 It is a three-dimensional representation of the first sliding member and the second sliding member. Figure 1 ;

[0023] Figure 4 It is a three-dimensional representation of the first sliding member and the second sliding member. Figure 2 ;

[0024] Figure 5 This is a three-dimensional view of the second sliding component.

[0025] In the picture:

[0026] 1. First sliding component; 101. First base; 1011. Base plate; 1012. First side plate; 2. Second sliding component; 201. Second base; 2011. Top plate; 2012. Second side plate; 2013. Slot; 3. High-position wheel; 4. Low-position wheel; 5. Guide limit wheel; 6. Door and window connecting rod; 7. Buffer strip; 8. Adjustment kit; 801. First mounting sleeve; 8011. Fixing hole; 802. Second mounting sleeve; 9. Threaded part; 10. Top rod; 11. Fastening screw; 12. Fixing plate. Detailed Implementation

[0027] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0028] like Figures 1 to 5As shown, this utility model claims protection for a pulley assembly for folding doors and windows, including an adjustment kit 8 adapted to be installed on the door or window, and a first sliding member 1 and a second sliding member 2 fitted together. The first sliding member 1 includes a first base 101, and the second sliding member 2 includes a second base 201. Both the first base 101 and the second base 201 are assembled in the guide rail of the folding door or window. The first base 101 and the second base 201 are also connected to a door or window connecting rod 6 for connecting with the folding door or window. The door or window connecting rod 6 is rotatably connected in the adjustment kit 8, so when the door or window moves, it will drive the first base 101 and the second base 201 to move in the guide rail.

[0029] The first base 101 has a first guide wheel assembly on its outer side, and the second side plate 2012 has a second guide wheel assembly on its outer side. Both the first and second guide wheel assemblies include at least one high wheel 3 and at least one low wheel 4. The rim of the high wheel 3 protrudes upward from the upper surface of the first base 101 / second base 201, and the rim of the low wheel 4 protrudes downward from the lower surface of the first base 101 / second base 201. The first base 101 and the second base 201 move in the track via the high wheel 3 and the low wheel 4. The high wheel 3 can be used to roll into contact with the top of the inner wall of the track, and the low wheel 4 can be used to roll into contact with the bottom of the inner wall of the track. The planes on which the first guide wheel assembly and the second guide wheel assembly are located are parallel to each other, so there will be no path interference during movement, and the movement is smooth.

[0030] Specifically, the first base 101 includes a bottom plate 1011 and a first side plate 1012 connected together, and the second base 201 includes a top plate 2011 and a second side plate 2012 connected together. The first guide wheel assembly is rotatably connected to the outside of the first side plate 1012, and the second guide wheel assembly is rotatably connected to the outside of the second side plate 2012. Therefore, the first guide wheel assembly and the second guide wheel assembly can be prevented from touching when the first base 101 and the second base 201 are fitted together, which also helps to improve the tightness of the connection.

[0031] In this embodiment, the center height and diameter of the high wheel 3 are both greater than those of the low wheel 4. The combination of the high wheel 3 and the low wheel 4 forms a walking constraint system, which effectively suppresses displacement deviation in the Z-axis direction.

[0032] To further enhance operational stability, at least one guide wheel 5 is provided on the upper and / or lower surfaces of the first base 101 and the second base 201. The rotation plane of the guide wheel 5 is perpendicular to the rotation plane of the lower wheel 4 and the higher wheel 3. The guide wheel 5 can be used to roll into contact with both sides of the inner wall of the track, so that the first sliding member 1 and the second sliding member 2 will not sway left and right when walking.

[0033] In this utility model, when the first sliding member 1 and the second sliding member 2 come close together, the first base 101 and the second base 201 overlap in the projection in the front-back direction, that is, the first base 101 and the second base 201 interlock, thereby enhancing the compactness of the structure and improving the fit of the folded door and window.

[0034] In this embodiment, buffer strips 7 are provided at the front walking sections of the first base 101 and the second base 201; Figure 1 For example, when the first base 101 and the second base 201 are interlocked to the limit, the buffer strip 7 on the second base 201 touches and contacts the corresponding part of the first base 101, which helps to improve the degree of connection. Since the first base 101 and the second base 201 are usually made of metal, the design of the buffer strip 7 helps to reduce noise and provide a buffering effect.

[0035] Both the first base 101 and the second base 201 are provided with dovetail-shaped snap-fit ​​grooves 2013. The buffer strip 7 can be detachably installed in the grooves 2013. This detachable design facilitates assembly and replacement maintenance. The buffer strip 7 has an arc-shaped surface. According to research, the arc-shaped structure can disperse the impact force along the tangent direction of the curved surface, avoid local stress concentration when the plane is in contact, reduce the risk of material cracking, and extend the service life.

[0036] The adjustment kit 8 includes a first mounting sleeve 801 located at the top and a second mounting sleeve 802 located at the bottom. Both the first mounting sleeve 801 and the second mounting sleeve 802 are installed on the side of the door or window. The side of the door or window is provided with a mounting groove, in which the first mounting sleeve 801 and the second mounting sleeve 802 are installed. The first mounting sleeve 801 is fixed in the mounting groove, while the second mounting sleeve 802 can move up and down in the mounting groove, having a certain amount of movement space. The first mounting sleeve 801 has a fixing hole 8011, through which a fastening screw 11 passes and is fastened to the door or window.

[0037] The door and window connecting rod 6 is rotatably assembled in the second mounting sleeve 802; a threaded part 9 is threadedly connected to the first mounting sleeve 801, and a top rod 10 is movably and vertically mounted on the lower end of the threaded part 9. The threaded part 9 is connected to the top rod 10, and the top rod 10 is connected to the door and window connecting rod 6. By rotating the threaded part 9, the top rod 10 can be controlled to move forward or backward in the direction of the door and window connecting rod 6, thereby adjusting the tightness against the door and window connecting rod 6. In other words, the height of the first base 101 and the second base 201 can be finely adjusted, thereby adjusting the pressure of the guide wheel assembly on the first base 101 and the second base 201 on the track, and controlling the friction between the guide wheel assembly and the track. This allows for adjustment and control according to the actual use of different specifications of folding doors and windows, so that the folding doors and windows can move smoothly.

[0038] A fixing plate 12 for fixing to the door and window is movably sleeved on the door and window connecting rod 6. A slot is provided at the bottom of the door and window. The fixing plate 12 is inserted into the slot and screwed in longitudinally from bottom to top to lock the fixing plate 12 to the door and window, thereby enhancing the fixing effect between the first sliding member 1 and the second sliding member 2 and the door and window.

[0039] During the sliding and folding process of doors and windows, the connecting rod 6 will rotate together with the first base 101 and the second base 201, while the top rod 10 will not rotate. That is, the connecting rod 6 will rotate relative to the top rod 10. Therefore, in this embodiment, by setting the end of the top rod 10 that abuts against the door and window connecting rod 6 into a ball head shape, the sliding friction area is effectively reduced and the resistance during movement is reduced compared with the traditional planar contact.

[0040] This folding door and window pulley assembly is designed with a first sliding member 1 and a second sliding member 2 having an interlocking arrangement. After the door and window are folded, the first base 101 of the first sliding member 1 and the second base 201 of the second pulley member 2 will be interlocked, which helps to improve the fit of the door and window after folding, improve space utilization and structural compactness. An adjustment kit 8 is also provided, which can adjust the pressure or friction between the guide wheel assembly and the guide rail on the first base 101 and the second base 201 according to the actual use, so as to make the movement smooth.

[0041] The folding doors and windows mentioned above refer to folding doors and folding windows, meaning that this design can be applied to folding doors and folding windows.

[0042] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pulley assembly for folding doors and windows, characterized in that: The system includes an adjustment kit (8) adapted for installation on doors and windows, and a first sliding member (1) and a second sliding member (2) fitted together. The first sliding member (1) includes a first base (101), and the second sliding member (2) includes a second base (201). A first guide wheel assembly is rotatably provided on the outer side of the first base (101), and a second guide wheel assembly is rotatably provided on the outer side of the second base (201). When the first sliding member (1) and the second sliding member (2) are brought close together, the first base (101) and the second base (201) have overlapping portions in the front-to-back direction projection. Door and window connecting rods (6) are connected to both the first base (101) and the second base (201), and the door and window connecting rods (6) are rotatably connected to the adjusting kit (8).

2. The pulley assembly for folding doors and windows according to claim 1, characterized in that: The adjustment kit (8) includes a first mounting sleeve (801) located above and a second mounting sleeve (802) located below. The door and window connecting rod (6) is rotatably assembled in the second mounting sleeve (802). A threaded part (9) is threadedly connected to the first mounting sleeve (801). A top rod (10) is movably and vertically arranged at the lower end of the threaded part (9). The threaded part (9) is connected to the top rod (10), and the top rod (10) is connected to the door and window connecting rod (6). By rotating the threaded part (9), the top rod (10) can be controlled to move forward or backward toward the door and window connecting rod (6), thereby adjusting the tightness of the door and window connecting rod (6).

3. The pulley assembly for folding doors and windows according to claim 2, characterized in that: The first mounting sleeve (801) has a fixing hole (8011), and the fastening screw (11) passes through the fixing hole (8011) and is fastened to the door and window.

4. The pulley assembly for folding doors and windows according to claim 1, characterized in that: The first base (101) includes a bottom plate (1011) and a first side plate (1012) connected together, and the second base (201) includes a top plate (2011) and a second side plate (2012) connected together. The first guide wheel group is rotatably connected to the outside of the first side plate (1012), and the second guide wheel group is rotatably connected to the outside of the second side plate (2012).

5. The pulley assembly for folding doors and windows according to claim 4, characterized in that: The first guide wheel group and the second guide wheel group each include at least one high-position wheel (3) and at least one low-position wheel (4). The rim of the high-position wheel (3) protrudes upward from the upper surface of the first base (101) / second base (201), and the rim of the low-position wheel (4) protrudes downward from the lower surface of the first base (101) / second base (201).

6. The pulley assembly for folding doors and windows according to claim 1, characterized in that: At least one guide wheel (5) is rotatably provided on the upper and / or lower surfaces of the first base (101) and the second base (201), and the rotation plane of the guide wheel (5) is perpendicular to the rotation plane of the lower wheel (4) and the upper wheel (3).

7. The pulley assembly for folding doors and windows according to claim 1, characterized in that: The door and window connecting rod (6) is movably fitted with a fixing plate (12) for fixing to the door and window.

8. The pulley assembly for folding doors and windows according to any one of claims 1 to 6, characterized in that: The first base (101) and the second base (201) are provided with buffer strips (7) at the front walking end.

9. The pulley assembly for folding doors and windows according to claim 7, characterized in that: Both the first base (101) and the second base (201) are provided with a dovetail-shaped snap-fit ​​groove (2013), and the buffer strip (7) can be detachably installed in the groove (2013).

10. The pulley assembly for folding doors and windows according to claim 2, characterized in that: The end of the top rod (10) that abuts against the door and window connecting rod (6) is shaped like a ball.

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