Cross nested pulley assembly

Abstract

The utility model provides a cross nesting type pulley assembly, which relates to the technical field of folding windows and comprises a first sliding component and a second sliding component which are arranged in a nesting mode, the first sliding component comprises a first base, the second sliding component comprises a second base, and a first guide wheel set is arranged on the outer side of the first base. A second guide wheel set is arranged on the outer side of the second base. The plane where the first guide wheel set is located is parallel to the plane where the second guide wheel set is located. When the first sliding component and the second sliding component are close to each other and combined, the projection of the first base and the projection of the second base in the front-back direction coincide. The sliding window has the advantages that the first sliding component and the second sliding component which are arranged in an embedded mode are designed, the first base of the first sliding component and the second base of the second sliding component can be nested in a crossed mode after the window sash is folded, and therefore the attaching degree of the window sash after the window sash is folded can be improved; and the space utilization rate and the structure compactness are improved.

Description

Technical Field

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

[0002] Folding windows are a type of window that uses hinges or sliding rails to allow multiple window panels to fold and open. The core principle involves combining multiple window panels with flexible connecting components, allowing them to slide along tracks and fold away to one side, maximizing the opening space (up to 80%-90%) while also providing ventilation, lighting, and efficient space utilization. They are widely used in residential, commercial, and sunroom buildings.

[0003] Authorization announcement number CN219034503U discloses an electric folding door and folding window. The technical solution includes "a power frame and door or window sashes. A power shaft and a tilting shaft are provided on the door or window sash. The power shaft is slidably mounted to the power frame via a sash trolley. 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 sash to open and close, and to generate a lateral thrust to push the door or window sash tightly, achieving better sound insulation, heat insulation, and waterproofing performance." However, because adjacent door sashes are supported and slid together via sash 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 by providing a cross-nested pulley assembly, which helps to improve the fit of the window sash 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 cross-nested pulley assembly includes a first sliding member and a second sliding member that are fitted together. The first sliding member includes a first base, and the second sliding member includes a second base. A first guide wheel group is provided on the outer side of the first base, and a second guide wheel group is provided on the outer side of the second base. The planes on which the first guide wheel group and the second guide wheel group are located are parallel to each other. When the first sliding member and the second sliding member are brought close together, the projections of the first base and the second base in the front-rear direction coincide.

[0007] 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.

[0008] 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, with the rim of the high-position wheel protruding upwards from the upper surface of the first base / second base, and the rim of the low-position wheel protruding downwards from the lower surface of the first base / second base.

[0009] Furthermore, the center height and diameter of the higher wheel are both greater than those of the lower wheel.

[0010] Furthermore, at least one guide wheel is 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.

[0011] Furthermore, the first base and the second base are also connected to a window sash connecting rod for connecting to the window sash, and the upper end of the window sash connecting rod is provided with a tapered guide head.

[0012] Furthermore, buffer strips are provided at the front walking sections of the first base and the second base.

[0013] 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.

[0014] Furthermore, the buffer strip has an arc-shaped surface.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model is designed with a first sliding member and a second sliding member that are fitted together. After the window sash is folded, the first base of the first sliding member and the second base of the second sliding member will be interlocked, which helps to improve the fit of the window sash after folding, improve space utilization and structural compactness. Attached Figure Description

[0017] 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:

[0018] Figure 1 It is a three-dimensional representation of the first sliding member and the second sliding member. Figure 1 ;

[0019] Figure 2 It is a three-dimensional representation of the first sliding member and the second sliding member. Figure 2 ;

[0020] Figure 3 It is a three-dimensional representation of the first sliding member and the second sliding member. Figure 3 ;

[0021] Figure 4 This is a three-dimensional view of the second sliding component.

[0022] In the picture:

[0023] 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 limiting wheel; 6. Window sash connecting rod; 7. Buffer strip. Detailed Implementation

[0024] 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.

[0025] like Figures 1 to 4 As shown, this utility model claims protection for a cross-nested pulley assembly, including 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 a folding window. The first base 101 and the second base 201 are also connected to a window sash connecting rod 6 for connecting with the window sash. The upper end of the window sash connecting rod 6 is provided with a tapered guide head, which helps to insert into the window sash assembled in the folding window. Therefore, when the folding window moves, it will drive the first base 101 and the second base 201 to move in the guide rail.

[0026] The first base 101 has a first guide wheel assembly on its outer side, and the second base 201 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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 window sash.

[0031] 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.

[0032] 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.

[0033] This cross-nested pulley assembly is designed with a first sliding member 1 and a second sliding member 2 having an interlocking arrangement. After the window sash is folded, the first base 101 of the first sliding member 1 and the second base 201 of the second sliding member 2 will cross-nest, thereby helping to improve the fit of the window sash after folding, improve space utilization and structural compactness.

[0034] 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 cross-nested pulley assembly, characterized by: The application relates to a first sliding member (1) and a second sliding member (2) which are embeddedly arranged, the first sliding member (1) comprises a first base (101), the second sliding member (2) comprises a second base (201), the outer side of the first base (101) is provided with a first guide wheel set, the outer side of the second base (201) is provided with a second guide wheel set, the planes where the first guide wheel set and the second guide wheel set are located are parallel to each other; when the first sliding member (1) and the second sliding member (2) are combined, the first base (101) and the second base (201) are overlapped in the projection in the front-rear direction.

2. The cross-nest pulley assembly of claim 1, wherein: The first base (101) comprises a bottom plate (1011) and a first side plate (1012) which are connected, the second base (201) comprises a top plate (2011) and a second side plate (2012) which are connected, the first guide wheel set is rotationally connected to the outer side of the first side plate (1012), and the second guide wheel set is rotationally connected to the outer side of the second side plate (2012).

3. The cross-nest pulley assembly of claim 1, wherein: The first guide wheel set and the second guide wheel set each comprise at least one high-position wheel (3) and at least one low-position wheel (4), the rim of the high-position wheel (3) protrudes upwards to the upper surface of the first base (101) / the second base (201), and the rim of the low-position wheel (4) protrudes downwards to the lower surface of the first base (101) / the second base (201).

4. The cross-nest pulley assembly of claim 3, wherein: The center height and the diameter size of the high-position wheel (3) are greater than those of the low-position wheel (4).

5. The cross-nest pulley assembly of claim 1, wherein: The upper surface and / or the lower surface of the first base (101) and the second base (201) are provided with at least one guide limiting wheel (5), the rotation plane of the guide limiting wheel (5) is perpendicular to the rotation planes of the low-position wheel (4) and the high-position wheel (3).

6. The cross-nest pulley assembly of claim 1, wherein: The first base (101) and the second base (201) are further connected with a sash connecting rod (6) which is used for being connected with a sash, and the upper end of the sash connecting rod (6) is provided with a conical guide head.

7. The cross-nest pulley assembly of any one of claims 1 to 6, wherein: The walking front end part of the first base (101) and the second base (201) is provided with a buffer strip (7).

8. The cross-nest pulley assembly of claim 7, wherein: The first base (101) and the second base (201) are each provided with a dovetail type clamping groove (2013), and the buffer strip (7) can be detachably installed in the clamping groove (2013).

9. The cross-nest pulley assembly of claim 8, wherein: The buffer strip (7) has an arc surface.

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