A pulley assembly for doors and windows

Abstract

The utility model relates to the technical field of door and window fittings, concretely is a pulley assembly for door and window, including the connecting plate, the connecting plate bottom is provided with the wheel support, the inside installation of wheel support has the bearing axle, is provided with a group of shoulder pole wheel supports on bearing axle, and the both ends of shoulder pole wheel support are installed with bearing pulley, and the bottom surface both ends of connecting plate each is provided with a group of dustproof components, the utility model provides a pulley assembly for door and window, through adopting high strength, wear -resisting, self -lubricating material, combines the precision bearing structure, significantly improves the sliding smoothness and efficiency, low noise structure design reduces the noise pollution when sliding, promotes the living comfort, the bearing structure of dustproof and antifouling design and easy maintenance, prolongs the life, and reduces the maintenance cost, adopts high strength and low friction coefficient material, significantly improves the bearing capacity of pulley group, and simultaneously can also arrange multiple groups of pulleys simultaneously, to satisfy the demand of super heavy door and window.

Description

Technical Field

[0001] This utility model relates to the technical field of door and window accessories, specifically a pulley assembly for doors and windows. Background Technology

[0002] Traditional sliding door and window roller assemblies are mostly made of plastic. While they meet basic usage requirements to some extent, they often suffer from problems such as uneven sliding, abnormal noise, and easy wear and tear over long-term use. Furthermore, some roller assemblies are poorly designed, leading to complex installation and difficult maintenance. Moreover, dust and debris are difficult to remove from the sliding window tracks, necessitating improvements. Utility Model Content

[0003] The purpose of this utility model is to provide a pulley assembly for doors and windows to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a pulley assembly for doors and windows, including a connecting plate, a wheel frame at the bottom of the connecting plate, a load-bearing shaft installed inside the wheel frame, a set of spreader wheel frames on the load-bearing shaft, bearing pulleys installed at both ends of the spreader wheel frames, and a set of dustproof components at each end of the bottom surface of the connecting plate.

[0005] Preferably, the connecting plate is made of stainless steel.

[0006] Preferably, the wheel frame is fixed to the connecting plate by several fixing screws.

[0007] Preferably, the load-bearing shaft is fixed to the wheel frame by fixing screws.

[0008] Preferably, the spreader wheel frame is hinged to the load-bearing shaft via an intermediate bushing, and the spreader wheel frame can have a 1mm movement clearance relative to the load-bearing shaft in the axial position.

[0009] Preferably, the dustproof component includes a brush and a mounting frame. The top of the brush is connected to a top plate, which is inserted into a channel in the middle of the mounting frame. Cavities are provided on both sides of the inner bottom surface of the channel. Movable strips are movably inserted into the cavities. A tensioning spring is connected to the bottom of the movable strip. A ball bearing is embedded in the top surface of the movable strip. The ball bearing is embedded in a groove on the bottom surface of the top plate. Several fixed protrusions are provided on the top surface of the top plate. The fixed protrusions are correspondingly inserted into positioning holes on the top surface of the channel.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This utility model proposes a pulley assembly for doors and windows. By using high-strength, wear-resistant, and self-lubricating materials combined with a precision bearing structure, it significantly improves the smoothness and efficiency of sliding. The low-noise structural design reduces noise pollution during sliding, enhancing living comfort. The dustproof and stain-proof design and easy-to-maintain bearing structure extend service life and reduce maintenance costs. The use of high-strength and low-friction coefficient materials significantly improves the load-bearing capacity of the pulley assembly, and multiple pulleys can be arranged simultaneously to meet the needs of ultra-heavy-duty doors and windows. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the device structure of this utility model.

[0013] Figure 2 This is a bottom view of the device of this utility model.

[0014] Figure 3 This is a top view of the device of this utility model.

[0015] Figure 4 This is a side view of the device of this utility model.

[0016] Figure 5 This is a cross-sectional view of the wheel frame mounting structure of this utility model.

[0017] Figure 6 This is a sectional view of the load-bearing shaft mounting structure of this utility model.

[0018] Figure 7 for Figure 4 Enlarged view of point A in the middle.

[0019] In the diagram: 1. Connecting plate; 2. Wheel frame; 3. Load-bearing shaft; 4. Carrying pole wheel frame; 5. Bearing pulley; 6. Dustproof assembly; 601. Brush; 602. Mounting frame; 603. Top plate; 604. Tightening spring; 605. Movable bar; 606. Fixed protrusion; 7. Fixing screw. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 7This utility model provides a technical solution: a pulley assembly for doors and windows, including a connecting plate 1, a wheel frame 2 at the bottom of the connecting plate 1, a load-bearing shaft 3 installed inside the wheel frame 2, a set of flat-pole wheel frames 4 on the load-bearing shaft 3, bearing pulleys 5 installed at both ends of the flat-pole wheel frames 4, and a set of dustproof components 6 at each end of the bottom surface of the connecting plate 1.

[0022] The connecting plate 1 is made of stainless steel to improve the strength, impact resistance and corrosion resistance of the component.

[0023] The wheel frame 2 is fixed to the connecting plate 1 by several fixing screws 7. It is made of 6-series aerospace aluminum alloy with surface oxidation treatment; while ensuring strength and mechanical properties, it enhances corrosion resistance.

[0024] The load-bearing shaft 3 is fixed to the wheel frame 2 by fixing screws 7. It is made of stainless steel to ensure strength and rigidity while improving corrosion resistance.

[0025] The spreader wheel frame 4 is hinged to the load-bearing shaft 3 via a central bushing. The spreader wheel frame 4 has a ±1mm axial clearance relative to the load-bearing shaft 3. The spreader wheel frame 4 is made of stainless steel to ensure strength and rigidity while improving corrosion resistance.

[0026] The bearing pulley 5 is made of high-strength, highly wear-resistant stainless steel, with the wheel body and bearing integrally molded to improve the pulley's wear resistance and smooth sliding. The bearing pulley 5 is designed with a low-noise structure to reduce noise pollution during sliding; it incorporates precision ball bearings to reduce frictional resistance and improve sliding efficiency. The bearing structure is designed for easy maintenance and replacement, allowing for necessary upkeep after long-term use.

[0027] This sliding door and window pulley assembly, through the use of appropriate materials and structural design, not only meets the functional requirements but also solves the problems of uneven sliding, abnormal noise, and easy wear of conventional pulley sets; at the same time, it improves corrosion resistance and load-bearing capacity.

[0028] The dustproof component 6 includes a brush 601 and a mounting frame 602. The top of the brush 601 is connected to a top plate 603. The top plate 603 is inserted into a channel in the middle of the mounting frame 602. Cavities are provided on both sides of the inner bottom surface of the channel. Movable strips 605 are movably inserted into the cavities. A tensioning spring 604 is connected to the bottom of the movable strip 605. A ball bearing is embedded in the top surface of the movable strip 605. The ball bearing is embedded in a groove on the bottom surface of the top plate 603. Several fixing protrusions 606 are provided on the top surface of the top plate 603. The fixing protrusions 606 are correspondingly inserted into the positioning holes on the top surface of the channel. The brush 601 is coated with a layer of adhesive to stick to dust and debris in the track, keeping the slide rail clean during operation. After a period of use, it needs to be replaced. Simply pull down the brush 601 to remove the fixed protrusion 606 from the positioning hole, and then pull the top plate 603 out from one end of the channel. When replacing with a new part, first insert the top plate 603 into the channel. When the fixed protrusion 606 is aligned with the positioning hole, the tightening spring 604 pushes the movable bar 605 upward, so that the fixed protrusion 606 is inserted into the positioning hole, and the replacement is completed.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pulley assembly for doors and windows, comprising a connecting plate (1), characterized in that: The bottom of the connecting plate (1) is provided with a wheel frame (2), and a load-bearing shaft (3) is installed inside the wheel frame (2). A set of flat pole wheel frames (4) is provided on the load-bearing shaft (3). Bearing pulleys (5) are installed at both ends of the flat pole wheel frames (4). A set of dustproof components (6) is provided at each end of the bottom surface of the connecting plate (1).

2. The pulley assembly for doors and windows according to claim 1, characterized in that: The connecting plate (1) is a stainless steel plate.

3. A pulley assembly for doors and windows according to claim 1, characterized in that: The wheel frame (2) is fixed to the connecting plate (1) by several fixing screws (7).

4. A pulley assembly for doors and windows according to claim 1, characterized in that: The load-bearing shaft (3) is fixed to the wheel frame (2) by fixing screws (7).

5. A pulley assembly for doors and windows according to claim 1, characterized in that: The spreader wheel frame (4) is hinged to the load-bearing shaft (3) through the middle bushing, and the spreader wheel frame (4) can have a 1mm movement clearance relative to the load-bearing shaft (3) in the axial position.

6. A pulley assembly for doors and windows according to claim 1, characterized in that: The dustproof component (6) includes a brush (601) and a mounting frame (602). The top of the brush (601) is connected to a top plate (603). The top plate (603) is inserted into a channel in the middle of the mounting frame (602). Cavities are provided on both sides of the inner bottom surface of the channel. Movable strips (605) are movably inserted into the cavities. A tensioning spring (604) is connected to the bottom of the movable strips (605). Ball bearings are embedded in the top surface of the movable strips (605). The ball bearings are embedded in the grooves on the bottom surface of the top plate (603). Several fixed protrusions (606) are provided on the top surface of the top plate (603). The fixed protrusions (606) are correspondingly inserted into the positioning holes on the top surface of the channel.

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