A pulley mechanism for lifting sliding doors and windows

Abstract

This utility model discloses a pulley mechanism for lifting sliding doors and windows, including fixed supports and sliding units. At least two sets of fixed supports are provided, with a limiting member at the top of each fixed support and a support platform extending downwards from the bottom of the fixed support, with a guide hole on the support platform. Each set of fixed supports is connected to a sliding unit, which is movably connected to the fixed support via the guide hole. Adjacent sliding units are connected by a connecting rod. This utility model's pulley mechanism for lifting sliding doors and windows, with at least two sets of fixed supports forming a front fixed support and a rear fixed support, has limiting members installed on the top surface of both the front and rear fixed supports. These limiting members prevent gaps between the front and rear fixed supports and the grooves at the bottom of the door or window, ensuring that the front and rear fixed supports remain in a straight line after installation. This ensures the installation accuracy between the front and rear fixed supports and improves the smoothness of the subsequent sliding unit's movement.

Description

Technical Field

[0001] This utility model relates to the field of building door and window technology, and in particular to a pulley mechanism for lifting sliding doors and windows. Background Technology

[0002] Lift-up sliding doors or windows are a common type of product in the construction industry. The bottom of the door or window is equipped with a sliding lifting mechanism that can be raised or lowered relative to the door or window. When the door or window is raised, it can slide down to contact the bottom frame through the sliding lifting mechanism to open or close the door or window. When the door or window is lowered, the sliding lifting mechanism can be lifted upward to detach from the bottom frame, so that the sliding lifting mechanism does not slide in contact with the bottom frame, thus fixing the door or window.

[0003] Existing sliding lifting mechanisms generally include a base and a pulley unit connected to the base. The base is used to connect to the bottom of the door or window. To improve the load-bearing capacity of the door or window, two sets of bases are provided to form a front base and a rear base. At the same time, in order to facilitate the installation of the front base and the rear base at the bottom of the door or window, the width of the front base and the rear base (21.5mm) is smaller than the width of the bottom groove of the door or window (22mm). That is, the front base and the rear base will each form a 0.5mm gap with the bottom groove of the door or window. Due to the existence of the gap, when the front base and the rear base are installed in the bottom groove of the door or window, there may be a deviation between the front base and the rear base. They cannot be kept on the same straight line, which will cause the subsequent pulley unit to slide less smoothly, affecting the opening and closing of the door or window. Utility Model Content

[0004] The purpose of this invention is to provide a pulley mechanism for lifting sliding doors and windows that ensures assembly accuracy and improves sliding smoothness.

[0005] To solve the above technical problems, the present invention can be implemented using the following technical solutions:

[0006] A pulley mechanism for lifting sliding doors and windows includes a fixed support and a sliding unit. The fixed support is used to connect to the bottom of the door or window and is provided in at least two sets. A limit member is provided at the top of each set of fixed supports. A support platform extends downward from the bottom of each set of fixed supports and an inclined guide hole is provided on the support platform. Each set of fixed supports is connected to a sliding unit. The sliding unit is movably connected to the fixed support through the guide hole, and adjacent sliding units are connected by a connecting rod.

[0007] In one embodiment, the top of the fixed bracket is provided with a locking position and a slot is provided in the locking position. The limiting member has an "I" shaped structure and is provided with a pin. The pin is inserted into the slot so that the limiting member is installed in the locking position of the fixed bracket. After installation, the two ends of the limiting member will protrude from both sides of the fixed bracket.

[0008] In one embodiment, the limiting member is made of plastic.

[0009] In one embodiment, the sliding unit includes two sets of side plates arranged in parallel to each other, with rollers arranged between the side plates, and stress relief holes arranged at an inclination on the side plates, the stress relief holes corresponding to guide holes, and a guide shaft passing through the guide hole between the stress relief holes of the two sets of side plates.

[0010] In one embodiment, guide posts are provided at both ends of the guide shaft. The guide posts extend outward from the stress relief hole of the side plate and can slide along the inner wall of the stress relief hole. A limit stop is provided at the extended end of the guide post.

[0011] In one embodiment, the guide hole is arc-shaped, and the guide shaft can slide along the inner wall of the guide hole.

[0012] In one embodiment, the roller is connected to the two sets of side plates via a pivot, and the roller has an inwardly recessed track groove.

[0013] In one embodiment, the fixed support is provided with a clearance hole corresponding to the roller.

[0014] In one embodiment, a track support is provided at the bottom of the support platform. Beneficial effects

[0015] This utility model relates to a pulley mechanism for lifting sliding doors and windows. It is provided with at least two sets of fixed supports to form a front fixed support and a rear fixed support. A limiting member is installed on the top surface of both the front and rear fixed supports. The width of the limiting member is adapted to the width of the groove at the bottom of the door or window. When the fixed supports are installed, the limiting member prevents the front and rear fixed supports from having gaps with the groove at the bottom of the door or window. Therefore, the front and rear fixed supports can remain in a straight line after installation, thereby ensuring the installation accuracy between the front and rear fixed supports and improving the smoothness of the subsequent sliding unit when sliding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the pulley mechanism for lifting sliding doors and windows according to this utility model;

[0017] Figure 2This is an exploded view of the pulley mechanism for lifting sliding doors and windows according to this utility model;

[0018] Figure 3 This is a schematic diagram of the limiting component of the pulley mechanism for lifting sliding doors and windows according to this utility model.

[0019] As shown in the attached diagram:

[0020] 100. Fixed bracket; 110. Support platform; 120. Guide hole; 130. Locking position; 140. Slot; 150. Clearance hole; 160. Track bracket;

[0021] 200, Sliding unit; 210, Side plate; 211, Unloading hole; 220, Roller; 221, Track groove; 230, Guide shaft; 231, Guide post; 240, Limiting baffle;

[0022] 300. Limiting component; 310. Insert post;

[0023] 400. Connecting rod. Detailed Implementation

[0024] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when an element is said to be "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly on" another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0027] Please see Figure 1 and Figure 2A pulley mechanism for lifting sliding doors and windows includes a fixed support 100 and a sliding unit 200. The fixed support 100 is used to connect the bottom of the door or window and is provided in at least two sets. A limit member 300 is provided at the top of each set of fixed supports 100. A support platform 110 extends downward from the bottom of each set of fixed supports 100 and an inclined guide hole 120 is provided on the support platform 110. Each set of fixed supports 100 is connected to a sliding unit 200. The sliding unit 200 is movably connected to the fixed support 100 through the guide hole 120, and adjacent sliding units 200 are connected by a connecting rod 400.

[0028] Specifically, in this embodiment, to ensure support for the doors and windows, at least two sets of fixed supports 100 are provided to form a front fixed support 100 and a rear fixed support 100. Each of the front and rear fixed supports 100 is connected to a sliding unit 200, and adjacent sliding units 200 are connected by a connecting rod 400. Furthermore, limiting members 300 are provided on the top surfaces of both the front and rear fixed supports 100, and the width of the limiting member 300 is equal to the width of the groove at the bottom of the door or window. The front fixed bracket 100 and the rear fixed bracket 100 are installed in the groove at the bottom of the door and window respectively. The limiting member 300 can prevent the front fixed bracket 100 and the rear fixed bracket 100 from gapping with the groove at the bottom of the door and window. Therefore, the front fixed bracket 100 and the rear fixed bracket 100 can be kept in the same straight line after installation, thereby ensuring the installation accuracy between the front fixed bracket 100 and the rear fixed bracket 100, and improving the smoothness of the subsequent sliding unit 200 when sliding.

[0029] Of course, since the width of the limiting member 300 is compatible with the width of the groove at the bottom of the door and window, and in order to facilitate the installation of the limiting member 300 with the fixed bracket 100 in the groove at the bottom of the door and window, the limiting member 300 in this embodiment is made of plastic material. Since the plastic material itself has a certain degree of flexibility, the limiting member 300 can be easily installed with the fixed bracket 100 in the groove at the bottom of the door and window, thereby facilitating the overall installation of the fixed bracket 100.

[0030] Please see Figure 2 and Figure 3 In order to facilitate the installation of the limiting member 300 on the top surface of the fixed bracket 100, in this embodiment, a locking position 130 is provided on the top of the fixed bracket 100, and a slot 140 is provided in the locking position 130. The limiting member 300 has an "I" shaped structure and is provided with a post 310. The post 310 is inserted into the slot 140 so that the limiting member 300 is installed in the locking position 130 of the fixed bracket 100. After installation, the two ends of the limiting member 300 will protrude from both sides of the fixed bracket 100.

[0031] By inserting the bottom post 310 of the limiting member 300 into the slot 140 of the fixed bracket 100, the limiting member 300 can be installed in the locking position 130 of the fixed bracket 100. The locking position 130 allows the upper surface of the limiting member 300 to be lower than or flush with the upper surface of the fixed bracket 100 after installation, thus facilitating the installation of the fixed bracket 100 into the groove at the bottom of the door or window. The bottom post 310 of the limiting member 300 can be inserted into the slot 140 using an interference fit, so that the limiting member 300... Assembly is convenient and simple; after the limiting member 300 is assembled, both ends of the limiting member 300 will protrude from both sides of the fixed bracket 100, so that its width is greater than the width of the fixed bracket 100 and matches the width of the groove at the bottom of the door and window. After the fixed bracket 100 is installed, the width of the limiting member 300 matches the width of the groove at the bottom of the door and window, so that no gap is formed. This allows multiple fixed brackets 100 to be kept in the same straight line after installation, ensuring installation accuracy and improving smooth sliding.

[0032] Please see Figure 2 The sliding unit 200 includes two sets of side plates 210 arranged in parallel to each other. Rollers 220 are arranged between the side plates 210. An inclined stress relief hole 211 is opened on the side plate 210, and the stress relief hole 211 corresponds to the guide hole 120. A guide shaft 230 is provided between the stress relief holes 211 of the two sets of side plates 210 and passes through the guide hole. Guide posts 231 are respectively provided at both ends of the guide shaft 230. The guide posts 231 extend outward from the stress relief hole 211 of the side plate 210. The guide posts 231 can slide along the inner wall of the stress relief hole 211, and a limit baffle 240 is provided at the extended end of the guide post 211.

[0033] Rollers 220 can be assembled under the fixed bracket 100 via two sets of side plates 210. The rollers 220 can roll along the track below the door and window. The number of rollers 220 can be set according to actual needs and is not limited here. When it is necessary to move the rollers 220 up or down, the two sets of side plates 210 can be pushed or pulled. When the guide shaft 230 between the side plates 210 is pushed or pulled, it will slide obliquely along the guide hole 120, thereby realizing the overall oblique sliding of the side plates 210. At this time, the rollers 220 between the side plates 210 will follow the side plates 210 and move obliquely, realizing the upward or downward movement. When the guide shaft 230 moves to the highest position of the guide hole 120, the rollers 220 disengage from the track below, and the door and window cannot roll by the rollers 220. When the guide shaft 230 moves to the lowest position of the guide hole 120, the rollers 220 will return to the track, and the door and window can roll by the rollers 220.

[0034] In addition, by opening an inclined stress relief hole 211 on the side plate 210, the stress relief hole 211 has an elongated waist-shaped structure and corresponds to the guide hole 120. At the same time, the guide post 231 at the end of the guide shaft 230 passes through the stress relief hole 211. When the guide shaft 230 moves, the guide post 231 can slide along the inner wall of the stress relief hole 211. This can effectively reduce the resistance when the guide shaft 230 moves towards the highest position of the guide hole 120, making it easier and less strenuous for the guide shaft 230 to move upward, thus facilitating the user's operation of lifting and sliding doors and windows.

[0035] Meanwhile, a limiting baffle 240 is provided at the end of the guide post 231 that protrudes from the stress relief hole 211. The limiting baffle 240 can limit both ends of the guide shaft 230, thereby preventing the guide post 231 at the end of the guide shaft 230 from falling out of the stress relief hole 211. This ensures the connection stability between the sliding unit 200 and the fixed support 100, and ensures that the guide post 231 can slide along the inner wall of the stress relief hole 211 to reduce resistance.

[0036] Furthermore, in this embodiment, the guide hole 120 has an arc-shaped structure, allowing the guide shaft 230 to slide along the inner wall of the guide hole 120. Designing the guide hole 120 as an arc-shaped structure increases the stroke of the guide hole 120, and the arc-shaped structure of the guide hole 120 can improve the constraint effect on the guide shaft 230, preventing the guide shaft 230 from deflecting within the guide hole 120 and causing misalignment.

[0037] Please see Figure 2 In this embodiment, the bottom of the support platform 110 is also provided with a track bracket 160, and the roller 220 is connected to the two sets of side plates 210 through a pivot. The roller 220 is provided with an inwardly recessed track groove 221. When the roller 220 moves to the highest position, the track bracket 160 at the bottom of the support platform 110 can support the track below the door and window, thereby supporting the fixed support 100 and increasing the friction of the door and window moving on the track to prevent the door and window from sliding freely. When the roller 220 moves to the lowest position, the track groove 221 on the roller 220 will contact and cooperate with the track below the door and window, and the roller 220 can roll through the pivot, thereby sliding the door and window.

[0038] Finally, in order to ensure that the roller 220 can move to the highest position, a clearance hole 150 corresponding to the roller 220 is provided on the fixed support 100. The clearance hole 150 can form a gap, thereby avoiding obstruction of the roller 220 and allowing the roller 220 to move smoothly to the highest position so that the track bracket 160 at the bottom of the support platform 110 can contact and cooperate with the track under the door and window.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description; however, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model; furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A pulley mechanism for lifting a sliding door window, characterised in that, include: A fixed bracket is used to connect the bottom of a door or window, and at least two sets are provided. Each set of fixed brackets has a limiter at the top and a support platform extending downward from the bottom of each set of fixed brackets, with an inclined guide hole on the support platform. A sliding unit is provided. Each set of fixed supports is connected to a sliding unit. The sliding unit is movably connected to the fixed support through guide holes, and adjacent sliding units are connected by connecting rods.

2. A pulley mechanism for lifting a sliding door window according to claim 1, characterised in that: The top of the fixed bracket is provided with a locking position and a slot is provided in the locking position. The limiting member has an "I" shaped structure and is provided with a pin. The pin is inserted into the slot so that the limiting member is installed in the locking position of the fixed bracket. After installation, the two ends of the limiting member will protrude from both sides of the fixed bracket.

3. A pulley mechanism for lifting a sliding door window according to claim 2, characterised in that: The limiting component is made of plastic.

4. A pulley mechanism for lifting a sliding door window according to claim 1, characterized in that: The sliding unit includes two sets of side plates arranged in parallel to each other, with rollers between the side plates, and inclined stress relief holes on the side plates, which correspond to guide holes. A guide shaft passing through the guide hole is provided between the stress relief holes of the two sets of side plates.

5. A pulley mechanism for lifting a sliding door window according to claim 4, characterised in that: The guide shaft is provided with guide posts at both ends. The guide posts extend outward from the stress relief hole of the side plate and can slide along the inner wall of the stress relief hole. The extended end of the guide post is provided with a limit stop.

6. A pulley mechanism for lifting a sliding door window according to claim 4, characterised in that: The guide hole has an arc-shaped structure, and the guide shaft can slide along the inner wall of the guide hole.

7. A pulley mechanism for lifting a sliding door window according to claim 4, characterised in that: The roller is connected to the two sets of side plates via a rotating shaft, and the roller has an inwardly recessed track groove.

8. A pulley mechanism for lifting a sliding door window according to claim 4, characterized in that: The fixed support is provided with clearance holes corresponding to the rollers.

9. A pulley mechanism for lifting a sliding door window according to claim 1, characterized in that: The bottom of the support platform is equipped with a track support.

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