Height-adjustable pulley assembly

Abstract

The utility model provides a height-adjustable pulley assembly which comprises a base and pulleys connected to the two sides of the base, an adjusting seat is arranged on the inner side of the base, an adjusting block and a sliding block are arranged in the adjusting seat, the adjusting block is connected with an adjusting lead screw, the two ends of the adjusting lead screw penetrate through the adjusting seat and the sliding block respectively, and kidney-shaped holes are formed in the sliding block. The adjusting base is provided with a kidney-shaped hole, a positioning rod is arranged in the kidney-shaped hole in a penetrating mode, the two ends of the positioning rod sequentially penetrate through the adjusting base and the base from inside to outside respectively, the adjusting block and the sliding block are arranged in an inclined mode, and the sliding block axially translates when the adjusting block transversely moves through the adjusting lead screw. The height of the pulley can be flexibly adjusted, the using performance of the pulley assembly is improved, the adjusting block is driven by the adjusting lead screw in threaded connection to transversely move, the sliding block is made to axially translate, accurate adjustment of the height of the pulley is achieved, and the problems that the inner shell inclines and screws are clamped due to friction force are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pulley technical field, more specifically, especially, a high and low adjustable pulley assembly. BACKGROUND

[0002] The push-pull type aluminum alloy door and window refers to the door and window with the window sash vertically pushed and pulled along the horizontal direction, and the push-pull type door and window has the advantages of not occupying indoor space, beautiful appearance, reasonable price and good sealing performance. The pulley installed on the push-pull type door and window can make the door and window more flexible when being opened and closed. During the installation process, the position of the pulley in the fixing plate can be adjusted to enable the door and window to be well installed in the door frame. When being used after installation, the door and window can be easily opened and closed, and the large glass can increase the indoor lighting and improve the overall appearance of the building.

[0003] Most of the push-pull type door and window uses the adjustable pulley device with a double-layer structure. The adjustable pulley device with a double-layer structure mostly moves the nut through the screw, and then moves the inner shell abutting against the nut to adjust the position of the pulley arranged on the inner shell. An inclined guide groove is formed in one of the inner shell and the outer shell, and the guide piece penetrating in the guide groove is fixedly arranged on the other one. The movement of the inner shell along the axial direction of the screw can be converted into the movement in the height direction to adjust the height of the pulley. However, the inner shell and the nut are metal parts, and the friction therebetween is large. When the height of the inner shell is adjusted, the nut abutting against the inner shell is moved through the friction, and then the screw connected with the nut and the inner shell are inclined, the screw is easily stuck, and the inner shell and the pulley arranged in the inner shell are easily in the unbalanced state, and then the overall flexibility of the pulley during use is poor. SUMMARY

[0004] The utility model discloses an adjustable pulley assembly, which improves the prior art and overcomes the above-mentioned defects.

[0005] An adjustable pulley assembly, comprising a base and pulleys connected to both sides of the base, an adjusting seat is arranged on the inner side of the base, an adjusting block and a sliding block are arranged in the adjusting seat, the adjusting block is connected with an adjusting screw through a thread, the both ends of the adjusting screw penetrate the adjusting seat respectively, the sliding block is provided with a waist-shaped hole, and a positioning rod is arranged in the waist-shaped hole, the both ends of the positioning rod penetrate the adjusting seat and the base from inside to outside respectively, the adjusting seat is provided with an adjusting sliding groove corresponding to the positioning rod, and the adjusting block and the sliding block are arranged to be inclined to each other, so that the sliding block translates axially when the adjusting block moves transversely through the adjusting screw.

[0006] The adjusting seat comprises a frame sleeve and connecting arms extending along both ends of the frame sleeve, the frame sleeve is provided with an opening, the opening is arranged to face the base, and the adjusting block and the sliding block are arranged in the frame sleeve.

[0007] The two connecting arms are each connected to a quick-release plate via rotating bolts, and the adjusting seat is connected to a lower rail via the quick-release plate.

[0008] The two connecting arms are respectively provided with receiving grooves corresponding to the quick-release piece.

[0009] Both ends of the adjusting screw are exposed on the outside of the adjusting seat and are respectively provided with internal hexagonal adjusting heads.

[0010] The base has an adjustment port corresponding to the adjustment screw.

[0011] The oblong hole is inclined so that when the adjusting block moves laterally, the slider pushes the positioning rod to move up and down along the adjusting groove through the oblong hole.

[0012] The adjusting block is located at one end of the slider and has a T-shaped structure. The slider is provided with a groove corresponding to the adjusting block, so that the adjusting block can move along the axial direction of the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting an adjusting seat, adjusting block and slider, the height of the pulley can be flexibly adjusted, which improves the performance of the pulley assembly. The adjusting screw with threaded connection drives the adjusting block to move laterally, and the slider moves axially, realizing the precise adjustment of the pulley height and avoiding the problems of inner shell tilting and screw jamming caused by friction. The adjusting seat has an adjusting groove corresponding to the positioning rod, which allows the slider to move smoothly during the adjustment process, improving the flexibility of the pulley assembly. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below:

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a side view of the present invention;

[0017] Figure 3 This is an exploded structural diagram of the present invention;

[0018] Includes: 1. Base; 2. Pulley; 3. Adjusting seat; 4. Adjusting block; 5. Sliding block; 6. Adjusting screw; 7. Positioning rod; 8. Adjusting groove; 9. Frame sleeve; 10. Connecting arm; 11. Rotating bolt; 12. Quick-release plate; 13. Lower rail; 14. Receiving groove; 15. Hexagonal internal adjustment head; 16. Adjustment port; 17. Slot; 18. Oblong hole. Detailed Implementation

[0019] 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.

[0020] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings, as follows:

[0021] This utility model provides a height-adjustable pulley assembly that can be continuously installed on the lower rail 13 indefinitely. Existing pulley assemblies on the market can only be installed at both ends of the window sash for height adjustment. This utility model uses a side-adjustable wheelbase, allowing for adjacent installation on the profile and achieving unlimited installation. This utility model includes a base 1 and pulleys 2 connected to both sides of the base 1. The two pulleys use an extra-large wheelbase and a larger wheelbase to achieve a smoother ride and prevent derailment. An adjusting seat 3 is installed inside the base 1, and the adjusting seat 3 contains an adjusting block 4 and a sliding mechanism. Block 5 and adjusting block 4 are connected by adjusting screw 6 through thread. The two ends of adjusting screw 6 pass through adjusting seat 3 respectively. Sliding block 5 has a waist-shaped hole 18, and a positioning rod 7 is inserted in the waist-shaped hole 18. The two ends of positioning rod 7 pass through adjusting seat 3 and base 1 from the inside to the outside respectively. Using positioning rod 7 as a fulcrum, the front and rear pulleys 2 can swing up and down. Adjusting seat 3 has an adjusting groove 8 corresponding to positioning rod 7. Adjusting block 4 and sliding block 5 are inclined to each other, so that when adjusting block 4 moves laterally through adjusting screw 6, sliding block 5 moves axially.

[0022] The adjusting seat 3 includes a frame sleeve 9 and connecting arms 10 extending from both ends of the frame sleeve 9. The frame sleeve 9 has an opening facing the base 1. The frame sleeve 9 contains an adjusting block 4 and a slider 5. The two connecting arms 10 are respectively connected to quick-release pieces 12 by rotating bolts 11. By rotating the rotating bolts 11, the quick-release pieces 12 are rotated and fixed. The adjusting seat 3 is connected to a lower rail 13 through the quick-release pieces 12. The two connecting arms 10 are respectively provided with receiving grooves 14 corresponding to the quick-release pieces 12. The upper end face of the connecting arm 10 is in contact with the bottom end face of the lower rail 13.

[0023] Both ends of the adjusting screw 6 are exposed on the outside of the adjusting base 3 and are respectively provided with hexagonal head 15. The base 1 has an adjusting port 16 corresponding to the adjusting screw 6. The adjusting screw 6 can be adjusted by rotating the hexagonal head 15 at the adjusting port 16.

[0024] The oblong hole 18 is set at an angle so that when the adjusting block 4 moves laterally, the slider 5 pushes the positioning rod 7 to move up and down along the adjusting groove 8 through the oblong hole 18.

[0025] The adjusting block 4 is located at one end of the slider 5 and has a T-shaped structure. The slider 5 is provided with a groove 17 corresponding to the adjusting block 4, so that the adjusting block 4 can move axially along the groove 17.

[0026] This utility model, by setting an adjusting seat 3, an adjusting block 4, and a slider 5, allows the height of the pulley 2 to be flexibly adjusted, improving the performance of the pulley 2 assembly. The adjusting screw 6, which is connected by a thread, drives the adjusting block 4 to move laterally, causing the slider 5 to move axially, thus achieving precise adjustment of the height of the pulley 2 and avoiding the problems of inner shell tilting and screw jamming caused by friction. The adjusting seat 3 has an adjusting groove 8 corresponding to the positioning rod 7, which allows the slider 5 to move smoothly during the adjustment process, improving the flexibility of the pulley 2 assembly.

[0027] 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 variations 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 height-adjustable pulley assembly, comprising a base and pulleys connected to both sides of the base, characterized in that, An adjusting seat is installed inside the base. An adjusting block and a slider are provided inside the adjusting seat. The adjusting block is connected to an adjusting screw by a thread. Both ends of the adjusting screw pass through the adjusting seat. The slider has an oblong hole, and a positioning rod passes through the oblong hole. Both ends of the positioning rod pass through the adjusting seat and the base from the inside to the outside. The adjusting seat has an adjusting groove corresponding to the positioning rod. The adjusting block and the slider are inclined to each other so that the slider can be axially translated when the adjusting block moves laterally by the adjusting screw.

2. The height-adjustable pulley assembly according to claim 1, characterized in that, The adjusting seat includes a frame and connecting arms extending along both ends of the frame. The frame has an opening facing the base, and an adjusting block and a slider are provided inside the frame.

3. The height-adjustable pulley assembly according to claim 2, characterized in that, The two connecting arms are each connected to a quick-release plate via rotating bolts, and the adjusting seat is connected to a lower rail via the quick-release plate.

4. The height-adjustable pulley assembly according to claim 3, characterized in that, The two connecting arms are respectively provided with receiving grooves corresponding to the quick-release piece.

5. The height-adjustable pulley assembly according to claim 1, characterized in that, Both ends of the adjusting screw are exposed on the outside of the adjusting seat and are respectively provided with internal hexagonal adjusting heads.

6. The height-adjustable pulley assembly according to claim 1, characterized in that, The base has an adjustment port corresponding to the adjustment screw.

7. The height-adjustable pulley assembly according to claim 1, characterized in that, The oblong hole is inclined so that when the adjusting block moves laterally, the slider pushes the positioning rod to move up and down along the adjusting groove through the oblong hole.

8. The height-adjustable pulley assembly according to claim 1, characterized in that, The adjusting block is located at one end of the slider and has a T-shaped structure. The slider is provided with a groove corresponding to the adjusting block, so that the adjusting block can move along the axial direction of the groove.

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