Pulley block capable of being adjusted smoothly

Abstract

The utility model discloses a pulley block capable of being adjusted smoothly, which comprises a pulley seat and a fixed hanging piece arranged at the top of a sliding door, a plurality of pulleys are arranged on the pulley seat, a mounting cavity with an upward opening is arranged on the pulley seat, and a rotatable adjusting nut is arranged in the mounting cavity. A thrust ball bearing is mounted between the bottom of the adjusting nut and the bottom of the mounting cavity; a worm wheel face is arranged on the top face of the adjusting nut, and an adjusting worm in transmission connection with the worm wheel face is further installed in the pulley base. The fixed hanging piece is provided with a rotating screw, the rotating screw is in threaded connection with the adjusting nut, and the thrust ball bearing is adopted, so that the friction force between the adjusting nut and the bottom of the mounting cavity is effectively reduced, the force required for adjustment can be greatly reduced, and the problems of tooth loss and tooth loosening are solved; and debugging by an installation worker can be more convenient.

Description

Technical Field

[0001] The utility model relates to a sliding door, in particular to a pulley block with smooth adjustment. Background Art

[0002] The existing sliding door generally has a pulley block installed on the top of the glass door, which is hung on the slide rail through the pulley block to achieve the effect of sliding the door open. Due to factors such as installation error and adjustment, the heights of the doors on the left and right sides will be different. Therefore, it is necessary to adjust the distance between the pulley block and the glass door to make the glass door flush. The existing pulley block generally includes a pulley member slidably installed on the slide rail and an adjusting seat installed on the top surface of the door. The pulley member and the adjusting seat are connected by a rotating screw. An adjusting nut that cooperates with the rotating screw is arranged on the pulley member. When the rotating screw is rotated, the positions of the pulley member and the adjusting seat are changed, thereby playing the role of adjusting the sliding door. A worm gear surface is arranged at the bottom of the rotating screw, and an adjusting worm that cooperates with the worm gear surface transmission is arranged on the side wall of the adjusting seat. The rotating screw can be rotated by rotating the adjusting worm. However, since the sliding door itself has a large mass, this will greatly increase the friction between the various adjusting members, which will not only increase the difficulty of adjustment, but also easily cause tooth loss and tooth slippage, causing damage to the adjusting worm and the worm gear surface. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a pulley block with smooth adjustment.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A pulley block with smooth adjustment comprises a pulley seat and a fixed hanger installed on the top of a sliding door, a plurality of pulleys are installed on the pulley seat, a mounting cavity opening upward is provided on the pulley seat, a rotatable adjusting nut is installed in the mounting cavity, a thrust ball bearing is installed between the bottom of the adjusting nut and the bottom of the mounting cavity; a worm gear surface is provided on the top surface of the adjusting nut, and an adjusting worm connected to the worm gear surface in a transmission manner is also installed in the pulley seat; a rotating screw is provided on the fixed hanger, and the rotating screw is threadedly connected to the adjusting nut.

[0006] The pulley seat is provided with an installation channel communicated with the installation cavity, and the adjusting worm is rotatably installed in the installation channel.

[0007] The installation channel is inclined downward from the installation cavity toward the outside.

[0008] The left side of the pulley seat is an inclined surface parallel to the end surface of the adjusting worm.

[0009] The pulley seat is provided with an internal thread portion communicated with the installation channel, and an anti-loosening screw is installed on the internal thread portion, and the end of the anti-loosening screw is in contact with the adjusting worm.

[0010] The rotating screw and the fixing hanger are an integral structure.

[0011] The beneficial effects of the utility model are as follows: an installation cavity with an opening upward is provided on the pulley seat, a rotatable adjusting nut is installed in the installation cavity, a thrust ball bearing is installed between the bottom of the adjusting nut and the bottom of the installation cavity; a worm gear surface is provided on the top surface of the adjusting nut, and an adjusting worm connected to the worm gear surface is also installed in the pulley seat; a rotating screw is provided on the fixed hanger, and the rotating screw is threadedly connected to the adjusting nut, and a thrust ball bearing is adopted, so as to effectively reduce the friction between the adjusting nut and the bottom of the installation cavity, and can greatly reduce the force required for adjustment, thereby solving the problem of missing teeth and slipping teeth. At the same time, the adjusting worm is tilted downward as a whole, which can make it more convenient for installation workers to debug. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 Is a cross-sectional view of the utility model;

[0016] Figure 4 It is a partial cross-sectional view of the pulley seat. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0018] It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention.

[0019] Some embodiments of the present invention are described below in conjunction with the accompanying drawings.

[0020] Reference Figure 1-4, a pulley block with smooth adjustment, comprising a pulley seat 1 and a fixed hanger 4 installed on the top of the sliding door, a plurality of pulleys 2 are installed on the pulley seat 1, a mounting cavity 3 with an opening upward is provided on the pulley seat 1, a rotatable adjusting nut 5 is installed in the mounting cavity 3, and a thrust ball bearing 8 is installed between the bottom of the adjusting nut 5 and the bottom of the mounting cavity 3; a worm gear surface 6 is provided on the top surface of the adjusting nut 5, and an adjusting worm 7 drivingly connected to the worm gear surface 6 is also installed in the pulley seat 1; a rotating screw 9 is provided on the fixed hanger 4, and the rotating screw 9 is threadedly connected to the adjusting nut 5, and a thrust ball bearing is used, so as to effectively reduce the friction between the adjusting nut and the bottom of the mounting cavity, and can greatly reduce the force required for adjustment, thereby solving the problem of tooth loss and slipping between the adjusting worm 7 and the worm gear surface 6.

[0021] The pulley seat 1 is provided with an installation channel 10 connected with the installation cavity 3. The adjusting worm 7 is rotatably installed in the installation channel 10. The installation channel 10 is inclined downward from the installation cavity 3 to the outside. The left side of the pulley seat 1 is an inclined surface parallel to the end face of the adjusting worm 7, so that the adjusting worm 7 is inclined downward as a whole, which can make it more convenient for installation workers to debug.

[0022] The pulley seat 1 is provided with an internal threaded portion 11 communicating with the installation channel 10 , and a locking screw 12 is installed on the internal threaded portion 11 , and an end of the locking screw 12 is in contact with the adjusting worm 7 .

[0023] The adjusting worm 7 is provided with an annular groove, and the end of the anti-loosening screw 12 is inserted into the annular groove, which can prevent the adjusting worm 7 from withdrawing.

[0024] The bottom of the annular groove is provided with a plurality of semicircular recessed holes arranged in the circumferential direction, and the end of the anti-loosening screw 12 is provided with a convex point corresponding to the semicircular recessed hole. The convex point is inserted into the semicircular recessed hole to prevent the adjusting worm 7 from rotating, thereby preventing the adjusting worm 7 from rotating, and further preventing the sliding door from changing in height during daily use.

[0025] The rotating screw 9 and the fixing hanger 4 are an integral structure.

[0026] In the present invention, the term "plurality" means two or more than two, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more related listed items. The terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "connect" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0027] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed on" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0028] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pulley assembly with smooth adjustment, comprising a pulley seat (1) and a fixed hanger (4) installed on the top of a sliding door, wherein a plurality of pulleys (2) are installed on the pulley seat (1), characterized in that The pulley seat (1) is provided with a mounting cavity (3) with an opening facing upward, a rotatable adjusting nut (5) is mounted in the mounting cavity (3), and a thrust ball bearing (8) is mounted between the bottom of the adjusting nut (5) and the bottom of the mounting cavity (3); a worm gear surface (6) is provided on the top surface of the adjusting nut (5), and an adjusting worm (7) drivingly connected to the worm gear surface (6) is also mounted in the pulley seat (1); a rotating screw (9) is provided on the fixing hanger (4), and the rotating screw (9) is threadedly connected to the adjusting nut (5).

2. The pulley assembly with smooth adjustment according to claim 1, characterized in that The pulley seat (1) is provided with a mounting channel (10) which is in communication with the mounting cavity (3), and the adjusting worm (7) is rotatably mounted in the mounting channel (10).

3. The pulley assembly with smooth adjustment according to claim 2, characterized in that The installation channel (10) is in a structure that is inclined downward from the installation cavity (3) toward the outside.

4. The pulley assembly with smooth adjustment according to claim 3, characterized in that The left side of the pulley seat (1) is an inclined surface parallel to the end surface of the adjusting worm (7).

5. The smoothly adjustable pulley assembly according to claim 2, characterized in that The pulley seat (1) is provided with an internal threaded portion (11) which is in communication with the mounting channel (10), and a locking screw (12) is mounted on the internal thread of the internal threaded portion (11), and an end of the locking screw (12) is in contact with the adjusting worm (7).

6. The smoothly adjustable pulley assembly according to claim 1, characterized in that The rotating screw (9) and the fixing hanger (4) are an integral structure.

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