Adjustable and lockable pulley bracket

Abstract

A pulley bracket that is adjustable and lockable to prevent loosening, comprising a pulley seat and an adjusting screw, wherein the pulley seat is provided with a rotating groove and a driving groove connected to the rotating groove, a rotating nut is rotatably installed in the rotating groove, an adjusting screw hole is provided on the rotating nut, and the upper end thread of the adjusting screw is engaged with the adjusting screw hole; an adjusting shaft that is transmission-matched with the rotating nut is rotatably installed in the driving groove; a locking piece for locking the adjusting shaft so that the adjusting shaft cannot rotate is installed on the pulley seat, and the locking piece can abut and separate from the adjusting shaft by moving on the pulley seat. The utility model utilizes a locking piece to abut and lock the adjusting shaft, so that the adjusting shaft synchronously limits the rotation of the rotating nut, thereby preventing the rotating nut from loosening, thereby reducing the probability of the rotating nut rotating relative to the adjusting screw due to vibration, effectively ensuring the stability of the adjusting screw after adjusting the height, and providing a strong guarantee for the normal use of the door body.

Description

Technical Field

[0001] The utility model relates to the technical field of pulleys, in particular to an adjustable and lockable pulley bracket. Background Art

[0002] The installation and debugging of suspended sliding doors are more troublesome. When the sliding door is installed in conjunction with the track, the supporting pulley device and the buffer pulley device are generally fixed to the door body through a hanger. In order to allow the pulleys of the supporting pulley device and the buffer pulley device to enter the track smoothly, it is necessary to adjust the distance between the pulley and the door body so that the door body and the door frame can be better matched together to avoid abnormal movement of the door body.

[0003] Referring to the Chinese patent CN201821471900.4, the pulley seat of the existing supporting pulley device or the buffer pulley device is usually provided with a matching hole, a nut is provided in the matching hole, and a screw is provided on the top of the door body hanger. The upper end of the screw is inserted into the matching hole and adapted in the screw hole of the nut. When the height position of the door body needs to be adjusted, the adjusting shaft is rotated to drive the nut to rotate, which can drive the screw to move vertically, thereby realizing the adjustment of the height of the door body.

[0004] However, since the door body will vibrate when it moves, it is easy for the nut to rotate and cause the screw to move downward, causing the bottom of the door body to sink and contact the ground or the ground track on the ground and generate friction, which is easy to cause jamming and friction noise during the movement of the door body, affecting the normal movement of the door body. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an adjustable and lockable pulley bracket.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] An adjustable and lockable pulley bracket comprises a pulley seat and an adjusting screw, wherein the pulley seat is provided with a rotating groove and a driving groove connected to the rotating groove, a rotating nut is rotatably installed in the rotating groove, an adjusting screw hole is provided on the rotating nut, an upper end thread of the adjusting screw is engaged with the adjusting screw hole, and the adjusting screw moves vertically based on the rotation of the rotating nut;

[0008] An adjusting shaft is rotatably installed in the driving groove and is in transmission cooperation with the rotating nut. When the adjusting shaft rotates, the rotating nut is driven to rotate. The characteristics are:

[0009] A locking piece is installed on the pulley seat for locking the adjusting shaft so that the adjusting shaft cannot rotate. The locking piece can abut against and separate from the adjusting shaft by moving on the pulley seat.

[0010] In the utility model, a limiting convex portion is provided in the driving groove for limiting the movement of the adjusting shaft along the extending direction of the driving groove, and a limiting ring groove is provided on the outer peripheral surface of the adjusting shaft, and the limiting convex portion extends into the limiting ring groove.

[0011] In the utility model, a rotating toothed disc is provided at the upper end of the rotating nut, and a driving toothed disc meshing with the rotating toothed disc is provided at one end of the adjusting shaft facing the rotating nut;

[0012] Alternatively, a rotating toothed disc is provided at the lower end of the rotating nut, and a driving toothed disc meshing with the rotating toothed disc is provided at one end of the adjusting shaft facing the rotating nut.

[0013] In the utility model, a locking groove connected to the driving groove is provided on the pulley seat, and the end of the locking groove away from the driving groove passes through the pulley seat, an internal thread is provided inside the locking groove, the locking piece is arranged in the locking groove, and an external thread adapted to the internal thread is provided on the outer peripheral surface of the locking piece.

[0014] In the utility model, a glue curing layer in contact with the locking piece may be provided in the locking groove.

[0015] In the utility model, an upper avoidance hole connected to the upper end of the rotating groove and a lower avoidance hole connected to the lower end of the rotating groove are provided in the pulley seat. The upper avoidance hole penetrates upward through the top end of the pulley seat, and the lower avoidance hole penetrates downward through the bottom end of the pulley seat. Both the upper avoidance hole and the lower avoidance hole are used to avoid the adjusting screw.

[0016] In the utility model, the pulley seat is composed of a first seat body and a second seat body which are arranged opposite to each other, the first seat body is provided with a first matching surface, and the second seat body is provided with a second matching surface;

[0017] The locking groove is provided on the first seat body or the second seat body;

[0018] The first mating surface is provided with a first rotation half groove, and the second mating surface is provided with a second rotation half groove. When the first mating surface and the second mating surface are in contact with each other, the first rotation half groove and the second rotation half groove constitute the rotation groove.

[0019] In the utility model, the first mating surface is provided with a first driving half groove, and the second mating surface is provided with a second driving half groove. When the first mating surface and the second mating surface are in contact with each other, the first driving half groove and the second driving half groove form the driving groove.

[0020] In the utility model, a first upper half groove is provided on the first mating surface, and a second upper half groove is provided on the second mating surface. When the first mating surface and the second mating surface are in contact with each other, the first upper half groove and the second upper half groove form the upper avoidance hole.

[0021] In the utility model, a first lower half groove is provided on the first mating surface, and a second lower half groove is provided on the second mating surface. When the first mating surface and the second mating surface are in contact with each other, the first lower half groove and the second lower half groove form the lower avoidance hole.

[0022] Beneficial effects of the utility model: the utility model is provided with a locking piece for locking the adjustment shaft on the pulley seat. When adjusting the height of the door body, the locking piece is first loosened to separate the locking piece from the adjustment shaft, and then the adjustment shaft is rotated to drive the rotating nut to rotate and the rotating nut to drive the adjusting screw to move vertically, thereby controlling the height position of the adjusting screw to achieve the adjustment of the height position of the door body. When the height of the door body is adjusted, the locking piece is tightened again to make the locking piece abut against the locking adjustment shaft, so that the adjustment shaft synchronously limits the rotation of the rotating nut, thereby preventing the rotating nut from loosening, thereby reducing the probability of the rotating nut rotating relative to the adjusting screw due to vibration, effectively ensuring the stability of the adjusting screw after adjusting the height, and providing a strong guarantee for the normal use of the door body. In addition, a glue curing layer in contact with the locking piece can be provided in the locking groove, thereby preventing the locking piece from rotating, and ensuring the stability of the locking piece locking the adjusting shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Figure 1 A three-dimensional diagram of a pulley bracket installed on a buffer pulley device;

[0025] Figure 2 It is a three-dimensional diagram of the connection between the pulley bracket and the sling;

[0026] Figure 3 This is an exploded view of the pulley bracket;

[0027] Figure 4 It is a schematic diagram of the position distribution of the rotating nut, the adjusting shaft and the locking member on the second seat body;

[0028] Figure 5 Exploded view of the pulley bracket, the first pulley block and the second pulley block. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0030] The pulley bracket disclosed in the utility model can be applied to a buffer pulley device with a buffer module, and can also be applied to a support pulley device without a buffer module, and can be specifically set according to the application scenario.

[0031] Reference Figure 1-5 This embodiment takes the installation of a pulley bracket on a buffer pulley device as an example, and discloses an adjustable and lockable pulley bracket, wherein the pulley bracket includes a pulley seat 1 and an adjusting screw 3 for connecting a hanger 2; the hanger 2 includes a hanger seat 21, and a clamp seat 22 installed on the outside of the hanger seat 21 by bolts, and a door body clamping position for clamping a door body is formed between the hanger seat 21 and the clamp seat 22. The lower end of the adjusting screw 3 is fixedly connected to the hanger seat 21, and the hanger 2 is a prior art, so it is not described in detail.

[0032] Furthermore, the pulley seat 1 is provided with a rotation groove and a driving groove connected to the rotation groove, a rotation nut 4 is rotatably installed in the rotation groove, an adjusting screw hole 41 is provided on the rotation nut 4, the upper end thread of the adjusting screw 3 is engaged in the adjusting screw hole 41, and the adjusting screw 3 moves vertically based on the rotation of the rotating nut 4;

[0033] Furthermore, an adjusting shaft 5 that is in transmission cooperation with the rotating nut 4 is rotatably installed in the driving groove, and the rotating nut 4 is driven to rotate when the adjusting shaft 5 rotates; the end of the driving groove away from the rotating groove passes through the pulley seat 1, and the end of the adjusting shaft 5 away from the rotating nut 4 is provided with a first spanner groove 50 for cooperating with a spanner, and the cross-sectional shape of the first spanner groove 50 is hexagonal, cross-shaped or straight-shaped. The installer uses a spanner to cooperate with the first spanner groove 50, thereby driving the adjusting shaft 5 to rotate through the spanner, so that when the adjusting shaft 5 rotates, the rotating nut 4 is linked to rotate to control the vertical movement of the adjusting screw 3, so as to adjust the height position of the sling 2.

[0034] Furthermore, the pulley seat 1 is provided with a locking member 6 for locking the adjusting shaft 5 so that the adjusting shaft 5 cannot rotate. The locking member 6 can be brought into contact with and separated from the adjusting shaft 5 by moving on the pulley seat 1. When the locking member 6 is brought into contact with the adjusting shaft 5 and the locking member 6 is tightened, the adjusting shaft 5 cannot rotate. Specifically, the pulley seat 1 is provided with a locking groove 14 connected to the driving groove. The end of the locking groove 14 away from the driving groove passes through the pulley seat 1. The locking groove 14 is provided with an internal thread. The locking member 6 is provided in the locking groove 14. The outer peripheral surface of the locking member 6 is provided with an external thread adapted to the internal thread. In addition, a second wrench groove for cooperating with a wrench is provided on one end of the locking member 6. The second wrench groove is hexagonal, so as to cooperate with the hexagonal wrench, so that the installer can loosen or tighten the locking member 6. In this embodiment, the locking member 6 is directly formed by a top screw.

[0035] When adjusting the height of the door body, first loosen the locking member 6 to separate the locking member 6 from the adjusting shaft 5, and then rotate the adjusting shaft 5 to make the adjusting shaft 5 drive the rotating nut 4 to rotate and the rotating nut 4 drive the adjusting screw 3 to move vertically, thereby controlling the height position of the adjusting screw 3 to achieve the adjustment of the height position of the door body. When the height of the door body is adjusted, tighten the locking member 6 again to make the locking member 6 abut against the locking adjusting shaft 5, so that the adjusting shaft 5 synchronously limits the rotation of the rotating nut 4, thereby preventing the rotating nut 4 from loosening, thereby preventing the rotating nut 4 from rotating relative to the adjusting screw 3 due to vibration. In addition, a glue curing layer in contact with the locking member 6 may be provided in the locking groove 14, and the glue curing layer is formed by curing the anti-loosening glue filled between the locking groove 14 and the locking member 6, thereby preventing the locking member 6 from rotating, and ensuring the stability of the locking member 6 locking the adjusting shaft 5.

[0036] As a preferred embodiment, a limiting protrusion 13 is provided in the driving groove for limiting the movement of the adjusting shaft 5 along the extension direction of the driving groove, and a limiting ring groove 51 is provided on the outer peripheral surface of the adjusting shaft 5. The limiting protrusion 13 extends into the limiting ring groove 51, thereby limiting the movement of the adjusting shaft 5 along the extension direction of the driving groove, preventing the adjusting shaft 5 from falling out of the driving groove, and ensuring the stability of the adjusting shaft 5 in use.

[0037] As a preferred embodiment, a rotating toothed disc 42 is integrally formed at the upper end of the rotating nut 4, and a driving toothed disc 52 meshing with the rotating toothed disc 42 is provided on the end of the adjusting shaft 5 facing the rotating nut 4. When the adjusting shaft 5 rotates, the driving toothed disc 52 drives the rotating toothed disc 42 to rotate synchronously to realize the rotation of the rotating nut 4. In this embodiment, the rotating toothed disc 42 is integrally formed at the upper end of the rotating nut 4, so as to avoid the gravity of the rotating nut 4 acting on the rotating toothed disc 42 and causing serious friction between the rotating toothed disc 42 and the rotating groove. Of course, it is not limited to the above structure. In other embodiments, a rotating toothed disc 42 can also be provided at the lower end of the rotating nut 4, and a driving toothed disc 52 meshing with the rotating toothed disc 42 is provided on the end of the adjusting shaft 5 facing the rotating nut 4. When the adjusting shaft 5 rotates, the driving toothed disc 52 drives the rotating toothed disc 42 to rotate synchronously to realize the rotation of the rotating nut 4.

[0038] As a preferred embodiment, the pulley seat 1 is provided with an upper avoidance hole connected to the upper end of the rotating groove and a lower avoidance hole connected to the lower end of the rotating groove, the apertures of the upper avoidance hole and the lower avoidance hole are both larger than the maximum diameter of the adjusting screw 3, wherein the upper avoidance hole penetrates upward through the top end of the pulley seat 1, and the lower avoidance hole penetrates downward through the bottom end of the pulley seat 1, and the upper avoidance hole and the lower avoidance hole are both used to avoid the adjusting screw 3, so that the adjusting screw 3 can move vertically smoothly relative to the pulley seat 1.

[0039] As a preferred embodiment, in order to facilitate the processing of structures such as the rotating groove, the driving groove and the locking groove 14 on the pulley seat 1 and to facilitate the installation of various components on the pulley seat 1, the pulley seat 1 is composed of a first seat body 11 and a second seat body 12 arranged opposite to each other, and the first seat body 11 is provided with a first mating surface 110, and the second seat body 12 is provided with a second mating surface 120. When the first mating surface 110 and the second mating surface 120 are in contact with each other, the first seat body 11 and the second seat body 12 constitute the pulley seat 1; the locking groove 14 is provided on the first seat body 11 or the second seat body 12, and preferably, the locking groove 14 is provided on the first seat body 11.

[0040] Furthermore, the first mating surface 110 is provided with a first plug-in portion 111 and a second plug-in portion 112, and the first plug-in portion 111 and the second plug-in portion 112 are respectively located at the front end and the rear end of the first mating surface 110, and the second mating surface 120 is provided with a first slot 121 for adapting to the first plug-in portion 111 and a second slot 122 for adapting to the second plug-in portion 112; when the first mating surface 110 and the second mating surface 120 are fitted with each other, one of the first plug-in portions 111 is inserted and fitted into a first slot 121, and one of the second plug-in portions 112 is inserted and fitted into a second slot 122, thereby realizing the positioning combination between the first seat body 11 and the second seat body 12. In addition, one end of the first slot 121 and the second slot 122 passes through the second mating surface 120, and the other end passes through the side of the second base body 12 facing away from the second mating surface 120. Connecting screw holes can be set on the first insertion part 111 and the second insertion part 112, and the screw section of the connecting bolt is threadedly connected from the connecting screw hole corresponding to the position of the first slot 121 or the second slot 122, thereby enhancing the combination quality between the first base body 11 and the second base body 12.

[0041] As a preferred embodiment, the rotation groove, the upper avoidance hole and the lower avoidance hole are all located between the first insertion part 111 and the second insertion part 112, the first mating surface 110 is provided with a first rotation half-groove 113, and the second mating surface 120 is provided with a second rotation half-groove 123; when the first mating surface 110 and the second mating surface 120 are in contact with each other, the first rotation half-groove 113 and the second rotation half-groove 123 constitute the rotation groove.

[0042] Furthermore, the first mating surface 110 is provided with a first driving half groove 114, and the second mating surface 120 is provided with a second driving half groove 124. When the first mating surface 110 and the second mating surface 120 are in contact with each other, the first driving half groove 114 and the second driving half groove 124 form the driving groove; the first driving half groove 114 and / or the second driving half groove 124 are provided with the limiting protrusion 13, so that when the first driving half groove 114 and the second driving half groove 124 form the driving groove, the limiting protrusion 13 is directly formed in the driving groove.

[0043] Furthermore, a first upper half groove 115 is provided on the first mating surface 110, and a second upper half groove 125 is provided on the second mating surface 120. When the first mating surface 110 and the second mating surface 120 are in contact with each other, the first upper half groove 115 and the second upper half groove 125 form the upper avoidance hole.

[0044] Furthermore, a first lower half groove 116 is provided on the first mating surface 110, and a second lower half groove 126 is provided on the second mating surface 120. When the first mating surface 110 and the second mating surface 120 are in contact with each other, the first lower half groove 116 and the second lower half groove 126 form the lower avoidance hole.

[0045] As a preferred embodiment, the pulley seat 1 is provided with a first pulley group 7 and a second pulley group 8, the first pulley group 7 includes two first rollers 72 respectively installed on the left and right sides of the pulley seat 1 through a first wheel axle 71; the second pulley group 8 includes two second rollers 82 respectively installed on the left and right sides of the pulley seat 1 through a second wheel axle 81.

[0046] Furthermore, each of the first seat body 11 and the second seat body 12 is provided with a first shaft hole 15 penetrating from left to right, the first shaft hole 15 of the first seat body 11 corresponds to the first shaft hole 15 of the second seat body 12, and both ends of the first wheel shaft 71 respectively pass through the first shaft hole 15 of the first seat body 11 and the first shaft hole 15 of the second seat body 12, and are respectively connected to a first roller 72. In this embodiment, the first wheel shaft 71 is riveted to mount the first roller 72 on the pulley seat 1.

[0047] Furthermore, a second axle 81 is integrally formed on the outer side of the first seat body 11 and the outer side of the second seat body 12, and the second axle 81 on the first seat body 11 and the second axle 81 of the second seat body 12 are respectively installed with a second roller 82, so that the pulley seat 1, the first pulley group 7 and the second pulley group 8 are combined together.

[0048] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. An adjustable and lockable pulley bracket, comprising a pulley seat (1) and an adjusting screw (3), the pulley seat (1) being provided with a rotation groove and a driving groove connected to the rotation groove, a rotating nut (4) being rotatably mounted in the rotation groove, the rotating nut (4) being provided with an adjusting screw hole (41), the upper end of the adjusting screw (3) being threadedly engaged in the adjusting screw hole (41), and the adjusting screw (3) being vertically moved based on the rotation of the rotating nut (4); An adjusting shaft (5) is rotatably mounted in the driving groove and is in transmission cooperation with the rotating nut (4). When the adjusting shaft (5) rotates, it drives the rotating nut (4) to rotate. The characteristics are as follows: A locking member (6) is mounted on the pulley seat (1) for locking the adjusting shaft (5) so that the adjusting shaft (5) cannot rotate. The locking member (6) can abut against and separate from the adjusting shaft (5) by moving on the pulley seat (1).

2. The adjustable and lockable pulley bracket according to claim 1, characterized in that: A limiting convex portion (13) is provided in the driving groove for limiting the movement of the adjusting shaft (5) along the extension direction of the driving groove. A limiting annular groove (51) is provided on the outer peripheral surface of the adjusting shaft (5), and the limiting convex portion (13) extends into the limiting annular groove (51).

3. The adjustable and lockable pulley bracket according to claim 1, characterized in that: A rotating toothed disc (42) is provided at the upper end of the rotating nut (4), and a driving toothed disc (52) meshing with the rotating toothed disc (42) is provided at one end of the adjusting shaft (5) facing the rotating nut (4); Alternatively, a rotating toothed disc (42) is provided at the lower end of the rotating nut (4), and a driving toothed disc (52) meshing with the rotating toothed disc (42) is provided at one end of the adjusting shaft (5) facing the rotating nut (4).

4. The adjustable and lockable pulley bracket according to claim 1, characterized in that: The pulley seat (1) is provided with a locking groove (14) connected to the driving groove, the locking groove (14) having an end away from the driving groove passing through the pulley seat (1), an internal thread is provided inside the locking groove (14), the locking member (6) is arranged in the locking groove (14), and an external thread matching the internal thread is provided on the outer peripheral surface of the locking member (6).

5. The adjustable and lockable pulley bracket according to claim 4, characterized in that: A glue curing layer in contact with the locking member (6) may be provided in the locking groove (14).

6. The adjustable and lockable pulley bracket according to claim 4, characterized in that: An upper avoidance hole communicating with the upper end of the rotating groove and a lower avoidance hole communicating with the lower end of the rotating groove are provided in the pulley seat (1); the upper avoidance hole passes through the top end of the pulley seat (1) upwards, and the lower avoidance hole passes through the bottom end of the pulley seat (1) downwards; the upper avoidance hole and the lower avoidance hole are both used to avoid the adjusting screw (3).

7. The adjustable and lockable pulley bracket according to claim 6, characterized in that: The pulley seat (1) is composed of a first seat body (11) and a second seat body (12) which are arranged opposite to each other; the first seat body (11) is provided with a first mating surface (110), and the second seat body (12) is provided with a second mating surface (120); The locking groove (14) is provided on the first seat body (11) or the second seat body (12); The first mating surface (110) is provided with a first rotational half groove (113), and the second mating surface (120) is provided with a second rotational half groove (123); when the first mating surface (110) and the second mating surface (120) are in contact with each other, the first rotational half groove (113) and the second rotational half groove (123) form the rotational groove.

8. The adjustable and lockable pulley bracket according to claim 7, characterized in that: The first mating surface (110) is provided with a first driving half groove (114), and the second mating surface (120) is provided with a second driving half groove (124); when the first mating surface (110) and the second mating surface (120) are in contact with each other, the first driving half groove (114) and the second driving half groove (124) form the driving groove.

9. The adjustable and lockable pulley bracket according to claim 7, characterized in that: A first upper half groove (115) is provided on the first mating surface (110), and a second upper half groove (125) is provided on the second mating surface (120); when the first mating surface (110) and the second mating surface (120) are in contact with each other, the first upper half groove (115) and the second upper half groove (125) form the upper avoidance hole.

10. The adjustable and lockable pulley bracket according to claim 7, characterized in that: A first lower half groove (116) is provided on the first mating surface (110), and a second lower half groove (126) is provided on the second mating surface (120); when the first mating surface (110) and the second mating surface (120) are in contact with each other, the first lower half groove (116) and the second lower half groove (126) form the lower avoidance hole.

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