Hanging rack device

By designing a hanger device including screws and transmissions, the tilt problem of TV hangers due to the inclination of wall panels is solved, convenient angle adjustment is achieved, and user experience is improved.

CN120444507APending Publication Date: 2025-08-08BESTQI INNOVATION TECH (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202510415316.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-03
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

When the wall panel is not installed flat, the TV will be tilted, the user experience will be poor, and the adjustment will be difficult. It usually requires disassembly and reinstallation.

Method used

A hanger device is designed, including a fixing frame, hanger and height adjustment mechanism. Through the combination of screw, active transmission and driven transmission, the hanger is conveniently lifted and lowered, and the horizontal angle of the display device is adjusted.

Benefits of technology

By rotating the active transmission, it is converted into vertical rotation of the screw, which can easily lift and lower the hanger, simplify the TV angle adjustment process, and improve user operation convenience and viewing experience.

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Abstract

The invention relates to the technical field of display equipment mounting accessories, and discloses a hanger device which comprises a fixing frame, at least two hangers and at least one height adjusting mechanism, and the at least two hangers are distributed on the fixing frame at intervals in the horizontal direction; the at least two hangers are used for mounting display equipment; the height adjusting mechanism comprises a guide block and a transmission assembly, the guide block is installed on the fixing frame and keeps static relative to the fixing frame, the transmission assembly comprises a lead screw, a driving transmission piece and a driven transmission piece, the lead screw is arranged in the vertical direction, one end of the lead screw is in threaded connection with the guide block, and the other end of the lead screw is connected with the driven transmission piece. The driven transmission part is in transmission connection with the driving transmission part, the driven transmission part is used for converting rotation of the driving transmission part around the horizontal axis into rotation around the vertical axis, then the lead screw is driven to rotate, the hanging frame ascends and descends in the vertical direction relative to the guide block along with rotation of the lead screw, and therefore the horizontal angle of the display device can be conveniently adjusted.
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Description

Technical Field

[0001] The present invention relates to the technical field of display device mounting accessories, and in particular to a hanging rack device. Background Art

[0002] With the continuous improvement of living standards, more and more users choose to hang display devices such as televisions on the wall through hanging devices.

[0003] In the related art, most TV mounts typically consist of a wall plate and two brackets. The wall plate is mounted on the wall, and the two brackets, one on the left and one on the right, clip onto the wall plate and connect to the TV. However, during the actual installation of the wall plate, the wall plate may tilt due to installation errors, causing one bracket to be higher than the other. This can cause the TV to tilt after being mounted on the bracket, affecting the user experience.

[0004] Currently, for most TV mounts, if the wall panels are installed at an angle, a common method is to dismantle the wall panels and then reinstall them, which is troublesome. Summary of the Invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a hanging bracket device that can conveniently adjust the horizontal angle of a display device.

[0006] According to an embodiment of the present invention, the hanging bracket device includes a fixed bracket, at least two hanging brackets and at least one height adjustment mechanism, at least two hanging brackets are distributed on the fixed bracket at intervals in the horizontal direction; at least two hanging brackets are used to install display devices; the height adjustment mechanism includes a guide block and a transmission assembly, the guide block is installed on the fixed bracket and remains stationary relative to the fixed bracket, the transmission assembly includes a screw rod, an active transmission member and a driven transmission member, the screw rod is arranged in the vertical direction, one end of the screw rod is threadedly connected to the guide block, and the other end of the screw rod is connected to the driven transmission member, the driven transmission member is connected to the active transmission member, and the driven transmission member is used to convert the rotation of the active transmission member around the horizontal axis into rotation around the vertical axis, thereby driving the screw rod to rotate, and the hanging bracket rises and falls in the vertical direction relative to the guide block as the screw rod rotates.

[0007] The hanger device according to the embodiment of the present invention has at least the following beneficial effects: by connecting at least one hanger to a fixed frame via a height adjustment mechanism, the height adjustment mechanism can raise and lower the hanger to adjust the horizontal angle of the display device to meet different viewing needs of users. By threading one end of a screw rod arranged in a vertical direction to a guide block and the other end to a driven transmission member that is transmission-connected to the active transmission member, the driven transmission member can convert the rotation of the active transmission member about the horizontal axis into rotation about the vertical axis, thereby driving the screw rod to rotate. The hanger can be raised and lowered in the vertical direction relative to the guide block with the rotation of the screw rod, thereby driving the hanger to be raised and lowered by rotating the active transmission member, thereby adjusting the horizontal angle of the display device. Compared with the method of adjusting the horizontal angle of the display device by removing the wall panel in the related art, the hanger device of the embodiment of the present application can convert the rotation about the horizontal axis into rotation about the vertical axis through the cooperation of the driven transmission member and the active transmission member, so that an external force is applied in the horizontal direction to drive the active transmission member to rotate, thereby conveniently adjusting the vertical height of the hanger, thereby adjusting the horizontal angle of the display device, and making user operation more convenient.

[0008] According to some embodiments of the present invention, the height adjustment mechanism also includes a force output shaft and a knob. The force output shaft is rotatably connected to the bracket and is arranged along the horizontal axis. The knob is connected to the force output shaft and is used to drive the force output shaft to rotate under the action of external force.

[0009] According to some embodiments of the present invention, the bracket device also includes a planetary gear set, which is connected to the bracket; the power input end of the planetary gear set is connected to the force output shaft, and the power output end of the planetary gear set is transmission-connected to the active transmission member; the planetary gear set is used to transmit the rotational power of the force output shaft to the active transmission member to drive the active transmission member to rotate.

[0010] According to some embodiments of the present invention, the height adjustment mechanism further includes a traction rope and a rotating disk, wherein the rotating disk is rotatably connected to the hanger around a horizontal axis; the traction rope is used to receive external traction force to drive the rotating disk to rotate, thereby driving the active transmission member to rotate.

[0011] According to some embodiments of the present invention, the bracket device also includes a planetary gear set, which is connected to the bracket; the rotating disk is connected to the active transmission member through the planetary gear set, the power input end of the planetary gear set is connected to the rotating disk, and the power output end of the planetary gear set is connected to the active transmission member; the planetary gear set is used to transmit the rotational power of the rotating disk to the active transmission member to drive the active transmission member to rotate.

[0012] According to some embodiments of the present invention, the planetary gear assembly includes an inner ring gear, a central gear and a plurality of planetary gears, the driving transmission member is the driving gear, and the driven transmission member is the driven gear meshing with the driving gear; the inner ring gear is connected to the bracket; the central gear is the power input end of the planetary gear set, and the plurality of planetary gears are the power output ends of the planetary gear set; a plurality of connecting columns are convexly provided on the end face of the driving gear, each planetary gear is rotatably connected to a connecting column, and the plurality of planetary gears are respectively meshed between the inner ring gear and the central gear.

[0013] According to some embodiments of the present invention, the traction rope includes a flexible rope and a plurality of pull beads, and the plurality of pull beads are distributed at intervals on the flexible rope; a plurality of drive teeth are formed on the outer periphery of the rotating disk, and the plurality of drive teeth are distributed at intervals along the circumference of the rotating disk; a pull bead is arranged between at least two adjacent drive teeth, and the flexible rope is used to receive external traction force to drive the pull beads to push the drive teeth to drive the rotating disk to rotate.

[0014] According to some embodiments of the present invention, the screw rod is rotatably mounted on the hanger around a vertical axis via a locking structure, and the locking structure is used to limit relative movement of the screw rod and the hanger in the vertical direction.

[0015] According to some embodiments of the present invention, the locking structure includes a limiting member and an annular groove recessed on the outer periphery of the screw rod. The limiting member is fixedly connected to the hanger, and the limiting member partially extends into the annular groove. The screw rod can rotate around the vertical axis relative to the limiting member.

[0016] According to some embodiments of the present invention, the number of the hanging racks and the number of the height adjustment mechanisms are both two, and each hanging rack is liftably connected to the fixing rack via a height adjustment mechanism.

[0017] According to some embodiments of the present invention, the driving transmission member and the driven transmission member are two bevel gears; or, one of the driving transmission member and the driven transmission member is a bevel gear and the other is a spur gear; or, one of the driving transmission member and the driven transmission member is a worm and the other is a turbine.

[0018] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0020] Figure 1 A schematic diagram of the installation structure of a hanger device and a display device provided in an embodiment of the present invention is shown;

[0021] Figure 2 A schematic structural diagram of a rack device provided by an embodiment of the present invention is shown;

[0022] Figure 3 A partial structural schematic diagram of a height adjustment mechanism provided by another embodiment of the present invention is shown;

[0023] Figure 4 Shown Figure 3 A partial structural diagram of the mid-height adjustment mechanism from another perspective;

[0024] Figure 5 FIG2 shows a schematic diagram of the exploded structure of a height adjustment mechanism provided by another embodiment of the present invention;

[0025] Figure 6 Shown Figure 5 Schematic diagram of the cross-section structure of the mid-height adjustment mechanism.

[0026] Reference numerals:

[0027] Hanging rack device 100; fixing rack 110;

[0028] Hanger 130; extension portion 135; mounting through hole 1351; receiving groove 131; first guide hole 133;

[0029] Height adjustment mechanism 150; guide block 151; second guide hole 1511;

[0030] Transmission assembly 153; screw rod 1531; annular groove 1551; top groove wall 1557; bottom groove wall 1559; active transmission member 1545; connecting column 1553; driven transmission member 1535; inner ring gear 1543; central gear 1544; planetary gear 1547; intermediate gear 1555; force output shaft 1539; knob 1571; traction rope 1573; flexible rope 1577; pull bead 1579; rotating disk 1575; rotating portion 1581; driving tooth 1583; first driving tooth 1585; second driving tooth 1587; stopper 159; stopper through hole 1591;

[0031] Housing 161; Accommodating space 1611;

[0032] Guide member 170; display device 300; first horizontal axis L1; second horizontal axis L2; vertical axis M; vertical direction Y; horizontal direction X. DETAILED DESCRIPTION

[0033] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0036] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0037] In the description of the present invention, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" 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 present invention. In this specification, the exemplary expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] See also Figure 1 The embodiment of the present application provides a hanging device 100, which can be fixedly mounted on a wall. The hanging device 100 can be used to install a display device 300 so as to hang the display device 300 on a wall.

[0039] The display device 300 may be a television, a multimedia display, or other display devices 300 .

[0040] The rack device 100 includes a fixing frame 110 , at least two racks 130 , and at least one height adjustment mechanism 150 .

[0041] The fixing bracket 110 can be fixedly installed on a wall.

[0042] At least two hangers 130 are used to install the display device 300 . The at least two hangers 130 may refer to two hangers 130 , three hangers 130 , four hangers 130 or other numbers of hangers 130 .

[0043] At least two hanging racks 130 are spaced apart along the horizontal direction X on the fixing rack 110 .

[0044] As an example, there may be two hangers 130, and the display device 300 may be installed on the two hangers 130. The two hangers 130 are respectively connected to the fixing frame 110 in a liftable manner.

[0045] At least one bracket 130 is connected to the fixed frame 110 in a liftable manner through a height adjustment mechanism 150. The height adjustment mechanism 150 drives the bracket 130 to be raised and lowered to change the height difference between the two brackets 130 in the vertical direction, thereby adjusting the horizontal angle of the display device 300 to ensure the user's viewing experience.

[0046] For ease of description, the following explanation will be given by assuming that the fixing bracket 110 is fixedly installed on the wall, and taking one hanging bracket 130 and one height adjustment mechanism 150 in the hanging bracket device 100 as an example.

[0047] See also Figure 2 The height adjustment mechanism 150 includes a guide block 151 and a transmission assembly 153 . The guide block 151 is mounted on the fixing frame 110 and remains stationary relative to the fixing frame 110 .

[0048] As an example, a first hanging slot may be recessed at the bottom end of the guide block 151, and the guide block 151 may be hung on the fixing frame 110 in a movably manner through the first hanging slot. The gravity of the hanging frame 130, the display device 300, the transmission assembly 153, and other structural components presses the guide block 151 against the fixing frame 110, so that the guide block 151 remains stationary relative to the fixing frame 110.

[0049] As another example, the guide block 151 can be fixedly connected to the fixing frame 110 so that the guide block 151 remains stationary relative to the fixing frame 110. The fixing method can be welding, fixing with a locking member, fixing with a clamp, etc. The locking member can be a bolt or a screw. The connection method between the guide block 151 and the fixing frame 110 is not specifically limited here. It only needs to ensure that the guide block 151 always remains stationary relative to the fixing frame 110 during the lifting process of the hanging bracket 130.

[0050] As another example, the guide block 151 and the fixing frame 110 may be integrally formed so that the guide block 151 remains stationary relative to the fixing frame 110 .

[0051] The hanger 130 is levitationally connected to the guide block 151 , so as to be indirectly levitationally connected to the fixing frame 110 , that is, the hanger 130 can be lifted and lowered relative to the guide block 151 and the hanger 130 at the same time.

[0052] The transmission assembly 153 includes a screw rod 1531 , a driving transmission member 1545 and a driven transmission member 1535 .

[0053] The screw rod 1531 is arranged along the vertical direction Y, one end of the screw rod 1531 is threadedly connected to the guide block 151, and the other end of the screw rod 1531 is connected to the driven transmission member 1535, and the driven transmission member 1535 is transmission-connected to the active transmission member 1545. The driven transmission member 1535 is used to convert the rotation of the active transmission member 1545 around the horizontal axis into a rotation around the vertical axis M. The driven transmission member 1535 rotates around the vertical axis M and thereby drives the screw rod 1531 to rotate. The bracket 130 rises and falls in the vertical direction Y relative to the guide block 151 as the screw rod 1531 rotates, so that the single-sided bracket 130 can be driven to rise and fall by rotating the active transmission member 1545, so as to adjust the horizontal angle of the display device 300. Compared with the method of adjusting the horizontal angle of the display device by removing the wall panel in the related art, the bracket device 100 of the embodiment of the present application can convert the rotation around the horizontal axis into the rotation around the vertical axis M through the cooperation of the driven transmission member 1535 and the active transmission member 1545, so as to realize the application of external force in the horizontal direction to drive the active transmission member 1545 to rotate, so as to conveniently adjust the rise and fall of the bracket 130 in the vertical direction, and thus adjust the horizontal angle of the display device 300, which is more convenient for user operation.

[0054] As an example, the driven transmission member 1535 can be fixed or integrally formed on the top end of the screw rod 1531 and coaxially arranged.

[0055] Specifically, when the active transmission member 1545 rotates, it can drive the driven transmission member 1535 to rotate, and the screw rod 1531 can rotate synchronously with the driven transmission member 1535. Because the screw rod 1531 is threadedly connected to the guide block 151, while the guide block 151 and the fixed frame 110 remain stationary, the screw rod 1531 can move up and down relative to the guide block 151 when it rotates. When the screw rod 1531 is raised or lowered, it can drive the bracket 130 to rise and fall synchronously to adjust the horizontal angle of the display device 300.

[0056] In some embodiments, the active transmission member 1545 can be rotated manually by a user or driven to rotate by a driving structure.

[0057] See also Figure 1The number of the hangers 130 and the number of the height adjustment mechanisms 150 can both be two. Each hanger 130 can be connected to the fixed frame 110 in a liftable manner through a height adjustment mechanism 150, so that the two height adjustment mechanisms 150 can be used to control the lifting and lowering of the corresponding hangers 130 respectively to adjust the height difference between the two hangers 130 to adjust the horizontal angle of the display device 300, or the two height adjustment mechanisms 150 can be adjusted at the same time to control the lifting and lowering of the two hangers 130 to change the vertical position of the display device 300 relative to the fixed frame 110.

[0058] As an example, the fixing frame 110 may be substantially in the form of a strip plate, and the two hanging frames 130 may be respectively connected to two ends of the extending direction of the fixing frame 110 in a liftable manner.

[0059] See also Figure 2 In some embodiments, the height adjustment mechanism 150 may further include a force output shaft 1539, which is rotatably connected to the bracket 130 and is arranged along the horizontal axis. The force output shaft 1539 is used to drive the active transmission member 1545 to rotate under the action of an external force, which helps the user to drive the active transmission member 1545 to rotate more conveniently by operating the force output shaft 1539.

[0060] Specifically, the horizontal axis may include a first horizontal axis L1 and a second horizontal axis L2 that are perpendicular to each other, and the horizontal distribution direction of the at least two hangers 130 and the length extension direction of the fixing frame 110 may be substantially parallel to the first horizontal axis L1.

[0061] In this embodiment, the force output shaft 1539 and the active transmission member 1545 can both rotate around the first horizontal axis L1. In some other embodiments, the force output shaft 1539 and the active transmission member 1545 can also rotate around the second horizontal axis L2.

[0062] It should be noted that the user can rotate the power output shaft 1539 manually or by using a tool.

[0063] In some embodiments, the height adjustment mechanism 150 may further include a knob 1571 . The knob 1571 may be connected to the force output shaft 1539 . The user may apply an external force to the knob 1571 to rotate the force output shaft 1539 .

[0064] As an example, the knob 1571 may extend radially along the force output shaft 1539 to facilitate gripping by the user. The knob 1571, the force output shaft 1539, and the active transmission member 1545 may all rotate around the first horizontal axis L1.

[0065] In some embodiments, the knob 1571 may be at least partially located outside the bracket 130 , thereby eliminating the need for the user to insert their hand between the display device 300 and the wall, and allowing the user to operate the knob 1571 more conveniently.

[0066] As an example, the knob 1571 can be at least partially located outside the gap between the display device 300 and the wall, and located on the left or right side of the display device 300. In this way, the user does not need to reach between the display device 300 and the wall to operate the knob 1571, nor does he need to reserve space between the display device 300 and the wall for the knob 1571 to rotate. This helps to improve the ease of operation of the knob 1571 while effectively reducing the gap between the display device 300 and the wall, thereby improving the aesthetics of the display device 300 after installation.

[0067] In some embodiments, the bracket device 100 may also include a planetary gear set, which can be connected to the bracket 130, and the power input end of the planetary gear set can be connected to the force output shaft 1539, and the power output end transmission of the planetary gear set can be connected to the active transmission member 1545. The planetary gear set can be used to transmit the rotational power of the force output shaft 1539 to the active transmission member 1545 to drive the active transmission member 1545 to rotate. In this way, the planetary gear set can increase the torque transmitted from the force output shaft 1539, which helps the user to turn the power output shaft 1539 more effortlessly to drive the driven transmission member 1535 to rotate.

[0068] See also Figure 1 、 Figure 3 and Figure 4 In some embodiments, the height adjustment mechanism 150 may further include a traction rope 1573 and a rotating disk 1575 , and the rotating disk 1575 is rotatably connected to the bracket 130 around a horizontal axis.

[0069] Among them, the traction rope 1573 is used to receive external traction to drive the rotating disk 1575 to rotate, and then drive the active transmission part 1545 to rotate. In this way, the user can drive the rotating disk 1575 to rotate more conveniently and labor-savingly by pulling the traction rope 1573, thereby improving the user experience.

[0070] As an example, the height adjustment mechanism 150 may further include a connecting shaft, which may connect the active transmission member 1545 and the rotating disk 1575 , and the connecting shaft, the active transmission member 1545 and the rotating disk 1575 may all rotate around the second horizontal axis L2 .

[0071] As another example, the active transmission member 1545 and the rotating disk 1575 may also be connected through other transmission structures, as described in the following embodiments.

[0072] As an example, the middle portion between the two ends of the traction rope 1573 can be connected to the rotating disk 1575, so that one end of the traction rope 1573 can be used to control the upward movement of the hanger 130, and the other end of the traction rope 1573 can be used to control the downward movement of the hanger 130. It is understood that the two ends of the traction rope 1573 can also be connected to form a ring structure, which helps prevent one end of the traction rope 1573 from moving and hiding in the space between the display device 300 and the wall, making it easier for the user to intuitively determine the position of the traction rope 1573.

[0073] In some embodiments, the traction rope 1573 may be partially exposed outside the hanger 130 to facilitate the user's grip.

[0074] As an example, the traction rope 1573 can extend downward so that part of the traction rope 1573 is located below and outside the gap between the display device 300 and the wall, so that the user can pull the traction rope 1573 from below the display device 300 to control the lifting and lowering of the hanger 130.

[0075] In some embodiments, the rotating disk 1575 can be connected to the active transmission member 1545 through a planetary gear set, the power input end of the planetary gear set can be connected to the rotating disk 1575, and the power output end of the planetary gear set can be connected to the active transmission member 1545. The planetary gear set can be used to transmit the rotational power of the rotating disk 1575 to the active transmission member 1545 to drive the active transmission member 1545 to rotate. In this way, the planetary gear set can increase the torque transmitted from the rotating disk 1575, which helps the user to pull the traction rope 1573 more effortlessly to drive the driven transmission member 1535 to rotate.

[0076] See also Figures 5 and 6 In some embodiments, the planetary gear set may include an inner ring gear 1543, a central gear 1544 and a plurality of planetary gears 1547, the driving transmission member 1545 may be a driving gear, and the driven transmission member 1535 may be a driven gear meshing with the driving gear.

[0077] Among them, the inner ring gear 1543 can be connected to the bracket 130, and the end face of the driving gear can be protruding with multiple connecting columns 1553. Each planetary gear 1547 is rotatably connected to a connecting column 1553, and multiple planetary gears 1547 are respectively engaged between the inner ring gear 1543 and the center gear 1544. The center gear 1544 can be the power input end of the planetary gear set, and the multiple planetary gears 1547 can be the power output end of the planetary gear set, so that the center gear 1544 can transmit the rotational power to the driven transmission member 1535 through multiple planetary gears, which helps the user to drive the driven transmission member 1535 to rotate more effortlessly.

[0078] As an example, Figure 2 and Figure 5 As shown, the center gear 1544 can be connected to the force output shaft 1539. When the force output shaft 1539 is rotated by an external force, it drives the center gear 1544 to rotate. The rotation of the center gear 1544 drives multiple planetary gears 1547 to rotate around the connecting column 1553. The planetary gears 1547 can realize the revolution around the first horizontal axis L1 through the meshing transmission with the inner ring 1543, and drive the driving gear to rotate around the first horizontal axis L1. When the driving transmission member 1545 rotates, it can drive the driven transmission member 1535 to rotate around the vertical axis M, and then drive the screw 1531 to rotate. In this way, it helps users to rotate the power output shaft 1539 more effortlessly to drive the driven transmission member 1535 to rotate.

[0079] As another example, Figures 5 and 6 As shown, the central gear 1544 can be connected to the rotating disk 1575 via a rotating shaft, and both can rotate around the second horizontal axis L2. The traction rope 1573 drives the rotating disk 1575 to rotate around the second horizontal axis L2 under the action of external traction, and the central gear 1544 rotates synchronously with the rotating disk 1575 around the second horizontal axis L2. The rotation of the central gear 1544 drives the multiple planetary gears 1547 to rotate around the connecting column 1553. The planetary gears 1547 can achieve orbital revolution around the second horizontal axis L2 through meshing transmission with the inner ring gear 1543, and drive the driving gear to rotate around the second horizontal axis L2. When the driving transmission member 1545 rotates, it can drive the driven transmission member 1535 to rotate around the vertical axis M, and then drive the screw 1531 to rotate. This helps the user to pull the traction rope 1573 more effortlessly to drive the driven transmission member 1535 to rotate.

[0080] In the multiple planetary gears 1547, multiple can refer to two or more, and the specific number can be set according to needs.

[0081] In some embodiments, the active transmission member 1545 and the driven transmission member 1535 may have various options.

[0082] As an example, the active transmission member 1545 and the driven transmission member 1535 may be two bevel gears meshing with each other (eg Figure 2 shown).

[0083] As another example, one of the driving transmission member 1545 and the driven transmission member 1535 may be a bevel gear, and the other may be a spur gear (eg, Figure 3 shown).

[0084] It should be noted that the bevel gear in the above example may be a bevel gear, and the active transmission member 1545 and the driven transmission member 1535 may also be two bevel gears meshing with each other.

[0085] It can be understood that in the above two examples, the active transmission member 1545 and the driven transmission member 1535 can be engaged with each other, or one or more intermediate gears 1555 can be set between the active transmission member 1545 and the driven transmission member 1535, and the intermediate gears 1555 can be engaged between the active transmission member 1545 and the driven transmission member 1535, so as to reduce the diameter of the active transmission member 1545.

[0086] As another example, one of the driving transmission member 1545 and the driven transmission member 1535 may be a worm, and the other may be a turbine meshing with the worm.

[0087] See also Figures 3 to 5 In some embodiments, the traction rope 1573 may include a flexible rope 1577 and a plurality of pull beads 1579 , and the plurality of pull beads 1579 may be distributed at intervals on the flexible rope 1577 .

[0088] Among them, the beads 1579 can be fixed on the flexible rope 1577, and the shape of the beads 1579 can be set according to needs. For example, the beads 1579 can be round beads, elliptical beads, semicircular beads, polygonal beads or beads 1579 of other shapes.

[0089] The outer periphery of the rotating disk 1575 can be protruded to form a plurality of driving teeth 1583, and the plurality of driving teeth 1583 can be distributed at intervals along the circumference of the rotating disk 1575. There is a pull bead 1579 provided between at least two adjacent driving teeth 1583. The flexible rope 1577 can be used to receive external traction to drive the pull bead 1579 to push against the driving teeth 1583 to drive the rotating disk 1575 to rotate. The user can pull the flexible rope 1577 so that the pull bead 1579 located between the two driving teeth 1583 can push against one of the driving teeth 1583 to drive the rotating disk 1575 to rotate, thereby realizing the control of the lifting and lowering of the hanger 130.

[0090] In addition, this embodiment uses the pull bead 1579 to push the driving tooth 1583 to drive the rotating disk 1575 to rotate. As the rotating disk 1575 rotates, there is always a pull bead 1579 located between two adjacent driving teeth 1583, thereby increasing the rotation angle of the rotating disk 1575 to increase the lifting stroke of the bracket 130, thereby achieving a larger horizontal angle adjustment on one side of the display device 300, and further improving the user experience.

[0091] Among the multiple driving teeth 1583, multiple can refer to two or more, and the specific number can be set according to needs.

[0092] In some embodiments, the rotating disk 1575 may include a rotating portion 1581 and a plurality of driving teeth 1583 , and the plurality of driving teeth 1583 may include a plurality of first driving teeth 1585 and a plurality of second driving teeth 1587 .

[0093] The traction rope 1573 is used to receive external traction to drive the rotating disk 1575 to rotate, and then drive the active transmission member 1545 to rotate through the rotating portion 1581.

[0094] As an example, the rotating portion 1581 and the active transmission member 1545 may be connected via a connecting shaft, and the rotating portion 1581 , the active transmission member 1545 and the connecting shaft may all rotate around the second horizontal axis L2 .

[0095] As another example, the rotating portion 1581 and the active transmission member 1545 may be connected through other transmission structures.

[0096] The rotating portion 1581 includes a first section, a second section, and a third section sequentially connected along the axial direction, and the flexible rope 1577 can be partially wound around the outer circumference of the second section.

[0097] As an example, the flexible rope 1577 can be wrapped around the outer periphery of the upper part of the second section and hang down from opposite sides of the rotating part 1581 in the radial direction to extend below the gap between the display device 300 and the wall, so that the user can grasp the flexible rope 1577.

[0098] A plurality of first drive teeth 1585 can be protruded from the outer peripheral surface of the first section and distributed at intervals along the circumference of the first section. A plurality of second drive teeth 1587 can be protruded from the outer peripheral surface of the third section and distributed at intervals along the circumference of the third section. The first drive teeth 1585 and the second drive teeth 1587 are paired and arranged one by one along the axial direction of the rotating disk 1575, that is, each first drive tooth 1585 has a corresponding second drive tooth 1587 along the axial direction of the rotating disk 1575. In this way, the first drive teeth 1585 and the second drive teeth 1587 can cooperate to limit the flexible rope 1577 to the outer periphery of the second section, which helps to prevent the flexible rope 1577 from detaching from the rotating disk 1575 and improves the stability of the traction rope 1573 driving the rotating disk 1575 to rotate.

[0099] The pull bead 1579 can be used to push against the first drive tooth 1585 and / or the second drive tooth 1587 to drive the rotating disk 1575 to rotate.

[0100] In some embodiments, at least one portion of the bead 1579 can be located between two adjacent first drive teeth 1585, and the flexible rope 1577 is used to receive external traction to drive the bead 1579 to push against the first drive tooth 1585 to drive the rotating disk 1575 to rotate. Specifically, when the user pulls the flexible rope 1577, the bead 1579 can be used to push against the first drive tooth 1585 to drive the rotating disk 1575 to rotate, thereby controlling the lifting and lowering of the hanger 130.

[0101] At least one pull bead 1579 may be partially located between two adjacent first drive teeth 1585 .

[0102] It should be noted that when the flexible rope 1577 is pulled by external force to drive the rotating disk 1575 to rotate, the multiple first drive teeth 1585 also rotate synchronously. At this time, there will always be at least one pull bead 1579 located between two adjacent first drive teeth 1585 to ensure that there is always a pull bead 1579 to push against the first drive tooth 1585.

[0103] In some embodiments, at least one bead 1579 can be partially located between two adjacent second drive teeth 1587, and the flexible rope 1577 is used to receive external traction to drive the bead 1579 to push against the second drive tooth 1587 to drive the rotating disk 1575 to rotate, so that when the user pulls the flexible rope 1577, the bead 1579 can be pushed against the second drive tooth 1587 to drive the rotating disk 1575 to rotate, thereby controlling the lifting and lowering of the hanger 130.

[0104] Among them, at least one pull bead 1579 can be partially located between two adjacent second drive teeth 1587, specifically, it can refer to the multiple second drive teeth 1587 located above the third section along the vertical direction Y, and there is one or more pull beads 1579 between at least two adjacent second drive teeth 1587.

[0105] It should be noted that when the flexible rope 1577 is pulled by external force to drive the rotating disk 1575 to rotate, the multiple second drive teeth 1587 also rotate synchronously. At this time, there will always be at least one pull bead 1579 located between the two adjacent second drive teeth 1587 above the third section along the vertical direction Y to ensure that there is always a pull bead 1579 to push against the second drive tooth 1587.

[0106] It can be understood that the bead 1579 can also be located between two adjacent first drive teeth 1585, and can be located between two adjacent second drive teeth 1587 on the same side at the same time, so that when the flexible rope 1577 is subjected to force, the bead 1579 can push against the first drive tooth 1585 and the second drive tooth 1587 at the same time, which helps to drive the rotating disk 1575 to rotate more stably.

[0107] See also Figure 1 、 Figure 5 and Figure 6 In some embodiments, the screw rod 1531 can be rotatably mounted on the bracket 130 around the vertical axis M through a locking structure. At the same time, the locking structure is also used to limit the relative movement of the screw rod 1531 and the bracket 130 in the vertical direction Y. In this way, when the screw rod 1531 rotates around the vertical axis M, the screw rod 1531 will be displaced in the vertical direction Y relative to the guide block 151, and under the restriction of the locking structure, the bracket 130 will be displaced in the vertical direction Y relative to the guide block 151 as the screw rod 1531 rotates, thereby realizing the lifting and lowering of the bracket 130.

[0108] The positioning structure can be arranged in a variety of ways.

[0109] As an example, the locking structure may include a first locking member and a second locking member, both of which may be sleeved on the screw rod 1531 and fixed relative to the screw rod 1531. The bracket 130 may be provided with an extension portion 135 for connecting to the screw rod 1531. The extension portion 135 may have a mounting through hole 1351, through which the screw rod 1531 may be inserted, and the driven transmission member 1535 may be located above the extension portion 135. The extension portion 135 is clamped between the first locking member and the second locking member, wherein the first locking member can abut the bottom of the extension portion 135, and the second locking member abuts the top of the extension portion 135. In this way, when the screw rod 1531 rises, the first locking member can push the extension portion 135 upward to drive the extension portion 135 to rise, and then drive the hanger 130 to rise relative to the guide block 151 and the fixed frame 110; and when the screw rod 1531 descends, the second locking member can press the extension portion 135 downward to drive the extension portion 135 to descend, and then drive the hanger 130 to descend relative to the guide block 151 and the fixed frame 110.

[0110] As another example, the difference from the above example is that the locking structure in this example can only include the first locking member, without the need for a second locking member. In this case, the extension 135 is clamped between the first locking member and the driven transmission member 1535, wherein the first locking member can abut against the bottom of the extension 135, and the bottom of the driven transmission member 1535 can abut against the top of the extension 135. In this way, when the screw rod 1531 rises, the first locking member can push up against the extension 135 to drive the extension 135 to rise, thereby driving the hanger 130 to rise relative to the guide block 151 and the fixed frame 110; when the screw rod 1531 descends, the bottom of the driven transmission member 1535 can press down against the extension 135 to drive the extension 135 to descend, thereby driving the hanger 130 to descend relative to the guide block 151 and the fixed frame 110.

[0111] As another example, a retaining groove may be provided around the outer circumference of the driven transmission member 1535. The driven transmission member 1535 may be inserted into the mounting hole 1351 of the extension portion 135, and the screw rod 1531 may be located below the extension portion 135. The extension portion 135 may partially extend into the retaining groove. Specifically, the inner wall of the mounting hole 1351 may be located within the retaining groove. The lower inner wall of the retaining groove may abut against the bottom of the extension portion 135, and the upper inner wall of the retaining groove may abut against the top of the extension portion 135. In this way, when the screw rod 1531 rises, it can drive the extension portion 135 upward via the lower inner wall of the retaining groove, thereby driving the hanger 130 upward relative to the guide block 151 and the fixed frame 110. When the screw rod 1531 descends, it can drive the extension portion 135 downward via the upper inner wall of the retaining groove, thereby driving the hanger 130 downward relative to the guide block 151 and the fixed frame 110.

[0112] It should be noted that, in the above example, the edge of the extension portion 135 may be provided with a first opening connected to the mounting through hole 1351, and the locking groove of the screw rod 1531 or the driven transmission member 1535 can be conveniently installed in the mounting through hole 1351 from the first opening.

[0113] In addition to the above examples, the locking structure may also adopt other structures. Specifically, in some embodiments, the locking structure may include a limiting member 159 and an annular groove 1551 recessed and formed on the outer periphery of the screw rod 1531.

[0114] The limiting member 159 may be fixedly connected to the hanger 130 . Specifically, the limiting member 159 is fixedly connected to the extension portion 135 .

[0115] The limit member 159 can partially extend into the annular groove 1551, and the screw rod 1531 can rotate around the vertical axis M relative to the limit member 159, so that when the screw rod 1531 rotates relative to the guide block 151 and displaces in the vertical direction Y, the bracket 130 can be driven to displace synchronously in the vertical direction Y through the limit member 159.

[0116] Specifically, the limiting member 159 may be provided with a limiting through-hole 1591, the screw rod 1531 rotatably passing through the limiting through-hole 1591, the limiting member 159 partially extending into the annular groove 1551, and the limiting member 159 may be located between the driven transmission member 1535 and the hanger 130. It is understood that when the limiting member 159 partially extends into the annular groove 1551, the axial position of the limiting member 159 relative to the screw rod 1531 remains unchanged, and because the limiting member 159 is fixedly connected to the extension portion 135, when the screw rod 1531 rotates and displaces in the vertical direction Y relative to the guide block 151, the hanger 130 also displaces in the vertical direction Y along with the screw rod 1531.

[0117] As an example, the limiting member 159 can be fixedly connected to the top of the extension portion 135 and located between the extension portion 135 and the driven transmission member 1535. The limiting through hole 1591 and the mounting through hole 1351 can be coaxially arranged, and the screw rod 1531 can be inserted into the mounting through hole 1351.

[0118] It can be understood that the outer peripheral wall of the limiting member 159 can be provided with a second opening, and the second opening can be connected to the limiting through hole 1591, so that the annular groove 1551 of the screw rod 1531 can be installed in the limiting through hole 1591 through the second opening.

[0119] In some embodiments, the annular groove 1551 may include a bottom groove wall 1559 and a top groove wall 1557 .

[0120] The bottom groove wall 1559 can be used to drive the limit member 159 upward when the screw rod 1531 rises, thereby driving the hanger 130 to rise relative to the guide block 151 and the fixing frame 110, thereby adjusting the unilateral rise of the display device 300 to adjust the horizontal angle of the display device 300. Specifically, when the screw rod 1531 rises, the bottom groove wall 1559 can push against the limit member 159 to drive the screw rod 1531 upward.

[0121] The top groove wall 1557 of the annular groove 1551 is used to drive the stopper 159 downward when the screw rod 1531 descends, thereby driving the hanger 130 downward relative to the guide block 151 and the fixing frame 110. This allows the display device 300 to be lowered on one side to adjust the horizontal angle of the display device 300. Specifically, when the screw rod 1531 descends, the top groove wall 1557 pushes against the stopper 159, driving the screw rod 1531 downward.

[0122] In some embodiments, the limiting member 159 is strip-shaped, and there are at least two limiting members 159, which are spaced apart about the axis of the mounting through hole 1351. One end of each limiting member 159 is fixedly connected to the extension portion 135, and the other end extends into the annular groove 1551. The axial position of the limiting member 159 relative to the screw rod 1531 remains unchanged. Moreover, because the limiting member 159 is fixedly connected to the extension portion 135, when the screw rod 1531 rotates and displaces in the vertical direction Y relative to the guide block 151, the hanger 130 also displaces in the vertical direction Y along with the screw rod 1531.

[0123] See also Figure 2 In some embodiments, the bracket 130 is provided with a receiving groove 131, and the guide block 151, the screw rod 1531, the active transmission member 1545 and the driven transmission member 1535 are all located in the receiving groove 131, so that the internal space of the bracket 130 can be fully utilized, which helps to make the overall structure of the bracket device 100 more compact.

[0124] As an example, the bracket 130 may include a first vertical arm, a second vertical arm, a third vertical arm, and a transverse arm. The second vertical arm is connected between the first and third vertical arms. The first and third vertical arms are opposed to each other and spaced apart along the horizontal direction X. The first, second, and third vertical arms enclose a receiving groove 131.

[0125] The transverse support arm is located in the receiving groove 131 and connected between the first vertical support arm and the second vertical support arm, and the transverse support arm can be located above the fixing frame 110. The guide block 151 can be located between the transverse support arm and the fixing frame 110.

[0126] It can be understood that the transverse arm can be formed as the extension portion 135 in the above embodiment.

[0127] See also Figures 5 and 6 In some embodiments, the height adjustment mechanism 150 may further include a housing 161 , and the housing 161 may be fixedly connected to the rack 130 , so that the housing 161 and the rack 130 may be raised and lowered synchronously.

[0128] A accommodating space 1611 is provided in the shell 161, and the screw rod 1531, the active transmission member 1545 and the driven transmission member 1535 are all located in the accommodating space 1611, and the guide block 151 is at least partially located in the accommodating space 1611. In this way, the screw rod 1531, the active transmission member 1545, the driven transmission member 1535 and the guide block 151 can all be installed in the shell 161 first, so that the height adjustment mechanism 150 can be assembled separately, and then the height adjustment mechanism 150 can be installed between the bracket 130 and the fixed frame 110, thereby reducing the assembly difficulty of the bracket device 100.

[0129] The shell 161 is movably connected to the guide block 151 along the vertical direction Y, and the screw rod 1531 and the active transmission member 1545 are both rotatably connected to the shell 161. The shell 161 rises and falls relative to the guide block 151 in the vertical direction Y as the screw rod 1531 rotates, and the bracket 130 and the shell 161 rise and fall synchronously. The specific lifting process can refer to the above embodiment and will not be repeated here.

[0130] As an example, the bottom end of the shell 161 may be provided with a third opening communicating with the accommodating space 1611 , and the top end of the guide block 151 may be partially inserted into the accommodating space 1611 through the third opening.

[0131] It can be understood that the guide block 151 , the screw rod 1531 , the active transmission member 1545 , the inner gear ring 1543 and other structures in the above embodiment can be indirectly connected to the bracket 130 by being connected to the housing 161 .

[0132] See also Figures 2 to 3In some embodiments, the rack device 100 may further include a guide member 170, and the rack 130 may be provided with a first guide hole 133 extending along the vertical direction Y. The guide member 170 is fixedly connected to the guide block 151 and is movably provided in the first guide hole 133 along the vertical direction Y, so that the guide member 170 can provide guidance for the lifting and lowering of the rack 130, which helps the rack 130 to have a more accurate moving trajectory.

[0133] The guide member 170 and the guide block 151 may be connected by welding, threading or integrally formed, so that the guide member 170 can be fixed to the guide block 151 .

[0134] There are many options for the guide member 170. For example, the guide member 170 can be a screw, a polished rod, or other shaft rod structures.

[0135] As an example, the guide block 151 can be set in the receiving groove 131 of the hanger 130, and the first guide hole 133 can be set in the first vertical support arm or the second vertical support arm. The guide member 170 can be a screw, and one end of the screw can be threadedly connected to the guide block 151 to fix the screw to the guide block 151. The other end of the screw can be inserted into the first guide hole 133. When the hanger 130 is raised or lowered, the hole wall of the first guide hole 133 can be slidably connected to the screw, so that the screw can provide guidance for the raising and lowering of the hanger 130. It can be understood that the first vertical support arm and the second vertical support arm can also be respectively provided with a first guide hole 133, and the number of guide members 170 can be two, and each first guide member 170 is inserted into a corresponding first guide hole 133.

[0136] It can be understood that there can be multiple guide members 170, and multiple first guide holes 133 can be provided on the bracket 130 or the shell 161. Each first guide hole 133 is penetrated by at least one guide member 170, which helps to better provide guidance for the lifting and lowering of the bracket 130.

[0137] In some embodiments, the guide block 151 can be provided with a second guide hole 1511 extending along the vertical direction Y. The guide member 170 is fixedly connected to the bracket 130 and is movably arranged in the second guide hole 1511 along the vertical direction Y. Thus, the guide member 170 can also provide guidance for the lifting and lowering of the bracket 130, which helps the bracket 130 to have a more accurate moving trajectory. The specific guiding method and structure of the guide member 170 can refer to the guide member 170 in the above embodiment and will not be repeated here.

[0138] In the rack device 100 provided in the embodiment of the present application, at least one rack 130 is connected to the fixed frame 110 via a height adjustment mechanism 150 so that the height adjustment mechanism 150 can raise and lower the rack 130 to adjust the horizontal angle of the display device 300 to meet the different viewing needs of the user. By threading one end of a screw rod 1531 arranged along the vertical direction Y to the guide block 151 and the other end to the driven transmission member 1535 connected to the active transmission member 1545, the driven transmission member 1535 can convert the rotation of the active transmission member 1545 around the horizontal axis into rotation around the vertical axis M, thereby driving the screw rod 1531 to rotate. The rack 130 can then be raised and lowered relative to the guide block 151 in the vertical direction Y with the rotation of the screw rod 1531, thereby driving the rack 130 to be raised and lowered by rotating the active transmission member 1545. In this way, the horizontal angle of the display device 300 can be adjusted. Compared with the method of adjusting the horizontal angle of the display device by removing the wall panel in the related art, the bracket device 100 of the embodiment of the present application can convert the rotation around the horizontal axis into the rotation around the vertical axis M through the cooperation of the driven transmission member 1535 and the active transmission member 1545, and realize applying an external force in the horizontal direction to drive the active transmission member 1545 to rotate, so as to conveniently adjust the lifting and lowering of the bracket 130 in the vertical direction, and then the horizontal angle of the display device 300 can be adjusted, which is more convenient for users to operate.

[0139] While the embodiments of the present invention have been described in detail above with reference to the accompanying drawings, the present invention is not limited to the embodiments described above. Various modifications may be made within the scope of knowledge possessed by a person skilled in the art without departing from the spirit of the present invention. Furthermore, the embodiments of the present invention and the features thereof may be combined with one another unless there is a conflict.

Claims

1. A rack device, characterized in that: It comprises a fixed frame, at least two hanging frames and at least one height adjustment mechanism, wherein the at least two hanging frames are spaced apart on the fixed frame in a horizontal direction; the at least two hanging frames are used to mount a display device; At least one of the hanging brackets is liftably connected to the fixing bracket via the height adjustment mechanism; The height adjustment mechanism comprises: a guide block, the guide block being mounted on the fixing frame and remaining stationary relative to the fixing frame; and The transmission assembly includes a screw rod, an active transmission member and a driven transmission member. The screw rod is arranged in a vertical direction, one end of the screw rod is threadedly connected to the guide block, and the other end of the screw rod is connected to the driven transmission member. The driven transmission member is connected to the active transmission member in a transmission manner. The driven transmission member is used to convert the rotation of the active transmission member around the horizontal axis into rotation around the vertical axis, thereby driving the screw rod to rotate. The hanger rises and falls in the vertical direction relative to the guide block as the screw rod rotates.

2. The rack device according to claim 1, characterized in that: The height adjustment mechanism further includes a force output shaft and a knob, wherein the force output shaft is rotatably connected to the bracket and is arranged along the horizontal axis; The knob is connected to the force output shaft and is used to drive the force output shaft to rotate under the action of an external force.

3. The rack device according to claim 2, characterized in that: The height adjustment mechanism further includes a planetary gear set, wherein the planetary gear set is connected to the bracket; The power input end of the planetary gear set is connected to the power output shaft, and the power output end of the planetary gear set is transmission-connected to the active transmission member; The planetary gear set is used to transmit the rotational power of the power output shaft to the active transmission member to drive the active transmission member to rotate.

4. The rack device according to claim 1, characterized in that: The height adjustment mechanism further includes a traction rope and a rotating disk, wherein the rotating disk is rotatably connected to the hanging bracket around the horizontal axis; The traction rope is used to receive external traction to drive the rotating disk to rotate, and further drive the active transmission member to rotate.

5. The rack device according to claim 4, characterized in that: The height adjustment mechanism further includes a planetary gear set, wherein the planetary gear set is connected to the bracket; The rotating disk is connected to the active transmission member through the planetary gear set, the power input end of the planetary gear set is connected to the rotating disk, and the power output end of the planetary gear set is connected to the active transmission member; The planetary gear set is used to transmit the rotational power of the rotating disk to the active transmission member to drive the active transmission member to rotate.

6. The rack device according to claim 3 or 5, characterized in that: The planetary gear assembly includes an inner ring gear, a central gear and a plurality of planetary gears, the active transmission member is a driving gear, and the driven transmission member is a driven gear meshing with the driving gear; The inner gear ring is connected to the hanger; The central gear is the power input end of the planetary gear set, and the plurality of planetary gears are the power output end of the planetary gear set; A plurality of connecting columns are protruding from the end surface of the driving gear, each of the planetary gears is rotatably connected to one of the connecting columns, and the plurality of planetary gears are respectively engaged between the inner gear ring and the central gear.

7. The rack device according to claim 4, characterized in that: The traction rope includes a flexible rope and a plurality of pull beads, wherein the plurality of pull beads are distributed on the flexible rope at intervals; A plurality of driving teeth are formed on the outer periphery of the rotating disk, and the plurality of driving teeth are distributed at intervals along the circumference of the rotating disk; There is a pull bead disposed between at least two adjacent driving teeth, and the flexible rope is used to receive external traction to drive the pull bead to push against the driving teeth to drive the rotating disk to rotate.

8. The rack device according to claim 1, characterized in that: The screw rod is rotatably mounted on the hanger around the vertical axis via a locking structure, and the locking structure is used to limit the relative movement of the screw rod and the hanger along the vertical direction.

9. The rack device according to claim 8, characterized in that: The locking structure includes a limiting member and an annular groove formed on the outer periphery of the screw rod. The limiting member is fixedly connected to the hanger, and the limiting member partially extends into the annular groove. The screw rod can rotate around the vertical axis relative to the limiting member.

10. The rack device according to claim 1, characterized in that: The number of the hanging racks and the number of the height adjustment mechanisms are both two, and each hanging rack is connected to the fixing rack in a liftable manner via one height adjustment mechanism.

11. The rack device according to claim 1, characterized in that: The active transmission member and the driven transmission member are two bevel gears; Alternatively, one of the driving transmission member and the driven transmission member is a bevel gear, and the other is a spur gear; Alternatively, one of the active transmission member and the driven transmission member is a worm, and the other is a turbine.