Lifting mechanism and display screen hanger

Abstract

The invention provides a lifting mechanism and a display screen hanging frame. The lifting mechanism comprises a first connecting piece, a second connecting piece, a screw rod, a gear and a rack, a lifting freedom degree exists between the second connecting piece and the first connecting piece, and the screw rod is rotatably connected to the first connecting piece; the gear comprises a first tooth part and a second tooth part, the first tooth part is meshed with the screw rod, and the second tooth part is meshed with the rack; the rack is connected with the second connecting piece; and the rotation of the screw rod drives the second connecting piece to lift relative to the first connecting piece. Therefore, through transmission among the screw rod, the gear and the rack, lifting height adjustment of the second connecting piece relative to the first connecting piece can be achieved, the structure can be simplified, and the cost can be reduced.

Description

Technical Field

[0001] The invention relates to the field of display installation, and in particular to a lifting mechanism and a display screen hanging rack. Background Art

[0002] Flat-panel televisions, flat-panel displays, etc. are generally mounted on a wall using a wall mount, thereby saving space. However, the lifting mechanism of the existing wall mount has a complex structure and high cost. Summary of the invention

[0003] To this end, the present application proposes a lifting mechanism and a display screen bracket to solve the above technical problems.

[0004] In order to solve the above technical problems, the technical solution of this application is:

[0005] In a first aspect, the present application provides a lifting mechanism, comprising:

[0006] a first connecting member;

[0007] A second connecting member, wherein the second connecting member and the first connecting member have a degree of freedom of lifting and lowering;

[0008] a screw rod rotatably connected to the first connecting member;

[0009] A gear and a rack, wherein the gear comprises a first tooth portion and a second tooth portion, the first tooth portion is meshed with the screw, and the second tooth portion is meshed with the rack; the rack is connected to the second connecting member;

[0010] The rotation of the screw rod drives the second connecting member to rise and fall relative to the first connecting member.

[0011] In a second aspect, the present application provides a display screen bracket, the display screen bracket comprising a lifting mechanism, and the lifting mechanism is the lifting mechanism described in the first aspect.

[0012] Compared with the prior art, the beneficial effects of this application are:

[0013] In the present application, the second connecting member and the first connecting member have the freedom of lifting and lowering, the screw rod is rotatably connected to the first connecting member, the gear includes a first tooth portion and a second tooth portion, the first tooth portion is meshed with the screw rod, and the second tooth portion is meshed with the rack; the rack is connected to the first connecting member; the rotation of the screw rod drives the second connecting member to lift and lower relative to the first connecting member, and the lifting height adjustment is achieved through the transmission of the screw rod, the gear rod and the rack, which can simplify the structure and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The three-dimensional structure diagram of the display screen bracket in one embodiment of the present application is shown as an example;

[0016] Figure 2 The example shows Figure 1 A schematic diagram of the three-dimensional structure of the lifting mechanism in another viewing angle;

[0017] Figure 3 The example shows Figure 2 An exploded schematic diagram of the lifting mechanism in FIG.

[0018] Figure 4 An exploded schematic diagram of the first connecting member at another viewing angle is exemplarily shown;

[0019] Figure 5 for Figure 4 A further decomposition diagram of some components;

[0020] Figure 6 An exploded schematic diagram of a second connecting shell is shown as an example;

[0021] Figure 7 An exploded schematic diagram of a second connecting member and a rack is shown by way of example;

[0022] Figure 8 A schematic structural diagram of a second connecting shell and a pitch adjustment mechanism is shown by way of example;

[0023] Fig. 9 The example shows Figure 8 Schematic diagram of the decomposition of

[0024] Fig.10 The structural schematic diagram of the pitch adjustment mechanism during downward tilt is shown as an example;

[0025] Fig.11 The structural schematic diagram of the pitch adjustment mechanism during the upward pitch is shown as an example;

[0026] Fig.12 A schematic diagram of the structure of the connecting frame, the second connecting member and the hanging rod is shown by way of example;

[0027] Fig.13 The example shows Fig.12 Schematic diagram of the decomposition of

[0028] Fig.14 A schematic structural diagram of a connecting frame, a second connecting member, a hanging rod and a horizontal adjustment structure is shown by way of example;

[0029] Figure 15 to Figure 16 A schematic diagram of the process of adjusting the level is shown by way of example;

[0030] Fig.17 An exploded schematic diagram of a wall panel is shown by way of example;

[0031] Fig.18 A further exploded schematic diagram of a wall panel is shown by way of example;

[0032] Fig.19 A further exploded schematic diagram of a wall panel at another viewing angle is shown as an example. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described in detail below, and 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 to be used to explain the present application, and should not be construed as limiting the present application.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] Please refer to Figure 1 , Figure 1 The three-dimensional structure diagram of the display screen bracket in one embodiment of the present application is shown as an example. Figure 1 The front-to-back direction of the display screen bracket 1000 is the Y-axis direction, the left-to-right direction is the X-axis direction, and the height direction is the Z-axis direction. The directional terms such as "top", "bottom", "left" and "right" mentioned in the display screen bracket 1000 described in the embodiment of the present application are based on the drawings in the specification. Figure 1The description of the orientation shown, with the positive direction of the Z axis as the "top", the negative direction of the Z axis as the "bottom", the negative direction of the X axis as the "left", the positive direction of the X axis as the "right", the negative direction of the Y axis as the "back", and the positive direction of the Y axis as the "front", does not constitute a limitation on the actual application scenario of the display screen bracket 1000.

[0037] like Figure 1 As shown, the display screen hanger 1000 includes a wall panel 200, a connecting arm 300, a lifting mechanism 100, a connecting frame 400 and a hanging rod 500. The wall panel 200 is used to be installed on a carrier, and the carrier can be but not limited to a wall, a cabinet, etc., and the wall can be but not limited to a cement wall, a brick-concrete wall, a wooden column wall, etc. The connecting arm 300 is connected to the wall panel 200 and the first connecting member 110 of the lifting mechanism 100, the connecting frame 400 is connected to the second connecting member 120 of the lifting mechanism 100, and the hanging rod 500 is hung on the connecting frame 400. The hanging rod 500 is used to be connected to a display screen (not shown). When the second connecting member 120 is lifted or lowered relative to the first connecting member 110, the lifting height of the display screen can be adjusted.

[0038] like Figure 2 and Figure 3 As shown, Figure 2 The example shows Figure 1 A schematic diagram of the three-dimensional structure of the lifting mechanism 100 in another viewing angle; Figure 3 The example shows Figure 2 Schematic diagram of the decomposition of the lifting mechanism 100 in FIG. The lifting mechanism 100 includes the aforementioned first connecting member 110, the aforementioned second connecting member 120, a screw 130, a gear 140 and a rack 150. The first connecting member 110 and the second connecting member 120 have a lifting freedom, that is, they can move along the Z-axis direction. The screw 130 is rotatably connected to the first connecting member 110. The gear 140 includes a first tooth portion 1401 and a second tooth portion 1402, the first tooth portion 1401 is meshed with the screw 130, and the second tooth portion 1402 is meshed with the rack 150; the rack 150 is connected to the first connecting member 110. The rotation of the screw 130 drives the second connecting member 120 to rise and fall relative to the first connecting member 110, that is, to move along the Z-axis direction.

[0039] Therefore, when the driving screw 130 rotates, the screw 130 drives the gear 140 to rotate, and the rotation of the gear 140 drives the rack 150 to rise and fall, and the rack 150 drives the second connecting member 120 to rise and fall, which can simplify the structure of the lifting mechanism 100 and reduce costs.

[0040] In some embodiments, the screw rod 130 is cylindrical, and the outer wall is provided with threads. The gear 140 is also cylindrical, and is provided with a first tooth portion 1401 and a second tooth portion 1402 at intervals along the central axis. The rack 150 is in the form of a sheet.

[0041] In some embodiments, there are two racks 150, which are arranged at opposite ends of the gear 140. Therefore, the gear 140 is provided with a second tooth portion 1402, a first tooth portion 1401, and a second tooth portion 1402 at intervals along the direction of the central axis. The first tooth portion 1401 is located between the two second tooth portions 1402, and the two second tooth portions 1402 are each connected to one rack 150. In other embodiments, the rack 150 and the second tooth portion 1402 can each be one, which is not limited here.

[0042] In some embodiments, the central axis of the screw 130 extends along the Y-axis direction, the central axis of the gear 140 extends along the X-axis direction, and the rack 150 extends along the Z-axis direction. Therefore, the central axis of the screw 130, the central axis of the gear 140, and the extension direction of the rack 150 are perpendicular to each other. Therefore, the lifting freedom between the first connecting member 110 and the second connecting member 120 refers to the freedom of movement along the Z-axis direction.

[0043] Thus, the screw rod 130 is substantially perpendicular to the surface of the first connecting member 110 , and the screw rod 130 can be operated on the side of the first connecting member 110 away from the second connecting member 120 , so that the length of the screw rod 130 can be shortened.

[0044] It is understandable that in some other embodiments, the central axis of the screw 130, the central axis of the gear 140 and the extension direction of the rack 150 may intersect each other, but may not be perpendicular to each other, which is not limited here.

[0045] In some embodiments, such as Figure 3 As shown, the lifting mechanism 100 further includes an operating member 160, which may be, but is not limited to, a wrench. A through hole 1101a is provided on the first connecting member 110. The operating member 160 is provided on a side of the first connecting member 110 away from the second connecting member 120. The screw rod 130 is provided on a side of the first connecting member 110 close to the second connecting member 120. The operating member 160 and the screw rod 130 are connected by a connecting member (which may be, but is not limited to, a screw) passing through the through hole 1101a. When the operating member 160 is rotated clockwise, the screw rod 130 drives the gear 140 to rotate clockwise, thereby driving the rack 150 to move upward. Conversely, when the operating member 160 is rotated counterclockwise, the screw rod 130 drives the gear 140 to rotate counterclockwise, thereby driving the rack 150 to move downward.

[0046] Thus, the screw rod 130 can be rotated by the operating member 160, and then the gear 140 and the rack 150 are rotated successively, thereby driving the second connecting member 120 to rise and fall. Moreover, since the screw rod 130 is located on one side of the first connecting member 110 in the Y-axis direction, the operating member 160 is arranged on the other side of the first connecting member 110 in the Y-axis direction, thus, the length of the screw rod 130 can be shortened, making the structure of the lifting mechanism 100 more compact, and since the screw rod 130 is located on one side of the gear 140 in the Z-axis direction, the thickness of the lifting mechanism 100 in the Y-axis direction can be reduced, and the lifting mechanism 100 can be made thinner, realizing an ultra-thin design.

[0047] It can be understood that in other embodiments, the central axis of the screw 130 can extend along the Z-axis direction and be located on the side of the gear 140 away from the second connecting member 120 in the Y-axis direction. In this way, it can extend out from the top or bottom end of the first connecting member 110 and be connected to the operating member 160. This arrangement can also drive the screw 130, the gear 140 and the rack 150 to move in sequence through the operating member 160, thereby realizing the lifting movement.

[0048] It is understandable that in other embodiments, the operating member 160 can be omitted. When the screw rod 130 needs to be operated, a tool is inserted into the through hole 1101a and connected to the screw rod 130 to prevent rotation so as to operate the screw rod 130. When the screw rod 130 does not need to be operated, the tool is removed.

[0049] In some embodiments, such as Figure 3 As shown, the first connecting member 110 includes a first connecting shell 1101 and a second connecting shell 1102, the first connecting shell 1101 is located on one side of the second connecting member 120, and the second connecting shell 1102 is located on the other side of the second connecting member 120, the first connecting shell 1101 and the second connecting shell 1102 are connected to enclose a receiving space that runs through from top to bottom, and the second connecting member 120 is located in the receiving space. The operating member 160 is provided on the side of the first connecting shell 1101 away from the second connecting member 120, the through hole 1101a is provided on the first connecting shell 1101, the screw rod 130 and the gear 140 are located between the first connecting shell 1101 and the second connecting member 120, and the second connecting shell 1102 is used to connect with the connecting arm 300.

[0050] In some embodiments, such as Figure 3 As shown, the second connecting member 120 includes a first plate body 1201 and first side plates 1202 located on opposite sides of the first plate body 1201. The first plate body 1201 and the two first side plates 1202 enclose a storage space. Figure 4The first connecting shell 1101 includes an operating panel 1105 and a sliding portion 1103 arranged on a side of the operating panel 1105 facing the second connecting member 120. The sliding portion 1103 at least partially extends into the storage space enclosed by the first plate body 1201 and the two first side plates 1202, and can abut against the surface of the first plate body 1201.

[0051] Therefore, when the second connecting member 120 performs a lifting motion relative to the first connecting member 110 , the sliding portion 1103 can play a supporting role.

[0052] For some examples, please refer to Figure 5 The sliding part 1103 includes a protruding part 1103a disposed on the side of the operation panel 1105 facing the second connecting member 120, and a mounting groove 1103b is disposed on the protruding part 1103a. The sliding part 1103 also includes a pulley block 1103c disposed in the mounting groove 1103b.

[0053] Thus, the pulley block 1103c is movable relative to the protruding portion 1103a. Therefore, by adjusting the length of the pulley block 1103c extending out of the mounting groove 1103b, the friction force between the pulley block 1103c and the first plate body 1201 can be adjusted.

[0054] Preferably, the sliding part 1103 is in a rectangular parallelepiped shape, the projection of the sliding part 1103 on the outer surface of the operating panel 1105 is smaller than the area of ​​the outer surface of the operating panel 1105, there are two mounting grooves 1103b, which are also in a slender rectangular parallelepiped shape, and there are two pulley blocks 1103c, which are also in a slender rectangular parallelepiped shape. The two pulley blocks 1103c are respectively installed in the two mounting grooves 1103b. Please refer to Figure 3 The lifting mechanism 100 also includes a locking screw 180. A locking hole 1105a is provided on the operating panel 1105. The locking hole 1105a is connected to the mounting groove 1103b. Therefore, the locking hole 1105a can be inserted into the side of the operating panel 1105 away from the second connecting member 120 and connected to the pulley block 1103c located in the mounting groove 1103b. The locking screw 180 can adjust the friction between the pulley block 1103c and the first plate body 1201. It can be understood that when it is necessary to adjust the lifting height of the second connecting member 120 relative to the first connecting member 110, the friction between the pulley block 1103c and the first plate body 1201 is reduced by rotating the locking screw 180, so that adjusting the friction between the pulley block 1103c and the first plate body 1201 will be more labor-saving. After the lifting height adjustment of the second connecting member 120 relative to the first connecting member 110 is completed, the friction between the pulley block 1103c and the first plate body 1201 is increased by rotating the locking screw 180 in the direction to lock the pulley block 1103c, so that the pulley block 1103c is held against the first plate body 1201 and will not move downward due to the action of gravity.

[0055] For some examples, please refer to Figure 5 , the two mounting grooves 1103b are arranged at intervals in the X-axis direction, and the protruding portion 1103a is provided with a fixing portion 1103e between the two mounting grooves 1103b. The sliding portion 1103 also includes a limiting piece 1103d for fixing the pulley block 1103c in the mounting groove 1103b. The limiting piece 1103d is cross-shaped, and the limiting piece 1103d includes two limiting portions 1103d1 and a mounting portion 1103f located between the two limiting portions 1103d1. The top and bottom ends of the mounting portion 1103f protrude from the two limiting portions 1103d1 respectively, and the two limiting portions 1103d1 respectively block the two pulley blocks 1103c from sliding out of their respective mounting grooves 1103b, and the mounting portion 1103f fixes the limiting piece 1103d on the fixing portion 1103e.

[0056] Thus, the two limiting portions 1103d1 respectively block the two pulley blocks 1103c from sliding out of their respective mounting grooves 1103b, and the mounting portion 1103f fixes the limiting piece 1103d on the fixing portion 1103e, thereby improving the installation reliability of the two pulley blocks 1103c.

[0057] In some embodiments, a pulley 1104 is provided on one side of the pulley block 1103c facing the second connecting member 120. Thus, the friction between the pulley block 1103c and the first plate 1201 when sliding can be reduced.

[0058] It is understandable that although Figure 3 In the embodiment, the screw rod 130 and the gear 140 are located on the first connecting member 110 . In fact, the screw rod 130 and the gear 140 are connected to the side of the operation panel 1105 of the first connecting shell 1101 facing the second connecting member 120 .

[0059] like Figure 4 and Figure 5 As shown, the lifting mechanism 100 further includes a mounting member 170, and the mounting member 170 connects the screw rod 130 and the gear 140 to the first connecting shell 1101 on the first connecting member 110. Specifically, as Figure 5As shown, the mounting member 170 includes a first mounting portion 1701 and a second mounting portion 1702, wherein the first mounting portion 1701 is L-shaped, and is used to mount and fix the screw rod 130 on the side of the operation panel 1105 of the first connection shell 1101 facing the second connection member 120, and the second mounting portion 1702 is arc-shaped, and is used to mount and fix the gear 140 on the side of the operation panel 1105 of the first connection shell 1101 facing the second connection member 120. Since the length of the screw rod 130 in the Y-axis direction is greater than the length of the gear 140 in the Y-axis direction, the first mounting portion 1701 is farther away from the outer surface of the first connection shell 1101 in the Y-axis direction, and the second mounting portion 1702 is closer to the outer surface of the first connection shell 1101 in the Y-axis direction, so the mounting member 170 is stepped.

[0060] Therefore, by providing the step-shaped mounting member 170 , the screw rod 130 and the gear 140 can be connected to the first connecting shell 1101 on the first connecting member 110 , and the structure is more compact.

[0061] In some embodiments, please refer again to Figure 5 The screw rod 130 is located below the sliding portion 1103 , and the gear 140 is located below the screw rod 130 .

[0062] Thus, the mounting member 170 is in a stepped shape, extending from the surface of the sliding portion 1103 through the screw 130 to the surface of the gear 140, and the structure is more compact and flat.

[0063] For some examples, please refer to Figure 6 The second connecting shell 1102 includes a second plate body 1102a and a second side plate 1102b, and the first connecting member 110 also includes a buffer member 1107, a portion of the buffer member 1107 is clamped on the second side plate 1102b, and the other portion abuts against the second plate body 1102a.

[0064] Preferably, in some embodiments, the buffer member 1107 is L-shaped and is disposed at a corner formed by the second plate body 1102a and the second side plate 1102b.

[0065] Preferably, in some embodiments, there are two buffer members 1107 , and the two buffer members 1107 are respectively disposed at two corners formed by the second plate body 1102 a and the second side plate 1102 b .

[0066] Preferably, in some embodiments, a groove 1102c is provided at the top of the second side plate 1102b near the corner, and a hook 1108 is provided at the corresponding position of the top of the buffer member 1107, and the hook 1108 is hung in the groove 1102c, and the outer surface of the hook 1108 is flush with other positions of the second side plate 1102b.

[0067] Thus, the buffer member 1107 can reduce the vertical friction buffer between the second connecting shell 1102 and the second connecting member 120, thereby improving the structural durability.

[0068] For some examples, please refer to Figure 7 , the rack 150 is fixed to the first side plate 1202. Thus, the rack 150 is fixed to the first side plate 1202, which can increase the structural strength. In other embodiments, the teeth of the rack 150 can be directly formed on the first side plate 1202, that is, the first side plate 1202 and the rack 150 are combined into one, which can simplify the structure and reduce the cost.

[0069] For some examples, please refer to Figure 7 The top and bottom of the second connecting member 120 are respectively provided with through holes 1203, and the through holes 1203 penetrate through the two first side plates 1202. The through holes 1203 are used to connect with the connecting frame 400.

[0070] For some examples, please refer to Figure 8 and Fig. 9 The display screen bracket 1000 further includes at least one pitch adjustment mechanism 600 , and the pitch adjustment mechanism 600 is disposed between the second connection shell 1102 of the first connection member 110 and the connection arm 300 .

[0071] In some embodiments, each pitch adjustment mechanism 600 includes two plug-in components 601, a connecting plate 602, and two locking components 603. The two plug-in components 601 are arranged on the second side plate 1102b of the second connecting shell 1102 of the first connecting member 110. Adjustment slots 6021 are respectively arranged at both ends of the connecting plate 602. The two plug-in components 601 are respectively inserted into the two adjustment slots 6021. Each locking component 603 locks the corresponding plug-in component 601 at a certain position of the corresponding adjustment slot 6021. The connecting portion 6022 on one side of the connecting plate 602 away from the side plate is connected to the connecting arm 300. In this way, the width occupied by each pitch adjustment mechanism 600 is substantially equal to the width of the second side plate 1102b of the second connecting shell 1102 of the first connecting member 110. The thickness of the display screen hanger 1000 will not be increased in the front-to-back direction due to the provision of the pitch adjustment mechanism 600, and an ultra-thin design can be achieved.

[0072] In some embodiments, the connector 601 is a screw and the locking member 603 is a nut. The adjusting groove 6021 is an arc with the center of the connecting plate 602 as the center. The connecting portion 6022 is a U-shaped connecting lug provided on the plate body of the connecting plate 602. It is understandable that in other embodiments, based on actual needs, the connector 601, the locking member 603, the adjusting groove 6021 and the connecting portion 6022 can be deformed, which is not limited here.

[0073] Please refer to Fig.10 , Fig.10 The structural schematic diagram of the pitch adjustment mechanism during downward tilt is shown as an example; at this time, the upper connector 601 is located at the front side of the upper adjustment slot 6021, and the lower connector 601 is located at the rear side of the lower adjustment slot 6021. At this time, when the connecting arm 300 remains horizontal, the adjustment angle of the pitch adjustment mechanism 600 is 10 degrees downward.

[0074] Please refer to Fig.11 , Fig.11 The structural diagram of the pitch adjustment mechanism when tilting up is shown as an example; at this time, the upper connector 601 is located at the rear side of the upper adjustment slot 6021, and the lower connector 601 is located at the front side of the lower adjustment slot 6021. At this time, the adjustment angle of the pitch adjustment mechanism 600 is 10 degrees upward.

[0075] Thus, the pitch adjustment mechanism 600 enables the display screen bracket 1000 to have an adjustment range between an upward pitch angle of 10 degrees and a downward tilt angle of 10 degrees.

[0076] Please refer to Figure 12 to Figure 14 The connecting frame 400 is a frame structure, including an upper transverse tube 401 and a lower transverse tube 402. The through hole 1203 of the second connecting member 120 is provided on the upper transverse tube 401 and the lower transverse tube 402 of the connecting frame 400. The hanging rod 500 is hung on the upper transverse tube 401 of the connecting frame 400, and is locked on the lower transverse tube 402 of the connecting frame 400. The hanging rod 500 includes a hook 501 provided at the top and a locking structure 503 provided at the bottom. Through the locking structure 503, quick locking can be achieved.

[0077] Among them, a locking hole 502 is provided at the bottom end of the hanging rod 500, and a locking structure 503 is hinged to the bottom end of the hanging rod 500. A clamping portion 5031 and a strip hole 5032 are provided on the locking structure 503. The strip hole 5032 is closer to the bottom end of the hanging rod 500 than the clamping portion 5031. The strip hole 5032 extends along the Z-axis direction. The clamping portion 5031 is clamped on the lower cross tube 402. A locking piece passes through the strip hole 5032 and is connected to the locking hole 502 to form a quick locking to simplify installation.

[0078] Please refer to Figures 14 to 16The display screen bracket 1000 also includes a horizontal adjustment structure 700, which is disposed between the hook 501 of the hanging rod 500 and the upper horizontal tube 401 of the connecting frame 400. Each hook 501 has a flat plate structure, and the horizontal adjustment structure 700 includes two adjustment screws, which are respectively disposed between the hooks 501 of the two hanging rods 500 and the upper horizontal tube 401 of the connecting frame 400. Specifically, the adjustment screws are passed through the flat plate structure of the hook 501 and abut against the upper horizontal tube 401 of the connecting frame 400. When the wall panel 200 is installed on the wall and the levelness is not enough, the levelness between the two hanging rods 500 can be adjusted by adjusting the length of the two screws screwed into the flat plate structure of the hook 501, thereby adjusting the installation levelness of the display screen. For example, Fig.16 As shown, when the connection frame 400 is higher on the left and lower on the right, the adjustment screw on the right side can be adjusted until the hanging rods 500 on the left and right sides are completely horizontal.

[0079] Please refer to Figures 17 to 19 The wall panel 200 includes a wall panel frame 201 and a horizontal sliding frame 202. The wall panel frame 201 is provided with two U-shaped slide rails 2011 arranged in the up-down direction and extending in the horizontal direction. A slide groove 2012 is provided on the front surface of each U-shaped slide rail 2011. A partition 2013 is provided in the middle position of each slide groove 2012 to divide the slide groove 2012 into left and right parts. The horizontal sliding frame 202 is provided with two first U-shaped sliding members 2021 arranged in the up-down direction and extending in the horizontal direction and a connecting plate 2022 located between the two first U-shaped sliding members 2021. The connecting plate 2022 is used to connect with the connecting arm 300. The two first U-shaped sliding members 2021 are respectively clamped on the two U-shaped slide rails 2011. The wall panel 200 also includes four groups of connecting members 203. Every two groups of connecting members 203 are respectively connected to the left and right ends of the same first U-shaped sliding member 2021 and are respectively penetrated between the left and right parts of the same slide groove 2012.

[0080] Therefore, a spacer 2013 is provided in the middle of each slide groove 2012 to divide the slide groove 2012 into two parts, one group of connecting parts 203 slides in the left half, and the other group of connecting parts 203 slides in the right half. This can prevent the horizontal sliding frame 202 from sliding to one side of the wall panel frame 201, causing the center of gravity to be unstable and tilted. Moreover, the first U-shaped sliding member 2021 is arranged on the U-shaped slide rail 2011, and the cooperation of the two can improve the stability adjustment of the horizontal sliding.

[0081] In some embodiments, the wall panel 200 also includes a second U-shaped sliding member 204, and the wall panel frame 201 is provided with a U-shaped slide groove 2014 at a position corresponding to the U-shaped slide rail 2011 on the side away from the horizontal sliding frame 202, and the second U-shaped sliding member 204 is arranged in the U-shaped slide groove 2014, and each group of connecting members 203 is also connected to the second U-shaped sliding member 204 after passing through the slide groove 2012.

[0082] Therefore, when the horizontal sliding frame 202 moves along the U-shaped slide rail 2011, the second U-shaped sliding member 204 also slides synchronously in the U-shaped slide groove 2014, which can greatly improve the load-bearing capacity of the display screen bracket 1000 and can be suitable for hanging large-screen display screens.

[0083] In some embodiments, each set of connectors 203 includes rivets and screws.

[0084] Thus, the rivet can be connected to the second U-shaped sliding member 204, cross the sliding groove 2012, and then connected to the first U-shaped sliding member 2021 of the horizontal sliding frame 202. Then, after adjusting the positions of the horizontal sliding frame 202 and the second U-shaped sliding member 204 relative to the wall panel frame 201, the screws are used to lock them, so as to prevent the horizontal sliding frame 202 from accidentally falling off the wall panel frame 201 when adjusting the position of the horizontal sliding frame 202.

[0085] In summary, the connecting arm 300 is a two-stage pivot connecting arm, which can adjust the front and rear and left and right positions of the display screen hung by the display screen bracket 1000, the pitch adjustment mechanism 600 can adjust the pitch angle, and the horizontal adjustment structure 700 can adjust the left and right tilt angles, so that four-dimensional adjustment can be achieved. Moreover, the locking structure 503 can be used to achieve quick locking, which is convenient for installation.

[0086] The above describes the subject technical solution and corresponding details of the present invention. It can be understood that the above description is only some implementation plans of the subject technical solution of the present invention, and some details may be omitted during the specific implementation.

[0087] In addition, in some embodiments of the above invention, multiple embodiments may be implemented in combination, and various combination schemes are not listed one by one due to space limitations. Those skilled in the art can freely combine the above embodiments according to their needs during specific implementation to obtain a better application experience.

[0088] In summary, the present application has the above-mentioned excellent characteristics, which enables it to enhance the performance unprecedented in the prior art and become a product with great practical value.

[0089] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions or improvements made within the ideas and principles of the present application should be included in the protection scope of the present application.

Claims

1. A lifting mechanism, characterized in that: include: a first connecting member; A second connecting member, wherein the second connecting member and the first connecting member have a degree of freedom of lifting and lowering; a screw rod rotatably connected to the first connecting member; A gear and a rack, wherein the gear comprises a first tooth portion and a second tooth portion, the first tooth portion is meshed with the screw, and the second tooth portion is meshed with the rack; the rack is connected to the second connecting member; The rotation of the screw rod drives the second connecting member to rise and fall relative to the first connecting member.

2. The lifting mechanism according to claim 1, characterized in that: The central axis of the screw extends along a first direction, the central axis of the gear extends along a second direction, and the rack extends along a third direction, wherein the first direction, the second direction and the third direction are arranged to intersect each other, and the second connecting member and the first connecting member have the freedom of lifting and lowering to move along the third direction.

3. The lifting mechanism according to claim 1 or 2, characterized in that: The first connecting member includes a first connecting shell and a second connecting shell, the first connecting shell is located on one side of the second connecting member, and the second connecting shell is located on the other side of the second connecting member, the first connecting shell and the second connecting shell are connected to enclose a receiving space that passes through from top to bottom, the second connecting member is arranged in the receiving space, the screw and the gear are connected to the side of the first connecting shell facing the second connecting member, and the rack is fixed to the side of the second connecting member facing the first connecting shell.

4. The lifting mechanism according to any one of claims 1 to 3, characterized in that: The second connecting member includes a first plate body and first side plates located on opposite sides of the first plate body, and the rack is fixed to the first side plates, or the rack is formed on the first side plates.

5. The lifting mechanism according to claim 4, characterized in that: The first connecting shell includes an operating panel and a sliding portion provided on a side of the operating panel facing the second connecting member, wherein the sliding portion at least partially extends into a receiving space enclosed by the first plate body and the two first side plates and can abut against the first plate body.

6. The lifting mechanism according to claim 5, characterized in that: The sliding portion includes a protruding portion and a pulley block, wherein the protruding portion is arranged on a side of the operating panel facing the second connecting member, the protruding portion is provided with a mounting groove, and the pulley block is arranged in the mounting groove; the operating panel is provided with a locking hole, and the locking hole is communicated with the mounting groove; the lifting mechanism also includes a locking screw, which is inserted into the locking hole and connected to the pulley block located in the mounting groove, and the locking screw adjusts the friction force between the pulley block and the first plate body.

7. The lifting mechanism according to claim 6, characterized in that: There are two mounting grooves, and the protrusion is provided with a fixing part between the two mounting grooves; there are two pulley blocks, and the two pulley blocks are respectively installed in the two mounting grooves; the sliding part also includes a limiting plate, and the limiting plate includes two limiting parts and a mounting part provided between the two limiting parts, the two limiting parts are respectively provided corresponding to the two pulley blocks, and the mounting part is provided corresponding to the fixing part and is fixed on the fixing part.

8. The lifting mechanism according to claim 5, characterized in that: The screw rod is located below the sliding portion, and the gear is located below the screw rod.

9. The lifting mechanism according to claim 8, characterized in that: The lifting mechanism also includes a mounting member, which includes a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are distributed in a stepped manner, the first mounting portion connects the screw to the side of the operating panel facing the second connecting member, and the second mounting portion connects the gear to the side of the operating panel facing the second connecting member.

10. The lifting mechanism according to claim 5, characterized in that: The lifting mechanism also includes an operating member, the operating panel is provided with a through hole, the operating member is arranged on the side of the operating panel away from the second connecting member, the screw is arranged on the side of the operating panel close to the second connecting member, and the operating member and the screw are connected through a connecting member passing through the through hole.

11. The lifting mechanism according to claim 3, characterized in that: The second connecting shell includes a second plate body and second side plates located on opposite sides of the second plate body. The first connecting member also includes a buffer member, a portion of which is clamped on the second side plate and another portion of which is abutted against the second plate body.

12. A display screen bracket, characterized in that: The display screen bracket comprises a lifting mechanism, and the lifting mechanism is the lifting mechanism according to any one of claims 1 to 11.

13. The display screen bracket according to claim 12, characterized in that: The display screen bracket also includes a wall panel, a connecting arm, a connecting frame and a hanging rod, the connecting arm is connected to the wall panel and the first connecting member of the lifting mechanism, the connecting frame is connected to the second connecting member of the lifting mechanism, the hanging rod is hung on the connecting frame, and the hanging rod is used to be connected to the display screen.

14. The display screen bracket according to claim 13, characterized in that: The display screen bracket further comprises a pitch adjustment mechanism, wherein the pitch adjustment mechanism is connected between the second side plate of the second connecting shell of the first connecting member and the connecting arm.

15. The display screen bracket according to claim 14, characterized in that: The pitch adjustment mechanism includes two connectors, a connecting plate and two locking members. The two connectors are arranged on the second side plate of the second connecting shell of the first connecting member. Adjustment grooves are respectively provided at both ends of the connecting plate. The two connectors are respectively inserted into the two adjustment grooves. Each locking member locks the corresponding connector at a certain position of the corresponding adjustment groove. The connecting part on one side of the connecting plate facing away from the side plate is connected to the connecting arm.

16. The display screen bracket according to claim 13, characterized in that: The connecting frame is a frame structure, including an upper transverse tube and a lower transverse tube, and the through hole of the second connecting member is penetrated on the upper transverse tube and the lower transverse tube of the connecting frame; the hanging rod includes a hook arranged at the top and a locking structure arranged at the bottom, the hook is hung on the upper transverse tube, and a locking hole is provided at the bottom end of the hanging rod, and a clamping part and a strip hole are provided on the locking structure, the clamping part is clamped on the lower transverse tube, and a locking member passes through the strip hole and is connected to the locking hole.

17. The display screen bracket according to claim 13, characterized in that: The display screen hanger also includes a horizontal adjustment structure, which is arranged between the hook of the hanger rod and the upper horizontal tube of the connecting frame.

18. The display screen bracket according to claim 13, characterized in that: The wall panel includes a wall panel frame and a horizontal sliding frame, the wall panel frame is provided with two U-shaped slide rails arranged in the up-down direction and extending in the horizontal direction, a slide groove is provided on the front surface of each of the U-shaped slide rails, and a partition is provided in the middle position of each of the slide grooves to divide the slide groove into left and right parts, the horizontal sliding frame is provided with two first U-shaped sliding members arranged in the up-down direction and extending in the horizontal direction and a connecting plate located between the two first U-shaped sliding members, the connecting plate is used to be connected to the connecting arm, and the two first U-shaped sliding members are respectively clamped on the two U-shaped slide rails, and the wall panel also includes four groups of connecting members, and each two groups of connecting members are respectively connected to the left and right ends of the same first U-shaped sliding member and are respectively penetrated between the left and right parts of the same slide groove.

19. The display screen bracket according to claim 18, characterized in that: The wall panel also includes a second U-shaped sliding member, and the wall panel frame is provided with a U-shaped sliding groove at a position corresponding to the U-shaped sliding rail on the side away from the horizontal sliding frame, and the second U-shaped sliding member is arranged in the U-shaped sliding groove, and each group of the connecting members is also connected to the second U-shaped sliding member after passing through the sliding groove; and / or, each group of the connecting members includes rivets and screws.

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