Angle adjustment assembly and display support arm

Abstract

The utility model discloses an angle adjusting assembly and display support arm relates to display support technical field. Angle adjusting assembly includes drive unit, and fixed frame has with the first side and the second side of adjacent setting of positive face, and the first side and the second side are adjacent to set up and are equipped with a drive unit respectively, and every drive unit includes carousel, pushes away the axle, connecting rod, second ball head and power part, and one end of connecting rod is equipped with long hole and is connected with fixed frame slidingly, and second ball head sets up in the other end of connecting rod and is rotatably connected with mounting panel, and carousel is rotatably arranged in fixed frame, and power part is arranged in fixed frame and is drivenly connected with carousel, and pushes away the axle and is arranged in carousel and is eccentric with the center of carousel, and the one end of pushing away the axle away from carousel is rotatably arranged in long hole and drives connecting rod to slide to make mounting panel rotate relative to first ball head. The utility model provides technical scheme to realize the automation of display angle adjustment.

Description

Technical Field

[0001] This utility model relates to the field of monitor bracket technology, and in particular to an angle adjustment component and a monitor bracket arm. Background Technology

[0002] With the increasing popularity of monitors, users have placed higher demands on their installation methods. Currently, monitors are mainly installed using monitor arms, with the monitor mounted on a VESA adapter plate on the monitor arm. Monitor arms typically have an angle adjustment component, and the VESA adapter plate is mounted to the support body of the monitor arm via this component. The angle adjustment component allows adjustment of the VESA adapter plate's angle to achieve monitor angle adjustment.

[0003] Most existing monitor arm angle adjustment components use a single hinge structure, with the hinges connected by hexagonal screws. Adjusting the screws adjusts the hinge pressure, and manually adjusting the VESA adapter plate rotates to adjust the monitor angle. Existing angle adjustment components require manual operation, which is inconvenient and cannot automate the angle adjustment process. Utility Model Content

[0004] The main purpose of this invention is to provide an angle adjustment component and a monitor support arm, which aims to automate the adjustment of the monitor angle.

[0005] To achieve the above objectives, the present invention proposes an angle adjustment component for adjusting the angle of a mounting plate, comprising:

[0006] A fixing frame is located on one side of the mounting plate, and the fixing frame has a front facing the mounting plate;

[0007] The first ball head is fixed to the front side and rotatably connected to the mounting plate; and

[0008] The driving unit includes a fixed frame with a first side and a second side adjacent to the front. The first side and the second side are adjacent to each other and each has a driving unit. Each driving unit includes a turntable, a push shaft, a connecting rod, a second ball head, and a power component. One end of the connecting rod has an elongated hole and is slidably connected to the fixed frame. The second ball head is located at the other end of the connecting rod and is rotatably connected to the mounting plate. The turntable is rotatably mounted on the fixed frame. The power component is located on the fixed frame and is drivenly connected to the turntable. The push shaft is located on the turntable and is eccentrically positioned to the center of the turntable. The end of the push shaft away from the turntable is slidably located in the elongated hole and drives the connecting rod to slide so that the mounting plate rotates relative to the first ball head.

[0009] In one embodiment, the angle adjustment component further includes:

[0010] A connecting seat is provided on the side of the mounting plate facing the front, and the connecting seat is provided with a limiting groove, in which the first ball head portion is movably disposed.

[0011] In one embodiment, the connector includes:

[0012] A base is disposed on the side of the mounting plate facing the front, and the side of the base facing the front has a first arc surface, which is arranged around the axis of the base; and

[0013] A limiting cover is provided on the side of the base facing the front. The limiting cover has a through hole, and the inner wall of the through hole has a second arc surface. The second arc surface and the first arc surface together form the limiting groove. The first ball head passes through the through hole and fits against the second arc surface and the first arc surface. The diameter of the through hole is smaller than the outer diameter of the first ball head.

[0014] In one embodiment, the angle adjustment assembly further includes an adjustment bolt, the limiting cover has a first threaded hole, the base has a corresponding second threaded hole, the adjustment bolt passes through the first threaded hole and the second threaded hole in sequence, and the adjustment bolt can adjust the distance between the limiting cover and the base.

[0015] In one embodiment, the outer periphery of the base is provided with a first inclined surface, and the inner periphery of the limiting cover is provided with a second inclined surface. The first inclined surface and the second inclined surface cooperate to guide and restrict the movement of the limiting cover relative to the base.

[0016] In one embodiment, each of the driving units further includes:

[0017] A circuit board is disposed on the fixed frame and located on the side of the turntable opposite to the elongated hole; the circuit board is electrically connected to the power component.

[0018] A Hall effect switch is located on the side of the circuit board facing the turntable and is electrically connected to the circuit board; and

[0019] A magnetic component is disposed on the side of the turntable facing the circuit board and opposite to the push shaft. When the turntable drives the magnetic component to rotate to be opposite the Hall switch, the circuit board controls the power component to stop running.

[0020] In one embodiment, a Hall switch is provided at each of the opposite ends of the circuit board, and the two Hall switches are spaced apart along the axial direction of the connecting rod. The turntable drives the magnetic component to move between the two Hall sensors.

[0021] In one embodiment, each of the driving units further includes:

[0022] A fixing block is provided on the fixing frame, the fixing block has a through hole, and the connecting rod is movably inserted through the through hole.

[0023] In one embodiment, each of the driving units further includes:

[0024] Mounting base, provided on the mounting plate, two mounting bases are provided and detachably connected. Each mounting base has a hemispherical concave surface on one side close to each other. The hemispherical concave surfaces of the two mounting bases together form a spherical groove. The second ball head is movably disposed in the spherical groove. The spherical groove and the second ball head are concentrically arranged. The diameter of the groove opening is smaller than the outer diameter of the second ball head.

[0025] This utility model also proposes a display support arm, including a mounting plate and an angle adjustment assembly as described in any of the above embodiments.

[0026] The technical solution of this utility model involves setting a fixed frame, a first ball head, and a driving unit in the angle adjustment component. The fixed frame is located on one side of the mounting plate and has a front facing the mounting plate. The first ball head is fixed to the front and rotatably connected to the mounting plate. The fixed frame has a first side and a second side adjacent to the front. The first side and the second side are adjacent to each other and each has a driving unit. Each driving unit includes a turntable, a push shaft, a connecting rod, a second ball head, and a power component. One end of the connecting rod has an elongated hole and is slidably connected to the fixed frame. The second ball head is located at the other end of the connecting rod and is rotatably connected to the mounting plate. The turntable is rotatably mounted on the fixed frame. The power component is located on the fixed frame and is driven by the turntable. The push shaft is located on the turntable and is eccentrically positioned with respect to the center of the turntable. The end of the push shaft away from the turntable is slidably located in the elongated hole and drives the connecting rod to slide so that the mounting plate rotates relative to the first ball head. Compared to the manually adjustable angle adjustment components in the prior art, the technical solution of this utility model is equipped with a drive unit. By using a power component to drive the turntable to rotate, the push shaft moves along the elongated hole toward or away from the mounting plate. The push shaft pushes against the wall of the elongated hole, thereby driving the connecting rod to slide toward or away from the mounting plate, so that the mounting plate rotates relative to the first ball head, thus realizing the automation of the mounting plate angle adjustment, and thus realizing the automation of the display angle adjustment. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the angle adjustment component provided by this utility model;

[0029] Figure 2 for Figure 1 A cross-sectional view of one embodiment;

[0030] Figure 3 for Figure 1 A schematic diagram of one embodiment of the connecting seat.

[0031] Explanation of icon numbers:

[0032] 10. Angle adjustment assembly; 20. Mounting plate; 30. Connecting plate;

[0033] 100. Fixing frame; 110. First side; 120. Second side; 130. Wire hole;

[0034] 210. First ball head; 220. Extension section;

[0035] 310. Turntable; 320. Push shaft; 330. Connecting rod; 331. Elongated hole; 340. Second ball head; 350. Power component; 360. Circuit board; 361. Hall switch; 370. Fixing block; 380. Mounting base;

[0036] 400. Connecting seat; 410. Base; 411. First arc surface; 412. First inclined surface; 420. Limiting cover; 421. Second arc surface; 422. Second inclined surface.

[0037] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0039] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0040] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0041] With the increasing popularity of monitors, users have placed higher demands on their installation methods. Currently, monitors are mainly installed using monitor arms, with the monitor mounted on a VESA adapter plate on the monitor arm. Monitor arms typically have an angle adjustment component, and the VESA adapter plate is mounted to the support body of the monitor arm via this component. The angle adjustment component allows adjustment of the VESA adapter plate's angle to achieve monitor angle adjustment.

[0042] Most existing monitor arm angle adjustment components use a single hinge structure, with the hinges connected by hexagonal screws. Adjusting the screws adjusts the hinge pressure, and manually adjusting the VESA mounting plate rotates the monitor to adjust the angle. Existing angle adjustment components require manual operation, which is inconvenient and cannot automate the angle adjustment process.

[0043] This invention proposes an angle adjustment component and a monitor support arm to automate monitor angle adjustment.

[0044] Please see Figure 1 and Figure 2In one embodiment, the angle adjustment assembly 10 includes a fixed frame 100, a first ball head 210, and a drive unit. The fixed frame 100 is located on one side of the mounting plate 20 and has a front facing the mounting plate 20. The first ball head 210 is fixed to the front and rotatably connected to the mounting plate 20. The fixed frame 100 has a first side 110 and a second side 120 adjacent to the front. The first side 110 and the second side 120 are adjacent to each other and each has a drive unit. Each drive unit includes a turntable 310, a push shaft 320, a connecting rod 330, and a second ball head 340. The connecting rod 330 has an elongated hole 331 at one end and is slidably connected to the fixed frame 100. The second ball head 340 is located at the other end of the connecting rod 330 and is rotatably connected to the mounting plate 20. The turntable 310 is rotatably mounted on the fixed frame 100. The power component 350 is located on the fixed frame 100 and is drivenly connected to the turntable 310. The push shaft 320 is located on the turntable 310 and is eccentrically set with respect to the center of the turntable 310. The end of the push shaft 320 away from the turntable 310 is slidably located in the elongated hole 331 and drives the connecting rod 330 to slide so that the mounting plate 20 rotates relative to the first ball head 210.

[0045] Angle adjustment component 10 is used to adjust the angle of mounting plate 20. The angle adjustment component 10 is located on one side of mounting plate 20, and the other side of mounting plate 20 is used to mount a monitor. The angle adjustment component 10 adjusts the angle of the monitor by adjusting the angle of mounting plate 20. Mounting plate 20 is typically a VESA adapter board; however, this is not a limitation.

[0046] The fixing frame 100 serves as a support and mounting base for the angle adjustment assembly 10. The mounting plate 20 is located on one side of the fixing frame 100, with the side of the fixing frame 100 facing the mounting plate 20 being the front. In the initial state, the mounting plate 20 is vertical, meaning the plane of the mounting plate 20 is parallel to the front. In one embodiment, a connecting plate 30 is provided on the side of the fixing frame 100 away from the mounting plate 20. The connecting plate 30 is used for fixed connection to the support body of the display bracket arm, thereby mounting the fixing frame 100 onto the support body. Specifically, in one embodiment, the connecting plate 30 has multiple mounting holes for mounting the connecting plate 30 onto the support body using fasteners such as bolts or rivets. Of course, in other embodiments, the connecting plate 30 can also be welded or snapped to the support body, or the fixing frame 100 can be directly connected to the support body; no limitation is imposed here.

[0047] The first ball joint 210 is used to achieve a movable connection between the fixed frame 100 and the mounting plate 20. In one embodiment, the first ball joint 210 has an extension 220 at one end facing the front. The extension 220 is screwed to the center of the fixed frame 100 opposite to the front of the mounting plate 20, so that the first ball joint 210 is locked onto the fixed frame 100. The other end of the first ball joint 210 is movably connected to the mounting plate 20. The mounting plate 20 is always confined to the first ball joint 210, and the mounting plate 20 can rotate in multiple directions relative to the first ball joint 210 along the spherical surface of the first ball joint 210.

[0048] The driving unit drives the mounting plate 20 to rotate relative to the first ball head 210, thereby causing the mounting plate 20 to rotate relative to the fixed frame 100, thus achieving angle adjustment. Two driving units are provided, one on the first side 110 and the other on the second side 120, to achieve angle adjustment of the mounting plate 20 in four directions. Specifically, in one embodiment, the planes containing the front surface, the first side 110, and the second side 120 are perpendicular to each other. The first side 110 and the second side 120 are located on the side of the front surface away from the mounting plate 20 and are connected to the adjacent two sides of the front surface. The first side 110 can be located at the upper or lower end of the second side 120; this is not limited. The following description uses the example of the first side 110 being located at the upper end of the second side 120.

[0049] A drive unit located on the first side 110 is used to swing the mounting plate 20 in the vertical direction, thereby tilting the mounting plate 20 forward or backward. One end of the connecting rod 330 is slidably connected to the first side 110, and the other end of the connecting rod 330 is rotatably connected to the mounting plate 20 through a second ball head 340. The connection point between the second ball head 340 and the mounting plate 20 is near the upper end of the mounting plate 20. A turntable 310 is rotatably located on the first side 110, between the connecting rod 330 and the first side 110. The turntable 310 is parallel to and opposite to the elongated hole 331. A push shaft 320 is located on the side of the turntable 310 facing the elongated hole 331 and is eccentrically positioned with the turntable 310. The push shaft 320 is tangentially in contact with the wall of the elongated hole 331 to ensure that the rotation of the turntable 310 can drive the push shaft 320 to rotate around the center of the turntable 310 and move along the elongated hole 331. The elongated hole 331 extends perpendicularly to the axial direction of the connecting rod 330. The output shaft of the power component 350 is connected to the center of the turntable 310 to drive the turntable 310 to rotate around its own axial direction. The power component 350 can be configured as a motor or a cylinder, etc., and there is no limitation here.

[0050] In the initial state, the push shaft 320 is located at the end of the elongated hole 331, the connecting plate 20 is parallel to the front of the fixed frame 100, and the elongated hole 331 coincides with the center of the turntable 310. The power component 350 drives the turntable 310 to rotate around its own axis in the first direction, causing the push shaft 320 to move away from the mounting plate 20. The push shaft 320 pushes against the wall of the elongated hole 331 and moves along the wall of the elongated hole 331, causing the connecting rod 330 to move away from the mounting plate 20. The connecting rod 330 pulls the mounting plate 20, causing the mounting plate 20 to rotate relative to the first ball head 210 and the second ball head 340. The upper end of the mounting plate 20 tilts towards the fixed frame 100, realizing the backward tilting of the mounting plate 20. The power component 350 can also drive the turntable 310 to rotate around its own axis in the second direction, causing the push shaft 320 to move towards the mounting plate 20. The push shaft 320 pushes against the wall of the elongated hole 331 and moves along the wall of the elongated hole 331, causing the connecting rod 330 to move towards the mounting plate 20. The connecting rod 330 pushes the mounting plate 20, causing the mounting plate 20 to rotate relative to the first ball head 210 and the second ball heads 340 of the two drive units. The upper end of the mounting plate 20 tilts away from the fixed frame 100, achieving a forward tilt of the mounting plate 20. The first direction and the second direction are respectively clockwise and counterclockwise, and the first direction is opposite to the second direction; however, this is not a limitation.

[0051] The drive unit located on the second side 120 is used to swing the mounting plate 20 in the horizontal direction, thereby tilting the mounting plate 20 to the left or right. The setting and driving process of the drive unit located on the second side 120 are the same as those of the drive unit located on the first side 110, and will not be repeated here. In this way, the angle of the mounting plate 20 in four directions can be adjusted through two drive units, improving the flexibility of use.

[0052] The technical solution of this utility model involves setting a fixed frame 100, a first ball head 210, and a driving unit in the angle adjustment component 10. The fixed frame 100 is located on one side of the mounting plate 20 and has a front facing the mounting plate 20. The first ball head 210 is fixed to the front and rotatably connected to the mounting plate 20. The fixed frame 100 has a first side 110 and a second side 120 adjacent to the front. The first side 110 and the second side 120 are adjacent to each other and each has a driving unit. Each driving unit includes a turntable 310, a push shaft 320, a connecting rod 330, and a second ball head. The connecting rod 330 has an elongated hole 331 at one end and is slidably connected to the fixed frame 100. The second ball head 340 is located at the other end of the connecting rod 330 and is rotatably connected to the mounting plate 20. The turntable 310 is rotatably mounted on the fixed frame 100. The power component 350 is located on the fixed frame 100 and is drivenly connected to the turntable 310. The push shaft 320 is located on the turntable 310 and is eccentrically positioned with respect to the center of the turntable 310. The end of the push shaft 320 away from the turntable 310 is slidably located in the elongated hole 331 and drives the connecting rod 330 to slide so that the mounting plate 20 rotates relative to the first ball head 210. Compared to the manually adjustable angle adjustment component 10 in the prior art, the technical solution of this utility model is provided with a drive unit. By using the power component 350 to drive the turntable 310 to rotate, the push shaft 320 is driven to move along the elongated hole 331 in a direction closer to or away from the mounting plate 20. The push shaft 320 pushes against the hole wall of the elongated hole 331, thereby driving the connecting rod 330 to slide in a direction closer to or away from the mounting plate 20, so that the mounting plate 20 rotates relative to the first ball head 210, realizing the automation of the angle adjustment of the mounting plate 20, and thus realizing the automation of the display angle adjustment.

[0053] Please see Figure 1 In one embodiment, the angle adjustment assembly 10 further includes a connecting seat 400 disposed on the side of the mounting plate 20 facing the front. The connecting seat 400 is provided with a limiting groove, and the first ball head 210 is partially movably disposed in the limiting groove.

[0054] The first ball head 210 is mostly positioned within the limiting groove, and the inner diameter of the limiting groove opening is smaller than the outer diameter of the first ball head 210, so as to restrict the movement of the first ball head 210 within the limiting groove.

[0055] Please see Figure 2 and Figure 3In one embodiment, the connecting seat 400 includes a base 410 and a limiting cover 420. The base 410 is disposed on the side of the mounting plate 20 facing the front. The side of the base 410 facing the front is provided with a first arc surface 411, which is arranged around the axis of the base 410. The limiting cover 420 is disposed on the side of the base 410 facing the front. The limiting cover 420 is provided with a through hole. The inner wall of the through hole is provided with a second arc surface 421. The second arc surface 421 and the first arc surface 411 together form a limiting groove. The first ball head 210 passes through the through hole and fits against the second arc surface 421 and the first arc surface 411. The diameter of the through hole is smaller than the outer diameter of the first ball head 210.

[0056] In one embodiment, the base 410 and the mounting plate 20 are detachably connected. The base 410 and the mounting plate 20 can be detachably connected by means of screws or snap-fits. Of course, in other embodiments, the base 410 and the mounting plate 20 can also be connected by welding or integral molding; this is not a limitation. The base 410 has a mounting groove on the side facing away from the mounting plate 20. The mounting groove is coaxial with the through hole, and the groove wall is a first arc surface 411. The groove opening is located near the front side to allow the first ball head 210 to extend into the mounting groove from the groove opening. The first arc surface 411 and the second arc surface 421 are both fitted to the spherical surface of the first ball head 210, so that the connecting seat 400 and the first ball head 210 are in spherical contact. In one embodiment, the end of the first ball head 210 facing the mounting plate 20 is cut with a first vertical surface. The bottom of the mounting groove is hollow, and the first vertical surface is used to abut against the mounting plate 20 to limit the range of motion of the mounting plate 20. The inner diameter of the through hole is larger than the outer diameter of the extension 220 and smaller than the outer diameter of the first ball head 210.

[0057] When installing the first ball head 210, firstly, the extension 220 is passed through the through hole of the limiting cover 420, so that the limiting cover 420 is fitted onto the first ball head 210; then, the extension 220 is fixed to the fixing frame 100, and the end of the first ball head 210 is placed on the base 410, with the first ball head 210 fitting against the first arc surface 411; the limiting cover 420 and the base 410 are connected. Since the inner diameter of the through hole of the limiting cover 420 is smaller than the outer diameter of the first ball head 210, the limiting cover 420 restricts the first ball head 210 to the base 410, thus completing the installation.

[0058] The technical solution of this utility model embodiment, by setting a base 410 and a limiting cover 420, realizes the rotational connection between the first ball head 210 and the mounting plate 20, and can prevent the first ball head 210 from separating from the mounting plate 20, thereby improving the connection reliability.

[0059] In one embodiment, the angle adjustment assembly 10 further includes an adjustment bolt (not shown), the limiting cover 420 is provided with a first threaded hole, the base 410 is provided with a corresponding second threaded hole, the adjustment bolt passes through the first threaded hole and the second threaded hole in sequence, and the adjustment bolt can adjust the distance between the limiting cover 420 and the base 410.

[0060] The distance between the limiting cover 420 and the base 410 affects the distance between the first arc surface 411 and the center of the first ball head 210, as well as the distance between the second arc surface 421 and the center of the first ball head 210, which in turn affects the tightness of the rotational connection between the first ball head 210 and the mounting plate 20. Therefore, by controlling the distance between the limiting cover 420 and the base 410, the tightness of the rotational connection between the first ball head 210 and the mounting plate 20 can be controlled, thereby changing the magnitude of the force required to achieve the rotation of the mounting plate 20 relative to the first ball head 210.

[0061] In one embodiment, multiple first threaded holes are spaced around the through hole, and multiple second threaded holes are correspondingly provided. Each set of first and second threaded holes can be detachably connected by an adjusting bolt. Further, in one embodiment, the angle adjustment assembly 10 also includes a nut. The base 410 has multiple nut grooves on the side facing the mounting plate 20. These nut grooves correspond one-to-one with and are coaxially arranged with the multiple first threaded holes. The nut is placed in the nut groove, and the adjusting bolt is sequentially screwed into the first and second threaded holes before being screwed into the nut, to further ensure the stability of the connection between the limiting cover 420 and the base 410. The shape of the nut groove is designed to fit the nut; the nut can be a hexagonal nut or a square nut, etc., without limitation.

[0062] During the process of connecting the limiting cover 420 and the base 410, first adjust the required distance between the limiting cover 420 and the base 410; then use manual or external tools to position the limiting cover 420 and the base 410 to prevent displacement of the limiting cover 420 and the base 410 when the adjusting bolt is connected to the limiting cover 420 and the base 410, which would affect the distance between them; then pass the adjusting bolt through the first threaded hole and the second threaded hole in sequence and screw them into the first threaded hole and the second threaded hole to complete the connection.

[0063] The technical solution of this utility model embodiment is to adjust the distance between the limiting cover 420 and the base 410 by setting threaded holes in the limiting cover 420 and the base 410 and using adjusting bolts. This allows for adjustment of the force required for the mounting plate 20 to rotate relative to the first ball head 210, ensuring that the required force is matched with the driving force of the driving unit, and improving the flexibility and reliability of the angle adjustment component 10.

[0064] Please see Figure 2 and Figure 3In one embodiment, the outer periphery of the base 410 is provided with a first inclined surface 412, and the inner periphery of the limiting cover 420 is provided with a second inclined surface 422. The first inclined surface 412 and the second inclined surface 422 cooperate to guide and limit the movement of the limiting cover 420 relative to the base 410.

[0065] Specifically, in one embodiment, the outer periphery of the base 410 has a first protrusion protruding towards the front. The first protrusion is coaxial with and spaced apart from the mounting groove. The outer peripheral surface of the first protrusion is a first inclined surface 412, and the end of the first inclined surface 412 away from the mounting plate 20 is inclined in a direction close to the axis of the mounting groove. The outer periphery of the limiting cover 420 has a second protrusion protruding towards the mounting plate 20. The second protrusion is coaxial with and spaced apart from the through hole. The inner peripheral surface of the second protrusion is a second inclined surface 422, and the end of the second inclined surface 422 near the mounting plate 20 is inclined in a direction away from the axis of the through hole.

[0066] During the process of connecting the limiting cover 420 and the base 410, the second inclined surface 422 of the limiting cover 420 abuts against the first inclined surface 412 of the base 410, and the distance between the limiting cover 420 and the base 410 is adjusted by adjusting the contact area between the second inclined surface 422 and the first inclined surface 412; then the limiting cover 420 and the base 410 are positioned manually or with external tools. At this time, the first inclined surface 412 and the second inclined surface 422 abut against each other, further preventing relative displacement between the limiting cover 420 and the base 410; the adjusting bolt is screwed into the first threaded hole and the second threaded hole to complete the connection. At this time, the first inclined surface 412 and the second inclined surface 422 abut against each other, so that the base 410 can provide support and positioning for the limiting cover 420.

[0067] The technical solution of this utility model embodiment, by setting a first inclined surface 412 and a second inclined surface 422, on the one hand, can guide the limiting cover 420 to cover the base 410, improving the connection convenience; on the other hand, by controlling the contact area between the second inclined surface 422 and the first inclined surface 412, the distance between the limiting cover 420 and the base 410 can be controlled, and the first inclined surface 412 and the second inclined surface 422 always abut against each other, so that the limiting cover 420 and the base 410 are always coaxially arranged, avoiding the limiting cover 420 from moving up and down relative to the base 410, thus improving the connection reliability.

[0068] Please see Figure 1 and Figure 2In one embodiment, each drive unit further includes a circuit board 360, a Hall switch 361, and a magnetic component. The circuit board 360 is disposed on the fixed frame 100 and located on the side of the turntable 310 opposite to the elongated hole 331. The circuit board 360 is electrically connected to the power component 350. The Hall switch 361 is disposed on the side of the circuit board 360 facing the turntable 310 and is electrically connected to the circuit board 360. The magnetic component (not shown) is disposed on the bottom of the turntable 310 facing the circuit board 360 and is disposed opposite to the push shaft 320. When the turntable 310 drives the magnetic component to rotate to be opposite to the Hall switch 361, the circuit board 360 controls the power component 350 to stop running.

[0069] In one embodiment, the fixing frame 100 has an internal receiving groove, and the front, first side 110, and second side 120 are all outer walls of the receiving groove. The fixing frame 100 also has a connection port communicating with the receiving groove, and the power component 350 is disposed in the receiving groove, with the output shaft of the power component 350 passing through the connection port to connect with the center of the turntable 310. In one embodiment, the circuit board 360 is configured as a disc-shaped structure, and the circuit board 360 is coaxially arranged with the turntable 310. The center of the circuit board 360 has a clearance hole, and the inner diameter of both the clearance hole and the connection port is larger than the outer diameter of the output shaft of the power component 350. The output shaft of the power component 350 passes through the connection port and the clearance hole in sequence. Further, in one embodiment, the fixing frame 100 has a mounting groove, and the circuit board 360 is disposed in the mounting groove. The fixing frame 100 also has a wire hole 130 communicating with the receiving groove, so that the wires can electrically connect the circuit board 360 and the power component 350 through the wire hole 130. Of course, in other embodiments, the circuit board 360 may also be configured as a rectangle or an irregular shape, etc., without limitation.

[0070] Hall switch 361 is located on the side of circuit board 360 facing turntable 310 and near the end of circuit board 360. Hall switch 361 is located along the axis of connecting rod 330. Hall switch 361 can sense the strength of magnetic field. When the magnetic component is opposite to Hall switch 361, the magnetic field strength sensed by Hall switch 361 is the strongest. At this time, Hall switch 361 will output a level signal to circuit board 360. After receiving the level signal, circuit board 360 controls the power component 350 to stop running.

[0071] Please see Figure 2 In one embodiment, a Hall switch 361 is provided at each of the opposite ends of the circuit board 360. The two Hall switches 361 are spaced apart along the axial direction of the connecting rod 330, and the turntable 310 drives the magnetic component to move between the two Hall switches 361.

[0072] Since the extension direction of the elongated hole 331 is perpendicular to the axial direction of the connecting rod 330, and in the initial state, the push shaft 320 is located at the end of the elongated hole 331, and the center of the elongated hole 331 coincides with that of the turntable 310, when the push shaft 320 moves along the wall of the elongated hole 331 in the first or second direction to the axial direction of the connecting rod 330, the moving distance of the connecting rod 330 relative to the fixed frame 100 is at its maximum, that is, the mounting plate 20 is at its maximum adjustable angle; at this time, the magnetic component is opposite to one of the Hall switches 361.

[0073] The power unit 350 of the drive unit located on the first side 110 drives the turntable 310 to move the push shaft 320 and the magnetic component between two Hall switches 361. The two Hall switches 361 cooperate with the magnetic component to control the power unit 350, so that when the mounting plate 20 tilts forward or backward to its maximum angle, the power unit 350 can stop driving the connecting rod 330 in time. Specifically, when the turntable 310 drives the push shaft 320 and the magnetic component to rotate in the first direction, and the magnetic component is opposite to a Hall switch 361 further away from the mounting plate 20, it indicates that the mounting plate 20 has tilted backward to its maximum angle. The Hall switch 361 outputs a level signal to the circuit board 360 to control the power unit 350 to stop operating. When the turntable 310 drives the push shaft 320 and the magnetic component to rotate in the second direction, and the magnetic component is opposite to a Hall switch 361 closer to the mounting plate 20, it indicates that the mounting plate 20 has tilted forward to its maximum angle. The Hall switch 361 outputs a level signal to the circuit board 360 to control the power unit 350 to stop operating. Specifically, in one embodiment, the travel range of the power component 350 driving the turntable 310 to rotate in the first or second direction is one-quarter or one-half of the circumference of the turntable 310 each time, so that the mounting plate 20 can be adjusted from the initial state to the maximum angle of forward tilt or backward tilt, or the mounting plate 20 can be changed from the maximum angle of forward tilt to the maximum angle of backward tilt. Of course, in other embodiments, the travel range can be flexibly set according to actual needs, and there is no limitation here.

[0074] The power unit 350 of the drive unit located on the second side 120 also drives the turntable 310 to move the push shaft 320 and the magnetic component between the two Hall switches 361. The two Hall switches 361 cooperate with the magnetic component to control the power unit 350, so that when the mounting plate 20 tilts to the left or right to its maximum angle, the power unit 350 can stop driving the connecting rod 330 in time. The operation of the Hall switch 361 of the drive unit located on the second side 120 is the same as that of the Hall switch 361 of the drive unit located on the first side 110, and will not be described again here.

[0075] The technical solution of this utility model embodiment, by setting a Hall switch 361 and a magnetic component in the drive unit, enables the power component 350 to stop running in time when the mounting plate 20 is adjusted to the maximum angle, thereby realizing intelligent angle adjustment and further improving the reliability of the angle adjustment component 10.

[0076] Please see Figure 1 and Figure 2 In one embodiment, each drive unit further includes a fixing block 370 disposed on the fixing frame 100. The fixing block 370 is provided with a through hole, and the connecting rod 330 is movably inserted through the through hole.

[0077] In one embodiment, the fixing block 370 includes two limiting parts, one side of which is fixed to the fixing frame 100, and the other side is detachably connected to the other limiting part. Both limiting parts have arc-shaped grooves on their adjacent sides, forming a through hole. In another embodiment, a through hole is directly provided at the center of the fixing block 370. The through hole is coaxial with the connecting rod 330, and the inner diameter of the through hole is slightly larger than the outer diameter of the connecting rod 330 to ensure that the connecting rod 330 can slide relative to the through hole.

[0078] The technical solution of this utility model embodiment, by setting a fixing block 370 in the driving unit, ensures that the connecting rod 330 slides along the fixing frame 100 while restricting the connecting rod 330 to the fixing frame 100, so as to constrain the connecting rod 330 to always perform linear reciprocating motion relative to the fixing frame 100, thereby ensuring installation reliability.

[0079] Please see Figure 1 and Figure 2 In one embodiment, each drive unit further includes a mounting base 380 disposed on the mounting plate 20. There are two mounting bases 380, which are detachably connected. Each mounting base 380 has a hemispherical concave surface on one side that is close to each other. The hemispherical concave surfaces of the two mounting bases 380 together form a spherical groove. The second ball head 340 is partially movably disposed in the spherical groove. The spherical groove and the second ball head 340 are concentrically arranged. The diameter of the opening of the spherical groove is smaller than the outer diameter of the second ball head 340.

[0080] Most of the movement of the second ball head 340 is within the spherical groove, meaning the center of the second ball head 340 is located within the spherical groove. Since the diameter of the groove opening is smaller than the outer diameter of the second ball head 340, the second ball head 340 can be confined within the groove. In one embodiment, the two mounting seats 380 are symmetrically arranged with respect to the axis of the connecting rod 330. The side of the two mounting seats 380 furthest from the fixed frame 100 is fixed to the mounting plate 20, and the opening of the spherical groove is located on the side of the two mounting seats 380 facing the fixed frame 100. Further, in one embodiment, the end of the second ball head 340 facing the mounting plate 20 is cut with a second vertical surface to reduce the contact area between the second ball head 340 and the spherical groove, thereby reducing the frictional resistance when the mounting plate 20 rotates relative to the second ball head 340.

[0081] The technical solution of this utility model embodiment realizes the rotational connection between the second ball head 340 and the mounting plate 20 by setting the mounting base 380 in the drive unit, and can avoid the separation of the second ball head 340 and the mounting base 380, thereby improving the connection reliability.

[0082] This utility model also proposes a display stand arm, including a mounting plate 20 and an angle adjustment component 10 as described in the above embodiments. The specific structure of the angle adjustment component 10 is as described in the above embodiments. Since this angle adjustment component 10 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0083] In one embodiment, the mounting plate 20 has multiple connection holes conforming to the VESA standard for connection to the display using fasteners such as screws or rivets. The display and the angle adjustment assembly 10 are located on opposite sides of the mounting plate 20. The hole spacing is 75×75mm or 100×100mm. Of course, in other embodiments, the mounting plate 20 and the display can also be connected by snap-fit ​​or magnetic attraction, etc., which is not limited here.

[0084] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. An angle adjustment assembly for adjusting the angle of a mounting plate, characterized in that, include: A fixing frame is located on one side of the mounting plate, and the fixing frame has a front facing the mounting plate; The first ball head is fixed to the front side and rotatably connected to the mounting plate; as well as The driving unit includes a fixed frame with a first side and a second side adjacent to the front. The first side and the second side are adjacent to each other and each has a driving unit. Each driving unit includes a turntable, a push shaft, a connecting rod, a second ball head, and a power component. One end of the connecting rod has an elongated hole and is slidably connected to the fixed frame. The second ball head is located at the other end of the connecting rod and is rotatably connected to the mounting plate. The turntable is rotatably mounted on the fixed frame. The power component is located on the fixed frame and is drivenly connected to the turntable. The push shaft is located on the turntable and is eccentrically positioned to the center of the turntable. The end of the push shaft away from the turntable is slidably located in the elongated hole and drives the connecting rod to slide so that the mounting plate rotates relative to the first ball head.

2. The angle adjustment component as described in claim 1, characterized in that, The angle adjustment component also includes: A connecting seat is provided on the side of the mounting plate facing the front, and the connecting seat is provided with a limiting groove, in which the first ball head portion is movably disposed.

3. The angle adjustment component as described in claim 2, characterized in that, The connector includes: A base is disposed on the side of the mounting plate facing the front, and the side of the base facing the front has a first arc surface, which is arranged around the axis of the base; and A limiting cover is provided on the side of the base facing the front. The limiting cover has a through hole, and the inner wall of the through hole has a second arc surface. The second arc surface and the first arc surface together form the limiting groove. The first ball head passes through the through hole and fits against the second arc surface and the first arc surface. The diameter of the through hole is smaller than the outer diameter of the first ball head.

4. The angle adjustment component as described in claim 3, characterized in that, The angle adjustment assembly also includes an adjustment bolt. The limiting cover has a first threaded hole, and the base has a corresponding second threaded hole. The adjustment bolt passes through the first threaded hole and the second threaded hole in sequence, and the adjustment bolt can adjust the distance between the limiting cover and the base.

5. The angle adjustment component as described in claim 3, characterized in that, The base has a first inclined surface on its outer periphery, and the limiting cover has a second inclined surface on its inner periphery. The first inclined surface and the second inclined surface cooperate to guide and restrict the movement of the limiting cover relative to the base.

6. The angle adjustment component as described in claim 1, characterized in that, Each of the drive units further includes: A circuit board is disposed on the fixed frame and located on the side of the turntable opposite to the elongated hole; the circuit board is electrically connected to the power component. A Hall effect switch is located on the side of the circuit board facing the turntable and is electrically connected to the circuit board; and A magnetic component is disposed on the side of the turntable facing the circuit board and opposite to the push shaft. When the turntable drives the magnetic component to rotate to be opposite the Hall switch, the circuit board controls the power component to stop running.

7. The angle adjustment component as described in claim 6, characterized in that, A Hall switch is provided at each of the opposite ends of the circuit board. The two Hall switches are spaced apart along the axial direction of the connecting rod. The turntable drives the magnetic component to move between the two Hall switches.

8. The angle adjustment component as described in claim 1, characterized in that, Each of the drive units further includes: A fixing block is provided on the fixing frame, the fixing block has a through hole, and the connecting rod is movably inserted through the through hole.

9. The angle adjustment component as described in claim 1, characterized in that, Each of the drive units further includes: Mounting base, provided on the mounting plate, two mounting bases are provided and detachably connected. Each mounting base has a hemispherical concave surface on one side close to each other. The hemispherical concave surfaces of the two mounting bases together form a spherical groove. The second ball head is movably disposed in the spherical groove. The spherical groove and the second ball head are concentrically arranged. The diameter of the groove opening is smaller than the outer diameter of the second ball head.

10. A monitor stand arm, characterized in that, It includes a mounting plate and an angle adjustment assembly as described in any one of claims 1 to 9.

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