Monitor stand for office desk

Abstract

The invention discloses a display stand for an office desk, comprising a desk, wherein a through hole one is provided on the desk, a bottom plate is fixedly installed in the through hole one, a movable base is placed on the bottom plate, the length of the through hole one is greater than the length of the movable base, grooves are symmetrically provided on the two side walls of the through hole one, two dust covers are placed between the two grooves, the two dust covers extend to the side walls of the two grooves, one end of the two dust covers is respectively fixed to the two end portions of the corresponding grooves, and the other ends are respectively fixedly connected to the outer walls of the two ends of the movable base, four supporting columns are symmetrically provided in the movable base, a fixed seat is fixedly installed on the four supporting columns, a rotating seat is rotatably connected to the fixed seat, a display lifting seat is provided on the rotating seat, a control component for controlling the movement of the movable base and the rotation of the rotating seat is provided between the fixed seat and the movable base, and the invention provides a forward and backward movement adjustment function and a rotation function, so that the user can reach out to adjust the screen to a suitable angle and distance when sitting, thereby maintaining a healthy working posture and reducing potential pressure on the eyes and neck.

Description

Technical Field

[0001] The invention relates to the technical field of display brackets, in particular to a display bracket for an office desk. Background Art

[0002] As the design and functionality of modern monitors and their stands continue to evolve, these products are designed to meet the diverse needs of office, entertainment, and professional applications. With the advancement of technology, monitors have achieved significant improvements in resolution, color accuracy, refresh rate, etc., providing a more immersive visual experience. At the same time, the design trend of monitors is also moving towards thinner and lighter designs with narrower bezels to accommodate display devices of different sizes and weights.

[0003] Most monitor stands on the current market mainly provide angle adjustment and lifting functions, allowing users to adjust the height and tilt angle of the monitor as needed to optimize the viewing experience. However, existing stand designs generally lack the function of forward and backward movement adjustment. When users want to change the distance between the monitor and their eyes, such as when working for a long time, in order to reduce eye fatigue after long-term use or adjust to a more comfortable visual distance, they can usually only achieve this adjustment by standing up, moving the chair, and manually pushing the monitor. This operation method is not only inconvenient, but also requires the user to sit down and observe the effect after each adjustment. If the position is not ideal, it is necessary to continue to adjust until the most suitable viewing distance is found. This adjustment method is both time-consuming and inefficient. Summary of the invention

[0004] The object of the present invention is to provide a display stand for an office table to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A monitor stand for an office table, comprising a table, wherein a through hole 1 is provided on the table, a bottom plate is fixedly installed in the through hole 1, a movable base is placed on the bottom plate, the length of the through hole 1 is greater than the length of the movable base, grooves are symmetrically provided on the two side walls of the through hole 1, two dust covers are placed between the two grooves, the two dust covers extend to the side walls of the two grooves, one end of the two dust covers is respectively fixed to the two end portions of the corresponding grooves, and the other ends are respectively fixedly connected to the outer walls of the two ends of the movable base, four supporting columns are symmetrically provided in the movable base, a fixed seat is fixedly installed on the four supporting columns, a rotating seat is rotatably connected to the fixed seat, a monitor lifting seat is provided on the rotating seat, and a control component for controlling the movement of the movable base and the rotation of the rotating seat is provided between the fixed seat and the movable base;

[0007] The control component includes a rotating bearing 1, which is composed of an inner bearing and an outer bearing that move independently inside and outside. One side of the outer bearing is fixedly connected to a rotating knob with a hollow center, and the other side of the outer bearing is fixedly connected to a conical tooth 1. The fixed seat is located on one side of the rotating bearing 1 and is provided with an avoidance position 1. The fixed seat is located on the avoidance position 1 and is provided with two fixing plates. Rotating bearings 2 are fixedly installed on the two fixing plates. A rotating rod is installed in the center of the two rotating bearings 2. One end of the rotating rod is fixedly connected to a gear 2, and the other end of the gear 2 is fixedly connected to the gear 2. One end is fixedly connected with conical tooth 2 which meshes with conical tooth 1, and the outer edge of the bottom of the rotating seat is provided with an arc-shaped rack which meshes with gear 2. A gear shaft is fixedly connected to the inner bearing, one end of the gear shaft extends to the central hollow of the rotating knob and is fixedly connected with a moving knob, and the other end is rotatably connected to the side wall of the moving base, and the gear shaft is located below the center of the fixed seat and is fixedly connected with gear 1, a moving hole is provided at the bottom of the moving base, and a fixed rack which can pass through the moving hole is provided on the bottom plate, and the fixed rack meshes with gear 1.

[0008] Furthermore, corresponding annular grooves are provided at the bottom of the rotating seat and the top of the fixed seat, and a number of balls are placed in the annular grooves. The front and rear ends of the rotating seat and the fixed seat are provided with connecting arc holes, and screws are passed through the arc holes. The other end of the screw is threadedly connected with a nut, and the nut is located below the fixed seat.

[0009] Furthermore, the display lifting seat includes a column, a lifting hole is vertically provided on the column, a connecting column is passed through the lifting hole, a display mounting seat is provided at one end of the connecting column, and a strap piece is provided at the other end, a sling is fixedly connected to the strap piece, the sling is wrapped around the transition piece, and a counterweight is fixedly connected to the other end of the sling.

[0010] Furthermore, the weight of the counterweight block is less than the total weight of the display plus the display mounting base and the strap. The counterweight block is a permanent magnet. A magnetic levitation base is provided directly below the counterweight block. A placement hole is provided on the front side of the column. A magnetic control device electrically connected to the magnetic levitation base is fixedly installed in the placement hole. The magnetic control device includes a magnetic control knob, a display screen and a power switch. The magnetic control knob is used to adjust the magnetic output of the magnetic levitation base, and the display screen is used to display magnetic parameters.

[0011] Furthermore, the display mounting base includes a connecting plate and a connecting base installed on the connecting plate, the connecting plate is symmetrically provided with two through holes on both sides of the connecting base, a plurality of card slots corresponding to the two through holes are longitudinally distributed on the front side of the column, and a mounting piece is installed on the connecting plate above the two through holes, and a movable hole corresponding to the two through holes is provided on the mounting piece, a movable rod is movably connected in the movable hole, a card block that can be inserted into the card slot is fixedly connected to the bottom of the movable rod, and a pull ring is provided on the top of the movable rod, and the pull ring is located above the mounting piece.

[0012] Furthermore, limit clamps are installed on both sides of the counterweight block inside the column, and slide grooves are provided on the inner walls of the limit clamps. Both sides of the counterweight block are provided with protrusions that can slide along the slide grooves, and the bottom of the slide groove gradually narrows.

[0013] Furthermore, the top of the position-limiting clamping plate is provided with an extension portion extending toward the center, and a second avoidance position for the sling to move is provided between the extension portions.

[0014] Furthermore, the table is provided with openings for inserting plugs at the ends of the two grooves, the plugs are in a convex shape, the dust cover is provided with a socket at one end of the opening, a slot connected to the socket is provided at the bottom of the groove, and the protruding end of the plug passes through the socket and is inserted into the slot.

[0015] Furthermore, a roller frame is symmetrically provided at the bottom of the movable base, a plurality of buffer holes are provided on both sides of the roller frame, a plurality of the buffer holes are movably connected with roller shafts, a plurality of the rotating rods are rotatably connected with rollers, a plurality of the rollers are in contact with the upper end surface of the bottom plate, a buffer frame is rotatably connected between both sides of each roller and the roller frame, a plurality of the buffer frames are provided with a plurality of positioning columns passing through the bottom of the movable base, a plurality of the positioning columns are covered with buffer springs, one end of the buffer spring abuts against the buffer frame, and the other end abuts against the bottom of the movable base, and the top of the bottom plate is provided with four positioning grooves corresponding to the rollers on both sides, two of which are located at the front end of the bottom plate, and the other two are located at the rear end of the bottom plate.

[0016] Furthermore, the rotating seat includes an upper base and a lower base which are closely attached to each other, a rotating column extending vertically downward is provided at the center of the upper base, the rotating column passes through the lower base and is rotatably connected to the fixed seat, corresponding reset grooves are provided at the top of the upper base and the bottom of the lower base, the reset grooves are annular, and a plurality of reset springs are distributed in a ring shape on the reset grooves, a plurality of the reset springs are vertically arranged, one end of a plurality of the reset springs is fixedly connected to the upper base, and the other end is fixedly connected to the lower base, a communicating fixed groove is provided on the upper base and the lower base, the fixed groove is located at the center of the reset spring, the diameter of the fixed groove is smaller than the inner diameter of the reset spring, and the upper base and the lower base are rotated synchronously by inserting the pin into the fixed groove.

[0017] Beneficial effects of the present invention:

[0018] The present invention can drive the rotating rod to rotate through the meshing transmission of the conical gear one and the conical gear two, and an arc-shaped rack meshing with the gear two is provided on the outer edge of the bottom of the rotating seat. The rotating seat is circular, and the curvature of the arc-shaped rack is consistent with the curvature of the rotating seat. When the user rotates the knob, the meshing transmission of the conical gear one and the conical gear two drives the rotating rod to rotate, thereby driving the gear two to interact with the arc-shaped rack at the bottom of the rotating seat, so that the rotating seat rotates smoothly and changes the angle of the display; by rotating the moving knob, the gear shaft is driven to rotate, and since the gear shaft is fixedly connected with the gear one, and the gear one is meshed with the fixed rack on the bottom plate, when the gear shaft rotates, the gear one drives the entire moving base to slide back and forth along the fixed rack on the bottom plate, so as to adjust the position of the moving base. By providing the forward and backward movement adjustment function, it is convenient for the user to easily reach out and adjust the screen to a suitable position and distance when sitting, thereby maintaining a healthy working posture and reducing potential pressure on the eyes and neck.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : The overall structure diagram of the present invention.

[0021] Figure 2 : Exploded cross-sectional view of a table of the present invention.

[0022] Figure 3 : A cross-sectional view of a mobile base of the present invention.

[0023] Figure 4 : A side sectional view of the overall structure of the present invention.

[0024] Figure 5 : A front sectional view of the overall structure of the present invention.

[0025] Figure 6 : Figure 5Enlarged view of the structure of part A.

[0026] Figure 7 : Roller frame structure diagram of the present invention.

[0027] Figure 8 : Exploded view of the fixed seat and the rotating seat of the present invention.

[0028] Fig. 9 : Schematic diagram of the position locking of the display mounting base of the present invention.

[0029] Figure numerals: 1, table; 2, mobile base; 3, fixed base; 4, rotating base; 5, display lifting base; 6, control component; 11, through hole 1; 12, bottom plate; 13, groove; 14, dust cover; 15, opening; 16, plug block; 17, plug hole; 18, slot; 19, fixed rack; 21, support column; 22, roller frame; 221, roller shaft; 23, roller; 24, buffer hole; 25, buffer frame; 26, fixed Positioning column; 27, buffer spring; 28, positioning groove; 29, moving hole; 31, avoidance position 1; 32, fixing plate; 33, rotating bearing 2; 34, rotating rod; 35, conical gear 1; 36, gear 2; 37, conical gear 2; 38, rotating knob; 41, annular groove; 42, ball bearing; 43, arc hole; 44, screw; 45, nut; 46, arc rack; 47, upper base; 48, lower base; 50, connecting column; 51, Column; 52, lifting hole; 54, display mounting seat; 55, strap; 56, sling; 57, transition piece; 58, counterweight; 59, bump; 581, magnetic suspension base; 582, placement hole; 583, magnetic control device; 584, magnetic control knob; 585, display screen; 586, power switch; 61, rotating bearing 1; 62, outer bearing; 63, inner bearing; 631, gear shaft; 632, moving knob; 633, gear one; 511, slot; 512, limit card plate; 513, slide slot; 514, extension portion; 515, avoidance position two; 541, connecting plate; 542, connecting seat; 543, through hole two; 544, mounting piece; 545, movable hole; 546, movable rod; 547, block; 548, pull ring; 471, rotating column; 472, reset slot; 473, reset tension spring; 474, fixing slot; 475, latch. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0031] Please refer to Figure 1-9 ;

[0032] A display stand for an office table, comprising a table 1, wherein the table 1 is provided with a through hole 11, the through hole 11 runs through the entire thickness of the desktop, a bottom plate 12 is fixedly installed in the through hole 11, the bottom plate 12 is located at the bottom of the through hole 11, the size of the through hole 11 is slightly larger than the size of the bottom plate 12, ensuring that the bottom plate 12 is installed smoothly without obvious gaps, and keeping the desktop beautiful, a movable base 2 is placed on the bottom plate 12, the length of the through hole 11 is larger than the length of the movable base 2, so that the movable base 2 can move on the bottom plate 12, the two side walls of the movable base 2 are in contact with the two side walls of the through hole 11, limiting its lateral displacement or rotation, ensuring that the moving direction is limited to front and back, grooves 13 are symmetrically provided on the two side walls of the through hole 11, two dust covers 14 are placed between the two grooves 13, the two dust covers 14 are respectively placed at the two ends of the groove 13, the dust covers 14 extend to the side walls of the two grooves 13, and one of the two dust covers 14 The ends are respectively fixed on the two ends of the corresponding grooves 13, and the other ends are respectively fixedly connected to the outer walls of the two ends of the mobile base 2. Preferably, the dust cover 14 can be fixedly connected to the mobile base 2 by using glue with high adhesion. The dust cover 14 adopts a corrugated cover, and the corrugated cover is made of memory material. When the position of the mobile base 2 is adjusted, the dust cover 14 can be folded or opened accordingly, which can not only keep the desktop beautiful, but also prevent dust from entering, and provide a comfortable working environment for users. Four supporting columns 21 are symmetrically arranged in the mobile base 2, and a fixed seat 3 is fixedly installed on the four supporting columns 21. A rotating seat 4 is rotatably connected to the fixed seat 3. A display lifting seat 5 for installing a display is provided on the rotating seat 4. The user can flexibly adjust the angle of the display by rotating the rotating seat 4 to change the viewing angle. A control component 6 for controlling the movement of the mobile base 2 and the rotation of the rotating seat 4 is provided between the fixed seat 3 and the mobile base 2;

[0033] The control component 6 includes a rotating bearing 61, which is composed of an inner bearing 63 and an outer bearing 62 that move independently inside and outside. Preferably, the rotating bearing 61 adopts a ball bearing 42 to reduce friction and improve rotation accuracy. A rotating knob 38 with a hollow center is fixedly connected to one side of the outer bearing 62, and a conical tooth 35 is fixedly connected to the other side of the outer bearing 62. The fixed seat 3 is located on one side of the rotating bearing 61 and is provided with an avoidance position 31. The fixed seat 3 is located on the avoidance position 31 and is provided with two fixed plates 32. The two fixed plates 32 are arranged in a horizontal and vertical manner. The two fixed plates 32 are fixedly installed with a rotating bearing 2 33, and the centers of the two rotating bearings 2 33 are matched with a rotating rod 34. , the shaft can rotate, one end of the rotating rod 34 is fixedly connected to the gear 2 36, and the other end is fixedly connected to the conical gear 2 37 meshing with the conical gear 1 35, so that when the user rotates the knob 38, the meshing transmission of the conical gear 1 35 and the conical gear 2 37 can drive the rotating rod 34 to rotate, and an arc-shaped rack 46 meshing with the gear 2 36 is provided on the outer edge of the bottom of the rotating seat 4. The rotating seat 4 is circular, and the curvature of the arc-shaped rack 46 is consistent with the curvature of the rotating seat 4. When the user turns the rotating knob 38, the meshing transmission of the conical gear 1 35 and the conical gear 2 37 drives the rotating rod 34 to rotate, thereby driving the gear 2 36 to interact with the arc-shaped rack 46 at the bottom of the rotating seat 4, so that the rotating seat 4 rotates smoothly and changes the angle of the display;

[0034] A gear shaft 631 is fixedly connected to the inner bearing 63, one end of the gear shaft 631 extends to the central hollow of the rotating knob 38, and is fixedly connected to a moving knob 632, which extends to the outside of the rotating knob 38 for easy rotation, and the moving knob 632 is separated from the rotating knob 38 and rotates independently without affecting each other, the other end of the gear shaft 631 is rotatably connected to the side wall of the moving base 2, the gear shaft 631 is located below the center of the fixed base 3 and is fixedly connected to a gear 1 633, a moving hole 29 is provided at the bottom of the moving base 2, a fixed rack 19 capable of passing through the moving hole 29 is provided on the bottom plate 12, and the fixed rack 19 is meshed with the gear 1 633, The fixed rack 19 and gear 1 633 are both parallel to the long side of the base plate 12. By turning the movable knob 632, the gear shaft 631 is driven to rotate. Since the gear shaft 631 is fixedly connected to the gear 1 633, the gear 1 633 is engaged with the fixed rack 19 on the base plate 12. Therefore, when the gear shaft 631 rotates, the gear 1 633 drives the entire mobile base 2 to slide back and forth along the fixed rack 19 on the base plate 12, so as to adjust the position of the mobile base 2. By providing the forward and backward movement adjustment function, the user can easily reach out and adjust the screen to a suitable position and distance while sitting, thereby maintaining a healthy working posture and reducing potential pressure on the eyes and neck.

[0035] In this embodiment, the bottom of the rotating seat 4 and the top of the fixed seat 3 are provided with corresponding annular grooves 41, and a plurality of balls 42 are placed in the annular grooves 41. The balls 42 convert the original sliding friction into rolling friction, thereby reducing the friction coefficient between the two, and also effectively reducing the wear caused by rotation, thereby extending the service life of the fixed seat 3 and the rotating seat 4.

[0036] In order to prevent the display lifting frame from unexpectedly rotating when it is not needed, the front and rear ends of the rotating seat 4 and the fixed seat 3 are both provided with connected arc holes 43, and screws 44 are passed through the arc holes 43. The screws 44 can limit the maximum rotation angle of the rotating seat 4. The other end of the screw 44 is threadedly connected with a nut 45, and the nut 45 is located below the lower end surface of the fixed seat 3. The fixed seat 3 and the rotating seat 4 are locked together by the screw 44 and the nut 45. Preferably, the screw 44 is designed to be smooth in the middle section and threaded at the end. When the nut 45 is rotated When tightened, it will not directly press the fixed base 3 and the rotating base 4, but ensure that the rotating base 4 can rotate flexibly without being locked through a slight pre-tightening force, while preventing the ball 42 from escaping from the annular groove 41, and can place the rotating base 4 to be easily rotated. The screw 44 is covered with an anti-skid pad, and the two sides of the anti-skid pad are in close contact with the two inner walls of the arc hole 43, providing additional friction, further preventing the rotating base 4 from easily changing its angle due to a slight external force. When the angle of the display needs to be adjusted, the user only needs to turn the rotating knob 38.

[0037] In this embodiment, the display bracket includes a column 51, a lifting hole 52 is vertically provided on the column 51, a connecting column 50 is passed through the lifting hole 52, a display mounting seat 54 is provided at one end of the connecting column 50, and a strap member 55 is provided at the other end. The size of the strap member 55 is larger than the lifting hole 52 to prevent the connecting column 50 from being separated from the lifting hole 52. The diameter of the connecting column 50 is the same as the short axis length of the lifting hole 52, and the height of the connecting column 50 is consistent with the depth of the lifting hole 52, so that the display mounting seat 54 and the strap member 55 are respectively fitted with the outer wall and the inner wall of the column 51 to prevent the display mounting seat 54 from shaking during use. The other end of the strap member 55 is fixedly connected to a sling 56, and the sling 56 is wound around a transition piece 57. The other end of the sling 56 is fixedly connected to a counterweight 58. The sling 56 is preferably a flat belt, and the transition piece 57 is preferably a roller. The wide surface design of the flat belt can better fit the roller, reduce the shaking of the sling 56 during movement, and ensure the stability of the counterweight 58 during the lifting process.

[0038] The weight of the counterweight 58 is less than the total weight of the display plus the display mounting seat 54 and the strap 55. When the display mounting seat 54 is not locked, the counterweight 58 will drop and drive the display mounting seat 54 to rise. The counterweight 58 is a permanent magnet. A magnetic suspension base 581 is provided directly below the counterweight 58. Preferably, the magnetic suspension base 581 has an electromagnetic coil built in it, and the counterweight 58 is suspended by magnetic force, thereby realizing the lifting and lowering of the display mounting seat 54. A placement hole 582 is provided on the front side of the column 51. A magnetic control device 583 electrically connected to the magnetic suspension base 581 is fixedly installed in the placement hole 582. The magnetic control device 583 includes a magnetic control knob 584, a display screen 585 and a power switch 586. The magnetic control knob 584 is used to adjust the magnetic output of the magnetic suspension base 581, and the display screen 585 is used to display magnetic parameters.

[0039] The display mounting base 54 includes a connecting plate 541 and a connecting base 542 mounted on the connecting plate 541. For the specific structure of the connecting base 542, reference may be made to the prior art document "CN213900506U, a sliding mechanism for automatically closing and popping up". The connecting plate 541 is symmetrically provided with through holes 543 on both sides of the connecting base 542. A plurality of card slots 511 corresponding to the through holes 543 are longitudinally distributed on the front side of the column 51. The connecting plate 541 is located above the through holes 543 and is provided with mounting members 544. The mounting members 544 are provided with movable holes 545 corresponding to the through holes 543. The movable holes 546 are provided on the connecting plates 541. A movable rod 546 is movably connected inside 45, and a block 547 capable of being inserted into the slot 511 is fixedly connected to the bottom of the movable rod 546. The display mounting seat 54 can be fixed at a height by inserting the block 547 into the corresponding slot 511. A pull ring 548 is fixedly connected to the top of the movable rod 546. The pull ring 548 is located above the mounting member 544. The user can pull the pull ring 548 to pull the block 547 out of the slot 511, unlock the display mounting seat 54, and adjust its height. After the adjustment is completed, the block 547 is inserted into the corresponding slot 511 to lock the display mounting seat 54.

[0040] When in use, if the display needs to be raised, pull the pull ring 548 to pull the card block 547 out of the card slot 511 to unlock the display mounting seat 54. Since the weight of the counterweight block 58 is slightly less than the total weight of the display plus the display mounting seat 54 and the strap 55, the counterweight block 58 will slowly drop, driving the display mounting seat 54 to rise naturally. When the display rises to the required height, insert the card block 547 into the corresponding card slot 511 to lock the display mounting seat 54. If the display mounting seat 54 needs to be lowered, pull the pull ring 548 first to pull the card block 547 is pulled out from the card slot 511 to unlock the display mounting base 54, and then the magnetic control knob 584 is turned to increase the magnetic output of the magnetic levitation base 581 so that the counterweight 58 can float and rise. When the display drops to the required height, the magnetic control knob 584 is turned again to observe the magnetic parameters of the display screen 585 to ensure that the counterweight 58 remains balanced. Then the card block 547 is inserted into the corresponding card slot 511 to lock the display mounting base 54. After completing the height adjustment, the power switch 586 of the magnetic control device 583 is turned off to save energy.

[0041] In this embodiment, limiting clamps 512 are installed on both sides of the counterweight 58 inside the column 51, and sliding grooves 513 are provided on the inner walls of the limiting clamps 512. Protrusions 59 that can slide along the sliding grooves 513 are provided on both sides of the counterweight 58, ensuring the smooth movement of the counterweight 58 in the vertical direction and limiting its lateral shaking to avoid affecting the smoothness of the display height adjustment due to shaking. The bottom of the sliding groove 513 is gradually narrowed. When the sling 56 is disconnected, the counterweight 58 falls. The gradually narrowing sliding groove 513 can clamp the counterweight 58 to stop it from sliding down. If there is no narrowing design, the counterweight 58 may hit the end of the sliding groove 513 during the falling process, which may crush the limiting clamp 512. Since the bottom end of the sliding groove 513 is higher than the top end of the magnetic levitation base 581, the counterweight 58 will not hit the magnetic levitation base 581, thereby ensuring the safety of the magnetic levitation base 581.

[0042] In this embodiment, the top of the limiting card plate 512 is provided with an extension portion 514 extending toward the center, and a second avoidance position 515 for the sling 56 to move is provided between the extension portions 514, which is coordinated with the height of the lifting hole 52 to limit the rising height of the counterweight block 58 to prevent the counterweight block 58 from being lifted or lowered too high and detaching from the limiting card plate 512. A second avoidance position 515 for the sling 56 to move is provided between the two extension portions 514. By setting the second avoidance position 515, it is ensured that the sling 56 will not interfere with the limiting card plate 512 during movement, thereby ensuring smooth movement of the sling 56.

[0043] In this embodiment, the table 1 is provided with openings 15 for inserting plugs 16 at the ends of the two grooves 13. The plugs 16 are in a convex shape. The dust cover 14 is provided with a socket 17 at one end of the opening 15. The bottom of the groove 13 is provided with a slot 18 connected to the socket 17. The protruding end of the plug 16 passes through the socket 17 and is inserted into the slot 18 to fix the dust cover 14. When the dust cover 14 is damaged, the plug 16 can be pulled out to remove the dust cover 14 from the opening 15, and then a new one can be put on, and then the plug 16 can be inserted to fix one end of the dust cover 14, and the other end of the dust cover 14 can be fixed to the movable base 2 using glue or other adhesive items.

[0044] In this embodiment, a roller frame 22 is symmetrically provided at the bottom of the mobile base 2, and a plurality of buffer holes 24 are provided on both sides of the roller frame 22. Preferably, the buffer holes 24 are elliptical holes, and a plurality of buffer holes 24 are movably connected with roller shafts 221, and a plurality of roller shafts 221 are rotatably connected with rollers 23. The plurality of rollers 23 are in contact with the upper end surface of the bottom plate 12, thereby reducing the friction between the mobile base 2 and the bottom plate 12 and improving the moving efficiency. The roller frame 2 is provided with a plurality of buffer holes 24 on both sides of each roller 23 and the roller frame 2. 2 are rotatably connected with a buffer frame 25, and a plurality of buffer frames 25 are provided with a plurality of positioning columns 26 passing through the bottom of the mobile base 2. A plurality of positioning columns 26 are covered with buffer springs 27, and one end of the buffer spring 27 abuts against the buffer frame 25, and the other end abuts against the mobile base 2. The top of the bottom plate 12 is provided with four positioning grooves 28 corresponding to the rollers 23 on both sides, two of which are located at the front end of the bottom plate 12, and the other two positioning grooves 28 are located at the rear end of the bottom plate 12. Preferably, the rollers 23 move on the upper surface of the bottom plate 12. When the movable base 2 moves, the buffer spring 27 is in a compressed state, and the positioning groove 28 is adapted to the size of the roller 23, so that the roller 23 can be embedded in the positioning groove 28. When the movable base 2 moves, once the roller 23 reaches the corresponding positioning groove 28 position, due to the loss of support from below, the buffer spring 27 will return to its original state and push the buffer frame 25 downward, so that the roller 23 descends along the buffer hole 24 and is embedded in the positioning groove 28, which is used to limit the further displacement of the movable base 2 and prevent it from accidentally sliding when it is not needed. By setting a plurality of groups of such roller 23 structures, the graded limiting function of the movable base 2 is realized. Preferably, each roller 23 frame of the present invention is provided with a total of five rollers 23. When the fifth roller 23 enters the positioning groove 28, it indicates that the movable base 2 has reached the farthest position. If the movable base 2 needs to be moved in the reverse direction, a larger force is applied to reversely rotate the moving knob 632. When the movable base 2 moves in the reverse direction, the roller 23 will rise from the positioning groove 28 to return to the initial height and compress the buffer spring 27 again.

[0045] In this embodiment, the rotating seat 4 includes an upper base 47 and a lower base 48. A rotating column 471 extending vertically downward is provided at the center of the upper base 47. The rotating column 471 passes through the lower base 48 and is rotatably connected to the fixed base 3, so that the upper base 47 can only rotate around the axis of the rotating column 471 without displacement. The top of the upper base 47 and the bottom of the lower base 48 are provided with corresponding reset grooves 472. The reset groove 472 is annular. A plurality of reset tension springs 473 are distributed in an annular shape on the reset groove 472. The plurality of reset tension springs 473 are vertically arranged. The plurality of reset tension springs 47 One end of 3 is fixedly connected to the upper base 47, and the other end is fixedly connected to the lower base 48. When the display is deflected by an external collision, the upper base 47 will be driven to rotate together, thereby stretching the reset spring 473. Once the external force disappears, the stretched reset spring 473 will return to its original state, pulling the upper base 47 back to the initial position, thereby realizing the automatic reset function of the display. When the display angle needs to be adjusted, the rotary knob 38 is turned, the lower base 48 rotates, and then the reset spring pulls the upper base 47 to rotate together, thereby completing the angle adjustment of the display;

[0046] In order to extend the service life of the reset spring 473 and reduce fatigue damage caused by frequent pulling, a connected fixing groove 474 is provided on the upper base 47 and the lower base 48. The fixing groove 474 is located at the center of the reset spring 473. The diameter of the fixing groove 474 is smaller than the inner diameter of the reset spring 473. The latch 475 is inserted into the fixing groove 474. Specifically, the latch 475 passes through the fixing groove 474 of the upper base 47 and the corresponding center of the reset spring 473 in sequence, and finally abuts against the bottom of the fixing groove 474 of the lower base 48, so that the upper base 47 and the lower base 48 are locked and move synchronously. When the rotating knob 38 is rotated, the lower base 48 drives the upper base 47 to rotate synchronously through the latch 475, and the force of the rotational movement is borne by the latch 475. There is no need to pull the upper base 47 through the reset spring 473. The latch 475 can be pulled out when no adjustment is needed. Preferably, the fixing groove 474 is arranged in front of the display bracket to facilitate the user to insert the latch 475 to adjust the display angle of the display.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

1. A display stand for an office desk, comprising a desk (1), characterized in that: The table (1) is provided with a through hole (11), a bottom plate (12) is fixedly installed in the through hole (11), a movable base (2) is placed on the bottom plate (12), the length of the through hole (11) is greater than the length of the movable base (2), grooves (13) are symmetrically provided on the two side walls of the through hole (11), two dust covers (14) are placed between the two grooves (13), the two dust covers (14) are extended to the side walls of the two grooves (13), one end of the two dust covers (14) is respectively fixed At the two ends of the corresponding groove (13), the other ends are respectively fixedly connected to the outer walls of the two ends of the mobile base (2); four support columns (21) are symmetrically arranged inside the mobile base (2); a fixed seat (3) is fixedly installed on the four support columns (21); a rotating seat (4) is rotatably connected to the fixed seat (3); a display lifting seat (5) is arranged on the rotating seat (4); and a control component (6) for controlling the movement of the mobile base (2) and the rotation of the rotating seat (4) is arranged between the fixed seat (3) and the mobile base (2); The control assembly (6) comprises a rotary bearing (61), the rotary bearing (61) comprising an inner bearing (63) and an outer bearing (62) which move independently inside and outside, one side of the outer bearing (62) being fixedly connected with a rotary knob (38) with a hollow center, the other side of the outer bearing (62) being fixedly connected with a conical tooth (35), the fixed seat (3) being located on one side of the rotary bearing (61) and being provided with a clearance position (31), the fixed seat (3) being located on the clearance position (31) and being provided with two fixed plates (32), the two fixed plates (32) being fixedly installed with a rotary bearing (33), the centers of the two rotary bearings (33) being matched with a rotating rod (34), one end of the rotating rod (34) being fixedly connected with a gear (36), and the other end being fixed with a gear (36). The rotating seat (4) is fixedly connected with a conical tooth 2 (37) meshing with the conical tooth 1 (35); an arc-shaped rack (46) meshing with the gear 2 (36) is provided on the outer edge of the bottom of the rotating seat (4); a gear shaft (631) is fixedly connected to the inner bearing (63); one end of the gear shaft (631) extends to the central hollow of the rotating knob (38) and is fixedly connected to the moving knob (632); the other end is rotatably connected to the side wall of the moving base (2); the gear shaft (631) is located below the center of the fixed seat (3) and is fixedly connected with the gear 1 (633); a moving hole (29) is provided at the bottom of the moving base (2); a fixed rack (19) capable of passing through the moving hole (29) is provided on the bottom plate (12); the fixed rack (19) meshes with the gear 1 (633).

2. A display stand for an office table according to claim 1, characterized in that: The bottom of the rotating seat (4) and the top of the fixed seat (3) are provided with corresponding annular grooves (41), a plurality of balls (42) are placed in the annular grooves (41), the front and rear ends of the rotating seat (4) and the fixed seat (3) are both provided with communicating arc holes (43), a screw rod (44) is passed through the arc hole (43), the other end of the screw rod (44) is threadedly connected with a nut (45), and the nut (45) is located below the fixed seat (3).

3. A display stand for an office table according to claim 1, characterized in that: The display lifting seat (5) comprises a column (51), a lifting hole (52) is vertically provided on the column (51), a connecting column (50) is inserted into the lifting hole (52), one end of the connecting column (50) is provided with a display mounting seat (54), and the other end is provided with a strap piece (55), a sling (56) is fixedly connected to the sling piece (55), the sling (56) is wound around a transition piece (57), and the other end of the sling (56) is fixedly connected to a counterweight block (58).

4. A display stand for an office table according to claim 3, characterized in that: The weight of the counterweight (58) is less than the total weight of the display plus the display mounting seat (54) and the strap (55). The counterweight (58) is a permanent magnet. A magnetic suspension base (581) is provided directly below the counterweight (58). A placement hole (582) is provided on the front side of the column (51). A magnetic force control device (583) electrically connected to the magnetic suspension base (581) is fixedly installed in the placement hole (582). The magnetic force control device (583) comprises a magnetic force control knob (584), a display screen (585) and a power switch (586). The magnetic force control knob (584) is used to adjust the magnetic force output of the magnetic suspension base (581), and the display screen (585) is used to display magnetic force parameters.

5. A display stand for an office table according to claim 4, characterized in that: The display mounting seat (54) comprises a connecting plate (541) and a connecting seat (542) mounted on the connecting plate (541); the connecting plate (541) is symmetrically provided with second through holes (543) on both sides of the connecting seat (542); a plurality of card slots (511) corresponding to the second through holes (543) are longitudinally distributed on the front side of the column (51); a mounting member (544) is mounted on the connecting plate (541) above the second through hole (543); a movable hole (545) corresponding to the second through hole (543) is provided on the mounting member (544); a movable rod (546) is movably connected in the movable hole (545); a card block (547) capable of being inserted into the card slot (511) is fixedly connected to the bottom of the movable rod (546); a pull ring (548) is provided on the top of the movable rod (546); and the pull ring (548) is located above the mounting member (544).

6. A display stand for an office table according to claim 5, characterized in that: Limiting clamps (512) are installed on both sides of the counterweight (58) inside the column (51), and sliding grooves (513) are provided on the inner walls of the limiting clamps (512). Both sides of the counterweight (58) are provided with protrusions (59) that can slide along the sliding grooves (513), and the bottom of the sliding grooves (513) gradually narrows.

7. A display stand for an office table according to claim 6, characterized in that: The top of the position-limiting clamping plate (512) is provided with an extension portion (514) extending toward the center, and a second avoidance position (515) for the sling (56) to move is provided between the extension portions (514).

8. The display stand for an office table according to claim 1, characterized in that: The table (1) is provided with openings (15) for inserting an insert block (16) at the ends of the two grooves (13); the insert block (16) is in a convex shape; the dust cover (14) is provided with a plug hole (17) at one end of the opening (15); the bottom of the groove (13) is provided with a slot (18) connected to the plug hole (17); a protruding end of the insert block (16) passes through the plug hole (17) and is inserted into the slot (18).

9. The display stand for an office table according to claim 1, characterized in that: The bottom of the mobile base (2) is symmetrically provided with a roller frame (22), and a plurality of buffer holes (24) are provided on both sides of the roller frame (22), and a plurality of the buffer holes (24) are movably connected with a roller shaft (221), and a plurality of the roller shafts (221) are rotatably connected with rollers (23), and a plurality of the rollers (23) are in contact with the upper end surface of the bottom plate (12), and a buffer frame (25) is rotatably connected between the two sides of each roller (23) and the roller frame (22), and a plurality of the buffer frames (2 5) are provided with a plurality of positioning columns (26) passing through the bottom of the movable base (2), and a plurality of said positioning columns (26) are provided with buffer springs (27) on their outer sleeves, and one end of said buffer spring (27) abuts against the buffer frame (25), and the other end abuts against the bottom of the movable base (2), and the top of said bottom plate (12) is provided with four positioning grooves (28) corresponding to the rollers (23) on both sides, wherein two positioning grooves (28) are located at the front end of the bottom plate (12), and the other two positioning grooves (28) are located at the rear end of the bottom plate (12).

10. The display stand for an office table according to claim 1, characterized in that: The rotating seat (4) comprises an upper base (47) and a lower base (48), wherein a rotating column (471) extending vertically downward is provided at the center of the upper base (47), wherein the rotating column (471) passes through the lower base (48) and is rotatably connected to the fixed seat (3), wherein corresponding reset grooves (472) are provided at the top of the upper base (47) and the bottom of the lower base (48), wherein the reset groove (472) is annular, and a plurality of reset springs (473) are distributed in an annular manner on the reset groove (472), wherein the plurality of reset springs (473) are vertically arranged, wherein one end of the plurality of reset springs (473) is fixedly connected to the upper base (47), and the other end of the plurality of reset springs (473) is fixedly connected to the lower base (48).

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