WO2021213342A1 - 一种可自由调高度的显示器支架 - Google Patents

一种可自由调高度的显示器支架 Download PDF

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Publication number
WO2021213342A1
WO2021213342A1 PCT/CN2021/088201 CN2021088201W WO2021213342A1 WO 2021213342 A1 WO2021213342 A1 WO 2021213342A1 CN 2021088201 W CN2021088201 W CN 2021088201W WO 2021213342 A1 WO2021213342 A1 WO 2021213342A1
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WO
WIPO (PCT)
Prior art keywords
connecting arm
height
mechanical spring
display
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2021/088201
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English (en)
French (fr)
Inventor
尤小东
郑宇杰
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Individual
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Individual
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Publication date
Priority claimed from CN202020590439.5U external-priority patent/CN212226488U/zh
Priority claimed from CN202010599396.1A external-priority patent/CN111609277A/zh
Application filed by Individual filed Critical Individual
Priority to JP2022549981A priority Critical patent/JP7721546B2/ja
Priority to EP21791698.0A priority patent/EP4108973B1/en
Publication of WO2021213342A1 publication Critical patent/WO2021213342A1/zh
Priority to US17/866,546 priority patent/US20220356986A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/20—Undercarriages with or without wheels
    • F16M11/2092—Undercarriages with or without wheels comprising means allowing depth adjustment, i.e. forward-backward translation of the head relatively to the undercarriage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/04—Balancing means
    • F16M2200/044—Balancing means for balancing rotational movement of the undercarriage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M2200/00—Details of stands or supports
    • F16M2200/06—Arms
    • F16M2200/063—Parallelogram arms

Definitions

  • the present disclosure relates to the technical field of display brackets, and relates to a display bracket that can be adjusted in height.
  • the height-adjustable display stand mainly adopts a gas spring structure or a mechanical spring structure to achieve height adjustment.
  • the gas spring monitor bracket has the disadvantages of high cost, short life, oil leakage, safety hazard, and environmental protection (difficult to handle due to scrap), but the gas spring has a stable force value and a good experience in achieving free adjustment of height.
  • the gas spring display stand still plays a dominant role.
  • the mechanical spring display bracket has the advantages of low cost, long life, safety and environmental protection, but the free adjustment of the existing mechanical spring display depends too much on friction to achieve balance, and the experience is poor.
  • the main purpose of the present disclosure is to solve the above problems and provide a mechanical spring-type display stand that is convenient to install and can stop after adjusting the height.
  • a display stand with a height that can be adjusted freely.
  • a quadrilateral structure is formed between the connecting arm, the hinge point of the lower connecting arm and the base, the base, the hinge point of the upper connecting arm and the base, and the upper connecting arm;
  • the display stand further includes a mechanical spring, one end of the mechanical spring is hinged with the connecting head or the lower connecting arm, the other end of the mechanical spring is hinged with a threaded slider, and the threaded slider is sleeved On the threaded rod, the threaded rod is arranged in the base, so that when the end of the threaded rod is operated to drive the threaded rod to rotate, the threaded slider moves along the threaded rod, Adjust the position of the threaded slider on the threaded rod according to the weight of the display on the connector, so that when the connector is moved upward or downward, the connector stops relative to the base. Different heights.
  • a mechanical spring is used to realize a height-adjustable free stop, which is better than a gas spring stand.
  • the display bracket satisfies a first balance condition and a second balance condition
  • the first balance condition is: keeping the connector at any height within a preset height range, and driving the screw thread
  • the rod rotation drives the threaded slider to move to ensure that the gravitational torque M1 is equal to the elastic torque M2, so as to adapt to the display of any weight within the preset weight range
  • the second balance condition is: according to the first The balance condition is to maintain the position of the threaded slider in the threaded rod corresponding to the weight of the display, and when the height of the connector is arbitrarily changed within the preset height range, it is ensured that the gravity torque M1 is equal to the elastic torque M2, to realize that the connecting head stops at different heights relative to the base.
  • the threaded rod is set to be consistent with the movement trajectory of the threaded slider, and the movement trajectory of the threaded slider is points e 0 and within the range of the quadrilateral e 1 f 1 f 2 e 2
  • the line segment formed by the points f 0 , the range of the quadrilateral e 1 f 1 f 2 e 2 is that by shifting the line segment ef up and down 5mm in the direction perpendicular to the line segment ef, the line segments e 1 f 1 and e are obtained respectively 2 f 2 is formed
  • point e and point f are the intersections of circle C and straight line La and straight line Lb, respectively
  • circle C is the center of the circle with the connection point of the mechanical spring and the connecting head or the lower connecting arm as the center
  • the length L1 of the mechanical spring is a circle with a radius
  • the straight lines La and Lb are respectively the angle b between the mechanical spring and the upper connecting arm
  • the included angle between the threaded rod and the horizontal direction away from the connector is 0-80°.
  • the length L 1 of the mechanical spring is set to Lx, where L is the distance between the mechanical spring and the connector or the lower connecting arm
  • the connection point, the distance between the hinge point of the lower connecting arm and the base, x is -10 to 30 mm.
  • the mechanical spring and the upper part are obtained according to the maximum and minimum values of the preset weight range of the display The maximum value and the minimum value of the included angle b between the connecting arms or the lower connecting arms.
  • the elastic coefficient K of the mechanical spring is Kmin ⁇ Kmax, where Kmax-Kmin ⁇ 15, and Kmin and Kmax are obtained by the following formula:
  • G is the weight of the display
  • a1 and a2 are respectively the angle between the upper connecting arm or the lower connecting arm and the horizontal plane when the connecting head is at any two heights within the preset height range;
  • b1 and b2 are the angles between the mechanical spring corresponding to a1 and a2 and the upper connecting arm or the lower connecting arm;
  • L1 and L1' are the lengths of the mechanical spring corresponding to a1 and a2, respectively.
  • one end of the threaded rod is provided as an operating end, and the other end of the threaded rod is rotatably provided in the mounting seat, so that by applying force to the operating end of the threaded rod The threaded rod is driven to rotate.
  • the display stand includes an adjusting rod, one end of the adjusting rod is hinged with the connecting head or the lower connecting arm, and the other end of the adjusting rod is threadedly connected with one end of the mechanical spring ,
  • the mechanical spring is driven to expand and contract, so as to adjust the elastic force of the mechanical spring and to adapt the display of the preset weight range.
  • a display stand with a height that can be adjusted freely.
  • the connecting arm, the hinge point of the lower connecting arm and the base, the base, the hinge point of the upper connecting arm and the base, and the upper connecting arm form a parallelogram structure, so
  • the display stand further includes an elastic force balancing mechanism, one end of the elastic force balancing mechanism is hinged with the upper connecting arm, and the other end of the elastic force balancing mechanism is hinged with the connecting head.
  • the display adjusts the elastic force of the elastic force balancing mechanism, so that when the connector is moved upward or downward, the connector stops at a different height relative to the base.
  • the elastic force balancing mechanism includes an elastic member and an adjusting rod, one end of the adjusting rod is hinged with the upper connecting arm, and the other end of the adjusting rod is threadedly connected with one end of the elastic member , The other end of the elastic member is connected to the connecting head, and when the end of the adjusting rod is operated to drive the adjusting rod to rotate, the elastic member is driven to expand and contract, so that the elastic force of the elastic member is equal to The weight of the display on the connecting head matches.
  • the end of the upper connecting arm is provided with an operating hole, the end of the adjusting rod is installed in the operating hole, and the end of the adjusting rod is operated through the operating hole.
  • the upper connecting arm and the lower connecting arm are both hinged to the base and the connecting head through the connecting shaft and a shaft hole matching the connecting shaft.
  • Adopting the height-adjustable display stand of the present disclosure based on the setting position of the elastic force balancing mechanism relative to the parallelogram structure, it can stop freely when adjusting the height, and has fewer parts, simple structure, lower cost, and beautiful appearance.
  • FIG. 1 is an exploded schematic diagram of a display stand with freely adjustable height according to some embodiments of the disclosure.
  • FIG. 2 is a cross-sectional view of a first state of the height-adjustable display stand of some embodiments of the present disclosure.
  • FIG. 3 is a cross-sectional view of a second state of the height-adjustable display stand of some embodiments of the disclosure.
  • FIG. 4 is a first simplified diagram of a display stand with freely adjustable height according to some embodiments of the present disclosure.
  • FIG. 5 is a second simplified diagram of a display stand with freely adjustable height according to some embodiments of the disclosure.
  • FIG. 6 is another structural diagram of a display stand with freely adjustable height according to some embodiments of the disclosure.
  • FIG. 7 is a schematic diagram of a third structure of a display stand with freely adjustable height in some embodiments of the present disclosure.
  • FIG. 8 is another exploded schematic diagram of the display stand with freely adjustable height according to some embodiments of the disclosure.
  • FIG. 9 is a cross-sectional view of the first position of the height-adjustable display stand of some embodiments of the present disclosure.
  • Fig. 10 is a simplified diagram of the height-adjustable display stand shown in Fig. 9.
  • FIG. 11a is a cross-sectional view of the second position of the height-adjustable display stand of some embodiments of the present disclosure.
  • Fig. 11b is a simplified diagram of the height-adjustable display stand shown in Fig. 11a.
  • Fig. 12a is a cross-sectional view of a third position of the height-adjustable display stand of some embodiments of the present disclosure.
  • Fig. 12b is a simplified diagram of the height-adjustable display stand shown in Fig. 12a.
  • an aspect of the embodiments of the present disclosure provides a height-adjustable display stand.
  • the display stand includes a base 1 and a connector 4 for mounting a display.
  • the display passes through a mounting plate. 5 is fixed on the connecting head 4.
  • the upper connecting arm 2 and the lower connecting arm 3 are arranged in parallel between the base 1 and the connecting head 4, as shown in Figure 4, the hinged connection between the upper connecting arm 2 and the connecting head 4 Point C, connecting head 4, hinge point D between lower connecting arm 3 and connecting head 4, lower connecting arm 3, hinge point B between lower connecting arm 3 and base 1, base 1, upper connecting arm 2 and base
  • a quadrilateral structure ABDC is formed between the hinge point A of the seat 1 and the upper connecting arm 2.
  • the display stand also includes a mechanical spring 6.
  • One end of the mechanical spring 6 is hinged with the connector 4, the other end of the mechanical spring 6 is hinged with the threaded slider 7, and the threaded slider 7 is sleeved on
  • the threaded rod 8 is arranged in the base 1.
  • One end of the threaded rod 8 is set as the operating end 9, and the other end of the threaded rod 8 is rotatably provided in the base 1, so that the operating end 9 of the threaded rod 8 can be driven to rotate.
  • the threaded slider 7 moves along the threaded rod 8.
  • the threaded slider 7 is at the highest end of the threaded rod 8. As shown in Figure 3, the threaded slider 7 is at the lowest end of the threaded rod 8. By operating the threaded rod 8, a threaded slider can be realized. 7 Move between the highest end and the lowest end of the threaded rod 8.
  • one end of the mechanical spring 6 is hinged with the connector 4. In other embodiments of the present disclosure, the end of the mechanical spring 6 may also be hinged with the lower connecting arm 3.
  • one end of the mechanical spring 6 is hinged on the connector 4, the other end is hinged with the threaded slider 7, the threaded slider 7 is threadedly connected with the threaded rod 8, the mechanical spring 6, the threaded slider 7, and
  • the threaded rods 8 are all installed on the base 1, as shown in Figs. 2 and 3, the mechanical spring 6 is in a stretched state.
  • the threaded rod 8 can be rotated with a hexagonal wrench, so that the threaded slider 7 moves up and down on the threaded rod 8, and the angle between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is changed, so as to realize free stop in terms of different load-bearing heights.
  • the sliding range of the threaded slider 7 and the installation position of the corresponding threaded rod 8 can be designed to realize the free stop of the required load-bearing range display.
  • the display stand provided in the present disclosure simultaneously meets the following balance conditions:
  • the first balance condition keep the connector 4 at any height in the preset height range, and drive the threaded rod 8 to rotate to drive the threaded slider 7 to move to ensure that the gravity torque M1 is equal to the elastic torque M2 to adapt to the preset height Any weight display in the weight range.
  • the second balance condition According to the first balance condition, keep the position of the threaded slider 7 in the threaded rod 8 corresponding to the weight of the display, and when the height of the connector 4 is arbitrarily changed within the preset height range, it is ensured that the gravity torque M1 is equal to The elastic torque M2 realizes that the connecting head 4 stops at a different height relative to the base 1.
  • the threaded rod 8 can be rotated with a hexagonal wrench, so that the threaded slider 7 moves up and down on the special screw, that is, the threaded slider 7 is on the upper edge of the threaded rod 8.
  • the longitudinal movement of the threaded rod 8 changes the position of the threaded slider 7 on the threaded rod 8, that is, the angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is changed.
  • L is the length of upper connecting arm 2 or lower connecting arm 3
  • G is gravity
  • F is elastic force
  • the elastic force F is also constant, so when b decreases, that is, when the threaded slider 7 slides down, G decreases, that is, the weight of the display decreases. Therefore, for the display in the preset weight range, the weight is reduced.
  • b is smaller, it indicates that the position of the threaded slider 7 on the threaded rod 8 is lower.
  • point E is the highest point of the threaded slider 7.
  • the angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is the largest; point F is the lowest point of the threaded slider 7, at this time.
  • the angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is the smallest.
  • the weight of the display is fixed and the position of the threaded slider 7 in the threaded rod 8 is fixed.
  • the angle a can be changed arbitrarily within the preset angle range.
  • the same gravity torque M1 is equal to the elastic torque M2.
  • the preset range of the angle a is (33°, -33°).
  • the corresponding setting position of the threaded rod 8/the movement trajectory of the threaded slider 7 can be calculated.
  • the preliminary movement trajectory of the threaded slider 7 can be determined, that is, with the connection point G of the mechanical spring 6 on the connector 4 as the center of the circle, the connector 4 is at When the maximum height is preset, the length L1 of the mechanical spring 6 is the radius of the circle C.
  • the angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is at the maximum and minimum values, they respectively form a point past G
  • the intersections of straight lines La and Lb, circle C and straight lines La and Lb form points e and f, respectively.
  • the line segment ef is translated upward and downward by 5 mm in the direction perpendicular to the line segment ef, to obtain the line segments e 1 f 1 and e 2 f 2 , forming the movement track range of the threaded slider 7, that is, a quadrilateral e 1 f 1 f 2 e 2 .
  • the distance between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 is obtained respectively.
  • the maximum and minimum values of the included angle b that is, the maximum value of the included angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3 according to the maximum value of the preset weight range of the display;
  • the minimum value of the preset weight range obtains the minimum value of the angle b between the mechanical spring 6 and the upper connecting arm 2 or the lower connecting arm 3.
  • the movement trajectory of the threaded slider 7 is a line segment e 0 f 0 formed by connecting two points e 0 and f 0 in the quadrilateral e 1 f 1 f 2 e 2 , and the threaded rod 8 is set to be connected to the threaded slider
  • the trajectories of 7 are consistent.
  • the angle ⁇ between the threaded rod 8 and the horizontal direction away from the connector 4 is 0-80°.
  • the elastic coefficient of the mechanical spring 6 can be determined.
  • G is the weight of the display
  • a1 and a2 are the angles between the upper connecting arm 2 or the lower connecting arm 3 and the horizontal plane when the connecting head 4 is at any two heights within the preset height range;
  • b1 and b2 are the angles between the mechanical spring 6 corresponding to a1 and a2 and the upper connecting arm 2 or the lower connecting arm 3, respectively;
  • L1, L1' are the lengths of the mechanical spring 6 corresponding to a1 and a2 respectively, which are obtained through actual measurement.
  • the elastic coefficient K of the mechanical spring 6 is selected from Kmin ⁇ Kmax, where Kmax-Kmin ⁇ 15; it can be verified whether any point on the line segment e 0 f 0 meets the requirements, if not, The position can be slightly adjusted and verified again. The actual obtained point may float up and down, and the final drawn straight line is used as the movement track of the threaded slider 7.
  • the length L1 of the mechanical spring 6 is set to Lx, where L is the connection point between the mechanical spring 6 and the connector 4 or the lower connecting arm 3, to the lower connecting arm 3 and the base 1
  • the distance between the hinge points, x is -10 ⁇ 30mm.
  • the change value is not large, especially in the latter half due to the large change in elastic force, the torque change of gravity can be ignored, which is regarded as a fixed value. Therefore, the length L1 of the mechanical spring 6 is set to L-x, and x is -10 to 30 mm.
  • the display stand includes an adjusting rod 10.
  • One end of the adjusting rod 10 is hinged with the connecting head 4 or the lower connecting arm 3, and the other end of the adjusting rod 10 is threadedly connected with one end of the mechanical spring 6.
  • the mechanical spring 6 is driven to expand and contract, so as to adjust the elastic force of the mechanical spring 6 and to adapt to the display of the preset weight range.
  • the mechanical spring 6 can be controlled to stretch by turning the adjusting rod 10 to change the elastic force; by adjusting the elastic force, the weight range of the display can be set more flexibly. For example, if the elasticity is 700N, the weight range of the display is 2-9kg. If the elasticity is adjusted to 800N, it can reach 3-11kg.
  • the height-adjustable display stand of the embodiment of the present disclosure is adopted, and the mechanical spring 6 is used to realize the height adjustment and free stop, which is better than the gas spring stand. Since the display bracket is provided with a parallelogram structure, the height of the display mounted on the connector 4 can be adjusted by adjusting the angle between the upper connecting arm 2 or the lower connecting arm 3 and the horizontal plane.
  • the display stand also includes a mechanical spring 6, a threaded slider 7, and a threaded rod 8, and can be rotated by operating the threaded rod 8, driving the threaded slider 7 to move along the threaded rod 8, because the mechanical spring 6 is hinged on the threaded rod 8.
  • the display fixed on the connector 4 can generate a clockwise gravitational torque to the connector 4, and the mechanical spring 6 can generate a counterclockwise elastic torque to the connector 4. Therefore, the weight of the display determines the elastic force to determine
  • the deformation of the mechanical spring 6 and the position of the threaded slider 7 on the threaded rod 8 make the gravity torque and the elastic torque the same, which can make the two torques received by the display cancel each other out, and the display is After adjusting the position, fix it at that position.
  • FIG. 7 to 12b another aspect of the embodiments of the present disclosure provides an embodiment of a display stand that can be adjusted in height.
  • the display stand includes a base 1 and a connector 4, and the base 1 can be mounted on a support arm.
  • a connecting board 25 is provided on the connecting head 4 for installing a display.
  • an upper connecting arm 2 and a lower connecting arm 3 are arranged between the base 1 and the connecting head 4 in parallel.
  • the ends of the upper connecting arm 2 and the lower connecting arm 3 are connected to the base 1, the connecting head 4 Phase hinged.
  • Fig. 10 is a simplified diagram of the display stand shown in Fig. 9, as shown in Fig. 10, wherein the ends of the upper connecting arm 2 and the lower connecting arm 3 are hinged with the base 1 and the connecting head 4, respectively, forming four hinge points a, b, c, d, a hinge point a is formed between the upper connecting arm 2 and the connecting head 4, a hinge point b is formed between the lower connecting arm 3 and the connecting head 4, and a hinged connection is formed between the lower connecting arm 3 and the base 1 Point d, a hinge point c is formed between the upper connecting arm 2 and the base 1, between the hinge point a and the hinge point b is the connector 4, between the hinge point c and the hinge point d is the base 1, and the upper connecting arm 2 ,
  • the lower connecting arm 3, the base 1, the connecting head 4 and the four hinge points a, b, c, d form a parallelogram structure, and the hinge points a, b, c, d are the four parallelogram structures vertex.
  • the upper connecting arm 2 and the lower connecting arm 3 are both hinged with the base 1 and the connecting head 4 through a connecting shaft and a shaft hole matching the connecting shaft.
  • the upper connecting arm 2 is hinged with the base 1 and the connecting head 4 through the shaft holes 30 and 16, and the matching connecting shafts 29, 13 and 11;
  • the lower connecting arm 3 is connected by The shafts 12, 14 and the corresponding shaft holes are hinged to the base 1 and the connecting head 4, respectively. Therefore, the connecting head 4 can rotate around the base 1 to realize the change of the position of the connecting head 4.
  • the display stand also includes an elastic force balancing mechanism.
  • the elastic force balancing mechanism includes an elastic member 27 and an adjusting rod 10. One end of the adjusting rod 10 is hinged with the upper connecting arm 2, and the other end of the adjusting rod 10 It is threadedly connected to one end of the elastic member 27, and the other end of the elastic member 27 is hinged to the connector 4. As shown in FIG. 10, the elastic member 27 and the connecting head 4 form a connecting point e.
  • the elastic force of the elastic force balancing mechanism can be adjusted according to the weight of the display to be installed, so that when the connector 4 is moved upward or downward, the connector 4 can stop relative to the base 1. Different heights.
  • the elastic member 27 is driven to expand and contract, so that the elastic force of the elastic member 27 matches the weight of the display on the connector 4.
  • the display fixed on the connector 4 can generate a clockwise gravitational torque on the connector 4, and the elastic force balancing mechanism can generate a counterclockwise elastic torque on the connector 4. Therefore, the elasticity is determined by the weight of the display.
  • the elastic force of the force balance mechanism makes the gravity torque and the elastic torque the same, so that the two torques received by the display can cancel each other, and the display is fixed at the position after being adjusted.
  • the elastic force of the elastic member 27 can be adjusted to adapt to heavy objects of different weights, such as displays.
  • the weight to be installed is 1kg
  • use a tool such as a wrench to turn the adjusting rod 10 so that the elastic member 27 is stretched to a certain amount of deformation, until the elastic force of the elastic member 27 is balanced with the weight.
  • the weight to be installed is 10 kg
  • the elastic member 27 needs to be stretched to a certain amount of deformation by rotating the adjusting rod 10, so that the elastic force of the elastic member 27 and the weight reach a new balance.
  • the end of the upper connecting arm 2 is provided with an operating hole 26, the end of the adjusting rod 10 is installed in the operating hole 26, and the end of the adjusting rod 10 is operated through the operating hole 26.
  • the elastic member 27 can be installed on the mounting shaft 15 of the connector 4 through the mounting ring 17 at its end.
  • the hinge point a and the hinge point b are located on the same vertical plane
  • the hinge point c and the hinge point d are located on the same plane
  • the connection point e formed by the elastic member 27 and the connector 4 is located at the hinge point a and the hinge point.
  • the point b is located outside the vertical plane
  • the connection point between the adjusting rod 10 and the upper connecting arm 2 is located outside the vertical plane where the hinge point c and the hinge point d are located.
  • connection point e formed by the elastic member 27 and the connecting head 4 is located obliquely below the hinge point b between the lower connecting arm 3 and the connecting head 4.
  • connection point e formed by the elastic member 27 and the connector 4 can be located at any other position of the connector 4, for example, at the hinge point b between the lower connecting arm 3 and the connector 4, or at the hinge point b The diagonally above and so on.
  • the length of the upper connecting arm 2 is L
  • the angle between the elastic force balancing mechanism and the upper connecting arm 2 is ⁇
  • the angle between the upper connecting arm 2 and the horizontal plane is ⁇
  • G gravity
  • F is elastic force
  • Adopting the freely adjustable height display stand of the embodiment of the present disclosure based on the setting position of the elastic force balance mechanism relative to the parallelogram structure, it can stop freely when adjusting the height, and has fewer parts, simple structure, low cost, and beautiful appearance. .

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  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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Abstract

一种可自由调高度的显示器支架，包括基座（1）和用于安装显示器的连接头（4），基座（1）和连接头（4）之间设置相平行的上连接臂（2）和下连接臂（3），显示器支架还包括机械弹簧（6），机械弹簧（6）的一端与连接头（4）或下连接臂（3）相铰接，机械弹簧（6）的另一端与螺纹滑块（7）相铰接，螺纹滑块（7）套接在螺纹杆（8）上，螺纹杆（8）设置在基座（1）内，使得在操作螺纹杆（8）的端部而驱动螺纹杆（8）旋转时，螺纹滑块（7）沿螺纹杆（8）移动，根据连接头（4）上的显示器的重量调整螺纹滑块（7）在螺纹杆（8）上的位置，使得在向上或向下移动连接头（4）时，连接头（4）停止在相对于基座（1）的不同高度。该可自由调高度的显示器支架，能实现高度调节自由停，较气弹簧支架更佳。

Description

一种可自由调高度的显示器支架
本申请要求于2020年06月28日提交中国专利局、申请号为202010599396.1、发明名称为“可自由调高度的显示器支架”，以及于2020年04月20日提交中国专利局、申请号为202020590439.5、实用新型名称为“可自由调高度的显示器支架”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本公开涉及显示器支架技术领域，涉及一种可自由调高度的显示器支架。
背景技术
相关技术中，高度自由可调的显示器支架主要采用气弹簧结构或者机械弹簧结构来实现在高度上的调整。气弹簧显示器支架具有成本高、寿命短、漏油隐患、安全隐患、以及不环保(因报废了难处理)等缺点，但气弹簧力值稳定，在实现高度上的自由调节方面体验较好。目前气弹簧显示器支架仍起主导地位。
机械弹簧的显示器支架具有成本低、寿命高、安全环保等优点，但现有机械弹簧显示器在高度上的自由调节方面过多依赖于摩擦力来达到平衡，体验较差。
因此，需要一种在高度自由调节方面的体验较气弹簧支架相当、甚至更佳的机械弹簧的显示器支架。
发明内容
本公开的主要目的就是针对以上存在问题，提供一种安装方便、可以实现调整高度后可停止的机械弹簧式显示器支架。
根据本公开实施例的一个方面，提供一种可自由调高度的显示器支架，所述显示器支架包括基座和用于安装显示器的连接头，所述基座和所述连接头之间设置有相平行的上连接臂和下连接臂，所述上连接臂与所述连接头之间的铰接点、所述连接头、所述下连接臂与所述连接头之间的铰接点、所述下连接臂、所述下连接臂与所述基座的铰接点、所述基座、所述上连接臂与基座的铰接点、以及所述上连接臂之间形成四边形结构；
所述显示器支架还包括机械弹簧，所述机械弹簧的一端与所述连接头或 所述下连接臂相铰接，所述机械弹簧的另一端与螺纹滑块相铰接，所述螺纹滑块套接在所述螺纹杆上，所述螺纹杆设置在所述基座内，使得在操作所述螺纹杆的端部而驱动所述螺纹杆旋转时，所述螺纹滑块沿所述螺纹杆移动，根据所述连接头上的显示器的重量调整所述螺纹滑块在所述螺纹杆上的位置，使得在向上或向下移动所述连接头时，所述连接头停止在相对于所述基座的不同高度。
根据本公开实施例的可自由调高度的显示器支架，使用机械弹簧，实现高度调节自由停，较气弹簧支架更佳。
在一些实施例中，所述显示器支架满足第一平衡条件和第二平衡条件，所述第一平衡条件为：保持所述连接头处于预设高度范围中的任一高度，通过驱动所述螺纹杆旋转带动所述螺纹滑块移动，保证重力转矩M1等于弹力转矩M2，以适配处于预设重量范围中的任一重量的显示器；所述第二平衡条件为：根据所述第一平衡条件，保持对应于显示器重量的所述螺纹滑块在所述螺纹杆中的位置，在所述预设高度范围内任意改变所述连接头的高度时，保证重力转矩M1等于弹力转矩M2，实现所述连接头停止在相对于所述基座的不同高度。
在一些实施例中，所述螺纹杆设置成与所述螺纹滑块的运动轨迹相一致，所述螺纹滑块的运动轨迹为位于四边形e 1f 1f 2e 2范围内的点e 0和点f 0连成的线段，所述四边形e 1f 1f 2e 2范围为通过将线段ef沿垂直于所述线段ef的方向向上及向下平移5mm，分别获得线段e 1f 1和e 2f 2而形成，点e和点f分别为圆C与直线La和直线Lb的交点，圆C为以所述机械弹簧与所述连接头或所述下连接臂的连接点为圆心、在所述连接头处于预设最大高度时所述机械弹簧的长度L1为半径的圆，直线La和Lb分别为所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角b在最大值和最小值时所述机械弹簧所在直线。
在一些实施例中，所述螺纹杆与远离所述连接头的水平方向之间的夹角为0～80°。
在一些实施例中，在所述连接头处于预设最大高度时，所述机械弹簧的长度L 1设置为L-x，其中，L为所述机械弹簧与所述连接头或所述下连接臂的连接点，到所述下连接臂与所述基座的铰接点之间的距离，x为-10～30mm。
在一些实施例中，在保持所述连接头处于预设高度范围内的任一水平高度时，根据所述显示器的预设重量范围的最大值和最小值，获得所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角b的最大值和最小值。
在一些实施例中，所述机械弹簧的弹性系数K为Kmin～Kmax，其中Kmax-Kmin≤15，并且Kmin、Kmax通过下式获得：
Figure PCTCN2021088201-appb-000001
式中，G为显示器重量；
a1，a2分别为所述连接头在预设高度范围内的任意两个高度时，所述上连接臂或所述下连接臂与水平面之间的角度；
b1，b2分别为a1、a2对应的所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角；
L1，L1'分别为a1、a2对应的所述机械弹簧的长度。
在一些实施例中，所述螺纹杆的一端设置为操作端，所述螺纹杆的另一端可旋转地设置在所述安装座内，使得通过对所述螺纹杆的所述操作端施力以驱动所述螺纹杆旋转。
在一些实施例中，所述显示器支架包括调节杆，所述调节杆的一端与所述连接头或所述下连接臂相铰接，所述调节杆的另一端与所述机械弹簧的一端螺纹连接，在操作所述调节杆的端部驱动所述调节杆转动时，带动所述机械弹簧伸缩，以调整所述机械弹簧的弹性力，以及适配预设重量范围的显示器。
根据本公开实施例的另一方面，提供一种可自由调高度的显示器支架，所述显示器支架包括基座和用于安装显示器的连接头，所述基座和所述连接头之间设置相平行的上连接臂和下连接臂，所述上连接臂与所述连接头之间的铰接点、所述连接头、所述下连接臂与所述连接头之间的铰接点、所述下连接臂、所述下连接臂与所述基座的铰接点、所述基座、所述上连接臂与所述基座的铰接点、以及所述上连接臂之间形成平行四边形结构，所述显示器支架还包括弹性力平衡机构，所述弹性力平衡机构的一端与所述上连接臂相 铰接，所述弹性力平衡机构的另一端与所述连接头相铰接，根据所述连接头上的显示器调整所述弹性力平衡机构的弹性力，使得在向上或向下移动所述连接头时，所述连接头停止在相对于所述基座的不同高度。
在一些实施例中，所述弹性力平衡机构包括弹性件和调节杆，所述调节杆的一端与所述上连接臂相铰接，所述调节杆的另一端与所述弹性件的一端螺纹连接，所述弹性件的另一端与所述连接头相连接，在操作所述调节杆的端部驱动所述调节杆转动时，带动所述弹性件伸缩，以使所述弹性件的弹性力与所述连接头上的显示器的重量相匹配。
在一些实施例中，所述上连接臂的端部设置操作孔，所述调节杆的端部安装于所述操作孔，通过所述操作孔操作所述调节杆的端部。
在一些实施例中，所述上连接臂和所述下连接臂，均通过所述连接轴和与所述连接轴相匹配的轴孔，与所述基座以及所述连接头相铰接。
采用了本公开的可自由调高度的显示器支架，基于弹性力平衡机构相对于平行四边形结构的设置位置，可以实现调高度时自由停止，并且零件少，结构简单，成本较低，外观美观。
附图说明
为了更清楚地说明本公开实施例和现有技术的技术方案，下面对实施例和现有技术中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的实施例。
图1为本公开一些实施例可自由调高度的显示器支架的分解示意图。
图2为本公开一些实施例可自由调高度的显示器支架的第一状态的剖视图。
图3为本公开一些实施例可自由调高度的显示器支架的第二状态的剖视图。
图4为本公开一些实施例可自由调高度的显示器支架的第一简化图。
图5为本公开一些实施例可自由调高度的显示器支架的第二简化图。
图6为本公开一些实施例可自由调高度的显示器支架的另一结构示意图。
图7为本公开一些实施例可自由调高度的显示器支架的第三种结构示意图。
图8为本公开一些实施例可自由调高度的显示器支架的另一分解示意图。
图9为本公开一些实施例可自由调高度的显示器支架的第一位置的剖视图。
图10为图9所示的可自由调高度的显示器支架的简化图。
图11a为本公开一些实施例可自由调高度的显示器支架的第二位置的剖视图。
图11b为图11a所示的可自由调高度的显示器支架的简化图。
图12a为本公开一些实施例可自由调高度的显示器支架的第三位置的剖视图。
图12b为图12a所示的可自由调高度的显示器支架的简化图。
具体实施方式
为使本公开的目的、技术方案、及优点更加清楚明白，以下参照附图并举实施例，对本公开进一步详细说明。显然，所描述的实施例仅仅是本公开一部分实施例，而不是全部的实施例。基于本公开中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本公开保护的范围。
如图1至图6所示，为本公开实施例的一个方面提供一种可自由调高度的显示器支架，其中，显示器支架包括基座1和用于安装显示器的连接头4，显示器通过安装板5固定于连接头4上，基座1和连接头4之间设置有相平行的上连接臂2和下连接臂3，如图4所示，上连接臂2与连接头4之间的铰接点C、连接头4、下连接臂3与连接头4之间的铰接点D、下连接臂3、下连接臂3与基座1的铰接点B、基座1、上连接臂2与基座1的铰接点A、以及上连接臂2之间形成四边形结构ABDC。
如图1至图3所示，显示器支架还包括机械弹簧6，机械弹簧6的一端与连接头4相铰接，机械弹簧6的另一端与螺纹滑块7相铰接，螺纹滑块7套接在螺纹杆8上，螺纹杆8设置在基座1内。螺纹杆8的一端设置为操作端9，螺纹杆8的另一端可旋转地设置在基座1内，使得能够通过对螺纹杆8的操 作端9施力以驱动螺纹杆8旋转。在操作螺纹杆8的端部从而驱动螺纹杆8旋转时，螺纹滑块7沿螺纹杆8移动。如图2所示，此时，螺纹滑块7处于螺纹杆8的最高端；如图3所示，螺纹滑块7处于螺纹杆8的最低端，通过操作螺纹杆8，可以实现螺纹滑块7在螺纹杆8的最高端和最低端之间移动。
根据连接头4上的显示器的重量调整螺纹滑块7在螺纹杆8上的位置，使得在向上或向下移动连接头4时，连接头4停止在相对于基座1的不同高度。
在本公开一些实施例中，机械弹簧6的一端与连接头4相铰接。在本公开另一些实施例中，机械弹簧6的端部也可以与下连接臂3相铰接。
本公开提供的实施例中，机械弹簧6的一端铰链在连接头4上，另一端与螺纹滑块7相铰链，螺纹滑块7与螺纹杆8螺纹连接，机械弹簧6、螺纹滑块7和螺纹杆8均安装于基座1上，如图2和图3所示，机械弹簧6处于拉伸状态。可以用六角扳手转动螺纹杆8，使得螺纹滑块7在螺纹杆8上下移动，改变机械弹簧6与上连接臂2或者下连接臂3的角度，从而实现不同承重的高度方面的自由停。其中，可以对螺纹滑块7的滑动范围以及相应的螺纹杆8的安装位置进行设计，实现所需承重范围显示器的自由停。
因此，为实现所需承重范围显示器的自由停，本公开提供的显示器支架同时满足以下平衡条件：
第一平衡条件：保持连接头4处于预设高度范围中的任一高度，通过驱动螺纹杆8旋转带动螺纹滑块7移动，保证重力转矩M1等于弹力转矩M2，以适配处于预设重量范围中的任一重量的显示器。
第二平衡条件：根据第一平衡条件，保持对应于显示器重量的螺纹滑块7在螺纹杆8中的位置，在预设高度范围内任意改变连接头4的高度时，保证重力转矩M1等于弹力转矩M2，实现连接头4停止在相对于基座1的不同高度。
对于第一平衡条件，如图4所示，保持连接头4处于预设高度范围中的任一高度，即，上连接臂2或下连接臂3与水平面之间的角度a不变，此时，为适配处于预设重量范围中的任一重量的显示器，可以用六角扳手转动螺纹杆8，使得螺纹滑块7在特制螺杆上下移动，即，使得螺纹滑块7在螺纹杆8 上沿螺纹杆8的长度方向移动，改变螺纹滑块7在螺纹杆8上的位置，即，改变机械弹簧6与上连接臂2或者下连接臂3之间的角度b。
重力转矩M1＝＝GL*cos(a)，弹力转矩M2＝F*L*sin(b)，重力转矩与弹力转矩相同。其中，L为上连接臂2或下连接臂3的长度，G为重力，F为弹力，则有
Figure PCTCN2021088201-appb-000002
因角度a一定，弹力F也一定，所以当b减小时，即，螺纹滑块7往下滑动，G就减小，也就是显示器重量减小。因此，对于预设重量范围中的显示器，重量减少。当b越小时，表明螺纹滑块7在螺纹杆8的位置越靠下。如图4所示，E点为螺纹滑块7的最高点，此时机械弹簧6与上连接臂2或下连接臂3的角度b最大；F点为螺纹滑块7的最低点，此时机械弹簧6与上连接臂2或下连接臂3的角度b最小。
对于第二平衡条件，显示器重量一定，螺纹滑块7在螺纹杆8中的位置一定，通过沿竖直方向调节显示器位置时，即角度a可在预设角度范围内任意变化，在此过程中，同样重力转矩M1等于弹力转矩M2。
假设，角度a的预设范围为(33°，-33°)，当角度a由33°向-33°变化时，由于机械弹簧6一直在拉伸，弹力F在不断变大，要使M1＝M2，则需使得机械弹簧6与上连接臂2或下连接臂3的角度b不断减小，以保证弹力提供的转矩M2基本不变。
因此，可以根据预设重量范围和预设高度范围/预设角度范围，计算获得相应的螺纹杆8的设置位置/螺纹滑块7的运动轨迹。
如图5所示，基于第一平衡条件和第二平衡条件，可确定螺纹滑块7的初步运动轨迹，即以机械弹簧6在连接头4上的连接点G为圆心，在连接头4处于预设最大高度时机械弹簧6的长度L1为半径画圆C，机械弹簧6与上连接臂2或者下连接臂3之间的夹角b在最大值和最小值时，分别形成过G点的直线La和Lb，圆C与直线La和Lb的交点分别形成点e和点f，将线段ef沿垂直于线段ef的方向分别向上平移和向下平移5mm，获得线段e 1f 1和e 2f 2， 形成螺纹滑块7的运动轨迹范围，即，四边形e 1f 1f 2e 2。
在保持连接头4处于预设高度范围中的任一水平高度时，根据显示器的预设重量范围的最大值和最小值，分别获得机械弹簧6与上连接臂2或者下连接臂3之间的夹角b的最大值和最小值，即，根据显示器的预设重量范围的最大值，获得机械弹簧6与上连接臂2或者下连接臂3之间的夹角b的最大值；根据显示器的预设重量范围的最小值，获得机械弹簧6与上连接臂2或者下连接臂3之间的夹角b的最小值。
也就是说，螺纹滑块7的运动轨迹为位于四边形e 1f 1f 2e 2中的两点点e 0和点f 0连成的线段e 0f 0，螺纹杆8设置成与螺纹滑块7的运动轨迹相一致。如图4所示，在本公开一些实施例中，螺纹杆8与远离连接头4的水平方向之间的夹角α为0～80°。
为进一步确定螺纹滑块7的运动轨迹，可以通过机械弹簧6的弹性系数确定。对于同一个弹簧，弹簧的刚度K(弹性系数)需为一定值或者大小差异不大。基于K＝弹簧力的增量ΔF/机械弹簧6的形变量ΔX为一定值或者大小差异不大，可以通过下式对螺纹滑块7的运动轨迹进行验证，并确定机械弹簧6的弹性系数。
Figure PCTCN2021088201-appb-000003
式中，G为显示器重量；
a1，a2分别为连接头4在预设高度范围内的任意两个高度时，上连接臂2或下连接臂3与水平面之间的角度；
b1，b2分别为a1、a2对应的机械弹簧6与上连接臂2或者下连接臂3之间的夹角；
L1，L1'分别为a1、a2对应的机械弹簧6的长度，通过实际测量得出。
通过上式，可获得数个K值，机械弹簧6的弹性系数K选自Kmin～Kmax，其中Kmax-Kmin≤15；可以验证线段e 0f 0上的任意一点是否符合要求，若不符合，可稍微调整位置，重新验证即可，实际得到的点可能会上下浮动，最终绘制的直线作为螺纹滑块7的运动轨迹。
在连接头4处于预设最大高度时，机械弹簧6的长度L1设置为L-x，其中，L为机械弹簧6与连接头4或下连接臂3的连接点，到下连接臂3与基座1的铰接点之间的距离，x为-10～30mm。为满足第二平衡条件，在预设角度/高度范围变化时，理论上，当角度a为最大时，机械弹簧6长度L1≥L可保证在往下转动时，角度b是一直不断减小的。但实际上，重力提供的转矩为M1＝GL*cos(a)，重力G不变，在起始阶段，角度a从33°到0°时，重力的转矩M1是在增大的，变化值并不大，特别是后大半段因弹力变化较大，重力的转矩变化可忽略，即视为定值。因此，机械弹簧6的长度L1设置为L-x，x为-10～30mm。
在一些实施例中，以显示器承重2～9kg为例，设定角度a的变化是由33°到-33°，算上显示器本身的重量，G按30～100N计算，假设弹力F＝700N，可得出最小值bmin＝2°左右，最大值bmax＝7.5°左右；L＝240mm，x＝5mm，L1＝235mm。
如图6所示，显示器支架包括调节杆10，调节杆10的一端与连接头4或下连接臂3相铰接，调节杆10的另一端与机械弹簧6的一端螺纹连接，在操作调节杆10的端部驱动调节杆10转动时，带动机械弹簧6伸缩，以调整机械弹簧6的弹性力，以及适配预设重量范围的显示器。
若仅设置机械弹簧6，在安装显示器支架时，已经将机械弹簧6的变形量确定好，则在使用中机械弹簧6拉力已经固定，较难调整；安装调节杆10后，机械弹簧6的拉力可以调整，具体地，可以通过转动调节杆10控制机械弹簧6拉伸，改变弹力大小；通过调整弹力大小，能够更加灵活的设定显示器的重量范围。例如，弹力为700N，显示器重量范围2～9kg，若调整弹力到800N，可达到3～11kg。
采用了本公开实施例的可自由调高度的显示器支架，使用机械弹簧6，实现高度调节自由停，较气弹簧支架更佳。由于显示器支架中设置有平行四边形结构，可以通过调整上连接臂2或下连接臂3与水平面之间的夹角，调整安装在连接头4的显示器的高度。此外，由于显示器支架还包括机械弹簧6、螺纹滑块7以及螺纹杆8，且能够通过对螺纹杆8操作使其旋转，驱动螺纹滑块7沿螺纹杆8移动，由于机械弹簧6铰接于螺纹滑块7，这样，当螺纹滑块 7沿螺纹杆8移动时，机械弹簧6的长度在变化，机械弹簧6所产生的弹力也在变化。连接头4上固定的显示器能够对连接头4产生顺时针的重力转矩，机械弹簧6又能够对连接头4产生逆时针的弹力转矩，因此，通过显示器的重量，确定弹力大小，以确定机械弹簧6的变形量以及螺纹滑块7在螺纹杆8上的位置，从而使重力转矩与弹力转矩大小相同，由此能够使得显示器所受到的两个转矩相互抵消，则显示器在被调整位置后固定在该位置处。
如图7至图12b所示，本公开实施例的另一方面提供一种可自由调高度的显示器支架实施例，其中显示器支架包括基座1和连接头4，基座1可以安装在支撑臂上，连接头4上设置连接板25，用于安装显示器。
如图8所示，基座1和连接头4之间设置相平行的上连接臂2和下连接臂3，上连接臂2、下连接臂3的端部分别与基座1、连接头4相铰接。
图10为图9显示的显示器支架的简化图，如图10所示，其中，上连接臂2、下连接臂3的端部分别与基座1、连接头4相铰接，形成四个铰接点a、b、c、d，上连接臂2与连接头4之间形成铰接点a，下连接臂3与连接头4之间形成铰接点b，下连接臂3与基座1之间形成铰接点d，上连接臂2与基座1之间形成铰接点c，铰接点a与铰接点b之间为连接头4，铰接点c和铰接点d之间为基座1，上连接臂2、下连接臂3、基座1、连接头4以及四个铰接点a、b、c、d之间形成一个平行四边形结构，铰接点a、b、c、d为该平行四边形结构的四个顶点。
上连接臂2和下连接臂3，均通过连接轴和与连接轴相匹配的轴孔的方式，与基座1和连接头4相铰接。其中，如图8所示，上连接臂2通过轴孔30和16，和与之相匹配的连接轴29、13以及11，与基座1和连接头4相铰接；下连接臂3通过连接轴12、14以及相应的轴孔，分别与基座1和连接头4相铰接。因此，连接头4可以围绕基座1转动，实现连接头4位置的变化。
如图7至图10所示，显示器支架还包括弹性力平衡机构，弹性力平衡机构包括弹性件27和调节杆10，调节杆10的一端与上连接臂2相铰接，调节杆10的另一端与弹性件27的一端螺纹连接，弹性件27的另一端与连接头4相铰接。如图10所示，弹性件27与连接头4形成连接点e。
基于平行四边形结构和弹性力平衡机构，可以根据所要安装的显示器的重量调整弹性力平衡机构的弹性力，使得在向上或向下移动连接头4时，连接头4可停止在相对于基座1的不同高度。其中，在操作调节杆10的端部驱动调节杆10转动时，带动弹性件27伸缩，以使弹性件27的弹性力与连接头4上的显示器的重量相匹配。
具体地，连接头4上固定的显示器能够对连接头4产生顺时针的重力转矩，弹性力平衡机构又能够对连接头4产生逆时针的弹力转矩，因此，通过显示器的重量，确定弹性力平衡机构的弹力大小，从而使重力转矩与弹力转矩大小相同，由此能够使得显示器所受到的两个转矩相互抵消，则显示器在被调整位置后固定在该位置处。
因此，在使用本公开实施例的产品时，可以通过调整弹性件27的弹性力来适应不同重量的例如显示器的重物。例如，当安装的重物为1kg，使用例如扳手的工具转动调节杆10使得弹性件27被拉伸至产生一定变形量，直至弹性件27的弹性力与重物达到平衡，达到平衡后，可以将显示器向上移动或向下移动至任何位置，而不会出现往下掉或者往上升的情况，即实现可停止至任意高度。当需要安装的重物为10kg时，同理，也需要通过转动调节杆10使得弹性件27拉伸至产生一定的变形量，使得弹性件27的弹性力与重物达到新的平衡。
具体地，如图7和图10所示，上连接臂2的端部设置操作孔26，调节杆10的端部安装于操作孔26，通过操作孔26操作调节杆10的端部。
如图8所示，弹性件27可以通过其端部的安装圈17安装于连接头4的安装轴15，对于弹性件27的端部在连接头4和上连接臂2的具体位置，如图10所示的实施例中，铰接点a和铰接点b位于同一竖直平面，铰接点c和铰接点d位于同一平面，弹性件27与连接头4形成的连接点e位于铰接点a和铰接点b所在竖直平面的外侧，调节杆10与上连接臂2的连接点位于铰接点c和铰接点d所在竖直平面的外侧。其中，弹性件27与连接头4形成的连接点e位于下连接臂3与连接头4之间的铰接点b的斜下方。除此之外，弹性件27与连接头4形成的连接点e可以位于连接头4的其他任意位置，例如，位于下连接臂3与连接头4之间的铰接点b，或者位于铰接点b的斜上方等。
如图10所示，设定，上连接臂2的长度为L，弹性力平衡机构和上连接臂2的夹角为β，上连接臂2与水平面夹角α，G为重力，F为弹力，圆弧为点a的运动轨迹。因重力向下，针对重物，由重物自身的重力提供的转矩的方向为顺时针，由弹性件27为重物提供的转矩的方向为逆时针，两者方向相反。且由重物自身的重力提供的转矩为M1＝GL*cos(α)，弹性件27提供拉力的转矩为M2＝F*L*sin(β)，因此，当M1＝M2时，沿顺时针与逆时针的转矩大小相等，互相抵消，即可以实现在在任意高度上停止。
基于本公开实施例的弹性力平衡机构相对于平行四边形结构的设置位置，如图11a至图12b所示，当调整显示器和弹性力平衡机构达到平衡后，显示器可上下任意转动并停止，显示器在上下转动过程中，弹性件27会不断被拉伸，弹性力增大，弹性力平衡机构和上连接臂2的夹角β会减小，由6°变化至5°，再变化至3°，使得转矩不变，从而使得在上下转动过程中，弹性件27提供的转矩在任何位置达到相同，实现在任何位置可自由停止。
采用了本公开实施例的可自由调高度的显示器支架，基于弹性力平衡机构相对于平行四边形结构的设置位置，可以实现调高度时自由停止，并且零件少，结构简单，成本较低，外观美观。
需要说明的是，在本文中，诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来，而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。
以上所述仅为本公开的较佳实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本公开保护的范围之内。

Claims (13)

  1. 一种可自由调高度的显示器支架，所述显示器支架包括基座和用于安装显示器的连接头，所述基座和所述连接头之间设置有相平行的上连接臂和下连接臂，所述上连接臂与所述连接头之间的铰接点、所述连接头、所述下连接臂与所述连接头之间的铰接点、所述下连接臂、所述下连接臂与所述基座的铰接点、所述基座、所述上连接臂与基座的铰接点、以及所述上连接臂之间形成四边形结构；
    所述显示器支架还包括机械弹簧，所述机械弹簧的一端与所述连接头或所述下连接臂相铰接，所述机械弹簧的另一端与螺纹滑块相铰接，所述螺纹滑块套接在所述螺纹杆上，所述螺纹杆设置在所述基座内，使得在操作所述螺纹杆的端部而驱动所述螺纹杆旋转时，所述螺纹滑块沿所述螺纹杆移动，根据所述连接头上的显示器的重量调整所述螺纹滑块在所述螺纹杆上的位置，使得在向上或向下移动所述连接头时，所述连接头停止在相对于所述基座的不同高度。
  2. 根据权利要求1所述的可自由调高度的显示器支架，其中，所述显示器支架满足第一平衡条件和第二平衡条件，所述第一平衡条件为：保持所述连接头处于预设高度范围中的任一高度，通过驱动所述螺纹杆旋转带动所述螺纹滑块移动，保证重力转矩M1等于弹力转矩M2，以适配处于预设重量范围中的任一重量的显示器；所述第二平衡条件为：根据所述第一平衡条件，保持对应于显示器重量的所述螺纹滑块在所述螺纹杆中的位置，在所述预设高度范围内任意改变所述连接头的高度时，保证重力转矩M1等于弹力转矩M2，实现所述连接头停止在相对于所述基座的不同高度。
  3. 根据权利要求1所述的可自由调高度的显示器支架，其中，所述螺纹杆设置成与所述螺纹滑块的运动轨迹相一致，所述螺纹滑块的运动轨迹为位于四边形e 1f 1f 2e 2范围内的点e 0和点f 0连成的线段，所述四边形e 1f 1f 2e 2范围为通过将线段ef沿垂直于所述线段ef的方向向上及向下平移5mm，分别获得线段e 1f 1和e 2f 2而形成，点e和点f分别为圆C与直线La和直线Lb的交点，圆C为以所述机械弹簧与所述连接头或所述下连接臂的连接点为圆心、在所述连接头处于预设最大高度时所述机械弹簧的长度L1为半径的圆，直线La和 Lb分别为所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角b在最大值和最小值时所述机械弹簧所在直线。
  4. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其中，所述螺纹杆与远离所述连接头的水平方向之间的夹角为0～80°。
  5. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其中，在所述连接头处于预设最大高度时，所述机械弹簧的长度L 1设置为L-x，其中，L为所述机械弹簧与所述连接头或所述下连接臂的连接点，到所述下连接臂与所述基座的铰接点之间的距离，x为-10～30mm。
  6. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其中，在保持所述连接头处于预设高度范围中的任一水平高度时，根据所述显示器的预设重量范围的最大值和最小值，获得所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角b的最大值和最小值。
  7. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其中，所述机械弹簧的弹性系数K为Kmin～Kmax，其中Kmax-Kmin≤15，并且Kmin、Kmax通过下式获得：
    Figure PCTCN2021088201-appb-100001
    式中，G为显示器重量；
    a1，a2分别为所述连接头在预设高度范围内的任意两个高度时，所述上连接臂或所述下连接臂与水平面之间的角度；
    b1，b2分别为a1、a2对应的所述机械弹簧与所述上连接臂或者所述下连接臂之间的夹角；
    L1，L1'分别为a1、a2对应的所述机械弹簧的长度。
  8. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其中，所述螺纹杆的一端设置为操作端，所述螺纹杆的另一端可旋转地设置在所述安装座内，使得通过对所述螺纹杆的所述操作端施力以驱动所述螺纹杆旋转。
  9. 根据权利要求1至3中任一项所述的可自由调高度的显示器支架，其 中，所述显示器支架包括调节杆，所述调节杆的一端与所述连接头或所述下连接臂相铰接，所述调节杆的另一端与所述机械弹簧的一端螺纹连接，在操作所述调节杆的端部驱动所述调节杆转动时，带动所述机械弹簧伸缩，以调整所述机械弹簧的弹性力，以及适配预设重量范围的显示器。
  10. 一种可自由调高度的显示器支架，其中，所述显示器支架包括基座和用于安装显示器的连接头，所述基座和所述连接头之间设置相平行的上连接臂和下连接臂，所述上连接臂与所述连接头之间的铰接点、所述连接头、所述下连接臂与所述连接头之间的铰接点、所述下连接臂、所述下连接臂与所述基座的铰接点、所述基座、所述上连接臂与所述基座的铰接点、以及所述上连接臂之间形成平行四边形结构，所述显示器支架还包括弹性力平衡机构，所述弹性力平衡机构的一端与所述上连接臂相铰接，所述弹性力平衡机构的另一端与所述连接头相铰接，根据所述连接头上的显示器调整所述弹性力平衡机构的弹性力，使得在向上或向下移动所述连接头时，所述连接头停止在相对于所述基座的不同高度。
  11. 根据权利要求10所述的可自由调高度的显示器支架，其中，所述弹性力平衡机构包括弹性件和调节杆，所述调节杆的一端与所述上连接臂相铰接，所述调节杆的另一端与所述弹性件的一端螺纹连接，所述弹性件的另一端与所述连接头相连接，在操作所述调节杆的端部驱动所述调节杆转动时，带动所述弹性件伸缩，以使所述弹性件的弹性力与所述连接头上的显示器的重量相匹配。
  12. 根据权利要求11所述的可自由调高度的显示器支架，其中，所述上连接臂的端部设置操作孔，所述调节杆的端部安装于所述操作孔，通过所述操作孔操作所述调节杆的端部。
  13. 根据权利要求10所述的可自由调高度的显示器支架，其中，所述上连接臂和所述下连接臂，均通过所述连接轴和与所述连接轴相匹配的轴孔，与所述基座以及所述连接头相铰接。
PCT/CN2021/088201 2020-04-20 2021-04-19 一种可自由调高度的显示器支架 Ceased WO2021213342A1 (zh)

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