WO2015154575A1 - 平板显示器支架 - Google Patents

平板显示器支架 Download PDF

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Publication number
WO2015154575A1
WO2015154575A1 PCT/CN2015/071731 CN2015071731W WO2015154575A1 WO 2015154575 A1 WO2015154575 A1 WO 2015154575A1 CN 2015071731 W CN2015071731 W CN 2015071731W WO 2015154575 A1 WO2015154575 A1 WO 2015154575A1
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WIPO (PCT)
Prior art keywords
rocker arm
rotating shaft
wall
base
rotating
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PCT/CN2015/071731
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English (en)
French (fr)
Inventor
项乐宏
林涛
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宁波乐歌视讯科技股份有限公司
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Publication of WO2015154575A1 publication Critical patent/WO2015154575A1/zh

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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
    • F16M11/02—Heads
    • F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/06—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting
    • F16M11/12—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand allowing pivoting in more than one direction

Definitions

  • the invention relates to a flat panel display stand.
  • the disclosed technical solution includes: a base, a display hanging plate assembly, a butterfly screw, a first rocker arm and a second rocker arm.
  • the butterfly screw is coupled to the base and configured to mount the bracket on the table top, and one end of the first rocker arm is rotatably coupled to the rotating shaft on the base, and the other end of the first rocker arm and the second rocker arm One end is rotatably connected, and the other end of the second rocker arm is connected to a connector, and the connector is connected to the display panel assembly.
  • the display hanging plate assembly comprises a hanging plate, a connecting piece and a connecting block, one end of the connecting block is hinged with the connecting head, the other end of the connecting block is hinged with the connecting piece, and the hanging plate is rotatably connected by the pin shaft. On the connector.
  • the second rocker arm of the display bracket is composed of a large joint die casting, a friction ring, an outer pressure casting, an inner pressure casting, a roller, a compression spring, and a small joint die casting;
  • the large joint die casting has a cylindrical hole at one end for connecting The outer cylindrical wall of the friction ring, the inner cylindrical wall of the friction ring cooperates with the cylindrical shaft of the lower aluminum member, so that the horizontal rotation of the second rocker arm can be realized, and the other end of the large joint die casting is provided with an arc surface, and the roller is rolled thereon
  • the roller pushes the compression spring, the external pressure casting, the internal pressure casting and the large and small joint die casting constitute a four-link moving mechanism, so that the lifting and lowering of the second rocker arm can be realized, and the pressure spring and the roller are mainly arranged to prevent the second rocker arm Tilting downward due to its own weight, but when adjusting the angle of the second rocker arm downwards, it is necessary to overcome the elastic force of the compression spring, and the
  • the technical problem to be solved by the present invention is to overcome the above drawbacks of the prior art, and to provide a flat panel display bracket that not only prevents the second rocker arm from tilting downward due to its own weight, but also makes the angle of the hanging plate adjustable and labor-saving.
  • One technical solution of the present invention is to provide a flat panel display stand having a structure including a stand body and a display hanging plate assembly, the stand body including a base, a first rocker arm and a second rocker arm, the first One end of the rocker arm is rotatably connected to the rotating shaft on the base, and the other end of the first rocker arm is rotatably connected to one end of the second rocker arm, and the display hanging plate assembly comprises a hanging plate and a connecting block, and the connecting block is One end is hinged to the second rocker arm, and the other end of the connecting block is The hanging plate is hinged, and a rotating seat is disposed between the first rocker arm and the second rocker arm, a lower end of the rotating seat is rotatably connected to the first rocker arm, and the second rocker arm is hinged to the rotating seat through the rotating shaft.
  • a one-way bearing is connected to the rotating shaft, and an outer circumferential wall of the one-way bearing is in close contact with an inner wall of the mounting hole of the rotating shaft of the rotating base, and both ends of the rotating shaft are fixedly mounted on the two side walls of the second rocker arm .
  • a flat panel display bracket having a structure including a bracket body and a display panel assembly, the bracket body including a base, a first rocker arm and a second rocker arm, One end of a rocker arm is rotatably connected to a rotating shaft on the base, and the other end of the first rocker arm is rotatably connected to one end of the second rocker arm, and the display hanging plate assembly comprises a hanging plate and a connecting block, the first The second rocker arm is composed of an upper arm and a lower arm, the connecting block is hinged to the hanging plate, and a rotating seat is disposed between the first rocker arm and the second rocker arm, and the lower end of the rotating seat and the first rocker arm are Rotating connection, one end of the upper arm of the second rocker arm is hinged to the rotating seat through the rotating shaft, the other end of the upper arm is hinged to the connecting block, and one end of the lower arm of the second rocker arm is hinged to the side wall of the rotating seat, and
  • the outer circumferential wall of the one-way bearing in the two kinds of flat panel display bracket structures closely fits the inner wall of the mounting hole of the rotating shaft of the rotating base, and refers to the tightness between the outer circumferential wall of the one-way bearing and the inner wall of the mounting hole of the rotating shaft of the rotating seat. Fitted, and the two can rotate relative to each other and have rotational friction.
  • the flat panel display bracket of the present invention has the following advantages: a rotating seat is disposed between the first rocker arm and the second rocker arm of the flat panel display bracket, and the lower end of the rotating seat is a rocker arm is rotatably connected, the second rocker arm is hinged to the rotating seat through the rotating shaft, and a one-way bearing is connected to the rotating shaft, and the outer circumferential wall of the one-way bearing is in close contact with the inner wall of the mounting hole of the rotating shaft of the rotating seat; Therefore, when the second rocker arm rotates down the rotation axis, the one-way bearing on the rotating shaft is internally locked, so that the outer ring of the one-way bearing cannot rotate relative to the inner ring, and the outer circumferential wall and the rotating shaft of the one-way bearing are installed.
  • the outer circumferential wall of the one-way bearing is in close contact with the inner wall of the mounting hole of the rotating shaft of the rotating base, which means that the upper end of the rotating seat is fixedly connected with a connecting ring, and the connecting ring is provided with a rotating shaft
  • the central hole is mounted, and the rotating shaft is matched with the inner wall of the central hole, and the outer circumferential wall of the one-way bearing on the rotating shaft is in close contact with the inner wall of the central hole.
  • the connection ring The installation of the shaft is more convenient.
  • a plastic bushing is connected to the center hole of the connecting ring, and the rotating shaft gap fits in the inner hole of the plastic bushing, and the outer circumferential wall of the one-way bearing and the inner hole of the plastic bushing The inner wall fits snugly.
  • the outer circumferential wall of the one-way bearing is in close contact with the inner wall of the inner hole of the plastic bushing so as to elastically abut against each other and have a smooth rotational frictional force in relative rotation.
  • the side wall of the connecting ring is provided with a longitudinal opening extending through the two ends thereof, and the outer wall on both sides of the longitudinal opening is provided with two opposite radial convex walls, and the two radial convex walls Adjustment screws are mounted on the top.
  • the adjusting screw acts to tighten the longitudinal opening to substantially clamp the central hole of the connecting ring, so that the adjusting screw can adjust the size of the central hole of the connecting ring, thereby adjusting the one-way bearing and mounting on the rotating shaft The amount of friction between the inner walls of the holes.
  • the plastic bushing is provided with a longitudinal gap extending through its ends.
  • the longitudinal notch is used to facilitate the clamping of the outer circumferential wall of the one-way bearing by the plastic bushing, so that the friction between the plastic bushing and the one-way bearing can be conveniently adjusted.
  • the rotating shaft comprises a shoulder portion and a light rod portion, wherein the one-way bearing is mounted on the light rod portion, and the outer side of the light rod portion of the rotating shaft is provided with a bump with two parallel cutting edges, and the shoulder of the rotating shaft a longitudinal section is disposed on a side wall of the second rocker arm, and a hole is disposed on the side wall of the shaft shoulder of the rotating shaft, and the other side wall of the second rocker arm is provided with the rotating shaft
  • the two parallel cutting edges of the protrusion are matched with the long through hole installed; the outer end of the protrusion of the rotating shaft is provided with a pressing screw.
  • a bottom of the base is connected with a support plate, the support plate is screwed to an adjusting screw, a lower end of the adjusting screw is connected with a knob, and an upper end of the adjusting screw is fixedly connected with a gasket, and the gasket is There is a space between the bases that can be clamped on the table top.
  • the adjusting screw can be used for fixedly connecting the bracket body to the desktop.
  • FIG. 1 is a schematic structural view of a first embodiment of a flat panel display support of the present invention.
  • FIG. 2 is a schematic view showing the assembled structure of the first embodiment of the flat panel display support of the present invention.
  • FIG 3 is a schematic structural view of a second embodiment of the flat panel display bracket of the present invention.
  • FIG. 4 is a schematic view showing the assembled structure of the second embodiment of the flat panel display support of the present invention.
  • FIG. 5 is a schematic structural view of a third embodiment of the flat panel display bracket of the present invention.
  • FIG. 6 is a schematic view showing the assembled structure of the third embodiment of the flat panel display holder of the present invention.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • the flat panel display bracket of the present invention comprises a bracket body and a display hanging plate assembly, the bracket body comprising a base 1, a first rocker arm 2 and a second rocker arm 3, one end of the first rocker arm 2 and the base 1
  • the rotating shaft is rotatably connected, and the other end of the first rocker arm 2 is rotatably connected to one end of the second rocker arm 3.
  • the display hanging plate assembly includes a hanging plate 22 and a connecting block 20, and one end of the connecting block 20 is The second rocker arm 3 is hinged, the other end of the connecting block 20 is hinged with the hanging plate 22, and a rotating seat 4 is disposed between the first rocker arm 2 and the second rocker arm 3.
  • the lower end of the rotating base 4 is The first rocker arm 2 is rotatably connected, and the second rocker arm 3 is hinged to the rotating base 4 via a rotating shaft 7, and the rotating shaft 7 is connected with a one-way bearing 8, and the outer circumferential wall of the one-way bearing 8 is rotated.
  • the inner wall of the mounting hole of the upper shaft 7 of the seat 4 is in close contact with each other, and both ends of the rotating shaft 7 are fixedly mounted on the two side walls of the second rocker arm 3.
  • the outer circumferential wall of the one-way bearing 8 is in close contact with the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4, that is, the outer circumferential wall of the one-way bearing 8 and the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4 are pressed together. And the two can rotate relative to each other and have rotational friction.
  • the outer circumferential wall of the one-way bearing 8 is in close contact with the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4, which means that the upper end of the rotating base 4 is fixedly connected with a connecting ring 5, and the connecting ring 5 is provided with
  • the central hole 6 of the rotating shaft 7 is fitted, and the rotating shaft 7 is clearance-fitted with the inner wall of the central hole 6, and the outer circumferential wall of the one-way bearing 8 on the rotating shaft 7 is in close contact with the inner wall of the central hole 6.
  • a plastic bushing 13 is connected to the center hole 6 of the connecting ring 5, and the rotating shaft 7 is gap-fitted in the inner hole 14 of the plastic bushing 13.
  • the outer circumferential wall of the one-way bearing 8 and the plastic bushing 13 The inner wall of the inner hole 14 is in close contact.
  • the side wall of the connecting ring 5 is provided with a longitudinal opening extending through the two ends thereof, and the outer wall on both sides of the longitudinal opening is provided with two opposite radial convex walls 16, which are mounted on the two radial convex walls 16 There are adjustment screws 17.
  • the plastic bushing 13 is provided with a longitudinal notch 15 extending through both ends thereof.
  • the rotating shaft 7 includes a shoulder portion 10 and a polished rod portion 9.
  • the one-way bearing 8 is mounted on the polished rod portion 9.
  • the outer side of the polished rod portion 9 of the rotating shaft 7 is provided with a bump 11 with two parallel cut edges.
  • the shoulder portion 10 of the rotating shaft 7 is provided with a longitudinal section 12, and a side wall of the second rocker arm 3 is provided with a hole 18 which is matched with the longitudinal section 12 of the shoulder portion 10 of the rotating shaft 7, and a second
  • the other side wall of the rocker arm 3 is provided with an elongated through hole which is matched with two parallel cutting edges of the projection 11 of the rotating shaft 7; the outer end of the protruding block 11 of the rotating shaft 7 is provided with a pressing screw 19.
  • a support plate 23 is connected to the bottom of the base 1.
  • the support plate 23 is screwed to an adjusting screw 24, a lower end of the adjusting screw 24 is connected to a knob 25, and an upper end of the adjusting screw 24 is fixedly connected to a washer 26, and A space between the spacer 26 and the base 1 is held on the table top.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • a flat panel display bracket includes a bracket body and a display panel assembly, the bracket body including a base 1, a first rocker arm 2 and a second rocker arm 3, one end of the first rocker arm 2 and a base
  • the rotating shaft of the first rocker arm 2 is rotatably connected to one end of the second rocker arm 3
  • the display hanging plate assembly comprises a hanging plate 22 and a connecting block 20, the second shaking
  • the arm 3 is composed of an upper arm 27 and a lower arm 21, the connecting block 20 is hinged with the hanging plate 22, and a rotating seat 4 is arranged between the first rocker arm 2 and the second rocker arm 3.
  • the lower end is rotatably coupled to the first rocker arm 2, one end of the upper arm 27 of the second rocker arm 3 is hinged to the rotating base 4 via the rotating shaft 7, and the other end of the upper arm 27 is hinged to the connecting block 20, and the lower side of the second rocker arm 3
  • One end of the arm 21 is hinged to the side wall of the rotating base 4, and the other end of the lower arm 21 is hinged to the connecting block 20.
  • the rotating shaft 7 is connected with a one-way bearing 8, and the outer circumferential wall and the rotating seat of the one-way bearing 8 4
  • the inner wall of the mounting hole of the upper rotating shaft 7 is in close contact with each other, and both ends of the rotating shaft 7 are fixedly mounted on both side walls of the upper arm 27 of the second rocker arm 3.
  • the outer circumferential wall of the one-way bearing 8 is in close contact with the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4, that is, the outer circumferential wall of the one-way bearing 8 and the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4 are pressed together. And the two can rotate relative to each other and have rotational friction.
  • the outer circumferential wall of the one-way bearing 8 is in close contact with the inner wall of the mounting hole of the rotating shaft 7 of the rotating base 4, which means that the upper end of the rotating base 4 is fixedly connected with a connecting ring 5, and the connecting ring 5 is provided with
  • the central hole 6 of the rotating shaft 7 is fitted, and the rotating shaft 7 is clearance-fitted with the inner wall of the central hole 6, and the outer circumferential wall of the one-way bearing 8 on the rotating shaft 7 is in close contact with the inner wall of the central hole 6.
  • a plastic bushing 13 is connected to the center hole 6 of the connecting ring 5, and the rotating shaft 7 is gap-fitted in the inner hole 14 of the plastic bushing 13.
  • the outer circumferential wall of the one-way bearing 8 and the plastic bushing 13 The inner wall of the inner hole 14 is in close contact.
  • the side wall of the connecting ring 5 is provided with a longitudinal opening extending through the two ends thereof, and the outer wall on both sides of the longitudinal opening is provided with two opposite radial convex walls 16, which are mounted on the two radial convex walls 16 There are adjustment screws 17.
  • the plastic bushing 13 is provided with a longitudinal notch 15 extending through both ends thereof.
  • the rotating shaft 7 includes a shoulder portion 10 and a polished rod portion 9.
  • the one-way bearing 8 is mounted on the polished rod portion 9.
  • the outer side of the polished rod portion 9 of the rotating shaft 7 is provided with a bump 11 with two parallel cut edges.
  • the shoulder portion 10 of the rotating shaft 7 is provided with a longitudinal section 12, and a side wall of the second rocker arm 3 is provided with a hole 18 which is matched with the longitudinal section 12 of the shoulder portion 10 of the rotating shaft 7, and a second
  • the other side wall of the rocker arm 3 is provided with an elongated through hole which is matched with two parallel cutting edges of the projection 11 of the rotating shaft 7; the outer end of the protruding block 11 of the rotating shaft 7 is provided with a pressing screw 19.
  • a support plate 23 is connected to the bottom of the base 1.
  • the support plate 23 is screwed to an adjusting screw 24, a lower end of the adjusting screw 24 is connected to a knob 25, and an upper end of the adjusting screw 24 is fixedly connected to a washer 26, and A space between the spacer 26 and the base 1 is held on the table top.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • One end of the connecting block 20 is horizontally hinged at the upper end of the second rocker arm 3, so that when the connecting block 20 is rotated, the required torque is small and the operation is labor-saving. Others are the same as the first embodiment, and therefore will not be described in detail.

Abstract

一种平板显示器支架，其包括底座（1）、第一摇臂（2）和第二摇臂（3），第一摇臂（2）的一端与底座（1）上的转轴（7）可转动连接，第一摇臂（2）的另一端与第二摇臂（3）的一端可转动连接，还包括挂板（22）和连接块（20），连接块（20）的一端与第二摇臂（3）铰接，连接块（20）的另一端与挂板（22）铰接，第一摇臂（2）和第二摇臂（3）之间设有一转动座（4），该转动座（4）的下端与第一摇臂（2）可转动连接，第二摇臂（3）通过转轴（7）与转动座（4）铰接，转轴（7）上连接一单向轴承（8），单向轴承（8）的外圆周壁与转动座（4）上转轴（7）的安装孔内壁紧贴合，转轴（7）的两端固定安装在第二摇臂（3）两侧壁上。该平板显示器支架既防止第二摇臂（3）因自重造成挂板（22）向下倾斜，又使挂板（22）的角度调节省力、方便。

Description

平板显示器支架 技术领域
本发明涉及一种平板显示器支架。
背景技术
随着社会的不断发展，显示器、平板电脑等在普通家庭、展览场所中也越来越普及，为节省桌面或室内空间，与之相配套的支架应运而生。如国家知识产权局网站上公开一种名称为全方位自由臂显示器支架的发明专利，其公开的技术方案包括：底座、显示器挂板组件、蝶形螺杆、第一摇臂和第二摇臂，所述的蝶形螺杆连接在底座上且用于将支架安装在桌面上，所述的第一摇臂的一端与底座上的转轴转动连接，第一摇臂的另一端与第二摇臂的一端可转动连接，第二摇臂的另一端连接一连接头，所述的连接头与显示器挂板组件连接。所述的显示器挂板组件包括挂板、连接件和连接块，所述连接块的一端与连接头铰接，连接块的另一端与连接件铰接，所述的挂板通过销轴可转动连接在连接件上。
上述显示器支架的第二摇臂由大关节压铸件、摩擦圈、外压铸件、内压铸件、滚轮、压簧、小关节压铸件组成；所述大关节压铸件一端设置圆柱孔，用以连接摩擦圈的外圆柱壁，摩擦圈的内圆柱壁与下铝件的圆柱轴配合，如此便可实现第二摇臂的水平旋转，大关节压铸件另一端设置圆弧面，滚轮在其上滚动，滚轮推动压簧，外压铸件、内压铸件与大小关节压铸件组成四连杆运动机构，如此便可实现第二摇臂的升降，该压簧及滚轮的设置主要为了防止第二摇臂因自重而向下倾斜，但人们在向下调节第二摇臂角度时，需要克服压簧的弹力，而且越向下转动所需要克服压簧的力越大，这样第二摇臂的升降调节比较费力，调节角度的准确性、稳定性较差，且其结构比较复杂，安装较为不便。
发明内容
本发明要解决的技术问题是，克服以上现有技术的缺陷，提供一种既防止第二摇臂因自重造成挂板向下倾斜，又使挂板的角度调节省力、方便的平板显示器支架。
本发明的一个技术解决方案是，提供具有以下结构的平板显示器支架：它包括支架本体和显示器挂板组件，所述的支架本体包括底座、第一摇臂和第二摇臂，所述第一摇臂的一端与底座上的转轴可转动连接，第一摇臂的另一端与第二摇臂的一端可转动连接，所述的显示器挂板组件包括挂板和连接块，所述连接块的一端与第二摇臂铰接，所述连接块的另一端与 挂板铰接，所述第一摇臂和第二摇臂之间设有一转动座，所述转动座的下端与第一摇臂可转动连接，所述第二摇臂通过转轴与转动座铰接，所述的转轴上连接一单向轴承，所述单向轴承的外圆周壁与转动座上转轴的安装孔内壁紧贴合，所述转轴的两端固定安装在第二摇臂两侧壁上。
本发明的另一个技术解决方案是，提供具有以下结构的平板显示器支架：它包括支架本体和显示器挂板组件，所述的支架本体包括底座、第一摇臂和第二摇臂，所述第一摇臂的一端与底座上的转轴可转动连接，第一摇臂的另一端与第二摇臂的一端可转动连接，所述的显示器挂板组件包括挂板和连接块，所述的第二摇臂由上臂和下臂组成，所述的连接块与挂板铰接，所述第一摇臂和第二摇臂之间设有一转动座，所述转动座的下端与第一摇臂可转动连接，所述第二摇臂的上臂的一端通过转轴与转动座铰接，上臂的另一端与连接块铰接，第二摇臂的下臂的一端与转动座侧壁铰接，下臂的另一端与连接块铰接；所述的转轴上连接一单向轴承，所述单向轴承的外圆周壁与转动座上转轴的安装孔内壁紧贴合，所述转轴的两端固定安装在第二摇臂的上臂的两侧壁上。
上述二种平板显示器支架结构中的单向轴承的外圆周壁与转动座上转轴的安装孔内壁紧贴合，是指单向轴承的外圆周壁与转动座上转轴的安装孔内壁之间紧贴合，且两者之间可以相对转动，并具有转动摩擦力。
采用上述二种结构后，本发明平板显示器支架与现有技术相比，具有以下优点：该平板显示器支架的第一摇臂和第二摇臂之间设有一转动座，转动座的下端与第一摇臂可转动连接，所述第二摇臂通过转轴与转动座铰接，且转轴上连接一单向轴承，该单向轴承的外圆周壁与转动座上转轴的安装孔内壁紧贴合；因此该第二摇臂沿转轴向下转动时，转轴上的单向轴承内部锁死，从而使单向轴承的外圈相对内圈不能转动，依靠克服单向轴承的外圆周壁与转轴安装孔内壁之间的摩擦力而转动，因此单向轴承的外圆周壁与转轴安装孔内壁之间的摩擦力可以防止第二摇臂因自重造成向下倾斜；且在第二摇臂向下转动时的摩擦阻力平稳，调节省力方便，不会出现越向下转动所需要的力越大等调节不便的情况；在向上转动调节第二摇臂的角度时，转轴上的单向轴承的外圈相对内圈转动，从而使第二摇臂向上的转动阻力小，角度调节省力、方便。
作为一种优选，所述单向轴承的外圆周壁与转动座上转轴的安装孔内壁紧贴合，是指所述转动座的上端固定连接一连接圈，所述连接圈上设有供转轴安装的中心孔，所述转轴与中心孔的内壁间隙配合，且转轴上单向轴承的外圆周壁与中心孔的内壁紧贴合。该连接圈的设 置使转轴的安装更加方便。
作为一种改进，所述连接圈的中心孔内连接一塑料衬套，所述的转轴间隙配合在塑料衬套的内孔内，所述单向轴承的外圆周壁与塑料衬套的内孔的内壁紧贴合。单向轴承的外圆周壁与塑料衬套的内孔的内壁紧贴合，从而使两者之间弹性相抵，在相对转动时具有平稳的转动摩擦力。
作为一种改进，所述连接圈的侧壁上设有一贯穿其两端的纵向开口，且纵向开口两侧的外壁上设有两个相对的径向凸壁，所述的两个径向凸壁上安装有调节螺丝。所述调节螺丝起着拉紧纵向开口进而实质上使连接圈的中心孔夹紧包容物的作用，因此该调节螺丝可以调节连接圈的中心孔孔径的大小，从而调节转轴上单向轴承与安装孔内壁之间的摩擦力大小。
作为一种改进，所述塑料衬套上设有一贯穿其两端的纵向缺口。该纵向缺口用于方便塑料衬套夹紧单向轴承的外圆周壁，从而可以方便地调节塑料衬套与单向轴承之间的摩擦力。
作为优选，所述的转轴包括轴肩部和光杆部，所述的单向轴承安装光杆部上，所述转轴的光杆部外侧设有带两平行切边的凸块，所述转轴的轴肩部上设有一纵向切面，所述第二摇臂的一侧壁上设有与转轴的轴肩部上纵向切面相配合安装的孔，第二摇臂的另一侧壁上设有与转轴的凸块两平行切边相配合安装的长形通孔；所述转轴的凸块外端设有压紧螺丝。在第二摇臂向下转动时，单向轴承的外圆与衬套的内壁摩擦，从而不会使挂板上的显示器及第二摇臂因自重造成向下倾斜。
作为一种改进，所述底座的底部连接有支撑板，所述支撑板上螺纹连接一调节螺杆，所述调节螺杆的下端连接一旋钮，调节螺杆的上端固定连接一垫片，且垫片与底座之间设有可夹持在桌面板上的空间。该调节螺杆可以将支架本体固定连接在桌面上使用。
附图说明
图1是本发明平板显示器支架实施例一的结构示意图。
图2是本发明平板显示器支架实施例一的组装结构示意图。
图3是本发明平板显示器支架实施例二的结构示意图。
图4是本发明平板显示器支架实施例二的组装结构示意图。
图5是本发明平板显示器支架实施例三的结构示意图。
图6是本发明平板显示器支架实施例三的组装结构示意图。
如图所示：
1、底座，2、第一摇臂，3、第二摇臂，4、转动座，5、连接圈，6、中心孔，7、转轴，8、单向轴承，9、光杆部，10、轴肩部，11、凸块，12、纵向切面，13、塑料衬套，14、内 孔，15、纵向缺口，16、径向凸壁，17、调节螺丝，18、孔，19、压紧螺丝，20、连接块，21、下臂，22、挂板，23、支撑板，24、调节螺杆，25、旋钮，26、垫片，27、上臂。
具体实施方式
下面结合附图和具体实施例对本发明作进一步详细说明。
实施例一：
如图1和图2所示；
本发明平板显示器支架，它包括支架本体和显示器挂板组件，所述的支架本体包括底座1、第一摇臂2和第二摇臂3，所述第一摇臂2的一端与底座1上的转轴可转动连接，第一摇臂2的另一端与第二摇臂3的一端可转动连接，所述的显示器挂板组件包括挂板22和连接块20，所述连接块20的一端与第二摇臂3铰接，所述连接块20的另一端与挂板22铰接，所述第一摇臂2和第二摇臂3之间设有一转动座4，所述转动座4的下端与第一摇臂2可转动连接，所述第二摇臂3通过转轴7与转动座4铰接，所述的转轴7上连接一单向轴承8，所述单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，所述转轴7的两端固定安装在第二摇臂3两侧壁上。
单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，也就是说单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁之间压紧贴合，且两者之间可以相对转动，并具有转动摩擦力。
所述单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，是指所述转动座4的上端固定连接一连接圈5，所述连接圈5上设有供转轴7安装的中心孔6，所述转轴7与中心孔6的内壁间隙配合，且转轴7上单向轴承8的外圆周壁与中心孔6的内壁紧贴合。
所述连接圈5的中心孔6内连接一塑料衬套13，所述的转轴7间隙配合在塑料衬套13的内孔14内，所述单向轴承8的外圆周壁与塑料衬套13的内孔14的内壁紧贴合。
所述连接圈5的侧壁上设有一贯穿其两端的纵向开口，且纵向开口两侧的外壁上设有两个相对的径向凸壁16，所述的两个径向凸壁16上安装有调节螺丝17。
所述塑料衬套13上设有一贯穿其两端的纵向缺口15。
所述的转轴7包括轴肩部10和光杆部9，所述的单向轴承8安装光杆部9上，所述转轴7的光杆部9外侧设有带两平行切边的凸块11，所述转轴7的轴肩部10上设有一纵向切面12，所述第二摇臂3的一侧壁上设有与转轴7的轴肩部10上纵向切面12相配合安装的孔18，第二摇臂3的另一侧壁上设有与转轴7的凸块11两平行切边相配合安装的长形通孔；所述转轴7的凸块11外端设有压紧螺丝19。
所述底座1的底部连接有支撑板23，所述支撑板23上螺纹连接一调节螺杆24，所述调节螺杆24的下端连接一旋钮25，调节螺杆24的上端固定连接一垫片26，且垫片26与底座1之间设有可夹持在桌面板上的空间。
实施例二：
如图3和图4所示：
本发明一种平板显示器支架，它包括支架本体和显示器挂板组件，所述的支架本体包括底座1、第一摇臂2和第二摇臂3，所述第一摇臂2的一端与底座1上的转轴可转动连接，第一摇臂2的另一端与第二摇臂3的一端可转动连接，所述的显示器挂板组件包括挂板22和连接块20，所述的第二摇臂3由上臂27和下臂21组成，所述的连接块20与挂板22铰接，所述第一摇臂2和第二摇臂3之间设有一转动座4，所述转动座4的下端与第一摇臂2可转动连接，所述第二摇臂3的上臂27的一端通过转轴7与转动座4铰接，上臂27的另一端与连接块20铰接，第二摇臂3的下臂21的一端与转动座4侧壁铰接，下臂21的另一端与连接块20铰接；所述的转轴7上连接一单向轴承8，所述单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，所述转轴7的两端固定安装在第二摇臂3的上臂27的两侧壁上。
单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，也就是说单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁之间压紧贴合，且两者之间可以相对转动，并具有转动摩擦力。
所述单向轴承8的外圆周壁与转动座4上转轴7的安装孔内壁紧贴合，是指所述转动座4的上端固定连接一连接圈5，所述连接圈5上设有供转轴7安装的中心孔6，所述转轴7与中心孔6的内壁间隙配合，且转轴7上单向轴承8的外圆周壁与中心孔6的内壁紧贴合。
所述连接圈5的中心孔6内连接一塑料衬套13，所述的转轴7间隙配合在塑料衬套13的内孔14内，所述单向轴承8的外圆周壁与塑料衬套13的内孔14的内壁紧贴合。
所述连接圈5的侧壁上设有一贯穿其两端的纵向开口，且纵向开口两侧的外壁上设有两个相对的径向凸壁16，所述的两个径向凸壁16上安装有调节螺丝17。
所述塑料衬套13上设有一贯穿其两端的纵向缺口15。
所述的转轴7包括轴肩部10和光杆部9，所述的单向轴承8安装光杆部9上，所述转轴7的光杆部9外侧设有带两平行切边的凸块11，所述转轴7的轴肩部10上设有一纵向切面12，所述第二摇臂3的一侧壁上设有与转轴7的轴肩部10上纵向切面12相配合安装的孔18，第二摇臂3的另一侧壁上设有与转轴7的凸块11两平行切边相配合安装的长形通孔；所述转轴7的凸块11外端设有压紧螺丝19。
所述底座1的底部连接有支撑板23，所述支撑板23上螺纹连接一调节螺杆24，所述调节螺杆24的下端连接一旋钮25，调节螺杆24的上端固定连接一垫片26，且垫片26与底座1之间设有可夹持在桌面板上的空间。
实施例三：
如图5和图6所示：
所述连接块20的一端水平铰接在第二摇臂3的上端，这样在转动连接块20时，所需要的力矩小，操作省力。其他同实施例一，故不细述。
以上实施例仅对本发明权利要求做了较为详细的说明，不能理解为对权利要求的限制，凡是在本发明权利要求保护范围内的任何改进，均落入本发明的保护范围。

Claims (8)

  1. 一种平板显示器支架，它包括支架本体和显示器挂板组件，所述的支架本体包括底座(1)、第一摇臂(2)和第二摇臂(3)，所述第一摇臂(2)的一端与底座(1)上的转轴可转动连接，第一摇臂(2)的另一端与第二摇臂(3)的一端可转动连接，所述的显示器挂板组件包括挂板(22)和连接块(20)，所述连接块(20)的一端与第二摇臂(3)铰接，所述连接块(20)的另一端与挂板(22)铰接，其特征在于：所述第一摇臂(2)和第二摇臂(3)之间设有一转动座(4)，所述转动座(4)的下端与第一摇臂(2)可转动连接，所述第二摇臂(3)通过转轴(7)与转动座(4)铰接，所述的转轴(7)上连接一单向轴承(8)，所述单向轴承(8)的外圆周壁与转动座(4)上转轴(7)的安装孔内壁紧贴合，所述转轴(7)的两端固定安装在第二摇臂(3)两侧壁上。
  2. 一种平板显示器支架，它包括支架本体和显示器挂板组件，所述的支架本体包括底座(1)、第一摇臂(2)和第二摇臂(3)，所述第一摇臂(2)的一端与底座(1)上的转轴可转动连接，第一摇臂(2)的另一端与第二摇臂(3)的一端可转动连接，所述的显示器挂板组件包括挂板(22)和连接块(20)，所述的第二摇臂(3)由上臂(27)和下臂(21)组成，所述的连接块(20)与挂板(22)铰接，其特征在于：所述第一摇臂(2)和第二摇臂(3)之间设有一转动座(4)，所述转动座(4)的下端与第一摇臂(2)可转动连接，所述第二摇臂(3)的上臂(27)的一端通过转轴(7)与转动座(4)铰接，上臂(27)的另一端与连接块(20)铰接，第二摇臂(3)的下臂(21)的一端与转动座(4)侧壁铰接，下臂(21)的另一端与连接块(20)铰接；所述的转轴(7)上连接一单向轴承(8)，所述单向轴承(8)的外圆周壁与转动座(4)上转轴(7)的安装孔内壁紧贴合，所述转轴(7)的两端固定安装在第二摇臂(3)的上臂(27)的两侧壁上。
  3. 根据权利要求1或2所述的平板显示器支架，其特征在于：所述单向轴承(8)的外圆周壁与转动座(4)上转轴(7)的安装孔内壁紧贴合，是指所述转动座(4)的上端固定连接一连接圈(5)，所述连接圈(5)上设有供转轴(7)安装的中心孔(6)，所述转轴(7)与中心孔(6)的内壁间隙配合，且转轴(7)上单向轴承(8)的外圆周壁与中心孔(6)的内壁紧贴合。
  4. 根据权利要求3所述的平板显示器支架，其特征在于：所述连接圈(5)的中心孔(6)内连接一塑料衬套(13)，所述的转轴(7)间隙配合在塑料衬套(13)的内孔(14)内，所述单向轴承(8)的外圆周壁与塑料衬套(13)的内孔(14)的内壁紧贴合。
  5. 根据权利要求3所述的平板显示器支架，其特征在于：所述连接圈(5)的侧壁上设有一贯穿其两端的纵向开口，且纵向开口两侧的外壁上设有两个相对的径向凸壁(16)，所述的两个径向凸壁(16)上安装有调节螺丝(17)。
  6. 根据权利要求4所述的平板显示器支架，其特征在于：所述塑料衬套(13)上设有一贯穿其两端的纵向缺口(15)。
  7. 根据权利要求1或2所述的平板显示器支架，其特征在于：所述的转轴(7)包括轴肩部(10)和光杆部(9)，所述的单向轴承(8)安装光杆部(9)上，所述转轴(7)的光杆部(9)外侧设有带两平行切边的凸块(11)，所述转轴(7)的轴肩部(10)上设有一纵向切面(12)，所述第二摇臂(3)的一侧壁上设有与转轴(7)的轴肩部(10)上纵向切面(12)相配合安装的孔(18)，第二摇臂(3)的另一侧壁上设有与转轴(7)的凸块(11)两平行切边相配合安装的长形通孔；所述转轴(7)的凸块(11)外端设有压紧螺丝(19)。
  8. 根据权利要求1或2所述的平板显示器支架，其特征在于：所述底座(1)的底部连接有支撑板(23)，所述支撑板(23)上螺纹连接一调节螺杆(24)，所述调节螺杆(24)的下端连接一旋钮(25)，调节螺杆(24)的上端固定连接一垫片(26)，且垫片(26)与底座(1)之间设有可夹持在桌面板上的空间。
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