WO2019041647A1 - 一种移动脚架 - Google Patents

一种移动脚架 Download PDF

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Publication number
WO2019041647A1
WO2019041647A1 PCT/CN2017/116511 CN2017116511W WO2019041647A1 WO 2019041647 A1 WO2019041647 A1 WO 2019041647A1 CN 2017116511 W CN2017116511 W CN 2017116511W WO 2019041647 A1 WO2019041647 A1 WO 2019041647A1
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WO
WIPO (PCT)
Prior art keywords
base
stand according
rotating shaft
foot
reset
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Application number
PCT/CN2017/116511
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English (en)
French (fr)
Inventor
邓芳光
周平
王本贵
钟传锋
Original Assignee
广州视源电子科技股份有限公司
广州视睿电子科技有限公司
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Application filed by 广州视源电子科技股份有限公司, 广州视睿电子科技有限公司 filed Critical 广州视源电子科技股份有限公司
Publication of WO2019041647A1 publication Critical patent/WO2019041647A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B97/00—Furniture or accessories for furniture, not provided for in other groups of this subclass
    • A47B97/04—Easels or stands for blackboards or the like
    • 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
    • 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
    • F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
    • 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
    • F16M11/42—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters with arrangement for propelling the support stands on wheels

Definitions

  • the invention relates to the technical field of support accessories, in particular to a mobile tripod.
  • the tripod As an auxiliary device of the display device for supporting the display device.
  • the mobile stand As a movable support aid, the mobile stand is more widely used and more popular with users.
  • the object of the present invention is to provide a mobile tripod with simple and reasonable structure and convenient use, which can solve the problem that the tripod is easy to lean forward, and can avoid the excessive occupation of the base of the tripod base for the user or the surrounding walking crowd. the inconvenience caused.
  • a mobile stand provided by the present invention includes a base, a caster disposed at a bottom of the base, a support frame erected above the base, and a strip shape connected to the base An end portion of the foot support extending vertically downward from the base and bent to form an L-shaped ground end; the moving stand further comprising a base provided on the base for driving the foot support A vertical translation mechanism that moves up and down vertically.
  • the foot support is located at a side of the base, and the foot supports are at least two on the same side of the base.
  • the vertical translation mechanism includes an unlocking structure for triggering a vertical downward movement of the foot support relative to the caster, and a reset for driving the foot support to be vertically raised relative to the caster A mechanism and a locking structure for locking the foot support relative to the caster in a vertical movement limit.
  • the vertical translation mechanism includes the locking structure for locking the foot support in a vertical rise reset limit relative to the caster.
  • the base comprises a bottom plate vertically and fixedly connected to the caster and a lifting block vertically connected to the foot support, the lifting block having a vertical movement freedom with respect to the bottom plate;
  • the unlocking structure includes a lever-type first step for triggering a vertical downward movement of the lifting block relative to the bottom plate.
  • the caster is disposed at a bottom of the bottom plate, and the lift block is coupled to a side of the bottom plate.
  • the support frame is vertically fixedly connected to the lifting block.
  • the first step block is pivoted by a rotating shaft disposed on the lifting block, the first step block includes a first supporting end vertically connected to the bottom plate and fixedly connected to provide a footrest position The first foot end.
  • the unlocking structure includes a shaft seat fixed to the lifting block, a rotating shaft mounted on the shaft seat, and the first step block includes a lever arm sleeved on the rotating shaft, the lever The arm sets the first foot end and the first support end that abuts the bottom of the bottom plate.
  • the reset mechanism includes a second step for resetting the first step.
  • the second step block is sleeved on the rotating shaft, and the second step block comprises a second stepping end for providing a footrest position;
  • the first step block is fixed with a connecting rod,
  • the second step block is provided with a first guiding groove for allowing the connecting rod to pass through and a second guiding groove for allowing the rotating shaft to pass through, the length direction of the first guiding groove and the second guiding block
  • the length direction of the guide grooves is obliquely intersected.
  • the second step block includes a reset arm sleeved on the rotating shaft, the second step end is disposed on the reset arm, and the second step end is adjacent to the first foot end
  • the first guiding groove and the second guiding groove are disposed on the reset arm.
  • the first guiding groove and the second guiding groove are distributed in an inverted figure-eight shape.
  • the first step block includes two lever arms that are parallel to each other and relatively fixedly sleeved to the end of the rotating shaft, and the second step block is disposed between the two lever arms, the second step The block includes two reset arms that are parallel to each other and are relatively fixedly sleeved on the rotating shaft.
  • the lever arm and the reset arm are V-shaped, and the rotating shaft is connected to a middle portion of the lever arm and the reset arm.
  • the locking structure includes a limiting surface disposed at the first foot end, and the second foot end is at an upward reset stroke limit relative to the second foot end, the second foot step The end is abutted against the limiting surface to prevent the second step end from coming off the first foot end.
  • the locking structure includes a limiting structure disposed on the base for limiting a rotational stroke of the connecting rod about the rotating shaft.
  • the axle seat has a hollow cylindrical structure and is provided with a positioning hole for allowing the rotating shaft to pass therethrough, and the lifting block is provided with a through hole communicating with a middle portion of the shaft seat;
  • a columnar connecting body is fixed, and the connecting body is inserted into a middle portion of the shaft seat through a through hole in the lifting block, and the connecting body is provided with a positioning hole for allowing the rotating shaft to pass therethrough.
  • the axle seat limits the rotational travel of the link about the rotating shaft.
  • the movable foot frame provided by the above technical solution has the beneficial effects that: by designing the foot support with the L-shaped ground end, the problem that the tripod can be easily tilted can be solved, and the tripod can be avoided.
  • the switching mode is simple and reasonable, and the switching operation is convenient and quick.
  • FIG. 1 is a schematic view showing the use state of the moving stand of the present invention
  • Figure 2 is an exploded perspective view of the moving stand of the present invention
  • Figure 3 is a plan view of the moving stand of the present invention.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 3;
  • Figure 5 is a cross-sectional view taken along line B-B of Figure 3;
  • Figure 6 is a partial structural exploded view of the vertical translation mechanism of the moving stand of the present invention.
  • Figure 7 is a partial structural schematic view of the moving stand of the present invention.
  • Figure 8 is a partial exploded view of the moving stand of the present invention.
  • a mobile stand provided by the present invention includes a base 1, a caster 5 disposed at the bottom of the base 1, a support frame 2 erected above the base 1, and a connection bracket a strip-shaped foot support 3 on the base 1 , an end portion of the foot support 3 extending vertically downward from the base and bent to form an L-shaped ground end 31; the moving stand further includes a vertical translation mechanism 6 for driving the foot support 3 in the vertical direction of the base 1.
  • the mobile tripod based on the above technical features can not only solve the problem that the tripod is easy to lean forward, but also avoid the problem that the tripod base 1 is too large for the user or the surrounding walk by designing the footrest 3 having the L-shaped ground end. Inconvenience caused by the crowd; by designing a vertical translation mechanism for controlling the vertical lifting of the foot support, the switching between the moving state and the fixed state of the stand can be solved, when the foot support 3 is lowered In the state, the caster 5 is off the ground, the foot is supported on the ground to achieve its supporting and balancing function, and the tripod is in a fixed state. When the footrest 3 is in the raised state, the caster 5 is grounded. When the tripod is in a movable state, the switching mode is simple and reasonable, and the switching operation is convenient and quick.
  • the mobile stand can be used to support a wall-mounted display device 7 such as a liquid crystal television or a liquid crystal display.
  • the foot support 3 is located at a side of the base 1, and the foot support 3 is at least two located on the same side of the base 1.
  • the foot supports 3 are two on the same side of the base 1, and the vertical translation mechanism is two on the same side of the base 1.
  • the support frame 2 is fixedly connected to the base 1 , and the support frame 2 is provided with a hook structure 21 for hanging the display device 7 .
  • the support frame 2 is axially symmetrically spanned on the base 1.
  • the support frame is disposed in parallel with the side of the base on which the foot support 3 is provided.
  • one end of the leg brace 3 is fixedly connected to the base 1
  • the other end of the leg brace 3 is a ground end 31
  • the ground end 31 of the leg brace 3 is along the base 1 Side part cloth.
  • the number of the foot supports 3 may be four or other numbers, and the foot supports 3 may be respectively located at mutually parallel sides of the base 1.
  • the vertical translation mechanism 6 comprises an unlocking structure 6A for triggering a vertical downward movement of the foot support 3 relative to the caster 5 for driving the foot support 3 relative to
  • the caster 5 is vertically reset by a reset mechanism 6B and a locking structure 6C for locking the foot support relative to the caster in a vertical movement limit.
  • the vertical translation mechanism 6 includes the locking structure 6C for locking the footrest 3 in a vertical upward reset limit relative to the caster 5.
  • the base 1 includes a bottom plate 11 having a caster 5 at the bottom and a lifting block 12 connected to a side of the bottom plate 11.
  • the foot support 5 is fixedly connected to the lifting block 12,
  • the lifting block 12 has a vertical freedom of movement with respect to the bottom plate.
  • the lifting block 12 has and has only a vertical degree of freedom of movement with respect to the bottom plate 11.
  • the connection between the bottom plate 11 and the lifting block 12 can be achieved by the vertical arrangement of the grooves and the ribs, and the connection between the bottom and the vertical movement is achieved.
  • the connection between the bottom plate 11 and the lifting block 12 is not limited to the above-mentioned manner.
  • a beam 4 can be fixed to the bottom of the bottom plate 11, and the caster 5 can be mounted on the beam 4.
  • the unlocking structure 6A includes a lever-type first step 62 for triggering a vertical downward movement of the lift block 12 relative to the base plate 11.
  • the first step block 62 is pivoted by a rotating shaft 61 disposed on the lifting block 12, and the first step block 62 includes a first supporting end 622 vertically connected to the bottom plate 11 and is provided for providing The first foot end 623 of the footrest.
  • the unlocking structure 6A further includes a shaft seat 13 fixed to the lifting block 12, a rotating shaft 61 mounted on the shaft seat 13, and the first step block 62 includes a lever sleeved on the rotating shaft 61.
  • the arm 621 is disposed to abut the first supporting end 622 and the first step end 623 of the bottom of the bottom plate 11 .
  • the lever arm 621 has a degree of freedom of rotation about the rotation shaft 61.
  • the first step 62 of the lever type By designing the first step 62 of the lever type, the first support end 622 of the first step 62 abuts against the bottom of the bottom plate 11 when the operator applies the first pedal of the first step 62 End 623, when the first foot end 623 is moved downward, the first support end 622 moves in opposite directions, and the first lifting end 12 has a degree of freedom of movement relative to the bottom plate, the first a step 62 drives the bottom plate 11 to move vertically upward relative to the lifting block 12, that is, the lifting block 12 is vertically translated downward relative to the bottom plate 11, thereby driving and lifting
  • the foot brace 5 to which the block 12 is fixedly coupled is vertically translated downward relative to the bottom plate 11 until it is grounded such that the casters of the moving stand are off the ground and
  • the support frame 2 is fixedly coupled to the lifting block 12 such that the support frame 2 and the foot support 5 are simultaneously raised and lowered, and the load of the support frame 2 is directly applied to the lifting block. 12 on.
  • the load of the support frame 2 is directly applied to the foot support 5 fixedly coupled to the lift block 12, so that the balance of the force and the stability of the structure can be maintained.
  • the reset structure 6B includes a second step 63 for resetting the first step 62.
  • the second step 63 is sleeved on the rotating shaft 61.
  • the second step 63 includes a second step 633 for providing a footrest.
  • the first step 63 is fixed with a connecting rod. 624
  • the second step block 63 is provided with a first guiding groove 634 for allowing the connecting rod 624 to pass through, and a second guiding groove 635 for allowing the rotating shaft 61 to pass through, the first guiding groove
  • the longitudinal direction of the 634 intersects obliquely with the longitudinal direction of the second guide groove 635.
  • the second step block 63 includes a reset arm 631 that is sleeved on the rotating shaft 61.
  • the second arm end 633 is disposed on the reset arm 631, and the second step end 633 is adjacent to the first step
  • the stepping end 622 is disposed; the first guiding groove 634 and the second guiding groove 635 are disposed on the reset arm 631.
  • the longitudinal direction of the first guiding groove 634 intersects with the longitudinal direction of the second guiding groove 635 at an angle of 60°-120°.
  • the relative movement of the lever arm 621 and the reset arm 631 is restricted by the engagement of the link 624 and the rotating shaft 61 with the first guiding groove 634 and the second guiding groove 635.
  • the combination of the connecting rod 624, the rotating shaft 61 and the first guiding groove 634 and the second guiding groove 635 drives the reset arm 631 to Rotation of the lever arm 621 in a direction opposite to the rotation direction;
  • the combination of the link 624, the rotation shaft 61 and the first guide groove 634 and the second guide groove 635 drives the lever arm 621 rotates in a direction opposite to the rotation direction of the reset arm 631.
  • the displacement of the first step 62 is reset by the second step 63.
  • the first guiding groove 634 and the second guiding groove 635 are distributed in an inverted figure-eight shape.
  • the inverted eight-shaped distribution combination of the first guide groove and the second guide groove drives the reset arm 63 to the lever arm While the direction of rotation of 62 is rotated in the opposite direction, the second foot end 633 of the reset arm undergoes translation away from the center of the base in a plane parallel to the reset arm.
  • the first step block 62 includes two lever arms 621 that are parallel to each other and relatively fixedly sleeved to the end of the rotating shaft 61, and the second step block 63 is disposed between the two lever arms 621, and a distance between the first pedal end and the rotating shaft is greater than a distance between the second pedal end and the rotating shaft, and the second pedal end is used to block the second A limiting surface 625 from which the pedal end 633 is separated from the first foot end 623 is disposed inside the first foot end 623.
  • the second step block 63 includes two reset arms 631 that are parallel to each other and relatively fixedly sleeved on the rotating shaft 61.
  • One end of the two lever arms 621 is connected to the first supporting end 622 by a rod or a plate member, and the other ends of the two lever arms 621 are connected to the first foot end 623 by a rod or a plate;
  • the two resets One end of the arm 631 is connected to the second supporting end 632 by a rod or a plate, and the other ends of the two reset arms 631 are connected to the second step end 633 by a rod or a plate.
  • the lever arm 621 and the reset arm 631 are V-shaped, and the rotating shaft 61 is connected to the middle of the lever arm 621 and the reset arm 631.
  • the V-shaped structural design is more in line with the force requirements, and facilitates the operator's urging operation on the first foot end 623 and the second foot end 633.
  • the locking structure 6C includes a limiting surface 625 disposed on the first foot end 623, and the first foot end 623 is reset upward relative to the second foot end 633.
  • the second step 633 abuts against the limiting surface 625 to prevent the second step 633 from disengaging upwardly from the first step 623.
  • the locking structure 6C further includes a limiting structure 14 disposed on the base 1 for restricting a rotational stroke of the link 624 about the rotating shaft 61.
  • the limiting structure 14 limits the rotation of the link 624 about the rotating shaft 61 to reset the first step 62, that is, restricting the first step 62 around the The rotation of the rotating shaft 61 causes the first foot end 623 to rise and return to a rotation stroke.
  • the second step block 63 resets the first step block 62, that is, the operator applies a force to the second step end 633 to make the second leg
  • the first foot end 623 is reset upward by the cooperation of the connecting rod 624 and the rotating shaft 61 with the first guiding groove 634 and the second guiding groove 635.
  • a support end 622 is downwardly reset, and the first step 62 overcomes the load of the support frame 2 to drive the lifting block 12 to perform a vertical upward translational movement relative to the bottom plate 11 to drive the lifting block
  • the fixedly supported foot support 5 is vertically translated upwardly relative to the bottom plate 11 to its ground, the caster 5 is grounded, and the moving stand is switched to a movable state.
  • the link 624 abuts its limit structure, the first foot end 623 reaches its reset stroke limit.
  • the second step 633 is abutted on the first step 623. Specifically, the second step 633 is opposite to the limiting surface 625 of the first step 623.
  • the upper leg end 633 is restricted from moving upward by the limiting surface 625 to raise the caster 5 .
  • the operator can stop applying force to the second foot end 633.
  • the lifting block 12 has a tendency to move downward under the gravity of the support frame 2, so that the second foot end 633 has a tendency to move upward.
  • the first guiding groove 634 and the second guiding groove 635 are in an inverted figure-eight shape, when the second step end 633 of the reset arm 631 is displaced upward in the vertical direction, the second leg The step 633 simultaneously performs translation away from the center of the base on a plane parallel to the reset arm.
  • the limiting surface 625 of the first foot end 623 is designed, and the limiting surface 625 is used for the upward resetting of the first foot end 623 relative to the second foot end 633.
  • the second stepping end 633 can be restricted from being displaced from the center of the base on a plane parallel to the reset arm, thereby preventing the second stepped end 633 from being disengaged from the first pedal
  • the end 623 abuts the second stepped end 633 against the first stepped end 623 to maintain a balance between the bottom plate 11 and the lifting block 12 to maintain a stable state.
  • the operator applies a force to the first foot end 623 to lower the first foot end 623, and breaks the balance of the force, so that the second foot end 633 Out of the restriction of the stop surface 625, an upward movement relative to the first foot end 623 occurs.
  • the bottom of the base 1 is provided with a shaft seat 13 for mounting the rotating shaft 61.
  • the shaft seat 13 has a hollow cylindrical structure and is provided with a positioning hole for allowing the rotating shaft 61 to pass therethrough.
  • the base 1 is provided with a through hole 142 communicating with the middle of the shaft seat 13; a fixed connection 32 is fixed on the foot support 3, and the connecting body 32 is inserted through the through hole in the base 1.
  • the connecting body 32 is provided with a positioning hole 141 for allowing the rotating shaft 61 to pass therethrough.
  • the rotating shaft 61 passes through the positioning hole 141 to fix the connecting body 32 in the shaft seat 13.
  • the axle seat 13 can serve as a limiting structure 14 of the rotating rod 624, and the connecting rod 624 is rotated around the rotating shaft 61 to make the first A stepping motion of the step 62 is reset.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rehabilitation Tools (AREA)
  • Invalid Beds And Related Equipment (AREA)

Abstract

一种移动脚架，包括底座(1)、设于底座底部的脚轮(5)、竖立于底座上方的支撑架(2)及连接于底座上的呈条片形的脚撑(3)，脚撑的一端部自底座竖直向下延伸并弯折形成L形的着地端(31)；移动脚架还包括设于底座的用于驱动脚撑沿竖向升降的竖向平移机构(6)。该移动脚架通过竖向平移机构实现在移动状态和固定状态之间的切换，既能解决脚架容易前倾的问题，又能避免脚架底座占地面积过大对使用者或周围行人造成的不便。

Description

一种移动脚架 技术领域
本发明涉及支撑辅件技术领域，尤其涉及一种移动脚架。
背景技术
在一些需要将显示设备安设于室外或者其他不便固定安装显示设备的场合时，往往需要使用脚架作为显示设备的辅助装置，用来支撑显示设备。移动脚架作为一种可移动的支撑辅助装置，其适用范围更广，更加受到用户的欢迎。
目前市面上的移动脚架一般采用轮式移动脚架。对于应用于大尺寸显示设备的移动脚架，为了避免其向前倾倒，往往需要设计较大占地面积的脚架，将脚架的四个轮子的间距设计得较大，以使移动脚架的重心下移。但是这种结构的移动脚架的占地面积大，移动不便，在移动过程中，容易对移动操作者或者周围行走人群的脚部造成磕碰；即使在显示设备被固定的状态下，仍然会影响人群在显示设备屏幕前方的通行范围，具有安全隐患。而且移动脚架的边缘距离显示设备的屏幕较远，在一些需要针对显示设备的屏幕进行讲演的情况下或者需要对显示设备进行维护维修的情况下，均有所不便。
因此，设计一种既能够将显示设备有效定位，又具有较小占地面积的移动脚架是非常必要的。
发明内容
本发明的目的是提供一种结构简单合理、使用方便的移动脚架，既能解决脚架容易前倾的问题，又能避免脚架底座的占地面积过大对使用者或者周围行走人群所造成的不便。
为实现上述目的，本发明所提供的一种移动脚架，其包括底座、设于所述底座底部的脚轮、竖立于所述底座上方的支撑架及连接于所 述底座上的呈条片形的脚撑，所述脚撑的一端部自所述底座竖直向下延伸并弯折形成L形的着地端；所述移动脚架还包括设于所述底座的用于驱动所述脚撑沿竖向升降的竖向平移机构。
优选地，所述脚撑位于所述底座的侧部，所述脚撑为位于所述底座同一侧的至少两个。
优选地，所述竖向平移机构包括用于触发所述脚撑相对于所述脚轮沿竖向下降运动的解锁结构、用于驱动所述脚撑相对于所述脚轮沿竖向上升复位的复位机构及用于锁定所述脚撑相对于所述脚轮沿竖向运动极限的锁定结构。
优选地，所述竖向平移机构包括用于锁定所述脚撑相对于所述脚轮沿竖向上升复位极限的所述锁定结构。
优选地，所述底座包括与所述脚轮竖向相对固定连接的底板及与所述脚撑竖向相对固定连接的升降块，所述升降块具有相对于所述底板的竖向运动自由度；所述解锁结构包括用于触发所述升降块相对于所述底板沿竖向下降运动的杠杆式的第一踏块。
优选地，所述底板的底部设置所述脚轮，所述升降块连接于所述底板的侧部。
优选地，所述支撑架与所述升降块竖向固定连接。
优选地，所述第一踏块以设于所述升降块上的转轴为支点，所述第一踏块包括与所述底板竖向相对固定连接的第一支撑端及用于提供搁脚位的第一脚踏端。
优选地，所述解锁结构包括固定于所述升降块上的轴座、安装于所述轴座上的转轴，所述第一踏块包括套接于所述转轴上的杠杆臂，所述杠杆臂设置所述第一脚踏端及抵接于所述底板底部的所述第一支撑端。
优选地，所述复位机构包括用于对所述第一踏块进行复位的第二踏块。
优选地，所述第二踏块套接于所述转轴上，所述第二踏块包括用于提供搁脚位的第二脚踏端；所述第一踏块上固定有连杆，所述第二踏块上设有用于允许所述连杆穿过的第一导槽及用于允许所述转轴穿过的第二导槽，所述第一导槽的长度方向与所述第二导槽的长度方向倾斜相交。
优选地，所述第二踏块包括套接于所述转轴上的复位臂，所述复位臂上设置所述第二脚踏端，所述第二脚踏端靠近所述第一脚踏端设置；所述复位臂上设置所述第一导槽及所述第二导槽。
优选地，所述第一导槽与所述第二导槽呈倒八字形分布。
优选地，所述第一踏块包括相互平行且相对固定地套接于所述转轴端部的两杠杆臂，所述第二踏块设于所述两杠杆臂之间，所述第二踏块包括相互平行且相对固定地套接于所述转轴上的两复位臂。
优选地，所述杠杆臂及所述复位臂呈V形，所述转轴连接于所述杠杆臂及所述复位臂的中部。
优选地，所述锁定结构包括设于所述第一脚踏端的限位面，当所述第一脚踏端处于相对所述第二脚踏端的向上复位的行程极限，所述第二脚踏端抵于所述限位面以阻止所述第二脚踏端向上脱离所述第一脚踏端。
优选地，所述锁定结构包括设于所述底座上的用于限制所述连杆绕所述转轴的旋转行程的限位结构。
优选地，所述轴座呈中空的筒形结构并设有用于允许所述转轴穿过的定位孔，所述升降块上设有与所述轴座中部相通的通孔；所述脚撑上固定有柱状的连接体，所述连接体经所述升降块上的通孔插入所述轴座中部，所述连接体上设有用于允许所述转轴穿过的定位孔。
优选地，所述轴座限制所述连杆绕所述转轴的旋转行程。
上述技术方案所提供的一种移动脚架，与现有技术相比，其有益效果包括：通过设计具有L形着地端的脚撑，既能解决脚架容易前倾 的问题，又能避免脚架底座的占地面积过大对使用者或者周围行走人群所造成的不便；通过设计用于控制所述脚撑沿竖向升降的竖向平移机构，能够解决所述脚架在移动状态和固定状态之间的切换，当所述脚撑在降低状态下，所述脚轮离地，所述脚撑着地以实现其支撑和平衡功能，此时脚架处于固定状态，当所述脚撑在升高状态下，所述脚轮着地，此时脚架处于可移动状态，此种切换方式简单合理，且切换操作方便快捷。
附图说明
图1是本发明的移动脚架的使用状态示意图；
图2是本发明的移动脚架的结构分解图；
图3是本发明的移动脚架的俯视图；
图4是图3中的A-A截面剖视图；
图5是图3中的B-B截面剖视图；
图6是本发明的移动脚架的竖向平移机构的局部结构分解图；
图7是本发明的移动脚架的局部结构示意图；
图8是本发明的移动脚架的局部结构分解图。
其中，1-底座，11-底板，12-升降块，13-轴座，14-限位结构，141-定位孔，142-通孔，2-支撑架，21-挂钩结构，3-脚撑，31-着地端，32-连接体，4-横梁，5-脚轮，6-竖向平移机构，6A-解锁结构，6B-复位结构，6C-锁定结构，61-转轴，62-第一踏块，621-杠杆臂，622-第一支撑端，623-第一脚踏端，624-连杆，625-限位面，63-第二踏块，631-复位臂，632-第二支撑端，633-第二脚踏端，634-第一导槽，635-第二导槽，7-显示设备。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
请参阅附图1-8，本发明所提供的一种移动脚架，其包括底座1、 设于所述底座1底部的脚轮5、竖立于所述底座1上方的支撑架2及连接于所述底座1上的呈条片形的脚撑3，所述脚撑3的一端部自所述底座竖直向下延伸并弯折形成L形的着地端31；所述移动脚架还包括设于所述底座1的用于驱动所述脚撑3沿竖向升降的竖向平移机构6。
基于上述技术特征的移动脚架，通过设计具有L形着地端的脚撑3，既能解决脚架容易前倾的问题，又能避免脚架底座1的占地面积过大对使用者或者周围行走人群所造成的不便；通过设计用于控制所述脚撑沿竖向升降的竖向平移机构，能够解决所述脚架在移动状态和固定状态之间的切换，当所述脚撑3在降低状态下，所述脚轮5离地，所述脚撑着地以实现其支撑和平衡功能，此时脚架处于固定状态，当所述脚撑3在升高状态下，所述脚轮5着地，此时脚架处于可移动状态，此种切换方式简单合理，且切换操作方便快捷。本移动脚架可用于支撑液晶电视、液晶显示器等壁挂式显示设备7。
所述脚撑3位于所述底座1的侧部，所述脚撑3为位于所述底座1同一侧的至少两个。在本实施例中，所述脚撑3为位于所述底座1同一侧的两个，所述竖向平移机构为位于所述底座1同一侧的两个。
所述支撑架2固定连接于所述底座1上，所述支撑架2上设有用于悬挂显示设备7的挂钩结构21。所述支撑架2呈轴对称地跨设于所述底座1上，较佳地，所述支撑架与所述底座的设有脚撑3的侧边平行地设置。在本实施例中，所述脚撑3的一端与所述底座1固定连接，所述脚撑3的另一端为着地端31，所述脚撑3的着地端31沿所述底座1的一侧部分布。
在本发明的另一种实施例中，所述脚撑3的数量可为四个或者其他数量，所述脚撑3可分别位于所述底座1的相互平行的两侧部。
在本发明的实施例中，所述竖向平移机构6包括用于触发所述脚撑3相对于所述脚轮5沿竖向下降运动的解锁结构6A、用于驱动所 述脚撑3相对于所述脚轮5沿竖向上升复位的复位机构6B及用于锁定所述脚撑相对于所述脚轮沿竖向运动极限的锁定结构6C。具体地，所述竖向平移机构6包括用于锁定所述脚撑3相对于所述脚轮5沿竖向上升复位极限的所述锁定结构6C。
请参阅附图1-5，所述底座1包括底部设有脚轮5的底板11及连接于所述底板11侧部的升降块12，所述脚撑5与所述升降块12固定连接，所述升降块12具有相对于所述底板的竖向运动自由度。在本实施例中，所述升降块12相对于所述底板11有且仅有竖向的运动自由度。具体地，所述底板11与所述升降块12之间可通过沿竖向设置的凹槽和凸肋配合的方式实现相互之间有且仅有竖向的运动自由度的连接，但是所述底板11与所述升降块12之间的连接不限于上述所提及的方式。所述底板11的底部可固定设有横梁4，所述脚轮5可安装于所述横梁4上。
请参阅附图4-6，所述解锁结构6A包括用于触发所述升降块12相对于所述底板11沿竖向下降运动的杠杆式的第一踏块62。所述第一踏块62以设于所述升降块12上的转轴61为支点，所述第一踏块62包括与所述底板11竖向相对固定连接的第一支撑端622及用于提供搁脚位的第一脚踏端623。所述解锁结构6A还包括固定于所述升降块12上的轴座13、安装于所述轴座13上的转轴61，所述第一踏块62包括套接于所述转轴61上的杠杆臂621，所述杠杆臂621设置抵接于所述底板11底部的所述第一支撑端622及所述第一脚踏端623。所述杠杆臂621具有绕所述转轴61旋转的自由度。通过设计杠杆式的第一踏块62，所述第一踏块62的第一支撑端622抵于所述底板11底部，当操作者施力于所述第一踏块62的第一脚踏端623，使所述第一脚踏端623向下移动时，所述第一支撑端622发生相反运动，由于所述升降块12具有相对于所述底板的竖向运动自由度，所述第一踏块62驱动所述底板11发生相对于所述升降块12竖直向上平移的 运动，亦即使得所述升降块12相对于所述底板11竖直向下平移，从而驱动与所述升降块12固定连接的所述脚撑5相对于所述底板11竖直向下平移直至其着地，使得所述移动脚架的脚轮离地，所述移动脚架能够被定位。
在本实施例中，所述支撑架2与所述升降块12固定连接，使得所述支撑架2与所述脚撑5同步升降，且所述支撑架2的荷载直接施加于所述升降块12上。当所述脚轮5离地后，所述支撑架2的荷载直接施加在与所述升降块12固定连接的脚撑5，从而能够保持受力的平衡以及结构的稳定。
请参阅附图4-6，所述复位结构6B包括用于对所述第一踏块62进行复位的第二踏块63。所述第二踏块63套接于所述转轴61上，所述第二踏块63包括用于提供搁脚位的第二脚踏端633；所述第一踏块63上固定有连杆624，所述第二踏块63上设有用于允许所述连杆624穿过的第一导槽634及用于允许所述转轴61穿过的第二导槽635，所述第一导槽634的长度方向与所述第二导槽635的长度方向倾斜相交。所述第二踏块63包括套接于所述转轴61上的复位臂631，所述复位臂631上设置所述第二脚踏端633，所述第二脚踏端633靠近所述第一脚踏端622设置；所述复位臂631上设置所述第一导槽634及所述第二导槽635。较佳地，所述第一导槽634的长度方向与所述第二导槽635的长度方向相交成60°-120°的夹角。通过所述连杆624、转轴61与所述第一导槽634、第二导槽635的配合，限制所述杠杆臂621与所述复位臂631的相对运动。具体地，当所述杠杆臂621绕所述转轴61旋转，所述连杆624、转轴61与所述第一导槽634、第二导槽635的组合驱使所述复位臂631以与所述杠杆臂621的旋转方向相反的方向发生旋转；当所述复位臂631旋转时，所述连杆624、转轴61与所述第一导槽634、第二导槽635的组合驱使所述杠杆臂621以与所述复位臂631的旋转方向相反的方向发生旋转。根据这一 原理，利用所述第二踏块63对所述第一踏块62的位移进行复位。
请参阅附图5，所述第一导槽634与所述第二导槽635呈倒八字形分布。当所述杠杆臂621的第一脚踏端623在竖直方向发生向上位移，所述第一导槽及第二导槽的倒八字形分布组合驱使所述复位臂63以与所述杠杆臂62的旋转方向相反的方向发生旋转的同时，所述复位臂的第二脚踏端633在与所述复位臂平行的平面上发生远离底座中心的平移。
请参阅附图6，作为本发明的较佳实施例，所述第一踏块62包括相互平行且相对固定地套接于所述转轴61端部的两杠杆臂621，所述第二踏块63设于所述两杠杆臂621之间，且所述第一脚踏端与所述转轴的距离大于所述第二脚踏端与所述转轴的距离，所述用于阻止所述第二脚踏端633向上脱离所述第一脚踏端623的限位面625设于所述第一脚踏端623的内侧。所述第二踏块63包括相互平行且相对固定地套接于所述转轴61上的两复位臂631。所述两杠杆臂621的一端通过杆件或板件连接成第一支撑端622，所述两杠杆臂621的另一端通过杆件或板件连接成第一脚踏端623；所述两复位臂631的一端通过杆件或板件连接成第二支撑端632，所述两复位臂631的另一端通过杆件或板件连接成第二脚踏端633。
所述杠杆臂621及所述复位臂631呈V形，所述转轴61连接于所述杠杆臂621及所述复位臂631的中部。V形的结构设计更加符合受力要求，并且便利于操作者对第一脚踏端623和第二脚踏端633的施力操作。
请参阅附图5，所述锁定结构6C包括设于所述第一脚踏端623的限位面625，当所述第一脚踏端623处于相对所述第二脚踏端633向上复位的行程极限，所述第二脚踏端633抵于所述限位面625，得以阻止所述第二脚踏端633向上脱离所述第一脚踏端623。
所述锁定结构6C还包括设于所述底座1上的用于限制所述连杆 624绕所述转轴61的旋转行程的限位结构14。在本实施例中，所述限位结构14限制所述连杆624绕所述转轴61旋转而使所述第一踏块62复位的旋转行程，即限制所述第一踏块62绕所述转轴61旋转使所述第一脚踏端623上升复位的旋转行程。
基于上述技术特征的移动脚架，当所述第二踏块63对所述第一踏块62进行复位时，即操作者施力于所述第二脚踏端633，使所述第二脚踏端633向下移动时，在所述连杆624、转轴61与所述第一导槽634、第二导槽635的配合作用下，所述第一脚踏端623向上复位，所述第一支撑端622向下复位，所述第一踏块62克服所述支撑架2的荷载驱动所述升降块12发生相对于所述底板11竖直向上平移的运动，从而驱动与所述升降块12固定连接的所述脚撑5相对于所述底板11竖直向上平移至其离地，所述脚轮5着地，所述移动脚架切换至可移动状态。至所述连杆624抵于其限位结构上，所述第一脚踏端623到达其复位行程极限。此时，所述第二脚踏端633抵于所述第一脚踏端623上，具体地，所述第二脚踏端633抵于所述第一脚踏端623的限位面625上，通过所述限位面625限制所述第二脚踏端633向上移动使脚轮5升高。此时，操作者可停止施力于所述第二脚踏端633。当操作者停止施力后，所述升降块12在支撑架2的重力作用下，具有向下移动的趋势，从而使得所述第二脚踏端633具有向上移动的趋势。然而由于所述第一导槽634与所述第二导槽635呈倒八字形分布，当所述复位臂631的第二脚踏端633在竖直方向发生向上位移时，所述第二脚踏端633同时在与所述复位臂平行的平面上发生远离底座中心的平移。根据这一原理，设计所述第一脚踏端623的限位面625，所述限位面625用于当所述第一脚踏端623处于相对所述第二脚踏端633的向上复位的行程极限时，能够限制所述第二脚踏端633在与所述复位臂平行的平面上发生远离底座中心的平移，从而阻止所述第二脚踏端633向上脱离所述第一脚踏端623，使所述第二 脚踏端633抵接于所述第一脚踏端623，保持力的平衡，使所述底板11与升降块12之间能够保持稳定的状态。而当需要固定所述移动脚架时，操作者施力于所述第一脚踏端623，使所述第一脚踏端623下降，打破力的平衡，从而所述第二脚踏端633脱离所述限位面625的限制，发生相对所述第一脚踏端623的向上运动。
请参阅附图6，所述底座1的底部设有用于安装所述转轴61的轴座13，所述轴座13呈中空的筒形结构并设有用于允许所述转轴61穿过的定位孔141。所述底座1设有与所述轴座13中部相通的通孔142；所述脚撑3上固定设有柱状的连接体32，所述连接体32经所述底座1上的通孔插入所述轴座13中部，所述连接体32上设有用于允许所述转轴61穿过的定位孔141。所述转轴61穿过所述定位孔141，使所述连接体32固定于所述轴座13中。请参阅附图5，作为本发明的较佳实施例，所述轴座13可作为所述转杆624的限位结构14，限制所述连杆624绕所述转轴61旋转而使所述第一踏块62复位的旋转行程。
以上仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本发明的保护范围。

Claims (19)

  1. 一种移动脚架，其特征在于，其包括底座、设于所述底座底部的脚轮、竖立于所述底座上方的支撑架及连接于所述底座上的呈条片形的脚撑，所述脚撑的一端部自所述底座竖直向下延伸并弯折形成L形的着地端；所述移动脚架还包括设于所述底座的用于驱动所述脚撑沿竖向升降的竖向平移机构。
  2. 如权利要求1所述的移动脚架，其特征在于，所述脚撑位于所述底座的侧部，所述脚撑为位于所述底座同一侧的至少两个。
  3. 如权利要求1所述的移动脚架，其特征在于，所述竖向平移机构包括用于触发所述脚撑相对于所述脚轮沿竖向下降运动的解锁结构、用于驱动所述脚撑相对于所述脚轮沿竖向上升复位的复位机构及用于锁定所述脚撑相对于所述脚轮沿竖向运动极限的锁定结构。
  4. 如权利要求3所述的移动脚架，其特征在于，所述竖向平移机构包括用于锁定所述脚撑相对于所述脚轮沿竖向上升复位极限的所述锁定结构。
  5. 如权利要求4所述的移动脚架，其特征在于，所述底座包括与所述脚轮竖向相对固定连接的底板及与所述脚撑竖向相对固定连接的升降块，所述升降块具有相对于所述底板的竖向运动自由度；所述解锁结构包括用于触发所述升降块相对于所述底板沿竖向下降运动的杠杆式的第一踏块。
  6. 如权利要求5所述的移动脚架，其特征在于，所述底板的底部设置所述脚轮，所述升降块连接于所述底板的侧部。
  7. 如权利要求5所述的移动脚架，其特征在于，所述支撑架与所述升降块竖向固定连接。
  8. 如权利要求5所述的移动脚架，其特征在于，所述第一踏块以设于所述升降块上的转轴为支点，所述第一踏块包括与所述底板竖向相对固定连接的第一支撑端及用于提供搁脚位的第一脚踏端。
  9. 如权利要求8所述的移动脚架，其特征在于，所述解锁结构包括固定于所述升降块上的轴座、安装于所述轴座上的转轴，所述第一踏块包括套接于所述转轴上的杠杆臂，所述杠杆臂设置所述第一脚踏端及抵接于所述底板底部的所述第一支撑端。
  10. 如权利要求8所述的移动脚架，其特征在于，所述复位机构包括用于对所述第一踏块进行复位的第二踏块。
  11. 如权利要求10所述的移动脚架，其特征在于，所述第二踏块套接于所述转轴上，所述第二踏块包括用于提供搁脚位的第二脚踏端；所述第一踏块上固定有连杆，所述第二踏块上设有用于允许所述连杆穿过的第一导槽及用于允许所述转轴穿过的第二导槽，所述第一导槽的长度方向与所述第二导槽的长度方向倾斜相交。
  12. 如权利要求11所述的移动脚架，其特征在于，所述第二踏块包括套接于所述转轴上的复位臂，所述复位臂上设置所述第二脚踏端，所述第二脚踏端靠近所述第一脚踏端设置；所述复位臂上设置所述第一导槽及所述第二导槽。
  13. 如权利要求11所述的移动脚架，其特征在于，所述第一导槽与所述第二导槽呈倒八字形分布。
  14. 如权利要求11所述的移动脚架，其特征在于，所述第一踏块包括相互平行且相对固定地套接于所述转轴端部的两杠杆臂，所述第二踏块设于所述两杠杆臂之间，所述第二踏块包括相互平行且相对固定地套接于所述转轴上的两复位臂。
  15. 如权利要求14所述的移动脚架，其特征在于，所述杠杆臂及所述复位臂呈V形，所述转轴连接于所述杠杆臂及所述复位臂的中部。
  16. 如权利要求11-15中任一项所述的移动脚架，其特征在于，所述锁定结构包括设于所述第一脚踏端的限位面，当所述第一脚踏端处于相对所述第二脚踏端的向上复位的行程极限，所述第二脚踏端抵 于所述限位面以阻止所述第二脚踏端向上脱离所述第一脚踏端。
  17. 如权利要求16所述的移动脚架，其特征在于，所述锁定结构包括设于所述底座上的用于限制所述连杆绕所述转轴的旋转行程的限位结构。
  18. 如权利要求17所述的移动脚架，其特征在于，所述轴座呈中空的筒形结构并设有用于允许所述转轴穿过的定位孔，所述升降块上设有与所述轴座中部相通的通孔；所述脚撑上固定有柱状的连接体，所述连接体经所述升降块上的通孔插入所述轴座中部，所述连接体上设有用于允许所述转轴穿过的定位孔。
  19. 如权利要求18所述的移动脚架，其特征在于，所述轴座限制所述连杆绕所述转轴的旋转行程。
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CN108715182B (zh) * 2018-05-31 2024-02-20 广州视源电子科技股份有限公司 一种底座锁刹机构
CN109168776B (zh) * 2018-09-12 2020-10-27 常州大学 一种防倾倒防移动的植物生长实验架装置
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