WO2019119920A1 - 升降工作台 - Google Patents

升降工作台 Download PDF

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Publication number
WO2019119920A1
WO2019119920A1 PCT/CN2018/108313 CN2018108313W WO2019119920A1 WO 2019119920 A1 WO2019119920 A1 WO 2019119920A1 CN 2018108313 W CN2018108313 W CN 2018108313W WO 2019119920 A1 WO2019119920 A1 WO 2019119920A1
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WO
WIPO (PCT)
Prior art keywords
motor
leg
support
base
hinged
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PCT/CN2018/108313
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English (en)
French (fr)
Inventor
项乐宏
蒋领辉
陈旭峰
Original Assignee
乐歌人体工学科技股份有限公司
Priority date (The priority date 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 date listed.)
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Application filed by 乐歌人体工学科技股份有限公司 filed Critical 乐歌人体工学科技股份有限公司
Priority to CN201880004474.XA priority Critical patent/CN110325077B/zh
Priority to AU2018388926A priority patent/AU2018388926B2/en
Publication of WO2019119920A1 publication Critical patent/WO2019119920A1/zh
Priority to US16/595,477 priority patent/US10986918B2/en

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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
    • A47B23/00—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else
    • A47B23/04—Bed-tables; Trays; Reading-racks; Book-rests, i.e. items used in combination with something else supported from table, floor or wall
    • A47B23/042—Book-rests or note-book holders resting on tables
    • A47B23/043—Book-rests or note-book holders resting on tables adjustable, foldable
    • 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
    • A47B9/00—Tables with tops of variable height
    • A47B9/16—Tables with tops of variable height with means for, or adapted for, inclining the legs of the table for varying the height of the top, e.g. with adjustable cross legs
    • 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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/02—Tables or desks for office equipment, e.g. typewriters, keyboards with vertical adjustable parts
    • 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
    • A47B21/00—Tables or desks for office equipment, e.g. typewriters, keyboards
    • A47B21/04—Tables or desks for office equipment, e.g. typewriters, keyboards characterised by means for holding or fastening typewriters or computer equipment
    • 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
    • A47B2200/00—General construction of tables or desks
    • A47B2200/0035—Tables or desks with features relating to adjustability or folding
    • A47B2200/005—Leg adjustment
    • A47B2200/0056—Leg adjustment with a motor, e.g. an electric motor

Definitions

  • the invention relates to the technical field of furniture, in particular to a lifting workbench.
  • the lifting platform placed on the desktop has gradually become popular in people's daily life, and is mostly used in various fields such as study, office and entertainment. It usually comprises a table top, a base and a lifting support frame.
  • the table board is connected to the base by a lifting support frame, and the base is placed on the table top, and the driving device for driving the lifting support frame to realize the electric lifting function is usually a motor.
  • an electric lifting platform which includes a stage, a bottom plate, a transmission assembly and at least one set of lifting components, a carrier and The bottom plate is respectively connected to the upper and lower ends of the lifting assembly, and the lifting assembly comprises two first supporting arms and a second supporting arm which are hingedly connected to each other.
  • the transmission component comprises a motor and a sliding plate, and a spindle is connected to the main shaft of the motor, and the sliding plate is slidably connected On the bottom plate, the lead screw is connected to the slide plate, and two ends of the first support arm are respectively hinged on the stage and the slide plate.
  • the driving force is always at the lower end of the flat arm of the bottom plate, and the support arm slides horizontally along the bottom plate while the bottom is horizontally oscillated, the force at the bottom end of the support arm changes when swinging, especially when the support arm just starts to slide.
  • the driving force for driving its sliding is the largest. Therefore, the output power of the motor should be large enough to smoothly push the movement of the support arm. In this way, if a sufficient driving force is selected on the one hand, the specifications of the motor should be selected.
  • the corresponding volume is large, and the space occupied by the lifting table is also large, resulting in an increase in the weight of the entire lifting platform and an increase in the volume of the components, which in turn makes the lifting platform more cumbersome; on the other hand, if only If the driving force of the support arm can be pushed, the motor specification is small, but the driving force is insufficient, causing the lifting platform to rise and struggle, or even rising. On the other hand, when the stage stays at any position, there is a lack of support. The locking structure of the arm, the total weight of the object attached to the stage will press the support arm back, causing the stage to descend, so Difference lifts stability.
  • the technical problem to be solved by the present invention is to provide an elevating workbench which has an auxiliary force for the support arm, thereby lifting and lifting lightly, without increasing the specification of the motor, and staying at any position and having high stability.
  • the present invention provides an elevating workbench including a table top, a table support frame connected to the table top, a base, an X-shaped support leg for connecting the table support frame and the base, and a driving X-shaped support.
  • a power driving device that opens or closes the legs to realize lifting of the table top;
  • the power driving device is coupled to the table support frame, and the power output end is coupled to the X-shaped supporting legs;
  • the lifting table further includes an X-shaped supporting leg A diagonal link mechanism that always applies an oblique force, the one end of which is connected to the X-shaped support leg at one end and to the power drive device at the other end.
  • the oblique link mechanism comprises a long link and two short links, one end of the long link is hinged to the slider, and the other end is simultaneously hinged with one end of the two short links, and the other end of the two short links is
  • the X-shaped support legs are fixedly connected; the long link always forms an angle with the power output direction of the power drive device.
  • the power driving device comprises a motor connecting seat, a motor, a screw rod and a slider, the motor connecting seat is connected to the desktop board, the motor is fixedly connected to the motor connecting seat, and the output shaft of the motor is connected with one end of the screw rod through a transmission mechanism, The slider is threaded onto the lead screw and the other end of the lead screw is rotatably coupled to the table support frame.
  • the table support frame comprises two beams and two guide rails, the two beams are respectively connected to the front and rear sides of the table top, the motor is connected at one end of the beam, and the two guide rails are respectively connected to the two beams away from the motor. One end.
  • the X-shaped support leg comprises two sets of X-shaped support groups, each set of X-shaped support groups is formed by X-shaped joints of the first leg and the second leg; each set of X-shaped support groups has four support points a first support point connected to the table support frame at one end of the first leg, a second support point connected to the table support frame at one end of the second leg, and the other end of the first leg connected to the base a fourth support point and a fourth support point connected to the base at the other end of the second leg; the second support points of the two sets of X-shaped support groups are connected by a second connecting shaft, and the fourth set of the X-shaped support group
  • the support points are connected by a fourth connecting shaft; the two ends of the second connecting shaft are respectively hinged and slidably connected in the two guide rails, and the two ends of the fourth connecting shaft are respectively hinged and slidably connected to the base, and the first supporting point is hinged On a beam near one end of the motor, a third support point is
  • the first support points of the two sets of X-shaped support groups are connected by a first connecting shaft, and the two ends of the first connecting shaft are respectively hinged with the two beams, and the ends of the two first legs are fixedly connected
  • a connecting shaft is on the outer circumferential wall.
  • An intermediate beam is disposed between the two ends of the two beams.
  • the two ends of the intermediate beam are respectively fixedly connected with the two beams.
  • the middle beam is connected with a hanging plate, and the other end of the screw rod is hinged with the hanging plate.
  • the screw rod and the slider are externally provided with a cover, and the end of the cover is fixedly connected with the hanging plate.
  • the bottom of the motor is equipped with a tact switch that prevents the motor from colliding with the base when the table top is lowered to the lowest position, and the contact of the tact switch faces the base.
  • the present invention has the following advantages over the prior art:
  • An oblique force therefore, when the lifting platform starts to rise from the lowest position, it assists the driving force of the motor, effectively reducing the starting force of the motor when the table top is at the low end, thereby maximizing the motor's Efficacy, therefore, without increasing the output power of the motor, that is, reducing the size of the motor, reducing the size and weight, and then making the electric lift table lighter; meanwhile, when the table top stays in any position, The action of the inclined link mechanism, the force is decomposed into a vertical upward supporting force, so that the support effect of the X-shaped supporting legs on the table top is better and more stable;
  • the inclined link mechanism adopts the combined structure of long connecting rod and short connecting rod, which has simple structure, stable motion and higher efficiency of transmitting force;
  • FIG. 1 is a schematic structural view of a lifting work platform of the present invention.
  • Figure 2 is a schematic view showing the structure of the lifting table of the present invention when it is inverted.
  • Figure 3 is a partial structural view of the elevating workbench of the present invention.
  • Figure 4 is a partial structural view of the elevating workbench of the present invention.
  • Figure 5 is a side elevational view showing the elevating table of the present invention.
  • Figure 6 is a schematic view showing the structure of the inclined link mechanism of the lifting table of the present invention from the collapsed state to the open state.
  • the structure diagram of the lifting table of the present invention shown in FIG. 1 to FIG. 6 includes a table top board 1, a table board supporting frame connected to the table board 1, a base 2, and an X for connecting the table board supporting frame and the base 2.
  • the support legs and the power drive device that drives the X-shaped support legs to open or close to achieve the lifting and lowering of the table top 1.
  • the power drive is coupled to the table support frame and the power output is coupled to the X-shaped support leg.
  • the elevating table further includes a diagonal link mechanism that always applies an oblique force to the X-shaped support leg, the oblique link mechanism being coupled to the X-shaped support leg at one end and to the power drive at the other end.
  • the oblique link mechanism comprises a long link 5 and two short links 4, one end of which is hinged to the output end of the motor drive device, and the other end is hinged to one end of the two short links 4, The other end of the short link 4 is fixedly coupled to the X-shaped support leg.
  • the long link 5 always forms an angle with the power output direction of the power drive.
  • the power driving device includes a motor connecting base 4, a motor 3, a lead screw 16 and a slider 17.
  • the motor connecting base 4 is connected to the desktop board 1.
  • the motor 3 is fixedly connected to the motor connecting base 4, and the output shaft of the motor 3 passes.
  • the transmission mechanism is coupled to one end of the lead screw 16, and the slider 17 is screwed to the lead screw 16.
  • the other end of the lead screw 16 is rotatably coupled to the table support frame, and the slider 17 is simultaneously hinged to one end of the long link 5.
  • the table support frame comprises two cross beams 6 and two guide rails 15, respectively connected to the front and rear sides of the table top 1.
  • the motor 3 is connected to one end of the cross beam 6, and the two guide rails 15 are respectively connected Keep away from one end of the two beams 6 of the motor 3.
  • the X-shaped support leg includes two sets of X-shaped support groups, and each set of X-shaped support sets is formed by an X-shaped cross between the first leg 11 and the second leg 12.
  • Each set of X-shaped support sets has four support points, respectively being a first support point at one end of the first leg 11 connected to the table support frame, and a second support connected at one end of the second leg 12 to the table support frame A third support point at which the other end of the first leg 11 is connected to the base 2 and a fourth support point where the other end of the second leg 12 is connected to the base 2.
  • the second support points of the two sets of X-shaped support sets are connected by a second connecting shaft 7, and the fourth support points of the two sets of X-shaped support sets are connected by a fourth connecting shaft 8.
  • the two ends of the second connecting shaft 7 are respectively hinged and slidably connected in the two rails 15.
  • the two ends of the fourth connecting shaft 8 are respectively hinged and slidably connected to the base 2, and the first supporting point is hinged to the beam near the end of the motor 3.
  • the third support point is hinged on the base 2.
  • One end of the short link 4 is fixedly coupled to an end of the first leg 11 near the table top 1.
  • the first support points of the two sets of X-shaped support groups are connected by a first connecting shaft 19, and two ends of the first connecting shaft 19 are respectively hinged with the two beams 6, and the ends of the two first legs 11 are respectively It is fixedly coupled to the outer circumferential wall of the first connecting shaft 19.
  • An intermediate beam 9 is disposed between the two ends of the two beams 6.
  • the two ends of the intermediate beam 9 are respectively fixedly connected with the two beams 6.
  • the middle beam 9 is connected with a hanging plate 13 and the other end of the screw 16 is suspended. 13 hinged.
  • the screw rod 16 and the slider 17 are externally provided with a casing 10, and the end of the casing 10 is fixedly connected to the hanging plate 13.
  • the bottom of the motor 3 is mounted with a tact switch 18 that prevents the motor 3 from colliding with the base 2 when the table top 1 is lowered to the lowest position, and the contact of the tact switch 18 faces the base 2.
  • the action process of the present invention is as follows: when the lifting table rises, the motor 3 is started, the screw 16 rotates to drive the slider 17 to slide horizontally on the screw 16, and the oblique link of the long link 5 and the short link 4 is passed.
  • the transmission of the force of the mechanism drives the first leg 11 to rotate about the first support point, while the second connecting shaft 7 and the fourth connecting shaft 8 slide on the beam 6 and the base 2, respectively, thereby opening the X-shaped supporting leg until Stop the motor when it is opened to the appropriate position.
  • the angle ⁇ between the first leg 11 and the table top plate 1 in the horizontal direction increases from the closed state to the open state.
  • the motor 3 is reversely activated, and the X-shaped supporting legs are closed after a series of operations in the opposite directions, and the motor is stopped when it is lowered to a proper position.
  • the motor 3 is forced to stop operation by the limit of the tactile switch 18 to achieve safe operation.
  • the structure of the power drive device may also be a hydraulic cylinder device, and the free end of the piston rod of the hydraulic cylinder may be connected with the X-shaped support leg without a screw rod and a slider; or the transmission of the motor output shaft through the rack and pinion may be The power is output to the X-shaped support leg, that is, the motor output shaft drives the gear to rotate, and the rack is linearly moved by the meshing of the rack and the end of the rack is connected with the X-shaped support leg. and many more.

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Abstract

一种升降工作台，包括桌面板(1)、与桌面板(1)连接的桌板支撑框架、底座(2)、用于连接桌板支撑框架和底座(2)的X形支撑腿、以及驱动X形支撑腿张开或者关闭以实现桌面板(1)升降的动力驱动装置；动力驱动装置连接于桌板支撑框架上，并且动力输出端与X形支撑腿连接；它还包括对X形支撑腿始终施加斜向作用力的斜连杆机构，斜连杆机构一端连接于X形支撑腿上，另一端连接于动力驱动装置上。采用以上结构后，有效地降低了桌面板位于低端时电机的启动力，从而最大程度的提高了电机的功效，同时当桌面板停留在任意位置时，X形支撑腿对桌面板的支撑效果更好、更稳定。

Description

升降工作台 技术领域
本发明涉及家具技术领域，具体讲是一种升降工作台。
背景技术
目前，摆放于桌面上的升降台已经逐渐在人们的日常生活中普及，多用于学习、办公及娱乐等各个领域。它通常包括桌板、底座和升降支撑架，桌板通过升降支撑架连接在底座上，底座摆放于桌面上，而驱动升降支撑架实现电动升降功能的驱动装置通常为电机。如国家知识产权局网站上公开的公开号为CN103663257A、专利名称为“一种电动升降台”的专利申请，它包括了载物台、底板、传动组件和至少一组升降组件，载物台和底板分别连接在升降组件的上下两端，升降组件包括两根相互交叉铰接的第一支撑臂和第二支撑臂，传动组件包括电机和滑板，电机的主轴上连接有丝杆，滑板滑动连接在底板上，丝杆与滑板连接，第一支撑臂的两端分别铰接在载物台和滑板上。也就是说，电机驱动丝杆转动后，滑板在底板上滑动，驱动第一支撑臂下端在底板上滑动，从而实行的方向作用于支撑现载物台升降的目的。但是，这种结构的电动升降台存在的问题是：
由于驱动力始终以与底板平臂的下端，而支撑臂在底部沿底板水平滑行的同时还发生摆动的动作，摆动时支撑臂底端的受力是变化的，尤其是当支撑臂刚开始滑行的瞬间，驱动其滑行的推动力是最大的，因此，电机的输出动力要足够大，才能顺利地推动支撑臂的运动，这样一来，一方面要是选用足够大的推动力，电机的规格选用要足够大，相应的体积就大，占用到升降工作台的空间也大，从而造成整个升降台的重量增大、零部件的体积增大，继而使升降台更加笨重；另一方面，如果选用仅仅能推动支撑臂的推动力的话，电机规格是小，但是推动力不足，造成升降台升起吃力，甚至升不起来的现象；再一方面，当载物台停留在任意位置时，缺乏对支撑臂的锁定结构，载物台连带其上面的物体的总重量会压迫支撑臂回走，造成载物台下降的趋势，因此，升降台的稳定性差。
发明内容
本发明所要解决的技术问题是，提供一种对支撑臂有辅助作用力，从而升降轻便、无需增大电机规格，并且可以停留于任意位置处而稳定性强的升降工作台。
为解决上述技术问题，本发明提供的升降工作台，包括桌面板、与桌面板连接的桌板支 撑框架、底座、用于连接桌板支撑框架和底座的X形支撑腿、以及驱动X形支撑腿张开或者关闭以实现桌面板升降的动力驱动装置；所述动力驱动装置连接于桌板支撑框架上，并且动力输出端与X形支撑腿连接；该升降工作台还包括对X形支撑腿始终施加斜向作用力的斜连杆机构，所述斜连杆机构一端连接于X形支撑腿上，另一端连接于动力驱动装置上。
所述斜连杆机构包括一个长连杆和两个短连杆，长连杆的一端与滑块铰接，另一端同时与两个短连杆的一端铰接，两个短连杆的另一端与X形支撑腿固定连接；所述长连杆与动力驱动装置的动力输出方向始终形成一个夹角。
所述动力驱动装置包括电机连接座、电机、丝杆和滑块，电机连接座连接于桌面板上，电机固定连接在电机连接座上，电机的输出轴通过传动机构与丝杆的一端连接，滑块螺纹连接在丝杆上，丝杆的另一端与桌板支撑框架转动连接。
所述桌板支撑框架包括两条横梁和两条导轨，所述两条横梁分别连接在桌面板的前后两侧，电机连接在横梁的一端，两条导轨分别连接在远离电机的两条横梁的一端。
所述的X形支撑腿包括两组X形支撑组，每组X形支撑组由第一支腿和第二支腿铰接呈X形交叉而成；每组X形支撑组具有四个支撑点，分别为第一支腿的一端与桌板支撑框架连接的第一支撑点、第二支腿的一端与桌板支撑框架连接的第二支撑点、第一支腿的另一端与底座连接的第三支撑点和第二支腿的另一端与底座连接的第四支撑点；两组X形支撑组的第二支撑点之间通过第二连接轴连接，两组X形支撑组的第四支撑点之间通过第四连接轴连接；第二连接轴的两端分别铰接且滑动连接在两条导轨内，第四连接轴的两端分别铰接且滑动连接在底座上，第一支撑点铰接在靠近电机一端的横梁上，第三支撑点铰接在底座上；所述短连杆的一端固定连接在第一支腿靠近桌面板的端部。
所述的两组X形支撑组的第一支撑点之间通过第一连接轴连接，第一连接轴的两端分别与两根横梁铰接，两个第一支腿的端部固定连接在第一连接轴的外圆周壁上。
所述两根横梁中部之间设有中间梁，该中间梁的两端分别与两根横梁固定连接，中间梁上连接有挂板，丝杆的另一端与挂板铰接。
所述丝杆和滑块外部设置有罩壳，罩壳的端部与挂板固定连接。
所述电机底部安装有防止桌面板下降至最低位置时电机与底座发生碰撞的轻触开关，轻触开关的触点面向底座。
采用以上所述的结构后，本发明与现有技术相比，具有以下的优点：
1)由于动力输出轴通过斜连杆机构对X形支撑腿上部施加斜向的作用力，即使X形支撑腿处于收拢状态即桌面板位于最低位置时，长连杆始终对X形支撑腿有个斜向的作用力，因此，当升降台从最低位置处开始上升时，辅助了电机的驱动力，有效地降低了桌面板位于低 端时电机的启动力，从而最大程度的提高了电机的功效，因此，无需增大电机的输出功率，也就是说减小电机规格的情况下，减小了体积和重量，继而使电动升降台更加轻便；同时，当桌面板停留在任意位置时，通过斜连杆机构的作用，作用力分解成竖直向上的支撑力，使X形支撑腿对桌面板的支撑效果更好、更稳定；
2)斜连杆机构采用了长连杆和短连杆的组合结构，结构简单、运动稳定，传递的作用力效率更高；
3)轻触开关的设置，使桌面板到达最低位置时有个警示和限位作用，使本电动升降台的工作更加安全可靠。
附图说明
图1是本发明升降工作台的结构示意图。
图2是本发明升降工作台倒置时的结构示意图。
图3是本发明升降工作台的部分结构示意图。
图4是本发明升降工作台的部分结构示意图。
图5是本发明升降工作台的侧视结构示意图。
图6是本发明升降工作台从收拢状态到打开状态时斜连杆机构的结构示意图。
其中：1、桌面板；2、底座；3、电机；4、短连杆；5、长连杆；6、横梁；7、第二连接轴；8、第四连接轴；9、中间梁；10、罩壳；11、第一支腿；12、第二支腿；13、挂板；14、电机连接座；15、导轨；16、丝杆；17、滑块；18、轻触开关。
具体实施方式
下面结合具体实施方式对发明作进一步详细地说明。
由图1～图6所示的本发明升降工作台的结构示意图可知，包括桌面板1、与桌面板1连接的桌板支撑框架、底座2、用于连接桌板支撑框架和底座2的X形支撑腿、以及驱动X形支撑腿张开或者关闭以实现桌面板1升降的动力驱动装置。所述动力驱动装置连接于桌板支撑框架上，并且动力输出端与X形支撑腿连接。该升降工作台还包括对X形支撑腿始终施加斜向作用力的斜连杆机构，所述斜连杆机构一端连接于X形支撑腿上，另一端连接于动力驱动装置上。
所述斜连杆机构包括一个长连杆5和两个短连杆4，长连杆5的一端与电机驱动装置的输出端铰接，另一端同时与两个短连杆4的一端铰接，两个短连杆4的另一端与X形支撑腿固定连接。所述长连杆5与动力驱动装置的动力输出方向始终形成一个夹角。
所述动力驱动装置包括电机连接座4、电机3、丝杆16和滑块17，电机连接座4连接于桌面板1上，电机3固定连接在电机连接座4上，电机3的输出轴通过传动机构与丝杆16的 一端连接，滑块17螺纹连接在丝杆16上，丝杆16的另一端与桌板支撑框架转动连接，滑块17同时与长连杆5的一端铰接。
所述桌板支撑框架包括两条横梁6和两条导轨15，所述两条横梁6分别连接在桌面板1的前后两侧，电机3连接在横梁6的一端，两条导轨15分别连接在远离电机3的两条横梁6的一端。
所述的X形支撑腿包括两组X形支撑组，每组X形支撑组由第一支腿11和第二支腿12铰接呈X形交叉而成。每组X形支撑组具有四个支撑点，分别为第一支腿11的一端与桌板支撑框架连接的第一支撑点、第二支腿12的一端与桌板支撑框架连接的第二支撑点、第一支腿11的另一端与底座2连接的第三支撑点和第二支腿12的另一端与底座2连接的第四支撑点。两组X形支撑组的第二支撑点之间通过第二连接轴7连接，两组X形支撑组的第四支撑点之间通过第四连接轴8连接。第二连接轴7的两端分别铰接且滑动连接在两条导轨15内，第四连接轴8的两端分别铰接且滑动连接在底座2上，第一支撑点铰接在靠近电机3一端的横梁6上，第三支撑点铰接在底座2上。所述短连杆4的一端固定连接在第一支腿11靠近桌面板1的端部。
所述的两组X形支撑组的第一支撑点之间通过第一连接轴19连接，第一连接轴19的两端分别与两根横梁6铰接，两个第一支腿11的端部固定连接在第一连接轴19的外圆周壁上。
所述两根横梁6中部之间设有中间梁9，该中间梁9的两端分别与两根横梁6固定连接，中间梁9上连接有挂板13，丝杆16的另一端与挂板13铰接。
所述丝杆16和滑块17外部设置有罩壳10，罩壳10的端部与挂板13固定连接。
所述电机3底部安装有防止桌面板1下降至最低位置时电机3与底座2发生碰撞的轻触开关18，轻触开关18的触点面向底座2。
本发明的动作过程如下：升降工作台上升时，启动电机3，丝杆16转动带动滑块17在丝杆16上作水平方向的滑动，通过长连杆5和短连杆4的斜连杆机构的力的传递，带动第一支腿11绕着第一支撑点转动，同时第二连接轴7和第四连接轴8分别在横梁6和底座2上滑动，从而打开X形支撑腿，直至打开至合适位置时停止电机运行。从附图6中可以看出，第一支腿11与水平方向的桌面板1之间的夹角β，由合拢状态至打开状态呈增大趋势。反之，升降台下降时，反向启动电机3，经过一系列地反方向的各个零部件的运行，使X形支撑腿合拢，直至下降至合适位置时停止电机运行。当升降台下降至最低位置时，通过轻触开关18的限位迫使电机3停止运行，以实现安全操作。
以上所述，仅是本发明较佳可行的实施示例，不能因此即局限本发明的权利范围，对熟悉本领域的技术人员来说，凡运用本发明的技术方案和技术构思做出的其他各种相应的改变 都应属于在本发明权利要求的保护范围之内。比如，动力驱动装置的结构还可以是液压缸装置，无需丝杆和滑块，将液压缸的活塞杆自由端与X形支撑腿连接即可；也可以是电机输出轴通过齿轮齿条的传动将动力输出至X形支撑腿上，也就是说电机输出轴驱动齿轮转动，通过齿轮齿条的啮合使齿条直线运动，齿条的端部与X形支撑腿连接。等等。

Claims (9)

  1. 一种升降工作台，包括桌面板(1)、与桌面板(1)连接的桌板支撑框架、底座(2)、用于连接桌板支撑框架和底座(2)的X形支撑腿、以及驱动X形支撑腿张开或者关闭以实现桌面板(1)升降的动力驱动装置；其特征在于：所述动力驱动装置连接于桌板支撑框架上，并且动力输出端与X形支撑腿连接；该升降工作台还包括对X形支撑腿始终施加斜向作用力的斜连杆机构，所述斜连杆机构一端连接于X形支撑腿上，另一端连接于动力驱动装置上。
  2. 根据权利要求1所述的升降工作台，其特征在于：所述斜连杆机构包括一个长连杆(5)和两个短连杆(4)，长连杆(5)的一端与动力驱动装置的输出端铰接，另一端同时与两个短连杆(4)的一端铰接，两个短连杆(4)的另一端与X形支撑腿固定连接；所述长连杆(5)与动力驱动装置的动力输出方向始终形成一个夹角。
  3. 根据权利要求2述的电动升降工作台，其特征在于：所述动力驱动装置包括电机连接座(4)、电机(3)、丝杆(16)和滑块(17)，电机连接座(4)连接于桌面板(1)上，电机(3)固定连接在电机连接座(4)上，电机(3)的输出轴通过传动机构与丝杆(16)的一端连接，滑块(17)螺纹连接在丝杆(16)上，丝杆(16)的另一端与桌板支撑框架转动连接，滑块(17)同时与长连杆(5)的一端铰接。
  4. 根据权利要求3所述的升降工作台，其特征在于：所述桌板支撑框架包括两条横梁(6)和两条导轨(15)，所述两条横梁(6)分别连接在桌面板(1)的前后两侧，电机(3)连接在横梁(6)的一端，两条导轨(15)分别连接在远离电机(3)的两条横梁(6)的一端。
  5. 根据权利要求4所述的升降工作台，其特征在于：所述的X形支撑腿包括两组X形支撑组，每组X形支撑组由第一支腿(11)和第二支腿(12)铰接呈X形交叉而成；每组X形支撑组具有四个支撑点，分别为第一支腿(11)的一端与桌板支撑框架连接的第一支撑点、第二支腿(12)的一端与桌板支撑框架连接的第二支撑点、第一支腿(11)的另一端与底座(2)连接的第三支撑点和第二支腿(12)的另一端与底座(2)连接的第四支撑点；两组X形支撑组的第二支撑点之间通过第二连接轴(7)连接，两组X形支撑组的第四支撑点之间通过第四连接轴(8)连接；第二连接轴(7)的两端分别铰接且滑动连接在两条导轨(15)内，第四连接轴(8)的两端分别铰接且滑动连接在底座 (2)上，第一支撑点铰接在靠近电机(3)一端的横梁(6)上，第三支撑点铰接在底座(2)上；所述短连杆(4)的一端固定连接在第一支腿(11)靠近桌面板(1)的端部。
  6. 根据权利要求5所述的升降工作台，其特征在于：所述的两组X形支撑组的第一支撑点之间通过第一连接轴(19)连接，第一连接轴(19)的两端分别与两根横梁(6)铰接，两个第一支腿(11)的端部固定连接在第一连接轴(19)的外圆周壁上。
  7. 根据权利要求4所述的升降工作台，其特征在于：所述两根横梁(6)中部之间设有中间梁(9)，该中间梁(9)的两端分别与两根横梁(6)固定连接，中间梁(9)上连接有挂板(13)，丝杆(16)的另一端与挂板(13)铰接。
  8. 根据权利要求7所述的升降工作台，其特征在于：所述丝杆(16)和滑块(17)外部设置有罩壳(10)，罩壳(10)的端部与挂板(13)固定连接。
  9. 根据权利要求3所述的升降工作台，其特征在于：所述电机(3)底部安装有防止桌面板(1)下降至最低位置时电机(3)与底座(2)发生碰撞的轻触开关(18)，轻触开关(18)的触点面向底座(2)。
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CN203913916U (zh) * 2014-04-30 2014-11-05 何荣 一种可升降的用于放置电脑及配件的台面
CN205947441U (zh) * 2016-02-19 2017-02-15 深圳米乔科技有限公司 一种桌上型手动升降坐站式办公电脑桌
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CN206338567U (zh) * 2017-01-06 2017-07-18 乐歌人体工学科技股份有限公司 桌面摆放式升降台
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CN110495710A (zh) * 2019-09-16 2019-11-26 宁波康颖金属制品有限公司 升降桌台
CN112998400A (zh) * 2021-03-01 2021-06-22 杨万云 一种可升降式学术宣讲台

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US10986918B2 (en) 2021-04-27
US20200029683A1 (en) 2020-01-30

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