WO2018072365A1 - 一种升降桌 - Google Patents

一种升降桌 Download PDF

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Publication number
WO2018072365A1
WO2018072365A1 PCT/CN2017/074264 CN2017074264W WO2018072365A1 WO 2018072365 A1 WO2018072365 A1 WO 2018072365A1 CN 2017074264 W CN2017074264 W CN 2017074264W WO 2018072365 A1 WO2018072365 A1 WO 2018072365A1
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WO
WIPO (PCT)
Prior art keywords
tension spring
lifting
spring
supporting portion
table frame
Prior art date
Application number
PCT/CN2017/074264
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English (en)
French (fr)
Inventor
朱文彬
Original Assignee
深圳米乔科技有限公司
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Filing date
Publication date
Application filed by 深圳米乔科技有限公司 filed Critical 深圳米乔科技有限公司
Priority to US16/343,712 priority Critical patent/US10694841B2/en
Publication of WO2018072365A1 publication Critical patent/WO2018072365A1/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
    • 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
    • A47B9/00—Tables with tops of variable height
    • A47B9/02—Tables with tops of variable height with balancing device, e.g. by springs, by weight
    • 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
    • A47B2200/0064—Table leg assembly held in folded position by tension means

Definitions

  • the invention relates to the field of office and learning furniture technology, in particular to a lifting table.
  • the lifting table can be used above the existing desk or above other supports. Computers and other related office products are placed on the lifting table, when sitting and standing alternately. When adjusting the height of the lifting table to adapt to changes in the posture of the human body.
  • the power components used in the lifting table are basically gas springs or tension springs, and the size of the lifting power is fixed and unadjustable, and can only meet the fixed load range at the time of design.
  • a lift table with a gas spring as a power component can automatically raise the speed of the lift table in the design load range; but when the load exceeds the design range, it will cause the lift to be weak, requiring an extra lift, causing the user to Poor experience.
  • the lifting table with the tension spring as the power component will cause the toggle switch table to rise automatically when the table load is insufficient, which may cause the desktop to fall and the use is unsafe; when the table load is too heavy, In addition, the user will need to raise the table extra, and the user experience is not good.
  • the object of the present invention is to provide a lifting table capable of adjusting the size of the lifting power, so that the user can adjust the lifting power according to the load of the lifting table, and solve the problem that the lifting table is unstable due to different table loads. Laborious problem.
  • the present invention provides a lifting table including a table frame, a table top disposed above the table frame, and two X-shaped lifting frames disposed on both sides of the table frame, each of the X
  • the lower side of the type lifting frame is provided with a table leg, and each of the X-shaped lifting frames comprises a first supporting portion and a second supporting portion, and the central portion of the first supporting portion and the second supporting portion are hingedly fixed.
  • the upper end of the first support portion is slidably connected to the table frame, the lower end is hingedly fixed to the table leg, the upper end of the second support portion is hingedly fixed to the table frame, and the lower end is slidably connected to the table leg.
  • a tension spring is disposed between an upper end of the first support portion and an upper end of the second support portion, and a movable end of the tension spring is connected to an upper end of the first support portion, and a fixed end of the tension spring
  • the table frame is fixed by a distance adjusting device for adjusting a distance between the fixed end of the tension spring and the table frame.
  • each of the distance adjusting devices includes a tension spring fixing member and an adjusting screw, and one end of the adjusting screw is threadedly connected to the tension spring fixing member after passing through the table frame.
  • each of the tension spring fixing members is provided with at least two first bending portions for clamping the tension springs, and the two first bending portions are oppositely disposed.
  • a first torsion spring is disposed at a hinged fixing portion of the first supporting portion and the table leg, the first torsion spring is sleeved on the first hinge shaft, and one end of the first torsion spring a second bent portion is provided, and the other end is abutted against the torsion spring baffle.
  • an adjustment knob is disposed in the table leg, and the adjustment knob includes a dial.
  • a plurality of support platforms having a height increasing in sequence are arranged above the dial, and the dial portion is exposed outside the table legs;
  • the first supporting portion rotates, and one end of the first torsion spring rotates with the lower end of the first supporting portion through the second bending portion, so that the other end of the first torsion spring gradually abuts therein A support platform.
  • first support portion is slidably connected to the table frame through a first slider
  • second support portion is slidably connected to the table frame through a second slider
  • first An upper end of the support portion is hinged with the first slider
  • a lower end of the second support portion is hinged with the second slider
  • the table frame is provided with a plurality of limiting holes at intervals;
  • the lifting table further includes the locking device, the locking device is coupled to the first slider, wherein the locking device comprises:
  • the handle is hingedly fixed to the table frame by a second hinge shaft, and the second hinge sleeve is provided with a second torsion spring for providing a restoring force to the handle;
  • the latching sleeve is provided with a spring baffle, and the latching pin is disposed in the latching package box, and one end of the latching pin is inserted into the limiting hole through the latching package and the first slider;
  • the spring is sleeved on the pin, and one end of the spring abuts against the spring baffle and moves together with the spring baffle for providing a restoring force to the pin;
  • the lower ends of the first support portion and the second support portion are each bent toward a side close to the other side.
  • the table frame is provided with a limiting block, and the tension spring fixing member at least partially abuts against the limiting block for defining an initial position of the tension spring.
  • the table frame is provided with an observation hole, which can display the tension spring fixing member, and a gear position mark is arranged around the observation hole, and the gear position corresponding to the edge of the tension spring fixing member Record as the current gear.
  • the lifting table provided by the present invention is provided with a distance adjusting device at the fixed end of the tension spring of each X-shaped frame, and when the load on the table changes, the distance adjusting device is used to adjust the pulling
  • the distance between the fixed end of the spring and the table frame changes the length of the pulling force of the tension spring, so that the pulling force of the tension spring is adapted to the load, so that the lifting process of the lifting table is stable and labor-saving, and the user experience is improved.
  • FIG. 1 is a schematic structural view of a lifting table with the keyboard tray removed after the embodiment of the present invention
  • FIG. 2 is a schematic structural view of a table frame according to an embodiment of the present invention.
  • Figure 3 is an enlarged schematic view of a portion A of Figure 2;
  • FIG. 4 is a schematic structural view of another angle of the lifting table according to the embodiment of the present invention.
  • Figure 5 is an enlarged schematic view of a portion B of Figure 4.
  • Figure 6 is an enlarged schematic view of a portion C of Figure 4.
  • FIG. 7 is a schematic structural view of a lifting table at another angle according to an embodiment of the present invention.
  • Figure 8 is an enlarged schematic view of a portion D of Figure 7;
  • FIG. 9 is a schematic structural view of an adjustment adjustment knob according to Embodiment 2 of the present invention.
  • Figure 10 is a partial structural view of the table legs of the second embodiment.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
  • a lifting table provided by an embodiment of the present invention includes a desktop 1 , a table frame 2 , two X-shaped lifting frames 3 , and two table legs 4 , wherein the table top 1 is disposed above the table frame 2 , and two The X-shaped lifting frame 3 is respectively provided with two sides of the table frame 2, and each of the table frames 2 is provided with a table leg 4 on the lower side thereof.
  • each X-shaped lifting frame 3 includes a first supporting portion 31 and a second portion.
  • the support portion 32, the middle portion of the first support portion 31 and the second support portion 32 are hingedly fixed, the upper end of the first support portion 31 is slidably connected to the table frame 2, the lower end thereof is hingedly fixed to the table leg 4, and the upper end of the second support portion 32 is fixed.
  • the table frame 2 is hingedly fixed, and the lower end thereof is slidably coupled to the table leg 4, and the height of the table top 1 is adjusted by adjusting the distance between the ends of the first support portion 31 and the second support portion 32.
  • the upper end of the first support portion 31 is slidably coupled to the table frame 2 through the first slider 10
  • the lower end of the second support portion 21 is slid to the table frame 2 through the second slider 16.
  • an upper end of the first support portion is hinged with the first slider
  • a lower end of the second support portion is hinged with the second slider.
  • the first slider 10 is coupled to a first rail disposed on the table frame 2
  • the second slider 16 is coupled to a second rail disposed within the table foot 4.
  • a tension spring 7 is disposed between the upper end of the first support portion 31 and the upper end of the second support portion 31, and one end of the tension spring 7 is connected to the upper end of the first support portion 31.
  • the other end is fixed to the table frame 2 by a distance adjusting device.
  • one end connected to the upper end of the first supporting portion 31 is a movable end, which can synchronously move with the upper end of the first supporting portion 31, and the other end opposite to the movable end is a fixed end, according to the load on the table.
  • the distance between the fixed end and the end of the table frame 2 is adjusted by the distance adjusting device, and the tension stroke length of the tension spring 7 is changed, so that the pulling force of the tension spring 7 is adapted to the load, so that the lifting process of the lifting table is stable and labor-saving. To improve the user experience.
  • the distance adjusting device comprises a tension spring fixing member 6 and an adjusting screw 5, wherein one end of the adjusting screw 5 passes through the table frame 2 and is screwed to the tension spring fixing member 6, and the other end is located outside the table frame 2. Easy to adjust.
  • the tension spring fixing member 6 is a sheet metal member having a through hole formed in the sheet metal wall, and a nut that cooperates with the adjusting screw 5 is coaxially disposed on one side or both sides of the through hole.
  • a retaining ring is provided at an end of the adjusting screw 5 away from the table frame 2 to prevent the adjusting screw 5 from coming off.
  • the tension spring fixing member 6 is provided with at least two first bending portions 61 for the fastening springs 7, and preferably, the two first bending portions 61 are oppositely disposed, that is, the two first bending portions Each of the portions 61 is bent toward the side close to the other side, and the two first bent portions 61 are inserted and engaged from opposite sides of the tension spring 7 during installation, so that the tension spring 7 maintains the tension balance.
  • the table frame 2 is provided with a limiting block 18, and the tension spring fixing member 6 at least partially abuts against the limiting block 18.
  • the tension spring fixing member 6 is at the limit position.
  • the position of the tension spring is the initial position of the tension spring 7, which is adapted to the lifting and lowering of the table top at a small load.
  • an observation hole 22 is provided in the table frame 2, and a gear mark is provided around the observation hole 22.
  • the tension spring 7 When the tension spring 7 is in the initial state, the tension spring can be seen from the observation hole 22
  • the edge of the stator 6 and the edge of the tension spring fixing member 6 correspond to the lowest gear position (the pulling stroke of the tension spring 7 is the shortest).
  • the color of the tension spring fixing member 6, for example, green in order to clearly see the current position of the tension spring 7, it is preferable to apply the color of the tension spring fixing member 6, for example, green, and in the initial state of the tension spring 7, only the green length can be seen by the observation hole 22. As the tension spring fixing member 6 moves, the green strip gradually fills the observation hole 22, and the foremost end of the green strip (the front end of the green strip moving direction) corresponds to the current gear position.
  • the gears are marked with digital scales, patterns or texts, for example, digital scale logos, tablets, laptops, desktop computers, etc., representing different weight patterns, different depths of color changes or text prompts.
  • the pulling force of the tension spring 7 gradually increases.
  • the tension spring 7 basically loses the function of the falling buffer, and the desktop suddenly drops.
  • the initial pulling force may be insufficient, and the lifting is more laborious.
  • the first supporting portion 31 and the table foot 4 are hingedly fixed.
  • the first torsion spring 12 is disposed, and specifically, the first torsion spring 12 is sleeved on the first hinge shaft 11 (the hinge shaft of the first support portion 31 and the table leg 4), and one end of the first torsion spring 12 is provided
  • the second bent portion 121 has the other end abutting against the torsion spring baffle 41.
  • the torsion spring baffle 41 forms a relatively closed space with the table leg 4.
  • the lower end of the first support portion is provided with a bend or a stopper is provided for engaging with the second bent portion 121 to push the first torsion spring 12 to rotate.
  • the table frame 2 of the lifting table has a plurality of limiting holes 22, and the lifting The table further includes a locking device for locking the height of the lifting table in cooperation with the limiting hole 21, the locking device being coupled to the first slider 10.
  • the locking device includes a handle 8, a cable (not shown), a latch package 9, a latch 17, and a spring baffle 14 sleeved outside the latch 17, wherein the handle 8 is hinged by a second hinge shaft Fixed to the table frame 2, the second hinge shaft is sleeved with a second torsion spring, one end of the second torsion spring abuts the table frame 2, and the other end abuts the handle 8 for providing a restoring force for the handle;
  • the latch package 9 is fixed to the first slider 10 and can move together with the first slider 10; the latch 17 is disposed in the latch package 9, and one end of the latch 17 passes through the latch package 9 and the first slider 10 in sequence.
  • the spring 13 Inserting the limiting hole 21; the spring 13 is sleeved on the latch 17, and one end of the spring 13 abuts against the spring baffle 14, which can move together with the spring baffle 14, and the other end of the spring 14 is fixed; one end of the pull wire is connected with the handle 8. The other end is connected to the latch 17 for pulling the latch 17 out of the limiting hole 21.
  • the spring baffle 14 moves together with the latch 17, and the compression spring 13 is released.
  • the spring 13 Provides a restoring force to the pin 17.
  • the first support portion 31 and the second support portion 32 are The lower ends are bent toward the side close to each other.
  • the X-shaped lifting frame 3 is connected by a connecting rod 15, and more preferably, both ends of the connecting rod 15 are respectively fixed to the second supporting portion 32. Near the middle.
  • the two legs 4 are connected by a connecting rod 15 to increase the structural strength.
  • the two first sliders 10 are connected by the connecting rod 15, which not only increases the structural strength of the lifting table, but also enables the two first sliders 10 to slide synchronously to prevent the table top 1 from tilting.
  • the first slot body and the second slot body are included in the bottom of the table.
  • the first tank body and the second tank body are each provided with a plurality of projecting portions.
  • the first trough body and the second trough body are fixedly mounted on the bottom of the table top 1 at a suitable distance, and the protruding portions of the two trough bodies are staggered, that is, the protruding portion of one trough body extends into the other Between two adjacent protrusions of the slot body, and at least one power cord is left between the front end of the protrusion and the other slot body, and extends into the other slot body and protrudes adjacent to each other.
  • the lifting table is first raised to the highest position and then the distance between the fixed end of the tension spring 7 and the table frame 2, because the lifting table is at the highest position, the tension spring 7 is not pulled open, and the force is less, which is convenient for adjustment. Adjustment of the screw.
  • the second embodiment is basically the same as the first embodiment, and the same points are not described herein again.
  • the difference is that the adjustment of the torque of the first torsion spring 12 is provided in the table leg 4.
  • the knob 20, in particular, the adjustment knob 20 includes a dial 201, and a plurality of support platforms 202 whose height is sequentially increased above the dial 201, that is, the plurality of support platforms 202 are arranged in a direction from low to high, and the tray is pulled. 201 is partially exposed outside the table leg 4, and the torque of the first torsion spring 12 is conveniently adjusted by the dial 201.
  • the dial 201 When the load on the table increases, the dial 201 is pulled, so that the support platform 202 of the corresponding height is located at the first torsion spring 12.
  • the first support 31 On the lower side of the end, when the lifting table is lowered, the first support 31 rotates clockwise. When the rotation reaches a certain degree, one end of the first torsion spring 12 rotates along the lower end of the first supporting portion 31 through the second bending portion 121, and the end thereof The portion of the support platform 202 on the lower side is adjusted by the height of the support platform 202 to achieve the torque adjustment of the first torsion spring 12.
  • the gear position of the first torsion spring 12 has a corresponding relationship with the gear of the tension spring 7, for example, one gear of the tension spring 7 corresponds to the first gear of the first torsion spring 12, and the second gear of the tension spring 7 corresponds to the first twist.
  • the second gear of the spring 12 makes the gear position one-to-one correspondence, which is convenient for adjustment.
  • a first gear corresponding to the first torsion spring 12 In the first and second gears of the spring 7, the second gear of the first torsion spring 12 corresponds to the third and fourth gears of the tension spring 7, and so on, which is convenient for the user to adjust so that both can be adapted to the load.
  • the adjacent two support platforms 202 are connected by the ferry surface 203, and the gear position can be adjusted even if the end of the first torsion spring 12 abuts against the support platform 202.
  • the adjustment knob 20 is at the lowest gear, that is, the end of the first torsion spring 12 is rotated against the lowest support platform 202.
  • the table load is increased, passing Adjusting the distance between the fixed end of the tension spring 7 and the table frame 2 to adjust the tension of the tension spring 7, so that the front section of the lifting table and the raised rear end are kept stable and labor-saving, and the first twist is adjusted by rotating the adjustment knob 20.
  • the torsion of the spring 12 provides cushioning for the rear section of the lowering of the lifting table and the raised front end provides lift assist, which makes the lifting table stable, labor-saving and safe in the process of lowering and raising.

Abstract

一种升降桌，包括桌架（2）、设置在桌架（2）上方的桌面（1）、设置在桌架（2）两侧的两个X型升降架（3），每个X型升降架（3）均包括第一支撑部（31）和第二支撑部（32），在第一支撑部（31）的上端和第二支撑部（32）的上端之间设有拉簧（7），拉簧（7）的活动端与第一支撑部（31）的上端连接，拉簧（7）的固定端通过距离调节装置固定在桌架（2）上，利用距离调节装置调整拉簧（7）的固定端与桌架（2）之间的距离，改变拉簧（7）的拉力行程长度，从而使拉簧（7）的拉力与负载相适应，使升降桌的升降过程平稳、省力，提高用户体验。

Description

一种升降桌 技术领域
本发明涉及办公、学习家具技术领域，尤其涉及一种升降桌。
背景技术
随着计算机技术的普及和发展，越来越多的人通过计算机进行工作或学习。计算机给人们工作和生活带来方便的同时，也给人们带来一些负面的影响，人们开始长时间使用并久坐电脑前，导致人们颈椎病、腰锥病等职业病频繁发生，越来越多的人提出健康办公、学习的理念。
而研究表明，如果人们采用坐姿和站姿交替办公，能够较好的预防颈椎病、腰锥病等现代职业病，为此市场上出现了升降办公桌，以满足人们坐姿和站姿交替办公的需要，但这些产品一般结构较为复杂、成本较高，而且现有企业想要使用还需要淘汰原有的办公桌，重新置换升降办公桌，不但浪费时间和人力，而且造成很大的成本浪费。
在此基础上，市场上出现一种升降桌，该升降桌放在现有办公桌上方或者其它支撑上方即可使用，计算机等相关办公产品放在该升降桌上，当坐姿和站姿交替办公时，通过调整升降桌的高度来适应人体姿势的变化。
目前市场上，升降桌使用的动力元件基本为气弹簧或拉簧等配件，其升降动力的大小是固定不可调节的，只能满足设计时的固定负载范围。例如，以气弹簧为动力元件的升降桌，在设计负载范围内，拨动开关升降桌就能够自动匀速上升；但在负载超过设计范围的时候又会导致抬升乏力，需要人额外抬升，致使用户体验不佳。以拉簧为动力元件的升降桌，在桌子负载不够的时候会导致拨动开关桌子就自动快速上升，易导致桌面东西掉落，使用不安全；而桌子负载太重的时候， 又会需要用户额外抬升桌子，用户体验不佳。
发明内容
(一)要解决的技术问题
本发明的目的是提供一种能够调节升降动力大小的升降桌，让使用者根据升降桌的负载大小进行升降动力调节，解决现有升降桌因桌子负载不同，而造成的升降过程不平稳及升降费力问题。
(二)技术方案
为了解决上述技术问题，本发明提供了一种升降桌，包括桌架、设置在所述桌架上方的桌面、设置在所述桌架两侧的两个X型升降架，每个所述X型升降架下侧均设有一个桌脚，每个所述X型升降架均包括第一支撑部和第二支撑部，所述第一支撑部和所述第二支撑部的中部铰接固定，且所述第一支撑部的上端与所述桌架滑动连接，下端与所述桌脚铰接固定，所述第二支撑部的上端与所述桌架铰接固定，下端与所述桌脚滑动连接；
在所述第一支撑部的上端和所述第二支撑部的上端之间设有拉簧，所述拉簧的活动端与所述第一支撑部的上端连接，所述拉簧的固定端通过距离调节装置固定在所述桌架，所述距离调节装置用于调整拉簧固定端与所述桌架之间的距离。
进一步地，每个所述距离调节装置均包括拉簧固定件和调节螺杆，所述调节螺杆的一端穿过所述桌架后与所述拉簧固定件螺纹连接。
进一步地，每个所述拉簧固定件至少设有两个用于卡固拉簧的第一折弯部，且两个所述第一折弯部相对设置。
进一步地，所述第一支撑部与所述桌脚的铰接固定处设有第一扭簧，所述第一扭簧套设在所述第一铰接轴，且所述第一扭簧的一端设有第二折弯部，另一端抵在扭簧挡板，升降桌下降时，所述第一支撑部转动，其下端抵在所述第二折弯部并推动所述第一扭簧转动。
进一步地，所述桌脚内设有调节旋钮，所述调节旋钮包括拔盘， 所述拔盘上方设有多个高度依次增高的支撑平台，所述拔盘部分露出桌脚外；
升降桌下降时，所述第一支撑部转动，所述第一扭簧的一端通过第二折弯部随第一支撑部的下端转动，使所述第一扭簧的另一端逐渐抵在其中一个支撑平台。
进一步地，所述第一支撑部的上端通过第一滑块与所述桌架滑动连接，所述第二支撑部的下端通过第二滑块与所述桌架滑动连接，且所述第一支撑部的上端与所述第一滑块铰接，所述第二支撑部的下端与所述第二滑块铰接。
进一步地，所述桌架间隔设置有多个限位孔；
所述升降桌还包括所述锁止装置，所述锁止装置与所述第一滑块连接，其中，所述锁止装置包括：
手柄，所述手柄通过第二铰接轴铰接固定在所述桌架，所述第二铰接轴套设有第二扭簧，用于为所述手柄提供回复力；
插销封装盒，所述插销封装盒与所述第一滑块固定；
插销，所述插销套设有弹簧挡板，且所述插销设置在所述插销封装盒内，所述插销的一端依次穿过插销封装盒和第一滑块后插入所述限位孔；
弹簧，所述弹簧套设在所述插销，且所述弹簧的一端抵在所述弹簧挡板，并随所述弹簧挡板一起移动，用于为所述插销提供回复力；
拉线，所述拉线的一端与所述手柄连接，另一端与所述插销连接，用于将所述插销从所述限位孔拉出。
进一步地，所述第一支撑部和所述第二支撑部的下端均向靠近对方的一侧折弯。
进一步地，所述桌架设有限位块，所述拉簧固定件至少部分抵在所述限位块，用于限定所述拉簧的初始位置。
进一步地，所述桌架设有观察孔，能够显示所述拉簧固定件，在所述观察孔周边设置档位标记，所述拉簧固定件边缘所对应的档位标 记为当前档位。
(三)有益效果
本发明的上述技术方案具有如下优点：本发明提供的升降桌，在每个X型架的拉簧的固定端均设置一个距离调节装置，当桌上负载发生变化时，利用距离调节装置调整拉簧的固定端与桌架之间的距离，改变拉簧的接拉力行程长度，从而使拉簧的拉力与负载相适应，使升降桌的升降过程平稳、省力，提高用户体验。
附图说明
图1是本发明实施例一升降桌去掉键盘托板后的结构示意图；
图2是本发明实施例一桌架结构示意图；
图3是图2的A部放大示意图；
图4是本发明实施例一升降桌另一角度的结构示意图；
图5是图4的B部放大示意图；
图6是图4的C部放大示意图；
图7是本发明实施例一升降桌又一角度的结构示意图；
图8是图7的D部放大示意图；
图9是本发明实施例二调节调节旋钮结构示意图；
图10是实施例二桌脚局部结构示意图。
图中：1：桌面；2：桌架；21：限位孔；22：观察孔；3：X型升降架；31：第一支撑部；32：第二支撑部；4：桌脚；5：调节螺杆；6：拉簧固定件；61：第一折弯部；7：拉簧；8：手柄；9：插销封装盒；10：第一滑块；11：第一铰接轴；12：第一扭簧；121：第二折弯部；13：弹簧；14：弹簧挡板；15：连接杆；16：第二滑块；17：插销；18：限位块；19：集线槽；20：调节旋钮；201：拔盘；202：支撑平台；203：过渡面。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结 合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
实施例一
如图1所示，本发明实施例提供的升降桌，包括桌面1、桌架2、两个X型升降架3，两个桌脚4，其中，桌面1设置在桌架2上方，两个X型升降架3分别设置桌架2的两侧，每个桌架2的下侧均设有一个桌脚4，具体地，每个X型升降架3均包括第一支撑部31和第二支撑部32，第一支撑部31和第二支撑部32的中部铰接固定，第一支撑部31的上端与桌架2滑动连接，其下端与桌脚4铰接固定，第二支撑部32的上端与桌架2铰接固定，其下端与所述桌脚4滑动连接，通过调整第一支撑部31和第二支撑部32的端部之间的距离来桌面1的高度。
具体地，如图1和图2所示，第一支撑部31的上端通过第一滑块10与桌架2滑动连接，第二支撑部21的下端通过第二滑块16与桌架2滑动连接，且所述第一支撑部的上端与所述第一滑块铰接，所述第二支撑部的下端与所述第二滑块铰接。更加具体地，第一滑块10是与设置在桌架2的第一滑轨连接，第二滑块16是与设置在桌脚4内的第二滑轨连接。
进一步地，如图1-图3所示，在第一支撑部31的上端和第二支撑部31的上端之间设置拉簧7，该拉簧7的一端与第一支撑部31的上端连接，另一端通过距离调节装置固定在桌架2。在升降桌的升降过程中，与第一支撑部31上端连接的一端为活动端，能够随第一支撑部31的上端同步移动，与活动端相对的另一端为固定端，根据桌上负载的不同，利用距离调节装置调节固定端与桌架2端部之间的距离，改变拉簧7的拉力行程长度，从而使拉簧7的拉力与负载相适应，使升降桌的升降过程平稳、省力，提高用户体验。
具体地，拉簧7的固定端越靠近桌架，其拉力越大，能够承受的负载也越大；反之，拉簧7能够承受的负载越小。
优选地，距离调节装置包括拉簧固定件6和调节螺杆5，其中，调节螺杆5的一端穿过桌架2后与拉簧固定件6螺纹连接，而另一端则位于桌架2的外侧，方便进行调节操作。
更加具体地，拉簧固定件6为钣金件，其钣金壁上设有过孔，在过孔的一侧或者两侧同轴设置有与调节螺杆5相配合的螺母。
优先地，在调节螺杆5远离桌架2的一端设置挡圈，防止调节螺杆5脱出。
进一步的，拉簧固定件6至少设有两个用于卡固拉簧7的第一折弯部61，且优选地，两个第一折弯部61相对设置，即两个第一折弯部61均是向靠近对方的一侧折弯，安装时将相对的两个第一折弯部61从拉簧7相对的两侧伸入并卡固，使拉簧7保持拉力平衡。
进一步地，如图2和图3所示，桌架2设有限位块18，拉簧固定件6至少部分抵在限位块18，当升降桌出厂时，拉簧固定件6抵在限位块18，此时拉簧的位置即为拉簧7的初始位置，适应于小负载时桌面的升降。
为了在使升降桌两侧的升降力相同，并方便使用者调整，优选地，如图4和图6所示，在桌架2设置观察孔22，并在观察孔22的周边设置档位标记。当拉簧7位于初始状态时，能够从观察孔22看到拉簧固 定件6的边缘，且此时拉簧固定件6的边缘对应的为最低档位(拉簧7的拉开行程最短)。
为了能清楚的看到拉簧7目前所处挡位，优选地，将拉簧固定件6涂上颜色，例如绿色，在拉簧7的初始状态时，仅能由观察孔22看到绿色长条，随着拉簧固定件6的移动，绿色长条逐渐填满观察孔22，绿色长条的最前端(绿色长条移动的方向前端)对应的为当前挡位。
其中，挡位标记为数字刻度、图案或者文字，例如，数字刻度标识、平板电脑、笔记本电脑、台式电脑等代表不同重量的图案、不同深度的颜色变化或者文字提示。
升降桌下降过程中，拉簧7的拉力逐渐增大，当下降到临界点后，力的平衡突然打破，此时拉簧7基本失去下降缓冲的作用，会出现桌面突然下降的情况。而在升降桌上升过程中，起始拉力会有不足，上升时较为费力，为了克服上述问题，进一步地，如图4和图5所示，在第一支撑部31与桌脚4的铰接固定处设置第一扭簧12，具体地，第一扭簧12套设在第一铰接轴11(第一支撑部31与桌脚4的铰接轴)，且第一扭簧12的一端设有第二折弯部121，另一端抵在扭簧挡板41，该扭簧挡板41与桌脚4形成相对封闭的空间，在桌面1升到最高时，第二折弯部121与第一支撑部31的下端还有一定距离，当桌面1下降，第一支撑部31的下端顺时针转动，当桌面下降到临界点后，第一支撑部31的下端抵在第二折弯部121，推动第一扭簧12转动，使桌面1下降得到缓冲；在桌面1上升时，第一支撑部31的下端逆时针转动，第一扭簧12回复，从而向第一支撑部31的下端施加一个推力，辅助桌面1上升，使桌面1上升的前期也能够较为省力。
优选地，第一支撑部的下端设有折弯或者设置有挡块，用于与第二折弯部121配合，推动第一扭簧12转动。
升降桌在使用时不只是只有升降到最高和最低两种状态，还会根据使用者的不同，在升降到不同高度时使用，为实现上述目的，如图7和图8所示，本实施例的升降桌的桌架2还有多个限位孔22，该升降 桌还包括与限位孔21相配合的用于锁定升降桌高度的锁止装置，该锁止装置与第一滑块10连接。
具体地，该锁止装置包括手柄8、拉线(图中未示出)、插销封装盒9、插销17、套设在插销17外侧的弹簧挡板14，其中，手柄8通过第二铰接轴铰接固定在桌架2，第二铰接轴外侧套设有第二扭簧，第二扭簧的一端抵在桌架2，另一端抵在手柄8，用于为所述手柄提供回复力；所述插销封装盒9固定在第一滑块10，能够随第一滑块10一起移动；插销17设置在插销封装盒9内，插销17的一端依次穿过插销封装盒9和第一滑块10后插入限位孔21；弹簧13套设在插销17，且弹簧13的一端抵在弹簧挡板14，能够随弹簧挡板14一起移动，弹簧14的另一端固定；拉线的一端与手柄8连接，另一端与插销17连接，用于将插销17从限位孔21拉出，插销17被拉出时，弹簧挡板14与插销17一起移动，压缩弹簧13，插销17的拉力消失时，弹簧13为插销17提供回复力。
在桌面升降高度不变的情况下，为了进一步地缩小第一支撑部31和第二支撑部32的滑动行程，优选地，如图4所示，第一支撑部31和第二支撑部32的下端均向靠近对方的一侧折弯。
为了增加升降桌的结构强度，优选地，如图1和图7所示，X型升降架3通过连接杆15连接，更优选地，该连接杆15的两端分别固定在第二支撑部32的中部附近。
进一步地，两个桌脚4通过连接杆15连接，增加结构强度。
进一步地，两个第一滑块10通过连接杆15连接，不但增加升降桌结构强度，而且能够使两个第一滑块10滑动同步，防止桌面1倾斜。
为了收拢电源线、数据线等线缆，如图1所示，在桌面底部设置集线槽19，且该集线槽19为分体结构，包括第一槽体和第二槽体，其中，第一槽体和第二槽体均间隔设置有多个伸出部。
具体地，第一槽体和第二槽体以合适的距离安装固定在桌面1的底部，两个槽体的伸出部交错设置，即一个槽体的伸出部伸入到另一 个槽体的两个相邻伸出部之间，且该伸出部的前端与另一个槽体之间至少留有一根电源线的距离，并且伸入另一槽体两个相邻伸出部之间的伸出部，与该相邻的两个伸出部之间均留设有至少一个线缆的距离，使第一槽体和第二槽体之间形成回折连通的过线通道，使用时直接将电源线、数据线等线缆绕入集线槽19即可，不用考虑电源线的插头问题，使用方便。
当需要调整拉簧7的拉力大小时，调整拉簧固定件6与桌架2之间的距离，使拉簧7具有与负载相适应的拉力，调整时注意两侧拉簧固定件6与桌架2的距离要一致。调整完成后，松开手柄8插销17插入限位孔21，锁定升降桌的当前高度。
优选地，先把升降桌升到最高处再对拉簧7固定端与桌架2之间的距离，因为升降桌在最高处时，拉簧7未拉开状态，受力较少，利于调节螺杆的调节。
实施例二
如图9和图10所示，本实施例二与实施例一基本相同，相同之处不再赘述，不同之处在于：在桌脚4内设有用于调节第一扭簧12扭力大小的调节旋钮20，具体地，调节旋钮20包括拔盘201，在拔盘201上方设有多个高度依次增高的支撑平台202，即多个支撑平台202沿一个方向按照由低到高依次排列，拔盘201部分露出桌脚4外，方便通过拔盘201调节第一扭簧12的扭力，当桌上负载增加时，在拔动拔盘201，使相应高度的支撑平台202位于第一扭簧12的端部下侧，升降桌下降时，第一支撑31顺时针转动，当转动到一定程度后，第一扭簧12的一端通过第二折弯部121随第一支撑部31的下端转动，其端部抵在位于下侧的支撑平台202，通过支撑平台202的高低不同，实现第一扭簧12的扭力调节。
优选地，第一扭簧12的档位与拉簧7的挡位具有对应关系，例如，拉簧7的一档对应第一扭簧12的一挡，拉簧7的二档对应第一扭簧12的二挡，使档位一一对应，方便调节。或者第一扭簧12的一档对应拉 簧7的一档和二档，第一扭簧12的二档对应拉簧7的三档和四档，以此类推，方便使用者调节，使二者均能与负载相适应。
优选地，相邻的两个支撑平台202之间通过渡面203连接，即使第一扭簧12的端部抵在支撑平台202时，也能够调节挡位。
初始状态下，调节旋钮20在最低档，即第一扭簧12在转动时端部抵在最低的支撑平台202，此时，与拉簧7的初始位置是对应的，桌上负载增加，通过调节拉簧7的固定端与桌架2的距离，来调节拉簧7的拉力，使升降桌下降的前段以及升高的后端保持平稳、省力，通过转动调节旋钮20，来调节第一扭簧12的扭力，为升降桌下降的后段提供缓冲以及升高的前端提供上升助力，使升降桌在下降和升高的过程能够平稳、省力和安全。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种升降桌，包括桌架、设置在所述桌架上方的桌面、设置在所述桌架两侧的两个X型升降架，每个所述X型升降架下侧均设有一个桌脚，其特征在于：每个所述X型升降架均包括第一支撑部和第二支撑部，所述第一支撑部和所述第二支撑部的中部铰接固定，且所述第一支撑部的上端与所述桌架滑动连接，下端与所述桌脚铰接固定，所述第二支撑部的上端与所述桌架铰接固定，下端与所述桌脚滑动连接；
    在所述第一支撑部的上端和所述第二支撑部的上端之间设有拉簧，所述拉簧的活动端与所述第一支撑部的上端连接，所述拉簧的固定端通过距离调节装置固定在所述桌架，所述距离调节装置用于调整拉簧固定端与所述桌架之间的距离。
  2. 根据权利要求1所述的升降桌，其特征在于：每个所述距离调节装置均包括拉簧固定件和调节螺杆，所述调节螺杆的一端穿过所述桌架后与所述拉簧固定件螺纹连接。
  3. 根据权利要求2所述的升降桌，其特征在于：每个所述拉簧固定件至少设有两个用于卡固拉簧的第一折弯部，且两个所述第一折弯部相对设置。
  4. 根据权利要求1所述的升降桌，其特征在于：所述第一支撑部与所述桌脚的铰接固定处设有第一扭簧，所述第一扭簧套设在所述第一铰接轴，且所述第一扭簧的一端设有第二折弯部，另一端抵在扭簧挡板，升降桌下降时，所述第一支撑部转动，其下端抵在所述第二折弯部并推动所述第一扭簧转动。
  5. 根据权利要求4所述的升降桌，其特征在于：所述桌脚内设有调节旋钮，所述调节旋钮包括拔盘，所述拔盘上方设有多个高度依次增高的支撑平台，所述拔盘部分露出桌脚外；
    升降桌下降时，所述第一支撑部转动，所述第一扭簧的一端通过 第二折弯部随第一支撑部的下端转动，使所述第一扭簧的另一端逐渐抵在其中一个支撑平台。
  6. 根据权利要求1所述的升降桌，其特征在于：所述第一支撑部的上端通过第一滑块与所述桌架滑动连接，所述第二支撑部的下端通过第二滑块与所述桌架滑动连接，且所述第一支撑部的上端与所述第一滑块铰接，所述第二支撑部的下端与所述第二滑块铰接。
  7. 根据权利要求6所述的升降桌，其特征在于：所述桌架间隔设置有多个限位孔；
    所述升降桌还包括所述锁止装置，所述锁止装置与所述第一滑块连接，其中，所述锁止装置包括：
    手柄，所述手柄通过第二铰接轴铰接固定在所述桌架，所述第二铰接轴套设有第二扭簧，用于为所述手柄提供回复力；
    插销封装盒，所述插销封装盒与所述第一滑块固定；
    插销，所述插销套设有弹簧挡板，且所述插销设置在所述插销封装盒内，所述插销的一端依次穿过插销封装盒和第一滑块后插入所述限位孔；
    弹簧，所述弹簧套设在所述插销，且所述弹簧的一端抵在所述弹簧挡板，并随所述弹簧挡板一起移动，用于为所述插销提供回复力；
    拉线，所述拉线的一端与所述手柄连接，另一端与所述插销连接，用于将所述插销从所述限位孔拉出。
  8. 根据权利要求1所述的升降桌，其特征在于：所述第一支撑部和所述第二支撑部的下端均向靠近对方的一侧折弯。
  9. 根据权利要求2所述的升降桌，其特征在于：所述桌架设有限位块，所述拉簧固定件至少部分抵在所述限位块，用于限定所述拉簧的初始位置。
  10. 根据权利要求2-9任一项所述的升降桌，其特征在于：所述桌架设有观察孔，能够显示所述拉簧固定件，在所述观察孔周边设置档位标记，所述拉簧固定件边缘所对应的档位标记为当前档位。
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