WO2022116783A1 - 具有单向刹车止锁功能的升降驱动装置及应用其的升降桌 - Google Patents
具有单向刹车止锁功能的升降驱动装置及应用其的升降桌 Download PDFInfo
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- WO2022116783A1 WO2022116783A1 PCT/CN2021/129633 CN2021129633W WO2022116783A1 WO 2022116783 A1 WO2022116783 A1 WO 2022116783A1 CN 2021129633 W CN2021129633 W CN 2021129633W WO 2022116783 A1 WO2022116783 A1 WO 2022116783A1
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- WIPO (PCT)
- Prior art keywords
- brake
- transmission shaft
- lifting
- brake seat
- column assembly
- Prior art date
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- 230000005540 biological transmission Effects 0.000 claims abstract description 43
- 238000009434 installation Methods 0.000 claims description 11
- 238000000429 assembly Methods 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims description 6
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 238000004904 shortening Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000000630 rising effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes
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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
- A47B13/00—Details of tables or desks
- A47B13/02—Underframes
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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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
- 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 electric lift tables, in particular to a lift drive device with a one-way brake locking function and a lift table using the same.
- the electric lift table can change the height of the table body to meet people's individual needs, so that people can work and study in the most comfortable posture.
- the electric lifting table currently on the market generally uses a motor-driven screw elevator to achieve the lifting function.
- the industry usually adopts the shortening of the screw lead of the screw elevator to achieve this.
- the electric lifting table cannot be stopped under a certain load, that is, the lifting structure after the electric lifting table is loaded.
- the desktop In the process of driving the heavy-loaded desktop to descend, the desktop cannot be locked, and the desktop sliding phenomenon occurs.
- the technical problem to be solved by the present invention is to provide a one-way brake locking function which can prevent the electric lifting table from sliding down when the load increases, aiming at the problem that the electric lifting table cannot be locked under the condition of heavy load, and the phenomenon of sliding occurs. Lifting drive.
- the present invention provides a lifting drive device with a one-way brake locking function, which includes a transmission shaft and a lifting column assembly, the transmission shaft is drivingly connected to the power input end in the lifting column assembly, for powering the elongation and shortening of the lifting column assembly;
- a locking structure is installed on the transmission shaft.
- the locking structure includes a brake seat shell, a brake seat and a brake spring.
- the brake seat shell is sleeved on the transmission shaft with clearance fit; the brake seat is sleeved with an interference fit. on the transmission shaft; the brake spring is fitted on the brake seat; an installation groove is arranged in the brake seat shell, and the brake seat is installed in the installation groove; the brake spring is a coil spring, The rotation direction of the coil spring is consistent with the rotation direction of the transmission shaft and the brake seat when the lifting column assembly is extended, and the coil spring has a first end and a second end, and the first end is The installation groove is limited, and the second end is in a free state.
- a limit groove is provided on the installation groove, and the first end extends into the limit groove and is limited by the limit groove.
- the brake spring is a cylindrical coil spring formed by winding a spring wire with a square section, and the inner wall of the brake spring is in interference fit with the outer surface of the brake seat.
- a motor is also included, and the output shaft of the motor is drive-connected to the transmission shaft for driving the transmission shaft to rotate.
- a support member is fixedly installed on the lifting column assembly
- the motor is fixedly installed on one side of the support member
- the locking structure is fixedly installed on the other side of the support member
- the transmission shaft connects the The motor, the support, the locking structure and the lifting column components are installed in series.
- a fixing gasket is arranged between the motor and the support.
- the present invention also provides a lift table, which includes the above-mentioned lift drive device with a one-way braking and locking function, and a table top, which is fixedly installed on the top of the lift column assembly.
- the transmission shaft is simultaneously connected to the power input ends in the two lifting column assemblies.
- it also includes a table corner stabilization component, which is fixedly installed on the bottom end of the lifting column component.
- the invention realizes the one-way brake locking when the lifting column assembly is retracted, and avoids the sliding down when the lifting column assembly is under load.
- Fig. 1 is an exploded view of the parts and components of the lift drive device with the one-way brake locking function of the present invention
- Fig. 2 is the perspective view of the lift drive device with one-way brake locking function of the present invention
- Fig. 3 is the front structural view of the brake seat installed with the brake spring of the present invention.
- Fig. 4 is the three-dimensional structural view of the brake spring of the present invention.
- FIG. 5 is a schematic three-dimensional structural diagram of the brake seat of the present invention not being installed in the brake seat housing;
- FIG. 6 is a schematic three-dimensional structure diagram of the brake seat of the present invention being installed in the brake seat housing;
- Fig. 7 is the front view structure schematic diagram of the brake seat of the present invention being installed in the brake seat shell;
- FIG. 8 is a schematic structural diagram of the bottom end of the lifting table according to the present invention.
- Fig. 9 is the front schematic diagram of the lifting table of the present invention.
- FIG. 10 is a cross-sectional view of an embodiment of the lifting column assembly of the present invention.
- Figure 11 is an enlarged view of the A part of Figure 10;
- An embodiment of a lift drive device with a one-way brake locking function provided by the present invention includes a transmission shaft 1, a motor 2, a fixing gasket 3, a support 4, and a brake seat shell 5.
- the output shaft of the motor 2 is fixedly connected to the transmission shaft 1, and the two ends of the transmission shaft 1 are respectively connected to the power input end in a lifting column assembly 8 of the electric lifting table, and the transmission shaft 1 is driven by the motor 2, which is the lifting column assembly 8.
- the elongation and shortening provide the power.
- lifting column assembly 8 There are various prior art embodiments of the lifting column assembly 8. As shown in Figures 10-11, it is a common embodiment of the lifting column assembly 8, including an outer tube 81, an inner tube 82, an input shaft 83, The screw 84, the screw nut 85, the outer tube 81 and the inner tube 82 are all hollow structures.
- the inner tube 82 moves along the inner wall of the outer tube 81 relative to the lengthwise extension direction of the outer tube 81; the screw rod 84 is fixedly arranged inside the outer tube 81 along the lengthwise extension direction of the outer tube 81, and the screw rod 84 is partially located in the inner tube 82 Inside, the screw 84 rotates with the length extending direction of the outer tube 81 as the axis; the screw nut 85 is fixedly arranged inside the inner tube 82 and cooperates with the screw 84; the input shaft 83 is rotated and installed along the fixed axis Inside the outer tube 81, it is connected with the transmission shaft 1 through gear or belt drive connection or fixedly connected to each other with the end face, and is connected with the screw 84 through gear transmission.
- the lead screw 84 and the lead screw nut 85 cooperate with each other to change the relative position of the lead screw nut 85 on the lead screw 84 , thereby driving the inner tube 82 to move along the extension direction of the outer tube 81 .
- a locking structure is also installed on the transmission shaft 1.
- the locking structure includes a brake seat housing 5 installed on the transmission shaft 1 with clearance fit, a brake seat 7 installed on the transmission shaft 1 with an interference fit, and a brake seat 7 installed on the brake seat 7 with an interference fit.
- the brake spring 6 is installed on the outer surface of the brake seat 7 with its inner wall interference fit.
- the brake spring 6 is a coil spring wound by a spring wire, and the rotation direction of the brake spring 6 is consistent with the rotation direction of the transmission shaft 1 and the brake seat 7 when the lifting column assembly 8 is extended.
- the brake spring 6 has a first end 61 and a second end 62 , a limit groove 511 is set on the installation groove 51 , and the first end 61 of the brake spring 6 extends into the limit groove 511 and is clamped by the limit groove 511 , so that the brake spring 6 will be limited and cannot rotate, and the second end 62 is not restricted in the installation groove 51, that is, the second end 62 is in a free state, so that when the brake seat 7 rotates, the brake spring 6
- the inner diameter will increase or decrease, that is, the frictional force between the brake seat 7 and the brake spring 6 will decrease or increase, thereby reducing or increasing the rotational resistance of the transmission shaft 1 .
- the brake seat 7 is preferably made of engineering materials with high rigidity, so that the brake seat 7 has the mechanical properties of high wear resistance and high strength.
- the brake spring 6 is preferably a cylindrical coil spring processed from a spring wire with a square cross-section, and the surface of the brake spring 6 is polished, and the surface is smooth, so that the contact surface of the brake spring 6 and the brake seat 7 is larger, and the brake spring 6 has a larger contact surface.
- the inner wall cooperates more closely with the outer circular surface of the brake seat 7 .
- the support member 4 is installed on the transmission shaft 1 with clearance fit, and at the same time, the support member 4 is fixedly connected with the lifting column assembly 8 .
- the motor 2 and the locking structure are fixedly installed on both sides of the support member 4 through bolts, and a fixing gasket 3 is also installed between the motor 2 and the support member 4 .
- the drive shaft 1 When the lift drive device is in use, when the motor 2 rotates in the forward direction, the drive shaft 1 is driven to rotate, the lift column assembly 8 is elongated, and the drive shaft 1 drives the brake base 7 to rotate forward.
- the transmission shaft 1 and the brake seat 7 rotate in the same direction during extension, so the brake seat 7 rotates along the rotation direction of the brake spring 6.
- the first end 61 of the brake spring 6 is limited by the brake seat housing 5
- the groove 511 is fixed, and the second end 62 is in a free state, so the inner diameter of the brake spring 6 is enlarged, and the frictional force between the brake seat 7 and the brake spring 6 is reduced, that is, the brake spring 6 will not affect the elongation of the lifting column assembly. .
- the above description takes the active rotation of the motor 2 as an example, but the present invention is not limited to this.
- the lifting column assembly 8 is loaded, so that the lifting column assembly 8 has a downward movement trend, and at the same time
- the drive shaft 1 has a tendency of passive reverse rotation
- the brake seat 7 also has a passive reverse rotation trend. Due to the rotation direction of the brake spring 6 and the rotation direction of the drive shaft 1 and the brake seat 7 when the lifting column assembly 8 is extended Therefore, the inner diameter of the brake spring 6 is reduced, the friction force between the brake seat 7 and the brake spring 6 increases, and the shrinkage resistance of the lifting column assembly 8 increases, that is, the lifting column assembly 8 is locked by the brake spring 6 .
- the present invention also provides a lift table, as shown in Figures 8-9, the lift drive device is applied in the lift table, and when the motor 2 is set to rotate forward, the lift column assembly 8 is extended; the lift table also includes The desktop 9 is fixedly installed on the top of the lifting column assembly.
- the lifting table is preferably also provided with a table corner stabilization assembly 10, which is fixedly installed at the bottom end of the lifting column assembly 8.
- the table corner stabilization assembly 10 can extend along the width direction of the desktop, increase the contact surface between the lifting table and the ground, and improve the overall lifting table. stability.
- the elevating drive device of the present invention is not limited to the application mode of the elevating table.
- the present invention can also be applied to the locking of the transmission shaft of the non-electric elevating table.
- the lifting column assembly 8 is retracted.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
一种具有单向刹车止锁功能的升降驱动装置及应用其的升降桌，该升降驱动装置包括传动轴(1)和升降立柱组件(8)，传动轴与升降立柱组件内的动力输入端传动连接；传动轴上安装止锁结构，止锁结构包括刹车座外壳(5)、刹车座(7)和刹车弹簧(6)，刹车座外壳间隙配合套装在传动轴上；刹车座过盈配合套装在传动轴上；刹车弹簧贴合套装在刹车座上；刹车座外壳内设置安装槽(51)，刹车座安装在安装槽内；刹车弹簧为螺旋弹簧，螺旋弹簧的旋向与升降立柱组件伸长时的传动轴及刹车座的转动方向一致，且螺旋弹簧具有第一端头(61)和第二端头(62)，第一端头被安装槽限位，第二端头呈自由状态。
Description
本发明涉及电动升降桌技术领域，尤其涉及具有单向刹车止锁功能的升降驱动装置及应用其的升降桌。
电动升降桌可改变桌体的高度，以满足人们的个性化需求，使人们在最舒适的姿态下工作学习。
如中国专利CN209732949U所示，目前市场上的电动升降桌普遍使用电机驱动螺旋升降机实现升降的功能。为了实现电动升降桌升降速度的提升，行业中通常采用缩短螺旋升降机的丝杆导程来实现，导致这种电动升降桌在一定的负重情况下无法实现止停，即电动升降桌承重后升降结构在驱动大负重桌面下降过程中无法止锁桌面，而出现桌面下滑现象。
发明内容
本发明所要解决的技术问题是，针对电动升降桌在大负重情况下无法止锁，出现下滑现象的不足，提供一种能阻止电动升降桌在负重增加时下滑的具有单向刹车止锁功能的升降驱动装置。
为解决上述技术问题，本发明提供了一种具有单向刹车止锁功能的升降驱动装置，包括传动轴和升降立柱组件，所述传动轴与所述升降立柱组件内的动力输入端传动连接，用于为所述升降立柱组件的伸长和缩短提供动力；
所述传动轴上安装止锁结构，所述止锁结构包括刹车座外壳、刹车座和刹车弹簧，所述刹车座外壳间隙配合套装在所述传动轴上；所述刹车座过盈配合套装在所述传动轴上；所述刹车弹簧贴合套装在所述刹车座上；所述刹车座外壳内设置安装槽，所述刹车座安装在所述安装槽内；所述刹 车弹簧为螺旋弹簧，所述螺旋弹簧的旋向与所述升降立柱组件伸长时的传动轴及刹车座的转动方向一致，且所述螺旋弹簧具有第一端头和第二端头，所述第一端头被所述安装槽限位，所述第二端头呈自由状态。
进一步地，所述安装槽上设置限位槽，所述第一端头伸入所述限位槽中并被所述限位槽限位。
进一步地，所述刹车弹簧是采用方形截面的弹簧线绕制而成的圆柱状螺旋弹簧，且所述刹车弹簧的内壁与所述刹车座的外圆表面过盈配合。
进一步地，还包括电机，所述电机的输出轴与所述传动轴传动连接，用于带动所述传动轴转动。
进一步地，所述升降立柱组件上固定安装支撑件，所述支撑件的一侧固定安装所述电机，所述支撑件的另一侧固定安装所述止锁结构，所述传动轴将所述电机、支撑件、止锁结构及升降立柱组件串联安装。
进一步地，所述电机与所述支撑件之间设置固定垫片。
本发明还提供一种升降桌，包括上述的具有单向刹车止锁功能的升降驱动装置，还包括桌面，固定安装在所述升降立柱组件的顶端。
进一步地，升降立柱组件设置有两个，且对称设置在所述桌面的两侧；所述传动轴同时与两个所述升降立柱组件内的动力输入端传动连接。
进一步地，还包括桌角稳定组件，固定安装在所述升降立柱组件的底端。
与现有技术相比，本发明的有益效果是：
本发明实现了升降立柱组件收缩时的单向刹车止锁，避免了升降立柱组件负重时的下滑。
试验证实，测试产品在没有增加本发明结构测试承重时，负重80公斤情况下，电动升降桌即出现下滑现象，无法止锁。当本发明使用在单电机的电动升降桌上时，同一台产品进行负重测试时，160公斤负重时还可以实 现止锁，无下滑现象。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明具有单向刹车止锁功能的升降驱动装置的零部件分解图；
图2为本发明具有单向刹车止锁功能的升降驱动装置的立体图；
图3为本发明安装有刹车弹簧的刹车座的主视结构图；
图4为本发明刹车弹簧的立体结构图；
图5为本发明刹车座未安装到刹车座外壳内的立体结构示意图；
图6为本发明刹车座安装到刹车座外壳内的立体结构示意图；
图7为本发明刹车座安装到刹车座外壳内的正视结构示意图；
图8为本发明升降桌底端的结构示意图；
图9为本发明升降桌的正面示意图；
图10为本发明升降立柱组件的一种实施例剖面图；
图11为图10的A处放大图；
图中：1、传动棒；2、电机；3、固定垫片；4、支撑件；5、刹车座外壳；51、安装槽；511、限位槽；6、刹车弹簧；61、第一端头；62、第二端头；7、刹车座；8、升降立柱组件；81、外管；82、内管；83、输入轴；84、丝杆；85、丝杆螺母；9、桌面；10、桌角稳定组件。
以下结合具体优选的实施例对本发明作进一步描述，但并不因此而限制本发明的保护范围。
为了便于描述，各部件的相对位置关系，如：上、下、左、右等的描述均是根据说明书附图的布图方向来进行描述的，并不对本专利的结构起限定作用。
本发明提供的一种具有单向刹车止锁功能的升降驱动装置一实施例，如图1－图7所示，包括传动轴1、电机2、固定垫片3、支撑件4、刹车座外壳5、刹车弹簧6、刹车座7、升降立柱组件8。
电机2的输出轴固定连接传动轴1，且传动轴1的两端分别与电动升降桌的一升降立柱组件8内的动力输入端传动连接，通过电机2驱动传动轴1，为升降立柱组件8的伸长和缩短提供动力。
升降立柱组件8已有多种现有技术的实施例，如图10－图11所示，为升降立柱组件8的一种常用的实施例，包括外管81、内管82、输入轴83、丝杆84、和丝杆螺母85，外管81和内管82均为中空结构，内管82沿外管81长度延伸方向设置于外管81内部，且一端局部突出于外管81，另一端位于外管81内，内管82沿外管81内壁关于外管81长度延伸方向移动；丝杆84沿外管81长度延伸方向固定设置于外管81内部，且丝杆84局部位于内管82内部，丝杆84以外管81长度延伸方向为轴心进行旋转；丝杆螺母85，丝杆螺母85固定设置于内管82内部，且与丝杆84相互配合；输入轴83沿固定轴线转动安装在外管81内部，与传动轴1通过齿轮或皮带传动连接或端面相互固定连接，并且与丝杆84通过齿轮传动连接，在电机2带动传动轴1转动后，输入轴83会跟着转动，最后使丝杆84转动，丝杆84与丝杆螺母85相互配合改变丝杆螺母85位于丝杆84上的相对位置，从而带动内管82沿外管81长度延伸方向移动。
传动轴1上还安装止锁结构，止锁结构包括间隙配合安装在传动轴1上的刹车座外壳5、过盈配合安装在传动轴1上的刹车座7、过盈配合安装在刹车座7上的刹车弹簧6，且刹车弹簧6以其内壁过盈配合安装在刹车座 7的外圆面上，装有刹车弹簧6的刹车座7安装到刹车座外壳5内的安装槽51中。刹车弹簧6是由弹簧线绕制的螺旋弹簧，且刹车弹簧6的旋向与升降立柱组件8伸长时的传动轴1及刹车座7的转动方向一致。刹车弹簧6具有第一端头61和第二端头62，安装槽51上设置限位槽511，刹车弹簧6的第一端头61伸入限位槽511内并被限位槽511卡固，使刹车弹簧6会被限位而不能够转动，第二端头62在安装槽51中不受限，即第二端头62呈自由状态，使得在刹车座7转动时，刹车弹簧6的内径会放大或缩小，即刹车座7与刹车弹簧6之间的摩擦力会减小或增大，进而使传动轴1的旋转阻力减小或增大。
刹车座7优选使用高刚性能的工程材料制成，使刹车座7具有高耐磨高强度的机械特性。刹车弹簧6优选采用方形截面的弹簧线加工而成的圆柱状螺旋弹簧，且刹车弹簧6的表面进行抛光处理，表面光滑，使得刹车弹簧6与刹车座7的接触面更大，刹车弹簧6的内壁与刹车座7的外圆表面配合更紧密。
支撑件4间隙配合安装在传动轴1上，同时支撑件4与升降立柱组件8固定连接。电机2和止锁结构经螺栓固定安装在支撑件4的两侧，且电机2与支撑件4之间还安装有固定垫片3。
本升降驱动装置使用时，电机2正向转动时驱动传动轴1转动，升降立柱组件8伸长，同时传动轴1驱动刹车座7正向转动，由于刹车弹簧6的旋向与升降立柱组件8伸长时的传动轴1及刹车座7的转动方向一致，故刹车座7沿刹车弹簧6的旋向转动，此时，因为刹车弹簧6的第一端头61被刹车座外壳5的限位槽511卡固，第二端头62呈自由状态，故刹车弹簧6的内径放大，刹车座7与刹车弹簧6之间的摩擦力减小，即刹车弹簧6不会影响升降立柱组件的伸长。当电机2反向转动时，电机2驱动传动轴1也反向转动，升降立柱组件8收缩，同时传动轴1驱动刹车座7反向转动， 刹车座7沿刹车弹簧6的旋向反向转动，同理，因为刹车弹簧6的第一端头61被刹车座外壳5的限位槽511卡固，第二端头62呈自由状态，故刹车弹簧6的内径缩小，刹车座7与刹车弹簧6之间的摩擦力增加，升降立柱组件8的收缩阻力变大，使升降立柱组件8在收缩到一定长度后被刹车弹簧6止锁。显然，上述以电机2的主动转动为例进行说明，但本发明并不局限于此，当电机2没有启动时，升降立柱组件8负重，使得升降立柱组件8有向下收缩运动的趋势，同时传动轴1有被动反向转动的趋势，刹车座7同时也具有被动反向转动的趋势，由于刹车弹簧6的旋向与升降立柱组件8伸长时的传动轴1及刹车座7的转动方向一致，故刹车弹簧6的内径缩小，刹车座7与刹车弹簧6之间的摩擦力增加，升降立柱组件8的收缩阻力变大，即升降立柱组件8被刹车弹簧6止锁。
本发明还提供了一种升降桌，如图8－图9所示，上述升降驱动装置被应用在升降桌中，并设定电机2正转时，升降立柱组件8伸长；升降桌还包括桌面9，固定安装在升降立柱组件的顶端。升降立柱组件8优选设置有两个，且对称设置在桌面9的两侧，并且传动轴同时与两个升降立柱组件内的动力输入端传动连接，保证桌面9在上升或下降的过程中两边均能够有受力点，且受力点上升或下降的速度保持一致，从而保证桌面9在上升或下降的过程中的稳定性。升降桌优选还设置桌角稳定组件10，固定安装在升降立柱组件8的底端，桌角稳定组件10可沿桌面的宽度方向进行延伸，加大升降桌与地面的接触面，提高升降桌整体的稳定性。
很明显，本发明的升降驱动装置并不局限于升降桌的应用方式，比如，本发明也可运用于非电动升降桌的传动轴止锁，本发明中也可设定电机2正转时，升降立柱组件8收缩。
以上所述，仅是本申请的较佳实施例，并非对本申请做任何形式的限制，虽然本申请以较佳实施例揭示如上，然而并非用以限制本申请，任何 熟悉本专业的技术人员，在不脱离本申请技术方案的范围内，利用上述揭示的技术内容做出些许的变动或修饰均等同于等效实施案例，均属于技术方案范围内。
Claims (9)
- 一种具有单向刹车止锁功能的升降驱动装置，其特征在于，包括传动轴(1)和升降立柱组件(8)，所述传动轴与所述升降立柱组件内的动力输入端传动连接，用于为所述升降立柱组件的伸长和缩短提供动力；所述传动轴上安装止锁结构，所述止锁结构包括刹车座外壳(5)、刹车座(7)和刹车弹簧(6)，所述刹车座外壳间隙配合套装在所述传动轴上；所述刹车座过盈配合套装在所述传动轴上；所述刹车弹簧贴合套装在所述刹车座上；所述刹车座外壳内设置安装槽(51)，所述刹车座安装在所述安装槽内；所述刹车弹簧为螺旋弹簧，所述螺旋弹簧的旋向与所述升降立柱组件伸长时的传动轴及刹车座的转动方向一致，且所述螺旋弹簧具有第一端头(61)和第二端头(62)，所述第一端头被所述安装槽限位，所述第二端头呈自由状态。
- 根据权利要求1所述的具有单向刹车止锁功能的升降驱动装置，其特征在于，所述安装槽上设置限位槽(511)，所述第一端头伸入所述限位槽中并被所述限位槽限位。
- 根据权利要求1所述的具有单向刹车止锁功能的升降驱动装置，其特征在于，所述刹车弹簧是采用方形截面的弹簧线绕制而成的圆柱状螺旋弹簧，且所述刹车弹簧的内壁与所述刹车座的外圆表面过盈配合。
- 根据权利要求1中任一项所述的具有单向刹车止锁功能的升降驱动装置，其特征在于，还包括电机(2)，所述电机的输出轴与所述传动轴传动连接，用于带动所述传动轴转动。
- 根据权利要求4所述的具有单向刹车止锁功能的升降驱动装置，其特征在于，所述升降立柱组件上固定安装支撑件(4)，所述支撑件的一侧固定安装所述电机，所述支撑件的另一侧固定安装所述止锁结构，所述传动轴将所述电机、支撑件、止锁结构及升降立柱组件串联安装。
- 根据权利要求5所述的具有单向刹车止锁功能的升降驱动装置，其 特征在于，所述电机与所述支撑件之间设置固定垫片。
- 一种升降桌，包括如权利要求1～6任一项所述的具有单向刹车止锁功能的升降驱动装置，其特征在于，还包括桌面(9)，固定安装在所述升降立柱组件的顶端。
- 根据权利要求7所述的升降桌，其特征在于，升降立柱组件设置有两个，且对称设置在所述桌面的两侧；所述传动轴同时与两个所述升降立柱组件内的动力输入端传动连接。
- 根据权利要求7所述的升降桌，其特征在于，还包括桌角稳定组件(10)，固定安装在所述升降立柱组件的底端。
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| CN104872994A (zh) * | 2015-05-29 | 2015-09-02 | 杭州德昌五金家具有限公司 | 电动升降装置 |
| EP3244084A1 (en) * | 2016-05-09 | 2017-11-15 | Dellner Brakes AB | Braking device for a rotary shaft or running rail |
| CN209915306U (zh) * | 2019-01-24 | 2020-01-10 | 绍兴康拓传动科技有限公司 | 一种防下滑丝杆升降立柱 |
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| CN102594014A (zh) * | 2012-01-19 | 2012-07-18 | 宁波杜亚机电技术有限公司 | 一种管状电机制动装置 |
| CN104872994A (zh) * | 2015-05-29 | 2015-09-02 | 杭州德昌五金家具有限公司 | 电动升降装置 |
| EP3244084A1 (en) * | 2016-05-09 | 2017-11-15 | Dellner Brakes AB | Braking device for a rotary shaft or running rail |
| CN209915306U (zh) * | 2019-01-24 | 2020-01-10 | 绍兴康拓传动科技有限公司 | 一种防下滑丝杆升降立柱 |
| CN112398273A (zh) * | 2020-12-04 | 2021-02-23 | 南通市久正人体工学股份有限公司 | 一种具有单向刹车止锁功能的升降驱动装置 |
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