CN220694664U - Lifting upright post and electric lifting table - Google Patents

Abstract

The utility model discloses a lifting stand column and an electric lifting table, which belong to the field of linear actuators and solve the problem that a spiral cable in the lifting stand column is easy to generate noise due to overlarge shaking amplitude.

Description

Lifting upright post and electric lifting table

[ field of technology ]

The utility model relates to the field of linear actuators, in particular to a lifting upright post and an electric lifting table.

[ background Art ]

The lifting upright post is a common component in the field of linear driving equipment and is widely applied to equipment such as electric lifting tables, electric lifting beds and the like. Taking electric lift table as an example, electric lift table includes the table, locates crossbeam and two lift stands of table below, disposes the controller on the crossbeam, and the controller is connected with the motor electricity on two lift stands respectively for the operation of motor control motor is simultaneously supplied with power to the motor, generally, disposes power source on the crossbeam and is used for switching in the electric wire netting, and at the in-process that the table was lifting movement, the cable of connecting power source also can be along with the lift of table and activity, makes electric lift table around the space comparatively messy.

In order to solve the above problems, the cable is arranged in the lifting upright post to be hidden on the existing electric lifting table, the cable arranged in the lifting upright post can stretch and retract along with the stretching and retracting of the lifting upright post to keep the power supply to the electric equipment, but the telescopic cable has a longer length and is easy to shake radially, so that noise is generated due to the collision between the telescopic cable and the sleeve on the lifting upright post in the stretching and retracting process, and the use experience of a user is affected.

[ utility model ]

The utility model aims to solve the technical problems that the lifting upright post is provided for overcoming the defects of the prior art, and the problem that noise is easy to generate due to overlarge shaking amplitude of a spiral cable in the lifting upright post is solved.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the lifting stand column comprises a sleeve component, a driving assembly and a spiral cable, wherein the driving assembly is used for driving the sleeve component to stretch out and draw back, the spiral cable axially penetrates through the sleeve component, the spiral cable is arranged side by side with the driving assembly, the spiral cable stretches or contracts along with the stretching movement of the driving assembly, a guide column is further arranged on the side portion of the driving assembly, and the spiral cable encloses a containing space for containing the guide column.

On the basis of the scheme, the transmission assembly comprises a first telescopic component, a second telescopic component and a third telescopic component, wherein the first telescopic component and the third telescopic component are positioned in the second telescopic component and can stretch and retract relative to the second telescopic component, the spiral cable stretches or contracts along with the stretching and retracting of the first telescopic component and the third telescopic component relative to the second telescopic component, and the second telescopic component is provided with the guide post.

On the basis of the scheme, the first telescopic part is a first screw rod, the second telescopic part is an outer sleeve with a first transmission nut, the third telescopic part is an inner sleeve with a second transmission nut, the outer sleeve is sleeved outside the inner sleeve, the transmission assembly further comprises a second screw rod sleeved outside the first screw rod, the first screw rod can drive the second screw rod to synchronously rotate and can axially and relatively stretch out and draw back with the second screw rod, the first screw rod is in threaded fit with the first transmission nut, and the second screw rod is in threaded fit with the second transmission nut.

On the basis of the scheme, one end of the sleeve assembly is provided with a driving device, the driving device is in transmission connection with one end of the transmission assembly so as to drive the transmission assembly to stretch out and draw back, and the other end of the transmission assembly is connected with the other end of the sleeve assembly.

On the basis of the scheme, at least one of one end of the driving device and one end of the sleeve assembly, which is opposite to the driving device, is provided with the guide post.

On the basis of the scheme, the sleeve assembly sequentially comprises an inner pipe, a middle pipe and an outer pipe from inside to outside, the inner pipe and the outer pipe can stretch and retract relative to the middle pipe, the length of a spiral cable between one end of the inner pipe far away from the outer pipe and one end of the guide post is H1 in an elongation state of the sleeve assembly, the length of the spiral cable between one end of the outer pipe far away from the inner pipe and the other end of the guide post is H2, and the H1 is smaller than the H2.

On the basis of the scheme, the sleeve assembly sequentially comprises an inner pipe, a middle pipe and an outer pipe from inside to outside, the inner pipe and the outer pipe can stretch and retract relative to the middle pipe, and the guide post and the inner pipe are kept relatively fixed.

On the basis of the scheme, the lifting stand column further comprises a first wire fixing part and a second wire fixing part which are sequentially connected to the spiral wire in the axial direction of the spiral wire, the first wire fixing part and the second wire fixing part are used for respectively axially positioning two ends of the spiral wire, and the first wire fixing part and the second wire fixing part generate axial relative displacement along with the telescopic motion of the transmission assembly so that the spiral wire between the first wire fixing part and the second wire fixing part stretches or contracts.

On the basis of the scheme, the guide post is connected with the first wire fixing part or the second wire fixing part; or, two guide posts are provided, one guide post is connected with the first wire fixing part, and the other guide post is connected with the second wire fixing part.

The electric lifting table comprises a table plate and a lifting upright post disclosed in any technical scheme, wherein a controller is arranged on the table plate, and the spiral cable is electrically connected to the controller.

The utility model has the beneficial effects that:

the lifting stand column disclosed by the utility model comprises the sleeve component and the transmission assembly, wherein the spiral cable is arranged in the sleeve component and can stretch and retract along with the stretching and retracting of the transmission assembly, and after the design, the spiral cable of some electric equipment can be arranged in the sleeve component, so that the spiral cable can walk from the inside of the lifting stand column, the mess phenomenon caused by the exposure of the spiral cable is avoided, and a user cannot trip over the spiral cable when passing. The spiral cable is arranged on the side part of the transmission assembly, so that the spiral cable can be conveniently assembled, the lifting upright post can be conveniently assembled, and the spiral cable is not easy to interfere in the telescoping process.

The spiral cable can be driven when the transmission assembly stretches and contracts and stretches in the axial direction, the spiral cable stretches or contracts the in-process, the spiral cable can be caused to shake because of the change of length, the guide post is arranged on the side portion of the transmission assembly, the guide post is located in the accommodating space, radial positioning can be conducted on the spiral cable, the portion, which is subjected to the stop of the guide post, of the spiral cable cannot collide with the transmission assembly or the sleeve assembly to generate noise, the shake amplitude of the rest portions of the spiral cable can be reduced, and accordingly the spiral cable cannot collide with the sleeve assembly to generate noise in the stretching process of the transmission assembly, and even if collision occurs, the spiral cable cannot generate obvious noise because of small shake amplitude of the spiral cable.

Further, the transmission assembly comprises a first telescopic component, a second telescopic component and a third telescopic component, wherein the first telescopic component and the third telescopic component are positioned in the second telescopic component and can stretch or retract relative to the second telescopic component, the spiral cable stretches or contracts along with the stretching or retracting of the first telescopic component and the third telescopic component relative to the second telescopic component, and the second telescopic component is provided with the guide post. When the first telescopic component and the third telescopic component do telescopic motion, the first telescopic component and the third telescopic component can be simultaneously close to or far away from the second telescopic component, and the spiral cable moves along with the action of the first telescopic component and the third telescopic component, so that the spiral cable can be stretched or contracted. Under the same condition, the swing amplitude that the cable of length shorter produced is less, and the guide post is installed on the second telescopic member, and the guide post can be to the middle part region of helix cable or be close to the regional backstop in middle part, and on the helix cable telescopic direction, the helix cable was divided into three sections, is the helix cable of guide post both sides and the helix cable of guide post backstop within range respectively, and the swing amplitude of the helix cable of guide post both sides all obtains reducing.

Further, the first telescopic part is a first screw rod, the second telescopic part is an outer sleeve with a first transmission nut, the third telescopic part is an inner sleeve with a second transmission nut, the outer sleeve is sleeved outside the inner sleeve, the transmission assembly further comprises a second screw rod sleeved outside the first screw rod, the first screw rod can drive the second screw rod to synchronously rotate and can axially and relatively stretch out and draw back with the second screw rod, the first screw rod is in threaded fit with the first transmission nut, and the second screw rod is in threaded fit with the second transmission nut. The first screw rod is in threaded fit with the first transmission nut to stretch out and draw back relative to the outer sleeve and the second screw rod in the rotation process, the second screw rod is driven to rotate by the first screw rod in the rotation process, and the second screw rod is in threaded fit with the second transmission nut to drive the inner sleeve to stretch out and draw back relative to the outer sleeve.

Further, one end of the sleeve assembly is provided with a driving device, the driving device is in transmission connection with one end of the transmission assembly to drive the transmission assembly to stretch out and draw back, and the other end of the transmission assembly is connected with the other end of the sleeve assembly. The driving device can provide power required by telescopic movement for the transmission assembly, when the transmission assembly is telescopic, two ends of the transmission assembly are provided with relative displacement, one end of the sleeve assembly is connected with the driving device, and the other end of the sleeve assembly is connected with the transmission assembly, so that the sleeve assembly can be telescopic along with the telescopic movement of the transmission assembly.

Further, at least one of the drive device and one end of the sleeve assembly opposite to the drive device is provided with the guide post. Under the same condition, the swing amplitude generated by the cable with shorter length is smaller, the guide post is arranged on the driving device or the sleeve assembly, the part of the end part of the spiral cable can be radially stopped, and the length of the spiral cable outside the stopping range of the guide post is smaller than the distance between the first fixed line part and the second fixed line part, so that the swing amplitude of the spiral cable can be reduced. In addition, guide posts can be arranged on the driving device and the sleeve assembly to stop the two ends of the spiral cable simultaneously, so that the stop effect on the spiral cable is improved.

Further, the sleeve assembly comprises an inner pipe, a middle pipe and an outer pipe from inside to outside in sequence, the inner pipe and the outer pipe can stretch and retract relative to the middle pipe, the length of a spiral cable between one end of the inner pipe far away from the outer pipe and one end of the guide post is H1 in an elongation state of the sleeve assembly, the length of the spiral cable between one end of the outer pipe far away from the inner pipe and the other end of the guide post is H2, and the H1 is smaller than the H2. After the extension of the sleeve assembly, part of the spiral cable is positioned in the inner tube, part of the spiral cable is positioned in the outer tube, and the inner diameter of the inner tube is smaller than the inner diameter of the outer tube, so that the spiral cable in the inner tube is easier to collide with the wall of the inner tube by the same shaking amplitude, the blocking effect of the guide post on the spiral cable positioned in the inner tube can be enhanced by designing H1 to be smaller than H2, and the shaking amplitude of the spiral cable in the inner tube is smaller than that of the spiral cable in the outer tube. Although the vibration amplitude of the spiral cable in the outer tube is larger, the spiral cable is not easy to contact the tube wall of the outer tube due to the larger inner space of the outer tube.

Further, the sleeve assembly comprises an inner pipe, a middle pipe and an outer pipe from inside to outside in sequence, the inner pipe and the outer pipe can stretch and retract relative to the middle pipe, and the guide post and the inner pipe are kept relatively fixed. After the extension of the sleeve component, part of the spiral cable is positioned in the inner tube, part of the spiral cable is positioned in the outer tube, the inner diameter of the inner tube is smaller than the inner diameter of the outer tube, so that the same shaking amplitude is achieved, the spiral cable in the inner tube is easier to collide with the tube wall of the inner tube, the guide post can also generate axial displacement in the telescoping process of the sleeve component so as to be relatively fixed with the inner tube, the spiral cable positioned in the inner tube is stopped, the shaking amplitude of the spiral cable in the inner tube can be reduced, and the spiral cable is not easy to contact with the tube wall of the inner tube, and is larger in shaking amplitude in the outer tube, but is not easy to contact with the tube wall of the outer tube because of larger space in the outer tube.

Further, the lifting stand column further comprises a first wire fixing part and a second wire fixing part which are sequentially connected to the spiral wire in the axial direction of the spiral wire, the first wire fixing part and the second wire fixing part are used for respectively axially positioning two ends of the spiral wire, and the first wire fixing part and the second wire fixing part generate axial relative displacement along with the telescopic motion of the transmission assembly so that the spiral wire between the first wire fixing part and the second wire fixing part stretches or contracts. Through setting up first solidus portion and second solidus portion to make transmission assembly pass through first solidus portion and second solidus portion and transmit axial effort to spiral cable when flexible, in order to drive spiral cable and make telescopic movement in step.

Further, the guide post is connected with the first wire fixing part or the second wire fixing part; or, two guide posts are provided, one guide post is connected with the first wire fixing part, and the other guide post is connected with the second wire fixing part. The guide post is connected to the first wire fixing part or the second wire fixing part, so that the guide post can be assembled along with the installation of the first wire fixing part or the second wire fixing part, and the sleeve assembly and the transmission assembly do not need to be additionally provided with parts for installing the guide post.

The utility model also discloses an electric lifting table, which adopts the lifting upright post and has all the beneficial effects of the lifting upright post. Some electric equipment can be placed on the desk, and because the spiral cable is hidden in the lifting upright post, the power line of the electric equipment on the desk and the external spiral cable are not mutually wound, so that the power line and the external spiral cable are pulled in the lifting process of the desk. In the use process of the electric lifting table, the noise generated in the lifting upright post is small, and the use experience of a user cannot be influenced.

These features and advantages of the present utility model will be disclosed in detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The utility model is further described with reference to the accompanying drawings:

FIG. 1 is a schematic view of a lifting column according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a structure of an elongated lifting column according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a lifting column in an embodiment of the utility model;

FIG. 4 is a schematic view of an internal structure of a lifting column according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram illustrating the cooperation between the radial stop and the first wire fixing portion according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram illustrating the cooperation between the radial stopper and the second wire fixing portion according to an embodiment of the present utility model;

FIG. 7 is a schematic view illustrating the engagement of the radial stop with the second telescopic member according to an embodiment of the present utility model;

FIG. 8 is a schematic view of the installation of a plurality of radial stops within a lift column in accordance with an embodiment of the present utility model;

FIG. 9 is a schematic view illustrating the engagement of a plurality of radial stops with a second telescoping member according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a transmission assembly according to an embodiment of the present utility model.

Reference numerals:

an inner tube 100, an outer tube 110, a middle tube 120, and a routing cavity 130;

a first telescopic member 200, a second telescopic member 210, a third telescopic member 220, a first transmission nut 230, a second transmission nut 240, and a second screw 250;

a driving device 300;

a spiral wire 400 and an accommodating space 401;

a first wire fixing part 500 and a second wire fixing part 510;

a guide post 600, and a connecting post 610.

[ detailed description ] of the utility model

The technical solutions of the embodiments of the present utility model will be explained and illustrated below with reference to the drawings of the embodiments of the present utility model, but the following embodiments are only preferred embodiments of the present utility model, and not all embodiments. Based on the examples in the implementation manner, other examples obtained by a person skilled in the art without making creative efforts fall within the protection scope of the present utility model.

The appearances of the phrases such as "exemplary," "some embodiments," and the like in the following text are meant to be "serving as examples, embodiments, or illustrative," and any embodiment described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, it will be appreciated by those skilled in the art that the present disclosure may be practiced without some of these specific details.

Referring to fig. 1 to 10, the embodiment of the utility model discloses a lifting column, which is a three-section column and comprises a sleeve assembly and a transmission assembly arranged in the sleeve assembly, wherein the sleeve assembly comprises an inner pipe 100, an outer pipe 110 arranged outside the inner pipe 100 and a middle pipe 120 arranged between the inner pipe 100 and the outer pipe 110, the transmission assembly is used for driving the sleeve assembly to stretch, the transmission assembly comprises a first stretching component 200, a second stretching component 210 and a third stretching component 220, the first stretching component 200 and the third stretching component 220 are arranged in the second stretching component 210 and can stretch relative to the second stretching component 210, the inner pipe 100 and the outer pipe 110 can stretch relative to the middle pipe 120 when the transmission assembly stretches, the second stretching component 210 is positioned between the first stretching component 200 and the third stretching component 220 when the transmission assembly stretches, the driving device 300 is a motor box, and a motor which provides power required by stretching motion for the transmission assembly is arranged in the driving device 300.

The lifting stand column further comprises a spiral cable 400 penetrating through the inside of the sleeve component along the extending and contracting direction of the sleeve component, the spiral cable 400 can supply power to the transmission assembly, the spiral cable 400 is in a spiral shape and is provided with a plurality of coils of cables, when the transmission assembly extends, the screw pitch of the spiral cable 400 is increased, the whole body of the spiral cable is extended, when the transmission assembly is shortened, the screw pitch of the spiral cable 400 is reduced, and the whole body of the spiral cable is retracted. After such design, the cable of some consumer can be built-in the sleeve pipe subassembly to make the cable can follow the inside of lift stand and advance the walking line, can not cause the cable to expose the mess phenomenon that causes, the user also can not stumble by the cable when passing. A wiring cavity 130 for arranging the spiral cable 400 is formed between one side of the transmission assembly and the sleeve assembly, and the spiral cable 400 is arranged on the side of the transmission assembly side by side with the transmission assembly so as to facilitate the assembly of the spiral cable 400 and simultaneously facilitate the assembly of the lifting upright post.

The lifting upright post is further provided with a first wire fixing part 500 and a second wire fixing part 510 which are sequentially arranged along the extending and retracting direction of the spiral wire 400 and are used for axially positioning the spiral wire 400, the first wire fixing part 500 is relatively fixed with the first telescopic component 200, and the second wire fixing part 510 is relatively fixed with the third telescopic component 220. The first fixing portion 500 can move relative to the second fixing portion 510 along with the expansion and contraction of the first expansion and contraction member 200 relative to the second expansion and contraction member 210, and the second fixing portion 510 can move relative to the first fixing portion 500 along with the expansion and contraction of the third expansion and contraction member 220 relative to the second expansion and contraction member 210, so that the spiral cable 400 can extend and contract along with the relative displacement of the first fixing portion 500 and the second fixing portion 510.

In the prior art, the cable is usually directly connected between two fixed points about the lift stand, can produce radial rocking and collide with transmission assembly, sleeve pipe subassembly in the cable extension shrink process, produces the noise that influences user's use and experience, and in this application, the lateral part of transmission assembly still is equipped with guide post 600, and the accommodation space 401 that holds guide post 600 is enclosed to spiral cable 400, makes spiral cable 400 twine on guide post 600. At least a portion of the spiral cable 400 between the first wire fixing portion 500 and the second wire fixing portion 510 is wound around the guide post 600, the guide post 600 can stop the spiral cable 400 when the spiral cable 400 is rocked, the portion of the spiral cable 400 which is stopped by the guide post 600 cannot collide with the transmission assembly or the sleeve assembly to generate noise, under the same condition, the rocking amplitude generated by the cable with a shorter length is smaller, and the length of the spiral cable 400 outside the stopping range of the guide post 600 is smaller than the distance between the first wire fixing portion 500 and the second wire fixing portion 510, so that the rocking amplitude of the spiral cable 400 outside the stopping range of the guide post 600 can be reduced, the spiral cable 400 cannot collide with the sleeve assembly easily in the telescoping process of the transmission assembly to generate noise, and even if collision occurs, obvious noise cannot be generated due to the small rocking amplitude of the spiral cable 400.

Referring to fig. 1 to 3 and 10, in one embodiment of the present utility model, since the first and third telescopic members 200 and 220 are positioned in the second telescopic member 210 in the contracted state of the transmission assembly, the first and second wire fixing portions 500 and 510 cannot be directly mounted to the first and third telescopic members 200 and 220, and the first wire fixing portion 500 is connected to the driving device 300 and the second wire fixing portion 510 is connected to the opposite end of the sleeve assembly to the driving device 300 in order to maintain the first wire fixing portion 500 and the first and second telescopic members 200 and 510 and the third telescopic member 220 relatively fixed.

Referring to fig. 5 to 9, in one embodiment of the present utility model, at least one of the driving device 300, the end of the sleeve assembly to which the second fixing wire part 510 is mounted, and the second telescopic member 210 is provided with a guide post 600, based on the above-described embodiment.

Referring to fig. 5 or 6, the guide post 600 is disposed at one end of the second wire fixing portion 510 mounted on the driving device 300 or the sleeve assembly, so that a portion of the end of the spiral wire 400 can be radially stopped, and the spiral wire 400 between the first wire fixing portion 500 and the second wire fixing portion 510 can be divided into two portions, wherein one portion is the spiral wire 400 within the stopping range of the guide post 600, and the other portion is the spiral wire 400 outside the stopping range of the guide post 600, and radial shaking of the portion where the two wires are connected is limited due to the limitation of radial shaking of the spiral wire 400 within the stopping range of the guide post 600, that is, both ends of the spiral wire 400 outside the stopping range of the guide post 600 are fixed points (radial directions), and the length of the spiral wire 400 outside the stopping range of the guide post 600 is smaller than the distance between the first wire fixing portion 500 and the second wire fixing portion 510, so that the shaking amplitude of the spiral wire 400 can be reduced.

Referring to fig. 7, when the guide post 600 is mounted on the second telescopic member 210, the guide post 600 may stop the middle region or the region near the middle of the spiral wire 400, so that the spiral wire 400 between the first fixing wire portion 500 and the second fixing wire portion 510 may be divided into three parts, one part being the spiral wire 400 within the stop range of the guide post 600, and the other two parts being the spiral wires 400 at both sides of the guide post 600, the connection portions of the spiral wires 400 at both sides of the guide post 600 and the spiral wire 400 within the stop range of the guide post 600 being in a fixed state (radial direction) due to being radially limited, so that the wobbling amplitude of the spiral wire 400 at both sides of the guide post 600 may be reduced, and the two spiral wires 400 may be spaced apart by the guide post 600, so that radial wobbling between each other may not be transmitted to each other.

Referring to fig. 8 and 9, a plurality of guide posts 600 may be provided, and the guide posts 600 may be provided on any two of the driving device 300, the end of the sleeve assembly to which the second wire fixing portion 510 is mounted, and the second telescopic member 210, and the guide posts 600 may be provided on all three, and a plurality of guide posts 600 may be provided on the second telescopic member 210 to improve the stopping effect on the spiral wire 400.

Referring to fig. 5 to 9, in one embodiment of the present utility model, when the guide post 600 is provided at one end of the driving device 300 or the socket assembly where the second wire fixing portion 510 is installed, the guide post 600 may be connected to the first wire fixing portion 500 or the second wire fixing portion 510, so that the guide post 600 may be assembled with the installation of the first wire fixing portion 500 or the second wire fixing portion 510, and no additional components for installing the guide post 600 need be provided on the socket assembly and the transmission assembly.

When there are two guide posts 600, one guide post 600 may be connected to the first wire fixing portion 500, and the other guide post 600 may be connected to the second wire fixing portion 510, so that radial stops can be respectively performed on both ends of the spiral wire 400. The guide post 600 may be engaged with the first wire fixing portion 500 and the second wire fixing portion 510 by screw engagement, welding, plugging, interference engagement, fastening, engagement by a fastener, or the like.

In addition, the guide post can also be a telescopic rod, one end of the guide post is connected with the first wire fixing part, the other end of the guide post is connected with the second wire fixing part, and the guide post can stretch and retract along with the relative movement of the first wire fixing part and the second wire fixing part so as to have radial stop function on the whole spiral wire cable.

The above embodiment of the guide post 600 mounted on the second telescopic member 210 is also disclosed, when the guide post 600 is mounted on the second telescopic member 210, the guide post 600 is provided with a connecting post 610, and the guide post 600 is matched with the second telescopic member 210 through the connecting post 610, so that a clearance for the spiral cable to move is formed between the guide post 600 and the second telescopic member 210, and the connecting post 610 and the second telescopic member 210 can also be matched by adopting a welding mode, a matching mode through a fastener, a buckling mode or the like.

Referring to fig. 2 and 4, in an embodiment of the present utility model, the cross-sectional area of the sleeve assembly in the extended state is gradually increased along the arrangement direction of the first and second fixing wire parts 500 and 510, and in the extended state of the sleeve assembly, the length of the spiral wire 400 between the first fixing wire part 500 and one end of the guide post 600 is H1, and the length of the spiral wire 400 between the second fixing wire part 510 and the other end of the guide post 600 is H2, and H1 is smaller than H2.

After the sleeve assembly is stretched, part of the spiral cable 400 is positioned in the inner tube 100, part of the spiral cable 400 is positioned in the outer tube 110, and the inner diameter of the inner tube 100 is smaller than the inner diameter of the outer tube 110, so that the same shaking amplitude is achieved, the spiral cable 400 in the inner tube 100 can collide with the wall of the inner tube 100 more easily, the blocking effect of the guide post 600 on the spiral cable 400 positioned in the inner tube 100 can be enhanced by designing H1 to be smaller than H2, and the shaking amplitude of the spiral cable 400 in the inner tube 100 is smaller than that of the spiral cable 400 in the outer tube 110. Although the vibration amplitude of the spiral cable 400 in the outer tube 110 is larger, the spiral cable 400 is not easily contacted with the wall of the outer tube 110 due to the larger space in the outer tube 110.

Referring to fig. 7, the guide post 600 may be mounted on the second telescopic member 210, and a distance L1 of a center of the guide post 600 from the first wire fixing portion 500 is smaller than a distance L2 of a center of the second telescopic member 210 from the first wire fixing portion 500 such that H1 is smaller than H2.

Referring to fig. 5, in addition, the guide post 600 may be connected to the first wire fixing portion 500 such that the guide post 600 may remain relatively fixed with the inner tube 100. The guide post 600 also generates axial displacement during the telescoping process of the sleeve assembly, so as to be relatively fixed with the inner tube 100, thereby stopping the spiral cable positioned in the inner tube 100, reducing the shaking amplitude of the spiral cable 400 in the inner tube 100, so that the spiral cable 400 is not easy to contact with the wall of the inner tube 100, and the spiral cable 400 in the outer tube 110 is not easy to contact with the wall of the outer tube 110 due to larger space in the outer tube 110 although the shaking amplitude of the spiral cable 400 is larger.

Referring to fig. 3 and 10, in an embodiment of the present utility model, the second telescopic member 210 is an outer sleeve with a first transmission nut 230, the first telescopic member 200 is a first screw rod, the third telescopic member 220 is an inner sleeve with a second transmission nut 240, the transmission assembly further includes a second screw rod 250 sleeved outside the first screw rod, the first screw rod can drive the second screw rod 250 to rotate synchronously and can axially and oppositely stretch with the second screw rod 250, the inner sleeve is arranged in the outer sleeve, the second screw rod 250 and the first screw rod are arranged in the inner sleeve, the first screw rod is in threaded fit with the first transmission nut 230, and the second screw rod 250 is in threaded fit with the second transmission nut 240.

The first screw rod is in threaded fit with the first transmission nut 230 to stretch and retract relative to the outer sleeve and the second screw rod 250 in the rotating process, the second screw rod 250 is driven to rotate by the first screw rod in the rotating process, and the second screw rod 250 is in threaded fit with the second transmission nut 240 to drive the inner sleeve to stretch and retract relative to the outer sleeve.

The driving device 300 is used for driving the first screw rod to rotate, the first screw rod is in threaded fit with the first transmission nut 230 to stretch out and draw back relative to the outer sleeve and the second screw rod 250 in the rotating process, the second screw rod 250 is driven by the first screw rod to rotate in the rotating process, and the second screw rod 250 is in threaded fit with the second transmission nut 240 to drive the inner sleeve to stretch out and draw back relative to the outer sleeve.

Referring to fig. 3 and 4, in one embodiment of the present utility model, the first wire fixing part 500 includes a first wire clip, the second wire fixing part 510 includes a second wire clip, one end of the spiral wire 400 is fastened to the first wire clip and fixed, and the other end of the spiral wire 400 is fastened to the second wire clip and fixed, so that the spiral wire 400 between the first wire fixing part 500 and the second wire fixing part 510 may axially expand and contract according to the relative movement of the first wire fixing part 500 and the second wire fixing part 510.

The upper end of the inner tube 100 is opened, so that one end of the transmission assembly is in transmission fit with the driving device 300, the first wire fixing part 500 can be connected to the driving device 300, the second wire fixing part 510 is connected to the end of the outer tube 110, and the other end of the transmission assembly is connected to the end of the outer tube 110.

The utility model also discloses an electric table, which comprises a table plate, wherein the table plate is provided with a controller, the bottom of the table plate is provided with two lifting upright posts, one lifting upright post is the lifting upright post disclosed in any embodiment, the spiral cable is electrically connected with the controller, and the controller is respectively electrically connected with driving devices in the two lifting upright posts.

Some electric equipment can be placed on the desk, and because the spiral cable is hidden in the lifting upright post, the power line of the electric equipment on the desk and the external spiral cable are not mutually wound, so that the power line and the external spiral cable are pulled in the lifting process of the desk. And the electric lifting table is in the use, and the noise that produces in the lift stand is little, can not influence user's use experience.

While the utility model has been described in terms of embodiments, it will be appreciated by those skilled in the art that the utility model is not limited thereto but rather includes the drawings and the description of the embodiments above. Any modifications which do not depart from the functional and structural principles of the present utility model are intended to be included within the scope of the appended claims.

Claims (10)

1. The lifting upright post comprises a sleeve component, a driving assembly and a spiral cable, wherein the driving assembly is used for driving the sleeve component to stretch out and draw back, the spiral cable axially penetrates through the sleeve component, the spiral cable and the driving assembly are arranged side by side, and the spiral cable stretches or contracts along with the stretching movement of the driving assembly.

2. The lifting column according to claim 1, wherein the transmission assembly comprises a first telescopic member, a second telescopic member and a third telescopic member, the first telescopic member and the third telescopic member are located in the second telescopic member and can be telescopic relative to the second telescopic member, the spiral cable stretches or contracts along with the telescopic action of the first telescopic member and the third telescopic member relative to the second telescopic member, and the second telescopic member is provided with the guide post.

3. The lifting column according to claim 2, wherein the first telescopic component is a first screw rod, the second telescopic component is an outer sleeve with a first transmission nut, the third telescopic component is an inner sleeve with a second transmission nut, the outer sleeve is sleeved outside the inner sleeve, the transmission assembly further comprises a second screw rod sleeved outside the first screw rod, the first screw rod can drive the second screw rod to synchronously rotate and can axially and relatively stretch and retract with the second screw rod, the first screw rod is in threaded fit with the first transmission nut, and the second screw rod is in threaded fit with the second transmission nut.

4. The lifting column according to claim 1, wherein one end of the sleeve assembly is provided with a driving device, the driving device is in transmission connection with one end of the transmission assembly for driving the transmission assembly to stretch and retract, and the other end of the transmission assembly is connected with the other end of the sleeve assembly.

5. The lifting column of claim 4, wherein at least one of the drive means and an end of the sleeve assembly opposite the drive means is provided with the guide post.

6. The lifting column according to claim 1, wherein the sleeve assembly comprises an inner tube, a middle tube and an outer tube from inside to outside in sequence, the inner tube and the outer tube are telescopic relative to the middle tube, in an elongated state of the sleeve assembly, a spiral cable length between an end of the inner tube, which is far away from the outer tube, and an end of the guide post is H1, a spiral cable length between an end of the outer tube, which is far away from the inner tube, and the other end of the guide post is H2, and the H1 is smaller than the H2.

7. The lifting column of claim 1, wherein the sleeve assembly comprises an inner tube, a middle tube and an outer tube in that order from inside to outside, the inner tube and the outer tube being telescoping relative to the middle tube, the guide post and the inner tube remaining relatively fixed.

8. The lifting column according to claim 1, further comprising a first wire fixing portion and a second wire fixing portion which are sequentially connected to the spiral wire in the axial direction of the spiral wire, wherein the first wire fixing portion and the second wire fixing portion are used for respectively axially positioning two ends of the spiral wire, and the first wire fixing portion and the second wire fixing portion are used for generating axial relative displacement along with the telescopic motion of the transmission assembly so as to enable the spiral wire between the first wire fixing portion and the second wire fixing portion to extend or retract.

9. The lifting column of claim 8, wherein the guide post connects the first or second wire fixing portion; or, two guide posts are provided, one guide post is connected with the first wire fixing part, and the other guide post is connected with the second wire fixing part.

10. An electric lifting table, characterized by comprising a table board and a lifting column according to any one of claims 1 to 9, wherein a controller is arranged on the table board, and the spiral cable is electrically connected to the controller.