CN117322726A

CN117322726A - Interior line lift stand and electronic lift table of walking

Info

Publication number: CN117322726A
Application number: CN202311222702.XA
Authority: CN
Inventors: 项乐宏; 蒋领辉; 陶闽泉; 吴凯
Original assignee: Loctek Ergonomic Technology Co Ltd
Current assignee: Loctek Ergonomic Technology Co Ltd
Priority date: 2023-09-21
Filing date: 2023-09-21
Publication date: 2024-01-02

Abstract

The invention discloses an inner wiring lifting upright post and an electric lifting table, wherein the inner wiring lifting upright post comprises a motor component; the telescopic pipe assembly comprises an inner pipe and an outer pipe, the inner pipe and the outer pipe are mutually nested and can axially slide and stretch relatively, and the inner pipe is connected with the motor assembly; a linear driving mechanism including a first moving member and a second moving member; the first moving part is in transmission connection with the motor assembly, and the second moving part is connected with the telescopic pipe assembly; the pulley assembly comprises a first pulley and a second pulley, and the first pulley is connected to the inner tube; the second pulley is connected to the second moving part; the first end of the power line in the inner tube is electrically connected with the motor assembly, and the second end of the power line bypasses the first pulley and the second pulley in sequence and is electrically connected with a power socket at one end, far away from the motor assembly, of the telescopic tube assembly. The internal wiring lifting upright post and the electric lifting table can effectively prevent the power line from winding and knotting, and prevent or reduce the occurrence of line blocking, power failure and electric leakage.

Description

Interior line lift stand and electronic lift table of walking

Technical Field

The application relates to the technical field of furniture equipment, in particular to an internal wiring lifting upright post and an electric lifting table.

Background

The lifting table is a table with the height capable of being adjusted in a lifting manner, and the proper height can be adjusted according to the height of a user so as to meet the requirements of the user. The lifting table has a wider application range, and can be applied to office tables, learning tables, electronic competition tables, body-building tables and the like. The structure of the common lifting table generally comprises a table plate, a cross beam, two lifting upright posts, a base and the like, wherein the two lifting upright posts are connected with the table plate and the base and are used for adjusting the height of the table plate relative to the base; the outgoing power line of the driving motor of the electric lifting table in the related art is connected with an indoor power socket to take electricity, and the outgoing power line of the driving motor is generally exposed outside. In order to prevent the power line exposed outside from being accidentally touched or the plug of the power line from being accidentally pulled and loosened when the electric lifting table is lifted, people set the power line led out of the driving motor inside the lifting upright post, namely the lifting upright post adopts an inner wiring lifting upright post, and the inner wiring lifting upright post sets the power line into a spiral line or a spring line capable of being longitudinally unfolded or reset in order to enable the length of the power line to adapt to the height change of the lifting upright post.

The internal wiring lifting upright post in the related art has the following defects in the actual use process: when the lifting upright post expands or contracts, because the elastic space of the spiral power line or the spring line is larger and the spiral power line or the spring line is arranged to be loose, the spiral power line or the spring line is easy to wind and knot, and even interferes with other parts such as a linear driving mechanism in the lifting upright post, a sliding block in a lifting upright post pipe and the like; therefore, the circuit is blocked, and risks such as power failure and electric leakage are caused, so that the safe use of the electric lifting table is affected.

Disclosure of Invention

The technical problem that this application will solve is, overcomes the defect of above related art, provides a flexible or when going up and down, can effectively avoid the power cord winding to tie a knot, prevents or reduces the interior line lift stand of going up and down that the circuit card is dead, outage, electric leakage appears.

The technical solution of the application is to provide an internal wiring lifting upright post with the following structure: it comprises

A motor assembly;

the telescopic pipe assembly comprises an inner pipe and an outer pipe, the inner pipe and the outer pipe are mutually nested and can axially slide and stretch relatively, and the inner pipe is fixedly connected with the motor assembly;

a linear driving mechanism disposed within the inner tube, the linear driving mechanism including a first moving member and a second moving member axially movable relative to the first moving member; the first moving part is in transmission connection with the motor assembly, and the second moving part is connected with the telescopic tube assembly and used for driving the telescopic tube assembly to expand or contract;

a pulley assembly comprising a first pulley and a second pulley, the first pulley being connected to the inner tube; the second pulley is connected to the second moving part and can synchronously move axially along with the second moving part;

the power cord is arranged in the inner tube, the first end of the power cord is electrically connected with the motor assembly, and the second end of the power cord is electrically connected with a power socket at one end, far away from the motor assembly, of the telescopic tube assembly after bypassing the first pulley and the second pulley in sequence.

In some embodiments, the first pulley and the second pulley are offset from each other in an axial direction of the linear drive mechanism.

In some embodiments, a bracket is connected to the second moving part, the second pulley is connected to the bracket, a guide groove parallel to the axial direction of the second moving part is connected to the bracket, and the power wire is in clearance fit in the guide groove.

In some embodiments, the first moving part is a screw rod in transmission connection with the motor assembly, the second moving part is a first supporting tube sleeved on the screw rod, a first transmission nut is connected to the screw rod in a threaded manner, and the first supporting tube is connected with the first transmission nut and used for limiting the first transmission nut to rotate circumferentially.

In some embodiments, the linear driving mechanism further comprises a wire tube and a second supporting tube, the wire tube is sleeved on the screw rod, the wire tube is limited in the circumferential direction relative to the screw rod and can move axially, and a second transmission nut is connected to the wire tube in a threaded manner; the second support pipe is sleeved in the first support pipe, is limited in the circumferential direction relative to the first support pipe and can move axially, and the second support pipe is connected with the second transmission nut and used for limiting the second transmission nut to rotate in the circumferential direction.

In some embodiments, the telescopic tube assembly further comprises a middle tube, wherein the inner tube, the middle tube and the outer tube are sequentially arranged from inside to outside; the first support tube is connected with a mounting seat capable of synchronously moving along with the first support tube, the middle tube is connected with the mounting seat, and the mounting seat is provided with a through hole for a power line to pass through; and one end, far away from the motor assembly, of the second supporting tube is connected with a bottom plate, and the bottom plate is connected with the outer tube.

In some embodiments, the power socket is connected to the bottom plate, and the outer tube is provided with a avoiding port corresponding to the power socket.

In some embodiments, a bearing assembly is coaxially connected to the end of the first transmission nut away from the motor assembly, and an inner ring of the bearing assembly is connected with the wire tube.

In some embodiments, the motor assembly is provided with a spare socket electrically connected with the motor assembly.

To sum up, compared with the related art, the internal wiring lifting stand column has the following advantages: the inner wiring lifting upright post is provided with a pulley block in the telescopic pipe assembly, a first pulley of the pulley block is connected with the inner pipe, a second pulley is connected with a second moving part of the linear driving mechanism, a first end of a power line is electrically connected with the motor assembly, and a second end of the power line sequentially bypasses the first pulley and the second pulley and is connected with a power socket at one end, far away from the motor assembly, of the telescopic pipe assembly; when the second moving part of the linear driving mechanism is driven by the motor assembly to axially move so that the telescopic pipe assembly is expanded or contracted, the inner pipe is fixedly connected with the motor assembly, so that the distance or position of the first pulley relative to the motor assembly is fixed, the second pulley axially moves synchronously with the second moving part, namely, in the telescopic process of the lifting upright post, the second pulley gradually approaches or gradually moves away from the first pulley along the axial direction of the lifting upright post, so that the power line is always in a tensioned or straightened state, and therefore, the winding and knotting of the power line can be effectively avoided, and the defects of line blocking, power failure, electric leakage and the like can be prevented or reduced.

According to another technical scheme, the electric lifting table comprises a table plate, a base and a lifting upright post, wherein the lifting upright post is used for adjusting the height of the table plate relative to the base and is used for connecting the table plate and the base. The lifting upright post of the electric lifting table adopts an internal wiring mode to store a power line of a motor assembly in the lifting upright post, and a pulley block arranged in the lifting upright post is gradually close to or gradually far away from the second pulley of the pulley block along the axial direction of the lifting upright post relative to the first pulley in the telescopic process of the lifting upright post, so that the power line is always in a tensioned or straightened state, and therefore, the power line can be effectively prevented from winding and knotting, and defects of line blocking, power failure, electric leakage and the like can be prevented or reduced.

Drawings

Fig. 1 is a schematic structural view of an internal wiring lifting column according to some embodiments of the present application.

Fig. 2 is another angular structural schematic diagram of an internal wiring lifting column according to some embodiments of the present application.

Fig. 3 is a schematic cross-sectional structural view of an internal wiring lifting column according to some embodiments of the present application.

Fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Fig. 5 is a schematic structural view of a linear drive mechanism for an internal track lifting column according to some embodiments of the present application.

Fig. 6 is a schematic diagram of an assembly structure of an internal routing lifting column according to some embodiments of the present application.

Fig. 7 is a schematic view of an expanded state structure of an inner track lifting column according to some embodiments of the present application.

Fig. 8 is a schematic cross-sectional view of an expanded state of an internal wiring lifting column according to some embodiments of the present application.

Fig. 9 is a schematic structural view of a linear drive mechanism of an internal track lifting column according to some embodiments of the present application in an expanded state.

Reference numerals illustrate:

1. motor assembly, 100, motor mounting plate, 101, standby socket, 2, extension tube assembly, 200, inner tube, 201, middle tube, 202, outer tube, 203, power socket, 3, linear driving mechanism, 300, screw, 301, first support tube, 302, first drive nut, 303, wire tube, 304, second support tube, 305, second drive nut, 306, bearing assembly, 307, mount, 308, bottom plate, 309, connecting post, 310, through hole, 4, power cord, 5, first pulley, 500, second pulley, 6, bracket, 600, guide slot.

Detailed Description

First, it should be understood by those skilled in the art that these embodiments are merely for explaining the technical principles of the embodiments of the present application, and are not intended to limit the protection scope of the embodiments of the present application. Those skilled in the art can adapt it as desired to suit a particular application.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms in the embodiments of the present application will be understood by those of ordinary skill in the art in a specific context.

In the examples herein, a first feature "on" or "under" a second feature may be either the first and second features in direct contact, or the first and second features in indirect contact via an intermediary, unless expressly stated and defined otherwise. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The invention will be described in further detail with reference to the drawings and the specific examples.

See fig. 1-9; the embodiment of the application discloses an internal wiring lifting stand column, namely a power supply connecting wire of the lifting stand column is arranged inside the lifting stand column, and in the embodiment, the structure of the internal wiring lifting stand column comprises a motor component 1, a telescopic pipe component 2, a linear driving mechanism 3 and a power supply wire 4 electrically connected with a control circuit of the motor component 1; in this embodiment, the motor assembly 1 includes a driving motor and a motor mounting plate 100 connected to the bottom of the driving motor, the motor mounting plate 100 is connected with a housing covering the driving motor, and the motor mounting plate 100 is generally connected with a beam of the electric lifting table through screws.

In other embodiments, the motor assembly 1 may also be mounted inside the extension tube assembly 2 and fixedly attached to the inner bore of the inner tube 200 of the extension tube assembly 2.

The telescopic tube assembly 2 of the present embodiment is a three-section telescopic tube, that is, the inner tube 200, the middle tube 201 and the outer tube 202 are sequentially included from inside to outside, and in other embodiments, the telescopic tube assembly 2 may be a two-section telescopic tube or a four-section telescopic tube; in this embodiment, the inner tube 200, the middle tube 201 and the outer tube 202 are all square tubes, and in other embodiments, may be round tubes, oval tubes or the like.

Referring specifically to fig. 3, 4 and 6, in this embodiment, the inner tube 200 and the outer tube 202 of the telescopic tube assembly 2 are nested with each other and can axially slide and telescope relatively, and the inner tube 200 is fixedly connected with the motor mounting plate 100 of the motor assembly 1; the middle pipe 201 is nested between the inner pipe 200 and the outer pipe 202, and the middle pipe 201 is circumferentially limited and axially slides relative to the inner pipe 200 or the outer pipe 202; in order to smoothly expand or contract the telescopic tube assembly 2, plastic sliding seats are connected to the inner walls of the middle tube 201 and the outer tube 202; a linear driving mechanism 3 is provided inside the inner tube 200, the linear driving mechanism 3 including a first moving member and a second moving member axially movable with respect to the first moving member; the first moving part is in transmission connection with a driving motor of the motor assembly 1, and the second moving part is connected with the telescopic tube assembly 2 and is used for driving the telescopic tube assembly 2 to expand or contract. The internal wiring lifting column of the embodiment further comprises a pulley assembly, wherein the pulley assembly comprises two pulleys: a first pulley 5 and a second pulley 500, the first pulley 5 being connected to the inner tube 200; the second pulley 500 is connected to the second moving part and can axially move synchronously with the second moving part; the power cord 4 is disposed in the inner tube 200, and a first end of the power cord 4 is electrically connected to the motor assembly 1, and a second end of the power cord is electrically connected to the power socket 203 of the end, far away from the motor assembly 1, of the telescopic tube assembly 2 after bypassing the first pulley 5 and the second pulley 500 in sequence.

It should be understood that the number of the pipe elements of the telescopic tube assembly 2 of the lifting column is matched with that of the linear driving mechanism 3, if two telescopic tube assemblies 2 are adopted, the linear driving mechanism 3 only has a first moving part and a second moving part which can axially move relative to the first moving part, namely, the linear driving mechanism 3 only comprises a lead screw 300, a first supporting tube 301 and a first transmission nut 302, the lead screw 300 is the first moving part, and the first supporting tube 301 is the second moving part; the screw rod 300 is in transmission connection with a driving motor of the motor assembly 1, a first transmission nut 302 is in threaded connection with the screw rod 300, a first supporting tube 301 is sleeved on the screw rod 300 and connected with the first transmission nut 302 for limiting the first transmission nut 302 to circumferentially rotate, the first supporting tube 301 can be connected with the outer tube 202 of the telescopic tube assembly 2, and when the driving motor drives the screw rod 300 to rotate, the first supporting tube 301 drives the outer tube 202 to expand or contract relative to the inner tube 200.

As shown in fig. 3, which is a three-joint extension tube assembly 2, the extension tube assembly 2 comprises an inner tube 200, a middle tube 201 and an outer tube 202; the linear drive 3 has, in addition to a first moving part, which is a threaded spindle 300, and a second moving part, which is a first support tube 301, and a third moving part, which is a second support tube 304; that is, the linear driving mechanism 3 further includes a wire tube 303 and a second supporting tube 304, the wire tube 303 is sleeved on the screw 300, the wire tube 303 is limited circumferentially and can move axially relative to the screw 300, and the wire tube 303 is connected with a second transmission nut 305 by screw threads; the second support tube 304 is sleeved in the first support tube 301, and is circumferentially limited and axially movable relative to the first support tube 301, and the second support tube 304 is connected with the second transmission nut 305 and is used for limiting the second transmission nut 305 to circumferentially rotate. In this embodiment, the end of the first support tube 301 away from the motor assembly 1 is connected with a mounting seat 307, the mounting seat 307 is connected with the middle tube 201 of the telescopic tube assembly 2, and the mounting seat 307 moves synchronously with the first support tube 301; a bottom plate 308 is connected to the lower end of the second support tube 304 or to the end of the second support tube 304 remote from the motor assembly 1, which bottom plate 308 is connected to the outer tube 202 of the telescopic tube assembly 2. In this embodiment, the end of the first transmission nut 302 away from the motor assembly 1 is coaxially connected with a bearing assembly 306, and an inner ring of the bearing assembly 306 is connected with a wire tube 303. So arranged, the wire tube 303 can move axially synchronously with the first drive nut 302, and the wire tube 303 can rotate circumferentially along the axis relative to the first drive nut 302; when the driving motor of the motor assembly 1 drives the screw rod 300 to rotate, the screw rod 300 synchronously drives the wire tube 303 to rotate, the first transmission nut 302 drives the first supporting tube 301 and the middle tube 201 of the telescopic tube assembly 2 to axially move relative to the inner tube 200, and simultaneously, the second transmission nut 305 drives the second supporting tube 304 and the outer tube 202 of the telescopic tube assembly 2 to axially move relative to the middle tube 201, so that the inner tube 200, the middle tube 201 and the outer tube 202 of the telescopic tube assembly 2 are expanded or contracted.

In this embodiment, the connection between the bearing assembly 306 and the first transmission nut 302 means that a receiving cavity is disposed at one end of the first transmission nut 302 away from the motor assembly 1, and the bearing assembly 306 is axially limited in the receiving cavity to ensure that the bearing assembly 306 and the first transmission nut 302 move synchronously along the axial direction, and an inner ring of the bearing assembly 306 is sleeved on the outer side of the wire tube 303.

In this embodiment, the wire tube 303 is limited circumferentially relative to the screw 300 and can move axially, that is, a connecting column 309 is connected to the tail end of the screw 300, and a plurality of sliding grooves are formed in the connecting column 309 circumferentially; the inner wall of the screw tube 303 is circumferentially provided with a plurality of axially extending sliding blocks, and the sliding blocks are correspondingly inserted and matched with the sliding grooves, so that the screw tube 303 is circumferentially limited relative to the screw 300 and can axially stretch and retract relative to the screw.

In other embodiments, the linear driving mechanism 3 may be an electric push rod, a linear motor, a gas spring, or the like.

Referring again to fig. 6, in this embodiment, the inner wire lifting column installs a pulley block in the telescopic tube assembly 2, and connects the first pulley 5 of the pulley block with the inner tube 200, the second pulley 500 is connected with the second moving part of the linear driving mechanism 3, and the first end of the power wire 4 is electrically connected with the motor assembly 1, and the second end bypasses the first pulley 5 and the second pulley 500 in sequence and then is connected with the power socket 203 of the end of the telescopic tube assembly 2 far from the motor assembly 1; when the motor assembly 1 drives the second moving part of the linear driving mechanism 3 to axially move so as to expand or contract the telescopic pipe assembly 2, the inner pipe 200 is fixedly connected with the motor assembly 1, so that the distance or position of the first pulley 5 relative to the motor assembly 1 is fixed, the second pulley 500 moves synchronously and axially along with the second moving part, the first pulley 5 is a fixed pulley based on the motor assembly 1, the second pulley 500 corresponds to a movable pulley, the fixed pulley and the movable pulley are matched, and in the process of expanding and contracting the lifting upright post, the second pulley 500 is gradually close to or gradually far away from the first pulley 5 along the axial direction of the lifting upright post, so that the power wire 4 is always in a tensioned or straightened state, the winding and knotting of the power wire 4 can be effectively avoided, and the defects of line blocking, power failure, electric leakage and the like can be prevented or reduced.

The power cord 4 of this embodiment is the soft power cord 4 of taking insulating cortex, sets up the risk that can avoid electric leakage in the lift stand.

Referring again to fig. 6 and 9, when the lifting column stretches and contracts, in order to prevent the lateral position of the power cord 4 from being deviated and ensure that the power cord 4 is not entangled, a bracket 6 is connected to the second moving member and the first support tube 301, a second pulley 500 is connected to the bracket 6, a guide groove 600 parallel to the axial direction of the second moving member is connected to the bracket 6, and the power cord 4 is in clearance fit in the guide groove 600. And the mounting seat 307 is provided with a through hole 310 for the power line 4 to pass through, and the guide groove 600 and the through hole 310 are arranged, so that the power line 4 between the first pulley 5 and the motor assembly 1 and the power line 4 between the second pulley 500 and the power socket 203 can be separated from each other, and the fixing and guiding functions are performed on the power line 4.

In order to further ensure that the power lines 4 are not entangled and the two pulleys of the pulley block are not interfered with each other, the first pulley 5 and the second pulley 500 are arranged in a staggered manner in the axial direction of the linear driving mechanism 3. In this embodiment, the inner tube 200 and the first support tube 301 are square tubes, so a square space is formed between the inner tube 200 and the first support tube 301, and the first pulley 5 and the second pulley 500 are respectively located on two vertical surfaces of the space.

In some embodiments, as shown in fig. 1, an electrical outlet 203 is connected to the bottom plate 308, and an avoidance port corresponding to the electrical outlet 203 is provided on the outer tube 202. The indoor power connection can be plugged with the power socket 203 through the avoidance port, so that the condition that the connecting wire between the indoor power connection and the motor assembly 1 is exposed outside and suspended is avoided, and the safety is good. Furthermore, the lifting upright post can be directly plugged with an indoor power supply wiring through the power socket 203 to take electricity, so that the operation is very convenient. Further, in other embodiments, the motor assembly 1 is provided with a spare socket 101 electrically connected to the motor assembly 1. The backup outlet 101 functions to backup power to the motor assembly 1 in the event of a failure of the power outlet 203.

The application further discloses an electric lifting table, including table, base and connect the table and the base is used for adjusting the lifting column of table for the height of base, and lifting column adopts the lifting column of any embodiment above. The lifting upright post of the electric lifting table adopts an internal wiring mode to store the power line 4 of the motor assembly 1 in the lifting upright post, and the pulley block arranged in the lifting upright post is gradually close to or gradually far away from the first pulley 5 along the axial direction of the lifting upright post in the telescopic process of the lifting upright post, so that the power line 4 is always in a tensioning or straightening state, the power line 4 can be effectively prevented from being wound and knotted, and the defects of line blocking, power failure, electric leakage and the like can be prevented or reduced.

In the description of the embodiments of the present application, it should be noted that, in the description of the present application, terms such as "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or component must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the description of the present application, descriptions of the terms "one embodiment," "some embodiments," "in this embodiment," "specific examples," or "some examples," etc., mean that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily conceivable by those skilled in the art within the technical scope of the present application should be covered in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An interior line lift stand of walking, its characterized in that: it comprises

A motor assembly;

2. The internal routing lifting column of claim 1, wherein: the first pulley and the second pulley are arranged in a dislocation manner in the axial direction of the linear driving mechanism.

3. The internal routing lifting column of claim 1, wherein: the second moving part is connected with a support, the second pulley is connected to the support, a guide groove parallel to the axial direction of the second moving part is connected to the support, and the power wire is in clearance fit in the guide groove.

4. The internal routing lifting column of claim 1, wherein: the first moving part is a screw rod in transmission connection with the motor assembly, the second moving part is a first supporting tube sleeved on the screw rod, a first transmission nut is connected to the screw rod in a threaded mode, and the first supporting tube is connected with the first transmission nut and used for limiting circumferential rotation of the first transmission nut.

5. The internal routing lifting column of claim 4, wherein: the linear driving mechanism further comprises a wire tube and a second supporting tube, the wire tube is sleeved on the screw rod, the wire tube is limited in the circumferential direction relative to the screw rod and can axially move, and the wire tube is connected with a second transmission nut in a threaded manner; the second support pipe is sleeved in the first support pipe, is limited in the circumferential direction relative to the first support pipe and can move axially, and the second support pipe is connected with the second transmission nut and used for limiting the second transmission nut to rotate in the circumferential direction.

6. The internal routing lifting column of claim 5, wherein: the telescopic pipe assembly further comprises a middle pipe, and the inner pipe, the middle pipe and the outer pipe are sequentially arranged from inside to outside; the first support tube is connected with a mounting seat capable of synchronously moving along with the first support tube, the middle tube is connected with the mounting seat, and the mounting seat is provided with a through hole for a power line to pass through; and one end, far away from the motor assembly, of the second supporting tube is connected with a bottom plate, and the bottom plate is connected with the outer tube.

7. The internal routing lifting column of claim 6, wherein: the bottom plate is connected with the power socket, and the outer tube is provided with an avoidance port corresponding to the power socket.

8. The internal routing lifting column of claim 5, wherein: and one end, far away from the motor assembly, of the first transmission nut is coaxially connected with a bearing assembly, and an inner ring of the bearing assembly is connected with the wire tube.

9. The internal routing lifting column of claim 1, wherein: the motor assembly is provided with a standby socket electrically connected with the motor assembly.

10. The utility model provides an electric lifting table, includes table, base and connects the lift stand that table and base are used for adjusting the height of table for the base, its characterized in that: the lifting column is as claimed in any one of the preceding claims 1 to 9.