Electric supporting rod and vehicle

Abstract

The utility model relates to the technical field of vehicle engineering, and provides an electric supporting rod and a vehicle. A tube shell comprises a sliding cavity and a driving cavity in the axial direction of the tube shell; the telescopic pipe is at least partially inserted into the sliding cavity; the driving assembly is installed in the driving cavity and used for driving the telescopic pipe to move relative to the pipe shell in the axial direction. The first sealing piece is clamped between the pipe shell and the telescopic pipe and comprises a first sealing part and a second sealing part, the second sealing part and the first sealing part are alternately distributed in the axial direction of the pipe shell, one of the first sealing part and the second sealing part forms annular sealing with the inner circumferential wall of the pipe shell, and the other one of the first sealing part and the second sealing part forms annular sealing with the outer circumferential wall of the telescopic pipe. The first sealing part is in sealing connection with the adjacent second sealing part, and the first sealing part and the second sealing part can relatively move in the axial direction and / or the radial direction of the tube shell. Dynamic sealing of the electric supporting rod can be achieved, external liquid can be prevented from entering the pipe shell, and lubricating oil in the pipe shell can be limited from flowing out of the pipe shell.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle engineering, in particular to an electric support pole and a vehicle. Background Art

[0002] Typically, a vehicle's rear trunk is located, opened and closed by a tailgate hinged to the vehicle's main body. This tailgate is typically driven and supported by an electric strut, which rotates relative to the vehicle's main body. The electric strut generally consists of a housing, a telescopic tube, and a drive assembly. The telescopic tube is movably inserted into the housing, and the drive assembly is installed within the housing to drive the tube's movement relative to the housing. One end of the housing is connected to the vehicle's main body, while the other end of the telescopic tube is connected to the vehicle door.

[0003] Since the telescopic tube needs to move axially relative to the tube housing, it is difficult to install a seal between the two. As a result, liquids such as rainwater can flow along the outside of the telescopic tube into the tube housing, causing a short circuit after contacting the drive assembly. Moreover, since some transmission mechanisms in the drive assembly require lubrication with lubricating oil to prevent them from getting stuck and causing transmission compensation, in hot weather, the fluidity of the lubricating oil increases at high temperatures, and it is very easy to flow out from the gap between the telescopic tube and the tube housing, causing pollution to the operating environment.

[0004] Therefore, there is an urgent need for an electric support pole and a vehicle to solve the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to provide an electric support rod and a vehicle, which can realize dynamic sealing of the electric support rod, can prevent external liquid from entering the tube shell, and can limit the lubricating oil liquid in the tube shell from flowing out of the tube shell.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] Electric support pole, including:

[0008] A tube shell, wherein the tube shell includes a sliding cavity and a driving cavity along its axial direction;

[0009] a telescopic tube, wherein at least a portion of the telescopic tube is inserted into the sliding cavity;

[0010] A drive assembly, the drive assembly being installed in the drive cavity and configured to drive the telescopic tube to move axially relative to the tube housing;

[0011] A first sealing member is disposed between the tube housing and the telescopic tube. The first sealing member includes a first sealing portion and second sealing portions alternately distributed with the first sealing portions along the axial direction of the tube housing. One of the first and second sealing portions forms an annular seal with the inner circumferential wall of the tube housing, and the contact surface is a circular arc surface. The other forms an annular seal with the outer circumferential wall of the telescopic tube, and the contact surface is a circular arc surface. The first sealing portion is sealingly connected to the adjacent second sealing portion. The first and second sealing portions are capable of relative movement in the axial direction and / or radial direction of the tube housing.

[0012] As a preferred technical solution for the above-mentioned electric support rod, the above-mentioned first sealing member is a flexible member that can undergo elastic deformation.

[0013] As a preferred technical solution of the above-mentioned electric support pole, the above-mentioned telescopic tube is provided with a first installation groove, and the above-mentioned first sealing member is at least partially installed in the above-mentioned first installation groove.

[0014] As a preferred technical solution of the above-mentioned electric support rod, the above-mentioned tube shell is provided with a first installation groove, and the above-mentioned first sealing member is at least partially installed in the above-mentioned first installation groove.

[0015] As an optimal technical solution for the above-mentioned electric support rod, it also includes a first ball socket and a second ball socket. The first ball socket is sealably installed at one end of the above-mentioned driving cavity facing away from the above-mentioned telescopic tube, and the second ball socket is sealably installed at one end of the above-mentioned telescopic tube facing away from the above-mentioned driving cavity.

[0016] As a preferred technical solution of the above-mentioned electric support rod, the above-mentioned first ball socket and / or the above-mentioned tube shell are provided with a second installation groove, and a second sealing member is installed in the above-mentioned second installation groove for sealing the gap between the above-mentioned tube shell and the above-mentioned first ball socket.

[0017] As a preferred technical solution of the above-mentioned electric support rod, it also includes a bundle tube, which is connected to the joint of the above-mentioned first ball socket, and the above-mentioned bundle tube and the above-mentioned joint are sealed by a third sealing member.

[0018] As a preferred technical solution for the above-mentioned electric support rod, the above-mentioned joint is formed with a first abutting surface and a second abutting surface in its axial direction. The above-mentioned third sealing member is embedded in the above-mentioned bundle tube. The above-mentioned third sealing member is partially located between the above-mentioned first abutting surface and the second abutting surface, and abuts against one of the two along the axial direction of the above-mentioned joint.

[0019] As a preferred technical solution of the above-mentioned electric support rod, the end of the above-mentioned bundle tube and the above-mentioned third seal are both elastic parts, and part of the end of the above-mentioned bundle tube and part of the above-mentioned third seal are both sandwiched between the above-mentioned first abutment surface and the above-mentioned second abutment surface.

[0020] A vehicle is also provided, comprising a vehicle body, a tailgate, and the above-mentioned electric strut, wherein the tailgate is hinged to the vehicle body, and the electric strut connects the tailgate and the vehicle body to support the tailgate to rotate relative to the vehicle body.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides an electric support pole and a vehicle, wherein the electric support pole includes a tube shell, a telescopic tube, a drive assembly, and a first sealing member. The tube shell includes a sliding cavity and a drive cavity along its axial direction; the telescopic tube is at least partially inserted into the sliding cavity; the drive assembly is installed in the drive cavity and is used to drive the telescopic tube to move axially relative to the tube shell; a first sealing member is clamped between the tube shell and the telescopic tube, and includes a first sealing portion and a second sealing portion that is alternately distributed with the first sealing portion along the axial direction of the tube shell. One of the first sealing portion and the second sealing portion forms an annular seal with the inner circumferential wall of the tube shell, and the other forms an annular seal with the outer circumferential wall of the telescopic tube. The first sealing portion is sealedly connected to the adjacent second sealing portion, and the first sealing portion and the second sealing portion can move relative to each other along the axial direction and / or radial direction of the tube shell.

[0023] Specifically, the tube shell has through-holes extending through both end surfaces along its axial direction. The tube shell is axially divided into a sliding cavity and a driving cavity, which are interconnected. A telescopic tube is movably mounted within the sliding cavity, at least partially inserted within the tube shell. The telescopic tube can move axially relative to the tube shell, thereby changing the length of the entire electrical support rod. A driving assembly mounted within the driving cavity is used to drive the telescopic tube to move relative to the tube shell. A dynamic seal, namely a first seal, is provided between the telescopic tube and the tube shell. The first seal prevents liquid from entering the tube shell along the telescopic tube and limits the outflow of lubricating oil within the tube shell. Furthermore, to accommodate relative movement between the telescopic tube and the tube shell, the first seal includes a first sealing portion and a second sealing portion. When radial displacement occurs between the telescopic tube and the tube housing, the first and second sealing portions can move closer or further away from each other, providing adjustment space while always maintaining a seal with the tube housing or the telescopic tube. When axial relative movement occurs between the telescopic tube and the tube housing, the arc-shaped contact surface formed by the first seal, the tube housing, and the telescopic tube can reduce friction and lower damping. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1This is a schematic structural diagram of an electric support pole provided by an embodiment of the present utility model;

[0026] Figure 2 This is a front view of an electric support rod provided by an embodiment of the utility model;

[0027] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0028] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0029] Figure 5 yes Figure 3 A partial enlarged view of point C in the middle;

[0030] Figure 6 yes Figure 3 A partial enlarged view of point D in the middle.

[0031] In the picture:

[0032] 100, tube shell; 110, driving cavity;

[0033] 200, telescopic tube;

[0034] 310, first sealing member; 311, first sealing portion; 312, second sealing portion; 320, second sealing member; 330, third sealing member; 340, fourth sealing member;

[0035] 400a, first ball socket; 400b, second ball socket; 410, joint; 500, bundle tube. DETAILED DESCRIPTION

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0037] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0040] like Figures 1 to 6 As shown, the present invention provides an electric support pole, including a tube shell 100, a telescopic tube 200, a driving assembly and a first sealing member 310. In which, the tube shell 100 includes a sliding cavity and a driving cavity 110 along its axial direction; the telescopic tube 200 is at least partially inserted into the sliding cavity; the driving assembly is installed in the driving cavity 110, and is used to drive the telescopic tube 200 to move axially relative to the tube shell 100; the first sealing member 310 is clamped between the tube shell 100 and the telescopic tube 200, and the first sealing member 310 includes a first sealing portion 311, and second sealing portions 312 alternately distributed with the first sealing portions 311 along the axial direction of the tube shell 100. One of the first sealing portion 311 and the second sealing portion 312 forms an annular seal with the inner circumferential wall of the tube shell 100, and the other forms an annular seal with the outer circumferential wall of the telescopic tube 200. The first sealing portion 311 is sealedly connected to the adjacent second sealing portion 312, and the first sealing portion 311 and the second sealing portion 312 can move relative to each other in the axial direction and / or radial direction of the tube shell 100.

[0041] Specifically, the tube shell 100 is provided with through holes passing through both end surfaces along its axial direction, and is divided into a sliding cavity and a driving cavity 110 along the axial direction of the tube shell 100, and the sliding cavity and the driving cavity 110 are connected to each other; a telescopic tube 200 is movably installed in the sliding cavity, and the telescopic tube 200 is at least partially inserted in the tube shell 100. The telescopic tube 200 can move axially relative to the tube shell 100, thereby changing the length of the entire electric support rod; the driving assembly installed in the driving cavity 110 is used to drive the telescopic tube 200 to move relative to the tube shell 100.

[0042] Because the telescopic tube 200 needs to move axially relative to the housing 100, it is difficult to install a seal between the two. As a result, liquids such as rainwater can flow along the outside of the telescopic tube 200 into the housing 100 and contact the drive assembly, causing a short circuit. Furthermore, since some transmission mechanisms within the drive assembly require lubrication to prevent them from getting stuck, resulting in poor transmission efficiency, the lubricating oil becomes more fluid in hot weather and easily flows out from the gap between the telescopic tube 200 and the housing 100, causing environmental pollution.

[0043] To this end, in this embodiment, a dynamic seal, namely a first seal 310, is provided between the telescopic tube 200 and the housing 100. The first seal 310 can prevent liquid outside the housing 100 from entering the housing 100 along the telescopic tube 200 and can also limit the lubricating oil in the housing 100 from flowing out of the housing 100. Furthermore, to accommodate the relative movement between the telescopic tube 200 and the housing 100, the first seal 310 includes a first sealing portion 311 and a second sealing portion 312.

[0044] Assume that there are n first sealing portions 311 and m second sealing portions 312. For example, when n=m=1, the first sealing member 310 is Z-shaped; when n=1 and m=2, or when n=2 and m=1, the first sealing member 310 is V-shaped or arc-shaped; and when both n and m are positive integers greater than 1, the first sealing member 310 is corrugated.

[0045] In this way, when radial displacement occurs between the telescopic tube 200 and the housing 100, the first sealing portion 311 and the second sealing portion 312 can move closer to or further away from each other, providing adjustment space while always maintaining a seal with the housing 100 or the telescopic tube 200. When the telescopic tube 200 and the housing 100 move axially relative to each other, the arc-shaped contact surface formed by the first sealing member 310, the housing 100, and the telescopic tube 200 can reduce friction and lower damping.

[0046] Optionally, the first sealing member 310 is a flexible member capable of elastic deformation.

[0047] Exemplarily, the first sealing member 310 is made of rubber. When radial relative displacement occurs between the telescopic tube 200 and the housing 100, the gap therebetween changes, and the first sealing member 310 deforms accordingly. This ensures that one of the first sealing portion 311 and the second sealing portion 312 is sealed against the outer wall of the telescopic tube 200, while the other is sealed against the inner wall of the housing 100. When the telescopic tube 200 and the housing 100 are reattached, the first sealing member 310 can also recover its deformation.

[0048] Optionally, the telescopic tube 200 is provided with a first installation groove, and the first sealing member 310 is at least partially installed in the first installation groove.

[0049] Exemplarily, the head end of the telescopic tube 200 can enter and exit the tube housing 100 along the axial direction of the tube housing 100, while the tail end of the telescopic tube 200 is always located in the tube housing 100. The first mounting groove is defined in the outer peripheral wall of the tail end of the telescopic tube 200. The first mounting groove is annular and is defined around the axis of the telescopic tube 200. One of the first sealing portion 311 and the second sealing portion 312 of the first sealing member 310 is located in the first mounting groove and abuts against the bottom wall of the first mounting groove to form a seal, while the other is located outside the first mounting groove and abuts against the inner peripheral wall of the tube housing 100 to form a seal. In this way, the two opposite axial sides of the first mounting groove in the tube housing 100 can limit the first sealing member 310, thereby preventing the first sealing member 310 from being displaced and causing sealing failure when the telescopic tube 200 and the tube housing 100 undergo axial relative movement.

[0050] Furthermore, it is assumed that the first sealing member 310 includes n first sealing portions 311 and n+1 second sealing portions 312, where n is a positive integer. The first sealing portions 311 are used to abut and seal against the inner circumferential wall of the tube housing 100, and the second sealing portions 312 are used to abut and seal against the outer circumferential wall of the telescopic tube 200. That is, the first sealing portions 311 serve as the outer ring of the first sealing member 310, and the second sealing portions 312 serve as the inner ring of the second sealing portion 312. The radial cross-section of the first sealing member 310 is approximately triangular, arc-shaped, or trapezoidal. All of the second sealing portions 312 are located within the first mounting groove. Thus, in the axial direction of the tube housing 100, the inner ring width of the first sealing member 310 is greater than the outer ring width. The placement of the inner ring within the first mounting groove enhances the stability of the first sealing member 310.

[0051] Optionally, the tube housing 100 is provided with a first installation groove, and the first sealing member 310 is at least partially installed in the first installation groove.

[0052] Exemplarily, a portion of the sliding cavity is always sleeved outside the telescopic tube 200, and the first mounting groove is opened on the inner side wall of the tube shell 100 in this area. The first mounting groove is annular and opened around the axis of the telescopic tube 200. One of the first sealing portion 311 and the second sealing portion 312 of the first sealing member 310 is located in the first mounting groove and abuts against the bottom wall of the first mounting groove to form a seal, and the other is located outside the first mounting groove and abuts against the inner circumferential wall of the tube shell 100 to form a seal. In this way, the two opposite axial sides of the first mounting groove and the tube shell 100 can limit the first sealing member 310, thereby preventing the first sealing member 310 from being displaced when the telescopic tube 200 and the tube shell 100 undergo axial relative movement, resulting in sealing failure.

[0053] Furthermore, the telescopic tube 200 and / or the tube housing 100 may be provided with a plurality of first mounting grooves, which are spaced apart along the axial direction of the tube housing 100. The first mounting groove provided on the telescopic tube 200 is denoted as a first mounting groove A, and the first mounting groove provided on the tube housing 100 is denoted as a first mounting groove B. When the telescopic tube 200 and the tube housing 100 move relative to each other in the axial direction, the first mounting groove A and the first mounting groove B never overlap.

[0054] Optionally, the electric strut further includes a first socket 400a and a second socket 400b. The first socket 400a is sealedly mounted on the end of the drive cavity 110 facing away from the telescopic tube 200, and the second socket 400b is sealedly mounted on the end of the telescopic tube 200 facing away from the drive cavity 110. The two sockets are used for rotational connection of the electric strut to the vehicle body and the tailgate, respectively.

[0055] Optionally, a second mounting groove is defined in the first ball socket 400a and / or the housing 100. A second sealing member 320 is installed in the second mounting groove to seal the gap between the housing 100 and the first ball socket 400a. After the first ball socket 400a and the housing 100 are assembled, the two generally do not move relative to each other, resulting in a fixed connection. The seal in this case is generally a common static seal. For example, the second mounting groove is defined in the first ball socket 400a. The second mounting groove is an annular groove extending around the axis of the housing 100. The second sealing member 320 is a sealing ring. A portion of the sealing ring is disposed within the second mounting groove, abutting against the sidewall of the second mounting groove, while the other portion is located outside the second mounting groove, abutting against the inner circumference of the housing 100.

[0056] Optionally, a fourth sealing member 340 is provided between the second ball socket 400 b and the telescopic tube 200 .

[0057] Optionally, the electrical support rod further includes a bundle tube 500, which is connected to the joint 410 of the first socket 400a. The bundle tube 500 and the joint 410 are sealed by a third seal 330. For example, when the telescopic tube 200 extends out of the tube shell 100, the vacant space within the tube shell 100 increases, the air pressure decreases, and some gas needs to be inhaled. When the telescopic tube 200 retracts into the tube shell 100, the vacant space within the tube shell 100 decreases, the air pressure increases, and some gas needs to be discharged. The airflow used to balance the air pressure within the tube shell 100 passes through the bundle tube 500 into the first socket 400a and then into the tube shell 100.

[0058] Some wiring harnesses of the drive components, such as power lines, data signal lines, etc., also need to be connected to the vehicle body through the harness tube 500.

[0059] Optionally, the joint 410 is formed with a first abutting surface and a second abutting surface facing each other in its axial direction. The third sealing member 330 is embedded in the bundle tube 500, with the third sealing member 330 partially located between the first abutting surface and abutting at least one of the first abutting surface and at least one of the first abutting surface along the axial direction of the joint 410. As the telescopic tube 200 retracts into the tubular housing 100, it forces excess gas from the tubular housing 100 out of the tubular housing 100, and the excess gas is expelled from the bundle tube 500. When the gas acts on the bundle tube 500, the bundle tube 500 tends to move away from the first ball socket 400a. This can easily loosen the connection between the bundle tube 500 and the first ball socket 400a, creating a gap. This can easily allow air to enter the tubular housing 100, causing a short circuit in the drive assembly. To this end, in this embodiment, a first abutting surface and a second abutting surface are provided at the joint 410 of the first ball socket 400a, and a receiving groove is formed between the first abutting surface and the second abutting surface. The third sealing member 330 is embedded in the bundle tube 500 to maintain relative fixation and sealing with the bundle tube 500. The third sealing member 330 partially extends into the receiving groove and abuts against at least one of the first abutting surface and the second abutting surface to perform sealing.

[0060] Optionally, the end of the bundle tube 500 and the third sealing member 330 are both elastic members, and a portion of the end of the bundle tube 500 and a portion of the third sealing member 330 are both sandwiched between the first abutting surface and the second abutting surface.

[0061] For example, the portion where the end of the bundle tube 500 is inserted into the receiving groove is recorded as the first plug-in portion, and the portion where the third seal 330 is inserted into the receiving groove is recorded as the second plug-in portion. The first plug-in portion and the second plug-in portion are arranged in sequence along the axial direction of the housing. In the axial direction of the joint 410, the distance between the first abutting surface and the second abutting surface is D1, and the thickness of the first plug-in portion is D. 2min to D 2max , the thickness of the second plug-in part is D 3min to D 3max , D2min+D 3min ≤D1≤D 2max +D 3max In this way, after the first plug-in portion and the second plug-in portion are inserted into the accommodating groove at the same time, the first plug-in portion and the second plug-in portion are elastically deformed and squeezed against each other to form a seal with the first ball socket 400a.

[0062] Furthermore, a first inclined surface is formed on the side of the first plug-in portion facing the second plug-in portion, and a second inclined surface is formed on the side of the second plug-in portion facing the first plug-in portion. The first inclined surface and the second inclined surface are in contact with each other and can slide relative to each other. When the first plug-in portion and the second plug-in portion are squeezed against each other, the first inclined surface and the second inclined surface can convert part of the axial force along the joint 410 into a radial force of the joint 410, so that the third sealing member 330 is further approached to the bundle tube 500.

[0063] A vehicle is also provided, comprising a vehicle body, a tailgate and the above-mentioned electric strut, wherein the tailgate is hinged to the vehicle body, and the electric strut connects the tailgate and the vehicle body to support the tailgate to rotate relative to the vehicle body.

[0064] Furthermore, the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. Electric support pole, characterized in that, include: A tube shell (100), wherein the tube shell (100) includes a sliding cavity and a driving cavity (110) along its axial direction; a telescopic tube (200), wherein at least a portion of the telescopic tube (200) is inserted into the sliding cavity; a driving assembly, the driving assembly being installed in the driving cavity (110) and being used to drive the telescopic tube (200) to move axially relative to the tube housing (100); A first sealing member (310) is provided between the tube shell (100) and the telescopic tube (200). The first sealing member (310) includes a first sealing portion (311) and second sealing portions (312) arranged alternately with the first sealing portion (311) along the axial direction of the tube shell (100). One of the first sealing portion (311) and the second sealing portion (312) forms an annular seal with the inner circumferential wall of the tube shell (100), and the contact surface is a circular arc surface. The other forms an annular seal with the outer circumferential wall of the telescopic tube (200), and the contact surface is a circular arc surface. The first sealing portion (311) is sealedly connected to the adjacent second sealing portion (312). The first sealing portion (311) and the second sealing portion (312) are capable of relative movement along the axial direction and / or radial direction of the tube shell (100).

2. The electric support pole according to claim 1, characterized in that: The first sealing member (310) is a flexible member capable of elastic deformation.

3. The electric support pole according to claim 1, characterized in that: The telescopic tube (200) is provided with a first installation groove, and the first sealing member (310) is at least partially installed in the first installation groove.

4. The electric support pole according to claim 1, characterized in that: The tube shell (100) is provided with a first installation groove, and the first sealing member (310) is at least partially installed in the first installation groove.

5. The electric support pole according to claim 1, characterized in that: The invention also includes a first ball socket (400a) and a second ball socket (400b), wherein the first ball socket (400a) is sealed and installed at one end of the drive cavity (110) facing away from the telescopic tube (200), and the second ball socket (400b) is sealed and installed at one end of the telescopic tube (200) facing away from the drive cavity (110).

6. The electric support pole according to claim 5, characterized in that: The first ball socket (400a) and / or the tube housing (100) are provided with a second installation groove, and a second sealing member (320) is installed in the second installation groove for sealing the gap between the tube housing (100) and the first ball socket (400a).

7. The electric support pole according to claim 5, characterized in that: It also includes a bundle tube (500), the bundle tube (500) is connected to the joint (410) of the first ball socket (400a), and the bundle tube (500) and the joint (410) are sealed by a third sealing member (330).

8. The electric support pole according to claim 7, characterized in that: The joint (410) is formed with a first abutting surface and a second abutting surface in an axial direction thereof. The third sealing member (330) is embedded in the bundle tube (500). The third sealing member (330) is partially located between the first abutting surface and the second abutting surface, and abuts against one of the first abutting surface and the second abutting surface along the axial direction of the joint (410).

9. The electric support pole according to claim 8, characterized in that: The end of the bundle tube (500) and the third sealing member (330) are both elastic members, and part of the end of the bundle tube (500) and part of the third sealing member (330) are both sandwiched between the first abutting surface and the second abutting surface.

10. A vehicle, characterized in that It comprises a vehicle body, a tailgate and an electric support rod according to any one of claims 1 to 9, wherein the tailgate is hinged to the vehicle body, and the electric support rod connects the tailgate and the vehicle body to support the tailgate to rotate relative to the vehicle body.

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