Waterproof plug assembly, electric supporting rod and vehicle

Abstract

The utility model discloses a waterproof plug assembly, an electric supporting rod and a vehicle. The waterproof plug assembly comprises a plug and a lead sleeve, the whole plug is oblate and is provided with a through hole, the plug comprises a first plugging part and a second plugging part which are connected, the through hole penetrates through the first plugging part and the second plugging part, the first plugging part can be clamped at one end of a wire outlet of an electric supporting rod through elastic deformation, and the second plugging part can be clamped at the other end of the wire outlet of the electric supporting rod through elastic deformation. The lead sleeve comprises a sealing connecting part and a lead part which are connected, the whole sealing connecting part is oblate, the second inserting part is inserted and clamped in the sealing connecting part, a plurality of sealing rings are arranged on the outer wall of the sealing connecting part, and when the first inserting part is clamped at one end of a wire outlet of the electric supporting rod, the sealing connecting part is inserted in the wire outlet. The sealing ring abuts against the inner wall of the wire outlet through elastic deformation, and a wire harness led out from the wire outlet can penetrate through the plug and the lead sleeve. In this way, the waterproof plug assembly can be conveniently inserted into the wire outlet of the electric supporting rod, the sealing performance is high, and the pulling-out force is large.

Description

Technical Field

[0001] The present application relates to the field of automotive parts, and particularly to a waterproof plug assembly, an electric strut, and a vehicle. Background Art

[0002] With the development of the intelligence and comfort of the opening and closing of the automobile tailgate, electric struts have been widely used in automobile tailgates due to their advantages of compact structure and stable performance. An electric strut generally includes a strut body and an outlet structure inserted at one end of the strut body. The outlet structure is used to lead out the power line and control line of the motor in the strut body to access the vehicle system. The existing outlet structures of electric struts are difficult to achieve convenient plugging, strong sealing performance, and large pulling force at the same time. Summary of the Utility Model

[0003] A waterproof plug assembly, an electric strut, and a vehicle provided by the present application can solve the problem that the existing outlet structure of the electric strut is difficult to achieve convenient plugging, strong sealing performance, and large pulling force at the same time.

[0004] To solve the above technical problems, a technical solution adopted by the present application is: to provide a waterproof plug assembly applied to an electric strut, including: a plug, which is generally flat-round in shape and has a through-hole. The plug includes a first plugging portion and a second plugging portion connected to each other. The through-hole penetrates through the first plugging portion and the second plugging portion. The first plugging portion can be elastically deformed to be clamped at one end of the outlet of the electric strut; a lead sleeve, including a sealed connection portion and a lead portion connected to each other. The sealed connection portion is generally flat-round in shape. The second plugging portion is inserted and clamped inside the sealed connection portion. A plurality of sealing rings are provided on the outer wall of the sealed connection portion. When the first plugging portion is clamped at one end of the outlet of the electric strut, the sealed connection portion is inserted into the outlet, and the sealing rings are elastically deformed to abut against the inner wall of the outlet; wherein, the wire harness led out from the outlet of the electric strut can pass through the plug and the lead sleeve.

[0005] In one embodiment, the second plugging portion includes a first main body portion, a first fitting portion, and a limiting outer edge connected between the first main body portion and the first fitting portion. The sealed connection portion includes a sealed portion and a second fitting portion connected to each other. A limiting inner edge is provided between the inside of the sealed portion and the inside of the second fitting portion. When the second plugging portion is inserted into the sealed connection portion, the sealed portion is elastically deformed, so that the first fitting portion and the second fitting portion are fitted together, and the limiting outer edge and the limiting inner edge are in limiting cooperation, and the first main body portion is located inside the sealed portion.

[0006] In one embodiment, the first fitting portion is generally in the shape of a flat frustum of a cone. The first fitting portion includes a first tapered wall in a first direction and a second tapered wall in a second direction. The second fitting portion includes a gradually contracting wall in the first direction and a gradually expanding wall in the second direction. When the first fitting portion is fitted with the second fitting portion, the first tapered wall abuts against the gradually contracting wall, and the gap between the second tapered wall and the gradually expanding wall gradually increases along the direction in which the lead sleeve extends; wherein the first direction is perpendicular to the second direction.

[0007] In one embodiment, a finger-shaped pressing position is provided on the second tapered wall.

[0008] In one embodiment, the first plugging portion includes a connected second main body portion and a limiting portion. The limiting portion is connected to the second plugging portion on a side facing away from the second main body portion. At least part of the structure of the second main body portion can be elastically deformed and clamped at one end of the wire outlet of the electric strut, and the limiting portion can limit the length of the second plugging portion inserted into the sealed connection portion and the length of the second main body portion inserted into one end of the wire outlet.

[0009] In one embodiment, a wedge-shaped block is provided on the side wall of the second main body portion in the second direction. At least part of the structure of the wedge-shaped block protrudes relative to the outer surface of the side wall. There is a first hollow structure between the wedge-shaped block and the side wall in the first direction, and a second hollow structure between the wedge-shaped block and the side wall or the limiting portion in a third direction. The wedge-shaped block can be elastically deformed and clamped at one end of the wire outlet of the electric strut; wherein the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In one embodiment, the end face of the wedge-shaped block facing the limiting portion is a flat surface. When the wedge-shaped block is clamped at one end of the wire outlet of the electric strut, the end face of the wedge-shaped block facing the limiting portion is attached to the inner ring edge at one end of the wire outlet.

[0011] In one embodiment, a limiting step is provided at one end of the wedge-shaped block facing the limiting portion. When the wedge-shaped block is clamped at one end of the wire outlet of the electric strut, the first surface of the limiting step is attached to the bottom surface of the inner ring edge at one end of the wire outlet, and the second surface of the limiting step is attached to the inner wall of the inner ring edge at one end of the wire outlet; wherein the first surface is perpendicular to the second surface.

[0012] In one embodiment, the lead portion is a corrugated pipe.

[0013] Another technical solution adopted by this application is: to provide an electric strut, the electric strut comprising: an outer tube; a motor disposed in the outer tube; a ball socket connection end member fixed to one end of the outer tube, the ball socket connection end member including an outer tube connection portion, a ball socket portion, and a transition portion connected between the outer tube connection portion and the ball socket portion, the outer tube connection portion being inserted into one end of the outer tube and laser welded to the outer tube, the transition portion being provided with an outlet opening facing away from the notch of the ball socket portion; a waterproof plug assembly inserted into the outlet opening and clamped at one end of the outlet opening, and a lead wire of the motor being able to pass through the outlet opening and penetrate through the waterproof plug assembly; wherein, the waterproof plug assembly is the waterproof plug assembly described in any one of the above.

[0014] In one embodiment, the outlet opening is generally oval in shape, and the central axis of the outlet opening intersects the central axis of the outer tube.

[0015] In one embodiment, the plug of the waterproof plug assembly straddles the other end of the outlet opening, and the distance between the plug and the central axis of the outer tube is less than or equal to half of the outer diameter of the outer tube.

[0016] Another technical solution adopted by this application is: to provide a vehicle including the electric strut described in any one of the above.

[0017] The beneficial effect of this application is: Different from the prior art, the waterproof plug assembly provided by this application is applied to an electric strut, and includes: a plug, which is generally oval in shape and has a through hole, the plug including a first plugging portion and a second plugging portion connected together, the through hole penetrating through the first plugging portion and the second plugging portion, the first plugging portion being able to be clamped at one end of the outlet opening of the electric strut through elastic deformation; a lead wire sleeve including a sealed connection portion and a lead wire portion connected together, the sealed connection portion being generally oval in shape, the second plugging portion being inserted into and clamped within the sealed connection portion, and a plurality of sealing rings being provided on the outer wall of the sealed connection portion. When the first plugging portion is clamped at one end of the outlet opening of the electric strut, the sealed connection portion is inserted into the outlet opening, and the sealing rings are elastically deformed to abut against the inner wall of the outlet opening; wherein, the wire harness led out from the outlet opening of the electric strut can penetrate through the plug and the lead wire sleeve. In this way, the waterproof plug assembly can be conveniently plugged into the outlet opening of the electric strut, and has strong sealing performance and large pull-off force, thereby effectively ensuring the waterproof performance of the electric strut. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0019] Figure 1 It is a schematic structural diagram of a vehicle provided by some embodiments of the present application;

[0020] Figure 2 It is a schematic structural diagram of an electric strut provided by some embodiments of the present application;

[0021] Figure 3 is Figure 2 The cross-sectional view of the electric strut at A-A;

[0022] Figure 4 is Figure 3 The partial enlarged view of the electric strut at area M;

[0023] Figure 5 It is an exploded schematic diagram of an electric strut provided by some embodiments of the present application;

[0024] Figure 6 It is a schematic structural diagram of a waterproof plug assembly from the first perspective provided by some embodiments of the present application;

[0025] Figure 7 is Figure 6 The cross-sectional view of the waterproof plug assembly at B-B;

[0026] Figure 8 is Figure 7 The partial enlarged view of the waterproof plug assembly at area N;

[0027] Figure 9 It is a schematic structural diagram of a waterproof plug assembly from the second perspective provided by some embodiments of the present application;

[0028] Figure 10 is Figure 9 The cross-sectional view of the waterproof plug assembly at C-C;

[0029] Figure 11 It is a schematic structural diagram of a plug from the second perspective provided by some embodiments of the present application;

[0030] Figure 12 It is a schematic structural diagram of a lead sleeve provided by some embodiments of the present application.

[0031] Description of Reference Numerals: 2000 - vehicle, 1000 - electric strut, 100 - outer tube, 200 - motor, 300 - ball socket connecting end piece, 310 - outer tube connecting part, 320 - ball socket part, 321 - notch, 330 - transition part, 331 - wire outlet, 3311 - annular inner edge, 400 - waterproof plug assembly, 410 - plug, 411 - through hole, 412 - first insertion part, 4121 - second main body part, 4121a - wedge block, 4121b - first hollow structure, 4121c - second hollow structure, 4121d - limiting step, P1 - first surface, P2 - second surface, 4122 - limiting part, 413 - second insertion part, 4131 - first main body part, 4132 - first fitting part, 4132a - first tapered wall, F - finger pressing position, 4132b - second tapered wall, 4133 - limiting outer edge, 420 - lead sleeve, 421 - sealed connecting part, 4211 - sealing ring, 4212 - sealing part, 4213 - second fitting part, 4213a - gradually shrinking wall, 4213b - gradually expanding wall, 4214 - limiting inner edge, 422 - lead part. Detailed Embodiment

[0032] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. It can be understood that the specific embodiments described herein are only used to explain the present application, rather than limiting the present application. Additionally, it should be noted that for the convenience of description, only the parts related to the present application rather than all the structures are shown in the drawings. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0033] The terms "first", "second", and "third" in the present application are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products, or devices.

[0034] References herein to "embodiments" mean that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0035] The waterproof plug assembly provided by the present application is applied to an electric strut and includes: a plug, which is generally oblate in shape and has a through hole. The plug includes a first plugging portion and a second plugging portion connected to each other. The through hole penetrates through the first plugging portion and the second plugging portion. The first plugging portion can be elastically deformed to be clamped at one end of the wire outlet of the electric strut; a lead sleeve, which includes a sealed connection portion and a lead portion connected to each other. The sealed connection portion is generally oblate in shape. The second plugging portion is inserted and clamped in the sealed connection portion. A plurality of sealing rings are provided on the outer wall of the sealed connection portion. When the first plugging portion is clamped at one end of the wire outlet of the electric strut, the sealed connection portion is inserted into the wire outlet, and the sealing rings are elastically deformed to abut against the inner wall of the wire outlet; wherein, the wire harness led out from the wire outlet of the electric strut can pass through the plug and the lead sleeve. In this way, the waterproof plug assembly can be conveniently plugged into the wire outlet of the electric strut, and has strong sealing performance and large pull-off force, thereby effectively ensuring the waterproof performance of the electric strut.

[0036] Please refer to Figure 1 , Figure 1 FIG. is a schematic structural diagram of a vehicle provided by some embodiments of the present application. The vehicle 2000 provided by the present application is configured with an electric tailgate to make the opening and closing of the vehicle tailgate more convenient and intelligent, thereby facilitating the user to pick up and place items in the trunk and improving the user experience. The vehicle 2000 may include, but is not limited to, an electric strut 1000. One end of the electric strut 1000 is ball-jointed to the body of the vehicle 2000, and the other end of the electric strut 1000 is ball-jointed to the tailgate of the vehicle 2000. The user can control the opening, closing, and hovering of the tailgate relative to the body through an in-vehicle button and / or a remote control key. The electric strut 1000 in the vehicle 2000 has excellent waterproof performance, enabling the vehicle 2000 to adapt to various harsh working conditions and being able to normally open and / or close the tailgate even in a stormy environment.

[0037] Please refer to Figures 2 - 5 , Figure 2 FIG. is a schematic structural diagram of an electric strut provided by some embodiments of the present application, Figure 3 is Figure 2 a cross-sectional view of the electric strut at A-A, Figure 4 isFigure 3 Partial enlarged view of the electric strut at area M Figure 5 is an exploded schematic view of the electric strut provided by some embodiments of the present application. The electric strut 1000 provided by the present application has excellent waterproof performance, enabling the vehicle 2000 to adapt to various harsh working conditions and can normally open and / or close the tailgate even in a stormy environment. The electric strut 1000 may include, but is not limited to, an outer tube 100, a motor 200, a ball socket connection end member 300, and a waterproof plug assembly 400. The motor 200 is disposed in the outer tube 100 and serves as the power source of the electric strut 1000. Among them, the ball socket connection end member 300 may include, but is not limited to, an outer tube connection portion 310, a ball socket portion 320, and a transition portion 330. The transition portion 330 is connected between the outer tube connection portion 310 and the ball socket portion 320. The outer tube connection portion 310 is inserted into one end of the outer tube 100 and is laser welded to the outer tube 100 to enhance the sealing performance of the electric strut 1000 and prevent external liquid from entering the outer tube 100 and affecting the normal operation and life of the motor 200. The transition portion 330 is provided with an outlet 331 through which the lead of the motor 200 can be led out. The outlet 331 faces away from the notch 321 of the ball socket portion 320, so that the ball hinge of the ball socket portion 320 and the outlet of the outlet 331 do not interfere with each other.

[0038] Further, the waterproof plug assembly 400 is inserted into the outlet 331 to seal the outlet 331 and prevent external liquid from entering the outer tube 100 through the outlet 331. Moreover, the waterproof plug assembly 400 is clamped at one end of the outlet 331 to prevent it from detaching from the outlet 331 under the action of external force and resulting in the loss of the sealing and waterproof performance. Among them, the lead of the motor 200 can pass through the outlet 331 and pass through the waterproof plug assembly 400 to be further led out to the external space and thus electrically connected to the controller on the vehicle 2000.

[0039] Further, the overall shape of the outlet 331 is oblate to adapt to the waterproof plug assembly 400, so that the waterproof plug assembly 400 can closely fit the outlet 331, thereby ensuring the sealing and waterproof effect. The central axis of the outlet 331 intersects with the central axis of the outer tube 100, providing a larger operating space for inserting the waterproof plug assembly 400 into the outlet 331, which is beneficial to the installation of the waterproof plug assembly 400.

[0040] Further, the plug 410 of the waterproof plug assembly 400 straddles the other end of the outlet 331. At the same time, the distance between the plug 410 and the central axis of the outer tube 100 is less than or equal to half of the outer diameter of the outer tube 100, so as to avoid occupying too much space and facilitate the arrangement of the electric strut 1000 on the vehicle 2000.

[0041] Please refer to Figures 3 - 12 , Figure 6It is a schematic structural view of a waterproof plug assembly provided by some embodiments of the present application from a first perspective. Figure 7 It is Figure 6 a cross-sectional view of the waterproof plug assembly at B-B. Figure 8 It is Figure 7 a partial enlarged view of the waterproof plug assembly at area N. Figure 9 It is a schematic structural view of the waterproof plug assembly provided by some embodiments of the present application from a second perspective. Figure 10 It is Figure 9 a cross-sectional view of the waterproof plug assembly at C-C. Figure 11 It is a schematic structural view of the plug provided by some embodiments of the present application from a second perspective. Figure 12 It is a schematic structural view of the lead sleeve provided by some embodiments of the present application. The waterproof plug assembly 400 provided by the present application can be conveniently plugged into the outlet 331 of the electric strut 1000, and has strong sealing performance and large pull-off force, thereby effectively ensuring the waterproof performance of the electric strut 1000. The waterproof plug assembly 400 may include, but is not limited to, a plug 410 and a lead sleeve 420. The plug 410 is snap-connected to the lead sleeve 420. The plug 410 includes a connected first plugging portion 412 and a second plugging portion 413. The lead sleeve 420 includes a connected sealing connection portion 421 and a lead portion 422. The first plugging portion 412 can be elastically deformed and snapped onto one end of the outlet 331 of the electric strut 1000 to ensure the pull-off force between the plug 410 and the outlet 331. The second plugging portion 413 is inserted and snapped into the sealing connection portion 421 to ensure the pull-off force between the plug 410 and the lead sleeve 420.

[0042] Further, a plurality of sealing rings 4211 are provided on the outer wall of the sealing connection portion 421. When the first plugging portion 412 is snapped onto one end of the outlet 331 of the electric strut 1000, the sealing connection portion 421 is inserted into the outlet 331, and the sealing rings 4211 are elastically deformed and abutted against the inner wall of the outlet 331 to achieve the waterproof seal between the waterproof plug assembly 400 and the outlet 331, and at the same time increase the pull-off force between the plug 410 and the outlet 331, thereby effectively ensuring the waterproof performance of the electric strut.

[0043] Further, the plug 410 is integrally oblate. The sealing connection portion 421 is also integrally oblate to be fitted and installed with the oblate plug 410. Among them, the oblate design of the sealing connection portion 421 meets the requirements of ergonomics, so that the waterproof plug assembly 400 can be more easily snapped onto the outlet 331 of the electric strut 1000, thereby improving the plugging convenience of the waterproof plug assembly 400.

[0044] Further, the plug 410 has a through hole 411. The through hole 411 penetrates through the first plugging portion 412 and the second plugging portion 413. The wire harness led out from the wire outlet 331 of the electric strut 1000 can pass through the through hole 411, thereby passing through the plug 410 and the lead sleeve 420, and then leading out to the external space to be electrically connected to the controller on the vehicle 2000.

[0045] Optionally, the lead portion 422 can be a corrugated pipe to better protect the wire harness led out from the wire outlet 331 of the electric strut 1000.

[0046] Further, the second plugging portion 413 may include, but is not limited to, a first main body portion 4131, a first fitting portion 4132, and a limiting outer edge 4133. The limiting outer edge 4133 is located between the first main body portion 4131 and the first fitting portion 4132 and is connected to the first main body portion 4131 and the first fitting portion 4132. The sealing connection portion 421 may include, but is not limited to, a sealing portion 4212, a second fitting portion 4213, and a limiting inner edge 4214. The sealing portion 4212 is connected to the second fitting portion 4213. The limiting inner edge 4214 is disposed between the inside of the sealing portion 4212 and the inside of the second fitting portion 4213. When the second plugging portion 413 is inserted into the sealing connection portion 421, the sealing portion 4212 undergoes elastic deformation, such that the first fitting portion 4132 is fitted with the second fitting portion 4213, the limiting outer edge 4133 is in limiting cooperation with the limiting inner edge 4214, and the first main body portion 4131 is located inside the sealing portion 4212.

[0047] Further, the first fitting portion 4132 is integrally in the shape of a flat frustum of a cone. The first fitting portion 4132 includes a first conical wall 4132a along a first direction and a second conical wall 4132b along a second direction. The second fitting portion 4213 includes a gradually shrinking wall 4213a along the first direction and a gradually expanding wall 4213b along the second direction. When the first fitting portion 4132 is fitted with the second fitting portion 4213, the first conical wall 4132a abuts against the gradually shrinking wall 4213a to prevent looseness between the plug 410 and the lead sleeve 420. When the first fitting portion 4132 is fitted with the second fitting portion 4213, the gap between the second conical wall 4132b and the gradually expanding wall 4213b gradually increases along the extending direction of the lead sleeve 420 to form an elastic reset gap, such that when an extrusion force acts on the gradually expanding wall 4213b, the gap between the gradually expanding wall 4213b and the second conical wall 4132b is eliminated or reduced, and when the extrusion force is withdrawn, the original gap between the gradually expanding wall 4213b and the second conical wall 4132b is restored, thereby enabling the waterproof plug assembly 400 to maintain the sealing property between the waterproof plug assembly 400 and the wire outlet 331 after being inserted and clamped at the wire outlet 331. Wherein, the first direction is perpendicular to the second direction.

[0048] Optionally, a finger-pressing position F is provided on the second conical wall 4132b to meet the requirements of ergonomics, so that when an extrusion force is applied at the fitting portion between the first fitting portion 4132 and the second fitting portion 4213, the waterproof plug assembly 400 can be comfortably and conveniently clamped at one end of the wire outlet 331 of the electric strut 1000.

[0049] Furthermore, the first plugging portion 412 includes a connected second main body portion 4121 and a limiting portion 4122. One side of the limiting portion 4122 facing away from the second main body portion 4121 is connected to the second plugging portion 413. At least part of the structure of the second main body portion 4121 can be elastically deformed and clamped at one end of the wire outlet 331 of the electric strut 1000. The limiting portion 4122 can limit the length of the second plugging portion 413 inserted into the sealed connection portion 421 and the second main body portion 4121 inserted into one end of the wire outlet 331.

[0050] Specifically, a wedge-shaped block 4121a is provided on the side wall of the second main body portion 4121 along the second direction. At least part of the structure of the wedge-shaped block 4121a protrudes from the outer surface of the side wall, so that the wedge-shaped block 4121a can be elastically deformed and clamped at one end of the wire outlet 331 of the electric strut 1000. A first hollow structure 4121b is provided between the wedge-shaped block 4121a and the side wall along the first direction, and a second hollow structure 4121c is provided between the wedge-shaped block 4121a and the side wall or the limiting portion 4122 along the third direction, so that the wedge-shaped block 4121a has better elastic deformation properties. Among them, the first direction, the second direction and the third direction are perpendicular to each other.

[0051] In some embodiments, the end face of the wedge-shaped block 4121a facing the limiting portion 4122 is a plane. When the wedge-shaped block 4121a is clamped at one end of the wire outlet 331 of the electric strut 1000, the end face of the wedge-shaped block 4121a facing the limiting portion 4122 is attached to the annular inner edge 3311 at one end of the wire outlet 331, so that when the waterproof plug assembly 400 is subjected to a pulling force, the wedge-shaped block 4121a has a tendency to move away from the second main body portion 4121, thereby improving the pull-off force of the waterproof plug assembly 400.

[0052] In this embodiment, a limiting step 4121d is provided at one end of the wedge block 4121a facing the limiting portion 4122. When the wedge block 4121a is clamped at one end of the wire outlet 331 of the electric strut 1000, the first surface P1 of the limiting step 4121d is attached to the bottom surface of the annular inner edge 3311 at one end of the wire outlet 331, so that when the waterproof plug assembly 400 is subjected to a tensile force, the wedge block 4121a has a tendency to move away from the second main body portion 4121, thereby improving the pulling-off force of the waterproof plug assembly 400; the second surface P2 of the limiting step 4121d is attached to the inner wall of the annular inner edge 3311 at one end of the wire outlet 331 to limit the tendency of the wedge block 4121a to move away from the second main body portion 4121, thereby avoiding damage to the wedge block 4121a and strengthening the sealing effect at the same time. The first surface P1 is perpendicular to the second surface P2.

[0053] The waterproof plug assembly 400 provided in this application is applied to the electric strut 1000 and includes: a plug 410, which is generally oblate and has a through hole 411. The plug 410 includes a connected first plugging portion 412 and a second plugging portion 413. The through hole 411 penetrates through the first plugging portion 412 and the second plugging portion 413. The first plugging portion 412 can be elastically deformed and clamped at one end of the wire outlet 331 of the electric strut 1000; a lead sleeve 420, which includes a connected sealing connection portion 421 and a lead portion 422. The sealing connection portion 421 is generally oblate. The second plugging portion 413 is inserted and clamped in the sealing connection portion 421. A plurality of sealing rings 4211 are provided on the outer wall of the sealing connection portion 421. When the first plugging portion 412 is clamped at one end of the wire outlet 331 of the electric strut 1000, the sealing connection portion 421 is inserted into the wire outlet 331, and the sealing rings 4211 are elastically deformed and abutted against the inner wall of the wire outlet 331; wherein, the wire harness led out from the wire outlet 331 of the electric strut 1000 can pass through the plug 410 and the lead sleeve 420. In this way, the waterproof plug assembly 400 can be conveniently plugged into the wire outlet 331 of the electric strut 1000, and has strong sealing performance and large pulling-off force, thereby effectively ensuring the waterproof performance of the electric strut 1000.

[0054] The above are only some embodiments of this application, and thus do not limit the protection scope of this application. Any equivalent device or equivalent process transformation made by using the content of the specification and drawings of this application, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of this application.

Claims

1. A waterproof plug assembly, applied to an electric support pole, characterized in that: include: The plug is in an oblate shape as a whole and has a through hole. The plug includes a first plug-in portion and a second plug-in portion connected to each other. The through hole penetrates the first plug-in portion and the second plug-in portion. The first plug-in portion can be clamped at one end of the outlet of the electric support rod by elastic deformation. The lead sleeve comprises a connected sealing connection part and a lead part, wherein the sealing connection part is in an oblate shape as a whole, the second plug-in part is inserted and clamped in the sealing connection part, and the outer wall of the sealing connection part is provided with a plurality of sealing rings, when the first plug-in part is clamped at one end of the outlet of the electric support rod, the sealing connection part is inserted in the outlet, and the sealing ring abuts against the inner wall of the outlet through elastic deformation; Among them, the wiring harness led out from the wire outlet of the electric support rod can be passed through the plug and the lead sleeve.

2. The waterproof plug assembly according to claim 1, characterized in that: The second plug-in portion includes a first main body portion, a first engaging portion and a limiting outer edge connected between the first main body portion and the first engaging portion, the sealing connection portion includes a sealing portion and a second engaging portion that are connected, a limiting inner edge is provided between the interior of the sealing portion and the interior of the second engaging portion, when the second plug-in portion is inserted into the sealing connection portion, the sealing portion undergoes elastic deformation so that the first engaging portion and the second engaging portion engage, the limiting outer edge and the limiting inner edge are limitedly matched, and the first main body portion is located inside the sealing portion.

3. The waterproof plug assembly according to claim 2, characterized in that: The first engaging portion is in the shape of an oblate truncated cone as a whole, the first engaging portion includes a first conical wall along a first direction and a second conical wall along a second direction, the second engaging portion includes a gradually contracting wall along the first direction and a gradually expanding wall along the second direction, when the first engaging portion is engaged with the second engaging portion, the first conical wall abuts against the gradually contracting wall, and the gap between the second conical wall and the gradually expanding wall gradually increases along the direction in which the lead sleeve extends; wherein the first direction is perpendicular to the second direction.

4. The waterproof plug assembly according to claim 3, characterized in that: A finger-shaped pressing position is provided on the second cone wall.

5. The waterproof plug assembly according to claim 1, characterized in that: The first plug-in portion includes a connected second main body portion and a limiting portion, the limiting portion is connected to the second plug-in portion on a side facing away from the second main body portion, at least a portion of the structure of the second main body portion can be clamped on one end of the wire outlet of the electric support rod through elastic deformation, and the limiting portion can limit the length of the second plug-in portion inserted in the sealing connection portion and the second main body portion inserted in one end of the wire outlet.

6. The waterproof plug assembly according to claim 5, characterized in that: A wedge block is provided on the side wall of the second main body along the second direction, and at least part of the structure of the wedge block protrudes relative to the outer surface of the side wall. A first hollow structure is provided between the wedge block and the side wall along the first direction, and a second hollow structure is provided between the wedge block and the side wall or the limiting portion along the third direction. The wedge block can be clamped on one end of the wire outlet of the electric support rod by elastic deformation; wherein the first direction, the second direction and the third direction are perpendicular to each other.

7. The waterproof plug assembly according to claim 6, characterized in that: The end surface of the wedge block facing the limiting portion is a plane. When the wedge block is clamped on one end of the wire outlet of the electric support rod, the end surface of the wedge block facing the limiting portion is attached to the annular inner edge of one end of the wire outlet.

8. The waterproof plug assembly according to claim 6, characterized in that: A limiting step is provided at one end of the wedge block facing the limiting portion. When the wedge block is clamped on one end of the wire outlet of the electric support rod, the first surface of the limiting step is attached to the bottom surface of the annular inner edge of one end of the wire outlet, and the second surface of the limiting step is attached to the inner wall of the annular inner edge of one end of the wire outlet; wherein the first surface is perpendicular to the second surface.

9. The waterproof plug assembly according to claim 1, characterized in that: The lead wire portion is a corrugated tube.

10. An electric support pole, characterized in that: include: External pipe; A motor is disposed in the outer tube; A ball-and-socket connection end piece is fixed to one end of the outer tube, the ball-and-socket connection end piece comprises an outer tube connection portion, a ball-and-socket portion and a transition portion connected between the outer tube connection portion and the ball-and-socket portion, the outer tube connection portion is inserted into one end of the outer tube and connected to the outer tube by laser welding, the transition portion is provided with a wire outlet, and the wire outlet is away from the notch of the ball-and-socket portion; A waterproof plug assembly is inserted into the wire outlet and clamped at one end of the wire outlet, and the lead wire of the motor can pass through the wire outlet and pass through the waterproof plug assembly; Wherein, the waterproof plug assembly is the waterproof plug assembly as described in any one of claims 1-9.

11. The electric strut according to claim 10, characterized in that: The wire outlet is in an oblate shape as a whole, and the central axis of the wire outlet intersects with the central axis of the outer tube.

12. The electric strut according to claim 10, characterized in that: The plug of the waterproof plug assembly spans the other end of the wire outlet, and the distance between the plug and the central axis of the outer tube is less than or equal to half of the outer diameter of the outer tube.

13. A vehicle, characterized in that: Comprising an electric strut as described in any one of claims 10-12.

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