Waterproof wire harness assembly for electric supporting rod of automobile tail door

Abstract

According to the waterproof wire harness assembly used for the automobile tail door electric supporting rod, the locking sleeve is additionally arranged between the soft rubber sealing sleeve and the ball head wire outlet pipe, only the soft rubber sealing sleeve needs to be sleeved and fixed on the locking sleeve, and then the locking sleeve is sleeved on the ball head wire outlet pipe in an interference fit mode. When the locking sleeve and the ball head wire outlet pipe are assembled in place, after the first clamping part on the ball head wire outlet pipe clamps the second clamping part on the locking sleeve, the soft rubber sealing sleeve can be stably locked on the ball head wire outlet pipe through the locking sleeve. Therefore, the problem that in the prior art, due to the fact that the wire harness is driven to move repeatedly in the repeated opening and closing process of the electric tail door of the automobile, the waterproof rubber sleeve is prone to loosening and water leakage, and sealing failure is caused is effectively solved, and even if the electric wire harness is driven to move repeatedly in the repeated opening and closing process of the electric tail door of the automobile. And the soft rubber sealing sleeve can be prevented from loosening and leaking water, so that the sealing failure of the soft rubber sealing sleeve is avoided, and the waterproof sealing performance of the waterproof wire harness assembly of the automobile tail door electric supporting rod is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, and in particular relates to a waterproof wiring harness assembly for an electric support rod of an automobile tailgate. Background Art

[0002] The electric strut is an important executive part of the electric tailgate system of the car, which realizes the opening and closing of the car tailgate. At present, the ball head wiring harness outlet of the electric strut is generally covered with a wire harness waterproof rubber sleeve on the ball head outlet tube. The ball head tube outlet is provided with a raised step on the outer circle of the edge. The raised edge and the waterproof rubber sleeve are interference fit to achieve the sealing of the wire harness outlet. However, as the electric tailgate of the car is repeatedly opened and closed, the wiring harness is driven to move repeatedly, which will cause slight pulling and vibration to the waterproof rubber sleeve, causing the waterproof rubber sleeve to loosen and leak easily. If the waterproof rubber sleeve seal fails and water seeps into the motor, the motor is at risk of burning, causing the electric strut to fail. Utility Model Content

[0003] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the utility model is to provide a waterproof wiring harness assembly for the electric support rod of the automobile tailgate, so as to solve the problem in the prior art that the wiring harness is repeatedly moved during the repeated opening and closing of the automobile electric tailgate, causing the waterproof rubber sleeve to loosen and leak easily, resulting in sealing failure.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a waterproof wiring harness assembly for an electric support rod of a car tailgate, comprising:

[0005] The electric strut ball head is used to connect one end of the electric strut to the vehicle body or the tailgate of the vehicle, and the electric strut ball head is provided with a ball head outlet pipe for leading the wire harness out of the electric strut;

[0006] A wiring harness assembly, comprising a conductive wiring harness for electrically connecting to a motor inside the electric strut and a soft rubber sealing tube sleeved on the conductive wiring harness; and

[0007] A waterproof sealing assembly, comprising a soft rubber sealing sleeve connected to one end of the soft rubber sealing tube and a locking sleeve for locking the soft rubber sealing sleeve on the ball head outlet tube, the soft rubber sealing sleeve is mounted and fixed on the locking sleeve, and the locking sleeve is used to be sleeved on the ball head outlet tube with an interference fit;

[0008] Among them, at least two first locking parts are provided on the outer circumferential surface of the ball head outlet tube, and at least two second locking parts are provided on the inner circumferential surface of the locking sleeve for respectively locking and cooperating with the two first locking parts; when the locking sleeve and the ball head outlet tube are assembled in place, the first locking part locks the second locking part to lock the locking sleeve on the ball head outlet tube.

[0009] Furthermore, the first locking portion is a first convex ring arranged on the outer circumferential surface of the ball head outlet tube, and the cross-section of the first convex ring is barb-shaped; the second locking portion is a second convex ring matchedly arranged on the inner circumferential surface of the locking sleeve, and the cross-section of the second convex ring is barb-shaped.

[0010] Furthermore, an annular groove for accommodating and positioning the locking sleeve is provided on the inner circumferential surface of the soft rubber sealing sleeve, and the locking sleeve is embedded in the annular groove with an interference fit.

[0011] Furthermore, a step surface is formed at the connection between the ball head outlet tube and the electric strut ball head, and the end of the soft rubber sealing sleeve facing away from the soft rubber sealing tube has a waterproof edge; when the locking sleeve and the ball head outlet tube are assembled in place, the end of the locking sleeve facing away from the soft rubber sealing tube presses the waterproof edge against the step surface.

[0012] Furthermore, a first annular protrusion with an arc-shaped or semicircular cross-section and a second annular protrusion with a rectangular or trapezoidal cross-section are convexly provided on the outer circumferential surface of the locking sleeve, and a first annular groove and a second annular groove are correspondingly concavely provided on the inner circumferential surface of the soft rubber sealing sleeve, the first annular protrusion is embedded in the first annular groove with an interference fit, and the second annular protrusion is embedded in the second annular groove with an interference fit.

[0013] Furthermore, the soft rubber sealing tube is a corrugated tube.

[0014] Furthermore, the soft rubber sealing sleeve is an elastic rubber sleeve.

[0015] Furthermore, the locking sleeve is a hard nylon sleeve, and the ball head outlet tube is a hard nylon tube.

[0016] Furthermore, the wiring harness assembly also includes a limiting tube for limiting the position of the conductive wiring harness, and the conductive wiring harness can be slidably inserted in the limiting tube.

[0017] Furthermore, the ball head outlet pipe and the electric strut ball head are integrally formed, and the soft rubber sealing tube and the soft rubber sealing sleeve are integrally formed.

[0018] Compared with the prior art, the above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects:

[0019] The waterproof wiring harness assembly for the electric support rod of the automobile tailgate in the embodiment of the utility model is provided with a locking sleeve between the soft rubber sealing sleeve and the ball head outlet pipe. It is only necessary to fit the soft rubber sealing sleeve and fix it on the locking sleeve, and then the locking sleeve is sleeved on the ball head outlet pipe with interference fit. When the locking sleeve and the ball head outlet pipe are assembled in place, after the first stopper on the ball head outlet pipe stops the second stopper on the locking sleeve, the soft rubber sealing sleeve can be firmly locked on the ball head outlet pipe through the locking sleeve, thereby effectively overcoming the problem in the prior art that the wiring harness is repeatedly moved during the repeated opening and closing of the automobile electric tailgate, causing the waterproof rubber sleeve to be easily loosened and leaked, resulting in sealing failure. Even if the conductive wiring harness is repeatedly moved during the repeated opening and closing of the automobile electric tailgate, the soft rubber sealing sleeve can be prevented from loosening and leaking, thereby avoiding sealing failure of the soft rubber sealing sleeve, effectively improving the waterproof sealing performance of the waterproof wiring harness assembly, and thus ensuring the stable reliability of the operation of the automobile tailgate electric support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 these drawings without paying creative labor.

[0021] Figure 1 A three-dimensional structural schematic diagram of a waterproof wiring harness assembly for an electric support rod of a car tailgate provided by the utility model;

[0022] Figure 2 A schematic cross-sectional view of a waterproof wiring harness assembly for an electric support rod of a car tailgate provided by the utility model;

[0023] Figure 3 for Figure 2 A schematic diagram of the partially enlarged structure;

[0024] Figure 4 A schematic diagram of the three-dimensional structure of the electric strut ball head provided by the utility model;

[0025] Figure 5 A schematic diagram of the three-dimensional structure of the soft rubber sealing sleeve provided by the utility model;

[0026] Figure 6 A partial cross-sectional structural schematic diagram of the soft rubber sealing sleeve provided by the utility model;

[0027] Figure 7 A three-dimensional structural schematic diagram of the locking sleeve provided by the utility model;

[0028] Figure 8The utility model is an exploded view of a waterproof wiring harness assembly for an electric support rod of a car tailgate.

[0029] Among them, the reference numerals in the figure are:

[0030] 1-Electric strut ball head;

[0031] 2-wiring harness assembly; 21-conductive harness; 22-soft rubber sealing tube; 23-limiting tube;

[0032] 3-waterproof sealing assembly; 31-soft rubber sealing sleeve; 311-ring groove; 312-waterproof edge; 313-first ring groove; 314-second ring groove; 32-locking sleeve; 321-second stopper; 322-first ring protrusion; 323-second ring protrusion;

[0033] 4-ball head outlet pipe; 41-first stopper;

[0034] 5- Step surface. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] It should be noted that when an element is referred to as "connected to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly specified and specifically defined. In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0037] Reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, when the phrases "in one embodiment," "in some embodiments," or "in some of these embodiments" appear in various places throughout the specification, not all references are to the same embodiment. Furthermore, in one or more embodiments, the particular features, structures, or characteristics may be combined in any suitable manner.

[0038] Please also read Figures 1 to 8 The waterproof wiring harness assembly for the electric strut of the tailgate of the automobile provided by the embodiment of the utility model is now described. The waterproof wiring harness assembly for the electric strut of the tailgate of the automobile provided by the embodiment of the utility model comprises an electric strut ball head 1, a wiring harness assembly 2 and a waterproof sealing assembly 3. The electric strut ball head 1 is used to connect one end of the electric strut with the automobile body or the tailgate of the automobile. The electric strut ball head 1 is provided with a ball head outlet pipe 4 for the wiring harness to be led out from the inside of the electric strut. The wiring harness assembly 2 comprises a conductive wire harness 21 for electrically connecting to the motor inside the electric strut and a soft rubber sealing tube 22 sleeved on the conductive wire harness 21. The waterproof sealing assembly 3 comprises a soft rubber sealing sleeve 31 connected to one end of the soft rubber sealing tube 22 and a locking sleeve 32 for locking the soft rubber sealing sleeve 31 on the ball head outlet pipe 4. The soft rubber sealing sleeve 31 is installed and fixed on the locking sleeve 32. The locking sleeve 32 is used to be sleeved on the ball head outlet pipe 4 with an interference fit. Among them, at least two first stop parts 41 are provided on the outer circumference of the ball head outlet tube 4, and at least two second stop parts 321 are provided on the inner circumference of the locking sleeve 32 for respectively locking and cooperating with the two first stop parts 41. When the locking sleeve 32 and the ball head outlet tube 4 are assembled in place, the first stop part 41 locks the second stop part 321 to lock the locking sleeve 32 on the ball head outlet tube 4, thereby firmly locking the soft rubber sealing sleeve 31 on the ball head outlet tube 4, even if the wiring harness is repeatedly moved during the repeated opening and closing of the electric tailgate of the automobile, the soft rubber sealing sleeve 31 can be prevented from loosening and leaking, thereby avoiding the sealing failure of the soft rubber sealing sleeve 31.

[0039] Compared with the prior art, the waterproof wiring harness assembly for the electric support rod of the automobile tailgate provided by the embodiment of the utility model has a locking sleeve 32 added between the soft rubber sealing sleeve 31 and the ball head outlet pipe 4, and only the soft rubber sealing sleeve 31 needs to be installed and fixed on the locking sleeve 32, and then the locking sleeve 32 is sleeved on the ball head outlet pipe 4 with an interference fit. When the locking sleeve 32 and the ball head outlet tube 4 are assembled in place, after the first locking portion 41 on the ball head outlet tube 4 locks the second locking portion 321 on the locking sleeve 32, the soft rubber sealing sleeve 31 can be firmly locked on the ball head outlet tube 4 through the locking sleeve 32, thereby effectively overcoming the problem in the prior art that the wiring harness is repeatedly moved during the repeated opening and closing of the electric tailgate of the automobile, causing the waterproof rubber sleeve to easily loosen and leak, resulting in sealing failure. Even if the conductive wiring harness 21 is repeatedly moved during the repeated opening and closing of the electric tailgate of the automobile, the soft rubber sealing sleeve 31 can be prevented from loosening and leaking, thereby avoiding sealing failure of the soft rubber sealing sleeve 31, effectively improving the waterproof sealing performance of the waterproof wiring harness assembly, and thus ensuring the stable reliability of the operation of the electric support rod of the automobile tailgate.

[0040] Please refer to Figure 2 , Figure 3 , Figure 4 and Figure 7 In some embodiments, the first locking portion 41 is a first convex ring arranged on the outer circumferential surface of the ball head outlet tube 4, and the second locking portion 321 is a second convex ring matchedly arranged on the inner circumferential surface of the locking sleeve 32. The cross-section of the first convex ring is barbed, and the cross-section of the second convex ring is barbed. The first convex ring with a barbed cross-section is clamped by the second convex ring with a barbed cross-section, which is conducive to improving the stability and reliability of the locking sleeve 32 being assembled on the ball head outlet tube 4, and then the soft rubber sealing sleeve 31 is firmly locked on the ball head outlet tube 4 through the locking sleeve 32. Even if the conductive wiring harness 21 is repeatedly moved during the repeated opening and closing of the electric tailgate of the automobile, the soft rubber sealing sleeve 31 can be prevented from loosening and leaking, thereby avoiding the sealing failure of the soft rubber sealing sleeve 31, effectively improving the waterproof sealing performance of the waterproof wiring harness assembly, and then ensuring the stable reliability of the electric support rod of the automobile tailgate.

[0041] Please refer to Figure 2 , Figure 3 and Figure 6 In some of the embodiments, in order to further enhance the stability of the assembly of the soft rubber sealing sleeve 31 and the locking sleeve 32 and prevent the soft rubber sealing sleeve 31 and the locking sleeve 32 from moving relative to each other due to the traction and pulling of the conductive wire harness 21, an annular groove 311 for accommodating and positioning the locking sleeve 32 is provided on the inner circumferential surface of the soft rubber sealing sleeve 31, and the locking sleeve 32 is embedded in the annular groove 311 with an interference fit.

[0042] Please refer to Figure 1 , Figure 2 and Figure 3In some embodiments, a step surface 5 is formed at the connection between the ball head outlet tube 4 and the electric strut ball head 1, and the end of the soft rubber sealing sleeve 31 away from the soft rubber sealing tube 22 has a waterproof edge 312. When the locking sleeve 32 and the ball head outlet tube 4 are assembled in place, the end of the locking sleeve 32 away from the soft rubber sealing tube 22 presses the waterproof edge 312 against the step surface 5, which is beneficial to improve the waterproof sealing performance on the one hand, and can enhance the stability of the assembly of the soft rubber sealing sleeve 31 and the ball head outlet tube 4 on the other hand.

[0043] Please refer to Figure 1 , Figure 4 and Figure 8 In some embodiments, the outer circumference of the locking sleeve 32 is provided with a first annular protrusion 322 with an arc or semicircular cross section and a second annular protrusion 323 with a rectangular or trapezoidal cross section, and the inner circumference of the soft rubber sealing sleeve 31 is provided with a first annular groove 313 and a second annular groove 314, respectively. The first annular protrusion 322 is inserted into the first annular groove 313 by interference fit, and the second annular protrusion 323 is inserted into the second annular groove 314 by interference fit, which can further enhance the stability of the assembly of the soft rubber sealing sleeve 31 and the locking sleeve 32. It should be noted that the first annular groove 313 and the second annular groove 314 are located in the annular groove 311.

[0044] In some of the embodiments, the soft rubber sealing tube 22 is a corrugated tube, the soft rubber sealing sleeve 31 is an elastic rubber sleeve, the locking sleeve 32 is a hard nylon sleeve, and the ball head outlet tube 4 is a hard nylon tube, which helps to prevent the soft rubber sealing sleeve 31 and the locking sleeve 32 from being pulled by the conductive wire harness 21 and causing relative movement.

[0045] Please refer to Figure 2 and Figure 8 In some of the embodiments, the wiring harness assembly 2 also includes 23 for limiting the conductive wiring harness 21 , and the conductive wiring harness 21 can be slidably inserted in 23 , which helps to avoid wear between the conductive wiring harness 21 and the soft rubber sealing tube 22 .

[0046] Please refer to Figure 2 , Figure 3 and Figure 6 In some of the embodiments, the ball head outlet pipe 4 and the electric strut ball head 1 are integrally formed, and the soft rubber sealing tube 22 and the soft rubber sealing sleeve 31 are integrally formed.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waterproof wiring harness assembly for an electric support rod of a car tailgate, characterized in that: include: The electric strut ball head is used to connect one end of the electric strut to the vehicle body or the tailgate of the vehicle, and the electric strut ball head is provided with a ball head outlet pipe for leading the wire harness out of the electric strut; A wiring harness assembly, comprising a conductive wiring harness for electrically connecting to a motor inside the electric strut and a soft rubber sealing tube sleeved on the conductive wiring harness; as well as A waterproof sealing assembly, comprising a soft rubber sealing sleeve connected to one end of the soft rubber sealing tube and a locking sleeve for locking the soft rubber sealing sleeve on the ball head outlet tube, the soft rubber sealing sleeve is mounted and fixed on the locking sleeve, and the locking sleeve is used to be sleeved on the ball head outlet tube with an interference fit; Among them, at least two first locking parts are provided on the outer circumferential surface of the ball head outlet tube, and at least two second locking parts are provided on the inner circumferential surface of the locking sleeve for respectively locking and cooperating with the two first locking parts; when the locking sleeve and the ball head outlet tube are assembled in place, the first locking part locks the second locking part to lock the locking sleeve on the ball head outlet tube.

2. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate according to claim 1, characterized in that: The first locking portion is a first convex ring arranged on the outer circumference of the ball head outlet tube, and the cross section of the first convex ring is barb-shaped; the second locking portion is a second convex ring matchedly arranged on the inner circumference of the locking sleeve, and the cross section of the second convex ring is barb-shaped.

3. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 1, characterized in that: An annular groove for accommodating and positioning the locking sleeve is provided on the inner circumferential surface of the soft rubber sealing sleeve, and the locking sleeve is embedded in the annular groove with interference fit.

4. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 1, characterized in that: A step surface is formed at the connection between the ball head outlet tube and the electric strut ball head, and the end of the soft rubber sealing sleeve facing away from the soft rubber sealing tube has a waterproof edge; when the locking sleeve and the ball head outlet tube are assembled in place, the end of the locking sleeve facing away from the soft rubber sealing tube presses the waterproof edge against the step surface.

5. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 4, characterized in that: A first annular protrusion with an arc-shaped or semicircular cross-section and a second annular protrusion with a rectangular or trapezoidal cross-section are convexly provided on the outer circumferential surface of the locking sleeve, and a first annular groove and a second annular groove are correspondingly concavely provided on the inner circumferential surface of the soft rubber sealing sleeve, the first annular protrusion is embedded in the first annular groove with an interference fit, and the second annular protrusion is embedded in the second annular groove with an interference fit.

6. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 1, characterized in that: The soft rubber sealing tube is a corrugated tube.

7. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 1, characterized in that: The soft rubber sealing sleeve is an elastic rubber sleeve.

8. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate as claimed in claim 1, characterized in that: The locking sleeve is a hard nylon sleeve, and the ball head outlet tube is a hard nylon tube.

9. The waterproof wiring harness assembly for the electric support rod of the automobile tailgate according to any one of claims 1 to 8, characterized in that: The wiring harness assembly further comprises a limiting tube for limiting the position of the conductive wiring harness, and the conductive wiring harness can be slidably inserted in the limiting tube.

10. The waterproof wiring harness assembly for an electric support rod of a car tailgate according to any one of claims 1 to 8, characterized in that: The ball head outlet pipe is integrally formed with the electric strut ball head, and the soft rubber sealing tube is integrally formed with the soft rubber sealing sleeve.

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