Electric supporting rod and automobile

Abstract

The application relates to an electric supporting rod and a car, which comprise a transmission module, a damper end cover and a sealing element, a guide pipe module and a second sealing assembly, and a first sealing assembly arranged in a transmission box shell to realize sealing of the transmission box shell. Compared with the prior art, the electric supporting rod is fully designed for waterproofing and dustproofing, can effectively prevent water and dust in the external environment from entering the electric supporting rod, prevents corrosion and wear and tear, and guarantees the service life and reliability of the electric supporting rod.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to an electric strut and an automobile. Background Technology

[0002] Today, with the improvement of living standards and technological levels, consumers have increasingly higher requirements for car configurations, and electric tailgates have gained widespread popularity. The electric strut drive system enables automatic opening and closing of the tailgate, greatly enhancing the convenience of car use. Currently, the market offers two main types of electric tailgate systems: single-strut and dual-strut. The single-strut system uses an electric strut on one end and a combination of a gas strut and a mechanical spring on the other. However, the gas strut is significantly affected by temperature, resulting in large fluctuations in support force. Over time, if the output force values ​​of the two struts differ too much, the electric tailgate is prone to twisting and deformation, and the overall sheet metal rigidity of the electric tailgate is also relatively high. The dual-strut system, due to its dual-motor drive, is more expensive and faces less market competition.

[0003] However, regardless of the type, electric struts lack reliable waterproof and dustproof structural designs, making them prone to water and dust ingress when the car is driving in complex environments. This can cause corrosion and wear damage to the electric strut components, thereby affecting the service life and reliability of the electric struts. Summary of the Invention

[0004] Therefore, it is necessary to provide an electric strut and a car to solve the problem of poor waterproof and dustproof performance of existing technologies, which affects the service life and reliability of electric struts.

[0005] On one hand, this application provides an electric strut, the electric strut comprising:

[0006] A transmission module, the transmission module including a transmission housing and a first sealing assembly, the first sealing assembly being disposed on the transmission housing to achieve sealing of the transmission housing;

[0007] A damper end cap and a sealing element, wherein the damper end cap is sealed to the transmission housing via the sealing element; and

[0008] A conduit module and a second sealing assembly, wherein the second sealing assembly is disposed on the conduit module to achieve a seal between the conduit module and the transmission housing and the conduit module itself.

[0009] In the electric strut of the above-described solution, a first sealing component is designed and installed on the transmission housing to create a sealed space between the motor and the gear cavity, thus giving the transmission module excellent waterproof and dustproof capabilities. Furthermore, by adding a sealing element between the damper end cap and the transmission housing, a sealed space is created in the damper cavity, achieving waterproof and dustproof protection. In addition, a second sealing component is designed and installed on the guide tube module, enabling a sealed installation between the transmission housing and the guide tube module, as well as within the guide tube module itself, achieving waterproof and dustproof protection. Compared to existing technologies, the electric strut in this solution is fully designed for waterproofing and dustproofing, effectively preventing water and dust from the external environment from entering the electric strut, preventing corrosion and wear damage, and ensuring the service life and reliability of the electric strut.

[0010] The technical solution of this application will be further described below:

[0011] In one embodiment, the transmission housing includes a transmission housing rear cover and a transmission housing main housing, and the first sealing assembly includes a first sealing component, which is sealed between the transmission housing rear cover and the transmission housing main housing.

[0012] In one embodiment, the rear cover of the transmission box is provided with a plug-in end, the plug-in end is used to hide and install the connecting wire harness, and the outer wall of the plug-in end is provided with a connecting buckle.

[0013] In one embodiment, the transmission housing further includes a transmission front cover, and the first sealing assembly further includes a second sealing component, which is sealed between the transmission front cover and the transmission main housing.

[0014] In one embodiment, the damper end cap has a molding cavity, and the sealing element is integrally injection molded into the molding cavity.

[0015] In one embodiment, the conduit module includes an outer conduit inserted into the main housing of the transmission box, and the second sealing assembly includes a third sealing component that is sealed between the outer conduit and the main housing of the transmission box.

[0016] In one embodiment, one of the inner wall of the transmission housing and the outer peripheral wall of the third sealing component is provided with at least two first positioning grooves spaced apart along the axial direction, and the other of the inner wall of the transmission housing and the outer peripheral wall of the third sealing component is provided with at least two first positioning protrusions spaced apart along the axial direction, and the first positioning protrusions are inserted into the first positioning grooves one by one.

[0017] In one embodiment, the conduit module further includes an inner conduit inserted inside the outer conduit, and the second sealing assembly further includes a fourth sealing component that is sealed between the outer conduit and the inner conduit.

[0018] In one embodiment, the fourth sealing component has an annular structure, and one of the inner annular wall of the fourth sealing component and the outer peripheral wall of the inner conduit is provided with a second positioning groove, and the other of the inner annular wall of the fourth sealing component and the outer peripheral wall of the inner conduit is provided with a second positioning protrusion, which is inserted into the second positioning groove.

[0019] On the other hand, this application also provides a car comprising:

[0020] Body;

[0021] A car door, which is movably mounted on the vehicle body to perform opening and closing actions; and

[0022] As described above, the electric strut connects the door to the vehicle body. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the electric strut according to an embodiment of this application;

[0026] Figure 2 for Figure 1 Cross-sectional view of section AA;

[0027] Figure 3 for Figure 2 A magnified schematic diagram of the structure at point B in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 100. Electric strut; 10. Transmission module; 11. Damper end cap; 12. Sealing element; 13. Transmission box rear cover; 131. Plug-in end; 14. Transmission box main shell; 141. First positioning groove; 15. First sealing component; 16. Transmission box front cover; 17. Second sealing component; 18. Outer guide tube; 19. Third sealing component; 191. First positioning protrusion; 19a. Inner guide tube; 191a. Second positioning protrusion; 19b. Fourth sealing component; 191b. Second positioning groove. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] This application provides an automobile, which can be any type of motor vehicle in the prior art, such as a sedan, SUV, MPV, pickup truck, etc. Exemplarily, the automobile includes: a body, doors, and an electric strut 100, wherein the doors are movably disposed on the body to perform opening and closing actions. For example, the doors can refer to any type such as a tailgate or a scissor door. Taking a tailgate as an example, the tailgate can be installed at the rear of the vehicle body via a hinge or other rotating component or mechanism, and performs opening and closing actions by flipping upwards or downwards.

[0032] Furthermore, the door is connected to the vehicle body via the electric strut 100. The electric strut 100 provides the support and pushing force required for the door to open or close, thereby enabling automatic opening and closing of the door and improving the user experience.

[0033] like Figure 1 and Figure 2 As shown, an electric strut 100 is illustrated in one embodiment of this application. The electric strut 100 includes: a transmission module 10, a damper end cap 11, a sealing element 12, a conduit module, and a second sealing assembly.

[0034] The transmission module 10 includes a transmission housing and a first sealing assembly. The first sealing assembly is disposed on the transmission housing to achieve a seal on the transmission housing. The damper end cap 11 is sealed to the transmission housing through the sealing element 12. The second sealing assembly is disposed on the conduit module to achieve a seal between the conduit module and the transmission housing, as well as between the conduit module itself and the conduit module.

[0035] In summary, implementing the technical solution of this embodiment will have the following beneficial effects: In the electric strut 100 of the above solution, by designing and installing a first sealing component on the transmission housing, a sealed space can be formed between the motor and the gear cavity, thereby giving the transmission module 10 excellent waterproof and dustproof capabilities. Furthermore, by adding a sealing element 12 between the damper end cap 11 and the transmission housing, a sealed space can be formed in the damper cavity, achieving the purpose of waterproofing and dustproofing. In addition, by designing and installing a second sealing component on the guide tube module, the second sealing component can achieve a sealed installation between the transmission housing and the guide tube module, as well as inside the guide tube module, achieving the purpose of waterproofing and dustproofing. Compared with the prior art, the electric strut 100 of this solution is fully designed to be waterproof and dustproof, effectively preventing water and dust from the external environment from entering the interior of the electric strut 100, preventing corrosion and wear damage, and ensuring the service life and reliability of the electric strut 100.

[0036] In some embodiments, the damper end cap 11 is provided with a molding cavity, and the sealing element 12 is integrally injection molded into the molding cavity. Therefore, the sealing element 12 is securely and reliably connected to the damper end cap 11, and the sealing element 12 can be integrally molded with the damper end cap 11, reducing the number of parts and the difficulty of installation.

[0037] Please continue reading. Figure 2 and Figure 3 Specifically, in some embodiments, the transmission housing includes a transmission housing rear cover 13 and a transmission housing main shell 14. The first sealing assembly includes a first sealing component 15, which is sealed between the transmission housing rear cover 13 and the transmission housing main shell 14. The transmission housing rear cover 13 and the transmission housing main shell 14 are specifically cylindrical structures. One end of the transmission housing rear cover 13 has an annular retaining edge. During assembly, the first sealing component 15 is inserted into the inner side of the annular retaining edge, and then the first end of the transmission housing main shell 14 is inserted into the transmission housing rear cover 13 and abuts against the first sealing component 15, thus forming a sealed installation and achieving waterproof and dustproof effects.

[0038] Optionally, the first sealing component 15 may be, but is not limited to, a rubber sealing ring.

[0039] Based on the above embodiments, the transmission box rear cover 13 is provided with a plug-in end 131, which is used to conceal the installation of connecting wire harnesses. The outer wall of the plug-in end 131 is provided with a connecting buckle. Compared to the prior art where a wire outlet hole is opened, allowing the connecting wire harness to pass through, which is prone to water and dust leakage and poor sealing, this solution hides the connecting wire harness inside the plug-in end 131. The plug-in end 131 can be directly plugged into and assembled with the mating components and reliably fixed by the connecting buckle. The assembly method is simpler, and the connection sealing is better. The plug-in end 131 does not require holes and has its own waterproof function, fundamentally eliminating potential leakage.

[0040] Please continue reading. Figure 2 and Figure 3 Furthermore, based on any of the above embodiments, the transmission housing further includes a transmission housing front cover 16, and the first sealing assembly further includes a second sealing component 17, which is sealed between the transmission housing front cover 16 and the transmission housing main shell 14. Specifically, the end faces of the first end of the transmission housing front cover 16 and the second end of the transmission housing main shell 14 are both recessed into slots. The second sealing component 17 is simultaneously inserted into both slots. When the transmission housing front cover 16 and the transmission housing main shell 14 are connected and fastened together, the second sealing component 17 will deform under pressure, thereby sealing the assembly surface of the transmission housing front cover 16 and the transmission housing main shell 14.

[0041] Optionally, the second sealing component 17 is a rubber sealing ring formed by a two-stage injection molding process.

[0042] Please continue reading. Figure 3 In some embodiments, the conduit module includes an outer conduit 18, which is inserted into the main housing 14 of the transmission box. The second sealing assembly includes a third sealing component 19, which is sealed between the outer conduit 18 and the main housing 14 of the transmission box. Therefore, the third sealing component 19 is deformed by being pressed between the outer conduit 18 and the main housing 14 of the transmission box, thus filling the assembly gap tightly and achieving a waterproof and dustproof effect.

[0043] Optionally, the third sealing component 19 may be, but is not limited to, any one of the following: a rubber sealing ring, a rubber sleeve, an oil seal, etc.

[0044] Furthermore, based on the above embodiments, one of the inner wall of the transmission box main shell 14 and the outer peripheral wall of the third sealing component 19 is provided with at least two first positioning grooves 141 distributed axially at intervals, and the other of the inner wall of the transmission box and the outer peripheral wall of the third sealing component 19 is provided with at least two first positioning protrusions 191 distributed axially at intervals, and the first positioning protrusions 191 are inserted into the first positioning grooves 141 in a one-to-one correspondence.

[0045] At least two first positioning protrusions 191 are inserted into the first positioning grooves 141 in a one-to-one correspondence. This not only enables the axial positioning of the third sealing component 19, but also forms a multi-fold sealing structure arranged axially, further enhancing the water and dust blocking capabilities of the third sealing component 19.

[0046] Please continue reading. Figure 3Furthermore, in some embodiments, the conduit module further includes an inner conduit 19a, which is inserted into the outer conduit 18. The second sealing assembly also includes a fourth sealing component 19b, which is sealed between the outer conduit 18 and the inner conduit 19a. Therefore, the fourth sealing component 19b is deformed by being squeezed between the outer conduit 18 and the inner conduit 19a, tightly filling the assembly gap, thereby achieving a waterproof and dustproof effect.

[0047] Optionally, the fourth sealing component 19b may be, but is not limited to, any one of the following: a rubber sealing ring, a rubber sleeve, an oil seal, etc.

[0048] To ensure that the fourth sealing component 19b is securely installed and does not come loose, in some embodiments, the fourth sealing component 19b has an annular structure. One of the inner annular wall of the fourth sealing component 19b and the outer peripheral wall of the inner conduit 19a is provided with a second positioning groove 191b, and the other of the inner annular wall of the fourth sealing component 19b and the outer peripheral wall of the inner conduit 19a is provided with a second positioning protrusion 191a. The second positioning protrusion 191a is inserted into the second positioning groove 191b.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

Claims

1. An electric strut, characterized in that, The electric strut includes: A transmission module, the transmission module including a transmission housing and a first sealing assembly, the first sealing assembly being disposed on the transmission housing to achieve sealing of the transmission housing; The damper end cap and sealing element are provided, wherein the damper end cap is sealed to the transmission housing via the sealing element. A conduit module and a second sealing assembly, wherein the second sealing assembly is disposed on the conduit module to achieve a seal between the conduit module and the transmission housing and the conduit module itself; The catheter module includes an outer catheter and an inner catheter, with the inner catheter inserted inside the outer catheter. The second sealing assembly also includes a fourth sealing component, which is sealed between the outer catheter and the inner catheter. The transmission housing includes a main transmission housing, the outer conduit is inserted into the main transmission housing, and the second sealing assembly includes a third sealing component, which is sealed between the outer conduit and the main transmission housing; and One of the inner wall of the transmission box main shell and the outer peripheral wall of the third sealing component is provided with at least two first positioning grooves distributed axially at intervals, and the other of the inner wall of the transmission box and the outer peripheral wall of the third sealing component is provided with at least two first positioning protrusions distributed axially at intervals, and the first positioning protrusions are inserted into the first positioning grooves one by one.

2. The electric strut according to claim 1, characterized in that, The transmission housing also includes a transmission rear cover, and the first sealing assembly includes a first sealing component, which is sealed between the transmission rear cover and the transmission main housing.

3. The electric strut according to claim 2, characterized in that, The rear cover of the transmission box is provided with a plug-in end, which is used to hide and install the connecting wire harness. The outer wall of the plug-in end is provided with a connecting buckle.

4. The electric strut according to claim 2, characterized in that, The transmission housing also includes a transmission front cover, and the first sealing assembly further includes a second sealing component, which is sealed between the transmission front cover and the transmission main housing.

5. The electric strut according to claim 1, characterized in that, The damper end cap is provided with a molding cavity, and the sealing element is integrally injection molded in the molding cavity.

6. The electric strut according to claim 1, characterized in that, The fourth sealing component is any one of the following: rubber sealing ring, rubber sleeve, or oil seal.

7. The electric strut according to claim 6, characterized in that, The fourth sealing component has an annular structure. One of the inner annular wall of the fourth sealing component and the outer peripheral wall of the inner conduit is provided with a second positioning groove. The other of the inner annular wall of the fourth sealing component and the outer peripheral wall of the inner conduit is provided with a second positioning protrusion. The second positioning protrusion is inserted into the second positioning groove.

8. A car, characterized in that, include: Body; A car door, which is movably mounted on the vehicle body to perform opening and closing actions; as well as The electric strut as described in any one of claims 1 to 7, wherein the door is connected to the vehicle body via the electric strut.

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