Damper for tailgate drive system, tailgate drive system and automobile

Abstract

The present disclosure provides a damper for a tailgate drive system, comprising: two or more first gaskets; at least one second gasket disposed between the two first gaskets; a third gasket disposed between the first and second gaskets; and a pressure providing unit configured to apply pressure to the two or more first gaskets, the at least one second gasket, and the third gasket, such that when the second gasket is driven to rotate relative to the first gasket, friction is generated between the first gasket and the third gasket, and between the second gasket and the third gasket. The present disclosure also provides a tailgate drive system and a vehicle.

Description

Technical Field

[0001] The present disclosure belongs to the technical field of automobile electric tailgate drive systems, and in particular relates to a damper for a tailgate drive system, a tailgate drive system, and an automobile. Background Art

[0002] In the automotive market, with the popularization of product intelligence and electrification trends, more and more brands of vehicles are equipped with electric tailgate systems, which can automatically open and close the tailgate through the electric tailgate drive system, thereby greatly improving user convenience.

[0003] In the existing technology, most electric tailgate systems are driven by an electric prop. The electric prop mainly consists of components such as a motor and a spring. The spring is used to balance the weight of the tailgate, while the motor is used to push the tailgate open and close.

[0004] Due to cost considerations, some models utilize a single-sided drive system, with an electric strut on one side and a stabilizer bar on the other. To ensure the tailgate remains in a hovering position at any opening angle, a high-friction gas spring is typically added to the stabilizer bar. However, this friction gas spring's complex structure and cumbersome manufacturing process lead to high costs, hindering further application. Summary of the Invention

[0005] In order to solve at least one of the above technical problems, the present disclosure provides a damper for a tailgate drive system, a tailgate drive system, and a vehicle. The damper of the present disclosure is particularly suitable for an electric tailgate drive system.

[0006] The damper for the tailgate drive system, the tailgate drive system, and the automobile disclosed in the present invention are implemented through the following technical solutions.

[0007] According to one aspect of the present disclosure, a damper for a tailgate drive system is provided, comprising: two or more first gaskets; at least one second gasket, the second gasket being arranged between the two first gaskets; a third gasket, the third gasket being arranged between the first gasket and the second gasket; and a pressure providing portion, the pressure providing portion being used to apply pressure to the two or more first gaskets, the at least one second gasket, and the third gasket, so that when the second gasket is driven to rotate relative to the first gasket, friction is generated between the first gasket and the third gasket, and between the second gasket and the third gasket.

[0008] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, the second gasket has a second gasket through-hole, and the second gasket can be driven by the rotation of the drive shaft to rotate.

[0009] According to the damper for a tailgate drive system of at least one embodiment of the present disclosure, the first gasket has a first gasket through-hole, the drive shaft outside the damper can pass through the first gasket through-hole, and the first gasket is not driven by the rotation of the drive shaft.

[0010] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, the third gasket has a third gasket through-hole, the drive shaft outside the damper can pass through the third gasket through-hole, and the third gasket is not driven by the rotation of the drive shaft.

[0011] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, at least one protrusion is formed on the surface of the first gasket, and the at least one protrusion can pass through the third gasket through hole of the third gasket and contact the surface of the second gasket, so that when the second gasket rotates, the second gasket can generate friction with the first gasket.

[0012] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the at least one protrusion formed on the surface of the first gasket is formed at a position adjacent to the first gasket through-hole.

[0013] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, there are a plurality of the at least one protrusion, and the plurality of protrusions are evenly arranged along the circumferential direction.

[0014] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the protrusion is formed integrally with the first gasket.

[0015] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the end portion of the protrusion for contacting the second gasket has a shape matching that of a surface of the second gasket.

[0016] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the at least one protrusion is formed on a hole wall of the first gasket through hole.

[0017] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the protrusions protrude toward both surfaces of the first gasket.

[0018] According to the damper for a tailgate drive system of at least one embodiment of the present disclosure, when the second gasket rotates, it is subjected to the friction force of the two adjacent first gaskets and the friction force of the two adjacent third gaskets.

[0019] According to at least one embodiment of the present disclosure, the damper for the tailgate drive system further includes a damper housing having a receiving cavity formed therein for receiving the two or more first gaskets, the at least one second gasket, and the third gasket.

[0020] According to at least one embodiment of the present disclosure, the damper for a tailgate drive system comprises a damper housing having a bottom wall and a circumferential wall integrally formed with the bottom wall, and the accommodating cavity is formed by the bottom wall and the circumferential wall; a housing through hole is formed on the bottom wall of the damper housing 101, and a drive shaft outside the damper can pass through the housing through hole.

[0021] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the first gasket is fixed within the damper housing such that the first gasket cannot rotate in a circumferential direction.

[0022] According to at least one embodiment of the present disclosure, a damper for a tailgate drive system is provided with a plurality of first protrusions along the circumferential direction on the inner side of the circumferential wall of the damper housing, a first recess is formed between each two adjacent first protrusions, and the plurality of first protrusions have an extended dimension along the axial direction of the damper housing in the first part of the inner side of the circumferential wall.

[0023] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, a plurality of second protrusions are formed on the circumferential edge of the first gasket, a second recess is formed between each two adjacent second protrusions, the first protrusion of the damper housing and the second recess of the first gasket have a matching shape, and the first recess of the damper housing and the second protrusion of the first gasket have a matching shape.

[0024] According to the damper for a tailgate drive system of at least one embodiment of the present disclosure, splines are formed on a wall of the second gasket through-hole of the second gasket, and the second gasket is connected to a drive shaft outside the damper via the splines.

[0025] According to at least one embodiment of the present disclosure, the damper for the tailgate drive system further includes a damper end cover, the outer peripheral surface of the damper end cover is formed with a thread, and the inner side surface of the circumferential wall of the damper housing away from the bottom wall is formed with a thread, and the damper end cover and the damper housing are threadedly matched so that the damper end cover can be screwed into the damper housing.

[0026] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, the amount of pressure applied by the pressure providing part to the more than two first gaskets, the at least one second gasket, and the third gasket is adjusted by adjusting the amount by which the damper end cover is screwed into the damper housing.

[0027] According to a damper for a tailgate drive system of at least one embodiment of the present disclosure, the damper end cover includes an outer annular portion and an inner annular portion, the thread of the damper end cover is formed on the outer surface of the outer annular portion, and an annular cavity is formed between the outer annular portion and the inner annular portion to accommodate at least a portion of the pressure providing portion.

[0028] According to the damper for a tailgate driving system of at least one embodiment of the present disclosure, the pressure providing part is a spring.

[0029] According to the damper for the tailgate drive system of at least one embodiment of the present disclosure, the outer annular portion and the inner annular portion of the damper end cover are an integral structure, and the damper end cover has an end cover through hole, which can be passed by a drive shaft outside the damper.

[0030] According to the damper for a tailgate drive system of at least one embodiment of the present disclosure, a mounting portion is formed on an outer surface of the damper housing, and the damper can be fixed within the tailgate drive system through the mounting portion.

[0031] According to another aspect of the present disclosure, a tailgate driving system is provided, comprising the damper described in any one of the above items.

[0032] According to yet another aspect of the present disclosure, a vehicle is provided, comprising the above-mentioned tailgate drive system. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0034] Figure 1 FIG. 4 is an exploded view of a damper for an electric tailgate driving system according to an embodiment of the present disclosure.

[0035] Figure 2 1 is an axial cross-sectional structural diagram of a damper for an electric tailgate driving system according to one embodiment of the present disclosure.

[0036] Figure 3Schematic diagram of the connection between a first gasket and a damper housing of a damper for an electric tailgate driving system according to one embodiment of the present disclosure.

[0037] Description of Reference Numerals

[0038] 100Damper for electric tailgate drive system

[0039] 101 damper housing

[0040] 1011 Installation Department

[0041] 1012 shell through hole

[0042] 1013 first convex part

[0043] 1014 first concave part

[0044] 102 first gasket

[0045] 1021 first gasket through hole

[0046] 1022 second convex part

[0047] 1023 second recess

[0048] 1024 raised part

[0049] 103 second gasket

[0050] 1031 second gasket through hole

[0051] 104 Pressure Supply Unit

[0052] 105 damper end cap

[0053] 1051 outer ring

[0054] 1052 inner ring

[0055] 106 third gasket

[0056] 1061 third gasket through hole. DETAILED DESCRIPTION

[0057] The present disclosure will be 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 intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0058] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0059] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0060] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0061] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may be present. However, when a component is referred to as being “directly on,” “directly connected to,” or “directly coupled to” another component, there are no intervening components present. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0062] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., in a "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0063] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0064] Combine Figures 1 to 3 The damper for the tailgate driving system disclosed in the present invention is described in detail.

[0065] Figure 1 FIG. 1 is an exploded view of a damper 100 for an electric tailgate driving system according to an embodiment of the present disclosure. Figure 2 FIG. 1 is an axial cross-sectional structural diagram of a damper 100 for an electric tailgate driving system according to an embodiment of the present disclosure. Figure 3 1 is a schematic diagram illustrating the connection between a first gasket 102 and a damper housing 101 of a damper 100 for an electric tailgate driving system according to an embodiment of the present disclosure.

[0066] According to one embodiment of the present disclosure, a damper 100 for a tailgate drive system includes: two or more first gaskets 102; at least one second gasket 103, the second gasket 103 being arranged between the two first gaskets 102; a third gasket 106, the third gasket 106 being arranged between the first gasket 102 and the second gasket 103; and a pressure providing portion 104, the pressure providing portion 104 being used to apply pressure to the two or more first gaskets 102, the at least one second gasket 103 and the third gasket 106, so that when the second gasket 103 is driven to rotate relative to the first gasket 102, friction is generated between the first gasket 102 and the third gasket 106, and between the second gasket 103 and the third gasket 106.

[0067] Those skilled in the art will appreciate that the number of first and second gaskets 102, 103 can be adjusted based on the desired damping, depending on actual operating conditions. The basic principle is that any second gasket 103 needs to be sandwiched between the first gasket 102, 103, and the third gasket 106 is disposed between the first and second gaskets 102, 103.

[0068] For example, the installation order of the first gasket 102 , the second gasket 103 and the third gasket 106 is: first gasket 102 , third gasket 106 , second gasket 103 , third gasket 106 , first gasket 102 .

[0069] Figure 1 Three first gaskets 102, four third gaskets 106 and two second gaskets 103 are shown by way of example. Preferably, the second gasket 103 is circular in shape and the third gasket 106 is circular in shape. The pressure providing part 104 applies pressure to the three first gaskets 102, the four third gaskets 106 and the two second gaskets 103. When the two second gaskets 103 are driven by the driving shaft of the automobile tailgate driving system to rotate relative to the three first gaskets 102, friction is generated between the first gasket 102 and the third gasket 106 and between the third gasket 106 and the second gasket 103, so that the damper produces a damping effect.

[0070] It should be noted that both surfaces of the second gasket 103 of the damper 100 of the present disclosure are in contact with the surface of one third gasket 106 , that is, each second gasket 103 is disposed between two third gaskets 106 .

[0071] In the above embodiment, the second gasket 103 has a second gasket through hole 1031 , and the driving shaft outside the damper can pass through the second gasket through hole 1031 . The second gasket 103 can be driven by the rotation of the driving shaft to rotate.

[0072] In the above embodiment, the first gasket 102 has a first gasket through hole 1021 , and the driving shaft outside the damper can pass through the first gasket through hole 1021 . The first gasket 102 is not driven by the rotation of the driving shaft.

[0073] In the above embodiment, the third gasket 106 has a third gasket through hole 1061 , and the driving shaft outside the damper can pass through the third gasket through hole 1061 . The third gasket 106 is not driven by the rotation of the driving shaft.

[0074] Those skilled in the art will appreciate that the size of the first gasket through-hole 1021 must be larger than the size of the second gasket through-hole 1031 so that the first gasket 102 does not contact the drive shaft of the vehicle's tailgate drive system. The size of the third gasket through-hole 1061 must be larger than the size of the second gasket through-hole 1031 so that the third gasket 106 does not contact the drive shaft of the vehicle's tailgate drive system.

[0075] Therefore, when the driving shaft of the automobile tailgate driving system drives the second gasket 103 of the damper 100 to rotate, the second gasket 103 is subjected to the friction force of at least two third gaskets 106 adjacent to the second gasket 103 .

[0076] According to the damper 100 for the tailgate drive system of the preferred embodiment of the present disclosure, at least one protrusion 1024 is formed on the surface of the first gasket 102, and the at least one protrusion 1024 can pass through the third gasket through hole 1061 of the third gasket 106 and contact the surface of the second gasket 103, so that when the second gasket 103 rotates, the second gasket 103 can generate friction with the first gasket 102.

[0077] Therefore, when the driving shaft of the automobile tailgate driving system drives the second gasket 103 of the damper 100 to rotate, the second gasket 103 is subjected to the friction force of the two third gaskets 106 adjacent to the second gasket 103 and the friction force of the two adjacent first gaskets 102, further increasing the friction resistance of the second gasket 103 and further improving the sound quality of the damper 100.

[0078] By forming a plurality of protrusions 1024 on the surface of the first gasket 102, the plurality of protrusions 1024 are in contact with the second gasket 103, so that when the second gasket 103 rotates, it rubs against the first gasket 102 and the third gasket 106 at the same time, thereby further avoiding excessive wear of the third gasket 106; at the same time, since the protrusions 1024 of the first gasket 102 pass through the inner hole of the third gasket 106, the movement and deformation tendency of the third gasket 106 in the radial direction can be constrained on the inside, so that the radial position of the third gasket 106 is relatively stable, thereby ensuring the stability and consistency of the damping effect.

[0079] Preferably, the aperture of the third gasket through hole 1061 is larger than the aperture of the first gasket through hole 1021 .

[0080] In the above embodiment, the first gasket 102 is preferably made of metal material, and the third gasket 106 is preferably made of carbon fiber sheet. Those skilled in the art can make appropriate settings for the thickness of the first gasket 102 , the second gasket 103 and the third gasket 106 .

[0081] Preferably, the radial dimension of the third gasket 106 is slightly smaller than the radial dimension of the second gasket 103 .

[0082] Preferably, the at least one protrusion 1024 formed on the surface of the first gasket 102 of the damper 100 is formed at a position adjacent to the first gasket through hole 1021 .

[0083] Preferably, there are multiple at least one protrusion 1024 , and the multiple protrusions 1024 are evenly arranged along the circumferential direction.

[0084] Figure 1 exemplarily shown in FIG. 5 , each first gasket 102 has four protrusions 1024 .

[0085] Preferably, the protrusion 1024 is formed integrally with the first gasket 102 .

[0086] Preferably, the end portion of the protrusion 1024 for contacting the second gasket 103 has a shape matching the surface of the second gasket 103 , for example, the end portion is a flat shape.

[0087] Preferably, at least one protrusion 1024 is formed on the hole wall of the first gasket through hole 1021 .

[0088] Preferably, the protrusions 1024 protrude toward two surfaces of the first gasket 102 .

[0089] Due to the provision of the protrusion 1024 , when the second gasket 103 rotates, it is subjected to the friction force of the two adjacent first gaskets 102 (through the protrusion 1024 ) and the friction force of the two adjacent third gaskets 106 .

[0090] According to a preferred embodiment of the present disclosure, the damper 100 for the tailgate drive system further includes a damper housing 101 , which is formed with a receiving cavity for receiving more than two first gaskets 102 , at least one second gasket 103 and a third gasket 106 .

[0091] Preferably, the damper housing 101 has a bottom wall and a circumferential wall integrally formed with the bottom wall, and the accommodating cavity is formed by the bottom wall and the circumferential wall; a housing through hole 1012 is formed on the bottom wall of the damper housing 101, and the housing through hole 1012 can be passed through by a drive shaft outside the damper.

[0092] Preferably, the damper 100 for the tailgate drive system also includes a damper end cover 105, the outer peripheral surface of the damper end cover 105 is formed with a thread, and the inner side surface of the circumferential wall of the damper housing 101 away from the bottom wall is formed with a thread, and the damper end cover 105 and the damper housing 101 are matched through threads, so that the damper end cover 105 can be screwed into the damper housing 101.

[0093] Figure 1 as well as Figure 2 The threads on the outer surface of the damper end cap 105 are shown. Figure 2 It is shown that a thread is formed on the inner side surface of one end of the circumferential wall of the damper housing 101 .

[0094] The threads on the outer surface of the damper end cover 105 match the threads formed on the inner side surface of one end of the circumferential wall of the damper housing 101 .

[0095] Preferably, the first gasket 102 is fixed inside the damper housing 101 so that the first gasket 102 cannot rotate in the circumferential direction.

[0096] Preferably, if Figure 1 As shown, a plurality of first protrusions 1013 are provided along the circumferential direction on the inner side of the circumferential wall of the damper housing 101, and a first recess 1014 is formed between each two adjacent first protrusions 1013. The plurality of first protrusions 1013 have an extended dimension along the axial direction of the damper housing 101 in the first part of the inner side of the circumferential wall.

[0097] Figure 3 8 first convex portions 1013 and 8 first concave portions 1014 are exemplarily shown in FIG. , and those skilled in the art should understand that the number of the first convex portions 1013 and the first concave portions 1014 can be appropriately adjusted.

[0098] Correspondingly, a plurality of second protrusions 1022 are formed on the circumferential edge of the first gasket 102 of the damper 100 for the tailgate drive system, and a second recess 1023 is formed between each two adjacent second protrusions 1022. The first protrusion 1013 of the damper housing 101 and the second recess 1023 of the first gasket 102 have matching shapes, and the first recess 1014 of the damper housing 101 and the second protrusion 1022 of the first gasket 102 have matching shapes.

[0099] Figure 1 as well as Figure 3 Eight second convex portions 1022 and eight second concave portions 1023 are shown as an example. It should be understood by those skilled in the art that the number of the second convex portions 1022 and the second concave portions 1023 may also be appropriately adjusted.

[0100] According to a preferred embodiment of the present disclosure, a spline is formed on the wall of the second gasket through-hole 1031 of the second gasket 103, and the second gasket 103 is connected to the drive shaft outside the damper via the spline. The spline mates with the spline of the drive shaft of the vehicle tailgate drive system, allowing the second gasket 103 to be driven by the drive shaft.

[0101] In the above embodiment, the damper 100 for the tailgate drive system adjusts the amount of pressure applied by the pressure providing part 104 to two or more first gaskets 102, at least one second gasket 103 and the third gasket 106 by adjusting the amount by which the damper end cover 105 is screwed into the damper housing 101.

[0102] Preferably, the damper end cover 105 of the damper 100 for the tailgate drive system includes an outer annular portion 1051 and an inner annular portion 1052, the thread of the damper end cover 105 is formed on the outer surface of the outer annular portion 1051, and an annular cavity is formed between the outer annular portion 1051 and the inner annular portion 1052 to accommodate at least a portion of the pressure providing portion 104.

[0103] Through the structural design of the damper end cover 105 , the pressure providing portion 104 (preferably a spring) is fixed by the outer annular portion 1051 and the inner annular portion 1052 , thereby preventing the spring from twisting.

[0104] Preferably, the spring is in a compressed state, thereby providing positive pressure.

[0105] Figure 1 as well as Figure 2 The structure of the damper end cover 105 is exemplarily shown. The pressure providing part 104 is preferably a spring.

[0106] When the damper 100 disclosed herein is installed on an electric tailgate drive system of an automobile, the damper housing 101 is fixed in the electric tailgate drive system of the automobile, and the output shaft, i.e., the drive shaft, of the electric tailgate drive system of the automobile passes through the middle of the damper 100, and the drive shaft is connected to the second gasket 103 via a spline.

[0107] When the drive shaft rotates, the second gasket 103 is driven to rotate through the spline. Due to the friction between the second gasket 103 and the first gasket 102 and between the second gasket 103 and the third gasket 106, a reverse torque is generated to provide damping output.

[0108] In order to match the damping required by different automobile (electric) tailgates, the spring positive pressure can be changed by setting the number of spring coils and / or adjusting the thread depth of the damper end cap 105 screwed into the damper housing 101, thereby changing the friction force and achieving different damping outputs.

[0109] Preferably, the outer annular portion 1051 and the inner annular portion 1052 of the damper end cover 105 of the damper 100 for the tailgate drive system are an integrated structure, and the damper end cover 105 has an end cover through hole, which can be passed by the drive shaft of the automobile tailgate drive system.

[0110] According to a preferred embodiment of the present disclosure, a mounting portion 1011 is formed on the outer surface of the damper housing 101 of the damper 100 for the tailgate drive system, and the damper 100 can be fixed in the car tailgate drive system through the mounting portion 1011. The mounting portion 1011 can be a reinforcing rib. Figure 1 The structure of the mounting portion 1011 is exemplarily shown.

[0111] The damper for an electric tailgate actuation system disclosed herein can achieve variable damping by adjusting the spring or end cap, thereby adapting to different products. Specifically, the first gasket (i.e., fixed gasket) and the third gasket (i.e., damping gasket) simultaneously rub against the second gasket (i.e., moving gasket), resulting in stable damping and good sound. The damper for an electric tailgate actuation system disclosed herein has a simple structure, is easy to assemble, and is easily adjustable.

[0112] A tailgate driving system according to an embodiment of the present disclosure includes the damper 100 according to any one of the above embodiments.

[0113] A vehicle according to one embodiment of the present disclosure includes the tailgate driving system of the above-described embodiment.

[0114] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0115] 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 being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. Throughout the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0116] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present disclosure.

Claims

1. A damper for a tailgate drive system, characterized in that: include: Two or more first gaskets; at least one second gasket, the second gasket being disposed between the two first gaskets; a third gasket, the third gasket being disposed between the first gasket and the second gasket; as well as a pressure providing portion configured to apply pressure to the two or more first gaskets, the at least one second gasket, and the third gasket, so that when the second gasket is driven to rotate relative to the first gasket, frictional forces are generated between the first gasket and the third gasket, and between the second gasket and the third gasket; The third gasket has a third gasket through hole, the third gasket through hole can be passed through by a drive shaft outside the damper, and the third gasket is not driven by the rotation of the drive shaft; At least one protrusion is formed on the surface of the first gasket, and the at least one protrusion can pass through the third gasket through hole of the third gasket and contact the surface of the second gasket, so that when the second gasket rotates, the second gasket can generate friction with the first gasket; There are multiple at least one protrusion, and the multiple protrusions are evenly arranged along the circumferential direction.

2. The damper for the tailgate drive system according to claim 1, characterized in that: The second gasket has a second gasket through-hole, and a driving shaft outside the damper can pass through the second gasket through-hole. The second gasket can be driven by the rotation of the driving shaft to rotate.

3. The damper for a tailgate drive system according to claim 1, characterized in that: The first gasket has a first gasket through-hole, and the driving shaft outside the damper can pass through the first gasket through-hole. The first gasket is not driven by the rotation of the driving shaft.

4. The damper for a tailgate drive system according to claim 1, characterized in that: The at least one protrusion formed on the surface of the first gasket is formed at a position adjacent to the through hole of the first gasket.

5. The damper for a tailgate drive system according to claim 1, characterized in that: The protrusion is formed integrally with the first gasket.

6. The damper for a tailgate drive system according to claim 1, characterized in that: An end portion of the protrusion for contacting the second gasket has a shape matching a surface of the second gasket.

7. The damper for a tailgate drive system according to claim 1, characterized in that: The at least one protrusion is formed on a hole wall of the first gasket through hole.

8. The damper for a tailgate driving system according to claim 1, characterized in that: The protrusions protrude toward two surfaces of the first gasket.

9. The damper for a tailgate driving system according to claim 1, characterized in that: When the second gasket rotates, it is subjected to the friction force of the two adjacent first gaskets and the friction force of the two adjacent third gaskets.

10. The damper for a tailgate driving system according to any one of claims 1 to 4, characterized in that: A damper housing is further included. The damper housing is formed with a receiving cavity. The receiving cavity is used to receive the two or more first gaskets, the at least one second gasket, and the third gasket.

11. The damper for a tailgate driving system according to claim 10, characterized in that: The damper housing has a bottom wall and a circumferential wall integrally formed with the bottom wall, and the accommodating cavity is formed by the bottom wall and the circumferential wall; a housing through hole is formed on the bottom wall of the damper housing, and the housing through hole can be passed through by a drive shaft outside the damper.

12. The damper for a tailgate driving system according to claim 11, characterized in that: The first gasket is fixed in the damper housing so that the first gasket cannot rotate in the circumferential direction.

13. The damper for a tailgate driving system according to claim 12, wherein: A plurality of first protrusions are provided on the inner side of the circumferential wall of the damper housing along the circumferential direction, a first recess is formed between each two adjacent first protrusions, and the plurality of first protrusions have an extended dimension along the axial direction of the damper housing in the first part of the inner side of the circumferential wall.

14. The damper for a tailgate driving system according to claim 13, wherein: A plurality of second protrusions are formed on the circumferential edge of the first gasket, and a second recess is formed between each two adjacent second protrusions. The first protrusion of the damper housing and the second recess of the first gasket have matching shapes, and the first recess of the damper housing and the second protrusion of the first gasket have matching shapes.

15. The damper for a tailgate driving system according to claim 2, wherein: A spline is formed on a wall of the second gasket through hole of the second gasket, and the second gasket is connected to a driving shaft outside the damper through the spline.

16. The damper for a tailgate driving system according to claim 11, wherein: It also includes a damper end cover, the outer circumferential surface of which is formed with a thread, and the inner side surface of the circumferential wall of the damper housing away from the bottom wall is formed with a thread, and the damper end cover and the damper housing are matched through threads so that the damper end cover can be screwed into the damper housing.

17. The damper for a tailgate driving system according to claim 16, wherein: By adjusting the amount by which the damper end cover is screwed into the damper housing, the magnitude of the pressure applied by the pressure providing portion to the two or more first gaskets, the at least one second gasket, and the third gasket is adjusted.

18. The damper for a tailgate driving system according to claim 16, wherein: The damper end cover includes an outer annular portion and an inner annular portion, the thread of the damper end cover is formed on the outer surface of the outer annular portion, and an annular cavity is formed between the outer annular portion and the inner annular portion to accommodate at least a portion of the pressure providing portion.

19. The damper for a tailgate driving system according to claim 18, wherein: The pressure providing part is a spring.

20. The damper for a tailgate driving system according to claim 18, wherein: The outer annular portion and the inner annular portion of the damper end cover are an integrated structure. The damper end cover has an end cover through hole, and the drive shaft outside the damper can pass through the end cover through hole.

21. The damper for a tailgate driving system according to claim 10, wherein: An outer surface of the damper housing is formed with a mounting portion, through which the damper can be fixed within the tailgate driving system.

22. A tailgate drive system, characterized in that: A damper comprising the damper according to any one of claims 1 to 21.

23. An automobile, characterized in that: Including the tailgate drive system as described in claim 22.

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