A buffer device of a back door of a passenger car and a passenger car

Abstract

This application discloses a buffer device for the tailgate of a passenger vehicle and the passenger vehicle itself, relating to the field of automotive body manufacturing technology. The device includes: a main housing fixed to the surface of a body panel of the passenger vehicle, with a first buffer block on the side of the main housing away from the body panel, the first buffer block having a first inclined surface; a fixing plate fixed to the tailgate panel of the passenger vehicle, with a second buffer block on the fixing plate, the second buffer block having a second inclined surface facing the first inclined surface; and a lifting assembly disposed within the main housing, the lifting assembly being connected to the first buffer block. The lifting assembly adjusts the position of the first buffer assembly to ensure that the first buffer block and the second buffer block remain in contact when the tailgate is closed. Adjusting the height of the first buffer block via the lifting assembly ensures that the first and second buffer blocks remain in constant contact, providing sufficient buffering when the tailgate is closed.

Description

Technical Field

[0001] This application relates to the technical field of automobile body manufacturing, and in particular to a buffer device for the tailgate of a passenger car and the passenger car itself. Background Technology

[0002] As society continues to develop, consumers have a deeper understanding of automobiles and have higher and higher requirements for the comfort and ergonomics of modern sedans. As a major component of a hatchback, the tailgate is susceptible to rattling or scraping against other mating parts due to vibrations from bumpy roads during driving. Current technology typically involves directly installing rubber pads on the tailgate, which then contact the body for cushioning when the door closes. However, these rubber pads are prone to permanent deformation during use, resulting in loose contact with the body. Furthermore, due to limitations in the size of the buffer pads and the vehicle's structure, they cannot make proper contact with the body surface, requiring replacement with the same model of rubber pad to resolve the issue. Since they are in direct contact with the body, forces in different directions are generated during use, easily causing wear and tear on the rubber pads. Summary of the Invention

[0003] The purpose of this application is to provide a buffer device for the tailgate of a passenger car and a passenger car, so as to solve to some extent the technical problem that the buffer surfaces of traditional automobiles cannot make close contact.

[0004] To solve the above-mentioned technical problems, this application adopts the following technical solution:

[0005] A first aspect of this application provides a buffer device for the tailgate of a passenger vehicle, comprising: a main housing fixed to the surface of a body panel of the passenger vehicle, wherein a first buffer block is provided on the side of the main housing away from the body panel, and the first buffer block has a first inclined surface based on the vertical plane of the body panel; a fixing plate fixed to the tailgate panel of the passenger vehicle, wherein a second buffer block is provided on the fixing plate, and the second buffer block has a second inclined surface based on the vertical plane of the tailgate panel, the second inclined surface being disposed opposite to the first inclined surface; and a lifting assembly disposed within the main housing, wherein the lifting assembly is connected to the first buffer block, and the position of the first buffer assembly is adjusted by the lifting assembly to ensure that the first buffer block and the second buffer block remain in contact when the vehicle door is closed.

[0006] In some embodiments, the main housing further includes: a waterproof cover plate, fixed to the upper end of the main housing, for preventing water and dust from entering the main housing; and a mounting plate, disposed between the waterproof cover plate and the main housing.

[0007] In some embodiments, the lifting assembly includes: a first turntable rotatably mounted on the mounting plate, the first turntable having a rotation hole at its upper end; a drive gear fixed to the lower end of the first turntable; a screw rotatably disposed within the main housing, the upper end of the screw having a driven gear meshing with the drive gear; and a first slider movably meshing with the threads on the screw, the first slider being driven to move on the screw by the rotation of the screw, the first slider being fixedly connected to the first buffer block.

[0008] In some embodiments, the screw has two members, and the driven gears on the two screws mesh with the two ends of the drive gear, respectively, and the threads on the two screws have opposite directions of rotation.

[0009] In some embodiments, the waterproof cover plate is provided with: a buckle hinged to both ends of the waterproof cover plate, and a first sliding groove is opened at both ends of the main housing, wherein a locking block that cooperates with the buckle is provided in the first sliding groove; a first spring disposed between the buckle and the waterproof cover plate, the first spring being used to provide a clamping force to the buckle toward the locking block; and a sealing strip disposed between the mounting plate and the waterproof cover plate.

[0010] In some embodiments, the mounting plate is provided with an anti-loosening component to prevent the first turntable from becoming loose.

[0011] In some embodiments, the anti-loosening component includes: a second slide groove disposed on a mounting plate; a sliding frame disposed within the second slide groove, one end of the sliding frame having a limiting rod, the sliding frame being slidable to a side close to the first turntable and connected to a limiting groove on the outer side of the first turntable via the limiting rod, a push rod fixed to the other side of the sliding frame, the push rod being connected to the inner wall of the second slide groove via a second spring; a second turntable rotatably disposed within the sliding frame, the second turntable having a rotation hole; a lever fixed to the outer wall of the second turntable, the lever causing the sliding frame to slide within the second slide groove when the second turntable rotates; a limiting block disposed on the inner wall of the sliding frame, the limiting block being used to limit the rotation range of the lever; and a limiting cover plate installed on the second slide groove.

[0012] In some embodiments, a rubber buffer pad is provided between the fixing plate and the second buffer block.

[0013] In some embodiments, the second buffer block is provided with a second slider at its upper end, and the fixed plate is provided with a third sliding groove, and the second buffer block is slidably connected to the third sliding groove through the second slider.

[0014] A second aspect of this application provides a passenger vehicle equipped with the aforementioned buffer device.

[0015] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0016] This application discloses a buffer device for the tailgate of a passenger vehicle. Through the interaction of a first inclined surface and a second inclined surface between a first buffer block and a second buffer block, the downward pressure is converted into a lateral force in the direction of the second buffer block, thereby achieving the purpose of buffering when the tailgate is closed. By adjusting the height of the first buffer block through a lifting assembly, the gap between the body panel and the tailgate panel can be adjusted, so that the first buffer block and the second buffer block can always be in contact during use, providing sufficient buffering when the tailgate is closed.

[0017] A passenger vehicle disclosed in this application is equipped with a tailgate buffer device. Through the interaction of the first and second inclined surfaces between the first and second buffer blocks, the downward pressure is converted into a lateral force in the direction of the second buffer block, thereby achieving the purpose of buffering when the tailgate is closed. By adjusting the height of the first buffer block through the lifting assembly, the gap between the body panel and the tailgate panel can be adjusted so that the first and second buffer blocks can always be in contact during use, providing sufficient buffering when the tailgate is closed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the 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.

[0019] Figure 1 This is a schematic diagram of the structure of a buffer device for the tailgate of a passenger vehicle according to an embodiment.

[0020] Figure 2 This is a partial structural schematic diagram of a body panel of a rear door buffer device for a passenger vehicle according to an embodiment.

[0021] Figure 3 This is a schematic diagram of the top structure of the main housing of a buffer device for the tailgate of a passenger vehicle according to an embodiment.

[0022] Figure 4 This is a schematic diagram showing the installation of the first spring of the buffer device for the tailgate of a passenger vehicle according to an embodiment.

[0023] Figure 5 This is one of the schematic diagrams of the internal structure of the main housing of a buffer device for the tailgate of a passenger vehicle according to an embodiment;

[0024] Figure 6This is a second schematic diagram of the internal structure of the main housing of a buffer device for the tailgate of a passenger vehicle according to an embodiment;

[0025] Figure 7 This is a schematic diagram of the structure of a release assembly of a buffer device for the tailgate of a passenger vehicle according to an embodiment;

[0026] Figure 8 This is a partial structural schematic diagram of the tailgate cover of a reargate buffer device according to an embodiment of a passenger vehicle.

[0027] Figure 9 This is a schematic diagram showing the installation of a rubber buffer pad of a buffer device for the tailgate of a passenger vehicle according to an embodiment.

[0028] The reference numerals in the attached drawings are explained as follows: 1. Main housing; 2. Fixing plate; 3. Body panel; 4. Tail door panel; 5. Dust cover; 6. First buffer block; 7. Second slider; 8. Mounting plate; 9. First slide groove; 10. Locking block; 11. Buckle; 12. Third slide groove; 13. First spring; 14. Sealing ring; 15. Locking hole; 16. First slider; 17. Screw; 18. Clearance hole; 19. Driven gear; 20. Drive gear; 21. First turntable; 22. Limiting cover; 23. Second turntable; 24. Second slide groove; 25. Push rod; 26. Second spring; 27. Sliding frame; 28. Toggle lever; 29. ​​Limiting block; 30. Limiting rod; 31. Limiting groove; 32. Second buffer block; 33. Rubber buffer pad. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0030] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0031] The terms "first," "second," and "third" 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. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "multiple" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connection," "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Please see Figures 1-2 .

[0034] Figure 1 This is a schematic diagram of the structure of a buffer device for the tailgate of a passenger vehicle according to an embodiment of this application. Figure 2 This is a schematic diagram of the structure of a body cover component of a passenger vehicle's tailgate buffer device according to an embodiment of this application. As shown in the figure, the device includes: a main housing 1, fixed to the surface of a passenger vehicle's body cover 3, with a first buffer block 6 on the side of the main housing 1 away from the body cover 3, the first buffer block 6 having a first inclined surface based on the vertical plane of the body cover; a fixing plate 2, fixed to the tailgate cover 4 of the passenger vehicle, with a second buffer block 32 on the fixing plate 2, the second buffer block 32 having a second inclined surface based on the vertical plane of the tailgate cover, the second inclined surface facing the first inclined surface; and a lifting assembly, disposed within the main housing 1, the lifting assembly being connected to the first buffer block 6, the position of the first buffer assembly being adjusted by the lifting assembly to ensure that the first buffer block 6 and the second buffer block 32 remain in contact when the vehicle door is closed. Through the interaction between the first and second inclined surfaces between the first buffer block 6 and the second buffer block 32, the downward pressure is converted into a lateral force in the direction of the second buffer block 32, thereby achieving the purpose of buffering when closing the tailgate. By adjusting the height of the first buffer block 6 through the lifting assembly, the gap between the body panel 3 and the tailgate panel 4 can be adjusted so that the first buffer block 6 and the second buffer block 32 can always be in contact during use, providing sufficient buffering when the tailgate is closed.

[0035] Please see Figure 3 .

[0036] In this embodiment, the main housing 1 further includes: a waterproof cover plate, fixed to the upper end of the main housing 1, for preventing water and dust from entering the main housing 1; and a mounting plate 8, disposed between the waterproof cover plate and the main housing 1.

[0037] Please see Figure 3 and Figure 4 .

[0038] In this embodiment, the waterproof cover plate is provided with: a buckle 11, hinged to both ends of the waterproof cover plate; a first sliding groove 9 is opened at both ends of the main housing 1, and a locking block 10 that cooperates with the buckle 11 is provided in the first sliding groove 9; a first spring 13 is disposed between the buckle 11 and the waterproof cover plate, and the first spring 13 is used to provide a clamping force on the buckle 11 toward the locking block 10; and a sealing strip 14 is disposed between the mounting plate 8 and the waterproof cover plate.

[0039] In the specific implementation of this embodiment, the buckle 11 is provided with a buckle hole 15. The buckle 11 is slid inside the first sliding groove 9, and the dust cover 5 is pressed down, causing the buckle 11 to move downward. Finally, it is engaged inside the buckle hole 15 by the buckle block 10, thereby fixing the dust cover 5 to the top of the shell and achieving the purpose of dust prevention. When the dust cover 5 is pressed down, the dust cover 5 contacts the sealing strip 14, compressing the sealing strip 14 and sealing the sealing strip 14 with the shell, thereby achieving the purpose of waterproofing.

[0040] Please see Figure 5 and Figure 6 .

[0041] In this embodiment, the lifting assembly includes: a first turntable 21, rotatably mounted on the mounting plate 8, the upper end of the first turntable 21 having a rotating hole, the rotating hole being an internal hexagon countersunk hole; a drive gear 20, fixed to the lower end of the first turntable 21; a screw 17, rotatably disposed within the main housing 1, the upper end of the screw 17 having a driven gear 19 meshing with the drive gear; and a first slider 16, movably meshing with the thread on the screw 17, the first slider 16 being driven to move on the screw 17 by the rotation of the screw 17, the first slider 16 being fixedly connected to the first buffer block 6.

[0042] In the specific implementation of this embodiment, the first slider 16 is a T-shaped slider, and the first slider 16 is provided with a clearance hole 18. The clearance hole 18 allows the first slider 16 to avoid the fixing bolt when it moves up and down.

[0043] In this embodiment, there are two screws 17, and the driven gears 19 on the two screws 17 mesh with the two ends of the drive gear 20 respectively. The threads on the two screws 17 have opposite directions. The double screw design can make the lifting transmission more stable.

[0044] In the specific implementation of this embodiment, when the drive gear 20 rotates, it drives the driven gear 19 to rotate. The driven gear 19 drives the screw 17 to rotate. The rotation of the screw 17 drives the first slider 16 to move up and down inside the main housing 1, thereby driving the first buffer block 6 to move up and down.

[0045] Please see Figure 3 and Figure 7 ;

[0046] In this embodiment, the mounting plate 8 is provided with an anti-loosening component, which is used to prevent the first turntable 21 from becoming loose.

[0047] In this embodiment, the first turntable 21 is provided with a plurality of limiting grooves 31 in the circumferential direction.

[0048] In this embodiment, the anti-loosening component includes: a second slide groove 24, disposed on the mounting plate 8; a sliding frame 27, disposed within the second slide groove 24, one end of the sliding frame 27 having a limiting rod 30, the sliding frame 27 being slidable to the side near the first turntable 21, and connected to the limiting groove 31 on the outer side of the first turntable 21 via the limiting rod 30; a push rod 25 fixed to the other side of the sliding frame 27, the push rod 25 being connected to the inner wall of the second slide groove 24 via a second spring 26; and a second turntable 23, rotatably disposed with the sliding groove 24. Inside frame 27, the second turntable 23 is provided with a rotating hole, which is a countersunk hexagonal socket hole; a lever 28 is fixed on the outer wall of the second turntable 23. When the second turntable 23 rotates, the lever 28 drives the sliding frame 27 to slide in the second slide groove 24; a limiting block 29 is provided on the inner wall of the sliding frame 27. The limiting block 29 is used to limit the rotation range of the lever 28; a limiting cover plate 22 is installed on the second slide groove 24. The limiting cover plate 22 is used to limit the anti-loosening component below and also to isolate the inside of the second slide groove 24 from the outside.

[0049] In the specific implementation of this embodiment, a tool is inserted into the rotating hole inside the second turntable 23, and the second turntable 23 is rotated counterclockwise to make the lever 28 reach the desired position. Figure 7 At the aforementioned position, the second spring 26 applies an elastic force to the push rod 25, and the sliding frame 27 drives the limiting rod 30 to be locked inside the limiting groove 31, preventing the first turntable 21 from rotating, thereby achieving the purpose of preventing loosening.

[0050] Please see Figure 8 and Figure 9 .

[0051] In this embodiment, a rubber buffer pad 33 is provided between the fixing plate 2 and the second buffer block 32. The rubber buffer pad 33, the fixing plate 2, and the tailgate cover 4 are fixedly connected by countersunk bolts. The top of the fixing plate 2 and the tailgate cover 4 are connected by countersunk bolts, which can effectively prevent the fixing plate 2 and the tailgate cover 4 from shaking and generating noise due to vibration during driving, thus avoiding affecting the driving comfort.

[0052] In some embodiments, the second buffer block 32 is provided with a second slider 7 at its upper end, and the fixed plate 2 is provided with a third sliding groove 12. The second buffer block 32 is slidably connected to the third sliding groove 12 via the second slider 7. This is used to counteract the upward force generated when the second buffer block 32 and the first buffer block 6 cooperate. In the specific implementation of this embodiment, through the interaction of the inclined surfaces between the first buffer block 6 and the second buffer block 32, the downward pressure is converted into a lateral force in the direction close to the rubber buffer pad 33, thereby causing the second buffer block 32 to squeeze the rubber buffer pad 33, thus achieving the purpose of buffering when closing the tailgate, avoiding direct contact between the rubber buffer pad 33 and the first buffer block 6 or the vehicle body, which would cause wear and extend the service life of the rubber buffer pad 33.

[0053] In this embodiment, the first buffer block 6 and the second buffer block 32 are made of nylon. Nylon processed parts have good comprehensive properties, including mechanical properties, heat resistance, wear resistance, chemical resistance and self-lubrication, and have a low coefficient of friction.

[0054] A second aspect of this embodiment provides a passenger vehicle equipped with the aforementioned buffer device.

[0055] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0056] This application discloses a buffer device for the tailgate of a passenger vehicle. Through the interaction of a first inclined surface and a second inclined surface between a first buffer block and a second buffer block, the downward pressure is converted into a lateral force in the direction of the second buffer block, thereby achieving the purpose of buffering when the tailgate is closed. By adjusting the height of the first buffer block through a lifting assembly, the gap between the body panel and the tailgate panel can be adjusted, so that the first buffer block and the second buffer block can always be in contact during use, providing sufficient buffering when the tailgate is closed.

[0057] A passenger vehicle disclosed in this application is equipped with a tailgate buffer device. Through the interaction of the first and second inclined surfaces between the first and second buffer blocks, the downward pressure is converted into a lateral force in the direction of the second buffer block, thereby achieving the purpose of buffering when the tailgate is closed. By adjusting the height of the first buffer block through the lifting assembly, the gap between the body panel and the tailgate panel can be adjusted so that the first and second buffer blocks can always be in contact during use, providing sufficient buffering when the tailgate is closed.

[0058] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A buffer device for the tailgate of a passenger vehicle, characterized in that, include: The main housing is fixed to the surface of the body panel of the passenger vehicle. A first buffer block is provided on the side of the main housing away from the body panel. The first buffer block is provided with a first inclined surface based on the vertical plane of the body panel. A fixing plate is fixed to the tailgate cover of a passenger vehicle. A second buffer block is provided on the fixing plate. The second buffer block is provided with a second inclined surface based on the vertical plane of the tailgate cover. The second inclined surface is arranged facing the first inclined surface. A lifting assembly is disposed within the main housing. The lifting assembly is connected to the first buffer block. The position of the first buffer assembly is adjusted by the lifting assembly to ensure that the first buffer block and the second buffer block remain in contact when the door is closed. The main housing also includes: A waterproof cover plate is fixed to the upper end of the main housing to prevent water from entering and dust from accumulating inside the main housing; An mounting plate is disposed between the waterproof cover and the main housing; The lifting assembly includes: The first turntable is rotatably mounted on the mounting plate, and the upper end of the first turntable is provided with a rotation hole; The drive gear is fixed to the lower end of the first turntable; A screw is rotatably disposed within the main housing, and a driven gear that meshes with the drive gear is disposed at the upper end of the screw; The first slider is movably engaged with the thread on the screw. The first slider is driven to move on the screw by the rotation of the screw. The first slider is fixedly connected to the first buffer block. The screw has two parts, and the driven gears on the two screws mesh with the two ends of the drive gear respectively. The threads on the two screws have opposite directions of rotation.

2. The buffer device for the tailgate of a passenger vehicle according to claim 1, characterized in that, The waterproof cover is provided with: The buckle is hinged to both ends of the waterproof cover plate. The main housing has a first sliding groove at both ends, and a locking block that cooperates with the buckle is provided in the first sliding groove. A first spring is disposed between the buckle and the waterproof cover plate, and the first spring is used to provide a clamping force to the buckle toward the buckle block; A sealing strip is disposed between the mounting plate and the waterproof cover plate.

3. The buffer device for the tailgate of a passenger vehicle according to claim 1, characterized in that, The mounting plate is provided with an anti-loosening component, which is used to prevent the first turntable from becoming loose.

4. A buffer device for the tailgate of a passenger vehicle according to claim 3, characterized in that, The anti-loosening component includes: The second groove is provided on the mounting plate; A sliding frame is provided in the second sliding groove. One end of the sliding frame is provided with a limiting rod. The sliding frame can slide to the side close to the first turntable and is connected to the limiting groove on the outside of the first turntable through the limiting rod. A push rod is fixed on the other side of the sliding frame. The push rod is connected to the inner wall of the second sliding groove through a second spring. The second turntable is rotatably disposed within the sliding frame, and the second turntable is provided with a rotation hole; The lever is fixed to the outer wall of the second turntable. When the second turntable rotates, the lever drives the sliding frame to slide in the second slide groove. A limiting block is disposed on the inner wall of the sliding frame, and the limiting block is used to limit the rotation range of the lever; A limiting cover plate is installed on the second slide groove.

5. A buffer device for a passenger vehicle tailgate according to claim 1, characterized in that, A rubber buffer pad is provided between the fixing plate and the second buffer block.

6. A buffer device for a passenger vehicle tailgate according to claim 1, characterized in that, The second buffer block is provided with a second slider at its upper end, and the fixed plate is provided with a third sliding groove. The second buffer block is slidably connected to the third sliding groove through the second slider.

7. A passenger vehicle, characterized in that, The passenger vehicle is equipped with a buffer device as described in any one of claims 1 to 6.

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