Damping structure of back door and vehicle

Abstract

The utility model relates to vehicle technical field discloses a shock attenuation structure and carrier of back door, this back door is located on the rear wall outer plate of carrier, and the outside of rear wall outer plate is equipped with rear bumper, and the shock attenuation structure of back door includes: first buffer block is set up in the inner plate of back door, and first buffer block and the first side of rear bumper abut; Second buffer block is set up on the rear wall outer plate, and second buffer block and the second side of rear bumper abut.The utility model provides a shock attenuation structure of back door, increases second buffer block, and second buffer block contacts with rear bumper, utilizes the elastic deformation of second buffer block, can reduce the matching accuracy of rear bumper and rear wall outer plate, avoids the abnormal sound problem caused by not close tightly, and the interference problem caused by too close tightly, prevents the friction scratch from happening, reduces the risk of paint corrosion, improves the installation reliability, and the deformation energy absorption characteristic of second buffer block can also improve the ear sound, improves the quality of back door opening and closing.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, specifically to a shock-absorbing structure for a tailgate and a vehicle. Background Technology

[0002] In related technologies, the tailgate of a car is located on the outer panel of the rear bulkhead and is generally a lift-up tailgate. Due to the large weight and volume of the tailgate, certain cushioning measures must be adopted to reduce the vibration generated when the tailgate is closed.

[0003] Currently, the lower shock absorption structure of the tailgate includes a buffer block installed on the inner panel of the tailgate. The buffer block can effectively prevent high-frequency vibrations generated when the tailgate is closed. Specifically, a rear bumper is provided on the outer side of the rear outer panel, and the buffer block fixed to the inner panel of the tailgate presses against the rear bumper, which in turn presses against the outer panel of the rear outer panel.

[0004] However, if the mating surfaces of the rear bumper and the rear outer panel do not fit well in the lower buffer area of ​​the tailgate, abnormal noises are likely to occur during driving, especially on bumpy roads. If the mating surfaces of the rear bumper and the rear outer panel fit well, there will be interference between them. Especially on twisting roads, the rear bumper and the rear outer panel are prone to scratches, increasing the risk of paint scratches and rust. Utility Model Content

[0005] This utility model provides a shock-absorbing structure and carrier for a tailgate, in order to solve or improve the problem in the related technology that if the mating surfaces of the rear bumper and the rear outer panel are poorly fitted in the lower buffer block area of ​​the tailgate, abnormal noise is likely to occur. If the mating surfaces of the rear bumper and the rear outer panel are well fitted, there will be interference between the two, which is likely to cause scratches and increase the risk of paint scratches and rust.

[0006] In a first aspect, this utility model provides a shock-absorbing structure for a tailgate, wherein the tailgate is located on the outer rear panel of a vehicle, and a rear bumper is provided on the outer side of the outer rear panel, comprising:

[0007] The first buffer block is disposed on the inner panel of the tailgate, and the first buffer block abuts against the first side of the rear bumper;

[0008] The second buffer block is disposed on the outer panel of the rear bumper, and the second buffer block abuts against the second side of the rear bumper.

[0009] In one optional embodiment, a buffer block bracket is provided on the side of the rear outer panel facing the rear bumper, the second buffer block is disposed on the buffer block bracket, and the second buffer block abuts against the second side of the rear bumper.

[0010] In one optional embodiment, the second buffer block has a snap-fit ​​portion at one end facing the buffer block bracket, and the buffer block bracket has a first mounting hole adapted to the snap-fit ​​portion, with the snap-fit ​​portion snapping into the first mounting hole.

[0011] In one optional embodiment, the outer wall of the snap-fit ​​part is provided with an annular groove, the snap-fit ​​part snaps into the first mounting hole, and the buffer block bracket is embedded in the annular groove.

[0012] In one alternative embodiment, the second buffer block has a protrusion at one end facing the rear bumper, and the protrusion abuts against the second side of the rear bumper;

[0013] And / or, the second buffer block has a blind hole at one end facing the rear bumper.

[0014] In one optional embodiment, the outer wall of the second buffer block is provided with a plurality of annular flanges, the plurality of annular flanges being spaced apart along the axial direction of the second buffer block, and the thickness of the plurality of annular flanges gradually increasing in the direction away from the rear bumper.

[0015] In one alternative implementation, the spacing between two adjacent annular flanges gradually increases along the direction away from the rear bumper.

[0016] In one alternative implementation, the stiffness of the second buffer block is less than the stiffness of the first buffer block;

[0017] And / or, the outer diameter of the second buffer block is smaller than the outer diameter of the first buffer block.

[0018] In one alternative embodiment, the rear bumper is provided with a recess that matches the first buffer block, and the first buffer block abuts against the recess.

[0019] And / or, the first buffer block is provided with a spiral groove, and the inner panel of the back door is provided with a second mounting hole adapted to the first buffer block. The first buffer block passes through the second mounting hole and is snapped onto the inner panel of the back door through the spiral groove.

[0020] Secondly, this utility model also provides a carrier, including a shock-absorbing structure for the back door as described in any of the above claims.

[0021] The shock-absorbing structure for the tailgate provided by this utility model adds a second buffer block. The second buffer block contacts the rear bumper. By utilizing the elastic deformation of the second buffer block, the matching precision between the rear bumper and the rear outer panel can be reduced, avoiding abnormal noise caused by loose fitting and interference caused by overly tight fitting. It also prevents friction and scratching between the rear bumper and the rear outer panel, reduces the risk of paint scratches and rust, and improves installation reliability. At the same time, the deformation energy absorption characteristics of the second buffer block can also improve the sound pressure and enhance the opening and closing quality of the tailgate. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a perspective view of the shock-absorbing structure of the back door according to an embodiment of the present utility model;

[0024] Figure 2 This is a cross-sectional view of the shock-absorbing structure of the back door according to an embodiment of the present utility model;

[0025] Figure 3 for Figure 2 A magnified view of a portion of point A in the middle;

[0026] Figure 4 for Figure 3 A magnified view of the area behind the hidden buffer block;

[0027] Figure 5 This is a schematic diagram of the structure of the second buffer block in an embodiment of the present invention;

[0028] Figure 6 This is a partially enlarged schematic diagram of the second mounting hole in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. First buffer block; 101. Spiral groove; 2. Second buffer block; 201. Snap-fit ​​part; 202. Annular snap-fit ​​groove; 203. Protrusion; 204. Blind hole; 205. Annular flange; 3. Tail door; 301. Inner panel; 3011. Second mounting hole; 3012. Spiral surface; 4. Rear bumper; 401. First side; 402. Second side; 403. Recessed part; 5. Rear outer panel; 6. Buffer block bracket; 601. First mounting hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this application, 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," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this application. 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 indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" 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, 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. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] The following is combined with Figures 1 to 6 This describes the shock-absorbing structure and carrier of the back door according to an embodiment of the present utility model.

[0036] According to an embodiment of this utility model, in one aspect, a shock-absorbing structure for a tailgate is provided. The tailgate 3 is located on the rear outer panel 5 of the vehicle, and a rear bumper 4 is provided on the outer side of the rear outer panel 5. Specifically, as... Figure 1 As shown, the shock absorption structure of the tailgate includes a first buffer block 1 and a second buffer block 2. Figure 2 As shown, the first buffer block 1 is disposed on the inner panel 301 of the rear door 3, as... Figure 3 As shown, the first buffer block 1 abuts against the first side 401 of the rear bumper 4. Figure 1 As shown, the second buffer block 2 is disposed on the rear outer panel 5, as... Figure 3 As shown, the second buffer block 2 abuts against the second side 402 of the rear bumper 4.

[0037] This configuration adds a second buffer block 2, which contacts the rear bumper 4. By utilizing the elastic deformation of the second buffer block 2, the matching precision between the rear bumper 4 and the rear outer panel 5 can be reduced, avoiding abnormal noise caused by loose fit and interference caused by overly tight fit. It also prevents the rear bumper 4 and the rear outer panel 5 from directly contacting each other and rubbing against each other, reducing the risk of paint scratches and rust, and improving the reliability of installation. At the same time, by utilizing the deformation energy absorption characteristics of the second buffer block 2, the shock absorption effect of the tailgate 3 can be further improved, the ear-pressing noise can be reduced, and the opening and closing quality of the tailgate 3 can be improved.

[0038] Optionally, in some embodiments of this utility model, such as Figure 2 As shown, a buffer block bracket 6 is provided on the side of the rear outer panel 5 facing the rear bumper 4. Optionally, the buffer block bracket 6 is welded to the rear outer panel 5 to ensure the stability of the connection. The second buffer block 2 is disposed on the buffer block bracket 6, and the second buffer block 2 abuts against the second side 402 of the rear bumper 4. In this way, by providing the buffer block bracket 6, the installation of the second buffer block 2 is facilitated, and the processing and forming process of the rear outer panel 5 is simplified, thus achieving the dual advantages of convenient installation and efficient processing.

[0039] Optionally, in some embodiments of this utility model, such as Figure 3 As shown, the second buffer block 2 has a snap-fit ​​part 201 at one end facing the buffer block support 6, such as... Figure 4As shown, the buffer block bracket 6 is provided with a first mounting hole 601 that matches the snap-fit ​​part 201, and the snap-fit ​​part 201 snaps into the first mounting hole 601. With this configuration, the snap-fit ​​structure does not require bolts, screws or other fasteners, and can be fixed by mechanical snap-fit, which greatly shortens the assembly time, reduces the labor cost of the production line, improves the assembly efficiency and maintenance convenience, and the snap-fit ​​structure occupies little space, which is conducive to the compact layout of the second buffer block 2 and the buffer block bracket 6, and is suitable for narrow installation environments.

[0040] Optionally, in some embodiments of this utility model, such as Figure 5 As shown, the outer wall of the snap-fit ​​part 201 is provided with an annular snap-fit ​​groove 202, such as Figure 3 As shown, the snap-fit ​​part 201 snaps into the first mounting hole 601, and the buffer block bracket 6 is embedded in the annular slot 202. This arrangement, with the annular slot 202 and the buffer block bracket 6 engaging, forms a dual constraint in both the axial and radial directions, effectively resisting displacement or dislodgement of the second buffer block 2 due to vibration, ensuring the second buffer block 2 is securely mounted on the buffer block bracket 6, and improving installation reliability. Optionally, the snap-fit ​​part 201 adopts an arc-shaped design, which facilitates smooth insertion of the snap-fit ​​part 201 into the first mounting hole 601.

[0041] Optionally, in some embodiments of this utility model, such as Figure 3 and Figure 5 As shown, the second buffer block 2 has a protrusion 203 at one end facing the rear bumper 4, and the protrusion 203 abuts against the second side 402 of the rear bumper 4. This design, by including the protrusion 203, allows for a certain amount of deformation allowance for the rear bumper 4, effectively avoiding installation and matching problems caused by deformation of the rear bumper 4 due to temperature changes, thus ensuring that it is less prone to abnormal noise. It should be noted that the protrusion height of the protrusion 203 can be specifically designed according to the amount of deformation interference of the rear bumper 4. Optionally, the protrusion 203 is an arc-shaped protrusion, located at the center of the second buffer block 2, to ensure a smooth transition when it contacts the rear bumper 4.

[0042] Optionally, in some embodiments of this utility model, such as Figure 3 As shown, the second buffer block 2 has a blind hole 204 at one end facing the rear bumper 4. This design, with the blind hole 204, facilitates the compression deformation of the second buffer block 2 under stress, thereby meeting the matching installation requirements of the second buffer block 2 and the rear bumper 4, ensuring they are matched with each other according to a certain interference amount. Optionally, the blind hole 204 is located at the center of the second buffer block 2, which helps to ensure balanced circumferential stress and consistent deformation of the second buffer block 2, effectively improving its stability and adaptability.

[0043] Optionally, in some embodiments of this utility model, such as Figure 5 As shown, the outer wall of the second buffer block 2 is provided with multiple annular flanges 205, which are spaced apart along the axial direction of the second buffer block 2. It should be noted that the number of annular flanges 205 can be specifically designed according to actual design requirements. Furthermore, as... Figure 3 As shown, the thickness of the multiple annular flanges 205 gradually increases along the direction away from the rear bumper 4. Specifically, the multiple annular flanges 205 can be designed to gradually increase in thickness proportionally or unequally along the direction away from the rear bumper 4.

[0044] With this design, the multiple annular flanges 205 adopt unequal thicknesses to achieve a non-uniform deformation effect. On the side of the second buffer block 2 facing the rear bumper 4, its thickness is relatively small, making it easier to deform. This not only improves the buffering and shock absorption effect but also better adapts to the deformation interference of the rear bumper 4. On the side of the second buffer block 2 away from the rear bumper 4, its thickness is relatively large, making it less prone to deformation. This ensures the structural stability of the second buffer block 2 and achieves a stable and reliable connection between the second buffer block 2 and the buffer block bracket 6.

[0045] Optionally, in some embodiments of this utility model, such as Figure 3 and Figure 5 As shown, the distance between two adjacent annular flanges 205 gradually increases along the direction away from the rear bumper 4. It can be understood that the distance between two adjacent annular flanges 205 can be designed to gradually increase proportionally or unequally. It should be noted that the variation in the distance between the annular flanges 205 can be specifically designed according to different actual vehicle matching effects.

[0046] With this design, the multiple annular flanges 205 are spaced at unequal intervals to achieve a non-uniform deformation effect. On the side of the second buffer block 2 facing the rear bumper 4, the spacing is relatively small, which is conducive to the annular flanges 205 pressing against each other layer by layer to generate deformation when under force. This can not only improve the buffering and shock absorption performance, but also better adapt to the deformation interference of the rear bumper 4. On the side of the second buffer block 2 away from the rear bumper 4, the spacing is relatively large, which makes it less prone to deformation. This ensures the structural performance of the second buffer block 2 and ensures that the connection between the second buffer block 2 and the buffer block bracket 6 is more stable and reliable.

[0047] Optionally, in some embodiments of this utility model, the stiffness of the second buffer block 2 is less than that of the first buffer block 1. With this configuration, the first buffer block 1 has relatively high stiffness, providing a greater reaction force under road conditions such as bumpy surfaces, effectively suppressing the outward movement of the tailgate 3. The second buffer block 2, with relatively low stiffness, is more prone to deformation, which helps to achieve buffering and energy absorption when the tailgate 3 has a tendency to move inward, thus improving the closing quality of the tailgate 3. It should be noted that the outward movement tendency refers to the tendency to move in the direction of opening the tailgate 3, while the inward movement tendency refers to the tendency to move in the direction of closing the tailgate 3.

[0048] Optionally, in some embodiments of this utility model, such as Figure 3 As shown, the outer diameter d of the second buffer block 2 is smaller than the outer diameter D of the first buffer block 1. With this configuration, the second buffer block 2 is more prone to deformation than the first buffer block 1, meeting the usage requirements in different scenarios, and also reducing the design size of the buffer block bracket 6, saving installation space.

[0049] Optionally, in some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the rear bumper 4 has a recess 403 that matches the first buffer block 1, and the first buffer block 1 abuts against the recess 403. This limits the first buffer block 1, ensuring that it is always stably in the preset working position, which helps improve the closing quality of the tailgate 3, and enables rapid positioning, thus improving assembly efficiency.

[0050] Optionally, in some embodiments of this utility model, such as Figure 3 As shown, the first buffer block 1 is provided with a spiral groove 101, such as Figure 4 As shown, the inner panel 301 of the tailgate 3 is provided with a second mounting hole 3011 that matches the first buffer block 1. The first buffer block 1 passes through the second mounting hole 3011 and is engaged with the inner panel 301 by a spiral groove 101. It should be noted that, as... Figure 3 and Figure 6 As shown, the contact surface on the inner panel 301 that abuts against the spiral groove 101 is a spiral surface 3012. This spiral surface 3012 can be designed according to the specific structure of the spiral groove 101 so that when the first buffer block 1 is fixed on the inner panel 301, the end face of the first buffer block 1 remains flush with the surface of the rear bumper 4, ensuring that the two fit tightly together. With this setting, by rotating the first buffer block 1, the height of the first buffer block 1 extending out of the inner panel 301 can be adjusted, thereby achieving different ballast loads on the second buffer block 2. In this way, the opening and closing quality of the tailgate 3 can be adjusted to the optimal state according to different actual vehicle matching effects.

[0051] According to an embodiment of the present invention, another aspect provides a vehicle including a shock-absorbing structure for the tailgate as described in the various embodiments above. Optionally, the vehicle is a vehicle, a low-altitude aircraft, etc. The derivation process of this beneficial effect is roughly similar to the derivation process of the beneficial effect of the shock-absorbing structure for the tailgate described above, and therefore will not be repeated here.

[0052] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A shock-absorbing structure for a tailgate, wherein the tailgate (3) is located on the rear outer panel (5) of a vehicle, and a rear bumper (4) is provided on the outer side of the rear outer panel (5), characterized in that, include: The first buffer block (1) is disposed on the inner panel (301) of the tailgate (3), and the first buffer block (1) abuts against the first side (401) of the rear bumper (4); The second buffer block (2) is disposed on the rear outer panel (5), and the second buffer block (2) abuts against the second side (402) of the rear bumper (4).

2. The shock-absorbing structure for the back door according to claim 1, characterized in that, The rear outer panel (5) is provided with a buffer block bracket (6) on the side facing the rear bumper (4), and the second buffer block (2) is provided on the buffer block bracket (6), and the second buffer block (2) abuts against the second side (402) of the rear bumper (4).

3. The shock-absorbing structure for the back door according to claim 2, characterized in that, The second buffer block (2) has a snap-fit ​​part (201) at one end facing the buffer block bracket (6), and the buffer block bracket (6) has a first mounting hole (601) that is adapted to the snap-fit ​​part (201), and the snap-fit ​​part (201) is snapped into the first mounting hole (601).

4. The shock-absorbing structure for the back door according to claim 3, characterized in that, The outer wall of the snap-fit ​​part (201) is provided with an annular snap-fit ​​groove (202), the snap-fit ​​part (201) is snapped into the first mounting hole (601), and the buffer block bracket (6) is embedded in the annular snap-fit ​​groove (202).

5. The shock-absorbing structure for the back door according to any one of claims 1 to 4, characterized in that, The second buffer block (2) has a protrusion (203) at one end facing the rear bumper (4), and the protrusion (203) abuts against the second side (402) of the rear bumper (4); And / or, the second buffer block (2) has a blind hole (204) at one end facing the rear bumper (4).

6. The shock-absorbing structure of the back door according to any one of claims 1 to 4, characterized in that, The outer wall of the second buffer block (2) is provided with a plurality of annular flanges (205). The plurality of annular flanges (205) are spaced apart along the axial direction of the second buffer block (2), and the thickness of the plurality of annular flanges (205) gradually increases along the direction away from the rear bumper (4).

7. The shock-absorbing structure for the back door according to claim 6, characterized in that, Along the direction away from the rear bumper (4), the distance between two adjacent annular flanges (205) gradually increases.

8. The shock-absorbing structure of the back door according to any one of claims 1 to 4, characterized in that, The stiffness of the second buffer block (2) is less than that of the first buffer block (1); And / or, the outer diameter of the second buffer block (2) is smaller than the outer diameter of the first buffer block (1).

9. The shock-absorbing structure for the rear door according to any one of claims 1 to 4, characterized in that, The rear bumper (4) is provided with a recess (403) that is adapted to the first buffer block (1), and the first buffer block (1) abuts against the recess (403); And / or, the first buffer block (1) is provided with a spiral groove (101), and the inner plate (301) of the back door (3) is provided with a second mounting hole (3011) adapted to the first buffer block (1). The first buffer block (1) passes through the second mounting hole (3011) and is snapped onto the inner plate (301) of the back door (3) through the spiral groove (101).

10. A vehicle, characterized in that, The shock-absorbing structure includes the back door (3) as described in any one of claims 1 to 9.

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