A car tailgate structure and a car

Abstract

This invention discloses a car tailgate structure and a car, belonging to the field of automotive technology, including an outer panel structure and an inner panel structure connected to each other; the inner panel structure includes an inner panel, a window frame is provided in the upper middle part of the inner panel, a V-shaped main rib is provided between the bottom of the window frame and the lock installation area of ​​the inner panel, the V-shaped main rib crosses the recessed position of the taillight box, a crossbeam is arranged in the middle of the V-shaped main rib, and the two ends of the crossbeam are fixedly connected to the V-shaped main rib.

Description

Technical Field

[0001] This invention belongs to the field of automotive technology, specifically relating to a tailgate structure and an automobile. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] The tailgate is a major component of a car body. As the primary opening and closing system, it not only fulfills functional requirements such as storing items and serving as an escape route, but also needs to meet requirements for durability, NVH (noise, vibration, and harshness), and aesthetics. With the development of the automotive industry and the increasing functional demands, especially with the trend of continuous taillights, tailgate design has become increasingly challenging. Designing a tailgate that satisfies the requirements of a continuous taillight design while simultaneously ensuring durability, NVH, and lightweight performance has become a major challenge in tailgate design.

[0004] Tailgate taillights are generally divided into non-through and through types. With non-through taillights, the inner and outer panel cavities are not severed by the taillight box in the middle, resulting in a more continuous vertical stiffness and easier achievement of durability and NVH performance. With through taillights, the taillight box cuts the outer panel in half, causing discontinuity in vertical stiffness and potential bending deformation at the taillight box location, significantly impacting durability and NVH performance.

[0005] For the design of a taillight-style tailgate structure, the common practice in the industry is to add a large support bracket between the inner and outer panels of the lower half of the tailgate to compensate for the structural defects at the taillight box. However, this approach results in an extra component in the tailgate, which increases development costs, weight, and manufacturing difficulty, making tailgate molding more challenging and increasing costs. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a car tailgate structure and a car. This structure has good performance and is highly lightweight. It can meet the requirements of durability, NVH and other aspects, and can greatly reduce the difficulty of manufacturing, making it easy to manufacture and facilitate mass production.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0008] In a first aspect, the present invention provides a rear door structure for an automobile, comprising an outer panel structure and an inner panel structure connected to each other; the inner panel structure includes an inner panel, a window frame is provided in the upper middle part of the inner panel, a V-shaped main rib is provided between the bottom of the window frame and the lock mounting area of ​​the inner panel, the V-shaped main rib crosses the recessed position of the taillight box, a crossbeam is arranged in the middle of the V-shaped main rib, and the two ends of the crossbeam are fixedly connected to the V-shaped main rib.

[0009] As a further technical solution, the crossbeam is provided with multiple vertical bars, which overlap from the bottom of the window frame onto the V-shaped main bar, and the multiple vertical bars are arranged in parallel and at intervals.

[0010] As a further technical solution, side beams are provided on both sides of the inner panel, and the V-shaped main reinforcement overlaps with the side beams to form an R-angle structure; the edge of the crossbeam is provided with support legs to support the outer panel structure, so that the middle part of the inner panel, the taillight box and the outer panel structure form a closed cavity structure.

[0011] As a further technical solution, the inner panel is provided with a welded corner at the corner of the window frame, and the inner panel is provided with multiple weight-reducing holes at the bottom of the window frame, with the weight-reducing holes having flanges.

[0012] As a further technical solution, a lock reinforcement plate is fixedly installed in the middle part of the bottom of the inner plate, hinge reinforcement plates are installed on both sides of the top of the inner plate, and gas spring reinforcement plates are installed on both sides of the middle part of the inner plate; a lock mounting boss is provided on the inner plate corresponding to the lock reinforcement plate, and a hinge mounting boss is provided on the inner plate at the hinge reinforcement plate. Both the lock mounting boss and the hinge mounting boss have a radius (R).

[0013] As a further technical solution, a through rib is provided in the middle of the hinge reinforcing plate, and multiple flat ribs are provided on the through rib to overlap the welding surface of the window frame. An upper flange is provided at the top of the hinge reinforcing plate, and a protruding rib is provided on the side corresponding to the upper flange.

[0014] As a further technical solution, the gas spring reinforcing plate is provided with a through rib in the middle, and multiple flanged weight reduction holes are provided on the through rib; the gas spring reinforcing plate is provided with a gas spring mounting surface, and raised ribs are provided around the gas spring mounting surface; flanges are provided on both sides of the lock reinforcing plate, the lower end of the lock reinforcing plate is connected to the sealing surface through a structural adhesive groove, and a lock mounting surface is provided in the middle of the lock reinforcing plate.

[0015] As a further technical solution, the outer panel structure includes an upper outer panel, the middle part of the bottom of the upper outer panel is fixedly connected to the lower outer panel, and taillight mounting plates are provided on both sides between the upper and lower outer panels. The taillight mounting plates are fixedly connected to the inner panel, and both the upper and lower outer panels are connected to the inner panel by flanges.

[0016] As a further technical solution, the taillight mounting plate is provided with multiple sloping protrusions, the top of the upper outer plate is provided with an upper outer plate protrusion, the upper outer plate is provided with a spoiler mounting surface corresponding to the bottom of the upper outer plate protrusion, a window frame is provided in the middle of the upper outer plate, and multiple taillight recess protrusions are provided between the middle part of the bottom of the upper outer plate and the lower outer plate.

[0017] Secondly, the present invention also provides an automobile, including the automobile tailgate structure described above.

[0018] The beneficial effects of the present invention are as follows:

[0019] The rear tailgate structure of the present invention features a V-shaped main rib on the inner panel, extending from the lock mounting area to the lower corner of the window frame. The V-shaped main rib crosses the recessed area of ​​the taillight box, and a crossbeam is arranged in the middle of the V-shaped main rib, overlapping the V-shaped main rib. The crossbeam is equipped with vertical ribs that overlap the V-shaped main ribs from the lower welded edge of the window frame. Through the cooperation of the V-shaped main rib, the crossbeam, and the vertical ribs, the problem of discontinuity in rigidity caused by the recessed area of ​​the through-type taillight box can be greatly compensated, ensuring the continuity of the rigidity force transmission path from the window frame to the side beam and the lock position, and improving the overall bending and torsional resistance of the rear tailgate.

[0020] The rear tailgate structure of the present invention has an R-angle structure with a height difference formed at the intersection of the V-shaped main rib on the inner panel and the side beam. Support legs are set from the lower end of the window frame crossbeam edge to support the lower outer panel, so that the middle part of the inner panel, the taillight box and the outer panel form a closed cavity structure, thereby improving the bending resistance of the rear tailgate at the recessed position of the taillight box.

[0021] The car tailgate structure of the present invention, by setting weight-reducing holes with flanges in the inner panel, ensures that the weight of the tailgate is greatly reduced without reducing the rigidity.

[0022] The taillight mounting plate of the present invention has slanted protrusions at the upper and lower R-angle positions, and taillight recess protrusions are provided at the recessed surfaces of the taillight boxes on the upper and lower outer plates, which can improve the bending resistance of the taillight box itself.

[0023] The rear door structure of the automobile of the present invention has a through rib in the middle of the hinge reinforcement plate to increase the cavity area of ​​the window frame corner. The lower end of the hinge mounting surface has a flat rib on the through rib that overlaps the welding surface of the window frame. The upper end flange and the side convex rib can improve the rigidity of the hinge mounting point and the bending and torsional resistance of the corner.

[0024] The rear tailgate structure of this invention features a gas spring reinforcing plate whose upper end extends across the lower radius of the window frame and whose lower end extends across the taillight box section, effectively compensating for the stiffness of the rear tailgate at the taillight box. A through-rib is provided in the middle of the gas spring reinforcing plate, and a weight-reducing hole is provided on the through-rib, which minimizes weight while ensuring the continuity of the upper and lower stiffness. Raised ribs are added around the gas spring mounting surface to improve the local stiffness and load-bearing capacity without increasing weight.

[0025] The rear door structure of the present invention has flanges on both sides of the lock reinforcement plate, and the lower end is connected to the sealing surface by structural adhesive, thereby improving the connection strength of the lock with minimal material.

[0026] The car tailgate structure of the present invention has no separate outer support plate, has a simple structure, high rigidity and strength, high degree of lightweight and high degree of versatility. It can be applied to both traditional non-through taillight tailgate structures and deep through taillight tailgate structures, and has low manufacturing and matching difficulty. Attached Figure Description

[0027] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0028] Figure 1 This is a schematic diagram of a car tailgate structure according to one or more embodiments of the present invention;

[0029] Figure 2 This is a schematic diagram of the removal of the outer panel from the tailgate structure of an automobile according to one or more embodiments of the present invention;

[0030] Figure 3 This is a schematic diagram of the inner plate structure according to one or more embodiments of the present invention;

[0031] Figure 4 This is a schematic diagram of the upper outer plate structure according to one or more embodiments of the present invention;

[0032] Figure 5 This is a schematic diagram of the taillight mounting plate structure according to one or more embodiments of the present invention;

[0033] Figure 6 This is a schematic diagram of the hinge reinforcement plate structure according to one or more embodiments of the present invention;

[0034] Figure 7 This is a schematic diagram of the gas spring reinforcing plate structure according to one or more embodiments of the present invention;

[0035] Figure 8 This is a schematic diagram of the locking reinforcement plate structure according to one or more embodiments of the present invention;

[0036] In the diagram: 1. Lower outer panel, 2. Taillight mounting plate, 3. Upper outer panel, 4. Lock reinforcement plate, 5. Inner panel, 6. Gas spring reinforcement plate, 7. Hinge reinforcement plate;

[0037] 201. Inclined boss;

[0038] 301. Upper outer panel boss; 302. Spoiler mounting surface; 303. Boss at the taillight recess.

[0039] 401. Structural adhesive groove; 402. Flanged edge; 403. Lock mounting surface;

[0040] 501. V-shaped main rib; 502. Vertical rib; 503. Lock mounting boss; 504. Support leg; 505. Horizontal beam; 506. Weight reduction hole; 507. R-angle structure; 508. Welded edge corner; 509. Hinge mounting boss; 510. Side beam.

[0041] 601. Flanged weight reduction hole; 602. Through rib; 603. Raised rib;

[0042] 701. Flat bar, 702. Through bar, 703. Top flange, 704. Convex bar.

[0043] The distances or dimensions between parts have been exaggerated to show their positions; the diagram is for illustrative purposes only. Detailed Implementation

[0044] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0046] For ease of description, the words "up," "down," "left," and "right" appearing in this invention only indicate that they are consistent with the up, down, left, and right directions of the accompanying drawings themselves, and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] Terminology Explanation: In this invention, terms such as “installation,” “connection,” “linking,” and “fixing” should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction relationship between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In a typical embodiment of the present invention, such as Figures 1-2 As shown, a car tailgate structure is proposed, which includes an outer panel structure and an inner panel structure, and the outer panel structure and the inner panel structure are connected.

[0049] The outer panel structure includes a lower outer panel 1 and an upper outer panel 3. The lower outer panel 1 is positioned below the upper outer panel 3, and the middle portion of the bottom of the upper outer panel 3 is fixedly connected to the lower outer panel 1. In this embodiment, the middle portions of the upper outer panel 3 and the lower outer panel 1 are connected by solder joints.

[0050] Taillight mounting plates 2 are provided on both sides between the upper outer plate 3 and the lower outer plate 1. Two taillight mounting plates 2 are provided and are symmetrically fixed on the left and right sides between the upper and lower outer plates. In this embodiment, the taillight mounting plates 2 are welded to the upper and lower outer plates by welding points.

[0051] The inner panel structure includes an inner panel 5, a lock reinforcement plate 4 is fixedly installed in the middle part of the bottom of the inner panel 5, hinge reinforcement plates 7 are installed on both sides of the top of the inner panel 5, and gas spring reinforcement plates 6 are installed on both sides of the middle of the inner panel 5.

[0052] Two hinge reinforcement plates 7 are provided, and the two hinge reinforcement plates 7 are symmetrically arranged on the top of the inner plate 5.

[0053] Two gas spring reinforcing plates 6 are provided, and the two gas spring reinforcing plates 6 are symmetrically arranged in the middle of the inner plate 5.

[0054] In this embodiment, the hinge reinforcement plate 7, the gas spring reinforcement plate 6, and the lock reinforcement plate 4 are all directly connected to the inner plate 5 through weld points and bolts.

[0055] When connecting the inner panel structure and the outer panel structure, the taillight mounting plate 2 is welded to the inner panel through welding points, and the upper outer panel 3 and the lower outer panel 1 are both connected to the inner panel 5 through flanges.

[0056] Among them, a window frame is set in the upper middle part of the inner panel 5, and a V-shaped main rib 501 is set between the bottom of the window frame and the lock installation area of ​​the inner panel. The V-shaped main rib 501 is V-shaped in general and is set at the corner from the lock installation area of ​​the inner panel to the lower corner of the window frame. The V-shaped main rib 501 crosses the recessed position of the taillight box.

[0057] The lock mounting area corresponds to the mounting position of the lock reinforcement plate 4, and the recessed position of the taillight box corresponds to the mounting position of the taillight mounting plate.

[0058] A horizontal beam 505 is placed in the middle of the V-shaped main reinforcement 501 and lapped onto the V-shaped main reinforcement. The horizontal beam 505 is set horizontally and its two ends are connected between the two diagonal reinforcements of the V-shaped main reinforcement 501.

[0059] The horizontal beam 505 is equipped with multiple vertical reinforcing bars 502. The vertical reinforcing bars 502 are set vertically, and some of the vertical reinforcing bars 502 are welded from the bottom edge of the window frame to the V-shaped main reinforcing bar 501. The vertical reinforcing bars 502 are fixedly connected between the bottom of the window frame and the V-shaped main reinforcing bar.

[0060] Multiple vertical ribs 502 are arranged symmetrically on the left and right sides. In this embodiment, six vertical ribs 502 can be set, and the multiple vertical ribs 502 are arranged in parallel and at intervals.

[0061] By combining V-shaped main ribs, horizontal beams, and vertical ribs, the V-shaped main ribs are placed between the window frame and the lock installation area and cross the taillight recess, making the upper and lower force transmission path continuous. This can greatly compensate for the stiffness discontinuity caused by the through-type taillight box recess, ensure the continuity of the stiffness transmission path from the window frame to the side beam and lock position, enhance the bending resistance, and improve the overall bending and torsional resistance of the tailgate.

[0062] Furthermore, side beams 510 are provided on both sides of the inner panel 5. The V-shaped main ribs 501 on the inner panel 5 overlap with the side beams 510 to form a R-angle structure 507 with a height difference. The crossbeam and the outer panel are connected. Support legs 504 are provided from the edge of the lower end of the window frame crossbeam 505 to support the lower outer panel 1, so that the middle part of the inner panel is formed by the support legs 504, the crossbeam and the outer panel to form a closed cavity structure. The cavity has good bending resistance, thereby improving the bending resistance of the rear door at the recessed position of the taillight box.

[0063] Two R-angle structures are set up, and the two R-angle structures are set symmetrically on the left and right.

[0064] The inner plate 5 is provided with a lock mounting boss 503 at the lock reinforcing plate 4, and the inner plate 5 is provided with a hinge mounting boss 509 at the hinge reinforcing plate. Both the lock mounting boss 503 and the hinge mounting boss 509 have R-angles. Under the premise of ensuring installation space, the mounting point is as close as possible to the R-angle of the boss, which effectively improves the rigidity of the connection point.

[0065] Two hinge mounting bosses are provided, and the two hinge mounting bosses are set symmetrically on the left and right.

[0066] In a further design, the inner panel is provided with welded corner edges 508 corresponding to the corners of the window frame. The upper and lower welded edges of the window frame span the four corners of the window frame. The addition of welded edges at the corners enhances the rigidity of the door, thereby ensuring the overall bending and torsional resistance of the rear door.

[0067] Four welding edge corners 508 are provided, and the four welding edge corners 508 are placed at the four corners of the window frame respectively.

[0068] The inner panel is equipped with multiple weight-reduction holes 506 below the window frame. The weight-reduction holes 506 have flanges to ensure that the weight of the rear door is reduced to the greatest extent without reducing the rigidity.

[0069] Five weight-reducing holes 506 are provided, which are respectively opened on the side, middle and crossbeam of the V-shaped main reinforcement.

[0070] The upper outer panel 3 has a boss 301 at the top and a spoiler mounting surface 302 at the bottom corresponding to the boss 301. A window frame is set in the middle of the upper outer panel 3. The spoiler mounting surface 302 of the upper outer panel is made as narrow as possible so that the boss 301 is as large as possible to increase the cross-section of the upper beam of the window frame, thereby improving the stiffness of the spoiler mounting point and the overall stiffness of the upper beam.

[0071] Multiple taillight recess protrusions 303 are provided between the bottom middle part of the upper outer panel and the lower outer panel to enhance rigidity and improve the bending resistance of the taillight box itself.

[0072] The taillight mounting plate 2 is provided with multiple slanted protrusions 201, which are located at the upper and lower R-angle positions of the taillight mounting plate. The slanted protrusions enhance the rigidity and improve the bending resistance of the taillight box itself.

[0073] In this embodiment, five protrusions are provided in the recessed area of ​​the taillight, and five slanted protrusions are provided on a taillight mounting plate.

[0074] The hinge reinforcement plate 7 has a through rib 702 in the middle. By setting a large through rib 702 in the middle of the hinge reinforcement plate, the cavity area of ​​the window frame corner can be increased. The hinge reinforcement plate 7 has multiple flat ribs 701 on the through rib, which overlap with the welding surface of the window frame. The top of the hinge reinforcement plate 7 has an upper flange 703 and a row of welding points. Corresponding to the side of the upper flange, a convex rib 704 and a row of welding points are set. This can improve the rigidity of the hinge mounting point and the bending and torsional resistance of the corner.

[0075] The hinge reinforcement plate 7 has a hinge mounting surface, and the flat rib is located at the lower end of the hinge mounting surface.

[0076] In this embodiment, three flat ribs 701 are provided, and the flat ribs and through ribs 702 are arranged approximately perpendicularly.

[0077] The upper end of the gas spring reinforcing plate extends across the lower R-corner of the window frame, and the lower end extends across the taillight box section. In other words, the upper end of the gas spring reinforcing plate extends above the lower R-corner of the window frame, and the lower end extends below the taillight box, effectively compensating for the stiffness of the tailgate at the taillight box.

[0078] A through rib 602 is provided in the middle of the gas spring reinforcing plate 6, and multiple flanged weight reduction holes 601 are provided on the through rib 602 to reduce weight to the greatest extent while ensuring the continuity of the upper and lower stiffness.

[0079] The gas spring reinforcing plate 6 has a gas spring mounting surface, and a raised rib 603 is added around the gas spring mounting surface to improve the local rigidity and load-bearing capacity without increasing the weight.

[0080] In this embodiment, three flange weight reduction holes are provided.

[0081] The lock reinforcing plate 4 has two widened and deepened flanges 402 on both sides. The lower end of the lock reinforcing plate 4 is connected to the inner plate sealing surface through a structural adhesive groove 401. The lock mounting surface 403 is set in the middle of the lock reinforcing plate 4. While ensuring the lock mounting space, the lock mounting surface 403 is made as narrow as possible, so as to improve the connection rigidity of the lock with the least amount of material.

[0082] In this embodiment, two flanges 402 are provided, and the two flanges are symmetrically arranged on both sides of the lock reinforcement plate 4.

[0083] In another typical embodiment of the present invention, a car is proposed that includes the rear tailgate structure described above.

[0084] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A car tailgate structure, characterized in that, It includes an outer panel structure and an inner panel structure that are connected to each other; the inner panel structure includes an inner panel, a window frame is provided in the upper middle part of the inner panel, a V-shaped main rib is provided between the bottom of the window frame and the lock installation area of ​​the inner panel, the V-shaped main rib crosses the recessed position of the taillight box, a crossbeam is arranged in the middle of the V-shaped main rib, and the two ends of the crossbeam are fixedly connected to the V-shaped main rib. A lock reinforcement plate is fixedly installed at the bottom middle part of the inner plate, hinge reinforcement plates are installed on both sides of the top of the inner plate, and gas spring reinforcement plates are installed on both sides of the middle part of the inner plate; a lock mounting boss is provided on the inner plate corresponding to the lock reinforcement plate, and a hinge mounting boss is provided on the inner plate at the hinge reinforcement plate. Both the lock mounting boss and the hinge mounting boss have R angles. The gas spring reinforcing plate has a through rib in the middle, and multiple flanged weight reduction holes are provided on the through rib; the gas spring reinforcing plate has a gas spring mounting surface, and raised ribs are provided around the gas spring mounting surface; the lock reinforcing plate has flanges on both sides, the lower end of the lock reinforcing plate is connected to the sealing surface through a structural adhesive groove, and the lock reinforcing plate has a lock mounting surface in the middle.

2. The automobile tailgate structure as described in claim 1, characterized in that, The horizontal beam is provided with multiple vertical bars, which lap from the bottom of the window frame onto the V-shaped main bar. The multiple vertical bars are arranged in parallel and at intervals.

3. The automobile tailgate structure as described in claim 1, characterized in that, Side beams are provided on both sides of the inner panel, and the V-shaped main reinforcement overlaps with the side beams to form an R-angle structure; the edge of the crossbeam is provided with support legs to support the outer panel structure, so that the middle part of the inner panel, the taillight box and the outer panel structure form a closed cavity structure.

4. The automobile tailgate structure as described in claim 1, characterized in that, The inner panel is provided with welded corner edges corresponding to the corners of the window frame, and multiple weight-reducing holes are provided below the window frame on the inner panel, with the weight-reducing holes having flanges.

5. The automobile tailgate structure as described in claim 1, characterized in that, The hinge reinforcement plate has a through rib in the middle, and multiple flat ribs are provided on the through rib to overlap the welding surface of the window frame. The top of the hinge reinforcement plate has an upper flange, and a protruding rib is provided on the side corresponding to the upper flange.

6. The automobile tailgate structure as described in claim 1, characterized in that, The outer panel structure includes an upper outer panel, the bottom middle part of which is fixedly connected to the lower outer panel, and taillight mounting plates are provided on both sides between the upper and lower outer panels. The taillight mounting plates are fixedly connected to the inner panel, and both the upper and lower outer panels are connected to the inner panel by flanges.

7. The automobile tailgate structure as described in claim 6, characterized in that, The taillight mounting plate is provided with multiple sloping protrusions, the top of the upper outer plate is provided with an upper outer plate protrusion, the bottom of the upper outer plate is provided with a spoiler mounting surface corresponding to the upper outer plate protrusion, the middle of the upper outer plate is provided with a window frame, and multiple taillight recess protrusions are provided between the middle part of the bottom of the upper outer plate and the lower outer plate.

8. A car characterized by, Including the automobile tailgate structure as described in any one of claims 1-7.

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