Backdoor inner panel for vehicle

Abstract

The utility model discloses a back door inner plate for a vehicle, the back door inner plate is provided with a window frame, the lower edge of the window frame is flanged towards the outer side to form a flanging part, and the flanging part comprises a mounting part used for being fixedly connected with a back door outer plate of the vehicle; the flanging part is arranged on the lower edge of the window frame of the vehicle door inner plate, the flanging part is used for completing lap joint with the vehicle door outer plate so as to reduce the drawing forming depth of the vehicle door inner plate, and meanwhile the process notch is formed in the corner connecting position between the lower portion of the window frame of the vehicle door inner plate and the side wall of the window frame so as to guarantee the forming quality of the flanging part. The supporting piece is further arranged in the flanging part, the hole sites with different angles are formed in the supporting piece, the strength of the flanging part and the strength of the back door inner plate are improved, meanwhile, arrangement of part of the hole sites with the different angles is completed, and the punching angle of the hole sites of the back door inner plate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body structure technology, specifically to an inner panel for the tailgate of a vehicle. Background Technology

[0002] Modern cars are becoming increasingly innovative and sharp in design, especially the tailgate design, which has higher and higher requirements. In order to ensure the overlap strength between the inner and outer tailgate panels in the tailgate assembly and the strength of the inner tailgate panel itself, a convex shape is usually designed on the inner tailgate panel at the lower part of the window frame, and this convex shape is used to overlap with the outer tailgate panel.

[0003] However, in actual molding and manufacturing processes, designing sheet metal structures (especially covering parts like the inner panel of a rear door) with an upward-convex profile typically leads to an increase in the drawing depth of the sheet metal structure. Taking the inner panel of a rear door as an example, because the upward-convex shape is located at the lower part of the window frame, a significant height difference easily forms between the upward-convex shape and the sealing surface on the inner panel of the rear door. This results in a high risk of cracking during the drawing process of the entire inner panel of the rear door, leading to poor production stability of the part. In existing technologies, to solve the problem of sheet metal structure cracking during drawing, a larger forming radius (R-angle) and a reinforced bevel are usually designed at the upward-convex shape of the inner panel of the rear door to ensure forming quality. However, this design undoubtedly increases the difficulty of mold manufacturing and affects the blanking design of subsequent processes, thus affecting the production stability of the inner panel of the rear door and easily increasing the scrap rate of the product. At the same time, a larger forming radius also means that a sheet metal with higher ductility is required, increasing production costs.

[0004] Therefore, it is necessary to improve the existing overall structure of the back door inner panel in order to solve the problems existing in the current technology. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a tailgate inner panel for a vehicle, which replaces the convex shape by designing a flanged structure on the lower edge of the window frame of the inner panel, and providing process notches for forming the flanged part at both ends near the lower edge of the window frame, so as to ensure the forming quality of the flanged part and reduce the actual drawing forming depth of the inner panel.

[0006] The present invention provides an inner tailgate panel for a vehicle, wherein the inner tailgate panel has a window frame, the lower edge of the window frame is turned outward to form a flange, the flange includes a mounting part for connecting and fixing with the outer tailgate panel of the vehicle, and the inner tailgate panel has process notches formed at both ends near the lower edge of the window frame for forming the flange.

[0007] Furthermore, the flanged portion also includes an arc-shaped transition section, which protrudes radially inward to form a transition section rib for increasing the strength of the flanged portion.

[0008] Furthermore, a support member is provided on the radially inner side of the arc transition section of the flanged part. One end of the support member is fixed to the mounting part, and the other end is fixed to the radially inner side of the arc transition section.

[0009] Furthermore, the support member has side plates on both sides in the width direction of the vehicle body, and the bottom of the side plate extends outward to form a wing plate, which is fixed to the flange by fitting together with the wing plate.

[0010] Furthermore, the inner panel of the tailgate has a first connecting hole for connecting with the body sheet metal, and the support member has a second connecting hole for connecting with the body sheet metal. The central axis of the first connecting hole and the central axis of the second connecting hole are set at an angle.

[0011] Furthermore, the mounting portion is planar and is provided with mounting ribs to enhance its strength.

[0012] Furthermore, the mounting part has several protruding ribs, and these protruding ribs are evenly distributed along the length of the mounting part at a set interval.

[0013] Furthermore, the mounting part protrudes outward from the mounting part, and during installation, the outer panel of the back door overlaps with the mounting part, forming an overlapping cavity between adjacent mounting part protrusions.

[0014] Furthermore, it also includes a sealing plate used to close the process gaps located at both ends of the lower edge of the window frame.

[0015] Furthermore, the sealing plate extends along the side edge of the window frame to form a reinforcing part and is fixedly attached to the inner panel of the back door.

[0016] The beneficial effects of this utility model are:

[0017] (1) The lower edge of the window frame of the inner panel of the back door is designed as a flange structure. The lower left and lower right corners of the inner panel of the back door are designed as process notches, which can reduce the drawing depth of the inner panel of the back door. The process supplements at the lower left and lower right corner notches can be optimized and adjusted according to the forming analysis, effectively improving the drawing margin of the inner panel of the back door, reducing the difficulty of part debugging and production, and improving production efficiency.

[0018] (2) The mounting part is designed as a concave-convex plane, which increases the strength of the flange and forms an overlapping cavity with the outer panel of the back door, reduces the amount of overlap matching, increases the strength of the overlap between the inner panel of the back door and the outer panel of the back door, and enhances the electrophoresis performance.

[0019] (3) The flanged part is designed with a transition section rib. The transition section rib is arranged on the arc transition section, starting at the lower end of the arc transition section and ending at the upper end of the arc transition section, which ensures the feasibility of the flanged process on the inner panel of the back door while increasing the flanged strength and flanged size stability.

[0020] (4) The design of the sealing plate is to fit and connect the inner panel of the back door with the flange on the lower edge of the window frame, the side edge of the window frame, the support rod surface of the inner panel of the back door, and the sealing surface of the inner panel of the back door, so as to form a complete window frame and enhance the support of the back door support rod and the strength of the inner panel of the back door.

[0021] (5) The support component is designed to weld and overlap the arc transition section of the back door inner panel, the flange part and the mounting part of the flange part, and to arrange holes with different punching angles on the support component. While increasing the strength of the flange part and the overall strength of the back door inner panel, it completes the arrangement of some holes with different angles, reduces the punching angle of the back door inner panel holes, effectively reduces the number of back door inner panel molds and reduces the complexity of mold structure, thereby reducing mold development costs and production maintenance difficulties and costs. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0023] Figure 1 This is a schematic diagram of the structure of the inner panel of the tailgate of a vehicle facing outwards in this utility model.

[0024] Figure 2 This is a schematic diagram of the structure of the inner panel of the rear door facing the inside of the vehicle in this utility model;

[0025] Figure 3 This is a schematic diagram showing the connection between the inner panel and the outer panel of the rear door in this utility model.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0027] Figure 5 This is a schematic diagram of the reinforcing member in this utility model;

[0028] Figure 6 This is a schematic diagram of the support component in this utility model;

[0029] The attached figures are labeled as follows: 1-Inner panel of the rear door; 2-Flanged edge; 3-Transition section rib; 4-Mounting part; 5-Mounting part rib; 6-Process notch; 7-Sealing plate; 8-Supporting component; 9-Sealing surface of the inner panel of the rear door; 10-Strut surface of the inner panel of the rear door; 11-Outer panel of the rear door; 12-Overlapping cavity; 13-Arc-shaped transition section; 14-Reinforcing part; 15-First connecting hole; 16-Second connecting hole; 17-Side plate; 18-Wing plate. Detailed Implementation

[0030] As shown in the figure, in the tailgate inner panel of the vehicle provided by this utility model, the tailgate inner panel 1 has a window frame, and the lower edge of the window frame is turned outward to form a flange 2. The flange 2 includes a mounting part 4 for connecting and fixing with the tailgate outer panel 11 of the vehicle. The tailgate inner panel 1 has process notches 6 formed at both ends near the lower edge of the window frame for forming the flange 2. In the prior art, the tailgate inner panel 1 also has a window frame structure during the forming process, and the lower part of the window frame is usually designed with an upward convex shape to achieve overlap with the tailgate outer panel 11. However, the upward convex shape usually leads to an increase in the forming depth of the tailgate inner panel 1, and the upward convex shape and The excessive height difference of the sealing surface 9 of the tailgate inner panel increases the risk of cracking of the tailgate inner panel 1 during the drawing process, which will affect the production stability of the tailgate inner panel 1. Therefore, this solution replaces the upward convex shape by designing the lower edge of the window frame of the tailgate inner panel 1 as a flange 2 in the existing technology. At the same time, an installation part 4 is provided on the flange 2. The installation part 4 is overlapped with the tailgate outer panel 11 and welded to fix it, so as to reduce the forming depth of the tailgate inner panel 1 and ensure the connection and fixation between the tailgate inner panel 1 and the tailgate outer panel 11. The lower edge of the window frame refers to the edge of the tailgate inner panel 1 located at the lower part of the window frame in the vehicle height direction, and the flange 2 is formed by flanged the lower edge of the window frame towards the outside of the vehicle.

[0031] Combination Figure 2 As shown, during the sheet metal forming process, the flanging process can easily cause the sheet metal around the flanged part 2 to crack. Therefore, in this solution, in order to avoid the back door inner panel 1 being cracked and affecting the quality of the window frame and the overall strength of the back door inner panel 1, process notches 6 for forming the flanged part 2 are formed at both ends of the lower edge of the window frame to reduce the risk of cracking of the back door inner panel 1 during the drawing process and ensure the production stability of the back door inner panel 1. Specifically, the two ends of the lower edge of the window frame refer to the ends of the corners where the lower edge and the side edges of the window frame are connected on the back door inner panel 1.

[0032] In this embodiment, the flanged portion 2 further includes an arc-shaped transition section 13, which protrudes radially inward to form a transition section rib 3 for increasing the strength of the flanged portion 2; combined with Figure 2 and Figure 3 As shown, the arc-shaped transition section 13 and the mounting part 4 are integrally formed to form the flange part 2, and the mounting part 4 is located outside the arc-shaped transition section 13. The arc-shaped transition section 13 is mainly used to connect the mounting part 4 and the lower edge of the window frame of the inner panel of the back door 1. Therefore, in order to increase the overall strength of the flange part 2, the radial inner side of the arc-shaped transition section 13 protrudes inward to form a transition section rib 3. The transition section rib 3 increases the strength of the flange part 2 and also increases the dimensional stability of the flange part 2, ensuring the rigidity and dimensional stability of the inner panel of the back door 1.

[0033] In this embodiment, a support member 8 is provided on the radially inner side of the flanged portion 2 located on the arc-shaped transition section 13. One end of the support member 8 is fixed to the mounting portion 4, and the other end is fixed on the radially inner side of the arc-shaped transition section 13. Side plates 17 are provided on both sides of the support member 8 in the vehicle width direction. The bottom of the side plates 17 extends outward to form a wing plate 18, which is then attached and fixed to the flanged portion 2. Figures 1 to 4 As shown, the support member 8 is mainly installed on the radial inner side of the flanged part 2 after the inner panel 1 of the tailgate is formed, which is used to further increase the strength of the flanged part 2. The support member 8 has side plates 17 on both sides in the width direction of the vehicle body, and the bottom of the side plate 17 extends outward to form a wing plate 18. The wing plate 18 is provided with mounting holes for bolt connection with the mounting part 4. The support member 8 is connected and fixed to the inner panel 1 of the tailgate by bolts and other connecting components to achieve the initial installation and positioning with the inner panel 1 of the tailgate. Then, the periphery of the support member 8 overlaps with the inner panel 1 of the tailgate at the arc transition section 13 and is welded and fixed. At the same time, the end of the support member 8 near the mounting part 4 overlaps with the mounting part 4 and is welded and fixed to improve the strength of the mounting part 4.

[0034] In this embodiment, the inner panel 1 of the tailgate is provided with a first connecting hole 15 for connecting with the body sheet metal, and the support member 8 is provided with a second connecting hole 16 for connecting with the body sheet metal. The central axis of the first connecting hole 15 and the central axis of the second connecting hole 16 are set at an angle. In the prior art, the inner panel 1 of the tailgate is usually provided with multiple connecting holes for connecting and installing with different body sheet metals or body parts. However, due to the installation position, the central axes of different connecting holes of different body sheet metals are not parallel. This leads to the need to arrange punching dies with different stamping angles in the process design stage of the inner panel 1 of the tailgate. In this solution, by setting the first connecting hole 15 with the same stamping angle on the inner panel 1 of the tailgate, and then providing the second connecting hole 16 on the support member 8 at an angle to the central axis of the first connecting hole 15, the forming process design of the inner panel 1 of the tailgate is optimized, the arrangement of holes with different stamping angles is completed, the number of different stamping angles on the inner panel 1 of the tailgate is reduced, the number of dies of the inner panel 1 of the tailgate is reduced, the complexity of the die structure is reduced, and the die development cost and production maintenance difficulty and cost are reduced.

[0035] In this embodiment, the mounting part 4 is planar and is provided with mounting part protrusions 5 to strengthen the mounting part 4; there are several mounting part protrusions 5, and the several mounting part protrusions 5 are evenly distributed along the length direction of the mounting part 4 at a set interval; wherein the mounting part 4 is mainly designed as a planar structure, and is provided with mounting part protrusions 5 to strengthen the mounting part 4. At the same time, the mounting part 4 is also fixed to the outer panel 11 of the back door by overlapping the mounting part protrusions 5. There are several mounting part protrusions 5 evenly distributed along the length direction of the mounting part 4 at a set interval. By using the mounting part protrusions 5 to overlap and weld to the outer panel 11 of the back door, the welding overlap matching amount between the inner panel 1 of the back door and the outer panel 11 of the back door can be effectively reduced.

[0036] In this embodiment, the mounting rib 5 protrudes outward from the mounting part 4. During installation, the outer panel 11 of the back door overlaps with the mounting part 4, forming an overlapping cavity 12 between adjacent mounting ribs 5; combined with Figure 2 and Figure 3 As shown, the mounting part protrusion 5 is formed by the mounting part 4 protruding in the direction of installation with the outer panel 11 of the tailgate. When the outer panel 11 of the tailgate and the inner panel 1 of the tailgate are installed, the outer panel 11 of the tailgate overlaps with the mounting part 4 and forms an overlap cavity 12 between the adjacent mounting part protrusion 5, which increases the overlap strength between the inner panel 1 of the tailgate and the outer panel 11 of the tailgate and improves the electrophoresis performance.

[0037] In this embodiment, a sealing plate 7 is also included, which is used to close the process notches 6 located at both ends of the lower edge of the window frame; combined with Figure 1 As shown, the sealing plate 7 consists of two pieces symmetrically arranged at the process gaps 6 on the left and right ends of the lower edge of the window frame, and the process gaps 6 are closed. At the same time, the sealing plate 7 also has a mounting part 4 structure at the end near the window frame, so that the sealing plate 7 can be welded to the inner panel 1 of the back door to form a complete window frame structure. This design can improve the design margin of the drawing process supplement at the lower left and lower right corners of the window frame of the inner panel 1 of the back door, reduce the difficulty of the process design of the inner panel 1 of the back door, and improve production stability.

[0038] In this embodiment, the sealing plate 7 extends along the side edge of the window frame to form a reinforcing part 14 and is fixedly attached to the inner panel 1 of the back door; combined with Figure 1 and Figure 4 As shown, the sealing plate 7 extends outward at the end facing the side edge of the window frame to form a reinforcing part 14. The reinforcing part 14 first passes through the sealing surface 9 of the inner panel of the back door and finally reaches the support rod surface 10 of the inner panel of the back door to provide the rigidity of the back door and the support strength of the support rod. The reinforcing part 14 is fixed to the inner panel of the back door by fitting. The lower end of the sealing plate 7 also extends downward to form a reinforcing part 14 to strengthen the inner panel of the back door 1.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A back door inner panel for a vehicle, characterized by: The back door inner plate is provided with a window frame, the lower edge of the window frame is outwardly turned to form a turned edge portion, the turned edge portion includes a mounting portion for connecting and fixing with the back door outer plate of the vehicle, and the back door inner plate is provided with process notches for forming the turned edge portion at both ends close to the lower edge of the window frame.

2. The back door inner panel for a vehicle according to claim 1, characterized by: The turned edge portion further includes an arc-shaped transition section, and the arc-shaped transition section is radially inwardly raised to form a transition section protruding rib for increasing the strength of the turned edge portion.

3. The back door inner panel for a vehicle according to claim 2, characterized by: The turned edge portion is provided with a support on the radially inner side of the arc-shaped transition section, one end of the support is fixed on the mounting portion, and the other end is fixed on the radially inner side of the arc-shaped transition section.

4. The back door inner panel for a vehicle according to claim 3, characterized by: The support is provided with side plates on both sides in the width direction of the vehicle body, the bottom of the side plate extends outwardly to form a wing plate, and the wing plate is fixedly connected with the turned edge portion.

5. The back door inner panel for a vehicle according to claim 3, characterized by: The back door inner plate is provided with a first connecting hole for connecting with the body panel, the support is provided with a second connecting hole for connecting with the body panel, and the center axis of the first connecting hole is arranged at an angle with the center axis of the second connecting hole.

6. The back door inner panel for a vehicle according to claim 1, characterized by: The mounting portion is a plane, and the mounting portion is provided with a mounting portion protruding rib for strengthening the strength of the mounting portion.

7. The back door inner panel for a vehicle according to claim 6, characterized by: The mounting portion protruding rib is a plurality of, and the plurality of mounting portion protruding ribs are uniformly distributed along the length direction of the mounting portion at a set interval.

8. The back door inner panel for a vehicle according to claim 7, characterized by: The mounting portion protruding rib is outwardly protruded from the mounting portion, and when the back door outer plate is overlapped on the mounting portion, a lap cavity is formed between adjacent mounting portion protruding ribs.

9. The back door inner panel for a vehicle according to claim 2, characterized by: Further including a closing plate for closing the process notches at both ends of the lower edge of the window frame.

10. The back door inner panel for a vehicle according to claim 9, characterized by: The closing plate extends in the direction of the side edge of the window frame to form a reinforcing portion and is fixedly connected with the back door inner plate.

Images