CN110626156B - Back door frame and vehicle - Google Patents

Back door frame and vehicle Download PDF

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Publication number
CN110626156B
CN110626156B CN201810662628.6A CN201810662628A CN110626156B CN 110626156 B CN110626156 B CN 110626156B CN 201810662628 A CN201810662628 A CN 201810662628A CN 110626156 B CN110626156 B CN 110626156B
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China
Prior art keywords
plate
support plate
flange
inner support
door frame
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CN110626156A (en
Inventor
房丽红
谭波
秦小刚
陈晓新
张荣荣
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BYD Co Ltd
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BYD Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60JWINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00Doors
    • B60J5/10Doors arranged at the vehicle rear

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention relates to a back door frame and a vehicle, wherein the back door frame comprises a door frame inner plate, a door frame outer plate and an inner supporting plate, the door frame inner plate is connected with the door frame outer plate, an annular cavity is formed between the door frame inner plate and the door frame outer plate, and the inner supporting plate is arranged in the annular cavity and is respectively connected with the door frame inner plate and the door frame outer plate. Through set up the interior backup plate of being connected with door frame inner panel and door frame planking respectively in the annular chamber is internal, can promote the stability of back door frame structure for the ability reinforcing of door frame inner panel and door frame planking resistance to deformation, thereby promote the torsional rigidity of back door frame, promote the torsional rigidity of whole automobile body then.

Description

Back door frame and vehicle
Technical Field
The invention relates to the technical field of vehicles, in particular to a back door frame and a vehicle with the same.
Background
The torsional rigidity of the automobile body is an important item in a plurality of performance indexes of the automobile body and determines the quality and the performance of the automobile. The high torsional rigidity of the vehicle body can reduce the deformation of the vehicle body during the running of the vehicle, prevent the collision and the friction with peripheral parts and prevent abnormal sound; the torsional mode of the vehicle body is determined by the torsional rigidity of the vehicle body, if the rigidity is insufficient, the torsional mode frequency of the whole vehicle is low, and the whole vehicle is easy to couple with external excitation frequency, so that resonance is generated, and the NVH problem is caused; the automobile turning and line changing operation has high requirements on the torsional rigidity of the automobile body, if the torsional rigidity is insufficient, the torsional angle of the automobile body is large, the following performance of the whole automobile is poor, and the control performance is reduced; when the tires on one side of the automobile are impacted, if the torsional rigidity of the automobile body is low, the deformation of the automobile body on the other side is large, and the automobile door can be clamped on the automobile body frame, so that the automobile door cannot be opened, and the reliability of the automobile is affected. The torsional rigidity of the vehicle body can influence the performances of abnormal sound, NVH (noise, vibration and harshness) performance, operation performance, reliability and the like of the whole vehicle, and the torsional rigidity of the vehicle body is designed by host factories at home and abroad to serve as important performance parameters and control indexes of the early-stage design of the vehicle body.
The prior art has generally employed a means of stiffening the torsional rigidity of the upper vehicle body to increase the torsional rigidity of the overall vehicle body, such as by increasing the structural rigidity of the back door frame.
Chinese patent application publication No. CN10618435A discloses a back door D-ring structure and a frame structure, which are connected to each other. According to the automobile body-in-white structure, the rear bottom plate cross beam, the side wall connecting plate and the top cover rear cross beam are designed on the rear portion of the existing automobile body-in-white structure and connected to form a closed loop structure, so that the rigidity of the rear portion of the automobile body is increased through the double closed loop structure, and the torsional rigidity of the automobile body-in-white is greatly enhanced. However, the invention is developed and designed by a vehicle body platform mainly driven by fuel oil, the torsional rigidity of the vehicle body is improved by enhancing the rear part of the vehicle body, but the invention is influenced by man-machine arrangement, the optimization of the structure is greatly limited, the invention is not suitable for a new energy vehicle, for the new energy vehicle, a power assembly outputs large torque in a short time, the torsional rigidity of the vehicle body is higher than that of the vehicle body of a fuel oil vehicle, and the requirement on the integral rigidity of a back door frame is higher.
Disclosure of Invention
The invention aims to provide a back door frame which is good in structural stability and high in torsional rigidity.
In order to achieve the purpose, the invention provides a back door frame which comprises a door frame inner plate, a door frame outer plate and an inner supporting plate, wherein the door frame inner plate is connected with the door frame outer plate, an annular cavity is formed between the door frame inner plate and the door frame outer plate, and the inner supporting plate is arranged in the annular cavity and is respectively connected with the door frame inner plate and the door frame outer plate.
Optionally, the back door frame is a rectangular frame structure, and the four inner supporting plates are respectively arranged at four corners of the back door frame.
Optionally, the door frame inner plate comprises a left D column inner plate reinforcing plate, a top cover rear cross beam inner plate, a right D column inner plate reinforcing plate, a right D column inner plate, a rear coaming inner plate and a left D column inner plate which are sequentially connected end to end, the door frame outer plate comprises a top cover rear cross beam outer plate, a right launder outer plate, a rear coaming outer plate and a left launder outer plate which are sequentially connected end to end, the four inner bracing plates comprise a first inner bracing plate, a second inner bracing plate, a third inner bracing plate and a fourth inner bracing plate, and two ends of the first inner bracing plate are respectively connected with the left D column inner plate reinforcing plate and the top cover rear cross beam outer plate; two ends of the second inner supporting plate are respectively connected with the right D-column inner plate reinforcing plate and the top cover rear cross beam outer plate; two ends of the third inner supporting plate are respectively connected with the rear coaming inner plate and the rear coaming outer plate; and two ends of the fourth inner supporting plate are respectively connected with the rear coaming inner plate and the rear coaming outer plate.
Optionally, the first inner supporting plate comprises a first inner supporting plate bottom plate and a first inner supporting plate first flanging, a first inner supporting plate second flanging, a first inner supporting plate third flanging and a first inner supporting plate fourth flanging which are formed around the first inner supporting plate bottom plate, the first inner supporting plate first flanging and the first inner supporting plate third flanging are formed on two opposite sides of the first inner supporting plate bottom plate, the first inner supporting plate first flanging and the first inner supporting plate third flanging are turned over in opposite directions, the first inner supporting plate second flanging and the first inner supporting plate fourth flanging are formed on the other two opposite sides of the first inner supporting plate bottom plate, the first inner supporting plate second flanging and the first inner supporting plate fourth flanging are turned over in opposite directions, the first inner supporting plate first flanging and the first inner supporting plate second flanging are connected with the left D column inner plate reinforcing plate, and the first inner supporting plate third flanging and the first inner supporting plate fourth flanging are connected with the top cover rear cross beam outer plate.
Optionally, the second inner supporting plate comprises a second inner supporting plate bottom plate and a second inner supporting plate first flanging, a second inner supporting plate second flanging, a second inner supporting plate third flanging and a second inner supporting plate fourth flanging which are formed around the second inner supporting plate bottom plate, the second inner supporting plate first flanging and the second inner supporting plate third flanging are formed on two opposite sides of the second inner supporting plate bottom plate and the second inner supporting plate first flanging and the second inner supporting plate third flanging are turned over in opposite directions, the second inner supporting plate second flanging and the second inner supporting plate fourth flanging are formed on the other two opposite sides of the second inner supporting plate bottom plate and the second inner supporting plate second flanging and the second inner supporting plate fourth flanging are turned over in opposite directions, the second inner supporting plate first flanging and the second inner supporting plate second flanging are connected with the right D column inner plate reinforcing plate, and the second inner supporting plate third flanging and the second inner supporting plate fourth flanging are connected with the top cover rear cross beam outer plate.
Optionally, the third inner supporting plate includes a third inner supporting plate bottom plate and a third inner supporting plate first flange, a third inner supporting plate second flange, a third inner supporting plate third flange and a third inner supporting plate fourth flange that are formed around the third inner supporting plate bottom plate and are folded along the same direction, the third inner supporting plate first flange and the third inner supporting plate third flange are formed on two opposite sides of the third inner supporting plate bottom plate, the third inner supporting plate second flange and the third inner supporting plate fourth flange are formed on the other two opposite sides of the third inner supporting plate bottom plate, the third inner supporting plate first flange and the third inner supporting plate second flange are connected with the rear panel inner plate, and the third inner supporting plate third flange and the third inner supporting plate fourth flange are connected with the rear panel outer plate.
Optionally, the fourth inner supporting plate comprises a fourth inner supporting plate bottom plate and a fourth inner supporting plate first flanging, a fourth inner supporting plate second flanging, a fourth inner supporting plate third flanging and a fourth inner supporting plate fourth flanging which are formed around the fourth inner supporting plate bottom plate and are turned over along the same direction, the fourth inner supporting plate first flanging and the fourth inner supporting plate third flanging are formed on two opposite sides of the fourth inner supporting plate bottom plate, the fourth inner supporting plate second flanging and the fourth inner supporting plate fourth flanging are formed on the other two opposite sides of the fourth inner supporting plate bottom plate, the fourth inner supporting plate first flanging and the fourth inner supporting plate second flanging are connected with the rear surrounding plate inner plate, and the fourth inner supporting plate third flanging and the fourth inner supporting plate fourth flanging are connected with the rear surrounding plate outer plate.
Optionally, the first inner supporting plate and the second inner supporting plate are bilaterally symmetrical pieces, and the third inner supporting plate and the fourth inner supporting plate are bilaterally symmetrical pieces.
Optionally, the inner supporting plate is formed with lightening holes.
Through the internal interior shoe plate that is connected with door frame inner panel and door frame planking respectively that sets up at the annular chamber, can promote the stability of back door frame structure for the ability reinforcing of door frame inner panel and door frame planking resistance to deformation, thereby promote the torsional rigidity of back door frame, promote the torsional rigidity of whole automobile body then.
According to another aspect of the present invention, a vehicle is provided, which includes a roof assembly, a right side rail assembly, a rear floor assembly, and a left side rail assembly, and further includes the above-mentioned back door frame, and the back door frame is connected to the roof assembly, the right side rail assembly, the rear floor assembly, and the left side rail assembly, respectively.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the installation of a back door frame according to one embodiment of the present invention;
FIG. 2 is a structural view of a back door frame according to an embodiment of the present invention, in which a partial structure of a left/right launder outer panel is shown, and a roof rear cross member outer panel and a back panel outer panel are not shown;
FIG. 3 is a schematic view of the assembly of the inner support plate with the left D-pillar inner plate reinforcement plate and the right D-pillar inner plate reinforcement plate in the back door frame according to one embodiment of the present invention;
FIG. 4 is a schematic view of the assembly of the inner stay with the outer plate of the top cover rear cross member in the door frame of the back door in accordance with one embodiment of the present invention;
FIG. 5 is a schematic view of the assembly of the inner support plate and the inner plate of the back panel in the back door frame according to one embodiment of the present invention;
FIG. 6 is a schematic view of the assembly of an inner support plate and a back panel outer plate of a back door frame according to one embodiment of the present invention;
fig. 7 is a block diagram of a vehicle according to an embodiment of the present invention.
Description of the reference numerals
1. First inner supporting plate 11 first inner supporting plate bottom plate
12. First inner supporting plate first flanging 13 first inner supporting plate second flanging
14. First inner support plate third flanging 15 first inner support plate fourth flanging
2. Second inner supporting plate 21 second inner supporting plate bottom plate
22. Second inner support plate first flanging 23 second inner support plate second flanging
24. Second inner support plate third flanging 25 second inner support plate fourth flanging
3. Third inner supporting plate 31 third inner supporting plate bottom plate
32. Third inner support plate first flange 33 third inner support plate second flange
34. Third inner support plate third flange 35 third inner support plate fourth flange
4. Fourth inner support plate 41 fourth inner support plate bottom plate
42. Fourth inner support plate first flange 43 fourth inner support plate second flange
44. Fourth inner support plate third flanging 45 fourth inner support plate fourth flanging
5. Left D post inner panel reinforcing plate 6 top cover rear beam inner panel
7. Right D post inner panel reinforcing plate 8 right D post inner panel
9. Rear coaming inner plate 10 left D column inner plate
100. Back door frame 200 inner panel
300. Doorframe outer plate 301 top cover rear cross beam outer plate
302. Right launder outside plate 303 back boarding planking
304. Left launder planking 400 top cap assembly
500. Right side encloses assembly 600 floor assembly
700. Left side wall assembly 800 lightening hole
1000. Vehicle with a steering wheel
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 7, the present invention provides a back door frame 100, which includes a door frame inner plate 200, a door frame outer plate 300, and an inner support plate, wherein the door frame inner plate 200 is connected to the door frame outer plate 300, an annular cavity is formed between the door frame inner plate 200 and the door frame outer plate 300, and the inner support plate is disposed in the annular cavity and is connected to the door frame inner plate 200 and the door frame outer plate 300, respectively. Through set up the interior shoe plate of being connected with door frame inner panel 200 and door frame planking 300 respectively at the annular cavity is internal, can promote the stability of back door frame 100 structure for the ability reinforcing of door frame inner panel 200 and door frame planking 300 resistance to deformation, thereby promote the torsional rigidity of back door frame 100, promote the torsional rigidity of whole automobile body then.
The inner stay may be disposed at any suitable position according to the shape of the back door frame 100. In one embodiment, as shown in fig. 2, the back door frame 100 has a rectangular frame structure, and four inner supporting plates are respectively disposed at four corners of the back door frame 100, so that each inner supporting plate is uniformly stressed, thereby obtaining a better supporting effect. In other alternative embodiments, the number of the inner supporting plates may be any other number, and the invention is not limited in this respect, and when the number of the inner supporting plates is multiple, the multiple inner supporting plates may be uniformly arranged along the circumference of the annular cavity.
Further, as shown in fig. 3 and 5, lightening holes 800 are formed in the inner bracing plate, so that the inner bracing plate has a light weight while satisfying the bracing strength. In addition, by providing the lightening holes 800, the liquid (e.g., lubricating oil) in the annular cavity can circulate in the annular cavity through the lightening holes 800.
In the present invention, the doorframe inner panel 200 may be of any suitable structure and shape. In one embodiment, as shown in fig. 1 and 2, the doorframe inner panel 200 includes a left D-pillar inner panel reinforcement 5, a roof rear rail inner panel 6, a right D-pillar inner panel reinforcement 7, a right D-pillar inner panel 8, a back panel inner panel 9, and a left D-pillar inner panel 10 connected end to end in sequence into a rectangular frame. Wherein, roof rear cross beam inner panel 6 and back panel inner panel 9 extend along the left and right direction (automobile body width direction) of automobile body, and right D post inner panel 8 and left D post inner panel 10 are arranged along the automobile body direction from top to bottom, and left D post inner panel reinforcing plate 5 sets up between roof rear cross beam inner panel 6 and left D post inner panel 10, and right D post inner panel reinforcing plate 7 sets up between roof rear cross beam inner panel 6 and right D post inner panel 8. Further, the left end of left D post inner panel reinforcing plate 5 links to each other with the upper end of left D post inner panel 10, the right-hand member of left D post inner panel reinforcing plate 5 links to each other with the left end of top cap rear beam inner panel 6, the right-hand member of top cap rear beam inner panel 6 is connected with the left end of right D post inner panel reinforcing plate 7, the right-hand member of right D post inner panel reinforcing plate 7 is connected with the upper end of right D post inner panel 8, the lower extreme of right D post inner panel 8 is connected with the right-hand member of back panel inner panel 9, the left end of back panel inner panel 9 is connected with the lower extreme of left D post inner panel 10.
The door frame outer plate 300 comprises a top cover rear cross beam outer plate 301, a right launder outer plate 302, a rear coaming outer plate 303 and a left launder outer plate 304 which are sequentially connected end to form a rectangular frame. The roof rear cross member outer panel 301 and the back panel outer panel 303 extend in the vehicle width direction, and the right gutter outer panel 302 and the left gutter outer panel 304 extend in the vehicle up-down direction. The upper end of the left launder outer plate 304 is connected with the left end of the top cover rear beam outer plate 301, the right end of the top cover rear beam outer plate 301 is connected with the upper end of the right launder outer plate 302, the lower end of the right launder outer plate 302 is connected with the right end of the rear coaming outer plate 303, and the left end of the rear coaming outer plate 303 is connected with the lower end of the left launder outer plate 304.
The four inner supporting plates comprise a first inner supporting plate 1, a second inner supporting plate 2, a third inner supporting plate 3 and a fourth inner supporting plate 4, and two ends of the first inner supporting plate 1 are respectively connected with a left D column inner plate reinforcing plate 5 and the left end of the top cover rear cross beam outer plate 301; two ends of the second inner supporting plate 2 are respectively connected with the right D-pillar inner plate reinforcing plate 7 and the right end of the top cover rear cross beam outer plate 301; two ends of the third inner supporting plate 3 are respectively connected with the left end of the back panel inner plate 9 and the left end of the back panel outer plate 303; the two ends of the fourth inner supporting plate 4 are respectively connected with the right end of the back panel inner plate 9 and the right end of the back panel outer plate 303.
In this way, the inner frame plate 200 and the outer frame plate 300 are formed in a closed and interconnected ring structure and four inner support plates are disposed at four corners (portions having a large influence on the torsional rigidity) of the inner frame plate 200 and the outer frame plate 300, so that the back door frame constructed by the inner frame plate 200 and the outer frame plate 300 has good structural stability and torsional rigidity.
In the present invention, the first inner support plate 1, the second inner support plate 2, the third inner support plate 3 and the fourth inner support plate 4 may have any suitable structure and shape as long as the stability of the connection between the doorframe inner plate 200 and the doorframe outer plate 300 can be enhanced. In one embodiment, as shown in fig. 3 and 4, the first inner support plate 1 may include a first inner support plate bottom plate 11 and a first inner support plate first flange 12, a first inner support plate second flange 13, a first inner support plate third flange 14 and a first inner support plate fourth flange 15 formed around the first inner support plate bottom plate 11, the first inner support plate first flange 12 and the first inner support plate third flange 14 are formed on two opposite sides of the first inner support plate bottom plate 11 and the first inner support plate first flange 12 and the first inner support plate third flange 14 are folded in opposite directions, the first inner support plate second flange 13 and the first inner support plate fourth flange 15 are formed on the other two opposite sides of the first inner support plate bottom plate 11 and the first inner support plate second flange 13 and the first inner support plate fourth flange 15 are folded in opposite directions, the first inner support plate first flange 12 and the first inner support plate second flange 13 may be connected to the left D-pillar reinforcement plate 5, the first inner support plate first flange 14 and the first inner support plate fourth flange 15 may be connected to the top end plate top plate 11, wherein the top end plate 11 may be connected to the top cross beam 800. Through turning over a first turn-ups 12 of first interior fagging and a first interior fagging third turn-ups 14 towards opposite direction, turn over a first interior fagging second turn-ups 13 and a first interior fagging fourth turn-ups 15 towards opposite direction, be favorable to dodging other spare parts to be convenient for the installation of first interior fagging 1.
As shown in fig. 3 and 4, the second inner support plate 2 may include a second inner support plate bottom plate 21 and a second inner support plate first flange 22, a second inner support plate second flange 23, a second inner support plate third flange 24 and a second inner support plate fourth flange 25 formed around the second inner support plate bottom plate 21, the second inner support plate first flange 22 and the second inner support plate third flange 24 are formed on two opposite sides of the second inner support plate bottom plate 21 and the second inner support plate first flange 22 and the second inner support plate third flange 24 are turned over in opposite directions, the second inner support plate second flange 23 and the second inner support plate fourth flange 25 are formed on the other two opposite sides of the second inner support plate bottom plate 21 and the second inner support plate second flange 23 and the second inner support plate fourth flange 25 are turned over in opposite directions, the second inner support plate first flange 22 and the second inner support plate second flange 23 may be connected to the right D-pillar inner plate reinforcing plate 7, and the second inner support plate third flange 24 and the second inner support plate fourth flange 301 are connected to the top cover cross beam. Wherein, lightening holes 800 can be formed on the second inner supporting plate bottom plate 21. Similarly, the second inner supporting plate second flanging 22 and the second inner supporting plate third flanging 24 are turned over in the opposite direction, and the second inner supporting plate second flanging 23 and the second inner supporting plate fourth flanging 25 are turned over in the opposite direction, so that other parts can be avoided, and the installation of the second inner supporting plate 2 is facilitated.
As shown in fig. 5 and 6, the third inner support plate 3 may include a third inner support plate bottom plate 31 and third inner support plate first flanges 32, third inner support plate second flanges 33, third inner support plate third flanges 34 and third inner support plate fourth flanges 35 formed around the third inner support plate bottom plate 31 and folded in the same direction, the third inner support plate first flanges 32 and third inner support plate third flanges 34 are formed on two opposite sides of the third inner support plate bottom plate 31, the third inner support plate second flanges 33 and third inner support plate fourth flanges 35 are formed on the other two opposite sides of the third inner support plate bottom plate 31, the third inner support plate first flanges 32 and third inner support plate second flanges 33 may be connected to the back panel inner plate 9, the third inner support plate third flanges 34 and third inner support plate fourth flanges 35 may be connected to the back panel outer plate 303, wherein lightening holes 800 may be formed on the third inner support plate bottom plate 31.
As shown in fig. 5 and 6, the fourth inner support plate 4 includes a fourth inner support plate bottom plate 41 and a fourth inner support plate first flange 42, a fourth inner support plate second flange 43, a fourth inner support plate third flange 44 and a fourth inner support plate fourth flange 45 which are formed around the fourth inner support plate bottom plate 41 and are turned over in the same direction, the fourth inner support plate first flange 42 and the fourth inner support plate third flange 45 are formed on two opposite sides of the fourth inner support plate bottom plate 41, the fourth inner support plate second flange 43 and the fourth inner support plate fourth flange 45 are formed on the other two opposite sides of the fourth inner support plate bottom plate 41, the fourth inner support plate first flange 42 and the fourth inner support plate second flange 43 are connected to the back panel inner plate 9, and the fourth inner support plate third flange 44 and the fourth inner support plate fourth flange 45 are connected to the back panel 303. Wherein, the lightening holes 800 may be formed on the fourth inner support plate bottom plate 41.
In the above embodiments, any suitable connection means may be used between the inner stay and the doorframe inner panel 200 and the doorframe outer frame 300. In one embodiment, welding may be used between the first inner support plate 1 and the left D pillar inner plate stiffener 5 and the top cover rear cross beam outer plate 301, between the second inner support plate 2 and the right D pillar inner plate stiffener 7 and the top cover rear cross beam outer plate 301, between the third inner support plate 3 and the back panel inner plate 9 and the back panel outer plate 303, and between the fourth inner support plate 4 and the back panel inner plate 9 and the back panel outer plate 303 to ensure the reliability of the connection.
Further, as shown in fig. 2 to 6, the first inner supporting plate 1 and the second inner supporting plate 2 are left-right symmetrical members, and the third inner supporting plate 3 and the fourth inner supporting plate 4 are left-right symmetrical members, so as to improve the supporting effect of the inner supporting plates.
According to another aspect of the present invention, there is provided a vehicle, as shown in fig. 7, including a roof assembly 400, a right side wall assembly 500, a rear floor assembly 600, and a left side wall assembly 700, the vehicle 1000 further including the above-mentioned back door frame 100, wherein the back door frame 100 is connected to the roof assembly 400, the right side wall assembly 500, the rear floor assembly 600, and the left side wall assembly 700, respectively.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (7)

1. A back door frame is characterized by comprising a door frame inner plate (200), a door frame outer plate (300) and an inner supporting plate, wherein the door frame inner plate (200) is connected with the door frame outer plate (300), an annular cavity is formed between the door frame inner plate (200) and the door frame outer plate (300), and the inner supporting plate is arranged in the annular cavity and is respectively connected with the door frame inner plate (200) and the door frame outer plate (300);
the back door frame (100) is of a rectangular frame structure, and the four inner supporting plates are respectively arranged at four corners of the back door frame (100);
the door frame inner plate (200) comprises a left D column inner plate reinforcing plate (5), a top cover rear cross beam inner plate (6), a right D column inner plate reinforcing plate (7), a right D column inner plate (8), a rear coaming inner plate (9) and a left D column inner plate (10) which are sequentially connected end to form a rectangular frame, the door frame outer plate (300) comprises a top cover rear cross beam outer plate (301), a right launder outer plate (302), a rear coaming outer plate (303) and a left launder outer plate (304) which are sequentially connected end to form the rectangular frame, the four inner bracing plates comprise a first inner bracing plate (1), a second inner bracing plate (2), a third inner bracing plate (3) and a fourth inner bracing plate (4), and two ends of the first inner bracing plate (1) are respectively connected with the left D column inner plate reinforcing plate (5) and the top cover rear cross beam outer plate (301); two ends of the second inner supporting plate (2) are respectively connected with the right D-column inner plate reinforcing plate (7) and the top cover rear cross beam outer plate (301); two ends of the third inner supporting plate (3) are respectively connected with the back panel inner plate (9) and the back panel outer plate (303); two ends of the fourth inner supporting plate (4) are respectively connected with the back panel inner plate (9) and the back panel outer plate (303);
the first inner supporting plate (1) comprises a first inner supporting plate bottom plate (11) and a first inner supporting plate first flanging (12), a first inner supporting plate second flanging (13), a first inner supporting plate third flanging (14) and a first inner supporting plate fourth flanging (15) which are formed on the periphery of the first inner supporting plate bottom plate (11), the first inner supporting plate first flanging (12) and the first inner supporting plate third flanging (14) are formed on two opposite edges of the first inner supporting plate bottom plate (11), the first inner supporting plate first flanging (12) and the first inner supporting plate third flanging (14) are turned over towards opposite directions, the first inner supporting plate second flanging (13) and the first inner supporting plate fourth flanging (15) are formed on the other two opposite edges of the first inner supporting plate bottom plate (11), the first inner supporting plate second flanging (13) and the first inner supporting plate fourth flanging (15) are turned towards opposite directions, the first inner supporting plate inner flanging (12) and the first inner supporting plate second flanging (13) and the first inner supporting plate fourth flanging (15) are connected with a left supporting plate top cross beam (301) and a left supporting plate top cross beam (5).
2. A back door frame according to claim 1, wherein the second inner support plate (2) comprises a second inner support plate bottom plate (21) and a second inner support plate first flange (22), a second inner support plate second flange (23), a second inner support plate third flange (24) and a second inner support plate fourth flange (25) formed around the second inner support plate bottom plate (21), the second inner support plate first flange (22) and the second inner support plate third flange (24) are formed on two opposite sides of the second inner support plate bottom plate (21) and the second inner support plate first flange (22) and the second inner support plate third flange (24) are turned in opposite directions, the second inner support plate second flange (23) and the second inner support plate fourth flange (25) are formed on the other two opposite sides of the second inner support plate bottom plate (21) and the second inner flange (23) and the second inner support plate fourth flange (25) are turned in opposite directions, the second inner flange (23) and the second inner flange (25) are connected to the second inner support plate top (7) and the second inner support plate top reinforcement flange (23) and the second inner support plate top reinforcement flange (25).
3. A back door doorframe according to claim 1, wherein the third inner support plate (3) comprises a third inner support plate bottom plate (31) and a third inner support plate first flange (32), a third inner support plate second flange (33), a third inner support plate third flange (34) and a third inner support plate fourth flange (35) which are formed around the third inner support plate bottom plate (31) and are folded in the same direction, wherein the third inner support plate first flange (32) and the third inner support plate third flange (34) are formed on two opposite sides of the third inner support plate bottom plate (31), the third inner support plate second flange (33) and the third inner support plate fourth flange (35) are formed on the other two opposite sides of the third inner support plate bottom plate (31), the third inner support plate first flange (32) and the third inner support plate second flange (33) are connected to the back inner panel (9), and the third inner support plate (34) and the third inner support plate second flange (35) are connected to the fourth inner panel (303).
4. A back door frame according to claim 1, wherein the fourth inner support plate (4) comprises a fourth inner support plate bottom plate (41) and a fourth inner support plate first flange (42), a fourth inner support plate second flange (43), a fourth inner support plate third flange (44) and a fourth inner support plate fourth flange (45) formed around the fourth inner support plate bottom plate (41) and folded in the same direction, the fourth inner support plate first flange (42) and the fourth inner support plate third flange (44) are formed on two opposite sides of the fourth inner support plate bottom plate (41), the fourth inner support plate second flange (43) and the fourth inner support plate fourth flange (45) are formed on the other two opposite sides of the fourth inner support plate bottom plate (41), the fourth inner support plate first flange (42) and the fourth inner support plate second flange (43) are connected to the back surrounding plate (9), and the fourth inner support plate flange (44) and the fourth inner support plate second flange (45) are connected to the back surrounding plate outer plate (303).
5. A back door frame according to claim 1, wherein the first (1) and second (2) inner support plates are side-to-side symmetric pieces and the third (3) and fourth (4) inner support plates are side-to-side symmetric pieces.
6. A back door frame according to claim 1, wherein the inner support plate is formed with lightening holes (800).
7. A vehicle comprising a roof assembly (400), a right side panel assembly (500), a rear floor assembly (600) and a left side panel assembly (700), the vehicle (1000) further comprising a back door frame (100) as claimed in any of claims 1 to 6, the back door frame (100) being connected to the roof assembly (400), the right side panel assembly (500), the rear floor assembly (600) and the left side panel assembly (700), respectively.
CN201810662628.6A 2018-06-25 2018-06-25 Back door frame and vehicle Active CN110626156B (en)

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Publication number Priority date Publication date Assignee Title
CN111994171B (en) * 2020-09-02 2022-10-21 奇瑞商用车(安徽)有限公司 Frame type tail door frame structure and installation steps thereof
CN114043859B (en) * 2021-12-15 2023-08-01 东风汽车集团股份有限公司 Split type back door back board assembly and back door

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101367409A (en) * 2008-09-27 2009-02-18 重庆长安汽车股份有限公司 Automobile top cover and rear frame member assembly
CN101734288A (en) * 2009-12-29 2010-06-16 湖南湖大三佳汽车技术开发有限公司 White body tail doorframe joint part for minibus
CN203637948U (en) * 2013-12-19 2014-06-11 东风汽车公司 Top cover rear beam assembly
CN203854733U (en) * 2014-03-28 2014-10-01 上海汽车集团股份有限公司 Body-in-white tail support element and vehicle tail reinforcing structure formed by body-in-white tail support element
CN205891000U (en) * 2016-08-15 2017-01-18 东风小康汽车有限公司重庆分公司 Tail portion of vehicle body additional strengthening

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