CN103661624B - A kind of automobile rear apron structure - Google Patents
A kind of automobile rear apron structure Download PDFInfo
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- CN103661624B CN103661624B CN201310741805.7A CN201310741805A CN103661624B CN 103661624 B CN103661624 B CN 103661624B CN 201310741805 A CN201310741805 A CN 201310741805A CN 103661624 B CN103661624 B CN 103661624B
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- rear skirtboard
- skirtboard
- crossbeam
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Abstract
The invention discloses a kind of automobile rear apron structure, comprise rear skirtboard inner panel, rear skirtboard shell plate and rear skirtboard crossbeam, described rear skirtboard inner panel and rear skirtboard shell plate are welded to connect, and form the first closed cavity between, described rear skirtboard crossbeam lower edge is connected with rear skirtboard inner plate welding, upper limb and rear skirtboard shell plate are welded to connect, make to form the second closed cavity between rear skirtboard crossbeam and rear skirtboard inner panel, rear skirtboard shell plate three, and described first closed cavity is positioned at the top of the second closed cavity.This cavity body structure compares apron board structure after orthodox car, its sectional area has a larger increase, improve bending stiffness, the torsional stiffness of rear skirtboard to car load rear portion, enhance the Rigidity and strength of rear skirtboard crossbeam cavity body structure simultaneously, make automobile by the process of knocking into the back, rear skirtboard crossbeam fully can absorb collision energy, has evaded the damaged in collision of fuel tank and has caused fuel leakage risk, improves the safety of car load.
Description
Technical field
The present invention relates to auto Body Technology field, be specifically related to a kind of automobile rear apron structure.
Background technology
Automobile rear apron structure not only to the bending stiffness of car load and torsional stiffness effect comparatively large, in collision process, to the fuel leakage of fuel tank, there is protective effect to automobile simultaneously.In order to improve car load curved, turn round rigidity and better ensure occupant safety, the structure design of automobile rear apron board is had higher requirement.
As Fig. 4, shown in Fig. 5, existing automobile rear apron structure, comprise rear skirtboard inner panel 6, rear skirtboard shell plate 7, rear skirtboard crossbeam 8 and crossbeam attaching parts 9, rear skirtboard inner panel 6 comprises upper right end 61, lower-left curved end 62 and the rectilinear extension from lower-left curved end to downward-extension 63, rear skirtboard shell plate 7 comprises outside plate upper end welding edge 71, outside plate lower end welding edge 72, the upper right end 61 of described outside plate upper end welding edge and rear skirtboard inner panel 6 is welded to connect, outside plate lower end welding edge 72 is welded to connect with the rectilinear extension 63 near inner panel lower-left curved end, like this, the cavity body structure that between rear skirtboard inner panel 6 and rear skirtboard shell plate 7, formation one is closed, the two ends, left and right of rear skirtboard crossbeam 8 are welded to connect with crossbeam attaching parts 9 respectively, form crossbeam assembly structure, crossbeam assembly structure adopts bolt to be connected on the nut of rear skirtboard inner panel 6 by the installation via hole on crossbeam attaching parts 9, finally defines automobile rear apron structure.Because the weld nugget of rear skirtboard shell plate lower end welding edge 72 and inner panel is near curved end 62 position, inner panel lower-left, because the cavity size of after this skirtboard inner panel and the formation of rear skirtboard shell plate is less, simultaneously, skirtboard crossbeam is connected in rear skirtboard inner and outer plates by the crossbeam attaching parts at two ends, middle one-tenth hollow out state, make it less to the raising that is bending, torsional stiffness of car load, there is automobile and to rub in the process of moving the risk of abnormal sound.Simultaneously, skirtboard crossbeam is because being hollow out, open-ended cavity, and automobile is by the process of knocking into the back, and the yielding inefficacy of crossbeam, makes fuel leakage and affect occupant safety.
In sum, design one can improve car load back curve, torsional stiffness, again can at automobile by the process of knocking into the back, absorb energy to greatest extent, guaranteeing that fuel tank is not produced the automobile rear apron structure of fuel leakage by colliding, is the technical matters that those skilled in the art need to solve.
Summary of the invention
For the technical matters that prior art exists, the present invention proposes one and can improve car load back curve, torsional stiffness, at automobile by the process of knocking into the back, energy being absorbed to greatest extent again, guaranteeing that fuel tank is not produced the automobile rear apron structure of fuel leakage by colliding.
The technical solution used in the present invention is as follows: a kind of automobile rear apron structure, comprise rear skirtboard inner panel, rear skirtboard shell plate and rear skirtboard crossbeam, described rear skirtboard inner panel and rear skirtboard shell plate are welded to connect, and form the first closed cavity between, described rear skirtboard crossbeam lower edge is connected with rear skirtboard inner plate welding, upper limb and rear skirtboard shell plate are welded to connect, make to form the second closed cavity between rear skirtboard crossbeam and rear skirtboard inner panel, rear skirtboard shell plate three, and described first closed cavity is positioned at the top of the second closed cavity.
Further, described rear skirtboard shell plate comprises upper weld limit, lower weld limit, and the middle part welding edge between upper weld limit and lower weld limit; Described rear skirtboard inner panel is inverted L-shaped structure, comprises the stile and top horizontal sides that are connected, and end and the rear skirtboard shell plate lower weld limit of stile are welded to connect, and top horizontal sides is provided with the end welding edge be welded to connect with rear skirtboard shell plate upper weld limit; Be provided with extension below stile end, described rear skirtboard crossbeam lower edge and described extension are welded to connect, and the middle part welding edge of upper limb and rear skirtboard shell plate is welded to connect.
Further, the end of described top horizontal sides first oliquely downward outwards turns down and outwards turns down obliquely upward, and the oblique upper linear portion of outwards turnover forms end welding edge.
Further, the cross-sectional plane base portion of described rear skirtboard crossbeam is the U-shaped of accumbency, the end of this U-shaped upper hypotenuse is provided with upper overturning upwards, the upper limb that described upper overturning is formed and in the middle part of rear skirtboard shell plate, welding edge is welded to connect, the end of lower hypotenuse is provided with downward lower flange, described lower flange forms the lower edge be welded to connect with rear skirtboard inner panel stile extension, and this U-shaped vertical straight line connects described upper hypotenuse and lower hypotenuse, and the length of described upper hypotenuse is less than the length of lower hypotenuse.
Further, described rear skirtboard inner panel stile end first outwards turns down turnover straight down again and forms extension, and the vertical straight line end of extension is connected with the lower flanging welded of hypotenuse under described rear skirtboard crossbeam.
Further, the vertical straight line of described rear skirtboard crossbeam is transversely provided with multiple bar hole passed through for welding gun electrode.
Automobile rear apron structure provided by the invention, rear skirtboard inner panel and rear skirtboard shell plate are welded to connect, and form the first closed cavity between, rear skirtboard crossbeam lower edge is connected with rear skirtboard inner plate welding, upper limb and rear skirtboard shell plate are welded to connect, make rear skirtboard crossbeam and rear skirtboard inner panel, the second closed cavity is formed between rear skirtboard shell plate three, and described first closed cavity is positioned at the top of the second closed cavity, this cavity body structure compares apron board structure after orthodox car, its sectional area has a larger increase, improve the bending stiffness of rear skirtboard to car load rear portion, torsional stiffness, enhance the Rigidity and strength of rear skirtboard crossbeam cavity body structure simultaneously, make automobile by the process of knocking into the back, rear skirtboard crossbeam fully can absorb collision energy, evade the damaged in collision of fuel tank and caused fuel leakage risk, improve the safety of car load.
Accompanying drawing explanation
Fig. 1 is automobile rear apron structure schematic diagram provided by the invention;
Fig. 2 is the B-B cutaway view of Fig. 1;
Fig. 3 is rear skirtboard beam structure schematic diagram provided by the invention;
Wherein, rear skirtboard inner panel 1, rear skirtboard shell plate 2, rear skirtboard crossbeam 3, first closed cavity 4, second closed cavity 5, stile 11, top horizontal sides 12, stile end 13, extension 14, end welding edge 15, upper weld limit 21, lower weld limit 22, middle part welding edge 23, upper hypotenuse 31, lower hypotenuse 32, straight line 33, upper overturning 34, lower flange 35.
Fig. 4 is existing automobile rear apron structure schematic diagram;
Fig. 5 is the A-A cutaway view of Fig. 4;
Wherein, rear skirtboard inner panel 6, rear skirtboard shell plate 7, rear skirtboard crossbeam 8, crossbeam attaching parts 9, upper right end 61, lower-left curved end 62, rectilinear extension 63, outside plate upper end welding edge 71, outside plate lower end welding edge 72.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of automobile rear apron structure provided by the invention, comprise rear skirtboard inner panel 1, rear skirtboard shell plate 2 and rear skirtboard crossbeam 3, described rear skirtboard inner panel 1 and rear skirtboard shell plate 2 are welded to connect, and form the first closed cavity 4 between, described rear skirtboard crossbeam 3 lower edge and rear skirtboard inner panel 1 are welded to connect, upper limb and rear skirtboard shell plate 2 are welded to connect, make to form the second closed cavity 5 between rear skirtboard crossbeam 3 and rear skirtboard inner panel 1, rear skirtboard shell plate 2 three, and described first closed cavity is positioned at the top of the second closed cavity.
Automobile rear apron structure provided by the invention, rear skirtboard inner panel and rear skirtboard shell plate are welded to connect, and form the first closed cavity between, rear skirtboard crossbeam lower edge is connected with rear skirtboard inner plate welding, upper limb and rear skirtboard shell plate are welded to connect, make rear skirtboard crossbeam and rear skirtboard inner panel, the second closed cavity is formed between rear skirtboard shell plate three, this cavity body structure compares apron board structure after orthodox car, its sectional area has a larger increase, improve the bending stiffness of rear apron board assembly to car load rear portion, torsional stiffness, enhance the Rigidity and strength of rear skirtboard crossbeam cavity body structure simultaneously, make automobile by the process of knocking into the back, rear skirtboard crossbeam fully can absorb collision energy, evade the damaged in collision of fuel tank and caused fuel leakage risk, finally improve the safety of car load.
As shown in Figure 2, in the automobile rear apron structure that the present invention one specific embodiment provides, described rear skirtboard shell plate 2 comprises upper weld limit 21, lower weld limit 22, and the middle part welding edge 23 between upper weld limit and lower weld limit; Described rear skirtboard inner panel 1 is in inverted L-shaped structure, comprise the stile 11 and top horizontal sides 12 that are connected, end 13 and the rear skirtboard shell plate lower weld limit 22 of stile are welded to connect, and top horizontal sides 12 is provided with the end welding edge 15 be welded to connect with rear skirtboard shell plate upper weld limit; Be provided with extension 14 below stile end 13, described rear skirtboard crossbeam 3 lower edge and described extension 14 are welded to connect, and the middle part welding edge 23 of upper limb and rear skirtboard shell plate is welded to connect.
As shown in Figure 2, rear skirtboard shell plate 2 comprises upper, middle and lower three welding edges, has the connecting portion be made up of straight line and/or curve between middle part welding edge and lower weld limit, and certainly, connecting portion also can adopt other versions, in this no limit.When by rear skirtboard inner panel 1, rear skirtboard shell plate 2, rear skirtboard crossbeam 3 weld together, form a larger closed cavity structure, and the connecting portion between middle part welding edge 23 and lower weld limit 22 is equivalent to reinforced rib, not only play the effect strengthening whole cavity body structure, but also this larger closed cavity structure being divided into the first closed cavity 4 and the second closed cavity 5 arranged up and down, total is closely.And rear skirtboard inner panel 1 is also convenient to processing in inverted L-shaped structure.
In order to improve technique scheme further, the end of described top horizontal sides 12 first oliquely downward outwards turns down and outwards turns down obliquely upward, the oblique upper linear portion of outside turnover forms end welding edge 15, adopt said structure, welding location is convenient, and can also increase the intensity of closed cavity.
As Fig. 2, shown in Fig. 3, in the automobile rear apron structure that the present invention one specific embodiment provides, the cross-sectional plane base portion of described rear skirtboard crossbeam 3 is the U-shaped of accumbency, the end of this U-shaped upper hypotenuse 31 is provided with upper overturning 34 upwards, the upper limb that described upper overturning 34 is formed and in the middle part of rear skirtboard shell plate, welding edge 23 is welded to connect, the end of lower hypotenuse 32 is provided with downward lower flange 35, described lower flange 35 forms the lower edge be welded to connect with rear skirtboard inner panel stile extension 14, this U-shaped vertical straight line 33 connects described upper hypotenuse 31 and lower hypotenuse 32, the length of described upper hypotenuse 31 is less than the length of lower hypotenuse 32.Rear skirtboard crossbeam adopts U-shaped structure, punch process is convenient, the length of upper hypotenuse 31 is less than the length of lower hypotenuse 32, the right part of whole closed cavity structure can be made to be located substantially on a vertical straight line, assembly welding is convenient, and lower hypotenuse 32 is longer, the space of the second closed cavity 5 bottom can be increased, thus improve the intensity of rear skirtboard.
In order to improve technique scheme further, described rear skirtboard inner panel stile end 13 first outwards turns down turnover straight down again and forms extension 14, and the vertical straight line end of extension 14 is connected with the lower flanging welded of hypotenuse under described rear skirtboard crossbeam.Adopt said structure, the space of the second closed cavity 5 bottom can be increased, thus improve the intensity of rear skirtboard.
In order to welding processing is convenient, on the vertical straight line 33 of rear skirtboard crossbeam 3, multiple bar hole 36 passed through for welding gun electrode can be set along crossbeam length direction, rear skirtboard inner panel stile end 13 and rear skirtboard shell plate lower weld limit 22 are welded by bar hole by welding gun electrode.
Automobile rear apron structure provided by the present invention can take following method to carry out assembling assembly welding: first the middle part welding edge 23 of rear skirtboard shell plate 2 is carried out assembly welding with the upper overturning 34 of rear skirtboard crossbeam 3, again the upper weld limit 21 of the rear skirtboard shell plate 2 on group welding piece is welded to connect with the end welding edge 15 in the top horizontal sides 12 of rear skirtboard inner panel 1, the lower flange 35 of rear skirtboard crossbeam 3 is welded to connect with the stile extension 14 of rear skirtboard inner panel 1, finally welding gun is passed through three bar holes 36 on rear skirtboard crossbeam 3, the stile end 13 of rear skirtboard inner panel 1 is welded with the lower weld limit 22 of rear skirtboard shell plate.
Claims (6)
1. an automobile rear apron structure, comprise rear skirtboard inner panel (1), rear skirtboard shell plate (2) and rear skirtboard crossbeam (3), it is characterized in that, described rear skirtboard inner panel (1) and rear skirtboard shell plate (2) are welded to connect, and form the first closed cavity (4) between, described rear skirtboard crossbeam (3) lower edge and rear skirtboard inner panel (1) are welded to connect, upper limb and rear skirtboard shell plate (2) are welded to connect, make rear skirtboard crossbeam (3) and rear skirtboard inner panel (1), the second closed cavity (5) is formed between rear skirtboard shell plate (2) three, and described first closed cavity is positioned at the top of the second closed cavity.
2. automobile rear apron structure according to claim 1, is characterized in that, described rear skirtboard shell plate (2) comprises upper weld limit (21), lower weld limit (22), and the middle part welding edge (23) between upper weld limit and lower weld limit; Described rear skirtboard inner panel (1) is in inverted L-shaped structure, comprise the stile (11) and top horizontal sides (12) that are connected, end (13) and the rear skirtboard shell plate lower weld limit (22) of stile are welded to connect, and top horizontal sides (12) is provided with the end welding edge (15) be welded to connect with rear skirtboard shell plate upper weld limit; Stile end (13) below is provided with extension (14), and described rear skirtboard crossbeam (3) lower edge and described extension (14) are welded to connect, and the middle part welding edge (23) of upper limb and rear skirtboard shell plate is welded to connect.
3. automobile rear apron structure according to claim 2, is characterized in that, the end at described top horizontal sides (12) first oliquely downward outwards turns down and outwards turns down obliquely upward, and the oblique upper linear portion of outwards turnover forms end welding edge (15).
4. automobile rear apron structure according to claim 2, it is characterized in that, the cross-sectional plane base portion of described rear skirtboard crossbeam (3) is the U-shaped of accumbency, the end of this U-shaped upper hypotenuse (31) is provided with upper overturning (34) upwards, the upper limb that described upper overturning (34) is formed and in the middle part of rear skirtboard shell plate, welding edge (23) is welded to connect, the end of lower hypotenuse (32) is provided with downward lower flange (35), described lower flange (35) forms the lower edge be welded to connect with rear skirtboard inner panel stile extension (14), this U-shaped vertical straight line (33) connects described upper hypotenuse (31) and lower hypotenuse (32), the length of described upper hypotenuse (31) is less than the length of lower hypotenuse (32).
5. automobile rear apron structure according to claim 4, it is characterized in that, described rear skirtboard inner panel stile end (13) first outwards turnover again turnover straight down form extension (14), under the vertical straight line end of extension and described rear skirtboard crossbeam, the lower flange (35) of hypotenuse is welded to connect.
6. the automobile rear apron structure according to claim 4 or 5, is characterized in that, the vertical straight line (33) of described rear skirtboard crossbeam (3) is provided with multiple bar hole (36) passed through for welding gun electrode along crossbeam length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310741805.7A CN103661624B (en) | 2013-12-30 | 2013-12-30 | A kind of automobile rear apron structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310741805.7A CN103661624B (en) | 2013-12-30 | 2013-12-30 | A kind of automobile rear apron structure |
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| Publication Number | Publication Date |
|---|---|
| CN103661624A CN103661624A (en) | 2014-03-26 |
| CN103661624B true CN103661624B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310741805.7A Active CN103661624B (en) | 2013-12-30 | 2013-12-30 | A kind of automobile rear apron structure |
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| CN (1) | CN103661624B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112874633B (en) * | 2021-03-19 | 2022-10-11 | 重庆长安汽车股份有限公司 | Rear frame connecting piece and mounting structure thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06344949A (en) * | 1993-06-02 | 1994-12-20 | Suzuki Motor Corp | Rear part car body structure of automobile |
| KR20010060865A (en) * | 1999-12-28 | 2001-07-07 | 이계안 | Rigidity structure of back panel section of vehicle |
| CN202213635U (en) * | 2011-07-22 | 2012-05-09 | 浙江吉利汽车研究院有限公司 | Pre-positioning installing structure of back panel |
| CN203637951U (en) * | 2013-12-30 | 2014-06-11 | 重庆长安汽车股份有限公司 | Automobile rear skirt plate assembly |
-
2013
- 2013-12-30 CN CN201310741805.7A patent/CN103661624B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06344949A (en) * | 1993-06-02 | 1994-12-20 | Suzuki Motor Corp | Rear part car body structure of automobile |
| KR20010060865A (en) * | 1999-12-28 | 2001-07-07 | 이계안 | Rigidity structure of back panel section of vehicle |
| CN202213635U (en) * | 2011-07-22 | 2012-05-09 | 浙江吉利汽车研究院有限公司 | Pre-positioning installing structure of back panel |
| CN203637951U (en) * | 2013-12-30 | 2014-06-11 | 重庆长安汽车股份有限公司 | Automobile rear skirt plate assembly |
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| Publication number | Publication date |
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| CN103661624A (en) | 2014-03-26 |
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