CN101704385B - Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile - Google Patents
Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile Download PDFInfo
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- CN101704385B CN101704385B CN2009101913529A CN200910191352A CN101704385B CN 101704385 B CN101704385 B CN 101704385B CN 2009101913529 A CN2009101913529 A CN 2009101913529A CN 200910191352 A CN200910191352 A CN 200910191352A CN 101704385 B CN101704385 B CN 101704385B
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- side member
- reinforcement
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- connecting panel
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Abstract
The invention discloses a connecting structure of a front longitudinal beam and a front floor longitudinal beam of an automobile, which comprises the front longitudinal beam, a connecting plate and the front floor longitudinal beam which are welded in turn; and the front part of a connecting plate reinforcing groove is lapped with the tail of the front longitudinal beam, while the rear part is lapped with a groove-shaped front floor longitudinal beam. The connecting structure is characterized in that: the groove on the lapped part of the front longitudinal beam and the connecting plate is welded with a root reinforced piece; groove-shaped floor beam reinforcing pieces are overlapped on the rear part of the groove back of the connecting plate reinforcing groove; the rear parts of the groove-shaped floor beam reinforcing pieces are overlapped and lapped with the groove back of the front floor longitudinal beam; and the lateral surface of the tail of the front longitudinal beam is welded with strip shield-shaped floor beam front end reinforcing pieces of which the rear parts are welded with the connecting plate reinforcing groove and the outer side wall of the front floor longitudinal beam groove. The connecting structure can make the front longitudinal beam and the front floor longitudinal beam of the automobile connected firmly; and the capacity of the connecting structure of bearing impact load is improved, and the connecting part cannot be broken and scattered even if the connecting structure bears large impact load.
Description
Technical field
The present invention relates to automotive body structure, more particularly relate to the connection structure of a kind of automobile front side member and preceding longitudinal floor beam.
Background technology
When automobile meets accident when collision, require auto body that good energy-absorbing effect can be arranged, guarantee driver and crew's living space to greatest extent, and the distortion that as far as possible reduces operator's compartment is the most basic requirement.The automobile front side member is positioned at the front portion of car body both sides; It is the major part that makes up cabin and load; Bearing the vehicle body longitudinal force and longitudinal force passed to miscellaneous part such as floor, front side member absorb through torsional deflection, in the attenuate shock energy, a part of power also can be delivered to floor bearer.Preceding longitudinal floor beam and front side member are through the welding of connecting panel overlap joint, and a side of connecting panel is the strengthening groove that extends along the vehicle body fore-and-aft direction, and the notch of strengthening groove makes progress; The front end of connecting panel strengthening groove and front side member afterbody overlap joint, longitudinal floor beam overlap joint before rear end and the flute profile is because the three is through being welded to connect; Become weak area in the junction, when withstanding shocks load, fracture easily; Out of reach actv. energy-absorbing effect causes the injury to the occupant.
Summary of the invention
Technical matters to be solved by this invention is: the connection structure of a kind of automobile front side member and preceding longitudinal floor beam is provided, and it is firm that the automobile front side member is connected with preceding longitudinal floor beam, improves the ability of its load that withstands shocks.
Technical scheme of the present invention is following: the connection structure of a kind of automobile front side member and preceding longitudinal floor beam; The front side member, connecting panel and the preceding longitudinal floor beam that comprise welding successively, a side of said connecting panel are the connecting panel strengthening groove that extends along the vehicle body fore-and-aft direction, and its notch upwards; The front portion of connecting panel strengthening groove and front side member afterbody overlap joint; The preceding longitudinal floor beam overlap joint of rear portion and flute profile, its key be, is welded with the root reinforcement in the groove of overlapping part mutually at said front side member and connecting panel; Be stacked with the floor bearer reinforcement of flute profile at the rear portion of the said connecting panel strengthening groove groove back of the body, the rear portion of this floor bearer reinforcement and the mutually stacked overlap joint of the groove of the preceding longitudinal floor beam back of the body; Be welded with rectangular hood-shaped floor bearer front end reinforcement in the side of said front side member afterbody, weld with the groove lateral wall of said connecting panel strengthening groove and floor bearer reinforcement mutually at the rear portion of this floor bearer front end reinforcement.
The present invention adds root of weld portion reinforcement and floor bearer reinforcement in the junction of front side member, connecting panel and preceding longitudinal floor beam; And through floor bearer front end reinforcement with floor bearer reinforcement, connecting panel and front side member connection reinforcing once more; The reinforcement intensity of flute profile and hood-shaped structure is higher; The automobile front side member can be connected with preceding longitudinal floor beam securely,, fracture, defeated and dispersed also can not occur at connecting portion even bear bigger impact load; Thereby make the body bottom section framework effectively absorb impact energy, reduce or avoid injury the occupant.
In order to strengthen the front side member afterbody; Make front side member more reliable with being connected of connecting panel; The afterbody of said front side member is and the bending flange of said connecting panel strengthening groove bottom land overlap joint on this bending flange, to be welded with lower reinforcing plate, the front portion of said root reinforcement and the welding of this lower reinforcing plate.
For strengthening the root reinforcement, said root reinforcement is a bathtub construction, and the shape of its shape and front side member afterbody and connecting panel overlapping part is suitable.
Further, said floor bearer reinforcement is the step trough that the middle part is pressed with positioning step, its notch outward flanging, this flange and bridge piece welding mutually.The groove inner chamber of the forward and backward side of positioning step varies in size, so that paste right mutually with the groove back of the body of connecting panel strengthening groove and preceding longitudinal floor beam.
Further, the cover mouth edge outward flanging of said floor bearer front end reinforcement forms the cover edge, the binding face welding of this cover edge and adjacent elements.
Further, for the front portion of longitudinal floor beam before strengthening, the front portion before said flute profile in the longitudinal floor beam groove is welded with the preceding longitudinal floor beam brace panel of flute profile, and the notch of this brace panel is provided with the overlap joint flange, on cell wall and bottom land, is pressed with reinforced rib.
Further, said root reinforcement, floor bearer reinforcement and floor bearer front end reinforcement are plate stamping spare, and its wall thickness is 2.5～3mm.
The invention has the beneficial effects as follows: it is firm that the automobile front side member is connected with preceding longitudinal floor beam; Improve its load that withstands shocks with ability; Even bear bigger impact load; Fracture, defeated and dispersed can not appear in connecting portion yet, thereby makes the body bottom section framework effectively absorb impact energy, reduces or avoids the injury to the occupant.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cutaway view of Fig. 1.
Fig. 3 is among Fig. 2, the front view of root reinforcement.
Fig. 4 is the right elevation of Fig. 3.
Fig. 5 is among Fig. 1, the birds-eye view of floor bearer reinforcement.
Fig. 6 is the F-F cutaway view of Fig. 5.
Fig. 7 is the B-B cutaway view of Fig. 1.
Fig. 8 is the C-C cutaway view of Fig. 1.
Fig. 9 is the D-D cutaway view of Fig. 1.
Figure 10 is the E-E cutaway view of Fig. 1.
Figure 11 is a schematic perspective view of the present invention.
Figure 12 is that the G of Figure 11 is to view.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Like Fig. 1, Fig. 2, Figure 11 and shown in Figure 12; The present invention is the connection structure of a kind of automobile front side member and preceding longitudinal floor beam, mainly is made up of front side member 1, connecting panel 2, preceding longitudinal floor beam 3, root reinforcement 4, floor bearer reinforcement 5, floor bearer front end reinforcement 6, lower reinforcing plate 7 and preceding longitudinal floor beam brace panel 8.Wherein front side member 1, connecting panel 2 and preceding longitudinal floor beam 3 overlap welding successively; One side of connecting panel 2 is the connecting panel strengthening groove 2a that extends along the vehicle body fore-and-aft direction; Its notch makes progress, the front portion of connecting panel strengthening groove 2a and front side member 1 afterbody overlap joint, the preceding longitudinal floor beam 3 stacked overlap joints of rear portion and flute profile.The bending flange 1a that the afterbody of front side member 1 is and connecting panel strengthening groove 2a bottom land overlaps is welded with lower reinforcing plate 7 (like Fig. 7 and shown in Figure 9) on this bending flange 1a, the front portion overlap joint of connecting panel strengthening groove 2a is on lower reinforcing plate 7.Like Fig. 2, Fig. 3, Fig. 4 and shown in Figure 11; Be welded with root reinforcement 4 in the groove of overlapping part mutually at front side member 1 and connecting panel 2; Root reinforcement 4 is the blanked part of bathtub construction, and thickness of slab is 2.5mm, the suitable welding of shape of it and front side member 1 afterbody and connecting panel 2 overlapping parts.Can see from Fig. 7 and Fig. 8, lower reinforcing plate 7 welding of the front portion of root reinforcement 4 and front side member 1 afterbody, the connecting portion of front side member 1 and connecting panel 2 is reinforced in the rear portion of root reinforcement 4 and connecting panel strengthening groove 2a welding.
Like Fig. 1, Figure 10 and shown in Figure 12; Be stacked with the floor bearer reinforcement 5 of flute profile at the rear portion of the connecting panel strengthening groove 2a groove back of the body; The front portion of floor bearer reinforcement 5 and connecting panel strengthening groove 2a overlap joint; Mutually stacked overlap joint is carried on the back with the groove of preceding longitudinal floor beam 3 in the rear portion, and connecting panel strengthening groove 2a reinforces the connecting portion of floor bearer reinforcement 5 and preceding longitudinal floor beam 3.Like Fig. 5, Fig. 6; Floor bearer reinforcement 5 is the step troughs by the plate stamping moulding, and the center is pressed with positioning step 5a, and the groove inner chamber of positioning step 5a front side is bigger; And paste right mutually with the groove back of the body of connecting panel strengthening groove 2a; Because preceding longitudinal floor beam 3 is to overlap in connecting panel strengthening groove 2a groove, thereby the groove inner chamber of positioning step 5a rear side is less, thereby paste right mutually with the groove back of the body of preceding longitudinal floor beam 3.The wall thickness of floor bearer reinforcement 5 is 2.5mm, its notch outward flanging 5b, this flange 5b and bridge piece welding mutually.Like Fig. 2 and shown in Figure 11, the front portion for longitudinal floor beam 3 before strengthening in the front groove of plate longeron 3, is welded with the preceding longitudinal floor beam brace panel 8 of flute profile previously, and the notch of this brace panel is provided with overlap joint flange 8a, all is pressed with reinforced rib 8b on cell wall and the bottom land.
Like Fig. 1, Fig. 2, Fig. 7-9; Figure 11, shown in Figure 12; Be welded with rectangular hood-shaped floor bearer front end reinforcement 6 in the side of front side member 1 afterbody; Weld with the groove lateral wall of connecting panel strengthening groove 2a and floor bearer reinforcement 5 mutually at the rear portion of this floor bearer front end reinforcement 6, and floor bearer front end reinforcement 6 is connected with floor bearer reinforcement 5, connecting panel 2 and front side member 1 simultaneously, and each connecting portion is reinforced once more.Floor bearer front end reinforcement 6 also is a plate stamping spare, and its wall thickness is 2.5mm, and its cover mouthful edge outward flanging forms cover along 6a, and this cover is along the binding face welding of 6a and adjacent elements.As shown in Figure 9, the downside cover of floor bearer front end reinforcement 6 front portions is along 6a, and with the lower reinforcing plate 7 applying welding on the front side member 1 afterbody bending flange 1a, floor bearer front end reinforcement 6 upside cover herein welds (show among the wheel cover figure and draw) mutually along 6a with wheel cover; Fig. 7 shows the leading portion of floor bearer front end reinforcement 6 and root reinforcement 4 junctions; The downside cover of floor bearer front end reinforcement 6 is fitted along the lower reinforcing plate on 6a and the front side member 1 afterbody bending flange 1a 7 and is welded, and the upside cover is along the lateral wall applying welding of 6a and root reinforcement 4; Fig. 8 shows the back segment of floor bearer front end reinforcement 6 and root reinforcement 4 junctions; Floor bearer front end reinforcement 6 downside cover herein is along the afterbody welding of 6a and front side member 1; The upside cover then welds with the lateral wall of connecting panel strengthening groove 2a along 6a mutually, is the root reinforcement 4 of overlap joint in connecting panel strengthening groove 2a.
Like this; Through of the reinforcement of three reinforcements in each junction; The automobile front side member is just considerably solid and reliable with being connected of preceding longitudinal floor beam, even bear bigger impact load, fracture, defeated and dispersed also can not occur at connecting portion; Thereby make the body bottom section framework effectively absorb impact energy, reduce or avoid injury the occupant.
Claims (7)
1. the connection structure of an automobile front side member and preceding longitudinal floor beam; The front side member (1), connecting panel (2) and the preceding longitudinal floor beam (3) that comprise welding successively; One side of said connecting panel (2) is the connecting panel strengthening groove (2a) that extends along the vehicle body fore-and-aft direction; Its notch upwards; The front portion of connecting panel strengthening groove (2a) and front side member (1) afterbody overlap joint, the preceding longitudinal floor beam (3) of rear portion and flute profile overlaps, and it is characterized in that: be welded with root reinforcement (4) in the groove of overlapping part mutually at said front side member (1) and connecting panel (2); Be stacked with the floor bearer reinforcement (5) of flute profile at the rear portion of said connecting panel strengthening groove (2a) the groove back of the body, mutually stacked overlap joint is carried on the back with the groove of preceding longitudinal floor beam (3) in the rear portion of this floor bearer reinforcement (5); Be welded with rectangular hood-shaped floor bearer front end reinforcement (6) in the side of said front side member (1) afterbody, weld with the groove lateral wall of said connecting panel strengthening groove (2a) and floor bearer reinforcement (5) mutually at the rear portion of this floor bearer front end reinforcement (6).
2. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam; It is characterized in that: the afterbody of said front side member (1) is the bending flange (1a) that overlaps with said connecting panel strengthening groove (2a) bottom land; On this bending flange (1a), be welded with lower reinforcing plate (7), the front portion of said root reinforcement (4) and this lower reinforcing plate (7) welding.
3. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam is characterized in that: said root reinforcement (4) is a bathtub construction, and the shape of its shape and front side member (1) afterbody and connecting panel (2) overlapping part is suitable.
4. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam; It is characterized in that: said floor bearer reinforcement (5) is pressed with the step trough of positioning step (5a) for the middle part; Its notch outward flanging (5b), this flange (5b) and bridge piece welding mutually.
5. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam is characterized in that: the cover mouth edge outward flanging of said floor bearer front end reinforcement (6) forms cover along (6a), and this cover is along (6a) the binding face welding with adjacent elements.
6. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam; It is characterized in that: the front portion in longitudinal floor beam before said flute profile (3) groove; Be welded with the preceding longitudinal floor beam brace panel (8) of flute profile; The notch of this brace panel is provided with overlap joint flange (8a), on cell wall and bottom land, is pressed with reinforced rib (8b).
7. the connection structure of a kind of automobile front side member according to claim 1 and preceding longitudinal floor beam is characterized in that: said root reinforcement (4), floor bearer reinforcement (5) and floor bearer front end reinforcement (6) are plate stamping spare, and its wall thickness is 2.5～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101913529A CN101704385B (en) | 2009-11-06 | 2009-11-06 | Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101913529A CN101704385B (en) | 2009-11-06 | 2009-11-06 | Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101704385A CN101704385A (en) | 2010-05-12 |
| CN101704385B true CN101704385B (en) | 2012-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101913529A Expired - Fee Related CN101704385B (en) | 2009-11-06 | 2009-11-06 | Connecting structure of front longitudinal beam and front floor longitudinal beam of automobile |
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| Country | Link |
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| CN (1) | CN101704385B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267492B (en) * | 2011-05-12 | 2012-10-31 | 力帆实业(集团)股份有限公司 | Automobile longitudinal beam structure |
| CN104843085A (en) * | 2014-12-20 | 2015-08-19 | 北汽福田汽车股份有限公司 | Vehicle and connecting device thereof |
| CN105292260B (en) * | 2015-11-03 | 2018-03-30 | 北汽银翔汽车有限公司 | A kind of automobile front longitudinal beam reinforcement structure |
| CN105966470B (en) * | 2016-07-28 | 2017-12-29 | 重庆长安汽车股份有限公司 | The attachment structure and automobile of a kind of longitudinal beams of engine cabin and preceding longitudinal floor beam |
| CN109278865B (en) * | 2018-08-21 | 2022-01-07 | 新程汽车工业有限公司 | Car body high-strength front longitudinal beam reinforcing plate assembly |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571639Y (en) * | 2002-09-24 | 2003-09-10 | 安徽江淮汽车底盘股份有限公司 | Vehicle frame assembly with low wooden floor chassis of passenger car |
| CN1803515A (en) * | 2006-01-19 | 2006-07-19 | 安徽江淮汽车股份有限公司 | Chassis frame structure |
| CN201553199U (en) * | 2009-11-06 | 2010-08-18 | 力帆实业(集团)股份有限公司 | Connecting structure of automobile front longitudinal beam and front floor longitudinal beam |
-
2009
- 2009-11-06 CN CN2009101913529A patent/CN101704385B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571639Y (en) * | 2002-09-24 | 2003-09-10 | 安徽江淮汽车底盘股份有限公司 | Vehicle frame assembly with low wooden floor chassis of passenger car |
| CN1803515A (en) * | 2006-01-19 | 2006-07-19 | 安徽江淮汽车股份有限公司 | Chassis frame structure |
| CN201553199U (en) * | 2009-11-06 | 2010-08-18 | 力帆实业(集团)股份有限公司 | Connecting structure of automobile front longitudinal beam and front floor longitudinal beam |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-68735A 2008.03.27 |
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| CN101704385A (en) | 2010-05-12 |
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Granted publication date: 20120822 Termination date: 20191106 |
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