CN113371071A - Engine compartment boundary beam structure - Google Patents
Engine compartment boundary beam structure Download PDFInfo
- Publication number
- CN113371071A CN113371071A CN202110745484.2A CN202110745484A CN113371071A CN 113371071 A CN113371071 A CN 113371071A CN 202110745484 A CN202110745484 A CN 202110745484A CN 113371071 A CN113371071 A CN 113371071A
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- China
- Prior art keywords
- engine compartment
- plate
- side wall
- boundary beam
- support plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/082—Engine compartments
Abstract
The invention relates to an engine compartment boundary beam structure, which comprises an engine compartment boundary beam front section, an engine compartment boundary beam front section outer plate, a front wheel cover and a front support plate, wherein the front support plate comprises an outer side wall, a front side wall with an outer edge connected with the front edge of the outer side wall and a rear side wall with an outer edge connected with the rear edge of the outer side wall, the lower part of the front support plate is lapped on the outer side of the engine compartment boundary beam front section outer plate, the upper part of the front support plate is lapped on the outer side of the front part of the front wheel cover, a first cavity is defined between the lower part of the front support plate and the engine compartment boundary beam front section outer plate, a front support plate reinforcing member is arranged in the first cavity, the front support plate reinforcing member is integrally arranged in an inclined mode from front to rear, the front end part of the front support plate reinforcing member is lapped on the front side wall, and the rear end part of the front support plate reinforcing member is lapped on the engine compartment boundary beam front section outer plate. The invention can reduce the deformation degree of the automobile in 25% offset collision and has the advantages of simple structure, reliable performance and high light weight degree.
Description
Technical Field
The invention relates to automobile parts, in particular to an engine compartment boundary beam structure.
Background
With the development of the automobile industry, the automobile safety performance is more and more emphasized, and the 25% offset collision is considered by the industry to be one of the most severe automobile collision tests at present. The 25% offset collision is called as the collision of a front rigid barrier with the coverage of 25% being 64km/h, the forces of force transmission and energy absorption are mainly different by taking an engine compartment boundary beam as a main force transmission path and an energy absorption path in the collision processes of the front collision, the 40% offset collision and the like, and the barrier and the engine compartment boundary beam are overlapped less in the 25% offset collision process, so that the engine compartment boundary beam cannot disperse collision load and absorb collision energy, the automobile is seriously deformed, and the injury probability of passengers is increased.
Disclosure of Invention
The object of the present invention is to provide an engine compartment side rail structure to reduce the degree of deformation of an automobile in a 25% offset collision.
The invention relates to an engine compartment boundary beam structure, which comprises an engine compartment boundary beam front section, an engine compartment boundary beam front outer plate lapped on the outer side of the engine compartment boundary beam front section, a front wheel cover lapped on the upper side of the engine compartment boundary beam front outer plate, and a front support plate with a U-shaped cross section, wherein the front support plate comprises an outer side wall, a front side wall of which the outer edge is connected with the front edge of the outer side wall, and a rear side wall of which the outer edge is connected with the rear edge of the outer side wall, the lower part of the front support plate is lapped on the outer side of the engine compartment boundary beam front outer plate, the upper part of the front support plate is lapped on the outer side of the front part of the front wheel cover, a first cavity is defined between the lower part of the front support plate and the engine compartment boundary beam front outer plate, a front support plate reinforcing piece is arranged in the first cavity, and the front support plate reinforcing piece is integrally arranged in an inclined way from front to rear, the front end of the front support plate reinforcement is lapped on the front side wall, and the rear end of the front support plate reinforcement is lapped on the outer plate in the front of the side beam of the engine compartment.
Furthermore, a supporting plate is lapped on the inner side of the outer plate at the front part of the engine compartment boundary beam, the lapping position of the supporting plate corresponds to the position of the rear end part of the front supporting plate reinforcing part, and the supporting plate is lapped with the front section of the engine compartment boundary beam.
Further, the front support plate reinforcement comprises a reinforcement body which is inclined from the front to the back to the inner side, a first lap-joint flange which is turned over outwards from the front edge of the reinforcement body, and a second lap-joint flange which is turned over backwards from the rear edge of the reinforcement body, wherein the first lap-joint flange is overlapped and lapped on the front side wall, and the second lap-joint flange is overlapped and lapped on the outer plate in the front part of the side beam of the engine compartment.
The first lap-joint flanging and the second lap-joint flanging are arranged in a staggered mode, the first lap-joint flanging and the second lap-joint flanging are arranged on the front end of the reinforcing steel pipe, the reinforcing steel pipe is arranged between the first lap-joint flanging and the second lap-joint flanging, the front end of the reinforcing.
Furthermore, two reinforced steel pipes are connected between the first lap-joint flanging and the second lap-joint flanging.
Furthermore, the included angle between the central axis of the reinforced steel pipe and the outer plate at the front part of the side beam of the engine compartment is an acute angle.
Further, still include down the tip with the lapped wheel casing reinforcing plate and the preceding tip of the upper end of preceding backup pad with the connecting plate before the lapped side wall of the upper end of wheel casing reinforcing plate, the upper portion overlap joint of preceding backup pad is in the outside of the front edge of preceding wheel casing, the connecting plate overlap joint is in before the side wall the outside of the upper edge of preceding wheel casing, the wheel casing reinforcing plate overlap joint is in be located on the preceding wheel casing the upper end of preceding backup pad with the outside of the edge between the front end of connecting plate before the side wall.
Furthermore, a second cavity is enclosed between the upper part of the front supporting plate and the front wheel cover, a third cavity is enclosed between the wheel cover reinforcing plate and the front wheel cover, and a fourth cavity is enclosed between the side wall front connecting plate and the front wheel cover.
The invention can reduce the deformation degree of the automobile in 25% offset collision and has the advantages of simple structure, reliable performance and high light weight degree.
Drawings
FIG. 1 is a schematic illustration of an engine nacelle side sill structure according to an embodiment;
FIG. 2 is a schematic connection diagram of a front support plate, a front support plate reinforcement and a reinforced steel pipe in the embodiment;
FIG. 3 is a schematic view showing the connection of the front outer plate, the front stay reinforcement, the reinforcing steel pipe and the stay of the side sill of the engine compartment according to the embodiment;
FIG. 4 is a schematic illustration of the force transfer path of an engine nacelle side sill structure according to an embodiment;
FIG. 5 is a schematic view showing the connection of the front section of the side sill of the engine compartment, the front outer panel of the side sill of the engine compartment, the front support panel reinforcement, the reinforcing steel pipe, and the support panel according to the embodiment.
In the figure: 1-front supporting plate; 2-wheel casing reinforcing plate; 3-side wall front connecting plate; 4, front section of the engine compartment boundary beam; 5-rear section of front wheel cover; 6-front wheel cover front section; 7-engine compartment boundary beam front outer plate; 8, lightening holes; 9-reinforcing ribs; 10-an outer side wall; 11 — front side wall; 12 — rear side wall; 13-a reinforcement body; 14-first lap-joint flanging; 15-second lap-joint flanging; 16-reinforcing the steel pipe; 17-bracing plate.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1 to 5, an engine room side beam structure comprises an engine room side beam front section 4, an engine room side beam front section outer plate 7 lapped on the outer side of the engine room side beam front section 4, a front wheel cover lapped on the upper side of the engine room side beam front section outer plate 7, and a front support plate 1 with a U-shaped cross section, wherein the front support plate 1 comprises an outer side wall 10, a front side wall 11 with an outer edge connected with the front edge of the outer side wall 10, and a rear side wall 12 with an outer edge connected with the rear edge of the outer side wall 10, the lower part of the front support plate 1 is lapped on the outer side of the engine room side beam front section outer plate 7, the upper part of the front support plate 1 is lapped on the outer side of the front part of the front wheel cover, a first cavity is defined between the lower part of the front support plate 1 and the engine room side beam front section outer plate 7, a front support plate reinforcement is arranged in the first cavity, and is arranged obliquely from the front to the rear, the front end of the front gusset reinforcement is lapped over the front side wall 11, and the rear end of the front gusset reinforcement is lapped over the front outer panel 7 of the side sill of the engine compartment. In this embodiment, the front wheel cover is formed by splicing a front wheel cover rear section 5 and a front wheel cover front section 6.
In the present embodiment, the front gusset reinforcement includes a reinforcement body 13 inclined from front to rear to inside, a first lap cuff 14 folded over from the front edge of the reinforcement body 13 to outside, and a second lap cuff 15 folded over from the rear edge of the reinforcement body 13 to back, the first lap cuff 14 being superposed on and by overlapping the front side wall 11, and the second lap cuff 15 being superposed on and overlapping the engine compartment side sill front outer panel 7.
In this embodiment, still include the reinforcing steel pipe 16 that supports between first overlap turn-ups 14 and second overlap turn-ups 15, reinforcing steel pipe 16 sets up to inboard slope after the past, and reinforcing steel pipe 16's front end is through linking to each other with first overlap turn-ups 14, and reinforcing steel pipe 16's rear end links to each other with second overlap turn-ups 15.
In this embodiment, two reinforcing steel pipes 16 are connected between the first lap cuff 14 and the second lap cuff 15. The front support plate reinforcer and the reinforced steel pipe 16 reinforce the local frame of the front support plate 1, the structural stability is ensured, the deformation caused by collision force and energy can be better resisted when the automobile collides, and the force and the energy generated by collision are transmitted to the front section 4 of the boundary beam of the engine compartment through the front support plate reinforcer and the reinforced steel pipe 16 when the automobile collides, so that the boundary beam of the engine compartment participates in the whole collision process, the boundary beam of the engine compartment becomes a force transmission path, the force and the collision energy generated by collision are transmitted, thereby the small offset collision performance is effectively improved, the deformation of the passenger compartment can be reduced, and the possibility of injury to passengers can be reduced.
In the present embodiment, the angle a between the center axis of the reinforcing steel pipe 16 and the front side member outer panel 7 is an acute angle, which is advantageous in transmitting the force and energy generated by the collision to the front side member outer panel 7 through the reinforcing steel pipe 16.
In the present embodiment, the gusset 17 is lapped on the inner side of the front outer panel 7 of the engine room side sill at a position corresponding to the rear end portion of the front gusset reinforcement, and the gusset 17 is lapped on the front section 4 of the engine room side sill. When the automobile collides, the force generated by the collision is transmitted to the front outer plate 7 of the engine compartment boundary beam through the front supporting plate reinforcer and the reinforced steel pipe 16, the supporting plate 17 can effectively prevent the front outer plate 7 of the engine compartment boundary beam from being damaged under the impact of the collision force and energy, and then the force and the energy generated by the collision are transmitted to the front section 4 of the engine compartment boundary beam better, so that the engine compartment boundary beam can better participate in the whole collision process.
In this embodiment, the front wheel cover further comprises a wheel cover reinforcing plate 2 with a lower end part lapped with the upper end part of the front support plate 1 and a side wall front connecting plate 3 with a front end part lapped with the upper end part of the wheel cover reinforcing plate 2, the upper part of the front support plate 1 is lapped outside the front edge of the front wheel cover, the side wall front connecting plate 3 is lapped outside the upper edge of the front wheel cover, and the wheel cover reinforcing plate 2 is lapped outside the edge between the upper end part of the front support plate 1 and the front end part of the side wall front connecting plate 3 on the front wheel cover. Furthermore, a second cavity is defined between the upper part of the front support plate 1 and the front wheel cover, a third cavity is defined between the wheel cover reinforcing plate 2 and the front wheel cover, and a fourth cavity is defined between the side wall front connecting plate 3 and the front wheel cover. A cavity reinforcing structure is formed by enclosing a first cavity, a second cavity, a third cavity and a fourth cavity, a stable cavity structure is further formed to transmit and absorb force and energy brought by automobile collision, and a force transmission path is formed by the front support plate 1, the wheel cover reinforcing plate 2 and the side wall front connecting plate 3. As shown by arrows in FIG. 4, two upper and lower force transmission paths are finally formed, so that the 25% offset collision performance of the vehicle is effectively improved, the deformation of the passenger compartment can be reduced, and the possibility of injury to passengers can be reduced.
In the present embodiment, the overlapping and the connection may be, but is not limited to, achieved by welding, including, but not limited to, a shielded welding connection and a spot welding, for example, the overlapping may be achieved by welding between the front support panel 1 and the front outer panel 7 of the engine compartment side rail, and flanges may be provided on both left and right sides of the front support panel 1, and the flanges may be overlapped with and welded to the front outer panel 7 of the engine compartment side rail to overlap the front support panel 1 on the front outer panel 7 of the engine compartment side rail. Further, the flanges of the front support panel 1, the front outer panel 7 of the engine compartment side rail, and the front section 4 of the engine compartment side rail can be superposed and overlapped to form a lap joint structure having a greater strength.
When the device is specifically implemented, the front support plate 1, the wheel cover reinforcing plate 2 and the side wall front connecting plate 3 are all formed by punching high-strength steel plates, so that the material thickness of parts is reduced under the condition of ensuring the performance requirements of the parts, and the lightweight design is also taken into consideration. The reinforced steel pipe 16, the front supporting plate reinforcement, the front outer plate 7 of the engine compartment boundary beam, the front section 4 of the engine compartment boundary beam and the supporting plates 17 are all made of high-strength materials, and the lightweight level is improved while the collision performance is improved.
As an improvement, three lightening holes 8 can be formed in the side wall front connecting plate 3, and the weight of the part is further reduced under the condition that the strength of the part is ensured.
As an improvement, two beads 9 extending in the collision force transmission direction are designed on the front outer panel 7 of the engine compartment side sill, thereby further improving the strength of the front outer panel 7 of the engine compartment side sill.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientations, indicate orientations based on coordinate systems in the drawings of the specification, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Claims (8)
1. An engine compartment boundary beam structure, including the anterior segment of engine compartment boundary beam, overlap joint at the anterior planking of engine compartment boundary beam outside the anterior segment of engine compartment boundary beam and overlap joint in the preceding wheel casing of the anterior planking upside of engine compartment boundary beam, its characterized in that: the front support plate is U-shaped in cross section and comprises a lateral wall, a front side wall and a rear side wall, wherein the outer edge of the front side wall is connected with the front edge of the lateral wall, the outer edge of the front side wall is connected with the rear side wall which is connected with the rear edge of the lateral wall, the lower portion of the front support plate is overlapped on the outer side of the front portion of the engine compartment boundary beam, the upper portion of the front support plate is overlapped on the outer side of the front portion of the front wheel cover, a first cavity is formed between the lower portion of the front support plate and the front portion outer plate of the engine compartment boundary beam in a surrounding mode, a front support plate reinforcing piece is arranged in the first cavity in an inclined mode from the front portion to the rear portion, the front end portion of the front support plate reinforcing piece is overlapped on the front side wall, and the rear end portion of the front support plate reinforcing piece is overlapped on the front portion outer plate of the engine compartment boundary beam.
2. The engine compartment side rail structure according to claim 1, wherein: the inner side of the outer plate at the front part of the engine compartment boundary beam is lapped with a supporting plate, the lapping position of the supporting plate corresponds to the position of the rear end part of the front supporting plate reinforcing part, and the supporting plate is lapped with the front section of the engine compartment boundary beam.
3. The engine compartment side rail structure according to claim 1, wherein: the front supporting plate reinforcing piece comprises a reinforcing piece body, a first lap-joint flanging and a second lap-joint flanging, wherein the reinforcing piece body is inclined from the front side to the rear side, the front edge of the reinforcing piece body is turned over towards the outer side, the second lap-joint flanging is turned over from the rear edge of the reinforcing piece body towards the rear side, the first lap-joint flanging is overlapped and lapped on the front side wall, and the second lap-joint flanging is overlapped and lapped on the outer plate in the front of the side beam of the engine compartment.
4. The engine compartment side rail structure according to claim 3, wherein: the steel pipe is characterized by further comprising a reinforcing steel pipe supported between the first lap-joint flanging and the second lap-joint flanging, the reinforcing steel pipe is obliquely arranged from front to back to the inner side, the front end of the reinforcing steel pipe is connected with the first lap-joint flanging, and the rear end of the reinforcing steel pipe is connected with the second lap-joint flanging.
5. The engine compartment side rail structure according to claim 4, wherein: two reinforcing steel pipes are connected between the first lapping flanging and the second lapping flanging.
6. The engine compartment side rail structure according to claim 4, wherein: the central axis of the reinforced steel pipe and the outer plate at the front part of the boundary beam of the engine compartment form an acute angle.
7. The engine compartment side rail structure according to claim 1, wherein: still include down the tip with the lapped wheel casing reinforcing plate and the preceding tip of the upper end of preceding backup pad with connecting plate before the lapped side wall of the upper end of wheel casing reinforcing plate, the upper portion overlap joint of preceding backup pad is in the outside of the front edge of preceding wheel casing, connecting plate overlap joint is in before the side wall the outside of the upper edge of preceding wheel casing, the wheel casing reinforcing plate overlap joint is in be located on the preceding wheel casing the upper end of preceding backup pad with the outside of the edge between the front end of connecting plate before the side wall.
8. The engine compartment side rail structure according to claim 7, wherein: the upper portion of preceding backup pad with enclose into the second cavity between the front wheel cover, the wheel casing reinforcing plate with enclose into the third cavity between the front wheel cover, the side wall front connecting plate with enclose into the fourth cavity between the front wheel cover.
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CN202110745484.2A CN113371071B (en) | 2021-06-30 | 2021-06-30 | Engine compartment boundary beam structure |
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CN113371071B CN113371071B (en) | 2023-03-14 |
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