CN112389542A - Front longitudinal beam front structure adapting to small offset collision - Google Patents
Front longitudinal beam front structure adapting to small offset collision Download PDFInfo
- Publication number
- CN112389542A CN112389542A CN202011299382.4A CN202011299382A CN112389542A CN 112389542 A CN112389542 A CN 112389542A CN 202011299382 A CN202011299382 A CN 202011299382A CN 112389542 A CN112389542 A CN 112389542A
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- China
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- longitudinal beam
- wheel cover
- plate
- front longitudinal
- small offset
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
-
- 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
- B62D25/16—Mud-guards or wings; Wheel cover panels
Abstract
The invention aims to provide a front longitudinal beam front structure adaptive to small offset collision so as to increase a transmission path of collision energy, thereby improving the performance in 25% small offset collision and MPDB collision test working conditions and protecting the safety of passengers. The front longitudinal beam front structure suitable for small offset collision comprises a front longitudinal beam, wherein a widening structure is arranged at the front part of the front longitudinal beam, and the widening structure extends towards the outer side direction of a vehicle to cover a front area of a vehicle wheel cover or the vehicle wheel cover and an outer plate of a reinforcing beam at the side of the vehicle wheel cover; the rear end of the widening structure is fixedly connected with the front end of the automobile wheel cover assembly and the front end of the automobile wheel cover side reinforcing beam outer plate respectively. According to the invention, the widened structure is arranged at the front part of the front longitudinal beam, so that the Y-direction section of the front part of the front longitudinal beam and the connection between the front longitudinal beam and the wheel cover assembly as well as the wheel cover side reinforcing beam are increased, the front longitudinal beam can participate in the deformation energy absorption process in the 25% small offset collision process, and meanwhile, the Y-direction overlapping area with the barrier can be increased in the MPDB collision test working condition.
Description
Technical Field
The invention relates to the technical field of automobile structures, in particular to a front longitudinal beam front structure of an automobile.
Background
C-IASI (China insurance automobile safety index) introduces 25% small over lap (small over lap) in an IIHS (inter-vehicle safety System) evaluation procedure, as shown in figure 1, in the 25% small over lap, a Y direction of a front longitudinal beam and a rigid barrier do not have a collision overlapping area, so that the front part of the front longitudinal beam cannot effectively participate in deformation energy absorption, and finally collision energy is transmitted to member cabins mainly through a wheel cover side reinforcing beam, a shank protecting beam and the like, so that the deformation of the passenger cabins is large, and the injury value of passengers is increased. Meanwhile, in the working condition of an MPDB (Moving Progressive Deformable Barrier) collision test, energy is transmitted by independently depending on the longitudinal beam as a path, so that the energy cannot be effectively dispersed and transmitted, and the transmission path of the collision energy of the MPDB needs to be increased.
Disclosure of Invention
The invention aims to provide a front longitudinal beam front structure adaptive to small offset collision so as to increase a transmission path of collision energy, thereby improving the performance in 25% small offset collision and MPDB collision test working conditions and protecting the safety of passengers.
The front structure of the front longitudinal beam adapting to the small offset collision comprises the front longitudinal beam, and is characterized in that the front part of the front longitudinal beam is provided with a widening structure, and the widening structure extends towards the outer side direction of a vehicle to cover a front area of a vehicle wheel cover or the vehicle wheel cover and an outer plate of a reinforcing beam at the side of the vehicle wheel cover.
In the 25% small offset collision test working condition, the widening structure can guide the collision force to the front longitudinal beam, so that the front longitudinal beam can participate in deformation energy absorption in the 25% small offset collision test, the integral energy absorption effect of the front end of the vehicle body can be improved, the improvement of the average value of the first-order acceleration is facilitated, the excessive energy is prevented from being transmitted to the front cabin, and the safety of passengers is protected. In the MPDB collision test working condition, the widened structure can enable collision energy to be transmitted and absorbed along the automobile wheel cover and the automobile wheel cover side reinforcing beam outer plate, the deformation uniformity of the barrier is improved, and deduction is reduced.
Further, the rear end of the widening structure is fixedly connected with the front end of the automobile wheel cover assembly and the front end of the automobile wheel cover side reinforcing beam outer plate respectively, so that the collision energy can be transmitted to the front end of the automobile wheel cover assembly and the automobile wheel cover side reinforcing beam outer plate under the MPDB collision test working condition.
Specifically, the front longitudinal beam is formed by fixedly connecting a front longitudinal beam body with a groove-shaped cross section and a front longitudinal beam cover plate, and the widening structure is a groove body protruding towards the outer side direction of the vehicle at the front end of the front longitudinal beam cover plate. The widening structure is integrally formed on the front longitudinal beam cover plate, so that the connection strength with the front longitudinal beam body can be increased, and the collision energy of small offset collision is effectively transmitted to the front longitudinal beam. In addition, the widened structure is a groove structure, has stronger structural strength and is beneficial to the transmission of collision energy.
Furthermore, the tank bottom plate of the tank body is composed of a front vertical plate and a rear inclined plate, and the inclined plate is inclined towards the central axis direction of the automobile from front to back gradually. The inclined plate and the front longitudinal beam body form a triangular structure with stable structure, the collision force of small offset collision is converted into acting force in the direction of the central axis of the oblique automobile, the automobile transversely moves in the direction of the central axis of the automobile under the action of the acting force, so that the barrier in the small offset collision is avoided, the possibility of direct collision of the barrier to a passenger compartment is avoided or reduced, and the safety coefficient of passengers is improved.
Furthermore, in order to reinforce the structural strength of the front part (namely, the widened structure) of the front longitudinal beam and avoid the situation that the widened structure cannot transfer collision energy due to the fact that the widened structure collapses at the initial stage of small offset collision, an inner reinforcing plate is arranged at the front part of the front longitudinal beam, folding edges are arranged on two sides of the inner reinforcing plate, and the folding edges on the two sides are fixedly connected with the front longitudinal beam body and the groove body respectively. The inner reinforcing plate enables the front part of the front longitudinal beam to form two parallel cavity structures, so that the strength of the front longitudinal beam is greatly increased. In addition, the inclined plate can support the inner reinforcing plate in an abutting mode, and the inner reinforcing plate is prevented from moving backwards under the action of collision force.
Furthermore, the outer side folded edge of the inner reinforcing plate is fixedly connected with the groove body and the automobile wheel cover side reinforcing beam outer plate through three-layer welding, so that the automobile wheel cover side reinforcing beam outer plate and the front longitudinal beam can be stably combined together to form a good collision energy dispersion and transmission path, and collision energy can be transmitted backwards along the front longitudinal beam and the automobile wheel cover side reinforcing beam outer plate respectively and dispersed through the front longitudinal beam.
Furthermore, the automobile wheel cover side reinforcing beam outer plate is of a groove-shaped structure, and the automobile wheel cover side reinforcing beam outer plate is in butt joint with the automobile wheel cover assembly to form a hollow cavity structure; the front end of the automobile wheel cover assembly is provided with an inclined end plate, and two sides of the inclined end plate are respectively attached to and fixedly connected with the front ends of the inclined plate and the automobile wheel cover side reinforcing beam outer plate. The automobile wheel cover side stiffening beam outer plate and the automobile wheel cover assembly integrated structure with the hollow cavity structure can greatly improve the overall strength, meanwhile, the inclined front end plate is fixedly connected with the inclined plate and the automobile wheel cover side stiffening beam outer plate, and when the front longitudinal beam moves backwards, the automobile wheel cover side stiffening beam outer plate and the automobile wheel cover assembly are pushed to the outer side of an automobile by the inclined plane guide effect of the inclined plate, so that the automobile wheel cover side stiffening beam outer plate and the automobile wheel cover assembly are more contacted with a barrier, the collision energy is absorbed, and the impact of the collision energy on a passenger compartment is reduced.
According to the invention, the widened structure is arranged at the front part of the front longitudinal beam, so that the Y-direction section of the front part of the front longitudinal beam and the connection between the front longitudinal beam and the wheel cover assembly and the wheel cover side reinforcing beam are increased, the front longitudinal beam can participate in the deformation energy absorption process in the 25% small offset collision process, the energy is prevented from being transmitted to a passenger cabin to cause deformation, the safety of passengers is protected, meanwhile, the peak value of the first-order acceleration of the longitudinal beam can be favorably improved, the Y-direction overlapping area with the barrier can be increased in the MPDB collision test working condition, the barrier can be favorably deformed uniformly, and the deduction is.
Drawings
FIG. 1 is a schematic representation of a 25% small offset crash test.
FIG. 2 is an assembly view of a longitudinal beam assembly, a wheel cover assembly and a wheel cover side reinforcing beam outer plate assembly according to the invention.
Fig. 3 is a schematic view of the overall structure of the front portion of the vehicle body of the present invention.
Fig. 4 is a cross-sectional view a-a of fig. 3.
Fig. 5 is an exploded view of the front side member front structure of the invention.
The figures are numbered: 1. a front longitudinal beam body; 2. a front longitudinal beam cover plate; 3. a trough body; 31. a vertical plate; 32. an inclined plate; 4. an inner reinforcing plate; 5. a wheel cover side stiffening beam outer plate; 6. a vehicle wheel cover assembly; 61. the end plate is inclined.
Detailed Description
The following describes embodiments of the present invention, such as shapes and structures of respective members, mutual positions and connection relationships between respective portions, and actions and operation principles of the respective portions, in further detail, with reference to the accompanying drawings.
Example 1:
the embodiment provides a front longitudinal beam front structure adapting to small offset collision so as to increase the transmission path of collision energy, thereby improving the performance in 25% small offset collision and MPDB collision test working conditions and protecting the safety of passengers.
The front longitudinal beam front structure suitable for small offset collision comprises a front longitudinal beam, wherein a widening structure is arranged at the front part of the front longitudinal beam, the widening structure extends towards the outer side direction of a vehicle to cover the front area of a vehicle wheel cover or the front area of the vehicle wheel cover and the front area of an outer plate of a reinforcing beam at the side of the vehicle wheel cover, and the rear end of the widening structure is fixedly connected with the front end of a vehicle wheel cover assembly and the front end of the outer plate of the reinforcing beam at the side of the vehicle wheel cover respectively.
Specifically, as shown in fig. 2 to 5, the front longitudinal beam is formed by connecting and fixing a front longitudinal beam body 1 with a groove-shaped cross section and a front longitudinal beam cover plate 2, and the widening structure is a groove body 3 protruding towards the outer side direction of the vehicle at the front end of the front longitudinal beam cover plate 2; the tank floor of the tank body 3 is composed of a front vertical plate 31 and a rear inclined plate 32, and the inclined plate 32 is inclined from front to rear toward the central axis of the vehicle. The front part of the front longitudinal beam is provided with an inner reinforcing plate 4, two sides of the inner reinforcing plate 4 are provided with folded edges, the folded edges on the two sides are fixedly connected with the front longitudinal beam body 1 and the groove body 3 respectively, and the outer folded edge of the inner reinforcing plate 4 is fixedly connected with the groove body 3 and the automobile wheel cover side reinforcing beam outer plate 5 through three-layer welding.
In the 25% small offset collision test working condition, the widening structure can guide the collision force to the front longitudinal beam, so that the front longitudinal beam can participate in deformation energy absorption in the 25% small offset collision test, the integral energy absorption effect of the front end of the vehicle body can be improved, the improvement of the average value of the first-order acceleration is facilitated, the excessive energy is prevented from being transmitted to the front cabin, and the safety of passengers is protected. In the MPDB collision test working condition, the widened structure can enable collision energy to be transmitted and absorbed along the automobile wheel cover and the automobile wheel cover side reinforcing beam outer plate 5, improve the deformation uniformity of the barrier and reduce deduction.
The widened structure is integrally formed on the front side member cover plate 2, and the connection strength with the front side member body 1 can be increased, so that the collision energy of small offset collision is effectively transmitted to the front side member. In addition, the widened structure is a groove body 3 structure, so that the structure has stronger structural strength and is beneficial to the transmission of collision energy. The inclined plate 32 and the front longitudinal beam body 1 form a triangular structure with stable structure, and the collision force of small offset collision is converted into acting force in the direction of the central axis of the automobile in an inclined mode, so that the automobile transversely moves in the direction of the central axis of the automobile under the action of the acting force, the barrier in the small offset collision is avoided, the possibility of direct collision of the barrier to a passenger compartment is avoided or reduced, and the safety coefficient of passengers is improved.
The automobile wheel house side reinforcing beam outer plate 5 and the front longitudinal beam are stably combined together to form a good collision energy dispersion and transmission path, so that collision energy can be transmitted backwards along the front longitudinal beam and the automobile wheel house side reinforcing beam outer plate 5 respectively, and the front part of the front longitudinal beam forms two parallel cavity structures by dispersing the inner reinforcing plate 4 through the front longitudinal beam, so that the strength of the position is greatly increased. In addition, the inclined plate 32 can form an abutting support for the inner reinforcing plate 4, and the inner reinforcing plate 4 is prevented from moving backwards under the action of collision force.
In the embodiment, the automobile wheel house side reinforcing beam outer plate 5 is a groove-shaped structure, and the automobile wheel house side reinforcing beam outer plate 5 is in butt joint with the automobile wheel house assembly 6 to form a hollow cavity structure; the front end of the automobile wheel cover assembly 6 is provided with an inclined end plate 61, and two sides of the inclined end plate 61 are respectively attached to and fixedly connected with the front ends of the inclined plate 32 and the automobile wheel cover side reinforcing beam outer plate 5. The automobile wheel cover side reinforcing beam outer plate 5 and the automobile wheel cover assembly 6 of the hollow cavity structure are combined to greatly improve the overall strength, meanwhile, the inclined front end plate is fixedly connected with the inclined plate 32 and the automobile wheel cover side reinforcing beam outer plate 5, and when the front longitudinal beam moves backwards, the inclined plane guide effect of the inclined plate 32 is utilized to push the automobile wheel cover side reinforcing beam outer plate 5 and the automobile wheel cover assembly 6 to the outer side of an automobile, so that the automobile wheel cover side reinforcing beam outer plate 5 and the automobile wheel cover assembly 6 are more contacted with a barrier, the collision energy is absorbed, and the impact of the collision energy on a passenger compartment is reduced.
The invention has been described in connection with the accompanying drawings, it is to be understood that the invention is not limited in its application to the details of construction and the arrangement of the components set forth in the following description, as long as the invention is capable of being practiced without modification in any way whatsoever, and is capable of other applications without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A front longitudinal beam front structure adapting to small offset collision comprises a front longitudinal beam and is characterized in that a widening structure is arranged at the front part of the front longitudinal beam and extends towards the outer side of a vehicle to cover a front area of a vehicle wheel cover or the vehicle wheel cover and an outer plate of a reinforcing beam at the side of the vehicle wheel cover.
2. The front side member front structure according to claim 1, wherein a rear end of the widening structure is fixedly connected to a front end of a wheel house assembly and a front end of a reinforcing beam outer panel on a wheel house side, respectively.
3. The front longitudinal beam front structure adapting to small offset collision according to claim 1 or 2, characterized in that the front longitudinal beam is formed by connecting and fixing a front longitudinal beam body with a groove-shaped section and a front longitudinal beam cover plate, and the widening structure is a groove body protruding towards the outer side direction of the vehicle at the front end of the front longitudinal beam cover plate.
4. The front side member front structure according to claim 3, wherein the groove bottom plate of the groove body is formed by a vertical plate at the front and an inclined plate at the rear, and the inclined plate is inclined from front to rear gradually toward the central axis of the vehicle.
5. The front longitudinal beam front structure adapting to small offset collision of claim 4, wherein the front part of the front longitudinal beam is provided with an inner reinforcing plate, two sides of the inner reinforcing plate are provided with folded edges, and the folded edges at the two sides are respectively fixedly connected with the front longitudinal beam body and the groove body.
6. The front longitudinal beam front structure adapting to small offset collision of claim 5, wherein the outer folded edge of the inner reinforcing plate is fixedly connected with the groove body and the outer plate of the automobile wheel cover side reinforcing beam through three-layer welding.
7. The front longitudinal beam front structure adapting to small offset collision according to claim 4, wherein the outer plate of the automobile wheel cover side reinforcing beam is of a groove structure, and the outer plate of the automobile wheel cover side reinforcing beam is butted with the automobile wheel cover assembly to form a hollow cavity structure; the front end of the automobile wheel cover assembly is provided with an inclined end plate, and two sides of the inclined end plate are respectively attached to and fixedly connected with the front ends of the inclined plate and the automobile wheel cover side reinforcing beam outer plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299382.4A CN112389542B (en) | 2020-11-18 | 2020-11-18 | Front longitudinal beam front structure adapting to small offset collision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011299382.4A CN112389542B (en) | 2020-11-18 | 2020-11-18 | Front longitudinal beam front structure adapting to small offset collision |
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| Publication Number | Publication Date |
|---|---|
| CN112389542A true CN112389542A (en) | 2021-02-23 |
| CN112389542B CN112389542B (en) | 2021-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011299382.4A Active CN112389542B (en) | 2020-11-18 | 2020-11-18 | Front longitudinal beam front structure adapting to small offset collision |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060086A (en) * | 2021-02-25 | 2021-07-02 | 浙江合众新能源汽车有限公司 | 25% small offset collision automobile body structure of automobile |
| CN113371071A (en) * | 2021-06-30 | 2021-09-10 | 重庆长安汽车股份有限公司 | Engine compartment boundary beam structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423125A1 (en) * | 1994-07-01 | 1996-01-04 | Opel Adam Ag | Vehicle chassis with two cross=ties |
| JP2001063626A (en) * | 1999-08-26 | 2001-03-13 | Honda Motor Co Ltd | Vehicular front part structure |
| CN208868148U (en) * | 2018-10-26 | 2019-05-17 | 广州汽车集团股份有限公司 | Vehicle body front structure and automobile |
| CN209467201U (en) * | 2019-02-14 | 2019-10-08 | 广州汽车集团股份有限公司 | Front longitudinal beam and automobile |
-
2020
- 2020-11-18 CN CN202011299382.4A patent/CN112389542B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4423125A1 (en) * | 1994-07-01 | 1996-01-04 | Opel Adam Ag | Vehicle chassis with two cross=ties |
| JP2001063626A (en) * | 1999-08-26 | 2001-03-13 | Honda Motor Co Ltd | Vehicular front part structure |
| CN208868148U (en) * | 2018-10-26 | 2019-05-17 | 广州汽车集团股份有限公司 | Vehicle body front structure and automobile |
| CN209467201U (en) * | 2019-02-14 | 2019-10-08 | 广州汽车集团股份有限公司 | Front longitudinal beam and automobile |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113060086A (en) * | 2021-02-25 | 2021-07-02 | 浙江合众新能源汽车有限公司 | 25% small offset collision automobile body structure of automobile |
| CN113371071A (en) * | 2021-06-30 | 2021-09-10 | 重庆长安汽车股份有限公司 | Engine compartment boundary beam structure |
| CN113371071B (en) * | 2021-06-30 | 2023-03-14 | 重庆长安汽车股份有限公司 | Engine compartment boundary beam structure |
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| Publication number | Publication date |
|---|---|
| CN112389542B (en) | 2021-11-30 |
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