CN202271940U - Front bumper anti-collision beam of automobiles - Google Patents
Front bumper anti-collision beam of automobiles Download PDFInfo
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- CN202271940U CN202271940U CN2011203688123U CN201120368812U CN202271940U CN 202271940 U CN202271940 U CN 202271940U CN 2011203688123 U CN2011203688123 U CN 2011203688123U CN 201120368812 U CN201120368812 U CN 201120368812U CN 202271940 U CN202271940 U CN 202271940U
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- front bumper
- support portion
- supporting part
- tensile strength
- supporting portion
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Abstract
The utility model discloses a front bumper anti-collision beam of automobiles, which comprises a bearing portion (1), an upper supporting portion (2) located at the upper end of the bearing portion (1) and a lower supporting portion (3) located at the lower end of the bearing portion (1). The bearing portion (1) is a vertical plate, both the upper supporting portion (2) and the lower supporting portion (3) are horizontal plates, and the length of the upper supporting portion (2) is larger than that of the lower supporting portion (3). The bearing portion (1) is locally recessed inwards to form a reinforcing portion (1a), and a folded edge (4) parallel to the bearing portion (1) is respectively arranged at one ends of the upper supporting portion (2) and the lower supporting portion (3) which are far away from the bearing portion (1). The front bumper anti-collision beam is integrally formed by a steel plate with 400-600MPa tensile strength and 1.8-2.5mm thickness in hot stamping mode, and the tensile strength of the front bumper anti-collision beam after hot stamping is 1300-1800MPa. Through structure optimization, the front bumper anti-collision beam of the automobiles saves materials, reduces cost, simplifies a processing method, and can achieve the same anti-collision capability as before improvement.
Description
Technical field
The utility model relates to technical field of automobile parts, particularly the automobile front beam collision prevention girders.
Background technology
Traditional automobile front beam collision prevention girders is welded by inner panel and outside plate, and its cross sectional shape is as shown in Figure 5; Constitute inner panel and outside plate the selection of material HC450/980TR (material property is: yield strength 450～700MPa, tensile strength 980 MPa, elongation after fracture 14) by two rectangles and three linear portions; Thickness T=1.5; Forming process is generally cold stamping, yet the drawability of this material is relatively poor, causes the part rebound resilience after cold punching technology is made big; Part accuracy is difficult to guarantee, has brought very big trouble for follow-up welding and assembly technology; Inner panel, the independent moulding of outside plate correspondingly increased cubing, welding jig and soldering turret development cost, energy resource consumption and handling cost, and the tensile strength of processing are bad.
The utility model content
The utility model technical matters to be solved is: the structure to the front bumper collision prevention girders of automobile is optimized, and the automobile front beam collision prevention girders that a kind of technology cost is low, precision is high, collision performance is good is provided.
For this reason; The technical scheme that the utility model adopted is: a kind of front bumper collision prevention girders; Comprise supporting part (1), be positioned at the last support portion (2) of supporting part (1) upper end and be positioned at the following support portion (3) of supporting part (1) lower end; Said supporting part (1) is a riser; Said upward support portion (2) and following support portion (3) are horizontal plate and go up the length of the length of support portion (2) greater than following support portion (3); Said supporting part (1) part caves inward and forms rib (1a); Saidly go up support portion (2) and following support portion (3) is provided with the flange (4) that is parallel to supporting part (1) at the end away from supporting part (1), this front bumper collision prevention girders is that 400～600Mpa, thickness are that the steel hot stamping of 1.8～2.5mm is one-body molded by tensile strength, and the tensile strength after the drop stamping is 1300～1800Mpa.
As preferably, said rib (1a) is arranged on the middle part of supporting part (1), and this rib (1a) is a circular arc or square.
Said tensile strength is that the steel plate of 400～600Mpa is hot rolling or hot rolling acid-cleaning steel plate BR1500HS, cold rolled annealed steel plate B1500HS, and thickness is 2mm.
The bumper/spoiler collision prevention girders of the utility model is integrally formed, need as background technology, not make welding formation more respectively to inner panel, outside plate, has not only reduced by a cover frock clamp mould, and has simplified technology, has improved accuracy of manufacture.
And after the steel plate materials that the utility model adopts was processed collision prevention girders through heat pressing process, tensile strength rose to 1300～1800Mpa from 400～600Mpa, and the crashproof mechanical characteristics of collision prevention girders obviously is improved.
Beneficial effect:
(1) reduced by a part, made and correspondingly reduced car load oil consumption and CO by body lightening
2Discharging;
(2) through Optimal Structure Designing, save the development cost and the management maintenance cost of part cubing, welding jig, soldering turret, reduce welding expense and energy resource consumption, enhance productivity, controlled comprehensive manufacturing cost effectively:
(3) structure design is simple, and part forming property is better relatively, helps the raising of vehicle body precision, promotes complete vehicle quality;
(4) reduce the press tonnage demand, reduce the punching press noise;
(5) through material selection and technological parameter setting, improve the superficial hardness and the resistance to abrasion thereof of part easily and effectively, improve the collision performance of vehicle.
In sum, the utility model has been practiced thrift material, has reduced cost, has been simplified job operation through structure and the optimization of selection and the improvement of job operation, and can reach same anti-collision capacity before the improvement.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Fig. 2 is the A-A section drawing of Fig. 1.
Fig. 3 is second kind of section drawing of the utility model.
Fig. 4 is the third section drawing of the utility model.
Fig. 5 is the section drawing of the front bumper collision prevention girders of traditional automobile.
Fig. 6 is the speed course comparison diagram of front bumper collision prevention girders in the car load Collision test that improves forward and backward automobile.
Fig. 7 is the deceleration/decel course comparison diagram of front bumper collision prevention girders in the car load Collision test that improves forward and backward automobile.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further:
Like the front bumper collision prevention girders of Fig. 1, automobile shown in Figure 2, constitute by supporting part 1, the following support portion 3 that is positioned at the last support portion 2 of supporting part 1 upper end and is positioned at supporting part 1 lower end, the three has constituted the arch cross section of front bumper collision prevention girders.Supporting part 1 is a riser, and last support portion 2 is horizontal plate with following support portion 3.The width of supporting part 1, last support portion 2 and following support portion 3 equates (like Fig. 1), and the length of last support portion 2 is greater than the length (like Fig. 2) of following support portion 3.Last support portion 2 is provided with the flange 4 that is parallel to supporting part 1 with following support portion 3 at the end away from supporting part 1.The middle part of supporting part 1 caves inward and forms rib 1a, and this rib 1a is preferably circular arc, is convenient to punch forming, also can be square, as shown in Figure 3.Be arranged on the both ends that rib 1a on the supporting part 1 can be positioned at supporting part 1, the rib 1a on the supporting part 1 is not limited to one, can be two, three or more, as shown in Figure 4.
The front bumper collision prevention girders of this automobile is that 400～600Mpa, thickness are that the steel hot stamping of 1.8～2.5mm is one-body molded by tensile strength, and the tensile strength after the drop stamping is 1300～1800Mpa.
Preferred steel plate materials is hot rolling or hot rolling acid-cleaning steel plate BR1500HS, cold rolled annealed steel plate B1500HS, and thickness is 2mm, and the tensile strength after the drop stamping is 1300～1800Mpa, and these two kinds of materials are Baosteel kind on sale.The material of selecting for use is not limited to above-mentioned two kinds, can select the close corresponding gauge material of chemical constitution and mechanical characteristics for use, reaches the tensile strength of 1300～1800Mpa through the drop stamping moulding.The chemical constitution of wherein cold rolled annealed steel plate B1500HS is:
The mechanical characteristics of hot rolling or hot rolling acid-cleaning steel plate BR1500HS, cold rolled annealed steel plate B1500HS is:
Mechanical characteristics after hot rolling or hot rolling acid-cleaning steel plate BR1500HS, the cold rolled annealed steel plate B1500HS drop stamping is:
| Yield strength (MPa) | Tensile strength (MPa) | Elongation after fracture |
| 950～1250 | 1300～1800 | ≥6 |
The job operation of the front bumper collision prevention girders of above-mentioned automobile may further comprise the steps:
(1) blanking: selecting tensile strength for use is that 400～600Mpa, thickness are the steel plate of 1.8～2.5mm; According to the developed outline size of the front bumper collision prevention girders of automobile and consider that the flanging size in the diel carries out blanking, go out the circular hole among Fig. 1 and Fig. 3 in the time of blanking;
(2) heating: steel plate is put into heating furnace be heated to Ac3 and make its abundant austenitizing, pro-eutectoid ferrite all incorporated the austenic finishing temperature when Ac3 was meant heating;
(3) punch forming: the steel plate after will heating moves to press fast, steel plate is placed prefabricated press die; Mould is made up of upper die and lower die, and upper and lower mould lumps together the front bumper collision prevention girders structure matching of the die cavity and the design-calculated automobile of formation, and the flanging size of reserving in the blanking is pressed on outside the die cavity behind the matched moulds; Pass through the press punch forming behind the matched moulds; Keep the punching press state to be cooled to 100～200 ℃, the steel plate tensile strength reaches 1300～1800Mpa, and steel plate is taken out from press;
(4) shot-ball peening is to remove the oxide skin of piece surface;
(5) natural cooling is at room temperature cut edge with the laser die cutter, and flanging is cut away.
Tensile strength is the steel plate of 400～600Mpa and is preferably in the step (1): hot rolling or hot rolling acid-cleaning steel plate BR1500HS, cold rolled annealed steel plate B1500HS, thickness is 2mm.
For verifying the technique effect of this utility model, according to data and material parameter modeling that design provides, relatively its poor performance is different in nature under the central collision condition.Adopt Hypermesh and OASYS and Ls-Dyna software as pre-process and post-process and solver instrument; According to CM VDR294 rules " about the design rule of head-on crash passenger protection ", the front bumper collision prevention girders central collision structure crash-worthiness of the automobile before and after improving is analyzed.
The car load initial velocity is 50km/h, and the calculating collision time is 90ms.The front bumper collision prevention girders that is installed in the automobile on the car load is in the analytical test of central collision structure crash-worthiness; Improving two forward and backward scheme car load speed course figure contrasts as shown in Figure 6; Dotted line is the preceding speed of change; Solid line is the speed of new departure, and it is not obvious to improve forward and backward speed course contrast difference.Improve two forward and backward scheme car load deceleration/decel course figure and contrast as shown in Figure 7ly, dotted line is former scheme, and solid line is new departure, and new departure is not obvious to the influence of deceleration/decel.Comparative analysis improves the front bumper collision prevention girders of forward and backward automobile under 100% central collision operating mode; Not obvious at high speed stage from car load speed course figure and its difference of car load deceleration/decel course graph discovery; The front bumper collision prevention girders of the automobile of proof new construction is through structure optimization; Practice thrift material, reduced cost, simplified job operation, can reach same anti-collision capacity before the improvement.
Claims (3)
1. the front bumper collision prevention girders of an automobile; It is characterized in that: comprise supporting part (1), be positioned at the last support portion (2) of supporting part (1) upper end and be positioned at the following support portion (3) of supporting part (1) lower end; Said supporting part (1) is a riser; Said upward support portion (2) and following support portion (3) are horizontal plate and go up the length of the length of support portion (2) greater than following support portion (3); Said supporting part (1) part caves inward and forms rib (1a); Saidly go up support portion (2) and following support portion (3) is provided with the flange (4) that is parallel to supporting part (1) at the end away from supporting part (1), this front bumper collision prevention girders is that 400～600Mpa, thickness are that the steel hot stamping of 1.8～2.5mm is one-body molded by tensile strength, and the tensile strength after the drop stamping is 1300～1800Mpa.
2. according to the front bumper collision prevention girders of the described automobile of claim 1, it is characterized in that: said rib (1a) is arranged on the middle part of supporting part (1), and this rib (1a) is a circular arc or square.
3. according to the front bumper collision prevention girders of claim 1 or 2 described automobiles, it is characterized in that: said tensile strength is that the steel plate of 400～600Mpa is hot rolling or hot rolling acid-cleaning steel plate BR1500HS, cold rolled annealed steel plate B1500HS, and thickness is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203688123U CN202271940U (en) | 2011-09-30 | 2011-09-30 | Front bumper anti-collision beam of automobiles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203688123U CN202271940U (en) | 2011-09-30 | 2011-09-30 | Front bumper anti-collision beam of automobiles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202271940U true CN202271940U (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203688123U Expired - Fee Related CN202271940U (en) | 2011-09-30 | 2011-09-30 | Front bumper anti-collision beam of automobiles |
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| Country | Link |
|---|---|
| CN (1) | CN202271940U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390335A (en) * | 2011-09-30 | 2012-03-28 | 力帆实业(集团)股份有限公司 | Front bumper anti-collision beam and processing method thereof |
-
2011
- 2011-09-30 CN CN2011203688123U patent/CN202271940U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102390335A (en) * | 2011-09-30 | 2012-03-28 | 力帆实业(集团)股份有限公司 | Front bumper anti-collision beam and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20190930 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |