CN203727470U - Automobile front longitudinal beam structure with variable thickness - Google Patents
Automobile front longitudinal beam structure with variable thickness Download PDFInfo
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- CN203727470U CN203727470U CN201320849799.2U CN201320849799U CN203727470U CN 203727470 U CN203727470 U CN 203727470U CN 201320849799 U CN201320849799 U CN 201320849799U CN 203727470 U CN203727470 U CN 203727470U
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- 230000007704 transition Effects 0.000 claims abstract description 48
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 14
- 239000010959 steel Substances 0.000 claims abstract description 14
- 230000008719 thickening Effects 0.000 claims abstract description 7
- 230000008859 change Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000004083 survival effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000009432 framing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
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- Body Structure For Vehicles (AREA)
Abstract
An automobile front longitudinal beam structure with variable thickness is characterized by comprising a first equal-thickness segment, a first transition segment and a second equal-thickness segment, wherein the first equal-thickness segment, the first transition segment and the second equal-thickness segment are sequentially arranged from the front to the rear of a front longitudinal beam; the thickness of the fracture surface of the first equal-thickness segment is smaller than the thickness of the fracture surface of the second equal-thickness segment; the first transition segment is a thickening segment with the thickness of the fracture surface in continuous transition; the first equal-thickness segment, the first transition segment and the second equal-thickness segment are of an integrated structure and made of a steel plate with the thickness of the fracture surface in continuous transition at different portions. According to the automobile front longitudinal beam structure, due to the different-thickness design, the requirement of the front longitudinal beam structure for performance is met, the number of local reinforcing plates is reduced, welding workloads are reduced, the weight of an automobile body is reduced, and on the premise that the automobile body is safe, the automobile front longitudinal beam structure has the advantages of being good in processing property, low in manufacturing cost and good in light-weight effect.
Description
Technical field
The utility model relates to a kind of automobile component, particularly a kind of Varying-thickness front longitudinal beam structure of automobile.
Background technology
Automobile front longitudinal beam is positioned at front portion of car body both sides, is the major part that builds cabin and load, is also to transmit the vital part that absorbs collision impact power.The energy that front side member absorbs in the time of automobile generation head-on crash accounts for greatly total endergonic 50%, in front biasing 40% collision, is topmost energy-absorbing member.Front side member is in the time of auto against, and the first crumple distortion of its front portion, absorbs crash energy greatly, reduces the energy that its rear portion is transmitted; Its rear strength is large, flexing resistance is large, is difficult for deforming, thereby ensures the required survival space of the corresponding driving staff in front side member rear portion.Therefore automobile front longitudinal beam is being undertaken the effect that absorbs collision energy, resists occupant space and diminish, protect occupant, and appropriate design automobile front longitudinal beam, choose reasonable front side member material model seem extremely important.
Automobile front longitudinal beam has been announced multiple form of implementation.Conventional front side member adopts the steel plate of equal thickness to make through punch welding.The front side member intensity being made due to uniform thickness homogeneous material can not finely meet the contradiction requirement that longeron had not only absorbed collision energy but also can finely resist occupant space distortion, and people have done many improvement in recent years.
The one, by the mode of structural design optimization.As Chinese patent 201020255047.X has announced a kind of heavier-duty front side member, leading portion, stage casing and the back segment of main design different cross section shape, by changing the shape of cross section bottom in body stage casing, cause sectional area to increase, significantly improve the flexing resistance in front side member stage casing, ensure in the time that body forward structure is subject to clashing into, reasonably Impact energy disperseed and transmit, ensured occupant's safety.This in the limited situation of cabin space, often limited the realization of design, and complex section form has strengthened the difficulty of figuration manufacture not only to being designed with very high requirement
The 2nd, the mode of increase local reinforcement.As Chinese patent 200910191263.4 discloses a kind of front rail structure of automobile body, before, during and after in front side member epimere groove, portion is welded with respectively anterior brace panel, middle part brace panel and rear portion brace panel, thereby front side member is strengthened on the whole, effectively impact energy when attenuation by absorption vehicle collision, strengthens the power transmission in load district, rear portion.Due to number of components and the increase of welding job amount, part manufacturing cost is increased, be unfavorable for the realization of automotive light weight technology.
Along with the appearance of laser tailor welded blanks, the Plate Welding of several different-thickness or varying strength is become to an integral slab, then become the third selection through the part of drawing making front side member.As Chinese patent 200820238454.2 discloses a kind of automobile front longitudinal beam of Segmented butt-welding type, longitudinal beam front section, longeron stage casing and longeron back segment are linked to be an entirety by the form of welding, and the material thickness progressive additive of longeron back segment is arrived in longitudinal beam front section, longeron stage casing, adopt thinner sheet material in energy-absorbing district, to meet under the prerequisite of vehicle body safety, realize body lightening.Although passed on front soft rear hard design philosophy, but due to the ladder jump catastrophe characteristics of the sudden change of laser assembly solder plate Weld Performance and slab thickness or intensity, easily cause occurring at certain position the jump that intensity changes software strategy into software-hardware strategy, cause direct crumple in the time of collision, have little time by energy disperse and direct effect to vehicle body, exist greatly to the damage rate of vehicle body, driving staff's safety is produced to the possibility threatening, need further optimize and improve.
Goal of the invention
The purpose of this utility model is to design a kind of Varying-thickness front longitudinal beam structure of automobile, reach the requirement of front rail structure to performance by the design of different-thickness, local brace panel quantity and welding job amount are reduced, make to alleviate tare, meeting under the prerequisite of vehicle body safety, there is shop characteristic good, low cost of manufacture, the advantage that lightweight is effective.
For achieving the above object, the technical solution of the utility model is:
The utility model is the front longitudinal beam structure of automobile that utilizes continuous variable thickness steel plate to make, longeron different parts Thickness Design difference, and adopt one to make at the different variable-thickness steel plate of zones of different thickness, thereby reach the requirement of front side member to load, rigidity and collision performance, can better realize the function of front side member.
Particularly, a kind of Varying-thickness front longitudinal beam structure of automobile, is characterized in that, comprises the first uniform thickness section, First Transition section, the second uniform thickness section that set gradually along front side member front and back; The section thickness of the first described uniform thickness section is less than the section thickness of the second uniform thickness section; Described First Transition section is the thickening section of section thickness continuous transition; The first uniform thickness section, First Transition section, the second uniform thickness section are integral type structure, and it is that the steel plate of a different parts section thickness continuous transition is made.
Further, after the second described uniform thickness section, also establish thick section of the second transition phase and C grade; The section thickness that C grade is thick section is greater than the section thickness of the second uniform thickness section, and the section thickness of the second transition phase is gradual change; Thick section of the second described transition phase and C grade are integral type structure with the first uniform thickness section, First Transition section, the second uniform thickness section, and it is that the steel plate of a different parts section thickness continuous transition is made.
Varying-thickness front longitudinal beam structure of automobile of the present utility model, according to the front soft rear hard functional requirement of front side member, front side member is divided into the version that is no less than two sections, comprise that longitudinal beam front section and longeron back segment that thickness is different are first, second uniform thickness section, between the longitudinal beam front section of different-thickness and longeron back segment, it is material thickness transition phase, transition phase can be continuous transition section, can be also the transition phase that comprises part homogeneous thickness.Longitudinal beam front section, longeron back segment and transition phase be between the two an entirety but not welding body, the different parts thickness difference that this is overall, is the thickness continuous transition section of material between thickness different parts.Progressive additive from longitudinal beam front section to the material thickness of longeron back segment.Adopt between different parts different-thickness, different-thickness position continuously the same variable-thickness steel plate of thickness transition this front side member that is made.
Front side member different parts thickness difference, its anterior thin thickness, rear portion thickness is thick, meets the front soft rear hard constructional feature of front side member, the anterior crash energy that absorbs while realizing collision, rear strength is difficult for greatly deforming, and can ensure the survival space that driving staff is required.Meeting under the prerequisite of vehicle body safety, this front side member also can be realized whole single mould punching and make, and reduces number of molds and cost, reduces the local number of components of strengthening, and has reduced welding job amount, cost-saving when realizing body lightening.
The beneficial effects of the utility model:
One, user is by the application to this technology, in the time ensureing and met the requiring of front side member carrying and collision performance, reduced welding reinforcement etc., realized lightweight effect, and apply in market has considerable prospect.
They are two years old, be shaped and Lightweight Technology development tendency with regard to auto parts and components, thickening plate part will replace the application of laser assembly solder plate in the part of this shape of similar front side member and application characteristic, not only promote part performance, and reduce and sheared the workflow of welding, reduce cost, will become the new direction of technical development.
Brief description of the drawings
Fig. 1 is the block diagram of the utility model embodiment 1.
Fig. 2 is the schematic diagram of the utility model embodiment 1 front side member longitudinally cutting face.
Fig. 3 is the schematic diagram of the longitudinally cutting face of the utility model embodiment 2.
Detailed description of the invention
Referring to Fig. 1, Fig. 2, a kind of Varying-thickness front longitudinal beam structure of automobile of the present utility model, comprises the first uniform thickness section 1, First Transition section 3, the second uniform thickness section 2 that set gradually along front side member front and back; The section thickness of the first described uniform thickness section 1 is less than the section thickness of the second uniform thickness section 2; Described First Transition section 3 is the thickening section of section thickness continuous transition; The first uniform thickness section 1, First Transition section 3, the second uniform thickness section 2 are integral type structure, and it is that the steel plate of a different parts section thickness continuous transition is made.
Referring to Fig. 3, after the second uniform thickness section 2 described in the utility model, also establish the second transition phase 4 and C grade thick section 5; The section thickness that C grade is thick section 5 is greater than the section thickness of the second uniform thickness section 2, and the section thickness of the second transition phase 4 is gradual change; Thick section 5 of the second described transition phase 4 and C grade and the first uniform thickness section 1, First Transition section 3, the second uniform thickness section 2 are integral type structure, and it is that the steel plate of a different parts section thickness continuous transition is made.
Transition phase between two uniform thickness sections can be the thickening section that length is grown, and can be also shorter thickening section.The length of this transition phase depends on that rolling-mill roller diameter, roll are depressed regulates the speed and the influence factor such as plate mill speed, and its attenuate slope of shorter transition phase is generally not more than 1:100.
H1 is basic thickness, by the flexible rolling of mill, can realize the thickness section of minimum H2.
Conventionally minimum H2 thickness section can design at front side member part leading portion, under individual cases, requires and collide the deformation requirements of rear front side member according to collision performance, also can be arranged in other regions of part.Maximum H1 thickness section design is at the back segment of front side member.
This Varying-thickness front side member part, is applicable to the material of the suitable for making such as steel, aluminium automobile front longitudinal beam part.
Automotive light weight technology becomes the main direction of development of automobile, and automobile front longitudinal beam is the strength member that auto body is heavy.Varying-thickness automobile front longitudinal beam, be adopt different parts different-thickness however between thickness position continuously the same variable-thickness steel plate of thickness transition be made.Meeting under the prerequisite of vehicle body safety, this front side member also can be realized whole single mould punching and make, and reduces die cost, reduces the local number of components of strengthening, and reduces welding job amount, cost-saving when realizing body lightening.
The method that between this employing different parts of the utility model different-thickness, different-thickness position, the same variable-thickness steel plate of thickness transition is made automobile front longitudinal beam class part continuously, also can be at other framing members of automobile, as applied on the body structural members such as roof cross beam, B post, more can be applied in other physical constructions.
Claims (2)
1. a Varying-thickness front longitudinal beam structure of automobile, is characterized in that, comprises the first uniform thickness section, First Transition section, the second uniform thickness section that set gradually along front side member front and back; The section thickness of the first described uniform thickness section is less than the section thickness of the second uniform thickness section; Described First Transition section is the thickening section of section thickness continuous transition; The first uniform thickness section, First Transition section, the second uniform thickness section are integral type structure, and it is that the steel plate of a different parts section thickness continuous transition is made.
2. Varying-thickness front longitudinal beam structure of automobile as claimed in claim 1, is characterized in that, also establishes thick section of the second transition phase and C grade after the second described uniform thickness section; The section thickness that C grade is thick section is greater than the section thickness of the second uniform thickness section, and the section thickness of the second transition phase is gradual change; Thick section of the second described transition phase and C grade are integral type structure with the first uniform thickness section, First Transition section, the second uniform thickness section, and it is that the steel plate of a different parts section thickness continuous transition is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849799.2U CN203727470U (en) | 2013-12-20 | 2013-12-20 | Automobile front longitudinal beam structure with variable thickness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320849799.2U CN203727470U (en) | 2013-12-20 | 2013-12-20 | Automobile front longitudinal beam structure with variable thickness |
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| CN203727470U true CN203727470U (en) | 2014-07-23 |
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| CN201320849799.2U Expired - Lifetime CN203727470U (en) | 2013-12-20 | 2013-12-20 | Automobile front longitudinal beam structure with variable thickness |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925141A (en) * | 2015-06-30 | 2015-09-23 | 宝山钢铁股份有限公司 | Variable-thickness automobile roof middle cross beam and manufacturing method thereof |
| CN106891996A (en) * | 2017-01-22 | 2017-06-27 | 中国第汽车股份有限公司 | A kind of continuous variable thickness automobile front longitudinal beam inner panel and its manufacture method |
| CN107391840A (en) * | 2017-07-20 | 2017-11-24 | 江苏大学 | A kind of thickness distribution design method in continuous variable thickness automobile front longitudinal beam energy-absorbing buffering area |
| CN107600186A (en) * | 2017-09-20 | 2018-01-19 | 江苏大学 | A kind of automobile Varying-thickness front longitudinal girder inner plate structure for meeting customizing functions requirement |
| CN110147650A (en) * | 2019-06-24 | 2019-08-20 | 上汽大众汽车有限公司 | The finite element modeling method of intensity adjustable material |
| CN111572642A (en) * | 2020-04-13 | 2020-08-25 | 吉利汽车研究院（宁波）有限公司 | Front longitudinal beam structure of engine room and automobile |
| CN111591346A (en) * | 2020-05-07 | 2020-08-28 | 南京航空航天大学 | Commercial truck steel-aluminum mixed structure frame |
| CN114015948A (en) * | 2021-11-04 | 2022-02-08 | 上海宝钢新材料技术有限公司 | Electro-galvanized variable-thickness plate automobile front longitudinal beam and preparation method thereof |
| CN114802446A (en) * | 2021-01-19 | 2022-07-29 | 宝山钢铁股份有限公司 | Differential-strength-difference thick hot-stamped automobile front longitudinal beam and preparation method and die thereof |
| CN117226265A (en) * | 2023-11-15 | 2023-12-15 | 沈阳东宝海星金属材料科技有限公司 | Variable-thickness automobile door ring and preparation method thereof |
-
2013
- 2013-12-20 CN CN201320849799.2U patent/CN203727470U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104925141A (en) * | 2015-06-30 | 2015-09-23 | 宝山钢铁股份有限公司 | Variable-thickness automobile roof middle cross beam and manufacturing method thereof |
| CN106891996A (en) * | 2017-01-22 | 2017-06-27 | 中国第汽车股份有限公司 | A kind of continuous variable thickness automobile front longitudinal beam inner panel and its manufacture method |
| CN107391840A (en) * | 2017-07-20 | 2017-11-24 | 江苏大学 | A kind of thickness distribution design method in continuous variable thickness automobile front longitudinal beam energy-absorbing buffering area |
| CN107391840B (en) * | 2017-07-20 | 2020-07-31 | 江苏大学 | Thickness distribution design method of energy absorption buffer area of continuously variable-thickness automobile front longitudinal beam |
| CN107600186A (en) * | 2017-09-20 | 2018-01-19 | 江苏大学 | A kind of automobile Varying-thickness front longitudinal girder inner plate structure for meeting customizing functions requirement |
| CN110147650A (en) * | 2019-06-24 | 2019-08-20 | 上汽大众汽车有限公司 | The finite element modeling method of intensity adjustable material |
| CN111572642A (en) * | 2020-04-13 | 2020-08-25 | 吉利汽车研究院（宁波）有限公司 | Front longitudinal beam structure of engine room and automobile |
| CN111591346A (en) * | 2020-05-07 | 2020-08-28 | 南京航空航天大学 | Commercial truck steel-aluminum mixed structure frame |
| CN114802446A (en) * | 2021-01-19 | 2022-07-29 | 宝山钢铁股份有限公司 | Differential-strength-difference thick hot-stamped automobile front longitudinal beam and preparation method and die thereof |
| CN114015948A (en) * | 2021-11-04 | 2022-02-08 | 上海宝钢新材料技术有限公司 | Electro-galvanized variable-thickness plate automobile front longitudinal beam and preparation method thereof |
| CN117226265A (en) * | 2023-11-15 | 2023-12-15 | 沈阳东宝海星金属材料科技有限公司 | Variable-thickness automobile door ring and preparation method thereof |
| CN117226265B (en) * | 2023-11-15 | 2024-01-23 | 沈阳东宝海星金属材料科技有限公司 | Variable-thickness automobile door ring and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |