CN105235551A - Automobile seat beam with unequal thickness and manufacturing method thereof - Google Patents
Automobile seat beam with unequal thickness and manufacturing method thereof Download PDFInfo
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- CN105235551A CN105235551A CN201510789476.2A CN201510789476A CN105235551A CN 105235551 A CN105235551 A CN 105235551A CN 201510789476 A CN201510789476 A CN 201510789476A CN 105235551 A CN105235551 A CN 105235551A
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Abstract
The invention relates to an automobile seat beam with an unequal thickness and a manufacturing method thereof. The automobile seat beam has a thin-wall structure and comprises an outside section of the beam, an outside transition section, a middle section of the beam, an inside transition section and an inside section of the beam in turn, wherein mounting holes for connecting a seat are formed in the outside section of the beam and the inside section of the beam; the outside section of the beam has an equal-thickness structure; the thickness of the outside section of the beam is continuously changed into the thickness of the middle section of the beam through the outside transition section; the inside section of the beam has the equal-thickness structure; the thickness of the inside section of the beam is continuously changed into the thickness of the middle section of the beam through the inside transition section; the thicknesses of the outside transition section and the inside transition section are gradually reduced from the thick areas at the two ends to thin areas towards the middle section of beam; the thickness of the middle section of beam is the minimum thickness of the whole seat beam. According to the invention, through the design for the parts in different thicknesses, the demands on impact safety and mounting strength of the automobile seat beam are met, and meanwhile, light weight of the parts is realized.
Description
Technical field
The invention belongs to the Design of Auto Parts and manufacture field, particularly a kind of Varying-thickness motor vehicle seat cross-member and manufacture method thereof.
Background technology
In the test of C-NCAP side collision, movable counterguard is with the speed impacts test vehicle of 50km/h, seat beam can form the effective support to threshold in side collision process, simultaneously due to the installation requirement of seat beam itself, seat beam needs to be tested by a series of seat intensity, to avoid the seat caused by unforeseen circumstancess such as collisions to come off, thus generation produces damage to chaufeur or occupant.Therefore, the version of seat beam is tested directly related to automotive side face collision safety and seat correlation intensity., during motor vehicle seat cross-member design, consider from the angle of safety for this reason, usually to the high strength steel material adopted compared with heavy thickness, or chair mounted brace panel can be increased at Seat-fixed point place, two ends.
And simultaneously along with the increase of automobile pollution, environmental problem is paid close attention to by automobile vendor and user vehicle, automotive light weight technology is the effective measures of energy-conserving and environment-protective, is also the inexorable trend of automotive technology development.How motor vehicle seat cross-member realizes it structure lightened, take into account it becomes a major challenge in structural strength and collision performance requirement simultaneously.
On current auto body, the mode that motor vehicle seat cross-member is normally shaped by cold stamping is processed, and its common cross section is " several " font.
Chinese patent notification number 102935864A discloses a kind of motor vehicle seat cross-member assembly structure, include a seat beam and seat front mounting plate assembly, seat front mounting plate assembly is arranged on seat beam body by projection welding spiral shell, and passes through the mode weld together of spot welding.
Chinese patent notification number is 201321084 disclose a kind of segmental vehicle front chair crossbeam, by interior brace panel and front external reinforcing plate for car before the installation of the driver's seat of entablatrance and its both sides are formed cross beam of front seat assembly, at its welding region because part thickness superposes the booster action realized Seat-fixed point by spot welding.
By above structure, motor vehicle seat cross-member is designed, due to the requirement of side collision and installation strength, often need to strengthen its end positions.Because current most seat beam all adopts larger thickness of slab, increase the form of brace panel at two ends, therefore, its weight of Varying-thickness motor vehicle seat cross-member in relative the present invention is comparatively large simultaneously, and the cost in additional brace panel processing, welding is higher.
Summary of the invention
The object of the present invention is to provide a kind of Varying-thickness motor vehicle seat cross-member and manufacture method thereof, reach the requirement of motor vehicle seat cross-member to crash survivability and installation strength by the design of part different-thickness, the lightweight of part can be realized simultaneously.
For achieving the above object, technical scheme of the present invention is as follows:
A kind of Varying-thickness motor vehicle seat cross-member, it is thin-wall construction, comprises successively, cross rail outer section, outside transition phase, crossbeam stage casing, inner transition section, cross rail inner section; Cross rail outer section, cross rail inner Duan Shangshe are for the mounting hole of connecting chair; Described cross rail outer section is equal thickness structure, cross rail outer section by outside transition phase by thickness consecutive variations to the thickness in crossbeam stage casing; Described cross rail inner section is equal thickness structure, cross rail inner section by inner transition section by thickness consecutive variations to the thickness in crossbeam stage casing; Thick district reduces gradually to the thin district in crossbeam stage casing from two ends for described outside transition phase and inner transition section thickness; The thickness in described crossbeam stage casing is the most thin section position of whole seat beam.
Preferably, described cross rail outer section and cross rail inner section thickness are 1.5 ~ 3.0 millimeters.
Preferably, described outer, inner transition section thickness is 0.7 ~ 2.0 millimeter.
Preferably, the thickness in described crossbeam stage casing is 0.7 ~ 2.0 millimeter.
Preferably, the variation in thickness gradient of described inner transition section and outside transition zone is 1:50 ~ 1:200, i.e. variation in thickness 1mm, and the length of transition region is 50 ~ 200mm.
Preferably, described seat beam structural section is " several " font.
Preferably, establish can be counter-bending and improve the reinforced rib of detail rigidity described seat beam top or side.
Preferably, described seat beam material is steel material.Described steel material example comprises high strength steel, aluminum alloy or magnesium alloy.
In addition, described seat beam segmentum laterale, outside transition phase, crossbeam stage casing, inner transition section and cross rail inner section are one of the forming.
The manufacture method of Varying-thickness motor vehicle seat cross-member of the present invention, it comprises: select a thickness to be the coiled strip at more than 1.1 times, the thickest position of seat beam, cross rail outer section thickness is obtained by rolling, and be transitioned into the thickness in crossbeam stage casing thus, then by the thickness transitions in crossbeam stage casing to the thickness of cross rail inner section; The rolling of next cross rail inner section can be started after rolling completes cross rail inner section, afterwards by the thickness transitions of cross rail inner section to the thickness in crossbeam stage casing, again by the thickness transitions in crossbeam stage casing to the thickness of cross rail outer section, thus repeatedly, the Varying-thickness coiled strip that a volume meets designing requirement is finally obtained; Then, described Varying-thickness coiled strip is sheared on continuous shear stress line, obtains the Varying-thickness plate of a series of variation in thickness; Finally, described Varying-thickness plate is formed, form Varying-thickness seat beam.
Preferably, the thickness of described cross rail inner section and segmentum laterale is 1.5 ~ 3.0 millimeters, and the thickness in crossbeam stage casing is between 0.7 ~ 2.0 millimeter; The variation in thickness gradient of inner transition section and outside transition zone is 1:50 ~ 1:200, i.e. variation in thickness 1mm, and the length of transition region is 50 ~ 200mm.
In addition, the processing mode forming employing to described Varying-thickness plate is cold stamping or drop stamping.
The seat beam that Varying-thickness seat beam of the present invention utilizes local structure thickness to strengthen to resist side collision impact and and meet motor-vehicle seat system requirement of strength, simultaneously reduce number of parts realize light-weight design.
Motor vehicle seat cross-member of the invention process is thin-wall construction, comprises cross rail outer section, outside transition phase, crossbeam stage casing, inner transition section and cross rail inner section.
Cross rail outer section is connected with gusset, is provided with mounting hole in cross rail outer section simultaneously, and for ensureing the assembly quality of attachment point, this section is designed to equal thickness structure; Cross rail outer section by outside transition phase by thickness consecutive variations to the thickness in crossbeam stage casing.
Cross rail inner section is connected with passage in body platform, arranges mounting hole in cross rail inner section simultaneously, and for ensureing the assembly quality of attachment point, this section is designed to equal thickness structure; Cross rail inner section by inner transition section by thickness consecutive variations to the thickness in crossbeam stage casing.
Consider that cross rail outer section and cross rail inner section need ensure installation strength and keep collision characteristic preferably, design thickness is thicker, and according to the strength grade height of material therefor, thickness is 1.5 ~ 3.0 millimeters; The thickness in crossbeam stage casing is the thinnest design of whole seat beam.The thickness of the left and right transition phase of seat beam is that the thin district from thick district, two ends in the middle part of seat beam reduces gradually.
Seat beam structural section of the present invention is designed to " several " font, simultaneously can according to composite bending modulus principle and increase crashproof requirement at an upper portion thereof or side increase counter-bending and improve the reinforced rib of detail rigidity.
Beneficial effect of the present invention:
The thin-wall construction of motor vehicle seat cross-member of the present invention increases gradually from centre to both sides, can ensure that the collision safety performance of seat beam and intensity can strengthen gradually from middle part to both sides, thus meets the requirement of seat beam to side collision and chair mounted intensity.
Motor vehicle seat cross-member of the present invention adopts rolling Varying-thickness plate, and the abrupt changes in thickness that surface does not have weld seam to cause, its surface quality is good, and Joint strenght is high, homogenous material properties, and intensity distribution is continuous.
Motor vehicle seat cross-member of the present invention adopts the design of material of non-uniform thickness, effectively reduces number of parts, farthest decreases materials'use, and light weight effect is good.
Motor vehicle seat cross-member of the present invention is one piece of plate shaping, compares existingly to install the structure of brace panel in both sides, decreases number of parts, reduces die cost, decrease welding sequence, can effective improving production efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of Varying-thickness motor vehicle seat cross-member of the present invention.
Fig. 2 is the schematic diagram of Varying-thickness motor vehicle seat cross-member transition phase of the present invention.
Fig. 3 is the schematic diagram of Varying Thickness Plates material base material of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of this technology is described in further detail.
The embodiment that the present invention illustrates is a part of embodiment of the present invention, instead of whole embodiments.
See Fig. 1, it is depicted as the Varying-thickness motor vehicle seat cross-member structural representation in the present invention one example.Chair crossbeam of the present invention comprises cross rail outer section 1, outside transition phase 2, crossbeam stage casing 3, inner transition section 4 and cross rail inner section 5 successively, and cross rail outer section 1, cross rail inner section 5 are provided with mounting hole 6,7.
Wherein, the thickness of cross rail outer section 1 is the first thickness t1, outside transition phase 2 is the transitional region in cross rail outer section and crossbeam stage casing 3, the thickness in crossbeam stage casing 3 is equal thickness or Varying-thickness (the second thickness t2), inner transition section 4 is the transitional region of crossbeam stage casing 3 and cross rail inner section 5, and the thickness of cross rail inner section 5 is the 3rd thickness t3.
Second thickness t2 is less than the first thickness t1 and the 3rd thickness t3, and the first thickness t1 and the 3rd thickness t3 is between 1.5 ~ 2.5mm in the present embodiment, and the second thickness t2 is between 1.0 ~ 1.5mm.
Wherein, seat beam part maximum ga(u)ge t1, t3 and minimum thickness t2 thickness difference when designing is 2:1.
In seat beam of the present invention, both sides transition phase is the transitional region for adapting to set by body thickness change, the thickness of outside transition phase 2 and inner transition section 4 is between the first thickness t1 and the second thickness t2 in the present embodiment, and variation in thickness is linear transitions, as shown in Figure 2.
The variation in thickness gradient of outside transition phase 2 and inner transition section 4 is 1:100, i.e. variation in thickness 1mm in the present embodiment, and length that is outer, inner transition section 2,4 is 100mm.
Described seat beam structural section is " several " font in the present embodiment, does not arrange reinforcement structure, is understandable that in other embodiments of the invention, can according to composite bending modulus principle and increase crashproof requirement at an upper portion thereof or side increase reinforced rib.
The manufacture method of a kind of Varying-thickness motor vehicle seat cross-member of the present invention, comprises the following steps:
A) select a volume original thickness t0 to be the first thickness t11.1 times of coiled strip above, obtain coiled strip thickness by rolling and be transitioned into the second thickness t2 by the first thickness t1, then be transitioned into the 3rd thickness t3 by the second thickness t2; After complete 3rd thickness of rolling, the rolling in next 3rd thickness t3 region can be started, be transitioned into the second thickness t2 by the 3rd thickness t3 afterwards, then be transitioned into the first thickness t1 by the second thickness t2, thus repeatedly, the Varying-thickness coiled strip that a volume meets designing requirement is finally obtained;
B) described Varying-thickness coiled strip is sheared on continuous shear stress line, obtain a series of thickness and be transitioned into from the first thickness t1 the Varying Thickness Plates material base material that the second thickness t2 is transitioned into the 3rd thickness t3 again;
C) form described Varying-thickness plate, form Varying-thickness seat beam, described seat beam includes cross rail outer section 1, outside transition phase 2, crossbeam stage casing 3, inner transition section 4 and cross rail inner section 5.Wherein, the thickness of cross rail outer section 1 is the first thickness t1, outside transition phase 2 is the transitional region in cross rail outer section 1 and crossbeam stage casing 3, the thickness in crossbeam stage casing 3 can be equal thickness (the second thickness t2), inner transition section 4 is the transitional region of crossbeam stage casing 3 and cross rail inner section 5, and the thickness of cross rail inner section 1 is the 3rd thickness t3.
Wherein, the second thickness t2 is less than the first thickness t1 and the 3rd thickness t3, and the first thickness t1 and the 3rd thickness t3 is between 1.5 ~ 2.5mm in the present embodiment, and the second thickness t2 is between 1.0 ~ 1.5mm.
Seat beam part maximum ga(u)ge t1, t3 and minimum thickness t2 thickness difference when designing are 2:1.
In seat beam, both sides transition phase is the transitional region for adapting to set by seat beam variation in thickness, and the thickness of outside transition phase 2 and inner transition section 4 is between the first thickness t1 and the second thickness t2 in the present embodiment, as shown in Figure 2.
Wherein, the variation in thickness gradient of outside transition phase 2 and inner transition section 4 is 1:100, i.e. variation in thickness 1mm in the present embodiment, and length that is outer, inner transition section 2,4 is 100mm; This variation in thickness gradient also can set according to particular/special requirement;
The present invention makes motor vehicle seat cross-member by the plate made by rolling technique, such motor vehicle seat cross-member has different thickness distribution in the different cross section position of vehicle body transverse direction, thus vehicle body side collision critical area and Seat-fixed point position all there is larger thickness, reduce the intrusion volume of seat position in side collision thus, increase the intensity of Seat-fixed point position simultaneously; Cancel the reinforcement of seat beam end positions simultaneously, thus reduce number of parts and realize light-weight design.This seat beam structure can not only meet the requirement of automotive side face collision safety preferably, and structure is simple, adopts continuous variable thickness plate to make, the surdimensionnement in number of parts can be avoided, reduce motor vehicle seat cross-member cost of manufacture, and light weight effect is good.
The present invention adopts the same Varying-thickness plate of continuous thickness transitions between different parts different-thickness, different-thickness position to make the method for motor vehicle seat cross-member part, also can on other framing members of automobile, as the body structural members such as roof cross beam, sill strip, B post are applied, more can be applied in other physical constructions.
Claims (13)
1. a Varying-thickness motor vehicle seat cross-member, it is thin-wall construction, it is characterized in that, comprises successively, cross rail outer section, outside transition phase, crossbeam stage casing, inner transition section, cross rail inner section; Cross rail outer section, cross rail inner Duan Shangshe are for the mounting hole of connecting chair;
Described cross rail outer section is equal thickness structure, cross rail outer section by outside transition phase by thickness consecutive variations to the thickness in crossbeam stage casing;
Described cross rail inner section is equal thickness structure, cross rail inner section by inner transition section by thickness consecutive variations to the thickness in crossbeam stage casing; Thick district reduces gradually to the thin district in crossbeam stage casing from two ends for described outside transition phase and inner transition section thickness;
The thickness in described crossbeam stage casing is the most thin section position of whole seat beam.
2. Varying-thickness motor vehicle seat cross-member as claimed in claim 1, it is characterized in that, described cross rail outer section and cross rail inner section thickness are 1.5 ~ 3.0 millimeters.
3. Varying-thickness motor vehicle seat cross-member as claimed in claim 1, is characterized in that, described outer, inner transition section thickness is 0.7 ~ 2.0 millimeter.
4. Varying-thickness motor vehicle seat cross-member as claimed in claim 1, it is characterized in that, the thickness in described crossbeam stage casing is 0.7 ~ 2.0 millimeter.
5. Varying-thickness motor vehicle seat cross-member as claimed in claim 1, it is characterized in that, the variation in thickness gradient of described inner transition section and outside transition zone is 1:50 ~ 1:200, i.e. variation in thickness 1mm, and the length of transition region is 50 ~ 200mm.
6. Varying-thickness motor vehicle seat cross-member as claimed in claim 1, it is characterized in that, described seat beam structural section is " several " font.
7. the Varying-thickness motor vehicle seat cross-member as described in claim 1 or 6, is characterized in that, described seat beam top or side are established can the counter-bending reinforced rib with improving detail rigidity.
8. the Varying-thickness motor vehicle seat cross-member as described in claim 1 or 6 or 7, is characterized in that, described seat beam material is steel material.
9. Varying-thickness motor vehicle seat cross-member as claimed in claim 8, it is characterized in that, described steel material example comprises high strength steel, aluminum alloy or magnesium alloy.
10. the Varying-thickness motor vehicle seat cross-member as described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that, described seat beam segmentum laterale, outside transition phase, crossbeam stage casing, inner transition section and cross rail inner section are one of the forming.
11. as the manufacture method of the Varying-thickness motor vehicle seat cross-member in claim 1 ~ 10 as described in any one, it is characterized in that, comprise: select a thickness to be the coiled strip at more than 1.1 times, the thickest position of seat beam, cross rail outer section thickness is obtained by rolling, and be transitioned into the thickness in crossbeam stage casing thus, then by the thickness transitions in crossbeam stage casing to the thickness of cross rail inner section; The rolling of next cross rail inner section can be started after rolling completes cross rail inner section, afterwards by the thickness transitions of cross rail inner section to the thickness in crossbeam stage casing, again by the thickness transitions in crossbeam stage casing to the thickness of cross rail outer section, thus repeatedly, the Varying-thickness coiled strip that a volume meets designing requirement is finally obtained; Then, described Varying-thickness coiled strip is sheared on continuous shear stress line, obtains the Varying-thickness plate of a series of variation in thickness; Finally, described Varying-thickness plate is formed, form Varying-thickness seat beam.
The manufacture method of 12. Varying-thickness motor vehicle seat cross-member as claimed in claim 10, it is characterized in that, the thickness of described cross rail inner section and segmentum laterale is 1.5 ~ 3.0 millimeters, the thickness in crossbeam stage casing is between 0.7 ~ 2.0 millimeter; The variation in thickness gradient of inner transition section and outside transition zone is 1:50 ~ 1:200, i.e. variation in thickness 1mm, and the length of transition region is 50 ~ 200mm.
The manufacture method of 13. Varying-thickness motor vehicle seat cross-member as claimed in claim 10, is characterized in that, the processing mode described Varying-thickness plate being formed to employing is cold stamping or drop stamping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510789476.2A CN105235551A (en) | 2015-06-30 | 2015-11-17 | Automobile seat beam with unequal thickness and manufacturing method thereof |
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| CN201510385454 | 2015-06-30 | ||
| CN201510385454X | 2015-06-30 | ||
| CN201510789476.2A CN105235551A (en) | 2015-06-30 | 2015-11-17 | Automobile seat beam with unequal thickness and manufacturing method thereof |
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| CN201510789476.2A Pending CN105235551A (en) | 2015-06-30 | 2015-11-17 | Automobile seat beam with unequal thickness and manufacturing method thereof |
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| CN110895623A (en) * | 2018-09-07 | 2020-03-20 | 东汉新能源汽车技术有限公司 | Design method of automobile stand column |
| CN112171190A (en) * | 2020-09-18 | 2021-01-05 | 山东华盛荣镁业科技有限公司 | Magnesium-based seat privacy cover and preparation process thereof |
| CN113857287A (en) * | 2021-08-24 | 2021-12-31 | 无锡市源隆金属制品有限公司 | Automobile seat frame beam and production process thereof |
| CN115257963A (en) * | 2022-07-20 | 2022-11-01 | 岚图汽车科技有限公司 | Front floor assembly and vehicle |
| US11623729B2 (en) * | 2018-06-29 | 2023-04-11 | Airbus Operations Gmbh | Method for producing a crossmember for a vehicle and a crossmember for a vehicle |
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Application publication date: 20160113 |