CN102658808B - Split welding type car door anti-collision beam - Google Patents
Split welding type car door anti-collision beam Download PDFInfo
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- CN102658808B CN102658808B CN201210158742.8A CN201210158742A CN102658808B CN 102658808 B CN102658808 B CN 102658808B CN 201210158742 A CN201210158742 A CN 201210158742A CN 102658808 B CN102658808 B CN 102658808B
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- collision prevention
- prevention girders
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Abstract
The invention relates to a split welding type car door anti-collision beam, which is fixedly connected with an inner plate of a car door by welding spots, rivets or bolts. The anti-collision beam consists of an anti-collision beam outer plate and an anti-collision beam cover plate, wherein the anti-collision beam outer plate is manufactured by a bending machining technology, the cross section of the anti-collision beam outer plate is U-shaped and comprises a flange, and the anti-collision beam cover plate is welded on the flange of the anti-collision beam outer plate. A sealed space formed by the anti-collision beam outer plate and the cover plate is filled with light porous material. The anti-collision beam outer plate is divided into four sections according to performance requirement, i.e. an outer plate left first section, an outer plate left second section, an outer plate right second section and an outer plate right first section respectively from left to right, the four sections are connected into a whole in the manner of laser split welding, and the material can be a high-strength steel plate, aluminum plate or magnesium plate. Compared with the prior art, the split welding type car door anti-collision beam can extremely reduce the deformation of the car door when a car is collided, can enhance the anti-pit performance of the car door, and is simple in structure, and high in reliability.
Description
Technical field
The present invention relates to a kind of Automobile part of butt-welding type, relate in particular to a kind of butt-welding type door anti-collision joist that is arranged on car door inner side.
Background technology
Safety, energy-saving and environmental protection are three large themes of automobile industry development, and collision safety problem is the most important thing, and Ge great car company is being devoted to improve the crash survivability of automobile always.At head-on crash, the side collision of automobile, in offset collision, because the distortion of automobile door structure can affect driver or passenger's injured degree greatly, when serious, can threaten driver or passenger's life security.
At present, in order to address the above problem, traditional settling mode is, on inner plate of car door, install crash bar or Crashworthy plate additional, strengthen the strength and stiffness of door-plate, improve the force-bearing situation of car door and the bang path of power, reduce the distortion of car door, improve the energy absorption characteristics of car door.But, in conventional confguration, no matter be " bar " formula structure or " beam " formula structure, all there is certain technological deficiency." bar " formula collision prevention girders is generally a pipe, and two ends are connected on inner plate of car door by connection bracket.This structural shielding space is less, and likely forms wedge angle at breaking part, occupant's safety is formed to hidden danger, and its welding performance is also poor.In side impact process, also may occur that support comes off or weld failure, energy-absorbing effect is reduced greatly." plate ", although the design of formula structure is all simpler with layout, owing to adopting opening section design, bending resistance or torsion stiffness are poor, are difficult to reach the desirable crashproof requirement of current arrangements for automotive doors.
The shortcoming of the collision prevention girders of existing in order to overcome " bar " formula and " plate " formula structure, patent of invention 200610096205.X has proposed a kind of Crashworthy plate that inner chamber is closed loop that is furnished with on inner plate of car door, this Crashworthy plate can be in the head-on crash of automotive front, offset collision or side collision, there is good longitudinal rigidity and bending stiffness, strengthen the impact strength of door panel, there is good resistance to bending, can reduce the distortion of car door, can also increase the static extrusion capability of car door.Although the scheme that patent of invention 200610096205.X proposes has overcome the defect of traditional collision prevention girders to a certain extent, but the crashproof outside plate that forms this collision prevention girders is to be formed by the sheet material manufacture of same thickness and same material.In fact, collision prevention girders is at head-on crash, the side collision of automobile, in offset collision process, the force-bearing situation at each position is different, and differ larger, traditional method of designing is to meet the strength of material of performance requriements of the dangerous position of collision prevention girders and the sheet thickness selection foundation as strength of material and the sheet thickness of whole collision prevention girders.Obviously, it is unscientific that each position of the crashproof outside plate of collision prevention girders adopts the sheet material design plan of same thickness and strength of material, can not give full play to the potential of material, causes certain waste.On the other hand, traditional collision prevention girders structure is hollow structure, if will improve the amount of energy of collision prevention girders, need to increase the thickness of slab of collision prevention girders parts, or replace the higher material of strength grade, this design must cause the increase of impact force and the increase of collision prevention girders quality.Therefore, it is light that reality need to obtain a kind of quality, the more collision prevention girders of energy absorption.
Summary of the invention
The object of the present invention is to provide a kind of vehicle door anti-collision joist of butt-welding type, guaranteeing under the prerequisite of collision prevention girders performance, reduce as far as possible weight, design and the manufacture difficulty of door anti-collision joist, reduce the cost of vehicle door anti-collision joist, reach the weight-saving design goal of car door simultaneously.
A kind of vehicle door anti-collision joist is made up of collision prevention girders outside plate and collision prevention girders cover plate, collision prevention girders outside plate is connected by electric welding with described collision prevention girders cover plate, collision prevention girders outside plate is U-shaped, being connected of the inner plate of car door of one end of collision prevention girders and hinge stiffening plate side, the other end is connected with the collision prevention girders installation base of the car door opening end of inner plate of car door, cross section of collision prevention girders outside plate and collision prevention girders cover plate formation bonded to each other is hollow and thin-walled structure logical in closed loop and inner chamber, collision prevention girders cover plate is a long rectangular shape, collision prevention girders outside plate is by the first from left section, the second from left section, right one section and right two sections of compositions, above-mentioned four sections are connected into an entirety by laser assembly solder technical battery.
The first from left section, the second from left section, one section, the right side and right two sections of employings of collision prevention girders outside plate form with the different thick plate welding of material, and wherein the first from left section is less than respectively the second from left section of outside plate and the thickness of slab on two sections, the right side with the thickness of slab of right a section.The first from left section, the second from left section, one section, the right side and right two sections of employings of collision prevention girders outside plate form with the plate welding of thick different material, and wherein the first from left section is less than respectively the second from left section of outside plate and the strength of material grade on two sections, the right side with the strength of material grade of right a section.The first from left section of collision prevention girders outside plate, the second from left section, right one section and right two sections adopt the plate welding of different thick different materials to form, and wherein the comprehensive strength of the plate of the first from left section and right a section is less than the comprehensive strength of the plate of right two sections of the second from left section and outside plate.
In hollow and thin-walled structure between collision prevention girders outside plate and described collision prevention girders cover plate, fill metal foam aluminum, between preferred foams aluminium and collision prevention girders outside plate and collision prevention girders cover plate, be connected by adhesives.The density value of metal foam aluminum is 0.4g/cm
3-0.6g/cm
3.The flange width h of collision prevention girders outside plate is not less than 20mm.
The invention has the beneficial effects as follows: the present invention is according to the loading characteristic of each section of door anti-collision joist, collision prevention girders has been divided into four sections from left to right, the thickness of the plate of each section and material are selected according to the performance requriements of collision prevention girders, give full play to the material potential of each section, the at utmost low weight of collision prevention girders, meanwhile, by filled and process aluminum in the enclosure space of collision prevention girders, further improved the deformation stability and the crash-worthiness that has improved collision prevention girders of collision prevention girders.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention and installation site;
The structural representation of Fig. 2 collision prevention girders;
The A-A schematic cross-section of Fig. 3 collision prevention girders;
The specific embodiment
As shown in Figure 1, on inner plate of car door 1, being furnished with cross section is butt-welding type door anti-collision joist logical in closed loop and inner chamber, and collision prevention girders is connected mutually with inner plate of car door 1.Collision prevention girders is by crashproof outside plate 3 and crashproof cover plate 2 is bonded to each other forms, and crashproof cover plate 2 is connected with inner plate of car door 1.The crashproof cover plate 2 of collision prevention girders is the rectangular plate of a strip, collision prevention girders outside plate 3 is U-shaped, collision prevention girders outside plate 3 is welded into the rectangular flat of a block length by four rectangular flats, this collision prevention girders outside plate 3 is divided into the first from left section, the second from left section, right one section and right two sections, then the rectangular flat after welding is carried out to bending and form U-shaped structure, in order to ensure welding operability and soldering reliability between collision prevention girders outside plate 3 and collision prevention girders cover plate 2, flange width h(Fig. 3 of U-shaped) be not less than 20mm, spot pitch between collision prevention girders outside plate 3 and collision prevention girders cover plate 2 can be arranged as required, being connected of the inner plate of car door of connection location one end of collision prevention girders and hinge stiffening plate 4 sides, particular location is positioned at the midway location of two hinges, the other end is connected with the collision prevention girders installation base 5 of the car door opening end of inner plate of car door 1, it is skewed that entirety becomes, collision prevention girders longitudinal centerline becomes 10 ° to 30 ° with horizontal direction angle, be preferably 15 °.Collision prevention girders cover plate 2 two ends are connected by spot welding, riveted joint or bolt with inner plate of car door 1.Because the first from left section of collision prevention girders outside plate is joined by collision prevention girders cover plate 2 and inner plate of car door 1 with right one section, rigidity has obtained reinforcement, compatibility of deformation in order to ensure whole door anti-collision joist in deformation process, actv. traditional load and moment of flexure, and farthest reduce the weight of crashworthiness, learn by car load side collision simulation analysis and experimental result, in the welding design process of crashworthiness, need to meet following principle: if the outside plate of collision prevention girders forms with the different thick plate welding of material, require the first from left section of the outside plate of collision prevention girders to be less than respectively the second from left section of outside plate and the thickness of slab of right two sections with the thickness of slab of right a section, if the outside plate of collision prevention girders forms with the plate welding of thick different material, require the first from left section of collision prevention girders outside plate and the strength of material grade of right a section to be less than respectively the second from left section of outside plate and the strength of material grade of right two sections, if the plate welding of the different thick different material of outside plate of collision prevention girders forms, require the comprehensive strength of the plate of right one section of outside plate the first from left section of collision prevention girders and outside plate to be less than the comprehensive strength of the plate of right two sections of outside plate the second from left section and outside plate.The collision energy-absorbing of the collision prevention girders of hollow thin-wall structure, load transmission capacity, bending stiffnesies etc. have certain limitation.If strengthen the collision energy-absorbing characteristic of collision prevention girders, load transmission capacity, bending stiffness etc., conventional method is the wall thickness that increases hollow collision prevention girders thin-wall construction, but the thing followed is weight and the cost that has increased door anti-collision joist.Because metal foamed aluminium has lower density, high specific strength and stiffness-to-density ratio and good energy absorption characteristics, research shows that metal foamed aluminium is inserted to thin-wall construction can not only be strengthened the deformation stability of hollow thin-wall structure and improve deformation pattern, and can improve the energy absorption capacity of hollow thin-wall structure, it is high that the energy of its absorption forms its hollow thin-wall structure and the energy summation that absorbs in independent stand under load situation respectively of foamed aluminium.Light filling metal foam aluminum in the enclosure space of the present invention between collision prevention girders outside plate and cover plate, the density of metal foam aluminum can be selected as required, if desired when collision prevention girders transmission is larger load, moment of flexure and the more energy of absorption, select highdensity metal foam aluminum, density value is 0.8g/cm
3; If desired when the energy of the load of collision prevention girders transmission, moment of flexure and absorption is not too high, select low-density metal foam aluminum to further reduce weight and the cost of collision prevention girders, density is 0.2g/cm
3; Be preferably generally 0.4g/cm with density value
3-0.6g/cm
3between the metal foam aluminum of intermediate density.The metal foamed aluminium of filling is connected by adhesive agent with thin-wall construction.
Claims (4)
1. a vehicle door anti-collision joist, it comprises collision prevention girders outside plate (3) and collision prevention girders cover plate (2), described collision prevention girders outside plate is connected by electric welding with described collision prevention girders cover plate, described collision prevention girders outside plate is U-shaped, one end of described collision prevention girders is connected with the inner plate of car door (1) of hinge stiffening plate (4) side, the other end is connected with the collision prevention girders installation base (5) of the car door opening end of inner plate of car door (1), it is skewed that entirety becomes, collision prevention girders longitudinal center and horizontal direction angle are that 10 degree are to 30 degree, it is characterized in that, cross section of described collision prevention girders outside plate and collision prevention girders cover plate formation bonded to each other is hollow and thin-walled structure logical in closed loop and inner chamber, described collision prevention girders cover plate is a long rectangular shape, described collision prevention girders outside plate is by the first from left section, the second from left section, right one section and right two sections of compositions, above-mentioned four sections are connected into an entirety by laser assembly solder technical battery, wherein, the first from left section of described collision prevention girders outside plate, the second from left section, right one section forms with the different thick plate welding of material with right two sections of employings, wherein the first from left section is less than respectively the second from left section of outside plate and the thickness of slab of right two sections with the thickness of slab of right a section, or the first from left section of described collision prevention girders outside plate, the second from left section, one section, the right side and right two sections of employings form with the plate welding of thick different material, wherein the first from left section is less than respectively the second from left section of outside plate and the strength of material grade on two sections, the right side with the strength of material grade of right a section, or the first from left section of described collision prevention girders outside plate, the second from left section, right one section and right two sections adopt the plate welding of different thick different materials to form, wherein the comprehensive strength of the plate of the first from left section and right a section is less than the comprehensive strength of the plate of right two sections of the second from left section and outside plate.
2. collision prevention girders as claimed in claim 1, is characterized in that, in the hollow and thin-walled structure between described collision prevention girders outside plate and described collision prevention girders cover plate, fills metal foam aluminum, between foamed aluminium and collision prevention girders outside plate and collision prevention girders cover plate, is connected by adhesives.
3. collision prevention girders as claimed in claim 2, is characterized in that, the density value of described metal foam aluminum is 0.4g/cm
3-0.6g/cm
3.
4. collision prevention girders as claimed in claim 3, is characterized in that, the flange width h of described collision prevention girders outside plate is not less than 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158742.8A CN102658808B (en) | 2012-05-21 | 2012-05-21 | Split welding type car door anti-collision beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210158742.8A CN102658808B (en) | 2012-05-21 | 2012-05-21 | Split welding type car door anti-collision beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102658808A CN102658808A (en) | 2012-09-12 |
| CN102658808B true CN102658808B (en) | 2014-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210158742.8A Expired - Fee Related CN102658808B (en) | 2012-05-21 | 2012-05-21 | Split welding type car door anti-collision beam |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3035172B1 (en) * | 2015-04-20 | 2017-11-24 | Peugeot Citroen Automobiles Sa | EXTRUDED REINFORCING BEAM WITH PROGRAMMED DEFORMATION |
| CN105691165A (en) * | 2016-03-19 | 2016-06-22 | 安徽国德新能源汽车有限公司 | Car door anti-collision beam structure with good buffer performance and production process thereof |
| CN106042855A (en) * | 2016-06-12 | 2016-10-26 | 洛阳北方易初摩托车有限公司 | Four-wheeler side anti-collision structure |
| CN106004369A (en) * | 2016-07-05 | 2016-10-12 | 华南理工大学 | Safety door structure made of PDCPD (Polydicyclopentadiene) material |
| EP3312033B1 (en) * | 2016-10-21 | 2020-07-29 | Magna Steyr Fahrzeugtechnik AG & Co KG | Vehicle door |
| CN109515128B (en) * | 2018-10-25 | 2020-04-10 | 北京长城华冠汽车科技股份有限公司 | New energy automobile's door frame assembly and new energy automobile |
| CN112009217A (en) * | 2020-07-23 | 2020-12-01 | 中国第一汽车股份有限公司 | Composite material vehicle door anti-collision beam and preparation method thereof |
| CN115303035A (en) * | 2022-06-30 | 2022-11-08 | 重庆长安汽车股份有限公司 | Car door anti-collision beam with energy-absorbing inner core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1428707A1 (en) * | 2002-12-09 | 2004-06-16 | Ford Global Technologies, Inc. | Vehicle door assembly |
| CN101089417A (en) * | 2007-07-17 | 2007-12-19 | 东南大学 | Energy absorber of filling deformed foam aluminium and aluminium alloy |
| CN101303055A (en) * | 2008-06-27 | 2008-11-12 | 哈尔滨工业大学 | Combined buffer of polyporous material stuffing cup-shaped thin wall structure |
| CN201923053U (en) * | 2010-12-20 | 2011-08-10 | 郑州日产汽车有限公司 | Automobile door impact bar |
| CN102390434A (en) * | 2011-10-19 | 2012-03-28 | 湖南大学 | Front longitudinal beam structure for automobiles |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0424118A (en) * | 1990-05-16 | 1992-01-28 | Yamakawa Ind Co Ltd | Automobile door guard |
| JPH0481322A (en) * | 1990-07-23 | 1992-03-16 | Hino Motors Ltd | Door of automobile |
-
2012
- 2012-05-21 CN CN201210158742.8A patent/CN102658808B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1428707A1 (en) * | 2002-12-09 | 2004-06-16 | Ford Global Technologies, Inc. | Vehicle door assembly |
| CN101089417A (en) * | 2007-07-17 | 2007-12-19 | 东南大学 | Energy absorber of filling deformed foam aluminium and aluminium alloy |
| CN101303055A (en) * | 2008-06-27 | 2008-11-12 | 哈尔滨工业大学 | Combined buffer of polyporous material stuffing cup-shaped thin wall structure |
| CN201923053U (en) * | 2010-12-20 | 2011-08-10 | 郑州日产汽车有限公司 | Automobile door impact bar |
| CN102390434A (en) * | 2011-10-19 | 2012-03-28 | 湖南大学 | Front longitudinal beam structure for automobiles |
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| CN102658808A (en) | 2012-09-12 |
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Granted publication date: 20140702 Termination date: 20160521 |