CN102205855B - Aerated automobile body longitudinal beam - Google Patents
Aerated automobile body longitudinal beam Download PDFInfo
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- CN102205855B CN102205855B CN 201110024177 CN201110024177A CN102205855B CN 102205855 B CN102205855 B CN 102205855B CN 201110024177 CN201110024177 CN 201110024177 CN 201110024177 A CN201110024177 A CN 201110024177A CN 102205855 B CN102205855 B CN 102205855B
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- longitudinal beam
- airbag
- longeron
- automobile body
- body longitudinal
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Abstract
The invention relates to an automobile body structure, in particular to an automobile body longitudinal beam structure provided with a built-in air bag, and solves the problem that the fixed rigidity of the conventional automobile body longitudinal beam cannot adapt to multiform collision energy absorption. The automobile body longitudinal beam structure comprises an energy-absorbing longitudinal beam front part connected with a front bumper, and a high-rigidity longitudinal beam rear part connected with a front baffle plate. The interior of the longitudinal beam is hollow. The automobile body longitudinal beam structure is characterized in that: an air bag is arranged in the longitudinal beam front part; the air bag is aerated to ensure that the periphery of the air bag is clung to the inner wall of the longitudinal front part; a pressure sensor is arranged in the air bag; and a controllable valve opened and closed by a pressure sensor is arranged on one side of the air bag. The automobile body longitudinal beam structure can adjust the overall rigidity of the longitudinal beam front part according to different collision conditions, thereby realizing deformation energy absorption under different collision conditions.
Description
Technical field
The present invention relates to automotive body structure, particularly a kind of autobody stringpiece structure of built-in airbag.
Technical background
Autobody stringpiece is the crucial force transferring part of vehicle body Facad structure, and in the frontal crash of vehicles accident, automobile longitudinal beam front section crumple distortion absorbs energy, thereby reduces the automobile body deceleration amplitude; The longeron back segment requires that rigidity is preferably arranged, and avoids the crew module to produce distortion the occupant is damaged.The chassis runner leading portion that generally adopts now adopts guide groove, guiding longeron crumple distortion; Back segment adopts reinforced rib or brace panel structure that it is strengthened, and guarantees its rigidity.The longeron rigidity value of design is constant like this, yet in multi-form collision case, in full rigidity head-on crash and offset collision test, the endergonic form of longeron distortion is different, and this just need to the intensity to longeron regulate under different collision situations.
Such as Patent Office of the People's Republic of China's patent application that December 29, disclosed publication number was CN200992234Y in 2007, a kind of automobile front longitudinal beam by name, this device front side member rear portion with front apron be connected anterior by the front side member that is connected with front bumper forms, anterior and the front side member of the described front side member rear portion structure that is welded as a whole, described front side member front portion is made by the good material of energy-absorbing effect, described front side member rear portion is made by the material of good forming effect, and the thickness of described front side member front portion is less than the thickness of the material at front side member rear portion.The difference of this device by front side member front and rear material, thickness realizes that front energy-absorbing, rear portion keep the function of shape, but after design typification, can't simultaneous adaptation at multi-form collision energy-absorbing.
Summary of the invention
The object of the invention is to solve the fixing problem that can not adapt to the collision energy-absorbing of various ways of orthodox car chassis runner rigidity, a kind of Aerated automobile body longitudinal beam of regulating the rigidity of front side member in collision energy-absorbing by air bag is provided.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Aerated automobile body longitudinal beam, comprise the longeron front portion of the energy absorption performance that is connected with front bumper, the large longeron rear portion of rigidity that is connected with front apron, the longeron inner hollow, longeron is provided with airbag within the front portion, in airbag, inflation allows the airbag surrounding be close to the inwall of longeron front portion, be provided with pressure sensor in airbag, and be provided with in a side of airbag the controllable valve that pressure sensor is controlled switching.The gas of preliminary filling certain pressure intensity in airbag, when automotive front end is collided, the anterior distortion of longeron, difference according to forms of collision, detect airbag pressure by pressure sensor and change opening of control controllable valve, make the airbag venting with the anterior distortion of longeron, impact-absorbing kinetic energy is to regulate the global stiffness of the anterior distortion of longeron according to different situations.
As preferably, in airbag, air pressure is atmospheric 2～5 times.Airbag will have certain air pressure to increase the anterior certain rigidity of longeron, also will avoid hypertonia to cause airbag to break.
As preferably, the front end of the front end of airbag and longeron front portion is adjacent to.Make airbag can be better be out of shape energy-absorbing with the longeron front portion.
As preferably, on the inwall of rear end, longeron front portion, baffle plate is installed, airbag rear end and baffle plate are adjacent to.Prevent from sliding after airbag.
As preferably, described baffle plate perforate, controllable valve is arranged in the perforate of baffle plate.
As preferably, described controllable valve also connects with ECU, by the opening degree of ECU collision detection signal control controllable valve.ECU is Auto Electronic Controlled System, can obtain car load each position status signal and process, ECU detects collision alarm, and according to signal judgement collision situation, the opening degrees of controlling controllable valve different from collision situation.For example collision alarm to be detected be the positive full rigid collision of automobile to ECU, needs this moment the longeron front portion that larger rigidity is arranged, and just controls the adjustable valve opening degree less, and venting speed is little, and the airbag distortion is slow, and the anterior integral rigidity of longeron is just large; Again for example ECU collision alarm to be detected be the automobile Frontal offset impact, need this moment the anterior rigidity of longeron less, just control the adjustable valve opening degree larger, venting speed is large, the airbag distortion is fast, the anterior integral rigidity of longeron is less.When exitting due to airbag, air pressure inside is large, needs airbag to adopt the material manufacturing of high compactness, is difficult for breaking.
As preferably, described pressure sensor is connected with controllable valve by ECU.
As preferably, the wall of described longeron front portion is provided with the guiding groove that is beneficial to longitudinally the modification energy-absorbing.The anterior forward crumple distortion of guiding groove guiding longeron.
The present invention arranges in the longeron front portion can regulate the airbag of venting speed, can regulate the global stiffness of longerons front portion according to different collision situations, satisfy the distortion energy-absorbing under different collision situations; The valve of airbag is controlled by ECU, can make integrally-regulated to collision alarm, airbag air pressure signal, valve opening and closing.
Description of drawings
Fig. 1 is the lateral plan of automobile longitudinal girder of the present invention.
Fig. 2 is the cutaway view at A-A place in Fig. 1.
Fig. 3 is the partial enlarged drawing at B place in Fig. 2.
Fig. 4 is control process block diagram of the present invention.
In figure: 1. longeron is anterior, 2. longeron rear portion, 3. guiding groove, 4. airbag, 5. baffle plate, 6. adjustable valve, 7. pressure sensor, 8.ECU, 9. bleeder port.
The specific embodiment
Also the present invention is further described by reference to the accompanying drawings below by specific embodiment.
Embodiment: a kind of Aerated automobile body longitudinal beam, as Fig. 1, Fig. 2, shown in Figure 3.Autobody stringpiece comprises the longeron that is connected with front bumper anterior 1 and the longeron rear portion 2 that is connected with automotive front baffle plate.Chassis runner is hollow structure, and the wall thickness of longeron front portion 1 is little, and the guiding groove 3 of guiding front side member crumple direction when being provided with collision on sidewall, and longeron rear portion 2 wall thickness are large, and increase rigidity by structures such as brace panels, the protection occupant safety.
As shown in Figure 2 and Figure 3, the inside of longeron front portion 1 is provided with airbag 4, airbag 4 is interior is filled with 3 times of atmospheric gases in advance, the surrounding of airbag 4 is close to the inwall of longeron front portion 1, and the front end of airbag 4 is close to the front end of longeron front portion 1 and is fitted, and airbag 4 rear ends are provided with baffle plate 5, baffle plate 5 is fixed on the rear end inwall of longeron front portion 1, airbag 4 middle parts also coordinate anterior 1 central structure of longeron, form closing waist, and said structure makes airbag 4 at the anterior 1 interior position stability of longeron.Be provided with pressure sensor 7 in airbag 4, airbag 4 rear ends are provided with controllable valve 6, and controllable valve 6 passes the mesopore of baffle plate 5, control switching and the opening degree of airbag bleeder port 9.Pressure sensor 7 is connected with controllable valve and all is connected with ECU8.
Control relation when automobile is collided as shown in Figure 4, real-time collision acceleration signal and airbag pressure sensor that ECU accepts the automobile external sensor detect to get pressure change signal.ECU judgement position of collision and the longeron front portion demand to rigidity, sending instruction control controllable valve opens, if need the anterior rigidity requirement of longeron large, rigid collision as complete in the front, the real-time collision acceleration/accel is large, the controllable valve opening degree is little, and the airbag bleeder port loses heart slower, and the anterior global stiffness of longeron is higher; If need the anterior rigidity of longeron little, in Frontal offset impact, the real-time collision acceleration/accel is little, and the controllable valve opening degree is large, and the airbag bleeder port loses heart fast, and the anterior global stiffness of longeron is little.ECU continues the collision detection acceleration signal losing heart simultaneously, and controllable valve is regulated in real time.
Claims (6)
1. Aerated automobile body longitudinal beam, comprise the longeron front portion of the energy absorption performance that is connected with front bumper, the large longeron rear portion of rigidity that is connected with front apron, the longeron inner hollow, it is characterized in that: longeron is provided with airbag within the front portion, in airbag, inflation allows the airbag surrounding be close to the inwall of longeron front portion, be provided with pressure sensor in airbag, and be provided with in a side of airbag the controllable valve of being controlled switching by pressure sensor; Described controllable valve also connects with ECU, by the opening degree of ECU collision detection signal control controllable valve; Described pressure sensor is connected with controllable valve by ECU.
2. a kind of Aerated automobile body longitudinal beam according to claim 1, it is characterized in that: in airbag, air pressure is atmospheric 2～5 times.
3. a kind of Aerated automobile body longitudinal beam according to claim 1 is characterized in that: the front end of the front end of airbag and longeron front portion is adjacent to.
4. according to claim 1 and 2 or 3 described a kind of Aerated automobile body longitudinal beams is characterized in that: on the inwall of longeron anterior rear end, baffle plate is installed, airbag rear end and baffle plate are adjacent to.
5. a kind of Aerated automobile body longitudinal beam according to claim 4, it is characterized in that: described baffle plate perforate, controllable valve is arranged in the perforate of baffle plate.
6. according to claim 1 and 2 or 3 described a kind of Aerated automobile body longitudinal beams is characterized in that: the wall of described longeron front portion is provided with the guiding groove that is beneficial to longitudinally the modification energy-absorbing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110024177 CN102205855B (en) | 2011-01-21 | 2011-01-21 | Aerated automobile body longitudinal beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110024177 CN102205855B (en) | 2011-01-21 | 2011-01-21 | Aerated automobile body longitudinal beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102205855A CN102205855A (en) | 2011-10-05 |
| CN102205855B true CN102205855B (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110024177 Active CN102205855B (en) | 2011-01-21 | 2011-01-21 | Aerated automobile body longitudinal beam |
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| Country | Link |
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| CN (1) | CN102205855B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013110468B4 (en) | 2013-09-23 | 2024-04-25 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Impact element and support frame for a motor vehicle |
| CN104608721B (en) * | 2014-11-28 | 2017-04-05 | 长城汽车股份有限公司 | A kind of automotive front end rigidity adaptive system and control method |
| US9821852B2 (en) * | 2016-02-03 | 2017-11-21 | Ford Global Technologies Llc | Pressurized air insert for side impacts |
| CN105946975B (en) * | 2016-06-12 | 2018-08-17 | 北京长城华冠汽车科技股份有限公司 | A kind of longeron reinforces crumple mechanism and includes the automobile that the longeron reinforces crumple mechanism |
| US10252751B2 (en) * | 2017-03-07 | 2019-04-09 | Ford Global Technologies, Llc | Inflatable tunnel reinforcement |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002193065A (en) * | 2000-12-27 | 2002-07-10 | Toyota Motor Corp | Head part protective air bag device |
| JP4273944B2 (en) * | 2003-12-02 | 2009-06-03 | タカタ株式会社 | Head protection airbag device and vehicle |
| CN200992234Y (en) * | 2006-12-26 | 2007-12-19 | 奇瑞汽车有限公司 | Automobile front longitudinal beam |
| JP5329194B2 (en) * | 2008-12-09 | 2013-10-30 | タカタ株式会社 | Collision determination system, occupant restraint system, vehicle |
| CN201427605Y (en) * | 2009-05-27 | 2010-03-24 | 比亚迪股份有限公司 | Automobile body collision energy absorption structure |
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2011
- 2011-01-21 CN CN 201110024177 patent/CN102205855B/en active Active
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| CN102205855A (en) | 2011-10-05 |
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