CN105313986A - Car instrument panel crossbeam - Google Patents
Car instrument panel crossbeam Download PDFInfo
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- CN105313986A CN105313986A CN201410377972.2A CN201410377972A CN105313986A CN 105313986 A CN105313986 A CN 105313986A CN 201410377972 A CN201410377972 A CN 201410377972A CN 105313986 A CN105313986 A CN 105313986A
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- zone
- crumple zones
- holding area
- breakdown zone
- body front
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Abstract
The invention relates to a car instrument panel crossbeam. The car instrument panel crossbeam is connected with a front-wall zone of a car body. A structure connected to the front-wall zone of the car body comprises a crumple zone, a breaking zone and a maintaining zone; the crumple zone is connected with the car-body front-wall zone and is suitable for receiving an impact force transferred by virtue of the car-body front-wall zone; the breaking zone is respectively connected with the crumple zone and the maintaining zone and suitable for being broken when the crumple zone receives the impact force transferred via the car-body front-wall zone; the end surface of the end, connected with the breaking zone, of the maintaining zone is larger than that of the end, connected with the breaking zone, of the crumple zone; the maintaining zone is suitable for containing the crumple zone when the breaking zone is broken. By virtue of the car instrument panel crossbeam, the safety performance of a car can be improved.
Description
Technical field
The present invention relates to field of automobile, particularly relate to a kind of fascia board girder.
Background technology
Fascia board girder is the inner skeleton of instrument panel syste, in the car in passenger accommodation between left and right A post.It can provide installation site and support for other system and parts etc. in passenger cabin.Meanwhile, as the connection bracket between instrument panel syste and body assembly, it can also play the intensity increasing whole vehicle body, the effect of available protecting occupant when vehicle occurs to clash into.Thus its strength and stiffness is the primary index of its performance.
In dashboard cross member, for supporting the anatomical connectivity of car steering tube column to body assembly.Specifically, be the front region being connected to vehicle body, as the front windshield lower beam under front windshield.When vehicle generation head-on crash, the longitudinal force that collision can produce by above-mentioned structure from machinery space by front windshield lower beam towards dashboard cross member transmission, thus have and cause steering column and produce the risk of displacement.Like this, the bearing circle that steering column connects will eject backward.On the one hand directly may strike driver and crew, damage, if on the other hand now safe automobile air bag be ejected, also can impact the ejected position of safety air bag, and then have influence on the position of human impact's safety air bag, also easily damage.For the consideration of protection driver and crew, this situation needs to avoid.
Summary of the invention
The problem that the embodiment of the present invention solves is when collision happens, how to strengthen the safety performance of automobile, protection driver and crew.
For solving the problem, the embodiment of the present invention provides a kind of fascia board girder, with body front wall joint area, it is characterized in that, comprises: crumple zones with the connection structure in body front wall region, breakdown zone and holding area; Described crumple zones and described body front wall joint area, be suitable for receiving the impulsive force transmitted via described body front wall region; Described breakdown zone is connected with described crumple zones and described holding area respectively, is suitable for, when described crumple zones receives the impulsive force transmitted via described body front wall region, rupturing; The end face of described holding area and described breakdown zone coupling end is greater than the end face of described crumple zones and described breakdown zone coupling end; Described holding area is suitable for when described breakdown zone fracture, accommodating described crumple zones.
Optionally, described holding area is greater than the length of described crumple zones towards direction, described breakdown zone towards the length in direction, described breakdown zone.
Optionally, described connection structure also comprises reinforced rib, is arranged on the coupling end in described crumple zones and described body front wall region.
Optionally, described breakdown zone comprises the first boss and the second boss that overlap, and the cross-sectional area of described first boss is less than the cross-sectional area of described second boss, and described first boss connects described crumple zones, and described second boss connects described holding area.
Optionally, described second boss is distributed with weakening structure.
Optionally, described weakening structure is through hole.
Optionally, described weakening structure is for weakening groove.
Optionally, described crumple zones, described breakdown zone and described holding area are one-body molded.
Compared with prior art, the technical scheme of the embodiment of the present invention has the following advantages:
By arranging crumple zones, breakdown zone and holding area in the connection structure of fascia board girder and body front wall region, make when vehicle generation head-on crash, first stressed by crumple zones, and enter holding area by the breakdown zone that fracture occurs, thus serve and slow down the impulsive force of body front wall region to holding area, and postpone the effect of collision time, therefore, it is possible to reduce the displacement of steering column, and safety air bag is ejected in time, thus strengthens the safety performance of automobile.
Further, by the coupling end in crumple zones and body front wall region is arranged reinforced rib, strengthen the intensity of its coupling end, the crumple zones degree cracked when being subject to impacting and possibility can be reduced, thus make it can enter holding area according to the crumple path of presetting, strengthen vehicle safety performance further.
Further, by arranging weakening structure on the second boss of breakdown zone, making crumple zones when being subject to clashing into, holding area can be entered along the direction towards holding area, enhancing its guidance quality.
Further, by by shaping to the crumple zones of bindiny mechanism, breakdown zone and holding area integrated die-casting, avoid the issuable assembly error of independent anatomical connectivity, and reduce manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of fascia board girder in the embodiment of the present invention;
Fig. 2 is the cutaway view of fascia board girder shown in Fig. 1 and body front wall joint area structure;
Fig. 3 is fascia board girder shown in Fig. 1 and the cutaway view of body front wall joint area structure after collision happens;
Fig. 4 is a kind of structural representation that the embodiment of the present invention interrupts split plot;
Fig. 5 is the another kind of structural representation that the embodiment of the present invention interrupts split plot;
Fig. 6 is from crumple zones towards a kind of schematic diagram of weakening structure breakdown zone, direction, breakdown zone in the embodiment of the present invention;
Fig. 7 is from crumple zones towards the another kind of schematic diagram of weakening structure breakdown zone, direction, breakdown zone in the embodiment of the present invention;
Fig. 8 is from crumple zones towards another schematic diagram of weakening structure breakdown zone, direction, breakdown zone in the embodiment of the present invention;
Fig. 9 is from crumple zones towards another schematic diagram of weakening structure breakdown zone, direction, breakdown zone in the embodiment of the present invention.
Detailed description of the invention
In existing dashboard cross member, for supporting the anatomical connectivity of car steering tube column to body assembly, specifically, be the front region being connected to vehicle body, as the front windshield lower beam under front windshield.When vehicle generation head-on crash, the longitudinal force that collision can directly produce by above-mentioned structure from machinery space by front windshield lower beam towards dashboard cross member transmission, thus have and cause the risk that steering column produces displacement.
Because needs support steering column load, therefore the active mass of dashboard cross member mainly concentrates on driver side region.Like this, when the bearing circle that steering column connects ejects backward, directly may strike driver and crew on the one hand, cause comparatively major injury, if now safe automobile air bag is ejected on the other hand, also can impact the ejected position of safety air bag, and then have influence on the position of human impact's safety air bag, also easily damage.For the consideration of protection driver and crew, this situation needs to avoid.
In an embodiment of the present invention, by arranging crumple zones, breakdown zone and holding area in the connection structure of fascia board girder and body front wall region, make when vehicle generation head-on crash, first stressed by crumple zones, and enter holding area by the breakdown zone that fracture occurs, thus serve and slow down the impulsive force of body front wall region to holding area, and postpone the effect of collision time, therefore, it is possible to reduce the displacement of steering column, and safety air bag is ejected in time, ensure that the safety of driver and crew.
For enabling above-mentioned purpose, the feature and advantage of the embodiment of the present invention more become apparent, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
Embodiments provide a kind of fascia board girder, with reference to Fig. 1, described fascia board girder 1, is connected with body front wall region 2, and its coupling end 6 is also connected with the centre gangway 7 of vehicle body.Fascia board girder 1 comprises with the connection structure in body front wall region 2: crumple zones 3, breakdown zone 4 and holding area 5.Wherein:
Described crumple zones 3 is connected with described body front wall region 2, is suitable for receiving the impulsive force transmitted via described body front wall region 2.Described breakdown zone 4 is connected with described crumple zones 3 and described holding area 5 respectively, when being suitable for receiving the impulsive force transmitted via described body front wall region 2 in described crumple zones 3, ruptures.Described holding area 5 and the end face of described breakdown zone 4 coupling end are greater than the end face of described crumple zones 3 and described breakdown zone 4 coupling end; Described holding area 5 is suitable for when rupturing in described breakdown zone 4, accommodating described crumple zones 3.
The connection structure of fascia board girder is connected with body front wall region 2.According to different vehicles, dashboard cross member can be different from the connection location in body front wall region 2.Such as, can be that the zone line of fascia board girder 1 is connected with air regulator cross sill, or can be that the zone line of fascia board girder 1 is connected with motorcar body front panel.
In the above-described embodiment, when vehicle is impacted by head-on crash, owing to being directly connected with body front wall region 2, first the crumple zones 3 of described connection structure can receive the impulsive force transmitted via described body front wall region 2, and under the effect of impulsive force, rupture in the breakdown zone 4 be connected with described crumple zones 3.The inside of described holding area 5 is hollow structure, and the end face of itself and described breakdown zone 4 coupling end is greater than the end face of described crumple zones 3 and described breakdown zone 4 coupling end.As shown in Figures 2 and 3, namely the maximum height H1 of described crumple zones 3 connecting end surface needs the minimum constructive height H2 being less than described holding area 5 connecting end surface.Therefore, when fracture occurs in described breakdown zone 4, described crumple zones 3 can enter the accommodated inside space of described holding area 5 under the effect of impulsive force, ensures that described crumple zones 3 and described holding area 5 can keep together.
After described crumple zones 3 enters described holding area 5 completely, now the front region 2 of vehicle body just can strike in described holding area 5, namely produces fascia board girder 1 and impacts.As can be seen here, by the connection structure of the fascia board girder 1 of the present embodiment, can when colliding generation, the stop by breakdown zone 4 reduces the impulsive force transmitted in body front wall region 2.Simultaneously due to only after described crumple zones 3 enters described holding area 5, body front wall region 2 just can strike on described fascia board girder 1, so delayed the collision time that body front wall region 2 strikes fascia board girder 1, when ensureing that onboard system controls safety air bag ejection, safety air bag can eject in time and put in place.
In the above-described embodiment, as the optional embodiment of one, with reference to Fig. 2, described holding area 5 is greater than the length L1 of described crumple zones 3 towards direction, described breakdown zone 4 towards the length L2 in direction, described breakdown zone 4.Now, only after described crumple zones 3 enters described holding area 5 completely, described body front wall region 2 just can strike described fascia board girder 1.Therefore the buffering effect of described connection structure can be controlled by the length L1 arranging crumple zones 3.Specifically, the length L1 of described crumple zones 3 can according in the experiment of car load head-on crash, and the minimizing of required absorption defines the requirement of the Impact energy of occupant injury, to obtain best buffering effect.
In the above-described embodiment, the shape of described crumple zones 3 and described breakdown zone 4 connecting end surface, specifically defines according to the type of attachment in itself and body front wall region 2 and peripheral component deployment scenarios.Described connecting end surface can be the shapes such as quadrangle, circle or irregular abnormity.Described holding area 5 needs corresponding consistent with it with the shape of described breakdown zone 4 coupling end end face, or the size of described connecting end surface is enough to ensure that described crumple zones 3 can enter.
In the above-described embodiment, as the optional embodiment of one, the agent structure of the various piece and fascia board girder 1 that form above-mentioned connection structure can be that integrated die-casting is shaping.By each part mentioned above is one-body molded, decrease crumple zones 3, breakdown zone 4 and holding area 5 by the independent structure issuable assembly error of assembly and connection again, the crumple zones 3 crumple Path error that causes thus can be avoided and affect the buffering effect of described bindiny mechanism to impulsive force, improve the validity and the accuracy that control crumple path and absorb collision energy, and improve stock utilization, can manufacturing cost be reduced simultaneously.
Further, the crumple zones 3 of described bindiny mechanism, breakdown zone 4 and holding area 5 sections can be one-body molded by material die casting such as magnesium, magnesium alloy, aluminium or aluminum alloys.
In the above-described embodiment, still can remain intact after being impacted to make described crumple zones, thus can according to the crumple path movement preset, therefore as a kind of optional embodiment, described connection structure can also comprise reinforced rib, is arranged on the coupling end in described crumple zones and described body front wall region.Also can strengthen the intensity of described crumple zones by other means, such as, increase the thickness of its wall thickness.
In the above-described embodiment, as shown in Figure 4, described breakdown zone 4 can comprise the first boss 41 and the second boss 42 overlapped, the cross-sectional area of described first boss 41 is less than the cross-sectional area of described second boss 42, and described first boss 41 connects described crumple zones 3, described second boss 42 connects described holding area 5, thus forms the form of step surface as shown in Figure 7.Cross-sectional area due to described first boss 41 is less than the cross-sectional area of described second boss 42, therefore can ensure that described crumple zones 3 is when colliding generation, enters in described holding area 5.
In instantiation, the second above-mentioned boss 42 can be the platform of rectangular configuration.And in order to make described crumple zones 3 enter in described holding area 5 according to the crumple direction of design, to strengthen the guidance quality to described crumple zones 3, as shown in Figure 5, described second boss 42 also can be set to the trapezoid body with degree of dip.
In instantiation, also for ease of and make described crumple zones 3 enter in described holding area 5 according to the crumple direction of design, to strengthen the guidance quality to described crumple zones 3, can also be set to be distributed with weakening structure on described second boss 42.Described weakening structure is arranged on the step surface 421 of described breakdown zone 4.When described crumple zones 3 is subject to after described body front wall region 2 impacted, described breakdown zone 4 being made to ftracture along described reduction feature by the effect of shearing force, thus enhancing the guidance quality in crumple direction, described crumple zones 3.Described reduction feature can be arranged on the concentrated region of described step surface 421 upper stress.
As the optional embodiment of one, described reduction feature can be through hole.Shown in composition graphs 6-Fig. 8, described weakening structure can be circular hole 422, oval hole 423 or square hole 424, also can be other profile holes.
As the optional embodiment of one, described reduction feature also can be weaken groove, as U groove, C type groove etc.
As the optional embodiment of one, as shown in Figure 9, described reduction feature can also be that through hole and the mixed system 425 weakening groove are arranged.
The fracture mode being arranged on reduction form on described breakdown zone 4 step surface 421 and described breakdown zone 4 can look the material behavior of fascia board girder 1 connection structure, head-on crash requires for minimizing occupant injury, complete vehicle structure is durable and the composite factor such as car load vibration and sound vibration roughness (NoiseVibrationHarshness, NVH) considers design.
Be understandable that, the above-mentioned example of the present invention all can mutually combine under the prerequisite of inventive concept, and it all belongs within protection scope of the present invention.Such as, the shape of described breakdown zone and holding area connecting end surface can be set to circle, thus make described breakdown zone form the cylinder of two mutual stack combinations.Weakening structure is set on the step surface of described breakdown zone simultaneously.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (8)
1. a fascia board girder, with body front wall joint area, is characterized in that, comprises: crumple zones with the connection structure in body front wall region, breakdown zone and holding area;
Described crumple zones and described body front wall joint area, be suitable for receiving the impulsive force transmitted via described body front wall region;
Described breakdown zone is connected with described crumple zones and described holding area respectively, is suitable for, when described crumple zones receives the impulsive force transmitted via described body front wall region, rupturing;
The end face of described holding area and described breakdown zone coupling end is greater than the end face of described crumple zones and described breakdown zone coupling end; Described holding area is suitable for when described breakdown zone fracture, accommodating described crumple zones.
2. fascia board girder as claimed in claim 1, it is characterized in that, described holding area is greater than the length of described crumple zones towards direction, described breakdown zone towards the length in direction, described breakdown zone.
3. fascia board girder as claimed in claim 1, it is characterized in that, described connection structure also comprises reinforced rib, is arranged on the coupling end in described crumple zones and described body front wall region.
4. fascia board girder as claimed in claim 1, it is characterized in that, described breakdown zone comprises the first boss and the second boss that overlap, the cross-sectional area of described first boss is less than the cross-sectional area of described second boss, and described first boss connects described crumple zones, described second boss connects described holding area.
5. fascia board girder as claimed in claim 4, is characterized in that, described second boss is distributed with weakening structure.
6. fascia board girder as claimed in claim 5, it is characterized in that, described weakening structure is through hole.
7. fascia board girder as claimed in claim 5, is characterized in that, described weakening structure is for weakening groove.
8. fascia board girder as claimed in claim 1, it is characterized in that, described crumple zones, described breakdown zone and described holding area are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377972.2A CN105313986B (en) | 2014-08-01 | 2014-08-01 | Fascia board girder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410377972.2A CN105313986B (en) | 2014-08-01 | 2014-08-01 | Fascia board girder |
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| Publication Number | Publication Date |
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| CN105313986A true CN105313986A (en) | 2016-02-10 |
| CN105313986B CN105313986B (en) | 2018-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410377972.2A Active CN105313986B (en) | 2014-08-01 | 2014-08-01 | Fascia board girder |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691324A (en) * | 2016-03-24 | 2016-06-22 | 延锋彼欧汽车外饰系统有限公司 | Flexible plastic buckle seat |
| CN106080799A (en) * | 2016-07-26 | 2016-11-09 | 浙江吉利控股集团有限公司 | A kind of dashboard cross member attachment structure and vehicle |
| CN112765788A (en) * | 2020-12-31 | 2021-05-07 | 成都航天模塑股份有限公司 | Plastic part collision fracture simulation analysis method and automobile instrument panel assembly structure optimization method |
| CN113635977A (en) * | 2021-08-30 | 2021-11-12 | 恒大新能源汽车投资控股集团有限公司 | Connecting mechanism and instrument board beam assembly |
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| SE325918B (en) * | 1968-10-22 | 1970-07-13 | Scharfenbergkupplung Gmbh | |
| EP0763448B1 (en) * | 1995-09-11 | 2000-06-07 | Hoogovens Staal B.V. | An energy absorbing unit |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105691324A (en) * | 2016-03-24 | 2016-06-22 | 延锋彼欧汽车外饰系统有限公司 | Flexible plastic buckle seat |
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| CN112765788B (en) * | 2020-12-31 | 2023-02-21 | 成都航天模塑股份有限公司 | Plastic part collision fracture simulation analysis method and automobile instrument panel assembly structure optimization method |
| CN113635977A (en) * | 2021-08-30 | 2021-11-12 | 恒大新能源汽车投资控股集团有限公司 | Connecting mechanism and instrument board beam assembly |
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| Publication number | Publication date |
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| CN105313986B (en) | 2018-06-15 |
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