CN207191172U - A kind of automobile longitudinal girder - Google Patents

A kind of automobile longitudinal girder Download PDF

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Publication number
CN207191172U
CN207191172U CN201721210802.0U CN201721210802U CN207191172U CN 207191172 U CN207191172 U CN 207191172U CN 201721210802 U CN201721210802 U CN 201721210802U CN 207191172 U CN207191172 U CN 207191172U
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China
Prior art keywords
root
longeron
front panel
longeron body
supporting section
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Application number
CN201721210802.0U
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Chinese (zh)
Inventor
乔磊磊
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Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
Original Assignee
Zhejiang Geely Holding Group Co Ltd
Geely Automobile Research Institute Ningbo Co Ltd
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Priority to CN201721210802.0U priority Critical patent/CN207191172U/en
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Publication of CN207191172U publication Critical patent/CN207191172U/en
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Abstract

The utility model provides a kind of automobile longitudinal girder, belongs to automobile technical field.It solves the problems, such as that existing longeron can not be realized that stable bending deforms by longeron root during frontal impact.This automobile longitudinal girder, including longeron body and front panel supporting section, there is the weakening structure that can induce longeron body bending on the inner surface of the longeron body root, reinforcing plate is fixed with the outer surface of the front panel supporting section, one end of the reinforcing plate extends to the root of longeron body and the end face at the end and the root broken line that bending is formed at weakening structure of longeron body are mutually close.When being hit stable bending deformation can occur in root for longeron body of the present utility model; reduce the energy of positive bump stroke; avoid positive bump stroke from being transferred directly to the foot well area of crew module, reduce the intrusion volume of front panel foot well area, be advantageous to the protection to occupant.

Description

A kind of automobile longitudinal girder
Technical field
The utility model belongs to automobile technical field, particularly a kind of automobile longitudinal girder.
Background technology
When head-on crash occurs for vehicle, substantial amounts of energy can be produced, forward engine room longeron is as the most important change of front part of vehicle Shape energy-absorbing and force transferring structure, the impact load of crew module is transferred to for absorbing collision energy, decomposition and reduction.
At present, Chinese patent net discloses the reinforcement attachment structure (Authorization Notice No. at a kind of automobile wheelhouse: CN205952084U), it includes longitudinally disposed longeron and the front panel bearing diagonal set obliquely, the reinforcement attachment structure Including reinforcing plate, one end of the reinforcing plate and the upper surface of the longeron are connected, the other end of the reinforcing plate with it is described before The side of coaming plate bearing diagonal is connected.Longeron and front panel bearing diagonal are connected above by reinforcing plate, it is effective to improve The possibility of longeron root lateral bending in collision process, but when being hit in the case of car speed is faster, this is vertical Beam can not realize that bending deforms in root so that positive bump stroke is transferred directly in front panel, causes crew module podalic zone The bump stroke passed over from longeron is directly born, causes the intrusion volume of front panel foot well area big, is unfavorable for occupant Protection.
The content of the invention
The purpose of this utility model is above mentioned problem be present for existing technology, it is proposed that a kind of automobile longitudinal girder is strengthened Plate, the technical problem that the utility model solves are:How to ensure that the root of longeron can be realized when longeron is by frontal impact Stable bending deformation.
The purpose of this utility model can be realized by following technical proposal:A kind of automobile longitudinal girder, including longeron body and Front panel supporting section, it is characterised in that having on the inner surface of the longeron body root can induce the weak of longeron body bending Change structure, be fixed with reinforcing plate on the outer surface of the front panel supporting section, one end of the reinforcing plate extends to longeron body Root and the end face at the end and the root of longeron body at weakening structure bending formed broken line it is mutually close.
Inherently there is turning, the turning is when longeron is hit between the root of longeron body and front panel supporting section Effect with guiding longeron body bending, by the way that weakening structure to be arranged on to the root of longeron body, further weakens longeron The intensity of body root, and reinforcing plate is arranged on the outer surface of front panel supporting section to increase the intensity of front panel supporting section, And one end of reinforcing plate extends to the root of longeron body and the end face at the end is rolled over the root of longeron body at weakening structure Bending into broken line it is mutually close, when longeron body is collided by forward direction so that do not roll over first the root of longeron body It is curved, ensure longeron bending orderly bending from front to back, after impact load is transferred to the root of longeron body, stress concentration is vertical In the weakening structure of beam body root so that stable bending deformation, and then positive shock can occur in root for longeron body Load transmission direction changes, and reduces the energy of positive bump stroke, and longeron body absorbs greatly during bending The collision energy of amount, and increase the intensity of front panel supporting section by setting reinforcing plate so that front panel supporting section can Larger impact load is resisted, reduces the intrusion volume of front panel supporting section, is advantageous to the protection to occupant.
In a kind of above-mentioned automobile longitudinal girder, the reinforcing plate includes the mainboard being fixed on bending part outer surface, described Front and rear side on mainboard outer surface is equipped with subplate, is connected between the subplate of front and rear side by crossbeam.By being set on mainboard Subplate and crossbeam make it that the overall construction intensity of reinforcing plate is higher, preferable to the structure-reinforced effect of front panel supporting section, can Resist larger impact load.
In a kind of above-mentioned automobile longitudinal girder, the inner surface side of the outer end dash panel supporting section of the front panel supporting section To the connecting portion that can connect automobile A column is bent to form, the angle between the connecting portion and front panel supporting section is obtuse angle. In practical set, front panel supporting section is connected by the lower pillar stand of connecting portion and automobile A column, during longeron collides, A part of impact is transferred to automobile A column by connecting portion, when the impact force that crew module's foot well area is transferred in decomposition, reduces The intrusion volume of front panel supporting section foot well area.
In a kind of above-mentioned automobile longitudinal girder, the angle between the longeron body and front panel supporting section is obtuse angle.Will Angle between longeron body and front panel supporting section is arranged to the bending that obtuse angle is advantageous to longeron body root, can be longeron The bending deformation of body provides enough spaces, improves collision energy-absorbing effect.
In a kind of above-mentioned automobile longitudinal girder, the weakening structure includes being symmetricly set on the inner surface of longeron body root Two grooves of upper opposite sides.By being respectively provided with groove, longeron sheet on the relative both sides of the inner surface in longeron body root The root of body is strength weak position, and when facilitating the longeron to be hit, longeron body can occur stable bending in root and become Shape.
In a kind of above-mentioned automobile longitudinal girder, the weakening structure includes being symmetricly set on the inner surface of longeron body root Two through holes of upper opposite sides.By being respectively provided with through hole, longeron sheet on the relative both sides of the inner surface in longeron body root The root of body is strength weak position, and when facilitating the longeron to be hit, longeron body can occur stable bending in root and become Shape.
Compared with prior art, automobile longitudinal girder of the present utility model has advantages below:When longeron body is sent out by forward direction During raw collision so that bending does not occur first for the root of longeron body, ensures longeron bending orderly bending from front to back, treats that collision carries After lotus is transferred to the root of longeron body, stress concentration is in the weakening structure of longeron body root so that longeron body is in root Stable bending deformation can occur for portion, and then positive bump stroke direction of transfer changes, and reduces positive bump stroke Energy, and longeron body absorbs substantial amounts of collision energy during bending, and before being increased by setting reinforcing plate The intensity of enclosure support section so that front panel supporting section can resist larger impact load, reduce invading for front panel supporting section Enter amount, be advantageous to the protection to occupant.
Brief description of the drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is upward view of the present utility model.
Fig. 3 is dimensional structure diagram of the present utility model.
In figure, 1, longeron body;2nd, front panel supporting section;21st, connecting portion;3rd, weakening structure;31st, groove;4th, reinforcing plate; 41st, mainboard;42nd, subplate;43rd, crossbeam.
Embodiment
It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.
Embodiment 1
As shown in Figure 1 and Figure 2, including longeron body 1 and front panel supporting section 2, longeron body 1 and front panel supporting section 2 it Between angle be obtuse angle, there is the weakening structure 3 that can induce the bending of longeron body 1, front wall on the inner surface of the root of longeron body 1 Reinforcing plate 4 is fixed with the outer surface of plate supporting section 2, one end of reinforcing plate 4 extends to the root of longeron body 1 and the end at the end Face and the root broken line that bending is formed at weakening structure 3 of longeron body 1 are mutually close, and the outer end of front panel supporting section 2 is forward The inner surface direction of enclosure support section 2 is bent to form the connecting portion 21 that can connect automobile A column, the connecting portion 21 and front panel Angle between supporting section 2 is obtuse angle.The intersection of longeron body 1 and front panel supporting section 2 is connected in front panel, longeron hair During raw positive shock, bending does not occur first for the root of longeron body 1, should after impact load is transferred to the root of longeron body 1 Power is concentrated in the weakening structure 3 of the root of longeron body 1, and stable bending deformation occurs in its root position for longeron body 1, makes The bang path for obtaining positive impact changes, larger by setting the front panel supporting section 2 of reinforcing plate 4 to resist Impact load, in addition, because front panel supporting section 2 is connected by connecting portion 21 with automobile A column so that a part of impact It is transferred to by connecting portion 21 on automobile A column, therefore above-mentioned longeron can absorb substantial amounts of collision energy when being hit, and make Obtain energy transmission caused by positive shock to the foot well area of crew module to greatly reduce, reduce front panel supporting section foot well area Intrusion volume, be advantageous to the protection to occupant.
More specifically, as shown in figure 3, reinforcing plate 4 includes the master being fixed on the outer surface of front panel supporting section 2 Plate 41, the front and rear side on the outer surface of mainboard 41 are equipped with subplate 42, connected between the subplate 42 of front and rear side by crossbeam 43.
As shown in Fig. 2 weakening structure 3 includes being symmetricly set on two of opposite sides on the inner surface of the root of longeron body 1 Individual groove 31.
Embodiment 2
The present embodiment 2 and the content of embodiment 1 are essentially identical, and difference content is:Weakening structure 3 includes being symmetricly set on Two of opposite sides on the inner surface of the root of longeron body 1.The present embodiment replaces the structure of groove 31 by through hole, equally The reduction effect that the further groove 31 of embodiment 1 plays in the root of longeron body 1 can be reached.
Specific embodiment described herein is only to the utility model spirit explanation for example.The utility model institute Category those skilled in the art can make various modifications or supplement to described specific embodiment or using similar Mode substitute, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Although longeron body 1, front panel supporting section 2, connecting portion 21, weakening structure 3, groove have more been used herein 31st, the term such as reinforcing plate 4, mainboard 41, subplate 42, crossbeam 43, but it is not precluded from the possibility using other terms.Use these Term is used for the purpose of more easily describing and explaining essence of the present utility model;It is construed as any additional limit System is all disagreed with the utility model spirit.

Claims (6)

1. a kind of automobile longitudinal girder, including longeron body (1) and front panel supporting section (2), it is characterised in that the longeron body (1) there is the weakening structure (3) that can induce longeron body (1) bending on the inner surface of root, the front panel supporting section (2) Reinforcing plate (4) is fixed with outer surface, one end of the reinforcing plate (4) extends to the root of longeron body (1) and the end at the end Face and the root of longeron body (1) are mutually close in the broken line that the bending of weakening structure (3) place is formed.
2. a kind of automobile longitudinal girder according to claim 1, it is characterised in that the reinforcing plate (4) includes being fixed on front wall Mainboard (41) on the outer surface of plate supporting section (2), the front and rear side on mainboard (41) outer surface is equipped with subplate (42), preceding Connected between the subplate (42) of rear side by crossbeam (43).
A kind of 3. automobile longitudinal girder according to claim 1, it is characterised in that the outer end of the front panel supporting section (2) to The inner surface direction of front panel supporting section (2) is bent to form the connecting portion (21) that can connect automobile A column, the connecting portion (21) Angle between front panel supporting section (2) is obtuse angle.
4. a kind of automobile longitudinal girder according to claim 1, it is characterised in that the longeron body (1) supports with front panel Angle between section (2) is obtuse angle.
5. according to a kind of automobile longitudinal girder described in claim any one of 1-4, it is characterised in that the weakening structure (3) includes It is symmetricly set on two grooves (31) of opposite sides on the inner surface of longeron body (1) root.
6. according to a kind of automobile longitudinal girder described in claim any one of 1-4, it is characterised in that the weakening structure (3) includes It is symmetricly set on two through holes of opposite sides on the inner surface of longeron body (1) root.
CN201721210802.0U 2017-09-20 2017-09-20 A kind of automobile longitudinal girder Active CN207191172U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721210802.0U CN207191172U (en) 2017-09-20 2017-09-20 A kind of automobile longitudinal girder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721210802.0U CN207191172U (en) 2017-09-20 2017-09-20 A kind of automobile longitudinal girder

Publications (1)

Publication Number Publication Date
CN207191172U true CN207191172U (en) 2018-04-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201721210802.0U Active CN207191172U (en) 2017-09-20 2017-09-20 A kind of automobile longitudinal girder

Country Status (1)

Country Link
CN (1) CN207191172U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109131577A (en) * 2018-09-21 2019-01-04 吉利汽车研究院(宁波)有限公司 Front rail structure and subframe assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109131577A (en) * 2018-09-21 2019-01-04 吉利汽车研究院(宁波)有限公司 Front rail structure and subframe assembly

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