CN107031733B

CN107031733B - Vehicle body front structure

Info

Publication number: CN107031733B
Application number: CN201610836460.7A
Authority: CN
Inventors: 浦野亲人; 阿部祐也; 君岛悠介
Original assignee: Honda Motor Co Ltd
Current assignee: Honda Motor Co Ltd
Priority date: 2015-10-19
Filing date: 2016-09-21
Publication date: 2019-04-16
Anticipated expiration: 2036-09-21
Also published as: JP2017077746A; JP6276237B2; CN107031733A

Abstract

The present invention provides a kind of vehicle body front structure that can absorb shock loading caused by small area biasing collides well.A kind of vehicle body front structure (10) has left front side frame (13), left side beam (16) and connecting component (18).Left side beam (16) is configured on the outside of the vehicle width direction of left front side frame (13).Left side beam (16) has the 1st bending section (46) and the 2nd bending section (47) set gradually from vehicle front, and the 1st frangible portion (64a) and the 2nd frangible portion (64b) that are formed close to the 2nd bending section (47).Connecting component (18) has the rake (81a) (reinforcing member inclined wall latter half of) for being set to connection rear wall (75a).Rake (81a) front side frame (13) and to vehicle body back sweep to the left.

Description

Vehicle body front structure

Technical field

The present invention relates to a kind of vehicle body front structures, wherein curb girder (top is configured on the outside of the vehicle width direction of front side frame Component, lower member), the front end of the curb girder is connected to the front end of front side frame.

Background technique

It has been known that there is a kind of vehicle body front structures, wherein (following configured with lower member on the outside of the vehicle width direction of front side frame Referred to as " curb girder (side member) "), the front end of curb girder is connected to the front end of front side frame by reinforcing member (gusset). Reinforcing member is formed as in a top view in general triangular.

Therefore, when small area biasing collision occurs, shock loading is input to reinforcing member from the front end of curb girder, is inputted Shock loading be transferred to front side frame on the outside of the vehicle.Hereby it is possible to send out front side frame to power unit side from the load transmitted Change shape, to absorb load (for example, referring to patent document 1 by front side frame.).

However, when vehicle weight increases or is collided with higher speed, it, can since the load applied is larger It can occur to lead to peeling off phenomenon due to shearing because of the joint portion between reinforcing member and the front end of curb girder.Therefore, because not adding Joint portion between firmware and the front end of curb girder, reinforcing member and barrier are staggered, it is difficult to make front side frame to power by reinforcing member Adequately deformation occurs for cell side, needs to ensure by every means to bias small area the suction of the energy of shock loading caused by colliding Receipts amount.

Additionally, it is known that there is a kind of vehicle body front structure, wherein the front end of curb girder is formed as curved to the front end of front side frame Curved, forniciform front end is connected to the front end of front side frame by reinforcing member.Frangible portion is formed in the front end of curb girder (for example, referring to patent document 2.).

Therefore, when small area biasing (narrow offset) collision occurs, shock loading is input to the front end of curb girder Portion, the shock loading applied make curb girder deform from frangible portion to front side frame side.Accordingly, reinforcing member becomes to front side frame Shape makes front side frame deform to power unit side by reinforcing member.By making front side frame deform, front side frame can be utilized To absorb load.

But the vehicle body front structure of patent document 2 is formed with frangible portion on curb girder.Accordingly, it is difficult to be inhaled by curb girder Shock loading caused by area biasing collides is zoomed in, this point, the leeway also improved are based on.

Existing technical literature

Patent document

Patent document 1: No. 5469697 bulletin of Japanese Patent Laid

Patent document 2: Japanese Patent Laid-Open 2015-54591 bulletin

Summary of the invention

The purpose of the present invention is to provide one kind can absorb shock loading caused by small area biasing collides well Vehicle body front structure.

1st scheme of the invention is a kind of vehicle body front structure, comprising:

Front side frame extends to vehicle body front-rear direction；

Front pillar 14 is set on the outside of the vehicle width direction of the front side frame；

Curb girder extends from the front pillar 14 to vehicle front；With

The front end of the curb girder is connected to the front end of the front side frame by connecting component,

The vehicle body front structure is characterized in that,

The curb girder configures substantially in parallel on the outside of the vehicle width direction of the front side frame and with the front side frame, comprising:

1st bending section and the 2nd bending section, the two are pulled open interval along vehicle body front-rear direction and are set gradually from vehicle front； And

Frangible portion is formed between the 1st bending section and the 2nd bending section and close to the 1st bending section,

The connecting component has rake, which is set to the rear wall of the connecting component, Xiang Suoshu front side frame and To vehicle body back sweep.

In this way, the 1st bending section and the 2nd bending section are set in curb girder, it is between the 1st bending section and the 2nd bending section and close Frangible portion is arranged in 1st bending section.Therefore, when the front end for thering is shock loading to be input to curb girder due to small area biasing occurs and collides When, frangible portion can be made to deform.Hereby it is possible to which stress is inhibited to concentrate on the engagement between the front end of curb girder and connecting component Portion inhibits joint portion peeling off phenomenon.

Moreover, so-called " small area biasing collides " (i.e. small area overlapping collides or small range is collided), before referring to vehicle What the barriers such as the front side portion and vehicle, trees or electric pole in the outside of 1/4 front side frame in portion, accounting for vehicle width direction occurred It collides.

Moreover, frangible portion is arranged between the 1st bending section and the 2nd bending section and close to the 1st bending section.That is, leaving the 1st Frangible portion is arranged in the position of bending section or the 2nd bending section.It therefore, can be in the case where not influencing frangible portion, by being input to The shock loading of the front end of curb girder makes the 1st bending section and the 2nd bending section to the properly bending of defined bending direction.

Hereby it is possible to which curb girder is made to deform in a manner of bending substantially zigzag, shock loading is absorbed by curb girder.It is logical Crossing makes curb girder deform, and the front end of curb girder is mobile to vehicle body rear.

Here, being bonded to the outer end of connecting component in the front end of curb girder.Therefore, by the front end of curb girder to vehicle body The outer end of the movement at rear, connecting component is mobile to vehicle body rear.Shifting by from the outer end of connecting component to vehicle body rear Dynamic, the rear end of connecting component is to vehicle width direction medial movement.Hereby it is possible to using the rear end of connecting component make front side frame with It is deformed to the mode of power device side bending to absorb shock loading.

In this way, being absorbed by curb girder and front side frame both parts because occurring to be input to curb girder due to small area biasing collides The shock loading of front end can increase the uptake of the energy of impact loading.

Moreover, configuring curb girder in the mode substantially parallel with front side frame.Therefore, sky can be ensured between front side frame and curb girder Between.Hereby it is possible to which configuration glass for vehicle window cleans the appurtenances such as water tank or battery in space between front side frame and curb girder.

2nd scheme of the invention is that the preferably described vehicle body front structure also has impact absorbing member, the impact absorbing Component is prominent from each front end side of the front side frame and the connecting component to vehicle front.

In this way, keeping impact absorbing member prominent from each front end side of front side frame and connecting component to vehicle front.Therefore, When the slight collision of generation, front impact or biasing collide, the applied collision of each collision can be absorbed by impact absorbing member Load.Hereby it is possible to increase the uptake to the energy for colliding load.

In addition, so-called " front impact ", refers to the frontal collisions of the striking face covering entire banner state of headstock.In addition, institute Meaning " biasing collides ", refers to the collision of a part (30~50% or so) of striking face covering vehicle frontal (front).

3rd scheme of the invention is that the preferably described curb girder is formed the closed cross-section of hollow form by its peripheral wall, The peripheral wall, the peripheral wall ridgeline be formed with the frangible portion, the frangible portion is formed as from recess portion, protrusion, opening, notch The shape of middle selection, the shock loading of the front end by being input to the curb girder, the frangible portion deform, accordingly, institute Stating frangible portion bending is plastic hinge chain.

In this way, the ridgeline in peripheral wall, peripheral wall forms frangible portion, frangible portion is formed as from recess portion, protrusion, opening, notch The shape of middle selection.That is, the combination of the number and shape of frangible portion can be selected.

Therefore, can easily adjust frangible portion to the bending intensity of the 1st bending section near frangible portion (warpage it is strong Degree).Hereby it is possible to make curb girder properly bending.

4th scheme of the invention, which is that the preferably described curb girder has, accommodates recess portion, and the receiving recess portion is in the front end of the curb girder Accommodate the outer end of the connecting component.

Recess portion is accommodated in this way, having in the front end of curb girder, in the outer end for accommodating recess portion receiving connecting component.That is, energy Enough receiving recess portions in the front end of curb girder are firmly attached the outer end of connecting component.

Therefore, shock loading is transferred to front side frame from connecting component caused by capable of colliding because of small area biasing.Accordingly, Front side frame can be made to be deformed to power unit side to absorb shock loading.

5th scheme of the invention is that the preferably described connecting component includes

Reinforcing member is formed as, and is engaged in the front end of the front side frame, has the rake, when looking down in big Triangle is caused, and section is in substantially U-shaped；With

Connecting elements is formed as, and is extended along the width of the car from the reinforcing member to the front end of the curb girder, section is in Substantially U-shaped.

In this way, connecting elements is made to extend to the front end of curb girder from reinforcing member, connecting elements is made to be formed as section in substantially U Font.Therefore, the outer end of connecting component is formed as section in substantially U-shaped, can compactly put in order arrangement.Hereby it is possible to The outer end of connecting component is contained in the receiving recess portion of the front end of curb girder.

In addition, the rear wall of connecting elements can be matched by extending to connecting elements on the outside of vehicle width direction from reinforcing member It is placed in vehicle front side.Hereby it is possible to ensure that the space between front side frame and curb girder is larger.

6th scheme of the invention is that the preferably described connecting component also has strengthening part, which is added by described Each ridgeline of firmware and the connecting elements is continuously arranged and the strengthening part covers continuous each ridgeline to reinforce respectively Ridgeline.

Herein, it may be considered that be reinforced part and connecting elements by connecting component and divide, in reinforcing member and connecting elements Joint portion forms bending section.

Therefore, in the 6th scheme, using the continuous ridgeline of strengthening part covering reinforcing member and connecting elements, thus Reinforce each ridgeline using strengthening part.It therefore, also can benefit even if forming bending section at the joint portion of reinforcing member and connecting elements Reinforce bending section with strengthening part.

Hereby it is possible to be efficiently transfer to front side via the shock loading that connecting component will enter into the front end of curb girder Frame.

7th scheme of the invention is that the preferably described curb girder has evacuation recess, the company in the corner for accommodating recess portion Relay part also has joint element, which connects the bottom of the curb girder and the connecting elements, joint element tool There is the bending section engaged around the evacuation recess.

In this way, forming evacuation recess in the corner for accommodating recess portion.The outer end of connecting component is accommodated (i.e. accommodating recess portion The outer end of connecting elements).In addition, utilizing the bottom of joint element connection curb girder and connecting elements.In turn, along evacuation recess Surrounding engages the bending section of joint element.

Therefore, even if shock loading is input to the front end of curb girder, when the angle of curb girder and connecting elements becomes larger, can also make Bending section deforms, and keeps the state engaged around evacuation recess.Hereby it is possible to further securely by connecting elements Outer end be engaged in receiving recess portion.

8th scheme of the invention is that the preferably described front side frame is by inner wall, outer wall, upper and lower part Formation cross-section in substantially The closed cross-section of rectangle,

With vehicle frame strengthening part, it is configured at the inside of the front side frame, and in the length range of the front side frame It is engaged in the inner wall, the top and the lower part.

In this way, vehicle frame strengthening part is engaged in inner wall, upper and lower part in the length range of front side frame.Therefore, energy Enough improve the intensity of front side frame well using vehicle frame strengthening part.

Accordingly, shock loading makes high-intensitive front side frame to vehicle width direction substantially horizontally bending, so as to increase pair The uptake of the energy of shock loading.

9th scheme of the invention is that the preferably described vehicle body front structure also has installing component, which will impact Absorption piece is installed on each front end of the front side frame and the connecting component,

It is bonded to the outer edge bead of the front end of the reinforcing member in the installing component,

It is configured with the rear wall of the connecting elements at the vehicle body rear at the outer edge bead and the joint portion of the installing component,

Opening is formed in the rear wall to stand facing each other with the joint portion.

In this way, being equipped with impact absorbing member by installing component in each front end of front side frame and connecting component.In addition, The outer edge bead of the front end of reinforcing member is set to be engaged in installing component.Moreover, behind the joint portion of installing component and outer edge bead Side is configured with the rear wall of connecting elements.Opening is formed in the rear wall to stand facing each other with the joint portion.

Therefore, spot welding engagement can be implemented to installing component and outer edge bead using opening.By by installing component and outside The engagement of edge flange can carry the impact that installing component is input to from impact absorbing member via outer edge bead (that is: reinforcing member) Lotus is efficiently transfer to front side frame.

Hereby it is possible to which front side frame is made properly to deform because of shock loading, impact is absorbed well using front side frame Load.

10th scheme of the invention is that the preferably described impact absorbing member includes

1st shock absorbing portion, closed cross-section has multiple zonules, and the closed cross-section prolongs to vehicle body front-rear direction It stretches；With

2nd shock absorbing portion is set on the outside of the vehicle width direction of the 1st shock absorbing portion, and closed cross-section has more A zonule, and the closed cross-section extends to vehicle body front-rear direction.

In this way, by the way that the 2nd shock absorbing portion is arranged on the outside of the vehicle width direction of the 1st shock absorbing portion, in the 1st impact absorbing Portion adds the 2nd shock absorbing portion, can increase the section of impact absorbing member.

Moreover, the 1st shock absorbing portion is made to be formed to have the closed cross-section of multiple zonules, make the 2nd shock absorbing portion shape As the closed cross-section with multiple zonules.

By the section of increasing impact absorbing member, the closed cross-section of impact absorbing member is divided into multiple zonules, The intensity of impact absorbing member can be improved well.Accordingly, high-intensitive impact absorbing member is crushed by shock loading, can Increase the uptake of the energy of impact absorbing member impact loading.

In addition, the closed cross-section of the 1st shock absorbing portion is made to be formed as extending to vehicle body front-rear direction.Similarly, make the 2nd punching The closed cross-section for hitting absorption portion is formed as extending to vehicle body front-rear direction.Hereby it is possible to utilize aluminium for example, by using extrusion forming The light metal components such as alloy manufacture the 1st shock absorbing portion and the 2nd shock absorbing portion, can simply manufacture impact absorbing member.

11st scheme of the invention is that the preferably described vehicle body front structure also has bumper, is installed on the impact The front end of absorption piece,

The bumper includes

Bumper body, end are installed on the front end of the impact absorbing member, are formed with multiple zonules Closed cross-section, and have opening in the end；With

End plate, occludes the opening of the end, and is connected to the outer wall of the impact absorbing member.

In this way, by making bumper body be formed to have the closed cross-section of multiple zonules, it can be by bumper body Closed cross-section be divided into zonule.In turn, using the opening of the end of end plate occlusion bumper body, end plate is made to be engaged in punching Hit the outer wall of absorption piece.Accordingly, the intensity of the end of bumper body is improved.The end of the bumper body is installed on punching Hit the front end of absorption piece.

Therefore, the shock loading of the end of bumper body can will be input to because small area biasing occurs and collides from guarantor It is transmitted to the front end whole region of impact absorbing member the end of dangerous thick stick main body.Accordingly, the shock loading conquassation punching transmitted The whole region of absorption piece is hit, the uptake of the energy of impact loading can be increased.

12nd scheme of the invention is that the preferably described vehicle body front structure also includes

Subframe is installed on the front side frame from below；

Steering box is installed close to the rear end of the subframe；With

Lower instrument board is set to the vehicle body rear of the steering box,

The front end of the subframe is installed on the front end of the front side frame, is carried by the impact applied from vehicle front Lotus, the subframe bending are substantially V-shaped.

In this way, the front end of subframe to be installed on to the front end of front side frame.In addition, the impact applied from vehicle front carries Lotus makes subframe bending substantially V-shaped (that is: bending is " paddy folding " state).Therefore, upward power acts on subframe Front end.

Here, the front end of front side frame is connected to the front end of curb girder by connecting component.Therefore, there is upward power effect In the front end of curb girder.In this state, in the 1st bending section, the 2nd bending section bending occurs for curb girder, passes through the 1st bending section, the 2nd Lift vehicle body front structure in bending section.

By lifting vehicle body front structure, lower instrument board is lifted.

Therefore, subframe bending is that substantially V-shaped can make tooth sector when steering box is mobile to vehicle body rear The lower section of the downward instrument board of case is mobile.Hereby it is possible to substantially ensure the deflection of front side frame and curb girder, it can increase and impact is carried The uptake of the energy of lotus.

According to the present invention, shock loading caused by colliding because of small area biasing is absorbed as curb girder and front side frame, it can be fine Shock loading caused by ground is absorbed because of small area biasing collision.

Detailed description of the invention

Fig. 1 is the perspective view for showing vehicle body front structure of the invention.

Fig. 2 is the direction view from " 2 " direction of Fig. 1.

Fig. 3 is the side view for showing the vehicle body front structure of Fig. 1.

Fig. 4 is the direction view from " 4 " direction of Fig. 1.

Fig. 5 is the exploded perspective view for showing the vehicle body front structure of Fig. 4.

Fig. 6 is the perspective view for showing the vehicle frame strengthening part that the left front side frame of Fig. 5 has.

Fig. 7 is the enlarged drawing in " 7 " portion of Fig. 1.

Fig. 8 is the sectional view of the 8-8 line along Fig. 7.

Fig. 9 is the direction view from " 9 " direction of Fig. 7.

Figure 10 is the cross-sectional view of the 10-10 line along Fig. 3.

Figure 11 is the direction view from " 11 " direction of Fig. 7.

Figure 12 is the perspective view for showing the state of left impact absorbing member of truncation Fig. 7.

Figure 13 is to carry to vehicle body front structure of the invention to the impact applied due to small area biasing occurs and collides The figure that the example that lotus is absorbed is illustrated.

Figure 14 is the perspective view for showing the variation of frangible portion of the invention.

Specific embodiment

In the following, being illustrated referring to attached drawing to the preferred embodiment of the present invention.Moreover, " preceding (Fr) ", " rear (Rr) ", " Left (L) ", " right (R) " are subject to the direction of driver's observation.

[embodiment]

The vehicle body front structure 10 of embodiment is illustrated.

As shown in Figure 1, vehicle body front structure 10 is the position for constituting the front portion structure of vehicle Ve.Vehicle body front structure 10 has Have: the left front side frame 13 and forward right side frame 13 extended to vehicle body front-rear direction；It is set on the outside of the vehicle width direction of each front side frame 13 Left front column 14 and right front pillar 14；The lower instrument board 15 being set between each front pillar 14；And from each front pillar 14 to vehicle front The left side beam 16 and right side beam 16 of extension.

As shown in Figure 1 and Figure 2, vehicle body front structure 10 includes left connecting component 18, by the front end 16a of left side beam 16 It is connected to the front end 13a of left front side frame 13；The front end 16a of right side beam 16 is connected to forward right side by right connecting component 18 The front end 13a's of frame 13；Left installing component 19 is installed on the front end 13a and left connecting component 18 of left front side frame 13；With Right installing component 19 is installed on the front end 13a and right connecting component 18 of forward right side frame 13.

In addition, vehicle body front structure 10 includes impact absorbing member 21, it is installed on each installing component 19；And bumper (bumper beam) 22 is erected at the front end 21a of left impact absorbing member 21 and the front end of right impact absorbing member 21 21a。

Engine room 24 is formed by left front side frame 13, forward right side frame 13 and bumper 22.In engine room 24 configured with dynamic Power unit 25.Power unit 25 is, for example, that engine and speed changer realize integrated unit.

As shown in figure 3, vehicle body front structure 10 includes the secondary vehicle for being installed on left front side frame 13 and forward right side frame 13 from below Frame 27；With the steering box 28 installed close to the rear end of subframe 27.

Moreover, vehicle body front structure 10 is the substantially symmetric structure in left and right.Therefore, to the left side of vehicle body front structure 10 Part and right side members assign identical label, and are described in detail only for left-hand side part, omit the explanation to right side members.

As shown in Figure 4, Figure 5, left front side frame 13 extends to vehicle body front-rear direction, has vehicle frame inner wall (inner wall) 31, vehicle frame Outer wall (outer wall) 32, vehicle frame top (top) 33 and frame downward (lower part) 34.

By vehicle frame inner wall 31, frame outer wall 32, vehicle frame top 33 and frame downward 34, left front side frame 13 is formed as section Closed cross-section in the form of a substantially rectangular.That is, left front side frame 13 is high-intensitive component.

There is vehicle frame strengthening part 36 in the inside 35 of left front side frame 13.

As shown in fig. 6, vehicle frame strengthening part 36 is configured at the inside 35 of left front side frame 13.In this state, vehicle frame is reinforced Component 36 is engaged in vehicle frame inner wall 31 (referring to Fig. 5), vehicle frame top 33 and frame downward 34.

That is, vehicle frame strengthening part 36 passes through each section along vehicle frame inner wall 31, vehicle frame top 33 and frame downward 34 Position is formed as section in substantially U-shaped.

Vehicle frame strengthening part 36 left front side frame 13 from front end 13a in the length range of rear end 13b to vehicle body Front-rear direction extends.Therefore, the intensity of left front side frame 13 can be improved using vehicle frame strengthening part 36 well.

Accordingly, shock loading F1 is bent high-intensitive left front side frame 13 substantially horizontally to vehicle width direction, so as to Increase the uptake because of the energy of shock loading F1 caused by front impact.

Fig. 1 is returned to, left front column 14 is provided on the outside of the vehicle width direction of left front side frame 13.In addition, in forward right side frame 13 Right front pillar 14 is provided on the outside of vehicle width direction.

Between left front column 14 and right front pillar 14, it is provided with lower instrument board 15.Lower instrument board 15 is engaged in left front side frame 13 Rear end 13b and forward right side frame 13 rear end 13b.

As shown in Figure 2 and Figure 3, left side beam 16 in vehicle front and is extended downward from left front column 14.Left side beam 16 is overlooked It is configured substantially in parallel in figure on the outside of the vehicle width direction of left front side frame 13 and relative to left front side frame 13.

Therefore, it can ensure space 38 between left front side frame 13 and left side beam 16.Hereby it is possible in left front 13 He of side frame Space 38 between left side beam 16 configures glass for vehicle window and cleans the appurtenances such as water tank and battery.

Left side beam 16 includes the upper component 43 extended from left front column 14 via left damper shell 41 to vehicle front； With the front end 43a from upper component 43 to the lower member 44 of the oblique extension of vehicle front.

Upper component 43 is that its peripheral wall is formed the closed cross-section of hollow form (specifically, section is in the form of a substantially rectangular Closed cross-section), component with higher-strength.The upper component 43 includes approximate horizontal to vehicle front from left front column 14 The latter half of 43b extended；With in vehicle front and extend downward since latter half of 43b as forniciform first half 43c.

In the portion of reporting to the leadship after accomplishing a task of latter half of 43b and first half 43c, the 1st bending section 46 is formed as convex in a manner of bulging upwards Shape bending.1st bending section 46 be can under the action of being input to the shock loading F2 of front end 16a of left side beam 16, and with The position that the mode of bending deforms upwards.

Lower member 44 in vehicle front and is extended downward since the front end 43a of upper component 43 as bending.

As shown in Figure 7, Figure 8, lower member 44 includes lower bending section 44a, opens from the front end 43a of upper component 43 Begin, in vehicle front and extends downward as bending；With front end (that is: the front end of left side beam 16) 16a, from lower bending The horizontal bending of front end 44b of portion 44a.

It is same as upper component 43, lower member 44 be formed by peripheral wall 51 hollow form closed cross-section it is (specific For, the closed cross-section of section in the form of a substantially rectangular), high-intensitive component.Peripheral wall 51 passes through component inner wall 52, component outer wall 53, member upper 54 and member lower 55 are formed the closed cross-section of section in the form of a substantially rectangular.

By making peripheral wall 51 be formed as the closed cross-section of section in the form of a substantially rectangular, and upper ridgeline in being formed on peripheral wall 51 56, interior lower edgeline portion 57, outside upper ridgeline (ridgeline) 58 and outer lower edgeline portion 59.In addition, upper flange 61 is from interior upper ridgeline 56 protrude upwards.Moreover, lower flange 62 is prominent from outer lower edgeline portion 59 to vehicle width direction outside.

In addition, lower member 44 has the 2nd bending section 47, frangible portion 64, accommodates recess portion 65 (referring to Fig. 9) and evacuation recess 66 (referring to Fig. 9).

2nd bending section 47 is formed in the boundary of lower bending section 44a and front end 16a.With the 2nd bending section 47 (referring to Fig. 3) Equally, the 2nd bending section 47 be can be under the action of being input to the shock loading F2 of front end 16a of left side beam 16, and with to vehicle The position that the mode of square bending deforms behind.

That is, left side beam 16 has the 2nd bending section for keeping compartment of terrain along vehicle body front-rear direction, setting gradually from vehicle front 47 and the 1st bending section 46.

Frangible portion 64 is arranged between the 1st bending section 46 and the 2nd bending section 47 and close to the 2nd bending section 47.It is specific and Speech, frangible portion 64 are formed in close to the 2nd bending section 47 from peripheral wall 51, outside upper ridgeline 58, upper flange 61 and lower flange 62 etc. The position of middle selection.Moreover, frangible portion 64 is formed as the shape selected from recess portion, protrusion, opening and notch.

It is thereby possible to select the combination of the number and shape of frangible portion 64.Hereby it is possible to easily adjust 64 phase of frangible portion For the buckling strength (intensity of bending) of the 2nd bending section 47 near frangible portion 64.

That is, the buckling strength of frangible portion 64 can be adjusted, so that left side beam 16 is curved in the 2nd bending section 47 and the 1st well Bending occurs for pars convoluta 46.

In embodiment, recess portion 64a is formed in outside upper ridgeline 58 as the 1st frangible portion.Hereinafter, recess portion 64a is claimed For " the 1st frangible portion 64a ".In addition, notch 64b is formed in lower flange 62 as the 2nd frangible portion.Hereinafter, notch 64b is known as " the 2nd frangible portion 64b ".

Accordingly, the extended line (being shown with imaginary line) for connecting the 1st frangible portion 64a and the 2nd frangible portion 64b, which becomes, has plasticity The position of hinge function.Hereinafter, by " hinge position 68 " is known as with the position of plastic hinge function.

That is, as shown in Fig. 2, the shock loading F2 for being input to the front end 16a of left side beam 16 makes the 1st frangible portion 64a or the 2nd Frangible portion 64b deforms.Accordingly, hinge position 68 as shown in phantom, is with the 1st frangible portion 64a or the 2nd frangible portion 64b Starting point is bent into plastic hinge chain.

Hereby it is possible to which stress is inhibited to concentrate between the front end 16a of left side beam 16 and the outer end 18a of connecting component 18 Joint portion, the outer end 18a for being able to suppress front end 16a and connecting component 18 are removed.

Recess portion 65 is accommodated as shown in figure 9, having in the front end 16a of left side beam 16.Recess portion 65 is accommodated in left side beam 16 The component inner wall 52 of front end 16a forms opening portion 71.The outer end 18a of connecting component 18 is embedded in from opening portion 71 and accommodates recess portion 65, the outer end 18a of connecting component 18 is accommodated in receiving recess portion 65.

In this state, the outer end 18a of connecting component 18 is engaged in the front end 16a of left side beam 16 by welding etc.. That is, the receiving recess portion 65 in the front end 16a of left side beam 16 is firmly attached the outer end 18a of connecting component 18.

Therefore, as shown in Fig. 2, being input to the impact of the front end 16a of left side beam 16 because small area biasing occurs and collides Load F2 keeps the front end 16a of left side beam 16 mobile to vehicle body rear as shown by arrow A.Left side beam 16 in the 2nd bending section 47 and Bending occurs for the 1st bending section 46, absorbs shock loading F2.

Moreover, so-called " small area biasing collides " (that is: small area overlapping collides or small range is collided), before referring to vehicle The barriers such as the front side portion and vehicle, trees or electric pole in the outside of in portion, accounting for vehicle width direction 1/4 front side frame 13 occur Collision.

Here, the receiving recess portion 65 in left side beam 16 is firmly attached the outer end 18a of connecting component 18.Therefore, by Mobile to vehicle body rear as shown by arrow A from the front end 16a of left side beam 16, the outer end 18a of connecting component 18 is to after vehicle body Fang Yidong.

Movement by from the outer end 18a of connecting component 18 to vehicle body rear, the rear end 18b such as arrow of connecting component 18 To vehicle width direction medial movement shown in B.

Hereby it is possible to using the rear end 18b of connecting component 18, make left front side frame 13 with to 25 side bending of power unit Mode deforms, to absorb shock loading F2.

In this way, as the front end 16a for thering is shock loading F2 to be input to left side beam 16 due to small area biasing occurs and collides, Shock loading F2 can be absorbed using left side beam 16 and 13 both parts of left front side frame.Impact is carried hereby it is possible to increase The uptake of the energy of lotus F2.

Fig. 9 is returned to, forms corner 71a in the downside for accommodating the opening portion 71 of recess portion 65, the corner 71a formation in downside is kept away Allow recess portion 66.That is, evacuation recess 66 is formed in the member lower 55 of the front end 16a of left side beam 16.Pass through the corner in downside 71a forms evacuation recess 66, to inhibit stress to concentrate on corner 71a.

Along the evacuation recess 66, the joint element of connecting component 18 is bonded to (specifically, engagement bending section 77a is (curved Pars convoluta)) 77.

That is, as shown in fig. 7, left side beam 16 has the 1st bending section 46 (referring to Fig. 3), the 2nd bending section 47, the 1st frangible portion 64a, the 2nd frangible portion 64b, recess portion 65 and evacuation recess 66 are accommodated (referring to Fig. 9).

Here, being provided with the 1st frangible portion 64a or the 2nd frangible portion 64b close to the 2nd bending section 47.Therefore, when small because occurring Area biasing collide and there is shock loading F2 to be input to left side beam 16 front end 16a when, hinge position 68 is with the 1st frangible portion 64a or the 2nd frangible portion 64b is that starting point is deformed into plastic hinge chain.

Hereby it is possible to which stress is inhibited to concentrate between the front end 16a of left side beam 16 and the outer end 18a of connecting component 18 It is peeling-off to be able to suppress joint portion for joint portion.

In addition, as shown in figure 3, being formed with the 1st bending section 46 and the 2nd bending section 47 in left side beam 16.Therefore, when there is impact When load F2 is input to the front end 16a of left side beam 16 from vehicle front, the 2nd bending section 47 is as shown by arrow C to vehicle body rear Bending, the bending upwards as shown by arrow A of the 1st bending section 46.

Accordingly, left side beam 16 is deformed into substantially Z-shaped (being shown with imaginary line).

Moreover, by the way that the 1st frangible portion 64a or the 2nd frangible portion 64b (referring to Fig. 7), energy is arranged close to the 2nd bending section 47 The 1st frangible portion 64a and the 2nd frangible portion 64b is enough set to leave the 2nd bending section 47 or the 1st bending section 46.

Therefore, the shock loading F2 for being input to the front end 16a of left side beam 16 can be such that the 1st bending section 46 and the 2nd is bent Portion 47 is well to defined bending direction bending, without having an impact to the 1st frangible portion 64a or the 2nd frangible portion 64b.According to This, can make conscientiously left side beam 16 deform in a manner of being bent into substantially zigzag, and punching can be absorbed using left side beam 16 Hit load F2.

As shown in Fig. 5, Figure 10, before the front end 16a of left side beam 16 is connected to left front side frame 13 by connecting component 18 End 13a.Connecting component 18 includes reinforcing member 74, is engaged in the front end 13a of left front side frame 13；Connecting elements 75, from Reinforcing member 74 is extended along the width of the car to the front end 16a of left side beam 16；Strengthening part 76 is set to reinforcing member 74 and connection Component 75；With joint element 77, left side beam 16 and connecting elements 75 are connected.

Reinforcing member 74 is engaged in frame outer wall 32 at the front end 13a of left front side frame 13, from vehicle width direction outside.That is, Reinforcing member 74 is that be shaped to section by sheet metal bending u-shaped and formed, and is formed as in a top view in general triangular, And there is reinforcing member inclined wall 81.In addition, being formed with ridgeline (crest line on reinforcing member along the upper limb of reinforcing member inclined wall 81 Portion) 82.Moreover, being formed with reinforcing member lower edgeline portion 83 along the lower edge of reinforcing member inclined wall 81.

In addition, the front end 74a in reinforcing member 74 has outer edge bead 84.

The inner end flange of reinforcing member 74 is engaged in frame outer wall 32, and the outer edge bead 84 of the front end 74a of reinforcing member 74 engages In left installing component 19.Inner end flange by making reinforcing member 74 is engaged in frame outer wall 32, and by reinforcing member 74 and vehicle frame outside Wall 32 is formed as closed cross-section in the form of a substantially rectangular.Thus it is ensured that the intensity of reinforcing member 74.

Left installing component 19 is installed on the front end 13a of left front side frame 13 and the front end 16a of left side beam 16.

In the state that reinforcing member 74 is engaged in frame outer wall 32 and left installing component 19, reinforcing member inclined wall 81 is from Zuo An Component 19 is filled to tilt to frame outer wall 32 towards vehicle width direction inside.Connecting elements 75 prolongs from reinforcing member 74 along left installing component 19 Extend to the front end 16a of left side beam 16.

Connecting elements 75 is to be shaped to section by sheet metal bending to be formed in substantially U-shaped, and have and connect upper crest line Portion's (ridgeline) 86 and connection lower edgeline portion 87.Ridgeline 86 is continuous with ridgeline 82 on reinforcing member in connection, connects lower edgeline Portion 87 and reinforcing member lower edgeline portion 83 are continuous.

The inner end of connecting elements 75 is engaged in the front of reinforcing member, and the front end of connecting elements 75 is engaged in left installing component 19.Front end by making connecting elements 75 is engaged in left installing component 19,19 shape of Lai Liyong connecting elements 75 and left installing component At closed cross-section in the form of a substantially rectangular.Thus it is ensured that the intensity of connecting elements 75.

As shown in figure 11, it by the connection rear wall 75a of the latter half of 81a of reinforcing member inclined wall 81 and connecting elements 75, is formed The rear wall 79 of connecting component 18.Therefore, the rear wall 79 of connecting component 18 has the latter half of 81a shape using reinforcing member inclined wall 81 At rake 81a.

In addition, outer edge bead 84 is engaged in left installing component 19.At outer edge bead 84 and the joint portion of left installing component 19 89 vehicle body rear, the connection rear wall 75a configured with connecting elements 75.In addition, standing facing each other in wall 75a with joint portion 89 upon connection Position, formed opening 91.

Therefore, left installing component 19 and outer edge bead 84 can be engaged by spot welding using opening 91.

By engaging left installing component 19 and outer edge bead 84, left peace can will be input to from left impact absorbing member 21 The shock loading F2 of dress component 19 is efficiently transfer to left front side frame 13 via outer edge bead 84 (that is, reinforcing member 74).

Accordingly, shock loading F2 makes left front side frame 13 successfully deform, and can be inhaled well using left front side frame 13 Receive shock loading F2.

As shown in Fig. 5, Figure 11, connecting component 18 is reinforced part 74 and connecting elements 75 separates, accordingly, reinforcing member 74 and company Connection member 75 is connected as bending state.Therefore, the bending section of reinforcing member 74 and connecting elements 75 is strengthened by strengthening part 76. That is, the reinforcement top 76a of strengthening part 76 is engaged in each top of reinforcing member 74 and connecting elements 7.In addition, strengthening part 76 Reinforce rear wall 76b and is engaged in reinforcing member inclined wall 81 and connection rear wall 75a.

In this state, portion continuously is reinforced for ridgeline 82 on the reinforcing member of substantially V-shaped and the upper ridgeline 86 of connection Part 76 covers.Therefore, even if reinforcing member 74 and the engagement of connecting elements 75 are bending state, also can reinforce adding using strengthening part 76 The bending joint portion of firmware 74 and connecting elements 75.

Hereby it is possible to will enter into the shock loading F2 of the front end 16a of left side beam 16 via connecting component 18 efficiently It is transferred to left front side frame 13.

As shown in figure 9, the front end 16a of left side beam 16 and the outer end 18a of connecting component 18 are connected by joint element 77 It connects.Specifically, each outer end (that is, outer end 18a of connecting component 18) of connecting elements 75 and strengthening part 76 is accommodating (referring concurrently to Figure 10) is engaged in the state of the receiving recess portion 65 of left side beam 16.

The connection lower part (bottom) 78 of connecting elements 75 is configured to, the member lower 55 with the front end 16a of left side beam 16 In substantially conplane state.

In this state, joint element 77 is engaged in the member lower (bottom) 55 of the front end 16a of left side beam 16 and connects The connection lower part 78 of connection member 75.Joint element 77 has engagement bending section 77a, the engagement bending section 77a along receiving recess portion It is engaged around 65 evacuation recess 66.

Here, evacuation recess 66 is formed in the member lower 55 of the front end 16a of left side beam 16.Therefore, left side beam 16 The member lower 55 of front end 16a and the connection lower part 78 of connecting elements are connected by joint element 77.

In this way, member lower 55 and connection lower part 78 are connected by joint element 77, it is recessed along the evacuation for accommodating recess portion 65 Lower bending section 44a is bonded to around portion 66.Therefore, left even if when shock loading F2 is input to the front end 16a of left side beam 16 When angle, θ between curb girder 16 and connecting component 18 becomes larger, engagement bending section 77a can also be made to remain along with the variation of angle, θ The state engaged around evacuation recess 66.Hereby it is possible to which the outer end 18a of connecting component 18 is more firmly engaged in receiving Recess portion 65.

In addition, as shown in Figure 10, connecting elements 75 extends to the front end 16a of left side beam 16 from reinforcing member 74, structure is connected Part 75 is formed as section in substantially U-shaped.Therefore, the outer end 18a of connecting component 18 is formed as section in substantially U-shaped, energy It is enough compactly to put in order arrangement.Hereby it is possible to which the outer end 18a of connecting component 18 is contained in the front end 16a's of left side beam 16 Accommodate recess portion 65.

In addition, by making connecting elements 75 from reinforcing member 74 to vehicle width direction, outside extends, can be by connecting elements 75 Connection rear wall 75a is configured at vehicle front side.Hereby it is possible to ensure that the space 38 between left front side frame and left side beam 16 is larger (same When referring to Fig. 2).

As shown in figure 12, left impact absorbing member 21 is installed in left installing component 19.That is, left impact absorbing member 21 from The front end 13a of left front side frame 13 and the front end side 18c of connecting component 18 are prominent (referring concurrently to Fig. 2) to vehicle front.

Therefore, when slight collision, front impact or biasing collision occurs, each punching can be absorbed by impact absorbing member 21 Hit applied collision load F2.Hereby it is possible to increase the uptake to the energy for colliding load F2.

In addition, so-called " front impact ", refers to the frontal collisions of the striking face covering entire banner state of headstock.In addition, institute Meaning " biasing collides " refers to the collision of a part (30~50% or so) of striking face covering vehicle front.

Left impact absorbing member 21 includes the pedestal 94 that left installing component 19 is installed on from vehicle front side；It is installed on base The 1st shock absorbing portion 95 on the inside of the vehicle width direction of seat 94；And the 2nd impact being installed on the outside of the vehicle width direction of pedestal 94 is inhaled Receipts portion 96.

Pedestal 94 is installed on left installing component 19.1st shock absorbing portion 95 out of pedestal 94 vehicle width direction side to vehicle body Front is prominent.Therefore, the 1st shock absorbing portion 95 is connected to the front end of left front side frame 13 by pedestal 94 and left installing component 19 13a。

1st shock absorbing portion 95 is the light metal components that material is aluminium alloy etc., and extrusion forming is along vehicle body front and back To the component that there is the mode of impartial cross sectional shape to extend.Specifically, the 1st shock absorbing portion 95 includes the 1st periphery wall 98, be formed as the closed cross-section of section in the form of a substantially rectangular；With the 1st partition wall 99, the inside of the 1st periphery wall 98 is divided into Multiple zonules 101.1st partition wall 99 is formed as section in substantially cross (that is: latticed).

In other words, by the 1st periphery wall 98 and the 1st partition wall 99, the closed cross-section of the 1st shock absorbing portion 95 is in grid Shape it is divided into multiple zonules 101, that is, be formed as the closed cross-section of so-called sphere of movements for the elephants shape.

The 2nd shock absorbing portion 96 is provided with engagement state on the outside of the vehicle width direction of the 1st shock absorbing portion 95.By Add the 2nd shock absorbing portion 96 in 1st shock absorbing portion 95, it is ensured that the section of left impact absorbing member 21 is larger.

Same as the 1st shock absorbing portion 95, the 2nd shock absorbing portion 96 is the light metal components that material is aluminium alloy etc., is squeezed The molded component to be extended in a manner of there is impartial cross sectional shape along vehicle body front-rear direction.Specifically, the 2nd impact is inhaled Receipts portion 96 includes the 2nd periphery wall 103, is formed as section in substantially U-shaped (Japanese katakana "U" font) and the 2nd point The inside of 2nd periphery wall 103 is divided into zonule 106 by next door 104.2nd partition wall 104 is formed as section in generally " i " Font.

The inner end 103a of 2nd periphery wall 103 is engaged in the outer end 98a of the 1st periphery wall 98.Under the engagement state, The inside of 2nd periphery wall 103 is divided into inside and outside zonule 106 by the 2nd partition wall 104, is formed as the envelope of so-called " day " font Closing cross section.

In this way, adding the 2nd shock absorbing portion 96 in the 1st shock absorbing portion 95 to ensure left impact absorbing member 21 in vehicle width Section on direction is larger.In addition, the 1st shock absorbing portion 95 is on the closed cross-section with multiple zonules 101, formed with There is the closed cross-section of multiple zonules 106 to compare the more zonules 101 of number for 2nd shock absorbing portion 96.Hereby it is possible to sharp Shock loading when front impact is born with main car frame, that is, left front side frame 13, to increase the uptake of impact energy.

Moreover, improving the intensity of left impact absorbing member 21 well.Accordingly, the high-intensitive left side of shock loading F2 conquassation Impact absorbing member 21 can increase the uptake of the energy of left 21 impact loading F2 of impact absorbing member.

In addition, extending the closed cross-section of the 1st shock absorbing portion 95 to vehicle body front-rear direction.Similarly, the 2nd impact is inhaled The closed cross-section in receipts portion 96 extends to vehicle body front-rear direction.Hereby it is possible to utilize aluminium alloy etc. for example, by using extrinsion pressing Light metal components manufacture the 1st shock absorbing portion 95 and the 2nd shock absorbing portion 96, can simply manufacture left impact absorbing member 21。

As shown in fig. 7, in the front end 21a of the left impact absorbing member 21 and front end 21a of right impact absorbing member 21 (referring to Fig.1) it is provided with bumper 22.The left part of bumper 22 is installed on the front end 21a of left impact absorbing member 21.

Specifically, bumper 22 includes bumper body 111, left part (end) 111a is installed on left impact and inhales Receive the front end 21a of component 21；With end plate 112, the left part 111a of bumper body 111 is connected to the 2nd impact absorbing The outer wall 97 in portion 96.

Bumper body 111 includes the bumper periphery wall 114 for being formed as the closed cross-section of section in the form of a substantially rectangular；With The inside of bumper periphery wall 114 is divided into multiple bumper partition walls 115 of multiple zonules.Multiple bumper partition walls 115 keep the substantially parallel configuration in compartment of terrain in the up-down direction.

The inside of bumper periphery wall 114 is divided into multiple cells by multiple bumper partition walls 115 in the up-down direction Domain 117 is formed as the closed cross-section of so-called " mesh " font.Therefore, the intensity of bumper body 111 can be improved well.

In addition, the front surface of the left part 111a of bumper body 111 is formed as skewed, bumper periphery wall is eliminated 114 antetheca 114a.Therefore, there is opening in the front surface or left end edge of the left part 111a of bumper body 111.In bumper The front surface or left end edge of the left part 111a of main body 111 is provided with end plate 112.

End plate 112 has hang plate 121, bending part 122.By hang plate 121 and bending part 122, end plate 112 is formed as It is in substantially V-shaped when vertical view.

Hang plate 121 is set to the front surface or left end edge of the left part 111a of bumper body 111.Accordingly, bumper The opening of the front surface of the left part 111a of main body 111 or the opening of left end edge are inclined by the occlusion of plate 121.

Moreover, bending part 122 is engaged in the outer wall 97 of the 2nd shock absorbing portion 96.That is, improving bumper body 111 The intensity of left part 111a.Before the left part 111a of high-intensitive bumper body 111 is installed on left impact absorbing member 21 End 21a.

It therefore, being capable of rushing the left part 111a for being input to bumper body 111 because small area biasing occurs and collides Load F2 is hit, is efficiently transfer to the front end 21a's of left impact absorbing member 21 from the left part 111a of bumper body 111 Whole region.

Accordingly, the shock loading F2 transmitted is successfully crushed the whole region of left impact absorbing member 21, can increase The uptake of the energy of impact loading F2.

Fig. 3 is returned to, subframe 27 is installed on left front side frame 13 and forward right side frame 13 from below.Specifically, subframe 27 Front end 27a be installed on the front end 13a of left front side frame 13 and the front end 13a of forward right side frame 13.

In addition, the rear end 27b of subframe 27 is installed on the rear end 13b of left front side frame 13 and the rear end of forward right side frame 13 Portion 13b.

Rear end 27b close to subframe 27 is equipped with steering box 28.In addition, after the vehicle body of steering box 28 Side is provided with lower instrument board 15.

In this state, when being applied with shock loading from vehicle front, before shock loading F2 is transferred to subframe 27 End 27a.The shock loading F2 transmitted makes 27 bending of subframe in " paddy folding " shape of substantially V-shaped (being shown with imaginary line) State.Therefore, upward power acts on the front end 27a of subframe 27.

Here, the front end 16a that the front end 13a of left front side frame 13 is connected to left side beam 16 by connecting component 18 is (same When referring to Fig. 2).Therefore, upward power acts on the front end 16a of left side beam 16.

In this state, left side beam 16 is substantially zigzag (with imagination by the 2nd bending section 47,46 bending of the 1st bending section Line is shown).Therefore, the elongated portion 16c between the 2nd bending section 47 and the 1st bending section 46 of left side beam 16 is occurred in a manner of holding up Deformation.Accordingly, by elongated portion 16c, make to lift power F3 and act on vehicle body front structure 10 (especially left front column 14).

Lower instrument board 15 is provided between left front column 14 and right front pillar 14.Therefore, act on left front column 14 lifts power F3 is transferred to lower instrument board 15.Accordingly, when 27 bending of subframe is substantially V-shaped, steering box 28 is mobile to vehicle body rear When, the lower section of the downward instrument board 15 of steering box 28 can be made mobile.

By moving steering box 28 downwards, the deformation of left front side frame 13 or left side beam 16 can be substantially ensured Amount, can increase the uptake of the energy of impact loading F2.

Then, referring to Fig.1 3, in vehicle body front structure 10 of the invention, by left side beam 16 and left front side frame 13 this two A component absorbs the shock loading F4 for the front end 16a for being input to left side beam 16 due to small area biasing occurs and collides Example be illustrated.

As shown in Figure 13 (a), is collided because small area biasing occurs, there is shock loading F4 to be input to the front end of left side beam 16 16a.It is input to the shock loading F4 of the front end 16a of left side beam 16, makes the 2nd bending section 47 and the 1st bending section of left side beam 16 46 bend.

By making the 2nd bending section 47 and the 1st bending section 46 that bending occur, the front end 16a of left side beam 16 is as shown by arrow A It is mobile to vehicle body rear.By the movement of the front end 16a of left side beam 16, the outer end 18a of connecting component 18 is as shown by arrow A It is mobile to vehicle body rear.

Therefore, the rear end 18b of connecting component 18 is as shown by arrow F to vehicle width direction medial movement.Accordingly, by interconnecting piece The rear end 18b of part 18 makes left front side frame 13 deform in a manner of to 25 side bending of power unit.

As shown in Figure 13 (b), bending, left side beam are occurred by the 2nd bending section 47 and the 1st bending section 46 that make left side beam 16 16 deform in such a way that bending is substantially zigzag (state shown in imaginary line).

By making left side beam 16 be deformed into substantially zigzag, shock loading F4 can be absorbed using left side beam 16.

In addition, left front side frame 13 is made to deform in a manner of to the horizontal bending in 25 side of power unit.By making front left side Frame 13 deforms, and can absorb shock loading F4.

In such manner, it is possible to absorb and collided because small area biasing occurs using 13 both parts of left side beam 16 and left front side frame And it is input to the shock loading F4 of the front end 16a of left side beam 16.It is hit hereby it is possible to increase to caused by small area biasing collision The uptake of the energy of load F4.

(variation)

Referring to Fig.1 4, the variation of the frangible portion 64 illustrated in embodiment is illustrated.

As shown in figure 14, the frangible portion 130 of variation is in addition to the frangible portion 64 of embodiment, also to form the 3rd frangible portion 132, the 4th frangible portion 133 and the 5th frangible portion 134.

3rd frangible portion 132 is to be formed in the opening of the component outer wall 53 of peripheral wall 51.4th frangible portion 133 is to be formed in peripheral wall The opening of 51 member upper 54.5th frangible portion 134 is the notch for being formed in upper flange 61.

It is same as the frangible portion 64 of embodiment according to frangible portion 130, it is starting point with frangible portion 130, hinge position 68 is such as false Think that bending shown in line is plastic hinge chain.

In addition, vehicle body front structure of the invention is not limited to the above embodiments, change appropriate, improvement can be carried out Deng.

For example, vehicle body front structure shown in the embodiment, the front side frame of left and right, the front pillar of left and right, lower instrument board, a left side Right curb girder, connecting component, the installing component of left and right, the impact absorbing member of left and right, bumper, subframe, steering box, Vehicle frame strengthening part, lower bending section, frangible portion, accommodates recess portion, evacuation recess, reinforcing member, connecting elements at the upper component of left and right And the shape or structure of the 1st, the 2nd shock absorbing portion etc., it is not limited to the shape enumerated or structure, change appropriate can be carried out.

[industrial availability]

Present invention is preferably applicable to have in the outside of front side frame configured with curb girder and curb girder is connected to the vehicle body of front side frame The automobile of front portion structure.

Description of symbols

10 vehicle body front structures

13 or so front side frame (front side frame)

The front end of the left front side frame of 13a

14 or so front pillar (front pillar 14)

15 lower instrument boards

16 or so curb girder (curb girder)

The front end of 16a left side beam

18 connecting components

The outer end of 18a connecting component

The front end of 18c connecting component

19 or so installing component (installing component)

21 or so impact absorbing member (impact absorbing member)

The front end of the left impact absorbing member of 21a

22 bumpers

27 subframes

The front end of 27a subframe

The rear end of 27b subframe

28 steering boxs

31 vehicle frame inner walls (inner wall)

32 frame outer walls (outer wall)

33 vehicle frame tops (top)

36 vehicle frame strengthening parts

43 or so upper component (upper component)

Bending section under 44a

46 the 1st bending sections

47 the 2nd bending sections

The peripheral wall of 51 left side beams

55 member lowers (bottom)

The outside upper ridgeline (ridgeline) of 58 peripheral walls

64,130 frangible portion

The 1st frangible portion of 64a

The 2nd frangible portion of 64b

65 accommodate recess portion

66 evacuation recess

The corner of 71a receiving recess portion

74 reinforcing members

The front end of 74a reinforcing member

75 connecting elements

75a connection rear wall (rear wall of connecting component)

76 strengthening parts

77 joint elements

78 connections lower part (bottom)

81 reinforcing member inclined walls

Latter half of (rake) of 81a reinforcing member inclined wall

Ridgeline (ridgeline of reinforcing member) on 82 reinforcing members

84 outer edge beads

86 connect upper ridgeline (ridgeline of connecting elements)

89 joint portions

The opening of 91 connection rear walls

95 the 1st shock absorbing portions

96 the 2nd shock absorbing portions

The outer wall (outer wall of impact absorbing member) of 97 the 2nd shock absorbing portions

101, a zonule more than 106,117

111 bumper bodies

The left part (end of bumper body) of 111a bumper body

112 end plates

132 the 3rd frangible portions

133 the 4th frangible portions

F1, F2, F4 shock loading.

Claims

1. a kind of vehicle body front structure, comprising:

Front side frame extends to vehicle body front-rear direction；

Front pillar (14) is arranged on the outside of the vehicle width direction of the front side frame；

Curb girder extends from the front pillar (14) to vehicle front；With

The vehicle body front structure is characterized in that,

The curb girder is on the outside of the vehicle width direction of the front side frame and is configured as substantially parallel with the front side frame, and includes

1st bending section and the 2nd bending section, the two are pulled open interval along vehicle body front-rear direction and are set gradually from vehicle front；With

Frangible portion is formed between the 1st bending section and the 2nd bending section and by the 2nd bending section,

The connecting component has rake, which is arranged at the rear wall of the connecting component, Xiang Suoshu front side frame and to Vehicle body back sweep,

The curb girder, which has, accommodates recess portion, which accommodates the outer end of the connecting component in the front end of the curb girder,

The connecting component has reinforcing member and connecting elements, wherein

The reinforcing member is formed: being engaged in the front end of the front side frame and has the rake, when overlook view In general triangular, and section is in substantially U-shaped；

The connecting elements is formed: being extended along the width of the car from the reinforcing member to the front end of the curb girder, and section In substantially U-shaped,

The curb girder has evacuation recess in the corner for accommodating recess portion,

The connecting component also has joint element, which connects the bottom of the curb girder and the connecting elements,

The joint element has the bending section engaged around the evacuation recess.

2. a kind of vehicle body front structure, comprising:

Front side frame extends to vehicle body front-rear direction；

Curb girder extends from the front pillar (14) to vehicle front；With

The vehicle body front structure is characterized in that,

The vehicle body front structure also has installing component, the installing component by impact absorbing member be installed on the front side frame and Each front end of the connecting component,

The outer edge bead of the front end of the reinforcing member is engaged in the installing component,

The rear wall of the connecting elements is configured in the vehicle body rear at the joint portion of the outer edge bead and the installing component,

3. a kind of vehicle body front structure, comprising:

Front side frame extends to vehicle body front-rear direction；

Curb girder extends from the front pillar (14) to vehicle front；With

The vehicle body front structure is characterized in that,

The curb girder, which has, accommodates recess portion, which accommodates the outer of the connecting component End, the curb girder and connecting component engagement.

4. a kind of vehicle body front structure, comprising:

Front side frame extends to vehicle body front-rear direction；

Curb girder extends from the front pillar (14) to vehicle front；With

The vehicle body front structure is characterized in that,

The connecting component also has strengthening part, is continuously set by each ridgeline of the reinforcing member and the connecting elements It sets and the strengthening part covers continuous each ridgeline to reinforce each ridgeline, the strengthening part and the reinforcing member and described Connecting elements engagement.

5. vehicle body front structure according to any one of claims 1 to 4, which is characterized in that

The vehicle body front structure also has impact absorbing member, and the impact absorbing member is from the front side frame and the interconnecting piece Each front end side of part is prominent to vehicle front.

6. vehicle body front structure according to any one of claims 1 to 4, which is characterized in that

The curb girder is formed the closed cross-section of hollow form by its peripheral wall,

The frangible portion is formed on the ridgeline of the peripheral wall, the peripheral wall,

The frangible portion is formed the shape selected from recess portion, protrusion, opening, notch,

It deforms and the shock loading of front end of the frangible portion by being input to the curb girder, accordingly the frangible portion quilt Bending is plastic hinge chain.

7. vehicle body front structure according to any one of claims 1 to 4, which is characterized in that

The front side frame is formed the closed cross-section of section in the form of a substantially rectangular by inner wall, outer wall, upper and lower part,

The front side frame has vehicle frame strengthening part, which is configured in the inside of the front side frame, and in institute It states and is engaged in the inner wall, the top and the lower part in the length range of front side frame.

8. vehicle body front structure according to claim 5, which is characterized in that

The impact absorbing member includes

1st shock absorbing portion, closed cross-section has multiple zonules, and the closed cross-section extends to vehicle body front-rear direction；With

2nd shock absorbing portion is arranged on the outside of the vehicle width direction of the 1st shock absorbing portion, and closed cross-section has more A zonule, and the closed cross-section extends to vehicle body front-rear direction.

9. vehicle body front structure according to claim 8, which is characterized in that

The vehicle body front structure also has bumper, which is installed on the front end of the impact absorbing member,

The bumper includes

Bumper body, end is installed in the front end of the impact absorbing member, and is formed with multiple zonules Closed cross-section, and the end is open；With

10. vehicle body front structure according to any one of claims 1 to 4, which is characterized in that

The vehicle body front structure also includes

Subframe is installed in the front side frame from below；

Steering box is installed by the rear end of the subframe；With

Lower instrument board is arranged at the vehicle body rear of the steering box,

The front end of the subframe is installed in the front end of the front side frame, and the subframe from vehicle front by inputting Shock loading and be bent over as substantially V-shaped.