JP6572588B2 - Vehicle front wheel suspension structure - Google Patents

Description

  The present invention relates to a vehicle front wheel suspension structure.

There is provided a vehicle front wheel suspension structure in which a lower arm supporting left and right front wheels is swingably coupled to a suspension cross member.
The suspension cross member is configured to exhibit a closed cross-sectional structure by overlapping the upper member plate and the lower member plate and combining the edges thereof from the viewpoint of weight reduction and the like.
The suspension cross member extends in the vehicle width direction between the left and right front wheels, and has openings that are directed outward in the vehicle width direction at the rear of both ends in the vehicle width direction. It is attached.
The side of the lower arm that is opposite to the side that supports the front wheels is branched into a front arm that is positioned forward in the vehicle longitudinal direction and a rear arm that is positioned rearward.
The front arm is swingably coupled to front portions of the suspension cross member at both ends in the vehicle width direction outside the closed cross section of the suspension cross member via front mounting portions.
The rear arm is inserted between the lower member plate and the upper member plate through the opening, and is coupled to the rear portions of the suspension cross member at both ends in the vehicle width direction via the rear attachment portions.
In such a structure, an external force directed toward the rear of the vehicle via the lower arm acts on the suspension cross member via the front arm and the rear arm during vehicle braking or the like.
Such an external force acts as a component force that attempts to rotate the front portion of the suspension cross member, and such a component force acts on the separation start point on the front arm side of the opening, thereby lowering the upper member plate and the lower member plate. There is a concern that the member plate may peel off.
Therefore, in Patent Document 1, in order to suppress the separation between the upper member plate and the lower member plate at the opening divergence start point, the vehicle is located between the upper member plate and the lower member plate rather than the support point of the rear arm. Provided on the inner side in the width direction, the periphery extends from the separation start point on the front arm side of the opening along the inner surface of the upper member plate and the inner surface of the lower member plate in the vehicle front-rear direction, and the upper member plate and the lower member plate There has been proposed a structure in which a reinforcement joined to each other is provided, and the reinforcement is joined to the upper member plate and the lower member plate in the vicinity of the separation start point on the front arm side.

JP 2004-203240 A

By the way, when the lower arm is connected to the suspension cross member at two locations, the front mounting portion and the rear mounting portion, if a load directed rearward is input to the front wheel at the time of a vehicle front collision, the lower arm supports the front mounting portion. Swings inward in the vehicle width direction.
It is preferable that the load at the time of the front collision of the vehicle is efficiently transmitted from the lower arm to the rear side member via the suspension cross member in order to disperse and absorb the collision energy by the vehicle body.
Therefore, if the lower arm is restrained from swinging inward in the vehicle width direction, it is advantageous for more efficiently transmitting the load applied to the lower arm to the rear side member.
The present invention has been made in view of the above circumstances, and an object thereof is to provide a vehicle front wheel suspension structure that is advantageous in efficiently transmitting a load at the time of collision to a side member.

In order to achieve the above object, the present invention is configured by combining the edges of the lower member plate and the upper member plate that are spaced apart from each other vertically, and extends in the vehicle width direction between the left and right front wheels. A suspension cross member having both ends in the vehicle front-rear direction attached to side members at both ends in the vehicle width direction and having an opening directed outward in the vehicle width direction at an intermediate portion in the vehicle front-rear direction at both ends in the vehicle width direction; A front arm that supports a front wheel at an outer end in a vehicle width direction, and a lower arm provided with a front mounting portion and a rear mounting portion at a front and rear interval at an inner end in the vehicle width direction, And the rear mounting portion are inserted between the lower member plate and the upper member plate from the opening, and are respectively coupled to the suspension cross member so as to be swingable. The suspension cross member is connected to a rear portion in the vehicle longitudinal direction at both ends in the vehicle width direction of the suspension cross member, and the rear portion and the side member are connected by a stay extending rearward from the rear portion, and the rear attachment A front end of the stay is located on the rear side of the vehicle, the rear mounting portion is disposed on the upper surface of the lower member plate, and the front end of the stay is disposed on the lower surface of the lower member plate. When the lower arm swings inward in the vehicle width direction while being displaced rearward, the rear attachment portion and the front end of the stay can be contacted via the lower member plate, and the rear attachment portion A flange projecting downward is provided at the edge of the lower member plate, and a flange projecting downward is provided at the edge of the front end of the stay. , Contact through the lower member plate and the front end of the said rear mounting portion stays, characterized in that it is carried out by said flange of the front end of the said flange of the rear mounting portion stays.

According to the present invention, when the rear arm mounting portion of the lower arm is displaced rearward due to the load input by the front collision of the vehicle, the rear arm is rear mounted when the front mounting portion is about to swing inward in the vehicle width direction. The portion comes into contact with the front end of the stay, and the displacement of the lower arm in the vehicle width direction is suppressed.
Therefore, it is suppressed that the load input by the front collision of the vehicle is input to the inner side in the vehicle width direction.
Therefore, it is advantageous to efficiently transmit the load transmitted to the suspension cross member by the front collision of the vehicle from the rear part of both ends of the suspension cross member in the vehicle width direction to the rear side member, and the collision energy is efficiently dispersed and absorbed by the vehicle body. This is advantageous.
Further , according to the present invention, even when the lower arm is disposed inside the suspension cross member, the displacement of the lower arm in the vehicle width direction is reliably suppressed, and the load input by the frontal collision of the vehicle This is advantageous for efficiently transmitting the suspension from the suspension cross member to the side member, and is advantageous for efficiently dispersing and absorbing the collision energy by the vehicle body.
Further , according to the present invention, the abutting of the lower arm rear attachment portion and the front end of the stay via the lower member plate is more reliably performed, which is advantageous in enhancing the above effect.

It is a side view of the front-wheel suspension structure of the vehicle of embodiment. It is the figure which looked at the front-wheel suspension structure of the vehicle of an embodiment from the vehicles lower part. It is a perspective view of the front-wheel suspension structure of the vehicle of an embodiment. It is A arrow directional view of FIG. It is a B arrow view of FIG. It is a figure which shows the positional relationship of a lower arm, a lower member plate, and a stay at the time of the vehicle front collision seen from the vehicle downward direction. It is CC sectional view taken on the line of FIG. It is sectional drawing which shows the attachment structure of a suspension cross member, a stay, and a side member. (A) It is a disassembled perspective view which shows the attachment state of a stay, (B) The perspective view which shows the attachment state of a stay. It is a figure which shows the positional relationship of the rear attachment part of a suspension cross member and a stay seen from the vehicle downward direction.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 10, reference symbol FR indicates the front side of the vehicle, reference symbol RR indicates the rear of the vehicle, reference symbol UP indicates the upper side of the vehicle, reference symbol DOWN indicates the lower side of the vehicle, and reference symbol HL indicates the vehicle width direction.
As shown in FIGS. 1, 2, and 3, a vehicle 10 to which the present invention is applied includes a pair of side members 12 that extend in the vehicle longitudinal direction at intervals in the vehicle width direction, and a vehicle width longitudinal direction. A plurality of cross members (not shown) extending in the vehicle width direction at an interval and connecting the pair of side members 12 and the front wheel suspension structure 14 according to the present embodiment are configured.
The side member 12 includes a front portion 12A extending in the horizontal direction, an inclined portion 12B that is displaced downward from the rear end of the front portion 12A toward the rear of the vehicle, and a rear portion extending in the horizontal direction from the rear end of the inclined portion 12B. The intermediate part 12C which exists is included.
Further, both ends of a bumper reinforcement 13 extending in the vehicle width direction are connected to the front end of the side member 12.

The front wheel suspension structure 14 extends between the left and right front wheels 16 in the vehicle width direction, and both ends of the vehicle width direction are attached to the side members 12, and the front wheel 16 is supported by the suspension cross member 18. It includes a pair of lower arms 20 that are coupled so as to be swingable.
The suspension cross member 18 is configured by joining the edges of the lower member plate 18A and the upper member plate 18B spaced apart from each other.
At both ends in the vehicle width direction of the suspension cross member 18, openings 1802 directed outward in the vehicle width direction are provided in an intermediate portion in the vehicle longitudinal direction.

The suspension cross member 18 is attached to the lower surface of the side member 12 at six locations: a front portion 1804 at both ends in the vehicle width direction, an intermediate portion 1806 at both ends in the vehicle width direction, and a rear portion 1808 at both ends in the vehicle width direction. ing.
More specifically, the front portion 1804 in the vehicle front-rear direction at both ends in the vehicle width direction of the suspension cross member 18 is attached to the front portion 12A of the side member 12 via the subframe 22 extending in the front-rear direction of the vehicle 10. Yes. That is, as shown in FIG. 1, the front end of the subframe 22 is fastened by a bolt in a state of being applied to a mounting portion (not shown) projecting downward from the front portion 12 </ b> A of the side member 12. The rear end of the sub-frame 22 is sandwiched between the upper member plate 18B and the lower member plate 18A, and the bolt 2 (see FIG. 5) passes through the upper member plate 18B, the rear end of the sub-frame 22 and the lower member plate 18A. ) And nuts.

As shown in FIG. 1, an intermediate portion 1806 in the vehicle front-rear direction is attached to the inclined portion 12 </ b> B of the side member 12 via a bracket 24 at a location near both ends in the vehicle width direction of the suspension cross member 18.
As shown in FIG. 4, the bracket 24 is provided integrally with the lower member plate 18A. That is, the lower end of the bracket 24 is attached to the lower member plate 18A by welding, and the bracket 24 stands up from the lower member plate 18A and extends upward through the upper member plate 18B.
As shown in FIGS. 1 and 4, with the upper end of the bracket 24 applied to the lower surface of the inclined portion 12B of the side member 12, the bolts penetrating the bracket 24 and the side member 12 are inclined portion 12B of the side member 12. It is fastened to a weld nut (not shown) provided on the upper surface of.

As shown in FIGS. 1 and 4, at both ends in the vehicle width direction of the suspension cross member 18, the rear portion 1808 in the vehicle front-rear direction and the intermediate portion 12C of the side member 12 extend in the direction from the rear portions at both ends in the vehicle width direction. 26 are connected.
More specifically, the rear portions 1808 of the suspension cross member 18 at both ends in the vehicle width direction are directly attached to the inclined portions 12B of the side member 12, and the rear portions 1808 at both ends in the vehicle width direction are connected to the side member via the stay 26. 12 are attached to the intermediate portion 12C.
As shown in FIGS. 4, 5, 8, 9 </ b> A and 9 </ b> B, the stay 26 includes a main body plate portion 2602 that extends in the vehicle front-rear direction and an outer side in the vehicle width direction of the main body plate portion 2602. An outer flange 2604 that protrudes downward from the end portion and an inner flange 2606 that protrudes downward from the end portion of the main body plate portion 2602 in the vehicle width direction are provided.
Accordingly, the outer flange 2604 and the inner flange 2606 that protrude downward are located on both sides of the front end of the stay 26 in the vehicle width direction.
The upper member plate 18 </ b> B is abutted against the lower surface of the inclined portion 12 </ b> B of the side member 12 at the position of the rear portion 1808 of both ends of the suspension cross member 18 in the vehicle width direction.

The front end of the main body plate portion 2602 of the stay 26 is abutted against the lower surface of the lower member plate 18A of the rear portion 1808 of both ends in the vehicle width direction of the suspension cross member 18, and the rear end of the main body plate portion 2602 of the stay 26 is the side member 12. It is applied to the lower surface of the intermediate portion 12C.
As shown in FIG. 8, the upper end of the spacer 28 is applied to the lower surface of the upper member plate 18 </ b> B located at the inner portion in the vehicle width direction at the rear portions 1808 at both ends in the vehicle width direction of the suspension cross member 18. The lower end protrudes below the lower surface of the lower member plate 18A.
In this state, as shown in FIGS. 8, 9 </ b> A, and 9 </ b> B, the bolt 2 </ b> A that penetrates the spacer 28 and the bolt insertion hole 2610 at the front end of the stay 26 is formed on the upper surface of the inclined portion 12 </ b> B of the side member 12. It is fastened to the provided weld nut 4.
By fastening the bolts 2 </ b> A, the vehicle width direction inner portions of the rear portions 1808 of both ends of the suspension cross member 18 in the vehicle width direction are directly attached to the inclined portions 12 </ b> B of the side members 12.

The inner diameter of the bolt insertion hole 2610 at the front end of the stay 26 is larger than the outer diameter of the head of the bolt 2A and the spacer 26. Therefore, the inner periphery of the bolt insertion hole 2610, the head of the bolt 2A, and the spacer 26 An annular gap is interposed between the outer periphery of each of the two.
Therefore, at the time of a frontal collision of the vehicle, a lower arm rear mounting portion, which will be described later, abuts the front end of the stay 26 via the lower member plate 18A, and a load toward the vehicle rear is input from the lower arm rear mounting portion to the stay 26. When the inner peripheral portion of the bolt insertion hole 2610 of the stay 26 is engaged with the head of the bolt 2A and the outer peripheral portion of the spacer 26, the load from the lower arm is efficiently transmitted to the side member 12 via the bolt 2A. It is advantageous.

As shown in FIGS. 9 (A) and 9 (B), the vehicle width direction outer side portion of the rear portion 1808 in the vehicle front-rear direction at both ends in the vehicle width direction of the suspension cross member 18 penetrates the bolt insertion hole 2612 at the front end of the stay 26. It is fastened with a bolt 2B.
As shown in FIGS. 8, 9A, and 9B, the rear end of the main body plate portion 2602 of the stay 26 is in contact with the bottom surface of the intermediate portion 12C of the side member 12, and the bolt of the stay 26 A bolt 2 </ b> C passing through the insertion hole 2614 is fastened to a weld nut 4 provided on the upper surface of the intermediate portion 12 </ b> C of the side member 12.

In FIG. 3, reference numeral 30 denotes a front mount that supports a power plant (not shown) in front of the suspension cross member 18, and reference numeral 32 denotes a rear mount that supports the power plant in the rear of the suspension cross member 18. . In the case of a gasoline or diesel vehicle, the power plant is the engine and transmission. In the case of an electric vehicle, when the motor is disposed in front of the suspension cross member 18, the power plant is a motor. In the case of a hybrid vehicle, when the engine, transmission, and motor are arranged in front of the suspension cross member 18, the power plant is the engine, transmission, and motor.
In the present embodiment, the front mount 30 includes a mount bracket 3002 that extends in the vehicle width direction and has both ends spanned over the front portions of the left and right subframes 22, both ends of the mount bracket 3002, and the front portion of the subframe 22. And a mount member 3004 for connecting the two. The rear mount 32 includes a mount member 3202 that couples the rear portion of the power plant and the center of the rear portion of the upper member plate 18B of the suspension cross member 18 in the vehicle width direction.

As shown in FIG. 2, the lower arm 20 extends in the vehicle width direction and supports the front wheel 16 at an outer end portion in the vehicle width direction.
As shown in FIGS. 4 and 5, a front mounting portion 2002 and a rear mounting portion 2004 are provided before and after the inner end of the lower arm 20 in the vehicle width direction.
More specifically, as shown in FIG. 5, the lower arm 20 includes a first arm portion 20A extending in the vehicle width direction, and a first arm portion extending rearward from the inner side in the vehicle width direction of the first arm portion 20A. 2 arms 20B.
The first arm portion 20A and the second arm portion 20B include a main body plate portion 2010 and flanges 2012 that protrude downward from both sides of the main body plate portion 2010 in the width direction.
As shown in FIGS. 5, 6, and 7, the rear mounting portion 2004 has a cylindrical shape formed below the rear portion of the main body plate portion 2010 that constitutes the second arm portion 20 </ b> B and the rear portion of the main body plate portion 2010. The outer cylinder 3402 of the rear bush 34B described later is inserted into the flange 2020. The front mounting portion is also formed in the front portion of the main body plate portion 2010 constituting the second arm portion 20B and the outer cylinder 3402 of the front bushing 34A, which will be described later, formed in the front portion of the main body plate portion 2010 as in the rear bush 34B. Is configured to include a cylindrical flange 2020 into which is inserted.
Therefore, the front mounting portion 2002 and the rear mounting portion 2004 are provided before and after the main body plate portion 2010 of the second arm portion 20B.

The second arm portion 20B including the front attachment portion 2002 and the rear attachment portion 2004 is inserted between the lower member plate 18A and the upper member plate 18B through the opening 1802, and is respectively interposed between the front bush 34A and the rear bush 34B. The suspension cross member 18 is swingably coupled.
Therefore, the front mounting portion 2002 and the rear mounting portion 2004 are disposed on the upper surface of the lower member plate 18A.
As shown in FIG. 7, the front bush 34 </ b> A and the rear bush 34 </ b> B are attached to the outer cylinder 3402 supported by the front mounting portion 2002 of the lower arm 20 and the flange 2020 of the rear mounting portion 2004, and the inner peripheral surface of the outer cylinder 3402. An attached elastic member 3404 and an inner cylinder 3406 attached to the inner peripheral surface of the elastic member 3404 are provided.
Both ends of the inner cylinder 3406 in the axial direction are sandwiched between the upper member plate 18B and the lower member plate 18A, and the inner cylinder 3406 is connected to the lower member plate via bolts (not shown) penetrating the plates 18A and 18B and the inner cylinder 3406. It is fastened to 18A.

  In the present embodiment, the lower arm 20 is swingably coupled to the suspension cross member 18 using the bushes 34A and 34B whose axis is directed in the vertical direction of the vehicle 10. However, a mechanism for swingably supporting the lower arm 20 about an axis oriented in the vehicle front-rear direction may be used, and various conventionally known structures for connecting the lower arm 20 to the suspension cross member 18 so as to be swingable. Can be adopted.

As shown in FIG. 5, one of the flanges 2012 projecting downward from both sides in the width direction of the main body plate portion 2010 is the front-rear direction of the vehicle on the outer side in the vehicle width direction of the second arm portion 20B in the second arm portion 20B. It becomes the outer side flange 2012A extended in this. The other side of the flange 2012 is an inner flange 2012B extending in the vehicle front-rear direction on the inner side in the vehicle width direction of the second arm portion 20B.
The rear end of the outer flange 2012A is located outside the rear attachment portion 2004 in the vehicle width direction, and the rear end of the inner flange 2012B is located inside the rear attachment portion 2004 in the vehicle width direction.
As shown in FIGS. 4 and 5, the front end of the stay 26 is located behind the rear attachment portion 2004 in the vehicle. The rear end 2014A of the outer flange 2012A is located at a location facing the front end 2608 of the inner flange 2606 of the stay 26 via the lower member plate 18A.
Therefore, as shown in FIG. 6, the rear mounting portion 2004 and the front end of the stay 26 can come into contact with each other via the lower member plate 18 </ b> A at the time of a frontal collision of the vehicle. Specifically, the abutting of the rear attachment portion 2004 and the front end of the stay 26 via the lower member plate 18 </ b> A causes the rear end 2014 of the outer flange 2012 of the rear attachment portion 2004 and the front end 2608 of the inner flange 2606 of the stay 26. And done.

As shown in FIGS. 4 and 10, the lower member plate 18A constituting the rear portion 1808 of both ends in the vehicle width direction of the suspension cross member 18 extends from the rear portion of the portion 1820 to which the rear mounting portion 2004 is attached to the rear. And the rear surface 1824 extending in parallel with the portion 1820 from the rear end of the inclined surface 1822, and the front end of the stay 26 is superimposed on the lower surface of the rear surface 1824.
The inclined surface portion 1822 is provided with a concave portion 1826 that is recessed upward, and the front end of the stay 26 in the vehicle width direction (the front end 2608 of the inner flange 2606) is accommodated in the concave portion 1826.
Since the front end 2608 of the stay 26 is accommodated in the recess 1826, the rear mounting portion 2004 and the front end 2608 of the stay 26 can be efficiently brought into contact with each other via the lower member plate 18A at the time of front collision of the vehicle. The vertical positions of the attachment portion 2004 and the front end 2608 of the stay 26 are adjusted.

Next, the function and effect will be described.
In the state shown in FIG. 5, when the vehicle 10 collides forward, the front part of the vehicle body is crushed, and a load is input to the front part 12 </ b> A of the side member 12 and a load toward the rear is also input to the front wheel 16.
At this time, the load input from the front portion 12A of the side member 12 to the subframe 22 acts on the front portions 1804 at both ends in the vehicle width direction of the suspension crossmember 18 via the subframe 22, thereby causing the suspension crossmember 18 to move. Front portions 1804 at both ends in the vehicle width direction are deformed rearward.
Further, the load input to the front wheel 16 is transmitted to the lower arm 20, and therefore the lower arm 20 tries to swing the rear mounting portion 2004 inward in the vehicle width direction with the front mounting portion 2002 as a fulcrum.
Therefore, as shown in FIG. 6, the lower arm 20 is displaced rearward together with the front portions 1804 at both ends of the suspension cross member 18, and the rear mounting portion 2004 swings inward in the vehicle width direction with the front mounting portion 2002 as a fulcrum. And

In the present embodiment, since the front end of the stay 26 is located behind the rear mounting portion 2004 of the lower arm 20, as shown in FIG. 6, the lower arm 20 is displaced rearward due to the front collision of the vehicle. When swinging inward in the width direction, the rear mounting portion 2004 comes into contact with the front end of the stay 26 via the lower member plate 18A, and displacement of the lower arm 20 inward in the vehicle width direction is suppressed.
Therefore, it is suppressed that the load input by the front collision of the vehicle 10 is input to the inner side in the vehicle width direction.
Therefore, the load input by the front collision of the vehicle 10 is transmitted from the front portion 12A of the side member 12 to the suspension cross member 18 via the subframe 22, and from the front wheel 16 to the suspension cross member 18 via the lower arm 20. Communicated.
The load transmitted to the suspension cross member 18 is directly transmitted to the side member 12 from the rear portions 1808 of both ends of the suspension cross member 18 in the vehicle width direction, and stays from the rear portions 1808 of both ends of the suspension cross member 18 in the vehicle width direction. It is transmitted to the side member 12 through 26.
In addition, the load transmitted from the lower arm 20 to the stay 26 is transmitted to the side member 12 via the stay 26 by the rear attachment portion 2004 of the lower arm 20 swinging inward in the vehicle width direction coming into contact with the front end of the stay 26. Is done.
Therefore, it is advantageous to efficiently transmit the load input by the front collision of the vehicle 10 from the suspension cross member 18 to the side member 12, and it is advantageous to efficiently disperse and absorb the collision energy by the vehicle body.

Further, in the present embodiment, the rear attachment portion 2004 of the lower arm 20 is disposed on the upper surface of the lower member plate 18A, and the front end of the stay 26 is disposed on the lower surface of the lower member plate 18A. The front end can be contacted via the lower member plate 18A.
Therefore, even when the lower arm 20 is disposed inside the suspension cross member 18, the displacement of the lower arm 20 toward the inside in the vehicle width direction is reliably suppressed, and the load input by the front collision of the vehicle 10 is suspended. This is advantageous in efficiently transmitting the cross member 18 to the side member 12, and is advantageous in efficiently dispersing and absorbing the collision energy by the vehicle body.

In the present embodiment, the abutting of the rear attachment portion 2004 and the front end of the stay 26 via the lower member plate 18A causes the rear end 2014 of the outer flange 2012A of the rear attachment portion 2004 to the inner flange 2606 of the stay 26. The front end 2608 of the
Therefore, the rear attachment portion 2004 and the front end of the stay 26 are more reliably brought into contact with each other via the lower member plate 18A, so that the displacement of the lower arm 20 toward the inner side in the vehicle width direction is more reliably suppressed. This is advantageous in efficiently transmitting the load input by the front collision from the suspension cross member 18 to the side member 12, and more advantageous in efficiently dispersing and absorbing the collision energy by the vehicle body.

10 Vehicle 12 Side member 14 Front wheel suspension structure 16 Front wheel 18 Suspension cross member 18A Lower member plate 18B Upper member plate 1802 Opening 1804 Front portion 1806 Intermediate portion 1808 Rear portion 20 Lower arm 20A First arm portion 20B Second arm portion 2002 Front mounting portion 2004 Rear mounting portion 2010 Main body plate portion 2012 Flange 2012A Outer flange 2012B Inner flange 2014 Rear end 22 Subframe 26 Stay 2602 Main body plate portion 2604 Outer flange 2606 Inner flange 2608 Front end 34A Front bush 34B Rear bush

Claims (1)

It consists of the edges of the lower member plate and the upper member plate that are spaced apart from each other, and extends in the vehicle width direction between the left and right front wheels. At both ends in the vehicle width direction, both ends in the vehicle front-rear direction A suspension cross member that is attached to the side member and has an opening directed outward in the vehicle width direction at an intermediate portion in the vehicle longitudinal direction at both ends in the vehicle width direction;
The front wheel is supported at the outer end in the vehicle width direction, and the lower arm is provided with the front mounting portion and the rear mounting portion at the front and rear intervals at the inner end portion in the vehicle width direction.
The front mounting portion and the rear mounting portion are inserted between the lower member plate and the upper member plate from the opening, and are respectively swingably coupled to the suspension cross member.
A vehicle front wheel suspension structure,
The suspension cross member is connected to the rear part in the vehicle longitudinal direction at both ends in the vehicle width direction, and the rear part and the side member are connected by a stay extending rearward from the rear part,
The front end of the stay is located behind the rear mounting portion of the vehicle ,
The rear mounting portion is disposed on the upper surface of the lower member plate,
A front end of the stay is disposed on a lower surface of the lower member plate;
When the lower arm swings inward in the vehicle width direction while being displaced rearward due to a frontal collision of the vehicle, the rear mounting portion and the front end of the stay can contact via the lower member plate,
A flange projecting downward is provided at an edge of the lower member plate where the rear mounting portion is located,
A flange protruding downward is provided at the edge of the front end of the stay,
The contact between the rear attachment portion and the front end of the stay via the lower member plate is performed by the flange of the rear attachment portion and the flange of the front end of the stay.
A vehicle front wheel suspension structure characterized by that.

Images