JP6481719B2 - Vehicle front subframe structure - Google Patents

Description

  The present invention relates to a front subframe structure of a vehicle that supports a front suspension, and more specifically, a subframe that supports an A-type suspension arm is provided, and an outer opening formed at an outer portion in the vehicle width direction of the subframe. The suspension arm front part is inserted and supported, and an inner opening is formed in the vehicle width direction inner side of the subframe so as to face the outer opening, and a part of the support part of the suspension arm front part is the inner side. The present invention relates to a front subframe structure of a vehicle that is arranged to project from an opening to the front of the vehicle and inward in the vehicle width direction.

Generally, a lower arm as an A-type suspension arm includes a knuckle support portion on the front wheel side, and a front arm bush and a rear arm bush supported by a subframe.
From the viewpoint of steering stability, it is preferable that the position of the front arm bush on the sub-frame side in the vehicle front-rear direction be directly beside the position of the knuckle support portion on the front wheel side of the lower arm described above. ing.

That is, if the position of the front arm bush is shifted rearward in the vehicle front-rear direction with respect to the knuckle support portion of the lower arm, a force in the front-rear direction is generated on the front arm bush when a lateral force is input from the front wheel side. Therefore, it is not preferable.
Therefore, it is required to prevent a front / rear direction force from being applied to the front arm bush when a lateral force is input.

Conventionally, a vehicle front subframe structure disclosed in Patent Document 1 has already been invented in order to meet such a demand.
That is, a sub-frame that supports the A-type suspension arm is provided, and the front portion of the suspension arm is inserted and supported in the outer opening formed on the outer side in the vehicle width direction of the sub-frame, and is opposed to the outer opening. An inner opening is formed on the inner side in the vehicle width direction of the sub-frame, and a part of the support portion of the front portion of the suspension arm is arranged to protrude from the inner opening to the front of the vehicle and inward in the vehicle width direction. It is.

  In the conventional structure disclosed in Patent Document 1, the opening area of the inner opening formed in the subframe is increased, and the amount of protrusion from the front arm bush of the lower arm and the inner opening of the support member that supports the lower arm is increased. If it is increased, the mounting position of the front arm bush can be set as far forward as possible in the vehicle front-rear direction, and the generation of force in the front-rear direction when lateral force is input can be suppressed, thereby improving steering stability. Since a large opening is formed in the vicinity of the attachment portion of the lower arm front, including the outer opening into which the lower arm front is inserted, there is a concern about a decrease in support rigidity, and there is room for improvement in this respect.

JP 2014-169043 A

  Accordingly, an object of the present invention is to provide a front subframe structure for a vehicle that can reinforce the support portion of the front portion of the suspension arm while reinforcing the left and right subframes with a cross bar.

In the vehicle front subframe structure according to the present invention, a subframe for supporting an A-type suspension arm is provided, and the front portion of the suspension arm is inserted and supported in an outer opening formed in an outer portion in the vehicle width direction of the subframe. In addition, an inner opening is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening, and a part of the support portion of the front portion of the suspension arm extends forward from the inner opening and in the vehicle width direction. A front sub-frame structure of a vehicle that protrudes inward and includes a crossbar that connects the left and right support portions in the vehicle width direction, and constitutes the support portion of the suspension arm front portion. A bracket is joined to the front part of the outer opening, and a reinforcing member is provided to straddle the front bracket and the front subframe. It was those.
The A-type suspension arm described above may be set as a lower arm.

  According to the above configuration, the support portions of the left and right suspension arm front portions are connected in the vehicle width direction by the cross bar. Therefore, the cross arm supports the suspension arm front portion while reinforcing the left and right subframes. The part can be reinforced. As a result, the amount of protrusion from the inner opening of the support part can be increased, the attachment position of the suspension arm front part can be set as far forward as possible in the vehicle longitudinal direction, and generation of force in the longitudinal direction when lateral force is input is suppressed. Thus, the steering stability can be improved.

  In addition, a front bracket that constitutes the support portion of the front portion of the suspension arm is joined to the front portion of the outer opening, and a reinforcing member is provided to be disposed across the front bracket and the front subframe. Therefore, the vehicle width direction outer side of the support portion of the front portion of the suspension arm can be reinforced by both the above-described front side bracket and the reinforcing member.

The vehicle front subframe structure according to the present invention also includes a subframe for supporting the A-type suspension arm, and the suspension arm front portion is inserted and supported in an outer opening formed in the vehicle width direction outer portion of the subframe. In addition, an inner opening is formed at the inner side in the vehicle width direction of the subframe so as to face the outer opening, and a part of the support portion of the front portion of the suspension arm extends from the inner opening to the front of the vehicle and the vehicle. A front sub-frame structure for a vehicle that protrudes inward in the width direction, wherein a cross bar that connects the left and right support portions in the vehicle width direction is provided, and the fastening position of the cross bar to the sub frame Is within the vehicle front-rear width of the outer opening, and the support portion of the front portion of the suspension arm is provided on the subframe. .

  In one embodiment of the present invention, the A-type suspension arm includes a suspension arm rear portion, and the suspension arm rear portion is fastened together with the attachment portion of the subframe to the vehicle body.

  According to the above configuration, the collision load is transmitted to the rear portion of the suspension arm and the attachment portion of the subframe to the vehicle body via the reinforcing member and the suspension arm at the time of the vehicle front collision, and the subframe is separated from the vehicle body. be able to.

  In one embodiment of the present invention, the cross bar is fastened to the inner side in the vehicle width direction of the support portion at the front portion of the suspension arm.

  According to the above configuration, the length of the cross bar in the vehicle width direction can be shortened to reduce its weight.

  In one embodiment of the present invention, the cross bar is fastened to the rear portion of the inner opening.

  According to the said structure, the rear part of an inner side opening part can be reinforced with the above-mentioned cross bar.

  In one embodiment of the present invention, a rear bracket constituting the support portion of the front portion of the suspension arm extends and is joined to the inner side wall of the subframe, and the crossbar connects the rear bracket to the vehicle. It is fastened at multiple points across the front-rear direction.

  According to the said structure, the rigidity of the junction part vicinity of a rear side bracket can be reinforced with a cross bar.

The vehicle front sub-frame structure according to the present invention further includes a sub-frame for supporting the A-type suspension arm, and the suspension arm front portion is inserted and supported in an outer opening formed in the vehicle width direction outer portion of the sub-frame. In addition, an inner opening is formed at the inner side in the vehicle width direction of the subframe so as to face the outer opening, and a part of the support portion of the front portion of the suspension arm extends from the inner opening to the front of the vehicle and the vehicle. A front sub-frame structure for a vehicle that protrudes inward in the width direction, and includes a cross bar that connects the left and right support portions in the vehicle width direction, and constitutes the support portion at the front portion of the suspension arm. The front bracket is joined to the front part of the outer opening, and is disposed across the front bracket and the front subframe. In which wood is provided.

According to the above configuration, the support portions of the left and right suspension arm front portions are connected in the vehicle width direction by the cross bar. Therefore, the cross arm supports the suspension arm front portion while reinforcing the left and right subframes. The part can be reinforced.
Moreover, the vehicle width direction outer side in the support part of a suspension arm front part can be reinforced with both the above-mentioned front side bracket and a reinforcement member.

  According to the present invention, there is an effect that the support portion at the front portion of the suspension arm can be reinforced while reinforcing the left and right subframes with the cross bar.

The top view which shows the front sub-frame structure of the vehicle of this invention Bottom view of FIG. Main part enlarged bottom view showing the front subframe structure of the vehicle The principal part enlarged plan view which shows the front sub-frame structure of a vehicle (A) is an enlarged view of the main part of FIG. 4, (b) is an enlarged view of the main part of FIG. 3 is a cross-sectional view taken along line AA in FIG. BB cross-sectional view of FIG. 4 is a cross-sectional view of the main portion along the line CC in FIG. DD sectional view taken along line D-D in FIG. 3 is a cross-sectional view of the main part along the line EE in FIG.

For the purpose of reinforcing the support part at the front part of the suspension arm while reinforcing the left and right parts of the subframe with the crossbar, a subframe for supporting the A-type suspension arm is provided. A suspension arm front portion is inserted and supported in the formed outer opening portion, and an inner opening portion is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening portion, thereby supporting the suspension arm front portion. A part of the front part of the vehicle is a front sub-frame structure that projects from the inner opening to the front of the vehicle and inward in the vehicle width direction, and includes a crossbar that connects the left and right support parts in the vehicle width direction. provided, the front bracket constituting the supporting portion of the suspension arm front is joined to the front portion of the outer opening portion, the front bra Reinforcing members disposed is realized by configuration in Ru provided across Tsu preparative and its front sub-frame.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 shows a front subframe structure of a vehicle, FIG. 1 is a plan view showing the front subframe structure, FIG. 2 is a bottom view of FIG. 1, and FIG. FIG. 4 is an enlarged plan view of the main part shown in a state where the lower side is viewed from the middle part in the vertical direction of the subframe.

  5 (a) is an enlarged view of the main part of FIG. 4, FIG. 5 (b) is an enlarged view of the main part of FIG. 3, FIG. 6 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along line BB in FIG. 3, FIG. 8 is a cross-sectional view taken along the line CC in FIG. 4, FIG. 9 is a cross-sectional view taken along line DD in FIG. It is arrow sectional drawing of the principal part in alignment with the EE line | wire of FIG.

  1 and 2, a front sub-frame A is provided in the lower part of the engine room at the front of the vehicle. The front sub-frame A supports left and right lower arms 10 as left and right suspension arms of the A type. The cross member main body 20, a pair of left and right side members 35, 35 (specifically, front side members, so-called extensions) extending from the left and right front portions of the cross member main body 20 to the front of the vehicle, and the pair of left and right side members And a front cross member 40 having a substantially gate-shaped cross section that connects the front end portions of 35 and 35 in the vehicle width direction.

  As shown in FIGS. 1 and 2, the side member 35 described above is configured by joining and fixing an inner panel 36 and an outer panel 37. Between the inner panel 36 and the outer panel 37, the front and rear of the vehicle are arranged. A closed cross section extending in the direction is formed.

  A sub-crash can 43 is attached to the front end portion of the side member 35 via a set plate 41 and a mounting plate 42. Between the front end portions of the pair of left and right sub-crash cans 43, 43, a vehicle width direction is provided. A lower bumper reinforcement 44 (which agrees with the lower bumper beam) is provided as a bumper reinforcement extending to the front.

  A vehicle body mounting portion 45 (so-called pillar portion) extending in the vertical direction is provided at the front end portion of the side member 35 and immediately after the set plate 41. The vehicle body attachment portion 45 has an attachment member 46 extending upward. The vehicle body attachment portion 45 and the attachment member 46 described above are for attaching the side member 35 to a lower portion of a front side frame (not shown) as a vehicle body. It is a member.

  As shown in FIGS. 3 and 4, the lower arm 10 includes a knuckle support portion 11 located on the outer side in the vehicle width direction and a lower arm bush 12F on the front side as a vehicle body side mounting portion located on the inner front side in the vehicle width direction. Hereinafter, it is simply referred to as a front bush 12F), and a rear lower arm bush 12R (hereinafter simply abbreviated as a rear bush 12R) as a vehicle body side mounting portion located at the inner rear portion in the vehicle width direction. .

As shown in FIGS. 3, 4, and 5, the front bush 12 </ b> F includes an inner cylinder 1, an outer cylinder 2, and a rubber member 3 interposed between the inner cylinder 1 and the outer cylinder 2.
As shown in FIGS. 3 and 4, the rear bush 12 </ b> R also includes an inner cylinder 4, an outer cylinder 5, and a rubber member 6 interposed between the inner cylinder 4 and the outer cylinder 5. Here, the axial line of the front bush 12F is oriented in the vehicle longitudinal direction, and the axial line of the rear bush 12R is oriented in the vertical direction of the vehicle.

  As shown in FIGS. 1 and 2, the cross member body 20 (so-called suspension cross) extends from the upper panel 21, the front lower panel 22, the rear lower panel 23, and the left and right sides of the upper panel 21 to the front of the vehicle. And an upper panel 24.

  Both the above-described extended upper panel 24 and the front lower panel 22 form an extended portion 25 that extends from the upper panel 21 and the rear lower panel 23 to the front of the vehicle. The rear end portion is connected and fixed to the front end portions of the pair of left and right extending portions 25, 25.

  As shown in FIGS. 6, 7, and 8, the lower arm 10 is configured by joining and fixing an upper arm member 13 and a lower arm member 14, and FIGS. 1, 2, 6, and 8. As shown in FIG. 7, the rear support for supporting the rear bush 12R of the lower arm 10 is supported by both the upper panel 21 and the rear lower panel 23 so as to protrude outward in the vehicle width direction from the left and right of the rear portion of the cross member body 20. A portion 26 is formed.

  As shown in FIGS. 1 and 2, the lower arm 10 as a suspension arm includes an arm rear portion 10R extending substantially in the longitudinal direction of the vehicle from the position corresponding to the front bush 12F to the position where the rear bush 12R is arranged. As shown in FIG. 7, the rear bush 12R described above is integrally attached to the rear end of the arm rear portion 10R, and the arm rear portion 10R and the cross member main body 20 are connected to the vehicle body by using bolts 15. The rear support portion 26 that is an attachment portion is configured to be fastened together with the vehicle body (the rear portion of the front side frame).

  As shown in FIGS. 6 and 8, the position corresponding to the front bush 12 </ b> F in the lower arm 10 and the outer cylinder 2 of the front bush 12 </ b> F are connected by upper and lower support arms 16 and 17.

  As shown in FIG. 8, an outer opening 27 is formed on the outer side in the vehicle width direction of the extending portion 25 constituting the front subframe A, and the upper and lower sides as the suspension arm front portion are formed in the outer opening 27. Support arms 16 and 17 are inserted, and the front portion of the lower arm 10 is supported by the front and rear brackets 31 and 32 described later via the front bush 12F via the upper and lower support arms 16 and 17, respectively.

  As shown in FIGS. 3 and 4, an inner opening 28 is formed on the inner side in the vehicle width direction of the extended upper panel 24 of the extended portion 25 so as to face the outer opening 27 described above.

  As shown in the figure, the front bush 12F is supported by a front bracket 31 and a rear bracket 32 fixed to the extending portion 25. Specifically, by tightening a nut 34 to a bolt 33 that protrudes from the front of the front bracket 31 to the rear of the rear bracket 32 via the inner cylinder 1 of the front bush 12F, the pair of front and rear brackets 31 and 32 are separated. Further, the front bush 12F is supported.

  As shown in FIG. 5, the front bracket 31 includes a bracket body 31a, a lower piece 31b bent forward from the lower end of the bracket body 31a, and a diagonally forward side from the outer end in the vehicle width direction of the bracket body 31a. And the lower piece 31b is fixed to a later-described lower piece 32b of the rear bracket 32, as shown in FIG. As described above, the above-described outer piece 31c is fixed to the inner side of the outer piece portion of the extended upper panel 24 in the vehicle width direction.

  As shown in FIGS. 5 and 7, the rear bracket 32 includes a bracket body 32a, a lower piece 32b bent forward from the lower end of the bracket body 32a, and the bracket body 32a in the vehicle width direction. And an inner piece 32c bent obliquely rearward from the end. As shown in FIG. 7, the lower piece 32b is fixed to the front lower panel 22, as shown in FIG. The above-described inner piece 32c is fixed to the inner side of the extending upper panel 24 in the vehicle width direction.

  The front bush 12F, the front bracket 31, and the rear bracket 32 constitute the support portion 30 at the front portion of the lower arm 10. As shown in FIGS. 3 and 4, a part of the support portion 30 is disposed so as to protrude from the above-described inner opening 28 toward the front of the vehicle and inward in the vehicle width direction. The front bushing 12F is attached to the front of the vehicle as far as possible in the front-rear direction of the vehicle, and the generation of force in the front-rear direction at the time of lateral force input is suppressed to improve steering stability.

Moreover, as shown in FIGS. 1, 2, 4, and 8, a cross bar 50 that connects the left and right support portions 30, 30 in the vehicle width direction is provided. In this embodiment, the left and right front lower panels 22, 22 at the position of the support portion 30 are connected by a cross bar 50 in the vehicle width direction.
In this way, by connecting the support portions 30, 30 at the front of the lower arm 10 in the vehicle width direction with the above-described crossbar 50, the crossbar 50 reinforces the left and right sides of the front subframe A, The support portion 30 at the front of the lower arm 10 is reinforced.

  As shown in FIGS. 4 and 5, the front bracket 31 constituting the support portion 30 of the front portion of the lower arm 10 has an outer piece 31c bonded and fixed to the front portion of the outer opening 27, as shown in FIG. ), A gusset 29, which is a reinforcing member, is provided across the front bracket 31 and the extended upper panel 24 as a front subframe.

  As shown in FIGS. 5, 6, and 10, the gusset 29 includes a gusset body 29a, an upper piece 29b extending upward from the rear end of the gusset body 29a, and an inner end in the vehicle width direction of the gusset body 29a. An inner piece 29c extending downward and an outer piece 29d extending downward from the outer end in the vehicle width direction of the gusset body 29a are provided, and the upper piece 29b of the gusset 29 is joined to the front bracket 31 as shown in FIG. The inner piece 29c is joined and fixed to the inner surface of the inner piece in the vehicle width direction of the extended upper panel 24 as shown in FIG. 10, and the outer piece 29d is fixed to the vehicle of the extended upper panel 24 as shown in FIG. It is bonded and fixed to the inner surface of the outer piece in the width direction.

  Thus, by providing the gusset 29 straddling the front bracket 31 and the extended upper panel 24 in front of the front bracket 31, the vehicle width direction of the support portion 30 at the front portion of the lower arm 10 is achieved by both the front bracket 31 and the gusset 29. It is configured to reinforce the outside.

  As shown in FIGS. 4 and 5, the above-described cross bar 50 is fastened to the inner side in the vehicle width direction of the support portion 30 at the front portion of the lower arm 10, specifically, the inner side in the vehicle width direction of the front bush 12 </ b> F. Thus, the length of the cross bar 50 in the vehicle width direction is shortened to reduce the weight thereof.

  As shown in FIGS. 4 and 5, the cross bar 50 is fastened to the rear portion of the inner opening 28. Thereby, the cross bar 50 is configured to reinforce the rear portion of the inner opening 28.

  Further, as shown in FIGS. 4, 5, and 9, the rear bracket 32 that constitutes the support portion 30 has an inner piece 32 c that is joined to the inner side wall of the extended upper panel 24, The bar 50 is fastened at a plurality of points across the bracket main body 32a of the rear bracket 32 in the vehicle front-rear direction.

  That is, as shown in the figure, the cross bar 50 is fastened using a pair of front and rear bolts 51 and nuts 52 at a position straddling the bracket main body 32a in the vehicle front-rear direction. Accordingly, the cross bar 50 is configured to reinforce the rigidity in the vicinity of the joint portion of the rear bracket 32.

  As shown in FIGS. 1 and 2, the above-described cross bar 50 has a bead 50a extending in the vehicle width direction along the longitudinal direction thereof, and the strength of the cross bar 50 itself by the bead 50a. A plurality of under cover attaching portions 50b extending forward from the front edge are integrally formed on the front edge of the cross bar 50 while improving.

  Further, as shown in FIG. 4, the fastening portion of the cross bar 50 by the bolts 51 and nuts 52 is formed in a widened portion 50c that is enlarged in the vehicle front-rear direction with respect to the other portions, and as shown in FIG. A bent piece 50d extending downward from the outer end in the vehicle width direction of the widened portion 50c is integrally formed, and both the widened portion 50c and the bent piece 50d improve strength at the fastening portion of the crossbar 50. I am trying.

In the figure, reference numeral 53 denotes an extended portion for preventing a small overlap collision that projects outward from the front end portion of the side member 35 in the vehicle width direction. Reference numeral 54 denotes a tower portion extending upward from the base portion of the extended upper panel 24 of the cross member main body 20. The tower portion 54 is a member for attaching the cross member main body 20 to the lower portion of the front side frame. Reference numeral 55 denotes a stabilizer mounting bracket fastened and fixed to the upper panel 21 of the cross member main body 20.
In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, arrow IN indicates the inner side in the vehicle width direction, arrow OUT indicates the outer side in the vehicle width direction, and arrow UP indicates the upper side of the vehicle. Indicates.

  As described above, the front subframe structure of the vehicle according to the embodiment is provided with the front subframe A that supports the A-type suspension arm (see the lower arm 10), and is formed on the outer side in the vehicle width direction of the front subframe A. The suspension arm front portion (the lower arm 10 front portion) is inserted and supported in the outer opening portion 27, and the inner opening portion 28 is formed on the inner side in the vehicle width direction of the front subframe A so as to face the outer opening portion 27. And a front subframe structure of a vehicle in which a part of the support portion 30 of the front portion of the suspension arm (the front portion of the lower arm 10) projects from the inner opening portion 28 toward the front of the vehicle and inward in the vehicle width direction. A cross bar 50 is provided for connecting the left and right support parts 30 in the vehicle width direction (see FIGS. 1 to 4).

  According to this configuration, the support portions 30 and 30 of the left and right suspension arm front portions (the front portion of the lower arm 10) are connected in the vehicle width direction by the cross bar 50. It is possible to reinforce the support portion 30 at the front portion of the suspension arm (the front portion of the lower arm 10) while performing the reinforcement. Thereby, the protrusion amount from the inner side opening part 28 of the said support part 30 can be enlarged, the attachment position of a suspension arm front part (lower arm 10 front part) can be set as much as possible in the vehicle front-back direction front, and a lateral force is input. It is possible to improve the steering stability by suppressing the generation of force in the front-rear direction.

  In one embodiment of the present invention, a front bracket 31 constituting the support portion 30 of the suspension arm front portion (lower arm 10 front portion) is joined to a front portion of the outer opening 27, and the front bracket 31 and its A reinforcing member (see gusset 29) disposed across the front subframe (see the extended upper panel 24) is provided (see FIG. 5).

  According to this structure, the vehicle width direction outer side in the support part 30 of the suspension arm front part (lower arm 10 front part) can be reinforced by both the above-described front bracket 31 and the reinforcing member (gusset 29).

  In one embodiment of the present invention, the A-type suspension arm (lower arm 10) includes a suspension arm rear portion (see arm rear portion 10R), and the suspension arm rear portion (arm rear portion 10R) is formed on the front subframe A. Are fastened together with the mounting portion (rear support portion 26) of the vehicle body (see FIGS. 6 and 7).

  According to this configuration, during the frontal collision of the vehicle, the collision load is applied to the vehicle body of the suspension arm rear part (arm rear part 10R) and the front subframe A via the reinforcing member (gusset 29) and the suspension arm (lower arm 10). The front subframe A can be separated from the vehicle body by being transmitted to the mounting portion (rear support portion 26).

  In one embodiment of the present invention, the cross bar 50 is fastened to the inner side in the vehicle width direction of the support portion 30 in the front portion of the suspension arm (the front portion of the lower arm 10) (see FIG. 4).

  According to this configuration, the length of the cross bar 50 in the vehicle width direction can be shortened to reduce its weight.

  In one embodiment of the present invention, the cross bar 50 is fastened to the rear part of the inner opening 28 (see FIG. 4).

  According to this configuration, the rear portion of the inner opening 28 can be reinforced by the cross bar 50 described above.

  In one embodiment of the present invention, the rear bracket 32 constituting the support portion 30 of the suspension arm front portion (the lower arm 10 front portion) is connected to the inner side wall of the front subframe A (the inner side wall of the extended upper panel 24). And the cross bar 50 is fastened at a plurality of points (see fastening points by bolts 51 and nuts 52) across the rear bracket 32 in the vehicle front-rear direction (see FIG. 4). FIG. 9).

  According to this configuration, the rigidity in the vicinity of the joint portion of the rear bracket 32 can be reinforced by the cross bar 50.

  The vehicle front sub-frame structure according to the above embodiment is also provided with a front sub-frame A that supports an A-type suspension arm (lower arm 10), and an outer opening formed at the outer side in the vehicle width direction of the front sub-frame A. A suspension arm front portion (lower arm 10 front portion) is inserted and supported by the portion 27, and an inner opening 28 is formed on the inner side in the vehicle width direction of the front subframe A so as to face the outer opening 27. A front subframe structure of a vehicle in which a part of a support portion 30 of a suspension arm front portion (a front portion of a lower arm 10) projects from the inner opening portion 28 to the front of the vehicle and inward in the vehicle width direction. A cross bar 50 is provided for connecting the support portions 30 and 30 in the vehicle width direction, and the suspension arm front portion (lower arm) is provided. The front bracket 31 constituting the support portion 30 of the (10 front portion) is joined to the front portion of the outer opening 27, and is disposed across the front bracket 31 and the front subframe (see the extended upper panel 24). A reinforcing member (see gusset 29) is provided (see FIGS. 1 to 5).

According to this configuration, the support portions 30 and 30 of the left and right suspension arm front portions (the front portion of the lower arm 10) are connected in the vehicle width direction by the cross bar 50. It is possible to reinforce the support portion 30 at the front portion of the suspension arm (the front portion of the lower arm 10) while performing the reinforcement.
Moreover, the vehicle width direction outer side in the support part 30 of a suspension arm front part (lower arm 10 front part) can be reinforced with both the above-mentioned front side bracket 31 and a reinforcement member (gusset 29).

In the correspondence between the configuration of the present invention and the above-described embodiment,
The A-type suspension arm of the present invention corresponds to the lower arm 10 of the embodiment,
Similarly,
The subframe corresponds to the front subframe A,
The reinforcing member corresponds to the gusset 29,
The attachment portion of the subframe to the vehicle body corresponds to the rear support portion 26,
The suspension arm rear part corresponds to the arm rear part 10R,
The present invention is not limited to the configuration of the above-described embodiment.

  As described above, according to the present invention, the sub-frame for supporting the A-type suspension arm is provided, and the front portion of the suspension arm is inserted and supported in the outer opening formed in the vehicle width direction outer portion of the sub-frame. An inner opening is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening, and a part of the support part of the front part of the suspension arm is in front of the vehicle and in the vehicle width direction from the inner opening. This is useful for a front subframe structure of a vehicle that protrudes toward the vehicle.

A ... Front subframe (subframe)
10. Lower arm (suspension arm)
10R ... Arm rear (suspension arm rear)
26: Rear support portion (attachment portion of the subframe to the vehicle body)
27 ... Outer opening 28 ... Inner opening 29 ... Gusset (reinforcing member)
30 ... support 31 ... front bracket 32 ... rear bracket 50 ... cross bar

Claims (7)

Provide a sub-frame to support the A-type suspension arm,
The suspension arm front portion is inserted and supported in an outer opening formed in the vehicle width direction outer portion of the subframe,
An inner opening is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening,
A vehicle front sub-frame structure in which a part of the support portion of the front portion of the suspension arm projects from the inner opening to the front of the vehicle and inward in the vehicle width direction,
A cross bar that connects the left and right support parts in the vehicle width direction is provided ,
A front bracket constituting the support portion of the suspension arm front portion is joined to a front portion of the outer opening,
A vehicle front subframe structure provided with a reinforcing member disposed across the front bracket and a subframe in front of the front bracket . Provide a sub-frame to support the A-type suspension arm,
The suspension arm front portion is inserted and supported in an outer opening formed in the vehicle width direction outer portion of the subframe,
An inner opening is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening,
A vehicle front sub-frame structure in which a part of the support portion of the suspension arm front portion projects from the inner opening to the front of the vehicle and inward in the vehicle width direction,
A cross bar that connects the left and right support parts in the vehicle width direction is provided,
The fastening position of the cross bar to the sub-frame is within the vehicle front-rear width of the outer opening,
The support portion at the front portion of the suspension arm is provided on the subframe.
Front subframe structure of the vehicle. The A-type suspension arm has a suspension arm rear part,
The front subframe structure for a vehicle according to claim 1 or 2 , wherein a rear portion of the suspension arm is fastened together with a mounting portion of the subframe to the vehicle body. The vehicle front subframe structure according to claim 3 , wherein the cross bar is fastened to an inner side in a vehicle width direction of the support portion at a front portion of the suspension arm. The vehicle front subframe structure according to claim 4, wherein the cross bar is fastened to a rear portion of the inner opening. A rear bracket constituting the support portion of the suspension arm front portion extends and joined to the inner side wall of the subframe, and
The vehicle front sub-frame structure according to claim 5, wherein the cross bar is fastened at a plurality of points across the rear bracket in the vehicle front-rear direction. Provide a sub-frame to support the A-type suspension arm,
The suspension arm front portion is inserted and supported in an outer opening formed in the vehicle width direction outer portion of the subframe,
An inner opening is formed on the inner side in the vehicle width direction of the subframe so as to face the outer opening,
A vehicle front sub-frame structure in which a part of the support portion of the front portion of the suspension arm projects from the inner opening to the front of the vehicle and inward in the vehicle width direction,
A cross bar that connects the left and right support parts in the vehicle width direction is provided,
A front bracket constituting the support portion of the suspension arm front portion is joined to a front portion of the outer opening,
A vehicle front sub-frame structure provided with a reinforcing member disposed across the front bracket and a front sub-frame.

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