JP2012081882A - Aluminum suspension member of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aluminum suspension member for a vehicle, which can suppress the lowering of rigidity caused by a notch for making an exhaust pipe pass therethrough.SOLUTION: In the aluminum suspension member 4 which is integrally formed of an aluminum alloy, has an almost horizontal upper wall 4A and a cross section shape which is opened downwardly by a front wall 4B and a rear wall 4C which extend downwardly from the front end edge and the rear end edge of the upper wall 4A, respectively, and in which the notch 16 for making the exhaust pipe 15 pass therethrough is formed at part of the lower end of the front wall 4B, the notch 16 is formed into an almost semi-circular shape, and a vertical reinforcement rib 17 along the peripheral edge of the notch 17 is formed at the front wall 4B in almost parallel therewith in front of a portion separated from the front wall 4B.

Description

  The present invention relates to an aluminum suspension member that is disposed below an engine room of a vehicle and supports left and right suspension arms in a swingable manner.

  The suspension member disposed below the engine room of the vehicle supports the left and right suspension arms so as to be swingable up and down, and has a pair of apron side members disposed along the vehicle front-rear direction on the left and right sides of the engine room. It is a member for connecting and increasing the rigidity of the vehicle body.

  By the way, when the exhaust pipe extending from the engine to the rear of the vehicle passes below the suspension member, the suspension member is bent upward in order to secure the minimum ground clearance of the vehicle, and the interference between the two is made through the exhaust pipe at the bent portion. To prevent.

  However, if the suspension member is bent upward as described above, the rigidity of the suspension member is lowered, and the rigidity of the entire vehicle body is also lowered, so that the running stability of the vehicle cannot be improved. For this reason, for example, Patent Document 1 proposes to increase the rigidity of the suspension member by installing reinforcing members between the left and right end portions of the suspension member made of sheet metal.

  On the other hand, for the purpose of weight reduction and productivity improvement, the suspension member is integrally formed by casting (die casting or the like) with a lightweight aluminum alloy (for example, see Patent Document 2).

JP-A-4-215567 Japanese Patent No. 3175523

  However, when a configuration in which a reinforcing member is installed between the left and right end portions of the suspension member as proposed in Patent Document 1, the number of parts and the number of assembling steps increases, resulting in an increase in cost.

  In addition, in an aluminum suspension member as described in Patent Document 2, the main body portion cannot have a closed cross-sectional structure, and therefore, a notch for avoiding interference with the exhaust pipe in a part of the main body portion. When this is formed, there is a problem that the rigidity is remarkably lowered by the notch. In order to solve this problem, a reinforcing member may be added as proposed in Patent Document 1, but the original purpose of using the aluminum suspension member is to reduce weight and improve productivity. Adding a reinforcing member that is a member is contrary to its purpose.

  The present invention has been made in view of the above problems, and an object thereof is to provide an aluminum suspension member for a vehicle capable of suppressing a reduction in rigidity due to a notch for passing an exhaust pipe.

In order to achieve the above object, an invention according to claim 1 is formed of an aluminum alloy and is formed by a substantially horizontal upper wall, and a front wall and a rear wall extending downward from front and rear edges of the upper wall, respectively. In an aluminum suspension member of a vehicle having a cross-sectional shape with an open bottom and a notch for allowing an exhaust pipe to pass through a part of the lower end of the front wall.
The notch has a substantially semicircular shape, and a reinforcing rib in the vertical direction along the peripheral edge of the notch is formed substantially parallel to the front wall in front of the notch.

  According to a second aspect of the present invention, in the first aspect of the present invention, an extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib is an upward rib extending upward from the front end of the extending portion. It is characterized by comprising.

  According to a third aspect of the present invention, in the first aspect of the present invention, an extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib is a downward rib extending downward from a front end of the extending portion. It is characterized by comprising.

  According to a fourth aspect of the present invention, in the first aspect of the present invention, an extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib extends upward and downward from the front end of the extending portion, respectively. It is composed of an upward rib and a downward rib, and the cross-sectional shape of the periphery of the notch is H-shaped by the reinforcing rib, the front wall, and the extending portion.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the notch is formed at a position displaced toward one end in the vehicle width direction, and the reinforcing rib is offset by the notch. It is characterized in that it is formed up to the end on the side where it is positioned.

  According to the first aspect of the present invention, since the notch formed on the front wall of the aluminum suspension member has a substantially semicircular shape, stress concentration at the periphery of the notch can be prevented. Also, since the reinforcing ribs in the vertical direction along the periphery of the notch are formed substantially parallel to the front wall, the rigidity of the periphery of the notch is enhanced by this reinforcing rib, and the notch for passing the exhaust pipe is made of an aluminum suspension member. It is possible to suppress a decrease in rigidity due to the formation of the vehicle and improve the running stability of the vehicle. Further, since the notch of the suspension member is provided above the exhaust pipe, it receives heat from the exhaust pipe. However, since the heat radiation area is increased by the reinforcing rib, overheating of the periphery of the notch is suppressed.

  According to the second aspect of the present invention, the rigidity of the notch is enhanced by the extending portion extending from the front wall of the aluminum suspension member to the reinforcing rib. Further, since the upward rib extends in the direction opposite to the exhaust pipe, the size of the upward rib can be set to be relatively large, and the rigidity of the peripheral edge of the notch can be effectively increased.

  According to the third aspect of the invention, the downward rib extending downward from the front end of the extending portion of the aluminum suspension member can be easily formed, and the structure of the forming die can be simplified. In addition, the extended portion can be arranged slightly above the lower end of the front wall, and a groove shape can be formed by the lower end portion of the front wall and the downward rib, and the rigidity of the peripheral edge of the notch can be more effectively achieved by this groove shape. Can be increased.

  According to the fourth aspect of the present invention, the height of the upward rib and the downward rib necessary for improving the rigidity of the peripheral edge of the notch can be kept low, and the mold for the suspension member can be simplified and molded. Make it easier. Even if the heights of the upward rib and the downward rib are kept low, the rigidity of the peripheral edge of the notch can be increased by the upward rib and the downward rib.

  According to the fifth aspect of the present invention, the reinforcing rib is formed up to the end on the side where the notch is displaced in the vehicle width direction, that is, the end with high rigidity that is in the vicinity of the attachment portion of the suspension member to the vehicle body. Further, the rigidity of the peripheral edge of the notch can be increased more effectively.

It is a side view which shows the vehicle body front part structure of a vehicle. It is a disassembled perspective view which shows the structure of the suspension system of a vehicle. It is a top view of a suspension member. It is a bottom view of a suspension member. It is a front view of a suspension member. It is the sectional view on the AA line of FIG. It is a left view of a suspension member. It is a disassembled perspective view which shows a suspension arm attachment structure. It is the perspective view which looked at the attaching part which shows the assembly point of a suspension arm from diagonally downward. It is a fragmentary sectional side view which shows a suspension arm attachment structure. It is a figure similar to FIG. 6 which shows another embodiment of this invention. It is a figure similar to FIG. 6 which shows another embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a side view showing a vehicle body front structure, FIG. 2 is an exploded perspective view showing the structure of a suspension system of the vehicle, FIG. 3 is a plan view of the suspension member, and FIG. 4 is a bottom view of the suspension member. 5 is a front view of the suspension member, FIG. 6 is a sectional view taken along line AA of FIG. 5, FIG. 7 is a left side view of the suspension member, and FIG. 8 is an exploded perspective view showing a suspension arm mounting structure according to the present invention. FIG. 9 is a perspective view of a mounting portion showing a procedure for assembling the suspension arm as viewed obliquely from below, and FIG. 10 is a partial sectional side view showing a suspension arm mounting structure.

  As shown in FIG. 1, a pair of left and right apron side members 1 (only one is shown in FIG. 1) are arranged in the engine room S in the front part of the vehicle along the vehicle front-rear direction (left-right direction in FIG. 1). A pair of left and right apron lower members 2 (only one is shown in FIG. 1) are disposed below the apron side members 1 along the vehicle front-rear direction. A radiator support lower member 3 arranged in the vehicle width direction (perpendicular to the plane of FIG. 1) is installed at the front ends of the pair of left and right apron lower members 2, and at the rear ends of the apron lower members 2 A suspension member 4 disposed in the lower part of the engine room S is connected.

  Each apron side member 1 is composed of front and rear first and second horizontal portions 1A, 1B and an inclined inclined portion 1C that connects both horizontal portions 1A, 1B. A crash box 5 that absorbs impact is attached. An upper bumper member 7 having a pair of upper and lower pipe members 6 extending in the vehicle width direction is connected to the front ends of the left and right crash boxes 5, and a bumper fascia 8 is provided in front of the upper bumper member 7 in the vehicle. It is arranged.

  Further, lamp support braces 9 extending vertically are respectively attached to the inner surfaces of the pair of left and right crash boxes 5 in the vehicle width direction, and a pair of upper and lower pipe members along the vehicle width direction are attached to the front ends of both lamp support braces 9. A lower bumper member 11 having 10 is connected, and a bumper fascia 12 is disposed in front of the lower bumper member 11 in the vehicle. Here, the bumper fascia 8 and the bumper fascia 12 are integrally formed with a radiator air intake port interposed therebetween.

  Next, the structure of the suspension member 4 will be described below with reference to FIGS.

  The suspension member 4 is a member integrally formed by casting with an aluminum alloy (die casting or the like), and extends substantially vertically downward from a substantially horizontal upper wall 4A and front and rear edges of the upper wall 4A. The front wall 4B and the rear wall 4C have a cross-sectional shape opened downward. Here, as shown in FIGS. 2 and 5, a rectangular through hole 14 is formed in the center of the front wall 4B of the suspension member 4 to allow the torque rod 13 (see FIG. 2) to pass therethrough. As described above, a semicircular cutout 16 is formed at the position of the front wall 4B displaced from the center in the vehicle width direction to the right side so that an exhaust pipe 15 extending from the engine (not shown) to the rear of the vehicle passes therethrough. Yes.

  Here, as shown in FIG. 6, in front of the front wall 4B, the reinforcing ribs 17 arranged along the periphery of the notch 16 and erected in the vertical direction are substantially parallel to the front wall 4B. Is formed. Specifically, an arcuate curved extending portion 4a extending from the front wall 4B to the reinforcing rib 17 is formed along the periphery of the notch 16 slightly above the lower end of the front wall 4B. The upper rib 17a and the lower rib 17b extend upward and downward from the front end of the extending portion 4a. And the cross-sectional shape of the periphery of the notch 16 is made into H shape by the reinforcing rib 17 comprised by the upward rib 17a and the downward rib 17b, the front wall 4B, and the extending part 4a in this way.

  Further, as described above (see FIG. 5), the notch 16 is formed at a position displaced from the center in the vehicle width direction of the front wall 4B of the suspension member 4 to the right side. However, the reinforcing rib 17 is notched. 16 is formed up to the right side (left side in FIG. 5) which is the side on which 16 is displaced (the highly rigid end near the support column 4b). Specifically, the right end portion (left side in FIG. 5) reaches a front mounting portion of a suspension arm 30 described later having relatively high rigidity. More specifically, the right end is connected to the boss 4g of the front mounting portion of the suspension arm 30. On the left side, which is the opposite side, screw holes are formed on both the left and right sides of the through hole 14 through which the torque rod 13 passes, and are formed up to a portion having a relatively high rigidity. The front end of the connecting plate for attaching the large-diameter bush at the rear end portion of the torque rod 13 to the suspension member 4 is fastened and fixed in the screw hole.

  On the other hand, on the front side of both left and right ends of the upper wall 4A of the suspension member 4 made of aluminum, a support column 4b constituting a vehicle body mounting portion is erected, and as shown in FIG. 3 and FIG. A circular hole-shaped bolt insertion hole 18 is provided in the vertical direction. In addition, mounting seats 4c (see FIG. 3) that also form vehicle body mounting portions are formed at the rear end corners of the left and right ends of the upper wall 4A of the suspension member 4. As shown in FIGS. Each mounting seat 4c is provided with a circular hole insertion hole 19 extending vertically.

  Thus, the suspension member 4 has a bolt 20 (see FIG. 2) inserted from below into the bolt insertion holes 18 formed in the left and right support columns 4b, and the first of the pair of left and right apron side members 1 shown in FIG. A pair of left and right apron side members 1 as shown in FIG. 1 are bolts 21 (see FIG. 2) which are tightened to the lower surface of the rear end of the horizontal portion 1A and inserted from below into a bolt insertion hole 19 formed in the mounting seat 4c. It is attached to the left and right apron side members 1 by tightening to the rear end of the slope portion 1C.

  Meanwhile, the stabilizer 22 and the steering gear box 23 shown in FIG. 2 are attached to the upper part of the suspension member 4, but the stabilizer 22 is provided on the left and right sides of the upper wall 4A of the suspension member 4 as shown in FIGS. Mounting seats 4d for mounting are formed, and mounting seats 4e and 4f for mounting the steering gear box 23 are formed on the left and right in front of these vehicles. Two screw holes 24 are formed in each mounting seat 4d, two screw holes 25 are formed in the mounting seat 4e, and one screw hole 25 is formed in each mounting seat 4f.

  Thus, as shown in FIG. 2, the stabilizer 22 is configured by screwing the two bolts 27 inserted through the holding member 26 into the screw holes 24 of the mounting seat 4 d formed on the upper wall 4 </ b> A of the suspension member 4. The left and right portions are attached to the upper wall 4A of the suspension member 4 along the vehicle width direction. In the steering gear box 23, two bolts 28 are screwed into the screw holes 25 of the mounting seat 4e of the suspension member 4, and two bolts 29 are mounted on the mounting wall 4f formed on the upper wall 4A of the suspension member 4. The left and right portions are attached to the upper surface of the upper wall 4A of the suspension member 4 along the vehicle width direction.

  Also, as shown in FIGS. 2, 8, and 9, front and rear of the inner end of a pair of left and right suspension arms 30 (only one is shown in the figure) having a Y-shape in plan view at the left and right ends of the suspension member 4. Is attached so that it can swing up and down. The outer end portions of the left and right suspension arms 30 are pivotally attached to a front wheel knuckle (not shown) via ball joints 31, and the left and right front wheels (not shown) are respectively attached to the front wheel knuckles. End portions of tie rods 32 that are rotatably supported and extend from the steering gear box 23 to the left and right are connected via a ball joint 33.

  Here, the attachment structure of the suspension arm 30 will be described.

  As shown in FIGS. 4 and 7 to 10, two front and rear bosses 4 g are integrally formed on each front portion of the left and right ends of the suspension member 4, and the lower surface of each boss 4 g is flat and downward. The mounting surface 4g-1 is configured. Each boss 4g has a screw hole 34 extending vertically. And as shown in FIG. 10, the recessed part 35 is formed between the attachment surfaces 4g-1 formed in the front and back at each front part of the left and right ends of the suspension member 4, and the attachment surface A rib 4h extending vertically with respect to 4g-1 is erected in a state of approaching one boss 4g. The rib 4h is erected so that the tip thereof is closer to the shaft 38A of the bush 38 than the outer cylinder 38B of the bush 38 to be described later, and the tip of the rib 4h is attached to the outer cylinder 38B with the bush 38 attached. It arrange | positions to the side (side of the axial direction of the bush 38). Here, as shown in FIGS. 4 and 7, the left and right attachment surfaces 4g-1 of the suspension member 4 are formed in the vicinity of the left and right support columns 4b, which are attachment portions of the suspension member 4 to the vehicle body. . Specifically, the boss 4g formed on the rear side is formed immediately below the support column 4b, and the screw hole 34 formed in the boss 4g has an upper opening disposed in the support column 4b.

  Further, as shown in FIGS. 7 to 9, flat rectangular cylindrical mounting portions 4D are formed at the rear portions of the left and right ends of the suspension member 4, respectively. As shown in FIG. A circular bolt insertion hole 36 is formed on the bottom surface of 4D, and a cylindrical boss 4i is erected integrally on the top surface. Each boss 4i has a screw hole 37 extending vertically.

  On the other hand, as shown in FIG. 8, a cylindrical boss 30a that opens in the vehicle front-rear direction is integrally formed on the front side of the inner end of the left and right suspension arms 30 (only one is shown in FIG. 8). A bush 38 is pressed into the boss 30a in the vehicle front-rear direction. Here, as shown in FIG. 10, the bush 38 includes a shaft 38A and an outer cylinder 38B fixed to the suspension member 4, and an elastic member 38C such as rubber filled between the shaft 38A and the outer cylinder 38B. Flat fastening and fixing portions 38a are formed at both ends of the shaft 38A protruding from the outer cylinder 38B. A circular bolt insertion hole 39 is formed in each tightening fixing portion 38a of the shaft 38A.

  A circular fitting hole 4j is formed on the rear side of each suspension arm 30 in the vehicle width direction, and a bush 40 is press-fitted in the fitting hole 4j in the vertical direction. Although not shown, the bush 40 is configured by filling an elastic member such as rubber between an inner cylinder and an outer cylinder of an inner / outer double cylinder shape.

  Thus, each suspension arm 30 is attached to the suspension member 4 so as to be swingable up and down in the following manner.

  That is, as shown in FIGS. 8 and 9, a boss 30a formed on the front side of the vehicle width direction inner end portion of each suspension arm 30 and a bush 38 press-fitted into the boss 30a are attached to two front and rear mounting surfaces 4g of the suspension member 4. (In detail, the outer cylinder 38B of the bush 38 is disposed between one boss 4g and the rib 4h), and the flat formed on both ends of the shaft 38A of the bush 38. The fastening member 38a is pressed against the front and rear mounting surfaces 4g-1 of the suspension member 4 from below, and the bolt 41 inserted from below into the bolt insertion hole 39 formed in the fastening member 38a is attached to the suspension member 4. By screwing into the screw hole 34 formed in the surface 4g-1, the front side of the vehicle width direction inner end portion of each suspension arm 30 is centered on the shaft 38A of the bush 38. Swingably attached to the lower.

  Further, the bush 40 press-fitted into the fitting hole 4j formed on the rear side in the vehicle width direction inner end portion of each suspension arm 30 is inserted into the rectangular cylindrical mounting portion 4D formed in the suspension member 4. The bolt 42 inserted from below into the bolt insertion hole 36 formed on the bottom surface of the mounting portion 4D is passed through the inner cylinder of the bush 40, and the tip of the bolt 42 is erected on the upper surface of the mounting portion 4D of the suspension member 4. By screwing into the screw hole 37 of the boss 4i, the rear side of the inner end portion in the vehicle width direction of each suspension arm 30 is attached so as to be able to swing up and down by elastic deformation of the elastic member of the bush 40.

  As described above, in the present embodiment, the exhaust pipe 15 is disposed so as to pass below the suspension member 4, and the notch 16 through which the exhaust pipe 15 passes is formed in the front wall 4B of the aluminum suspension member 4. Since the shape is substantially semicircular, stress concentration at the periphery of the notch 16 can be prevented.

  Further, since the vertical reinforcing ribs 17 along the peripheral edge of the notches 16 are formed substantially parallel to the front wall 4B, the reinforcing ribs 17 and the extending portions 4a extending from the front walls 4B to the reinforcing ribs 17 are used. The rigidity of the peripheral edge is increased, and a decrease in rigidity due to the formation of the notch 16 for passing the exhaust pipe 15 in the aluminum suspension member 4 can be suppressed, and the running stability of the vehicle can be improved. In the present embodiment, the reinforcing rib 17 has a high rigidity in the vicinity of the right end where the notch 16 is displaced in the vehicle width direction, that is, in the vicinity of the column 4b that is the attachment portion of the suspension member 4 to the vehicle body. Since it formed to the edge part, the rigidity of the periphery of the notch 16 is improved more effectively.

  In particular, in the present embodiment, the arcuate curved extending portion 4a extending from the front wall 4B of the suspension member 4 to the reinforcing rib 17 is formed slightly above the lower end of the front wall, and the reinforcing rib 17 extends. The upper rib 17a and the lower rib 17b extend upward and downward from the front end of the portion 4a, respectively, and the reinforcing rib 17, the front wall 4B, and the extending portion 4a make the sectional shape of the periphery of the notch 16 H-shaped. Therefore, the heights of the upward ribs 17a and the downward ribs 17b necessary for improving the rigidity of the peripheral edge of the notch 16 can be kept low, and the molding die of the suspension member 4 is simplified and the molding is facilitated. . And even if the height of the upward rib 17a and the downward rib 17b is suppressed low, the rigidity of the periphery of the notch 16 can be increased by the upward rib 17a and the downward rib 17b.

  Further, the notch 16 of the suspension member 4 is provided above the exhaust pipe 15 and therefore receives heat from the exhaust pipe 15. However, since the heat radiation area is increased by the reinforcing rib 17, overheating of the periphery of the notch 16 is suppressed. .

  By the way, in the above embodiment, the suspension member 4 is formed with the extended portion 4a extending from the front wall 4B to the reinforcing rib 17, and the upward rib 17a and the downward direction extending downward and upward from the front end of the extended portion 4a, respectively. Although the reinforcing rib 17 is constituted by the rib 17b, the reinforcing rib 17 may be constituted by an upward rib 17a extending upward from the front end of the extending portion 3a as shown in FIG. According to such a configuration, since the upward rib 17a extends in the direction opposite to the exhaust pipe 15, the size of the upward rib 17a can be set relatively large, and the rigidity of the periphery of the notch 16 can be effectively increased.

  Alternatively, as shown in FIG. 12, the reinforcing rib 17 may be formed by a downward rib 17b extending downward from the front end of the extending portion 4a. According to such a configuration, the reinforcing rib 17 is formed downward from the front end of the extending portion 4a. The forming of the extending downward rib 17b is facilitated, and the configuration of the mold can be simplified. Further, the extended portion 4a can be disposed slightly above the lower end of the front wall 4B, and a groove shape can be formed by the lower end portion of the front wall 4B and the downward rib 17b. Can be increased more effectively.

  Furthermore, the suspension arm 4 can be assembled with good workability by fastening the fastening portion 38a formed on the shaft 38A of the bush 38 to the mounting surface 4g-1 of the suspension member 4 from below. Adequacy is improved.

  Further, in this embodiment, the mounting surface 4g-1 of the suspension member 4 is formed in the vicinity of the column 4b, which is the mounting portion of the suspension member 4 to the vehicle body having high rigidity, so that the mounting rigidity of the suspension arm 30 is further increased. It is done.

  Furthermore, in the present embodiment, ribs 4h extending in a direction perpendicular to the mounting surface 4g-1 are provided in the recesses 35 between the two front and rear mounting surfaces 4g-1 formed in front of the left and right ends of the suspension member 4. Therefore, the end surface of the outer cylinder 38B of the bush 38 abuts against the rib 4h, and the axial movement of the outer cylinder 38B is restricted. As described above, the rib 4h functions as a stopper for restricting the movement of the outer cylinder 38B of the bush 38, so that the movable range of the bush 38 can be regulated with a simple configuration to achieve the desired movement of the suspension arm 30. . Further, the recess 35 and the rib 4h can be easily formed simultaneously with the forming die when the aluminum suspension member 4 is formed.

DESCRIPTION OF SYMBOLS 1 Apron side member 4 Aluminum suspension member 4A Upper wall of suspension member 4B Front wall of suspension member 4C Rear wall of suspension member 4a Suspension member extension part 4b Suspension member support (attachment part)
4g Suspension member boss 4g-1 Suspension member mounting surface 4h Suspension member rib 15 Exhaust pipe 16 Notch 17 Reinforcement rib 17a Upward rib 17b Downward rib 30 Suspension arm 35 Suspension member recess 38 Bush 38A Bush shaft 38B Bushing Outer cylinder 38C Bushing elastic member 38a Bushing fastening part S Engine room

Claims (5)

The upper wall is formed of an aluminum alloy and has a substantially horizontal upper wall, a front wall extending downward from the front edge and the rear edge of the upper wall, and a cross-sectional shape opened downward by the rear wall. In the aluminum suspension member of the vehicle in which a notch for allowing the exhaust pipe to pass through a part of the lower end is formed,
An aluminum suspension for a vehicle characterized in that the notch has a substantially semicircular shape, and vertical reinforcing ribs along the periphery of the notch are formed substantially parallel to the front wall in front of the notch. member.   2. The vehicle-made aluminum according to claim 1, wherein an extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib is configured as an upward rib extending upward from a front end of the extending portion. Suspension member.   2. The vehicle-made aluminum according to claim 1, wherein an extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib is configured as a downward rib extending downward from a front end of the extending portion. Suspension member.   An extending portion extending from the front wall to the reinforcing rib is formed, and the reinforcing rib is constituted by an upward rib and a downward rib extending upward and downward from the front end of the extending portion, respectively, and the reinforcing rib and the front wall The aluminum suspension member for a vehicle according to claim 1, wherein a cross-sectional shape of a peripheral edge of the notch is H-shaped by the extending portion. The said notch is formed in the position displaced in the vehicle width direction one end side, and the said reinforcing rib was formed to the edge part on the side in which the said notch was displaced, The any one of Claims 1-4 characterized by the above-mentioned. An aluminum suspension member for a vehicle as described in 1.

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