JP2012061921A - Torque rod mounting structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torque rod mounting structure of a vehicle, capable of improving mounting workability of the torque rod to a suspension member, and capable of enhancing a discharge property for foreign matter such as mud and snow intruded in the suspension member.SOLUTION: As a mounting structure of a torque rod 13 for connecting an aluminum-made suspension member 4 having a sectional form with its lower part opened and an engine, a configuration is employed in which a suspension member side end (rear end) of the torque rod 13 is arranged in the suspension member 4, and the suspension member side end of the torque rod 13 is fixed by fastening a bolt 50 to be passed through a busing 44 provided thereon from its lower part to a screw hole 45 of an upper wall 4A of the suspension member 4.

Description

  The present invention relates to a torque rod mounting structure for connecting an engine and an aluminum suspension member in order to suppress swinging of the engine in a vehicle.

  The engine, which is a drive source arranged in the engine room in the front part of the vehicle, is elastically supported by the vehicle body by a plurality of engine mounts, but the engine tends to swing due to torque fluctuations, rotation fluctuations, etc. accompanying throttle operation, etc. In order to oscillate with respect to the vehicle body by the amount of elastic deformation of the engine mount arranged so as not to transmit vibration to the vehicle body, the engine and suspension arm are connected by a connecting rod to suppress the engine oscillation. Yes.

  By the way, the suspension member to which one end of the torque rod is connected is disposed below the engine room of the vehicle, supports the left and right suspension arms so as to be able to swing up and down, and extends along the vehicle longitudinal direction on both the left and right sides of the engine room. This is a member for connecting a pair of apron side members arranged in order to increase the rigidity of the vehicle body.

  Conventionally, the suspension member is configured by welding a press-formed product of a sheet metal (for example, see Patent Documents 1 and 2). An example of the mounting structure of the torque rod in such a sheet metal suspension member is shown in FIG.

  That is, FIG. 13 is a side sectional view showing a conventional torque rod mounting structure. The illustrated sheet metal suspension member 104 is formed into a hollow shape by upper and lower plate members 104A and 104B which are press-formed. An opening 105 is formed in the front surface of the sheet metal suspension member 104, and a torque rod 113 is passed through the opening 105 from the front of the vehicle (left side in FIG. 13), and the rear end portion of the suspension member 104. Placed inside. Here, cylindrical bosses 113A and 113B are respectively attached to the front end and the rear end of the torque rod 113, and bushes 143 and 144 are press-fitted into the respective cylindrical bosses 113A and 113B.

  Thus, the cylindrical boss 113B bonded to the rear end disposed in the suspension member 104 of the torque rod 113 is connected to the bolt insertion hole 148 and the bush 144 formed in the lower plate member 104B of the suspension member 104. A bolt 150 is passed from below through a bolt insertion hole 145 formed in the inner cylinder 144A and the upper plate member 104A, and a nut 151 that is screwed into a screw portion protruding above the upper plate member 104A of the bolt 150 is tightened. To the suspension member 104.

  Incidentally, in recent years, for the purpose of reducing the weight and improving the productivity, the suspension member is integrally formed by casting (die casting or the like) with a lightweight aluminum alloy. Such an aluminum suspension member is integrally formed into a substantially horizontal upper wall and a cross-sectional shape in which the lower part is opened by a front wall and a rear wall extending downward from the front end edge and the rear end edge of the upper wall, respectively.

JP 2007-253642 A JP 2010-066463 A

  However, in the mounting structure of the torque rod 113 to the sheet metal suspension member 104 shown in FIG. 13, the sheet metal suspension member 104 has a hollow closed cross-sectional structure. The position of the bush 144 cannot be visually recognized from the outside, and the alignment between the inner cylinder 144A of the bush 144 and the bolt insertion holes 145 and 148 formed in the upper and lower plate members 104A and 104B of the suspension member 104 is easy. However, there was a problem that mounting workability and work efficiency were poor.

  Also, if mud, stones, snow, rainwater, etc. enter the interior of the suspension member 104 having a hollow closed cross-sectional structure from the opening 105 or the like, they are not easily discharged to the outside, and the function of the torque rod 113 is achieved. There is also a problem that anti-corrosion measures are necessary because the suspension member 104 may be hindered or rusted.

  The present invention has been made in view of the above-mentioned problems, and the purpose of the invention is to improve the workability of attaching the torque rod to the suspension member and to enhance the ability to remove foreign matters such as mud and snow that have entered the suspension member. An object of the present invention is to provide a torque rod mounting structure for a vehicle.

In order to achieve the above object, the invention according to claim 1
An aluminum suspension member integrally formed of an aluminum alloy and having a substantially horizontal upper wall, and a cross-sectional shape having a lower portion opened by a front wall and a rear wall extending downward from front and rear edges of the upper wall;
An engine disposed in front of the aluminum suspension member;
A torque rod connecting the engine and the suspension member;
A torque rod mounting structure for connecting the engine side end portion and the suspension member side end portion of the torque rod to the engine and the suspension member via elastic bushes, respectively.
The suspension rod side end of the torque rod is disposed below the upper wall of the suspension member and behind the front wall, and the suspension rod side end of the torque rod is inserted from below into the bush provided on the torque rod. A structure is adopted in which the bolt to be fixed is fixed to the upper wall of the suspension member by fastening.

  The invention according to claim 2 is the invention according to claim 1, wherein a through hole through which the torque rod passes is formed in a front wall of the suspension member.

  According to the first aspect of the present invention, since the aluminum suspension member has a cross-sectional shape with the lower part opened, the suspension member of the torque rod (in the suspension member below the upper wall and behind the front wall) The bush provided at the end portion disposed in the space portion can be directly viewed from below, and the inner cylinder of the bush and the mounting portion such as the screw hole formed in the upper wall of the suspension member can be manufactured. Accurate positioning is possible. For this reason, a bolt inserted into the inner cylinder of the bush from below can be simply screwed into a mounting portion such as a screw hole formed in the upper wall of the suspension member, and the end of the torque rod can be fastened and fixed via the bush. This improves the workability of attaching the torque rod to the suspension member.

  In addition, since the torque rod is attached to the suspension member that is open at the bottom, there is no need to pull the part forward from the bag-like attachment part like a suspension member made of sheet metal having a hollow cross-sectional structure, and there is no interference with the engine. Eliminating workability of parts is eliminated.

  Furthermore, there is no shape that holds foreign matter such as mud and snow around the bushing at the end located in the suspension member of the torque rod, so that the suspension member made of sheet metal having a hollow closed cross-sectional structure Problems due to the entry of foreign matter do not occur, and parts such as a cover for preventing the entry of foreign matter are not required, so that the number of parts can be reduced and the cost can be reduced.

  According to the invention described in claim 2, since the through hole through which the torque rod passes is formed in the front wall of the suspension member, the front wall can be set larger than the case where the notch is formed in the front wall. The rigidity of the member is increased, and the swing of the engine is effectively suppressed by the torque rod having one end attached to the suspension member having high rigidity.

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 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 perspective view which shows the assembly direction to the suspension member of a torque rod. It is a disassembled perspective view which shows the torque rod mounting structure which concerns on this invention. It is a sectional side view which shows the torque rod mounting structure which concerns on this invention. It is a sectional side view which shows the conventional torque rod mounting structure.

  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 left side view of the suspension member, FIG. 7 is an exploded perspective view showing the suspension arm mounting structure, and FIG. FIG. 9 is a partial side cross-sectional view showing the suspension arm mounting structure, FIG. 10 is a perspective view showing the direction in which the torque rod is assembled into the suspension member, and FIG. 11 shows the torque rod mounting structure according to the present invention. FIG. 12 is a side sectional view showing the torque rod 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 the apron side member 2 has a rear end at the rear end. 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 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 through which the torque rod 13 (see FIG. 2) passes is formed in the center of the front wall 4 </ b> B of the suspension member 4 in the vehicle width direction. Near the right side of the wall 4B, a semicircular cutout 16 is formed through which an exhaust pipe 15 extending from an unillustrated engine to the rear of the vehicle passes. A reinforcing rib 17 is integrally formed on the periphery of the notch 16 of the suspension member 4.

  In addition, 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 that constitutes a vehicle body mounting portion is provided upright, and as shown in FIGS. 3 and 4, at the upper end portion of each support column 4b. A circular hole-shaped bolt insertion hole 18 is provided in the vertical direction. Also, mounting seats 4c (see FIG. 3) constituting the 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, and each mounting seat 4c has a circular hole shape. Bolt insertion holes 19 are respectively provided in the vertical direction.

  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 1, 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 and 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 of the front of the vehicle. Each mounting seat 4d, 4d is formed with two screw holes 24, and each mounting seat 4e, 4f is formed with two screw holes 25, respectively.

  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.

  As shown in FIGS. 2, 7, and 8, the left and right ends of the suspension member 4 are front and rear of the inner end of a pair of left and right suspension arms 30 (only one is shown in the figure) that are Y-shaped in plan view. 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. 6 to 9, two front and rear bosses 4g are integrally formed on each front portion of the left and right end portions of the suspension member 4, and the bottom surface of each boss 4g is a flat downward mounting surface 4g. -1. Each boss 4g has a screw hole 34 extending vertically. As shown in FIG. 9, a recess 35 is formed between the front and rear mounting surfaces 4 g-1 at the front left and right ends of the suspension member 4. Ribs 4h extending in a direction perpendicular to 4g-1 are provided. Here, as shown in FIGS. 4 and 6, the left and right attachment surfaces 4 g-1 of the suspension member 4 are formed in the vicinity of the left and right support columns 4 b that are attachment portions of the suspension member 4 to the vehicle body. .

  Further, as shown in FIGS. 6 to 8, 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. 7, 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. 7). A bush 38 is press-fitted in the lateral direction into the boss 30a. Here, as shown in FIG. 9, 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 30b is formed on the rear side of the vehicle width direction inner end portion of each suspension arm 30, and a bush 40 is press-fitted in the fitting hole 30b 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 like the bush 38.

  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 in the vehicle width direction inner end portion of each suspension arm 30 and a bush 38 press-fitted into the boss 30a are arranged between the two front and rear mounting surfaces 4g-1. The flat fastening fixing portions 38a formed at both ends of the shaft 38A of the bush 38 are pressed into the front and rear mounting surfaces 4g-1 of the suspension member 4 from below to fit into the formed concave portions 35, and the fastening fixing portions 38a. The bolt 41 inserted from below into the bolt insertion hole 39 formed in the screw is screwed into the screw hole 34 formed in the mounting surface 4g-1 of the suspension member 4, so that the front end in the vehicle width direction of each suspension arm 30 is The side is attached so as to be swingable up and down around the shaft 38A of the bush 38.

  Further, the bush 40 press-fitted into the fitting hole 30b formed on the rear side of the inner end portion in the vehicle width direction of each suspension arm 30 is inserted into the rectangular cylindrical mounting portion 4D formed in the suspension member 4. A bolt 42 inserted from below into a 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 a screw of a boss 4i erected on the upper surface of the mounting portion 4D. By screwing into the hole 37, the rear side of the vehicle width direction inner end portion 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.

  Next, a structure for attaching the torque rod 13 to the suspension member 4 will be described with reference to FIGS.

  The torque rod 13 is a member arranged along the front-rear direction at the center in the vehicle width direction, and suppresses engine swing by connecting the suspension member 4 and an engine (not shown) arranged in front of the suspension member 4. The front end is attached to the engine, and the rear end is attached to the suspension member 4. More specifically, the torque rod 13 is formed by binding a small-diameter cylindrical boss 13B to the front end of a round pipe-shaped rod main body 13A in the direction of opening in the vehicle width direction, and at the rear end of the rod main body 13A than the cylindrical boss 13B. A large-diameter cylindrical boss 13C is connected in a direction to open in the vertical direction, and a bush 43 is press-fitted into the small-diameter cylindrical boss 13B at the front end, and the large-diameter cylindrical boss 13C at the rear end. The bush 44 is press-fitted.

  Although not shown, the bush 43 pressed into the small-diameter cylindrical boss 13B at the front end of the torque rod 13 is configured by filling an elastic body between the inner cylinder and the outer cylinder arranged concentrically, and the rear end. As shown in FIG. 12, the bush 44 press-fitted into the large-diameter side cylindrical boss 13C connects the inner cylinder 44A and the outer cylinder 44B concentrically connected by a V-shaped elastic member 44C in plan view. Configured.

  Thus, as shown in FIG. 10, the torque rod 13 is inserted into the through hole 14 formed in the front wall 4 </ b> B of the suspension member 4 with the front end side to which the small-diameter cylindrical boss 13 </ b> B is bound first. The cylindrical boss 13C on the large diameter side at the rear end thereof is disposed inside the suspension member 4 (the space portion of the suspension member 4 below the upper wall and behind the front wall). Here, as shown in FIG. 12, a boss 4j is erected upward at the front of the center of the upper wall 4A of the suspension member 4 in the vehicle width direction, and penetrates vertically through the boss 4j. A screw hole 45 is formed. The boss 4j is formed at a position between the left and right mounting seats 4d and 4d for mounting the stabilizer 22, and is formed slightly rearward between the mounting seats 4e and 4f for mounting the steering gear box 23. That is, the upper wall near the boss 4j is reinforced by the stabilizer 22 and the steering gear box 23. Reinforcing beads extending in the left-right direction of the vehicle are formed before and after the boss 4j.

  As shown in FIGS. 10 and 11, lower end mounting surfaces in which screw holes 46 are formed in the vertical direction are formed on the left and right sides of the through hole 14 at the lower end portion of the front wall 4 </ b> B of the suspension member 4. The lower end mounting surface is substantially the same height as the lower end of the inner cylinder 44 </ b> A of the bush 44. The through hole 14 is formed in such a size that the small-diameter side cylindrical boss 13B into which the bush 43 is press-fitted can pass but the large-diameter side cylindrical boss 13C into which the bush 44 is press-fitted cannot pass. The reduction in the strength of the front wall 4B is minimized. Further, bosses with screw holes 46 formed on the left and right sides of the through hole 14 are arranged in the vertical direction to reinforce the periphery of the through hole 14, and the strength of the front wall 4 </ b> B due to the formation of the through hole 14. As much as possible, the decline is reduced.

  By the way, the front end portion of the torque rod 13 is attached to the lower portion of the engine by a bolt (not shown) that is inserted in the inner cylinder of the bush 43 press-fitted into the cylindrical boss 13B at the front end. Further, a connecting plate 47 shown in FIGS. 11 and 12 may be used for attaching the rear end portion of the torque rod 13 to the suspension member 4.

  The connecting plate 47 is formed in a substantially triangular shape in plan view with the front end side (the front wall 4B side of the suspension member 4) being wide, and has two width direction end portions on the front end side and the rear end (the apex portion of the triangle). A circular bolt insertion hole 48 is provided in a vertical direction at a total of three locations. Here, a flange 47a bent downward is formed on the peripheral edge of the connection plate 47, whereby the rigidity of the connection plate 47 is enhanced. In addition, the central portion of the connecting plate 47 is formed with a recess 47b that is one step lower than the mounting surface, thereby increasing the rigidity of the connecting plate 47, and a triangular hole 47c is formed in the recess 47b. . By forming the triangular hole 47c in the central portion of the connecting plate 47 in this way, the connecting plate 47 can be reduced in weight, and mud and foreign matters can be prevented from accumulating on the connecting plate 47 and staying in water. .

  Thus, as shown in FIG. 12, the cylindrical boss 13C bonded to the rear end portion of the torque rod 13 is formed by a screw in which the inner cylinder 44A of the bush 44 is formed on the boss 4ji of the upper wall 4A of the suspension member 4. Positioned to coincide with hole 45. In this case, since the bush 44 can be directly viewed from below, the inner cylinder 44A of the bush 44 can be easily and accurately positioned in the screw hole 45 formed in the upper wall 4A of the suspension member 4. Then, the mounting surface of the connecting plate 47 is overlapped with the lower end mounting surface of the front wall 4B of the suspension member 4 from below, and bolt insertion holes formed at two left and right positions on the front end side of the connecting plate 47 as shown in FIG. Bolts 49 are passed through 48 from below, and these bolts 49 are screwed into screw holes 46 formed in the vertical direction at two locations on the left and right sides of the lower end mounting surface of the front wall 4B of the suspension member 4, respectively. The side portion is fastened and fixed to the lower end mounting surface of the front wall 4B of the suspension member 4.

  When the front end side portion of the connecting plate 47 is attached to the lower end mounting surface of the front wall 4B of the suspension member 4 as described above, the connecting plate 47 is formed at one place at the rear end of the connecting plate 47 as shown in FIG. The bolt insertion hole 48 coincides with the inner cylinder 44 A of the bush 44, and the bolt 50 is passed from below through the bolt insertion hole 48 of the connecting plate 47 and the inner cylinder 44 A of the bush 44, and the upper end thread portion of the bolt 50 is connected to the suspension member 4. By screwing into the screw hole 45 of the boss 4j erected on the upper wall 4A, the rear end portion of the torque rod 13 is fastened and fixed to the lower surface of the upper wall of the suspension member 4 via the bush 44. When the rear end portion of the torque rod 13 is attached to the suspension member 4 by fastening together with the connecting plate 47 with the bolt 50 in this way, the upper and lower ends of the bolt 50 are both supported by the upper wall 4A of the suspension member 4 and the connecting plate 47. Supported by That is, since the lower end (head) of the bolt 50 and the front wall 4B of the suspension member 4 are connected by the connecting plate 47, the bolt 50 is attached to the suspension member 4 in a both-sided state, and the fall of the bolt 50 is suppressed. To be supported reliably.

  As described above, in the present embodiment, the aluminum suspension member 4 has a cross-sectional shape with an open bottom, so that it is provided at the rear end portion of the torque rod 13 disposed in the suspension member 4. The bush 44 can be directly seen from below, and the inner cylinder 44A of the bush 44 and the mounting portion such as the screw hole 45 formed in the upper wall 4A of the suspension member 4 can be accurately positioned with good workability. . Therefore, the bolt 50 inserted through the inner cylinder 44A of the bush 44 from below is simply screwed into a mounting portion such as a screw hole 45 formed in the upper wall 4A of the suspension member 4, and the end of the torque rod 13 is attached to the bush 44. Thus, the workability of attaching the torque rod 13 to the suspension member 4 can be improved.

  In addition, since the torque rod 13 is attached to the suspension member 4 whose lower part is opened, it is not necessary to remove the part from the bag-like attachment part like a sheet metal suspension member having a hollow cross-sectional structure. Is increased.

  Further, since there is no shape that holds foreign matter such as mud and snow around the bush 44 at the rear end portion disposed in the suspension member 4 of the torque rod 13, a sheet metal suspension having a hollow closed cross-sectional structure is provided. There is no problem caused by the entry of foreign matter like members, and parts such as a cover for preventing the entry of foreign matter are not required, and the number of parts can be reduced and the cost can be reduced.

  In this embodiment, since the through hole 14 through which the torque rod 13 passes is formed in the front wall 4B of the suspension member 4, the front wall 4B is set larger than the case where the notch is formed in the front wall 4B. The lower end of the front wall 4B can be disposed below the lower end of the inner cylinder 44A of the bush 44, the rigidity of the suspension member 4 is increased, and one end of the torque rod is attached to the suspension member 4 having higher rigidity. The effect that the swing of the engine is effectively suppressed by 13 is obtained.

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 4g Suspension Member Boss 13 Torque Rod 14 Through Hole 43, 44 Bush 45 Suspension Member Screw Hole 47 Connection Plate 48 Connecting plate bolt insertion hole 49, 50 bolt

Claims (2)

An aluminum suspension member integrally formed of an aluminum alloy and having a substantially horizontal upper wall, and a cross-sectional shape having a lower portion opened by a front wall and a rear wall extending downward from front and rear edges of the upper wall;
An engine disposed in front of the aluminum suspension member;
A torque rod connecting the engine and the suspension member;
A torque rod mounting structure for connecting an engine side end portion and a suspension member side end portion of the torque rod to the engine and the suspension member via elastic bushes, respectively.
The suspension rod side end of the torque rod is disposed below the upper wall of the suspension member and behind the front wall, and the suspension rod side end of the torque rod is inserted from below into the bush provided on the torque rod. A bolt mounting structure for a vehicle, wherein the bolt is fixed to the upper wall of the suspension member by tightening the bolt. 2. The torque rod mounting structure for a vehicle according to claim 1, wherein a through hole through which the torque rod passes is formed in a front wall of the suspension member.

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