JP2012061919A - Torque rod arrangement structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a torque rod arrangement structure of a vehicle capable of suppressing reduction of rigidity of a suspension member and preventing cost increase due to increase of the number of components and assembling man-hours.SOLUTION: As an arrangement structure of a torque rod 13 in which a front end and a rear end are connected to an engine and an aluminum-made suspension member 4, respectively via a small-diameter bushing 43 provided at a front end and a large-diameter bushing provided at a rear end, the torque rod 13 with its front end at the head is passed through a through-hole 14 formed in a front wall 4B of the suspension member 4 from the rear of the vehicle, and the rear end arranged in the suspension member 4 of the torque rod 13 is fastened and fixed on an upper wall of the suspension member 4 by a bolt passed through the large-diameter bushing 44 from the lower side.

Description

  The present invention relates to an arrangement structure of a torque rod 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. The engine mount that is arranged so as not to transmit vibration to the vehicle body is swung relative to the vehicle body by the amount of elastic deformation. Therefore, the engine and the suspension member are connected by a torque rod to suppress the vibration of the engine. 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 formed by welding a press-formed product of sheet metal, and a structure for attaching a torque rod to the suspension member has been proposed in, for example, Patent Document 1. That is, in Patent Document 1, an opening is formed between upper and lower plate members of a suspension member made of sheet metal formed in a hollow shape by upper and lower plate members, a reinforcing body is provided in the vicinity of the opening, and a torque rod is provided. There has been proposed an attachment structure in which one end of a (connector) is fitted into an opening and connected to a reinforcing body via a bush. According to this mounting structure, since both ends of the bolt for fixing the inner cylinder of the bush are supported in a supported state by the upper and lower plate members of the suspension member, the mounting rigidity of the torque rod to the suspension member is kept high.

  By the way, in recent years, 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. 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

  As shown in FIG. 14, the torque rod 113 includes a bush 143 having elasticity at the front end and a bush (not shown) having elasticity at the rear end. Usually, the bush 143 on the front end side has a small diameter and a high spring constant, and the bush (not shown) on the rear end side has a large diameter and a low spring constant.

  Thus, the front end of the torque rod 113 is attached to the engine (not shown) via the bush 143, and the rear end is attached to the suspension member 104 via the bush (not shown). The attachment to was done as follows.

  That is, as shown in FIG. 14, a rectangular opening 114 is formed in the front wall 104B of the suspension member 104, and the torque rod 113 is opened from the front of the vehicle with the large-diameter bush on the rear end first. And the rear end portion of the torque rod 113 is attached to the suspension member 104 by tightening a bush arranged in the suspension member 104 with a bolt (not shown) to the suspension member 104. . For this reason, it is necessary to form an opening 114 large enough to allow the passage of a large-diameter bush on the front wall 104B of the suspension member 104. After the torque rod 113 is attached, the opening as shown in FIG. A large gap is formed between 14 and the torque rod 113.

  However, if the large opening 114 is formed in the front wall 104B of the suspension member 104 as described above, the rigidity of the suspension member 104 is reduced, and mud, stones, snow, rainwater, etc. enter the suspension member 104 from the opening 114. However, there is a possibility that these are not easily discharged from the inside of the suspension member 104 and the function of the torque rod 113 is obstructed, and a large gap formed in the through hole 114 (see FIG. 15). It is necessary to separately add a cover 151 for closing (see FIG. 14), and there is a problem in that the number of parts and the number of assembling steps increase, resulting in an increase in cost.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and the object of the present invention is to suppress a decrease in rigidity of the suspension member, and to prevent an increase in cost due to an increase in the number of parts and assembly steps. It is to provide an arrangement structure.

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 having a front end and a rear end connected to the engine and the suspension member via a small diameter bush provided at the front end and a large diameter bush provided at the rear end, respectively;
As an arrangement structure of the torque rod of a vehicle having
The torque rod is passed through a through hole formed in the front wall of the suspension member with the front end first, and the rear end disposed in the suspension member of the torque rod is inserted into the large-diameter bush from below. A structure is adopted in which the bolt is inserted and fixed to the upper wall of the suspension member.

  The invention according to claim 2 is the invention according to claim 1, wherein the size of the through hole formed in the front wall of the suspension member is set larger than the small diameter bush and smaller than the large diameter bush. It is characterized by.

  According to the present invention, the suspension member has a cross-sectional shape with an open bottom, and the torque rod is passed through the through hole formed in the front wall of the suspension member from the rear of the vehicle with the small-diameter bush provided at the front end first. Therefore, the size of the through hole can be reduced to the minimum size required for the small-diameter bush to pass through, and the decrease in rigidity due to the through hole of the suspension member can be minimized. The engine swing can be effectively suppressed.

  Further, since the gap between the through hole and the torque rod inserted through the hole is kept small, a cover or the like that closes the gap becomes unnecessary, and the number of parts and the number of assembly steps can be reduced to reduce the cost. Further, mud, stones, snow, rainwater and the like that have passed through the through hole can be easily discharged.

  Further, since the torque rod is fastened and fixed to the upper wall of the suspension member by tightening the bolt from below, the mounting workability is improved. Since the torque rod is attached to the aluminum suspension member opened downward, it is not necessary to pull out the part from the bag-like attachment part to the engine side like a sheet metal suspension member having a hollow cross-sectional structure. Desorption workability is improved.

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 attachment structure of a torque rod. It is a sectional side view which shows the attachment structure of a torque rod. It is a fragmentary perspective view which shows the penetration state of the torque rod to the through-hole of a suspension member. It is a fragmentary perspective view which shows the penetration state of the torque rod to the through-hole of the conventional suspension member. It is a fragmentary perspective view which shows the state which closed the cover part of the torque rod penetration part to the through-hole of the conventional suspension member.

  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 a suspension arm mounting structure, and FIG. FIG. 9 is a partial sectional side 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 is an exploded perspective view showing the torque rod mounting structure. FIG. 12 is a side sectional view showing the torque rod mounting structure, and FIG. 13 is a partial perspective view showing a penetration state of the torque rod into the through hole of the suspension member. That.

  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 the direction of opening in the vertical direction. A small-diameter 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. A large-diameter bush 44 is press-fitted into.

  Although not shown, the small-diameter bush 43 press-fitted into the small-diameter cylindrical boss 13B at the front end is configured by filling an elastic member between the inner cylinder and the outer cylinder arranged concentrically, and has a large diameter at the rear end. The large-diameter bush 44 press-fitted into the cylindrical boss 13C on the side is formed by connecting an inner cylinder 44A and an outer cylinder 44B concentrically connected to each other by an elastic member 44C having a substantially V shape in plan view. Has been. The small-diameter bush 43 on the front end side has a small diameter and a high spring constant, and the large-diameter bush 44 on the rear end side has a large diameter and a low spring constant.

  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. A large-diameter cylindrical boss 13C on the rear end side is disposed inside the suspension member 4 (a 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 integrally with a front portion of the upper wall 4A of the suspension member 4 in the vehicle width direction, and a screw hole 45 penetrating vertically is provided in the boss 4j. 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 large-diameter bush 44. The through hole 14 is formed in such a size that the small-diameter cylindrical boss 13B into which the small-diameter bush 43 is press-fitted can pass but the large-diameter cylindrical boss 13C into which the large-diameter bush 44 is press-fitted cannot pass. Thus, the decrease 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 rear portion of the engine by a bolt (not shown) inserted laterally into the inner cylinder of the small-diameter 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, in the cylindrical boss 13C bonded to the rear end portion of the torque rod 13, the inner cylinder 44A of the large diameter bush 44 is formed on the boss 4j of the upper wall 4A of the suspension member 4 as shown in FIG. The screw holes 45 are positioned so as to coincide with each other. 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 44A of the large-diameter bush 44, and the bolt is passed from below through the bolt insertion hole of the connecting plate and the inner cylinder of the large-diameter bush. By screwing into the screw hole 45 of the boss 4j erected on the 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 large-diameter 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 torque rod 13 is passed from the rear of the vehicle through the through hole 14 formed in the front wall 4B of the suspension member 4 with the small-diameter bush 43 provided at the front end first. The size of the through hole 14 can be made the minimum size required for the small diameter side bush 43 to pass. For this reason, a decrease in rigidity due to the through hole 14 of the suspension member 4 can be minimized, and the torque rod 13 can effectively suppress the swing of the engine. 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 can be 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 44, and the rigidity of the suspension member 4 can be further increased.

  In the state where the torque rod 13 is attached, as shown in FIG. 13, between the through hole 14 formed in the front wall 4B of the suspension member 4 and the rod body 13A of the torque rod 13 inserted through the through hole 14. Since the formed gap is suppressed to be smaller than the conventional gap shown in FIG. 14, a cover for closing the gap is not necessary, and the number of parts and the number of assembling steps can be reduced to reduce the cost. Since the lower part of the suspension member 4 is open, snow, mud and the like that enter the suspension member 4 from the gap formed in the through hole 14 of the suspension member 4 are dropped and discharged as they are. The

  Furthermore, since the torque rod 13 is fastened and fixed to the lower surface of the upper wall 4A of the suspension member 4 by tightening the bolt 50 from below, the mounting workability is improved. The torque rod 13 is attached to the aluminum suspension member 4 that is opened downward, and can be pulled out rearward and downward of the suspension member 4, so that the bag is like a sheet metal suspension member having a hollow cross-sectional structure. The operation of pulling out the component from the mounting portion to the engine side becomes unnecessary, and the effect of improving the detachability of the component is also obtained.

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 4j Suspension member boss 13 Torque rod 14 Suspension member through-hole 43 Small-diameter bush 44 Large-diameter bush 45 Suspension Member screw hole 47 Connecting plate 48 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 having a front end and a rear end connected to the engine and the suspension member via a small diameter bush provided at the front end and a large diameter bush provided at the rear end, respectively;
An arrangement structure of the torque rod of a vehicle having
The torque rod is passed through a through hole formed in the front wall of the suspension member with the front end first, and the rear end disposed in the suspension member of the torque rod is inserted into the large-diameter bush from below. A torque rod arrangement structure for a vehicle, wherein the bolt is inserted and secured to an upper wall of a suspension member. 2. The torque rod arrangement structure for a vehicle according to claim 1, wherein the size of the through hole formed in the front wall of the suspension member is set larger than the small diameter bush and smaller than the large diameter bush. .

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