JP2005225321A - Mounting structure for torque rod and torque rod bracket - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new mounting structure for a torque rod capable of protecting a mounting bolt for mounting a torque rod to a power unit from damage due to hitting of an obstacle projected from a road surface and a jumped up stone. <P>SOLUTION: A connection plate part 16 in a torque rod bracket 10 is installed in the state where it is gradually and downwardly inclined from a front fixing part 12 fixed to a lower surface 4 of the power unit 2 toward a rear fixing part 14 for mounting a vertically arranged vibration-proof bush 8 to the power unit 2. Whereas, a pair of reinforcement ribs 36, 36 is integrally formed on both edges in a width direction of the connection plate part 16 and a distance between the opposed surfaces of the reinforcement ribs 36, 36 is made smaller than a width dimension of a head part of a fixing bolt 52 fastened/fixed to the rear fixing part 14. The reinforcement ribs 36, 36 are continuously extended to at least the rear fixing part 14 and are projected to the part lower than the head part of the fixing bolt 52. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a torque rod mounting structure for connecting and supporting a power unit to a vehicle body in an automobile and a bracket used therefor, and more particularly, a structure for mounting one end of a torque rod to the bottom of a power unit and the use thereof. The present invention relates to a torque rod bracket.

  Conventionally, in an automobile, in order to achieve excellent ride comfort by suppressing vibration transmission from a power unit including an engine which is a main vibration generation source to the vehicle body, and to protect various members attached to the vehicle body from vibration. In addition, the power unit is supported by the vehicle body via a vibration isolation support mechanism. Such an anti-vibration support mechanism is generally composed of a plurality of anti-vibration devices. As one type of the anti-vibration device, there is known one that connects and supports a power unit to a vehicle body using a torque rod. For example, this is a mechanism for connecting and supporting a power unit to a vehicle body around a torque roll axis (see, for example, Patent Document 1).

  Incidentally, the torque rod is generally arranged in the front-rear direction of the automobile, and its rear end is attached to the vehicle body and its front end is attached to the power unit. The front end of the torque rod is generally assembled with an anti-vibration bush with a structure in which the inner and outer cylinder brackets are connected by a rubber elastic body, and the torque rod is connected to the power unit in an anti-vibration manner. The transmission of vibrations in the power unit to the vehicle body is suppressed.

  In addition, it is preferable that the attachment portion of the torque rod to the power unit is set on the bottom lower surface of the power unit in consideration of the operational efficiency of the torque roll reaction force exerted on the power unit from the vehicle body through the torque rod and the arrangement space. .

  However, when the front end of the torque rod is attached to the lower surface of the power unit, the front end of the torque rod protrudes downward from the power unit and is generally located at the lowest ground level of the vehicle or close to it. There is an inconvenience that obstacles protruding from the road surface, rocks raised up, and the like easily hit the front end of the torque rod to be positioned at the front of the vehicle.

  In particular, as shown in FIGS. 11 to 12 of Patent Document 2, in an aspect in which the vibration isolating bush is disposed with its central axis directed in the vehicle vertical direction, the vibration isolating bush is inserted into the inner cylindrical fitting. The head of the fixing bolt that secures the inner cylinder fitting to the power unit is positioned at the lowest position by being screwed to the lower surface of the power unit, and when an obstacle or stepping stone on the road surface hits the bolt head There is a problem that a large shearing force acts on the fixing bolt and is easily damaged. And the deformation | transformation of a bolt head has a possibility of making the removal | desorption operation | work of a bolt difficult.

  In order to cope with such a problem, it has been conventionally proposed to attach an under guard to the bottom surface of the vehicle (see, for example, Patent Document 3). However, since it is inevitable that the under guard that covers the bottom of the vehicle becomes large in order to secure its mounting position and strength, an increase in manufacturing cost and an increase in vehicle weight are problematic. There was a problem that the minimum ground clearance, which is the lower surface of the under guard, was lowered in a wide range. In addition, if the underground guard is used and the minimum ground clearance is to be secured, the volume of the engine room will be limited, and the freedom of layout of various members in the engine room will be limited. There's a problem. In addition, if a large plate-shaped under guard is installed, the lower part of the power unit will be covered in a wide area, and air in the engine room may accumulate, which may affect the heat dissipation of the power unit. It was.

JP-A-10-114226 JP-A-8-332858 JP-A-8-142922

  Here, the present invention has been made in the background as described above, and the problem to be solved is to advantageously avoid damage caused by hitting obstacles, stepping stones, etc. on the road surface, To provide a novel attachment structure for a power unit of a torque rod, in which the end of the torque rod can be attached to the lower surface of the power unit via a vibration isolating bush arranged with the central axis extending in the vertical direction. is there.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible. In addition, aspects or technical features of the present invention are not limited to those described below, but are described in the specification and drawings, or invention ideas that can be understood by those skilled in the art from the recognition thereof. It should be understood that

(Aspect 1 of the present invention relating to a torque rod mounting structure)
Aspect 1 of the present invention relating to the mounting structure of the torque rod is provided with an anti-vibration bush in which an inner cylinder fitting and an outer cylinder fitting are connected by a rubber elastic body so that its central axis extends substantially vertically downward from the lower surface of the power unit. In addition, a torque rod bracket fixed to the power unit is extended and overlapped with an axial lower end surface of the inner cylinder fitting in the vibration isolating bush, and a fixing bolt inserted through the torque rod bracket and the inner cylinder fitting is attached. The inner cylinder fitting is tightened and fixed between the torque rod bracket and the power unit by being screwed to the power unit, while one end of the torque rod connecting the power unit to the vehicle body is connected to the vibration isolating bush. By fixing to the outer cylinder fitting, one end of the torque rod is attached to the power unit via the vibration isolating bush. A rod mounting structure, wherein the torque rod bracket is formed by integrally forming a front fixing plate portion and a rear fixing plate portion at both ends in the longitudinal direction of a connecting plate portion extending in a substantially straight line with a predetermined length. The front fixing plate portion is fixed to the bottom lower surface of the power unit, and the connecting plate portion is disposed in a state of extending downwardly from the front fixing plate portion toward the rear of the vehicle, and the rear fixing plate. A bolt insertion hole is provided in the portion, the rear fixing plate portion is overlaid on the lower end surface of the inner cylinder fitting in the vibration-proof bushing, and the fixing bolt is inserted into the bolt insertion hole to fix the bolt head to the rear. The connection is achieved by integrally forming reinforcing ribs that protrude downward and extend continuously over the entire length at both edges in the width direction of the connection plate portion while being brought into contact with the lower surface of the plate portion and tightening. As a whole, the portion is formed in a substantially concave groove shape downward, and the distance between the opposing surfaces in the width direction of the reinforcing ribs is made smaller than the width dimension of the bolt head of the fixing bolt, and the reinforcing ribs are formed on the rear fixing plate portion. The torque rod mounting structure extends to the bottom and protrudes downward from the head of the fixing bolt.

  In the torque rod mounting structure configured according to this embodiment, the connecting plate portion is disposed so as to be gradually inclined downward from the front fixing portion toward the rear fixing portion. Reinforcing ribs projecting at both edges in the width direction extend to the rear fixing part and protrude downward from the head of the fixing bolt. As long as the distance between the opposing surfaces of the ribs is larger than the distance between the opposing faces of the ribs, they do not directly hit the fixing bolts, but hit the reinforcing ribs of the connecting plate portion. Here, since the connecting plate portion is directly fixed to the power unit at the front fixing portion, an external force caused by an obstacle or a stone hitting the connecting plate portion is directly applied to the fixing bolt. Therefore, the external force acting on the fixing bolt can be suppressed and the damage can be prevented. Obstacles and stones that are smaller than the distance between the opposing faces of the reinforcing ribs of the connecting plate cannot be denied directly against the head of the fixing bolt, but such obstacles and stones are generally natural. Therefore, the fixing bolt made of metal such as steel has a sufficiently high strength, and the fixing bolt is not damaged by hitting such a small obstacle or stone.

  Therefore, according to the mounting structure of the torque rod of this aspect, the under guard can be attached without making the distance between the opposing surfaces of the reinforcing ribs of the torque rod bracket smaller than the width of the head of the fixing bolt. Even without using a special large member such as a guard, a small torque rod bracket mounted to attach the vibration isolating bushing to the power unit can be used effectively, such as obstacles protruding from the road surface or rocks raised up It is possible to effectively avoid the damage of the fixing bolt due to the hit.

  Note that the connecting plate portion including the reinforcing rib may be formed to be somewhat curved for convenience of layout with other members. For the same reason, the distance between the opposing faces of the reinforcing ribs only needs to be smaller than the width of the head of the fixing bolt over the substantially entire length, and the same distance between the opposing faces is not necessarily maintained over the entire length. Need not be formed. Further, when the width of the head of the fixing bolt is different in the direction perpendicular to the axis, such as a hexagon bolt, the distance between the opposing surfaces of the reinforcing ribs may be smaller than the maximum width. As mentioned above, the material of fixing bolts such as ferrous metals is sufficiently strong compared to natural stones and rocks that are brought into contact therewith. Even a contact object having a cross-sectional area more than double can exhibit sufficient strength to prevent breakage.

(Aspect 2 of the present invention relating to the mounting structure of the torque rod)
Aspect 2 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to aspect 1, wherein the connecting plate portion of the torque rod bracket having a substantially concave groove shape is provided inside the concave groove. An inwardly inclined surface that forms an inward protruding portion that protrudes toward the inside and rises by being inclined toward the lower opening from the upper bottom portion of the recessed groove as it goes backward in the recessed groove. It is characterized by having formed.

In the torque rod mounting structure according to this embodiment, when an obstacle or stone smaller than the distance between the opposing surfaces of the pair of reinforcing ribs in the torque rod bracket enters the inside of the groove from the front of the vehicle. Also, it will be guided so as to be discharged downward from the groove by the inward projection. Therefore, even such a small obstacle or stone can be effectively avoided from hitting the head of the fixing bolt of the torque rod bracket in the direction perpendicular to the axis, and the damage to the fixing bolt is more advantageous. It can be prevented. The inward protruding portion may be formed from any of the bottom wall portion and both side wall portions of the connecting plate portion having a concave groove shape, and is formed across a plurality of wall portions. Also good. Specifically, for example, it is advantageous to cut and raise a part of the bottom wall part or both side wall parts, or to fix another member to the bottom wall part or both side wall parts by welding or the like. Can be formed. In addition, it is desirable that the inner inclined surface of the inward projecting portion is located so that the portion positioned at the lowermost position on the rear side protrudes vertically downward from the lower end of the head of the fixing bolt. It is possible to more effectively prevent the small bolts, such as small obstacles and stones, that enter the inside of the groove and guided from the front, from hitting.
2. The torque rod mounting structure according to claim 1, wherein the connecting plate portion having a substantially concave groove shape of the torque rod bracket is provided with a lid portion that covers a downward opening thereof.

(Aspect 3 of the present invention relating to the mounting structure of the torque rod)
Aspect 3 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to aspect 1, wherein the connecting plate portion of the torque rod bracket having a substantially concave groove shape is opened downwardly. The present invention is characterized in that a lid for covering the part is provided.

  In the torque rod mounting structure according to this aspect, the opening toward the lower side of the concave groove of the connecting plate portion is covered by the outer surface of the lid portion provided between the lower end edges of the reinforcing ribs on both sides. In addition, an inclined surface that is gradually inclined downward as it goes from the front to the rear of the connecting plate portion is formed. Therefore, even when an obstacle, stone, or the like smaller than the distance between the opposing surfaces of the pair of reinforcing ribs approaches the connecting plate portion from the front of the vehicle, the presence of this lid portion only prevents entry into the recessed groove. Instead, it is guided obliquely downward toward the rear by the inclined surface of the lid, and the contact of the fixing bolt with the head can be avoided more effectively. The lid portion can be formed by fixing a metal plate formed separately from the reinforcing rib by welding or the like. For example, the tip edge portion of one reinforcing rib faces the other reinforcing rib. It can be formed more advantageously by bending it at a substantially right angle and superimposing it on the lower end surface of the other reinforcing rib and hanging it over in the width direction of the concave groove.

(Aspect 4 of the present invention relating to a torque rod mounting structure)
Aspect 4 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to any one of the first to third aspects, wherein in the torque rod bracket, the rear fixing plate portion is connected to the connecting plate portion. It is characterized in that it is formed in a bent shape on one surface side, and the rear fixing plate portion is disposed so as to spread substantially horizontally in the assembled state of the torque rod bracket.

  In the torque rod mounting structure constructed according to this aspect, the rear fixing portion is substantially horizontal, and therefore, the bolt head superimposed on the lower surface of the rear fixing portion can be directly hit by obstacles, stepping stones, etc. Hits can be avoided more advantageously. In particular, even when an obstacle or the like moves to the rear of the vehicle along the reinforcing rib while striking the reinforcing rib of the connecting plate portion disposed at an inclination, the rear of the reinforcing rib inclined by the moving force When the obstacles are guided so as to protrude obliquely downward from the end, the bolt heads overlapped with the rear fixed part bent in the horizontal direction from the rear end of the connecting plate part. By being guided so as to jump, it is possible to more effectively avoid hitting the bolt head from the direction perpendicular to the axis such as an obstacle.

(Aspect 5 of the present invention relating to a torque rod mounting structure)
Aspect 5 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to any one of the first to fourth aspects, wherein the torque rod bracket has the connecting plate portion extending in the vehicle front-rear direction and a horizontal plane. In contrast, it is assembled in a state where it is inclined downward from the front fixed plate portion toward the rear fixed plate portion with an inclination angle of 45 degrees or less. In such a torque rod mounting structure according to this embodiment, even when an obstacle, a stepping stone, or the like hits the connecting plate portion from the front, the striking direction with respect to the connecting plate portion is sufficiently inclined. Therefore, the bending force exerted on the connecting plate portion by hitting can be reduced, and damage to the torque rod bracket itself can be prevented.

(Aspect 6 of the present invention relating to a torque rod mounting structure)
Aspect 6 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to any one of the first to fifth aspects, wherein in the torque rod bracket, the rear fixing plate portion is more than the connecting plate portion. In addition to a wide flat plate shape, reinforcing ribs are integrally formed over the entire length at both side edges in the width direction of the rear fixed plate portion so as to continuously extend from the connecting plate portion. Is a feature. In the torque rod mounting structure configured in accordance with this aspect, the rear fixing plate portion is hit by obstacles or stepping stones against the head of the fixing bolt superimposed on the rear fixing plate portion from the lower surface. It can be avoided more effectively by means of the reinforcing ribs provided in.

(Aspect 7 of the present invention relating to a torque rod mounting structure)
Aspect 7 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to aspect 6, wherein a connecting portion of the rear fixing plate portion with respect to the connecting plate portion is fixed to the rear from the connecting plate portion. The widthwise dimension is gradually widened toward the plate portion, and the reinforcing ribs are integrally formed at both edges in the width direction of the connecting portion. In the torque rod mounting structure structured according to this embodiment, the reinforcing ribs extending from the connecting plate portion to the fixing plate portion are continuously provided at the connecting portion of the connecting plate portion and the fixing plate portion having different widthwise dimensions. In addition, as a whole, it is possible to easily form it while advantageously ensuring strength against external force. In addition, since the reinforcing ribs on both sides in the width direction gradually expand in such a connecting portion, it is fixed by guiding the obstacles and foreign matters coming from the front so as to avoid the left and right directions with such reinforcing ribs. The effect of preventing the bolt from hitting the head is also exhibited.

(Aspect 8 of the present invention relating to a torque rod mounting structure)
Aspect 8 of the present invention relating to a torque rod mounting structure is the torque rod mounting structure according to any of the first to seventh aspects, wherein the front fixing plate portion of the torque rod bracket has a flat plate shape. A bolt insertion hole is formed in the front unit, and the front fixing plate portion is overlapped with the lower surface of the power unit and fixed with a bolt. In the torque rod mounting structure configured according to this embodiment, the front fixing portion of the torque rod bracket can be easily fixed to the power unit with high strength. Compared with the case where the torque unit is fixed to the power unit by welding or caulking, the workability of attaching the torque bracket to the vehicle can be improved.

(The present invention relating to a torque rod bracket)
The feature of the present invention regarding the torque rod bracket is that a vibration-proof bushing in which the inner cylinder fitting and the outer cylinder fitting are connected by a rubber elastic body is disposed so that the central axis extends substantially vertically downward from the lower surface of the power unit. Then, while fixing the inner cylinder fitting of the vibration isolating bushing to the power unit, fixing one end of the torque rod to the outer cylinder fitting of the vibration isolating bushing, one end of the torque rod A torque rod bracket that is employed in a mounting structure of a torque rod that is attached to the power unit via the vibration isolating bush, and that reinforces the inner cylindrical fitting of the vibration isolating bush to the power unit; A connecting plate portion extending in a substantially straight line with a predetermined length; and a front fixing plate portion and a rear fixing plate portion integrally formed at both ends in the longitudinal direction of the connecting plate portion. The front fixing plate portion is fixed to the bottom surface of the bottom portion of the power unit, and the connecting plate portion is disposed so as to extend obliquely downward from the front fixing plate portion toward the rear of the vehicle. Furthermore, the rear fixing plate portion is superposed on the lower end surface of the inner cylinder fitting in the vibration isolating bush, and a bolt insertion hole is provided in the rear fixing plate portion. The rear fixing plate portion by inserting a fixing bolt inserted into the bolt insertion hole of the rear fixing plate portion into the inner cylindrical metal fitting in the vibration-proof bushing and screwing it to the lower surface of the power unit. The inner cylinder fitting can be fastened and fixed between the bolt head of the fixing bolt superimposed on the lower surface of the power unit and the power unit, while both edges in the width direction of the connecting plate portion In Reinforcing ribs that protrude downward are continuously provided over the entire length of the connecting plate portion at a distance between the opposing surfaces that is smaller than the width of the head of the fixing bolt that is fastened and fixed to the rear fixing portion. And the reinforcing ribs extend continuously to at least the rear fixing portion and protrude below the head of the fixing bolt.

  In the torque rod bracket structured according to such an embodiment, the torque rod bracket is suitably employed when fixing one end of the torque rod to the lower surface of the power unit, and thereby the torque rod according to the present invention as described above. The mounting structure can be advantageously realized. And by using such a bracket, the fixing bolt that fixes the torque rod to the power unit via the anti-vibration bushing can be secured from hitting obstacles, stepping stones, etc. without attaching a large separate member such as an under guard. It can be advantageously protected.

  As is clear from the above description, in the torque rod mounting structure and the torque rod mounting bracket structured according to the present invention, both of the fixing bolts for fixing the torque rod to the power unit via the vibration isolating bushing are provided. Damage caused by hitting obstacles, stepping stones, etc. by using the torque rod bracket to attach the vibration isolating bushing to the power unit without using a large and separate protective member such as under guard Can be effectively avoided.

  Therefore, according to the present invention, it is possible to eliminate the need for a special member such as an under guard while highly realizing the prevention of damage to the mounting portion of the torque rod to the power unit, thereby reducing the manufacturing cost and reducing the weight of the vehicle body. Many effects such as an improvement in the degree of freedom of member layout in the engine room and an effective cooling effect can be exhibited.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, FIG. 1 shows an embodiment of a torque rod mounting structure having a structure according to the present invention. In FIG. 1, reference numeral 2 denotes a power unit of an automobile, and one end of a torque rod 6 is attached to the lower surface 4 thereof. The torque rod 6 applies a torque roll reaction force from the vehicle body to the power unit 2 by connecting the power unit 2 to a vehicle body (not shown). It is attached to the power unit 2 via 8. In this case, the vibration isolating bush 8 is mounted on the power unit 2 using the torque rod bracket 10 having a specific structure. In addition, the up-down direction in FIG. 1 is a substantially vertical up-down direction in a real vehicle, and the left-right direction in the figure is a substantially front-back direction in the real vehicle.

  More specifically, as shown in FIGS. 2 and 3, the torque rod bracket 10 includes a connecting plate portion 16 having a longitudinal flat plate shape extending directly with a substantially constant width. Further, a front plate portion 12 as a front fixing portion and a rear plate portion 14 as a rear fixing portion are integrally formed at both longitudinal ends of the connecting plate portion 16. The front plate portion 12, the rear plate portion 14, and the connecting plate portion 16 are integrally formed by a single plate fitting made of a metal material such as iron.

  Moreover, the connection site | part of the front board part 12 with respect to one edge part (front edge part) of the connection board part 16, and the connection site | part of the back plate part 14 with respect to the other edge part (back edge part) of the connection board part 16 are Are bent portions 18 and 24, respectively. By providing these bent portions 18 and 24, the front plate portion 12 and the rear plate portion 14 are bent and connected to the connecting plate portion 16 by a predetermined angle toward the opposite plate surfaces. It has been. In particular, in the present embodiment, the bending angles α of both the bent portions 18 and 24 are the same in opposite directions, and an appropriate angle of 45 degrees or less, preferably α = 10 degrees to 40 degrees. Is set to As a result, the connecting plate portion 16 can be inclined by a predetermined angle: α with respect to the horizontal line while the front plate portion 12 and the rear plate portion 14 are both supported so as to be substantially horizontal. (See FIG. 1).

  Each bending angle (α) at the front bending portion 18 and the rear bending portion 24 is the inclination angle of the mounting surface of the torque rod bracket 10 in the power unit 2 or the vibration isolating bush 8 or the relative positional relationship between these mounting surfaces. Needless to say, the bending angles of the two bent portions 18 and 24 can be set to different values.

  Furthermore, both the front plate portion 12 and the rear plate portion 14 are formed with a width dimension B2 larger than the width dimension B1 of the connecting plate part 16. In addition, as for the connection part with respect to the connection board part 16 in the front board part 12 and the back board part 14, all the wide part 13 which spreads from the bending parts 18 and 24 which are the edge parts of the connection board part 16 to the width direction both sides, It is set to 15.

  The front plate portion 12 and the rear plate portion 14 are formed with circular bolt insertion holes 22 and 28 penetrating in the plate thickness direction at respective substantially central portions. In particular, in the present embodiment, the front plate portion 12 and the rear plate portion 14 include the widened portions 13 and 15 and the bolt insertion holes 22 and 28 and are formed with substantially the same shape.

  Furthermore, a pair of reinforcing ribs 36 are formed on both edges in the width direction of the connecting plate portion 16. These reinforcing ribs 36 and 36 are bent and protruded from the connecting plate portion 16 at a substantially right angle toward one surface of the connecting plate portion 16 (a surface that is downward in the mounted state of FIG. 1). The connecting plate portion 16 is continuously formed over the entire length of the connecting plate portion 16 with a substantially constant protruding height. Thereby, the connection board part 16 is made into the substantially concave groove shape opened toward the downward direction over the full length. The reinforcing ribs 36 and 36 extend continuously to the front plate portion 12 and the rear plate portion 14, and the reinforcing ribs 32 are also provided on both sides of the front plate portion 12 and the rear plate portion 14 in the width direction. , 32 and 40, 40 are integrally formed continuously over the entire length in the longitudinal direction.

  The reinforcing ribs 32, 32 of the front plate portion 12 are formed on both sides of the widened portion 13, and the distance between the opposed surfaces in the width direction is the distance between the opposed surfaces of the connecting plate portion 16: B1 outward. Expanded portions 32a and 32a that are gradually enlarged, and wide portions 32b and 32b that extend substantially in parallel with a distance B2 between the opposing surfaces in the width direction that is a predetermined amount larger than the connecting plate portion 16. . Similarly, the reinforcing ribs 40, 40 of the rear plate portion 14 are also formed on both sides of the widened portion 15, and the distance between the facing surfaces in the width direction is outward from the distance between the facing surfaces of the connecting plate portion 16: B1. And wide portions 40b, 40b extending substantially in parallel with a distance B2 in the width direction that is a predetermined amount larger than the connecting plate portion 16: B2. Has been.

  The pair of reinforcing ribs 36, 36, 32, 32, 40, and 40 formed on the connecting plate portion 16, the front plate portion 12, and the rear plate portion 14, respectively, at both edges in the width direction of the torque rod bracket 10. These are integrally formed as a whole continuously with each other in the longitudinal direction. As a result, the torque rod bracket 10 has a groove shape in which the cross section of the torque rod bracket 10 opens downward over the entire length including the connecting plate portion 16, the front and rear bent portions 18 and 24, and the plate portions 12 and 14. Is increased so that a large bending rigidity is exhibited.

  Further, in the connecting plate portion 16, a distance B1 between the opposing surfaces of the pair of reinforcing ribs 36 is inserted through the bolt insertion hole 28 of the rear plate portion 14 and attached to a bolt head 53 of a fixing bolt 52 described later. Outer diameter dimension: smaller than D. In particular, in the present embodiment, the distance B1 between the opposing surfaces of the pair of reinforcing ribs 36 is smaller than three times the outer diameter of the base end portion of the leg 49 protruding from the head 53 of the fixing bolt 52, Preferably, it is set smaller than twice. On the other hand, in the front plate portion 12 and the rear plate portion 14, the distance between the opposing surfaces B2 of the pair of reinforcing ribs 32, 32 and 40, 40 is the outer diameter of the bolt heads 51, 53 of the fixing bolts 50, 52: It is made sufficiently larger than D.

  As a result, rocks having a size larger than the bolt heads 51 and 53 of the fixing bolts 50 and 52 are blocked by the pair of reinforcing ribs 36 and 36 so as not to enter between the opposing surfaces of the reinforcing ribs 36 and 36. ing. On the other hand, on the lower surfaces 23 and 29 of the front plate portion 12 and the rear plate portion 14, the fixing bolts 50 and 52 are attached and detached between the opposing surfaces of the pair of reinforcing ribs 32, 32 and 40 and 40. A sufficiently large space is set so that a work area such as a socket wrench can be secured.

  Furthermore, the protruding height of the pair of reinforcing ribs 40, 40 formed on the rear plate portion 14 is set to be larger than the height dimension of the bolt head 53 of the fixing bolt 52 attached to the rear plate portion 14. ing. In addition, although the protrusion height dimension of the reinforcement ribs 36, 36, 32, 32 of the connecting plate portion 16 and the front plate portion 12 is not particularly limited, in the present embodiment, these reinforcement ribs 36, 36, 32 and 32 also extend over the entire length and have substantially the same protruding height dimension H as the reinforcing ribs 40 and 40 of the rear plate portion 14, and fixing bolts 50 and 52 attached to the front plate portion 12 and the rear plate portion 14. The heights of the bolt heads 51 and 53 are made larger. As a result, in the front plate portion 12 and the rear plate portion 14, the bolt head portions 51 and 53 of the fixing bolts 50 and 52 that are inserted and attached through the bolt insertion holes 22 and 28 are superimposed on the lower surfaces 23 and 29. Under the attached state, it can be accommodated between the opposing surfaces of the pair of reinforcing ribs 32, 32, 40, 40.

  The torque rod bracket 10 having the above-described structure is formed by punching a steel plate or the like into an appropriate shape and adjusting the outer shape, and after forming the bolt insertion holes 22 and 28, It can be advantageously manufactured by forming a pair of reinforcing ribs 32, 32, 36, 36, 40, 40 simultaneously.

  As shown in FIG. 1, the torque rod bracket 10 having such a structure is disposed and mounted so as to extend in the vehicle front-rear direction below the power unit 2 of the automobile. That is, the front plate portion 12 of the torque rod bracket 10 is superimposed on the substantially horizontal lower surface 4 of the power unit 2, and the fixing bolt 50 inserted through the bolt insertion hole 22 is screwed into the fixing screw hole 54 of the power unit 2. Thus, the bolt head 51 is superposed on the lower surface 23 of the front plate portion 12, whereby the front plate portion 12 is fastened and fixed to the power unit 2.

  Further, in such a mounted state, the connecting plate portion 16 of the torque rod bracket 10 is inclined by a predetermined angle: α so as to gradually extend downward from the front plate portion 12 toward the rear of the vehicle. The position is gradually spaced downward from 4 toward the rear of the vehicle. The rear plate portion 14 is opposed to the lower surface 4 of the power unit 2 by a predetermined distance from each other in the vertical direction, and between the substantially parallel facing surfaces of the power unit 2 and the rear plate portion 14. An anti-vibration bush 8 is assembled.

  The anti-vibration bushing 8 includes a small-diameter cylindrical inner cylinder fitting 64 and a large-diameter cylindrical outer cylinder fitting 66 that are arranged on substantially the same central axis and spaced apart from each other by a predetermined distance in the radial direction. The inner and outer cylindrical metal fittings 64 and 66 have a structure in which radially opposed surfaces are elastically connected by a thick cylindrical main rubber elastic body 68.

  The anti-vibration bushing 8 is disposed below the power unit 2 with the central axis of the inner and outer cylinder fittings 64 and 66 extending in a substantially vertical direction, and the inner cylinder fitting 64 is connected to the power unit 2 and the rear plate. The both end surfaces in the axial direction of the inner cylinder fitting 64 are overlapped with the lower surface 4 of the power unit 2 and the upper surface of the rear plate portion 14. Under such a state, the fixing bolt 52 inserted through the bolt insertion hole 28 of the rear plate portion 14 is inserted into the inner cylinder fitting 64 and screwed into the fixing screw hole 55 of the power unit 2. 53 is superimposed on the lower surface 29 of the rear plate portion 14. As a result, the inner cylindrical metal fitting 64 of the vibration isolating bush 8 is sandwiched between the power unit 2 and the rear plate portion 14 and is fixed to the power unit 2 so as to protrude downward from the power unit 2.

  In the anti-vibration bush 8 shown in FIG. 1, a pair of slits 72 and 74 extending in the axial direction are formed on both side portions opposed to each other with the inner cylinder fitting 64 sandwiched in the vehicle longitudinal direction. The spring ratio in the direction perpendicular to the axis in the vehicle longitudinal direction and the vehicle lateral direction is adjusted. Further, a contact portion 67 that protrudes radially outward toward the inside of the slit 74 at the rear of the vehicle is integrally formed with the inner tube fitting 64, and the contact portion 67 is formed with respect to the outer tube fitting 66. A stopper mechanism that limits the relative displacement in the radial direction of the inner and outer cylindrical metal fittings 64 and 66 by buffering in the radial direction is configured.

  In the present embodiment, the torque rod 6 having a hollow circular rod structure formed by abutting and welding a pair of upper and lower longitudinal plate members 76, 78 extending with a substantially semicircular cross section at each opening. Is adopted. Further, the axial end portions of the longitudinal plate members 76 and 78 are both substantially flat, and large-diameter cylindrical portions 80 and 80 projecting in directions away from each other are integrally formed therewith. And these cylindrical parts 80 and 80 are piled up in the shape of an arm eye, and the outer cylinder metal fitting 66 of anti-vibration bush 8 is constituted.

  In short, in the present embodiment, the vibration isolating bush 8 is integrally formed at the end of the torque rod 6. Further, the main rubber elastic body 68 constituting the vibration isolating bush 8 extends to the outer peripheral surfaces of the cylindrical portions 80 and 80 constituting the outer cylinder fitting 66. Thereby, while being filled between the overlapping surfaces of the longitudinal plate members 76 and 78 constituting the torque rod 6, a damping rubber 82 covering the outer peripheral surface of the longitudinal plate members 76 and 78 is formed.

  In the mounting structure of the torque rod 6 configured as described above to the power unit 2, the fixing is made to project greatly downward from the lower surface 4 of the power unit 2 without using a separate protective member such as an under guard. The bolt 52 can be advantageously protected from damage caused by hitting obstacles, stepping stones and the like by skillfully using the torque rod bracket 10.

  That is, when the automobile is running, a contact object 85 such as a rock protruding from the road surface or a flying stone repelled by a wheel enters the lower part of the vehicle body from the front and protrudes downward from the power unit at the front part of the vehicle. When the vibration-proof bushing 8 is about to strike, if the abutting object 85 is large, the pair of reinforcing ribs 36 projecting from the connecting plate portion 16 when striking against the torque rod bracket 10 is used. , 36 hits the protruding front end surface. After that, the contact object 85 is guided by the projecting tip surfaces of the reinforcing ribs 36, 36 without entering between the pair of reinforcing ribs 36, 36, and positions 85a to 85b indicated by phantom lines in the drawing. To be sent backwards.

  Further, the abutment 85 is continuously guided from the projecting tip surfaces of the reinforcing ribs 36 and 36 of the connecting plate portion 16 to the projecting tip surfaces of the reinforcing ribs 40 and 40 of the rear plate portion 14, thereby fixing bolts. It will be sent to the rear of the automobile beyond the bottom of the bolt head 53 of 52. In this way, the contact of the abutting object 85 with the bolt head 53 of the fixing bolt 52 can be avoided, thereby preventing the fixing bolt 52 from being damaged, and the mounting structure of the torque rod 6 to the power unit 2. Can be effectively protected.

  In the rear plate portion 14, the distance between the opposing surfaces of the reinforcing ribs 40, 40 is larger than the distance between the opposing surfaces of the reinforcing ribs 36, 36 of the connecting plate portion 16. In some cases, there is a possibility that the abutment 85 may enter between the reinforcing ribs 40. However, if the contact object 85 is at least larger than the distance between the opposing surfaces of the reinforcing ribs 36, 36 of the connecting plate portion 16, the pair of reinforcing ribs 36, 36 inclined obliquely downward at a predetermined angle: α as described above. The abutting object 85 guided rearward along the projecting tip surface of the connecting plate portion 16 and the bent portion 24 of the rear plate portion 14 as it is due to the inertia of the relative movement of the traveling vehicle and the abutting object 85. The relative displacement is performed so as to jump diagonally downward. As a result, even if the abutting object 85 hits the bolt head 53 from the lower surface, hitting the bolt head 53 in the direction perpendicular to the axis can be avoided. The shearing force to be damped is suppressed, and the breakage of the fixing bolt 52 can be effectively prevented.

  Further, when the size of the abutment 85 is smaller than the distance between the opposing surfaces of the reinforcing ribs 36 and 36 of the connecting plate portion 16, it enters between the reinforcing ribs 36 and 36, and is sent to the rear as it is and fixed. The bolt 52 may hit the bolt head 53 in a direction perpendicular to the axis. However, the fixing bolt 52 made of a metal material such as iron as compared with the contact object 85 such as rock has a sufficiently high strength, and at least from the width dimension D of the bolt head 53. If the abutting object 85 has a small size, even if it hits the bolt head 53 in the direction perpendicular to the axis, the abutting object 85 is destroyed, and the fixing bolt 52 is damaged. There is no problem.

  Furthermore, in the present embodiment, since the connecting plate portion 16 is disposed with an inclination angle of α = 45 degrees or less with respect to the horizontal plane, it acts on the connecting plate portion 16 itself by hitting the abutting object 85. As a result, the bending moment and the shearing force can be kept small, and as a result, damage to the entire structure of the mounting portion of the torque rod 6 with respect to the power unit 2 can be effectively prevented.

  That is, as schematically shown in FIG. 4, when the inclination angle of the connecting plate portion 16 with respect to the horizontal plane is α, the abutment 85 hits the connecting plate portion 16 in the horizontal direction from the front of the vehicle. If the force exerted on the connecting plate portion 16 by F is F, the shearing force Fa applied to the connecting plate portion 16 is Fa = F · sin α. Therefore, when α ≦ π / 4, Fa ≦ F / √2, and the external force exerted on the connecting plate portion 16 in the shearing direction can be sufficiently reduced. As the inclination angle α of the connecting plate portion 16 decreases, the shearing force Fa applied to the connecting plate portion 16 decreases. However, when the inclination angle α is small, the front plate portion 12 of the torque rod bracket 10 Difference in height of the rear plate portion 14: h becomes small, and the contact of the abutment 85 with the fixing bolt 50 attached to the front plate portion 12 and the damage of the fixing bolt 50 due to the contact may be a problem. is there. Therefore, the value of the inclination angle α of the connecting plate portion 16 is desirably set in the range of 10 degrees ≦ α ≦ 40 degrees.

  In FIG. 4, the vertical upward lift force Fc expressed as a component force of Fa is applied to the power unit 2 from the connecting plate portion 16 when the abutment 85 hits the connecting plate portion 16, and The force lifts the power unit 2 upward. Based on this lift force: Fc, even if the abutment 85 is not destroyed, the vehicle moves over the abutment 85 and moves forward. Here, since the lift force Fc is Fc = Fa · cos α, even if the inclination angle α of the connecting plate portion 16 is small, an effective lift force Fc is secured and the contact object 85 is overcome. It can be done.

  Next, 2nd-5th embodiment of the torque rod bracket made into the structure according to this invention is described, referring FIGS. In addition, each torque rod bracket shown in the following embodiments can be employed in place of the torque rod bracket 10 as the first embodiment described above in the torque rod mounting structure shown in FIG. About the member and site | part made into the structure similar to the torque rod bracket 10 as this 1st embodiment, the code | symbol same as 1st embodiment is attached | subjected in each figure, respectively, those detailed Description is omitted.

  5 to 6 show a torque rod bracket 86 as a second embodiment of the present invention. The torque rod bracket 86 is formed with inward projections 88, 88 against the inner surfaces of the pair of left and right reinforcing ribs 36, 36 that form a downward groove shape in the connecting plate portion 16. The inward projection 88 is reinforced by, for example, fixing a separately formed rigid material such as metal to the inner surface of the reinforcing rib 36 by welding or by forming it with a welding beat or the like. It is fixed to the rib 36.

  Further, the reinforcing rib 36 is formed near the end of the connecting plate portion 16 on the rear plate portion 14 side. Further, the lower surface of the reinforcing rib 36 is inclined downward from the front end (left end in FIGS. 5 and 6) toward the rear, in other words, toward the lower end of the reinforcing rib 36. The lower surface of the reinforcing rib 36 forms an inner inclined surface 90 that rises in an inclined manner toward the opening side from the front to the rear in the groove.

  It should be noted that the position of the lowermost end point a of the internal inclined surface 90 is positioned below the lower end of the bolt head of the fixing bolt (52) attached to the rear plate portion 14 of the torque rod bracket. It is desirable that

  Accordingly, in the torque rod bracket 86 having such a structure, when an obstacle, stone, or the like smaller than the distance between the opposing surfaces of the pair of reinforcing ribs 36, 36 enters the inside of the concave groove from the front of the vehicle. Are also guided by the inner inclined surfaces 90, 90 of the inward projections 88, 88 so as to be discharged downward from the groove. As a result, even a small obstacle or stone can be effectively avoided from hitting the head of the fixing bolt (52) attached to the torque rod bracket 86 in the direction perpendicular to the axis. Damage can be prevented more advantageously.

  In addition, in the connecting plate part formed in the downward groove shape in this way, it is formed for the purpose of preventing the small bolts such as obstacles and stones from hitting the fixing bolt (52). The inward protrusion is not limited to the structure as described above.

  Specifically, for example, as in a torque rod bracket 92 as a third embodiment shown in FIGS. You may form the inward protrusions 94 and 94 which cut and raise and protrude in the inside of a ditch | groove. In the inward projection 94, an inner inclined surface 96 is formed by the lower end surface. Further, by appropriately setting the cut and raised shape, it is possible to easily and arbitrarily set the inclination angle of the internal inclined surface 96 and the size and shape of the inward projection 94. Furthermore, in the illustrated embodiment, the rear edge of the inner protrusion 94 is connected to the reinforcing rib 36 without being cut, but conversely, the front edge of the inner protrusion 94 is not cut. It may be connected to the reinforcing rib 36.

  Further, like the torque rod bracket 98 as the fourth embodiment shown in FIGS. 9 to 10, a part of the connecting plate portion 16 constituting the bottom wall portion of the groove is cut and raised inside the groove. A projecting inward projection 100 may be formed. In the inward projection 100, an inner inclined surface 102 is formed by the lower surface. In addition, by appropriately setting the cut-and-raised angle, it is possible to easily and arbitrarily set the inclination angle of the internal inclined surface 102. In particular, in the illustrated embodiment, the inner protrusion 100 having a size extending over the entire width of the concave groove is formed, and the leading end portion of the cut inner protrusion 100 and both width edges are formed. However, the strength of the inward projection 100 is set sufficiently large by welding to the reinforcing ribs 36 on both sides as required.

  The torque rod brackets 92 and 98 as the third and fourth embodiments are also preferably positioned at the lowest position at the rear end portions of the inward projections 94 and 100 formed by cutting and raising. Further, it is desirable that the position of the lowermost point: a is positioned below the lower end of the bolt head of the fixing bolt (52) attached to the rear plate portion 14 of the torque rod bracket.

  Further, FIGS. 11 to 13 show a torque rod bracket 104 as a fifth embodiment of the present invention. The torque rod bracket 104 is provided with a lid portion 106 for a downward opening portion of the connecting plate portion 16 having a downward concave groove shape, and the concave groove opening is covered.

  The lid portion 106 is integrally formed with one reinforcing rib 36, and the reinforcing rib 36 is bent at a substantially right angle toward the other reinforcing rib 36, and the tip edge portion of the other reinforcing rib 36 is formed. The structure is superposed on the protruding tip surface. In particular, in the present embodiment, the cover portion 106 is formed so as to be substantially the entire length of the connecting plate portion 16, and the downward opening is covered with the cover portion 106 in substantially the entire groove.

  The outer surface 108 of the lid portion 106 is an inclined guide surface that is gradually inclined downward from the front to the rear along the connecting plate portion 16. Further, the outer surface 108 serving as the inclined guide surface has a lowermost end position: a at the rear end thereof: a lower end of the bolt head of the fixing bolt (52) attached to the rear plate portion 14 of the torque rod bracket 104. It is desirable to be able to be positioned below.

  Therefore, in the torque rod bracket 104 having such a structure, even when an obstacle, stone, or the like smaller than the distance between the opposed surfaces of the pair of reinforcing ribs 36, 36 approaches from the front of the vehicle toward the connecting plate portion, The presence of the lid portion 106 not only prevents entry into the recessed groove, but also guides the rear side of the lid portion 106 obliquely downward and prevents the fixing bolt (52) from contacting the head. Contact can be more effectively avoided. Moreover, in this embodiment, there exists an advantage that this cover part 106 can be integrally formed in the torque rod bracket 104 by press molding etc., without requiring another member.

  As mentioned above, although embodiment of this invention was explained in full detail, these are illustration to the last, and this invention is not interpreted at all by the concrete description in this embodiment at all. In addition, the present invention can be implemented in a mode in which various changes, corrections, improvements, and the like are added based on the knowledge of those skilled in the art, and unless such embodiments depart from the spirit of the present invention, However, it goes without saying that these are included within the scope of the present invention.

  For example, as shown in FIG. 14, in the torque rod bracket 10, the rear end portions of the reinforcing ribs 36, 36 of the connecting plate portion 16 are connected to the reinforcing ribs 40, 40 of the rear plate portion 14. The extending protrusions 110 and 110 may be integrally formed by extending in the inclination direction of the connecting plate portion 16. By forming such extended projecting portions 110 and 110, as described above, they are guided rearward along the projecting tip surfaces of the pair of reinforcing ribs 36 and 36 inclined obliquely downward at a predetermined angle: α. When the abutting object 85 is relatively displaced so that it jumps obliquely downward at the connecting portion of the connecting plate portion 16 and the rear plate portion 14 due to the relative motion inertia of the traveling vehicle and the abutting object 85. As a result, the jumping to a larger diagonally downward direction can more effectively prevent the fixing bolt 52 attached to the rear plate portion 14 from striking against the bolt head 53.

  Further, the reinforcing ribs 32, 32, 40, 40 in the front plate portion 12 and the rear plate portion 14 are not essential in the present invention. Furthermore, even if the reinforcing ribs 40, 40 are provided on the rear plate portion 14, the rear portions of the reinforcing ribs 40, 40 are cut out by a predetermined length as shown in FIG. 15, for example. Alternatively, the bolt head 53 of the fixing bolt 52 may be exposed in a side view. If such a cutout shape of the reinforcing ribs 40 is employed, the contact of the abutting object in the horizontal direction from the front of the vehicle with respect to the fixing bolt 52 is a pair of reinforcing ribs 36 covering both sides of the front portion of the fixing bolt 52. , 36, 40, and 40, while a work area such as a socket wrench on the rear plate portion 14 can be efficiently secured, and workability such as attachment / detachment of the fixing bolt 52 can be improved. is there. Note that it is impossible to deny that the bolt head 53 exposed rearward from the pair of reinforcing ribs 40, 40 may hit the abutting object 85 over the reinforcing ribs 40, 40 from below, but from below. Since the strength of the bolt head 53 is sufficiently large with respect to the external force exerted, damage does not become a problem.

  Furthermore, the distance between the opposing surfaces of the pair of reinforcing ribs 36 in the connecting plate portion 16 may be smaller than the outer diameter of the bolt head 53 of the rear fixing bolt 52 over the entire length, and is not necessarily over the entire length. Thus, it is not necessary to form the same opposing surface distance. For example, as shown in FIG. 16, the reinforcing ribs 36 are partially disposed in the opposing direction in order to avoid buffering to other members, for example, due to the layout of other members in the space where the torque rod bracket 10 is disposed. Alternatively, the curved portion 112 may be provided on the reinforcing rib 36.

  In addition, in FIGS. 14 to 16 described above, in order to facilitate understanding thereof, parts and members having the same structure as those of the first embodiment are respectively illustrated in the drawings. The same reference numerals as those in the form are attached.

It is a longitudinal cross-sectional view which shows the attachment structure of the torque rod as one Embodiment of this invention. It is a side view of the torque rod bracket employ | adopted as the attachment structure of the torque rod shown by FIG. FIG. 3 is a bottom view of the torque rod bracket shown in FIG. 2. It is a vector explanatory drawing showing the external force made to act on a torque rod bracket when a contact | abutting object strikes against the structure for attachment of the torque rod shown in FIG. It is a longitudinal cross-sectional view which shows the torque rod bracket as 2nd embodiment of this invention. FIG. 6 is a bottom view of the torque rod bracket shown in FIG. 5. It is a side view which shows the torque rod bracket as 3rd embodiment of this invention. FIG. 8 is a bottom view of the torque rod bracket shown in FIG. 7. It is a longitudinal cross-sectional view which shows the torque rod bracket as 4th embodiment of this invention. FIG. 10 is a bottom view of the torque rod bracket shown in FIG. 9. It is a side view which shows the torque rod bracket as 5th embodiment of this invention. FIG. 12 is a bottom view of the torque rod bracket shown in FIG. 11. It is XIII-XIII sectional drawing in FIG. It is a principal part side view which shows another specific example of the torque rod bracket employ | adopted in the attachment structure of the torque rod shown by FIG. FIG. 7 is a side view of a main part showing still another specific example of a torque rod bracket employed in the torque rod mounting structure shown in FIG. 1. It is a bottom view which shows another specific example of the torque rod bracket employ | adopted in the attachment structure of the torque rod shown by FIG.

Explanation of symbols

2 Power unit 6 Torque rod 8 Anti-vibration bush 10 Torque rod bracket 12 Front plate portion 14 Back plate portion 16 Connection plate portion 36 Reinforcement rib 52 Fixing bolt 64 Inner cylinder fitting 66 Outer cylinder fitting 68 Main rubber elastic body 85 Contact object

Claims (9)

An anti-vibration bush in which the inner cylinder fitting and outer cylinder fitting are connected by a rubber elastic body is disposed so that the central axis extends substantially vertically downward from the lower surface of the power unit, and a torque rod bracket fixed to the power unit is provided Extending and overlapping the lower end surface in the axial direction of the inner cylinder fitting in the anti-vibration bush, the torque rod bracket and a fixing bolt inserted through the inner cylinder fitting are screwed to the power unit, and the inner cylinder fitting is attached to the power unit. While tightening and fixing between the torque rod bracket and the power unit, one end of the torque rod that connects the power unit to the vehicle body is fixed to the outer cylinder fitting of the vibration-isolating bushing. A torque rod mounting structure having one end attached to the power unit via the vibration-proof bushing,
As the torque rod bracket, one in which a front fixing plate portion and a rear fixing plate portion are integrally formed at both ends in a longitudinal direction of a connecting plate portion extending in a substantially linear shape with a predetermined length is used. The power supply unit is fixed to the bottom lower surface of the power unit, and the connecting plate portion is arranged so as to gradually extend downward from the front fixing plate portion toward the rear of the vehicle, and a bolt insertion hole is provided in the rear fixing plate portion. The rear fixing plate portion is overlapped with the lower end surface of the inner cylinder fitting in the vibration-isolating bushing, the fixing bolt is inserted into the bolt insertion hole, and the bolt head is brought into contact with the lower surface of the rear fixing plate portion. On the other hand, by integrally forming reinforcing ribs that protrude downward and extend continuously over the entire length at both edges in the width direction of the connecting plate portion, the connecting plate portion is generally substantially downward. Concave As a shape, the distance between the opposing surfaces in the width direction of the reinforcing ribs is made smaller than the width dimension of the bolt head of the fixing bolt, and the reinforcing ribs are extended to the rear fixing plate portion to A torque rod mounting structure characterized by protruding downward from the head.   In the connecting plate portion of the torque rod bracket having a substantially concave groove shape, an inward protrusion protruding toward the inside of the concave groove is formed, and the inward protrusion causes the inside of the concave groove to be rearward. The torque rod mounting structure according to claim 1, wherein an inner inclined surface that rises from the upper bottom portion of the concave groove toward the lower opening portion as it goes is formed.   2. The torque rod mounting structure according to claim 1, wherein the connecting plate portion having a substantially concave groove shape of the torque rod bracket is provided with a lid portion that covers a downward opening thereof.   In the torque rod bracket, the rear fixing plate portion is formed so as to be bent on one surface side with respect to the connecting plate portion, and the rear fixing plate portion is substantially horizontal when the torque rod bracket is assembled. The mounting structure of the torque rod according to any one of claims 1 to 3, wherein the torque rod is disposed so as to spread.   The torque rod bracket is a state in which the connecting plate portion extends in the vehicle front-rear direction and has an inclination angle of 45 degrees or less with respect to a horizontal plane and gradually inclines downward from the front fixing plate portion toward the rear fixing plate portion. The mounting structure of the torque rod according to any one of claims 1 to 4, wherein the torque rod is assembled.   In the torque rod bracket, the rear fixing plate portion is formed in a flat plate shape wider than the connecting plate portion, and the width direction side edges of the rear fixing plate portion are also continuously connected from the connecting plate portion. 6. The torque rod mounting structure according to claim 1, wherein the reinforcing ribs are integrally formed over the entire length so as to extend.   The connecting portion of the rear fixing plate portion with respect to the connecting plate portion is formed into a widened plate shape in which the width dimension gradually increases from the connecting plate portion toward the rear fixing plate portion, and both edges in the width direction of the connecting portion. The torque rod mounting structure according to claim 6, wherein the reinforcing ribs are also integrally formed with each portion.   2. The torque rod bracket according to claim 1, wherein the front fixing plate portion has a flat plate shape and a bolt insertion hole is formed therein, and the front fixing plate portion is overlapped with a lower surface of the power unit and fixed with bolts. 8. A torque rod mounting structure according to any one of claims 7 to 7. An anti-vibration bush in which the inner cylinder fitting and the outer cylinder fitting are connected by a rubber elastic body is disposed so that its central axis extends substantially vertically downward from the lower surface of the power unit. While fixing to the power unit, one end of the torque rod is fixed to the power unit via the vibration isolating bush by fixing one end of the torque rod to the outer tube fitting of the vibration isolating bush. A torque rod bracket that is employed in a torque rod mounting structure and reinforceably fixes the inner cylindrical fitting of the vibration-proof bushing to the power unit,
A connecting plate portion extending substantially linearly with a predetermined length; and a front fixing plate portion and a rear fixing plate portion integrally formed at both ends in the longitudinal direction of the connecting plate portion, the front fixing plate portion Is fixed to the lower surface of the bottom portion of the power unit, and the connecting plate portion is disposed in a state of extending gradually downwardly downward from the front fixing plate portion toward the rear of the vehicle. Further, the rear fixing plate portion is superposed on the lower end surface of the inner cylinder fitting in the vibration-proof bushing, and a bolt insertion hole is provided in the rear fixing plate portion. A fixing bolt inserted into the bolt insertion hole of the fixing plate portion is inserted into the inner cylindrical metal fitting in the vibration-proof bushing and screwed to the lower surface of the power unit so that it is superimposed on the lower surface of the rear fixing plate portion. The solid The inner cylinder fitting can be fastened and fixed between the bolt head portion of the bolt and the power unit, and the reinforcement protrudes downward at both edges in the width direction of the connecting plate portion. Ribs are formed continuously over the entire length of the connecting plate portion at a distance between opposing surfaces that is smaller than the width of the head of the fixing bolt that is fastened and fixed to the rear fixing portion, and A torque rod bracket, wherein a reinforcing rib extends continuously to at least the rear fixing portion and protrudes downward from the head of the fixing bolt.

Images