JP4810891B2 - Torque rod mounting structure - Google Patents

Description

  The present invention relates to a torque rod mounting structure for suppressing swinging of a power unit in the roll direction.

Conventionally, a power train composed of an engine and a transmission is elastically supported on a vehicle body via a rubber insulator, and as described in Patent Document 1, a shaft is horizontally disposed in the vehicle longitudinal direction in order to suppress swinging in the engine roll direction. Is supported through a torque rod facing the.
Here, in a vehicle in which the power train is mounted laterally with respect to the traveling direction of the vehicle, around the inertia main shaft (roll shaft) extending in the vehicle width direction by the tire reaction force when the vehicle is driven, in the direction opposite to the tire rotation direction As the power train swings, the position of the differential gear located at the torque output part from the transmission is offset in the vehicle width direction from the center part in the vehicle width direction. The roll shaft swings up and down around the inertia main shaft, and the engine side tends to swing upward. When the engine generates a large torque, such as when suddenly starting, the vertical swing of the power train becomes noticeable. That is, a large vertical level difference occurs between the left and right (vehicle width direction) due to the difference in the length of the left and right drive shafts. Causes torque steer.

However, in the past, by setting the torque rod shaft horizontally in the vehicle longitudinal direction, vibration around the roll shaft extending in the vehicle width direction is effectively suppressed, but when the shaft is horizontal Since the spring characteristic with respect to the vertical displacement is small, the action of suppressing the vertical swing is small.
Further, if the rigidity of the rubber insulator supporting the power train is increased to suppress the vertical displacement, the sound vibration performance is sacrificed.

As a conventional technique corresponding to this, there is one described in Patent Document 2. In the technology disclosed in this publication, in order to reduce the torque steer associated with the engine roll, an actuator that expands and contracts when air is taken in and out of the engine support portion (rubber insulator) is arranged to reduce the engine roll. Adopted.
JP-A-8-332858 (reference numeral 12 in FIG. 2) Japanese Patent Laying-Open No. 2004-243814 (FIG. 1 and paragraph number 0006)

However, in the above prior art, as a result of preventing the above described swinging by an engine mount (rubber insulator) interposing an actuator with respect to the torque steer, the above-described actuator is separately required, and the existence of a power source or the like is considered. As a result, it is expected that it will be difficult to apply in terms of layout.
This invention is made paying attention to the above points, and makes it a subject to suppress roll steer with a simple structure.

In order to solve the above-described problems, the present invention provides a torque that extends in the vehicle front-rear direction, has one end attached to the power train and the other end attached to the vehicle body, and suppresses swinging of the power train. In the rod mounting structure,
The torque rod, the front end with rearward end portion after the car both front is attached to the drive train is mounted on the vehicle body in a side view, a front end portion of the rear end is, principal axes of inertia of the power train in the vertical direction The axis of the torque rod is inclined up and down with respect to the horizontal axis so as to be offset to the side.
And, for example, the power train side mounting portion of the torque rod includes an outer cylinder fixed to the rod main body with the shaft directed up and down, an inner cylinder arranged on the inner diameter side thereof and connected to the power train, and an outer cylinder And an elastic body inserted between the inner cylinder and at least one of a portion located on the power train side from the inner cylinder and a portion located on the side opposite to the power train side from the inner cylinder The elastic body is separated into upper and lower parts with a predetermined boundary surface as a boundary. In the axial direction of the torque rod, the upper elastic body of the separated elastic body is fixed to the outer cylinder, and the lower elastic body is It is fixed to the tube.

  According to the present invention, torque steer can be effectively suppressed with a simple structure.

Next, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a diagram illustrating a power train 1 according to the present embodiment as viewed from the rear of the vehicle. In the present embodiment, the case where the power train 1 is placed horizontally in the front engine room is illustrated.
The power train 1 includes an engine 2 and a transmission 3, and driving force is transmitted to the left and right wheels via a differential gear provided at an extraction portion of the transmission 3.

As shown in FIG. 2 which is a plan view and FIG. 3 which is a side view seen from the transmission 3 side, the power train 1 is attached to the vehicle body at four points in the vehicle width direction and two points in the vehicle front-rear direction. On the other hand, it is elastically supported via a rubber insulator 4.
Furthermore, a torque rod is provided that suppresses engine roll swinging about the roll axis X extending in the vehicle width direction when suddenly starting. In the present embodiment, the torque rods 5 and 6 are provided as a pair of two on the front and rear direction front side in the vehicle width direction end of the engine 2 on the opposite side away from the differential gear.

  The two upper and lower torque rods 5, 6 both have a rear end connected to the power train 1 and extend forward in the vehicle front-rear direction and a front end connected to the vehicle body in plan view. However, both the torque rods 5 and 6 are arranged such that the axis of the rod is tilted in the vertical direction as shown in FIG. 3 as viewed from the side, and the vehicle body side mounting portion is the engine side mounting portion in the vertical direction. It is arranged offset so as to be closer to the inertial main shaft than the (power train side mounting portion).

That is, the upper torque rod 5 attached to the upper side of the roll axis X of the power train 1 (inertial main shaft extending in the vehicle width direction) is positioned so that the engine side attachment point is located above the vehicle body side attachment point. It is set to be inclined up and down with respect to the vehicle horizontal direction.
Further, the lower torque rod 6 attached below the roll axis X of the power train 1 has an engine side attachment point set near the lower end of the engine 2 and in front of the vehicle longitudinal direction, and the engine side attachment point is It is set so as to be tilted up and down with respect to the vehicle horizontal direction so as to be located below the attachment point on the vehicle body side.

Here, each torque rod 5, 6 is composed of a rod-shaped rod main body and bush portions provided at both ends of the rod main body, as in the prior art, and each bush portion is attached to the vehicle body side and the engine side, respectively. As a result, the engine 2 is elastically supported. The bush portion is configured by an elastic body interposed between an inner cylinder and an outer cylinder.
Next, operations and effects when the torque rod mounting structure having the above-described configuration is employed will be described.

  The horizontal power train 1 swings in the roll direction in which the engine 2 vibrates around the inertia main shaft extending in the vehicle width direction. When the engine 2 generates a large output at a sudden start or the like, rocking in the roll direction (around the inertia main axis (roll axis X) in the vehicle width direction) in the power train 1 is remarkable due to the reaction force from the tire. Thus, as shown in FIG. 4, swinging around the roll axis X occurs in the direction opposite to the tire rotation direction due to the reaction force of the driving torque. At this time, since the differential gear is offset in the left-right direction from the center in the vehicle width direction, the power train 1 tends to swing around the inertia main axis Y in the vehicle front-rear direction in conjunction with the roll swing. Become. In other words, the roll shaft X is disposed on the vehicle so that the differential gear side is displaced downward and the side away from the differential gear, that is, the engine side is displaced upward due to the left / right difference between the lengths of the left and right drive shafts connected to the differential gear. A behavior that swings back and forth occurs.

  At this time, considering the upper torque rod 5, as shown in FIG. 4, the engine-side attachment portion tends to be displaced upward and rearward of the vehicle by the roll swinging, so that the upper torque rod 5 is pulled. Although the force is input, since the axis of the torque rod 5 is inclined so that the front side is the lower side, the pulling force F is a force FL toward the front in the vehicle longitudinal direction when viewed from the engine side attachment point. And acting as a component of two forces, a downward force FH, and the roll swing is suppressed by the force FL forward in the front-rear direction of the vehicle, and as shown in FIG. The displacement in the direction in which the engine 2 is lifted is suppressed, and the roll shaft X is prevented from swinging in the vertical direction.

  Considering the lower torque rod 6, as shown in FIG. 5, the engine-side attachment point tends to be displaced upward and forward of the vehicle by the above-described roll swinging. Although the compression force F is input, the axis of the torque rod 6 is inclined so that the front side is on the upper side. Therefore, the compression force F is directed rearward in the vehicle longitudinal direction when viewed from the engine side attachment point. It acts as a component of two forces, a force FL and a downward force FH, and the roll swing is suppressed by the forward force FL in the vehicle front-rear direction and the downward component force as shown in FIG. 5B. The displacement in the direction in which the engine side is lifted by FH is suppressed, and the roll shaft X is prevented from swinging in the vertical direction.

As described above, in the present embodiment, by devising the arrangement of the torque rod, the roll swing generated in the power train 1 is suppressed, and the power train 1 swings around the inertia main shaft in the vehicle front-rear direction. The engine side is also prevented from swinging upward.
Here, in the above-described embodiment, the two upper and lower torque rods 5 and 6 are inclined together to suppress the swinging around the inertia main shaft in the vehicle longitudinal direction (the vertical displacement on the engine side). Only one torque rod may be inclined to suppress upward displacement on the engine 2 side. Further, only one upper or lower torque rod may be provided, or three or more torque rods may be provided.

  In addition, when the roll swing of the engine 2 is suppressed by one torque rod, it is necessary to increase the rigidity of the bush of the mounting portion, but it is supported by the two torque rods 5 and 6. Then, the rigidity of each torque rod 5 and 6 can be set low accordingly. That is, the spring constant per torque rod can be lowered without impairing the reduction effect, which is advantageous in terms of sound vibration.

Further, when the torque rods 5 and 6 are arranged so as to form a pair at the top and bottom, there is an effect that the design for suppressing the swinging of the roll axis X in the vertical direction and the front-rear direction becomes easy.
Moreover, although the case where the power train 1 is placed horizontally is illustrated in the above embodiment, the present invention is applicable even when the power train 1 is placed vertically. Even in the case of vertical installation, if the output part of the transmission 3 is deviated from the central part in the vehicle width direction, torque steer is generated. By adopting the torque rod mounting structure of this embodiment, torque Swing in the vertical direction of the roll axis X extending in the vehicle width direction due to the steering can be suppressed to a small level. Even in the case of vertical installation, the torque rod is arranged so as to extend downward in the front of the vehicle.

Next, a second embodiment will be described with reference to the drawings. In addition, about the components similar to the said embodiment, the same code | symbol is attached | subjected and demonstrated.
This embodiment is the same as the first embodiment in setting the inclination of each torque rod, but specifies the structure of the engine-side bush among the bush portions provided at both ends of the torque rod.

First, the torque rod employed in the upper torque rod 5 to which a tensile force is mainly input will be described.
FIG. 6 is a plan view of the torque rod according to the first embodiment, and FIG. 7 is a side view thereof.
The bushes constituting the vehicle body side attachment portion A and the engine side attachment portion B have the same basic structure, and between the outer cylinders 10 and 14 fixed to the rod body 19 and the inner cylinders 11 and 13 attached to the counterpart side, An elastic body 12, 20-22 made of rubber or the like is interposed. However, in the present embodiment, the engine-side mounting portion B has a larger diameter than the vehicle body-side mounting portion A from the viewpoint of vibration isolation. Each of the following embodiments is characterized by the arrangement and structure of the elastic body of the engine side mounting portion B.

(Example 1)
The configuration will be described based on FIG. 6 and FIG.
The engine side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is inserted from the position of the inner cylinder 13 to the engine side portion. The elastic body 20 positioned on the left and right of the inner cylinder 13 in the vehicle width direction is fixed to the inner cylinder 13 and the outer cylinder 14 to connect the both 13 and 14 together. Further, the elastic body portion located on the engine side with respect to the inner cylinder 13 is separated into two parts, an upper elastic body 21 and a lower elastic body 22, with a predetermined plane as a boundary, and the upper elastic body 21 is separated from the outer cylinder 14. The lower elastic body 22 is fixed to the outer peripheral surface of the inner cylinder 13. Further, the separation surfaces (the lower surface 21a of the upper elastic body 21 and the upper surface 22a of the lower elastic body 22) do not have to be flat surfaces, and may be curved surfaces or may be inclined. In short, it is only necessary that the lower surface 21a of the upper elastic body 21 and the upper surface 22a of the lower elastic body 22 are vertically opposed and abutable. In FIG. 7,
There is a gap between the upper elastic body 21 and the lower elastic body 22, but it may be omitted.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the upper torque rod 5, the inner cylinder 13 fixed to the engine 2 is relatively upward and rearward in the engine side mounting portion B as the engine 2 rolls. By displacing, the outer cylinder 14 side is pulled obliquely downward toward the vehicle front side, the engine side portion is compressed in the vehicle front-rear direction relative to the inner cylinder 13, and the upper elastic body 21 and the lower elastic body 22 are compressed. And abut. At this time, the lower elastic body 22 fixed to the inner cylinder 13 tends to move relatively upward, but the upper elastic body 21 fixed to the outer cylinder 14 is displaced downward so that the upper elastic body 22 is moved upward. A downward force is input from the lower surface of the elastic body 21 to the upper surface of the lower elastic body 22. As a result, it becomes possible to efficiently use the downward component of the vehicle vertical direction among the forces acting in the direction of the torque rod when the engine roll is swung.

  That is, the use of the elastic body structure is advantageous in terms of sound vibration because the downward component force is increased and the rigidity of the engine-side elastic body can be reduced accordingly. Further, this torque rod is effective as the torque rod of the first embodiment, but since the component force downward can be effectively generated by devising the bush, the torque rod axis line is correspondingly increased. In some cases, the vertical inclination can be reduced, or in some cases, the vertical inclination can be set to zero as in the prior art. The same applies to the case where the following bush structure is adopted.

(Example 2)
FIG. 8 is a plan view showing a torque rod of Example 2, and FIG. 9 is a side view thereof.
The engine side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is inserted from the position of the inner cylinder 13 to the engine side portion. The elastic body 20 located on the left and right of the inner cylinder 13 in the vehicle width direction is fixed to the inner cylinder 13 and the outer cylinder 14 to connect the both 13 and 14 together. The elastic body portion located on the engine side with respect to the inner cylinder 13 is separated into an inner cylinder side elastic body 24 and an outer cylinder side elastic body 23 with a boundary surface 25 extending in the vertical direction as a boundary.
As shown in FIG. 9, the boundary surface 25 includes an inclined surface that inclines from the front side in the vehicle front-rear direction toward the rear side in the side view. In addition, this inclined surface should just be in a part of boundary surface. The same applies to the following embodiments.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the upper torque rod 5, the inner cylinder 13 fixed to the engine 2 is displaced relative to the upper side and the rear side of the vehicle at the engine side mounting portion B as the engine 2 rolls. Thus, the outer cylinder 14 side is pulled obliquely downward toward the vehicle front side, and the outer cylinder side elastic body 23 and the inner cylinder side elastic body 24 come into contact with each other. At this time, the inner cylinder side elastic body 24 fixed to the inner cylinder 13 tends to move relatively upward, but the outer cylinder side elastic body 23 fixed to the outer cylinder 14 is displaced downward. suppress. At this time, the outer cylinder side elastic body 23 in contact with the inner cylinder side elastic body is formed by inclining the boundary surface from the front side in the vehicle front-rear direction toward the rear side as it goes downward in a side view. As a result of restraining 24 downward, the component force downward by the elastic body is increased. That is, by adopting the configuration of the elastic body, it becomes possible to efficiently use the downward component force of the force acting in the torque rod axis direction when the engine roll swings in the vehicle vertical direction.

(Example 3)
FIG. 10 is a plan view showing a torque rod of Example 3 , and FIG. 11 is a side view thereof.
The engine-side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is interposed between the inner cylinder 13 and the outer cylinder 14. The configuration of the elastic body may be a configuration as in the first embodiment or the second embodiment, or may be another known configuration. 10 and 11, the inner cylinder 13 and the outer cylinder 14 are connected via the elastic body 20 on the left and right of the inner cylinder 13 in the vehicle width direction. The case where the elastic body 26 is provided only on 14 inner peripheral surfaces is illustrated.

  The inner cylinder 13 has at least a lower end projecting downward in the axial direction from the outer cylinder 14 and a stopper member 27 formed of an outward flange at the lower end of the inner cylinder 13. The stopper member 27 may be at least vertically opposed to the lower end surface of the outer cylinder 14 located on the side opposite to the engine 2 with respect to the outer cylinder 14. That is, the flange on the engine side is not necessary.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the upper torque rod 5, the inner cylinder 13 fixed to the engine 2 is displaced relative to the upper side and the rear side of the vehicle at the engine side mounting portion B as the engine 2 rolls. By doing so, the outer cylinder 14 side is pulled obliquely downward toward the vehicle front side, and the outer elastic body provided on the engine side contacts the inner cylinder 13. In addition, the outer cylinder 14 tends to move relatively obliquely downward with respect to the inner cylinder 13, but the lower end portion of the outer cylinder 14 away from the engine side comes into contact with the stopper member 27 from above, and the stopper member 27 Is pushed downward, a downward force is input to the upper end of the engine 2 connected to the inner cylinder 13. That is, by adopting such a configuration of the torque rod, it is possible to efficiently use the downward component of the vehicle vertical direction of the force acting in the torque rod axis direction when the engine roll is swung.

  The elastic member 28 is attached to the upper surface of the stopper member 27 (the surface facing the outer cylinder 14) or the lower end surface of the outer cylinder 14, and the sound when the stopper member 27 contacts the lower end surface of the outer cylinder 14 It is preferable to suppress vibration. Further, the upper surface of the stopper member 27 and the lower surface of the outer cylinder 14 may be connected by an elastic body.

Example 4
All of the above-described Examples 1 to 3 exemplify torque rods suitable for application to the upper torque rod 5 to which a tensile force is mainly input, but Examples 4 to 6 are mainly compressed. A torque rod suitable for application to the lower torque rod 6 to which force is input will be exemplified.
FIG. 12 is a plan view of the fourth embodiment, and FIG. 13 is a side view thereof.

  The engine side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is inserted from the position of the inner cylinder 13 to the opposite side of the engine 2, and the inner cylinder The elastic bodies 20 positioned on the left and right sides in the vehicle width direction 13 are fixed to the inner cylinder 13 and the outer cylinder 14 and connect the both 13 and 14 together. Further, the elastic body portion located on the side opposite to the engine 2 with respect to the inner cylinder 13 is separated into two parts, an upper elastic body 31 and a lower elastic body 32, and the upper elastic body 31 is the inner peripheral surface of the outer cylinder 14. The lower elastic body 32 is fixed to the outer peripheral surface of the inner cylinder 13. Further, the separation surface does not have to be a flat surface and may be a phase. In short, it is only necessary that the lower surface 31a of the upper elastic body 31 and the upper surface 32a of the lower elastic body 32 can be opposed vertically.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the lower torque rod 6, the inner cylinder 13 fixed to the engine 2 is relatively located on the upper side and the vehicle front side in the engine side mounting portion B as the engine 2 rolls. Is displaced in the longitudinal direction of the vehicle, the upper elastic body 31 and the lower elastic body 32 come into contact with each other, and a compression force is input to the rod. The At this time, the lower elastic body 32 fixed to the inner cylinder 13 tends to move relatively upward, but the upper elastic body 31 fixed to the outer cylinder 14 is located above the lower elastic body 32. The downward force is input from the lower surface of the upper elastic body 31 to the upper surface of the lower elastic body 32. As a result, it becomes possible to efficiently use the downward component force of the force acting in the torque rod axis direction when the engine roll swings in the vehicle vertical direction.

(Example 5)
FIG. 14 is a plan view of the fifth embodiment, and FIG. 15 is a side view thereof.
The engine-side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is inserted from the position of the inner cylinder 13 to a portion opposite to the engine. The elastic body 20 located on the left and right of the inner cylinder 13 in the vehicle width direction is fixed to the inner cylinder 13 and the outer cylinder 14 to connect the both 13 and 14 together. Further, the elastic body portion located on the side opposite to the engine 2 with respect to the inner cylinder 13 is separated into an inner cylinder side elastic body 34 and an outer cylinder side elastic body 33 with a boundary surface extending vertically.
As shown in FIG. 15, the boundary surface includes an inclined surface that inclines from the rear side in the vehicle front-rear direction toward the front side in the side view.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the lower torque rod 6, the inner cylinder 13 fixed to the engine 2 is relatively located on the upper side and the vehicle front side in the engine side mounting portion B as the engine 2 rolls. The inner cylinder side elastic body 34 abuts on the outer cylinder side elastic body 33 in a direction obliquely upward toward the vehicle front side, but the boundary surface is a lower side in a side view. Since the outer cylinder side elastic body 33 suppresses the upward movement of the inner cylinder side elastic body 34, the outer cylinder side elastic body 33 is inclined from the rear side in the vehicle front-rear direction toward the front side. A force directed downward from 33 toward the inner cylinder side elastic body 34 is input. As a result, the downward component force by the elastic body is increased. That is, by employing the configuration of the elastic body, so that the vehicle vertical direction downward component force of the force acting on the torque rod axis when the roll oscillation of the engine 2 can be efficiently utilized.

(Example 6)
FIG. 16 is a plan view of the sixth embodiment, and FIG. 17 is a side view thereof.
The engine-side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is interposed between the inner cylinder 13 and the outer cylinder 14. The configuration of the elastic body may be a configuration as in the fourth embodiment or the fifth embodiment, or may be another known configuration. 16 and 17, the inner cylinder 13 and the outer cylinder 14 are connected via the elastic body 20 on the left and right in the vehicle width direction of the inner cylinder 13, and the portion on the opposite side of the engine 2 from the inner cylinder 13. The case where the elastic body 36 which fixes only to the inner peripheral surface of the outer cylinder 14 is provided is illustrated.

  At least the lower side of the inner cylinder 13 protrudes upward, and a stopper member 27 made of an outward flange is provided at the lower end of the inner cylinder 13. This stopper member 27 only needs to face at least the lower end surface of the outer cylinder 14 positioned on the side opposite to the engine 2 with respect to the outer cylinder 14 (that is, the flange on the engine side portion is unnecessary). The stopper member 27 has the same structure as that of the third embodiment.

Next, functions and effects of the torque rod will be described.
When the torque rod having the above configuration is used as the lower torque rod 6, the inner cylinder 13 fixed to the engine 2 is relatively located on the upper side and the vehicle front side in the engine side mounting portion B as the engine 2 rolls. As a result, the inner cylinder 13 comes into contact with the elastic body 36 also received on the opposite side of the engine 2 and the inner cylinder 13 is displaced in a direction in which the axis of the inner cylinder 13 is inclined to the engine side with respect to the outer cylinder 14. To do. As the inner cylinder 13 is inclined with respect to the outer cylinder 14 in this way, the stopper member 27 provided on the lower side of the inner cylinder 13 comes into contact with the lower end portion of the outer cylinder 14 away from the engine side from the lower side. Thus, a downward force from the outer cylinder 14 is input as a reaction force. As a result, by adopting such a configuration of the torque rod, it is possible to efficiently use the downward component of the vehicle vertical direction of the force acting in the torque rod axis direction when the engine roll is swung.
The elastic member 28 is attached to the upper surface of the stopper member 27 (the surface facing the outer cylinder 14) or the lower end surface of the outer cylinder 14, and the sound when the stopper member 27 contacts the lower end surface of the outer cylinder 14 It is preferable to suppress vibration. Further, the upper surface of the stopper member 27 and the lower surface of the outer cylinder 14 may be connected by an elastic body.

(Example 7)
The seventh to ninth embodiments are examples of torque rods that can be applied to both the upper rod and the lower rod, and an example in which the configuration patterns of the first to third embodiments and the fourth to sixth embodiments are combined. It is. Of course, it is not limited to the following combination pattern.
FIG. 18 is a plan view of the seventh embodiment, and FIG. 19 is a side view thereof.
In the seventh embodiment, both the configuration patterns of the first embodiment and the fourth embodiment are applied.
That is, the engine-side mounting portion B is an elastic body 20 that is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and is located on the left and right in the vehicle width direction at the position of the inner cylinder 13. Both 13 and 14 of the cylinder 14 are connected.

Further, the elastic body portion located on the engine side with respect to the inner cylinder 13 is separated into two parts, an upper elastic body 21 and a lower elastic body 22, and the upper elastic body 21 is fixed to the inner peripheral surface of the outer cylinder 14, The lower elastic body 22 is fixed to the outer peripheral surface of the inner cylinder 13. Further, the elastic body portion located on the opposite side of the engine 2 from the inner cylinder 13 is also separated into two parts, an upper elastic body 31 and a lower elastic body 32, so that the upper elastic body 31 is the inner peripheral surface of the outer cylinder 14. The lower elastic body 32 is fixed to the outer peripheral surface of the inner cylinder 13. The separation surfaces divided into upper and lower parts do not have to be planes, and may be aspects. In short, it is only necessary that the lower surfaces of the upper elastic bodies 21 and 31 and the upper surfaces of the lower elastic bodies 22 and 32 can be opposed vertically.
The actions and effects are the same as those in the first and fourth embodiments. One type of torque rod can be used as the upper torque rod 5 and the lower torque rod 6.

(Example 8)
FIG. 20 is a plan view of the eighth embodiment, and FIG. 21 is a side view thereof.
In the eighth embodiment, both of the configuration patterns of the second embodiment and the fifth embodiment are applied.
That is, the engine side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is inserted from the position of the inner cylinder 13 to the engine side portion. The elastic body 20 located on the left and right in the vehicle width direction is fixed to the inner cylinder 13 and the outer cylinder 14 and connects the both 13 and 14 together.

Further, the elastic body portion located on the engine side with respect to the inner cylinder 13 is separated into an inner cylinder side elastic body 24 and an outer cylinder side elastic body 23 with a boundary surface extending in the vertical direction as a boundary. The boundary surface includes an inclined surface that inclines from the front side in the vehicle front-rear direction toward the rear side in the side view.
In addition, the elastic body portion located farther from the engine 2 than the inner cylinder 13 is also separated into an inner cylinder side elastic body 34 and an outer cylinder side elastic body 33 with a boundary surface extending in the vertical direction as a boundary. The boundary surface includes an inclined surface that inclines from the rear side in the vehicle front-rear direction toward the front side in the side view.
The operations and effects of the above configuration are the same as those of the second and fifth embodiments.

Example 9
FIG. 22 is a plan view of the ninth embodiment, and FIG. 23 is a side view thereof.
Both of the configuration patterns of Example 3 and Example 6 are applied.
That is, the engine-side mounting portion B is set so that the shafts of the outer cylinder 14 and the inner cylinder 13 are up and down, and an elastic body is interposed between the inner cylinder 13 and the outer cylinder 14. The configuration of the elastic body may be a configuration as in the first embodiment or the second embodiment, or may be another known configuration. 22 and 23, the inner cylinder 13 and the outer cylinder 14 are connected via the elastic body 20 on the left and right sides of the inner cylinder 13 in the vehicle width direction, and further away from the engine side portion and the engine 2 than the inner cylinder 13. The case where the elastic bodies 26 and 36 are provided on the inner peripheral surface of the outer cylinder 14 is illustrated.

The inner cylinder 13 has at least a lower end projecting downward in the axial direction from the outer cylinder 14 and a stopper member 27 formed of an outward flange at the lower end of the inner cylinder 13. This stopper member 27 only needs to face at least the lower end surface of the outer cylinder 14 positioned on the side opposite to the engine 2 with respect to the outer cylinder 14 (that is, the flange on the engine side portion is not necessary).
The function and effect are the same as in the third and sixth embodiments.

It is a figure which shows the power train which concerns on embodiment based on this invention. It is a typical top view showing support of a power train concerning a 1st embodiment based on the present invention. It is a typical side view showing support of a power train concerning a 1st embodiment based on the present invention. It is a figure explaining the effect | action of the upper side torque rod which concerns on 1st Embodiment based on this invention. It is a figure explaining the effect | action of the upper side torque rod which concerns on 1st Embodiment based on this invention. 1 is a plan view showing a torque rod of Example 1. FIG. It is a side view which shows the torque rod of Example 1. FIG. 6 is a plan view showing a torque rod of Example 2. FIG. 6 is a side view showing a torque rod of Example 2. FIG. 6 is a plan view showing a torque rod of Example 3. FIG. 6 is a side view showing a torque rod of Example 3. FIG. 6 is a plan view showing a torque rod of Example 4. FIG. 6 is a side view showing a torque rod of Example 4. FIG. 10 is a plan view showing a torque rod of Example 5. FIG. 10 is a side view showing a torque rod of Example 5. FIG. 10 is a plan view showing a torque rod of Example 6. FIG. It is a side view which shows the torque rod of Example 6. FIG. 10 is a plan view showing a torque rod of Example 7. FIG. It is a side view which shows the torque rod of Example 7. FIG. 10 is a plan view showing a torque rod of Example 8. FIG. 10 is a side view showing a torque rod of Example 8. 10 is a plan view showing a torque rod of Example 9. FIG. It is a side view which shows the torque rod of Example 9. FIG.

Explanation of symbols

1 Powertrain 2 Engine 3 Transmission 4 Rubber insulator (positioning position)
5 Upper torque rod 6 Lower torque rod 13 Inner cylinder 14 Outer cylinder 20 Elastic bodies 21, 31 Upper elastic bodies 22, 32 Lower elastic bodies 23, 33 Outer cylinder side elastic bodies 24, 34 Inner cylinder side elastic bodies 26, 36 Elastic body 27 Stopper member 28 Elastic body X Roll shaft (Inertial main shaft extending in the vehicle width direction)
Y Inertial spindle extending in the vehicle longitudinal direction

Claims (5)

A power train composed of an engine and a transmission extends in the vehicle front-rear direction of a horizontally placed vehicle, and one end is attached to the power train and the other end is attached to the vehicle body to suppress the swing of the power train. In the torque rod mounting structure of
The torque rod has a rear end portion in the vehicle front-rear direction attached to the power train and a front end portion attached to the vehicle body side, and in front view, the front end portion is closer to the inertia main shaft side of the power train in the vertical direction than the rear end portion. The axis of the torque rod tilts up and down with respect to the horizontal axis so that it is offset,
The rear end of the torque rod is connected to the power train above the height of the inertia main shaft of the power train, and the front end of the torque rod is connected to the vehicle body at a position offset downward from the rear end,
Powertrain side mounting point of the upper Symbol torque rod, the engine, the transmission is an end portion located in the vehicle width direction opposite
The power train side mounting portion of the torque rod includes an outer cylinder that is fixed to the rod body with the shaft directed up and down, an inner cylinder that is disposed on the inner diameter side of the torque rod, and is connected to the power train. And an elastic body interposed between
The elastic body located on at least one of the portion located on the power train side from the inner cylinder and the portion located on the opposite side to the power train side from the inner cylinder is separated vertically from a predetermined boundary surface as a boundary. A torque rod mounting structure characterized in that, in the axial direction of the torque rod, the upper elastic body of the separated elastic body is fixed to the outer cylinder, and the lower elastic body is fixed to the inner cylinder . At least a part of the boundary surface of the elastic body in the power train side mounting portion of the torque rod is inclined so that the upper side is positioned on the inner cylinder side from the lower side with respect to the vertical direction. The torque rod mounting structure according to claim 1. In the torque rod mounting structure, the rear end portion is connected to the power train below the inertia main shaft of the power train, and the front end portion is connected to the vehicle body at a position offset upward from the rear end portion. 3. The torque rod mounting structure according to claim 1 , wherein the torque rod has a lower torque rod having the same configuration as that of the torque rod, and is arranged in pairs . In the mounting structure of the torque rod for extending in the vehicle front-rear direction, one end is attached to the power train and the other end is attached to the vehicle body to suppress the swing of the power train,
The torque rod has a rear end in the vehicle front-rear direction attached to the power train and a front end attached to the vehicle body.
The power train side mounting portion of the torque rod includes an outer cylinder that is fixed to the rod body with the shaft directed up and down, an inner cylinder that is disposed on the inner diameter side of the torque rod, and is connected to the power train. An elastic body interposed between the inner cylinder and the elastic body located on at least one of a part located on the power train side from the inner cylinder and a part located on the side opposite to the power train side from the inner cylinder, The upper elastic body of the separated elastic body is fixed to the outer cylinder and the lower elastic body is fixed to the inner cylinder in the axial direction of the torque rod. Torque rod mounting structure characterized by that. In the mounting structure of the torque rod for extending in the vehicle front-rear direction, one end is attached to the power train and the other end is attached to the vehicle body to suppress the swing of the power train,
The torque rod has a rear end in the vehicle front-rear direction attached to the power train and a front end attached to the vehicle body.
The power train side mounting portion of the torque rod includes an outer cylinder that is fixed to the rod body with the shaft directed up and down, an inner cylinder that is disposed on the inner diameter side of the torque rod, and is connected to the power train. An elastic body interposed between the inner cylinder and the elastic body located on at least one of a part located on the power train side from the inner cylinder and a part located on the side opposite to the power train side from the inner cylinder, Separating a first portion fixed to the inner cylinder with a predetermined boundary surface extending vertically as a boundary, and a second portion fixed to the outer cylinder, wherein at least a part of the boundary surface is perpendicular to the vertical direction. A torque rod mounting structure characterized in that the upper side of the lower side is inclined so as to be positioned on the inner cylinder side.

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