JP2007331645A - Vehicle driving unit supporting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively function a liquid filled mount of a movable plate type while suppressing the vertical input (amplitude) to the liquid filled mount of the movable plate type during idling when supporting a driving unit having an engine with an odd number of cylinders connected to a transmission in the cross direction of a vehicle body with right and left mounts and a torque rod. <P>SOLUTION: A torque roll shaft A1 serves as an axial center in the cross direction of the vehicle body when the driving unit is just rotated with the torque of a piston applied to a crank shaft of the engine 1, and an elastic roll shaft A2 serves in the cross direction of the vehicle body for giving elastic rotation to the driving unit which is elastically supported by the right and left mounts 5, 7 and the torque rod 9. The right and left mounts 5, 7 are located on the torque roll shaft A1 in a top view, whereby the torque roll shaft A1 approximately matches the elastic roll shaft A2 in a top view. The right or left mount 5 or 7 is the liquid filled mount of the movable plate type. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a structure in which a drive unit is supported in the left-right direction of a vehicle body in a drive unit in which an engine of a plurality of odd-numbered cylinders (for example, 3 cylinders or 5 cylinders) and a transmission are connected.

  For example, in a laterally mounted FF type passenger car, as disclosed in Patent Document 1, in the drive unit (1 in FIGS. 1 and 2 of Patent Document 1) in which the engine and the transmission are coupled, The upper part is supported on the vehicle body via a right mount (RH in FIGS. 1 and 2 of Patent Document 1), and the upper left part of the drive unit is supported through a left mount (LH in FIGS. 1 and 2 of Patent Document 1). The drive unit is supported in the left-right direction of the vehicle body by connecting the torque rod (Rr, 2 in FIGS. 1 and 2 of Patent Document 1) to the lower part of the drive unit and the vehicle body. There is what I did.

  In this case, it is conceivable to configure the right or left mount as a movable plate type liquid-filled mount. As disclosed in Patent Documents 2 and 3, the movable plate-type liquid-sealed mount generally includes a plurality of flow paths that connect two chambers and two chambers in which a buffer fluid is sealed in a vibration-proof rubber, and a plurality of channels. A movable plate or the like that opens and shields a part of the flow path is provided.

  Thus, if the movable plate type liquid-filled mount has a small vertical input (amplitude), the movable plate moves to the open position, and the buffer fluid in the two chambers reciprocates through all the flow paths. The vibration of the drive unit during idling can be appropriately suppressed by the movable plate type liquid-filled mount. On the other hand, if there is a large input (amplitude) in the vertical direction on the movable plate type liquid-filled mount, the movable plate moves to the shielding position and a part of the plurality of flow paths is shielded, and the buffer fluid in the two chambers flows to the remaining flow. A large vibration resistance is generated due to the reciprocation through the road, and the vibration of the drive unit during traveling is appropriately suppressed by the movable plate type liquid-filled mount.

International Publication Number WO2003 / 004297 (FIGS. 1 and 2) JP-A-6-288423 Japanese Utility Model Publication No. 6-69478

  As described above, when the drive unit is supported in the left-right direction of the vehicle body by the right and left mounts and the torque rod, the right or left mount is configured as a movable plate type liquid-filled mount, so that it can be used at both idling and running. The vibration of the drive unit can be appropriately suppressed by the movable plate type liquid-filled mount.

  However, the movable plate type liquid-filled mount functions effectively both during idling and during travel. The vertical input (amplitude) to the movable plate-type liquid sealed mount during idling and the movable plate type during travel When there is a sufficient difference between the vertical input (amplitude) to the liquid mounting mount (when the vertical input (amplitude) to the movable plate type liquid mounting mount during idling is sufficiently small) It is. This is because if the input (amplitude) in the vertical direction to the movable plate type liquid-filled mount during idling is not sufficiently small, the movable plate will move to the shielding position without being positioned in the open position during idling, This is because it will be in the same state as when traveling.

  In this case, in the engine of a plurality of even cylinders (for example, four cylinders or six cylinders), the vertical input (amplitude) to the movable plate type liquid-filled mount at idling is sufficiently small, whereas the plurality of odd cylinders In an engine of cylinders (for example, 3 cylinders or 5 cylinders), since the input (amplitude) in the vertical direction to the movable plate type liquid-filled mount at idling is relatively large, a plurality of odd cylinders (for example, 3 cylinders or Even if a movable plate type liquid-filled mount is used for a 5-cylinder engine, the movable plate type liquid-filled mount may not function effectively.

  The present invention relates to a drive unit support structure for a vehicle in which a drive unit in which a plurality of odd-numbered cylinders (for example, 3 cylinders and 5 cylinders) engines and a transmission are coupled is supported in the left-right direction of the vehicle body by right and left mounts and a torque rod. When a movable plate type liquid-filled mount is used, an object is to configure the movable plate type liquid-filled mount to function effectively.

[I]
(Constitution)
A first feature of the present invention resides in the following configuration in a drive unit support structure for a vehicle.
In a drive unit in which an engine of multiple odd cylinders and a transmission are connected, the upper right side of the drive unit is supported on the vehicle body via a right mount, and the upper left side of the drive unit is supported on the vehicle body via a left mount. A torque rod is connected across the lower part of the vehicle body and the vehicle body to support the drive unit in the vehicle body left-right direction. The drive unit is elasticized by the torque roll shaft, which is the axial center of the vehicle body when the piston unit torque is applied to the crankshaft of the engine, and the right and left mounts and the torque rod. The left and right mounts are positioned on the torque roll shaft in a plan view and elastic with the torque roll shaft in a plan view. The roll axis is configured to substantially match. The right or left mount is configured by a movable plate type liquid-filled mount.

(Function)
For example, as shown in FIGS. 8 (A) and 8 (B), when the drive unit connecting the engine 1 and the transmission 3 is supported in the left-right direction of the vehicle body (the vertical direction in FIG. 8 (A)), the crankshaft of the engine 1 When the torque of the piston is applied, the drive unit tends to vibrate (rotate) around the axis A1 in the left-right direction of the vehicle body passing through the drive unit, and this axis A1 in the left-right direction of the vehicle body is referred to as a torque roll axis A1. The torque roll shaft A1 is generally inclined with respect to the crankshaft of the engine 1, and the engine 1 side of the torque roll shaft A1 is located slightly on the front side of the vehicle body (left side of the paper in FIG. 8 (a)) in plan view. The mission axis 3 side of the roll axis A1 is located slightly on the rear side of the vehicle body (to the right of the plane of FIG. 8 (a)) (the drive unit connecting the engine 1 and the mission 3 is asymmetrical in the left-right direction and asymmetrical in the front-rear direction). by).

  In the engine 1 having a plurality of odd cylinders, when idling, for example, as shown in FIGS. 8 (A) and 8 (B), the center P1 near the center of the torque roll shaft A1 is the apex of the cone, and the engine 1 side of the drive unit is torqued. It has been recognized that an excitation force (primary couple) that tries to make a circular motion (see one locus B1) around the roll axis A1 is generated, and the center P1 near the center of the torque roll axis A1 is the apex of the cone. It is recognized that an excitation force (primary couple) is generated to cause the drive unit 3 side of the drive unit to make a circular motion (see one locus B2) with a phase shift of 180 ° around the torque roll axis A1. (Excitation force (primary couple) that the entire drive unit tries to rotate so as to draw a locus like a drum around the torque roll axis A1).

Accordingly, in the engine 1 having a plurality of odd-numbered cylinders, for example, as shown in FIGS. 8 (A) and 8 (B), when the right mount 5 ′ for supporting the right upper portion of the drive unit on the vehicle body is arranged slightly in front of the drive unit, Since the displacement S1 ′ of the excitation force (primary couple) is obliquely applied to the right mount 5 ′, the displacement of the excitation force (primary couple) is added to the right mount 5 ′ in addition to the vibrations of the engine 1 and the transmission 3. The upper and lower components S2 ′ of S1 ′ and the horizontal component S3 ′ are added (coupled).
Therefore, even when the right mount 5 ′ is configured by a movable plate-type liquid-filled mount, the idling is caused by the vibration of the engine 1 and the transmission 3 and the vertical component S2 ′ of the displacement S1 ′ of the excitation force (primary couple). , The input (amplitude) in the vertical direction to the right mount 5 ′ (movable plate type liquid-filled mount) is large (coupled), and the right mount 5 ′ (movable plate type liquid-filled mount) is idled. The vibration of the drive unit cannot be properly suppressed (the convergence of the vibration is slow).

  According to the first feature of the present invention, in a drive unit in which an engine of a plurality of odd-numbered cylinders and a transmission are connected, the right upper part of the drive unit is supported on the vehicle body via the right mount, and the left upper part of the drive unit is mounted on the left mount. And a torque rod is connected across the lower portion of the drive unit and the vehicle body to support the drive unit in the left-right direction of the vehicle body. When supported in this way, the elastic roll shaft in the left-right direction of the vehicle body that allows the drive unit to rotate elastically (vibrates) is elastically supported by the right and left mounts and the torque rod. It is determined by the arrangement of the left mount and torque rod.

In this case, according to the first feature of the present invention, for example, as shown in FIGS. 8A and 8B, the right and left mounts 5 and 7 are positioned on the torque roll axis A1 in a plan view, and the torque in the plan view. The roll axis A1 and the elastic roll axis A2 are configured to substantially coincide.
Thus, according to the first feature of the present invention, for example, as shown in FIGS. 8A and 8B, the displacement S1 of the excitation force (primary couple) is applied to the right mount 5 substantially horizontally during idling. Therefore, since the upper and lower components of the displacement S1 of the excitation force (primary couple) hardly occur, the right mount 5 is only subjected to vibrations of the engine 1 and the transmission 3 (not coupled). Thus, the input (amplitude) in the vertical direction to the right mount 5 at the time of idling is small (not coupled). This state is the same for the left mount 7.

  Therefore, as described in the first feature of the present invention, when one of the right and left mounts is constituted by a movable plate type liquid-filled mount (when both the right and left mounts are constituted by a movable plate type liquid-filled mount), When idling, the right and left mounts (movable plate type liquid-filled mounts) have small vertical input (amplitude) (not coupled), and the movable plate type liquid-filled mounts function effectively. The movable plate type liquid-filled mount appropriately suppresses the vibration of the drive unit during idling (vibration converges quickly) (the movable plate type liquid-filled mount has a small input (amplitude) in the vertical direction. Moves to the open position, the buffer fluid in the two chambers reciprocates through all the flow paths, and is driven when idling by a movable plate type liquid-filled mount The vibration of the knit is properly suppressed).

  According to the first feature of the present invention, if there is a large vertical input (amplitude) in the movable plate type liquid-filled mount during traveling, the movable plate-type liquid filled mount functions in the same way, and the movable plate type liquid-filled mount functions effectively. The vibration of the drive unit during traveling is appropriately suppressed by the enclosed mount (vibration converges quickly) (the movable plate moves to the shielding position due to large input (amplitude) in the vertical direction on the movable plate type liquid enclosed mount. As a result, some of the plurality of flow paths are shielded, and the buffer fluid in the two chambers reciprocates through the remaining flow paths, generating a large vibration resistance. The vibration of the drive unit is appropriately suppressed).

(The invention's effect)
According to the first feature of the present invention, when a drive unit in which a plurality of odd-numbered cylinder engines and transmissions are connected is supported in the left-right direction of the vehicle body by right and left mounts and torque rods, the right and left mounts are appropriately arranged. The vertical input (amplitude) to the movable plate-type liquid-filled mount during idling has been reduced (not coupled) to the movable-plate-type liquid-filled mount during idling (the vertical input to the movable plate-type liquid filled mount during idling) There was a sufficient difference between the (amplitude) and the vertical input (amplitude) to the movable plate-type liquid-filled mount during travel.

  Thus, according to the first feature of the present invention, when one of the right and left mounts is constituted by a movable plate-type liquid-filled mount (when both right and left mounts are constituted by a movable-plate-type liquid-filled mount), idling The movable plate-type liquid-filled mount functions effectively both at the time of driving and during travel, and the movable plate-type liquid-filled mount can appropriately suppress the vibration of the drive unit, thereby reducing the quietness and comfort of the vehicle. Was able to improve.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the vehicle drive unit support structure of the first feature of the present invention.
One of the right and left mounts is constituted by a movable plate type liquid-filled mount. The other of the right and left mounts is constituted by an elastic mount having an arm portion fixed to the drive unit and an anti-vibration rubber having an opening into which the arm portion is inserted. The elastic mount is configured so that the arm portion extends along the left-right direction of the vehicle body and the opening portion faces the left-right direction of the vehicle body.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
When a drive unit in which a plurality of odd-numbered cylinder engines and transmissions are connected is supported in the left-right direction of the vehicle body by right and left mounts and torque rods, as described in [1] above, a movable plate type liquid filling during idling If the vertical input (amplitude) to the mount can be made small (not coupled), it may not be necessary to configure both the right and left mounts with a movable plate-type liquid-filled mount.

  According to the second feature of the present invention, one of the right and left mounts is constituted by a movable plate type liquid-filled mount, and the other of the right and left mounts is constituted by an elastic mount. In this case, the elastic mount includes an arm portion fixed to the drive unit and an anti-vibration rubber having an opening into which the arm portion is inserted, and the arm portion extends along the left-right direction of the vehicle body. The elastic mount is configured so that the opening is directed in the left-right direction of the vehicle body.

As described in the preceding paragraph [I], an excitation force (primary couple) that causes the engine side of the drive unit to circularly move around the torque roll shaft with the center near the center of the torque roll shaft as the apex of the cone is provided. appear. Thus, when the elastic mount is configured as in the second feature of the present invention, the vibration of the drive unit (arm portion) in the vertical direction and the front-rear direction is applied to the anti-vibration rubber without waste, and the elastic mount functions effectively. become.
As a result, both the right and left mounts are not composed of a movable plate-type liquid-filled mount, but one of the right or left mount is composed of a movable-plate-type liquid-filled mount, and the other of the right or left mount is composed of an elastic mount. Even in idling and traveling, the vibration of the drive unit can be appropriately suppressed by the movable plate type liquid-filled mount and the elastic mount.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, both the right and left mounts are not constituted by movable plate-type liquid-filled mounts, but by using a relatively low-cost elastic mount effectively, it is possible to perform idling and running. In both cases, it was possible to reduce the overall cost while appropriately suppressing vibration of the drive unit.

  FIG. 1 and FIG. 2 show the vicinity of the engine 1 of a horizontally placed FF type passenger car, and the engine 1 is constituted by three cylinders. The engine 1 is located slightly on the right side (left side of the paper in FIG. 1) from the left and right center of the vehicle body, and the torque converter 2 and the transmission 3 are connected to the left side of the engine 1 (right side of the paper in FIG. 1). 1, a torque converter 2 and a transmission 3 constitute a drive unit (automatic transmission type).

  As shown in FIGS. 1 and 2, the right upper portion of the engine 1 is supported by the right subframe 4 via a right mount 5 (movable plate type liquid-filled mount), and the left upper portion of the mission 3 is supported by the left subframe 6. Supported by a left mount 7 (elastic mount), a lower part of a protruding portion (with a differential mechanism (not shown) built in) behind the mating portion of the engine 1 and the torque converter 2, a front suspension A torque rod 9 is connected across the member 8. As a result, the drive unit (the engine 1, the torque converter 2 and the transmission 3) is supported in the left-right direction of the vehicle body (the left-right direction in FIG. 1 and the up-down direction in FIG. 2).

Next, the right mount 5 configured as a movable plate type liquid-filled mount will be described.
As shown in FIGS. 3 and 4, the right mount 5 includes an engine side mounting member 10, a first vehicle body side mounting member 11, a second vehicle body side mounting member 12, a vibration isolation member 13, and the like. The first vehicle body side mounting member 11 is formed in an inverted U shape in a side view (see FIG. 3), and is arranged along the vehicle longitudinal direction (the left and right direction in FIG. 2 is the left side in FIG. 2). Has been. The 2nd vehicle body side attachment member 12 is comprised by the cylindrical shape (cup shape) provided with the bottom part, and is provided with the flange part 12a and the arm part 12b.

  As shown in FIGS. 3 and 4, the front and rear portions of the second vehicle body side mounting member 12 are connected to the front and rear portions of the first vehicle body side mounting member 11 by welding, and the flanges of the second vehicle body side mounting member 12 are connected. The front part and the rear part of the part 12a are connected to the front and rear part of the first vehicle body side mounting member 11 by welding. As described above, the first and second vehicle body side mounting members 11 and 12 are connected, and the front and rear portions of the first vehicle body side mounting member 11 are attached to the support member 16 fixed to the right subframe 4. The arm portion 12 b of the second vehicle body side mounting member 12 is connected to the vehicle body by a bolt 19.

  As shown in FIGS. 3 and 4, the engine-side mounting member 10 is configured as a horizontally long arm, and the base 10 a of the engine-side mounting member 10 is connected to the upper right side of the engine 1 by a bolt 18. It is arranged along the left-right direction (the left-right direction in FIG. 1 and the up-down direction in FIG. 2, the left side of FIG. 1 is the right side of the vehicle body). The anti-vibration member 13 is made of anti-vibration rubber, and a plurality of two chambers (not shown) in which a buffer liquid (not shown) such as ethylene glycol is enclosed in the anti-vibration rubber and the two chambers communicate with each other. A flow path (not shown), a movable plate (not shown) that opens and shields a part of the plurality of flow paths, and the like are provided, and the vibration isolation member 13 is provided inside the second vehicle body mounting member 12. Is fixed.

  As shown in FIGS. 3 and 4, an auxiliary vibration isolating member 15 integrally formed of an elastic body such as rubber is provided in a rectangular box shape having no bottom portion, and the engine side mounting member 10 is provided with the auxiliary vibration isolating device. The member 15 is inserted. The engine side mounting member 10 and the auxiliary vibration isolating member 15 are inserted between the upper part of the first vehicle body side mounting member 11 and the upper part of the vibration isolating member 13, and the opening 11a of the first vehicle body side mounting member 11 and the auxiliary vibration isolating member 15 are inserted. The engine-side mounting member 10 and the vibration isolating member 13 are connected by a bolt 14 inserted from the opening 15 a of the vibration isolating member 15. The right mount 5 (movable plate type liquid-filled mount) is configured as described above.

Next, the left mount 7 configured as an elastic mount will be described.
As shown in FIGS. 5, 6, and 7, two leg portions 20 a are connected to the lower portion of the ring-shaped support member 20 by welding, and one arm portion 20 b is connected to the upper portion of the support member 20 by welding. Yes. A metal ring member 21 and an anti-vibration rubber 22 having a ring shape and a pair of leg portions 22a (smaller diameter than the inner surface of the ring member 21) are prepared, and the leg portions 22a of the anti-vibration rubber 22 are provided with the ring member 21. The pipe member 23 is fixed to the central opening of the anti-vibration rubber 22. An anti-vibration rubber stopper 24 is fixed to the upper part of the inner surface of the ring member 21, and an anti-vibration rubber stopper 25 is provided between the legs 22 a of the anti-vibration rubber 22 at the lower part of the inner surface of the ring member 21. It is fixed.

  As shown in FIGS. 5, 6, and 7, the ring member 21 to which the anti-vibration rubber 22 and the stopper portions 24 and 25 are fixed is fixed to the inner surface of the support member 20, and the leg portion 20 a of the support member 20 is on the left side. The sub-frame 6 is connected by a bolt 27, and the arm portion 20 b of the support member 20 is connected to the vehicle body by a bolt 28. As a result, the support member 20 and the vibration isolating rubber 22 (leg portions 22a) are arranged in the vehicle front-rear direction (the left-right direction in FIG. 2 and the left side in FIG. 2 is the front side of the vehicle). The pipe member 23) is directed in the left-right direction of the vehicle body (left-right direction on the paper surface in FIG. 1 and up-down direction on the paper surface in FIG. 2).

  As shown in FIGS. 5, 6, and 7, an arm portion 26 is connected to the upper left portion of the mission 3, and the arm portion 26 moves in the left-right direction of the vehicle body (in the left-right direction in FIG. 1 and the up-down direction in FIG. The arm portion 26 is inserted into the opening (pipe member 23) of the anti-vibration rubber 22. The left mount 7 (elastic mount) is configured as described above.

Next, the arrangement of the right mount 5 (movable plate type liquid-filled mount), the left mount 7 (elastic mount) and the torque rod 9 will be described.
As shown in FIGS. 8A and 8B, when a torque of a piston (not shown) is applied to a crankshaft (not shown) of the engine 1 in the drive unit (engine 1, torque converter 2 and transmission 3). The drive unit (engine 1, torque converter 2 and transmission 3) tends to vibrate (rotate) around the axis A1 in the lateral direction of the vehicle body passing through the drive unit (engine 1, torque converter 2 and transmission 3). The vehicle body lateral axis A1 is referred to as a torque roll axis A1. In this case, the torque roll shaft A1 is inclined with respect to the crankshaft of the engine 1, and the engine 1 side of the torque roll shaft A1 is located slightly on the vehicle body front side (left side of the paper in FIG. 8A) in plan view. The transmission 3 (the drive unit (the engine 1, the torque converter 2 and the transmission 3) of the torque roll shaft A1 is slightly asymmetrical in the left-right direction). Because it is asymmetric).

  In the three-cylinder engine 1, during idling, for example, as shown in FIGS. 8A and 8B, the center P1 near the center of the torque roll shaft A1 is the apex of the cone, and the drive unit (engine 1, torque converter 2 and It has been recognized that an excitation force (primary couple) that causes the engine 1 side of the mission 3) to make a circular motion (see one locus B1) around the torque roll axis A1 is generated. The center P1 near the center is the apex of the cone, and the drive unit (engine 1, torque converter 2 and mission 3) is circularly moved by shifting the phase of 180 ° around the torque roll axis A1 (see one locus B2). ) It is recognized that the excitation force (primary couple) to be generated is generated (the drive unit (the engine 1, the torque converter 2 and the missile). Down 3 total) is, exciting force that causes rotation so as to draw a locus such as drum around torque roll axis A1 (primary force couple)).

  As shown in FIGS. 8A and 8B, the right mount 5 (movable plate type liquid-filled mount), the left mount 7 (elastic mount), and the torque rod 9 are used to drive the engine (engine 1, torque converter 2 and mission 3). ) Is elastically supported, the elastic roll axis A2 in the left-right direction of the vehicle body that enables the drive unit (engine 1, torque converter 2 and transmission 3) to elastically rotate (vibrates) is provided on the right mount 5 (movable plate type). It depends on the arrangement of the liquid-filled mount) and the left mount 7 (elastic mount) and the torque rod 9.

  As shown in FIGS. 8A and 8B, the right mount 5 (movable plate type liquid-filled mount) and the left mount 7 (elastic mount) are positioned on the torque roll shaft A1 in a plan view (right mount 5). (Moving plate type liquid-filled mount) is slightly ahead of the vehicle body (left side of the paper in FIG. 8 (a)) than the left mount 7 (elastic mount), and the right mount 5 (movable plate type liquid-filled mount) is the left mount. 7 (located on the upper side of the vehicle body in FIG. 1) slightly above the elastic mount 7). The connecting portion between the drive unit (engine 1, torque converter 2 and transmission 3) and torque rod 9 is slightly left of the vehicle body left side of the center P1 in the vicinity of the center of the torque roll axis A1 in plan view (lower side of the page in FIG. 8 (a)). ) Is positioned slightly behind the torque roll shaft A1. Thereby, the torque roll axis A1 and the elastic roll axis A2 substantially coincide with each other in plan view.

[First Alternative Embodiment of the Invention]
As shown in FIG. 8 (a), the torque roll shaft A1 is slightly inclined in plan view (the engine 1 side of the torque roll shaft A1 is located slightly on the front side of the vehicle body (left side of FIG. 8 (a)). In addition to the fact that the A3 mission 3 side is slightly rearward of the vehicle body (to the right of the paper in FIG. 8 (a)), the torque roll axis A1 is slightly inclined even when viewed from the front (the engine 1 side of the torque roll axis A1 is It may be located slightly above the vehicle body, and the transmission 3 side of the torque roll axis A1 may be slightly located below the vehicle body).

  In this case, in the above-mentioned [Best Mode for Carrying Out the Invention], the connecting portion between the drive unit (the engine 1, the torque converter 2 and the transmission 3) and the torque rod 9 is the center of the torque roll shaft A1 in plan view. The elastic roll axis A2 can be tilted in the same manner as the torque roll axis A1 when viewed from the front by positioning it a little further to the left side of the vehicle body (lower side of the plane of FIG. 8 (a)) than the nearby center P1. Thereby, in addition to the torque roll axis A1 and the elastic roll axis A2 substantially matching in a plan view, the torque roll axis A1 and the elastic roll axis A2 also approximately match in a front view. Can be.

[Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment], a connecting portion between the drive unit (engine 1, torque converter 2 and transmission 3) and torque rod 9 is connected to a torque roll. By being positioned near the center of gravity of the drive unit (engine 1, torque converter 2 and transmission 3) in the vicinity immediately below the axis A1, the torque roll axis A1 and the elastic roll axis A2 are substantially matched in plan view. You may comprise so that torque roll axis | shaft A1 and elastic roll axis | shaft A2 may correspond substantially by planar view and front view.

[Third Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment of the Invention] [Second Alternative Embodiment of the Invention], the left mount 7 is configured as a movable plate type liquid-filled mount, and the right mount. The mount 5 may be configured as an elastic mount, and both the right and left mounts 5 and 7 may be configured as movable plate type liquid-filled mounts.

  In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment] [Second Alternative Embodiment], a clutch (not shown) is used instead of the torque converter 2 in the engine 1. It may be connected to a manual transmission type. The transmission 3 may be a belt CVT type transmission 3 in place of the gear transmission mechanism having a plurality of stages.

  In the above-mentioned [Best Mode for Carrying Out the Invention] [First Another Mode of Carrying Out the Invention] [Second Another Mode of Carrying Out the Invention], a slight left side from the left and right center of the vehicle body (to the right in FIG. 1). The engine 1 may be disposed on the right side of the engine 1 (the left side of FIG. 1) and the torque converter 2 (or clutch) and the transmission 3 may be connected to form a drive unit. You may comprise.

Front view of the drive unit (engine, torque converter and transmission), right and left mounts, and the vicinity of the torque rod Plan view of the drive unit (engine, torque converter and transmission), right and left mounts, and the vicinity of the torque rod Exploded perspective view of right mount Front view near the right mount Exploded perspective view of left mount Longitudinal front view near the left mount Longitudinal side view of left mount (A) Drive unit (engine, torque converter and transmission), right and left mount, torque rod, torque roll shaft and elastic roll shaft arrangement plan view, (B) drive unit (engine, torque converter and transmission), Side view showing arrangement of right and left mounts and torque rod

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine 3 Mission 5 Right mount 7 Left mount 9 Torque rod A1 Torque roll axis A2 Elastic roll axis 26 Arm part 22 Anti-vibration rubber

Claims (2)

In a drive unit in which an engine of a plurality of odd cylinders and a transmission are connected, the upper right side of the drive unit is supported on the vehicle body via a right mount, and the upper left side of the drive unit is supported on the vehicle body via a left mount, A torque rod is connected across the lower part of the drive unit and the vehicle body, and the drive unit is supported in the vehicle body left-right direction,
A torque roll shaft that is an axial center of the vehicle body in the left-right direction when the drive unit is to be rotated by applying a torque of a piston to the crankshaft of the engine;
With the elastic roll shaft in the vehicle body left-right direction in which the drive unit is elastically rotatable by the drive unit being elastically supported by the right and left mounts and the torque rod,
The right and left mounts are positioned on the torque roll shaft in a plan view, and the torque roll shaft and the elastic roll shaft are configured to substantially coincide with each other in a plan view.
A drive unit support structure for a vehicle, wherein the right or left mount is configured by a movable plate type liquid-filled mount. One of the right or left mount is constituted by a movable plate type liquid-filled mount,
By configuring the other of the right or left mount with an elastic mount having an arm portion fixed to the drive unit and an anti-vibration rubber having an opening into which the arm portion is inserted,
The vehicle drive unit support structure according to claim 1, wherein the elastic mount is configured such that the arm portion extends along the left-right direction of the vehicle body and the opening portion faces the left-right direction of the vehicle body.

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