JP2010018096A - Support device for powertrain - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve assemblability of a torque rod and to reduce a vibration transmitted from the torque rod to a vehicle body. <P>SOLUTION: For this purpose, in a support device for power train including a wheel house arranged to project upward to an outside of a side frame extending in a longitudinal direction of a vehicle, a powertrain arranged on a side of the side frame, the torque rod arranged between the wheel house and the power train to connect between the vehicle body and the powertrain, and a bushing part connecting the torque rod with the vehicle body, the bushing part connected with the vehicle body via a bracket with its axis oriented in a vertical direction of the vehicle, the bracket is separated into a lower bracket and an upper bracket, the lower bracket extends in the longitudinal direction of the vehicle along the side frame to be fixed to an upper surface of the side frame at a plurality of fixing points, and the upper bracket extends farther than the lower bracket outside in a vehicle width direction to be fixed to an upper surface of the wheel house. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a powertrain support device, and more particularly to a powertrain support device that improves the assembly of a torque rod to a vehicle body and reduces vibration transmitted from the torque rod to the vehicle body.

Conventionally, in a powertrain support device, a powertrain formed by connecting an engine and a transmission is mounted horizontally in an engine room formed at the front of a vehicle body, and the front wheels are driven by the powertrain. There is a vehicle.
Some of such vehicles are provided with a torque rod in order to suppress the vibration of the power train in the longitudinal direction of the vehicle.
Normally, the torque rod has cylindrical bushes at both ends, and is connected to a power train and a vehicle body member on the side of the engine room.

Japanese Patent Laid-Open No. 9-220938 JP 2003-2070 A

By the way, in the conventional power train support device, when the torque rod is connected to the power train and the vehicle body member located on the side of the engine room, as disclosed in Patent Document 1 above, There are some which are fixed to a vehicle body member such as a spring house panel with the axis line directed in the vehicle vertical direction and the bush portion sandwiched between brackets having a pair of upper and lower support portions.
However, in the structure described above, since the bracket is integrated with the vehicle body member, there is an inconvenience that it is difficult to insert the bush portion between the pair of support portions.
Further, since the bracket is not joined to a side frame or the like extending in the vehicle front-rear direction, there is a disadvantage that vibration is easily transmitted to the vehicle body.

  An object of the present invention is to improve the assemblability of the torque rod and reduce vibration transmitted from the torque rod to the vehicle body.

  Accordingly, in order to eliminate the above-described disadvantages, the present invention provides a wheel house that protrudes above the side frame outside the side frame that extends in the vehicle longitudinal direction, and a power train that is provided on the side of the side frame. A torque rod connecting the vehicle body and the power train is disposed between the wheel house and the power train, and an axis of a bush portion connecting the torque rod to the vehicle body is directed in the vehicle vertical direction. In a powertrain support device in which a portion is connected to a vehicle body via a bracket having a pair of upper and lower support portions, the bracket is divided into a lower bracket that supports the lower portion of the bush portion and an upper bracket that supports the upper portion of the bush portion. And extending the lower bracket along the side frame in the vehicle front-rear direction and the side frame. Concluded at a plurality of fastening points on the upper surface of the arm, characterized in that the upper bracket and fastened to the upper surface of the wheel house with extending from the bottom bracket in the vehicle width direction outer side.

As described above in detail, according to the present invention, the wheel house protruding above the side frame is disposed outside the side frame extending in the vehicle longitudinal direction, and the power train is disposed on the side of the side frame. A torque rod connecting between the power train and the power train is disposed between the wheel house and the power train, the axis of the bush portion connecting the torque rod to the vehicle body is directed in the vehicle vertical direction, and the bush portion is supported by a pair of upper and lower bushes. In a powertrain support device connected to the vehicle body via a bracket having a portion, the bracket is divided into a lower bracket that supports the lower portion of the bush portion and an upper bracket that supports the upper portion of the bush portion, and the lower bracket is used as a side frame. Along the vehicle longitudinal direction and fastened to the upper surface of the side frame at a plurality of fastening points, It is fastened to the upper surface of the wheel house a part bracket with extending from the bottom bracket in the vehicle width direction outer side.
Therefore, by dividing the bracket into a lower bracket that supports the lower part of the bush part and an upper bracket that supports the upper part of the bush part, the torque rod is positioned on the lower bracket with the upper bracket removed, and then the upper bracket is Can be assembled. Therefore, the assembling property of the torque rod disposed in the narrow space between the wheel house and the power train can be improved.
In addition, the lower bracket is extended along the side frame in the vehicle front-rear direction and fastened to the upper surface of the side frame at a plurality of fastening points, so that the lower bracket is directly supported by the subframe and the vibration transmitted from the torque rod to the vehicle body is generated. Can be suppressed.
Furthermore, since the upper bracket extends from the lower bracket to the outside in the vehicle width direction and is fastened to the upper portion of the lower bracket and the wheel house, vibration in a plane perpendicular to the longitudinal direction of the subframe of the lower bracket can be suppressed.
With the above structure, it is possible to improve the assembling property of the torque rod and reduce the vibration transmitted from the torque rod to the vehicle body.

  Embodiments of the present invention will be described below in detail with reference to the drawings.

1 to 5 show an embodiment of the present invention.
In FIG. 2, 1 is a vehicle, 2 is a vehicle body, and 3 is an engine room formed at the front of the vehicle 1.
A sub frame 4 is disposed below the engine room 3 of the vehicle 1. A pair of left and right left side frames (not shown) and a right side frame 5 extending in the vehicle front-rear direction are disposed above the sub frame 4. Is disposed.
In addition, in the engine room 3 between the left and right side frames 5, as shown in FIG. 2, a power train 8 formed by connecting the engine 6 and the transmission 7 is mounted horizontally.
At this time, as shown in FIG. 2, the power train 8 is composed of front and rear mounts 9 and 10 positioned at the front and rear portions of the power train 8 and left and right mounts 11 and 12 positioned at the left and right portions of the power train 8. It is attached to the subframe 4 through four places.

Further, on the outside of the left and right side frames 5, as shown in FIGS. 1 to 3 and 5, a wheel house protruding upward from the left and right side frames 5, for example, FIGS. 1 to 3 and 5. As shown, the right wheel house 13 is disposed outside the right side frame 5.
Note that the left side frame and the left wheel house formed outside the left side frame have the same configuration as the right side frame 5 and the right wheel house 13 formed outside the right side frame 5, Disclosure is omitted.
A torque rod 14 for connecting the vehicle body 2 and the power train 8 disposed on the side of the right side frame 5 is disposed between the right wheel house 13 and the power train 8. .
At this time, the axis CL1 of the vehicle body side bush portion 15 that is located on the rear side of the vehicle 1 of the torque rod 14 and connects the torque rod 14 to the vehicle body 2 is directed in the vehicle vertical direction as shown in FIG. The vehicle body side bush portion 15 is connected to the vehicle body 2 via a bracket 17 having a pair of upper and lower support portions 16.
Further, as shown in FIG. 1, the axis CL2 of the power train side bush portion 18 which is located on the vehicle 1 front side of the torque rod 14 and connects the torque rod 14 to the power train 8 is arranged in the vehicle width direction. The power train side bush portion 18 is connected to the power train 8 toward the head.

The bracket 17 is divided into a lower bracket 19 that supports the lower portion of the vehicle body side bush portion 15 and an upper bracket 20 that supports the upper portion of the vehicle body side bush portion 15, and the lower bracket 19 and the upper bracket 20 form the upper and lower parts. A pair of support parts 16 is comprised.
The lower bracket 19 extends along the side frame 5 in the vehicle front-rear direction, and is fastened to the upper surface portion 5t of the right side frame 5 at a plurality of fastening points 21 so that the upper bracket 20 is wider than the lower bracket 19 in the vehicle width. It is configured to extend outward in the direction and fasten to the upper surface portion 13 t of the right wheel house 13.
Specifically, as shown in FIGS. 1 and 3, the lower bracket 19 is formed in a substantially triangular shape in plan view, and a plurality of, for example, substantially, the upper bracket 5 t is provided on the upper surface portion 5 t of the right side frame 5. The fastening portion 21 is fastened at two fastening points 21 located at the front and rear of the triangular corner portion, and one of the other corner portions is a fastening portion to the torque rod 14 of the upper bracket 20, which will be described later. As shown in FIGS. 3 to 5, a boss portion 23 extending upward of the vehicle is formed at the central portion of the substantially triangular shape.
A third fastening portion 20c, which will be described later, is attached to the boss portion 23, which is a fastening portion of the upper bracket 20 to the lower bracket 19, while the right wheel house 13 of the upper bracket 20 is attached to the upper surface portion 13t of the right wheel house 13. The 2nd fastening part 20b mentioned later which is a fastening part to is attached.
At this time, as shown in FIGS. 1 and 3 to 5, the bracket 17 is divided into a lower bracket 19 that supports the lower portion of the vehicle body side bush portion 15 and an upper bracket 20 that supports the upper portion of the vehicle body side bush portion 15. Therefore, the torque rod 14 can be positioned on the lower bracket 19 with the upper bracket 20 removed, and then the upper bracket 20 can be assembled to the vehicle body 2. Thereby, the assembly property of the torque rod 14 arrange | positioned in the narrow space between the said right wheel house 13 and the said power train 8 can be improved.
Further, the lower bracket 19 is extended in the vehicle front-rear direction along the side frame 5, and a plurality of, for example, two places are provided on the upper surface portion 5 t of the right side frame 5 via the pedestal 22 as shown in FIGS. 1 and 4. Fasten at the fastening point 21. Thus, the vibration transmitted from the torque rod 14 to the vehicle body 2 can be suppressed by directly supporting the lower bracket 19 with the subframe 4.
Further, the middle portion of the upper bracket 20 is curved and extended outward in the vehicle width direction from the lower bracket 19 as shown in FIG. 1, and fastened to the upper bracket 13t of the lower bracket 19 and the right wheel house 13, and the lower bracket It is possible to suppress vibrations in the plane perpendicular to the 19 subframe longitudinal directions.
With the above structure, the assembly performance of the torque rod 14 can be improved and vibration transmitted from the torque rod 14 to the vehicle body 2 can be reduced.

Further, as shown in FIG. 1, the upper bracket 20 is disposed between a first fastening portion 20 a that is a fastening portion to the torque rod 14 and a second fastening portion 20 b that is a fastening portion to the right wheel house 13. A third fastening portion 20c, which is a fastening portion to the lower bracket 19, is provided, and the third fastening portion 20c is positioned on the vehicle front side with respect to the line L connecting the first fastening portion 20a and the second fastening portion 20b. .
That is, as shown in FIG. 1, when the middle portion of the upper bracket 20 is curved in an arc shape, the arc-shaped outer portion of the upper bracket 20 formed in the arc shape is disposed so as to be directed forward of the vehicle. .
At this time, when the line parallel to the line L connecting the first fastening part 20a and the second fastening part 20b and passing through the third fastening part 20c is L1, the line L1 is more than the line L. Is also positioned on the front side of the vehicle, and a movement amount S forward of the vehicle is ensured between the line L and the line L1.
Thereby, by the said structure, the said upper bracket 20 around the line L which ties the 1st fastening part 20a which is a fastening part to the torque rod 14, and the 2nd fastening part 20b which is a fastening part to the said right wheel house 13. The vibration transmitted from the power train 8 to the vehicle body 2 can be reduced.

Further, a second fastening portion 20b that is a fastening portion to the right wheel house 13 and a third fastening portion 20c that is a fastening portion to the lower bracket 19 are fastening portions to the torque rod 14 in the vehicle longitudinal direction. An auxiliary machine 24 is provided behind the second fastening part 20b and the third fastening part 20c.
That is, as shown in FIGS. 1, 2, and 5, a suspension housing 25 is disposed behind the right wheel house 13, and the vehicle front side of the suspension housing 25 and the upper surface of the right wheel house 13. In the portion 13t, the auxiliary device 24 such as an ABS unit (also referred to as “anti-lock brake system unit”) is disposed behind the second fastening portion 20b and the third fastening portion 20c.
As a result, the second fastening portion 20b that is the fastening portion to the right wheel house 13 and the third fastening portion 20c that is the fastening portion to the lower bracket 19 are positioned so as not to overlap the auxiliary device 24 in the vehicle vertical direction. It can arrange | position and can improve the assembly | attachment property to the vehicle 1 of the said upper bracket 20. FIG.
Further, since the gap in the vehicle front-rear direction between the auxiliary machine 24 and the upper bracket 20 can be enlarged, the upper bracket 20 can be disposed at a position that does not affect the auxiliary machine 24 in the event of a vehicle collision.
In addition, when an intermediate portion with the upper bracket 20 is curved in an arc shape, the arc-shaped outer portion of the upper bracket 20 formed in the arc shape is disposed so as to be directed forward of the vehicle. Even if an external addition is applied to the central portion of the upper bracket 20 at the time of a vehicle collision, the deformation resistance of the upper bracket 20 is improved because the central portion of the upper bracket 20 is curved in an arc shape. There is no possibility that the upper bracket 20 is easily deformed, which contributes to the improvement of the rigidity of the upper bracket 20.

It is a principal part enlarged plan view of the right side part of the engine room of the vehicle which shows the Example of this invention. It is a top view of the engine room of a vehicle. It is an expansion perspective view of the state which looked at the engine room of vehicles from the right front. It is an expansion right view of the engine room of a vehicle. It is an expansion right front view of the engine room of a vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 3 Engine room 4 Sub-frame 5 Right side frame 6 Engine 7 Transmission 8 Power train 11, 12 Left side and right side mount 13 Right wheel house 14 Torque rod 17 Bracket 19 Lower bracket 20 Upper bracket 20a Fastening to torque rod First fastening portion 20b Second fastening portion 20c that is a fastening portion to the right wheel house Third fastening portion that is a fastening portion to the lower bracket 21 Multiple fastening points 24 Auxiliary machinery 25 Suspension housing

Claims (3)

  A torque house is provided on the outside of the side frame extending in the longitudinal direction of the vehicle, with a wheel house protruding above the side frame, with a power train on the side of the side frame, and connecting between the vehicle body and the power train. Is disposed between the wheel house and the power train, and an axis of a bush portion connecting the torque rod to the vehicle body is directed in the vehicle vertical direction, and the bush portion is connected to the vehicle body via a bracket having a pair of upper and lower support portions. In the powertrain support device connected to the bracket, the bracket is divided into a lower bracket that supports the lower portion of the bush portion and an upper bracket that supports the upper portion of the bush portion, and the lower bracket is extended along the side frame in the vehicle longitudinal direction. The upper bracket is fastened to the upper surface of the side frame at a plurality of fastening points. Powertrain support device of Tsu bets with extending from the bottom bracket in the vehicle width direction outer side, characterized in that fastened to the upper surface of the wheel house.   The upper bracket includes a fastening portion to the lower bracket between a fastening portion to the torque rod and a fastening portion to the wheel house, and the fastening portion to the lower bracket is connected to the fastening portion to the torque rod and the wheel house. The powertrain support device according to claim 1, wherein the powertrain support device is positioned on the vehicle front side of a line connecting the fastening portions.   The fastening portion to the wheel house and the fastening portion to the lower bracket are arranged in the vehicle front side from the fastening portion to the torque rod in the vehicle front-rear direction, and the rear of the fastening portion to the wheel house and the fastening portion to the lower bracket. 3. The powertrain support device according to claim 2, wherein an auxiliary machine is provided on the powertrain.

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