JP5291360B2 - Vehicle engine mount structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an engine mounting structure of a vehicle capable of certainly regulating displacement in a vehicle width direction of a power unit side mounting member. <P>SOLUTION: The engine mounting structure of the vehicle comprises a vehicle body side mounting member 11 coupled to a vehicle body, and the power unit side mounting member 10 coupled to a power unit. The vehicle side mounting member 11 and the power unit side mounting member 10 are coupled through a vibration isolating member, thereby supporting the power unit to the vehicle body. A stopper member 19 capable of regulating the displacement in the vehicle width direction of the power unit side mounting member 10 is set to the vehicle body side mounting member 11, and the stopper member 19 is coupled at or near a suspension tower. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention includes a vehicle body side mounting member connected to a vehicle body and a power unit side mounting member connected to a power unit, and the vehicle body side mounting member and the power unit side mounting member are connected via a vibration isolation member. The present invention relates to an engine mount structure for a vehicle configured to support a power unit on a vehicle body.

As a conventional engine mount structure having the above-described configuration, for example, as disclosed in FIG. 3 of Patent Document 1, the vehicle body is interposed via an auxiliary vibration isolation member that can regulate the displacement of the power unit side mounting member in the vehicle width direction. What connects a side attachment member and a power unit side attachment member is known.
JP 2007-326523 A

  However, in the engine mount structure disclosed in Patent Document 1, the second convex portion 15g of the auxiliary vibration isolation member 15 provided on the power unit side mounting member is in contact with the lateral wall portion 11b of the first vehicle body side mounting member 11. By hitting, the displacement of the power unit side mounting member in the vehicle width direction is regulated, and there is a situation where a large load derived from the power unit cannot be received only by the rigidity of the first vehicle body side mounting member 11. There is room for improvement in that the displacement of the power unit side mounting member in the vehicle width direction can be reliably regulated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a vehicle engine mount structure that can more reliably regulate the displacement of the power unit side mounting member in the vehicle width direction.

In order to achieve the above object, in the present invention,
A vehicle body side mounting member connected to the vehicle body; and a power unit side mounting member connected to the power unit. The vehicle body side mounting member and the power unit side mounting member are connected via a vibration isolating member to And is configured to support
The vehicle body-side mounting member, in the vehicle width direction outer side of the power unit-side mounting member, when the power unit side mounting member is displaced outwardly the vehicle width direction, by a person 該Pa word unit side attachment member abuts, A stopper member capable of regulating displacement of the power unit side mounting member to the outside in the vehicle width direction;
The stopper member includes a first fixing portion that comes into contact with the power unit side mounting member, and a second fixing portion that extends outward in the vehicle width direction from the first fixing portion, and the vehicle of the second fixing portion. Connect the outer edge of the width direction to the suspension tower or the moment canceller located in front of it ,
The vehicle body side mounting member is supported by a member different from the member to which the second fixing portion is coupled among the members of the vehicle body .

[Action and effect]
A large load derived from the power unit can act on the stopper member that can regulate the displacement of the power unit side mounting member in the vehicle width direction.
In the present invention, the load is transmitted to the suspension tower having high rigidity or the vicinity thereof through the stopper member.
Therefore, the stopper member in the present invention can more reliably receive a large load derived from the power unit, and as a result, the displacement of the power unit side mounting member in the vehicle width direction can be more reliably regulated.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment
The vehicle engine mount structure of the present invention will be described with reference to FIGS. In addition, the arrow FR, arrow UP, and arrow W which are suitably described in each figure show the front direction, the upward direction, and the width direction (left-right direction) of the vehicle, respectively.

1 and 2 show the vicinity of a horizontal power unit P mounted on an FF type passenger car.
As shown in FIGS. 1 and 2, in the power unit P, the engine 1 is arranged slightly to the right (left side of FIG. 1) from the left and right center of the vehicle body, and the left side of the engine 1 (right side of FIG. 1). The torque converter 2 and the transmission case 3 are connected to each other.
The right side member 4 supports the right side of the engine 1 via a mount 5, and the left side member 6 supports the left side of the transmission case 3 via a mount 7. The engine 1 (torque converter 2) A torque rod 9 is connected across the lower part of the front suspension member 8 and the front suspension member 8.

Next, the mount 5 according to the engine mount structure for a vehicle of the present invention will be described.
As shown in FIGS. 3 and 4, the mount 5 includes a power unit 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.

  As shown in FIG. 3, the power unit side mounting member 10 is formed in a horizontally long arm shape, and a base portion 10 a of the power unit side mounting member 10 is connected to the right side portion of the engine 1 by a bolt 18. Further, the vibration isolating member 13 is constituted by an elastic body such as rubber in which a buffer liquid such as ethylene glycol is sealed, and the vibration isolating member 13 is fixed inside the second vehicle body side mounting member 12. The second vehicle body side mounting member 12 is formed in a cylindrical shape (cup shape) with a bottom, and the front and rear portions of the second vehicle body side mounting member 12 are in front of the first vehicle body side mounting member 11. And it is connected with the rear leg part 11d by welding.

As shown in FIGS. 3 to 5, a box-shaped auxiliary vibration isolation member 15 (elastic body such as rubber) is provided between the upper wall portion 11 c of the first vehicle body side mounting member 11 and the upper portion of the vibration isolation member 13. The power unit side mounting member 10 is inserted, and the power unit side mounting member 10 is inserted by the bolts 14 inserted from the first opening 11e of the first vehicle body side mounting member 11 and the opening 15e of the auxiliary vibration isolation member 15. And the vibration isolation member 13 are connected to each other.
The auxiliary vibration isolating member 15 includes a front and rear vertical wall portion 15a, a horizontal wall portion 15b, a front wall and a rear wall portion 15b extending from the front and rear vertical wall portions 15a to the horizontal wall portion 15b. And the bottom wall part 15d over the lower part of the back vertical wall part 15a is provided. A portion between the horizontal wall portion 15b and the bottom wall portion 15d is opened downward (see FIG. 6) and is surrounded by the front and rear vertical wall portions 15a, the upper wall portion 15c, and the bottom wall portion 15d (the horizontal wall portion 15b). 3) is open toward the right side of the sheet of FIG.

  As shown in FIG. 3, the first vehicle body side mounting member 11 is formed in an inverted U shape in a side view, and is disposed along the vehicle front-rear direction. The front and rear vertical wall portions 11 a and the flange shape The left and right horizontal wall portions 11b, the upper wall portion 11c extending over the front and rear vertical wall portions 11a, the front and rear leg portions 11d provided on the front and rear vertical wall portions 11a, and the upper wall portion 11c are formed. The front and rear legs 11d are connected to the support member 16 fixed to the right side member 4 by bolts 17.

Further, the first vehicle body side mounting member 11 is provided with a stopper member 19 that can regulate displacement of the power unit side mounting member 10 in the vehicle width direction.
As shown in FIGS. 4 and 5, the stopper member 19 includes a U-shaped first fixing portion 19 a welded to the inside of the vertical wall portion 11 a before and after the first vehicle body side mounting member 11, The U-shaped second fixing portion 19b is connected to the first fixing portion 19a. As shown in FIGS. 2 and 3, the end portion of the second fixing portion 19b is in the vicinity of the suspension tower 20. The wheel house 21 is connected by a bolt 23.

  As shown in FIGS. 1 and 2, a suspension tower 20 that supports a coil spring (not shown) of a suspension includes a top wall portion 20a and a skirt-like peripheral wall portion that is continuous from the peripheral end portion of the top wall portion 20a. 20b, and as a whole, has a bottomed cylindrical shape with the vehicle lower side open. A wheel house 21 is integrally joined to a lower portion of the peripheral wall portion 20 b of the suspension tower 20, and the wheel house 21 is also joined to an inner surface of the upper member 22.

  As shown in FIG. 5 and FIG. 6A, the power unit side mounting member 10 and the vibration isolation auxiliary member 15 are disposed inside the first fixing portion 19 a of the stopper member 19, and the first of the stopper member 19. It is set so that the inner side surface S of the fixing portion 19a and the lateral wall portion 15b of the vibration isolation auxiliary member 15 face each other.

As shown in FIG. 6 (b), when the engine 1 of the power unit is moved rightward (leftward in FIG. 6B) due to vibration or the like, the power unit side mounting member 10 is also moved rightward (FIG. 6 (b)). ), The horizontal wall portion 15b of the vibration isolation auxiliary member 15 contacts the inner side surface S of the first fixing portion 19a of the stopper member 19 (the arrow shown in FIG. 6B is The displacement direction of the power unit side mounting member 10 is shown).
At this time, a large load derived from the power unit acts on the stopper member 19, but in the present embodiment, the load is transmitted to the highly rigid wheel house 21 (see FIG. 2) via the stopper member 19. It is configured as follows.
Therefore, the stopper member 19 can reliably receive a large load derived from the power unit, and the power unit side mounting member 10 moves further to the right from the position in contact with the inner surface S of the first fixed portion 19a. The right-side displacement of the power unit side mounting member 10 is reliably restricted.

[Another embodiment]
[1] As shown in FIGS. 7 and 8, the stopper member 19 in the above-described embodiment may be configured to be connected to the moment canceller M.
When the vehicle collides with the front, the side member 4 rises and deforms, and the impact force may not be absorbed efficiently.
The moment canceller M connects the side member 4 and the upper member 22 so that the impact force applied to the side member 4 at the time of a frontal collision can be easily transmitted to the upper member 22, thereby efficiently absorbing the impact force. This is a member that can prevent the member 4 from rising and deforming. Generally, the moment canceller M can further improve the rising deformation prevention effect of the side member 4 by increasing its rigidity by increasing its thickness or adding large parts.
7 and 8, the stopper member 19 is connected to the moment canceller M, and the stopper member 19 can serve as a reinforcing member that reinforces the moment canceller M. Therefore, the moment canceller M The rising deformation prevention effect of the side member 4 of the moment canceller M can be further improved without increasing the plate thickness or increasing the size.
[2] The stopper member 19 in the above-described embodiment may be provided on the mount 7 side to restrict the displacement of the power unit in the left direction. Alternatively, the stopper member 19 may be provided on both the mount 5 and the mount 7. It may be configured to restrict the displacement of the power unit in the vehicle width direction (left-right direction).
[3] The stopper member 19 in the above-described embodiment may be configured to be connected to the suspension tower 20.
[4] The stopper member 19 and the first vehicle body side mounting member 11 in the above-described embodiment may be integrally formed.

Front view near the power unit Plan view near the power unit The exploded perspective view of the engine mount structure concerning the present invention Front view of an engine mount structure according to the present invention Plan view of an engine mount structure according to the present invention Cross section taken along line VI-VI in FIG. The perspective view of the engine mount structure (another embodiment) concerning the present invention Front view of engine mount structure (another embodiment) according to the present invention

Explanation of symbols

1 Engine 2 Torque Converter 3 Mission Case 4 Side Member 5 Mount 6 Side Member 7 Mount 8 Front Suspension Member 9 Torque Rod 10 Power Unit Side Mounting Member 10a Base 11 First Car Body Side Mounting Member 11a Vertical Wall Part 11b Horizontal Wall Part 11c Upper Wall Part 11d Leg part 11e 1st opening part 12 2nd vehicle body side attachment member 12a Flange part 13 Vibration isolating member 14 Bolt 15 Auxiliary vibration isolating member 15a Vertical wall part 15b Horizontal wall part 15c Upper wall part 15d Bottom wall part 15e Opening part 16 Support member 17 Bolt 18 Bolt 19 Stopper member 19a First fixing portion 19b Second fixing portion 20 Suspension tower 20a Top wall portion 20b Peripheral wall portion 21 Wheel house 22 Upper member 23 Bolt

Claims (1)

A vehicle body side mounting member connected to the vehicle body; and a power unit side mounting member connected to the power unit. The vehicle body side mounting member and the power unit side mounting member are connected via a vibration isolating member to And is configured to support
The vehicle body-side mounting member, in the vehicle width direction outer side of the power unit-side mounting member, when the power unit side mounting member is displaced outwardly the vehicle width direction, by a person 該Pa word unit side attachment member abuts, A stopper member capable of regulating displacement of the power unit side mounting member to the outside in the vehicle width direction;
The stopper member includes a first fixing portion that comes into contact with the power unit side mounting member, and a second fixing portion that extends outward in the vehicle width direction from the first fixing portion, and the vehicle of the second fixing portion. Connect the outer edge of the width direction to the suspension tower or the moment canceller located in front of it ,
The vehicle body side mounting member is an engine mount structure for a vehicle that is supported by a member different from the member to which the second fixing portion is coupled among the members of the vehicle body .

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