JP2010221928A - Front engine mounting structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front engine mounting structure that can support various kinds of power units, can simplify a manufacturing process and product management, and can reduce manufacturing cost. <P>SOLUTION: A front engine-mounting structure 30 includes a vehicle-body side attaching bracket 34, an engine-side attaching bracket 36, and a vibration-proofing elastic body 38 for being integrally held by the engine-side attaching bracket. The engine-side attaching bracket is integrally formed in advance, with an elastic body holding bracket 40 integrally holding the vibration-proofing elastic body and attached to an engine side, and an adjusting bracket 42 projecting toward the vehicle-body side attaching bracket side from the elastic body holding bracket to be able to adjust the elastic body holding bracket in height and inclination directions with respect to the vehicle-body side attaching bracket. The vehicle-body side attaching bracket has insertion holes 44 inserted with the adjusting bracket so that its height and inclination angle can be adjusted to fix the adjusting bracket. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a front engine mount structure, and more particularly to a front engine mount structure used when a power uni is laterally supported on an FF vehicle.

  Generally, in an FF vehicle of an automobile, a power unit in which an engine and a transmission are integrated is mounted horizontally.

  In such a case, it is known that when the accelerator pedal is turned on / off, the power unit swings in the front-rear direction due to the reaction caused by the increase / decrease in engine speed, and vibration is generated.

  Therefore, the power unit is supported through a plurality of mounts, for example, a side engine mount, a transmission mount, a front engine mount, a rear engine mount, and the like (see Patent Document 1).

  In particular, the arrangement of a front engine mount is required to reduce idling vibration.

JP 2003-19909 A

  In such a front engine mount, it is necessary to change the angle and center position of the vibration-proof elastic body in accordance with the vibration of the engine.

  On the other hand, in the past, this has been dealt with by newly installing a front engine mount with the angle and center position of the anti-vibration elastic body changed according to the movement of the engine. Many kinds of front engine mounts have to be installed, which makes the manufacturing complicated, product management complicated, and increases the manufacturing cost.

  An object of the present invention is to provide a front engine mount structure that can be applied to various power units, that can simplify manufacturing and product management, and that can reduce manufacturing costs.

In order to achieve the above object, the front engine mount structure of the present invention has a vehicle body side mounting bracket for mounting on the vehicle body side and, on the one hand, is integrally attached to the vehicle body side mounting bracket and can be mounted on the engine side on the other side. A front engine mount structure having an engine-side mounting bracket and an anti-vibration elastic body integrally held by the engine-side mounting bracket;
The engine side mounting bracket protrudes toward the vehicle body side mounting bracket from the elastic body holding bracket, the elastic body holding bracket integrally holding the vibration isolating elastic body and being attachable to the engine side. And an adjustment bracket that is adjustable in height and inclination with respect to the vehicle body side mounting bracket.
The vehicle body side mounting bracket has an insertion hole that can be fixed by adjusting the height and the inclination angle by inserting the adjustment bracket.

  According to the present invention, the adjustment bracket is configured such that the engine-side mounting bracket is a subassembly with respect to the vehicle-body-side mounting bracket, and the engine-side mounting bracket is adjustable in the height direction and the inclination direction with respect to the vehicle-body-side mounting bracket. , The angle and center position of the anti-vibration elastic body can be easily adjusted, and as a result, it can be used for various power units, simplifying manufacturing and product management, Manufacturing costs can be reduced.

In the present invention, the elastic body holding bracket has a mounting protrusion at the adjustment bracket corresponding position,
A mounting hole is formed at a position corresponding to the mounting protrusion of the adjustment bracket,
The elastic body holding bracket and the adjustment bracket can be integrated by caulking by inserting the mounting protrusion into the mounting hole.

  By adopting such a configuration, the mounting protrusion of the elastic body holding bracket is inserted into the mounting hole of the adjustment bracket and caulked so that the engine-side mounting bracket can be easily and reliably sub-assembled with a simple structure at low cost. Can be

In the present invention, the elastic body holding bracket is formed in advance with a half-shaped bracket member having a mounting projection at a position corresponding to the adjustment bracket, and both ends of the pair of half-shaped bracket members are welded. Are joined to form a ring,
A mounting hole is formed at a position corresponding to the mounting protrusion of the adjustment bracket,
The elastic body holding bracket and the adjustment bracket can be integrated by inserting the one mounting protrusion into the mounting hole and caulking.

  By adopting such a configuration, it is possible to easily and surely manufacture the elastic body holding bracket at a low cost by reducing the number of parts by welding the half-shaped bracket member which is the same part.

  In addition, since the mounting protrusion is formed on the elastic body holding bracket, the mounting bracket is inserted into the mounting hole of the adjustment bracket and caulked so that the engine-side mounting bracket can be mounted at low cost with a simple structure. Subassembly can be easily and reliably performed.

  Further, the mounting projections on the side different from the mounting projections joined to the adjustment bracket can be used for mounting other parts such as dynamic dampers and mass dampers, and these are easily and reliably mounted. be able to.

  In the present invention, the vehicle body side mounting bracket is shaped so as to cover the bottom and sides of the engine side mounting bracket so that the engine side mounting bracket can be adjusted in a height direction and an inclination direction. After the adjustment in the height direction and the inclination direction, the engine side mounting bracket can be joined by welding.

  By adopting such a configuration, it is possible to share the vehicle body side mounting bracket without changing the vehicle body side mounting bracket, and as a result, it becomes possible to further simplify manufacturing and product management, Manufacturing costs can be reduced.

It is a front view which shows the front engine mount structure concerning one embodiment of this invention. It is a front view of the engine side attachment bracket of FIG. It is the elements on larger scale which show the joining state of the bracket for adjustment of FIG. 1, and the vehicle body side attachment bracket. It is a perspective view which shows the attachment state of the mount with respect to a power unit.

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

  FIG. 4 is a perspective view showing a mounting state of the mount with respect to the power unit.

  As shown in FIG. 4, the power unit 10 is mounted on the front of a vehicle body, and is formed by integrating an engine 12 located on the left side and a transmission 14 located on the right side.

  The engine 12 is arranged with the cylinder block 16 and the cylinder head 18 on the lower side and the upper side, respectively, and is arranged horizontally with the crankshaft (not shown) facing in the left-right direction of the vehicle body.

  In addition, since the power unit 10 vibrates due to the reaction caused by the increase / decrease of the engine speed, the power unit swings in the front-rear direction, and therefore, four mounts, for example, the engine 12 is supported by the left Freon and the side frame 20. Side engine mount 22, transmission mount 26 that supports transmission 14 on right front side frame 24, front engine mount 30 that supports engine 12 on cross member 28 that connects left and right front side frames 20, 24, engine 12 Are supported by the vehicle body via a rear engine mount 32 (indicated by a black circle because it is hidden behind the engine and is not visible) supported by a cross member (not shown) to which the front side frames 20 and 24 are connected. .

  Of these four members, the front engine mount 30 needs to change the angle and center position of the vibration-proof elastic body in accordance with the vibration of the engine.

  Therefore, in the present embodiment, a front engine mount structure as shown in FIG. 1 is adopted.

  The front engine mount 30 is integrally mounted on the vehicle body side mounting bracket 34 for mounting on the vehicle body side (cross member 28) and on the one hand on the vehicle body side mounting bracket 34, and on the other hand can be mounted on the engine 12 side. It has an engine side mounting bracket 36 and an anti-vibration elastic body 38 that is integrally held by the engine side mounting bracket 36.

  As shown in FIG. 2, the engine side mounting bracket 36 includes an elastic body holding bracket 40 and an adjustment bracket 42.

  The elastic body holding bracket 40 has a substantially cross-shaped annular shape covering the outer periphery of the substantially cross-shaped vibration-proofing elastic body 38, and integrally holds the vibration-proofing elastic body 38 on the inner side so as to be on the engine 12 side. Can be attached to.

  The adjustment bracket 42 is integrated with the elastic body holding bracket 40 in advance and is sub-assembled as an engine side mounting bracket 36. The adjustment bracket 42 protrudes from the elastic body holding bracket 40 toward the vehicle body side mounting bracket 34 and holds the elastic body. The bracket 40 can be adjusted with respect to the vehicle body side mounting bracket 34 in the height direction and the inclination direction.

  The vehicle body side mounting bracket 34 is attached to the vehicle body side (cross member 28) while holding the engine side mounting bracket 36, and the adjustment bracket 42 is inserted into a position corresponding to the adjustment bracket 42 as shown in FIG. Thus, it has an insertion hole 44 that can be fixed by adjusting the height and inclination angle of the engine side mounting projection 36.

  Then, after the adjustment bracket 42 is inserted into the insertion hole 44 of the vehicle body side mounting bracket 34 and the engine side mounting projection 36 is adjusted with the predetermined height h and the inclination angle θ, the adjustment bracket 42 and the insertion hole Arc welding is performed with the vehicle body side mounting projection 34 at the 44 position.

  As described above, the engine-side mounting bracket 36 is used as a subassembly with respect to the vehicle body-side mounting bracket 34, and the engine-side mounting bracket 36 is adjustable in the height direction and the inclination direction with respect to the vehicle-body side mounting bracket 34. By providing the mounting bracket 42 integrally, it is possible to easily adjust the angle and center position of the vibration-proof elastic body 38. As a result, it is possible to cope with various power units, and to simplify manufacturing and product management. In addition, the manufacturing cost can be reduced.

  Further, in the present embodiment, the elastic body holding bracket 40 is formed in advance with a half-shaped bracket member 48 having a mounting projection 46 at a position corresponding to the adjustment bracket 42, and the pair of half-shaped brackets. Both ends of the member 48 are joined together by arc welding to form an annular shape.

  On the other hand, a mounting hole 50 is formed at a position corresponding to the mounting projection 46 of the adjustment bracket 42, and the elastic body holding bracket 40 and the adjustment bracket 42 have one (lower) mounting projection 46. It is integrated into the mounting hole 50 by caulking.

  By doing so, it is possible to manufacture the elastic body holding bracket 40 inexpensively, easily and reliably by reducing the number of parts by welding the half holding bracket member 48 which is the same part. It has become.

  In addition, since the mounting protrusion 46 is formed on the elastic body holding bracket 40, the mounting protrusion 46 is inserted into the mounting hole 50 of the adjustment bracket 42 and caulked, thereby reducing the cost with a simple structure. The engine side mounting bracket 36 can be easily and reliably sub-assembled.

  Further, the mounting projection 46 on the side (upper side) different from the mounting projection 46 joined to the adjustment bracket 42 can be used for mounting other parts such as a dynamic damper and a mass damper. Can be easily and reliably performed.

  In the present embodiment, the vehicle body side mounting bracket 34 is shaped so as to cover the bottom and sides of the engine side mounting bracket 36 so that the engine side mounting bracket 36 can be adjusted in the height direction and the inclination direction. By connecting the bracket 36 to the engine side mounting bracket 36 by welding after adjustment in the height direction and the inclination direction, the vehicle body side mounting bracket 34 can be mounted without changing the vehicle body side mounting bracket 34. As a result, the manufacturing and product management can be further simplified, and the manufacturing cost can be reduced.

  The present invention is not limited to the above-described embodiment, and the present invention can be modified into various forms without being cooked.

  For example, in the above-described embodiment, the elastic body holding bracket is formed by a half-upper racket member having a mounting projection, and both ends of the pair of half-shaped bracket members are welded. The elastic body holding bracket is not limited to this example, and may be formed as an annular member having one mounting protrusion at the position corresponding to the adjustment bracket.

12 Engine 14 Transmission 30 Front engine mount 34 Car body side mounting bracket 36 Engine side mounting bracket 38 Anti-vibration elastic body 40 Elastic body holding bracket 42 Adjustment bracket 44 Insertion hole 46 Mounting projection 48 Half-split bracket member 50 Installation Hole

Claims (4)

A vehicle body side mounting bracket for mounting on the vehicle body side, an engine side mounting bracket that is integrally attached to the vehicle body side mounting bracket on the one hand and that can be attached to the engine side on the other side, and a unit that is integral with the engine side mounting bracket In a front engine mount structure having an anti-vibration elastic body held by
The engine side mounting bracket protrudes toward the vehicle body side mounting bracket from the elastic body holding bracket, the elastic body holding bracket integrally holding the vibration isolating elastic body and being attachable to the engine side. And an adjustment bracket that is adjustable in height and inclination with respect to the vehicle body side mounting bracket.
The front engine mount structure according to claim 1, wherein the vehicle body side mounting bracket has an insertion hole that allows the adjustment bracket to be inserted and adjusted to be fixed by adjusting a height and an inclination angle. In claim 1,
The elastic body holding bracket has a mounting projection at the position corresponding to the adjustment bracket,
A mounting hole is formed at a position corresponding to the mounting protrusion of the adjustment bracket,
The front engine mount structure, wherein the elastic body holding bracket and the adjustment bracket are integrated by caulking by inserting the mounting protrusion into the mounting hole. In claim 1,
The elastic body holding bracket is formed in advance with a half-shaped bracket member having a mounting projection at a position corresponding to the adjustment bracket, and both ends of the pair of half-shaped bracket members are joined by welding. Formed in a ring,
A mounting hole is formed at a position corresponding to the mounting protrusion of the adjustment bracket,
The front engine mount structure, wherein the elastic body holding bracket and the adjustment bracket are integrated by caulking by inserting the one mounting protrusion into the mounting hole. In claim 1 or 2,
The vehicle body side mounting bracket has a shape that covers the bottom and sides of the engine side mounting bracket so that the engine side mounting bracket can be adjusted in a height direction and an inclination direction. A front engine mount structure which is joined to the engine side mounting bracket by welding after adjustment in a direction.

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