JPS608187Y2 - Connection structure between vehicle body and engine part - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a connection structure in which a vehicle body and an engine are connected by a torque rod via an insulator.

As shown in Fig. 1, which shows an example applied to a front-wheel drive vehicle, the torque rod A connects the engine section C and the vehicle body via an insulator B provided at one or both ends of the torque rod A. It is used to prevent torque reaction force generated during acceleration/deceleration and to reduce vibration during idling.

The present invention relates to an improvement in the connection structure between a vehicle and an engine, and an object of the present invention is to provide a connection structure that is more effective in reducing vibration and noise than conventional connection structures and is more durable.

The present invention will be described below with reference to embodiments shown in the drawings.

As shown in one embodiment in FIG. 2, the torque rod insulator 1 is made of a circular elastic material (for example, rubber), and is provided with slits 2 and 3 that are asymmetrical to each other in the left and right directions, that is, in the X' and X directions. , and has a configuration in which slits 4, 4 each having a shape symmetrical to each other in the upper and lower directions, that is, in the Y direction, are provided.

Note that 5.6 indicates an inner cylinder and an outer cylinder fitted around the inside and outside of the insulator 1, respectively.

The slits 2 and 3 each have a mountain shape with the top facing the inner cylinder 5 side, and the latter has a larger slit width than the former.

Further, the slits 4, 4 are each U-shaped, and have the same width.

FIG. 3 shows load-deflection characteristics when loads are applied to the insulator 1 from the inner cylinder 5 side in x, x', y, and two directions.

As is clear from the figure, this insulator 1 has nonlinear spring characteristics in the X, X', and Y directions, but this insulator 1 acts as a soft spring until the inner surfaces of the slits 2, 3, and 4 come into contact with each other. This is because it acts as a stiff spring after contact.

However, since the width of the slit 3 is larger than the width of the slit 2, the width of the slit 3 is X as shown in the figure.

The deflection characteristics in the X' force direction are different from each other.

Note that in this embodiment, the X direction is higher than the Y direction.

It has a tendency to be easily deflected in the direction of the X′ force.

Moreover, the load-deflection characteristics in two directions are linear.

The insulator in this example is
, has nonlinear spring characteristics in the X' and Y directions, so the engine's low linkage X.

By arranging it so that it receives the X′ force direction, pitching in the Y direction, and yawing in the Z direction, it is possible to effectively reduce vibrations when the engine is idling, thereby reducing noise. Moreover, it has high durability against idling vibration.

Furthermore, in a front-wheel drive vehicle, a large torque reaction force is generated during sudden acceleration/deceleration, but the insulator of the present invention has different deflection characteristics in the X direction and that in the X' force direction. By arranging the engine to receive the rolling that occurs during acceleration in the X direction toward the wide slit side, and to receive the rolling that occurs during sudden deceleration in the X' force direction toward the narrow slit side,
The torque reaction force described above can be prevented very well.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram illustrating the mounting manner of the torque arm, Fig. 2 shows an embodiment of the insulator for a torque rod according to the present invention, and Fig. 1a is a plan view thereof; 3 is a cross-sectional view taken along line -A, and is a graph showing the load-tag characteristics of the insulator according to the present invention. 1... Insulator, 2, 3.4...
・Slit, 5...Inner cylinder, 6...Outer cylinder.

Claims (1)

[Claims for Utility Model Registration] A connection structure in which a vehicle body and an engine are connected to each other by a torque rod via an insulator, which extends along the axis of the insulator and in the X and X' force directions. a pair of slits that are asymmetrical and have different widths, facing each other across the axis, and the X that extends along the axis. The insulator is formed with a pair of slits that are symmetrical and have the same width and are opposed to each other across the axis in the Y direction that is perpendicular to the X' force direction, so that the rolling of the engine section is caused in the X and X' directions. , the insulator is arranged so as to receive pitching in the Y direction and yawing in the axial direction, that is, two directions, and
The rolling of the engine section that occurs during sudden acceleration is directed toward the wide slit in the X direction, and the rolling that occurs during sudden deceleration is directed toward the narrow slit in the X' direction.
A connection structure between the vehicle body and the engine, characterized by being arranged so as to receive force in the direction of the force.