JP3415178B2 - Engine mounting device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine mount device for elastically supporting an FF type horizontal engine on a vehicle body. 2. Description of the Related Art As a conventional engine mount device of this type, a rubber elastic body 101 is provided between an outer cylinder 100 and an inner cylinder 2 as shown in FIG. Two spaces A and B penetrating in the axial direction are formed, and a rubber elastic body 101 is formed.
Is known to have a substantially V-shaped cross section in the radial direction. When the outer cylinder 100 is fixed to the engine side and the inner cylinder 2 is fixed to the vehicle body side, and the engine is mounted, the space A greatly expands due to the weight of the engine, and it is difficult to suppress the warping of the engine when the vehicle starts or accelerates. There was a defect.
Therefore, a method was considered in which the space A was eliminated by squeezing the outer cylinder 100 before mounting the engine. In the conventional example in which the space A is eliminated, if the aperture of the outer cylinder 100 is increased, a base chemical conversion coating film for bonding and fixing the rubber elastic body 101 to the outer cylinder 100 is used. Alternatively, the adhesive was cracked and the rubber elastic body 101 was sometimes peeled off. SUMMARY OF THE INVENTION It is an object of the present invention to provide an engine mount device which prevents peeling of a rubber elastic body at the time of squeezing and can sufficiently suppress warping of an engine when the vehicle starts or accelerates. [0005] In order to achieve the above object, the outer cylinder is divided into two parts in the circumferential direction at locations corresponding to the two spaces, and the two parts on the top side of the substantially V-shaped rubber elastic body are divided. folding each by Rukoto folding the ends of the split outer cylinder to the inner cylinder side
A part is formed, and the top portion side of the rubber elastic body is brought into contact with the bent portion side by press-fitting the outer cylinder into the bracket so as to reduce the diameter, and the inner cylinder and the bracket are either one of the engine and the vehicle body, respectively. By attaching the rubber elastic body to the other side, the top side of the rubber elastic body is separated from the bent side by the weight of the engine. According to the present invention, the outer cylinder is press-fitted to the bracket so as to reduce the diameter, that is, the outer cylinder is squeezed. Does not occur. When the outer cylinder is pressed into the bracket, the V-shaped top of the rubber elastic body is in contact with the outer cylinder side, and this contact point is separated for the first time when the engine weight is applied. The increase is prevented, and the warpage of the engine can be prevented. Preferred embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an inner cylinder 2 and an outer cylinder 1
And two spaces A and B penetrating in the axial direction are formed on both sides of the inner cylinder 2 so that the rubber elastic body 3 has a substantially V-shaped cross section in the radial direction. Things,
The outer cylinder 1 is divided into two parts in the axial direction at locations corresponding to the two spaces A and B, and is composed of one member 1A and the other member 1B, and gaps X and Y are formed between the two members 1A and 1B. Have been. These gaps X and Y are connected to spaces B and A, respectively. The ends of both members 1A and 1B of the outer cylinder 1 divided into two parts on the top 3A side of the substantially V-shaped rubber elastic body 3 are bent toward the inner cylinder 2. These bent portions are bent at the bent portion 1
The cylindrical members formed as shown in FIG. 1 are shown as A 'and 1B' in FIG.
As shown in the figure, press-fit into the bracket 4 to be attached to the engine or the vehicle body. When the outer cylinder 1 is pressed into the bracket 4,
The outer cylinder 1 is reduced in diameter and divided, and both ends of the two members 1A, 1B abut each other such that the gaps X, Y between the two members 1A, 1B disappear. The top 3A of the rubber elastic body 3 is in contact with the outer cylinder 1 side. When the top 3A of the rubber elastic body 3 is in contact with the outer cylinder 1A, the space A remains on both sides of the top 3A.
The mounting member 5 is fixed to the bracket 4.
When the mounting member 5 is fixed to the engine and the inner cylinder 2 is mounted on the vehicle body, the outer cylinder 1 is drawn downward in FIG. 2 by the weight of the engine. That is, the rubber elastic body 3 depends on the engine weight.
The space A on the side of the top 3A expands, and the space B on the opposite side shrinks. In other words, the contact of the top 3A of the rubber elastic body 3 with the outer cylinder 1 is released, and the top 3A and the outer cylinder 1 are separated from each other to create a space therebetween. Due to the presence of the bent portions 1A 'and 1B', when the outer cylinder 1 is press-fitted into the bracket 4, the top portion 3A comes into contact with the bent portions 1A 'and 1B', or the bent portions 1A 'and 1B' are Will be pushed up. By adjusting the pressure at which the top 3A side of the rubber elastic body 3 and the bent portions 1A 'and 1B' contact the rubber elastic body 3 in accordance with the engine weight, the rebound-side gap when the engine is mounted can be made an appropriate value. is there. In the graph shown in FIG. 3, the solid line shows the engine mount device of the present invention, and the dotted line shows the conventional example shown in FIG. 4. As is clear from this graph, the top of the rubber elastic body 3 at the time of rebound is apparent. 3A side and bent part 1
Since the A 'and 1B' sides are in contact with each other, the amount of bending can be suppressed. As described above, according to the present invention, the outer cylinder is divided into two parts in the axial direction at locations corresponding to the two spaces, and the two parts on the top side of the substantially V-shaped rubber elastic body are formed. each bent by Rukoto folding the ends of the split outer cylinder to the inner cylinder side
The outer cylinder is press-fitted into a bracket that is attached to the engine or vehicle body to reduce the diameter of the outer cylinder, and the top side of the rubber elastic body is folded.
Ri bent portion side to contact against. Thus shorten the opposite side of the space expand the space of the top side of the rubber elastic body by the engine weight attached to the inner cylinder of the vehicle body or engine, even squeeze increasing the outer cylinder Kasei There is no possibility that the treated film or the adhesive is cracked and the rubber elastic body is peeled off. Furthermore, folding each by Rukoto folding the ends of each member is divided into two toward the inner cylinder side
Since the bent part is formed , when the outer cylinder is squeezed, the top side of the rubber elastic body abuts on the bent part side, or these bent parts act to push up the top part side. The degree increases. In addition, by contacting the top of the rubber elastic body with the bent portion before mounting the engine, the space on the top side of the rubber elastic body when the engine is mounted can be prevented from greatly expanding. And warpage of the engine during acceleration can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a member before press-fitting a bracket in which a rubber elastic body is provided between an inner cylinder and an outer cylinder. FIG. 2 is a cross-sectional view of a state in which the member of FIG. 1 is pressed into a bracket. FIG. 3 is a graph showing the relationship between load and deflection between the embodiment of the present invention and a conventional example. FIG. 4 is a cross-sectional view showing a conventional example. [Description of Signs] 1 outer cylinder 2 inner cylinder 3 rubber elastic body 3A top of rubber elastic body 4 bracket A, B space

Claims (1)

(1) A rubber elastic body having a substantially V-shaped cross section in a radial direction is provided between an inner cylinder and an outer cylinder inserted into the bracket, and the inner cylinder and the bracket are provided. Are mounted on either one or the other of the engine and the vehicle body, and two spaces penetrating in the axial direction are formed on both sides of the inner cylinder, F
In an engine mount device for elastically supporting an F-type horizontal engine with respect to a vehicle body, an outer cylinder is divided into two parts in a circumferential direction at locations corresponding to the two spaces, and a substantially V-shaped rubber elastic body is divided into two parts on the top side. each bent portion of the Rukoto bent been each end of the outer tube to the inner tube side
And press-fitting the outer cylinder into the bracket so as to reduce the diameter of the outer cylinder so that the top side of the rubber elastic body is brought into contact with the bent portion side, and the inner cylinder and the bracket are each one of the engine and the vehicle body and the other. The engine mount device is characterized in that the top portion side of the rubber elastic body is separated from the bent portion side by the engine weight by being attached to the engine mount device.