JPH08132892A - Engine mount fitting structure - Google Patents

Abstract

PURPOSE: To provide an engine mount fitting structure reducing contact noise and vibration at the time of operating an automobile engine. CONSTITUTION: In the fitting structure of an cylindrical engine mount connecting the body side and the engine side to each other through a bracket 11, an inner pipe 12 inserted through an inner cylinder 9 is journalled by a bracket 11 of such constitution that a connecting part 18 and a pair of vertical plates 10 spaced so as to be placed across an outer cylinder 8 are integrally molded, that stepped faces 21 recessed inward are respectively formed on the vertical plates 10 and that a hole 22 is opened in each stepped face 21 to form a bearing part. The periphery of the outer cylinder 8 is thereby enlarged, and even when the engine mount 7 is obliquely displaced in relation to the axis, a twist angle can be sufficiently taken so as to generate no contact with the bracket 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an engine mount, which absorbs the operating vibration of the engine at the installation location.

[0002]

2. Description of the Related Art Conventionally, an engine mounted on an automobile is fixed by an engine mount so that operating vibration of the engine is not transmitted to the vehicle body. As shown in FIGS. 11 to 13, an engine room 2 of a vehicle body 1 is surrounded by a dash panel 3, and an engine 6 is attached to an engine mount frame 4 via a plate-shaped engine mount 5. A cylindrical engine mount 7 is mounted between the dash panel 3 and the engine 6.

A cylindrical engine mount has an inner cylinder supported by a mount rubber inside an outer cylinder (Jitsuko Sho 62-2).
No. 2690), the outer peripheral surface of the outer cylinder is attached to one of the vehicle body side and the engine side, and the inner pipe inserted into the inner cylinder is attached to the other of the vehicle body side and the engine side to absorb vibration by the mount rubber.

As shown in FIG. 14, when fixing the outer cylinder 8 of the engine mount 7, this outer peripheral surface is welded to a bracket. When fixing the inner cylinder 9, the inner pipe 12 is pivotally supported by a bracket 11 having a pair of vertical plates 10, 10. The pair of vertical plates 10 are welded to the upright portions 14 that are continuously provided on the mounting plate 13 with a gap so as to straddle the outer cylinder 8. Spacers 15 are attached to the insides of the pair of vertical plates 10 for adjusting the gap.

[0005]

By the way, the engine mount acts to absorb shocks against vibrations and loads, but twists occur at the respective mounting positions. When the cylindrical engine mount 7 is twisted, the contact sound when the bracket 11 that supports the inner pipe 12 comes into contact becomes noise. Therefore, as shown in FIG. 15, by installing the side stoppers 16 on both sides of the engine mount 7, it is possible to reduce noise.

Further, since the movement of the engine mount 7 is not sufficient to damp vibrations when twisted, it is necessary to lengthen the inner pipe 12 against twisting. However, if the inner pipe 12 is lengthened by widening the distance between the pair of vertical plates 10, it will bend itself,
This may affect the spring characteristics of the engine mount 7.

Therefore, as shown in FIG. 16, the inner pipe 12 is reinforced by mounting spacers 17 smaller than the diameter of the engine mount 7 on both sides of the engine mount 7,
Or it can be shortened. Further, a large twisting angle of the engine mount 7 with respect to the axis can be obtained. However, in order to increase the twist angle of the engine mount 7, it is necessary to increase the thickness of the spacer 17, which increases the weight. In addition, the number of parts increases. Even when assembled, if the spacer 17 is not joined to the bracket 11 in advance by welding or the like, it becomes difficult to assemble with the engine mount 7, resulting in a considerable cost increase.

It is an object of the present invention to provide an engine mount mounting structure in which the twist angle of the engine mount can be sufficiently secured and the assembly is easy.

[0008]

In order to achieve the above object, the present invention straddles an outer cylinder of an engine mount in a mounting structure of a cylindrical engine mount connected to a vehicle body side and an engine side via a bracket. A pair of vertical plates and a connecting portion, which are spaced apart from each other, are integrally molded, and a bearing portion is formed on the pair of vertical plates such that the distance between the connecting portions is smaller than the distance between the connecting portions. And a bracket for axially supporting an inner pipe inserted through the inner cylinder of the engine mount by the bearing portion.

Further, the present invention is characterized in that a stepped surface which is recessed inwardly or a cylindrical portion which protrudes inwardly is formed on a pair of vertical plates by embossing, burring or bending to narrow the space between the bearing portions.

[0010]

Since the present invention is configured as described above, the space between the bearing portions of the engine mount is narrowed, the space between the outer cylinder of the engine mount and the bracket is widened, and the engine mount is displaced obliquely with respect to the shaft. Even if it does not contact the bracket. Also, when the bracket is manufactured, it is finished by integral molding.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1, 3 and 4, in order to support the cylindrical engine mount 7 from the lateral direction of the mount shaft, the bracket 11 that axially supports the inner pipe 12 that is inserted into the inner cylinder 9 is a pair of Vertical plates 10 and 10 and this connection
18 and the mounting portion 13 are integrally molded. A recess 19 is formed from the connecting portion 18 to the mounting portion 13, and a screw hole 20 is formed in the mounting portion 13. The edge of the mounting portion 13 is bent so as to have strength as shown in FIGS.

As shown in FIGS. 1 and 2, a pair of vertical plates 1
Gap a on both sides of the engine mount 7 between 0 and 10
In, indent the location of the vertical plate 10 corresponding to the axial center portion of the engine mount 7 by embossing,
A hole 22 is formed in the step surface 21 to form a bearing. As a result, the outer cylinder 8 does not come into contact with the bracket 11, and the twist angle b can be increased.

The above engine mount 7 and bracket 11
In the above, since the side stoppers and the spacers are not used, the bracket 11 can be easily manufactured by integral molding. Further, when the engine mount 7 is twisted, the contact sound with the bracket 11 disappears, and the operation of the engine mount 7 is not affected by the twist, so that the vibration can be efficiently absorbed. Further, unlike the conventional case, the twist angle b can be increased without using a side stopper or a spacer, but the weight does not increase and the cost can be reduced.

In addition to this, in order to narrow the interval between the axial center portions of the engine mount 7 by the vertical plate 10, as shown in FIGS. 23 is formed and the bearing portion of the inner pipe 12 is positioned inside. As a result, the space other than the bearing portion is widened, so that the twist angle b of the engine mount 7 can be further increased in design.

As shown in FIGS. 9 and 10, the connecting portion 18
The vertical plate 10 extending in parallel from the above may be bent by bending at a position close to the bearing portion inwardly to extend in parallel with a narrower interval, and a bearing portion may be formed by forming a hole in this surface. . This structure is easy to manufacture.

When the bracket 11 is attached to the engine side, the outer cylinder 8 of the engine mount 7 is fixed to the vehicle body side, and when the outer cylinder 8 is attached to the engine side, the bracket is fixed.
Secure 12 to the car body.

[0017]

Since the present invention is configured as described above, even when the engine mount is twisted by vibration, impact, etc., the outer cylinder does not contact the bracket, and contact noise can be prevented. Further, since a large twist angle can be obtained in design, vibration performance can be improved. Further, since the bracket can be easily manufactured and the number of parts is not increased, the cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view of a bracket for mounting an engine mount according to an embodiment of the present invention.

FIG. 2 is a sectional view of a main part of the bracket shown in FIG.

FIG. 3 is a plan view of the bracket shown in FIG.

FIG. 4 is a side view of the bracket shown in FIG.

5 is a cross-sectional view taken along line ee of the bracket shown in FIG.

6 is a sectional view taken along line ff of the bracket shown in FIG.

FIG. 7 is a perspective view of a bracket according to another embodiment.

8 is a cross-sectional view of a main part of the bracket shown in FIG.

FIG. 9 is a perspective view of a bracket of another embodiment.

10 is a cross-sectional view of a main part of the bracket shown in FIG.

FIG. 11 is a side view of a conventional automobile.

12 is a plan view of the automobile shown in FIG.

13 is a development view showing a mounting structure of the engine of the automobile shown in FIG.

FIG. 14 is a perspective view of a bracket for mounting a conventional engine mount.

15 is a cross-sectional view of essential parts showing a state where a distance between a pair of vertical plates of the engine mount shown in FIG. 14 is narrowed.

16 is a cross-sectional view of essential parts showing a state in which an interval between a pair of vertical plates of the engine mount shown in FIG. 14 is widened.

[Explanation of symbols]

 7 Engine mount 8 Outer cylinder 9 Inner cylinder 10 Vertical plate 11 Bracket 12 Inner pipe 18 Connecting part 21 Bearing part

Claims (2)

[Claims] 1. In a mounting structure for a cylindrical engine mount, which is connected to a vehicle body side and an engine side via a bracket, a pair of vertical plates and a connecting portion are arranged so as to straddle an outer cylinder of the engine mount. An inner pipe that is integrally molded and has bearing portions formed on the pair of vertical plates with a distance smaller than the distance between the connecting portions, and is inserted into the inner cylinder of the engine mount by the bearing portions of the vertical plates. A mounting structure for an engine mount, which is equipped with a bracket for supporting the shaft. 2. A mounting structure for a cylindrical engine mount connected to a vehicle body side and an engine side via a bracket, wherein a pair of vertical plates and a connecting portion are provided so as to straddle an outer cylinder of the engine mount. A stepped surface that is recessed inward or a cylindrical portion that projects inward is formed on the pair of vertical plates, and the inner cylinder of the engine mount is formed by a hole or a cylindrical portion formed in the stepped surface of the vertical plate. An engine mount mounting structure characterized by having a bracket that axially supports an inner pipe to be inserted.