JP2552959Y2 - Engine mounting device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine mounting device used to support an engine on a vehicle body by absorbing vibration.

[0002]

2. Description of the Related Art FIGS. 4 and 5 show an example of a conventional engine mounting apparatus. In this engine mounting device, a rubber bush 3 is interposed between an outer pipe 1 and an inner pipe 2 having a shorter diameter than the outer pipe 1, and the outer pipe 1 is press-fitted into, for example, a mounting bracket (not shown) on the engine side. The inner pipe 2 is attached to a bracket (not shown) on the vehicle body side. In this case, a pair of through holes 5, 6 are formed in the bush 3 with the insertion hole 4 of the inner pipe 2 therebetween, so that the bush 3 is easily bent. In addition, a bolt (not shown) that connects the mounting bracket and the bracket on the vehicle body side to be displaceable within a certain range is inserted into the inner pipe 2. In this engine mounting device, when the vehicle body and the engine move independently of each other, or when an impact or vibration occurs due to a torque reaction force of the engine, the bush 3 is bent to absorb the impact or vibration energy and move toward the vehicle body. The transmission of large vibrations is suppressed (see Japanese Utility Model Laid-Open No. 60-97443 as an engine mounting device of a type in which a pair of through holes are formed in a bush. An actual engine mounting device of a type in which an outer pipe is provided). Kimiaki
See JP 63-17877. ).

[0003]

Since the above-mentioned engine mounting device is used by being press-fitted into a mounting bracket, the process involves a press-fitting step in the manufacturing process, and the number of working steps increases accordingly. This has led to an increase in manufacturing costs. In addition, the direction in which the load acts (the above-described direction of arrow A) must be limited and used, and it is necessary to set the direction of the bush 3 in advance at the time of press-fitting.

[0004] The present invention has been made in view of the above circumstances, and an engine mounting apparatus capable of reducing manufacturing costs and absorbing vibration loads from a wide range of directions with a reduced number of parts. The purpose is to provide.

[0005]

According to the present invention, in order to achieve the above object, the present invention has a substantially annular shape and a half of the cross section.
A bush made of an elastic material having a substantially semicircular shape;
The vehicle side bracket and engine side bracket
Of the bush is inserted into one of the shaft members.
On the outer peripheral side, the body side bracket and engine side bracket
An engine mounting device to attach the other
Therefore, when the bush forms an annular protrusion on the top side,
Both, at both ends of the bush, the protrusion of the bush
Direction perpendicular to the through hole with a diameter larger than the maximum diameter
Forming a disk-shaped side stopper extending to
The mounting part of the bracket is between the pair of side stoppers
It is characterized in that it can enter .

[0006]

According to this structure, the bush and the protrusion are
Due to the annular shape, the through hole
Non-linear elastic characteristics in the direction perpendicular to the inserted shaft member
With the same elastic modulus in the circumferential direction.
Will do. Also, at both ends of the bush,
The diameter is larger than the maximum diameter of the projection and is orthogonal to the through hole
To form a disk-shaped side stopper extending in the direction
Bracket mounting part enters between a pair of side stoppers
The engine side bracket and engine
The bush through hole direction (the longitudinal length of the shaft member)
Direction), the engine side bracket
Check that the direct contact with the vehicle side bracket is
Pa prevent.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of an engine mounting apparatus according to the present invention will be described with reference to FIGS. In the drawing, reference numeral 7 denotes a bush made of an elastic material formed in a substantially annular shape so as to be insertable into a bracket 20 on the engine side, and an inner pipe 9 to be attached to a bracket on the vehicle body (not shown) is formed in a hole 8 of the bush 7. It is designed to be inserted. An annular convex portion 10 is formed in a central portion on the outer peripheral side of the bush 7, and the bush 7 is held so that the bracket 20 on the engine side is fitted to the annular convex portion 10. It has become. Side stoppers 11 extending in a direction perpendicular to the axis are provided at both ends of the bush 7.
Is provided integrally with the bush 7, and the bush 7
When the is bent, it comes into contact with a part of the bracket 20 on the engine side or the like to prevent the relative displacement between the bracket on the vehicle body side and the bracket on the engine side from becoming unnecessarily large.

[0008] In the engine mounting device configured as described above, the bush 7 is attached to the bracket 20 on the engine side.
When the vehicle body and the engine move independently of each other, or when an impact or vibration is generated by the torque reaction force of the engine, the bush 7 is bent to absorb the impact or vibration energy, and The transmission of large vibrations is suppressed. In the above-described conventional device, the direction in which vibration is suppressed by the pair of through holes 5 and 6 is limited to one front-back direction. In the present invention, the bush 7 is formed in an annular shape. However, the direction in which the vibration is suppressed is not limited to the front-back direction, and the vibration can be suppressed in any direction perpendicular to the axis. Accordingly, even if the mounting is performed without setting the mounting direction to the left, the vibration loads from various directions can be reliably absorbed, so that it is not necessary to take much time for the mounting.

When the bush 7 bends by a predetermined amount or more, the side stopper 11 comes into contact with a part of the bracket 20 on the engine side, so that the relative displacement between the brackets on the engine side and the body side becomes larger than necessary. Although it is prevented, since the side stopper 11 is provided integrally with the bush 7, the above-described displacement suppression at the time of absorbing vibration energy can be achieved by reducing the number of components. Since the bush 7 and the side stopper 11 are integrally formed, the number of assembling steps can be reduced.

In a conventional engine mounting device, since it is press-fitted into a mounting bracket for mounting,
Although the number of working steps is increased by that amount including the press-fitting step, which leads to an increase in manufacturing cost. However, in the engine mounting apparatus of the present embodiment, the bush 7 is directly inserted into the bracket 20 on the engine side for mounting. In addition, the press-fitting step can be omitted, and the manufacturing cost can be reduced accordingly. Further, by omitting the outer pipe which was required in the conventional device, the material cost and the manufacturing cost thereof can be reduced.

The dimensions of each part of the apparatus were set as follows, and a load in the Z direction was applied as shown in FIG. 2 to measure the amount of deflection. As a result, data as shown in FIG. 3 could be obtained. did it. That is, the diameter D of the hole 8 of the bush 7 is 20 mm,
The diameter E of the annular projection 10 is 63.6 mm, and the diameter F of the side stopper 11 is
80mm, length G of inner pipe 9 is 60mm, inner pipe 9
The actual measured data of the amount of deflection was obtained with the hole diameter H of 10.2 mm.

In the above embodiment, the case where the inner pipe 9 is mounted on the bracket on the vehicle body side and the bush 7 is mounted on the bracket 20 on the engine side is described as an example. However, the present embodiment is not limited to this. Alternatively, the inner pipe 9 may be attached to a bracket on the engine side, and the bush 7 may be attached to a bracket on the vehicle body side.

[0013]

[Effect of the invention The present invention, since the structure is an engine mounted quenching apparatus as described above, bushing and
By forming the protrusion in an annular shape, the through hole
Non-linear elasticity in the direction perpendicular to the shaft member inserted in the through hole
It has the characteristics and the same elasticity in the circumferential direction.
In the direction orthogonal to the shaft member.
To suppress vibration in any direction.
Accordingly, even if the bush is attached without carefully setting the mounting direction to the left, vibration loads from various directions can be reliably absorbed. Also, the bush
Larger than the maximum diameter of the bushing projection
Disc-shaped sides that extend in the direction perpendicular to the through hole with a diameter
A topper is formed, and the mounting portion of the other bracket is
Between the id stopper and the engine side block.
The racket and, consequently, the engine passes through the bush
Unnecessarily large in the through-hole direction (longitudinal direction of the shaft member)
The engine side block through the side stopper.
The racket and the bracket on the vehicle
Since the hopper prevents vibration, engine vibration can be suppressed.
You. Further, the vibration in the direction orthogonal to the through hole as described above.
Movement and vibration in the direction of the through-hole
It is played by the bush which integrally formed the topper
Thus, the number of parts can be reduced. Also, the bush
Of the engine side bracket and the body side bracket directly
It can be installed by inserting it into the shaft member attached to one side
Press the outer pipe into the mounting bracket
The press-fitting process required by the type of prior art can be omitted,
In addition, the manufacturing cost can be reduced accordingly. Also,
By omitting the outer brackets required by the prior art of this type , the material costs and the manufacturing costs thereof can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an engine mounting device according to an embodiment of the present invention.

FIG. 2 is a plan view showing the engine mounting device.

FIG. 3 is a characteristic diagram showing a load-bending amount of the engine mounting device.

FIG. 4 is a front view showing an example of a conventional engine mounting device.

FIG. 5 is a plan view showing the engine mounting device.

[Explanation of symbols]

 7 Bush 8 hole 9 Inner pipe 11 Side stopper 20 Bracket on engine side

Claims (1)

(57) [Scope of request for utility model registration] 1. A substantially annular shape, and half of the cross section is
A bush made of an elastic material having a substantially semicircular shape;
The vehicle side bracket and engine side bracket
Of the bush is inserted into one of the shaft members.
On the outer peripheral side, the body side bracket and engine side bracket
An engine mounting device to attach the other
Therefore, when the bush forms an annular protrusion on the top side,
Both, at both ends of the bush, the protrusion of the bush
Direction perpendicular to the through hole with a diameter larger than the maximum diameter
Forming a disk-shaped side stopper extending to
The mounting part of the bracket is between the pair of side stoppers
An engine mounting device characterized in that it can be inserted.