JP2689764B2 - Engine support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to an engine support device.

[0002]

2. Description of the Related Art As a conventional engine support device, there is, for example, one shown in FIGS.
196123).

FIG. 12 is a side view, FIG. 13 is a sectional view of the emergency separating means, and FIG. 14 is a sectional view taken along the line bb of FIG. The engine 101 includes a frame member 102 and a support device 1 at the front and rear thereof
03, and the upper portion thereof is supported by the dash panel 106 by the locator rod 105 via the emergency separating means 104. When the vehicle collides and the engine rotates, the emergency separating means 104 is pulled by the locator rod 105, the emergency separating means deforms, absorbs impact energy, and separates the engine 101 from the vehicle body (dash panel 106). Was doing.

[0004]

However, in such a conventional engine support device, when the impact more than a predetermined amount is applied due to the deformation of the emergency separating means 104, the engine supporting device is substantially separated from the engine 101. Since the vehicle body (dash panel 106) is separated from the vehicle body, there is a problem that predetermined behavior does not occur unless the material properties are set to the set values, and also when deformation is caused by mistake. There was a problem that could not be reused.

The present invention has been made in view of such conventional problems, and provides an engine support device which facilitates rotation of an engine in the event of a vehicle collision and prevents the engine from dropping during a malfunction. The purpose is to do.

[0006]

SUMMARY OF THE INVENTION The present invention provides an engine for a vehicle.
The front and rear engine mounts are attached to the frame members that extend in both front and rear directions.
And the left and right engine mounts
The rear engine mount in the event of a vehicle frontal collision
To remove the engine from the left and right engine mounts.
The engine support device is designed to rotate around
The engine mount after the above is the engine side
The mount provided on either side of the frame member side.
To insulator, bracket provided on the other side,
Connects the mount insulator and the bracket
And a shaft member for rotating the mount member.
The first shaft portion held by the insulator and the bracket.
And a second shaft portion held by
So that it can be removed by the movement of the engine in the direction of rotation
The second shaft is engaged and is in this disengaged state.
Urging the part to separate axially from the first shaft part.
Urging means, and the bracket includes a first shaft portion of
The direction in which the ends are engaged and held and the engine is rotated.
An engaging groove is formed in which the first shaft portion can be detached.
It is characterized by.

When a vehicle crashes into the front, the engine will move to the left and right.
Try to rotate around the engine mount. This dynamic
By the first shaft part in the engine mount later
The engagement with the second shaft portion is released. And by the biasing means
Is the second shaft portion biased in the axial direction the first shaft portion?
From the axial direction. This makes Mount Insule
Since the engine and bracket are separated, the engine
It can be easily rotated around the engine mount, and
Entry is prevented. The end of the first shaft is a bracket
Although it is engaged with the engagement groove of the
The end of the first shaft part naturally comes out of the engagement groove.
And

Also, due to engine vibration, etc.
The decoupling mechanism malfunctions, and the first shaft part and the second shaft part
In the case of separation, the engine will rotate
Since no force is applied to the
Continue to engage with the engaging groove of the slot. This will mount
The insulator and bracket cannot be completely separated,
Gin never falls.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a side view showing an embodiment of the present invention, and FIG. 2 is A- of FIG.
FIG.

The engine 1 is supported by a center member 2, which is a frame member of the vehicle body extending in the front-rear direction of the vehicle, at a front-rear position of the engine by a front engine mount 3 and a rear engine mount 4, and the upper part of the engine is mounted on the vehicle body. The left side engine mount 6 and the right side engine mount 7 support the constituent front side members 5.

[0011] The mount insulator 9 is attached to the frame side bracket 8 and the engine side bracket 10
Are connected to each other by fastening bolts 12 via a mount insulator inner cylinder 11.

The fastening bolt 12 as the shaft member is
The first shaft portion fitted in the inner cylinder 11 of the insulator.
The central part 14 and the left and right brackets 10, respectively.
3 minutes to the left and right end parts 13 and 15 which are the combined second shaft part
Cracked. A bias is applied between the left end portion 13 and the central portion 14.
As a means, the spring 16 in a compressed state is
Between the end portion 15 and the end portion 15 is also in a compressed state as a biasing means.
Certain springs 17 are respectively interposed to form a decoupling mechanism.
doing.

Further , as shown in FIG. 3, the engine side bracket 10 has an engaging groove for holding the central portion 14.
The counterbore 18 is bored . This counterbore 18 is
It is formed along the rotation direction of engine 1.
And the mount insulator in which the central portion 14 is fitted.
Both ends of the inner cylinder 11 are engaged. This counterbore 18 and Mau
The engagement with the insulator inner cylinder 11 constitutes a fall prevention mechanism at the time of malfunction.

Further, the key 19 is the head of one end of the fastening bolt 12 (FIG. 2 left) is, the engine-side bracket 1
0 is provided with a key groove 20 for fastening the fastening bolt 12
The other end, the key 22 key hole 21 is drilled is inserted as shown in FIG.

At the time of fastening, the key 19 on the head of one end of the fastening bolt 12 is attached to the key groove 2 of the engine side bracket 10.
0 into the key hole 21 at the other end of the fastening bolt 12
Insert 2 and tighten. Accordingly, it is possible to conclude by applying a tightening torque without rotating the fastening bolt 12 when fastening, takes excessive tightening torque, fastening bolts 12
Can be prevented from shearing. 23 is a cross member and 24 is a dash panel.

Next, the operation will be described with reference to FIGS. As shown in FIG. 5, the engine 1 located at the position indicated by the chain double-dashed line due to a vehicle collision is centered on the upper left and right engine mounts 6 and 7 as the center member 2 extending in the vehicle front-rear direction is deformed. The engine side bracket 10 moves in the direction indicated by the arrow B in FIGS. 2 and 6.

Then, due to the force, the fastening bolt 12
The left and right end portions 13 and 15 of the are displaced in the arrow B direction. Then, as shown in FIG. 7, the left end portion 13 moves in the direction of arrow C by the restoring force of the spring 16 and the connection with the central portion 14 is released. Similarly, the right end portion 15 is also uncoupled from the central portion 14,
Since the left and right end parts 13 and 15 come off from the central part 14,
The engine 1 rotates around the left and right engine mounts 6, 7 as shown by the solid line in FIG.

At this time, as shown in FIG. 3, since the counterbore 18 in contact with the engine side bracket 10 of the mount insulator inner cylinder 9 which is the engine drop prevention mechanism is bored in the rotation direction of the engine 1, the engine 1 is easier to operate. Can be rotated to.

As described above, according to the present invention, the engine side bracket 10 is reliably separated from the frame side bracket 8 at the time of a frontal collision of the vehicle, and the engine 1 is easily displaced.

Further, even if the left and right end portions 13 and 15 of the fastening bolt 12 are misaligned from the central portion 14 by accident, the counterbore shown in FIG. Since the mount insulator inner cylinder 9 is in contact with the mount insulator inner cylinder, the mount insulator inner cylinder 9 shares the supporting load of the engine 1. Therefore, the engine 1 does not immediately tilt and fall.

Further, when the engine mount supports torque reaction force, etc., the mount insulator inner cylinder 11
That most of the load can be supported with the fastening bolts 12
Since the spring constants of the springs 16 and 17 built in are set to be large to some extent to enhance the rigidity of the fastening bolt against shearing, the fastening bolt 12 does not come off.

8 and 9 show another embodiment of the present invention. In this embodiment, the restoring force of the spring is used as the urging means in the previous embodiment, but an actuator such as an inflator that detects a collision of the vehicle and operates is used to pull the fastening bolt in the left-right direction. It is the one.

First, the structure will be described. Fastening bolt 12
A tension member 25 having a wire 26 attached thereto is fixed to the heads of the left and right ends 13, 15. The wire 26 is connected to an inflator 28 that operates by a signal from the collision detection sensor 27.

Next, the operation will be described with reference to FIGS. When a vehicle collides, a force in the direction indicated by arrow B acts on the engine side bracket 10 as shown in FIG. Therefore, the left end portion 13 and the right end portion 15 are displaced from the central portion 14.

On the other hand, when the vehicle collides as shown in FIG. 8, the collision detection sensor 27 detects the collision and sends a signal to the inflator 28. Then, the inflator 28 operates and pulls the left end portion 13 and the right end portion 15 of the fastening bolt 12 through the wire 26 and the tension member 25 in both left and right directions as indicated by arrow E. Therefore, as shown in FIG. 11, the left end portion 13 and the right end portion 15 are disconnected from the central portion 14. In this way, the engagement between the engine 1 and the vehicle body (center member 2) is surely disengaged, and the rotation of the engine is performed without hindrance.

According to this embodiment, the same effect as that of the above-described embodiment can be obtained, and further, the disengagement of the engine and the vehicle body can be released.
It can be done faster and more reliably.

[0027]

Since the present invention is constructed as described above, according to the present invention, the engagement between the engine and the vehicle body can be reliably disconnected when the vehicle collides, and the displacement of the engine can be facilitated. .

Further, even if the engine malfunctions, the engine will not drop immediately.

[Brief description of the drawings]

FIG. 1 is a side view showing an outline of an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a perspective view showing a counterbore portion of an engine side bracket according to an embodiment of the present invention.

FIG. 4 is a view showing a pin groove and a pin at an end portion of a fastening bolt according to the embodiment, FIG. 4 (a) is a side view showing a state in which the pin is inserted, and FIG. 4 (b) is a pin groove. The top view shown, FIG.4 (c) is a perspective view which shows a pin.

FIG. 5 is a side view for explaining the movement of the engine at the time of a collision in the same embodiment.

FIG. 6 is a side sectional view for explaining the action of the fastening bolt at the time of collision in the same embodiment.

FIG. 7 is a side sectional view for explaining the action of the fastening bolt at the time of a collision of the same embodiment.

FIG. 8 is a block diagram showing the outline of another embodiment of the present invention.

FIG. 9 is a sectional view showing an engine mount portion of another embodiment of the present invention.

FIG. 10 is a side sectional view for explaining the action of the fastening bolts at the time of a collision of another embodiment.

FIG. 11 is a side sectional view for explaining the action of the fastening bolt at the time of a collision of another embodiment.

FIG. 12 is a side view showing a conventional example.

FIG. 13 is a sectional view of an emergency separating means according to a conventional example.

14 is a cross-sectional view taken along the line bb of FIG.

[Explanation of symbols]

 1 ... Engine 4 ... Rear engine mount 6, 7 ... Left and right engine mount 9 ... Mount insulator 10 ... Engine side bracket 11 ... Mount insulator inner cylinder 12 ... Fastening bolt 13 ... Fastening bolt left end 14 ... Fastening Central part of bolt 15 ... Right end part of fastening bolt 16, 17 ... Spring 18 ... Counterbore 25 ... Inflator

Claims (1)

(57) [Claims] 1. An engine is supported by front and rear engine mounts on a frame member extending in the vehicle front-rear direction,
Supported by the left and right engine mounts to the vehicle body, the vehicle during a frontal collision, the engine supporting apparatus of the engine by releasing the coupling of the engine mount and to rotate about the engine mount of the left and right rear engine after the Mount on the engine side or
Mount-in provided on either side of the frame member
The insulator, the bracket provided on the other side, and the
A shaft connecting the und insulator and the bracket
A member, the shaft member being retained by the mount insulator.
And a second shaft held by the bracket.
And the direction of rotation of the engine.
It is engaged so that it can be disengaged by the movement of
In this detached state, the second shaft is axially moved from the first shaft.
Has an urging means for urging the bracket to separate in the opposite direction, and holds the end of the first shaft portion in engagement with the bracket.
And the first shaft portion is in the direction accompanying the rotation of the engine.
An engine support device, wherein a disengageable engagement groove is formed .