JP3228047B2 - Vehicle 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 a mounting device for an engine for a vehicle, and more particularly, when a lateral movement of the engine occurs during a sharp turn or the like, the lateral movement of the engine is regulated by a side stopper. The present invention relates to a vehicle engine mounting device that avoids contact between a left side mount and a left side mount bracket and blocks transmission of engine vibration.

[0002]

2. Description of the Related Art When an engine is mounted on a vehicle, a mount bracket is interposed between a frame of the vehicle body and the engine, and the engine is supported by the mount bracket.

In mounting an engine, it is necessary to consider a transmission mounted on the engine. That is, the transmission is large and heavy like the engine, and has various rotating shafts disposed therein, and thus needs to be supported.

[0004] The mount bracket may be divided into a plurality of parts for the engine and the transmission, or may be formed integrally with the engine and the transmission. A shaped mounting bracket is used.

As a mounting device for the vehicle engine, there is one disclosed in Japanese Patent Application Laid-Open No. 5-338445. The vehicle power plant support device disclosed in this publication has a power plant bracket rotatably connected by a shaft member to a mount member fixed to the front side of a center member and a side member, and a length formed on the power plant bracket. From the hole, the shaft member is fitted to the mount member fixed to the rear side of the center member, the power plant is tilted and supported, and in the event of a collision, the power plant is escaped from the dash lower, and the amount of collapse of the skeleton member is increased, and Improves the shock absorbing effect of the body.

[0006] Further, there is one disclosed in JP-A-6-87333. The support structure of the power unit disclosed in this publication, the vehicle body side mounting points of all the power unit support devices interposed between the power unit and the vehicle body,
It is located closer to the node of the body bending vibration than the center of gravity of the power unit, reducing the effect of the body bending vibration on the power unit and improving idle vibration.

[0007]

As shown in FIG. 19, in a conventional vehicle engine mounting device, as shown in FIG.
2, a left side frame 106 and a right side frame 108 extending in the front-rear direction, and a center member 114 extending in the front-rear direction of the vehicle 102 at a central portion of the vehicle 102.
Is provided.

A right side mount 116 is provided between the right side frame 108 and the engine 160, and a front mount 118 and a rear mount 120 are provided between the center member 114 and the engine 160. The left side mount 122 is interposed between the 160 transmissions 162.

At this time, the right side mount 116 and the left side mount 122 are disposed so that the direction of the higher spring constant is set to the direction of the crankshaft (not shown) of the engine 160.
2 mainly regulates the lateral movement of the engine 160.

However, as shown in FIG. 19, when considering a layout in which the right side mount 116 and the left side mount 122 are arranged so that the direction with the higher spring constant is the crankshaft direction of the engine 160, Frame 1
When the left side mount 122 is disposed above the left side frame 106, a battery, a fuse box, a reserve tank or other components (not shown) other than the left side mount bracket 124 can not be disposed above the left side frame 106, so that practical use is not possible. There is a disadvantage that it is disadvantageous.

Further, the left side mount is disposed so as to be substantially orthogonal to the direction in which the right side mount is disposed, that is, twisted by 90 degrees. As shown in FIG. In some cases, a side stopper 164 integrated with a mount is provided.

However, when the left side mount is arranged below the left side frame while keeping the arrangement direction of the left side mount, a large gap is required between the left side frame and the transmission. Therefore, measures such as expansion of the engine room must be taken, and there is a disadvantage that the space cannot be effectively used.

Further, when the left side mount is provided with a mount-integrated side stopper, the engine vibration is easily transmitted from the side stopper to the vehicle body when the lateral movement of the engine becomes large. However, there is a disadvantage that it is disadvantageous in practical use.

[0014]

In order to eliminate the above-mentioned disadvantages, the present invention provides a left side frame and a right side frame which extend in the front-rear direction of the vehicle below the engine room of the vehicle. A center member extending in the front-rear direction of the vehicle is provided at a central portion, a right side mount is provided between the right side frame and the engine, and a front mount and a rear mount are provided between the center member and the engine. In a vehicle engine mounting device having a left side mount interposed between the left side frame and the engine transmission, the left side mount is disposed below the left side frame and the left side The mounting direction of the mount is disposed so as to be substantially orthogonal to the mounting direction of the right side mount, A side stopper is integrally provided on the front mount and the rear mount, and a clearance between the left side mount and a left side mount bracket supporting the left side mount is maximized in a lateral direction of the engine, which is regulated by the side stopper. It is characterized in that it is set to be larger than the movement amount.

[0015]

According to the invention described above, when a lateral movement of the engine occurs during a sharp turn or the like, the lateral movement of the engine is controlled by a side stopper integrally provided on the front mount and the rear mount. It prevents the transmission of engine vibration by avoiding contact with the left side mount and left side mount bracket.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 16 show an embodiment of the present invention. 1 and 2, 2 is a vehicle, 4 is an engine room, 6 is a left side frame, 8 is a right side frame, and 10 is a front cross member.

In this embodiment, the suspension system of the vehicle 2 is of an inertia main shaft support system or a similar system, and the lateral movement of an engine (not shown) is restricted by a cylindrical mount as shown in FIG. Used for mounting structure.

As shown in FIGS. 1 and 2, a left side frame 6 and a right side frame 8 extending in the front-rear direction of the vehicle 2 are disposed below the engine room 4 of the vehicle 2. , 8, the front side of the vehicle 2 (also referred to as “front” or “FRONT”) is connected by a front cross member 10 on the vehicle body side.

At the center of the front cross member 10, there is provided a center member 14 extending to the rear side of the vehicle 2 via a member mounting rubber 12, and a right side mount 8 is provided between the right side frame 8 and an engine (not shown). 1
6 and a front mount 18 and a rear mount 2 between the center member 14 and an engine (not shown).
A left side mount 22 is interposed between the left side frame 6 and a manual transmission (not shown) of an engine (not shown).

The left side mount 22 is disposed at a lower portion of the left side frame 6 and the disposition direction of the left side mount 22 is changed to the right side mount 16.
The front mount 18 and the rear mount 20 are integrally provided with a side stopper 26, and the left side mount 22 and the left side support the left side mount 22. The clearance C with the mount bracket 24 is set to be larger than the maximum lateral movement of the engine (not shown) regulated by the side stopper 26.

More specifically, as shown in FIG. 1, the left side mount 22 is disposed at a lower portion of the left side frame 6, and as shown in FIGS. The direction in which the spring constant is high is set to be the direction of the crankshaft (not shown) of the engine (not shown), and the direction in which the left side mount 22 is disposed is substantially orthogonal to the direction in which the right side mount 16 is disposed. Twisted 90 degrees.

As shown in FIG. 3 and FIG. 14, the left side mount 22 is
4 and the left side mount bracket 24 includes a first mount bracket 24-1 having a U-shaped cross section and a second mount bracket 24-2 having a flat plate shape.

As shown in FIG. 14, a left side mount 22 and a first mount bracket 24 having a U-shaped cross section are provided.
The clearance C is set to be larger than the maximum lateral movement amount of the engine (not shown) regulated by the side stopper 26.

Further, as shown in FIGS. 5 and 10 to 13, the front mount 18 and the rear mount 20 are integrally provided with a side stopper 26, and the side stopper 26 is formed of a first, substantially arc-shaped cross section. It is formed by the second side stoppers 26-1 and 26-2. The regulation of the lateral movement of the engine is controlled by the right side mount 16.
The first and second side stoppers 26-1 and 26-2, which are attenuated by the spring force of the front mount 18 and the rear mount 20, and are side stoppers 26 provided integrally with the front mount and the rear mount 20. I do.

The center member 14 is shown in FIGS.
As shown in FIGS. 6A and 6B, they are attached to the vehicle body from below by fixing means 28 such as bolts.

The front mount 18 and the rear mount 20 are attached to the center member 14 floating-mounted on the vehicle body by a rubber bush, unlike the left side mount 22 which is directly attached to the vehicle body by fixing means such as bolts. In addition, the engine vibration is hardly transmitted to the vehicle body.

Reference numeral 30 denotes a front suspension mounting portion, 32 denotes a battery, 34 denotes a fuse box, 36
Is a water reserve tank.

Next, the operation will be described.

When a lateral movement of the engine occurs during a sharp turn or the like, the lateral movement of the engine is controlled by the first and second side stoppers 26 integrally provided on the front mount 18 and the rear mount 20. 2-side stopper 26-
1, 26-2.

The contact between the left side mount 22 and the first mount bracket 24-1 of the left side mount bracket 24 is avoided, and transmission of engine vibration is cut off.

Thus, the left side mount 22 can be disposed at the lower portion of the left side frame 6,
The space on the left side frame 6 can be effectively used as a space for disposing the battery 32 and other components.

Further, by arranging the left side mount 22 so as to be substantially orthogonal to the arrangement direction of the right side mount 16, the lateral movement of the engine is restricted and the engine vibration is transmitted. The first and second side stoppers 26-1 and 26-2, which are side stoppers 26 integrally provided on the front mount 18 and the rear mount 20 of the center member 14, which are difficult to perform, can perform engine vibration toward the vehicle body. It is difficult to transmit, which is practically advantageous.

Further, the clearance C between the left side mount 22 and the left side mount bracket 24 supporting the left side mount 22 is adjusted by the side stopper 2.
6 is set to be larger than the maximum lateral movement amount of the engine, which is restricted by the clearance 6, so that the clearance C allows the left side mount 22 to move when the engine moves in the lateral direction.
Contact with the left side mount bracket 24 can be reliably prevented.

Further, since the side stopper 26 is provided integrally with the front mount 18 and the rear mount 20, the manufacture is easy, the cost can be kept low, and it is economically advantageous.

Further, the side stopper 26 is moved to the first,
By being formed by the second side stoppers 26-1 and 26-2, the shape of the side stopper 26 can be changed to reduce the shock.

It should be noted that the present invention is not limited to the above-described embodiment, and various application modifications are possible.

For example, in the embodiment of the present invention, the left side mount bracket 24 for supporting the left side mount 22 is described for a manual transmission.
It is also possible to use a left side mount bracket 40 for a three-speed automatic transmission as shown in FIG. 17 or a left side mount bracket 50 for a four-speed automatic transmission as shown in FIG.

In the embodiment of the present invention, the side stoppers are constituted by the first and second side stoppers having a substantially arcuate cross section. However, the side stoppers may have a shape other than a substantially arcuate cross section or a number other than two. It is also possible to change to a configuration that can alleviate the shock.

Further, in the embodiment of the present invention, a side stopper is not provided on the left side mount. However, if there is a concern that a large and instantaneous lateral movement of the engine may be caused by various factors, the left side mount may be provided. It is also possible to adopt a configuration in which a side stopper is provided on the mount.

[0041]

As described above in detail, according to the present invention, a left side frame and a right side frame extending in the front-rear direction of the vehicle are provided below the engine room of the vehicle, and these left and right side frames are connected to the vehicle body. A center member extending in the front-rear direction of the vehicle is provided at a central portion, a right side mount is provided between the right side frame and the engine, and a front mount and a rear mount are provided between the center member and the engine. In a vehicle engine mounting device in which a left side mount is interposed between a frame and an engine transmission, the left side mount is disposed at a lower portion of the left side frame, and the direction of the left side mount is changed to the right side. Arranged so as to be almost perpendicular to the mount arrangement direction, and integrated with the front mount and rear mount Since the clearance between the left side mount and the left side mount bracket supporting this left side mount is set to be larger than the maximum lateral movement of the engine regulated by the side stopper, The side mount can be disposed below the left side frame, and the space on the left side frame can be effectively used as a space for disposing other components. Also, by arranging the left side mount in a direction substantially perpendicular to the direction in which the right side mount is arranged, it is possible to restrict the lateral movement of the engine to the center member which is difficult to transmit engine vibration. This can be performed by a side stopper provided integrally with the front mount and the rear mount, and it is difficult to transmit engine vibration to the vehicle body side, which is practically advantageous. Furthermore,
By setting the clearance between the left side mount and the left side mount bracket supporting the left side mount to be larger than the maximum lateral movement amount of the engine regulated by the side stopper, the engine can be moved in the lateral direction. When moving, the clearance can reliably prevent contact between the left side mount and the left side mount bracket. Furthermore, since the front mount and the rear mount are provided with the side stoppers integrally, the manufacture is easy, the cost can be kept low, and it is economically advantageous. Further, when the side stopper is formed by the first and second side stoppers having a substantially circular arc cross section, the shape of the side stopper can be changed to reduce the shock.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a vehicle engine mounting device according to an embodiment of the present invention.

FIG. 2 is a schematic plan view of a mounting device for a vehicle engine.

FIG. 3 is an assembled perspective view of a mounting device for a vehicle engine.

FIG. 4 is a perspective view of left and right side mounts.

FIG. 5 is a schematic configuration diagram showing side stoppers of front and rear mounts.

FIG. 6 is a front view of a front mount.

FIG. 7 is a front view of another example of the front mount.

FIG. 8 is a front view of a rear mount.

FIG. 9 is a front view of another example of the rear mount.

FIG. 10 is a front view of a front mount.

FIG. 11 is a left side view of the front mount.

FIG. 12 is a front view of a mount portion of the front mount.

FIG. 13 is a central longitudinal sectional view of FIG.

FIG. 14 is a schematic view of a left side mount bracket.

FIG. 15 is a schematic enlarged view showing an attached state of a rear end portion of a center member.

FIG. 16 is a schematic enlarged view showing an attached state of a front end portion of a center member.

FIG. 17 is an assembled perspective view of a left side mount bracket for a three-speed automatic transmission, showing another first embodiment of the present invention.

FIG. 18 is an assembled perspective view of a left side mount bracket for a four-speed automatic transmission, showing another second embodiment of the present invention.

FIG. 19 is a schematic front view of a vehicle engine mounting device showing the prior art of the present invention.

FIG. 20 is a schematic configuration diagram showing a side stopper of a left side mount.

[Explanation of symbols]

 2 Vehicle 4 Engine room 6 Left side frame 8 Right side frame 10 Front cross member 12 Member mount rubber 14 Center member 16 Right side mount 18 Front mount 20 Rear mount 22 Left side mount 24 Left side mount bracket 24-1 First mount bracket 24-2 Second Mount Bracket 26 Side Stopper 26-1 First Side Stopper 26-2 Second Side Stopper 28 Fixing Means 30 Front Suspension Attachment 32 Battery 34 Fuse Box 36 Water Reserve Tank

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-5-338445 (JP, A) JP-A-6-87333 (JP, A) JP-A-6-17877 (JP, A) JP-A-6-87877 340229 (JP, A) JP-A-62-12418 (JP, A) JP-A-2-60615 (JP, U) JP-A-61-169825 (JP, U) (58) Fields investigated (Int. ⁷ , DB name) B60K 5/00-5/12 B62D 21/00 F16F 15/08

Claims (1)

(57) [Claims] 1. A left side frame and a right side frame extending in the front-rear direction of a vehicle are provided at a lower portion of an engine room of the vehicle, and these left and right side frames are provided so as to communicate with a vehicle body side, and extend in a central portion in the front-rear direction of the vehicle. A center member is provided, a right side mount is provided between the right side frame and the engine, a front mount and a rear mount are provided between the center member and the engine, and a left side mount is provided between the left side frame and a transmission of the engine. In a vehicle engine mounting device having a mount interposed, the left side mount is disposed at a lower portion of a left side frame, and a direction in which the left side mount is disposed is substantially equal to a direction in which the right side mount is disposed. Arranged to be orthogonal,
Integrated with the front mount and the rear mount
A side stopper is provided, and a clearance between the left side mount and a left side mount bracket supporting the left side mount is regulated by the side stopper.
That mounting device for a vehicle engine, wherein the set to larger than the maximum amount of movement in the transverse direction of the engine.