JPS633561Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to the front body structure of an automobile, and in particular, the invention relates to a front body structure of an automobile, and in particular, an automobile engine is mounted horizontally in an engine compartment formed at the front of the automobile body.
The present invention also relates to a front body structure of a front engine/front drive type automobile that drives the front wheels.

In front-engine, front-drive vehicles (hereinafter referred to as FF vehicles), the engine, transmission, and differential are concentrated in the front body of the vehicle. If the torsional rigidity of the vehicle body is not sufficiently high, it may cause muffled noise in the vehicle interior.

The present invention was made to solve the above-mentioned conventional inconveniences, and in the above-mentioned FF type automobile,
An object of the present invention is to provide a front body structure for an automobile that can reduce muffled noise inside a vehicle cabin by improving the torsional rigidity of the vehicle body.

According to the present invention, such a purpose is achieved by installing the left side of the engine room in a front-wheel drive vehicle such as the one described above.
Along the right side wall in the longitudinal direction of the vehicle, there are a pair of left and right front side members with a closed cross-section structure extending along the right side wall, and a pair of front side members, the front side members,
A center member is provided at approximately the center of the engine room in the vehicle width direction and extends in the longitudinal direction of the vehicle, bypassing the oil pan of the engine. This is achieved by horizontally suspending a reinforcing linear rod member between the bracket parts so as to cross the center member, and by joining both members at the intersection of the rod member and the center member.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view showing an embodiment of the front body structure of an automobile according to the present invention, and FIG. 2 is a perspective view showing essential parts of the embodiment.

In the figure, B indicates the body of a front-engine, front-drive type automobile.The body B of this automobile has an engine room formed in the front part of the car body. (omitted) is mounted horizontally, and this engine drives the front wheels via a transmission differential.

1 and 2 indicate front side members having a closed cross-section structure, and these front side members 1 and 2
extends along the left and right side walls of the engine compartment in the front-rear direction of the vehicle.

Reference numerals 3 and 4 indicate bracket portions provided on the pair of front side members 1 and 2, and a suspension lower arm (not shown) is attached to the bracket portions 3 and 4.

Reference numeral 5 denotes a center member which is disposed at approximately the center of the engine compartment in the vehicle width direction and extends in the vehicle front-rear direction, bypassing the oil pan of the engine.

The center member 5 has a front end 5a bolted to the front cross member 6, and a rear end 5a.
b is bolted to the dash panel 7 either directly or via a bracket, and is permanently fixed.

A vibration-proof rubber is disposed between the upper surface of the center member 5 and the engine to suppress rolling of the engine when starting or idling the engine.

A straight rod member 8 crosses this center member 5 and is suspended horizontally between the bracket portions 3 and 4 to reinforce the front side members 1 and 2.

The rod member 8 is fixed to the center member 5 at the intersection with the center member 5, further enhancing the reinforcing effect.

In the first embodiment shown in FIGS. 1 and 2, a rod with a round cross section is used as the bar member 8. It is fixed to the center member 5 by welding or the like.

Both ends of this rod are formed flat, a bolt hole 8a is opened in the center thereof, and the rod is fixed to the bracket parts 3, 4 by bolts 9.

In a second embodiment, although not shown in the drawings, the rods are passed through the lower surface of the center member 5 and intersected, and the intersecting portions of the rods are fixed to the lower surface of the center member 5 by welding or the like.

Both ends of this rod are constructed in the same way as in the first embodiment.

Note that the reinforcing linear rod member 8 may have a rectangular cross section or may be a hollow pipe material.

Also, at the intersection, the center member 5
If a vibration isolating material is interposed between the front side members 1 and the rod member 8, vibration transmission to the front side members 1 and 2 will be suppressed.

According to this embodiment, there is an advantage that the reinforcing straight bar member 8 can be horizontally suspended without reducing the minimum ground clearance of the FF type vehicle.

Since the present invention is configured as described above, it is possible to significantly improve the torsional rigidity of the body of a front-wheel drive vehicle, thereby significantly reducing muffled noise in the vehicle interior and increasing the quietness of the vehicle interior. It has the effect of being able to

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of the front body structure of an automobile according to the present invention, and FIG. 2 is a perspective view showing essential parts of the embodiment. B... Vehicle body, 1, 2... Front side member, 3, 4... Bracket portion, 5... Center member, 8... Straight rod member for reinforcement.

Claims (1)

[Scope of utility model registration request] The vehicle is a front engine/front drive vehicle in which the engine is mounted horizontally in an engine room formed at the front of the vehicle body, and the front wheels are driven. A pair of left and right front side members with a closed cross-section structure extend along the right side wall in the longitudinal direction of the vehicle, and a suspension lower arm is attached to the pair of front side members. A center member is provided at approximately the center of the engine room in the vehicle width direction, and extends in the longitudinal direction of the vehicle, bypassing the oil pan of the engine, and the bracket is arranged to intersect with the center member. 1. A front body structure for an automobile, characterized in that a reinforcing linear rod member is horizontally suspended between the two parts, and the rod member and the center member are joined at the intersection thereof.