JPH04310429A - Power plant supporting structure for automobile - Google Patents

Abstract

PURPOSE:To mount a power plant in the optimum position for suppressing the vibration. CONSTITUTION:In the power plant structure for automobile, a reinforcement 7 is firmly fixed to the inner surface of an apron side member 2 to form a closed cross section 8, a bolt 9 is laid almost horizontally to be kept between the reinforcement 7 forming the closed cross section 8 and the apron side member 2, the top of the bolt 9 is protruded into an engine room 10 from the apron side member 2, and a mount member 11 is fitted to the protruded part to support the power plant 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power plant support structure for an automobile.

0002

2. Description of the Related Art In front-wheel drive automobiles, the end of a power plant (a unit that integrates an engine and a transmission) is sometimes supported by an apron side member. 5 and 6 show an example of such a support structure. In the figure, a denotes an apron side member, and a half-hat-shaped bracket b is fixed to the rear end of the apron side member. Furthermore, the bracket b and the apron side member a
The mount member d is attached by passing the bolt c to the mount member d. The bracket e of the member d projects downward from the opening of the bracket b to support the power plant f.

0003

[Problems to be Solved by the Invention] The power plant f must be mounted at a position where vibration transmission to the vehicle body is minimized. However, in the above-described structure, the bracket f becomes an obstacle and the power plant f cannot be mounted in such a position in some cases. The present invention attempts to solve such problems, and its purpose is to provide a power plant support structure for an automobile that can always ensure an optimal mounting position.

[Means for Solving the Problems] In order to solve the above problems, the present invention fixes a reinforcement to the inner surface of a pron side member to form a closed cross section, and connects the reinforcement and apron forming the closed cross section. The bolt is held almost horizontally across the side member, the tip of the bolt is projected from the apron side member into the engine room, and a mount member is attached to the projected portion to support the power plant. Features.

0004

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show the structure of the present invention. In the figure, 1 is a fender apron panel, 2 is an apron side member, 3 is a power plant, 4 is a dash panel, 5 is a front bumper, and 6 is a front hood. A reinforcement 7 is fixed to the inner surface of the apron side member 2 over almost the entire length except for the front end. The front half of the reinforcement 7 has a substantially U-shaped cross section as shown in FIG.
It is joined to b by spot welding. On the other hand, in the rear half of the reinforcement 7, the lower half of the side wall 7b is welded to the side wall 2b of the apron side member 2, as shown in FIG. The flange-like part 7a at the upper end is attached to the flange-like part 2a of the fender apron panel 1 and the apron side member 2.
It is inserted in between and welded together. That is, a closed cross section 8 is formed between the apron side member 2 and the reinforcement 7 over the entire length. Furthermore, at the rear end of the apron side member 2 and reinforcement 7,
Burring holes 2c and 7c are provided respectively, and bolts 9 are inserted through these burring holes 2c and 7c so that their tips protrude into the engine room 10. The bolts 9 are welded to the peripheral edges of the burring holes 2c and 7c. Then, attach the mount member 11 to the bolt 9 using a nut 12, and fix the bracket 11a of the member 11 to another bracket 14 with the bolt 13,
Furthermore, the power plant 3 is mounted by fixing the bracket 14 to the power plant 3 with bolts 15. Note that the mount member 11 has a vibration-proof rubber 11d between the inner sleeve 11b and the outer sleeve 11c.
It has a structure in which

[0005]

According to the present invention, the half-hat-shaped bracket conventionally fixed to the apron side member is no longer necessary, so the power plant can be mounted at an optimal position for vibration suppression.

Furthermore, since the bolt for attaching the mount member is passed through the reinforcement and the apron side member which form a closed cross section, there is almost no inferiority in strength compared to the conventional one.

[Brief explanation of drawings]

FIG. 1 is a plan view showing a structure according to the present invention.

FIG. 2 is a side view of the same structure with the fender apron panel removed.

FIG. 3 is a sectional view taken along line AA shown in FIG. 1;

FIG. 4 is a sectional view taken along line BB shown in FIG. 1;

FIG. 5 is a side view showing a conventional example.

FIG. 6 is a sectional view taken along line CC shown in FIG. 5;

[Explanation of symbols]

1 Fender apron panel 2 Apron side member 2a Flange shaped part 2b Side wall 2c Burring hole 3 Power plant 7 Reinforcement 7a Flange shaped part 7b Side wall 7c Burring hole 8 Closed section 9 bolts 10 Engine room 11 Mounting member 11a Bracket 11b Inner sleeve 11c outer sleeve 11d Anti-vibration rubber 14 Bracket

Claims (1)

[Claims] Claim 1: A reinforcement is fixed to the inner surface of an apron side member to form a closed cross section, and a bolt is held approximately horizontally across the reinforcement and the apron side member forming the closed cross section. A power plant support structure for an automobile, characterized in that the tip of the bolt projects from the apron side member into the engine room, and a mount member is attached to the projecting portion to support the power plant.