JP3272270B2 - Front chassis frame - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for attaching an engine mount and a steering gear box to a rear cross member of a double-girder front chassis frame of a vehicle.

[0002]

2. Description of the Related Art A conventional device for supporting an engine mount and a steering gear member by a cross member arranged in an engine room of a vehicle is disclosed in Japanese Patent Application Laid-Open No. Hei 2-30688.
As exemplified in Japanese Patent Publication No. 2 (1993), a bracket for supporting the engine mount and a bracket for supporting the steering gear member are separately formed and individually fixed on the cross member. While the number of brackets increases and the number of parts increases, the former bracket is subjected to a large load in the vertical direction, while the latter bracket is loaded in the vehicle width direction, and each bracket has sufficient load. Therefore, it is necessary to provide reinforcing means such as enlarging the flange portion of each bracket to be welded to the cross member, thereby increasing the weight and man-hour for mounting the bracket as a whole. And so on, resulting in an increase in cost, especially for vehicles.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to attach an engine mount and a steering gear box to a rear cross member of a cross beam front chassis frame of a vehicle at a relatively lightweight and low cost. It is in.

[0004]

For this reason, a front chassis frame according to the present invention provides an engine mount mounting portion having a substantially U-shaped cross section and a vehicle width direction of the engine mount mounting portion in a double-girder front chassis frame of a vehicle. A sheet metal bracket integrally formed with a steering gear box mounting portion formed on both sides is welded to a substantially central portion of a pipe cross member arranged along the vehicle width direction.

That is, a single sheet metal bracket welded to a substantially central portion of a pipe cross member integrally forms an engine mount mounting portion and a steering gear box mounting portion, and the engine mount and the steering gear box are formed. Can be attached to the cross member with a minimum number of brackets, and the bracket has a relatively simple configuration in which a steering gear box attachment portion is formed on each side of the engine mount attachment portion in the vehicle width direction, and Since the welded portion of the bracket and the cross member can be easily lengthened in the vehicle width direction and the front-rear direction of the vehicle, the bracket can be firmly attached to the cross member. By using the bracket, the engine It is possible to increase the supporting force of the cement and the steering gear box easily.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention shown in the drawings will be described below. 1 and 2, a front chassis frame 10 of a vehicle includes a square pipe front cross member 11 disposed in the vehicle width direction and left and right round pipe side members 12 disposed in the vehicle front-rear direction.
And right and left end portions of the front cross member 11 and front end portions of the left and right side members 12 are connected to each other via the connect bracket 14. In addition, the left and right ends of the rear cross member 13 and the left and right side members 1
The front chassis frame 10 is formed in a cross-girder shape by being connected to the rear portions 2 respectively, and is appropriately connected to a vehicle body (not shown) and supported by the vehicle body.

At a substantially central portion of the rear cross member 13,
Sheet metal bracket 20 integrally formed by press working
Are arranged along the rear cross member 13. As shown in FIGS. 3 to 6, the bracket 20 includes an engine mount mounting portion 21 having a substantially U-shaped cross section and opening downward. A steering gear box mounting portion 22 is formed on each side of the mount mounting portion 21 in the vehicle width direction.

Further, mounting holes 23 are provided vertically on opposite wall surfaces of the engine mount mounting portion 21, respectively, and the inside of the vertical mounting hole 23 is provided between the opposing wall surfaces of the engine mount mounting portion 21. A spacer 24 having a substantially eyeglass-shaped cross section surrounding the opening is mounted, and a flat mounting surface 25 is formed below the steering gear box mounting portion 22 and a weld nut 26 is installed above. .

Further, the rear edge 27 and the lower edge 28 of the bracket 20 extend over a wide area.
Of the bracket 2
0 is firmly fixed to the rear cross member 13.

Accordingly, the leg portion 31 of the engine mount 30 having a substantially U-shaped cross section is placed over the engine mount mounting portion 21 of the bracket 20 to mount the mounting hole 23 and the leg portion 31.
The bolts 32 are inserted through the
The engine mount 30 through the rear cross member 13
1, the rear end of the engine transmission 33 can be supported by the front chassis frame 10 by the engine mount 30 as shown in FIG. The bolts 34 are screwed into the weld nuts 26 to mount the clamps 35, thereby gripping the steering gear box 36 between the steering gear box mounting portion 22 and the clamps 35, and as shown in FIG. 36 are arranged in the vehicle width direction.

In the above device, the rear cross member 1
A single bracket 20 welded to the substantially central portion of 3
The engine mount 30 and the steering gear box 36 are supported by the engine mount mounting portion 21 and the steering gear box mounting portion 22, respectively, and the number of parts for supporting the engine mount 30 and the steering gear box 36 is minimized. It can be.

Further, the engine mount 30 and the steering gear box 36 to which loads act in different directions are combined with a single bracket 2 having a relatively simple structure.
0, the welded portion of the bracket 20 to the rear cross member 13 can be easily lengthened in the vehicle width direction and the vehicle front-rear direction like the rear end edge 27 and the lower end edge 28 of the bracket 20. At the same time, the operation of welding the bracket 20 to the rear cross member 13 is relatively simple, so that the bracket 20 can be firmly and easily attached to the rear cross member 13.

Further, since loads in different directions acting on the engine mount 30 and the steering gear box 36 are commonly supported by the welded portions,
The bracket 20 can be made relatively small and lightweight as a whole, and as a result, the supporting force of the bracket 20 on the engine mount 30 and the steering gear box 36 can be easily increased.

That is, the number of parts for supporting the engine mount 30 and the steering gear box 36 is significantly reduced as compared with the conventional apparatus, and
Therefore, the cost required for the front chassis frame 10 for supporting the engine mount 30 and the steering gear box 36 can be easily reduced, and
Further, since the weight of the bracket 20 can be reduced, the effect for a vehicle is great.

[0015]

In the front chassis frame according to the present invention, a single bracket welded to the rear cross member has an engine mount mounting portion and a steering gear box mounting portion. The number of parts for supporting the bracket is minimized, and the overall structure of the bracket is relatively simple and small, and the welding work on the rear cross member is easy, so the cost for the bracket is easily reduced. In addition, since the weight of the bracket can be reduced, the effect for a vehicle is particularly large.

[Brief description of the drawings]

FIG. 1 is a schematic top view in an embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is an enlarged top view of a main part of the embodiment.

FIG. 4 is a view taken in the direction of arrow IV in FIG. 3;

FIG. 5 is an enlarged view of FIG.

FIG. 6 is a cross-sectional view taken along the line VI-VI of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Front chassis frame 11 Front cross member 12 Side member 13 Rear cross member 14 Connect bracket 20 Bracket 21 Engine mount mounting part 22 Steering gear box mounting part 23 Mounting hole 25 Mounting surface 26 Weld nut 30 Engine mount 32 Bolt 35 Clamp 36 Steering gear box

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Harumichi Shiraishi 1410 Mohei, Kasaoka City, Okayama Prefecture Hirta Kogyo Co., Ltd. Bunwa 1410 Mohei, Kasaoka City, Okayama Prefecture Hirta Kogyo Co., Ltd. (72) Inventor Junji Ishii 1410 Mohei, Kasaoka City, Okayama Prefecture Hirta Kogyo Co., Ltd. (56) References JP-A-6-122379 (JP, A) JP-A-5-185951 (JP, A) JP-A-6-51065 (JP, U) JP-A-61-54976 (JP, U) Actually open 4-125981 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B62D 21/00 B62D 25/20

Claims (1)

(57) [Claims] 1. A crossbeam-shaped front chassis frame for a vehicle, wherein an engine mount mounting portion having a substantially U-shaped cross section and steering gear box mounting portions formed on both sides in the vehicle width direction of the engine mount mounting portion are integrally formed. A front chassis frame in which the formed sheet metal bracket is welded to a substantially central portion of a pipe cross member arranged along the vehicle width direction.