JPH0412810Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement in the structure of an engine mount bracket.

(Prior Art) As shown in Fig. 3, a transverse type power plant (integrated engine, clutch, transmission, etc.) 1 in a front-wheel drive vehicle is generally mounted on a pair of left and right front side frames 2, 2. 2 on one side by a pair of horizontally suspended front and rear cross members 3, 3.
A three-point support structure is adopted in which a point is supported via first and second brackets 4 and 5, and one point on the other side is supported by one front side frame 2 via a third bracket 6. There is.

By the way, since the power plant 1 is supported by the front side frame 2 on one side, vibrations due to the second-order component of the engine speed are transmitted to the front side frame 2 via the third bracket 6, and in particular, the engine speed is When the number is between 3,500 and 4,000 rpm, it matches the resonance frequency of the vehicle interior cavity and generates a harsh noise called high-speed muffled noise.

In order to suppress this muffled sound, the front side frame 2 at the supporting position of the third bracket 6 must be
However, since the deformation of the front side frame 2 at the time of a collision can be suppressed, there is a problem that the collision characteristics deteriorate.

(Purpose of the invention) The present invention was made to solve the above-mentioned conventional problems, and aims to increase the rigidity of the frame so as to suppress muffled noise, and at the same time reduce it so as to improve collision characteristics. The object of the present invention is to provide an engine mount bracket structure that can satisfy the conflicting demands.

(Structure of the invention) For this reason, the present invention includes a long frame mounting part that extends in the longitudinal direction of the frame and is attached to the engine mount bracket, and a frame mounting part that is formed in the frame mounting part to control buckling of the frame. It is constructed by providing a notch for the purpose of

(Effects of the invention) According to the invention, since the frame attachment portion of the engine mount bracket is extended, the rigidity of the frame is improved and muffled noise is suppressed.

In addition, since a notch is formed in the frame attachment part, buckling of the frame in the event of a collision is controlled.
Collision characteristics will also improve.

(Example) As shown in FIG. 1, the front side frame 10 is formed into a closed cross section by a wheel apron 13 provided with a suspension tower section 11 and a tire house section 12, and the front side frame 10 has a closed cross section. A bracket 14 having a hole 14a through which the drive shaft is inserted is fixed to.

A third bracket (engine mount bracket) 16 is attached to the front side frame 10 to support one point on the other side of the power plant 1 via an elastic member (not shown).

The third bracket 16 has a wide bracket that extends in the longitudinal direction of the front side frame 10 to a length l longer than that of the conventional third bracket 6 and is attached to the top surface 10a and side surface 10b of the frame 10 by welding or the like. Frame attachment portions 16a and 16b are formed.

A rising portion 16 for supporting the power plant 1 via an elastic member is located approximately in the longitudinal center of the frame mounting portion 16a on the upper surface side.
c, 16c are formed, and the rising portions 16c, 16
The side flange portion 16d of c is the wheel apron 1
It is fixed to the bracket 17 of No. 3 with a bolt 18.

A notch 16e for controlling buckling (deformation) of the front side frame 10 is formed in the frame mounting portion 16b on the side surface at a position forward of the rising portions 16c, 16c.

If the configuration is as above, the third bracket 1
Since the frame attachment portions 16a and 16b of No. 6 are long and wide, the rigidity of the front side frame 10 is improved, and as a result, muffled noise is suppressed.

Also, the frame mounting portion 1 of the third bracket 16
Since a notch 16e is formed in 6b,
In the event of a collision, the front side frame 10 will buckle just before the bracket position, and the collision characteristics will also be improved.

In the above embodiment, the notch 16e was formed in the frame attachment part 16b of the third bracket 16, but as shown in FIG.
16c is opened in a V-shape and rib parts 16f, 1 are placed on both sides.
6f, and a notch 16'e may be formed between the rising portions 16c, 16c.

In this case, the side frame 10 will buckle at the bracket position.

Note that in each of the above embodiments, the third bracket 16
Although only the structure of the bracket is shown, it goes without saying that it can also be applied to the structure of the first and second brackets.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a first embodiment of an engine mount bracket structure according to the present invention, FIG. 2 is a perspective view of a second embodiment, and FIG. 3 is a plan view of a conventional engine mount bracket structure. 10...Front side frame, 16...Third bracket (engine mount bracket),
16a, 16b...Frame attachment part, 16e, 1
6'e...Notch, l...Length.

Claims (1)

[Scope of Claim for Utility Model Registration] An engine mount bracket for supporting a power plant that integrates an engine, a clutch, a transmission, etc. on a vehicle body frame via an elastic member, An engine mount comprising: an elongated frame attachment part extending in the longitudinal direction and attached to the frame; and a notch formed in the frame attachment part for controlling buckling of the frame. Bracket structure.