JPH0122729Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a power plant support structure for an automobile.

(Prior Art) Conventionally, as a power plant support structure for an automobile, a mounting bracket for supporting an engine or other power plant has generally had its upper part fixed to a thin foil apron and its lower part fixed to a front frame. It is. Utsukai Showa 54-
No. 54026 is an example.

(Problem that the invention aims to solve) However, in this configuration, since the upper part of the mount bracket is fixed to a thin foil apron, not only is the strength around the connection position insufficient, but also vibration There was a problem that this was one of the causes of noise generation.

Therefore, an object of the present invention is to obtain a power plant support structure that can secure sufficient support strength for the power plant by attaching the power plant to a highly rigid front frame via a mount bracket.

(Means for Solving the Problems) The means taken by the present invention to achieve the above-mentioned object is that the wheel apron is connected to the lower end of the wheel apron on the side wall of the engine room, and is configured by an outer panel and an inner panel in the longitudinal direction. A front frame with a closed cross-section structure extending from the front frame is formed, and the front frame is composed of a front frame upper, a front frame lower, and a connecting member extending in the vertical direction and connecting the lower surface of the front frame upper and the front lower. A mount bracket having mounting side walls facing each other is fixed above the joint between the front frame upper of the front frame and the connection member extending in the vertical direction and to the front frame upper side wall, and the power plant is fixed to the mount bracket. This pertains to a configuration in which the following is supported.

(Function) With the above configuration, the power plant is supported by the highly rigid front frame, so its supporting rigidity is improved, and vehicle body vibration and noise can be reduced.

(First Embodiment) Hereinafter, a first embodiment of the present invention will be described based on the drawings.

This example has a structure in which a mount bracket for supporting the engine and other power plants is provided at a highly rigid position on the front frame.As shown in Figure 2, the power plant is mounted at a position corresponding to the front frame. Concerning what is composed. 1 is a mount bracket, and 2 is a front frame. The front frame 2 has one end connected to the lower end of the wheel apron 8, and has a closed cross-sectional structure formed by an outer panel 21 and an inner panel 22 for the purpose of improving the strength of the vehicle body. The front frame 2 is constructed by connecting the lower surface of the front frame upper 23 and the front frame lower 24 by a connecting member 3 extending in the vertical direction. Such a structure is adopted depending on the type of suspension, as shown in, for example, Japanese Utility Model Application Publication No. 55-129173.

The mount bracket 1 that supports the power plant 4 such as an engine is fixed to the side wall of the front frame upper above the joint between the front frame upper 23 and the connection member 3 in the front frame 2. . The mounting bracket 1 has mounting side walls 1a and 1b facing each other. 1c, 1d
is a mounting piece for fixing the mount bracket 1 to the front frame 2, and these mounting pieces 1c, 1d and the front frame 2 are fixed with bolts.
One end of the mount rod 5 extending from the power plant 4 is attached to the mount bracket 1 fixed in this manner (see FIG. 3). In this mounting means, one end of the mount rod 5 is inserted between the mounting side walls 1a, 1b, and the one end of the mount and the mounting side walls 1a, 1b are pivotally connected using bolts 6 or the like. Although not shown, a vibration isolating material is interposed between the mount rod 5 and the mount bracket 1. Note that a power plant 4 such as an engine and a transmission is attached to the other end of the mount rod 5. Reference numerals 7 and 7 designate holes for receiving bolts and the like formed in the mounting side walls 1a and 1b. Further, 8 is a foil apron.

(Second Embodiment) This example has a structure in which a reinforcement 9 extending in the longitudinal direction of the vehicle body is provided between the inner panel 22 and the outer panel 21 at the position where the mount bracket 1 of the front frame 2 is provided.
As shown in the figure. The reinforcement 9 is provided approximately parallel to the plane of the front frame upper 23, and both end portions of the reinforcement 9 are connected to the inner panel 22 and the outer panel 2, respectively.
It is bonded and fixed to the inner surface of 1. In fixing the mounting piece 1c of the mount bracket 1 to the side surface of the front frame 2, if the mounting bracket 1 is tightened together with the inner end of the reinforcement 9, the mount bracket 1 will have a large supporting force. and,
In the front frame 2, the outer panel 21 and the inner panel 22 are likely to undergo cross-sectional deformation during a frontal collision or when receiving a large load from the lower frame.
By reinforcing the inside of the front frame 2 with the reinforcement 9 as in this example, it is possible to prevent such cross-sectional deformation from occurring.

Incidentally, the mount bracket 1 of the present invention is for arranging the power plant 4 in the engine room 10 so as to horizontally support it. In other words, this relates to the mount bracket at position D among the mount bracket mounting positions A, B, C, and D in FIG.

(Effects of the invention) As described above, the present invention provides a mount bracket above the joint between the front frame upper and the connection member in the front frame and on the side wall of the front frame upper, and the power plant is supported on the mount bracket. Since the power plant support structure for an automobile is made up of a number of components, vibrations transmitted from the engine to the vehicle body can be reduced by having the load input point, that is, the support portion of the power plant at the mount bracket, close to the front frame. The position of the front frame where this mount bracket is installed is front and back, left and right,
Both the top and bottom parts have extremely high rigidity. Therefore, the vertical loads of the engine and other power plants can be directly supported by the connecting members that extend in the vertical direction, while the longitudinal loads are supported by the front frame tops that extend in the longitudinal direction of the vehicle body, providing high support rigidity. As a result, vehicle body vibration and noise transmitted through the engine mount are reduced. Furthermore, in the above structure, since the mount bracket is directly attached to the front frame, there is an advantage that other parts such as a separate mounting bracket are not required. In addition, if reinforcement is used at the mounting bracket attachment part of the front frame, the area around the mount bracket will be reinforced by the reinforcement, which will increase the strength of the vehicle body in the event of a frontal collision. This has the effect of greatly increasing the supporting force of the bracket. Further, by arranging the power plant so as to horizontally support it in the engine room, there is an excellent effect that the power plant can be supported strongly and stably.

[Brief explanation of the drawing]

1 and 2 show a first embodiment of the present invention, and FIG. 1 is a plan view of an engine room of an automobile;
FIG. 2 is a perspective view of the front frame in which a mount bracket is provided at the joint between the front frame upper and the connection member extending in the vertical direction. FIG. 3 is a longitudinal sectional view of a front frame in a second embodiment of the present invention. 1...Mount bracket, 1a, 1b...Mount side wall, 2...Front frame, 21...
...Outer panel, 22...Inner panel, 2
3...Front frame upper, 24...Front frame lower, 3...Connection member, 4...
Power Plant, 5...Mountrod, 6...
Bolts, etc., 8... foil apron, 9... reinforcement, 10... engine room.

Claims (1)

[Claims for Utility Model Registration] (1) A front frame is formed that is connected to the lower end of the wheel apron on the side wall of the engine room and has a closed cross-section structure that extends in the front-rear direction and is composed of an outer panel and an inner panel. The front frame includes a front frame upper, a front frame lower, and a connecting member extending vertically to connect the lower surface of the front frame upper and the front lower, and extending vertically with the front frame upper of the front frame. A power plant support structure for an automobile, in which a mount bracket having mounting side walls facing each other is fixed to an upper side wall of a front frame above a joint with a connecting member, and a power plant is supported by the mount bracket. (2) The front frame upper is provided with a reinforcement that extends in the front and back direction between the inner panel and the outer panel at the joint position with the connection member that extends in the vertical direction. A power plant support structure for an automobile according to scope 1. (3) The mount bracket is located in the engine room so as to horizontally support the power plant.
A power plant support structure for an automobile as described in Section 1.