JPS6329606Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a support structure for a power unit mainly used in a four-wheel drive type automobile.

Conventionally, to support an automobile power unit, as shown in Japanese Utility Model Application Laid-open No. 54-89730, a support frame having an approximately mouth shape in plan view is integrally formed, and the support frame is provided with the above-mentioned support frame. The power unit is elastically supported via the mount rubber.

By the way, a four-wheel drive type automobile power unit is constructed by integrally combining an engine, transmission, differential, transfer, etc., but when supporting such a power unit on the support frame, The following problems arose.

That is, the support frame is flat and has low bending and torsional rigidity, whereas a four-wheel drive type power unit is heavy, and it is difficult to support such a heavy power unit on the support frame. There is a problem in terms of strength.

In addition, the power unit may require partial removal of the transfer for maintenance and inspection, but in order to remove the transfer, it is necessary to remove part of the frame, as the frame is an integral structure. However, it is not possible to create a space for removing the transfer, and therefore, in order to remove the transfer, it is necessary to remove the entire power unit along with the support frame, which poses the problem of extremely poor workability.

The present invention was devised in view of the above-mentioned problems.The present invention is designed to improve the bending and torsional rigidity of the frame by forming a structure on the rear side of the vehicle body of the support frame. When a part of the power unit is made removable and the transfer shaft is partially removed, an opening for removing the transfer link is formed by removing a part of the frame, without having to remove the entire power unit together with the support frame. The transfer can be removed from the opening extremely easily.

More specifically, the rear side of the vehicle body is open, a main frame is formed that is approximately U-shaped in plan view, and an upper cross frame and a lower cross frame are vertically spaced between the rear open ends of the main frame. At least the lower cross frame of these cross frames is provided, and a center frame extending in the longitudinal direction of the vehicle body is provided, the front end of the center frame is removably connected to the main frame, and the rear end is coupled to the lower cross frame to form a support frame, a power unit is elastically supported on the support frame, and a transfer of the power unit is disposed between the upper cross frame and the lower cross frame. It is characterized by an insertion arrangement.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The support structure for an automobile power unit according to the present invention will be explained below with reference to the drawings.

The drawing shows a four-wheel drive type power unit P as an automobile power unit, and this power unit P integrally combines an engine E, a transmission T/M, and a differential D. A transfer T/F extending toward the rear of the vehicle body is connected to the rear side of the Arencial D by a plurality of bolts B, and a propeller shaft PS is connected to the rear of the transfer T/F.

The support frame 1 that supports the power unit P as described above is constructed as follows.

That is, the rear side of the vehicle body is open, and the main frame 2 is formed into a substantially U-shape in plan view, and the upper cross frame 3 and the lower cross frame 4 are spaced vertically at a predetermined interval between the rear open ends of the main frame 2. The longitudinal ends of these cross frames 3 and 4 are freely connected to the rear end of the main frame 2 via bolts 5 and 5, respectively, and a center frame extends in the longitudinal direction of the vehicle body. 6, the front end of the center frame 6 is detachably connected to the front lower part of the main frame 2 via a bolt 7, and the rear end is connected to the lower cross frame 4 by welding means, Thus, the main frame 2
The support frame 1 is constituted by the cross frames 3 and 4 and the center frame 6.

The power unit P is elastically supported by the support frame 1 via a plurality of rubber mounts 8, and the transfer T/F of the power unit P is connected to the upper cross frame 3 of the support frame 1 and the lower cross frame. It is inserted between the frame 4 and the frame 4.

In this way, the front end of the center frame 6 is separated from the main frame 2 by releasing the bolts 7, and the lower cross frame 4 is separated from the main frame 2 by releasing the bolts 5. By removing the lower cross frame 4 and the center frame 6, the installation space for the transfer T/F is opened downward at the rear of the main frame 2, and the transfer T/F can be taken out from the opening.

In the illustrated embodiment, a top and a lower cross frame 3 are provided between the rear open end of the main frame 2.
However, the upper cross frame 3 is connected to the main frame 2 by welding means, and only the lower cross frame 4 can be freely attached to and detached from the main frame 2 using bolts 5. They may be combined.

In the illustrated embodiment, a bracket 9 is attached to the upper cross frame 3, and the control rod C of the transmission T/M is supported by the bracket 9. This provides better assembly workability compared to conventional support means that is supported on the vehicle body side.

The support structure of the power unit P according to the present invention is constructed as described above.
When partially removing the transfer T/F during maintenance and inspection of the
and the bolts 5 connecting the rear end of the main frame 2 and the lower cross frame 4 to remove the center frame 6 and the lower cross frame 4 from the main frame 2.
In this way, the mounting space for the transfer T/F is opened downward at the rear of the main frame 2, and the transfer T/F is taken out downward from this opening.

As explained above, in the support structure of the power unit according to the present invention, the upper cross frame and the lower cross frame are connected vertically at a predetermined interval between the rear open ends of the main frame in a substantially U-shape. Since the support frame has a three-dimensional structure using the cross frames, the bending and torsional rigidity of the support frame can be significantly increased, making it ideal as a support frame for heavy power units such as 4-wheel drive types. .

Moreover, the lower cross frame is detachably connected to the main frame, and the front end of the center frame provided between the main frame and the lower cross frame is detachably connected to the main frame. When the transfer shaft is partially removed for maintenance and inspection, the center frame and lower cross frame are removed from the main frame to open the installation space for the transfer shaft downward at the rear of the main frame, The transfer can be easily removed from this opening, resulting in a marked improvement in workability during maintenance and inspection.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway side view showing a support structure for a power unit according to the present invention, FIG. 2 is a plan view of the support frame, and FIG. 3 is a rear view thereof. 1...Support frame, 2...Main frame, 3...
Atsupa cross frame, 4...lower cross frame, 6...center frame, P...power unit, T/F...transfer.

Claims (1)

[Scope of utility model registration request] A main frame with an open rear side of the vehicle body and approximately U-shaped in plan view is formed, and an upper cross frame and a lower cross frame are arranged vertically at intervals between the rear open ends of the main frame. At least the lower cross frame of these cross frames is removably connected, and a center frame extending in the longitudinal direction of the vehicle body is provided, the front end of the center frame is removably connected to the main frame, and the rear end is connected to the lower cross frame. A power unit is elastically supported by the support frame, and a transfer of the power unit is inserted between the upper cross frame and the lower cross frame. Characteristic support structure for automotive power units.