JPS604006B2 - Vehicle drive system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an engine, and a power transmission unit fixed to the rear surface of the engine, that is, the end surface on the flywheel side, for transmitting the rotation of the output shaft of the engine to the wheel drive shaft. , and the power transmission unit is constituted by assembling a clutch or a torque converter, a transmission, and a differential device so as to be able to transmit power, in particular,
A power transmission unit equipped with a vertical transmission is fixed to the end surface of a horizontally mounted engine,
and the structure of the housing is improved by configuring the housing of the power transmission unit to be divided into two housing parts on a plane that includes the input/output shaft of the vertical transmission and is substantially parallel to the rear end surface of the engine. It is designed to be simple and easy to assemble, which will be explained below with reference to the accompanying drawings.

1 to 4 show a drive device for vehicle steel according to an embodiment of the present invention.

This drive device includes an engine 1, a clutch 2, a transmission 3, and a differential device 4. The clutch 2, transmission 3, and differential device 4 are assembled to form a power transmission unit 5 for transmitting the rotation of the output shaft 8 of the engine 1 to the front wheel drive shafts 9, 9'. A housing 6 of the unit 5 is fixed to the rear end surface of the engine 1 by bolts 7. The engine 1 is a horizontally mounted engine mounted on a military commander so that its output shaft 8 extends in the lateral direction of the military commander, while the transmission 3
is a vertical transmission arranged on the vehicle neck with its input shaft 11 and output shaft 12 extending in the longitudinal direction of the vehicle steel (that is, the longitudinal direction of the vehicle steel). Further, the housing 6 of the unit 5 is connected to the transmission 3
The two parts include an input shaft 11 and an output shaft 12 of the engine 1, are divided on a plane substantially parallel to the end surface of the engine 1, and are assembled together by bolting 13 (FIG. 1) on the plane. It is made up of two housing parts 6a and 6b. As is well known, transversely mounted engines are usually employed in front engine-front drive (F-F) type or rear engine rear drive (R-R) type car steel, and the illustrated embodiment is The drive unit is for F-F type car steel.

Therefore, this drive device drives front wheels 10, 10' via front wheel drive shafts 9, 9'. It is clear, however, that the drive device can be designed for an R-R driver. 1 and 3, reference numerals 14 and 14' indicate universal joints, and the front of the axle is indicated by arrow A in FIG. As clearly shown in FIGS. 2 and 3, the clutch 2
is arranged so that its output shaft 15 extends in substantially the same direction as the output shaft 8 of the engine 2, and the output shaft 15 of the clutch 2 and the input shaft 11 of the vertical transmission are connected to a pair of bevel gears, i.e., a clutch. They are operatively connected via a driving bevel gear 16 which is integrally iron-bonded to one end of the output shaft 15 and a driven bevel gear 17 which is bolted onto the transmission input shaft 11 .

Further, a drive pinion 18 for driving the differential device 4 is provided at one end of the output shaft 12 of the transmission, and this drive pinion is connected to the ring gear 19 of the differential device 4.
is engaged in. In the illustrated embodiment, the drive pinion 18 and ring gear 19 are constructed of a no-poid gear, but they may also be constructed of a bevel gear. In addition, in FIG. 2, 20 and 21 indicate an input gear and an output gear of the transmission, respectively. As described above, the drive system of the illustrated embodiment includes a horizontal engine and a vertical transmission.

However, according to this configuration, the lateral center W (Fig. 4) of the drive device using a horizontal engine is made small, and the front wheels 10, 1
It is possible to increase the gaps C and C' between the drive unit 0' and both sides of the drive device, thereby providing the advantage of increasing the turning angle Q and reducing the minimum turning radius of the tactician by 4. In other words, in conventional military vehicles with a horizontally mounted engine, the transmission is also mounted horizontally, and a drive unit with a horizontally mounted engine and transmission has a large lateral diameter, which causes the vehicle steel to become larger. This results in a large minimum turning radius. The drive device of the illustrated embodiment has the above-mentioned configuration, and has an engine output of 8
The rotation transmitted from the clutch output shaft 15 to the clutch output shaft 15 is transmitted to the input gear 11 of the transmission 3 via the driving bevel gear 16 and the driven bevel gear 17.

Further, the rotation of the input shaft 11 is transmitted via the input gear 20 and the output gear 21 to the transmission output shaft 12 and the drive pinion 18 provided integrally therewith,
Further, the front wheel drive shaft 1 is connected via the differential device 4 and the front wheel drive shafts 9 and 9'.
0,10'. As is clear from the above, the drive device for car sea bream of the present invention connects the housing 6 of the power transmission unit 5 fixed to the rear end surface of the horizontal engine, and the input shaft 11 and output shaft 12 of the vertical transmission 3. Since the housing 6 is divided into two parts 6a and 6b on a plane substantially parallel to the rear end surface of the engine, the structure of the housing 6 is simple, and its processing and assembly are extremely easy. It has the advantage of becoming

As is clear, inside the housing of the power transmission unit,
A large number of parts, such as the input/output shaft and input/output gear of the transmission, and the differential gear of the differential gear, are assembled and housed. Therefore, it is generally difficult to configure the housing to be divided into two parts on a single plane, and to also configure the above-mentioned components to be easily accommodated within the housing. However, according to the present invention, the housing 6 is a plane that includes the input shaft 11 and the output shaft 12 of the vertical transmission and is substantially parallel to the rear end surface of the horizontal engine.
This is possible by making it a dividing plane. Further, according to the configuration of the present invention, the housing can be assembled by a simple operation of joining one housing part 6b to the rear end surface of the engine and joining the other housing part 6a to the ten thousand housing parts 6b. In addition, the only joint surfaces of the housing that require machining are the joint surfaces between each housing part 6a and 6b and the joint surface of one housing part 6b to the end surface of the engine. This has the advantage of making it easier to process. Further, according to the configuration of the present invention described above, there is an advantage that the input/output ball, input/output gear, etc. of the transmission can be easily removed by removing only the housing portion on the side remote from the engine.

That is, to explain this using the illustrated embodiment, by removing the housing part 6a from the state shown in FIG. 1 and changing it to the state shown in FIG. Since it can be taken out to the front, maintenance and repair work on the transmission, such as gear replacement, can be easily performed. Furthermore, in the present invention, since a power transmission unit having a vertical transmission is fixed to the rear end surface of a horizontally installed engine, it is different from the conventional power transmission unit having a rigid transmission fixed to the rear end surface of a horizontally installed engine. Compared to the configuration, the protrusion length of the power transmission unit housing from the rear end surface of the engine (that is, the length from the rear end surface of the engine to the left end surface of the housing portion 6a in FIG. 1) is reduced by 4. Therefore, since the entire housing 6 is supported by the engine at a position close to the engine, there is an advantage that the rigidity of the housing is increased.

In the illustrated embodiment, a clutch 2 and a manual transmission 3 are used, but the drive device of the present invention may be used with a torque converter and a vertically installed auxiliary transmission (
It is also possible to configure it with an automatic transmission with a mechanical transmission.

[Brief Description of the Drawings] Fig. 1 is a schematic perspective view showing a wheel drive device according to an embodiment of the present invention, and Fig. 2 shows details of the transmission in the drive device of Fig. 1, and the relationship between the transmission and other components. An explanatory diagram showing the relationship between the two housing parts, excluding one of the two housing parts that are joined to each other on a plane that includes the input/output shaft of the transmission. FIG. 4 is a schematic top view showing the relationship between the drive device and the front wheels. DESCRIPTION OF SYMBOLS 1... Engine, 2... Clutch, 3... Transmission, 4... Differential device, 5... Power transmission unit, 6...
Housing, 8... Engine output shaft, 11. ．． - Transmission input shaft, 12... Transmission output shaft, 15... Clutch output shaft, 16... Drive bevel gear, 17... Driven bevel gear, 18... Drive pinion, 19... Ring gear. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1 Equipped with a horizontal engine and a power transmission unit fixed to the rear end surface of the engine to transmit the rotation of the output shaft of the engine to the wheel drive shaft, and the power transmission unit is connected to a clutch or a torque converter, a vertical The transmission and the differential are assembled to enable power transmission, and the housing of the power transmission unit includes the input/output shaft of the transmission and is parallel to the rear end surface of the engine. 1. A vehicle drive device comprising two housing parts that can be joined to each other on a flat surface.