HYBRID VEHICLE TRAINING DEVICE

Abstract

A drive unit (4) comprises a left-hand housing (7) of a transmission housing (5). The left-hand housing (7) is equipped with a speed reducer housing (25) comprising a speed reducer mechanism (33). The speed reducer housing (25) comprises an enclosure element (26) formed with the left-hand housing (7) and surrounding the speed reducer mechanism (33), and a cover element (27) attached to the enclosure element (26). The enclosure element (26) comprises a side wall (29) extending upwards from an upper wall (7B) of the left-hand housing (7) and disposed between an electric motor (32) and the speed reducer mechanism (33). The side wall (29) is equipped with a disc-shaped motor mount (29C) with an outer diameter identical to that of the electric motor (32) and attached to the electric motor (32).The motor support (29C) has bosses (29m) and bolts (23C) for fixing the electric motor (32) to the motor support (29C).[Fig. 5].

Claims

1. Claims A drive device for a hybrid vehicle comprising: a transmission case (5) which includes a first case (6) connected to a power source and a second case (7) connected to the first case away from the power source, the first case and the second case having, disposed therein, a transmission (11, 12, 16A to 16F, 17A to 17F) to which power is supplied from the power source and a differential (15) to which power is supplied from the transmission; an electric motor (32) which is attached to an upper portion of the transmission housing; a speed reduction mechanism (33) which operates to provide power produced by the electric motor to the transmission; and a speed reducer housing (25) in which the speed reducer mechanism is arranged, characterized in that the transmission comprises an input shaft (11) with input gears and an output shaft (12) with output gears engaging the input gears, the speed reduction mechanism which delivers the power produced by the engine to one (17D) of the output gears is mounted on the output shaft, the speed reducer housing comprises a shell member (26) and a cover member (27), the shell member being integrally formed with the second housing, in an L-shape, as seen in an axial direction of the input shaft, and surrounding the speed reducer mechanism, the cover member being joined to the shell member, the shell member comprises a side wall (29) which extends upwardly from a top wall (7B) of the second housing and is located between the motor and the speed reducer mechanism, the side wall has an outer diameter identical to that of the electric motor and is provided with a disc-shaped motor mount to which the electric motor is fixed, and the engine mount comprises a plurality of fixing means (29m, 23C) arranged on its outer periphery for fixing the engine electric to the engine mount.

2. A drive device for a hybrid vehicle according to claim 1, wherein the speed reduction mechanism has a plurality of rotary shafts (35, 36) arranged on a power transmission path through which power is transmitted from the electric motor to the transmission, the side wall is provided with a plurality of cylindrical bearing retainers (29a, 29b) which hold bearings (51A, 51C) retaining the rotary shaft in a rotatable manner, and at least one of the bearing retainers is provided in a portion of the side wall which connects the motor mount and the top wall.

3. A drive device for a hybrid vehicle according to claim 1 or 2, wherein the second housing is provided with a flange (7F) attached to the first housing using a plurality of fastening means (23A), the flange having a plurality of bosses (7f) into which the fastening means are inserted and which are arranged along the flange, and wherein at least one of the bosses is connected to the side wall.

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