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Electric power unit for vehicle

An electric power and vehicle technology, which is applied to vehicle components, electric scooters, vehicle gearboxes, etc., can solve the problems of increased weight of electric power units, many assembly man-hours, and reduced rigidity of the transmission shell, and achieve the effect of rigidity strengthening

Inactive Publication Date: 2013-09-11
MUSA PRECISION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such an electric power unit for a vehicle, the number of parts and the number of assembly man-hours are large, and it is difficult to reduce the manufacturing cost. Moreover, due to the division between the shaft housing part and the gear housing part, and due to the three-part division of the gear housing, This leads to a reduction in the rigidity of the transmission housing, and to compensate for this, the wall thickness of the various parts of the transmission housing is increased, resulting in an increase in the weight of the electric power unit

Method used

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  • Electric power unit for vehicle
  • Electric power unit for vehicle

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Embodiment Construction

[0083] Embodiments of the present invention will be described below based on the drawings.

[0084] First, from Figure 1 to Figure 9 The description begins with the first embodiment of the invention shown. exist Figure 1 ~ Figure 4 Among them, a scooter-type motorcycle V as a vehicle includes: a vehicle frame 1; a front fork 2 that is connected to a steering standpipe 1a at the front end of the vehicle frame 1 so as to be able to steer in a direction and supports a front wheel 3; The power unit P is mounted on the rear lower part of the vehicle frame 1 in a manner capable of swinging up and down via the pivot shaft 57 and supports the rear wheels 4, and the electric power unit P drives the rear wheels 4. Between the electric power unit P and the vehicle A buffer unit 5 for buffering the vertical swing of the electric power unit P is interposed between the frames 1 .

[0085] Such as Figure 5As shown, the electric power unit P includes: an electric motor 10 arranged so t...

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Abstract

The invention provides an electric power unit for a vehicle, which requires small numbers of parts and assembly processes and which is also capable of reducing the weight and securing the stiffness of a transmission case. A second gear case portion (22) housing a secondary reduction gear train (14) is provided integrally continuous to a rear end of a shaft case portion (21) housing a propeller shaft (11). A first opening portion (23) for inserting the propeller shaft (11) and a drive gear (17) of the secondary reduction gear train (14) and for attaching a first bearing (33) supporting a rear portion of the propeller shaft (11) is provided in a front end of the shaft case portion (21). In addition, a second opening portion (24) for inserting a driven gear (18) of the secondary reduction gear train (14) and a rear axle holder (48) holding a bearing (47) supporting a rear axle (12) is provided in one side portion of the second gear case portion (22).

Description

technical field [0001] The present invention relates to an improvement of an electric power unit for a vehicle comprising: an electric motor; a transmission shaft arranged parallel to a rotor shaft of the electric motor; and a rear axle arranged perpendicular to the transmission shaft , and is used to drive the rear wheels of the vehicle; a primary reduction gear train, which reduces the output of the rotor shaft and transmits it to the front of the propeller shaft; a secondary reduction gear train, which reduces the output of the propeller shaft and from the rear of the drive shaft to the rear axle; and a drive housing that supports the electric motor and accommodates the drive shaft, primary reduction gear train, and secondary reduction gear train, the drive housing in It is mounted on the frame of the vehicle so as to be able to swing up and down. Background technique [0002] As disclosed in Patent Document 1 and Patent Document 2 below, related electric power units for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62K11/00B62M11/04
CPCB62M17/00B62K11/10B62K2202/00B62K2204/00
Inventor 冈本晃尚冲津雄一
Owner MUSA PRECISION IND CO LTD
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