摘要:
An object of the present invention is to provide an in-wheel motor driving device which includes a highly adaptable suspension mounting portion, is light weighted, and has reduced drag friction at the time of steering operation. An in-wheel motor driving device comprises: a motor section A which rotates a motor-side rotation member; a speed reducer section B which reduces and transmits rotation of the motor-side rotation member to a wheel-side rotation member; and a wheel hub connected and fixed to the wheel-side rotation member. The above three elements are disposed in series from an inboard side to an outboard side of a vehicle, and suspension mounting brackets are fixed onto an outer surface of the speed reducer section's housing. Arms of a suspension are attached via the suspension mounting brackets.
摘要:
A drive device for an electric vehicle includes: a speed reduction unit including an input shaft driven by output of an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit. The drive device is provided with a power supply terminal box made up of: an accommodation recessed portion provided in a rear end surface of the housing; a power supply terminal provided inside the accommodation recessed portion; a communication hole in communication with the accommodation recessed portion and an interior of the housing; and a cover member for the accommodation recessed portion.
摘要:
An object of the present invention is to prevent lubricant oil of a speed reduction unit from moving to an electric motor side and besides to prevent an eccentric load from acting on bearings supporting an input shaft. In a drive device for an electric vehicle including: a speed reduction unit including an input shaft driven by output of an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, the configuration is made such that a partition for partitioning an accommodation section into respective accommodation spaces of the electric motor and the speed reduction unit is provided in the housing, and an oil seal member is placed between a peripheral edge portion of a center hole of the partition and a rotor support member the electric motor.
摘要:
An object of the present invention is to prevent lubricant oil of a speed reduction unit from moving to an electric motor side and besides to prevent an eccentric load from acting on bearings supporting an input shaft. In a drive device for an electric vehicle including: a speed reduction unit including an input shaft driven by output of an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, the configuration is made such that a partition for partitioning an accommodation section into respective accommodation spaces of the electric motor and the speed reduction unit is provided in the housing, and an oil seal member is placed between a peripheral edge portion of a center hole of the partition and a rotor support member the electric motor.
摘要:
An object of the present invention is to achieve reduction in cost and size of power supply means for an electric motor by obviating the need of a power supply connector therefor as an independent part. In a drive device for an electric vehicle including: a speed reduction unit including an input shaft driven by output of an electric motor; a hub unit rotationally driven by an output member of the speed reduction unit; and a housing accommodating the electric motor and the speed reduction unit, there is provided with a power supply terminal box made up of: an accommodation recessed portion provided in a rear end surface of the housing; a power supply terminal provided inside the accommodation recessed portion; a communication hole in communication with the accommodation recessed portion and an interior of the housing; and a cover member of the accommodation recessed portion.
摘要:
A plurality of circumferential fins 22g are formed on an outer peripheral surface of a motor casing 22a, and a plurality of fins 22f are formed on an outer surface of a motor rear cover 22d. Lubricant circulates in a motor-casing oil passage 55 provided in the motor casing 22a, a motor-rear-cover oil passage 56 provided in the motor rear cover 22d, and a speed reduction portion B. This lubricant is cooled when flowing in the motor-casing oil passage 55 and the motor-rear-cover oil passage 56. Thus, an in-wheel motor drive device 21 is efficiently cooled.
摘要:
A drive device for an electric vehicle in which, by improving a supporting structure of an input shaft of a speed reduction unit, the bearing stiffness of a hub bearing is improved, while the rotational accuracy and the durability of an input shaft of a speed reduction unit are improved and noise is suppressed. The drive device includes: a speed reduction unit including an input shaft driven by an electric motor; a hub unit rotationally driven by the speed reduction unit; and a housing. The input shaft of the speed reduction unit is supported by bearings provided at two locations in the axial direction. The bearings are both supported by the output member, and the PCD of the inboard-side hub bearing of the hub bearings disposed at the two locations in the axial direction of the hub unit is larger than the PCD of the outboard-side hub bearing.
摘要:
An in wheel motor driving device which has a deceased axial dimension and includes aluminum alloy housings having a minimum wall thickness for reduced weight while retaining good assemblability. An in-wheel motor driving device includes: a motor section which has an output shaft; a wheel hub bearing section C; and a speed reducer section which connects the output shaft of the motor section and the wheel hub bearing section coaxially with each other. A housing outer circumferential portion of the motor section and a housing outer circumferential portion of the speed reducer section are integral with each other, being provided by one, outer circumferential member. An outboard-side end member is fixed to an outboard-side end of the outer circumferential member by means of bolts, and the wheel hub bearing section has its fixing ring fixed to the outboard-side end member.
摘要:
An in-wheel motor drive device (21) includes a motor part A, a reducer part B, a wheel hub C, and a reducer part lubricating mechanism to supply a lubricant oil to the reducer part. The reducer part lubricating mechanism includes a lubricant oil path (25c), a lubricant oil supply port (25d), a lubricant oil discharge port (22b), a circulation oil path (45) passing through a casing (22) to connect the lubricant oil discharge port (22b) to the lubricant oil path (25c), and to return the lubricant oil discharged from the lubricant oil discharge port (22b) to the lubricant oil path (25c), a cooling water path (22e) provided in the casing (22) so as to be in contact with the circulation oil path (45) to cool down the lubricant oil passing through the circulation oil path (45), and a partition member (49) arranged in a contact position between the circulation oil path (45) and the cooling water path (22e), to separate them.
摘要:
The spindle drive unit of a combined machine tool drives the spindle. The tip end of the spindle is provided with a boring tool and a tool head having a rough grinding stone and a finishing grinding stone. The spindle drive unit has a first support unit and a second support unit capable of receiving the spindle therethrough and supporting it rotatably, a linear motor and a column slide mechanism for moving the first and second support unit in the axis direction of the spindle, and a spindle motor for rotating the spindle.