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US 2018/0001923 A1Published application
Drive device and electric power steering apparatus
AssigneeDenso Corporation
InventorMasashi YAMASAKI
Life of this patent
Estimating the term…
Abstract
A drive device of an electric power steering apparatus includes a motor housing fixed to a gear housing, a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor. The motor housing includes an engaging portion. The engaging portion has a thread, which is coaxial with a rotational axis of the shaft and is threadably engaged with the gear housing.
Claims15
A power steering drive device comprising:
- a motor housing that is to be fixed to an installation subject;
- a motor unit that includes a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor;
- and
- a control unit that is installed to the motor housing and is disposed perpendicular to a rotational axis of the shaft, wherein:
- the control unit controls energization of the motor unit;
- the motor housing includes an engaging portion that is shaped into a ring form and projects in a direction parallel to the rotational axis of the shaft toward the installation subject;
- and
- when the motor housing is fixed to the installation subject, the engaging portion of the motor housing is engaged with an engaging portion of the installation subject, which is shaped into a ring form and projects in the direction parallel to the rotational axis of the shaft toward the motor housing, in a state where the engaging portion of the motor housing is coaxial with the engaging portion of the installation subject and is radially opposed to the engaging portion of the installation subject in a radial direction of the shaft.
5 more elements
An electric power steering gear system to be assembled to a drive device that includes:
- a motor housing that includes an engaging portion, which is shaped into a ring form;
- a motor unit that includes a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor;
- and
- a control unit that is disposed perpendicular to a rotational axis of the shaft, wherein the control unit controls energization of the motor unit, the electric power steering gear system comprising:
- a gear that is connected to the shaft;
- and
- a gear housing that is to be fixed to the motor housing, wherein:
- the gear housing includes an engaging portion that is shaped into a ring form and projects in a direction parallel to the rotational axis of the shaft toward the motor housing at a location around an opening of the gear housing, through which the shaft is inserted into the gear housing;
- and
- when the gear housing is fixed to the motor housing, the engaging portion of the gear housing is engaged with the engaging portion of the motor housing, which projects in the direction parallel to the rotational axis of the shaft toward the gear housing, in a state where the engaging portion of the gear housing is coaxial with the engaging portion of the motor housing and is radially opposed to the engaging portion of the motor housing in a radial direction of the shaft.
7 more elements
An electric power steering apparatus comprising:
- a drive device that includes:
- a motor housing that includes an engaging portion, which is shaped into a ring form;
- a motor unit that includes a stator, which is received in an inside of the motor housing, a rotor, which is rotatably placed on an inner side of the stator, and a shaft, which is rotated integrally with the rotor;
- and
- a control unit that is disposed perpendicular to a rotational axis of the shaft, wherein the control unit controls energization of the motor unit;
- and
- a gear system that includes:
- a gear that is connected to the shaft;
- and
- a gear housing that is fixed to the motor housing, wherein:
- the gear housing includes an engaging portion that is shaped into a ring form and projects in a direction parallel to the rotational axis of the shaft toward the motor housing at a location around an opening of the gear housing, through which the shaft is inserted into the gear housing;
- the engaging portion of the gear housing is engaged with the engaging portion of the motor housing, which projects in the direction parallel to the rotational axis of the shaft toward the gear housing, in a state where the engaging portion of the gear housing is coaxial with the engaging portion of the motor housing and is radially opposed to the engaging portion of the motor housing in a radial direction of the shaft.
9 more elements
Dependencies are inferred from the claim text.