Electric rotating machine
AssigneeDenso Corporation
InventorsMakoto Taniguchi, Jirou Hayashi
Life of this patent
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Abstract
An electric rotating machine has a first end frame and a second end frame for firmly supporting a stator between them in an axial direction of the electric rotating machine. An electronic control portion is mounted to a rear side of the first end frame. Multiple through-holes are formed at a radial-outer periphery of the second end frame. Each of multiple through-bolts is inserted into the respective through-holes from a side of the second end frame and screwed into the first end frame, to thereby firmly connect the first and the second end frames to each other.
Claims11
An electric rotating machine, which is applied to an electric power steering device of a vehicle and which is mounted to a fixing portion of the vehicle, comprising:
- an electric motor portion having;
- i) a stator having a cylindrical stator core and a winding wound on the stator core or a supporting member fixedly supporting the stator at its inside;
- and
- ii) a rotor rotatably provided inside of the stator;
- a control portion for controlling power supply to the winding of the electric motor portion;
- a first end frame provided at a first axial end of the stator, wherein the control portion is mounted to a rear side of the first end frame opposite to the stator;
- a second end frame provided at a second axial end of the stator and fixed to the fixing portion of the vehicle, wherein the first end frame and the second end frame hold between them the stator or the supporting member in an axial direction of the electric rotating machine;
- multiple through-holes formed at a radial-outer periphery of the second end frame;
- and
- multiple through-bolts, each of which is inserted through each through-hole and screwed into the first end frame in order to firmly connect the first and the second end frames to each other, wherein each of the through-bolts is assembled to the first and the second end frames from an axial end side of the second end frame.
An electric rotating machine, which is applied to an electric power steering device of a vehicle and which is mounted to a predetermined fixing portion of the vehicle, comprising:
- a stator having a cylindrical stator core and a winding wound on the stator core;
- a rotor rotatably provided inside of the stator;
- a control portion for controlling power supply to the winding of the stator;
- a first end frame provided at a first axial end of the stator, wherein the control portion is fixed to a rear side of the first end frame so that the first end frame is arranged between the stator and the control portion;
- a second end frame provided at a second axial end of the stator and fixed to the fixing portion of the vehicle, wherein the first end frame and the second end frame hold the stator between them in an axial direction of the electric rotating machine;
- multiple through-holes formed at a radial-outward periphery of the second end frame;
- and
- multiple through-bolts, each of which is inserted through each of the through-holes and screwed into the first end frame in order to firmly connect the first and the second end frames to each other,
- wherein a distance between a shaft center of the through-bolt and a radial-outer peripheral surface of the stator core in a radial direction of the electric rotating machine is smaller than a radius of a head portion of the through-bolt.
An electric rotating machine, which is applied to an electric power steering device of a vehicle and which is mounted to a predetermined fixing portion of the vehicle, comprising:
- a stator having a cylindrical stator core and a winding wound on the stator core;
- a cylindrical supporting member for fixedly supporting the stator at an inside of the cylindrical supporting member;
- a rotor rotatably provided inside of the stator;
- a control portion provided for controlling power supply to the winding of the stator;
- a first end frame provided at a first axial end of the stator, wherein the control portion is fixed to a rear side of the first end frame so that the first end frame is arranged between the stator and the control portion;
- a second end frame provided at a second axial end of the stator and fixed to the fixing portion of the vehicle, wherein the first end frame and the second end frame hold the cylindrical supporting member between them in an axial direction of the electric rotating machine;
- multiple through-holes formed at a radial-outward periphery of the second end frame;
- and
- multiple through-bolts, each of which is inserted through each of the through-holes and screwed into the first end frame in order to firmly connect the first and the second end frames to each other.
- wherein a distance between a shaft center of the through-bolt and a radial-outer peripheral surface of the cylindrical supporting member in a radial direction of the electric rotating machine is smaller than a radius of a head portion of the through-bolt.
An electric rotating machine, which is applied to an electric power steering device of a vehicle and which is mounted to a predetermined fixing portion of the vehicle, comprising:
- a stator having a cylindrical stator core and a winding wound on the stator core;
- a cup-shaped supporting member having;
- a first cylindrical portion for fixedly supporting the stator at an inside of the first cylindrical portion;
- and a second cylindrical portion for fixedly supporting a first bearing;
- a rotor having a rotating shaft and rotatably provided inside of the stator;
- a control portion provided for controlling power supply to the winding of the stator;
- a first end frame provided at a first axial end of the stator, wherein the control portion is fixed to a rear side of the first end frame so that the first end frame is arranged between the stator and the control portion;
- a second end frame provided at a second axial end of the stator and fixed to the fixing portion of the vehicle, wherein the first end frame and the second end frame hold the cup-shaped supporting member between them in an axial direction of the electric rotating machine, wherein the second end frame firmly supporting a second bearing so that the rotating shaft of the rotor is rotatably supported by the first and the second bearings;
- multiple through-holes formed at a radial-outward periphery of the second end frame;
- and
- multiple through-bolts, each of which is inserted through each of the through-holes and screwed into the first end frame in order to firmly connect the first and the second end frames to each other,
- wherein a distance between a shaft center of the through-bolt and a radial-outer peripheral surface of the cup-shaped supporting member in a radial direction of the electric rotating machine is smaller than a radius of a head portion of the through-bolt.
Dependencies are inferred from the claim text.