Electric compressor
OwnerTohru Tanakainventor
Life of this patent
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Abstract
An electric compressor includes: a housing of an electric motor that is a power source of a compressor unit; a rotor that rotates inside the housing of the electric motor; a coil spring biasing the rotor in a rotation axis direction; a bearing interposed between the electric motor and the housing of the electric motor, and including an inner ring held by the rotor, and an outer ring biased by the coil spring to abut against an abutting portion of the housing of the electric motor; and a stopper that prohibits the rotor from displacing beyond a predetermined limit displacement amount against the biasing of the coil spring, and that allows the rotor to displace within the limit displacement amount. When the rotor is displaced to the limit displacement amount, the coil spring after being deformed has a closed height or more.
Claims20
An electric compressor comprising:
- a housing accommodating a motor, wherein the housing comprises an abutting portion that protrudes inward in a radial direction from an inner peripheral surface of the housing and is located between the motor and an impeller in a rotation axis direction;
- a rotor rotating around a rotation axis in the housing;
- a pressurizing spring biasing the rotor in the rotation axis direction;
- a rolling bearing that is interposed between the housing and the rotor, and comprises:
- an inner ring holding the rotor;
- and
- an outer ring biased by the pressurizing spring to abut against the abutting portion of the housing in the rotation axis direction;
- and
- a stopper that prohibits the rotor from displacing beyond a predetermined limit displacement amount against a biasing of the pressurizing spring, and that allows the rotor to displace within the limit displacement amount,
- wherein, when the rotor is displaced to the limit displacement amount, the pressurizing spring after being deformed has a height that is equal to or more than a closed height of the pressurizing spring.
An electric compressor comprising:
- a housing accommodating a motor, wherein the housing comprises an abutting portion that protrudes inward in a radial direction from an inner peripheral surface of the housing and is located between the motor and an impeller in a rotation axis direction;
- a rotor that comprises a rotation shaft and rotates around a rotation axis in the housing;
- a pressurizing spring that biases the rotor in the rotation axis direction from a second end of the housing to a first end of the housing;
- a first rolling bearing interposed between the housing and the rotor in a radial direction and biased by the pressurizing spring to abut against the abutting portion of the housing in the rotation axis direction,
- a retainer interposed between the rotor and the second end of the housing in the rotation axis direction, and
- a stopper that is interposed between the retainer and the second end of the housing in the rotation axis direction with a gap between the retainer and the stopper, wherein the gap corresponds a predetermined limit displacement amount of the rotor.
An electric compressor comprising:
- a housing accommodating a motor, wherein the housing comprises an abutting portion that protrudes inward in a radial direction from an inner peripheral surface of the housing and is located between the motor and an impeller in a rotation axis direction;
- a rotor that comprises a rotation shaft and rotates around a rotation axis in the housing;
- a pressurizing spring that biases the rotor in the rotation axis direction from a second end of the housing to a first end of the housing;
- a first rolling bearing interposed between the housing and the rotor in a radial direction and biased by the pressurizing spring to abut against the abutting portion of the housing in the rotation axis direction,
- a retainer interposed between the rotor and the second end of the housing in the rotation axis direction, and
- a stopper that is interposed between the retainer and the second end of the housing with a gap between the stopper and the second end of the housing, wherein the gap corresponds a predetermined limit displacement amount of the rotor.
Dependencies are inferred from the claim text.