# US 6,719,538 B2 · Rotating apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,719,538 B2 - Document ID: US6719538B2 - Status: Granted - Kind: B2 - Application number: 10/095,877 - Filed: 2002-03-11 - Published: 2002-09-19 - Granted: 2004-04-13 - Earliest claimed: 2001-03-19 - Assignees: Kabushiki Kaisha Toyota Jidoshokki - Inventors: Masaki Ota; Masahiro Kawaguchi; Yasuharu Odachi; Masanori Sonobe; Taku Adaniya - Web page: https://patentgrep.com/patent/US6719538B2 ## CPC - F04B 27/0895: {driving means} - B60H 1/3222: {characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives (B60H1/3208, B60H1/3226 take precedence)} - F04B 2201/1202: Torque on the axis - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES ## Abstract The present invention provides a rotating apparatus. The rotating apparatus includes a rotor and a motor generator. The rotor includes a belt holder on its outer circumferential surface. The belt holder transmits power between an engine and the rotor. The motor generator is accommodated in and operably connected to the rotor. The motor generator selectively functions as at least one of a motor and a generator. The motor generator is arranged inside the belt holder such that the motor generator is surrounded by the belt holder. ## Claims ### Claim 1 A rotating apparatus comprising: a rotating body, wherein the rotating body includes a power transmitting portion on its outer circumferential surface, and wherein the power transmitting portion transmits power between an external drive source and the rotating body; and a rotary electric device, which is accommodated in and operably connected to the rotating body, wherein the rotary electric device alternately functions as a motor or a generator, wherein the rotary electric device is arranged inside the power transmitting portion such that the rotary electric device is surrounded by the power transmitting portion. ### Claim 2 (depends on 1) The rotating apparatus according to claim 1, wherein the rotating body is a pulley and the power transmitting portion of the rotating body is a belt holder about which a belt, which is connected to the external drive source, is wound. ### Claim 3 (depends on 1) The rotating apparatus according to claim 1, wherein substantially the entire outer circumferential surface of the rotating body forms the power transmitting portion. ### Claim 4 (depends on 1) The rotating apparatus according to claim 1, wherein the rotary electric device includes a stator and a rotary element, and the stator and the rotary element are arranged inside the power transmitting portion. ### Claim 5 (depends on 1) The rotating apparatus according to claim 1, wherein the rotating body is installed in a fluid machine, wherein the fluid machine includes a housing and a drive shaft, wherein the rotating body and the rotary electric device are supported by the housing of the fluid machine and operably connected to the drive shaft of the fluid machine, and wherein the power transmitting portion transmits power between the drive shaft of the fluid machine and the external drive source. ### Claim 6 (depends on 5) The rotating apparatus according to claim 5, wherein the external drive source is a drive source of a vehicle, and wherein, when the drive source is stopped, the rotary electric device functions as a motor and drives the drive shaft of the fluid machine. ### Claim 7 (depends on 5) The rotating apparatus according to claim 5, wherein the external drive source is a drive source of a vehicle, and wherein, when the drive source is running, the rotary electric device functions as a generator. ### Claim 8 (depends on 5) The rotating apparatus according to claim 5, wherein the fluid machine is a compressor, which forms a part of a refrigerant circuit of an air conditioner. ### Claim 9 (depends on 8) The rotating apparatus according to claim 8, wherein the compressor includes a control chamber and a control valve, which adjusts the pressure in the control chamber, and wherein the displacement of the compressor is controlled by adjusting the pressure in the control chamber, wherein the control valve includes a valve body and a pressure sensing mechanism, wherein the pressure sensing mechanism detects the pressure difference between two pressure monitoring points located in a refrigerant passage of the refrigerant circuit, and moves the valve body to change the displacement of the compressor to cancel the fluctuations of the detected pressure difference. ### Claim 10 (depends on 1) The rotating apparatus according to claim 1, wherein the rotating body includes a pulley, which includes the power transmitting portion, and a ring, which is connected to the rotary electric device and rotates integrally with the rotary electric device, and wherein a clutch mechanism, which connects and disconnects the pulley and the ring, is located between the pulley and the ring. ### Claim 11 (depends on 10) The rotating apparatus according to claim 10, wherein the clutch mechanism is a one-way clutch, which permits the power transmission from the pulley to the ring, and selectively disconnects the power transmission from the ring to the pulley. ### Claim 12 (depends on 10) The rotating apparatus according to claim 10, wherein the clutch mechanism is arranged inside the power transmitting portion such that the clutch mechanism is surrounded by the power transmitting portion. ### Claim 13 (depends on 10) The rotating apparatus according to claim 10, wherein the ring includes reducing means in a power transmitting path to reduce the fluctuations of the transmitted torque. ### Claim 14 (depends on 10) The rotating apparatus according to claim 10, wherein the ring includes disconnecting means in the power transmitting path to disconnect to prevent the transmission of the excessive torque. ### Claim 15 (depends on 8) The rotating apparatus according to claim 8, wherein the compressor is a variable displacement compressor. ### Claim 16 (depends on 9) The rotating apparatus according to claim 9, wherein the two pressure monitoring points are located in a discharge pressure zone in the refrigerant circuit. ### Claim 17 (depends on 1) The rotating apparatus according to claim 1, wherein the rotary electric device has a rotation axis and the rotating body has a rotation axis that is coaxial with the rotation axis of the rotary electric device. ### Claim 18 A compressor, which includes a drive shaft and a compression mechanism in a housing, and wherein the drive shaft is rotated by an external drive source, and the compression mechanism draws in, compresses, and discharges fluid in accordance with the rotation of the drive shaft, the compressor comprising: a rotating body, wherein the rotating body includes a power transmitting portion on its outer circumferential surface, and wherein the power transmitting portion transmits power between the external drive source and the rotating body; and a rotary electric device, which is accommodated in and operably connected to the rotating body, wherein the rotary electric device alternately functions as a motor or a generator, wherein the rotary electric device is arranged inside the power transmitting portion such that the rotary electric device is surrounded by the power transmitting portion. ### Claim 19 (depends on 18) The compressor according to claim 18, wherein the rotating body is a pulley and the power transmitting portion of the rotating body is a belt holder about which a belt, which is connected to the external drive source, is wound. ### Claim 20 (depends on 18) The compressor according to claim 18, wherein substantially the entire outer circumferential surface of the rotating body forms the power transmitting portion. ### Claim 21 (depends on 18) The rotating apparatus according to claim 18, wherein the rotary electric device includes a stator and a rotary element, and the stator and the rotary element are arranged inside the power transmitting portion. ### Claim 22 (depends on 18) The rotating apparatus according to claim 18, wherein the external drive source is a drive source of a vehicle, and wherein, when the drive source is stopped, the rotary electric device functions as a motor and drives the drive shaft of the fluid machine. ### Claim 23 (depends on 18) The rotating apparatus according to claim 18, wherein the rotary electric device has a rotation axis and the rotating body has a rotation axis that is coaxial with the rotation axis of the rotary electric device.