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    • 11. 发明专利
    • CONTROL DEVICE FOR AUTOMATIC TRANSMISSION
    • JPH0526343A
    • 1993-02-02
    • JP17652491
    • 1991-07-17
    • HITACHI LTDHITACHI AUTOMOTIVE ENG
    • SATO SUSUMU
    • F16H61/14F16H59/16F16H59/68
    • PURPOSE:To prevent lockup shocks and the trouble of an engine by properly setting a lockup control variable for a clutch using the history of past lockups when an accelerator is stepped so that a lockup is provided when a vehicle is started and not provided when a clutch pressure plate is re-stepped on. CONSTITUTION:A control unit obtains throttle opening information 13 and velocity information 15 and uses a lockup determination map to determine whether or not the stepping-on of a clutch pressure plate in question is contained in the lockup area of the map. If not, the control unit 1 determines that the clutch pressure plate has been re-stepped on and sends a duty signal to a torque converter telling it to provide the maximum current value otherwise, a rotational deviation (e) is determined from an engine rotation signal 12 and an input rotation signal 14 and feedback control causes a lockup duty signal 16 to be generated based on the rotational deviation (e). When the rotational deviation (e) becomes smaller, the control unit 1 switches feedback control to start controlling the torque converter 7.
    • 12. 发明专利
    • INTAKE PORT HAVING ROTARY CLEANING BODY AND VACUUM CLEANER EQUIPPED WITH SAID PORT
    • JPH04138123A
    • 1992-05-12
    • JP26269290
    • 1990-09-28
    • HITACHI LTD
    • SATO SUSUMUISHIKAWA HIROKI
    • A47L9/04
    • PURPOSE:To prevent a blade end from being entangled with waste thread, hair or the like by forming a projection in an axial direction from a side wall faced to at least one end of the blade, and keeping the projection in contact with the blade. CONSTITUTION:In an intake port body 1 located on the periphery of a rotary cleaning body 7 rotatable within a roughly box-shaped intake port 6, and equipped with a soft and flexible blade 14 extended approximately in an axial direction, a side wall 6a along the lengthwise direction of the intake port 6 is provided with a projection body 22 of flexible material such as soft vinyl chloride synthetic resin, extending in an axial direction over length more than enough to contact the edge 14a of the blade 14. The projection body 22 is approximately cylindrical or prismatic. Waste thread, hair or the like caught along the end of the blade 14 causes the deflection thereof, and moves toward the end where resiliency against the deflection is weak, finally riding on the projection body 22. As a result, a tautness effect due to the waste thread, hair or the like is weakened. At the same time, the waste thread, hair or the like is repeatedly beaten, loosened with the rotating blade 14, and sucked into a cleaner, thereby eliminating the entangled thread, hair or the like.
    • 13. 发明专利
    • CONTROL OF AUTOMATIC TRANSMISSION FOR VEHICLE
    • JPH0492156A
    • 1992-03-25
    • JP20685890
    • 1990-08-06
    • HITACHI LTDHITACHI AUTOMOTIVE ENG
    • SATO SUSUMUSATO KAZUHIKO
    • F16H9/00F16H59/06F16H61/00F16H61/02
    • PURPOSE:To realize a comfortable drive by controlling a value gained by way of adding a rate of change of time most newly specified to a target speed change ratio at that point of time when the gained speed change ratio does not change. CONSTITUTION:A target value of speed change control by a direct current motor 4a is decided by MPU 11. This processing is periodically started, and when it is started, a speed change ratio to correspond with a car speed VS and a throttle opening TVO at that time are read out from a lattice point map. Thereafter, the difference between the speed change ratio gained from the lattice point map at the previous time of change and the speed change ratio gained at the time of processing one cycle before is gained, and then a ratio of change of time of a target value of a speed change ratio is gained. Thereafter, when the speed change ratio read out from the lattice point map changes, a target speed change ratio is not made to be the changed value as it is, and it is controlled to approach the changed target value at this rate of change of time, and consequently, sudden change of the target value does not take place.
    • 14. 发明专利
    • SUCTION PORT HAVING ROTARY CLEANING BODY
    • JPH0415024A
    • 1992-01-20
    • JP11761590
    • 1990-05-09
    • HITACHI LTD
    • SUNAKAWA MASAROSAGAWA KOICHISATO SUSUMU
    • A47L9/04A47L5/30
    • PURPOSE:To prevent the entanglement of thread scraps, hair and cotton dust by arranging a flexible soft blade in spiral form on a rotary cleaning body and continuously forming fine window parts at the part which is in contact with the cleaning surface at the top edge of the blade. CONSTITUTION:A rotary cleaning body 7 is driven by a motor 11. The part which is in contact with the cleaning surface at the top edge of a blade 14 deflects, and the common dust is scraped up by the elastic force. In this case, thread scraps, hair, etc., are once caught by a fine window part 15 and scraped up, and allowed to smoothly pass through a bent joint 4 on a suction air stream and caught into the cleaner body. Accordingly, the entanglement and rolling of the thread scraps, hair, cotton dust, etc., on a cleaning rotary body 7 are prevented. Further, since no projection part exists in the vicinity of the top edge of a blade 14, a floor surface is prevented from being damaged. In particular, the wool of a carpet is prevented from being plucked.