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    • 1. 发明专利
    • HYDRAULICALLY DRIVEN PUMP
    • JP2001263251A
    • 2001-09-26
    • JP2000077842
    • 2000-03-15
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F04B1/16F04B9/111F04B15/06F04B43/02F04B43/06F04B43/067
    • PROBLEM TO BE SOLVED: To increase a degree of freedom of setting a position for arranging pump body part and pump driving part when arranging the pump driving part outside a hydraulic fluid by immersing the pump body part in the hydraulic fluid. SOLUTION: This hydraulically driven pump has the pump body part 3 arranged inside the hydraulic fluid stored in a vessel C and the pump driving part 2 arranged outside the hydraulic fluid, and the pump driving part 2 forcibly sends the hydraulic fluid by driving the pump body part 3 via hydraulic pressure transmitted via a hydraulic pressure transmitting pipe 4. The pump body part 3 has a pair of pump elements 31, and the respective pump elements 31 have a pump chamber 38 partitioned by a cylindrical flexible film 37, a suction valve 34 and a delivery valve 36 continuing with the pump chamber 38 and a hydraulic pressure chamber 39 arranged outside the pump chamber 38 so as to face to the flexible film 37. The pump driving part 2 has a pair of plungers 13 actuated by a swash plate 16 rotatably driven by a driving source 14, and the hydraulic pressure generated by the respective plungers 13 is transmitted to the hydraulic pressure chamber 39 of the corresponding pump elements 31.
    • 3. 发明专利
    • SPEED CHANGE GEAR
    • JPH02212651A
    • 1990-08-23
    • JP3204289
    • 1989-02-10
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F16H15/50F16H15/52
    • PURPOSE:To enable the reduction of local friction of a rolling body and the like through enlargement of a speed change range by a method wherein rotation of an input shaft is transmitted to the rolling body, and the rolling body is revolved as it is rotated in a state to make contact with first and second guide surfaces and a guide groove. CONSTITUTION:When, by a transmission gear, a cylinder member 5 is moved laterally, a round part 6a of a rolling body 6 engaged with a guide groove 26 is moved laterally in a state to be engaged with the groove 26, and inclination of the rolling body 6 is changed. However, since a size relation is established among first and second guide surfaces 14 and 17, the groove 26, the round part 6a of the rolling body 6, and a spherical part 6b, even when inclination is changed, a contact state therebetween can be held. Since through rotation of an input shaft 2, a force, by which an input member 10 is forced to approach the rolling body 6, is exerted on the input member, contact of the rolling body 6 with the guide surfaces 14 and 17 and the groove 26 is further ensured. Rotation of the input member 10 occasioned by rotation of the input shaft 2 is transmitted to the rolling body 6, the rolling body 6 is revolved as it is rotated in a state that the rolling body is brought into contact with the guide surfaces 14 and 17 and the groove 26. A current differential action causes the change of the speed of rotation of the input shaft 2 to transmit it to an output shaft 3.
    • 5. 发明专利
    • JPH0138198B2
    • 1989-08-11
    • JP3616583
    • 1983-03-05
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F04B43/02F04B43/067
    • PURPOSE:To make a discharge fluid rate alterable at will, by securing a spherical body tight to an input shaft being connected to a motor output shaft, while setting up a driving swash plate rockably on the circumference of this spherical body. CONSTITUTION:An input shaft 4 is shiftably connected to a motor output shaft 3 axially, while a spherical body 6 is secured tight to a tip end of the input shaft 4, and a fulcrum shaft 7 is solidly connected to the input shaft 4 of the spherical body 6 and a part at the opposite side as one body, while a driving swash plate 9 is supported on the circumference of the spherical body 6 so as to cause it to be solidly rotated by a Woodruff key 10 and to make it rockable axially. With this constitution, following rotation of these output and input shafts 3 and 4, a tilt angle in the driving swash plate 9 can be altered without altering the bottom dead point position of a piston 26 to be driven for reciprocation by the driving swash plate 9 so that the quantity of the fluid discharged out of a pump chamber 34 can be optionally altered.
    • 6. 发明专利
    • ROTARY PUMP
    • JPH09170585A
    • 1997-06-30
    • JP32882395
    • 1995-12-18
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F04D13/02H02K7/14H02K49/10
    • PROBLEM TO BE SOLVED: To provide a rotary pump simple in structure, excellent in durability and easy in maintenance. SOLUTION: At least a part of a pump chamber 7 is constituted of a bulkhead 6 of a non-magnetic body, and a pump rotor 12 stored in the pump chamber 7 free to rotate and a drive rotor 10 arranged out of the pump chamber 7 and rotated by a motor 4 are placed against each other with the bulkhead 6 between them. The pump rotor 12 is rotated by transmitting rotation of the drive rotor 10 to it by attractive force working between magnets 11, 14 respectively provided on the pump rotor 12 and the drive rotor 10, working fluid sucked from a suction port 21 is drained from a drain port 22 through a shaft hole 123 of the pump rotor 12 and a radial hole 124 . The pump rotor 12 is positioned in the axial direction by making a ceramic ball 13 provided on a rotation axis L of the pump rotor 12 contact with the bulkhead 6 by attractive force.
    • 7. 发明专利
    • AUTOMATIC TRANSMISSION
    • JPS6376947A
    • 1988-04-07
    • JP21865986
    • 1986-09-17
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F16H15/50
    • PURPOSE:To eliminate the need for using a bearing on a rotation transmitting part and simplify the whole structure by forming an annular rolling ball driving face on the outer peripheral face of the end part of an input shaft and carrying out speed change by means of the friction power transmission of a ring rolling ball in between said driving face and a rolling ball pressing face on the output side. CONSTITUTION:A pair of guide rings 4, 5 are adjacently provided on the inner peripheral face side, on the center part in the axial direction of a cylindrical casing 1, and plural engaging parts 61-63, 71-73 are formed at an equal interval on the outer peripheral parts on the mutually opposite sides of the rings 4, 5 respectively. Ar!d, engaging balls 81-83 which are engaged with the engaging recessed parts 91-93 formed on the inner peripheral face of the casing 1 are engaged with the engaging parts respect- tively. Also, a rolling ball driving part 15 having a pair of rolling ball driving faces 16, 17 which are brought into contact with three rolling balls 121-123, 131-133 respectively, is formed on the end part of an input shaft 2. And, pressing rings 23, 27 which are energized by springs are provided displaceably along torque transmitting rods 191-193, in the mutually opposite positions interposing the rolling ball driving part 15 and the rolling balls 121-123, 131-133.
    • 9. 发明专利
    • STEPLESS SPEED REDUCTION GEAR
    • JPS61244946A
    • 1986-10-31
    • JP8592885
    • 1985-04-22
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F16H3/76
    • PURPOSE:To aim at establishing a safe operation and at saving energy, by providing a swing lever which i engaged with a gear shaft meshed with an output shaft, through a one-way clutch, and an eccentric rotary body which is coupled with an input shaft by means of a diagonal key, so that rotation in accordance with loads may be obtained and the rotation is stopped when an overload condition is effected. CONSTITUTION:A swing lever which is engaged with the rotary shaft 26 of a first gear 27 engaged with a second gear 28 on an output shaft 8, through an one-way clutch 30, is made to abut against an eccentric rotary body 14 which is coupled with an input shaft 6 by means of a diagonal key 12. At this time the swing lever intermittently rotates the output shaft 8 in one direction through the rotary shaft 26 in accordance with an eccentricity E caused by a return spring 29 and the eccentric rotary body 14. When the load of the output shaft 8 increases, the eccentricity E of the eccentric rotary body 14 decreases so that the swing angle of the swing lever also decreases. Therefore, the rotation in accordance with the load may be obtained, and if an overload condition is effected, the rotation of the output shaft 8 comes to a stop, thereby it is possible to aim at establishing a safe operation and at saving energy.
    • 10. 发明专利
    • SPEED CHANGING DEVICE
    • JPH06137398A
    • 1994-05-17
    • JP12713392
    • 1992-05-20
    • ITO KAZUICHI
    • ITO KAZUICHI
    • F16H25/06
    • PURPOSE:To enlarge a speed changing range, minify partial wear of a rolling body and the like, and improve the degree of freedom of design. CONSTITUTION:A retainer 4 is coaxially arranged rotatably or fixedly around a first shaft 2 and a second shaft 3 coaxially arranged, and a cylindrical member 5 is arranged around the retainer 4 concentrically and movably in the axial direction. A plurality of rolling bodies 5 are held with the retainer 4 so as to be autorotatable centering around their axes, symmetric two positions of the rounded parts (6a) provided on the full circumferential part of the rolling body 6 are brought in contact with a first guide face 23 of taper shape provided on the first shaft 2 and the bottom of a guide groove 22 of circular arc section provided on the inner circumferential face 5a of the cylindrical member 5, and the spherical face part 6b provided on one end part of the rolling body 6 is brought in contact with a second guide face 24 provided on an intermediate member 16 rotating in one body with the second shaft 3.