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1. 发明专利

DE3600733A1 未知
公开(公告)号：DE3600733A1
公开(公告)日：1986-07-17
申请号：DE3600733
申请日：1986-01-13
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： IMOTO YUZO , HATTORI YOSHIYUKI , TAKEI TOSHIHIRO , TANAKA TARO
IPC分类号： B60T8/36 , B60T8/42 , B60T8/48 , F16D55/224 , F16D65/14 , F16D65/18 , H01L41/09 , B60T8/32 , F15B9/12 , H01L41/08

2. 发明专利

JPS62184284A HYDRAULIC CHANGEOVER VALVE 失效
公开(公告)号：JPS62184284A
公开(公告)日：1987-08-12
申请号：JP2438886
申请日：1986-02-06
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： INAGAKI MITSUO , TAKEDA KENJI , SASAYA HIDEAKI , HATTORI YOSHIYUKI
IPC分类号： F16K11/044 , F16K31/02
摘要： PURPOSE:To achieve the enhancement in tresponsiveness by providing a piezoelectric element by which the pressure in an oil pressure chamber is increased or decreased, and a throttling means by which the pressure in the oil pressure chamber is made approximately equal to the pressure inside a high-pressure introducing chamber within a prescribed time. CONSTITUTION:When a high voltage is instantaneously applied on an electrostriction type actuator 17, a piston 20 displaces upward to reduce the volume of an oil pressure chamber 21. Accordingly, the pressure inside the oil pressure chamber 21 rises suddenly to displace a spool valve 13 upward. As a result, the communication between a high-pressure port 11 and a control port 12 is cut off, and the control port 12 is communicated with a low-pressure port 31. And in this case, since the operating oil inside the oil pressure chamber 21 flows into a high-pressure introducing chamber 32 side through a throttle 27a and a communicating passage 27, the inclined surface 132 of the spool valve soon comes to be seated on a stepped part 151.

3. 发明专利

JPS62147184A HYDRAULIC SHUT-OFF VALVE 失效
公开(公告)号：JPS62147184A
公开(公告)日：1987-07-01
申请号：JP28777485
申请日：1985-12-23
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： INAGAKI MITSUO , TAKEDA KENJI , SASAYA HIDEAKI , HATTORI YOSHIYUKI
IPC分类号： F16K31/02 , B60T8/48 , F16K31/42
摘要： PURPOSE:To obtain a compact hydraulic shut-off valve having stable characteristics by providing a spool valve adapted for changing the flow rate in response to the differential pressure between an inlet port and an outlet port and driven by an electrostrictive actuator. CONSTITUTION:There is provided between an inlet port 11 and an outlet port 12 an axially slidable spool valve 13. The spool valve 13 is axially moved by activation of an electrostrictive actuator 17 so as to complete communication between both ports 11, 12, and as the pressure of the fluid entering through the inlet port 11 acts on the spool valve 13 in the axial direction, the opening degree of the flow passage to be opened and closed by the movement of the spool valve 13 is set according to the pressure of the entering fluid and resiliency of the spring 25. Therefore, the flow rate through the valve can be kept constant, irrespective of the differential pressure between the inlet and outlet ports, and furthermore, the characteristics of the electrostrictive actuator assures good responsibility of the hydraulic shut-off valve.

4. 发明专利

JPS61287854A VEHICLE RUNNING CONTROL DEVICE 失效
公开(公告)号：JPS61287854A
公开(公告)日：1986-12-18
申请号：JP12803285
申请日：1985-06-14
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： IMOTO YUZO , HATTORI YOSHIYUKI , INAGAKI MITSUO , TAKEDA KENJI
IPC分类号： B60T8/18 , B60T8/44 , B60T13/66 , B60T13/74 , F16D65/14
摘要： PURPOSE:To prevent a high pressure from being applied to a hydraulic pressure supply piping, by setting a brake force for each wheel by means of a piezoelectric piston mechanism provided in each wheel cylinder. CONSTITUTION:A hydraulic pressure condition in a master cylinder 12 is monitored by hydraulic pressure sensors 19a and 19b, and when the hydraulic pressure is increased, cut valves 16a-16d are closed. Under the condition, wheel cylinder parts of control mechanisms 14a-14d of wheels are separated from master cylinder parts, and a volume of each wheel cylinder is partitioned. An electronic control unit 17 compares a depression force of a brake pedal with a hydraulic pressure in each wheel cylinder, and controls a voltage to be applied to a piezoelectric piston mechanism for adjusting the hydraulic pressure in each wheel cylinder.

5. 发明专利

JPS62184961A FLUID SELECTOR VALVE AND ANTISKID CONTROL DEVICE 失效
公开(公告)号：JPS62184961A
公开(公告)日：1987-08-13
申请号：JP2570986
申请日：1986-02-10
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TAKEDA KENJI , INAGAKI MITSUO , SASAYA HIDEAKI , HATTORI YOSHIYUKI
IPC分类号： B60T8/48 , B60T8/1761
摘要： PURPOSE:To miniaturize a fluid selector valve by connecting and disconnecting a second spool for connecting and disconnecting a first and a second port to and from at least either of a pilot chamber and the first and a third port by means of an electrostriction type actuator. CONSTITUTION:A first spool 110 is slidably housed in a cylinder bore 104 provided in a housing 99, and a pilot chamber 105 and a cylinder chamber 106 are formed on both ends of the spool 110 respectively. A first valve part which connects and disconnects a second and a third port 102, 103 is formed by the seat part 113 and the shoulder part 109 of the first spool 110, while a second valve part which connects and disconnects a first and the second port 101, 102 is formed by the seat part 120 and the shoulder part 126 of an inner spool 117. Piezoelectric selector valves 200, 200' are provided to control the introduction of pressure fluid into the pilot chamber 105 and carry out changeover between the first and the second spools 110, 117.

6. 发明专利

JPS61228175A SWITCHING CONTROL VALVE 失效
公开(公告)号：JPS61228175A
公开(公告)日：1986-10-11
申请号：JP6685085
申请日：1985-03-30
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： IMOTO YUZO , TAKEI TOSHIHIRO , HATTORI YOSHIYUKI , INAGAKI MITSUO
IPC分类号： F16K31/02 , B60T8/1761 , B60T8/48
摘要： PURPOSE:To provide a switching valve which enables to perform high-precise actuation in a sufficient temperature range, by a method wherein a valve piston mechanism is driven by a piezo-electric mechanism in which piezo-electric elements are laminated. CONSTITUTION:When a switching valve 21 is closed by means of a pilot pressure and thereafter a high voltage signal is applied on and fed to a piezo-electric mechanism 1, the piezo-electric mechanism 14 is expanded, and according to the expansion amount, a piston 13 is driven in a direction in which an oil chamber 16 is contracted. This causes increase and control of an oil pressure in the oil chamber 16, driving of a valve piston 17, and close of a passage running between first and second ports 19 and 20. When an ambient temperature is sharply increased, since the coefficients of thermal expansion of materials, with which piezo-electric elements 141, 142, ... and a case 11 are respectively formed, are widely different from each other, a distance between the piston 13 and te valve piston 17 is changed. However, since a given oil pressure is exerted on the interior of the oil chamber 16 through the switching valve 21, the piston 31 is moved, and the expansion state of the piezo-electric mechanism 14 is accurately reflected in movement of the valve piston 16.

7. 发明专利

JPS61192980A OPENING AND CLOSING VALVE OF FLUID 失效
公开(公告)号：JPS61192980A
公开(公告)日：1986-08-27
申请号：JP3170885
申请日：1985-02-19
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： INAGAKI MITSUO , SASAYA HIDEAKI , TAKEDA KENJI , HATTORI YOSHIYUKI
IPC分类号： F16K31/02
摘要： PURPOSE:To obtain an opening and closing valve of fluid formed in a small size further provided with a very high speed response, by using an electrostrictive element and utilizing an electrostrictive effect so as to drive a spool valve. CONSTITUTION:If voltages is applied to a laminated electrostrictive element (PZT) 3, the PZT extends by its characteristic moving a piston 5 in a direction decreasing volume of the first pressure oil chamber 9 while increasing pressure in its inside, and a spool valve 10 moves by a decrease of the volume to a side of the second pressure oil chamber 16. Then an opening and closing valve, connecting a branch passage 15a of an oil passage 15 with a recessed part 8a, allows high pressure working fluid in the second pressure oil chamber 16 to successively flow at a high speed to the oil passage 15, recessed part 8a, outlet passage 19 and an outlet hole 20. The downstream side of a throttle part 17 generates a low pressure as compared with the upstream side, and the opening and closing valve, allowing high pressure oil in the first pressure oil chamber 9 to flow leaking through a clearance L and moving the spool valve 10 to a side of the first pressure oil chamber 9 by a pressure difference between the first and second pressure oil chambers 16, 9 and the tension of a spring 22, cuts off communication of the branch passage 15a with the recessed part 8a.

8. 发明专利

JPS61236975A PIEZOELECTRIC HYDRAULIC SWITCHING VALVE 失效
公开(公告)号：JPS61236975A
公开(公告)日：1986-10-22
申请号：JP7755485
申请日：1985-04-13
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： TAKEDA KENJI , INAGAKI MITSUO , SASAYA HIDEAKI , HATTORI YOSHIYUKI
IPC分类号： F16K31/02 , F16K31/00
摘要： PURPOSE:To produce a small shaped switching valve having excellent stability and high performance inspite of the use of a highly answerable piezoelectric element by transmitting the displacement of a piezoelectric actuator to a plunger through a stroke amplifying mechanism. CONSTITUTION:When applied with the some quantity of voltage, a piezoelectric element 23 elongates upward. Consequently, a plunger 31 moves downward, but since a spring 41 is pressing a rod 30, the rod 30 does not move up to a certain voltage V1, and the movement of plunger 31 transforms into the move ment of a retainer as it is. This movement is kept until a ball 29 comes into contact with the valve seat 27b of an inlet port 27a, and further when raised up to the voltage V2, this voltage brings the shoulder 31b of the plunger 31 into contact with the shoulder 30a of the rod 30. Eventually when the applied voltage V is in the condition of V1 V2, the drain port 35a communicates with the output port 35b.

9. 发明专利

DE2830883A1 未知
公开(公告)号：DE2830883A1
公开(公告)日：1979-01-18
申请号：DE2830883
申请日：1978-07-13
申请人： NIPPON SOKEN
发明人： INAGAKI MITSUO , HATTORI YOSHIYUKI , TAGUCHI MASAHIRO
IPC分类号： H02K1/24 , H02K19/22

10. 发明专利

DE3538809C2 未知
公开(公告)号：DE3538809C2
公开(公告)日：1996-05-09
申请号：DE3538809
申请日：1985-10-31
申请人： NIPPON DENSO CO
发明人： IMOTO YUZO , WAKATA HIDEO , TAKEI TOSHIHIRO , HATTORI YOSHIYUKI , NOMURA YOSHIHISA
IPC分类号： B60T8/46 , B60T8/1761 , B60T8/44 , B60T8/48 , B60T8/32
摘要： An antiskid control device including a main line system for a usual braking operation and a subline system for an antiskid control, in which the flow rate of the subline system is smaller than the flow rate of the mainline system. The main piping system is provided with a cut-off valve which opens at a usual braking operation and closes at an antiskid control. The subline system is provided with a first control valve for opening the subline system and a second control valve for opening or closing the subline system at an antiskid control. The second control valve opens the subline system to supply a small quantity of brake oil to the wheel cylinder, and closes the subline system to release the brake oil in the wheel cylinder to the outside thereof.

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