专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

51. 发明专利

JPH05332220A HYDRAULIC CONTROLLING VALVE 失效
公开(公告)号：JPH05332220A
公开(公告)日：1993-12-14
申请号：JP13863692
申请日：1992-05-29
申请人： NIPPON SOKEN
发明人： WATANABE KAZUHIDE , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , TSUZUKI SACHIHIRO
IPC分类号： F02M51/00 , F02M59/36 , F16K31/02
摘要： PURPOSE:To provide a hydraulic controlling valve for supplying surely intermittently high oil pressure with a compact weak power actuator. CONSTITUTION:An outer valve 1 provided laterally slidably in a holder 12 is pushed by a spring 8 to close an outer valve seat 5. When the outer valve 1 is moved left by the push of an electrostrictive actuator 17, an inner valve 2 having an inner valve seat 3 capable of closing a fuel port 37 from a high pressure port 13 is inserted in the outer valve 1, and pressure in a back pressure chamber 38 is changed over to high one or low one, so that a needle 27 moves vertically to open and close a nozzle 35 in relation to a high pressure oil reservoir 34. A predetermined diameter balance rod 4 is inserted in the outer valve 1 to offset on ballance high pressure acting on the outer valve 1 in the left and right directions.

52. 发明专利

JPH03229132A CHARACTERISTIC EVALUATING DEVICE FOR ACTUATOR 失效
公开(公告)号：JPH03229132A
公开(公告)日：1991-10-11
申请号：JP2464690
申请日：1990-02-02
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , WATANABE KAZUHIDE
IPC分类号： G01N3/06
摘要： PURPOSE:To evaluate the deformation characteristics of an actuator with high accuracy by applying a sufficiently large load on the actuator, making the distance between a displacement sensor and a pressing surface large, and detecting the quantity of variation in the distance in the form of the quantity of the deformation of the actuator. CONSTITUTION:When a valve means 8 is open, fluid with specific pressure is supplied from a fluid supply source 4 to the back pressure chamber 3a of a piston member 1, which presses the sample actuator 9 whose deformation characteristics are to be evaluated against an opposite member 2 with constant pressure. In this state, the actuator 9 is energized by an electric feeding means 6 to cause the actuator 9 deform, and a displacement quantity detecting means 7 detects the quantity of current deformation. Thus, the deformation characteristics in the state of the constant pressure, i.e. a constant load are known and while the member 1 presses the actuator 9 against the member 2, the valve 8 is closed to place the liquid in the back pressure chamber 3a in a locked state. In this state, a current is supplied to the actuator 9, which deforms to cause variation in the pressing force of the member 1, thereby evaluating the deformation characteristics.

53. 发明专利

JPH11294291A ACCUMULATOR FUEL INJECTION DEVICE 失效
公开(公告)号：JPH11294291A
公开(公告)日：1999-10-26
申请号：JP10467298
申请日：1998-04-15
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO
IPC分类号： F02M45/00 , F02M47/00 , F02M51/06
摘要： PROBLEM TO BE SOLVED: To prevent a high pressure and a low pressure from being directly communicated with each other and to prevent excess high-pressure fuel other than the fuel required for injection control from flowing out by providing a two-way valve of a first throttle and normally opened(NO) on a guiding-in path, and providing a two-way valve of a second throttle and normally closed(NC) on a guiding-out path. SOLUTION: The high-pressure fuel from a high-pressure pump is communicated with a guiding-in path 16 guided to a control chamber 4 above a needle valve 3 via an IN orifice 1 serving as a first throttle through a two-way valve 2 NO. The high-pressure fuel is guided to the vicinity of nozzle hole 7 from the oil sump 6 of a nozzle via a common rail 103. The needle valve 3 is slid in a hollow housing 100 provided with the nozzle hole 7 to open or close the nozzle hole 7. The control chamber 4 is communicated with a guiding-out path 19 returned to a fuel tank 99 via an OUT orifice 8 serving as a second throttle and a two-way valve 9 NC, thereby the outflow of fuel from a high pressure to a low pressure can be prevented.

54. 发明专利

JPH1193800A ACCUMULATOR FUEL INJECTION VALVE 失效
公开(公告)号：JPH1193800A
公开(公告)日：1999-04-06
申请号：JP25201697
申请日：1997-09-17
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO , OKAMOTO ATSUYA
IPC分类号： F02M47/00 , F02M47/02 , F02M63/02
摘要： PROBLEM TO BE SOLVED: To provide an accumulator fuel injection valve capable of restricting the change of a fuel injection valve with simple means, without making an outside accumulating container larger. SOLUTION: An accumulator fuel injection valve has a needle 71 to open/ close an injection hole 72, an oil reservoir 18 to energize the needle to the direction of opening a valve and a fuel passage 16 to guide high-pressure fuel from an accumulating container provided outside to the oil reservoir 18. A control passage 9, communicated with a reservoir 10 as a closed space with a fixed volume, is provided inside a mainbody, separately from the fuel passage 16 and a passage (a needle chamber) 22 communicated with the injection hole 72. The length of the control passage 9 is so set that a time when the needle chamber 22 is at a low pressure with pressure change due to injection can correspond to a time when the high-pressure portion of a pressure wave transmitted from the oil rservoir 18 through the control passage 9 to the reservoir 10 is returned, thus preventing the drop of injection pressure.

55. 发明专利

JPH1181940A SOLENOID VALVE DRIVING DEVICE 失效
公开(公告)号：JPH1181940A
公开(公告)日：1999-03-26
申请号：JP25289297
申请日：1997-09-01
申请人： NIPPON SOKEN
发明人： ARIKAWA FUMIAKI , TSUZUKI SACHIHIRO
IPC分类号： F01L9/04 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To improve durability of a valve by decreasing seating speed in a solenoid valve driving device, and preventing generation of vibration and noises at the time of seating. SOLUTION: This device has a lower spring 21 and an upper spring 21 for respectively energizing a valve 1 in closing and opening directions, and an armature 6 moved unitedly with the valve 1. An upper solenoid 52 is arranged on one end of the armature 6 for closing the valve, while a lower solenoid 51 is arranged on the other end thereof for opening the valve. A valve position detecting means 8 such as a vortex current type displacement sensor is arranged on an upper side of the upper spring 22, for successively detecting the position of the valve 1 at the time of closing. A solenoid driving timing determination means 92 so determines current carrying timing or current value that the valve 1 shows speed at the position immediately before seating, sufficiently slower than that at the position spaced from the seating position. Current carrying to the upper solenoid 52 is controlled by means of a solenoid driving means 91, based on the signal, so as not to generate vibration nor noises.

56. 发明专利

JPH10281034A BALL-SEAT TYPE SOLENOID TWO-WAY VALVE 失效
公开(公告)号：JPH10281034A
公开(公告)日：1998-10-20
申请号：JP8626097
申请日：1997-04-04
申请人： NIPPON SOKEN
发明人： NONOYAMA YOSHIHARU , TSUZUKI SACHIHIRO
IPC分类号： F02M47/00 , F02M51/00 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To prevent any uneven injection flow in an armature chamber in a ball seat type solenoid two-way valve even if coaxiality between a taper of a ball supporter and a seat angle is insufficient by preventing a ball valve from being laterally shifted. SOLUTION: A taper 34 serving as a ball supporter of a needle 29 is formed into a recessed taper having an angle greater than that of a valve seat 36, thereby preventing seat deficiency and valve closing deficiency. A needle inner low pressure passage 35 serving as a pore vertically penetrating the center of the ball supporter of the needle 29 is formed in such a manner as to communicate with a low pressure passage, so that fuel can be drawn from the needle inner low pressure passage 35 serving as the pore and the ball can be returned back to the center of the ball supporter when the needle 29 is lifted to laterally shift a ball. Consequently, it is possible to prevent any uneven injection flow in an armature chamber in a ball seat type solenoid two-way valve by preventing the ball valve from being laterally shifted even if coaxiality between the taper of the ball supporter and a seat angle is insufficient.

57. 发明专利

JPH10227268A ACCUMULATOR FUEL INJECTION DEVICE 失效
公开(公告)号：JPH10227268A
公开(公告)日：1998-08-25
申请号：JP2808597
申请日：1997-02-12
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO , NONOYAMA YOSHIHARU
IPC分类号： F02M37/00 , F02B3/06 , F02D41/02 , F02D41/22 , F02D41/38 , F02D45/00 , F02M37/08 , F02M47/02 , F02M55/02 , F02M63/02
摘要： PROBLEM TO BE SOLVED: To prevent stop of an engine even when a pressure sensor for detecting the pressure in a common rail has a trouble. SOLUTION: When a pressure sensor 9 is judged to be in an abnormal state, a rearl common rail pressure Pc is estimated by a current (i) flowing in a solenoid valve 11 and an engine 2 is continued to operate by using this estimated real common rail pressure Pc . Thereby, as a vehicle is not stopped at the same time as the trouble of the pressure sensor 9, when an occupant is informed by a warning means 16 of the trouble in the pressure sensor 9, he can bring the vehicle in an automobile dealer or garage by running the vehicle.

58. 发明专利

JPH10159678A SAFETY VALVE OF ACCUMULATOR TYPE FUEL INJECTION DEVICE 失效
公开(公告)号：JPH10159678A
公开(公告)日：1998-06-16
申请号：JP31808796
申请日：1996-11-28
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO
IPC分类号： F02M47/02 , F02M55/02 , F02M59/44 , F16K17/04
摘要： PROBLEM TO BE SOLVED: To provide a valve structure which is of a small size, and operates surely even in a condition working superhigh hydraulic operation force such as 100 to 150Mpa. SOLUTION: Since a cylinder 60 formed inside a valve element 6 having the diameter a little smaller than the valve seat 8 of a control port 10, and a balance rod 9 inserted liquidtight and slidable in the cylinder 60 are made as the component elements, the valve opening force of the valve element 6 may be extremely small even though a superhigh fuel pressure is applied to the control port 10. As a result, the spring force of a spring 7 to energize the valve element 6 to the valve closing position may be weak, and a small spring can be used. Consequently, it is effective to make a safety valve 3 in a small size.

59. 发明专利

JPH09289116A MANUFACTURE OF CYLINDRICAL STATOR 失效
公开(公告)号：JPH09289116A
公开(公告)日：1997-11-04
申请号：JP9993096
申请日：1996-04-22
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO , MASUDA KENJI , ICHIKAWA HIROAKI
IPC分类号： F16K31/06 , H01F7/06
摘要： PROBLEM TO BE SOLVED: To manufacture a highly accurate cylindrical stator excellently in yield by gradually narrowing down a plate piece, which is curved in advance into a C shape close to the final form, in two stages by a simple constitution of press-fitting jig and a split collar. SOLUTION: A laminate 13 where many C-shaped plate pieces 12 having high permeability and being equal in thickness to each other are arranged in a spiral form is made. Then, this laminate 13 is inserted into a resinous split collar 14 capable of contraction in the radial direction. Next, the laminate 13 inserted into the split collar 14 is press-fitted while being narrowed down into a metallic fixing ring 23. Next, the top and bottom end faces of the laminate 13 within the metallic fixing ring 23 is fixed by laser welding. Next, it is pressed with a press 40 and the laminate 13 is slid a little from the metallic fixing ring 23, and is inserted into a two-piece ring 42 and a bottom ring 43. Then, the two-piece ring 42 is split and the periphery of the cylinder of the laminate 13 is exposed and it is fixed by laser welding.

60. 发明专利

JPH0945524A STATOR FOR SOLENOID 失效
公开(公告)号：JPH0945524A
公开(公告)日：1997-02-14
申请号：JP19314595
申请日：1995-07-28
申请人： NIPPON SOKEN
发明人： TSUZUKI SACHIHIRO
IPC分类号： H01F7/06 , H01F7/16
摘要： PROBLEM TO BE SOLVED: To provide a stator, for a solenoid, which eliminates the problem of generation of burrs and chips, which is low-cost and whose effective magnetic-pole area is large. SOLUTION: A stator for a solenoid is constituted integrally in such a way that a side stator 2 and a bulk center stator 1 in which derivation holes 5 have been worked in advance and which are composed of a magnetic substance are manufactured separately and that the center 1 is built in the side stator 2. As a result, the problem of the generation of burrs and chips is eliminated, and the stator can be formed at low costs. In addition, when a winding is wound directly on the center stator 1 via a thin insulating film, a coil bobbin is eliminated. As a result, it is possible to provide the stator, for the solenoid, whose effective magnetic-pole area is wide.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式