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1. 发明专利

JP2003262201A ACCUMULATOR 审中-公开
公开(公告)号：JP2003262201A
公开(公告)日：2003-09-19
申请号：JP2002063114
申请日：2002-03-08
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI , SASAKI KENJI
IPC分类号： F15B1/08
摘要： PROBLEM TO BE SOLVED: To provide an accumulator 1 that can prevent effectively the occurrence of an abnormal sound by a pulse wave and the damage by an excessive compression of a bellows 6, and also simplify a structure or a form of a bellows cap 7. SOLUTION: In the accumulator 1 having a working member 5 with the bellows 6 and the bellows cap 7 installed in a housing 2 with a gas end cover 4 and an oil port 12, a chamber 19 for damping the pulse wave is provided on the bellows cap 7, and a height dimension H of a chamber 19 is set so as to stop the compression of the bellows 6 by bringing the chamber 19 into contact with the gas end cover 4 before the bellows 6 is excessively compressed. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2003156002A ACCUMULATOR 审中-公开
公开(公告)号：JP2003156002A
公开(公告)日：2003-05-30
申请号：JP2001355462
申请日：2001-11-21
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI , SASAKI KENJI , KIMURA RYUJI
IPC分类号： F15B1/08 , F16J15/10
摘要： PROBLEM TO BE SOLVED: To improve sealing property and to reduce load with a plurality of seal parts without increasing man-hours and a mounting space upon mounting a seal. SOLUTION: A seal member 30 disposed on the outer peripheral side of the inner end of a pressure hole C comprises an annular reinforcing plate 31 and an elastic body 32 molded with a rubber-like elastic material integrally with a reinforcing plate 31. The elastic body 32 has a plurality of seal lips 33 directing to a bellows 20 side and a plurality of second seal lips 34 adhered to the inner surface of an outer shell 10, and is fixed by a collar part 352 of a seal holder 35 forced into and engaged with a pressure port 12. When pressure in a pipe decreases to a low pressure not higher than a gas filling pressure, the plurality of seal lips 33 comes into closely contact with a bellows cap 22 of the bellows 20, thereby certainly shutting a pressure chamber A from the pressure hole C and keeping a uniform pressure state of the presence chamber A and a gas chamber B.

3. 发明专利

JP2003106301A FAULT DETECTING UNIT OF ACCUMULATOR 审中-公开
公开(公告)号：JP2003106301A
公开(公告)日：2003-04-09
申请号：JP2001299191
申请日：2001-09-28
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI , SASAKI KENJI
IPC分类号： F15B1/02
摘要： PROBLEM TO BE SOLVED: To provide a fault detecting unit of an accumulator 1 in a simple structure at a low cost. SOLUTION: When the accumulator 1 is normal, pressure difference ΔP at both sides of a throttling portion 42 arranged in a ventilation passage 4b of a upper air chamber 4a of an oil reservoir 4 is smaller than a threshold value ΔPth . When a bladder 102 of the accumulator 1 is broken, cushion gas G of a gas chamber 1B flows into the oil reservoir 4 via inside a hydraulically operated system, and is carried away to the open air from the upper air chamber 4a via the ventilation passage 4b. During the aforementioned process, pressure drop arises at the throttling portion 42 arranged on the ventilation passage 4b, and pressure PR at the oil reservoir 4 of the throttling portion 42 becomes higher than pressure PA at the open air side of the throttling portion 42. Consequently, it causes a situation of ΔP>ΔPth , which is judged as a fault, and an operating signal is outputted to an alarm unit 6.

4. 发明专利

JP2002276604A ACCUMULATOR 失效
公开(公告)号：JP2002276604A
公开(公告)日：2002-09-25
申请号：JP2001141028
申请日：2001-05-11
申请人： NOK CORP
发明人： YUDA AKIO , KITAHARA TOSHIAKI
IPC分类号： F15B1/08 , F15B1/10 , F15B1/22 , F15B1/24 , F16L55/04 , F16L55/053
摘要： PROBLEM TO BE SOLVED: To suppress vibration noises of an accumulator 1 having an oil pressure in the range of a filled gas pressure or lower and reduce the size of the accumulator. SOLUTION: The accumulator 1 comprises an operating member 5 including a bellows 6 arranged in a housing 2 for partitioning the housing 2 into a pressure filled chamber 8 and a pressure flow-in chamber 9 and a fluid inlet 15 provided in an end wall portion 3a of the housing 2 for introducing a pressure fluid from a system side to the pressure flow-in chamber 9. A chamber forming member 17 is fixed inside the housing 2 and a chamber 18 and a restriction 19 are provided between the chamber forming member 17 and the end wall portion 3a of the housing 2.

5. 发明专利

JP2002021801A ACCUMULATOR 失效
公开(公告)号：JP2002021801A
公开(公告)日：2002-01-23
申请号：JP2000202157
申请日：2000-07-04
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI
IPC分类号： F15B1/08
摘要： PROBLEM TO BE SOLVED: To provide an accumulator which can obtain an excellent absorbing effect relating to the pulsation of high frequency. SOLUTION: This accumulator is provided with an outer shell 1 connected to a main pipe to branch through a connecting port 2 and a film-state bladder 5 partitioning an internal space thereof to a leading chamber 3 in a side of the leading port 2 and a gas chamber 4 in an opposite side thereto, the leading port 2 comprises an external peripheral member 21 connected to the main pipe and an elastic unit 22 held to the internal periphery thereof, the main pipe and the leading chamber 3 are connected through a leading hole 22a opened in the elastic unit 22. A pulsation of low frequency and large amplitude is introduced to the leading chamber 3 with a flow of fluid in the leading hole 22a and effectively absorbed by displacement of the bladder 5 according to this pulsation, a pulsation of high frequency and fine amplitude is absorbed by repeated displacement of the elastic unit 22.

6. 发明专利

JPH07269501A ACCUMULATOR 失效
公开(公告)号：JPH07269501A
公开(公告)日：1995-10-17
申请号：JP8114894
申请日：1994-03-29
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI
IPC分类号： F15B1/08 , F15B1/22
摘要： PURPOSE:To eliminate a poppet from a bladder, impose no restrain to the opening cross sectional area of a fluid gateway, and effectively attenuate the fluid pulsation of high frequency waves. CONSTITUTION:A coil spring 6 which has a steel wire 6a wound roughly in a funnel shape, is disposed in the inner side of a fluid gateway 5 while being faced to a bladder 3, and thereby the bladder 3 is caught by the coil spring 6 when fluid is discharged, so that the bladder is prevented from being furthermore swelled out toward the fluid gateway side.

7. 发明专利

JPH04165105A ACCUMULATOR 失效
公开(公告)号：JPH04165105A
公开(公告)日：1992-06-10
申请号：JP29282390
申请日：1990-10-30
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI
IPC分类号： F15B1/24
摘要： PURPOSE:To perform a continuous change of an operation lower limit value at any time by magnetizing a magnetic substance arranged in a gas chamber or a piston against a magnet provided on the piston or the gas chamber by means of a coil provided on the outside portion of a container, and overlapping the suction force or the discharge force on the gas pressure. CONSTITUTION:A magnet 16 is provided on a piston 13 for partitioning the inside of a container 11 constituted by a cylindrical shell 11A and edge surface members 11B, 11C into a gas chamber 12A and a liquid chamber 12B. A magnetic substance 17 is fixed in the edge surface member 11C, and a coil 18 is provided on those peripheries and DC power supply is connected thereto. Thereby the suction force or the repulsive force of the magnet 16 or the magnetic substance 17 is exerted on the piston 13 to overlap this force on the gas pressure of the gas chamber 12A. Consequently, the gas pressure can be changed on request to change and regulate the operation lower limit value continuously at any time.

8. 发明专利

JP2003301801A Accumulator 审中-公开
标题翻译：累加器
公开(公告)号：JP2003301801A
公开(公告)日：2003-10-24
申请号：JP2002109972
申请日：2002-04-12
申请人： Nok Corp , Nok株式会社
发明人： KITAHARA TOSHIAKI , SASAKI KENJI , KUBONIWA HIROSHI
IPC分类号： F15B1/08
CPC分类号： F15B1/103 , F15B2201/205 , F15B2201/3153
摘要： PROBLEM TO BE SOLVED: To provide an accumulator 1 comprising a seal part 13 to seal pressure in a pressure chamber 10 between a bellows cap 8 and an oil port 5 for preventing the excessive reduction of pressure in the pressure chamber 10 in the accumulator 1 when pressure on the piping side to which the accumulator 1 is connected is reduced, in which a seal lip 14b of the seal part 13 is prevented from turning over by pressure. SOLUTION: The seal part 13 is formed of a cylindrical face seal provided with the seal lip 14b. The seal lip 14b is inclined toward the pressure chamber 10 to be pressed by closed fluid to tightly contact a mating member when pressure falls. A mating member slides toward the pressure chamber 10 relative to the seal lip 14b when pressure falls. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种包括密封部分13的蓄压器1，以密封波纹管盖8和油口5之间的压力室10中的压力，以防止压力室10中的压力过度降低蓄能器1当连接蓄能器1的管道侧的压力减小时，密封部13的密封唇部14b被压力转过。解决方案：密封部分13由设置有密封唇缘14b的圆柱形面密封件形成。密封唇14b朝向压力室10倾斜以被封闭的流体挤压以在压力下降时紧密接触配合构件。当压力下降时，配合构件相对于密封唇缘14b向压力室10滑动。版权所有（C）2004，JPO

9. 发明专利

JP2003156001A ACCUMULATOR 审中-公开
公开(公告)号：JP2003156001A
公开(公告)日：2003-05-30
申请号：JP2001354064
申请日：2001-11-20
申请人： NOK CORP
发明人： KITAHARA TOSHIAKI , SASAKI KENJI , KUBONIWA HIROSHI
IPC分类号： F15B1/08 , F16J15/10
摘要： PROBLEM TO BE SOLVED: To allow a seal lip 32 tightly adhered to a bellows cap 22 at a movable end of a bellows 20 to certainly prevent introduction of pressure in a pipe into a pressure chamber A, when the bellows 20 extends to a limit extending length by decrease of the pressure in the pipe introduced into the pressure chamber A. SOLUTION: The bellows gap 22 is disposed at the movable end of the bellows 20 separating inside the outer shell 10 the pressure lead-in chamber A and a gas chamber B. In the outer shell 10, a step surface 22b formed on the bellows cap 22 tightly adhered to the seal lip 32 prevents the seal lip 32 of a seal member 30 positioned on the outer periphery of the inner end of a pressure hole C from inverting to the inner peripheral side due to flow pressure of the fluid upon dropping of the pipe pressure and differential pressure between the pressure chamber A and the pressure hole C. A self sealing function of the seal lip 32 certainly shuts between the pressure chamber A and the pressure hole C.

10. 发明专利

JP2003074503A Accumulator 审中-公开
标题翻译：累加器
公开(公告)号：JP2003074503A
公开(公告)日：2003-03-12
申请号：JP2001267286
申请日：2001-09-04
申请人： Nok Corp , エヌオーケー株式会社
发明人： KITAHARA TOSHIAKI , SASAKI KENJI
IPC分类号： F15B1/08
CPC分类号： F15B1/103 , F15B2201/205 , F15B2201/3153
摘要： PROBLEM TO BE SOLVED: To provide an accumulator having a relatively simple seal structure and capable of improving quality reliability of a seal in the accumulator having a function to seal pressure within the accumulator between a bellows cap and an oil port while decreasing the pressure.
SOLUTION: A packing 15 is fixed on the oil port 5 by means of a seal holder 14 as a structure, and the packing 15, which keeps in contact with the bellows cap 8 while decreasing the pressure and seals pressure inside the accumulator 1, is arranged inside the oil port 5 in the accumulator 1. The seal holder 14 is fixed on the oil port 5, and the packing 15 is retained in a non-contact state by means of the seal holder 14 in the structure.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供具有相对简单的密封结构并且能够提高蓄能器中的密封件的质量可靠性的蓄能器，其具有在减小压力的同时在波纹管盖和油口之间密封蓄能器内的压力的功能。解决方案：通过作为结构的密封保持器14将填料15固定在油口5上，并且在降低压力并密封蓄压器1内的压力的同时与波纹管盖8保持接触的密封件15是设置在储油器1内的油口5的内部。密封保持器14固定在油口5上，密封件15通过结构中的密封保持器14保持在非接触状态。

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