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1. 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.

2. 发明专利

JPH1122701A GAS PLUG FOR PRESSURE VESSEL AND GAS FEEDING DEVICE FOR GAS PLUG 失效
公开(公告)号：JPH1122701A
公开(公告)日：1999-01-26
申请号：JP18013897
申请日：1997-07-04
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/02 , F15B1/08
摘要： PROBLEM TO BE SOLVED: To perform the feed of pressure gas by a gas feeding device of simple structure by simplifying the structure of the gas plug of a pressure vessel and preventing the occurrence of damage. SOLUTION: A passage 18 is arranged between threaded engagement of the mounting screw hole 12 of a shell 2 and the engagement screw 15 of a gas plug 10, and the passage 18 is sealed with pressure gas in a gas chamber by a seal ring 20. Further, the gas plug 10 is opened in a state to seal a recessed part with the gas plug 10 by a rotating tool coupled to the lock part 23 of the gas plug 10, and pressure gas is feedable to a gas chamber.

3. 发明专利

JP2002021802A ACCUMULATOR 失效
公开(公告)号：JP2002021802A
公开(公告)日：2002-01-23
申请号：JP2000206394
申请日：2000-07-07
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/08
摘要： PROBLEM TO BE SOLVED: To provide an accumulator which can prevent coming off of an external peripheral edge part of a bladder from between a holder and the internal surface of a shell so that seal performance by the external peripheral edge part of the bladder can be improved, in the accumulator having the shell, a holder fixed to the internal surface of the shell, and the bladder erected in the inside of the shell, to be constituted by interposing the external peripheral edge part of the bladder between the holder and the internal surface of the shell. SOLUTION: A spacer 17 preventing coming off of an external peripheral edge part 4a of a bladder 4 from between a holder 3 and the internal surface of a shell 2 by action of a pressure is provided in the internal surface of the shell 2.

4. 发明专利

JPH08240203A ACCUMULATOR COVER AND ITS FORMING DIE 失效
公开(公告)号：JPH08240203A
公开(公告)日：1996-09-17
申请号：JP4432095
申请日：1995-03-03
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/08
摘要： PURPOSE: To double the strength of a cover by providing an expanding portion on the core portion side of a connecting section between a joint portion and a core portion and longitudinally disposing long fibers along the axial direction on the root side of the joint portion. CONSTITUTION: A shell 2 of an accumulator comprises a bottomed cylindrical main shell body 2a made of metal plate and an umbrella-shaped cover 2b made of resin with glass fibers and is partitioned into a liquid room 20 and a gas room 21 by a bladder 3. A cylindrical core portion 7 having a passageway 6 in its center is formed in the cover 2b and, for example, eight supporting ribs 10 are formed on the inner periphery of the core portion 7. A connecting section 11 is integrally molded on four supporting ribs of eight supporting ribs so as to form a space 18 outside and is connected to the other four supporting ribs by an expanding portion 12, wherein the glass fibers disposed in the core portion 7 and the joint portion 9 and the like which exist in the cover 25 are well oriented in the axial direction owing to the existence of the expanding portion 12.

5. 发明专利

JPH04191154A WET WIPER VALVE 失效
公开(公告)号：JPH04191154A
公开(公告)日：1992-07-09
申请号：JP32400590
申请日：1990-11-27
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： B60S1/48 , B05B1/16 , B05B1/30
摘要： PURPOSE:To make the work in the assembly and in the replacement easier by assembling a valve member, a rotary member, and a lid member in order, providing a locking member as a shaft, and assembling them integrally. CONSTITUTION:A valve member 37, a rotary member 4, and a lid member 6 are assembled immovable in the axial direction, and furthermore, an interlock mechanism including a recess 19, a spring 20, a steel ball 21 and a recess 25 is provided. And an interlock preventive mechanism including an erecting piece 11 and a groove 14 is provided between the valve member 37 and the rotary member 4, and when the lid member 6 is rotated integrally at the time of rotation of a wiper by a shaft 2, the rotary member 4 is also rotated integrally by the interlock mechanism (19 to 21 and 25), when, only a nozzle 5a at the front side in the rotation direction is communicated to a flow way 8 at a base (pivot holder) 3, the interlock preventive mechanism (11 and 14) is operated in front of the finishing end of the rotation scope so as to open only a nozzle 5b at the rear side in the rotation direction. As a result, parts can be removed in order only by releasing the locking of rings in the replacement work, and the replacement work can be carried out very easily.

6. 发明专利

JPH08334101A ACCUMULATOR 失效
公开(公告)号：JPH08334101A
公开(公告)日：1996-12-17
申请号：JP14060095
申请日：1995-06-07
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/08
摘要： PURPOSE: To provide durability of a bladder without causing abnormal deformation even when abrupt fluid pressure is applied thereto by forming a thick portion whose thickness is gradually increased from a flexible part to a center on a bladder. CONSTITUTION: A bladder 2 is formed on a thick portion 4 whose thickness of a bottom is increased gradually from a flexible part 3 to a center. A natural form of the thick portion 4 is inverted to the side of an installation part 5 in a bent form. The inverted thick portion 4 is formed as indicated by the drawing at the time of formation. It is, while being elastically deformed, press- fitted to an inner peripheral surface of a shell 8 by a fluid pressure. When fluid is applied thereto from a fluid port, a free form as an original makes the thick portion 4 be semi-spherically inverted in an applying direction of the fluid. The thick portion is so formed that its thickness is increased from a thin flexible part to the center. Even when the fluid pressure is applied in a pulsative motion, it is deformed normally as in an original form. The bladder 2 is prevented from abutting against the inner peripheral surface of the shell 2 and abrading.

7. 发明专利

JPH04254237A WET WIPER VALVE 失效
公开(公告)号：JPH04254237A
公开(公告)日：1992-09-09
申请号：JP3567091
申请日：1991-02-04
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： B05B1/16 , B05B1/30 , B60S1/48
摘要： PURPOSE:To minimize and simplify the constitution of a wet wiper valve and to improve, the reliability by opening and closing a hole communicated with a nozzle by a reed valve, and combining a cam plate with a switching plate which form a rotary member in the horizontal direction in a system where water or the like is jetted, interlocking with a wiper. CONSTITUTION:A wet wiper valve 1 is constructed so that when a shaft 2 is reciproated to turn, a wiper blade provided on the upper end portion and a cover member 6 having an engaging portion 6b are respectively turned in a body. At this time, a rotary member 4 comprising a cam plate 17 pressed by a reed valve 25 and a switching plate 14 is also turned in a body therewith. Accordingly, when the wiper blade is located in the starting end of a rotation range, water is jetted first from a nozzle 5a positioned forward in the turning direction. Subsequently, when it approaches the terminal end of the rotation range, a projecting portion 18a of the cam plate 14 is separated from one end portion of the reed valve 25. Thus, one end portion of the reed valve 25 blocks up a hole 23a, and the other end portion opens a hole 23b to jet water from another nozzle.

8. 发明专利

JPH04146856A WET WIPER VALVE 失效
公开(公告)号：JPH04146856A
公开(公告)日：1992-05-20
申请号：JP26782190
申请日：1990-10-05
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： B60S1/46 , B60S1/52 , F16K11/052
摘要： PURPOSE:To certainly carry out wiping of jetted water by jetting water from a nozzle on the front side in the turning direction at the time when a wiper turns, and by jetting water from another nozzle by changing the former' nozzle to the latter nozzle before the end edge of turning. CONSTITUTION:When a lid member 6 turns with a wiper blade by a shaft 2, a turning member 4 is turned slavishly, and a flow passage 8 provided on a base part 3 is communicated through only to a nozzle 5a on the front side in the turning direction through a space 34 formed between a lower plate 31 and the turning member 4, a circular arc groove 14 provided on the turning member 4 and others, and water is jetted from this nozzle 5a only. Thereafter, when a standing piece 11 of the base part 3 makes contact with the edge part of the groove 14, interlocking of the lid member 6 and the turning member 4 is blocked and only the lid member 6 moves, the nozzle 5a opened by a valve 17 is choked and a nozzle 5b on the rear side in the turning direction is separated from the front surface of the valve 17, only the nozzle 5b is released and water is jetted only from this nozzle 5b.

9. 发明专利

JPH11344001A POPPET 失效
公开(公告)号：JPH11344001A
公开(公告)日：1999-12-14
申请号：JP15248398
申请日：1998-06-02
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/08
摘要： PROBLEM TO BE SOLVED: To prevent a bladder made of a flexible material from being damaged and secure required strength by bending an outer peripheral edge part round by press molding, in a poppet provided with the outer peripheral edge part. SOLUTION: Because an outer peripheral edge part 11d of a plane part 11c is bent round so as to be roughly U-shaped in cross section by press molding, stress concentration is not generated and a bladder 4 is not damaged because an edge like one in a conventional way does not exist, even if a lower surface of the bladder 4 is repeatingly strongly pressed on this outer peripheral edge part 11d. Therefore, damage of the bladder 4 is prevented and the durability can be improved. Because the outer peripheral edge part 11d of the plane part 11c is made to have a double structure by bending, required strength can be sufficiently secured, even if a poppet 11 is molded by a metallic plate which is thinner than a conventional one. Therefore, durability of the poppet 11 can be improved and products which are advantageous for parts cost can be provided.

10. 发明专利

JPH09303303A ACCUMULATOR 失效
公开(公告)号：JPH09303303A
公开(公告)日：1997-11-25
申请号：JP12041396
申请日：1996-05-15
申请人： NOK CORP
发明人： YUDA AKIO
IPC分类号： F15B1/08
摘要： PROBLEM TO BE SOLVED: To prevent the generation of abrasion with the friction even in the case where a bladder contacts a fitting tool so as to be slid, and to prevent a bladder from being damaged in an accumulator by providing a sliding material in a surface of a fitting tool for holding a fitting part of a bladder, which contacts with the bladder. SOLUTION: When the pressure operating liquid works to a liquid chamber 17, a bladder 2, which receives this pressure, compresses a gas chamber 16, and the liquid chamber 17 is moved to the gas chamber 16 side. At this stage, a fitting part 5 side of the bladder 2 is joined with the fitting tool 6 with friction. At the same time, the maximum stress is applied to the fitting part 5 side, the fitting part 5 side is extended. Furthermore, the gas of the gas chamber 16 tries to pass through the fitting part 5 side. These cooperative work is applied to a part near the fitting part 5, and a previous contact, which causes damage in an early time, is generated in the part near the fitting part 5. But, a slide material 18 having a small coefficient of friction is interposed in a surface of the fitting tool 6 to be joined with the bladder 2, and friction of the bladder 2 is reduced, and extension of this part is prevented, and damage to a part near the fitting part 5 of the bladder 2 is effectively prevented.

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