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1. 发明专利

JP2002327607A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002327607A
公开(公告)日：2002-11-15
申请号：JP2001131246
申请日：2001-04-27
申请人： UNISIA JECS CORP
发明人： UCHIDA KATSUHIKO
IPC分类号： F01L1/34
摘要： PROBLEM TO BE SOLVED: To solve the problem of a current valve timing control device with the structure that a lock pin is inserted into an engagement hole for connection so that it is necessary to accurately work and assemble each structural member and the cost is raised. SOLUTION: The oil pressure is selectively supplied/discharged to/from a spark-advance side oil pressure chamber 2 and a spark-lag side oil pressure chamber 30 of a housing main body 6a to normally/reversely rotate a turning member 3, and a relative rotational phase of a timing sprocket and a can shaft 2 is thereby converted. A lock mechanism 5 for locking the rotation phase of the housing and the turning member when starting the engine has a pair of pinching pins 42 and 43 provided in a pair of housing holes 44 and 45, which are formed in a vane 23a of the turning member to pass through it, freely to appear and disappear in opposite directions. In the condition that the pinching pins are inserted into arc-like engagement grooves 40 and 41, the vane is pinched from the circumferential direction to regulate the turning member and the housing at the predetermined spark-advance side rotational phase position.

2. 发明专利

JPH09222004A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09222004A
公开(公告)日：1997-08-26
申请号：JP2879996
申请日：1996-02-16
申请人： UNISIA JECS CORP
发明人： FUKUDA YOSHIO , KAWAKAMI HIROAKI , UCHIDA KATSUHIKO , NAGURA NAOTAKA , TSUKADA TOMOYA , KOBAYASHI TOMOICHI
IPC分类号： F01L1/02 , F01L1/34
摘要： PROBLEM TO BE SOLVED: To improve the efficiency of a manufacturing work and that of an assembly work as lowering of the strength and rigidity of a cylinder head and a cam shaft is prevented from occurring. SOLUTION: A cylindrical gear 14 engaged between the cylindrical body 1a of a sprocket 1 and the sleeve 3 of a cam shaft 2 is moved in the axial direction of a cam shaft by a relative pressure between the oil pressure of a hydraulic circuit 19 and the spring force of a compression spring 20 to convert a relative rotation phase between the two members 1 and 2, and this conversion causes variation of the opening and closing timing of a suction valve. The feed passage 24, the valve hole 25, the feed and discharge passage 27, and the drain passage 28 of the hydraulic circuit 19 are formed in an oil passage constitution body 32 individually independently from the sprocket 1 and the cam shaft 2 and the front end part of the sprocket 1 is rotatably supported by the upper end part 32b of the oil passage constituting body 32.

3. 发明专利

JPH0868305A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0868305A
公开(公告)日：1996-03-12
申请号：JP20470394
申请日：1994-08-30
申请人： UNISIA JECS CORP
发明人： SUGA SEIJI , IMAI HIROAKI , UCHIDA KATSUHIKO
IPC分类号： F01L1/34 , F01L1/344
摘要： PURPOSE: To improve control responsiveness of a valve timing by further improving movement responsiveness of a cylindrical gear which is moved axially through a piston. CONSTITUTION: In a cylindrical gear 8, a sproket 1 is meshed with a sleeve 4 through a helical internal/external teeth. The cylindrical gear 8 is moved by relative pressure between hydraulic pressure in a pressure receiving chamber 14 and spring force of a return spring 23, through a piston 13, so that relative rotational phase of the sproket 1 and a cam shaft 2 is converted. A clearance is formed between a support pin 16 fixed to the piston 13 and a pin hole 10c of a rear gear structural part 10 to which a shaft 16b of the support pin 16 is slid, for eliminating dislocation of axes of the support pin 16 and the pin hole 10c.

4. 发明专利

JP2002227622A VALVE TIMING CONTROLLING DEVICE OF INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2002227622A
公开(公告)日：2002-08-14
申请号：JP2001257302
申请日：2001-08-28
申请人： UNISIA JECS CORP
发明人： SAITO MASAHARU , NAKAMURA HIDEAKI , UCHIDA KATSUHIKO
IPC分类号： F01L1/46 , F01L1/34 , F01L1/344 , F02D35/00 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To reduce the manufacturing cost by easily forming a target plate. SOLUTION: In a device changing the rotation phase of a crankshaft and a camshaft 10 by arranging a vane rotor 16 connected with a can shaft 13 in a housing 14 formed with a chain sprocket 13 and revolving control of the vane rotor 16 for a housing 14 with the oil pressure, a projection shaft 28 projecting forwards penetrating the housing 14 is formed at the vane rotor 16. A target plate 55 to be a detected object of a rotational position with a sensor 59 is formed in a plate shape, and the target plate 55 is installed by pressing the target plate 55 in the projected shaft. The target plate can be easily formed by press forming without drawing.

5. 发明专利

JPH09125918A VALVE TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE AND ITS MANUFACTURE 失效
公开(公告)号：JPH09125918A
公开(公告)日：1997-05-13
申请号：JP28326195
申请日：1995-10-31
申请人： UNISIA JECS CORP
发明人： IMAI HIROAKI , TSUKADA TOMOYA , UCHIDA KATSUHIKO , TSURUTA SEIJI
IPC分类号： F01L1/34
摘要： PROBLEM TO BE SOLVED: To reduce the number of manufacturing processes for a cylindrical gear provided for controlling the timing of opening of an intake/exhaust valve so that it is advanced or delayed. SOLUTION: In a front cylindrical gear 20 which is divided into two of front and rear gear component parts 22, 23, connecting-pin through holes 30 through which even-numbered connecting pins 8 are passed from the same or both directions and support-pin through holes through which odd-numbered support pins 9 are passed are bored in such a way that they can be machined simultaneously, so the need for machining the support pin through holes in the rear gear component part 23 after dividing the gear 20 into the front and rear gear component parts 22, 23 as in conventional cases is eliminated, resulting in reduced number of machining processes.

6. 发明专利

JPH0650112A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0650112A
公开(公告)日：1994-02-22
申请号：JP20332192
申请日：1992-07-30
申请人： UNISIA JECS CORP
发明人： IMAI HIROAKI , HIDAKA AKIRA , UCHIDA KATSUHIKO
IPC分类号： F01L1/34
摘要： PURPOSE:To attain downsizing of a device and cost reduction while securing three-step control of valve timing in a valve timing control device for variably controlling opening/closing timing of an inlet/exhaust valve of an internal combustion engine in accordance with an operation state. CONSTITUTION:In this valve timing control device, a cylindrical gear 27 interposed between a driven sprocket 21 and a camshaft 22 is moved in the axial direction via a movable member 30 so as to convert a relative turning phase between both the members 21, 22 into three-steps. On the way of a first and a second oil pressure circuits 31, 32 for feeding/discharging oil pressure to/from a first pressure receiving chamber 29a and a second pressure receiving chamber 29b of a pressure chamber 29 defined by the movable member 30, a three- position type rotary valve mechanism 38 is installed.

7. 发明专利

JP2002276313A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JP2002276313A
公开(公告)日：2002-09-25
申请号：JP2001073240
申请日：2001-03-15
申请人： UNISIA JECS CORP
发明人： UCHIDA KATSUHIKO , WATANABE KOTARO
IPC分类号： F01L1/34 , F02D13/02
摘要： PROBLEM TO BE SOLVED: To prevent effect of leakage of operating oil on valve timing change operation and lowering of operational response, even if the leakage of operating oil occurs. SOLUTION: A front end portion of a camshaft 31 of hollow structure is fitted and fixed in a recess portion 50 of a vane member 37, and a tube 53 is fitted and fixed inside the camshaft. A first feed/discharge passage a1 connecting an inner space of the tube 53 with an advance hydraulic chamber is disposed, and a second feed/discharge passage a2 passing through an outer peripheral face of the camshaft 31 from an outer space of the tube 53 and passing through an annular groove 61 to a delay hydraulic chamber is disposed. A positioning pin is hit into the outer peripheral face of the camshaft 31 through an engaging hole 64 of the vane member 37 to position the vane member and the camshaft. When high pressure operating oil is supplied to the second feed/ discharge passage a2 at a time of delay side control and the operating oil leaks from the annular groove 61 to the engaging hole 64, a large torque component on a delay side of alternate torque acts as assist force.

8. 发明专利

JP2002235511A VALVE TIMING CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE, AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002235511A
公开(公告)日：2002-08-23
申请号：JP2001034833
申请日：2001-02-13
申请人： UNISIA JECS CORP
发明人： UCHIDA KATSUHIKO , WATANABE KOTARO
IPC分类号： F01L1/34
摘要： PROBLEM TO BE SOLVED: To improve assembling workability and operation responsiveness by easily and accurately guiding the tip of a cam bolt to a normal screwing position of a camshaft in assembling. SOLUTION: The cam bolt through hole 28 of a vane member 16 is provided with a positioning means for positioning a radial position of the cam bolt 31. The positioning means is constituted with, for example, a guide block 44 comprising a plurality of block pieces 44a divided and formed along the inner peripheral surface of the cam bolt through hole 28. In assembling the vane member 16, the cam bolt 31, while being positioned by the positioning means, can easily and accurately be screwed into the normal screwing position of the camshaft. The guide block 44 is integrally molded simultaneously in molding a die of the vane member 16.

9. 发明专利

JPH0726914A VALVE TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0726914A
公开(公告)日：1995-01-27
申请号：JP16874993
申请日：1993-07-08
申请人： UNISIA JECS CORP
发明人： UCHIDA KATSUHIKO
IPC分类号： F01L1/34 , F02D13/02
摘要： PURPOSE:To enhance the moving responsiveness of a cylindrical gear from a foremost position to an intermediate position by restraining the contact pressure between two gear mechanism parts from increasing. CONSTITUTION:A cylindrical gear 28 meshed between a timing pulley 21 and a cam shaft 22 is controlled so as to be moved axially in three stages by means of a moving member 34. Further, during shifting from an engine idling operation to a low speed range, a controller 54 controls solenoid valves 50, 51 so as to feed hydraulic pressure into a first pressure receiving chamber 35, and simultaneously, hydraulic pressure is temporarily fed into a second pressure receiving chamber 36. Accordingly, both front and rear gear mechanism parts 29, 30 are simultaneously moved to an intermediate position under one and the same pressure.

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