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1. 发明专利

JPH1111336A MOTOR-DRIVEN POWER STEERING DEVICE 失效
公开(公告)号：JPH1111336A
公开(公告)日：1999-01-19
申请号：JP18462197
申请日：1997-06-26
申请人： UNISIA JECS CORP
发明人： SHIRAI TAKAYUKI , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIOYAMA SHUICHIRO
IPC分类号： B62D3/12 , B62D5/04
摘要： PROBLEM TO BE SOLVED: To provide a motor-driven power steering device facilitating work also eliminating generation of pressure change in the inside of a motor housing, casing, gear housing, and the like. SOLUTION: This device is provided with a rotary shaft inputting steering force, rack shaft connected to this rotary shaft, electric motor driven to rotate in accordance with steering force input to the rotary shaft, and a reduction gear transmitting an output of this electric motor to the rotary shaft. Further the device is provided with a gear housing internally mounting the rotary shaft 1 and the rack shaft, and a casing 24 internally mounting the reduction gear also to be connected to the gear housing and a motor housing 25 of the electric motor with the inside thereof communicating with inside the gear housing and inside the motor housing 25. In a casing, an atmospheric opening hole 28 penetrating to the inside/outside is provided, in this atmospheric opening hole 28, a water repellant filter 32 is attached.

2. 发明专利

JP2002274400A CONTROL VALVE FOR POWER STEERING DEVICE 失效
公开(公告)号：JP2002274400A
公开(公告)日：2002-09-25
申请号：JP2001075369
申请日：2001-03-16
申请人： UNISIA JECS CORP
发明人： KAMIMURA SEIJI , SHIRAI TAKAYUKI
IPC分类号： B62D5/083 , B62D5/07 , B62D5/22
摘要： PROBLEM TO BE SOLVED: To increase the freedom degree of oil path formation on a rotor by forming a bearing groove and a ring groove in the outer peripheral surface of the rotor without occupying a large space in the axial direction. SOLUTION: In a control valve for the power steering device, oil paths 19a and 19b formed between the rotor 9 and a sleeve 10 are adjustably operated according to the rotating position of the rotor relative to the sleeve 10 following the torsion of a torsion bar 7 to hydraulically control a power cylinder 2 for steering assistance. The bearing groove 22 and ring groove 23 are continuously formed in the outer peripheral surface of the rotor 9 in the axial direction. A needle bearing 21 for rotatably supporting the rotor 9 on the sleeve 10 is stored in the bearing groove 22, and a friction ring 24 for converging the relative vibration of the rotor 9 to the sleeve 10 is stored in the ring groove 23. Since there is no partition space between the bearing groove 22 and the ring groove 23, the occupied space of the rotor 9 in the axial direction can be reduced.

3. 发明专利

JPH11301499A POWER STEERING SYSTEM 失效
公开(公告)号：JPH11301499A
公开(公告)日：1999-11-02
申请号：JP12530898
申请日：1998-04-20
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIRAI TAKAYUKI
IPC分类号： B62D5/04
摘要： PROBLEM TO BE SOLVED: To prevent any foreign matter from intruding into a reduction gear case and improve reliability and durability by providing a seal device on the opening side of the reduction gear case. SOLUTION: A reduction gear 14 is adhered into a reduction gear case 3 of a housing 1 and an electric motor 13 is mounted on the opening 3C side. A unit case 25 of the reduction gear 14 is constituted with a guide ring 16 of a reduction mechanism 15, a holder 26 on the input side, and a holder 28 on the output side. In the reduction gear case 3, a seal device 34 is positioned on the opening 3C side than the reduction gear 14, and this seal device 34 is constituted with a seal plate 35, and O-rings 37, 38.

4. 发明专利

JPH11301502A POWER STEERING DEVICE 失效
公开(公告)号：JPH11301502A
公开(公告)日：1999-11-02
申请号：JP12530598
申请日：1998-04-20
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIRAI TAKAYUKI
IPC分类号： B62D5/04 , B62D5/18
摘要： PROBLEM TO BE SOLVED: To adjust the engagement position of a driving gear and driven gear in the axial direction using two shim plates and improve the efficiency of the device assembly work and the backlash adjustment work. SOLUTION: A steering shaft 6 having a driven gear 18 is rotatably provided in a shaft installation cylinder 2 of a housing 1. A reduction gear 14 having a driving gear 17 is provided with a electric motor 13 on a reduction gear case 3 side. Then, rotation of the electric motor 13 is transmitted from the driving gear 17 to the driven gear 18 via the reduction gear 14, reducing the steering force necessary from the driver with respect to the steering shaft 6. Also, a first shim plate 19 is provided between the steering shaft 6 and the driven gear 18 and a second shim plate 20 is provided between a large diameter bearing 7 and the shaft installation cylinder 2. As a result, the engagement position of the driven gear 18 with respect to the driving gear 17 is adjusted in the axial direction using the shim plates 19, 20.

5. 发明专利

JPH11301495A POWER STEERING SYSTEM, AND ASSEMBLING METHOD FOR IT 失效
公开(公告)号：JPH11301495A
公开(公告)日：1999-11-02
申请号：JP12530398
申请日：1998-04-20
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIRAI TAKAYUKI
IPC分类号： B62D5/04
摘要： PROBLEM TO BE SOLVED: To improve operability in assembling and prevent a foreign matter from intruding into a reduction gear by assembling the reduction gear in a housing as a single unit. SOLUTION: A reduction gear 21 is previously sub-assembled into a single unit, and this sub-assembled reduction gear 21 is inserted into a reduction gear case 3 of a housing 1. Then, an opening 3D of the reduction gear case 3 is blocked by a motor easing 17 of an electric motor 16. Combination of each components of the reduction gear 21 into the reduction gear case 3 does not require divided plural processes as a prior art, contamination management for each process can be eliminated, and operability in assembling can be improved.

6. 发明专利

JP2002284026A POWER CYLINDER OF POWER STEERING DEVICE 失效
公开(公告)号：JP2002284026A
公开(公告)日：2002-10-03
申请号：JP2001089626
申请日：2001-03-27
申请人： UNISIA JECS CORP
发明人： KAMIMURA SEIJI , SHIRAI TAKAYUKI
IPC分类号： B62D5/10 , B62D5/22 , F16C35/02
摘要： PROBLEM TO BE SOLVED: To improve bearing precision of a bearing bush by reducing the deformation of a barrel part when mounting the bearing bush as much as possible. SOLUTION: An annular flange 17 protruding to the outside in the radial direction is provided at outer periphery on one end side of the cylindrical barrel part 16 of the bearing bush 14, and an annular recessed part 19 with which the annular flange 17 is engaged is provided in the vicinity of an end part on the side where the bearing bush 14 is inserted in a bush fitting part of a sealing plug 12. When mounting the bearing bush 14, the other end part of the barrel part 16 of the bearing bush 14 is inserted into a rod fitting and insertion hole 13 of the sealing plug 12, and the annular flange 17 is deformed at the end of insertion stroke of the bush 14 and is engaged with the annular recessed part 19 of the sealing plug 12 when the bush 14 is pushed into the rod fitting and insertion hole 13 as it is. Consequently, the deformation of the barrel part 16 in accordance with the deformation of the annular flange 17 is performed at the end only of insertion stroke of the bush 14.

7. 发明专利

JP2002274396A RACK AND PINION STEERING DEVICE 失效
公开(公告)号：JP2002274396A
公开(公告)日：2002-09-25
申请号：JP2001075370
申请日：2001-03-16
申请人： UNISIA JECS CORP
发明人： KAMIMURA SEIJI , SHIRAI TAKAYUKI
IPC分类号： B62D3/12
摘要： PROBLEM TO BE SOLVED: To press a rack in the direction of a meshed part with a pinion and prevent a member from being interfered with rack teeth without inducing complication and upsizing of a device. SOLUTION: A generally annular elastic member 12 having a pressing projection 13 swelling to an inner surface side is fixedly press-fitted to the inner surface of a cylindrical rack housing 7 so that the pressing projection 13 is allowed to abut on the rear surface side of a rack tooth forming part on the rack 3. Since the elastic member 12 is a simple unit part, a device structure can be simplified. Since the elastic member 12 is installed on the inner surface of the cylindrical rack housing 7, the diameter of the rack housing 7 can be reduced. Since the pressing projection 13 of the elastic member 12 is not disposed on the rack tooth 8 side, the interference of the rack teeth 8 with the elastic member 12 can be eliminated.

8. 发明专利

JPH11301497A POWER STEERING SYSTEM 失效
公开(公告)号：JPH11301497A
公开(公告)日：1999-11-02
申请号：JP12530698
申请日：1998-04-20
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIRAI TAKAYUKI
IPC分类号： B62D5/04
摘要： PROBLEM TO BE SOLVED: To smoothen combining work of a reduction gear into a housing and improve operability in assembling. SOLUTION: Before sequential combination of each component of a reduction gear 21 into a reduction gear case 3, and assembling the reduction gear 21 in the reduction gear case 3, a positioning pin 39 is provided in a holder 35 on the output side first combined into the reduction gear case 3. In the step that this holder 35 is adhered to the depth side of the reduction gear case 3 together with a gear shaft 31, the top side of the positioning pin 39 is engaged into a positioning hole 3F of the reduction gear case 3. In the state that the holder 35 and a shim plate are temporarily fixed to the depth side of the reduction gear case 3, other each component is sequentially inserted into the reduction gear case 3, and fastening work of a fastening bolt 41 into a screw hole of the reduction gear case 3 can be smoothly performed.

9. 发明专利

JPH07239004A POWER TRANSMISSION DEVICE 失效
公开(公告)号：JPH07239004A
公开(公告)日：1995-09-12
申请号：JP2988394
申请日：1994-02-28
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , TAKESHITA TOSHIMI , SHIRAI TAKAYUKI
IPC分类号： F16H1/28 , F16H15/50
摘要： PURPOSE:To provide a power transmission device capable of obtaining a large speed reduction ratio easily while whole structure is being simplified. CONSTITUTION:An upper stage input rotating body 1A and a lower stage input rotating body 1B are installed integrally at the top end of an input shaft 1. Multiple upper stage intermediate rotating bodies 4 which are separated from each other in circumferential direction and can make self-rotation only are installed engagedly with the upper stage input rotating body 1A. Also multiple lower stage intermediate rotating bodies 5 which are separated from each other in circumferential direction and can make self-rotation and revolution are installed engagedly with the lower stage input rotating body 1B. Then a cylindrical member 6 is so installed that its internal surface is engaged with the intermediate rotating bodies 4 and 5, and can be self-rotated. By this, a speed reduction ratio is determined by the difference between the pitch diameter (a) of the upper stage input rotating body 1A and the pitch diameter (c) of the lower stage input rotating body 1B. Thus a large speed reduction ratio can be obtained easily.

10. 发明专利

JPH11301498A POWER STEERING SYSTEM 失效
公开(公告)号：JPH11301498A
公开(公告)日：1999-11-02
申请号：JP12530798
申请日：1998-04-20
申请人： UNISIA JECS CORP
发明人： SHIOYAMA SHUICHIRO , SHIMIZU HIDEAKI , MORIYA KATSUYUKI , SHIRAI TAKAYUKI
IPC分类号： B62D5/04
摘要： PROBLEM TO BE SOLVED: To smoothen combining work of a steering shaft and improve operability in assembling, and to keep good engagement of a pinion with a rack, and prevent rapid variation of steering feeling even if a bearing fails. SOLUTION: A steering shaft 8 is rotatably supported in a shaft mounting cylinder 2 by an upper bearing 11 and a lower bearing 12. An auxiliary bearing 6 surrounding a shaft part 8C of a steering shaft 8 with micro clearance is formed on a lid element 5 for covering an opening 2A of the shaft mounting cylinder 2. When any rattle occurs at the upper bearing 11 or the lower bearing 12, the shaft part 8C of the steering shaft 8 slidingly abuts to a support surface 6A of the auxiliary bearing 6 to compensate rotation of the steering shaft 8.

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