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1. 发明专利

JP2006007837A Electric power steering device 有权
标题翻译：电动转向装置
公开(公告)号：JP2006007837A
公开(公告)日：2006-01-12
申请号：JP2004184213
申请日：2004-06-22
申请人： Favess Co Ltd , Koyo Seiko Co Ltd , Nissei Corp , Toyoda Mach Works Ltd , 光洋精工株式会社 , 株式会社ニッセイ , 株式会社ファーベス , 豊田工機株式会社
发明人： MIZUHARA MASATO , OSUGA AKIRO , ISHIHARA SHIGEO , HAYASHI HISAMITSU
IPC分类号： B62D5/04 , F16H1/14 , F16H55/08 , F16H55/17
CPC分类号： B62D5/0421 , F16H55/0886 , Y10T74/19958
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device which can secure an appropriate tooth contact between conical gear wheels engaged with each other and thus reduce noise. SOLUTION: A center BO of the engagement area B of the teeth surface 43 of the gear teeth 40 of a first bevel gear 21 in the width direction X1 of the gear teeth is offset closer to the small end 41 side than the center C1 of the whole teeth surface 43 in the width direction X1 of the gear teeth with a predetermined offset amount e1 at the time of no load. It is desirable that the offset amount e1 should be 10 to 30% of the amount of the gear teeth width W1 of the gear teeth 40. Then the center BO of the engagement area can be matched with the center C1 of the width of the gear teeth under load. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电动助力转向装置，其能够确保彼此接合的锥形齿轮之间的适当的齿接触，从而降低噪音。解决方案：齿轮齿宽度方向X1上的第一锥齿轮21的齿轮齿40的齿面43的接合区域B的中心BO偏离比中心的小端41侧更近在齿轮齿的宽度方向X1上的全齿表面43的C1处于空载时具有预定的偏移量e1。期望偏移量e1应为齿轮齿40的齿轮齿宽W1的量的10〜30％。然后，接合区域的中心BO可以与齿轮宽度的中心C1相匹配负载下的牙齿版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2005162115A Electric power steering device 有权
标题翻译：电动转向装置
公开(公告)号：JP2005162115A
公开(公告)日：2005-06-23
申请号：JP2003406423
申请日：2003-12-04
申请人： Favess Co Ltd , Koyo Seiko Co Ltd , Toyoda Mach Works Ltd , 光洋精工株式会社 , 株式会社ファーベス , 豊田工機株式会社
发明人： MIZUHARA MASATO , OSUGA AKIRO , NAKAMURA KENSAKU
IPC分类号： B62D5/04 , F16H1/14
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering device capable of performing a high precision measurement of a back-lash between a small gear and a large gear of a deceleration mechanism after the deceleration mechanism is assembled in a housing. SOLUTION: A jig insertion hole 90 is formed in advance at a main housing 24. Under a state of a sub-assembly 88, in which a first motor housing 46, a deceleration mechanism 59, a ball screw mechanism 60 and a steering shaft 11 are assembled to the main housing 24, a jig 89 for restricting rotation of a rotary cylinder is inserted into the jig insertion hole 90 and engaged with a lock nut 70 to restrict a rotation of a large gear 62. Under this state, a small gear 61 is rotated and both a rotating angle and a rotating torque until teeth of the small gear 61 are contacted with teeth of the large gear 62 are measured and a back-lash of the deceleration mechanism 59 is measured. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：解决的问题：提供一种电动助力转向装置，其能够在减速机构组装在壳体中之后能够对减速机构的小齿轮和大齿轮之间的间隙进行高精度测量。解决方案：夹具插入孔90预先在主壳体24上形成。在子组件88的状态下，第一电动机壳体46，减速机构59，滚珠丝杠机构60和转向轴11组装到主壳体24上，用于限制旋转圆筒旋转的夹具89被插入到夹具插入孔90中并与锁紧螺母70啮合以限制大齿轮62的旋转。在该状态下，小齿轮61旋转，并且测量小齿轮61的齿与旋转角度和旋转力矩与大齿轮62的齿接触，并且测量减速机构59的后围。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2004352047A Electric power steering device 有权
公开(公告)号：JP2004352047A
公开(公告)日：2004-12-16
申请号：JP2003151238
申请日：2003-05-28
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： SARUWATARI TAKEHIRO , MURAKAMI TETSUYA , NAKAMURA KENSAKU , YAMANAKA KYOSUKE , MIZUHARA MASATO , MIYATA ATSUYA
IPC分类号： B62D5/04 , F16H1/12 , F16H55/18
CPC分类号： B62D5/0421 , F16H55/18 , F16H2055/185 , Y10T74/19633
摘要： PROBLEM TO BE SOLVED: To reduce noises and to secure sufficient strength in a rack assisting type electric power steering device. SOLUTION: The output of an electric motor is transmitted to a steering shaft through a speed reduction mechanism 22 including a small gear 30 and a large gear 31, and a ball screw mechanism. The teeth part 38 of the large gear 31 is formed of a synthetic resin material, and the teeth part 39 of the small gear 30 is formed of a metal material. Furthermore, the teeth part 38 of the large gear 31 is laterally displaced in a direction increasing dedendum thickness, and the teeth part 39 of the small gear 30 is laterally displaced in a direction decreasing the dedendum thickness. The impact of engagement between the small gear 30 and the large gear 31 is mitigated by the large gear 31 with the teeth part 38, thereby the noise of the speed reduction mechanism 22 is reduced. The arc dedendum thickness of the teeth part 38 of the large gear 31 is increased by the lateral displacement to further enhance the strength of the large gear 31. COPYRIGHT: (C)2005,JPO&NCIPI

4. 发明专利

JP2004299449A Electric power steering device 审中-公开
公开(公告)号：JP2004299449A
公开(公告)日：2004-10-28
申请号：JP2003091998
申请日：2003-03-28
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： MIYATA ATSUYA , NAKAMURA YASUHIRO , MURAKAMI TETSUYA , NAKAMURA KENSAKU , YAMANAKA KYOSUKE , MIZUHARA MASATO , HATAKEYAMA SATOSHI
IPC分类号： B62D5/04 , F16H25/20
摘要： PROBLEM TO BE SOLVED: To ensure a loading capacity to a load by a reaction force in addition to the prevention of hitting noises from occurring, and at the same time, to prevent a steering feeling from deteriorating.
SOLUTION: A ball screw mechanism 14 is formed by filling a plurality of balls 12 in a rolling passage 11 which is constituted by combining a ball screw part 3b formed on a rack spindle 3, and a spiral groove 7c formed on the inner periphery 7b of a ball nut 7. For each of a plurality of the balls 12 which become the same number, a resin ball 13 having a larger diameter than the ball 12 is arranged. The resin ball 13 absorbs a load by an elastic deformation, and prevents hitting noises from occurring, and at the same time, the balls 12 receive the load in the place of the elastically deformed resin ball 13, and a required loading capacity is ensured. The arrangement of the resin ball 13 is made even in the peripheral direction of the rack spindle 3 to improve the supporting balance of the rack spindle 3, and thus the initial steering feeling is improved.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2004353835A Ball screw and electric power steering using the same 审中-公开
公开(公告)号：JP2004353835A
公开(公告)日：2004-12-16
申请号：JP2003155413
申请日：2003-05-30
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： MIZUHARA MASATO , MIYATA ATSUYA , MURAKAMI TETSUYA , TAKADA NOBUSHIGE
IPC分类号： B62D5/04 , F16H25/22
CPC分类号： F16H25/2214 , B62D5/0448 , Y10T74/19767
摘要： PROBLEM TO BE SOLVED: To smoothly circulate rolling elements of a ball screw. SOLUTION: A rotating cylinder 25 and a screw shaft of a ball screw are screwed with each other through the rolling elements 30. The rolling elements 30 circulate in a spiral track S disposed between the rotating cylinder 25 and the screw shaft 29 through a circulation passage 35 made of, for example, a U-shaped tube. Setting the length L of the track from one end 37 to the other end 38 of the circulation passage 35 to a predetermined value rotates rolling elements 30 positioned at one end 37 and the other end 38 of the circulation passage 35 in the same direction so that they are brought into smooth rolling-contact with the corresponding rolling elements 30 positioned at first and second positions P1, P2 of the rotating cylinder 25. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2004291690A Electric power steering device 有权
公开(公告)号：JP2004291690A
公开(公告)日：2004-10-21
申请号：JP2003083611
申请日：2003-03-25
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： MIZUHARA MASATO , HATAKEYAMA SATOSHI , MURAKAMI TETSUYA , NAKAMURA YASUHIRO
IPC分类号： B62D5/04 , B62D5/24 , F16H25/22
CPC分类号： F16H25/2214 , B62D5/0448 , Y10T74/19753
摘要： PROBLEM TO BE SOLVED: To prevent outflow of a ball to the track outside of a ball screw track in a ball screw mechanism. SOLUTION: First hole 13a and second hole 13b for inserting a circulator are punched in mid-way of a spiral groove 12 formed on an inner periphery 7b of a ball nut 7. An intermediate groove passage 12a between the first hole 13a and the second hole 13b becomes a range of the ball screw track L1 for circulating the ball. Other ranges become first track outside L2 and second track outside L3. By making a groove depth of the intermediate groove passage 12a deeper than those of a first groove passage 12b of the first track outside L2 and a second groove passage 12c of the second track outside L3, the outflow of the ball to the groove passages 12b and 12c of each of the track outsides L2 and L3 from the intermediate groove passage 12a is prevented. COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004210064A Vehicle steering system 有权
公开(公告)号：JP2004210064A
公开(公告)日：2004-07-29
申请号：JP2002380824
申请日：2002-12-27
申请人： Koyo Seiko Co Ltd , 光洋精工株式会社
发明人： NAKAMURA KENSAKU , SARUWATARI TAKEHIRO , NAGAMATSU KAZUAKI , MIYATA ATSUYA , MURAKAMI TETSUYA , YAMANAKA KIYOUSUKE , MIZUHARA MASATO
IPC分类号： B62D5/04
摘要： PROBLEM TO BE SOLVED: To provide a vehicle steering system capable of accurate formation of a holding portion for holding a transmission bearing with a rotating cylinder without requiring much man-hour, mass-production, and reliable transmission from a rotary drive source for steering to a steering shaft.
SOLUTION: When transmission bearings R
1 to R
4 having an inner ring inclined at a given angle within the width of an outer ring are held by holding portions 21 to 24 formed in the axial cross-section of the rotation cylinder 2, the inner ring is engaged with thread groove 10 formed on the outer surface of a steering shaft 1, thereby facilitating the formation of the holding portions 21 to 24.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2006182157A Electric power steering gear 审中-公开
标题翻译：电动转向齿轮
公开(公告)号：JP2006182157A
公开(公告)日：2006-07-13
申请号：JP2004377160
申请日：2004-12-27
申请人： Favess Co Ltd , Jtekt Corp , 株式会社ジェイテクト , 株式会社ファーベス
发明人： MIZUHARA MASATO , OSUGA AKIRO , YAMAHANA DAIKI
IPC分类号： B62D5/04 , B62D5/22
摘要： PROBLEM TO BE SOLVED: To provide an electric power steering capable of avoiding generation of torsion in a housing when the housing is attached to a vehicle body. SOLUTION: A housing 5 which has a spiral groove and stores and supports a turning shaft moved in the axial direction according to the steering operation comprises a first cylindrical body 51 which has a first pivotably-supporting part to support one side of the turning shaft in the axial direction, a first attaching part 5c and a second attaching part 5d to be attached to the vehicle body at the position separate in the axial direction of the turning shaft, and supports a rotary shaft connected to an output shaft of an electric motor 6, and a second cylindrical body 52 having a second pivotably-supporting part which is connected to the first cylindrical body 51 to support the other side of the turning shaft in the axial direction. When the housing 5 is attached to the vehicle body, generation of the torsion of the housing 5 can be avoided. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种电动助力转向器，其能够在壳体附接到车身时避免在壳体中产生扭转。解决方案：具有螺旋槽并存储和支撑沿着轴向方向移动的转动轴的壳体5包括：第一圆柱体51，其具有第一可枢转支撑部分，以支撑所述转向轴的一侧沿轴向转动的轴，第一安装部5c和第二安装部5d，该第一安装部5c和第二安装部5d在与转动轴的轴向分离的位置处安装在车体上，并且支撑连接到转向轴的输出轴的旋转轴电动马达6和具有第二可枢转支撑部分的第二圆筒体52，第二圆筒体52连接到第一圆筒体51，以沿轴向支撑转轴的另一侧。当壳体5附接到车身时，可以避免壳体5的扭转的产生。版权所有（C）2006，JPO＆NCIPI

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