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1. 发明公开

EP4067966A1 ELASTIC WORM GEAR ASSEMBLY AND USE THEREOF 审中-实审
公开(公告)号：EP4067966A1
公开(公告)日：2022-10-05
申请号：EP21202324.6
申请日：2021-10-13
申请人： Nantong Schmidt Opto-Electrical Technology Co., Ltd.
发明人： SUN, Yu Feng , ZHU, Xue Feng
IPC分类号： G02B23/16 , F16H55/14 , F16H55/24
摘要： A mount for a telescope incorporates a worm gear assembly comprising: a worm wheel connected to a telescope holder, such that movement of the worm wheel about a wheel axis causes movement of the holder about the wheel axis; and a worm shaft having a worm body extending in a longitudinal direction and a thread extending in a spiral on the worm body around a worm axis orthogonal to the wheel axis. The worm shaft is supported by a base for rotational movement. The worm wheel comprises a plurality teeth for engaging the worm shaft thread, so that rotation of the worm shaft about the worm axis causes corresponding rotation of the worm wheel, and corresponding relative rotation between the holder and the base, about the wheel axis. The wheel body defines a plurality of elasticityenhancing cutouts spaced apart from the wheel axis and extending through the wheel body.

2. 发明公开

EP4005901A1 BEARING BUSHING, PRELOAD STRUCTURE, HOUSING OF TRANSMISSION MECHANISM, AND ASSEMBLING STRUCTURE OF WORM GEAR AND WORM 有权
公开(公告)号：EP4005901A1
公开(公告)日：2022-06-01
申请号：EP20846201.0
申请日：2020-06-05
申请人： Bosch Huayu Steering Systems Co., Ltd.
发明人： PAN, Yishan , DONG, Hang , JIANG, Zhuo , HUA, Dandan , FENG, Xinghui , CHEN, Haiming , LI, Shan , TANG, Meng , QIAN, Jiemiao
IPC分类号： B62D3/04 , B62D5/04 , F16H55/24
摘要： A bearing bushing, comprising: a bushing body and a buffer member fixed therein. The buffer member comprising a spring piece. The spring piece is provided on the top of the bushing body, and comprises an extending part and a fixed part. The extending part obliquely extends downward from two opposite sides of the fixed part. The bearing bushing provides a special preload force for the deformation of the fixed part by means of the extending part of the spring piece so as to enhance the robustness of the preload design, reduce the friction torque, and reduce the engaging noise of the worm gear and the worm in different working situations. Also disclosed are a preload structure, a housing of a transmission mechanism, and an assembling structure of a worm gear and a worm.

3. 发明公开

EP3926190A1 WORM REDUCER AND ELECTRIC ASSIST DEVICE 有权
公开(公告)号：EP3926190A1
公开(公告)日：2021-12-22
申请号：EP20755430.4
申请日：2020-01-15
申请人： NSK Ltd.
发明人： OOSAWA, Ryou , ISHIKURI, Satoshi , KIYOTA, Haruhiko , MATSUMOTO, Souta , ISHII, Toru , SUGAWARA, Hiroyuki
IPC分类号： F16C19/06 , F16C27/06 , F16H1/16 , B62D5/04 , F16H55/24
摘要： A structure capable of preventing the tip end portion of the worm from being displaced in a direction orthogonal to the biasing direction is provided for the worm reducer comprising a means for elastically biasing the tip end portion of the worm toward the worm wheel side. The support bearing 17 supports the tip end portion of the worm 16 is elastically biased toward the worm wheel 15 side by the elastic biasing means 81, and the support bearing 17 is elastically held by the elastic holding means 82 from both sides in the second direction orthogonal to the first direction parallel to the biasing direction by the elastic biasing means 81 and to the center axis of the worm housing portion 22.

4. 发明授权

EP3259504B1 GEARBOX FOR ELECTRIC ASSISTED STEERING APPARATUS 有权
公开(公告)号：EP3259504B1
公开(公告)日：2020-04-08
申请号：EP16706403.9
申请日：2016-02-17
申请人： TRW Limited
发明人： GIBBS, Paul David
IPC分类号： F16H55/24 , B62D5/04

5. 发明授权

EP3173313B1 ELECTRIC POWER STEERING DEVICE 有权
公开(公告)号：EP3173313B1
公开(公告)日：2019-03-20
申请号：EP15845128.6
申请日：2015-04-24
申请人： NSK Ltd.
发明人： SEGAWA, Toru
IPC分类号： B62D5/04 , F16H55/24 , F16H1/16

6. 发明授权

EP3213978B1 ELECTRIC POWER STEERING DEVICE 有权
公开(公告)号：EP3213978B1
公开(公告)日：2018-12-12
申请号：EP15869926.4
申请日：2015-12-14
申请人： NSK Ltd.
发明人： MIYAKE, Masaki
IPC分类号： B62D5/04 , F16H1/16 , F16H55/18 , F16H55/24
CPC分类号： F16H55/24 , B32B7/02 , B62D5/04 , B62D5/0409 , B62D5/0421 , B62D5/0454
摘要： An electric power steering device includes a composite metal member. The composite metal member is formed by laminating a plurality of metal plates that have different thermal expansion coefficients. The composite metal member is capable of causing a worm shaft to oscillate and be displaced away from a worm wheel on the basis of deformation of the composite metal member if the temperature thereof has become higher than a reference temperature. The composite metal member is also capable of causing the worm shaft to oscillate and be displaced towards the worm wheel on the basis of deformation of the composite metal member if the temperature thereof has become lower than the reference temperature.

7. 发明授权

EP3088277B1 WORM REDUCTION GEAR AND STEERING MECHANISM 有权
公开(公告)号：EP3088277B1
公开(公告)日：2018-11-28
申请号：EP16167035.1
申请日：2016-04-26
申请人： JTEKT Corporation
发明人： KAWAMURA, Naofumi
IPC分类号： B62D5/04 , F16H55/24
CPC分类号： B62D5/0409 , B62D5/0454 , F16H1/16 , F16H55/24 , F16H57/021 , F16H57/039 , F16H57/12 , F16H2057/0213 , F16H2057/127
摘要： In a worm reduction gear, a second bearing (34) that supports a second end of a worm shaft (18) and a guide member (50q, 50s, 50t, 50) are housed in a holding hole (44) in a housing (17). A bias member (60) biases the second end of the worm shaft toward the worm wheel (19) in a second direction. The guide member is elastically fitted in the holding hole in the housing to guide movement of the second end via the second bearing. A slit (53) is formed in the guide member. Stress is relieved which is exerted on the guide member when the guide member is elastically fitted in the holding hole.

8. 发明公开

EP3315817A4 WORM SPEED REDUCER 审中-公开
公开(公告)号：EP3315817A4
公开(公告)日：2018-07-25
申请号：EP16817503
申请日：2016-02-24
申请人： NSK LTD
发明人： SEGAWA TORU
IPC分类号： F16H1/16 , B62D5/04 , F16C23/06 , F16H55/24
CPC分类号： F16H57/022 , B62D5/0409 , F16C23/06 , F16C27/04 , F16H1/16 , F16H55/24 , F16H57/12 , F16H2057/0213 , F16H2057/0224 , F16H2057/127
摘要： A pair of wedge-shaped pieces (24, 24) are provided in an annular space (34) that is defined between an inner circumferential surface of a holding recess portion (21) and an outer circumferential surface of a bearing holder (22) in two position that are symmetrical with each other with respect to a meshing portion between a worm wheel (13) and worm teeth (17) and an imaginary plane ± that contains a center axis of a worm (14) in such a way as to fill the annular space (34). Then, an elastic force is imparted to both the wedge-shaped pieces (24, 24) in a direction in which the pair of wedge-shaped pieces move away from the meshing portion in relation to a circumferential direction. According to the above, in a worm reduction gear including a biasing device that elastically biases the worm teeth towards the worm wheel, a distal end portion of the worm is prevented from being displaced in a direction that is at right angles to the biasing direction.

9. 发明公开

EP3212970A1 SCHNECKENRAD FÜR EINE ELEKTROMECHANISCHE HILFSKRAFTLENKUNG 审中-公开
标题翻译： SCHNECKENRADFÜREINE ELEKTROMECHANISCHE HILFSKRAFTLENKUNG
公开(公告)号：EP3212970A1
公开(公告)日：2017-09-06
申请号：EP15747432.1
申请日：2015-07-31
申请人： ThyssenKrupp Presta AG , thyssenkrupp AG
发明人： SCHNELLMANN, Ives
IPC分类号： F16H55/06 , F16H55/22 , F16H55/24
CPC分类号： F16H55/06 , B29C45/0025 , B29C45/0046 , B29C45/14549 , B29C2045/0049 , F16H55/22 , F16H55/24 , F16H2055/065
摘要： The invention relates to a worm gear (4) for an electromechanical power steering system for arranging on a steering shaft (1), comprising an insert (40) which is encapsulated with a plastic in order to form a toothed rim (48), wherein the toothed rim (48) comprises at least one injection section (45) in which at least one injection point (44) is arranged and which has a first material thickness (measured in the direction of the worm gear axis (400)), and the toothed rim (48) comprises at least one retardation section (43) which has a reduced material thickness relative to the injection section (measured in the direction of the worm gear axis (400)), wherein the retardation section (43) of reduced material thickness is arranged between an injection point (44) and the outer surface of the circumferential toothing system (49), wherein the retardation section (43) of reduced material thickness is formed by at least one retardation element (42, 56) for backing up the plastic during the injection moulding encapsulation.
摘要翻译：本发明涉及一种用于布置在转向轴（1）上的机电动力转向系统的蜗轮（4），其包括用塑料封装以形成齿轮缘（48）的插入件（40），其中（48）包括至少一个喷射部分（45），其中布置有至少一个喷射点（44）并且具有第一材料厚度（在蜗轮轴线（400）的方向上测量），以及（48）包括至少一个延迟部分（43），该延迟部分相对于注入部分具有减小的材料厚度（在蜗轮轴线（400）的方向上测量），其中减小的延迟部分（43）材料厚度布置在注射点（44）与周向齿形系统（49）的外表面之间，其中材料厚度减小的延迟部分（43）由至少一个用于支撑的延迟元件（42,56）在注入期间注塑成型封装。

10. 发明公开

EP3192719A1 ELECTRICALLY DRIVEN POWER STEERING DEVICE 审中-公开
标题翻译：电动助力转向装置
公开(公告)号：EP3192719A1
公开(公告)日：2017-07-19
申请号：EP15840023.4
申请日：2015-04-24
申请人： NSK Ltd.
发明人： SEGAWA, Toru
IPC分类号： B62D5/04 , F16H1/16 , F16H55/24
CPC分类号： B62D5/0409 , B62D5/04 , B62D5/0454 , F16H1/16 , F16H55/24
摘要： Between an outer circumferential surface of a tip side bearing (9a) externally fitted into and supported by a tip portion of a worm shaft (6a) and an inner circumferential surface of a holding recessed portion (10a) of a housing (3a), a guide piece (30) is disposed in a state where a displacement in a circumferential direction is blocked and a wedge piece (39) is disposed in a state where a displacement in the circumferential direction is allowed. A structure is adopted that removes backlash of a meshing portion by biasing the outer circumferential surface of the tip side bearing (9a) toward a worm wheel (4) side with a wedge surface (45) disposed on an inner circumferential surface of the wedge piece (39) and a guide surface disposed on an inner circumferential surface of the guide piece (30) based on a displacement of the wedge piece (39) in the circumferential direction using elastic force of a coil spring (28) for a wedge piece. Then, a structure is realized that suppresses a displacement of worm teeth in relation to a direction perpendicular to a meshing direction of the worm teeth and the worm wheel and an axial direction of the worm shaft and suppresses the generation of a rattling noise in the meshing portion when rotational vibration is applied from a wheel side to a rotating shaft for steering.
摘要翻译：在外嵌于蜗杆轴（6a）的前端部并被其支承的前端侧轴承（9a）的外周面与壳体（3a）的保持凹部（10a）的内周面之间，所述引导片（30）以在圆周方向上的位移被阻止并且在允许沿周向的位移的状态下配置有楔片（39）的状态下配置。采用一种结构，其通过将楔形件（45）的楔形表面（45）设置在楔形件的内圆周表面上，通过朝向蜗轮（4）侧偏压尖端侧轴承（9a）的外圆周表面来去除啮合部分的齿隙利用楔片用螺旋弹簧（28）的弹性力，根据楔片（39）的周向位移，在引导片（30）的内周面设置引导面（39）和引导面。于是，实现了抑制蜗杆齿相对于与蜗杆齿和蜗轮的啮合方向垂直的方向的位移和蜗杆轴的轴向方向的结构，并且抑制啮合中产生喀哒声当从车轮侧施加旋转振动到用于转向的旋转轴时。

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