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1. CN107614928 - WORM SPEED REDUCER

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Office
China
Application Number 201680032068.5
Application Date 24.02.2016
Publication Number 107614928
Publication Date 19.01.2018
Grant Number 107614928
Grant Date 27.03.2020
Publication Kind B
IPC
F16H 1/16
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
1Toothed gearings for conveying rotary motion
02without gears having orbital motion
04involving only two intermeshing members
12with non-parallel axes
16comprising worm and worm-wheel
B62D 5/04
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
5Power-assisted or power-driven steering
04electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
F16C 23/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
23Bearings for exclusively rotary movement adjustable for aligning or positioning
06Ball or roller bearings
CPC
B62D 5/0409
BPERFORMING OPERATIONS; TRANSPORTING
62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
DMOTOR VEHICLES; TRAILERS
5Power-assisted or power-driven steering
04electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
0409Electric motor acting on the steering column
F16H 55/24
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
55Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
02Toothed members; Worms
22for transmissions with crossing shafts, especially worms, worm-gears
24Special devices for taking up backlash
F16C 23/06
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
23Bearings for exclusively rotary movement adjustable for aligning or positioning
06Ball or roller bearings
F16H 1/16
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
1Toothed gearings for conveying rotary motion
02without gears having orbital motion
04involving only two intermeshing members
12with non-parallel axes
16comprising worm and worm-wheel
F16H 57/022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
57General details of gearing
02Gearboxes; Mounting gearing therein
021Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
022Adjustment of transmission shafts or bearings
F16H 57/12
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
HGEARING
57General details of gearing
12Arrangements for adjusting or for taking-up backlash not provided for elsewhere
Applicants NSK LTD.
日本精工株式会社
Inventors SEGAWA TORU
瀬川彻
Agents 北京奉思知识产权代理有限公司 11464
北京奉思知识产权代理有限公司 11464
Priority Data 2015-130136 29.06.2015 JP
2015-156671 07.08.2015 JP
2015-216238 04.11.2015 JP
2015-216239 04.11.2015 JP
2015-216240 04.11.2015 JP
2015-245532 16.12.2015 JP
2016-018456 03.02.2016 JP
Title
(EN) WORM SPEED REDUCER
(ZH) 蜗轮蜗杆减速器
front page image
Abstract
(EN) A pair of wedge-shaped pieces (24, 24) is provided so as to fill a ring-shaped space (34), which exists between the inner circumferential surface of a holding recess (21) and the outer circumferentialsurface of a bearing holder (22), at two locations of said ring-shaped space (34) that are symmetric with respect to an imaginary plane ([alpha]), which comprises the section where a worm wheel (13)meshes worm teeth (17) and the central axis of the worm (14). Elastic forces are applied on the two wedge-shaped pieces (24, 24) in the circumferential direction away from the meshing section. In a worm speed reducer provided with a biasing means for elastically biasing the worm teeth toward the worm wheel, it is thereby possible to prevent displacement of the distal end of the worm in a directionperpendicular to the biasing direction.
(ZH) 将1对楔状片(24、24)设置为：在存在于保持凹部(21)的内周面与轴承托架(22)的外周面之间的环状空间(34)中，在关于包含蜗轮(13)与蜗杆齿(17)的啮合部、以及蜗杆(14)的中心轴的虚拟平面(α)对称的2处位置填埋所述环状空间(34)。而且，对所述两个楔状片(24、24)付与在圆周方向上从所述啮合部离开的方向的弹力。由此，在包括将蜗杆齿向蜗轮弹性地施力的施力单元的蜗轮蜗杆减速器中，能够阻止蜗杆的末端部向与施力方向成直角的方向变位。
Related patent documents
EP3315817
US20180156325
JPWO2017002393
WO/2017/002393
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