JPS5551665A - Rack-pinion type variable gear-ratio system steering apparatus - Google Patents

Rack-pinion type variable gear-ratio system steering apparatus

Info

Publication number
JPS5551665A
JPS5551665A JP12251878A JP12251878A JPS5551665A JP S5551665 A JPS5551665 A JP S5551665A JP 12251878 A JP12251878 A JP 12251878A JP 12251878 A JP12251878 A JP 12251878A JP S5551665 A JPS5551665 A JP S5551665A
Authority
JP
Japan
Prior art keywords
rack
standard pitch
pieces
teeth
tooth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12251878A
Other languages
Japanese (ja)
Inventor
Yasumasa Mizukoshi
Junji Kojima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NSK Ltd filed Critical NSK Ltd
Priority to JP12251878A priority Critical patent/JPS5551665A/en
Publication of JPS5551665A publication Critical patent/JPS5551665A/en
Pending legal-status Critical Current

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  • Transmission Devices (AREA)

Abstract

PURPOSE: To dissolve the hanging of steering sense at the gear-ratio minimum position and enable smooth steering by forming the gear form of a helical pinion so that the radius ρ, of standard pitch circle a varies according to the angle θ of revolution.
CONSTITUTION: A helical pinion 1 which engages with the rack of the rack shaft in the steering apparatus of a car has five pieces of teeth 15W19. As for these five pieces of teeth, the length of tooth deddendum is equal but the length of tooth addendum different, and the length of the tooth deddendum of the upper side tooth 15 is shortest, and two pieces of lower side teeth 18 and 19 are longest, and other two pieces of teeth are intermedium. When a standard pitch circule is designated 14, and the angle formed by an arbitrary point 14A on the standard pitch circle and the line YWY' is designated θ, then the radius of the standard pitch circle decreases as the agnle θ of revolution reduces, and when the angle θ of revolution is 180 degrees, the redius ρn of the minimum standard pitch cicrcle is formed. Thus, the pressure angle of the rack can be reduced, and steering sense can be improved.
COPYRIGHT: (C)1980,JPO&Japio
JP12251878A 1978-10-06 1978-10-06 Rack-pinion type variable gear-ratio system steering apparatus Pending JPS5551665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12251878A JPS5551665A (en) 1978-10-06 1978-10-06 Rack-pinion type variable gear-ratio system steering apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12251878A JPS5551665A (en) 1978-10-06 1978-10-06 Rack-pinion type variable gear-ratio system steering apparatus

Publications (1)

Publication Number Publication Date
JPS5551665A true JPS5551665A (en) 1980-04-15

Family

ID=14837829

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12251878A Pending JPS5551665A (en) 1978-10-06 1978-10-06 Rack-pinion type variable gear-ratio system steering apparatus

Country Status (1)

Country Link
JP (1) JPS5551665A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047017A2 (en) * 1980-09-01 1982-03-10 Nissan Motor Co., Ltd. Variable ratio rack and pinion steering gear for vehicles
JPS5769155A (en) * 1980-10-16 1982-04-27 Nissan Motor Co Ltd Rack and pinion type variable gear ratio steering gear apparatus
JPS57116573U (en) * 1981-01-12 1982-07-19
JPS57116574U (en) * 1981-01-12 1982-07-19
US4444070A (en) * 1980-09-01 1984-04-24 Nissan Motor Co., Ltd. Variable ratio rack and pinion steering gear
JPS6434552A (en) * 1987-07-31 1989-02-06 Kawasaki Steel Co Apparatus for controlling pouring of molten metal
JPH01106776A (en) * 1987-10-20 1989-04-24 Koyo Seiko Co Ltd Power steering device
JP2005271605A (en) * 2004-03-22 2005-10-06 Sumitomo Rubber Ind Ltd Power steering device
US20120080861A1 (en) * 2010-09-30 2012-04-05 Kia Motors Corporation Steering apparatus for vehicle
JP2013184597A (en) * 2012-03-08 2013-09-19 Jtekt Corp Steering device

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444070A (en) * 1980-09-01 1984-04-24 Nissan Motor Co., Ltd. Variable ratio rack and pinion steering gear
EP0047017A2 (en) * 1980-09-01 1982-03-10 Nissan Motor Co., Ltd. Variable ratio rack and pinion steering gear for vehicles
JPS5769155A (en) * 1980-10-16 1982-04-27 Nissan Motor Co Ltd Rack and pinion type variable gear ratio steering gear apparatus
US4475413A (en) * 1980-10-16 1984-10-09 Nissan Motor Company, Limited Variable ratio rack and pinion steering gear
JPS626925Y2 (en) * 1981-01-12 1987-02-18
JPS57116574U (en) * 1981-01-12 1982-07-19
JPS57116573U (en) * 1981-01-12 1982-07-19
JPS6434552A (en) * 1987-07-31 1989-02-06 Kawasaki Steel Co Apparatus for controlling pouring of molten metal
JPH01106776A (en) * 1987-10-20 1989-04-24 Koyo Seiko Co Ltd Power steering device
JP2005271605A (en) * 2004-03-22 2005-10-06 Sumitomo Rubber Ind Ltd Power steering device
US20120080861A1 (en) * 2010-09-30 2012-04-05 Kia Motors Corporation Steering apparatus for vehicle
US8376379B2 (en) * 2010-09-30 2013-02-19 Hyundai Motor Company Steering apparatus for vehicle
JP2013184597A (en) * 2012-03-08 2013-09-19 Jtekt Corp Steering device

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