CA2619580A1 - Driving device for power steering - Google Patents

Driving device for power steering Download PDF

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Publication number
CA2619580A1
CA2619580A1 CA 2619580 CA2619580A CA2619580A1 CA 2619580 A1 CA2619580 A1 CA 2619580A1 CA 2619580 CA2619580 CA 2619580 CA 2619580 A CA2619580 A CA 2619580A CA 2619580 A1 CA2619580 A1 CA 2619580A1
Authority
CA
Canada
Prior art keywords
serration
output shaft
teeth
input shaft
input
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.)
Granted
Application number
CA 2619580
Other languages
French (fr)
Other versions
CA2619580C (en
Inventor
Takashi Kokubo
Yoshizo Watanabe
Masataka Hayashi
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.)
KYB Corp
Original Assignee
Kayaba Industry Co 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 Kayaba Industry Co Ltd filed Critical Kayaba Industry Co Ltd
Priority to CA2619580A priority Critical patent/CA2619580C/en
Publication of CA2619580A1 publication Critical patent/CA2619580A1/en
Application granted granted Critical
Publication of CA2619580C publication Critical patent/CA2619580C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D6/00—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits
    • B62D6/08—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque
    • B62D6/10—Arrangements for automatically controlling steering depending on driving conditions sensed and responded to, e.g. control circuits responsive only to driver input torque characterised by means for sensing or determining torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/01—Motorcycles with four or more wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/08—Cycles with handlebars, equipped with three or more main road wheels with steering devices acting on two or more wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Steering Mechanism (AREA)

Abstract

A power steering driving device 100 includes an input shaft 6 provided with a serration 8 and connected to an input mechanism 3 linked to a steering handle 2, an output shaft 7 provided with a serration 10 and connected to an output mechanism 5 linked to a vehicle wheel 4, and a torsion bar 15 that connects the input shaft 6 and the output shaft 7 coaxially. The serration 8 of the input shaft 6 and the serration 10 of the output shaft 7 are formed such that a ratio between the respective numbers of teeth thereof is a decimal, and to specify a relative rotation position of the input shaft 6 and the output shaft 7 relative to the input mechanism 3 and the output mechanism 5, a tooth on the serration 8 of the input shaft 6 and a tooth on the serration 10 of the output shaft 7 having a relative position deviation angle about an identical central axis which is equal to or smaller than an allowable value are selected as reference teeth.

Claims (6)

1. A driving device for a power steering, comprising:

an input shaft provided with a serration and connected to an input mechanism linked to a steering handle via the serration;

an output shaft provided with a serration and connected to an output mechanism linked to a vehicle wheel via the serration; and a torsion bar that connects the input shaft and the output shaft coaxially and restricts relative rotation between the input shaft and the output shaft about an identical central axis, wherein the serration of the input shaft and the serration of the output shaft are formed with a different number of teeth, and a ratio between the numbers of teeth is a decimal, and to specify a relative rotation position of the input shaft and the output shaft relative to the input mechanism and the output mechanism, a tooth on the serration of the input shaft and a tooth on the serration of the output shaft having a relative position deviation angle about an identical central axis which is equal to or smaller than an allowable value are selected as reference teeth.
2. The driving device for a power steering as defined in Claim 1, wherein the reference teeth are respectively connected to valley portions of the input mechanism and the output mechanism in a state where the input mechanism and the output mechanism are disposed in the neutral position.
3. The driving device for a power steering as defined in Claim 1, wherein the numbers of teeth on the serrations of the input shaft and the output shaft are set such that a calculated value, which is calculated as 1/2 a minimum difference between multiple values of pitch angles of the serration on the input shaft and the serration on the output shaft up to a least common multiple, is equal to or lower than the allowable value, and the teeth having the relative position deviation angle about an identical central axis which is equal to or smaller than the calculated value are selected as the reference teeth.
4. The driving device for a power steering as defined in Claim 1, wherein the numbers of teeth on the serrations of the input shaft and the output shaft are set such that a calculated value, which is calculated as 1/2 a greatest common divisor of pitch angles of the serration on the input shaft and the serration on the output shaft, is equal to or lower than the allowable value, and the teeth having the relative position deviation angle about an identical central axis which is equal to or smaller than the calculated value are selected as the reference teeth.
5. The driving device for a power steering as defined in Claim 1, wherein a marking is formed on the reference tooth of at least one of the serration on the input shaft and the serration on the output shaft or in a position corresponding to the reference tooth.
6. The driving device for a power steering as defined in Claim 1, wherein the steering handle is a bar handle.
CA2619580A 2008-02-01 2008-02-01 Driving device for power steering Expired - Fee Related CA2619580C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2619580A CA2619580C (en) 2008-02-01 2008-02-01 Driving device for power steering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2619580A CA2619580C (en) 2008-02-01 2008-02-01 Driving device for power steering

Publications (2)

Publication Number Publication Date
CA2619580A1 true CA2619580A1 (en) 2009-08-01
CA2619580C CA2619580C (en) 2011-02-08

Family

ID=40911846

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2619580A Expired - Fee Related CA2619580C (en) 2008-02-01 2008-02-01 Driving device for power steering

Country Status (1)

Country Link
CA (1) CA2619580C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3498572A1 (en) * 2017-12-15 2019-06-19 Jtekt Corporation Steering system
US20200025282A1 (en) * 2018-07-19 2020-01-23 Hitachi Automotive Systems, Ltd. Steering device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3498572A1 (en) * 2017-12-15 2019-06-19 Jtekt Corporation Steering system
US10858036B2 (en) 2017-12-15 2020-12-08 Jtekt Corporation Steering system
US20200025282A1 (en) * 2018-07-19 2020-01-23 Hitachi Automotive Systems, Ltd. Steering device
CN110733558A (en) * 2018-07-19 2020-01-31 日立汽车系统株式会社 Steering device

Also Published As

Publication number Publication date
CA2619580C (en) 2011-02-08

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20210201