JPS55486A - Automotive tachometer - Google Patents

Automotive tachometer

Info

Publication number
JPS55486A
JPS55486A JP5057979A JP5057979A JPS55486A JP S55486 A JPS55486 A JP S55486A JP 5057979 A JP5057979 A JP 5057979A JP 5057979 A JP5057979 A JP 5057979A JP S55486 A JPS55486 A JP S55486A
Authority
JP
Japan
Prior art keywords
outer circumference
disc
tachometer
magnetized
rotations
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
JP5057979A
Other languages
Japanese (ja)
Inventor
Kunio Okazaki
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.)
Stanley Electric Co Ltd
Original Assignee
Stanley Electric 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 Stanley Electric Co Ltd filed Critical Stanley Electric Co Ltd
Priority to JP5057979A priority Critical patent/JPS55486A/en
Publication of JPS55486A publication Critical patent/JPS55486A/en
Pending legal-status Critical Current

Links

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  • Linear Or Angular Velocity Measurement And Their Indicating Devices (AREA)

Abstract

PURPOSE: To instantly detect the number of rotations of a prime mover by turning a disc of a permanent magnet in a manner to correspond to a rotary portion so that the variations in the magnetic flux due to the roughnesses on the outer circumference are taken out as electric signals by means of a pickup coil.
CONSTITUTION: A rotary disc 1 made of a permanent magnet has its outer circumference formed with a number of equidistantly spaced teeth, the leading ends of which are magnetized to an N polarity while having their valleys magnetized to a P polarity. On the other hand, a pickup coil 3 is arranged in the vicinity of the outer circumference thereby to produce a tachometer so that the variations in the magnetic flux due to the tooth portions 2 in accordance with the rotations of the disc 1 are detected as electric signals from the coil 3. The aforementioned tachometer is connected to the wheel of an automobile through a gear or wire so that the number of revolutions is detected to meter the vehicular speed.
COPYRIGHT: (C)1980,JPO&Japio
JP5057979A 1979-04-24 1979-04-24 Automotive tachometer Pending JPS55486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5057979A JPS55486A (en) 1979-04-24 1979-04-24 Automotive tachometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5057979A JPS55486A (en) 1979-04-24 1979-04-24 Automotive tachometer

Publications (1)

Publication Number Publication Date
JPS55486A true JPS55486A (en) 1980-01-05

Family

ID=12862890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5057979A Pending JPS55486A (en) 1979-04-24 1979-04-24 Automotive tachometer

Country Status (1)

Country Link
JP (1) JPS55486A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63165543A (en) * 1986-12-26 1988-07-08 株式会社クラレ Special bulky yarn and its production
JPH01183539A (en) * 1988-01-18 1989-07-21 Toray Ind Inc Alternately wound false twist yarn and production thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63165543A (en) * 1986-12-26 1988-07-08 株式会社クラレ Special bulky yarn and its production
JPH01183539A (en) * 1988-01-18 1989-07-21 Toray Ind Inc Alternately wound false twist yarn and production thereof

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