JPS55486A - Automotive tachometer - Google Patents
Automotive tachometerInfo
- 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
Links
Landscapes
- 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
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)
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 |
-
1979
- 1979-04-24 JP JP5057979A patent/JPS55486A/en active Pending
Cited By (2)
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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