GB1485934A - Indicating instruments - Google Patents
Indicating instrumentsInfo
- Publication number
- GB1485934A GB1485934A GB94176A GB94176A GB1485934A GB 1485934 A GB1485934 A GB 1485934A GB 94176 A GB94176 A GB 94176A GB 94176 A GB94176 A GB 94176A GB 1485934 A GB1485934 A GB 1485934A
- Authority
- GB
- United Kingdom
- Prior art keywords
- motor
- odometer
- gear
- frequency
- speedometer
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/07—Indicating devices, e.g. for remote indication
- G01P1/08—Arrangements of scales, pointers, lamps or acoustic indicators, e.g. in automobile speedometers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
- G01P1/04—Special adaptations of driving means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/49—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents
- G01P3/495—Devices characterised by the use of electric or magnetic means for measuring angular speed using eddy currents where the indicating means responds to forces produced by the eddy currents and the generating magnetic field
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Instrument Panels (AREA)
- Indicating Measured Values (AREA)
- Measurement Of Distances Traversed On The Ground (AREA)
Abstract
1485934 Speedometers; tachometers; odometer FORD MOTOR CO Ltd 10 Jan 1976 00941/76 Heading G1K An indicating instrument comprises an indicating member 25 movable relative to a fixed datum, a constant speed motor 10 drivingly connected to the indicating member by an electromagnetic coupling 27, and a drive circuit 30 which controls the coupling 27 in dependence on an input signal representing a parameter to be displayed. As shown, the motor 10 is driven by an oscillator 12 whose frequency is controlled by a crystal 14, via a divider circuit 16 and a shaping circuit 18. In a motor vehicle instrument system the motor 10 drives a clock 20 directly and a speedometer 22, tachometer 46, and odometer 56 via gearing 26 and respective electromagnetic couplings. The speedometer receives pulses from a sensor 28 at a frequency representing road speed. The drive circuit 30 supplies fixed length pulses at said frequency to a fixed coil 40 of the coupling 27. The motor 10 drives a rotor 38 with magnetic poles, and an electrically conductive disc 42 between the rotor 38 and coil 40 experiences a torque dependent on the frequency of the signal to the coil 40. The indicating member 25 is a pointer fixed to the disc 42 and having a spring 44 opposing the applied torque. The tachometer is similar to the speedometer, but receives a signal dependent on engine speed. The odometer 56 has an input shaft 58 carrying a gear-wheel 60 which has a portion, e.g. 5% without teeth. A leaf-spring 62 on the gear-wheel 60 is aligned with the toothless portion and can be attracted by an electromagnet 64 into engagement with the teeth of the adjacent gear 26. A switching circuit 66 of the drive circuit 30 energizes the magnet 64 as each consecutive unit of distance is completed, allowing the gear-wheel 60 to be rotated one turn, to advance the odometer counter.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB94176A GB1485934A (en) | 1976-01-10 | 1976-01-10 | Indicating instruments |
DE19762658733 DE2658733C2 (en) | 1976-01-10 | 1976-12-24 | Display device for several measured variables in motor vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB94176A GB1485934A (en) | 1976-01-10 | 1976-01-10 | Indicating instruments |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1485934A true GB1485934A (en) | 1977-09-14 |
Family
ID=9713209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB94176A Expired GB1485934A (en) | 1976-01-10 | 1976-01-10 | Indicating instruments |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2658733C2 (en) |
GB (1) | GB1485934A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106225809A (en) * | 2016-09-06 | 2016-12-14 | 陕西法士特齿轮有限责任公司 | A kind of electronic odometer sensor experiment device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3618109A1 (en) * | 1986-05-30 | 1987-12-03 | Moto Meter Ag | Tachograph (recording speedometer) for motor vehicles |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1277602B (en) * | 1965-03-05 | 1968-09-12 | Motorola Inc | Device for displaying the repetition frequency and the number of working periods of a periodically moving part |
-
1976
- 1976-01-10 GB GB94176A patent/GB1485934A/en not_active Expired
- 1976-12-24 DE DE19762658733 patent/DE2658733C2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106225809A (en) * | 2016-09-06 | 2016-12-14 | 陕西法士特齿轮有限责任公司 | A kind of electronic odometer sensor experiment device |
CN106225809B (en) * | 2016-09-06 | 2023-06-13 | 陕西法士特齿轮有限责任公司 | Electronic odometer sensor experimental device |
Also Published As
Publication number | Publication date |
---|---|
DE2658733A1 (en) | 1977-07-14 |
DE2658733C2 (en) | 1982-08-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |