Apparatus for adjusting attitude of optical axes of head lamps on vehicle
US5010457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1990 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Jul 31, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/076
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An apparatus for properly adjusting an attitude of optical axes of head lamps on a vehicle includes a motor driven actuator and a controlling section. The motor driven actuator additionally includes a voltage dividing circuit comprising two resistors and one of a plurality of contact positions in the controlling section is earthed directly, whereby a resistance value of the controlling section becomes zero ohm when the angle of elevation assumed by the head lamps is maximized in an upward tilted state. A motor circuit in the motor driven actuator includes in a power supply line an element for preventing an excessive intensity of electric current from being fed to a motor when motor is held in a blocked state for some reason. Preferably, the element has positive temperature characteristics which suppress generation of heat when rotation of the motor is blocked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.