High/low switching mechanism of vehicle headlight
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United States of America Patent
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N/A
Issued Date -
Dec 25, 2003
app pub date -
Jun 22, 2002
filing date -
Jun 22, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A vehicle headlight includes a light source, such as a light bulb, arranged inside a concave reflector. A mechanism is incorporated in the headlight for switching between high beam and low beam of the headlight. The switching mechanism includes a base fixed inside the vehicle headlight and retaining the light bulb. A frame is mounted to the base. Two shielding members are pivotally mounted to the frame on opposite sides of the bulb. A control plate is pivoted to the base and driven by a solenoid between active and inactive positions. A link bar has an end attached to the control plate and an opposite end pivoted to the shielding members whereby when the control plate is driven to the active position by the solenoid, the shielding members are rotated, by being driven by the pivotal connection between the link bar and the shielding members, to a position where the shielding members partially shield the light bulb and block a portion of light generated by the light bulb incident upon the reflector thereby realizing the low beam of the vehicle headlight, and when the control plate is moved to the inactive position by the solenoid, the shielding members are rotated away from the light bulb and no longer block the light generated by the light bulb thereby realizing the high beam of the vehicle headlight.
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