Rotary Electromagnetic Actuator and Car Lamp Low Beam and High Beam Light Switching Device

摘要

A rotary electromagnetic actuator for car lamp low beam and high beam light switching device, comprises a shell (401), a rotor (402), a stator (403), a rotating shaft (405) and an end cover (407). The stator is fixedly installed in the shell to form a pair of arc-shaped stator magnetic poles(409) on which electric excitation can be applied; the rotor, as an arc-shaped permanent magnet, is fixed on the rotating shaft and is located in a magnetic field space of the arc-shaped magnetic poles of the stator; and the rotor is matched with the arc-shaped stator magnetic poles to form a closed magnetic circuit with an air gap(410); two swing bars(406) are connected to two ends of the rotating shaft respectively.

主权项

1. A car lamp low beam and high beam light switching device, comprising a light screen (2), a rotary electromagnetic actuator (4), and a bracket (5) fixed on the lamp body (1), characterized in that:
wherein the rotary electromagnetic actuator (4) comprises a shell (401), a rotor (402), a stator (403), a rotating shaft (405) and an end cover (407), and used for driving a light screen (2) of a car lamp low beam and high beam light switching device; a stator winding (404) is arranged on the stator (403), and the stator (403) and the stator winding (404) are fixedly mounted in the shell (401) to form a pair of arc-shaped stator magnetic poles (409) on which electric excitation can be applied; the rotor (402), which is an arc-shaped permanent magnet with a central angle up to that of a semicircle, is fixed on the rotating shaft (405) and is located in the up to semicircular magnetic field space formed by the arc-shaped magnetic poles of the stator (403); and the rotor (402) is matched with the arc-shaped stator magnetic poles to form a closed magnetic circuit with an air gap (410); a swing bar (406) extending along a radial direction of the rotating shaft (405) connected to each of the two ends (411) of the rotating shaft (405) respectively; the light screen (2) of the car lamp low beam and high beam light switching device is fixedly connected on the swing bars (406) disposed at the two ends of the rotating shaft; and a swing angle of the light screen (2) is identical with a rotating angle of the rotor (402); the each end (411) of the rotating shaft (405) of the electromagnetic actuator (4) is respectively connected with one swing bar (406) extending along the radial direction of the rotating shaft (405); the rotary electromagnetic actuator (4) is fixedly connected to the bracket (5) through the shell (401), and connected to the lamp body (1) through the bracket (5); the light screen (2) is fixedly connected to the swing bar (406), and placed on the light axial line of the lamp associated with the car lamp low beam and high beam light switching device; an included angle between the light screen and the light axial line can be changed along with the rotating angle of the rotor (402); an outline of the light screen (2) is projected on a road to form a light model of the low beam and high beam light, the light model being changed along with the rotation of the rotor (402) between the low beam and high beam light model.