Movable shade mechanism for vehicle headlight, and vehicle headlight

Patent metadata

Field	Value
Publication number	US-11739903-B2
Application number	US-202017773549-A
Country	US
Kind code	B2
Filing date	Oct 23, 2020
Priority date	Oct 30, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

A movable shade mechanism for a vehicular headlight and a vehicular headlight capable of reducing the entire weight while enhancing rigidity of a bracket is provided. A movable shade mechanism for a vehicular headlight includes a shade member rotating around a rotary shaft and adjusting a shielding amount of light from a light source, a drive unit to generate power to drive the shade member, a transmission member to transmit power of the drive unit to the shade member, and a plate bracket to hold the rotary shaft and the drive unit, wherein the bracket includes a base that is disposed along a horizontal plane in a vehicle-mounted state and supports the drive unit, and a shade support that is bent upwardly from a rear end of the base in the vehicle-mounted state and supports the rotary shaft.

First claim

The invention claimed is:

1. A movable shade mechanism for a vehicular headlight comprising:
a shade member rotating around a rotary shaft and adjusting a shielding amount of light from a light source;
a drive unit to generate power to drive the shade member;
a transmission member to transmit power of the drive unit to the shade member; and
a plate bracket to hold the rotary shaft and the drive unit,
wherein the bracket includes:
a base that is disposed along a horizontal plane in a vehicle-mounted state and supports the drive unit; and
a shade support that is bent upwardly from a rear end of the base in the vehicle-mounted state and supports the rotary shaft.

2. The movable shade mechanism for a vehicular headlight according to claim 1 , wherein
the bracket includes a reinforcement part that is bent downwardly from a front end of the base.

3. The movable shade mechanism for a vehicular headlight according to claim 1 , wherein
the base has an attachment part extending outwardly in a left-right direction in the vehicle-mounted state.

4. The movable shade mechanism for a vehicular headlight according to claim 1 , wherein
the base has an opening that penetrates through the base in an up-down direction in the vehicle-mounted state, and
the transmission member passes through the opening in the up-down direction to be disposed.

5. The movable shade mechanism for a vehicular headlight according to claim 4 further comprising
a cover member that is mounted on the base and covers the opening.

6. The movable shade mechanism for a vehicular headlight according to claim 1 , wherein
the drive unit has a case,
the case has a shape that a plate member is bent in a front-rear direction and a left-right direction in the vehicle-mounted state, and has a plurality of protrusions to be mated with the base on a top of the case in an up-down direction,
at least one or more of the plurality of protrusions are provided at a position where the front-rear direction is a plate thickness direction as well as a position where the left-right direction is the plate thickness direction, on the top of the case, and
the base has mating holes which the plurality of protrusions are inserted into.

7. A vehicular headlight comprising:
a light source; and
the movable shade mechanism for a vehicular headlight according to claim 1 , which controls light distribution of light from the light source.

Assignees

• Ichikoh Industries Ltd

Inventors

• Abe Toshiya

Classifications

• F21S41/683 Primary

  by moving screens · CPC title

• F21S41/43

  characterised by the shape thereof · CPC title

• F21S41/47

  Attachment thereof (achieving variable light distribution by movable screens F21S41/683) · CPC title

• F21S41/29 Primary

  Attachment thereof (for achieving variable light distribution F21S41/63) · CPC title

• F21S41/148 Primary

  the main emission direction of the LED being perpendicular to the optical axis · CPC title