US Patent No. 10,989,991

ADJUSTMENT DEVICE AND PROJECTION DEVICE USING THE SAME


Patent No. 10,989,991
Issue Date April 27, 2021
Title Adjustment Device And Projection Device Using The Same
Inventorship Yun-Sheng Wang, Hsin-Chu (TW)
Mao-Min Fu, Hsin-Chu (TW)
Yen-Po Chang, Hsin-Chu (TW)
Chien-Ming Peng, Hsin-Chu (TW)
Assignee Coretronic Corporation, Hsin-Chu (TW)

Claim of US Patent No. 10,989,991

1. An adjustment device for adjusting an up-down displacement of an optical engine module of a projection device, comprising a bracket, at least one adjustment zone, at least one flexible element, at least one adjustment element, and at least one fixing post, wherein:the bracket is disposed inside the projection device;
the at least one adjustment zone is located at the optical engine module, wherein there is a gap between the optical engine module and the bracket;
the at least one flexible element is abutted between the bracket and the optical engine module; and
the at least one adjustment element is movably disposed through the at least one adjustment zone, and a distance between the at least one adjustment zone of the optical engine module and the bracket is at least adjusted by an operation of the at least one adjustment element;
the at least one fixing post disposed on the bracket and located between the bracket and the at least one adjustment zone,
wherein the optical engine module comprises a fixing base, the at least one adjustment zone is located at the fixing base, the gap is formed between the fixing base and the bracket, and the at least one flexible element is abutted between the bracket and the fixing base,
wherein each of the at least one adjustment element comprises an adjustment screw, the adjustment screw includes a head portion and a thread body, the thread body is connected to the head portion, each of the at least one adjustment zone of the fixing base includes a first surface and a second surface opposite to each other, the second surface faces the bracket, and each of the at least one adjustment zone is provided with a through hole penetrating the first surface and the second surface,
wherein each of the at least one fixing post is provided with a second screw hole at least penetrating one end of the at least one fixing post adjacent to the at least one adjustment zone, the second screw hole corresponds to the through hole, the thread body of the adjustment screw is disposed through the through hole and screwed to at least a part of the second screw hole, and the head portion is abutted against the first surface.