Convenient-to-adjust projector for English teaching

A projector convenient to adjust for English teaching comprises a projector body, an adjusting screw rod, a sliding block and a sliding rail. Wherein the adjusting screw rod is vertically arranged, the sliding block is installed at the bottom end of the adjusting screw rod, the sliding rail is trans...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	HE JIUHONG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ACCESSORIES THEREFOR ADVERTISING APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND,DEAF OR MUTE BLASTING CINEMATOGRAPHY CRYPTOGRAPHY DIAGRAMS DISPLAY EDUCATION EDUCATIONAL OR DEMONSTRATION APPLIANCES ELECTROGRAPHY ENGINEERING ELEMENTS AND UNITS FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GLOBES HEATING HOLOGRAPHY LIGHTING MECHANICAL ENGINEERING PHOTOGRAPHY PHYSICS PLANETARIA SEALS STANDS OR SUPPORTS THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A projector convenient to adjust for English teaching comprises a projector body, an adjusting screw rod, a sliding block and a sliding rail. Wherein the adjusting screw rod is vertically arranged, the sliding block is installed at the bottom end of the adjusting screw rod, the sliding rail is transversely installed at the top of the projector body, and the sliding block is rotatably installed inthe sliding rail; four grooves are evenly distributed in the sliding block, and a protruding block matched with the grooves is arranged in the middle of the sliding rail. Compared with the prior art,after the projector is installed, the transverse position, the horizontal position and the angle of the projector can be adjusted, and operation is convenient. Through the four grooves uniformly distributed in the sliding block, the projector can realize rapid conversion in four directions; by arranging the first screw rod and the second screw rod with different screw pitches, coarse adjustment and fine adjustment of the h