Projector placing frame for teaching

A technology for placing racks and projectors, applied to projection devices, optics, instruments, etc., can solve the problems of inaccurate angle adjustment, cumbersome operation, and poor practicability, so as to avoid excessive temperature and make the adjustment work accurate and convenient , the effect of convenient operation

CN108533905AInactive Publication Date: 2018-09-14CHENGDU YANXINGGUO TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2018-09-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a projector placing frame for teaching. The frame comprises a hollow-out plate and a fixed shell, and the hollow-out plate is movably connected with the fixed shell; and limiting plates are vertically welded on the four side edges of the top of the hollow-out plate, and a fixed shaft is arranged at the bottom of the hollow-out plate. According to the frame, firstly, a rotary knob is rotated, a rotary shaft rotates and drives a second gear to rotate, the second gear drives a first gear to rotate, so that the purpose of adjusting the placing angle of the projector is achieved; meanwhile, a third gear can drive a fourth gear to rotate, and under the action of an one-way bearing, only one-way rotation can be carried out by the fourth gear, so that the projector adjustedthe angle cannot be reset again, and the adjusting work becomes more accurate and more convenient; when the projector needs to be reset, a sliding block is pushed downwards by force, so that the fourth gear is separated from the third gear; and at the moment, the projector can be reset under the action of the gravity of the projector; the structure is compact and reasonable, the operation is convenient, and the angle adjusting precision is high.
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Description

technical field

[0001] The invention relates to the technical field of teaching equipment, in particular to a teaching projector placement rack. Background technique

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play the corresponding video signal. Projectors are currently widely used in homes, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP.

[0003] At present, the projector stand for teaching is simple in structure, single in function, not strong in practicability, inaccurate in angle adjustment process, and cumbersome in operation process. Contents of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a projector placement rack for teaching. [0005...

Examples

Embodiment Construction

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0022] refer to Figure 1-3 , a projector placement rack for teaching, comprising a hollow plate 2 and a fixed housing 13, and the hollow plate 2 is movably connected to the fixed shell 13, and the four sides of the top of the hollow plate 2 are vertically welded with a limit plate 1, The bottom of the hollow plate 2 is provided with a fixed shaft 3, and the center position of the fixed shaft 3 is welded with a first gear 4, and the bottom of the first gear 4 is meshed with a second gear 5, and the second gear 5 is connected to the fixed shaft through the rotating shaft 6. The inner surface walls on both sides of the housing 13 are movably connected, the third gear 7...