CN104330951A - System with function of ensuring projector winding and unwinding safety - Google Patents

Abstract

The invention discloses a system with a function of ensuring projector winding and unwinding safety. A supporting pipe is arranged between a winding device and a ceiling and is fixed on the ceiling. The supporting pipe is provided with a bearing and fixedly connected with an outer ring of the bearing. The supporting pipe is also provided with a micro motor which is fixed on the ceiling. The micro motor is connected with a rotating shaft. The rotating shaft is fixedly connected with the micro motor, and extends into the supporting pipe after being fixedly connected with an inner ring of the bearing. A steel wire rope winds on the rotating shaft, and one end of the steel wire rope is connected with the winding device. A height sensor facing the winding device is installed on the bearing, and is connected with a buzzer and a flashlight. A data line is connected onto the height sensor and is connected with the micro motor. The system monitors the winding and unwinding positions of a projection screen through the height sensor, enables the operators to stop winding and unwinding before the projection screen reaches the winding and unwinding extreme positions, avoids collision of parts, and accordingly protects safety of the parts.

Description

There is the system ensureing projector folding and unfolding security functions

Technical field

The present invention relates to a kind of system, especially relate to a kind of system with guarantee projector folding and unfolding security functions.

Background technology

Projector is also known as projector, and current shadow casting technique makes rapid progress, and along with the development of science and technology, projection industry has also developed into the paramount field of a micro-throwing new technology.Projector is a kind of precise electronic product, it integrates machinery, liquid crystal or DMD, electronic circuit technology, therefore in use to be noted (for liquid crystal projector) from the following aspects: mechanical aspects, be strictly on guard against strong collision, extruding and vibrations.Because macroseism can cause the displacement of LCD panel, the convergence of three LCD during impact projection, there is the phenomenon that RGB color does not overlap, and the lens in optical system, catoptron also can produce distortion or damage, and effect diagram is as drop shadow effect, and zoom lens can make rail damage under impact, cause camera lens stuck, even camera lens breaks and cannot use.Optical system, notes the dust-proof and ventilation and heat of environment for use.The polysilicon LCD plate of current use generally only has 1.3 inches, and what have even only has 0.9 inch, and resolution has reached 1024X768 or 800X600, and that is each pixel only has 0.02mm, and dust granule enough stops it.And generally have special fan to carry out air-supply cooling with the flow of tens litres of air per minute to it because projector LCD plate fully dispels the heat, high velocity air also likely carries small dust secretly after dirt filtrating screen, they mutually rub and produce electrostatic and be adsorbed in cooling system, and this will have an impact to projected picture.Therefore, dust-proof extremely important in projector's environment for use, must absolutely no smoking, because smokeshade is more easily adsorbed in optical system.Therefore dirt filtrating screen that is frequent or periodic cleaning air inlet is wanted.Lamp source part, at present, most of projector uses metal halid lamp, and when illuminating state, bulb side voltage about 60-80V, in bulb, gaseous tension is greater than 10kg/cm, and temperature then has thousands of degree, and filament is in fritting state.Therefore, forbid to shake under open state, move projector; prevent bulb from bursting; can not at once deenergization after stopping using, machine be allowed to have dispelled the heat rear auto stop, and to be that projector is modal reprocess one of reason in the damage caused in the power-off of machine radiating state.In addition, switching on and shutting down number of times is reduced useful to bulb life.Circuit part, forbids warm swap cable, signal source and projector's power supply preferably ground connection simultaneously.This be due to be connected with signal source (as PC) when projector be different electrical power time, higher potential difference (PD) may be there is between two zero lines.When user's warm swap signal wire or other circuit, spark phenomenon can be there is between plugs and sockets, damage signal input circuit, cause serious consequence thus.In use, there is larger distance in projector between some user request signal source and projector, and all apart from signal source more than 15 meters as the projector of lifting, at this moment corresponding signal cable must extend.The signal of input projector can be caused thus to decay, and can there is the phenomenon that fuzzy hangover is even shaken in the picture projected out.This Bu Shi projector breaks down, and also can not damage machine.The best approach addressed this problem is after signal source, install a signal amplifier additional, can ensure Signal transmissions more than 20 meters and out of question.Need when the projection screen of projector uses to put down, needing after using to draw in, is all user's visual experience height in gathering process of putting down repeatedly for folding and unfolding degree, just there will be folding and unfolding extreme position when energy is not concentrated, make the impact to parts, make being damaged of system.

Summary of the invention

The object of the invention is to overcome above-mentioned existing projecting apparatus system and the folding and unfolding process of projection screen is existed to the impact to system, and cause the problem that system unit damages, devise a kind of system with guarantee projector folding and unfolding security functions, this system is monitored by its stored position of setting height(from bottom) sensor to projection screen, make operating personnel can stop folding and unfolding before folding and unfolding extreme position arrives, collision between peventing member, the safety of guard block, solve existing projecting apparatus system and the folding and unfolding process of projection screen is existed to the impact to system, and cause the problem that system unit damages.

Object of the present invention is achieved through the following technical solutions: have the system ensureing projector folding and unfolding security functions, the wrap-up comprising ceiling and be arranged on below ceiling and projection screen, the top of described projection screen is arranged in wrap-up, inner hollow is provided with and the stay pipe of both ends open between described wrap-up and ceiling, the center line of stay pipe is parallel with horizontal line, stay pipe and ceiling are fixed, the two ends of stay pipe are provided with bearing, and the outer ring of stay pipe and bearing is fixed, the two ends of stay pipe are provided with micromachine, micromachine and ceiling are fixed, micromachine is all connected with rotating shaft, rotating shaft is arranged between micromachine and the bearing of correspondence, rotating shaft one end and micromachine are fixed, stretch in stay pipe after the inner ring of the other end and bearing is fixing, the axis of rotating shaft and the dead in line of stay pipe, the outer wall of rotating shaft is wound with wire rope, wire rope one end is connected with wrap-up, the outer wall of the outer ring of bearing is all provided with height sensor, height sensor is towards wrap-up and within the scope of the end face of wrap-up, height sensor is connected with honey device and flashlamp, honey device and flashlamp are installed on the outer wall of stay pipe, height sensor is connected with data line, data line one end is connected with height sensor, the other end connects with corresponding micromachine.

The outer wall of described stay pipe is sheathed with fixed cover, and fixed cover and ceiling are fixed.

Be provided with web joint between described micromachine and ceiling, web joint is fixed with micromachine and ceiling simultaneously.

In sum; the invention has the beneficial effects as follows: this system is monitored by its stored position of setting height(from bottom) sensor to projection screen; make operating personnel can stop folding and unfolding before folding and unfolding extreme position arrives; collision between peventing member; the safety of guard block; solve existing projecting apparatus system and the folding and unfolding process of projection screen is existed to the impact to system, and the problem causing system unit to damage.

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention.

Mark and corresponding parts title in accompanying drawing: 1-web joint; 2-rotating shaft; 3-ceiling; 4-fixed cover; 5-stay pipe; 6-bearing; 7-wire rope; 8-projection screen; 9-wrap-up; 10-height sensor; 11-micromachine; 12-honey device; 13-flashlamp.

Embodiment

Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited only to this.

Embodiment 1:

As shown in Figure 1, there is the system ensureing projector folding and unfolding security functions, the wrap-up 9 comprising ceiling 3 and be arranged on below ceiling 3 and projection screen 8, the top of described projection screen 8 is arranged in wrap-up 9, inner hollow is provided with and the stay pipe 5 of both ends open between described wrap-up 9 and ceiling 3, the center line of stay pipe 5 is parallel with horizontal line, stay pipe 5 is fixed with ceiling 3, the two ends of stay pipe 5 are provided with bearing 6, and stay pipe 5 is fixed with the outer ring of bearing 6, the two ends of stay pipe 5 are provided with micromachine 11, micromachine 11 is fixed with ceiling 3, micromachine 11 is all connected with rotating shaft 2, rotating shaft 2 is arranged between the bearing 6 of micromachine 11 and correspondence, rotating shaft 2 one end and micromachine 11 are fixed, stretch in stay pipe 5 after the inner ring of the other end and bearing 6 is fixing, the axis of rotating shaft 2 and the dead in line of stay pipe 5, the outer wall of rotating shaft 2 is wound with wire rope 7, wire rope 7 one end is connected with wrap-up 9, the outer wall of the outer ring of bearing 6 is all provided with height sensor 10, height sensor 10 is towards wrap-up 9 and within the scope of the end face of wrap-up 9, height sensor 10 is connected with honey device 12 and flashlamp 13, honey device 12 and flashlamp 13 are installed on the outer wall of stay pipe 5, height sensor 10 is connected with data line, data line one end is connected with height sensor 10, the other end connects with corresponding micromachine 11.Wrap-up 9 is existing equipment, inside has living space and to be drawn in by projection screen 8, after projection screen 8 is released suitable distance by user, micromachine 11 rotates and makes rotating shaft 2 along with rotation, be wrapped in wire rope 7 length variations in rotating shaft 2, make the height change of wrap-up 9 and projection screen 8, reach the best line-of-sight height of use, because the height of ceiling 3 is different, wrap-up 9 is highly also different in pulling of wire rope 7, when operating personnel are absent minded, the collision of wrap-up 9 and ceiling 3 or stay pipe 5 will be caused, because parts are all precise parts, clash into the destruction of easily causing inner structure, impact runs, and the bearing 6 that native system is arranged can bear the rotation situation of rotating shaft 2, and the distance change between height sensor 10 pairs of wrap-ups 9 is monitored, stretch out during the bottom of height sensor 10 below the bottom of bearing 6 or stay pipe 5, and height sensor 10 can carry out expedite detection to stay pipe 5, when distance between height sensor 10 and wrap-up 9 reaches the minor increment of setting, the honey device 12 that height sensor 10 connects and flashlamp 13 start to pipe and glisten, operating personnel are reminded to arrive critical conditions, ensure to draw safety in, increase the service life, this system is monitored by its stored position of setting height(from bottom) sensor to projection screen, make operating personnel can stop folding and unfolding before folding and unfolding extreme position arrives, collision between peventing member, the safety of guard block, solve existing projecting apparatus system and the folding and unfolding process of projection screen is existed to the impact to system, and cause the problem that system unit damages.

The outer wall of described stay pipe 5 is sheathed with fixed cover 4, and fixed cover 4 is fixed with ceiling 3; Be provided with web joint 1 between described micromachine 11 and ceiling 3, web joint 1 is fixed with micromachine 11 and ceiling 3 simultaneously.Fixed cover 4 adopts metal ring texture, its inner ring diameter is identical with the diameter of stay pipe 5, and fix in the center of stay pipe 5, make stay pipe 5 can keep stable, web joint 1 is fixed on ceiling 3 by micromachine 11, makes to keep the stable of whole system during work.

The above; it is only preferred embodiment of the present invention; not any pro forma restriction is done to the present invention, every according to technology of the present invention, method in fact to any simple modification, equivalent variations that above embodiment is done, all fall within protection scope of the present invention.

Claims (3)

1. there is the system ensureing projector folding and unfolding security functions, comprise ceiling (3) and be arranged on wrap-up (9) and the projection screen (8) of ceiling (3) below, the top of described projection screen (8) is arranged in wrap-up (9), it is characterized in that: be provided with inner hollow between described wrap-up (9) and ceiling (3) and the stay pipe of both ends open (5), the center line of stay pipe (5) is parallel with horizontal line, stay pipe (5) is fixed with ceiling (3), the two ends of stay pipe (5) are provided with bearing (6), and stay pipe (5) is fixed with the outer ring of bearing (6), the two ends of stay pipe (5) are provided with micromachine (11), micromachine (11) is fixed with ceiling (3), micromachine (11) is all connected with rotating shaft (2), rotating shaft (2) is arranged between micromachine (11) and corresponding bearing (6), rotating shaft (2) one end and micromachine (11) are fixed, stretch in stay pipe (5) after the inner ring of the other end and bearing (6) is fixing, the axis of rotating shaft (2) and the dead in line of stay pipe (5), the outer wall of rotating shaft (2) is wound with wire rope (7), wire rope (7) one end is connected with wrap-up (9), the outer wall of the outer ring of bearing (6) is all provided with height sensor (10), height sensor (10) is towards wrap-up (9) and within the scope of the end face of wrap-up (9), height sensor (10) is connected with honey device (12) and flashlamp (13), honey device (12) and flashlamp (13) are installed on the outer wall of stay pipe (5), (10) are connected with data line with height sensor, data line one end is connected with height sensor (10), the other end connects with corresponding micromachine (11).

2. according to claim 1 have the system ensureing projector folding and unfolding security functions, and it is characterized in that: the outer wall of described stay pipe (5) is sheathed with fixed cover (4), fixed cover (4) is fixed with ceiling (3).

3. according to claim 1 have the system ensureing projector folding and unfolding security functions, it is characterized in that: be provided with web joint (1) between described micromachine (11) and ceiling (3), web joint (1) is fixed with micromachine (11) and ceiling (3) simultaneously.