CN204166272U - For controlling the projection arrangement of height change situation - Google Patents

Abstract

The utility model discloses a kind of projection arrangement for controlling height change situation, stay pipe is provided with between wrap-up and ceiling, stay pipe and ceiling are fixed, stay pipe is provided with bearing, stay pipe is provided with micromachine, micromachine and ceiling are fixed, micromachine is connected with rotating shaft, rotating shaft and micromachine are fixed, rotating shaft and bearing are fixed, rotating shaft is wound with wire rope, wire rope one end is connected with wrap-up, wrap-up is provided with spring, spring fitting has pressure transducer, pressure transducer is towards bearing, ceiling is provided with control box, micromachine is connected with control box with pressure transducer, wrap-up is provided with height sensor, height sensor is connected with control box.This device is by arranging pressure transducer and height sensor is monitored height change and contact condition, and feedback information in time, make operating personnel can obtain height condition accurately, the safety of guard block.

Description

For controlling the projection arrangement of height change situation

Technical field

The utility model relates to a kind of device, especially relates to a kind of projection arrangement for controlling height change situation.

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, need after using to draw in, be all user's visual experience position in gathering process of putting down repeatedly for folding and unfolding degree, its particular location cannot be monitored, easily cause the collision of equipment and Roofing slab, cause device damage.

Utility model content

The purpose of this utility model is that overcoming above-mentioned existing projection arrangement gathering process of putting down repeatedly is all user's visual experience position for folding and unfolding degree, its particular location cannot be monitored, easily cause the collision of equipment and Roofing slab, cause the problem of device damage, devise a kind of projection arrangement for controlling height change situation, this device is by arranging pressure transducer and height sensor is monitored height change and contact condition, and timely feedback information, make operating personnel can obtain height condition accurately, prevent shock, the safety of guard block, solving existing projection arrangement gathering process of putting down repeatedly is all user's visual experience position for folding and unfolding degree, its particular location cannot be monitored, easily cause the collision of equipment and Roofing slab, cause the problem of device damage.

The purpose of this utility model is achieved through the following technical solutions: for controlling the projection arrangement of height change situation, 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 top end face of wrap-up is provided with two springs, the bottom of spring is all vertical with the top end face of wrap-up to be fixed, the top end face of spring is all provided with pressure transducer, pressure transducer is arranged between wire rope, pressure transducer is towards bearing and be arranged on immediately below bearing, ceiling is provided with control box, micromachine is all connected with control box with pressure transducer, the top end face of wrap-up is provided with height sensor, height sensor is connected with control box, height sensor is arranged between spring, and the top of height sensor is arranged on below pressure transducer.

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 beneficial effects of the utility model are: this device is by arranging pressure transducer and height sensor is monitored height change and contact condition; and timely feedback information; make operating personnel can obtain height condition accurately; prevent shock; the safety of guard block; solving existing projection arrangement gathering process of putting down repeatedly is all user's visual experience position for folding and unfolding degree; its particular location cannot be monitored; easily cause the collision of equipment and Roofing slab, cause the problem of device damage.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

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-control box; 11-micromachine; 12-pressure transducer; 13-spring; 14-height sensor.

Embodiment

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

Embodiment 1:

As shown in Figure 1, for controlling the projection arrangement of height change situation, 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 top end face of wrap-up 9 is provided with two springs 13, the bottom of spring 13 is all vertical with the top end face of wrap-up 9 to be fixed, the top end face of spring 13 is all provided with pressure transducer 12, pressure transducer 12 is arranged between wire rope 7, pressure transducer 12 is towards bearing 6 and be arranged on immediately below bearing 6, ceiling 3 is provided with control box 10, micromachine 11 is all connected with control box 10 with pressure transducer 12, the top end face of wrap-up 9 is provided with height sensor 14, height sensor 14 is connected with control box 10, height sensor 14 is arranged between spring 13, and the top of height sensor 14 is arranged on below pressure transducer 12.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 the 14 pairs of wrap-ups 9 of the height sensor on wrap-up 9 is monitored, and height sensor 14 can carry out expedite detection to stay pipe 5, when distance between height sensor 14 and wrap-up 9 reaches the minor increment of setting, now pressure transducer 12 contacts with bearing 6, along with reducing of distance, spring 13 compresses tighter, the pressure that pressure transducer 12 detects is larger, signal feedback is in control box 10, micromachine 11 is stopped operating, avoid causing wrap-up 9 and bearing 6, the collision of ceiling 3 or stay pipe 5, ensure to draw safety in, increase the service life, height sensor 14 by height condition feedback out, convenient operation personnel are to height change situation awareness and grasp, this device is by arranging pressure transducer and height sensor is monitored height change and contact condition, and timely feedback information, make operating personnel can obtain height condition accurately, prevent shock, the safety of guard block, solving existing projection arrangement gathering process of putting down repeatedly is all user's visual experience position for folding and unfolding degree, its particular location cannot be monitored, easily cause the collision of equipment and Roofing slab, cause the problem of device damage.

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 utility model; not any pro forma restriction is done to the utility model; every according to technology of the present utility model, method in fact to any simple modification, equivalent variations that above embodiment is done, all fall within protection domain of the present utility model.

Claims (3)

1. for controlling the projection arrangement of height change situation, 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 top end face of wrap-up (9) is provided with two springs (13), the bottom of spring (13) is all vertical with the top end face of wrap-up (9) to be fixed, the top end face of spring (13) is all provided with pressure transducer (12), pressure transducer (12) is arranged between wire rope (7), pressure transducer (12) is towards bearing (6) and be arranged on immediately below bearing (6), ceiling (3) is provided with control box (10), micromachine (11) is all connected with control box (10) with pressure transducer (12), the top end face of wrap-up (9) is provided with height sensor (14), height sensor (14) is connected with control box (10), height sensor (14) is arranged between spring (13), and the top of height sensor (14) is arranged on pressure transducer (12) below.

2. the projection arrangement for controlling height change situation according to claim 1, is characterized in that: the outer wall of described stay pipe (5) is sheathed with fixed cover (4), and fixed cover (4) is fixed with ceiling (3).

3. the projection arrangement for controlling height change situation according to claim 1, 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.