CN109188845B

CN109188845B - Film protection projection curtain

Info

Publication number: CN109188845B
Application number: CN201811054074.8A
Authority: CN
Inventors: 陈浩; 曾俊
Original assignee: Anhui Guoyao Communication Technology Co ltd
Current assignee: Anhui Guoyao Communication Technology Co ltd
Priority date: 2018-09-11
Filing date: 2018-09-11
Publication date: 2020-12-08
Anticipated expiration: 2038-09-11
Also published as: CN109188845A

Abstract

The invention discloses a film protection projection curtain, which comprises a box body, a projection curtain, a cross rod and a film, wherein a first motor and a second motor are arranged on one side of the box body, one side of the cross rod penetrates through a partition plate and is connected with the first motor, the other side of the cross rod is connected with a first bearing seat, the projection curtain is wound on the cross rod, a rotating shaft is arranged on one side of the second motor, the other side of the rotating shaft is connected with a second bearing seat, a hollow cross rod is arranged on the outer side of the rotating shaft, third bearing seats are arranged on two sides of the hollow cross rod, gear seats are arranged on two sides of the rotating shaft, through holes corresponding to the gear seats are formed in the lower end of the hollow cross rod, one end of the film is connected with the hollow cross rod, a film end shaft. The invention avoids the dust pollution of the projection curtain by shielding the writing board or the blackboard by the film, and the sponge at the lower end of the box body can clean the retracted and extended projection curtain, thereby ensuring the use effect and the use quality of the projection curtain.

Description

Film protection projection curtain

Technical Field

The invention relates to the technical field of projection screens, in particular to a film protection projection screen.

Background

At present, along with the progress of science and technology, the projection curtain is extensively used for the power, official working, home theater and large-scale meeting occasion, be used for displaying images, the instrument of video file, the projection curtain that uses at present mostly is fixed hang with indoor or meeting room in, often hang in the board, the top of blackboard, when the projection curtain is opened, the projection curtain can be infected with the dust on board or the blackboard at the back, cause the pollution for the projection curtain, influence life and quality of use, the projection curtain also needs often to clean in the rolling process to improve result of use and quality simultaneously.

Disclosure of Invention

The invention mainly aims to provide a film protection projection curtain, which avoids a large amount of dust pollution to the projection curtain by shielding chalk dust on a writing board or a blackboard through a film, and meanwhile, sponges at two ends below the projection curtain can clean the projection curtain when the projection curtain is contracted and extended, so that the using effect and the using quality of the projection curtain are ensured. The invention can effectively solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

a film protection projection curtain comprises a box body, a projection curtain, a cross rod and a film, wherein a first motor and a second motor are arranged on one side of the interior of the box body, a partition plate is arranged on one side of the first motor and the second motor, one side of the cross rod penetrates through the partition plate to be connected with the first motor, the other side of the cross rod is connected with a first bearing seat, the projection curtain is wound on the cross rod, a curtain end shaft is arranged at the lower end of the projection curtain, a rotating shaft is arranged on one side of the second motor, one side of the rotating shaft penetrates through the partition plate to be connected with the second motor, the other side of the rotating shaft is connected with a second bearing seat, a hollow cross rod is arranged on the outer side of the rotating shaft, third bearing seats are arranged on two sides of the hollow cross rod, gear seats are arranged on two sides of the rotating shaft, through holes corresponding to the gear seats are arranged at the, the other end of the film is provided with a film end shaft, and the film end shaft is connected with the gear seat through a synchronous belt.

Further, the box body is located the below of horizontal pole and is equipped with the reel, the both sides of reel are passed through bracing piece and box body fixed connection, the outside of reel is equipped with the sponge, the reel passes through sponge and projection curtain frictional contact.

Further, the rotating shaft is positioned in the inner part of the hollow cross rod and outside the inner shaft.

Further, the area of the film is larger than that of the projection screen.

Furthermore, the synchronous belt is a synchronous belt with gears clamped with each other on two sides.

Furthermore, guard plates are arranged on two sides of the gear seat.

The working principle is as follows: during the use, rotate the pivot through the second motor earlier and extend the back with the film, first motor rotates and extends the projection curtain downwards, when using the end, on the horizontal pole in the box body is contract with the projection curtain through first motor reversal earlier, restart the second motor and rotate the pivot, the pivot is rotatory to take whole contractions of synchronizing wheel to the pinion stand on, film end shaft and hollow horizontal pole contact this moment, the film is by the fifty percent discount, when the pivot is rotatory again, through film end shaft drive hollow horizontal pole with the film rolling after the fifty percent discount on hollow horizontal pole.

Has the advantages that: avoided dust pollution projection curtain on blackboard or the board, the film is earlier by the fifty percent discount when the rolling, will not receive the one side fifty percent discount of dust pollution at the inboard, the inboard film can not receive the pollution of outside film and can continue to protect the projection curtain when the film rolling, the availability factor of film has been improved, the dust is easily wiped away to the film simultaneously, the rate of utilization is high, the sponge of projection curtain below also can be when projection curtain rolling with extend clean the projection curtain, guarantee projection curtain life and result of use.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the interior of the case according to the present invention.

FIG. 3 is a schematic view of the structure of the rotating shaft and the hollow cross bar of the present invention.

Figure 4 is a side view of the spool structure of the present invention.

FIG. 5 is an enlarged view of the invention at A.

In the figure: 1, a box body; 2, protecting plates; 3, a projection curtain; 4 curtain end shaft; 5 a film end shaft; 6, synchronizing the belt; 7 a film; 8 a second motor; 9 a first motor; 10 a partition board; 11 supporting rods; 12 a cross bar; 13 a hollow cross-bar; 14 a first bearing seat; 15 a third bearing seat; 16 rotating shafts; 17 a second bearing housing; 18 gear seats; 19 a through hole; 20, sponge; 21, winding the drum.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1, 2 and 3, a film protection projection curtain comprises a box body 1, a projection curtain 3, a cross bar 12 and a film 7, wherein a first motor 9 and a second motor 8 are arranged on one side inside the box body 1, a partition plate 10 is arranged on one side of the first motor 9 and one side of the second motor 8, one side of the cross bar 12 penetrates through the partition plate 10 to be connected with the first motor 9, the other side of the cross bar 12 is connected with a first bearing seat 14, the projection curtain 3 is wound on the cross bar 12, a curtain end shaft 4 is arranged at the lower end of the projection curtain 3, a rotating shaft 16 is arranged on one side of the second motor 8, one side of the rotating shaft 16 penetrates through the partition plate 10 to be connected with the second motor 8, the other side of the rotating shaft 16 is connected with a second bearing seat 17, a hollow cross bar 13 is arranged on the outer side of the rotating shaft 16, third bearing seats 15 are arranged on two sides of the hollow cross bar 13, gear seats, the lower end of the hollow cross rod 16 is provided with a through hole 19 corresponding to the gear seat 18, one end of the film 7 is connected with the hollow cross rod 13, the other end of the film 7 is provided with a film end shaft 5, and the film end shaft 5 is connected with the gear seat 18 through the synchronous belt 6.

Wherein, box body 1 is located the below of horizontal pole 12 and is equipped with reel 21,

bracing piece

11 and 1 fixed connection of box body are passed through to the both sides of reel 21, the outside of reel 21 is equipped with sponge 20, reel 21 passes through

sponge

20 and 3 frictional contact of projection curtain, and when 3 extensions of projection curtain and shrink, sponge 20 of 1 lower extreme of box body can clean projection curtain 3, improves 3 life and the result of use of projection curtain.

The rotating shaft 16 is located in the inner portion of the hollow cross rod 13 and axially outward, the upper end of the film 7 is connected with the hollow cross rod 13, the hollow cross rod 13 and the film 7 are kept in a vertical state under the action of gravity, and the rotating shaft 16 is located in the inner portion of the hollow cross rod 13 and axially outward, so that mutual blocking between the synchronous pulley belt 6 and the film 7 during contraction is avoided.

The area of the film 7 is larger than that of the projection screen 3, so that the film 7 can block dust, and the projection screen 3 can be effectively protected.

Wherein, synchronous wheel area 6 all is equipped with the synchronous wheel area of mutual joint gear for both sides, and when the rolling, synchronous wheel area 6 both sides gear mutual joint shrink together, and until film end shaft 5 shrink hollow horizontal pole 13 department, pivot 16 drives hollow horizontal pole 13 and rotates, with the rolling of film 7 on hollow horizontal pole 13, when pivot 16 counter-rotation, pivot 16 can drive hollow horizontal pole 13 through the last gear of synchronous wheel area 6 and rotate, extends film 7.

The two sides of the gear seat 18 are provided with the guard plates 2, and when the rotating shaft 16 rotates to roll the synchronous belt 6, the guard plates 2 protect the synchronous belt 6, so that scattering of the synchronous belt 6 in the rolling process is avoided.

Example (b): during the use, rotate the pivot 16 through the second motor 8 earlier and extend the back with film 7, first motor 9 rotates and extends projection curtain 3 downwards, when using, contract projection curtain 3 to the horizontal pole 12 in the box body 1 through the reversal of first motor 9 earlier, restart second motor 8 and rotate pivot 16, pivot 16 is rotatory to contract synchronous pulley belt 6 on the pinion stand 18 totally, film end shaft 5 and hollow horizontal pole 13 contact this moment, film 7 is the fifty percent discount, when pivot 16 is rotatory again, drive hollow horizontal pole 13 through film end shaft 5 and roll up film 7 after the fifty percent discount on hollow horizontal pole 13.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. The utility model provides a film protection projection curtain, includes box body, projection curtain, horizontal pole, film, its characterized in that: one side of the interior of the box body is provided with a first motor and a second motor, one side of the first motor and the second motor is provided with a baffle plate, one side of a transverse rod penetrates through the baffle plate to be connected with the first motor, the other side of the transverse rod is connected with a first bearing seat, a projection curtain is wound on the transverse rod, the lower end of the projection curtain is provided with a curtain end shaft, one side of the second motor is provided with a rotating shaft, one side of the rotating shaft penetrates through the baffle plate to be connected with the second motor, the other side of the rotating shaft is connected with a second bearing seat, the outer side of the rotating shaft is provided with a hollow transverse rod, the rotating shaft is positioned at the middle part of the hollow transverse rod and is axially outward, the two sides of the hollow transverse rod are provided with third bearing seats, the two sides of the rotating shaft are provided with gear seats, the lower end of the hollow transverse rod is provided with through holes, the film end shaft is connected with the gear seat through a synchronous belt.

2. A film protective projection curtain as recited in claim 1, wherein: the box body is located the below of horizontal pole and is equipped with the reel, the both sides of reel are passed through bracing piece and box body fixed connection, the outside of reel is equipped with the sponge, the reel passes through sponge and projection curtain frictional contact.

3. A film protective projection curtain as recited in claim 1, wherein: the area of the film is larger than that of the projection screen.

4. A film protective projection curtain as recited in claim 1, wherein: the synchronous belt is a synchronous belt with gears clamped on two sides.

5. A film protective projection curtain as recited in claim 1, wherein: guard plates are arranged on two sides of the gear seat.