CN211470400U

CN211470400U - Prevent projection curtain of fold during rolling

Info

Publication number: CN211470400U
Application number: CN201922464944.5U
Authority: CN
Inventors: 雷印军
Original assignee: Wuhan Yintian Technology Engineering Co ltd
Current assignee: Wuhan Yintian Technology Engineering Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-09-11
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a prevent projection curtain of fold during rolling. Prevent the projection curtain of fold during the rolling includes: a long box; the motor is fixedly arranged on the inner wall of one side of the long box; the winding rod is fixedly and rotatably arranged in the long box, and one end of the winding rod is fixedly connected with an output shaft of the motor; the curtain is wound on the winding rod, and the bottom end of the curtain extends out of the long box; the two box bodies are fixedly arranged at the bottom of the long box; the two positioning rods are respectively and fixedly arranged in the corresponding box bodies; the four sliding blocks are respectively installed on the corresponding positioning rods in a sliding manner; and the four springs are respectively sleeved on the corresponding positioning rods in a sliding manner. The utility model provides a prevent projection curtain of fold during rolling has convenient to use, can smooth out the advantage of the order with the curtain when the curtain rolling.

Description

Prevent projection curtain of fold during rolling

Technical Field

The utility model relates to a projection curtain technical field especially relates to a prevent projection curtain of fold during rolling.

Background

A projection screen is a tool used in movies, offices, home theaters, large conferences, etc. for displaying images and video files, and generally, a picture is projected onto the projection screen by a camera for display, and the projection screen is rolled up when not applicable in order to protect the projection screen.

However, in the prior art, when the projection curtain is rolled, the rolling of the curtain may be uneven due to the rolling angle and other problems, and the curtain is wrinkled, which affects the use effect of the projection curtain, and therefore, it is necessary to provide a new projection curtain for preventing wrinkles during rolling to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the utility model is to provide a projection curtain of fold is prevented when rolling that convenient to use, can smooth out the curtain in the same direction as with the curtain when the curtain rolling.

In order to solve the technical problem, the utility model provides a prevent projection curtain of fold during rolling includes: a long box; the motor is fixedly arranged on the inner wall of one side of the long box; the winding rod is fixedly and rotatably arranged in the long box, and one end of the winding rod is fixedly connected with an output shaft of the motor; the curtain is wound on the winding rod, and the bottom end of the curtain extends out of the long box; the two box bodies are fixedly arranged at the bottom of the long box; the two positioning rods are respectively and fixedly arranged in the corresponding box bodies; the four sliding blocks are respectively installed on the corresponding positioning rods in a sliding manner; the four springs are sleeved on the corresponding positioning rods in a sliding manner, one ends of the springs are in contact with the inner wall of one side of the box body, and the other ends of the springs are in contact with the corresponding sliding blocks; the four rotating shafts are respectively and rotatably arranged on the corresponding sliding blocks; two ends of the two round rods extend into the corresponding box bodies respectively and are fixedly connected with the corresponding rotating shafts, and one side, close to each other, of the two round rods is in contact with the curtain.

Preferably, the inner wall of the bottom of the long box is provided with a first sliding hole, and the curtain is connected with the first sliding hole in a sliding manner.

Preferably, a second sliding hole is formed in the sliding block, and the positioning rod is connected with the second sliding hole in a sliding mode.

Preferably, a third sliding hole is formed in the inner wall of one side of the box body, and the two round rods are connected with the third sliding hole in a sliding mode.

Preferably, a rotating groove is formed in the sliding block, and the rotating shaft is rotatably connected with the rotating groove.

Preferably, the bottom fixed mounting of curtain has the weight pole, fixed cover is equipped with two spacing plectanes on the pole of rolling up.

Compared with the prior art, the utility model provides a prevent projection curtain of fold during rolling has following beneficial effect:

the utility model provides a prevent projection curtain of fold during rolling cooperatees through motor and rolling pole to realized cooperating through locating lever, sliding block, spring, axis of rotation and round bar to the rolling work of curtain, can prevent that the curtain from producing the fold when the rolling.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of a fold-preventing projection curtain according to the present invention;

fig. 2 is a schematic top sectional view of the present invention.

Reference numbers in the figures: 1. the device comprises a long box, 2, a motor, 3, a winding rod, 4, a curtain, 5, a box body, 6, a positioning rod, 7, a sliding block, 8, a spring, 9, a rotating shaft, 10 and a round rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Please refer to fig. 1 and fig. 2 in combination, wherein fig. 1 is a schematic structural diagram of a preferred embodiment of a fold-proof projection curtain according to the present invention; fig. 2 is a schematic top sectional view of the present invention. Prevent projection curtain of fold during rolling includes: an elongated box 1; the motor 2 is fixedly arranged on the inner wall of one side of the long box 1; the winding rod 3 is fixedly and rotatably arranged in the long box 1, and one end of the winding rod 3 is fixedly connected with an output shaft of the motor 2; the curtain 4 is wound on the winding rod 3, and the bottom end of the curtain 4 extends out of the long box 1; the two box bodies 5 are fixedly arranged at the bottom of the long box 1; the two positioning rods 6 are respectively and fixedly arranged in the corresponding box bodies 5; the four sliding blocks 7 are respectively arranged on the corresponding positioning rods 6 in a sliding manner; the four springs 8 are sleeved on the corresponding positioning rods 6 in a sliding manner, one end of each spring 8 is in contact with the inner wall of one side of the box body 5, and the other end of each spring 8 is in contact with the corresponding sliding block 7; the four rotating shafts 9 are respectively and rotatably arranged on the corresponding sliding blocks 7; two round bars 10, the both ends of two round bars 10 extend to respectively in the box body 5 that corresponds and with corresponding axis of rotation 9 fixed connection, and one side that two round bars 10 are close to each other contacts with curtain 4.

The inner wall of the bottom of the long box 1 is provided with a first sliding hole, and the curtain 4 is connected with the first sliding hole in a sliding manner.

A second sliding hole is formed in the sliding block 7, and the positioning rod 6 is connected with the second sliding hole in a sliding mode.

A third sliding hole is formed in the inner wall of one side of the box body 5, and the two round rods 10 are connected with the third sliding hole in a sliding mode.

The sliding block 7 is provided with a rotating groove, and the rotating shaft 9 is rotatably connected with the rotating groove.

The bottom fixed mounting of curtain 4 has the weight pole, fixed cover is equipped with two spacing plectanes on the pole 3 of rolling up.

The utility model provides a prevent projection curtain of fold during rolling's theory of operation as follows:

during the use, starter motor 2, motor 2 drives winding rod 3 through the output shaft and rotates, winding rod 3 begins rolling curtain 4 through rotating, curtain 4 is in the centre gripping in the middle of two round bars 10, under spring 8's promotion, two pairs of sliding blocks 7 drive two round bars 10 through axis of rotation 9 and carry out the centre gripping to curtain 4, make fold on the curtain 4 when the rolling rises floating by two round bars 10, because round bar 10 can be pivoted, so curtain 4 can not cause too big resistance when the rolling rises, and the weight bar of curtain 4 bottom has the aggravation, can be when emitting curtain 4, supplementary curtain 4 expandes.

the utility model provides a prevent projection curtain of fold during rolling cooperatees through motor 2 and winding rod 3 to realized cooperating through locating lever 6, sliding block 7, spring 8, axis of rotation 9 and round bar 10 to the rolling work of curtain 4, can prevent that curtain 4 from producing the fold when the rolling.

It should be noted that the device structure and the accompanying drawings of the present invention mainly describe the principle of the present invention, and in the technology of this design principle, the settings of the power mechanism, the power supply system, the control system, etc. of the device are not completely described, and the details of the power mechanism, the power supply system, and the control system can be clearly known on the premise that those skilled in the art understand the principle of the present invention.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. The utility model provides a prevent projection curtain of fold during rolling which characterized in that includes:

a long box;

the motor is fixedly arranged on the inner wall of one side of the long box;

the winding rod is fixedly and rotatably arranged in the long box, and one end of the winding rod is fixedly connected with an output shaft of the motor;

the curtain is wound on the winding rod, and the bottom end of the curtain extends out of the long box;

the two box bodies are fixedly arranged at the bottom of the long box;

the two positioning rods are respectively and fixedly arranged in the corresponding box bodies;

the four sliding blocks are respectively installed on the corresponding positioning rods in a sliding manner;

the four springs are sleeved on the corresponding positioning rods in a sliding manner, one ends of the springs are in contact with the inner wall of one side of the box body, and the other ends of the springs are in contact with the corresponding sliding blocks;

the four rotating shafts are respectively and rotatably arranged on the corresponding sliding blocks;

two ends of the two round rods extend into the corresponding box bodies respectively and are fixedly connected with the corresponding rotating shafts, and one side, close to each other, of the two round rods is in contact with the curtain.

2. The curtain of claim 1, wherein a first sliding hole is formed in an inner wall of the bottom of the elongated box, and the curtain is slidably connected to the first sliding hole.

3. The projection curtain of claim 1, wherein the sliding block is provided with a second sliding hole, and the positioning rod is slidably connected with the second sliding hole.

4. The curtain cloth of claim 1, wherein a third sliding hole is formed in an inner wall of one side of the box body, and the two round rods are slidably connected with the third sliding hole.

5. The curtain of claim 1, wherein the sliding block is provided with a rotating groove, and the rotating shaft is rotatably connected with the rotating groove.

6. The curtain as claimed in claim 1, wherein the curtain is provided with a weight bar at the bottom, and two limiting circular plates are fixed on the rolling bar.