CN215576089U

CN215576089U - Visual angle adjustable projection curtain

Info

Publication number: CN215576089U
Application number: CN202121982293.XU
Authority: CN
Inventors: 陈倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-01-18
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a projection curtain with an adjustable visual angle, which comprises a lower guide rail, wherein the lower guide rail transversely extends and is rotatably arranged on a wall body, the end part of the lower guide rail is provided with a winding drum, a winding shaft is rotatably arranged in the winding drum, a projection curtain is wound on the winding shaft, the winding drum extends upwards, the side part of the winding drum is provided with an opening, the projection curtain extends outwards from the opening at the side part of the winding drum, a pull rod is slidably arranged on the lower guide rail, one end of the projection curtain extending out of the winding drum is connected with the pull rod, and a direction adjusting motor for driving the lower guide rail to rotate in a reciprocating manner is arranged on the wall body. The projection curtain can control the vertical inclination angle, thereby achieving the purpose of adjusting the viewing angle of the projection curtain and audiences and facilitating the audiences to watch.

Description

Visual angle adjustable projection curtain

Technical Field

The utility model relates to a projection curtain with an adjustable visual angle.

Background

The current projection curtain includes the receipts reel, installs the rolling axle in the receipts reel, and the projection curtain is rich to be established on the rolling axle, when using projection equipment, utilizes the rolling motor in the receipts reel to expand the projection curtain, and the projection curtain slowly hangs down afterwards.

Disadvantages of current projection screens are: after the projection curtain is unfolded, the projection curtain is vertical to the ground under the influence of gravity, when the projection curtain is used in large indoor environments such as a ladder classroom and an auditorium, because the indoor floor is in a ladder shape and gradually rises, the ground is higher as the projection curtain is farther away, when the projection curtain is used in the environment, human eyes and the projection curtain are not in a vertical direct-viewing state, a certain inclination angle exists between the human eyes and the projection curtain, especially front audiences watching the projection curtain at a short distance, and information watching the projection curtain is unclear and needs to be improved.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a projection screen with adjustable viewing angle, which can adjust the tilt angle of the projection screen.

In order to achieve the purpose, the utility model discloses a projection curtain with an adjustable visual angle, which is structurally characterized in that: the lower guide rail transversely extends and is rotatably installed on a wall body, the winding drum is installed at the end part of the lower guide rail, the winding shaft is rotatably installed in the winding drum, a projection curtain is wound on the winding shaft and extends upwards, an opening is formed in the side part of the winding drum, the projection curtain extends outwards from the opening of the side part of the winding drum, a pull rod is slidably installed on the lower guide rail, one end, extending out of the winding drum, of the projection curtain is connected with the pull rod, and a direction adjusting motor used for driving the lower guide rail to rotate in a reciprocating mode is installed on the wall body.

After adopting above-mentioned structure, with the vertical placing of winding drum, at the lower part installation lower guideway of winding drum, utilize the pull rod on the lower guideway to pull out the projection curtain from the winding drum, after the projection curtain expandes, usable accent is to the rotation of motor control lower guideway, can control the tilt angle from top to bottom of projection curtain this moment to reach the purpose of adjustment projection curtain and spectator's visual angle, make things convenient for spectator to watch.

Regarding the connection structure of the pull rod and the lower guide rail, a lead screw is rotatably arranged in the lower guide rail, a nut capable of sliding in the lower guide rail is screwed on the lead screw, the lower end of the pull rod is connected with the nut, and a stretching motor for driving the lead screw to rotate is arranged in the winding drum.

In order to ensure the smooth action of the pull rod, the upper part of the winding drum is provided with an upper guide rail, a slide way is arranged in the upper guide rail, the upper end of the pull rod is provided with a roller, and the roller is arranged in the slide way in a rolling way.

Regarding the mounting structure of gyro wheel, the slide is the rectangle form, and the lower part of going up the guide rail has seted up first groove of passing through, and the gyro wheel is equipped with two, and two gyro wheels are located the both sides in first groove of passing through respectively, and the gyro wheel frame is installed to the upper end of pull rod, and the gyro wheel rotates and installs on the gyro wheel frame.

The specific structure of the lower guide rail is that the lower guide rail is cylindrical, a second through groove for communicating the inside and the outside of the lower guide rail is formed in the upper portion of the lower guide rail, a nut is slidably mounted in the lower guide rail, a connecting rod is mounted on the upper portion of the nut, the connecting rod penetrates through the second through groove and protrudes upwards, and the lower end of the pull rod is connected with the connecting rod.

Regarding the mounting structure of lower guideway, install the bearing frame on the wall body, the bearing frame is installed two, and the both ends of lower guideway cartridge respectively is in two bearing frames. In addition, the limiting device can be arranged on the lower guide rail, so that the overlarge rotation angle of the lower guide rail is avoided.

Regarding the winding structure of the projection curtain, a winding motor for driving a winding shaft to rotate is installed in a winding drum.

In order to ensure the reliability of the upper guide rail structure, the upper end of the winding drum is provided with a reinforcing rib, the other end of the reinforcing rib is connected with the upper guide rail, and the connecting part of the upper guide rail and the reinforcing rib is positioned at one end of the upper guide rail, which is far away from the winding drum. When a winding drum is selected, one section of the winding drum can be extended upwards on the basis of the original height of the winding drum, and the reinforcing rib is connected with the top end of the winding drum, so that the reinforcing rib, the winding drum and the upper guide rail form a stable triangle.

In conclusion, the beneficial effects of the utility model are as follows: when the projection screen is stretched, the stretching motor is controlled to act, the stretching motor drives the lead screw to rotate, the screw nut slides in the lower guide rail, and the pull rod moves along with the screw nut at the moment, so that the projection screen is stretched; when the projection curtain is rolled, the motor needs to be rolled to act, and the stretching motor rotates reversely. This device utilizes to transfer to the rotation of motor control lower guideway, can control the upper and lower inclination of projection curtain this moment to reach the mesh of adjustment projection curtain and spectator's visual angle, make things convenient for spectator to watch.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the upper rail;

FIG. 3 is a schematic view of the structure of the lower rail;

fig. 4 is a front view of a projection curtain.

In the figure: the device comprises a winding drum 1, a winding shaft 2, a winding motor 3, a projection screen 4, a pull rod 5, an upper guide rail 6, a lower guide rail 7, a screw 8, a nut 9, a bearing seat 10, a reinforcing rib 11, a roller 12, a direction adjusting motor 13, an extending motor 14, a slideway 15, a first passing groove 16, a roller frame 17, a second passing groove 18 and a connecting rod 19.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

A visual angle adjustable projection curtain 4, its structural feature is: the lower guide rail 7 transversely extends and is rotatably installed on a wall body, the winding drum 1 is installed at the end part of the lower guide rail 7, the winding shaft 2 is rotatably installed in the winding drum 1, the projection curtain 4 is wound on the winding shaft 2, the winding drum 1 extends upwards, an opening is formed in the side part of the winding drum 1, the projection curtain 4 extends outwards from the opening of the side part of the winding drum 1, the pull rod 5 is slidably installed on the lower guide rail 7, one end, extending out of the winding drum 1, of the projection curtain 4 is connected with the pull rod 5, and the wall body is provided with a direction adjusting motor 13 for driving the lower guide rail 7 to rotate in a reciprocating mode. Referring to the attached drawing 1, after the structure is adopted, the winding drum 1 is vertically placed, the lower guide rail 7 is installed on the lower portion of the winding drum 1, the projection curtain 4 can be pulled out of the winding drum 1 by utilizing the pull rod 5 on the lower guide rail 7, after the projection curtain 4 is unfolded, the lower guide rail 7 is controlled to rotate by utilizing the direction-adjusting motor 13, the vertical inclination angle of the projection curtain 4 can be controlled at the moment, and therefore the purpose of adjusting the viewing angle of the projection curtain 4 and audiences is achieved, and the audiences can watch conveniently.

Referring to fig. 1 and 3, regarding the connection structure of the pull rod 5 and the lower guide rail 7, a lead screw 8 is rotatably mounted in the lower guide rail 7, a nut 9 capable of sliding in the lower guide rail 7 is screwed on the lead screw 8, the lower end of the pull rod 5 is connected with the nut 9, and an extension motor 14 for driving the lead screw 8 to rotate is mounted in the take-up drum 1. In order to ensure the smooth action of the pull rod 5, the upper part of the winding drum 1 is provided with an upper guide rail 6, a slide way 15 is arranged in the upper guide rail 6, the upper end of the pull rod 5 is provided with a roller 12, and the roller 12 is arranged in the slide way 15 in a rolling way.

Referring to fig. 1 and 2, regarding the installation structure of the rollers 12, the slide 15 is rectangular, the lower portion of the upper guide rail 6 is provided with a first passing groove 16, two rollers 12 are provided, the two rollers 12 are respectively located at two sides of the first passing groove 16, the upper end of the pull rod 5 is provided with a roller frame 17, and the rollers 12 are rotatably installed on the roller frame 17.

Referring to fig. 3, regarding the specific structure of the lower guide rail 7, the lower guide rail 7 is cylindrical, the upper portion of the lower guide rail 7 is provided with a second through groove 18 for communicating the inside and the outside of the lower guide rail 7, the nut 9 is slidably installed in the lower guide rail 7, the upper portion of the nut 9 is provided with a connecting rod 19, the connecting rod 19 penetrates through the second through groove 18 and protrudes upwards, and the lower end of the pull rod 5 is connected with the connecting rod 19. Regarding the mounting structure of the lower guide rail 7, the wall body is provided with two bearing seats 10, and two ends of the lower guide rail 7 are respectively inserted into the two bearing seats 10. In addition, a limiting device can be arranged on the lower guide rail 7, so that the lower guide rail 7 is prevented from rotating by too large angle.

Referring to fig. 1, regarding the winding structure of the projection screen 4, a winding motor 3 for driving a winding shaft 2 to rotate is installed in the winding drum 1.

Referring to fig. 4, in order to ensure the structural reliability of the upper guide rail 6, a reinforcing rib 11 is installed at the upper end of the winding drum 1, the other end of the reinforcing rib 11 is connected with the upper guide rail 6, and the connection part of the upper guide rail 6 and the reinforcing rib 11 is located at one end of the upper guide rail 6 far away from the winding drum 1. When selecting the winding drum 1, one section of the reinforcing rib 11 can be extended upwards on the basis of the original height of the winding drum 1, and the reinforcing rib 11 is connected with the top end of the winding drum 1, so that the reinforcing rib 11, the winding drum 1 and the upper guide rail 6 form a stable triangle.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a visual angle adjustable projection curtain, a serial communication port, including lower guideway (7), lower guideway (7) transversely extend and rotate and install on the wall body, the end of lower guideway (7) is installed and is taken up reel (1), rolling axle (2) are installed in rolling reel (1) rotation, winding axle (2) are gone up to be equipped with projection curtain (4), rolling reel (1) upwards extends, the lateral part of taking up reel (1) is equipped with the opening, projection curtain (4) outwards stretch out from the lateral part opening part of rolling reel (1), slidable mounting has pull rod (5) on lower guideway (7), projection curtain (4) stretch out the one end of taking up reel (1) and are connected with pull rod (5), install on the wall body and be used for driving the direction adjusting motor (13) of lower guideway (7) reciprocating rotation.

2. The projection curtain with adjustable viewing angle as claimed in claim 1, wherein the lower guide rail (7) is rotatably installed with a lead screw (8), the lead screw (8) is screwed with a nut (9) capable of sliding in the lower guide rail (7), the lower end of the pull rod (5) is connected with the nut (9), and the winding drum (1) is installed with an extension motor (14) for driving the lead screw (8) to rotate.

3. The projection curtain with the adjustable viewing angle as claimed in claim 2, wherein the upper part of the winding drum (1) is provided with an upper guide rail (6), a slide way (15) is arranged in the upper guide rail (6), the upper end of the pull rod (5) is provided with a roller (12), and the roller (12) is arranged in the slide way (15) in a rolling way.

4. The projection curtain with the adjustable visual angle as claimed in claim 3, wherein the slide way (15) is rectangular, the lower part of the upper guide rail (6) is provided with a first passing groove (16), two rollers (12) are provided, the two rollers (12) are respectively positioned at two sides of the first passing groove (16), the upper end of the pull rod (5) is provided with a roller frame (17), and the rollers (12) are rotatably arranged on the roller frame (17).

5. The projection curtain with the adjustable visual angle as claimed in claim 2, wherein the lower guide rail (7) is cylindrical, the upper portion of the lower guide rail (7) is provided with a second through groove (18) which enables the inside and the outside of the lower guide rail to be communicated, the screw nut (9) is slidably mounted in the lower guide rail (7), the upper portion of the screw nut (9) is provided with a connecting rod (19), the connecting rod (19) penetrates through the second through groove (18) to extend upwards, and the lower end of the pull rod (5) is connected with the connecting rod (19).

6. The projection curtain with the adjustable visual angle as claimed in claim 1, wherein the wall body is provided with two bearing seats (10), the two bearing seats (10) are arranged, and two ends of the lower guide rail (7) are respectively inserted into the two bearing seats (10).

7. The projection curtain with adjustable viewing angle as claimed in claim 1, wherein the winding drum (1) is provided therein with a winding motor (3) for driving the winding shaft (2) to rotate.

8. The projection curtain with the adjustable visual angle as claimed in any one of claims 1 to 7, wherein the upper end of the winding drum (1) is provided with a reinforcing rib (11), the other end of the reinforcing rib (11) is connected with the upper guide rail (6), and the connecting part of the upper guide rail (6) and the reinforcing rib (11) is positioned at one end of the upper guide rail (6) far away from the winding drum (1).