Telescopic projection curtain mechanism

Abstract

The utility model discloses a telescopic projection curtain mechanism, which comprises two telescopic ceiling long rails arranged in parallel and respectively arranged on two sides of the top of a frame in a carriage; the two telescopic ceiling middle rails are arranged in parallel and are respectively connected with the two telescopic ceiling long rails in a sliding manner; the two telescopic ceiling inner rails are arranged in parallel and are in sliding connection with the two telescopic ceiling middle rails respectively, the tails of the two telescopic ceiling inner rails are connected with each other through a cross beam, and the heads of the two telescopic ceiling inner rails are each provided with a transversely-arranged curtain reel through a supporting plate; and the telescopic assembly is arranged between the two telescopic ceiling long rails, and the telescopic end of the telescopic assembly is connected with the cross beam, so that the curtain reel can be pushed out of the carriage when the telescopic assembly acts.

Description

Technical Field

[0001] This utility model relates to the field of stage holographic projection equipment technology, and in particular to a telescopic projection screen mechanism. Background Technology

[0002] Holographic projection technology, also known as virtual imaging technology, is a technique that uses the principles of interference and diffraction to record and reproduce a true three-dimensional image of an object. Holographic projection technology can not only create three-dimensional aerial illusions, but also allow these illusions to interact with performers, creating a stunning performance effect.

[0003] Chinese patent application number 202022146626.7 discloses a holographic mobile platform device that uses a frame to mount a projection device, achieving holographic projection. However, this device cannot adjust the screen's tilt angle, and the lack of a membrane extension mechanism limits the automatic unfolding and retraction of the screen. Furthermore, the low level of automation prevents rapid screen unfolding and retraction, hindering flexible use in various scenarios. These limitations can also lead to poor viewing angles, especially as viewers' angles vary. The inability to adjust the screen angle according to needs results in limited field of view for some viewers, leading to suboptimal projection quality and affecting the viewing experience and presentation, thus failing to meet the needs of different scenarios. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a holographic telescopic projection screen mechanism.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] The retractable projection screen mechanism includes:

[0007] Two parallel telescopic canopy tracks are set on both sides of the top of the frame;

[0008] Two parallel retractable roof tracks are slidably connected to two long retractable roof tracks, respectively.

[0009] Two parallel retractable canopy inner tracks are slidably connected to the two retractable canopy inner tracks respectively, and the tail ends of the two retractable canopy inner tracks are connected to each other through crossbeams, and the head ends of each track are mounted with a horizontal curtain roller through a support plate.

[0010] The telescopic component is located between two long tracks of the telescopic canopy, and its telescopic end is connected to the crossbeam, so that the curtain roll can be pushed out of the carriage when it is in motion.

[0011] This utility model also includes a membrane stretching assembly, which is set in the track head inside the two telescopic canopies, for unfolding the projection film on the screen roll.

[0012] After the screen roll is pushed out of the carriage, the projection film on the screen roll is opened by the film extension component. The bottom of the projection film is fixed inside the carriage. The telescopic component is used to move the tracks inside the two telescopic canopies back and forth to adjust the angle of the projection film.

[0013] The membrane stretching assembly includes:

[0014] Two torque motors are respectively mounted on two support plates;

[0015] Two curtain drive rods, the ends of which are connected to the drive rods of two torque motors respectively;

[0016] Two curtain driven levers are respectively hinged at their tail ends to the heads of two curtain drive levers, and their heads are respectively hinged to both ends of the horizontally placed curtain bottom rod.

[0017] The bottom rod of the screen is connected to the head of the projection film, so that the bottom rod can expand or retract the projection film when it moves.

[0018] When the projection film is unfolded, the bottom rod of the screen can overlap with the screen tie rod shaft on the floor of the carriage, so that the projection film can form a 45-degree angle with the screen support plate.

[0019] The telescopic component includes:

[0020] Electric push rods are placed horizontally at the ends of the two telescopic canopy tracks;

[0021] The ceiling base rod is horizontally placed at the end of the two telescopic ceiling long tracks. A slide rail is installed on it, and the telescopic rod of the electric push rod is slidably connected to the slide rail.

[0022] The scissor-type telescopic component is composed of a telescopic canopy drive rod, telescopic canopy rod number one, telescopic canopy rod number two, and telescopic canopy driven rod that are hinged together.

[0023] One end of the telescopic ceiling pull rod No. 1 is hinged to the bottom of the electric push rod; one end of the telescopic ceiling drive pull rod is hinged to the telescopic rod of the electric push rod; the head of the telescopic ceiling pull rod No. 2 is hinged to one end of the crossbeam, and the head of the telescopic ceiling driven pull rod is connected to the slide rail on the other end of the crossbeam.

[0024] The telescopic canopy has multiple bearings on its inner track, which allow it to slide on the long track of the telescopic canopy.

[0025] This utility model also includes:

[0026] The rain shelter is horizontally installed under the inner tracks of the two retractable canopies, so that when the inner tracks of the two retractable canopies are extended, the rain shelter can also be extended and placed on the upper part of the screen support plate.

[0027] The beneficial effects of this utility model are:

[0028] 1. This utility model can flexibly control the unfolding and retraction of the screen, and can also adjust the size of the projection area as needed to adapt to different performance and display needs. Through the cooperation of electric push rods, scissor telescopic parts and torque motors, the extension and retraction and angle adjustment of the screen are controlled to ensure that the audience can get the best visual effect from different angles. The size and proportion of the projected image are perfectly matched with the stage performance, allowing the audience to obtain a clearer projected image.

[0029] 2. This utility model uses electric push rods and torque motors to achieve automatic retraction and extension of the projection screen. Users can unfold and retract the screen simply by using a remote control. Furthermore, automated control provides a more stable opening and closing speed, avoiding screen damage or unevenness caused by manual operation. The addition of automated control makes the retractable projection screen mechanism more efficient and versatile for rural performances.

[0030] 3. The combination of telescopic components and membrane extension components provides a flexible and convenient projection screen solution, especially suitable for scenarios requiring position adjustment. This utility model greatly improves space utilization, and users can easily and quickly control the unfolding and retraction of the screen, reducing the difficulty of operation for users. It is also equipped with a limit device to ensure that the screen will not exceed the set range during unfolding or retraction, improving safety. The fully automatic design can improve the flatness of the screen, improve the quality of the projected image, and enhance the performance and viewing experience. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of this utility model;

[0032] Figure 2 This is a schematic diagram of the connection of the curtain roller of this utility model;

[0033] Figure 3 This is a schematic diagram of the membrane stretching assembly of this utility model;

[0034] Figure 4 This is a diagram showing the usage state of this utility model;

[0035] Reference numerals: 1-Electric push rod, 2-Canopy bottom rod, 3-Telescopic canopy drive rod, 4-Telescopic canopy rod No. 1, 5-Telescopic canopy rod No. 2, 6-Telescopic canopy driven rod, 7-Telescopic canopy long track, 8-Telescopic canopy middle track, 9-Telescopic canopy inner track, 10-Limiting block, 11-Limiting stop, 12-Bearing, 13-Crossbeam, 14-Rain shelter, 15-Screen driven rod, 16-Screen bottom rod, 17-Projection film, 18-Torque motor, 19-Support plate, 20-Screen roller, 21-Screen drive rod, 22-Screen rod shaft, 23-Screen support plate. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0037] like Figures 1 to 3 As shown, the telescopic projection screen mechanism includes: two parallel telescopic ceiling long tracks 7, respectively located on both sides of the top of the frame; two parallel telescopic ceiling middle tracks 8, slidably connected to the two telescopic ceiling long tracks 7; two parallel telescopic ceiling inner tracks 9, slidably connected to the two telescopic ceiling middle tracks 8, with the tail ends of the two telescopic ceiling inner tracks 9 connected to each other via a crossbeam 13, and the heads of each track 9 mounted with a horizontally placed screen roller 20 via a support plate 19; and a telescopic component, located between the two telescopic ceiling long tracks 7, with its telescopic end connected to the crossbeam 13, so that when it moves, it can push the screen roller 20 out of the carriage.

[0038] like Figures 1 to 4As shown, this utility model also includes a membrane extension assembly, which is installed at the head of the two retractable canopy tracks 9 to unfold the projection film 17 on the screen roll 20. After the screen roll 20 is pushed out of the carriage, the projection film 17 on the screen roll 20 is opened by the membrane extension assembly, and the bottom of the projection film 17 is fixed inside the carriage. The telescopic assembly moves the two retractable canopy tracks 9 back and forth to adjust the angle of the projection film 17. The membrane extension assembly includes: two torque motors 18, respectively installed on two support plates 19; and two screen drive rods 21, whose tails... The ends are respectively connected to the drive rods of two torque motors 18; the tail ends of two screen driven pull rods 15 are respectively hinged to the heads of two screen drive pull rods 21, and the heads are respectively hinged to both ends of the horizontally placed screen bottom rod 16; wherein, the screen bottom rod 16 is connected to the head of the projection film 17, so that the screen bottom rod 16 can unfold or retract the projection film 17 when it moves; wherein, after the projection film 17 is unfolded, the screen bottom rod 16 can overlap with the screen pull rod shaft 22 on the carriage floor 23, so that the projection film 17 can form a 45-degree angle with the screen support plate 23.

[0039] like Figure 1 and Figure 2 As shown, the telescopic assembly includes: an electric push rod 1, horizontally positioned at the tail of two telescopic ceiling long tracks 7; a ceiling bottom rod 2, horizontally positioned at the tail of two telescopic ceiling long tracks 7, on which a slide rail is provided, and the telescopic rod of the electric push rod 1 is slidably connected to the slide rail; and a scissor-type telescopic component, which is formed by hinged connections between a telescopic ceiling drive rod 3, a telescopic ceiling pull rod 4, a telescopic ceiling pull rod 5, and a telescopic ceiling driven rod 6; wherein, one end of the telescopic ceiling pull rod 4 is hinged to the bottom of the electric push rod 1; one end of the telescopic ceiling drive rod 3 is hinged to the telescopic rod of the electric push rod 1; the head of the telescopic ceiling pull rod 5 is hinged to one end of a crossbeam 13, and the head of the telescopic ceiling driven rod 6 is connected to the slide rail on the other end of the crossbeam 13.

[0040] like Figure 1 As shown, both the central track 8 and the inner track 9 of the telescopic canopy are equipped with limit blocks 10 at their tail ends. The central track 8 of the telescopic canopy is equipped with limit stops 11 to prevent it from exceeding its range of motion during sliding. The central track 8 of the telescopic canopy is equipped with multiple bearings 12, which enable sliding on the long track 7 of the telescopic canopy. The inner track 9 of the telescopic canopy is equipped with multiple bearings 12, which enable sliding on the central track 8 of the telescopic canopy.

[0041] like Figure 1 As shown, the present invention also includes a rain shelter 14, which is horizontally arranged below the inner tracks 9 of the two telescopic canopies, so that when the inner tracks 9 of the two telescopic canopies are pushed out, the rain shelter 14 can also be pushed out and placed on the upper part of the screen support plate 23.

[0042] In use, the screen support plate 23 mainly connects the roof and chassis of the carriage and also supports the LED screen. The chassis is connected to the wheels to drive the entire holographic vehicle to move. The holographic vehicle is connected to the front of the vehicle through a locking hook to drag the holographic vehicle to move.

[0043] When a performance is required, a servo motor is installed at the connection between the carriage and the screen support plate 23. The servo motor drives the screen support plate 23 to unfold. The four support legs on the screen support plate 23 support the screen support plate 23 to form a platform. At this time, the actors perform inside the carriage.

[0044] When a holographic projection display is required, the telescopic rod of the electric push rod 1 extends, driving the telescopic canopy drive rod 3 to move, causing the scissor-type telescopic components to activate. This pushes the crossbeam 13 and the two telescopic canopy inner tracks 9 out of the carriage. Since the rain shelter 14 is horizontally positioned below the two telescopic canopy inner tracks 9, the rain shelter 14 is also pushed out of the carriage and finally placed on top of the screen support plate 23. The rain shelter 14 is designed to protect the LED screen and projection film 17. Next, the film extension assembly activates, and the drive rods of the two torque motors 18 drive the two screen drive rods 21 to open outward. At this time, the two screen driven rods 15, which are hinged to them, extend downward with the screen base rod 16. Since the head of the projection film 17 on the screen roll 20 is mounted on the screen base rod 16, the projection film 17 will be pulled out and unfolded when the screen base rod 16 extends downward. Finally, the screen base rod 16 is connected to the screen pull rod shaft 22, so that the projection film 17 and the LED screen form a 45-degree angle. The LED screen, which is placed horizontally on the screen support plate 23, projects the image onto the projection film 17 to achieve holographic projection. The screen roll 20 is equipped with a screen rewind assembly, and the tail of the projection film 17 is connected to the screen rewind assembly. When it is necessary to retract the projection film 17, the film extension assembly can cooperate with the screen rewind assembly to roll the projection film 17 back onto the screen roll 20.

[0045] The screen rewind assembly can be a synchronous motor with a remote control. The remote control sends a command to the synchronous motor, causing it to operate. The motor's rotation is transmitted to the screen roll 20 via a transmission device, thus rewinding the projection film 17. Alternatively, the forward and reverse rotation function of the synchronous motor can be used in conjunction with the film stretching assembly to unfold the projection film 17.

[0046] When it is necessary to adjust the angle between the projection film 17 and the LED screen, it is only necessary to control the extension and retraction of the scissor telescopic component by using the electric push rod 1 to realize the forward and backward movement of the tracks 9 inside the two telescopic canopies, thereby changing the angle between the projection film 17 and the LED screen.

[0047] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A telescopic projection screen mechanism, characterized in that, include: Two parallel telescopic canopy tracks (7) are respectively set on both sides of the top of the frame inside the carriage; Two parallel telescopic canopy central tracks (8) are slidably connected to two telescopic canopy long tracks (7); Two parallel telescopic canopy inner tracks (9) are slidably connected to two telescopic canopy inner tracks (8), and the tails of the two telescopic canopy inner tracks (9) are connected to each other through a crossbeam (13), and the heads of the two tracks are respectively installed with a horizontal curtain roller (20) through a support plate (19). The telescopic assembly is set between two telescopic canopy long tracks (7), and its telescopic end is connected to the crossbeam (13), so that when it moves, it can push the curtain roll (20) out of the carriage; It also includes a membrane stretching assembly, set at the head of the two telescopic canopy tracks (9), for unfolding the projection film (17) on the screen roll (20); After the screen roll (20) is pushed out of the carriage, the projection film (17) on the screen roll (20) is opened by the film extension assembly. The bottom of the projection film (17) is fixed in the carriage. The telescopic assembly is used to move the tracks (9) in the two telescopic canopies back and forth to adjust the angle of the projection film (17).

2. The telescopic projection screen mechanism according to claim 1, characterized in that, The membrane stretching assembly includes: Two torque motors (18) are respectively mounted on two support plates (19); Two curtain drive rods (21) are connected at their tail ends to the drive rods of two torque motors (18); Two curtain driven levers (15) have their tail ends hinged to the heads of two curtain drive levers (21), and their heads are hinged to both ends of a horizontally placed curtain bottom rod (16). Among them, the bottom rod of the screen (16) is connected to the head of the projection film (17), so that the bottom rod of the screen (16) can expand or contract the projection film (17) when it is in motion; When the projection film (17) is unfolded, the bottom rod (16) of the screen can overlap with the screen pull rod shaft (22) on the floor of the carriage, so that the projection film (17) can form a 45-degree angle with the screen support plate (23).

3. The telescopic projection screen mechanism according to claim 1, characterized in that, The telescopic component includes: An electric push rod (1) is placed horizontally at the end of two telescopic canopy long tracks (7); The ceiling bottom rod (2) is placed horizontally at the end of the two telescopic ceiling long tracks (7), and a slide rail is provided on it. The telescopic rod of the electric push rod (1) is slidably connected to the slide rail. The scissor-type telescopic component is formed by hinged connection of the telescopic canopy drive rod (3), telescopic canopy rod No. 1 (4), telescopic canopy rod No. 2 (5), and telescopic canopy driven rod (6); Among them, one end of the telescopic ceiling pull rod No. 1 (4) is hinged to the bottom of the electric push rod (1); one end of the telescopic ceiling drive pull rod (3) is hinged to the telescopic rod of the electric push rod (1); the head of the telescopic ceiling pull rod No. 2 (5) is hinged to one end of the crossbeam (13); and the head of the telescopic ceiling driven pull rod (6) is connected to the slide rail on the other end of the crossbeam (13).

4. The telescopic projection screen mechanism according to claim 1, characterized in that, Multiple bearings (12) are provided on the track (8) of the telescopic canopy, and the sliding on the long track (7) of the telescopic canopy is achieved through the bearings (12). Multiple bearings (12) are provided on the inner track (9) of the telescopic canopy, and the sliding on the track (8) of the telescopic canopy is achieved through the bearings (12).

5. The telescopic projection screen mechanism according to claim 1, characterized in that, Also includes: The rain shelter (14) is horizontally set under the inner tracks (9) of the two telescopic canopies, so that when the inner tracks (9) of the two telescopic canopies are pushed out, the rain shelter (14) can also be pushed out and placed on the upper part of the screen support plate (23).

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