Adjustable screen for screen projection equipment

Abstract

The utility model relates to the technical field of projection equipment, and discloses an adjustable screen for projection screen equipment, which comprises a base, a driving motor is arranged in the middle of the bottom of the inner side wall of the base, the output end of the driving motor is connected with a rotating rod, and the upper side wall of the rotating rod penetrates through the middle of the upper side wall of the base. And the middle position of the lower side wall of the rotating disc is connected with the middle position of the upper side wall of the rotating rod, an adjusting seat is installed in the middle position of the upper side wall of the rotating disc, and a double-shaft motor is installed in the middle position of the bottom of the inner side wall of the adjusting seat. The controller is used for controlling the output end of the driving motor installed in the middle of the bottom of the inner side wall of the base to drive the rotating rod to rotate, the rotating rod acts on the rotating disc, and the rotating disc drives the adjusting base to rotate along with rotation of the rotating rod. Therefore, the projection screen mounted on the inner side wall of the mounting frame is driven to rotate left and right, and the angle of the whole equipment can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, and in particular to an adjustable screen for projection equipment. Background Art

[0002] Projection screen is one of the most commonly used products in projector peripheral equipment. The projector projects light onto the projection screen and displays the picture on the projection screen. In the projection screen, the flatness of the screen directly affects the display quality of the picture. If the screen is not flat, the picture projected by the projector on the screen will not be displayed evenly, resulting in poor picture resolution. Therefore, maintaining the flatness of the screen is of great significance to improving the quality of the displayed picture.

[0003] Patent No.: CN214375798U A Chinese patent provides an adjustable projection screen, including a fixed plate, a rotating shaft is rotatably provided on the fixed plate, a first rotating disk is fixedly provided at the end of the rotating shaft, a lifting mechanism is fixedly provided on the first rotating disk, and the lifting mechanism includes a first fixed block and a driving shaft. When adjusting the height of the screen, the utility model rotates the rotating rod to drive the driving shaft to rotate, the driving shaft rotates to drive the rotating plate to rotate, the rotating plate rotates, drives the connecting rod that is in contact with it to move upward, the connecting rod moves upward, drives the protective box to move upward, and thus the screen moves upward. When adjusting the angle of the screen, the utility model first rotates the screw rod to disengage its end from the threaded hole on the fixed plate, rotates the first rotating disk to adjust the position, and then inserts the screw rod into the threaded hole for fixing. The utility model can pull the screen on the winding roller to clamp and fix the screen through the clamping mechanism, so that the screen is flatter.

[0004] However, there are the following shortcomings in the above-mentioned invention. In the above-mentioned invention, the protective plate is placed vertically at 90 degrees to the screen when in use. When the overall height of the device is raised, the sight of the lower audience will be blocked by the protective plate, thereby affecting the viewing experience. In addition, the lifting structure of the device is cumbersome and the production cost is high. Therefore, the technicians in this field provide an adjustable screen for a projection device to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose an adjustable screen for a projection device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable screen for projection equipment, comprising a base, a driving motor is installed at the middle position of the bottom of the inner side wall of the base, a rotating rod is connected to the output end of the driving motor, the upper side wall of the rotating rod passes through the middle position of the upper side wall of the base, a rotating disk is rotatably connected to the middle position of the upper side wall of the base, the middle position of the lower side wall of the rotating disk is connected to the middle position of the upper side wall of the rotating rod, an adjusting seat is installed at the middle position of the upper side wall of the rotating disk, and a dual-axis motor is installed at the middle position of the bottom of the inner side wall of the adjusting seat;

[0007] Through the above technical solution, the output end of the driving motor installed at the middle position of the bottom of the inner wall of the base is controlled by the controller to drive the rotating rod to rotate, and the rotating rod acts on the rotating disk, and the rotating disk drives the adjustment seat to rotate following the rotation of the rotating rod, thereby driving the projection screen installed on the inner wall of the installation frame to rotate left and right, so that the angle of the whole device can be easily adjusted.

[0008] Further, the two output ends of the dual-axis motor are connected to a transmission rod, the two transmission rods are distributed in mirror-image opposition, a driving gear is installed in the middle position of one side wall and the middle position of the other side wall of the two transmission rods, a driven gear is respectively meshed with a middle position of one side of the upper side wall and a middle position of the other side of the upper side wall of the two driving gears, a support shaft is rotatably connected to the middle position of the lower side wall of the two driven gears, the two support shafts are distributed in mirror-image opposition, a limiting sleeve is rotatably connected to the middle position of the lower side wall of the two support shafts, and the lower side walls of the two limiting sleeves are respectively installed in the middle of the bottom of the inner side wall of the adjustment seat and close to the two sides;

[0009] Through the above technical solution, the two output ends of the dual-axis motor are controlled by the controller to drive the two transmission rods to rotate, thereby respectively driving the two driving gears to rotate and acting on the two driven gears.

[0010] Further, an adjusting block is installed at the middle position of the upper side wall of the two driven gears, an internal threaded sleeve is installed at the middle position of the inner side wall of the two adjusting blocks, and an adjusting screw is threadedly connected at the middle position of the inner side wall of the two internal threaded sleeves. The two adjusting screws are distributed in mirror image opposition, and the upper side walls of the two adjusting screws respectively penetrate and are slidably connected to the middle of the upper side wall of the adjusting seat near both sides;

[0011] Through the above technical solution, the two driven gears respectively drive the internal threaded sleeves installed on the inner walls of the two adjustment blocks to rotate, and according to the rotation direction of the internal threaded sleeves, the adjustment screw is driven to rise or fall to adjust the height of the projection screen in the installation frame.

[0012] Furthermore, a mounting frame is installed on the upper side walls of the two adjusting screws, and a projection screen is installed at the middle position of the inner side wall of the mounting frame;

[0013] Through the above technical solution, the picture is projected onto the projection screen through the projection device.

[0014] Further, hinges are installed at the upper end position of the middle side of the front side wall of the installation frame and at the lower end position of the middle side of the front side wall, a rotating shaft is connected through the middle of the inner side walls of the two hinges and at the other side position, a protective door is installed on the upper side wall and the lower side wall of the rotating shaft, and a through groove is opened at the upper end position of the middle side of the front side wall of the protective door and at the lower end position of the middle side of the front side wall, and the two through grooves are matched with the fixed ends of the two hinges respectively;

[0015] Through the above technical solution, the other side of the closed pulling protection door is swung, and the two first magnetic strips are magnetically connected with the two second magnetic strips, so that the projection screen is protected by the protection door, and the fixed ends of the two hinges match the two through grooves.

[0016] Further, a second magnetic strip is installed at the middle upper end position of the rear side wall of the protection door and the middle lower end position of the rear side wall, and the two second magnetic strips are distributed in mirror image opposition, and a first magnetic strip is installed at the middle upper end position of the front side wall of the installation frame and the middle lower end position of the front side wall, and the two first magnetic strips match the two second magnetic strips;

[0017] Through the above technical solution, the two first magnetic strips are separated from the two second magnetic strips by pulling the protective door outward, and under the action of the hinge and the rotating shaft, the protective door is opened and closed to the side wall position of the installation frame, so that the projection screen is exposed to the viewer's line of sight without blind spots, thereby improving the viewing effect.

[0018] Furthermore, a controller is installed at the middle position of the upper side wall of the adjustment seat, and the controller is electrically connected to the dual-axis motor and the drive motor respectively;

[0019] Through the above technical solution, the operating parameters of the dual-axis motor and the drive motor are respectively controlled by the controller.

[0020] Furthermore, the middle of the lower side wall of the base is rotatably connected to four corners with universal wheels, and the four universal wheels are distributed in a rectangular array;

[0021] Through the above technical solution, the movement of the equipment is facilitated by the function of four universal wheels.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the two first magnetic strips are separated from the two second magnetic strips by pulling the protection door outward, and the protection door is opened and closed to a side wall of the installation frame under the action of the hinge and the rotating shaft, so that the projection screen is exposed to the viewer's sight without blind spots, thereby improving the viewing effect.

[0024] 2. In the utility model, the two output ends of the dual-axis motor drive the two transmission rods to rotate, thereby driving the two driving gears to rotate respectively, and acting on the two driven gears, and the two driven gears respectively drive the internal threaded sleeves installed on the inner walls of the two adjustment blocks to rotate. According to the rotation direction of the internal threaded sleeves, the adjusting screw is driven to rise or fall to adjust the height of the projection screen in the installation frame, so that different viewers can see better imaging effects from the projection screen through different angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional schematic diagram of an adjustable screen for a screen projection device proposed by the utility model;

[0026] Figure 2 This is a structural schematic diagram of an adjustable screen for a screen projection device proposed by the utility model;

[0027] Figure 3 It is a partial front section schematic diagram of an adjustable screen for a screen projection device proposed by the utility model;

[0028] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0029] Figure 5 for Figure 1 A magnified schematic diagram of center A.

[0030] Legend:

[0031] 1. Base; 2. Rotating plate; 3. Universal wheel; 4. Adjusting seat; 5. Mounting frame; 6. Controller; 7. First magnetic strip; 8. Protective door; 9. Second magnetic strip; 10. Through slot; 11. Hinge; 12. Rotating shaft; 13. Adjusting screw; 14. Adjusting block; 15. Transmission rod; 16. Dual-axis motor; 17. Internally threaded sleeve; 18. Driving motor; 19. Rotating rod; 20. Projection screen; 21. Driven gear; 22. Support shaft; 23. Limiting sleeve; 24. Driving gear. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-5 The utility model provides an embodiment: an adjustable screen for projection equipment, including a base 1, a driving motor 18 is installed at the middle position of the bottom of the inner side wall of the base 1, and the output end of the driving motor 18 is connected to a rotating rod 19, the upper side wall of the rotating rod 19 passes through the middle position of the upper side wall of the base 1, and the middle position of the upper side wall of the base 1 is rotatably connected with a rotating disk 2, the middle position of the lower side wall of the rotating disk 2 is connected to the middle position of the upper side wall of the rotating rod 19, an adjustment seat 4 is installed at the middle position of the upper side wall of the rotating disk 2, and a double-axis motor 16 is installed at the middle position of the bottom of the inner side wall of the adjusting seat 4. The output end of the driving motor 18 installed at the middle position of the bottom of the inner side wall of the base 1 is controlled by a controller 6 to drive the rotating rod 19 to rotate, the rotating rod 19 acts on the rotating disk 2, and the rotating disk 2 drives the adjusting seat 4 to rotate following the rotation of the rotating rod 19, thereby driving the projection screen 20 installed on the inner side wall of the installation frame 5 to rotate left and right, so that the device as a whole can be conveniently adjusted in angle.

[0034] The two output ends of the dual-axis motor 16 are connected to the transmission rod 15, and the two transmission rods 15 are distributed in mirror-image relation. A driving gear 24 is installed in the middle position of one side wall and the middle position of the other side wall of the two transmission rods 15. The middle position of the upper side wall of the two driving gears 24, close to one side, and the middle position of the upper side wall, close to the other side, are respectively meshed with a driven gear 21. The middle position of the lower side wall of the two driven gears 21 is rotatably connected to a support shaft 22, and the two support shafts 22 are distributed in mirror-image relation. The middle position of the lower side wall of the two support shafts 22 is rotatably connected to a limiting sleeve 23. The lower side walls of the two limiting sleeves 23 are respectively installed in the middle of the bottom of the inner side wall of the adjustment seat 4, close to both sides. The two output ends of the dual-axis motor 16 are controlled by the controller 6 to drive the two transmission rods 15 to rotate, thereby driving the two driving gears 24 to rotate respectively, and acting on the two driven gears 21 , an adjusting block 14 is installed in the middle position of the upper side wall of the two driven gears 21, an internal threaded sleeve 17 is installed in the middle position of the inner side wall of the two adjusting blocks 14, and an adjusting screw 13 is threadedly connected to the middle position of the inner side wall of the two internal threaded sleeves 17. The two adjusting screws 13 are distributed in mirror image opposition, and the upper side walls of the two adjusting screws 13 respectively penetrate and are slidably connected to the middle of the upper side wall of the adjusting seat 4 on both sides. The internal threaded sleeves 17 installed on the inner side walls of the two adjusting blocks 14 are driven to rotate by the two driven gears 21 respectively, and according to the rotation direction of the internal threaded sleeve 17, the adjusting screws 13 are driven to rise or fall to adjust the height of the projection screen 20 in the installation frame 5. The upper side walls of the two adjusting screws 13 are installed with the installation frame 5, and the projection screen 20 is installed in the middle position of the inner side wall of the installation frame 5. The picture is projected onto the projection screen 20 through the projection equipment.

[0035] A hinge 11 is installed at the upper end position of the middle side of the front side wall of the installation frame 5 and at the lower end position of the middle side of the front side wall. A rotating shaft 12 is connected through the middle of the inner wall of the two hinges 11 and at the other side position. A protective door 8 is installed on the upper side wall and the lower side wall of the rotating shaft 12. A through groove 10 is opened at the upper end position of the middle side wall of the protective door 8 and at the lower end position of the middle side of the front side wall. The two through grooves 10 are matched with the fixed ends of the two hinges 11 respectively. The other side of the protective door 8 is swung by pulling it closed. The two first magnetic strips 7 are magnetically connected with the two second magnetic strips 9, and the projection screen is protected by the protection door 8. The fixed ends of the two hinges 11 match the two through slots 10. The second magnetic strips 9 are installed at the middle upper end of the rear side wall of the protection door 8 and the middle lower end of the rear side wall. The two second magnetic strips 9 are distributed in mirror image opposition. The first magnetic strips 7 are installed at the middle upper end of the front side wall of the installation frame 5 and the middle lower end of the front side wall. The two first magnetic strips 7 match the two second magnetic strips 9.

[0036] By pulling the protection door 8 outward, the two first magnetic strips 7 are separated from the two second magnetic strips 9, and under the action of the hinge 11 and the rotating shaft 12, the protection door 8 is opened and closed to the side wall position of the installation frame 5, so that the projection screen 20 is exposed to the viewer's line of sight without blind spots, thereby improving the viewing effect.

[0037] A controller 6 is installed in the middle of the upper side wall of the adjustment seat 4. The controller 6 is electrically connected to the dual-axis motor 16 and the drive motor 18 respectively. The operating parameters of the dual-axis motor 16 and the drive motor 18 are controlled by the controller 6 respectively. Universal wheels 3 are rotatably connected to the four corners in the middle of the lower side wall of the base 1. The four universal wheels 3 are distributed in a rectangular array. The four universal wheels 3 facilitate the movement of the equipment.

[0038] Working principle: The output end of the driving motor 18 installed at the middle position of the bottom of the inner wall of the base 1 is controlled by the controller 6 to drive the rotating rod 19 to rotate, and the rotating rod 19 acts on the rotating disk 2. The rotating disk 2 drives the adjusting seat 4 to rotate following the rotation of the rotating rod 19, thereby driving the projection screen 20 installed on the inner wall of the installation frame 5 to rotate left and right, so that the angle of the device as a whole can be easily adjusted. The two output ends of the dual-axis motor 16 are controlled by the controller 6 to drive the two transmission rods 15 to rotate, thereby driving the two driving gears 24 to rotate respectively, and acting on the two driven gears 21, and the two driven gears 21 respectively drive the internal threaded sleeves 17 installed on the inner walls of the two adjustment blocks 14 to rotate, according to the rotation direction of the internal threaded sleeves 17, the adjusting screw 13 is driven to rise or fall to adjust the height of the projection screen 20 in the installation frame 5, so that different viewers can see better imaging effects from the projection screen 20 through different angles.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable screen for a projection device, comprising a base (1), characterized in that: A driving motor (18) is installed at the middle position of the bottom of the inner side wall of the base (1); the output end of the driving motor (18) is connected to a rotating rod (19); the upper side wall of the rotating rod (19) penetrates the middle position of the upper side wall of the base (1); the middle position of the upper side wall of the base (1) is rotatably connected to a rotating disk (2); the middle position of the lower side wall of the rotating disk (2) is connected to the middle position of the upper side wall of the rotating rod (19); an adjusting seat (4) is installed at the middle position of the upper side wall of the rotating disk (2); and a dual-axis motor (16) is installed at the middle position of the bottom of the inner side wall of the adjusting seat (4).

2. The adjustable screen for screen projection equipment according to claim 1, characterized in that: The two output ends of the dual-axis motor (16) are both connected to a transmission rod (15), the two transmission rods (15) are arranged in a mirror-image-opposite manner, a driving gear (24) is installed in the middle position of one side wall and the middle position of the other side wall of the two transmission rods (15), a driven gear (21) is respectively meshed in the middle position of the upper side wall of the two driving gears (24) close to one side and the middle position of the upper side wall close to the other side, the middle position of the lower side wall of the two driven gears (21) is rotatably connected to a support shaft (22), the two support shafts (22) are arranged in a mirror-image-opposite manner, the middle position of the lower side wall of the two support shafts (22) is rotatably connected to a limiting sleeve (23), and the lower side walls of the two limiting sleeves (23) are respectively installed in the middle position of the bottom of the inner side wall of the adjustment seat (4) close to both sides.

3. The adjustable screen for screen projection equipment according to claim 2, characterized in that: An adjusting block (14) is installed at the middle position of the upper side wall of the two driven gears (21), an internal threaded sleeve (17) is installed at the middle position of the inner side wall of the two adjusting blocks (14), and an adjusting screw (13) is threadedly connected to the middle position of the inner side wall of the two internal threaded sleeves (17). The two adjusting screws (13) are distributed in mirror-image opposition, and the upper side walls of the two adjusting screws (13) respectively penetrate and are slidably connected to the middle of the upper side wall of the adjusting seat (4) near both sides.

4. The adjustable screen for screen projection equipment according to claim 3, characterized in that: A mounting frame (5) is installed on the upper side walls of the two adjusting screw rods (13), and a projection screen (20) is installed at the middle position of the inner side wall of the mounting frame (5).

5. The adjustable screen for screen projection equipment according to claim 4, characterized in that: A hinge (11) is installed at a middle position of one side of the front side wall of the installation frame (5) close to the upper end and a middle position of one side of the front side wall close to the lower end. A rotating shaft (12) is connected through the middle position of the inner side wall of the two hinges (11) close to the other side. A protective door (8) is installed on the upper side wall and the lower side wall of the rotating shaft (12). A through groove (10) is opened at a middle position of one side of the front side wall of the protection door (8) close to the upper end and a middle position of one side of the front side wall close to the lower end. The two through grooves (10) are matched with the fixed ends of the two hinges (11) respectively.

6. The adjustable screen for screen projection equipment according to claim 5, characterized in that: A second magnetic strip (9) is installed at the middle upper end and the middle lower end of the rear side wall of the protection door (8), and the two second magnetic strips (9) are arranged in mirror-image opposition. A first magnetic strip (7) is installed at the middle upper end and the middle lower end of the front side wall of the installation frame (5), and the two first magnetic strips (7) match the two second magnetic strips (9).

7. The adjustable screen for screen projection equipment according to claim 1, characterized in that: A controller (6) is installed at the middle position of the upper side wall of the adjustment seat (4), and the controller (6) is electrically connected to the dual-axis motor (16) and the drive motor (18) respectively.

8. The adjustable screen for screen projection equipment according to claim 1, characterized in that: Universal wheels (3) are rotatably connected to the middle of the lower side wall of the base (1) near the four corners, and the four universal wheels (3) are distributed in a rectangular array.

Images