Stable projection curtain

Abstract

The utility model relates to the technical field of projection curtains, in particular to a stable projection curtain, which comprises a mounting shell, a curtain winding mechanism is arranged in the mounting shell, a flexible curtain is connected below the curtain winding mechanism, and the flexible curtain is accommodated in the mounting shell through the curtain winding mechanism. A connecting plate is fixedly connected to the lower portion of the flexible curtain, the width of the connecting plate is larger than the thickness of the flexible curtain, a first connecting frame is rotationally connected to the upper portion of the connecting plate, and a second connecting frame is rotationally connected to the upper portion of the first connecting frame. According to the stable projection curtain, stable downward pushing force can be provided for the connecting plate through the supporting effect of the first connecting frame and the second connecting frame, so that the position of the connecting plate is kept stable, meanwhile, the flexible curtain is kept stable, wind blowing or external disturbance can be effectively resisted, and good stability can be kept when the flexible curtain is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to projection curtain technical field, concretely is a stable projection curtain. BACKGROUND

[0002] The projection curtain is a flexible display, and the curtain can be stored through cooperation of the folding and unfolding control structure, so that the curtain occupies a small space during storage and carrying, facilitates transportation, and is stored when not in use.

[0003] Prior art (application number CN202011098953.8, Chinese patent published on April 19, 2022) a curtain winding and unwinding device, including horizontal chassis and one end rotatingly installed in the horizontal chassis connecting rod, the other end of the connecting rod is supported on the end of the roller, the roller top is pressed in an elastic belt, the elastic belt two ends are fixedly installed in an inclined rod, one end of the inclined rod is rotatably connected to a vertical rod, the other end of the inclined rod and the horizontal chassis are provided with a tension spring, the vertical rod is formed at one end of the horizontal chassis. The application is pressed in the elastic belt outside the roller, so that the winding and unwinding quality is improved when the roller winding and unwinding.

[0004] At present, the winding and unwinding of the projection curtain is generally realized through the rotation of the winding drum, and the curtain is used by falling downward through its own gravity when the curtain is unwound, but in the use process of the projection curtain, the lower end is arranged in a hanging mode, the curtain is easily shaken by wind force, or is shaken by vehicle inertia when being installed on a vehicle, so that the picture display is abnormal, and the watching experience is affected. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a stable projection curtain, to solve the winding and unwinding of the projection curtain at present is generally realized through the rotation of the winding drum, and the curtain is used by falling downward through its own gravity when the curtain is unwound, but in the use process of the projection curtain, the lower end is arranged in a hanging mode, the curtain is easily shaken by wind force, or is shaken by vehicle inertia when being installed on a vehicle, so that the picture display is abnormal.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: a stable projection screen, including installation shell, the inside of installation shell is provided with screen winding mechanism, the below of screen winding mechanism is connected with flexible screen, through screen winding mechanism, the flexible screen is accomodate to the inside of installation shell, the below of flexible screen is fixedly connected with connecting plate, and the width of connecting plate is greater than the thickness of flexible screen, the top of connecting plate is rotatably connected with first connecting frame, and the top of first connecting frame is rotatably connected with second connecting frame, and first connecting frame and second connecting frame are about the center line of connecting plate and set left and right symmetry, the upper end of second connecting frame is fixedly connected with control shaft, control shaft, and the outside of control shaft is connected with rotary control mechanism, and the rotation of control shaft is controlled.

[0007] Further optimize the technical scheme, the length of first connecting frame and the length of second connecting frame are equal, and the length of first connecting frame is less than half of the length of connecting plate.

[0008] Further optimize the technical scheme, the rear end of installation shell is connected with rear shell, and the height of rear shell is less than the height of installation shell, and the connecting plate is located below the rear shell after the flexible screen is retracted.

[0009] Further optimize the technical scheme, the screen winding mechanism includes winding shaft and return spring;

[0010] Winding shaft, rotatably installed in the inside of installation shell, and the upper end of flexible screen is wound on the surface of winding shaft;

[0011] Return spring, set in the end of winding shaft, and the return spring is torsion spring, and provides rotation reset force for winding shaft.

[0012] Further optimize the technical scheme, the rotary control mechanism includes transmission gear, trigger plate, engagement plate and drive mechanism;

[0013] Transmission gear, fixed on the surface of control shaft;

[0014] Trigger plate, set between the inside of installation shell and installation shell and constitute horizontal sliding structure;

[0015] Engagement plate, set in the left and right ends of trigger plate, and the engagement plate is distributed in up-down staggered shape, and the engagement plate and transmission gear constitute meshing connection;

[0016] Drive mechanism, and the horizontal movement of trigger plate is driven by being connected with trigger plate.

[0017] Further optimize the technical scheme, the drive mechanism includes drive plate, drive gear and control motor;

[0018] Drive plate, set in the middle of trigger plate;

[0019] The driving gear is arranged below the driving plate and is in meshing connection with the driving plate;

[0020] The control motor is installed in the interior of the mounting shell, and an output shaft of the control motor is connected with the driving gear.

[0021] Compared with the prior art, the utility model has the advantages that:

[0022] (1) The first connecting frame and the second connecting frame can provide stable downward thrust for the connecting plate, so that the position of the connecting plate is kept stable, and the flexible curtain is also kept stable, which can effectively resist wind blowing or external disturbance, so that the flexible curtain can keep good stability during use.

[0023] (2) The reset spring provides a rotating driving force for the winding shaft, so that the winding shaft can automatically rotate to wind the flexible curtain, and the flexible curtain is unwound by pulling the connecting plate, so that an additional power driving source is not needed on the winding shaft, and the winding and unwinding of the flexible curtain can be kept stable.

[0024] (3) The movement of the trigger plate can provide power for the rotation of the transmission gear, so that only one set of power source is needed to control the movement of the trigger plate, and the two sets of transmission gears can be synchronously controlled to rotate, so that the first connecting frame and the second connecting frame are controlled, and the control is more efficient and energy-saving. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0026] Figure 2 It is a rear view structure schematic diagram of the utility model;

[0027] Figure 3 It is a mounting shell split structure schematic diagram of the utility model;

[0028] Figure 4 It is a flexible curtain winding structure schematic diagram of the utility model;

[0029] Figure 5 It is a second connecting frame three-dimensional structure schematic diagram of the utility model.

[0030] In the drawing: 1, mounting shell; 2, rear shell; 3, flexible curtain; 4, winding shaft; 5, reset spring; 6, connecting plate; 7, first connecting frame; 8, second connecting frame; 9, control shaft; 10, transmission gear; 11, trigger plate; 12, meshing plate; 13, driving plate; 14, driving gear; 15, control motor. DETAILED DESCRIPTION

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figures 1-5 Example 1: This utility model provides the following technical solution: A stable projection screen includes a mounting shell 1. A screen rewinding mechanism is provided inside the mounting shell 1. A flexible screen 3 is connected below the screen rewinding mechanism. The flexible screen 3 is housed inside the mounting shell 1 by the screen rewinding mechanism. A connecting plate 6 is fixedly connected below the flexible screen 3, and the width of the connecting plate 6 is greater than the thickness of the flexible screen 3. A first connecting frame 7 is rotatably connected above the connecting plate 6, and a second connecting frame 8 is rotatably connected above the first connecting frame 7. The first connecting frame 7 and the second connecting frame 8 are symmetrically arranged about the center line of the connecting plate 6. A control shaft 9 is fixedly connected to the upper end of the second connecting frame 8. A rotation control mechanism is connected to the outside of the control shaft 9 to control the rotation of the control shaft 9.

[0033] When the flexible screen 3 is used, the support effect of the first connecting frame 7 and the second connecting frame 8 provides vertical control force to the connecting plate 6, enabling it to move. The movement of the connecting plate 6, combined with the automatic rotation around the roller 4, achieves the control of the opening and closing of the flexible screen 3. After the flexible screen 3 is lowered, the first connecting frame 7 and the second connecting frame 8 keep the connecting plate 6 stable, thereby keeping the flexible screen 3 stable.

[0034] Example 2: Based on Example 1, the length of the first connecting frame 7 and the length of the second connecting frame 8 are further disclosed, and the length of the first connecting frame 7 is less than half the length of the connecting plate 6. The rear end of the mounting shell 1 is connected to the rear shell 2, and the height of the rear shell 2 is less than the height of the mounting shell 1. After the flexible curtain 3 is retracted, the connecting plate 6 is located below the rear shell 2.

[0035] After the connecting plate 6 moves up and the flexible screen 3 is retracted, the first connecting frame 7 and the second connecting frame 8 can be folded and stored under the rear shell 2 without affecting the overall appearance of the mounting shell 1.

[0036] Example 3: Based on Example 1, a curtain rewinding mechanism is further disclosed, including a winding shaft 4 and a return spring 5. The winding shaft 4 is rotatably mounted inside the mounting housing 1. The upper end of the flexible curtain 3 is wound around the surface of the winding shaft 4. The return spring 5 is located at the end of the winding shaft 4 and is a torsion spring, providing rotational return force for the winding shaft 4. The rotation control mechanism includes a transmission gear 10, a trigger plate 11, a meshing plate 12, and a drive mechanism. The transmission gear 10 is fixed to the surface of the control shaft 9. The trigger plate 11 is located inside the mounting housing 1 and forms a horizontal sliding structure between the trigger plate 1 and the mounting housing 1. The meshing plates 12 are located at the left and right ends of the trigger plate 11, and the meshing plates 12 are staggered vertically. The meshing plates 12 and the transmission gear 10 are meshed together. The drive mechanism is connected to the trigger plate 11 and drives the trigger plate 11 to move horizontally. The drive mechanism includes a drive plate 13, a drive gear 14 and a control motor 15. The drive plate 13 is located in the middle of the trigger plate 11. The drive gear 14 is located below the drive plate 13 and is meshed with the drive plate 13. The control motor 15 is installed inside the mounting housing 1, and the output shaft of the control motor 15 is connected to the drive gear 14.

[0037] When controlling the rewinding of the flexible screen 3, the drive gear 14 is rotated by the control motor 15, which in turn drives the trigger plate 11 to move through the meshing between the drive gear 14 and the drive plate 13. The control motor 15 can be a brushless motor or a servo motor. When the trigger plate 11 moves, it drives the meshing plate 12 and the transmission gear 10 to mesh, which in turn drives the control shaft 9 to rotate. The control shafts 9 located at the left and right ends of the mounting housing 1 will rotate in opposite directions, driving the second connecting frame 8 and the first connecting frame 7 to rotate, which pulls the connecting plate 6 upward. When the connecting plate 6 moves upward, the winding shaft 4 automatically rotates under the action of the return spring 5, thus rewinding the flexible screen 3.

[0038] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0039] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stable projection screen, comprising a mounting shell (1), wherein a screen rewinding mechanism is provided inside the mounting shell (1), and a flexible screen (3) is connected below the screen rewinding mechanism, wherein the flexible screen (3) is stored inside the mounting shell (1) by means of the screen rewinding mechanism. Its features are: A connecting plate (6) is fixedly connected to the bottom of the flexible screen (3), and the width of the connecting plate (6) is greater than the thickness of the flexible screen (3). A first connecting frame (7) is rotatably connected to the top of the connecting plate (6), and a second connecting frame (8) is rotatably connected to the top of the first connecting frame (7). The first connecting frame (7) and the second connecting frame (8) are symmetrically arranged about the center line of the connecting plate (6). A control shaft (9) is fixedly connected to the upper end of the second connecting frame (8). A rotation control mechanism is connected to the outside of the control shaft (9) to control the rotation of the control shaft (9).

2. The stable projection screen according to claim 1, characterized in that: The length of the first connecting frame (7) is equal to the length of the second connecting frame (8), and the length of the first connecting frame (7) is less than half the length of the connecting plate (6).

3. A stable projection screen according to claim 1, characterized in that: The rear end of the mounting shell (1) is connected to a rear shell (2), and the height of the rear shell (2) is less than the height of the mounting shell (1). When the flexible curtain (3) is retracted, the connecting plate (6) is located below the rear shell (2).

4. A stable projection screen according to claim 1, characterized in that: The curtain winding mechanism includes a winding shaft (4) and a return spring (5); The flexible curtain (3) is wound around the roller (4) and rotated inside the mounting housing (1). The upper end of the flexible curtain (3) is wrapped around the surface of the roller (4). A return spring (5) is provided at the end of the winding shaft (4). The return spring (5) is a torsion spring that provides rotational return force to the winding shaft (4).

5. A stable projection screen according to claim 1, characterized in that: The rotation control mechanism includes a transmission gear (10), a trigger plate (11), a meshing plate (12), and a drive mechanism; The transmission gear (10) is fixed on the surface of the control shaft (9); The trigger plate (11) is disposed inside the mounting shell (1) and between the mounting shell (1) to form a horizontal sliding structure; The meshing plates (12) are located at the left and right ends of the trigger plate (11), and the meshing plates (12) are staggered vertically, and the meshing plates (12) and the transmission gear (10) form a meshing connection. The drive mechanism is connected to the trigger plate (11) to drive the horizontal movement of the trigger plate (11).

6. A stable projection screen according to claim 5, characterized in that: The drive mechanism includes a drive plate (13), a drive gear (14), and a control motor (15); The drive board (13) is located in the middle of the trigger board (11); The drive gear (14) is disposed below the drive plate (13) and forms a meshing connection with the drive plate (13); A control motor (15) is installed inside the mounting housing (1), and the output shaft of the control motor (15) is connected to the drive gear (14).

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