Display screen opening and closing device of a projection system

Abstract

The utility model relates to the technical field of projector display screen, concretely to a display screen opening and closing device of projection system, including the card frame, the inside joint of card frame has the display screen, one side fixedly connected with the flat cable of display screen, the outside of flat cable is sleeved with the mounting plate, the left and right sides of mounting plate top all are equipped with the recess, the inside screw thread connection of recess has the connecting screw, the side of mounting plate near recess is equipped with the handle slot, the inside rotation of handle slot is connected with the pivot, one end of pivot is fixedly connected with the rotating plate, the utility model's advantage lies in: when needing to disassemble display screen and maintain replacement, the finger goes into the finger groove, turns the rotating plate in the handle slot up and turns ninety degrees, then the finger goes into the pull hole, can lift the mounting plate up, can take out the display screen inserted in the main body, reach the purpose of convenient disassembly and installation, and the outside of mounting plate has no convex object, does not affect the installation of other external components.

Description

Technical Field

[0001] This utility model relates to the field of projector display screen technology, and in particular to a display screen opening and closing device for a projection system. Background Technology

[0002] A projector LCD screen opening and closing device is a mechanical or optical mechanism used to control the opening and closing of a projector's LCD screen. Its main functions include providing a convenient operating method when maintaining the projector and controlling the projection of light during the projection process. One way to achieve this is by controlling the arrangement of liquid crystal molecules to adjust the light transmittance, thereby realizing the opening and closing of the projection.

[0003] Research into existing technologies has revealed that current projector displays control the projection on and off via a motherboard. Therefore, damage to the display screen will affect the projection's operation. Existing displays are typically plugged into the main body and secured with screws, resulting in a tight fit that makes disassembly difficult and hinders repair. Therefore, this invention proposes a display screen opening and closing device for a projection system. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a display screen opening and closing device for a projection system.

[0006] The purpose of this utility model is achieved through the following technical solution: a display screen opening and closing device for a projection system, including a frame, a display screen is snapped into the frame, a ribbon cable is fixedly connected to one side of the display screen, a mounting plate is sleeved on the outside of the ribbon cable, grooves are provided on both the left and right sides of the top of the mounting plate, connecting screws are threaded into the grooves, a handle groove is provided on the side of the mounting plate near the groove, a rotating shaft is rotatably connected to the handle groove, a rotating plate is fixedly connected to one end of the rotating shaft, a pull hole is provided inside the rotating plate, a finger groove is provided on the side of the mounting plate near the handle groove, and a magnet is fixedly connected to the bottom of the rotating plate; A through groove is provided in the center of the mounting plate, and positioning grooves are provided on both the left and right sides of the mounting plate near the through groove. A positioning strip is engaged inside the positioning groove, and a protective frame is fixedly connected to one side of the positioning strip.

[0007] Preferably, an iron sheet is embedded in the side of the mounting plate near the magnet, the mounting plate is made of plastic, the magnet is embedded inside the rotating plate, and the magnet is circular in shape.

[0008] By adopting the above technical solution, the magnet and the iron sheet are attracted to each other, which avoids the rotating plate from shaking and causing noise. Under the premise that the rotating plate and the mounting plate are in close contact, it does not affect the finger's ability to press the rotating plate.

[0009] Preferably, the groove is a circular groove, the connecting screw consists of a head and a screw rod, the bottom of the head is welded with the screw rod, and the depth of the groove is greater than the thickness of the head.

[0010] By adopting the above technical solution, the groove can hide the head of the connecting screw, preventing the head from protruding and affecting the installation of external components.

[0011] Preferably, the handle groove is a rectangular groove, the finger groove is an arc-shaped groove, the finger groove is located on one side of the handle groove, and the finger groove is connected to the handle groove.

[0012] By adopting the above technical solution, the handle groove can be easily hidden to avoid the rotating plate protruding and affecting the installation of external components, and the finger groove can be easily rotated out of the handle groove.

[0013] Preferably, the rotating plate is a rectangular plate, the thickness of the rotating plate is less than the depth of the handle groove, the size of the rotating plate is adapted to the size of the handle groove, and the pull hole is a semi-circular hole.

[0014] By adopting the above technical solution, after the rotating plate is flipped upwards by 90 degrees, the mounting plate can be lifted upwards by inserting a finger into the pull hole, thus facilitating disassembly and installation.

[0015] Preferably, the through groove is a rectangular groove, the positioning strip and the protective frame are both made of rubber, the positioning strip is a semi-cylinder, there are two positioning strips, the two positioning strips are respectively fused to the left and right sides of the protective frame, the size of the protective frame is adapted to the size of the through groove, and a rectangular groove is opened inside the protective frame, the size of the rectangular groove is larger than the size of the ribbon cable.

[0016] By adopting the above technical solution, the positioning strip and protective frame made of rubber can prevent hard burrs from scratching the cabling.

[0017] Compared with the prior art, the present invention has the following advantages: 1. The display screen opening and closing device of this projection system is equipped with a rotating plate. A handle groove is provided on the side of the mounting plate near the groove. A rotating shaft is rotatably connected inside the handle groove. One end of the rotating shaft is fixedly connected to the rotating plate. A pull hole is provided inside the rotating plate. A finger groove is provided on the side of the mounting plate near the handle groove. When the display screen needs to be disassembled for maintenance or replacement, the finger enters the finger groove and rotates the rotating plate inside the handle groove upward by 90 degrees. Then, the finger enters the pull hole to lift the mounting plate upward, which makes it easy to take out the display screen inserted into the main body. This achieves the purpose of easy disassembly and installation. Furthermore, there are no protruding objects on the outside of the mounting plate, so it does not affect the installation of other external components. 2. The display screen opening and closing device of this projection system has a protective frame. A through groove is opened in the center of the mounting plate, and positioning grooves are opened on both the left and right sides of the mounting plate near the through groove. Positioning strips are engaged inside the positioning grooves, and a protective frame is fixedly connected to one side of the positioning strips. When in use, the protective frame can be inserted into the through groove, and the positioning strips on both sides of the protective frame are engaged with the positioning grooves on both sides of the through groove. The rubber protective frame can prevent hard burrs from scratching the ribbon cable, thus achieving the purpose of protecting the ribbon cable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the rotating plate of this utility model; Figure 3 This is a schematic diagram of the structure of the protective frame of this utility model; Figure 4 This utility model Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] In the diagram: 1-Card frame, 2-Display screen, 3-Flat cable, 4-Mounting plate, 5-Groove, 6-Connecting screw, 7-Handle groove, 8-Spindle, 9-Rotating plate, 10-Pull hole, 11-Finger groove, 12-Magnet, 13-Through groove, 14-Positioning strip, 15-Protective frame. Detailed Implementation

[0020] Additional aspects and advantages of this invention will be further set forth in the description which follows in conjunction with the accompanying drawings, in part of which will be obvious from the description or may be learned by practice of the invention.

[0021] like Figure 1-2As shown, a display screen opening and closing device for a projection system includes a frame 1, a display screen 2 is snapped into the frame 1, a ribbon cable 3 is welded to one side of the display screen 2, a mounting plate 4 is sleeved on the outside of the ribbon cable 3, grooves 5 are provided on both the left and right sides of the top of the mounting plate 4, connecting screws 6 are threaded into the grooves 5, a handle groove 7 is provided on the side of the mounting plate 4 near the grooves 5, a rotating shaft 8 is rotatably connected inside the handle groove 7, a rotating plate 9 is fused to one end of the rotating shaft 8, a pull hole 10 is provided inside the rotating plate 9, a finger groove 11 is provided on the side of the mounting plate 4 near the handle groove 7, and a magnet 12 is embedded in the bottom of the rotating plate 9.

[0022] With the above settings, when the display screen 2 needs to be disassembled for repair or replacement, the finger enters the finger groove 11 and flips the rotating plate 9 in the handle groove 7 upward by 90 degrees. Then, the finger enters the pull hole 10 and the mounting plate 4 is lifted upward, which makes it easy to take out the display screen 2 inserted into the main body. This achieves the purpose of easy disassembly and installation. Furthermore, there are no protruding objects on the outside of the mounting plate 4, so it does not affect the installation of other external components. like Figure 1 and Figure 3-4 As shown, a through groove 13 is provided in the center of the mounting plate 4, and positioning grooves are provided on both the left and right sides of the mounting plate 4 near the through groove 13. A positioning strip 14 is snapped into the inside of the positioning groove, and a protective frame 15 is welded to one side of the positioning strip 14. With the above settings, when in use, the protective frame 15 can be inserted into the through groove 13, and the positioning strips 14 on both sides of the protective frame 15 can be engaged with the positioning grooves on both sides of the through groove 13. The rubber protective frame 15 can prevent hard burrs from scratching the ribbon cable 3, thus achieving the purpose of protecting the ribbon cable 3. As a preferred technical solution of this utility model, an iron sheet is embedded in the side of the mounting plate 4 near the magnet 12. The mounting plate 4 is made of plastic. The magnet 12 is embedded in the interior of the rotating plate 9 and is circular in shape.

[0023] As a preferred technical solution of this utility model, the groove 5 is a circular groove, the connecting screw 6 is composed of a head and a screw rod, the bottom of the head is welded with the screw rod, and the depth of the groove 5 is greater than the thickness of the head.

[0024] As a preferred technical solution of this utility model, the handle groove 7 is a rectangular groove, the finger groove 11 is an arc-shaped groove, the finger groove 11 is located on one side of the handle groove 7, and the finger groove 11 is connected to the handle groove 7.

[0025] As a preferred technical solution of this utility model, the rotating plate 9 is a rectangular plate, the thickness of the rotating plate 9 is less than the depth of the handle groove 7, the size of the rotating plate 9 is adapted to the size of the handle groove 7, and the pull hole 10 is a semi-circular hole.

[0026] As a preferred technical solution of this utility model, the through groove 13 is a rectangular groove, the positioning strip 14 and the protective frame 15 are both made of rubber, the positioning strip 14 is a semi-cylinder, there are two positioning strips 14, the two positioning strips 14 are respectively fused to the left and right sides of the protective frame 15, the size of the protective frame 15 is adapted to the size of the through groove 13, and a rectangular groove is opened inside the protective frame 15, the size of the rectangular groove is larger than the size of the ribbon cable 3.

[0027] The working process of this utility model is as follows: S1. When the display screen 2 needs to be disassembled for repair or replacement, insert your finger into the finger groove 11 and rotate the rotating plate 9 in the handle groove 7 upwards by 90 degrees. S2. Then, by inserting your finger into the pull hole 10, you can lift the mounting plate 4 upwards, making it easy to remove the display screen 2 inserted into the main body. S3. After the repair and replacement are completed, insert the protective frame 15 into the through groove 13. The positioning strips 14 on both sides of the protective frame 15 are engaged with the positioning grooves on both sides of the through groove 13. The ribbon cable 3 can pass through the protective frame 15 for subsequent installation.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A display screen opening and closing device for a projection system, characterized in that: The device includes a frame (1), a display screen (2) is attached inside the frame (1), a ribbon cable (3) is fixedly connected to one side of the display screen (2), a mounting plate (4) is sleeved on the outside of the ribbon cable (3), grooves (5) are provided on the left and right sides of the top of the mounting plate (4), a connecting screw (6) is threaded inside the groove (5), a handle groove (7) is provided on the side of the mounting plate (4) near the groove (5), a rotating shaft (8) is rotatably connected inside the handle groove (7), a rotating plate (9) is fixedly connected to one end of the rotating shaft (8), a pull hole (10) is provided inside the rotating plate (9), a finger groove (11) is provided on the side of the mounting plate (4) near the handle groove (7), and a magnet (12) is fixedly connected to the bottom of the rotating plate (9). The mounting plate (4) has a through groove (13) at its center. The mounting plate (4) has positioning grooves on both the left and right sides near the through groove (13). A positioning strip (14) is snapped into the inside of the positioning groove. A protective frame (15) is fixedly connected to one side of the positioning strip (14).

2. The display screen opening and closing device of a projection system according to claim 1, characterized in that: The mounting plate (4) has an iron sheet embedded in the side near the magnet (12). The mounting plate (4) is made of plastic. The magnet (12) is embedded in the inside of the rotating plate (9). The magnet (12) is circular in shape.

3. The display screen opening and closing device of a projection system according to claim 1, characterized in that: The groove (5) is a circular groove, and the connecting screw (6) consists of a head and a screw rod. The screw rod is welded to the bottom of the head, and the depth of the groove (5) is greater than the thickness of the head.

4. The display screen opening and closing device of a projection system according to claim 1, characterized in that: The handle groove (7) is a rectangular groove, and the finger groove (11) is an arc-shaped groove. The finger groove (11) is located on one side of the handle groove (7), and the finger groove (11) is connected to the handle groove (7).

5. The display screen opening and closing device of a projection system according to claim 1, characterized in that: The rotating plate (9) is a rectangular plate. The thickness of the rotating plate (9) is less than the depth of the handle groove (7). The size of the rotating plate (9) is adapted to the size of the handle groove (7). The pull hole (10) is a semi-circular hole.

6. The display screen opening and closing device of a projection system according to claim 1, characterized in that: The through groove (13) is a rectangular groove. The positioning strip (14) and the protective frame (15) are both made of rubber. The positioning strip (14) is a semi-cylinder. There are two positioning strips (14). The two positioning strips (14) are respectively fused to the left and right sides of the protective frame (15). The size of the protective frame (15) is adapted to the size of the through groove (13). A rectangular groove is opened inside the protective frame (15). The size of the rectangular groove is larger than the size of the ribbon cable (3).

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