Sealed dustproof projector

Abstract

The invention discloses a sealed dustproof projector, relates to the technical field of projectors, and solves the problems that sometimes, the projector needs to be hung at a high position for use, the projector is fixedly connected with a hanging bracket through screws, the screws are very inconvenient to disassemble when the projector is located at the high position, and the projector is easy to fall in the disassembly process to cause economic loss. And the safety of workers is greatly threatened due to long-time disassembly at a high place. A sealed dustproof projector comprises a ceiling, a connecting rod and a projector body, a through groove is formed in the lower end face of the projector body, sliding grooves are formed in the upper portions of the front portions and the rear portions of the two sides of the inner wall of the through groove, sliding plates are slidably connected to the inner sides of the sliding grooves, and clamping plates are installed on the opposite sides of the outer surfaces of the two sliding plates. The bottom plate can be disassembled and assembled by pushing the bottom plate towards the inner side of the through groove, use is convenient, time and labor are saved, and meanwhile the connection stability of the connection terminal B and the connection terminal A can be enhanced.

Description

Technical Field

[0001] This invention relates to the field of projector technology, specifically to a sealed and dustproof projector. Background Technology

[0002] A projector, also known as a projector, is a device that projects images or videos onto a screen. Projectors are widely used in homes, offices, schools, and entertainment venues. They project or reflect images or videos onto a screen using digital light processing technology or LCD liquid crystal imaging technology. Projectors can accept various signal sources, such as computers, mobile phones, DVDs, and DV cameras, to receive corresponding image and video signals for playback. Projectors are widely used in education, business, engineering, and home applications.

[0003] During long-term use, dust tends to accumulate on the top and inside of the projector. Existing projectors do not have corresponding dustproof structures to prevent dust, resulting in unsatisfactory dustproof performance and affecting the user experience.

[0004] Patent CN217279239U discloses a projector with dustproof functionality. By installing a support rod, dustproof plate, and fan on the top of the projector body, it dissipates heat from the projector body while blowing away dust from the top. An anti-static coating eliminates static electricity in the dust, reducing dust adhesion to the dustproof plate surface. A dustproof heat dissipation device is installed inside the ventilation opening to cool the internal components of the projector body, solving the aforementioned technical problems. However, sometimes projectors need to be suspended at high altitudes, and these are usually fixed to a bracket with screws. This makes it very inconvenient to remove the screws when the projector needs maintenance, as it is at a high position. Furthermore, disassembly during this process can easily cause the projector to fall, resulting in economic losses. Prolonged disassembly of projectors at heights also poses a significant safety hazard to workers. Therefore, this solution does not meet the existing requirements. To address this, we propose a sealed, dustproof projector. Summary of the Invention

[0005] The purpose of this invention is to provide a sealed and dustproof projector to solve the problems mentioned in the background art, such as the fact that projectors sometimes need to be suspended at a high place for use, and that suspended projectors are fixed to the bracket with screws. This makes it very inconvenient to remove the screws when the projector needs to be repaired, and the projector is prone to falling during the disassembly process, resulting in economic losses. Furthermore, the safety of workers is greatly threatened when disassembling projectors at a high place for a long time.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sealed and dustproof projector, comprising a ceiling, a connecting rod, and a projector body. A through groove is provided on the lower end face of the projector body. Sliding grooves are provided on the upper front and rear sides of both sides of the inner wall of the through groove. Sliding plates are slidably connected to the inner sides of the sliding grooves. A retaining plate is installed on one side of the opposite outer surface of the two sliding plates. A groove is provided below the sliding groove. Two U-shaped blocks are connected inside the groove via two springs A. An inclined surface A is provided above the outer surface of the U-shaped blocks, and an inclined surface B is provided below the outer surface of the U-shaped blocks. A retaining plate is provided on the inner side of each of the four U-shaped blocks. A horizontal plate has a push rod installed in the middle of its upper surface and wedge blocks installed on both sides of its upper surface. A connecting plate is fixedly connected to the lower surface of the horizontal plate, and a base plate is provided on the lower surface of the connecting plate. Inclined surfaces C are provided on both sides of the outer surface of the base plate. A snap-fit ​​groove is provided on the rear end face of the horizontal plate. A connecting terminal B is installed on the inner wall of the snap-fit ​​groove. Fixing blocks are provided on both sides of the snap-fit ​​groove. A circular groove is provided on one side of the opposite outer surface of the two fixing blocks. A spring B is fixedly installed on the inner wall of the circular groove. The other end of the spring B is fixedly connected to a connecting terminal A. A connecting terminal A is provided on the rear end face of the inner wall of the through groove.

[0007] Preferably, the ceiling and the connecting rod are fixedly connected by a base, and the connecting rod is fixedly connected to the rear end face of the projector body by a mounting bracket.

[0008] Preferably, a handle is fixedly installed on the lower end face of the base plate, and a sealing ring is fixedly connected to the upper end face of the base plate through a U-shaped groove, with the outer surface of the sealing ring fitting against the inner wall of the groove.

[0009] Preferably, the height of the groove is less than or equal to the distance from the top surface of the card plate to the top surface of the U-shaped block.

[0010] Preferably, square plates are installed on both the front and rear faces of the slide plate, and square grooves are provided on both the front and rear faces of the inner wall of the slide groove, with the square plates inserted into the inner side of the square grooves.

[0011] Preferably, the inclined surface A is adapted to the wedge block, and the inclined surface C is adapted to the inclined surface B.

[0012] Preferably, the distance between the upper surface of the base plate and the lower surface of the U-shaped block is greater than the distance between the upper surface of the wedge block and the lower surface of the card plate.

[0013] Preferably, the two ends of the card plate are arc-shaped plates, and the lower end surface of the arc-shaped plate is in contact with the upper end surface of the U-shaped block.

[0014] Preferably, the connecting terminal A is fixedly connected to the inner wall of the through groove through a limiting groove, the limiting post is adapted to the limiting hole, and the connecting terminal A is adapted to the connecting terminal B.

[0015] Preferably, the lower half of the U-shaped block is shorter than the upper half of the U-shaped block, and the length of the U-shaped block is less than the depth of the groove.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention comprises a horizontal plate, a base plate, a groove, spring A, a U-shaped block, a wedge block, a clamping plate, and inclined surfaces A, B, and C. When the projector body needs maintenance, the operator simply pushes the base plate into the groove using the handle. The base plate moves upward, causing the connecting plate and the horizontal plate to move upward, which in turn moves the wedge block upward. The wedge block contacts inclined surface A, pushing the U-shaped block to one side. Under the action of spring A, the U-shaped block moves into the groove until both ends of the horizontal plate contact the top of the outer side of the U-shaped block. At this point, the lower end of the clamping plate is in contact with the upper end of the wedge block. Then, the base plate is pulled downward using the handle. The base plate moves downward, causing the connecting plate, the horizontal plate, and the wedge block to move downward inside the groove. The clamping plate moves downward, and the sliding plate moves inside the slide groove. Since the height of the slide groove is less than or equal to the distance from the top surface of the clamping plate to the top surface of the U-shaped block, jamming is prevented. If the U-shaped block is moved too far down, it will get stuck inside the U-shaped block. At this time, the clamping plate is stuck between the two inclined surfaces A, limiting the U-shaped block. During the downward movement of the base plate, connecting plate, and horizontal plate, inclined surface B contacts inclined surface C, pushing the U-shaped block further into the groove until the base plate, connecting plate, and horizontal plate leave the inside of the through groove. Under the action of spring A, the U-shaped block moves outward and fits against both ends of the clamping plate, exposing connecting terminal A and connecting terminal B, which can be inspected. After the inspection is completed, the base plate is aligned with the through groove by the handle and moved upward. During the upward movement of the base plate, the push rod moves upward and pushes the clamping plate upward, releasing the limitation on the U-shaped block. Under the action of spring A, the U-shaped block moves out of the groove, and the horizontal plate is stuck inside the U-shaped block. This invention can complete the disassembly and installation of the base plate by pushing the base plate into the through groove. It is convenient to use and saves time and effort.

[0018] 2. The present invention is provided with a snap-fit ​​groove, a limiting post, a spring B, a connecting terminal B, and a limiting hole. When the base plate is installed and located inside the U-shaped block, the limiting post is snapped into the inside of the limiting hole under the action of the spring B, thereby positioning the connecting terminal B and ensuring the stability of its connection with the connecting terminal A. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a bottom view of the projector body of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the shell cross plate of the present invention;

[0022] Figure 4 This is a front sectional view of the through-slot of the present invention;

[0023] Figure 5 This is a side sectional view of the through groove of the present invention;

[0024] Figure 6 This is a top view of the horizontal plate of the present invention;

[0025] Figure 7 This is a partial structural diagram of the fixing block of this invention.

[0026] In the diagram: 1. Ceiling; 2. Connecting rod; 3. Projector body; 4. Through groove; 5. Base plate; 6. Connecting plate; 7. Wedge block; 8. Horizontal plate; 9. U-shaped block; 10. Connecting terminal A; 11. Spring A; 12. Sealing ring; 13. Clamping plate; 14. Slide plate; 15. Fixing block; 16. Connecting terminal B; 17. Groove; 18. Limiting hole; 19. Slide groove; 20. Inclined surface A; 21. Inclined surface B; 22. Inclined surface C; 23. Snap-fit ​​groove; 24. Limiting post; 25. Spring B; 26. Circular groove; 27. Push rod. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Please see Figures 1 to 7One embodiment of the present invention provides a sealed and dustproof projector, comprising a ceiling 1, a connecting rod 2, and a projector body 3. A through groove 4 is provided on the lower end face of the projector body 3. Slide grooves 19 are provided on the upper front and rear sides of both sides of the inner wall of the through groove 4. Slide plates 14 are slidably connected to the inner side of the slide grooves 19. A retaining plate 13 is installed on the opposite side of the outer surface of the two slide plates 14. A groove 17 is provided below the slide grooves 19. Two U-shaped blocks 9 are connected to the inside of the groove 17 via two springs A11. An inclined surface A20 is provided above the outer surface of the U-shaped blocks 9, and an inclined surface B21 is provided below the outer surface of the U-shaped blocks 9. A horizontal plate 8 is provided on the inner side of the four U-shaped blocks 9. A push rod 27 is installed in the middle of the upper end face of the horizontal plate 8. Wedge blocks 7 are installed on both sides of the upper end face of the horizontal plate 8. A connecting plate 6 is fixedly connected to the lower end face of the horizontal plate 8. A base plate 5 is provided on the lower end face of the connecting plate 6. Inclined surfaces C22 are provided on both sides of the outer surface of the base plate 5. A snap-fit ​​groove 23 is provided on the rear end face of the horizontal plate 8. A connecting terminal B16 is installed on the inner wall of the snap-fit ​​groove 23. Fixing blocks 15 are provided on both sides of the snap-fit ​​groove 23. A circular groove 26 is provided on one side of the outer surface of the two fixing blocks 15. A spring B25 is fixedly installed on the inner wall of the circular groove 26. The other end of the spring B25 is fixedly connected to 27. A connecting terminal A10 is provided on the rear end face of the inner wall of the through groove 4.

[0029] Furthermore, the ceiling 1 and the connecting rod 2 are fixedly connected by the base, and the connecting rod 2 is fixedly connected to the rear end face of the projector body 3 by the mounting bracket, thereby improving the stability of the projector body 3.

[0030] Furthermore, a handle is fixedly installed on the lower end face of the base plate 5, and a sealing ring 12 is fixedly connected to the upper end face of the base plate 5 through a U-shaped groove. The outer surface of the sealing ring 12 fits against the inner wall of the through groove 4, making it convenient to push or pull out the base plate by the handle, thereby improving the sealing performance of the connection between the base plate 5 and the through groove 4.

[0031] Furthermore, the height of the chute 19 is less than or equal to the distance from the top surface of the card plate 13 to the top surface of the U-shaped block 9, to prevent the card plate 13 from moving down too much and getting stuck inside the U-shaped block 9.

[0032] Furthermore, square plates are installed on both the front and rear faces of the skateboard 14, and square grooves are provided on both the front and rear faces of the inner wall of the slide groove 19. The square plates are inserted into the inner side of the square grooves, which improves the stability of the skateboard 14 during movement.

[0033] Furthermore, the inclined surface A20 is adapted to the wedge block 7, and the inclined surface C22 is adapted to the inclined surface B21. When the wedge block 7 moves upward, it contacts the inclined surface A20, which can push the U-shaped block 9 into the groove 17. When the inclined surface C22 contacts the inclined surface B21, it can push the U-shaped block 9 into the groove 17.

[0034] Furthermore, the distance between the upper end face of the base plate 5 and the lower end face of the U-shaped block 9 is greater than the distance between the upper end face of the wedge block 7 and the lower end face of the clamping plate 13, to prevent the base plate 5 from contacting the lower end face of the U-shaped block 9 when it moves upward toward the inside of the through groove 4, thus affecting the continued upward movement of the base plate 5.

[0035] Furthermore, the two ends of the card plate 13 are arc-shaped plates, and the lower end surface of the arc-shaped plate is in contact with the upper end surface of the U-shaped block 9 to prevent the card plate 13 from moving downward under the action of gravity.

[0036] Furthermore, the connecting terminal A10 is fixedly connected to the inner wall of the through groove 4 through a limiting groove, the limiting post 24 is adapted to the limiting hole 18, and the connecting terminal A10 is adapted to the connecting terminal B16, thereby improving the stability of the connection of the connecting terminal A10. The limiting post 24 can be inserted into the inner side of the limiting hole 18.

[0037] Furthermore, the lower half of the U-shaped block 9 is shorter than the upper half of the U-shaped block 9, and the length of the U-shaped block 9 is less than the depth of the groove 17, so the U-shaped block 9 can be completely inserted into the inside of the groove 17.

[0038] Working principle: When the projector body 3 needs maintenance, the operator only needs to push the base plate 5 into the through groove 4 using the handle. The base plate 5 moves upward, causing the connecting plate 6 and the horizontal plate 8 to move upward, which in turn moves the wedge block 7 upward. The wedge block 7 contacts the inclined surface A20, pushing the U-shaped block 9 to one side. Under the action of the spring A11, the U-shaped block 9 moves into the groove 17 until both ends of the horizontal plate 8 contact the top of the outer side of the U-shaped block 9. At this time, the lower end face of the clamping plate 13 is in contact with the upper end face of the wedge block 7. Then, the base plate 5 is pushed into the through groove 4 using the handle. Plate 5 is pulled down, and base plate 5 moves downward, causing connecting plate 6, horizontal plate 8, and wedge block 7 to move downward inside the through groove 4. Clamping plate 13 moves downward, and sliding plate 14 moves inside the slide groove 19. Since the height of slide groove 19 is less than or equal to the distance from the top surface of clamping plate 13 to the top surface of U-shaped block 9, to prevent clamping plate 13 from moving down too far, it engages inside U-shaped block 9. At this time, clamping plate 13 is positioned between two inclined surfaces A20, limiting the U-shaped block 9. During the downward movement of base plate 5, connecting plate 6, and horizontal plate 8, inclined surface B21 contacts inclined surface C22, thus engaging U-shaped block 9. The U-shaped block 9 continues to push inward into the groove 17 until the base plate 5, connecting plate 6, and horizontal plate 8 leave the inside of the through groove 4. Under the action of spring A11, the U-shaped block 9 moves outward and fits against both ends of the clamping plate 13, exposing the connecting terminal A10 and connecting terminal B16, which can then be inspected. After the inspection is completed, the base plate 5 is aligned with the through groove 4 using the handle, and the base plate 5 is moved upward. During the upward movement of the base plate 5, the push rod 27 moves upward, pushing the clamping plate 13 upward and releasing the limit on the U-shaped block 9. Under the action of spring A11, the U-shaped block 9... The horizontal plate 8 moves outward from the groove 17 and is locked inside the U-shaped block 9. When the base plate 5 is installed, when the base plate 5 is installed and located inside the U-shaped block 9, the limiting post 24 is locked inside the limiting hole 18 under the action of the spring B25 to position the connecting terminal B16 and ensure the stability of its connection with the connecting terminal A10. The present invention can complete the disassembly and installation of the base plate 5 by pushing the base plate 5 into the through groove 4. It is convenient to use, saves time and effort, and can enhance the stability of the connection between the connecting terminal B16 and the connecting terminal A10.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A sealed and dustproof projector, comprising a ceiling (1), a connecting rod (2), and a projector body (3), characterized in that: The projector body (3) has a through groove (4) on its lower end face. Slide grooves (19) are provided on the upper front and rear sides of the inner wall of the through groove (4). A sliding plate (14) is slidably connected to the inner side of the slide groove (19). A retaining plate (13) is installed on the opposite side of the outer surfaces of the two sliding plates (14). A groove (17) is provided below the slide groove (19). A U-shaped block (9) is connected inside the groove (17) by two springs A (11). An inclined surface A (20) is provided above the outer surface of the U-shaped block (9), and an inclined surface B (21) is provided below the outer surface of the U-shaped block (9). A horizontal plate (8) is provided on the inner side of the four U-shaped blocks (9). A push rod (27) is installed in the middle of the upper end face of the horizontal plate (8). The upper end face is equipped with wedge blocks (7) on both sides. The lower end face of the horizontal plate (8) is fixedly connected to a connecting plate (6). The lower end face of the connecting plate (6) is provided with a base plate (5). The outer surface of the base plate (5) is provided with inclined surfaces C (22) on both sides. The rear end face of the horizontal plate (8) is provided with a snap-fit ​​groove (23). The inner wall of the snap-fit ​​groove (23) is equipped with a connecting terminal B (16). The two sides of the snap-fit ​​groove (23) are provided with fixing blocks (15). The outer surface of the two fixing blocks (15) is provided with a circular groove (26) on one side opposite to each other. The inner wall of the circular groove (26) is fixedly installed with a spring B (25). The other end of the spring B (25) is fixedly connected with (27). The rear end face of the inner wall of the through groove (4) is provided with a connecting terminal A (10).

2. The sealed and dustproof projector according to claim 1, characterized in that: The ceiling (1) and the connecting rod (2) are fixedly connected by a base, and the connecting rod (2) and the rear end face of the projector body (3) are fixedly connected by a mounting bracket.

3. A sealed and dustproof projector according to claim 1, characterized in that: A handle is fixedly installed on the lower end face of the base plate (5), and a sealing ring (12) is fixedly connected to the upper end face of the base plate (5) through a U-shaped groove. The outer surface of the sealing ring (12) is in contact with the inner wall of the through groove (4).

4. A sealed and dustproof projector according to claim 1, characterized in that: The height of the chute (19) is less than or equal to the distance from the top surface of the card plate (13) to the top surface of the U-shaped block (9).

5. A sealed and dustproof projector according to claim 1, characterized in that: The front and rear faces of the slide plate (14) are both equipped with square plates, and the front and rear faces of the inner wall of the slide groove (19) are both provided with square grooves, and the square plates are inserted into the inner side of the square grooves.

6. A sealed and dustproof projector according to claim 1, characterized in that: The inclined surface A (20) is adapted to the wedge block (7), and the inclined surface C (22) is adapted to the inclined surface B (21).

7. A sealed and dustproof projector according to claim 1, characterized in that: The distance between the upper end face of the base plate (5) and the lower end face of the U-shaped block (9) is greater than the distance between the upper end face of the wedge block (7) and the lower end face of the card plate (13).

8. A sealed and dustproof projector according to claim 1, characterized in that: The two ends of the card plate (13) are arc-shaped plates, and the lower end surface of the arc-shaped plate is in contact with the upper end surface of the U-shaped block (9).

9. A sealed and dustproof projector according to claim 1, characterized in that: The connecting terminal A (10) is fixedly connected to the inner wall of the through groove (4) through a limiting groove, the limiting post (24) is adapted to the limiting hole (18), and the connecting terminal A (10) is adapted to the connecting terminal B (16).

10. A sealed and dustproof projector according to claim 1, characterized in that: The lower half of the U-shaped block (9) is shorter than the upper half of the U-shaped block (9), and the length of the U-shaped block (9) is less than the depth of the groove (17).

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