Lightweight alloy support structure for projection screens

Abstract

The utility model discloses a kind of lightweight alloy support structures for projection screen, including two positioning frames, the both ends of positioning frame are provided with support plate, the opposite side of two support plates is evenly provided with sliding slot, slidingly connected with connecting plate in sliding slot, transmission block is set between two connecting plate, connecting plate and the transmission block are hinged by hinge, two connecting plates are respectively provided with transmission plate, limiting rod is slidably connected on two transmission plates, transmission mechanism is set between two positioning frames.In this application, when the screen support structure needs to be stored and transported, the connecting plate can be first collected into the sliding slot, the size is then adjusted to the minimum, and then the limiting rod is pulled out of the transmission plate. Then fold up the two positioning frames. This can further reduce the volume of the support structure, making it easier to store. Conversely, the foldable screen support structure can be easily unfolded, improving the installation efficiency of the screen support structure.

Description

Technical Field

[0001] This utility model relates to the field of screen support structure technology, and in particular to a lightweight alloy support structure for projection screens. Background Technology

[0002] With the increasing application of laser TVs and projection screens, the demand for support structures for these screens is growing. Currently, the main support structures for projection screens on the market include traditional aluminum alloy structures. These structures use the same cross-section design as steel structures and rely primarily on screws and corner brackets for connection. Assembly is cumbersome, time-consuming, and labor-intensive, resulting in a poor user experience. Therefore, there is a need for a projection screen support structure that is lightweight and quick to install. Summary of the Invention

[0003] The purpose of this utility model is to provide a lightweight alloy support structure for projection screens in order to solve the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A lightweight alloy support structure for a projection screen includes two positioning frames. Each positioning frame has a support plate at both ends. Each support plate has a groove on its opposite side. A connecting plate is slidably connected within the groove. A transmission block is provided between the two connecting plates. The connecting plates and the transmission block are hinged together by hinges. A transmission plate is provided on each of the two connecting plates. A limit rod is slidably connected to the two transmission plates. A transmission mechanism is provided between the two positioning frames to control the two positioning frames to move closer to or separate from each other.

[0005] Preferably, the transmission mechanism includes a first transmission cylinder disposed inside the slide groove, the first transmission cylinder being rotatably connected to the inner wall of the slide groove, the first transmission cylinder having a threaded groove inside, the connecting plate having a placement hole inside, a fixed seat being disposed at one end of the placement hole, a transmission shaft being rotatably connected to the fixed seat, the outer side of one end of the transmission shaft having a thread, and the transmission shaft being threadedly connected to the threaded groove.

[0006] Preferably, the transmission block has a transmission groove, and a first rotating shaft is rotatably connected to the bottom of the transmission groove. A first bevel gear is provided on the first rotating shaft. Two limiting seats are symmetrically arranged inside the transmission groove. A second rotating shaft is rotatably connected to the limiting seats. A second bevel gear is provided at one end of the two second rotating shafts. The second bevel gear and the first bevel gear are meshed and connected. One end of the first rotating shaft extends to the outside of the transmission block and is connected to a knob.

[0007] Preferably, a second transmission cylinder is provided between the transmission shaft and the second rotating shaft, and the second transmission cylinder and the transmission shaft are slidably connected.

[0008] Preferably, a limiting groove is provided on the inner side of the second transmission cylinder, and limiting blocks adapted to the limiting groove are provided on the outer sides of both the second rotating shaft and the transmission shaft, and the limiting blocks and the limiting groove are slidably connected.

[0009] Preferably, a transmission seat is provided on the outer side of the second transmission cylinder, a strip-shaped hole is opened at the bottom of the transmission groove, the bottom of the transmission seat extends from the strip-shaped hole to the outer side of the transmission block, a positioning seat is provided at the bottom of the transmission block, and a transmission rod is rotatably connected to the positioning seat.

[0010] Preferably, both ends of the transmission rod are threaded, the threads at both ends of the transmission rod are screwed in opposite directions, the transmission rod and the transmission seat are threadedly connected, and a rotating wheel is provided on the transmission rod.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: In this application, when the curtain support structure needs to be stored and transported, the connecting plate can be first placed into the slide groove, the size can be adjusted to the minimum, the limiting rod can be pulled out of the transmission plate, and then the two positioning frames can be folded up. This can further reduce the volume of the support structure, making it convenient to store. Conversely, the foldable curtain support structure is easy to unfold, improving the installation efficiency of the curtain support structure. Attached Figure Description

[0012] Figure 1 A three-dimensional structural diagram of the support structure provided according to an embodiment of the present utility model is shown; Figure 2 A side view of the support structure provided according to an embodiment of the present invention is shown; Figure 3 A schematic diagram of the combination structure of the limiting rod and the transmission plate according to an embodiment of the present utility model is shown; Figure 4 A cross-sectional view of the transmission block according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the hinged structure of the connecting plate and the transmission block according to an embodiment of the present utility model is shown; Figure 6 A cross-sectional view of the support plate provided according to an embodiment of the present invention is shown.

[0013] Legend: 1. Positioning frame; 2. Support plate; 3. Transmission block; 4. Connecting plate; 5. Slide groove; 6. First transmission cylinder; 7. Threaded groove; 8. Storage hole; 9. Transmission groove; 10. First rotating shaft; 11. Knob; 12. First bevel gear; 13. Limiting seat; 14. Second rotating shaft; 15. Second bevel gear; 16. Transmission seat; 17. Second transmission cylinder; 18. Limiting groove; 19. Strip hole; 20. Transmission plate; 21. Limiting rod; 22. Transmission rod; 23. Positioning seat; 24. Rotary wheel; 25. Transmission shaft; 26. Fixed seat; 27. Limiting block. Detailed Implementation

[0014] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-6 This utility model provides a technical solution: A lightweight alloy support structure for a projection screen includes two positioning frames 1. Each positioning frame 1 has a support plate 2 at both ends. Each support plate 2 has a groove 5 on its opposite side. A connecting plate 4 is slidably connected in the groove 5. A transmission block 3 is provided between the two connecting plates 4. The connecting plates 4 and the transmission block 3 are hinged to each other by a hinge. A transmission plate 20 is provided on each of the two connecting plates 4. A limit rod 21 is slidably connected on the two transmission plates 20. A transmission mechanism is provided between the two positioning frames 1 to control the two positioning frames 1 to move closer to each other or separate from each other. The support structure is preferably made of 6005A-T6 aluminum alloy (density 2.7g / cm³, tensile strength 270MPa).

[0016] Specifically, such as Figure 4 , Figure 5 and Figure 6 As shown, the transmission mechanism includes a first transmission cylinder 6 disposed inside the slide 5. The first transmission cylinder 6 is rotatably connected to the inner wall of the slide 5. A threaded groove 7 is provided inside the first transmission cylinder 6. A storage hole 8 is provided inside the connecting plate 4. A fixed seat 26 is provided at one end of the storage hole 8. A transmission shaft 25 is rotatably connected to the fixed seat 26. A thread is provided on the outer side of one end of the transmission shaft 25. The transmission shaft 25 and the threaded groove 7 are threadedly connected. The transmission shaft 25 is located inside the storage hole 8.

[0017] Specifically, such as Figure 4 and Figure 6As shown, a transmission groove 9 is provided inside the transmission block 3. A first rotating shaft 10 is rotatably connected to the bottom of the transmission groove 9. A first bevel gear 12 is provided on the first rotating shaft 10. Two limiting seats 13 are symmetrically arranged inside the transmission groove 9. A second rotating shaft 14 is rotatably connected to the limiting seat 13. A second bevel gear 15 is provided at one end of the two second rotating shafts 14. The second bevel gear 15 and the first bevel gear 12 are meshed and connected. One end of the first rotating shaft 10 extends to the outside of the transmission block 3 and is connected to a knob 11.

[0018] Specifically, such as Figure 4 and Figure 6 As shown, a second transmission cylinder 17 is provided between the transmission shaft 25 and the second rotating shaft 14. The second transmission cylinder 17 and the transmission shaft 25 are slidably connected, and the second transmission cylinder 17 and the second rotating shaft 14 are slidably connected. A limit groove 18 is provided on the inner side of the second transmission cylinder 17, and a limit block 27 adapted to the limit groove 18 is provided on the outer side of both the second rotating shaft 14 and the transmission shaft 25. The limit block 27 and the limit groove 18 are slidably connected.

[0019] Specifically, such as Figure 4 and Figure 6 As shown, a transmission seat 16 is provided on the outer side of the second transmission cylinder 17, and a strip hole 19 is opened at the bottom of the transmission groove 9. The bottom of the transmission seat 16 extends from the strip hole 19 to the outer side of the transmission block 3. A positioning seat 23 is provided at the bottom of the transmission block 3, and a transmission rod 22 is rotatably connected to the positioning seat 23. Both ends of the transmission rod 22 are threaded, and the threads at both ends of the transmission rod 22 are screwed in opposite directions. The transmission rod 22 and the transmission seat 16 are threadedly connected, and a rotating wheel 24 is provided on the transmission rod 22.

[0020] In summary, the lightweight alloy support structure for projection screen provided in this embodiment allows for the following: Rotating the knob 11 causes the first rotating shaft 10 to rotate, which in turn drives the first bevel gear 12. The first bevel gear 12 then drives two second bevel gears 15 to rotate synchronously. The second bevel gears 15 drive the second rotating shaft 14 to rotate, which in turn drives the transmission shaft 25 via the second transmission cylinder 17. The two transmission shafts 25, via the first transmission cylinder 6, cause the two positioning frames 1 to move closer together or separate from each other, thus adjusting the size of the screen support structure. When the screen support structure needs to be stored and transported, the connecting plate 4 can be first placed into the slide groove 5, and the size adjusted to its minimum. Then, the limiting rod 21 can be pulled out of the transmission plate 20, and the two positioning frames 1 can be folded up, further reducing the volume of the support structure.

Claims

1. A lightweight alloy support structure for a projection screen, comprising two positioning frames (1), characterized in that, The positioning frame (1) is provided with support plates (2) at both ends. Each of the two support plates (2) has a sliding groove (5) on one side opposite to the other. A connecting plate (4) is slidably connected in the sliding groove (5). A transmission block (3) is provided between the two connecting plates (4). The connecting plate (4) and the transmission block (3) are hinged to each other by a hinge. A transmission plate (20) is provided on each of the two connecting plates (4). A limit rod (21) is slidably connected on the two transmission plates (20). A transmission mechanism is provided between the two positioning frames (1) to control the two positioning frames (1) to move closer to each other or separate from each other.

2. The lightweight alloy support structure for a projection screen according to claim 1, characterized in that, The transmission mechanism includes a first transmission cylinder (6) disposed inside the slide groove (5), the first transmission cylinder (6) and the inner wall of the slide groove (5) are rotatably connected, the first transmission cylinder (6) has a threaded groove (7) inside, the connecting plate (4) has a storage hole (8) inside, a fixed seat (26) is provided at one end of the storage hole (8), a transmission shaft (25) is rotatably connected to the fixed seat (26), a thread is provided on the outer side of one end of the transmission shaft (25), and the transmission shaft (25) and the threaded groove (7) are threadedly connected.

3. The lightweight alloy support structure for a projection screen according to claim 2, characterized in that, The transmission block (3) has a transmission groove (9) inside. The bottom of the transmission groove (9) is rotatably connected to a first rotating shaft (10). A first bevel gear (12) is provided on the first rotating shaft (10). Two limiting seats (13) are symmetrically arranged inside the transmission groove (9). A second rotating shaft (14) is rotatably connected to the limiting seat (13). A second bevel gear (15) is provided at one end of the two second rotating shafts (14). The second bevel gear (15) and the first bevel gear (12) are meshed and connected. One end of the first rotating shaft (10) extends to the outside of the transmission block (3) and is connected to a knob (11).

4. The lightweight alloy support structure for a projection screen according to claim 3, characterized in that, A second transmission cylinder (17) is provided between the transmission shaft (25) and the second rotating shaft (14). The second transmission cylinder (17) and the transmission shaft (25) are slidably connected, and the second transmission cylinder (17) and the second rotating shaft (14) are slidably connected.

5. A lightweight alloy support structure for a projection screen according to claim 4, characterized in that, The second transmission cylinder (17) has a limiting groove (18) on its inner side. The second rotating shaft (14) and the transmission shaft (25) are both provided with limiting blocks (27) that are adapted to the limiting groove (18). The limiting blocks (27) and the limiting groove (18) are slidably connected.

6. The lightweight alloy support structure for a projection screen according to claim 4, characterized in that, A transmission seat (16) is provided on the outside of the second transmission cylinder (17). A strip hole (19) is opened at the bottom of the transmission groove (9). The bottom of the transmission seat (16) extends from the strip hole (19) to the outside of the transmission block (3). A positioning seat (23) is provided at the bottom of the transmission block (3). A transmission rod (22) is rotatably connected to the positioning seat (23).

7. A lightweight alloy support structure for a projection screen according to claim 6, characterized in that, Both ends of the transmission rod (22) are threaded, and the threads at both ends of the transmission rod (22) are screwed in opposite directions. The transmission rod (22) and the transmission seat (16) are threaded together, and a rotating wheel (24) is provided on the transmission rod (22).

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