Multi-screen folding screen projection device

Abstract

The utility model relates to the technical field of multi-screen folding screens, in particular to a multi-screen folding screen projection device, which comprises a first screen, a fixing frame, a fixing plate, a fixing part, a second screen and a supporting rod, the two fixing frames are connected with the surface of the first curtain, the two fixing plates are arranged, the ends of the two fixing plates are rotationally connected with each other, and the two fixing plates are connected with the first curtain and the second curtain respectively; the number of the supporting rods is two, the two supporting rods are connected with the fixing frames in a sliding mode respectively, the number of the fixing parts is two, the fixing parts are connected with the surface of the second curtain, the supporting rods are provided with limiting assemblies, and the supporting rods are connected with the corresponding fixing parts in a matched mode. When in use, the second curtain is rotated upwards, the supporting rod is pulled out of the fixing frame, the supporting rod is connected with the fixing part on the second curtain in a matched mode, and the supporting rod can support the second curtain; when not in use, the supporting rod is folded, the second curtain is folded down, and the supporting structure is easy to operate, cannot be exposed outside and is convenient to carry and store.

Description

Technical Field

[0001] This utility model relates to the field of multi-screen folding technology, specifically a multi-screen folding projection device. Background Technology

[0002] A folding screen projection system can consist of multiple screens, offering a larger display size, wider field of view, and more content than a standard projector. However, it also requires higher resolution to achieve an immersive visual effect. This provides a complementary solution for special environments or customers with specific requirements. The cost is lower than that of a panoramic screen system. Panoramic screen projection devices use seamless full projection blending technology, which requires multi-channel blending technology. The more channels, the higher the price.

[0003] Chinese Patent CN220603839U discloses a multi-screen folding projection system, including a first screen with two first fixing blocks fixedly connected to one side. The advantages of this invention are: the initial position of the multi-screen folding projection system is with the first and second screens folded. When the second screen is unfolded, a motor is started, and the motor's output shaft rotates, driving a first connecting rod to rotate. Through the action of the first fixing blocks, the second screen rotates, thus completing the unfolding. When the second screen needs to be folded, the motor's output shaft rotates in the opposite direction, driving the first connecting rod to rotate. Through the action of the first fixing blocks, the second screen rotates again. When the second screen rotates to a position level with the first screen, the motor stops rotating, thus reducing the unfolded area of ​​the first and second screens, facilitating transportation.

[0004] However, the above technical solution has the following drawbacks: the two screens in the above multi-screen folding projection have structures such as hinges and connecting rods behind them. After folding, the exposed structures are easily damaged, and the exposed structures occupy space, making it inconvenient to transport and fold up the screens. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a multi-screen folding projection device.

[0006] The technical solution of this utility model is: a multi-screen folding projection device, comprising a first screen, a fixing frame, a fixing plate, a fixing part, a second screen, and a support rod;

[0007] The fixing frame has two surfaces connected to the first curtain, and two fixing plates are provided. The ends of the two fixing plates are rotatably connected to each other. The two fixing plates are respectively connected to the surfaces of the first curtain and the second curtain. The second curtain is located above the first curtain.

[0008] There are two support rods, which are slidably connected to each of the fixing frames. There are two fixing parts that are connected to the surface of the second curtain. The support rods are equipped with limiting components, and the support rods are connected to the corresponding fixing parts.

[0009] Preferably, the limiting component includes a spring and a limiting block;

[0010] The support rod is provided with a sliding groove, the limiting block is slidably connected to the sliding groove, and the spring connects the limiting block and the end of the sliding groove;

[0011] The fixing part has a through hole, through which the support rod passes and the limiting block is pressed against the upper end of the fixing part.

[0012] Preferably, the end of the limiting block is provided with a wedge surface.

[0013] Preferably, the mounting bracket is provided with a mounting groove, the support rod is slidably connected to the mounting groove, and the surface of the support rod is in close contact with the surfaces of the first and second curtains.

[0014] Preferably, both the first and second curtains have grooves on their surfaces, and the support rod has protrusions on its surface, with the protrusions slidingly engaging with the grooves.

[0015] Preferably, it also includes an installation section;

[0016] There are two mounting parts, and the ends of the two mounting parts are rotatably connected to each other. The two mounting parts are respectively connected to the upper ends of two adjacent second screens, and the projection shape of the mounting parts is L-shaped.

[0017] Preferably, the fixing frame is an L-shaped frame, and each fixing frame is provided with reinforcing ribs.

[0018] Preferably, the lower end of the fixing frame is equipped with a counterweight.

[0019] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0020] 1. When using this utility model, rotate the second curtain upward to pull the support rod out from the fixed frame. The support rod is connected to the fixed part on the second curtain and can support the second curtain. When not in use, fold up the support rod and fold the second curtain down. The support structure is simple to operate and will not be exposed, making it easy to transport and store.

[0021] 2. In this utility model, when multiple screens are spliced ​​together, the mounting part is installed on two adjacent second screens, and the rotation axis of the two mounting parts is at the joint of the two sets of screens, so that the joint of the two sets of screens is tighter. Attached Figure Description

[0022] Figure 1 This is a perspective view of a multi-screen folding projection device proposed in this utility model.

[0023] Figure 2 This is a perspective view of another angle of the multi-screen folding projection device proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the structure of a multi-screen folding projection device proposed in this utility model.

[0025] Figure 4 This is a schematic diagram of the folded state of one embodiment of the present invention.

[0026] Figure 5 for Figure 2 A schematic diagram of the internal structure at point A.

[0027] Reference numerals in the attached drawings: 1. First curtain; 2. Fixing frame; 3. Fixing plate; 4. Counterweight; 5. Mounting part; 6. Fixing part; 7. Second curtain; 8. Support rod; 9. Reinforcing rib; 10. Spring; 11. Limiting block. Detailed Implementation

[0028] Example 1

[0029] like Figures 1-5 As shown, the present invention proposes a multi-screen folding projection device, which includes a first screen 1, a fixing frame 2, a fixing plate 3, a fixing part 6, a second screen 7, and a support rod 8.

[0030] The fixing frame 2 has two surfaces that are connected to the first curtain 1. There are two fixing plates 3. The ends of the two fixing plates 3 are rotatably connected to each other. The two fixing plates 3 are respectively connected to the surfaces of the first curtain 1 and the second curtain 7. The second curtain 7 is located above the first curtain 1.

[0031] Furthermore, the fixing frame 2 is an L-shaped frame, and each fixing frame 2 is provided with reinforcing ribs 9, and each fixing frame 2 is provided with a counterweight 4 at its lower end.

[0032] There are two support rods 8, which are slidably connected to each of the fixing frames 2. There are two fixing parts 6 that are connected to the surface of the second curtain 7. The support rods 8 are equipped with limiting components, and the support rods 8 are connected to the corresponding fixing parts 6.

[0033] Furthermore, the mounting bracket 2 is provided with a mounting groove, and the support rod 8 is slidably connected to the mounting groove, with the surface of the support rod 8 closely attached to the surfaces of the first curtain 1 and the second curtain 7.

[0034] Furthermore, the surfaces of the first curtain 1 and the second curtain 7 are both provided with grooves, and the surface of the support rod 8 is provided with protrusions, which are slidably connected to the grooves.

[0035] In this invention, when in use, the second curtain 7 is rotated upwards to pull the support rod 8 out from the fixing frame 2. The support rod 8 is connected to the fixing part 6 on the second curtain 7, and the support rod 8 can support the second curtain 7. When not in use, the support rod 8 is folded up and the second curtain 7 is folded down. The support structure is simple to operate and will not be exposed, making it easy to transport and store.

[0036] Example 2

[0037] like Figures 1-2 and Figure 5 As shown, the multi-screen folding projection device proposed in this utility model, compared with Embodiment 1, has a limiting component including a spring 10 and a limiting block 11.

[0038] The support rod 8 is provided with a sliding groove, the limiting block 11 is slidably connected to the sliding groove, and the spring 10 connects the limiting block 11 and the end of the sliding groove;

[0039] The fixing part 6 is provided with a through hole, the support rod 8 passes through the through hole, and the limiting block 11 is pressed against the upper end of the fixing part 6.

[0040] Furthermore, the end of the limiting block 11 is provided with a wedge surface.

[0041] In this embodiment, when in use, the support rod 8 is pulled upward out of the fixing frame 2, the support rod 8 passes through the fixing part 6, the fixing part 6 presses the wedge surface of the limiting block 11, and the limiting block 11 is pressed into the support rod 8. When the support rod 8 passes through the fixing part 6, the limiting block 11 is pushed out by the spring 10, so that the support rod 8 supports the second curtain 7. When folding is required, the support rod 8 can be retracted into the fixing frame 2. After folding, the support structure will not be exposed to the outside, making it easy to fold up and transport.

[0042] Example 3

[0043] like Figures 1-2 As shown, the multi-screen folding projection device proposed in this utility model, compared with Embodiment 1, also includes a mounting part 5;

[0044] There are two mounting parts 5, and the ends of the two mounting parts 5 are rotatably connected to each other. The two mounting parts 5 are respectively connected to the upper ends of two adjacent second screens 7. The projection shape of the mounting part 5 is L-shaped.

[0045] In this embodiment, when multiple screens are spliced ​​together, the mounting part 5 is installed on two adjacent second screens 7, and the rotation axis of the two mounting parts 5 is at the seam of the two sets of screens, so that the seam of the two sets of screens is more tightly connected.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A multi-screen folding projection device, characterized in that, It includes a first curtain (1), a fixing frame (2), a fixing plate (3), a fixing part (6), a second curtain (7), and a support rod (8); The fixing frame (2) has two surfaces connected to the first curtain (1), and the fixing plate (3) has two surfaces. The ends of the two fixing plates (3) are rotatably connected to each other. The two fixing plates (3) are respectively connected to the surfaces of the first curtain (1) and the second curtain (7). The second curtain (7) is located above the first curtain (1). There are two support rods (8), and the two support rods (8) are slidably connected to each of the fixing frames (2). The fixing part (6) has two surfaces that are connected to the second curtain (7). The support rod (8) is provided with a limiting component, and the support rod (8) is connected to the corresponding fixing part (6).

2. The multi-screen folding projection device according to claim 1, characterized in that, The limiting assembly includes a spring (10) and a limiting block (11); The support rod (8) is provided with a sliding groove, the limiting block (11) is slidably connected to the sliding groove, and the spring (10) connects the limiting block (11) and the end of the sliding groove; The fixing part (6) is provided with a through hole, the support rod (8) passes through the through hole, and the limiting block (11) is pressed against the upper end of the fixing part (6).

3. The multi-screen folding projection device according to claim 2, characterized in that, The end of the limiting block (11) is provided with a wedge surface.

4. The multi-screen folding projection device according to claim 1, characterized in that, The mounting bracket (2) is provided with a mounting groove, and the support rod (8) is slidably connected to the mounting groove. The surface of the support rod (8) is in close contact with the surfaces of the first curtain (1) and the second curtain (7).

5. A multi-screen folding projection device according to claim 4, characterized in that, The surfaces of the first curtain (1) and the second curtain (7) are provided with grooves, and the surface of the support rod (8) is provided with protrusions, which are slidably connected to the grooves.

6. A multi-screen folding projection device according to claim 1, characterized in that, It also includes the installation part (5); There are two mounting parts (5), and the ends of the two mounting parts (5) are rotatably connected to each other. The two mounting parts (5) are respectively connected to the upper ends of two adjacent second screens (7). The projection shape of the mounting part (5) is L-shaped.

7. A multi-screen folding projection device according to claim 1, characterized in that, The fixing frame (2) is an L-shaped frame, and each fixing frame (2) is provided with reinforcing ribs (9).

8. A multi-screen folding projection device according to claim 1, characterized in that, The lower end of each fixed frame (2) is equipped with a counterweight (4).

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