Projection screen structure

Abstract

The utility model provides a projection screen structure which comprises a projection screen and a fixing base, a sliding table is arranged on the fixing base, clamping assemblies are arranged on the two sides of the sliding table, the projection screen is arranged between the clamping assemblies, and stretching moving tables are arranged at the bottoms of the clamping assemblies. A movable threaded rod is arranged on the stretching movable table, a positioning assembly is arranged on the movable threaded rod, and a sliding base is arranged at the bottom of the stretching movable table. According to the utility model, the clamping assembly and the positioning assembly are matched with the sliding table and the stretching moving table to unfold and level the soft curtain, so that the force applied to each edge is uniform, and the water ripple wrinkling phenomenon caused by non-uniform force applied to each edge of the soft curtain is avoided, so that the soft curtain is prevented from being damaged in the use process. And the side edge is not easy to have macroscopic buckling deformation.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of projection, in particular to a projection screen structure. Background Art

[0002] At present, the projection screens used in the market are mainly divided into hard screens and soft screens. The projection screen can improve the display effect of the projector and is an indispensable part of the projection system. With the expansion of the size of the projection screen, the retractable projection soft screen has received more and more attention. Among them, the retractable projection soft screen includes electric screen, floor-pull screen and electric lifting screen. The soft screen is fixed mainly by using springs, elastic ropes and other objects with retractable elastic force to make the screen form a plane and fix it on the surrounding frame.

[0003] When unfolding, existing soft screens generally provide uniform tension through a surrounding frame or side elastic parts. The advantage of this soft screen is that it can be rolled up for storage and convenient for transportation. However, after the soft screen is unfolded, the screen is not flat enough and is prone to wrinkling, resulting in visible warping and deformation on the side of the projection screen, affecting the user's viewing experience. Utility Model Content

[0004] In order to solve the deficiencies of the current technology, the utility model combines the existing technology and provides a projection screen structure based on practical applications.

[0005] The technical solution of the utility model is as follows:

[0006] A projection screen structure includes a projection screen and a fixed base, wherein a sliding platform is arranged on the fixed base, clamping components are arranged on both sides of the sliding platform, the projection screen is arranged between the clamping components, an extension movable platform is arranged at the bottom of the clamping components, a movable threaded rod is arranged on the extension movable platform, a positioning component is arranged on the movable threaded rod, and a sliding base is arranged at the bottom of the extension movable platform.

[0007] Furthermore, the clamping assembly includes a clamping seat, a clamping rotating member is arranged on one side of the clamping seat close to the projection screen, a rotating motor is arranged on the other side of the clamping seat, and a sliding motor is arranged on the side of the clamping seat.

[0008] Furthermore, the clamping rotating member is connected to the rotating motor, and the sliding motor is connected to the sliding platform.

[0009] Furthermore, the top of the projection screen is fixed on the clamping rotating member, and the extending movable platform is fixed on the clamping seat.

[0010] Furthermore, the positioning assembly includes a positioning seat, a positioning clamp is provided on one side of the positioning seat close to the projection screen, and a moving motor is provided on the other side of the positioning seat.

[0011] Furthermore, the bottom of the projection screen is fixed on a positioning clamp, and the moving motor is connected to the moving threaded rod.

[0012] Furthermore, a sliding groove is provided on the sliding base, and positioning holes are provided at both ends of the sliding base.

[0013] Furthermore, a sliding connection block is provided at the bottom of the extending movable platform, and the sliding connection block is arranged in the sliding groove.

[0014] Furthermore, fixing holes are provided at both ends of the fixed base, and limiting blocks are provided at both ends of the sliding platform.

[0015] Beneficial effects of the utility model:

[0016] The utility model unfolds and flattens the soft curtain by means of a clamping component, a positioning component, a sliding platform and an extending moving platform, so that the force on each side is uniform, thereby avoiding the phenomenon of water ripples and wrinkles caused by uneven force on each side of the soft curtain. As a result, during the use of the soft curtain, the side edges will not easily have warping deformation visible to the naked eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Attached Figure 2 This is a schematic diagram of the fixed base structure of the utility model.

[0019] Attached Figure 3 It is a schematic diagram of the structure of the stretching mobile platform of the utility model.

[0020] Attached Figure 4 This is a schematic diagram of the structure of the sliding base of the utility model.

[0021] Numbers shown in the figure: 1. Projection screen; 2. Fixed base; 3. Sliding table; 4. Clamping assembly; 5. Extendable moving table; 6. Moving threaded rod; 7. Positioning assembly; 8. Sliding base; 9. Clamping seat; 10. Clamping rotating member; 11. Rotating motor; 12. Sliding motor; 13. Positioning seat; 14. Positioning clamping member; 15. Moving motor; 16. Sliding groove; 17. Positioning hole; 18. Sliding connecting block; 19. Fixed hole; 20. Limit block. DETAILED DESCRIPTION

[0022] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.

[0023] like Figure 1-4 The figure is a schematic diagram of the related structures of a projection screen structure provided in this embodiment.

[0024] In this embodiment, the structure is mainly as follows Figure 1 As shown, it includes a projection screen 1 and a fixed base 2, a sliding platform 3 is arranged on the fixed base 2, clamping components 4 are arranged on both sides of the sliding platform 3, the projection screen 1 is arranged between the clamping components 4, an extension movable platform 5 is arranged at the bottom of the clamping component 4, a movable threaded rod 6 is arranged on the extension movable platform 5, a positioning component 7 is arranged on the movable threaded rod 6, and a sliding base 8 is arranged at the bottom of the extension movable platform 5, which is convenient for unfolding and leveling the soft screen, so that the force on each edge is uniform, avoiding the water ripple wrinkling phenomenon caused by uneven force on each edge of the soft screen, so that the side of the soft screen will not easily have visible warping deformation during use, fixing holes 19 are arranged at both ends of the fixed base 2, and limiting blocks 20 are arranged at both ends of the sliding platform 3, which are convenient for disassembling the fixed base 2 and the sliding platform 3.

[0025] like Figure 2 As shown, the clamping assembly 4 includes a clamping seat 9, and a clamping rotating member 10 is arranged on one side of the clamping seat 9 close to the projection screen 1, and the clamping rotating member 10 is connected to a rotating motor 11. A rotating motor 11 is arranged on the other side of the clamping seat 9, and a sliding motor 12 is arranged on the side of the clamping seat 9. The sliding motor 12 is connected to the sliding table 3, which is convenient for clamping and fixing the projection screen 1 while controlling the unfolding speed of the projection screen 1. The top of the projection screen 1 is fixed on the clamping rotating member 10, and the extending movable table 5 is fixed on the clamping seat 9, which is convenient for the extending movable table 5 to cooperate with the unfolding of the projection screen 1 to reduce wrinkling and warping deformation of the projection screen 1.

[0026] like Figure 3 As shown, the positioning assembly 7 includes a positioning seat 13, a positioning clamping member 14 is provided on one side of the positioning seat 13 close to the projection screen 1, and a moving motor 15 is provided on the other side of the positioning seat 13. The moving motor 15 is connected to the moving threaded rod 6 to facilitate clamping and unfolding the projection screen 1. The bottom of the projection screen 1 is fixed on the positioning clamping member 14 to facilitate unfolding the projection screen 1 while avoiding uneven force on the projection screen 1.

[0027] like Figure 4 As shown, a sliding groove 16 is provided on the sliding base 8, positioning holes 17 are provided at both ends of the sliding base 8, and a sliding connecting block 18 is provided at the bottom of the extension movable platform 5. The sliding connecting block 18 is arranged in the sliding groove 16 and is detachably connected. In this way, the extension movable platform 5 can be removed when the soft screen is not in use, which is convenient for the storage and transportation of the soft screen and the extension movable platform 5, thereby reducing the pressure of carrying the soft screen.

[0028] The working principle of this embodiment is as follows:

[0029] First, the sliding table 3 is adjusted according to the width of the projection screen 1, and then the top of the projection screen 1 is fixed with the clamping rotating member 10, and then the bottom of the projection screen 1 is fixed with the positioning clamping member 14. When the projection screen 1 is unfolded, the rotating motor 11 and the moving motor 15 run synchronously to ensure that the projection screen 1 is flat when unfolded.

Claims

1. A projection screen structure, comprising a projection screen and a fixed base, characterized in that: A sliding platform is arranged on the fixed base, clamping assemblies are arranged on both sides of the sliding platform, the projection screen is arranged between the clamping assemblies, an extension movable platform is arranged at the bottom of the clamping assemblies, a movable threaded rod is arranged on the extension movable platform, a positioning assembly is arranged on the movable threaded rod, and a sliding base is arranged at the bottom of the extension movable platform.

2. A projection screen structure according to claim 1, characterized in that: The clamping assembly comprises a clamping seat, a clamping rotating member is arranged on one side of the clamping seat close to the projection screen, a rotating motor is arranged on the other side of the clamping seat, and a sliding motor is arranged on the side of the clamping seat.

3. A projection screen structure according to claim 2, characterized in that: The clamping rotating member is connected to the rotating motor, and the sliding motor is connected to the sliding platform.

4. A projection screen structure according to claim 2, characterized in that: The top of the projection screen is fixed on the clamping rotating member, and the extending movable platform is fixed on the clamping seat.

5. A projection screen structure according to claim 1, characterized in that: The positioning assembly comprises a positioning seat, a positioning clamping piece is arranged on one side of the positioning seat close to the projection screen, and a moving motor is arranged on the other side of the positioning seat.

6. A projection screen structure according to claim 5, characterized in that: The bottom of the projection screen is fixed on the positioning clamping member, and the moving motor is connected to the moving threaded rod.

7. A projection screen structure according to claim 1, characterized in that: The sliding base is provided with a sliding groove, and both ends of the sliding base are provided with positioning holes.

8. A projection screen structure according to claim 7, characterized in that: A sliding connection block is arranged at the bottom of the extending movable platform, and the sliding connection block is arranged in the sliding groove.

9. The projection screen structure according to claim 1, characterized in that: The two ends of the fixed base are provided with fixing holes, and the two ends of the sliding platform are provided with limiting blocks.

Images