A movie screen with positioning function

Abstract

The utility model discloses a movie curtain with positioning function relates to projection auxiliary equipment technical field, including base, the both ends of base top are connected with two vertical seat, and the vertical seat is opened with vertical adjusting groove in front -back direction, and the two adjusting blocks of adjusting groove middle slide -connected have, and the two lateral walls of adjusting block are fixed with the limiting strip, and the lateral wall of vertical seat is opened with the limiting slot of sliding up and down for limiting strip, and the outside wall of limiting strip is fixed with the contact piece, and the both ends of two vertical seat all are opened with the positioning groove in left -right direction, and the both ends of vertical seat all are provided with a plurality of positioning grooves, and the two positioning grooves of setting up the upper positioning board horizontal intercalation in two vertical seat upper end, and the two positioning grooves of setting up the lower positioning board horizontal intercalation in two vertical seat lower end, and the two adjusting blocks of vertical seat upper and lower are placed on the upper positioning board and lower positioning board respectively, and the four corner ends of curtain are pasted in the front wall of four adjusting blocks respectively, can carry out the fine adjustment of vertical position to promote the stability of curtain placement.

Description

Technical Field

[0001] This utility model relates to the field of projection auxiliary equipment technology, specifically to a movie screen with positioning function. Background Technology

[0002] With the diversification of movie-watching needs, from professional cinemas to home theaters and outdoor temporary screenings, higher demands are being placed on the adaptability and installation flexibility of movie screens. Currently, most movie screens use a fixed frame structure, with the screen attached to the frame at the four corners using Velcro.

[0003] In actual use, it was found that this simple Velcro fastening method is easily snagged and falls off or becomes misaligned. Due to the lack of positioning, the adjustment process requires manual repositioning, otherwise the screen will be wrinkled or misaligned. When the screen height needs to be adjusted to adapt to different projection distances or venue heights, the screen and Velcro need to be disassembled and repositioned. Users can only judge whether the screen position is appropriate by visual observation, making it difficult to guarantee the accuracy of the horizontality and height of the top and bottom edges of the screen. Especially when two people work together to install it, the screen is prone to tilting due to misjudgment. Utility Model Content

[0004] To solve the above problems, this utility model proposes a movie screen with positioning function, including a base, two vertical seats connected to the top two ends of the base, vertical adjustment grooves opened in the front-back direction of the vertical seats, two adjustment blocks slidably connected in the adjustment grooves, limit strips fixed to the two side walls of the adjustment blocks, limit grooves opened in the side walls of the vertical seats for the limit strips to slide up and down, contact pieces fixed to the outer side walls of the limit strips, the contact pieces contacting the side walls of the vertical seats, positioning grooves opened through the upper and lower ends of the two vertical seats in the left-right direction, multiple positioning grooves are provided at the upper and lower ends of the vertical seats, an upper positioning plate is provided and horizontally inserted into the two positioning grooves at the upper end of the two vertical seats, a lower positioning plate is provided and horizontally inserted into the two positioning grooves at the lower end of the two vertical seats, the upper and lower adjustment blocks of the vertical seats are respectively placed on the upper positioning plate and the lower positioning plate, and the four corners of the screen are respectively pasted to the front walls of the four adjustment blocks.

[0005] Furthermore, a male Velcro strip is fixed to the outer wall of the contact piece, and a female Velcro strip is fixed to the rear wall of the vertical seat. The connection stability is further improved by attaching the male Velcro strip to the female Velcro strip.

[0006] Furthermore, the front wall of the vertical seat is engraved with scale lines on the side of the adjustment groove.

[0007] Furthermore, the distance between adjacent positioning slots at the upper end of the vertical base is the same as the distance between adjacent positioning slots at the lower end, and three positioning slots are provided at both the upper and lower ends of the vertical base.

[0008] Furthermore, a flange is fixed to the bottom of the vertical base, and the flange and the base are directly connected by screws.

[0009] The beneficial effects of this utility model are as follows: 1. Through the sliding engagement of the adjusting block and the vertical base adjusting groove, combined with the plug-in structure of the upper and lower positioning plates, and the cooperation of the limiting strips on both sides of the adjusting block with the limiting groove, the adjusting block is effectively prevented from coming off during sliding, enabling convenient fine-tuning of the screen's vertical position. The positioning grooves at both ends of the vertical base are symmetrically distributed, working in conjunction with the upper and lower positioning plates to ensure symmetrical installation of the screen and avoid screen deformation caused by structural asymmetry. Compared to traditional fixed installations of screens, there is no need to disassemble the entire frame or re-drill holes; simply pushing the adjusting block is sufficient to adjust the position.

[0010] 2. By combining the adhesive force of the male and female Velcro straps with the supporting force of the positioning plate, a double positioning structure is formed, which improves the positioning stability of the screen and prevents the screen from shifting or falling off due to external tension during use; the scale lines engraved on the front wall of the vertical stand provide a visual reference for the positioning of the adjustment block, which is convenient for subsequent maintenance and calibration. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the left-side structure of the central vertical support; Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.

[0012] The reference numerals in the attached drawings are explained as follows: 1. Base; 2. Vertical seat; 21. Adjustment groove; 22. Limiting groove; 23. Positioning groove; 24. Scale line; 3. Adjustment block; 4. Limiting strip; 5. Contact piece; 6. Upper positioning plate; 7. Lower positioning plate; 8. Male Velcro strap; 9. Female Velcro strap; 10. Flange. Detailed Implementation

[0013] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The present invention will be further described below with reference to the accompanying drawings: A movie screen with positioning function, such as Figure 1 , Figure 2 and Figure 3 As shown, the screen includes a base 1, with two vertical seats 2 connected to the top two ends of the base 1. Each vertical seat 2 has a vertical adjustment groove 21 in the front-to-back direction. Two adjustment blocks 3 are slidably connected in the adjustment groove 21. Limiting strips 4 are fixed to the two side walls of the adjustment blocks 3. Limiting grooves 22 are provided on the side walls of the vertical seats 2 for the limiting strips 4 to slide up and down. Contact pieces 5 are fixed to the outer side walls of the limiting strips 4, and the contact pieces 5 contact the side walls of the vertical seats 2. Positioning grooves 23 are provided through the vertical seats 2 at both the top and bottom ends in the left-to-right direction. Multiple positioning grooves 23 are provided at both the top and bottom ends of the vertical seats 2. An upper positioning plate 6 is horizontally inserted into the two positioning grooves 23 at the top of the two vertical seats 2, and a lower positioning plate 7 is horizontally inserted into the two positioning grooves 23 at the bottom of the two vertical seats 2. The two adjustment blocks 3 of the vertical seats 2 are placed on the upper positioning plate 6 and the lower positioning plate 7, respectively. The four corners of the screen are respectively attached to the front walls of the four adjustment blocks 3. This allows for fine-tuning of the vertical position of the screen.

[0016] like Figure 2 and Figure 3 As shown, in this embodiment, the outer wall of the contact piece 5 is fixed with a male Velcro strip 8, and the rear wall of the vertical seat 2 is fixed with a female Velcro strip 9. The connection stability is further improved by attaching the male Velcro strip 8 to the female Velcro strip.

[0017] like Figure 1 and Figure 3 As shown, in this embodiment, the front wall of the vertical seat 2 is engraved with scale lines 24 on the side of the adjustment groove 21; the distance between adjacent positioning grooves 23 at the upper end of the vertical seat 2 and the distance between adjacent positioning grooves 23 at the lower end are the same, and three positioning grooves 23 are provided at both the upper and lower ends of the vertical seat 2; a flange 10 is fixed at the bottom of the vertical seat 2, and the flange 10 and the base 1 are directly connected by screws.

[0018] The working principle of this utility model is as follows: The vertical seat 2 is connected to the base 1 by a screw through the flange 10, which effectively prevents the vertical seat 2 from tilting or shifting during use. At the same time, the flange 10 increases the contact area between the vertical seat 2 and the base 1, dispersing the pressure of the vertical seat 2 on the base 1 and avoiding excessive local stress on the base 1, which could lead to damage.

[0019] The vertical position of the screen is adjusted by the sliding engagement structure between the adjusting block 3 and the vertical base 2. The adjusting block 3 and the adjusting groove 21 of the vertical base 2 are in clearance fit. The limiting strips 4 on both sides of the adjusting block 3 are inserted into the limiting groove 22 of the vertical base 2. The contact strips restrict the left and right movement of the adjusting block 3 and prevent the adjusting block 3 from coming out of the side of the adjusting groove 21. At the same time, the engagement between the limiting strips 4 and the limiting groove 22 can also ensure that the adjusting block 3 remains vertical during the sliding process, avoiding the screen deformation caused by the tilting of the adjusting block 3.

[0020] The positioning slots 23 at both ends of the vertical stand 2 are equally spaced and number three in each slot. Users can select different positions according to the required screen height. After determining the position, the positioning plate is inserted into the two parallel positioning slots 23 of the two vertical stands 2. After the positioning plate is inserted into the positioning slot 23, its upper surface makes close contact with the lower surface of the adjusting block 3, providing upward support for the adjusting block 3. The mating structure of the male and female Velcro straps further enhances the positioning stability of the adjusting block 3. The hook surface of the male Velcro strap 8 and the rough surface of the female Velcro strap have strong adhesive force. When the adjusting block 3 moves to the target position, the male and female Velcro straps adhere to each other, firmly stabilizing the adjusting block 3 in the corresponding position of the adjusting slot 21, preventing upward pulling caused by slight collisions. The scale lines 24 engraved on the front wall of the vertical stand 2 provide a visual reference for the positioning of the adjusting block 3, facilitating subsequent maintenance and calibration.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A movie screen with positioning function, comprising a base (1), characterized in that: The base (1) has two vertical seats (2) connected to its top ends. The vertical seats (2) have vertical adjustment grooves (21) in the front-back direction. Two adjustment blocks (3) are slidably connected in the adjustment grooves (21). Limiting strips (4) are fixed to the two side walls of the adjustment blocks (3). Limiting grooves (22) for the limiting strips (4) to slide up and down are opened on the side walls of the vertical seats (2). Contact pieces (5) are fixed to the outer side walls of the limiting strips (4). The contact pieces (5) contact the side walls of the vertical seats (2). The two vertical seats (2) have vertical adjustment grooves (22) in the front-back direction. Positioning slots (23) are provided through the left and right directions at both ends of the vertical base (2). Multiple positioning slots (23) are provided at both the upper and lower ends of the vertical base (2). An upper positioning plate (6) is provided and is horizontally inserted into the two positioning slots (23) at the upper end of the two vertical bases (2). A lower positioning plate (7) is provided and is horizontally inserted into the two positioning slots (23) at the lower end of the two vertical bases (2). The two adjustment blocks (3) at the upper and lower ends of the vertical base (2) are respectively placed on the upper positioning plate (6) and the lower positioning plate (7). The four corners of the curtain are respectively pasted to the front wall of the four adjustment blocks (3).

2. A movie screen with positioning function according to claim 1, characterized in that: The outer wall of the contact piece (5) is fixed with a male Velcro strip (8), and the rear wall of the vertical base (2) is fixed with a female Velcro strip (9). The connection stability is further improved by attaching the male Velcro strip (8) to the female Velcro strip.

3. A movie screen with positioning function according to claim 1, characterized in that: The front wall of the vertical seat (2) is engraved with scale lines (24) on the side of the adjustment groove (21).

4. A movie screen with positioning function according to claim 1, characterized in that: The distance between adjacent positioning slots (23) at the upper end of the vertical base (2) is the same as the distance between adjacent positioning slots (23) at the lower end. There are three positioning slots (23) at both the upper and lower ends of the vertical base (2).

5. A movie screen with positioning function according to claim 1, characterized in that: The bottom of the vertical seat (2) is fixed with a flange (10), and the flange (10) and the base (1) are directly connected by a screw.

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