Projection device for computer teaching

Abstract

The utility model provides a projection device for computer teaching, and relates to the technical field of projection equipment, the projection device comprises a projection curtain and a supporting mechanism, the supporting mechanism is arranged below the projection curtain, the supporting mechanism comprises a movable assembly, a telescopic assembly, a base assembly and a mounting assembly, the movable assembly is arranged outside the projection curtain, and the telescopic assembly is arranged outside the base assembly. A telescopic assembly is arranged outside the movable assembly, a base assembly is arranged below the telescopic assembly, through the arrangement of the forking assembly, the two installation shells are forked, the projection curtain is prevented from inclining and collapsing from the front side and the rear side, the stability of the projection curtain is improved, and the use requirement of a user is met; the movable assembly enables the telescopic assembly to incline left, right, front and back, the telescopic assembly is stably placed through the base assembly, and the mounting assembly cooperates with the forking assembly to fork the two mounting shells, so that the projection curtain is conveniently unfolded, and the practicability of the projection device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection equipment, in particular to a projection device for computer teaching. Background Art

[0002] Projection screens are used in movies, offices, home theaters, large conferences and other occasions to display images and video files. The choice of projection screens is different in different spaces. For example, if there are a large number of viewers or if the viewing is horizontal, a wide-viewing angle, low-gain screen should be selected. If the viewing is in a narrow space, a narrow-viewing angle, high-gain screen should be selected. At the same time, choosing a screen with appropriate gain will help improve the contrast of the screen, increase the grayscale of the image, make the color brighter, and increase the visibility of the image. Projection screens are used in computer teaching.

[0003] After searching, the patent number "CN106896636A" mentioned in the text that "a portable projection screen for computer teaching, including a screen and an upper cover, the upper cover is placed on the top of the screen storage slot. The portable projection screen for computer teaching is provided with a positioning suction cup, which can adsorb the plastic base to any flat surface, facilitating the installation and use of the projection screen. The left and right ends of the plastic positioning shaft are provided with threaded holes, and the positioning shaft suction cup is threadedly fastened to the left and right ends of the plastic positioning shaft to play a role of limiting". When in use, through the setting of the positioning suction cup The positioning suction cup can adsorb the plastic base to any flat surface, which is convenient for the installation and use of the projection screen. Through the setting of the plastic positioning shaft, threaded holes are set at both ends of the plastic positioning shaft. The positioning shaft suction cup is threadedly fastened to the left and right ends of the plastic positioning shaft, which plays a role of limiting and preventing the plastic positioning shaft from slipping out of the cylindrical through hole during transfer and transportation. However, the projection device needs to be adsorbed to the wall or plate by the positioning suction cup. When there is no suitable adsorption plane, the projection screen cannot be unfolded, which reduces the practicability of the projection device.

[0004] Therefore, we provide a projection device for computer teaching to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a projection device for computer teaching, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: A projection device for computer teaching, comprising a projection screen and a support mechanism, wherein the support mechanism is arranged below the projection screen;

[0007] The supporting mechanism includes a movable component, a telescopic component, a base component and a mounting component. The movable component is arranged outside the projection screen, the telescopic component is arranged outside the movable component, the base component is arranged below the telescopic component, and the mounting component is arranged below the base component.

[0008] Preferably, the movable assembly includes a rotating plate and a telescopic rod, four rotating plates are rotatably mounted on the bottom of the projection screen, and the telescopic rod is rotatably mounted on the outer side of the rotating plate.

[0009] Preferably, the telescopic assembly comprises a telescopic sleeve and a fixed screw, the telescopic sleeve is slidably mounted on the outer surface of the telescopic rod, and the outer thread of the telescopic sleeve is threadedly mounted with a fixed screw having one end penetrating through and extending into the interior thereof.

[0010] Preferably, the base assembly includes a slider and a base shell, the other end of the telescopic rod is rotatably mounted with the slider, and the outer surface of the slider is slidably mounted with the base shell.

[0011] Preferably, the mounting assembly comprises a mounting shell and movable rods, the mounting shell is fixedly mounted on the bottom of the base shell, and four movable rods are rotatably mounted inside the mounting shell.

[0012] Preferably, a forked assembly is arranged on the outer side of the movable rod, and the forked assembly comprises a threaded block, a center shell and a rotating screw.

[0013] Preferably, a threaded block is rotatably mounted on one end of the movable rod, a center shell is slidably mounted on the outer surface of the threaded block, a rotating screw having one end passing through and extending to the outside of the center shell is rotatably mounted on the inner wall of the center shell, and the outer surface of the rotating screw is connected to the internal thread of the threaded block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. By setting the forked assembly, the two installation shells are forked to prevent the projection screen from tilting and collapsing from the front and back sides, thereby increasing the stability of the projection screen and meeting the user's usage needs.

[0016] 2. Through the setting of the supporting mechanism, the movable component enables the telescopic component to tilt left and right, front and back. The telescopic component is stably placed through the base component. The installation component cooperates with the fork-opening component to fork the two installation shells, which is convenient for unfolding the projection screen and improves the practicality of the projection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0018] Figure 2It is a schematic diagram of the overall explosion structure of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the movable component, base component and installation component of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the installation component and the fork-opening component of the utility model.

[0021] Numbers in the figure: 1. Projection screen; 2. Support mechanism; 21. Movable assembly; 211. Rotating plate; 212. Telescopic rod; 22. Telescopic assembly; 221. Telescopic sleeve; 222. Fixed screw; 23. Base assembly; 231. Slider; 232. Base shell; 24. Mounting assembly; 241. Mounting shell; 242. Movable rod; 3. Fork assembly; 31. Threaded block; 32. Center shell; 33. Rotating screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Embodiment 1

[0024] See also Figure 1-4 As shown, the utility model provides a technical solution: a projection device for computer teaching, comprising a projection screen 1 and a support mechanism 2, wherein the support mechanism 2 is arranged below the projection screen 1;

[0025] The supporting mechanism 2 includes a movable component 21, a telescopic component 22, a base component 23 and a mounting component 24. The movable component 21 is arranged outside the projection screen 1, the telescopic component 22 is arranged outside the movable component 21, the base component 23 is arranged below the telescopic component 22, and the mounting component 24 is arranged below the base component 23.

[0026] Furthermore, the movable component 21 includes a rotating plate 211 and a telescopic rod 212. Four rotating plates 211 are rotatably installed at the bottom of the projection screen 1. The telescopic rod 212 is rotatably installed on the outer side of the rotating plate 211. The telescopic rod 212 rotates forward and backward or left and right through the rotating plate 211.

[0027] Furthermore, the telescopic assembly 22 includes a telescopic sleeve 221 and a fixed screw 222. The telescopic sleeve 221 is slidably installed on the outer surface of the telescopic rod 212. The outer thread of the telescopic sleeve 221 is installed with a fixed screw 222 with one end passing through and extending into the interior thereof. The telescopic sleeve 221 is telescoped and extended through the telescopic rod 212 to adjust the height of the projection screen 1. The fixed screw 222 is rotated by hand so that the fixed screw 222 fixes the telescopic rod 212.

[0028] Furthermore, the base assembly 23 includes a slider 231 and a base shell 232. The slider 231 is rotatably installed on the other end of the telescopic rod 212, and the base shell 232 is slidably installed on the outer surface of the slider 231. The two sliders 231 are moved to opposite sides through the base shell 232 by hand, so that the telescopic sleeve 221 rotates through the telescopic rod 212.

[0029] Furthermore, the mounting assembly 24 includes a mounting shell 241 and a movable rod 242. The mounting shell 241 is fixedly mounted on the bottom of the base shell 232. Four movable rods 242 are rotatably mounted inside the mounting shell 241. The two movable rods 242 drive the mounting shell 241 and the base shell 232 to fork apart, so that the base of the projection device is unfolded and stably placed.

[0030] Embodiment 2

[0031] See also Figure 1-4 As shown, in contrast to Example 1, as another embodiment of the present invention, a forked assembly 3 is disposed on the outer side of the movable rod 242 , and the forked assembly 3 includes a threaded block 31 , a center shell 32 and a rotating screw 33 .

[0032] Furthermore, a threaded block 31 is rotatably installed at one end of the movable rod 242, and a center shell 32 is slidably installed on the outer surface of the threaded block 31. A rotating screw 33 with one end penetrating and extending to the outside of the center shell 32 is rotatably installed on the inner wall of the center shell 32. The outer surface of the rotating screw 33 is connected to the internal thread of the threaded block 31. The rotating screw 33 causes the two threaded blocks 31 to move to opposite sides through the center shell 32, and the two threaded blocks 31 respectively drive the two movable rods 242 to fork apart.

[0033] Working principle: First, a projection device for computer teaching is moved to a working position. When in use, the first step is to manually move the two sliders 231 to opposite sides through the base shell 232, so that the telescopic sleeve 221 rotates through the telescopic rod 212, so that the projection device is unfolded. The second step is to manually rotate the rotating screw 33, so that the two threaded blocks 31 move to opposite sides through the central shell 32, and the two threaded blocks 31 respectively drive the two movable rods 242 to fork apart. The third step is that the two movable rods 242 drive the mounting shell 241 and the base shell 232 to fork apart, so that the base of the projection device is unfolded and stably placed. The fourth step is that the telescopic sleeve 221 is retracted and extended through the telescopic rod 212 to adjust the height of the projection screen 1, and the fixed screw 222 is manually rotated so that the fixed screw 222 fixes the telescopic rod 212, and the projection screen 1 is unfolded, which is convenient for computer teaching through the projector. In this way, the use process of a projection device for computer teaching is completed.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection device for computer teaching, comprising a projection screen (1) and a supporting mechanism (2), characterized in that: A supporting mechanism (2) is provided below the projection screen (1); The support mechanism (2) comprises a movable component (21), a telescopic component (22), a base component (23) and a mounting component (24); the movable component (21) is arranged outside the projection screen (1); the telescopic component (22) is arranged outside the movable component (21); the base component (23) is arranged below the telescopic component (22); and the mounting component (24) is arranged below the base component (23).

2. A projection device for computer teaching according to claim 1, characterized in that: The movable component (21) comprises a rotating plate (211) and a telescopic rod (212); four rotating plates (211) are rotatably mounted on the bottom of the projection screen (1); and the telescopic rod (212) is rotatably mounted on the outer side of the rotating plate (211).

3. A projection device for computer teaching according to claim 2, characterized in that: The telescopic assembly (22) comprises a telescopic sleeve (221) and a fixed screw (222); the telescopic sleeve (221) is slidably mounted on the outer surface of the telescopic rod (212); the outer surface of the telescopic sleeve (221) is threadedly mounted with a fixed screw (222) having one end penetrating and extending into the interior thereof.

4. A projection device for computer teaching according to claim 3, characterized in that: The base assembly (23) comprises a slider (231) and a base shell (232); the other end of the telescopic rod (212) is rotatably mounted with the slider (231); and the outer surface of the slider (231) is slidably mounted with the base shell (232).

5. A projection device for computer teaching according to claim 4, characterized in that: The mounting assembly (24) comprises a mounting shell (241) and movable rods (242); the mounting shell (241) is fixedly mounted on the bottom of the base shell (232); and four movable rods (242) are rotatably mounted inside the mounting shell (241).

6. A projection device for computer teaching according to claim 5, characterized in that: A forked assembly (3) is arranged on the outer side of the movable rod (242), and the forked assembly (3) comprises a threaded block (31), a central shell (32) and a rotating screw (33).

7. A projection device for computer teaching according to claim 6, characterized in that: A threaded block (31) is rotatably mounted on one end of the movable rod (242), a center shell (32) is slidably mounted on the outer surface of the threaded block (31), a rotating screw rod (33) having one end penetrating through and extending to the outside of the center shell (32) is rotatably mounted on the inner wall of the center shell (32), and the outer surface of the rotating screw rod (33) is connected to the internal thread of the threaded block (31).

Images