Device for projection of educational equipment

Abstract

The utility model relates to the technical field of wireless educational equipment, and discloses a device for educational equipment projection, comprising a whiteboard body, an outer frame, a support frame, and universal wheels, wherein the outer frame is fixedly connected to the outer surface of the whiteboard body, the support frame is fixedly connected to the outer surface of the outer frame, the universal wheels are rectangularly distributed and fixedly connected to the bottom surface of the support frame, the top surface of the outer frame is fixedly connected to a shading box, the outer surface of the shading box is detachably connected to a sealing cover, the inner wall of the shading box is rotatably connected to a rotating shaft through a bearing, the outer surface of the rotating shaft is fixedly connected to a frosted film roll, and by arranging the frosted film roll that is rolled up on the inner wall of the shading box, the whiteboard body can be treated with a reflective surface before use, so that the whiteboard body has the effect of reducing surface reflection when it is put into use, making text and images clearer, and at the same time increasing the durability and scratch resistance of the whiteboard body.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless educational equipment, in particular to a device for projecting educational equipment. Background Art

[0002] With the rapid development of information technology and the continuous updating of educational concepts, educational equipment is also undergoing profound changes. These educational devices can further facilitate students' understanding and learning. At present, wireless interactive whiteboards are often used in educational equipment projection devices, playing an important role in innovating teaching models and improving teaching quality.

[0003] The existing wireless interactive whiteboards are prone to some problems during use. Since the device is often set up in the classroom, the indoor light can easily cause reflections on the whiteboard surface, resulting in learners being unable to quickly learn and remember the content on the wireless interactive whiteboard surface.

[0004] For example: Chinese utility model patent application number: CN214984439U discloses "a teaching whiteboard with an anti-reflective structure, comprising a stand, a whiteboard body and an adjustment assembly, the whiteboard body is rotatably installed in the stand through the adjustment assembly, the adjustment assembly comprises a mounting shaft group, a circular plate, a fixed round rod and a screw ring, the mounting shaft group is vertically installed between the stand and the whiteboard body, the circular plate is vertically sleeved on the mounting shaft group, an arc-shaped sliding hole is provided on the surface of the circular plate, one end of the fixed round rod is fixed to the front surface of the whiteboard body, the other end of the fixed round rod passes through the arc-shaped sliding hole and is exposed to the outside, the screw ring is screwed and sleeved on the end of the fixed round rod and contacts with the side of the circular plate for limiting position." The above patent can prove the defects of the prior art.

[0005] Therefore, a device for projecting educational equipment is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a projection device for educational equipment to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for projection of educational equipment, comprising a whiteboard body, an outer frame, a support frame, and universal wheels, wherein the outer frame is fixedly connected to the outer surface of the whiteboard body, the support frame is fixedly connected to the outer surface of the outer frame, the universal wheels are fixedly connected to the bottom surface of the support frame in a rectangular distribution, the top surface of the outer frame is fixedly connected to a shading box, the outer surface of the shading box is detachably connected to a sealing cover, the inner wall of the shading box is rotatably connected to a rotating shaft through a bearing, the outer surface of the rotating shaft is fixedly connected to a frosted film roll, the outer surface of the bottom end of the sealing cover is provided with a discharge port, and the end of the frosted film roll away from the rotating shaft passes through the discharge port and extends to the outside of the sealing cover.

[0008] Preferably, a support rod is provided on the outer surface of the outer frame, fixed blocks are fixedly connected at both ends of the support rod, a blade is fixedly connected to the bottom surface of the fixed block located at the top end of the support rod, a slider is fixedly connected to the side wall of the fixed block, and two upper and lower opposite sliding grooves are provided on the outer surface of the outer frame, and the slider is slidably connected to the sliding groove.

[0009] Preferably, a push block is fixedly connected to the middle portion of the outer surface of the support rod, and a socket is provided on the surface of the push block.

[0010] Preferably, both ends of the inner wall of the light-shielding box are provided with limit plates fixed on the surface of the rotating shaft, and between the opposite surfaces of the two limit plates there are clamps slidably connected to the rotating shaft, and a damping spring is fixedly connected between the clamps and the limit plates, and both ends of the frosted film roll are tightly fitted with the clamps.

[0011] Preferably, the end of the blade away from the support rod is a curved surface.

[0012] Preferably, the cross-sections of the slider and the slide groove are both T-shaped.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] By providing a frosted film roll that is rolled up on the inner wall of the shading box, the whiteboard body can be treated with a reflective surface before use, so that the whiteboard body can reduce surface reflection when it is put into use, making the text and images clearer. At the same time, it can also increase the durability and scratch resistance of the whiteboard body, thereby improving the convenience of the existing wireless educational equipment during use and avoiding the impact on learning efficiency due to unclear font presentation during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of a partial cross-sectional structure of the light shielding box of the utility model;

[0017] Figure 3 This is a schematic diagram of the sealing cover structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the partial cross-section of the outer frame and the support rod assembly structure of the utility model;

[0019] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A in the middle;

[0020] Figure 6 This is a schematic diagram of the support rod and push block structure of the utility model;

[0021] Figure 7 For this utility model Figure 6 Enlarged structural diagram at B in the middle.

[0022] In the figure:

[0023] 1. Whiteboard body; 2. Outer frame; 3. Support frame; 4. Universal wheel; 5. Shading box; 6. Sealing cover; 7. Rotating shaft; 8. Frosted film roll; 9. Discharge port; 10. Support rod; 11. Fixed block; 12. Slider; 13. Slide groove; 14. Blade; 15. Limit plate; 16. Clamp; 17. Damping spring; 18. Push block; 19. Socket. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figures 1 to 7, is an embodiment provided by the utility model: a device for projection of educational equipment, comprising a whiteboard body 1, an outer frame 2, a support frame 3, and universal wheels 4, the outer frame 2 is fixedly connected to the outer surface of the whiteboard body 1, the support frame 3 is fixedly connected to the outer surface of the outer frame 2, the universal wheels 4 are rectangularly distributed and fixedly connected to the bottom surface of the support frame 3, the top surface of the outer frame 2 is fixedly connected with a shading box 5, the outer surface of the shading box 5 is detachably connected with a sealing cover 6, the inner wall of the shading box 5 is rotatably connected with a rotating shaft 7 through a bearing, the outer surface of the rotating shaft 7 is fixedly connected with a frosted film roll 8, a discharge port 9 is provided on the outer surface of the bottom end of the sealing cover 6, the end of the frosted film roll 8 away from the rotating shaft 7 passes through the discharge port 9 and extends to the outside of the sealing cover 6, a support rod 10 is provided on the outer surface of the outer frame 2, both ends of the support rod 10 are fixedly connected with a fixing block 11, a blade 14 is fixedly connected to the bottom surface of the fixing block 11 located at the top of the support rod 10, the end of the blade 14 away from the support rod 10 is an arc surface, and the side of the fixing block 11 The wall is fixedly connected with a slider 12, and the outer surface of the outer frame 2 is provided with two upper and lower opposite slide grooves 13. The cross sections of the slider 12 and the slide groove 13 are both T-shaped. By setting the cross sections of the slider 12 and the slide groove 13 to be T-shaped, the support rod 10 and the hanging can be stable. The slider 12 is slidably connected with the slide groove 13. A push block 18 is fixedly connected to the middle of the outer surface of the support rod 10. The surface of the push block 18 is provided with a socket 19. Both ends of the inner wall of the light shielding box 5 are provided with a fixed on the surface of the rotating shaft 7. The limiting plates 15 are provided, and a clamping plate 16 slidably connected to the rotating shaft 7 is provided between the opposite surfaces of the two limiting plates 15. A damping spring 17 is fixedly connected between the clamping plate 16 and the limiting plates 15. Both ends of the frosted film roll 8 are tightly fitted with the clamping plates 16. By arranging the limiting plates 15, the clamping plates 16, and the damping springs 17, the frosted film roll 8 can be unwound smoothly. At the same time, the damping springs 17 act on the clamping plates 16 to have a clamping effect, which can adapt to frosted film rolls 8 of different widths.

[0026] This structure optimizes the wireless whiteboard body 1 in the existing wireless educational equipment. By pre-processing the reflection of the wireless whiteboard, the interaction of the wireless educational equipment can be smoother, and the problem of unclear font presentation caused by reflection can be reduced, as well as the situation where scholars are disturbed and delayed in learning due to this problem.

[0027] The working principle implemented above is as follows: when using the projection device for educational equipment, the end of the frosted film roll 8 extending out of the sealing cover 6 is pulled downward until the frosted film roll 8 is unfolded and flush with the bottom end of the outer frame 2, and the push block 18 is held to move the support rod 10 from left to right. During the process, the slider 12 slides on the inner wall of the slide groove 13. At the same time, during the initial movement, the blade 14 can cut the top of the unfolded frosted film roll 8. During cutting, the side edge of the frosted film roll 8 first contacts the arc surface of the blade 14, and then with the movement of the support rod 10, the blade 14 can cut the frosted film roll 8. When cutting is completed, the release paper on the surface of the frosted film roll 8 is torn off, and the frosted film roll 8 is attached to the surface of the whiteboard body 1. In addition, when the whiteboard body 1 is put into the state of panel use, the eraser can be inserted into the socket 19 on the surface of the push block 18 for storage, thereby improving the practicality of the whiteboard body 1 during use.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] Although 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 educational equipment, comprising a whiteboard body (1), an outer frame (2), a support frame (3), and universal wheels (4), wherein the outer frame (2) is fixedly connected to the outer surface of the whiteboard body (1), the support frame (3) is fixedly connected to the outer surface of the outer frame (2), and the universal wheels (4) are arranged in a rectangular shape and fixedly connected to the bottom surface of the support frame (3), characterized in that: A shading box (5) is fixedly connected to the top surface of the outer frame (2), a sealing cover (6) is detachably connected to the outer surface of the shading box (5), an inner wall of the shading box (5) is rotatably connected to a rotating shaft (7) via a bearing, a frosted film roll (8) is fixedly connected to the outer surface of the rotating shaft (7), a discharge port (9) is provided on the outer surface of the bottom end of the sealing cover (6), and an end of the frosted film roll (8) away from the rotating shaft (7) passes through the discharge port (9) and extends to the outside of the sealing cover (6).

2. The educational equipment projection device according to claim 1, characterized in that: The outer surface of the outer frame (2) is provided with a support rod (10), both ends of the support rod (10) are fixedly connected to fixed blocks (11), a blade (14) is fixedly connected to the bottom surface of the fixed block (11) located at the top of the support rod (10), a sliding block (12) is fixedly connected to the side wall of the fixed block (11), and the outer surface of the outer frame (2) is provided with two sliding grooves (13) opposite to each other in upper and lower directions, and the sliding block (12) is slidably connected to the sliding groove (13).

3. The educational equipment projection device according to claim 2, characterized in that: A push block (18) is fixedly connected to the middle of the outer surface of the support rod (10), and a socket (19) is provided on the surface of the push block (18).

4. The educational equipment projection device according to claim 1, characterized in that: Both ends of the inner wall of the light shielding box (5) are provided with limit plates (15) fixed to the surface of the rotating shaft (7); between the opposing surfaces of the two limit plates (15) there is a clamping plate (16) slidably connected to the rotating shaft (7); between the clamping plate (16) and the limit plates (15) there is a damping spring (17) fixedly connected; and both ends of the frosted film roll (8) are tightly fitted with the clamping plate (16).

5. The educational equipment projection device according to claim 2, characterized in that: One end of the blade (14) away from the support rod (10) is a curved surface.

6. The educational equipment projection device according to claim 2, characterized in that: The sliding block (12) and the sliding groove (13) both have T-shaped cross-sections.

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