Display board facilitating replacement of display content

Abstract

The utility model relates to a display board convenient to replace display content in the technical field of teaching appliances, which comprises a base, the top of the base is fixedly connected with a shell, a display mechanism is arranged above the shell, and an extension component is arranged at the top of the display mechanism; the display mechanism comprises a hollow cross-shaped frame, the hollow cross-shaped frame is arranged above the shell, an extension rod is slidably connected to the inner side of the hollow cross-shaped frame, a U-shaped block is fixedly connected to the end, away from the hollow cross-shaped frame, of the extension rod, and a display plate body is arranged on the inner side of the U-shaped block. Through the arrangement of the hollow cross-shaped frame, the U-shaped block and the driving rotating assembly, different Chinese teaching contents can be displayed on the four groups of display board bodies during use, the displayed contents are diversified, and the four display board bodies can rotate under the action of the driving rotating assembly, so that the display board bodies are more convenient to use. And a teacher can display required teaching contents according to requirements, so that teaching is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching tools, in particular to a display board which is convenient for changing display contents. Background Art

[0002] Language is a polysemous word, usually used as an abbreviation for language and writing, language and literature, and language and culture. Its original meaning is "language and writing". Language is generally considered a comprehensive subject of language and culture. It is a concise general term for language and articles, language knowledge and cultural knowledge. When teaching Chinese, it is often necessary to display Chinese teaching knowledge, and a display board is needed for the display.

[0003] The patent with the authorization announcement number: CN213958343U discloses a display board for Chinese teaching that is convenient for changing display content. The application states: "Some existing display boards for Chinese teaching are not flexible enough, and the display boards cannot be clamped and fixed. At the same time, the clamping components cannot be adjusted according to the thickness of the display boards. When the display content needs to be changed, the replacement process is very inconvenient. More importantly, the Chinese teaching content cannot be displayed in an all-round manner, which reduces the quality of Chinese teaching." Although the application solves this problem, it has the following defects:

[0004] Although the display board for Chinese teaching in this application can replace the display content, not only is the content that can be replaced limited, but the display area is also limited, which cannot meet the needs of Chinese teaching. In addition, the entire display device occupies a large space, and the lecture venue for Chinese teaching is limited, resulting in inconvenience in use. For this reason, we propose a display board that is convenient for replacing the display content. Utility Model Content

[0005] In view of the above problems, the utility model provides a display board with convenient replacement of display content. When in use, different Chinese teaching contents can be displayed on four groups of display boards. The content that can be displayed is diverse, and the four display boards can be rotated under the action of a driving rotating component. Teachers can display the required teaching content according to needs, thereby facilitating teaching.

[0006] The technical solution of the utility model is: a display board for conveniently changing display contents, comprising a base, a shell is fixedly connected to the top of the base, a display mechanism is arranged above the shell, and an extension component is arranged on the top of the display mechanism;

[0007] The display mechanism comprises a hollow cross frame, the hollow cross frame is arranged above the shell, an extension rod is slidably connected to the inner side of the hollow cross frame, an end of the extension rod away from the hollow cross frame is fixedly connected to a U-shaped block, a display plate is arranged inside the U-shaped block, and a driving rotation assembly is arranged inside the shell;

[0008] The extension assembly includes an extension plate, which is hinged to the top of the display board body through a hinge, a limit ring is fixedly connected to the outer side of the extension plate, a fixed block is fixedly connected to the rear side of the display board body, and a rectangular rod is arranged above the fixed block.

[0009] In a further technical solution, a rectangular block is fixedly connected to the outer side of the display board, a rectangular groove is opened on the top of the U-shaped block, the outer side of the rectangular block is adapted to the inner side of the rectangular groove, and a side block is fixedly connected to the bottom of the display board.

[0010] In a further technical solution, a screw hole is provided on the top of the hollow cross frame, a limit bolt is threadedly connected to the inner side of the screw hole, and a limit hole is provided on the top of the extension rod which is distributed in a straight line with equal intervals.

[0011] In a further technical solution, the top of the driving rotating assembly passes through the top of the shell and is movably connected to the top of the shell through a bearing, and the driving rotating assembly is fixedly connected to the bottom of the hollow cross frame.

[0012] In a further technical solution, a support ring is fixedly connected to the bottom of the hollow cross frame, an annular groove is opened on the top of the shell, and the support ring is slidably connected to the inner side of the annular groove.

[0013] In a further technical solution, a spring is fixedly connected to the top of the fixed block, a movable block is fixedly connected to the top of the spring, and the movable block is fixedly connected to the bottom of the rectangular rod.

[0014] In a further technical solution, a vertical rod is fixedly connected to the bottom of the movable block, and the bottom end of the vertical rod passes through the fixed block and is slidably connected to the fixed block.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model is provided with a hollow cross frame, a U-shaped block and a driving rotating assembly. When in use, different Chinese teaching contents can be displayed on four groups of display boards. The contents that can be displayed are diverse, and the four display boards can be rotated under the action of the driving rotating assembly. The teacher can display the required teaching contents according to the needs, which is convenient for teaching.

[0017] 2. The utility model provides U-shaped blocks, rectangular blocks, rectangular grooves and side blocks, so that the display board can be easily installed and disassembled during use, and new display contents can be replaced. The installation and disassembly are convenient and quick, and the utility model has good practicality.

[0018] 3. The utility model provides a hollow cross frame, an extension rod and a limit bolt, so that the extension length of the display board can be adjusted during use to meet different usage environments, and after use, the extension rod can be stored in the hollow cross frame, which reduces space occupation and is convenient for use during teaching.

[0019] 4. The utility model can adjust the display area of ​​the display board according to the amount of display content when in use by setting the extension board, rectangular rod and limit ring. In addition, different contents can be displayed on the display board and the extension board to meet different teaching display needs, further improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of a hollow cross frame of an embodiment of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the extension plate of an embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the rear side of a display board of an embodiment of the utility model;

[0024] Figure 5 It is a schematic diagram of a partial explosion structure of a hollow cross frame of an embodiment of the utility model;

[0025] Figure 6 It is a schematic diagram of the cross-sectional structure of the inner part of the shell of an embodiment of the utility model.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Shell; 3. Display mechanism; 301. U-shaped block; 302. Hollow cross frame; 303. Support ring; 304. Limit bolt; 305. Rectangular groove; 306. Limit hole; 307. Extension rod; 308. Side block; 309. Rectangular block; 310. Display board; 311. Drive rotation assembly; 312. Annular groove; 4. Extension assembly; 401. Extension board; 402. Limit ring; 403. Rectangular rod; 404. Movable block; 405. Spring; 406. Fixed block; 407. Vertical rod. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0029] Example:

[0030] like Figure 1-Figure 6As shown, a display board for convenient replacement of display contents comprises a base 1, a shell 2 is fixedly connected to the top of the base 1, a display mechanism 3 is arranged above the shell 2, and an extension component 4 is arranged on the top of the display mechanism 3.

[0031] The display mechanism 3 includes a hollow cross frame 302, which is arranged above the shell 2. An extension rod 307 is slidably connected to the inner side of the hollow cross frame 302. One end of the extension rod 307 away from the hollow cross frame 302 is fixedly connected to a U-shaped block 301. A display board 310 is arranged on the inner side of the U-shaped block 301, and a driving rotation component 311 is arranged on the inner side of the shell 2.

[0032] The extension assembly 4 includes an extension plate 401, which is hinged to the top of the display board 310 through a hinge. A limit ring 402 is fixedly connected to the outer side of the extension plate 401, and a fixed block 406 is fixedly connected to the rear side of the display board 310. A rectangular rod 403 is arranged above the fixed block 406.

[0033] The working principle of the above technical solution is as follows:

[0034] Teaching information can be displayed on the front side of the extension plate 401. When the teaching display information needs to be changed, the rotating assembly 311 is driven to rotate the hollow cross frame 302 to adjust and change the display information. The limit of the extension rod 307 is canceled by rotating the limit bolt 304, and the distance of the display content can be adjusted at this time;

[0035] When the display area of ​​the extension plate 401 is insufficient, or the content needs to be changed, the extension plate 401 can be flipped over to pull the vertical rod 407 downward, so that the rectangular rod 403 enters the limiting ring 402 to limit the extension plate 401. At this time, the same content can be displayed on the front side of the display board body 310 and the back side of the extension plate 401, or different content can be displayed, which not only changes the teaching content but also adjusts the display area.

[0036] In another embodiment, if Figure 2-3 As shown, a rectangular block 309 is fixedly connected to the outer side of the display board, a rectangular groove 305 is opened on the top of the U-shaped block 301, the outer side of the rectangular block 309 is adapted to the inner side of the rectangular groove 305, and a side block 308 is fixedly connected to the bottom of the display board body 310.

[0037] The rectangular block 309 and the rectangular groove 305 can limit the position of the display board 310 so that it remains in the U-shaped block 301. The side block 308 can cooperate with the rectangular block 309 and the rectangular groove 305 to further improve the stability of the display board 310.

[0038] In another embodiment, if Figure 2 As shown, a screw hole is provided at the top of the hollow cross frame 302, and a limit bolt 304 is threadedly connected inside the screw hole. Limit holes 306 are provided at the top of the extension rod 307 and are distributed in a straight line with equal intervals.

[0039] The screw hole facilitates the rotation of the limiting bolt 304, thereby limiting the extension rod 307. The limiting holes 306 distributed in a straight line facilitate the adjustment of the position of the extension rod 307 to limit it.

[0040] In another embodiment, if Figure 5 As shown, the top of the driving rotating assembly 311 passes through the top of the shell 2 and is movably connected to the top of the shell 2 through a bearing, and the driving rotating assembly 311 is fixedly connected to the bottom of the hollow cross frame 302 .

[0041] The driving rotating assembly 311 is composed of a servo motor, a rotating rod and a rotating seat, thereby driving the hollow cross frame 302 to rotate, thereby changing the display content.

[0042] In another embodiment, if Figure 5 As shown, a support ring 303 is fixedly connected to the bottom of the hollow cross frame 302 , an annular groove 312 is opened on the top of the shell 2 , and the support ring 303 is slidably connected to the inner side of the annular groove 312 .

[0043] The hollow cross frame 302 is supported by the support ring 303 and the annular groove 312 to ensure its stability during display and rotation.

[0044] In another embodiment, if Figure 4 As shown, a spring 405 is fixedly connected to the top of the fixed block 406 , a movable block 404 is fixedly connected to the top of the spring 405 , and the movable block 404 is fixedly connected to the bottom of the rectangular rod 403 .

[0045] Under the action of the spring 405 , the rectangular rod 403 can easily enter the limiting ring 402 , thereby limiting the position of the extension plate 401 , and the rectangular rod 403 can be fixed under the action of the movable block 404 .

[0046] In another embodiment, if Figure 4 As shown, a vertical rod 407 is fixedly connected to the bottom of the movable block 404 , and the bottom end of the vertical rod 407 passes through the fixed block 406 and is slidably connected to the fixed block 406 .

[0047] Under the action of the vertical rod 407 , the moving track of the movable block 404 is limited to ensure that it can only move in the up and down directions, thereby ensuring the stability of the extension plate 401 when being limited.

[0048] The above embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A display board for conveniently changing display contents, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a shell (2), a display mechanism (3) is arranged above the shell (2), and an extension component (4) is arranged on the top of the display mechanism (3); The display mechanism (3) comprises a hollow cross-shaped frame (302), the hollow cross-shaped frame (302) is arranged above the shell (2), an extension rod (307) is slidably connected to the inner side of the hollow cross-shaped frame (302), an end of the extension rod (307) away from the hollow cross-shaped frame (302) is fixedly connected to a U-shaped block (301), a display plate (310) is arranged on the inner side of the U-shaped block (301), and a driving rotation assembly (311) is arranged on the inner side of the shell (2); The extension assembly (4) comprises an extension plate (401), the extension plate (401) being hinged to the top of the display board body (310) via a hinge, a limit ring (402) being fixedly connected to the outer side of the extension plate (401), a fixed block (406) being fixedly connected to the rear side of the display board body (310), and a rectangular rod (403) being arranged above the fixed block (406).

2. A display board for conveniently changing display contents according to claim 1, characterized in that: A rectangular block (309) is fixedly connected to the outer side of the display board, a rectangular groove (305) is provided on the top of the U-shaped block (301), the outer side of the rectangular block (309) is adapted to the inner side of the rectangular groove (305), and a side block (308) is fixedly connected to the bottom of the display board body (310).

3. A display board for conveniently changing display contents according to claim 1, characterized in that: The top of the hollow cross frame (302) is provided with a screw hole, the inner side of the screw hole is threadedly connected with a limit bolt (304), and the top of the extension rod (307) is provided with limit holes (306) distributed in a straight line with equal intervals.

4. A display board for conveniently changing display contents according to claim 1, characterized in that: The top end of the driving rotating assembly (311) passes through the top of the shell (2) and is movably connected to the top of the shell (2) via a bearing. The driving rotating assembly (311) is fixedly connected to the bottom of the hollow cross frame (302).

5. A display board for conveniently changing display contents according to claim 1, characterized in that: A support ring (303) is fixedly connected to the bottom of the hollow cross frame (302), an annular groove (312) is provided on the top of the shell (2), and the support ring (303) is slidably connected to the inner side of the annular groove (312).

6. A display board for conveniently changing display contents according to claim 1, characterized in that: The top of the fixed block (406) is fixedly connected to a spring (405), the top of the spring (405) is fixedly connected to a movable block (404), and the movable block (404) is fixedly connected to the bottom of the rectangular rod (403).

7. A display board for conveniently changing display contents according to claim 6, characterized in that: The bottom of the movable block (404) is fixedly connected with a vertical rod (407), and the bottom end of the vertical rod (407) passes through the fixed block (406) and is slidably connected to the fixed block (406).

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