Multi-functional teaching blackboard

Abstract

This utility model discloses a multifunctional teaching blackboard, including a blackboard frame. A mounting groove is provided on the front of the blackboard frame, and a multimedia display screen is embedded in the center of the mounting groove. A first blackboard is embedded in the front of the mounting groove and on both sides of the multimedia display screen. Limiting grooves are provided on the upper and lower surfaces of the mounting groove. A sliding shielding frame is symmetrically arranged within the mounting groove. A second blackboard is embedded in the front of the sliding shielding frame. Limiting sliders are symmetrically fixed to the upper and lower surfaces of the sliding shielding frame, and the limiting sliders cooperate with the limiting grooves. A limiting connecting groove is provided below the sliding shielding frame, and limiting connecting blocks are symmetrically slidably installed within the limiting connecting groove. Rotating a bidirectional threaded rod can move the anti-slip plates, increasing the distance between the two anti-slip plates and causing them to press against the inner wall of the limiting groove. Friction is used to fix the position of the sliding shielding frame, preventing it from shaking when writing on the second blackboard.

Description

Technical Field

[0001] This utility model relates to a blackboard, and more particularly to a multifunctional teaching blackboard. Background Technology

[0002] A blackboard does not specifically refer to a black board surface. Traditionally, it is a flat surface that can be repeatedly written on with chalk. The board surface is hard and it is mostly used for teaching. With the development of technology and in order to realize multimedia teaching, the traditional blackboard has been gradually abandoned.

[0003] Existing multifunctional blackboards have built-in displays to assist in multimedia teaching and are equipped with two sets of sliding blackboards to cover the displays when not in use. However, in actual use, because the sliding blackboards are not fixed, the blackboards wobble from side to side when writing on them, causing writing difficulties. Utility Model Content

[0004] The purpose of this invention is to provide a multifunctional teaching blackboard to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional teaching blackboard, including a blackboard frame, a mounting groove on the front of the blackboard frame, a multimedia display screen embedded in the center of the mounting groove, a first blackboard embedded in the front of the mounting groove and on both sides of the multimedia display screen, limit grooves on the upper and lower surfaces of the mounting groove, symmetrical sliding shields arranged in the mounting groove, a second blackboard embedded in the front of the sliding shield, limit sliders symmetrically fixed to the upper and lower surfaces of the sliding shield, the limit sliders cooperating with the limit grooves, a limit connecting groove on the lower surface of the sliding shield, a limit connecting block symmetrically slidably installed in the limit connecting groove, and an anti-slip plate fixed to the lower surface of the limit connecting block.

[0006] Preferably, the blackboard frame has several slag discharge holes below it, the slag discharge holes are connected to the inside of the limiting slide groove, and the blackboard frame is fixedly connected to the limiting frame in front of and behind the slag discharge holes.

[0007] Preferably, a collection box is provided below the slag discharge hole, and a limit block is fixedly connected to the front and back of the collection box, the limit block cooperating with the limit frame.

[0008] Preferably, a roller is rotatably installed inside the limiting slider, and an inclined push plate is fixedly connected to the lower part of the sliding shield frame near the two side edges, with the lower part of the inclined push plate conforming to the bottom surface of the limiting slide groove.

[0009] Preferably, a bidirectional threaded rod is rotatably installed in the limiting connecting groove, and a threaded sleeve is embedded in the limiting connecting block, the threaded sleeve being threadedly engaged with the bidirectional threaded rod.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. By rotating the bidirectional threaded rod, the anti-slip plate can be moved, increasing the distance between the two anti-slip plates and pressing them against the inner wall of the limiting groove. The friction force is used to fix the position of the sliding shield frame, preventing it from shaking when writing on the second blackboard.

[0012] 2. The sliding shield frame moves synchronously with the inclined push plate. The movement of the inclined push plate pushes away chalk dust and other foreign objects inside the limiting slide groove. When passing through the slag discharge hole, these foreign objects fall into the collection box and are collected, thus preventing excessive accumulation of foreign objects inside the limiting slide groove from affecting the left and right sliding of the sliding shield frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a cross-sectional view of the present invention;

[0015] Figure 3 This is a schematic diagram of the blackboard frame structure of this utility model;

[0016] Figure 4 This is a partial exploded view of the present invention;

[0017] Figure 5 This is a schematic diagram of the collection box structure of this utility model.

[0018] In the diagram: 1. Blackboard frame; 101. Mounting slot; 102. Multimedia display screen; 103. First blackboard; 104. Limiting slide groove; 105. Slag discharge hole; 106. Limiting clip frame; 2. Collection box; 201. Limiting clip block; 3. Sliding shield frame; 301. Second blackboard; 302. Limiting slider; 303. Roller; 304. Inclined push plate; 4. Limiting connecting groove; 401. Two-way threaded rod; 402. Limiting connecting block; 403. Threaded sleeve block; 404. Anti-slip plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-5This utility model provides a technical solution: a multifunctional teaching blackboard, including a blackboard frame 1. The front of the blackboard frame 1 has an installation groove 101. A multimedia display screen 102 is embedded in the center of the installation groove 101. A first blackboard 103 is embedded in the front of the installation groove 101 and on both sides of the multimedia display screen 102. Limiting grooves 104 are provided on the upper and lower surfaces of the installation groove 101. A sliding cover frame 3 is symmetrically arranged in the installation groove 101. A second blackboard 301 is embedded in the front of the sliding cover frame 3. Limiting sliders 302 are symmetrically fixed to the upper and lower surfaces of the sliding cover frame 3. The limiting sliders 302 cooperate with the limiting grooves 104. A limiting connecting groove 4 is provided below the sliding cover frame 3. A limiting connecting block 402 is symmetrically slidably installed in the limiting connecting groove 4. An anti-slip plate 404 is fixed below the limiting connecting block 402.

[0021] In this embodiment, the sliding shielding frame 3 is slidably installed inside the mounting groove 101 by the cooperation of the limiting slider 302 and the limiting groove 104. When the two sliding shielding frames 3 are centered and attached together, the multimedia display screen 102 can be completely covered. Thus, when the multimedia display screen 102 is not in use, the first blackboard 103 and the second blackboard 301 can form a complete blackboard. The limiting connecting block 402 is slidably installed inside the limiting connecting groove 4, and the anti-slip plate 404 is slidably installed under the sliding shielding frame 3. The distance between the two anti-slip plates 404 is adjusted so that the two anti-slip plates 404 respectively abut against the inner wall of the limiting groove 104. Thus, the position of the sliding shielding frame 3 can be fixed by friction, so as to avoid the sliding shielding frame 3 shaking when writing on the second blackboard 301, which would affect the user's writing.

[0022] In order to achieve the purpose of discharging foreign objects from the limiting slide 104, the device adopts the following technical solution: several slag discharge holes 105 are opened under the blackboard frame 1, the slag discharge holes 105 are connected to the inside of the limiting slide 104, a limiting frame 106 is fixedly connected under the blackboard frame 1 and in front of and behind the slag discharge holes 105, a collection box 2 is set below the slag discharge holes 105, and a limiting block 201 is fixedly connected to the front and back of the collection box 2, and the limiting block 201 and the limiting frame 106 cooperate with each other.

[0023] The slag discharge hole 105 is connected to the inside of the limiting slide 104, so that foreign objects such as chalk dust and chalk stubs that fall into the limiting slide 104 can be discharged from the slag discharge hole 105. At the same time, the limiting block 201 and the limiting frame 106 cooperate with each other to lock the collection box 2 under the slag discharge hole 105. The foreign objects discharged through the slag discharge hole 105 will fall into the collection box 2 and be collected, so that they can be dumped into the trash can later, thus keeping the podium as clean and tidy as possible.

[0024] To achieve the purpose of adjusting the spacing of the anti-slip plate 404, the device adopts the following technical solution: a roller 303 is rotatably installed inside the limiting slider 302; an inclined push plate 304 is fixedly connected to the lower part of the sliding shield frame 3 near the two side edges; the lower part of the inclined push plate 304 is in contact with the bottom surface of the limiting slide groove 104; a bidirectional threaded rod 401 is rotatably installed inside the limiting connecting groove 4; a threaded sleeve 403 is embedded in the limiting connecting block 402; and the threaded sleeve 403 is threadedly engaged with the bidirectional threaded rod 401.

[0025] The inclined push plate 304 is attached to the bottom of the limiting slide groove 104. When the sliding shield frame 3 is moved, the inclined push plate 304 will move synchronously. The movement of the inclined push plate 304 will push away the chalk dust and other foreign objects inside the limiting slide groove 104. When passing through the slag discharge hole 105, they will fall into the collection box 2, which will prevent too many foreign objects from accumulating inside the limiting slide groove 104 and affecting the sliding of the limiting slider 302 in the limiting slide groove 104. The roller 303 enables the sliding shield frame 3 to roll and connect with the bottom of the limiting slide groove 104, making the sliding shield frame 3 slide more smoothly left and right. The bidirectional threaded rod 401 is threadedly engaged with the threaded sleeve block 403. Rotating the bidirectional threaded rod 401 can drive the two bidirectional threaded rods 401 to move closer or further apart, thereby adjusting the distance between the two anti-slip plates 404.

[0026] The working principle and usage process of this utility model are as follows: When the multimedia display screen 102 located in the center needs to be used, the bidirectional threaded rod 401 can be rotated to drive the anti-slip plate 404 to move closer together, releasing the restriction on the sliding cover frame 3. At this time, the two sliding cover frames 3 can slide to both sides to expose the multimedia display screen 102, thereby realizing multimedia teaching. When using the blackboard normally, the two sliding cover frames 3 need to be closed together to completely cover the multimedia display screen 102 in the center. At this time, the first blackboard 103 and the second blackboard 301 will form a complete blackboard. Then, the bidirectional threaded rod 401 is rotated by the knob. The rotation of the bidirectional threaded rod 401 will drive the anti-slip plate 404 to move, increasing the distance between the two anti-slip plates 404 and pressing against the inner wall of the limiting slide groove 104. The position of the sliding cover frame 3 is fixed by friction, preventing it from shaking when writing on the second blackboard 301.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multifunctional teaching blackboard, comprising a blackboard frame (1), characterized in that: The blackboard frame (1) has an installation groove (101) on the front. A multimedia display screen (102) is embedded in the center of the installation groove (101). A first blackboard (103) is embedded in the front of the installation groove (101) and on both sides of the multimedia display screen (102). A limiting slide groove (104) is opened on the upper and lower surfaces of the installation groove (101). A sliding cover frame (3) is symmetrically arranged in the installation groove (101). A second blackboard (301) is embedded in the front of the sliding cover frame (3). A limiting slider (302) is symmetrically fixed on the upper and lower surfaces of the sliding cover frame (3). The limiting slider (302) cooperates with the limiting slide groove (104). A limiting connection groove (4) is opened on the lower surface of the sliding cover frame (3). A limiting connection block (402) is symmetrically slidably installed in the limiting connection groove (4). An anti-slip plate (404) is fixed on the lower surface of the limiting connection block (402).

2. A multi-functional teaching blackboard as claimed in claim 1, wherein: The blackboard frame (1) has several slag discharge holes (105) below it. The slag discharge holes (105) are connected to the inside of the limiting slide groove (104). The blackboard frame (1) is fixedly connected to the limiting card frame (106) below and in front of and behind the slag discharge holes (105).

3. A multi-functional teaching blackboard as claimed in claim 2, wherein: A collection box (2) is provided below the slag discharge hole (105). A limiting block (201) is fixedly connected to the front and back of the collection box (2). The limiting block (201) cooperates with the limiting frame (106).

4. The multi-functional teaching blackboard according to claim 1, wherein: A roller (303) is rotatably installed inside the limiting slider (302), and an inclined push plate (304) is fixedly connected to the lower part of the sliding shield (3) near the two side edges. The lower part of the inclined push plate (304) is attached to the bottom surface of the limiting slide groove (104).

5. A multifunctional teaching blackboard according to claim 1, characterized in that: A bidirectional threaded rod (401) is rotatably installed in the limiting connecting groove (4), and a threaded sleeve (403) is embedded in the limiting connecting block (402). The threaded sleeve (403) is threadedly engaged with the bidirectional threaded rod (401).

Images