CN211403749U - Demonstration board for education - Google Patents

Abstract

The utility model discloses a demonstration board for education, which comprises a base, a bottom plate is welded on the bottom of the base, and a top of the bottom plate is rotatably connected with a number of two symmetrical center points with the center point of the bottom plate as the center of symmetry. Connecting rod, the end of the connecting rod away from the bottom plate is welded with a sleeve rod, and the inner side wall of the sleeve rod is provided with a square limit slot; after the demo board is moved to the designated position, the telescopic shaft extension of the telescopic rod can be controlled by a switch When the telescopic shaft drives the rotating plate to reach the ground, the telescopic shaft, the sleeve rod, the screw rod, the base and the blackboard form a triangle, which supports and fixes the blackboard. The instructor can write with one hand at ease, which is very convenient and increases the teaching efficiency. At the same time, the swivel can be manually rotated to adjust the length of the screw rod, and then the floor area of the demo board can be adjusted, and the occupied area can be changed according to the actual situation.

Description

An educational demonstration board

technical field

The utility model relates to the technical field of education, in particular to a demonstration board for education.

Background technique

Pedagogy is a social science that studies human educational activities and their laws. It exists widely in human life. The general laws of education are revealed through the study of educational phenomena and educational problems. After the middle of the 19th century, the emergence of Marxism laid the foundation of dialectical materialism philosophy and natural science for the scientificization of pedagogy. The rapid development of modern production and science and technology, and the breadth and richness of educational practice have further promoted the development of pedagogy. The independence of any discipline first depends on its specific research object, or a research object different from other disciplines. The research objects of pedagogy are the phenomena and problems of human education, as well as the general laws of education. When teachers educate students, they often need to use presentation boards to write to help students better understand the learning content.

At present, the structure of the general movable demo board is relatively simple, and the teacher needs to write on the blackboard of the demo board. When the writing force is large, the board-shaped demo board is easy to tilt and roll over, so that the teacher needs to use the blackboard when writing. Fixing the demo board with the other hand is very troublesome and reduces teaching efficiency. To this end, a demonstration board for education is proposed.

Utility model content

The purpose of the present invention is to provide a demonstration board for education, so as to solve the problems raised in the above background technology.

In order to achieve the above purpose, the utility model provides the following technical solutions: a demonstration board for education, comprising a base, the bottom of the base is welded with a bottom plate, and the top of the bottom plate is rotatably connected with two bottom plates. The center point of the connecting rod is a symmetric center-symmetric connecting rod, the end of the connecting rod away from the bottom plate is welded with a sleeve rod, the inner side wall of the sleeve rod is provided with a square limit groove, and the inside of the square limit groove is slidably connected with a square A limit plate, the top of the square limit plate is fixedly connected with a screw rod, the top of the screw rod extends to the outside of the sleeve rod through the inner ring of the sleeve rod, and the end of the sleeve rod away from the connecting rod is rotatably connected with a rotating rod. The inner side wall of the swivel ring is threadedly connected with the outer side wall of the lead screw through the internal thread, the top end of the lead screw is welded with a connecting block, and the side of the connecting block away from the lead screw is welded with a second bracket, the The outer side wall of the swivel ring is bonded with a non-slip sleeve.

As a further preference of this technical solution: a third bracket is welded on the side of the connecting block away from the base, the outer side wall of the third bracket is rotatably connected with a turning plate, and the side of the turning plate away from the connecting block is glued to the side of the connecting block. Attached anti-skid plate.

As a further preference of the technical solution: the bottom of the bottom plate is rotatably connected with four evenly distributed turntables, the bottom of the turntable is welded with a support frame, and one side of the support frame is rotatably connected with a roller.

As a further preference of this technical solution: a fixing plate is fixedly connected to the top of the base, a blackboard is fixedly connected to the top of the fixing plate, a shielding cover is installed on the top of the blackboard, and one side of the fixing plate is fixed A switch is connected, a U-shaped plate is welded on the top of the fixing plate, and one side of the U-shaped plate is fixedly connected with the blackboard.

As a further preference of this technical solution: a first bracket is welded on the side of the blackboard away from the U-shaped plate, one end of the first bracket is rotatably connected with a telescopic rod, and the output shaft of the telescopic rod is welded with a telescopic shaft, One end of the telescopic shaft away from the first bracket is rotatably connected with the second bracket.

As a further preference of the technical solution: the electrical output end of the switch is electrically connected to the electrical input end of the telescopic rod.

Compared with the prior art, the beneficial effect of the present invention is that after the demo board is moved to a designated position, the telescopic shaft of the telescopic rod can be controlled by a switch to extend, and the telescopic shaft forms a certain angle with the sleeve rod and the screw rod. , When the telescopic shaft drives the rotating plate to reach the ground, the telescopic shaft, sleeve rod, lead screw, base and blackboard form a triangle. The triangle supports and fixes the blackboard, so that teachers can write with one hand at ease, which is very convenient and increases teaching. At the same time, the swivel ring can be manually rotated to adjust the length of the lead screw, and then the floor area of the demo board can be adjusted, and the occupied area can be changed according to the actual situation.

Description of drawings

Fig. 1 is the side view structure schematic diagram of the utility model;

Fig. 2 is the side view of the utility model;

Fig. 3 is the enlarged schematic diagram of the structure of area A in Fig. 1 of the utility model;

FIG. 4 is an enlarged schematic view of the structure of the B area in FIG. 1 of the present utility model.

In the figure: 1, base; 2, bottom plate; 3, turntable; 4, support frame; 5, roller; 6, fixed plate; 7, switch; 8, U-shaped plate; 9, blackboard; 10, shield; 11 , first bracket; 12, telescopic rod; 13, telescopic shaft; 14, second bracket; 15, connecting block; 16, third bracket; 17, turning plate; 18, skid plate; 19, screw rod; 20, turning Ring; 21, non-slip sleeve; 22, sleeve rod; 23, square limit groove; 24, square limit plate; 25, connecting rod.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example

1-4, the present invention provides a technical solution: an educational demonstration board, comprising a base 1, the bottom of the base 1 is welded with a bottom plate 2, and the top of the bottom plate 2 is rotatably connected with a There are two connecting rods 25 that are symmetrical with the center point of the bottom plate 2 as the center of symmetry, the end of the connecting rod 25 away from the bottom plate 2 is welded with a sleeve rod 22, and the inner side wall of the sleeve rod 22 is provided with a square limit groove 23. A square limit plate 24 is slidably connected to the inside of the square limit groove 23, and a screw rod 19 is fixedly connected to the top of the square limit board 24, and the top of the screw rod 19 passes through the inner ring of the sleeve rod 22. Extending to the outside of the sleeve rod 22, one end of the sleeve rod 22 away from the connecting rod 25 is rotatably connected with a swivel 20, and the inner side wall of the swivel 20 is threadedly connected with the outer side wall of the lead screw 19 through an internal thread. A connecting block 15 is welded to the top of the rod 19 , a second bracket 14 is welded to the side of the connecting block 15 away from the screw rod 19 , and an anti-skid sleeve 21 is adhered to the outer side wall of the swivel ring 20 .

In this embodiment, specifically, a third bracket 16 is welded on the side of the connecting block 15 away from the base 1 , and a turning plate 17 is rotatably connected to the outer side wall of the third bracket 16 , and the turning plate 17 is far from the connecting plate 17 . One side of the block 15 is bonded with an anti-skid plate 18, the turning plate 17 is used for supporting on the ground, and the anti-skid plate 18 can increase the frictional force.

In this embodiment, specifically: the bottom of the bottom plate 2 is rotatably connected with four evenly distributed turntables 3, the bottom of the turntable 3 is welded with a support frame 4, and one side of the support frame 4 is rotatably connected There are rollers 5, and through the above arrangement, the rollers 5 are in contact with the ground, so that the instructor can push the demo board.

In this embodiment, specifically: a fixing plate 6 is fixedly connected to the top of the base 1 , a blackboard 9 is fixedly connected to the top of the fixing plate 6 , and a shielding cover 10 is installed on the top of the blackboard 9 . One side of the board 6 is fixedly connected with the switch 7, the top of the fixed board 6 is welded with a U-shaped board 8, one side of the U-shaped board 8 is fixedly connected with the blackboard 9, and the U-shaped board 8 and the blackboard 9 are formed. Chalk slot for easy access by instructors.

In this embodiment, specifically: a first bracket 11 is welded to the side of the blackboard 9 away from the U-shaped plate 8 , and a telescopic rod 12 is rotatably connected to one end of the first bracket 11 , and the output shaft of the telescopic rod 12 A telescopic shaft 13 is welded, one end of the telescopic shaft 13 away from the first bracket 11 is rotatably connected with the second bracket 14 , and the telescopic rod 12 can control the extension length of the telescopic shaft 13 .

In this embodiment, specifically: the electrical output end of the switch 7 is electrically connected to the electrical input end of the telescopic rod 12 , and the switch 7 controls the opening and closing of the telescopic rod 12 .

In this embodiment, the model of the telescopic rod 12 is a TGA-100 lifting rod.

Working principle or structural principle, when in use, push the demo board to the designated area, turn on the switch 7, the telescopic shaft 13 of the telescopic rod 12 extends, and the telescopic shaft 13, the push sleeve rod 22 and the screw rod 19 form a certain space between them. Included angle, when the telescopic shaft 13 drives the rotating plate 17 to reach the ground, a triangle is formed between the telescopic shaft 13, the sleeve rod 22, the screw rod 19, the base 1 and the blackboard 9, and the triangle supports and fixes the blackboard 9, so that the teacher can It is very convenient to write with one hand and increases the teaching efficiency. At the same time, the swivel 20 can be manually rotated to adjust the effective extension length of the screw rod 19, and then the telescopic shaft 13, the sleeve rod 22, the screw rod 19, and the base 1 can be adjusted. The size of the triangle is formed between it and the blackboard 9, and the footprint of the demo board is adjusted.

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

Claims (6)

1. A demonstration board for education, comprising a base (1), characterized in that: the welding of the bottom of base (1) has bottom plate (2), the top of bottom plate (2) is rotated and is connected with quantity for two connecting rod (25) that use the central point of bottom plate (2) as symmetry center symmetry, the welding of the one end that bottom plate (2) were kept away from in connecting rod (25) has loop bar (22), square spacing groove (23) have been seted up to the inside wall of loop bar (22), the inside sliding connection of square spacing groove (23) has square limiting plate (24), the top fixedly connected with lead screw (19) of square limiting plate (24), the inner circle that the top of lead screw (19) was passed through loop bar (22) extends to the outside of loop bar (22), the one end that connecting rod (25) was kept away from in loop bar (22) is rotated and is connected with swivel (20), the inside wall of swivel (20) passes through the lateral wall threaded connection of internal thread and lead screw (19), the welding of the top of lead screw (19) has link, one side of the connecting block (15) far away from the screw rod (19) is welded with a second support (14), and the outer side wall of the rotating ring (20) is bonded with an anti-skidding sleeve (21).

2. An educational demonstration board according to claim 1, wherein: one side of the connecting block (15) far away from the base (1) is welded with a third support (16), the outer side wall of the third support (16) is rotatably connected with a rotating plate (17), and one side of the rotating plate (17) far away from the connecting block (15) is bonded with an anti-slip plate (18).

3. An educational demonstration board according to claim 1, wherein: the bottom of bottom plate (2) is rotated and is connected with quantity be four evenly distributed's carousel (3), the bottom welding of carousel (3) has support frame (4), one side of support frame (4) is rotated and is connected with gyro wheel (5).

4. An educational demonstration board according to claim 1, wherein: the utility model discloses a blackboard, including base (1), top fixedly connected with fixed plate (6), the top fixedly connected with blackboard (9) of fixed plate (6), shielding cover (10) are installed at the top of blackboard (9), one side fixedly connected with switch (7) of fixed plate (6), the top welding of fixed plate (6) has U template (8), one side and blackboard (9) fixed connection of U template (8).

5. An educational demonstration board according to claim 4, wherein: one side welding that U template (8) were kept away from in blackboard (9) has first support (11), the one end of first support (11) is rotated and is connected with telescopic link (12), the output shaft welding of telescopic link (12) has telescopic shaft (13), the one end and the second support (14) rotation that first support (11) were kept away from in telescopic shaft (13) are connected.

6. An educational demonstration board according to claim 4, wherein: the electrical output end of the switch (7) is electrically connected with the electrical input end of the telescopic rod (12).

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