Display board

Abstract

The utility model discloses a display board, and relates to the technical field of display for French professional propaganda and education, the display board comprises a bottom plate, the bottom plate is in a rectangular plate shape, the upper surface of the bottom plate is vertically and fixedly connected with two racks, the outer surfaces of the two racks are both slidably connected with moving blocks, the upper surfaces of the two moving blocks are both provided with rectangular sliding holes, and the rectangular sliding holes are arranged in the rectangular sliding holes. And the two racks slide in the two sliding holes correspondingly, two limiting blocks are fixedly connected to the inner sides of the two sliding holes correspondingly, and limiting grooves are formed in the two sides of the two racks correspondingly. A rotating block is rotated to drive a worm, a worm gear, a connecting rod and a transmission gear to rotate, the transmission gear is meshed with a rack during rotation to drive moving blocks to move, when the two moving blocks are adjusted to the same height, a positioning rod is inserted into a through hole, and one end of the positioning rod is inserted into one end of each moving block in a threaded mode; and the display board main body can be freely lifted, so that people with different heights can use the display board main body.

Description

Technical Field

[0001] The utility model relates to the technical field of display for French professional education, in particular to a display board. Background Art

[0002] French is the language of the French nation.

[0003] However, the existing French professional missionary display board cannot be freely raised or lowered, and is not suitable for use by people of different heights; the existing display board is not easy to disassemble, and it is not easy to replace the display board when it is damaged. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a display board.

[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solutions:

[0006] A display board comprises a base plate, which is in the shape of a rectangular plate. Two racks are vertically fixedly connected to the upper surface of the base plate. The outer surfaces of the two racks are slidably connected to moving blocks. The upper surfaces of the two moving blocks are provided with rectangular sliding holes. The two racks slide inside the two sliding holes respectively. Two limit blocks are fixedly connected to the inner sides of the two sliding holes. Limiting grooves are provided on both sides of the two racks. The limit blocks slide inside the limit grooves. The limit blocks and the limit grooves are both trapezoidal. The insides of the two moving blocks are rotatably connected with driving mechanisms.

[0007] Preferably, the driving mechanism comprises a worm, and the two worms rotate inside the two moving blocks respectively, and one end of the two worms passes through one end of the two moving blocks respectively.

[0008] Preferably, the upper surfaces of the two worms are meshingly connected with worm wheels, the middle parts of the two worm wheels are fixedly connected with connecting rods, and the outer surfaces of the two connecting rods are fixedly connected with transmission gears.

[0009] Preferably, the two connecting rods rotate inside the two moving blocks respectively, the two transmission gears are respectively engaged with the outer surfaces of the two racks, and the worm wheel, transmission gear and worm are all arranged inside the moving block.

[0010] Preferably, one end of the two worm gears is fixedly connected to a rotating block respectively, four through holes are opened inside the two rotating blocks, a positioning rod is slidably inserted inside the through hole, and one end of the positioning rod is threadedly connected to one end of the moving block.

[0011] Preferably, the lower ends of the two racks are fixedly connected to reinforcement blocks, one end of the two reinforcement blocks is fixed to the upper surface of the base plate, the base plate, the racks and the reinforcement blocks form a triangle shape, the lower surface of the base plate is fixedly connected to four mounting blocks, and the upper surfaces of the two racks are fixedly connected to the top plate.

[0012] Preferably, the other ends of the two moving blocks are fixedly connected with rectangular plate-shaped placement plates, and the upper surfaces of the two placement plates are provided with display board bodies.

[0013] Preferably, two L-shaped control boards are fixedly connected to one side of the display board body, and control grooves are provided on the upper surfaces of the two moving blocks. The two control boards are slidably inserted into the two control grooves respectively.

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

[0015] 1. In the utility model, the rotating block is rotated to drive the worm to rotate, the worm wheel, the connecting rod and the transmission gear to rotate, and the transmission gear is engaged with the rack during rotation to drive the moving block to move. When the two moving blocks are adjusted to the same height, the positioning rod is inserted into the through hole, and one end of the positioning rod is threadedly inserted into one end of the moving block. The display board body can be freely raised and lowered, which is suitable for people of different heights to use the display board body;

[0016] 2. In the present invention, the display board body is slid from top to bottom, so that the two control boards slide inside the two control grooves respectively, and the display board body is placed on the upper surfaces of the two placement boards. When the display board body is damaged, it is convenient to replace the display board body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 It is a front structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the moving block and the limiting groove of the utility model;

[0020] Figure 3 This is a schematic diagram of the worm and positioning rod structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the connecting rod and transmission gear structure of the utility model;

[0022] The serial numbers in the figure are: 1. bottom plate; 2. rack; 3. moving block; 4. sliding hole; 5. limit block; 6. limit slot; 7. worm; 8. rotating block; 9. worm wheel; 10. connecting rod; 11. transmission gear; 12. positioning rod; 13. top plate; 14. reinforcement block; 15. installation block; 16. placement plate; 17. display board body; 18. control board; 19. control slot. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1: This embodiment provides a display board, see Figure 1-4 Specifically, it includes a bottom plate 1, which is in the shape of a rectangular plate. Two racks 2 are vertically fixedly connected to the upper surface of the bottom plate 1. The outer surfaces of the two racks 2 are slidably connected to moving blocks 3. Rectangular sliding holes 4 are provided on the upper surfaces of the two moving blocks 3. The two racks 2 slide inside the two sliding holes 4 respectively. Two limit blocks 5 are fixedly connected to the inner sides of the two sliding holes 4. Limiting grooves 6 are provided on both sides of the two racks 2. The limit blocks 5 slide inside the limit grooves 6. The limit blocks 5 and the limit grooves 6 are both trapezoidal. The insides of the two moving blocks 3 are rotatably connected with a driving mechanism, and the driving mechanism includes a worm 7. The two worms 7 rotate inside the two moving blocks 3 respectively, and one end of the two worms 7 passes through one end of the two moving blocks 3 respectively;

[0025] The upper surfaces of the two worm gears 7 are meshed with worm wheels 9, the middle parts of the two worm gears 9 are fixedly connected with connecting rods 10, the outer surfaces of the two connecting rods 10 are fixedly connected with transmission gears 11, the two connecting rods 10 rotate inside the two moving blocks 3 respectively, the two transmission gears 11 are meshed with the outer surfaces of the two racks 2 respectively, the worm wheels 9, the transmission gears 11 and the worm gears 7 are arranged inside the moving block 3, one end of the two worm gears 7 is fixedly connected with the rotating blocks 8 respectively, the two rotating blocks 8 are provided with four through holes inside, the positioning rods 12 are slidably inserted inside the through holes, one end of the positioning rod 12 is threadedly connected to one end of the moving block 3, the lower ends of the two racks 2 are fixedly connected with reinforcement blocks 14, one end of the two reinforcement blocks 14 is fixed to the upper surface of the bottom plate 1, the bottom plate 1, the racks 2 and the reinforcement blocks 14 are triangular, the lower surface of the bottom plate 1 is fixedly connected with four mounting blocks 15, and the upper surfaces of the two racks 2 are fixedly connected with the top plate 13;

[0026] The two racks 2 are fixed on the upper surface of the base plate 1, and the position between the rack 2 and the base plate 1 is fixed by the reinforcing block 14. By rotating the two rotating blocks 8, the two worm gears 7 are respectively rotated inside the two moving blocks 3, and the two worm gears 9 are driven to rotate by the two worm gears 7, and the connecting rod 10 and the transmission gear 11 are driven to rotate by the worm gear 9. The transmission gear 11 is engaged with the rack 2 during rotation, and the moving block 3 is driven to move up and down along the rack 2, so that the limit block 5 slides inside the limit groove 6 to control the position between the rack 2 and the moving block 3. When the two moving blocks 3 are adjusted to the same height, the positioning rod 12 is inserted into the through hole. Since one end of the positioning rod 12 is provided with a thread, one end of the positioning rod 12 is threadedly connected to one end of the moving block 3. By rotating the rotating block 8 and the worm gear 7, the display board body 17 can be freely raised and lowered, which is suitable for people of different heights to use the display board body 17.

[0027] Embodiment 2: In Embodiment 1, there is still the problem that the existing display board is not easy to disassemble, and when the display board is damaged, it is not easy to replace the display board. Therefore, based on Embodiment 1, this embodiment also includes:

[0028] In the specific implementation process, Figure 2 and Figure 3 As shown, the other ends of the two moving blocks 3 are fixedly connected with rectangular plate-shaped placing plates 16, and the upper surfaces of the two placing plates 16 are provided with display board bodies 17. One side of the display board body 17 is fixedly connected with two L-shaped block-shaped control boards 18, and the upper surfaces of the two moving blocks 3 are provided with control grooves 19. The two control boards 18 are respectively slidably inserted in the two control grooves 19, and the two placing plates 16 are fixed to the other ends of the two moving blocks 3. The display board body 17 is slid from top to bottom so that the two control boards 18 are respectively slid in the two control grooves 19, and the display board body 17 is placed on the upper surfaces of the two placing plates 16. The display board body 17 is fixed to the other ends of the two moving blocks 3. When the display board body 17 is damaged, it is convenient to replace the display board body 17.

[0029] Specifically, the working principle and operation method of the utility model are as follows:

[0030] Step 1, by rotating the two rotating blocks 8, the two worm gears 7 are respectively rotated inside the two moving blocks 3, and the two worm gears 9 are driven to rotate by the two worm gears 7, and the connecting rod 10 and the transmission gear 11 are driven to rotate by the worm gear 9, and the transmission gear 11 is engaged with the rack 2 during rotation, so as to drive the moving block 3 to move up and down along the rack 2, so that the limit block 5 slides inside the limit groove 6, and the position between the rack 2 and the moving block 3 is controlled. When the two moving blocks 3 are adjusted to the same height, the positioning rod 12 is inserted into the through hole. Since one end of the positioning rod 12 is provided with a thread, one end of the positioning rod 12 is threadedly inserted into one end of the moving block 3 to fix the position of the rotating block 8 and the worm gear 7, and the display board body 17 can be freely raised and lowered, which is suitable for people of different heights to use the display board body 17;

[0031] Step 2: Slide the display board body 17 from top to bottom, so that the two control boards 18 slide inside the two control grooves 19 respectively, place the display board body 17 on the upper surface of the two placement boards 16, and fix the display board body 17 to the other end of the two moving blocks 3. When the display board body 17 is damaged, it is convenient to replace the display board body 17;

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A display board, comprising a bottom plate (1), characterized in that: The bottom plate (1) is in the shape of a rectangular plate. Two racks (2) are vertically fixedly connected to the upper surface of the bottom plate (1). The outer surfaces of the two racks (2) are slidably connected to moving blocks (3). The upper surfaces of the two moving blocks (3) are provided with rectangular sliding holes (4). The two racks (2) slide inside the two sliding holes (4) respectively. Two limit blocks (5) are fixedly connected to the inner sides of the two sliding holes (4). Limiting grooves (6) are provided on both sides of the two racks (2). The limit blocks (5) slide inside the limit grooves (6). The limit blocks (5) and the limit grooves (6) are both trapezoidal. The insides of the two moving blocks (3) are rotatably connected to driving mechanisms.

2. A display board according to claim 1, characterized in that: The driving mechanism comprises a worm (7), wherein the two worms (7) rotate inside the two moving blocks (3) respectively, and one end of the two worms (7) penetrates one end of the two moving blocks (3) respectively.

3. A display board according to claim 2, characterized in that: The upper surfaces of the two worms (7) are meshingly connected with a worm wheel (9), the middle parts of the two worm wheels (9) are fixedly connected with a connecting rod (10), and the outer surfaces of the two connecting rods (10) are fixedly connected with a transmission gear (11).

4. A display board according to claim 3, characterized in that: The two connecting rods (10) rotate inside the two moving blocks (3) respectively, the two transmission gears (11) are respectively meshed with the outer surfaces of the two racks (2), and the worm wheel (9), the transmission gear (11) and the worm (7) are all arranged inside the moving block (3).

5. A display board according to claim 4, characterized in that: One end of the two worm gears (7) is respectively fixedly connected to a rotating block (8), and four through holes are provided inside the two rotating blocks (8). A positioning rod (12) is slidably inserted inside the through hole, and one end of the positioning rod (12) is threadedly connected to one end of the moving block (3).

6. A display board according to claim 5, characterized in that: The lower ends of the two racks (2) are fixedly connected to a reinforcing block (14), one end of the two reinforcing blocks (14) is fixed to the upper surface of the bottom plate (1), the bottom plate (1), the racks (2) and the reinforcing blocks (14) form a triangle, the lower surface of the bottom plate (1) is fixedly connected to four mounting blocks (15), and the upper surfaces of the two racks (2) are fixedly connected to a top plate (13).

7. A display board according to claim 1, characterized in that: The other ends of the two moving blocks (3) are fixedly connected to rectangular plate-shaped placement plates (16), and the upper surfaces of the two placement plates (16) are provided with display board bodies (17).

8. A display board according to claim 7, characterized in that: Two L-shaped control panels (18) are fixedly connected to one side of the display board body (17); control grooves (19) are provided on the upper surfaces of the two moving blocks (3); and the two control panels (18) are respectively slidably inserted into the two control grooves (19).

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