Blackboard capable of automatically erasing characters

Abstract

The utility model discloses a blackboard capable of automatically erasing characters, and relates to the technical field of blackboards, the blackboard comprises a bottom plate, an erasing mechanism and a collecting mechanism, the upper end of the bottom plate is fixedly connected with a stand column, the stand column is fixedly connected with a blackboard, the stand column is provided with the erasing mechanism, the lower end of the blackboard is fixedly connected with a supporting plate, and the supporting plate is fixedly connected with the collecting mechanism. The supporting plate makes contact with the stand column, and leakage holes are formed in the supporting plate. According to the blackboard capable of erasing characters automatically, the forward and reverse rotation motor is installed on the stand column, the lead screw is fixed to the output end of the forward and reverse rotation motor, the installation plate is connected to the lead screw in a threaded mode, the erasing plate is fixed to the installation plate, the lead screw is driven to rotate after the forward and reverse rotation motor is started, and then the lead screw and the installation plate make threaded motion; the mounting plate is moved, then the erasing plate fixed to the mounting plate is moved, the blackboard is erased through the erasing plate, manual erasing is not needed, and convenience and rapidness are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of blackboards, in particular to a blackboard capable of automatically erasing words. Background Art

[0002] Blackboards are needed in some teaching places. The utility model patent with the patent authorization announcement number CN215686028U proposes a blackboard, including: a first screen; a second screen; a mounting assembly, wherein the first screen and the second screen are arranged side by side on the mounting assembly, and the mounting assembly is provided with an adjustment part for adjusting the first screen and the second screen to be close to each other. By setting the adjustment part for adjusting the first screen and the second screen to be close to each other on the adjustment assembly, the first screen and the second screen can be adjusted by the adjustment part during the initial installation, so as to avoid the gap between adjacent screens after the blackboard screen is installed due to the uneven surface of the wall and the tilt of the screen. However, the above patent still has the following shortcomings: conventional blackboards are written with chalk, etc., and the blackboard erased after writing often needs to be erased manually, which is not very convenient. After writing with chalk, the chalk dust generated during erasing will fall to the ground, which is inconvenient to clean. Utility Model Content

[0003] The utility model provides an automatically erasable blackboard, which solves the technical problem that a conventional blackboard is written on with chalk or the like, and the blackboard needs to be erased manually after writing, which is inconvenient. The utility model also solves the problem that after writing with chalk, chalk dust generated during erasing falls onto the ground, which is inconvenient to clean.

[0004] In order to solve the above technical problems, the utility model provides an automatically erasable blackboard, including a base plate, an erasing mechanism, and a collecting mechanism. The upper end of the base plate is fixedly connected to a column, the column is fixedly connected to a blackboard, the column is provided with an erasing mechanism, the lower end of the blackboard is fixedly connected to a support plate, the support plate is in contact with the column, a leakage hole is opened in the support plate, the lower end of the support plate is in contact with a collecting cylinder, and the support plate is provided with a collecting mechanism.

[0005] Preferably, the erasing mechanism includes a forward and reverse motor, a screw, a mounting plate, an erasing plate, and a slide groove. The forward and reverse motor is fixedly mounted on the column, and the output end of the forward and reverse motor is rotatably connected to the column. The output end of the forward and reverse motor is fixedly connected to a screw, and the screw and the column are mounted via bearings. The screw is threadedly connected to a mounting plate, and the lower end of the mounting plate is fixedly connected to an erasing plate. A slide groove is provided in the support plate. By designing the erasing mechanism, it is convenient to erase the chalk marks.

[0006] Preferably, an eraser board is slidably connected in the slide groove, and the eraser board is in contact with the blackboard. The eraser board can be limited by designing the slide groove.

[0007] Preferably, the collecting mechanism includes a slot, a block, a support rod, a limit rod and a spring. A slot is opened in the collecting tube, a block is slidably connected in the slot, a support rod is fixedly connected to the block, a limit rod is welded in the support plate, and a spring is arranged on the outside of the limit rod. By designing the collecting mechanism, it is convenient to collect and clean chalk dust.

[0008] Preferably, one end of the spring is fixedly connected to the support rod, and the other end of the spring is fixedly connected to the support plate. By designing the spring, the support rod can be moved under the elastic action of the spring.

[0009] Preferably, the support rod is slidably connected to the outer side of the limiting rod, and the support rod is slidably connected to the inside of the support plate. By designing a movable support plate, the block can be driven to move through the support plate.

[0010] Compared with the related art, the automatic erasable blackboard provided by the utility model has the following beneficial effects:

[0011] The utility model provides a blackboard which can automatically erase words, by installing a forward and reverse motor on a column, fixing a lead screw on the output end of the forward and reverse motor, threading the lead screw in connection with a mounting plate, fixing an erasing plate on the mounting plate, starting the forward and reverse motor to drive the lead screw to rotate, thereby causing threaded movement between the lead screw and the mounting plate, causing the mounting plate to move, thereby causing the erasing plate fixed on the mounting plate to move, erasing the blackboard through the erasing plate, no manual wiping is required, and the system is convenient and quick.

[0012] The utility model provides a blackboard capable of automatically erasing words. The blackboard is designed to contact a collecting tube on a supporting plate, a card slot is provided in the collecting tube, a card block slides in the card slot, a supporting rod is fixed on the card block, and the supporting rod is installed in the supporting plate through a spring. After the chalk dust is moved by the erasing plate, the chalk dust enters the collecting tube through a leakage hole. After the collecting tube is full, the card block is driven to slide out of the card slot by moving the supporting rod. At this time, the collecting tube can be disassembled for cleaning by moving the collecting tube. This design is convenient for cleaning and collecting the chalk dust generated during the use of the blackboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A front cross-sectional view of

[0015] Figure 3 For this utility model Figure 2A in the enlarged view;

[0016] Figure 4 For this utility model Figure 2 Top view of the .

[0017] Numbers in the figure: 1. bottom plate; 2. column; 3. blackboard; 4. erasing mechanism; 5. support plate; 6. leakage hole; 7. collecting cylinder; 8. collecting mechanism; 41. forward and reverse motor; 42. screw rod; 43. mounting plate; 44. erasing plate; 45. slide groove; 81. card slot; 82. card block; 83. support rod; 84. limit rod; 85. spring. DETAILED DESCRIPTION

[0018] See also Figure 1 , Figure 2 , Figure 4 A blackboard with automatic erasability comprises a bottom plate 1, an erasing mechanism 4 and a collecting mechanism 8. A column 2 is fixedly connected to the upper end of the bottom plate 1, a blackboard 3 is fixedly connected to the column 2, the erasing mechanism 4 is arranged on the column 2, a supporting plate 5 is fixedly connected to the lower end of the blackboard 3, the supporting plate 5 is in contact with the column 2, a leakage hole 6 is opened in the supporting plate 5, the lower end of the supporting plate 5 is in contact with a collecting tube 7, and the collecting mechanism 8 is arranged on the supporting plate 5.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The erasing mechanism 4 includes a forward and reverse motor 41, a screw rod 42, a mounting plate 43, an wiping plate 44, and a slide groove 45. The forward and reverse motor 41 is fixedly installed on the column 2, and the output end of the forward and reverse motor 41 is rotatably connected to the column 2. The output end of the forward and reverse motor 41 is fixedly connected with a screw rod 42, and the screw rod 42 and the column 2 are installed through a bearing. The screw rod 42 is threadedly connected with a mounting plate 43, and the lower end of the mounting plate 43 is fixedly connected with an wiping plate 44. A slide groove 45 is opened in the support plate 5, and the wiping plate 44 is slidably connected in the slide groove 45. The wiping plate 44 contacts the blackboard 3. By designing the erasing mechanism 4, it is convenient to erase the handwriting of the chalk.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4The collecting mechanism 8 includes a slot 81, a block 82, a support rod 83, a limit rod 84, and a spring 85. A slot 81 is provided in the collecting tube 7, a block 82 is slidably connected in the slot 81, a support rod 83 is fixedly connected to the block 82, a limit rod 84 is welded in the support plate 5, a spring 85 is provided on the outside of the limit rod 84, one end of the spring 85 is fixedly connected to the support rod 83, and the other end of the spring 85 is fixedly connected to the support plate 5, the support rod 83 is slidably connected to the outside of the limit rod 84, and the support rod 83 is slidably connected to the support plate 5. By designing the collecting mechanism 8, it is convenient to collect and clean chalk dust.

[0021] Working principle: when it is necessary to clean the chalk marks, first start the forward and reverse motor 41. Under the drive of the forward and reverse motor 41, the screw rod 42 fixed on its output end rotates, so that a threaded movement occurs between the screw rod 42 and the mounting plate 43, and then the mounting plate 43 moves. The movement of the mounting plate 43 drives the wiping plate 44 fixed thereon to move, and the blackboard 3 can be wiped by the wiping plate 44. During the movement of the wiping plate 44, the chalk dust in the slide groove 45 opened in the support plate 5 will be driven to move, and the chalk dust enters the leakage hole 6 and then enters the collecting tube 7. When the collecting tube 7 is full and needs to be cleaned, first move the support rod 83. The movement of the support rod 83 drives the block 82 to move, so that the block 82 slides out of the slot 81. At this time, the limit on the collecting tube 7 is released, and the collecting tube 7 can be cleaned.

Claims

1. A blackboard capable of automatically erasing characters, comprising a base plate (1), an erasing mechanism (4), and a collecting mechanism (8). It is characterized in that The upper end of the bottom plate (1) is fixedly connected to a column (2), the column (2) is fixedly connected to a blackboard (3), the column (2) is provided with an erasing mechanism (4), the lower end of the blackboard (3) is fixedly connected to a support plate (5), the support plate (5) is in contact with the column (2), a leak hole (6) is provided in the support plate (5), the lower end of the support plate (5) is in contact with a collecting cylinder (7), and the support plate (5) is provided with a collecting mechanism (8); the collecting mechanism (8) comprises a card slot (81), a card block (82), a support rod (83), a limit rod (84), a spring (85), and a plurality of support rods (86). ), a card slot (81) is provided in the collecting tube (7), a card block (82) is slidably connected in the card slot (81), a support rod (83) is fixedly connected to the card block (82), a limit rod (84) is welded in the support plate (5), and a spring (85) is provided on the outside of the limit rod (84); one end of the spring (85) is fixedly connected to the support rod (83), and the other end of the spring (85) is fixedly connected in the support plate (5); the support rod (83) is slidably connected to the outside of the limit rod (84), and the support rod (83) is slidably connected in the support plate (5).

2. The automatically erasable blackboard according to claim 1, It is characterized in that The erasing mechanism (4) comprises a forward and reverse motor (41), a screw rod (42), a mounting plate (43), an wiping plate (44), and a slide groove (45); the forward and reverse motor (41) is fixedly mounted on the column (2); the output end of the forward and reverse motor (41) is rotatably connected to the column (2); the output end of the forward and reverse motor (41) is fixedly connected to the screw rod (42); the screw rod (42) and the column (2) are mounted via bearings; the screw rod (42) is threadedly connected to the mounting plate (43); the lower end of the mounting plate (43) is fixedly connected to the wiping plate (44); and the support plate (5) is provided with a slide groove (45).

3. The automatically erasable blackboard according to claim 2, It is characterized in that An wiping board (44) is slidably connected in the sliding groove (45), and the wiping board (44) is in contact with the blackboard (3).

Images