Electric vacuum blackboard eraser

Abstract

The invention discloses an electric vacuum blackboard eraser, which belongs to the technical field of teaching tools, and comprises a gripping plate, a dust collecting box is detachably connected to the top of the gripping plate, a brush plate is movably installed on the top of the dust collecting box, multiple rows of bristles are installed on the top of the brush plate, multiple ash passing holes are provided on the brush plate, a dust filter is detachably installed on the bottom of the dust collecting box, multiple baffles cooperating with the ash passing holes are installed inside the dust collecting box, the baffles are obliquely installed on the inner wall of the dust collecting box and can rotate, a fan is installed inside the gripping plate, a switch is installed at one end of the gripping plate, and multiple exhaust holes are provided at the bottom of the gripping plate. The invention can collect scattered dust during use, reduce the harm of dust to teachers and students, and at the same time, it also has high sealing when not in use, and will not cause the dust collected inside the dust collecting box to leak, thereby reducing the pollution of secondary dust.

Description

Technical Field

[0001] The invention relates to a blackboard eraser, in particular to an electric dust-absorbing blackboard eraser, and belongs to the technical field of teaching tools. Background Art

[0002] The electric blackboard eraser is a new type of blackboard eraser tool, which is designed to improve the classroom teaching environment and reduce the impact of dust on the health of teachers and students. It also has the characteristics of high efficiency and plays a greater role in the daily teaching process.

[0003] However, due to the small size of the blackboard eraser, it is difficult to close the dust hole when not in use, which easily causes the collected dust to leak out when it is picked up or shaken, causing the dust to be raised again, causing harm to the health of teachers and students. Summary of the invention

[0004] The main purpose of the invention is to solve the problem that collected dust is easy to leak, and to provide an electric dust-absorbing blackboard eraser.

[0005] The purpose of the present invention can be achieved by adopting the following technical solutions:

[0006] An electric vacuum blackboard eraser comprises a gripping plate, the edge of the gripping plate is arc-shaped, a dust box is detachably connected to the top of the gripping plate, a brush plate is movably mounted on the top of the dust box, a plurality of rows of bristles are mounted on the top of the brush plate, a plurality of ash passing holes are provided on the brush plate, a dust filter is detachably mounted on the bottom of the dust box, a plurality of baffles cooperating with the ash passing holes are mounted inside the dust box, the baffles are obliquely mounted on the inner wall of the dust box, a fan is mounted inside the gripping plate, a switch is mounted at one end of the gripping plate, and a plurality of exhaust holes are provided at the bottom of the gripping plate.

[0007] Preferably, the bristles are threadably connected to the brush plate.

[0008] Preferably, a slot is provided on the top surface of the dust collecting box, and an inserting plate is provided on the bottom of the brush plate, and the inserting plate and the slot cooperate with each other.

[0009] Preferably, a rotating shaft is installed on the side surface of the bottom end of the baffle, and a torsion spring is sleeved on the outer side of the rotating shaft.

[0010] Preferably, a gap is left between the bottom of the baffle and the dust filter, and a sealing plate is installed on the top of the baffle.

[0011] Preferably, a sealing gasket is bonded to the top of the sealing plate.

[0012] Preferably, a dust outlet hole is provided on one end of the dust collecting box.

[0013] Preferably, a plugging column is installed on the dust outlet hole.

[0014] Preferably, a battery compartment is installed on the side of the gripping plate.

[0015] Preferably, both ends of the brush plate are provided with limit rods, and the dust collecting box is provided with a sliding groove for the limit rods to slide.

[0016] Beneficial technical effects of the present invention: the electric vacuum blackboard eraser of the present invention can collect scattered dust during use, reducing the harm of dust to teachers and students. At the same time, it has a high degree of sealing when not in use, and will not cause the dust collected inside the dust box to leak, reducing secondary dust pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a side view of the overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the brush plate structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the dust collecting box of the present invention;

[0021] Figure 5 It is a schematic diagram of the baffle structure of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle;

[0023] Figure 7 It is a schematic diagram of the internal structure of the dust collection box of the present invention;

[0024] Figure 8 It is a schematic diagram of the internal structure of the gripping plate of the present invention.

[0025] In the figure: 1. holding plate; 2. filling column; 3. limiting rod; 4. dust collecting box; 5. brush plate; 6. bristles; 7. dust passing hole; 8. battery compartment; 9. switch; 10. dust filter; 11. baffle; 12. sealing plate; 13. rotating shaft; 14. torsion spring; 15. dust outlet hole; 16. fan; 17. exhaust hole. DETAILED DESCRIPTION

[0026] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0027] The electric vacuum blackboard eraser provided in this embodiment is as follows: Figure 1 and Figure 2The brush plate 5 is provided with a plurality of holes 7 for passing dust into the dust collecting box 4, and a slot is provided on the top surface of the dust collecting box 4, and a plug plate is provided on the bottom surface of the brush plate 5. The plug plate and the slot cooperate with each other, so that the brush plate 5 can be moved in the dust collecting box 4, and the sealing effect of the connection between the dust collecting box 4 and the brush plate 5 can be ensured. The gripping plate 1 and the dust collecting box 4 are both made of acrylic material, which has low cost and is more lightweight.

[0028] In this embodiment, if Figure 4 , Figure 5 and Figure 6 As shown, a dust filter 10 is detachably installed at the bottom of the dust box 4, and a plurality of baffles 11 cooperating with the ash passing holes 7 are installed inside the dust box 4. The baffle 11 is tiltedly installed on the inner wall of the dust box 4 and can be rotated. By tilting at a certain angle, it is easier to rotate when under pressure. A rotating shaft 13 is installed on the side of the bottom end of the baffle 11, and a torsion spring 14 is sleeved on the outer side of the rotating shaft 13. The baffle 11 can be rotated by the rotating shaft 13, and the rotation of the baffle 11 can be limited by the torsion spring 14, so that the baffle 11 can return to its original position after rotation. A gap is left between the bottom of the baffle 11 and the dust filter 10, which is convenient for dust discharge through one end. The hole 15 is used to pour out the dust inside the dust collecting box 4. A sealing plate 12 is installed on the top of the baffle 11, and the ash hole 7 is blocked by the sealing plate 12. When the blackboard eraser is not in use, the dust inside the dust collecting box 4 will not leak, reducing the pollution of dust to the air. At the same time, by pressing the blackboard eraser when in use, pressure can be generated on the baffle 11 to stagger the sealing plate 12, and the dust can be collected normally through the ash hole 7. This makes it difficult for the dust inside the dust collecting box 4 to overflow even if the sealing plate 12 does not block the ash hole 7 due to the suction force itself. A sealing gasket is bonded to the top of the sealing plate 12. When the ash hole 7 is blocked, the blocking effect is improved and dust leakage is reduced.

[0029] In this embodiment, if Figure 1 , Figure 2 , Figure 7 and Figure 8As shown, a dust outlet hole 15 is provided at one end of the dust box 4, and a filling column 2 is installed on the dust outlet hole 15. The dust accumulated in the dust box 4 is poured out through the dust outlet hole 15. When in use, the dust outlet hole 15 is blocked by the filling column 2 to prevent dust leakage during use. A battery compartment 8 is installed on the side of the gripping plate 1. Commonly used dry batteries or rechargeable batteries are placed in the battery compartment 8 to provide power for the power components for easy use. When using rechargeable batteries, they are equipped with a USB charging port for charging, which is more convenient for daily use. The fan 16 provides wind force, which can generate suction when in use to collect dust generated when wiping the blackboard. A switch 9 is installed at one end of the holding plate 1, and a plurality of exhaust holes 17 are provided at the bottom of the holding plate 1 for discharging filtered air. Limit rods 3 are installed at both ends of the brush plate 5, and a slide groove for the sliding of the limit rod 3 is provided on the dust box 4. The dust box 4 and the slide groove cooperate with each other to effectively limit the brush plate 5. The brush plate 5 can move by pressure, and the brush plate 5 can be reset by the torsion spring 14 when there is no pressure.

[0030] In this embodiment, if Figure 1-Figure 8 As shown, the working process of the electric vacuum blackboard eraser provided in this embodiment is as follows:

[0031] Step 1: By holding the holding plate 1, turn on the switch 9, and then start the fan 16. The fan 16 rotates to generate suction, and the blackboard is wiped by the bristles 6. When wiping the blackboard, a pressure is usually applied to the eraser, and the blackboard will be wiped more cleanly. The applied force can squeeze the brush plate 5, so that the brush plate 5 moves toward the dust box 4. During the movement, the baffle 11 moves on the top wall inside the brush plate 5, leaking the ash hole 7, and then the dust is raised by the bristles 6. The suction force sucks the dust into the dust box 4. After wiping, turn off the switch 9;

[0032] Step 2: After using for a period of time, open the filling column 2 and pour out the dust collected in the dust box 4.

[0033] In summary, in this embodiment, the electric vacuum blackboard eraser according to this embodiment has a simple structure, can collect scattered dust during use, and reduce the harm of dust to teachers and students. At the same time, it has a high degree of sealing when not in use, and will not cause the dust collected inside the dust box 4 to leak, thereby reducing secondary dust pollution.

[0034] The above description is only a further embodiment 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 according to the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which belong to the protection scope of the present invention.

Claims

1. An electric vacuum blackboard eraser, comprising a holding plate (1), characterized in that: The edge of the holding plate (1) is arc-shaped, the top of the holding plate (1) is detachably connected to a dust box (4), the top of the dust box (4) is movably mounted with a brush plate (5), the top of the brush plate (5) is mounted with multiple rows of bristles (6), the brush plate (5) is provided with multiple ash holes (7), the bottom of the dust box (4) is detachably mounted with a dust filter (10), the interior of the dust box (4) is mounted with multiple baffles (11) that cooperate with the ash holes (7), the baffles (11) are obliquely mounted on the inner wall of the dust box (4), a fan (16) is mounted inside the holding plate (1), one end of the holding plate (1) is mounted with a switch (9), the bottom of the holding plate (1) is provided with multiple exhaust holes (17), a gap is left between the bottom of the baffle (11) and the dust filter (10), and a sealing plate (11) is mounted on the top of the baffle (11). 12), a sealing gasket is bonded to the top of the sealing plate (12), a slot is provided on the top surface of the dust box (4), and a plug plate is provided at the bottom of the brush plate (5), the plug plate and the slot cooperate with each other, by holding the holding plate (1), turning on the switch (9), and then starting the fan (16), the fan (16) rotates to generate suction, and the blackboard is wiped by the bristles (6). When wiping the blackboard, a pressure is usually applied to the eraser, and the blackboard will be wiped more cleanly. The applied force can squeeze the brush plate (5), so that the brush plate (5) moves toward the dust box (4). During the movement, the baffle (11) moves on the top wall inside the brush plate (5), leaking the ash hole (7), and then raising dust through the bristles (6). The suction sucks the dust into the dust box (4). After wiping, the switch (9) is turned off.

2. The electric vacuum blackboard eraser according to claim 1, characterized in that: The bristles (6) are threadedly connected to the brush plate (5).

3. The electric vacuum blackboard eraser according to claim 1, characterized in that: A rotating shaft (13) is installed on the side surface of the bottom end of the baffle (11), and a torsion spring (14) is sleeved on the outer side of the rotating shaft (13).

4. The electric vacuum blackboard eraser according to claim 1, characterized in that: A dust outlet hole (15) is provided on one end of the dust collecting box (4).

5. The electric vacuum blackboard eraser according to claim 4, characterized in that: A plugging column (2) is installed on the dust outlet hole (15).

6. The electric vacuum blackboard eraser according to claim 1, characterized in that: A battery compartment (8) is installed on the side of the holding plate (1).

7. The electric vacuum blackboard eraser according to claim 1, characterized in that: Limiting rods (3) are installed at both ends of the brush plate (5), and a sliding groove for the limiting rod (3) to slide is provided on the dust collecting box (4).

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