Blackboard eraser with self-dust-collection function

Abstract

The invention provides a blackboard eraser with a self-dust-collection function, which comprises a frame body, an annular sealing plate is fixed on the frame body, the frame body is connected with a limiting assembly, the frame body is connected with a blackboard eraser assembly, the blackboard eraser assembly is connected with the limiting assembly, and the blackboard eraser assembly comprises a base, a telescopic piece, a first spring and a blackboard eraser body. A sealing convex body is fixed on the blackboard eraser body and is matched with the annular sealing plate; the frame body is connected with a dust collection assembly, and the dust collection assembly comprises a rotating motor and fan blades. Fan blades are driven by a rotating motor to rotate, so that air in the frame body is conveniently discharged, meanwhile, external air enters the frame body through a gap between a sealing convex body and an annular sealing plate, chalk dust is brought into the frame body, the dust collection function is achieved, the blackboard eraser body is reset through the elastic force of a first spring, and the dust collection effect is improved. Therefore, the sealing convex body is matched with the annular sealing plate, sealing is achieved, and dust in the frame body is prevented from returning to the outside.

Description

Technical Field

[0001] The invention relates to the technical field of teaching supplies, and mainly relates to a blackboard eraser with a self-dust absorption function. Background Art

[0002] Blackboard erasers are common items in the existing teaching field. They are mainly used to wipe off the handwriting written by teachers on the blackboard with chalk, so that teachers can write on the blackboard again. When using the blackboard eraser to wipe the blackboard, some chalk dust will float around the blackboard eraser as the blackboard eraser wipes quickly, and can be easily inhaled by teachers and students, seriously affecting the health of teachers and students. The chalk dust around the blackboard eraser needs to be absorbed and cleaned.

[0003] When ordinary blackboard erasers are used to wipe the blackboard, powder will fly all over the sky, which seriously affects the health of teachers and students. Although there are some dust-proof blackboard erasers, they are not effective or inconvenient to use. For teachers, dust flying all over the sky will cause serious pollution to the environment and affect the learning environment of students. In addition, the absorbed chalk dust may return to the outside world due to airflow. Therefore, it is necessary to design a blackboard eraser with self-dust absorption function to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a blackboard eraser with self-dust absorption function to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a blackboard eraser with a self-dust suction function, comprising a frame, an annular sealing plate is fixed to the inner wall of the top of the frame, limiting components are connected to the two sides of the bottom of the frame, the top of the frame is connected to the blackboard eraser component, and the bottom of the blackboard eraser component is connected to the limiting component, the blackboard eraser component comprises a base connected to the lower surface of the inner part of the frame, a telescopic member connected to the two sides of the top of the base, a first spring sleeved on the telescopic member, and a blackboard eraser body connected to the top of the telescopic member, a sealing convex body is fixed to the outer wall of the bottom of the blackboard eraser body, the sealing convex body cooperates with the annular sealing plate, the lower surface of the sealing convex body and the bottom line of the annular sealing plate are in the same plane, and the upper surface of the sealing convex body is an inclined surface;

[0006] Dust collection components are connected to both sides of the frame, and the dust collection components include a rotating motor connected to one side of the frame and a fan blade connected to a driving end of the rotating motor.

[0007] In the present invention, the fan blades are driven to rotate by the rotating motor, so that the air inside the frame is discharged. At the same time, the outside air enters the frame through the gap between the sealing convex body and the annular sealing plate, thereby bringing the chalk dust into the frame. The elastic force of the first spring facilitates the reset of the blackboard eraser body. When the blackboard eraser body descends, the sealing convex body can be separated from the annular sealing plate, so that the chalk dust on the annular sealing plate slides into the frame.

[0008] Furthermore, an annular baffle is fixed at the bottom of the blackboard eraser body, and the annular baffle cooperates with the base.

[0009] In the present invention, the annular baffle can prevent chalk dust from entering the interior of the telescopic member, resulting in the need for additional cleaning of the blackboard eraser assembly.

[0010] Furthermore, a positioning groove is provided on the lower surface of the inner part of the frame, and the groove body of the positioning groove matches with the base.

[0011] In the present invention, the positioning groove can limit the position of the base, thereby preventing the position of the base from being offset when the base is installed.

[0012] Furthermore, buffer grooves are provided on both sides of the positioning groove, the groove body of the buffer groove is connected to a limiting assembly, the limiting assembly includes a second spring connected to the groove body of the buffer groove and a positioning column connected to one side of the second spring, the positioning column cooperates with the base, and the positioning column is slidably connected to the groove body of the buffer groove.

[0013] In the present invention, the elastic force of the second spring facilitates the reset of the positioning column, thereby facilitating the matching of the positioning column with the base.

[0014] Furthermore, limiting grooves are provided on both sides of the bottom of the base, and the groove bodies of the limiting grooves cooperate with the positioning columns.

[0015] In the present invention, the limiting groove cooperates with the positioning column to limit the position of the base, thereby fixing the base.

[0016] Furthermore, rectangular holes are provided on both sides of the frame, dustproof nets are installed on both sides of the rectangular hole, a fixing plate is fixed on one side of the rectangular hole, the fixing plate is located between the two dustproof nets, and one side of the fixing plate is connected to the rotating motor.

[0017] In the present invention, the dustproof net prevents external dust from entering the interior of the frame, and prevents internal chalk dust from entering the outside.

[0018] Furthermore, rotating grooves are provided on both sides of the top of the frame body, the groove body of the rotating groove is rotatably connected to the roller, and a material discharge groove is provided on one side of the bottom of the groove body of the rotating groove.

[0019] In the present invention, the roller can prevent the chalk dust from falling, thereby facilitating the collection of the chalk dust.

[0020] Furthermore, the material discharge trough is an inclined trough, the trough body of the material discharge trough is connected to a cleaning plate, and a brush is connected to one side of the cleaning plate.

[0021] In the present invention, the material discharge trough is an inclined trough to facilitate the chalk dust to slide down into the frame, and the brush contacts the roller to facilitate cleaning the chalk dust on the surface of the roller.

[0022] Furthermore, the annular sealing plate is funnel-shaped, and the upper opening of the annular sealing plate is larger than the lower opening.

[0023] In the present invention, the annular sealing plate is funnel-shaped to facilitate the chalk dust falling on the annular sealing plate to slide down, so that the chalk dust enters the frame through the gap between the sealing protrusion and the annular sealing plate.

[0024] Furthermore, sliding holes are provided on both sides of the bottom of the frame, and the hole bodies of the sliding holes are connected to the buffer groove;

[0025] A push-pull plate is fixed at the bottom of one end of the positioning column, and the push-pull plate is slidably connected with the hole body of the sliding hole.

[0026] In the present invention, the slide hole cooperates with the push-pull plate to improve the stability of the push-pull plate, and the push-pull plate can push the positioning column to move, so that the positioning column can be easily separated from the limiting groove.

[0027] Furthermore, a bevel is provided on one side of the top of the positioning column, and the bevel matches with the base.

[0028] In the present invention, the beveled edge facilitates the base to press the positioning post, thereby moving the positioning post.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] Firstly, the present invention can block the falling of chalk dust by contacting the blackboard with the roller, so that the chalk dust falls onto the annular sealing plate, and the fan blades are driven to rotate by the rotating motor, so that the air inside the frame is discharged, and at the same time, the outside air enters the frame through the gap between the sealing convex body and the annular sealing plate, so that the chalk dust is brought into the frame to achieve the dust collection function, and the blackboard eraser body is reset by the elastic force of the first spring, so that the sealing convex body cooperates with the annular sealing plate, so as to achieve sealing, avoid the dust in the frame from returning to the outside, avoid the serious environmental pollution caused by the flying of chalk dust, and avoid affecting the learning environment of students.

[0031] Secondly, the present invention moves the positioning column to make it separate from the limiting groove, so that the blackboard eraser body can be disassembled, and then the chalk dust in the frame can be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of the present invention;

[0034] Figure 3 A cross-sectional view of the present invention as a whole;

[0035] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0036] Figure 5 A cross-sectional view of the present invention as a whole;

[0037] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0038] Figure 7 for Figure 5 Enlarged view of center C.

[0039] In the figure: 10, frame; 11, rectangular hole; 12, rotating groove; 13, feeding groove; 14, positioning groove; 15, annular sealing plate; 16, sliding hole; 20, dust suction assembly; 21, rotating motor; 22, fan blade; 30, blackboard eraser assembly; 31, base; 311, limiting groove; 32, telescopic member; 33, first spring; 34, blackboard eraser body; 341, sealing protrusion; 342, annular baffle; 40, dustproof net; 50, roller; 60, cleaning plate; 61, brush; 70, limiting assembly; 71, second spring; 72, positioning column; 721, push-pull plate; 722, bevel. DETAILED DESCRIPTION

[0040] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0041] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The terms used herein and / or include any and all combinations of one or more related listed items.

[0043] For examples, please refer to the attached Figure 1-7 A blackboard eraser with a self-dust suction function comprises a frame 10, an annular sealing plate 15 is fixed to the inner wall at the top of the frame 10, limiting components 70 are connected to the two sides of the bottom of the frame 10, the top of the frame 10 is connected to the blackboard eraser component 30, and the bottom of the blackboard eraser component 30 is connected to the limiting components 70. The blackboard eraser component 30 comprises a base 31 connected to the lower surface of the inner part of the frame 10, telescopic parts 32 connected to the two sides of the top of the base 31, a first spring 33 sleeved on the telescopic part 32 and a blackboard eraser body 34 connected to the top of the telescopic part 32, a sealing convex body 341 is fixed to the outer wall at the bottom of the blackboard eraser body 34, the sealing convex body 341 cooperates with the annular sealing plate 15, the lower surface of the sealing convex body 341 and the bottom line of the annular sealing plate 15 are in the same plane, and the upper surface of the sealing convex body 341 is an inclined surface.

[0044] The dust collecting assembly 20 is connected to both sides of the frame 10 . The dust collecting assembly 20 includes a rotating motor 21 connected to one side of the frame 10 and a fan blade 22 connected to a driving end of the rotating motor 21 .

[0045] It should be noted that, in the present embodiment, the fan blades 22 are driven to rotate by rotating the motor 21, thereby facilitating the discharge of air inside the frame 10. At the same time, the outside air enters the frame 10 through the gap between the sealing protrusion 341 and the annular sealing plate 15, thereby bringing the chalk dust into the frame 10. The elastic force of the first spring 33 facilitates the reset of the eraser body 34. When the eraser body 34 descends, the sealing protrusion 341 can be separated from the annular sealing plate 15, thereby allowing the chalk dust on the annular sealing plate 15 to slide into the frame 10.

[0046] For examples, please refer to the attached Figure 5 An annular baffle 342 is fixed to the bottom of the blackboard eraser body 34 , and the annular baffle 342 cooperates with the base 31 .

[0047] It should be noted that, in the present embodiment, the annular baffle 342 can prevent chalk dust from entering the interior of the telescopic member 32 , which would require additional cleaning of the blackboard eraser assembly 30 .

[0048] For examples, please refer to the attached Figure 5 A positioning groove 14 is provided on the lower surface of the frame 10 , and the groove body of the positioning groove 14 matches with the base 31 .

[0049] It should be noted that, in this embodiment, the positioning groove 14 can limit the position of the base 31 to prevent the base 31 from being offset when the base 31 is installed.

[0050] For examples, please refer to the attached Figure 6 Buffer grooves are provided on both sides of the positioning groove 14, and the groove body of the buffer groove is connected to the limiting assembly 70. The limiting assembly 70 includes a second spring 71 connected to the groove body of the buffer groove and a positioning column 72 connected to one side of the second spring 71. The positioning column 72 cooperates with the base 31, and the positioning column 72 is slidably connected to the groove body of the buffer groove.

[0051] It should be noted that, in this embodiment, the elastic force of the second spring 71 facilitates the reset of the positioning column 72 , thereby facilitating the cooperation between the positioning column 72 and the base 31 .

[0052] For examples, please refer to the attached Figure 6 Limiting grooves 311 are provided on both sides of the bottom of the base 31 , and the groove bodies of the limiting grooves 311 cooperate with the positioning columns 72 .

[0053] It should be noted that, in the present embodiment, the limiting groove 311 cooperates with the positioning column 72 to limit the position of the base 31 , thereby fixing the base 31 .

[0054] For examples, please refer to the attached Figure 2 Rectangular holes 11 are provided on both sides of the frame 10, dustproof nets 40 are installed on both sides of the rectangular hole 11, a fixing plate is fixed on one side of the rectangular hole 11, the fixing plate is located between the two dustproof nets 40, and a rotating motor 21 is connected to one side of the fixing plate.

[0055] It should be noted that, in this embodiment, the dustproof net 40 prevents external dust from entering the interior of the frame 10 and prevents internal chalk dust from entering the outside.

[0056] For examples, please refer to the attached Figure 4 A rotating groove 12 is provided on both sides of the top of the frame body 10 , the groove body of the rotating groove 12 is rotatably connected to the roller 50 , and a material discharge groove 13 is provided on one side of the bottom of the groove body of the rotating groove 12 .

[0057] It should be noted that, in the present embodiment, the roller 50 can prevent the chalk dust from falling, thereby facilitating the collection of the chalk dust.

[0058] For examples, please refer to the attached Figure 4 The material discharge trough 13 is an inclined trough, and the trough body of the material discharge trough 13 is connected to the cleaning plate 60, and a brush 61 is connected to one side of the cleaning plate 60.

[0059] It should be noted that, in the present embodiment, the discharge chute 13 is an inclined chute to facilitate the chalk dust to slide down into the frame 10 , and the brush 61 contacts the roller 50 to facilitate cleaning the chalk dust on the surface of the roller 50 .

[0060] For examples, please refer to the attached Figure 3 The annular sealing plate 15 is funnel-shaped, and the upper opening of the annular sealing plate 15 is larger than the lower opening.

[0061] It should be noted that, in this embodiment, the annular sealing plate 15 is funnel-shaped to facilitate the chalk dust falling on the annular sealing plate 15 to slide down, so that the chalk dust enters the frame 10 through the gap between the sealing protrusion 341 and the annular sealing plate 15 .

[0062] For examples, please refer to the attached Figure 6 , sliding holes 16 are provided on both sides of the bottom of the frame 10, and the hole body of the sliding hole 16 is connected to the buffer groove;

[0063] A push-pull plate 721 is fixed to the bottom of one end of the positioning column 72 , and the push-pull plate 721 is slidably connected to the hole body of the sliding hole 16 .

[0064] It should be noted that, in the present embodiment, the slide hole 16 cooperates with the push-pull plate 721 to improve the stability of the push-pull plate 721 , and the push-pull plate 721 can push the positioning column 72 to move, so as to facilitate the positioning column 72 to be separated from the limiting groove 311 .

[0065] For examples, please refer to the attached Figure 6 A bevel 722 is provided on one side of the top of the positioning column 72 , and the bevel 722 matches with the base 31 .

[0066] It should be noted that, in this embodiment, the bevel 722 facilitates the base 31 to squeeze the positioning post 72, thereby moving the positioning post 72.

[0067] The specific operation mode of the present invention is as follows:

[0068] When it is necessary to wipe the blackboard, the user picks up the frame 10, makes the blackboard eraser body 34 contact the blackboard, and then presses the blackboard eraser body 34 to shrink the blackboard eraser body 34 until the roller 50 contacts the blackboard. At this time, the sealing protrusion 341 is separated from the annular sealing plate 15, and the user moves the blackboard eraser body 34 along the direction of rotation of the roller 50 to wipe the blackboard. The roller 50 can block the falling of chalk dust and make the chalk dust fall onto the annular sealing plate 15. At the same time, the fan blades 22 are driven to rotate by the rotating motor 21, so as to facilitate the discharge of air inside the frame 10. At the same time, the outside air enters the frame 10 through the gap between the sealing protrusion 341 and the annular sealing plate 15, thereby bringing the chalk dust into the frame 10 to achieve the dust collection function.

[0069] When the blackboard is stopped from being erased, the blackboard eraser body 34 is reset by the elastic force of the first spring 33, so that the sealing protrusion 341 cooperates with the annular sealing plate 15, thereby achieving sealing and preventing the dust in the frame 10 from returning to the outside.

[0070] By moving the positioning post 72 to disengage from the limiting groove 311 , the blackboard eraser body 34 can be removed, thereby facilitating cleaning of the chalk dust in the frame 10 .

[0071] The above is an exemplary description of the present invention in combination with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A blackboard eraser with self-dust absorption function, comprising a frame (10), characterized in that: An annular sealing plate (15) is fixed to the inner wall of the top of the frame (10); both sides of the bottom of the frame (10) are connected to the limiting components (70); the top of the frame (10) is connected to the blackboard eraser component (30); the bottom of the blackboard eraser component (30) is connected to the limiting components (70); the blackboard eraser component (30) comprises a base (31) connected to the lower surface of the inner part of the frame (10); a telescopic member (32) connected to both sides of the top of the base (31); a first spring (33) sleeved on the telescopic member (32); and a blackboard eraser body (34) connected to the top of the telescopic member (32); a sealing convex body (341) is fixed to the outer wall of the bottom of the blackboard eraser body (34); the sealing convex body (341) is matched with the annular sealing plate (15); the lower surface of the sealing convex body (341) and the bottom line of the annular sealing plate (15) are in the same plane; and the upper surface of the sealing convex body (341) is an inclined surface; The dust collection components (20) are connected to both sides of the frame (10), and the dust collection components (20) include a rotating motor (21) connected to one side of the frame (10) and a fan blade (22) connected to a driving end of the rotating motor (21).

2. The blackboard eraser with self-dust absorption function according to claim 1, characterized in that: A positioning groove (14) is provided on the inner lower surface of the frame body (10), and the groove body of the positioning groove (14) matches with the base (31).

3. The blackboard eraser with self-dust absorption function according to claim 2, characterized in that: Buffer grooves are provided on both sides of the positioning groove (14); the groove body of the buffer groove is connected to a limiting assembly (70); the limiting assembly (70) comprises a second spring (71) connected to the groove body of the buffer groove and a positioning column (72) connected to one side of the second spring (71); the positioning column (72) cooperates with the base (31); and the positioning column (72) is slidably connected to the groove body of the buffer groove.

4. The blackboard eraser with self-dust absorption function according to claim 3, characterized in that: Limiting grooves (311) are provided on both sides of the bottom of the base (31), and the groove body of the limiting groove (311) cooperates with the positioning column (72).

5. The blackboard eraser with self-dust absorption function according to claim 1, characterized in that: Rectangular holes (11) are provided on both sides of the frame (10), dustproof nets (40) are installed on both sides of the rectangular hole (11), a fixing plate is fixed on one side of the rectangular hole (11), the fixing plate is located between the two dustproof nets (40), and one side of the fixing plate is connected to a rotating motor (21).

6. The blackboard eraser with self-dust absorption function according to claim 1, characterized in that: The frame (10) has rotating grooves (12) on both sides of the top, the groove body of the rotating groove (12) is rotatably connected to the roller (50), and a material discharge groove (13) is provided on one side of the groove body bottom of the rotating groove (12).

7. The blackboard eraser with self-dust absorption function according to claim 6, characterized in that: The material discharge chute (13) is an inclined chute, the chute body of the material discharge chute (13) is connected to a cleaning plate (60), and a brush (61) is connected to one side of the cleaning plate (60).

8. The blackboard eraser with self-dust absorption function according to claim 7, characterized in that: The annular sealing plate (15) is funnel-shaped, and the upper opening of the annular sealing plate (15) is larger than the lower opening.

9. The blackboard eraser with self-dust absorption function according to claim 3, characterized in that: Sliding holes (16) are provided on both sides of the bottom of the frame (10), and the hole bodies of the sliding holes (16) are connected to the buffer groove; A push-pull plate (721) is fixed to the bottom of one end of the positioning column (72), and the push-pull plate (721) is slidably connected to the hole body of the sliding hole (16).

10. The blackboard eraser with self-dust absorption function according to claim 3, characterized in that: A bevel (722) is provided on one side of the top of the positioning column (72), and the bevel (722) matches the base (31).

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