Dustproof blackboard eraser

Abstract

The utility model discloses a dustproof blackboard eraser, which relates to the technical field of blackboard erasers and comprises a shell and a mounting seat, a handle and a cleaning eraser are fixedly mounted on the outer side of the shell, a sliding sleeve is movably mounted on the outer side of the shell, a limiting block is fixedly mounted on the outer side of the sliding sleeve, a fixing plate is fixedly mounted on the inner side of the shell, and a fixing plate is fixedly mounted on the mounting seat. Outer sleeves are fixedly mounted on the two sides of the fixing plate, and adjusting screw rods are rotationally mounted in sliding sleeves. The blackboard eraser is provided with the sliding sleeve, the dust collection hose and the dust collector, when the blackboard eraser is used, the sliding sleeve is unfolded from the two sides of the blackboard eraser shell, the dust collector sucks dust into the blackboard eraser through the dust collection holes in the surface of the sliding sleeve, the dust is prevented from flying away at will, and the dustproof effect of the blackboard eraser is improved; and the mounting seat is adsorbed on the blackboard through the magnetic attraction block, the dust collection hose is connected with the blackboard eraser shell through the thread structure, the overall size is small, rapid disassembly and assembly can be achieved, and convenience is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of blackboard erasers, in particular to a dustproof blackboard eraser. Background Art

[0002] A blackboard is a flat surface that can be written on repeatedly with chalk. It has a hard surface and is mostly used for teaching. A blackboard eraser is a tool specifically used to clean chalk writing on a blackboard. A blackboard eraser is generally made of a small rectangular wooden board with velvet or palm wool added.

[0003] Nowadays, most blackboard erasers do not have the dust absorption function. The dust cleaned up will float around randomly and may enter the mouths and noses of people around them, affecting their health, and the dust prevention effect cannot be improved.

[0004] The existing vacuum type blackboard eraser is large in size, and the vacuum mechanism is directly fixed to the wall or the blackboard by bolts, and cannot be moved to other places for use at will, which is less convenient, and the blackboard eraser part cannot be disassembled and used separately, so the functionality cannot be improved. Utility Model Content

[0005] The purpose of the utility model is to provide a dustproof blackboard eraser to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a dustproof blackboard eraser, comprising a shell and a mounting base, a handle and a cleaning eraser are fixedly installed on the outer side of the shell, a sliding sleeve is movably installed on the outer side of the shell, a limiting block is fixedly installed on the outer side of the sliding sleeve, a fixing plate is fixedly installed on the inner side of the shell, an outer sleeve is fixedly installed on both sides of the fixing plate, an adjusting screw is rotatably installed inside the sliding sleeve, a dust suction hole is opened on the outer side of the sliding sleeve, a connecting pipe is fixedly installed on the lower end of the shell, a dust suction hose is threadedly installed on the outer side of the connecting pipe, and a vacuum cleaner and a buckle are fixedly installed on the outer side of the mounting base.

[0007] Preferably, the handle and the cleaning wipe are respectively located at the front and rear sides of the shell, the cleaning wipe is a wool cleaning wipe, and a magnetic suction block is fixedly installed on the outer side of the mounting seat.

[0008] Preferably, two sliding sleeves are symmetrically arranged on the left and right, and the limit block is fitted with the inner side of the shell opening.

[0009] Preferably, the adjusting screw is threadedly connected to the inner side of the outer sleeve, and the center of the outer sleeve and the center of the adjusting screw are located on the same straight line.

[0010] Preferably, a plurality of dust suction holes are provided, and the dust suction holes are located on a side of the sliding sleeve close to the cleaning wipe.

[0011] Preferably, the connecting pipe is connected to the interior of the shell, and one end of the dust suction hose away from the connecting pipe is fixedly connected to the dust suction port of the vacuum cleaner.

[0012] Preferably, two buckles are provided, and the dust suction hose is snap-connected to the inner side of the buckles.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a sliding sleeve, a dust suction hose and a vacuum cleaner. When the blackboard eraser is in use, the sliding sleeve is unfolded from both sides of the blackboard eraser shell, and the vacuum cleaner sucks the dust into the inside through the dust suction holes on the surface of the sliding sleeve, thereby preventing the dust from scattering randomly and improving the dustproof effect of the blackboard eraser;

[0015] 2. The utility model is provided with a mounting base, which is fixed together with the vacuum cleaner. The mounting base is adsorbed on the blackboard through a magnetic suction block, and the vacuum hose is connected to the blackboard eraser shell through a threaded structure. The overall volume is small and can be quickly disassembled and assembled, which greatly improves convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the shell of the utility model;

[0019] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0020] Among them: 1. Shell; 2. Mounting base; 3. Handle; 4. Cleaning wipe; 5. Sliding sleeve; 6. Limit block; 7. Fixing plate; 8. Outer sleeve; 9. Adjusting screw; 10. Dust suction hole; 11. Connecting pipe; 12. Dust suction hose; 13. Vacuum cleaner; 14. Buckle; 15. Magnetic block. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1

[0023] See also Figure 1 In the figure, a dustproof blackboard eraser comprises a shell 1 and a mounting base 2, a handle 3 and a cleaning eraser 4 are fixedly mounted on the outer side of the shell 1, a sliding sleeve 5 is movably mounted on the outer side of the shell 1, a limiting block 6 is fixedly mounted on the outer side of the sliding sleeve 5, a fixing plate 7 is fixedly mounted on the inner side of the shell 1, outer sleeves 8 are fixedly mounted on both sides of the fixing plate 7, an adjusting screw 9 is rotatably mounted inside the sliding sleeve 5, a dust suction hole 10 is opened on the outer side of the sliding sleeve 5, a connecting pipe 11 is fixedly mounted on the lower end of the shell 1, a dust suction hose 12 is threadedly mounted on the outer side of the connecting pipe 11, and a dust collector 13 and a buckle 14 are fixedly mounted on the outer side of the mounting base 2.

[0024] See also Figure 1 and Figure 4 The handle 3 and the cleaning wipe 4 are respectively located at the front and rear sides of the shell 1 , the cleaning wipe 4 is a wool cleaning wipe, and a magnetic suction block 15 is fixedly installed on the outer side of the mounting base 2 .

[0025] In this embodiment, when in use, the hand passes through the handle 3 to hold the housing 1, the cleaning wipe 4 is attached to and moved against the blackboard, and the mounting base 2 is adsorbed on the blackboard through the magnetic block 15.

[0026] See also Figure 3 Two sliding sleeves 5 are symmetrically arranged on the left and right, and the limit block 6 is in contact with the inner side of the opening of the shell 1.

[0027] In this embodiment, the sliding sleeve 5 slides horizontally along the left and right sides of the housing 1 , and the limit block 6 prevents the sliding sleeve 5 from falling off.

[0028] See also Figure 3 The adjusting screw 9 is threadedly connected to the inner side of the outer sleeve 8, and the center of the outer sleeve 8 and the center of the adjusting screw 9 are located on the same straight line.

[0029] In this embodiment, the adjusting screw 9 is rotated, and the adjusting screw 9 slides along the inner side of the outer sleeve 8 through the thread structure, so as to adjust the horizontal position of the sliding sleeve 5.

[0030] Working principle: The mounting base 2 is adsorbed on the blackboard through the magnetic block 15, the vacuum hose 12 is rotated and fixed to the connecting pipe 11 through the threaded structure, the hand is passed through the handle 3 to hold the shell 1, the cleaning wipe 4 is attached to and moved with the blackboard to clean the blackboard, and the vacuum cleaner 13 is turned on. The cleaned dust is sucked into the inside of the shell 1 and the sliding sleeve 5 through the vacuum hole 10, and then transmitted to the vacuum cleaner 13 through the vacuum hose 12 to prevent the dust from floating randomly. When the vacuum function is not needed, the vacuum hose 12 is separated from the connecting pipe 8 and the vacuum cleaner 13 is turned on. The dust hose 12 is snap-fitted and installed on the buckle 14 to prevent the dust hose 12 from falling off, and the adjusting screw 9 is turned. The adjusting screw 9 slides along the inner side of the outer sleeve 8 through the threaded structure, and the sliding sleeve 5 moves with the adjusting screw 9. The sliding sleeve 5 slides horizontally along the left and right sides of the shell 1. The limit block 6 prevents the sliding sleeve 5 from falling off, thereby realizing the horizontal position adjustment of the sliding sleeve 5. The sliding sleeve 5 is stored inside the shell 1, reducing the overall size of the blackboard eraser, and then it can be used as an ordinary blackboard eraser. The magnetic block 15 can be removed and it can be moved to other places for use, which greatly improves convenience.

[0031] Example 2

[0032] See also Figure 4 A plurality of dust suction holes 10 are provided, and the dust suction holes 10 are located on a side of the sliding sleeve 5 close to the cleaning wipe 4 .

[0033] In this embodiment, the dust cleaned by the cleaning wipe 4 enters the interior of the housing 1 and the sliding sleeve 5 through the dust suction hole 10 .

[0034] See also Figure 1 and Figure 3 The connecting pipe 11 is connected to the interior of the housing 1 , and one end of the dust suction hose 12 away from the connecting pipe 11 is fixedly connected to the dust suction port of the dust collector 13 .

[0035] In this embodiment, the dust suction hose 12 is rotated and fixed to the connecting pipe 11 through a threaded structure, and the dust collector 13 is turned on, and the dust is sucked into the dust collector 13 through the dust suction hose 12 .

[0036] See also Figure 1 There are two buckles 14, and the dust suction hose 12 is snap-connected with the inner side of the buckles 14.

[0037] In this embodiment, when vacuuming is not needed, the vacuum hose 12 is removed and the vacuum hose 12 is snap-fitted and installed on the buckle 14 to prevent the vacuum hose 12 from falling off.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof blackboard eraser, comprising a housing (1) and a mounting base (2), characterized in that: A handle (3) and a cleaning wipe (4) are fixedly mounted on the outer side of the shell (1); a sliding sleeve (5) is movably mounted on the outer side of the shell (1); a limit block (6) is fixedly mounted on the outer side of the sliding sleeve (5); a fixing plate (7) is fixedly mounted on the inner side of the shell (1); outer sleeves (8) are fixedly mounted on both sides of the fixing plate (7); an adjusting screw (9) is rotatably mounted inside the sliding sleeve (5); a dust suction hole (10) is provided on the outer side of the sliding sleeve (5); a connecting pipe (11) is fixedly mounted on the lower end of the shell (1); a dust suction hose (12) is threadedly mounted on the outer side of the connecting pipe (11); a dust collector (13) and a buckle (14) are fixedly mounted on the outer side of the mounting seat (2); The handle (3) and the cleaning wipe (4) are respectively located at the front and rear sides of the housing (1); the cleaning wipe (4) is a wool cleaning wipe; a magnetic suction block (15) is fixedly mounted on the outer side of the mounting seat (2); The sliding sleeves (5) are symmetrically arranged in two portions, and the limit block (6) is in contact with the inner side of the opening of the housing (1). The adjusting screw (9) is threadedly connected to the inner side of the outer sleeve (8), and the center of the outer sleeve (8) and the center of the adjusting screw (9) are located on the same straight line. A plurality of dust suction holes (10) are provided, and the dust suction holes (10) are located on a side of the sliding sleeve (5) close to the cleaning wipe (4). The connecting pipe (11) is connected to the interior of the housing (1), and one end of the dust suction hose (12) away from the connecting pipe (11) is fixedly connected to the dust suction port of the dust collector (13). Two buckles (14) are provided, and the dust suction hose (12) is snap-connected to the inner side of the buckle (14).

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