CN111216476A

CN111216476A - Blackboard eraser with self-dust-collection cleaning function

Info

Publication number: CN111216476A
Application number: CN202010068671.7A
Authority: CN
Inventors: 吴小花; 张洋洋
Original assignee: Individual
Current assignee: Shangrao Moshang Art Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-06-02
Anticipated expiration: 2040-01-21
Also published as: CN111216476B

Abstract

The invention discloses a blackboard eraser with a self-dust-absorption cleaning function, which comprises a housing with an opening at the upper end, wherein the inner wall of the housing is connected with a movable frame arranged along the vertical direction in a sliding manner, and a cleaning device for cleaning chalk dust is arranged on the housing. According to the invention, the movable rod which is connected in the sliding plug cylinder in a sealing and sliding manner is arranged, the movable plate is pressed to enable the sliding plug cylinder to drive the movable rod to move downwards so as to compress the air bag, then the air bag can gradually recover to an initial state under the self elastic action, the external flying chalk dust is sucked into the air bag through the dust absorption hole so as to avoid the chalk dust from flying around, the movable frame can move upwards under the action of the spring to drive the first annular magnet to move upwards after the handwriting on the blackboard is wiped completely through the first annular magnet which is embedded in the side wall of the movable frame, so that the ejector pin is inserted into the dust absorption hole, the chalk dust accumulated in the dust absorption hole is cleaned, the dust absorption hole is prevented from being blocked, and the next use is facilitated.

Description

Blackboard eraser with self-dust-collection cleaning function

Technical Field

The invention relates to the technical field of education and teaching articles, in particular to a blackboard eraser with a dust self-absorption cleaning function.

Background

The blackboard eraser is a common article in the existing teaching field, and is mainly used for wiping out the handwriting written on the blackboard by a teacher through chalk, so that the teacher can conveniently write on the blackboard again.

In the prior device for absorbing and cleaning chalk dust around a blackboard eraser, as described in the invention patent with the application number of 201811337672.6, namely a blackboard eraser for preventing chalk dust from flying, by arranging a deformable mounting block, when the blackboard eraser is separated from a blackboard, a deformed cavity is reset to absorb chalk dust, so that the flying chalk dust is absorbed into the cavity, in the actual operation, the blackboard eraser and the blackboard are continuously rubbed and wiped when the blackboard is wiped, so that the blackboard is quickly wiped clean, but in the invention, the chalk dust can be effectively absorbed only by continuously separating the blackboard eraser from the blackboard, so that a large amount of chalk dust is scattered around the blackboard eraser in the process of wiping the blackboard, and the chalk dust cannot be absorbed, so that the chalk dust can be absorbed by teachers and students, and the health of the teachers and students is seriously influenced, in addition, the blackboard eraser is continuously separated from the blackboard to absorb chalk dust, so that the classroom time is wasted, and the teaching efficiency is reduced.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a blackboard eraser with a dust self-absorption cleaning function.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a blackboard eraser with from clean function of dust absorption, has the open-ended housing including the upper end, the inner wall sliding connection of housing has the movable frame that sets up along vertical direction, be equipped with the sponge in the movable frame, bottom fixedly connected with gasbag in the housing, the sliding plug section of thick bamboo that movable frame lower extreme symmetry fixedly connected with opening is down, sealed sliding connection has the movable rod in the sliding plug section of thick bamboo, micropore, two have been seted up to sliding plug section of thick bamboo upper end lateral wall the lower extreme fixedly connected with clamp plate of movable rod, the relative inner wall fixedly connected with baffle of housing, the movable frame lower extreme passes through spring and baffle upper end elastic connection, install the cleaning device who clears up the chalk dust on the housing.

Preferably, the cleaning device comprises hoses symmetrically connected to the side walls of the airbag, the side wall of the housing is provided with an annular cavity, the hoses are communicated with the annular cavity, the upper end surface of the housing is provided with a plurality of dust suction holes communicated with the annular cavity at equal intervals along the circumferential direction, the side wall of the lower end of the housing is provided with an air outlet communicated with the airbag, and a check valve only allowing air to be discharged from the airbag is installed in the air outlet.

Preferably, the movable frame lateral wall inlays and is equipped with first annular magnet, the ring channel has been seted up to the annular chamber inner wall, ring channel inner wall sliding connection has the second annular magnet that attracts mutually with first annular magnet, second annular magnet upper end fixedly connected with is located the thimble under the dust absorption hole.

The invention has the following beneficial effects:

1. the movable rod is connected in the sliding plug barrel in a sealing and sliding mode, when handwriting on the blackboard is wiped, the movable frame can be quickly pressed, at the moment, air between the sliding plug barrel and the movable rod cannot be quickly exhausted through the micropores in the side wall of the upper end of the sliding plug barrel, the sliding plug barrel drives the movable rod to quickly move downwards, the air bag is compressed, then the air bag can gradually recover to an initial state under the action of the deformation recovery capacity of the air bag, chalk dust floating around the housing can be sucked into the air bag through the dust suction holes in the process of wiping the blackboard, the chalk dust is prevented from floating around, the chalk dust is sucked by teachers and students, and the influence on the health is caused;

2. by arranging the first annular magnet embedded in the side wall of the movable frame, when the handwriting on the blackboard is wiped, the movable frame can drive the first annular magnet to move downwards, the ejector pin moves downwards under the action of the second annular magnet to be separated from the dust suction hole, so that chalk dust is absorbed, after the handwriting on the blackboard is wiped completely, the movable frame can move upwards under the action of the spring, the ejector pin is inserted into the dust suction hole under the action of the second annular magnet, the chalk dust accumulated in the dust suction hole is cleaned, the dust suction hole is prevented from being blocked, and the blackboard is convenient to use next time;

3. through setting up the micropore at a sliding plug section of thick bamboo upper end lateral wall, promote the movable rod rebound in-process at the gasbag for air between a sliding plug section of thick bamboo and the movable rod slowly discharges from micropore department, thereby makes the movable rod drive the gradual recovery of gasbag to initial condition, thereby cleans the in-process to the blackboard and carries out the absorption of continuation to the chalk dust of housing lateral wall, and is more effective to the absorption of chalk dust.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention.

In the figure: the device comprises a housing 1, a movable frame 2, an air bag 3, a pressure plate 4, a sliding plug cylinder 5, a movable rod 6, a micropore 7, a baffle 8, a spring 9, an air outlet hole 10, an annular cavity 11, a dust suction hole 12, a hose 13, a first annular magnet 14, an annular groove 15, a second annular magnet 16 and a thimble 17.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The first embodiment is as follows:

referring to fig. 1, a blackboard eraser with a self-dust-absorption cleaning function comprises a housing 1 with an opening at the upper end, a movable frame 2 arranged along the vertical direction is connected to the inner wall of the housing 1 in a sliding manner, sponge is arranged in the movable frame 2, an air bag 3 is fixedly connected to the bottom in the housing 1, a trash removing port communicated with the side wall of the lower end of the air bag 3 is arranged on the side wall of the housing 1, a sealing plug is arranged on the side wall of the trash removing port and can clean chalk dust sucked in the air bag 3, a sliding plug cylinder 5 with a downward opening is symmetrically and fixedly connected to the lower end of the movable frame 2, a movable rod 6 is connected to the inside of the sliding plug cylinder 5 in a sliding manner in a sealing manner, a micropore 7 is arranged on the side wall of the upper end of the sliding plug cylinder 5, pressing plates 4 are fixedly connected to the lower ends of the two movable rods 6, a baffle plate 8 is fixedly connected to the opposite inner, thereby make activity frame 2 resume to initial position, install the cleaning device who clears up the chalk dust on the housing 1.

Cleaning device has seted up annular chamber 11 including the hose 13 of symmetric connection at 3 lateral walls of gasbag, 1 lateral wall of housing, and hose 13 and annular chamber 11 intercommunication, and a plurality of dust absorption holes 12 with 11 intercommunications of annular chamber are seted up to 1 up end of housing along its circumference equidistant, and the venthole 10 with 3 intercommunications of gasbag is seted up to 1 lower extreme lateral wall of housing, installs the check valve that only allows gas to discharge from 3 interior gasbags in the venthole 10.

When using the blackboard eraser to clear up the writing on the blackboard, the blackboard eraser is pressed hard fast on the blackboard surface, sliding plug section of thick bamboo 5 can follow the quick downstream of movable frame 2 this moment, can extrude the air between movable rod 6 and the sliding plug section of thick bamboo 5, because micropore 7's existence, make micropore 7 be not enough quick with the air discharge between movable rod 6 and the sliding plug section of thick bamboo 5, thereby make sliding plug section of thick bamboo 5 also make movable rod 6 move down in step at the quick in-process that moves down, compress gasbag 3, because the aperture of venthole 10 is greater than the aperture of dust absorption hole 12 far away, when compressing gasbag 3, the interior gas of gasbag 3 can be quick discharges from venthole 10.

Because gasbag 3 itself has deformation recovery ability, after compressing gasbag 3, gasbag 3 can promote movable rod 6 rebound for the air between movable rod 6 and the sliding plug section of thick bamboo 5 of slow extrusion of movable rod 6 is discharged from micropore 7, thereby is wiping the in-process to the blackboard and makes gasbag 3 resume to initial condition gradually, thereby makes gasbag 3 carry out the absorption of continuation through dust absorption hole 12 can be to the chalk dust that housing 1 fluttered all around.

In this embodiment, when wiping the writing on the blackboard, press movable frame 2 to the blackboard surface, make sliding plug section of thick bamboo 5 drive movable rod 6 downstream, thereby make gasbag 3 compressed, the gas of gasbag 3 is spout from venthole 10 department fast, under the deformation recovery ability effect that gasbag 3 itself has, can promote movable rod 6 rebound, make the air between movable rod 6 and the sliding plug section of thick bamboo 5 slowly discharge from micropore 7, thereby make gasbag 3 resume gradually to initial condition, thereby make gasbag 3 clean the in-process at the sponge and carry out the absorption of continuation to the chalk dust that shell 1 wafts all around through dust absorption hole 12.

Example two:

referring to fig. 2, the difference from the first embodiment is that a first annular magnet 14 is embedded in the side wall of the movable frame 2, an annular groove 15 is formed in the inner wall of the annular cavity 11, a second annular magnet 16 attracted to the first annular magnet 14 is slidably connected to the inner wall of the annular groove 15, and an ejector pin 17 located right below the dust collection hole 12 is fixedly connected to the upper end of the second annular magnet 16.

In this embodiment, movable frame 2 moves down and to make first ring magnet 14 move down to drive thimble 17 through second ring magnet 16 and move down, and then absorb the peripheral chalk dust of blackboard eraser, clean the back to the writing on the blackboard, movable frame 2 can resume to the normal position under the effect of spring 9, make first ring magnet 14 drive second ring magnet 16 and move up, thereby drive thimble 17 and insert in dust absorption hole 12, clear up the chalk dust of gathering in the dust absorption hole 12.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A blackboard eraser with a dust self-absorption cleaning function comprises a housing (1) with an opening at the upper end, the inner wall of the housing (1) is connected with a movable frame (2) which is arranged along the vertical direction in a sliding way, a sponge is arranged in the movable frame (2), it is characterized in that the bottom in the housing (1) is fixedly connected with an air bag (3), the lower end of the movable frame (2) is symmetrically and fixedly connected with sliding plug cylinders (5) with downward openings, the sliding plug cylinder (5) is internally connected with movable rods (6) in a sealing and sliding manner, the side wall of the upper end of the sliding plug cylinder (5) is provided with micropores (7), the lower ends of the two movable rods (6) are fixedly connected with a pressing plate (4), inner wall fixedly connected with baffle (8) that housing (1) is relative, activity frame (2) lower extreme passes through spring (9) and baffle (8) upper end elastic connection, install the cleaning device who clears up the chalk dust on housing (1).

2. The blackboard eraser with the function of self-dust-collection cleaning according to claim 1, wherein the cleaning device comprises hoses (13) symmetrically connected to the side walls of the airbags (3), the side walls of the casing (1) are provided with an annular cavity (11), the hoses (13) are communicated with the annular cavity (11), the upper end surface of the casing (1) is provided with a plurality of dust collection holes (12) communicated with the annular cavity (11) at equal intervals along the circumferential direction, the side wall of the lower end of the casing (1) is provided with an air outlet hole (10) communicated with the airbags (3), and a one-way valve only allowing air to be discharged from the airbags (3) is installed in the air outlet hole (10).

3. The blackboard eraser with the function of self dust collection and cleaning according to claim 2, characterized in that a first annular magnet (14) is embedded in the side wall of the movable frame (2), an annular groove (15) is formed in the inner wall of the annular cavity (11), a second annular magnet (16) attracted to the first annular magnet (14) is slidably connected to the inner wall of the annular groove (15), and an ejector pin (17) located right below the dust collection hole (12) is fixedly connected to the upper end of the second annular magnet (16).