CN115923379A - Blackboard eraser capable of reducing dust emission in rotary mode - Google Patents
Blackboard eraser capable of reducing dust emission in rotary mode Download PDFInfo
- Publication number
- CN115923379A CN115923379A CN202211562957.6A CN202211562957A CN115923379A CN 115923379 A CN115923379 A CN 115923379A CN 202211562957 A CN202211562957 A CN 202211562957A CN 115923379 A CN115923379 A CN 115923379A
- Authority
- CN
- China
- Prior art keywords
- wiping
- dust
- blackboard eraser
- bearing
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000428 dust Substances 0.000 title claims abstract description 81
- 239000004744 fabric Substances 0.000 claims description 18
- 238000007790 scraping Methods 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The application discloses blackboard eraser of reducible raise dust of rotation relates to teaching aid technical field. Through the opposite installation of the one-way bearings, the two wiping rollers can only rotate in the opposite direction in a one-way mode, so that dust between the two rollers of the blackboard eraser can be cleaned mutually and is swept into a dust collection bin of the blackboard eraser, raised chalk dust is reduced, and the harm of the chalk dust to the health of teachers and students is reduced as much as possible. The blackboard eraser comprises a shell, wherein a cavity with an upward opening is defined in the shell; the mouth part of the cavity is rotationally connected with two wiping rollers; the two wiping rollers and the lower part of the cavity together form a dust collecting bin; the two wiping rollers are parallel to each other and abutted against each other, and when one of the wiping rollers slides to wipe the blackboard, the other wiping roller rotates inwards to scrape chalk dust on the sliding wiping roller into the dust collection bin. The blackboard eraser is used for improving the performance of the blackboard eraser.
Description
Technical Field
The application relates to the technical field of teaching aids, in particular to a blackboard eraser capable of reducing raised dust in a rotary mode.
Background
At present, most of teaching activities of primary schools, middle schools and colleges are still performed in the form of chalk blackboard writing, a blackboard eraser for erasing a blackboard has to be mentioned when chalk is used for writing, and the existing blackboard eraser has the characteristics of low price, easiness in use and the like, but has a plurality of defects. For example, the excessive dust of chalk caused by erasing the blackboard is easy to affect the health of human body; when the blackboard eraser is used for a period of time, too much chalk dust is attached to the blackboard eraser, so that the blackboard eraser is not clean enough easily; the top of the blackboard is hard to wipe; the back shell of the blackboard eraser is simply adhered to the blackboard eraser body and is easy to damage when falling; after the blackboard eraser is used for a period of time, the cloth for erasing the chalk can come out easily, and the like.
Disclosure of Invention
In order to solve the technical problem, embodiments of the present application provide a rotary blackboard eraser capable of reducing raised dust, so that the raised dust is reduced as much as possible in the process of erasing the blackboard eraser, and the influence of chalk dust on the health of teachers and students is reduced.
In order to achieve the above purpose, an embodiment of the present application provides a rotary blackboard eraser capable of reducing dust emission, including a housing, in which a cavity with an upward opening is defined; the opening part of the cavity is rotationally connected with two wiping rollers; the two wiping rollers and the lower part of the cavity together form a dust collecting bin; the two wiping rollers are parallel to each other and abutted against each other, and when one of the wiping rollers slides to wipe the blackboard, the other wiping roller rotates inwards to scrape chalk dust on the sliding wiping roller into the dust collection bin.
Furthermore, the cavity is a rectangular cavity, the two wiping rollers are respectively connected between the front side wall and the rear side wall of the cavity through a group of one-way bearings, and the two groups of one-way bearings can rotate towards the inner side.
Further, the axial direction of the two wiping rollers is consistent with the length direction of the shell, and the two wiping rollers are arranged side by side along the width direction of the shell.
Further, the one-way bearing comprises a bearing outer ring, a bearing inner ring, a retainer and a bearing roller; the bearing outer ring is fixedly connected to the side wall of the cavity, the bearing inner ring is connected with the wiping roller key, the large end of the bearing roller is embedded into the bearing outer ring, and the small end of the bearing roller is connected with the bearing inner ring and the bearing outer ring in a rolling mode.
Further, the top of the wiping roller is higher than the mouth of the cavity.
Furthermore, a scraper plate capable of scraping chalk dust on the wiping roller into the dust collection bin is arranged in the cavity.
Further, a dust collection bin outlet is formed in the bottom of the shell, and a dust collection bin cover is detachably connected to the dust collection bin outlet.
Further, the wiping roller comprises a wiping roller body and a wiping cloth connected to the outer side face of the wiping roller body.
Furthermore, the wiping cloth is sleeved on the wiping roller body.
Furthermore, the wiping cloth is cotton cloth.
Compared with the prior art, the application has the following beneficial effects:
1. the blackboard eraser of reducible raise dust of rotation, through set up two wiping rollers in the casing, and two wiping rollers all connect on the casing through inside pivoted one-way bearing, thereby realize when wiping the blackboard, one-way bearing makes the wiping roller who is close to direction of motion one side rotate, the relative rotation does not take place for the wiping roller of opposite side, thereby make relatively static wiping roller can clean the blackboard of process, pivoted wiping roller can sweep relatively static wiping roller simultaneously, make the chalk dust that glues on relatively static wiping roller enter into in the dust collecting bin. From this, compare ordinary blackboard eraser, this application blackboard eraser clean effect of wiping is better, also laborsaving, environmental protection more.
2. The blackboard eraser is characterized in that the scraping plate is arranged in the cavity, and chalk dust on the wiping roller is scraped for the second time, so that the wiping effect of the blackboard eraser can be further improved.
3. The dust collecting bin cover is detachably connected to the outlet of the dust collecting bin in the embodiment of the application, so that the dust collecting bin cover can be detached when too much chalk dust exists in the dust collecting bin, and the chalk dust in the bin can be cleaned in time.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a rotary blackboard eraser according to an embodiment of the present disclosure;
FIG. 2 is a cross-sectional view of a rotary dust-reducing blackboard eraser according to an embodiment of the present application (two wiping rollers are removed and only bearings are reserved);
FIG. 3 is a schematic structural diagram of a rotary dust-reducing blackboard eraser according to an embodiment of the present invention, shown in FIG. 2 (in which a wiping roller is removed of a wiping cloth);
FIG. 4 is a schematic view of a connecting structure between a housing and a bearing in a rotary blackboard eraser for reducing dust emission according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of a wiping roller in a blackboard eraser with a revolving type capable of reducing dust emission according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Referring to fig. 1 to 4, an embodiment of the present application provides a rotary blackboard eraser capable of reducing dust emission, which includes a housing 1, two wiping rollers 2, two sets of one-way bearings 3, and a dust chamber cover 4.
The casing 1 is cubic, and a cavity which is communicated up and down is defined in the casing. The cavity is a rectangular cavity, and the upper port of the cavity is rotatably connected with the two wiping rollers 2. The top of the wiping roller 2 is higher than the mouth of the cavity. The lower port part of the cavity (namely the outlet of the dust collection bin) is detachably connected with the dust collection bin cover 5, for example, clamped. The two wiping rollers 2, the lower part of the cavity and the dust collecting bin cover 5 together form a dust collecting bin 6. Therefore, the dust removal effect is improved, and when too much chalk dust exists in the dust collection bin 6, the dust collection bin cover 5 can be detached to timely clean the chalk dust in the bin.
The two wiping rollers 2 are arranged side by side in the width direction of the casing 1 so as to abut against each other with their axial directions aligned with the longitudinal direction of the casing 1. Two wiping rollers 2 are connected between the front side wall and the rear side wall of the cavity through a set of one-way bearings 3 respectively, and the two sets of one-way bearings can rotate towards the inner side. Namely, the one-way bearing on the left side rotates in the counterclockwise direction, and the one-way bearing on the right side rotates in the clockwise direction. Thus, when the wiping roller 2 on the side closer to the moving direction wipes the blackboard by sliding, the other wiping roller 2 rotates inward (from bottom to top) to scrape the chalk dust on the sliding wiping roller 2 into the dust collecting chamber 6.
Referring to fig. 5, the wiping roller 2 includes a wiping roller body 21 and a wiping cloth 22 attached to an outer side surface of the wiping roller body 21. Specifically, the wipes 4 are mounted in a sleeve and do not rotate relative to each other, thereby facilitating replacement of the wipes 22 at a later wear drain. The wiping cloth 22 is a cotton cloth. Therefore, the chalk dust is convenient to adsorb and remove.
Referring to fig. 4, the one-way bearing 3 includes a bearing outer race 31, a bearing inner race 32, a cage 33, and bearing rollers 34. Wherein, the bearing outer ring 31 is fixedly connected on the inner wall of the shell 1, and the bearing inner ring 32 is connected with the wiping roller 2 key. That is, the end of the wiping roller 2 is provided with a first key groove 211, the bearing inner ring 32 is provided with a second key groove 321, and a flat key (not shown) is fitted into the first key groove 211 and the second key groove 321 to connect the wiping roller 2 to the bearing inner ring 32. The bearing rollers 34 have their large ends embedded in the bearing outer race 31 and their small ends in rolling contact with the bearing inner race 32 and the bearing outer race 31. Thereby, the bearing rollers 34 can be prevented from falling off during the operation of the one-way bearing 3. In addition, since the one-way bearing 3 needs to operate in a rotating manner during operation, it is required that the bearing inner parts are machined to a small roughness and a lubricating material can be appropriately added.
Referring to fig. 2, two scraping plates 7 capable of scraping chalk dust on the corresponding wiping roller 2 into the dust collection bin 6 are arranged in the cavity. Specifically, the two scrapers 7 are respectively located below the corresponding wiping rollers 2 and are symmetrically arranged, one end of each of the two scrapers 7 is fixedly connected to the inner wall of the cavity, and the other end of each of the two scrapers 7 can press the wiping cloth 22 (the wiping roller body 21 and the wiping cloth 22 are not shown in fig. 2) on the corresponding wiping roller 2 and scrape chalk dust on the wiping cloth. Specifically, the scraper 7 may be provided with a wedge surface 71 to improve the scraping effect.
The working principle of the embodiment of the application is as follows:
when the blackboard is wiped, the housing 1 is held by hand, the two wiping rollers 2 are in a vertical state, and the wiping roller 2 moves rightward to wipe the blackboard, and when the wiping roller 2 moves rightward, the wiping roller 2 positioned on the left side (the visual angle of a wiper) cannot rotate due to the obstruction of the one-way bearing 3 (hereinafter referred to as a fixed roller), so that chalk dust on the blackboard is wiped. At the same time, the right wiping roller 2 makes a clockwise rotation (hereinafter referred to as a rotating roller). The wiping cloth on the rotating roller can sweep a part of chalk dust adhered to the wiping cloth on the fixed roller into the dust collection bin 6. After the wiping direction is changed, the fixed roller is changed into the rotary roller, chalk dust on the fixed roller can be scraped off by the wiping roller changed into the fixed roller, and meanwhile, due to the fact that the scraper 7 is arranged below the rotary roller, the scraper 7 can scrape the residual chalk dust stuck on the rotary roller into the dust collection bin 6. Since the two sets of one-way bearings 3 are installed to face each other, the wiping roller 2 rotates in opposite directions when wiping is performed in both the right and left directions, and thus, the wiping direction is not considered, and the right and left directions are possible. When too much chalk dust exists in the dust collection bin 6, the dust collection bin cover 5 can be detached, and the chalk dust in the bin can be cleaned in time.
The above is only an embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A rotary blackboard eraser capable of reducing dust raising is characterized by comprising a shell, wherein a cavity with an upward opening is defined in the shell; the mouth part of the cavity is rotationally connected with two wiping rollers; the two wiping rollers and the lower part of the cavity together form a dust collecting bin; the two wiping rollers are parallel to each other and abutted against each other, and when one of the wiping rollers slides to wipe the blackboard, the other wiping roller rotates inwards to scrape chalk dust on the sliding wiping roller into the dust collection bin.
2. The rotary blackboard eraser capable of reducing dust emission according to claim 1, wherein the chamber is a rectangular chamber, the two wiping rollers are respectively connected between the front side wall and the rear side wall of the chamber through a set of one-way bearings, and both sets of one-way bearings can rotate towards the inner side.
3. The rotary blackboard eraser capable of reducing dust emission according to claim 2, wherein the two wiping rollers are axially aligned with the length direction of the casing and arranged side by side along the width direction of the casing.
4. The rotary blackboard eraser capable of reducing dust emission according to claim 2, wherein the one-way bearing comprises a bearing outer ring, a bearing inner ring, a retainer and a bearing roller; the bearing outer ring is fixedly connected to the side wall of the shell, the bearing inner ring is connected with the wiping roller key, the large end of the bearing roller is embedded into the bearing outer ring, the gap between the bearing inner ring and the bearing outer ring is smaller than the diameter of the large end of the bearing roller, and the small end of the bearing inner ring is connected with the bearing outer ring in a rolling mode.
5. The rotary dust-reducing blackboard eraser according to claim 1, wherein the top of the wiping roller is higher than the mouth of the cavity.
6. The rotary type blackboard eraser capable of reducing flying dust according to claim 1, wherein a scraper capable of scraping chalk dust on the wiping roller into the dust collection bin is arranged in the cavity.
7. The rotary blackboard eraser capable of reducing raised dust according to claim 1, wherein the bottom of the housing is provided with a dust collecting bin outlet, and the dust collecting bin outlet is detachably connected with a dust collecting bin cover.
8. The rotary type blackboard eraser capable of reducing flying dust according to claim 1, wherein the wiping roller comprises a wiping roller body and a wiping cloth attached to the outer side surface of the wiping roller body.
9. The rotary blackboard eraser capable of reducing dust emission according to claim 8, wherein the wiping cloth is sleeved on the wiping roller body.
10. The rotary blackboard eraser capable of reducing dust emission according to claim 8, wherein the wiping cloth is cotton cloth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211562957.6A CN115923379A (en) | 2022-12-07 | 2022-12-07 | Blackboard eraser capable of reducing dust emission in rotary mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211562957.6A CN115923379A (en) | 2022-12-07 | 2022-12-07 | Blackboard eraser capable of reducing dust emission in rotary mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115923379A true CN115923379A (en) | 2023-04-07 |
Family
ID=86650466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211562957.6A Pending CN115923379A (en) | 2022-12-07 | 2022-12-07 | Blackboard eraser capable of reducing dust emission in rotary mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115923379A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941225A (en) * | 1989-11-13 | 1990-07-17 | Liao Su Land | Automatic chalk-powder collecting device for blackboard eraser |
| CN2090333U (en) * | 1991-04-22 | 1991-12-11 | 张桂信 | Dust-collecting blackboard eraser |
| CN2132632Y (en) * | 1992-09-28 | 1993-05-12 | 山立 | Rolling no-dust eraser |
| CN2383700Y (en) * | 1999-07-26 | 2000-06-21 | 胡晓平 | Rolling blackboard erazer |
| CN102016335A (en) * | 2008-05-08 | 2011-04-13 | Ntn株式会社 | Retainer for roller bearing, roller bearing, and method of manufacturing retainer for roller bearing |
| CN211641638U (en) * | 2019-12-25 | 2020-10-09 | 武汉科技大学 | Dust-absorbing blackboard eraser |
| CN212377103U (en) * | 2019-12-18 | 2021-01-19 | 芜湖之优轴承有限公司 | One-way rotor bearing |
| CN114233771A (en) * | 2021-11-26 | 2022-03-25 | 人本股份有限公司 | One-way bearing capable of changing stopping direction |
-
2022
- 2022-12-07 CN CN202211562957.6A patent/CN115923379A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4941225A (en) * | 1989-11-13 | 1990-07-17 | Liao Su Land | Automatic chalk-powder collecting device for blackboard eraser |
| CN2090333U (en) * | 1991-04-22 | 1991-12-11 | 张桂信 | Dust-collecting blackboard eraser |
| CN2132632Y (en) * | 1992-09-28 | 1993-05-12 | 山立 | Rolling no-dust eraser |
| CN2383700Y (en) * | 1999-07-26 | 2000-06-21 | 胡晓平 | Rolling blackboard erazer |
| CN102016335A (en) * | 2008-05-08 | 2011-04-13 | Ntn株式会社 | Retainer for roller bearing, roller bearing, and method of manufacturing retainer for roller bearing |
| CN212377103U (en) * | 2019-12-18 | 2021-01-19 | 芜湖之优轴承有限公司 | One-way rotor bearing |
| CN211641638U (en) * | 2019-12-25 | 2020-10-09 | 武汉科技大学 | Dust-absorbing blackboard eraser |
| CN114233771A (en) * | 2021-11-26 | 2022-03-25 | 人本股份有限公司 | One-way bearing capable of changing stopping direction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210526119U (en) | Teaching aid for information and computer science | |
| CN108437667A (en) | A kind of multifunctional blackboard eraser dust-extraction unit | |
| CN115923379A (en) | Blackboard eraser capable of reducing dust emission in rotary mode | |
| CN109080348A (en) | A kind of blackboard scrape along blackboard eraser cleaning plant | |
| CN211892659U (en) | Blackboard eraser | |
| CN214775079U (en) | Automatic dust collecting blackboard eraser | |
| CN211641638U (en) | Dust-absorbing blackboard eraser | |
| CN211592017U (en) | Dustless blackboard eraser | |
| CN109700388A (en) | A kind of sweeper roller frame | |
| JP3119290U (en) | Hygiene blackboard eraser | |
| CN201102424Y (en) | Two-sided alternation dust-removing blackboard eraser | |
| CN209022652U (en) | A kind of blackboard with cleaning blackboard eraser | |
| CN209712770U (en) | A kind of sweeper roller frame | |
| CN209534593U (en) | Blackboard eraser | |
| CN205413688U (en) | Blackboard eraser clearance ware | |
| CN209479293U (en) | A kind of eraser with means for absorbing chalk dust | |
| CN201099110Y (en) | Dust-proof highly effective blackboard eraser | |
| CN216101207U (en) | AI education learning equipment is used in chinese education classroom | |
| CN210821569U (en) | Portable electric dustless blackboard eraser | |
| CN219007457U (en) | Automatic device of blackboard dust is inhaled | |
| CN215204238U (en) | Non-electric automatic circulating dust-removing and dust-depositing environment-friendly blackboard eraser | |
| CN214647162U (en) | Multifunctional blackboard | |
| CN218140804U (en) | Automatic cleaning blackboard | |
| CN220374165U (en) | Self-cleaning blackboard eraser | |
| CN217048070U (en) | Teaching is with teaching board that has clearance function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |