CN104118254A - Dust-free chalk eraser - Google Patents
Dust-free chalk eraser Download PDFInfo
- Publication number
- CN104118254A CN104118254A CN201310145815.4A CN201310145815A CN104118254A CN 104118254 A CN104118254 A CN 104118254A CN 201310145815 A CN201310145815 A CN 201310145815A CN 104118254 A CN104118254 A CN 104118254A
- Authority
- CN
- China
- Prior art keywords
- cavity
- dust
- eraser
- water
- handle
- 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
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- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
The invention discloses a dust-free chalk eraser which comprises a casing and a handle. The casing is provided with a cavity, a press plate and water absorption sponge are arranged in the cavity, the water absorption sponge is arranged between the press plate and the lower end of the cavity, one side of the cavity is provided with a water inlet, a plurality of through holes are formed in the lower end of the cavity, a plurality of rolling felts are arranged at the lower end corresponding to the casing, and a push rod is arranged at the upper end of the casing, extends into the cavity and is connected with the press plate. The built-in water absorption sponge is adopted for the dust-free chalk eraser, and water is slowly extruded out in the wiping process, so that a wiping head is wet and no chalk dust is produced when a blackboard is wiped, clothes of teachers and students are prevented from being stained, air pollution is reduced, and the dust-free chalk eraser is good for health. By arranging the handle, the students can wipe the top of a high blackboard and do not need to stand on a stool, and safety accidents are avoided.
Description
Technical field
The present invention relates to a kind of classroom articles for use, particularly a kind of eraser with means for absorbing chalk dust for blackboard.
Background technology
Chalkboard eraser is the instrument for wiping chalk writing, also be blackboard eraser, when at present teacher imparts knowledge to students on classroom or more employing chalk-writing, then carry out wiping, a lot of dusts of can kicking up when using chalkboard eraser wiping with chalkboard eraser, these dusts can disperse in face of front-seat student, make dirty student and teacher's clothes and desk, affect students and listen to the teacher, and can cause air pollution, more serious words can affect the healthy of student and teacher, but this situation can not get improving always.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of chalk dust that can not produce in wiping process, reduce air pollution, be conducive to healthy eraser with means for absorbing chalk dust.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of eraser with means for absorbing chalk dust, comprise housing and handle, in described housing, be provided with cavity, in cavity, be provided with pressing plate and water-absorbing sponge, described water-absorbing sponge is located between pressing plate and the lower end of cavity, and a side of cavity is provided with water inlet, the lower end of cavity is provided with some through holes, the lower end of corresponding housing is provided with some felts that roll, and the upper end of described housing is provided with a push rod, and described push rod stretches into cavity and connects pressing plate.
As a further improvement on the present invention, one end of described handle is fixedly connected with housing upper end by screw, and the other end of described handle is hand-held pole.
As a further improvement on the present invention, described water inlet is provided with seal cover.
The invention has the beneficial effects as follows: the present invention adopts built-in water-absorbing sponge, in the process of wiping, by slowly basis of moisture content, in the time of blackboard-cleaning, can not produce chalk dust because rubbing head is moistening like this, avoid academics and students's clothes to make dirty, reduce air pollution, be conducive to healthy, arranging of handle can allow student clip higher blackboard top, and needn't stand on stool, avoided the generation of security incident.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
In figure, indicate: 1-housing; 2-handle; 3-cavity; 4-pressing plate; 5-water-absorbing sponge; 6-water inlet; 7-through hole; 8-rolls felt; 9-push rod; 10-seal cover.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Fig. 1 shows a kind of embodiment of a kind of eraser with means for absorbing chalk dust of the present invention, comprise housing 1 and handle 2, in described housing 1, be provided with cavity 3, in cavity 3, be provided with pressing plate 4 and water-absorbing sponge 5, described water-absorbing sponge 5 is located between pressing plate 4 and the lower end of cavity 3, one side of cavity 3 is provided with water inlet 6, the lower end of cavity 3 is provided with some through holes 7, the lower end of corresponding housing 1 is provided with some felts 8 that roll, the upper end of described housing 1 is provided with a push rod 9, described push rod 9 stretches into cavity 3 and connects pressing plate 4, one end of described handle 2 is fixedly connected with housing 1 upper end by screw, and the other end of described handle 2 is hand-held pole, described water inlet 6 is provided with seal cover 10.
When use, open the seal cover 10 on water inlet 6, in cavity 3, pour into clean water, again cover seal cover 10, when wiping, roll on blackboard with rolling felt 8, squeeze gently push rod 9, pressing plate 4 compresses water-absorbing sponge 5 under push rod 9 effects, and water is slowly extruded from through hole 7, just can not produce like this dust in the process of wiping.
Claims (3)
1. an eraser with means for absorbing chalk dust, comprise housing (1) and handle (2), it is characterized in that: in described housing (1), be provided with cavity (3), in cavity (3), be provided with pressing plate (4) and water-absorbing sponge (5), described water-absorbing sponge (5) is located between pressing plate (4) and the lower end of cavity (3), one side of cavity (3) is provided with water inlet (6), the lower end of cavity (3) is provided with some through holes (7), the lower end of corresponding housing (1) is provided with some felts (8) that roll, the upper end of described housing (1) is provided with a push rod (9), described push rod (9) stretches into cavity (3) and connects pressing plate (4).
2. eraser with means for absorbing chalk dust according to claim 1, is characterized in that: one end of described handle (2) is fixedly connected with housing (1) upper end by screw, and the other end of described handle (2) is hand-held pole.
3. eraser with means for absorbing chalk dust according to claim 1, is characterized in that: described water inlet (6) is provided with seal cover (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145815.4A CN104118254A (en) | 2013-04-25 | 2013-04-25 | Dust-free chalk eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310145815.4A CN104118254A (en) | 2013-04-25 | 2013-04-25 | Dust-free chalk eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104118254A true CN104118254A (en) | 2014-10-29 |
Family
ID=51763990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310145815.4A Pending CN104118254A (en) | 2013-04-25 | 2013-04-25 | Dust-free chalk eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104118254A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437837A (en) * | 2015-12-15 | 2016-03-30 | 费春霞 | Dust-free blackboard eraser with cleaning function |
| CN106313985A (en) * | 2016-09-14 | 2017-01-11 | 张英俊 | Dust-free blackboard eraser |
| CN108339336A (en) * | 2018-04-23 | 2018-07-31 | 嘉兴宝仕龙集成家居有限公司 | A kind of multifunctional electric appliance may filter that sterilization |
-
2013
- 2013-04-25 CN CN201310145815.4A patent/CN104118254A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437837A (en) * | 2015-12-15 | 2016-03-30 | 费春霞 | Dust-free blackboard eraser with cleaning function |
| CN106313985A (en) * | 2016-09-14 | 2017-01-11 | 张英俊 | Dust-free blackboard eraser |
| CN108339336A (en) * | 2018-04-23 | 2018-07-31 | 嘉兴宝仕龙集成家居有限公司 | A kind of multifunctional electric appliance may filter that sterilization |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141029 |