CN204622950U - A kind of blackboard eraser with screw rod - Google Patents
A kind of blackboard eraser with screw rod Download PDFInfo
- Publication number
- CN204622950U CN204622950U CN201520301093.1U CN201520301093U CN204622950U CN 204622950 U CN204622950 U CN 204622950U CN 201520301093 U CN201520301093 U CN 201520301093U CN 204622950 U CN204622950 U CN 204622950U
- Authority
- CN
- China
- Prior art keywords
- expansion link
- bristle
- cuboid
- spherical
- 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.)
- Expired - Fee Related
Links
Abstract
A kind of blackboard eraser with screw rod of the utility model, comprise sassafras plate, bristle A, bristle B, first expansion link, second expansion link, handle, it is characterized in that: described sassafras plate is the cuboid that a kind of rubber makes, some cylindrical bristle A are respectively arranged with in the upper end of sassafras plate and side, bristle B, the sponge of cuboid is provided with in the lower end of sassafras plate, the groove of spherical is provided with in the centre position, lower end of sassafras plate, the turning cylinder of spherical is provided with inside groove, the lower end of turning cylinder is provided with the first expansion link, the second expansion link is provided with inside the first expansion link, the handle of cuboid is provided with in the lower end of the second expansion link, the anti-slip veins of some spherical is had in the arranged outside of handle.The beneficial effects of the utility model are: can cleaner by blackboard eraser, and prevent chalk dust around from wafing, convenient shorter people clips blackboard eminence.
Description
Technical field
The utility model relates to a kind of blackboard eraser, specifically, relates to a kind of blackboard eraser with screw rod.
Background technology
Traditional blackboard eraser, blackboard eraser of blacking clean, and also when erasing the board, chalk dust can fly upward everywhere, contaminated environment, and too much chalk dust can affect the healthy of academics and students; Due to the difference of height, short classmate insufficient height when erasing the board, high place wipe less than, must jump up and wipe or take stool and wipe, very inconvenient, simultaneously also dangerous, blackboard eraser, owing to not having the set-point fixed, sometimes will look for blackboard eraser everywhere.
The shortcoming of prior art is: chalk dust descends slowly and lightly everywhere, and contaminated air affects health, the eminence that erases the board inconvenience, is not easy to place.
Utility model content
When the purpose of this utility model is to provide one can prevent from erasing the board, chalk dust waves everywhere, and can clip a kind of blackboard eraser with screw rod of blackboard eminence.
For achieving the above object, the technical scheme that the utility model is taked is as follows: a kind of blackboard eraser with screw rod, comprise sassafras plate, bristle A, bristle B, first expansion link, second expansion link, handle, it is characterized in that: described sassafras plate is the cuboid that a kind of rubber makes, some cylindrical bristle A are respectively arranged with in the upper end of sassafras plate and side, bristle B, the sponge of cuboid is provided with in the lower end of sassafras plate, the groove of spherical is provided with in the centre position, lower end of sassafras plate, the turning cylinder of spherical is provided with inside groove, the lower end of turning cylinder is provided with the first expansion link, the second expansion link is provided with inside the first expansion link, the handle of cuboid is provided with in the lower end of the second expansion link, the anti-slip veins of some spherical is had in the arranged outside of handle.
Described first expansion link is the female cylinder steel pipe of a kind of band;
Described second expansion link is a kind of with externally threaded cylinder steel pipe, and the second expansion link is by screw thread retractable or stretch out in the first expansion link.
The beneficial effects of the utility model are: in use, sponge is allowed to inhale some moisture, utilize bristle A, bristle B erases the board, floating chalk dust can stick on moistening sponge, if when needing to extend, stretched by screw thread by rotating the second expansion link inside the first expansion link, carry out extending, the utility model can cleaner by blackboard eraser, and prevent chalk dust around from wafing, convenient shorter people clips blackboard eminence.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1: the technical scheme that the utility model is taked is as follows: a kind of blackboard eraser with screw rod, comprise sassafras plate (1), bristle A (2), bristle B (3), first expansion link (4), second expansion link (5), handle (6), it is characterized in that: the cuboid that described sassafras plate (1) makes for a kind of rubber, some cylindrical bristle A (2) are respectively arranged with in the upper end of sassafras plate (1) and side, bristle B (3), the sponge (7) of cuboid is provided with in the lower end of sassafras plate (1), the groove (8) of spherical is provided with in the centre position, lower end of sassafras plate (1), the turning cylinder (9) of spherical is provided with in groove (8) the inside, the lower end of turning cylinder (9) is provided with the first expansion link (4), first expansion link (4) the inside is provided with the second expansion link (5), the handle (6) of cuboid is provided with in the lower end of the second expansion link (5), the anti-slip veins (10) of some spherical is had in the arranged outside of handle (6).
Described first expansion link (4) is the female cylinder steel pipe of a kind of band;
Described second expansion link (5) is a kind of with externally threaded cylinder steel pipe, and the second expansion link (5) is by screw thread retractable or stretch out in the first expansion link (4).
The beneficial effects of the utility model are: in use, sponge (7) is allowed to inhale some moisture, utilize bristle A (2), bristle B (3) erases the board, floating chalk dust can stick on moistening sponge (7), if when needing to extend, stretched from the first expansion link (4) the inside by screw thread by rotating the second expansion link (5), carry out extending, the utility model can cleaner by blackboard eraser, prevent chalk dust around from wafing, convenient shorter people clips blackboard eminence.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (1)
1. the blackboard eraser with screw rod, comprise sassafras plate (1), bristle A (2), bristle B (3), first expansion link (4), second expansion link (5), handle (6), it is characterized in that: the cuboid that described sassafras plate (1) makes for a kind of rubber, some cylindrical bristle A (2) are respectively arranged with in the upper end of sassafras plate (1) and side, bristle B (3), the sponge (7) of cuboid is provided with in the lower end of sassafras plate (1), the groove (8) of spherical is provided with in the centre position, lower end of sassafras plate (1), the turning cylinder (9) of spherical is provided with in groove (8) the inside, the lower end of turning cylinder (9) is provided with the first expansion link (4), first expansion link (4) the inside is provided with the second expansion link (5), the handle (6) of cuboid is provided with in the lower end of the second expansion link (5), the anti-slip veins (10) of some spherical is had in the arranged outside of handle (6),
Described first expansion link (4) is the female cylinder steel pipe of a kind of band;
Described second expansion link (5) is a kind of with externally threaded cylinder steel pipe, and the second expansion link (5) is by screw thread retractable or stretch out in the first expansion link (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301093.1U CN204622950U (en) | 2015-05-11 | 2015-05-11 | A kind of blackboard eraser with screw rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520301093.1U CN204622950U (en) | 2015-05-11 | 2015-05-11 | A kind of blackboard eraser with screw rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204622950U true CN204622950U (en) | 2015-09-09 |
Family
ID=54042008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520301093.1U Expired - Fee Related CN204622950U (en) | 2015-05-11 | 2015-05-11 | A kind of blackboard eraser with screw rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204622950U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597754A (en) * | 2017-08-31 | 2018-01-19 | 安徽大地环保科技有限公司 | A kind of cleaning head mechanism of inner-walls of duct cleaning |
-
2015
- 2015-05-11 CN CN201520301093.1U patent/CN204622950U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107597754A (en) * | 2017-08-31 | 2018-01-19 | 安徽大地环保科技有限公司 | A kind of cleaning head mechanism of inner-walls of duct cleaning |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150909 Termination date: 20160511 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |