CN2347786Y - Eraser with means for absorbing chalk dust - Google Patents
Eraser with means for absorbing chalk dust Download PDFInfo
- Publication number
- CN2347786Y CN2347786Y CN 97211848 CN97211848U CN2347786Y CN 2347786 Y CN2347786 Y CN 2347786Y CN 97211848 CN97211848 CN 97211848 CN 97211848 U CN97211848 U CN 97211848U CN 2347786 Y CN2347786 Y CN 2347786Y
- Authority
- CN
- China
- Prior art keywords
- hairbrush
- panel
- brush
- blackboard
- rotating shaft
- 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
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- Brushes (AREA)
Abstract
The utility model relates to a blackboard brush, comprising a panel, a main brush, a side brush, a screw rotary shaft which is stung with a spring, a dust receiving box, a handle and a clamping spring. The handle is held by a hand so that the blackboard brush is clockwise or anticlockwise rotated slowly on the blackboard surface, chalk handwriting is erased by the main brush, chalk dust is swept in stereo body cavities formed by the side brush and the main brush and the panel by the side brush which closely follows the chalk dust, and the chalk dust is slid in the dust receiving box from the opening point of the bottom end of the blackboard brush under the action of gravity. The blackboard brush is horizontally placed by a blocking nail of a wall when the utility model is not used.
Description
The utility model is a kind of length and the blackboard brush of hollow, the laborsaving chalk ash pollution classroom that prevents.
At present the blackboard brush that uses is little because of height, inner do not have dredge passage, so hard especially during use, also can't reach sometimes.More embarrassed is that chalk dust directly is sprinkled into aerial or ground, and teachers and students' health in serious harm, and result of use is also very undesirable.
The purpose of this utility model is to provide an end can be fixed on the following wall in blackboard lower edge and can be the blackboard brush that covering of the fan rotates on blackboard, and it is convenient, laborsaving that handle position is hanged down when using.
Another purpose of the present utility model is to provide the blackboard brush of establishing ＂ Jiong ＂ shape column cavity in a kind of.Chalk dust can be swept to collect in the cavity and also be entered in the ash accepting box from passage immediately, and chalk dust is adorned.Thoroughly controlled chalk dust, protection teachers and students health.
The utility model is an aspirating blackboard brush, comprises panel, the limit hairbrush, and main hairbrush is installed with the screw of spring, handle, ash accepting box and retaining nail; Described panel is a plank that is carved with the hole, and the plate face is brushed with pitch-dark; Described rotating shaft is that an end is a setscrew, is fixed in the wall, and an other end passes panel changes the hole, and overlaps a jump ring, described limit hairbrush, and by two long one short compositions, nail surrounds ＂ Jiong ＂ shape on three edges of panel; Described main hairbrush by several hairbrush near being connected on ＂ Jiong ＂ shape central authorities; The described screw that is installed with spring is used for main hairbrush is fixed on the panel, and spring is between main hairbrush and panel; Described ash accepting box nail is a peviform, bottom opening below rotating shaft; Described handle is contained in the panel middle part, and is curved, can hold; Described retaining nail, nail is below the blackboard lower edge, to keep flat by blackboard brush.
Convenient, laborsaving when the utility model uses, save time extinction classroom dust pollution.
Below in conjunction with accompanying drawing, describe the embodiment of utility model in detail.
Description of drawings:
1, described panel, surface brush is coated with lacquer with dirty oil, and specification is (110 * 11 * 1.5cm
3), the handle of an arc is housed above, the position is with the decision of user's height, and an end is carved with a bigger commentaries on classics hole, is carved with several apertures on the plate in addition, uses for fixing main hairbrush.
2, described limit hairbrush is by two (108 * 2cm
2) and (a 11 * 2cm
2) be implanted with soft and dense palm fiber brush and form, nail surrounds a ＂ Jiong ＂ shape in the panel one side, and short to cover panel suitable for reading, seals the Ji, both sides for long two, and the effect of sweeping the collection chalk dust is arranged.
3, described main hairbrush is right after on panel in turn by four fritter hairbrush, with two Jis limit hairbrush and panel certain distance is arranged all, and the fritter hairbrush is also conveniently replaced.
4, the described screw that is installed with spring (∮=4mm), in order to main hairbrush is fixed on the panel, and partly being installed with the bigger spring of the coefficient of stiffiness between panel and the main hairbrush promptly forms than large space, help the usefulness that chalk dust is hidden oneself, main hairbrush is closely contacted with blackboard, strengthen effect.
5, described rotating shaft, an end are setscrew, and to be fixed on the wall, the other end can pass panel changes the hole, change in the hole being lined with iron ring, and outer rim is overlapped a jump ring, blackboard brush is more stably rotated on blackboard surface, and can reduce wear.
6, described ash accepting box is a peviform, and an aperture is arranged at the bottom, and is adjacent below rotating shaft, rotates with not overslaugh blackboard brush and exceeds.After chalk dust fills with, can pull out stopper, emit from aperture.
7, described retaining nail, with rotating shaft on same horizontal line, from rotating shaft 70cm, in order to stop blackboard brush, just as wiper.
Claims (3)
1, a kind of teaching equipment blackboard brush, comprise panel, the limit hairbrush, main hairbrush, handle, be installed with the screw of spring, fixed rotating shaft and dirt-collecting box, the described panel of retaining nail is that surperficial japanning is drilled with aperture and there is a plank than macropore the lower end, and the described screw that is installed with spring is used for fixing main hairbrush, described fixed rotating shaft, be installed with a jump ring in commentaries on classics outer, hole, described limit hairbrush is made up of two long and narrow hairbrush that are implanted with dense and soft palm fiber and a very short hairbrush, surrounds a ＂ Jiong ＂ shape on panel; Described main hairbrush is fixed on the panel in turn by the screw that four quilts are installed with spring, forms two slits with the limit hairbrush, forms a cuboid space with panel; Described rotating shaft one end is fixed on following five centimeters of blackboard lower limb, and the other end passes panel changes the hole, overlaps a jump ring; Described handle, to be fixed on the panel middle part upper and lower because of student's sub-height, is an arc; Described ash accepting box is that the upper end is uncovered, and the porose box-like box of jumping a queue of going to the bottom near rotating shaft, is characterized in that: described limit hairbrush is near main hairbrush, and can keep off chalk dust in brush inside in the middle of main hairbrush is trapped among,
2, blackboard brush as claimed in claim 1 is characterized in that described ash accepting box, and the upper end is uncovered, rotates with not overslaugh blackboard brush near rotating shaft as far as possible and exceeds.
3, blackboard brush as claimed in claim 1 is characterized in that described main hairbrush is made up of four fritters, can change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97211848 CN2347786Y (en) | 1997-03-02 | 1997-03-02 | Eraser with means for absorbing chalk dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97211848 CN2347786Y (en) | 1997-03-02 | 1997-03-02 | Eraser with means for absorbing chalk dust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2347786Y true CN2347786Y (en) | 1999-11-10 |
Family
ID=33930225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97211848 Expired - Fee Related CN2347786Y (en) | 1997-03-02 | 1997-03-02 | Eraser with means for absorbing chalk dust |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2347786Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017071A (en) * | 2018-08-06 | 2018-12-18 | 张欣欣 | A kind of dust-proof teaching blackboard |
-
1997
- 1997-03-02 CN CN 97211848 patent/CN2347786Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017071A (en) * | 2018-08-06 | 2018-12-18 | 张欣欣 | A kind of dust-proof teaching blackboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |