CN201350776Y - Roller shaft blackboard eraser device - Google Patents
Roller shaft blackboard eraser device Download PDFInfo
- Publication number
- CN201350776Y CN201350776Y CNU2008202086806U CN200820208680U CN201350776Y CN 201350776 Y CN201350776 Y CN 201350776Y CN U2008202086806 U CNU2008202086806 U CN U2008202086806U CN 200820208680 U CN200820208680 U CN 200820208680U CN 201350776 Y CN201350776 Y CN 201350776Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- roller shaft
- roller bearing
- blackboard eraser
- eraser
- 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
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Abstract
The utility model relates to a roller shaft blackboard eraser device, which comprises a tight spring, a connection part, a loosen spring, a towing belt, a wind chest, a small box, a handle and an eraser roller shaft, wherein the eraser roller shaft is transversely arranged on the plane of a blackboard through the connection part, and the eraser roller shaft can move from up to bottom along the podetiums at both sides of the blackboard by pulling the handle in front of the blackboard; the tight and the loosen springs which are arranged on the podetiums at both sides of the blackboard can respectively provide force for the eraser roller shaft to return upwards and downwards; the wind chest which is arranged above the eraser roller shaft can simultaneously absorb the chalk dust into the small box through the up-down movement of the eraser roller shaft. The roller shaft blackboard eraser device is convenient to use, and not only can easily eraser the handwriting on the blackboard, but also can collect the chalk dust so as to prevent the flying of the chalk dust and to reduce the environmental pollution in the classroom, thereby protecting the health of the teachers and students.
Description
Technical field
The utility model relates to a kind of roller type blackboard cleaning device.
Background technology
Erasing the board, everyone should do, and effort is not said, not only eats chalk dust but also hand and clothes are made dirty, allowed the people be very much annoyed.So people just finish this work at a kind of automatic blackboard cleaning device of design.Yet existing on the market a lot of automatic blackboard cleaning devices all have its technical limitation, for example use that inconvenience, dust are existed everywhere etc., thereby can not get using widely.A kind ofly can easily blackboard eraser totally can be absorbed the blackboard cleaning device that chalk dust prevents that dust from existing everywhere again if can design, just erasing the board so, the no one has had a headache.
The utility model content
Technical problem to be solved in the utility model provides a kind of roller type blackboard cleaning device, to address the above problem.
In order to achieve the above object, the utility model is realized by the following technical solutions:
A kind of roller type blackboard cleaning device comprises a tight spring, a junction spare, a loose spring, a traction belt, bellows, a capsule, a leader and a blackboard eraser roller bearing.Described blackboard eraser roller bearing is horizontally set on the blackboard plane by attaching parts, by the handle that spurs blackboard the place ahead this blackboard eraser roller bearing is moved up and down along the cylinder on blackboard both sides; Tight spring and the loose spring be located on the cylinder of blackboard both sides can be respectively the power that the blackboard eraser roller bearing provides upwards, playbacks downwards; The bellows that are arranged at blackboard eraser roller bearing top can suck chalk dust in the capsule simultaneously by moving up and down of blackboard eraser roller bearing.
Described traction belt is provided with the aperture that rule is arranged, and described blackboard eraser roller bearing is provided with the little tooth that rule is arranged, and this structure is stung chain just as the wheel of the skiving in the bicycle blockchain and bitten traction belt.When the blackboard eraser roller bearing was left behind, this structure can be controlled blackboard eraser, was not pasting that blackboard rolls down but counter-rotating, the good blackboard of wiping that can be cleaner.
Described blackboard eraser roller bearing is provided with at least two above blackboard erasers.
The utility model is easy to use, both can wipe the writing on the blackboard very easily, can simultaneously chalk dust be collected again, prevents dust from flying, reduces classroom environment and pollutes, protection teachers and students physical and mental health.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of traction belt 4.
Fig. 3 is the structural representation of bellows 5.
Fig. 4 is the structural representation of capsule 6.
Among the figure: 1-spring (tightly); The 2-attaching parts; 3-spring (pine); The 4-traction belt;
The 5-bellows; The 6-capsule; 7-blackboard eraser roller bearing; The 8-handle.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
As shown in Figure 1, be roller type blackboard cleaning device of the present utility model, comprise tight spring 1, attaching parts 2, loose spring 3, traction belt 4, bellows 5, capsule 6, blackboard eraser roller bearing 7 and handle 8.Blackboard eraser roller bearing 7 is horizontally set on blackboard 10 planes by attaching parts 2, by the handle 8 that spurs blackboard 10 the place aheads this blackboard eraser roller bearing 7 is moved up and down along the cylinder 9 on blackboard 10 both sides; Tight spring 1 and the loose spring 2 be located on the blackboard 10 both sides cylinders 9 are respectively the power that blackboard eraser roller bearing 7 provides upwards, playbacks downwards; The bellows 5 that are arranged at blackboard eraser roller bearing 7 tops suck chalk dust in the capsule 7 simultaneously by moving up and down of blackboard eraser roller bearing 7.
As shown in Figure 2, structural representation for traction belt 4, this traction belt 4 is provided with the aperture 41 that rule is arranged, and corresponding blackboard eraser roller bearing 7 is provided with little tooth 71 (not shown)s that rule is arranged, and this structure setting is stung chain just as the wheel of the skiving in the bicycle blockchain and bitten traction belt.When blackboard eraser roller bearing 7 was left behind, this structure can be controlled blackboard eraser 72 (not shown)s, was not pasting that blackboard rolls down but counter-rotating, the good blackboard of wiping that can be cleaner.
When the blackboard eraser roller bearing was worked, chalk dust had just flown up, and at this moment bellows have just played a role.Bellows just as old times air blown producer, can stretch.Two-port respectively has the rubber film-making of the similar valve of a slice.Two valves all are unidirectional, and the gas that only allows of top comes out from bellows, never allows gas enter; Following is opposite, the pressure-controlled of also being bullied, but opposite owing to what design, its only import but no export.The bellows lower end connects a capsule 6, and its below is an opening, and the opening both sides make the sloping sample, also has a wicket 11 (not shown)s on the capsule 6, and the chalk dust of inspiration is therefrom poured out.When blackboard eraser was left behind, bellows 5 were elongated, last valve closure, and following valve ventilation, capsule 6 is air-breathing, brings dust into, and dust falls into the ditch that the slope forms.The blackboard eraser playback, last valve is ventilated and following closure, and air is from last discharge.
Claims (4)
1. a roller type blackboard cleaning device comprises a tight spring, a junction spare, a loose spring, a traction belt, bellows, a capsule, a leader and a blackboard eraser roller bearing; It is characterized in that: described blackboard eraser roller bearing is horizontally set on the blackboard plane by attaching parts, by the handle that spurs blackboard the place ahead this blackboard eraser roller bearing is moved up and down along the cylinder on blackboard both sides; Tight spring and the loose spring be located on the cylinder of blackboard both sides can be respectively the power that the blackboard eraser roller bearing provides upwards, playbacks downwards; The bellows that are arranged at blackboard eraser roller bearing top can suck chalk dust in the capsule simultaneously by moving up and down of blackboard eraser roller bearing.
2. roller type blackboard cleaning device according to claim 1 is characterized in that: described traction belt is provided with the aperture that rule is arranged.
3. roller type blackboard cleaning device according to claim 1 is characterized in that: described blackboard eraser roller bearing is provided with the little tooth that rule is arranged.
4. roller type blackboard cleaning device according to claim 1 is characterized in that: described blackboard eraser roller bearing is provided with at least two above blackboard erasers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202086806U CN201350776Y (en) | 2008-12-31 | 2008-12-31 | Roller shaft blackboard eraser device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202086806U CN201350776Y (en) | 2008-12-31 | 2008-12-31 | Roller shaft blackboard eraser device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201350776Y true CN201350776Y (en) | 2009-11-25 |
Family
ID=41374164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202086806U Expired - Fee Related CN201350776Y (en) | 2008-12-31 | 2008-12-31 | Roller shaft blackboard eraser device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201350776Y (en) |
-
2008
- 2008-12-31 CN CNU2008202086806U patent/CN201350776Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091125 Termination date: 20101231 |