CN2640768Y - Blackboard erazing machine - Google Patents
Blackboard erazing machine Download PDFInfo
- Publication number
- CN2640768Y CN2640768Y CN 02227314 CN02227314U CN2640768Y CN 2640768 Y CN2640768 Y CN 2640768Y CN 02227314 CN02227314 CN 02227314 CN 02227314 U CN02227314 U CN 02227314U CN 2640768 Y CN2640768 Y CN 2640768Y
- Authority
- CN
- China
- Prior art keywords
- blackboard
- elastic plate
- erasing machine
- eraser
- round tube
- 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 belongs to the field of school article, relating to a blackboard cleaner which consists of a driving unit, a transporting unit and an elastic device; the transporting unit consists of four belt pulleys fixed in the wall and belts; the elastic device consists of a round tube and an elastic plate which can slide on the round tube reciprocatingly, both ends of the round tube is arranged on the round tube fixing rack, while both ends of the elastic plate are respectively connected with the belts; the strip blackboard eraser is arranged on the inner face of the elastic plate and tightly contacted with the outer surface of the blackboard; and the driving unit is divided into manual and electrical type. The utility model fundamentally changes the traditional style of cleaning blackboard by people; when the dust on the blackboard eraser accumulated to a certain amount, the eraser is momentarily picked down from the elastic plate and cleaned outside the classroom; which avoids the dust damage to human body, and improved the working efficiency of the teacher.
Description
Technical field
The utility model belongs to school's articles for daily use, relates to a kind of blackboard erasing machine.
Background technology
Blackboard of the prior art is mostly by manually wiping, especially suburbs and rural area and even outlying district, and chalk dust is easy to be absorbed by the body, and it is very unfavorable to health to go down for a long time.In addition, rely on and manually wipe blackboard, not only also wasted listening to the teacher the time of student, also influenced teacher's teaching efficient.
Summary of the invention
For overcoming above-mentioned deficiency of the prior art, the utility model provides a kind of blackboard erasing machine, to reduce the pollution of chalk dust to human body, improves teacher's teaching efficient.
The technical scheme that its technical problem that solves the utility model adopts: a kind of blackboard erasing machine, comprise blackboard eraser, its substantive distinguishing features is: described blackboard erasing machine is constituted by drive part, hop and elastic device; Described hop comprises four belt pulleys and the belt thereof that is fixed in the body of wall; Elastic device comprises pipe and the elastic plate that can reciprocatingly slide as level on pipe, the two ends of pipe place on the pipe fixed mount, the two ends of elastic plate are connected with belt respectively, and the blackboard eraser of strip is positioned the inner surface of elastic plate and is close to the outer surface setting of blackboard.
Compared with prior art, the utlity model has following beneficial effect:,, can adopt the electrodynamic type structure for the reasonable school of electricity consumption condition because of its drive part can adopt electrodynamic type and two kinds of frame modes of hand respectively; For electricity consumption condition relatively poor rural area and outlying district, the then suitable hand structure that adopts.Thoroughly changed traditional mode of manually wiping blackboard.
No matter being electrodynamic type or hand structure, all is to drive the elastic plate be connected with belt and be arranged at blackboard eraser on the elastic plate by belt pulley to be close to the blackboard surface and to slide along pipe, reaches blackboard eraser except that clean purpose.Its structural design advantages of simple, convenient to use, wipe effective.Improved teacher's operating efficiency greatly.
When the dust on the blackboard eraser reaches a certain amount of, but not timing ground it is taken off from elastic plate, and outside the classroom, clear up, avoided the injury of chalk dust to human body.
Description of drawings
Fig. 1 is the structural representation (electrodynamic type) of a kind of embodiment of the utility model;
Fig. 2 is the left TV structure schematic diagram of Fig. 1;
Fig. 3 is the structural representation (hand) of the another kind of embodiment of the utility model;
Fig. 4 is the left TV structure schematic diagram of Fig. 3;
Fig. 5 is the part sectioned view of elastic device;
Fig. 6 is the structural representation of two-groove belt pulley;
Fig. 7 is the structural representation of single groove belt pulley.
Among the figure, 1. motor; 2. reductor; 3. belt; 4a. two-groove belt pulley; 4b. single groove belt pulley; 4c. three-flute belt pulley; 5. pipe; 6. elastic plate; 7. wind; 8. blackboard; 9. shell; 10. pipe fixed mount; 11. blackboard eraser.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described in further detail.
Electrodynamic type blackboard erasing machine shown in Fig. 1,2,5 is constituted by drive part, hop and elastic device, and its hop comprises four belt pulley 4a, 4b and the belt 3 thereof that is fixed in the body of wall; Its elastic device comprises pipe 5 and the elastic plate 6 that can reciprocatingly slide as level on pipe 5, the two ends of pipe 5 place on the pipe fixed mount 10, and the two ends of elastic plate 6 are connected with belt 3 respectively; The blackboard eraser 11 of strip is positioned the inner surface of elastic plate 6 and is close to the outer surface setting of blackboard 8.Body is used to control the time switch case of motor 1 outward to its drive part and the reductor 2 that drives by motor 1 constitutes by being arranged at, except that elastic plate 6, the remainder of blackboard erasing machine by shell 9 sealing covers in body of wall.
Described time switch case is made of timer and left and right switch, and its rotating speed of motor after slowing down is decided according to the size of blackboard in 60 rev/mins.During use, switch-box can be arranged on the dais, so that operation of teacher.
Hand blackboard erasing machine shown in Fig. 3,4,5 is constituted by drive part, hop and elastic device, and its hop is all identical with the electrodynamic type blackboard erasing machine with elastic device.Its drive part is made of the wind 7 that is arranged at 4a on the belt pulley of blackboard 8 left sides belows, except that elastic plate 6 and wind 7, the remainder of blackboard erasing machine by shell 9 sealing covers in body of wall.
With reference to Fig. 6,7, the belt pulley of above-mentioned two kinds of embodiment is respectively two-groove belt pulley 4a and single groove belt pulley 4b and three-flute belt pulley 4c (not drawing among the figure).For the hand blackboard erasing machine, the belt pulley that is arranged at blackboard 8 left sides is two-groove belt pulley 4a, and the belt pulley that is arranged at blackboard 8 right sides is single groove belt pulley 4b.For the electrodynamic type blackboard erasing machine, the belt pulley that is arranged at top, blackboard 8 left sides is two-groove belt pulley 4a, and the belt pulley of below, left side then is three-flute belt pulley 4c, and the belt pulley that is arranged at blackboard 8 right sides still is single groove belt pulley 4b.
Described shell 9 can be made by plastic processing, and also materials processing such as available galvanized iron sheet is made certainly.
Claims (5)
1, a kind of blackboard erasing machine comprises blackboard eraser, it is characterized in that described blackboard erasing machine is constituted by drive part, hop and elastic device; Described hop comprises four belt pulleys and the belt thereof that is fixed in the body of wall; Elastic device comprises pipe and the elastic plate that can reciprocatingly slide as level on pipe, the two ends of pipe place on the pipe fixed mount, the two ends of elastic plate are connected with belt respectively, and the blackboard eraser of strip is positioned the inner surface of elastic plate and is close to the outer surface setting of blackboard.
2, blackboard erasing machine according to claim 1 is characterized in that described drive part is used to control the time switch case of motor outward and constitutes by electric motor driven reductor by being arranged at body.
3, blackboard erasing machine according to claim 1 is characterized in that described drive part is made of the wind that is arranged on the belt pulley of below, blackboard left side.
4, blackboard erasing machine according to claim 2 is characterized in that its rotating speed of motor after slowing down is in 60 rev/mins.
5, blackboard erasing machine according to claim 1, the length that it is characterized in that described blackboard eraser is the height of blackboard panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02227314 CN2640768Y (en) | 2002-05-08 | 2002-05-08 | Blackboard erazing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02227314 CN2640768Y (en) | 2002-05-08 | 2002-05-08 | Blackboard erazing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2640768Y true CN2640768Y (en) | 2004-09-15 |
Family
ID=34280839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02227314 Expired - Fee Related CN2640768Y (en) | 2002-05-08 | 2002-05-08 | Blackboard erazing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2640768Y (en) |
-
2002
- 2002-05-08 CN CN 02227314 patent/CN2640768Y/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 | ||
| 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 |