CN2180480Y - Rotary type blackboard erasing device - Google Patents
Rotary type blackboard erasing device Download PDFInfo
- Publication number
- CN2180480Y CN2180480Y CN 93247421 CN93247421U CN2180480Y CN 2180480 Y CN2180480 Y CN 2180480Y CN 93247421 CN93247421 CN 93247421 CN 93247421 U CN93247421 U CN 93247421U CN 2180480 Y CN2180480 Y CN 2180480Y
- Authority
- CN
- China
- Prior art keywords
- brush
- groove
- steel plate
- model
- utility
- 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 rotary type blackboard erasing device, which is composed of a motor, a round trip circuit and an elastic powder eraser box. The utility model is characterized in that the elastic powder eraser box is installed on a motor shaft directly; the elastic powder eraser box is composed of a stepping elastic press element and a powder eraser slot; single side of the powder eraser slot is provided with a clamp plate bar. The utility model has the advantages of convenient installation and low cost, and is suitable for the blackboards with various types.
Description
The utility model relates to a kind of rotary automatic erasing blackboard device, belongs to the teaching aid articles for use.
Existing automatic erasing blackboard device generally is the effect that is reached automatic blackboard cleaning by transmission mechanism drive chalkboard eraser.But required accessory is more, trouble is installed, and can not uses between excessive or too small blackboard neatly.
The purpose of this utility model provides a kind of simple in structure, and simple installation can satisfy the rotary automatic erasing blackboard device that all kinds of model blackboards use.
The utility model is realized as follows.Rotary automatic erasing blackboard device is wiped box by motor, round circuit and elasticity and is formed.Said elasticity is wiped box and is directly installed on the motor shaft.Said elasticity brush box suppresses part and the brush groove is formed by stepped.Said stepped suppress part by two block length weak points differ, an end bending, the other end be made up of the steel plate in the hole of several diameters and motor shaft size, its short-and-medium steel plate is on long steel plate.Described stepped elastic pressure parts provides an elastic force pressure to the brush groove, makes it be close to blackboard.One end of said brush groove has several diameters the same big with the described stepped aperture that suppresses the part steel plate.Said its base plate of brush groove is slightly wideer than groove, is to prevent dust from flying usefulness.A side has a fitting strip in the groove of said brush groove, uses as the width in the regulating tank.One brush plate can be arranged in the groove of said brush groove.
Description of drawings:
Fig. 1 is a schematic diagram of the present utility model.
Fig. 2 is a side view of the present utility model.
Fig. 3 is the cutaway view of Fig. 2 along the A-A line.
With reference to scheming: (1), blackboard, (2), brush groove, (3), long steel plate,
(4), short steel plate, (5), motor, (6), steel garden tube,
(7), brush (can be the brush plate), (8), fitting strip.
Concrete structure of the present utility model is provided by embodiment and accompanying drawing.
With reference to Fig. 2, on a micromachine (5) axle, install the nut of 1 centimetre of thickness successively, the brush groove (2) that the aluminium skin is made, the steel garden tube (6) that thickness is about 2 centimetres, about 0.3 centimetre of thickness, length are two long steel plates (3) of (2) three parts of brush grooves, a steel garden tube (6), thickness is that 0.3 centimetre, length are the short steel plates (4) of long steel plate (3) 2/3rds, screws on nut then and tightens up.Knee, short steel plate (4) upper end is welded on the long steel plate (3).Knee, long steel plate (3) upper end is with on the fixing brush groove (2) of screw.The fitting strip (8) that one length and brush groove (2) are same long is fixed in a side in the groove of brush groove (2) by two screws, brush (7) (also can be the brush plate) is put in the brush groove (2), is tightened up by two screws on the fitting strip (8).
During operation, brush or wrap in the brush of making on the brush plate with towel and be installed in the brush groove, connect power supply then, motor makes elasticity brush box do rotary moving.When elasticity brush box dropped on blackboard bottom frame, the motor that controlled by round circuit can be auto-reverse, and reach the effect of automatic blackboard cleaning.The utility model simple installation, the cheap and efficient height that erases the board.
Claims (3)
1, a kind of rotary automatic erasing blackboard device is characterized in that the elasticity brush is directly installed on the motor shaft.
2, by the described automatic erasing blackboard device of claim 1, said elasticity brush box suppresses part and the brush groove is formed by stepped, it is characterized in that:
1., the described stepped part that suppresses, have two block length weak points to differ and an end bending, the other end is made up of the steel plate in the hole of several diameters and motor shaft size, its short-and-medium steel plate is on long steel plate.
2., described brush groove, it is characterized in that brush groove one end has the hole of several diameters and motor shaft size.
3, put by the described rotary automatic erasing blackboard of claim 1, it is characterized in that the interior side of groove of the brush groove in the described elasticity brush box has a fitting strip and a brush plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247421 CN2180480Y (en) | 1993-12-10 | 1993-12-10 | Rotary type blackboard erasing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247421 CN2180480Y (en) | 1993-12-10 | 1993-12-10 | Rotary type blackboard erasing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2180480Y true CN2180480Y (en) | 1994-10-26 |
Family
ID=33819831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247421 Expired - Fee Related CN2180480Y (en) | 1993-12-10 | 1993-12-10 | Rotary type blackboard erasing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2180480Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108001084A (en) * | 2017-12-04 | 2018-05-08 | 方正圆 | A kind of blackboard quickly wiped with two-sided switching of imparting knowledge to students |
-
1993
- 1993-12-10 CN CN 93247421 patent/CN2180480Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108001084A (en) * | 2017-12-04 | 2018-05-08 | 方正圆 | A kind of blackboard quickly wiped with two-sided switching of imparting knowledge to students |
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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 |