CN204172565U - A kind of blackboard eraser - Google Patents
A kind of blackboard eraser Download PDFInfo
- Publication number
- CN204172565U CN204172565U CN201420480147.0U CN201420480147U CN204172565U CN 204172565 U CN204172565 U CN 204172565U CN 201420480147 U CN201420480147 U CN 201420480147U CN 204172565 U CN204172565 U CN 204172565U
- Authority
- CN
- China
- Prior art keywords
- blackboard
- gear
- fixed frame
- blackboard eraser
- chain
- 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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- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a kind of blackboard eraser, comprise blackboard and blackboard eraser, it is characterized in that: described blackboard eraser is fixedly mounted on a fixed frame being installed on the upper and lower two ends of blackboard, two journal stirrups on described fixed frame are provided with pulley, can slide at the two ends up and down of blackboard, described blackboard two ends are installed with two gears, connect with chain between described gear, chain-driving fixed frame moves, having one to be driving gear between two gears is also duplicate gear, and one of them gear of duplicate gear is connected with upper gear of motor shaft.The beneficial effects of the utility model are: drive blackboard eraser to carry out wiping by mounted motor on blackboard, blackboard wiping is convenient and swift, and time saving and energy saving, and this structure is simple simultaneously, easy to assembly, practical.
Description
Technical field
The utility model belongs to a kind of teaching aid, relates to a kind of blackboard eraser concretely.
Background technology
Existing blackboard eraser is all generally the blackboard eraser using palm size, teacher write full blackboard teach complete in, often to carry out wiping to blackboard, that teacher is write will wipe, use for next class teacher or need the course of teaching after continuing to write for teacher, but, because blackboard eraser is smaller, waste time and energy when blackboard wiping.Very inconvenient.
Based on above problem, be necessary to improve existing blackboard eraser, to improve blackboard-cleaning efficiency.
Summary of the invention
In view of there is above problem, the utility model provides a kind of blackboard eraser, has blackboard wiping efficiency high and fast and need not be artificial, time saving and energy saving advantage.
The technical solution of the utility model is: a kind of blackboard eraser, comprise blackboard and blackboard eraser, it is characterized in that: described blackboard eraser is fixedly mounted on a fixed frame being installed on the upper and lower two ends of blackboard, two journal stirrups on described fixed frame are provided with pulley, can slide at the two ends up and down of blackboard, described blackboard two ends are installed with two gears, connect with chain between described gear, chain-driving fixed frame moves, having one to be driving gear between two gears is also duplicate gear, and one of them gear of duplicate gear is connected with upper gear of motor shaft.The technical program is arranged on a blackboard eraser that can slide on blackboard length direction by arranging a blackboard eraser that can cover whole blackboard width, is moved back and forth, carry out wiping to blackboard by driven by motor, has fast, mechanical labour-saving advantage.
Further: the upper and lower two ends of described blackboard are provided with groove, described groove matches with the pulley on the journal stirrup that fixed frame is arranged, affiliated fixed frame is provided with gear and chain interoperation, described gear lower end is provided with tooth bar, described gear length is suitable with blackboard, and tooth bar width two ends are welded on the journal stirrup of fixed frame.The advantage structure of the technical program is simple, has easy to operate, and it is convenient to change.
Further:: on the left and right sidewall of described blackboard, motor switch button is installed.The technical program structure is simple, and easily fixing, shift knob is provided with control button back and forth, and Convenient blackboard is wiped and moved back and forth.
beneficial effect
The beneficial effects of the utility model are: drive blackboard eraser to carry out wiping by mounted motor on blackboard, blackboard wiping is convenient and swift, and time saving and energy saving, and this structure is simple simultaneously, easy to assembly, practical.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of blackboard and blackboard eraser in the utility model.
Fig. 2 is the structural representation of fixed frame and blackboard eraser in the utility model.
Fig. 3 is the side view of blackboard.
Fig. 4 is the structural representation of motor in the utility model.
Fig. 5 is the structural representation of the utility model middle rack.
Detailed description of the invention
As a kind of embodiment of the present utility model, as shown in Figure 1,2,3, 4, a kind of blackboard eraser, comprising blackboard eraser described in blackboard 1 and blackboard eraser 5 is fixedly mounted on a fixed frame 2 being installed on the upper and lower two ends of blackboard, two journal stirrups on described fixed frame are provided with pulley 6, pulley is arranged on the journal stirrup of fixed frame by bearing pin, coordinates between pulley with bearing pin for movable; Pulley also can slide in the longitudinal direction at the two ends up and down of blackboard 1, described blackboard two ends are installed with two gears 11,3, connect with chain between described gear, chain-driving fixed frame 2 moves, having one to be driving gear 3 between two gears is also duplicate gear, duplicate gear is existing common duplicate gear, and in a lot of equipment, one of them gear of duplicate gear is connected with the upper gear of motor shaft 9 on motor 4; Described motor is connected by electric wire with power supply; Gear 11,3 is arranged on two angles of blackboard length by the axle be fixed on wall, near blackboard edge.The technical program is arranged on a blackboard eraser that can slide on blackboard length direction by arranging a blackboard eraser that can cover whole blackboard width, is driven and moves back and forth, carry out wiping to blackboard by motor 4, has fast, mechanical labour-saving advantage.
In the present embodiment: as shown in Fig. 2,4,5, the upper and lower two ends of described blackboard are provided with groove 7, described groove matches with the pulley 6 on the journal stirrup that fixed frame is arranged, affiliated fixed frame is provided with gear 8 and chain interoperation, described gear 8 is arranged on fixed frame journal stirrup by bearing pin is matched in clearance between gear and bearing pin certainly, and gear 8 is rotary on bearing pin.Square hole 13 is had in gear 8 lower end, square hole lower end is welded with tooth bar 12, gear 12 length is suitable with blackboard length, gear 12 welds with fixed frame on width, tooth bar two ends from weld are unsettled, although be unsettled, owing to not having the power in an applying countryside to tooth bar, tooth bar is no problem in intensity; When blackboard wiping is carried out in the wiping of needs mobile blackboard, motor transmits power by chain-driving sprocket wheel, chain by power transmission to the gear 8 be arranged on fixed frame, gear handle coordinates with tooth bar, driven gear moves, thus drive fixed frame to move, drive blackboard eraser to carry out blackboard wiping further.The advantage structure of the technical program is simple, has easy to operate, and it is convenient to change.
In the present embodiment, blackboard eraser is dismountable, when blackboard eraser damage or wiping effect poor, the blackboard eraser that old blackboard eraser takes off installation one new from fixed frame got on, changes easily.Its structure notch or buckle structure match just passable, and blackboard eraser edge arranges outstanding clamp, fixed frame is arranged at the hole that clamp matches, after blackboard eraser puts in, clamp coordinates the object reaching and install blackboard eraser with hole.
In the present embodiment: as Fig. 1 as described in the left side of blackboard or right side wall are provided with motor switch button 10, shift knob 10 is arranged on the electric wire between power supply and motor by electric wire; Blackboard eraser can be moved back and forth in the length range of blackboard by motor by gauge tap.The technical program structure is simple, and easily fixing, shift knob is provided with control button back and forth, and Convenient blackboard wipes wiping back and forth.
Various parts in the utility model such as, chain, gear and motor, all can commercially buy, and its structure is also fairly simple, and therefore, its structure structure diagram is all illustrated by the equipment such as pulley.
Above exhaustive presentation is carried out to a kind of blackboard eraser provided by the utility model, apply specific case herein to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.To change of the present utility model with to improve to be possible, and design and scope that accessory claim can specify can not be exceeded.
Claims (3)
1. a blackboard eraser, comprise blackboard and blackboard eraser, it is characterized in that: described blackboard eraser is fixedly mounted on a fixed frame being installed on the upper and lower two ends of blackboard, two journal stirrups on described fixed frame are provided with pulley, can slide at the two ends up and down of blackboard, described blackboard two ends are installed with two gears, connect with chain between described gear, chain-driving fixed frame moves, having one to be driving gear between two gears is also duplicate gear, and one of them gear of duplicate gear is connected by chain drive with upper gear of motor shaft.
2. a kind of blackboard eraser according to claim 1, it is characterized in that: the upper and lower two ends of described blackboard are provided with groove, described groove matches with the pulley on the journal stirrup that fixed frame is arranged, affiliated fixed frame is provided with gear and chain interoperation, described gear lower end is provided with tooth bar, described gear length is suitable with blackboard, and tooth bar width two ends are welded on the journal stirrup of fixed frame.
3. a kind of blackboard eraser according to claim 2, is characterized in that: on the left or right sidewall of described blackboard, be provided with motor switch button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480147.0U CN204172565U (en) | 2014-08-25 | 2014-08-25 | A kind of blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420480147.0U CN204172565U (en) | 2014-08-25 | 2014-08-25 | A kind of blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204172565U true CN204172565U (en) | 2015-02-25 |
Family
ID=52561401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420480147.0U Expired - Fee Related CN204172565U (en) | 2014-08-25 | 2014-08-25 | A kind of blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204172565U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109017050A (en) * | 2018-09-03 | 2018-12-18 | 张天泽 | Multi-functional blackboard is used in a kind of education |
| CN109130606A (en) * | 2018-08-27 | 2019-01-04 | 杨淞元 | A kind of figure displaying blackboard |
-
2014
- 2014-08-25 CN CN201420480147.0U patent/CN204172565U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109130606A (en) * | 2018-08-27 | 2019-01-04 | 杨淞元 | A kind of figure displaying blackboard |
| CN109130606B (en) * | 2018-08-27 | 2024-05-17 | 杨淞元 | Graphic display blackboard |
| CN109017050A (en) * | 2018-09-03 | 2018-12-18 | 张天泽 | Multi-functional blackboard is used in a kind of education |
| CN109017050B (en) * | 2018-09-03 | 2019-12-27 | 张天泽 | Multifunctional blackboard for education |
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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: 20150225 Termination date: 20150825 |
|
| EXPY | Termination of patent right or utility model |