CN203282922U - Automatic blackboard eraser for Chinese teaching - Google Patents

Automatic blackboard eraser for Chinese teaching Download PDF

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Publication number
CN203282922U
CN203282922U CN201320312839XU CN201320312839U CN203282922U CN 203282922 U CN203282922 U CN 203282922U CN 201320312839X U CN201320312839X U CN 201320312839XU CN 201320312839 U CN201320312839 U CN 201320312839U CN 203282922 U CN203282922 U CN 203282922U
Authority
CN
China
Prior art keywords
blackboard eraser
automatic blackboard
hairbrush
rotary head
hairbrushes
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
Application number
CN201320312839XU
Other languages
Chinese (zh)
Inventor
孙贻峰
Original Assignee
孙贻峰
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 孙贻峰 filed Critical 孙贻峰
Priority to CN201320312839XU priority Critical patent/CN203282922U/en
Application granted granted Critical
Publication of CN203282922U publication Critical patent/CN203282922U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an automatic blackboard eraser for Chinese teaching. The automatic blackboard eraser for Chinese teaching comprises a shell, hairbrushes, a driving motor, a small gear, a big gear and a rotating head, wherein a rotation shaft of the driving motor is connected with the big gear, the big gear is meshed with the small gear, the small gear is fixedly connected with the rotating head, and the hairbrushes are arranged on the rotating head. By means of the automatic blackboard eraser, the relative movement among the hairbrushes is adopted, the friction force between the hairbrushes and a blackboard is increased, dust prints on the blackboard are effectively removed, the repeating motion is reduced, the erasing effect is good, and the automatic blackboard eraser is simple in structure and convenient to use.

Description

A kind of language teaching automatic blackboard eraser
Technical field
The utility model relates to a kind of teaching aid, refers more particularly to a kind of language teaching automatic blackboard eraser.
Background technology
In the language teaching process, often need writing on the blackboard is carried out in the content of courses, need the person's handwriting on blackboard is removed after using blackboard, general custom is used blackboard eraser, the main arm that relies on keeps pressure and the frictional force alternation of blackboard eraser to blackboard, firmly kicks the beam and does not reach the effect of wiping, overexerts and easily causes dust from flying, get off for a long time and not only waste time and energy, but also teacher's health is damaged to some extent.
The utility model content
The purpose of this utility model provides a kind of minimizing repeating motion, the language teaching automatic blackboard eraser that wiping effect is good with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises housing, hairbrush, drive motors, pinion, gear wheel and rotary head, the rotating shaft of described drive motors is connected with described gear wheel, described gear wheel and the engagement of described pinion, described pinion is fixedly connected with described rotary head, is provided with described hairbrush in described rotary head.
Particularly, the bristle on described hairbrush is arranged in the shape of a spiral.
Further, described rotary head is one or more rotary head.
As preferentially, be provided with circular-arc handle on described housing, facilitate user's taking and placing.
The beneficial effects of the utility model are:
The utility model adopts the relative motion of a plurality of hairbrush, has increased the frictional force between hairbrush and blackboard, effectively removes the dust trace on blackboard, reduces repeating motion, and wiping effect is good, and is simple in structure, easy to use.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is top view of the present utility model.
Fig. 3 is upward view of the present utility model.
In figure: 1-drive motors, 2-pinion, 3-rotary head, 4-hairbrush, 5-gear wheel, 6-handle, 7-housing.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, the utility model comprises housing 7, hairbrush 4, drive motors 1, pinion 2, gear wheel 5 and rotary head 3, the rotating shaft of drive motors 1 is connected with gear wheel 5, gear wheel 5 and pinion 2 engagements, pinion 2 is fixedly connected with rotary head 3, is provided with hairbrush 4 in rotary head 3, and the bristle on hairbrush 4 is arranged in the shape of a spiral, make hairbrush 4 more can drive blackboard eraser when blackboard wiping and move, increase the frictional force of blackboard eraser.
As shown in Figures 2 and 3, in the present embodiment, rotary head 3 is three rotary heads, rotation by gear wheel 5, pinion 2 takes three rotary heads 3 to and does relative rotary motion, and hairbrush 4 makes on blackboard and do not stay the dust trace, can reach good wiping effect, be provided with circular-arc handle 6 on housing 7, facilitate user's taking and placing.
These are only preferred embodiment of the present utility model,, not in order to limit the utility model, all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., all should be included in protection domain of the present utility model.

Claims (4)

1. language teaching automatic blackboard eraser, comprise housing, it is characterized in that: also comprise hairbrush, drive motors, pinion, gear wheel and rotary head, the rotating shaft of described drive motors is connected with described gear wheel, described gear wheel and the engagement of described pinion, described pinion is fixedly connected with described rotary head, is provided with described hairbrush in described rotary head.
2. a kind of language teaching automatic blackboard eraser according to claim 1, it is characterized in that: the bristle on described hairbrush is arranged in the shape of a spiral.
3. a kind of language teaching automatic blackboard eraser according to claim 1 is characterized in that: described rotary head is one or more.
4. a kind of language teaching automatic blackboard eraser according to claim 1, is characterized in that: be provided with circular-arc handle on described housing.
CN201320312839XU 2013-06-02 2013-06-02 Automatic blackboard eraser for Chinese teaching Expired - Fee Related CN203282922U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320312839XU CN203282922U (en) 2013-06-02 2013-06-02 Automatic blackboard eraser for Chinese teaching

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320312839XU CN203282922U (en) 2013-06-02 2013-06-02 Automatic blackboard eraser for Chinese teaching

Publications (1)

Publication Number Publication Date
CN203282922U true CN203282922U (en) 2013-11-13

Family

ID=49539302

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320312839XU Expired - Fee Related CN203282922U (en) 2013-06-02 2013-06-02 Automatic blackboard eraser for Chinese teaching

Country Status (1)

Country Link
CN (1) CN203282922U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105882268A (en) * 2016-04-12 2016-08-24 宿州学院 Blackboard eraser good in adaptability

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105882268A (en) * 2016-04-12 2016-08-24 宿州学院 Blackboard eraser good in adaptability

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Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131113

Termination date: 20140602

C17 Cessation of patent right