CN203666208U - Dustproof blackboard eraser - Google Patents

Dustproof blackboard eraser Download PDF

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Publication number
CN203666208U
CN203666208U CN201320829670.5U CN201320829670U CN203666208U CN 203666208 U CN203666208 U CN 203666208U CN 201320829670 U CN201320829670 U CN 201320829670U CN 203666208 U CN203666208 U CN 203666208U
Authority
CN
China
Prior art keywords
blackboard eraser
blackboard
dust
box
curtain
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
CN201320829670.5U
Other languages
Chinese (zh)
Inventor
俞强
Original Assignee
俞强
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 俞强 filed Critical 俞强
Priority to CN201320829670.5U priority Critical patent/CN203666208U/en
Application granted granted Critical
Publication of CN203666208U publication Critical patent/CN203666208U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a dustproof blackboard eraser which is composed of a blackboard, a curtain, a spring, a rotary shaft, brush hairs, an outer shell, a handle and a box. The two sides of the upper end of the blackboard protrude out, and are fixedly provided with the shaft. The two ends of the spring are connected with circular rings, and the edges of the circular rings are rolled outwards. The edges of the two ends of the rotary shaft are rolled outwards, and the curtain is rolled on the rotary shaft. The brush hairs are arranged on the inner side and at the upper end of the outer shell, and the handle is arranged on the outer side of the outer shell. The box wall on the inner side of the box is inclined, and a movable door is arranged on the left side of the box. Dust can be blocked when the blackboard eraser is used for cleaning the blackboard, the wiping speed can be improved, the blackboard eraser is loosened after the blackboard is cleaned, the blackboard eraser is contracted to the upper end of the blackboard automatically, and convenience and fastness are achieved.

Description

Dust-proof blackboard eraser
Technical field
The utility model relates to a kind of blackboard eraser, especially a kind of dust-proof blackboard eraser.
Background technology
Blackboard eraser is the requisite article of classroom and training organization, mostly is square, is mainly made up of bristle, shell, and volume is small and exquisite, and the writing can wiping teacher writing on the blackboard is with wiping with putting, very convenient, is teacher's indispensable instrument of attending class.
When course is more nervous, teacher does not often have a lot of time to erase the board, and existing blackboard eraser is wasted time and energy while using, inefficiency, can not well clean off a blackboard, and can produce a large amount of dust, pollute the air in classroom, teacher, front-seat classmate's health is caused to harmful effect.If there is a kind of blackboard eraser, upper end is fixed with curtain, curtain twists in the rotating shaft of blackboard upper end, is provided with the box of dress dust below blackboard eraser, and blackboard eraser is put into and wants facing down and pull in the localities of wiping, just can wipe clean the word of writing on blackboard, wiping speed is like this both quick, laborsaving again, and dust also can not be diffused into classroom, improve the speed that teacher teaches, ensured classroom environment health.
Utility model content
In order to overcome the deficiency of above-mentioned existing product, the purpose of this utility model is to provide a kind of dust-proof blackboard eraser, it adopts and is provided with in blackboard upper end the rotating shaft of rolling curtain, rotating shaft internal sleeve has spring, curtain is fixed with blackboard eraser below, blackboard eraser is provided with bristle and handle, and blackboard eraser is provided with detachable box below.
In order to realize the technical scheme that the purpose of this utility model adopts be: a kind of dust-proof blackboard eraser, is characterized in that: it is made up of blackboard, curtain, spring, rotating shaft, bristle, shell, handle, box; Described blackboard is square, and both sides, upper end are outstanding, and are fixed with axle; Described spring is spirality, and two ends are connected with annulus, and annulus edge is outwards rolled up; Described rotating shaft is hollow cylindrical, and edges at two ends is outwards rolled up, and volume has curtain above; Described shell is square, and inner side and upper end are provided with bristle, and outside is provided with handle; Described box is square, and interior lateral box wall tilts, and the box left side is provided with dodge gate.
The beneficial effects of the utility model are: can either in the time erasing the board, block dust, can accelerate again wiping speed, after wiping, loose one's grip, and blackboard eraser automatic retraction blackboard upper end, convenient and swift.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Fig. 1 is the utility model structure chart
Fig. 2 is the utility model cutaway view
1-blackboard, 2-curtain, 3-spring, 4-rotating shaft, 5-bristle, 6-shell, 7-handle, 8-box in figure.
Detailed description of the invention
In the first embodiment shown in Fig. 1, Fig. 2, a kind of dust-proof blackboard eraser, is characterized in that: it is made up of blackboard, curtain, spring, rotating shaft, bristle, shell, handle, box; Described blackboard is square, and both sides, upper end are outstanding, and are fixed with axle; Described spring is spirality, and two ends are connected with annulus, and annulus edge is outwards rolled up; Described rotating shaft is hollow cylindrical, and edges at two ends is outwards rolled up, and volume has curtain above; Described shell is square, and inner side and upper end are provided with bristle, and outside is provided with handle; Described box is square, and interior lateral box wall tilts, and the box left side is provided with dodge gate.
In the second embodiment shown in Fig. 1, Fig. 2, described curtain can be rolled and pull, and is used for blocking dust, prevents that dust from wafing to outside; Described spring penetrates at spindle central, and two end supports is at rotating shaft two ends, in elongation state, wherein one end is fixed on blackboard upper shaft, not rotatable, thus spring meeting distortion in the process of rotating with rotating shaft, loose one's grip after blackboard eraser, spring restores automatically, makes curtain automatic rolling in rotating shaft; In the process that described rotating shaft pulls downwards at curtain, can rotate, and drive that end of spring activity to rotate, be used for screen-rollong cloth; Described bristle is dredged rare from top to bottom gradually, and dust is more easily fallen in box, and bristle is used for the writing of writing on blackboard wiping, and the bristle of upper end is used for the dust on wiping curtain; In the middle of described shell upper end and curtain lower end is fixed, and is used for supporting bristle with handle and is connected curtain and box; Described handle facilitates teacher to hold, blackboard wiping; Described box can be dismantled, and is used for filling dust, and the dodge gate on the left side is used for discharging dust.
While using the utility model, first hold handle, blackboard eraser is placed on and wants wiping content top, then pull blackboard eraser downwards, just can clean off a blackboard fast, and dust can not waft to outside, after wiping, loose one's grip, curtain is rolled onto in rotating shaft automatically, and blackboard eraser is and then raised to blackboard upper end; As required, box can be removed to cleaning, the opening on the left side can be discharged dust.

Claims (7)

1. a dust-proof blackboard eraser, is characterized in that: it is made up of blackboard, curtain, spring, rotating shaft, bristle, shell, handle, box; Described blackboard is square, and both sides, upper end are outstanding, and are fixed with axle; Described spring is spirality, and two ends are connected with annulus, and annulus edge is outwards rolled up; Described rotating shaft is hollow cylindrical, and edges at two ends is outwards rolled up, and volume has curtain above; Described shell is square, and inner side and upper end are provided with bristle, and outside is provided with handle; Described box is square, and interior lateral box wall tilts, and the box left side is provided with dodge gate.
2. dust-proof blackboard eraser according to claim 1, is characterized in that: described curtain can be rolled and pull.
3. dust-proof blackboard eraser according to claim 1, it is characterized in that: described spring penetrates at spindle central, two end supports is at rotating shaft two ends, in elongation state, wherein one end is fixed on blackboard upper shaft, not rotatable, thus spring meeting distortion in the process of rotating with rotating shaft, loose one's grip after blackboard eraser, spring restores automatically.
4. dust-proof blackboard eraser according to claim 1, is characterized in that: in the process that described rotating shaft pulls downwards at curtain, can rotate, and drive that end of spring activity to rotate.
5. dust-proof blackboard eraser according to claim 1, is characterized in that: described bristle is dredged rare from top to bottom gradually.
6. dust-proof blackboard eraser according to claim 1, is characterized in that: in the middle of described shell upper end and curtain lower end is fixed.
7. dust-proof blackboard eraser according to claim 1, is characterized in that: described box can be dismantled.
CN201320829670.5U 2013-12-11 2013-12-11 Dustproof blackboard eraser Expired - Fee Related CN203666208U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320829670.5U CN203666208U (en) 2013-12-11 2013-12-11 Dustproof blackboard eraser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320829670.5U CN203666208U (en) 2013-12-11 2013-12-11 Dustproof blackboard eraser

Publications (1)

Publication Number Publication Date
CN203666208U true CN203666208U (en) 2014-06-25

Family

ID=50962536

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320829670.5U Expired - Fee Related CN203666208U (en) 2013-12-11 2013-12-11 Dustproof blackboard eraser

Country Status (1)

Country Link
CN (1) CN203666208U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475377A (en) * 2014-11-26 2015-04-01 江汉大学 Dust cleaning device
CN107599684A (en) * 2015-11-30 2018-01-19 沈晶晶 A kind of improved multi-functional blackboard
CN113910814A (en) * 2021-10-28 2022-01-11 湖南文理学院 Business english translation demonstration board

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475377A (en) * 2014-11-26 2015-04-01 江汉大学 Dust cleaning device
CN107599684A (en) * 2015-11-30 2018-01-19 沈晶晶 A kind of improved multi-functional blackboard
CN113910814A (en) * 2021-10-28 2022-01-11 湖南文理学院 Business english translation demonstration board

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Legal Events

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

Granted publication date: 20140625

Termination date: 20141211