CN209719075U - A kind of dust-proof blackboard eraser - Google Patents
A kind of dust-proof blackboard eraser Download PDFInfo
- Publication number
- CN209719075U CN209719075U CN201821762638.9U CN201821762638U CN209719075U CN 209719075 U CN209719075 U CN 209719075U CN 201821762638 U CN201821762638 U CN 201821762638U CN 209719075 U CN209719075 U CN 209719075U
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- teeth
- gear
- section
- dust
- scrubbing pad
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Abstract
This application discloses a kind of dust-proof blackboard erasers of blackboard cleaning device technical field, including box body and scrubbing pad, sliding slot and powder collection cavity are equipped in box body, air inlet and air outlet are equipped in powder collection cavity, scrubbing pad is slidably connected with sliding slot, and scrubbing pad is equipped with connecting rod, and connecting rod is fixed with slider box far from one end of scrubbing pad, slider box includes upper ledge, lower frame, left frame and right frame, and the teeth of glide direction arrangement along the chute are equipped on the inside of upper ledge and lower frame；Gear is equipped in slider box, gear is divided into teeth section and anodontia section, and with teeth section of arc length is not more than anodontia section of arc length, with teeth section is engaged with teeth, gear, which extends out, rotation axis, and rotation axis runs through air inlet, and rotation axis is far from the dextrorotation flabellum for being evenly equipped with several circumferential arrangements on one end of gear.This programme solves the problems, such as that existing blackboard eraser cannot absorb chalk dust.
Description
Technical field
The utility model relates to blackboard cleaning device technical fields, and in particular to a kind of dust-proof blackboard eraser.
Background technique
It is well known that blackboard used in all kinds of middle and primary schools in China is still based on traditional blackboard, blackboard is always
It is exactly the essential product of primary school and middle school teaching, is used to for teachers and students' writing and teaching data, due to the limited area of blackboard, and course
There are many content, it is therefore necessary to constantly clear up blackboard using blackboard eraser.Because attending class writing on the blackboard to be write daily, erase the board, chalk
Teacher is often made with dishevelled hair and a dirty face by ash, although chalk dust has no big evil to human body, numerous teachers will use chalk daily
Writing on the blackboard is done, is all lived in the chalk dust after erasing the board daily, nose, pharynx, throat still can be caused uncomfortable.
When wiping blackboard using blackboard eraser, since existing blackboard eraser is only made of simple scrubbing pad and box body, not
The mechanism for having setting to absorb chalk dust is fallen on desk so chalk dust can dance in the air all over the sky, before dais, or even is inhaled into people
It is internal, it is unhealthful.
Summary of the invention
The utility model is intended to provide a kind of dust-proof blackboard eraser, cannot absorb asking for chalk dust to solve existing blackboard eraser
Topic.
In order to solve the above-mentioned technical problem, the utility model provides the following technical solutions: a kind of dust-proof blackboard eraser, including box
Body and scrubbing pad are equipped with sliding slot and powder collection cavity in the box body, are equipped with air inlet and air outlet in the powder collection cavity, the scrubbing pad with
Sliding slot is slidably connected, and the scrubbing pad is equipped with connecting rod, and the connecting rod is fixed with slider box, the cunning far from one end of scrubbing pad
Dynamic frame includes upper ledge, lower frame, left frame and right frame, and the tooth of glide direction arrangement along the chute is equipped on the inside of the upper ledge and lower frame
Tooth；Gear is equipped in the slider box, the gear is divided into teeth section and anodontia section, and with teeth section of the arc length is no more than anodontia
The arc length of section, described with teeth section is engaged with teeth, and the gear, which extends out, rotation axis, and the rotation axis runs through air inlet,
The rotation axis is far from the dextrorotation flabellum for being evenly equipped with several circumferential arrangements on one end of gear.
Working principle of the utility model is: using this programme come when wiping blackboard, hand holds the two sides of box body, against blackboard
Wiping, blackboard eraser is being moved with the motion profile of a similar arc-shaped at this time, when blackboard eraser moves left and right, because of scrubbing pad
It is slidably connected with the intracorporal sliding slot of box, the scrubbing pad will horizontally slip, and be connect with scrubbing pad by connecting rod to drive
Slider box can also horizontally slip, and because the teeth of glide direction arrangement along the chute, tooth are equipped on the inside of upper ledge and lower frame
Tooth engage with teeth section of gear again, and when engaging with the teeth of a frame for teeth section, another frame not with have
Tooth section has meshing relation, so gear just can rotate, at the end of the teeth of upper ledge are engaged with teeth section, the teeth of lower frame are just
It is engaged with teeth section, in this way when slider box horizontally slips, gear towards rotating counterclockwise, thus will drive the right side always
Flabellum rotation is revolved, and then generates the wind for blowing to powder collection cavity, wind just will drive the chalk dust generated when wiping and move into powder collection cavity,
Chalk dust will be collected in powder collection cavity in this way.
It is this spy of the reciprocal movement in left and right when the utility model has the following beneficial effects: this programme is by using wiping blackboard
Point, then by having the upper ledge of teeth and lower frame and with teeth section of gear to engage, in this way when slider box horizontally slips, gear turns
Dynamic direction is always counterclockwise, and then the dextrorotation flabellum in rotation axis is driven to generate the wind for blowing to powder collection cavity, is solved existing black
Blackboard eraser cannot absorb the problem of chalk dust.
It is the optimization to basic technology scheme below:
Further, strainer is equipped at the air outlet.The strainer that exit is equipped with is while guaranteeing outlet air, moreover it is possible to keep away
Exempt to have been drawn into the chalk dust in powder collection cavity to go out from air outlet.
Further, the box body is equipped with handle.It is more convenient when using blackboard eraser wiping blackboard in this way, it avoids making
Used time chalk dust is stained with to hand.
Further, the air inlet is equipped with towards the gear cylinder in powder collection cavity.Gear cylinder can stop to come into powder collection cavity
Interior chalk dust is assembled in air inlet again, reduces the effect for absorbing chalk dust.
Further, the length of two sections of teeth is equal to teeth section of arc length.This ensure that with teeth section and a frame
Teeth engagement when, another frame there is no and with teeth section have meshing relation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of dust-proof blackboard eraser of the utility model；
Fig. 2 is the structural schematic diagram of slider box in Fig. 1.
Specific embodiment
Below by the further details of explanation of specific embodiment:
Appended drawing reference in Figure of description include: box body 1, sliding slot 2, scrubbing pad 3, slider box 4, rotation axis 5, air outlet 6,
Connecting rod 7, flabellum 8, air inlet 9, teeth 10, gear 11.
Embodiment is substantially as depicted in figs. 1 and 2: a kind of dust-proof blackboard eraser, including box body 1 and scrubbing pad 3, box body 1 are equipped with
Handle, box body 1 is interior to be equipped with sliding slot 2 and powder collection cavity, and air inlet 9 and air outlet 6 are equipped in powder collection cavity, is equipped with strainer at air outlet 6,
It is equipped at air inlet 9 towards the gear cylinder in powder collection cavity, scrubbing pad 3 is slidably connected with sliding slot 2, and scrubbing pad 3 is equipped with connecting rod 7, connection
Bar 7 is fixed with slider box 4 far from one end of scrubbing pad 3, and slider box 4 includes upper ledge, lower frame, left frame and right frame, upper ledge and lower frame
Inside is equipped with the teeth 10 of 2 glide directions arrangement along the chute, and the length of teeth 10 is equal to teeth section of arc length；Slider box 4
Interior to be equipped with gear 11, gear 11 divides for teeth section and anodontia section, and with teeth section of arc length is not more than anodontia section of arc length, with teeth section and
Teeth 10 engage, and gear 11, which extends out, rotation axis 5, and rotation axis 5 runs through air inlet 9, the one end of rotation axis 5 far from gear 11
On be evenly equipped with the dextrorotation flabellums 8 of several circumferential arrangements, dextrorotation flabellum 8 is in gear cylinder, and dextrorotation flabellum 8 is generally three pieces.
Using this programme come when wiping blackboard, hand holds the handle of box body 1, against blackboard-cleaning, at this time blackboard eraser be with
The motion profile of one similar arc-shaped is moving, when blackboard eraser moves left and right, because scrubbing pad 3 is with the sliding slot 2 in box body 1
It is slidably connected, the scrubbing pad 3 will horizontally slip, and also can with scrubbing pad 3 by the slider box 4 that connecting rod 7 is connect to drive
It horizontally slips, and because is equipped with the teeth 10 of 2 glide directions arrangement along the chute, teeth 10 and and tooth on the inside of upper ledge and lower frame
With teeth section of 11 engagement of wheel, and when engage with the teeth 10 of a frame for teeth section, another frame not with teeth section
There is meshing relation, so gear 11 just can rotate, at the end of the teeth 10 of upper ledge are engaged with teeth section, the teeth 10 of lower frame are rigid
Good to engage with teeth section, in this way when slider box 4 horizontally slips, gear 11 thus can always towards rotating counterclockwise
It drives dextrorotation flabellum 8 to rotate, and then generates and blow to the wind of powder collection cavity, wind just will drive the chalk dust that generates when wiping to powder collection cavity
Interior movement, further through the barrier effect of gear cylinder and strainer, such chalk dust will be largely collected in powder collection cavity.
Claims (5)
1. a kind of dust-proof blackboard eraser, including box body and scrubbing pad, it is characterised in that: be equipped with sliding slot and powder collection cavity, institute in the box body
It states and is equipped with air inlet and air outlet in powder collection cavity, the scrubbing pad is slidably connected with sliding slot, and the scrubbing pad is equipped with connecting rod, described
Connecting rod is fixed with slider box far from one end of scrubbing pad, and the slider box includes upper ledge, lower frame, left frame and right frame, the upper ledge
With the teeth for being equipped with glide direction arrangement along the chute on the inside of lower frame；Gear is equipped in the slider box, the gear is divided into
With teeth section and anodontia section, with teeth section of the arc length is not more than anodontia section of arc length, and described with teeth section is engaged with teeth, the tooth
Wheel extends out and has rotation axis, and the rotation axis runs through air inlet, and the rotation axis is several far from being evenly equipped on one end of gear
The dextrorotation flabellum of circumferential direction arrangement.
2. a kind of dust-proof blackboard eraser according to claim 1, it is characterised in that: be equipped with strainer at the air outlet.
3. a kind of dust-proof blackboard eraser according to claim 2, it is characterised in that: the box body is equipped with handle.
4. a kind of dust-proof blackboard eraser according to claim 3, it is characterised in that: the air inlet is equipped with towards powder collection cavity
Interior gear cylinder.
5. a kind of dust-proof blackboard eraser according to claim 4, it is characterised in that: the length of two sections of teeth has been equal to
The arc length of tooth section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821762638.9U CN209719075U (en) | 2018-10-29 | 2018-10-29 | A kind of dust-proof blackboard eraser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821762638.9U CN209719075U (en) | 2018-10-29 | 2018-10-29 | A kind of dust-proof blackboard eraser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209719075U true CN209719075U (en) | 2019-12-03 |
Family
ID=68658226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821762638.9U Expired - Fee Related CN209719075U (en) | 2018-10-29 | 2018-10-29 | A kind of dust-proof blackboard eraser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209719075U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721770A (en) * | 2021-01-27 | 2021-04-30 | 董恺颐 | Bus handle for reading |
-
2018
- 2018-10-29 CN CN201821762638.9U patent/CN209719075U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112721770A (en) * | 2021-01-27 | 2021-04-30 | 董恺颐 | Bus handle for reading |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191203 Termination date: 20201029 |