CN108209705A - The miniature blackboard dust-collector of Wrist wearable type - Google Patents

Abstract

Present invention relates particularly to a kind of miniature blackboard dust-collectors of Wrist wearable type.This dust catcher is made of the part such as dust hood, dust collecting bin, motor fan storehouse, rear cover, battery case, wrist support wrist strap, switching group.The dust catcher is worn in the wrist for that hand for writing or erasing the board by user, and suction inlet is towards centre of the palm direction.When writing, drawing or erasing the board on blackboard, infrared induction switch detects 5 30 centimetres of front（Apart from adjustable）There is barrier in left and right（Blackboard）When this switch open, power supply is connected, motor drives flabellum rotation, dust inspiration out of dust hood that the suction of formation will be fallen down with chalk when writing, drawing or erasing the board on blackboard, cage door, dust enter in dirt filtrating screen air-flow with washing silica gel open, and dust collecting bin bottom is fallen on by the dust that dirt filtrating screen stops, by dirt filtrating screen filtered air behind motor fan storehouse, discharged from the air outlet of rear cover.When user's hand leaves blackboard, infrared induction switch is cut off the power, and fan is closed.

Description

The miniature blackboard dust-collector of Wrist wearable type

Technical field

The invention belongs to teaching equipment fields, and in particular to a kind of miniature blackboard dust-collector of Wrist wearable type.

Background technology

1st, the pollution caused by the chalk dust of classroom is more than haze, is well-known.It is although the 2nd, authorized related special Profit has more than one piece, but limited, for example number of patent application is a kind of the special of 2014101248536 entitled " black board eraser with chalk-dust collector " Profit can only solve the pollution problem to erase the board, and dust is fallen down when can not solve to write, draw（The dust to fall down when writing, drawing in fact It is few unlike the dust stayed on blackboard how many）Caused pollution.What is had is inconvenient to use, such as application No. is The patent of 2015206615828 entitled " blackboard eraser chalk powder moment clarifier ", first it is complicated, of high cost, unfavorable In promotion and popularization.Second, the pipe that it suspended on was not only inconvenient to use, but also can block the sight of student.Third, it is more main, It is also the dust that cannot solve to fall down during writing.Some is inapplicable, big and improper, for example number of patent application is It is mostly complicated not say that its n air outlet has first, concentrates the talk of its " its for the patent of 2015204190490 entitled " classroom dust collectors " The outer perimeter of shape and blackboard is adapted " this point is exactly big dust catcher as blackboard simply, because without practicality Property.

Invention content

Goal of the invention：The present invention will not only siphon away the dust fallen when erasing the board, and can also siphon away teacher and be existed with chalk The dust fallen down when writing, drawing on blackboard avoids the health to Faculty and Students due to dust pollution from bringing to the maximum extent Influence.

Present invention detailed description：Present invention relates particularly to a kind of miniature blackboard dust-collectors of Wrist wearable type.

Structure：The miniature blackboard dust-collector of Wrist wearable type by silica gel dust hood, dust collecting bin, motor fan storehouse, rear cover, battery case, The part such as wrist support wrist strap, switching group forms.With having two panels silica gel in silica gel dust hood cage door, ground cage door have the work(of only import but no export Energy.This function is that the folding of by two panels cage door is realized.After motor fan is opened, two panels silica gel cage door in suction It is automatically opened under effect；When motor fan is stopped, ground cage door is automatically closed under the action of itself silica gel elastic force, to prevent Only the dust in dust collecting bin is leaked out out of dust hood.The dust filtering that the net being made by chemical fibre or filament is done is equipped in dust collecting bin Bag.Sack is pricked by flexible finer wire string into cast, and wire loop is stuck in the card slot of dust collecting bin shell, with anti-dropout.Horse There are motor and fan in up to fan storehouse.There are replaceable rechargeable battery set, opening battery case lid, that is, replaceable in battery case.Switch Group is connected in series by power switch, infrared induction switch and position sensor switch, any one switch disconnects, and micro motor is not It can start.

Operation principle：It turns on the power switch, in the miniature blackboard dust-collector of Wrist wearable type from horizontal positioned suction inlet towards before just Side is placed to vertical in 90 degree or so of the section of suction inlet upward, and direction switch is opened, immediately ahead of micro-cleaner Infrared induction switch detect front 5-30 centimetres（Apart from adjustable）There is barrier in left and right（Blackboard）When this switch open, motor Power supply is connected, and micro motor drives flabellum rotation, and the suction of formation will be fallen down with chalk when writing, drawing or erasing the board on blackboard Dust inspiration out of dust hood, cage door, dust enter in dirt filtrating screen air-flow with washing silica gel open, the dust stopped by dirt filtrating screen Dust collecting bin bottom is fallen on, by dirt filtrating screen filtered air behind motor fan storehouse, is discharged from the air outlet of rear cover.Leave blackboard When, infrared induction switch is automatically closed, and motor power is cut off at this time, and fan is closed.Arm is put down i.e. at the dust catcher Side except from horizontal positioned suction inlet towards front to vertically 90 degree or so of the section of placement suction inlet upward During position, position sensor switch is closed.The purpose of direction switch is set, is when user's arm down, even if the suction When thering is barrier to cause the infrared induction switch to connect before dirt device, also because position sensor switch is closed without opening the dust suction Device, so as to prevent error starting.

Operating method：

The miniature blackboard dust-collector of Wrist wearable type is kept flat, suction inlet 102 is towards front, and wrist support 112 is upward.It will write, draw or erase the board The centre of the palm downward, wrist is lain in wrist support 112, and two 114 bandages of Velcro hair side are won over and are pressed onto on the outside of wrist support In Velcro hook surface 115.Turn on the power switch 104.When user on blackboard when writing, drawing or erasing the board, micro-cleaner is certainly It is dynamic to start.Dust catcher wears the underface of its that hand in user at this time, and suction inlet is against blackboard and raises 30-70 upward Spend angle（I.e. micro-cleaner axle center of motor line forms the angle of 30-70 degree with ground level line.The angle because user's arm with The difference of the angle of blackboard and it is different）, the dust inspiration dust catcher that will can just write, draw or erase the board fallen down.When using When person's hand leaves blackboard, micro-cleaner is automatically closed.

Advantageous effect：1st, ensure the instantaneity of removing dust pollution.That is do not have etc. when dust generates fall just by It siphons away, prevents the generation of pollution to the maximum extent, reduce injury of the dust to human body.2nd, it is worn in wrist, small and exquisite, weight Amount is light, and user wears free of a burden.3rd, Velcro is fixed, and user's one hand can wear or remove.4th, it is simple in structure, it is at low cost, It is easy to popularize.Even if it will not start when touching object when the 5th, user puts down arm before micro-cleaner.6th, it fits Close various postures when teacher writes, draws.7th, it will not stop the sight of student.8th, cage door is configured, dust will not fall from suction inlet Out.9th, before making the present invention, dust catcher is worn in wrist by nobody, thus the present invention has novelty and creativeness.

Description of the drawings：

Fig. 1 is appearance diagram.101 silica gel dust hoods.102 suction inlets.103 dust collecting bins.104 power switches.105 motor fans Storehouse.106 rear covers.107 air outlets.108 charging battery cartridges.109 battery case lids.110 infrared induction switch.111 inductive switch boxes, Built-in infrared induction switch and position sensor switch.112 wrist supports.113 wrist support support plates.114 Velcro bandage hair sides.115 is solid The Velcro hook surface being scheduled on the outside of wrist support；

Internal structure schematic diagram when Fig. 2 is dust suction.201 silica gel dust hoods.202 ground cage doors.203 baffles.204 dust filtering network interface cards Slot.205 fix the wire loop of dirt filtrating screen.206 dust collecting bins.207 dirt filtrating screens.208 motor fan storehouses.209 flabellums.210 motors. 211 air outlets；

Internal structure schematic diagram when Fig. 3 is no dust suction.The 301 ground cage doors being in off state.

Specific embodiment：

1. silica gel dust hood 101 is sleeved on dust collecting bin 103, dust collecting bin connects together with motor fan storehouse 105, and rear cover 106 is screwed in On motor fan storehouse 105.Fixed charging battery cartridge 108 and inductive switch box 111 above dust collecting bin and motor fan storehouse, then on The fixed wrist support 112 in face；

2. wrist support 112 is made of wrist support support plate 113, Velcro bandage hair side 114, Velcro hook surface 115 etc.；

3. the use upper lip of silica gel dust hood 201 is short, the design of lower lip length；

With silica gel 4. cage door 202, baffle 203 are integrally formed silica gel dust hood 201；

It is that the dust of dust collecting bin when preventing dust suction mouth down slides to ground cage door 5. setting the purpose of baffle 203；

6. dirt filtrating screen has wire loop 205 to be formed in the dirt filtrating screen card slot 204 that annular bayonet is stuck at dust collecting bin Hatch Opening, anti-anti-avulsion It falls；

7. when needing to clear up bag dust filter, silica gel dust hood 201 is pulled up, extraction bag dust filter 207 can outwell dust accumulation；

8. the motor and battery that can be worked long hours must be selected；

9. by replaceable rechargeable battery powered.It is recommended that rechargeable battery is for three pieces and numbers：1. a number battery is used, 2. number electricity Pond is being charged, and 3. number battery is for use；

10. lower class hour clears up bag dust filter in time.

Claims (6)

1. a kind of miniature blackboard dust-collector of Wrist wearable type, it is characterized in that：When writing with chalk, drawing or erasing the board on blackboard, it is worn over this In wrist by dust hood, dust collecting bin, motor fan storehouse, rear cover, battery case, wrist support wrist strap, switching group etc. part form it is miniature Micro motor in dust catcher drives the suction that flabellum is formed that the dust fallen is entered dust collecting bin, powder after suction inlet sucking Dirt is stayed in bag dust filter, and air, by motor fan storehouse, is discharged after bag dust filter filters from air outlet.

2. a kind of miniature blackboard dust-collector of Wrist wearable type according to claim 1, it is characterised in that：Motor by power switch, Infrared induction switch, position sensor switch series control.

3. a kind of miniature blackboard dust-collector of Wrist wearable type according to claim 1, it is characterised in that：When infrared induction switch is examined Front being measured when having object i.e. close to blackboard, this switch is opened, and during separate blackboard, this switch is automatically closed.

4. a kind of miniature blackboard dust-collector of Wrist wearable type according to claim 1, it is characterised in that：Feel when position sensor switchs Know that micro-cleaner is horizontal positioned or suction inlet upward when, this switch is opened, this switch of other orientation is to close.

5. a kind of miniature blackboard dust-collector of Wrist wearable type according to claim 1, it is characterised in that：Using the ground of only import but no export Design as cage entrance, dust will not be poured out when micro-cleaner is put upside down.

6. a kind of miniature blackboard dust-collector of Wrist wearable type according to claim 1, it is characterised in that：Dust hood uses upper lip Short, lower lip length design.