CN206264647U - A kind of electrostatic dust prevention chalk device - Google Patents
A kind of electrostatic dust prevention chalk device Download PDFInfo
- Publication number
- CN206264647U CN206264647U CN201621104266.1U CN201621104266U CN206264647U CN 206264647 U CN206264647 U CN 206264647U CN 201621104266 U CN201621104266 U CN 201621104266U CN 206264647 U CN206264647 U CN 206264647U
- Authority
- CN
- China
- Prior art keywords
- chalk
- sleeve
- pushing block
- dust prevention
- accommodating cavity
- 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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Abstract
The utility model discloses a kind of electrostatic dust prevention chalk device, including sleeve, the front opening of sleeve simultaneously extends one accommodating cavity of formation along its length；Sleeve is insulator, and pushing block, power supply, electrostatic generator and pressure sensor are additionally provided with sleeve；The barrel of sleeve is additionally provided with elongated hole, and the both sides cell wall of elongated hole is provided with some sawtooth；Pushing block is constituted with accommodating cavity and is flexibly connected, pushing block has the push rod stretched out outside sleeve through elongated hole, push rod is provided with the elastic pressure arm extended along sleeve axis direction, and the end of elastic pressure arm is provided with the connecting pole for extending internally, connecting pole be provided with stretched out to both sides and with the fixture block of sawtooth clamping；Pushing block dorsad harness motion can be prevented when fixture block is with sawtooth clamping, can release clamping by compression elasticity pressure arm makes pushing block dorsad harness motion.The utility model has the advantage that：Chalk dust is set more to be attached on blackboard by electrostatic interaction, it is to avoid airborne dust.
Description
Technical field
The utility model belongs to writing teaching tool technical field, and in particular to a kind of electrostatic dust prevention chalk device.
Background technology
Chalk since invention, because of the essential product as industries such as classrooms the advantages of its is practical, inexpensive.But in book
During writing, the chalk dust major part that chalk splits away off is attached on blackboard, and also sub-fraction is flown away in atmosphere, long and
It, not only causes certain contamination, main meeting to cause certain damage to the health of Faculty and Students to the object in classroom long
Evil, makes the pulmonary emphysema incidence of disease of teacher this industry times over usual crowd.Attention increasingly with people to health problem, this
One problems demand is solved.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided a kind of electrostatic dust prevention chalk device, is led to
Crossing electrostatic interaction makes chalk dust more be attached on blackboard, it is to avoid airborne dust.
To solve prior art problem, the utility model discloses a kind of electrostatic dust prevention chalk device, including sleeve, sleeve
Front opening and extend along its length and form one and be used to accommodate the accommodating cavity of chalk；Sleeve is also to be set in insulator, sleeve
There are pushing block, power supply, electrostatic generator and pressure sensor；The barrel of sleeve is additionally provided with the elongated hole for extending along its length, elongated hole
Both sides cell wall be provided with some sawtooth being distributed along its length；Pushing block is constituted with accommodating cavity and is flexibly connected, and pushing block has to be worn
The push rod that elongated hole is stretched out outside sleeve is crossed, push rod is provided with the elastic pressure arm extended along sleeve axis direction, and the end of elastic pressure arm sets
Have a connecting pole for extending internally, connecting pole be provided with stretched out to both sides and with the fixture block of sawtooth clamping；Energy when fixture block is with sawtooth clamping
Pushing block dorsad harness motion is enough prevented, can release clamping by compression elasticity pressure arm makes pushing block dorsad harness motion；Pressure sensor
It is arranged on the front end face of pushing block, can abut pressure sensor and produce after chalk insertion accommodating cavity makes it send signal, pressure
The output end of sensor is electrically connected with the input of power supply so that signal control power supply opening, output end and the electrostatic of power supply are sent out
The input electrical connection of raw device, the output end of electrostatic generator is electrically connected with chalk.
Further, also including the interior gum cover for preventing chalk from sliding, the internal diameter of interior gum cover is slightly less than the external diameter of chalk, interior glue
It is set in accommodating cavity, the flange that gum cover is deviate from from accommodating cavity in preventing is provided with the opening of sleeve.
Further, interior gum cover is a pair of arcuation lamellar bodies, and arcuation lamellar body is opposed to be fixed in accommodating cavity.
Further, also including indicator lamp, indicator lamp is arranged on the outer wall of sleeve, indicator lamp and power electric connection so as to
Show the electricity of power supply.
Further, also including being arranged on the outer gum cover of sleeve outer wall.
Further, the front end face of pushing block is provided with the receiving slit of a reception chalk end, and receiving slit is provided with installation pressure and passes
The mounting groove of sensor.
Further, also including metallic gasket, metallic gasket is nested in receiving slit the end for receiving chalk, metal
Pad has the recess being nested in mounting groove, and pressure sensor is arranged in recess；Electrostatic generator passes through wire and metal
Pad is electrically connected.
Further, power supply includes rechargeable battery.
Further, indicator lamp is LED.
The utility model has the advantage that：Chalk dust is set more to be attached on blackboard by electrostatic interaction, it is to avoid
Airborne dust.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the invention；
Fig. 2 is the partial enlarged drawing at A in embodiment illustrated in fig. 1；
Fig. 3 is embodiment illustrated in fig. 1 structure sectional view；
Fig. 4 is the partial enlarged drawing at B in embodiment illustrated in fig. 3；
Fig. 5 is the sectional view at C-C in embodiment illustrated in fig. 3；
Fig. 6 is the circuit connection diagram of embodiment illustrated in fig. 1.
Reference：
10 sleeves；10a elongated holes；10b sawtooth；10c flanges；10d accommodating cavities；
20 pushing blocks；20a push rods；20b elasticity pressure arms；20c connecting poles；20d fixture blocks；
30 pressure sensors；Gum cover in 40；50 indicator lamps；60 metallic gaskets；100 chalks.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.Following examples are only used for clearly illustrating this
The technical scheme of utility model, and protection domain of the present utility model can not be limited with this.
As shown in Figures 1 to 6, the utility model discloses a kind of device of electrostatic dust prevention chalk 100, including sleeve 10, sleeve
10 front opening simultaneously extends formation one for accommodating the accommodating cavity 10d of chalk 100 along its length.Sleeve 10 is insulator,
Pushing block 20, power supply, electrostatic generator and pressure sensor 30 are additionally provided with sleeve 10.The barrel of sleeve 10 is additionally provided with along length side
To the elongated hole 10a for extending, the both sides cell wall of elongated hole 10a is provided with some sawtooth 10b being distributed along its length.Pushing block 20 and appearance
Put chamber 10d and constitute flexible connection, there is pushing block 20 the push rod 20a stretched out outside sleeve 10 through elongated hole 10a, push rod 20a to be provided with edge
The elastic pressure arm 20b that the axis direction of sleeve 10 extends, the end of elastic pressure arm 20b is provided with the connecting pole 20c for extending internally, and connects
Post 20c be provided with stretched out to both sides and with the fixture block 20d of sawtooth 10b clampings.Can prevent to push away when fixture block 20d is with sawtooth 10b clampings
The dorsad harness motion of block 20, applying a directed force F towards sleeve axis to the front end of elastic pressure arm 20b can release clamping
Make the dorsad harness motion of pushing block 20.Pressure sensor 30 is arranged on the front end face of pushing block 20, the insertion accommodating cavity of chalk 100 10d
After can abut pressure sensor 30 produce it is sent signal, the output end of pressure sensor 30 is electrically connected with the input of power supply
Connect so that signal control power supply is opened, the output end of power supply electrically connects with the input of electrostatic generator, electrostatic generator
Output end is electrically connected with chalk 100.When being write, pressure sensor 30 is subject to the pressure activated power supply of chalk 100 to open
Opening makes electrostatic generator produce electrostatic interaction in chalk 100, under electrostatic interaction, cannot be attached on blackboard originally and float
Chalk dust in air can be also attached on blackboard so as to reduce airborne dust.And by the fixture block 20d on pushing block 20 by pushing block 20
It is adjustable to be fixed in sleeve 10, pushing block 20 is adjusted in accommodating cavity 10d as chalk 100 gradually shortens in use
In fixed position, strengthen practicality.
Preferably, also including the interior gum cover 40 for preventing chalk 100 from sliding, the internal diameter of interior gum cover 40 is slightly less than chalk
100 external diameter so that the frictional force between chalk and interior gum cover 40 is not too large and avoids pressure sensor from being constantly in work
State.For the selection of both internal diameters, those skilled in the art can be determined according to actual needs, therefore not repeat specifically
And restriction.Interior gum cover 40 is arranged in accommodating cavity 10d, be provided with the opening of sleeve 10 prevention in gum cover 40 from accommodating cavity 10d
The flange 10c of abjection.This have the advantage that, frictional force during by being set between interior gum cover 40 and chalk can make powder
Pen 100 is firmly housed in accommodating cavity 10d, and can also be protruding under the regulation of pushing block 20.It is interior as more specifically scheme
Gum cover is a pair of arcuation lamellar bodies, and arcuation lamellar body is opposed to be fixed in the accommodating cavity.This have the advantage that, can preferably consolidate
Determine hexagon chalk, and reduce the use of material.
Preferably, also including indicator lamp 50, indicator lamp 50 is LED, and indicator lamp 50 is arranged on the outer of sleeve 10
On wall, indicator lamp 50 and power electric connection are so as to show the electricity of power supply.This have the advantage that, more easily informing makes
User's electricity, also has certain decline simultaneously for the loss amount of chalk 100, more economizes on resources, to ensure that it can be more preferable
Suitable for the occasions such as teacher, more healthy green.
Preferably, also including being arranged on the outer gum cover of the outer wall of sleeve 10.This have the advantage that, lifting is write
When holding sense, make it more affine comfortable.
Preferably, the front end face of pushing block 20 is provided with the receiving slit of the end of a reception chalk 100, and receiving slit is provided with peace
Fill the mounting groove of pressure sensor 30.This have the advantage that, chalk 100 can be preferably fixed, prevent because fixation is improper
Produce and loosen and influence is write.Used as more specifically scheme, also including metallic gasket, metallic gasket 60 is nested in the receiving slit
In for receiving the end of chalk, the metallic gasket has the recess being nested in the mounting groove, the pressure sensor
It is arranged in the recess；The electrostatic generator is electrically connected by wire with the metallic gasket.This have the advantage that,
On the one hand metallic gasket can play a part of to receive fixed chalk, the electrostatic charge energy that electrostatic generator on the other hand can be made to produce
Reach quick and uniformly conduct on chalk, so as to further improve the degree of adhesion of chalk dust.
Preferably, power supply includes rechargeable battery.This have the advantage that, battery can be recycled, so that
More environmental protection.
The above is only preferred embodiment of the present utility model, it is noted that for the common skill of the art
For art personnel, on the premise of the utility model know-why is not departed from, some improvement and deformation can also be made, these change
Enter and deform also to should be regarded as protection domain of the present utility model.
Claims (9)
1. a kind of electrostatic dust prevention chalk device, including sleeve, the front opening of the sleeve simultaneously extends formation one along its length
Accommodating cavity for accommodating chalk；It is characterized in that：The sleeve is insulator, and pushing block, power supply, quiet is additionally provided with the sleeve
Electric generator and pressure sensor；The barrel of the sleeve is additionally provided with the elongated hole for extending along its length, the both sides of the elongated hole
Cell wall is provided with some sawtooth being distributed along its length；The pushing block is constituted with the accommodating cavity and is flexibly connected, the pushing block
With the push rod stretched out outside sleeve through the elongated hole, the push rod is provided with the elastic pressure arm extended along sleeve axis direction, institute
The end for stating elastic pressure arm is provided with the connecting pole for extending internally, the connecting pole be provided with stretched out to both sides and with the sawtooth clamping
Fixture block；The pushing block dorsad harness motion can be prevented when the fixture block is with the sawtooth clamping, the elasticity is pressed
Pressure arm can release clamping enables the pushing block dorsad harness motion；The pressure sensor is arranged on the pushing block
On front end face, can abut the pressure sensor and produce after the chalk insertion accommodating cavity makes it send signal, described
The output end of pressure sensor is electrically connected with the input of the power supply so that the signal control power supply opening, described
The output end of power supply is electrically connected with the input of the electrostatic generator, and the output end of the electrostatic generator and the chalk are electric
Connection.
2. a kind of electrostatic dust prevention chalk device according to claim 1, it is characterised in that：Also include preventing what chalk from sliding
Interior gum cover, the internal diameter of the interior gum cover is slightly less than the external diameter of chalk, and the interior gum cover is arranged in the accommodating cavity, the sleeve
Opening at be provided with the flange for preventing the interior gum cover from deviating from from the accommodating cavity.
3. a kind of electrostatic dust prevention chalk device according to claim 2, it is characterised in that：The interior gum cover is a pair of arcuations
Lamellar body, the arcuation lamellar body is opposed to be fixed in the accommodating cavity.
4. a kind of electrostatic dust prevention chalk device according to claim 1, it is characterised in that：Also include indicator lamp, the finger
Show that lamp is arranged on the outer wall of the sleeve, the indicator lamp and the power electric connection are so as to show the electricity of the power supply.
5. a kind of electrostatic dust prevention chalk device according to claim 4, it is characterised in that：The indicator lamp is LED.
6. a kind of electrostatic dust prevention chalk device according to claim 1, it is characterised in that：Also include being arranged on the sleeve
The outer gum cover of outer wall.
7. a kind of electrostatic dust prevention chalk device according to claim 1, it is characterised in that：The front end face of the pushing block is provided with
One receiving slit for receiving the chalk end, the receiving slit is provided with the mounting groove for installing the pressure sensor.
8. a kind of electrostatic dust prevention chalk device according to claim 7, it is characterised in that：Also include metallic gasket, it is described
Metallic gasket is nested in the receiving slit end for receiving chalk, and the metallic gasket has and is nested in the mounting groove
In recess, the pressure sensor is arranged in the recess；The electrostatic generator passes through wire and the metallic gasket
Electrical connection.
9. a kind of electrostatic dust prevention chalk device according to claim 1, it is characterised in that：The power supply includes the electricity that charges
Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621104266.1U CN206264647U (en) | 2016-10-09 | 2016-10-09 | A kind of electrostatic dust prevention chalk device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621104266.1U CN206264647U (en) | 2016-10-09 | 2016-10-09 | A kind of electrostatic dust prevention chalk device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206264647U true CN206264647U (en) | 2017-06-20 |
Family
ID=59037364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621104266.1U Expired - Fee Related CN206264647U (en) | 2016-10-09 | 2016-10-09 | A kind of electrostatic dust prevention chalk device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206264647U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801550A (en) * | 2019-03-25 | 2019-05-24 | 上海工程技术大学 | A kind of All-in-One double leval jib teaching mould |
-
2016
- 2016-10-09 CN CN201621104266.1U patent/CN206264647U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109801550A (en) * | 2019-03-25 | 2019-05-24 | 上海工程技术大学 | A kind of All-in-One double leval jib teaching mould |
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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: 20170620 Termination date: 20211009 |