CN106827901B - The temperature control erasing apparatus that the easy stump that rubs uses - Google Patents
The temperature control erasing apparatus that the easy stump that rubs uses Download PDFInfo
- Publication number
- CN106827901B CN106827901B CN201710182825.3A CN201710182825A CN106827901B CN 106827901 B CN106827901 B CN 106827901B CN 201710182825 A CN201710182825 A CN 201710182825A CN 106827901 B CN106827901 B CN 106827901B
- Authority
- CN
- China
- Prior art keywords
- switch
- square socket
- easy
- heating resistor
- resistor film
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0043—Erasing by electronic or electrolytic means
Abstract
The temperature control erasing apparatus that the easy stump that rubs uses is related to the colour killing field of heat-sensitive ink, particularly in terms of erasing of the student with the easy stump writing that rubs.To avoid paper sheet break, technical solution is：The temperature control erasing apparatus that the easy stump that rubs uses, it is characterized in that：One power supply and two switch series connection, one is temperature detect switch (TDS), is normally closed switch, the other is power switch, is normal open switch, is usually off；Temperature detect switch (TDS) is made of a heating resistor film and a bimetal leaf, and heating resistor film produces heat, bimetal leaf disconnecting circuit when reaching the temperature of design when powering on.The temperature of design is 55 70 degrees Celsius.Beneficial effect is：Need not be rubbed the surface of paper, will not cause paper sheet break；Reduce the use of erasing rubber, save social resources；The present apparatus can be used alone, and can also be attached on the easy stump that rubs and use, can dismantle, and the economy for reaching the present apparatus uses；It is of low cost, it is easy to make, it is easy to use, it is easy to use.
Description
Technical field
In terms of the colour killing field of heat-sensitive ink, particularly erasing of the student with the easy stump writing that rubs.
Background technology
The easy stump that rubs now uses heat-sensitive ink, and when temperature is higher, its writing can disappear.Pupil is
Volume face or operation paper surface it is clean and tidy, like rub easy stump of use to be write, when needing to change, generally make
With erasing rubber, a higher temperature is reached by frictional heat, writing is disappeared.There are the problem of be：Quick friction with strength
Can just temperature be caused comparatively fast to raise, quick friction with strength is easy to cause paper sheet break.
The content of the invention
To avoid paper sheet break, the present invention designs the temperature control erasing apparatus that a kind of easy stump that rubs uses.
The present invention realizes that the technical solution that goal of the invention uses is：The temperature control erasing apparatus that the easy stump that rubs uses, its feature
It is：One power supply and two switch series connection, a switch is temp control switch, referred to as temperature detect switch (TDS), and temperature detect switch (TDS) is normal
Make and break is closed, and usually in connected state, another switch is power supply coupling cock, and abbreviation power switch, power switch is normally opened
Switch, is usually off；Temperature detect switch (TDS) is made of a heating resistor film and a bimetal leaf, and heating resistor film exists
Heat, bimetal leaf disconnecting circuit when reaching the temperature of design are produced when powering on.The temperature of design is Celsius for 55-70
Degree.
The shell of temperature control erasing apparatus is made of two sleeves, convenient for statement, referred to as upper square socket and lower square socket, on
Pass through elastic component in inner side between square socket and lower square socket（Either elastoplastic or spring leaf etc. are flexible for metal spring
Component）Connection；There is a contact of the circle sheet metal as power switch in lower end on the outside of upper square socket, on the outside of lower square socket
There is another contact of a circle sheet metal as power switch in upper end, and square socket in pushing, compression elastic piece makes outside square socket
Contact on the outside of the contact of side and lower square socket, power on switch（After removing external force, elastic component makes square socket with
Square socket separates, disconnecting power switch）.
The heating resistor film of temperature detect switch (TDS) is a thin slice, its thickness is 0.1-0.2 microns, and area is 0.5-1 square centimeters.
Heating resistor film is fixed on the outside of top sleeve inner upper end, and the outer surface of heating resistor film is apart from upper square socket
Port be 3-5mm, the port of upper square socket covers one layer of grid.
Power supply is a section dry cell or rechargeable battery, i.e., voltage is at 1.5 volts or so, and electric current can reach 1 peace, positioned at upper
In the hollow space formed on the inside of square socket and lower square socket.
Upper square socket and lower section sleeve form a cap for brush, and there is screw thread in cap for brush lower end, and the cap for brush can be threadedly attached to
Rub the upper end of easy stump.
Respectively there be one layer of nonconducting potsherd in the both sides of heating resistor film（Potsherd is non-conductor, i.e., non-conductive, this is
The prior art）, the thickness of potsherd has the circular hole of 2-3 millimeters of diameter positioned at the center of the potsherd of inner side at 0.5-1 millimeters
（Circular through hole）For bimetal leaf（Electrode）End thereof contacts heating resistor film.
The outer ledge of two-layer ceramic piece has 1 millimeter of width, the toroidal cavity of 0.05 millimeter of thickness, and two grooves are just
To 1 millimeter of formation width, annular space of the thickness at 0.1 millimeter, the copper material of one circle circular ring shape of annular space arrangement
Expect the edge as electrode contact heating resistor film.
The circumference of the upper surface of upper square socket is fixed with ball.Ball rolling friction is smaller, motion smoothing, it is possible to reduce dress
The frictional force contacted between end face and paper is put, rolling is a kind of prior art, is that by.
The beneficial effects of the invention are as follows：Most important advantage is the surface of paper of need not rubbing, therefore will not cause paper
Open breakage；The easy stump that rubs no longer needs erasing rubber, reduces the use of erasing rubber, saves social resources；The present apparatus can be independent
Use, can also be attached on the easy stump that rubs and use, become a part for the easy stump that rubs, such as the cap for brush, the existing easy stump that rubs
Cap for brush position be erasing rubber, press the device of pen core in side, therefore the upper end of the existing easy stump that rubs can make screw thread,
It is connected so as to reach the present apparatus by screw thread with the easy stump that rubs, because can dismantle, It is not necessary to which every pen is all equipped with this
Device, the economy that can reach the present apparatus use；It is of low cost, it is easy to make, it is easy to use, it is easy to use；Heating time
It is short, it can endure；Heat accumulation is less, will not skin ambustion.
Brief description of the drawings
Fig. 1 is circuit diagram；Fig. 2 is temperature detect switch (TDS) schematic diagram；Fig. 3 is device overall schematic；The connection of Fig. 4 circuits
Schematic diagram；
Wherein, 1, power supply；2nd, temperature detect switch (TDS)；3rd, power switch；4th, heating resistor film；5th, bimetal leaf；6th, upper square socket；
7th, lower square socket；8th, elastic component；9th, sheet metal.
Embodiment
Heat-sensitive ink is with the change of formula, it develops the color and the temperature of colour killing can also change.Here is Web search
A kind of parameter of the heat-sensitive ink arrived：Ink room temperature is heated to 50 DEG C of -60 DEG C of colour killings to be coloured, be cooled to subzero 5 DEG C-it is subzero
20 DEG C of colour developings, have invertibity.The specific colour killing temperature that starts is 45 DEG C or so, and complete colour killing temperature is 55 DEG C or so.Start to show
Color temperature is subzero 5 DEG C or so, and complete colour temp is subzero 20 DEG C or so.Microcapsules average fineness in ink is micro- for 2-3
Rice.
The temperature control erasing apparatus that the easy stump that rubs uses, including a power supply 1 and two switches, power supply 1 and two switch series
Connection, for convenience of two switches are distinguished, a switch is temp control switch, referred to as temperature detect switch (TDS) 2, and a switch is that power supply connects
Pass is opened up, abbreviation power switch 3, is exactly common circuit controlling switch, is a kind of prior art to power on；Temperature detect switch (TDS) is
The present invention critical piece, be made of a heating resistor film 4 and a bimetal leaf 5, heating resistor film 4 because resistance value compared with
Greatly, heat is produced when powering on to elevate the temperature, bimetal leaf disconnecting circuit when reaching the temperature of design.According to existing
Heat-sensitive ink parameter, the temperature of design is proper for 55-70 degrees Celsius.Limited according to the physiology of Human Tolerance high temperature,
There is the risk burnt to human skin at 55-70 degrees Celsius, using hedging mode：The first, by heat source（That is heating resistor film 4
Skin away from human body, the mode of similar hair dryer, i.e., set fence, heating resistor film is transferred heat to by air on the outside of heat source
Have the paper of writing, since the specific heat of air is smaller, and skin it is aqueous it is more, specific heat is larger, the hot wind short time is to skin
Burn smaller, for example the draught temperature of hair dryer is higher, but the short time generally will not skin ambustion, such as：Heating resistor film 4 is solid
It is scheduled on the outside of 6 inner upper end of square socket, the outer surface of heating resistor film 4 is 3-5mm apart from the port of upper square socket 6, on
The port of square socket 6 covers one layer of grid；Second, the heat that limitation heating resistor film 4 is accommodated, that is, reduce heating resistor film
4 area and the thickness for reducing heating resistor film 4.
The shell of temperature control erasing apparatus is made of two sleeves, convenient for statement, and one is known as upper 6, titles of square socket
For lower square socket 7, connected between upper square socket and lower square socket in inner side by elastic component 8, common elastic component is metal elastic
Spring either elastoplastic or spring leaf etc.；The lower end in the outside of upper square socket 6 have a circle sheet metal 9 as power switch 3 one
There are another contact of a circle sheet metal as power switch 3 in a contact, the upper end in the outside of lower square socket 7, square socket in pushing
6, compression elastic piece 8 makes the contact in the outside of square socket 6 and the contact in the outside of lower square socket 7, and power on switch 3；Tear open
After external force, elastic component 8 separates square socket 6 and lower square socket 7, disconnecting power switch 3.
The heating resistor film 4 of temperature detect switch (TDS) is a thin slice, its thickness is 0.1-0.2 microns, and area is 0.5-1 squares li
Rice, its volume very little, 0.1 milliliter of water are roughly equivalent to 1 volume dripped, are usually also often splashed on hand by boiling water, such as
100 degrees Celsius of water can be approached by, which cooking in pot, splashes on hand, and from thermos bottle to hot water when several drip also can often occurs and be poured on
On hand（Most of temperature of thermos bottle is at 70 degree or so）, these are generally all without great injury is brought, and the amount of essentially consisting in is not
Greatly, in addition also primary aqueous divides human body, and a small amount of high-temperature water can be cooled down rapidly.Heating resistor film belongs to metal, nature water
Thermal capacity be the largest, the thermal capacity of metal is far smaller than the thermal capacity of water, and therefore, the heating resistor film 4 of the design is stored up
The heat deposited is not more than the heat of 1 70 degree of water of drop, will not bring the injury to skin.
The foundation of characterising parameter design below：For Cr20Ni80 (Cr20% containing chromium contains nickel 80%) alloy resistance wire, its
Resistivity 1.09*10-6* meters of ohm, 0.5 joule of specific heat/（Gram * degrees Celsius）, 8 grams/cc of density, area is 0.5 square
Centimetre circular diameter be about 4 millimeters, it is assumed that round edge is an electrode, and center is an electrode, design centre electricity
A diameter of 2 millimeters of the contact point of pole, its resistance is estimated as（1.09*10-6* meters of * dr/ (2*3.14*r*d) of ohm）, wherein r
For radius, d is thickness, and 2*3.14*r*d is the area of annulus, its integration is（1.09*10-6* meters/(2*3.14 * d) * ln of ohm
(r2/r1)）Wherein r2=4 millimeter, r1=2 millimeter/2=1 millimeter, ln (r2/r1)=ln（4）=1.386, existing dry cell or
Rechargeable battery is substantially capable of providing the electric current of 1 Amps, and voltage is about lied prostrate in 1-1.5, therefore resistance takes around 1.5 Europe
Nurse, 1.09*10-6* meters of ohm/* 1.386=1.5 ohm of (2*3.14 * d), then d=0.16 micron, for so thin resistor disc,
Best mode is sandwich potsherd（Can by potsherd vacuum coating realize）, the thermal capacity one of potsherd
As use 0.84*10^3J/ (kg DEG C)（The thermal capacity of dry soil, because ceramics are generally fired by soil）Estimated.
Estimate that temperature raises the required time below：Volt/1.5 ohm=1.5 watt of power=1.5 volt * 1.5, it is assumed that ceramics
The thickness of piece is 1 millimeter, is divided into two layers, diameter is calculated according to 1cm, area=* 5 millimeters=78 square millimeters of 3.14*5 millimeters, body
78 cubic millimeters of product, for density according to 2.4 grams/cc of soil, its quality about 0.078*2.4=0.2 gram, raises 1 degree of needs
* 0.2 gram of * of heat 0.84*10^3J/ (kg DEG C)（℃）=0.168 J；The heating resistor film 4 formed for alloy resistance wire, by
In 0.5 joule of its specific heat/（Gram * degrees Celsius）Than 0.84*10^3J/ (kg DEG C)=0.84J/ (g DEG C)=0.84 joules/（Gram * is Celsius
Degree）It is small, and thickness very little, therefore can ignore, then 1.5 watts * 1 second/(0.168 J/ degree)=9 degree, i.e., it is per second to raise 9
Degree, about 20 degrees Celsius of room temperature usually, is increased to 60 degree, takes around 4-5 seconds.1.5 watts of estimation * 5 seconds for its heat/
(4.2 joules/（Gram * degree）)=1.8 gram * degree, Yi Keshui about 20 drip, and drop * 36 of the drop * of 1.8 grams of * degree=36 degree=1 is spent, room temperature to 60
Degree, about 40 degree of the temperature difference, therefore, the water that present apparatus heat accumulation is roughly equivalent to 60 degrees Celsius of 1 drop are reduced to environment temperature 20 and take the photograph
The heat of family name's degree release, therefore the injury to skin will not be caused.
Power supply 1 is a section dry cell or rechargeable battery, in the space of sleeve 6 above and the inner side of lower square socket 7.
Upper square socket 6 and lower square socket 7 form a cap for brush, and there is screw thread in cap for brush lower end, and the cap for brush can be connected through a screw thread
To the upper end for the easy stump that rubs.
The outer ledge of two-layer ceramic piece has 1 millimeter of width, toroidal cavity of the thickness at 0.05 millimeter, two grooves
In 0.1 millimeter of space, which encloses the copper material of circular ring shape as electrode for 1 millimeter of face formation width, thickness
The edge of heating resistor film 4 is contacted, makes heating resistor film 4 conductive than more uniform, so that Temperature Distribution is evenly.From the design
Electric current is seen to center flow, center current density is higher than the edge, therefore temperature is slightly higher, but since metal and ceramics are ratios
Preferable Heat Conduction Material, can ensure that temperature is substantially uniform.
Claims (1)
1. the temperature control erasing apparatus that the easy stump that rubs uses, it is characterized in that：One power supply（1）With two switch series connection, a switch
It is temp control switch, is referred to as temperature detect switch (TDS)（2）, another switch is power supply coupling cock, abbreviation power switch（3）；Temperature
Control switch is by a heating resistor film（4）With a bimetal leaf（5）Composition, heating resistor film produce heat when powering on
Amount, bimetal leaf disconnecting circuit when reaching the temperature of design；The temperature of design is 55-70 degrees Celsius；Temperature control erasing apparatus
Shell is made of two sleeves, referred to as upper square socket（6）With lower square socket（7）, in inner side between upper square socket and lower square socket
Pass through elastic component（8）Connection；Upper square socket（6）There is a circle sheet metal in the lower end in outside（9）As power switch（3）One touch
Point, lower square socket（7）There is a circle sheet metal in the upper end in outside as power switch（3）Another contact, square socket in pushing
（6）, compression elastic piece（8）Make square socket（6）The contact in outside and lower square socket（7）The contact in outside, powers on
Switch（3）；The heating resistor film of temperature detect switch (TDS)（4）For a thin slice, its thickness is 0.1-0.2 microns, and area is 0.5-1 squares li
Rice；Heating resistor film（4）It is fixed on square socket（6）The outside of inner upper end, heating resistor film（4）Outer surface apart from top
Sleeve（6）Port be 3-5mm, upper square socket（6）Port cover one layer of grid；Heating resistor film（4）Both sides respectively have one
The nonconducting potsherd of layer, the thickness of potsherd have 2-3 millimeters of diameter at 0.5-1 millimeters, positioned at the center of the potsherd of inner side
Circular hole supply bimetal leaf（5）End thereof contacts heating resistor film（4）；The outer ledge of two-layer ceramic piece have 1 millimeter of width,
Toroidal cavity of the thickness at 0.05 millimeter, two 1 millimeter of toroidal cavity face formation widths, circle of the thickness at 0.1 millimeter
Annular space, the copper material of one circle circular ring shape of annular space arrangement contact heating resistor film as electrode（4）Edge；
The circumference of the upper surface of upper square socket is fixed with ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182825.3A CN106827901B (en) | 2017-03-24 | 2017-03-24 | The temperature control erasing apparatus that the easy stump that rubs uses |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710182825.3A CN106827901B (en) | 2017-03-24 | 2017-03-24 | The temperature control erasing apparatus that the easy stump that rubs uses |
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| CN106827901A CN106827901A (en) | 2017-06-13 |
| CN106827901B true CN106827901B (en) | 2018-05-04 |
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| CN201710182825.3A Expired - Fee Related CN106827901B (en) | 2017-03-24 | 2017-03-24 | The temperature control erasing apparatus that the easy stump that rubs uses |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110450567A (en) * | 2019-09-16 | 2019-11-15 | 深圳市博瑞斯特科技有限公司 | Electronics erasing rubber with skin contact defencive function |
| CN112140778A (en) * | 2020-10-09 | 2020-12-29 | 佛山中锦微电科技有限公司 | Angle folding character-eliminating pen |
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| CN202669314U (en) * | 2012-05-29 | 2013-01-16 | 张秀英 | Electrothermal eraser |
| CN203381396U (en) * | 2013-07-01 | 2014-01-08 | 黄智贤 | Electronic type handwriting processing device |
| CN104070898A (en) * | 2014-06-27 | 2014-10-01 | 深圳市博瑞斯特科技有限公司 | Electronic eraser |
| CN204055086U (en) * | 2014-07-17 | 2014-12-31 | 苏州芸芮懿电子科技有限公司 | Handwriting eraser |
| CN204322850U (en) * | 2014-12-12 | 2015-05-13 | 周煜然 | A kind of electronics blanking interval |
| CN205159217U (en) * | 2015-10-28 | 2016-04-13 | 永州市永邦电子科技有限公司 | Temperature detect switch subassembly |
| CN105538970A (en) * | 2016-01-04 | 2016-05-04 | 高龙杰 | Electrically-heated eraser for erasable pen |
| CN105579244A (en) * | 2013-09-26 | 2016-05-11 | 泰科电子日本合同会社 | Color changing device for thermochromic ink |
| CN106313977A (en) * | 2015-06-30 | 2017-01-11 | 东亚铅笔株式会社 | Heating eraser for removing thermally changeable ink |
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2017
- 2017-03-24 CN CN201710182825.3A patent/CN106827901B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202669314U (en) * | 2012-05-29 | 2013-01-16 | 张秀英 | Electrothermal eraser |
| CN203381396U (en) * | 2013-07-01 | 2014-01-08 | 黄智贤 | Electronic type handwriting processing device |
| CN105579244A (en) * | 2013-09-26 | 2016-05-11 | 泰科电子日本合同会社 | Color changing device for thermochromic ink |
| CN104070898A (en) * | 2014-06-27 | 2014-10-01 | 深圳市博瑞斯特科技有限公司 | Electronic eraser |
| CN204055086U (en) * | 2014-07-17 | 2014-12-31 | 苏州芸芮懿电子科技有限公司 | Handwriting eraser |
| CN204322850U (en) * | 2014-12-12 | 2015-05-13 | 周煜然 | A kind of electronics blanking interval |
| CN106313977A (en) * | 2015-06-30 | 2017-01-11 | 东亚铅笔株式会社 | Heating eraser for removing thermally changeable ink |
| CN205159217U (en) * | 2015-10-28 | 2016-04-13 | 永州市永邦电子科技有限公司 | Temperature detect switch subassembly |
| CN105538970A (en) * | 2016-01-04 | 2016-05-04 | 高龙杰 | Electrically-heated eraser for erasable pen |
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| CN106827901A (en) | 2017-06-13 |
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Granted publication date: 20180504 Termination date: 20190324 |