CN109605987A - A kind of spontaneous heating thermal handwriting and its assemble method - Google Patents

A kind of spontaneous heating thermal handwriting and its assemble method Download PDF

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Publication number
CN109605987A
CN109605987A CN201811374022.9A CN201811374022A CN109605987A CN 109605987 A CN109605987 A CN 109605987A CN 201811374022 A CN201811374022 A CN 201811374022A CN 109605987 A CN109605987 A CN 109605987A
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CN
China
Prior art keywords
module
power supply
penholder
charge
heating
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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.)
Pending
Application number
CN201811374022.9A
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Chinese (zh)
Inventor
谢伟广
曾文
刘彭义
周琦
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Jinan University
University of Jinan
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Jinan University
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Filing date
Publication date
Application filed by Jinan University filed Critical Jinan University
Priority to CN201811374022.9A priority Critical patent/CN109605987A/en
Publication of CN109605987A publication Critical patent/CN109605987A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K29/00Combinations of writing implements with other articles

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  • Pens And Brushes (AREA)

Abstract

The invention belongs to writing pencil field, it is related to a kind of spontaneous heating thermal handwriting and its assemble method.Pen havnig function of warming hand includes a shell, heating circuit system and pen core.Heating circuit system includes heating module, power supply module and charge and discharge protecting module; power supply module provides power supply for heating module; the fever tablet of heating module is set to generate heat; the positive and negative anodes of power input interface in charge and discharge protecting module are correspondingly connected with the positive and negative anodes of power supply module; the fever plate electrode of power output interface connection heating module in charge and discharge protecting module, fever tablet generates heat after energization.Heating circuit system can provide the functions such as charging, power supply, circuit protection and heat production to writing pencil, thus realize cold snap writing pencil can spontaneous heating warm hand health care, improve the comfort level write.The present invention can improve people and write and frostbite hand problem in severe cold season, have many advantages, such as simple structure, snugness, safe and reliable and cheap.

Description

A kind of spontaneous heating thermal handwriting and its assemble method
Technical field
The invention belongs to writing pencil field, it is related to a kind of spontaneous heating thermal handwriting and its assemble method.
Background technique
With the raising that people require quality of life and comfort level, many articles for daily use both increase heating in winter and protect Temperature function, such as USB warming mouse pad, Caloritic clothing, Heating gloves, hand warmer heat generating and retention product, are constantly subjected to vast disappear The heat of the person of expense is held in both hands.The rise of these far infrareds is primarily due to autumn and winter weather and turns cold, and especially in the north, weather is cold Cold, people often will appear the diseases such as rheumatalgia, arthritis, so that it is desirable to many tools heat generating and retention function in winter Can, thus develop safely and effectively, carrying portable, quantity of heat production are big and are attached to the heat-generating article of healthcare function and have broad prospects. Writing pencil writes as one kind, marks, drawing tool, is one of people's daily life, the essential tool of work;However, It is greatly uncomfortable using meeting when writing pencil since weather cold finger is numb with cold in autumn and winter, and worn thermal glove not side Just it writes.How cold winter also can it is comfortable, be convenient to use writing pencil work and study, be one very there is application before The research contents of scape and practical value.
Summary of the invention
To solve the above problems, the present invention proposes a kind of spontaneous heating thermal handwriting, it is existing by being transformed using electrocaloric effect Writing pencil makes writing pencil have spontaneous heat function, solve winter due to weather cold freeze hand and cannot comfortably use writing pencil The problem of, realize writing pencil spontaneous heating warm hand function, there is certain health-care effect, even if in cold winter, also can it is comfortable, It is convenient to use writing pencil work and study.The present invention can improve people and write and frostbite hand problem in severe cold season, and have Simple structure, snugness, it is safe and reliable and cheap the advantages that.
The present invention also proposes a kind of assemble method of spontaneous heating thermal handwriting.
Pen havnig function of warming hand of the present invention adopts the following technical scheme that realization: a kind of spontaneous heating thermal handwriting, including shell, heating circuit system System and pen core;Heating circuit system includes heating module, power supply module and charge and discharge protecting module, and power supply module is heating module There is provided power supply, so that the fever tablet of heating module is generated heat, the power input interface in charge and discharge protecting module it is positive and negative Pole is correspondingly connected with the positive and negative anodes of power supply module, the fever tablet of the power output interface connection heating module in charge and discharge protecting module Electrode.
Preferably, a shell includes pen tip lid, penholder and rear cover;Pen tip lid, penholder and a rear cover are separate removable Component, pen tip lid and penholder are connected through a screw thread, and are convenient for changing pen core;Rear cover is penholder top closure, interior to be equipped with charge and discharge The opening of the charging interface of protective module, a rear cover are connected through a screw thread at the top of penholder.
Preferably, penholder is that streamline is cylindrical, interior to be equipped with pen core rest area, heating module rest area, power supply module placement Area and charge and discharge protecting module rest area;It is additionally provided with power switch opening and charging indicator light opening.
Preferably, charge and discharge protecting module includes one piece of integrated circuit board and connecting wire, is equipped with IC in integrated circuit board Chip is additionally provided with charging interface, power input interface, power supply output, it can be achieved that power supply overload, overcurrent protection in integrated circuit board Interface and charged state display lamp are realized to power supply charge and discharge and charged state display function;Power supply module include rechargeable, Power switch and its connection circuit, provide required power supply for heating module;Heating module includes fever tablet and connecting wire, fever Piece is radiation fever, has the characteristics that safety, health care.
The assemble method of pen havnig function of warming hand of the present invention adopts the following technical scheme that realization: a kind of assembling side of spontaneous heating thermal handwriting Method, comprising the following steps:
The fever tablet of heating module is rolled into barrel-shaped, is put into penholder internal heat generation module rest area;
The rechargeable of power supply module is placed in power supply module rest area in penholder;
Charge and discharge protecting module is placed in charge and discharge protecting module rest area in penholder, filling in charge and discharge protecting module Electricity condition display lamp should be directed at the opening of the charged state display lamp on penholder shell;
The power switch of power supply module is placed in the opening of the power switch on penholder;
It will be sealed at the top of penholder with a rear cover, the charging interface that the charging interface on charge and discharge protecting module covers after pen Opening expose;
Pen core is put into pen core rest area from penholder lower port, screws on pen tip lid.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1, the present invention reequips existing writing pencil, and heating module, power supply module, charge and discharge protecting module is added, and realizes Writing pencil Self-heating warming function.
2, the writing pencil appearance for the heatable warm hand that the present invention designs and size and common writing pencil are almost the same, do not influence It writes, is adapted to common Neutral ball-point for ball-point pen, is convenient for changing pen core.
3, the present invention uses carbon fiber heating material, and electrothermal calefactive rate is fast, and heating temperature is suitable for having certain health care functions.
4, the present invention is internal is implanted into power supply module;It can be used without external power supply, it is convenient, practical.
5, implantation circuit protective module of the present invention, entire hardware circuit are safe and reliable.
To sum up, spontaneous heating thermal handwriting of the invention can realize write, security heating, the functions such as charging, have it is beautiful, The advantages that convenient, practical, safe, can improve the problem of people freeze hand due to winter cold is write using common writing pencil.
Detailed description of the invention
Fig. 1 is the shell structure schematic diagram of spontaneous heating thermal handwriting in one embodiment of the invention;
Fig. 2 is the structural schematic diagram of heating circuit system in one embodiment of the invention;
Fig. 3 is the heating effect temperature-time curve figure of spontaneous heating thermal handwriting in one embodiment of the invention;
Wherein, 1- pen tip lid;2- pen core rest area;3- penholder inner casing;4- heating module rest area;5- penholder shell;6- Power supply module rest area;7- charge and discharge protecting module rest area;8- charged state display lamp opening;9- power switch opening;10- Rear cover;11- charging interface opening;12- fever tablet;13- fever plate electrode;14- connecting wire;15- power switch;16- electricity Source input interface;17- power output interface;18- charging interface;19- power positive cathode;20- power supply;21- charged state is shown Lamp;22- integrated circuit board.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited In this.
A kind of spontaneous heating thermal handwriting, including shell, heating circuit system and pen core.Heating circuit system includes fever mould Block, power supply module and charge and discharge protecting module, power supply module provide power supply for heating module, enable the fever tablet of heating module Heat is generated, charge and discharge protecting module realizes charge and discharge and route guarantee effect, and the power input in charge and discharge protecting module connects Mouth positive and negative anodes are correspondingly connected with power supply module lithium battery positive and negative anodes, the power output interface connection fever mould in charge and discharge protecting module The carbon fiber far infrared fever plate electrode of block, after energization, fever tablet generates heat.Heating circuit system can be provided to writing pencil The functions such as charging, power supply, circuit protection and heat production, thus realize cold snap writing pencil can spontaneous heating warm hand health care, Improve the comfort level write.
The working principle of spontaneous heating thermal handwriting of the invention is to utilize electrocaloric effect (i.e. Joule's law);Joule's law is quantitative Illustrate to conduct the law that electric current converts electrical energy into thermal energy, its calculation formula is Q=I2Rt;Q is heat in formula, and I is conduction electricity Stream, R are heating sheet resistance, and t is the time.
In order to facilitate place heating circuit system, in the present embodiment, shell as shown in Figure 1, include pen tip lid 1, penholder with And rear cover 10;Pen tip lid 1, penholder and rear cover 10 are that separate removable component, pen tip lid 1 and penholder are connected by screw thread It connects, is convenient for changing pen core;Rear cover is penholder top closure, the interior opening equipped with charging interface, and a rear cover is connected through a screw thread At the top of penholder.
Penholder is that streamline is cylindrical, interior to be equipped with pen core rest area, heating module rest area, power supply module rest area and fill Discharge prevention module rest area is additionally provided with the opening of power switch and the opening of charged state display lamp.Specifically: pen It is equipped with hollow out cylinder inner casing 3 inside bar lower end, is pen core rest area 2, is set between 2 shell of pen core rest area and penholder shell 5 There is heating module rest area 4;Cylindrical hollowed out area is power supply module rest area 6 in the middle part of penholder;The rectangular body region of penholder upper section For charge and discharge protecting module rest area 7, while the region penholder shell is equipped with charged state display lamp opening 8 and power switch is opened Mouth 9;It is sealed at the top of penholder by rear cover 10, charging interface opening 11 is equipped at the top of rear cover.
Spontaneous heating thermal handwriting heat-generating system as shown in Fig. 2, charge and discharge protecting module include one block of micro integrated circuit plate and Connecting wire, integrated circuit board is equipped with IC chip, it can be achieved that power supply overload, overcurrent protection, interior to be equipped with charging interface, power input Interface, power output interface and charged state display lamp are realized to power supply charge and discharge and charged state display function;Power supply mould Block includes rechargeable, power switch and its connection circuit, provides required power supply for heating module;Heating module includes fever tablet And connecting wire, fever tablet are radiation fever, have the characteristics that safety, health care.
In the present embodiment, charge and discharge protecting module includes one piece of long 27mm, width 17mm, the cuboid collection with a thickness of 1.5mm At circuit board 22, integrated circuit board 22 includes the electronic components such as master control IC, I/D Memory and resistance, capacitor, can determine whether to generate heat Circuit system whether normal operation;Integrated circuit board 22 is equipped with power output 17, power inlet 16 and micro USB and fills Electrical interface 18 is additionally provided with charged state display lamp 21;Charging can be provided for heating circuit system, charged state is shown and is generated heat Circuit system work is the functions such as overload protection.
Power supply module includes rechargeable 20, power switch 15 and connecting wire 14, and the positive and negative anodes 19 of rechargeable are logical The power input interface 16 that connecting wire 14 is correspondingly connected with the charge and discharge protecting module is crossed, the setting of power switch 15 is led in connection On line 14;It can be charged to rechargeable 20 by the micro USB charging interface 18;Rechargeable 20 includes but unlimited In 10440 lithium batteries, rechargeable preferred size is R=10mm, the cylindrical body of H=44mm, and rated capacity generally exists Between 320mAh-1000mAh, output voltage 3.7V;The preferred diameter of connecting wire 14 is the enameled wire of 0.1mm.
Heating module includes fever tablet 12 and connecting wire 14, and fever tablet 12 is connected to charge and discharge by the conducting wire 14 and protects Protect the power output interface 17 of module;It is closed power switch 15, fever tablet, which is powered, can produce heat;The preferred carbon fiber of fever tablet 12 Infrared heating piece is tieed up, carbon fiber heating piece is passed through 3.7V voltage having a size of 25 × 40mm flexibility fever tablet, and temperature can maintain 63 DEG C or so, fever tablet 12 has many advantages, such as that flexibility is strong, and heating rate is fast, highly-safe.
A kind of assemble method based on above-mentioned spontaneous heating thermal handwriting, comprising the following steps:
S1, the fever tablet 12 of heating module is rolled into barrel-shaped, is put into penholder internal heat generation module rest area 4;
S2, the rechargeable of power supply module is placed in power supply module rest area 6 in penholder;
S3, the integrated circuit board of charge and discharge protecting module is placed in charge and discharge protecting module rest area 7, circuit in penholder Charged state display lamp 21 in plate should be directed at the opening of the charged state display lamp on penholder shell 8;
S4, power switch 15 is placed in the opening of the power switch on penholder 9;
S5, it will be sealed at the top of penholder with rear cover 10, the micro USB on the integrated circuit board 22 of charge and discharge protecting module Charging interface 18 exposes from the charging interface opening 11 on rear cover 10;
S6, Neutral ball-point for ball-point pen is put into pen core rest area 2 from penholder lower port, screws on pen tip lid 1.
Spontaneous heating in order to prove the beneficial effect of spontaneous heating thermal handwriting provided in this embodiment, to the offer of the present embodiment Pen havnig function of warming hand carries out heating effect test, and Fig. 3 shows the time-temperature curve figure of spontaneous heating thermal handwriting different parts, can from Fig. 3 To find out, pen havnig function of warming hand can be brought rapidly up in 5 minutes, and subsequent writing pencil inner heat section temperature is stablized at 65 DEG C, writing pencil External lower end (hold a pen region) is stablized at 47 DEG C, which is very suitable to warm hand, middle part and upper end temperature point outside writing pencil Not maintaining 44 DEG C and 35 DEG C does not influence power supply and circuit board normal work, safety with higher and practicability.
The above embodiment is a preferred embodiment of the present invention, and the description thereof is more specific and detailed, but can not therefore and It is interpreted as limitations on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art, not taking off Under the premise of from present inventive concept, made changes, modifications, substitutions, combinations, simplifications should be equivalent substitute mode, all wrap Containing within protection scope of the present invention.

Claims (10)

1. a kind of spontaneous heating thermal handwriting, including shell and pen core, which is characterized in that further include heating circuit system, heating circuit System includes heating module, power supply module and charge and discharge protecting module, and power supply module provides power supply for heating module, makes the mould that generates heat The fever tablet of block can generate heat, and the positive and negative anodes of the power input interface in charge and discharge protecting module are correspondingly connected with power supply module Positive and negative anodes, the fever plate electrode of the power output interface connection heating module in charge and discharge protecting module.
2. spontaneous heating thermal handwriting as described in claim 1, which is characterized in that after described shell includes pen tip lid, penholder and pen Lid;Pen tip lid, penholder and a rear cover are separate removable component, and pen tip lid and penholder are connected through a screw thread;Rear cover is pen Bar top closure, the opening of the interior charging interface equipped with charge and discharge protecting module, a rear cover are connected through a screw thread at the top of penholder.
3. the spontaneous heating thermal handwriting as shown in claim 2, which is characterized in that the penholder is that streamline is cylindrical, interior to be equipped with pen Core rest area, heating module rest area, power supply module rest area and charge and discharge protecting module rest area, the penholder are additionally provided with Power switch opening and charged state display lamp opening.
4. spontaneous heating thermal handwriting as described in claim 1, which is characterized in that the charge and discharge protecting module includes one piece integrated Circuit board and connecting wire, be equipped in integrated circuit board IC chip, charging interface, power input interface, power output interface and Charged state display lamp.
5. spontaneous heating thermal handwriting as described in claim 1, which is characterized in that the power supply module includes rechargeable, power supply Switch and its connecting wire, the positive and negative anodes of rechargeable are correspondingly connected with the power supply of the charge and discharge protecting module by connecting wire Input interface, power switch are arranged in connecting wire.
6. spontaneous heating thermal handwriting as claimed in claim 5, which is characterized in that the rechargeable is in cylindrical body, cylindrical body half Diameter is R=10mm, a height of H=44mm, and between 320mAh-1000mAh, output voltage is the rated capacity of rechargeable 3.7V。
7. spontaneous heating thermal handwriting as described in claim 1, which is characterized in that the heating module includes that fever tablet and connection are led Line.
8. spontaneous heating thermal handwriting as claimed in claim 7, which is characterized in that the fever tablet is carbon fiber far infrared fever Piece.
9. the spontaneous heating thermal handwriting as described in any one of claim 4-7, which is characterized in that the connecting wire is 0.1mm Enameled wire.
10. a kind of assemble method based on spontaneous heating thermal handwriting as claimed in claim 3, which comprises the following steps:
The fever tablet of heating module is rolled into barrel-shaped, is put into penholder internal heat generation module rest area;
The rechargeable of power supply module is placed in power supply module rest area in penholder;
Charge and discharge protecting module is placed in charge and discharge protecting module rest area in penholder, the charging shape in charge and discharge protecting module State display lamp should be directed at the opening of the charged state display lamp on penholder shell;
The power switch of power supply module is placed in the opening of the power switch on penholder;
It will be sealed at the top of penholder with a rear cover, the charging interface that the charging interface on charge and discharge protecting module covers after pen is opened Mouth exposes;
Pen core is put into pen core rest area from penholder lower port, screws on pen tip lid.
CN201811374022.9A 2018-11-19 2018-11-19 A kind of spontaneous heating thermal handwriting and its assemble method Pending CN109605987A (en)

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Application Number Priority Date Filing Date Title
CN201811374022.9A CN109605987A (en) 2018-11-19 2018-11-19 A kind of spontaneous heating thermal handwriting and its assemble method

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Application Number Priority Date Filing Date Title
CN201811374022.9A CN109605987A (en) 2018-11-19 2018-11-19 A kind of spontaneous heating thermal handwriting and its assemble method

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110757985A (en) * 2019-11-07 2020-02-07 沈萍 Hand warming pen

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201325251Y (en) * 2008-11-06 2009-10-14 盛骁麟 Electrical heating pencil
CN201341245Y (en) * 2009-02-07 2009-11-04 梁健波 Flexible heater
CN202050260U (en) * 2011-04-12 2011-11-23 上海华一信息科技发展股份有限公司 Wireless charging battery
CN204801304U (en) * 2015-06-24 2015-11-25 殷筱凝 Warm handwriting
CN205112736U (en) * 2015-11-09 2016-03-30 重庆文理学院 Warm multi -functional painting brush of hand -type
CN205199557U (en) * 2015-12-09 2016-05-04 王瑞霞 Laboratory bench is used in biological assay teaching
CN205800582U (en) * 2016-03-29 2016-12-14 浙江海洋学院东海科学技术学院 A kind of heating pen
CN107510893A (en) * 2016-06-16 2017-12-26 王翔 A kind of far infrared Therapetuic instrument for cervical vertebrae
CN107647496A (en) * 2017-11-08 2018-02-02 海宁安捷复合材料有限责任公司 A kind of carbon fiber heating fur clothing
CN107776279A (en) * 2017-12-01 2018-03-09 王丽霞 A kind of new pen havnig function of warming hand
CN108340707A (en) * 2017-01-23 2018-07-31 襄阳市第三十九中学 It writes and does not freeze the pen of hand
CN108379062A (en) * 2018-05-11 2018-08-10 深圳市倍轻松科技股份有限公司 Mini neck massager
CN207801536U (en) * 2018-01-26 2018-08-31 汇莱实业(深圳)有限公司 A kind of novel cylindrical mobile power

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201325251Y (en) * 2008-11-06 2009-10-14 盛骁麟 Electrical heating pencil
CN201341245Y (en) * 2009-02-07 2009-11-04 梁健波 Flexible heater
CN202050260U (en) * 2011-04-12 2011-11-23 上海华一信息科技发展股份有限公司 Wireless charging battery
CN204801304U (en) * 2015-06-24 2015-11-25 殷筱凝 Warm handwriting
CN205112736U (en) * 2015-11-09 2016-03-30 重庆文理学院 Warm multi -functional painting brush of hand -type
CN205199557U (en) * 2015-12-09 2016-05-04 王瑞霞 Laboratory bench is used in biological assay teaching
CN205800582U (en) * 2016-03-29 2016-12-14 浙江海洋学院东海科学技术学院 A kind of heating pen
CN107510893A (en) * 2016-06-16 2017-12-26 王翔 A kind of far infrared Therapetuic instrument for cervical vertebrae
CN108340707A (en) * 2017-01-23 2018-07-31 襄阳市第三十九中学 It writes and does not freeze the pen of hand
CN107647496A (en) * 2017-11-08 2018-02-02 海宁安捷复合材料有限责任公司 A kind of carbon fiber heating fur clothing
CN107776279A (en) * 2017-12-01 2018-03-09 王丽霞 A kind of new pen havnig function of warming hand
CN207801536U (en) * 2018-01-26 2018-08-31 汇莱实业(深圳)有限公司 A kind of novel cylindrical mobile power
CN108379062A (en) * 2018-05-11 2018-08-10 深圳市倍轻松科技股份有限公司 Mini neck massager

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110757985A (en) * 2019-11-07 2020-02-07 沈萍 Hand warming pen

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Application publication date: 20190412