CN202288593U - Hand warmer - Google Patents
Hand warmer Download PDFInfo
- Publication number
- CN202288593U CN202288593U CN2011203714664U CN201120371466U CN202288593U CN 202288593 U CN202288593 U CN 202288593U CN 2011203714664 U CN2011203714664 U CN 2011203714664U CN 201120371466 U CN201120371466 U CN 201120371466U CN 202288593 U CN202288593 U CN 202288593U
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- Prior art keywords
- heat
- hand warmer
- circuit board
- battery
- housing
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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.)
- Withdrawn - After Issue
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Abstract
The utility model discloses a hand warmer which comprises a housing, a circuit board, a power source, a heating component, a heat-insulating layer and a heat-transfer component, wherein the power source is connected with the circuit board, the power source and the circuit board are arranged in the housing, the heating component is connected with the circuit board and arranged on the outer side of the housing, the heating component is fixedly connected with the housing through the heat-insulating layer which is arranged at the bottom of the heating component, and the heat-transfer component wraps and is mounted next to the heating component; the heating component is a heating film, and the heating film is positioned in an interlayer which is formed between the heat-insulating layer and the heat-transfer component; the heat-transfer component comprises a heat-transfer adhesive and a heat-transfer fin, the heat-transfer adhesive is in close contact with the heating film and used for balancing the surface temperature of the heat-transfer fin, and the heat-transfer fin is a hand warmer face layer with a palm-like curve shape. The hand warmer has high heat efficiency and can be powered by a rechargeable battery or a common battery. A battery chamber is provided with a structure preventing battery reversal.
Description
Technical field
This utility model relates to a kind of electric heating utensil, relates in particular to a kind of portable hand warmer.
Background technology
In the winter of cold, many salary layers, office personage need meet cold for helping them to support in the office outdoor activity of cold, have occurred the warmer for hands of rechargeable type on the market.Like the patent No. is that the application for a patent for invention of ZL200510129898.3 just discloses a kind of portable cell hand warmer; This hand warmer comprises metal shell; Plastic connecting body, rechargeable battery, said metal shell inboard is sprayed with far-infrared electrothermal film; Far-infrared electrothermal film and metal shell inboard have the heat conductive insulating layer to fit; Said far-infrared electrothermal film and be contained between the battery of plastic connecting body and have the reflect heat layer to be separated by, described far-infrared electrothermal film be by the switch that is located on the plastic connecting body, temperature controller its heating effect of control and fever time.The structure of the hand warmer of prior art and above-mentioned ZL200510129898.3 patent is similar; The general technical scheme that all adopts electro-heat equipment direct heating housing; Make the thermal efficiency not high, and the hand warmer charging interval is longer, can not changes battery; Go out to portably use and in time to charge after not having electricity, can only interrupt using.Though some hand warmer can be changed battery, battery generally is not set prevents connecing antistructure, when because of carelessness the battery electrode wrong, cause easily and burn circuit board.
The utility model content
To the deficiency of prior art, this utility model provides that a kind of thermal efficiency is high, chargeable, replaceable battery and can prevent that battery from connecing anti-hand warmer.
This utility model solves the technical scheme that its technical problem adopted:
A kind of hand warmer comprises housing, circuit board, power supply, heat generating component, thermal insulation layer and heat-conductive assembly, and power supply is connected with circuit board, and power supply and circuit board are installed in the housing, and heat generating component is connected with circuit board and is installed to said outside; Heat generating component is fixedly connected with housing through the thermal insulation layer of its bottom; The heat-conductive assembly parcel also is close to heat generating component and is installed.
Described heat generating component comprises heating film; Heating film is electrically connected and is installed on circuit board in the interlayer between said thermal insulation layer and the heat-conductive assembly.
Described heat-conductive assembly comprises each other the closely heat-conducting glue and the conducting strip of contact; Said heat-conducting glue closely contacts with said heating film, is used for transmitting the heat of heating film generation and the temperature of balanced conducting strip to conducting strip; Said conducting strip is the heating surface layer of hand warmer, has the palm curve shape.
Said enclosure interior also comprises battery compartment, but said power supply is the loading and unloading battery that places in the battery compartment.
The temperature-control circuit that said circuit board contains to the charging circuit of said power source charges and is used to detect the said heat-conductive assembly temperature of control.
Also be provided with conducting strip and the anti-back flush unit that connects that battery is connected with circuit board in the said battery compartment; The positive pole of said battery comprises outstanding top; Prevent that connecing back flush unit is the insulating trip that is provided with perforate, said perforate is slightly larger than the outstanding top of anode; Prevent connecing the position that back flush unit is installed on corresponding anode on the conducting strip.
Described hand warmer also comprises switch, shift knob, power input interface and two LED lights; Switch, power input interface and two LED lights are connected with circuit board respectively; Shift knob is installed on the shell and is connected with switch; Said housing comprises the upper shell and the lower house of mutual clamping.
Preferably, said heating film is selected the polyimides Electric radiant Heating Film for use; Said thermal insulation layer is selected foam-rubber cushion for use.
The electrode tip of described heat generating component is connected with circuit board through welding; Be provided with the high-temperature insulation paper of insulation protection effect between the bond pad locations of heat generating component electrode tip and the said heat-conductive assembly.
Preferably, said conducting strip is selected aluminium flake for use; Said heat-conducting glue is selected UL flame-retarded heat-conducting glue for use.
Compared with prior art; The hand warmer of this utility model has following useful technique effect: 1, since electro-heat equipment and heat-conductive assembly drawn to connect and be installed to outside the housing; Make electro-heat equipment need not to heat the bigger housing of volume itself; Make the thermal efficiency higher, energy consumption is lower, thereby has prolonged the service time of battery; 2, both the rechargeable battery that can be recycled can be used, also common batteries can be used, convenient, flexible; 3, battery compartment being provided with prevents that battery from connecing antistructure, therefore can prevent to burn circuit board because of improper use.
Description of drawings
Fig. 1 is the decomposing state structural representation of this utility model hand warmer;
Axonometric chart when Fig. 2 faces up for the conducting strip of this utility model hand warmer;
Fig. 3 is the axonometric chart of lower house up time of this utility model hand warmer;
Fig. 4 installs the anti-partial enlarged drawing that connects back flush unit for the battery compartment of this utility model hand warmer;
Fig. 5 does not install the anti-partial enlarged drawing that connects back flush unit for the battery compartment of this utility model hand warmer;
Fig. 6 is the functional-block diagram of this utility model hand warmer;
Fig. 7 is the circuit diagram of this utility model hand warmer.
The specific embodiment
To combine the accompanying drawing and the specific embodiment that this utility model is further specified below.
To shown in Figure 3, the hand warmer of this utility model comprises like Fig. 1: the heat-conductive assembly 5 of housing 1, circuit board 2, power supply 3, heat generating component 4 and transmission heat, and said power supply 3 is installed in the housing 1 with circuit board 2; Heat generating component 4 is connected with circuit board 2 and is installed to said housing 1 outside; Heat generating component 4 is fixedly connected with housing 1 through the thermal insulation layer 42 of its bottom; Heat-conductive assembly 5 parcels also are close to heat generating component 4 and are installed.
Heat generating component 4 comprises the heating film 41 that is used for the electric energy that provides is converted into heat energy; This heating film 41 be electrically connected with circuit board 2 and the interlayer between said thermal insulation layer 42 and heat-conductive assembly 5 in.Heating film 41 is selected the polyimides Electric radiant Heating Film for use; Heat insulating mattress 42 is selected foam-rubber cushion for use.Heat insulating mattress 42 can stop that the heat that electro-heat equipment 4 produced transmits to shell 1, can prevent the overheated problem such as cause catching fire of shell 1 on the one hand; The heat overwhelming majority that on the other hand heat generating component 4 is produced is delivered to heat-conductive assembly 5, increases efficiency of utilization, prolongs the service time of hand warmer power supply; In addition, the material selection insulant of thermal insulation layer 42 can prevent heating film 42 unexpected electric leakages and be transmitted to shell 1.
Said heat-conductive assembly 5 is positioned at the outermost layer of hand warmer; The heat-conducting glue 52 and conducting strip 51 that comprise closely contact each other; Said heat-conducting glue 52 closely contacts with said heating film 41; Be used for transmitting the heat of heating film 41 and the temperature of balanced conducting strip 51 to conducting strip 51, said conducting strip 51 is the heating surface layer of hand warmer, has human body palm curve shape.Said conducting strip 51 is selected aluminium flake for use; Heat-conducting glue 52 is selected UL flame-retarded heat-conducting glue for use.On the one hand, heat-conducting glue 52 lets the heat of electro-heat equipment 4 generations pass to conducting strip 51 equably; On the other hand, because heat-conducting glue 52 is selected insulant for use, can prevent heat generating component 4 unexpected electric leakages and be transmitted to conducting strip 51; In addition, heat-conducting glue 52 is selected fire proofing for use, causes accident to prevent too high the catching fire of heat generating component 4 temperature.Said heat generating component 4 heating film 41 electrode tip through the welding be connected with circuit board 2; Between said heat-transfer device 5, insert and put the high-temperature insulation paper 53 of insulation protection effect in the bond pad locations of the electrode tip of the heating film 41 of said heat generating component 4, this high-temperature insulation paper 53 can effectively prevent the electric leakage of electro-heat equipment 4 electrode tip solder joints.
Said housing 1 comprises the upper shell 11 and lower house 12 of mutual clamping; Said housing 1 inside also comprises battery compartment 14, but said power supply 3 is for placing the loading and unloading battery 31 in the battery compartment 14.Battery 31 is selected AA rechargeable battery or No. 5 aneroid battery for use.Battery 31 is connected with circuit board 2 through conducting strip 32.The positive pole of said battery 31 comprises outstanding top 311; Said battery compartment 14 also is provided with the anti-back flush unit 33 that connects; The anti-back flush unit 33 that connects is for being provided with the insulating trip of perforate, and perforate is slightly larger than battery 31 anodal outstanding tops 311; Prevent that connecing back flush unit 33 is installed on corresponding battery 31 anodal positions on the conducting strip 32.More excellent, the anti-verge of opening convexity that connects back flush unit 33 forms a bulge loop.As shown in Figure 4, insulatingly anti-connect back flush unit 33 and stopped conducting strip 32; When battery is installed; Battery 31 positive poles that only have outstanding top 311 can pass the anti-perforate contact conducting strip 32 corresponding batteries 31 anodal positions that connect back flush unit 33, and the negative pole of battery 31 does not have outstanding top 311 and can't contact conducting strip 32 corresponding batteries 31 anodal positions; As shown in Figure 5, to install when preventing connecing back flush unit 33, battery 31 negative poles can contact conducting strip 32 corresponding batteries 31 anodal positions arbitrarily, cause circuit board 2 to burn.
This hand warmer also comprises switch 221, shift knob 222, power input interface 23 and two LED lights 21; Switch 221, power input interface 23 and two LED lights 21 are connected with circuit board 2 respectively; Shift knob 222 is installed on the shell 1 and is connected with switch 221; Power input interface 23 is the MINI USB interface.Two LED lights 21 are respectively LED lamp 211 and LED lamp 212.
Said circuit board 2 contains to the charging circuit of said power supply 3 chargings and the temperature-control circuit that is used to detect said heat-conductive assembly 5 temperature of control.Heat-conductive assembly 5 is close in the temperature sensor 6 of this temperature-control circuit.Temperature sensor 6 is negative temperature coefficient temperature sensor (NTC).
Fig. 6 and Fig. 7 are respectively the functional-block diagram and the circuit diagrams of this utility model hand warmer.Among Fig. 7, the K1 switch is a switch 221, and R35 10K NTC is temperature sensor 6.The operation principle of this utility model hand warmer is described below in conjunction with Fig. 6 and Fig. 7.
Heating:
K1 switch (being switch 221) is pressed, and the anode voltage source is to the 3pin-4pin of K1, and voltage makes the M1 conducting at R3 and R12 generation pressure reduction; Electric current flows to PET-from PET+ and forms the loop; Electric current produces heat energy through heat generating component 4, passes through LED lamp 212 simultaneously, R11; Form the loop through M2, LED lamp 212 lights.
The constant temperature function:
Work as adstante febre, when R35 10K NTC (being temperature sensor 6) detected temperature and rises to 52 degrees centigrade, the R35 resistance changed; Make U6A the 2nd foot produce high level, 1 foot produces low level ends M1, cuts off power supply; When R35 10K NTC (being temperature sensor 6) detected temperature to 48 degree centigrade, the R35 resistance changed, and made U6B the 2nd foot produce high level; 7 feet produce high level and make the M1 conducting; The power supply persistent fever is provided, between 48-52 degree centigrade, reaches the constant temperature purpose with steady temperature.
Charge Management:
K1 switch (being switch 221) is returned the OFF state, and cell voltage makes R7 produce high level through voltage stabilizing chip U1, the Q3 conducting, and Q4 ends; The M2 conducting, DC power supply 5.0V charges the battery through D1, M2 through power input interface 23, when voltage rises to 3.2V, will be 0 between Q7 and the Q8; The Q3 conducting, the Q4 conducting, M2 ends, and stops charging; Prevent that effectively battery from causing danger because of overcharging, DC power supply 5.0V produces pressure drop during through D1 through power input interface 23 and causes the Q1 conducting, with voltage through R2, LED lamp 211 formation loops; LED lamp 211 lights. when cell voltage charges to 3.2V, will be 0 between Q7 and the Q8, Q3 conducting, Q4 conducting; M2 is 0 by causing the D1 pressure drop, causes Q1 to end, and cuts off the current supply circuit of LED lamp 211, and LED lamp 211 extinguishes.
The foregoing description is this utility model preferred implementation, and all its principles are identical with present embodiment or proximate with basic structure, all within this utility model protection domain.
Claims (10)
1. hand warmer; Comprise housing (1), circuit board (2), power supply (3), heat generating component (4), thermal insulation layer (42) and heat-conductive assembly (5); Power supply (3) is connected with circuit board (2); Power supply (3) and circuit board (2) are installed in the housing (1), it is characterized in that: heat generating component (4) is connected with circuit board (2) and is installed to said housing (1) outside; Heat generating component (4) is fixedly connected with housing (1) through the thermal insulation layer (42) of its bottom; Heat-conductive assembly (5) wraps up and is close to heat generating component (4) and installs.
2. hand warmer according to claim 1 is characterized in that: described heat generating component (4) comprises heating film (41); Heating film (41) is electrically connected and is installed in the interlayer between said thermal insulation layer (42) and the heat-conductive assembly (5) with circuit board (2).
3. hand warmer according to claim 2 is characterized in that: described heat-conductive assembly (5) comprises each other the closely heat-conducting glue (52) and the conducting strip (51) of contact; Said heat-conducting glue (52) closely contacts with said heating film (41), is used for transmitting the heat of heating film (41) generation and the temperature of balanced conducting strip (51) to conducting strip (51); Said conducting strip (51) is the heating surface layer of hand warmer, has the palm curve shape.
4. according to any described hand warmer of claim 1 to 3, it is characterized in that: said housing (1) inside also comprises battery compartment (14), and said power supply (3) is to place battery compartment (14) but interior loading and unloading battery (31).
5. according to any described hand warmer of claim 1 to 3, it is characterized in that: said circuit board (2) contains to the charging circuit of said power supply (3) charging and is used for detecting the temperature-control circuit of controlling said heat-conductive assembly (5) temperature.
6. hand warmer according to claim 4 is characterized in that: also be provided with conducting strip (32) and the anti-back flush unit (33) that connects that battery (31) is connected with circuit board (2) in the said battery compartment (14); The positive pole of said battery (31) comprises outstanding top (311); The anti-back flush unit (33) that connects is for being provided with the insulating trip of perforate, and said perforate is slightly larger than the anodal outstanding top of battery (31) (311); The anti-back flush unit (33) that connects is installed on the upward anodal position of corresponding battery (31) of conducting strip (32).
7. hand warmer according to claim 5 is characterized in that: also comprise switch (221), shift knob (222), power input interface (23) and two LED lights (21); Switch (221), power input interface (23) and two LED lights (21) are connected with circuit board (2) respectively; Shift knob (222) is installed shell (1) and upward is connected with switch (221); Said housing (1) comprises the upper shell (11) and the lower house (12) of mutual clamping.
8. hand warmer according to claim 2 is characterized in that: said heating film (41) is selected the polyimides Electric radiant Heating Film for use; Said thermal insulation layer (42) is selected foam-rubber cushion for use.
9. according to any described hand warmer of claim 1 to 3, it is characterized in that: the electrode tip of described heat generating component (4) is connected with circuit board (2) through welding; Be provided with the high-temperature insulation paper (53) of insulation protection effect between the bond pad locations of heat generating component (4) electrode tip and the said heat-conductive assembly (5).
10. hand warmer according to claim 3 is characterized in that: said conducting strip (51) is selected aluminium flake for use; Said heat-conducting glue (52) is selected UL flame-retarded heat-conducting glue for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203714664U CN202288593U (en) | 2011-09-27 | 2011-09-27 | Hand warmer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203714664U CN202288593U (en) | 2011-09-27 | 2011-09-27 | Hand warmer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202288593U true CN202288593U (en) | 2012-07-04 |
Family
ID=46357591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203714664U Withdrawn - After Issue CN202288593U (en) | 2011-09-27 | 2011-09-27 | Hand warmer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202288593U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103006371A (en) * | 2011-09-27 | 2013-04-03 | 顺昌泰科技（深圳）有限公司 | Hand warmer |
| CN108451550A (en) * | 2018-01-29 | 2018-08-28 | 倪菁菁 | A kind of laboratory test department Medical hand body fluid, which is adopted, tests device |
-
2011
- 2011-09-27 CN CN2011203714664U patent/CN202288593U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103006371A (en) * | 2011-09-27 | 2013-04-03 | 顺昌泰科技（深圳）有限公司 | Hand warmer |
| CN103006371B (en) * | 2011-09-27 | 2015-12-30 | 顺昌泰科技（深圳）有限公司 | A kind of hand warmer |
| CN108451550A (en) * | 2018-01-29 | 2018-08-28 | 倪菁菁 | A kind of laboratory test department Medical hand body fluid, which is adopted, tests device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120704 Effective date of abandoning: 20151230 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |