CN86208439U - Automatic temperature-control switch for electric warming pad - Google Patents
Automatic temperature-control switch for electric warming pad Download PDFInfo
- Publication number
- CN86208439U CN86208439U CN 86208439 CN86208439U CN86208439U CN 86208439 U CN86208439 U CN 86208439U CN 86208439 CN86208439 CN 86208439 CN 86208439 U CN86208439 U CN 86208439U CN 86208439 U CN86208439 U CN 86208439U
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- CN
- China
- Prior art keywords
- switch
- shelves
- under blanket
- temperature
- thermal element
- 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.)
- Ceased
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Abstract
The utility model discloses an automatic temperature-control switch for the electric warming pad. The utility model is characterized in that when a double-pole three-position sliding switch is positioned in an III stage, a rectifying diode is connected in parallel with a set of switch contacting heads which are controlled by bimetallic strips. In company with the variance in the selected temperature, the switch contacting heads are closed or switched off, in order to realize automatic change-over between the rise in temperature in the III stage and the temperature preservation in an II stage. The function of the security protection is performed. A simulation electric warming element and a miniature variable resistance are also connected in a switch loop. The usage temperature of the electric warming pad can be arbitrarily selected. Two emitting diodes can indicate the operating state of the electric warming pad. The utility model has the advantages of convenient operation and low cost.
Description
The utility model relates to a kind of switching device of under blanket.
Existing under blanket temperature regulating switch is an example with " the under blanket Safe control switch " of number of patent application 85205298; though intensification, insulation, disconnection third gear are arranged; and because luminous insurance is housed on the heater element loop; when being short-circuited or during abnormal conditions such as supply voltage rising suddenly; can play safeguard protection; but between intensification and heat insulation function, can not change automatically, so use very inconvenient.
Known under blanket thermostat, though can realize automatic constant-temperature, because thermostat separates with switch, so make complex structure, cost is higher, uses also inconvenience.
Task of the present utility model provides a kind of new under blanket switch, this under blanket switch can heat up and heat insulation function between realize conversion automatically, compact conformation, cost are low, not only easy to use but also can play the safeguard protection effect.
Its solution is: three slide switches of double-pole are 2. when III shelves (shelves promptly heat up), rectifier diode in the switch loop one group of elastic copper sheet switch contact that 4. controlled by bimetal leaf 3. in parallel, when selected temperature (50～100 ℃) is following, bimetal leaf 4. make the switch contact closure and the short circuit rectifier diode 3., when reaching selected temperature, thereby 4. bimetal leaf is out of shape switch contact is disconnected; Heating also be connected with in the loop analog electrical thermal element 5., resistance 10., under blanket heating wire (13), 7. miniature variable resistor is parallel to one of 5. section of analog electrical thermal element, the analog electrical thermal element 5. stage casing and resistance 10. and press opposed polarity direction two luminous indicating diodes in parallel (11), (12) between the contact of under blanket heating wire (13), bimetal leaf 4. reach the elastic copper sheet switch contact, the analog electrical thermal element that are subjected to its control all wrap in heat-barrier material 8. in.When switch pushes the III shelves,, can realize the automatic conversion between III, the II shelves function according to variation of temperature, and clearly indicate by two light-emitting diodes, promptly two light-emitting diodes are bright entirely when the III shelves heat up, and when being transformed into the insulation of II shelves automatically, a light-emitting diode is bright; When switch pushed the II shelves, 3. rectifier diode separated with the elastic copper sheet switch contact, only remained on II shelves insulation shelves, so a light-emitting diode is bright; When switch pushes the I shelves, i.e. deenergization, two light-emitting diodes all do not work.
The utility model also can adopt composite type, its scheme be with miniature variable resistor 7., the analog electrical thermal element 5., elastic copper sheet A 6., the elastic copper sheet switch contact 9. 4. formed with bimetal leaf of B, heat-barrier material 8. and box body be combined into thermostat, use with original switch combination, can 10. after the parallel connection be serially connected with light-emitting diode (11), (12) and resistance in the switch loop.
Because the utility model can be realized changing automatically between heat up shelves and insulation shelves, so compact conformation in addition is easy to use, safe and reliable, with low cost.
Fig. 1 is the electrical schematic diagram of under blanket on-off thermostat.
Fig. 2 is the switch gear figure of under blanket on-off thermostat.
Fig. 3 is a under blanket on-off thermostat modular electrical schematic diagram.
Among the figure: 1. 220V attaching plug, 2. double-pole three slide switches, 3. rectifier diodes, 4. bimetal leaf, 5. analog electrical thermal element, 6. elastic copper sheet A, 7. miniature variable resistor, 8. heat-barrier material, 9. elastic copper sheet B, 10. resistance, (11), (12) luminous indicating diode, (13) heating wire of under blanket, (14), (15) Elastic Sliding contact, (16) insulation joint plate.
Below in conjunction with accompanying drawing and embodiment the utility model course of work is further elaborated.
The course of work of the present utility model is: transferring the 7. selected the highest intensification temperature of under blanket of miniature variable resistor is 55 ℃, plug in plug 1., 2. three slide switches of double-pole are pushed the III shelves, 5. the analog electrical thermal element begins to heat up with full power with under blanket heating wire (13), because what flow through in the heating loop is alternating current, therefore two different poles are all bright to the light-emitting diode that inserts the loop, and the indication under blanket is in III shelves function.
Since the analog electrical thermal element 5. the programming rate of heat-barrier material in 8. is optional must be faster than the programming rate of under blanket heating wire (13), 7. miniature variable resistor can be regulated flowing through analog electrical thermal element electric current 5. simultaneously, thereby analog electrical thermal element programming rate 5. can regulated so when 4. the selected disc-shaped bimetal leaf 50 ℃ of distortion upsets was subjected to the analog electrical thermal element 5. Temperature Influence is warmed up to 50 ℃ and distortion upset and cuts off III shelves loop, the temperature of under blanket heating wire (13) was on any chosen temperature value between 35 ℃～60 ℃ between the programming rate that is greater than or less than under blanket heating wire (13).Therefore, when the temperature of under blanket heating wire (13) reaches 55 ℃, 4. the disc-shaped bimetal leaf is out of shape upset, 4. 6. the elastic copper sheet A that controlled by the disc-shaped bimetal leaf is resetted 9. disengage and III shelves loop is disconnected with elastic copper sheet B, simultaneously, 3. electric current continues after the halfwave rectifier with 1/4 power of about III shelves 5. under blanket heating wire (13) and analog electrical thermal element to be heated through the rectifier diode of II shelves, at this moment, a light-emitting diode is bright, and the expression under blanket is in II shelves function.The shortage of heat of replenishing when II shelves power will make the distortion upset that 4. resets of disc-shaped bimetal leaf to remedy in the same time dispersed heat, and 9. 6. control elastic copper sheet A contact again with B, connect III shelves loop, 5. continuation heats up with full power under blanket heating wire (13), analog electrical thermal element, two light-emitting diodes are all bright, and the indication under blanket is in III shelves function.Along with variation of temperature, under blanket just will alternately be on III shelves and the II shelves automatically.
When the people in bed, then can push the II shelves to slide switch as required and promptly be incubated or push I shelves deenergization.During the I shelves, two light-emitting diodes all do not work.
Claims (2)
1, a kind of under blanket on-off thermostat, by attaching plug 1., 2. three slide switches of double-pole constitute with the switch box body, it is characterized in that three slide switches of double-pole are 2. when III shelves (shelves promptly heat up), rectifier diode in the switch loop one group of elastic copper sheet switch contact that 4. controlled by bimetal leaf 3. in parallel, when selected temperature (50～100 ℃) is following, bimetal leaf 4. make the switch contact closure and the short circuit rectifier diode 3., when reaching selected temperature, thereby 4. bimetal leaf is out of shape switch contact is disconnected; Heating be connected with in the loop analog electrical thermal element 5., resistance 10., under blanket heating wire (13), 7. miniature variable resistor is parallel to analog electrical thermal element section one of in 5., the analog electrical thermal element 5. stage casing and resistance 10. and press opposed polarity direction two luminous indicating diodes in parallel (11), (12) between the contact of under blanket heating wire (13), bimetal leaf 4. reach the elastic copper sheet switch contact, the analog electrical thermal element that are subjected to its control all wrap in heat-barrier material 8. in.When switch pushes the III shelves,, can realize the automatic conversion between III, the II shelves function according to variation of temperature; Two light-emitting diodes bright dark, the operating state of indication under blanket: complete bright for the III shelves heat up, one bright one secretly is the insulation of II shelves, complete dark be the disconnections of I shelves.
2, under blanket on-off thermostat according to claim 1, it is characterized in that also can adopting composite type, be about to miniature variable resistor 7., the analog electrical thermal element 5., elastic copper sheet A 6., the elastic copper sheet switch contact 9. 4. formed with bimetal leaf of B, heat-barrier material 8. and box body be combined into thermostat, use with original switch combination, can 10. after the parallel connection be serially connected with light-emitting diode (11), (12) and resistance in the former switch loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208439 CN86208439U (en) | 1986-10-31 | 1986-10-31 | Automatic temperature-control switch for electric warming pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86208439 CN86208439U (en) | 1986-10-31 | 1986-10-31 | Automatic temperature-control switch for electric warming pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86208439U true CN86208439U (en) | 1988-03-02 |
Family
ID=4810648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86208439 Ceased CN86208439U (en) | 1986-10-31 | 1986-10-31 | Automatic temperature-control switch for electric warming pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86208439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9082272B2 (en) | 2010-10-28 | 2015-07-14 | Louise Mohn | Circuit for applying heat and electrical stimulation |
-
1986
- 1986-10-31 CN CN 86208439 patent/CN86208439U/en not_active Ceased
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9082272B2 (en) | 2010-10-28 | 2015-07-14 | Louise Mohn | Circuit for applying heat and electrical stimulation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |