CN203260531U - Overheating power-off reset protector - Google Patents
Overheating power-off reset protector Download PDFInfo
- Publication number
- CN203260531U CN203260531U CN 201320254543 CN201320254543U CN203260531U CN 203260531 U CN203260531 U CN 203260531U CN 201320254543 CN201320254543 CN 201320254543 CN 201320254543 U CN201320254543 U CN 201320254543U CN 203260531 U CN203260531 U CN 203260531U
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- contact
- fixed contact
- thermistor
- upper fixed
- armature
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Abstract
Disclosed in the utility model is an overheating blackout reset protector that comprises a ceramic seat, a thermistor, a pressing plate, a lower fixed contact, a movable contact, an upper fixed contact, a spring plate, and a temperature sensing plate. Fixed lugs are arranged at two ends of the ceramic seat; the spring plate is fixed at the ceramic seat by a rivet; and the temperature sensing plate and the spring plate are mutually interlocked. The movable contact is arranged at one end of the spring plate; and the lower fixed contact and the upper fixed contact are fixed with the ceramic seat by the lugs. The lower fixed contact is arranged at one end of the movable contact; and the lower fixed contact and the movable contact are in a normal temperature contact state. The upper fixed contact is arranged at the upper end of the movable contact; and the upper fixed contact and the movable contact are in a normal temperature separation state. And the upper fixed contact is connected with the thermistor by a PTC gasket; and the thermistor is connected to a circuit. The provided overheating blackout reset protector has the characteristics of security and reliability, repeated usage, and long service life and the like.
Description
Technical field
The utility model relates to a kind of Protector for electric appliances, is specifically related to a kind of overheated power-off restoration protector.
Background technology
Overheat protector is widely used on the various electrical equipment such as air-conditioning, washing machine, hair dryer, warm-air drier etc., present overheat protector heats up electrical equipment by the non-normal workings such as overload short circuit of load mostly, hot temperature conducts to temperature-sensitive element, temperature-sensitive element promotes shell fragment and opens dynamic and static contact when temperature reaches set point, thereby cuts off the electricity supply; Temperature-sensitive element tends to influenced by ambient temperature normal and reduce its sensitivity in series circuit, causes heater overheated and cause relevant security incident thing.
Summary of the invention
In order to overcome the existing deficiency of prior art, it is a kind of simple in structure that the purpose of this utility model is to provide, the hot power-off restoration protector of overheated sustainable protection load and circuit.
In order to reach above-mentioned purpose of design, the technical solution adopted in the utility model is as follows:
A kind of overheated power-off restoration protector, comprise ceramics seat, thermistor, compressing tablet, lower fixed contact, armature contact, upper fixed contact, shell fragment, thermal sensitive piece, the static line ear is established at the two ends of ceramics seat, the mutual interlock of thermal sensitive piece and shell fragment and be fixed on the ceramics seat by rivet, armature contact is arranged at an end of shell fragment, lower fixed contact and upper fixed contact fix by line ear and ceramics seat, lower fixed contact is located at the lower end of armature contact, and lower fixed contact and armature contact are in the normal temperature contact condition; Upper fixed contact is located at the upper end of armature contact, and upper fixed contact and armature contact are in the normal temperature released state; Upper fixed contact links to each other with thermistor by the PTC pad, and thermistor is then in the place in circuit.
Further, described thermistor is a kind of PTC thermistor.
Further, described thermal sensitive piece is a kind of bimetal leaf, and its sheet metal is high expanding noodles towards the one side of porcelain piece direction.
The beneficial effects of the utility model: when heating temp during greater than the thermal sensitive piece reset temperature, thermal sensitive piece can continue to be in the tripping state; In series circuit, electric current equates, in the different situation of resistance, the power of the PTC thermistor consumption in the circuit will be far longer than load, so the load caloric value is very little, has prevented from causing that because heater is overheated relevant security incident thing produces, only after manually circuit being disconnected, the PTC thermistor just can stop heating, and thermal sensitive piece no longer is heated, and resets to reset condition.Reached the effect of overheated sustainable protection load and circuit.This product safety is reliable, and PTC can Reusability, and the life-span is long.
Description of drawings
Fig. 1 is surface structure schematic diagram of the present utility model;
Fig. 2 is the A-A face cutaway view of Fig. 1;
Fig. 3 is circuit diagram of the present utility model.
Embodiment
Below in conjunction with Figure of description embodiment of the present utility model is described in detail.Obviously, described embodiment only is a part of embodiment of the present utility model, and other embodiment that those skilled in the art obtains under the prerequisite of not paying creative work belongs to protection range of the present utility model.
Such as Fig. 1, overheated power-off restoration protector shown in 2, comprise ceramics seat 1, thermistor 2, compressing tablet 3, lower fixed contact 4, armature contact 5, upper fixed contact 6, shell fragment 7, thermal sensitive piece 8, static line ear 9,10 by rivet 11,12 are fixed on the two ends of ceramics seat 1, shell fragment 7 is fixed on the ceramics seat by rivet 13, thermal sensitive piece 8 and shell fragment 7 mutual interlocks, armature contact 5 is arranged at an end of shell fragment 7, lower fixed contact 4 and upper fixed contact 6 fix with ceramics seat 1 by a patchcord ear 14, lower fixed contact 4 is located at the lower end of armature contact 5, and lower fixed contact 4 is in the normal temperature contact condition with armature contact 5; Upper fixed contact 6 is located at the upper end of armature contact 5, and upper fixed contact 6 is in the normal temperature released state with armature contact 5; Upper fixed contact 6 links to each other with thermistor 2 by PTC pad 15, and thermistor is then in the place in circuit.
As preferably, the thermistor in the utility model is a kind of PTC thermistor.
As preferably, the thermal sensitive piece in the utility model is a kind of bimetal leaf, and its sheet metal is high expanding noodles towards the one side of porcelain piece direction.
The operation principle of product in the energising use procedure: product is fixed on by the line ear by the electrical heating body, when the consumer electronics product in use, the heater heating, temperature rises, because of the principle of expanding with heat and contract with cold, when thermal sensitive piece reached set point when temperature, thermal sensitive piece was upwards jumped shell fragment is up pushed up, to armature contact is separated with lower fixed contact, armature contact engages with upper fixed contact simultaneously; This moment, the thermistor place in circuit generated heat rapidly.Heating temp makes thermal sensitive piece continue to be in the tripping state greater than the thermal sensitive piece reset temperature; Because the resistance of PTC (resistance R=3-7k) is far longer than load resistance (tens ohm), by I=U/R and W=I
2R as can be known, in series circuit, electric current equates, in the different situation of resistance, the power that the PTC in the circuit consumes will be far longer than load, so the load caloric value is very little, substantially can ignore.Prevented from causing that because heater is overheated relevant security incident thing produces, only after manually circuit being disconnected, PTC just can stop heating, and thermal sensitive piece no longer is heated, and resets to reset condition.Reached the effect of overheated sustainable protection load and circuit.This product safety is reliable, and PTC can Reusability, and the life-span is long.
More than; it only is preferred embodiment of the present utility model; but protection range of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection range of the present utility model.Therefore, protection range of the present utility model should be as the criterion with the protection range that claim was defined.
Claims (3)
1. one kind overheated power-off restoration protector, it is characterized in that: comprise ceramics seat, thermistor, compressing tablet, lower fixed contact, armature contact, upper fixed contact, shell fragment, thermal sensitive piece, the static line ear is established at the two ends of ceramics seat, shell fragment is fixed on the ceramics seat by rivet, the mutual interlock of thermal sensitive piece and shell fragment, armature contact is arranged at an end of shell fragment, lower fixed contact and upper fixed contact fix by line ear and ceramics seat, lower fixed contact is located at the lower end of armature contact, and lower fixed contact and armature contact are in the normal temperature contact condition; Upper fixed contact is located at the upper end of armature contact, and upper fixed contact and armature contact are in the normal temperature released state; Upper fixed contact links to each other with thermistor by the PTC pad, and thermistor is then in the place in circuit.
2. overheated power-off restoration protector according to claim 1, it is characterized in that: described thermistor is a kind of PTC thermistor.
3. overheated power-off restoration protector according to claim 1, it is characterized in that: described thermal sensitive piece is a kind of bimetal leaf, its sheet metal is high expanding noodles towards the one side of porcelain piece direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254543 CN203260531U (en) | 2013-05-10 | 2013-05-10 | Overheating power-off reset protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320254543 CN203260531U (en) | 2013-05-10 | 2013-05-10 | Overheating power-off reset protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203260531U true CN203260531U (en) | 2013-10-30 |
Family
ID=49473075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320254543 Expired - Lifetime CN203260531U (en) | 2013-05-10 | 2013-05-10 | Overheating power-off reset protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203260531U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752114A (en) * | 2015-04-21 | 2015-07-01 | 姚家米 | Overcurrent, overload and overheat protector |
| CN106486322A (en) * | 2016-12-30 | 2017-03-08 | 合肥舒实工贸有限公司 | Spring-piece type power-off restoration temperature controller |
| CN107633979A (en) * | 2017-10-13 | 2018-01-26 | 江苏常恒集团控制器件制品有限公司 | One kind power-off automatic reset overload protector |
| TWI674612B (en) * | 2018-07-03 | 2019-10-11 | 易湘雲 | Method for interrupting power supply to overheating power switch or utilization equipment |
| TWI674610B (en) * | 2018-07-03 | 2019-10-11 | 易湘雲 | Push button switch and conductor sheet thereof |
| TWI676200B (en) * | 2018-07-03 | 2019-11-01 | 易湘雲 | Switch with thermal breaker and power socket comprising such switch |
| TWI681432B (en) * | 2018-07-03 | 2020-01-01 | 易湘雲 | Switch with thermal breaker and power socket comprising such switch |
| TWI688982B (en) * | 2018-10-02 | 2020-03-21 | 易湘雲 | Thermal breaker, power switch, and method for assembling such |
-
2013
- 2013-05-10 CN CN 201320254543 patent/CN203260531U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104752114A (en) * | 2015-04-21 | 2015-07-01 | 姚家米 | Overcurrent, overload and overheat protector |
| CN106486322A (en) * | 2016-12-30 | 2017-03-08 | 合肥舒实工贸有限公司 | Spring-piece type power-off restoration temperature controller |
| CN107633979A (en) * | 2017-10-13 | 2018-01-26 | 江苏常恒集团控制器件制品有限公司 | One kind power-off automatic reset overload protector |
| TWI674612B (en) * | 2018-07-03 | 2019-10-11 | 易湘雲 | Method for interrupting power supply to overheating power switch or utilization equipment |
| TWI674610B (en) * | 2018-07-03 | 2019-10-11 | 易湘雲 | Push button switch and conductor sheet thereof |
| TWI676200B (en) * | 2018-07-03 | 2019-11-01 | 易湘雲 | Switch with thermal breaker and power socket comprising such switch |
| TWI681432B (en) * | 2018-07-03 | 2020-01-01 | 易湘雲 | Switch with thermal breaker and power socket comprising such switch |
| TWI688982B (en) * | 2018-10-02 | 2020-03-21 | 易湘雲 | Thermal breaker, power switch, and method for assembling such |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131030 |
|
| CX01 | Expiry of patent term |