CN202856102U - Power strip of router protected by temperature alarming - Google Patents
Power strip of router protected by temperature alarming Download PDFInfo
- Publication number
- CN202856102U CN202856102U CN 201220563332 CN201220563332U CN202856102U CN 202856102 U CN202856102 U CN 202856102U CN 201220563332 CN201220563332 CN 201220563332 CN 201220563332 U CN201220563332 U CN 201220563332U CN 202856102 U CN202856102 U CN 202856102U
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- temperature sensor
- power supply
- temperature
- housing
- socket
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Abstract
The utility model discloses a power strip of a router protected by temperature alarming. The power strip comprises a housing; a power line, which is provided with a plug, and is led out from the housing; a plurality of power supply sockets, which are connected with a power line, and can be used to supply power to the router; a first temperature sensor; and a second temperature sensor. The first temperature sensor and the second temperature sensor are connected with a buzzer by a comparison circuit UA, an emitter follower circuit UB, and an alarm execution circuit, which are disposed on a control circuit board. When the temperature difference between the first temperature sensor and the second temperature sensor exceeds the set value, the buzzer can give an alarm. An AC/DC power supply circuit can be used to supply power to the control circuit board, and the control circuit board, the second temperature sensor, and the buzzer are disposed in the housing, in addition, the first temperature sensor is disposed outside the opened housing. In the utility model, the double temperature sensors can be used for the detection and the alarming of the temperature rising of the power strip, therefore the use is safe and reliable, and the costs are low.
Description
Technical field
The utility model relates to the socket for the switching power supply.
Background technology
Be used for the socket (power extension socket) of router in use, all there are certain resistance in inner lead, copper latch, and when the electric current of load current such as router became large, therefore enclosure interior can produce temperature rise; In normal operating range, this temperature rise is acceptable.
When having used non-type contact pin, the copper latch is through lasting plug, perhaps in wet environment, use for a long time and can produce oxide layer, this oxide layer can cause contact pin and copper latch to produce larger contact resistance between the two, under large current conditions, this contact resistance can produce very large heat, and serious meeting is the scope that can bear of standarized component head and shoulders above, temperature rise is very high, can produce following hidden danger:
When high temperature toasted for a long time, the plastic housing of copper latch and corresponding site was melted in serious meeting, made it the heating distortion, but even fire hazard.
In order to address this problem, have in the prior art by disposable fusible link is installed overcurrent is protected, perhaps by being installed, recoverable bimetal element overload protector protects,
As previously described, the high heat that contact resistance increases or some other reason causes might not be that loop current has surpassed rated current, and overload protection device does not reach the condition of action, can not play a protective role.Even the thermostat of bimetal leaf has been installed, also can because of the impact that is subjected to ambient temperature, can't judge the intensification that ambient temperature causes or contact resistance is excessive and cause in the situation of large electric current.
The utility model content
The utility model is in order to overcome above-mentioned deficiency; a kind of socket by temperature alarming protection router has been proposed; adopt two temperature sensors; these of two temperature sensors are installed in the plastic housing of socket sealing; another is installed in outside the unlimited plastic housing; by the contrast temperature difference, temperature rise is reported to the police.
The technical solution of the utility model is:
A kind of socket by temperature alarming protection router; this socket comprises: housing; the power line with plug of drawing in the housing; the supply socket that several are connected with power line is installed in the housing; also comprise: the control circuit board that can export the overtemperature alarm signal; the first temperature sensor; the second temperature sensor and buzzer; the first temperature sensor; the second temperature sensor is connected with control circuit board with buzzer and is connected; control circuit board is powered by power line; control circuit board; the second temperature sensor and buzzer are installed in the housing, and the first temperature sensor is installed in outside the unlimited housing.
In order accurately to gather the temperature of housing, described the second temperature sensor is close to described housing.
In order accurately to gather the temperature of environment, described housing is provided with the hollow cylinder that an end opens wide, and described the first temperature sensor is installed in the hollow cylinder.
In order to improve further the effect of isolation case temperature, also comprise the secondary thermal insulation hollow cylinder that is arranged in the described hollow cylinder, described the first temperature sensor is installed in the secondary thermal insulation hollow cylinder, secondary thermal insulation hollow cylinder is provided with outer toroid, accordingly, hollow cylinder is provided with the draw-in groove supporting with this outer toroid, leaves for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder and the periphery of hollow cylinder.
Described control circuit board comprises:
The AC/DC power circuit, its input is connected with power line, its output DC source;
Comparison circuit UA, its positive input terminal one tunnel through resistance R 4 to power supply just, another road first temperature sensor is to power supply ground, its negative input end one tunnel through resistance R 5 to power supply just, another road second temperature sensor is to power supply ground, its output is through capacitor C 5 ground connection, and the first temperature sensor and the second temperature sensor have negative temperature coefficient;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the stiff end of potentiometer W1 connect power supply just with power supply ground, its positive input terminal one tunnel is connected through the output of resistance R 8 with comparison circuit UA, another road is connected to the output of emitter follower circuit UB through resistance R 9;
The warning executive circuit comprises triode Q3, and its base stage is through the output of resistance R 10 connection emitter follower circuit UB, and emitter connects power supply ground, and collector electrode is just connecting power supply through buzzer SP.
As preferably, described the first temperature sensor is the NPN transistor, its base stage and the positive input terminal that is connected to comparison circuit UA after collector electrode is connected, and emitter connects power supply ground, parallel resistance R6 between base stage and the emitter; Described the second temperature sensor is the NPN transistor, its base stage and the negative input end that is connected to comparison circuit UA after collector electrode is connected, and emitter connects power supply ground, parallel resistance R7 between base stage and the emitter.
In order to improve anti-interference, the positive input terminal of described comparison circuit UA and negative input end shunt capacitance C4.
The utility model detects, reports to the police by the intensification of double temperature sensor to socket, has the beneficial effect safe and reliable, that cost is low.
Description of drawings
Fig. 1 is electrical schematic diagram of the present utility model.
Fig. 2 is the relevant partial structurtes schematic diagram of the utility model the first temperature sensor.
Embodiment
Now by reference to the accompanying drawings the utility model is further described:
Extremely shown in Figure 2 such as Fig. 1; a kind of socket by temperature alarming protection router; this socket comprises: housing 1; housing 1 is synthetic by first and second; what show among Fig. 2 is second; the power line with plug of drawing in the housing 1; the supply socket that several are connected with power line is installed in the housing 1; also comprise: the control circuit board that can export the overtemperature alarm signal; the first temperature sensor 3; the second temperature sensor and buzzer; the first temperature sensor 3; the second temperature sensor is connected with control circuit board with buzzer and is connected; control circuit board is powered by power line; control circuit board; the second temperature sensor and buzzer are installed in the housing 1, and the first temperature sensor 3 is installed in outside the unlimited housing 1.
The second temperature sensor is close to described housing 1.
Housing 1 is provided with unlimited hollow cylinder 11, the first temperature sensors 3 of an end and is installed in the hollow cylinder 11.
Also comprise the secondary thermal insulation hollow cylinder 21 that is arranged in the hollow cylinder 11, the first temperature sensor 3 is installed in the secondary thermal insulation hollow cylinder 21, secondary thermal insulation hollow cylinder 21 is provided with outer toroid 22, accordingly, hollow cylinder 11 is provided with the draw-in groove supporting with this outer toroid 22, leaves for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder 21 and the periphery of hollow cylinder 11.
Control circuit board comprises:
The AC/DC power circuit, its input is connected its output output DC source with L in the power line with the N phase line;
Comparison circuit UA, its positive input terminal one tunnel through resistance R 4 to power supply just, another road first temperature sensor 3 is to power supply ground, its negative input end one tunnel through resistance R 5 to power supply just, another road second temperature sensor is to power supply ground, its output is through capacitor C 5 ground connection, and the first temperature sensor 3 and the second temperature sensor have negative temperature coefficient; The positive input terminal of comparison circuit UA and negative input end shunt capacitance C4;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the stiff end of potentiometer W1 connect power supply just with power supply ground, its positive input terminal one tunnel is connected through the output of resistance R 8 with comparison circuit UA, another road is connected to the output of emitter follower circuit UB through resistance R 9;
The warning executive circuit comprises triode Q3, and its base stage is through the output of resistance R 10 connection emitter follower circuit UB, and emitter connects power supply ground, and collector electrode is just connecting power supply through described buzzer SP.Be connected in parallel on the two ends of buzzer SP after 12 series connection of indicator light LED and resistance R, the base stage of triode Q3 to be parallel with resistance R 11.
Except selecting common thermistor as the temperature sensor, the first temperature sensor 3 also can be selected NPN transistor Q1, its base stage and the positive input terminal that is connected to comparison circuit UA after collector electrode is connected, emitter connects power supply ground, parallel resistance R6 between base stage and the emitter; In like manner, the second temperature sensor is also selected NPN transistor Q2, its base stage and the negative input end that is connected to comparison circuit UA after collector electrode is connected, and emitter connects power supply ground, parallel resistance R7 between base stage and the emitter.
Basic principle of the present utility model is, when the electrical equipment in the socket such as router are more, because the contact resistance heating causes that the socket temperature raises, the first temperature sensor, the second temperature sensor are input to comparison circuit UA with the socket case temperature that collects and ambient temperature signal and compare, and result relatively reports to the police through emitter follower circuit UB control warning executive circuit again.
The utility model not only can be used for the electrical equipment of router as load, can also be for the protection of other electrical equipment, and principle is identical.
Although be by the mode of illustrating and give an example the utility model to be described further here; but should be realized that; the utility model is not limited to the above-described embodiment and examples; it is illustrative that the description of preamble only is considered to; and it is nonrestrictive; those skilled in the art can make multiple conversion or modification, as long as no leaving the scope and spirit essence of establishing in this claim, all are considered as within protection range of the present utility model.
Claims (7)
1. socket by temperature alarming protection router; this socket comprises: housing; the power line with plug of drawing in the housing; the supply socket that several are connected with power line is installed in the housing; it is characterized in that; also comprise: the control circuit board that can export the overtemperature alarm signal; the first temperature sensor; the second temperature sensor and buzzer; the first temperature sensor; the second temperature sensor is connected with control circuit board with buzzer and is connected; control circuit board is powered by power line; control circuit board; the second temperature sensor and buzzer are installed in the housing, and the first temperature sensor is installed in outside the unlimited housing.
2. the socket by temperature alarming protection router as claimed in claim 1, it is characterized in that: described the second temperature sensor is close to described housing.
3. the socket by temperature alarming protection router as claimed in claim 1, it is characterized in that: described housing is provided with the hollow cylinder that an end opens wide, and described the first temperature sensor is installed in the hollow cylinder.
4. the socket by temperature alarming protection router as claimed in claim 3; it is characterized in that: also comprise the secondary thermal insulation hollow cylinder that is arranged in the described hollow cylinder; described the first temperature sensor is installed in the secondary thermal insulation hollow cylinder; secondary thermal insulation hollow cylinder is provided with outer toroid; accordingly; hollow cylinder is provided with the draw-in groove supporting with this outer toroid, leaves for heat insulation space between the outer circumference surface of secondary thermal insulation hollow cylinder and the periphery of hollow cylinder.
5. such as each described socket by temperature alarming protection router of claim 1 to 4, it is characterized in that: described control circuit board comprises:
The AC/DC power circuit, its input is connected with power line, its output DC source;
Comparison circuit UA, its positive input terminal one tunnel through resistance R 4 to power supply just, another road first temperature sensor is to power supply ground, its negative input end one tunnel through resistance R 5 to power supply just, another road second temperature sensor is to power supply ground, its output is through capacitor C 5 ground connection, and the first temperature sensor and the second temperature sensor have negative temperature coefficient;
Emitter follower circuit UB, its negative input end is connected with the movable end of potentiometer W1, the stiff end of potentiometer W1 connect power supply just with power supply ground, its positive input terminal one tunnel is connected through the output of resistance R 8 with comparison circuit UA, another road is connected to the output of emitter follower circuit UB through resistance R 9;
The warning executive circuit comprises triode Q3, and its base stage is through the output of resistance R 10 connection emitter follower circuit UB, and emitter connects power supply ground, and collector electrode is just connecting power supply through described buzzer SP.
6. the socket by temperature alarming protection router as claimed in claim 5, it is characterized in that: described the first temperature sensor is the NPN transistor, its base stage and the positive input terminal that is connected to comparison circuit UA after collector electrode is connected, emitter connects power supply ground, parallel resistance R6 between base stage and the emitter; Described the second temperature sensor is the NPN transistor, its base stage and the negative input end that is connected to comparison circuit UA after collector electrode is connected, and emitter connects power supply ground, parallel resistance R7 between base stage and the emitter.
7. the socket by temperature alarming protection router as claimed in claim 6 is characterized in that: the positive input terminal of described comparison circuit UA and negative input end shunt capacitance C4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563332 CN202856102U (en) | 2012-10-29 | 2012-10-29 | Power strip of router protected by temperature alarming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220563332 CN202856102U (en) | 2012-10-29 | 2012-10-29 | Power strip of router protected by temperature alarming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202856102U true CN202856102U (en) | 2013-04-03 |
Family
ID=47987260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220563332 Withdrawn - After Issue CN202856102U (en) | 2012-10-29 | 2012-10-29 | Power strip of router protected by temperature alarming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202856102U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891410A (en) * | 2012-10-29 | 2013-01-23 | 杭州凯特电器有限公司 | Extension socket capable of protecting router through temperature alarm |
| CN107564231A (en) * | 2017-09-15 | 2018-01-09 | 山东建筑大学 | Building fire early warning and fire disaster situation assessment system and method based on Internet of Things |
| CN107564232A (en) * | 2017-09-15 | 2018-01-09 | 山东建筑大学 | A kind of electric fire disaster warning System and method for based on Internet of Things |
| CN114096818A (en) * | 2019-06-28 | 2022-02-25 | X开发有限责任公司 | Enhanced ambient temperature detection |
-
2012
- 2012-10-29 CN CN 201220563332 patent/CN202856102U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891410A (en) * | 2012-10-29 | 2013-01-23 | 杭州凯特电器有限公司 | Extension socket capable of protecting router through temperature alarm |
| CN107564231A (en) * | 2017-09-15 | 2018-01-09 | 山东建筑大学 | Building fire early warning and fire disaster situation assessment system and method based on Internet of Things |
| CN107564232A (en) * | 2017-09-15 | 2018-01-09 | 山东建筑大学 | A kind of electric fire disaster warning System and method for based on Internet of Things |
| CN107564232B (en) * | 2017-09-15 | 2020-02-21 | 山东建筑大学 | Electrical fire early warning system and method based on Internet of things |
| CN114096818A (en) * | 2019-06-28 | 2022-02-25 | X开发有限责任公司 | Enhanced ambient temperature detection |
| US11852540B2 (en) | 2019-06-28 | 2023-12-26 | X Development Llc | Enhanced ambient temperature detection |
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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: 20130403 Effective date of abandoning: 20141029 |
|
| RGAV | Abandon patent right to avoid regrant |