CN205609881U - Children's safety wall supply socket - Google Patents
Children's safety wall supply socket Download PDFInfo
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- CN205609881U CN205609881U CN201620189351.6U CN201620189351U CN205609881U CN 205609881 U CN205609881 U CN 205609881U CN 201620189351 U CN201620189351 U CN 201620189351U CN 205609881 U CN205609881 U CN 205609881U
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Abstract
The utility model relates to a children's safety wall supply socket, it includes casing and control panel, the casing is divided into front panel and back housing, be equipped with power output jack, hot electric infrared probe and the power indicator of releasing on the front panel, be equipped with the power input terminal on the back housing, the casing is inside be equipped with the control panel and power conversion module is equipped with and the load insert differentiate, load current differentiates, human being close differentiate and logic control drive circuit, wherein the human body is close can the perception human socket that is close to of discrimination circuit, and the load inserts discrimination circuit and has solved and do not have power output to survey not dao load current, can do not declare the contradiction that the load access again can not export power supply. The utility model discloses a children's safety wall supply socket, through be close to the human body, the load inserts and the logic of circular telegram output is differentiated, there being human being close to and just start power output when having inserted the load, prevents effectively that human especially children from touching supply socket's danger carelessly.
Description
Technical field
This utility model relates to household safe electrical domain, particularly relates to a kind of children's safety metope supply socket.
Background technology
Household electricity be unable to do without supply socket, the metope in house, room is typically equipped with multiple supply socket, is available for household electrical appliance and patches use.But, if family has the most sensible, the most active child, it is possible to can remove to touch supply hub with hands, or can insert in power hole with filament, thus have the danger of electric shock.For avoiding the generation of fatal accident, on market or occur in that the child-resistant electric shock socket of various multi-form in publicity.Have employed safety door, safety guard, protection cap, the safety lock etc. that have prevent the touching socket of child; the superabsorbent fibrous material set that then have employed having prevents the finger contact socket of humidity, and also have claims that employing sensing contact and inductive switch can could trigger power on etc. when external plug is inserted.
For using this class device such as safety door, protective cover, still cannot be avoided child when loosening, come off or opening and touch socket；For using the imagination of absorbent material etc., it is impossible to getting across from principle is how to prevent human electric shock；And for using sensing contact, inductive switch etc., power supply output can be triggered equally when other metal material gos deep in supply hub, therefore, these anti-electric shock sockets can't completely, be reliably prevented human body particularly child and accidentally touch the danger of supply socket.
Utility model content
For solving above-mentioned technical problem, a kind of children's safety metope supply socket that this utility model provides, its purpose is to reach metope supply socket can be according to the logic arranged to differentiate output, seek to realize: with electric loading access and do not have human body near time do not have power supply to export, export still without power supply when there being human body near also access electric loading, power supply is just had to export after useful electric loading accesses and human body has been moved off, have been turned on have again after electric loading human body near time still keep power supply to export, power supply is no longer had to export after disconnecting by electric loading, until connect load also human body to recover the effect of power supply output after leaving again next time, thus can very effectively prevent human body from accidentally touching supply socket, particularly prevent child from the danger of electric shock accidents occurring.
This utility model solves above-mentioned technical problem and be the technical scheme is that a kind of children's safety metope supply socket, it includes housing and panel, described housing is divided into front panel and rear casing, described front panel is provided with power supply output plughole, pyroelectric infrared transducer and power supply indicator, and described rear casing is provided with power input terminal；Described enclosure interior is provided with panel and accesses judging circuit, load current judging circuit, human body proximity judging circuit and logic control drive circuit equipped with power transfer module, load.
Described front panel both sides are provided with installing hole, and with covering the frame set of installing hole；Being fixed with panel on rear side of described front panel, described rear casing is buckled into one with front panel after covering panel.
Power input terminal on described rear casing is divided into L pole, N pole and E pole, wherein L pole, N pole are connected with exchange input L end, the N end of internal panel power source modular converter respectively, and the E pole in described rear casing power source input terminal is directly connected to the E pole of power supply output plughole.
Described power transfer module is made up of AC-DC translation circuit, and its DC output end connects load respectively and accesses the low-pressure side of judging circuit, load current judging circuit, human body proximity judging circuit and the power end of logic control drive circuit.
Described load accesses judging circuit and is made up of high-pressure side sampling element and low-pressure side coupling element, its on high-tension side L end, N end are also connected with L pole, the N pole of power input terminal, it is made up of diode D1, resistance R3, Zener diode W1, photoelectric coupled circuit B1, audion V2 element inside high-pressure side, and provides sampled signal through resistance R5 to audion V2 by resistance R4, resistance RF；Coupled output signal F1 is connected to first input of logic control drive circuit by its low-pressure side by photoelectric coupled circuit B1 and resistance R2 element.
The input H1 of described load current judging circuit and the input H2 of load current judging circuit connects the outfan of current transformer, penetrating the L line on power supply output line road in the input hole of described current transformer, the outfan F2 of described load current judging circuit is connected to second input of logic control drive circuit.
The input T1 of described human body proximity judging circuit and the input T2 of human body proximity judging circuit connects pyroelectric infrared transducer, and the outfan F3 of described human body proximity judging circuit is connected to the 3rd input of logic control drive circuit.
The outfan KZ of described logic control drive circuit connects resistance R1, audion V1 and drives the coil of two-way relay J 1, the L pole of a side joint power input of the J1-1 contact of described two-way relay J 1, the L pole of another side joint front panel power source output plughole；The N pole of one side joint power input of the J1-2 contact of described two-way relay J 1, the N pole of another side joint front panel power source output plughole.
It is attempted by after described power supply indicator series diode D2 and resistance R6 between L pole and the N pole of front panel power supply output plughole.
The beneficial effects of the utility model are: a kind of children's safety metope supply socket of the present utility model, have employed rpyroelectric infrared detecting element, can be with perception human body near supply socket；Have employed micro-current coupling element, solve and be not switched on during power supply output measuring load current, sentence that access less than load cannot the contradiction of out-put supply；The logic distinguishing circuit used can control power supply output by the security factor set, this assures metope supply socket when exposing and have human body to touch, do not have power supply output, therefore there is no concern that the danger that children from getting electric shock occurs, thus ensure that the safety of household electricity.
Accompanying drawing explanation
Fig. 1 is the contour structures schematic diagram of a kind of children's safety metope supply socket of embodiment；
Fig. 2 is the rear structure schematic diagram of a kind of children's safety metope supply socket of embodiment；
Fig. 3 is the overall control circuit figure of a kind of children's safety metope supply socket of embodiment；
Fig. 4 is the logic discrimination schematic diagram of a kind of children's safety metope supply socket of embodiment；
Wherein, 1-front panel, 1a-L pole output plughole, 1b-N pole output plughole, 1c-E pole output plughole, 1d-installing hole, 2-rear casing, 2a-L pole input terminal, 2b-N pole input terminal, 2c-E pole input terminal, 2d-groove, 3-frame set, 4-pyroelectric infrared transducer, 5-power supply indicator, 6-panel, 6a-power transfer module, 6b-load accesses judging circuit, 6c-load current judging circuit, 6d-human body proximity judging circuit, 6e-logic control drive circuit, 7-current transformer.
Detailed description of the invention
In order to deepen understanding of the present utility model, being described in further detail this utility model below in conjunction with drawings and Examples, this embodiment is only used for explaining this utility model, does not constitute protection domain of the present utility model and limits.
Embodiment
As shown in Figure 1 and Figure 2, being a kind of children's safety metope supply socket profile and rear structure figure, it includes housing and panel 6, and described housing is divided into front panel 1 and rear casing 2, it is internal that described panel 6 is fixed on front panel 1, and rear casing 2 snaps together with front panel after covering panel 6.Described front panel 1 is provided with three core power supply output plugholes, wherein comprises L pole output plughole 1a, N pole output plughole 1b and E pole output plughole 1c, is available for household appliances equipment and patches use.Being additionally provided with pyroelectric infrared transducer 4 and power supply indicator 5 on described front panel 1, described pyroelectric infrared transducer 4 is a kind of infrared ray sensor being dedicated as detecting human body radiation；Described power supply indicator 5 uses LED diode, sends HONGGUANG when supply socket has electricity output；It is respectively provided with an installing hole 1d in the both sides of described front panel 1, when being used for installing, penetrates screw, general back box pre-buried in wall jack and metope can be fixed；Also frame set 3 is buckled on described front panel 1, in order to cover installation screw so that the socket surface exposed is more attractive in appearance after installing wall jack.Described rear casing 2 is provided with three power input terminals, described power input terminal comprises L pole input terminal 2a, N pole input terminal 2b and E pole input terminal 2c, for the wiring of external input power, the both sides of described rear casing 2 are also designed to groove, can avoid the shank of screw penetrated when installing.
As shown in Figure 3, it it is the overall control circuit figure of a kind of children's safety metope supply socket, in figure, the control circuit on panel 6 is broadly divided into power transfer module 6a, load accesses judging circuit 6b, load current judging circuit 6c, human body proximity judging circuit 6d and logic control drive circuit 6e, the inside of described power transfer module 6a is an AC-DC permutator power supply, its input is directly connected with L, N line of external ac power source, outfan is direct current+5V voltage, provides low-voltage direct working power to each control circuit judge.
Described load at Fig. 3 accesses in judging circuit 6b, is a kind of special circuit that can judge that when access failure power supply exports load accesses；Because from safety considerations, when the jack in wall jack does not access load plug and exposes, jack should not switch on power, but does not detects again load current when disconnecting power supply output；For solving this contradiction, this circuit have employed the principle of similar test pencil: when our hand-held test pencil the metal part that contacts rear end, and when electroprobe head is touched the live wire L pole of alternating current power supply, human body can't get an electric shock, because the inside of electroprobe has sealed in the resistance of high value, the most several faint safe currents are through human body and the earth, it is possible to light the luminous neon bulb in electroprobe；In like manner, the resistance R4 that have employed a megohm of level in described load access judging circuit 6b is connected between input power L line and L pole output plughole 1a, and uses the resistance R5 of another megohm of level to be connected between N pole output plughole 1b and the base stage of an audion V2；So, when socket not having power supply export, i.e. use hands to touch supply hub, also ensure that the safety of human body；When there being external load plug insert wall jack and open Household appliance switch, just access load resistance RF, the live wire L of alternating current power supply just creates a micro voltage signal through series resistance R4, R5 and RF, this signal just can drive audion V2 to turn on, make to be attempted by the loop conducting of D1, R3, W1, the V2 at alternating current power supply two ends and optocoupler B1 input side, thus cause the outlet side of photoelectric coupled circuit B1 to be also switched on, F1 point just transfers high level to from low level, and this signal is exactly the available load access signal when not having socket power to export.
In the described load current judging circuit 6c of Fig. 3, the operating current of external load need to be detected by current transformer 7, the input hole of described current transformer 7 penetrates the L line of power circuit, its output terminates H1 and the H2 end of described load current judging circuit 6c, when wall jack has accessed load, and load open after when making socket have out-put supply, the input side opening of described current transformer 7 cause outlet side produce faradic current small-signal because of there being electric current to flow through, this signal makes the outfan F2 of described load current judging circuit 6c present high level after amplifying；When electrical equipment load turns off, the input of described current transformer 7 does not has electric current, output does not has faradic current yet, thus the outfan F2 of described load current judging circuit 6c changes into low level, and the level variable signal of this F2 end is exactly the differentiation signal of load current.
In the described human body proximity judging circuit 6d of Fig. 3, have employed an external pyroelectric infrared transducer 4, described pyroelectric infrared transducer 4 is exposed at the top on front panel 1 surface, this is the detecting element of a kind of high Seebeck coefficient material, the wave-length coverage of its detection is identical with the heat wave length of human body, add and upper optics lens closes, can be adjusted to detect the activity of human body in the range of wall jack one to two meter；So, when there being the front panel 1 of close wall jack, the infra-red radiation received just is transformed into faint voltage signal, then the amplification through oversampling circuit midfield effect pipe by described pyroelectric infrared transducer 4, so that it may make the outfan F3 of described human body proximity judging circuit 6d present high level；When human body leaves the front panel 1 of wall jack, its outfan F3 just changes into low level.
In the described logic control drive circuit 6e of Fig. 3, its input summarizes F1, F2 and F3 signal, its internal judging circuit using multiple COMS digit-logic circuit chips composition, by the electric shock-prevention safety key element set, input signal can be differentiated, its outfan KZ is through the base stage of current-limiting resistance R1 rear drive audion V1, the grounded emitter of audion V1, the coil of the collector series connection two-way relay J 1 of V1 is followed by+5V working power；When the outfan KZ of described logic control drive circuit 6e is high level, audion V1 conducting, the coil of two-way relay J 1 obtain electric after make J1-1 and the J1-2 closing of contact, the jack on described front panel 1 has power supply to export；When KZ end is low level, after the coil losing electricity of two-way relay J 1, make J1-1 and J1-2 contact disconnect, the jack on described front panel 1 does not just have power supply to export.
As shown in Figure 4, it is the logic discrimination schematic diagram of a kind of children's safety metope supply socket；This logic distinguishing circuit is integrated in the inside of described logic control drive circuit 6e, mainly have employed 2 phase inverters and 3 NAND gate circuits, this circuit unit uses+5V power supply to power, and its function differentiated can make analysis below according to the logic discrimination truth table of table 1:
Table 1 logic discrimination truth table
A) socket do not access load F1=0, no-load current F2=0, unmanned close to socket F3=0 time, without driving output KZ=0, socket electrode no power.
B) non-loaded access socket F1=0, no-load current F2=0, have people close to socket F3=1 time, still without drive output KZ=0, socket electrode still no power.
C) connect with electric loading F1=1, no-load current F2=0, have people close to socket F3=1 time, still without drive output KZ=0, socket electrode also no power.
D) the most above-mentioned state, as human body already out socket F3=0, driving output KZ=1, socket electrode is had to be energized, there is a load current F2=1, now due to the Guan Bi of J1-2 contact of two-way relay so that between base stage and the emitter stage of V2 audion, voltage is zero, therefore, the output F1=0 that described load accesses judging circuit is low level, so sentencing the access less than load, but this does not affect the state of socket out-put supply.
E) the most above-mentioned state, if human body is again close to socket F3=1, remains in that driving output KZ=1, socket electrode are still energized, still sentences and access F1=0 less than load, have load current F2=1, electricity consumption load continuous is energized.
F) the most above-mentioned state, if human body is again close to socket F3=1, and turns off with electric loading, no-load current F2=0, without driving output KZ=0, socket electrode with regard to power-off.
G) the most above-mentioned state, if human body leaves socket again, the output of socket returns to initial state, if again to open by electric loading and make wall jack out-put supply, will repeat human body proximity, connect plug, connect load, human body leave, just have the process that power supply exports.
Pass through technique scheme, a kind of children's safety metope supply socket of the present utility model, human body proximity is judged, with the access of electric loading with the electrical condition of electric loading by the circuit using electronic component to constitute, especially with pyroelectric infrared transducer and micro-current coupling circuit, human body can be detected the most delicately near supply socket, can solve to be not switched on during power supply output to detect load current, sentence that access less than load cannot the contradiction of out-put supply；Make the jack of metope supply socket when not accessing electrical equipment and expose, do not have power supply output；Human body near wall jack and do not open use electric loading time, do not have power supply to export yet；Only connect by electric loading in wall jack, and by load power source switch connection, then after waiting that human body leaves, wall jack just has power supply to export.So, whether human body touches the jack of power supply accidentally, or naughty child plays with supply hub, the danger got an electric shock all without generation, makes a kind of children's safety metope supply socket of the present utility model become the ideal chose of household safe electricity consumption accessory.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (9)
1. a children's safety metope supply socket, it is characterized in that: it includes housing and panel, described housing is divided into front panel and rear casing, described front panel to be provided with power supply output plughole, pyroelectric infrared transducer and power supply indicator, and described rear casing is provided with power input terminal；Described enclosure interior is provided with panel and accesses judging circuit, load current judging circuit, human body proximity judging circuit and logic control drive circuit equipped with power transfer module and load.
A kind of children's safety metope supply socket the most according to claim 1, it is characterised in that: described front panel both sides are provided with installing hole, and with covering the frame set of installing hole；Being fixed with panel on rear side of described front panel, described rear casing is buckled into one with front panel after covering panel.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: the power input terminal on described rear casing is divided into L pole, N pole and E pole, wherein L pole, N pole are connected with exchange input L end, the N end of internal panel power source modular converter respectively, and the E pole in described rear casing power source input terminal is directly connected to the E pole of power supply output plughole.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: described power transfer module is made up of AC-DC translation circuit, its DC output end connects load respectively and accesses the low-pressure side of judging circuit, load current judging circuit, human body proximity judging circuit and the power end of logic control drive circuit.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: described load accesses judging circuit and is made up of high-pressure side sampling element and low-pressure side coupling element, its on high-tension side L end, N end are also connected with L pole, the N pole of power input terminal, it is made up of diode D1, resistance R3, Zener diode W1, photoelectric coupled circuit B1, audion V2 element inside high-pressure side, and provides sampled signal through resistance R5 to audion V2 by resistance R4, resistance RF；Coupled output signal F1 is connected to first input of logic control drive circuit by its low-pressure side by photoelectric coupled circuit B1 and resistance R2 element.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: the input H1 of described load current judging circuit and the input H2 of load current judging circuit connects the outfan of current transformer, penetrating the L line on power supply output line road in the input hole of described current transformer, the outfan F2 of described load current judging circuit is connected to second input of logic control drive circuit.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: the input T1 of described human body proximity judging circuit and the input T2 of human body proximity judging circuit connects pyroelectric infrared transducer, the outfan F3 of described human body proximity judging circuit is connected to the 3rd input of logic control drive circuit.
A kind of children's safety metope supply socket the most according to claim 1, it is characterized in that: the outfan KZ of described logic control drive circuit connects resistance R1, audion V1 and drives the coil of two-way relay J 1, the L pole of one side joint power input of the J1-1 contact of described two-way relay J 1, the L pole of another side joint front panel power source output plughole；The N pole of one side joint power input of the J1-2 contact of described two-way relay J 1, the N pole of another side joint front panel power source output plughole.
A kind of children's safety metope supply socket the most according to claim 1, it is characterised in that: it is attempted by after described power supply indicator series diode D2 and resistance R6 between L pole and the N pole of front panel power supply output plughole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189351.6U CN205609881U (en) | 2016-03-11 | 2016-03-11 | Children's safety wall supply socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620189351.6U CN205609881U (en) | 2016-03-11 | 2016-03-11 | Children's safety wall supply socket |
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| Publication Number | Publication Date |
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| CN205609881U true CN205609881U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201620189351.6U Active CN205609881U (en) | 2016-03-11 | 2016-03-11 | Children's safety wall supply socket |
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| CN (1) | CN205609881U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633739A (en) * | 2016-03-11 | 2016-06-01 | 苏州工业园区科佳自动化有限公司 | Child-safety wall power socket |
-
2016
- 2016-03-11 CN CN201620189351.6U patent/CN205609881U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633739A (en) * | 2016-03-11 | 2016-06-01 | 苏州工业园区科佳自动化有限公司 | Child-safety wall power socket |
| CN105633739B (en) * | 2016-03-11 | 2017-12-05 | 苏州工业园区科佳自动化有限公司 | A kind of children's safety metope power outlet |
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