CN107425338A - A kind of safety power supply base device - Google Patents

A kind of safety power supply base device Download PDF

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Publication number
CN107425338A
CN107425338A CN201710650518.3A CN201710650518A CN107425338A CN 107425338 A CN107425338 A CN 107425338A CN 201710650518 A CN201710650518 A CN 201710650518A CN 107425338 A CN107425338 A CN 107425338A
Authority
CN
China
Prior art keywords
chamber
arm
groove
power supply
sliding
Prior art date
Application number
CN201710650518.3A
Other languages
Chinese (zh)
Inventor
潘云江
Original Assignee
潘云江
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 潘云江 filed Critical 潘云江
Priority to CN201710650518.3A priority Critical patent/CN107425338A/en
Publication of CN107425338A publication Critical patent/CN107425338A/en

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/44Means for preventing access to live contacts
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/631Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only

Abstract

The invention discloses a kind of safety power supply base device, including the plug socket being fixedly mounted in wall and the connection-peg body being connected with household electrical appliance, the opening symmetrical above and below that is provided with is towards the upper slotting chamber and underthrust chamber on the right side in plug socket, it is upper to insert the sliding groove that connection is provided between chamber and underthrust chamber, sliding cavity of the opening towards sliding groove is provided with sliding groove left end wall, the upper groove that chamber is inserted in connection is provided with sliding cavity roof, the lower groove of connection underthrust chamber is provided with sliding cavity bottom wall, upper sliding shoe and downslide motion block symmetrical above and below are slidably fitted with sliding groove, the upper travelling arm stretched into groove and the downslide swing arm stretched into lower groove are slidably fitted with sliding cavity, lower linking arm is installed between upper travelling arm lower end and downslide motion block upper end, linking arm is installed between downslide swing arm upper end and upper sliding shoe lower end.

Description

A kind of safety power supply base device
Technical field
The present invention relates to the power supply field of household electrical appliance, specially a kind of safety power supply base device.
Background technology
It is well known that children have curiosity to all things on earth, certainly, common plug socket will not also be let off at home, youngster Child can be inserted into plug socket using hair clip, key or other things, and in traditional family expenses plug socket, power supply piece is almost outer Be exposed in slotting chamber, the inserted sheet of connection-peg body is inserted into slotting chamber and electric equipment can be made to be powered, and if children using hair clip, Key or other things, which are inserted into this family expenses plug socket, can occur electric shock accidents, die from the children of electric shock accidents every year still Much, therefore, there is very big potential safety hazard in traditional power supply plug socket.
The content of the invention
It is an object of the invention to provide a kind of safety power supply base device, for overcoming drawbacks described above of the prior art.
According to a kind of safety power supply base device of the present invention, including the plug socket and and family expenses being fixedly mounted in wall The connection-peg body of electrical equipment connection, in the plug socket opening symmetrical above and below that is provided with towards the upper slotting chamber and underthrust chamber on the right side, it is described on The sliding groove that connection is provided between chamber and underthrust chamber is inserted, opening is provided with the sliding groove left end wall towards the sliding groove Sliding cavity, be provided with the upper groove for connecting the upper slotting chamber in the sliding cavity roof, be provided with the sliding cavity bottom wall The lower groove of the underthrust chamber is connected, upper sliding shoe and downslide motion block symmetrical above and below, institute are slidably fitted with the sliding groove The downslide swing arm that the upper travelling arm stretched into the upper groove is slidably fitted with sliding cavity and is stretched into the lower groove is stated, Lower linking arm, the downslide swing arm upper end and institute are installed between the upper travelling arm lower end and the downslide motion block upper end State and be installed with linking arm between sliding shoe lower end, be provided with through hole in the lower linking arm, on the upper travelling arm End and the downslide swing arm lower end are installed with power supply shell fragment and lower power supply shell fragment respectively, and it is right up and down to be gone back in the plug socket Title is provided with opening and is respectively facing the upper telescopic chute of the upper slotting chamber and underthrust chamber and lower telescopic chute, and the upper telescopic chute is stretched with Contracting groove is slidably fitted with telescopic arm and lower telescopic arm respectively, and is also separately installed with the upper telescopic chute and lower telescopic chute Contact-making switch and lower contact-making switch;The connection-peg body left side is symmetrical above and below to be provided with arms and lower arms, described upper to insert Arm and lower arms left side are provided with effect inclined-plane.
Further technical scheme, the upper sliding shoe upper end and downslide motion block lower end are provided with and the effect inclined-plane The first top pressure inclined-plane being engaged, symmetrical above and below in the sliding groove right-hand member wall to be provided with the first guide groove, described first is oriented to First be connected with the upper sliding shoe and downslide motion block is slidably fitted with groove and is oriented to protrusion, first guide groove is also fixed The first top pressure spring for being oriented to protrusion with described first and offseting is installed.
Further technical scheme, the upper telescopic arm upper end and lower telescopic arm lower end are provided with and the effect inclined-plane It is provided with the second guide groove in the second top pressure inclined-plane being engaged, the upper telescopic chute and lower telescopic chute two side, described Second be fixedly connected with the upper telescopic arm upper end and lower telescopic arm is slidably fitted with two guide grooves and is oriented to protrusion, described the The second top pressure spring for being oriented to protrusion with described second and offseting also is installed with two guide grooves.
The thickness of further technical scheme, the upper arms and lower arms respectively with the upper slotting chamber and the width of underthrust chamber Spend equal.
The beneficial effects of the invention are as follows:
Because the plug socket in apparatus of the present invention is in original state, the first top pressure inclined-plane and downslide swing arm of the upper travelling arm The first top pressure inclined-plane stretched into respectively by top pressure in the presence of first top pressure spring on described insert chamber and underthrust chamber in, and The upper power supply shell fragment and lower power supply shell fragment are contracted in the upper groove and lower groove respectively, and therefore, children use metallic rod When part is inserted into slotting chamber, the metal rod can not contact with the upper power supply shell fragment, and metal rod is inserted into underthrust During chamber, metal rod can not contact with the lower power supply shell fragment, therefore, electric shock accidents will not occur;
And during original state, the second top pressure inclined-plane of the upper telescopic arm upper end and the second top pressure inclined-plane of lower telescopic arm are described Stretched into respectively by top pressure in the upper slotting chamber and underthrust chamber in the presence of second top pressure spring, and the upper telescopic arm and it is described under The medial extremity of telescopic arm disconnects with the upper contact-making switch and lower contact-making switch respectively to be contacted, therefore, if can not make on described Telescopic arm and lower telescopic arm are retracted in telescopic chute and lower telescopic chute respectively would not make the upper power supply shell fragment and lower power supply Shell fragment is powered, and therefore, considerably increases electrical safety;
When needing to power to household electrical appliance, the upper arms and lower arms are inserted respectively into the upper slotting chamber and underthrust chamber, When the connection-peg body left side is bonded with the plug socket right side, the upper sliding shoe and downslide motion block are received completely respectively In the sliding groove, the upper power supply shell fragment and lower power supply shell fragment are respectively protruding into the upper slotting chamber and underthrust chamber and distinguished for contracting Supported with the upper arms and lower arms split-phase, due to the upper telescopic arm and lower telescopic arm also to contract and respectively with it is described on Contact-making switch and the contact of lower contact-making switch, so as to which the upper contact-making switch and lower contact-making switch can make the upper power supply shell fragment respectively It is powered with lower power supply shell fragment, the connection-peg thus can be made to be powered and realize the energization to electric equipment;
Apparatus of the present invention are simple in construction, easy to use, can substantially reduce the potential safety hazard of electricity consumption.
Brief description of the drawings
, below will be to embodiment or existing in order to illustrate more clearly of inventive embodiments or technical scheme of the prior art The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are only to invent Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis These accompanying drawings obtain other accompanying drawings.
Fig. 1 is the structural representation of the safety power supply base device of the present invention.
Fig. 2 is the structural representation of plug socket in Fig. 1.
Fig. 3 is that upper power supply shell fragment and lower power supply shell fragment are respectively protruding into structural representation when in slotting chamber and underthrust chamber in Fig. 1 Figure.
Fig. 4 is structural representation when connection-peg is powered in Fig. 1.
Fig. 5 is the left view of connection-peg body in Fig. 1.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine in any way.
This specification(Including any accessory claim, summary and accompanying drawing)Disclosed in any feature, except non-specifically chatting State, can alternative features equivalent by other or with similar purpose replaced.I.e., unless specifically stated otherwise, each feature It is an example in a series of equivalent or similar characteristics.
With reference to Fig. 1-5, the present invention is described in detail.
Reference picture 1-5, a kind of safety power supply base device according to an embodiment of the invention, including be fixedly mounted in wall Plug socket 10 and the connection-peg body 20 that is connected with household electrical appliance, the opening symmetrical above and below that is provided with is towards the right side in the plug socket 10 Upper slotting chamber 11 and underthrust chamber 110, the sliding groove 12 of connection, the cunning are provided between the upper slotting chamber 11 and underthrust chamber 110 Move and sliding cavity 13 of the opening towards the sliding groove 12 is provided with the left end wall of groove 12, the company of being provided with the roof of sliding cavity 13 Lead to the upper groove 17 of the upper slotting chamber, the lower groove 170 for connecting the underthrust chamber 110 be provided with the bottom wall of sliding cavity 13, Upper sliding shoe 121 and downslide motion block 122 symmetrical above and below are slidably fitted with the sliding groove 12, is slided in the sliding cavity 13 The upper travelling arm 131 stretched into the upper groove 17 and the downslide swing arm 132 stretched into the lower groove 170, institute are installed State and lower linking arm 134, the downslide swing arm are installed between the lower end of travelling arm 131 and the upper end of downslide motion block 122 Linking arm 133 is installed between 132 upper ends and the lower end of upper sliding shoe 121, is provided with the lower linking arm 134 Through hole, the through hole is to allow the downslide swing arm 132 to pass through, the upper upper end of travelling arm 131 and the downslide swing arm 132 Lower end is installed with power supply shell fragment 135 and lower power supply shell fragment 136 respectively, also symmetrical above and below in the plug socket 10 to be provided with Opening is respectively facing upper telescopic chute 14 and the lower telescopic chute 140 of the upper slotting chamber 11 and underthrust chamber 110, the upper He of telescopic chute 14 Lower telescopic chute 140 is slidably fitted with telescopic arm 141 and lower telescopic arm 142, and the upper telescopic chute 14 and lower telescopic chute respectively Contact-making switch 145 and lower contact-making switch 146, the upper contact-making switch 145 and lower contact-making switch are also separately installed with 140 146 respectively to control it is described it is upper power supply shell fragment 135 and it is lower power supply shell fragment 136 power on/off;The left side of connection-peg body 20 Symmetrical above and below to be provided with arms 21 and lower arms 22, the upper arms 21 and the lower left side of arms 22 are provided with effect inclined-plane 23。
Valuably or exemplarily, wherein, the upper upper end of sliding shoe 121 and the lower end of downslide motion block 122 be provided with The first top pressure inclined-plane 120 that is engaged of effect inclined-plane 23, it is symmetrical above and below in the right-hand member wall of sliding groove 12 to be provided with first Guide groove 15, first be connected with the upper sliding shoe 121 and downslide motion block 122 is slidably fitted with first guide groove 15 Protrusion 151 is oriented to, first guide groove 15 is also installed with the first top pressure bullet for being oriented to protrusion 151 with described first and offseting Spring 152, first top pressure spring 152 is to by the first top pressure inclined-plane 120 and downslide swing arm 122 of the upper travelling arm 121 Top pressure is stretched into the upper slotting chamber 11 and underthrust chamber 110 respectively on the first top pressure inclined-plane 120.
Valuably or exemplarily, wherein, the upper upper end of telescopic arm 141 and the lower lower end of telescopic arm 142 be provided with The second top pressure inclined-plane 143 that is engaged of effect inclined-plane 23, it is all provided with the upper telescopic chute 14 and the lower two side of telescopic chute 140 The second guide groove 16 is equipped with, is slidably fitted with second guide groove 16 and the upper upper end of telescopic arm 141 and lower telescopic arm 142 the second guiding being fixedly connected protrude 161, are also installed with second guide groove 16 and described second is oriented to protrusion 161 the second top pressure springs 162 to offset, second top pressure spring 162 is to by the second of the upper upper end of telescopic arm 141 the top Pressing the second top pressure inclined-plane 143 of inclined-plane 143 and lower telescopic arm 142, top pressure is stretched into the upper slotting chamber 11 and underthrust chamber 110 respectively.
Valuably or exemplarily, wherein, the thickness of the upper arms 21 and lower arms 22 respectively with the upper slotting chamber 11 It is equal with the width of underthrust chamber 110, so as to which the upper arms 21 and lower arms 22 are inserted respectively into slotting chamber 11 and underthrust chamber 110 When the upper sliding shoe 121 and downslide motion block 122 can be pushed into the sliding groove 12 completely respectively so that on described Power supply shell fragment 135 and lower power supply shell fragment 136 are respectively protruding into the upper slotting chamber 11 and underthrust chamber 110, and the He of upper arms 21 The upper telescopic arm 141 and lower telescopic arm 142 also can be pushed into the upper telescopic chute 14 respectively with by lower arms 22 respectively In telescopic chute 146, so as to when the upper telescopic arm 141 and the lower telescopic arm 141 medial extremity respectively with it is described on contact out Pass 145 and lower contact-making switch 146 contact.
Plug socket 10 in apparatus of the present invention is in original state, the He of the first top pressure inclined-plane 120 of the upper travelling arm 121 First top pressure inclined-plane 120 of downslide swing arm 122 is stretched on described by top pressure respectively in the presence of first top pressure spring 152 Insert in chamber 11 and underthrust chamber 110, and the upper power supply shell fragment 135 and lower power supply shell fragment 136 are contracted in the upper groove 17 respectively In lower groove 170, the second top pressure inclined-plane 143 of the upper upper end of telescopic arm 141 and the second top pressure inclined-plane of lower telescopic arm 142 143 are stretched into by top pressure described in slotting chamber 11 and underthrust chamber 110 respectively in the presence of second top pressure spring 162, and institute State the medial extremity of telescopic arm 141 and the lower telescopic arm 141 respectively with the upper contact-making switch 145 and lower contact-making switch 146 Disconnect contact.
When needing to power to household electrical appliance, the upper arms 21 and lower arms 22 are inserted respectively into the upper slotting He of chamber 11 In underthrust chamber 110, when the effect inclined-plane 23 contacts with the first top pressure inclined-plane 120, continuation promotes the grafting to the left Head body 20, the upper sliding shoe 121 and downslide motion block 122 can be pushed into the cunning by the upper arms 21 and lower arms 22 respectively In dynamic groove 12, and the upper sliding shoe 121 and downslide motion block 122 can drive the downslide swing arm 132 and upper travelling arm 131 respectively The outer Slideslip of phase, when upper sliding shoe 121 and downslide motion block 122 are contracted in the sliding groove 12 completely respectively, the upper confession Electric shell fragment 135 and lower power supply shell fragment 136 are respectively protruding into the upper slotting chamber 11 and underthrust chamber 110, and the connection-peg body 20 continues To the left promote after, it is described it is upper power supply shell fragment 135 and it is lower power supply shell fragment 136 can respectively with the upper arms 21 and the lower split-phase of arms 22 Support, and can also make respectively when the upper arms 21 and lower arms 22 are slided to the left the upper telescopic arm 141 and lower telescopic arm 142 to Contract, when the upper telescopic arm 141 and lower telescopic arm 142 are fully retracted to the upper telescopic chute 14 and lower telescopic chute respectively When in 140, the upper telescopic arm 141 and lower telescopic arm 142 can respectively with the upper contact-making switch 145 and lower contact-making switch 146 Contact, so as to which the upper contact-making switch 145 and lower contact-making switch 146 can make the upper power supply shell fragment 135 and lower power supply bullet respectively Piece 136 is powered, and the connection-peg body 20 thus can be made to be powered and realize the energization to electric equipment;
After use, the connection-peg body 20 is outwards extracted, and the plug socket 10 can automatically restore to original state.
The beneficial effect of apparatus of the present invention is:Because the plug socket in apparatus of the present invention is in original state, the upper cunning First top pressure inclined-plane of swing arm and the first top pressure inclined-plane of downslide swing arm are pushed up respectively in the presence of first top pressure spring Pressure stretch enters in the upper slotting chamber and underthrust chamber, and it is described it is upper power supply shell fragment and it is lower power supply shell fragment be contracted in respectively the upper groove and In lower groove, therefore, when children are inserted into upper slotting chamber using metal rod, the metal rod can not be with the upper power supply bullet Piece contacts, and when metal rod is inserted into underthrust chamber, metal rod can not contact with the lower power supply shell fragment, therefore, no Electric shock accidents can occur;
And during original state, the second top pressure inclined-plane of the upper telescopic arm upper end and the second top pressure inclined-plane of lower telescopic arm are described Stretched into respectively by top pressure in the upper slotting chamber and underthrust chamber in the presence of second top pressure spring, and the upper telescopic arm and it is described under The medial extremity of telescopic arm disconnects with the upper contact-making switch and lower contact-making switch respectively to be contacted, therefore, if can not make on described Telescopic arm and lower telescopic arm are retracted in telescopic chute and lower telescopic chute respectively would not make the upper power supply shell fragment and lower power supply Shell fragment is powered, and therefore, considerably increases electrical safety;
When needing to power to household electrical appliance, the upper arms and lower arms are inserted respectively into the upper slotting chamber and underthrust chamber, When the connection-peg body left side is bonded with the plug socket right side, the upper sliding shoe and downslide motion block are received completely respectively In the sliding groove, the upper power supply shell fragment and lower power supply shell fragment are respectively protruding into the upper slotting chamber and underthrust chamber and distinguished for contracting Supported with the upper arms and lower arms split-phase, due to the upper telescopic arm and lower telescopic arm also to contract and respectively with it is described on Contact-making switch and the contact of lower contact-making switch, so as to which the upper contact-making switch and lower contact-making switch can make the upper power supply shell fragment respectively It is powered with lower power supply shell fragment, the connection-peg thus can be made to be powered and realize the energization to electric equipment;
Apparatus of the present invention are simple in construction, easy to use, can substantially reduce the potential safety hazard of electricity consumption.
Those skilled in the art can be clear and definite, can in the case of the overall spirit of the present invention and design is not departed from To make the various modifications for above example.It is each fallen within protection scope of the present invention.The protection scheme of the present invention It is defined by claims appended hereto.

Claims (4)

1. a kind of safety power supply base device, including the plug socket being fixedly mounted in wall and the grafting being connected with household electrical appliance Head body, it is characterised in that:The opening symmetrical above and below that is provided with is towards the upper slotting chamber and underthrust chamber on the right side, the upper slotting chamber in the plug socket The sliding groove of connection is provided between underthrust chamber, cunning of the opening towards the sliding groove is provided with the sliding groove left end wall Chamber is moved, the upper groove for connecting the upper slotting chamber is provided with the sliding cavity roof, connection is provided with the sliding cavity bottom wall The lower groove of the underthrust chamber, upper sliding shoe and downslide motion block symmetrical above and below, the cunning are slidably fitted with the sliding groove The upper travelling arm stretched into the upper groove and the downslide swing arm stretched into the lower groove are slidably fitted with dynamic chamber, it is described Be installed with lower linking arm between upper travelling arm lower end and the downslide motion block upper end, the downslide swing arm upper end with it is described on Linking arm is installed between sliding shoe lower end, is provided with through hole in the lower linking arm, the upper travelling arm upper end and The downslide swing arm lower end is installed with power supply shell fragment and lower power supply shell fragment respectively, also symmetrical above and below in the plug socket to set It is equipped with upper telescopic chute and lower telescopic chute, the upper telescopic chute and lower telescopic chute that opening is respectively facing the upper slotting chamber and underthrust chamber Telescopic arm and lower telescopic arm are slidably fitted with respectively, and are also separately installed with contact in the upper telescopic chute and lower telescopic chute Switch and lower contact-making switch;The connection-peg body left side is symmetrical above and below to be provided with arms and lower arms, the upper arms and Lower arms left side is provided with effect inclined-plane.
A kind of 2. safety power supply base device according to claim 1, it is characterised in that:The upper sliding shoe upper end and downslide Motion block lower end be provided with the first top pressure inclined-plane that is engaged of effect inclined-plane, it is symmetrical above and below in the sliding groove right-hand member wall The first guide groove is provided with, first be connected with the upper sliding shoe and downslide motion block is slidably fitted with first guide groove Protrusion is oriented to, first guide groove is also installed with the first top pressure spring for being oriented to protrusion with described first and offseting.
A kind of 3. safety power supply base device according to claim 1, it is characterised in that:Stretched with the upper telescopic arm upper end Contracting arm lower end is provided with the second top pressure inclined-plane being engaged with the effect inclined-plane, the upper telescopic chute and lower telescopic chute both sides The second guide groove is provided with wall, is slidably fitted with second guide groove and the upper telescopic arm upper end and lower telescopic arm Second be fixedly connected is oriented to protrusion, be also installed with second guide groove with described second be oriented to that protrusion offsets the Two top pressure springs.
A kind of 4. safety power supply base device according to claim 1, it is characterised in that:The thickness of the upper arms and lower arms Degree is equal with the width of the upper slotting chamber and underthrust chamber respectively.
CN201710650518.3A 2017-08-02 2017-08-02 A kind of safety power supply base device CN107425338A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710650518.3A CN107425338A (en) 2017-08-02 2017-08-02 A kind of safety power supply base device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710650518.3A CN107425338A (en) 2017-08-02 2017-08-02 A kind of safety power supply base device

Publications (1)

Publication Number Publication Date
CN107425338A true CN107425338A (en) 2017-12-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710650518.3A CN107425338A (en) 2017-08-02 2017-08-02 A kind of safety power supply base device

Country Status (1)

Country Link
CN (1) CN107425338A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105811139A (en) * 2014-09-23 2016-07-27 吴昊 Electric shock prevention socket easy and convenient to be plugged in and plugged out
CN106848773A (en) * 2017-01-24 2017-06-13 张伟萍 A kind of plug assembly of safe power supply
CN106848698A (en) * 2017-02-27 2017-06-13 广州雅隆自动化设备有限公司 A kind of electric power safety socket device
CN106887744A (en) * 2017-03-13 2017-06-23 戎传龙 A kind of electric power safety engagement device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105811139A (en) * 2014-09-23 2016-07-27 吴昊 Electric shock prevention socket easy and convenient to be plugged in and plugged out
CN106848773A (en) * 2017-01-24 2017-06-13 张伟萍 A kind of plug assembly of safe power supply
CN106848698A (en) * 2017-02-27 2017-06-13 广州雅隆自动化设备有限公司 A kind of electric power safety socket device
CN106887744A (en) * 2017-03-13 2017-06-23 戎传龙 A kind of electric power safety engagement device

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