CN106611920A - A power supply plug - Google Patents
A power supply plug Download PDFInfo
- Publication number
- CN106611920A CN106611920A CN201510694904.3A CN201510694904A CN106611920A CN 106611920 A CN106611920 A CN 106611920A CN 201510694904 A CN201510694904 A CN 201510694904A CN 106611920 A CN106611920 A CN 106611920A
- Authority
- CN
- China
- Prior art keywords
- display lamp
- housing
- attaching plug
- lamp
- binding post
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The present invention provides a power supply plug comprising a housing, wiring terminals projecting on one side of the housing and indicator lamps provided on the outer surface of the housing, wherein the indicator lamps and the wiring terminals are located on different sides of the housing. The indicator lamps comprise a first indicator lamp and a second indicator lamp; the wiring terminals at least comprise a livewire terminal and a ground terminal; the first indicator lamp is connected with the live wire terminal for indicating whether the power supply plug is energized; and the second indicator lamp is connected with the ground terminal to indicate whether the power supply plug is effectively grounded. According to the power supply plug provided by the invention, through arrangement of the indicator lamps respectively connected to the live wire and the ground wire, whether the plug is already correctly energized and effectively grounded is indicated. On one hand, electricity using safety of users can be guaranteed, and on the other hand, whether a user electric appliance is effectively connected to a power supply can be indicated.
Description
Technical field
The present invention relates to the technical field of supply socket and pin connector, more particularly to a kind of power supply
Plug.
Background technology
With the popularization of electronic product, socket and plug is made to become routine use very frequently device
Part, but people are during using plug, whether tend not to enough to know the jack of its insertion
Effective grounding and whether be path (normally accessing live wire), if the information pair of effective grounding
It is extremely important safely in user power utilization, and after user knows the socket of plug insertion, if just
Really connection is powered, and electrical appliance is judged to which, and correctly whether access power supply is important, and the problems referred to above are existing
Plug in be not resolved.
The content of the invention
The present invention provides a kind of attaching plug, can solve the problem that plug of the prior art cannot have been pointed out
The effect ground connection and plug whether technical problem of normal power-up.
To solve the above problems, the present invention provides a kind of attaching plug, and the attaching plug includes shell
Body, the binding post for being based in the housing side and the instruction located at the housing outer surface
Lamp, wherein, the display lamp is located at the not ipsilateral of the housing with the binding post, described
Display lamp includes the first display lamp and the second display lamp, and the binding post at least includes fire line terminal
And ground terminal, first display lamp is connected with the fire line terminal, for indicating attaching plug
Whether "on" position is in, second display lamp is connected with the ground terminal, for indicating electricity
Whether source plug is in ground state.
According to one preferred embodiment of the present invention, the binding post also includes zero terminal.
According to one preferred embodiment of the present invention, the face of first display lamp and second display lamp
Color is different.
According to one preferred embodiment of the present invention, first display lamp is green, and described second indicates
Lamp is redness.
According to one preferred embodiment of the present invention, the attaching plug also includes wire connecting ends, described
One end of wire connecting ends is connected with the housing, and the other end is connected with wire；The wire connection
The not ipsilateral that the housing is located at the binding post is held, the wire connecting ends connection is described
Sectional area of the sectional area of shell one end more than connecting wire one end.
According to one preferred embodiment of the present invention, the wire connecting ends are provided with many along axis direction
Individual interval trough.
According to one preferred embodiment of the present invention, first display lamp and second display lamp are located at
The same side of the housing or not ipsilateral.
According to one preferred embodiment of the present invention, the display lamp is LED.
Relative to prior art, the attaching plug that the present invention is provided, by arrange respectively with live wire and
The display lamp of earth lead connection, comes whether indicating plug has correctly been powered and whether has effectively connect
Ground, on the one hand can ensure that the Electrical Safety of user, on the other hand whether can point out consumer electronics
Power supply has effectively been accessed.
Description of the drawings
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, embodiment will be retouched below
Needed for stating, accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description
Only some embodiments of the present invention, for those of ordinary skill in the art, are not paying
On the premise of creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the structural representation of one preferred embodiment of attaching plug of the present invention；
Fig. 2 is the structural representation of one preferred embodiment of supply socket of the present invention；
Fig. 3 is the schematic diagram of one preferred embodiment of socket circuit structure of the present invention；
Fig. 4 is the structural representation of one preferred embodiment of power patch panel of the present invention；
Fig. 5 is the structural representation of one preferred embodiment of conversion socket of the present invention；
Fig. 6 is the schematic diagram at another visual angle of conversion socket in Fig. 5 embodiments；
Fig. 7 is the structural representation of another embodiment of conversion socket of the present invention；And
Fig. 8 is the structural representation of another embodiment of attaching plug of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical scheme in the embodiment of the present invention
It is clearly and completely described, it is clear that described embodiment is only a part of reality of the present invention
Apply example, rather than the embodiment of whole.Based on the embodiment in the present invention, ordinary skill
The every other embodiment obtained under the premise of creative work is not made by personnel, belongs to this
The scope of invention protection.
Fig. 1 is referred to, Fig. 1 is the structural representation of one preferred embodiment of attaching plug of the present invention,
The attaching plug is used at the 220V electric power connectings of China's standard.The attaching plug includes but does not limit
In elements below：Housing 100, binding post 200 and display lamp 300.
Specifically, binding post 200 is based in the side of housing 100, the binding post 200
At least include fire line terminal 210 and ground terminal 220, i.e., each plug can be two-phase type or
Person's three-phase type.Display lamp 300 located at housing 100 outer surface, wherein, display lamp 300 with connect
Line terminals 200 are located at the not ipsilateral of housing 100.Preferably, display lamp 300 and binding post
200 are located in the two opposite side surfaces of housing 100 respectively.
Further, display lamp 300 includes the first display lamp 310 and the second display lamp 320, the
Whether one display lamp 310 is connected with fire line terminal 210, for indicating attaching plug in energization shape
State, the second display lamp 320 are connected with ground terminal 220, for indicating whether attaching plug is in
Ground state.Wherein, ground connection mark 3201 is also correspondingly arranged in the second display lamp 320, and connect
Ground mark 3201 can be arranged on as in the present embodiment accompanying drawing on housing 100, can also be set
Put on the second display lamp 320, and be grounded the structure that the shape of mark is also not necessarily limited to three lines.
Can also be other forms, as long as ground connection can be represented.
Preferably, binding post 200 also includes zero terminal 230.First display lamp 310 and
The color of two display lamps 320 is different.For example, the first display lamp 310 can be green, and second
Display lamp 320 can be redness.Certainly, in other embodiments, the color of display lamp 300 is simultaneously
Exemplified above red and green is not limited to, designer can be set to other according to demand
Color, will not enumerate herein.And the first display lamp 310 with the second display lamp 320 can be
The light-emitting components such as LED.
Wherein, the first display lamp 310 and the second display lamp 320 may be located at the same of housing 100
Side or not ipsilateral, only illustrate the first display lamp 310 and second in the present embodiment and indicate
Lamp 320 is located at the situation of 100 the same side of housing, and this is not construed as limiting the invention certainly.This
First display lamp 310 and the second display lamp 320 can be arranged on by art personnel according to demand
The diverse location of housing 100.
Further, the attaching plug also includes wire connecting ends 400, the wire connecting ends 400
One end be connected with housing 100, the other end is connected with wire 500；Wire connecting ends 400 with connect
Line terminals 200 are located at the not ipsilateral of housing 100.Preferably, the connection of wire connecting ends 400 shell
Sectional area of the sectional area of 100 one end of body more than 500 one end of connecting wire, and wire connecting ends 400
Multiple interval troughs 410 are provided with along axis direction, to facilitate the bending of wire connecting ends 400,
It is also prevented from wire connecting ends 400 to be broken off.
Attaching plug provided in an embodiment of the present invention, is connected with live wire and earth lead respectively by arranging
Display lamp, carry out indicating plug and whether be correctly powered and whether effective grounding, on the one hand may be used
To ensure the Electrical Safety of user, on the other hand can point out whether consumer electronics effectively access
Power supply.
Please continue to refer to Fig. 1, further, the attaching plug in the embodiment is also included located at shell
The draw ring 600 of 100 outer surface of body.Preferably, draw ring 600 is located at housing with binding post 200
100 relative two side, in order to being used for force direction when pulling the plug out of the socket and extracting direction
It is identical, and then save the strength of unplugg.In the present embodiment, draw ring 600 and display lamp 300
On the same side of housing 100, draw ring 600 is preferably integrated formed structure with housing 100,
And, the material of draw ring 600 is identical with housing 100, can be rigid plastics material.Draw ring is excellent
Elect circular configuration as, outside dimension of its internal diameter more than one finger of ordinary person.Certainly, in other realities
Apply in example, draw ring 600 can also be rectangle or with finger profile be adapted etc. shape, herein
Will not enumerate.
The attaching plug that the present invention is provided, by the couple positioned opposite draw ring in binding post, user
When plug is pulled away socket, the point of application is provided the user, facilitated user to pull the plug out of the socket.
Further, Fig. 8 is referred to, Fig. 8 is the structure of another embodiment of attaching plug of the present invention
Schematic diagram, in this embodiment, wire 500 can also be arranged on the side of draw ring 600, that is, lead
Line 500 is located at the same side of housing 100 with draw ring 600, and the embodiment is different from a upper embodiment
, the space of plug side can be saved.And with regard to display lamp 300 and binding post 200
Technical characteristic, refer to the description of above-described embodiment, no longer describe in detail herein.
Fig. 2 is referred to, Fig. 2 is the structural representation of one preferred embodiment of supply socket of the present invention.
The socket is used cooperatively with the plug in a upper embodiment.The socket includes housing 710, insertion hole groups
720 and display lamp 730.
Specifically, insertion hole groups 720 can be for one group or multigroup, and is embedded in housing 710
Portion.Each insertion hole groups at least include firewire jack 721 and earth jack 722, i.e., each insertion hole groups
Can be two-phase type or three-phase type.Outer surface of the display lamp 730 located at housing 710.Preferably,
Display lamp 730 is located at the same side of housing 710 with insertion hole groups 720.Certainly, implement at other
Different sides can also be located in example.
Display lamp 730 includes the first display lamp 731 and the second display lamp 732, the first display lamp 731
It is connected with firewire jack 721, for whether indicating supply socket in "on" position, second indicates
Whether lamp 732 is connected with earth jack 722, for indicating supply socket in ground state.Its
In, ground connection mark 7321 is also correspondingly arranged in the second display lamp 732, and be grounded mark 7321
Can be arranged on as in the present embodiment accompanying drawing on housing 710, the second instruction can also be arranged on
On lamp 732, and it is grounded the structure that the shape of mark is also not necessarily limited to three lines.Can also be other
Form, as long as ground connection can be represented.
Preferably, insertion hole groups 720 also include zero line jack 723.First display lamp 731 and second
The color of display lamp 732 is different.For example, the first display lamp 731 can be green, and second refers to
Show that lamp 732 can be redness.Certainly, in other embodiments, the color of display lamp 730 is not
It is limited to exemplified above red and green, designer can be set to other face according to demand
Color, will not enumerate herein.And the first display lamp 731 and the second display lamp 732 can be LED
The light-emitting components such as lamp.
Wherein, the first display lamp 731 and the second display lamp 732 may be located at the same of housing 710
Side or not ipsilateral, only illustrate the first display lamp 731 and second in the present embodiment and indicate
Lamp 732 is located at the situation of 710 the same side of housing, and this is not construed as limiting the invention certainly.This
First display lamp 731 and the second display lamp 732 can be arranged on by art personnel according to demand
The diverse location of housing 710.
Further, the supply socket also includes the switch 740 on housing 710, the switch
740 are connected with firewire jack 721, for the connecting and disconnecting supply socket.Play safety and protect
The effect of shield.
Supply socket provided in an embodiment of the present invention, is connected with live wire and earth lead respectively by arranging
Display lamp, carry out socket for indicating and whether be correctly powered and whether effective grounding, on the one hand may be used
To ensure the Electrical Safety of user, on the other hand can point out whether consumer electronics effectively can access
Power supply.
Further, the embodiment of the present invention also provides a kind of socket circuit structure, refers to Fig. 3,
Fig. 3 is the schematic diagram of one preferred embodiment of socket circuit structure of the present invention, and the socket circuit includes fire
Line segment circuit 830,810 3 parts of nil segment circuit 820 and ground section circuit.
Specifically, the live wire section circuit 830, nil segment circuit 820 and ground section circuit 810
One end connect firewire jack 831, zero line jack 821 and earth jack 811 respectively, and be somebody's turn to do
The other end of live wire section circuit 830, nil segment circuit 820 and ground section circuit 810 is mutually interconnected
It is logical.It should be noted that firewire jack 831, zero line jack 821 in the present embodiment and connecing
Ground jack 811 can correspond to firewire jack 721 in a upper embodiment, zero line jack 723 respectively
And earth jack 722.
Wherein, ground section circuit 810 is provided with the first resistor 812 and light-emitting diodes being connected in series
Pipe 813；When socket normal ground, the light emitting diode 813 lights.Nil segment circuit 820
It is provided with the second resistance 822 and diode 823 being connected in series.And on live wire section circuit 830 then
It is provided with the 3rd resistor 832 and diode 833 being connected in series.Diode (823,833) is played
The effect of one-way conduction.
Preferably, the resistance value of first resistor 812 can be 10K ohms, second resistance 822
Resistance value can be 50-100K ohms, and the resistance value of 3rd resistor 832 can be 50-100K Europe
Nurse.Diode on nil segment circuit 820 and ground section circuit 830 is preferably 4004 type, two pole
Pipe, pressure 800V.Wherein, first resistor 812, second resistance 822 and 3rd resistor 832
Demarcation peak power be 0.25W.
Further, the socket circuit also includes indicating section circuit 840, the instruction section circuit 840
Two ends connect firewire jack 831 and zero line jack 821 respectively, the instruction section circuit 840 includes
The 4th resistance 842 being connected in series and light emitting diode 843, the light emitting diode 843 are used to refer to
Show that firewire jack 831 can be with normal power-up.Wherein, the 4th resistance 842 can be with 3rd resistor
832 or second resistance 822 there is identical parameter, the light emitting diode 843 can with it is luminous
Diode 813 have identical parameter, skilled artisans appreciate that within the scope of,
Here is omitted.
Socket circuit structure provided in an embodiment of the present invention, the socket circuit structure that the present invention is provided,
By arranging the display lamp (light emitting diode) being connected with live wire and earth lead, carrying out socket for indicating is
It is no to be correctly powered and whether can be with effective grounding, while Electrical Safety is ensured, can be with
Whether effectively prompting consumer electronics can access power supply.
Fig. 4 is referred to, Fig. 4 is the structural representation of one preferred embodiment of power patch panel of the present invention.
The patch panel is used cooperatively with the plug in a upper embodiment.The patch panel includes housing 910, inserts
Hole group 920 and display lamp 930.
Specifically, insertion hole groups 920 can be for one group or multigroup, and is embedded in housing 910
Portion.Each insertion hole groups at least include firewire jack 921 and earth jack 922, i.e., each insertion hole groups
Can be two-phase type or three-phase type.Outer surface of the display lamp 930 located at housing 910.Preferably,
Display lamp 930 is located at the same side of housing 910 with insertion hole groups 920.Certainly, implement at other
Different sides can also be located in example.
Display lamp 930 includes the first display lamp 931 and the second display lamp 932, the first display lamp 931
It is connected with firewire jack 921, for whether indicating power patch panel in "on" position, second refers to
Show that lamp 932 is connected with earth jack 922, for indicating power patch panel whether in ground state.
Wherein, ground connection mark 9321 is also correspondingly arranged in the second display lamp 932, and be grounded mark 9321
Can be arranged on as in the present embodiment accompanying drawing on housing 910, the second instruction can also be arranged on
On lamp 932, and it is grounded the structure that the shape of mark is also not necessarily limited to three lines.Can also be other
Form, as long as ground connection can be represented.
Preferably, insertion hole groups 920 also include zero line jack 923.First display lamp 931 and second
The color of display lamp 932 is different.For example, the first display lamp 931 can be green, and second refers to
Show that lamp 932 can be redness.Certainly, in other embodiments, the color of display lamp 930 is not
It is limited to exemplified above red and green, designer can be set to other face according to demand
Color, will not enumerate herein.And the first display lamp 931 and the second display lamp 932 can be LED
The light-emitting components such as lamp.
Wherein, the first display lamp 931 and the second display lamp 932 may be located at the same of housing 910
Side or not ipsilateral, only illustrate the first display lamp 931 and second in the present embodiment and indicate
Lamp 932 is located at the situation of 910 the same side of housing, and this is not construed as limiting the invention certainly.This
First display lamp 931 and the second display lamp 932 can be arranged on by art personnel according to demand
The diverse location of housing 910.
Further, the power patch panel also includes the switch 940 on housing 910, and this is opened
Close 940 to be connected with firewire jack 921, for the connecting and disconnecting power patch panel.Play safety
With the effect of protection.
Power patch panel provided in an embodiment of the present invention, is connected with live wire and earth lead respectively by arranging
The display lamp for connecing, indicates that whether patch panel has correctly been powered and whether effective grounding, a side
Whether face can ensure that the Electrical Safety of user, on the other hand can point out the consumer electronics can be effective
Access power supply.
The present invention also provides a kind of conversion socket, and it is this to see also Fig. 5 and Fig. 6, Fig. 5
The structural representation of one preferred embodiment of bright conversion socket, Fig. 6 are conversion sockets in Fig. 5 embodiments
The schematic diagram at another visual angle.
The conversion socket includes housing 1, insertion hole groups 2, display lamp 3 and binding post 4.
Specifically, insertion hole groups 2 can be for one group or multigroup, and is embedded in the inside of housing 1.
Each insertion hole groups at least include firewire jack (not indicating in figure) and zero line jack (not indicating in figure),
Earth jack can also be included, i.e., each insertion hole groups can be two-phase type or three-phase type.Display lamp
3 outer surfaces for being located at housing 1.Preferably, display lamp 3 is located at the same of housing 1 with insertion hole groups 2
One side.Certainly, different sides can also be located in other embodiments.
Binding post 4 is based in the side of housing 1, and the binding post 4 at least includes fire line terminal
41 and ground terminal 42, i.e., each binding post can be two-phase type or three-phase type.Indicate
Outer surface of the lamp 3 located at housing 1, wherein, display lamp 3 is located at housing 1 with binding post 4
Not ipsilateral.Preferably, display lamp 3 and binding post 4 are respectively positioned at relative two of housing 1
In side.
Display lamp 3 includes the first display lamp 31 and the second display lamp 32, the first display lamp 31 and fire
Whether line terminals 41 connect, for indicating conversion socket in "on" position, the second display lamp 32
It is connected with ground terminal 42, for indicating conversion socket whether in ground state.Wherein, exist
Second display lamp 32 is also correspondingly arranged on ground connection mark 3291, and ground connection mark 3291 can be as this
Equally it is arranged in embodiment accompanying drawing on housing 1, can also be arranged on the second display lamp 32,
And it is grounded the structure that the shape of mark is also not necessarily limited to three lines.Can also be other forms, as long as
Ground connection can be represented.
Preferably, in the present embodiment, binding post 4 also includes zero terminal 43, and the embodiment
In conversion socket binding post be trinomial.The face of the first display lamp 31 and the second display lamp 32
Color is different.For example, the first display lamp 31 can be green, and the second display lamp 32 can be red
Color.Certainly, in other embodiments, the color of display lamp 3 is not limited to exemplified above
Red and green, designer can be set to other colors according to demand, herein a no longer string
Lift.And the first display lamp 31 and the second display lamp 32 can be the light-emitting components such as LED.
Wherein, the first display lamp 31 and the second display lamp 32 may be located at the same side of housing 1
Or not ipsilateral, the first display lamp 31 and the second display lamp 32 are only illustrated in the present embodiment
Positioned at the situation of 1 the same side of housing, this is not construed as limiting the invention certainly.Art technology
First display lamp 31 and the second display lamp 32 can be arranged on housing 1 not by personnel according to demand
Same position.Further, the conversion socket also includes the switch 5 on housing 1, the switch
5 are connected with firewire jack, for the connecting and disconnecting conversion socket.Play the work of safety and protection
With.
Preferably, groove 11, the size of the groove are additionally provided with the two opposite side surfaces of the housing 1
Be adapted with the size of finger, its end face is semicircular arc, using when conversion socket is extracted as
Forced position, and then convenient plug conversion socket.
Which refers to Fig. 7, and Fig. 7 is the structural representation of another embodiment of conversion socket of the present invention, with
Unlike Fig. 5 (Fig. 6) embodiment, the conversion socket includes an insertion hole groups 2, and display lamp
3 position is not at same plane with insertion hole groups 2, respectively at the two of step surface.Certainly,
This does not constitute restriction for scope of protection of the present invention, simply lists such a knot herein
Structure, the objective of present invention protection is with display lamp 3 (especially grounded signal lamp).And the enforcement
Conversion socket other parts feature in example is identical with Fig. 5 (Fig. 6) embodiment, no longer goes to live in the household of one's in-laws on getting married herein
State.
Conversion socket provided in an embodiment of the present invention, is connected with live wire and earth lead respectively by arranging
Display lamp, indicate that whether conversion socket has correctly been powered and whether effective grounding, a side
Whether face can ensure that the Electrical Safety of user, on the other hand can point out the consumer electronics can be effective
Access power supply.In addition also by groove being arranged in housing side, and then facilitate the plug of conversion socket.
The section Example of the present invention is the foregoing is only, the protection model of the present invention is not thereby limited
Enclose, the equivalent device or equivalent process made by every utilization description of the invention and accompanying drawing content becomes
Change, or be directly or indirectly used in other related technical fields, be included in the present invention's in the same manner
In scope of patent protection.
Claims (8)
1. a kind of attaching plug, it is characterised in that the attaching plug includes housing, is based in
The binding post and the display lamp located at the housing outer surface of the housing side, wherein, institute
State the not ipsilateral that display lamp and the binding post are located at the housing, the display lamp includes the
One display lamp and the second display lamp, the binding post at least include fire line terminal and ground terminal,
Whether first display lamp is connected with the fire line terminal, for indicating attaching plug in energization
State, second display lamp are connected with the ground terminal, for indicating whether attaching plug is located
In ground state.
2. attaching plug according to claim 1, it is characterised in that the binding post
Also include zero terminal.
3. attaching plug according to claim 1, it is characterised in that described first indicates
Lamp is different from the color of second display lamp.
4. attaching plug according to claim 3, it is characterised in that described first indicates
Lamp is green, and second display lamp is redness.
5. attaching plug according to claim 3, it is characterised in that the attaching plug
Also include wire connecting ends, one end of the wire connecting ends be connected with the housing, the other end and
Wire connects；The wire connecting ends are located at the not ipsilateral of the housing with the binding post,
The wire connecting ends connect the section of the sectional area more than connecting wire one end of the shell one end
Product.
6. attaching plug according to claim 5, it is characterised in that the wire connection
End is provided with multiple interval troughs along axis direction.
7. attaching plug according to claim 4, it is characterised in that described first indicates
Lamp and second display lamp are located at the same side of the housing or not ipsilateral.
8. attaching plug according to claim 4, it is characterised in that the display lamp is
LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510694904.3A CN106611920A (en) | 2015-10-22 | 2015-10-22 | A power supply plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510694904.3A CN106611920A (en) | 2015-10-22 | 2015-10-22 | A power supply plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106611920A true CN106611920A (en) | 2017-05-03 |
Family
ID=58612433
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510694904.3A Pending CN106611920A (en) | 2015-10-22 | 2015-10-22 | A power supply plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106611920A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890030A (en) * | 1973-09-27 | 1975-06-17 | Johnny B Mcdaniel | Lack of ground indicator |
| CN201369472Y (en) * | 2009-02-12 | 2009-12-23 | 东莞岳丰电子科技有限公司 | Grounding conduction state detection device for plug or socket |
| CN101630798A (en) * | 2009-08-20 | 2010-01-20 | 上海化工研究院 | Movable patch board for displaying line status |
| CN201838835U (en) * | 2010-09-09 | 2011-05-18 | 干阳 | Grounding wire indicating safety plug |
| CN202259985U (en) * | 2011-09-26 | 2012-05-30 | 余孟达 | Plug with power-off protection function |
| CN203326209U (en) * | 2013-05-15 | 2013-12-04 | 国家电网公司 | Electric shock preventing power plug |
-
2015
- 2015-10-22 CN CN201510694904.3A patent/CN106611920A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890030A (en) * | 1973-09-27 | 1975-06-17 | Johnny B Mcdaniel | Lack of ground indicator |
| CN201369472Y (en) * | 2009-02-12 | 2009-12-23 | 东莞岳丰电子科技有限公司 | Grounding conduction state detection device for plug or socket |
| CN101630798A (en) * | 2009-08-20 | 2010-01-20 | 上海化工研究院 | Movable patch board for displaying line status |
| CN201838835U (en) * | 2010-09-09 | 2011-05-18 | 干阳 | Grounding wire indicating safety plug |
| CN202259985U (en) * | 2011-09-26 | 2012-05-30 | 余孟达 | Plug with power-off protection function |
| CN203326209U (en) * | 2013-05-15 | 2013-12-04 | 国家电网公司 | Electric shock preventing power plug |
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Application publication date: 20170503 |