CN208142466U - Three pole on-off leakage protecting plugs - Google Patents
Three pole on-off leakage protecting plugs Download PDFInfo
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- CN208142466U CN208142466U CN201820478910.4U CN201820478910U CN208142466U CN 208142466 U CN208142466 U CN 208142466U CN 201820478910 U CN201820478910 U CN 201820478910U CN 208142466 U CN208142466 U CN 208142466U
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Abstract
The utility model relates to a kind of three pole on-off leakage protecting plugs, feature be include shell, wiring board, mounting base, relay assembly and relay rack；Movable contact spring component, live prong structure, earth pin structure and zero line pin structure；Relay rack includes installation position, and movable contact spring component includes magnetic conduction iron plate, insulating barrier, firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring；The one end of firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring is installed on insulating barrier, the length of firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring >=18mm, the other end of firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring is corresponding with corresponding firewire stationary contact, ground wire stationary contact and with zero curve stationary contact respectively and can touch and is electrically connected；The length of ground wire movable contact spring is greater than firewire movable contact spring and zero curve movable contact spring.
Description
Technical field
The utility model relates to a kind of three pole on-off leakage protecting plugs.
Background technique
Common three pole on-off leakage protecting plug（PRCD）, typically with mechanical release device cooperate monitoring circuit come
Three pole on/offs of control zero, fire and ground connection；In the case where resetting working condition, switch socket is such as used, encounters power failure, and meet
To ground tape（Leakage）It is electric or single-phase（Line）Power-off, although the monitoring circuit that the leakage is protected loses working power, it will not thread off
Tripping, i.e., can not all cut off power supply, there is the security risks of human electric shock immediately；It is existing to can be realized above-mentioned function
Leakage protecting plug because too complicated etc. many defects of circuit, can't produce use in batches.
Summary of the invention
It is simple that a kind of more safe and monitoring circuit is provided the purpose of the utility model is to overcome the deficiencies in the prior art
Three pole on-off leakage protecting plugs, in the case where resetting working condition, such as use switch socket, meet have a power failure, and encounter ground tape
（Leakage）It is electric or single-phase（Line）The tripping that will thread off immediately is protected in power-off, the leakage, power supply is all cut off, after circuit restores electricity, only
Without leak current fault, original reset working condition will be automatically restored to, when ground wire is first closed, disconnects when closure after ground wire
The requirement of disconnection meets national standard GB20044-2012 requirement；Circuit is simple, varies without the structure of former monitoring circuit, can batch
Production, structure are simple, compact.
It in order to achieve the above object, the utility model is realized in this way, is a kind of three pole on-off leakage protecting plugs,
Including：
Shell and wiring board；The wiring board installation is inside the shell；
Mounting base, relay assembly and relay rack；The mounting base installation is on circuit boards；The relay rack includes
Installation position is respectively equipped with live prong grafting position, earth pin grafting position and zero line pin grafting position on the installation position,
The two sides of installation position are equipped with location structure and mounting structure, and the mounting structure is mounted in mounting base to consolidate installation position
It is scheduled in mounting base, the relay assembly is mounted on installation position and is positioned by location structure；
Movable contact spring component；The movable contact spring component includes magnetic conduction iron plate, insulating barrier, firewire movable contact spring, ground wire movable contact spring
And zero curve movable contact spring；The magnetic conduction iron plate is mounted on the magnetic conduction iron frame of relay assembly and can swing up and down, it is described insulation every
Plate is mounted on magnetic conduction iron plate, and the spring of the relay assembly resets movable contact spring component；The firewire movable contact spring, ground wire are dynamic
The one end of contact and zero curve movable contact spring be installed on insulating barrier and respectively with exchange firewire L, ground wire E and zero curve N and be electrically connected
Connect, the length of firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring >=18mm, the length of ground wire movable contact spring is dynamic greater than firewire
The length of contact and zero curve movable contact spring；
Respectively with the live prong structure of circuit board electrical connection, earth pin structure and zero line pin structure；The firewire
Pin configuration includes live prong and live prong extension；The live prong extension is plugged in live prong grafting position
On, it is equipped with firewire stationary contact in the upper end of live prong extension, the lower end of live prong extension is electrically connected with live prong,
Live prong stretches out outside shell；The earth pin structure includes earth pin and earth pin extension, the earth pin
Extension is plugged on earth pin grafting position, and the upper end of earth pin extension is equipped with ground wire stationary contact, and earth pin extends
The lower end in portion is electrically connected with earth pin, and earth pin is stretched out outside shell；The zero line pin structure includes zero line pin and zero
Line pin extension, the zero line pin extension are plugged on zero line pin grafting position, and the upper end of zero line pin extension is set
There is zero curve stationary contact, the lower end of zero line pin extension is electrically connected with zero line pin, and zero line pin stretches out outside shell；The firewire
The other end of movable contact spring is corresponding with firewire stationary contact and can touch electrical connection, and the other end and ground wire of the ground wire movable contact spring are quiet
Contact is corresponding and can touch electrical connection, and the other end of the zero curve movable contact spring is corresponding with zero curve stationary contact and can touch and is electrically connected
It connects；When disconnection, the other end of firewire movable contact spring and firewire stationary contact are opened away from, the other end of ground wire movable contact spring and ground wire stationary contact
Open away from and the other end of zero curve movable contact spring and opening away from >=3mm for zero curve stationary contact, the length of ground wire movable contact spring is greater than firewire
Movable contact spring and zero curve movable contact spring.
In the technical scheme, the movable contact spring component further includes cleat insulator；The cleat insulator be mounted on insulation every
Plate, cleat insulator clamp one end of firewire movable contact spring, ground wire movable contact spring and zero curve movable contact spring, in the firewire movable contact spring, ground connection
The other end of movable contact spring and zero curve movable contact spring is respectively equipped with firewire movable contact, ground connection movable contact and zero curve movable contact, the firewire
Movable contact, ground connection movable contact and zero curve movable contact are corresponding with firewire stationary contact, ground connection stationary contact and zero curve stationary contact respectively.
In the technical scheme, live prong grafting position is " L " type slot, and the horizontal part of " L " type slot is located at peace
The bottom of position is filled, longitudinal portion of " L " type slot is located on the side of installation position and between two location structures, and the firewire is inserted
Foot extension is L-shaped and is plugged in " L " type slot, in the horizontal part of " L " type slot of live prong grafting position
End is equipped with firewire and bends position, and the firewire bends position and the gradient of live prong is adapted；Earth pin grafting position
It is " L " type slot, the horizontal part of " L " the type slot is located at the bottom of relay assembly installation position, longitudinal portion of " L " type slot
It is located at the top of the side of relay assembly installation position and between two fixed structures, the earth pin extension is in " L "
Shape is simultaneously plugged in " L " type slot；Zero line pin grafting position is " L " type slot, and the horizontal part of " L " the type slot is located at
Relay assembly installation position bottom, longitudinal portion of " L " type slot are located at the top of the side of relay assembly installation position and are located at
Between two fixed structures, the zero line pin extension is L-shaped and is plugged in " L " type slot, inserts in the zero line pin
The end for connecing the horizontal part of " L " type slot of position is equipped with zero curve and bends position, the gradient of the zero curve bending position and zero line pin
It is adapted.
In the technical scheme, firewire lead welding opening is equipped on the live prong extension, in grounding pin
Extension is equipped with ground lead welding opening, and zero curve lead welding opening is equipped on zero line pin extension；The firewire
Lead welding opening, ground lead welding opening and zero curve lead welding opening pass through lead and circuit board electrical connection respectively.
It in the technical scheme, further include pin pad and waterproof pad；The pin pad and waterproof pad are located in shell,
Pin cushion cover is on live prong, grounding pin and zero line pin, and the upper surface of pin pad and relay rack are against marine glue
Cushion cover is mounted in live prong, grounding pin and zero line pin and bears against and leans with the lower end surface of pin pad and shell.
In the technical scheme, the mounting base further includes two isolation covers and tripping frame；Two isolation cover and tripping frame
Be respectively mounted on circuit boards, the firewire movable contact spring and zero curve movable contact spring are located in corresponding isolation cover to will
Firewire movable contact spring, ground connection movable contact spring and zero curve movable contact spring are spaced one from, and are equipped with the first clasp and connecting column in two isolation covers, and two
First clasp is buckled on relay rack, two in succession column be fixedly connected by screw with relay rack.
In the technical scheme, the location structure includes the second fastener and third fastener, second fastener and third
Fastener is located at the both ends of installation position side, and the second fastener and third fastener of the installation position two sides are buckled in relay group
Relay assembly is positioned on part；The mounting structure is L-type connecting column, and the two L-types connecting column is located at the two sides of installation position,
L-type connecting column is fixedly connected by screw with two connecting columns of isolation cover.
It in the technical scheme, further include the first drop-away reset elastic slice, the second drop-away reset elastic slice and releasing structure；Tripping
Structure be mounted on tripping frame in and and circuit board electrical connection, a left side for the first drop-away reset elastic slice and the second drop-away reset elastic slice
End is installed in the circuit board and is electrically connected, and the right end of the first drop-away reset elastic slice and the second drop-away reset elastic slice is resisted against tripping knot
On the pressure arm of structure, the right end of the first drop-away reset elastic slice can be touched with the contact on wiring board to be connected or disconnected with, and second is de-
It detains the right end of reseting shrapnel and can be touched with another contact on wiring board and is connected or disconnected with.
In the technical scheme, the releasing structure further includes reset key, iron core, little spring, tripping coil, tripping card
Piece and big spring；The reset key is plugged in tripping frame and can axially move up and down, and the upper end of reset key passes through line
It is outer so that press section is formed, equipped with postive stop baffle and locating groove, the tripping coil on reset key that road plate stretches out shell
It is mounted in tripping frame, is equipped with longitudinal opening sliding slot in the two sides of tripping frame；The iron core and little spring are each provided at tripping
In coil, iron core is horizontally moveable in tripping coil, and the left end of little spring is resisted against on tripping coil, and the right end of little spring supports
Lean against on iron core tail end, the tripping long narrow opening portion in card left end be fastened in the ring-like card slot in head of iron core and can on move down
Dynamic, the pressure arm is located in tripping frame, and pressure arm is set on reset key and opposite can move up and down, and is equipped at the middle part of pressure arm
The right part square aperture of socket, card of threading off is fastened in socket, and tripping card pushes iron core forward with the elastic force of little spring
When mobile, the right part square aperture for card of threading off, which can be caught in locating groove and socket, makes reset key and pressure arm lock be one
Body；The lower end of the big spring is resisted against the bottom of tripping frame, and the upper end of big spring is resisted against the tail portion of reset key, the pressure
Two arms of arm can move up and down in opening sliding slot；The first drop-away reset elastic slice and the second drop-away reset elastic slice support respectively
It leans against on two arms of pressure arm.
The utility model compared with prior art the advantages of be：In the case where resetting working condition, switch socket is such as used, is met
Have a power failure, and encounters ground tape（Leakage）It is electric or single-phase（Line）The tripping that will thread off immediately is protected in power-off, the leakage, and power supply is all cut off,
After circuit restores electricity, as long as no leak current fault, original reset working condition will be automatically restored to, firewire movable contact spring,
Ground connection movable contact spring and zero curve movable contact spring and corresponding stationary contact are opened away from >=3mm, when ground wire is first closed, disconnects when closure
The requirement disconnected after line meets national standard GB20044-2012 requirement；Circuit is simple, varies without the structure of former monitoring circuit, can
Batch production, structure are simple, compact.
Detailed description of the invention
Fig. 1 is the perspective view of the utility model；
Fig. 2 is the perspective view of the utility model removal shell；
Fig. 3 is the top view of Fig. 2
The position A-A cross-sectional view when Fig. 4 is relay power in Fig. 3；
Fig. 5 is the position A-A cross-sectional view when relay disconnects in Fig. 3；
Fig. 6 is the perspective view of the utility model removal shell and circuit board；
Fig. 7 is the perspective view that releasing structure and mounting base are removed in Fig. 6；
Fig. 8 is the perspective view of Fig. 7 left view position；
Fig. 9 is the face view perspective view of the utility model removal shell；
Figure 10 is the perspective view of the utility model relay rack；
Figure 11 is the perspective view that the utility model relay rack looks up position；
Figure 12 is the perspective view of the utility model isolation cover；
Figure 13 is the perspective view that the utility model isolation cover looks up position；
Figure 14 is the perspective view of the utility model live prong structure；
Figure 15 is the perspective view of the utility model zero line pin structure.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, as long as technical characteristic involved in the various embodiments of the present invention described below does not constitute punching each other
It is prominent to be combined with each other.
It is a kind of three pole on-off leakage protecting plugs, including shell 1, wiring board 2, mounting base as shown in Fig. 1 to Figure 15
3, relay assembly 4, relay rack 5, movable contact spring component 6, respectively with live prong structure, the earth pin of circuit board electrical connection
Structure and zero line pin structure；Wherein,
The wiring board 2 is mounted in shell 1；
The installation of mounting base 3 is on the circuit board 2；The relay rack 5 includes installation position 54, on the installation position 54
It is respectively equipped with live prong grafting position 51, earth pin grafting position 52 and zero line pin grafting position 53, in the two sides of installation position 54
It is equipped with location structure 55 and mounting structure 56, the mounting structure 56 is mounted in mounting base 3 to which installation position 54 is fixed
In mounting base 3, the relay assembly 4 is mounted on installation position 54 and is positioned by location structure 55；
The movable contact spring component 6 include magnetic conduction iron plate 61, insulating barrier 62, firewire movable contact spring 64, ground wire movable contact spring 65 and
Zero curve movable contact spring 66；The magnetic conduction iron plate 61 is mounted on the magnetic conduction iron frame 41 of relay assembly 4 and can swing up and down, described exhausted
Edge partition 62 is mounted on magnetic conduction iron plate 61, and the spring 42 of the relay assembly 4 resets movable contact spring component 6；The firewire
The one end of movable contact spring 64, ground wire movable contact spring 65 and zero curve movable contact spring 66 be installed on insulating barrier 62 and respectively with firewire L,
Ground wire E and zero curve N electrical connection, such firewire movable contact spring 64, ground wire movable contact spring 65 and zero curve movable contact spring 66 can be with magnetic conduction iron plates 61
Swing up and down, the length of firewire movable contact spring 64, ground wire movable contact spring 65 and zero curve movable contact spring 66 >=18mm, ground wire movable contact spring 65
Length is greater than the length of firewire movable contact spring 64 and zero curve movable contact spring 66；
The live prong structure includes live prong 71 and live prong extension 72；The live prong extension 72
It is plugged on live prong grafting position 51, by live prong structure positioning, to be equipped with fire in the upper end of live prong extension 72
The lower end of line stationary contact 73, live prong extension 72 is electrically connected with live prong 71, and live prong 71 stretches out outside shell 1；Institute
Stating earth pin structure includes earth pin 81 and earth pin extension 82, and the earth pin extension 82 is plugged in ground wire
On pin grafting position 52, so that the upper end of earth pin extension 82 is equipped with ground wire stationary contact 83 by earth pin structure positioning,
The lower end of earth pin extension 82 is electrically connected with earth pin 81, and earth pin 81 is stretched out outside shell 1；The zero line pin knot
Structure includes zero line pin 91 and zero line pin extension 92, and the zero line pin extension 92 is plugged in zero line pin grafting position 53
On, so that the upper end of zero line pin extension 92 is equipped with zero curve stationary contact 93 by zero line pin structure positioning, zero line pin extends
The lower end in portion 92 is electrically connected with zero line pin 91, and zero line pin 91 stretches out outside shell 1；The other end of the firewire movable contact spring 64 with
Firewire stationary contact 73 is corresponding and can touch electrical connection, and the other end of the ground wire movable contact spring 65 is corresponding with ground wire stationary contact 83
And electrical connection can be touched, the other end of the zero curve movable contact spring 66 is corresponding with zero curve stationary contact 93 and can touch electrical connection；It is disconnected
When opening, the other end of firewire movable contact spring 64 and firewire stationary contact 73 are opened away from, the other end of ground wire movable contact spring 65 and ground wire stationary contact
Point 83 open away from and zero curve movable contact spring 66 the other end and zero curve stationary contact 93 open away from >=3mm, the length of ground wire movable contact spring 65
Degree is greater than firewire movable contact spring 64 and zero curve movable contact spring 66, to achieve the purpose that three poles are protected.The spring of the relay assembly 4
42 one end is connect with magnetic conduction iron frame 41, and the other end of spring 41 is connect with magnetic conduction iron plate 61；The live prong 71, ground wire are inserted
Foot 81 and zero line pin 91 are fixed on shell 1.
In use, due to there is relay rack, make firewire movable contact spring 64, ground wire movable contact spring 65 and zero curve movable contact spring 66 open away from
Reach >=3mm in the case where, solve the structure problems such as the mutually isolated insulation that leakage is protected between pin and relay metalwork, after
Electric appliance is easily accommodated in leakage protecting plug, compact-sized, and circuit simply can be mass.Due to the length of ground wire movable contact spring 65
Degree is greater than the length of firewire movable contact spring 64 and zero curve movable contact spring 66, ground wire when ground wire is first closed, disconnects when meeting closure in this way
The requirement disconnected afterwards.
When normal power-up working condition, relay assembly 4 is powered and drives magnetic conduction iron plate 6 to lower swing, firewire movable contact spring
64 are electrically connected with firewire stationary contact 73, and zero curve movable contact spring 66 is electrically connected with zero curve stationary contact 93, and ground wire movable contact spring 65 and ground wire are quiet
Contact 83 is electrically connected, to achieve the purpose that normal power-up.
When being in leakage condition, relay assembly 4 powers off and magnetic conduction iron plate 6 is driven to be swung up, firewire movable contact spring 64
It is disconnected with firewire stationary contact 73, zero curve movable contact spring 66 and zero curve stationary contact 93 disconnect, to have the function that power-off, protection is used
The safety of person.
In the present embodiment, the movable contact spring component 6 further includes cleat insulator 63；The cleat insulator 63 is mounted on insulation
Partition 62, cleat insulator 63 clamps one end of firewire movable contact spring 64, ground wire movable contact spring 65 and zero curve movable contact spring 66, in the firewire
The other end of movable contact spring 64, ground connection movable contact spring 65 and zero curve movable contact spring 66 is respectively equipped with firewire movable contact 641, ground connection movable contact
651 and zero curve movable contact 661, the firewire movable contact 641, ground connection movable contact 651 and zero curve movable contact 661 are quiet with firewire respectively
Contact 73, ground connection stationary contact 83 and zero curve stationary contact 93 are corresponding.
In the present embodiment, live prong grafting position 51 is " L " type slot, and the horizontal part of " L " type slot is located at peace
The bottom of position 54 is filled, longitudinal portion of " L " type slot is located on the side of installation position 54 and between two location structures 55, described
Live prong extension 72 is L-shaped and is plugged in " L " type slot, " L " type slot in live prong grafting position 51
The end of horizontal part be equipped with firewire and bend position 511, the gradient of firewire bending position 511 and live prong 71 is adapted；
Earth pin grafting position 52 is " L " type slot, and the horizontal part of " L " the type slot is located at relay assembly installation position 54
Bottom, longitudinal portion of " L " type slot be located at the top of the side of relay assembly installation position 54 and be located at two fixed structures 55 it
Between, the earth pin extension 82 is L-shaped and is plugged in " L " type slot；Zero line pin grafting position 53 is " L " type
Slot, the horizontal part of " L " the type slot are located at 54 bottom of relay assembly installation position, longitudinal portion of " L " type slot be located at after
The top of the side of electric appliance component installation position 54 and between two fixed structures 55, the zero line pin extension 92 are in " L "
Shape is simultaneously plugged in " L " type slot, is equipped with zero curve in the end of the horizontal part of " L " type slot of zero line pin grafting position 53
Position 531 is bent, the zero curve bending position 531 and the gradient of zero line pin 91 are adapted.
In the present embodiment, it is equipped with firewire lead welding opening 74 on the live prong extension 72, is inserted in ground connection
Foot extension 82 is equipped with ground lead welding opening 84, and zero curve lead welding opening is equipped on zero line pin extension 92
94；The firewire lead welding opening 74, ground lead welding opening 84 and zero curve lead welding opening 94 pass through lead respectively
It is electrically connected with wiring board 2.
It in the present embodiment, further include pin pad 13 and waterproof pad 14；The pin pad 13 and waterproof pad 14 are located at
In shell 1, pin pad 13 is sleeved on live prong 71, grounding pin 81 and zero line pin 91, the upper surface of pin pad 13 with
Relay rack 5 is sleeved on live prong 7, grounding pin 8 and zero line pin 9 against, waterproof pad 14 and bears against and pin
The lower end surface of pad 13 and shell 1 lean.
In the present embodiment, the mounting base 3 further includes two isolation covers 31 and tripping frame 32；Two isolation covers 31 and tripping frame
32 are respectively mounted on the circuit board 2, and firewire movable contact spring 64 and zero curve movable contact spring 66 be located in corresponding isolation cover 31
To which firewire movable contact spring 64, ground connection movable contact spring 65 and zero curve movable contact spring 66 to be spaced one from, the is equipped on two isolation covers 31
One clasp 312 and connecting column 313, two first clasps 312 are buckled on relay rack 5, two in succession column 313 pass through screw and relay
Device frame 5 is fixedly connected.
In the present embodiment, the location structure 55 includes the second fastener 551 and third fastener 552, second fastener
551 and third fastener 552 be located at the both ends of 54 side of installation position, the second fastener 551 and third fastener 552 are buckled in relay
Position relay assembly 4 in device assembly 4；The mounting structure 56 is L-type connecting column, and two L-type connecting columns are located at installation position 54
Two sides, L-type connecting column is fixedly connected by screw with two connecting columns 313 of isolation cover 31.
It in the present embodiment, further include the first drop-away reset elastic slice 10, the second drop-away reset elastic slice 11 and releasing structure 12；
Releasing structure 10 is mounted in tripping frame 32 and is electrically connected with circuit board 2, the first drop-away reset elastic slice 10 and the second tripping
In the left end installation assist side 2 of reseting shrapnel 11 and it is electrically connected, the first drop-away reset elastic slice 10 and the second drop-away reset elastic slice
11 right end is resisted against on the pressure arm 126 of releasing structure 12, and the right end of the first drop-away reset elastic slice 10 can be with one on wiring board 2
Contact touching is connected or disconnected with, and the right end of the second drop-away reset elastic slice 11 simultaneously can touch electricity with another contact on wiring board 2
It connects or disconnects.
In the present embodiment, the releasing structure 12 further includes reset key 121, iron core 122, little spring 123, trip line
Circle 124, tripping card 125 and big spring 127；The reset key 121 is plugged in tripping frame 32 and can axially move up and down,
The upper end of reset key 121 passes through wiring board 2 and stretches out to form press section outside shell 1, and limit is equipped on reset key 121
Position baffle 1211 and locating groove 1212, the tripping coil 124 are mounted in tripping frame 32, are all provided in the two sides of tripping frame 32
There is longitudinal opening sliding slot 321；The iron core 122 and little spring 123 are each provided in tripping coil 124, and iron core 122 is in trip line
Horizontally moveable in circle 124, the left end of little spring 123 is resisted against on tripping coil 124, and the right end of little spring 123 is resisted against iron
On 122 tail end of core, the tripping long narrow opening portion in 125 left end of card be fastened in the ring-like card slot in head of iron core 122 and can on
Lower movement, the pressure arm 126 are located in tripping frame 32, and pressure arm 126 is set on reset key 121 and opposite can move up and down,
It is equipped with socket 1262 at the middle part of pressure arm 126, the right part square aperture of tripping card 125 is fastened in socket 1262, tripping card
When piece 125 pushes iron core 122 to move forward with the elastic force of little spring 123, the right part square aperture of tripping card 125 can be caught in
Reset key 121 is latched with pressure arm 126 to be integrated；The lower end of the big spring 127
It is resisted against the bottom of tripping frame 32, the upper end of big spring 127 is resisted against the tail portion of reset key 121, two arms of the pressure arm
It can be moved up and down in opening sliding slot 321；The first drop-away reset elastic slice 10 and the second drop-away reset elastic slice 11 are born against
On two arms of pressure arm 126.
When being in off-position, tripping coil no power, iron core 122 moves right under the pulling force of little spring 123, institute
It states tripping card 125 and is detached from locating groove 1212, the big spring 127 pushes reset key 121 to move up, the pressure arm
126 and tripping card 125 move down, the first drop-away reset elastic slice 10 and the second drop-away reset elastic slice 11 to lower swing,
To have the function that power-off, the safety of user is protected.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to institute
The embodiment of description.For the ordinary skill in the art, the principles of the present invention and objective are not being departed from
In the case of to these embodiments carry out it is a variety of variation, modification, replacement and deformation still fall in the protection scope of the utility model
It is interior.
Claims (8)
1. a kind of three pole on-off leakage protecting plugs, it is characterised in that including：
Shell（1）And wiring board（2）；The wiring board（2）It is mounted on shell（1）It is interior；
Mounting base（3）, relay assembly（4）And relay rack（5）；The mounting base（3）Assist side is installed（2）On, installation
Seat（3）Including two isolation covers（31）And tripping frame（32）；Two isolation cover（31）And tripping frame（32）Be installed in route
Plate（2）On, in two isolation covers（31）It is equipped with the first clasp（312）And connecting column（313）, two first clasps（312）It is buckled in
Relay rack（5）On, two columns in succession（313）Pass through screw and relay rack（5）It is fixedly connected；The relay rack（5）Including
Installation position（54）, in the installation position（54）On be respectively equipped with live prong grafting position（51）, earth pin grafting position（52）And
Zero line pin grafting position（53）, in installation position（54）Two sides be equipped with location structure（55）And mounting structure（56）, the peace
Assembling structure（56）Mounting base is mounted on by fastener（3）Above thus by installation position（54）It is fixed on mounting base（3）On, it is described after
Electric appliance component（4）It is mounted on installation position（54）It goes up and passes through location structure（55）Positioning；
Movable contact spring component（6）；The movable contact spring component（6）Including magnetic conduction iron plate（61）, insulating barrier（62）, firewire movable contact spring
（64）, ground wire movable contact spring（65）And zero curve movable contact spring（66）；The magnetic conduction iron plate（61）It is mounted on relay assembly（4）Magnetic conduction
Iron frame（41）Above and it can swing up and down, the insulating barrier（62）It is mounted on magnetic conduction iron plate（61）On, the relay assembly（4）
Spring（42）Make movable contact spring component（6）It resets；The firewire movable contact spring（64）, ground wire movable contact spring（65）And zero curve movable contact spring
（66）One end be installed in insulating barrier（62）It above and is respectively electrically connected with firewire L, ground wire E and zero curve N, firewire movable contact spring
（64）, ground wire movable contact spring（65）And zero curve movable contact spring（66）Length >=18mm, ground wire movable contact spring（65）Length be greater than fire
Line movable contact spring（64）And zero curve movable contact spring（66）Length；Firewire movable contact spring（64）And zero curve movable contact spring（66）It is located at respectively
Corresponding isolation cover（31）It is interior to by firewire movable contact spring（64）, ground connection movable contact spring（65）And zero curve movable contact spring（66）Respectively every
It opens；
Respectively with the live prong structure of circuit board electrical connection, earth pin structure and zero line pin structure；The live prong
Structure includes live prong（71）And live prong extension（72）；The live prong extension（72）It is plugged in live prong
Grafting position（51）On, in live prong extension（72）Upper end be equipped with firewire stationary contact（73）, live prong extension（72）
Lower end and live prong（71）Electrical connection, live prong（71）Stretch out shell（1）Outside；The earth pin structure includes ground wire
Pin（81）And earth pin extension（82）, the earth pin extension（82）It is plugged in earth pin grafting position（52）
On, earth pin extension（82）Upper end be equipped with ground wire stationary contact（83）, earth pin extension（82）Lower end and ground wire
Pin（81）Electrical connection, earth pin（81）Stretch out shell（1）Outside；The zero line pin structure includes zero line pin（91）And zero
Line pin extension（92）, the zero line pin extension（92）It is plugged in zero line pin grafting position（53）On, zero line pin prolongs
Extending portion（92）Upper end be equipped with zero curve stationary contact（93）, zero line pin extension（92）Lower end and zero line pin（91）It is electrically connected
It connects, zero line pin（91）Stretch out shell（1）Outside；The firewire movable contact spring（64）The other end and firewire stationary contact（73）It is corresponding
And electrical connection can be touched, the ground wire movable contact spring（65）The other end and ground wire stationary contact（83）It is corresponding and can touch and be electrically connected
It connects, the zero curve movable contact spring（66）The other end and zero curve stationary contact（93）It is corresponding and electrical connection can be touched；When disconnection, firewire
Movable contact spring（64）The other end and firewire stationary contact（73）Open away from, ground wire movable contact spring（65）The other end and ground wire stationary contact
（83）Open away from and zero curve movable contact spring（66）The other end and zero curve stationary contact（93）Open away from >=3mm, ground wire movable contact spring
（65）Length be greater than firewire movable contact spring（64）And zero curve movable contact spring（66）.
2. three pole on-off leakage protecting plug according to claim 1, it is characterised in that the movable contact spring component（6）Also wrap
Include cleat insulator（63）；The cleat insulator（63）It is mounted on insulating barrier（62）, cleat insulator（63）Clamp firewire movable contact spring
（64）, ground wire movable contact spring（65）And zero curve movable contact spring（66）One end, in the firewire movable contact spring（64）, ground wire movable contact spring（65）
And zero curve movable contact spring（66）The other end be each provided with firewire movable contact respectively（641）, ground connection movable contact（651）And the dynamic touching of zero curve
Point（661）, the firewire movable contact（641）, ground connection movable contact（651）And zero curve movable contact（661）Respectively with respective firewire
Stationary contact（73）, ground connection stationary contact（83）And zero curve stationary contact（93）It is corresponding.
3. three pole on-off leakage protecting plug according to claim 1, it is characterised in that live prong grafting position
（51）It is " L " type slot, the horizontal part of " L " type slot is located at installation position（54）Bottom, longitudinal portion of " L " type slot is located at peace
Fill position（54）Side on and be located at two location structures（55）Between, the live prong extension（72）It is L-shaped and plug
In " L " type slot, in live prong grafting position（51）" L " type slot horizontal part end be equipped with firewire bend position
（511）, firewire bending position（511）With live prong（71）Gradient be adapted；Earth pin grafting position（52）
It is " L " type slot, the horizontal part of " L " the type slot is located at relay assembly installation position（54）Bottom, " L " type slot it is vertical
Relay assembly installation position is located to portion（54）Side top and be located at two location structures（55）Between, the earth pin
Extension（82）It is L-shaped and be plugged in " L " type slot；Zero line pin grafting position（53）It is " L " type slot, it is described
The horizontal part of " L " type slot is located at relay assembly installation position（54）Longitudinal portion of bottom, " L " type slot is located at relay assembly
Installation position（54）Side top and be located at two location structures（55）Between, the zero line pin extension（92）It is L-shaped
And be plugged in " L " type slot, in zero line pin grafting position（53）" L " type slot horizontal part end be equipped with zero curve
Bend position（531）, zero curve bending position（531）With zero line pin（91）Gradient be adapted.
4. three pole on-off leakage protecting plug according to claim 1, it is characterised in that in the live prong extension
（72）It is equipped with firewire lead welding opening（74）, in grounding pin extension（82）It is equipped with ground lead welding opening
（84）, in zero line pin extension（92）It is equipped with zero curve lead welding opening（94）；The firewire lead welding opening（74）,
Ground lead welding opening（84）And zero curve lead welding opening（94）Pass through lead and wiring board respectively（2）Electrical connection.
5. three pole on-off leakage protecting plug according to claim 1, it is characterised in that further include pin pad（13）And it is anti-
Glue pad（14）；The pin pad（13）And waterproof pad（14）Positioned at shell（1）It is interior, pin pad（13）It is sleeved on live prong
（71）, earth pin（81）And zero line pin（91）On, pin pad（13）Upper surface and relay rack（5）Against marine glue
Pad（14）It is sleeved on live prong（7）, grounding pin（8）And zero line pin（9）And it bears against and pin pad（13）Lower end
Face and shell（1）It leans.
6. three pole on-off leakage protecting plug according to claim 1, it is characterised in that the location structure（55）Including
Second fastener（551）And third fastener（552）, second fastener（551）And third fastener（552）It is located at installation position
（54）The both ends of side, the installation position（54）Second fastener of two sides（551）And third fastener（552）It is buckled in relay group
Part（4）On make relay assembly（4）Positioning；The mounting structure（56）It is L-type connecting column, two L-type connecting columns are located at installation position
（54）Two sides, L-type connecting column pass through screw and isolation cover（31）Two connecting columns（313）It is fixedly connected.
7. three pole on-off leakage protecting plug according to claim 1, it is characterised in that further include the first drop-away reset bullet
Piece（10）, the second drop-away reset elastic slice（11）And releasing structure（12）；Releasing structure（12）It is mounted on tripping frame（32）It is interior and with
Wiring board（2）Electrical connection, the first drop-away reset elastic slice（10）And the second drop-away reset elastic slice（11）Left end installation it is online
Road plate（2）It goes up and is electrically connected, the first drop-away reset elastic slice（10）And the second drop-away reset elastic slice（11）Right end be resisted against tripping
Structure（12）Pressure arm（126）On, the first drop-away reset elastic slice（10）Right end can be with wiring board（2）On a contact touch electricity
It connects or disconnects, the second drop-away reset elastic slice（11）Right end and can be with wiring board（2）On another contact touching electrical connection or
It disconnects.
8. three pole on-off leakage protecting plug according to claim 7, it is characterised in that the releasing structure（12）Also wrap
Include reset key（121）, iron core（122）, little spring（123）, tripping coil（124）, tripping card（125）And big spring
（127）；The reset key（121）It is plugged in tripping frame（32）It is interior and can axially move up and down, reset key（121）Upper end
Portion passes through wiring board（2）Stretch out shell（1）Outside to form press section, in reset key（121）It is equipped with postive stop baffle
（1211）And locating groove（1212）, the tripping coil（124）It is mounted on tripping frame（32）It is interior, in tripping frame（32）Two sides
It is equipped with longitudinal opening sliding slot（321）；The iron core（122）And little spring（123）It is each provided at tripping coil（124）It is interior, iron
Core（122）In tripping coil（124）It is interior horizontally moveable, little spring（123）Left end be resisted against tripping coil（124）On, it is small
Spring（123）Right end be resisted against iron core（122）On tail end, the tripping card（125）The long narrow opening portion in left end is fastened on iron
Core（122）The ring-like card slot in head in and can move up and down, the pressure arm（126）Positioned at tripping frame（32）It is interior, pressure arm（126）Set
It is located at reset key（121）It above and opposite can move up and down, in pressure arm（126）Middle part be equipped with socket（1262）, card of threading off
（125）Right part square aperture be fastened on socket（1262）It is interior, card of threading off（125）With little spring（123）Elastic force push
Iron core（122）When forward movement, card of threading off（125）Right part square aperture can be caught in locating groove（1212）And socket
（1262）In make reset key（121）With pressure arm（126）Lock is integrated；The big spring（127）Lower end be resisted against tripping
Frame（32）Bottom, big spring（127）Upper end be resisted against reset key（121）Tail portion, two arms of the pressure arm can be
Be open sliding slot（321）Inside move up and down；The first drop-away reset elastic slice（10）And the second drop-away reset elastic slice（11）It supports respectively
Lean against pressure arm（126）Two arms on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820478910.4U CN208142466U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820478910.4U CN208142466U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208142466U true CN208142466U (en) | 2018-11-23 |
Family
ID=64291118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820478910.4U Active CN208142466U (en) | 2018-04-07 | 2018-04-07 | Three pole on-off leakage protecting plugs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208142466U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461996A (en) * | 2018-04-07 | 2018-08-28 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plugs |
-
2018
- 2018-04-07 CN CN201820478910.4U patent/CN208142466U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108461996A (en) * | 2018-04-07 | 2018-08-28 | 佛山市顺德区信辉达电子有限公司 | Three pole break-make leakage protecting plugs |
| CN108461996B (en) * | 2018-04-07 | 2023-09-22 | 佛山市顺德区信辉达电子有限公司 | Tripolar on-off leakage protection plug |
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