CN202121173U

CN202121173U - Anti-leakage plug

Info

Publication number: CN202121173U
Application number: CN2011202653485U
Authority: CN
Inventors: 尹华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-26
Filing date: 2011-07-26
Publication date: 2012-01-18
Anticipated expiration: 2021-07-26

Abstract

The utility model relates to an anti-leakage plug, which comprises a casing. The casing is formed by connecting an upper cover and a lower cover through screws, the upper cover of the casing is provided with through holes for mounting button components, the casing is provided with wire holes for incoming of power wire components, the lower cover is provided with a slot for riveting of a pin component, a body rack and two moving contact plates are connected to a lower casing and arranged inside an inner cavity of the casing, and a core component and a bolt component are mounted inside the body rack. The core component comprises a coil wound on a wire carrier, pins protruding the wire carrier, a fourth spring sleeved into a shaft hole of the wire carrier, and a grenade-shaped moving core inserted into the shaft hole of the wire carrier. The bolt component comprises a pressure bar, an L-shaped insertion connector and a third spring, wherein the L-shaped insertion connector and the third spring are sleeved into the pressure bar, the through hole for mounting in a reset button pull bar is arranged on the upper end face of the pressure bar, another slot which is used for insertion of the L-shaped insertion connector and perpendicularly communicated with the through hole is arranged below the through hole, support structures for supporting the moving contact plates are arranged on the two sides of the pressure bar respectively in a protruding manner, and the tail of the pressure bar is positioned on a fastener which is arranged a horizontal position of the slot in a protruding manner.

Description

Anticreep plug

Technical field

The utility model relates to a kind of electrical equipment, particularly a kind of anticreep plug.

Background technology

In real life, the short circuit between energized conductor-phase line in the electric equipment products electric loop and zero line, the earth, electric equipment shell and various grounded metal pipeline, the structure may cause fire or risk of shock.

For fear of this risk, a kind of anticreep plug that prevents earthing failure is by utilization widely.This plug is installed between power supply and the load, and its effect is to judge the risk of answering electrical appliance whether to have electric leakage through the potential difference that detects between phase line and the zero line.Its operation principle is, in pressing on off mechanism during SR, if leakage current is in normal range (NR); The circuit for detecting detecting is less than abnormal conditions; Governor circuit is given the power supply of on off mechanism control circuit, its disconnect of on off mechanism control circuit closure, load operate as normal.Have potential difference in case detect between phase line and the zero line, earthing failure signal of circuit for detecting output is given governor circuit, and governor circuit is to this signal processing and amplifying and make the outage of on off mechanism control circuit in addition, thereby causes dropout, cuts off the electricity supply.

US6122155 discloses a kind of mini anticreep plug.This plug contains an inefficacy circuit for detecting.The inefficacy circuit for detecting is made up of induction coil and a master control IC of difference between current between an induction phase line and the zero line.When induction coil detected the electric current difference above certain predetermined value, IC will impel the relay circuit outage, thereby caused that the switch on phase line and the zero line breaks off, and reaches and cuts off the electricity supply and the load purpose of connecting.A kind of trip gear of this anticreep plug has also been described in this invention; Its dropout principle is the oblique button lap of two plastic cement materials of placing relatively; Pull-up contact chip energising under the spring tension effect, when electric leakage took place, iron-core coil tiltedly drew back oblique button and outage in the middle part of button in activity.This kind trip gear weak point is two plastic cement material button laps, because coefficient of friction is greater than plastic cement-copper sheet between plastic cement-plastic cement, dropout needs bigger coil magnetic force, and the reliability that can increase manufacturing cost tripping simultaneously reduces, and is prone to produce mistake and jumps.

US6340926 discloses a kind of anticreep plug, and the circuit part of the anticreep plug of this kind and tripping mechanism concentrate and to be assemblied on the same PCB, and it is low to have a production cost, is easy to mass-produced advantage.Its weak point is because circuit is threaded off partly too concentrated with machinery; High-pressure section in the circuit and low-pressure section can't be given and enough separation distances; When pcb board will bear bigger input current, the risk that plug inside can overheatedly cause reliability to reduce and lost efficacy.

Summary of the invention

The purpose of the utility model provides a kind of housing and contains an inefficacy circuit for detecting and novel trip gear; When detecting the leakage current difference above certain predetermined value; Master control IC will impel the trip gear action, makes down circuitry, prevents the anticreep plug of fire or electric shock risk.

The technical solution of the utility model is said anticreep plug; Comprise that offering the perforation, the housing downside that supply the button assembly assembling by loam cake, lower cover through housing, the loam cake of screw connection offers the slot that line hole, the lower cover of the access of power supply source line component are offered confession pin assembly staking; Its special character is: said housing inner chamber is provided with the main frame that is connected to lower casing through screw; And screw is fixing two movable contact springs in the stationary body frame, and core assembly and latch assembly are equipped with in main frame inside.

As preferably: said core assembly is by the 4th spring that is wrapped in suit in coil on the coil holder, stitch that coil holder one termination portion is convexly equipped with, the coil holder axis hole, form like grenade-shaped movable core; Movable core inserts in the coil holder axis hole like grenade-shaped small end.

Constitute by depression bar and the L type plug connector and the 3rd spring that are inserted in the depression bar as preferred said latch assembly; The upper surface of depression bar has the perforation that supplies replacement button pull bar to pack into; The below offer supply L type plug connector that insert with the slot vertical intercommunication of said perforation; The depression bar both sides outwards are convexly equipped with the supporting structure that supplies the movable contact spring supporting respectively; The bottom of depression bar afterbody is positioned at the fastener that the horizontal position of slot upwards is convexly equipped with, offer on the L type plug connector supply the replacement button component to penetrate respectively and with the square hole of depression bar afterbody fastener snapping.

After said core assembly and said latch assembly completion assembling, the L type plug connector of the movable core of core assembly and latch assembly remains a gap or is in no stressed contact condition as preferred.

Compared with prior art, the advantage of the utility model:

In trip gear since in the depression bar back end design be convexly equipped with fastening structure, when L type plug connector pushed in the depression bar body, this fastener can produce plastic deformation, snapped in the square hole of L type plug connector of latch assembly and formed an integral body, convenient for assembly and location.

⑵ be limited in spring in the coil holder axis hole in trip gear, is prone to assembling, can not produce obscission.

⑶ when took place when electric leakage, core assembly promoted latch assembly and travels forward and then thread off, and the replacement button is upspring, and movable contact spring resets downwards under self elastic force effect and causes power-off protection.

⑷ after core assembly and latch assembly are accomplished assembling; Core assembly promotion latch assembly travels forward and then threads off and cuts off the power supply when producing except that electric leakage; Other any time; Core assembly and latch assembly remain a gap, can prevent effectively to have improved reliability of products owing to shake or fall the misoperation of generation.

⑸ when installing main support; Two screws are fixing both sides moving contacting plate simultaneously on fixing main support ground, is different from traditional fixedly mode of moving contacting plate that presses, and its advantage is that this assembly technology has more operability; And detachable, the unlikely a large amount of defective productss of the generation of the connected mode that presses that resemble.

Description of drawings

Fig. 1 is the STRUCTURE DECOMPOSITION sketch map of the anticreep plug of the utility model.

Fig. 2 is that the anticreep plug replacement of the utility model button drag hook drives depression bar and movable contact spring upwards are in conduction state with the closing of contact of pin structure cutaway view when being in the pull-up state.

After Fig. 3 was the outage of the anticreep plug of the utility model, after manually pressing the replacement button and putting in place, latch and pull bar were buckled again and under spring action, are upwards lifted, the structure cutaway view when switching on again.

Fig. 4 is the anticreep plug of the utility model when being in the leakage current state, and core assembly promotes latch assembly and travels forward and thread off, and the replacement button is upspring, and movable contact spring resets downwards under self elastic force effect, and then causes the structure cutaway view of power-off protection state.

Fig. 5 is the front appearance sketch map of the anticreep plug of the utility model.

Fig. 6 is the reverse side schematic appearance of the anticreep plug of the utility model.

Fig. 7 is the interactional configuration relation sketch map of the anticreep plug button assembly of the utility model, pin assembly, main frame, core assembly and latch assembly.

Fig. 8 is the structural representation of the anticreep plug core assembly of the utility model.

Fig. 9 is the cutaway view of the anticreep plug core assembly of the utility model.

Figure 10 is the structural representation of the anticreep plug latch assembly of the utility model.

Figure 11 is the structure cutaway view of the plug connector of the anticreep plug latch assembly of the utility model when not inserting in the depression bar body.

Figure 12 is the structure cutaway view of the plug connector of the anticreep plug latch assembly of the utility model when inserting in the depression bar body.

The primary clustering symbol description:

Case 1 Cover 11 First perforation 111 Second perforation 112 Line hole 113 ? Lower cover 12? Screw 121? Screw 122 ? Line hole 123 ? Button component 2? ? test button 21 second spring 211 reset button 22 rod 222 retractors 2221 first spring 23 power cord assembly 3 line sets 31 supply line 32 mutual inductance coil 33 prong assembly 4? pins 41? movable contact piece 42? main frame 5? screw 51? core assembly 6? coil 61? shaft hole 611? wire rack 62-pin 63 fourth spring 64 active core 65? small end 651? latch assembly 7? strut 71? first perforation 7111 second perforation 7112 slot 7113 fastening structure 7114 support structure 7115 L-type connectors 72? vertical member 721 cross member 722 7221 square hole first second square hole 7222 ? extrusions 7223? third spring 73 PCB board assembly 8?.

Embodiment

The utility model below will combine accompanying drawing to do further to detail:

See also Fig. 1, Fig. 5, Fig. 6, shown in Figure 7; Said anticreep plug; Comprise by loam cake 11, lower cover 12 opposed use screws 121; 122 housing 1, the loam cakes 11 that connect are offered second perforation 112 that supplies that test button 21 packs into, first perforation 111 that replacement button 22 is packed into, and the line hole 113 that power supply source line component 3 is packed into is offered in loam cake 11 lower sides, and lower cover 12 lower sides are offered line hole 123, the lower cover 12 that power supply source line component 3 packs into and offered the slot that supplies 4 rivetings of pin assembly to go into; Lower cover 11 inner chambers are with screw 51 stationary body framves 5; The top of main frame 5 is set with button assembly 2, and the pin assembly 4 that lower cover 12 is gone in riveting is equipped with in the below of main frame 5, and core assembly 6 and latch assembly 7 are equipped with in main frame 5 inside.After core assembly 6 and latch assembly 7 were accomplished assembling, the movable core 65 of core assembly remained a gap or keeps no stressed the contact with the L type plug connector 72 of latch assembly.Said electrical cord assembly 3 is made up of the power line 32 in line cover 31, the cover lambda line cover 31, the mutual inductor 33 of power line 32 connections.

See also Fig. 1, Fig. 5, Fig. 6, shown in Figure 7; Be provided with pcb board assembly 8 between said main frame 5 and the loam cake 11; The replacement button 22 that is respectively equipped with the test button 21 that runs through loam cake second perforation 112 between pcb board assembly 8 and the loam cake 11 and is made up of the drag hook 2221 that is arranged with on the pull bar 222 of button portion and button subordinate side one body extension and the pull bar, the pull bar 222 of replacement button are buckled in latch assembly 7 after passing the perforation of pcb board assembly 8 and main frame 5 respectively.The breach of pcb board snaps in the supporting position of bone of lower cover 12 correspondences in the pcb board assembly 8, and power line 32 is connected with the movable contact spring 42 of PCB and pin assembly respectively with mutual inductor 33 lead-in wires in the electrical cord assembly 3, and the loam cake 11 that closes at last is fixing with screw 121,122.

See also shown in Figure 1ly, said pin assembly 4 is made up of the movable contact spring 42 of the pin that meets the safety standard 41 of a pair of vertical setting and corresponding a pair of horizontally set.

See also Fig. 1, Fig. 8, shown in Figure 9, the 4th spring 64 of suits in the stitch 63 that said core assembly 6 is convexly equipped with by coil 61, coil holder 62, coil holder 62 1 termination portions, coil holder axis hole 611, form like grenade-shaped movable core 65; Stitch 63 is communicated with pcb board 8 corresponding welding holes, to magnetic coil the power supply supply is provided, and the small end 651 of movable core 65 inserts in the coil holder axis hole 611.

See also shown in Figure 4; When finding that leakage current surpasses certain predetermined value; The magnetic force promotion movable core 65 that 61 generations of tripper coil are enough big compresses the 4th spring 64, the three springs 73 simultaneously and moves to L type plug connector 72, impels L type plug connector 72 and pull bar 222 to thread off.

See also Fig. 1, Figure 10, Figure 11, shown in Figure 12, said latch assembly 7 is made up of depression bar 71 and the L type plug connectors 72 that are inserted in the depression bar 71; The top of the upper surface of depression bar 71 has second perforation 7112 that supplies the 3rd spring 73 suits; The slot 7113 that supplies L type plug connector 72 to insert is offered in the below; Depression bar 71 both sides end faces are offered the supporting structure 7115 that supplies movable contact spring 42 supportings respectively; The bottom of depression bar 71 tail ends is in the fastener 7114 that the horizontal position of slot 7113 upwards is convexly equipped with, and depression bar 71 tops have first perforation 7111 that supplies replacement button 22 to insert; L type plug connector 72 is made up of longitudinal member 721 and cross member 722; Longitudinal member 721 tops of L type plug connector 72 are convexly equipped with the protrusion 7223 that can insert in second perforation 7112 towards the direction of depression bar 71, offer on the cross member 722 of L type plug connector 72 and supply first square hole 7221 that replacement button pull bar 222 penetrates and second square hole 7222 of voltage supply bar 71 afterbody fasteners 7114 snappings respectively.

Above-mentioned mutual inductor 33 constitutes by being contained in the winding that annular moulds in the shell; Its induction is wrapped in above it or whether the phase line of passing wherein equates with electric current between zero line; In case when discovery difference between current between the two surpasses certain predetermined value, notify core assembly 6 deenergizations immediately.

See also Fig. 1, shown in Figure 4, said anticreep plug is provided with the testing button combination be made up of testing button 21, the second springs 211, test button contact, and its effect is the analogue ground failure conditions; Generally, testing button 21 has certain distance under the effect of second the spring 211 and contact on the pcb board 8, when pushing testing button 21 with hand; Test button contact touches the contact on the pcb board 8; Produce short circuit, be equivalent to produce an earthing failure condition, this moment, core assembly 6 meetings produced enough big magnetic force; Promote movable core 65 compressions the 4th springs 64 and move, impel L type plug connector 72 and pull bar 222 dropouts with the 3rd spring 73 and to L type plug connector 72.And in a single day thread off, first spring 23 resilience immediately plays pull bar 222, accomplishes power process.The home position that core assembly the 4th spring 64 and latch assembly the 3rd spring 73 also can resilience get back to separately movable core 65 and L type plug connector 72.

See also shown in Figure 3; Manually press replacement button 22; When moving downward stroke and reach a certain position; L type plug connector 72 buckles with pull bar 222 again, and under the tension force effect of first spring 23, drive depression bar 71 and movable contact spring 42 upwards are in energising operating state (seeing also shown in Figure 2) with the closing of contact of pin 41.

The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim scope change and modify, and all should belong to the covering scope of the utility model claim.

Claims

1. anticreep plug; Comprise that offering the perforation, the housing downside that supply the button assembly assembling by loam cake, lower cover through housing, the loam cake of screw connection offers the slot that line hole, the lower cover of the access of power supply source line component are offered confession pin assembly staking; It is characterized in that: said housing inner chamber is provided with the main frame that is connected to lower cover through screw; And screw is fixing two movable contact springs in the stationary body frame, and core assembly and latch assembly are equipped with in main frame inside.

2. according to the said anticreep plug of claim 1, it is characterized in that: said core assembly is by the 4th spring that is wrapped in suit in coil on the coil holder, stitch that coil holder one termination portion is convexly equipped with, the coil holder axis hole, form like grenade-shaped movable core; Movable core inserts in the coil holder axis hole like grenade-shaped small end.

3. according to the said anticreep plug of claim 1, it is characterized in that: said latch assembly is made up of depression bar and the L type plug connector that is inserted in the depression bar; The upper surface of depression bar has the perforation that supplies replacement button pull bar to pack into; The below offer supply L type plug connector that insert with the slot vertical intercommunication of said perforation; The depression bar both sides outwards are convexly equipped with the supporting structure that supplies the movable contact spring supporting respectively; The bottom of depression bar afterbody is positioned at the fastener that the horizontal position of slot upwards is convexly equipped with, offer on the L type plug connector supply the replacement button component to penetrate respectively and with the square hole of depression bar afterbody fastener snapping.

4. according to claim 1 or 2 or 3 said anticreep plugs; It is characterized in that: after said core assembly and said latch assembly completion assembling, the L type plug connector of the movable core of core assembly and latch assembly remains a gap or is in no stressed contact condition.