A kind of earth leakage circuit-breakerTechnical field
The utility model is specifically related to a kind of earth leakage circuit-breaker.
Background technology
Increasingly widespread with industrial production facilities equipment and household electrical appliance, the chance of people and electrical contact is more and more,Electrical equipment breaks down to happen occasionally the case where leading to personnel's electric shock injures and deaths.For personal safety and equipment safety, electric leakage is protectedShield switch has been widely used as an effective electrical safety technique device, and is played the important and pivotal role.
Earth leakage circuit-breaker is typically mounted on the electric appliance that some are used in wet environment, in especially moist place(such as swimming pool, shower house, kitchen, toilet), in wet environment, the wiring board in earth leakage circuit-breaker is easy to make moist,Lead to that earth leakage circuit-breaker malfunctions or even short circuit is burnt out, thus greatly reduces the reliability of earth leakage circuit-breaker work, andAnd its there is also service life defects.
Invention content
The purpose of the utility model is to overcome the defect of the prior art, provide it is a kind of it is simple in structure, stable and reliable for performance,Service life length, waterproof and dampproof earth leakage circuit-breaker.
To achieve the above object, the utility model uses a kind of earth leakage circuit-breaker, includes shell with accommodating cavity, behaviourMake mechanism, leakage protection module, contact system, the shell includes the pedestal set gradually from bottom to top, upper cover, cover,The leakage protection module includes wiring board, zero sequence transformer, be arranged operating mechanism side and with circuit board electrical connectionMagnetictrip, testing button are installed with Damp-proof box in the pedestal, and the wiring board is arranged in Damp-proof box, and anti-Between damp box and wiring board filled with fluid sealant and constitute sealing cooperation, the zero sequence transformer be arranged on Damp-proof box and withCircuit board electrical connection.
The advantageous effect of above structure is：The leakage protection module integrated modular of the earth leakage circuit-breaker, consequently facilitatingThe assembly of leakage protection module is conducive to the efficiency of assembling for improving the earth leakage circuit-breaker, and wiring board is sealed in Damp-proof box,Effectively wiring board can be avoided to make moist, reliability and the safety of earth leakage circuit-breaker work be improved, to which the electric leakage is protectedShield switch can use in wet environment, and the scope of application is more extensive；And the earth leakage circuit-breaker has simple in structure, performanceAdvantage reliable and stable, with long service life.
Particularly, it is respectively set on the both sides of the Damp-proof box there are one hook, each hook is corresponded on the pedestalPlace is respectively arranged with compatible card slot, and the hook is installed in card slot and constitutes the clamping engagement of Damp-proof box and pedestal.Damp-proof box is connect with pedestal by the way of being engaged by clamping, and is convenient for the assembly of Damp-proof box and pedestal, is improved the earth leakage protective and openThe production efficiency of pass.
Particularly, the contact system includes the contact rack, matched with contact rack with operating mechanism linkage settingResetting spring, with contact rack linkage setting movable contact spring, shrapnel, setting in pedestal and with the matched static contact of movable contact spring,The shrapnel is fitted on the upper surface of movable contact spring, and being riveted on one end of the movable contact spring and shrapnel has movable contact, describedMovable contact spring and the other end of shrapnel be fixed on conductive sheet, one end of conductive sheet passes through zero sequence transformer and is connected to terminalsOn son.By being provided with shrapnel on movable contact spring, shrapnel can accelerate movable contact spring to execute separating brake action, improve the earth leakage protective and openThe sensitivity of pass action.
Particularly, it is provided with collision mat on the lower face of the pedestal.When installing the earth leakage circuit-breaker, collision matIt seals and coordinates with wall, collision mat can play waterproof action, improve the water resistance of the earth leakage circuit-breaker.
Description of the drawings
Fig. 1 is the utility model embodiment exploded view.
Fig. 2 is the utility model embodiment internal structure chart.
Fig. 3 is the installation diagram of the utility model embodiment Damp-proof box and wiring board.
Specific implementation mode
As shown in Figures 1 to 3, the utility model embodiment is a kind of earth leakage circuit-breaker, includes the shell with accommodating cavity10, operating mechanism 20, leakage protection module 30, contact system 40, operating mechanism 20 include mechanism rack 21, are rotatably arranged on mechanismThe tripping 23 of handle 22 and handle linkage setting on frame 21 and the matched lock 24 of tripping 23, the shell 10 includePedestal 11, upper cover 12, the cover 13 set gradually from bottom to top, the leakage protection module 30 include wiring board 31, zero sequenceMutual inductor 32 is arranged in 20 side of operating mechanism and the magnetictrip 32, the testing button 33 that are electrically connected with wiring board 31, describedPedestal 11 in be installed with Damp-proof box 34, the wiring board 31 is arranged in Damp-proof box 34, and Damp-proof box 34 and wiring board 31Between filled with fluid sealant and constitute sealing cooperation, the zero sequence transformer 32 be arranged on Damp-proof box 34 and with wiring board 31Electrical connection.As shown in Figures 2 and 3, hook 341 there are one being respectively set on the both sides of the Damp-proof box 34, the pedestal 11It is respectively arranged with compatible card slot at each hook of upper correspondence 341, the hook 341 is installed in card slot and constitutes Damp-proof box34 with the clamping engagement of pedestal 11.Damp-proof box is connect with pedestal by the way of being engaged by clamping, and is convenient for the dress of Damp-proof box and pedestalMatch, improves the production efficiency of the earth leakage circuit-breaker.The contact system 40 includes and the tripping of operating mechanism 20 23The contact rack 41 of dynamic setting, movable contact spring 43, shrapnel with 41 matched resetting spring of contact rack, with the linkage setting of contact rack 4144, setting in the pedestal 11 and with 43 matched static contact 45 of movable contact spring, the shrapnel 44 is fitted in the upper of movable contact spring 43On end face, the movable contact spring 43 has movable contact 431, the movable contact spring 43 and shrapnel 44 with riveting on one end of shrapnel 44The other end is fixed on conductive sheet 46, and one end of conductive sheet 46 passes through zero sequence transformer 32 and is connected on connecting terminal 47.It is logicalIt crosses and is provided with shrapnel on movable contact spring, shrapnel can accelerate movable contact spring to execute separating brake action, improve earth leakage circuit-breaker actionSensitivity.It is provided with collision mat 14 on the lower face of the pedestal 11.When installing the earth leakage circuit-breaker, collision mat withWall sealing cooperation, collision mat can play waterproof action, improve the water resistance of the earth leakage circuit-breaker.
The leakage protection module integrated modular of the earth leakage circuit-breaker, consequently facilitating the assembly of leakage protection module, hasConducive to the efficiency of assembling of the earth leakage circuit-breaker is improved, and wiring board is sealed in Damp-proof box, can effectively avoid wiring board byTide improves reliability and the safety of earth leakage circuit-breaker work, to which the earth leakage circuit-breaker can be in wet environmentIt uses, the scope of application is more extensive；And the earth leakage circuit-breaker is with simple in structure, stable and reliable for performance, service life is longThe advantages of.