CN201365036Y - Circuit protection plug contact suppressing structure - Google Patents

Abstract

The utility model relates to a circuit protection plug contact suppressing structure, which is arranged inside a circuit protection plug shell, and is used for controlling the contact between conductive contacts inside a circuit protection plug, and comprises a plugging pin which is serially connected with a plug through a conducting wire, a plug shell, an electromagnetic coil, a blocking iron core, a fixture block, a fixed contact, a movable contact, a suppressing spring, a push-out spring, an inner-pressure spring, a stop return rod and a movable contact pushing sheet, wherein the movable and the fixed contacts are made of conductive materials, and the movable contact pushing sheet is made of insulation materials; and the circuit protection plug contact spring structure is free from depending on the rebound force of the spring, and utilizes the inner-pressure spring to disconnect the contacts so as to ensure that continuous spring force is always arranged between the movable contact and the fixed contact and to supply adequate compacting contact force, and the service life problem caused by the fatigue of the spring is reduced, and unfavorable contact after being used for a long period of time is free from happening.

Description

The open circuit protection plug contacts is suppressed structure

Technical field

The utility model relates to a kind of attaching plug, refers to that especially the contact of a kind of contact adopts the open circuit protection plug that suppresses structure and increase contact stabilization and reduce resistance to get an electric shock and suppress structure.

Background technology

For prevent electrical equipment the too high melten gel of plug temperature in use takes place or catch fire, short circuit or electric leakage cause forming potential safety hazard or cause the accident; the break protecting that improves electrical equipment just becomes important unusually; therefore many electrical equipment all are provided with the disconnecting plug of tool break protecting; leakage plug has earth leakage protective effect preferably; even earth leakage protective device is not set in the external circuit, the open circuit protection plug also can play earth leakage protective effect preferably.At present common open circuit protection plug all is to adopt that electric wire connects shell fragment in plug, utilizes the elastic force of shell fragment own to be opened a way in the contact, but when being used in the large current interruption device, need be with the temperature of shell fragment thickening could attenuating shell fragment generation itself.But after the shell fragment thickening, can have a strong impact on shell fragment elastic force, elastic force is bad, can cause shell fragment folding life-span deficiency, influences product useful life.

The utility model content

Technical purpose of the present utility model is to have lasting elastic force pressure in order to provide between a kind of conductive contact that is in contact with one another, and stability better open circuit protection plug contacts is suppressed structure.

The utility model open circuit protection plug contacts is suppressed structure; be used to control the contact between the conductive contact in the open circuit protection plug; this open circuit protection plug contacts is suppressed structure and is located in the open circuit protection plug body; this open circuit protection plug contacts is suppressed structure and is comprised the pin of connecting with plug wires; the electric current amplification module; plug body; solenoid; the screens iron core; fixture block; fixed contact; moving contact; suppress spring; the extrapolation spring; interior pressing spring; only block release link and moving contact push jack; moving contact and fixed contact are electric conducting material; the moving contact push jack is an insulating material; metal pin is fixedlyed connected with jack housing in the socket front portion; solenoid central authorities have cylindrical hole; this solenoid is fixedlyed connected with plug body in plug body; suppress in the cylindrical hole that spring is arranged at this solenoid; the screens iron core is the elongated cylindrical structure; the upper end of this screens iron core elongated cylindrical structure outwards convexes with flange; this screens iron core is located in the cylindrical hole of solenoid; the flange of screens iron core is towards the cylindrical hole outside of solenoid; only blocking release link is that an end is provided with backstay; the other end is provided with pressing lever; only block release link and be provided with the extruding inclined-plane near backstay one side; the extruding inclined-plane is provided with draw-in groove near the edge at middle part; the location rod end that only blocks release link is arranged with an extrapolation spring; the pressing lever of the other end is arranged with the bigger interior pressing spring of a diameter; stretch out in pressing lever set hole of pushing from the plug body; the moving contact push jack is "T"-shaped structure; the lower end of moving contact push jack is the divergent ends of "T"-shaped structure; the upper end is the push-and-pull end; moving contact push jack upside is provided with gathering sill; the middle part is provided with the location hole that runs through along the axis; fixture block is " L " shape structure; " L " swallow-tail form kink of this fixture block upside is as dop; fixture block is provided with swallowtail-shaped slide in the side relative with dop along the axis; the flange of the swallowtail-shaped slide of fixture block and screens iron core is slidingly matched; the dop of fixture block passes the location hole of moving contact push jack; the gathering sill of moving contact push jack upside with only block release link and cooperate guide-localization; the draw-in groove that only blocks release link engages the location with the dop of fixture block; the extrapolation spring outwards suppresses this and only blocks release link; interior pressing spring suppresses the push-and-pull end of moving contact push jack; this moving contact push jack promotes the dop of fixture block by location hole; make fixture block being free to slide on the flange of screens iron core; the divergent ends of moving contact push jack is fixedlyed connected with moving contact; fixed contact is fixedly connected with plug body and match with moving contact between moving contact and screens iron core; electric current amplification module input is connected with plug wires; solenoid is connected with the amplification output of electric current amplification module, and the two poles of the earth of fixed contact and moving contact are series in the circuit of lead.

It is that 0.5mm is thick that the pin that this open circuit protection plug contacts is suppressed structure can be designed to thickness; external dimensions is the folding type hollow copper sheet of 1.5mm; thin copper pin is guaranteeing to have under the situation of enough thrusts between pin and the socket; can reduce copper sheet weight effectively, and then reduce Material Cost.

Beneficial effect: open circuit protection plug contacts of the present utility model is suppressed structure when work; hand push only blocks the pressing lever that release link is exposed shell; only block release link overcome the extrapolation spring pressure move downward; the dop of extruding inclined-plane extruding fixture block; fixture block connects the screens iron core and spring is suppressed in extruding; in fixture block enters into the draw-in groove that only blocks release link; this moment moving contact push jack and only block mutual static location between the release link; unclamp pressing lever this moment; the moving contact push jack and only block release link together the extrapolation spring suppressing under move upward together; the moving contact fixedly connected with the moving contact push jack also moves upward; and contact with fixed contact; the circuit of open circuit protection plug is by conducting fully; when opening circuit action; solenoid produces instantaneous big magnetic attraction; the screens iron core inwardly overcomes the pressure that suppresses spring and inwardly moves; fixture block in the moving contact push jack is deviate from draw-in groove; and motion downwards under interior pressing spring resilient force; drive moving contact and fixed contact and disengage, circuit disconnects to play the purpose of circuit breaker protection.This open circuit protection plug contacts is suppressed structure when power path; because the moving contact push jack can produce suitable elastic force pressure to fixed contact under the elastic force effect of extrapolation spring always; therefore can guarantee to have enough tightnesss between moving contact and the fixed contact, the long-time use can not occur because the phenomenon of the loose contact that the generation gap causes yet.In addition; because of not needing the elastic force of shell fragment own to disconnect moving contact; and change by interior pressing spring elastic force contact separation; do not exist shell fragment because of metal fatigue problem such as rupture, can not resilience put in place; add and this open circuit protection plug contacts suppress the used pin of structure to be designed to adopt thickness be that 0.5mm is thick; external dimensions is the folding type hollow copper sheet of 1.5mm; can not influence like this between the pin of this open circuit protection plug and the socket and closely cooperate and copper pin rigidity; and reduce the consumption of the copper material of costliness, finally can reduce the weight and the cost of pin effectively.

For ease of explanation detailed content and the technology relevant, below describe with regard to conjunction with figs. now with the utility model.

Description of drawings

Fig. 1, be the cutaway view of the utility model moving contact when contacting conducting with fixed contact;

Fig. 2, be that the utility model moving contact separates the cutaway view when disconnecting with fixed contact.

Embodiment

Please refer to illustrated in figures 1 and 2; structure chart for a kind of specific embodiment of the utility model; the utility model open circuit protection plug contacts is suppressed structure; be used to control the contact between the conductive contact in the open circuit protection plug; this open circuit protection plug contacts is suppressed structure and is located in the open circuit protection plug body 1; this open circuit protection plug contacts is suppressed structure and is comprised the pin 2 of connecting with plug wires; the electric current amplification module; plug body 1; solenoid 10; screens iron core 8; fixture block 6; fixed contact 16; moving contact 20; suppress spring 11; extrapolation spring 4; interior pressing spring 7; only block release link 5 and moving contact push jack 12; moving contact 20 and fixed contact 16 are electric conducting material; moving contact push jack 12 is an insulating material; metal pin 2 is fixedlyed connected with jack housing in the socket front portion; solenoid 10 central authorities have cylindrical hole; this solenoid 10 is fixedlyed connected with plug body 1 in plug body 1; suppress in the cylindrical hole that spring 11 is arranged at this solenoid 10; screens iron core 8 is the elongated cylindrical structure; the upper end of these screens iron core 8 elongated cylindrical structures outwards convexes with flange 80; this screens iron core 8 is located in the cylindrical hole of solenoid 10; the flange 80 of screens iron core 8 is towards the cylindrical hole outside of solenoid 10; only blocking release link 5 is that an end is provided with backstay 52; the other end is provided with pressing lever 51; only block release link 5 and be provided with the extruding inclined-plane near backstay 52 1 sides; the extruding inclined-plane is provided with draw-in groove 50 near the edge at middle part; backstay 52 ends that only block release link 5 are arranged with an extrapolation spring 4; the pressing lever 51 of the other end is arranged with the bigger interior pressing spring 7 of a diameter; stretch out in pressing lever 51 set hole of pushing from the plug body 1; moving contact push jack 12 is "T"-shaped structure; the lower end of moving contact push jack 12 is the divergent ends of "T"-shaped structure; the upper end is the push-and-pull end; moving contact push jack 12 upsides are provided with gathering sill; the middle part is provided with the location hole that runs through along the axis; fixture block 6 is " L " shape structure; " L " swallow-tail form kink of these fixture block 6 upsides is as dop 60; fixture block 6 is provided with swallowtail-shaped slide 61 along the axis in the side relative with dop; the swallowtail-shaped slide 61 of fixture block 6 is slidingly matched with the flange 80 of screens iron core 8; the dop of fixture block 6 passes the location hole of moving contact push jack 12; the gathering sill of moving contact push jack 12 upsides with only block release link 5 and cooperate guide-localization; the draw-in groove 50 that only blocks release link 5 engages the location with the dop of fixture block 6; extrapolation spring 4 outwards suppresses this and only blocks release link 5; interior pressing spring 7 suppresses the push-and-pull end of moving contact push jack 12; this moving contact push jack 12 promotes the dop of fixture block 6 by location hole; make fixture block 6 being free to slide on the flange 80 of screens iron core 8; the divergent ends of moving contact push jack 12 is fixedlyed connected with moving contact 20; fixed contact 16 is fixedly connected with plug body 1 and match with moving contact 20 between moving contact 20 and screens iron core 8; electric current amplification module input is connected with plug wires; solenoid 10 is connected with the amplification output of electric current amplification module, and the two poles of the earth of fixed contact 16 and moving contact 20 are series in the circuit of lead.

Further; this open circuit protection plug contacts is suppressed the used pin of structure 2, and to be designed to thickness be that 0.5mm is thick; external dimensions is the folding type hollow copper sheet of 1.5mm; can guarantee to have good degree of closely cooperating and rigidity between plug base pin 2 and the socket like this; can reduce simultaneously the consumption of expensive copper material again, to reduce whole cost.

Claims (2)

1; a kind of open circuit protection plug contacts is suppressed structure; this open circuit protection plug contacts is suppressed in the shell that structure is located at the open circuit protection plug; be used to control the contact between the conductive contact in the open circuit protection plug; it is characterized in that: this open circuit protection plug contacts is suppressed structure and is comprised and the pin of connecting with plug wires; the electric current amplification module; plug body; solenoid; the screens iron core; fixture block; fixed contact; moving contact; suppress spring; the extrapolation spring; interior pressing spring; only block release link and moving contact push jack; moving contact and fixed contact are electric conducting material; the moving contact push jack is an insulating material; metal pin is fixedlyed connected with jack housing in the socket front portion; solenoid central authorities have cylindrical hole; this solenoid is fixedlyed connected with plug body in plug body; suppress in the cylindrical hole that spring is arranged at this solenoid; the screens iron core is the elongated cylindrical structure; the upper end of this screens iron core elongated cylindrical structure outwards convexes with flange; this screens iron core is located in the cylindrical hole of solenoid; the flange of screens iron core is towards the cylindrical hole outside of solenoid; only blocking release link is that an end is provided with backstay; the other end is provided with pressing lever; only block release link and be provided with the extruding inclined-plane near backstay one side; the extruding inclined-plane is provided with draw-in groove near the edge at middle part; the location rod end that only blocks release link is arranged with an extrapolation spring; the pressing lever of the other end is arranged with the bigger interior pressing spring of a diameter; stretch out in pressing lever set hole of pushing from the plug body; the moving contact push jack is "T"-shaped structure; the lower end of moving contact push jack is the divergent ends of "T"-shaped structure; the upper end is the push-and-pull end; moving contact push jack upside is provided with gathering sill; the middle part is provided with the location hole that runs through along the axis; fixture block is " L " shape structure; " L " shape kink of this fixture block upside is as dop; fixture block is provided with swallowtail-shaped slide in the side relative with dop along the axis; the flange of the swallowtail-shaped slide of fixture block and screens iron core is slidingly matched; the dop of fixture block passes the location hole of moving contact push jack; the gathering sill of moving contact push jack upside with only block release link and cooperate guide-localization; the draw-in groove that only blocks release link engages the location with the dop of fixture block; the extrapolation spring outwards suppresses this and only blocks release link; interior pressing spring suppresses the push-and-pull end of moving contact push jack; this moving contact push jack promotes the dop of fixture block by location hole; make fixture block being free to slide on the flange of screens iron core; the divergent ends of moving contact push jack is fixedlyed connected with moving contact; fixed contact is fixedly connected with plug body and match with moving contact between moving contact and screens iron core; electric current amplification module input is connected with plug wires; solenoid is connected with the amplification output of electric current amplification module, and the two poles of the earth of fixed contact and moving contact are series in the circuit of lead.

2, open circuit protection plug contacts according to claim 1 is suppressed structure, it is characterized in that it is that thickness is that 0.5mm is thick that this open circuit protection plug contacts is suppressed the pin of structure, and external dimensions is the folding type hollow copper sheet of 1.5mm.

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