CN101042961A

CN101042961A - Electrical component with special contact tip structure

Info

Publication number: CN101042961A
Application number: CN 200610039169
Authority: CN
Inventors: 陈庆荣
Original assignee: 陈庆荣
Current assignee: Sanming Power Supply Co of State Grid Fujian Electric Power Co Ltd; Ninghua Power Supply Co of State Grid Fujian Electric Power Co Ltd
Priority date: 2006-03-21
Filing date: 2006-03-21
Publication date: 2007-09-26
Anticipated expiration: 2026-03-21
Also published as: CN101042961B

Abstract

Electric appliance equipped with special contactor structure is used to control the power source of the equipment, and it is also used to protect the equipment and circuit out of damage of destroyed fault current. The contactor includes the first contactor and the second contactor which form a pair, the two contactors can reciprocate to turn on or cut off current, and it divides the work, the first contacor is used to turn on and cut off normal current, and cut off the fault current whose destroy is not big for electric appliance; the second contactor flicks initiatively when the circuit is over loaded, at that time, the first contactor acts with it, the two contactors moves towards the opposite direction to cut off the current to realize short protection. The electric appliance possesses high frequency and long service life of relay (or contactor), but also high cutting off property of breaker, and it can make electric appliance with high cutting off property realize remote distance and auto control.

Description

Electric elements with special structure of contact terminal

[technical field]

The invention relates to a kind of electric elements, be meant a kind of electric elements especially with special structure of contact terminal.

[background technology]

The existing contact that is used for controlling the electric equipment products of power consumption equipment power supply, usually by moving and the quiet two contacts structure of contact terminal that partners, generally realize the through and off of power consumption equipment electric current by the action of control moving contact, and the disjunction fault current, fixed contact then is actionless.But the design fixed contact is also arranged when being short-circuited, owing to be created in the electronic power of tearing open at contact place during short circuit, make that fixed contact is passive to be flicked, in the hope of improving breaking capacity, but this design can not be locked in the state of flicking after flicking in that contact is passive, after the electronic power of tearing open disappears or slackens, may produce arcing once more and burn out contact.

[summary of the invention]

Technical problem to be solved by this invention, be to provide a kind of electric elements with special structure of contact terminal, it can either be nearby or at a distance, manually or automatically control and connect and the disjunction normal current, and disjunction is to the destructive little various fault currents of electrical equipment itself, short circuit current that again can the disjunction high power capacity.

The present invention has the electric elements of special structure of contact terminal, its structure of contact terminal comprises two contacts that partnered by first contact and second contact, described first contact and second contact separately can both be initiatively reciprocating, cooperate with each other and switch on and off electric current, described first contact is a moving contact, be used for connecting and the normal electric current of disjunction, and disjunction is to the destructive little fault current of electrical equipment itself; Second contact is failure to actuate usually, takes place initiatively to flick above the moment of its design load (short circuit) at circuit, and at this moment, first contact is action thereupon also, and two contacts spaced out jointly round about in moment, turn-off current.

The action of described first contact is to realize by the working power of controlling it, and second contact is the spring energy-storage contact, and manpower resets, magnetic trip.

Described first contact is installed on the contact supporter, and is hinged by a bearing pin between first contact and the contact supporter, and again by a torque spring, making has certain pressure each other between first contact and the contact supporter.

Described contact supporter is fixed on the movable part of the electric elements of using the electromagnetic force adhesive, movable part is articulated on the fulcrum of described electric elements support, the other end of movable part is by a normality reset tension spring, be connected with the extension spring hook of described electric elements support, make second contact and first contact remain on normally open (off-state when not working).

Described second contact is articulated on the support of electric elements by the second contact supporter, is supported by support arm, connecting rod, tripping, snap close, controlled by a short-circuit release.

Described second contact is supported by a pair of hinged support arm, the hinged connecting rod of the pin joint of support arm, and the other end of described connecting rod and a tripping are hinged, and the bottom lodge of tripping is in a snap close, wherein the iron core snapping of the snap close other end and short-circuit release.

One counter-force energy storage extension spring is hung on the two ends of described pair of support arms.

The other end of described tripping hinged one push rod that resets.

The advantage that the present invention has the electric elements of special structure of contact terminal is: two contacts that partner, separately can both be initiatively reciprocating, normal current, the disjunction various faults electric current of cooperating with each other and switching on and off power consumption equipment, and disjunction high power capacity short circuit current.

[description of drawings]

The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.

Fig. 1 is the structural perspective that contact that the present invention has electric elements of special structure of contact terminal is in closure state.

Fig. 2 is the structural perspective that contact that the present invention has electric elements of special structure of contact terminal is in off-state.

Fig. 3 is the application schematic diagram of electric elements in electromagnetic starter that the present invention has special structure of contact terminal, and wherein contact is in closure state.

Fig. 4 is the application schematic diagram of electric elements in electromagnetic starter that the present invention has special structure of contact terminal, and wherein contact is in off-state.

[embodiment]

The present invention, the structure of contact terminal that has in the electric elements 1 of special structure of contact terminal comprises: first contact 10, second contact 20, iron core 30 and short-circuit release 40.These electric elements 1 can be relay or contactor, and first contact 10 and second contact 20 all are articulated on the support of electric elements 1, and first contact 10 itself do not had elasticity, are to be the conductor of main purpose with the loaded current.

First contact 10 wherein, it is the moving contact that is similar in the ordinary appliances element, be used for connecting and the normal electric current of disjunction, and disjunction is to the destructive little various fault currents of electrical equipment itself, the action of first contact 10 is to realize by controlling its working power: this first contact 10 is installed on the contact supporter 12, and it is hinged between first contact 10 and the contact supporter 12 by a bearing pin 13, thereby 12 movement relations that clapper-type is arranged of first contact 10 and contact supporter, pass through a torque spring 14 between first contact 10 and the contact supporter 12 again, make certain pressure is arranged each other, make

first contact

10 and 20 of second contacts that certain excess of stroke and contact pressure be arranged, contact supporter 12 is fixed on the movable part 16 of the electric elements 1 of using the electromagnetic force adhesive, movable part 16 is articulated on the fulcrum of described electric elements support 17, the other end of movable part 16 is by the hook tension of a normality reset tension spring 18 with the support 17 of electric elements 1, make first contact remain on normally open (two contact separated position) usually, the iron core 30 of electric elements 1 is getting the electromagnetic attraction that electric back produces, make first contact 10 cross contact supporter 12 and movable part 16, move to second contact, 20 directions rapidly, and closed energising, otherwise, then under the effect of normality reset tension spring 18, make first contact 10 discharge turn-off current.

Second contact 20 is the fixed contacts in the similar ordinary appliances, usually be failure to actuate, but when circuit takes place to surpass its design load (short circuit), initiatively move towards first contact, 10 opposite directions: second contact 20 is by the second contact supporter 21, support by a pair of hinged support arm 22, the pin joint of support arm 22 is hinged with a connecting rod 24 again, the other end of this connecting rod 24 is supported by a tripping 26, the bottom lodge of tripping 26 is in a snap close 27, the other end of tripping 26 connects push rod 28, the one counter-force energy storage extension springs 29 that reset and is hung on the two ends of two support arms 22.

Iron core 42 snappings of snap close 27 and short-circuit release 40 wherein; and be controlled by this iron core 42; in the moment that is short-circuited fault; the powerful magnetic force that short circuit current produced through trip coil; the iron core 42 that makes short-circuit release 40 produces in moment and axially moves inward; 27 actions of pulling snap close; make tripping 26 can not get the support of snap close 27 and thread off; because support arm 22 can not get the support of tripping 26 by connecting rod 24; angle of bend is reduced rapidly under the effect of counter-force energy storage extension spring 29, makes the diminishing apart from moment of two strong points of second contact 20, spurs second contact 20 and flicks towards the rightabout of first contact 10; at this moment; first contact 10 is action thereupon also, and almost at the same time, first contact 10 and second contact 20 space out rapidly round about; turn-off current is realized short-circuit protection.

After short trouble disposes, promptly can promote the push rod 28 that resets, the push rod 28 that then resets drives tripping 26 motions, makes tripping 26 be buckled in snap close 27, simultaneously, by connecting rod 24, support arm 22 second contact 20 is resetted.

The employed first contact working power control of the technology of the present invention, can adopt existing various power supply control technology, be 200410012821.3 at another number of patent application that adopts applicant especially, name is called the power supply control technology of " with the release of the electric elements of microelectronics control ", can realize the shared release of kinds of protect function, can automatic or manual, nearby or far distance controlled contact closure or disconnection; Because the frame mode of the technology of the present invention contact adopting by reference relay (or contactor), so can high-frequency and long-life; While is the tripper structure mode of adopting by reference circuit breaker again, so can realize high breaking again.

Claims

1. electric elements with special structure of contact terminal, its structure of contact terminal comprises two contacts that partnered by first contact and second contact, it is characterized in that: described first contact and second contact are initiatively reciprocating separately, cooperate with each other and switch on and off electric current, described first contact is a moving contact, second contact is failure to actuate usually, take place initiatively to flick at circuit above the moment of its design load (short circuit), at this moment, first contact is action thereupon also, two contacts spaced out jointly round about in moment, interrupting short circuit.

2. the electric elements with special structure of contact terminal as claimed in claim 1 is characterized in that: the action of described first contact is to realize by the working power of controlling it, and second contact is the spring energy-storage contact, and manpower resets, magnetic trip.

3. the electric elements with special structure of contact terminal as claimed in claim 2 is characterized in that: described second contact is articulated on the support of electric elements by the second contact supporter, controls by a short-circuit release.

4. the electric elements with special structure of contact terminal as claimed in claim 3, it is characterized in that: described second contact is by the second contact supporter, support by a pair of hinged support arm, the hinged connecting rod of the pin joint of support arm, the other end of described connecting rod and a tripping are hinged, the bottom lodge of tripping is in a snap close, wherein the iron core of snap close other end snapping short-circuit release.

5. the electric elements with special structure of contact terminal as claimed in claim 4 is characterized in that: the two ends of a counter-force energy storage extension spring are hung on the two ends of described pair of support arms.

6. the electric elements with special structure of contact terminal as claimed in claim 4 is characterized in that: the upper end of described tripping connects the push rod that resets.

7. the electric elements with special structure of contact terminal as claimed in claim 1, it is characterized in that: described first contact is articulated on the contact supporter by a bearing pin, the movement relation that clapper-type is arranged between first contact and contact supporter is exerted pressure by a torque spring or spiral spring between first contact and the contact supporter.

8. the electric elements with special structure of contact terminal as claimed in claim 7, it is characterized in that: described contact supporter is fixed on the movable part of electric elements of electromagnetic force adhesive, movable part is articulated on the support of described electric elements, and the other end of movable part is strained by the hook on a normality reset tension spring and the described electric elements support.