CN204760326U

CN204760326U - Nonpolarity direct current contactor

Info

Publication number: CN204760326U
Application number: CN201520476407.1U
Authority: CN
Inventors: 赖萍南; 覃奀垚; 陈腾腾
Original assignee: KUNSHAN GUOLI VACUUM ELECTRIC CO Ltd
Current assignee: Kunshan national electronic Polytron Technologies Inc
Priority date: 2015-07-03
Filing date: 2015-07-03
Publication date: 2015-11-11
Anticipated expiration: 2025-07-03

Abstract

The utility model discloses a nonpolarity direct current contactor, sealed contact chamber and two piece at least permanent magnets including a contactor, what be equipped with two fixed stationary contacts and an activity in the contact chamber normally opens the traveling contact piece, and traveling contact piece and two stationary contacts are respectively along matching at least two vertical the correspondence the both sides of the extension line of two stationary contact lines are located to the permanent magnet branch, and the magnetic field direction of this permanent magnet with two stationary contact line orientations parallel and simultaneously with move, the direction of current flow between the stationary contact is perpendicular. This nonpolarity direct current contactor is guaranteeing that through improving direct current contactor inner structure, inside permanent magnet orientation of adjustment direct current contactor and magnetic field intensity realize the two -way performance of cut -offfing of direct current contactor under the unchangeable circumstances of direct current contactor mounting dimension to need not to distinguish positive negative pole, improve the user satisfaction.

Description

Nonpolarity D.C. contactor

Technical field

The utility model relates to a kind ofly can control interrupted electronic component, particularly a kind of nonpolarity D.C. contactor of the closed type that can two-wayly cut-off automatically.

Background technology

At present, on market, existing closed type D.C. contactor is utilize permanent-magnetic field to extinguish the electric arc produced when contactor cut-offs mostly, reaches the object of thorough disconnecting consumers.Its concrete principle is: the electric arc produced when utilizing magnetic field to be disconnected contact elongates, and then realizes the thorough disconnection between contact after weakening arc energy.The necessary direction of electric arc of both sides, contact is contrary, just can realize the object of arc extinguishing.When electric arc direction is identical, both sides electric arc crosses, then cannot realize the disconnection between contact.All there is the defect of forward break performance much larger than negative sense break performance in therefore traditional D.C. contactor.

Along with seal DC contactor constantly promoting the use in new-energy automobile industry and photovoltaic device industry, have higher requirement to the negative sense break performance of D.C. contactor, existing D.C. contactor cannot be met consumers' demand.

Summary of the invention

In order to overcome above-mentioned defect, the utility model provides a kind of nonpolarity D.C. contactor, without the need to distinguishing both positive and negative polarity, having two-way break performance, can well meet consumers' demand.

The utility model in order to the technical scheme solving its technical problem and adopt is: a kind of nonpolarity D.C. contactor, comprise sealed type contact chamber and at least two pieces of permanent magnets of a contactor, movable often contact chip is started built with two fixing fixed contacts and one at described contact chamber, moving contacting plate matches with two fixed contacts are vertically corresponding respectively, at least two pieces of described permanent magnets are divided into the both sides of the extended line of two fixed contact lines, and the magnetic direction of this permanent magnet is parallel with two fixed contact line directions and simultaneously with dynamic, the sense of current between fixed contact is vertical.

As further improvement of the utility model, between described two fixed contacts, be provided with electric arc insulating wall.

As further improvement of the utility model, described moving contacting plate is less than the diameter of described fixed contact with the width at the fixed contact place of coupling.

As further improvement of the utility model, described contact chamber is that pottery is made, and the cross section of this contact chamber is rectangle, and the width dimension of this contact chamber is greater than the distance between two fixed contacts.

The beneficial effects of the utility model are: when ensureing that D.C. contactor installation dimension is constant, by improving D.C. contactor internal structure, adjustment D.C. contactor interior permanent magnets direction and magnetic field intensity, realize the two-way performance of cut-offfing of D.C. contactor, thus without the need to distinguishing both positive and negative polarity, improve user satisfaction.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation;

Arc blow-out view when Fig. 2 .1 is the disconnection of the utility model forward current;

Arc blow-out view when Fig. 2 .2 is the disconnection of the utility model reverse current;

Fig. 3 .1 is round ceramic shell arc blow-out view;

Fig. 3 .2 is square ceramic shell arc blow-out view;

Fig. 4 .1 is narrow shape ceramic package arc blow-out view;

Fig. 4 .2 is wide shape ceramic package arc blow-out view;

Arc blow-out view when Fig. 5 .1 is wide moving contacting plate;

Arc blow-out view when Fig. 5 .2 is narrow moving contacting plate.

By reference to the accompanying drawings, make the following instructions:

1---contact chamber 2---permanent magnet

3---fixed contact 4---moving contacting plate

5---electric arc insulating wall 11---magnetic direction

12---electric arc direction 13---sense of current

Embodiment

By reference to the accompanying drawings; the utility model is elaborated; but protection range of the present utility model is not limited to following embodiment, the simple equivalence namely in every case done with the utility model claim and description changes and modifies, and all still belongs within the utility model patent covering scope.

As shown in Figure 1, a kind of nonpolarity D.C. contactor, comprise contact chamber 1 and at least two pieces of permanent magnets 2 of the sealed type of a contactor, movable often start contact chip 4 at contact chamber built with two fixing fixed contacts 3 and one, moving contacting plate matches with two fixed contacts are vertically corresponding respectively.At least two pieces of described permanent magnets are divided into the both sides of the extended line of two fixed contact lines, and the magnetic direction of this permanent magnet is parallel and simultaneously vertical with the sense of current between dynamic and static contact with two fixed contact line directions.

The magnetic direction of permanent magnet is adjusted to parallel with direction, contact by the utility model, when arc blow-out, as state diagram when Fig. 2 .1 is forward current disconnection, wherein, lateral arrows is magnetic direction 11, and vertical arrow is electric arc direction 12 ,+,-be the sense of current 13, now, the electric arc between two fixed contacts pulls open towards both sides under the influence of a magnetic field.When reverse current disconnects, as shown in Fig. 2 .2, the electric arc between two fixed contacts pulls open towards both sides equally,

Direction when just electric arc direction disconnects with forward current is contrary.Because both sides magnetic field intensity is consistent, fixed contact both sides are consistent with ceramic package distance simultaneously, and therefore the forward of electric current cut-offs consistent with reverse break performance, thus realizes the identical object of two-way break performance.In addition, the magnetic field intensity of permanent magnet can be increased, to increase arc blow-out effect simultaneously.

The utility model is also provided with electric arc insulating wall 5 between two fixed contacts, electric arc can be separated completely in interrupting process, reaches better arc blow-out effect.

Contact chamber of the present utility model is that pottery is made, and the cross section of this contact chamber is rectangle, and the width dimension of this contact chamber is greater than the distance between two fixed contacts.If Fig. 3,1 is when contact chamber shell is circular, electric arc is restricted in the space of extending direction, and electric arc, due to the impact by round ceramic shell, is easily formed and crosses, reduce the connecting-disconnecting function of D.C. contactor electric current, and round ceramic shell is not easy to the installation of permanent magnet and fixes.And the utility model is designed to square ceramic shell, as shown in Figure 3 .2, electric arc is consistent in the space of extending direction, and permanent magnet can be close to ceramic package simultaneously, is convenient to install.If Fig. 4 .1 is narrow ceramic package, Fig. 4 .2 is wide type ceramic package, and the utility model, by increasing the lateral dimension of square ceramic shell, strengthens the space of electric arc extending direction, thus is more conducive to cut-offfing of electric arc.

In addition, the diameter connecing moving contacting plate and the width at the quiet contact point place of coupling and be less than described fixed contact described in the utility model, such setting also can improve the connecting-disconnecting function of D.C. contactor.As the moving contacting plate that Fig. 5 .1 is wider, and Fig. 5 .2 is narrower moving contacting plate, and the electric arc in visible Fig. 5 .2 more easily disconnects.

Claims

1. a nonpolarity D.C. contactor, comprise sealed type contact chamber (1) and at least two pieces of permanent magnets (2), described contact chamber movable often starts contact chip (4) built with two fixing fixed contacts (3) and one, this moving contacting plate matches with two fixed contacts are vertically corresponding respectively, it is characterized in that: at least two pieces of described permanent magnets are divided into the both sides of the extended line of two fixed contact lines, and the magnetic direction of this permanent magnet is parallel and simultaneously vertical with the sense of current between dynamic and static contact with two fixed contact line directions.

2. nonpolarity D.C. contactor according to claim 1, is characterized in that: be provided with electric arc insulating wall (5) between described two fixed contacts.

3. nonpolarity D.C. contactor according to claim 1, is characterized in that: described moving contacting plate is less than the diameter of described fixed contact with the width at the fixed contact place of coupling.

4. nonpolarity D.C. contactor according to claim 1, is characterized in that: described contact chamber is that pottery is made, and the cross section of this contact chamber is rectangle, and the width dimension of this contact chamber is greater than the distance between two fixed contacts.