CN204011293U

CN204011293U - D.C. contactor auxiliary contact

Info

Publication number: CN204011293U
Application number: CN201420394717.4U
Authority: CN
Inventors: 陈腾腾; 覃奀垚; 余佳; 贾冰冰
Original assignee: KUNSHAN GUOLI VACUUM ELECTRIC CO Ltd
Current assignee: KUNSHAN GUOLI VACUUM ELECTRIC CO Ltd
Priority date: 2014-07-17
Filing date: 2014-07-17
Publication date: 2014-12-10
Anticipated expiration: 2024-07-17

Abstract

The utility model discloses a kind of D.C. contactor auxiliary contact, comprise auxiliary contact, these auxiliary contact comprise tongue tube, permanent magnet, the first pure iron sheet and the second pure iron sheet, and this first and second pure iron sheet is symmetricly set under power transmission shaft, and have gap between this first and second pure iron sheet; This permanent magnet is fixed on the second pure iron sheet, even if power transmission shaft moves downward when the described moving contact in below and fixed contact are off-state this power transmission shaft against this permanent magnet; This tongue tube is arranged at this first and second pure iron sheet one side; In the outer Monday of moving iron core, enclose and be also arranged with pure iron part, this pure iron part upper end extends to described moving iron core outside, and this pure iron part lower end extends on first and second pure iron sheet.This D.C. contactor utilizes magnetic field principle with auxiliary contact, thereby need to greatly not simplify internal structure and the assembling process of product from interiors of products leading-out terminal, and cost is corresponding reduction also.

Description

D.C. contactor auxiliary contact

Technical field

The utility model relates to a kind of D.C. contactor, relates in particular to a kind of D.C. contactor auxiliary contact.

Background technology

At present, on market, existing seal DC contactor is with auxiliary contact, and the disconnection of auxiliary contact or closure and main contacts are consistent, and for judging the state of main contacts, main contacts is to disconnect or closure.These existing auxiliary contact adopt the sound contact chip that auxiliary contact are set at interiors of products, when the mechanism of main contacts partly moves, drive the action of auxiliary contact moving contacting plate simultaneously, thereby the state of auxiliary contact and main contacts is consistent.But the complex structure of this auxiliary contact, has relatively high expectations to the design of product, part processing, finished product assembling process.

Summary of the invention

In order to overcome above-mentioned defect, the utility model provides a kind of D.C. contactor auxiliary contact, adopts magnetic field induction principle to make, and need to, from interiors of products leading-out terminal, greatly not simplify structural design and the product assembling product process of product.

The utility model for the technical scheme that solves its technical problem and adopt is: a kind of D.C. contactor auxiliary contact, comprise for driving the moving contact of the main contacts of this D.C. contactor to move up and down so that the power transmission shaft that the fixed contact of itself and this main contacts switches on and off, and the auxiliary contact consistent with this main contacts motion state; The described power transmission shaft upper end described moving contact that is connected, lower end external stability is arranged with moving iron core; Described auxiliary contact comprise tongue tube, permanent magnet, the first pure iron sheet and the second pure iron sheet, and this first and second pure iron sheet is symmetricly set under described power transmission shaft, and have gap between this first and second pure iron sheet; This permanent magnet is fixed on the second pure iron sheet, even if described power transmission shaft moves downward when the described moving contact in below and fixed contact are off-state this power transmission shaft against this permanent magnet; This tongue tube is arranged at this first and second pure iron sheet one side; In the outer Monday of described moving iron core, enclose and be also arranged with pure iron part, this pure iron part upper end extends to described moving iron core outside, and this pure iron part lower end extends on described first and second pure iron sheet.

As further improvement of the utility model, below described first and second pure iron sheet, be also respectively equipped with for supporting first and second working of plastics of this first and second pure iron sheet.

As further improvement of the utility model, described power transmission shaft movable upper end is sheathed in magnetic pole core, and the part of this power transmission shaft between this magnetic pole core and moving iron core is also provided with back-moving spring outward.

The beneficial effects of the utility model are: these D.C. contactor auxiliary contact, adopt tongue tube, on tongue tube side, place a permanent magnet, use pure iron sheet guiding magnetic circuit guiding, according to pre-designed position, be installed to the main contacts mechanism annex of D.C. contactor, when main contacts mechanism componental movement, the position of moving iron core can change, and then changing original magnetic circuit trend, the state of tongue tube changes thereupon, and then the state of indication main contacts.These auxiliary contact utilize magnetic field principle, thereby need to greatly not simplify internal structure and the assembling process of product from interiors of products leading-out terminal, and cost is corresponding reduction also.

Accompanying drawing explanation

Fig. 1 is auxiliary contact structural representation described in the utility model;

Fig. 2 is auxiliary contact installment state structural representation described in the utility model;

Fig. 3 is the utility model off-state structural representation;

Fig. 4 is the utility model closure state structural representation;

Fig. 5 is the utility model off-state magnetic circuit status architecture schematic diagram;

Fig. 6 is the utility model closure state magnetic circuit status architecture schematic diagram.

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

1---tongue tube 2---permanent magnet

3---first pure iron sheet 4---second pure iron sheet

5---pure iron part

7---first working of plastics 8---second working of plastics

101---fixed contact 102---moving contact

103---power transmission shafts 104---move iron core

105---magnetic pole core 106---back-moving spring

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 of in every case being done with the utility model claim and description changes and modifies, within all still belonging to the utility model patent covering scope.

As shown in Fig. 1-6, a kind of D.C. contactor auxiliary contact, comprise for driving the moving contact 102 of the main contacts of this D.C. contactor to move up and down so that the power transmission shaft 103 that the fixed contact 101 of itself and this main contacts switches on and off, and the auxiliary contact consistent with this main contacts motion state; The power transmission shaft upper end moving contact that is connected, lower end external stability is arranged with moving iron core 104; Auxiliary contact comprise tongue tube 1, permanent magnet 2, the first pure iron sheet 3 and the second pure iron sheet 4, and this first and second pure iron sheet is symmetricly set under described power transmission shaft, and have gap between this first and second pure iron sheet; This permanent magnet is fixed on the second pure iron sheet, even if power transmission shaft moves downward when below moving contact and fixed contact are off-state this power transmission shaft against this permanent magnet; This tongue tube is arranged at this first and second pure iron sheet one side; In the outer Monday of moving iron core, enclose and be also arranged with pure iron part 5, this pure iron part upper end extends to moving iron core outside, and this pure iron part lower end extends on first and second pure iron sheet.

Preferably, below first and second pure iron sheet, be also respectively equipped with for supporting first and second working of plastics 7,8 of this first and second pure iron sheet.

Preferably, power transmission shaft movable upper end is sheathed in magnetic pole core 105, and the part of this power transmission shaft between this magnetic pole core and moving iron core is also provided with back-moving spring 106 outward.

Fig. 1 is auxiliary contact structural representation described in the utility model, and it is by tongue tube, permanent magnet, and first and second pure iron sheet, and first and second working of plastics forms, and permanent magnet is fixed on the second pure iron sheet, and its mounting means is as shown in Figure 2.As shown in Figure 3, under normal condition, main contacts disconnects, and moving iron core is near permanent magnet, and by the magnetic field short circuit of permanent magnet, magnetic field is without tongue tube (as shown in the direction of arrow in Fig. 5), and tongue tube disconnects.As shown in Figure 4, when product energising, moving iron core motion drives power transmission shaft to move upward, the moving contact of main contacts is contacted with fixed contact, and main contacts is closed, now, moving iron core is away from permanent magnet, and magnetic field, through tongue tube (as shown in the direction of arrow in Fig. 6), makes its closure.

Claims

1. D.C. contactor auxiliary contact, comprise that moving contact (102) for driving the main contacts of this D.C. contactor moves up and down so that the power transmission shaft (103) that the fixed contact (101) of itself and this main contacts switches on and off, and the auxiliary contact consistent with this main contacts motion state; The described power transmission shaft upper end described moving contact that is connected, lower end external stability is arranged with moving iron core (104); It is characterized in that: described auxiliary contact comprise tongue tube (1), permanent magnet (2), the first pure iron sheet (3) and the second pure iron sheet (4), this first and second pure iron sheet is symmetricly set under described power transmission shaft, and has gap between this first and second pure iron sheet; This permanent magnet is fixed on the second pure iron sheet, even if described power transmission shaft moves downward when the described moving contact in below and fixed contact are off-state this power transmission shaft against this permanent magnet; This tongue tube is arranged at this first and second pure iron sheet one side; In the outer Monday of described moving iron core, enclose and be also arranged with pure iron part (5), this pure iron part upper end extends to described moving iron core outside, and this pure iron part lower end extends on described first and second pure iron sheet.

2. D.C. contactor auxiliary contact according to claim 1, is characterized in that: below described first and second pure iron sheet, be also respectively equipped with first and second working of plastics (7,8) for supporting this first and second pure iron sheet.

3. D.C. contactor auxiliary contact according to claim 2, it is characterized in that: described power transmission shaft movable upper end is sheathed in magnetic pole core (105), the part of this power transmission shaft between this magnetic pole core and moving iron core is also provided with back-moving spring (106) outward.