CN204441196U

CN204441196U - Closed type D.C. contactor

Info

Publication number: CN204441196U
Application number: CN201520026004.7U
Authority: CN
Inventors: 刘书章; 马晓龙
Original assignee: TIANSHUI 213 ELECTRICAL APPARATUS Co Ltd
Current assignee: TIANSHUI 213 ELECTRICAL APPARATUS Co Ltd
Priority date: 2015-01-07
Filing date: 2015-01-07
Publication date: 2015-07-01
Anticipated expiration: 2025-01-07

Abstract

The utility model is closed type D.C. contactor, is a kind of appliance switch contactor.Improved the sealing property of product by well-designed hermetically-sealed construction form, thus make product serviceability stable, reliable and there is applicability widely.Closed type D.C. contactor comprises contact system, arc-extinguish chamber, solenoid, armature, static iron core, push rod, base, coil clamper etc., fixed contact and coil clamper are inlayed in the base, base is fixed in the loop sleeve of solenoid, sealing ring is equipped with in centre, and moving contact is fixed on push rod, and armature is contained in solenoid inside and is connected with push rod, arc-extinguish chamber is connected with base, between the two, rubber gasket is housed, with screw, the two is fastenedly connected, realizes the positiver sealing of contact system.The utility model is used for various electric equipment, especially can be used on the equipment of dust is large, water smoke is many adverse circumstances and special purpose.

Description

Closed type D.C. contactor

Technical field

The utility model relates to appliance switch contactor, specifically a kind of closed type D.C. contactor.

Background technology

There are some deadly defects when adverse circumstances and special purpose use in existing D.C. contactor: 1. sealing is poor, and dust, water smoke easily enter main contact system, causes main contact pull-in failure, and cause a series of engineering accident, thus functional reliability is poor; 2. volume is large, installs inconvenience.These drawbacks limit scope of application of existing D.C. contactor, is difficult to the needs adapting to engineering construction.

Summary of the invention

The utility model is overcome the defect that existing D.C. contactor exists, and has designed and developed that a kind of dust-proof grade is high, the little closed type D.C. contactor that can be applicable to adverse circumstances and special purpose of good insulation preformance, volume.

The technical solution of the utility model is as follows: closed type D.C. contactor comprises contact system, arc-extinguish chamber, armature, static iron core, solenoid, base, push rod, coil clamper, described contact system has moving contact and fixed contact, wherein fixed contact and coil clamper are inlayed in the base, base is fixed in the loop sleeve of solenoid, O-ring seals is equipped with in the two contact position, moving contact is fixed on push rod, armature is contained in solenoid inside and is connected with push rod, in solenoid, static iron core is installed in bottom, arc-extinguish chamber is connected with base, Base edge has boss, fluted inside arc-extinguish chamber edge, in the middle of the two, rubber gasket is housed, by be positioned at screw outside rubber gasket by arc-extinguish chamber and base fastening, guarantee the sealing of contact system.

Compare with existing D.C. contactor, the beneficial effects of the utility model are: 1, adopt a molding process planning to inlay in the base by fixed contact and coil clamper, two lead-out wires of coil are each passed through on base and are welded on after preformed hole on coil clamper, and client winding wiring and main contact wiring are all placed in outside die cavity.Therefore compact conformation, volume is little, technique is simple, colleague increase structural strength, not yielding; 2, Base edge has boss to coordinate with arc-extinguish chamber edge inboard groove, and between the two, rubber gasket is housed, and adds screw fastening, substantially increases sealing effectiveness; 3, base and loop sleeve cooperation place are shaped with chamfering, and sealing ring can abutting contact face, adds the screw fastening be placed in outside sealing ring, sealing gasket is full of and closes face, make to have formed totally enclosed inner chamber in coil, strictly prevent water smoke, dust enters in chamber, realize good sealing.Feature in sum, makes this product degree of protection be IP65, prevents dust from entering and any water spray completely, ensures the service behaviour that product is good.

Accompanying drawing explanation

Fig. 1 is closed type D.C. contactor outline drawing

Fig. 2 is A-A cutaway view in Fig. 1

Fig. 3 is B-B cutaway view in Fig. 1

Fig. 4 is C-C cutaway view in Fig. 1

Drawing explanation

In Fig. 2: 1-fixed contact 2-arc-extinguish chamber 3-moving contact 4-push rod 5-touch spring

6-contact liner 7-rubber gasket 8-base 9-O RunddichtringO

10-base plate 11-armature 12-reaction spring 13-solenoid

14-static iron core

In Fig. 3: 1-static iron core 15-coil clamper 16-lead-out wires of coil

17-arc-extinguish chamber hold-down screw

In Fig. 4: 2-arc-extinguish chamber 7-rubber gasket 8-base 9-O RunddichtringO

18-loop sleeve 19-arc-extinguish chamber hold-down screw

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described, as shown in Figure 2, closed type D.C. contactor comprises contact system, arc-extinguish chamber, armature, static iron core, solenoid, coil clamper (shown in Fig. 3), base etc., contact system has moving contact and fixed contact, fixed contact 1 and coil clamper 15 are embedded in base 8, embed wherein while base 8 is shaping, base 8 is fixed in the loop sleeve 18 (shown in Fig. 4) of solenoid 13, the cooperation place of base 8 and loop sleeve 18 is shaped with chamfering respectively, O-ring seals 9 is wherein housed, base 8 and loop sleeve 18 are locked by the outside coil hold-down screw 17 (shown in Fig. 3) of O-ring seals 9, O-ring seals and fillet surface are fitted tightly, solenoid is made to have formed hermetic inner chamber, between base 8 and solenoid, base plate 10 is also housed, moving contact 3 is contained on push rod 4, touch spring 5 and contact liner 6 push rod 4 be equipped with, armature 11 to be contained in solenoid 13 and to be connected with push rod 4, static iron core 14 is set below armature 11, in the centre bore of armature 11 and static iron core 14 correspondence, reaction spring 12 is housed, arc-extinguish chamber 2 arc-extinguish chamber hold-down screw 19 (shown in Fig. 4) is fixed on base 8, edge is shaped with boss to base 8, groove is shaped with inside the edge of arc-extinguish chamber 2, rubber gasket 7 is installed between boss and groove, arc-extinguish chamber hold-down screw 19 is arranged on outside rubber gasket, by fastening to arc-extinguish chamber 2 and base 8, further raising sealing effectiveness.

Two lead-out wires of coil 16 (shown in Fig. 3) of contactor are welded on coil clamper 15 after being each passed through the preformed hole on base 8, and client winding wiring and main contact wiring are all placed on die cavity outside.

Other parts of the present utility model and existing like product similar.

Mechanism action principle of the present utility model is as follows:

1, adhesive action: after solenoid energising, produce electromagnetic force, static iron core 14 attracts armature 11 to move down, push rod 4 is driven to move down and compress reaction spring 12, push rod 4 drives moving contact 3, contact liner 6, touch spring 5 to move down, and after armature 11 and static iron core 14 pole-face are fitted, adhesive action completes, the now contact of moving contact 3 and fixed contact contact, main circuit is connected.

2, release movement: after solenoid 13 power-off, electromagnetic force disappears, under the effect of reaction spring 12 restoring force, armature 11 moves up, push rod 4 is driven to move up, push rod 4 drives moving contact 3, contact liner 6, touch spring 5 to move up, and after armature 11 and base 8 end face are fitted, release movement completes.Now, the contact of moving contact 3 and the contact of fixed contact 1 disconnect, and main circuit disconnects.

Claims

1. a closed type D.C. contactor, comprise contact system, arc-extinguish chamber, armature, static iron core, solenoid, base, push rod, coil clamper, contact system has moving contact (3) and fixed contact (1), it is characterized in that fixed contact (1) and coil clamper (15) are embedded in base (8), base (8) is fixed in the loop sleeve (18) of solenoid (13), O-ring seals (9) is equipped with in the two contact position, moving contact (3) is fixed on push rod (4), armature (11) is contained in the inside of solenoid (13) and is connected with push rod (4), in solenoid, static iron core (14) is installed in bottom, arc-extinguish chamber (2) is connected with base (8), Base edge is shaped with boss, fluted inside arc-extinguish chamber edge, in the middle of the two, rubber gasket (7) is housed, by being positioned at screw outside rubber gasket by fastening to arc-extinguish chamber (2) and base (8), guarantee that contact system seals.

2. contactor according to claim 1, is characterized in that the cooperation place of base (8) and loop sleeve (18) is shaped with chamfering respectively.

3. contactor according to claim 1, is welded on coil clamper (15) after it is characterized in that the preformed hole that two lead-out wires of coil (16) of contactor are each passed through on base (8).