CN2042242U

CN2042242U - Reversible ac contactor

Info

Publication number: CN2042242U
Application number: CN 88217417
Authority: CN
Inventors: 李剑华
Original assignee: SHANGHAI NO 1 SWITCH FACTORY
Current assignee: SHANGHAI NO 1 SWITCH FACTORY
Priority date: 1988-08-10
Filing date: 1988-08-10
Publication date: 1989-08-02

Abstract

The utility model discloses a reversible AC contactor and belongs to the low-voltage electrical field. The utility model makes two sets of respectively independent contact systems 2 and electromagnetic systems 7, 8, 9.) be simultaneously positioned in a base (1). A lever rod type interlocking piece (4) with a supporting point arranged in the middle part of the base (1) is used to combine the contact systems 2 and electromagnetic systems 7, 8, 9.) together. The middle part of the lever rod type interlocking piece (4) is convex. The mechanics and electrical interlocking action can be achieved and the utility model is caused to became the reversible AC contactor.

Description

Reversible AC contactor

The utility model belongs to the low-voltage electrical apparatus field.

The present interchange directional contactor that adopts is loaded onto a mechanical interlocks or electric interlocking installation realization by adding two mutual independently A.C. contactors outsides, and domestic low capacity contactor below 10 amperes can't the additional mechanical interlock, jumboly also to carry out special processing, therefore not only structure becomes complicated to whole interchange directional contactor, volume increases, shared space is increased, and install and use inconvenience, manufacturing cost is also big, because it is mechanism is contained in the outside, also not too safe and reliable during action again.

The purpose of this utility model solves the existing problem of above-mentioned interchange directional contactor with regard to being, and has developed the novel interchange directional contactor of structure.

The utility model is achieved in that promptly a base interior installs two groups of independently contact system and electromagnetic systems separately simultaneously, and by the interlocking device of inside they is combined.In course of action, when one group of contact system after carrying out closure under the electromagnetic system effect because the effect of interlocking device, and make another group contact system be in open position, thereby played the effect of directional contactor.

Below in conjunction with a description of drawings embodiment of the present utility model, promptly the NARI-5A type exchanges directional contactor.

Fig. 1 exchanges the structure chart of directional contactor for NAR1-5A.

Fig. 2,3,4, exchange the schematic diagram of movements of reversible contact for NARI-5A.

This exchanges reversible contact by two groups of electromagnetic systems (upper core 7, lower core 8 and coil 9) independently separately, two groups of contact systems 2 independently separately, retracting spring 6, contact supports 5, terminal block 1, parts such as locking part 4 and dividing plate 10, base plate 13, pedestal 12 are formed.

Earlier terminal block 1 is contained in a side in the pedestal 12 with screw, then two groups of contact systems 2 are installed in pedestal 12 internal upper part the right and lefts, the following upper core 7 that connects two groups of electromagnetic systems respectively of contact support 5, the lever-type locking part 4 that fulcrum is protruded and has at the middle part is installed in two groups of contact systems 2 again, adopt garden pin 3 to form fulcrum in the present embodiment, two ends of locking part 4 insert in the groove of contact support 5, then the bottom the right and left in pedestal 12 is installed coil 9 and lower core 8 corresponding to the position of upper core 7, and at two coils, 9 middle dividing plate 10 and the holddown springs 11 placed, make dividing plate 10 push down the middle projection of locking part 4 just at the right time, thereby it is opposite up and down that locking part 4 two ends can be done in the groove of contact support 5, at last base plate 13 and pedestal 12 tightened together.

The operation principle of this interchange directional contactor: according to extraneous input signal (by coil 9), upper core 7 is by adhesive, support 5 to drive the dynamic and static contact closure in the contact system 2 with the contact that upper core connects together, main circuit is switched on, and this moment, circuit was also connected; Lose when electromagnetic system is excitatory, electromagnetic force is less than the counter-force of spring 6, and upper core 7 sets back, and dynamic and static contact disconnects, circuit disjunction this moment.

In the action, when the one group of contact closure in the right, because the effect of locking part 4, the one group of contact in the left side can only be in open position, thereby has guaranteed the reliability of two groups of contact system action interlockings, has played reversible action.

The interchange directional contactor that the utility model is designed, its overall dimension is 72 * 72 * 72 millimeters, and two CJ10-5A contactors with capacity, its outside does not add any attachment device, overall dimension is 56 * 112 * 68 millimeters, as seen the original volume-diminished of newly-designed ratio, corresponding erection space is also little; Owing to, not only saved materials, reduce cost again, and reduce installation time, install and use and keep in repair more convenient with a pedestal; Again because of locking part 4 in inside, guaranteed the reliable of action.Through verification experimental verification, NAR1 exchanges technical performance index being greatly improved than CJ10 of directional contactor, the NARI-5A.10A type exchanges directional contactor and reaches 6,000,000 times mechanical endurance, electric life reaches when AC-3 1,000,000 times, reach product technology performance conformance with standard GB1497-85 and international standard IEC158-1.1, A-1, B-1, C(1970-1983 during AC-4 40,000 times) regulation; Old CJ10-5A.10A type A.C. contactor has only 3,000,000 times mechanical endurance, is 600,000 times during electric life AC-3, the regulation of product technology performance conformance with standard JB2455-78; This shows that benefit of the present utility model is significant.This structure all is suitable for the interchange directional contactor below the 20A.

Claims

1, exchanges directional contactor, it include two groups separately independently two groups of electromagnetic systems (upper core 7, lower core 8 and coil 9) independently contact system 2, retracting spring 6, contact support 5, terminal block 1, base plate 13, it is characterized in that it also includes the middle lever locking part 4 that has fulcrum, pushes down dividing plate 10 and pedestal 12 of locking part.