CN2566442Y

CN2566442Y - DC contactor

Info

Publication number: CN2566442Y
Application number: CN 02262973
Authority: CN
Inventors: 蔡松泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-08
Filing date: 2002-07-08
Publication date: 2003-08-13
Anticipated expiration: 2012-07-08

Abstract

The utility model relates to a DC contactor, which is an improvement on the basis of the original contactor. A damping ring made from polytetrafluoroethylene is arranged between a movable iron core and a shaft sleeve, and the damping ring and a wire frame are connected into integration so that the installation can be convenient. Simultaneously, the bottom of a movable contact shaft is provided with a movable contact insulating sleeve made from polytetrafluoroethylene materials, and the movable iron core switches on and switches off a control circuit under the electromagnetic effect generated by coils. In the reciprocating motion, the movable iron core does not contact the upper end of the shaft sleeve and the bottom of the movable contact shaft any longer so that the deformation caused by direct impact can be avoided, and therefore, the service life of the utility model can be prolonged. The improved DC contactor can be installed on battery driven vehicles for the operation of starting, speed regulating, lifting and descending.

Description

D.C. contactor

The utility model is the low-voltage direct contactor after a kind of the improvement.

Generally use the action of D.C. contactor control vehicle launch, speed governing, commutation and lifting in the market as the vehicle of power source with storage battery, produce galvanomagnetic effect behind the coil electricity in the D.C. contactor, drive moving iron core and produce thrust, the axially last motion of moving contact that promotion has moving contact contacts with fixed contact, makes the The whole control closing of circuit control the relevant action of vehicle.Coil circuit in cutting off D.C. contactor and lose galvanomagnetic effect, the moving contact that promotes to have moving contact under the effect of reaction spring is motion and promote moving iron core simultaneously and reset down axially, moving contact and fixed contact are disengaged, thereby the The whole control circuit is disconnected.Battery driven vehicle D.C. contactor break-make frequency among specific operation process is higher, thereby axle sleeve upper end and moving contact axle bottom in iron core and the coil holder are constantly bumped, be easy to hacking axle sleeve upper end like this and make moving contact axle deformation of bottom, also be easy to moving iron core stuck behind the hacking of axle sleeve upper end, also be easy to static iron core stuck behind the moving contact axle deformation of bottom, make the D.C. contactor cisco unity malfunction like this, thereby current D.C. contactor exists these defectives.

The purpose of this utility model just is to provide the D.C. contactor after a kind of the improvement, makes phozy and moving contact axle bottom, axle sleeve upper end that deformation not take place, and has improved the life-span that D.C. contactor uses.

The structure of the utility model D.C. contactor is mainly by the electromagnetism adhesive of coil and two most of compositions of quiet, moving contact.

Below in conjunction with accompanying drawing the utility model D.C. contactor is elaborated.

Fig. 1 partly cuts open figure for the utility model D.C. contactor.

The coil of D.C. contactor (3) energising back produces galvanomagnetic effect, make iron core (1) produce thrust upwards to static iron core (7), the moving contact axle (11) that promotion meanwhile has moving contact (9) moves upward, at this moment the elastic force of touch spring (8) and reaction spring (12) produces relative equilibrium, contact with fixed contact (10), make the The whole control closing of circuit, thus actions such as the starting of control vehicle, commutation.When coil (3) cuts off the power supply and lose galvanomagnetic effect, the moving contact axle (11) that has moving contact (9) is moved downward, moving contact (9) disengages with fixed contact (10), and the moving iron core (1) of promotion simultaneously resets, the The whole control circuit is disconnected, thereby stop the rotation of vehicle, actions such as commutation.D.C. contactor after the improvement is finished as follows, between moving iron core (1) and axle sleeve (2), increased a bumper ring (5), for easy for installation, bumper ring (5) and coil holder (4) are combined as a whole, its material selection polytetrafluoroethylene, this material not only has the good insulation performance effect, and shock-resistant, moving like this iron core (1) just not direct collision on the top of axle sleeve (2), thereby the generation of having stopped the hacking phenomenon.Meanwhile a moving contact insulating case (6) has been installed in the bottom of moving contact axle (11), its material also selects for use polytetrafluoroethylene to make, it not only plays electromagnetism adhesive part and quiet, the insulation effect of moving contact part, no longer direct top with moving iron core (1), the bottom of moving contact axle (11) bumps and is out of shape in attracting process simultaneously.Thereby D.C. contactor of forming by coil (3), moving iron core (1), axle sleeve (2), static iron core (7), moving contact axle (11), touch spring (8), moving contact (9), fixed contact (10) and reaction spring (12), its feature has a bumper ring (5) between axle sleeve (2) and moving iron core (1), its bumper ring (5) combines as a whole with coil holder (4).In the bottom of moving contact axle (11) a moving contact insulating case (6) is installed, bumper ring (5) and moving contact insulating case (6) select for use polytetrafluoroethylmaterial material to make, and it has good insulation performance effect and impact resistance.The operating voltage of D.C. contactor is 24 volts, 30 volts, 40 volts, 48 volts, 72 volts, 80 volts and 96 volts, and the rated operational current of its contact is 50 amperes, 100 amperes, 200 amperes and 400 amperes.

The utility model D.C. contactor is to have done improvement on the basis of original contactor, between moving iron core and (1) axle sleeve (2), a bumper ring of being made by polytetrafluoroethylene (5) has been installed, for easy for installation, buffering figure (5) is combined as a whole with coil holder (4), a moving contact insulating case (6) of being made by polytetrafluoroethylmaterial material has been installed in the bottom of moving contact axle (11) simultaneously, moving iron core (1) switches on and off control circuit under the galvanomagnetic effect that coil (3) is produced, moving iron core (1) no longer directly contacts and the distortion that bumps with moving contact axle (11) bottom with axle sleeve (2) upper end in reciprocating motion, thereby has improved useful life.D.C. contactor after the improvement can be installed in does starting, speed governing and descending operation use on the battery driven vehicle, have tangible result of use.

Claims

1. D.C. contactor of forming by coil (3), moving iron core (1), axle sleeve (2), static iron core (7), moving contact axle (11), touch spring (8), moving contact (9), fixed contact (10) and reaction spring (12), its feature has a bumper ring (5) between axle sleeve (2) and moving iron core (1), its bumper ring (5) combines as a whole with coil holder (4).

2. according to the described D.C. contactor of claim 1, its feature is installed a moving contact insulating case (6) in the bottom of moving contact axle (11).

3. according to claim 1 or 2 described D.C. contactors, its feature selects for use polytetrafluoroethylmaterial material to make at bumper ring (5) and moving contact insulating case (6).