CN204289272U - Contactor - Google Patents

Abstract

A kind of contactor, belong to a kind of switch, comprise base, First Line ring support, first coil, electromagnetically plywood, fixed head, two fixed contact mount pads, two junction blocks and two moving contact mount pads, each fixed contact mount pad is all connected with a fixed contact, each moving contact mount pad is all connected with an elastic plate, each elastic plate is all connected with a moving contact, wherein, the middle part of fixed contact is connected with the second coil holder, the second coil is provided with in second coil holder, second hub of a spool is inserted with iron core, the left side of the second coil holder is connected with run-on tab, each moving contact is all connected with fin, moving contact mount pad is connected with screw rod, screw rod upper end is rotary with adjusting nut, on screw rod, cover has regulating spring, the two ends up and down of regulating spring withstand on adjusting nut and elastic plate respectively.The utility model has that arc quenching effect is good, moving contact is not easily burned, moving contact contacts with fixed contact well, the advantage of long service life.

Description

Contactor

Technical field:

The utility model relates to a kind of switch, is specifically a kind of contactor.

Background technology:

Contactor is used to the electrical equipment switching on and off alternating current-direct current main circuit and Large Copacity control electric current at a distance continually, have be swift in motion, control capability is large, safe and convenient to use, can the advantage such as frequent operation and remote operation, be mainly used to switch on and off load current.Because the moving contact in contactor and fixed contact are when being contacting and separating, usually electric arc can be produced between moving contact and fixed contact, and electric arc not only can affect the sensitivity of contactor, and the high temperature that produces of electric arc also may burn out the moving contact of contactor, contactor even can be caused time serious to explode, therefore, current contactor is mostly provided with arc-extinguish chamber and is used for arc extinguishing, but we find in actual application, when load current is larger, the arc quenching effect of arc-extinguish chamber is unsatisfactory, the situation that the moving contact of contactor burns out still can often occur, this obviously have impact on the normal service life of contactor greatly, again because the moving contact in common contactor is connected on moving contact mount pad by elastic plate, when moving contact in contactor contacts with fixed contact, moving contact relies on the elastic force of elastic plate to be pressed on fixed contact, after moving contact and fixed contact multiple-contact, the elastic force of elastic plate can weaken gradually, usually can there is the situation of moving contact and fixed contact loose contact like this, also can affect the useful life of contactor.

Utility model content:

The technical problems to be solved in the utility model is, provides that a kind of arc quenching effect is good, moving contact is not easily burned, moving contact contacts with fixed contact well, the contactor of long service life.

Technical solution of the present utility model is, a kind of contactor is provided, comprise base, First Line ring support, first coil, electromagnetically plywood, fixed head, two fixed contact mount pads, two junction blocks and two moving contact mount pads, First Line ring support is connected on base, first coil is connected on First Line ring support, fixed head is connected on First Line ring support, electromagnetically plywood is positioned at above the first coil, electromagnetically the right-hand member of plywood to be inserted on fixed head and electromagnetically the right-hand member of plywood is connected with base by tension spring, two fixed contact mount pads are all connected to the left end of First Line ring support, two junction blocks are connected on fixed head, two moving contact mount pads are connected to the left part of electromagnetically plywood, each fixed contact mount pad is all connected with a fixed contact, each junction block is all connected with a terminal block, each moving contact mount pad is all connected with an elastic plate, each elastic plate is all connected with a moving contact, two moving contacts lay respectively at directly over corresponding fixed contact, two elastic plates are all electrically connected with corresponding terminal block by soft line, the both sides of each fixed contact mount pad are all connected with arc-extinguish chamber mounting panel, arc-extinguish chamber is equipped with between the arc-extinguish chamber mounting panel of the both sides of each fixed contact mount pad, each arc-extinguish chamber is all connected with corresponding terminal block by connecting plate, wherein, the two ends up and down of fixed contact bend all left, the middle part of fixed contact is connected with the second coil holder, in space between the two ends that second coil holder bends left on fixed contact, the second coil is provided with in second coil holder, the coil two ends of the second coil are separately fixed at the right and left of the second coil holder bottom, second hub of a spool is inserted with iron core, the left side of the second coil holder is connected with run-on tab, the upper end of run-on tab bends to the right and the upper end of close fixed contact, the lower end of run-on tab bends left, each moving contact is all connected with fin, the left part of fin upwards arches upward, heat dissipation channel is formed between the left part of fin and moving contact, the right-hand member of elastic plate is connected on moving contact mount pad, the middle part of elastic plate is provided with through hole, moving contact mount pad is connected with screw rod, screw rod is inserted in through hole, screw rod upper end is rotary with adjusting nut, on screw rod, cover has regulating spring, the two ends up and down of regulating spring withstand on adjusting nut and elastic plate respectively.

After adopting above structure, compared with prior art, the utility model contactor has the following advantages: the middle part due to fixed contact is connected with the second coil holder, the second coil is provided with in second coil holder, the coil two ends of the second coil are separately fixed at the right and left of the second coil holder bottom, second hub of a spool is inserted with iron core, the left side of the second coil holder is connected with run-on tab, the upper end of run-on tab bends to the right and the upper end of close fixed contact, therefore, when moving contact and fixed contact are when being contacting and separating, the electric arc produced between moving contact and fixed contact enters the second coil by run-on tab, second coil produces magnetic field by electromagnetic induction, second coil is elongated electric arc by the magnetic force of itself, allow its automatic distinguishing, play the effect of arc extinguishing, due to each moving contact being all connected with fin, the left part of fin upwards arches upward, and forms heat dissipation channel between the left part of fin and moving contact, and therefore, fin and heat dissipation channel can make moving contact play the effect of quick heat radiating, prevent moving contact to be burned, again because the right-hand member of elastic plate is connected on moving contact mount pad, the middle part of elastic plate is provided with through hole, moving contact mount pad is connected with screw rod, screw rod is inserted in through hole, screw rod upper end is rotary with adjusting nut, on screw rod, cover has regulating spring, the two ends up and down of regulating spring withstand on adjusting nut and elastic plate respectively, therefore, when there is the situation of loose contact in moving contact and fixed contact, at this moment can regulate the pressure of regulating spring by screwing adjusting nut, ensureing that, when moving contact contacts with fixed contact, moving contact can be pressed on fixed contact.In sum, the utility model contactor not only has arc-extinguish chamber and carries out arc extinguishing, also there is the second coil and carry out arc extinguishing, and there is the function of fin to moving contact quick heat radiating, and can ensure when moving contact contacts with fixed contact, moving contact can be pressed on fixed contact, and therefore, the utility model contactor has that arc quenching effect is good, moving contact is not easily burned, moving contact contacts with fixed contact well, the advantage of long service life.

Accompanying drawing illustrates:

Fig. 1 is the perspective view of the utility model contactor;

Fig. 2 is the perspective view of the utility model contactor when removing arc-extinguish chamber and arc-extinguish chamber mounting panel;

Fig. 3 is the main TV structure schematic diagram of Fig. 2;

Fig. 4 is the perspective view removing adjusting nut and regulating spring in Fig. 2.

Embodiment:

Below in conjunction with the drawings and specific embodiments, the utility model contactor is described further:

As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, the utility model contactor comprises base 1, First Line ring support 2, first coil 3, electromagnetically plywood 4, fixed head 6, two fixed contact mount pads 19, two junction blocks 7 and two moving contact mount pads 5, First Line ring support 2 is connected on base 1, first coil 3 is connected on First Line ring support 2, fixed head 6 is connected on First Line ring support 2, electromagnetically plywood 4 is positioned at above the first coil 3, electromagnetically the right-hand member of plywood 4 to be inserted on fixed head 6 and electromagnetically the right-hand member of plywood 4 is connected with base 1 by tension spring 20, two fixed contact mount pads 19 are all connected to the left end of First Line ring support 2, two junction blocks 7 are connected on fixed head 6, two moving contact mount pads 5 are connected to the left part of electromagnetically plywood 4, each fixed contact mount pad 19 is all connected with a fixed contact 12, each junction block 7 is all connected with a terminal block 8, each moving contact mount pad 5 is all connected with an elastic plate 14, each elastic plate 14 is all connected with a moving contact 15, two moving contacts 15 lay respectively at directly over corresponding fixed contact 12, two elastic plates 14 are all electrically connected with corresponding terminal block 8 by soft line 13, the both sides of each fixed contact mount pad 19 are all connected with arc-extinguish chamber mounting panel 11, arc-extinguish chamber 10 is equipped with between the arc-extinguish chamber mounting panel 11 of the both sides of each fixed contact mount pad 19, each arc-extinguish chamber 10 is all connected with corresponding terminal block 8 by connecting plate 9, the two ends up and down of fixed contact 12 bend all left, the middle part of fixed contact 12 is connected with the second coil holder 17, in space between the two ends that second coil holder 17 bends left on fixed contact 12, the second coil 21 is provided with in second coil holder 17, the coil two ends of the second coil 21 are separately fixed at the right and left of the second coil holder 17 bottom, second coil 21 center is inserted with iron core 16, the left side of the second coil holder 17 is connected with run-on tab 18, the upper end of run-on tab 18 bends to the right and the upper end of close fixed contact 12, the lower end of run-on tab 18 bends left, each moving contact 15 is all connected with fin 22, the left part of fin 22 upwards arches upward, heat dissipation channel 23 is formed between the left part of fin 22 and moving contact 15, the right-hand member of elastic plate 14 is connected on moving contact mount pad 5, the middle part of elastic plate 14 is provided with through hole 24, moving contact mount pad 5 is connected with screw rod 25, screw rod 25 is inserted in through hole 24, screw rod 25 upper end is rotary with adjusting nut 26, on screw rod 25, cover has regulating spring 27, the two ends up and down of regulating spring 27 withstand on adjusting nut 26 and elastic plate 14 respectively.

Above-described specific embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.

Claims (1)

1. a contactor, comprise base (1), First Line ring support (2), first coil (3), electromagnetically plywood (4), fixed head (6), two fixed contact mount pads (19), two junction blocks (7) and two moving contact mount pads (5), described First Line ring support (2) is connected on base (1), described first coil (3) is connected on First Line ring support (2), described fixed head (6) is connected on First Line ring support (2), described electromagnetically plywood (4) is positioned at above the first coil (3), the right-hand member of described electromagnetically plywood (4) is inserted in the upper and right-hand member that is electromagnetically plywood (4) of fixed head (6) and is connected with base (1) by tension spring (20), described two fixed contact mount pads (19) are all connected to the left end of First Line ring support (2), described two junction blocks (7) are connected on fixed head (6), described two moving contact mount pads (5) are connected to the left part of electromagnetically plywood (4), described each fixed contact mount pad (19) is all connected with a fixed contact (12), described each junction block (7) is all connected with a terminal block (8), described each moving contact mount pad (5) is all connected with an elastic plate (14), described each elastic plate (14) is all connected with a moving contact (15), described two moving contacts (15) lay respectively at directly over corresponding fixed contact (12), the right-hand member of described two elastic plates (14) is all electrically connected with corresponding terminal block (8) by soft line (13), the both sides of described each fixed contact mount pad (19) are all connected with arc-extinguish chamber mounting panel (11), arc-extinguish chamber (10) is equipped with between the arc-extinguish chamber mounting panel (11) of the both sides of described each fixed contact mount pad (19), described each arc-extinguish chamber (10) is all connected with corresponding terminal block (8) by connecting plate (9), it is characterized in that: the two ends up and down of described fixed contact (12) bend all left, the middle part of described fixed contact (12) is connected with the second coil holder (17), described second coil holder (17) is positioned at the space between two ends that fixed contact (12) bends left, the second coil (21) is provided with in described second coil holder (17), the coil two ends of described second coil (21) are separately fixed at the right and left of the second coil holder (17) bottom, described second coil (21) center is inserted with iron core (16), the left side of described second coil holder (17) is connected with run-on tab (18), the upper end of described run-on tab (18) bends to the right and the upper end of close fixed contact (12), the lower end of described run-on tab (18) bends left, described each moving contact (15) is all connected with fin (22), the left part of described fin (22) upwards arches upward, heat dissipation channel (23) is formed between the left part of described fin (22) and moving contact (15), the right-hand member of described elastic plate (14) is connected on moving contact mount pad (5), the middle part of described elastic plate (14) is provided with through hole (24), described moving contact mount pad (5) is connected with screw rod (25), described screw rod (25) is inserted in through hole (24), described screw rod (25) upper end is rotary with adjusting nut (26), the upper cover of described screw rod (25) has regulating spring (27), the two ends up and down of described regulating spring (27) withstand on adjusting nut (26) and elastic plate (14) respectively.