CN2622845Y

CN2622845Y - Arcless pulse low voltage switch

Info

Publication number: CN2622845Y
Application number: CN 03218220
Authority: CN
Inventors: 孙臣志
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-06-13
Filing date: 2003-06-13
Publication date: 2004-06-30
Anticipated expiration: 2013-06-13

Abstract

The utility model relates to an arcless pulse low voltage switch, comprising a base, a main stationary contact terminal seat and a closing cap connected together, wherein, a main stationary contact terminal, a main active contact terminal and an arc-extinguishing chamber are arranged in the internal cavity of the closing cap, the main stationary contact terminal and the arc-extinguishing chamber are fixed on the main stationary contact terminal seat, the main active contact terminal is arranged on the main joystick, the main joystick is overhung into the internal cavity of the base passing through the main stationary contact terminal seat, the overhanging end of the main joystick is arranged on the main support, an armature is arranged on the main support, an induction magnet is fixed in the internal cavity of the base, a pulse coil is arranged on the induction magnet, the armature is near to the pulse coil, insulating oils are arranged in the internal cavity of the arc-extinguishing chamber; the arc-extinguishing chamber is provided with a subsidiary active contact terminal assembly driven by the main joystick and connected with the wall of the arc-extinguishing chamber, and a subsidiary stationary contact terminal assembly forming the electric connection with the main stationary contact terminal and insulating with the wall of the arc-extinguishing chamber. Adopting the arcless pulse low voltage switch, only at the instant of the contact terminal putting through and cutting the load electrical source, the control current flows by the coil, and the arc or arc widening is not produced.

Description

No arc pulse low tension switch

Technical field

The utility model relates to a kind of low tension switch, a kind of no arc pulse low tension switch of more specifically saying so.

Background technology

Unmatched, all low voltage electromagnetic switch, as magnetic starter, A.C. contactor, D.C. contactor etc., its operation principle all is that coil electricity produces induced field, makes the iron core magnetization, drives moving contact and contacts with fixed contact, connects load power source; Work as coil blackout, induced field disappears, and moving contact and fixed contact break away from, and cuts off load power source.This type of electromagnetic switch, simple to operate, safe and reliable, but and remote operation, but its drawback is: 1, in running, have electric current to flow through coil from start to finish, not only waste energy, burn out coil easily, but also produce very big noise, contaminated environment; 2, in the moment that is switched on or switched off power supply, contact can produce electric arc or arcing, not only burns the decorations contact, and shortened the useful life of switch, and initiation fire and blast easily, causes very big threat to safe power supply.

Summary of the invention

The purpose of this utility model only provided in a kind of running in the moment that contact switches on and off power supply just to be had Control current to flow through in the coil and can not produce the no arc pulse low tension switch of electric arc or arcing.

In order to realize above-mentioned purpose, this no arc pulse low tension switch, comprise base, in the linking of the upper end of base main stationary contact headstock is arranged, main stationary contact headstock uplink is connected to seal cover, main fixed contact and active contact are housed in the inner chamber of seal cover, wherein main fixed contact is fixed on the main stationary contact headstock, and constitute with output wiring terminal and to be electrically connected, initiatively contact is contained on the master lever, it is overhanging in the base inner chamber that master lever passes main stationary contact headstock, its overhanging end is contained on the main support, armature is housed on the main support, its design feature is to be fixed with sensor magnet in the inner chamber of base, pulsed coil is housed on the sensor magnet, armature and pulsed coil are close, in the inner chamber of seal cover, also be equipped with and be fixed on the main stationary contact headstock, and constitute the expulsion element is electrically connected with the input wires terminal, and in expulsion element's inner chamber insulating oil is housed, in the expulsion element, be equipped with by master lever and drive and the secondary moving contact assembly that is connected with the blow-out locular wall and constitute the secondary fixed contact assembly that is electrically connected and insulate with the blow-out locular wall with main fixed contact.

Above-mentioned secondary moving contact assembly comprises that two ends pass the overhanging rotating shaft of blow-out locular wall, and rotating shaft is positioned to be equipped with on expulsion element's inner chamber section pays a moving contact, is positioned on overhanging section of two ends the secondary joystick that is connected with master lever respectively is housed; Secondary fixed contact assembly comprises another rotating shaft that is contained on the blow-out locular wall, be contained in this rotating shaft and with the secondary fixed contact of this rotating shaft insulation, secondary fixed contact is supported by the insulator that is fixed on expulsion element's inner bottom surface.

Above-mentioned sensor magnet and armature are to select common straightcarbon steel A3, A4, A5, A6, A7,45 for use ^#A kind of with among carbon tool steel T8, T10, the T12.

Above-mentioned main fixed contact has a perpendicular section, output wiring terminal with should perpendicular section be connected; There is a perpendicular section expulsion element, and the input wires terminal is connected with the end face that should erect section.

Improvement as to this no arc pulse low tension switch is provided with spring pressuring plate on the end face of active contact, be set with stage clip on master lever.

Further improvement as to this no arc pulse low tension switch is provided with terminal box on the two sides of base.

This no arc pulse low tension switch and the special-purpose supporting use of pulse generator, its operation principle is: when adhesive, in pulsed coil, import a pulse current by pulse generator, pulsed coil produces induced field, sensor magnet and armature are placed this induced field, make the magnetization of sensor magnet and armature, attract each other, because sensor magnet is fixed on the base, thereby pulling armature, and by armature drive master lever generation displacement, the displacement of master lever, at first be that the secondary moving contact that drives secondary moving contact assembly contacts with the secondary fixed contact of secondary fixed contact assembly, because this two contact is immersed in fire-retardant, in the insulating oil of insulation, so can not produce electric arc, continuation displacement along with master lever, initiatively contact contacts with main fixed contact, thereby connection load power source, because secondary moving contact contacts with secondary fixed contact in advance, thereby initiatively contact can not produce electric arc with contacting of main fixed contact, because sensor magnet and armature are to select specific material for use, in a single day this specific material is magnetized, and its magnetic will continue to keep, thereby load power source is reliably connected; On the contrary, when disconnecting, only need in pulsed coil, to import a pulsewidth and the equal reverse impulse electric current of pulse amplitude by pulse generator, pulsed coil produces the opposite induced field of direction, with sensor magnet and armature demagnetization, so under the reset response of stage clip, master lever resets, in the process that resets, drive earlier initiatively that contact leaves main fixed contact, also keep in touch because of secondary moving contact and secondary fixed contact this moment, no arcing generation, and then secondary moving contact and the disconnection of secondary fixed contact, cut off load power source, because this two contact is immersed in fire-retardant, in the insulating oil of insulation, the moment of disconnection still can not produce arcing.Because only respectively feed a pulse current when connecting load power source and cutting off load power source in the pulsed coil, remaining period no current flows through, and has not only saved the energy, has prolonged the useful life of pulsed coil, pulse and noiselessness, non-environmental-pollution.

By above narration as can be known, adopt this no arc pulse low tension switch, only just have Control current to flow through in the coil and can not produce electric arc or arcing in the moment that contact switches on and off load power source.

Description of drawings

Embodiment of the present utility model is illustrated in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structural representation of no arc pulse low tension switch;

Fig. 2 is the stereoscopic figure of no arc pulse low tension switch.

Embodiment

With reference to accompanying drawing, no arc pulse low tension switch, comprise base 1, in the linking of the upper end of base 1 main stationary contact headstock 2 is arranged, main stationary contact headstock 2 uplinks are connected to seal cover 3, main fixed contact 20 and active contact 10 are housed in the inner chamber of seal cover 3, wherein main fixed contact 20 is fixed on the main stationary contact headstock 2, and constitute with output wiring terminal 22 and to be electrically connected, on the end face of active contact 10, be provided with spring pressuring plate 12, initiatively contact 10 is contained on the master lever 9, on master lever 9, be set with stage clip 8, it is overhanging in base 1 inner chamber that master lever 9 passes main stationary contact headstock 2, its overhanging end is contained on the main support 7, armature 6 is housed on the main support 7, is fixed with sensor magnet 4 in the inner chamber of base 1, sensor magnet 4 and armature 6 are to select common straightcarbon steel A3 for use, A4, A5, A6, A7,45 ^#With carbon tool steel T8, T10, a kind of among the T12, pulsed coil 5 is housed on the sensor magnet 4, armature 6 is close with pulsed coil 5, the expulsion element 13 that is fixed on the main stationary contact headstock 2 also is housed in the inner chamber of seal cover 3, there is a perpendicular section expulsion element 13, the end face that should erect section is electrically connected with input wires terminal 21 formations, the silicone oil of insulation is housed in expulsion element's 13 inner chambers, in expulsion element 13, be equipped with by master lever 9 and drive and the secondary moving contact assembly that is connected with expulsion element's 13 walls and constitute the secondary fixed contact assembly that is electrically connected and insulate with expulsion element's 13 walls by lead 29 and main fixed contact 20, secondary moving contact assembly comprises that two ends pass the overhanging rotating shaft 30 of expulsion element's 13 walls, rotating shaft 30 is positioned to be equipped with on expulsion element's 13 inner chamber sections pays moving contact 16, be positioned on overhanging section of two ends the secondary joystick 17 that is connected with master lever 9 respectively is housed, secondary fixed contact assembly comprises another rotating shaft 31 that is contained on expulsion element's 13 walls, be contained in this rotating shaft 31 and with the secondary fixed contact 15 of these rotating shaft 31 insulation, secondary fixed contact 15 is supported by the insulator 32 that is fixed on expulsion element's 13 inner bottom surfaces, is provided with

terminal box

23 and 24 on the two sides of base 1.

In the present embodiment,

label

11,14,18 and 19 is respectively the silver-cadmium alloy contact of corresponding component, and

label

25,26 is a hold-down screw, and label 27 is the protecting against shock spring of sensor magnet 4, and label 28 is an installing hole.

Claims

1, a kind of no arc pulse low tension switch, comprise base (1), in the linking of the upper end of base (1) main stationary contact headstock (2) is arranged, main stationary contact headstock (2) uplink is connected to seal cover (3), main fixed contact (20) and active contact (10) are housed in the inner chamber of seal cover (3), wherein main fixed contact (20) is fixed on the main stationary contact headstock (2), and constitute with output wiring terminal (22) and to be electrically connected, initiatively contact (10) is contained on the master lever (9), it is overhanging in base (1) inner chamber that master lever (9) passes main stationary contact headstock (2), its overhanging end is contained on the main support (7), armature (6) is housed on the main support (7), it is characterized in that in the inner chamber of base (1), being fixed with sensor magnet (4), pulsed coil (5) is housed on the sensor magnet (4), armature (6) is close with pulsed coil (5), in the inner chamber of seal cover (3), also be equipped with and be fixed on the main stationary contact headstock (2), and the expulsion element (13) that is electrically connected with input wires terminal (21) formation, in expulsion element (13) inner chamber insulating oil is housed, in expulsion element (13), is equipped with by master lever (9) and drives and the secondary moving contact assembly that is connected with expulsion element (13) wall and constitute the secondary fixed contact assembly that is electrically connected and insulate with expulsion element (13) wall with main fixed contact (20).

2, no arc pulse low tension switch according to claim 1, it is characterized in that secondary moving contact assembly comprises that two ends pass the overhanging rotating shaft (30) of expulsion element (13) wall, rotating shaft (30) is positioned to be equipped with on expulsion element (13) the inner chamber section pays a moving contact (16), is positioned on overhanging section of two ends the secondary joystick (17) that is connected with master lever (9) respectively is housed; Secondary fixed contact assembly comprises another rotating shaft (31) that is contained on expulsion element (13) wall, be contained in that this rotating shaft (31) is gone up and with the secondary fixed contact (15) of this rotating shaft (31) insulation, secondary fixed contact (15) is supported by the insulator (32) that is fixed on expulsion element (13) inner bottom surface.

3, no arc pulse low tension switch according to claim 1 and 2 is characterized in that main fixed contact (20) has a perpendicular section, output wiring terminal (22) with should perpendicular section be connected; There is a perpendicular section expulsion element (13), and input wires terminal (21) is connected with the end face that should erect section.

4, no arc pulse low tension switch according to claim 1 and 2 is characterized in that being provided with spring pressuring plate (12) on the end face of active contact (10), is set with stage clip (8) on master lever (9).

5, no arc pulse low tension switch according to claim 1 and 2 is characterized in that being provided with terminal box (23) and (24) on the two sides of base (1).