CN200986895Y

CN200986895Y - Electromagnetic start relay

Info

Publication number: CN200986895Y
Application number: CN 200620140082
Authority: CN
Inventors: 曾步进
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-15
Filing date: 2006-11-15
Publication date: 2007-12-05
Anticipated expiration: 2016-11-15

Abstract

The utility model discloses an improved technology for an electromagnetic starting relay, and is characterized in that an auxiliary coil (14) and an open-close device are arranged in the shell; the main coil (14) connects in series with an auxiliary coil (13) and parallel connects with the open-close device. Since an auxiliary coil having different resistance is added to the original relay main coil in the utility, and the main coil connects in parallel with the auxiliary coil through the operation of the open-close device, the resistance of the circuit increases, the current for maintaining the attracting decreases, and consequently the heat is effectively reduced; the relay works in a relative low temperature, and the problem that the insulating layer melting and the relay damages cause by the coil temperature rise is solved.

Description

The electromagnetic type starter relay

Technical field: the utility model relates to a kind of improvement invention of electromagnetic type relay.

Background technology: electromagnetic type relay generally is made up of iron core, coil, active contact, contact reed etc.As long as add certain voltage at the coil two ends, will flow through certain electric current in the coil, inhale to iron core thereby generation galvanomagnetic effect, active contact will overcome the pulling force of return spring under the effect of electromagnetic attracting force, thereby drive the initiatively moving contact and fixed contact (normally opened contact) adhesive of contact.Behind coil blackout, the suction of electromagnetism also disappears thereupon, and initiatively contact will return original position at the reaction force of spring, makes moving contact and original fixed contact (normally-closed contact) adhesive.Adhesive like this, release, thus reached the conducting in circuit, the purpose of cut-out.For " often open, normally closed " contact of relay, can distinguish like this: be in the fixed contact of off-state when relay coil is not switched on, be called " normally opened contact "; The fixed contact that is in on-state is called " normally-closed contact ".The relay of this kind structure but owing to have only a coil can heating in the coil galvanization, and in the use, coil temperature raises, and just easily the magnet wire insulation of coil is dissolved, and relay power can occur and but not work or cause whole relay damaged.

Summary of the invention: in view of the technical problem of present known existence, the utility model is exactly for the technical problem that solves is for a kind of coil heating that in use reduces is provided, effectively the electromagnetic type relay of protection insulation.In order to solve the problems of the technologies described above, the utility model adopts following technical scheme to realize: this kind electromagnetic type starter relay, the static contact that includes housing, iron core, main coil, is installed in the active contact on the iron core and matches with the active contact, be equipped with the contact on described active contact and the static contact, the two ends of described coil connect the power input binding post respectively, it is characterized in that also being provided with in the described housing ancillary coil and closing device, described main coil and ancillary coil series connection, described ancillary coil and closing device parallel connection.

The resistance of described main coil is less than the resistance of ancillary coil.

Described closing device is by the bakelite installing rack in: the housing, the contact that is installed in the plastics pressure head on the iron core and is arranged on the installing rack is formed, described contact is by cooperatively interacting and the movable contact spring and the fixed touching plate of contact-carrying are constituted, the afterbody of described main coil and ancillary coil is connected on the movable contact spring simultaneously, the head of described main coil is connected with fixed touching plate, described fixed touching plate is connected with first binding post of power input, the head of described ancillary coil is connected with second binding post of power input, described plastics pressure head is located by pilot pin, the head control movable contact spring and the fixed touching plate of described plastics pressure head disconnect, and described movable contact spring makes ancillary coil connect with main coil with the fixed touching plate disconnection and forms the subsidiary loop of starter relay.Be provided with a copper pipe in the described relay housing, main coil and ancillary coil install around jointly on copper pipe, the two ends of copper pipe are equipped with epoxy plate, and described epoxy plate is installed on the bakelite installing rack by mounting panel, and the hollow part that described iron core passes copper pipe forms movable the cooperation.

Described bakelite installing rack, fixed contact are cast in input binding post consubstantiality and constitute a community.The utility model is owing to increased the ancillary coil of different resistances again in original relay main coil, by the closing device action main coil is connected with ancillary coil, also just increased circuitous resistance, the electric current of keeping adhesive is reduced, so just reduced caloric value effectively, made relay in use be in lower temperature, solved because coil temperature raises, insulation is dissolved, and the thing of damaging relay takes place.

Description of drawings: the utility model has following accompanying drawing:

Fig. 1 is a structure vertical view of the present utility model;

Fig. 2 is a structural front view of the present utility model;

Fig. 3 is a circuit diagram of the present utility model.

Embodiment: accompanying drawing has been represented structure of the present utility model and embodiment, further describes each relevant details and operation principle of embodiment below more in conjunction with the accompanying drawings.This kind electromagnetic type starter relay, the static contact 7 that include housing, iron core 5, main coil 14, copper pipe 11, ancillary coil 13, closing device, is installed in the active contact 2 on the iron core 5 and matches with active contact 2, main coil 14 and ancillary coil 13 install around jointly on copper pipe 11, the two ends of copper pipe 11 are equipped with epoxy plate 12, described epoxy plate 12 is installed on the bakelite installing rack 1 by mounting panel 15, and the hollow part that described iron core 5 passes copper pipe 11 forms movable the cooperation.Described main coil 14 is an interior loop, and ancillary coil 13 is an exterior loop, and the copper wire cross section of described interior loop 13 is less than the copper wire cross section of ancillary coil 13, so the resistance of main coil 14 is less than the resistance of ancillary coil 13.Be equipped with the contact on described active contact 2 and the static contact 7, the two ends of described main coil 14 connect first, second binding post 19,9 of power input respectively, described main coil 14 and ancillary coil 13 series connection, described ancillary coil 13 and closing device parallel connection.Described closing device is by the bakelite installing rack 1 in: the housing, the contact that is installed in the plastics pressure head 4 on the iron core 5 and is arranged on the installing rack 1 is formed, described contact is by cooperatively interacting and the movable contact spring 6 of contact-carrying is constituted with fixed touching plate 8, described main coil 14 is connected with movable contact spring 6 with the afterbody of ancillary coil 13 simultaneously, the head of described main coil 14 is connected with fixed touching plate 8, described fixed touching plate 8 is connected with first binding post 9 of power input, the head of described ancillary coil 13 is connected with second binding post 10 of power input, described plastics pressure head 4 is by pilot pin 3 location, the head control movable contact spring 6 and the fixed touching plate 8 of described plastics pressure head 4 disconnect, and described movable contact spring 6 makes ancillary coil 13 connect with main coil 14 with fixed touching plate 8 disconnections and forms the subsidiary loop of starter relay.Described bakelite installing rack 1, fixed contact 7 are cast in

input binding post

9,10 consubstantialities and constitute a community, can prevent effectively that liquid from infiltrating, and influence the conductive effect of contact.

Because starter relay of the present utility model has been introduced the coil of two different resistances, during starting, energized, because main coil 14 is different with the resistance of ancillary coil 13, ancillary coil 13 resistance are big, electric current can be ignored, at this moment have only main coil 14 to devote oneself to work, because the main coil resistance is less, starting current is big, and being swift in motion of pull-core 5 is strong, can make active contact 2 upper contacts and static contact 7 rapid closings of main circuit, the main circuit energising, iron core 5 actions simultaneously can drive plastics pressure head 4 and depress movable contact spring, and the connection between movable contact spring 6 and the fixed touching plate 8 is disconnected, so ancillary coil 13 forms with main coil 14 and connects and work simultaneously, this has just increased circuitous resistance, and the electric current of keeping adhesive is reduced, and has so just reduced caloric value effectively, make relay in use be in lower temperature, solved because coil temperature raises, insulation is dissolved, the thing of damaging relay takes place.

Claims

1, a kind of electromagnetic type starter relay, the static contact (7) that includes housing, iron core (5), main coil (14), is installed in the active contact (2) on the iron core (5) and matches with active contact (2), be equipped with the contact on described active contact (2) and the static contact (7), the two ends of described main coil (14) connect the power input binding post respectively, it is characterized in that also being provided with in the described housing ancillary coil (14) and closing device, described main coil (14) and ancillary coil (13) series connection, described ancillary coil (14) and closing device parallel connection.

2, a kind of electromagnetic type starter relay as claimed in claim 1 is characterized in that the resistance of the resistance of described main coil (14) less than ancillary coil (13).

3, a kind of electromagnetic type starter relay as claimed in claim 1, it is characterized in that described closing device is by the bakelite installing rack (1) in: the housing, the contact that is installed in the plastics pressure head (4) on the iron core (5) and is arranged on the installing rack (1) is formed, described contact is by cooperatively interacting and the movable contact spring (6) of contact-carrying is constituted with fixed touching plate (8), described main coil (14) is connected on the movable contact spring (6) simultaneously with the afterbody of ancillary coil (13), the head of described main coil (14) is connected with fixed touching plate (8), described fixed touching plate (8) is connected with first binding post (9) of power input, the head of described ancillary coil (13) is connected with second binding post (10) of power input, described plastics pressure head (4) is by pilot pin (3) location, the head control movable contact spring (6) of described plastics pressure head (4) disconnects with fixed touching plate (8), and described movable contact spring (6) makes ancillary coil (13) connect with main coil (14) with fixed touching plate (8) disconnection and forms the subsidiary loop of starter relay.

4, a kind of electromagnetic type starter relay as claimed in claim 1, it is characterized in that being provided with in the described relay housing copper pipe (11), main coil (14) and ancillary coil (13) install around jointly on copper pipe (11), the two ends of copper pipe are equipped with epoxy plate (12), described epoxy plate (12) is installed on the bakelite installing rack (1) by mounting panel (15), and the hollow part that described iron core (5) passes copper pipe (11) forms movable the cooperation.

5, a kind of electromagnetic type starter relay as claimed in claim 3 is characterized in that described bakelite installing rack (1), fixed contact (7) are cast in first, second binding post of input (9), (10) consubstantiality and constitutes a community.