CN201081812Y

CN201081812Y - Relay

Info

Publication number: CN201081812Y
Application number: CNU2007201116706U
Authority: CN
Inventors: 林庆付
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-07-06
Filing date: 2007-07-06
Publication date: 2008-07-02
Anticipated expiration: 2017-07-06

Abstract

The utility model relates to a relay, in particular to a relay capable of damping down fire and eliminating noises. The relay comprises an iron core, a coil, a spring, an armature, contacts and a moveable spring plate, etc., wherein the contacts are separated into fixed contacts and movable contacts; the movable contacts are connected with the moveable spring plate; the armature is connected with the moveable spring plate through a push card; the push card is L-shaped and provided with two parallel openings, one fixed opening connected with the armature and one sliding opening in clearance fit with the movable end of the moveable spring plate. The utility model reduces the consumption of the relay when the voltage applied on the coil part reaches 85 to 95 percent of attracting voltage, thereby prolonging the service life of the product; moreover, the disconnection time of the movable contacts and the fixed contacts is shortened, which eliminates the possibility of generating spark and hum noise.

Description

Relay

Technical field

The utility model relates to a kind of relay, especially can quench, eliminate a kind of relay of noise.

Background technology

Relay is a kind of electronic control device, it has control system (claim not only input circuit) and Be Controlled system (but also claiming output loop), usually be applied in the automatic control circuit, it is actually a kind of " automatic switch " that removes to control big electric current with less current.So in circuit, play effects such as automatic adjusting, safeguard protection, change-over circuit.

Electromagnetic type relay generally is made up of iron core, coil, armature, contact reed etc.As long as add certain voltage at the coil two ends, will flow through certain electric current in the coil, thereby generation galvanomagnetic effect, armature will overcome the pulling force of return spring under the effect of electromagnetic attracting force inhales to iron core, thereby drives the moving contact and fixed contact (normally opened contact) adhesive of armature.Behind coil blackout, the suction of electromagnetism also disappears thereupon, and armature will return original position at the reaction force of spring, make 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.

The movable original paper armature and the movable contact spring of conventional AC relay are fixedly not have relative motion by connector, when actual input coil voltage is the operation voltage of 85-95% in start-up course, movable element armature and movable contact spring can be shaken together, obstructed when leading to when understand the contact, how relay can produce sound (hum AC relay characteristic), spark can appear in moving contact and fixed contact, two contact losses rapidly, when input coil voltage reaches adhesive (startup) voltage, moving contact and fixed contact just can not produce spark, hum free yet.When AC relay does not also reach starting resistor, can produce consumption to the contact in this stage, also very serious to the influence of life of product.

Summary of the invention

Obstructed shortcoming when the utility model has solved the prior art repeat circuit and leads to when moving contact occurs with fixed contact when starting provides a kind of a kind of relay that shortens moving contact and fixed contact contact parting time.

The utility model has also solved the shortcoming that can produce spark in the prior art when moving contact contacts with fixed contact owing to vibration and send hum, provides a kind of effective arc control to reduce the relay of hum.

The utility model has also solved in the prior art because the moving contact shortcoming that obstructed generation contact consumes when logical during with fixed contact provides a kind of minimizing armature hesitation distance, eliminates the relay of contact consumption.

Its technical problem that solves the utility model adopts the ground technical scheme to be: a kind of relay, comprise building blocks such as iron core, coil, spring, armature, contact and movable contact spring, the contact is divided into fixed contact and moving contact, the moving contact movable contact spring of ining succession is characterized in that linking to each other by push card between described armature and the movable contact spring; Push card is the L type, and is provided with 2 open parallel, a fixing port that links to each other with armature, and a slip mouth that links to each other with the movable contact spring movable end, the slip mouth is that activity is connected with the movable end of movable contact spring.When the movable end with movable contact spring of sliding mouthful rotates armature for activity is connected under the effect of relay contained spring, the push card that is connected with armature moves simultaneously, can not produce active force to movable contact spring, moving contact and fixed contact can also be engaged well, have only armature to turn an angle, when push card directly contacts with movable contact spring, distance between armature and the iron core very near the time, phenomenon just can take place to disconnect with fixed contact in moving contact, the time that this moment, the contact consumed is short, has eliminated the generation of flashing and hum.

The width that slides mouthful is greater than the width of fixing port, the fixing port inwall be provided with wedge block and with armature for fixedlying connected.The width that slides mouthful makes the movable end of movable contact spring can not contact with push card when normal condition greater than the width of fixing port, can make moving contact and fixed contact long turn-on time, when the drive push card moves when armature rotates, and moving contact and fixed contact continuation connection.

Push card links to each other and partly links to each other with the magnetic circuit of spring with relay inside at fixing port with armature.

Movable contact spring adopts rivet to link to each other with moving contact, static contact spring piece with fixed contact.

The beneficial effects of the utility model are: lowered when the voltage that be added in the circle part reaches the 85-95% of pick-up voltage the consumption to relay, increased life of product, the time that moving contact and fixed contact are thrown off shortens, and has eliminated the possibility that produces spark and hum.

Description of drawings

Fig. 1 is a kind of structural representation of the utility model;

Fig. 2 is the structural representation of a kind of push card of the utility model;

Fig. 3 is the vertical view of a kind of push card of the utility model;

Fig. 4 is a kind of middle action schematic diagram of the present utility model;

Fig. 5 is a kind of release schematic diagram of the present utility model;

Among the figure: 1, magnetic circuit part, 2, push card, 3, armature, 4, spring, 5, movable contact spring, 6, moving contact, 7, static contact spring piece, 8, fixed contact, 9, slide mouthful, 10, fixing port, 11, wedge block.

Embodiment

Below by specific embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.

Embodiment: relay (referring to accompanying drawing 1) model is JT8565, be provided with magnetic circuit part 1 in the base of box-like, the next door of magnetic circuit part is provided with rotating armature 3, armature is sickleshaped, armature partly links to each other by spring 4 with magnetic circuit, also be fixed with 2 static contact spring pieces 7 on the base, be fixed with fixed contact 8 on its total static contact spring piece, another static contact spring piece is fixed with movable contact spring 5, the position that the movable end of movable contact spring is relative with fixed contact is provided with moving contact 6, link to each other by (referring to accompanying drawing 2 accompanying drawings 3) by push card 2 between the movable end of movable contact spring and the armature, push card is the L type, and is provided with 2 open parallel, a fixing port 10 that is fixedly linked with armature, a slip mouth 9 that matches with the movable contact spring movable end, the movable end of movable contact spring are inserted in the slip mouth of push card, and the fixing port and mouthful inwall that slides are provided with wedge block 11.

Initial state moving contact contact with fixed contact (referring to accompanying drawing 1), in start-up course, armature, push card directly do not contact with movable contact spring, rotation along with armature, when directly contacting with movable contact spring to push card, the distance between armature and the iron core (referring to accompanying drawing 4) is very near, rotates armature again, push card drives movable contact spring, makes moving contact and fixed contact separate (referring to accompanying drawing 5).

Claims

1. a relay comprises building blocks such as iron core, coil, armature, contact and movable contact spring, and the contact is divided into fixed contact and moving contact, and the moving contact movable contact spring of ining succession is characterized in that linking to each other by push card (2) between described armature (3) and the movable contact spring (5); Push card is the L type, and is provided with 2 open parallel, a fixing port that links to each other with armature (10), and a slip mouth (9) that links to each other with the movable contact spring movable end, the slip mouth is that activity is connected with the movable end of movable contact spring.

2. relay according to claim 1 is characterized in that the width of the described width that slides mouthful greater than fixing port, the fixing port inwall be provided with wedge block (11) and with armature for fixedlying connected.