CN2250574Y

CN2250574Y - Single phase ac contactor

Info

Publication number: CN2250574Y
Application number: CN 95232210
Authority: CN
Inventors: 熊华玉; 杨笑明; 杨青
Original assignee: SHENYANG 213 MACHINE TOOL ELECTRIC FACTORY
Current assignee: SHENYANG 213 MACHINE TOOL ELECTRIC FACTORY
Priority date: 1995-09-14
Filing date: 1995-09-14
Publication date: 1997-03-26
Anticipated expiration: 2005-09-14

Abstract

The utility model relates to a single-phase AC contactor comprising a susceptor, a base, a connection indicating plate, a piece of yoke iron, a piece of armature iron, a coil and a contact assembly. The utility model is characterized in that the utility model is provided with the contact assembly composed of a main moving contact, a main static contact, a contact supporting frame and a spring, wherein, the contact supporting frame is arranged in the susceptor, and the main moving contact is installed on the contact supporting frame and is tightly pressed by the spring; the contact supporting frame is connected with the armature iron through a connecting plate, and the connection indicating plate is fixed on the upper end of the susceptor; guard boards on both sides of the connection indicating plate cover the main static contact, and the middle of the indicating plate is provided with two holes which are the guiding and limiting holes of a binding screw of a main circuit. The utility model is suitable for the start-up, the stop and the operation control of single-phase motors in household electric appliances, such as air conditioners, electric freezing cabinets, etc.

Description

The single phase alternating current (A.C.) contactor

The utility model relates to a kind of motor starting of household electrical appliance, A.C. contactor that stops and turning round controlled.

A.C. contactor is the important electrical equipment that the control alternating current motor starts, stops and turning round, and is one of indispensable element in China's industrial development.The A.C. contactor of China's production at present all is the three-phase ac contactor of control three-phase alternating-current motor, rapid raising along with expanding economy and living standards of the people, various household electrical appliance enter family, home-use electric weight is increasing, household electricity all is again single phase poaer supplies, need with the single phase alternating current (A.C.) contactor control single-phase motor starting, stop and turning round.But owing to still there is not the single phase alternating current (A.C.) contactor at present, a lot of users have to substitute with industrial three-phase ac contactor, have only used a wherein phase, and two-phase is idle in addition, and this not only makes troubles to user's repacking, and causes waste.

The purpose of this utility model is at the problems referred to above, and the work of a kind of adaptation single phase poaer supply is provided, and satisfies the starting of single-phase motor in the household electrical appliance such as air conditioner, ice box, the single phase alternating current (A.C.) contactor that stops and turning round and control.

The utility model comprises shell, direction board, yoke, armature, coil and sets of contacts component.Shell is made up of pedestal and base, and pedestal and base through screws connect into an overall structure.The sets of contacts component comprises initiatively contact, main fixed contact, contact supporting and spring.Contact supporting is arranged in the pedestal, is moveable element.Initiatively contact is contained in the top of contact supporting, can move with contact supporting.Main fixed contact is contained in the muscle groove of pedestal center upper portion, and is fastening by the elastic force of self.The copper matrix loaded current of main fixed contact, contact are as the conductor of connection and breaking current, and the long-life is hanged down wearing and tearing, and the copper matrix of bending makes electric orphan wrap in wherein and can not reveal outward, has increased security performance.Spring is contained in the spring housing of contact supporting, and the spring lower end is pressed in initiatively on the contact, between the contact that makes contact initiatively and the contact of main fixed contact certain pressure is arranged, and guarantees that contact well.

Yoke is arranged on base inside, is the iron core that attracts armature.Armature is arranged in the pedestal, is positioned at the below of contact supporting, and is fixed on the contact supporting.Mounting coil is on the center pillar of yoke and armature.

Active contact of the present utility model and main fixed contact are arranged on the symmetrical center line of pedestal, also are provided with auxiliary contact in its both sides, use for the little electric current that transmits the signal of telecommunication.Auxiliary contact has 3 kinds of combining forms, and promptly 1 often opens+1 normally closed interlock, 2 normally open contacts, 2 normally closed interlocks are selected to use for the user.

Connector name plate of the present utility model is clamped on the upper end of pedestal with fin, and the backplate of two sides elongation encases main fixed contact, and charged position is not exposed.The upper surface circular hole of connector name plate has the positive interaction of drawing to screwdriver, and step makes screw that the stop bit effect be arranged in the circular hole, prevents to come off when it from unscrewing.

Behind coil electricity, the electromagnetic force that yoke produces attracts armature to move down, and armature moves down, and drives the active contact and moves down, and 2 contacts of active contact are contacted with 2 contacts of main fixed contact, constitutes the loop, makes electric motor starting.When coil blackout, the electromagnetic force that yoke produces disappears, and initiatively contact and main fixed contact break away from, and leans on the elastic reset of back-moving spring, makes circuit disconnect the motor stall.

The utility model is reasonable in design, simple in structure, handsome in appearance, easy to use, adapts to the needs that household electrical appliance use single phase poaer supply.

Fig. 1 is a kind of example structure schematic diagram of the present utility model, and Fig. 2 is the connector name plate scheme of installation.The utility model is described in further detail below in conjunction with accompanying drawing.

The utility model comprises shell, connector name plate 11, yoke 6, armature 8, coil 17 and the sets of contacts component of being made up of pedestal 1, base 2.The sets of contacts component is made up of active contact 12, main fixed contact 10, contact supporting 9 and spring 15.Contact supporting 9 is arranged in the pedestal 1, is moveable element.Initiatively contact 12 is arranged on the middle part in the pedestal 1, is contained on the contact supporting 9, and main fixed contact 10 is contained in the muscle groove of center upper portion of pedestal 1, and fastening by the elastic force of self, the copper coin of bending wraps in wherein electric orphan, can not reveal outward.Spring 15 is contained in the spring housing 18 of contact supporting 9, and the lower end of spring 15 is pressed on the active contact 12.Armature 8 is arranged on the inside of pedestal 1, is positioned at the below of contact supporting 9, and by connecting plate 16 armature 8 and contact supporting 9 is coupled together.Yoke 6 is arranged in the base 2.Between base 2 and yoke 6, be provided with vulcan fibre pad 3, use as trimmer.Coil 17 is placed within the base 2, is enclosed within on the center pillar of yoke 6 and armature 8.Limited part 4 is clipped in the groove of base 2, can make back and forth movement in groove, in order to clamp the card rail.Spring 5 is arranged in the limited part 4, uses as the base clamping force.The bumper post 19 of rubber system is clipped in the hole of base 2 tightly, clamps when installing as the card rail and uses.Pedestal 1 is connected in aggregates with base 2 by bolt 7.Connector name plate 11 is clamped on the upper surface of pedestal 1 with fin.The backplate of the both sides elongation of connector name plate 11 is inserted in the pedestal 1, and main fixed contact is encased.Guiding and spacing hole that 2 circular holes 20 in the middle of the direction board are main circuit connection screws 14.From rising internal tooth cushion screw 14, on the static contact panel that is threaded into main fixed contact 10, the internal tooth form pad can be transferred lifting with screw threads, and is highly beneficial to guaranteeing that lead clamps.Word board card 13 is housed on connector name plate, can takes off at any time or block, number the usefulness of writing, make things convenient for the user for the user provides.

The utility model also is provided with auxiliary contact in the both sides of active contact 12, uses for the little electric current that transmits the signal of telecommunication, and adopts 1 often to open+1 normally closed interlock.Pedestal 1 of the present utility model, base 2, connector name plate 11 are working of plastics.

The important technological parameters of present embodiment is as follows:

1, rated operational voltage (Ue) is 220V

2, rated operational current (Ie) is 30A

3, specified power controlling (Pe) is 3.7KW or 5HP.

4, operational environment is controlled at-25 ℃～55 ℃, and height above sea level is no more than 2000m.

Claims

1, single phase alternating current (A.C.) contactor, comprise pedestal 1, base 2, connector name plate 11, yoke 6, armature 8, coil 17, screw 14 and sets of contacts component, yoke 6 is arranged in the base 2, armature is arranged in the pedestal 1, coil 17 is sleeved on the center pillar of yoke 6 and armature 8, connector name plate 11 is clamped on the upper surface of pedestal 1 with fin, it is in aggregates that pedestal 1 and base 2 are connected by bolt 7, it is characterized in that described sets of contacts component is made up of active contact 12, main fixed contact 10, contact supporting 9 and spring 15; Contact supporting 9 is arranged in the pedestal 1, initiatively contact 12 is arranged in the pedestal 1, be contained on the contact supporting 9, main fixed contact 10 is contained in the muscle groove of center upper portion of pedestal 1, elastic force by self is fastening, spring 15 is contained in the spring housing 18 in the contact supporting 9, and the lower end of spring 15 is pressed in initiatively on the contact 12; Contact supporting 9 is by connecting plate 16 and be positioned at pedestal 1, and the armature 8 of contact supporting 9 belows connects.

2, single phase alternating current (A.C.) contactor according to claim 1 is characterized in that described active contact 12 and main fixed contact 10 are positioned on the symmetrical center line of pedestal 1.

3, according to claim 1,2 described single phase alternating current (A.C.) contactors, it is characterized in that described screw 14 for rising internal tooth cushion screw certainly, screw 14 is with on the static contact panel that is threaded into main fixed contact 10.

4, according to claim 1,2 described single phase alternating current (A.C.) contactors, it is characterized in that the backplate of the both sides elongation of described connector name plate 11 is inserted in the pedestal 1, main fixed contact is encased; 2 circular holes 20 in the middle of the direction board are the guiding and the spacing hole of main circuit connection screw 14.