CN2583805Y

CN2583805Y - Three-phase magnetic lock large load contactor

Info

Publication number: CN2583805Y
Application number: CN 02260701
Authority: CN
Inventors: 许安良
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-15
Filing date: 2002-10-15
Publication date: 2003-10-29
Anticipated expiration: 2012-10-15

Abstract

The utility model relates to a three-phase magnetic lock large-load contactor, particularly an execution master part which is used for the control of no power consumption and the long switching on and off in the electric products, such as a switching device of a three-phase IC card electric energy meter, a three-phase electric appliance, a protection switch, etc. A contact switching mechanism and an auxiliary contact set are fixed on a main seat; a rotating shaft frame is connected with the main seat through a supporting plate; a pull and push plate which is provided with a reset button is connected with the contact switching mechanism; the main seat is connected with a bottom case and a bottom plate and is connected with an upper casing; therefore, the three-phase magnetic lock large-load contactor is formed. The utility model also comprises a framework with an armature and a coil, which is that magnetic steel is clamped between two magnetic yokes, magnetic shield plates which are connected with the outer sides of the magnetic yokes and a driving mechanism of a magnetic lock, which is formed by the connection of one end of the armature and the pull and push plate. In a static contact assembly of the contact switching mechanism, a static contact is fixed on a copper frame, and besides, an arc static contact is fixed on the copper frame; in a moving contact assembly, a moving spring leaf which is used for driving contacts is fixed on the rotating shaft frame, and besides, an arc spring leaf which is provided with an arc moving contact is fixed on the rotating shaft frame; the arc spring leaf is connected with the pull and push plate. The utility model has the advantages of compact structure small size and long service life and has the function of bistable magnetic lock storage.

Description

Three-phase magnetic padlock heavy load contactor

Technical field

The utility model relates to a kind of three-phase contactor, can be widely used in and make the executive agent that no power consumption, long switching are controlled usefulness in the electric products such as power supply switching, three-phase electric apparatus control, three-phase protective switch, three-phase no-spark, little power consumption, long-life contactor of three-phase IC-card electric energy meter.

Background technology

Existing Chang Yong three-phase contactor, its volume is bigger, need when excitatory power for a long time to coil, thereby coil adhesive energy consumption is big.Big electric current by the time do not have the antisurge ability, and do not have the bistable magnetic latch function.

Summary of the invention

Technical problem to be solved in the utility model is: a kind of three-phase magnetic padlock heavy load contactor is provided, and its compact conformation, little, the working stability of volume, long service life, ampacity is big, driving power consumption is little, have the energy-conserving product of bistable magnetic latch function.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: three-phase magnetic padlock heavy load contactor, by the contact switching mechanism, the auxiliary contact group is fixed on the seat of honour, the rotating shaft frame is connected with the seat of honour by support plate, the draw back plate of band reset button is connected with the contact switching mechanism, and the seat of honour and end box, base plate connect into integral body be connected with upper casing again constitute, also include by clamping between two yokes magnet steel and band armature are arranged, the skeleton of coil, and yoke also is connected with magnetic shield panel outward, one end of armature and the magnetic padlock driving mechanism that draw back plate connects and composes, and in the fixed contact assembly of described contact switching mechanism, except that being fixed with fixed contact, also be fixed with the arc fixed contact on the copper frame, in the moving contact assembly, except that the movable contact spring of fixed band moving contact, also be fixed with the arc reed of band arc moving contact, and the arc reed is connected with draw back plate on the rotating shaft frame.

Compared with prior art, advantage of the present utility model is: because of only need to a coil short time of input just or reverse impulse, just can constitute magnetic loop by armature, yoke, magnet steel, coil, and the magnetic padlock structure arranged, keep the magnetic padlock state, so when excitation just do not need for a long time to coil power supply, is little power consumption thereby reduce coil adhesive energy consumption, becomes energy-conserving product.And its compact conformation, volume is little.Again because of between the dynamic and static contact of a pair of arc (arc contact) distance less than distance between a pair of dynamic and static contact (main contacts); be that the arc contact is ahead of main contacts when action; contact earlier; and be that main contacts disconnects earlier when disconnecting; arc disconnects behind the contact; therefore optional usefulness has antisurge, anti-clinkering, arc resisting material arc contact, can effectively protect main contacts when closure, the drawback that big electric current arcing is burnt when avoiding by big electric current contact clinkering and disconnection.Select for use contact resistance little, the material main contacts that the conducting amount is big, big current lead-through after making it bear closure, now form by master, arc contact, can antisurge, can carry big electric current, nonarcing main contacts switching mechanism again,, and have the bistable magnetic latch function so contactor is shock-resistant, reliable in action, working stability, long service life.

Description of drawings

Fig. 1. structural representation of the present utility model (stereogram).

Fig. 2. contact switching mechanism structural representation (stereogram).

Fig. 3. dynamic and static contact assembly structural representation.

Fig. 4. auxiliary contact group structural representation.

Fig. 5. the magnetic padlock structural representation.

Fig. 6. magnetic padlock driving mechanism schematic diagram.

Fig. 7. user mode reference diagram of the present utility model, a. contact off-state, b. contact closure condition.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

The seat of honour 7, upper casing 1, end box 8 form through the mould casting by heat-resisting, fire-retardant, insulation, the good plastics of anti-seismic performance, and base plate 9 does not describe in detail for iron zinc-plated base plate is same as the prior art, as shown in Figure 1.

The bearing pin at rotating shaft frame 4 usefulness two ends is movably connected on the support plate 6 of the seat of honour 7 two sides, one sidewall central indentation and draw back plate 3 tight fits of being with reset button 2.

In the auxilliary groove on the seat of honour 7 support plates 6 limits, the upper and lower a pair of auxiliary contact 16 of often opening, a pair of normally closed auxiliary contact 22 formation auxiliary contact group and the push rods 17 fixed respectively.

Three groups of dynamic and

static terminal blocks

10,15 of drawing that are connected with fastening terminal 5 are screwed respectively in three major troughs of the seat of honour 7 two ends.

The fixed contact assembly is fixed on quiet drawing on terminal block 15 1 ends and is formed by the stairstepping copper frame 13 that is welded with arc fixed contact 14, fixed contact 12.

The moving contact assembly is by the arc reed 19 of movable contact spring 21 that drives contact 20 and band arc moving contact 18, be screwed on the lower surface of rotating shaft frame 4, movable contact spring 21 end in addition is weldingly fixed on the end of the movable contact spring braiding copper wire 11 that is flexible coupling, arc reed 19 end in addition is embedded in the bayonet socket of draw back plate 3 upper ends, be welded with the moving end in addition of drawing terminal block 10 of braiding copper wire 11, pass draw back plate 3 middle through holes and form.

The contact switching mechanism is made of with three groups of moving contact assemblies that are installed on the rotating shaft frame 4 three groups of quiet fixed contact assemblies of drawing terminal block 15 1 ends that are fixed on the seat of honour 7.Shown in Fig. 2,3,4.

Be around with 28 liang on the skeleton of coil 29 and be embedded with copper stent 27 in the middle of inboard, the armature 26 of strip places in the skeleton 28, is connected the integral body that formation can be rotated around the fulcrum pivot pin with through hole on the copper stent 27 with the pivot pin in the middle of its both sides.As shown in Figure 5.

The magnetic padlock driving mechanism is by two

24 clamping Nd-Fe-B magnet steels 25 of shape yoke and have the skeleton 28 of armature 26, coil 29, for preventing the magnetic diffusion and strengthening magnetic flux density, two surfaces of yoke 24 also are adsorbed with the magnetic shield panel 23 of box-like, an end of armature 26 be connected with the lower end bayonet socket of draw back plate 3 form.

The magnetic padlock driving mechanism is placed in the housing 30, housing 30 is fixed on the lower surface of the seat of honour 7 with screw, and the contact switching mechanism is installed in 3 major troughs on the seat of honour 7 tops, the auxiliary contact group is installed in the auxilliary groove on the seat of honour 7, connect into integral body with two the long spiro nails seat of honour 7 that will assemble and end box 8 and base plate 9 that other control circuit is installed, cover is gone up upper casing 1 more at last, and three-phase magnetic padlock heavy load contactor is assembled into.

When giving direct impulse of coil 29 inputs during use, the armature 26 picture seesaws in the skeleton 28 rotate around copper stent 27, and upset constitutes flux circuit to the another location by a position, shown in Fig. 7 a.Simultaneously armature 26 is delivered to rotating shaft frame 4 by the draw back plate 3 that is connected, and drives movable contact spring 21, arc reed 19, makes moving contact 20, arc moving contact 18 on it break away from fixed contacts 12, arc fixed contact 14, treat direct impulse after, still keep this magnetic padlock state to claim forward to latch.

If when giving reverse impulse of coil 29 inputs, then the armature 26 in the skeleton 28 returns origin-location formation magnetic loop, shown in Fig. 7 b.Armature 26 drives draw back plates 3, and rotating shaft frame 4 is rotated, and drives movable contact spring 21, arc reed 19 and makes the moving contact 20 on its mountain, 18 contacts of arc moving contact closed, treat reverse impulse after, still keep this magnetic padlock state to claim oppositely to latch.Promptly finished one and be transformed into the process of reverse magnetic padlock, constantly repeated said process, made the contactor constantly finish the break-make task from the forward magnetic padlock.

Claims

1. three-phase magnetic padlock heavy load contactor, by the contact switching mechanism, the auxiliary contact group is fixed on the seat of honour (7), rotating shaft frame (4) is connected with the seat of honour (7) by support plate (6), the draw back plate (3) of band reset button (2) is connected with the contact switching mechanism, and the seat of honour (7) and end box (8), base plate (9) connect into integral body be connected with upper casing (1) again constitute, it is characterized in that also including by clamping between two yokes (24) magnet steel (25) and band armature (26) are arranged, the skeleton (28) of coil (29), and the outer magnetic shield panel (23) that also is connected with of yoke (24), the magnetic padlock driving mechanism that one end of armature (26) and draw back plate (3) connect and compose, and in the fixed contact assembly of described contact switching mechanism, copper frame (13) is gone up except that being fixed with fixed contact (12), also be fixed with arc fixed contact (14), in the moving contact assembly, rotating shaft frame (4) is gone up except that the movable contact spring (21) of fixed band moving contact (20), also be fixed with the arc reed (19) of band arc moving contact (18), and arc reed (19) is connected with draw back plate (3).

2. heavy load contactor according to claim 1, an end that it is characterized in that armature in the magnetic padlock driving mechanism (26) is connected with draw back plate (3) lower end bayonet socket, the magnetic padlock driving mechanism places in the housing (30), with screw housing (30) is fixed on the lower surface of the seat of honour (7).

3. heavy load contactor according to claim 1, it is characterized in that being around with skeleton (28) the two inboard middle copper stents (27) that are embedded with of coil (29), the armature of strip (26) places in the skeleton (28), is connected with through hole on the copper stent (27) with the pivot pin in the middle of its both sides.

4. heavy load contactor according to claim 1 is characterized in that the fixed contact assembly by the stairstepping copper frame (13) that is welded with arc fixed contact (14), fixed contact (12), is fixed on quiet drawing on terminal block (15) one ends and forms.

5. heavy load contactor according to claim 1, it is characterized in that the moving contact assembly is screwed on the lower surface of rotating shaft frame (4) by the arc reed (19) of movable contact spring (21) that drives contact (20) and band arc moving contact (18), movable contact spring (21) end in addition is weldingly fixed on the end of the movable contact spring braiding copper wire (11) that is flexible coupling, arc reed (19) is held in the bayonet socket that is embedded in draw back plate (3) upper end in addition, and the moving end in addition of drawing terminal block (10) that is welded with braiding copper wire (11) passes the middle through hole of draw back plate (3) and forms.