CN1010148B

CN1010148B - Contactor

Info

Publication number: CN1010148B
Application number: CN 87106534
Authority: CN
Inventors: 赫尔穆特·莱默尔; 约瑟夫·里斯特豪斯
Original assignee: Square D Starkstrom GmbH
Current assignee: Square D Starkstrom GmbH
Priority date: 1987-09-22
Filing date: 1987-09-22
Publication date: 1990-10-24
Also published as: CN1032264A

Abstract

A kind of have a contact device, calutron, movement device and each go up mutually heat and magnetictrip are all arranged contactor according to possible conditional request, promptly except that switching on and off from each distant place with also available artificial, and the while can guarantee to transship and the safety during short circuit.

Here also advise another kind of structure, in this structure or the armature of calutron acts on turn-on key or it links by the prolongation piece that the common bridge-type of crank and contact device contacts horse, also has slide block simultaneously, be used for blocking crank on the one hand, be used for blocking heat and magnetictrip on the other hand.

Description

Contactor

The present invention relates to a kind of chlamydate contactor, near design in the shell of installation side a kind of contact device and a kind of movement device of vertically laying are above it being arranged, in movement device one side, each all is equipped with thermal overload release and magnetictrip mutually, and it is connected with movement device.

The structure of some contactors and motor protecting switch and pattern are known.Motor protecting device protects the contactor of a class to form by a kind of motor heating that is included into generally speaking; in a shell with fixed structure type, whole contact devices is housed not only; the calutron that is used for making the contact device action also is housed; and this calutron or be installed on the installation side of contact device or be installed in the side of contact device away from installation side, above it promptly.The calutron movably bridge-type of armature by a connector and contact device contacts horse and links.The calutron that is surrounded by shell in this structure type requires a very big space, and the device of this structure also is very expensive.Motor heating protection part also is housed in the shell of this known structure type, and when current capacity and heat load surpassed certain limit, this motor heating protection part just played the dropout effect.Though structurally spent very big capital in fact the heat of motor protection be very slow pure comparatively speaking; because it is very slowly that current capacity and heat demand increase; for in emergent fault; as guaranteeing the work of above-mentioned motor under the situation of short circuit; the safeties that for this reason also need a kind of separate type here, this device are installed in the outer separate type shell of above-mentioned contactor shell.In order to produce necessary electrical connection, need 18 joints altogether.

Be known that in addition in the general contactor that constitutes by a kind of contact device and a kind of calutron, the motor protection switch that separates linked up, need 12 joints for this reason altogether, must be connected with electric wire on each joint by electric wire.

Wiring is very tediously long with time-consuming in these two kinds of structure types, and it not only takes and also wants many joints on material but also the equipment, except that expense equipment with in this multistage instrument, to take big quantity space, as being installed in the switch cubicle.

The present invention is to be starting point with the given the sort of contactor of this paper, because its frame mode, this contactor constitutes compact, only need little space on assembly wall or in the switch cubicle, and wiring is entirely in contactor inside.Also designed short circuit quick release or magnetictrip except that the three-phase thermal overload release, these two kinds of releases give switch lock and contact device with working signal, and motor protection switch is disconnected.Here low-voltage or operating current release have yet been designed.This fundamental drawback that is used as the contactor of motor protection switch is: except that carry out automatic disconnection with described motor protection, the only available hand of the connection of contactor realizes that by turn-on key the also only available hand of needed disconnection is realized by break key.

In fact all need contactor also can additionally disconnect under many situations and closure by mechanical means; require contactor to switch on and off in addition from the suitable position of another one; switch on and off from the another position when installing in switch cubicle with many other switchgears and also should lean on machinery or hand to realize, be on the lathe that the motor that will protect is housed as this position as contactor.

Therefore task of the present invention is a kind of contactor of design, makes except that hand switch yet may be switched on or switched off from each required or suitable position, and increases the space requirement of contactor and the obvious raising of construction expenditure.

Above-mentioned task is solved by the contactor that this paper begins to mention, promptly adorns a calutron at the another side of movement device, and the armature of this calutron is to act on turn-on key.This mode has basic advantage: people can design electric connection on calutron, and it can be linked on any one distant actuating mechanism.

Equally, this paper begins the contactor mentioned, also solved being proposed of task by the present invention, promptly a calutron is installed at the opposite side of movement device, the prolongation piece that the public bridge-type of its armature by flexible crank and contact device contacts horse links, also can design a slide block, block crank on the one hand, block heat and magnetictrip on the other hand.Here draw a basic advantage: that moves when contactor is threaded off has relatively reduced apart from size, makes the dropout action accelerate.Compare with prior art, when rapid-releasing, by crank mechanism, be installed in the public bridge-type contact horse movably that the displacement of bridge-type contact chip also can prolong, so the short-circuit protection of contactor improves greatly also.

But the superiority accessory rights on the structural configuration of the present invention on the contour structures draws in requiring.

Embodiments of the invention are by the figure expression, and note is as follows:

Fig. 1 is a kind of perspective view of contactor, and its next door is a calutron.

Fig. 2 is for being equipped with the vertical view of the contactor of calutron on Fig. 1.

Fig. 3 is the end view of arrow III direction.

Fig. 4 is the front elevation of arrow IV direction among Fig. 3.

Fig. 5 is the another kind of designed sectional side elevation of contactor under off-state.

Sectional side elevation when Fig. 6 is in on-state and break key action for the contactor by Fig. 5.

Sectional side elevation when Fig. 7 disconnects afterwards of short duration intermediateness for the contactor by Fig. 5 is in.

Fig. 8 is a sectional side elevation of pressing contactor state before the resetkey action of Fig. 5.

Fig. 9 is the schematic representation of apparatus that makes auxiliary contact action in the coil circuit.

The shell that comprises the bell-type shell top 2 that has outer casing bottom 1 and in Fig. 3 and Fig. 4, draw by the contactor of embodiment shown in Fig. 1 with dotted line.Outer casing bottom 1 is equipped with and is used for connecing the fixed contact piece of three-phase electricity and the contact device of

contact trip bolt

3,4 unillustrated having.This contact device that does not draw also comprises the common bridge-type contact horse with three flexible bridge-type contact chips, contact device is movement devices vertically upward with perpendicular to the parts of accompanying

drawing

2 and 3, in the present embodiment, switch lock 5 has the regulating wheel 8 that 6, one break keys 7 of a turn-on key and are used for regulating the adjustable type of electric current.Switch lock 5 comprises a mechanical device, and it is such formation, can be brought to on-position to such an extent as to have the bridge-type contact horse of bridge-type contact chip when turn-on key moves, and promptly receives on the fixed contact piece.Process when moving, break key also takes place to disconnect accordingly.In addition, thermal overload release works with switch lock.And in a side of switch lock, i.e. Fig. 1, in 2 and 3 the left side, and each all is equipped with such thermal overload release with bimetallic piece 10 mutually.At base plate 1(accompanying drawing 3) the back side magnetictrip or the short circuit quick release that effectively connect with switch lock that does not draw among the figure also is housed.

According to the another side space of the present invention at switch lock 5, the right and the space below jacket 2 of promptly pressing accompanying

drawing

1,2 and 3 drawn switch locks 5 are used for installing calutron 13, and the armature 19 of calutron 13 can act on turn-on key 6.

Good structure is: turn-on key has a plastic pin 12 that protrudes in switch lock 5 sides, and the ledge 25 of armature 19 is placed on above the pin 12.See that by Fig. 1 the cross section of pin 12 is rectangles, its advantage is: the cross section of projection 25 is leg-of-mutton, and the triangle horizontal sides can be placed on the pin 12 like this, and a leg-of-mutton another side part is pressed the front of accompanying drawing 1 around pin 12.

The iron core 14 and the armature 19 of calutron are made tripod shape.Coil 15 is fixed on the middle pin of iron core 14.Coil has 16, two coil leads 17 of base and the 18 usefulness attachment screws of plastics to be fastened on the base 16.Armature 19 best bets are to place rotationally in this embodiment.For this reason in the embodiment of type as mentioned above, 24 on the beam that armature 19 is made by its plastics that are the U font in the scope of dividing plate 26 around, and on a cross section and beam 24 link.Press the end place of Fig. 4 beam 24 at dividing plate 26, promptly press accompanying drawing 2 by rotating shaft 23 and two supports 21 and 22(near the right-hand member of dividing plate) fix, one side of these two supports is fixed on again on the upper flange of bobbin 20, projection 25 is associated on the beam 24 at the other end place of dividing plate 26 in this structure, and is just drawn as accompanying drawing 2.Represent three pin of armature 19 with

label

27,28,29 in accompanying drawing 4, also marked label 30 in accompanying

drawing

3 and 4, above-mentioned like this installation limit just shows clear.

The coil 15 of calutron and iron core 14 can remain on the described space below the jacket 2, as between guiding rib and baffle plate.The range of movement of rotatable armature 19 is limited by plate washer by known method.Solving the fixing a kind of good structure of calutron is: coil 15 and iron core 14 removably are fixed in

shell

1 and 2 by

plastic pin

31,32 and 33, so just are easy to install.

Fig. 5 to Fig. 8 has shown the another kind of contactor of the present invention, more effective embodiment.With regard to described structure division and corresponding, just with identical label according to Fig. 1 to Fig. 4 embodiment.Yet in the present embodiment, the armature 19 of calutron 13 is positioned at the bottom promptly towards contact device 34 1 sides among the figure.Armature 19 is installed on the beam 24, and at its end, be exactly at left end on figure, be installed on the runing rest 41, the other end of beam 24 links by hinge 42 and the crank be made up of toggle-

action lever

36 and 37, simultaneously toggle-

action lever

36 and 37 are coupled to each other by a hinge 53, to be two toggle-action levers be placed vertically for the plane of accompanying drawing 5 to 8 the best way each other, and leave certain distance, so as shown in Figure 7, they just can be connected to by hinge 54 toggle-action levers on the prolongation piece 38 of common bridge-type contact horse 39 towards two sideway swivels of the coil 15 of calutron 13, contact horse 39 with known method bridge-type and carry all elasticity bridge-type contact chips.Consider that from the position toggle-action lever is preferably in the dead slot that prolongs piece 38, at the spring 56 that can play the support effect in the inboard at shell 2 tops of upper ends that prolongs piece with its front end.

A slide block 40 that is parallel to it is placed on the right side that prolongs piece 38 on figure, and the edge prolongs piece 38 parallel sliding in the guide pad that it can not mark on figure.Slide block 40 has a slotted eye 43, and toggle-action lever 37 nose flange 46 is stuck in this slotted eye when contactor shown in Figure 5 is static.As shown in Figure 5, nose flange 46 has an inclined-plane in the above, and the slotted eye 44 of another slide block 40 is to use in order to catch the nose flange 47 of magnetictrip 35.Because perpendicular to as Fig. 5 plane, adjoin and settling three magnetictrips 35 that three-phase electricity is used, slide block 40 also has three slotted eyes 44 like this, nose flange 47 is contained on the end block 57 that the armature 58 of one and magnetictrip 35 links, and a spring 59 also is housed between the bobbin of end block 57 and magnetictrip 35.

Also have three other slotted eyes 45 in the upper end of slide block 40, can block three nose flanges 48 that adjoin the thermal overload release 9 of placement perpendicular to plan.Have an inclined-plane and link at its downside by accompanying drawing 5 nose flanges 48 with a plate that can move horizontally.It is to be designed to three such plates 60 or baffle plate, and above-mentioned thermal overload release 9 also is fixed in each plate or the baffle plate.

Break key 7 is to place so in this embodiment in addition, makes it can act on the upper end of slide block 40 when action.Also have resetkey 49 in addition, this device is so to arrange and constitute, and toggle-

action lever

36 and 37 can return to normal inactive state from trip status and by the flex point shown in the accompanying drawing 7 when key 49 actions.

It is as described below to the working condition of contactor embodiment of the present invention shown in Figure 8 to press Fig. 5, is in inactive state by contactor shown in the accompanying drawing 5, and just it also there is not connection.The connection of contactor by away from operating position realize that winding wiring 61 is for this reason and is provided with, in Fig. 5 it be placed in contactor above, it also can be placed on towards moving down into approximately and

general joint

3,4 conplane places.In case coil 15 energisings, the contactor adhesive, promptly armature 19 moves upward, and simultaneously also with the prolongation piece 38 of having gone up beam 24, toggle-

action lever

36,37 and having had bridge-type contact frame 39, the contact of contact device 34 is just closed like this, and this moment, slide block 40 was in the origin-location.Accompanying drawing 6 has marked on-state.Contactor is not only connected but also is disconnected generally and all finishing by calutron.Disconnection can also be finished by pressing break key 7, and slide block 40 is moved down.The upper limb of slotted eye 43 just bumps on the ramp of the nose flange 46 of crank like this, and make the flex point of in accompanying drawing 5, drawing come out to turn left from the right side by one section dead point, forward the position shown in the accompanying drawing 7 left to and make, finish to rotate fast contacting moving of horse 39 by spring 56 with prolongation piece 38 and bridge-type.Just imitated short circuit by following process, even when coil 15 also is being in open position as shown in Figure 7 and also has voltage, only needing to press resetkey 49, contactor can be connected once more, therefore can cross the dead point to the right, crank just can be returned to origin-location as shown in Figure 6 gentlier.Pressure by spring 56 makes crank remain on the hettocyrtosis position to the right.When one short-circuit condition occurs mutually, corresponding magnetictrip 35 adhesives, and slide block is moved down by nose flange 47 again are then when slide block 40 is run into nose flange 46 by the top edge of its slotted eye 43, the bending position on the crank precession left side, and finish the disconnection of collision type again.This equally also is applicable to thermal overload release 9, and this thermal overload release can lean on its upper end to anticlockwise when overload, and makes the inclined-plane of nose flange cause slide block 40 downward moving, and finishes the disconnection process as above-mentioned.

The principal advantages of above-mentioned contactor is: it is moving but also can realize by remote control that electromagnetism is regulated not only armrest; further advantage is to have many-sided function; promptly good short-circuit protection performance is arranged when the rapid-releasing by increasing distance; further advantages are that people can know very soon that with this contactor the time what reason causes accident.People have also designed activation signal and its indicator light for this reason, indicate the appearance of accident.

This contactor also can be by the equipped auxiliary contact of known method, and for example these auxiliary contact can increase in the capsule on the front that is contained in jacket, can contact horse 39 with prolongation piece 38 and bridge-type here and carry out mechanical attachment.

Fig. 9 has represented the additional contact of the coil 15 that auxiliary contact 51 are calutron simply.Auxiliary contact 51 usefulness contacts can be connected on the plate-shaped springs 52, and this plate-shaped springs is worked in this wise: when for example movably action element 50 is pushed by one, make this plate-shaped springs 52 upwards be bound to the position that dotted line draws.Action element 50 can be corresponding with nose flange in the thermal overload release 48 and be worked.

Claims

1, a kind of have a shell (1,2) contactor, wherein near installation side (30) have a contact device and above it vertical direction one movement device is arranged, side at movement device (5), each is gone up mutually and all is equipped with and its thermal overload release that effectively connects (9) and magnetictrip, it is characterized in that calutron (13) is arranged on the opposite side of movement device (5), its armature (19) acts on turn-on key (6).

2, a kind of have a shell (1,2) contactor, wherein near installation side (30) have a contact device and above it vertical direction one movement device is arranged, each phase of a side at movement device (5) all is equipped with thermal overload release (9) and the magnetictrip that connects effectively with it, calutron (13) is arranged on the opposite side of motion control device (5), its armature (19) is by driving crank bar (36,37) the prolongation piece (38) that contacts horse (39) with the common bridge-type of contact device (34) links, it is characterized in that design has slide block (40), it blocks toggle-action lever (36 on the one hand, 37) and on the other hand block heat and magnetictrip (9,35)

3, by the described contactor of claim 2, it is characterized in that armature (19) is fixed on the beam (24), an end of beam is placed on the runing rest (41), and its other end links by hinge (42) and toggle-action lever (36,37).

4, by claim 2 or 3 described contactors, it is characterized in that: slide block (40) has slotted eye (43,44,45), is used for blocking the nose flange (46,47,48) of toggle-action lever (36,37) and magnetictrip (35) and thermal overload release (9).

5,, it is characterized in that break key (7) rotation like this, so that it acts on slide block (40) when action by the described contactor of claim 4.

6, by the described contactor of claim 5, it is characterized in that: resetkey (49) is arranged, and it is placed in this wise, and toggle-action lever (36,37) can be returned to normal resting position from open position (bending position) when it moves and make.

7,, it is characterized in that thermal overload release (9) and action element (50) acting in conjunction throw off the auxiliary contact (51) in the circuit of the coil (15) that is in calutron (13) by the described contactor of claim 6.

8, by the described contactor of claim 7, it is characterized in that action element (50) acts on the plate-shaped springs (52) that has auxiliary contact (51).

9, by the described contactor of claim 1, it is characterized in that contact-key (6) has the pin (12) of a side direction, the flange (25) of armature (19) is placed on above the pin (12).

10, by claim 1 or 9 described contactors, it is characterized in that armature (19) is rotating.

11, by the described contactor of claim 10, the armature (19) and (14) unshakable in one's determination that it is characterized in that calutron (13) form the tripod shape, coil (15) is fixed on the middle pin of iron core (14), armature (19) is centered on also and it links in the scope of dividing plate (26) by the beam of being made by the plastics that are the U font (24), end scope inner beam (24) at dividing plate is placed on the support (21 that is fixed on the bobbin rotationally by rotating shaft, 22) in, go up formation flange (25) at the inherent beam of other end scope (24) of dividing plate (26).

12,, it is characterized in that the coil (15) of calutron and (14) unshakable in one's determination removably are fixed on shell (1,2) lining by plastic pin (31,32,33) by the described contactor of claim 11.