CN1208499A - Protected switch with a control grip securable against switching on - Google Patents
Protected switch with a control grip securable against switching on Download PDFInfo
- Publication number
- CN1208499A CN1208499A CN96199801.6A CN96199801A CN1208499A CN 1208499 A CN1208499 A CN 1208499A CN 96199801 A CN96199801 A CN 96199801A CN 1208499 A CN1208499 A CN 1208499A
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- China
- Prior art keywords
- cover piece
- operating grip
- housing
- flange
- protection switch
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H9/281—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock
- H01H9/282—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member making use of a padlock and a separate part mounted or mountable on the switch assembly and movable between an unlocking position and a locking position where it can be secured by the padlock
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/28—Interlocking, locking, or latching mechanisms for locking switch parts by a key or equivalent removable member
- H01H2009/288—Provisions relating to welded contacts
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- Breakers (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Lock And Its Accessories (AREA)
- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
The invention relates to a protected switch (1) with a housing (6) and a rotatable control grip (3) securable against switching on by at least one padlock. A cover (2) large enough to cover the control grip (3) and lockable by means of the padlock(s) is foldably fitted to the housing (6). In the cover (2) there is a recess (22) into which the control grip (3) can be received. The recess (22) can be set to its off position in accordance with the position of the control grip (3) with the contacts of the protected switch fully open and the control grip (3) can be received into the recess (22) in the cover (2) only in its off position, and the cover (2) can be moved into the closed position, where it can be locked by means of the padlock(s) only with the control grip in the off position.
Description
The present invention relates to a protection switch, particularly power switch or motor protecting switch, have housing and a rotatable operating grip that settle and that can prevent to connect by pinning at least one padlock in housing.
The power switch of this form for example can be used as the safety switch of machine and for example be placed in the electric current conveying of drive motors.In the situation of maintenance and service work, can trouble free service for the maintainer that makes work, the electric current that just will offer the machine continuous firing disconnects by safety switch and this safety switch for example pinned preventing reliably by the locking device of band padlock to be connected.For this reason, the embodiment of the power switch of a known above-mentioned form, used an operating grip, it is placed in the cylindrical shape guiding structural of a housing as basin shape turning handle, wherein, on the cylindrical wall and on the wall of basin shape operating grip one or more through holes are being set, their mutual correspondences one when the open position of power switch are made peace and are allowed to intert a padlock, so that power switch can be locked on this open position.But the problem that exists in this protection switch of using as protection switch is, this switch is for example owing to mutual melting welding may take place on its connecting point position the high short circuit current that occurs in short-term, like this, though also implement corresponding switch motion under the disconnection of power switch, described contact can not be separated from each other in the inside of power switch; Though so disconnect but still continuation maintenance connection on its power supply at the machine power switch that connects on the power switch; Thereby be a danger for the staff of machine.Thus, then require this motor protecting switch and power switch should so guarantee safety as protection switch, promptly it can be discerned the contact situation of melting welding and no longer allow the switch of this melting welding is carried out locking.
A kind of power switch that is provided with as protection switch is disclosed from US-PS5302925; it is by a lock bolt that is provided with on cam disc, has only when operating grip and just can not realize the operation of a locking device that prevents to connect mutually during melting welding at the contact of its open position and power switch.What utilize is herein, and under the contact situation of the melting welding of power switch, reseting torque is applied on the operating grip by the brute spring of switch inside and makes it no longer return to the position of its disconnection.The shortcoming of this power switch is, applied machinery is together with cam, cam disc and the latch structure complexity of controlling are thus made difficulty, thereby are caused the high cost of manufacturing, on the other hand, even the easy manual operation of power switch is when operating grip is brought to its correct open position forcibly and is fixed herein, also like this when then, the locking device that prevents to connect being carried out unallowed operation.
GB-PS1528692 has described a cover piece that is used for the locking power switch, and it can for example be provided with a turning handle.This cover piece can be used as loosening independent member and is assemblied on the operating grip that will pin.This mode has significant disadvantages, and cover piece may be lost easily.On the other hand, under the contact situation of the melting welding of power switch, can also realize locking with this cover piece to produce obliquity or the possibility obliquity a little operating grip owing to the melting welding effect, because, after the assembling cover piece, can also carry out compulsory a rotation and a locking subsequently by padlock to open position.
Thus; task of the present invention is; known protection switch is done development remodeling; so that protection switch can prevent from any lock operation or the manual operation done for the purpose of pinning this protection switch from so just can realize a safe and reliable non-hazardous job on the machine of being protected with this protection switch under the contact situation of melting welding reliably.
This task is solved by the scheme of claim 1 characteristic on the protection switch basis of a described type.
The favourable organization plan of the present invention can be by obtaining in the dependent claims.
The present invention's suggestion is provided with an openable cover piece on the housing of protection switch, it has enough physical dimension that is used for the overlapping operation handle, and can be used to locking by padlock.In addition, this cover piece has a groove that is used to set operating grip, and wherein, the position when this groove is in it and disconnects a position according to operating grip under the contact situation that protection switch is opened fully positions, that is to say, operating grip in the position when " disconnection " contact be not melting welding; This operating grip only just can be embedded in the groove of cover piece when its open position; This cover piece is only being opened under the protection switch situation of contact fully, and at this moment, operating grip places on its open position, just can move to off-position to pin by padlock.
When these contacts that are set to the protection switch of bridge joint for example because high short circuit current and mutually during melting welding, this operating grip is when the disconnection that it is turned to it-position, then owing to the brute spring in the switching device positioned inside always returns one basic (corner) amount of jumping from its open position to the direction of connecting, wherein, this corner is to count 5 ° to 10 ° approximately under the side melting welding situation at a double-break contact in general; And offer is counted 15 °-25 ° when a double-break contact is two side ends melting welding.Since this operating grip with respect to protection switch during for the protection switch of the contact of melting welding not that is disconnection its open position 5 to 15 ° obliquity is arranged approximately, make the groove that is used for operating grip that in cover piece, constitutes just can not be operated handle owing to the contact position occupied of melting welding is corresponding; So cover piece just can not be implemented in its off-position and pin by padlock.Because the subregion of operating grip and the edge of groove bump against and bump, so operating grip can not be embedded in the groove, but cover piece is positioned on the position that partially opens.According to this, disconnect but owing to just can prevent by padlock this switch pinning under the still still closed protection switch situation of the contact of melting welding.In contrast, cover piece is on the contact of protection switch just can fully move to operating grip in its off-position during not by melting welding, because operating grip can be embedded in the groove of corresponding arrangement; And can be by the padlock locking.On this position, cover piece is because it fully covers it and can prevent that the protection switch that the present invention is locked from connecting again according to the selected size of operating grip, because this moment from the outside can not be near this switch.
Advise that in the favourable flexible program of the present invention settle the receiving member of a folding paper on housing, it has a next door that is used for the gyroaxis of cover piece and is positioned at the operating grip that will cover.In this way, just can guarantee the guiding work of a correct cover piece and the location that the groove that is used for operating grip in the cover piece observe to be wished; And being connected of can not can losing of cover piece with protection switch.
Advise in order to pin the cover piece that is in off-position, a upright flange is set on the opposite opposed side with described gyroaxis and makes it be provided with at least one through hole being positioned on the housing and on operating grip next door so that respectively plant a padlock.This cover piece has a slot so that allow flange intert in the past on the off-position of cover piece, in order that, make these inserting holes that are used for padlock when off-position, be positioned at cover piece above.According to this, cover piece has only the contact when protection switch (as above stated like that) to be opened fully and because this this operating grip is embedded in the groove on the cover piece, could pin by padlock when cover piece can move to off-position like this.
In a particularly advantageous flexible program, the present invention's suggestion makes cover piece be provided with the bulkhead that stretches out at it facing on the side of operating grip, and it is opened operating grip when off-position from each side and extraneous packing.Just prevented manual operation in this way as much as possible to protection switch of the present invention, at cover piece towards the direction of its make position between moving period, to cause the operating grip of obliquity for example to bring on its correct position again and locate and cover piece is moved to by a screwdriver owing to the contact of melting welding generally is impossible on its off-position, and this is because such application entity bumps with the bulkhead of cover piece ahead of time; And then the sealing of cover piece also is impossible.For this reason, favourable mode is, the bulkhead fitting of cover piece has so length, and promptly it is sat on the leading flank of putting at housing up to the small part zone in the off-position of cover piece.Under the protection switch situation of locking, this operating grip can not be approaching from the outside, because it is surrounded by cover piece and bulkhead.
In order to make the processing ease of protection switch, a backstop is set between receiving member and cover piece to be used for strutting and make cover piece to be positioned at the position of opening with respect to operating grip cover piece.
As additionally preventing to advise in addition, described flange and the receiving member that is used for cover piece are covered by being bolted to the cover piece that also this bolt is placed in off-position on the housing in that measure manual on the protection switch of the present invention is housed.According to this, just can not be by the protection switch backing out single member and lock near the present invention.
Advantageous manner is the cover plate that a shaping one is set on flange, and it rests on the housing and covers to a bolt part of major general's housing.Just can prevent that in this way under the protection switch situation of locking, its housing does not destroy and can not be opened, thereby prevents, the contact that has disconnected is overlapped.
In order to make the operation and advise that a kayser nose is being set on the flange and on the through hole that padlock is used, and it can form a latching structure with the cover piece that places off-position easily on protection switch of cover piece that the present invention is provided with.In this way, cover piece is just fixing slightly by this kayser nose before sealing by padlock; This padlock just can be easily hung in the through hole for its setting.
In another favourable organization plan, the present invention's suggestion is provided with a kayser lip in facing toward on the flange upper edge of operating grip at least, and it stretches out from the upper side of operating grip; In addition, on the cover piece and in facing toward on the gauge arris of flange of groove an outstanding kayser arris is being set.According to this, under the protection switch situation that still can not open contact that disconnects (operating grip is not on its open position thus) owing to the contact of melting welding, this cover piece is just had an effect with the kayser lip of operating grip when the cover piece tegmentum closes with its kayser arris and is connected, thereby operating grip remains on when this open position and disconnects outside the position; And then prevented that operating grip is turned back to open position, simultaneously, cover piece also can not be placed on its make position.And big more for moving to the power that applies on its off-position with the cover piece that operating grip collides, this effect connects strong.For this reason, meeting purpose is that it is wedge shape structure that rise and that stretch out on the upper side of operating grip that this kayser lip is set to go towards the outward flange of operating grip.
Particularly advantageous mode is, for further safety, the bulkhead of this cover piece is set to so height, promptly rest on the kayser lip and operating grip when being in it and opening on the position outside the connecting point position at cover piece, this bulkhead also covers operating grip to a certain extent, thereby makes it cannot be approaching from the outside: and then cannot implement a manual operation.
The present invention can make the cost of manufacture of a power switch that meets the pinned structure that invention requires or motor protecting switch cheap; because locking device of the present invention is for large batch of production power switch or motor protecting switch; only in the situation that the 2-3% of total output wishes, need additionally to be configured on the switch; simultaneously, needn't change the setting of switch inside.
By accompanying drawing the present invention is done detailed explanation below, wherein, protection switch of the present invention is to be illustrated on the example of a power switch.
Fig. 1 is that the present invention is set to the power switch of protection switch and has the stereogram of operating grip;
Fig. 2 be Fig. 1 power switch vertical view and have the contact of opening fully and the operating grip of locking;
Fig. 3 is along cuing open the cutaway view of timberline A-A by the power switch of Fig. 2;
Fig. 4 is Fig. 1 power switch and the vertical view that has the contact of melting welding;
Fig. 5 is the end view of the power switch of Fig. 4;
According to Fig. 1, power switch 1 is placed on the housing 6.Constitute a columniform guiding of stretching out and take over 10 on the leading flank 6a of housing 6, it is contained on the leading flank 6a at the flange 10a seat that is shaped on the housing 6 by one.The operating grip 3 that has its integrally formed basin shape guide element 3a is installed in guiding adapter 10 and can sees Fig. 2 around the rotatable guiding of rotating shaft X.The guide element 3a of this basin shape also sits and puts on the upper edge of cylindrical shape guiding adapter 10, for example uses the edge of a past a little outside sweep.By a bolt 31, operating grip 3 is connected in power switch 1 switch inside axle formation effect with one in the mode that does not describe in detail, wherein, on off state by one in integrally formed guide member 3a bottom section window 30 and its below place the sign on the housing and can read.The structure of such power switch 1 is general common.Also possible is that guiding adapter 10 and operating grip 3 are disposed with respect to 180 ° of ground of described rotated position on side before the housing 6.
In order to make the operation of such power switch, for example with a machine mating reaction, it must be provided with a device, and this device can allow, and this power switch 1 is in the state that disconnects, promptly can lock under the unquestionable contact situation that is opened.For this reason, the power switch of describing in the accompanying drawings 1 has been equipped cover piece 2, and it is placed on the receiving member 5 swingably, and receiving member is fixed on bolt 50 before the housing 6 on the side panel 6a.These receiving member 5 (see figure 3)s have a swinging axle 52, around it cover piece 2 are supported swingably.Simultaneously, cover piece 2 can be positioned on the position of opening by a backstop 51, show as Fig. 1, this backstop 51 is fixed on to act on the receiving member 5 and at opposite side on the swinging axle 52 of receiving member 5 and in a side and acts on the cover piece 2, cover piece 2 has such size, promptly for closed it can be swung on the basin shape guide element 3 that operating grip 3 comprises shaping.And operating grip is fully covered on this position; Then, on this position, this power switch should be able to pin to prevent connection.In order to pin this opened power switch 1, in addition, a upright flange 4 usefulness screws 43 are fixed on the housing 6 in the opposite opposed side edge of the receiving member with having swinging axle 52 of operating grip 3.This flange 4 is settled on the next door of this columniform guiding adapter 10 with less spacing and is outstanding from this surface of shell on the direction identical with operating grip.This flange 4 be set to angular structure and have one that draw with bent angle from this upright flange and rest on the cover plate 44 on the side before the housing, by it, be packed on the housing with bolt.This flange 4 is equipped with three adjacent through holes 41 to be used for each slotting padlock in the surf zone thereon.Cover piece 2 is in front at it, opposite opposed zone with swinging axle has a slot 24, return back to its off-position that is during in its position that operating grip is covered at housing 2, the zone that has through hole 41 of flange 4 just can intert to pass by and this have padlock will be positioned at cover piece 2 (cover piece of closing) with the lug area of through hole 41 top by slot 24; Padlock just can be hung in this through hole 41 like this, so that cover piece can be locked on this position.Simultaneously, by cover piece is pinned, see Fig. 2 and 3, this operating grip is also locked, and that is to say, can not have been touched, because it is positioned at the cover piece below and lining covers again.
In order to ensure, cover piece 2 only just can be placed in its off-position under the power switch situation that disconnects fully, and it is the structure of giving prominence on every side that this lever 3 is arranged to respect to it, that is guide element 3 and guiding adapter 10 that it protrudes in basin shape are provided with.This cover piece 2 has a groove 22, and it is set to ridge structure on the cover piece upper side, in the illustrated embodiment, is set to the groove of channel shaped.It is enough big that the size of this groove is wanted, so that make operating grip 3 just in time can snap in or be placed in this groove.The structural arrangements of groove 22 in cover piece 2 is so to realize, promptly when cover piece covers by flange 4, place its open position when this operating grip, it is corresponding to the power switch that disconnects fully, that is under the contact situation of not melting welding, this operating grip 3 just can be placed in this groove 22, correspondingly, this groove 22 is set to the groove of plough groove type, and it extends in the position of open position with operating grip 3 with paralleling.As can finding out from Fig. 2 and 3, cover piece 2 has only when operating grip 3 is accurately in the groove 22 of holding on cover piece, just can be placed in its off-position of describing in the drawings.This point have only when switch fully be disconnected that is, operating grip 3 places when disconnecting a position, by to groove 22 on cover piece structure and the configuration of geomery could realize.In favourable organization plan, this groove 22 has only the width that allows operating grip just snap in, but its length, but so long, that is on the total length of cover piece, construct, therefore, operating grip not only can be received when the position of describing, and also can be received when the position that turns over 180 °.
As can be seen from Figure 1, cover piece 2 is provided with the front bulkhead 27 that side direction opposed bulkhead 20 opposite each other and will opposite opposed side with receiving member limit at its downside, and it removes setting 26 times with respect to arris before the cover piece.This bulkhead 20 and 26 by angle bulkhead 21 gauges, goes also to use angle bulkhead 21 gauges towards receiving member 5 equally in its folding corner region.These bulkheads 20,21,27 can realize with receiving member 5, and operating grip is comprised that the cylindrical shape guiding that this handle wherein can be installed takes over 10 fully outside relatively coverings, as long as this moment, cover piece is being covered with coverage mode on the operating grip.Under the state that console switch is covered by cover piece, it just can not be operated from the outside again.Like this, operating grip is just locked, and as can finding out from Fig. 2 and 3, this perforation slot 24 that is used for flange 4 is built into before the cover piece 2 between the arris 26 and bulkhead in front 27.This bulkhead 27 just can import when cover piece covers between the space between flange 4 and the guiding adapter 10.
In Fig. 2, described power switch and on the position of a safety position that prevents to connect and pinning with vertical view.This operating grip 3 places on its open position herein that is power switch is disconnected fully with contact melting welding does not take place.In the embodiment that originally describes, disconnection one position of operating grip 3 is chosen to be, and operating grip disposes with the swinging axle 52 of the receiving member 5 of cover piece 2 with its longitudinal axis Y with paralleling.As Fig. 2 with relevant Fig. 3 profile is found out, cover piece fully cover on the operating grip and the guiding of holding handle take over 10 above.Wherein, the part of the outstanding guiding adapter 10 of operating grip 3 then sinks in the groove 22 that constitutes in cover piece 2 and by it and covers.This groove 22 is set to such size and is configured on the cover piece, and promptly it only can hold this operating grip on the position of the operating grip that Fig. 2 and 3 describes.In the example that shows, groove 22 is set to the raised structures on the cover piece of being positioned at of channel shaped, its longitudinal axis Y configured in parallel same and operating grip, and this groove 22 has a width bigger slightly than the Breadth Maximum of operating grip.When the state that cover of cover piece 2 shown in Fig. 2 and 3, this bulkhead 20,21,27 will have guiding with receiving member 5 and take over 10 operating grip and live from each side-closed.Wherein, bulkhead rests on the housing upper surface of housing 6 at least in part or closely stretches and reaches on it.This bulkhead 27 is directed in the space that exists between guiding adapter 10 and the flange 4; This flange 4 is equipped with the slot 24 that the subregion of running through through hole 21 imported and ran through cover piece with it, in order that through hole 41 is positioned at the top of cover piece and after inserting padlock, cover piece 2 can be locked on the position that Fig. 2 and 3 describes.When pinning cover piece, operating grip 3 is locked under the cover piece side and therefore with being hidden, can not be again near implementation and operation.In this way, switch 1 is guaranteed to prevent to connect.
If but because short circuit current, the contact of this power switch 1 is during mutually by melting welding, then operating grip 3 can occupy a position that changes with respect to the position of above-cited operating grip under power switch 1 situation of opening.This position of operating grip 3 is depicted in the Figure 4 and 5.Since in power switch 1 contact of melting welding so, these contacts can not be opened again, and the spring action of operating grip 3 by brute force then is maintained at a direction along on-position and turns round on about 5 ° to 10 ° position in the inside of power switch 1.This phenomenon can be often observed in the power switch that has the rotatable handle of general merchandiseization.This position of rotating slightly with respect to the correct disconnection-position of operating grip 3 with its different results that cause in position when the power switch 1 that disconnects fully is, when cover piece 2 moves on the direction of its off-position, the part of outstanding operating grip 3 just no longer can be embedded in the groove 22 on the cover piece, but, collide with the gauge arris 22a of groove 22.Special as can be seen from Figure 5, cover piece 2 can not be placed in its off-position, and therefore, the through hole 41 that is used for padlock on flange 4 is with regard to no longer appearing at the upper side of cover piece 2, so power switch 1 can not be lockable.
When the effect of this cover piece 2 that can not be closed also appeared at operating grip or power switch certainly and places on-position, in the embodiment of this expression, corresponding was so position of the switch therewith, and promptly the embodiment of its relative Fig. 2 is rotated 90 °.
In addition, this operating grip 3 thereon on the side and at it facing on the arris of flange 4 and on opposite opposed arris, respectively be equipped with a kayser lip 32, they protrude in the upper side of operating grip 3.In addition, setting up an outstanding kayser arris 25 on the cover piece 2 and in facing toward on the gauge arris 22a of flange 4 of groove 22, it shown in Figure 4 and 5, can place with the kayser lip 32 of operating grip 3 to be connected for effect under the contact situation of power switch that disconnects and melting welding.Just can prevent in this way, operating grip 3 by be applied to pressure on the cover piece 2 of being put its upper side knock-on to its with the corresponding position of power switch that disconnects fully on, if not, although just may contact melting welding also can be pinned this power switch.The described power that is applied on the cover piece 2 is big more, then by connecting at kayser arris 25 on the cover piece 2 and the effect between the kayser lip 32, the effect component that is applied on the operating grip 3 is just big more, and it will make operating grip and open position be kept away from, thereby avoid manual operation.In order further to improve this effect, in addition, it is the structure that wedge shape rises that the kayser lip 32 of operating grip can be set to towards the outward flange of operating grip.According to this, the effect of above-mentioned effect connection will be enhanced.
As especially as can be seen from Figure 5, outstanding bulkhead 20,21,27 has so height on cover piece, promptly when cover piece 2 rests on the kayser lip 32 of operating grip 3, because the contact of the melting welding of power switch 1, bulkhead 20,21,27 is so covered operating grip 3 to degree, and promptly it can not have been reacceesed from the outside.Therefore impossiblely be, with a suitable object as a screwer make operating grip be fixed to its with the corresponding position of power switch of disconnection on; And cover piece 2 can not be positioned on the operating grip 3 of original correct location.Because these bulkheads have collided with described member and it is closed that cover piece 2 is continued in advance.
And under the situation of a switch 1 of locking and disconnect power, their contact is not by melting welding, shown in Fig. 2 and 3, thereby the manual operation to power switch 1 is prevented from, so connection work that can not the person of having no right, but the padlock of settling in the opening 41 of flange 4 has only could be near operating grip when being removed by the personnel that are correlated with, because, cover piece 2 and its go up settle and part stretch reach housing before the bulkhead on the side plate 6a 20,21 operating grip is surrounded.As can be seen from Figure 2, not only bolt 50, and bolt 43 is all fully covered and is locked in its make position by cover piece 2, the receiving member 5 that bolt 50 will be used for cover piece 2 is screwed in the housing 6 of power switch 1 admittedly, and bolt 43 then is screwed in flange 4 and its cover plate 44 on the housing 6 of power switch 1 together admittedly.Also have, housing and cover piece can not be opened on this position.So the installation or removal of these members only opening cover piece 2, that is to say, just may implement after the padlock of all through holes that places flange 4 41 removed.This flange 4 also covers a bolt 13b with its cover plate 44 formation one and that rest on the housing 6, by this bolt 13b front side board 6a is connected with remaining housing component 6 of power switch 1.Therefore, when locking, the housing 6 of power switch 1 can not be opened power switch 1; And then the work that the contact opened is overlapped again.Only after all padlocks were removed from the through hole 41 of flange 4, cover piece 2 just can be opened, and therefore, the bolt 43 of flange just can be approaching.And then flange 4 could be removed; Like this, the bolt 13b of housing 6 just can be approaching.Naturally, according to similar fashion also possible be, on receiving member 5, set up a corresponding cover plate, another bolt 13a that it will be arranged in the housing 6 in opposite opposed zone covers.
In order further to improve the steadiness of flange 4, this flange 4 is being provided with two outstanding pins 45 along its cover plate 44 on the side of housing 6, and it can be embedded into side plate 6a before the housing and go up in the corresponding grooves 11 and additional fixing to flange 4 is provided.In addition, this flange 4 is provided with ribs 40 at it on the side of operating grip 3, it can be embedded in the corresponding groove 23 of side bulkhead 27 before the cover piece 2 and can make cover piece better guide function of realization to its make position motion the time when cover piece 2 is closed.In this way, can set up so power switch 1, it can be in simple and cheap mode for example according to locking device that prevents to connect by the thermoplastic material manufacturing of Shooting Technique equipment, and they can be retrofitted on the power switch that has existed in addition as discharge cock.
The present invention realizes one to the only locking when opening contact fully of power switch, and, provide the safety that prevents others' manual operation attempt of a special high level, although so that also want to lock attempting of power switch when for example preventing contact melting welding.
Naturally, previously described the present invention does not limit on the embodiment that shows in the accompanying drawings, but can use the power switch of other versions.For example can expect that on the position of the operating grip of having described outstanding with respect to the zone around it, using one is not the operating grip outstanding with respect to the zone around it.In this case; cover piece has so correspondingly configured zone; it can be embedded in the other handle grooves that is provided with in case of necessity of operating grip and therefore have a groove between above-mentioned zone; operating grip only can import when disconnection-position in this groove; this and above-mentioned explanation are similar; and this position; operating grip just can occupy at the power switch of opening contact fully and when not having the contact of melting welding; therefore, just can when contact melting welding, realize preventing the insurance of connecting and preventing the protective effect that others is manual of hope.
Claims (12)
1, it is rotatable that settle and by pinning at least one padlock to prevent connecting insurable operating grip in housing that protection switch, particularly power switch or motor protecting switch have housing and one, it is characterized in that:
The cover piece (2) that operating grip (3) covered and pin by padlock of being used for enough sizes can be set on housing (6) with raising; A groove (22) of setting this operating grip (3) is set in cover piece (2); Wherein, this groove (22) positions according to the position of operating grip (3) when it is in disconnection-position under the situation that the contact of protection switch is opened fully; This operating grip (3) only just can be embedded in the groove (22) of cover piece (2) when its disconnection-position; This cover piece (2) only just can move to make position to pin by padlock when operating grip is in disconnection-position.
2, according to the described protection switch of claim 1, it is characterized in that:
The receiving member (5) of a folding paper is set on housing (6), and it has a swinging axle (52) to be used for the cover piece (2) on the operating grip that will cover (3) next door.
3, according to claim 1 or 2 described protection switches, it is characterized in that:
On the housing in operating grip (3) next door and with the opposite opposed side of receiving member (5) of band swinging axle (52) on a upright flange (4) is set; This flange (4) is provided with at least one through hole (41) to be used for each interspersed padlock; This cover piece (2) is provided with a slot (24) to allow when the off-position of cover piece (2) flange (4) intert in the past; Like this, the through hole (41) that is used for padlock on the flange (4) is positioned at the top of cover piece (2) when off-position.
4, according to the described protection switch of one of claim 1 to 3, it is characterized in that: be provided with the bulkhead (20,21,27) that stretches out on the side of cover piece (2) side (6a) before it is facing to operating grip (3) or housing; Cover piece (2) is lived operating grip (3) on each side when make position with extraneous packing.
5, according to the described protection switch of claim 4, it is characterized in that:
The bulkhead of cover piece (2) (20,21,27) is configured on the leading flank (6a) of housing (6) up to the small part mode in off-position.
6, according to the described protection switch of one of claim 2 to 5, it is characterized in that:
A backstop (51) is set to be used to making cover piece (2) when raising cover piece (2) be remained on the position of opening from operating grip (3) between receiving member (5) and cover piece (2).
7, according to the described protection switch of one of claim 3 to 6, it is characterized in that:
Flange (4) and the receiving member (5) that is used for cover piece (2) can be fixed on housing (6) by bolt; These bolts are covered by cover piece (2) when cover piece (2) off-position.
8, according to the described protection switch of one of claim 3 to 7, it is characterized in that:
This flange (4) has the cover piece (44) of at least one shaping one, and it rests on that housing (6) is gone up and covers to the bolt (13) of major general's housing (6).
9, according to the described protection switch of one of claim 3 to 8, it is characterized in that:
Upward and in through hole (41) top that padlock is used a kayser nose (42) is set at flange (4), it can realize a kayser effect that makes cover piece (2) in off-position.
10, according to the described protection switch of one of claim 1 to 9, it is characterized in that:
At least in facing toward on the upper edge of flange (4) of operating grip (3) a kayser lip (32) is set, it stretches out the upper side of operating grip (3); Upward and in facing toward on the gauge arris of flange of groove (22) a kayser arris (25) that stretches out is set at cover piece (2), like this, also can not opening under the protection switch situation of contact of disconnecting owing to the contact of melting welding, at this moment, what operating grip (3) was not in it opens connecting point position (disconnection-position), and this cover piece (2) is connected with the effect of entering of its kayser arris (25) and the kayser lip (32) of operating grip (3); And then prevent that operating grip (3) is turned back to and open connecting point position; Simultaneously, cover piece (2) just can not be by on the off-position that brings to it.
11, according to the described protection switch of claim 10, it is characterized in that:
That this kayser lip (32) is configured to stretch out from the upper side of operating grip (3) and go the structure that rises into wedge shape towards the outward flange of operating grip (3).
12, according to the described protection switch of one of one of claim 4 to 5 and claim 10 to 11, it is characterized in that:
The bulkhead of this cover piece (2) (20,21,27) has so height, so that the kayser lip (32) that rests on operating grip (3) at cover piece (2) is gone up and this operating grip when being in position outside its open position, this bulkhead (20,21) still covers operating grip (3) certain degree, like this, operating grip (3) still can not be by approaching from the outside.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19548948.9 | 1995-12-28 | ||
| DE19548948A DE19548948C2 (en) | 1995-12-28 | 1995-12-28 | Circuit breaker with actuating handle that can be secured against being switched on |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1208499A true CN1208499A (en) | 1999-02-17 |
| CN1065647C CN1065647C (en) | 2001-05-09 |
Family
ID=7781544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96199801A Expired - Fee Related CN1065647C (en) | 1995-12-28 | 1996-12-06 | Protected switch with a control grip securable against switching on |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0870313B1 (en) |
| CN (1) | CN1065647C (en) |
| AT (1) | ATE186610T1 (en) |
| DE (1) | DE19548948C2 (en) |
| HK (1) | HK1017482A1 (en) |
| WO (1) | WO1997024741A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395688B (en) * | 2006-03-02 | 2011-08-10 | 穆勒建筑物自动化有限公司 | Switching device |
| CN101681734B (en) * | 2007-04-20 | 2013-05-29 | Abb股份有限公司 | Installation switchgear having a lead-sealable actuation lever |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2463875A1 (en) | 2010-12-13 | 2012-06-13 | Eaton Industries GmbH | Closable manually activated rotary drive for electric switching devices |
| US8796568B2 (en) * | 2010-12-29 | 2014-08-05 | General Electric Company | Switching assembly having an interlock device for a selector switch |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1528692A (en) * | 1977-04-01 | 1978-10-18 | Holme Hall Quarries Ltd | Locking off device for electrical switch |
| FR2602889B1 (en) * | 1986-08-14 | 1988-11-10 | Telemecanique Electrique | DEVICE FOR THE SELECTIVE PROHIBITION OF ONE OR MORE MODES OF ACTUATING MANUAL CONTROLS EQUIPPED WITH AN APPARATUS |
| US4978816A (en) * | 1990-02-16 | 1990-12-18 | General Electric Company | Circuit breaker handle interlock arrangement |
| US5302925A (en) * | 1993-06-11 | 1994-04-12 | General Electric Company | Circuit breaker rotary handle operator with positive on indication |
| US5468925A (en) * | 1994-04-21 | 1995-11-21 | Mohsen; Jafar | Enclosure for an electrical switch |
-
1995
- 1995-12-28 DE DE19548948A patent/DE19548948C2/en not_active Expired - Fee Related
-
1996
- 1996-12-06 AT AT96943893T patent/ATE186610T1/en active
- 1996-12-06 EP EP96943893A patent/EP0870313B1/en not_active Expired - Lifetime
- 1996-12-06 CN CN96199801A patent/CN1065647C/en not_active Expired - Fee Related
- 1996-12-06 WO PCT/EP1996/005461 patent/WO1997024741A1/en active IP Right Grant
-
1999
- 1999-05-28 HK HK99102394A patent/HK1017482A1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101395688B (en) * | 2006-03-02 | 2011-08-10 | 穆勒建筑物自动化有限公司 | Switching device |
| CN101681734B (en) * | 2007-04-20 | 2013-05-29 | Abb股份有限公司 | Installation switchgear having a lead-sealable actuation lever |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1997024741A1 (en) | 1997-07-10 |
| EP0870313A1 (en) | 1998-10-14 |
| ATE186610T1 (en) | 1999-11-15 |
| DE19548948C2 (en) | 1999-10-21 |
| CN1065647C (en) | 2001-05-09 |
| DE19548948A1 (en) | 1997-07-03 |
| EP0870313B1 (en) | 1999-11-10 |
| HK1017482A1 (en) | 1999-11-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| FG4A | Grant of patent | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010509 Termination date: 20141206 |
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| EXPY | Termination of patent right or utility model |