CN201289830Y - Electrical installation switch device - Google Patents
Electrical installation switch device Download PDFInfo
- Publication number
- CN201289830Y CN201289830Y CNU2008200028280U CN200820002828U CN201289830Y CN 201289830 Y CN201289830 Y CN 201289830Y CN U2008200028280 U CNU2008200028280 U CN U2008200028280U CN 200820002828 U CN200820002828 U CN 200820002828U CN 201289830 Y CN201289830 Y CN 201289830Y
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- Prior art keywords
- lever
- contact
- bar
- switching device
- electric installation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/52—Manual reset mechanisms which may be also used for manual release actuated by lever
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The utility model relates to an electrical switch gear, in particular to a line protection switch. The electrical switch gear comprises a a magnetic circuit breaker provided with an armature iron, a thermal circuit breaker, a fixed contact, a movable contact, and a switch lock which can be tripped through the thermal circuit breaker and the magnetic circuit breaker. The switch lock comprises a release lever, and a connection point formed by a pawl rod which is rotationally and fixedly arranged and provided with a slotted hole guiding a camber member, wherein, the armature iron for breaking contacts under the short-circuit condition can act on a contact lever provided with a contacting piece, and the switch lock can permanently keep the contact lever in the breaking position. The electrical switch gear further comprises a switch button and an intermediate rod; the switch button is used for manipulating the switch lock manually; one end of the intermediate rod is hinged with the contact lever, and the other end thereof is hinged with the camber member; at least one leg part of the camber member is hinged with the switch button. The contact lever forms a first assembly assembled in a casing provided with the switch gear in a presetting manner; and the first assembly can be mounted on a rotating shaft fixedly connected with the casing in a swinging manner after being assembled in the casing. The switch button, the release lever, the pawl rod, the intermediate rod, and the camber member constitute a second assembly assembled in the casing in a presetting manner; and after being assembled in the casing, the second assembly is connected with the first assembly in the separating point in a hinged manner.
Description
Technical field
The utility model relates to a kind of electric installation switching device as described in the preamble, particularly line protection switch by claim 1.
Background technology
Such installation switching device has the contact point that is formed by the fixing contact with activity usually, and wherein, movable contact remains on the contact lever of settling swingably.In addition, such installation switching device comprises the magnetic circuit breaker that has armature, and is connected the switch lock of putting by having of thermal circuit beraker or magnetic circuit breaker dropout.This linking point be by the rotatable arrangement in ground of release lever and fixed-site and have the pawl bar that is used for slotted hole that camber member is led and form.Under the situation of short circuit, in order to disconnect contact point, armature can act on the contact lever with movable contact, and switch lock can remain on contact lever on the open position enduringly.In addition, such installation switching device comprises switching knob and intermediate bar, and switching knob is used for the manual control switch lock, intermediate bar is hinged with contact lever on the one end, and hinged with camber member on the other end, wherein, camber member is hinged with at least one shank and switching knob.
In such installation switching device, contact lever is by the contact pressure spring-loaded, this contact pressure spring so is directed on contact lever, make it on the on-position contact of activity is being pressed onto on the fixing contact, and on open position, the contact of activity is pushed open from fixing contact.
Here, intermediate bar is the coupling part between switching mechanism and contact lever.
On on-position, contact lever keeps by the intermediate bar that is blocked by switching mechanism.The switching mechanism that has been connected moves run-on point with first of contact lever and is stuck on the primary importance, thereby the contact pressure spring can be pressed in contact lever on the fixing contact around this first run-on point.
On release or open position, intermediate bar discharges from switching mechanism.This switching mechanism is threaded off and has been discharged first run-on point, is pressed into open position thereby the contact pressure spring can center on contact lever second run-on point of fixed-site, and on this open position, movable contact separates with the contact of fixing.
When thermal cut-out or short circuit current cut-out, switching mechanism is threaded off by heat or electro-magnetic circuit breaker by release lever, thereby this switching mechanism can carry out the transition to off-state from on-state.Because the cut-out by the switching mechanism of threading off is slower than what allowed when the fast shut-off owing to participate in the inertia of member, so when the electromagnetism fast shut-off, movable contact lever is additionally directly rushed open by armature, to disconnect contact point apace.
Such installation switching device is known, and in these switching devices, switching mechanism and contact lever can be assemblied between two plates with the form of precast segment and when assembling device as a whole in the charging apparatus.For switching mechanism is connected with thermal circuit beraker and/or magnetic circuit breaker, also need the dropout sliding part of packing into later on.EP 0144799 A1 shows an example.Here, because skew and inclination may take place in the manufacturing tolerance when the assembling plate between each rod member of switching mechanism.If contact lever is collided by high speed circuit breaker when short circuit is cut off, this contact lever bumps against on the block that is positioned at the plate scope so, and therefore, plate continues to relatively move, As time goes on, the gap between the skew rod member of switching mechanism may be too big for accurate function.The possibility of result is the shape and the positional stability of contact lever deficiency.In addition, quite complicated and because significantly tolerance and riveted joint connector and need make of the manufacturing of switching mechanism with expensive.
This structure should be applicable to full-automatic manufacturing, but it requires pin-point accuracy ground that part is supplied with and located, and this makes manufacturing automation become very complicated and expensive.
Summary of the invention
Therefore, task of the present utility model provides a kind of such installation switching device that meets, and this installation switching device not only can also can automatically be made with low cost by hand, has the high shape and the positional stability of contact in addition.
This task is that the such installation switching device by the feature of the characteristic with claim 1 is resolved.
According to the utility model, contact lever constitutes the first interior assembly of housing of the installation switching device of can packing into prefabricatedly, this assembly is placed in after the housing of packing on fixed-site ground and the rotating shaft that housing is connected swingably, and second assembly of switching knob in release lever, pawl bar, intermediate bar and camber member constitute the housing of can packing into prefabricatedly, this assembly is connected with first member hinges ground at the burble point place after packing into.This second assembly also is known as buckle chain below.
According to a kind of particularly advantageous execution mode of the present utility model, burble point is to be made of the tie point between the free end of free end of intermediate bar and contact lever.Here, this tie point for example can be made of the pin that forms on a free end of contact lever, and this pin embeds the hole on the free end that is located at intermediate bar.
These two assemblies can be made and pretest independently of each other.The function of the switch lock by will having contact lever is separated in two assemblies, and each assembly itself can design than comprising that in single component the assembly of repertoire is simpler.Therefore, each assembly in two assemblies of the present utility model can more simply and more reliably be made.Amalgamation is to carry out at the burble point place in housing.In order to obtain function, the housing of only need be when assembling two assemblies being packed into.This both can also can be undertaken by automatic maker with hand simply.Here, be insignificant to the requirement of automatic maker, because only need operate and locate to two assemblies, rather than a large amount of single parts.
According to a kind of particularly advantageous design of the present utility model, on open position, the movement locus of contact lever limits by the block that is connected with housing with abutting against fixed-site.When under the situation that short circuit occurring during by magnetic circuit breaker collision contact lever, the impact of this block absorbing contact bar.Therefore, switching mechanism itself can not be increased load by the impact of contact lever, can not deform or be offset between each rod member that constitutes switching mechanism, thereby obtain almost very close to each other and lasting accurate structure.
In the particularly advantageous execution mode of another kind, installation switching device of the present utility model comprises the collision bar in the axle that is placed in fixed-site swingably, and armature and thermal circuit beraker all act on release lever by this collision bar.Therefore this collision bar is set up thermal circuit beraker or magnetic circuit breaker and is had being connected between the switch lock that is connected point.Therefore, thermal circuit beraker and magnetic circuit breaker can be designed in the assembly separately and the housing of packing into independently of each other after pack into contact lever and buckle chain.
In a kind of particularly advantageous execution mode of the present utility model, collision bar can be a double-arm lever, wherein, in the particularly advantageous execution mode of another kind, armature and thermal circuit beraker act on first lever arm of collision bar and are swinging this lever arm as the time spent, thereby second lever arm of collision bar acts on the lever arm of release lever and swings this this lever arm, makes being connected a little between release lever and the pawl bar thread off.
In the switching manipulation that almost is each break contact, no matter be to be in the rated current load or under short-circuit conditions, on contact point, to occur electric arc in short time, this electric arc causes the part scaling loss a little on the movable and fixing contact.In the length of life of this installation switching device, therefore thickness of contact reduces.It is to descend by following of contact lever to compensating that thickness reduces, thereby even also exists good plane contact when the thickness of contact reduces between contact.But contact lever moves closely more towards fixing contact when following decline, and contact pressure is just more little, and this contact pressure then can make the contact pressure spring action to contact lever.Have such danger under the situation that does not have enough contact pressures, promptly the contact resistance in the contact point of closure becomes too big, thereby unallowed height heating takes place on contact point, perhaps or even a series of little sparkover.In order to prevent this situation, when being lower than the certain thickness of contact, contact lever is prevented from continuing to follow decline.
In known installation switching device, contact designs very thickly and therefore over dimensioning, perhaps contact lever follow that to descend be that length by slotted hole limits, contact lever is placed in this slotted hole on second rotating shaft of fixed-site.Under the linking state, promptly when contact lever was pressed onto on the fixing contact around first run-on point, the second fixing rotating shaft was positioned at the interior zone of slotted hole.The thickness of contact becomes more little, and the end of slotted hole is the closer to the second fixing rotating shaft.When the second fixing rotating shaft abutted against the edge of slotted hole at last, it no longer was possible on the fixing contact that contact lever is continued to be pressed to, and was stopped and follow to descend.Yet, abut against on the edge of slotted hole by the second fixing rotating shaft, just seized contact pressure, thereby in following the just in time also reliable scope of decline, contact pressure is reduced.On the other hand, because the manufacturing tolerance when the punching press slotted hole, the restriction point of following decline departs from each device mutually.
In order to improve this situation, in installation switching device of the present utility model, in the particularly advantageous execution mode of another kind, it is that block by fixed-site limits that contact lever descends towards following of fixing contact.In a kind of particularly advantageous execution mode, this block can be made of case protrusion.This block also can be by independent, but fixed-site ground and with shape connect or or even the installed part that is connected with housing of material ways of connecting realize.The block of the utility model by fixed-site limits the advantage of following decline and is: do not lose contact pressure and the confine that can realize improving from a repeatability of installing another device.According to the utility model, from slotted hole, seized the restriction of following decline and it has been distributed to independent parts, i.e. block.Therefore, this block can be optimized at its unique function on its position and execution mode, thereby installation switching device of the present utility model has the performance of improvement generally.
In a kind of particularly advantageous execution mode of the present utility model, the position of block in device so is consistent with the movement locus of release lever, so that contact lever can not hinder the swing of release lever on abutting block the time.
Other favourable designs of the present utility model and improvement project and other advantages can draw from dependent claims.
Description of drawings
By the accompanying drawing that embodiment of the present utility model is shown, explain and describe the utility model and other favourable design and improvement projects of the present utility model.
Fig. 1 shows the internal view of installation switching device of the present utility model when contact point disconnects;
Fig. 2 shows the internal view as Fig. 1 under the manufacturing state that is in the buckle chain of not packing into as yet;
Fig. 3 shows the internal view of installation switching device of the present utility model when contact point is closed;
Fig. 4 shows the explosive view of buckle chain;
Fig. 5 shows the buckle chain as Fig. 4 that assembles;
Fig. 6 a-d shows each installation step when packing release lever into switching knob;
Fig. 7 shows the schematic diagram of following decline by the stop limits contact lever of fixed-site; And
Fig. 8 shows the acting in conjunction of collision pin and collision bar and the schematic diagram that the collision pin directly acts on contact lever.
Embodiment
Now at first referring to Fig. 1 to 4.
Total installation switching device of representing with Reference numeral 10 is line protection switch here, has a housing, and this housing is made up of two housing half shells, wherein, first housing, half shell 11 is shown partly.This housing half shell 11 equally has face wall behind a preceding face wall 12 and two with unshowned second housing, half shells that replenish, wherein, face wall 13 after in Fig. 1, can only seeing one, face wall interconnects by front side wall behind this preceding face wall and two, in these sidewalls, can only see a front side wall 14 in the drawings.In addition, belong to the back narrow sidewall of housing, fastening and wide that reaches housing is sightless in the view of Fig. 1.
Certainly also have such possibility, promptly only use housing half shell, this housing half shell seals by cover piece.Under the situation that is provided with two housing half shells, the width of each housing half shell is equivalent to the standard module width of half.Under the situation of unique housing half shell by the cover piece sealing, this housing half shell correspondingly has such size, and this size is so selected, and makes it reach module width with cover piece.
Be provided with hole 17 in preceding face wall 12, the control crank 18 of switching knob 19 passes this hole and stretches out.Switching knob 19 has the hole of the virtual rotating shaft that can regard switching knob as.Be provided with the protuberance 21,22 that is the formation of fork-shaped ground on a side radially relative with control crank 18, wherein, it is visible having only a protuberance 21 in the view of Fig. 1.Can see that in the stereogram of Fig. 6 d two are the protuberance 21,22 that fork-shaped ground forms.These two protuberances 21,22 are reserved the spatial accommodation 23 of one-sided opening between them.In two protuberances 21,22 each all has eyelet 24,25 on the end of control crank 18 dorsad at it.The longitudinal central axis line of control crank 18 extends through the center of eyelet 24,25.
A shank 26 of U-shaped camber member 27 embeds in the eyelets 24 with its guiding extension 28, as among Fig. 4 in detail shown in.In the eyelet 25 of second shank 29 of camber member 27 with second protuberance 22 of its guiding extension 128 flush switch knobs 19.
The camber member connecting portion 30 that connects two U shanks 26,29 embeds in two bayonet sockets 31,32 of intermediate bar 33.For this reason, intermediate bar 33 has the U-profile on its a end, and the end of this U-profile is two and is the protuberance 34 that fork-shaped is arranged, 35, wherein, these two are the protuberance 34 that fork-shaped is arranged, each protuberance in 35 is gone up endways has a bayonet socket 31,32 respectively.
Simultaneously, camber member connecting portion 30 embeds in the slotted hole 36 of pawl bars 37 and passes this slotted hole, and this pawl bar is arranged on below and part extension in two U type spaces that are positioned between the terminal protuberance 34,35 of intermediate bar 33 of intermediate bar 33.Therefore, the camber member 27 of U-shaped is directed in the slotted hole 36 of pawl bar 37 with its camber member connecting portion 30, simultaneously, intermediate bar 33 by its bayonet socket 31 and 32 and camber member connecting portion 30 hinged.Therefore, switching knob 19, intermediate bar 33 and pawl bar 37 constitute by camber member 27 interconnective assemblies.
On pawl bar 37, form axle journal 38 respectively in both sides, 39, by these axle journals, this pawl bar fixed-site and being placed in rotationally in two housing half shells in the housing of two halves shell, perhaps fixed-site and being placed in rotationally in housing half shell and the cover piece in the housing of list half shell with cover piece.
The longitudinal extension direction of the shank 26,29 of intermediate bar 33, pawl bar 37 and camber member 27 is parallel to wide of device case.
On the annular end face of looping pit 42, has retainer lug 45 on the first arm 41 of release lever 40.Release lever 40 inserts the spatial accommodation 23 between the protuberance 21,22 of two fork-shapeds that are positioned at switching knob 19 with its first arm 41, thereby the axis of its looping pit 42 overlaps with the axis in the hole of switching knob 19.Here, the hole of control crank is positioned on the flange 120 that surrounds looping pit 42, and it remains on this flange rotationally.Release lever 40 remains on the axle 20 swingably, and switching knob 19 remains on the release lever 40 swingably.
By this way, release lever 40 adds on the assembly that constitutes by the connection by camber member 27 of switching knob 19, intermediate bar 33 and pawl bar 37.
Pawl bar 37 has lug 49 on its free end, this lug is with the linking point that constitutes switch lock at the stop surface on the release lever 40 44 on the cohesive position of release lever 40.Fig. 3 shows the line protection switch 10 that comprises the switching mechanism that has been connected.On cohesive position, release lever 40 in the view of Fig. 3 deasil towards the swing of the direction of pawl bar 37.
Therefore, release lever 40, switching knob 19, intermediate bar 33 and pawl bar 37 constitute be connected can be prefabricated assembly, this assembly also is known as buckle chain 50 below.This buckle chain 50 can be used as independent combiner and carries out prefabricated and pretest.
Referring now to Fig. 4,, shows each step when the assembling buckle chain with the form of explosive view in the drawings.In the first step that marks with arrow P 1, the shank 29 of camber member 27 is passed slotted hole 36, thereby camber member connecting portion 30 is directed movably in slotted hole 36, and pawl bar 37 extends between two shanks 26,39 of camber member 27.In second step that marks with arrow P 2, intermediate bar 33 is positioned at terminal bayonet socket 31 with it is clamped on the camber member connecting portion 30, terminal protuberance 34,35 hides and encirclement pawl bar 37 thereby it is positioned at.In the third step that marks with arrow P 3, with camber member 27 with it in the eyelet 24,25 that the guiding extension that forms on the end of shank 26,29 28,128 embeds on the protuberance 21,22 that is located at switching knob 19.At last, in the 4th step that marks with arrow P 4, the release lever of the spring assembly 46 of packing into is in advance within it inserted switching knob 19 be in the spatial accommodation 23 between the protuberance 21,22 that fork-shaped is provided with and and be stuck in this spatial accommodation it.
Fig. 6 a to 6d shows other details of spring assembly 46 and assembling buckle chain 50.Here, spring assembly 46 is helical springs, and this spring is pulled on the outer peripheral face of movable joint head in the zone of the free-ended movable joint head of the first arm 41 of release lever 40.The movable joint head have big about the middle part on its outer peripheral face around flange 51, this flange is as the helical spring backstop of spring assembly 46.Extend the cover-up surface that is designed to hull shape 52 of the end face that points to the movable joint head from flange 51, thereby between the outer peripheral face of movable joint head and cover-up surface 52, be formed for holding the also gap of guide springs device 46.The end face of cover-up surface 52 extends end face up to looping pit 42 in the mode on inclined-plane 53 from the stop edge of flange 51, and ends at a undercutting there, thereby is formed for the maintenance otch 54 of the spring arm 47 of spring assembly 46.
Shown in Fig. 6 a, spring assembly 46 is pulled on the outer peripheral face of looping pit 42, thereby the spring arm that stretches out 48 remains in another undercutting on the first arm 41 of release lever 40.In lax spring assembly 46, second spring arm 47 that stretches out and first spring arm 48 that stretches out roughly meet at right angles.For preloading spring device 46, second spring arm 47 that will stretch out is 53 swings clockwise along the inclined-plane, are stuck in up to it to keep in the otch 54.Now, spring assembly 46 is by pretension.According to the view of Fig. 6 c, the release lever 40 that will comprise the spring assembly 46 of pretension now pushes in the spatial accommodation 23 between two protuberances 21,22 of switching knob 19, and second spring arm radially stretches out from the spring assembly of this pretension for 47 this moments.Simultaneously, second spring arm 47 that stretches out is supported on switching knob 19 on the middle interconnecting piece 55 that extends between two protuberances 21,22.
Therefore, buckle chain 50 has assembled, and its each part hingedly interconnects, and release lever 40 by spring assembly 46 by pretension on its cohesive position.
Refer again to Fig. 1 now.Intermediate bar 33 has hole 60 on the end of camber member 27 dorsad at it.On this hole, intermediate bar hingedly is connected with contact lever 62 by columniform pin 61.
The first bar portion 64 has the U-shaped profile, this profile comprises the spatial accommodation 67 that is formed by the shank that roughly extends in parallel with the wide face of housing, this spatial accommodation opens wide towards the direction of front side wall 14, and have the hole on the shank of this spatial accommodation, thereby spatial accommodation 67 can enter from the wide face of housing half shell that separates in the housing of opening.
The second bar portion 65 has movable contact 68 on its free end.
In design shown in Figure 1, contact pressure spring 69 deasil pushes contact lever 62 around the axle 63 of fixed-site, thereby contact 68 that should activity is pushed open from fixing contact 70, and this contact pressure spring is supported on its end on the front side wall 14 of housing and is supported in the spatial accommodation 67 of the first bar portion 64 with its other end.Here, the movement locus of contact lever 62 is to limit by the block 71 that fixed-site ground is connected with first housing, half shell, and in other words, on off-position, contact lever 62 abuts against on the block 71 of fixed-site.The block 71 of fixed-site is to realize that by the pin that is connected with housing half shell one this pin for example can be made with housing half shell in injection moulding process.
Referring now to Fig. 3.Show the line protection switch that is in on-position here.Control crank 18 is positioned at on-position, and the lug 49 on the pawl bar 37 is connected with stop surface 44 on the release lever 40.Therefore, intermediate bar is stuck, and the pin 61 on the tie point between buckle chain 50 and the contact lever 62 constitutes the rotating shaft of contact lever 62 now.Around this rotating shaft 61, contact pressure spring 69 pushes contact lever 62 widdershins, thereby has guaranteed contacting between movable contact 68 and the contact of fixing 70.
Can see the coil 72 of magnetic circuit breaker 73 in addition, the metal tape of being made up of thermo bimetal or marmem 74 is as the part of thermal circuit beraker 75.In layout as shown in figs. 1 and 3, contact lever 62 and the contact point that is made of movable and fixing contact 68,70 are between magnetic circuit breaker 73 and thermal circuit beraker 75.In other words, magnetic circuit breaker 73 and thermal circuit beraker 75 are positioned at not homonymy about an imaginary plane that extends through contact lever 62, and this plane is perpendicular to first housing, half shell 11.
Under the cut-out situation, magnetic circuit breaker 73 or thermal circuit beraker 75 should disconnect by being located at the lug 49 on the pawl bar 37 and being located at the linking point that the stop surface 44 on the release lever 40 constitutes, thereby switch lock is threaded off thus, and contact lever 62 can transit to open position shown in Figure 1 by contact pressure spring 69.For this reason, it is necessary magnetic circuit breaker mechanically being connected with release lever 40 with thermal circuit beraker.In the utility model execution mode as shown in figs. 1 and 3, magnetic circuit breaker 73 or thermal circuit beraker 75 are to realize by the collision bar 77 that fixed-site ground is settled rotationally with the mechanical connection of release lever 40.
For this reason, the collision bar 77 that is designed to double-arm lever be placed in swingably that another root fixed-site ground is connected with housing half shell 11 spools 76 on.
Second shank of transmission camber member 80 is directed in the guide groove 81 of housing movably.Here, the sidewall 82 of guide groove 81 designs so deeply and transmission camber member 80 correspondingly designs so longly, so that when the metal tape 74 of thermal circuit beraker 75 at adstante febre along direction of arrow R, when promptly here being crooked widdershins, it can cross the sidewall 82 of guide groove 81 and meanwhile on second shank direction along arrow R spur transmission camber member 80 together.
By pulling, transmission camber member 80 is pendulum impact bar 77 deasil, therefore this collision bar so acts on release lever 40 with its second arm 83, so that this release lever is swung widdershins along the direction opposite with the power of spring assembly 46, thereby stop surface 44 separates from lug 49, and then the linking point is threaded off.
Corresponding situation when cutting off, magnetic takes place.Occurring under the situation of short circuit current, the collision pin that is driven by magnetic circuit breaker stretches out and collides first arm 78 of collision bar 77 on the hole on the end face of collision bar 77 at magnetic circuit breaker 73.Because this collision pin collides from right to left, thereby its also pendulum impact bar 76 deasil, thereby be connected point so threaded off.
In addition, collision bar 76 has lug 84, and this lug is outstanding towards the direction of the second bar portion 65 of contact lever 62.If collide pin pendulum impact bar 77 deasil when magnetic cuts off now, so lug 84 be connected that point collides contact lever 62 after threading off and with this contact lever collision extremely at open position shown in Figure 1.Here, movable contact 68 separates with the contact of fixing 70, wherein, has produced electric arc, and this electric arc is eliminated in arc-control device, and this arc-control device is here represented with Reference numeral 85 in the drawings and just partly illustrated.In known manner, this arc-control device comprises that the arc extinguishing board with precombustion chamber is folded, and this precombustion chamber can limit abreast by precombustion chamber cover plate and the wide face of housing, and electric arc is directed to this precombustion chamber by two electric arc guide rails.
Here, the collision movement of contact lever 62 is that block 71 by fixed-site limits.
The advantage that block 71 by fixed-site limits is: the impact that is delivered on the contact lever 62 from the collision pin is absorbed by housing, rather than is absorbed by the part of switch lock.Therefore, avoided the excessive mechanical load of switch lock part, thereby the switch lock part can not taken place equally by distortion and the skew that load causes, and relative layout and the position of each part of switch lock remains on within the required narrow margin of tolerance of reliable functioning.Especially, therefore guaranteed to limit and adjust exactly the contact break distance, and this contact break distance passing in time can be owing to mechanical deformation changes.
Switch lock, contact lever 62, thermal circuit beraker 75 and collision bar 77 with contact point, be that nearly all mechanical activity part is arranged in the first half chambeies of housing together, this first half chamber extends to a leptoprosopy of housing from an imaginary plane of mid point that vertically extends through the axle 20 of switching knob 19 with the wide face of housing.Be mounted with arc-control device 85 and magnetic circuit breaker 73 in another half chamber of housing, this another half chamber extends to relative housing leptoprosopy from above-mentioned imaginary plane.
On on-position, see Fig. 3, first arm 78 of transmission camber member 80 and collision bar 77 forms about 90 ° angle.Second arm 43 of release lever 40 forms about 90 ° angle equally with second arm 83 of collision bar 77.In addition, the length of first arm 78 of collision bar 77 and second arm 83 about equally.She Ji lever arrangement has guaranteed especially effectively from the metal tape 74 of thermal circuit beraker 75 via the power transmission to release lever 40 of transmission camber member 80 and collision bar 77 like this, because because lever transmission ratio and the right angle of the 1:1 that exists, pulling force is not delivered on the release lever 40 from transmission camber member 80 with reducing.
Referring now to Fig. 2.Described an installation step there, in this step, contact lever 62 has been packed into contact pressure spring 69 in the housing, but buckle chain 50 is not packed into as yet.This assembling is to carry out as follows: contact lever 62 is hinged on the axle 63 of fixed-site with its slotted hole.The contact pressure of packing into then spring 69.Here, useful is that the first bar portion 64 of contact lever 62 has the hole on a shank of its U-shaped profile.Therefore, contact pressure spring 69 can vertically be packed in the spatial accommodation 67 of the first bar portion 64 with simple mode and the wide face of housing, and this makes automatic assembling become easy especially.In case side, contact pressure spring 69 is supported on the wedge shape projection 86 that is positioned on the front side wall 14, wherein, supporting surface 87 is selections like this with respect to the inclination of front side wall 14, making that this supporting surface is approximate on the on-position of contact lever is parallel to a connecting portion of the first bar portion 64 and extends, contact pressure spring 69 is in the contact lever side, be supported on this connecting portion, so contact pressure spring 69 is extending between front side wall 14 and contact lever 62 on the on-position of contact lever 62 to a great extent linearly.Therefore, guarantee from contact pressure spring 69 to contact lever 62 good power transmission, and then guaranteed the high contact pressure on contact point.
In installation step shown in Figure 2, contact lever is pressed onto on the block 71 with its second arm 65 by contact pressure spring 69.Therefore, contact lever 62 is positioned on clearly that determine and the stable position.This is important, because this feasible buckle chain 50 of packing into as next installation step becomes easy.Now, the buckle chain 50 of so packing into makes it hingedly and swingably be placed on the one hand on the axle 20 of fixed-site, and hingedly and swingably is placed on the pin 61 of contact lever 62 by the hole 60 of intermediate bar 33 in addition.By the position that contact lever is clearly determined, particularly in assembling automatically, this installation becomes very easy.
After the buckle chain 50 of packing into, also collision bar 77 to be arranged at last on the axle 76 of fixed-site, and transmission camber member 80 embeds the hole 79 on first arm 78 that is positioned at collision bar 77 with its first shank, and in the guide groove 81 that is connected with housing regularly with its second shank embedded location.
Therefore, generally speaking, installation switching device of the present utility model design very easy assembling.By particularly when under short-circuit conditions, colliding contact point, very big impact on from the contact lever to the buckle chain is avoided, buckle chain can be made by plastic part up to spring assembly 46, and these plastic parts can link together and clamping mutually in simple mode.There is no need as still needing in the comparable device in the prior art, to be provided with screw thread, soldering, melting welding or riveted joint connector.
Referring now to Fig. 7.Here show a kind of deformation program of installation switching device of the present utility model in the mode of schematic diagram, in this deformation program, at fixing and/or movable contact 168, under the situation that 170 thickness reduces greatly owing to scaling loss, contact lever 162 is to limit by the block 90 that fixed-site ground is connected with housing half shell 111 towards the decline of following of fixing contact 170.Block 90 is designed to make in an injection moulding process with every other housing formation part in case protrusion outstanding on the corresponding position and when making housing half shell with injection moulding process in the inner space of housing.This block also can be by independent, but fixed-site ground and with shape connect or or even the installed part that is connected with housing of material ways of connecting realize.
With Reference numeral 162,168,170 are illustrated in contact point when closed and not have because the contact lever under the situation that the thickness that scaling loss causes reduces, movable contact and the contact of fixing.Use Reference numeral 162a, 168a, 170a and dot when contact point is closed and because the contact lever under the situation that the thickness that scaling loss causes reduces, movable contact and fixing contact.Can see that under the situation of contact lever 162a serious scaling loss when contact point is closed, the place of more close collision bar 177 does not have scaling loss.By the contact lever 162a that exists the then distance greatly with the front side wall 114 of housing, the contact pressure of contact pressure spring (not shown in Fig. 7) reduces.By block 90, the decline of following of contact lever 162a is limited to such numerical value, in these numerical value, has still guaranteed sufficiently high contact pressure by the contact pressure spring always.When scaling loss that also will be bigger, contact point can not be closed again, must change switching device.Therefore, such situation can not occur, promptly switching device in use though its contact point is closed, does not have enough big contact pressure.Because in this case, the contact resistance of rising on contact point, can occur, be accompanied by the danger of the unallowed height heating of the switching device that meanwhile takes place.
The contact pressure spring unhinderedly acts on contact lever, up to abutting against on the block.Limiting the advantage of following decline according to the block of the utility model by fixed-site is: do not lose contact pressure and the confine that can realize improving from a repeatability of installing another device.
Here, the position of block 90 relative collision bar 177 is such selections, even make when contact lever 162a abuts against on the block 90, the enough big collision distance 92 of existence between the lug 184 on the collision bar 177 in contact lever 162a and the axle 176 that is being placed in its fixed-site swingably.Here, collision distance 92 is so big, so that under the situation of thermal cut-out, when being positioned at hole 179 on the collision bar 177 at the transmission camber member along the pulling of the direction of arrow P 1, collision bar 177 deasil can also be swung enough far along the direction of arrow P 2, so to act on release lever 140, make release lever to swing widdershins, with the linking point of the lock of cut-off switch thus along the direction of arrow P 4.
In a kind of deformation program, collision bar 177 also can be designed to separate with wide parallel imaginary plane of housing along one.So, the inside part towards housing half shell 111 just is equivalent in the part shown in Fig. 7 177.This part has lug 184, under the situation that magnetic cuts off, the collision pin 173 of magnetic circuit breaker 73 along the directive effect of arrow P 5 in this part.In this deformation program, lug 184 can directly abut against on the contact lever 162a then, and needn't observe collision distance.Can assign to realize that this exterior portion has the collision distance 92 that needs and can partly swing or arrangement movably with respect to the inside of collision bar by the external of collision bar with the mechanical connection of thermal circuit beraker.Just under the situation of thermal cut-out, allow collision bar to cause swing by the transmission camber member that is engaged in the hole 179, collision distance is only essential.Here, the inside part of collision bar and exterior portion can act on release lever 140 by its their second arm, with the linking point of cut-off switch lock when cutting off.
The advantage that comprises this deformation program of separated collision bar is: under the situation that magnetic cuts off, the collision contact point carries out sooner, because collision bar 177 needn't be crossed collision distance 92 more earlier, with collision contact lever 162 or 162a.
But do not have pictorial another kind of deformation program to be: 177 of collision bar with the Motion Transmission of the collision pin 173 of magnetic circuit breaker 73 on contact lever 162 or release lever 140, on the contrary, the transmission of the motion of thermal circuit beraker is to be directly delivered to release lever by the transmission camber member to realize, that is to say not having under the middle situation about connecting of collision bar, as not having with respect to Fig. 1 to 3 in other respects in the layout of variation at buckle chain and contact lever.In this deformation program, the transmission camber member is no longer as the pull camber member, but the pushing camber member.In this deformation program, thermal circuit beraker is design like this, makes it in the direction bending of adstante febre towards contact point.In the execution mode shown in Fig. 1 to 3, the metal tape 74 of thermal circuit beraker 75 at adstante febre towards the direction bending of leaving contact point.
Fig. 8 shows another deformation program of the mechanical connection of thermal circuit beraker 75 or magnetic circuit breaker 73 and release lever.There, the collision contact point is that direct collision pin 373 by circuit breaker 273 carries out, and does not detour via collision bar 277.But here, being connected a dropout by release lever 240 also is to carry out under the condition that connects in the middle of the collision bar 277.Therefore, obtained under short-circuit conditions, to disconnect very fast and directly contact point.
Then, collision pin 373 continues motion driving under the condition of collision bar 277, collides contact lever 262 and contact lever is deasil banged into open position along the direction of arrow P 3 up to it.
Under the situation of thermal cut-out, the transmission camber member 280 that moves through of the metal tape of thermal circuit beraker is delivered on the collision bar 277 and similarly converts the clockwise swing of collision bar to along the pulling direction of arrow P 2.In this case, collision bar 277 does not have the lug towards contact lever 262, because as in aforesaid other execution modes, this lug just is used for also contact lever being collided by collision bar.
Description of reference numerals:
10 line protection switch
11,111,211 first housing half shells
12 front face wall
13 rear face wall
14,114 front side walls
17 holes
18 control cranks
19 switching knobs
The axle that 20 positions are fixing
21 protuberances
22 protuberances
23 spatial accommodations
24 eyelets
25 eyelets
26 shanks
27 camber members
28,128 guiding extensions
29 shanks
30 camber member connecting portions
31 bayonet sockets
32 bayonet sockets
33 intermediate bars
34 protuberances
35 protuberances
36 slotted holes
37 pawl bars
38 axle journals
39 axle journals
40,140,240 release levers
41 the first arms
42 looping pits
43 second arms
44 stop surfaces
45 retainer lug
46 spring assemblies
47 spring arms
48 spring arms
49 lugs on pawl bar
50 buckle chains
51 flanges
52 cover-up surfaces
53 inclined-planes
54 keep otch
55 middle interconnecting pieces
60 holes
61 pins
62,162,162a, 262 contact levers
63
64 first bar portions
65 second bar portions
66 slotted holes
67 spatial accommodations
68,168, the contact of 168a activity
69 contact pressure springs
70,170, the contact that 170a is fixing
71 blocks
72 coils
73,173,273 magnetic circuit breakers
74 metal tapes
75 thermal circuit berakers
The axle of 76,176 fixed-site
77,177,277 collision bar
78,278 first arms
79,179 holes
80,280 transmit camber member
81 guide grooves
82 sidewalls
83,283 second arms
84,184,284 lugs
85 arc-control devices
86 wedge shape projectioies
87 supporting surfaces
90 blocks
92 collision distances
173,373 collision pins
120 flanges
121 holes
284 holes
285 through holes
290 second blocks
374 flanges
Claims (22)
1. electric installation switching device; line protection switch particularly; this electrical switchgear comprises that one has the electro-magnetic circuit breaker of armature; one thermal circuit beraker; one fixing and a contact activity; one can be by the switch lock of thermal circuit beraker and magnetic circuit breaker dropout; this switch lock comprises by rotatably settling and have a linking point that the pawl bar of the slotted hole that is used to guide camber member forms in release lever and fixed-site ground; wherein; the armature that is used for disconnection contact point under short-circuit conditions can act on the contact lever with movable contact; and switch lock can remain on contact lever on the open position enduringly; this electrical switchgear also comprises switching knob and intermediate bar; this switching knob is used for master cock lock manually; this intermediate bar is hinged with contact lever on the one end; and it is hinged with its other end and camber member; wherein this camber member is hinged with at least one shank and switching knob; it is characterized in that; described contact lever constitutes the one first interior assembly of housing of the installation switching device of can packing into prefabricatedly; this assembly is placed in after in the housing of packing on fixed-site ground and the rotating shaft that housing is connected swingably; and described switching knob and release lever; pawl bar; intermediate bar and camber member constitute one second assembly in the housing of can packing into together prefabricatedly; this assembly is connected with first member hinges ground at the burble point place after packing into.
2. electric installation switching device as claimed in claim 1 is characterized in that, on open position, the movement locus of described contact lever can limit by abutting against on fixed-site ground and the block that housing is connected.
3. electric installation switching device as claimed in claim 1 or 2 is characterized in that, described burble point is to be made of the tie point between the free end of free end of intermediate bar and contact lever.
4. electric installation switching device as claimed in claim 3 is characterized in that described camber member has the U-shaped shape, and comprises camber member connecting portion that connects two U shanks and the guiding extension that forms on the free end of U shank.
5. electric installation switching device as claimed in claim 4 is characterized in that, described camber member connecting portion is directed in the slotted hole of pawl bar movably.
6. electric installation switching device as claimed in claim 5, it is characterized in that, described switching knob and control crank radially relatively have two and are the protuberance that fork-shaped forms, these two protuberances are reserved the spatial accommodation of one-sided opening between them, wherein, the guiding extension that is keeping a described camber member in each in these two protuberances.
7. electric installation switching device as claimed in claim 6, it is characterized in that, described intermediate bar has the U-profile on its end relative with burble point, the end of this U-profile is two and is the protuberance that fork-shaped is arranged, and these two each protuberance that is in the protuberance 34,35 that fork-shaped arranges have the bayonet socket that is positioned on the end.
8. electric installation switching device as claimed in claim 7 is characterized in that, described intermediate bar is hinged by described bayonet socket and camber member connecting portion, and surrounds pawl bar with its fork-shaped protuberance.
9. electric installation switching device as claimed in claim 8 is characterized in that, the first arm of described release lever in the rotating shaft of switching knob with the hingedly interlock and surrounded of this switching knob by two fork-shaped protuberances of switching knob.
10. electric installation switching device as claimed in claim 9 is characterized in that, forms the axle journal that is designed to extension in both sides on pawl bar, and this pawl bar is placed in two housing half shells by these axle journals.
11. electric installation switching device as claimed in claim 1 is characterized in that, this switching device comprises the collision bar that can swingingly settle in the axle of fixed-site, and armature and thermal circuit beraker all act on release lever by this collision bar.
12. electric installation switching device as claimed in claim 11 is characterized in that, described collision bar is a double-arm lever.
13. electric installation switching device as claimed in claim 12, it is characterized in that, described armature and thermal circuit beraker act on first lever arm of collision bar and are swinging this first lever arm as the time spent, thereby second lever arm of collision bar acts on the lever arm of release lever and swings this this lever arm, makes being connected a little between release lever and the pawl bar thread off.
14. electric installation switching device as claimed in claim 11, it is characterized in that, described collision bar (77,177) be designed to separate with wide parallel imaginary plane of housing along one, thereby magnetic circuit breaker (73) acts on the first that collision bar (177) is positioned at the inside when magnetic cuts off, and thermal circuit beraker acts on the second portion that collision bar (177) is positioned at the outside when thermal cut-out.
15. electric installation switching device as claimed in claim 11 is characterized in that, the swing route of described collision bar (77,177) can limit by second block (290) of fixed-site.
16. electric installation switching device as claimed in claim 13, it is characterized in that, described thermal circuit beraker is connected with collision bar by the pull camber member, and on the make position of contact lever, second arm of release lever roughly extends abreast with the pull camber member, and second arm of collision bar and pull camber member and release lever roughly meets at right angles respectively.
17. electric installation switching device as claimed in claim 16 is characterized in that, described armature bumps against collision bar on the contact lever, to collide contact point apace.
18. electric installation switching device as claimed in claim 16 is characterized in that, described armature at first swings to collision bar on the release lever when cutting off, and bumps against then on the contact lever, to disconnect contact point.
19. electric installation switching device as claimed in claim 12, it is characterized in that, described armature acts on first lever arm of collision bar and is swinging this first lever arm as the time spent, thereby second lever arm of collision bar acts on the lever arm of release lever and swings this this lever arm, make being connected a little between release lever and the pawl bar thread off, and described thermal circuit beraker directly acts on release lever by the pushing camber member so that the dropout of linking point perhaps acts on second lever arm of collision bar so that its swing by the pushing camber member.
20. electric installation switching device as claimed in claim 1 is characterized in that, descending towards following of fixing contact that described contact lever occurs when the wearing and tearing of the contact of activity is that block by fixed-site limits.
21. electric installation switching device as claimed in claim 18 is characterized in that, the block of described fixed-site is to be made of case protrusion.
22. electric installation switching device as claimed in claim 19, it is characterized in that, described contact lever block by fixed-site when following decline remains on such position, so that the swing of release lever can not be subjected to the obstruction of contact lever under situation about discharging.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007024268.0 | 2007-05-23 | ||
| DE102007024268 | 2007-05-23 | ||
| DE102008006863.2 | 2008-01-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201289830Y true CN201289830Y (en) | 2009-08-12 |
Family
ID=40100674
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200028280U Expired - Lifetime CN201289830Y (en) | 2007-05-23 | 2008-02-25 | Electrical installation switch device |
| CNA2008100875402A Pending CN101312105A (en) | 2007-05-23 | 2008-03-25 | Electric installation switching device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100875402A Pending CN101312105A (en) | 2007-05-23 | 2008-03-25 | Electric installation switching device |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN201289830Y (en) |
| DE (1) | DE102008006863A1 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009021773B4 (en) | 2009-05-18 | 2014-12-04 | Abb Ag | Thermal release and electrical switching device with a thermal release |
| DE102009023557B3 (en) | 2009-05-30 | 2010-08-05 | Abb Ag | Electrical switch i.e. circuit breaker, has strip fastened to free end of retaining bracket and comprising fastening end, and input terminal connected with fastening end over conductor piece that has higher conductivity than bracket |
| DE102009051929B4 (en) | 2009-11-04 | 2013-06-13 | Abb Ag | Electrical service switching device with a hammer |
| DE102009053012A1 (en) | 2009-11-16 | 2011-05-19 | Abb Ag | Electrical service switching device |
| DE102010019033B4 (en) | 2010-05-03 | 2012-02-23 | Abb Ag | Electrical service switching device |
| CN102237208A (en) * | 2010-05-03 | 2011-11-09 | Abb股份公司 | Electrical service switching device |
| DE102010021191A1 (en) | 2010-05-21 | 2011-11-24 | Abb Ag | Electrical installation switching device i.e. circuit breaking switch, has stoppers connected with housing, where movement path of contact lever is limited in open condition in two limit positions by resting against respective stoppers |
| DE102011008834A1 (en) | 2011-01-19 | 2012-07-19 | Abb Ag | Service switching device |
| DE102011008831A1 (en) | 2011-01-19 | 2012-07-19 | Abb Ag | Istallationsschaltgerät |
| DE102011008829B4 (en) | 2011-01-19 | 2012-08-09 | Abb Ag | Service switching device |
| DE102011008832A1 (en) | 2011-01-19 | 2012-07-19 | Abb Ag | Service switching device |
| DE102011008833B4 (en) | 2011-01-19 | 2013-03-07 | Abb Ag | Overcurrent release and service switching device with overcurrent release |
| CN102254755B (en) * | 2011-06-28 | 2013-10-16 | 法泰电器（江苏）股份有限公司 | Operation mechanism of circuit breaker |
| DE102011118968B3 (en) | 2011-11-19 | 2013-01-31 | Abb Ag | Installation switching device with pre-chamber space and guide ribs |
| DE102012001336B4 (en) | 2012-01-25 | 2024-05-23 | Abb Ag | Electrical load-break switch for low voltage |
| EP2608233A1 (en) * | 2011-12-23 | 2013-06-26 | Abb Ag | Electrical load interrupter for low voltage |
| DE102012014104A1 (en) | 2012-07-17 | 2014-02-06 | Abb Ag | Electrical service switching device |
| DE102013200929A1 (en) * | 2013-01-22 | 2014-07-24 | Siemens Aktiengesellschaft | Switching mechanism for electro-mechanical switching device, has bearing element comprising bearing opening that is designed, such that arranged bending bead is freely movable in predefined position |
| DE102013002470B4 (en) | 2013-02-14 | 2014-10-23 | Abb Ag | Thermal release and installation switching device with a thermal release |
| DE102013004093B4 (en) | 2013-03-11 | 2015-01-08 | Abb Ag | Electric installation switchgear |
| EP2824689B1 (en) | 2013-06-13 | 2016-04-06 | ABB Schweiz AG | Dynamic actuator and electric installation device with a dynamic trigger |
| CN103681136B (en) * | 2013-12-19 | 2016-10-05 | 厦门宏发开关设备有限公司 | A kind of switch circuit breaker structure |
| DE102016108292A1 (en) | 2016-05-04 | 2017-11-09 | Abb Schweiz Ag | Electrical installation device with switch position indicator |
| DE202018104426U1 (en) | 2018-08-01 | 2018-11-14 | Abb Schweiz Ag | Electrical installation device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3342469A1 (en) | 1983-11-24 | 1985-06-05 | Bbc Brown Boveri & Cie | ELECTRIC SWITCH |
| DE102004055564B4 (en) | 2004-11-18 | 2022-05-05 | Abb Ag | Electrical installation switching device |
-
2008
- 2008-01-31 DE DE102008006863A patent/DE102008006863A1/en not_active Withdrawn
- 2008-02-25 CN CNU2008200028280U patent/CN201289830Y/en not_active Expired - Lifetime
- 2008-03-25 CN CNA2008100875402A patent/CN101312105A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008006863A1 (en) | 2009-01-22 |
| CN101312105A (en) | 2008-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |