CN101765895A - Electrical protective device - Google Patents
Electrical protective device Download PDFInfo
- Publication number
- CN101765895A CN101765895A CN200880100205A CN200880100205A CN101765895A CN 101765895 A CN101765895 A CN 101765895A CN 200880100205 A CN200880100205 A CN 200880100205A CN 200880100205 A CN200880100205 A CN 200880100205A CN 101765895 A CN101765895 A CN 101765895A
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- CN
- China
- Prior art keywords
- contact
- protective device
- rotating shaft
- substrate bulk
- electric protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/04—Contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/22—Contacts characterised by the manner in which co-operating contacts engage by abutting with rigid pivoted member carrying the moving contact
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/0253—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch two co-operating contacts actuated independently
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
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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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
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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
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/32—Insulating body insertable between contacts
Landscapes
- Breakers (AREA)
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
Abstract
The present invention relates to an electrical protective device having a first contact piece (1) and a second contact piece (11) which each have at least one contact surface (2, 12), wherein the contact surfaces (2, 12) of the first contact piece (1) and of the second contact piece (11) are operatively connected in order to pass a current through them, and can be disconnected from one another in order to switch off the current flow, wherein the first contact piece (1) is arranged such that it can move in the electrical protective device, and the second contact piece (11) is mounted in the electrical protective device such that it can rotate about a rotation axis (14), in which protective device the second contact piece (11) is arranged on a substrate body (13), and in that at least one part of the rotation axis (14) runs through the orthogonal projection of the touching surface (15) between the second contact piece (11) and the substrate body (13), in the direction of the substrate body (13).
Description
Technical field
The present invention relates to a kind of electric protective device; it has first contact and second contact; described first contact and second contact have at least one contact-making surface separately; wherein the contact-making surface of the contact-making surface of first contact and second contact effectively contacts for circulating current; and can be mobile and separated from one another in order to cut off electric current; wherein in this electric protective device, and second contact is being placed in around the form that rotating shaft rotates in this electric protective device with arranged in form movably for first contact.
Background technology
Electric protective device, especially overcurrent protective device such as power switch be in particular for cutting off reliably under the situation of short circuit, and protect customer and equipment thus.In addition, electric or mechanical overcurrent protective device is suitable for meeting that technical conditions ground is artificial cuts off customer and be used in maintenance work or more under the situation of exchange device equipment separated with power grid security.Electric protective device or overcurrent protective device, especially power switch move with electromagnetic mode usually.
That is to say, such electric protective device be technological value high, integrated to the electric switch equipment of the protection of motor, circuit, transformer and generator.Described electric protective device is applied in the place with less switching frequency usually.Except short-circuit protection, such electric protective device or such overcurrent protective device, especially power switch or line protection switch also are applicable to overload protection.
Under the situation of short circuit, electric protective device or overcurrent protective device cut off electric equipment reliably.Therefore, described electric protective device or overcurrent protective device provide and prevent the safeguard protection of transshipping.Each conductor that electric current flow through heats up more or less.At this, described intensification depend on current strength and conductors cross ratio, be so-called current density.Current density does not allow excessive, but because otherwise conductor insulation may be burnt out and fire hazard owing to heat up too high.In order to protect electric equipment to avoid these injurious effects, especially power switch or line protection switch are used as electric protective device or are used as overcurrent protective device.
The line protection switch of current limliting and power switch have two being used to of working separated from one anotherly and transship and the trigger mechanism of short-circuit protection.Two trigger equipment series connection.Be responsible for carrying out protection under the short-circuit conditions by the electromagnetism trigger equipment that almost works without delay on the time.Under the situation of short circuit, the electromagnetism trigger equipment is opened the switch lock (Schaltschloss) of (entklinken) power switch without delay.Switch armature (Schaltanker) before short circuit current can reach its peak with switch member, be that removable contact separates.
As power switch or safeties, line protection switch not only can be at cut-off loop automatically under the situation of overload but also under can the situation in short circuit.
Known electric protective device or overcurrent protective device, be that line protective devices or power switch have the contact slipper and the first removable switch member, are moveable contact.First moveable contact has at least one electric contacting part, is contact-making surface.In addition, such electric protective device or overcurrent protective device have at least one other, partly also movably be used for the contact of conduction current.Under the state of connecting, at least one electric contacting part of first moveable contact contacts at least one other the contact of described electric protective device or overcurrent protective device.Under the situation of short circuit, at least one electric contacting part of first moveable contact, be that contact-making surface breaks away from described at least one other contact, make electric current flow and be interrupted.
Known electric protective device like this has first moveable contact and second moveable contact; wherein said contact has at least one contact-making surface separately; and wherein the contact-making surface of the contact-making surface of first contact and second contact effectively contacts for circulating current, and can be mobile and separated from one another in order to cut off electric current.Under the situation about cutting off in short circuit, two movably contact by spring force and/or by mobile armature and by separated from one another.At this, two contacts can move with deviating from each other.
Known a kind of power switch from Germany Patent document DE 35 39 976 C2 with first contact and second contact.Two contacts all have at least one contact-making surface, and wherein the contact-making surface of the contact-making surface of first contact and second contact effectively contacts for circulating current, and can be mobile and separated from one another in order to cut off electric current.Known in addition: first contact with arranged in form movably in this electric protective device, and second contact also with arranged in form movably in this electric protective device.
Germany's publication document 1 763 007 discloses a kind of such electric protective device equally.Therefore among the Fig. 1 there two movably contact systems have been shown.Described movably one of contact system has switch member and flexible conductor.The movably winding that another contact system has switch member equally and carries this switch member.
From US 2005/01848337 also known a kind of contact device, it has the first and second contact supporting masses of laying with form movably.Place, end at described contact supporting mass is furnished with contact site respectively.Two contact supporting masses can be by spring element movably laying around the form of corresponding rotating shaft rotation.
In electric protective device, line protection switch or power switch, when disconnecting, contact can between contact separated from one another, produce electric arc under the situation about cutting off in short circuit such as current limliting.Described electric arc at first enters so-called combustion chamber from described contact-making surface call away to and described known electric protective device along slide rail.That is to say, when the contact position between contact separates, produce electric arc.Yet described loop just is disconnected under the situation of arc extinction.For fear of electric arc because its high temperature and damaged line protection switch or power switch and in order to guarantee that overcurrent is interrupted must make electric arc extinguish in the shortest time.For this purpose, known electric protective device, have the combustion chamber such as line protection switch or power switch, described combustion chamber is made of a plurality of sheet metals.Described sheet metal is in most of the cases arranged abreast and is had a uniform air-gap.
The shortcoming of above-mentioned electric protective device is: described electric protective device usually can not enough extinguish the electric arc that is produced apace.Corresponding contact is disposed on the larger-size supporting mass, wherein said contact be set at the place, an end of described supporting mass and rotating shaft at the place, the other end of described supporting mass.When separating described contact, described supporting mass rotates, and needs many spaces for this reason.Because the supporting mass size is bigger, therefore described electric protective device also has bigger size.In addition, therefore described larger-size supporting mass-contact unit cost height is expensive to manufacture.
Summary of the invention
The present invention based on task be: provide a kind of electric protective device, especially overcurrent protective device, such as power switch or line protection switch, it guarantees especially fast, simple and extinguish the electric arc that produces at low cost when cutting off.In addition, the size of described electric protective device should be held as far as possible little.
According to the present invention, this task solves by the electric protective device that has according to independent claims 1 described feature.From dependent claims, specification and accompanying drawing, draw further feature of the present invention and details.
Task of the present invention solves by a kind of electric protective device; it has first contact and second contact; described first contact and second contact have at least one contact-making surface separately; wherein the contact-making surface of the contact-making surface of first contact and second contact effectively contacts for circulating current; and can be mobile and separated from one another in order to cut off this electric current; wherein first contact is disposed in this electric protective device with form movably; and second contact is can be placed in this electric protective device around the form that rotating shaft rotates; wherein second contact is disposed on the substrate bulk, and at least a portion of described rotating shaft is passed the rectangular projection of the face that touches on described substrate bulk direction between second contact and the described substrate bulk.Two contacts of this electric protective device all are disposed in this electric protective device with form movably.By the special arrangement of described rotating shaft, can very apace second contact be opened from the rotation of first contact with respect to second contact and described substrate bulk.That is to say, two contacts do not rotated simply each other from, but second contact is rotated, and makes the substrate bulk that is furnished with second contact rotate between first and second contact.Also and then around rotating shaft rotate second contact by rotating described substrate bulk around rotating shaft apace, promptly electric arc is cancelled electrode, make this electric arc promptly to extinguish.By the rectangular projection that at least a portion of described rotating shaft is passed the face that touches between second contact and the described substrate bulk, second contact is separated apace with first contact.Between two contacts, elongate electric arc apace by rotating substrate bulk apace and substrate bulk being squeezed.Preferably, at least a portion of described rotating shaft is passed the described rectangular projection that touches face being directly adjacent to described substrate bulk place.The described face that touches is contacted of second contact and a described substrate bulk.Described rotating shaft is arranged in that side that deviates from second contact of described substrate bulk.
By make described substrate bulk and and then near the rotating shaft of second contact be in directly rotated, the electric arc between the contact-making surface of two contacts is promptly elongated.That is to say that arc voltage rises rapidly because second contact is rotated out, and more promptly causes the disconnection of electric arc thus.
Second contact is being placed in this electric protective device around the form of described rotating shaft rotation.At this, the substrate bulk that is furnished with second contact above can be connected with described rotating shaft directly or indirectly.Therefore it is contemplated that, described substrate bulk is fixed on the described rotating shaft by fixed lever.
By with two contact-making surfaces of arranged in form movably, force electric arc to extend more quickly.At this, two contacts move in the opposite direction.Move in the opposite direction and second contact is opened from the rotation of first contact immediately by two contacts, arc voltage advantageously rises rapidly.
Preferred a kind of electric protective device, wherein said rotating shaft parallel is in the described face that touches.Described thus substrate bulk and and then second contact be equal to around the rotation of described rotating shaft.Described rotating shaft is positioned to the closer to described substrate bulk, and the then described substrate bulk and second contact are more quickly around described rotating shaft rotation.Therefore, preferred especially a kind of electric protective device, at least a portion of wherein said rotating shaft is passed described substrate bulk.The described layout relative to each other of described rotating shaft and described substrate bulk is the particularly preferred form of implementation of this electric protective device.Described rotating shaft passes described substrate bulk with advantageously being parallel to the face of touching.Therefore, the contact-making surface of second contact is very little apart from the distance of described rotating shaft, and after the contact-making surface of short circuit appearance and two contacts separated, the rotation of second contact was very rapidly carried out thus.Therefore, the voltage of the electric arc that is produced can rise very apace, thereby causes the very fast disconnection of this electric arc.
After the contact-making surface of two contacts is opened, come by second contact rotation and rapidly this electric arc to be cancelled contact-making surface, to be electrode.This electric arc is opened by described contact-making surface rotation and is extended rapidly, makes arc voltage obviously raise.Therefore, in the generation stage of this electric arc, higher arc voltage has just caused less short circuit current to raise, and makes that the load of circuit and equipment is obviously reduced.
Second contact is connected conductively with this electric protective device.At this, described rotating shaft itself can advantageously be constructed to electric conductor.This province goes to the additional cabling of second contact.
Described rotating shaft can be disposed within this electric protective device with form movably.Described rotating shaft for example can turn and/or be installed in movably in this electric protective device.Second contact is separated with first contact and correspondingly improves the arc voltage of electric arc.
Also preferred a kind of electric protective device, wherein said rotating shaft is formed in this electric protective device regularly.This provides cost savings on the one hand, because lay described rotating shaft regularly than movably arranging easier realization.On the other hand, can more preferably control second contact, because this rotation is carried out with two dimension rather than three-dimensional form around the fixedly rotation of rotating shaft.
Another preferred electric protective device regulation: described rotating shaft with intersect by the described major axis that touches the formed three-dimensional body of rectangular projection of face.By the described rectangular projection generation infinite three-dimensional body of face on described substrate bulk direction that touch.The major axis of described three-dimensional body touches face and in the ideal case also perpendicular to described substrate bulk perpendicular to described.If the major axis of the imaginary body of described rotating shaft and institute's projection intersects, then described rotating shaft is in about described and touches the center of face or near the center.That is to say that described rotating shaft is in the center of the face that is covered by second contact on the described substrate bulk or near the center.Therefore, especially have under the situation of less thickness in substrate bulk, described rotating shaft is assigned with very near second contact, makes second contact can carry out very apace around the rotation of described rotating shaft, and this causes the arc voltage of this electric arc very rapidly to rise.
The substrate bulk of this electric protective device can have various forms.This substrate bulk advantageously has the structure of the body of disc or square disc shape.Particularly preferably, described substrate bulk has rectangular configuration.Preferably, described rectangle substrate bulk has little thickness.This is mainly corresponding to the body of square disc shape.Second contact preferably is disposed in center or the eccentric part a little on the described substrate bulk.
By lay around described rotating shaft described substrate bulk and and then second contact, second contact can be around described rotation shaft rotary random angle.Therefore, second contact for example at contact-making surface by can be after separated from one another around described rotating shaft Rotate 180 ° or more than 180 °.
Rotate for example more than 180 ° or 180 ° by second contact, can force described electric arc to enter among narrow slit or labyrinth (Labyrinth), this improves arc voltage by following effect: by with wall between stronger contact and the increase of pressure adds long arc, make electric arc narrow down, cool off electric arc.In addition, open or rotate out and/or remove described contact by rotation, the danger of arc reignition is significantly reduced.
In addition; preferred a kind of electric protective device; wherein said rotating shaft parallel is in the major axis of described substrate bulk or coaxial with described major axis, and wherein from the cross section perpendicular to major axis of described substrate bulk, described rotating shaft is in 1/3rd equally divided positions of described substrate bulk.In a favourable form of implementation, described rotating shaft is coaxial with the major axis of described substrate bulk.Described thus substrate bulk all equates throughout about the distribution of weight of the position of described rotating shaft.Therefore, described substrate bulk can be around described rotating shaft rotation under the situation that does not have big power to consume.At this, second contact can be disposed in center, described rotating shaft top.But also can stipulate: second contact is fixed on the described substrate bulk with the form that staggers a little with described rotating shaft.
In addition, preferred a kind of electric protective device wherein is provided with rotatablely moving of substrate bulk that retaining device lays with rotatable form with restriction, and wherein said retaining device is disposed in that side that deviates from first contact of described substrate bulk.Described retaining device especially staggers a little and is parallel under the situation of major axis of described substrate bulk favourable at the major axis of described rotating shaft and described substrate bulk.Described thus retaining device can be disposed on this electric protective device, make an end of described substrate bulk not collide described retaining device when described substrate bulk is rotated, and the second end of described substrate bulk collides described retaining device.Therefore, described retaining device around the defined rotation of described rotating shaft, for example 180 ° just limit described substrate bulk later on.
Described retaining device is used to limit rotatablely moving of described substrate bulk on the one hand, is used on the other hand arc channel is narrowed down, and then is used for further improving arc voltage.At least the second contact stops it later at the described retaining device of collision and rotatablely moves.
In case this electric protective device has two contacts of laying with removable form, then one of described contact or two contacts can have retaining device.Described retaining device is by insulating material, constitute such as plastics or pottery.
Preferably, described retaining device rotates 150 ° to 350 °, the preferred Rotate 180 ° described substrate bulk of later restriction in described substrate bulk around described rotating shaft.By rotating at least 150 ° around described rotating shaft, sufficiently high arc voltage is applied to electric arc, so this electric arc disconnects.
In addition, this electric protective device can be stipulated: first contact with rotatable and/or movably form be placed in this electric protective device, and/or first contact is being placed in this electric protective device around the form of second rotating shaft rotation.That is to say, except the rotation of second contact, can also concurrently first contact be placed in this electric protective device with rotatable and/or removable and/or rotatable form.When cutting off, the contact-making surface of two contacts, especially two contacts moves each other separately.Preferably, first contact, moves with second contact when contact of winning is cut off in short circuit in this electric protective device with arranged in form movably.At this, first contact can or be coupled with prestressing force with the form of spring, or the motion equally by armature is moved.At this, first contact is moved out by the rotating shaft from second contact, makes second contact to rotate freely around its rotating shaft.
Especially preferred a kind of electric protective device, wherein first contact is being placed in around the form that rotating shaft rotates in this electric protective device.That is to say that not only second contact but also first contact are also touching the later rotating shaft rotation around them of armature.Advantageously, one of two contacts additionally are moved out and/or rotate out from its contact position, and described thus two contacts do not stop rotation mutually.
The rotating shaft of first contact preferably is parallel to the rotating shaft of second contact.
In another preferred expansion scheme of this electric protective device, can stipulate: first and second contacts are disposed on the substrate bulk of laying with rotatable form.The material of serve as the especially insulating material of substrate bulk, for example making by plastics or pottery.Advantageously, the rotating shaft of described contact advantageously passes the substrate bulk of the insulation of corresponding contact.Described rotating shaft stop electric current along described rotating shaft transmission thus, because should serve as conductor.Preferably, the rotation of described substrate bulk can be limited by described retaining device.That is to say that after the specific rotation of contact or substrate bulk, described contact/substrate bulk is collided described retaining device, makes arc channel narrow down.
Preferred a kind of electric protective device, it is constructed to overcurrent protective device or short-circuit protection, especially is constructed to line protection switch or power switch.It is contemplated that in addition, this electric protective device is configured to motor protecting switch.
In a preferred form of implementation, the rotation axis of first contact is oriented the rotating shaft that is parallel to second contact.Guarantee that thus first contact directionally rotates out from second contact.
In another preferred form of implementation, the rotating shaft of first contact is oriented the rotating shaft that is parallel to second contact.This has guaranteed the rotation that described contact is relative to each other directed.Avoided the crooked of described contact thus.At this, the rotating shaft of first contact does not also correspond to the rotation axis of first contact.
Description of drawings
With reference now to accompanying drawing, further sets forth the present invention according to embodiment.Accompanying drawing:
Fig. 1 shows the closure contact of two contacts;
Fig. 2 shows back to back contact position under the situation that has electric arc between the contact-making surface after triggering electric protective device;
Fig. 3 shows the electric arc that the quilt between the contact-making surface of the contact-making surface of first contact and second contact draws back;
Fig. 4 shows the arc channel that narrows down;
Fig. 5 shows in the later contact position of arc extinction;
Fig. 6 shows the closure contact that is in two contacts under the situation outside the substrate bulk at rotating shaft.
Embodiment
Fig. 1 shows first contact 1 and second contact 11 of electric protective device, especially overcurrent protective device such as power switch or line protection switch.In the figure, show contact 1 and 11 closure state, be the state of contact 1 and 11 before short circuit.Second contact 11 has contact-making surface 12 and substrate bulk 13.Substrate bulk 13 is made of insulating material.Second contact 11 is laying around the form of rotating shaft 14 rotations.Preferably, rotating shaft 14 is securely fixed on the housing that within the electric protective device, promptly is fixed on this electric protective device.Rotating shaft 14 passes the substrate bulk 13 of second contact 11, and wherein said rotating shaft is arranged to the face that touches 15 that is parallel between the substrate bulk 13 and second contact 11.In the figure, the contact-making surface 2 of first contact 1 effectively contacts with the contact-making surface 12 of second contact 11 for circulating current.In this form of implementation, first contact-making surface 1 is laid with rotating form, the rotating shaft of wherein not shown first contact 1.In addition, figure 1 illustrates the retaining device 30 that is used to collide second contact 11.Retaining device 30 is by insulating material, especially be made of plastics or pottery.
Rotating shaft 14 passes the rectangular projection of the face of touching 15 on the direction of substrate bulk 13.Carry out the rotation of the substrate bulk 13 and then second contact 11 thus very apace, because the spacing between second contact 11 and the rotating shaft 14 is very little.This advantageously causes setting up apace the high arc voltage of electric arc 20.This causes electric arc 20 to extinguish apace again.
Figure 2 illustrates contact 1,11 back to back position after triggering electric protective device.Between two contact-making surfaces 2 and 12 of first contact 1 and second contact 11, form electric arc 20.As shown in Figure 1, second contact 11 is by unshowned armature or reversed to such an extent that leave its conductive site by elastic force.The reversing concurrently by armature or rotated to such an extent that leave it of first contact 1 and second contact 11 in the conductive site shown in Fig. 1 by elastic force.Two contact-making surfaces 2,12 of contact 1,11 are separated each other.Contact between first and second contact 1,11 is opened, and then electric arc 20 forms.
In Fig. 3, the electric arc 20 that is produced is elongated.Second contact 11 has been finished around the about 100 ° rotation of its rotating shaft 14, and first contact 1 has been rotated to such an extent that leave approximately 5-15 ° of its homeposition (as shown in Figure 1).By rotating first contact 1, guaranteed: second contact 11 can rotate freely, and can not be restricted owing to knocking first contact 1 in rotatablely moving at it.If in this form of implementation, first contact 1 is not rotated, and then the substrate bulk 13 of second contact 11 will be clashed into first contact 1, especially be clashed into the pivoted arm 3 of first contact 1, makes to stop second contact 11 further to reverse.It is contemplated that also first contact 1 collision of the substrate bulk 13 by second contact 11 or second contact 11 just is rotated to such an extent that leave its contact position.Like this, second contact 1 will be to be used to trigger the rotation of first contact 1 and/or mobile trigger equipment.Electric arc 20 by second contact 11 reverse and the rotation of first contact 1 is elongated rapidly.Produce higher arc voltage thus.
Fig. 4 shows the narrow arc channel that is made of retaining device 30 and the substrate bulk of reversing 13, and described arc channel causes arc voltage obviously to raise.At this; retaining device 30 favourable being disposed in this electric protective device; make in this form of implementation of electric protective device; the substrate bulk 13 of second contact 11 or second contact 11 knocks retaining device 30 behind second contact, 11 Rotate 180s °; and therefore force this electric arc to enter in the narrow passage, thereby arc voltage rise very consumingly.But retaining device 30 other position within this electric protective device also is fine, and makes the substrate bulk 13 of second contact 11 or second contact 11 just collide retaining device 30 under rotating less than 180 ° situation.In addition, retaining device 30 can be disposed within this electric protective device, makes that the substrate bulk 13 of second contact 11 or second contact 11 is reversed greater than 180 °, for example reverses 270 °.
In Fig. 5, electric arc 20 extinguishes, and second contact 11 being because reversing of second contact 11 and covered, and has stoped effectively thus and restrike.
Fig. 6 shows the closure contact (as shown in Figure 1) of two contacts 1,11, and wherein rotating shaft 14 is herein outside substrate bulk 13.At this, rotating shaft 14 also extends on the direction of the rectangular projection of the face that touches 15 between the substrate bulk 13 and second contact 11.In Fig. 6, the major axis 16 of substrate bulk 13 is represented by " X ".Rotating shaft 14 is parallel to the major axis 16 of substrate bulk 13.
In Fig. 1, rotating shaft 14 is not from the center but pass substrate bulk 13 on the lower side.Substrate bulk 13 is divided into two arms (Schenkel) about rotating shaft 14 thus.Underarm is shorter than upper arm.When substrate bulk 13 rotations, retaining device 30 is not collided in the end of underarm thus, but retaining device 30 is collided in the end of long upper arm.According to Fig. 1 to Fig. 5, the end (with reference to figure 1) of the long upper arm of substrate bulk 13 in substrate bulk 13 around ° later collision retaining device 30 of rotating shaft 14 Rotate 180s.
Core of the present invention is directly rotating shaft to be arranged in the rectangular projection of the face of touching 15 on the direction of substrate bulk, and wherein rotating shaft 14 is arranged near second contact 11.This makes the contact-making surface 12 of second contact 11 to open from contact-making surface 2 rotations of first contact 1 especially apace.The special tectonic of fast rotational and substrate bulk 13 by second contact-making surface 11, the arc voltage of the electric arc 20 that produced in 2,12 o'clock at separated contact surfaces is improved rapidly, and this causes electric arc 20 to extinguish apace again.Further advantageously, by rotation substrate bulk 13, rotating body 13 squeezes between contact 2,12, and electric arc is forced to and walks around substrate bulk thus.
Such electric protective device can be configured to less; and make with low cost; because because rotating shaft 14 is close to second contact 11 with respect to the special arrangement of second contact 11, especially rotating shaft 14; so do not need big member; such as dwang, and therefore needn't be through long distance.
After electric arc 20 extinguishes, guaranteed the short circuit cut-out that electric protective device is final.Have such contact-making surface 1,11 movably and rotating shaft 14 of being constructed to and guaranteed that with respect to the electric protective device of such layout of first contact 11 opening the electric arc 20 that the back produces in contact extinguishes very apace.In addition, such electric protective device needs less combustion chamber where necessary, because set up arc voltage by the contact of laying with rotatable form 11.
Claims (14)
1. electric protective device; it has first contact (1) and second contact (11); described first contact (1) and second contact (11) have at least one contact-making surface (2 separately; 12); wherein the contact-making surface (12) of the contact-making surface (2) of first contact (1) and second contact (11) effectively contacts for flowing through of electric current; and can be mobile and separated from one another in order to cut off this electric current; wherein first contact (1) with arranged in form movably in this electric protective device; and second contact (11) is being placed in this electric protective device around the form of rotating shaft (14) rotation; it is characterized in that; second contact (11) is disposed on the substrate bulk (13), and at least a portion of described rotating shaft (14) is passed the rectangular projection of the face that touches (15) on described substrate bulk (13) direction between second contact (11) and the described substrate bulk (13).
2. electric protective device according to claim 1 is characterized in that, described rotating shaft (14) is parallel to the described face (15) that touches.
3. electric protective device according to claim 1 and 2 is characterized in that, at least a portion of described rotating shaft (14) is passed described substrate bulk (13).
4. according to the described electric protective device of one of claim 1 to 3, it is characterized in that described rotating shaft (14) is constructed to electric conductor.
5. according to the described electric protective device of one of claim 1 to 4, it is characterized in that described rotating shaft (14) intersects with the major axis of the three-dimensional body that forms by the described rectangular projection that touches face (15).
6. according to the described electric protective device of one of claim 1 to 5, it is characterized in that described substrate bulk (13) has rectangular configuration.
7. according to the described electric protective device of one of claim 1 to 6; it is characterized in that; described rotating shaft (14) is parallel to the major axis (16) of described substrate bulk (13) or coaxial with the major axis (16) of described substrate bulk (13); and from the cross section perpendicular to described major axis (16) of described substrate bulk (13), described rotating shaft (14) is in 1/3rd equally divided positions of described substrate bulk (13).
8. according to the described electric protective device of one of claim 1 to 7; it is characterized in that; retaining device (30) is set to limit rotatablely moving of the substrate bulk (13) of laying with rotatable form, and wherein said retaining device (30) is disposed in that side that deviates from first contact (1) of described substrate bulk (13).
9. electric protective device according to claim 8 is characterized in that, the rotation of described substrate bulk (13) can be collided described retaining device (30) by the end of described substrate bulk (13) and is limited.
10. electric protective device according to claim 9 is characterized in that, described retaining device (30) rotates 150 ° to 350 ° in described substrate bulk (13) around described rotating shaft (14), preferred Rotate 180 ° later restriction described substrate bulk (13).
11., it is characterized in that first contact (1) is placed in this electric protective device with rotatable and/or removable and/or rotatable form according to the described electric protective device of one of claim 1 to 10.
12., it is characterized in that first contact (1) is being placed in around the form that rotating shaft rotates in this electric protective device according to the described electric protective device of one of claim 1 to 11.
13. electric protective device according to claim 12 is characterized in that, the rotating shaft parallel of first contact (1) is in the rotating shaft (14) of second contact (11).
14., it is characterized in that this electric protective device is constructed to overcurrent protective device or short-circuit protection according to the described electric protective device of one of claim 1 to 13, especially be constructed to line protection switch or power switch.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102007034526.9 | 2007-07-24 | ||
| DE200710034526 DE102007034526B3 (en) | 2007-07-24 | 2007-07-24 | Electrical protection device |
| PCT/EP2008/058053 WO2009013091A1 (en) | 2007-07-24 | 2008-06-25 | Electrical protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101765895A true CN101765895A (en) | 2010-06-30 |
| CN101765895B CN101765895B (en) | 2012-11-14 |
Family
ID=39830063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880100205XA Expired - Fee Related CN101765895B (en) | 2007-07-24 | 2008-06-25 | Electrical protective device |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2171736A1 (en) |
| CN (1) | CN101765895B (en) |
| DE (1) | DE102007034526B3 (en) |
| WO (1) | WO2009013091A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486982A (en) * | 2010-12-03 | 2012-06-06 | 北京人民电器厂有限公司 | Breaker with forced flash barrier device |
| CN104022000B (en) * | 2014-05-27 | 2017-04-05 | 通能顺达科技国际有限公司 | A kind of fast reaction departs from breaker and the fast reaction of breaker departs from method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1135552B (en) | 1960-01-30 | 1962-08-30 | Schiele Verwaltungsgmbh | Contact arrangement for low-voltage switch with two contact pieces for on and off position containing switching element |
| BE620240A (en) | 1961-07-13 | |||
| US3555471A (en) * | 1968-02-28 | 1971-01-12 | Vni I Pk I Electr Oapparatov | Automatic breaker with coil adjustable to effect current limiting or electrodynamic blowoff compensation |
| FR2573571B1 (en) * | 1984-11-16 | 1987-01-09 | Telemecanique Electrique | CIRCUIT BREAKER WITH REMOTE OPENING AND CLOSING OF ITS CIRCUITS |
| JP4321296B2 (en) * | 2004-02-19 | 2009-08-26 | 富士電機機器制御株式会社 | Repulsive circuit breaker contactor device |
-
2007
- 2007-07-24 DE DE200710034526 patent/DE102007034526B3/en not_active Expired - Fee Related
-
2008
- 2008-06-25 EP EP08785879A patent/EP2171736A1/en not_active Withdrawn
- 2008-06-25 WO PCT/EP2008/058053 patent/WO2009013091A1/en active Application Filing
- 2008-06-25 CN CN200880100205XA patent/CN101765895B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007034526B3 (en) | 2009-02-19 |
| CN101765895B (en) | 2012-11-14 |
| WO2009013091A1 (en) | 2009-01-29 |
| EP2171736A1 (en) | 2010-04-07 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20200625 |