CN106971913A - It is a kind of to resist the magnetic latching relay of short circuit current flow - Google Patents
It is a kind of to resist the magnetic latching relay of short circuit current flow Download PDFInfo
- Publication number
- CN106971913A CN106971913A CN201710213323.2A CN201710213323A CN106971913A CN 106971913 A CN106971913 A CN 106971913A CN 201710213323 A CN201710213323 A CN 201710213323A CN 106971913 A CN106971913 A CN 106971913A
- Authority
- CN
- China
- Prior art keywords
- movable contact
- bending part
- spring
- dynamic
- short circuit
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/22—Polarised relays
- H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
-
- 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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
-
- 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
- H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
- H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
- H01H1/28—Assembly of three or more contact-supporting spring blades
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Connections Arranged To Contact A Plurality Of Conductors (AREA)
Abstract
The magnetic latching relay of short circuit current flow, including contact portion can be resisted the invention discloses a kind of；The dynamic spring part that contact portion is substantially parallel to each other by two groups is constituted；Dynamic spring part includes movable contact spring, movable contact, dynamic spring lead-out tablet and stationary contact；It is in the first recessed bending part that an one side in thickness is respectively provided with two movable contact springs in protrusion another side, the protrusion direction of two the first bending parts is identical, the bending of first bending part of one of movable contact spring is less than the bending of the first bending part of another movable contact spring, with the protrusion for the first bending part for causing one movable contact spring can coordinate another movable contact spring the first bending part it is recessed in so that between reducing two movable contact springs apart from while and increase the effective length of each movable contact spring.The present invention can increase the electromagnetic attraction between two groups of dynamic spring parts, so as to be effectively increased the contact between contact, resist short circuit current flow.
Description
Technical field
The present invention relates to relay technical field, more particularly to a kind of magnetic that can resist short circuit current flow keeps relay
Device.
Background technology
The structure of existing magnetic latching relay is made up of magnetic circuit system, contact system, pushing mechanism and pedestal.Magnetic circuit system
Typically it is made up of the magnetic circuit of two almost symmetries, including static magnetic conduction body component, movable magnetic conduction body component and coil, contact system
Including moving spring part, quiet spring part, pushing mechanism is typically taken on by pushing block.Relay coil leads to direct impulse voltage, magnetic circuit
System works, and pushing block promotes dynamic spring part, makes sound contact, and the actuating of relay, coil leads to reverse impulse voltage, magnetic circuit
System works, and pushing block promotes dynamic spring part, disconnects sound contact, relay involution.
Magnetic latching relay main application fields are electric-power metering, and major function is switch and measures.With countries in the world
Deepening continuously for electric network reconstruction, because the fried table of the ammeter of short circuit current flow initiation, the case caught fire happen occasionally, has triggered huge
Human safety issues and property loss problem.In this context, major Utilities Electric Co.s of the world, ammeter enterprise launch respectively related mark
Accurate or reference professional standard, short circuit current flow ability is resisted with its specification electric energy meter power magnetic latching relay, improves intelligence electricity
The security of table operation.In order to ensure personal safety, electrical equipment safety, be required to magnetic latching relay have bear and connect
The function of short circuit current flow.According to operation of power networks feature and based on to the person, equipment safety consideration, magnetic latching relay resistance short circuit
Electric current has three kinds of operating modes, specific as follows：
Operating mode one：Ammeter front end (upstream power network) short circuit, is characterized in the magnetic latching relay closing of contact (ammeter combined floodgate shape
State), short circuit current flow is larger, and short circuit current flow now is referred to as " safety tolerance short circuit current flow ", it is desirable to which magnetic latching relay bears short
It is during the electric current of road or rear " do not explode, not on fire, without splash ".
Operating mode two：Ammeter rear end (downstream power network) short circuit, is characterized in the magnetic latching relay closing of contact (ammeter combined floodgate shape
State), short circuit current flow is smaller, and short circuit current flow now is referred to as " function tolerance short circuit current flow ", it is desirable to which magnetic latching relay bears short
After the electric current of road " function is normal ".
Operating mode three：Ammeter rear end (downstream power network) short circuit, is characterized in that magnetic latching relay contact disconnects that (ammeter is operated a switch shape
State), short circuit current flow is smaller, and short circuit current flow now is referred to as " function connection short circuit current flow ", it is desirable to which magnetic latching relay is connected short
After the electric current of road " function is normal ".
Under three kinds of operating modes, short circuit current flow difference in size is larger, such as IEC62055-31 standard UC2 grades " safety tolerance short circuit
Electric current " is 4.5KA, is 1.8 times of " function tolerance short circuit current flow " or " function connection short circuit current flow " 2.5KA；UC3 grades " peace
Full tolerance short circuit current flow " is 6KA, is 2 times of " function tolerance short circuit current flow " or " function connection short circuit current flow " 3KA；And for example
ANSI C12.1 standard 200A rated current grade " safety tolerance short circuit current flow " peak value 24KA, is " function tolerance short circuit current flow "
3.4 times of peak value 7KA.
The magnetic latching relay product with resistance short circuit current flow ability is developed, dynamic and static contact must be just improved and close
The pressure of conjunction, electrodynamic repulsion force during contact is passed through to offset short circuit current flow.The pressure of dynamic and static contact closure is improved, will certainly be increased
Appearance and size, the power consumption of increase coil control section of big product, it is impossible to meet client and minimized to product design and low-power consumption
Requirement, meanwhile, product cost anxious poly- can rise, and cause product market competition ability to decline.
In order to solve the above-mentioned technical problem, existing magnetic latching relay is that make use of Lorentz force former in structure design
Reason, is touched in the electromagnetic force that can be produced on movable contact spring (movable contact spring) using one times of short circuit current flow to resist short circuit current flow dynamic and static
The electrodynamic repulsion force produced between point.When concrete scheme is designed, the distance between short circuit current flow size and two reeds is closely related, resists short
The effect of road electric current and reed deflection (rigidity) are closely related.Due to " safety tolerance short circuit current flow " and " function tolerance short circuit
Electric current " or " function connection short circuit current flow " difference are larger, meet the design of " safety tolerance short circuit current flow ", differ surely simultaneous
Hold " function tolerance short circuit current flow " or " function connection short circuit current flow ", vice versa.With entering, the design of UC3 standards is met
Not necessarily backward compatible UC2 standards.
Solving the main technological route of magnetic latching relay resistance short circuit current flow function in the prior art has two kinds, is profit
With one times of short circuit current flow flow through can movable contact spring (i.e. movable contact spring) and can movable contact spring lead-out tablet (move spring lead-out tablet), and movable
The electromagnetic force that is produced on reed (i.e. movable contact spring) resists the electrodynamic repulsion force that short circuit current flow is produced between dynamic and static contact, flows through quiet
Only the short circuit current flow on reed (i.e. static contact spring piece) is not involved in the function of electrodynamic repulsion force between resistance contact.The first magnetic latching relay
Resistance to shorting circuit configuration be " electromagnetic force produced using dynamic spring lead-out tablet when opposite with the movable contact spring sense of current come resist it is dynamic,
The electric power produced when static contact is by high current ".The resistance to shorting circuit configuration of second of magnetic latching relay is " to utilize parallel connection
The identical generation electromagnetic attraction of the sense of current in loop, to increase the pressure between dynamic and static contact " realizes resistance short circuit current flow function.
It is this resistance short circuit current flow structure scheme just like disclosed by Chinese patent CN201210306861.9, be using two groups move
Spring Parallel Design, using electric current with to attracting principle, to increase contact pressure, still, the weak point of this structure is：
Movable contact spring effective length is short, and counter-force is big, and two groups are moved the distance between spring part in, close contact position smaller away from contact position
Larger, the electromagnetic attraction for causing contact position is smaller, and the drawbacks of electromagnetic attraction skewness, is additionally, since close
The position of contact is provided with bending, can cause the structure of similar seesaw, the reed of contact position is outwards stuck up on the contrary, on the contrary
It is the pressure for reducing contact.Two such as Chinese patent CN201280008648.2 institutes of the scheme of this resistance short circuit current flow structure
Disclose, be also to move spring Parallel Designs using two groups, using electric current with to attracting principle, to increase contact pressure, still,
The weak point of this structure is：Movable contact spring effective length is short, and counter-force is big, due to there is dynamic and static contact between two groups of dynamic spring parts
Interval, it is in larger distance, cause electromagnetic attraction smaller, moreover, the elasticity of spring leaf of this structure is small, to the pressure of contact also compared with
It is small.
The content of the invention
It is an object of the invention to overcome the deficiency of prior art there is provided a kind of magnetic that can resist short circuit current flow keep after
Electrical equipment, is based on using the identical generation electromagnetic attraction of the sense of current in shunt circuit, to increase the base of the pressure between dynamic and static contact
On plinth, improved by the structure to contact portion, the electromagnetic attraction between two groups of dynamic spring parts can be increased, so as to effective
Increase the contact between contact, resist short circuit current flow.
The technical solution adopted for the present invention to solve the technical problems is：It is a kind of can resist short circuit current flow magnetic keep after
Electrical equipment, including contact portion；The dynamic spring part that the contact portion is substantially parallel to each other by two groups is constituted；Described two groups dynamic spring portions
Divide includes movable contact spring, movable contact, dynamic spring lead-out tablet and stationary contact respectively；The movable contact is connected to one end of the movable contact spring,
The other end of the movable contact spring connects one end of the dynamic spring lead-out tablet, and the stationary contact is connected to the one of the dynamic spring lead-out tablet
At end；Two movable contacts of dynamic spring part are corresponding with two stationary contacts respectively, to form electricity in parallel in dynamic and static contact
Line structure；It is in the first recessed bending part, two that an one side in thickness is respectively provided with two movable contact springs in protrusion another side
The protrusion direction of individual first bending part is identical, and the bending of the first bending part of one of movable contact spring is less than another movable contact spring
The bending of first bending part, to enable the protrusion of the first bending part of one movable contact spring to coordinate in another movable contact spring
The first bending part it is recessed in so that between reducing two movable contact springs apart from while and increase having for each movable contact spring
Imitate length.
It is in the second recessed bending part that an one side in thickness is also respectively provided with two movable contact springs in protrusion another side,
The protrusion direction of two the second bending parts is identical, and the bending of the second bending part of another movable contact spring is less than one move
The bending of second bending part of reed, to enable the protrusion of the second bending part of another movable contact spring to coordinate described
Second bending part of one movable contact spring it is recessed in, to reduce the distance between two movable contact springs and increase having for each movable contact spring
Imitate length.
First bending part, the second bending part are arcuate shape.
First bending part of described two movable contact springs, the second bending part are generally shaped like U-shaped, n-type or c-type, and bending
The center line of the opening of the U-shaped of portion, n-type or c-type is in substantially vertical with the straight reed of movable contact spring.
In two movable contact springs, straight reed between the first bending part and the second bending part of one movable contact spring to institute
The distance for stating the straight reed between the first bending part of another movable contact spring and the second bending part is less than two movable contact springs tactile
The distance between straight reed at point position.
Straight reed between the first bending part and the second bending part of one movable contact spring moves spring to described another
The distance between the distance of straight reed between the first bending part and the second bending part of piece and two the first bending parts and
The distance between two the second bending parts are roughly equal.
In same group of dynamic spring part, the stationary contact is connected to the other end and the dynamic spring lead-out tablet of the movable contact spring
One end joint.
In same movable contact spring, the protrusion direction of the first bending part is opposite with the protrusion direction of the second bending part.
In same movable contact spring, the first bending part and the second dogleg section other places are at the two ends of the movable contact spring.
The movable contact spring is two single parts with dynamic spring lead-out tablet.
The movable contact spring is integral type structure with dynamic spring lead-out tablet.
The movable contact spring is made up of monolithic reed.
The movable contact spring is overlapped and constituted in a thickness direction by two or two with upper reed plate.
The length and shape of the movable contact spring of two groups of dynamic spring parts with the first bending part and the second bending part are complete
It is identical.
Further, in addition to pedestal, the dynamic spring lead-out tablet of the contact portion is plugged on the pedestal, and two dynamic
Spring lead-out tablet is in the both sides of pedestal respectively, and one of them dynamic spring lead-out tablet is current feedthrough, and another dynamic spring lead-out tablet is
Electric current exit；Each one end of described two dynamic spring lead-out tablets is fitted in pedestal respectively, described two dynamic spring lead-out tablets it is each
The other end is each extended over outside pedestal.
Described two dynamic spring lead-out tablets are respectively equipped with a convex bud for being used for being engaged with pedestal, institute in thickness direction
State pedestal and be provided with the slot for being used for being engaged with the convex bud of corresponding dynamic spring lead-out tablet.
Each one end end of described two dynamic spring lead-out tablets is along the positioning tongue piece that stretches out respectively, and the positioning tongue piece is relative
Tilt an angle to realize that the bending part to movable contact spring is avoided in dynamic spring lead-out tablet.
The thickness of the positioning tongue piece is less than the thickness of dynamic spring lead-out tablet.
The vertical range of the extended line of the opposite side of described two dynamic spring lead-out tablets is 4.6mm, its margin of tolerance is-
0.1~+0.5mm；In described two dynamic spring lead-out tablets, parallel side wall in pedestal closer to a dynamic spring lead-out tablet institute
The size for stating opposite side to the outer surface of the parallel side wall is 5.1mm, and its margin of tolerance is -0.5~+0.5mm.
Further, in addition to rotary magnetic circuit part and pushing block, rotary magnetic circuit part by pushing block respectively with institute
The end for stating two movable contact springs is engaged, when rotary magnetic circuit part rotates towards one side, can make two movable contacts and two
Stationary contact is in contact respectively, and when rotary magnetic circuit part rotates towards another side, makes two movable contacts and two stationary contacts point
It is not separated.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention is in that protrusion another side is in as a result of an one side in thickness is respectively provided with two movable contact springs
The first recessed bending part, the protrusion direction of two the first bending parts is identical, the folding of the first bending part of one of movable contact spring
The bending of curved the first bending part less than another movable contact spring, with enable one movable contact spring the first bending part protrusion
It is enough coordinate another movable contact spring the first bending part it is recessed in so that between reducing two movable contact springs apart from while
And increase the effective length of each movable contact spring.This structure of the present invention, on the one hand, make use of setting reed to bend dynamic to increase
Elasticity of spring leaf, so as to increase contact force, on the other hand, utilizes the special construction (protrusion coordinates in recessed) of kink, contracting
The distance between short two movable contact springs, so that increase suction, simultaneously as make movable contact spring effective length longer after reed bending,
So as to further increase suction, make suction bigger.
2nd, the present invention in two movable contact springs as a result of being respectively equipped with the first bending part and the second bending part, and first
The protrusion direction all same of bending part and the second bending part in two movable contact springs, and in same movable contact spring, the first bending
The protrusion direction in portion is opposite with the protrusion direction of the second bending part.This structure of the present invention, because each movable contact spring is equipped with
Bending at two, can greatly increase movable contact spring elasticity, so as to greatly increase contact force, movable contact spring effective length is further increased
It is long, so as to further increase suction, make suction increase bigger, moreover, can not only shorten bending at the two of two movable contact springs
The distance of position, can also shorten the distance of position between bending at two of two movable contact springs, so as to further increase suction.
3rd, the present invention in two movable contact springs as a result of being respectively equipped with the first bending part and the second bending part, and has
The length and shape of the movable contact spring of two groups of dynamic spring parts of the first bending part and the second bending part are identical.The present invention's is this
Structure, the equal length of two groups of movable contact springs, shape is consistent, is both easy to make, and also ensure that the uniformity of two groups of dynamic spring performances.
4th, positioning of the present invention as a result of dynamic spring lead-out tablet in thickness direction provided with one for being engaged with pedestal
Convex bud, is tilted at one end end of dynamic spring lead-out tablet along the positioning tongue piece that stretches out, and positioning tongue piece relative to dynamic spring lead-out tablet
One angle is to realize that the bending part to movable contact spring is avoided.This structure of the present invention, passes through the conjunction to moving spring lead-out tablet
Reason positioning, it is to avoid during product use, because without reliable positioning, under temperature, the effect of the extraneous stress of vibratory impulse,
Dynamic spring lead-out tablet causes the drawbacks of product function fails because loosening, coming off.
The present invention is described in further detail below in conjunction with drawings and Examples；But one kind of the present invention can resist short
The magnetic latching relay of road electric current is not limited to embodiment.
Brief description of the drawings
Fig. 1 is the structural representation of the contact portion of the embodiment present invention；
Fig. 2 is the D structure signal that embodiment contact portion of the invention is engaged between magnetic circuit part, pushing block
Figure；
Fig. 3 is that the contact portion of the embodiment present invention is engaged the knot of (closing of contact) between magnetic circuit part, pushing block
Structure schematic diagram；
The contact portion that Fig. 4 is the embodiment present invention is engaged (contact disconnection) between magnetic circuit part, pushing block
Structural representation；
Fig. 5 is the D structure schematic diagram of the dynamic spring part of the embodiment present invention；
Fig. 6 is the front view of the dynamic spring part of the embodiment present invention；
Fig. 7 is the top view of the dynamic spring part of the embodiment present invention；
Fig. 8 is the D structure decomposing schematic representation of the dynamic spring part of the embodiment present invention；
Fig. 9 is the front view of the D structure decomposing state of the dynamic spring part of the embodiment present invention；
Figure 10 is the three-dimensional structure that embodiment contact portion of the invention is engaged between magnetic circuit part, pushing block, pedestal
Make schematic diagram；
Figure 11 is the top view that embodiment contact portion of the invention is engaged between magnetic circuit part, pushing block, pedestal.
Embodiment
Embodiment
It is of the invention a kind of to resist the magnetic latching relay of short circuit current flow, including contact referring to shown in Fig. 1 to Figure 11
Part；The dynamic spring part 1,2 that the contact portion is substantially parallel to each other by two groups is constituted；Dynamic spring part 1 includes movable contact spring 11, moved
Contact 12, dynamic spring lead-out tablet 13 and stationary contact 14, moving spring part 2 includes movable contact spring 21, movable contact 22, moves spring lead-out tablet 23 and quiet
Contact 24；Movable contact 12 is connected to one end of movable contact spring 11, and one end of the dynamic spring lead-out tablet 13 of other end connection of movable contact spring 11 is quiet
Contact 14 is connected in the end of dynamic spring lead-out tablet 13, the present embodiment, and stationary contact 14 is the other end for being connected to movable contact spring 11
With the joint of one end of dynamic spring lead-out tablet 13, likewise, movable contact 22 is connected to one end of movable contact spring 21, movable contact spring 21 it is another
One end of the dynamic spring lead-out tablet 23 of one end connection, stationary contact 24 is connected to the end of dynamic spring lead-out tablet 23, and stationary contact 24 is connection
The other end and the joint of one end of dynamic spring lead-out tablet 23 in movable contact spring 21；Two movable contacts of dynamic spring part respectively with two
Stationary contact is corresponding, that is, moves the position that the movable contact 12 of spring part 1 is in corresponding matching with the stationary contact 24 of dynamic spring part 2, moves
The movable contact 22 of spring part 2 and the stationary contact 14 of dynamic spring part 1 are in the position of corresponding matching, with dynamic and static contact
Form parallel circuit structure；It is in recessed first that an one side in thickness is respectively provided with two movable contact springs in protrusion another side
Bending part, movable contact spring 11 is provided with the first bending part 111, and the first bending part 111 is arcuate shape, movable contact spring 21 is provided with the first folding
Turn of bilge 211, the first bending part 211 is arcuate shape, and the first bending part 111 and the first bending of movable contact spring 21 of movable contact spring 11
The protrusion direction in portion 211 is identical, and the bending of the first bending part 211 of movable contact spring 21 is less than the first bending of another movable contact spring 11
The bending in portion 111, to enable the protrusion of the first bending part 211 of one movable contact spring 21 to coordinate in another movable contact spring
11 the first bending part 111 it is recessed in so that between reducing two movable contact springs 11,12 apart from while and increase each
The effective length of movable contact spring.
It is in the second recessed bending part that an one side in thickness is also respectively provided with two movable contact springs in protrusion another side,
That is, movable contact spring 11 is provided with the second bending part 112, and the second bending part 112 is arcuate shape, and movable contact spring 21 is provided with the second bending part
212, the second bending, 212 be arcuate shape, the second bending part 112 of movable contact spring 11 and the second bending part 212 of movable contact spring 21
Protrusion direction is identical, and the bending of the second bending part 112 of movable contact spring 11 is less than the second bending part 212 of one movable contact spring 21
Bending, to enable the protrusion of the second bending part 112 of another movable contact spring 11 to coordinate in one movable contact spring
21 the second bending part 212 it is recessed in；In same movable contact spring, the protrusion direction of the first bending part and the second bending part
Protrusion direction is on the contrary, in movable contact spring 11, the protrusion direction of the protrusion direction of the first bending part 111 and the second bending part 112 is on the contrary, dynamic
In reed 21, the protrusion direction of the protrusion direction of the first bending part 211 and the second bending part 212 is on the contrary, moreover, in same dynamic spring
In piece, the first bending part and the second dogleg section other places are at the two ends of the movable contact spring；Due to the first bending part of movable contact spring 21
211 protrusion be coordinate movable contact spring 11 the first bending part 111 it is recessed in, therefore, the second bending part 112 of movable contact spring 11
Protrusion coordinate movable contact spring 21 the second bending part 212 it is recessed in, to reduce the distance between two movable contact springs and increase
The effective length of each movable contact spring.
First bending part of two movable contact springs, the shape of the second bending part substantially can be U-shaped, n-type or c-type, and bending
The center line of the opening of the U-shaped of portion, n-type or c-type is in substantially vertical with the straight reed of movable contact spring；The shape of U-shaped, n-type or c-type
All it is to meet one side in thickness in protrusion another side in recessed.
In two movable contact springs, the straight reed between the first bending part and the second bending part of one of movable contact spring is to separately
The distance of straight reed between the first bending part and the second bending part of one movable contact spring is less than two movable contact springs in contact position
Put the distance between the straight reed at place；Part between the first bending part 111 and the second bending part 112 of movable contact spring 11 is flat
Straight reed 113, the part between the first bending part 211 and the second bending part 212 of movable contact spring 21 is straight reed 213, moves spring
It is flat at contact position that the distance of the straight reed 113 of piece 11 to the straight reed 213 of movable contact spring 21 is less than two movable contact springs
The distance between straight reed (the distance between reed and reed at stationary contact 24 or movable contact at such as movable contact 12
The distance between reed at reed and stationary contact 14 at 22).
In the present embodiment, straight reed between the first bending part and the second bending part of one of movable contact spring is to another
Between the distance and two the first bending parts of straight reed between the first bending part and the second bending part of individual movable contact spring away from
From and the distance between two the second bending parts it is roughly equal；That is, the first bending part 111 of movable contact spring 11 arrives dynamic spring
The distance of first bending part 211 of piece 21, the second bending part 112 of movable contact spring 11 arrives the second bending part 212 of movable contact spring 21
Distance, the straight reed 113 of movable contact spring 11 is to the distance of the straight reed 213 of movable contact spring 21, and these three are apart from roughly equal.
In the present embodiment, movable contact spring 11 is two single parts with dynamic spring lead-out tablet 13；Movable contact spring 21 is drawn with dynamic spring
Piece 23 is also two single parts；Certainly, movable contact spring and dynamic spring lead-out tablet can also be integral type structure.
In the present embodiment, movable contact spring 11 is overlapped and constituted in a thickness direction by three reeds, and movable contact spring 21 is also by three
Reed overlaps composition in a thickness direction；Certainly, movable contact spring can also be made up of monolithic reed.
In the present embodiment, the movable contact spring 11,12 of two groups of dynamic spring parts with the first bending part and the second bending part
Length and shape it is identical.That is, after movable contact spring 11 and movable contact spring 12 are assembled, the first bending part of movable contact spring 11
111 and movable contact spring 21 the first bending part 211 fit shapes and movable contact spring 21 the second bending part 212 and movable contact spring 11 the
Symmetrical structure centered on the fit shapes of two bending parts 112, in other words, as the first bending part 111 of movable contact spring 11 and dynamic
The fit shapes center symmetrical about of first bending part 211 of reed 21 after 180 degree rotates, and movable contact spring 21 the second folding
Turn of bilge 212 matches with the fit shapes of the second bending part 112 of movable contact spring 11.
The present invention includes pedestal 3, and the dynamic spring lead-out tablet 13,23 of the contact portion is plugged on the pedestal 3 respectively, and
Two dynamic spring lead-out tablets 13,23 are in the both sides of pedestal 3 respectively, and one of them dynamic spring lead-out tablet is current feedthrough, another
Dynamic spring lead-out tablet is electric current exit；Each one end of the dynamic spring lead-out tablet 13,23 is fitted in pedestal 3, and the dynamic spring is drawn
Each other end of piece 13,23 is extended in outside pedestal 3.
In the present embodiment, dynamic spring lead-out tablet 13 is luxuriant provided with a convex for being used for being engaged with pedestal in thickness direction
131, the convex bud 131 is in the opposite one side corresponding to fixed stationary contact 14 and more leaned on than stationary contact 14 in position
Nearly outside, pedestal 3 is provided with the slot 31 for being used for being engaged with the convex bud 131 of dynamic spring lead-out tablet 13；Dynamic spring lead-out tablet 23 exists
Thickness direction is provided with one for the convex bud 231 being engaged with pedestal, and the convex bud 231 is in corresponding to fixed stationary contact
Point 24 identical one side and in position than stationary contact 24 closer to outside, pedestal 3 be additionally provided with for dynamic spring lead-out tablet
The slot 32 that 23 convex bud 231 is engaged.
In the present embodiment, one end end of dynamic spring lead-out tablet 13 is along stretch out a positioning tongue piece 132, the positioning tongue piece 132
Tilt an angle to realize that the bending part 111 to movable contact spring 11 is avoided relative to dynamic spring lead-out tablet 13, position tongue piece 132
Thickness be less than the thickness of dynamic spring lead-out tablet 13, pedestal 3 is provided with the positioning tongue piece 132 being used for dynamic spring lead-out tablet 13
The slot 33 being engaged；One end end of dynamic spring lead-out tablet 23 is along the positioning tongue piece 232 that stretches out, and the positioning tongue piece 232 is relative
Tilt an angle to realize that the bending part 212 to movable contact spring 21 is avoided in dynamic spring lead-out tablet 23, position the thickness of tongue piece 232
The thickness that size is less than dynamic spring lead-out tablet 23 is spent, pedestal 3, which is provided with, to be used for matching with the positioning tongue piece 232 of dynamic spring lead-out tablet 23
The slot 34 of conjunction.
In the present embodiment, the vertical range of the extended line of the opposite side of two dynamic spring lead-out tablets is 4.6mm, its tolerance model
It is -0.1~+0.5mm to enclose, i.e. the opposite side of the extended line of the opposite side 133 of dynamic spring lead-out tablet 13 to dynamic spring lead-out tablet 23
233 vertical range is that 4.6mm (can also be the extended line of opposite side 233 of spring lead-out tablet 23 to dynamic spring lead-out tablet 13
Opposite side 133 vertical range, or the opposite side 133 of dynamic spring lead-out tablet 13 extended line to dynamic spring lead-out tablet 23
Opposite side 233 extended line vertical range), size 4.6mm defines the distance between two dynamic spring lead-out tablets, simultaneously
Also the distance between contact is defined；In described two dynamic spring lead-out tablets, parallel side wall in pedestal closer to a dynamic spring
The opposite side of lead-out tablet is 5.1mm to the size of the outer surface of the parallel side wall, its margin of tolerance is -0.5~+
0.5mm, in dynamic spring lead-out tablet 13 and dynamic spring lead-out tablet 23, parallel side wall 35 in pedestal 3 closer to be that spring is drawn
Piece 13, therefore, the size for the outer surface that the opposite side 133 for moving spring lead-out tablet 13 arrives the parallel side wall 35 is 5.1mm,
Its margin of tolerance is -0.5~+0.5mm, and size 5.1mm has reacted the distance that dynamic spring lead-out tablet 13 arrives one side of pedestal, the chi
It is very little that the position that dynamic spring lead-out tablet 13 is drawn from pedestal, size 4.6mm and size 5.1mm is determined, another dynamic spring can be reacted
The position that lead-out tablet 23 is drawn from pedestal, so, also just determines the essential shape size of relay.
The present invention includes rotary magnetic circuit part 4 and pushing block 5, and rotary magnetic circuit part 4 and pushing block 5 are separately mounted to
In pedestal 3, end of the rotary magnetic circuit part 4 by pushing block 5 respectively with two movable contact springs 11,21 is engaged, with rotation
Formula magnetic circuit part towards one side rotate when, two movable contacts 12,22 is in contact respectively with two stationary contacts 24,14, and rotation
Formula magnetic circuit part towards another side rotate when, two movable contacts 12,22 is separated respectively with two stationary contacts 24,14.
The a kind of of the present invention can resist the magnetic latching relay of short circuit current flow, employ in two movable contact springs 11,21
Be respectively provided with an one side in thickness in protrusion another side be in the first recessed bending part 111,211, and the first bending part 111,
211 be arcuate shape, and the protrusion direction of two the first bending parts 111,211 is identical, the first bending of one of movable contact spring 21
The bending in portion 211 is less than the bending of the first bending part 111 of another movable contact spring 11, to cause the of one movable contact spring 21
The protrusion of one bending part 211 can coordinate another movable contact spring 11 the first bending part 111 it is recessed in so that reduce two
While the distance between individual movable contact spring and increase the effective length of each movable contact spring.This structure of the present invention, on the one hand, profit
With the bending of setting reed to increase movable contact spring elasticity, so as to increase contact force, on the other hand, the special knot of kink is utilized
Structure (protrusion coordinates in recessed), shortens the distance between two movable contact springs, so as to increase suction, simultaneously as reed is bent
After make movable contact spring effective length longer, so as to further increase suction, make suction bigger.
The a kind of of the present invention can resist the magnetic latching relay of short circuit current flow, employ in two movable contact springs 11,21
It is respectively equipped with the first bending part 111,211 and the second bending part 112,212, and the first bending part 111,211 and the second bending part
112nd, 212 be arcuate shape, the protrusion direction all same of the first bending part and the second bending part in two movable contact springs, and
In same movable contact spring, the protrusion direction of the first bending part is opposite with the protrusion direction of the second bending part.This knot of the present invention
Structure, because each movable contact spring is equipped with bending at two, can greatly increase movable contact spring elasticity, so that contact force is greatly increased,
Movable contact spring effective length is further increased, so as to further increase suction, make suction increase bigger, moreover, not only can be with
Shorten the distance of bending position at the two of two movable contact springs, the position between bending at two of two movable contact springs can also be shortened
Distance, so as to further increase suction.
The a kind of of the present invention can resist the magnetic latching relay of short circuit current flow, employ and set respectively in two movable contact springs
There are the first bending part and the second bending part, and the movable contact spring of two groups with the first bending part and the second bending part dynamic spring parts
Length and shape are identical.This structure of the present invention, the equal length of two groups of movable contact springs, shape is consistent, is both easy to make,
It also ensure that the uniformity of two groups of dynamic spring performances.
The a kind of of the present invention can resist the magnetic latching relay of short circuit current flow, employ dynamic spring lead-out tablet 13,23 in thickness
Degree direction is used for the convex bud 131,231 that is engaged with pedestal provided with one, one end end of dynamic spring lead-out tablet 13,23 along to
The certain position tongue piece 132,232 of outer extension, and positioning tongue piece 132,232 relative to dynamic spring lead-out tablet 13,23 tilt an angle with
Realize and the bending part of movable contact spring is avoided.This structure of the present invention, passes through the Reasonable Orientation to moving spring lead-out tablet, it is to avoid
During product use, because without reliable positioning, under temperature, the effect of the extraneous stress of vibratory impulse, moving spring lead-out tablet
Because loosening, coming off, cause the drawbacks of product function fails.
Above-mentioned simply presently preferred embodiments of the present invention, not makees any formal limitation to the present invention.Although of the invention
It is disclosed above with preferred embodiment, but it is not limited to the present invention.Any those skilled in the art, are not taking off
In the case of from technical solution of the present invention scope, all technical solution of the present invention is made perhaps using the technology contents of the disclosure above
More possible variation and modification, or it is revised as equivalents equivalent embodiment.Therefore, it is every without departing from technical solution of the present invention
Content, according to the technology of the present invention essence to any simple modifications, equivalents, and modifications made for any of the above embodiments, all should fall
In the range of technical solution of the present invention protection.
Claims (20)
1. a kind of can resist the magnetic latching relay of short circuit current flow, including contact portion；The contact portion by two groups substantially
The dynamic spring part being parallel to each other is constituted；Described two groups dynamic spring parts include movable contact spring, movable contact, dynamic spring lead-out tablet and stationary contact respectively
Point；The movable contact is connected to one end of the movable contact spring, and the other end of the movable contact spring connects the one of the dynamic spring lead-out tablet
End, the stationary contact is connected to the end of the dynamic spring lead-out tablet；Two movable contacts of dynamic spring part respectively with two stationary contacts
Point is corresponding, to form parallel circuit structure in dynamic and static contact；It is characterized in that：It is respectively provided with two movable contact springs
One one side in thickness is in the first recessed bending part in protrusion another side, and the protrusion direction of two the first bending parts is identical,
The bending of first bending part of one of movable contact spring is less than the bending of the first bending part of another movable contact spring, described to cause
The protrusion of first bending part of one movable contact spring can coordinate another movable contact spring the first bending part it is recessed in so that
While reducing the distance between two movable contact springs and increase the effective length of each movable contact spring.
2. according to claim 1 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：In two dynamic springs
It is in the second recessed bending part that an one side in thickness is also respectively provided with piece in protrusion another side, two the second bending parts it is convex
Outgoing direction is identical, and the bending of the second bending part of another movable contact spring is less than the second bending part of one movable contact spring
Bending, to cause the protrusion of the second bending part of another movable contact spring to coordinate the second folding in one movable contact spring
Turn of bilge it is recessed in, to reduce the distance between two movable contact springs and increase the effective length of each movable contact spring.
3. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：First folding
Turn of bilge, the second bending part are arcuate shape.
4. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described two dynamic
First bending part of reed, the second bending part are generally shaped like U-shaped, n-type or c-type, and the U-shaped of bending part, n-type or c-type
The center line of opening is in substantially vertical with the straight reed of movable contact spring.
5. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：Two movable contact springs
In, the of straight reed between the first bending part and the second bending part of one movable contact spring to another movable contact spring
The distance of straight reed between one bending part and the second bending part is less than straight reed of two movable contact springs at contact position
The distance between.
6. according to claim 5 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is one dynamic
Straight reed between the first bending part and the second bending part of reed is to the first bending part of another movable contact spring and the
Between the distance between the distance of straight reed between two bending parts and two the first bending parts and two the second bending parts
Distance it is roughly equal.
7. according to claim 1 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is dynamic at same group
In spring part, the stationary contact is connected to the joint of the other end of the movable contact spring and one end of the dynamic spring lead-out tablet.
8. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：Same dynamic
In reed, the protrusion direction of the first bending part is opposite with the protrusion direction of the second bending part.
9. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：Same dynamic
In reed, the first bending part and the second dogleg section other places are at the two ends of the movable contact spring.
10. according to claim 1 or 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described dynamic
Reed is two single parts with dynamic spring lead-out tablet.
11. according to claim 1 or 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described dynamic
Reed is integral type structure with dynamic spring lead-out tablet.
12. according to claim 1 or 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described dynamic
Reed is made up of monolithic reed.
13. according to claim 1 or 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described dynamic
Reed is overlapped and constituted in a thickness direction by two or two with upper reed plate.
14. it can resist the magnetic latching relay of short circuit current flow according to Claims 2 or 3 or 8, it is characterised in that：Institute
The length and shape for stating the movable contact spring of two groups of dynamic spring parts with the first bending part and the second bending part are identical.
15. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：Further,
Also include pedestal, the dynamic spring lead-out tablet of the contact portion is plugged on the pedestal, and two dynamic spring lead-out tablets are in respectively
The both sides of pedestal, one of them dynamic spring lead-out tablet is current feedthrough, and another dynamic spring lead-out tablet is electric current exit；Described two
Each one end of individual dynamic spring lead-out tablet is fitted in pedestal respectively, and each other end of described two dynamic spring lead-out tablets is each extended in base
Seat is outer.
16. according to claim 15 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described two
Dynamic spring lead-out tablet is respectively equipped with a convex bud for being used for being engaged with pedestal in thickness direction, the pedestal be provided be used for
The slot that the convex bud of corresponding dynamic spring lead-out tablet is engaged.
17. according to claim 16 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described two
Each one end end of dynamic spring lead-out tablet is along the positioning tongue piece that stretches out respectively, and the positioning tongue piece is tilted relative to dynamic spring lead-out tablet
One angle is to realize that the bending part to movable contact spring is avoided.
18. according to claim 17 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：The positioning
The thickness of tongue piece is less than the thickness of dynamic spring lead-out tablet.
19. according to claim 15 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：It is described two
The vertical range of the extended line of the opposite side of dynamic spring lead-out tablet is 4.6mm, and its margin of tolerance is -0.1~+0.5mm；Described two
In individual dynamic spring lead-out tablet, parallel side wall in pedestal closer to a dynamic spring lead-out tablet the opposite side to described flat
The size of the outer surface of row side wall is 5.1mm, and its margin of tolerance is -0.5~+0.5mm.
20. according to claim 2 can resist the magnetic latching relay of short circuit current flow, it is characterised in that：Further, also
Including rotary magnetic circuit part and pushing block, end of the rotary magnetic circuit part by pushing block respectively with described two movable contact springs
It is engaged, when rotary magnetic circuit part rotates towards one side, two movable contacts can be made to be in contact respectively with two stationary contacts, and
When rotary magnetic circuit part rotates towards another side, two movable contacts are made to be separated respectively with two stationary contacts.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213323.2A CN106971913B (en) | 2017-04-01 | 2017-04-01 | A kind of magnetic latching relay that can resist short circuit current |
| PCT/CN2018/081417 WO2018177428A1 (en) | 2017-04-01 | 2018-03-30 | Magnetic latching relay capable of resisting short-circuit current |
| ES18777975T ES2909873T3 (en) | 2017-04-01 | 2018-03-30 | Magnetic latching relay capable of withstanding short-circuit current |
| BR112019020619-1A BR112019020619B1 (en) | 2017-04-01 | 2018-03-30 | MAGNETIC LOCKING RELAY CAPABLE OF RESISTING SHORT CIRCUIT CURRENT |
| PL18777975T PL3608938T3 (en) | 2017-04-01 | 2018-03-30 | Magnetic latching relay capable of resisting short-circuit current |
| EP18777975.6A EP3608938B1 (en) | 2017-04-01 | 2018-03-30 | Magnetic latching relay capable of resisting short-circuit current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710213323.2A CN106971913B (en) | 2017-04-01 | 2017-04-01 | A kind of magnetic latching relay that can resist short circuit current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106971913A true CN106971913A (en) | 2017-07-21 |
| CN106971913B CN106971913B (en) | 2018-09-21 |
Family
ID=59336781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710213323.2A Active CN106971913B (en) | 2017-04-01 | 2017-04-01 | A kind of magnetic latching relay that can resist short circuit current |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3608938B1 (en) |
| CN (1) | CN106971913B (en) |
| ES (1) | ES2909873T3 (en) |
| PL (1) | PL3608938T3 (en) |
| WO (1) | WO2018177428A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108321036A (en) * | 2018-03-30 | 2018-07-24 | 厦门宏发电声股份有限公司 | A kind of electromagnetic relay that can resist thunder-strike current |
| WO2018177428A1 (en) * | 2017-04-01 | 2018-10-04 | 厦门宏发电力电器有限公司 | Magnetic latching relay capable of resisting short-circuit current |
| CN110853998A (en) * | 2019-11-25 | 2020-02-28 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker contact system |
| CN112563079A (en) * | 2020-11-30 | 2021-03-26 | 武汉同力同为科技有限公司 | Movable contact bridge retaining structure of short-circuit resistance improving switch device |
| CN114999845A (en) * | 2022-04-26 | 2022-09-02 | 国网浙江省电力有限公司电力科学研究院 | Intelligent reclosing system based on transformer vibration characteristic in short-circuit fault |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090318000A1 (en) * | 2004-04-30 | 2009-12-24 | Dialight Blp Limited | Electrical Contactor |
| CN201435353Y (en) * | 2009-06-22 | 2010-03-31 | 厦门宏发电力电器有限公司 | Magnetic latching relay of rotary magnetic circuit structure |
| CN103493166A (en) * | 2011-02-11 | 2014-01-01 | Clodi公司 | Bi-stable electromagnetic relay with x-drive motor |
| CN105047482A (en) * | 2014-05-01 | 2015-11-11 | 德昌电机(深圳)有限公司 | Electrical contactor and method for controlling time delay closing and opening of the same |
| CN205354968U (en) * | 2015-12-01 | 2016-06-29 | 贵州振华群英电器有限公司（国营第八九一厂） | High -power sealed relay of bridge type conversion double gap |
| CN106504949A (en) * | 2016-11-25 | 2017-03-15 | 厦门宏发电力电器有限公司 | A kind of magnetic latching relay that can resist short circuit current flow |
| CN206657780U (en) * | 2017-04-01 | 2017-11-21 | 厦门宏发电力电器有限公司 | The magnetic latching relay of short circuit current can be resisted |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715261C1 (en) * | 1997-04-12 | 1998-12-10 | Gruner Ag | Relay |
| JP4116022B2 (en) * | 2005-07-11 | 2008-07-09 | ウチヤ・サーモスタット株式会社 | Electromagnetic relay |
| ITRM20120279A1 (en) * | 2012-06-15 | 2013-12-16 | Bitron Spa | PERFECT RELAY. |
| CN203415505U (en) * | 2013-08-10 | 2014-01-29 | 长沙中坤电气科技有限公司 | Relay reed assembly with high flexibility, and relay |
| CN104362044B (en) * | 2014-10-28 | 2017-01-18 | 浙江正泰电器股份有限公司 | Relay capable of preventing large-current contact separation |
| CN106971913B (en) * | 2017-04-01 | 2018-09-21 | 厦门宏发电力电器有限公司 | A kind of magnetic latching relay that can resist short circuit current |
-
2017
- 2017-04-01 CN CN201710213323.2A patent/CN106971913B/en active Active
-
2018
- 2018-03-30 EP EP18777975.6A patent/EP3608938B1/en active Active
- 2018-03-30 PL PL18777975T patent/PL3608938T3/en unknown
- 2018-03-30 WO PCT/CN2018/081417 patent/WO2018177428A1/en unknown
- 2018-03-30 ES ES18777975T patent/ES2909873T3/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090318000A1 (en) * | 2004-04-30 | 2009-12-24 | Dialight Blp Limited | Electrical Contactor |
| CN201435353Y (en) * | 2009-06-22 | 2010-03-31 | 厦门宏发电力电器有限公司 | Magnetic latching relay of rotary magnetic circuit structure |
| CN103493166A (en) * | 2011-02-11 | 2014-01-01 | Clodi公司 | Bi-stable electromagnetic relay with x-drive motor |
| CN105047482A (en) * | 2014-05-01 | 2015-11-11 | 德昌电机(深圳)有限公司 | Electrical contactor and method for controlling time delay closing and opening of the same |
| CN205354968U (en) * | 2015-12-01 | 2016-06-29 | 贵州振华群英电器有限公司（国营第八九一厂） | High -power sealed relay of bridge type conversion double gap |
| CN106504949A (en) * | 2016-11-25 | 2017-03-15 | 厦门宏发电力电器有限公司 | A kind of magnetic latching relay that can resist short circuit current flow |
| CN206657780U (en) * | 2017-04-01 | 2017-11-21 | 厦门宏发电力电器有限公司 | The magnetic latching relay of short circuit current can be resisted |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018177428A1 (en) * | 2017-04-01 | 2018-10-04 | 厦门宏发电力电器有限公司 | Magnetic latching relay capable of resisting short-circuit current |
| CN108321036A (en) * | 2018-03-30 | 2018-07-24 | 厦门宏发电声股份有限公司 | A kind of electromagnetic relay that can resist thunder-strike current |
| CN108321036B (en) * | 2018-03-30 | 2023-05-23 | 厦门宏发电声股份有限公司 | Electromagnetic relay capable of resisting lightning stroke current |
| CN110853998A (en) * | 2019-11-25 | 2020-02-28 | 常熟开关制造有限公司(原常熟开关厂） | Circuit breaker contact system |
| CN112563079A (en) * | 2020-11-30 | 2021-03-26 | 武汉同力同为科技有限公司 | Movable contact bridge retaining structure of short-circuit resistance improving switch device |
| CN112563079B (en) * | 2020-11-30 | 2024-02-20 | 武汉同力同为科技有限公司 | Movable contact bridge retaining structure of short-circuit resistance lifting switch device |
| CN114999845A (en) * | 2022-04-26 | 2022-09-02 | 国网浙江省电力有限公司电力科学研究院 | Intelligent reclosing system based on transformer vibration characteristic in short-circuit fault |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018177428A1 (en) | 2018-10-04 |
| EP3608938A1 (en) | 2020-02-12 |
| EP3608938B1 (en) | 2022-03-02 |
| EP3608938A4 (en) | 2020-12-23 |
| PL3608938T3 (en) | 2022-05-30 |
| CN106971913B (en) | 2018-09-21 |
| ES2909873T3 (en) | 2022-05-10 |
| BR112019020619A2 (en) | 2020-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106971913A (en) | It is a kind of to resist the magnetic latching relay of short circuit current flow | |
| CN206657780U (en) | The magnetic latching relay of short circuit current can be resisted | |
| CN104091706B (en) | A kind of relay and arc protection structure thereof | |
| CN107305824B (en) | A kind of electromagnetic relay with stronger resist blocking and that ability | |
| CN106504949A (en) | A kind of magnetic latching relay that can resist short circuit current flow | |
| CN106548912B (en) | Breaker | |
| CN207134306U (en) | A kind of RCCB | |
| CN103441391B (en) | A kind of travelling conversion plug | |
| CN108321036A (en) | A kind of electromagnetic relay that can resist thunder-strike current | |
| CN210778464U (en) | Contact mechanism of circuit breaker | |
| CN204809158U (en) | Bridge type double break point DC electromagnetic contactor | |
| CN207800458U (en) | A kind of rocker switch | |
| CN208225797U (en) | A kind of outdoor high-voltage alternating-current vacuum breaker | |
| CN203983083U (en) | A kind of relay | |
| CN206322647U (en) | The magnetic latching relay of short circuit current flow can be resisted | |
| CN109326463A (en) | A kind of electric appliance component | |
| CN205582864U (en) | Miniature circuit breaker | |
| CN112133605A (en) | Contactor arc extinguishing system | |
| CN2906869Y (en) | Master/slave electric connection structure | |
| CN207690739U (en) | A kind of buckle releaser of miniature circuit breaker | |
| CN207338255U (en) | Galvanic circle with electric power compensation function | |
| CN208848812U (en) | Rotary isolation switch contact module structure | |
| CN208461385U (en) | A kind of adapter coupling of wire casing and spool | |
| CN209561247U (en) | A kind of auxiliary device of disconnecting switch | |
| CN207082490U (en) | Electromagnetic residual current acting breaker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |