CN106971913B - A kind of magnetic latching relay that can resist short circuit current - Google Patents
A kind of magnetic latching relay that can resist short circuit current Download PDFInfo
- Publication number
- CN106971913B CN106971913B CN201710213323.2A CN201710213323A CN106971913B CN 106971913 B CN106971913 B CN 106971913B CN 201710213323 A CN201710213323 A CN 201710213323A CN 106971913 B CN106971913 B CN 106971913B
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- movable contact
- bending part
- spring
- dynamic
- short circuit
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- 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
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- 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
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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
- H01H1/24—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
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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
- H01H1/24—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
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- 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
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- 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 invention discloses a kind of magnetic latching relays that can resist short circuit current, including contact portion；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 in 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, so that the protrusion of the first bending part of one movable contact spring can coordinate another movable contact spring the first bending part it is recessed in, 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.
Description
Technical field
The present invention relates to relay technical fields, and relay is kept more particularly to a kind of magnetic that can resist short circuit current
Device.
Background technology
The structure of existing magnetic latching relay is made of magnetic circuit system, contact system, pushing mechanism and pedestal.Magnetic circuit system
It is generally made of the magnetic circuit of two almost symmetries, including static magnetic conduction body component, movable magnetic conduction body component and coil, contact system
Including dynamic spring part, quiet spring part, pushing mechanism is generally taken on by pushing block.Relay coil leads to direct impulse voltage, magnetic circuit
System works, and pushing block, which pushes, moves spring part, and sound contact, the actuating of relay, coil is made to lead to reverse impulse voltage, magnetic circuit
System works, and pushing block, which pushes, moves spring part, so that sound contact is disconnected, relay involution.
Magnetic latching relay main application fields are electric-power metering, and major function is switch and metering.With countries in the world
Electric network reconstruction deepens continuously, and since the fried table of the ammeter of short circuit current initiation, the case caught fire happen occasionally, has caused huge
Human safety issues and property loss problem.In this context, major Utilities Electric Co. of the world, ammeter enterprise launch respectively related mark
Accurate or reference professional standard, short circuit current ability is resisted with its specification electric energy meter power magnetic latching relay, improves intelligence electricity
The safety 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.According to operation of power networks feature and based on to the person, equipment safety consideration, magnetic latching relay resists short circuit
There are three types of operating modes for electric current, specific as follows：
Operating mode one：Ammeter front end (upstream power grid) short circuit, is characterized in magnetic latching relay contact closure (ammeter combined floodgate shape
State), short circuit current is larger, and short circuit current at this time is known as " safety tolerance short circuit current ", it is desirable that magnetic latching relay bears short
It is when the electric current of road or rear " do not explode, is not on fire, without splash ".
Operating mode two：Ammeter rear end (downstream power grid) short circuit, is characterized in magnetic latching relay contact closure (ammeter combined floodgate shape
State), short circuit current is smaller, and short circuit current at this time is known as " function tolerance short circuit current ", it is desirable that magnetic latching relay bears short
After the electric current of road " function is normal ".
Operating mode three：Ammeter rear end (downstream power grid) short circuit is characterized in that magnetic latching relay contact disconnects that (ammeter is operated a switch shape
State), short circuit current is smaller, and short circuit current at this time is known as " function connection short circuit current ", it is desirable that magnetic latching relay is connected short
After the electric current of road " function is normal ".
Under three kinds of operating modes, short circuit current difference in size is larger, such as " the safety tolerance short circuit of IEC62055-31 standard UC2 grades
Electric current " is 4.5KA, is 1.8 times of " function tolerance short circuit current " or " function connection short circuit current " 2.5KA；UC3 grades " peace
Full tolerance short circuit current " is 6KA, is 2 times of " function tolerance short circuit current " or " function connection short circuit current " 3KA；For another example
ANSI C12.1 standard 200A rated current grade " safety tolerance short circuit current " peak value 24KA, is " function tolerance short circuit current "
3.4 times of peak value 7KA.
It develops with the magnetic latching relay product for resisting short circuit current ability, must just improve dynamic and static contact and close
The pressure of conjunction, to offset electrodynamic repulsion force when short circuit current passes through contact.The pressure of dynamic and static contact closure is improved, will certainly be increased
The appearance and size of big product, the power consumption for increasing coil control section cannot be satisfied client to product design miniaturization and low-power consumption
Requirement, meanwhile, product cost can suddenly gather rising, cause product market competition ability decline.
In order to solve the above-mentioned technical problem, existing magnetic latching relay is that Lorentz force original is utilized in structure design
Reason is touched to resist short circuit current dynamic and static using one times of short circuit current in the electromagnetic force that can be generated on movable contact spring (movable contact spring)
The electrodynamic repulsion force generated between point.Concrete scheme design when, short circuit current size between two reeds at a distance from it is closely related, resist it is short
The effect of road electric current and reed deflection (rigidity) are closely related.Due to " safety tolerance short circuit current " and " function tolerance short circuit
Electric current " or " function connection short circuit current " difference are larger, meet the design scheme of " safety tolerance short circuit current ", differ surely simultaneous
Hold " function tolerance short circuit current " or " function connection short circuit current ", vice versa.With into meeting the design scheme of UC3 standards
Not necessarily backward compatible UC2 standards.
There are two types of the main technological routes for solving magnetic latching relay resistance short circuit current function in the prior art, is profit
With one times of short circuit current flow through can movable contact spring (i.e. movable contact spring) and can movable contact spring lead-out tablet (i.e. dynamic spring lead-out tablet), and movable
The electromagnetic force that is generated on reed (i.e. movable contact spring) resists the electrodynamic repulsion force that short circuit current generates between dynamic and static contact, flows through quiet
Only the short circuit current 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 generated when opposite with movable contact spring current direction using dynamic spring lead-out tablet come resist it is dynamic,
Static contact passes through the electric power generated when 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 current direction in circuit, to increase the pressure between dynamic and static contact ", which is realized, resists short circuit current function.
This scheme for resisting short circuit current structure just like disclosed by Chinese patent CN201210306861.9, being dynamic using two groups
Spring Parallel Design, using electric current with to attracting principle, to increase contact pressure, still, the shortcoming of this structure is：
Movable contact spring effective length is short, and counter-force is big, and the distance between two groups of dynamic spring parts are in, close contact position smaller far from contact position
It is larger, the drawbacks of electromagnetic attraction for causing contact position is smaller, and electromagnetic attraction is unevenly distributed, moreover, because close
The position of contact is equipped with bending, can cause the structure of similar seesaw, be easy that the reed of contact position is made to stick up outward instead, instead
It is the pressure for reducing contact.Two such as Chinese patent CN201280008648.2 institutes of this scheme for resisting short circuit current structure
It discloses, and using two groups of dynamic spring Parallel Designs, using electric current with to attracting principle, to increase contact pressure, still,
The shortcoming 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 cause electromagnetic attraction smaller apart from larger, moreover, the elasticity of spring leaf of this structure is small, to the pressure of contact also compared with
It is small.
Invention content
It is an object of the invention to overcome the deficiency of the prior art, provide it is a kind of can resist short circuit current magnetic keep after
Electric appliance is based on using the identical generation electromagnetic attraction of current direction in shunt circuit, to increase the base of the pressure between dynamic and static contact
On plinth, by the structure improvement 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, resists short circuit current.
The technical solution adopted by the present invention to solve the technical problems is：It is a kind of can resist short circuit current magnetic keep after
Electric appliance, 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
Respectively include movable contact spring, movable contact, dynamic spring lead-out tablet and stationary contact；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；Be respectively provided in two movable contact springs an one side in thickness in protrusion another side be in the first recessed bending part, two
The protrusion direction of a 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, so that the protrusion of the first bending part of one movable contact spring can coordinate in another movable contact spring
The first bending part it is recessed in, 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 in 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, so that the protrusion of the second bending part of another movable contact spring can 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-shaped or c-type, and bending
The center line of the opening of the U-shaped of portion, N-shaped or c-type is with the straight reed of movable contact spring in substantially vertical.
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.
It is moved in spring part at same group, the stationary contact is connected to the other end of the movable contact spring and the dynamic spring lead-out tablet
One end joint.
In the same movable contact spring, the protrusion direction of the first bending part is opposite with the protrusion direction of the second bending part.
In the same movable contact spring, the first bending part and the second dogleg section other places are at the both ends of the movable contact spring.
The movable contact spring is two individual parts with dynamic spring lead-out tablet.
The movable contact spring is an integral structure with dynamic spring lead-out tablet.
The movable contact spring is made of monolithic reed.
The movable contact spring is overlapped by two or two with upper reed plate and is constituted in a thickness direction.
The length and shape for having two groups of movable contact springs for moving spring part of the first bending part and the second bending part are complete
It is identical.
Further, further include 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, 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 described two dynamic spring lead-out tablets fits in pedestal respectively, described two dynamic spring lead-out tablets it is each
The other end each extends over outside pedestal.
Described two dynamic spring lead-out tablets are respectively equipped with one in thickness direction and are used for and the matched convex bud of pedestal, institute
It states pedestal and is equipped with and be used for and the matched slot of the convex of corresponding dynamic spring lead-out tablet bud.
Along the positioning tongue piece that extends outwardly respectively, the positioning tongue piece is opposite at each one end end of described two dynamic spring lead-out tablets
An angle is tilted to realize that the bending part to movable contact spring avoids 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, the 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 the margin of tolerance is -0.5~+0.5mm.
Further, further include 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 matches, when rotary magnetic circuit part is rotated towards one side, can make two movable contacts and two
Stationary contact is in contact respectively, and when rotary magnetic circuit part is rotated towards another side, make 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：
1, the present invention is in protrusion another side as a result of an one side in thickness is respectively provided in 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, so that the protrusion energy of the first bending part of one movable contact spring
Enough cooperations another movable contact spring the first bending part it is recessed in, 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, it is dynamic to increase that setting reed bending is utilized
On the other hand elasticity of spring leaf, utilizes the special construction (protrusion cooperation is in recessed) of bending part, contracting to increase contact force
The distance between short two movable contact springs, to increase suction, simultaneously as keep movable contact spring effective length longer after reed bending,
To further increase suction, make suction bigger.
2, 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 the 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, since each movable contact spring is equipped with
Bending at two can greatly increase movable contact spring elasticity, to greatly increase contact force, movable contact spring effective length be made further to increase
It is long, to further increase suction, so that suction is increased 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 the bending at two of two movable contact springs, to further increase suction.
3, 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, has both been convenient for making, and also ensures the consistency of two groups of dynamic spring performances.
4, the present invention as a result of dynamic spring lead-out tablet thickness direction set there are one be used for and the matched positioning of pedestal
Convex bud at one end end of dynamic spring lead-out tablet along the positioning tongue piece that extends outwardly, and positions tongue piece and is tilted relative to dynamic spring lead-out tablet
One angle is to realize that the bending part to movable contact spring avoids.This structure of the present invention passes through the conjunction to moving spring lead-out tablet
Reason positioning, avoids during product use, because being positioned without reliable, under temperature, the effect of the extraneous stress of vibratory impulse,
Dynamic spring lead-out tablet is because of the drawbacks of loosening, falling off, product function is caused to fail.
Invention is further described in detail with reference to the accompanying drawings and embodiments；But one kind of the present invention can resist short
The magnetic latching relay of road electric current is not limited to embodiment.
Description of the drawings
Fig. 1 is the structural schematic diagram of the contact portion of the embodiment present invention；
Fig. 2 be the embodiment present invention contact portion and magnetic circuit part, pushing block between the signal of matched D structure
Figure；
Fig. 3 is that the contact portion of the embodiment present invention matches the knot of (contact closure) between magnetic circuit part, pushing block
Structure schematic diagram；
Fig. 4 is that the contact portion of the embodiment present invention matches (contact disconnection) between magnetic circuit part, pushing block
Structural schematic diagram；
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 vertical view of the dynamic spring part of the embodiment present invention；
Fig. 8 is the D structure decomposition diagram 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 be the embodiment present invention contact portion and magnetic circuit part, pushing block, pedestal between matched three-dimensional structure
Make schematic diagram；
Figure 11 be the embodiment present invention contact portion and magnetic circuit part, pushing block, pedestal between matched vertical view.
Specific implementation mode
Embodiment
Shown in Fig. 1 to Figure 11, a kind of magnetic latching relay that can resist short circuit current of the invention, including contact
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, moves
Contact 12, dynamic spring lead-out tablet 13 and stationary contact 14, it includes movable contact spring 21, movable contact 22, dynamic spring lead-out tablet 23 and quiet to move spring part 2
Contact 24；Movable contact 12 is connected to one end of movable contact spring 11, and one end of spring lead-out tablet 13 is moved in the other end connection of movable contact spring 11, quiet
Contact 14 is connected to the at one end of dynamic spring lead-out tablet 13, and in the present embodiment, 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 spring lead-out tablet 23 is moved in one end connection, and stationary contact 24 is connected to the at one end of dynamic spring lead-out tablet 23, and stationary contact 24 is connection
Joint in one end of the other end and dynamic spring lead-out tablet 23 of 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, move
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, in dynamic and static contact
Form parallel circuit structure；It is in recessed first that an one side in thickness is respectively provided in two movable contact springs in protrusion another side
Bending part, movable contact spring 11 are equipped with the first bending part 111, and the first bending part 111 is arcuate shape, movable contact spring 21 is equipped with the first folding
Turn of bilge 211, the first bending part 211 are arcuate shape, and the first bending part 111 of movable contact spring 11 and the first bending of movable contact spring 21
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, so that the protrusion of the first bending part 211 of one movable contact spring 21 can coordinate in another movable contact spring
11 the first bending part 111 it is recessed in, 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 in two movable contact springs in protrusion another side,
That is, movable contact spring 11 is equipped with the second bending part 112, the second bending part 112 is arcuate shape, and movable contact spring 21 is equipped 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 so that the protrusion of the second bending part 112 of another movable contact spring 11 can coordinate in one movable contact spring
21 the second bending part 212 it is recessed in；In the 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, and the protrusion direction of 111 protrusion direction of the first bending part and the second bending part 112 is on the contrary, dynamic
In reed 21, the protrusion direction of 211 protrusion direction of the first bending part and the second bending part 212 is on the contrary, moreover, in the same dynamic spring
In piece, the first bending part and the second dogleg section other places are at the both 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 cooperation 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-shaped or c-type, and bending
The center line of the opening of the U-shaped of portion, N-shaped or c-type is with the straight reed of movable contact spring in substantially vertical；The shape of U-shaped, N-shaped 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
Set 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 are straight reed 213, move 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 (such as the distance between reed and reed at stationary contact 24 at movable contact 12, can also be movable contact
The distance between reed and reed at 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 a 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 arrive the second bending part 212 of movable contact spring 21
Distance, the straight reed 113 of movable contact spring 11 arrive the distance of the straight reed 213 of movable contact spring 21, these three are apart from roughly equal.
In the present embodiment, movable contact spring 11 is two individual parts with dynamic spring lead-out tablet 13；Movable contact spring 21 is drawn with dynamic spring
Piece 23 is also two individual parts；Certainly, movable contact spring and dynamic spring lead-out tablet may be integral structure.
In the present embodiment, movable contact spring 11 is overlapped by three pieces reed and is constituted in a thickness direction, and movable contact spring 21 is also by three pieces
Reed overlaps composition in a thickness direction；Certainly, movable contact spring can also be made of monolithic reed.
In the present embodiment, two groups of movable contact springs 11,12 for moving spring part 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 assemble, 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 is after 180 degree rotates and the second folding of movable contact spring 21
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 respectively on the pedestal 3, and
Two dynamic spring lead-out tablets 13,23 are in the both sides of pedestal 3 respectively, 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 fits in pedestal 3, and the dynamic spring is drawn
Each other end of piece 13,23 extends in outside pedestal 3.
In the present embodiment, dynamic spring lead-out tablet 13 sets that there are one be used for and the matched convex bud of pedestal in thickness direction
131, which is in the opposite one side corresponding to fixed stationary contact 14 and is more leaned on than stationary contact 14 in position
Nearly outside, pedestal 3, which is equipped with, to be used for and the luxuriant 131 matched slots 31 of the convex of dynamic spring lead-out tablet 13；Dynamic spring lead-out tablet 23 exists
Thickness direction is used for being in corresponding to fixed stationary contact with the matched convex bud 231 of pedestal, the convex bud 231 there are one setting
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 luxuriant 231 matched slots 32 of 23 convex.
In the present embodiment, one end end of dynamic spring lead-out tablet 13 is along the positioning tongue piece 132 that extends outwardly, the positioning tongue piece 132
An angle is tilted to realize that the bending part 111 to movable contact spring 11 avoids relative to dynamic spring lead-out tablet 13, positions tongue piece 132
Thickness be less than the thickness of dynamic spring lead-out tablet 13, pedestal 3 is equipped with the positioning tongue piece 132 being used for dynamic spring lead-out tablet 13
Matched slot 33；Along the positioning tongue piece 232 that extends outwardly, the positioning tongue piece 232 is opposite at one end end of dynamic spring lead-out tablet 23
An angle is tilted to realize that the bending part 212 to movable contact spring 21 avoids in dynamic spring lead-out tablet 23, positions 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 equipped 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, tolerance model
It is -0.1~+0.5mm to enclose, that is, 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 the opposite side 233 of dynamic spring lead-out tablet 23 to dynamic spring lead-out tablet 13
Opposite side 133 vertical range or dynamic spring lead-out tablet 13 opposite side 133 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 size of the opposite side of lead-out tablet to the outer surface of the parallel side wall is 5.1mm, the 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 moving the opposite side 133 to the outer surface of the parallel side wall 35 of spring lead-out tablet 13 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 ruler
It is very little that dynamic spring lead-out tablet 13 is determined from the position that pedestal is drawn, size 4.6mm and size 5.1mm, another dynamic spring can be reacted
Lead-out tablet 23 is from the position that pedestal is drawn, in this way, also just determining 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, rotary magnetic circuit part 4 is matched with the end of two movable contact springs 11,21 respectively by pushing block 5, to rotate
When formula magnetic circuit part is rotated towards one side, two movable contacts 12,22 is made to be in contact respectively with two stationary contacts 24,14, and rotated
When formula magnetic circuit part is rotated towards another side, two movable contacts 12,22 is made to be separated respectively with two stationary contacts 24,14.
A kind of magnetic latching relay that can resist short circuit current of the present invention, uses 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, so that 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, to reduce two
While the distance between a movable contact spring and increase the effective length of each movable contact spring.This structure of the present invention, on the one hand, profit
It is bent with setting reed to increase movable contact spring elasticity, to increase contact force, on the other hand, utilizes the special knot of bending part
Structure (protrusion cooperation is in recessed), shortens the distance between two movable contact springs, to increase suction, simultaneously as reed is bent
After keep movable contact spring effective length longer, to further increase suction, make suction bigger.
A kind of magnetic latching relay that can resist short circuit current of the present invention, uses 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
112,212 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 the 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 can greatly increase movable contact spring elasticity since each movable contact spring is equipped with bending at two, to greatly increase contact force,
So that movable contact spring effective length is further increased, to further increasing suction, suction is made to increase bigger, moreover, not only can be with
The distance for shortening bending position at the two of two movable contact springs can also shorten position between the bending at two of two movable contact springs
Distance, to further increase suction.
A kind of magnetic latching relay that can resist short circuit current of the present invention, uses and is set respectively in two movable contact springs
There are the first bending part and the second bending part, and there is the movable contact spring of two groups of dynamic spring parts of the first bending part and the second bending part
Length and shape are identical.This structure of the present invention, the equal length of two groups of movable contact springs, shape is consistent, has both been convenient for making,
Also ensure the consistency of two groups of dynamic spring performances.
A kind of magnetic latching relay that can resist short circuit current of the present invention, uses dynamic spring lead-out tablet 13,23 in thickness
Degree direction set there are one be used for the matched convex bud 131,231 of pedestal, one end end of dynamic spring lead-out tablet 13,23 along to
It is outer to extend certain position tongue piece 132,232, and position tongue piece 132,232 relative to dynamic spring lead-out tablet 13,23 tilt an angle with
Realization avoids the bending part of movable contact spring.This structure of the present invention is avoided by the Reasonable Orientation to moving spring lead-out tablet
The product use during, because moving spring lead-out tablet under temperature, the effect of the extraneous stress of vibratory impulse without reliable positioning
Because of the drawbacks of loosening, falling off, product function is caused to fail.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.Although of the invention
Disclosed above with preferred embodiment, however, it is not intended to limit the invention.Any technical person familiar with the field is not taking off
In the case of from technical solution of the present invention range, all technical solution of the present invention is made perhaps using the technology contents of the disclosure above
Mostly possible changes and modifications, or it is revised as equivalents equivalent embodiment.Therefore, every without departing from technical solution of the present invention
Content, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment, should all fall according to the present invention
In the range of technical solution of the present invention protection.
Claims (20)
1. a kind of magnetic latching relay that can resist short circuit current, including contact portion；The contact portion by two groups substantially
The dynamic spring part being mutually parallel is constituted；Described two groups dynamic spring parts respectively include movable contact spring, movable contact, dynamic spring lead-out tablet and stationary contact
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 are connected to the at one 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 in 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, so that described
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, to
While reducing the distance between two movable contact springs and increase the effective length of each movable contact spring.
2. the magnetic latching relay according to claim 1 that short circuit current can be resisted, 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 in 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, so that the protrusion of the second bending part of another movable contact spring can 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. the magnetic latching relay according to claim 2 that short circuit current can be resisted, it is characterised in that：First folding
Turn of bilge, the second bending part are arcuate shape.
4. the magnetic latching relay according to claim 2 that short circuit current can be resisted, 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-shaped or c-type, and the U-shaped of bending part, N-shaped or c-type
The center line of opening is with the straight reed of movable contact spring in substantially vertical.
5. the magnetic latching relay according to claim 2 that short circuit current can be resisted, 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. the magnetic latching relay according to claim 5 that short circuit current can be resisted, 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. the magnetic latching relay according to claim 1 that short circuit current can be resisted, it is characterised in that：It is moved 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. the magnetic latching relay according to claim 2 that short circuit current can be resisted, 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. the magnetic latching relay according to claim 2 that short circuit current can be resisted, it is characterised in that：Same dynamic
In reed, the first bending part and the second dogleg section other places are at the both ends of the movable contact spring.
10. the magnetic latching relay according to claim 1 or 2 that short circuit current can be resisted, it is characterised in that：It is described dynamic
Reed is two individual parts with dynamic spring lead-out tablet.
11. the magnetic latching relay according to claim 1 or 2 that short circuit current can be resisted, it is characterised in that：It is described dynamic
Reed is an integral structure with dynamic spring lead-out tablet.
12. the magnetic latching relay according to claim 1 or 2 that short circuit current can be resisted, it is characterised in that：It is described dynamic
Reed is made of monolithic reed.
13. the magnetic latching relay according to claim 1 or 2 that short circuit current can be resisted, it is characterised in that：It is described dynamic
Reed is overlapped by two with upper reed plate and is constituted in a thickness direction.
14. the magnetic latching relay that can resist short circuit current according to Claims 2 or 3 or 8, it is characterised in that：Tool
There are the length and shape of the movable contact spring of two groups of dynamic spring parts of first bending part and the second bending part identical.
15. the magnetic latching relay according to claim 2 that short circuit current can be resisted, it is characterised in that：Further,
Further 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, another dynamic spring lead-out tablet is electric current exit；Described two
Each one end of a dynamic spring lead-out tablet fits in pedestal respectively, and each other end of described two dynamic spring lead-out tablets is each extended in base
Seat is outer.
16. the magnetic latching relay according to claim 15 that short circuit current can be resisted, it is characterised in that：It is described two
Dynamic spring lead-out tablet thickness direction be respectively equipped with one be used for the matched convex bud of pedestal, the pedestal be equipped be used for
The matched slot of convex bud of corresponding dynamic spring lead-out tablet.
17. the magnetic latching relay according to claim 16 that short circuit current can be resisted, it is characterised in that：It is described two
Along the positioning tongue piece that extends outwardly respectively, the positioning tongue piece is tilted relative to dynamic spring lead-out tablet at each one end end of dynamic spring lead-out tablet
One angle is to realize that the bending part to movable contact spring avoids.
18. the magnetic latching relay according to claim 17 that short circuit current can be resisted, it is characterised in that：The positioning
The thickness of tongue piece is less than the thickness of dynamic spring lead-out tablet.
19. the magnetic latching relay according to claim 15 that short circuit current can be resisted, 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 the margin of tolerance is -0.1~+0.5mm；Described two
In a 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 the margin of tolerance is -0.5~+0.5mm.
20. the magnetic latching relay according to claim 2 that short circuit current can be resisted, it is characterised in that：Further, also
Including rotary magnetic circuit part and pushing block, rotary magnetic circuit part passes through the pushing block end with described two movable contact springs respectively
It matches, when rotary magnetic circuit part is rotated towards one side, two movable contacts can be made to be in contact respectively with two stationary contacts, and
When rotary magnetic circuit part is rotated towards another side, two movable contacts is 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 |
| BR112019020619A BR112019020619A2 (en) | 2017-04-01 | 2018-03-30 | magnetic latching relay capable of withstanding short circuit current |
| PL18777975T PL3608938T3 (en) | 2017-04-01 | 2018-03-30 | Magnetic latching relay capable of resisting 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 |
| 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 CN106971913A (en) | 2017-07-21 |
| CN106971913B true 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 (6)
| Country | Link |
|---|---|
| EP (1) | EP3608938B1 (en) |
| CN (1) | CN106971913B (en) |
| BR (1) | BR112019020619A2 (en) |
| ES (1) | ES2909873T3 (en) |
| PL (1) | PL3608938T3 (en) |
| WO (1) | WO2018177428A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715261C1 (en) * | 1997-04-12 | 1998-12-10 | Gruner Ag | Relay |
| WO2005106907A1 (en) * | 2004-04-30 | 2005-11-10 | Blp Components Limited | Electrical contactor |
| JP4116022B2 (en) * | 2005-07-11 | 2008-07-09 | ウチヤ・サーモスタット株式会社 | Electromagnetic relay |
| 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 |
| US8514040B2 (en) * | 2011-02-11 | 2013-08-20 | Clodi, L.L.C. | Bi-stable electromagnetic relay with x-drive motor |
| 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 |
| GB201407705D0 (en) * | 2014-05-01 | 2014-06-18 | Johnson Electric Sa | Improvements in electrical contact sets |
| 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 |
| 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 |
| 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 |
| 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 |
-
2017
- 2017-04-01 CN CN201710213323.2A patent/CN106971913B/en active Active
-
2018
- 2018-03-30 PL PL18777975T patent/PL3608938T3/en unknown
- 2018-03-30 ES ES18777975T patent/ES2909873T3/en active Active
- 2018-03-30 EP EP18777975.6A patent/EP3608938B1/en active Active
- 2018-03-30 BR BR112019020619A patent/BR112019020619A2/en active IP Right Grant
- 2018-03-30 WO PCT/CN2018/081417 patent/WO2018177428A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP3608938B1 (en) | 2022-03-02 |
| WO2018177428A1 (en) | 2018-10-04 |
| BR112019020619A2 (en) | 2020-04-22 |
| PL3608938T3 (en) | 2022-05-30 |
| EP3608938A1 (en) | 2020-02-12 |
| ES2909873T3 (en) | 2022-05-10 |
| CN106971913A (en) | 2017-07-21 |
| EP3608938A4 (en) | 2020-12-23 |
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