CN109830404A - A kind of DC relay with arc extinguishing and resistance to shorting function of current - Google Patents
A kind of DC relay with arc extinguishing and resistance to shorting function of current Download PDFInfo
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- CN109830404A CN109830404A CN201811624114.8A CN201811624114A CN109830404A CN 109830404 A CN109830404 A CN 109830404A CN 201811624114 A CN201811624114 A CN 201811624114A CN 109830404 A CN109830404 A CN 109830404A
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
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- 235000014676 Phragmites communis Nutrition 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims 1
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 15
- 230000004907 flux Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The invention discloses a kind of DC relay with arc extinguishing and resistance to shorting function of current, movable contact spring, a rod member and four blocks of magnet steel including two stationary contact exits, straight piece type；Four blocks of magnet steel be arranged respectively at the both sides of the width of movable contact spring corresponding to sound contact position and magnetic pole in X-type be distributed to realize magnetic quenching, the top of movable contact spring be equipped with upper magnetizer, below movable contact spring be equipped with lower magnetizer；It is equipped at least one through-hole in movable contact spring, so that upper magnetizer can be close to each other by the through-hole with lower magnetizer or contacts with each other, and forms at least two independent magnetic conductive loops on the width of movable contact spring by the upper magnetizer and lower magnetizer.The present invention can use each magnetic conductive loop in the increased magnetic pole pole-face of corresponding lead to the hole site, in movable contact spring failure high current, the suction on contact force direction is generated, goes to resist the electrodynamic repulsion force generated between movable contact spring and stationary contact exit by fault current.
Description
Technical field
The present invention relates to relay technical fields, more particularly to a kind of direct current with arc extinguishing and resistance to shorting function of current
Relay.
Background technique
A kind of DC relay of the prior art is to use direct-acting magnet line structure, two stationary contact exit (i.e. two
Load exit) it is separately mounted on shell, the bottom end of two stationary contact exits is equipped with stationary contact, one of stationary contact
The electric current of exit flows into, and the electric current outflow of another stationary contact exit is provided with dynamic spring and rod member in shell,
Dynamic spring uses straight chip type movable contact spring (also referred to as bridge-type movable contact spring), and movable contact spring is mounted in rod member by spring, pushes
Rod unit is connected with Direct Action Type magnetic circuit, and under the action of Direct Action Type magnetic circuit, rod member drives movable contact spring to move up,
The movable contact at movable contact spring both ends is set to be in contact respectively with the stationary contact of two stationary contact exit bottom ends, to realize that connection is negative
It carries.The DC relay of the prior art is usually that magnet steel is configured near contact, is realized using magnetic field caused by magnet steel
Arc extinguishing, this DC relay can generate electrodynamic repulsion force between dynamic and static contact when failure short circuit current, thus
Influence the stability contacted between dynamic and static contact.With the rapid development of new energy industry, to the resistance to shorting of DC relay
Functional requirement is also higher and higher, and the DC relay of the prior art can not be provided in the case where keeping feature small in size it is enough
Suction, i.e. contact force are insufficiently resistant to the electrodynamic repulsion force that dynamic spring is subject to, therefore are difficult to meet market demands.
Summary of the invention
It is an object of the invention to overcome the deficiency of the prior art, provides a kind of with arc extinguishing and resistance to shorting function of current
DC relay can provide enough contacts under the feature for keeping small product size small and press on the basis of realizing arc extinguishing
Power to resist electrodynamic repulsion force caused by the big short circuit current that dynamic spring is subject to, and has that magnetic efficiency is high, what magnetic circuit was not easy to be saturated
Feature.
The technical solution adopted by the present invention to solve the technical problems is: a kind of with arc extinguishing and resistance to shorting function of current
DC relay, movable contact spring, a rod member and four blocks of magnet steel including two stationary contact exits, straight piece type；
The movable contact spring is loaded on rod member, quiet with the movable contact at realization movable contact spring both ends in the case where rod member acts on and two
The stationary contact of contact exit bottom end matches；Four blocks of magnet steel are arranged respectively at the correspondence on the both sides of the width of movable contact spring
In the position of sound contact, and correspond to the magnetic pole of the one side towards sound contact of two blocks of magnet steel of same a pair of of sound contact
It is set as on the contrary, and the one side towards corresponding sound contact of two blocks of magnet steel on same one side of the width corresponding to movable contact spring
Magnetic pole be also set as on the contrary, being also connected with yoke folder corresponding between two blocks of magnet steel with a pair of of sound contact；In movable contact spring
Two movable contacts between position top be equipped with along movable contact spring width distribution upper magnetizer, under the position
Face is equipped with the width distribution along movable contact spring and can be servo-actuated the lower magnetizer that reed moves together；Movable contact spring in the position
In be equipped at least one through-hole so that upper magnetizer can be close to each other by the through-hole with lower magnetizer or contacts with each other,
And at least two independent magnetic conductive loops are formed on the width of movable contact spring by the upper magnetizer and lower magnetizer, to utilize
Each magnetic conductive loop is in the corresponding increased magnetic pole pole-face of lead to the hole site, in movable contact spring failure high current, generates touching
Suction on point pressure direction goes to resist the electrodynamic repulsion force generated between movable contact spring and stationary contact exit by fault current.
It is described to correspond to two blocks of magnet steel with a pair of of sound contact, it is to be located at relative to described with the inclined of a pair of of sound contact
Seated position, and two blocks of magnet steel are to be dislocatedly distributed.
The upper magnetizer is magnetizer at least one "-" type, and the lower magnetizer is at least two U-shaped lower magnetic conductions
Body；Wherein, a U-shaped lower magnetizer forms an independent magnetic conductive loop with magnetizer in corresponding "-" type, and adjacent
It is not in contact between the U-shaped lower magnetizer of two of two magnetic conductive loops.
In at least two independent magnetic conductive loops, magnetic conduction in the "-" type of two adjacent magnetic conductive loops of at least one group
Body is one shared, and the U-shaped lower magnetizer of two of two adjacent magnetic conductive loops is respectively fitting into magnetic conduction in a "-" type
The lower section of body.
In at least two independent magnetic conductive loops, magnetizer is in the "-" type of all two adjacent magnetic conductive loops
Independent two, the U-shaped lower magnetizer of two of two adjacent magnetic conductive loops is respectively fitting into magnetizer in corresponding "-" type
Lower section.
The magnetic conductive loop is two, and the movable contact spring is equipped with a through-hole, each one side wall point of two U-shaped lower magnetizers
It is not affixed on the respective side of the width of movable contact spring, each another side wall of two U-shaped lower magnetizers is each passed through the same of movable contact spring
A through-hole, and there is gap between each another side wall of two U-shaped lower magnetizers.
Each another side wall of described two U-shaped lower magnetizers is in the same through-hole of movable contact spring along the length of movable contact spring
Direction is distributed or is dislocatedly distributed side by side, makes two magnetic conductive loops corresponding to two U-shaped lower magnetizers along the length of movable contact spring
Direction is distributed or is dislocatedly distributed side by side.
The magnetic conductive loop is two, and the movable contact spring is set there are two through-hole, and two through-holes are in the length side of movable contact spring
It is distributed or is dislocatedly distributed side by side upwards, each one side wall of described two U-shaped lower magnetizers is affixed on pair of the width of movable contact spring respectively
Answer side, each another side wall of described two U-shaped lower magnetizers is respectively fitting into two through-holes of movable contact spring, make two it is U-shaped
Two magnetic conductive loops corresponding to lower magnetizer are distributed or are dislocatedly distributed side by side along the length direction of movable contact spring.
The magnetic conductive loop is three, and the movable contact spring is set there are two through-hole, and three U-shaped lower magnetizers are along movable contact spring
Width sequence arranges, wherein the two sidewalls of the U-shaped lower magnetizer of intermediate one are each passed through two through-holes of movable contact spring, both sides
Two U-shaped lower magnetizers each one side wall be affixed on respectively movable contact spring width respective side, led under two of both sides are U-shaped
Each another side wall of magnet is each passed through two through-holes of movable contact spring, and between the two side walls in the same through-hole in movable contact spring
With gap.
The upper magnetizer is upper armature, and upper armature is fixed on the rod member, and the lower magnetizer is lower armature,
Lower armature is fixed on the movable contact spring, and the movable contact spring is mounted in the rod member by spring, when moving for movable contact spring
When contact is in contact with the stationary contact of stationary contact exit, there are a preset gaps between upper armature and lower armature.
The upper magnetizer be upper yoke, upper yoke ferropexy in be used to two stationary contact exits are installed shell on, institute
Stating lower magnetizer is lower armature, and lower armature is fixed on the movable contact spring, and the movable contact spring is mounted on the catch bar by spring
In component, when the movable contact of movable contact spring is in contact with the stationary contact of stationary contact exit, upper yoke is in contact with lower armature.
The rod member includes u-bracket, spring base and catch bar, the top of the catch bar and the spring base
Mutually fixed, the bottom of the u-bracket is mutually fixed with the spring base, and the movable contact spring and two U-shaped lower magnetizers are formed
Movable spring assembly be mounted in the u-bracket by the spring, wherein the upper surface of movable contact spring is against the top of u-bracket
Inner wall, spring are against between the bottom end of described two U-shaped lower magnetizers and the top of the spring base.
Compared with prior art, the beneficial effects of the present invention are:
1, the present invention corresponds to sound due to the both sides using the width that four blocks of magnet steel are arranged respectively to movable contact spring
The position of contact, and the magnetic pole for corresponding to the one side towards sound contact of two blocks of magnet steel of same a pair of of sound contact is set as phase
Instead, correspond to the magnetic pole of the one side towards corresponding sound contact of two blocks of magnet steel on same one side of the width of movable contact spring
Also it is set as on the contrary, being also connected with yoke folder corresponding between two blocks of magnet steel with a pair of of sound contact；And in movable contact spring
The top of position between two movable contacts is equipped with upper magnetizer, below the position between two movable contacts of movable contact spring
Equipped with the lower magnetizer that can be servo-actuated reed and move together；At least one through-hole is equipped in the movable contact spring of the position, so that
Upper magnetizer can be close to each other by the through-hole with lower magnetizer or contacts with each other, and is led under by the upper magnetizer
Magnet forms at least two independent magnetic conductive loops on the width of movable contact spring.This structure of the invention is utilizing four blocks of magnetic
On the basis of steel realizes arc extinguishing, recycle each magnetic conductive loop in the corresponding increased magnetic pole pole-face of lead to the hole site, in dynamic spring
When piece failure high current, increase the suction on contact force direction, is superimposed with contact force and resists movable contact
Because of the electrodynamic repulsion force of fault current generation between stationary contact；Multiple independent magnetic conductive loops divide equally Short-Circuit High Current substantially,
With magnetic efficiency height, magnetic circuit is not easy the characteristics of being saturated.
2, the present invention is due to using each independent magnetic conductive loop by magnetizer in "-" type and U-shaped lower magnetizer phase
Cooperation is formed, and can use identical part, at low cost；And there are gaps between each U-shaped lower magnetizer；It is led in "-" type
Magnet can be fixed on rod member, can also be fixed on the shell for installing two stationary contact exits, each U
Magnetizer is to be individually fixed in the movable contact spring with riveting method, and the top of the side wall of U-shaped lower magnetizer is exposed to institute under type
State the upper surface of movable contact spring.This structure of the invention is to utilize upper magnetizer and lower the magnetizer shape at the section of movable contact spring
Magnetic flux is generated on multiple magnetic conductive loops, each when movable contact spring passes through fault current at multiple independent magnetic conductive loops
Suction is generated between the magnetizer of magnetic conductive loop, which is the increased direction of contact force, for resisting the electronic reprimand between contact
Power, due to having used multiple magnetic conductive loops, each circuit is only Imax/n by the fault current contained, so that magnetic circuit is not easy
Saturation, bigger by electric current, contact force increase is bigger, and the suction that magnetic conductive loop generates is also bigger.
Invention is further described in detail with reference to the accompanying drawings and embodiments；But one kind of the invention have arc extinguishing and
The DC relay of resistance to shorting function of current is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is the schematic diagram of the local structure of the embodiment of the present invention one；
Fig. 2 is the magnet steel distribution schematic diagram of the embodiment of the present invention one；
Fig. 3 is the schematic diagram of the magnet steel arc extinguishing structure (yoke folder is not shown) of the embodiment of the present invention one；
Fig. 4 is that the magnet steel arc extinguishing structure of the embodiment of the present invention one rotates the signal of an angle (yoke folder is not shown)
Figure；
Fig. 5 is the cross-sectional view of the part-structure (cut open and show corresponding to the length along movable contact spring) of the embodiment of the present invention one；
Fig. 6 is the cross-sectional view of the part-structure (cut open and show corresponding to the width along movable contact spring) of the embodiment of the present invention one；
Fig. 7 is the schematic diagram that the movable contact spring, upper and lower magnetizer and rod member of the embodiment of the present invention one match；
Fig. 8 is that the component that the movable contact spring, upper and lower magnetizer and rod member of the embodiment of the present invention one match decomposes
Schematic diagram；
Fig. 9 is the movable contact spring of the embodiment of the present invention one and the schematic diagram of upper and lower magnetic conduction mates；
Figure 10 is the movable contact spring of the embodiment of the present invention one and the schematic diagram of upper and lower magnetic conduction mates (overturning one side)；
Figure 11 is the u-bracket of the rod member of the embodiment of the present invention one and the schematic diagram of upper magnetic conduction mates；
Figure 12 is the movable contact spring of the embodiment of the present invention one and the schematic diagram of lower magnetic conduction mates；
Figure 13 is the schematic diagram of double magnetic conductive loops of the embodiment of the present invention one；
Figure 14 is the stationary contact exit of the embodiment of the present invention one and movable contact spring matches the schematic diagram of (contact disconnection)；
Figure 15 is the stationary contact exit of the embodiment of the present invention one and movable contact spring matches the schematic diagram of (contact contact)；
Figure 16 is the stationary contact exit of the embodiment of the present invention two and movable contact spring matches the schematic diagram of (contact disconnection)；
Figure 17 is the stationary contact exit of the embodiment of the present invention two and movable contact spring matches the schematic diagram of (contact contact)；
Figure 18 is the upper and lower magnetizer of the embodiment of the present invention three and the D structure schematic diagram that movable contact spring matches；
Figure 19 is the upper and lower magnetizer of the embodiment of the present invention three and the cross-sectional view that movable contact spring matches；
Figure 20 is the organigram of the movable contact spring of the embodiment of the present invention three.
Specific embodiment
Embodiment one
Referring to shown in Fig. 1 to Figure 15, a kind of DC relay with arc extinguishing and resistance to shorting function of current of the invention is wrapped
Include two respectively as electric current flow into and electric current outflow two stationary contact exits 11,12, one straight piece types movable contact spring 2,
One is connect for driving movable contact spring 2 to move with the stationary contact of the movable contact and stationary contact exit bottom end of realizing movable contact spring both ends
Touching or the rod member 3 disconnected and four blocks of magnet steel 71；Two stationary contact exits 11,12 are attached separately on shell 4, move spring
A part of piece 2 and rod member 3 is contained in shell 4, and rod member 3 is also connected with the dynamic iron core 5 in magnetic structure
Connect, under the action of magnetic circuit, rod member 3 drives movable contact spring 2 to move up, make the movable contact at 2 both ends of movable contact spring respectively with
Two stationary contact exits 11,12 bottom ends stationary contact be in contact, thus realize connection load；The movable contact spring 2 passes through spring
31 are mounted in the rod member 3 to realize that movable contact spring 2 can be displaced relative to the rod member 3 and (realize contact
Overtravel)；Four blocks of magnet steel 71 are in outside shell 4, and four blocks of magnet steel 71 are arranged respectively at pair on the both sides of the width of movable contact spring 2
Should be in the position of sound contact, and correspond to the one side towards sound contact of two blocks of magnet steel 71 with a pair of of sound contact
Magnetic pole be set as on the contrary, and correspond to same one side of the width of movable contact spring 2 two blocks of magnet steel 71 towards corresponding sound contact
The magnetic pole of one side be also set as on the contrary, being also connected with yoke folder corresponding between two blocks of magnet steel 71 with a pair of of sound contact
72；In the present embodiment, stationary contact exit 11 is electric current inflow, and stationary contact exit 12 is electric current outflow, then in movable contact spring 2,
Electric current is by flowing to the other end close to stationary contact exit 12 close to this one end of stationary contact exit 11；As shown in Fig. 2,
In four blocks of magnet steel 71, in two blocks of magnet steel 71 on the left side of the direction of current flow of movable contact spring, close to stationary contact exit 11 this
The magnetic pole of the one side towards corresponding sound contact of the magnet steel 71 of side is set as the pole N, close to stationary contact exit 12 this
The magnetic pole of the one side towards corresponding sound contact of the magnet steel 71 of side is set as the pole S, in the direction of current flow of movable contact spring
In two blocks of magnet steel 71 on the right, close to 11 this side of stationary contact exit magnet steel 71 towards corresponding sound contact
Magnetic pole on one side is set as the pole S, close to 12 this side of stationary contact exit magnet steel 71 towards the one of corresponding sound contact
The magnetic pole in face is set as the pole N；It corresponding to two blocks of magnet steel 71 of same a pair of of sound contact, is located at relative to described with a pair of of sound
The offset position of contact, and two blocks of magnet steel 71 are to be dislocatedly distributed；Yoke folder 72 is substantially at U-shaped, the U-shaped bottom wall of yoke folder 72
Outside the end of the corresponding end at the both ends of the corresponding length in movable contact spring 2, the U-shaped two sidewalls of yoke folder 72 are connected to correspondence
In the back side corresponding to sound contact of two blocks of magnet steel 71 of same a pair of of sound contact；Between two movable contacts of movable contact spring 2
The top of position (the generally middle position of movable contact spring) upper magnetizer 61 is housed, in the present embodiment, upper magnetizer 61 is upper
Armature, equipped with the lower magnetizer that reed moves together can be servo-actuated below the position between two movable contacts of movable contact spring 2
62, in the present embodiment, lower magnetizer 62 is lower armature；In the present embodiment, the upper magnetizer 61 is fixed on the promotion bar portion
Part 3, the lower magnetizer 62 are fixed on the movable contact spring 2；It is equipped at least in the movable contact spring of position between two movable contacts
One through-hole 22, so that upper magnetizer 61 can be close to each other by the through-hole 22 with lower magnetizer 62 or contacts with each other, and
At least two independent magnetic conductive loops are formed on the width of movable contact spring 2 by the upper magnetizer 61 and lower magnetizer 62, with benefit
With each magnetic conductive loop in the corresponding increased magnetic pole pole-face of lead to the hole site, in 2 failure high current of movable contact spring, produce
On raw contact force direction suction (it is be since upper magnetizer 61 is opposite fixed, and lower magnetizer 62 be it is relatively movable,
Therefore, upward suction is formed), it goes to resist the electrodynamic repulsion force generated between movable contact spring and stationary contact exit by fault current.
Wherein, upper magnetizer, lower magnetizer can use iron, cobalt, and the materials such as nickel and its alloy are made.
In the present embodiment, four blocks of magnet steel 71 and two yokes folder 72, which match, to be formed by magnetic field and can be formed as in Fig. 2
The magnetic blow-out power in direction shown in arrow, the magnetic blow-out power of both direction carries out arc extinguishing processing to two pairs of sound contacts respectively, due to magnetic blow-out
The direction of power is that will not generate interference between each other towards equidirectional oblique upper.Four magnet steel 71 and two yoke folders 72
It matches and is formed by magnetic field and also acts against on movable contact spring 2, form upward active force in one end of movable contact spring 2, and in dynamic spring
The other end of piece 2 then forms downward power, in this manner it is possible to form the effect of rubbing between movable contact and stationary contact, reaches
Prevent the effect of contact adhesion.
This DC relay of the invention, loads nonpolarity requirement, and forward and reverse arc extinguishing ability is suitable.
In the present invention, so-called two independent magnetic conductive loops refer to will not interfere with each other between two magnetic conductive loops, also
It is that the case where cancelling out each other is not present in magnetic flux.
It is as shown in figs. 13 and 14, described since upper magnetizer 61 is fixed on the rod member 3 in the present embodiment
Lower magnetizer 62 is fixed on the movable contact spring 2, and the movable contact spring 2 is mounted in the rod member 3 by spring 31, when
When the movable contact of movable contact spring 2 is in contact with the stationary contact of stationary contact exit 11,12, upper magnetizer 61 and lower magnetizer 62 it
Between there are a preset gaps, in this way, there are magnetic gap for magnetic conductive loop.
The upper magnetizer is magnetizer at least one "-" type, and the lower magnetizer is at least two U-shaped lower magnetic conductions
Body；Wherein, a U-shaped lower magnetizer forms an independent magnetic conductive loop with magnetizer in corresponding "-" type, and adjacent
It is not in contact between the U-shaped lower magnetizer of two of two magnetic conductive loops.
In the present embodiment, magnetic conductive loop is two, and two magnetic conductive loops are by magnetizer 61 in a "-" type and a U
Magnetizer 62 matches to be formed under type；Magnetizer 61 is fixed in a manner of rivet or weld described respectively in two "-" types
Rod member 3, two U-shaped lower magnetizers 62 are individually fixed in the movable contact spring 2, and two U-shaped lower magnetic conductions with riveting method
The top of the side wall of body 62 is exposed to the upper surface of the movable contact spring.
In the present embodiment, the through-hole 22 of the movable contact spring 2 is set as that the side wall of two U-shaped lower magnetizers is allowed to be pierced by.
In the present embodiment, magnetic conductive loop is two, i.e. magnetic conductive loop Φ 1 and magnetic conductive loop Φ (as shown in figure 12), two
Magnetizer 61 is fixed on the rod member 3 in "-" type, has certain interval in two "-" types between magnetizer 61,
Each one side wall 621 of two U-shaped lower magnetizers 62 is affixed on the respective side of the width of movable contact spring 2, two U-shaped lower magnetic conductions respectively
Each another side wall 622 of body 62 is each passed through the same through-hole 22 of movable contact spring, and each other side of two U-shaped lower magnetizers
There is gap, so that the magnetic flux of two magnetic conductive loops will not cancel out each other between wall 622.
In the present embodiment, the top and the upper surface of the movable contact spring of the side wall of the U-shaped lower magnetizer are substantially concordant, i.e.,
The top of the side wall 621 of magnetizer 62 and side wall 622 and the upper surface of the movable contact spring 2 are substantially concordant under U type.
In the present embodiment, in the movable contact spring 2, those widened sections are further respectively had on the both sides for the width for corresponding to lead to the hole site
23。
Since there are two above magnetic conductive loops by the present invention, there are four side wall (i.e. two sides altogether for two U-shaped lower magnetizers 62
Wall 621, two side walls 622) top and upper magnetizer 61 cooperate, i.e., there are four magnetic pole strength, phases for two U-shaped lower magnetizers 62
For only one magnetic conductive loop (only there are two magnetic pole strengths), in the feelings that the structure feature of lower magnetizer 62 remains unchanged
Under condition, equivalent to increase two magnetic pole strengths (it is increased for being equivalent to two magnetic pole strengths of lead to the hole site), to improve magnetic
Efficiency increases suction.When 2 failure high current of movable contact spring, two independent magnetic conductive loop, that is, magnetic conductive loop Φ 1 and lead
Magnetic loop Φ generates suction F, goes to resist the electrodynamic repulsion force that fault current generates between movable contact spring and the extraction of quiet spring, thus significantly
Improve resistance to shorting electric current (fault current) ability of the invention.
It is limited by structural condition, the magnetic conduction section of magnetic loop is inadequate, and under fault current, a magnetic loop is easily full
With so that suction is not rising.And two magnetic loops of the embodiment of the present invention are equivalent to direction of current flow being divided into two sections
Face area, each cross-sectional area correspond to a shunt current, and shunt current is less than the half of essentially fault current, and magnetic loop is not
It will appear magnetic saturation, magnetic flux will increase, and generated suction also will increase, and return this, two magnetic loops of the present patent application are opposite
In the prior art a magnetic loop resistance to shorting electric current equivalent to increase one times, according to the magnitude of system failure electric current and
Magnetic conduction sectional area, magnetic loop can be N number of with array.
The rod member 3 include u-bracket 32, spring base 33 and catch bar 34, the top of the catch bar 34 with
33 phase of spring base is fixed, and the bottom of catch bar 34 then connects dynamic iron core 5, the bottom of the u-bracket 32 and the spring
33 phases of seat are fixed, and u-bracket 32 and spring base 33 surround a frame shape, the movable contact spring 2 and two U-shaped lower 62 institutes of magnetizer
The movable spring assembly 20 of composition is mounted in the frame shape that the u-bracket is surrounded with spring base 33 by the spring 31, wherein
For the upper surface of movable contact spring 2 against the top inner wall of u-bracket 32, spring 31 is elastically against the bottom of magnetizer 62 under described two U types
Between end and the top of the spring base 33.
In the present embodiment, the bottom end of described two U-shaped lower magnetizers 62 is further respectively had for positioning determining for the spring
Position column 623, to be positioned in the outside at the top of spring 31 to spring 31 using positioning column 623.It is equipped on spring base 33
For the circular orientation groove 331 of the bottom of retaining spring.
Certainly, the location structure of spring top is also possible to further respectively have in the bottom end of described two U-shaped lower magnetizers
For positioning the half slot of the spring, and two half slots is made to surround a full circle to fit in the top of the spring.
In the present embodiment, two U-shaped lower magnetizers on the length direction of movable contact spring in being arranged side by side, it is of course also possible to
Two U-shaped lower magnetizers are arranged to be dislocation arrangement on the length direction of movable contact spring.
When rod member 3 does not move up, by the effect of spring 31, the upper surface of movable contact spring 2 is against in "-" type and leads
The bottom surface of magnet 61, when rod member 3 is moved to suitable position, the movable contact at 2 both ends of movable contact spring and two stationary contacts
Exit 11,12 is in contact respectively, and then, rod member 3 continues to move up, and magnetizer 61 is also with promotion in "-" type
Rod unit 3 continues to move up, and movable contact spring 2 is moved due to being in contact with the bottom end of two stationary contact exits 11,12
Reed 2 can not continue to move up, and realize the overtravel of contact, and spring 31 provides contact force, magnetizer 61 in "-" type
Certain gap is formed between the upper surface of bottom end and movable contact spring 2, also consequently leads to the bottom surface of magnetizer 61 and U in "-" type
There are magnetic gap between the top surface of magnetizer 62 under type.
A kind of DC relay with arc extinguishing and resistance to shorting function of current of the invention, divides using by four blocks of magnet steel 71
It is positioned respectively at the position corresponding to sound contact on the both sides of the width 2 of movable contact spring, and corresponds to two with a pair of of sound contact
The magnetic pole of the one side towards sound contact of block magnet steel is set as on the contrary, and two pieces of same one side of the width corresponding to movable contact spring
The magnetic pole of the one side towards corresponding sound contact of magnet steel is also set as on the contrary, corresponding to two with a pair of of sound contact
Yoke folder 72 is also connected between block magnet steel；And the top of the position between two movable contacts of movable contact spring 2 is equipped with and above leads
Magnet 61, equipped with the lower magnetic conduction that reed moves together can be servo-actuated below the position between two movable contacts of movable contact spring 2
Body 62；And the upper magnetizer 61 is fixed on the rod member 3, the lower magnetizer 62 is fixed on the movable contact spring 2；
At least one through-hole 22 is equipped in the movable contact spring 2 of position between two movable contacts, so that upper magnetizer 61 and lower magnetizer
62 can be close to each other by the through-hole 22 or contact with each other, and by the upper magnetizer 61 and lower magnetizer 62 in dynamic spring
At least two independent magnetic conductive loops are formed on the width of piece 2.This structure of the invention is realized using four blocks of magnet steel 71
On the basis of arc extinguishing, recycles each magnetic conductive loop in the corresponding increased magnetic pole pole-face of lead to the hole site, go out in movable contact spring 2
When existing failure high current, increase the suction on contact force direction, be superimposed with contact force resist movable contact with it is quiet
Because of the electrodynamic repulsion force of fault current generation between contact；Multiple independent magnetic conductive loops divide equally Short-Circuit High Current substantially, have
Magnetic efficiency is high, and magnetic circuit is not easy the characteristics of being saturated.
A kind of DC relay with arc extinguishing and resistance to shorting function of current of the invention uses each independent magnetic conduction
Circuit is formed by magnetizer in "-" type and U-shaped lower magnetic conduction mates, can use identical part, at low cost；And it is each
There are gaps between magnetizer under a U type；Magnetizer is fixed on rod member in "-" type；Specifically, the present embodiment
Magnetic conductive loop is two, that is, there are two magnetizer 61 and two U-shaped lower magnetizers 62 in "-" type, magnetic conduction in two "-" types
There is gap between body 61, also have gap between two U-shaped lower magnetizers 62, since two U-shaped lower magnetizers 62 respectively have side wall
622 are through in the through-hole 22 of movable contact spring, therefore, in the through-hole 22 of movable contact spring, between the side wall 622 of two U-shaped lower magnetizers
Need gap；Magnetizer 61 is fixed on the rod member in a manner of rivet or weld respectively in each "-" type
3, each U-shaped lower magnetizer 62 is individually fixed in the movable contact spring 2, and the side wall of U-shaped lower magnetizer 2 with riveting method
Top be exposed to the upper surface of the movable contact spring 2, form the magnetic pole strength of increase, increase suction.This structure of the invention is
Movable contact spring 2 is divided into multiple cross-sectional areas, when movable contact spring 2 is by fault current, generates magnetic flux on multiple magnetic conductive loops,
Suction is generated between the magnetizer of each magnetic conductive loop, which is the increased direction of contact force, for resisting the electricity between contact
Dynamic repulsion, due to having used multiple magnetic conductive loops, each circuit is only Imax/n by the fault current contained, so that magnetic circuit
It is not easy to be saturated, bigger by electric current, contact force increase is bigger, and the suction that magnetic conductive loop generates is also bigger.
Embodiment two
Referring to shown in Figure 16 to Figure 17, a kind of DC relay with arc extinguishing and resistance to shorting function of current of the invention,
The difference is that, the upper magnetizer 61 is upper yoke, and upper yoke is affixed to quiet for installing two with embodiment one
On the shell of contact exit, in this way, when movable contact spring 2 movable contact and stationary contact exit 11,12 stationary contact not in contact with matching
It is preset there are one between upper magnetizer 61 (upper yoke) and lower magnetizer 62 (lower armature) when closing (when i.e. contact mutually disconnects)
Gap, and when the movable contact of movable contact spring 2 is in contact with the stationary contact of stationary contact exit 11,12 and cooperates, upper magnetizer 61
It is in contact with lower magnetizer 62, i.e., it is substantially very close to each other between upper magnetizer 61 and lower magnetizer 62.
Embodiment three
Referring to shown in Figure 18 to Figure 20, a kind of DC relay with arc extinguishing and resistance to shorting function of current of the invention,
The difference is that, magnetic conductive loop is three, and the movable contact spring 2 is set there are two through-hole 22, under three U-shaped with embodiment one
Magnetizer 62 is arranged along the width sequence of movable contact spring 2, wherein the two sidewalls 621 of the U-shaped lower magnetizer 62 of intermediate one,
622 are each passed through two through-holes 22 of movable contact spring, and each one side wall 621 of the U-shaped lower magnetizer 62 of two of both sides is affixed on dynamic respectively
Each another side wall 622 of the respective side of the width of reed, the U-shaped lower magnetizer 62 of two of both sides is each passed through movable contact spring
Two through-holes 22, and between having between the side wall 622 of two U-shaped lower magnetizers 62 in the same through-hole 22 in movable contact spring 2
Gap.
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
It has been disclosed in a preferred embodiment above, however, it is not intended to limit the invention.Anyone skilled in the art, not
In the case where being detached from technical solution of the present invention range, all technical solution of the present invention is made using the technology contents of the disclosure above
Many possible changes and modifications out, or it is revised as equivalents equivalent embodiment.Therefore, all without departing from the technology of the present invention
The content of scheme, technical spirit any simple modifications, equivalents, and modifications made to the above embodiment according to the present invention,
It all shall fall within the protection scope of the technical scheme of the invention.
Claims (12)
1. a kind of DC relay with arc extinguishing and resistance to shorting function of current, including two stationary contact exits, a straight piece
The movable contact spring of type, a rod member and four blocks of magnet steel；The movable contact spring is loaded on rod member, to make in rod member
It is matched with the lower movable contact for realizing movable contact spring both ends with the stationary contact of two stationary contact exit bottom ends；It is characterized by: institute
State four blocks of magnet steel be arranged respectively at movable contact spring width both sides the position corresponding to sound contact, and correspond to a pair of dynamic
The magnetic pole of the one side towards sound contact of two blocks of magnet steel of stationary contact be set as on the contrary, and correspond to movable contact spring width it is same
The magnetic pole of the one side towards corresponding sound contact of two blocks of magnet steel on side is also set as on the contrary, corresponding to a pair of of sound touching
Yoke folder is also connected between two blocks of magnet steel of point；The top of position between two movable contacts of movable contact spring is equipped with along dynamic spring
The upper magnetizer of the width distribution of piece is equipped with the width distribution along movable contact spring below the position and can be servo-actuated reed one
Play the lower magnetizer of movement；At least one through-hole is equipped in the movable contact spring of the position, so that upper magnetizer and lower magnetizer
It can be close to each other by the through-hole or contacts with each other, and by the upper magnetizer and lower magnetizer on the width of movable contact spring
At least two independent magnetic conductive loops are formed, to utilize each magnetic conductive loop in the corresponding increased magnetic pole pole of lead to the hole site
Face generates the suction on contact force direction in movable contact spring failure high current, goes to resist movable contact spring and stationary contact is drawn
Because of the electrodynamic repulsion force of fault current generation between end.
2. the DC relay according to claim 1 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
It is to be located at relative to the offset position with a pair of of sound contact, and two corresponding to two blocks of magnet steel of same a pair of of sound contact
Block magnet steel is to be dislocatedly distributed.
3. the DC relay according to claim 1 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
Upper magnetizer is magnetizer at least one "-" type, and the lower magnetizer is at least two U-shaped lower magnetizers；Wherein, a U
Magnetizer forms an independent magnetic conductive loop, and adjacent two magnetic conductive loops with magnetizer in corresponding "-" type under type
It is not in contact between two U-shaped lower magnetizers.
4. the DC relay according to claim 3 with arc extinguishing and resistance to shorting function of current, it is characterised in that: extremely
In few two independent magnetic conductive loops, magnetizer is one shared in the "-" type of two adjacent magnetic conductive loops of at least one group
A, the U-shaped lower magnetizer of two of two adjacent magnetic conductive loops is respectively fitting into the lower section of magnetizer in a "-" type.
5. the DC relay according to claim 3 with arc extinguishing and resistance to shorting function of current, it is characterised in that: extremely
In few two independent magnetic conductive loops, magnetizer is independent two in the "-" type of all two adjacent magnetic conductive loops,
The U-shaped lower magnetizer of two of two adjacent magnetic conductive loops is respectively fitting into the lower section of magnetizer in corresponding "-" type.
6. the DC relay according to claim 3 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
Magnetic conductive loop is two, and the movable contact spring is equipped with a through-hole, and each one side wall of two U-shaped lower magnetizers is affixed on movable contact spring respectively
Width respective side, each another side wall of two U-shaped lower magnetizers is each passed through the same through-hole of movable contact spring, and two
There is gap between each another side wall of U-shaped lower magnetizer.
7. the DC relay according to claim 6 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
Each another side wall of two U-shaped lower magnetizers is distributed in the same through-hole of movable contact spring along the length direction of movable contact spring side by side
Or be dislocatedly distributed, it is distributed two magnetic conductive loops corresponding to two U-shaped lower magnetizers side by side along the length direction of movable contact spring
Or it is dislocatedly distributed.
8. the DC relay according to claim 3 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
Magnetic conductive loop is two, and the movable contact spring is set there are two through-hole, and two through-holes are distributed side by side on the length direction of movable contact spring
Or be dislocatedly distributed, each one side wall of described two U-shaped lower magnetizers is affixed on the respective side of the width of movable contact spring respectively, and described two
Each another side wall of a U-shaped lower magnetizer is respectively fitting into two through-holes of movable contact spring, is made corresponding to two U-shaped lower magnetizers
Two magnetic conductive loops be distributed or be dislocatedly distributed side by side along the length direction of movable contact spring.
9. the DC relay according to claim 3 with arc extinguishing and resistance to shorting function of current, it is characterised in that: described
Magnetic conductive loop is three, and the movable contact spring is set there are two through-hole, and three U-shaped lower magnetizers are arranged along the width sequence of movable contact spring
Column, wherein the two sidewalls of the U-shaped lower magnetizer of intermediate one are each passed through two through-holes of movable contact spring, under two of both sides are U-shaped
Each one side wall of magnetizer is affixed on the respective side of the width of movable contact spring respectively, the U-shaped lower magnetizer of two of both sides it is each another
Side wall is each passed through two through-holes of movable contact spring, and has gap between the two side walls in the same through-hole in movable contact spring.
10. the DC relay according to claim 1 with arc extinguishing and resistance to shorting function of current, it is characterised in that: institute
Stating magnetizer is upper armature, and upper armature is fixed on the rod member, and the lower magnetizer is lower armature, downlink ferropexy
In the movable contact spring, the movable contact spring is mounted in the rod member by spring, when the movable contact and stationary contact of movable contact spring
When the stationary contact of point exit is in contact, there are a preset gaps between upper armature and lower armature.
11. the DC relay according to claim 1 with arc extinguishing and resistance to shorting function of current, it is characterised in that: institute
State magnetizer be upper yoke, upper yoke ferropexy in be used to two stationary contact exits are installed shell on, the lower magnetizer
For lower armature, lower armature is fixed on the movable contact spring, and the movable contact spring is mounted in the rod member by spring, when dynamic
When the movable contact of reed is in contact with the stationary contact of stationary contact exit, upper yoke is in contact with lower armature.
12. the DC relay described in 0 or 11 with arc extinguishing and resistance to shorting function of current, feature exist according to claim 1
In: the rod member includes u-bracket, spring base and catch bar, and the top of the catch bar is mutually solid with the spring base
Fixed, the bottom of the u-bracket is mutually fixed with the spring base, is moved composed by the movable contact spring and two U-shaped lower magnetizers
Spring component is mounted in the u-bracket by the spring, wherein the upper surface of movable contact spring against u-bracket top inner wall,
Spring is against between the bottom end of described two U-shaped lower magnetizers and the top of the spring base.
Priority Applications (26)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624114.8A CN109830404A (en) | 2018-12-28 | 2018-12-28 | A kind of DC relay with arc extinguishing and resistance to shorting function of current |
| KR1020237039044A KR20230159645A (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| KR1020237039041A KR102652524B1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP23202512.2A EP4300534A3 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP23202501.5A EP4283650A3 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| KR1020237039033A KR102652528B1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP23202491.9A EP4283649A3 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP23202507.2A EP4280245A3 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| US17/292,418 US11670472B2 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP23202516.3A EP4280246A3 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| KR1020217013254A KR102606473B1 (en) | 2018-11-09 | 2019-11-08 | Direct current relay to prevent short circuit current |
| KR1020237039035A KR102652506B1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| KR1020237039039A KR102652522B1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| EP19881489.9A EP3879553B1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| JP2021524964A JP7341234B2 (en) | 2018-11-09 | 2019-11-08 | DC relay for short circuit current prevention |
| PCT/CN2019/116808 WO2020094135A1 (en) | 2018-11-09 | 2019-11-08 | Direct-current relay resistant to short-circuit current |
| US18/305,373 US20230260730A1 (en) | 2018-11-09 | 2023-04-23 | Direct-current relay capable of extinguishing arc and resisting short-circuit current |
| US18/305,376 US20230260731A1 (en) | 2018-11-09 | 2023-04-23 | Direct-current relay having a function of extinguishing arc and resisting short-circuit current |
| US18/305,379 US20230260733A1 (en) | 2018-11-09 | 2023-04-24 | Direct-current relay having a function of extinguishing arc and resisting short-circuit current |
| US18/305,378 US20230260732A1 (en) | 2018-11-09 | 2023-04-24 | Direct-current relay capable of extinguishing arc and resisting short-circuit current |
| US18/305,380 US20230260734A1 (en) | 2018-11-09 | 2023-04-24 | Direct-current relay capable of extinguishing arc and resisting short-circuit current |
| JP2023134137A JP2023154099A (en) | 2018-11-09 | 2023-08-21 | Dc relay for preventing short-circuit current |
| JP2023134138A JP2023154100A (en) | 2018-11-09 | 2023-08-21 | Dc relay for preventing short-circuit current |
| JP2023134139A JP2023154101A (en) | 2018-11-09 | 2023-08-21 | Dc relay for preventing short-circuit current |
| JP2023134135A JP2023154097A (en) | 2018-11-09 | 2023-08-21 | Dc relay for preventing short-circuit current |
| JP2023134136A JP2023154098A (en) | 2018-11-09 | 2023-08-21 | Dc relay for preventing short-circuit current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811624114.8A CN109830404A (en) | 2018-12-28 | 2018-12-28 | A kind of DC relay with arc extinguishing and resistance to shorting function of current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109830404A true CN109830404A (en) | 2019-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811624114.8A Pending CN109830404A (en) | 2018-11-09 | 2018-12-28 | A kind of DC relay with arc extinguishing and resistance to shorting function of current |
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| Country | Link |
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| CN (1) | CN109830404A (en) |
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| WO2020094135A1 (en) * | 2018-11-09 | 2020-05-14 | 厦门宏发电力电器有限公司 | Direct-current relay resistant to short-circuit current |
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