CN108807081A - A kind of electromagnetic relay of vertical magnetic structure - Google Patents
A kind of electromagnetic relay of vertical magnetic structure Download PDFInfo
- Publication number
- CN108807081A CN108807081A CN201810509877.1A CN201810509877A CN108807081A CN 108807081 A CN108807081 A CN 108807081A CN 201810509877 A CN201810509877 A CN 201810509877A CN 108807081 A CN108807081 A CN 108807081A
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- Prior art keywords
- vertical
- movable contact
- contact spring
- yoke
- glue groove
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Links
- 239000003292 glue Substances 0.000 claims abstract description 144
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 235000014676 Phragmites communis Nutrition 0.000 claims description 5
- 239000000693 micelle Substances 0.000 abstract description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 235000010987 pectin Nutrition 0.000 description 2
- 229920001277 pectin Polymers 0.000 description 2
- 239000001814 pectin Substances 0.000 description 2
- 206010001541 Akinesia Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Electromagnets (AREA)
Abstract
The invention discloses a kind of electromagnetic relays of vertical magnetic structure, including bobbin, iron core, armature, yoke and movable contact spring；The iron core interstitial hole in a vertical shape mounted in bobbin；Yoke is L-type and is matched with bobbin；Movable contact spring is L-type, and is respectively cooperating in yoke, armature；In vertical one side of movable contact spring, has and be connected with yoke and immotile fixed part and the moving part that can be swung with the movement of armature；In vertical one side of yoke, corresponding to movable contact spring it is vertical on one side fixed part and movable contact spring it is vertical while the transitional region ed between moving part in, equipped with the gear glue groove towards movable contact spring with for accommodating the glue of the inflow of the gap between bobbin and yoke, which is at least located at the junction at edge and yoke corresponding to the width of movable contact spring.With this structure, it can avoid the problem that making the viscous dead or generation micelle at the movable position of spring that contact be caused to be not turned on because glue penetrates into, improve the reliability and stability of relay.
Description
Technical field
The present invention relates to relay technical fields, more particularly to a kind of electromagnetic relay of vertical magnetic structure.
Background technology
A kind of electromagnetic relay of vertical magnetic structure of the prior art, including bobbin, iron core, armature, yoke and dynamic
The components such as reed, wherein vertical magnetic structure is formed in the iron core interstitial hole in a vertical shape mounted in bobbin, yoke is L-type, yoke
The horizontal of iron is mutually fixed in the bottom of bobbin and the bottom end of iron core on one side, the vertical side for being located at bobbin on one side of yoke,
The top on vertical one side of yoke forms the yoke edge of a knife, and movable contact spring is also L-type, vertical one side and vertical the one of yoke of movable contact spring
While be connected, and the vertical composition that extends downwardly on one side of movable contact spring moves spring leading foot, movable contact spring it is horizontal on one side then with armature phase
It is fixed, and one end of armature is made to coordinate on the top of iron core by shaft of the yoke edge of a knife, the top end face of iron core is pole-face, dynamic
In vertical one side of reed, the lower part on vertical one side of movable contact spring is fixed together with yoke so that vertical one side of movable contact spring
Top formed moving part, can be swung with the movement of armature, when the coil is energized, armature to the pole-face direction of iron core move
It is dynamic, so that movable contact is closed with stationary contact (normally opened stationary contact).The electromagnetic relay of this structure is needed in assembly by bottom court
Upper progress dispensing processing, since there are bigger gaps with yoke for bobbin, so in bottom dispensing, glue can be from these seams
It is flowed into inside relay in gap, flows to the moving part on vertical one side of movable contact spring, caused consequence is：
1, after adhesive curing, keep movable contact spring moving part viscous dead, functional failure occurs in akinesia；
2, the movable position of movable contact spring is stained with glue, but without gluing dead moving part, in this way, relay in the later stage in use, by
In the continuous action of movable contact spring, the glue for making glue fall, and falling possibly into the fulcrum of the moving part of movable contact spring at, cause to move
Reed is stuck, and relay function is made to fail；The glue fallen may also be moved at contact, and relay is caused to be not turned on.
Invention content
It is an object of the invention to overcome the deficiency of the prior art, a kind of electromagnetic relay of vertical magnetic structure is provided,
It is improved by structure, can avoid making the viscous dead or generation micelle at the movable position of spring that contact be caused to be not turned on because glue penetrates into
Problem reduces the parts per million of relay failure to make relay avoid caused failure, improves the reliable of relay
Property and stability.
The technical solution adopted by the present invention to solve the technical problems is：A kind of electromagnetic relay of vertical magnetic structure,
Including bobbin, iron core, armature, yoke and movable contact spring；The iron core interstitial hole in a vertical shape mounted in bobbin；The yoke
For L-type, the horizontal of yoke is mutually fixed in the bottom of bobbin and the bottom end of iron core on one side, and the vertical of yoke is located at bobbin on one side
Side；Movable contact spring is L-type, and vertical vertical with yoke on one side of movable contact spring while is connected, level one side of movable contact spring with
Armature is mutually fixed, and makes armature cooperation in the top on iron core top；In vertical one side of movable contact spring, has and be connected with yoke
And immotile fixed part and the moving part that can be swung with the movement of armature；It is corresponding in vertical one side of yoke
In movable contact spring it is vertical on one side fixed part and movable contact spring it is vertical while the transitional region ed between moving part in, be equipped with
Towards movable contact spring gear glue groove with for accommodating the glue of the inflow of the gap between bobbin and yoke, which is at least located at
The junction at edge and yoke corresponding to the width of movable contact spring.
The movable contact spring it is vertical on one side fixed part and movable contact spring it is vertical while and be equipped with platform between transitional region
Rank, and movable contact spring it is vertical on one side transitional region width be less than movable contact spring it is vertical while the width of fixed part；Institute
Gear glue groove is stated to be located at corresponding at step.
The outer ledge of the step of the movable contact spring is additionally provided with rounded corner.
The gear glue groove is strip, and along the horizontally arranged of vertical one side of yoke.
The gear glue groove is one, and the both ends of the gear glue groove are at least covered in the transition region on vertical one side of the movable contact spring
The both sides of the width in domain.
The gear glue groove is one, the two sides of the width on vertical one side of the both ends difference pass-out yoke of the gear glue groove
Edge.
The gear glue groove is two, and two gear glue grooves are respectively provided at the fixed part and movable contact spring on vertical one side of movable contact spring
Vertical one side transitional region between both sides step at.
The centre on vertical one side of the movable contact spring is equipped with a long stripes through hole being vertically distributed, the long stripes through hole
One end vertical one side for being in the movable contact spring transitional region in, the other end of long stripes through hole is in the movable contact spring
In the fixed part on vertical one side, each inner opposite end of two gears glue groove is covered each by the long stripes through hole.
In two gears glue groove, wherein the width of rebate of a gear glue groove is more than the width of rebate of another gear glue groove,
And the gear glue groove is located at corresponding to the side that the gap between bobbin and yoke is bigger.
The both sides notched wall of the width of the gear glue groove is set as inclined-plane or arc.
Compared with prior art, the beneficial effects of the invention are as follows：
1, the present invention corresponds to the fixed part on vertical one side of movable contact spring as a result of in vertical one side of yoke
In transitional region between the moving part on vertical one side of movable contact spring, equipped with towards the gear glue groove of movable contact spring to be used for accommodating
The glue that gap between bobbin and yoke flows into, and the gear glue groove be at least located at edge corresponding to the width of movable contact spring with
The junction of yoke.This structure of the present invention, when glue is flowed by the gap between bobbin and yoke inside relay, glue
Can be along the edge of yoke and movable contact spring toward what is flowed down, when flowing to gear glue groove, glue can all penetrate into gear glue groove, make glue will not
The moving part of movable contact spring is penetrated into, can avoid making the viscous dead of the movable position of spring or generate micelle to cause to touch because glue penetrates into
The problem of point is not turned on, to make relay avoid caused failure, reduces the parts per million of relay failure, improves
The reliability and stability of relay.The gear glue groove of the present invention must be arranged at the fixed part on vertical one side corresponding to movable contact spring
In transitional region between the moving part on vertical one side of movable contact spring, if gear glue groove to be located to vertical one side of movable contact spring
Fixed part in, since yoke and movable contact spring are close together, glue can not just drain into gear glue groove, and gear glue groove does not have work
With, if gear glue groove is located at the moving part on vertical one side of movable contact spring, glue passes to the moving part of movable contact spring,
It cannot play a role.
2, the present invention is located at the step corresponding to movable contact spring as a result of will keep off glue groove, when glue flows at this,
When being exactly that glue flows to dynamic spring narrow part, glue is also along dynamic spring edge toward yoke intermediate flow；In dynamic spring narrow part, increase gear glue
Slot, glue are introduced to gear glue groove, can to the maximum extent drain into glue in gear glue groove, as pectin requires to continue flow down, glue
Gear glue groove must be filled up, the volume of gear glue groove can be determined according to the amount of glue, so that glue is not overflowed gear glue groove, can protect in this way
Demonstrate,prove glue no longer flow down.
3, the present invention is set as strip as a result of will keep off glue groove, and is set along the horizontal direction on vertical one side of yoke
It sets, then keeping off most of notch of glue groove can be covered by movable contact spring, and movable contact spring plays the role of glue gear in gear glue groove.
Invention is further described in detail with reference to the accompanying drawings and embodiments；But a kind of vertical magnetic circuit knot of the present invention
The electromagnetic relay of structure is not limited to embodiment.
Description of the drawings
Fig. 1 is the upward view of the embodiment of the present invention one；
Fig. 2 is the D structure schematic diagram of the local structure (after removal shell) of the embodiment of the present invention one；
Fig. 3 is the sectional view of the local structure (after removal shell) of the embodiment of the present invention one；
Fig. 4 is the side view of the local structure (after removal shell) of the embodiment of the present invention one；
Fig. 5 is the D structure schematic diagram of the yoke of the embodiment of the present invention one；
Fig. 6 is the side view of the yoke of the embodiment of the present invention one；
Fig. 7 is the side view of the yoke of the embodiment of the present invention two；
Fig. 8 is the side view of the yoke of the embodiment of the present invention three；
Fig. 9 is the side view of the yoke of the embodiment of the present invention four.
Specific implementation mode
Embodiment one
Shown in Fig. 1 to Fig. 6, a kind of electromagnetic relay of vertical magnetic structure of the invention, including bobbin 1, iron
Core 2, armature 3, yoke 4, movable contact spring 5 and shell 6；The iron core 2 is in a vertical shape in the interstitial hole of bobbin 1；The yoke
Iron 4 is L-type, and the horizontal of yoke 4 41 is mutually fixed on one side in the bottom of bobbin 1 and the bottom end of iron core 2, vertical one side of yoke 4
42 are located at the side of bobbin 1, and the top on vertical one side 42 of yoke forms the yoke edge of a knife；Movable contact spring 5 is L-type, movable contact spring 5
It is vertical on one side 52 with yoke 4 it is vertical while 42 and are connected, level one side 51 of movable contact spring 5 is fixed with 3 phase of armature, and makes armature
3 one end coordinates by shaft of the yoke edge of a knife on 2 tops of iron core, and the top end face of iron core 2 is pole-face 21；In movable contact spring 5
It is vertical on one side in 52, have and is connected with yoke and immotile fixed part 521 and can be swung with the movement of armature 3
Moving part 522, vertical 52 fixed part 521 on one side of movable contact spring 5 and movable contact spring it is vertical while the moving part 522 52ed
Between there is transitional region 523, be equivalent to movable contact spring vertical 52 moving part 522 on one side and movable contact spring it is vertical while
There is a line of demarcation 71 between 52 transitional region 523, in vertical 52 transitional region 523 on one side and movable contact spring 5 of movable contact spring
Vertical 52 fixed part 521 on one side between have a line of demarcation 72；In vertical one side 42 of yoke 4, correspond to dynamic spring
Piece 5 it is vertical on one side 52 fixed part 521 and movable contact spring it is vertical while the moving part 522 52ed between transitional region
(being equivalent between line of demarcation 71 and line of demarcation 72) is equipped with the gear glue groove 8 towards movable contact spring to be used for accommodating from bobbin 1 in 523
The glue that gap 10 between yoke 4 flows into, the gear glue groove 8 are at least located at the transition on vertical one side 52 corresponding to movable contact spring 5
The junction at the edge and yoke 4 of the width in region 523.Wherein, above-mentioned component is included in interior by shell 6.
In the present embodiment, vertical 52 fixed part 521 on one side of movable contact spring 5 and movable contact spring 5 it is vertical while the mistake 52ed
It crosses between region 523 equipped with step 524, and the width of vertical 52 transitional region 523 on one side of movable contact spring 5 is less than movable contact spring 5
Vertical 52 fixed part 521 on one side width, that is, movable contact spring 5 narrows here；The gear glue groove 8 is located at corresponding to platform
At rank 524.
In the present embodiment, the outer ledge of the step 524 of the movable contact spring 5 is additionally provided with rounded corner 526.
In the present embodiment, gear glue groove 8 is strip, and along the horizontally arranged of vertical one side 42 of yoke 4.
In the present embodiment, gear glue groove 8 is two, and two gear glue grooves 8 are respectively provided at the fixation on vertical one side 52 of movable contact spring 5
At both sides step 524 between part 522 and vertical 52 transitional region 523 on one side of movable contact spring 5.
In the present embodiment, the centre on vertical one side 52 of movable contact spring 5 is equipped with a long stripes through hole being vertically distributed
525, one end of the long stripes through hole 525 is in vertical 52 transitional region 523 on one side of the movable contact spring 5, and strip is logical
The other end in hole 525 is in vertical 52 fixed part 521 on one side of the movable contact spring 5, and described two are kept off each interior of glue groove 8
Side one end is covered each by the long stripes through hole 525.
In the present embodiment, the both sides notched wall 81 (i.e. the notched walls on both sides up and down) of the width of the gear glue groove 8 is set as oblique
Face or arc.
A kind of electromagnetic relay of vertical magnetic structure of the present invention uses in vertical one side 42 of yoke 4, corresponding
In movable contact spring 5 it is vertical on one side 52 fixed part 521 and movable contact spring 52 it is vertical while the moving part 522 52ed between mistake
It crosses in region 523, equipped with the gear glue groove 8 towards movable contact spring to be flowed into for accommodating the gap 10 between bobbin 1 and yoke 4
Glue, and the gear glue groove 8 be at least located at the vertical edge of the width of 52 transitional region 523 on one side corresponding to movable contact spring 5 with
The junction of yoke 4.This structure of the present invention, relay is to be inverted when dispensing, then passes through the dynamic spring with chamfering
Piece is drained:It, can be along the edge flowing of part since glue has viscosity.When glue is by the gap 10 between bobbin and yoke
Flow into relay inside when, glue can along the edge of yoke 4 and movable contact spring 5 toward flow down.When movable contact spring 5 is by wide constriction, and
There are rounded corners 526 at constriction, and material is thus formed the flow circuits of an other glue, rounded corner of the glue along movable contact spring narrow part
526 flow with the side to narrow, flow into movable contact spring narrow part.Increase gear glue groove 8 in the movable contact spring narrow part position of yoke, flows into dynamic
The glue of reed narrow part will be introduced into gear glue groove 8.In this way, glue is just made not penetrate into the moving part 522 of movable contact spring 5, energy
It enough avoids the problem that making the viscous dead or generation micelle at the movable position of spring that contact be caused to be not turned on because glue penetrates into, to make relay
Device avoids caused failure, reduces the parts per million of relay failure, improves the reliability and stability of relay.This
The gear glue groove 8 of invention must be arranged at vertical 52 fixed part 521 on one side and vertical the one of movable contact spring 5 corresponding to movable contact spring 5
In transitional region 523 between the moving part 522 on side 52, between line of demarcation 71 and line of demarcation 72, if gear glue groove is located at
In vertical 52 fixed part 521 on one side of movable contact spring 5, i.e., line of demarcation 72 is hereinafter, since yoke 4 and movable contact spring 5 are tightly attached to one
It rises, glue can not just drain into gear glue groove, and gear glue groove does not have effect, if gear glue groove to be located to vertical one side 52 of movable contact spring 5
Moving part 522 at, i.e. 71 or more line of demarcation, glue passes to the moving part of movable contact spring, can not play a role.
A kind of electromagnetic relay of vertical magnetic structure of the present invention uses and gear glue groove 8 is located at corresponding to movable contact spring
Step 524 at, when glue flows at this, that is, when glue flows to dynamic spring narrow part, glue is also along dynamic spring edge into yoke
Between flow；In dynamic spring narrow part, increase gear glue groove 8, glue with mobility due to that can be introduced in gear glue groove 8, into gear glue groove 8
Glue can with the effect of gravity and to flow down, reach gear glue groove 8 lower edge, with being continuously increased for glue, some glue meeting
Gear 8 lower edge of glue groove is overflowed, since there is glue adhesive, the glue that gear 8 lower edge of glue groove is overflowed in this part can form protrusion part,
Since gear glue groove 8 is strip, and along the horizontally arranged of vertical one side 42 of yoke 4, it is equivalent in the perpendicular of yoke 4
The horizontal direction on straight one side 42 forms a gear glue raised line, and to further glue be prevented to flow downward, this structure can maximum
Limit glue is drained into gear glue groove 8, if pectin requires to continue flow down, glue must fill up gear glue groove 8, in this way, can
The volume that gear glue groove is determined with the amount according to glue, makes glue not overflow gear glue groove, can guarantee glue no longer flow down in this way.
Embodiment two
It is shown in Figure 7, a kind of electromagnetic relay of vertical magnetic structure of the invention, the difference with embodiment one
It is, in two gear glue grooves 8, wherein the width of rebate of a gear glue groove is more than the width of rebate of another gear glue groove, and it is described
One gear glue groove is located at corresponding to the side that the gap between bobbin 1 and yoke 4 is bigger.
Embodiment three
It is shown in Figure 8, a kind of electromagnetic relay of vertical magnetic structure of the invention, the difference with embodiment one
It is, the gear glue groove 8 is one, and the both ends of the gear glue groove 8 are at least covered in the transition on vertical one side 52 of the movable contact spring 5
The both sides of the width in region 523.
Example IV
It is shown in Figure 9, a kind of electromagnetic relay of vertical magnetic structure of the invention, the difference with embodiment one
It is, the gear glue groove is one, the both sides of the edge of the width on vertical one side of the both ends difference pass-out yoke of the gear glue groove.
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 (10)
1. a kind of electromagnetic relay of vertical magnetic structure, including bobbin, iron core, armature, yoke and movable contact spring；The iron core
Interstitial hole in a vertical shape mounted in bobbin；The yoke is L-type, yoke it is horizontal on one side in the bottom of bobbin and iron core
Bottom end is mutually fixed, the vertical side for being located at bobbin on one side of yoke；Movable contact spring is L-type, vertical one side of movable contact spring and yoke
It is vertical be connected on one side, the horizontal of movable contact spring is mutually fixed with armature on one side, and makes armature cooperation in the top on iron core top；?
In vertical one side of movable contact spring, has and be connected with yoke and immotile fixed part and can be swung with the movement of armature
Moving part；It is characterized in that：In vertical one side of yoke, corresponds to the fixed part on vertical one side of movable contact spring and move
In transitional region between the moving part on vertical one side of reed, equipped with towards the gear glue groove of movable contact spring to be used for accommodating from line
Glue that gap between coil and yoke flows into, the gear glue groove are at least located at edge and yoke corresponding to the width of movable contact spring
Junction.
2. the electromagnetic relay of vertical magnetic structure according to claim 1, it is characterised in that：The movable contact spring it is vertical
On one side fixed part and movable contact spring it is vertical while and be equipped with step between transitional region, and the mistake on vertical one side of movable contact spring
Cross region width be less than movable contact spring vertical one side fixed part width；The gear glue groove is located at corresponding at step.
3. the electromagnetic relay of vertical magnetic structure according to claim 2, it is characterised in that：The step of the movable contact spring
Outer ledge be additionally provided with rounded corner.
4. the electromagnetic relay of vertical magnetic structure according to claim 1 or 2 or 3, it is characterised in that：The gear glue groove
For strip, and along the horizontally arranged of vertical one side of yoke.
5. the electromagnetic relay of vertical magnetic structure according to claim 4, it is characterised in that：The gear glue groove is one
Item, the both ends of the gear glue groove are at least covered in the both sides of the width of the transitional region on vertical one side of the movable contact spring.
6. the electromagnetic relay of vertical magnetic structure according to claim 4, it is characterised in that：The gear glue groove is one
Item, the both sides of the edge of the width on vertical one side of the both ends difference pass-out yoke of the gear glue groove.
7. the electromagnetic relay of vertical magnetic structure according to claim 4, it is characterised in that：The gear glue groove is two
Item, two gear glue grooves be respectively provided at movable contact spring it is vertical on one side fixed part and movable contact spring it is vertical while transitional region it
Between both sides step at.
8. the electromagnetic relay of vertical magnetic structure according to claim 7, it is characterised in that：The movable contact spring it is vertical
The centre on one side is equipped with a long stripes through hole being vertically distributed, and one end of the long stripes through hole is in the perpendicular of the movable contact spring
In the transitional region on straight one side, the other end of long stripes through hole is in the fixed part on vertical one side of the movable contact spring, institute
Each inner opposite end for stating two gear glue grooves is covered each by the long stripes through hole.
9. the electromagnetic relay of vertical magnetic structure according to claim 7, it is characterised in that：Two gears glue groove
In, wherein the width of rebate of a gear glue groove is more than the width of rebate of another gear glue groove, and the gear glue groove is located at pair
Gap that should be between bobbin and yoke is the side of bigger.
10. the electromagnetic relay of vertical magnetic structure according to claim 4, it is characterised in that：The width of the gear glue groove
The both sides notched wall of degree is set as inclined-plane or arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810509877.1A CN108807081B (en) | 2018-05-24 | 2018-05-24 | Electromagnetic relay with vertical magnetic circuit structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509877.1A CN108807081B (en) | 2018-05-24 | 2018-05-24 | Electromagnetic relay with vertical magnetic circuit structure |
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| CN108807081A true CN108807081A (en) | 2018-11-13 |
| CN108807081B CN108807081B (en) | 2023-11-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110444445A (en) * | 2019-08-09 | 2019-11-12 | 四川宏发电声有限公司 | A kind of clapper type relay bobbin and clapper type relay |
| WO2022152219A1 (en) * | 2021-01-15 | 2022-07-21 | 厦门宏发电力电器有限公司 | Clapping-type bistable magnetic circuit structure and magnetic latching relay |
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| CN110444445A (en) * | 2019-08-09 | 2019-11-12 | 四川宏发电声有限公司 | A kind of clapper type relay bobbin and clapper type relay |
| WO2022152219A1 (en) * | 2021-01-15 | 2022-07-21 | 厦门宏发电力电器有限公司 | Clapping-type bistable magnetic circuit structure and magnetic latching relay |
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