CN102800532A - Electromagnetic relay and contact system thereof - Google Patents
Electromagnetic relay and contact system thereof Download PDFInfo
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- CN102800532A CN102800532A CN2012102549989A CN201210254998A CN102800532A CN 102800532 A CN102800532 A CN 102800532A CN 2012102549989 A CN2012102549989 A CN 2012102549989A CN 201210254998 A CN201210254998 A CN 201210254998A CN 102800532 A CN102800532 A CN 102800532A
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Abstract
The invention discloses an electromagnetic relay and a contact system thereof. The contact system comprises a movable spring part consisting of a movable spring sheet and a movable contact, a static spring part consisting of a static spring sheet and a static contact, a stopper and a pushing element, wherein the movable spring part, the static spring part, the stopper and the pushing element are arranged at the matched positions respectively, so that in the case that the pushing element acts, the movable spring sheet is released from a first position where the movable spring part is contacted with the stopper, and swings towards a second position where the movable spring part is contacted with the static spring part; a tongue spring with a preset elastic force is further arranged between the movable spring sheet and the stopper, so that the movable spring sheet is further contacted with the stopper at the first position via the tongue spring; and in the case that the pushing element starts to act, the contact between the movable spring part and the stopper is released, the contact between the movable spring sheet and the stopper via the tongue spring is delayed to release due to the action of the preset elastic force. After adopting the structure, a purpose of adjusting an action voltage can be achieved by adjusting the tongue spring without adjustment on the movable spring sheet or influence on pushing progress.
Description
Technical field
The present invention relates to a kind of electromagnetic relay, particularly relate to a kind of contact system and electromagnetic relay thereof of electromagnetic relay.
Background technology
Electromagnetic relay is widely used in the automatic control equipment, because the needs of development in science and technology require the electromagnetic relay more compact structure, volume is littler, and sensitivity is higher, and functional reliability is higher, therefore needs the high conformity of electromagnetic relay structure.And be the consistency that guarantees the operation voltage parameter of electromagnetic relay; Usually to adjust the mechanical counter-force of electromagnetic relay through correcting process; Main mode is the position of adjustment movable contact spring or stop at present, and this mode can have a strong impact on the consistency of electromagnetic relay structure.As adjust movable contact spring, not only make movable contact spring receive mechanical deformation, and can influence the whole counter-force of electromagnetic relay, thereby operation voltage and release voltage all change; As adjust the stop position, and the promotion stroke of electromagnetic relay is changed, the size in influencing contactor gap, and also less to the influence of operation voltage adjustment.
The contact system of the electromagnetic relay of prior art generally includes the moving spring part that contains movable contact spring and moving contact, contains the quiet spring part of quiet spring and fixed contact, stop and impeller; Moving spring part, quiet spring part, stop and impeller are located at the position of matching respectively; Make that when impeller move movable contact spring is contacted by moving spring part and the contacted primary importance disengagement of stop and is flapped toward and moves spring partly and the contacted second place of quiet spring part; Fig. 1 is the structural representation of the contact system of movable contact spring when primary importance of the electromagnetic relay of prior art; Fig. 2 is the structural representation of the contact system of movable contact spring when the second place of the electromagnetic relay of prior art; The contact system of prior art comprises moving spring part 6 ＇ that contain movable contact spring 60 ＇ and moving contact 61 ＇, two quiet spring part 7 ＇ that are made up of quiet spring 70 ＇ and fixed contact 71 ＇, a stop 5 ＇, an impeller 31 ＇.As shown in Figure 1, when impeller 31 ＇ did not promote movable contact spring 60 ＇, movable contact spring 60 ＇ were in primary importance, and this moment, moving spring part 6 ＇ contacted with stop 5 ＇; As shown in Figure 2, after impeller 31 ＇ promoted movable contact spring 60 ＇, movable contact spring 60 ＇ moved to the second place, and this moment, moving spring part 6 ＇ did not contact with stop 5 ＇, and moving contact 61 ＇ contact with fixed contact 71 ＇.
Suction, counter-force curve synoptic diagram when Fig. 3 is the contact system adjustment movable contact spring of electromagnetic relay of prior art; Suction, counter-force curve synoptic diagram when Fig. 4 is the contact system adjustment stop of electromagnetic relay of prior art.For ease of analyzing match condition, the suction of electromagnetic relay and counter-force curve all are to measure at same position usually, and mostly this position is the place that movable contact spring is pushed measurement point, is fine equally in other position measurement certainly.In suction, the counter-force curve; Abscissa is " a promotion stroke "; Be the second place to the displacement of the impeller motion of primary importance, wherein movable contact spring is in the second place 0 the time, and movable contact spring is in primary importance during the c point; Wherein a point rigidly connects the contact for moving contact and fixed contact, and the b point rigidly connects the contact for movable contact spring or moving contact and stop; Ordinate is the power value, thereby wherein suction is that impeller receives the magnetic force that coil produces and promotes movable contact spring from the power of primary importance to second place motion, and counter-force is that coil makes movable contact spring from the power of the second place to the primary importance motion when not producing magnetic force.
In typical case, electromagnetic relay action is a suction when increasing to " suction under the operation voltage ", the counter-force that suction is ordered greater than b, and movable contact spring can move to the second place from primary importance, and moving contact is contacted with fixed contact; And electromagnetic relay to discharge be suction when being reduced to " suction under the release voltage ", suction is less than 0 counter-force, movable contact spring can move to primary importance from the second place.
Referring to shown in Figure 3; Curve M 1 ＇ is " suction under the operation voltage "; Curve M 2 ＇ are " suction under the release voltage ", and curve S 1 ＇ is " counter-force ", and curve N 1 ＇ is " suction behind the adjustment movable contact spring under the operation voltage "; Curve N 2 ＇ are " suction behind the adjustment movable contact spring under the release voltage ", and curve R1 ＇ is " counter-force behind the adjustment movable contact spring ".When the adjustment movable contact spring reduces operation voltage; Movable contact spring is adjusted distortion; Make counter-force be reduced to " counter-force behind the adjustment movable contact spring ", shown in single-point line among Fig. 3, the needed suction of the actuating of relay is reduced to " suction behind the adjustment movable contact spring under the operation voltage "; And relay discharges needed suction and also is reduced to " suction behind the adjustment movable contact spring under the release voltage ", shown in double dot dash line among Fig. 3.This adjustment not only makes movable contact spring receive mechanical deformation, and whole counter-force all is affected operation voltage and release voltage are all changed, and also can shorten " promotion stroke ".The instability that these all make relay construction become, thus consistency influenced.Otherwise, as the same when the adjustment movable contact spring raises operation voltage.
Referring to shown in Figure 4; Curve M 3 ＇ are " suction under the operation voltage ", and curve M 4 ＇ are " suction under the release voltage ", and curve S 2 ＇ are " counter-force "; Curve N 3 ＇ are " suction behind the adjustment stop under the operation voltage ", and curve R2 ＇ is " counter-force behind the adjustment stop ".When the adjustment stop reduced operation voltage, not only " promotion stroke " was reduced, and primary importance has become the d point by the c point, and the c point becomes the d point to " counter-force behind the adjustment stop " between b ＇ point to the counter-force between the b point; And the amount of operation voltage adjustment is very little, as shown in Figure 4, and " suction behind the adjustment stop under the operation voltage " is with preceding " suction under the operation voltage " difference of adjustment is very not little; Contact gap is diminished, by a point before the adjustment not to the b dot spacing from leaving to b ＇ dot spacing for a point.The instability that these all make relay construction become, thus consistency influenced.Otherwise, as the same when the adjustment stop raises operation voltage.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of contact system and electromagnetic relay thereof of electromagnetic relay are provided; Through between the stop of the movable contact spring of contact system and contact system, setting up tongue; Need not adjust movable contact spring, not influence under the situation of promotion process, reach the purpose of adjustment operation voltage.
The technical solution adopted for the present invention to solve the technical problems is: a kind of contact system of electromagnetic relay comprises: contain the moving spring part of movable contact spring and moving contact, contain the quiet spring part of quiet spring and fixed contact, stop and impeller; Moving spring part, quiet spring part, stop and impeller are located at the position of matching respectively; Make that when impeller move movable contact spring is contacted by moving spring part and the contacted primary importance disengagement of stop and is flapped toward and moves spring partly and the contacted second place of quiet spring part; Between movable contact spring and stop, also establish tongue, make movable contact spring also contact with stop through tongue in said primary importance with the elastic force of presetting; When impeller begins to move and when making that said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, said movable contact spring postpones disengagement through tongue with contacting of stop.
One end of said tongue is connected with movable contact spring, and movable contact spring is when primary importance, and the other end of tongue is elastically against on the said stop.
Said tongue is part independently, and an end of tongue is connected with movable contact spring and fixes.
Said tongue and movable contact spring are structure as a whole, and an end of tongue is connected with the movable contact spring one.
One end of said tongue is connected with stop, and movable contact spring is when primary importance, and the other end of tongue is elastically against on the said movable contact spring.
Said tongue is part independently, and an end of tongue is connected with stop and fixes.
Said tongue and stop are structure as a whole, and an end of tongue is connected with the stop one.
Said moving contact is part independently, and moving contact is fixed on the movable contact spring.
Said moving contact and movable contact spring are structure as a whole, and said moving contact shapes on movable contact spring.
Said fixed contact is part independently, and fixed contact is fixed on the quiet spring.
Said fixed contact and quiet spring are structure as a whole, and said stationary contact shapes on quiet spring.
Said stop is the quiet spring part that contains quiet spring and fixed contact.
The contact system of a kind of electromagnetic relay of the present invention is actually and comprises: contain the moving spring part of movable contact spring and moving contact, contain the quiet spring part of quiet spring and fixed contact, stop, impeller and tongue; Said movable contact spring can move between the primary importance and the second place, and when impeller did not drive the movable contact spring swing, movable contact spring was in the first position, and this moment, moving spring part contacted with stop, and movable contact spring then contacts with stop through tongue; After impeller drove the movable contact spring swing, movable contact spring moved to the second place, and this moment, movable contact spring did not contact with stop through tongue, and tongue can be to be connected on the movable contact spring, also can be to be connected on the stop, and moving contact then contacts with fixed contact; And in the process of movable contact spring from the primary importance to the second place; Moving spring part is thrown off with contacting earlier of stop; Being only movable contact spring then throws off with contacting again of stop through tongue; That is to say that after moving the spring part and contacting of stop thrown off, movable contact spring postpones one section just disengagement later on through contacting of tongue and stop; When tongue is when being connected on the movable contact spring, tongue postpones one section with contacting of stop and just throws off later on; When tongue is when being connected on the stop, tongue postpones one section with contacting of movable contact spring and just throws off later on, because tongue is to be connected on the stop, is equivalent to movable contact spring and postpones one section just disengagement later on through tongue and contacting of stop.
A kind of electromagnetic relay comprises magnetic circuit part, contact system, base and shell; Said magnetic circuit part, said contact system are contained on the base respectively; Said magnetic circuit partly comprises yoke, iron core and coil; Said contact system comprises: contain the moving spring part of movable contact spring and moving contact, contain the quiet spring part of quiet spring and fixed contact, stop and impeller; Said impeller is an armature, and partly matches with magnetic circuit; Said moving spring part, quiet spring part, stop and armature are located at the position of matching respectively; Make when coil electricity and armature when inhaling that movable contact spring is thrown off by moving spring part and the contacted primary importance of stop and contacted and be flapped toward and move spring partly and the contacted second place of quiet spring part to iron core; Between movable contact spring and stop, also establish the tongue with the elastic force of presetting, this tongue one is connected on the movable contact spring, makes movable contact spring also contact with stop through tongue in said primary importance; When the armature suction makes that to iron core said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, the tongue that said movable contact spring one connects postpones disengagement with contacting of stop.
The invention has the beneficial effects as follows, between movable contact spring and stop, also establish tongue, make movable contact spring also contact with stop through tongue in said primary importance with the elastic force of presetting owing to adopted; When impeller begins to move and when making that said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, said movable contact spring postpones disengagement through tongue with contacting of stop.This structure can need not adjusted movable contact spring, not influence under the situation of promotion process through between the stop of the movable contact spring of contact system and contact system, setting up tongue, utilizes the adjustment tongue, reaches the purpose of adjustment operation voltage.
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain; But the contact system and the electromagnetic relay thereof of a kind of electromagnetic relay of the present invention are not limited to embodiment.
Description of drawings
Fig. 1 is the structural representation of the contact system of movable contact spring when primary importance of the electromagnetic relay of prior art;
Fig. 2 is the structural representation of the contact system of movable contact spring when the second place of the electromagnetic relay of prior art;
Suction, counter-force curve synoptic diagram when Fig. 3 is the contact system adjustment movable contact spring of electromagnetic relay of prior art;
Suction, counter-force curve synoptic diagram when Fig. 4 is the contact system adjustment stop of electromagnetic relay of prior art;
Fig. 5 is the structural representation of the contact system of embodiment one movable contact spring of the present invention when primary importance;
Fig. 6 is the structural representation of the contact system of embodiment one movable contact spring of the present invention when the second place;
Fig. 7 is the structural representation of the contact system of embodiment one movable contact spring of the present invention in motion process;
Fig. 8 is suction of the present invention, counter-force sketch map;
Fig. 9 is the structural representation of the contact system of embodiment two movable contact springs of the present invention when primary importance;
Figure 10 is the structural representation of the contact system of embodiment two movable contact springs of the present invention when the second place;
Figure 11 is the structural representation of the contact system of embodiment two movable contact springs of the present invention in motion process;
Figure 12 is the structural representation of the contact system of embodiment three movable contact springs of the present invention when primary importance;
Figure 13 is the structural representation of embodiment four a kind of electromagnetic relays of the present invention;
Figure 14 is the structural representation of a kind of electromagnetic relay of embodiment four movable contact springs of the present invention when primary importance;
Figure 15 is the structural representation of a kind of electromagnetic relay of embodiment four movable contact springs of the present invention when the second place;
Figure 16 is the structural representation of a kind of electromagnetic relay of embodiment four movable contact springs of the present invention in motion process.
Embodiment
Embodiment one, and to shown in Figure 8, the contact system of a kind of electromagnetic relay of the present invention comprises referring to Fig. 5: contain the moving spring part 6 of movable contact spring 60 and moving contact 61, contain the quiet spring part 7 of quiet spring 70 and fixed contact 71, stop 5 and impeller 31; Moving spring part 6, quiet spring part 7, stop 5 and impeller 31 are located at the position of matching respectively; Make that when impeller 31 actions movable contact spring 60 is thrown off by moving spring part and the contacted primary importance of stop and contacted and be flapped toward and move spring partly and the contacted second place of quiet spring part; Between movable contact spring 60 and stop 5, also establish tongue 62, make movable contact spring 60 also contact with stop 5 through tongue 62 in said primary importance with the elastic force of presetting; When impeller 31 begins to move and when making that said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, said movable contact spring 60 postpones disengagement through tongue with contacting of stop.
Wherein, an end of said tongue 62 is connected with movable contact spring 60, and movable contact spring 60 is when primary importance, and the other end of tongue 62 is elastically against on the said stop 5; Said tongue 62 is structure as a whole with movable contact spring 60; Certainly, tongue also can be part independently, fixes through connection.
As shown in Figure 5, when impeller 31 did not promote movable contact spring 60, movable contact spring 60 was in primary importance, and this moment, moving spring part 6 contacted with stop 5, and tongue 62 also contacts with stop 5; As shown in Figure 6, after impeller 31 promoted movable contact spring 60, movable contact spring 60 moved to the second place, and this moment, moving spring part 6 did not contact with stop 5, and tongue 62 does not contact with stop 5 yet, and moving contact 61 contacts with fixed contact 71; As shown in Figure 7, movable contact spring 60 is in motion process, and when movable contact spring 60 or moving contact 61 are separated from stop 5, and tongue 62 also contacts with stop 5, and promptly movable contact spring 60 postpones disengagement through tongue 62 with contacting of stop 5.
Referring to shown in Figure 8, curve M 1 is " suction under the operation voltage ", and curve M 2 is " suction under the release voltage ", and curve S 1 is " counter-force ", and curve N 1 is " suction behind the adjustment tongue under the operation voltage ", and curve R1 is " counter-force behind the adjustment tongue ".Reducing operation voltage can realize through adding the power that large armature tensioning spring 62 is pressed on the stop 5; To become shown in single-point line among Fig. 8 " counter-force behind the adjustment tongue " in the local counter-force that measurement point obtains; Counter-force is many two flex point e points and f point, and moving spring part 6 rigidly connects the b point that touches with stop 5 and does not have variation basically in the reality, when relay will move at this moment; Only need suction to reach like double dot dash line among Fig. 8 " suction behind the adjustment tongue under the operation voltage ", promptly suction surpasses the f point; This adjustment does not have influence basically to other part of counter-force curve; Therefore do not influence release voltage, and to " promotion stroke " not influence basically, promptly c point position is constant basically; Also having does not have influence basically to contact gap, and promptly the distance between a point and b point is constant.Reduce or the rising operation voltage, only need the size of adjustment tongue 62 and 5 power of stop to realize.
Embodiment two, and is extremely shown in Figure 11 referring to Fig. 9, the contact system of a kind of electromagnetic relay of the present invention; Be with the difference of embodiment one; One end of said tongue 62 is connected with stop 5, and movable contact spring 60 is when primary importance, and the other end of tongue 62 is elastically against on the said movable contact spring 60.
Wherein, said tongue 62 is part independently, and an end of tongue 62 is connected with stop 5 and fixes; Certainly, tongue also can be designed to be structure as a whole with stop, lets an end of tongue be connected with the stop one.
As shown in Figure 9, when impeller 31 did not promote movable contact spring 60, movable contact spring 60 was in primary importance, and this moment, moving spring part 6 contacted with stop 5, and tongue 62 contacts with movable contact spring 60; Shown in figure 10, after impeller 31 promoted movable contact spring 60, movable contact spring 60 moved to the second place, and this moment, moving spring part 6 did not contact with stop 5, and tongue 62 does not contact with movable contact spring 60 yet, and moving contact 61 contacts with fixed contact 71.Shown in figure 11; Movable contact spring 60 is in motion process, and when movable contact spring 60 or moving contact 61 leave stop 5, and tongue 62 also contacts with movable contact spring 60; Because tongue 62 is fixed on the stop 5, is equivalent to movable contact spring 60 and postpones to throw off with contacting of stop 5 through tongue 62.
Embodiment three, and referring to shown in Figure 12, the contact system of a kind of electromagnetic relay of the present invention is with the difference of embodiment one, and stop 5 is made up of with another fixed contact 51 another quiet spring 50.
Embodiment four, and to shown in Figure 16, a kind of electromagnetic relay of the present invention comprises magnetic circuit part, contact system, base 8 and shell 9 referring to Figure 13; Said magnetic circuit part, said contact system are contained in respectively on the base 8; Said magnetic circuit partly comprises yoke 4, iron core 1 and coil 2; Said contact system comprises: contain the moving spring part 6 of movable contact spring 60 and moving contact 61, contain the quiet spring part 7 of quiet spring 70 and fixed contact 71, stop 5 and impeller; Said impeller is an armature 3, and partly matches with magnetic circuit; Said moving spring part, quiet spring part, stop 5 and armature 3 are located at the position of matching respectively; Make when coil 2 energisings and armature 3 when inhaling that movable contact spring 60 is thrown off by moving spring part and the contacted primary importance of stop and contacted and be flapped toward and move spring partly and the contacted second place of quiet spring part to iron core 1; Between movable contact spring 60 and stop 5, also establish the tongue 62 with the elastic force of presetting, these tongue 62 one are connected on the movable contact spring 60, make movable contact spring 60 also contact with stop 5 through tongue 62 in said primary importance; When armature 3 suctions make that to iron core said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, the tongue 62 that said movable contact spring one connects postpones disengagement with contacting of stop.
The foregoing description only is used for further specifying the contact system and the electromagnetic relay thereof of a kind of electromagnetic relay of the present invention; But the present invention is not limited to embodiment; Every foundation technical spirit of the present invention all falls in the protection range of technical scheme of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (11)
1. the contact system of an electromagnetic relay comprises: contain the moving spring part of movable contact spring and moving contact, contain the quiet spring part of quiet spring and fixed contact, stop and impeller; Moving spring part, quiet spring part, stop and impeller are located at the position of matching respectively; Make that when impeller move movable contact spring is contacted by moving spring part and the contacted primary importance disengagement of stop and is flapped toward and moves spring partly and the contacted second place of quiet spring part; It is characterized in that: between movable contact spring and stop, also establish tongue, make movable contact spring also contact with stop through tongue in said primary importance with the elastic force of presetting; When impeller begins to move and when making that said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, said movable contact spring postpones disengagement through tongue with contacting of stop.
2. the contact system of electromagnetic relay according to claim 1, it is characterized in that: an end of said tongue is connected with movable contact spring, and movable contact spring is when primary importance, and the other end of tongue is elastically against on the said stop.
3. the contact system of electromagnetic relay according to claim 2 is characterized in that: said tongue is part independently, and an end of tongue is connected with movable contact spring and fixes; Or said tongue and movable contact spring are structure as a whole, and an end of tongue is connected with the movable contact spring one.
4. the contact system of electromagnetic relay according to claim 1, it is characterized in that: an end of said tongue is connected with stop, and movable contact spring is when primary importance, and the other end of tongue is elastically against on the said movable contact spring.
5. the contact system of electromagnetic relay according to claim 4 is characterized in that: said tongue is part independently, and an end of tongue is connected with stop and fixes; Or said tongue and stop are structure as a whole, and an end of tongue is connected with the stop one.
6. the contact system of electromagnetic relay according to claim 1 is characterized in that: said moving contact is part independently, and moving contact is fixed on the movable contact spring.
7. the contact system of electromagnetic relay according to claim 1, it is characterized in that: said moving contact and movable contact spring are structure as a whole, and said moving contact shapes on movable contact spring.
8. the contact system of electromagnetic relay according to claim 1 is characterized in that: said fixed contact is part independently, and fixed contact is fixed on the quiet spring.
9. the contact system of electromagnetic relay according to claim 1, it is characterized in that: said fixed contact and quiet spring are structure as a whole, and said stationary contact shapes on quiet spring.
10. the contact system of electromagnetic relay according to claim 1, it is characterized in that: said stop is the quiet spring part that contains quiet spring and fixed contact.
11. an electromagnetic relay comprises magnetic circuit part, contact system, base and shell; Said magnetic circuit part, said contact system are contained on the base respectively; Said magnetic circuit partly comprises yoke, iron core and coil; Said contact system comprises: contain the moving spring part of movable contact spring and moving contact, contain the quiet spring part of quiet spring and fixed contact, stop and impeller; Said impeller is an armature, and partly matches with magnetic circuit; Said moving spring part, quiet spring part, stop and armature are located at the position of matching respectively; Make when coil electricity and armature when inhaling that movable contact spring is thrown off by moving spring part and the contacted primary importance of stop and contacted and be flapped toward and move spring partly and the contacted second place of quiet spring part to iron core; It is characterized in that: between movable contact spring and stop, also establish the tongue with the elastic force of presetting, this tongue one is connected on the movable contact spring, makes movable contact spring also contact with stop through tongue in said primary importance; When the armature suction makes that to iron core said moving spring part is thrown off with contacting of stop, the effect of being preset elastic force, the tongue that said movable contact spring one connects postpones disengagement with contacting of stop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254998.9A CN102800532B (en) | 2012-07-20 | 2012-07-20 | A kind of contact system of electromagnetic relay and electromagnetic relay thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254998.9A CN102800532B (en) | 2012-07-20 | 2012-07-20 | A kind of contact system of electromagnetic relay and electromagnetic relay thereof |
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| Publication Number | Publication Date |
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| CN102800532A true CN102800532A (en) | 2012-11-28 |
| CN102800532B CN102800532B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210254998.9A Active CN102800532B (en) | 2012-07-20 | 2012-07-20 | A kind of contact system of electromagnetic relay and electromagnetic relay thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108417451A (en) * | 2018-04-25 | 2018-08-17 | 厦门宏发电声股份有限公司 | A kind of ac/dc universal relay of forced guiding |
| CN108962686A (en) * | 2018-08-08 | 2018-12-07 | 漳州宏发电声有限公司 | A kind of electromagnetic relay for dual power supply switching |
| CN109036972A (en) * | 2018-08-10 | 2018-12-18 | 厦门宏发信号电子有限公司 | A kind of outer quiet spring structure being easy to adjust overtravel |
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| CN202855652U (en) * | 2012-07-20 | 2013-04-03 | 厦门宏发电声股份有限公司 | Contact system of electromagnetic relay and electromagnetic relay thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108417451A (en) * | 2018-04-25 | 2018-08-17 | 厦门宏发电声股份有限公司 | A kind of ac/dc universal relay of forced guiding |
| CN108417451B (en) * | 2018-04-25 | 2024-01-02 | 厦门宏发电声股份有限公司 | Forced-guiding AC/DC universal relay |
| CN108962686A (en) * | 2018-08-08 | 2018-12-07 | 漳州宏发电声有限公司 | A kind of electromagnetic relay for dual power supply switching |
| CN109036972A (en) * | 2018-08-10 | 2018-12-18 | 厦门宏发信号电子有限公司 | A kind of outer quiet spring structure being easy to adjust overtravel |
| CN109036972B (en) * | 2018-08-10 | 2023-06-30 | 厦门宏发信号电子有限公司 | Outer quiet spring structure of easy adjustment overstroke |
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| Publication number | Publication date |
|---|---|
| CN102800532B (en) | 2015-07-29 |
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