CN85102776A - Three-position electromagnetic relay - Google Patents
Three-position electromagnetic relay Download PDFInfo
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- CN85102776A CN85102776A CN 85102776 CN85102776A CN85102776A CN 85102776 A CN85102776 A CN 85102776A CN 85102776 CN85102776 CN 85102776 CN 85102776 A CN85102776 A CN 85102776A CN 85102776 A CN85102776 A CN 85102776A
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- electromagnetic relay
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Abstract
A kind of three-position electromagnetic relay is driven by the three-position solenoid actuator that has two solenoids.When two coils when separately energising and two coils are not all switched on armature three service positions are arranged.Installing initiatively, the support of contact links with armature by output shaft thereby also obtains three different positions.The projection that connects the variation curved surface that continues is arranged on the support, and it can make these sets of contacts produce six kinds of different operating states by the push rod effect of the secondary moving contact of spring, steel ball and installation.Advantages such as three-position electromagnetic relay can be made single-break and double break point pattern, can replace two two relays, has compact conformation, and is multiple functional, with low cost can be widely used in automatic control and the electric drive system.
Description
The present invention and a kind of three-position electromagnetic relay.
As everyone knows, three adjustings are modes of using always in automatic control system, and for example temperature controlled heating-stop-cooling off heats up-be incubated-stop or the like.In electric drive system, also often carry out three controls.The for example just commentaries on classics of motor-stop-reversing is started-turn round-stop or the like.All adopted two two general relays to unite in these systems controls in the past.Use two obvious volumes of relay big.Connect up many and the cost height.
Purpose of the present invention provides a kind of three-position electromagnetic relay to replace two two relays in order to overcome above-mentioned shortcoming exactly.The present invention utilizes three-position solenoid actuator to drive each main pair cut-offfing with closure of contact and goes to achieve the above object.Three-position solenoid actuator comprises the shell of magnetic conduction, a yoke is being adorned at the shell middle part regularly, first and second liang of cores link to each other with the shell two ends, first and second liang of coils are arranged between first and second liang of iron cores and the yoke coaxially, and two iron cores stretch into and form two magnetic poles in the coil, and armature directly slides between two magnetic poles in the space that yoke limited, there are two springs the both sides of armature, during two coil blackouts, two springs are positioned at the centre position with armature, form two working gas gaps respectively with two magnetic poles at ordinary times.Armature is attracted to the first iron core during energising of A-wire circle.During the second coil electricity, armature is attracted to the second iron core.Output shaft is fixed on the armature, allows output shaft go to drive two groups of initiatively supports of contact are housed, and makes two groups of initiatively contacts and the two group master fixed contact closed and disconnecteds motionless with respect to housing.Because the output shaft of three-position solenoid actuator has three different positions,, two not effects of two relays of energising have simultaneously been played so two groups of main contact open and-shut modes just have corresponding three kinds.Main contact among the present invention cut-off that pattern can make single-break also can make double break point.
Of the present invention pair of contact can have six kinds at the open and-shut mode of three diverse locations, and it is to realize like this.One pair of support is paid by output shaft drive moving linearly and is had more than one projection on the support, the one or both sides of projection have the continually varying appearance profile, this projection contacts with the push rod that has ball and spring when paying the support motion, and the drive push rod moves and makes pair moving contact that is contained on the push rod with fixed contact cut-offs or closure with respect to motionless the paying of housing.
Advantage of the present invention is a compact conformation, and part is few, and volume is little, and most of part and two relays are general, low cost of manufacture.Pay contact owing to have the master of six kinds of different open and-shut modes, multiple functional, applying flexible.Replace two two relays can reduce external cabling, reduced volume, cost saving with a three-position electromagnetic relay.
Three-position electromagnetic relay can be used in control automatically and the electric drive system.For example, reversing starter, just can replace from two contactors of the original usefulness of even reduced-voltage starter by one three contactor.
Be described further below in conjunction with embodiment and accompanying drawing thereof.
Fig. 1～Fig. 3 is the structural principle schematic diagram of first embodiment.
State when Fig. 1 is the equal no power of two coils.
State when Fig. 2 is the second coil electricity.
State when Fig. 3 is the energising of A-wire circle.
Fig. 4 is the structural principle schematic diagram of second embodiment.
Referring to Fig. 1, first embodiment is the three-position electromagnetic relay that directly moves the double-breakpoint structure form, and three-position solenoid actuator (50) is packed in the housing (1) of insulating material making.All there is buffer element at the two ends of actuator, and an end heads on buffer plate (3) and base plate (2), and base plate (2) is screwed on housing (1).The other end heads on four cushion pad posts (21), and the other end of these four cushion pad posts (21) is filled in the pit of inside four cylindrical bosses (1a) given prominence to of housing (1).The structure of three-position solenoid actuator and operating principle are such.A yoke (5) is being fixed at the middle part of shell (4), two ends are fixed with first and second liang of iron cores (10,7), first and second liang of coils (12,11) be contained in first and second liang of iron cores (10 respectively, 7) and between the yoke (5), two iron cores stretch into and form two magnetic poles in two coils, armature (6) slides in the space that yoke limited, between first and second liang of iron cores and the armature first and second liang of springs (9 are arranged respectively, 8), they are positioned at armature (6) and form two working gas gap G first and G second coil A-wire circle (12) energising, air gap G between two magnetic poles respectively
FirstDwindle, armature is attracted to first iron core (10).When second coil (11) is switched on, air gap G
SecondDwindle, armature is attracted to second iron core (7).When the equal no power of two coils, armature is reset at the centre position by two springs (8,9).Output shaft (13) is fixed on armature (6) thereby goes up and also obtains three diverse locations.
The support (20) that insulating material is made is solidly installed with pin (14) and output shaft (13).Support (20) is cup-shaped, has on its bottom surface that four cylindrical boss (1a) survive movingly in four circular holes and the housing, thereby support can only be done to move axially and can not rotate with output shaft.Arranging the first and second active contacts (18,17) before and after support (20) is gone up, these contacts are being pressed by touch spring (19).Go up the relevant position at housing (1) and fixing first and second liang of group main fixed contacts (16,15).When two coils all cut off the power supply, support (20) mediated, and two groups of main contacts all disconnect.When A-wire circle (12) was switched on, support moved to left, first main contact group (18,16) closure.And when second coil (11) was switched on, support (20) moved to right, second main contact group (17,15) closure.
Except main contact, pair contact of a, b, c, four groups of different conditions of d is distributed in the both sides of relay in addition.Pay fixed contact 22a and be fixed on the side of housing, and pay fixed contact 22b, 22c, 22d is packed on two side cover plates (28) of relay, side cover plate (28) is screwed on housing (1).Paying moving contact 23a, 23b, 23c, 23d for four groups is contained in respectively on four push rod 27a, 27b, 27c, the 27d, these push rods can slide in the hole of housing, the effect that is subjected to back-moving spring (26) is with being pressed towards support (20) all the time, there is the place, inclined-plane support (20) and these push rod contact positions with projection (20a, 20b, 20c, 20d), prominently drive above-mentioned push rod by these projections and move up and down in housing bore by these when support (20) is mobile.Above-mentioned push rod and support (20) contact jaw is equipped with little spring (25) and steel ball (24), so resistance is very little when support (20) drives the motion of these push rods.The shape of projection 20a, 20b, 20c, 20d is incomplete same everywhere on the support (20), has plenty of one-sided inclined-plane, has plenty of double-sided bevel, determines at three position open and-shut modes according to paying contact.
Six groups of masters of first embodiment pay the open and-shut mode of contact, but See Figure.
The position of last table " in " can contrast Fig. 1, position " right side " can contrast Fig. 2, and position " left side " can contrast Fig. 3.
Referring to Fig. 4, the three-position electromagnetic relay of second embodiment is to rotate the double-breakpoint structure pattern, and comparing with first embodiment only is that contact system is different with the kind of drive, is described as follows with regard to difference below.
Installing initiatively, the support (30) of contact can rotate around the axle (41) that is contained on the housing (1), have sector gear (30a) on the support (30) with rotation axis (41) coaxial line, the front portion of output shaft (13) is processed with tooth bar (13a) and sector gear (30a) engagement, output shaft (13) can drive sector gear (30a) and rotate when mobile, also just driven support (30) and rotated.Have on the support (30) by conducting bolt (35) with nut (36) by touch spring (37) and pressing plate (38) adorning first and second contacts (31,34) initiatively, terminal block (39) is linked to each other with contact (31,34) initiatively by the line that is flexible coupling (40).Adorning the first and second two main fixed contacts (32,33) regularly in the corresponding position of housing (1).During two coil blackouts, first and second liang of group main contacts all disconnect at ordinary times.When A-wire circle (12) was switched on, output shaft (13) moved to left, and drove support (30) and clockwise rotated first sets of contacts (31,32) closure.And when second coil (11) was switched on, output shaft (13) moved to right, and drove support (30) and rotated counterclockwise second sets of contacts (33,34) closure.When two coils all cut off the power supply, output shaft (13) recovered the centre position down in the effect of main spring (9,8), and support (30) also recovers the centre position, and two groups of contacts all disconnect again.
The support of contact initiatively is installed among first embodiment and drive pay moving contact pay support because all so moving linearly just has been integrated.The support (30) of contact rotates and install initiatively among second embodiment, and drive pay moving contact pay still moving linearly of support, so must be separately.Paying support (42) is fixed together with pin (14) and output shaft, it is the same with first embodiment that it drives the mode of paying moving contact, paying on the support (42) has the different projection of six place's profiles, promotes six and has the push rod motion of paying moving contact, thereby obtain six kinds of different operating states.These six kinds of work can see the following form.
By in the table as can be known the operating state of contact e and second, f and first be the same, but structure of contact terminal is different.Two kinds of contacts satisfy the needs of different drop-out currents.
Present embodiment is to allow support rotate with the tooth bar transmission, apparently, also can move along a curved path by support with alternate manners such as lever transmissions, reaches same purpose.
More than in two examples, the main contact of paying all can be made several rows as required, the kind class and the quantity of paying contact also are provided with as required.
More than two examples all can mix arc quenching system as required and make various three contactors.
Claims (8)
1, a kind of three-position electromagnetic relay comprises the fixed contact that housing [1] is motionless with respect to housing, movable support [20,30], and with the moving contact that the motion of support is moved, the electromagnetic actuator of driving arm [50].The electromagnetic actuator that it is characterized in that driving usefulness comprises the shell [4] of magnetic conduction, shell [4] middle part is installing a yoke [5], first, second two coils [12,11] be arranged in coaxially in the shell [4], be contained in the both sides of yoke [5], two iron cores [10,7] link to each other with the two ends of shell [4] respectively and stretch into the inside of first and second coils [12] [11], armature [6] directly slides in the space that yoke [5] is limited, and there are two springs [9,8] at the two ends of armature [6].When two coils [12] [11] cut off the power supply, two springs [9,8] were positioned at the centre position with armature [6] at ordinary times, formed two magnetic air gap [G respectively with two iron cores [10,7]
First, G
Second].A-wire circle [12] energising, armature [6] is attracted to first iron core [10].And second coil [11] when energising, armature [6] is attracted to second iron core [7].Output shaft [13] is fixed on the armature [6], and support [20,30] also obtains three diverse locations with the motion of output shaft [13], thereby makes above-mentioned sets of contacts closed and disconnected.
2, three-position electromagnetic relay as claimed in claim 1 is characterized in that the support (20) that the active contact is installed is solidly installed with output shaft (13), with output shaft (13) moving linearly.
3, three-position electromagnetic relay as claimed in claim 1, its support (30) that active contact is installed is driven by transmission mechanism by output shaft (13).
4, three-position electromagnetic relay as claimed in claim 3 has sector gear and is meshed with the tooth bar of output shaft interlock on the support (30) of its installation active contact.
5, as claim 3 or 4 described three-position electromagnetic relays, also comprise with output shaft connects together moving linearly and pay support (42), pay on the support and have a projection at least, it is continually varying curved surfaces that the exterior contour of above-mentioned projection has one or both sides, this projection acts on mutually with the push rod (27) that is connected with pair moving contact, push rod is moved in the space that housing limited, pay sets of contacts disconnection and closed thereby make.
6, three-position electromagnetic relay as claimed in claim 2, it installs initiatively, and the support (20) of contact has a projection at least, it is continually varying curved surfaces that the exterior contour of above-mentioned projection has one or both sides, this projection acts on mutually with the push rod (27) that is connected with pair contact push rod is moved in the space that housing limited, and pays sets of contacts disconnection and closed thereby make.
7, three-position electromagnetic relay as claimed in claim 5, push rod is equipped with ball and spring, and moves on the surface of above-mentioned projection by ball.
8, three-position electromagnetic relay as claimed in claim 6, push rod is equipped with ball and spring, and moves on the surface of above-mentioned projection by ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102776A CN85102776B (en) | 1985-04-01 | 1985-04-01 | Three-position electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85102776A CN85102776B (en) | 1985-04-01 | 1985-04-01 | Three-position electromagnetic relay |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85102776A true CN85102776A (en) | 1986-09-10 |
| CN85102776B CN85102776B (en) | 1988-06-08 |
Family
ID=4792750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85102776A Expired CN85102776B (en) | 1985-04-01 | 1985-04-01 | Three-position electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85102776B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198981A (en) * | 2013-03-18 | 2013-07-10 | 贵州锐动科技有限公司 | Magnetic holding electromagnetic switch element capable of resisting outside magnetic interference |
| CN105529130A (en) * | 2016-01-29 | 2016-04-27 | 德力西电气有限公司 | Electromagnet structure |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012060090A1 (en) * | 2010-11-01 | 2012-05-10 | 日本特殊陶業株式会社 | Relay |
-
1985
- 1985-04-01 CN CN85102776A patent/CN85102776B/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103198981A (en) * | 2013-03-18 | 2013-07-10 | 贵州锐动科技有限公司 | Magnetic holding electromagnetic switch element capable of resisting outside magnetic interference |
| CN105529130A (en) * | 2016-01-29 | 2016-04-27 | 德力西电气有限公司 | Electromagnet structure |
| CN105529130B (en) * | 2016-01-29 | 2018-09-04 | 德力西电气有限公司 | A kind of electromagnet structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102776B (en) | 1988-06-08 |
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