CN85102776B - Three-position electromagnetic relay - Google Patents
Three-position electromagnetic relay Download PDFInfo
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- CN85102776B CN85102776B CN85102776A CN85102776A CN85102776B CN 85102776 B CN85102776 B CN 85102776B CN 85102776 A CN85102776 A CN 85102776A CN 85102776 A CN85102776 A CN 85102776A CN 85102776 B CN85102776 B CN 85102776B
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- support
- output shaft
- electromagnetic relay
- position electromagnetic
- armature
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Abstract
The present invention relates to a three-position electromagnetic relay driven by a three-position electromagnetic actuating mechanism with two electromagnetic coils. When the two coils are respectively energized or the two coils are not energized, an armature iron has three working positions. A bracket provided with a driving contact also obtains three positions which are different by the linkage of an output shaft and the armature iron. The bracket is provided with a bulge with a continuous change curved surface, and the bracket enables the contact groups to generate six working states which are different by the functions of a spring, a steel ball and a push rod of a movable contact for an installing pair. The three-position electromagnetic relay can be made into a single-breaking type and a double-breakpoint type, and can replace two two-position relays. The three-position electromagnetic relay has the advantages of compact structure, complete function, low cost, etc., and can be universally applied to automatic control and electric drive systems.
Description
The present invention relates to 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 common 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 iron 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, so two groups of main contact open and-shut modes just have corresponding three kinds, played two not effects of two relays of energising simultaneously, the 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.Pay support for one and drive moving linearly by output shaft, pay on the support and have more than one projection, 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, two contactors of reversing starter, the original usefulness of auto-transformer starter just can have been replaced 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, 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, one 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) are 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, and armature (6) slides in the space that yoke limited, and 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 between two magnetic poles respectively
FirstAnd G
SecondAs A-wire circle (12) energising, air gap G
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), and 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, be subjected to the effect of back-moving spring (26) to be pressed towards support (20) all the time, support (20) has inclined plane shape projection (20a, 20b, 20c, 20d) with these push rod contact positions, drives above-mentioned push rod by these projections when support (20) is mobile and moves up and down in housing bore.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, can see the following form.
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.The first and second active contacts of being adorned by touch spring (37) and pressing plate (38) with nut (36) by conducting bolt (35) (31,34) are arranged on the support (30), and terminal block (39) is linked to each other with active contact (31,34) 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.* when second coil (11) is switched on, output shaft (13) moves to right, driving support (30) rotates counterclockwise, second sets of contacts (33,34) closure is when two coils all cut off the power supply, output shaft (13) is at main spring (9,8) effect recovers the centre position down, 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 states 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 (11)
1, a kind of three-position electromagnetic relay comprises housing [1], contains the sets of contacts of fixed contact and moving contact, movable support [20,30]; The electromagnetic actuator of driving arm [50], the electromagnetic actuator of described 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], and being 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, armature [6] slides in the space that yoke [5] is limited, there are two springs [9,8] both sides of armature [6], at ordinary times when two coils [12] [11] when all cutting off the power supply, above-mentioned two springs [9,8] armature [6] is positioned at the centre position, and when two coils were switched on separately, armature [6] was inhaled respectively to iron core; Output shaft [13] is fixed on the armature [6]; 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; Its feature comprises:
A. the yoke [5] in the described electromagnetic actuator [50] is made for soft magnetic material entirely;
B. described two springs [9,8] are configured between armature 6 and two iron cores [10,7];
C. with have can be respectively and the moving contact of two groups of fixed contact closures on the described support [20,30] that described output shaft 13 connects.
2, three-position electromagnetic relay as claimed in claim 1, the support [20] that it is characterized in that installing moving contact is solidly installed with output shaft [13], with output shaft [13] moving linearly.
3, three-position electromagnetic relay as claimed in claim 1, the support [30] that it is characterized in that installing moving contact is driven by transmission mechanism by output shaft [13].
4, three-position electromagnetic relay as claimed in claim 3 is characterized in that installing and has sector gear on the support [30] of moving contact and be meshed with the tooth bar of output shaft interlock.
5, as claim 3 or 4 described three-position electromagnetic relays, it is characterized in that also comprising with output shaft connects together moving linearly and pay support [42], pay on the support and have a plurality of projections, 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, the support [20] that it is characterized in that installing moving contact has a plurality of projections, 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 is characterized in that 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 is characterized in that 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 CN85102776A (en) | 1986-09-10 |
| CN85102776B true 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 (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103201813A (en) * | 2010-11-01 | 2013-07-10 | 日本特殊陶业株式会社 | Relay |
Families Citing this family (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 |
| CN105529130B (en) * | 2016-01-29 | 2018-09-04 | 德力西电气有限公司 | A kind of electromagnet structure |
-
1985
- 1985-04-01 CN CN85102776A patent/CN85102776B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103201813A (en) * | 2010-11-01 | 2013-07-10 | 日本特殊陶业株式会社 | Relay |
Also Published As
| Publication number | Publication date |
|---|---|
| CN85102776A (en) | 1986-09-10 |
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