CN113314385A - Electromagnetic structure of permanent magnet-containing balanced armature relay - Google Patents
Electromagnetic structure of permanent magnet-containing balanced armature relay Download PDFInfo
- Publication number
- CN113314385A CN113314385A CN202110673318.6A CN202110673318A CN113314385A CN 113314385 A CN113314385 A CN 113314385A CN 202110673318 A CN202110673318 A CN 202110673318A CN 113314385 A CN113314385 A CN 113314385A
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- armature
- magnetic
- iron
- relay
- coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H51/00—Electromagnetic relays
- H01H51/01—Relays in which the armature is maintained in one position by a permanent magnet and freed by energisation of a coil producing an opposing magnetic field
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/163—Details concerning air-gaps, e.g. anti-remanence, damping, anti-corrosion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/24—Parts rotatable or rockable outside coil
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/18—Movable parts of magnetic circuits, e.g. armature
- H01H50/30—Mechanical arrangements for preventing or damping vibration or shock, e.g. by balancing of armature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/16—Magnetic circuit arrangements
- H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
Abstract
The utility model provides a contain balanced armature formula relay electromagnetic structure of permanent magnetism, belongs to relay technical field, one side of upper and lower yoke is arranged in to armature, armature middle part is supported on the frame through the pivot rotation, the armature both ends open and shut the setting with upper yoke and lower yoke respectively, the magnet steel sets up on lower yoke, links to each other through the middle part of magnetic conduction spare and armature, the magnet steel is close with the armature that is close to lower yoke one end. The invention can effectively utilize the magnetic flux generated by the magnetic steel, avoid magnetic flux leakage waste, improve the magnetic circuit efficiency, reduce the relay power, increase the environmental resistance of the relay, and solve the problems of low release holding power, poor vibration and impact resistance, high relay power consumption and the like of the conventional relay.
Description
Technical Field
The invention belongs to the technical field of relays, and particularly relates to an electromagnetic structure of a relay with a permanent magnet balanced armature.
Background
The relay is composed of an electromagnetic system and a contact spring system, wherein the electromagnetic system is an input part of the relay and receives external voltage or current excitation so as to drive the relay to move integrally; the contact spring system is a relay output part and controls the on-off of signals at two ends of a contact through the on-off of the contact. At present, the existing miniature relay can be divided into a relay without a permanent magnet and a relay with a permanent magnet, and is mainly embodied whether an electromagnetic system contains magnetic steel or not.
The internal magnetic circuit of the electromagnetic system without the permanent magnet relay is completely formed by a magnetic field generated by external excitation, and the action energy of the electromagnetic system is completely provided by the external excitation, so that the required power consumption is larger.
The internal magnetic circuit of the electromagnetic system of the relay containing the permanent magnet is composed of a permanent magnetic field generated by the self magnetic steel and a magnetic field generated by external excitation, and the permanent magnetic field generated by the self magnetic steel is matched with the external excitation magnetic field, so that the purpose of reducing the external power consumption required by the action of the relay is achieved. However, most of the existing relays containing permanent magnets are matched with an external excitation magnetic field by means of a leakage magnetic field of the magnetic steel, so that the use efficiency of the magnetic steel is greatly reduced, the magnetic performance of the magnetic steel cannot be fully utilized, the holding force of the armature is insufficient in a release state, and the vibration and impact resistance is relatively weak.
Disclosure of Invention
Based on the technical problem, the invention provides the electromagnetic structure of the relay with the permanent magnet balanced armature, which improves the environmental resistance and the service life of the relay while reducing the size of the relay, reduces the power consumption of the relay, increases the release voltage and improves the debugging efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a contain balanced armature relay electromagnetic structure of permanent magnetism, includes upper yoke, lower yoke, coil assembly, iron core, coil former, coil, armature, magnet steel, be equipped with the coil on the coil former, the iron core sets up to constitute coil assembly in the coil, coil assembly places between upper yoke and lower yoke, one side of upper and lower yoke is arranged in to armature, the armature middle part is supported on an outer frame through the pivot rotation, the armature both ends open and shut the setting with upper yoke and lower yoke respectively, the magnet steel sets up on lower yoke, links to each other through the middle part of magnetic conduction spare and armature, the magnet steel is close with the armature that is close to yoke one end down.
Furthermore, the magnetic conduction piece is of a frame structure, the two sides of the upper end of the magnetic conduction piece are provided with magnetic conduction piece connecting ends protruding outwards, the magnetic steel is arranged on the magnetic conduction piece, and the magnetic conduction piece connecting ends are connected with the two sides of the armature above the middle rotating shaft.
Furthermore, on the frame structure of the magnetic conduction piece, an accommodating groove for accommodating the rotating shaft in the middle of the armature is arranged below the connecting end of the magnetic conduction piece.
Furthermore, the bottom of the magnetic conduction piece is in contact with the lower yoke, and the top of the magnetic conduction piece is away from the upper yoke.
Furthermore, two sides of the end parts of the upper yoke iron, the lower yoke iron and the magnetic conduction piece are respectively provided with a connecting boss protruding outwards, and the outer frame is provided with a clamping groove matched with the connecting boss and the rotating shaft in the middle of the armature so as to limit the upper yoke iron, the lower yoke iron, the magnetic conduction piece and the rotating shaft in the middle of the armature.
Further, the upper yoke iron, the lower yoke iron and the coil group are insulated by coil frames.
Furthermore, an armature frame is injected outside the armature, a contact spring connecting end connected with a contact spring of the outer frame is arranged at the top of the armature frame, armature middle rotating shafts protruding outwards are arranged on two sides of the middle of the armature frame, and the wall thickness of the armature frame can be passed by a magnetic circuit.
Furthermore, the magnetic steel and the lower portion of the armature form a first magnetic flux loop, the upper yoke, the iron core, the lower yoke, the magnetic steel and the upper portion of the armature form a second magnetic flux loop, the first magnetic flux loop and the second magnetic flux loop are opposite in direction, after the coil is electrified, the upper yoke, the iron core, the lower yoke and the lower portion of the armature are connected to the upper portion to form a coil magnetic flux loop, and the coil magnetic flux loop is opposite to the first magnetic flux loop in direction and the same as the second magnetic flux loop in direction.
The invention has the advantages and beneficial effects that:
the invention provides a relay with a permanent magnet balanced armature, wherein the shapes and the fixed structures of magnetic steel and a magnetic conduction piece can effectively utilize magnetic flux generated by the magnetic steel, thereby avoiding magnetic flux leakage waste, improving the magnetic circuit efficiency, reducing the relay power, increasing the environmental resistance of the relay, and solving the problems of low release holding power, poor vibration and impact resistance, high relay power consumption and the like of the conventional relay.
Drawings
FIG. 1 is a three-dimensional schematic diagram of an electromagnetic structure of the present invention;
FIG. 2 is a schematic view of the outer frame structure;
FIG. 3 is a schematic diagram of a coil assembly;
FIG. 4 is a schematic view of an armature assembly;
FIG. 5 is a schematic structural diagram of a magnetic steel set;
FIG. 6 is a schematic view of the release position when not energized;
FIG. 7 is a schematic diagram of the initial phase of coil energization when the armature and lower yoke are not yet released;
FIG. 8 is a schematic diagram of the armature and the upper yoke not yet released during an initial phase of a coil de-energizing;
fig. 9 is a diagram showing the reaction force of the relay.
The components in the figure: 1 is upper yoke iron, 2 is lower yoke iron, 3 is coil group, 4 is armature group, 5 is magnetic steel group, 6 is outer frame, 7 is iron core, 8 is coil former, 9 is coil, 10 is armature, 11 is armature frame, 12 is magnetic steel, 13 is magnetic conductive piece, 14 is magnetic steel frame, 15 is magnetic conductive piece connecting end, 16 is holding tank, 17 is contact spring connecting end.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
An electromagnetic structure of a relay with a permanent magnet balanced armature comprises an upper yoke iron 1, a lower yoke iron 2, a coil group 3, an iron core 7, a coil rack 8, a coil 9, an armature 10 and magnetic steel 12, the coil 9 is arranged on the coil rack 8, the iron core 7 is arranged in the coil 9 on the coil rack 8 to form a coil group 3, the coil group 3 is arranged between the upper yoke iron 1 and the lower yoke iron 2, the armature 10 is arranged on one side of the upper yoke iron and the lower yoke iron, the middle part of the armature 10 is rotatably supported on the outer frame 6 through a rotating shaft, two ends of the armature 10 are respectively arranged with the upper yoke 1 and the lower yoke 2 in an opening and closing way, the magnetic steel 12 is arranged on the lower yoke 2 and is connected with the middle part of the armature 10 through a magnetic conduction piece 13, the magnetic steel 12 is close to the armature close to one end of the lower yoke 2, the outer frame 6 is provided with a contact spring system, the counter force of the contact spring system is applied to the armature 10, and the contact spring system is matched with the suction force generated by the electromagnetic system.
The magnetic conduction piece 13 is of a frame structure, two sides of the upper end of the magnetic conduction piece are provided with magnetic conduction piece connecting ends 15 protruding outwards, the magnetic steel 12 is arranged inside the magnetic conduction piece 13, and the magnetic conduction piece connecting ends 15 are connected with two sides of the armature above the middle rotating shaft in a contact mode.
And a middle rotating shaft accommodating groove 16 for accommodating the armature 10 is arranged below the magnetic conducting piece connecting end 15 on the frame structure of the magnetic conducting piece 13.
The bottom of the magnetic conduction piece 13 is in contact with the lower yoke 2, and a certain distance is reserved between the top of the magnetic conduction piece 13 and the upper yoke 1.
The magnetic iron comprises an upper yoke 1, a lower yoke 2 and a magnetic conducting piece 13, wherein two sides of the end parts of the upper yoke 1, the lower yoke 2 and the magnetic conducting piece 13 are respectively provided with a connecting boss protruding outwards, a clamping groove matched with the connecting boss and a rotating shaft in the middle of an armature 10 is arranged on an outer frame 6, and the outer frame 6 limits and fixes the rotating shaft in the middle of the upper yoke 1, the lower yoke 2, the magnetic conducting piece 13 and the armature 10.
The upper yoke iron 1, the lower yoke iron 2 and the coil group 3 are insulated by a coil frame 8.
An armature frame 11 is injected outside the armature 10, a contact spring connecting end 17 is arranged at the top of the armature frame 11, armature middle rotating shafts protruding outwards are arranged on two sides of the middle of the armature frame 11, and the wall thickness of the armature frame 11 can be passed by a magnetic circuit.
Example 1
Referring to fig. 1-5, the invention is an electromagnetic structure of a permanent magnet-containing balanced armature relay, comprising an upper yoke 1, a lower yoke 2, a coil group 3, an armature group 4, a magnetic steel group 5 and an outer frame 6, wherein the coil group 3 is composed of an iron core 7, a coil rack 8 and a coil 9, the armature group 4 is composed of an armature 10 and an armature frame 11, and the magnetic steel group 5 is composed of a magnetic steel 12, a magnetic conductive member 13 and a magnetic steel frame 14.
Referring to fig. 3, a coil 9 is wound on the coil frame 8, and the coil frame 8 is sleeved on the iron core 7 to form the coil assembly 3. The coil group 3 is assembled between the upper yoke iron 1 and the lower yoke iron 2, the yoke iron and the coil group 3 are insulated by a coil frame 8, and the coil frame 8 is made of engineering plastics.
Referring to fig. 4, the armature 10 is a flat plate, an armature frame 11 is injection molded on the outside of the armature 10 to form an armature group 4, the upper and lower ends of the armature 10 are exposed, the middle and the back are embedded into the armature frame 11, two ends of the middle of the armature frame 11 are provided with an outward protruding middle rotating shaft, and the middle rotating shaft is inserted into a clamping groove of the outer frame 6. The armature group 4 is limited by being matched with the outer frame 6, the armature group 4 can rotate in a certain range, the rotation direction is limited by the upper yoke iron 1 and the lower yoke iron 2, and the upper end and the lower end of the armature 10 are respectively arranged in a separated or closed contact mode with the upper yoke iron 1 and the lower yoke iron 2. Meanwhile, on the premise of not influencing rotation, the armature group 4 is close to the magnetic conduction piece 13 as much as possible.
Referring to fig. 5, the magnetic conductive member 13 and the magnetic steel 12 are fixed in the magnetic steel frame 14 to form the magnetic steel set 5, and the magnetic steel set 5 is placed on the lower yoke 2. The magnetic steel 12 is made of neodymium iron boron, samarium cobalt or alnico.
Referring to fig. 2 and 9, the upper yoke 1, the lower yoke 2 and the magnetic steel group 5 are limited and fixed by an outer frame 6, a contact spring system is arranged in the outer frame 6, the counter force of the contact spring system is applied to the armature group 4, and the counter force is matched with the suction force generated by the electromagnetic system to realize the action of the relay. The relay reaction force fit diagram is shown in fig. 9.
The working principle of the invention is as follows:
the permanent magnet balanced armature type electromagnetic structure comprises magnetic steel 12 which is a key part of an electromagnetic system. The electromagnetic system contains one big two big work air gaps, when coil group 3 is not circular telegram, see figure 6, the magnetic flux of little air gap department must be greater than the magnetic flux of big air gap department, the magnetic field force of little air gap department is greater than big air gap department magnetic field force, under the release state, armature group 4 and lower yoke 2 contact, armature group 4 can keep in the release position under the effect of permanent magnetism, because armature group 4 is in little air gap permanent magnetism magnetic circuit when contacting with lower yoke 2, the permanent magnetism suction between armature group 4 and lower yoke 2 is great, better promotion relay's environmental resistance under the release state performance.
When the coil assembly 3 is energized, referring to fig. 7, the electromagnetic attraction starts to act on the electromagnetic system, the direction of the magnetic field generated by the coil assembly 3 is opposite to the direction of the magnetic field generated at the small air gap, and is the same as the direction of the magnetic field at the large air gap, as the energizing current increases, the holding force between the armature assembly 4 and the lower yoke 2 at the small air gap gradually decreases, the holding force between the armature assembly 4 and the upper yoke 1 at the large air gap gradually increases, until the magnetic field force between the armature assembly 4 and the upper yoke 1 is greater than the sum of the counter force and the holding force between the armature assembly 4 and the lower yoke 2, the armature assembly 4 starts to rotate, until the armature assembly 4 contacts with the upper yoke 1, and reaches the attraction position, and the attraction process is completed. Because the direction of the permanent magnetic circuit between the armature set 4 and the upper yoke iron 1 is the same as the direction of the electromagnetic circuit, and meanwhile, the direction of the permanent magnetic circuit between the armature set 4 and the lower yoke iron 2 is opposite to the direction of the electromagnetic circuit, the power consumption required by the coil is greatly reduced.
When the coil assembly 3 is disconnected from current, referring to fig. 8, the electromagnetic attraction force is reduced, and due to the existence of the counter force in the contact spring system, when the magnetic holding force between the armature assembly 4 and the upper yoke iron 1 is smaller than the sum of the counter force and the magnetic field force between the armature assembly 4 and the lower yoke iron 2, the armature assembly 4 starts to rotate under the action of the counter force and the large-air-gap permanent magnetic circuit attraction force, until the armature assembly 4 is contacted with the lower yoke iron 2, and the release position is reached, and the release process is completed.
The invention adopts a permanent-magnet-containing electromagnetic structure which is divided into a yoke group, a coil group, an armature, magnetic steel and a magnetic conduction piece, wherein the upper yoke and the lower yoke are used as the yoke group. Under the power-off release state, the armature iron is contacted with the lower yoke iron, and when the power-on steering actuation position is adopted, the armature iron is contacted with the upper yoke iron. The contact area of the lower yoke iron and the armature iron is small, so that a larger holding force can be provided under the action of the permanent magnet loop, the vibration resistance and impact resistance of the relay in a release state are improved, and the bounce of the break contact is greatly reduced; in an attraction state, the contact area between the armature and the upper yoke is large, and the attraction force generated by a magnetic circuit after the coil is powered off is small, so that the release voltage is favorably improved, and the debugging difficulty is reduced; meanwhile, due to the existence of the permanent magnet mechanism, the power consumption and the volume of the electromagnetic relay are reduced, the part structure and the cost of the relay are reduced, and the sensitivity and the stability of the relay are improved.
Claims (8)
1. The utility model provides a contain balanced armature relay electromagnetic structure of permanent magnetism, includes upper yoke (1), lower yoke (2), coil assembly (3), iron core (7), coil former (8), coil (9), armature (10), magnet steel (12), be equipped with coil (9) on coil former (8), coil assembly (3) are constituteed in coil (9) to iron core (7), coil assembly (3) are arranged in between upper yoke (1) and lower yoke (2), its characterized in that: the magnetic steel armature iron is characterized in that the armature iron (10) is arranged on one side of the upper yoke iron and one side of the lower yoke iron, the middle part of the armature iron (10) is rotatably supported on an outer frame (6) through a rotating shaft, two ends of the armature iron (10) are respectively arranged in an opening and closing mode with the upper yoke iron (1) and the lower yoke iron (2), the magnetic steel (12) is arranged on the lower yoke iron (2) and is connected with the middle part of the armature iron (10) through a magnetic conduction piece (13), and the magnetic steel (12) is close to the armature iron close to one end of the lower yoke iron (2).
2. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: the magnetic conduction piece (13) is of a frame structure, the two sides of the upper end of the magnetic conduction piece are provided with magnetic conduction piece connecting ends (15) protruding outwards, the magnetic steel (12) is arranged on the magnetic conduction piece (13), and the magnetic conduction piece connecting ends (15) are connected with the two sides of the armature above the middle rotating shaft.
3. The electromagnetic structure of the relay with the permanent magnet balanced armature according to claim 2, characterized in that: and an accommodating groove (16) for accommodating the rotating shaft in the middle of the armature (10) is arranged below the magnetic conduction piece connecting end (15) on the frame structure of the magnetic conduction piece (13).
4. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: the bottom of the magnetic conduction piece (13) is in contact with the lower yoke (2), and the top of the magnetic conduction piece (13) is away from the upper yoke (1).
5. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: the magnetic iron comprises an upper yoke (1), a lower yoke (2) and a magnetic conduction piece (13), wherein two sides of the end parts of the upper yoke (1), the lower yoke (2) and the magnetic conduction piece (13) are respectively provided with a connecting boss protruding outwards, and a clamping groove matched with the connecting boss and a rotating shaft in the middle of an armature (10) is arranged on an outer frame (6) and used for limiting the rotating shaft in the middle of the upper yoke (1), the lower yoke (2), the magnetic conduction piece (13) and the armature (10).
6. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: the upper yoke iron (1), the lower yoke iron (2) and the coil group (3) are insulated by a coil rack (8).
7. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: armature frame (11) have been moulded plastics to armature (10) outside, armature frame (11) top is equipped with touches spring link (17) of being connected with the spring that touches of frame (6), and armature frame (11) middle part both sides are equipped with outside outstanding armature middle part pivot, armature frame (11) wall thickness can supply the magnetic circuit to pass through.
8. The electromagnetic structure of a relay with a balanced armature of permanent magnet according to claim 1, wherein: the magnetic steel (12) and the lower portion of the armature (10) form a first magnetic flux loop, the upper yoke (1), the iron core (7), the lower yoke (2), the magnetic steel (12) and the upper portion of the armature (10) form a second magnetic flux loop, the first magnetic flux loop and the second magnetic flux loop are opposite in direction, after a coil is electrified, the lower portions of the upper yoke (1), the iron core (7), the lower yoke (2) and the armature (10) form a coil magnetic flux loop to the upper portion, and the coil magnetic flux loop is opposite to the first magnetic flux loop and the second magnetic flux loop in direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673318.6A CN113314385A (en) | 2021-06-17 | 2021-06-17 | Electromagnetic structure of permanent magnet-containing balanced armature relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673318.6A CN113314385A (en) | 2021-06-17 | 2021-06-17 | Electromagnetic structure of permanent magnet-containing balanced armature relay |
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| Publication Number | Publication Date |
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| CN113314385A true CN113314385A (en) | 2021-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110673318.6A Pending CN113314385A (en) | 2021-06-17 | 2021-06-17 | Electromagnetic structure of permanent magnet-containing balanced armature relay |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035151A1 (en) * | 2021-09-08 | 2023-03-16 | 沈阳铁路信号有限责任公司 | Monostable clapper relay having permanent magnet |
-
2021
- 2021-06-17 CN CN202110673318.6A patent/CN113314385A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023035151A1 (en) * | 2021-09-08 | 2023-03-16 | 沈阳铁路信号有限责任公司 | Monostable clapper relay having permanent magnet |
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