CN212625400U - Novel magnetic latching relay structure - Google Patents
Novel magnetic latching relay structure Download PDFInfo
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- CN212625400U CN212625400U CN202021797353.6U CN202021797353U CN212625400U CN 212625400 U CN212625400 U CN 212625400U CN 202021797353 U CN202021797353 U CN 202021797353U CN 212625400 U CN212625400 U CN 212625400U
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- contact
- iron core
- latching relay
- magnetic latching
- coil
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Abstract
The utility model discloses a novel magnetic latching relay structure, including shell, electromagnetism operating mechanism, actuating mechanism, double contact to contact mechanism, explosion chamber, base, electromagnetism operating mechanism, actuating mechanism, double contact settle respectively in the shell to contact mechanism, actuating mechanism one end nestification in the middle of the electromagnetism operating mechanism, the other end then with double contact links up to contact mechanism's movable contact group, the explosion chamber is between double contact to contact mechanism's extreme condition, double contact is to the static contact in the contact mechanism then being fixed in the base. The utility model discloses a two sets of contacts are to direct contact's structure, with one of them set of contact to the actuating lever through non-magnetic conduction and the iron core lug connection that moves of electromagnetism operating mechanism, saved complicated mechanical type thrust unit, the product reliability is better, is difficult to fatigue and rupture, has effectively improved the life and the stability of product, has certain market perspective.
Description
Technical Field
The patent of the utility model relates to a low-voltage apparatus field especially relates to a novel magnetic latching relay structure.
Background
In recent years, global resource shortage and energy conservation become the subject of development of times. With the rapid development of microelectronics and electronic components, electrical devices are required to perform their functions while minimizing power consumption. Magnetic latching relays have been produced, become representatives of low-power-consumption relays, are made out of the neighborhoods of smart grid transformation, aerospace military and the like, and become key devices of technical innovation. At present, the product mainly adopts an electromagnetic mechanism as a drive, and meets the characteristic requirements of the product by connecting a mechanical pushing device and combining a spring rod type contact mechanism. However, the electromagnetic mechanism has a large magnetic circuit inductance generated in the using process, high requirements on the operating current and the power of the power supply, and poor controllability. Meanwhile, the spring rod type contact mechanism has limited fatigue resistance, is easy to fatigue and even break after acting for a certain number of times, and has poor reliability and stability.
Conventional relays are limited by their own manufacturing techniques, particularly by the small contact gap. During the breaking process, the arc phenomenon caused by the existence of a medium such as air in the contact gap is easy to cause serious consequences such as contact erosion, and therefore, the improvement is needed. The method is not only beneficial to improving the reliability and the electric service life of the product, but also is an important guarantee for realizing safe production.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel magnetic latching relay structure to solve and how to promote actual technical problem such as relay life and reliability.
In order to achieve the above purpose, the utility model discloses a following technical scheme can solve:
the utility model provides a novel magnetic latching relay structure, includes shell, electromagnetism operating mechanism, actuating mechanism, double contact to contact mechanism, explosion chamber, base, electromagnetism operating mechanism, actuating mechanism, double contact are settled respectively in the shell to contact mechanism, actuating mechanism one end nestification in the middle of the electromagnetism operating mechanism, the other end then with double contact links up to contact mechanism's movable contact group, the explosion chamber is between double contact to contact mechanism's extreme condition, double contact is then fixed in the base to the stationary contact group in the contact mechanism.
Further, electromagnetism operating mechanism is including moving iron core, quiet iron core, actuating lever, coil skeleton, first excitation coil, second excitation coil, permanent magnet, move the iron core nestification in the central authorities of coil skeleton, surround with quiet iron core all around, the actuating lever inlays in moving the iron core, first excitation coil, second excitation coil coiling are on the coil skeleton, permanent magnet nestification is arranged first excitation coil, the both ends of second excitation coil in respectively between the coil skeleton.
Furthermore, the currents of the first magnet exciting coil and the second magnet exciting coil are in opposite directions and are connected with the peripheral control circuit, the second magnet exciting coil for attracting action is wound on the left side of the coil framework, and on the contrary, the first magnet exciting coil for separating action is wound on the right side of the coil framework.
Furthermore, the coil framework avoids the contact of the first magnet exciting coil and the permanent magnet, and the movable iron core penetrates through the center of the coil framework and can slide back and forth on the coil framework.
Further, the coil skeleton is made of a non-magnetic material.
Furthermore, the double-contact opposite-contact mechanism adopts an up-down contact mode, the double-contact opposite-contact mechanism comprises a movable contact group and a fixed contact group, and the movable contact group and the fixed contact group can be completely matched when the relay is closed.
Furthermore, the movable contact group consists of a pair of movable contacts with the same shape and size, the movable contacts and the movable contacts are connected together by adopting a copper splitter plate, and the movable contacts are symmetrical in structural position.
Furthermore, the center position of the moving contact group is tightly connected with the driving connecting rod made of non-magnetic conductive material.
Furthermore, the static contact group and the movable contact group are symmetrically arranged to form a contact mechanism in a relative contact manner, and the static contact group is nested in the base and fixed on the clamping seat of the shell.
Furthermore, the movable iron core, the static iron core, the driving rod and the double-contact pair contact mechanism are provided with avoiding grooves which are mutually staggered in the relative motion process, so that the flexibility of the action of the double-contact pair contact mechanism is guaranteed.
The utility model has the advantages of:
(1) the utility model discloses bistable electromagnetic operating mechanism has good load output characteristic, can satisfy relay mechanical properties's requirement, can well cooperate with peripheral control circuit simultaneously, is favorable to improving the stability of its performance.
(2) The utility model discloses bistable electromagnetic operating mechanism motion process can produce certain acceleration, has improved its motion process's mechanical force greatly, has solved the contact failure problem that current contact mechanism leads to because of pressure is not enough.
(3) The utility model discloses be different from traditional spring rod formula contact mechanism, adopt two sets of contacts to realize the switch action of relay to direct contact's mode, with wherein a set of contact to the actuating lever through non-magnetic conduction and electromagnetism operating mechanism move the iron core lug connection, saved complicated mechanical type thrust unit, product reliability is better, has overcome the shortcoming that its contact pole action is easy tired and easily breaks, has effectively improved the life and the stability of product, has certain market perspective.
(4) The utility model discloses to the electric arc problem that exists between current contact mechanism contact, through adding the explosion chamber to contact mechanism spatial position all around at double contact, the explosion chamber is between double contact to contact mechanism's extreme condition, has effectively reduced the harm of electric arc.
(5) The utility model discloses the structure is inseparable, moves iron core, quiet iron core, actuating lever, double contact and has all settled the groove of dodging that staggers each other among the relative motion process with it to contact mechanism, ensures the flexibility of its action, has reduced mechanical failure rate effectively.
Drawings
Fig. 1 is a schematic structural view of the novel magnetic latching relay of the present invention;
fig. 2 is a plan view of the electromagnetic operating mechanism of the present invention;
fig. 3 is a distribution diagram of magnetic lines of force generated by the permanent magnet in the limit state of the driving mechanism of the present invention;
fig. 4 is a schematic view of a bistable contact mechanism of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, the novel magnetic latching relay structure of the present invention includes a housing 1, an electromagnetic operating mechanism 2, a driving mechanism 3, a dual-contact pair contact mechanism 4, an arc extinguish chamber 5, and a base 6. Wherein, electromagnetism operating mechanism 2, actuating mechanism 3, double contact are settled respectively in shell 1 to contact mechanism 4, double contact leads to the production of electric arc spark easily because of the existence of medium such as contact air gap under the condition of switching on to contact mechanism 4, the utility model discloses to this double contact adds explosion chamber 5 to contact mechanism 4 all around spatial position, explosion chamber 5 is between double contact to contact mechanism 4's extreme condition to reduce electric arc harm. One end of the driving mechanism 3 is connected with the moving contact pair in the double-contact pair contact mechanism 4 through a non-magnetic conductive material, and the other end is nested in the electromagnetic operating mechanism 2 and acts along with the movement of the electromagnetic operating mechanism 2. The electromagnetic operating mechanism 2 is fastened in the shell 1, and two ends of the electromagnetic operating mechanism are externally connected with a control circuit to indirectly control the movement of the driving mechanism 3. The static contact pair in the double-contact pair contact mechanism 4 is fixed on the base 6, and two ends of the static contact pair are led out and connected with a load circuit.
The electromagnetic operating mechanism 2 generates differential electromagnetic force by changing the current direction of the exciting coilAnd the driving mechanism 3 is driven to move, and the movable contact pair in the double-contact pair contact mechanism 4 is connected with the movable contact pair into a whole, so that the sucking and releasing processes of the relay are realized. The main parameter indexes are as follows: the control mode of the excitation coil is a double-excitation coil combination, wherein the coil is formed by winding enamelled copper wires on a plastic framework, the rated input voltage of the coil is 12V, the voltage of a load port can be connected with a load circuit of 250V alternating voltage/90A alternating current, the action frequency is 50Hz, and the error range can be controlled to be about +/-10%. In the material selection, the movable iron core and the static iron core are supposed to adopt electrician pure iron DT4, the permanent magnet is supposed to adopt neodymium iron boron (Nv-Fe-B) with the highest magnetic property, and the contact surface of the movable contact and the static contact is supposed to adopt contact material silver tin oxide (AgSnO) with excellent fusion welding resistance and arc erosion resistance2) And the driving rod part directly contacted with the contact adopts a non-magnetic conducting material, which is beneficial to reducing electromagnetic interference. The material selection of each part should be determined by combining the actual requirement and cost budget, and the specific parameter index should also be determined according to the actual situation.
As shown in fig. 2, the electromagnetic operating mechanism 2 includes a movable iron core 21, a stationary iron core 22, a driving rod 23, a coil frame 24, a first excitation coil 25, a second excitation coil 26, and a permanent magnet 27, the movable iron core 21 is nested in the center of the coil framework 24, the periphery of the movable iron core is surrounded by the static iron core 22, the driving rod 23 is embedded in the movable iron core 21, the first excitation coil 25 and the second excitation coil 26 are wound on the coil framework 24, the first magnet exciting coil 25 and the second magnet exciting coil 26 are in opposite directions and are connected with a peripheral control circuit, the second magnet exciting coil 26 with the attraction function is wound at the left side of the coil framework 24, on the contrary, the first magnet exciting coil 25 with the separation function is wound at the right side of the coil framework 24, the permanent magnet 27 is nested between the coil frames 24 and respectively disposed at two ends of the first and second excitation coils 25 and 26. The coil bobbin 24 made of non-magnetic conductive material avoids the contact between the first field coil 25 and the permanent magnet 27, and the movable iron core 21 penetrates the center of the coil bobbin 24 and can slide back and forth on the coil bobbin 24. The electromagnetic operating mechanism 2 is a special mechanism combining an electromagnet and a permanent magnet, and the action time of the system and the magnitude of the suction force and the counter force in the movement process need to be calculated in consideration of the electromagnetic and mechanical coupling influence so as to ensure the action reliability. In the electromagnetic operating mechanism, the number of turns of the exciting coil is reduced as much as possible, the wire diameter is increased, so that the inductance and the resistance of the exciting coil are reduced, and meanwhile, the action rate and the stability of the relay are improved by adopting methods of increasing a discharge capacitor, a capacitor voltage and the like on a peripheral control circuit.
The utility model discloses a novel magnetic latching relay structure is inseparable, moves iron core, quiet iron core, actuating lever, double contact and has all settled contact mechanism have with it relative motion in-process staggered each other dodge the groove, ensures the flexibility of its action, has reduced mechanical failure rate effectively.
Fig. 3 is a diagram showing a magnetic force line distribution generated by the permanent magnet in the limit state of the driving mechanism 3 according to the present invention. When the relay is in the closed or open position, no current flows through the first and second field coils 25, 26, and the permanent magnet 27 holds the plunger in the limit position by using the low reluctance path provided by the plunger 21. When the first field coil 25 is closed and dc power is applied, the current generates a closed field magnetic field having the same direction of magnetic lines as the permanent magnet 27 at the right end, and the plunger 21 is subjected to a magnetic force toward the right. When the sum of the total attractive forces to the plunger 21 is smaller than the mechanical load on the plunger 21 as the current in the first field coil 25 increases, the plunger 21 starts moving to the right. With the rightward movement of the movable iron core 21, an air gap occurs between the upper magnetic poles at the left end of the movable iron core 21, the magnetic resistance at the left end increases, and the magnetic resistance at the right end decreases, so that the movable iron core 21 makes acceleration-variable movement with increased acceleration until reaching a closing position, the closing process is completed, and the movable iron core 21 is kept in a closing state by means of a magnetic field generated by the permanent magnet 27. The opening process and the closing process are opposite, when the second excitation coil 26 is powered by direct current, the current in the second excitation coil 26 is separated to generate a reverse magnetic field in the right gap, the total attraction force on the movable iron core 21 is reduced, when the attraction force is smaller than the mechanical load on the movable iron core 21, the movable iron core 21 moves leftwards, the movable and static contacts are opened, and the movable iron core 21 is attracted by the permanent magnet 27 again and is kept at the opening position.
As shown in fig. 4, the dual-contact counter-contact mechanism 4 adopts a contact manner of up-down contact, and the dual-contact counter-contact mechanism 4 includes a movable contact group 42 and a fixed contact group 43, and the movable contact group 42 and the fixed contact group 43 can be completely matched when the relay is closed. In the double-contact pair contact mechanism 4, the movable contact group 42 is composed of a pair of movable contacts with the same shape and size, the movable contacts and the movable contacts are connected together by adopting metal copper splitter plates, the movable contacts and the movable contacts are symmetrical in structural position, and the central position of the movable contacts is tightly connected with the drive connecting rod 41 made of non-magnetic conductive materials. The fixed contact group 43 and the movable contact group 42 are symmetrically arranged to form a contact mechanism of opposite contact type. The static contact is nested in the metal base and fixed on the clamping seat of the shell. The utility model discloses be different from traditional spring rod formula contact mechanism, adopt two sets of contacts to realize the switch action of relay to direct contact's mode, with wherein a set of contact to the actuating lever through non-magnetic conduction and electromagnetism operating mechanism move the iron core lug connection, saved complicated mechanical type thrust unit, product reliability is better, has overcome the shortcoming that its contact pole action is easy tired and easily breaks, has effectively improved the life and the stability of product, has certain market perspective.
It should be understood that the above description is only a preferred embodiment of the present invention, but not intended to limit the present invention in any way. Any person skilled in the art can use the above disclosure to make possible variations and modifications of the invention, or to modify it to equivalent embodiments without departing from the scope of the invention. Therefore, all other embodiments that can be obtained by a person skilled in the art in the light of the present disclosure are considered to be within the scope of the present disclosure.
Claims (10)
1. A novel magnetic latching relay structure is characterized in that: the electromagnetic operating mechanism, the driving mechanism and the double-contact opposite-contact mechanism are respectively arranged in the shell, one end of the driving mechanism is nested in the electromagnetic operating mechanism, the other end of the driving mechanism is connected with a movable contact set of the double-contact opposite-contact mechanism, the arc extinguish chamber is arranged between the limit states of the double-contact opposite-contact mechanism, and a static contact set in the double-contact opposite-contact mechanism is fixed in the base.
2. The novel magnetic latching relay structure according to claim 1, wherein the electromagnetic actuator comprises a movable iron core, a stationary iron core, a driving rod, a coil bobbin, a first excitation coil, a second excitation coil and a permanent magnet, the movable iron core is nested in the center of the coil bobbin and surrounded by the stationary iron core, the driving rod is embedded in the movable iron core, the first excitation coil and the second excitation coil are wound on the coil bobbin, and the permanent magnet is nested between the coil bobbin and is respectively arranged at two ends of the first excitation coil and the second excitation coil.
3. The novel magnetic latching relay structure of claim 2, wherein the first and second excitation coils are in opposite directions and connected to the peripheral control circuit, the second excitation coil for engaging is wound on the left side of the coil bobbin, and the first excitation coil for disengaging is wound on the right side of the coil bobbin.
4. The novel magnetic latching relay structure of claim 2, wherein the coil bobbin avoids the contact between the first excitation coil and the permanent magnet, and the plunger penetrates through the central position of the coil bobbin and can slide back and forth on the coil bobbin.
5. The novel magnetic latching relay structure of claim 2, wherein said bobbin is made of a non-magnetically conductive material.
6. The novel magnetic latching relay structure according to claim 1, wherein the dual-contact pair contact mechanism adopts a contact mode of up-down contact type, and comprises a movable contact group and a fixed contact group, and the movable contact group and the fixed contact group can be completely matched when the relay is closed.
7. The novel magnetic latching relay structure of claim 6, wherein the moving contact group is composed of a pair of moving contacts with the same shape and size, and the moving contacts are connected together by a copper splitter plate, and the moving contacts are symmetrical in structural position.
8. The novel magnetic latching relay structure of claim 7, wherein the moving contact set is tightly connected to the driving connecting rod made of non-magnetic material at a central position.
9. The novel magnetic latching relay structure of claim 6, wherein the fixed contact set and the movable contact set are symmetrically arranged to form a contact mechanism of opposite contact type, and the fixed contact set is nested in the base and fixed on the clamping seat of the housing.
10. The novel magnetic latching relay structure according to claim 2, wherein the movable iron core, the stationary iron core, the driving rod and the dual-contact pair contact mechanism are provided with avoiding grooves which are mutually staggered in the relative movement process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797353.6U CN212625400U (en) | 2020-08-25 | 2020-08-25 | Novel magnetic latching relay structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021797353.6U CN212625400U (en) | 2020-08-25 | 2020-08-25 | Novel magnetic latching relay structure |
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| Publication Number | Publication Date |
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| CN212625400U true CN212625400U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021797353.6U Expired - Fee Related CN212625400U (en) | 2020-08-25 | 2020-08-25 | Novel magnetic latching relay structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068239A (en) * | 2021-11-10 | 2022-02-18 | 深圳市美韵声科技有限公司 | Intelligent breaker for safely closing power consumption of power distribution system |
-
2020
- 2020-08-25 CN CN202021797353.6U patent/CN212625400U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114068239A (en) * | 2021-11-10 | 2022-02-18 | 深圳市美韵声科技有限公司 | Intelligent breaker for safely closing power consumption of power distribution system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210226 Termination date: 20210825 |