CN210692442U - Electromagnetic relay for realizing arc extinction based on soft magnet - Google Patents
Electromagnetic relay for realizing arc extinction based on soft magnet Download PDFInfo
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- CN210692442U CN210692442U CN201921620927.XU CN201921620927U CN210692442U CN 210692442 U CN210692442 U CN 210692442U CN 201921620927 U CN201921620927 U CN 201921620927U CN 210692442 U CN210692442 U CN 210692442U
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Abstract
The utility model discloses an electromagnetic relay for realizing arc extinction based on a soft magnet, which comprises a movable spring part, a static spring part, an armature part and a pushing card; the movable push card is composed of a soft magnetic material body on one side and an insulating material body on the other side; the soft magnetic material body of the push card is provided with a first card part which is matched with the movable reed in a clamping way; the insulating material body of the push card is clamped and matched with the armature part; one end of the soft magnetic material body of the push card is correspondingly arranged on the matched side edge of the movable contact and the fixed contact, and the projections of the one end of the soft magnetic material body at the movable contact and the fixed contact at least cover a part of the gap between the movable contact and the fixed contact when the contacts are disconnected. The utility model discloses a this kind of structure both can realize the arc extinguishing, does not have the polarity requirement to the wiring of relay simultaneously, still can avoid among the prior art need set up magnet steel mounted position and make the drawback that relay product volume enlarges.
Description
Technical Field
The utility model relates to a relay technical field especially relates to an electromagnetic relay based on soft magnet realizes arc extinguishing.
Background
A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
When a moving contact (moving contact) and a static contact (static contact) in switching devices such as relays are disconnected, electric arcs are usually generated, and forced arc extinction is realized by pushing the electric arcs to an arc extinction chamber by using an external magnetic field. In the prior art, the arc extinguishing is realized as external magnetic field in the block (being permanent magnet, also called magnet steel) that hard magnetic material made at present in the direct current field of relay usually, and the wiring has polarity in the product practicality of this kind of structure formation, can't be applied to in the alternating current field, in addition, still need set up the mounted position of magnet steel in the relay for the product volume becomes great, can't realize the miniaturization of relay product volume, and the cost also increases moreover.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide an electromagnetic relay based on soft magnet realizes the arc extinguishing, both can realize the arc extinguishing, do not have the polarity requirement to the wiring of relay simultaneously, still can avoid needing to set up the magnet steel mounted position among the prior art and make the drawback that relay product volume enlarges.
The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic relay for realizing arc extinction based on soft magnet comprises a movable spring part, a static spring part, an armature part and a pushing card; the movable spring part comprises a movable spring piece and a movable contact connected with one end of the movable spring piece; the static spring part comprises a static spring piece and a static contact connected with one end of the static spring piece, and the movable contact and the static contact are positioned at matched positions; the push card is composed of a soft magnetic material body on one side and an insulating material body on the other side; the soft magnetic material body of the push card is provided with a first card part which is matched with the movable reed in a clamping way; the insulating material body of the push card is provided with a second card part which is matched with the armature part in a clamping way; one end of the soft magnetic material body of the push card corresponds to the side edge where the movable contact and the fixed contact are matched, and the projections of the one end of the soft magnetic material body at the movable contact and the fixed contact at least cover a part of the gap between the movable contact and the fixed contact when the contacts are disconnected, so that the electric arc is led to the direction of the soft magnetic material body all the time to realize arc extinction by utilizing the magnetizing magnetic field formed by the magnetizing of the electric arc magnetic field on the soft magnetic material body when the movable contact and the fixed contact are disconnected.
The distance from one end of the soft magnetic material body to the fixed contact and the distance from one end of the soft magnetic material body to the fixed spring leaf are both larger than the distance for disconnecting the movable contact and the fixed contact.
The soft magnetic material body is a part made of magnetic conductive ferromagnetic material.
The soft magnetic material body is a part made of a metal material with a high melting point.
The first clamping part is arranged at one end of the soft magnetic material body, the other end of the soft magnetic material body is provided with a first riveting part, the second clamping part is arranged at one end of the insulating material body, the other end of the insulating material body is provided with a second riveting part, and the soft magnetic material body and the insulating material body are fixedly connected into an integral part through riveting between the first riveting part and the second riveting part.
The first clamping part is arranged at one end of the soft magnetic material body, and the insulating material body is coated at the other end of the soft magnetic material body in an injection molding mode, so that the soft magnetic material body and the insulating material body are connected into an integral component.
The other end of the soft magnetic material body is also provided with a plurality of through holes, and the insulating material body is filled in the through holes of the soft magnetic material body so as to enhance the connection strength between the soft magnetic material body and the insulating material body.
And a lamination formed by bending is arranged at one end of the soft magnetic material body so as to increase the thickness of the end of one end of the soft magnetic material body and enhance the arc striking capability.
And the end head of one end of the soft magnetic material body is also riveted or welded with a magnetic conduction block so as to increase the thickness of the end head of one end of the soft magnetic material body and enhance the arc striking capability.
The first clamping part comprises a first pushing arm arranged at one end of the soft magnetic material body, a second pushing arm arranged in one end of the soft magnetic material body and a clamping groove formed between the first pushing arm and the second pushing arm, and the movable spring is clamped in the clamping groove.
The first pushing arm and the second pushing arm are distributed in a staggered mode, and the first pushing arm is closer to a connecting line between the movable contact and the static contact relative to the second pushing arm.
And one surface of the first pushing arm and one surface of the second pushing arm, which are matched with the movable spring pieces, are respectively provided with a convex part.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model adopts the pushing card which is composed of a soft magnetic material body on one side and an insulating material body on the other side; the soft magnetic material body of the push card is provided with a first card part which is matched with the movable reed in a clamping way; the insulating material body of the push card is provided with a second card part which is matched with the armature part in a clamping way; one end of the soft magnetic material body of the push card corresponds to the side edge where the movable contact and the fixed contact are matched, and the projections of the one end of the soft magnetic material body at the movable contact and the fixed contact at least cover a part of the gap between the movable contact and the fixed contact when the contacts are disconnected, so that the magnetic field formed by the magnetization of the soft magnetic material body by the arc magnetic field when the movable contact and the fixed contact are disconnected is utilized, and the arc is always led to the direction of the soft magnetic material body to realize arc extinction. The utility model discloses a structure, when the contact divides absolutely, produce electric arc between the contact, arc current produces magnetic field, magnetic field makes the soft magnetic material body magnetization, magnetic blowing force is produced in the magnetic field after the soft magnetic material body magnetization makes electric arc to the removal of soft magnetic material body front end, electric arc is elongated and is accelerated to extinguish, thereby promote the arc extinguishing ability of relay, because the direction in soft magnetic material body magnetization magnetic field changes along with the positive and negative direction of electric current, there is not polarity requirement to the wiring of relay, and simultaneously, because it is the necessary piece of relay to push away the card, need not to increase part and incremental cost, also need not to design the mounted position that adopts the magnet steel and needs among the prior art, be convenient for realize the miniaturization of relay product volume.
2. The utility model discloses owing to adopted the one end of soft magnetic material body to the distance of stationary contact to and the one end of soft magnetic material body to the distance of stationary reed, all be greater than the distance of disconnection between movable contact and the stationary contact. The utility model discloses a certain air gap can be guaranteed to this kind of structure, makes electric arc can not promote card and stationary contact to and promote and produce between card and the stationary reed, avoided the promotion card that has soft magnetic material body to be punctured.
3. The utility model adopts the pushing card which is composed of a soft magnetic material body on one side and an insulating material body on the other side; the soft magnetic material body of the push card is provided with a first card part which is matched with the movable reed in a clamping way. The utility model discloses a this kind of structure adopts soft magnetic material body and movable contact spring joint cooperation, for prior art's plastic material body and movable contact spring joint cooperation, soft magnetic material body is high temperature resistant, can avoid plastics to promote caine high temperature to melt and bond together and cause the drawback of relay inefficacy with the movable contact spring.
4. The utility model discloses owing to adopted the one end correspondence of the soft magnetic material body that will push away the card at movable contact and stationary contact matched with side, soft magnetic material be in promptly with movable contact spring complex push rod head position, have good heat conductivity, can cool off the arc temperature rapidly, reach the effect of quick striking, arc-break.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment, and the electromagnetic relay for arc extinction based on the soft magnet is provided.
Drawings
FIG. 1 is a schematic diagram I;
FIG. 2 is a schematic diagram II;
fig. 3 is a partial schematic structural view (contact closed) of the first embodiment of the present invention;
fig. 4 is a schematic view of a movable spring plate and a push card according to a first embodiment of the present invention;
fig. 5 is a schematic view of the movable spring plate and the push card according to the first embodiment of the present invention;
fig. 6 is a front view of the movable spring plate and the push card according to the first embodiment of the present invention;
fig. 7 is a top view of the movable spring plate and the push card according to the first embodiment of the present invention;
fig. 8 is a schematic perspective view of a push card according to a first embodiment of the present invention;
fig. 9 is a sectional view of a push card according to a first embodiment of the present invention;
fig. 10 is a schematic view illustrating the formation of the magnetization magnetic field of the push card according to the first embodiment of the present invention;
fig. 11 is a schematic diagram illustrating the magnetic field arc extinguishing of the push card according to the first embodiment of the present invention;
fig. 12 is a schematic perspective view of a push card according to a second embodiment of the present invention;
fig. 13 is an exploded view of the push card according to the second embodiment of the present invention;
fig. 14 is a schematic view of a movable spring plate and a push card according to a third embodiment of the present invention;
fig. 15 is a schematic view of the movable spring plate and the push card according to the third embodiment of the present invention;
fig. 16 is a front view of the movable contact spring and the push card according to the fourth embodiment of the present invention;
fig. 17 is a schematic structural diagram of a push card according to a fifth embodiment of the present invention.
Detailed Description
Description of the principle: as shown in fig. 1, when the arc current 100 flows outward from the direction perpendicular to the drawing, a magnetic field M1 is formed at the periphery of the arc, the magnetic field M1 magnetizes a soft magnetic material body 200 (e.g., electrician pure iron), a magnetizing magnetic field M2 with an N pole on the left and an S pole on the right is formed, and an upward magnetic blowing force F1 is formed under the action of the magnetizing magnetic field M2, that is, the arc current 100 is allowed to strike the soft magnetic material body 200; as shown in fig. 2, when the arc current 100 flows in from the direction perpendicular to the drawing surface, a magnetic field M3 is formed around the arc, the magnetic field M3 magnetizes the soft magnetic material body 200 to form a magnetization magnetic field M4 with the N pole on the right and the S pole on the left, and an upward magnetic blowing force F2 is formed under the action of the magnetization magnetic field M4, that is, the arc current 100 is allowed to strike the soft magnetic material body 200; therefore, the arc current 100 can be directed toward the soft magnetic material body 200 regardless of the direction of the arc current 100.
Example one
Referring to fig. 3 to 11, an electromagnetic relay for realizing arc extinction based on soft magnet of the present invention includes a movable spring portion 1, a stationary spring portion 2, an armature portion 3 and a push card 4; the movable spring part 1 comprises a movable spring plate 11 and a movable contact 12 connected with one end of the movable spring plate; the static spring part 2 comprises a static spring piece 21 and a static contact 22 connected with one end of the static spring piece, and the movable contact 12 and the static contact 22 are in matched positions; the push card 4 is composed of a soft magnetic material body 41 on one side and an insulating material body 42 on the other side, in this embodiment, the soft magnetic material body 41 is a magnetic conductive ferromagnetic material, specifically pure iron, and the insulating material body 42 is plastic, of course, the soft magnetic material body may also be a metal material with a high melting point, such as steel with a melting point temperature of more than 1500 ℃; the soft magnetic material body 41 of the push card 4 is provided with a first card part which is matched with the movable reed 11 in a clamping way; the insulating material body 42 of the push card 4 is provided with a second clamping part 421 which is clamped and matched with the armature part 3, and the second clamping part 421 is provided with a clamping hole structure; one end head 411 of the soft magnetic material body 41 of the push card 4 is correspondingly arranged on the side edge where the movable contact 12 is matched with the fixed contact 22, and the projection of the one end head 411 of the soft magnetic material body at the movable contact and the fixed contact at least covers a part of the gap between the movable contact and the fixed contact when the contacts are disconnected, so that the electric arc is always led to the direction of the soft magnetic material body to realize arc extinction by utilizing the magnetizing magnetic field formed by the magnetization of the electric arc magnetic field to the soft magnetic material body when the movable contact and the fixed contact are disconnected; as shown in fig. 10 and 11, when the current I flows from the stationary reed to the movable reed, an arc magnetic field M5 is formed around the arc current 10, a magnetization magnetic field M5 magnetizes the arc current to form a magnetization magnetic field M6 in the soft magnetic material body 41, and the arc current 10 is drawn to the end 411 of the soft magnetic material body 41 by a magnetic blowing force F3 of the magnetization magnetic field M6.
In this embodiment, the distance from the end 411 of the soft magnetic material body 41 to the fixed contact 22 and the distance from the end 411 of the soft magnetic material body to the fixed spring 41 are both greater than the distance of the disconnection between the movable contact 12 and the fixed contact 22.
In this embodiment, the first clamping portion is disposed at one end of the soft magnetic material body 41, and the insulating material body 42 is coated at the other end of the soft magnetic material body 41 by injection molding, so that the soft magnetic material body 41 and the insulating material body 42 are connected into an integral component.
In this embodiment, the other end of the soft magnetic material body 41 is further provided with a plurality of through holes 412, and the insulating material body 42 is filled in the plurality of through holes 412 of the soft magnetic material body to enhance the connection strength between the soft magnetic material body 41 and the insulating material body 42.
In this embodiment, the first clamping portion includes a first push arm disposed at one end of the soft magnetic material (i.e., the one end of the soft magnetic material constitutes the first push arm), a second push arm 413 disposed in the one end of the soft magnetic material, and a clamping groove 414 formed between the first push arm 411 and the second push arm 413, and the movable spring 11 is clamped in the clamping groove 414.
In this embodiment, the slot 414 is substantially i-shaped and is adapted to receive a movable contact spring therein from the middle, such as for dual contacts.
In this embodiment, the first pushing arm 411 and the second pushing arm 413 are distributed in a staggered manner, and the first pushing arm 411 is closer to a connection line between the moving contact and the static contact than the second pushing arm 413.
In this embodiment, the first push arm 411 and the second push arm 413 have protrusions 415 and 416 on the surfaces that engage with the movable spring 11, respectively. The first pushing arm 411 is used to pull the movable contact spring 11 open through the protrusion 415 to open the movable and stationary contacts, and the second pushing arm 413 is used to push the movable contact spring 11 through the protrusion 416 to close the movable and stationary contacts.
The utility model discloses an electromagnetic relay based on soft magnet realizes arc extinguishing, has adopted the promotion card 4 to constitute by soft magnetic material body 41 and insulating material body 42 of the other side on one side; the soft magnetic material body 41 of the push card is provided with a first card part which is matched with the movable reed 11 in a clamping way; the insulating material body 42 of the push card is provided with a second card part which is matched with the armature part 3 in a clamping way; one end head 411 of the soft magnetic material body 41 of the push card is correspondingly arranged on the matched side edge of the movable contact 12 and the fixed contact 22, and the projection of the one end head 411 of the soft magnetic material body at the movable contact and the fixed contact at least covers part of the gap between the movable contact and the fixed contact when the contacts are disconnected, so that the magnetic field formed by the magnetization of the soft magnetic material body by the arc magnetic field when the movable contact and the fixed contact are disconnected is utilized, and the arc is always led to the direction of the soft magnetic material body to realize arc extinction. The utility model discloses a structure, when the contact is disconnected, produce arc current 10 between the contact, arc current 10 produces magnetic field M5, magnetic field M5 makes the magnetization of soft magnetic material body 41, magnetic field M6 after the magnetization of soft magnetic material body 41 produces magnetism and blows power F3 and makes electric arc to the removal of soft magnetic material body front end, electric arc is elongated and is accelerated to extinguish, thereby promote the arc extinguishing ability of relay, because the direction in soft magnetic material body magnetization magnetic field changes along with the positive and negative direction of electric current, there is not polarity requirement to the wiring of relay, and simultaneously, because it is the must piece of relay to push away card 4, need not to increase part and incremental cost, also need not to design the mounted position that adopts the magnet steel and need among the prior art, be convenient for realize the miniaturization of relay product volume.
The utility model discloses an electromagnetic relay based on soft magnet realizes arc extinguishing has adopted the one end 411 of soft magnetic material body to the distance of stationary contact 22 to and the one end 411 of soft magnetic material body to the distance of stationary contact 21, all is greater than the distance of disconnection between movable contact 12 and the stationary contact 22. The utility model discloses a certain air gap can be guaranteed to this kind of structure, makes electric arc can not promote card and stationary contact to and promote and produce between card and the stationary reed, avoided the promotion card that has soft magnetic material body to be punctured.
The utility model discloses an electromagnetic relay based on soft magnet realizes arc extinguishing, has adopted the promotion card 4 to constitute by soft magnetic material body 41 and insulating material body 42 of the other side on one side; the soft magnetic material body 41 of the push card is provided with a first card part which is in clamping fit with the movable reed 11. The utility model discloses a this kind of structure adopts soft magnetic material body 41 and the cooperation of 11 joints of movable contact spring, for the cooperation of prior art's plastic material body and movable contact spring joint, soft magnetic material body 41 is high temperature resistant, can avoid plastics to promote caine high temperature to melt and bond together and cause the drawback of relay inefficacy with the movable contact spring.
The utility model discloses an electromagnetic relay based on soft magnet realizes arc extinguishing has adopted the one end correspondence of the soft magnetic material body 41 that will promote card 4 at movable contact and stationary contact matched with side, and soft magnet is in promptly and promotes the pole head position with movable contact spring complex, has good heat conductivity, can cool off the arc temperature rapidly, reaches the effect of quick striking, arc-break.
Example two
Referring to fig. 12 and 13, an electromagnetic relay according to the present invention for realizing arc extinction based on a soft magnetic body differs from the first embodiment in that a connection manner of a soft magnetic material body 41 and an insulating material body 42 is different, in this embodiment, the first clamping portion is disposed at one end of the soft magnetic material body 41, the other end of the soft magnetic material body is provided with a first riveting portion, that is, a riveting hole 417 is disposed, the second clamping portion is disposed at one end of the insulating material body 42, the other end of the insulating material body is provided with a second riveting portion, that is, a riveting hole 422 is disposed, and the soft magnetic material body 41 and the insulating material body 42 are fixedly connected into an integral component by riveting between the first riveting portion and the second riveting portion, that is, the riveting hole 417 of the soft magnetic material body 41 and the riveting hole 422 of the insulating material body 42 are riveted together by a rivet 43.
EXAMPLE III
Referring to fig. 14 and 15, the electromagnetic relay according to the present invention is different from the first embodiment in that the engaging groove 418 between the first pushing arm 411 and the second pushing arm 413 is open at one side, and is suitable for being engaged with the movable contact spring 11 from one side.
Example four
Referring to fig. 16, the difference between the electromagnetic relay according to the first embodiment and the electromagnetic relay according to the present invention, which is based on soft magnetic material for arc extinction, is that the end 411 of the soft magnetic material is provided with a lamination 51 formed by bending to increase the thickness of the end 411 of the soft magnetic material for arc extinction, so as to enhance the arc striking capability.
EXAMPLE five
Referring to fig. 17, the present invention relates to an electromagnetic relay for realizing arc extinction based on a soft magnetic material, which is different from the first embodiment in that a magnetic conductive block 52 is further riveted or welded to an end 411 of one end of the soft magnetic material, so as to increase the thickness of the end 411 of the one end of the soft magnetic material, and enhance the arc striking capability.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (12)
1. An electromagnetic relay for realizing arc extinction based on soft magnet comprises a movable spring part, a static spring part, an armature part and a pushing card; the movable spring part comprises a movable spring piece and a movable contact connected with one end of the movable spring piece; the static spring part comprises a static spring piece and a static contact connected with one end of the static spring piece, and the movable contact and the static contact are positioned at matched positions; the method is characterized in that: the push card is composed of a soft magnetic material body on one side and an insulating material body on the other side; the soft magnetic material body of the push card is provided with a first card part which is matched with the movable reed in a clamping way; the insulating material body of the push card is provided with a second card part which is matched with the armature part in a clamping way; one end of the soft magnetic material body of the push card corresponds to the side edge where the movable contact and the fixed contact are matched, and the projections of the one end of the soft magnetic material body at the movable contact and the fixed contact at least cover a part of the gap between the movable contact and the fixed contact when the contacts are disconnected, so that the electric arc is led to the direction of the soft magnetic material body all the time to realize arc extinction by utilizing the magnetizing magnetic field formed by the magnetizing of the electric arc magnetic field on the soft magnetic material body when the movable contact and the fixed contact are disconnected.
2. An electromagnetic relay according to claim 1, characterized in that: the distance from one end of the soft magnetic material body to the fixed contact and the distance from one end of the soft magnetic material body to the fixed spring leaf are both larger than the distance for disconnecting the movable contact and the fixed contact.
3. An electromagnetic relay according to claim 1 or 2, characterized in that: the soft magnetic material body is a part made of magnetic conductive ferromagnetic material.
4. An electromagnetic relay according to claim 1 or 2, characterized in that: the soft magnetic material body is a part made of a metal material with a high melting point.
5. An electromagnetic relay according to claim 1 or 2, characterized in that: the first clamping part is arranged at one end of the soft magnetic material body, the other end of the soft magnetic material body is provided with a first riveting part, the second clamping part is arranged at one end of the insulating material body, the other end of the insulating material body is provided with a second riveting part, and the soft magnetic material body and the insulating material body are fixedly connected into an integral part through riveting between the first riveting part and the second riveting part.
6. An electromagnetic relay according to claim 1 or 2, characterized in that: the first clamping part is arranged at one end of the soft magnetic material body, and the insulating material body is coated at the other end of the soft magnetic material body in an injection molding mode, so that the soft magnetic material body and the insulating material body are connected into an integral component.
7. An electromagnetic relay according to claim 6, characterized in that: the other end of the soft magnetic material body is also provided with a plurality of through holes, and the insulating material body is filled in the through holes of the soft magnetic material body so as to enhance the connection strength between the soft magnetic material body and the insulating material body.
8. An electromagnetic relay according to claim 1 or 2, characterized in that: and a lamination formed by bending is arranged at one end of the soft magnetic material body so as to increase the thickness of the end of one end of the soft magnetic material body and enhance the arc striking capability.
9. An electromagnetic relay according to claim 1 or 2, characterized in that: and the end head of one end of the soft magnetic material body is also riveted or welded with a magnetic conduction block so as to increase the thickness of the end head of one end of the soft magnetic material body and enhance the arc striking capability.
10. An electromagnetic relay according to claim 1 or 2, characterized in that: the first clamping part comprises a first pushing arm arranged at one end of the soft magnetic material body, a second pushing arm arranged in one end of the soft magnetic material body and a clamping groove formed between the first pushing arm and the second pushing arm, and the movable spring is clamped in the clamping groove.
11. An electromagnetic relay according to claim 10, characterized in that: the first pushing arm and the second pushing arm are distributed in a staggered mode, and the first pushing arm is closer to a connecting line between the movable contact and the static contact relative to the second pushing arm.
12. An electromagnetic relay according to claim 10, characterized in that: and one surface of the first pushing arm and one surface of the second pushing arm, which are matched with the movable spring pieces, are respectively provided with a convex part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620927.XU CN210692442U (en) | 2019-09-26 | 2019-09-26 | Electromagnetic relay for realizing arc extinction based on soft magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921620927.XU CN210692442U (en) | 2019-09-26 | 2019-09-26 | Electromagnetic relay for realizing arc extinction based on soft magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210692442U true CN210692442U (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921620927.XU Active CN210692442U (en) | 2019-09-26 | 2019-09-26 | Electromagnetic relay for realizing arc extinction based on soft magnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210692442U (en) |
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2019
- 2019-09-26 CN CN201921620927.XU patent/CN210692442U/en active Active
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