CN112786364A - Insulated and isolated type clamping type electromagnetic relay - Google Patents
Insulated and isolated type clamping type electromagnetic relay Download PDFInfo
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- CN112786364A CN112786364A CN202110169547.4A CN202110169547A CN112786364A CN 112786364 A CN112786364 A CN 112786364A CN 202110169547 A CN202110169547 A CN 202110169547A CN 112786364 A CN112786364 A CN 112786364A
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- insulator
- clamping
- electromagnet
- armature
- containing cavity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
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- Electromagnetism (AREA)
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Abstract
The invention relates to the technical field of relays, and particularly discloses an insulation isolation type clamping electromagnetic relay which comprises an insulator, an electromagnet and a contact unit, wherein the electromagnet and the contact unit are clamped on the insulator; the electromagnetic contactor also comprises an armature and a push sheet, wherein the insulator is provided with a first containing cavity, a second containing cavity separated from the first containing cavity and a guide hole communicated with the first containing cavity and the second containing cavity; the electromagnet and the contact unit are respectively accommodated in the first accommodating cavity and the second accommodating cavity which are isolated from each other, so that on one hand, the creepage distance between the electromagnet and the contact unit is increased, the short circuit damage between the electromagnet and the contact unit is avoided, and the use safety is improved; on the other hand, the electromagnet and the contact unit are separated, poor installation caused by touch interference of the electromagnet and the contact unit in the installation process is avoided, and the installation yield is improved.
Description
Technical Field
The invention relates to the technical field of relays and particularly discloses an insulation isolation type clamping electromagnetic relay.
Background
The electromagnetic relay mainly comprises a magnet unit and a terminal unit, and because the structural design of the electromagnetic relay in the prior art is unreasonable, on one hand, the electromagnetic relay is too close to cause short circuit and damage, and on the other hand, the electromagnetic relay can be touched with each other to interfere with damage and cause poor installation in the installation process.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an insulation isolation type clamping type electromagnetic relay, which increases the creepage distance between an electromagnet and a contact unit, avoids the short circuit and damage of the electromagnet and the contact unit, avoids the poor installation caused by the contact interference of the electromagnet and the contact unit in the installation process, and improves the installation yield.
In order to achieve the purpose, the insulation isolation type clamping type electromagnetic relay comprises an insulator, an electromagnet and a contact unit, wherein the electromagnet and the contact unit are clamped on the insulator; the electromagnetic contactor also comprises an armature and a push sheet, wherein the insulator is provided with a first containing cavity, a second containing cavity separated from the first containing cavity and a guide hole communicated with the first containing cavity and the second containing cavity; the electromagnet is used for driving the armature to move, and the moving armature drives the contact unit to be switched on or switched off through the push sheet.
The contact unit comprises a first terminal, a second terminal and a movable contact spring, the terminal is provided with a first clamping part, a welding leg which is formed by bending the first clamping part and extends out of the insulator in a protruding mode, the insulator is provided with two first clamping grooves, the contact unit is located in the first containing cavity, the first clamping parts of the two terminals are clamped and inserted on the insulator and located in the two first clamping grooves respectively, the first clamping part of the first terminal is provided with a fixed contact, one end of the movable contact spring is arranged at the first clamping part of the second terminal, the other end of the movable contact spring is provided with a movable contact, the push piece extends into the first containing cavity in a protruding mode and is used for abutting against the middle of the movable contact spring, and the movable contact is used for.
The insulator is provided with a second clamping groove, the stopper is provided with a second clamping part and a stopping part arranged on the second clamping part, the second clamping part is clamped and inserted with the insulator and is positioned in the second clamping groove, the stopping part extends into the first containing cavity and is used for stopping the other end of the movable spring, and the other end of the movable spring and the movable contact are both positioned between the static contact and the stopping part.
The pushing piece comprises a plate body portion and a rod body portion arranged on the plate body portion, the outer diameter of the plate body portion is larger than that of the rod body portion, the rod body portion is slidably accommodated in the guide hole, the inner cavity face of the second accommodating cavity is used for stopping and abutting against the plate body portion, and the free end of the rod body portion is used for abutting against the middle of the movable spring piece.
The electromagnet comprises an insulating framework, a yoke iron, an iron core, a coil and two power terminals, wherein the yoke iron, the iron core, the coil and the two power terminals are arranged on the insulating framework; the insulator is provided with two grooves, the insulating framework is provided with two protruding parts, and the two protruding parts are clamped and inserted on the insulator and are respectively positioned in the two grooves; the two power terminals are respectively arranged on the two protruding portions, two ends of the coil are respectively connected with the two power terminals in a guiding mode, the power terminals are provided with welding legs penetrating through the insulator, the welding legs and the welding legs are respectively located on two sides, far away from the insulator, of the insulator, the welding leg of the first terminal and the welding leg of the second terminal are respectively located on two ends, far away from the insulator, of the same side of the insulator, and the welding legs of the two power terminals are respectively located on two ends, far away from the insulator.
The yoke iron is provided with two third clamping parts, the insulator is provided with two third clamping grooves, the two third clamping parts are clamped and inserted with the insulator and are respectively positioned in the two third clamping grooves, and the push sheet is positioned between the two third clamping parts.
The armature is L-shaped, and the bent part of the armature is rotatably arranged at the other end of the yoke; the insulator is provided with a fourth clamping groove, the elastic piece is clamped and inserted in the insulator and is positioned in the fourth clamping groove, the elastic piece is provided with an elastic arm protruding into the second containing cavity, and the elastic arm is used for abutting against the turning part of the armature so that the bending part of the armature is pressed and held at the other end of the yoke.
Wherein, armature has first plate body, the second plate body of buckling from first plate body, and the one end of iron core is used for attracting first plate body, and the second plate body has first outer arc convex surface, and the kicking pad has the second outer arc convex surface of contradicting first outer arc convex surface.
The device comprises an insulator, a plastic shell and a push piece, wherein the plastic shell is detachably connected with the insulator and is provided with an accommodating cavity for accommodating the insulator, an electromagnet, a contact unit, an armature and the push piece; the side wall of the plastic shell is provided with air holes which are wavy and are communicated with the accommodating cavity.
Wherein, still include the closing plate, the plastic shell has the hole of stepping down with the bleeder vent intercommunication, and the bleeder vent is established from the outside surface of plastic shell and is formed by the concavity, and the hole of stepping down is established from the top surface of plastic shell and forms by the concavity, and the closing plate is located the hole of stepping down and is used for sealed hole of stepping down.
The invention has the beneficial effects that: the electromagnet and the contact unit are respectively accommodated in the first accommodating cavity and the second accommodating cavity which are isolated from each other, so that on one hand, the creepage distance between the electromagnet and the contact unit is increased, the short circuit damage between the electromagnet and the contact unit is avoided, and the use safety is improved; on the other hand, the electromagnet and the contact unit are separated, poor installation caused by touch interference of the electromagnet and the contact unit in the installation process is avoided, and the installation yield is improved.
Drawings
FIG. 1 is a schematic structural view of the insulator and the plastic shell of the present invention after being disassembled;
FIG. 2 is a schematic illustration of an explosive structure according to the present invention;
FIG. 3 is a schematic view of the structure of the insulator of the present invention;
fig. 4 is an enlarged view of a portion of the plastic shell of the present invention in cross-section.
The reference numerals include:
1-insulator 2-electromagnet 3-contact unit
4-armature 5-push plate 6-first chamber
7-second chamber 8-guide hole 9-first terminal
11-second terminal 12-movable reed 13-welding leg
14-stopper 15-stopper 16-plate body part
17-rod body part 18-sphere 19-insulating framework
21-yoke 22-coil 23-power supply terminal
24-projection 25-weld leg 26-spring
27-elastic arm 28-plastic shell 29-air hole
31-sealing plate.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.
Referring to fig. 1 to 4, an insulation isolation type clamping electromagnetic relay according to the present invention includes an insulator 1, an electromagnet 2 and a contact unit 3, wherein the electromagnet 2 is inserted into the insulator 1, and the contact unit 3 is driven to be turned on or off by the electromagnet 2.
The electromagnetic relay further comprises an armature 4 and a push sheet 5, the insulator 1 is provided with a first containing cavity 6, a second containing cavity 7 separated from the first containing cavity 6, and a guide hole 8 communicating the first containing cavity 6 with the second containing cavity 7, the first containing cavity 6 is positioned below the second containing cavity 7, the electromagnet 2 and the contact unit 3 are respectively positioned in the first containing cavity 6 and the second containing cavity 7, the armature 4 is movably arranged on the electromagnet 2 or/and the insulator 1, the push sheet 5 is movably arranged in the guide hole 8, and preferably, the push sheet 5 moves up and down in the guide hole 8. The electromagnet 2 is used for driving the armature 4 to move, and the moving armature 4 drives the contact unit 3 to be switched on or switched off through the push sheet 5.
By means of the structural design of the insulator 1, the electromagnet 2 and the contact unit 3 are respectively accommodated in the first accommodating cavity 6 and the second accommodating cavity 7 which are isolated from each other, so that on one hand, the creepage distance between the electromagnet 2 and the contact unit 3 is increased, the short circuit damage between the electromagnet 2 and the contact unit 3 is avoided, and the use safety is improved; on the other hand, the electromagnet 2 and the contact unit 3 are separated, so that the poor installation caused by touch interference in the installation process of the electromagnet and the contact unit is avoided, and the installation yield is improved.
The contact unit 3 includes a first terminal 9, a second terminal 11 and a movable spring 12, the first terminal 9 and the second terminal 11 have substantially the same structure, the first terminal 9 and the second terminal 11 both have a first holding portion and a solder leg 13 bent from the first holding portion and protruding out of the insulator 1, preferably, the first holding portion is flat, the solder leg 13 is straight, and the first holding portion and the solder leg 13 are arranged perpendicularly.
The insulator 1 is provided with two first clamping grooves, the contact unit 3 is located in the first accommodating cavity 6, the first clamping parts of the two terminals are clamped and inserted on the insulator 1 and located in the two first clamping grooves respectively, the first clamping part of the first terminal 9 is provided with a fixed contact, one end of the movable contact spring 12 is fixedly riveted on the first clamping part of the second terminal 11, the other end of the movable contact spring 12 is provided with a movable contact, the push piece 5 stretches into the first accommodating cavity 6 in a protruding mode and is used for abutting against the middle of the movable contact spring 12, and the movable contact is used for conducting or disconnecting the fixed contact.
The electromagnet 2 has magnetic force after being electrified, the armature 4 is attracted by the magnetic force of the electromagnet 2 to move the armature 4, and the moving armature 4 drives the movable spring 12 to elastically deform and move so that the moving contact of the movable spring 12 is contacted with and conducted with the static contact. When the electromagnet 2 loses power, the electromagnet 2 loses magnetic force and does not attract the armature 4 any more, and the movable spring 12 drives the push sheet 5 under the action of elastic restoring force to reset the armature 4, so that the movable contact is separated from the static contact and disconnected.
The electromagnet 2 further comprises a stopping part 14, the insulator 1 is provided with a second clamping groove, the stopping part 14 is provided with a second clamping part and a stopping part 15 arranged on the second clamping part, the second clamping part and the insulator 1 are clamped and inserted and are located in the second clamping groove, the stopping part 15 extends into the first accommodating cavity 6, the stopping part 15 is used for stopping the other end of the movable spring 12, and the other end of the movable spring 12 and the movable contact are located between the fixed contact and the stopping part 15.
When the electromagnet 2 loses power, the electromagnet 2 loses magnetic force and no longer attracts the armature 4, the movable contact spring 12 drives the movable contact to reset under the action of elastic force, and in the process of resetting the movable contact spring 12, the movable contact spring 12 is limited by the stopping part 15, so that the bad resetting caused by excessive movement of the movable contact spring 12 is prevented. The other end of the movable contact spring 12 is stopped by the stopper 15 and the first catching portion of the first terminal 9, so that the other end of the movable contact spring 12 moves in a precise area.
The push sheet 5 comprises a plate body part 16 and a rod body part 17 arranged on the plate body part 16, the push sheet 5 is made of insulating plastics, the plate body part 16 is a substantially rectangular flat plate, the outer diameter of the plate body part 16 is larger than that of the rod body part 17, the rod body part 17 is slidably accommodated in the guide hole 8, the inner cavity surface of the second accommodating cavity 7 is used for stopping and abutting against the plate body part 16, and the free end of the rod body part 17 is used for abutting against the middle part of the movable reed 12.
The skew of the lever portion 17 during the movement is prevented by guiding the moving direction of the lever portion 17 through the guide hole 8. The plate body 16 is stopped by the inner cavity side surface of the second cavity 7, so that the movement stroke of the plate body 16 is limited, and the plate body 16 is prevented from being excessively moved and is not used well.
In this embodiment, the rod portion 17 is provided with a rolling sphere 18, the sphere 18 protrudes out of the end surface of the free end of the rod portion 17, and the sphere 18 is pressed against the middle of the movable spring 12. When the electromagnet 2 drives the push sheet 5 through the armature 4 to move the movable spring 12, the abrasion between the movable spring and the movable spring is reduced by the arrangement of the rolling spherical body 18, so that the movable spring and the movable spring roll in two rows, and the influence of abrasive dust generated by sliding friction on the normal use of the contact unit 3 is avoided. Preferably, the spherical ball 18 is made of an insulating plastic.
The electromagnet 2 comprises an insulating framework 19 positioned in the second accommodating cavity 7, a yoke 21, an iron core, a coil 22 and two power terminals 23, wherein the yoke 21, the iron core, the coil 22 and the two power terminals 23 are arranged on the insulating framework 19, the coil 22 is arranged around the iron core, one end of the iron core is arranged at one end of the yoke 21, the other end of the iron core is used for attracting one end of the armature 4, the armature 4 is used for contacting the other end of the yoke 21 and the other end of the iron core, and the other end of the armature 4 acts on the push piece 5.
The two power terminals 23 are respectively disposed on the two protruding portions 24, preferably, the remaining power terminals 23 of the protruding portions 24 are injection molded together, two ends of the coil 22 are respectively connected to the two power terminals 23, the power terminals 23 have soldering legs 25 penetrating through the insulator 1, the soldering legs 13, 25 are respectively located at two sides of the insulator 1 far away from each other, the soldering legs 13, 13 of the first terminal 9 and the second terminal 11 are respectively located at two ends of the insulator 1 far away from each other at the same side, and the soldering legs 25 of the two power terminals 23 are respectively located at two ends of the insulator 1 far away from each other at the same side.
By means of the layout arrangement of the welding feet 13 of the first terminals 9, the welding feet 13 of the second terminals 11 and the welding legs 25 of the two power terminals 23, the insulator 1 is stably installed on an external circuit board, poor installation caused by shaking of the insulator 1 is avoided, and poor installation caused by uneven local stress of the insulator 1 is avoided.
The yoke 21 has two third clamping portions, the insulator 1 has two third clamping grooves, the two third clamping portions are clamped and inserted with the insulator 1 and respectively located in the two third clamping grooves, and the push piece 5 is located between the two third clamping portions. The electromagnet 2 is accurately and firmly installed on the insulator 1 by virtue of the insertion installation of the third clamping parts and the insulator 1, and the limit push piece 5 is blocked by virtue of the two third clamping parts, so that the push piece 5 moves along the correct direction, and the push piece 5 is prevented from being inclined in the moving process.
The magnetic iron further comprises an elastic piece 26, the armature 4 is L-shaped, and the bent part of the armature 4 is rotatably arranged at the other end of the yoke 21; the insulator 1 is provided with a fourth clamping groove, the elastic piece 26 is clamped and inserted in the insulator 1 and is positioned in the fourth clamping groove, the elastic piece 26 is formed by punching and bending a metal sheet, the elastic piece 26 is provided with an elastic arm 27 protruding into the second containing cavity 7, and the elastic arm 27 is used for abutting against the turning position of the armature 4 so as to press and hold the turning position of the armature 4 at the other end of the yoke 21.
When the electromagnet 2 is energized to generate a magnetic force, the magnetic force attracts the armature 4 to rotate the armature 4, and the rotating armature 4 elastically deforms the elastic arm 27. When the electromagnet 2 loses power, the electromagnet 2 picks up magnetic force, the armature 4 is driven to reset by the elastic restoring force of the movable spring 12 and the elastic restoring force of the elastic arm 27, the resetting efficiency of the armature 4 is improved, and the movable contact and the static contact are quickly separated and disconnected.
Armature 4 has the first plate body, from the second plate body of first plate body bending, and the one end of iron core is used for attracting the first plate body, and the second plate body has first outer arc convex surface, and push jack 5 has the second outer arc convex surface of contradicting first outer arc convex surface. When the armature iron 4 is rotated to drive the push sheet 5 to move, sliding friction between the two outer arc convex surfaces is converted into rolling friction by means of mutual interference of the two outer arc convex surfaces, abrasion and friction noise are reduced, the service lives of the two parts are prolonged, and the service performance of the electromagnetic relay is improved.
Still include plastic shell 28, plastic shell 28 and insulator 1 can be dismantled and be connected, and plastic shell 28 has and is used for holding the holding chamber of establishing insulator 1, electro-magnet 2, contact unit 3, armature 4, ejector pad 5, and the bottom surface pressure in holding chamber is held and is contradicted insulating skeleton 19 and make insulating skeleton 19 stabilize and peg graft on insulator 1, simplifies the mounting structure between insulator 1 and the insulating skeleton 19, promotes the packaging efficiency between them. The side wall of the plastic shell 28 is provided with air holes 29 which are communicated with the accommodating cavity, and the air holes 29 are wavy.
The ventilation holes penetrate through the side wall of the plastic shell 28, in the use process of the electromagnetic relay, the coil 22 of the electromagnet 2 generates heat to cause the temperature in the plastic shell 28 to rise, the volume of air in the plastic shell 28 expands to be discharged from the ventilation holes 29, and the plastic shell 28 is prevented from being cracked due to overlarge air pressure in the plastic shell 28. When outside water enters the air holes 29, the water is blocked and abutted by the wave crests of the air holes 29, so that the water is prevented from entering the accommodating cavity of the plastic shell 28, and the waterproof effect is realized. Preferably, a waterproof breathable film for covering the ventilation holes 29 is attached to the inner side surface of the accommodating cavity of the plastic shell 28, so that air can flow through the waterproof breathable film, and outside water cannot flow through the waterproof breathable film and enter the accommodating cavity of the plastic shell 28.
Still include closing plate 31, plastic shell 28 has the hole of stepping down with bleeder vent 29 intercommunication, and bleeder vent 29 is established from the outside surface of plastic shell 28 is concave and is formed, and the hole of stepping down is established from the top surface of plastic shell 28 is concave and is formed, and closing plate 31 is located the downthehole and be used for sealed hole of stepping down.
In the manufacturing process of the plastic shell 28, the first inserting core is inserted into the injection mold along the horizontal direction, the second inserting core is inserted into the injection mold along the vertical direction, then the injection mold is used for injection molding of the plastic shell 28, after the injection molding of the plastic shell 28, the first inserting core is laterally pulled, the second inserting core is vertically pulled, the second inserting core is pulled out to form a yielding hole, the manufacturing and processing of the air vent 29 are facilitated, and the manufacturing efficiency and the manufacturing yield of the plastic shell 28 are improved.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (10)
1. An insulation isolation type clamping type electromagnetic relay comprises an insulator, an electromagnet and a contact unit, wherein the electromagnet and the contact unit are clamped on the insulator; the method is characterized in that: the electromagnetic contactor also comprises an armature and a push sheet, wherein the insulator is provided with a first containing cavity, a second containing cavity separated from the first containing cavity and a guide hole communicated with the first containing cavity and the second containing cavity; the electromagnet is used for driving the armature to move, and the moving armature drives the contact unit to be switched on or switched off through the push sheet.
2. The insulation isolation type card-mounted electromagnetic relay according to claim 1, characterized in that: the contact unit comprises a first terminal, a second terminal and a movable contact spring, the terminal is provided with a first clamping part, a welding leg which is formed by bending the first clamping part and extends out of the insulator in a protruding mode, the insulator is provided with two first clamping grooves, the contact unit is located in the first containing cavity, the first clamping parts of the two terminals are clamped and inserted on the insulator and located in the two first clamping grooves respectively, the first clamping part of the first terminal is provided with a fixed contact, one end of the movable contact spring is arranged at the first clamping part of the second terminal, the other end of the movable contact spring is provided with a movable contact, the push sheet extends into the first containing cavity in a protruding mode and is used for abutting against the middle of the movable contact spring, and the movable contact is.
3. The insulation isolation type card-mounted electromagnetic relay according to claim 2, characterized in that: the insulator is provided with a second clamping groove, the stopper is provided with a second clamping part and a stopper part arranged on the second clamping part, the second clamping part is clamped and inserted with the insulator and is positioned in the second clamping groove, the stopper part extends into the first containing cavity and is used for stopping the other end of the movable spring, and the other end of the movable spring and the movable contact are both positioned between the static contact and the stopper part.
4. The insulation isolation type card-mounted electromagnetic relay according to claim 2, characterized in that: the pushing piece comprises a plate body part and a rod body part arranged on the plate body part, the outer diameter of the plate body part is larger than that of the rod body part, the rod body part is slidably accommodated in the guide hole, the inner cavity surface of the second accommodating cavity is used for stopping and abutting against the plate body part, and the free end of the rod body part is used for abutting against the middle part of the movable spring piece.
5. The insulation isolation type card-mounted electromagnetic relay according to claim 2, characterized in that: the electromagnet comprises an insulating framework, a yoke iron, an iron core, a coil and two power terminals, wherein the yoke iron, the iron core, the coil and the two power terminals are arranged on the insulating framework; the insulator is provided with two grooves, the insulating framework is provided with two protruding parts, and the two protruding parts are clamped and inserted on the insulator and are respectively positioned in the two grooves; the two power terminals are respectively arranged on the two protruding portions, two ends of the coil are respectively connected with the two power terminals in a guiding mode, the power terminals are provided with welding legs penetrating through the insulator, the welding legs and the welding legs are respectively located on two sides, far away from the insulator, of the insulator, the welding leg of the first terminal and the welding leg of the second terminal are respectively located on two ends, far away from the insulator, of the same side of the insulator, and the welding legs of the two power terminals are respectively located on two ends, far away from the insulator.
6. The insulation isolation type card-mounted electromagnetic relay according to claim 5, characterized in that: the yoke iron is provided with two third clamping parts, the insulator is provided with two third clamping grooves, the two third clamping parts are clamped and inserted with the insulator and are respectively positioned in the two third clamping grooves, and the push sheet is positioned between the two third clamping parts.
7. The insulation isolation type card-mounted electromagnetic relay according to claim 6, characterized in that: the armature is L-shaped, and the bent part of the armature is rotatably arranged at the other end of the yoke; the insulator is provided with a fourth clamping groove, the elastic piece is clamped and inserted in the insulator and is positioned in the fourth clamping groove, the elastic piece is provided with an elastic arm protruding into the second containing cavity, and the elastic arm is used for abutting against the turning part of the armature so that the bending part of the armature is pressed and held at the other end of the yoke.
8. The insulation isolated type card-mounted electromagnetic relay according to claim 7, characterized in that: the armature has a first plate body, a second plate body bent from the first plate body, one end of the iron core is used for attracting the first plate body, the second plate body has a first outer arc convex surface, and the push sheet has a second outer arc convex surface abutting against the first outer arc convex surface.
9. The insulation isolation type card-mounted electromagnetic relay according to claim 1, characterized in that: the plastic shell is detachably connected with the insulator and is provided with an accommodating cavity for accommodating the insulator, the electromagnet, the contact unit, the armature and the push sheet; the side wall of the plastic shell is provided with air holes which are wavy and are communicated with the accommodating cavity.
10. The insulation isolated type card-mounted electromagnetic relay according to claim 9, characterized in that: still include the closing plate, the plastic shell has the hole of stepping down with the bleeder vent intercommunication, and the bleeder vent is established from the outside surface of plastic shell is concave and is formed, and the hole of stepping down is established from the top surface of plastic shell is concave and is formed, and the closing plate is located the hole of stepping down and is used for sealed hole of stepping down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110169547.4A CN112786364A (en) | 2021-02-07 | 2021-02-07 | Insulated and isolated type clamping type electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110169547.4A CN112786364A (en) | 2021-02-07 | 2021-02-07 | Insulated and isolated type clamping type electromagnetic relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112786364A true CN112786364A (en) | 2021-05-11 |
Family
ID=75761268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110169547.4A Pending CN112786364A (en) | 2021-02-07 | 2021-02-07 | Insulated and isolated type clamping type electromagnetic relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112786364A (en) |
-
2021
- 2021-02-07 CN CN202110169547.4A patent/CN112786364A/en active Pending
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