CN212625452U - Permanent magnet release - Google Patents
Permanent magnet release Download PDFInfo
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- CN212625452U CN212625452U CN202021871445.4U CN202021871445U CN212625452U CN 212625452 U CN212625452 U CN 212625452U CN 202021871445 U CN202021871445 U CN 202021871445U CN 212625452 U CN212625452 U CN 212625452U
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- ejector rod
- iron core
- magnetic
- coil
- permanent magnet
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Abstract
The utility model discloses a permanent magnet release. The permanent magnet release is provided with a magnetic yoke, wherein a magnetism isolating plate is fixedly mounted at the top end of the magnetic yoke, an iron core assembly is arranged at the center of an inner cavity of the magnetic yoke, the iron core assembly comprises an iron core and an ejector rod guide sleeve which are arranged up and down, the ejector rod guide sleeve is fixedly mounted at the center of the bottom end of the magnetic yoke, an ejector rod is installed in the ejector rod guide sleeve, and a through hole convenient for ejecting the ejector rod is; the coil component is sleeved outside the iron core component and connected with the wire harness component, and the top end of the coil framework is provided with magnetic steel made of a permanent magnet material. The utility model has simple structure, under normal condition, the ejector rod is kept in the suction with the iron core under the suction effect of the magnetic steel; when current flows through the coil assembly, alternating magnetic flux phi is generated, when exciting current is large enough, the ejector rod is released to drive the mechanism to act, and the ejector rod guide sleeve plays a role in guiding the ejector rod; when surge voltage is generated in the circuit, the magnetic isolation plate can effectively shield an interference source, prevent error tripping and improve reliability.
Description
Technical Field
The utility model belongs to the technical field of the release technique and specifically relates to a permanent magnet release.
Background
The release is used for cooperating with the earth leakage protector, the vector sum of the current passing through the zero sequence current mutual inductor is not equal to zero when the circuit has electric leakage or human body electric shock, two sides of the secondary coil of the mutual inductor generate voltage, the voltage is amplified by the integrated circuit, and when the set value is reached, the power supply is cut off in 0.1 second by the earth leakage release, so that the electric shock and the electric leakage protection are realized. The surge is also called a surge, which is an instantaneous overvoltage exceeding a normal voltage, generally refers to a large current caused by a high voltage which appears in a power grid in a short time like a 'wave', and can cause misoperation of electronic equipment; damage to power supply equipment and expensive computers and various hardware equipment causes direct economic loss. The existing tripping device mostly adopts a high-voltage electromagnet, and the misoperation of the electromagnet is easy to occur under higher surge voltage, so that the switch trips.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a permanent magnet release.
The utility model provides a technical scheme that its technical problem adopted is: a permanent magnet release comprises a magnetic yoke, wherein a magnetism isolating plate is fixedly mounted at the top end of the magnetic yoke, an iron core assembly is arranged at the center of an inner cavity of the magnetic yoke, the iron core assembly comprises an iron core and an ejector rod guide sleeve which are arranged up and down, the ejector rod guide sleeve is fixedly mounted at the center of the bottom end of the magnetic yoke, an ejector rod is installed in the ejector rod guide sleeve, and a through hole convenient for ejecting the ejector rod is formed in; the coil assembly is sleeved outside the iron core assembly and connected with a wire harness assembly extending out of the magnetic yoke, the coil assembly comprises a coil framework sleeved outside the iron core assembly, an enameled coil is wound on the coil framework, an adhesive tape wraps the enameled coil, and the top end of the coil framework is provided with magnetic steel made of permanent magnetic materials. The magnetic isolation plate has strong anti-electronic interference characteristic and can effectively shield an external interference source.
Further, wire harness assembly includes first lead wire and second lead wire, and the one end of first lead wire and second lead wire all is connected with the enameled coil, and the draw-in groove of plastic terminal is all gone into to the other end of first lead wire and second lead wire.
Furthermore, the first lead and the second lead are clamped into one end of the plastic terminal clamping groove and are formed by metal terminal prepressing.
Furthermore, the number of the magnetic steels is two, and the two magnetic steels are arranged oppositely to enable the directions of the magnetic fields to be consistent.
Furthermore, the center of the magnetism isolating plate is provided with a mounting hole for mounting the iron core.
Furthermore, the number of the enameled coils is 115 turns, and the wire diameter of the enameled wire is 0.355 mm.
The utility model has the advantages that: the utility model has simple structure, reasonable design and simple and convenient operation, and under the normal condition, the ejector rod is kept in the suction with the iron core under the suction effect of the magnetic steel; when current flows through the coil assembly, alternating magnetic flux phi is generated, the direction of phi with a half cycle is opposite to the direction of direct current magnetic flux, the attraction of the magnetic steel is partially offset, when the exciting current is large enough, the ejector rod is released to drive the mechanism to act, and the ejector rod guide sleeve plays a role in guiding the ejector rod; when surge voltage is generated in the circuit, the magnetic isolation plate can effectively shield an interference source, prevent error tripping and improve reliability.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. the magnetic coil comprises a magnetic yoke, 2 parts of a coil assembly, 2-1 parts of an enameled wire, 2-2 parts of an adhesive tape, 2-3 parts of a coil framework, 3 parts of a magnetic isolation plate, 4 parts of a push rod, 5 parts of magnetic steel, 6 parts of a push rod guide sleeve, 7 parts of a wire harness assembly, 7-1 parts of a metal terminal, 7-2 parts of a plastic terminal, 7-3 parts of a first lead, 7-4 parts of a second lead and 8 parts of an iron core.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The permanent magnet release shown in fig. 1 comprises a magnet yoke 1 serving as a shell, wherein a magnetism isolating plate 3 is installed at the top end of the magnet yoke 1 through an integrated riveting process, an iron core assembly is arranged at the center of an inner cavity of the magnet yoke 1 and comprises an iron core 8 and an ejector rod guide sleeve 6 which are arranged up and down, the ejector rod guide sleeve 6 is riveted at the center of the bottom end of the magnet yoke 1, an ejector rod 4 is installed in the ejector rod guide sleeve 6, and a through hole convenient for ejecting the ejector rod 4 is formed in the bottom end of; the coil component 2 is sleeved outside the iron core component, the coil component 2 is connected with a wire harness component 7 extending out of the magnet yoke 1, the coil component 2 comprises a coil framework 2-3 sleeved outside the iron core component, an enameled coil 2-1 is wound on the coil framework 2-3, an adhesive tape 2-2 is wrapped outside the enameled coil 2-1, and the top end of the coil framework 2-3 is provided with magnetic steel 5 made of a permanent magnetic material. The adhesive tape 2-2 is made of high-temperature resistant adhesive tape, and the ejector rod guide sleeve 6 is an iron core guide sleeve.
The center of the magnetism isolating plate 3 is provided with a mounting hole for mounting the iron core 8, the number of the magnetic steels 5 is two, the two magnetic steels 5 are oppositely arranged, the number of the bundles of the enameled coils 2-1 is 115, and the wire diameter of the enameled wire is 0.355 mm.
The wire harness assembly 7 comprises a first lead 7-3 and a second lead 7-4, one end of the first lead 7-3 and one end of the second lead 7-4 are both connected with the enameled coil 2-1, the other end of the first lead 7-3 and the other end of the second lead 7-4 are both formed by pre-pressing a metal terminal 7-1, and the metal terminal 7-1 is clamped into a clamping groove of the plastic terminal 7-2.
Under normal conditions, the ejector rod 4 is kept in suction with the iron core 8 under the suction effect of the magnetic steel 5; when current flows through the coil assembly 2, alternating magnetic flux phi is generated, the direction of phi with a half cycle is opposite to the direction of direct current magnetic flux, the attraction of the magnetic steel 5 is partially offset, when the exciting current is large enough, the ejector rod 4 is released to drive the mechanism to act, and the ejector rod guide sleeve 6 plays a role in guiding the ejector rod 4.
The permanent magnet release comprises the following specific installation steps:
(1) riveting the ejector rod guide sleeve 6 on the magnetic yoke 1;
(2) the coil assembly 2 is arranged in the magnetic yoke;
(3) placing two pieces of magnetic steel 5 on the top of the coil assembly 2;
(4) placing the magnetism isolating plate 3 at the opening at the top end of the magnetic yoke 1, and prepressing and fixing the magnetism isolating plate 3 by a riveting machine;
(5) and an iron core 8 is arranged, and the ejector rod guide sleeve 6 is inserted into the ejector rod 4.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (6)
1. A permanent magnet release is characterized in that: the magnetic separation device is provided with a magnetic yoke (1), a magnetic separation plate (3) is fixedly installed at the top end of the magnetic yoke (1), an iron core assembly is arranged at the center of an inner cavity of the magnetic yoke (1), the iron core assembly comprises an iron core (8) and an ejector rod guide sleeve (6) which are arranged up and down, the ejector rod guide sleeve (6) is fixedly installed at the center of the bottom end of the magnetic yoke (1), an ejector rod (4) is installed in the ejector rod guide sleeve (6), and a through hole convenient for the ejector rod (4) to; the coil assembly (2) is sleeved outside the iron core assembly, the coil assembly (2) is connected with a wire harness assembly (7) extending out of the magnet yoke (1), the coil assembly (2) comprises a coil framework (2-3) sleeved outside the iron core assembly, an enameled coil (2-1) is wound on the coil framework (2-3), an adhesive tape (2-2) is wrapped outside the enameled coil (2-1), and magnetic steel (5) made of permanent magnetic materials is arranged at the top end of the coil framework (2-3).
2. The permanent magnet trip unit of claim 1, wherein: the wire harness assembly (7) comprises a first lead (7-3) and a second lead (7-4), one end of the first lead (7-3) and one end of the second lead (7-4) are both connected with the enameled coil (2-1), and the other end of the first lead (7-3) and the other end of the second lead (7-4) are both clamped into a clamping groove of the plastic terminal (7-2).
3. The permanent magnet trip unit of claim 2, wherein: one end of the first lead (7-3) and one end of the second lead (7-4) clamped into the clamping groove of the plastic terminal (7-2) are both formed by prepressing the metal terminal (7-1).
4. The permanent magnet trip unit of claim 1, wherein: the magnetic steel (5) is two in number, and the two magnetic steels (5) are arranged oppositely.
5. The permanent magnet trip unit of claim 1, wherein: and the center of the magnetism isolating plate (3) is provided with a mounting hole for mounting the iron core (8).
6. The permanent magnet trip unit of claim 1, wherein: the number of the enameled coils (2-1) is 115 turns, and the wire diameter of the enameled wire is 0.355 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871445.4U CN212625452U (en) | 2020-08-31 | 2020-08-31 | Permanent magnet release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021871445.4U CN212625452U (en) | 2020-08-31 | 2020-08-31 | Permanent magnet release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212625452U true CN212625452U (en) | 2021-02-26 |
Family
ID=74704099
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021871445.4U Active CN212625452U (en) | 2020-08-31 | 2020-08-31 | Permanent magnet release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212625452U (en) |
-
2020
- 2020-08-31 CN CN202021871445.4U patent/CN212625452U/en active Active
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