CN203733734U - Magnetic circuit structure of electromagnetic release - Google Patents
Magnetic circuit structure of electromagnetic release Download PDFInfo
- Publication number
- CN203733734U CN203733734U CN201320856101.XU CN201320856101U CN203733734U CN 203733734 U CN203733734 U CN 203733734U CN 201320856101 U CN201320856101 U CN 201320856101U CN 203733734 U CN203733734 U CN 203733734U
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- CN
- China
- Prior art keywords
- yoke
- notch
- permanent magnet
- spring
- sidewall
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- Withdrawn - After Issue
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Abstract
A magnetic circuit structure of an electromagnetic release which is characterized in that: the magnetic circuit structure of the electromagnetic release comprises a U-shaped magnet yoke; at least one permanent magnet is disposed in a rabbet of the magnet yoke; a front baffle plate and a spring support are respectively fixed on the inner and outer sides of the magnet yoke sidewall having the rabbet; two protrusions are arranged on one side surface of the spring support and the side surface is close to the magnet yoke; the protrusions extend into the rabbet to locate at two sides of the permanent magnet to make the permanent magnet keep a gap from the rabbet sidewall of the magnet yoke; a loading coil passes through a cylindrical sidewall on the other side of the magnet yoke; one end of an armature is disposed on the cylindrical sidewall of the magnet yoke, and the other end is disposed on the magnet yoke sidewall having the rabbet; and the bottom of a spring is fixed on the spring support, and the upper end of the spring is fixed on the armature. The magnetic circuit structure can maintain external magnetic source is unacted on the magnet in the electromagnetic release. The magnetic property can be maintained stably. Therefore, the release stability of the electromagnetic release is improved, the structure of the electromagnetic release is simplified, and the security of a breaker is enhanced.
Description
Technical field
The utility model belongs to breaker technical field, particularly a kind of circuit breaker electric magnetic release magnetic structure.
Background technology
Circuit breaker is divided into primary cut-out and low-voltage circuit breaker by its scope of application.Low-voltage circuit breaker claims again automatic switch, is commonly called as " air switch " and also refers to low-voltage circuit breaker, and it is a kind of existing hand switch effect, can automatically carry out again decompression, under-voltage, overload and the electrical equipment of short-circuit protection.It can be used to distribute electric energy; do not start continually asynchronous motor; power circuit and motor etc. are carried out to protection; can automatic shutdown circuit when serious overload or short circuit and the fault such as under-voltage occur for they; its function is equivalent to the combination of Fuse switch and mistake underheat relay etc.; and after disjunction fault current, generally do not need to change parts, obtain a wide range of applications.
Circuit breaker is realized its required protective feature by release is installed, its operation principle is: if there is short circuit current or electric shock leakage current over the ground in control circuit, and while reaching breaker protection grade, the electronics magnetizing coil of release is after obtaining enough voltage, thereby in the original suction of sealing of release and magnetic circuit, produced with the magnetic field of permanent magnet opposite direction and offset the magnetic field intensity that permanent magnet produces, now the thrust spring in compressive state discharges and ejects, push rod is shifted onto, the power that push rod is released triggers shunt release and line disconnection, protected line security.In the release course of work, be to utilize electromagnet principle to realize short circuit or earth leakage protective.Electromagnetic leakage protective device is widely used because of plurality of advantages such as working stability are reliable, tripping characteristic is not subject to that line voltage affects; the core devices of electromagnetic leakage protective device is magnetictrip; the magnetic parameter of magnetictrip is directly determining the power of earth leakage protective characteristic, so the stable shape of magnetictrip tripping characteristic is most important for the quality of circuit breaker.On market, the permanent magnet material of general magnetic release adopts aluminium nickel cobalt mostly now, but the main feature of aluminium nickel cobalt belongs to the permanent magnetic material of high remanent magnetism, low-coercivity, when having additional excitation source, magnetic property is unstable, and very high to size susceptibility, generally need to repeatedly fill demagnetization operation to permanent magnet, can guarantee the stable of permanent magnet retention.
Utility model content
The purpose of this utility model is in the magnetic structure for current magnetictrip, need to repeatedly fill to the permanent magnet in magnetic circuit the technological deficiency of demagnetization operation, a kind of magnetictrip magnetic structure is provided, can keep magnet in magnetictrip not affected by outside magnetic source, keep stable magnetic property always, improve the dropout stability of release, simplified the structure of release, strengthened the fail safe of circuit breaker.
Technical scheme
In order to realize above-mentioned technical purpose, the utility model designs a kind of magnetictrip magnetic structure, it is characterized in that: it comprises yoke, permanent magnet, front apron, spring support, loading coil, armature and spring, on one side arm of described yoke, have a notch, at least one block of permanent magnet is placed in the notch of yoke, front apron and spring support are separately fixed on the inside and outside two sides of the yoke sidewall that has notch, spring support is close to yoke one side and is provided with two projections, projection puts in notch and is positioned at permanent magnet both sides, make to keep gap between permanent magnet and yoke pocket side wall, loading coil is through yoke opposite side cylindrical side wall, armature one end is placed in the cylindrical side wall of yoke, the other end is placed on the yoke sidewall that has notch, spring bottom is fixed on spring support, spring upper end is fixed on armature.
Further, the height of described permanent magnet is lower than the degree of depth of notch, and the gap between permanent magnet and pocket side wall is greater than the gap between permanent magnet and armature.
Further, described loading coil is fixed in yoke 1 by the buckle of bottom.
Further, described armature stretches out the breach on spring support in the one end having on the yoke sidewall of notch, has spring mounting hole on extension.
Further, described spring support is L shaped, and bottom has spring mounting hole, and spring one end hangs in spring mounting hole.
Further, described front apron, spring support and yoke are fixed together by rivet.
Further, described yoke is U-shaped, has a notch on a side arm.
Further, described projection is arranged on the side that front apron is adjacent to yoke, and projection puts in notch and is positioned at permanent magnet both sides, makes to keep gap between permanent magnet and yoke pocket side wall.
Beneficial effect
The utility model embeds permanent magnet between yoke and the closed-loop of armature formation, and respectively and between the sidewall of yoke and armature, leave suitable gap, total can keep magnet in magnetictrip not affected by outside magnetic source, keep stable magnetic property always, improved the dropout stability of release, simplify the structure of release, strengthened the fail safe of circuit breaker.
Accompanying drawing explanation
Accompanying drawing 1 is that the utility model the first embodiment plants product structure schematic diagram.
Accompanying drawing 2 is exploded views of the utility model the first embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
Embodiment 1
As shown in attached Fig. 1 and 2, a kind of magnetictrip magnetic structure, it is characterized in that: it comprises yoke 1, permanent magnet 2, front apron 3, spring support 4, loading coil 5, described in armature 6 and spring 7, on a side arm of yoke 1, have a notch 101, at least one block of permanent magnet 2 is placed in the notch 101 of yoke 1, front apron 3 and spring support 4 are separately fixed on the inside and outside two sides of yoke 1 sidewall that has notch 101, spring support 4 is close to yoke 1 one sides and is provided with two projections 401, projection 401 puts in notch 101 and is positioned at permanent magnet 2 both sides, make to keep gap between permanent magnet 2 and yoke 1 notch 101 sidewalls, loading coil 5 is through yoke 1 opposite side cylindrical side wall, armature 6 one end are placed in the cylindrical side wall of yoke 1, the other end is placed on yoke 1 sidewall that has notch 101, spring 7 bottoms are fixed on spring support 4, spring 7 upper ends are fixed on armature 6.
The height of described permanent magnet 2 is lower than the degree of depth of notch 101, and the gap between permanent magnet 2 and notch 101 sidewalls is greater than the gap between permanent magnet 2 and armature 6.
Described loading coil 5 is fixed in yoke 1 by the buckle 501 of bottom.
Described armature 6 stretches out the breach 402 on spring support 4 in the one end having on yoke 1 sidewall of notch 101, has spring mounting hole on extension.
Described spring support 4 is L shaped, and bottom has spring mounting hole, and spring 7 one end hang in spring mounting hole.
Described front apron 3, spring support 4 and yoke 1 are fixed together by rivet 8.
Described yoke 1 is U-shaped, has a notch 101 on a side arm.
Embodiment 2
Projection described in the utility model 401 can also be arranged on the side that front apron 3 is adjacent to yoke 1, and projection 401 puts in notch 101 and is positioned at permanent magnet 2 both sides, makes to keep gap between permanent magnet 2 and yoke 1 notch 101 sidewalls.
The loading coil 5 of electromagnetic leakage tripping device is directly connected with the output of creepage mutual inductor secondary, and electric leakage signal directly drives release work.Normal condition armature 6 is pull-in on yoke 1 working face under the effect of magnetic attraction; when having electric leakage signal; loading coil 5 produces the magnetic field with permanent magnet 2 opposite directions; when electric leakage signal reaches preset value; the adhesive magnetic torque that the magnetic field that loading coil 5 produces produces permanent magnet 2 slackens and is not enough to overcome the countertorque that spring 7 produces; and armature 6 is discharged; thereby lead agency makes protective device tripping operation; disengagement failure circuit; and mechanism can reset to release, even if release is got back to closure state.
The utility model embeds permanent magnet between yoke and the closed-loop of armature formation, and respectively and between the sidewall of yoke and armature, leave suitable gap, total can keep magnet in magnetictrip not affected by outside magnetic source, keep stable magnetic property always, improved the dropout stability of release, simplify the structure of release, strengthened the fail safe of circuit breaker.
Claims (8)
1. a magnetictrip magnetic structure, it is characterized in that: it comprises yoke (1), permanent magnet (2), front apron (3), spring support (4), loading coil (5), armature (6) and spring (7), on described yoke (1) one side arm, have a notch (101), at least one block of permanent magnet (2) is placed in the notch (101) of yoke (1), front apron (3) and spring support (4) are separately fixed on the inside and outside two sides of yoke (1) sidewall that has notch (101), spring support (4) is close to yoke (1) one side and is provided with two projections (401), projection (401) puts in notch (101) and is positioned at permanent magnet (2) both sides, make to keep gap between permanent magnet (2) and yoke (1) notch (101) sidewall, loading coil (5) is through yoke (1) opposite side cylindrical side wall, armature (6) one end is placed in the cylindrical side wall of yoke (1), the other end is placed on yoke (1) sidewall that has notch (101), spring (7) bottom is fixed on spring support (4), spring (7) upper end is fixed on armature (6).
2. a kind of magnetictrip magnetic structure as claimed in claim 1, it is characterized in that: the height of described permanent magnet (2) is lower than the degree of depth of notch (101), and the gap between permanent magnet (2) and notch (101) sidewall is greater than the gap between permanent magnet (2) and armature (6).
3. a kind of magnetictrip magnetic structure as claimed in claim 1, is characterized in that: described loading coil (5) is fixed in yoke (1) by the buckle (501) of bottom.
4. a kind of magnetictrip magnetic structure as claimed in claim 1, it is characterized in that: described armature (6) stretches out the breach (402) on spring support (4) in the one end having on yoke (1) sidewall of notch (101), has spring mounting hole on extension.
5. a kind of magnetictrip magnetic structure as claimed in claim 1, is characterized in that: described spring support (4) is for L shaped, and bottom has spring mounting hole, and spring (7) one end hangs in spring mounting hole.
6. a kind of magnetictrip magnetic structure as claimed in claim 1, is characterized in that: described front apron (3), spring support (4) and yoke (1) are fixed together by rivet.
7. a kind of magnetictrip magnetic structure as claimed in claim 1, is characterized in that: described yoke (1) is U-shaped, has a notch (101) on a side arm.
8. a kind of magnetictrip magnetic structure as claimed in claim 1, it is characterized in that: described projection (401) is arranged on the side that front apron (3) is adjacent to yoke (1), projection (401) puts in notch (101) and is positioned at permanent magnet (2) both sides, makes to keep gap between permanent magnet (2) and yoke (1) notch (101) sidewall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856101.XU CN203733734U (en) | 2013-12-23 | 2013-12-23 | Magnetic circuit structure of electromagnetic release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320856101.XU CN203733734U (en) | 2013-12-23 | 2013-12-23 | Magnetic circuit structure of electromagnetic release |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203733734U true CN203733734U (en) | 2014-07-23 |
Family
ID=51203785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320856101.XU Withdrawn - After Issue CN203733734U (en) | 2013-12-23 | 2013-12-23 | Magnetic circuit structure of electromagnetic release |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203733734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839735A (en) * | 2013-12-23 | 2014-06-04 | 上海良信电器股份有限公司 | Magnetic circuit structure of magnetic trip |
-
2013
- 2013-12-23 CN CN201320856101.XU patent/CN203733734U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103839735A (en) * | 2013-12-23 | 2014-06-04 | 上海良信电器股份有限公司 | Magnetic circuit structure of magnetic trip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140723 Effective date of abandoning: 20160817 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |