CN216389245U

CN216389245U - Electromagnetic release

Info

Publication number: CN216389245U
Application number: CN202123243149.7U
Authority: CN
Inventors: 邱文辉; 黄春阳; 夏燕涛; 胡伊达
Original assignee: Zhejiang Xincheng Electric Co ltd
Current assignee: Zhejiang Xincheng Electric Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-04-26
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses an electromagnetic release with high sensitivity, high reliability, long service life and low power consumption. The technical scheme adopted comprises the following steps: the coil assembly mainly comprises a coil framework and a winding lead terminal arranged on the coil framework; the yoke assembly is vertically arranged on one side of the coil framework, is formed by overlapping and welding a first yoke and a second yoke, a magnet mounting opening is formed between the tail parts of the first yoke and the second yoke, a main pole shoe surface extending out of the upper end of a winding post of the coil framework is arranged on the first yoke, and an auxiliary pole shoe surface extending out of one side of the upper end of the coil framework, which corresponds to the main pole shoe surface, is arranged on the second yoke.

Description

Electromagnetic release

Technical Field

The utility model relates to an electromagnetic release.

Background

Currently, existing electromagnetic release structures, such as: the chinese utility model patent publication No. CN113257642A, entitled "electromagnetic release" or publication No. CN113223904A, "electromagnetic release and electrical protection device including the same" shows that it is mainly composed of U-shaped yoke, armature, tension spring, coil, push rod, magnetic steel, and shell. When the residual leakage current reaches a certain value, the locking mechanism is released. But the tripping sensitivity is low, the reliability is low, the service life is short due to the structural limitation, the problems of insensitive, unstable and short service life of tripping are caused to the electric leakage circuit-breaking electric appliance, and people are easy to get an electric shock and the whole electric leakage circuit-breaking electric appliance is easy to fail prematurely. In addition, the existing electromagnetic release has the disadvantages of complex structure, large volume, high power consumption and poor stability.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electromagnetic release with high sensitivity, high reliability, long service life and low power consumption.

In order to solve the above problems, the technical scheme adopted by the utility model comprises:

the coil assembly mainly comprises a coil framework and a winding lead terminal arranged on the coil framework;

the yoke assembly is vertically arranged on one side of the coil framework, is formed by overlapping and welding a first yoke and a second yoke, and a magnet mounting opening is formed between the tail parts of the yoke assembly;

the armature is movably arranged at the upper end of the coil framework and is in contact with the main pole shoe surface and the auxiliary pole shoe surface to form a closed magnetic conduction loop;

the magnet is arranged in the magnet mounting opening of the yoke iron assembly and provides magnetic force for keeping the armature and the main pole shoe surface and the auxiliary pole shoe surface in a fit state;

and the elastic body is connected with the armature and provides elastic force for the armature to separate from the main pole shoe surface and the auxiliary pole shoe surface.

The electromagnetic release is characterized in that: the magnet mounting opening is formed by bending the tail parts of the first yoke and the second yoke, the magnet mounting opening is in a V shape, and the magnet is adapted to the V shape.

The electromagnetic release is characterized in that: coil skeleton upper end is equipped with the armature mounting groove, the oral area in armature mounting groove is equipped with and supports the bellying, armature is installed in the armature mounting groove, and the rear end erects support on the bellying.

The electromagnetic release is characterized in that: the elastic body is a double torsion spring and is arranged on the installation shafts at two sides of the upper end of the coil framework, and the middle force arm presses the end part of the armature.

The electromagnetic release is characterized in that: and positioning openings are formed at the bottoms of the first yoke iron and the second yoke iron.

The electromagnetic release is characterized in that: the coil framework bottom is equipped with the yoke mounting groove, first yoke, second yoke bottom front end are installed in the yoke mounting groove.

The electromagnetic release is characterized in that: the coil component, the yoke component, the armature, the magnet and the elastomer are accommodated in an inner cavity of the lower shell, and a movable push rod is arranged in the upper shell.

The electromagnetic release is characterized in that: and a first positioning groove for positioning the magnet mounting openings of the first yoke and the second yoke is arranged in the lower shell.

The electromagnetic release is characterized in that: the both sides of casing down be equipped with the second constant head tank location complex reference column of coil skeleton both sides, the casing bottom is equipped with down and is used for right the location flange that the location mouth of first yoke, second yoke bottom advances line location.

The electromagnetic release is characterized in that: the lower shell is connected with the hanging grooves in two sides of the coil framework in a hanging mode through hooks in two sides.

The electromagnetic release has the advantages that:

1. the structure is simple and compact, and the path of the magnetic latching closed magnetic conduction loop is short, so that the magnetic property loss of the magnetic latching closed magnetic conduction loop is reduced, the magnetic property of the magnetic latching closed magnetic conduction loop is enhanced, and the sensitivity and the reliability of the electromagnetic trip are improved;

2. the yoke assembly is formed by welding two pieces of yoke after being overlapped by adopting a laser beam fusion welding process, the yoke with the structure can further reduce the magnetic property loss of the magnetic latching closed magnetic conductive loop, and simultaneously enhances the magnetic property of the magnetic latching closed magnetic conductive loop, thereby further improving the sensitivity and reliability of the electromagnetic trip;

3. the tail part of the yoke assembly is provided with the V-shaped magnet installation opening which can be tightly attached to the magnet with the trapezoidal cross section, the structure further reduces the magnetic property loss of the magnetic latching closed magnetic conduction loop, and simultaneously enhances the magnetic property of the magnetic latching closed magnetic conduction loop, thereby further improving the sensitivity and reliability of the electromagnetic trip;

4. the yoke component is provided with a front main pole shoe surface and a rear auxiliary pole shoe surface to form a bipolar shoe surface structure, so that the area of a pole shoe of the magnetic latching closed magnetic conduction loop is increased, the yoke of the structure can further reduce the magnetic performance loss of the magnetic latching closed magnetic conduction loop, and simultaneously enhance the magnetic performance of the magnetic latching closed magnetic conduction loop, thereby further improving the sensitivity and reliability of the electromagnetic trip device;

5. the armature, the torsion spring and the supporting bulge part are combined to form a suspended armature structure, the armature action friction force is small, the torsion force is large, when a magnetic latching closed magnetic conduction loop is opened, the action sensitivity is high, the reliability is high, and the pushing force for jacking the push rod is large;

6. the coil assembly is vertically arranged, so that the magnetic performance of an electromagnetic system is improved, and the power consumption of the electromagnetic system is reduced, thereby further improving the sensitivity and reliability of the electromagnetic release.

Drawings

FIG. 1 is a cross-sectional view of an electromagnetic release of the present invention;

FIG. 2 is an exploded view of the electromagnetic release of the present invention;

FIG. 3 is a schematic view of the assembly between the coil assembly, yoke assembly, armature, magnet and elastomer of the present invention;

FIG. 4 is a schematic diagram of the construction of the bobbin of the present invention;

FIG. 5 is a schematic view of the construction of the yoke assembly of the present invention;

FIG. 6 is a schematic structural view of the double torsion spring of the present invention;

FIG. 7 is a schematic view of the construction of the lower housing of the present invention;

fig. 8 is a schematic view of the construction of the armature of the present invention.

Detailed Description

Referring to fig. 1-8, an electromagnetic release of the present invention comprises: coil assembly 1, yoke assembly 2, armature 3, magnet 4 and elastomer 5. The coil component 1 mainly comprises a coil framework 6 and a winding lead terminal 7 arranged on the coil framework 6, wherein a lead is wound on a winding post 11 of the coil framework 6, and a leading-out end of the lead is welded with the winding lead terminal 7. The yoke assembly 2 is vertically arranged on one side of the coil framework 6, and the yoke assembly 2 is formed by overlapping a first sheet yoke 8 and a second sheet yoke 9 and then welding the first sheet yoke and the second sheet yoke ideally by adopting a laser beam fusion welding process. And a magnet mounting opening 10 is formed between the end portions of the first and second yokes 8, 9. The optimal magnet installation opening 10 structure is in a V shape formed by bending the tail parts of the first yoke iron 8 and the second yoke iron 9 outwards. The magnet 4 is fixed in the magnet mounting opening 10 and provides magnetic force for keeping the armature 3 in a fit state with the main pole shoe surface 12 and the auxiliary pole shoe surface 13. Most preferably, the magnet 4 is a permanent magnet and has a trapezoidal structure adapted to the V-shaped structure, and the magnet 4 is welded and fixed to the magnet mounting opening 10 after being tightly attached. The first yoke 8 is provided with a main pole shoe surface 12 extending from the upper end of a winding post 11 of the coil bobbin 6, and the second yoke 9 is provided with an auxiliary pole shoe surface 13 extending from one side of the upper end of the coil bobbin 6. The armature 3 is a flat strip-shaped structure and is movably arranged at the upper end of the coil framework 6, and the armature 3 is in contact with the main pole shoe surface 12 and the auxiliary pole shoe surface 13 to form a closed magnetic conduction loop. The elastic body 5 is connected with the armature 3 and provides elastic force for separating the armature 3 from the main pole shoe surface 12 and the auxiliary pole shoe surface 13. After the structure is adopted, when the value of the residual current flowing through the winding lead terminal reaches a certain value, the magnetic torque generated by the coil is larger than the magnetic torque of a magnetic latching closed magnetic circuit formed by the magnet, the yoke assembly, the armature and the elastomer, the magnetic latching magnetic circuit is opened, the armature jacks up the push rod, and the push rod drives the circuit breaker locking mechanism to release, so that the purpose of tripping the whole leakage circuit breaker electrical appliance product is achieved.

Preferably, the upper end of the coil framework 6 is provided with an armature installation groove 14, the opening of the armature installation groove 14 is provided with a supporting convex part 15, the armature 3 is installed in the armature installation groove 14, and the rear end is erected on the supporting convex part 15. The support protrusion 15 is ideally made of a magnetic conductive material (the same as the yoke material), and is welded and fixed to the first yoke 8 and the second yoke 9. The support protrusion 15 may be an extension of the upper ends of the first and second yokes 8 and 9.

Preferably, the elastic body 5 is a double torsion spring and is mounted on a mounting shaft 16 on both sides of the upper end of the coil frame 6, and a middle force arm 17 thereof presses the end of the armature 3. In order to improve the stability of the elastic body 5, the middle force arm 17 is arranged in a torsion spring positioning groove 31 at the end part of the armature 3. The elastic body 5 adopts a double torsion spring and is arranged on the mounting shaft at the upper end of the coil framework, so that the structure is stable, the space is not occupied, and the product is more compact.

Preferably, the bottom of the first yoke iron 8 and the second yoke iron 9 is provided with a positioning opening 18. Through the positioning matching of the positioning opening 18 and the installation body, the structure of the first yoke 8 and the second yoke 9 after installation is more stable.

Preferably, a yoke mounting groove 19 is formed in the bottom of the coil bobbin 6, and the front ends of the bottoms of the first yoke 8 and the second yoke 9 are mounted in the yoke mounting groove 19. The coil framework 6 is assembled with the first yoke 8 and the second yoke 9 through the yoke mounting grooves 19, so that the structure of the first yoke 8 and the second yoke 9 is more stable and compact after being mounted.

Preferably, the magnetic coil further comprises a housing 20, the housing 20 is composed of a lower housing 21 and an upper housing 22 which are butted, the coil assembly 1, the yoke assembly 2, the armature 3, the magnet 4 and the elastic body 5 are accommodated in an inner cavity of the lower housing 21, and a movable push rod 23 is arranged in the upper housing 22. Through casing 20 assembly back for this electromagnetic trip ware forms an independent product, can be applied to on mechanisms such as residual current leakage circuit breaker, residual current leakage socket, residual current leakage protection switch, residual current leakage protection device, residual current leakage protection mechanism. When the housing is not required, the coil assembly 1, the yoke assembly 2, the armature 3, the magnet 4, the elastic body 5, and the like may be directly accommodated in the housing of the application object.

Preferably, a first positioning groove 24 for positioning the magnet mounting openings 10 of the first and second yokes 8 and 9 is provided in the lower case 21. And positioning columns 26 which are matched with the second positioning grooves 25 at the two sides of the coil framework 6 in a positioning manner are arranged at the two sides of the lower shell 21, and positioning flanges 30 which are used for positioning the positioning holes 18 at the bottoms of the first yoke 8 and the second yoke 9 are arranged at the bottom of the lower shell 21. To ensure that the first yoke 8, the second yoke 9 and the bobbin 6 are stabilized in the lower case 21, thereby further improving the stability of the product.

Preferably, the lower case 21 is hooked with the hanging grooves 28 on both sides of the bobbin 6 by hooks 27 on both sides, so that the bobbin 6 is fixed in the lower case 21. In order to further improve the stability of the coil bobbin 6 after installation, after the upper shell 22 is butted with the lower shell 21, the upper shell 22 is provided with a fixing part 32 abutting against the coil bobbin 6.

Although the present invention has been described with reference to the above embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims

1. An electromagnetic release, comprising:

the coil component (1) mainly comprises a coil framework (6) and a winding lead terminal (7) arranged on the coil framework (6);

the yoke assembly (2) is arranged on one side of the coil framework (6), is formed by overlapping and welding a first yoke (8) and a second yoke (9) in a sheet shape, and is provided with a magnet mounting opening (10) between the tails of the first yoke and the second yoke, a main pole shoe surface (12) extending out of the upper end of a winding column (11) of the coil framework (6) is arranged on the first yoke (8), and a subsidiary pole shoe surface (13) extending out of one side of the upper end of the coil framework (6) corresponding to the main pole shoe surface (12) is arranged on the second yoke (9);

the armature (3) is movably arranged at the upper end of the coil framework (6) and is in contact with the main pole shoe surface (12) and the auxiliary pole shoe surface (13) to form a closed magnetic conduction loop;

a magnet (4) mounted in a magnet mounting opening (10) of the yoke assembly (2) and providing a magnetic force for maintaining a fit state between the armature (3) and the main pole shoe surface (12) and the auxiliary pole shoe surface (13);

and the elastic body (5) is connected with the armature (3) and provides elastic force for the armature (3) to separate from the main pole shoe surface (12) and the auxiliary pole shoe surface (13).

2. The electromagnetic release of claim 1, wherein: the magnet mounting opening (10) is formed by bending the tail parts of the first yoke (8) and the second yoke (9), the magnet mounting opening (10) is V-shaped, and the magnet (4) is adapted to the V-shape.

3. The electromagnetic release of claim 1, wherein: coil skeleton (6) upper end is equipped with armature mounting groove (14), the oral area of armature mounting groove (14) is equipped with support bellying (15), armature (3) are installed in armature mounting groove (14) and the rear end erects on support bellying (15).

4. The electromagnetic release of claim 1, wherein: the elastic body (5) is a double torsion spring and is arranged on an installation shaft (16) at two sides of the upper end of the coil framework (6), and a middle force arm (17) of the elastic body exerts pressure on the end part of the armature (3).

5. The electromagnetic release of claim 1, wherein: and positioning openings (18) are formed at the bottoms of the first yoke iron (8) and the second yoke iron (9).

6. The electromagnetic release of claim 1, wherein: coil skeleton (6) bottom is equipped with yoke mounting groove (19), first yoke (8), second yoke (9) bottom front end are installed in yoke mounting groove (19).

7. The electromagnetic release according to any one of claims 1 or 6, wherein: still include casing (20), casing (20) comprise lower casing (21) and last casing (22) of butt joint, coil pack (1), yoke subassembly (2), armature (3), magnet (4) and elastomer (5) hold in the inner chamber of lower casing (21), be equipped with movable push rod (23) in last casing (22).

8. The electromagnetic release of claim 7, wherein: a first positioning groove (24) for positioning the magnet mounting openings (10) of the first yoke (8) and the second yoke (9) is formed in the lower shell (21).

9. The electromagnetic release of claim 7, wherein: the both sides of lower casing (21) be equipped with second constant head tank (25) location fit's reference column (26) of coil skeleton (6) both sides, casing (21) bottom is equipped with down and is used for right location flange (30) that go on fixing a position in location mouth (18) of first yoke (8), second yoke (9) bottom.

10. The electromagnetic release of claim 7, wherein: the lower shell (21) is connected with the hanging grooves (28) on the two sides of the coil framework (6) in a hanging mode through hooks (27) on the two sides.