CN107749384A - A kind of double yoke Thermomagnetic type releases - Google Patents
A kind of double yoke Thermomagnetic type releases Download PDFInfo
- Publication number
- CN107749384A CN107749384A CN201711057214.2A CN201711057214A CN107749384A CN 107749384 A CN107749384 A CN 107749384A CN 201711057214 A CN201711057214 A CN 201711057214A CN 107749384 A CN107749384 A CN 107749384A
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- Prior art keywords
- yoke
- magnetic
- armature
- double
- thermomagnetic type
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention discloses a kind of double yoke Thermomagnetic type releases, belong to breaker structure technical field.The electrical apparatus release is made up of thermal tripping part and magnetic release member；Two parts are combined together by a base again, and associated with the dropout part of outside, disconnect breaker for driving dropout part to offset the counter pull action of extension spring in current overload or short-circuit generation；Thermal tripping part conducts recurring structure and be badly deformed to drive in current overload by heat takes off fasteners action；Magnetic release member produces magnetic attraction when electric current reaches short circuit current by double magnetic yoke structures causes de- fasteners action to realize dropout.The present invention can make yoke reach rotary balance, need not increase other parts under the conditions of impact to ensure the reliability of breaker work.
Description
Technical field
The present invention relates to the breaker in electric switch equipment, and in particular to the dropout part in breaker, belongs to open circuit
Device technical field of structures.
Background technology
Breaker can be divided into contact system, operating mechanism and tripping system this three parts by its structure.
Breaker realizes protection feature function, particularly Thermomagnetic type release one as breaker by tripping system
Individual pith, for limiting the setting electric current for flowing through breaker.It is excessive when flowing through circuit breaker current, reach more than setting range
In the case of overload, pass through thermal tripping component actuation；When such as reaching short circuit current, acted, and then triggered by magnetic release member
Operating mechanism drives contact system action to cut off electric current, and defencive function is played to circuit and electric equipment.
The electrical apparatus release of breaker is broadly divided into Thermomagnetic type release and electromagnetic release at present.Thermomagnetic type release be by
Thermal tripping part and magnetic release member composition；Electromagnetic release is to reduce thermal tripping portion on the basis of Thermomagnetic type release
Part.
Existing Thermomagnetic type release structure as shown in Figure 2, heater element 1, thrermostatic bimetal-plate 2, magnetic in electrical apparatus release
Yoke 13 and base 12 are riveted together, then armature 5 is through on base 12 by rotating shaft 14, in structure substantially one it is U-shaped
Yoke forms a magnetic conductive loop with armature 5.When breaker rated current is less than 100A, because magnetic section is small, short action
Electric current is small and the rotation imbalance of armature 5, causes yoke 13 can not produce larger suction and drives electrical apparatus release action to inhale moving armature, leads
Cause can not play the effect of low current short-circuit protection.To make armature 5 accomplish rotary balance i.e. center of rotation on particle, in armature 5
Upper end increases face without curvature or rivets the bigger material of color density to make armature reach rotary balance, because structure space has
Limit is different with material, makes the uniformity of balancing be difficult to reach ideal effect.Cause low current Thermomagnetic type release mostly only
Solenoid type structure can be used, the features such as causing processed complex and part dimension low precision, the spot welding at its coil both ends is even more
It is difficult to ensure that the uniformity of the reliable of welding and assembling.
In addition, existing Thermomagnetic type release, thermal tripping and magnetic dropout part are assembled on heater element, make phase
Interference is produced between mutually and is influenceed.Particularly U-shaped yoke and thermo bimetal are riveted on heater element, make to send out during low current
Heat caused by thermal element conducts in U-shaped yoke and scattered and disappeared, and U-shaped yoke is that ferromagnetic material volume compares compared with thermo bimetal
Greatly, cause to occur being failure to actuate during current overload or actuation time is longer, adjustment of being threaded off to electrical apparatus release long delay is more difficult.Such case
Under can only increase caloric value to heater element and adjust actuation time, make product power consumption is excessive to cause energy waste, and overheat
Quality problems are produced to parts such as nylon in breaker of plastic casing, there is serious potential safety hazard.
The content of the invention
The invention provides a kind of double yoke Thermomagnetic type releases, the electrical apparatus release passes through magnetic dropout parts are first with heating
Part separates in structure, then the center of rotation of yoke is made yoke on the barycenter of part by the structure type of double yokes
Reach rotary balance, other parts need not be increased under the conditions of impact to ensure the reliability of breaker work.
A kind of double yoke Thermomagnetic type releases, the electrical apparatus release are made up of thermal tripping part and magnetic release member；Two parts are again
It is combined together by a base, and it is associated with the dropout part of outside, it is de- for being driven in current overload or short-circuit generation
The counter pull action that fastener offsets extension spring disconnects breaker；The thermal tripping part is made in current overload by heat conduction
Bimetallic element deforms upon the de- fasteners action of drive；The magnetic release member passes through double yokes when electric current reaches short circuit current
Structure, which produces magnetic attraction, causes de- fasteners action to realize dropout.
Further, the thermal tripping part includes heater element and thrermostatic bimetal-plate, and the heater element is by two
The right angle bending structure that horizontal segment and vertical section are formed, two horizontal segments are located at both ends of vertical section and anti-in the horizontal direction
To extension；The thrermostatic bimetal-plate is fixedly connected on the inner surface of heater element vertical section.
Further, the magnetic release member includes upper magnet yoke, spring, armature, lower yoke and support, and the upper magnet yoke is consolidated
Dingan County is in heater element vertical section and corresponds to the position of upper end horizontal segment, and opening direction and the lower end horizontal segment of upper magnet yoke prolong
The direction stretched is consistent, and lower yoke is fixedly mounted on the horizontal segment of heater element lower end, and the opening direction of lower yoke is straight up；Institute
State support to be fixedly connected with the horizontal segment below heater element by connecting plate below, the main part of support is by lower yoke
Cladding, the armature is movably arranged on by the rotating shaft of its both sides in the mounting hole at main part both ends, armature in upper magnet yoke and
Rotated in the presence of magnetic force caused by double magnetic yoke structures of lower yoke composition around mounting hole；The both ends of the spring connect respectively
It is connected on armature and support, spring causes armature to be in equilbrium position.
Further, the Thermomagnetic type release is installed using multistage, can be two level or three-level by actual operation requirements,
Thermal tripping characteristic can be fixed by nut again when adjusting in thrermostatic bimetal-plate upper end installation and adjustment screw, realize that multistage current value is adjusted
It is whole；The spring or propping up that magnetic tripping characteristic can need that different size pulling force and quantity are installed between armature and support according to adjusting
Frame body part increases screw to adjust armature initial position air gap, adjusts short circuit current working value.
Beneficial effect
1st, of the invention compared with traditional single magnetic yoke structure, single magnetic yoke structure can not accomplish the rotary balance of armature, in warship
Under being required with impact, the structure of increase counterweight can only be used.Counterweight is set to produce an inertia force in impact de- to stop
Fastener or armature movement come by impact test, in structure the features such as complicated and poor reliability.May balance in mechanism
Hammer restoring force is too small to cause counterweight and dropout part or armature contact position clamping stagnation to make not threading off when breaker generation is short-circuit, or flat
Weighing apparatus hammer restoring force is excessive to be caused counterweight not act on to malfunction breaker in place.Double magnetic yoke structures of the present invention are with right up and down
The mode of title is installed, and makes the center of rotation of yoke allow yoke to reach rotary balance on the barycenter of part, is used in breaker in warship
Other parts need not be increased under the conditions of impact to ensure that breaker does not produce malfunction, it is simple in construction to greatly improve use reliability
And economy.
2nd, due to single yoke electrical apparatus release because the magnetic section of yoke is constrained by space structure, magnetic section is often smaller, leads
It could be acted when causing the protection value of short circuit current to reach larger, reduce the scope of application.Double magnetic yoke structures of the present invention make to take off
Device is detained under conditions of same volume, yoke is changed into two from single, and magnetic section allows armature by improving more than 40% originally
Itself reaches rotary balance, the magnetic attraction increase by more than 50% under same short circuit current, makes the wink dynamic knot of mold cased circuit breaker
Without using solenoid type with regard to that can accomplish low current action request, short-circuit protection scope greatly increases structure.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the present invention；
Fig. 2 is the structural representation of traditional Thermomagnetic type release；
Fig. 3 is the scheme of installation of present invention application on-board the circuit breaker.
Wherein：1- heater elements, 2- thrermostatic bimetal-plates, 3- upper magnet yokes, 4- springs, 5- armature, 6- lower yokes, 7- supports,
8- dropouts part, 9- extension springs, 10- screws, 11- nuts, 12- bases, 13- yokes, 14- rotating shafts.
Embodiment
As shown in figure 1, the invention provides a kind of double yoke Thermomagnetic type releases, the electrical apparatus release includes heater element 1, heat
Bimetal leaf 2, upper magnet yoke 3, spring 4, armature 5, lower yoke 6 and support 7；
The heater element 1 is the right angle bending structure formed by two horizontal segments and a vertical section, two horizontal segments
Positioned at both ends of vertical section and oppositely extending in the horizontal direction；
The upper magnet yoke 3 is fixedly mounted in heater element vertical section and corresponds to the position of upper end horizontal segment, upper magnet yoke 3
Opening direction is consistent with the direction that lower end horizontal segment extends, and lower yoke 6 is fixedly mounted on the horizontal segment of heater element lower end, lower magnetic
The opening direction of yoke 6 is straight up；The thrermostatic bimetal-plate 2 is fixedly connected on the inner surface of the vertical section of heater element 1；Institute
State support to be fixedly connected by the horizontal segment of the lower section of connecting plate below and heater element 1, the main part of support 7 is by lower magnetic
Yoke 6 is coated, and the armature 5 is movably arranged on by the rotating shaft of its both sides in the mounting hole at main part both ends, and armature 5 is in upper magnetic
Rotated in the presence of magnetic force caused by yoke 3 and lower yoke 6 around mounting hole；The both ends of the spring 4 are connected to armature 5
On support 7, spring 4 causes armature 5 to be in equilbrium position.
As shown in Figure 3, Thermomagnetic type release is installed in actual use using three-level, heater element 1 and thermo bimetal
Piece 2 forms thermal tripping part, and upper magnet yoke 3, spring 4, armature 5, lower yoke 6 and support 7 form magnetic release member, thermal tripping part
It is combined together with magnetic release member by a base 12, and it is associated with dropout part 8, in current overload or generation short circuit
When drive dropout part to offset the counter pull action of extension spring 9 to disconnect breaker；Thermal tripping characteristic can be in thrermostatic bimetal-plate 2 when adjusting
Upper end installation and adjustment screw 10 is fixed by nut 11 again, realizes multistage current value adjustment.Magnetic tripping characteristic can be according to adjusting needs
Different size pulling force and the spring 4 of quantity are installed between armature 5 and support 7, adjust short circuit current working value.
According to experiment, the spring 4 (when elongating 7mm, pulling force 3N) of formed objects, single yoke are used during rated current 400A
Structure action current is 1800A, and double magnetic yoke structure action currents are 950A, at the same reduce spring force (elongate 7mm when, pulling force is
1.7N), action current 600A.
In summary, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (4)
1. a kind of double yoke Thermomagnetic type releases, the electrical apparatus release are made up of thermal tripping part and magnetic release member；Two parts again by
One base is combined together, and associated with the dropout part of outside, is threaded off for being driven in current overload or short-circuit generation
The counter pull action that part offsets extension spring disconnects breaker；Characterized in that, the thermal tripping part passes through in current overload
Heat conduction makes bimetallic element deform upon the de- fasteners action of drive；The magnetic release member is when electric current reaches short circuit current
Producing magnetic attraction by double magnetic yoke structures causes de- fasteners action to realize dropout.
2. double yoke Thermomagnetic type releases according to claim 1, it is characterised in that the thermal tripping part includes heating
Element and thrermostatic bimetal-plate, the heater element are the right angle bending structures formed by two horizontal segments and a vertical section, two
Individual horizontal segment is located at both ends of vertical section and oppositely extending in the horizontal direction；The thrermostatic bimetal-plate is fixedly connected on heater element
On the inner surface of vertical section.
3. double yoke Thermomagnetic type releases according to claim 1 or 2, it is characterised in that the magnetic release member includes
Upper magnet yoke, spring, armature, lower yoke and support, the upper magnet yoke is fixedly mounted in heater element vertical section and corresponding upper end
The position of horizontal segment, the opening direction of upper magnet yoke is consistent with the direction that lower end horizontal segment extends, and lower yoke is fixedly mounted on heating
On the horizontal segment of element lower end, the opening direction of lower yoke is straight up；The support passes through connecting plate below and heating member
Horizontal segment below part is fixedly connected, and the main part of support coats lower yoke, and the armature is lived by the rotating shaft of its both sides
Dynamic to be arranged in the mounting hole at main part both ends, armature is in magnetic force caused by double magnetic yoke structures of upper magnet yoke and lower yoke composition
In the presence of rotated around mounting hole；The both ends of the spring are connected on armature and support, and spring causes at armature
In equilbrium position.
4. double yoke Thermomagnetic type releases according to claim 3, it is characterised in that the Thermomagnetic type release uses more
Level installation, thermal tripping characteristic are fixed by nut again when adjusting in thrermostatic bimetal-plate upper end installation and adjustment screw, realize multistage electric current
Value adjustment；Spring that magnetic tripping characteristic can need that different size pulling force and quantity are installed between armature and support according to adjusting or
Increase screw to adjust armature initial position air gap in bracket body part, adjust short circuit current working value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057214.2A CN107749384B (en) | 2017-11-01 | 2017-11-01 | Double-yoke thermomagnetic release |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711057214.2A CN107749384B (en) | 2017-11-01 | 2017-11-01 | Double-yoke thermomagnetic release |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107749384A true CN107749384A (en) | 2018-03-02 |
| CN107749384B CN107749384B (en) | 2020-03-17 |
Family
ID=61253505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711057214.2A Active CN107749384B (en) | 2017-11-01 | 2017-11-01 | Double-yoke thermomagnetic release |
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| Country | Link |
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| CN (1) | CN107749384B (en) |
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|---|---|---|---|---|
| CN201364861Y (en) * | 2009-03-20 | 2009-12-16 | 常熟开关制造有限公司(原常熟开关厂） | Short circuit protection device used for thermomagnetic overcurrent tripping device |
| CN101685728A (en) * | 2008-09-26 | 2010-03-31 | 浙江正泰电器股份有限公司 | Thermomagnetic tripper of breaker |
| CN101976640A (en) * | 2010-09-20 | 2011-02-16 | 江苏大全凯帆电器有限公司 | Low-voltage breaker tripper |
| CN102543606A (en) * | 2012-01-19 | 2012-07-04 | 江苏普华力拓电器股份有限公司 | Miniature circuit breaker |
| CN104867790A (en) * | 2014-02-21 | 2015-08-26 | 西门子公司 | Magnetic tripping device and overcurrent tripping device of an electrical switch and electrical switch and method for calibrating the magnetic tripping of a magnetic tripping device |
| CN204732364U (en) * | 2015-05-08 | 2015-10-28 | 无锡新宏泰电器科技股份有限公司 | A kind of trip gear of the adjustable instantaneous characteristic for breaker of plastic casing |
| CN205028873U (en) * | 2015-09-25 | 2016-02-10 | 浙江上图电气科技有限公司 | Magnetic tripping device for moulded case circuit breaker |
| CN105448613A (en) * | 2014-08-15 | 2016-03-30 | 施耐德电气工业公司 | Release used for breaker |
| CN207489793U (en) * | 2017-11-01 | 2018-06-12 | 常熟瑞特电气股份有限公司 | A kind of double yoke Thermomagnetic type releases |
-
2017
- 2017-11-01 CN CN201711057214.2A patent/CN107749384B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685728A (en) * | 2008-09-26 | 2010-03-31 | 浙江正泰电器股份有限公司 | Thermomagnetic tripper of breaker |
| CN201364861Y (en) * | 2009-03-20 | 2009-12-16 | 常熟开关制造有限公司(原常熟开关厂） | Short circuit protection device used for thermomagnetic overcurrent tripping device |
| CN101976640A (en) * | 2010-09-20 | 2011-02-16 | 江苏大全凯帆电器有限公司 | Low-voltage breaker tripper |
| CN102543606A (en) * | 2012-01-19 | 2012-07-04 | 江苏普华力拓电器股份有限公司 | Miniature circuit breaker |
| CN104867790A (en) * | 2014-02-21 | 2015-08-26 | 西门子公司 | Magnetic tripping device and overcurrent tripping device of an electrical switch and electrical switch and method for calibrating the magnetic tripping of a magnetic tripping device |
| CN105448613A (en) * | 2014-08-15 | 2016-03-30 | 施耐德电气工业公司 | Release used for breaker |
| CN204732364U (en) * | 2015-05-08 | 2015-10-28 | 无锡新宏泰电器科技股份有限公司 | A kind of trip gear of the adjustable instantaneous characteristic for breaker of plastic casing |
| CN205028873U (en) * | 2015-09-25 | 2016-02-10 | 浙江上图电气科技有限公司 | Magnetic tripping device for moulded case circuit breaker |
| CN207489793U (en) * | 2017-11-01 | 2018-06-12 | 常熟瑞特电气股份有限公司 | A kind of double yoke Thermomagnetic type releases |
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| Publication number | Publication date |
|---|---|
| CN107749384B (en) | 2020-03-17 |
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Address after: 215500 No.2 Qingdao Road, high tech Industrial Park, Yushan Town, Changshu City, Suzhou City, Jiangsu Province Patentee after: Changshu Guorui Technology Co.,Ltd. Address before: 215500 Yushan High-tech Industrial Park, Changshu City, Jiangsu Province, No. 40, Suzhou Road Patentee before: CHANGSHU RUITE ELECTRIC Co.,Ltd. |