CN106291033A - A kind of opening and closing type current sensor magnetic core fixed structure and core assembly - Google Patents
A kind of opening and closing type current sensor magnetic core fixed structure and core assembly Download PDFInfo
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- CN106291033A CN106291033A CN201610946222.1A CN201610946222A CN106291033A CN 106291033 A CN106291033 A CN 106291033A CN 201610946222 A CN201610946222 A CN 201610946222A CN 106291033 A CN106291033 A CN 106291033A
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- magnetic core
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
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Abstract
The invention discloses a kind of opening and closing type current sensor magnetic core fixed structure and core assembly, the lower magnetic core of magnet ring structure is constituted, for the skeleton of fixing lower magnetic core, for encapsulating the shell of magnet ring structure and skeleton including upper magnetic core and upper magnetic core, shell includes upper shell and lower house, upper shell is fixed on lower house by attachment structure, it is provided with framework positioning structure in lower house, upper shell is provided with magnetic core fixed structure；It is provided with perforation structure on upper shell and lower house, is used for fixing punching line；One end of skeleton is provided with Hall element locating slot, and Hall element locating slot is provided with lower magnetic core keeper, coiling closed-loop Hall current sensor secondary coil on skeleton；Its hall device mounting stability is high, the precision of current sensor is high and jamproof ability is strong.
Description
Technical field
The present invention relates to current sensor magnetic core coil assembly field, be specifically related to a kind of based on DC low current detection
A kind of opening and closing type current sensor magnetic core fixed structure and core assembly.
Background technology
Hall current sensor is with the advantage of its uniqueness, and response time is fast, precision is high, reliability is high, energy isolation detection is handed over
DC current etc. and be widely used in using electric current as the automation field of control object.
Different according to the principle used, Hall current sensor can be divided into open loop and two kinds of mode of operations of closed loop.For
The measurement of the small area analysis less than 50A, in order to ensure that certainty of measurement typically uses closed loop mode of operation.Along with curstomer's site requirement
Improving, outage detection is not the direction of following current detecting, this just require product sensor be designed to can the mode of folding, convenient
In the online Fast Installation of curstomer's site and dismounting.Traditional open-type product uses double gas that the magnetic core of two semi-rings is spliced into
Gap structure, as it is shown in figure 1, this structure there is problems in that
1, double air-gap magnetic circuit structures add the length of air gap, thus cause total length of magnetic path to increase.Magnetic induction at air gap is strong
Spend relatively low, no matter use single hall device still to use double hall device scheme all can cause the sensitivity decrease of hall device,
The precision eventually making Hall current sensor product is affected, especially when testing small area analysis；
2, location is lacked between semi-ring magnetic core and magnetic core coil assembly and product casing, fixed by artificial manual glue-filling solid, there is dress
Join asymmetry problem, affect the concordance of product and make that punching line position is fixing exists error, product punching line position error one
As 1%；
3, the installation at air gap of hall device is fixing drips glue by printed board and fixes, and checking affects the reliability, unanimously of product
Property and production efficiency.
Summary of the invention
The present invention is to solve that above-mentioned technical problem is to provide a kind of opening and closing type current sensor magnetic core fixed structure
And core assembly, its hall device mounting stability is high, the precision of current sensor is high and jamproof ability is strong.
The present invention is achieved through the following technical solutions:
A kind of opening and closing type current sensor magnetic core fixed structure, including shell and fixing skeleton in the enclosure, skeleton is used
In fixing lower magnetic core, shell includes upper shell and lower house, and described upper shell is fixed on lower house by attachment structure, described
Be provided with magnetic core fixed structure on upper shell, in described lower house, be provided with framework positioning structure, upper magnetic core fixed structure and
The position of framework positioning structure determines and makes magnetic core and lower magnetic core alignment so that the assembling of upper magnetic core and lower magnetic core is symmetrical；On
Being provided with perforation structure on housing and lower house, punching line is fixed by perforation structure；One end of skeleton is provided with Hall unit
Part locating slot, when Hall element locating slot is provided with lower magnetic core keeper, upper magnetic core and lower magnetic core make-up composition magnet ring structure,
Lower magnetic core can be carried out spacing by lower magnetic core keeper, it is ensured that the stability of its structure.Use said structure, skeleton and upper magnetic core solid
Fixed structure location positioning is accurate, and during installation, the connection end of upper magnetic core and lower magnetic core docks completely so that upper magnetic core and lower magnetic core structure
Become single gap structure, only exist the air gap of Hall element installation end, effectively reduce the length of air gap, enhance small area analysis and survey
Magnetic induction at air gap during examination, improves the induced potential of Hall element, makes the precision of current sensor and jamproof
Ability is greatly improved, within small current measurement precision reaches 0.5%FS.Use shell that magnet ring structure is positioned, solve
Certainly assemble asymmetry problem, the coherence enhancing of product and effectively reduce punching line position fixed error.Hall element locating slot
Hall element is fixed, strengthens the stability that hall device installation at air gap is fixing.
As preferably, in order to further strengthen the accuracy to framework location, described skeleton include annular mounting body,
Being arranged in mounting body the annular groove for fixing lower magnetic core, the two ends of described groove are provided with mounting ear, described under
Mounting ear mounting groove it is provided with in housing.
Further, described mounting body becomes semicircular.
A kind of opening and closing type current sensor core assembly, is constituted under magnet ring structure including upper magnetic core with upper magnetic core
Magnetic core, also includes the skeleton for fixing lower magnetic core, for encapsulating the shell of magnet ring structure and skeleton, and described shell includes upper casing
Body and lower house, described upper shell is fixed on lower house by attachment structure, is provided with framework location knot in described lower house
Structure, described upper shell is provided with magnetic core fixed structure, and described upper shell and lower house are provided with perforation structure, described bone
One end of frame is provided with Hall element locating slot, and described Hall element locating slot is provided with lower magnetic core keeper.
As preferably, described skeleton includes the annular mounting body matched with magnet ring structure, is arranged in mounting body
For the annular groove of fixing lower magnetic core, the two ends of described groove are provided with mounting ear, are provided with installation in described lower house
Ear mounting groove.
As preferably, in order to improve upper magnetic core and the coupling accuracy of lower magnetic core, one end of described lower magnetic core is placed in Hall unit
Part locating slot is interior and is adjacent to lower magnetic core keeper, and the other end protrudes from skeleton.
Further, in order to improve the effect of coupling accuracy, described lower magnetic core protrudes its height protruded of one end of skeleton
For 0.4mm to 0.6mm.
As preferably, in order to improve Product checking precision, reduce production cost, described upper magnetic core and lower magnetic core and use
Permalloy lamination structure.The process that the upper magnetic ring of the magnetic structure of two traditional semi-rings and lower magnet ring use is by magnetic core
Carrying out after band coiling and molding cutting again and be made, this method is not only bad for the batch production of product, and causes magnetic
Core cutting accuracy is the highest, and scale error is relatively big, and the assembling yield rate of magnetic core is relatively low.And this programme, use permalloy punching knot
Structure, end processes intact, reduces the effect of scattered magnetic.Up and down semi-ring installs holohedral symmetry, the most less input punching
The impact of line position error.
As preferably, described attachment structure is bolt.
The present invention compared with prior art, at least has such advantages as and beneficial effect:
1, the present invention uses the structure of shell and skeleton to carry out installing fixing to upper magnetic core and lower magnetic core, upper magnetic core and lower magnetic core
Connect end to dock completely so that upper magnetic core and lower magnetic core constitute single gap structure, effectively reduce the length of air gap, enhance
Small area analysis test time air gap at magnetic induction, improve the induced potential of Hall element, make current sensor precision and
Jamproof ability is greatly improved.
2, the present invention uses shell to position magnet ring structure, solves assembling asymmetry problem, and the concordance of product increases
Strong and effectively reduce punching line position fixed error.
3, the present invention uses Hall element locating slot to be fixed Hall element, and hall device installation at air gap is solid
Fixed stability strengthens.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing being further appreciated by the embodiment of the present invention, constitutes of the application
Point, it is not intended that the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing core assembly.
Fig. 2 is the structural representation of the magnetic core fixed structure of the present invention.
Fig. 3 is the A view of Fig. 2.
Fig. 4 is the skeleton scheme of installation with lower magnetic core of the present invention.
The parts title of labelling and correspondence in accompanying drawing:
12, lower magnetic core, 2, skeleton, 21, mounting ear, 22, Hall element locating slot, 23, lower magnetic core keeper, 31, upper shell,
32, lower house, 4, attachment structure.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and explanation thereof are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
A kind of opening and closing type current sensor magnetic core fixed structure as shown in Figures 2 and 3, including for fixing lower magnetic core 12
Skeleton 2, for encapsulating magnetic core, lower magnetic core 12 and the shell of skeleton 2, described shell includes upper shell 31 and lower house 32, institute
State upper shell 31 to be fixed on lower house by attachment structure 4, in described lower house, be provided with framework positioning structure, described upper casing
Being provided with magnetic core fixed structure on body, described upper shell and lower house are provided with perforation structure, one end of described skeleton 2 sets
It is equipped with Hall element locating slot 22, described Hall element locating slot 22 is provided with lower magnetic core keeper 23.
Concrete, skeleton 2 includes annular mounting body, to be arranged in mounting body the annular for fixing lower magnetic core 12 recessed
Groove, the two ends of described groove are provided with mounting ear 21, are provided with mounting ear mounting groove, mounting ear and installation in described lower house
Ear mounting groove realizes slitless connection, it is ensured that lower magnet ring installs the accuracy of location.
Described mounting body becomes semicircular.
Embodiment 2
As shown in Figure 4, the structure of embodiment 1 is applied to fixing of magnetic core by the present embodiment, and overall structure constitutes core assembly,
Concrete, including upper magnetic core and upper magnetic core constitute magnet ring structure lower magnetic core 12, for fixing lower magnetic core 12 skeleton 2, for
Encapsulation magnet ring structure and the shell of skeleton 2, shell includes upper shell and lower house, and upper shell is fixed on lower casing by attachment structure
On body, in lower house, it is provided with framework positioning structure, upper shell is provided with magnetic core fixed structure；On upper shell and lower house
It is provided with perforation structure, is used for fixing punching line；One end of skeleton 2 is provided with Hall element locating slot 22, and Hall element positions
Lower magnetic core keeper 23 it is provided with, coiling closed-loop Hall current sensor secondary coil on skeleton on groove 22.
Hall element is placed in Hall element locating slot 22, the HW108-F device that Hall element uses thickness to be 0.8mm,
And using flexible printed circuit Surface Mount to form, rear employing flexible printed circuit is fixed on magnetic core coil assembly.Hall element Surface Mount exists
On flexible printed circuit, it is arranged in air gap groove, can guarantee that Hall element sensitivity center is always positioned at magnetic core air gap geometric center position
Put, make sensor have optimal dynamic property；The concordance installed is good, thus ensure that the consistency of performance of sensor.
Concrete, skeleton 2 includes annular mounting body, to be arranged in mounting body the annular for fixing lower magnetic core 12 recessed
Groove, the two ends of described groove are provided with mounting ear 21, are provided with mounting ear mounting groove in described lower house.
Embodiment 3
The present embodiment is optimized on the basis of above-described embodiment, i.e. descends one end of magnetic core 12 to be placed in Hall element locating slot
In 22 and be adjacent to lower magnetic core keeper 23, the other end protrudes from skeleton 2.
Concrete, it is 0.4mm to 0.6mm that lower magnetic core protrudes its height protruded of one end of skeleton.Preferably, can will protrude
Highly it is set to 0.5mm.The part of protrusion is seamless with upper magnetic core to be contacted, and makes whole magnetic core magnetic circuit be in the knot of a single air gap
Structure, thus strengthen the magnetic induction at air gap, the sensitivity of product increases, and precision improves.The mounting ear of skeleton and lower house
It is in approximately the same plane, magnetic core one end skeleton to be protruded under this structures shape.
Embodiment 4
The present embodiment is optimized on the basis of above-described embodiment, i.e. goes up magnetic core and lower magnetic core uses permalloy punching knot
Structure, the punching laminate number of upper magnetic core is more than lower magnetic core punching laminate number.Upper magnetic core all becomes semi-loop, magnetic core with lower magnetic core
Material uses the trade mark to be 1J85, and tape thickness is that the permalloy band stamping riveting of 0.5mm forms, and upper magnetic core punching laminate number is
15, lower magnetic core punching laminate number is 13.Semi-ring internal-and external diameter is consistent up and down, it is achieved perfection docking at semi-ring air-gap-free up and down, under
Semi-ring magnetic core leaves air gap.
The punching laminate number of upper magnetic core is because magnetic core more than lower magnetic core punching laminate number does not has design and installation bone
Frame, and the many magnetic core frameworks of lower semi-ring, skeleton has certain thickness, the caliper portion that sheet number is skeleton of increase.At magnetic
At core air gap, upper magnetic core contacts with the end face of the lower magnetic core keeper 23 of skeleton, it is ensured that both docking, it is to avoid due to assembling by mistake
Difference causes the change of air-gap magnetic circuit.
Shell can use thermostability engineering plastic PBT to be molded, skeleton use engineering plastic PC polycarbonate injection moulded and
Become.Upper shell and lower house are adopted and are screwed, and nut is embedded in moulding, facilitate the dismounting of product.
Above-described detailed description of the invention, has been carried out the purpose of the present invention, technical scheme and beneficial effect further
Describe in detail, be it should be understood that the detailed description of the invention that the foregoing is only the present invention, be not intended to limit the present invention
Protection domain, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, all should comprise
Within protection scope of the present invention.
Claims (9)
1. an opening and closing type current sensor magnetic core fixed structure, it is characterised in that: include for fixing lower magnetic core (12)
Skeleton (2), be used for encapsulating magnetic core, lower magnetic core (12) and the shell of skeleton (2), described shell include upper shell (31) and under
Housing (32), described upper shell (31) is fixed on lower house by attachment structure (4), and described lower house is provided with bone in (32)
Frame location structure, described upper shell (31) is provided with on magnetic core fixed structure, described upper shell (31) and lower house (32)
Being provided with perforation structure, one end of described skeleton (2) is provided with Hall element locating slot (22), described Hall element locating slot
(22) lower magnetic core keeper (23) it is provided with on.
A kind of opening and closing type current sensor magnetic core fixed structure the most according to claim 1, it is characterised in that: described
Skeleton (2) includes annular mounting body, is arranged in mounting body the annular groove for fixing lower magnetic core (12), described groove
Two ends be provided with mounting ear (21), be provided with mounting ear mounting groove in described lower house.
A kind of opening and closing type current sensor magnetic core fixed structure the most according to claim 2, it is characterised in that: described
Mounting body becomes semicircular.
4. an opening and closing type current sensor core assembly, constitutes the lower magnetic of magnet ring structure including upper magnetic core with upper magnetic core
Core (12), it is characterised in that: also include the skeleton (2) for fixing lower magnetic core (12), be used for encapsulating magnet ring structure and skeleton (2)
Shell, described shell includes that upper shell and lower house, described upper shell are fixed on lower house by attachment structure, described under
It is provided with framework positioning structure in housing, described upper shell is provided with magnetic core fixed structure, described upper shell and lower house
On be provided with perforation structure, one end of described skeleton (2) is provided with Hall element locating slot (22), described Hall element locating slot
(22) lower magnetic core keeper (23) it is provided with on.
A kind of opening and closing type current sensor core assembly the most according to claim 4, it is characterised in that: described skeleton
(2) include annular mounting body, be arranged in mounting body the annular groove for fixing lower magnetic core (12), the two of described groove
End is provided with mounting ear (21), is provided with mounting ear mounting groove in described lower house.
A kind of opening and closing type current sensor core assembly the most according to claim 4, it is characterised in that: described lower magnetic
One end of core (12) is placed in Hall element locating slot (22) and is adjacent to lower magnetic core keeper (23), and the other end protrudes from skeleton
(2).
A kind of opening and closing type current sensor core assembly the most according to claim 6, it is characterised in that: described lower magnetic
It is 0.4mm to 0.6mm that core (12) protrudes its height protruded of one end of skeleton.
A kind of opening and closing type current sensor core assembly the most according to claim 4, it is characterised in that: described upper magnetic
Core and lower magnetic core use permalloy lamination structure.
A kind of opening and closing type current sensor core assembly the most according to claim 4, it is characterised in that: described connection
Structure (4) is bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946222.1A CN106291033A (en) | 2016-10-26 | 2016-10-26 | A kind of opening and closing type current sensor magnetic core fixed structure and core assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610946222.1A CN106291033A (en) | 2016-10-26 | 2016-10-26 | A kind of opening and closing type current sensor magnetic core fixed structure and core assembly |
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| CN106291033A true CN106291033A (en) | 2017-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610946222.1A Pending CN106291033A (en) | 2016-10-26 | 2016-10-26 | A kind of opening and closing type current sensor magnetic core fixed structure and core assembly |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106501595A (en) * | 2017-01-12 | 2017-03-15 | 上海康比利仪表有限公司 | A kind of sensor |
| CN109298233A (en) * | 2018-11-30 | 2019-02-01 | 国网电力科学研究院武汉南瑞有限责任公司 | A kind of alterating and direct current flow sensor |
| CN110082581A (en) * | 2019-05-15 | 2019-08-02 | 山东航天电子技术研究所 | A kind of Hall current sensor skeleton |
| CN110108922A (en) * | 2019-05-28 | 2019-08-09 | 南京普肯传感科技有限公司 | A kind of removable open ring type Hall current sensor magnetic circuit circuit mounting structure |
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Application publication date: 20170104 |