CN109342782B - Hall current sensor framework - Google Patents
Hall current sensor framework Download PDFInfo
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- CN109342782B CN109342782B CN201811424053.0A CN201811424053A CN109342782B CN 109342782 B CN109342782 B CN 109342782B CN 201811424053 A CN201811424053 A CN 201811424053A CN 109342782 B CN109342782 B CN 109342782B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
Abstract
The invention relates to a sensor framework and discloses a Hall current sensor framework. The sensor framework comprises a framework shell, wherein annular magnetic core mounting grooves are formed in the upper end and the lower end of the framework shell, the upper end and the lower end of the framework shell are not communicated with each other, a fixing boss is arranged on the upper side of the inner wall of the framework shell, a Hall assembly is mounted on the fixing boss, the Hall assembly comprises a first Hall element, a switching plate and a switching contact pin, the first Hall element is vertically inserted and welded on the switching plate and passes through the switching plate and connected with the switching contact pin, the switching contact pin faces the interior of the framework shell, the fixing boss comprises a first Hall element slot, a switching plate slot and a switching contact pin slot, the width of the switching plate slot is the same as that of the switching plate so. The sensor has the advantages of small skeleton structure and strong environment adaptability.
Description
Technical Field
The invention relates to a sensor framework, in particular to a Hall current sensor framework.
Background
The existing high-precision Hall current sensor adopts a double-Hall element and double-magnetic-core structure mode, and compared with a single-Hall element and single-magnetic-core mode, the sensor has the advantages that the position error of the detected current can be eliminated to a great extent, and the noise and temperature drift output by the sensor are reduced.
Two magnetic cores of the existing high-precision Hall current sensor are placed on the upper side and the lower side of a framework in parallel and coaxially, and two Hall elements are respectively inserted into air gaps of the two magnetic cores. The Hall element in the air gap of the upper magnetic core is welded on the adapter plate on the outer side of the framework and then is switched to the printed board below the framework, the switching installation mode of the Hall element is completed on the outer side of the framework, a part of space is additionally occupied, and the overall structure size of the sensor is correspondingly increased; in addition, the hall element on the upper side is not firmly installed in a switching manner, and when the hall element is subjected to high and low temperature changes, mechanical vibration, impact and other conditions, the position of the hall element can be changed to a certain extent, so that the measurement accuracy of the sensor is reduced. Therefore, the framework of the Hall current sensor which is miniaturized and has strong environmental adaptability is provided, and the framework has important significance.
Disclosure of Invention
The invention provides a Hall current sensor framework, aiming at solving the technical problems that the Hall current sensor framework in the prior art occupies a large space and has poor environment adaptability.
In order to solve the technical problems, the invention adopts the following technical scheme:
a Hall current sensor framework comprises a framework shell, wherein the upper end and the lower end of the framework shell are respectively provided with an annular magnetic core mounting groove, the upper annular magnetic core mounting groove and the lower annular magnetic core mounting groove are not communicated with each other, a fixing boss is arranged on the upper side of the inner wall of the framework shell, a Hall assembly is arranged on the fixing boss, the Hall assembly comprises a first Hall element, a switching plate and a switching contact pin, the first Hall element is vertically inserted and welded on the switching plate, and is connected with the switching contact pin through the switching plate, the switching contact pin faces to the framework shell, the fixing boss comprises a first Hall element slot, an adapter plate slot and an adapter pin slot, the width of the adapter plate slot is the same as that of the adapter plate so as to realize close fit, and a second Hall element slot is arranged on the lower end face of the outer wall of the framework shell, so that a second Hall element can be inserted into the slot.
The annular magnetic core mounting groove is used for mounting two coaxial magnetic cores, and the two magnetic cores are isolated from each other through the partition plate in the middle, so that mutual crosstalk of magnetic fields in the two magnetic cores is prevented.
The sensor framework provided by the invention also comprises a framework upper cover and a framework lower cover which are arranged at the upper end and the lower end of the framework shell; the framework upper cover and the framework lower cover are both of circular ring thin sheet structures, the framework upper cover and the framework lower cover are just matched with the framework shell upper end face and the framework shell lower end face respectively, and the framework upper cover, the framework shell lower end face and the framework shell lower end face are assembled to form a whole framework.
The framework shell comprises a framework shell body and is characterized in that a framework upper cover is arranged on the framework shell body, first positioning bosses are arranged on the framework upper cover, first limiting bosses are arranged on the left side and the right side of each first positioning boss respectively, a pair of assembling grooves are formed in the upper end face of the framework shell body, and each first limiting boss is correspondingly inserted into each assembling groove.
The framework lower cover is provided with a second positioning boss and two third positioning bosses, a gap for a second Hall element to pass through is reserved between the two third positioning bosses, two sides of the second positioning bosses are respectively provided with a second limiting boss, each of the two sides of the third positioning bosses is respectively provided with a third limiting boss, three pairs of assembling grooves are formed in the lower end face of the framework shell, and each of the second limiting bosses and the third limiting bosses is correspondingly inserted into the assembling grooves.
The two welding pins are embedded at the lower end of the framework shell of the sensor framework, and the assembled framework is welded on the printed board through the two welding pins, so that the framework and the printed board are integrated.
Preferably, the sensor framework is made of polyester resin PBT (G30) material.
Compared with the Hall current sensor framework in the prior art, the technical scheme provided by the invention has the following beneficial effects: the orientation of a pin welding needle of the first Hall element on the upper side is changed to enable the pin welding needle to face the inner side of the framework, and the whole switching part is completed in the framework, so that the occupied volume of the sensor is reduced, and the miniaturization design of a product is facilitated; secondly, a switching installation groove for arranging the first Hall element on the upper side is added, so that the switching plate and the framework form a whole, and the position of the first Hall element in the air gap of the magnetic core cannot be changed; the environmental adaptability of the product is improved, and the precision of the product is not reduced when the product encounters severe environments such as high and low temperature changes or mechanical vibration, impact and the like.
Drawings
FIG. 1 is a top view of a skeletal shell provided in accordance with the present invention;
FIG. 2 is a bottom view of the skeletal shell provided by the present invention;
FIG. 3 is a schematic view of a skeleton top cover structure provided by the present invention;
FIG. 4 is a schematic view of a skeleton lower cover structure provided in the present invention;
FIG. 5 is a schematic diagram of a Hall assembly according to the present invention;
FIG. 6 is a schematic structural view of the assembled skeletal shell and skeletal upper cover according to the present invention;
fig. 7 is a schematic structural view of the skeleton lower cover and the skeleton housing provided in the present invention after assembly.
Detailed Description
The invention aims to provide a Hall current sensor framework, and aims to solve the technical problems that the Hall current sensor framework in the prior art occupies a large space and has poor environment adaptability.
In order that those skilled in the art will be better able to understand the present invention, the following detailed description of the invention is given in conjunction with the accompanying drawings.
A Hall current sensor framework comprises a framework shell, wherein the upper end and the lower end of the framework shell are respectively provided with an annular magnetic core installation groove 101 and an annular magnetic core installation groove 107, the upper annular magnetic core installation groove and the lower annular magnetic core installation groove are not communicated with each other and are used for installing two coaxial magnetic cores, a fixed boss 102 is arranged on the upper side of the inner wall of the framework shell, a Hall assembly is arranged on the fixed boss and comprises a first Hall element 41, an adapter plate 42 and a switching contact pin 43, the first Hall element 41 is vertically inserted and welded on the adapter plate 42 and is connected with the switching contact pin 43 after being wired through the adapter plate 42, the switching contact pin 43 faces towards the inside of the framework shell, the fixed boss 102 comprises a first Hall element slot 103, an adapter plate slot 104 and a switching contact pin slot 105, the width of the adapter plate slot 104 is the same as that of the adapter plate 42 so as to realize close fit, the lower end face of the, so that the second hall element 61 can be inserted therein.
The sensor framework provided by the invention also comprises a framework upper cover and a framework lower cover which are arranged at the upper end and the lower end of the framework shell; the framework upper cover and the framework lower cover are both of circular ring thin sheet structures, the framework upper cover and the framework lower cover are just matched with the framework shell upper end face and the framework shell lower end face respectively, and the framework upper cover, the framework shell lower end face and the framework shell lower end face are assembled to form a whole framework. The framework upper cover is provided with a first positioning boss 22, the left side and the right side of the first positioning boss are respectively provided with a first limiting boss 21, the upper end face of the framework shell is provided with a pair of assembling grooves 106, and the two first limiting bosses 21 are respectively and correspondingly inserted into the pair of assembling grooves 106. The framework lower cover is provided with a second positioning boss 34 and two third positioning bosses 35, a gap 33 for a second Hall element to pass through is reserved between the two third positioning bosses 35, two sides of the second positioning boss 34 are respectively provided with a second limiting boss 31, two sides of each third positioning boss 35 are respectively provided with a third limiting boss 32, the lower end surface of the framework shell is provided with three pairs of assembling grooves 109 and 110, the second limiting boss 31 is inserted into the pair of assembling grooves 109, and the two third limiting bosses 32 are inserted into the two pairs of assembling grooves 110; two welding pins 111 and 112 are embedded at the lower end of the framework shell, and the assembled framework is welded on the printed board through the two welding pins, so that the framework and the printed board are integrated.
The assembly process of the sensor framework provided by the invention is as follows:
(1) assembling a first magnetic core in an annular magnetic core mounting groove 101 of the framework shell, wherein the air gap position of the first magnetic core is matched with a slot 103 of a first Hall element;
(2) inserting the adapter plate 42 welded with the first hall element into the bottom of the adapter plate slot 104, arranging the pin of the first hall element in the first hall element slot 103, and enabling the adapter pin 43 to pass through the adapter pin slot 105 and then face the lower part of the framework shell;
(3) installing the framework upper cover on the upper end surface of the framework shell, enabling the positioning boss 22 to face the outer side of the framework shell, and inserting the limiting boss 21 into the assembling groove 106; as shown in fig. 6 after assembly;
(4) assembling a second magnetic core in an annular magnetic core mounting groove 107 of the framework shell, wherein the air gap position of the second magnetic core is matched with a second Hall element slot 108;
(5) assembling the framework lower cover on the lower end face of the framework shell, wherein the second positioning boss 34 and the two third positioning bosses 35 face the outer side of the framework shell, and the second limiting boss 31 and the third limiting boss 32 are respectively inserted into the assembling grooves 109 and 110;
(6) inserting a second hall element into the bottom of the slot 108; after assembly as shown in fig. 7.
The hall current sensor framework provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and central concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a hall current sensor skeleton, includes the skeleton casing, its characterized in that: the framework shell is characterized in that annular magnetic core mounting grooves are formed in the upper end and the lower end of the framework shell, the upper end and the lower end of the framework shell are not communicated with each other, a fixing boss is arranged on the upper side of the inner wall of the framework shell, a Hall assembly is mounted on the fixing boss and comprises a first Hall element, a switching plate and a switching contact pin, the first Hall element is vertically inserted and welded on the switching plate and passes through the switching plate and connected with the switching contact pin, the switching contact pin faces the interior of the framework shell, the fixing boss comprises a first Hall element slot, a switching plate slot and a switching contact pin slot, the width of the switching plate slot is the same as that of the switching.
2. The hall current sensor skeleton of claim 1, wherein: the framework upper cover and the framework lower cover are arranged at the upper end and the lower end of the framework shell; the framework upper cover and the framework lower cover are both of circular ring sheet structures and are just matched with the upper end surface and the lower end surface of the framework shell respectively.
3. The hall current sensor skeleton of claim 2, wherein: the framework upper cover is provided with a first positioning boss, the left side and the right side of the first positioning boss are respectively provided with a first limiting boss, the upper end face of the framework shell is provided with a pair of assembling grooves, and each first limiting boss is correspondingly inserted into the assembling grooves.
4. The hall current sensor skeleton of claim 2, wherein: the framework lower cover is provided with a second positioning boss and two third positioning bosses, a gap for a second Hall element to pass through is reserved between the two third positioning bosses, two sides of the second positioning bosses are respectively provided with a second limiting boss, each of the two sides of the third positioning bosses is respectively provided with a third limiting boss, three pairs of assembly grooves are formed in the lower end face of the framework shell, and each of the second limiting boss and the third limiting boss is correspondingly inserted into the assembly grooves.
5. The hall current sensor skeleton of claim 1, wherein: two welding pins are embedded at the lower end of the framework shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424053.0A CN109342782B (en) | 2018-11-27 | 2018-11-27 | Hall current sensor framework |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811424053.0A CN109342782B (en) | 2018-11-27 | 2018-11-27 | Hall current sensor framework |
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| Publication Number | Publication Date |
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| CN109342782A CN109342782A (en) | 2019-02-15 |
| CN109342782B true CN109342782B (en) | 2021-03-16 |
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| CN201811424053.0A Active CN109342782B (en) | 2018-11-27 | 2018-11-27 | Hall current sensor framework |
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| CN114113738A (en) * | 2022-01-25 | 2022-03-01 | 南京普肯传感科技有限公司 | Magnetic circuit for core-through closed-loop Hall current sensor and mounting structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012145431A (en) * | 2011-01-12 | 2012-08-02 | Sumitomo Wiring Syst Ltd | Current detector |
| CN202661525U (en) * | 2012-01-19 | 2013-01-09 | 邹高芝 | Coaxial double-loop magnetic core structure assembly for core-through type high precision opened-loop type Hall current sensor |
| CN205880036U (en) * | 2016-11-22 | 2017-01-11 | 深圳市浩海实业有限公司 | Current sensor |
| CN108535527A (en) * | 2018-06-05 | 2018-09-14 | 南京普肯传感科技有限公司 | A kind of full PCB installing types closed-loop type Hall current sensor mounting structure |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203398943U (en) * | 2013-07-15 | 2014-01-15 | 常州富兴机电有限公司 | Fixing device for Hall circuit board |
| CN205484514U (en) * | 2016-03-23 | 2016-08-17 | 宁波锦澄电子科技股份有限公司 | Novel high -speed current sensor |
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- 2018-11-27 CN CN201811424053.0A patent/CN109342782B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012145431A (en) * | 2011-01-12 | 2012-08-02 | Sumitomo Wiring Syst Ltd | Current detector |
| CN202661525U (en) * | 2012-01-19 | 2013-01-09 | 邹高芝 | Coaxial double-loop magnetic core structure assembly for core-through type high precision opened-loop type Hall current sensor |
| CN205880036U (en) * | 2016-11-22 | 2017-01-11 | 深圳市浩海实业有限公司 | Current sensor |
| CN108535527A (en) * | 2018-06-05 | 2018-09-14 | 南京普肯传感科技有限公司 | A kind of full PCB installing types closed-loop type Hall current sensor mounting structure |
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| CN109342782A (en) | 2019-02-15 |
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