CN103280292A - Magnetic component for switch-type Hall sensor - Google Patents
Magnetic component for switch-type Hall sensor Download PDFInfo
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- CN103280292A CN103280292A CN2013102291242A CN201310229124A CN103280292A CN 103280292 A CN103280292 A CN 103280292A CN 2013102291242 A CN2013102291242 A CN 2013102291242A CN 201310229124 A CN201310229124 A CN 201310229124A CN 103280292 A CN103280292 A CN 103280292A
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Abstract
The invention discloses a magnetic component for a switch-type Hall sensor. The magnetic component comprises a magnetized arc magnetic steel which is positioned in the middle, each end of the arc magnetic steel attracts a non-magnetic conductive block, and a tile-shaped structure is formed between the two conductive blocks and the arc magnetic steel. The magnetic component overcomes the defects that two opposite polarities are difficult to be magnetized in the same magnetic steel and the critical surface of the position where the polarities are opposite is out of control. The magnetic component has the advantages that a magnetizing process is easy to control, the cost is low, and the percent of pass and the utilization rate of materials are high.
Description
Technical field
The present invention relates to a kind of magnet assembly, particularly a kind of magnet assembly that is applied to Hall element.
Background technology
Hall element is a kind of magnetic field sensor of making according to Hall effect.Adopt the element of semi-conducting material manufacturing to be called Hall element according to Hall effect, Hall element have to magnetic-field-sensitive, simple in structure, volume is little, frequency response is wide, output voltage changes greatly and advantage such as long service life, so has obtained extensive use in fields such as measurement, automation, computer and information technologies.
Hall element is divided into linear hall element and switching Hall components usually.Wherein, linear hall element movement, rotation or magnetic field in uniform magnetic field are moved, are rotated around fixing Hall element, can produce the Hall voltage of straight-line displacement and corner displacement, therefore can be used to measure straight-line displacement and angular displacement.In like manner, switching Hall components only need can make the Hall voltage generation saltus step of output from the Movement in Magnetic Field of a polarity to the magnetic field of another polarity.
Hall sensor is achieved and must relies on external magnetic field, and in order to be met the magnetic field of different hall principles, often the pole piece with magnet steel is designed to special shape, realizes the output of Hall voltage according to different magnetizing directions.Hall element has a variety of, and corresponding magnet steel also has a variety of, and common have column type, circular arc type, long strip type etc.The processing of the magnet steel of these types is than being easier to, and it is also simple and easy to control relatively to magnetize.
A kind of novel magnet steel operational mode has appearred in the market, as shown in Figure 1, magnet steel is the tile shape structure, Hall element is switching mode, is fixed on the magnet steel exterior arc surface, and magnet steel middle part polarity is opposite with both sides polarity, magnet steel rotates along axis, no matter be to rotate from the left side or rotate from the right side, when turning to polarity when locating on the contrary, saltus step all takes place in Hall voltage.Yet fill quite difficulty of two different directions magnetic field technologies at a slice magnet steel, and the opposite very difficult control of critical point of polarity of the magnetic field, qualification rate is very low, and compares waste material, causes increasing of production cost.
Summary of the invention
The technical problem that the present invention solves provides that a kind of technology that magnetizes is easy to control, qualification rate height, stock utilization height and magnet assembly with low cost.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows.
The Hall switch sensor magnet assembly comprises the arc magnet steel that is positioned at the middle part and is filled with magnetic, and the two ends of arc magnet steel are the non-magnetic magnetic inductive block of adhesive a slice respectively; Form the tile shape structure between described two magnetic inductive blocks and the arc magnet steel.
Owing to adopted above technical scheme, the invention technological progress is as follows.
The present invention has overcome in the existing structure critical surface uncontrollable shortcoming of filling two opposite polarities and the opposite place of polarity on the same block of magnet steel, the form that magnet steel, magnet steel two ends arrange magnetic inductive block in the middle of adopting, magnet assembly is set, not only save comparatively expensive magnetic steel material, reduced production cost; And adopting when magnetizing the routine technology that magnetizes only to magnetize to middle magnet steel and get final product, qualification rate improves greatly.
Description of drawings
Fig. 1 is tile shape magnet steel magnetic line of force distribution schematic diagram in the prior art.
Fig. 2 is structural representation of the present invention and magnetic line of force distribution schematic diagram.
Fig. 3 is the magnetize magnetic line of force distribution schematic diagram of mode of another kind of the present invention.
Wherein: 1, switching Hall components, 2, magnet steel, 3, critical surface, 4, the magnetic line of force, 5, magnetic inductive block.
Embodiment
Below in conjunction with specific embodiments and the drawings, the present invention is further elaborated.
A kind of Hall switch sensor magnet assembly comprises a slice arc magnet steel 2 and two magnetic inductive blocks 5.Arc magnet steel 2 is positioned at the middle part, and radially is filled with magnetic; Two magnetic inductive blocks 5 are pull-in on the two ends of arc magnet steel 2 respectively, do not magnetize on the magnetic inductive block.Form the tile shape structure between two magnetic inductive blocks 5 and the arc magnet steel 2, arc magnet steel 2 and two magnetic inductive blocks 5 are pulled together, and reach the instructions for use of magnetizing at a slice arc magnet steel 2.
Hall switch sensor has two kinds of modes that magnetize with magnet assembly, and wherein a kind of mode of magnetizing is that to make the exterior arc surface of magnet steel be the N utmost point, and inner arc surface is the S utmost point, this kind magnetize mode magnetic line of force distribution form as shown in Figure 2.Because magnet steel 2 and two magnetic inductive blocks 5 are pulled together, the magnetic line of force 4 of generation makes that by magnetic inductive block 5 exterior arc surface is the S utmost point in magnetic inductive block 5, and inner arc surface is the N utmost point.Switching Hall components 1 is near magnet steel 2, and magnet steel 2 rotates along axis, and when turning to opposite polarity critical surface 3 through switching Hall components 1, the Hall voltage of switching Hall components 1 output will be from the high level saltus step to low level.
The another kind mode of magnetizing is that to make the exterior arc surface of magnet steel be the S utmost point, and inner arc surface is the N utmost point, this kind magnetize mode magnetic line of force distribution form as shown in Figure 3.The magnetic line of force 4 makes that magnetic inductive block 5 exterior arc surfaces are the N utmost point after passing magnetic inductive block 5, and inner arc surface is the S utmost point.When magnet steel 2 turned to opposite polarity critical surface 3 through switching Hall components 1, the Hall voltage of switching Hall components 1 output will be from low transition to high level.
The magnetic line of force of the present invention during by the both sides magnetic inductive block direction nature opposite with the magnetic line of force polarity of passing the centre magnet steel, when moving to opposite polarity position, saltus step just takes place in Hall switch voltage, satisfies instructions for use.The Angular Dimension of the critical surface at the opposite place of Semi-polarity of the present invention namely is the Angular Dimension of magnet steel and magnetic inductive block junction, therefore critical surface can be controlled by the process of making magnet assembly, with respect to carrying out the setting of critical surface by the mode of magnetizing, than being easier to control.
Claims (1)
1. a Hall switch sensor magnet assembly is characterized in that: comprise the arc magnet steel (2) that is positioned at the middle part and is filled with magnetic, the two ends difference non-magnetic magnetic inductive block of adhesive a slice (5) of arc magnet steel (2); Form the tile shape structure between described two magnetic inductive blocks (5) and the arc magnet steel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102291242A CN103280292A (en) | 2013-06-08 | 2013-06-08 | Magnetic component for switch-type Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102291242A CN103280292A (en) | 2013-06-08 | 2013-06-08 | Magnetic component for switch-type Hall sensor |
Publications (1)
| Publication Number | Publication Date |
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| CN103280292A true CN103280292A (en) | 2013-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2013102291242A Pending CN103280292A (en) | 2013-06-08 | 2013-06-08 | Magnetic component for switch-type Hall sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576933A (en) * | 2023-07-14 | 2023-08-11 | 微传智能科技（常州）有限公司 | Intelligent metering method for measuring flow and flow direction |
Citations (7)
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| US20030137381A1 (en) * | 2002-01-23 | 2003-07-24 | Inao Toyoda | Revolution detecting device |
| CN1781013A (en) * | 2003-02-14 | 2006-05-31 | Bei传感器及系统有限公司 | Position sensor utilizing a linear hall-effect sensor |
| CN2900289Y (en) * | 2006-04-20 | 2007-05-16 | 西南大学 | Electronic turning sensor |
| CN101354234A (en) * | 2007-07-25 | 2009-01-28 | 约翰尼斯海登海恩博士股份有限公司 | Rotary encoder and method for its operation |
| CN101416029A (en) * | 2006-04-07 | 2009-04-22 | 西门子公司 | Sensor device for an electric machine |
| CN102537341A (en) * | 2011-12-26 | 2012-07-04 | 联合汽车电子有限公司 | Neutral position sensor |
| CN203311967U (en) * | 2013-06-08 | 2013-11-27 | 无锡隆盛科技股份有限公司 | Magnetic assembly for switch type Hall sensor |
-
2013
- 2013-06-08 CN CN2013102291242A patent/CN103280292A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030137381A1 (en) * | 2002-01-23 | 2003-07-24 | Inao Toyoda | Revolution detecting device |
| CN1781013A (en) * | 2003-02-14 | 2006-05-31 | Bei传感器及系统有限公司 | Position sensor utilizing a linear hall-effect sensor |
| CN101416029A (en) * | 2006-04-07 | 2009-04-22 | 西门子公司 | Sensor device for an electric machine |
| CN2900289Y (en) * | 2006-04-20 | 2007-05-16 | 西南大学 | Electronic turning sensor |
| CN101354234A (en) * | 2007-07-25 | 2009-01-28 | 约翰尼斯海登海恩博士股份有限公司 | Rotary encoder and method for its operation |
| CN102537341A (en) * | 2011-12-26 | 2012-07-04 | 联合汽车电子有限公司 | Neutral position sensor |
| CN203311967U (en) * | 2013-06-08 | 2013-11-27 | 无锡隆盛科技股份有限公司 | Magnetic assembly for switch type Hall sensor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116576933A (en) * | 2023-07-14 | 2023-08-11 | 微传智能科技（常州）有限公司 | Intelligent metering method for measuring flow and flow direction |
| CN116576933B (en) * | 2023-07-14 | 2023-10-20 | 微传智能科技（常州）有限公司 | Intelligent metering method for measuring flow and flow direction |
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Application publication date: 20130904 |