CN203311967U - Magnetic assembly for switch type Hall sensor - Google Patents
Magnetic assembly for switch type Hall sensor Download PDFInfo
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- CN203311967U CN203311967U CN2013203318695U CN201320331869U CN203311967U CN 203311967 U CN203311967 U CN 203311967U CN 2013203318695 U CN2013203318695 U CN 2013203318695U CN 201320331869 U CN201320331869 U CN 201320331869U CN 203311967 U CN203311967 U CN 203311967U
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- magnet steel
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Abstract
The utility model discloses a magnetic assembly for a switch type Hall sensor. The magnetic assembly comprises cambered magnetic steel located at the middle part and having magnetism, and a magnetic block without magnetism is respectively sucked at the two ends of the cambered magnetic steel; a tile-shaped structure is formed between the two magnetic blocks and the cambered magnetic steel. The magnetic assembly disclosed by the utility model overcomes the defects of the existing structure that two opposite polarities are filled on the same magnetic steel and the critical plane at the opposite polarity site cannot be controlled, and has the advantages that the magnetization process is easy to control, cost is low, and percent of pass and material utilization rate are high.
Description
Technical field
The utility model 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.According to Hall effect, adopt the element of semi-conducting material manufacturing to be called Hall element, Hall element has magnetic-field-sensitive, simple in structure, volume is little, frequency response is wide, output voltage changes greatly and the advantage such as long service life, so is widely applied 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 moves in uniform magnetic field, rotation or magnetic field are moved, 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 to, from the Movement in Magnetic Field of a polarity to the magnetic field of another polarity, can make the Hall voltage generation of exporting saltus step.
Hall sensor is achieved and must relies on external magnetic field, in order to be met the magnetic field of different hall principles, often the pole piece of magnet steel is designed to special shape, according to different magnetizing directions, realizes the output of Hall voltage.Hall element has a variety of, and corresponding magnet steel also has a variety of, common are column type, circular arc type, long strip type etc.The magnet steel processing of these types, than being easier to, is magnetized also relatively simple and easy to control.
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, be no matter from left side, rotate or rotate from right side, when turning to polarity and locate on the contrary, saltus step all occurs in Hall voltage.Yet on a slice magnet steel, fill two different directions magnetic field technique difficults, and opposite very difficult control of critical point of polarity of the magnetic field, qualification rate is very low, and relatively wastes material, causes increasing of production cost.
Summary of the invention
The technical problem that the utility model solves is to provide the magnet assembly that a kind of technique that magnetizes is easy to control, qualification rate is high, stock utilization is high and with low cost.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
The Hall switch sensor magnet assembly comprises and is positioned at middle part and fills magnetic arc magnet steel that the two ends of arc magnet steel are the non-magnetic magnetic inductive block of adhesive a slice respectively; Between described two magnetic inductive blocks and arc magnet steel, form the tile shape structure.
Owing to having adopted above technical scheme, the obtained technological progress of the utility model is as follows.
The utility model has overcome in the existing structure to the critical surface uncontrollable shortcoming of filling two opposite polarities and the opposite place of polarity on the same 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 while magnetizing the routine technique that magnetizes only to middle magnet steel, to magnetize and get final product, qualification rate improves greatly.
The accompanying drawing explanation
Fig. 1 is tile shape magnet steel magnetic line of force distribution schematic diagram in prior art.
Fig. 2 is structural representation of the present utility model and magnetic line of force distribution schematic diagram.
Fig. 3 is the magnetize magnetic line of force distribution schematic diagram of mode of the utility model another kind.
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 utility model is further elaborated.
A kind of Hall switch sensor magnet assembly, comprise a slice arc magnet steel 2 and two magnetic inductive blocks 5.Arc magnet steel 2 is positioned at middle part, and radially is filled with magnetic; Two magnetic inductive blocks 5 are pull-in on respectively the two ends of arc magnet steel 2, do not magnetize on magnetic inductive block.Between two magnetic inductive blocks 5 and arc magnet steel 2, form the tile shape structure, arc magnet steel 2 and two magnetic inductive blocks 5 are pulled together, and reach the instructions for use of magnetizing on 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 is by magnetic inductive block 5, and making exterior arc surface in magnetic inductive block 5 is the S utmost point, 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 passes after magnetic inductive block 5 and makes magnetic inductive block 5 exterior arc surfaces is the N utmost point, 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 utility model magnetic line of force 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 occurs in Hall switch voltage, meets instructions for use.The Angular Dimension of the critical surface at the opposite place of the utility model Semi-polarity is namely 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 by the mode of magnetizing, carrying out the setting of critical surface, control than being easier to.
Claims (1)
1. a Hall switch sensor magnet assembly, is characterized in that: comprise and be positioned at middle part and fill magnetic arc magnet steel (2), the two ends difference non-magnetic magnetic inductive block of adhesive a slice (5) of arc magnet steel (2); Between described two magnetic inductive blocks (5) and arc magnet steel (2), form the tile shape structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203318695U CN203311967U (en) | 2013-06-08 | 2013-06-08 | Magnetic assembly for switch type Hall sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203318695U CN203311967U (en) | 2013-06-08 | 2013-06-08 | Magnetic assembly for switch type Hall sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203311967U true CN203311967U (en) | 2013-11-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203318695U Expired - Lifetime CN203311967U (en) | 2013-06-08 | 2013-06-08 | Magnetic assembly for switch type Hall sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203311967U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280292A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Magnetic component for switch-type Hall sensor |
-
2013
- 2013-06-08 CN CN2013203318695U patent/CN203311967U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280292A (en) * | 2013-06-08 | 2013-09-04 | 无锡隆盛科技股份有限公司 | Magnetic component for switch-type Hall sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |