CN2817078Y - Magnetic conductive metal proximity transducer - Google Patents
Magnetic conductive metal proximity transducer Download PDFInfo
- Publication number
- CN2817078Y CN2817078Y CN 200520104821 CN200520104821U CN2817078Y CN 2817078 Y CN2817078 Y CN 2817078Y CN 200520104821 CN200520104821 CN 200520104821 CN 200520104821 U CN200520104821 U CN 200520104821U CN 2817078 Y CN2817078 Y CN 2817078Y
- Authority
- CN
- China
- Prior art keywords
- magnet
- conductive metal
- magnetic conductive
- guide tube
- fixed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a magnetic conductive metal proximity sensor which is characterized in that a movable magnet is arranged in a guide tube made from a nonmagnetic conductive material, and a fixed magnet of opposite polarity with the movable magnet is arranged outside the guide tube, wherein one end of the guide tube is closed to form an inducting surface, and the movable magnet can slide in the guide tube; the other side of the outer wall of the guide tube is fixedly provided with a hall element, and a circuit of the hall element is connected with a sensing circuit. When no magnetic conductive metal approaches the inducting surface, the movable magnet and the fixed magnet are attracted with each other to maintain in fixed positions, for lack of a vertical magnetic force line which penetrates through the hall element, the hall element is in a closed state, and the sensing circuit is absence of new electrical signals; when the magnetic conductive metal approaches the inducting surface, the movable magnet can overcome the attracting force with the fixed magnet to slide in the guide tube toward the inducting surface to be adjacent to the magnetic conductive metal so that a magnetic force line of the movable magnet vertically penetrate through the hall element which is in an open state and the new electrical signals are in the sensing circuit. The utility model has the advantages of simple structure and low cost. The sensor can be miniaturized.
Description
One, technical field
The utility model relates to a kind of transducer, is specifically related to a kind of magnetic conductive metal transducer.
Two, background technology
At present, a lot of near the kind of switch, inductance type, condenser type, magnetic, photoelectricity, Hall etc. are arranged.Relevant with present technique is inductance approach switch, also claims eddy current type near switch, is primarily aimed at the approaching of conducting metal and detects.Because magnetic conductive metal all conducts electricity, so can compare with inductance approach switch.Inductance type transducer is made up of oscillator, switching circuit and amplification output circuit.Its shortcoming is that volume is big, cost is high, is difficult for the transducer miniaturization, so be suitable for volume is not had the harsh place that requires.
Three, summary of the invention
The purpose of this utility model is in order to overcome the deficiency of prior art, to provide a kind of simple in structure, and cost is low, magnetic conductive metal proximity transducer that can miniaturization.
The utility model magnetic conductive metal proximity transducer, it is characterized in that: it is in the conduit that a non-magnet material is made a moving magnet to be set, a fixed magnet is set outside described conduit, described moving magnet is much larger than described fixed magnet, and polarity is provided with on the contrary, described conduit one end sealing is sensitive surface, described moving magnet can slide in described conduit, described fixed magnet is fixed on a side of described conduit outer wall, the opposite side of described conduit outer wall, face the position of described fixed magnet, fixedly install the unipolarity switching Hall components, described unipolarity switching Hall components is connected in the sensing circuit.
Operation principle is: when not having magnetic conductive metal near the utility model sensitive surface, moving magnet is inhaled and fixed-site mutually with fixed magnet, the unipolarity switching Hall components is positioned at the middle part of moving magnet, the magnetic line of force of moving magnet is the parallel unipolarity switching Hall components that passes, this element is in closed condition, does not have the new signal of telecommunication in the sensing circuit.When magnetic conductive metal during near the utility model sensitive surface, because moving magnet is greater than fixed magnet, moving magnet will overcome the suction with fixed magnet, in conduit, slide to sensitive surface, close with magnetic conductive metal, the unipolarity switching Hall components is positioned at an end of moving magnet, and this moment, the magnetic line of force of moving magnet was vertically to pass the unipolarity switching Hall components, this element is in open mode, and the new signal of telecommunication is arranged in the sensing circuit.
The utility model has the advantages that: simple in structure, cost is low, transducer can be accomplished microminiaturization.
Four, description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is the structural representation of the utility model static state;
Fig. 2 is the dynamic structural representation of the utility model.
Circuit diagram when Fig. 3 is the utility model static state;
Fig. 4 is the circuit diagram of the utility model when dynamic;
Five, embodiment
As depicted in figs. 1 and 2, the utility model magnetic conductive metal proximity transducer, it is in the conduit 1 that a non-magnet material is made a moving magnet 2 to be set, a fixed magnet 3 is set outside the conduit 1, moving magnet 2 is much larger than fixed magnet 3, and polarity is provided with on the contrary, the sealing of conduit 1 one ends is sensitive surface 4, moving magnet 2 can slide in conduit 1, fixed magnet 3 is fixed on a side of conduit 1 outer wall, and the opposite side of conduit 1 outer wall faces the position of fixed magnet 3, fixedly install unipolarity switching Hall components 5, the unipolarity switching Hall components is connected in the sensing circuit 6.
The utility model is not when having magnetic conductive metal near the utility model sensitive surface 4, and moving magnet 2 is inhaled and fixed-site mutually with fixed magnet 3.Unipolarity switching Hall components 5 is positioned at the middle part of moving magnet 2, and the magnetic line of force of moving magnet 2 is the parallel unipolarity switching Hall components 5 that pass, and this element 5 is in closed condition, does not have the new signal of telecommunication in the transducing signal circuit 6.When magnetic conductive metal during near the utility model sensitive surface 4, because moving magnet 2 is greater than fixed magnet 3, moving magnet 2 will overcome the suction with fixed magnet 3, in conduit 1, slide to sensitive surface 4, close with magnetic conductive metal, unipolarity switching Hall components 5 is positioned at an end of moving magnet 2, and this moment, the magnetic line of force of moving magnet 2 was vertically to pass unipolarity switching Hall components 5, this element 5 is in open mode, and new signal is arranged in the transducing signal circuit 6.
Claims (1)
1, a kind of magnetic conductive metal proximity transducer, it is characterized in that: it is that a moving magnet is set in the conduit of a non-magnetizer material, a fixed magnet is set outside described conduit, described moving magnet is much larger than described fixed magnet, and polarity is provided with on the contrary, described conduit one end sealing is sensitive surface, described moving magnet can slide in described conduit, described fixed magnet is fixed on a side of described conduit outer wall, the opposite side of described conduit outer wall, the fixed-site that faces described fixed magnet is provided with the unipolarity switching Hall components, and described unipolarity switching Hall components is connected in the sensing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104821 CN2817078Y (en) | 2005-08-01 | 2005-08-01 | Magnetic conductive metal proximity transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520104821 CN2817078Y (en) | 2005-08-01 | 2005-08-01 | Magnetic conductive metal proximity transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2817078Y true CN2817078Y (en) | 2006-09-13 |
Family
ID=36996888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520104821 Expired - Fee Related CN2817078Y (en) | 2005-08-01 | 2005-08-01 | Magnetic conductive metal proximity transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2817078Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130071A1 (en) * | 2009-05-14 | 2010-11-18 | Zeng Weidong | Positioning method and system based on hall element |
| CN103448668A (en) * | 2012-05-30 | 2013-12-18 | 株式会社有信 | Electric steering lock device |
| CN108847838A (en) * | 2018-09-02 | 2018-11-20 | 广东美控电子科技有限公司 | Universal no machinery positioning Hall switch |
-
2005
- 2005-08-01 CN CN 200520104821 patent/CN2817078Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010130071A1 (en) * | 2009-05-14 | 2010-11-18 | Zeng Weidong | Positioning method and system based on hall element |
| CN103448668A (en) * | 2012-05-30 | 2013-12-18 | 株式会社有信 | Electric steering lock device |
| CN108847838A (en) * | 2018-09-02 | 2018-11-20 | 广东美控电子科技有限公司 | Universal no machinery positioning Hall switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |