CN203053525U - MR magneto-resistor magneto-dependent sensor - Google Patents
MR magneto-resistor magneto-dependent sensor Download PDFInfo
- Publication number
- CN203053525U CN203053525U CN 201320047610 CN201320047610U CN203053525U CN 203053525 U CN203053525 U CN 203053525U CN 201320047610 CN201320047610 CN 201320047610 CN 201320047610 U CN201320047610 U CN 201320047610U CN 203053525 U CN203053525 U CN 203053525U
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- magnetic resistance
- magneto
- permanent magnet
- shell
- float
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Abstract
The utility model discloses a MR magneto-resistor magneto-dependent sensor which comprises an outer shell, an MR magneto-resistor and a floater. The outer shell is arranged to be of tube shape with a closed single end, the MR magneto-resistor is arranged inside the outer shell and externally connected with an electric wire, the outer shell is filled with resin, the floater is arranged to be of a ring shape, a permanent magnet is arranged on the inner side face of the floater, the outer shell penetrates through the floater, and the permanent magnet on the inner side face of the floater is matched with the MR magneto-resistor inside the outer shell to move. The MR magneto-resistor magneto-dependent sensor is high in stability, long in service life, high in reliability, and beneficial for production and popularization.
Description
Technical field
The utility model relates to a kind of sensor, in particular a kind of MR magnetic resistance magneto-dependent sensor.
Background technology
Equipment in the daily life need be monitored water level, for example washing machine, air conditioner etc.Magnetosensitive water level monitor life-span of the prior art is short, and the immersion resistance to pressure is poor, and long period of soaking occurs sensitivity easily and reduces in water, even problem such as can't work; Existing magnetosensitive water level monitor complex structure, maintenance is inconvenient; Existing magnetosensitive level switch ubiquity defective insulation, problem such as break-make is bad.
Therefore, prior art has yet to be improved and developed.
The utility model content
The purpose of this utility model is to provide a kind of MR magnetic resistance magneto-dependent sensor, is intended to solve existing magnetosensitive water level monitor complex structure, technical matterss such as immersion resistance to pressure and poor stability.
The technical solution of the utility model is as follows: a kind of MR magnetic resistance magneto-dependent sensor comprises shell, MR magnetic resistance, float, wherein, described shell is arranged to single-ended closed tubulose, described MR magnetic resistance places enclosure, MR magnetic resistance external cord, and described shell is filled by resin; Described float is arranged to ring-type, and the float medial surface is provided with permanent magnet, and described shell passes float, the MR magnetic resistance interoperation in the permanent magnet of described float medial surface and the shell.
Described MR magnetic resistance magneto-dependent sensor, wherein, described shell upper end arranges limited block, and the shell lower end is provided with spacing ring, and the shell lower end is provided with groove, and spacing ring is stuck in the groove fixing.
Described MR magnetic resistance magneto-dependent sensor, wherein, described permanent magnet is arranged to annular, and permanent magnet is concentric with float.
Described MR magnetic resistance magneto-dependent sensor, wherein, described permanent magnet surfaces flux density is greater than 80mT, and permanent magnet thickness is less than 6mm, and the density of the integral body that described float and permanent magnet are formed is less than 0.7g/m
3
Described MR magnetic resistance magneto-dependent sensor, wherein, described MR magnetic resistance vertically is arranged on enclosure, and the lead-in wire on the MR magnetic resistance welds with electric wire respectively, the distance of MR magnetic resistance and electric wire weld is greater than 4mm, and the distance of MR magnetic resistance and electric wire weld is less than the hollow height of enclosure.
Described MR magnetic resistance magneto-dependent sensor, wherein, described shell aperture end is provided with the rotation sliding sleeve of securing electric lines.
The beneficial effects of the utility model: the utility model is filled shell by utilizing resin, is conducive to the MR magnetic resistance in stable and the protecting sheathing, avoids the MR magnetic resistance to contact water with electric wire, improves the stability of MR magnetic resistance magneto-dependent sensor, prolongs its serviceable life; The utility model cooperates with the MR magnetic resistance greater than 80mT and the thickness permanent magnet less than 6mm by surperficial flux density is set, and is conducive to increase the sensitivity of MR magnetic resistance magneto-dependent sensor; The utility model is conducive to improve the stability of MR magnetic resistance magneto-dependent sensor by the position of MR magnetic resistance in shell and the welding position of MR magnetic resistance and electric wire rationally are set, and avoids resin to influence the reliability that the MR magnetic resistance is connected with electric wire.
Description of drawings
Fig. 1 is the structural representation of MR magnetic resistance magneto-dependent sensor in the utility model.
Fig. 2 is the internal view of MR magnetic resistance magneto-dependent sensor in the utility model.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, clear and definite, below further describe with reference to the accompanying drawing the utility model of embodiment that develops simultaneously.
As depicted in figs. 1 and 2, described MR magnetic resistance magneto-dependent sensor comprises shell 100, MR magnetic resistance 220, float 300, permanent magnet 400, spacing ring 500, limited block 600, rotation sliding sleeve 700; Shell 100 is arranged to single-ended closed tubulose, and MR magnetic resistance 220 is vertically put into shell 100 after welding with electric wire 800; In the present embodiment, described float 300 is arranged to ring-type, and permanent magnet 400 is arranged on float 300 medial surfaces, and is concrete, and permanent magnet 400 is arranged to circular, permanent magnet 400 and float 300 concentrics; Described shell 100 passes float 300, break away from shell 100 for fear of float in real work 300, shell 100 upper ends arrange the distance that limited block 600 moves upward with restriction float 300, MR magnetic resistance 220 in the shell 100 and permanent magnet 400 interoperations of float 300 medial surfaces: float 300 slides at shell 100, thereby driving permanent magnet 400 slides on shell 100 surfaces, when permanent magnet 400 passes through the position at MR magnetic resistance 220 places in the shells 100, MR magnetic resistance 220 is subjected to the influence of magnetic field of permanent magnet 400, and MR magnetic resistance 220 sends level signal; During the position at MR magnetic resistance 220 places in permanent magnet 400 slides off shell 100, MR magnetic resistance 220 is not subjected to the influence of magnetic field of permanent magnet 400, and the MR magnetic resistance stops the transmission level signal.
In order to increase the sensitivity of MR magnetic resistance magneto-dependent sensor described in the utility model, described permanent magnet 400 is made by disposable the magnetizing in Ferrite Material two sides, and described permanent magnet 400 surperficial flux density are greater than 80mT, and permanent magnet 400 thickness are less than 6mm.
In the present embodiment, the distance of described MR magnetic resistance 220 and electric wire 800 welds is greater than 4mm, the distance of MR magnetic resistance 220 and electric wire 800 welds is less than the height of shell 100 borings, during concrete enforcement, MR magnetic resistance 220 can be set according to actual needs at the height of shell 100 inside, MR magnetic resistance 220 is arranged on the top of shell 100 inside, perhaps MR magnetic resistance 220 is arranged on the bottom of shell 100 inside; MR magnetic resistance 220 is arranged on the top of shell 100 in the present embodiment, and MR magnetic resistance 220 is 5mm with the distance of electric wire 800 welds.
Further, in order to limit the distance that float 300 moves downward, described shell 100 lower ends are provided with spacing ring 500, and shell 100 lower ends are provided with groove, and spacing ring 500 is stuck in the groove fixing.
Further, for securing electric lines, increase the stability of MR magnetic resistance magneto-dependent sensor described in the utility model, at shell 100 openends rotation sliding sleeve 700 is set.
When MR magnetic resistance magneto-dependent sensor described in the utility model is worked, electric wire 800 connects control circuit, MR magnetic resistance magneto-dependent sensor is vertically placed, shell 100 lower ends of MR magnetic resistance magneto-dependent sensor are immersed in the liquid, set the position of MR magnetic resistance magneto-dependent sensor, after leaving standstill, float 300 be in spacing ring 500 above, be close to spacing ring 500, because MR magnetic resistance 220 places the top of shell 100 inside, MR magnetic resistance 220 is not subjected to the influence of permanent magnet 400, and MR magnetic resistance 220 does not externally send signal, float 300 is subjected to buoyancy of liquid, and float 300 floats on the liquid level and with liquid level rising or decline and rises or descend; When liquid level rises, float 300 rises with liquid level, place the permanent magnet 400 in the float 300 to rise, when permanent magnet 400 rises to the position of MR magnetic resistance 220, MR magnetic resistance 220 is subjected to the influence in the magnetic field of permanent magnet 400, MR magnetic resistance 220 sends level signal, and the control circuit that electric wire 800 connects is received the level signal that MR magnetic resistance 220 sends, control circuit work.
Rise or descend for float 300 can be risen or descend with liquid level, the assembly density of float 300 and permanent magnet 400 is less than 0.7g/m
3
MR magnetic resistance magneto-dependent sensor described in the utility model can be used for the monitoring of water level monitoring or oil level, and concrete MR magnetic resistance magneto-dependent sensor described in the utility model can be used for the washing machine water level monitoring, and cooling water car cylinder water level monitoring, air cooler are with water level monitoring etc.
The utility model is filled shell 100 by utilizing resin, is conducive to the MR magnetic resistance 220 in stable and the protecting sheathing 100, avoids MR magnetic resistance 220 to contact water with electric wire 800, improves the stability of MR magnetic resistance magneto-dependent sensor, prolongs its serviceable life; The utility model cooperates with MR magnetic resistance 220 greater than 80mT and the thickness permanent magnet 400 less than 6mm by surperficial flux density is set, and is conducive to increase the sensitivity of MR magnetic resistance magneto-dependent sensor; The utility model is by rationally arranging the position of MR magnetic resistance 220 in shell 100 and the welding position of MR magnetic resistance 220 and electric wire 800, be conducive to improve the stability of MR magnetic resistance magneto-dependent sensor, avoid resin to influence the connection reliability of MR magnetic resistance 220 and electric wire 800.
Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or conversion, all these improvement and conversion all should belong to the protection domain of the utility model claims.
Claims (6)
1. a MR magnetic resistance magneto-dependent sensor comprises shell, MR magnetic resistance, float, it is characterized in that, described shell is arranged to single-ended closed tubulose, and described MR magnetic resistance places enclosure, MR magnetic resistance external cord, and described shell is filled by resin; Described float is arranged to ring-type, and the float medial surface is provided with permanent magnet, and described shell passes float, the MR magnetic resistance interoperation in the permanent magnet of described float medial surface and the shell.
2. MR magnetic resistance magneto-dependent sensor according to claim 1 is characterized in that, described shell upper end arranges limited block, and the shell lower end is provided with spacing ring, and the shell lower end is provided with groove, and spacing ring is stuck in the groove fixing.
3. MR magnetic resistance magneto-dependent sensor according to claim 2 is characterized in that described permanent magnet is arranged to annular, and permanent magnet is concentric with float.
4. MR magnetic resistance magneto-dependent sensor according to claim 3 is characterized in that, described permanent magnet surfaces flux density is greater than 80mT, and permanent magnet thickness is less than 6mm, and the density of the integral body that described float and permanent magnet are formed is less than 0.7g/m
3
5. MR magnetic resistance magneto-dependent sensor according to claim 4, it is characterized in that, described MR magnetic resistance vertically is arranged on enclosure, lead-in wire on the MR magnetic resistance welds with electric wire respectively, the distance of MR magnetic resistance and electric wire weld is greater than 4mm, and the distance of MR magnetic resistance and electric wire weld is less than the hollow height of enclosure.
6. according to any described MR magnetic resistance magneto-dependent sensor of claim 1-5, it is characterized in that described shell aperture end is provided with the rotation sliding sleeve of securing electric lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047610 CN203053525U (en) | 2013-01-29 | 2013-01-29 | MR magneto-resistor magneto-dependent sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320047610 CN203053525U (en) | 2013-01-29 | 2013-01-29 | MR magneto-resistor magneto-dependent sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053525U true CN203053525U (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320047610 Expired - Fee Related CN203053525U (en) | 2013-01-29 | 2013-01-29 | MR magneto-resistor magneto-dependent sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053525U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014114259A1 (en) * | 2013-01-25 | 2014-07-31 | 江苏多维科技有限公司 | Digital liquid-level sensor |
-
2013
- 2013-01-29 CN CN 201320047610 patent/CN203053525U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014114259A1 (en) * | 2013-01-25 | 2014-07-31 | 江苏多维科技有限公司 | Digital liquid-level sensor |
| US11035716B2 (en) | 2013-01-25 | 2021-06-15 | MultiDimension Technology Co., Ltd. | Digital liquid-level sensor having at least one tunneling magnetoresistance switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20180129 |