CN203659562U - Non-contact type line-marking potentiometer - Google Patents
Non-contact type line-marking potentiometer Download PDFInfo
- Publication number
- CN203659562U CN203659562U CN201320838046.1U CN201320838046U CN203659562U CN 203659562 U CN203659562 U CN 203659562U CN 201320838046 U CN201320838046 U CN 201320838046U CN 203659562 U CN203659562 U CN 203659562U
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- dwang
- permanent magnet
- potentiometer
- contactless line
- slide block
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 10
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- 238000010438 heat treatment Methods 0.000 claims description 3
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- 239000011159 matrix material Substances 0.000 description 6
- 229920003023 plastic Polymers 0.000 description 6
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- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
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Abstract
The utility model discloses a non-contact type line-marking potentiometer. The non-contact type line-marking potentiometer comprises a sliding block, a rotary rod, a guiding rod, a tunneling magnetoresistance sensor, a permanent magnet, a printing circuit boards and two bases, wherein the sliding block slides along the rotary rod and the guiding rod so as to drive the rotary rod to rotate; the permanent magnet is positioned at one end of the rotary rod and also rotates along with the rotary rod; the tunneling magnetoresistance sensor is adjacent to the permanent magnet, is welded on the printing circuit board and is used for measuring the rotating angle of the permanent magnet; the guiding rod is used for providing the sliding direction for the sliding block; the two bases are positioned at the two ends of the rotary rod and the guiding rod and are used for fixing the rotary rod and the guiding rod; and a ball, a pin and a spring piece are assembled between the sliding block and the rotary rod. The non-contact type line-marking potentiometer disclosed by the utility model has the advantages that the structure is compact, the manufacture is simple, the service life is long and smooth and comfortable sliding handfeel can be brought for a user and the like.
Description
Technical field
The utility model relates to a kind of line potentiometer, refers in particular to a kind of contactless line potentiometer that straight-line displacement is changed into anglec of rotation displacement and detects by tunnel magneto resistance transducer.
Background technology
Potentiometer is a kind of new electronic component, has that linearity index is high, reliability index high, can be applicable in the field such as Aeronautics and Astronautics and precision instrumentation.Along with scientific and technological development, active demand long-life, high-performance, highly reliable potentiometer.At present, the research of rotating potentiometer has obtained significant progress, and relative less with making to the research of linear sliding potentiometer.
In prior art, linear sliding potentiometer adopts brush structure, and the function of product is realized in the position of its change of form by linear slide brush.Chinese patent application 201010528601.1 " linear sliding potentiometer " discloses a kind of linear sliding potentiometer, this potentiometer comprises housing, the sliding axle that can move in housing and is arranged on the bus of drawing on housing, resistor element is installed in housing, and this resistor element comprises and is provided with the insulation board of conductor rail and is arranged on three hookup wires on insulation board.One end of sliding axle extend into one end that enclosure interior and sliding axle extend into enclosure interior brush assembly of electric is installed, this brush assembly of electric comprises the slide block being fixed on sliding axle, on this slide block, this is fixed with the reed being connected with brush, and brush contacts with the conductor rail on insulation board.Although this transducer can be realized the conversion of straight-line displacement and electronic signal, its complex structure, and useful life is short, and application especially frequently can not be applicable to slide.In this design basis, applicant has made some improvements this project organization again, one new patent application 201220557883.2 has been proposed, this Patent Application Publication a kind of coaxial duplex linear sliding potentiometer, this potentiometer comprises housing, conductive plastics matrix one and conductive plastics matrix two, be respectively arranged with a resistance at the lower surface of conductive plastics matrix one and the upper surface of conductive plastics matrix two, between conductive plastics matrix one and conductive plastics matrix two, be provided with the sliding bar that stretches out housing, one end that sliding bar stretches in housing is provided with slide block, slide block upper, downside is respectively arranged with two brushes separately.The voltage signal of this potentiometer output and the straight-line displacement of regulating shaft are linear, can realize the conversion that moves to the signal of telecommunication from machinery.Although its reliability increases with respect to the former, its structure is more complicated, and cost is also higher, and also fall short of useful life.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defect of the prior art, a kind of contactless line potentiometer of long service life is provided, compact conformation, the making of this potentiometer are simple, rectilinear motion can be converted into and rotate and realize the anglec of rotation by non-contacting tunnel magneto resistance transducer and detect, improve useful life thereby realize.
For achieving the above object, the utility model is achieved through the following technical solutions:
The utility model provides a kind of contactless line potentiometer, it is characterized in that, described contactless line potentiometer comprises slide block, dwang, tunnel magneto resistance transducer, permanent magnet and pedestal; Described slide block has the first through hole;
Described dwang is through described the first through hole, rotating being arranged on described pedestal in two ends of described dwang;
Described slide block slides along the axial direction of described dwang, and the slip of described slide block drives described dwang to rotate;
Described permanent magnet is positioned at one end of described dwang, follows described dwang and rotates together;
Described tunnel magneto resistance transducer is adjacent with described permanent magnet, rotates the magnetic field producing and the magnetic field detecting is converted into voltage signal output for detection of described permanent magnet.
Preferably, described contactless line potentiometer also comprises a guide post, and described slide block also has the second through hole; Described guide post, through described the second through hole, is parallel to described dwang, and its two ends are fixed on described pedestal.
Preferably, described tunnel magneto resistance transducer is twin shaft rotary magnetic transducer or two orthogonal single-shaft-rotation Magnetic Sensors.
Preferably, described permanent magnet be shaped as disc, annular or square.
Preferably, described tunnel magneto resistance transducer is the linear Magnetic Sensor of twin shaft.
Preferably, described permanent magnet be shaped as disc or annular.
Preferably, the central shaft of described tunnel magneto resistance transducer is identical with the central shaft of described permanent magnet, described dwang.
Preferably, the internal magnetization direction of described permanent magnet is vertical with the axial direction of described dwang.
Preferably, described contactless line potentiometer also includes ball, and it is between described slide block and described dwang.
Preferably, between described slide block and described dwang, be equipped with the pin for withstanding described ball, described pin can be along being parallel to the plane of described dwang and described guide post composition and sliding perpendicular to the axial direction of described dwang.
Preferably, between described slide block and described pin, be equipped with spring leaf.
Preferably, on described dwang, comprise helicla flute, described ball rolls along described helicla flute.
Preferably, utilize screw plate to rub the helix on described driving screw, adopt electroplating technology or Technology for Heating Processing to obtain the case hardness needing on described driving screw.
Preferably, the bottom of described contactless line potentiometer is provided with printed circuit board (PCB), also includes wiring pin on it, and described tunnel magneto resistance transducer is welded on described printed circuit board (PCB).
Preferably, described dwang is driving screw or torsion bar.
Compared with prior art, the utlity model has following beneficial effect:
1) of the present utility model simple in structure, be easy to make, cost is low;
2) linear slide displacement is converted into anglec of rotation displacement by the utility model, and carry out the anglec of rotation of sensing dwang by tunnel magneto resistance transducer, improved its linearity, also reduced power consumption;
3) the tunnel magneto resistance transducer in the utility model can be realized measurement without just contacting with dwang, thereby has improved useful life;
4) in the utility model, only need manual sliding block, allow it slide along dwang and guide post, this is simple to operate, be easy to realize.
The technical scheme that this product adopts is: by the principle applied in reverse of screw mandrel, using slide block as power source, drive dwang to rotate, thereby rectilinear motion is converted into circular motion.Between slide block and dwang, be equipped with ball, pin and spring leaf, the slide-and-guide of slide block is separately provided with a guide post.The effect of ball is to change sliding friction into rolling friction, reduces to greatest extent frictional force.Utilize spring leaf and slidably pin eliminate because of foozle and the gap that causes of assembling, ensure the accuracy of positive revesal.
Brief description of the drawings
In order to be illustrated more clearly in the technical scheme in the utility model embodiment technology, to the accompanying drawing of required use in embodiment technical description be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the surface structure schematic diagram of contactless line potentiometer in the utility model;
Fig. 2 is the internal structure schematic diagram of contactless line potentiometer in the utility model;
Fig. 3 is the position relationship generalized section of tunnel magneto resistance transducer and permanent magnet;
Fig. 4 is the output voltage of contactless line potentiometer in utility model and the graph of relation of the permanent magnet anglec of rotation;
Fig. 5 is the part sectioned view of contactless line potentiometer in the utility model;
Fig. 6 is the structural representation of replacing the torsion bar of driving screw.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, describe the utility model in detail.
Embodiment
Fig. 1 is the surface structure schematic diagram of the contactless line potentiometer in the utility model, and Fig. 2 is that this potentiometer is removed the internal structure schematic diagram after shell 13.This potentiometer comprises rotating dwang 1, slide block 2, fixed guide post 3, pedestal 4 and 5, and tunnel magneto resistance (tunnel magneto-resistance, TMR) transducer 9, permanent magnet 10, printed circuit board (PCB) 12.In the utility model specific embodiment, on dwang 1, there is spiral helicine projection or groove, the slip of slide block 2 can be converted into the rotation of dwang 1.In the present embodiment, dwang 1 is driving screw.Driving screw 1 is through the first through hole corresponding on slide block 2, and its two ends are rotating to be installed on pedestal 4 and 5, and one end of guide post 3 is fixed on pedestal 4, and the other end, through the second through hole corresponding on slide block 2, is fixed on pedestal 5.In the present embodiment, guide post 3 is parallel with driving screw 1.Handle 11 on moving slider 2 just can make slide block 2 slide along the axial direction (being the Z-direction 100 in Fig. 3) of driving screw 1 and guide post 3, thereby drives driving screw 1 to rotate, and permanent magnet 10 is positioned at one end of driving screw 1, also follows driving screw 1 and rotates together.Tunnel magneto resistance transducer 9 is adjacent with permanent magnet 10, is welded on printed circuit board (PCB) (PrintedCircuitBoard, PCB) 12, and as shown in Figure 2, printed circuit board (PCB) 12 is positioned at the bottom of this potentiometer, also includes wiring pin (not shown) on it.Tunnel magneto resistance transducer 9 can be twin shaft rotary magnetic transducer or two orthogonal single-shaft-rotation transducers, now the shape of permanent magnet 10 can be disc, annular or square, and the central shaft of tunnel magneto resistance transducer 9 is identical with the central shaft of permanent magnet 10, driving screw 1.Tunnel magneto resistance transducer 9 can be also biaxial Magnetic Sensor, and now the shape of permanent magnet 10 can be disc or annular, and tunnel magneto resistance transducer 9 is positioned at permanent magnet 10 around, preferably coaxially places with permanent magnet 10.The internal magnetization direction of permanent magnet 10 is as shown in the N utmost point and the S utmost point in Fig. 3, and as can be seen from the figure this direction of magnetization is vertical with Z-direction 100.
It should be noted that, above-mentioned guide post 3 is an optimal way, for the slide-and-guide of slide block 2 is provided.
In the time that permanent magnet 10 rotates along direction of rotation 101 along with driving screw 1, tunnel magneto resistance transducer 9 by detected X-axis and Y-axis magnetic-field component with the change curve of the anglec of rotation respectively as shown in the curve 41 and 42 in Fig. 4.The magnetic field amplitude that tunnel magneto resistance transducer 9 produces permanent magnet 10 is converted into analog voltage signal, and the analog voltage signal obtaining can directly be exported, and also can after converting digital signal to by analog-to-digital conversion circuit (ADC), export.Just the anglec of rotation that can learn permanent magnet 10 according to the signal of output is also the anglec of rotation of driving screw 1.
Between slide block 2 and driving screw 1, be equipped with ball 6, pin 7 and spring leaf 8, as shown in Figure 5.Ball 6 rolls along the helicla flute on driving screw 1, its role is to change sliding friction into rolling friction, reduces to greatest extent frictional force, thereby increases the service life.Pin 7 is for withstanding ball 6, it can be along being parallel to the plane of described dwang and described guide post composition and sliding perpendicular to the axial direction of described dwang, can slide along X-direction, utilize spring leaf 8 and pin 7 eliminate because of foozle and assemble the gap causing, ensure the accuracy of positive revesal.Above-mentioned X-direction is to be parallel to the plane of dwang and guide post composition and the axial direction perpendicular to dwang.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (15)
1. a contactless line potentiometer, is characterized in that, described contactless line potentiometer comprises slide block, dwang, tunnel magneto resistance transducer, permanent magnet and pedestal; Described slide block has the first through hole;
Described dwang is through described the first through hole, rotating being arranged on described pedestal in two ends of described dwang;
Described slide block slides along the axial direction of described dwang, and the slip of described slide block drives described dwang to rotate;
Described permanent magnet is positioned at one end of described dwang, follows described dwang and rotates together;
Described tunnel magneto resistance transducer is adjacent with described permanent magnet, rotates the magnetic field producing and the magnetic field detecting is converted into voltage signal output for detection of described permanent magnet.
2. contactless line potentiometer according to claim 1, is characterized in that, described contactless line potentiometer also comprises a guide post, and described slide block also has the second through hole; Described guide post, through described the second through hole, is parallel to described dwang, and its two ends are fixed on described pedestal.
3. contactless line potentiometer according to claim 1, is characterized in that, described tunnel magneto resistance transducer is twin shaft rotary magnetic transducer or two orthogonal single-shaft-rotation Magnetic Sensors.
4. contactless line potentiometer according to claim 3, is characterized in that, described permanent magnet be shaped as disc, annular or square.
5. contactless line potentiometer according to claim 1, is characterized in that, described tunnel magneto resistance transducer is the linear Magnetic Sensor of twin shaft.
6. contactless line potentiometer according to claim 5, is characterized in that, described permanent magnet be shaped as disc or annular.
7. contactless line potentiometer according to claim 1, is characterized in that, the central shaft of described tunnel magneto resistance transducer is identical with the central shaft of described permanent magnet, described dwang.
8. contactless line potentiometer according to claim 1, is characterized in that, the internal magnetization direction of described permanent magnet is vertical with the axial direction of described dwang.
9. contactless line potentiometer according to claim 2, is characterized in that, described contactless line potentiometer also includes ball, and it is between described slide block and described dwang.
10. contactless line potentiometer according to claim 9, it is characterized in that, between described slide block and described dwang, be equipped with the pin for withstanding described ball, described pin can be along being parallel to the plane of described dwang and described guide post composition and sliding perpendicular to the axial direction of described dwang.
11. contactless line potentiometers according to claim 10, is characterized in that, between described slide block and described pin, are equipped with spring leaf.
12. contactless line potentiometers according to claim 9, is characterized in that, on described dwang, comprise helicla flute, described ball rolls along described helicla flute.
13. contactless line potentiometers according to claim 1, it is characterized in that, the bottom of described contactless line potentiometer is provided with printed circuit board (PCB), also includes wiring pin on it, and described tunnel magneto resistance transducer is welded on described printed circuit board (PCB).
14. contactless line potentiometers according to claim 1, is characterized in that, described dwang is driving screw or torsion bar.
15. contactless line potentiometers according to claim 14, is characterized in that, utilize screw plate to rub the helix on described driving screw, adopt electroplating technology or Technology for Heating Processing to obtain the case hardness needing on described driving screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320838046.1U CN203659562U (en) | 2013-12-18 | 2013-12-18 | Non-contact type line-marking potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320838046.1U CN203659562U (en) | 2013-12-18 | 2013-12-18 | Non-contact type line-marking potentiometer |
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| Publication Number | Publication Date |
|---|---|
| CN203659562U true CN203659562U (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320838046.1U Expired - Lifetime CN203659562U (en) | 2013-12-18 | 2013-12-18 | Non-contact type line-marking potentiometer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646736A (en) * | 2013-12-18 | 2014-03-19 | 江苏多维科技有限公司 | Noncontact-type scribing potentiometer |
| CN114088120A (en) * | 2022-01-21 | 2022-02-25 | 成都宏明电子股份有限公司 | Composite displacement sensor with bidirectional linear displacement and angular displacement detection functions |
| US11533988B2 (en) | 2019-10-28 | 2022-12-27 | Ergotron, Inc. | Systems and methods for lift force estimation |
-
2013
- 2013-12-18 CN CN201320838046.1U patent/CN203659562U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103646736A (en) * | 2013-12-18 | 2014-03-19 | 江苏多维科技有限公司 | Noncontact-type scribing potentiometer |
| WO2015090198A1 (en) * | 2013-12-18 | 2015-06-25 | 江苏多维科技有限公司 | Non-contact marked potentiometer |
| CN103646736B (en) * | 2013-12-18 | 2017-01-18 | 江苏多维科技有限公司 | Noncontact-type scribing potentiometer |
| US9978485B2 (en) | 2013-12-18 | 2018-05-22 | MultiDimension Technology Co., Ltd. | Non-contact linear potentiometer |
| US11533988B2 (en) | 2019-10-28 | 2022-12-27 | Ergotron, Inc. | Systems and methods for lift force estimation |
| CN114088120A (en) * | 2022-01-21 | 2022-02-25 | 成都宏明电子股份有限公司 | Composite displacement sensor with bidirectional linear displacement and angular displacement detection functions |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |