CN202757631U - Rotating shaft type potentiometer - Google Patents
Rotating shaft type potentiometer Download PDFInfo
- Publication number
- CN202757631U CN202757631U CN 201220410748 CN201220410748U CN202757631U CN 202757631 U CN202757631 U CN 202757631U CN 201220410748 CN201220410748 CN 201220410748 CN 201220410748 U CN201220410748 U CN 201220410748U CN 202757631 U CN202757631 U CN 202757631U
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- Prior art keywords
- rotating shaft
- magnet
- diskware
- fore shell
- rotary shaft
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Abstract
The utility model discloses a rotating shaft type potentiometer, which comprises a rotating shaft and a front shell, wherein the rotating shaft is installed on the front shell; a magnet that can interlock with the rotating shaft is arranged at the rear end of the rotating shaft; a chip board that corresponds to the magnet and converts magnetic flux to voltage signals is arranged on the rear side of the rotating shaft; a disc component is arranged at the rear part of the rotating shaft; the disc component can limit the forward movement of the rotating shaft on the front shell; in addition, an obstructing component is arranged between the magnet and the chip board; and magnetic lines of the magnet can penetrate through the obstructing component. Through the adoption of a non-contact structure, the service life is prolonged greatly; and the disc component is adopted to limit the rotating shaft to move forward, and the obstructing component is adopted to limit the rotating shaft to move backward, so that the reliability of the rotating shaft is improved, and the stability of measured data is improved.
Description
Technical field
The utility model relates to sensor technology, especially relates to a kind of rotary shaft potentiometer.
Background technology
Potentiometer is to have the resistive element that exit, resistance can be regulated by certain Changing Pattern.It usually by resistive element and movably brush or sliding system form, when brush moves along resistive element, namely obtain to become with displacement resistance value or the voltage of certain relation at output terminal.Namely when adding a voltage between two of resistive element fixing the electric shocks, by rotating or sliding system changes the position of contact on resistive element, between moving contact and fixed contact, just can obtain one and become the voltage that necessarily concerns with the moving contact position.The potentiometer that uses at present is generally the galvanically potentiometer, is made of resistive film and contact, directly regulates residing position on resistive film, contact, the size of adjustable resistance, thereby the height of adjustment current potential.Because frequent the contact and direct friction between contact and the resistive film caused wearing and tearing and the scratch of resistive film, makes the potentiometer life-span not long.Mainly be to come protective resistance film or the contact by between resistive film and contact, increasing the conductive protection device to the improvement of potentiometer at present; thereby reach the purpose that prolongs the potentiometer life-span, do not cause not long problem of life-span but fundamentally solve potentiometer because of frictionally damage.
China Patent No. is 98212193.8, the utility model patent that name is called " inductance type liquid level sensor " discloses a kind of electromagnetic sensor of slope shape iron core, be characterized in the variation by iron core relative conductivity in coil, realize the detection of change in displacement, mention in its instructions: no matter core configuration is circular cone, round platform, pyramid, terrace with edges etc. all can, and linearity can be proofreaied and correct by revising iron core, but no matter which kind of iron core is proposed in the instructions, all has the rigidity knot stronger, the characteristics that cost is higher, to revise iron core, it can only be the gradient of polishing iron core integral body, say such as instructions, the gradient of iron core integral body is consistent, and its linear effects is subject to the limitation of the iron core gradient, implement difficulty very large, so almost do not see the figure of this technical scheme in the present electromagnetic sensor.
China Patent No. is 02217324.2, the utility model patent that name is called " non-contact point potentiometer " discloses a kind of non-contact point potentiometer, it is to be made of sensor-based system and circuit analysis converting system, its sensor-based system is comprised of inductive coil and inductor, inductive coil is a solenoid coil, inductor is a magnetic conductor, and inductor is near inductive coil, and the relative position between inductor and the inductive coil can be handled movement.This utility model patent reaches the purpose of adjusting current potential by adjusting inductor and inductive coil relative position, and it is a kind of potentiometer without wearing and tearing, be fit to need frequent speed governing the industries such as motor, electric sewer.But this utility model has following deficiency: the firstth, although solved the wear problem of potentiometer, and the sensor that adopts the variable inductance principle to make has been applied in increasing field, its major function is to transfer various physical characteristicss to electrology characteristic, thereby realize the automatic detection of various parameters, but this patented technology is difficult to realize the fine adjustment of current potential height, let alone uses this potentiometer to carry out the detection of various parameters; The secondth, linear being difficult for regulated, and variable inductance formula sensor adopts solid core usually, and be very high to the uniformity requirement of the homogeneity of iron core processing, coil winding.
Can find out from above-mentioned introduction, in robot control system(RCS), especially in electric operator, traditional potentiometer is when work, and the contact directly contacts with resistive element, constantly sliding friction, and resistive element will soon wear and tear, so that precise decreasing, the lost of life.And non-contact potentiometer is because not friction, and stability and life-span are all fine, and non-contact potentiometer has photo-electric, Hall-type, electromagnetic type, reluctance type, the aspects such as their precision, the linearity, repeatability are all different, and price also has very big difference, and are also rare to using widely.
China Patent No. is 200820096190.1, the utility model patent that name is called " Hall potentiometer that is used for topworks " discloses a kind of Hall potentiometer for topworks, comprise the rotating shaft of passing shell, magnet steel with the rotating shaft interlock, the Hall element that magnetic flux be converted to voltage signal corresponding with magnet steel, the signal processing circuit of execution arc tangent (ATAN) computing of connection Hall element.This signal processing circuit is the analog to digital converter that is linked in sequence (A/D), digital signal processor (DSP), digital to analog converter (D/A) or digital output circuit.Hall element is Hall array, and the Hall chip that becomes one with described signal processing circuit.The middle part that shell is stretched out in rotating shaft is fixed with the gear that links with topworks.Shell comprises the hollow copper double-screw bolt that is slidingly matched with rotating shaft, and the loam cake that is fixedly connected with copper stud can snap in the base of loam cake bottom.Hall chip weldering knot snaps in the base on installation circuit board in the enclosure, is positioned between loam cake and the base.Although this utility model has the characteristics such as volume is little, cost is low, also has following deficiency: the one, complex structure, part is many; The 2nd, poor reliability; The 3rd, measuring accuracy is low, and error is large.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of novelty simple in structure, the rotary shaft potentiometer that measuring accuracy is high.
The technical solution of the utility model is as follows: a kind of rotary shaft potentiometer, comprise rotating shaft and fore shell, described rotating shaft is installed on the described fore shell, being equipped with in described rotating shaft rear end can be with the magnet of this rotating shaft interlock, described rotating shaft rear side is provided with the chip board that magnetic flux be converted to voltage signal corresponding with described magnet, its main points are: described rotating shaft rear portion is provided with diskware, this diskware can limit described rotating shaft and move forward at described fore shell, be provided with block piece between described magnet and chip board, the magnetic line of force of described magnet can pass described block piece.Adopt above structure, rotating shaft rotation so that the magnet in the rotating shaft rotates simultaneously, thereby so that magnetic field change, the magnetic flux that the discontiguous chip board corresponding with magnet sensed also can produce corresponding variation, chip board is converted to voltage signal with the magnetic flux that detects, and by computing, draws the corresponding angular position information that magnet rotates, so obtain the angle information of the rotation of rotating shaft, measuring accuracy is accurate, adopts contactless structure, and greatly increase serviceable life.In the above structure, adopt diskware restriction rotating shaft to move forward, adopt block piece restriction rotating shaft mobile backward, increased the reliability of rotating shaft, improved the stability of measurement data.
Described fore shell comprises housing and guide pin bushing, and described guide pin bushing is connected to described housing front end and connects this housing, is provided with the guide rail ring at described housing and guide pin bushing junction, is enclosed within the described rotating shaft in the described guide pin bushing, and described diskware front end face is against on the described guide rail ring.Adopt above structure, guide pin bushing and guide rail ring are set, rotating shaft stability is increased, the situation such as can not shake has increased the reliability of measuring.
Be provided with stop part in described housing, be provided with limiting section at described diskware sidewall, when described limiting section rotated with described diskware, described stop part contacted with described limiting section, thereby can stop that described diskware is rotated further.Adopt above structure, rotating shaft can be rotated 350 °, and rotational angle increases greatly, when the utility model uses, has increased the distance of measuring.
For rotating shaft can not be shaken when rotating, also can better limit rotating shaft simultaneously and move forward, described diskware front end face is provided with the hoop guide groove, and described guide rail ring is positioned at described hoop guide groove.
Overcoat has friction ring on described guide rail ring, and this friction ring is between described guide rail ring outer wall and hoop guide groove inwall.Adopt above structure, when rotating shaft is rotated, because the existence of friction ring, the feel when having strengthened rotating shaft, the loose rotation when having avoided rotating shaft to rotate.
In order to realize the reliable installation of magnet, simultaneously can guarantee that the magnetic line of force of magnet passes block piece, guarantee measuring accuracy, on described diskware rear end face, have the magnet mounting hole along described rotating shaft core line, described magnet is column construction, and be installed in the described magnet mounting hole, this magnet rear and front end is magnetic pole.
Hoop is evenly distributed with the ball mount pad on described diskware rear end face, in described ball mount pad ball is installed, and described ball is against on the described block piece.Adopt above structure, can either prevent that rotating shaft is mobile backward, the frictional resistance by can reduce rotating shaft and rotate the time, especially since the even distribution of ball can be good at guaranteeing can not shaking when rotating shaft is rotated.
Described block piece is platy structure, and this block piece is installed in the described fore shell, and described chip board is installed in the described fore shell of this block piece rear side, and described front shell cover is equipped with bonnet.
Beneficial effect: employing of the present utility model, has following distinguishing feature: adopt moving forward and backward of simply novel structural limitations rotating shaft, increased simultaneously the stability of rotating shaft when rotating, thereby greatly improved measuring accuracy, significantly dwindled overall volume, reliability is largely increased, and can adapt to abominable environment for use; Have the characteristics such as simple and convenient assembly, cost is low, application prospect is extensive.
Description of drawings
Fig. 1 is structure intention of the present utility model;
Fig. 2 is the A-A cut-open view of Fig. 1;
Fig. 3 is three-dimensional exploded view of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
See also Fig. 1, Fig. 2 and Fig. 3: a kind of rotary shaft potentiometer, comprise rotating shaft 1 and fore shell 2, described rotating shaft 1 is installed on the described fore shell 2, being equipped with in described rotating shaft 1 rear end can be with the magnet 3 of this rotating shaft 1 interlock, described rotating shaft 1 rear side is provided with the chip board 4 that magnetic flux be converted to voltage signal corresponding with described magnet 3, described rotating shaft 1 rear portion is provided with diskware 5, this diskware 5 can limit described rotating shaft 1 and move forward at described fore shell 2, between described magnet 3 and chip board 4, be provided with block piece 6, the magnetic line of force of described magnet 3 can pass described block piece 6, and this block piece 6 adopts the effective material of magnetic conduction to make.
In conjunction with Fig. 1, Fig. 2 and Fig. 3 can find out: described fore shell 2 comprises housing 2a and guide pin bushing 2b, described guide pin bushing 2b is connected to described housing 2a front end and connects this housing 2a, be provided with guide rail ring 2c at described housing 2a and guide pin bushing 2b junction, be enclosed among the described guide pin bushing 2b in the described rotating shaft 1, described diskware 5 front end faces are against on the described guide rail ring 2c, in described housing 2a, be provided with stop part 2a1, be provided with limiting section 5a at described diskware 5 sidewalls, when described limiting section 5a rotates with described diskware 5, described stop part 2a1 contacts with described limiting section 5a, thereby can stop that described diskware 5 is rotated further, described diskware 5 front end faces are provided with hoop guide groove 5b, described guide rail ring 2c is positioned at described hoop guide groove 5b, and overcoat has friction ring 7 on described guide rail ring 2c, and this friction ring 7 is between described guide rail ring 2c outer wall and hoop guide groove 5b inwall.
See also Fig. 2 and Fig. 3: have magnet mounting hole 1a along described rotating shaft 1 axial line on described diskware 5 rear end faces, described magnet 3 is column construction, and is installed among the described magnet mounting hole 1a, and these magnet 3 rear and front ends are magnetic pole.
It can also be seen that in conjunction with Fig. 2 and Fig. 3: hoop is evenly distributed with ball mount pad 5c on described diskware 5 rear end faces, in described ball mount pad 5c ball 8 is installed, and described ball 8 is against on the described block piece 6.
See also Fig. 3: described block piece 6 is platy structure, and this block piece 6 is installed in the described fore shell 2, and at the described chip board 4 of described fore shell 2 interior installations of these block piece 6 rear sides, described fore shell 2 has mounted cover bonnet 9.
The above only is preferred embodiment of the present utility model; not take the utility model as restriction; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (8)
1. rotary shaft potentiometer, comprise rotating shaft (1) and fore shell (2), described rotating shaft (1) is installed on the described fore shell (2), being equipped with in described rotating shaft (1) rear end can be with the magnet (3) of this rotating shaft (1) interlock, described rotating shaft (1) rear side is provided with the chip board (4) that magnetic flux be converted to voltage signal corresponding with described magnet (3), it is characterized in that: described rotating shaft (1) rear portion is provided with diskware (5), this diskware (5) can limit described rotating shaft (1) and move forward at described fore shell (2), be provided with block piece (6) between described magnet (3) and chip board (4), the magnetic line of force of described magnet (3) can pass described block piece (6).
2. rotary shaft potentiometer according to claim 1, it is characterized in that: described fore shell (2) comprises housing (2a) and guide pin bushing (2b), described guide pin bushing (2b) is connected to described housing (2a) front end and connects this housing (2a), be provided with guide rail ring (2c) at described housing (2a) and guide pin bushing (2b) junction, be enclosed within the described rotating shaft (1) in the described guide pin bushing (2b), described diskware (5) front end face is against on the described guide rail ring (2c).
3. rotary shaft potentiometer according to claim 2, it is characterized in that: in described housing (2a), be provided with stop part (2a1), be provided with limiting section (5a) at described diskware (5) sidewall, when described limiting section (5a) rotates with described diskware (5), described stop part (2a1) contacts with described limiting section (5a), thereby can stop that described diskware (5) is rotated further.
4. rotary shaft potentiometer according to claim 2, it is characterized in that: described diskware (5) front end face is provided with hoop guide groove (5b), and described guide rail ring (2c) is positioned at described hoop guide groove (5b).
5. rotary shaft potentiometer according to claim 4, it is characterized in that: at the upper overcoat of described guide rail ring (2c) friction ring (7) is arranged, this friction ring (7) is positioned between described guide rail ring (2c) outer wall and hoop guide groove (5b) inwall.
6. rotary shaft potentiometer according to claim 1, it is characterized in that: on described diskware (5) rear end face, have magnet mounting hole (1a) along described rotating shaft (1) axial line, described magnet (3) is column construction, and be installed in the described magnet mounting hole (1a), this magnet (3) rear and front end is magnetic pole.
7. rotary shaft potentiometer according to claim 1, it is characterized in that: hoop is evenly distributed with ball mount pad (5c) on described diskware (5) rear end face, ball (8) is installed in described ball mount pad (5c), and described ball (8) is against on the described block piece (6).
8. rotary shaft potentiometer according to claim 1, it is characterized in that: described block piece (6) is platy structure, this block piece (6) is installed in the described fore shell (2), described chip board (4) is installed in the described fore shell (2) of this block piece (6) rear side, and described fore shell (2) has mounted cover bonnet (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410748 CN202757631U (en) | 2012-08-17 | 2012-08-17 | Rotating shaft type potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220410748 CN202757631U (en) | 2012-08-17 | 2012-08-17 | Rotating shaft type potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202757631U true CN202757631U (en) | 2013-02-27 |
Family
ID=47736804
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220410748 Expired - Fee Related CN202757631U (en) | 2012-08-17 | 2012-08-17 | Rotating shaft type potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202757631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798404A (en) * | 2012-08-17 | 2012-11-28 | 重庆诺柏恩自动化技术有限公司 | Rotating shaft-type potentiometer |
| CN107086100A (en) * | 2017-05-04 | 2017-08-22 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
-
2012
- 2012-08-17 CN CN 201220410748 patent/CN202757631U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798404A (en) * | 2012-08-17 | 2012-11-28 | 重庆诺柏恩自动化技术有限公司 | Rotating shaft-type potentiometer |
| CN107086100A (en) * | 2017-05-04 | 2017-08-22 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
| CN107086100B (en) * | 2017-05-04 | 2018-12-18 | 湖南科技大学 | Magnetosensitive non-contact point potentiometer |
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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 |
Granted publication date: 20130227 Termination date: 20140817 |
|
| EXPY | Termination of patent right or utility model |