CN101839726B - Rotary sensor - Google Patents
Rotary sensor Download PDFInfo
- Publication number
- CN101839726B CN101839726B CN201010143400XA CN201010143400A CN101839726B CN 101839726 B CN101839726 B CN 101839726B CN 201010143400X A CN201010143400X A CN 201010143400XA CN 201010143400 A CN201010143400 A CN 201010143400A CN 101839726 B CN101839726 B CN 101839726B
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- China
- Prior art keywords
- resistive film
- film
- rotation sensor
- sliding part
- rotor
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Adjustable Resistors (AREA)
Abstract
The present invention provides a rotary sensor which can obtain partial flattened characteristic in output characteristic and can reduce the deviation of output characteristic. The rotary sensor can change the resistance between an end of a first resistive film (35) and a collector (32) through the rotation of a sliding part fixed on a rotor (shaft) and the rotor on an approximately arc-shaped first resistive film (35) and the collector (32), wherein the approximately arc-shaped first resistive film (35) and the collector (32) are provided on a substrate (30). A conductive film (39) is configured to overlap with at least one side end of the first resistive film (35) thereby forming a double-layer structure. A strip-shaped second resistive film (36) which is electrically connected with a terminal (46) extends from the side end of the first resistive film (35) at least. The second resistive film (36) is electrically connected with the conductive film (39) except for the corner parts (39a, 39b).
Description
[technical field]
The present invention relates to a kind of rotation sensor, particularly change the rotation sensor of the anglec of rotation that detects axle etc. through detection resistance value.
[background technology]
In the past, known rotation sensor was: the sliding part through being fixed on the rotor rotates on the roughly circular-arc variable resistor film that is arranged on the substrate with this rotor, can change end of variable resistor film and the resistance value between the sliding part.
As this rotation sensor, in patent documentation 1, put down in writing it and had output voltage sharply converts 0 or 1 zone into than the two ends from its Variable Area that slowly changes function., require this rotation sensor to have local flat characteristic sometimes, and do not have the sensor that can satisfy this requirement at present.
Patent documentation 1: real opening put down the 5-31206 communique
[summary of the invention]
Therefore, the object of the present invention is to provide a kind of output characteristics to have local flat characteristic and can reduce the rotation sensor of the deviation of output characteristics.
To achieve these goals; In rotation sensor as a kind of form of the present invention; Through be fixed on sliding part on the rotor with this rotor on the 1st roughly circular-arc resistive film that is arranged on the substrate and be arranged on the collector body on the substrate and rotate; Can change the end of the 1st resistive film and the resistance value between the collector body, in the said rotation sensor
Arrange conducting film overlappingly forming 2 layers of structure with at least one side end of above-mentioned the 1st resistive film,
Band shape the 2nd resistive film that is electrically connected with terminal, from the above-mentioned at least side end extension of above-mentioned the 1st resistive film,
Above-mentioned the 2nd resistive film is electrically connected with the part except that the portion of corner of above-mentioned conducting film.
In above-mentioned rotation sensor, rotating on the 1st resistive film and on the collector body through sliding part, can change the end of the 1st resistive film and the resistance value between the collector body, and detect the anglec of rotation through detection resistance value.Because at least one side end of the 1st resistive film and conducting film form 2 layers of structure, therefore, in the scope that sliding part slides on conducting film, resistance value can not change, and perhaps, the variation of resistance value is atomic little, thereby can obtain smooth output characteristics.In addition, (so-called " style of calligraphy characterized by hollow strokes " is when promptly being coated with conductive material though the corner portion of conducting film when being coated with conductive material, is easy to produce " breach " or " style of calligraphy characterized by hollow strokes "; Style of calligraphy characterized by hollow strokes state in the similar calligraphy; Be that some zone is failed evenly to be coated with conductive material and the space occurred), still, because the part except that the portion of corner is electrically connected in the 2nd resistive film and the above-mentioned conducting film; Therefore, can eliminate the deviation of the characteristic that causes by above-mentioned " breach " or " style of calligraphy characterized by hollow strokes ".
[beneficial effect]
According to the present invention, can obtain the rotation sensor that output characteristics has local flat characteristic and can reduce the deviation of output characteristics.
[brief description of drawings]
Fig. 1 is a sectional view, and it has shown the rotation sensor as one embodiment of the invention.
Fig. 2 is a planimetric map, and it has shown the sliding part that constitutes above-mentioned rotation sensor.
Fig. 3 is a planimetric map, and it has shown the substrate that constitutes above-mentioned rotation sensor.
Fig. 4 has shown the sectional view of the terminal part of above-mentioned rotation sensor.
Fig. 5 is the chart of the output characteristics of the above-mentioned rotation sensor of demonstration.
[symbol description]
10 ... Axle (rotor)
20 ... Housing
30 ... Substrate
32 ... Collector body
35 ... The 1st resistive film
36 ... The 2nd resistive film
39 ... Conducting film
39a, 39b ... Corner portion
40 ... Sliding part
[embodiment]
Below, the embodiment to rotation sensor of the present invention describes with reference to accompanying drawing.
As shown in Figure 1, roughly constitute as the rotation sensor of an embodiment among the present invention by axle 10, housing 20 and substrate 30.Axle 10 is made up of main shaft part 11 and large-diameter portion 12, and main shaft part 11 is installed in the bearing portion 21 of housing 20 free to rotately, and the axial region 13 that is arranged on large-diameter portion 12 end faces is installed in the recess 31 of substrate 30 free to rotately.In addition, sliding part 40 is fixed on the large-diameter portion 12.
As shown in Figure 2, this sliding part 40 is formed with a plurality of contact portion 42,43, these contact portions from the two ends of the flat-platy base portion 41 of sliding part 40 more carefully bending extend out, and produce contact force; Sliding part 40 is riveted on the large-diameter portion 12 of axle 10 through three holes 44.In addition, the sliding part 40 that uses in the present embodiment all is well-known in the past.
The part of collector body 32 extends to the edge part (bottom of Fig. 3) of substrate 30, and is electrically connected with terminal pins 45 on being fixed on substrate 30.The end of the 2nd resistive film 36,37 is electrically connected with the terminal pins 46,47 that is fixed on the substrate 30 through being formed on substrate 30 lip-deep electrodes 38.In above-mentioned sliding part 40, contact portion 42 is through slip film 33 contact collector bodies 32, and contact portion 43 contacts the 1st resistive film 35.
In addition, as shown in Figure 3 on an end of the 1st resistive film 35, to putting X2 the conducting film 39 that is made from silver is set from an X1.As shown in Figure 4, conducting film 39 is formed on the surface of substrate 30 and overlaps to form the 1st resistive film 35 above that, thereby forms 2 layers of structure in this part.
As previously mentioned, under the state of contact portion 42,43 contact collector bodies 32 and the 1st resistive film 35, sliding part 40 can be followed the rotation of axle 10, turns to an X4 from an X1 with the direction of arrow Y.Between terminal pins 46,47, apply the voltage of setting, from just exporting the voltage corresponding between the terminal pins 45,46 and between the terminal pins 45,47 with the anglec of rotation of sliding part 40.
Output voltage between the terminal pins 45,46 is as shown in Figure 5.That is, when being positioned at the some X1 as initial position in the turned position of sliding part 40, output voltage is V1, exports this voltage V1 during point of arrival X2.Owing between an X1-X2, be provided with conducting film 39, therefore, resistance value can not change or change minimum, thereby can obtain smooth output characteristics.
Because when sliding part 40 rotated between an X2-X3, before point of arrival X3, contact portion 43 moved on the 1st narrow resistive film 35, therefore, output voltage can sharply rise to voltage V2.Afterwards, because when sliding part 40 rotated between an X3-X4, contact portion 43 moved on the 1st thicker resistive film 35, therefore, output voltage slowly rises to voltage V3.
, though conducting film 39 be formed between the X1-X2 with circular shape,, during conductive material, the 39a of corner portion, 39b are easy to produce " breach " or " style of calligraphy characterized by hollow strokes " in coating.Suppose that if make the 2nd resistive film 36 and said bight 39a, 39b is electrically connected,, therefore, in output characteristics, can produce deviation because " breach " or " style of calligraphy characterized by hollow strokes " can form resistance components.But in this embodiment, owing to make the 2nd resistive film 36 and conducting film 39 remove the 39a of corner portion, the part beyond the 39b is electrically connected, and therefore, can get rid of the deviation of the output characteristics that is caused by above-mentioned " breach " or " style of calligraphy characterized by hollow strokes ".
In addition, above-mentioned resistive film 36,37 forms through making squeegee move and carry out serigraphy with resistive paste along a direction (for example, arrow Z direction among Fig. 3).Owing to the 2nd resistive film 36 is that moving direction with respect to squeegee is 45 ° and is provided with, therefore, the amount of being scraped the paste of getting by squeegee is stable, thereby can be printed as the thickness of regulation.Because the 2nd resistive film 36 is thinner, so when thickness was unstable, the deviation of resistance value will be bigger.Therefore, the stable deviation that helps very much to eliminate output characteristics of the thickness of the 2nd resistive film 36.
In addition, rotation sensor of the present invention should not be limited to the foregoing description, can in it invents the scope of thought, make various changes.
Particularly, resistive film 35,36,37 with the structure of shape, axle 10 and the housing 20 of the thin portion of collector body 32 be arbitrarily.As long as conducting film 39 is optimum conductor, just can adopt the material beyond the silver.In addition, resistive film 35,36,37 can adopt multiple material with the material of collector body 32.
[industrial applicibility]
As stated, the invention has the advantages that: it can be used for the rotation sensor that variation through detection resistance value detects the anglec of rotation of axle etc., and particularly, output characteristics has locally flat characteristic, and, can reduce the deviation of output characteristics.
Claims (3)
1. rotation sensor; Be fixed on sliding part on the rotor with this rotor on the 1st roughly circular-arc resistive film that is arranged on the substrate and be arranged on the collector body on the substrate and rotate; Thereby can change the end of the 1st resistive film and the resistance value between the collector body; In the said rotation sensor
Thereby at least one side end of conducting film and said the 1st resistive film is provided with overlappingly and forms 2 layers of structure,
Band shape the 2nd resistive film that is electrically connected with terminal extends from a said at least side end of said the 1st resistive film,
Part in said the 2nd resistive film and the said conducting film except that the bight is electrically connected.
2. rotation sensor according to claim 1 is characterized in that: the said the 1st and the 2nd resistive film is processed by carbon, and said conducting film is made from silver.
3. rotation sensor according to claim 1 and 2 is characterized in that: said rotor is axle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009067190A JP5163565B2 (en) | 2009-03-19 | 2009-03-19 | Rotation sensor |
| JP2009-067190 | 2009-03-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101839726A CN101839726A (en) | 2010-09-22 |
| CN101839726B true CN101839726B (en) | 2012-11-28 |
Family
ID=42743244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010143400XA Expired - Fee Related CN101839726B (en) | 2009-03-19 | 2010-03-04 | Rotary sensor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5163565B2 (en) |
| CN (1) | CN101839726B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567649A (en) * | 2013-10-22 | 2015-04-29 | 北京精密机电控制设备研究所 | Integrated triply-redundant angular displacement sensor |
| CN106706006B (en) * | 2014-12-09 | 2019-02-01 | 嵊州市鑫聚源厨具有限公司 | Incude cilium, sensor, artificial intelligence robot |
| CN108051017A (en) * | 2018-03-20 | 2018-05-18 | 东莞市锁之道科技有限公司 | A kind of rotational position sensor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411005A (en) * | 2001-09-28 | 2003-04-16 | 株式会社村田制作所 | Variable resistor |
| CN1784754A (en) * | 2003-05-08 | 2006-06-07 | 松下电器产业株式会社 | Electronic component and method for manufacturing same |
| CN2823985Y (en) * | 2005-05-09 | 2006-10-04 | 沈毅 | Position or angle tester for electric actuator |
| CN101345106A (en) * | 2007-07-13 | 2009-01-14 | 株式会社村田制作所 | Potentiometer circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61109101U (en) * | 1984-12-24 | 1986-07-10 |
-
2009
- 2009-03-19 JP JP2009067190A patent/JP5163565B2/en not_active Expired - Fee Related
-
2010
- 2010-03-04 CN CN201010143400XA patent/CN101839726B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1411005A (en) * | 2001-09-28 | 2003-04-16 | 株式会社村田制作所 | Variable resistor |
| CN1784754A (en) * | 2003-05-08 | 2006-06-07 | 松下电器产业株式会社 | Electronic component and method for manufacturing same |
| CN2823985Y (en) * | 2005-05-09 | 2006-10-04 | 沈毅 | Position or angle tester for electric actuator |
| CN101345106A (en) * | 2007-07-13 | 2009-01-14 | 株式会社村田制作所 | Potentiometer circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101839726A (en) | 2010-09-22 |
| JP5163565B2 (en) | 2013-03-13 |
| JP2010217125A (en) | 2010-09-30 |
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| C06 | Publication | ||
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20121128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |