CN104637639A - High-precision helical potential device - Google Patents
High-precision helical potential device Download PDFInfo
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- CN104637639A CN104637639A CN201510065363.8A CN201510065363A CN104637639A CN 104637639 A CN104637639 A CN 104637639A CN 201510065363 A CN201510065363 A CN 201510065363A CN 104637639 A CN104637639 A CN 104637639A
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- resistive
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- screw thread
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/24—Adjustable resistors the contact moving along turns of a helical resistive element, or vica versa
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- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
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Abstract
The invention discloses a high-precision helical potential device. The high-precision helical potential device comprises a resistor body, a resistor ligand and a resistor pointer, wherein the resistor body and the resistor ligand are provided with a first thread and a second thread, respectively, and the resistor ligand drives the resistor pointer to move along the first thread on the surface of the resistor body, so that an output resistance value of the high-precision helical potential device can be changed. Compared with the prior art that a resistor pointer moves along the linear direction of a resistor body, the high-precision helical potential device provided by the embodiment of the invention has the advantages that the precision of the output resistance value of the high-precision helical potential device can be improved, and the requirement on the precision of a variable resistor in the fields of precision control and precision measurement can be met.
Description
Technical field
The present invention relates to electronic measuring technology field, particularly relate to a kind of high-precision spiral Potentiometric devices.
Background technology
In prior art, variable resistance application widely, such as, can change the characteristic of signal generator, make lights dim, actuating motor or control its rotating speed etc., and it generally includes resistive element, movable contact flat and three pins.Wherein two fixing pin connecting resistance body two ends, another pin (centre cap) is taken over a job movable contact spring, movable contact flat along resistive element rectilinear motion, to change the resistance at resistive element two ends.In precise hard_drawn tuhes and field of precision measurement, existing variable resistance is difficult to the demand meeting its precision.
Be necessary to provide a kind of high-precision spiral Potentiometric devices based on this, to meet in precise hard_drawn tuhes and field of precision measurement the requirement of variable resistance precision.
Summary of the invention
Main purpose of the present invention is to provide a kind of high-precision spiral Potentiometric devices, to meet in precise hard_drawn tuhes and field of precision measurement the requirement of variable resistance precision.
For achieving the above object, the invention provides a kind of high-precision spiral Potentiometric devices, described high-precision spiral Potentiometric devices comprises resistor main body, resistance ligand and resistive:
Described resistor main body surface is provided with the first screw thread; Described resistance ligand is provided with the second screw thread with described first screw-threaded engagement; The first end of described resistive and described resistor main body surface contact, the second end of described resistive is fixed on described resistance ligand; Described resistance ligand drives described resistive to move along described first screw thread on described resistor main body surface, to change the output resistance of described high-precision spiral Potentiometric devices.
Wherein in an embodiment, the first end surface attachment of described resistive has gilding.
Wherein in an embodiment, the first end of described resistive contacts with at the bottom of the tooth of described first screw thread.
Wherein in an embodiment, the first end of described resistive contacts with the crest of described first screw thread.
Wherein in an embodiment, the part that described resistor main body surface contacts with the first end of described resistive is provided with palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance close one in layer or silver-based resistive alloy-layer.
Wherein in an embodiment, the part that described resistor main body surface contacts with the first end of described resistive is disposed with organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.
Wherein in an embodiment, the part that described resistor main body surface contacts with the first end of described resistive is disposed with nano metal layer, organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.
Wherein in an embodiment, the pitch of described first screw thread and described second screw thread is all set to 0.1mm ~ 5mm.
Wherein in an embodiment, the diameter of described resistor main body is 5mm ~ 100mm.
Wherein in an embodiment, the resistivity on described resistor main body surface is 1.0 × 10
-6Ω ~ 1.0 × 10
-3Ω, temperature coefficient is ± 1ppm ~ ± 100ppm.
The present invention adopts technique scheme, the technique effect brought is: the high-precision spiral Potentiometric devices that the embodiment of the present invention provides comprises resistor main body, resistance ligand and resistive, by arranging the first screw thread and the second screw thread respectively in resistor main body and resistance ligand, resistance ligand is made to drive resistive to move along described first screw thread on resistor main body surface, thus change the output resistance of high-precision spiral Potentiometric devices, contrast resistive of the prior art to move along resistor main body rectilinear direction, the high-precision spiral Potentiometric devices that the embodiment of the present invention provides improves the precision of the output resistance of high-precision spiral Potentiometric devices, can meet in precise hard_drawn tuhes and field of precision measurement the requirement of variable resistance precision.
Accompanying drawing explanation
Fig. 1 is high-precision spiral Potentiometric devices preferred embodiment structural representation of the present invention;
Fig. 2 is high-precision spiral Potentiometric devices first screw thread of the present invention and the second screw-threaded engagement first example structure schematic diagram;
Fig. 3 is high-precision spiral Potentiometric devices first screw thread of the present invention and the second screw-threaded engagement second example structure schematic diagram;
Fig. 4 is the structural representation of high-precision spiral Potentiometric devices preferred embodiment band output of the present invention mark.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Main purpose of the present invention is to provide a kind of high-precision spiral Potentiometric devices, to meet in precise hard_drawn tuhes and field of precision measurement the requirement of variable resistance precision.
For achieving the above object, the invention provides a kind of high-precision spiral Potentiometric devices.
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 1 is high-precision spiral Potentiometric devices first preferred embodiment structural representation of the present invention; Fig. 2 is high-precision spiral Potentiometric devices first screw thread of the present invention and the second screw-threaded engagement first example structure schematic diagram; Fig. 3 is high-precision spiral Potentiometric devices first screw thread of the present invention and the second screw-threaded engagement second example structure schematic diagram.
In one embodiment, as shown in Figure 1, Figure 2, Figure 3 shows, described high-precision spiral Potentiometric devices comprises resistor main body 10, resistance ligand 20 and resistive 30 (not shown in Fig. 1, with reference to shown in Fig. 2 and Fig. 3):
Described resistor main body 10 surface is provided with the first screw thread 101; Described resistance ligand 20 is provided with the second screw thread 201 engaged with described first screw thread 101; First end 301 and described resistor main body 10 surface contact of described resistive 30, the second end 302 of described resistive 30 is fixed on described resistance ligand 20; Described resistance ligand 20 drives described resistive 30 to move along described first screw thread 101 on described resistor main body 10 surface, to change the output resistance of described high-precision spiral Potentiometric devices.
Particularly, described resistor main body 10 and described resistance ligand 20 can be set to the structure of screw rod and screw thread, resistor main body 10 is set to the structure of similar screw rod, resistor main body 10 surface is provided with the first screw thread 101, resistance ligand 20 is set to the structure of similar nut, resistance ligand 20 is provided with the second screw thread 201 engaged with the first screw thread 101, first end 301 and resistor main body 10 surface contact of resistive 30, the second end 302 of resistive 30 is fixed on resistance ligand 20.During described high-precision spiral Potentiometric devices work, described resistor main body 10 can be driven to rotate by external force, resistor main body 10 drives described resistance ligand 20 to drive described resistive 30 to move along described first screw thread 101 on described resistor main body 10 surface, to change the output resistance of described high-precision spiral Potentiometric devices.During described high-precision spiral Potentiometric devices work, can also be rotated by resistance ligand 20 described in external force Direct driver, described resistive 30 is driven to move along described first screw thread 101 on described resistor main body 10 surface, to change the output resistance of described high-precision spiral Potentiometric devices.
The high-precision spiral Potentiometric devices that the embodiment of the present invention provides by arranging the first screw thread 101 and the second screw thread 201 respectively in resistor main body 10 and resistance ligand 20, resistance ligand 20 is made to drive resistive 30 to move along described first screw thread 101 on resistor main body 10 surface, thus change the output resistance of high-precision spiral Potentiometric devices, contrast resistive of the prior art to move along resistor main body rectilinear direction, the high-precision spiral Potentiometric devices that the embodiment of the present invention provides improves the precision of the output resistance of high-precision spiral Potentiometric devices, can meet in precise hard_drawn tuhes and field of precision measurement the requirement of variable resistance precision.
Wherein in a preferred embodiment, first end 301 surface attachment of described resistive 30 has gilding.Gold-plated being actually is covered with one deck gold again by special process on metal-contacting surface, certainly in some low-end applications occasions, brass plating also can be adopted gold-plated to replace.Due to the non-oxidizability of gold and conductibility very strong, therefore, adopt craft of gilding that the first end 301 of resistive 30 can be prevented to be oxidized owing to using for a long time with described resistor main body 10 surface, and reduce contact resistance, improve the precision of the output resistance of high-precision spiral Potentiometric devices further.
Wherein in a preferred embodiment, as shown in Figure 2, the first end 301 of described resistive 30 contacts with at the bottom of the tooth of described first screw thread 101.When contacting at the bottom of the first end 301 of described resistive 30 and the tooth of described first screw thread 101, be fluted body at the bottom of tooth due to described first screw thread 101, therefore, the first end 301 of described resistive 30 can be accurately guided to move at the bottom of the tooth of described first screw thread 101, play guide effect, reduce the error adopted in high-precision spiral Potentiometric devices measuring process.
Wherein in a preferred embodiment, as shown in Figure 3, the first end 301 of described resistive 30 contacts with the crest of described first screw thread 101.When the first end 301 of described resistive 30 contacts with the crest of described first screw thread 101, can arrange a buckle (not shown in Fig. 3) between the first end 301 of described resistive 30 and the second end 302 of described resistive 30, described buckle just in time with at the bottom of the tooth of described first screw thread 101 engages.Be fluted body at the bottom of tooth due to described first screw thread 101, therefore, the first end 301 of described resistive 30 accurately can be guided to move along the crest of described first screw thread 101 by described buckle, play guide effect, reduce the error adopted in high-precision spiral Potentiometric devices measuring process.
In order to improve precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices further, wherein in an embodiment, the part that described resistor main body 10 surface contacts with the first end of described resistive 30 is provided with palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance close one in layer or silver-based resistive alloy-layer.Described resistor main body 10 surface can be the crest 1012 of described first screw thread 101, also can be at the bottom of the tooth of described first screw thread 101 1011.Palladium base electric resistance alloy, such as palladium-silver, palladium-silver copper, palladium molybdenum etc., be characterized in that resistivity is high, temperature coefficient of resistance is lower, and contact resistance is low and stable, good welding performance.Certainly, the part that described resistor main body 10 surface contacts with the first end of described resistive 30 can also be provided with platinum base electric resistance alloy layer, such as platinum rhodium, platinoiridita, platinoid etc.Auri resistance can also be provided with and close layer, such as gold, silver and bronze, golden ambrose alloy, golden nickel chromium triangle, golden palladium iron aluminium etc.Silver-based resistive alloy-layer can also be provided with, such as silver-colored manganese tin.The contact resistance of above electric resistance alloy is little, chemical stability and resistance to wear good, precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices can be improved.
In order to improve precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices further, wherein in an embodiment, the part that described resistor main body 10 surface contacts with the first end 301 of described resistive 30 is disposed with organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.Organic insulating material comprises insulating varnish, insulating cement, insulating paper, non-conductive fibre goods, rubber etc.Organic insulating material effectively can isolate the conductivity between described palladium base electric resistance alloy layer and described resistor main body 10 body interior metallic object, reduce the impact of other metallic objects on the output resistance of described high-precision spiral Potentiometric devices, improve the precision measured.Simultaneously, outermost layer is provided with the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer, silver-based resistive alloy-layer, its contact resistance is little, chemical stability and resistance to wear good, precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices can be improved.
In order to improve precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices further, wherein in an embodiment, the part that described resistor main body 10 surface contacts with the first end 301 of described resistive 30 is disposed with nano metal layer, organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.Close and the electric conductivity of nano metal material matter well can improve the precision of the output resistance of described high-precision spiral Potentiometric devices.Organic insulating material effectively can isolate the conductivity between described electric resistance alloy layer and described resistor main body 10 body interior metallic object, reduces the impact of other metallic objects on the output resistance of described high-precision spiral Potentiometric devices, improves the precision measured.Simultaneously, outermost layer is provided with the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer, silver-based resistive alloy-layer, its contact resistance is little, chemical stability and resistance to wear good, precision and the life-span of the output resistance of described high-precision spiral Potentiometric devices can be improved.
Wherein in an embodiment, the pitch of described first screw thread 101 and described second screw thread 201 is all set to 0.1mm ~ 5mm.Pitch is less, and the certainty of measurement of described high-precision spiral Potentiometric devices is higher.But pitch is less, the manufacturing process of described high-precision spiral Potentiometric devices is more complicated, and therefore, the pitch of described first screw thread 101 and described second screw thread 201 is preferably all set to 0.15mm by the embodiment of the present invention.
Wherein in an embodiment, the diameter of described resistor main body is 5mm ~ 100mm.The diameter of described resistor main body is larger, and the certainty of measurement of described high-precision spiral Potentiometric devices is higher.But the diameter of described resistor main body is larger, its space occupied is larger, does not meet precise hard_drawn tuhes and field of precision measurement to the requirement of its volume.Therefore, the diameter of described resistor main body is preferably set to 25mm by the embodiment of the present invention.
Wherein in an embodiment, the resistivity on described resistor main body surface is 1.0 × 10
-6Ω ~ 1.0 × 10
-3Ω, temperature coefficient is ± 1ppm ~ ± 100ppm.Experiment proves, the resistivity on described resistor main body surface is higher, and the resistance of unit distance is larger, the signal obtained is larger, the certainty of measurement of described high-precision spiral Potentiometric devices is higher, and therefore, the resistivity on described resistor main body surface is set to 1.0 × 10-5 Ω by the embodiment of the present invention.The temperature coefficient on described resistor main body surface is less, show that the impact of ambient temperature on measurement result is less, can measure error be reduced, improve the certainty of measurement of described high-precision spiral Potentiometric devices, therefore, the temperature coefficient on described resistor main body surface is set to ± 5ppm by the embodiment of the present invention.
With reference to the structural representation that Fig. 4, Fig. 4 are high-precision spiral Potentiometric devices preferred embodiment band output of the present invention mark.
High-precision spiral Potentiometric devices preferred embodiment provided by the invention is when practical application, the connected mode of described high-precision spiral Potentiometric devices output in measurement or control circuit has AC, BC, AB, when exporting termination AC or BC, resistance ligand 20 drives described resistive to move along described first screw thread on described resistor main body 10 surface, to change the output resistance of described high-precision spiral Potentiometric devices, when exporting termination AB end, the output resistance of described high-precision spiral Potentiometric devices is definite value.When wire of output terminal meets AC, resistance decreasing when resistive moves left, ER effect is large; When resistive moves right, resistance becomes large, and electric current diminishes.When wire of output terminal meets BC, when resistive is moved to the left, resistance becomes large, and electric current diminishes; When resistive moves right, resistance decreasing, ER effect is large.When wire of output terminal meets AB, resistance is at this moment maximum, and the electric current passed through is also very little.The resistance of resistance also cannot be changed by mobile resistive simultaneously, is also equivalent to a fixed value resistance.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a high-precision spiral Potentiometric devices, is characterized in that, described high-precision spiral Potentiometric devices comprises resistor main body, resistance ligand and resistive:
Described resistor main body surface is provided with the first screw thread; Described resistance ligand is provided with the second screw thread with described first screw-threaded engagement; The first end of described resistive and described resistor main body surface contact, the second end of described resistive is fixed on described resistance ligand; Described resistance ligand drives described resistive to move along described first screw thread on described resistor main body surface, to change the output resistance of described high-precision spiral Potentiometric devices.
2. high-precision spiral Potentiometric devices as claimed in claim 1, it is characterized in that, the first end surface attachment of described resistive has gilding.
3. high-precision spiral Potentiometric devices as claimed in claim 1, it is characterized in that, the first end of described resistive contacts with at the bottom of the tooth of described first screw thread.
4. high-precision spiral Potentiometric devices as claimed in claim 1, it is characterized in that, the first end of described resistive contacts with the crest of described first screw thread.
5. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, it is characterized in that, the part that described resistor main body surface contacts with the first end of described resistive is provided with palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance close one in layer or silver-based resistive alloy-layer.
6. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, it is characterized in that, the part that described resistor main body surface contacts with the first end of described resistive is disposed with organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.
7. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, it is characterized in that, the part that described resistor main body surface contacts with the first end of described resistive is disposed with nano metal layer, organic insulator from the inside to the outside, and the one in palladium base electric resistance alloy layer, platinum base electric resistance alloy layer, auri resistance conjunction layer or silver-based resistive alloy-layer.
8. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, is characterized in that, the pitch of described first screw thread and described second screw thread is all set to 0.1mm ~ 5mm.
9. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, is characterized in that, the diameter of described resistor main body is 5mm ~ 100mm.
10. the high-precision spiral Potentiometric devices as described in any one of Claims 1 to 4, is characterized in that, the resistivity on described resistor main body surface is 1.0 × 10
-6Ω ~ 1.0 × 10
-3Ω, temperature coefficient is ± 1ppm ~ ± 100ppm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065363.8A CN104637639A (en) | 2015-02-06 | 2015-02-06 | High-precision helical potential device |
| PCT/CN2015/073827 WO2016123834A1 (en) | 2015-02-06 | 2015-03-07 | High precision wound electric potential device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510065363.8A CN104637639A (en) | 2015-02-06 | 2015-02-06 | High-precision helical potential device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104637639A true CN104637639A (en) | 2015-05-20 |
Family
ID=53216284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510065363.8A Pending CN104637639A (en) | 2015-02-06 | 2015-02-06 | High-precision helical potential device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104637639A (en) |
| WO (1) | WO2016123834A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540554A (en) * | 2020-06-09 | 2020-08-14 | 潘宗岭 | Precise stepless adjustable resistor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2774853A (en) * | 1954-04-19 | 1956-12-18 | Bendix Aviat Corp | Variable resistance instrument |
| CN86209800U (en) * | 1986-12-08 | 1987-09-16 | 董如江 | Potentiometer with multiple resistance value changeable terminals |
| CN2047439U (en) * | 1988-07-26 | 1989-11-08 | 蒋小钢 | Wire-wound stageless rheostat |
| CN203910385U (en) * | 2014-06-09 | 2014-10-29 | 常州市零伍壹玖电子有限公司 | Multifunctional reading slide rheostat |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6639507B1 (en) * | 2002-04-29 | 2003-10-28 | Vladimir Tubaltsev | Plated precision potentiometer |
| CN203415339U (en) * | 2013-07-08 | 2014-01-29 | 昆山福烨电子有限公司 | Wide amplitude potentiometer |
-
2015
- 2015-02-06 CN CN201510065363.8A patent/CN104637639A/en active Pending
- 2015-03-07 WO PCT/CN2015/073827 patent/WO2016123834A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2774853A (en) * | 1954-04-19 | 1956-12-18 | Bendix Aviat Corp | Variable resistance instrument |
| CN86209800U (en) * | 1986-12-08 | 1987-09-16 | 董如江 | Potentiometer with multiple resistance value changeable terminals |
| CN2047439U (en) * | 1988-07-26 | 1989-11-08 | 蒋小钢 | Wire-wound stageless rheostat |
| CN203910385U (en) * | 2014-06-09 | 2014-10-29 | 常州市零伍壹玖电子有限公司 | Multifunctional reading slide rheostat |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540554A (en) * | 2020-06-09 | 2020-08-14 | 潘宗岭 | Precise stepless adjustable resistor |
| CN111540554B (en) * | 2020-06-09 | 2020-12-18 | 潘宗岭 | Precise stepless adjustable resistor |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016123834A1 (en) | 2016-08-11 |
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