CN85200310U - High-accuracy self-driving potentiometer with a hundred civcles of coil and double rollers - Google Patents
High-accuracy self-driving potentiometer with a hundred civcles of coil and double rollers Download PDFInfo
- Publication number
- CN85200310U CN85200310U CN 85200310 CN85200310U CN85200310U CN 85200310 U CN85200310 U CN 85200310U CN 85200310 CN85200310 CN 85200310 CN 85200310 U CN85200310 U CN 85200310U CN 85200310 U CN85200310 U CN 85200310U
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- CN
- China
- Prior art keywords
- potentiometer
- contact
- resistance wire
- cylinder
- sliding contact
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Abstract
The utility model relates to a high-accuracy self-driving potentiometer with a hundred circles of coils and double rollers, which successfully changes a moving contact of an original precision potentiometer into a sliding contact. The number of turns of a potentiometer is raised by 150 circles from 10 circles. When in work, the sliding contact can automatically slide on a resistance wire of 36 m in high accuracy. The utility model has the characteristic of long-term, stable, accurate, and automatic work. The utility model is matched with a micro-computer, which can control various parameters in high accuracy.
Description
The present invention is a kind of novel electronic device, is again a kind of novel electronic machinery.
Before the present invention, accurate multiturn potentiometer popular on the market exists following shortcoming: one, and the number of turns is insufficient, has only 10 circles at most, thereby has influenced the precision of control instrument and measurement; Its two, resistance has small beating during work.It is the disadvantage that operation principle causes that this resistance is beated.Change in resistance is to roll on resistance wire by a truckle to realize that small the beating of pulley rolling can bring resistance to beat during work.Accurate multiturn potentiometer like this can not use (valuator that for example can not make the precision temperature controller with it) on high-precision control instrument.
In order to overcome the shortcoming of above-mentioned accurate multiturn potentiometer, the present invention adopts two thread drums to replace original single thread drum, makes the number of turns be increased to 100 circle even thousands of circles.Simultaneously rolling contact is made into sliding contact, thereby the small resistance that occurs when having avoided potentiometer work is beated.
In order to achieve the above object, below in conjunction with the description of drawings summary of the invention.Accompanying drawing is a principle schematic.The potentiometer main body of invention is resistance wire (9), two thread drum (1) (6) and sliding contact (3) compositions that work is synchronized with the movement.Resistance wire (9) is wound on two thread drums, promptly encloses around N on first cylinder earlier, encloses around M on second tin roller again, and M+N number of turns sum approximates total number of threads of single thread drum.When cylinder rotated, resistance wire poured on the second tin roller (6) from first cylinder (1), and resistance wire ring number reduces on first cylinder; Otherwise second tin roller (6) is gone up resistance wire ring number and is reduced, and resistance wire ring number increases on first cylinder.Sliding contact (3) is placed on the resistance wire between two winding drums, and contacts with resistance wire.Along with the number of turns on the cylinder changes, can obtain different resistances.
Good in order to guarantee the sliding contact contact, a contact spring (4) has been installed in the sliding contact back.
In order to make resistance continuous variable stably, make exit with corresponding brush (2) (5) on the drum shaft and sliding contact (3).
In order to make potentiometer be convenient to automatic control, cylinder, the motion of sliding contact drives by a direct current motor (10).
For the resistance wire on the cylinder is not got loose,, automatically tight silk device (7) (8) is set on two thread drum axles to guarantee the long-time no-failure operation of multiturn potentiometer.
In order to make the sliding contact motion not surmount two ends, cylinder left and right sides scope, be provided with the upper limit, lower limit cutoff relay (12) (11).
Potentiometer with the present invention makes can not limited by the number of turns, and manufacturer can make various number of turns potentiometers according to user's needs.
Because sliding contact between sliding contact and the resistance wire has very high precision and reliability when having guaranteed potentiometer work, the cylinder change in resistance that whenever turns around is 1/150 of a maximum value.
Owing to adopted the direct current machine driving, potentiometer is easy to realize automatic control, is convenient to be used with microcomputer.
It successfully is used in the accurate system of the temperature device and replaces original valuator, makes micromanipulator control intensification, cooling and insulation.When potentiometer is got following data: 0.8 millimeter of resistance wire diameter, thread drum number of threads 160, coiling 150, during 80 millimeters of diameter of cylinder φ, 36 meters of resistance wire total lengths, the potentiometer maximum value is 90 Ω, and the thread drum resistance that whenever circles changes 0.6 Ω, and it is adjustable continuously to 15mv by 0.1mv that valuator is set the millivolt number.
Claims (6)
1, a kind of potentiometer is made up of cylinder, resistance wire and contact.Feature of the present invention is by two thread drums that are synchronized with the movement [1] [6]; Resistance wire [9] two ends are separately fixed on two cylinders, and can pour on another cylinder from a cylinder; Contact [3] slides, and it does the conduction contact on the resistance wire between the winding drum.
2, a kind of according to claim 1 said potentiometer, it is characterized in that driving thread drum by motor (10) is synchronized with the movement, and drives sliding contact simultaneously.
3, a kind of according to claim 1 said potentiometer, it is characterized in that adding a contact spring (4) behind the sliding contact (3).
4, a kind of according to claim 1 said potentiometer, it is characterized in that on two drum shafts, being provided with automatic screwing apparatus structure (7) (8).
5, a kind of according to claim 1 said potentiometer, it is characterized in that on the thread drum axle, having settled brush (2) (5).
6, a kind of according to claim 1 said potentiometer, it is characterized in that in device, having settled the upper limit (12), lower limit (11) cutoff relay.In case sliding stop contact (3) motion the time is crossed the border.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200310 CN85200310U (en) | 1985-04-01 | 1985-04-01 | High-accuracy self-driving potentiometer with a hundred civcles of coil and double rollers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85200310 CN85200310U (en) | 1985-04-01 | 1985-04-01 | High-accuracy self-driving potentiometer with a hundred civcles of coil and double rollers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN85200310U true CN85200310U (en) | 1985-11-10 |
Family
ID=4796690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85200310 Ceased CN85200310U (en) | 1985-04-01 | 1985-04-01 | High-accuracy self-driving potentiometer with a hundred civcles of coil and double rollers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85200310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252839A (en) * | 2011-05-10 | 2011-11-23 | 中国人民解放军军事交通学院 | Automatic control device for accelerated test of automobile transmission fault test bed |
| CN105006324A (en) * | 2015-07-30 | 2015-10-28 | 成都中微电微波技术有限公司 | Wireless control rolling potentiometer |
-
1985
- 1985-04-01 CN CN 85200310 patent/CN85200310U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102252839A (en) * | 2011-05-10 | 2011-11-23 | 中国人民解放军军事交通学院 | Automatic control device for accelerated test of automobile transmission fault test bed |
| CN105006324A (en) * | 2015-07-30 | 2015-10-28 | 成都中微电微波技术有限公司 | Wireless control rolling potentiometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |