CN202332457U - Potentiometer - Google Patents
Potentiometer Download PDFInfo
- Publication number
- CN202332457U CN202332457U CN2011204921943U CN201120492194U CN202332457U CN 202332457 U CN202332457 U CN 202332457U CN 2011204921943 U CN2011204921943 U CN 2011204921943U CN 201120492194 U CN201120492194 U CN 201120492194U CN 202332457 U CN202332457 U CN 202332457U
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- China
- Prior art keywords
- resistance
- potentiometer
- slideway
- chip
- brush
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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.)
- Expired - Fee Related
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Abstract
The utility model discloses a potentiometer, which comprises an electric brush, a printed circuit board, chip resistors, constant resistance pins, a variable resistance pin and a casing. The printed circuit board is accommodated in the casing, a layer of copper foil sliding rail is arranged on the printed circuit board, two ends of the sliding rail are respectively connected with the constant resistance pins, and the electric brush capable of sliding on the sliding rail is arranged on the sliding rail and connected with the variable resistance pin. Gaps are arranged on the sliding rail to divide the sliding rail into eight sections of areas which are not communicated, two adjacent areas are connected in series through the chip resistors, and the chip resistors are arranged on the back of the printed circuit board. By means of the technical scheme, the potentiometer solves problems of resistor damages, pin replacement, potential service life and miniaturization of the potentiometer, simultaneously solves the problem that resistance requirements at a specific angle of an adjustable resistor are high, entire resistance error is small, and resistance change rate at each area is consistent to the requirements.
Description
Technical field
The utility model relates to electronic devices and components, particularly a kind of high precision adjustable potentiometer.
Background technology
Traditional adjustable potentiometer is general to use a kind of resistive film that plates carbon as medium, and brush slides on the surface of resistive film, slides into the required different resistances of adjustment behind the ad-hoc location of resistive film when brush.Such adjustable potentiometer of producing with common process causes the total resistance deviation of this type of potentiometer very greatly generally all will be about 20% because be difficult to guarantee the crash consistency of 100% uniformity and the thickness of resistive film the brush resistance film time; Also can't guarantee the consistency of resistance on this angle when rotating adjustable resistance to a certain angle simultaneously; Perhaps require adjustable potentiometer in whole resistive film scope, to embody the requirement that does not reach enough precisions under the situation of different rates of change again.Therefore once require the rotation adjustable potentiometer when a certain special angle judges the application scenario of specific resistance, will be perplexed.The way that can solve is only asked and is significantly improved production technology and improve precision and can significantly raise the cost undoubtedly; When being actual use, another kind method selects one by one; But, cause inconvenience to production management simultaneously because process technology limit can't satisfy harsh angle requirement.Simultaneously, also there is following problem:
(1) also some potentiometer is divided into several zones with resistive film; Interregional through a plurality of fixed value resistances; This fixed value resistance quantity is many and at random is distributed in the wiring board back; The detection that when resistance wherein damages, requires a great deal of time just can be measured the resistance of concrete corrupted, is unfavorable for keeping in repair potentiometer.Mostly fixed value resistance is 10 ~ 15 now, needs bigger shell that fixed value resistance is installed, and is unfavorable for the miniaturization of potentiometer;
(2) secondly, definite value pin and variable pin and wiring board are one-body molded on the potentiometer, and are positioned at shell, because pin links to each other with external circuitry and is easy to make pin position corrupted, therefore need the integral replacing wiring board, cause cost to increase.
The utility model content
The purpose of the utility model is to provide a kind of high precision adjustable potentiometer; Solve corrupted resistance, pin replacing problem and potentiometer miniaturization issues, also solved the problem that adjustable resistance special angle resistance is had relatively high expectations, whole resistance error is little, each regional resistance varying-ratio is consistent with requirement simultaneously.
For solving the problems of the technologies described above, the utility model provides a kind of potentiometer, comprises; Brush, printed substrate, Chip-R, decide resistance pin, variable resistance pin and shell, contain printed substrate between shell, printed substrate is provided with the slideway of one deck Copper Foil; The slideway two ends respectively with decide the resistance pin and be connected; Also be provided with the brush that can on slideway, slide on the slideway, this brush is connected with the variable resistance pin, and wherein: said slideway is provided with the slit slideway is divided into eight sections disconnected zones; Two adjacent areas are through the Chip-R series connection, and said Chip-R is arranged at the printed substrate back side.
Further; Said Chip-R is arranged at the printed substrate back side, and this Chip-R and said slit are over against should and being arranged in arc, sequence arrangement resistance successively; Conveniently find corrupted resistance; Simultaneously, the resistance negligible amounts makes potentiometer miniaturization production under the prerequisite that does not influence ad-hoc location angle function.
Further, said variable resistance pin with decide the resistance pin and be connected with outside line, link is arranged at outside the said shell, makes things convenient for pin to be electrically connected with external circuit, next is easy to observe the pin of corrupted and in time changes pin.
Further, said brush and can show that the knob of the brush anglec of rotation is connected, and this knob is arranged in the middle of the shell, makes rotary brush arrive a certain special angle, can judge specific resistance.
Through technique scheme, advanced technical staff's calculating, slideway is divided into eight sections zones; The allomeric function that so neither influences potentiometer can be produced the potentiometer miniaturization again, and the printed substrate back side and corresponding position, interregional slit are provided with arranges regular Chip-R, and circuit comes into plain view; Be easy to find corrupted resistance like this; The workload that the electrician who reduces greatly detects, secondly, installation is provided with and decides the resistance pin at the slideway two ends; In time change after this outer relay part makes things convenient for corrupted, avoid that whole wiring board is changed the cost that brings and improve.
Simultaneously, the brush of described adjustable potentiometer slides on the Copper Foil slideway of printed substrate, rather than on carbon system resistive film.The slide printed substrate of a side of brush leaves a disconnected slit on specific angle, the Copper Foil on the chute surface is divided into several zones, through resistance two Copper Foil zones that do not connect is linked together.It is continuous that the resistance pin decide with two of potentiometer respectively in the two ends of printed substrate; Brush communicates with variable resistance one pin of potentiometer, just can decide to obtain envisioning between the resistance pin when brush slides on the Copper Foil zone of corresponding printed substrate like this with potentiometer some, resistance accurately.The precision of above-mentioned transformable resistance depends on the precision of resistance fully.The precision that can arbitrarily adjust resistance according to actual needs satisfies actual needs.The precision control of the precision control ratio resistive film of Chip-R resistance will be easy to many, and normal condition can be controlled in 1%, is higher than the error range of resistive film about 20% far away.
The potentiometer of wanting to obtain the specific change rate also can be realized through the resistance of the resistance between different Copper Foils on the adjustment printed substrate.Resistance through change any resistance at diverse location can adjust resistance varying-ratio arbitrarily.The angle of potentiometer can be through printed substrate the angle in Copper Foil slit cook up the angular range in different Copper Foils zone, can set out the corresponding resistance of angle value that need accurately judge arbitrarily.
Description of drawings
Fig. 1 is the utility model front appearance sketch map;
Fig. 2 is the utility model side schematic appearance;
Fig. 3 is the utility model printed substrate sketch map;
Fig. 4 is the utility model printed substrate schematic rear view.
Embodiment
Combine accompanying drawing and embodiment that the utility model is explained further details at present:
Embodiment, to shown in Figure 4, a kind of potentiometer comprises like Fig. 1: brush, printed substrate 3, Chip-R 41, decide resistance pin 11, variable resistance pin 12 and shell 14; Shell 14 is semicircle; 14 on shell contains printed substrate 3, and printed substrate 3 is provided with the slideway 32 of one deck Copper Foil, slideway 32 two ends 31 respectively with decide resistance pin 11 and be connected; Also be provided with the brush that can on slideway 32, slide on the slideway 32; This brush is connected with variable resistance pin 12, and wherein, said slideway 32 is provided with slit 33 slideway 32 is divided into eight sections disconnected zones; Two adjacent areas are through Chip-R 41 series connection, and said Chip-R 41 is arranged at printed substrate 3 back sides.Said Chip-R 41 has seven; Said Chip-R 41 is arranged at printed substrate 3 back sides over against answering slit 33; And seven Chip-R 41 sequence arrangement cambers conveniently find corrupted Chip-R 41, simultaneously; Chip-R 41 negligible amounts make potentiometer miniaturization production under the prerequisite that does not influence ad-hoc location angle function.Said variable resistance pin 12 with decide resistance pin 11 and be connected with outside line, link is arranged at outside the said shell 14, makes things convenient for pin to be electrically connected with external circuit, next is easy to observe the pin of corrupted and in time changes pin.Further, said brush and can show that the knob 15 of the brush anglec of rotation is connected, and this knob 15 is arranged in the middle of the shell, makes rotary brush arrive a certain special angle, can judge specific resistance.
Fig. 1 is the utility model front schematic view, and two of the utility model chief components are decided resistance pin 11, is the maximum value of potentiometer two resistances of deciding 11 of resistance pins; The variable resistance pin 12 of potentiometer links to each other with internal brush, rotates to different angles through brush, can and two other decide to change between the resistance pin 11 and different resistance values.Knob 15 links to each other with brush, rotates this knob 15 and will drive brush and rotate to different angles.
Fig. 3 is the printed substrate sketch map, and these sketch map slideway 32 copper foil layers, brush slide on this slideway 32.Said slit 33 is divided into eight sections zones with slideway, and the corresponding resistance of brush can change when brush was brushed a certain side in this slit.The position in this slit 33, angle and quantity can be provided with arbitrarily, and realization this patent potentiometer can be realized the requirement of the accurate variation of resistance on some specific accurate angle.Printed substrate 3 is provided with via hole 35, and it plays the effect that the slideway 32 with printed substrate 3 upper surfaces is connected with the Chip-R of lower surface.
Fig. 4 is the printed substrate schematic rear view; Chip-R 41 is used for the slideway 32 of connected graph 3 zoness of different; This Chip-R half arc is arranged at the printed substrate back side; Make between the Copper Foil zone of coming out at interval through slit 33 and form specific resistance value, Chip-R 41 all is together in series the copper foil layer slideway 32 among Fig. 3 among the figure.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; But the those skilled in the art should be understood that; In the spirit and scope of the utility model that does not break away from appended claims and limited; Can make various variations to the utility model in form with on the details, be the protection range of the utility model.
Claims (4)
1. a novel high-accuracy adjustable potentiometer is characterized in that comprising, brush, printed substrate, Chip-R, decides resistance pin, variable resistance pin and shell; Contain printed substrate between shell; Printed substrate is provided with the slideway of one deck Copper Foil, the slideway two ends respectively with decide the resistance pin and be connected, also be provided with the brush that can on slideway, slide on the slideway; This brush is connected with the variable resistance pin; Wherein: said slideway is provided with the slit slideway is divided into eight sections disconnected zones, and two adjacent areas are through the Chip-R series connection, and said Chip-R is arranged at the printed substrate back side.
2. a kind of according to claim 1 novel high-accuracy adjustable potentiometer is characterized in that: said Chip-R has seven, and said Chip-R is arranged at the printed substrate back side, and this Chip-R and said slit are over against answering and the sequence arrangement camber.
3. a kind of according to claim 1 novel high-accuracy adjustable potentiometer is characterized in that: the link of said variable resistance pin and outside line with decide the link that the resistance pin is connected with outside line and be arranged at outside the said shell.
4. a kind of according to claim 1 novel high-accuracy adjustable potentiometer is characterized in that: said brush and can show that the knob of the brush anglec of rotation is connected, and this knob is arranged in the middle of the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204921943U CN202332457U (en) | 2011-12-01 | 2011-12-01 | Potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204921943U CN202332457U (en) | 2011-12-01 | 2011-12-01 | Potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202332457U true CN202332457U (en) | 2012-07-11 |
Family
ID=46444429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204921943U Expired - Fee Related CN202332457U (en) | 2011-12-01 | 2011-12-01 | Potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202332457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632782A (en) * | 2013-12-12 | 2014-03-12 | 东莞市长泰尔电子有限公司 | Potential encoding integrated structure |
| CN103632783A (en) * | 2013-12-12 | 2014-03-12 | 东莞市长泰尔电子有限公司 | Multifunctional encoder |
-
2011
- 2011-12-01 CN CN2011204921943U patent/CN202332457U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632782A (en) * | 2013-12-12 | 2014-03-12 | 东莞市长泰尔电子有限公司 | Potential encoding integrated structure |
| CN103632783A (en) * | 2013-12-12 | 2014-03-12 | 东莞市长泰尔电子有限公司 | Multifunctional encoder |
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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: 20120711 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |