CN204668042U - A kind of slide rheostat - Google Patents
A kind of slide rheostat Download PDFInfo
- Publication number
- CN204668042U CN204668042U CN201520250357.5U CN201520250357U CN204668042U CN 204668042 U CN204668042 U CN 204668042U CN 201520250357 U CN201520250357 U CN 201520250357U CN 204668042 U CN204668042 U CN 204668042U
- Authority
- CN
- China
- Prior art keywords
- resistance
- slide rheostat
- movable pulley
- earthenware
- metallic rod
- Prior art date
- 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 relates to a kind of slide rheostat, comprise two installation columns, between described installation column, earthenware is installed, described earthenware is wound with resistance wire, this slide rheostat also comprises binding post, Metallic rod and slide plate, described slide plate is slidably mounted in Metallic rod, described earthenware is provided with guide groove, the lower end of described slide plate is provided with movable pulley, described movable pulley slides thus changes the length being linked into resistance wire in circuit in guide groove, and then changes the size of slide rheostat resistance.The utility model is reasonable in design, movable pulley is combined with guide groove and uses, the change being realized resistance by the displacement on resistance wire due to the wearing and tearing between movable pulley and chute minimum, thus effectively extend the useful life of slide rheostat, and change in resistance precision is higher.
Description
Technical field
The utility model relates to technical field of electronic components, particularly relates to a kind of slide rheostat.
Background technology
Slide rheostat is a critical elements in circuit, and it can change the resistance of self by the position of mobile slide plate, thus plays the effect of control circuit.In circuit analysis, slide rheostat both can as a fixed value resistance, also can as a resistance-changing resistor.Its operation principle changes resistance by the length of change place in circuit partial ohmic line, thus change the size of current in circuit gradually.The resistance wire of slide rheostat is generally that fusing point is high, the nichrome that resistance is large, and Metallic rod is generally the metal that resistance is little, so when resistance cross section area one timing, resistance wire is longer, and resistance is larger, and resistance wire is shorter, and resistance is less.
General slide rheostat comprises earthenware and slide rail, and earthenware is wound with resistance wire, and slide rail is provided with slide block, and slide block realizes being connected by close contact with resistance wire, and serious wear therebetween, causes reduce the useful life of slide rheostat.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of slide rheostat, to improve its accuracy and stability.
The utility model is achieved through the following technical solutions:
A kind of slide rheostat, comprise two installation columns, between described installation column, earthenware is installed, described earthenware is wound with resistance wire, and this slide rheostat also comprises binding post, Metallic rod and slide plate, and described slide plate is slidably mounted in Metallic rod, described earthenware is provided with guide groove, the lower end of described slide plate is provided with movable pulley, and described movable pulley slides thus changes the length being linked into resistance wire in circuit in guide groove, and then changes the size of slide rheostat resistance.
As optimal technical scheme of the present utility model, described Metallic rod is provided with graduation mark, and increases successively from the Metallic rod left side to the scale value on the right.
As optimal technical scheme of the present utility model, the side of described installation column is to being outside equipped with supporting seat.
Compared with prior art, the beneficial effects of the utility model are: the utility model is reasonable in design, movable pulley is combined with guide groove and uses, the change being realized resistance by the displacement on resistance wire due to the wearing and tearing between movable pulley and chute minimum, thus effectively extend the useful life of slide rheostat, and change in resistance precision is higher.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-earthenware; 2-resistance wire; 3-binding post; 4-Metallic rod; 5-slide plate; 6-guide groove; 7-movable pulley; 8-graduation mark; 10-installs column; 11-supporting seat.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is structural representation of the present utility model.
Described a kind of slide rheostat, comprise two installation columns 10, the side of column 10 is being installed to being outside equipped with supporting seat 11, between described installation column 10, earthenware 1 is installed, described earthenware 1 is wound with resistance wire 2, also comprise binding post 3, Metallic rod 4 and slide plate 5, described slide plate 5 is slidably mounted in Metallic rod 4, described earthenware 1 is provided with guide groove 6, the lower end of described slide plate 5 is provided with movable pulley 7, described movable pulley 7 slides thus changes the length being linked into resistance wire in circuit in guide groove 6, and then changes the size of slide rheostat resistance.
Described Metallic rod 4 is provided with graduation mark 8, and increases successively from Metallic rod 4 left side to the scale value on the right.
Movable pulley 7 combines with guide groove 6 and uses by the utility model, the change being realized resistance by the displacement on resistance wire due to the wearing and tearing between movable pulley and chute minimum, thus effectively extend the useful life of slide rheostat, and change in resistance precision is higher.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (3)
1. a slide rheostat, comprise two installation columns (10), between described installation column (10), earthenware (1) is installed, described earthenware (1) is wound with resistance wire (2), also comprise binding post (3), Metallic rod (4) and slide plate (5), described slide plate (5) is slidably mounted in Metallic rod (4), it is characterized in that: described earthenware (1) is provided with guide groove (6), the lower end of described slide plate (5) is provided with movable pulley (7), described movable pulley (7) slides thus changes the length being linked into resistance wire in circuit in guide groove (6), and then change the size of slide rheostat resistance.
2. a kind of slide rheostat according to claim 1, is characterized in that: described Metallic rod (4) is provided with graduation mark (8), and increases successively from Metallic rod (4) left side to the scale value on the right.
3. a kind of slide rheostat according to claim 1, is characterized in that: the side of described installation column (10) is to being outside equipped with supporting seat (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250357.5U CN204668042U (en) | 2015-04-23 | 2015-04-23 | A kind of slide rheostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250357.5U CN204668042U (en) | 2015-04-23 | 2015-04-23 | A kind of slide rheostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204668042U true CN204668042U (en) | 2015-09-23 |
Family
ID=54138402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520250357.5U Expired - Fee Related CN204668042U (en) | 2015-04-23 | 2015-04-23 | A kind of slide rheostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204668042U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935344A (en) * | 2016-07-26 | 2017-07-07 | 成都灯岛科技有限公司 | A kind of potentiometer |
| CN106941037A (en) * | 2016-07-26 | 2017-07-11 | 成都灯岛科技有限公司 | Potentiometer |
-
2015
- 2015-04-23 CN CN201520250357.5U patent/CN204668042U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935344A (en) * | 2016-07-26 | 2017-07-07 | 成都灯岛科技有限公司 | A kind of potentiometer |
| CN106941037A (en) * | 2016-07-26 | 2017-07-11 | 成都灯岛科技有限公司 | 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20170423 |