CN203787237U - Stepping rheostat - Google Patents
Stepping rheostat Download PDFInfo
- Publication number
- CN203787237U CN203787237U CN201420135208.XU CN201420135208U CN203787237U CN 203787237 U CN203787237 U CN 203787237U CN 201420135208 U CN201420135208 U CN 201420135208U CN 203787237 U CN203787237 U CN 203787237U
- Authority
- CN
- China
- Prior art keywords
- rheostat
- stepping
- resistance
- electrical coil
- resistor core
- 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
Links
- 239000004568 cement Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000011224 oxide ceramic Substances 0.000 claims description 3
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- Adjustable Resistors (AREA)
Abstract
The utility model discloses a stepping rheostat. The stepping rheostat comprises a cylindrical resistance core and a plurality of arc resistance rings, wherein two ends of the resistance core are respectively provided with a connecting column, a first end of each arc resistance ring is connected with the side surface of the resistance core in a rotating manner through a pin shaft, the side surface of the resistance core is also provided with a fixed clamp, the fixed clamp is arranged on the opposite side of the pin shaft, and a second end of each arc resistance ring is provided with a fixed block. According to the stepping rheostat, one side of the resistance core is provided with the plurality of arc resistance rings which are in contact with the resistance core so as to control the resistance value of the rheostat, the application of a movable contact is avoided, the stepping rheostat still can work normally even when one arc resistance ring is malfunctioned, and the service life of the stepping rheostat is prolonged.
Description
Technical field
The utility model relates to a kind of rheostat, relates in particular to a kind of stepping rheostat.
Background technology
Along with scientific and technological progress and social development, electronic equipment is more and more, and wherein resistance is an indispensable part, in various electronic equipments, the figure that all has resistance, wherein rheostat, as a part for resistance, is used in the place that needs resistance-changing resistor widely; Now, many rheostats all adopt the mode of slip variable resistance, and it relies on the change of the contact position of moving contact and resistor core to change resistance, but this rheostat, as long as break down in contact, will cause part failure, and the life-span is shorter.
Utility model content
The purpose of this utility model provides a kind of stepping rheostat with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of stepping rheostat, the resistor core that comprises column type, described resistor core two ends are provided with power connecting column, described rheostat comprises a plurality of arc electrical coil resistance, the first end of a plurality of described arc electrical coil resistance is rotatably connected by the side of bearing pin and described resistor core, on the side of described resistor core, be also provided with geometrical clamp, described geometrical clamp is positioned at the offside of described bearing pin, and the second end of a plurality of described arc electrical coil resistance is provided with fixed block.
When needs change rheostatic resistance, to arc electrical coil resistance being rotated along bearing pin, it is contacted with rheostatic resistor core, can change rheostatic resistance.
Particularly, the internal diameter of described arc electrical coil resistance equals the external diameter of described resistor core.
Further, between a plurality of described arc electrical coil resistance, be provided with space.
Between arc electrical coil resistance, be provided with space, can avoid misoperation.
Preferably, the material of described bearing pin, described geometrical clamp and described fixed block is insulation plastic cement.
Preferably, described resistor core is oxide ceramic resistor core, and described arc electrical coil resistance is ZnO resistors circle.
The beneficial effects of the utility model are:
The utility model stepping rheostat is controlled its rheostatic resistance by a plurality of arc electrical coil resistance that can contact are with it set in resistor core one side, avoided use moving contact, even and if certain arc electrical coil resistance breaks down, the utility model still can normally be worked, and has postponed its useful life.
Accompanying drawing explanation
Fig. 1 is the rheostatic structural representation of the utility model stepping.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the utility model stepping rheostat, the resistor core 2 that comprises column type, resistor core 2 two ends are provided with power connecting column 1, rheostat comprises a plurality of arc electrical coil resistance 3, the first end of a plurality of arc electrical coil resistance 3 is rotatably connected by bearing pin 5 and the side of resistor core 2, on the side of resistor core 2, be also provided with geometrical clamp 7, geometrical clamp 7 is positioned at the offside of bearing pin 5, the second end of a plurality of arc electrical coil resistance 3 is provided with fixed block 6, the internal diameter of arc electrical coil resistance 3 equals the external diameter of resistor core 2, between a plurality of arc electrical coil resistance 3, be provided with space, bearing pin 5, the material of geometrical clamp 7 and fixed block 6 is insulation plastic cement, resistor core 2 is oxide ceramic resistor core, arc electrical coil resistance 3 is ZnO resistors circle.
The rheostatic operation principle of the utility model stepping is as follows:
When needs change rheostatic resistance, only arc electrical coil resistance 3 need to be rotated along bearing pin 5, it is contacted with rheostatic resistor core 2, can change rheostatic resistance, again that fixed block 6 is fixing with geometrical clamp 7, can rheostat stability increase.
Claims (5)
1. a stepping rheostat, the resistor core that comprises column type, described resistor core two ends are provided with power connecting column, it is characterized in that: comprise a plurality of arc electrical coil resistance, the first end of a plurality of described arc electrical coil resistance is rotatably connected by the side of bearing pin and described resistor core, on the side of described resistor core, be also provided with geometrical clamp, described geometrical clamp is positioned at the offside of described bearing pin, and the second end of a plurality of described arc electrical coil resistance is provided with fixed block.
2. stepping rheostat according to claim 1, is characterized in that: the internal diameter of described arc electrical coil resistance equals the external diameter of described resistor core.
3. stepping rheostat according to claim 1, is characterized in that: between a plurality of described arc electrical coil resistance, be provided with space.
4. stepping rheostat according to claim 1, is characterized in that: the material of described bearing pin, described geometrical clamp and described fixed block is insulation plastic cement.
5. stepping rheostat according to claim 1, is characterized in that: described resistor core is oxide ceramic resistor core, and described arc electrical coil resistance is ZnO resistors circle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135208.XU CN203787237U (en) | 2014-03-25 | 2014-03-25 | Stepping rheostat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420135208.XU CN203787237U (en) | 2014-03-25 | 2014-03-25 | Stepping rheostat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787237U true CN203787237U (en) | 2014-08-20 |
Family
ID=51323398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420135208.XU Expired - Fee Related CN203787237U (en) | 2014-03-25 | 2014-03-25 | Stepping rheostat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203787237U (en) |
-
2014
- 2014-03-25 CN CN201420135208.XU patent/CN203787237U/en not_active Expired - Fee Related
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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: 20140820 Termination date: 20150325 |
|
| EXPY | Termination of patent right or utility model |