CN201383398Y - Long-life contact brush - Google Patents
Long-life contact brush Download PDFInfo
- Publication number
- CN201383398Y CN201383398Y CN200920129301U CN200920129301U CN201383398Y CN 201383398 Y CN201383398 Y CN 201383398Y CN 200920129301 U CN200920129301 U CN 200920129301U CN 200920129301 U CN200920129301 U CN 200920129301U CN 201383398 Y CN201383398 Y CN 201383398Y
- Authority
- CN
- China
- Prior art keywords
- elastic sheet
- metal elastic
- contact brush
- resistance body
- resistive element
- 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
A long-life contact brush relates to components of a sliding potentiometer and a rotating potentiometer, and comprises a metal elastic sheet stretching to a resistance body, wherein a flexural section which bends towards the resistance body is pressed on one end of the metal elastic sheet, which is contacted with the resistance body, the end portion of the flexural section of the metal elastic sheet is contacted with the resistance body, and follows with the slippage of a handle or the rotation of a knob, which is used for controlling the slipping or the rotation of the contact brush, and the positions of the end portion of the flexural section of the metal elastic sheet and the resistance body are fixed for realizing the change of resistance value. The contact brush has the beneficial effects that the contact and friction of the end portion of the flexural section of the metal elastic sheet with the resistance body only can shorten the flexural section of the metal elastic sheet, but not deform and disintegrate the flexural section of the metal elastic sheet, therefore, the service life is greatly prolonged over 5,000,000 times, the structure is simple, the technology is simple, the precious metal material is saved, the movement is reliable, and the contact is sensitive.
Description
Technical field
The utility model relates to the parts of slide potentiometer and rotational potentiometer.
Background technology
Slide potentiometer and rotational potentiometer are widely used in sound equipment, power amplifier, and automobile in the products such as instrument, plays effects such as signal and volume adjusting.In the traditional slide potentiometer and the structure of rotational potentiometer, mainly comprise the resistive element (carbon plate) that is shaped on silver layer and carbon-coating, the contact brush that contacts with resistive element, by sliding or rotating handle or the knob of controlling contact brush, constantly change contact brush and the silver layer of resistive element and the contact position of carbon-coating, cause resistance to change.
As shown in Figure 1, traditional contact brush comprises that one stretches to the metal clips of resistive element, the arc protuberance that the position compacting one that contacts with resistive element on this metal clips is protruded to resistive element, the top of this arc protuberance contacts with resistive element, and phase mutual friction in slip or rotation process.This just friction makes the top of arc protuberance of metal clips of contact brush more and more thinner, even fracture and destroying, and makes potentiometer can't continue to use, and causes the useful life of slide potentiometer and rotational potentiometer on the low side, generally is no more than 1,000,000 times.
The slide potentiometer of a kind of long service life of market demand and rotational potentiometer extend the useful life of the product of its installation.
The utility model content
The utility model is intended to release a kind of long-life contact brush at the market demand.
To achieve these goals, finish above-mentioned task, a kind of long-life contact brush of the utility model is to realize like this.
A kind of long-life contact brush of structure the utility model, comprise a metal clips that stretches to resistive element, end compacting one inflection section at the described metal clips that contacts with resistive element to the resistive element inflection, the end of the described inflection section of described metal clips contacts with resistive element, and along with the slip of the handle of controlling the contact brush slip or rotating or the rotation of knob, the end of the described inflection section of described metal clips and the position of resistive element constantly change, to realize the variation of resistance.
Technique scheme is described further:
The inflection angle of the inflection section of described metal clips is greater than 90 degree.
The utility model is compared with prior art, its beneficial effect really is: the end of the described inflection section of one, described metal clips contacts with resistive element, though there is friction between the end of the described inflection section of described metal clips and the resistive element, only the described inflection section of described metal clips is shortened, can not make the described inflection section distortion, cracked of described metal clips, therefore extend greatly useful life, above 5,000,000 times.Two, simple in structure, technology is simple.Its three, save valuable metal material.Its four, reliable in action, contact is sensitive.
Description of drawings
Fig. 1 is the contact brush and the resistive element schematic diagram of prior art;
Fig. 2 is the utility model schematic diagram.
Among the figure: 1, metal clips, 2, resistive element, 3, the inflection section, 4, the inflection angle.
Embodiment
Below, in conjunction with the accompanying drawings, introduce embodiment of the present utility model.
As shown in Figure 2, a kind of long-life contact brush of the utility model, comprise a metal clips 1 that stretches to resistive element 2, end compacting one inflection section 3 at the described metal clips 1 that contacts with resistive element 2 to resistive element 2 inflections, the end of the described inflection section 3 of described metal clips 1 contacts with resistive element 2, and along with the slip of the handle of controlling the contact brush slip or rotating or the rotation of knob, the end of the described inflection section 3 of described metal clips 1 and the position of resistive element 2 constantly change, to realize the variation of resistance.
Technique scheme is described further:
The inflection angle 4 of the inflection section 3 of described metal clips 1 is greater than 90 degree.
Because surpass 5,000,000 1 useful life of metal clips as contact brush, be complementary therewith, the silver film and the carbon film layer of the resistive element 2 that contact with the end of the inflection section 3 of metal clips 1 also should be managed through wear-resisting erasure, make it have the performance of wear-resisting wiping.
Claims (2)
1, a kind of long-life contact brush, comprise a metal clips (1) that stretches to resistive element (2), it is characterized in that: in the end compacting one inflection section (3) to resistive element (2) inflection of the described metal clips (1) that contacts with resistive element (2), the end of the described inflection section (3) of described metal clips (1) contacts with resistive element (2).
2, a kind of long-life contact brush according to claim 1 is characterized in that: the inflection angle (4) of the inflection section (3) of described metal clips (1) is greater than 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920129301U CN201383398Y (en) | 2009-01-12 | 2009-01-12 | Long-life contact brush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920129301U CN201383398Y (en) | 2009-01-12 | 2009-01-12 | Long-life contact brush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201383398Y true CN201383398Y (en) | 2010-01-13 |
Family
ID=41526870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920129301U Expired - Fee Related CN201383398Y (en) | 2009-01-12 | 2009-01-12 | Long-life contact brush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201383398Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115394510A (en) * | 2022-10-31 | 2022-11-25 | 成都宏明电子股份有限公司 | Method for manufacturing long-life resistor body for conductive plastic angular displacement potentiometer |
-
2009
- 2009-01-12 CN CN200920129301U patent/CN201383398Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115394510A (en) * | 2022-10-31 | 2022-11-25 | 成都宏明电子股份有限公司 | Method for manufacturing long-life resistor body for conductive plastic angular displacement potentiometer |
| CN115394510B (en) * | 2022-10-31 | 2023-02-14 | 成都宏明电子股份有限公司 | Method for manufacturing long-life resistor body for conductive plastic angular displacement 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 |
Granted publication date: 20100113 Termination date: 20150112 |
|
| EXPY | Termination of patent right or utility model |