CN102810374A - Slide-wire resistor - Google Patents
Slide-wire resistor Download PDFInfo
- Publication number
- CN102810374A CN102810374A CN 201210272380 CN201210272380A CN102810374A CN 102810374 A CN102810374 A CN 102810374A CN 201210272380 CN201210272380 CN 201210272380 CN 201210272380 A CN201210272380 A CN 201210272380A CN 102810374 A CN102810374 A CN 102810374A
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- CN
- China
- Prior art keywords
- resistance
- slide
- contact wheel
- wire layer
- guide rail
- 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.)
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Abstract
The invention discloses a slide-wire resistor which comprises a resistance wire layer and a lead rail, wherein a sliding rod is arranged3on the lead rail and provided with a contact wheel at the lower end; the contact wheel is in match with the resistance wire layer; and moreover, the lead rail, the sliding rod and the contact wheel are electrically connected. Preferentially, the edge of the contact wheel is in shape of a pointed cone. The slide-wire resistor has the advantages that the service life of the slide-wire resistor is relatively long, and the resistance variation precision is relatively high.
Description
Technical field
The present invention relates to the electronic component technology field, especially relate to a kind of slide wire resistance.
Background technology
Slide wire resistance is electronic devices and components commonly used in laboratory and the electric power system.General, slide wire resistance comprises earthenware and guide rail, and is wound with the resistance wire layer on the earthenware, guide rail is provided with slide block.Like this, through the displacement of slide block on the resistance wire layer, the variation of resistance between the terminal that terminal that the realization guide rail connects and resistance wire layer connect.Its defective is: slide block is realized being connected through closely contacting with the resistance wire layer, and serious wear between the two causes slide wire resistance to use birthday noodle to reduce.Therefore be necessary to improve.
Summary of the invention
Deficiency to above-mentioned prior art exists the purpose of this invention is to provide a kind of slide wire resistance, and it has long characteristics in useful life.
To achieve these goals, the technical scheme that the present invention adopted is: slide wire resistance comprises resistance wire layer and guide rail; Said guide rail is provided with slide bar; The slide bar lower end is provided with contact wheel, and this contact wheel and resistance wire layer match, and guide rail, slide bar, contact wheel are electrically connected.
The edge of said contact wheel is a sharp cone distal.
After adopting said structure, the present invention compares the advantage that is had with prior art and is: 1, slide wire resistance uses mission longer.Slide wire resistance of the present invention is realized the variation of resistance through the displacement of contact wheel on the resistance wire layer.Obviously, the wearing and tearing between contact wheel and the resistance wire layer are minimum, thereby effectively prolonged the useful life of slide wire resistance.2, the change in resistance precision is higher.The edge of contact wheel is cone-shaped, and like this, the contact area between contact wheel and the resistance wire layer is minimum, thereby can accurately control the variation of resistance.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified:
Fig. 1 is the front view of embodiments of the invention;
Fig. 2 is that A-A of Fig. 1 is to view.
Among the figure: 10, resistance wire layer; 20, guide rail; 30, slide bar; 40, contact wheel.
Embodiment
The following stated is merely preferred embodiment of the present invention, does not therefore limit protection scope of the present invention.
Embodiment, see illustrated in figures 1 and 2: slide wire resistance, comprise resistance wire layer 10 and guide rail 20, certainly, resistance wire layer 10 is connected with binding post respectively with guide rail 20.Wherein, guide rail 20 is provided with slide bar 30, and slide bar 30 lower ends are provided with contact wheel 40, and this contact wheel 40 matches with resistance wire layer 10.That is, the edge of contact wheel 40 closely contacts with resistance wire layer 10, thereby realizes the electrical connection of contact wheel 40 and resistance wire layer 10.Simultaneously, guide rail 20, slide bar 30, contact wheel 40 are electrically connected.Certainly, slide bar 30 is non-rotatable with respect to guide rail 20.Like this, along with the realization displacement that contact wheel 40 rolls on resistance wire layer 10, the resistance between the binding post that resistance wire layer 10 and guide rail 20 connect is respectively changed.Because contact wheel 40 rolls on resistance wire layer 10, thereby the wearing and tearing between the two are minimum.
Optimize, the edge of contact wheel 40 is a sharp cone distal.Like this, improved the change in resistance precision of slide wire resistance.
Claims (2)
1. slide wire resistance; Comprise resistance wire layer (10) and guide rail (20); It is characterized in that: said guide rail (20) is provided with slide bar (30); Slide bar (30) lower end is provided with contact wheel (40), and this contact wheel (40) and resistance wire layer (10) match, and guide rail (20), slide bar (30), contact wheel (40) are electrically connected.
2. slide wire resistance according to claim 1 is characterized in that: the edge of said contact wheel (40) is a sharp cone distal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210272380 CN102810374A (en) | 2012-08-02 | 2012-08-02 | Slide-wire resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210272380 CN102810374A (en) | 2012-08-02 | 2012-08-02 | Slide-wire resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102810374A true CN102810374A (en) | 2012-12-05 |
Family
ID=47234060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210272380 Pending CN102810374A (en) | 2012-08-02 | 2012-08-02 | Slide-wire resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102810374A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269236A (en) * | 2014-09-24 | 2015-01-07 | 昆山超强光电设备有限公司 | Wheel contact type resistor |
| CN112908598A (en) * | 2021-01-21 | 2021-06-04 | 卢东生 | Resistance equipment with pulley |
-
2012
- 2012-08-02 CN CN 201210272380 patent/CN102810374A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104269236A (en) * | 2014-09-24 | 2015-01-07 | 昆山超强光电设备有限公司 | Wheel contact type resistor |
| CN112908598A (en) * | 2021-01-21 | 2021-06-04 | 卢东生 | Resistance equipment with pulley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121205 |