CN202196633U - High-precision wire-wound preset potentiometer - Google Patents
High-precision wire-wound preset potentiometer Download PDFInfo
- Publication number
- CN202196633U CN202196633U CN2011202918787U CN201120291878U CN202196633U CN 202196633 U CN202196633 U CN 202196633U CN 2011202918787 U CN2011202918787 U CN 2011202918787U CN 201120291878 U CN201120291878 U CN 201120291878U CN 202196633 U CN202196633 U CN 202196633U
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- winding
- wound
- wire
- out terminal
- contact spring
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Abstract
The utility model discloses a high-precision wire-wound preset potentiometer. The potentiometer comprises a base, a winding, a lead-out terminal, a contact spring and a rotary block, wherein both the winding and the lead-out terminal are arranged on the base; the contact spring is fixed on the rotary block through a spring support; a seal ring is arranged on the rotary block; the winding is manufactured by a resistance wire with the diameter of 0.055mm in a clearance winding manner; the winding and the lead-out terminal are welded through spot welding and high-temperature welding; and contacts of the contact spring are manufactured by precious metal wires. The wire-wound preset potentiometer has the advantages of high precision, good performance and lower cost.
Description
Technical field
The utility model relates to a kind of potentiometer, particularly a kind of high-precision wire-wound preset potentiometer.
Background technology
The wire-wound preset potentiometer is a kind of application potentiometer comparatively widely; Make current-limiting resistance or voltage divider and use, along with the reach of science, military complete machine requires increasingly high to the environmental suitability of wire-wound preset potentiometer; Require also increasingly high to its parts; The annular coiling commonly used of the winding technique of existing potentiometer forms, because this product required precision is higher, annular coiling can not be satisfied product requirement; Install because such potentiometer often is applied to printed board, its exit and the inner solder joint close together that is used to be electrically connected are prone to melting phenomenon, thereby influence properties of product during secondary welding; Wire-wound preset potentiometer contact spring adopts zinc white copper strips or beryllium bronze band to be made usually; And then electroplate to enhance product performance, for improving the product environmental suitability, contact spring adopts precious metal material more and more widely; Because noble metal is more expensive; It is very high that full wafer is made its production cost of contact spring, and management difficulty is very big, thereby product cost is significantly increased.
Summary of the invention
The purpose of the utility model just is to provide a kind of precision high, and performance is good, and lower-cost high-precision wire-wound preset potentiometer, can effectively address the above problem.
To achieve these goals; The technical scheme that the utility model adopts is such: the high-precision wire-wound preset potentiometer of the utility model; Comprise pedestal, winding, leading-out terminal, contact spring and switch block, said winding and leading-out terminal are arranged on the pedestal, and contact spring is fixed on the switch block through a leaf support; Switch block is provided with sealing ring; Said winding is that the resistance wire of 0.055mm adopts the method for gap coiling to be made by diameter, and winding adopts spot welding and high-temperature soldering with leading-out terminal, and the contact employing precious metal of contact spring is made.
As preferably, said winding is that the card agate resistance wire of 0.055mm adopts the method for the parallel winded in gap to be made by diameter.
As preferably, said winding and leading-out terminal adopt resistance spot welding and the welding of 295 high temperature solder sticks.
As preferably, said precious metal is PtIr10, and diameter is 0.8mm.
Compared with prior art, the advantage of the utility model is: winding is to adopt the method for parallel winded to be made with the resistance wire of diameter phi 0.055mm, has improved the coiling precision of winding greatly; The mode of resistance spot weld spot welding and high-temperature soldering is adopted in winding and exit welding, has thoroughly solved the product test problem of anti-the sweating heat; The contact of PtIr10 precious metal as contact spring adopted in the contact spring contact, improved the antioxygenic property of potentiometer contact, improved the quality and the long-term dependability of potentiometer, makes the consistency of potentiometer better, reliability is higher, the life-span is longer.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
To combine accompanying drawing that the utility model is described further below.
Referring to Fig. 1, the high-precision wire-wound preset potentiometer of the utility model comprises pedestal 1, winding 2, leading-out terminal 3, contact spring 6, switch block 4, housing 8 and epoxy resin lid 9; Said winding 2 is arranged on the pedestal 1 with leading-out terminal 3; Contact spring 6 is fixed on the switch block 4 through a leaf support 5, and switch block 4 is provided with sealing ring 7, and winding 2 is that the card agate resistance wire of 0.055mm adopts the method for the parallel winded in gap to be made by diameter; Winding 2 adopts resistance spot welding and the welding of 295 high temperature solder sticks with leading-out terminal 3; The contact of contact spring 6 adopts precious metal to be made, and said precious metal is PtIr10, and diameter is 0.8mm.
Winding 2 is made: enamel-cover circle winding wire is clamped on the accurate parallel coil winding machine, and the inspection enameled wire surface quality, enamelled wire should be smooth, smooth; Do not have the lacquer knurl, start accurate parallel coil winding machine, coiling card agate resistance wire on enamel-cover circle winding wire; On special-purpose winding shaping jig, be shaped to the helical form winding then, again the helical form winding cut from the centre, go into single winding; Be bonded at last on the insulating base, process winding 2.
Winding 2 and leading-out terminal welding: earlier with a wide about 0.8mm, be about the zinc white copper strips doubling bending of 6mm, thick 0.1mm; Then with resistance spot weld with the spot welding of zinc white copper strips on leading-out terminal; Again potentiometer winding 2 terminal resistance silks are twined 1～2 circle on the zinc white copper strips; Afterwards the bending of zinc white copper strips is come to push down the terminal resistance silk, resistance wire and packfong are welded, once more leading-out terminal exposed surface and packfong are welded together with this high temperature scolding tin simultaneously with high temperature scolding tin.
The contact spring 6 of band noble metal contact is made: after contact spring 6 is electroplated; Precious metal is cut into the long segment of 3mm; Contact spring 6 is placed on the special welding anchor clamps with the precious metal section, and in microscopically welding precious metal, the precious metal working surface should not have scolding tin.
Claims (4)
1. high-precision wire-wound preset potentiometer; Comprise pedestal, winding, leading-out terminal, contact spring and switch block, it is characterized in that: said winding and leading-out terminal are arranged on the pedestal, and contact spring is fixed on the switch block through a leaf support; Switch block is provided with sealing ring; Said winding is that the resistance wire of 0.055mm adopts the method for gap coiling to be made by diameter, and winding adopts spot welding and high-temperature soldering with leading-out terminal, and the contact employing precious metal of contact spring is made.
2. a kind of high-precision wire-wound preset potentiometer according to claim 1 is characterized in that: said winding is that the card agate resistance wire of 0.055mm adopts the method for the parallel winded in gap to be made by diameter.
3. a kind of high-precision wire-wound preset potentiometer according to claim 1 is characterized in that: said winding and leading-out terminal adopt resistance spot welding and the welding of 295 high temperature solder sticks.
4. a kind of high-precision wire-wound preset potentiometer according to claim 1, it is characterized in that: said precious metal is PtIr10, diameter is 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202918787U CN202196633U (en) | 2011-08-12 | 2011-08-12 | High-precision wire-wound preset potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202918787U CN202196633U (en) | 2011-08-12 | 2011-08-12 | High-precision wire-wound preset potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202196633U true CN202196633U (en) | 2012-04-18 |
Family
ID=45951534
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202918787U Expired - Lifetime CN202196633U (en) | 2011-08-12 | 2011-08-12 | High-precision wire-wound preset potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202196633U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008834A (en) * | 2014-06-09 | 2014-08-27 | 常州市零伍壹玖电子有限公司 | Grid-type contact plate carbon membrane potentiometer |
| CN107367225A (en) * | 2017-07-17 | 2017-11-21 | 深圳市昌龙盛机电技术有限公司 | A kind of displacement transducer and its manufacture craft |
-
2011
- 2011-08-12 CN CN2011202918787U patent/CN202196633U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104008834A (en) * | 2014-06-09 | 2014-08-27 | 常州市零伍壹玖电子有限公司 | Grid-type contact plate carbon membrane potentiometer |
| CN107367225A (en) * | 2017-07-17 | 2017-11-21 | 深圳市昌龙盛机电技术有限公司 | A kind of displacement transducer and its manufacture craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120418 |
|
| CX01 | Expiry of patent term |