WO2005122191A1 - チップ型可変式電子部品及びチップ型可変抵抗器 - Google Patents
チップ型可変式電子部品及びチップ型可変抵抗器 Download PDFInfo
- Publication number
- WO2005122191A1 WO2005122191A1 PCT/JP2005/007154 JP2005007154W WO2005122191A1 WO 2005122191 A1 WO2005122191 A1 WO 2005122191A1 JP 2005007154 W JP2005007154 W JP 2005007154W WO 2005122191 A1 WO2005122191 A1 WO 2005122191A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- type variable
- insulating substrate
- chip
- rotor
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
- H01C10/30—Adjustable resistors the contact sliding along resistive element
- H01C10/32—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path
- H01C10/34—Adjustable resistors the contact sliding along resistive element the contact moving in an arcuate path the contact or the associated conducting structure riding on collector formed as a ring or portion thereof
Definitions
- the present invention relates to a chip-type variable electronic component and a variable resistor, in which a rotor for adjusting, for example, a resistance value or a capacitor capacity is rotatably mounted on an upper surface of a chip-shaped insulating substrate. It is about a vessel.
- a chip-type variable resistor which is a representative of the variable electronic component, is disclosed in Patent Document 1 and, as is well known, has a chip-type variable resistor and a through hole at the center thereof.
- an intermediate terminal electrode plate made of a metal plate integrally provided with a shaft fitted into the through hole is fixed, while on the upper surface side of the insulating substrate, an adjusting rotor made of a metal plate is fixed.
- the rotor is rotatably mounted on the upper end of the shaft, and the rotor is mounted on the upper surface of a bowl-shaped first plate capable of receiving a driver tool for rotating the rotor.
- the second press connected integrally via the folded connection
- the first plate is provided with a slider that contacts the resistive film, and the second plate is provided with a driver engagement hole into which the driver tool is fitted. .
- a conventional chip-type variable resistor includes a stopper protruding from the upper surface of the insulating substrate to a middle terminal electrode plate disposed on the lower surface of the insulating substrate.
- the adjusting rotor is, as described above, a bowl-shaped upper surface of a first plate capable of receiving a driver tool for rotating the rotor. And a second plate integrally connected to the first plate via a folded connection portion, and a slider that contacts the resistive film is provided on the first plate.
- the second plate has a structure in which a driver engagement hole into which the driver tool is fitted is formed in the second plate. In other words, the second plate is provided with a driver tool inserted into the driver engagement hole formed in the second plate.
- the first plate provided with a slider that comes into contact with the resistive film is rotated by rotating the first plate, and the first plate is rotated while the slider provided on the first plate is in contact with the resistive film.
- the folded connection between the plate and the second plate has a U-shape in the horizontal direction, and rotation is transmitted from the second plate to the first plate through the folded U-shaped connection in the horizontal direction.
- Patent Document 1 For this reason, in Patent Document 1 described above, deformation is prevented by increasing the width of the folded connection portion. However, increasing the width of the folded connection portion is difficult. In addition to making bending work in the folded connection portion difficult, it also causes an increase in weight. In addition, when the rotation angle of the rotor is restricted by abutting against the stopper piece of the folded connection portion, the force is also increased. The rotation angle is reduced by the width of the folded connecting portion.
- the folded connection portion is configured to contact the stopper piece, so that the stopper piece protrudes from the upper surface of the insulating substrate. Since the height of the stopper must be increased until the stopper reaches the folded U-shaped connecting portion, the strength of the stopper against falling and deforming in the rotation direction of the rotor due to the rotation of the rotor. There is a problem that is reduced.
- the falling strength of the stopper piece can be improved by widening the width of the stopper piece along the rotation direction of the rotor. However, making the stopper piece wider makes the weight increase. At the same time, the rotation angle of the rotor is reduced by the width of the stopper piece.
- Patent Document 1 JP-A-11-354307
- a first aspect of the present invention is to provide an insulating substrate and an adjusting rotor made of a metal plate, which is rotatably disposed on the upper surface side of the insulating substrate.
- a first plate which is integrally connected to the first plate via a folded connection portion on an upper surface of a first plate having a bowl shape so as to receive a driver tool for rotating the rotor.
- the folded connection portion is It is characterized by being bent downward with respect to the upper surface of the second plate.
- the downwardly bent portion of the folded connection portion is brought into contact with a stopper piece projecting toward the upper surface side of the insulating substrate. It is characterized by the fact that it is configured as follows.
- a third aspect of the present invention is characterized in that, in the second aspect, the stopper piece is bent upward from a middle terminal electrode plate provided on a lower surface of the insulating substrate.
- the stopper piece is provided integrally with a contact piece that comes into contact with the upper surface of the insulating substrate.
- the chip-type variable electronic component is provided on the insulating substrate with an arc-like shape centered on the through hole. And an external terminal electrode with respect to both ends of the resistive film, and a slider that slidably contacts the resistive film on the adjusting rotor.
- the folded connection portion is bent downward with respect to the upper surface of the second plate, so that the folded connection portion changes from a horizontal U-shape to an upward U-shape.
- the first plate is removed from the second plate.
- the rotation transmission force is transmitted to the plate, and the rotation transmission force can be improved as compared with the case where the folded connection portion has a horizontal U-shape. Deformation so as to be displaced from each other can be reliably reduced without increasing the width of the folded connection as in the conventional case.
- the downwardly bent portion of the folded connection portion is configured to contact a stopper piece protruding toward the upper surface side of the insulating substrate.
- the height of the protrusion of the piece from the upper surface of the insulating substrate is lower than when the stopper piece comes into contact with the folded connection portion, so that the stopper piece falls down in the rotation direction due to the rotation of the rotor.
- the strength of the stopper can be reliably increased without increasing the width of the stopper piece and, consequently, without increasing the weight and reducing the rotation angle of the rotor.
- the stopper piece is provided by bending the stopper piece upward with the middle terminal electrode plate disposed on the lower surface of the insulating substrate. This can be easily achieved using the middle terminal electrode plate.
- the stopper piece integrally with a contact piece that contacts the upper surface of the insulating substrate, the insulating substrate is sandwiched between the stopper pieces from above and below. Since the stopper piece is attached, the strength when the stopper piece falls down in the rotation direction of the rotor can be further improved, and the fixing strength of the middle terminal electrode plate to the insulating substrate can be improved.
- the chip-type variable resistor can be configured to have each of the above-described effects.
- FIG. 1 is a plan view of a variable resistor according to an embodiment of the present invention.
- FIG. 2 is a sectional view taken along the line II-II of FIG. 1.
- FIG. 3 is a plan view when a rotor is rotated.
- FIG. 4 is a cross-sectional view showing a modification of a stopper piece.
- FIG. 5 is a plan view showing another modification of the stopper piece.
- FIG. 6 is a sectional view taken along line VI-VI of FIG. 7. Explanation of reference numerals
- FIG. 1 a drawing (FIG. 1) in which an embodiment of the present invention is applied to a chip-type variable resistor.
- reference numeral 1 denotes a chip-type variable resistor
- the chip-type variable resistor 1 is composed of a chip-type insulating substrate 2 made of a heat-resistant insulating material such as a ceramic, and a chip-type variable resistor.
- Edge board 1 denotes a chip-type variable resistor
- the chip-type variable resistor 1 is composed of a chip-type insulating substrate 2 made of a heat-resistant insulating material such as a ceramic, and a chip-type variable resistor.
- the insulating substrate 2 is provided with a through-hole 5 penetrating from the upper surface to the lower surface substantially at the center thereof, and a resistive film 6 is formed on the upper surface thereof so as to extend in an arc with the through-hole 5 as a center.
- the middle terminal electrode plate 4 is made of a metal plate, is in close contact with the lower surface of the insulating substrate 2, and has a hollow shaft portion inserted into the through hole 5 at the portion of the through hole 5. 9, a stopper piece 10 formed by bending upward is provided on the other side surface 2b of the insulating substrate 2.
- the rotor 3 is integrally connected to a first plate 11 formed of a metal plate and formed in a bowl shape having a flange on the outer periphery, and a folded connection portion 12 to the first plate 11.
- the second plate 13 has a cross-shaped driver engagement hole 14 formed therein, and the second plate 13 overlaps the upper surface of the first plate 10 from the folded connection portion 12.
- a slit hole 15 extending in a substantially semicircular shape is formed in a portion of the first plate 10 opposite to the folded connection portion 12. The portion outside the slit hole 15 is configured as a slider 16 that elastically contacts the resistive film 5.
- the rotor 3 has a mounting hole 18 formed in the bottom plate 17 of the first plate 10 of the rotor 3 on the upper surface side of the insulating substrate 2 and an upper end of the hollow shaft portion 9.
- the shaft portion After being supplied so that the lower surface of the bottom plate 17 is in close contact with the upper surface of the insulating substrate 2 and the slider 16 is elastically contacted with the resistance film 5, the shaft portion is By crimping the upper end of 9 outwardly, it is mounted on the shaft 9 so as to freely rotate about the shaft 9 as a center axis.
- the folded connection portion 12 is bent downward, and the portion bent downward is brought into contact with the stopper piece 10.
- the rotor 3 is rotated left and right by a driver tool inserted into the driver engagement hole 14 in the second plate 13.
- the folded connection portion 12 is bent downward with respect to the upper surface of the second plate, so that the folded connection portion 12 changes from a horizontal U-shape to an upward U-shape.
- the second plate 13 is connected to the first plate. Rotation transmission to the rate 11 is performed, and the rotation transmission force can be improved as compared with the case where the folded connection portion 12 is in a horizontal U-shape, so that the folded connection portion 12 is connected to the first plate 11 and the second plate 11. Deformation so that the plate 13 and the plate 13 are shifted from each other can be reliably reduced.
- the downwardly bent portion approaches the upper surface of the insulating substrate 2, and thereby the stopper piece 10 in contact with the stopper piece 10 contacts the insulating substrate 2. Since the protrusion height H of the upper surface force of the insulating substrate 2 can be made lower than when the folded connection portion 12 is not bent downward, the stopper piece falls down in the rotation direction due to the rotation of the rotor 3. In particular, the strength to withstand the above can be reliably improved without making the towel piece 10 wider.
- the thickness of the shaft portion 9 of the middle terminal electrode plate 4 is reduced, and a film 19 for closing the inside of the shaft portion 9 is adhered to the lower surface thereof. Therefore, when mounting by soldering to a printed circuit board or the like, the configuration is such that the flux at the time of soldering is prevented from entering the inside of the rotor 3.
- the stopper piece 10 may have a structure in which a contact piece 1 (/) that comes into contact with the upper surface of the insulating substrate 2 is integrally provided.
- the stopper piece 10 can hold the insulating substrate 2 between the contact piece 10 'provided integrally therewith and the middle terminal electrode plate 4 with both upper and lower forces. Therefore, the strength of the stopper piece 10 when it falls down in the rotation direction of the rotor 3 can be further greatly improved.
- the fixing of the middle terminal electrode plate 4 to the insulating substrate 2 The mounting of the rotor 3 on the shaft portion 9 integrally provided on the middle terminal electrode plate 4 by force-fitting, and the clamping of the insulating substrate 2 by the contact piece 10 ′ integrally provided on the stopper piece 10. Since the fixing is performed at two places, the fixing strength of the middle terminal electrode plate 4 to the insulating substrate 2 can be improved.
- the stopper piece may be configured as a stopper piece 10 having a U-shaped cross section.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/597,042 US7817011B2 (en) | 2004-05-20 | 2005-04-13 | Chip type variable electronic part and chip type variable resistor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004150872A JP4400869B2 (ja) | 2004-05-20 | 2004-05-20 | チップ型可変式電子部品及びチップ型可変抵抗器 |
| JP2004-150872 | 2004-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005122191A1 true WO2005122191A1 (ja) | 2005-12-22 |
Family
ID=35487451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/007154 Ceased WO2005122191A1 (ja) | 2004-05-20 | 2005-04-13 | チップ型可変式電子部品及びチップ型可変抵抗器 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7817011B2 (ja) |
| JP (1) | JP4400869B2 (ja) |
| KR (1) | KR20070029117A (ja) |
| CN (1) | CN100555480C (ja) |
| TW (1) | TW200606959A (ja) |
| WO (1) | WO2005122191A1 (ja) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101420328B1 (ko) | 2011-01-27 | 2014-07-16 | 삼성디스플레이 주식회사 | 디스플레이 장치용 가변 저항 장치와, 이를 이용한 가변 저항 조정 방법 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03101502U (ja) * | 1990-02-02 | 1991-10-23 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2561349B2 (ja) | 1989-09-14 | 1996-12-04 | アイシン精機株式会社 | 移動体上アンテナの姿勢制御装置 |
| JP3101502B2 (ja) | 1994-09-30 | 2000-10-23 | 三洋電機株式会社 | 自動洗髪機 |
| JPH08191005A (ja) * | 1995-01-10 | 1996-07-23 | Rohm Co Ltd | チップ型可変抵抗器 |
| JP4790098B2 (ja) | 1997-09-09 | 2011-10-12 | パナソニック株式会社 | 可変抵抗器 |
| JP3440884B2 (ja) * | 1999-06-14 | 2003-08-25 | 株式会社村田製作所 | 可変抵抗器 |
| JP3101502U (ja) * | 2002-11-28 | 2004-06-17 | 久司 黒木 | 安定化二酸化塩素液に紫外線殺菌燈を照射し、二酸化塩素液に改質して温水循環回路に注入し、殺菌浄化防臭防腐蝕効果を得る装置。 |
-
2004
- 2004-05-20 JP JP2004150872A patent/JP4400869B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-13 US US11/597,042 patent/US7817011B2/en active Active
- 2005-04-13 WO PCT/JP2005/007154 patent/WO2005122191A1/ja not_active Ceased
- 2005-04-13 CN CNB2005800017660A patent/CN100555480C/zh not_active Expired - Fee Related
- 2005-04-13 KR KR1020067008983A patent/KR20070029117A/ko not_active Withdrawn
- 2005-04-26 TW TW094113291A patent/TW200606959A/zh unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03101502U (ja) * | 1990-02-02 | 1991-10-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4400869B2 (ja) | 2010-01-20 |
| KR20070029117A (ko) | 2007-03-13 |
| CN1906709A (zh) | 2007-01-31 |
| US20080164971A1 (en) | 2008-07-10 |
| CN100555480C (zh) | 2009-10-28 |
| JP2005333025A (ja) | 2005-12-02 |
| US7817011B2 (en) | 2010-10-19 |
| TW200606959A (en) | 2006-02-16 |
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