WO2005114681A1 - 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
- WO2005114681A1 WO2005114681A1 PCT/JP2005/007153 JP2005007153W WO2005114681A1 WO 2005114681 A1 WO2005114681 A1 WO 2005114681A1 JP 2005007153 W JP2005007153 W JP 2005007153W WO 2005114681 A1 WO2005114681 A1 WO 2005114681A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- type variable
- folded connection
- connection portion
- insulating substrate
- 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
-
- 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 is provided with a driver engagement hole in which the driver tool is fitted.
- the second plate is provided with a driver engagement hole inserted into the driver engagement hole.
- 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.
- 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 dimension must be increased until the stopper piece reaches the folded connection portion, the strength of the stopper piece against falling and deforming in the rotation direction due to the rotation of the rotor decreases. There's a problem.
- 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, increasing the width of the stopper piece increases the weight. 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.
- a pair of left and right downwardly bent pieces is provided at a portion between the folding line and the second plate in the folded connection portion, and between the two downwardly bent pieces, the folded connection portion of the folded connection portion is provided. It is characterized in that a portion between the folding line and the first plate in section and configured to fit.
- the two downwardly bent pieces are formed of a portion of the folded connection portion between the folding line at the folded connection portion and the first plate.
- the structure is characterized in that it is configured to protrude below the lower surface of the substrate and abut on a stopper piece protruding toward the upper surface of the insulating substrate.
- 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.
- a pair of left and right downwardly bent pieces is provided at a portion of the folded connection portion between the folding line at the folded connection portion and the second plate.
- the second plate is configured such that a portion of the folded connecting portion between the bent line at the folded connecting portion and the first plate fits between the two downwardly bent pieces.
- the two downwardly bent pieces are projected below the lower surface of a portion of the folded connection portion between the folding line at the folded connection portion and the first plate.
- the stopper piece protruding to the upper surface side of the insulating substrate is configured to contact the stopper piece. Therefore, the strength of the stopper piece against falling and deforming in the rotation direction due to the rotation of the rotor can be reduced without increasing the width of the stopper piece, thereby increasing the weight and reducing the weight.
- the rotation angle can be reliably improved without reducing the rotation angle of the motor.
- 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 sectional view taken along the line III-III of FIG. 2.
- FIG. 4 is a development view of a rotor.
- FIG. 5 is a plan view when the rotor is rotated.
- FIG. 6 is a cross-sectional view showing a modification of the stopper piece.
- FIG. 7 is a plan view showing another modification of the stopper piece.
- FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7.
- 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. It comprises an adjusting rotor 3 disposed on the upper surface of the edge substrate 2 and a middle terminal electrode plate 4 disposed on the lower surface of the insulating substrate 2.
- 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.
- external terminal electrodes 7, 8 for both ends of the resistive film 5 are provided on one side surface 2a of the insulating substrate 2.
- 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.
- a pair of left and right downwardly bent pieces 19 are integrally provided in a portion 12a of the folded connection portion 12 between the bending line 12 'of the folded connection portion 12 and the second plate 13. The portion 12b between the bent line 12 'of the folded connection portion 12 and the first plate 11 of the folded connection portion 12 is fitted between the downwardly bent pieces 19.
- the two downwardly bent pieces 19 are moved downward from the lower surface of a portion 12 b of the folded connection portion 12 between the folding line 12 ′ of the folded connection portion 12 and the first plate 11.
- the protruding portion is configured to contact 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 rotational force of the driver tool is first transmitted to the second plate 13, and then transmitted from the second plate 13 to the first plate 11.
- the upper and lower bent pieces 19 come into contact with the stopper piece 10 from the upper surface of the insulating substrate 2.
- the protrusion height H of the stopper 3 can be made lower than the case where the stopper piece 10 contacts the folded-back connecting portion 12, so that the stopper piece is moved in the rotational direction by the rotation of the motor 3. The strength against falling down can be reliably improved without making the stopper piece 10 wide.
- the thickness of the shaft portion 9 of the middle terminal electrode plate 4 is reduced by reducing the plate thickness. Then, by attaching a film 20 to cover the inside of the shaft portion 9, when soldering to a printed circuit board or the like by soldering, the flux at the time of soldering becomes inside the rotor 3. Make a configuration that prevents intrusion!
- 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 provided integrally.
- the stopper piece 10 can also hold the insulating substrate 2 between the contact piece 10 'integrally provided 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 cross-section having an outward U-shape.
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/597,025 US7675400B2 (en) | 2004-05-20 | 2005-04-13 | Chip type variable electronic part and chip type variable resistor |
| CN2005800017675A CN1906710B (zh) | 2004-05-20 | 2005-04-13 | 芯片型可变式电子部件和芯片型可变电阻器 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004150870A JP4149412B2 (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 |
| JP2004-150870 | 2004-05-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005114681A1 true WO2005114681A1 (ja) | 2005-12-01 |
Family
ID=35428605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/007153 Ceased WO2005114681A1 (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) | US7675400B2 (ja) |
| JP (1) | JP4149412B2 (ja) |
| KR (1) | KR20070029116A (ja) |
| CN (1) | CN1906710B (ja) |
| TW (1) | TW200606958A (ja) |
| WO (1) | WO2005114681A1 (ja) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03101502U (ja) * | 1990-02-02 | 1991-10-23 |
Family Cites Families (5)
| 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 |
-
2004
- 2004-05-20 JP JP2004150870A patent/JP4149412B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-13 KR KR1020067008982A patent/KR20070029116A/ko not_active Withdrawn
- 2005-04-13 CN CN2005800017675A patent/CN1906710B/zh not_active Expired - Fee Related
- 2005-04-13 WO PCT/JP2005/007153 patent/WO2005114681A1/ja not_active Ceased
- 2005-04-13 US US11/597,025 patent/US7675400B2/en not_active Expired - Fee Related
- 2005-05-03 TW TW094114259A patent/TW200606958A/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 |
|---|---|
| TW200606958A (en) | 2006-02-16 |
| US7675400B2 (en) | 2010-03-09 |
| US20090051480A1 (en) | 2009-02-26 |
| CN1906710A (zh) | 2007-01-31 |
| KR20070029116A (ko) | 2007-03-13 |
| JP4149412B2 (ja) | 2008-09-10 |
| JP2005333023A (ja) | 2005-12-02 |
| CN1906710B (zh) | 2010-05-12 |
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