WO2005114680A1 - 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
- WO2005114680A1 WO2005114680A1 PCT/JP2005/007152 JP2005007152W WO2005114680A1 WO 2005114680 A1 WO2005114680 A1 WO 2005114680A1 JP 2005007152 W JP2005007152 W JP 2005007152W WO 2005114680 A1 WO2005114680 A1 WO 2005114680A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- type variable
- insulating substrate
- rotor
- hole
- chip
- Prior art date
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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C10/00—Adjustable resistors
Definitions
- the present invention relates to, for example, a chip-type variable electronic component and a variable resistor in which a rotor for adjusting a resistance value or a capacitance of a capacitor is rotatably mounted.
- a chip-type variable resistor which is a representative of the variable electronic component, is well known in the art, for example, described in Patent Document 1.
- a resistive film is formed in an arc shape centered on the through hole on the upper surface of an insulating substrate having a chip type and having a through hole at the center thereof.
- External terminal electrodes are provided at both ends of the resistive film, and a middle terminal electrode plate made of a metal plate and integrally provided with a hollow shaft fitted into the through hole is provided on the lower surface of the insulating substrate.
- a middle terminal electrode plate made of a metal plate and integrally provided with a hollow shaft fitted into the through hole is provided on the lower surface of the insulating substrate.
- an adjusting rotor formed of a metal plate in a bowl shape and having a slider in contact with the resistive film is provided.
- the rotor is insulated by placing it so as to be fitted on the upper end of the shaft in close contact with the upper surface, and caulking the upper end of the shaft to spread outward on the upper surface of the bottom plate.
- the rotor is rotatably mounted on the substrate, and the rotor is If it accepts the driver tool to rotate, in the jar configuration, Ru.
- the rotor for adjusting the resistance receives the driver tool for rotating the rotor inside the rotor, so that the driver tool for the rotor is controlled.
- the receiving depth of the driver tool into the interior of the rotor must be increased.
- the rotor is fitted on the upper end of the shaft portion with the bottom plate of the rotor being in close contact with the upper surface of the insulating substrate, The upper end of the shaft is caulked so as to spread outward on the upper surface side of the bottom plate, so that the driver tool can be received inside the rotor.
- the depth increases, the height of the rotor from the upper surface of the insulating substrate increases, and the overall height of the chip-type variable resistor increases accordingly. There was a problem that the size of the variable resistor was increased.
- the thickness of the insulating substrate may be reduced, or a portion of the upper surface of the insulating substrate with which the bottom plate of the rotor contacts.
- Patent Document 1 JP-A-11-354307
- An object of the present invention is to provide a variable electronic component that solves these problems.
- a first aspect of the present invention is to provide an insulating substrate having a through hole and a metal disposed on the upper surface side of the insulating substrate so as to receive a driver tool therein.
- a rotor for adjustment configured in a bowl shape with a plate, a middle terminal electrode plate made of a metal plate closely contacting the lower surface of the insulating substrate, and a shaft integrally provided in the middle terminal electrode plate so as to fit into the through hole.
- the adjustment rotor is rotatably fitted to the upper end of the shaft portion on its bottom plate, and the upper end of the shaft portion is caulked so as to spread outward on the upper surface side of the bottom plate.
- a portion of the bottom plate of the adjusting rotor that is fitted to the shaft portion is opened in the upper surface of the insulating substrate through the through hole of the insulating substrate.
- Lower part than part It is characterized in location to Rukoto.
- a portion of the bottom plate of the adjusting rotor to be fitted to the shaft portion and an outwardly expanding force at the upper end of the shaft portion are attached. Both of the through hole and the inside of the through hole in the insulating substrate. It is characterized by being located in a portion lower than a portion opened on the upper surface of the edge substrate.
- a portion of the bottom plate of the rotor that is fitted to the shaft portion is brought into contact with the middle terminal electrode plate. It is characterized by
- the thickness of the terminal electrode plate in the shaft portion is partially reduced. Further, a film for closing the inside of the hollow shaft portion is attached to the lower surface of the thinned portion.
- the shaft portion of the terminal electrode plate is positioned in the through hole.
- a folded piece for closing the inside of the shaft portion is provided integrally with this portion.
- a friction plate is interposed between the bottom plate of the rotor and the terminal electrode plate.
- 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 for both ends of the resistive film, and a slider that slidably contacts the resistive film on the adjusting rotor.
- a portion of the bottom plate of the adjusting rotor that is fitted to the shaft portion is replaced with a through hole of the inside of the through hole of the insulating substrate.
- the outwardly expanding force-clamping portion at the upper end of the shaft portion allows the portion of the bottom plate to be fitted to the shaft portion to be different from the conventional one. It is located at a position lower in the height direction than in the case where the insulating substrate is in close contact with the upper surface.
- the receiving depth when the driver tool for rotating the rotor is received in the rotor is increased by the outwardly expanding force-clamping portion at the upper end of the shaft portion to a lower portion in the height direction.
- the upper surface force of the insulating substrate in the rotor by the position Since the height can be increased without increasing the height, the overall height of the chip-type variable electronic component is adjusted under the condition that the receiving depth of the driver tool into the rotor is increased.
- the strength of the insulating substrate is not reduced by reducing the thickness of the insulating substrate.
- both the portion of the bottom plate of the adjusting rotor to be fitted to the shaft portion and the outwardly spreading force tightening portion at the upper end of the shaft portion are formed by: Since the through hole is located at a portion lower than the portion opened on the upper surface of the insulating substrate in the inside of the through hole in the insulating substrate, the receiving depth when the driver tool is received in the rotor is reduced. Since the depth can be made deeper than in the case of the second aspect, the above effect can be promoted.
- the portion of the bottom plate of the rotor that is fitted to the shaft portion is brought into contact with the middle terminal electrode plate so that the upper end of the shaft portion faces outward.
- the rotor is rotated by inserting a friction plate between the bottom plate of the rotor and the middle terminal electrode plate.
- the chip-type variable resistor can be configured to have the above-described effects.
- FIG. 1 is a plan view of a chip-type variable resistor according to a first embodiment of the present invention.
- FIG. 2 is a sectional view taken along the line II-II of FIG. 1.
- FIG. 3 is an exploded view of FIG. 2.
- FIG. 4 is a plan view when a rotor is rotated.
- FIG. 5 is a vertical sectional front view of the chip-type variable resistor according to the second embodiment.
- ⁇ 6 ⁇ is a vertical sectional front view of the chip-type variable resistor according to the third embodiment.
- FIG. 7 is a plan view of a chip-type variable resistor according to a fourth embodiment.
- FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. 7.
- FIGS. 1 to 4 show a chip type variable resistor 1 according to the first embodiment.
- the chip-type variable resistor 1 is composed of a chip-shaped insulating substrate 2 made of a heat-resistant insulating material such as ceramic, an adjusting rotor 3 provided on the upper surface of the insulating substrate 2, 2 and a middle terminal electrode plate 4 disposed on the lower surface of the second electrode 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.
- 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 relatively small diameter inserted into the through hole 5 at the portion of the through hole 5.
- a hollow shaft portion 9 is provided in a body, and a stopper piece 10 which is bent upward is provided in a portion of the other side surface 2b of the insulating substrate 2 in a body.
- 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.
- a flat plate-shaped second plate 13 is formed.
- the second plate 13 is provided with a cross-shaped driver engaging hole 14, and overlaps the upper surface of the first plate 10 from the folded connection portion 12.
- a slit hole 15 is formed in the outer peripheral flange of the first plate 10 so as to extend in a substantially semicircular shape at a portion opposite to the folded connection portion 12.
- the portion outside the slit hole 15 is formed as a slider 16 that elastically contacts the resistance film 5.
- a bottom portion 17 that fits into the through hole 5 is provided in the bowl-shaped first plate 11 of the rotor 3, and a bottom plate 18 at the bottom portion 17 is formed inside the through hole 5 in the insulating substrate 2.
- the through-hole 5 is configured to be located at a lower portion by an appropriate dimension G than a portion opened on the upper surface of the insulating substrate 2. Then, the upper end of the shaft portion 9 is inserted into a mounting hole 19 formed in the bottom plate 18, and a portion of the motor 3, which is outer than the bottom portion 17, is in close contact with the upper surface of the insulating substrate 2.
- the slider 16 is brought into a state of elastic contact with the resistance film 5, and in this state, the upper end of the shaft portion 9 is swaged outwardly on the upper surface side of the bottom plate 18.
- the rotor 3 is mounted on the insulating substrate 2 so as to freely rotate about the shaft 9 as a center axis, the rotor 3 is mounted on the insulating substrate 2 by a force! And then.
- the rotor 3 is rotated by contacting a portion of the outer periphery of the bottom 17 with the upper surface of the insulating substrate 2 directly or via a friction plate interposed therebetween. It is configured so as to have a predetermined rotation resistance for the operation.
- the thickness of the portion of the shaft portion 9 is partially thinned, and the lower surface of this portion is covered with the hollow shaft portion 9 to close the inside thereof.
- the film 21 By adhering the film 21, it is possible to prevent flux and the like from entering the inside of the rotor 3 from the hollow shaft 9 when soldering the chip-type variable resistor 1 to a printed circuit board or the like.
- the structure is such that the protrusion is reliably prevented in a state where the protruding height from the lower surface of the insulating substrate 2 is not increased.
- the chip-type variable resistor 1 having the above-described configuration is provided with the bottom portion 17 that fits into the through-hole 5 in the bowl-shaped first plate 11 of the rotor 3.
- the bottom plate 18 at the bottom part 17 is positioned at a portion which is appropriately smaller by G than the portion of the inside of the through hole 5 in the insulating substrate 2 where the through hole 5 is opened on the upper surface of the insulating substrate 2,
- the upper end of the shaft portion 9 fitted in the through hole 5 is crimped so as to spread outward on the upper surface side of the bottom plate 18, so that the force at the upper end of the shaft portion 9 outwardly expands.
- the fastening portion 20 is located at a position which is lower in the height direction than when the portion of the bottom plate 18 fitted to the shaft portion 9 is in close contact with the upper surface of the insulating substrate 2 as in the related art. .
- the height of the upper surface force H of the insulating substrate 2 in the rotor 3 can be increased without increasing the height H of the upper surface of the insulating substrate 2 by the lower portion in the vertical direction, so that the overall height of the chip-type variable resistor 1 is increased.
- the dimension HO should be ensured under the condition that the receiving depth of the driver tool into the rotor 3 is increased and the strength of the insulating substrate 2 is not reduced by reducing the thickness of the insulating substrate 2. Can be lowered.
- the insulating substrate of the stopper piece 10 with which the folded connection portion 12 of the rotor 3 contacts is provided. Since the projecting height dimension of the upper surface force can be reduced, the falling strength against the falling of the stopper piece 10 due to the contact of the connecting portion 12 can be improved.
- FIG. 5 shows a chip-type variable resistor according to the second embodiment.
- a bottom portion 17 that fits into the through-hole 5 is provided on the bowl-shaped first plate 11 of the rotor 3, and the bottom plate 18 at the bottom portion 17 is In configuring the through hole 5 in the insulating substrate 2 so that the through hole 5 is located at a portion which is appropriately smaller by G than the portion opening on the upper surface of the insulating substrate 2, the bottom portion 17 is cut off. Instead of contacting the edge substrate 2, only the bottom plate 18 should be in contact with the upper surface of the middle terminal electrode plate 4, and the upper end of the shaft 9 should be spread outward on the upper surface side of the bottom plate 18. It is a configuration that clings.
- the outwardly expanding force-clamping portion 20 at the upper end of the shaft portion 9 forms a portion of the bottom plate 18 that fits on the shaft portion 9 as in the conventional case. Since it is located at a position lower in the height direction than when it is close to the upper surface, the receiving depth W when receiving a driver tool for rotating the rotor into the rotor 3 is determined by the upper end of the shaft 9.
- the height dimension H of the upper surface force of the insulating substrate 2 in the rotor 3 is increased without increasing the height of the upper surface force of the insulating substrate 2 in the rotor 3 by an amount corresponding to the position of the outwardly extending force-clamping portion 20 at the lower position in the height direction. Can be.
- the rotor 3 comes into contact with the insulating substrate 2.
- the middle terminal electrode plate 4 since only the bottom plate 18 is in contact with the middle terminal electrode plate 4, when the upper end of the shaft portion 9 is crimped so as to spread outward, the impact of the crimping on the insulating substrate 2 is reduced. Spreading can be reduced.
- a predetermined rotational resistance is applied to the rotation of the rotor 3 by contact of the bottom plate 18 with the middle terminal electrode plate 4.
- a friction plate 24 may be interposed between the bottom plate 18 and the middle terminal electrode plate 4 so as to have the following configuration.
- a folded piece 22 for closing the inside of the hollow shaft 9 is provided integrally with the hollow shaft 9 of the plate 4 so that the chip type variable resistor can be soldered to a printed circuit board or the like.
- flux or the like is reliably prevented from entering the interior of the rotor 3 from the hollow shaft portion 9 without increasing the protruding height from the lower surface of the insulating substrate 2. It is configured to
- reference numeral 23 denotes a synthetic resin material applied around the folded piece 22 in order to more reliably prevent the penetration of flux or the like.
- FIG. 6 shows a chip-type variable resistor according to the third embodiment.
- the film 21 is adhered as in the above-described embodiments, or Instead of having a structure in which the folded piece 22 is provided, a hollow shaft part ⁇ integrally provided with the middle terminal electrode plate 4 is formed in a shape in which the upper end thereof is closed. Thus, intrusion of flux and the like can be more reliably prevented.
- a stopper piece 10 provided integrally with the middle terminal electrode plate 4 to restrict the rotor 3 to a predetermined rotation angle ⁇ is attached to the insulating substrate 2.
- the falling strength of the stopper piece 10 can be improved.
- the fixing strength of the middle terminal electrode plate 4 to the insulating substrate 2 is improved, but the rotor 3 is restricted to a predetermined rotation angle 0.
- the stopper piece provided integrally with the middle terminal electrode plate 4 is not limited to the above-described configuration, and the cross-section may have an outward U-shape as in the fourth embodiment shown in FIGS.
- the stopper may be configured as a single stopper 10.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Adjustable Resistors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/597,022 US7633372B2 (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 |
---|---|---|---|
JP2004-150869 | 2004-05-20 | ||
JP2004150869A JP4695346B2 (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 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005114680A1 true WO2005114680A1 (ja) | 2005-12-01 |
Family
ID=35428604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/007152 WO2005114680A1 (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) | US7633372B2 (ja) |
JP (1) | JP4695346B2 (ja) |
KR (1) | KR20070039470A (ja) |
CN (1) | CN1906712A (ja) |
TW (1) | TW200605100A (ja) |
WO (1) | WO2005114680A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWM382505U (en) * | 2010-01-15 | 2010-06-11 | Cheng Uei Prec Ind Co Ltd | Video device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63124705U (ja) * | 1987-02-09 | 1988-08-15 | ||
JPH02101709A (ja) * | 1988-10-07 | 1990-04-13 | Murata Mfg Co Ltd | 可変低抗器 |
JPH07147206A (ja) * | 1993-11-24 | 1995-06-06 | Alps Electric Co Ltd | 回転形可変抵抗器 |
JP2001076910A (ja) * | 1999-09-09 | 2001-03-23 | Alps Electric Co Ltd | チップ型可変抵抗器 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0536245Y2 (ja) * | 1986-04-21 | 1993-09-14 | ||
JPS63124705A (ja) | 1986-11-13 | 1988-05-28 | Mitsubishi Electric Corp | 電気車制御装置 |
JP3355272B2 (ja) * | 1996-02-15 | 2002-12-09 | アルプス電気株式会社 | 回転形可変抵抗器 |
JP3218968B2 (ja) * | 1996-03-26 | 2001-10-15 | 松下電器産業株式会社 | 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 |
JP3489492B2 (ja) * | 1999-06-30 | 2004-01-19 | 株式会社村田製作所 | 可変抵抗器 |
JP2002050505A (ja) * | 2000-07-31 | 2002-02-15 | Kyocera Corp | 可変抵抗器 |
-
2004
- 2004-05-20 JP JP2004150869A patent/JP4695346B2/ja not_active Expired - Fee Related
-
2005
- 2005-04-13 US US11/597,022 patent/US7633372B2/en not_active Expired - Fee Related
- 2005-04-13 KR KR1020067008981A patent/KR20070039470A/ko not_active Application Discontinuation
- 2005-04-13 CN CNA2005800018235A patent/CN1906712A/zh active Pending
- 2005-04-13 WO PCT/JP2005/007152 patent/WO2005114680A1/ja active Application Filing
- 2005-04-21 TW TW094112782A patent/TW200605100A/zh unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63124705U (ja) * | 1987-02-09 | 1988-08-15 | ||
JPH02101709A (ja) * | 1988-10-07 | 1990-04-13 | Murata Mfg Co Ltd | 可変低抗器 |
JPH07147206A (ja) * | 1993-11-24 | 1995-06-06 | Alps Electric Co Ltd | 回転形可変抵抗器 |
JP2001076910A (ja) * | 1999-09-09 | 2001-03-23 | Alps Electric Co Ltd | チップ型可変抵抗器 |
Also Published As
Publication number | Publication date |
---|---|
US20070229211A1 (en) | 2007-10-04 |
JP4695346B2 (ja) | 2011-06-08 |
TW200605100A (en) | 2006-02-01 |
JP2005333022A (ja) | 2005-12-02 |
CN1906712A (zh) | 2007-01-31 |
US7633372B2 (en) | 2009-12-15 |
KR20070039470A (ko) | 2007-04-12 |
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