JPH023616Y2 - - Google Patents
Info
- Publication number
- JPH023616Y2 JPH023616Y2 JP18206783U JP18206783U JPH023616Y2 JP H023616 Y2 JPH023616 Y2 JP H023616Y2 JP 18206783 U JP18206783 U JP 18206783U JP 18206783 U JP18206783 U JP 18206783U JP H023616 Y2 JPH023616 Y2 JP H023616Y2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- rotor
- ceramic
- stator
- stator electrode
- 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.)
- Expired
Links
- 239000000919 ceramic Substances 0.000 claims description 24
- 239000003990 capacitor Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【考案の詳細な説明】
〔考案の対象〕
本考案はセラミツクを誘電体としたセラミツク
バリコンに関する。[Detailed Description of the Invention] [Object of the Invention] The present invention relates to a ceramic variable capacitor using ceramic as a dielectric material.
従来のセラミツクバリコンの構造は、軸の回転
角に対する容量値を補正する容量調整手段がな
く、規定の容量値を得る方法として部品精度をミ
クロオーダーにするとか、部品の寸法を選別して
使用する等の策が講じられていたため、部品価格
が高く、生産性を阻害するなど、結果的にセラミ
ツクバリコンの価格は高いものになつていた。そ
のため、セラミツクバリコンはプラスチツクフイ
ルムを誘電体に用いるバリコンに比べハウリン
グ、静電ノイズが発生しない等の長所があるにも
かかわらず、近年殆んど生産されていない状況に
ある。
The structure of conventional ceramic variable capacitors does not have a capacitance adjustment means to correct the capacitance value depending on the rotation angle of the shaft, and the method to obtain the specified capacitance value is to make the precision of the parts micro-order or to select the dimensions of the parts. As a result, the price of ceramic variable capacitors became high as a result of such measures being taken, such as high component prices and hindering productivity. Therefore, although ceramic variable capacitors have advantages such as not generating howling or electrostatic noise compared to variable capacitors using plastic film as a dielectric material, they have hardly been produced in recent years.
本考案の目的は、容量調整を容易に実施出来る
構造とし、部品精度を必要とせず、歩留りを向上
させ得て安価なセラミツクバリコンを提供せんと
するものである。
The object of the present invention is to provide an inexpensive ceramic variable capacitor that has a structure that allows for easy capacity adjustment, does not require precision parts, can improve yields, and is inexpensive.
第１図〜第５図は本考案の一実施例であり、第
１図はセラミツクバリコン本体の側断面図、第２
図はセラミツク誘電体に円形の凹部を設けた状態
を示す拡大した要部断面図、第３図は円形の凹部
の縁部全周を切除した状態を示す拡大した要部断
面図、第４図はロータの平面図、第５図はセラミ
ツク誘電体の平面図である。
Figures 1 to 5 show one embodiment of the present invention; Figure 1 is a side sectional view of the ceramic variable condenser body;
The figure is an enlarged cross-sectional view of the main part showing a state in which a circular recess is provided in the ceramic dielectric, FIG. 5 is a plan view of the rotor, and FIG. 5 is a plan view of the ceramic dielectric.
第１図において１は黄銅等の金属棒からなる回
転軸、２は亜鉛ダイカストや焼結金属等からなる
ロータ、３は該ロータ２に設けられたロータ電
極、４は酸化チタン等からなるセラミツク誘電体
で、第５図に示すように中心線OA上で、半径r1，
r2上に一対の円形の凹部５を設け、中心線OAか
ら左右α度の角度を以つて半径r1，r2上にもう一
対の円形凹部５を設く。また中心線OAから左右
にβ度の角度を以つて半径r3，r4上にも一対の円
形の凹部５を設けている。そして前記円形の凹部
５…上には銀ペーストを印刷、焼成した３ケ月状
のステータ電極６が形成されている。第１図に示
す７は該ステータ電極６に電気的に接続される金
属薄板よりなるステータ端子、８はシリコンゴム
等の弾性を有する環状の弾性体、９は成形樹脂等
の絶縁体からなる後側フレームで、外形は略四角
柱で、円形の凹部底面９ａには、アース端子１０
が載置されている。また凹部底面９ａには第５図
２点鎖線で示す如く一対の凹部５に対向して５ケ
の調整穴１１…が穿設されている。１２は成形樹
脂等の絶縁体からなる前側フレームで、中央に前
記回転軸１を挿通する穴１３が設けられている。 In Fig. 1, 1 is a rotating shaft made of a metal rod such as brass, 2 is a rotor made of zinc die-casting or sintered metal, 3 is a rotor electrode provided on the rotor 2, and 4 is a ceramic dielectric made of titanium oxide or the like. As shown in Fig. 5, on the center line OA, the radius r 1 ,
A pair of circular recesses 5 are provided on r 2 , and another pair of circular recesses 5 are provided on radii r 1 and r 2 at angles of α degrees left and right from the center line OA. A pair of circular recesses 5 are also provided on radii r 3 and r 4 at angles of β degrees to the left and right from the center line OA. A three-moon shaped stator electrode 6 is formed on the circular recess 5 by printing and firing silver paste. In FIG. 1, 7 is a stator terminal made of a thin metal plate that is electrically connected to the stator electrode 6, 8 is an annular elastic body having elasticity such as silicone rubber, and 9 is a terminal made of an insulating material such as molded resin. The side frame has a substantially rectangular prism outer shape, and has a ground terminal 10 on the bottom surface 9a of the circular recess.
is placed. Further, five adjustment holes 11 are bored in the bottom surface 9a of the recess, facing the pair of recesses 5, as shown by two-dot chain lines in FIG. Reference numeral 12 denotes a front frame made of an insulator such as molded resin, and a hole 13 through which the rotating shaft 1 is inserted is provided in the center.
次に組立方法を説明すると、後側フレーム９の
円形の凹部底面９ａにアース端子１０、環状の弾
性体８、ステータ端子７、ステータ電極６を下向
きにしたセラミツク誘電体４を順次載置する。ロ
ータ２は回転軸１に強嵌合等の方法により結合
し、回転軸１の先端を、前記後側フレーム９に載
置したセラミツク誘電体４を貫通して前記アース
端子１０に当接せしめ、その後回転軸１の頂部に
前側フレーム１２を挿入し、前側フレーム１２と
後側フレーム９とを超音波溶着等の方法で組合さ
せ組立てを終る。 Next, the assembly method will be described. The earth terminal 10, the annular elastic body 8, the stator terminal 7, and the ceramic dielectric body 4 with the stator electrode 6 facing downward are placed in order on the bottom surface 9a of the circular recess of the rear frame 9. The rotor 2 is coupled to the rotating shaft 1 by a method such as strong fitting, and the tip of the rotating shaft 1 penetrates the ceramic dielectric 4 placed on the rear frame 9 and abuts the ground terminal 10, Thereafter, the front frame 12 is inserted into the top of the rotating shaft 1, and the front frame 12 and the rear frame 9 are assembled by ultrasonic welding or the like to complete the assembly.
前述の如き工程にて組立てられたセラミツクバ
リコンは、回転軸１を回転することにより、回転
軸１に結合されたロータ電極３が回転し、ステー
タ電極６との対向面積が変化し、容量を可変させ
る構造となつており、ステータ電極６とステータ
端子７とは圧接により電気的導通を得てステータ
電極６はステータ端子７を介して回路部品に接続
される。一方ロータ電極３は回転軸１を介してア
ース端子１０と電気的に導通され、回路部品に接
続され、バリコンとしての機能を果す。 In the ceramic variable capacitor assembled in the process described above, by rotating the rotating shaft 1, the rotor electrode 3 connected to the rotating shaft 1 rotates, and the area facing the stator electrode 6 changes, thereby changing the capacitance. The stator electrode 6 and the stator terminal 7 are electrically connected by pressure contact, and the stator electrode 6 is connected to the circuit component via the stator terminal 7. On the other hand, the rotor electrode 3 is electrically connected to the ground terminal 10 via the rotating shaft 1, connected to circuit components, and functions as a variable capacitor.
そしてバリコンには回転軸１の回転角度に対す
る容量値を補正する容量調整手段が必要である
が、その調整は、セラミツク誘電体４に設けられ
た円形の凹部５とその周辺のステータ電極にて行
われる。 The variable capacitor requires a capacitance adjustment means for correcting the capacitance value with respect to the rotation angle of the rotating shaft 1, but this adjustment is performed using the circular recess 5 provided in the ceramic dielectric 4 and the stator electrodes around it. be exposed.
次に凹部５による調整方法を説明すると、回転
軸１の回転角度に応じて適宜選択された後側フレ
ーム９の調整穴１１から、円錐状で先端が平坦な
ダイヤモンド砥石等で作製された治具を対応する
凹部５にさしこみ、治具を回転させ、前記セラミ
ツク誘電体４の凹部５に圧接させ、第３図に示す
如く凹部５の縁部５ａ全周を切除し、凹部５の底
部のステータ電極の部分６ｂと主ステータ電極６
を切離して、前記ステータ電極の部分６ｂを捨て
電極とし、容量値を減少せしめて容量調整を行う
ことが出来る。 Next, to explain the adjustment method using the recess 5, a jig made of a conical and flat-tipped diamond grindstone or the like is inserted into the adjustment hole 11 of the rear frame 9, which is appropriately selected according to the rotation angle of the rotating shaft 1. is inserted into the corresponding recess 5, the jig is rotated, the jig is pressed against the recess 5 of the ceramic dielectric 4, the entire circumference of the edge 5a of the recess 5 is cut off as shown in FIG. Electrode portion 6b and main stator electrode 6
The capacitance can be adjusted by cutting off the stator electrode portion 6b and using it as a discarded electrode to reduce the capacitance value.
なお、前述の実施例では、ステータ電極６に円
形の凹部５を形成したが、これに代り、第６図に
示す如く円形の凸部１４を設け、該凸部１４の縁
部１４ａの全周を切除してステータ電極の部分６
ｃを捨て電極としても良い。また、上記実施例で
は凹部５を５ケ設けたが、この数に限定されるも
のではなく、また凹部５も円形に限るものでもな
い。また凹部５を連設して円弧状の溝にしても良
い。 In the above embodiment, the circular recess 5 was formed in the stator electrode 6, but instead, a circular convex part 14 is provided as shown in FIG. 6, and the entire circumference of the edge 14a of the convex part 14 Cut out the stator electrode part 6
c may be discarded and used as an electrode. Further, although five recesses 5 are provided in the above embodiment, the number is not limited to this number, nor is the recess 5 limited to a circular shape. Alternatively, the recesses 5 may be arranged in series to form an arcuate groove.
本考案によれば、ステータ電極に凹部及び凸部
の少くとも一方を形成し、該部分の縁部全周を治
具にて切除してステータ電極の部分を捨て電極と
し、ロータ電極との対向面積を減らして容量を減
少せしめることにより、容量調整機能をもたせた
ので、容量調整機能をもたなかつた従来のセラミ
ツクバリコンに比し部品精度も要求されず、歩留
りが向上し、自づと製品単価の低減を計ることが
出来るという効果を有する。
According to the present invention, at least one of a concave portion and a convex portion is formed on the stator electrode, the entire circumference of the edge of the portion is cut off with a jig, the stator electrode portion is used as an electrode, and the portion facing the rotor electrode is By reducing the area and capacitance, we have provided a capacitance adjustment function, so compared to conventional ceramic variable capacitors that do not have a capacitance adjustment function, component precision is not required, improving yields and improving product quality. This has the effect of reducing unit costs.
第１図〜第５図は本考案の一実施例を示し、第
１図はセラミツクバリコン本体の側断面図、第２
図はセラミツク誘電体に円形の凹部を設けた状態
を示す拡大した断面図、第３図はセラミツク誘電
体の円形の縁部全周を切除した状態を示す拡大し
た断面図、第４図はロータの平面図、第５図は誘
電体の平面図、第６図は本考案の他の実施例を示
し、セラミツク誘電体に円形の凸部を設けた状態
を示す拡大した断面図である。
１……回転軸、２……ロータ、３……ロータ電
極、４……セラミツク誘電体、５……凹部、５ａ
……縁部、６……ステータ電極、６ｂ，６ｃ……
ステータ電極の部分、７……ステータ端子、８…
…弾性体、９……後側フレーム、９ａ……凹部底
面、１０……アース端子、１１……調整穴、１２
……前側フレーム、１３……穴、１４……凸部、
１４ａ……縁部。
Figures 1 to 5 show one embodiment of the present invention, with Figure 1 being a side sectional view of the ceramic variable condenser body, and Figure 2 being
The figure is an enlarged sectional view showing a state in which a circular recess is provided in the ceramic dielectric, FIG. FIG. 5 is a plan view of the dielectric, and FIG. 6 is an enlarged sectional view showing another embodiment of the present invention in which a circular convex portion is provided on the ceramic dielectric. DESCRIPTION OF SYMBOLS 1... Rotating shaft, 2... Rotor, 3... Rotor electrode, 4... Ceramic dielectric, 5... Recessed part, 5a
...Edge, 6...Stator electrode, 6b, 6c...
Stator electrode part, 7... Stator terminal, 8...
...Elastic body, 9 ... Rear frame, 9a ... Bottom of recess, 10 ... Earth terminal, 11 ... Adjustment hole, 12
...Front frame, 13...hole, 14...convex part,
14a...Edge.
Claims (1)
け、前記セラミツク誘電体を介してロータのロー
タ電極と対向させ、ロータの回転によりロータ電
極とステータ電極との対向面積を変化させて容量
を可変させるセラミツクバリコンにおいて、ステ
ータ電極に凹部及び凸部の少くとも一方を形成
し、該ステータ電極に対向する後側フレームに、
前記凹部及び凸部の縁部全周を切除する治具が挿
入可能な穴を形成したことを特徴とするセラミツ
クバリコン。 A ceramic variable capacitor in which a sluter electrode is provided on one side of a ceramic dielectric and is opposed to a rotor electrode of a rotor through the ceramic dielectric, and the capacitance is varied by changing the facing area of the rotor electrode and the stator electrode as the rotor rotates. , forming at least one of a concave portion and a convex portion on the stator electrode, and a rear frame facing the stator electrode,
A ceramic variable capacitor characterized in that a hole is formed into which a jig for cutting the entire circumference of the edges of the concave portion and the convex portion can be inserted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18206783U JPS6090825U (en) | 1983-11-28 | 1983-11-28 | Ceramic variable capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18206783U JPS6090825U (en) | 1983-11-28 | 1983-11-28 | Ceramic variable capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6090825U JPS6090825U (en) | 1985-06-21 |
| JPH023616Y2 true JPH023616Y2 (en) | 1990-01-29 |
Family
ID=30394381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18206783U Granted JPS6090825U (en) | 1983-11-28 | 1983-11-28 | Ceramic variable capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6090825U (en) |
-
1983
- 1983-11-28 JP JP18206783U patent/JPS6090825U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6090825U (en) | 1985-06-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1367839A (en) | Rotatable element potentiometer and method of producing it | |
| JPH023616Y2 (en) | ||
| JPH023618Y2 (en) | ||
| US3656033A (en) | Assembly comprising an adjustable capacitor and a printed circuit | |
| JPH0220819Y2 (en) | ||
| US4353106A (en) | Trimmer capacitor | |
| JPH0236047B2 (en) | ||
| JPH023619Y2 (en) | ||
| JPS605562Y2 (en) | variable capacitor | |
| JPH0153357B2 (en) | ||
| KR840002856Y1 (en) | Ceramic trimmer condenser | |
| JPH0757849A (en) | Manufacture of spark plug for internal combustion engine | |
| JPS6342520Y2 (en) | ||
| JPS6345041Y2 (en) | ||
| JP2590451B2 (en) | Variable capacitor | |
| JPS5824427Y2 (en) | variable capacitor | |
| JPS5934989Y2 (en) | variable ceramic capacitor | |
| KR920008667Y1 (en) | Ceramic capacitor | |
| JPS6342519Y2 (en) | ||
| JPS6342518Y2 (en) | ||
| JPS5944034U (en) | thin trimmer capacitor | |
| JPS635223Y2 (en) | ||
| JPS6311708Y2 (en) | ||
| JPS6035233Y2 (en) | variable ceramic capacitor | |
| JPS6320106Y2 (en) |