JPS6016086B2 - variable resistor - Google Patents

Description

【発明の詳細な説明】 本発明は可変抵抗器に関するもので、抵抗体基板に摺動
子等の内部機構を保護するように取付けられる絶縁性キ
ャップの固定時、略Ｕ字形の座金を使用することにより
、裏面からも容易にドライバー等による調整が行えるよ
うにしたものである。[Detailed Description of the Invention] The present invention relates to a variable resistor, in which a substantially U-shaped washer is used when fixing an insulating cap that is attached to a resistor board to protect internal mechanisms such as sliders. This allows adjustments to be easily made from the back using a screwdriver or the like.

以下本発明をその一実施例を示す添付図面を用いて説明
する。The present invention will be described below with reference to the accompanying drawings showing one embodiment thereof.

第１図において、１は抵抗体基板で、セラミック板等の
絶縁性基板の一面に略半円状に抵抗体２を形成し、かっ
この抵抗体２の両端に連続して綾織子部３，３を設ける
とともに、中央に貫通孔４を形成し、さらに前記銀端子
部３，３のほぼ中央部に端子取付孔５，５を設けるとと
もに、前記銀端子部３，３の間に位置するように端縁に
切欠部６を設けてなる。７，７は外端子で前記抵抗体基
板１の下方より一端が前記端子取付孔５，５に挿入され
、かしめられることにより機械的に固定され、また半田
付けあるいは導電性接着剤にて銀端子部３，３と電気的
に接続される。In FIG. 1, reference numeral 1 denotes a resistor substrate, and a resistor 2 is formed in a substantially semicircular shape on one surface of an insulating substrate such as a ceramic plate, and twill weave portions 3, 3, a through hole 4 is formed in the center, and a terminal mounting hole 5, 5 is provided approximately in the center of the silver terminal parts 3, 3, and a terminal mounting hole 5, 5 is provided so as to be located between the silver terminal parts 3, 3. A notch 6 is provided on the edge. Reference numerals 7 and 7 designate external terminals, one end of which is inserted into the terminal mounting holes 5, 5 from below the resistor board 1 and fixed mechanically by caulking, and silver terminals are connected by soldering or conductive adhesive. It is electrically connected to parts 3, 3.

８は中端子板で、上方向に中空はとめ部９およびストッ
パー片１０を一体に突出し、下方向に取付脚１１を一体
に突談している。Reference numeral 8 designates an intermediate terminal plate from which a hollow eyelet portion 9 and a stopper piece 10 are integrally projected upward, and a mounting leg 11 is integrally protruded downward.

前記中空はとめ部９は前記抵抗体基板１の孔４を貫通す
るように形成されている。１２は座板で、中央に前記中
空はとめ部９が貫通する孔１３を有してなり、その厚み
ｔは後述する沼動子と抵抗体２との電気的特性を確保す
るための適度な値に設計されている。The hollow eyelet portion 9 is formed to penetrate through the hole 4 of the resistor substrate 1. Reference numeral 12 denotes a seat plate, which has a hole 13 in the center through which the hollow eyelet 9 passes, and its thickness t is set to an appropriate value in order to ensure the electrical characteristics of the swamp element and the resistor 2, which will be described later. Designed for value.

１４は摺動子で完成状鷺蝿こおいて先端が抵抗体２に圧
接するアーム部１５を備え、かつほぼ中央に前記中空は
とめ部９が貫通する孔１６を有する。Reference numeral 14 denotes a slider having an arm portion 15 whose tip is brought into pressure contact with the resistor 2 in the completed state, and has a hole 16 substantially in the center through which the hollow eyelet portion 9 passes.

また、１７はプラスチックよりなるキャップで、中央部
に円柱状の突出部１８を一体に有し、また外周には調整
用ドライバー（図示せず）が差込まれる溝１９と抵抗体
２、座板１２、摺動子１４等の内部機構を保護するため
の保護壁２０を有し、また第２図に示すように内部には
中端子板８のストッパ一片１０と係合して摺動子１４の
回転角度を規制する一対のストッパー２１，２１と摺動
子１４をこのキャップ１７に連動して回転させるための
回転用突起２２を一体に有してなる。２３が本発明の特
徴とする座金で、略Ｕ字状に加工され、その中ｂは円柱
状突出部１８の先端の中ａとほぼ同一に設定している。Reference numeral 17 denotes a cap made of plastic, which integrally has a cylindrical protrusion 18 in the center, and a groove 19 on the outer periphery into which an adjustment screwdriver (not shown) is inserted, a resistor 2, and a seat plate. 12, has a protective wall 20 for protecting the internal mechanism such as the slider 14, and as shown in FIG. It integrally includes a pair of stoppers 21, 21 for regulating the rotation angle of the cap 17, and a rotation protrusion 22 for rotating the slider 14 in conjunction with the cap 17. Reference numeral 23 denotes a washer which is a feature of the present invention, and is machined into a substantially U-shape, the inside b of which is set to be almost the same as the inside a of the tip of the cylindrical protrusion 18 .

ここで、前記円柱状突出部１８は先端の両サイドを直線
状に切除することにより、正面からみて略だ円状に加工
している。また、前記座金２３は中央壁に前記キャップ
１７の円柱状突出部１８の先端が鉄合する孔２４を有し
、かつ両側壁の中央壁に近接した位置に、その間隔が円
柱状突出部１８の先端の中ａより小さくなるように保持
片２６，２５を切起し１こより設けている。ここで、座
金２３の両側壁は、該座金２３内にドライバーの先端が
差し込まれてその調整が可能なごとく高さを設定する。
その組立は、まず中端子板８の中空はとめ部９を、外端
子７，７を固定した抵抗体基板１の孔４に挿入し、かつ
ストッパー片１０の切欠部６に鉄合させるとともにさら
にこの抵抗体基板１上に突出した中空はとめ部９に座板
１２、摺動子１４を順次はめ込むことにより、これら部
品を抵抗体基板１上に積み上げ、摺動子１４の上面に突
出した中空はとめ部９の先端をかしめることにより、前
記抵抗体基板１、中端子板８、座板１２および摺鰯子１
４を一体化する。Here, the cylindrical protrusion 18 is processed into a substantially elliptical shape when viewed from the front by cutting both sides of the tip into a straight line. Further, the washer 23 has a hole 24 in the center wall thereof, into which the tip of the cylindrical projection 18 of the cap 17 is fitted, and the space between the cylindrical projections 18 is located close to the center wall of both side walls. The holding pieces 26 and 25 are cut and raised so that they are smaller than the middle a of the tip of the holding pieces 26 and 25. Here, the height of both side walls of the washer 23 is set so that the tip of a screwdriver can be inserted into the washer 23 and adjusted.
To assemble it, first insert the hollow eyelet 9 of the inner terminal plate 8 into the hole 4 of the resistor board 1 to which the outer terminals 7, 7 are fixed, and iron it into the notch 6 of the stopper piece 10. By sequentially fitting the seat plate 12 and the slider 14 into the hollow eyelet 9 protruding on the resistor board 1, these parts are stacked on the resistor board 1, and the hollow eyelet protruding on the upper surface of the slider 14 By caulking the tips of the eyelets 9, the resistor substrate 1, the intermediate terminal plate 8, the seat plate 12 and the sardine 1
Integrate 4.

このとき、摺動子１４は回転可能に支持され、かつアー
ム部１５の先端が抵抗体２上に圧接する。さらに、キャ
ップ１７の円柱状突出部１８を、該キャップ１７にて摺
動子１４、座板１２、抵抗体２および銀端子部３，３を
覆うように中端子板８の中空はとめ部９内に挿入し、中
端子板８より突出した中空はとめ部９の先端に第４図，
第５図に示すように座金２３を圧入して一体化する。At this time, the slider 14 is rotatably supported, and the tip of the arm portion 15 is pressed against the resistor 2 . Furthermore, the cylindrical protrusion 18 of the cap 17 is attached to the hollow eyelet 9 of the middle terminal plate 8 so that the cap 17 covers the slider 14, the seat plate 12, the resistor 2, and the silver terminal parts 3, 3. 4, at the tip of the hollow eyelet 9 that protrudes from the inner terminal plate 8.
As shown in FIG. 5, the washer 23 is press-fitted and integrated.

この状態でキャップ１７を回転させることにより、摺動
子１４が抵抗体８上を圧接しつつ回転し、また座金２３
もキャップ１７と一体化されていることより回転し、キ
ャップ１７の抜けをも防止する。以上のように本発明に
よる可変抵抗器は構成されている。By rotating the cap 17 in this state, the slider 14 rotates while being in pressure contact with the resistor 8, and the washer 23
Since it is integrated with the cap 17, it rotates and also prevents the cap 17 from coming off. The variable resistor according to the present invention is configured as described above.

従来の半固定可変抵抗器の両面によるドライバー調整機
構は、キャップの両面にドライバー溝を設ける場合が多
かったが、小型になるほどキャップ両面、特に髪面に一
体に設けることが困難になる。In conventional semi-fixed variable resistor double-sided driver adjustment mechanisms, driver grooves are often provided on both sides of the cap, but as the size becomes smaller, it becomes more difficult to provide the driver grooves integrally on both sides of the cap, especially on the hair side.

しかるに本発明のごとく、Ｕ字形の座金２３を設け、こ
の座金２３をキャップ１７に取付けるとともに、Ｕ字形
の形状を利用することによりドライバーを差し込んでの
調整も可能となり、機能、コストともに実用上はるかに
有利である。However, according to the present invention, a U-shaped washer 23 is provided, and this washer 23 is attached to the cap 17, and by using the U-shaped shape, adjustment can be made by inserting a screwdriver, which is much more practical in terms of function and cost. advantageous to

このように本発明によれば略Ｕ字形の座金にてキャップ
の取付け、抜け防止がはかれるとともに、この座金にド
ライバーを差し込んでの調整が可能となり、実用上極め
て効果である。As described above, according to the present invention, the cap can be attached and prevented from coming off using the substantially U-shaped washer, and adjustment can be made by inserting a screwdriver into the washer, which is extremely effective in practice.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明の−実施例における可変抵抗器の分解斜
視図、第２図はキャップの第１図とは異なる方向から見
たところの斜視図、第３図は座金の平面図、第４図は座
金の取付け法を説明するための斜視図、第５図は座金を
固定した状態の要部断面図である。 １・・・・・・抵抗体基板、２・・・・・・抵抗体、７
，７・・・・・・外端子、８・・・・・・中端子板、９
・・・・・・中空はとめ部、１２・・・・・・座板、１
４・・・・・・摺動子、１７・・・・・・キャップ、１
８…・・・円柱状突出部、２３・・・・・・座金、２４
…・・・孔、２５・・・・・・保持片。 第２図 第３図 第４図 第５図 第１図Fig. 1 is an exploded perspective view of a variable resistor according to an embodiment of the present invention, Fig. 2 is a perspective view of the cap viewed from a different direction from Fig. 1, and Fig. 3 is a plan view of the washer; FIG. 4 is a perspective view for explaining the method of attaching the washer, and FIG. 5 is a sectional view of the main part with the washer fixed. 1... Resistor board, 2... Resistor, 7
, 7...Outer terminal, 8...Inner terminal board, 9
...Hollow eyelet, 12 ... Seat plate, 1
4...Slider, 17...Cap, 1
8...Cylindrical protrusion, 23...Washer, 24
... Hole, 25 ... Holding piece. Figure 2 Figure 3 Figure 4 Figure 5 Figure 1

Claims (1)

【特許請求の範囲】[Claims] １ 端子部を介して抵抗体と接続される外端子を固定し
た抵抗体基板と、中空はとめ部を一体に突設した中端子
板とを設け、前記中空はとめ部に抵抗体基板を挿入し、
この中空はとめ部に挿入されるように前記抵抗体基板上
に座板、摺動子を順次取付けて前記抵抗体基板、座板お
よび摺動子を中端子板と一体化するとともに、前記中空
はとめ部内に前記抵抗体、座板および摺動子を覆うキヤ
ツプの円柱状突出部を挿入し、前記中端子板より突出す
る前記円柱状突出部の先端に略Ｕ字形をなす座金を固定
してなる可変抵抗器。1. A resistor board to which an outer terminal connected to the resistor through a terminal part is fixed, and an inner terminal board integrally provided with a hollow eyelet are provided, and the resistor board is inserted into the hollow eyelet. death,
A seat plate and a slider are sequentially attached onto the resistor board so as to be inserted into the hollow eyelet, and the resistor board, seat plate, and slider are integrated with the intermediate terminal board, and the hollow A cylindrical protrusion of a cap that covers the resistor, seat plate, and slider is inserted into the eyelet, and a substantially U-shaped washer is fixed to the tip of the cylindrical protrusion that protrudes from the intermediate terminal plate. Variable resistor.