JP3466372B2 - Rotary variable resistor - Google Patents
Rotary variable resistorInfo
- Publication number
- JP3466372B2 JP3466372B2 JP07328996A JP7328996A JP3466372B2 JP 3466372 B2 JP3466372 B2 JP 3466372B2 JP 07328996 A JP07328996 A JP 07328996A JP 7328996 A JP7328996 A JP 7328996A JP 3466372 B2 JP3466372 B2 JP 3466372B2
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- bearing
- hole
- knob
- rotary
- 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 - Fee Related
Links
Landscapes
- Adjustable Resistors (AREA)
Description
【発明の属する技術分野】本発明は、各種オーディオ機
器等の録音レベルや、バランスの調整用等に使われる、
あるいはエアコンユニットのエアミックスドアの位置検
出用センサとして使用される回転型可変抵抗器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for adjusting the recording level and balance of various audio equipments,
Alternatively, the present invention relates to a rotary variable resistor used as a sensor for detecting the position of the air mix door of an air conditioner unit.
【０００１】[0001]
【従来の技術】従来の回転型可変抵抗器は、例えば図９
〜図１０に示すように、フェノール樹脂積層板等の絶縁
材料からなる基板１の両面には、抵抗体２が印刷等によ
って形成されている。また、前記基板１の中央部には、
プレス加工等によって円形状の貫通穴３が設けられてい
る。また、前記基板１の両面には一対のツマミ４が配置
されている。このツマミ４の内部には弾力性のある金属
製の摺動子５が取り付けられている。そして、前記ツマ
ミ４を回転させると前記基板１の抵抗体２上を摺動子５
が摺動して抵抗値を可変できる。また、基板１の上下両
端には、端子６が前記抵抗体２と電気的に接続されて、
基板１にカシメ等により取り付けられている。2. Description of the Related Art A conventional rotary variable resistor is shown in FIG.
As shown in FIG. 10, resistors 2 are formed by printing or the like on both surfaces of a substrate 1 made of an insulating material such as a phenol resin laminated plate. In addition, in the central portion of the substrate 1,
A circular through hole 3 is provided by pressing or the like. A pair of knobs 4 are arranged on both sides of the substrate 1. Inside the knob 4, a metallic slider 5 having elasticity is attached. Then, when the knob 4 is rotated, the slider 5 moves on the resistor 2 of the substrate 1.
Can slide to change the resistance value. Further, terminals 6 are electrically connected to the resistor 2 at both upper and lower ends of the substrate 1,
It is attached to the substrate 1 by caulking or the like.
【０００２】また、前記一対のツマミ４は、該ツマミ４
の中央部の穴４ｃに嵌合させた連結軸７により、基板１
を挟んで前記摺動子５の弾性力により、適度の回転トル
クをもって、前記基板１の貫通穴３に前記ツマミ４の連
結部４ａをガイドして取り付けられている。そして、前
記連結軸７は、ツマミ４の穴４ｃの段部４ｂの部分で連
結軸７の先端７ａをつぶして、前記一対のツマミ４が前
記基板１を両側から挟んでいる。そして、ツマミ４は摺
動子５の弾力性により抵抗体２との摩擦力で回転点トル
クが生じるようになっている。また、前記一対のツマミ
４の連結部４ａに挟まれた空間部には、フェルト等で作
られた摩擦部材８を介在させて、前記一対のツマミ４が
空回りすることなく、一方のツマミを回転すれば他方の
ツマミ４も共に連動して回転するようにしている。Also, the pair of knobs 4 are
The connecting shaft 7 fitted in the hole 4c at the center of the substrate 1
The connecting portion 4a of the knob 4 is attached to the through hole 3 of the substrate 1 while being guided by the elastic force of the slider 5 with a proper rotation torque. Then, the connecting shaft 7 crushes the tip 7a of the connecting shaft 7 at the step portion 4b of the hole 4c of the knob 4, and the pair of knobs 4 sandwich the substrate 1 from both sides. The knob 4 is adapted to generate a rotational point torque by a frictional force with the resistor 2 due to the elasticity of the slider 5. In addition, a friction member 8 made of felt or the like is interposed in the space portion sandwiched by the connecting portions 4a of the pair of knobs 4 so that the pair of knobs 4 does not run idle and one of the knobs is rotated. Then, the other knob 4 is also rotated together.
【０００３】このような従来の回転型可変抵抗器におい
ては、基板１の貫通穴３をプレス加工等で穴明けしてい
た。そのために貫通穴３の側壁３ａは図１０に示すよう
な破断面になって、微小の凹凸が無数にできている。こ
の状態で、ツマミ４を繰り返し回転させて使用している
と、貫通穴３に嵌合して前記側壁３ａに接しているツマ
ミ４の連結部４ａが、前記微小の凹凸によって磨耗し
て、貫通穴３と連結部４ａの隙間が大きくなり、この状
態でツマミ４を回転させると、ツマミ４がガタついた
り、ツマミ４の回転トルクがムラになってフィーリング
が悪くなる問題があった。また、特にセンサ用として用
いられる回転型可変抵抗器においては、数１０万回転の
長寿命が要求せれたり、ツマミ４を繰り返して回転させ
ても安定した作動力が要求されているが、上記の理由に
より長寿命が達成できないという問題があった。特に最
近の回転型可変抵抗器においては、温度特性等の性能改
善のために基板１の材質をガラス繊維積層エポキシ板等
のガラス繊維入りの材料を使用するケースが増えている
ので、上述したような問題が多発していて、問題解決が
急がれているのが実情である。In such a conventional rotary variable resistor, the through hole 3 of the substrate 1 is punched by pressing or the like. Therefore, the side wall 3a of the through hole 3 has a fracture surface as shown in FIG. 10, and numerous minute irregularities are formed. In this state, when the knob 4 is repeatedly rotated and used, the connecting portion 4a of the knob 4 which is fitted into the through hole 3 and is in contact with the side wall 3a is worn by the minute unevenness and penetrates. The gap between the hole 3 and the connecting portion 4a becomes large, and when the knob 4 is rotated in this state, there is a problem that the knob 4 rattles or the rotational torque of the knob 4 becomes uneven, resulting in a bad feeling. Further, particularly in the rotary type variable resistor used for a sensor, a long life of several hundreds of thousands of revolutions is required and a stable operating force is required even when the knob 4 is repeatedly rotated. There is a problem that a long life cannot be achieved for some reason. Particularly in recent rotary variable resistors, there are an increasing number of cases where a material containing glass fiber such as a glass fiber laminated epoxy plate is used as the material of the substrate 1 in order to improve performance such as temperature characteristics. There are many such problems, and the problem is urgently solved.
【０００４】[0004]
【発明が解決しようとする課題】従来の回転型可変抵抗
器によれば、基板１の貫通穴３をプレス加工等で穴明け
していた。そのために貫通穴３の側壁３ａは図１０に示
すように破断状態になって、微小の凹凸が無数にできて
いる。その状態で、ツマミ４を繰り返して回転させて使
用していると、貫通穴３に嵌合して側壁３ａに接してい
るツマミ４の連結部４ａからなる操作部が、前記微小の
凹凸によって磨耗して、貫通穴３と連結部４ａの隙間が
大きくなり、ツマミ４を回転させようとすると、ツマミ
４がガタついたり、ツマミ４の回転トルクがムラになっ
てフィーリングが悪くなり、回転型可変抵抗器の前記操
作部の寿命を長寿命にすることが難しいというあった。
そのために本発明の回転型可変抵抗器によれば、ツマミ
４を繰り返し回転させて使用しても、ツマミ４にガタが
発生しないで、且つ、回転トルクにムラ等が発生しない
で、フィーリングが良好で前記操作部の寿命の長い回転
型可変抵抗器を提供することを目的にしている。According to the conventional rotary variable resistor, the through hole 3 of the substrate 1 is punched by pressing or the like. Therefore, the side wall 3a of the through hole 3 is in a broken state as shown in FIG. 10, and countless minute irregularities are formed. In this state, when the knob 4 is repeatedly rotated and used, the operation portion including the connecting portion 4a of the knob 4 which is fitted into the through hole 3 and is in contact with the side wall 3a is worn by the minute unevenness. Then, the gap between the through hole 3 and the connecting portion 4a becomes large, and when the knob 4 is rotated, the knob 4 rattles or the rotating torque of the knob 4 becomes uneven, resulting in a bad feeling. It has been difficult to extend the operating life of the variable resistor.
Therefore, according to the rotary variable resistor of the present invention, even when the knob 4 is repeatedly rotated and used, the knob 4 does not rattle, and the rotating torque does not have unevenness, so that the feeling can be improved. An object of the present invention is to provide a rotary variable resistor that is good and has a long operating life.
【０００５】[0005]
【課題を解決するための手段】前記課題を解決するため
の第一の手段として、フェノール樹脂或いはガラス繊維
積層板等の絶縁材からなり、少なくとも一方の面に抵抗
体が形成された基板と、該基板にプレス加工によって設
けられた貫通穴と、該貫通穴に係止する係止部を有する
合成樹脂製の軸受と、該軸受の中央に設けられた円形の
穴に回転自在に挿通される回転軸と、該回転軸が一体化
されて突出形成されたツマミと、該ツマミの凹部に取り
付けられ前記抵抗体の表面を摺動する摺動子とを備え、
前記係止部は軸受の軸線方向に割溝を設けて、前記係止
部を前記基板の貫通穴に挿入して前記基板に軸受を取り
付けた構成とした。また、前記課題を解決する第２の解
決手段として、前記軸受けは、前記割溝によりそれぞれ
分離して設けられた、くさび状の係止部と、回り止め部
を備え、前記係止部が弾力性を有して前記貫通穴にスナ
ップイン係合して取り付けられて、前記回り止め部が前
記貫通穴に係止されて、前記基板に前記軸受が回り止め
して取り付けられると共に、前記回転軸の先端外周に、
くさび状の係止部材を形成し、該係止部材を前記軸受に
スナップイン係合して前記回転軸を前記軸受に取り付け
た構成とした。また、前記課題を解決するための第３の
解決手段として、前記軸受は、前記基板の一方側から前
記係止部が前記貫通穴に挿入して、スナップイン係合し
て回り止めして取り付けられると共に、前記基板の他方
側から、前記回転軸の係止部材を前記軸受に挿入して、
スナップイン係合して前記ツマミを前記基板の他方側に
取り付ける構成とした。また、前記課題を解決する第４
の解決手段として、抵抗体が形成された基板と、該基板
に設けられた貫通穴と、前記基板の一方側に取り付けら
れたツマミと、該ツマミに一体化されて突出形成され前
記貫通穴に挿入される回転軸と、前記ツマミの凹部に取
り付けられ前記抵抗体の表面を摺動する摺動子と、前記
基板の他方側に配置され前記回転軸が挿入される穴を有
する回転体とを備え、前記回転軸に、くさび状の係止部
材を形成し、該係止部材を前記回転体の穴にスナップイ
ン係合して前記回転軸と前記回転体とを係合させると共
に、前記係止部材と前記回 転体の間に横方向から挿入す
る抜け止め部材を設け、前記回転体に前記抜け止め部材
を位置決めして固定する位置決め部を設けた構成とし
た。また、前記課題を解決する第５の解決手段として、
前記抜け止め部材の脚部の回転軸当接部分と、回転軸が
当接しない部分のさかい目付近の長手方向に、スリット
を設けた構成とした。また、前記課題を解決する第６の
解決手段として、前記抵抗体を前記基板の両面に形成
し、一方の面に形成した前記抵抗体に前記ツマミに設け
た摺動子片を摺動させ、前記回転体には凹部を設け、該
凹部に他方の面に形成した前記抵抗体の表面を摺動する
摺動子を配置し、且つ、前記係止部材に平面部を形成
し、該平面部が前記回転体の小判状の穴に嵌合すること
により、記回転軸と前記回転体とが共に連動して回転す
るようにした構成とした。 As a first means for solving the above-mentioned problems, phenol resin or glass fiber
Made of insulating material such as laminated boards, and has resistance on at least one side
It has a substrate on which a body is formed, a through hole formed in the substrate by press working, and an engaging portion that engages with the through hole.
A bearing made of synthetic resin and a circular bearing provided in the center of the bearing .
The rotary shaft that is rotatably inserted in the hole and the rotary shaft are integrated
And the protrusion that is formed by projecting it into the recess of the knob.
A slider attached to slide on the surface of the resistor ,
The locking portion is provided with a split groove in the axial direction of the bearing, and the locking portion is inserted into the through hole of the substrate to mount the bearing on the substrate. Further, as a second solving means for solving the above-mentioned problems, the bearings are respectively formed by the split grooves.
Wedge-shaped locking part and detent part that are provided separately
And the engaging portion is elastic so that the
It is attached by a push-in engagement and the detent
The bearing is locked to the through hole to prevent the bearing from rotating on the substrate.
And attached to the outer circumference of the tip of the rotating shaft,
A wedge-shaped locking member is formed, and the locking member is attached to the bearing.
The rotary shaft is attached to the bearing by snap-in engagement . In addition, as a third means for solving the above-mentioned problems, the bearing is provided from one side of the substrate.
The locking part is inserted into the through hole and snap-in engaged.
The other side of the board
From the side, insert the locking member of the rotary shaft into the bearing,
Snap-in to move the knob to the other side of the board
It was configured to be attached. In addition, the fourth to solve the above problems
As a means for solving the problem, a substrate on which a resistor is formed, and the substrate
Attached to one side of the board.
The knob that has been
The rotary shaft to be inserted into the through hole and the recess of the knob.
A slider that is attached and slides on the surface of the resistor;
Has a hole that is placed on the other side of the board and into which the rotary shaft is inserted.
And a rotary member for rotating the rotary shaft,
Material, and snap the locking member into the hole of the rotating body.
And the rotary shaft and the rotary body are engaged with each other.
To, be inserted from the lateral direction between the locking member and the rotating member
A retaining member is provided , and a positioning portion for positioning and fixing the retaining member is provided on the rotating body. In addition, as a fifth means for solving the above problems,
A slit is provided in the longitudinal direction near the rotary shaft contact portion of the leg portion of the retaining member and the portion not contacting the rotary shaft in the longitudinal direction. In addition, the sixth to solve the above problems
As a solution, the resistor is formed on both sides of the substrate.
The resistor formed on one surface on the knob
Slide the slider piece to form a recess in the rotor,
Sliding on the surface of the resistor formed on the other surface in the recess
A slider is arranged and a flat surface is formed on the locking member.
And that the flat portion fits into the oval hole of the rotating body.
Allows the rotary shaft and the rotary body to rotate together.
It is configured to be.
【０００６】[0006]
【発明の実施の形態】以下、本発明の回転型可変抵抗器
の１実施の形態について図１ないし図８を参照して説明
する。図１〜３の図面において、フェノール樹脂積層板
あるいはガラス繊維積層エポキシ板等の絶縁材料からな
る基板１１の両面には、抵抗体１２が印刷等によって形
成されている。また前記基板１１の中央部にはプレス加
工等によって小判形状の貫通穴１１ａが設けられてい
る。また、基板１１の上下両端側には端子１４をカシメ
付ける端子穴１１ｂが設けられている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a rotary variable resistor according to the present invention will be described below with reference to FIGS. 1 to 3, resistors 12 are formed by printing or the like on both surfaces of a substrate 11 made of an insulating material such as a phenol resin laminated plate or a glass fiber laminated epoxy plate. Further, an oval through hole 11a is formed in the center of the substrate 11 by pressing or the like. Further, terminal holes 11b for crimping the terminals 14 are provided on both upper and lower ends of the substrate 11.
【０００７】また、図４・５に示すように、合成樹脂等
の材料からなる軸受１５は、略円盤状のつば部１５ａ
と、くさび状の係止部１５ｂと、回り止め部１５ｃから
なって、中央部に円形の穴１５ｄを設けて形成されてい
る。そして、係止部１５ｂと回り止め部１５ｃは、４つ
の割溝１５ｅによりそれぞれ分離されているが、根元の
部分で前記つば部１５ａとつながって一体化されてい
る。そして、係止部１５ｂは割溝１５ｅで回り止め部と
分離されているので弾力性がある。このような構成の軸
受１５は、前記基板１１の小判形状の貫通穴１２に、係
止部１５ｂがスナップイン係合されて取り付けられる。
且つ、軸受１５の回り止め部１５ｃが基板１１の小判形
状の貫通穴１１ａに回り止めされて取り付けられてい
る。前記軸受１５の回り止め構造は小判形状の係合に限
定されるものでなく、各種異形状やＤカットのものでも
よい。As shown in FIGS. 4 and 5, the bearing 15 made of a material such as synthetic resin has a substantially disk-shaped brim portion 15a.
And a locking portion 15c having a wedge shape and a rotation stopping portion 15c, which is formed by providing a circular hole 15d in the central portion. The locking portion 15b and the rotation stopping portion 15c are separated by the four dividing grooves 15e, respectively, but are connected and integrated with the flange portion 15a at the root portion. Since the locking portion 15b is separated from the rotation preventing portion by the split groove 15e, it has elasticity. The bearing 15 having such a configuration is attached to the oval-shaped through hole 12 of the substrate 11 by snap-engaging the locking portion 15b.
In addition, the rotation stopping portion 15c of the bearing 15 is fixed to the oval through hole 11a of the substrate 11 so as not to rotate. The detent structure of the bearing 15 is not limited to the oval-shaped engagement, but various different shapes and D-cuts may be used.
【０００８】また、摺動子１６は弾力性のあるリン青銅
等の材料で加工されて、複数の接点部１６ａが突出形成
されて、前記基板１１の抵抗体１２の表面を摺動するよ
うになっている。そして、この摺動子１６は基板１１の
一方側に取り付けらるツマミ１７の凹部１７ａに内蔵さ
れて、該凹部１７ａの内面の複数の突起１７ｂに圧入あ
るいはカシメ等により取り付けられている。また、合成
樹脂等の材料からなるツマミ１７は、中央部にはツマミ
１７を基板１１に回転自在に係止するための回転軸１８
が一体化されて突出形成されている。そして、該回転軸
１８の先端外周には、くさび状の係止部材１８ａが、軸
線方向の割溝１８ｂにより２つに分割されて形成されて
いる。また、このくさび状の係止部材１８ａの左右には
平面部１８ｃが設けられている。Further, the slider 16 is made of an elastic material such as phosphor bronze, and a plurality of contact portions 16a are formed so as to project, so that the slider 16 slides on the surface of the resistor 12 of the substrate 11. Has become. The slider 16 is built in a recess 17a of a knob 17 attached to one side of the substrate 11 and is press-fitted or caulked to a plurality of protrusions 17b on the inner surface of the recess 17a. Further, the knob 17 made of a material such as a synthetic resin has a rotary shaft 18 at the center for locking the knob 17 to the substrate 11 in a rotatable manner.
Are integrally formed to form a protrusion. A wedge-shaped locking member 18a is formed on the outer periphery of the tip end of the rotary shaft 18 by being divided into two by a split groove 18b in the axial direction. Further, flat portions 18c are provided on the left and right sides of the wedge-shaped locking member 18a.
【０００９】また、基板１１の他方側には回転軸１８に
連動して回転する摺動子受け、即ち、回転体１９が取り
付けられている。この回転体１９の中央部には小判形状
の穴１９ａが形成されている。そして、この穴１９ａに
は前記回転軸１８先端のくさび状の係止部材１８ａがス
ナップイン係合されて取り付けられる。且つ、前記穴１
９ａの小判形状と回転軸１８先端の平面部１８ｃによっ
て、回転軸１８と回転体１９が共に連動して回転するよ
うになっている。即ち、ツマミ１７を回転させると摺動
子受けからなる回転体１９も連動して回転する。また、
回転体１９の基板１１と接する側には、凹部１９ｂが摺
動子１６を図示しない突起に圧入あるいはカシメ等によ
り取り付けて内蔵している。また、この内蔵された摺動
子１６はツマミ１７に取り付けられた摺動子１６と同様
に、基板１１に形成された抵抗体１２の表面を摺動でき
る。また、回転体１９の外側の平面には位置決め突起１
９ｃが段差をもって形成されている。On the other side of the substrate 11, there is attached a slider receiver, that is, a rotating body 19, which rotates in conjunction with the rotating shaft 18. An oval-shaped hole 19a is formed in the center of the rotating body 19. Then, a wedge-shaped locking member 18a at the tip of the rotary shaft 18 is snap-in engaged and attached to the hole 19a. And the hole 1
Due to the oval shape of 9a and the flat surface portion 18c at the tip of the rotary shaft 18, the rotary shaft 18 and the rotary body 19 rotate together. That is, when the knob 17 is rotated, the rotating body 19 composed of the slider receiver is also rotated in association with it. Also,
On the side of the rotating body 19 in contact with the substrate 11, the recessed portion 19b is provided by incorporating the slider 16 into a protrusion (not shown) by press fitting or caulking. Further, the built-in slider 16 can slide on the surface of the resistor 12 formed on the substrate 11, similarly to the slider 16 attached to the knob 17. In addition, the positioning protrusion 1 is provided on the outer surface of the rotating body 19.
9c is formed with a step.
【００１０】また、前記回転体１９の位置決め突起１９
ｃに位置決めされて、抜け止め部材２０が、回転軸１８
に係止して取り付けられている。そして、この抜け止め
部材２０は弾力性のある金属材料例えばリン青銅等の板
材からなり、２つの脚部２０ａが軸係止溝２０ｂを挟ん
で、大きい円弧状の丸みをもって形成されている。ま
た、前記軸係止溝２０ａは、回転軸１８の係止部１８ａ
の基部１８ｄに挿入しやすく、且つ、確実に回転軸１８
の抜け止めをするために、入り口を広く、内部の中心部
を狭くして形成されている。また、前記脚部２０ａの回
転軸１８当接部分と、回転軸１８が当接しない部分のさ
かい目付近の長手方向に、細幅のスリット２０ｃを形成
し、本発明の回転型可変抵抗器が構成されている。Further, the positioning projection 19 of the rotating body 19
The retaining member 20 is positioned on the rotation shaft 18
It is locked and attached to. The retaining member 20 is made of an elastic metal material, for example, a plate material such as phosphor bronze, and two leg portions 20a are formed with a large arcuate roundness with the shaft locking groove 20b interposed therebetween. Further, the shaft locking groove 20a is provided with the locking portion 18a of the rotary shaft 18.
It is easy to insert into the base 18d of the
It is formed with a wide entrance and a narrow central part to prevent it from coming off. Further, a narrow slit 20c is formed in a portion of the leg portion 20a in contact with the rotary shaft 18 and in a longitudinal direction near a gap between the portions where the rotary shaft 18 does not come into contact, so that the rotary variable resistor of the present invention is provided. It is configured.
【００１１】次に、本発明の回転型可変抵抗器の組立に
ついて説明する。まず基板１１が上下両端の端子穴１１
ｂに端子１４をカシメ付けて形成されている。この基板
１１の中央部の小判形状の貫通穴１１ａに、軸受１５の
係止部１５ｂと回り止め部１５ｃを押し込むと、軸受１
５は係止部１５ｂの弾力性によって、前記基板１１の貫
通穴１１ａにスナップイン係合され、且つ、回り止めさ
れて取り付けられる。また、摺動子６が取り付けられた
ツマミ１７に突出形成された回転軸１８を前記基板１１
に取り付けた軸受１５に押し込むと、回転軸１８は軸受
１５にスナップイン係合されて回転部１８ｅが回転自在
に取り付けられる。Next, the assembly of the rotary variable resistor of the present invention will be described. First, the board 11 has terminal holes 11 at both upper and lower ends.
It is formed by crimping the terminal 14 to b. When the locking portion 15b and the rotation stop portion 15c of the bearing 15 are pushed into the oval through hole 11a in the center of the substrate 11, the bearing 1
5 is snap-in engaged with the through hole 11a of the substrate 11 by the elasticity of the locking portion 15b, and is attached so as not to rotate. In addition, the rotary shaft 18 protruding from the knob 17 to which the slider 6 is attached is attached to the substrate 11
When it is pushed into the bearing 15 attached to, the rotary shaft 18 is snap-in engaged with the bearing 15 and the rotating portion 18e is rotatably attached.
【００１２】そして、前記軸受１５に取り付けられて、
該軸受１５から出っ張った回転軸１８の先端の係止部材
１８ａに、回転体１９の小判形状の穴１９ａを挿入する
と、回転体１９は回転軸１８と共に連動して回転する。
即ち、ツマミ１７と回転体１９は抵抗基板１１を挟ん
で、回転軸１８によって連結され、スナップイン係合に
より仮止めされて回転自在に取り付けられる。但し、こ
の仮止め状態ではツマミ１７と回転体１９は、摺動子１
６の弾性力で抵抗体１２の表面に接点部１６ａを圧接し
ているので、ツマミ１７に外部から指等で軸方向に荷重
を加えると軸方向のガタが発生する。Then, attached to the bearing 15,
When the oval hole 19a of the rotary body 19 is inserted into the locking member 18a at the tip of the rotary shaft 18 protruding from the bearing 15, the rotary body 19 rotates together with the rotary shaft 18.
That is, the knob 17 and the rotary body 19 are connected by the rotary shaft 18 with the resistance substrate 11 interposed therebetween, and are temporarily fixed by snap-in engagement and rotatably mounted. However, in this temporarily fixed state, the knob 17 and the rotating body 19 are
Since the contact portion 16a is pressed against the surface of the resistor 12 by the elastic force of 6, the axial play is generated when a load is applied to the knob 17 from the outside with a finger or the like in the axial direction.
【００１３】次に、前記軸方向のガタをなくするため
に、回転軸１８の先端の係止部材１８ａの基部１８ｄ
に、前記抜け止め部材２０を横方向から挿入する。そし
て、この回転軸１８への抜け止め部材２０の挿入は、前
記軸係止溝２０ｂの幅広の入り口部分を、前記回転軸１
８の係止部材１８ａの基部１８ｄに位置させ、且つ、抜
け止め部材２０の２つの脚部２０ａの先端外側を、回転
体１９の位置決め突起１９ｃで位置決めして、抜け止め
部材２０を押し込む。そうすると、抜け止め部材２０
は、図７に示すように四方の外形が、位置決め突起１９
ｃに位置決めされて取り付けられる。このように、抜け
止め部材２０は前記位置決め突起１９ｃでガイドされて
挿入できるので組み立て作業性がよく、また、前記位置
決め突起１９ｃに組み込んだ後は四方の外形を位置決め
されるので、外部からの振動等で、回転体１９から抜け
出すことはない。また、前記抜け止め部材２０の脚部２
０ａの回転軸１８当接部分と、当接しない部分のさかい
目の長手方向に、細幅のスリット２０ｃが設けられてい
るので、前記脚部２０ａの回転軸１８当接部分が、回転
体１９の平坦部と水平になっているので、前記抜け止め
部材２０の弾力性の働きで、回転軸１８を一方方向に引
っ張っる力が働き、前述したような軸ガタをなくするこ
とができる。また、前記スリット２０ｃを設けることに
よって、弾力性を抑えることがことができると伴に、前
記位置決め突起１９ｃによって位置決めされる部分と、
弾力性を付与する部分を分離することができる。そのた
めに、抜け止め部材２０の弾力性を確実にバラツキなく
回転軸に伝えることができるので、更に軸ガタを抑える
ことができる。Next, in order to eliminate the play in the axial direction, the base portion 18d of the locking member 18a at the tip of the rotary shaft 18 is removed.
Then, the retaining member 20 is laterally inserted. When the retaining member 20 is inserted into the rotary shaft 18, the wide entrance portion of the shaft locking groove 20b is inserted into the rotary shaft 1.
8 is positioned at the base portion 18d of the locking member 18a, and the outer ends of the two legs 20a of the retaining member 20 are positioned by the positioning protrusions 19c of the rotating body 19, and the retaining member 20 is pushed. Then, the retaining member 20
As shown in FIG.
It is positioned and attached to c. In this way, the retaining member 20 can be inserted while being guided by the positioning protrusions 19c, so that the assembling workability is good. Also, since the retaining members 20 are positioned in the four outer shapes after being incorporated into the positioning protrusions 19c, vibrations from the outside can be expected. Therefore, it does not come out of the rotating body 19. In addition, the leg portion 2 of the retaining member 20
0a is provided with a narrow slit 20c in the longitudinal direction of the interlocking portion of the rotating shaft 18 and the non-contacting portion thereof. Since it is horizontal with the flat portion of the above, the elastic force of the retaining member 20 exerts a force that pulls the rotating shaft 18 in one direction, so that the above-mentioned axial play can be eliminated. Further, by providing the slit 20c, elasticity can be suppressed, and at the same time, a portion positioned by the positioning protrusion 19c,
The part that imparts elasticity can be separated. Therefore, the elasticity of the retaining member 20 can be surely transmitted to the rotating shaft without variation, so that the axial play can be further suppressed.
【００１４】また、本発明の他の実施の形態として、図
８に示すように基板２１の片側面には抵抗体１２が形成
されている。また、基板２１の中央部には小判形状の貫
通穴２３が設けられている。そして、基板２１の上下両
端には端子１４がカシメ付けられて基板２１が構成され
ている。また、上述した軸受１５が基板２１の一方側か
ら前記貫通穴２３に挿入してスナップイン係合し、且
つ、回り止めされて取り付けられている。また、ツマミ
２２は凹部２２ａに摺動子６を内蔵し、中央部に基板２
１に回転自在に係止するための回転軸２４が一体化され
て突出形成されている。そして、該回転軸２４を前記軸
受２４の穴に、基板２１の他方側から挿入して、スナッ
プイン係合してツマミ２２を基板２１の他方側に取り付
けられている。そのために、前記回転軸２４の先端外周
には、くさび状の係止部２４ａが割溝２４ｂによって２
つに分割されて形成されている。As another embodiment of the present invention, as shown in FIG. 8, a resistor 12 is formed on one side surface of the substrate 21. In addition, an oval through hole 23 is provided in the center of the substrate 21. The terminals 14 are crimped to the upper and lower ends of the board 21 to form the board 21. Further, the above-mentioned bearing 15 is inserted into the through hole 23 from one side of the substrate 21 so as to be snap-in engaged, and is attached so as not to rotate. Further, the knob 22 has the slider 6 built in the concave portion 22a, and the substrate 2 is provided in the central portion.
A rotary shaft 24 for rotatably locking the shaft 1 is integrally formed in a protruding manner. Then, the rotary shaft 24 is inserted into the hole of the bearing 24 from the other side of the substrate 21, and the knob 22 is attached to the other side of the substrate 21 by snap-in engagement. Therefore, a wedge-shaped locking portion 24a is formed on the outer circumference of the tip of the rotary shaft 24 by the split groove 24b.
It is divided into two parts.
【００１５】[0015]
【発明の効果】以上説明したように、本発明の回転型可
変抵抗器によれば、軸受の軸線方向に割溝と抜け止めの
係止部を備えて基板に取り付けたので、回転軸は軸受の
平滑な内面と接して回転するので、繰り返して回転させ
て使用しても軸ガタが発生したり、回転トルクのムラが
発生して回転フィーリングが悪くなることがなくなるの
で、従来の回転型可変抵抗器より回転寿命特性を大幅に
向上させることができる。且つ、前記軸受の係止部を基
板の貫通穴にスナップイン係合させて取り付けたので、
基板への軸受の取り付け作業が指等でワンタッチででき
るので、特別な組立治具等も必要なく作業性もよい。ま
た、基板の貫通穴に軸受の回り止めを備えたことで、基
板の貫通穴に係止された軸受が、回転軸の回転で回転し
ないので、回転軸は軸受との間だけで確実に回転するの
で更に回転寿命特性が向上する。As described above, according to the rotary type variable resistor of the present invention, the rotary shaft is mounted on the substrate by being provided with the split groove and the retaining portion for retaining in the axial direction of the bearing. Since it rotates in contact with the smooth inner surface of the machine, even if it is repeatedly rotated and used, shaft backlash will not occur, and uneven rotation torque will not occur and the rotation feeling will not deteriorate, so the conventional rotary type Rotational life characteristics can be greatly improved compared to the variable resistor. Moreover, since the locking portion of the bearing is attached by snap-in engagement with the through hole of the substrate,
Since the work of attaching the bearing to the substrate can be done with one touch of a finger or the like, no special assembly jig is required and workability is good. In addition, since the through hole of the board is equipped with a rotation stopper for the bearing, the bearing locked in the through hole of the board does not rotate due to the rotation of the rotating shaft, so the rotating shaft can rotate only with the bearing. Therefore, the rotation life characteristic is further improved.
【００１６】また、回転軸に抜け止めの係止部材を備
え、この係止部材に割溝を設けたことで、該係止部を摺
動子受けからなる回転体に、スナップイン係合によりワ
ンタッチで取り付けることができるので、本発明の回転
型可変抵抗器を組み立てるのに、特別な組立用治具も必
要ないので作業性もよい。且つ、回転軸は係止部材で回
転体に仮止めされるので、次の作業の抜け止め部材を取
り付ける作業に、取り掛かりやすいので全体の組立作業
性がアップする。Further, the rotation shaft is provided with a retaining member for retaining, and the retaining member is provided with a split groove, so that the retaining portion is snap-in engaged with the rotating body composed of the slider receiver. Since it can be attached with one touch, workability is also good because no special assembly jig is required to assemble the rotary variable resistor of the present invention. Moreover, since the rotating shaft is temporarily fixed to the rotating body by the locking member, it is easy to start the work of attaching the retaining member in the next work, so that the overall assembling workability is improved.
【００１７】また、回転体に、位置決め部を設けたこと
で、抜け止め部材を回転軸先端に挿入するときに、前記
抜け止め部材が前記位置決め部でガイドされて挿入でき
るので作業性がよい。且つ、抜け止め部材は位置決め部
の段差で固定されるので、外部からの振動等によって回
転軸から外れることはない。また、前記抜け止め部材に
弾性力を持たせることで、１つの部材で回転軸の抜け止
めと回転軸を一方方向に引っ張ることの両方を兼用でき
るので部品点数の削減ができ、コスト低減に効果があ
る。Further, since the rotating body is provided with the positioning portion, when the retaining member is inserted into the tip of the rotating shaft, the retaining member can be guided and inserted by the positioning portion, which improves workability. Moreover, since the retaining member is fixed at the step of the positioning portion, it does not come off from the rotation shaft due to external vibration or the like. Further, by providing the retaining member with an elastic force, it is possible to use both of the retaining member of the rotating shaft and the pulling of the rotating shaft in one direction by one member, so that the number of parts can be reduced and the cost can be reduced. There is.
【００１８】また、前記抜け止め部材の脚部にスリット
を設けたので、該スリットにより回転軸当接部分と、回
転軸が当接しない部分とに分けられるので、前記回転軸
当接部分は、抜け止め部材を載置している回転体の平坦
部と平行に上下移動することができるので、抜け止め部
材の弾力性を確実に回転軸に伝えて回転軸を一方方向に
確実に引っ張る力が働くので、回転軸のガタを押さえる
ことができる。また、スリットにより、抜け止め部材の
弾力性を小さくすることができるので、必要以上に回転
トルクを大きくすることがなく、位置検出用のセンサと
して用いる場合は好適である。Further, since the leg of the retaining member is provided with a slit, the slit is divided into a rotating shaft contact portion and a portion not contacting the rotating shaft. Since it is possible to move up and down in parallel with the flat part of the rotating body on which the retaining member is placed, the force that reliably transmits the elasticity of the retaining member to the rotating shaft and pulls the rotating shaft in one direction surely is provided. Since it works, it can hold back the rotary shaft. Further, since the elasticity of the retaining member can be reduced by the slit, it is suitable for use as a sensor for position detection without increasing the rotational torque more than necessary.
【図１】本発明の回転型可変抵抗器の側面図。FIG. 1 is a side view of a rotary variable resistor according to the present invention.
【図２】本発明の回転型可変抵抗器の要部断面図。FIG. 2 is a sectional view of an essential part of a rotary variable resistor according to the present invention.
【図３】本発明の回転型可変抵抗器の分解斜視図。FIG. 3 is an exploded perspective view of a rotary variable resistor according to the present invention.
【図４】本発明の回転型可変抵抗器の軸受の要部断面
図。FIG. 4 is a sectional view of an essential part of a bearing of a rotary variable resistor according to the present invention.
【図５】本発明の回転型可変抵抗器の軸受の斜視図。FIG. 5 is a perspective view of a bearing of the rotary variable resistor according to the present invention.
【図６】本発明の回転型可変抵抗器のツマミと回転軸の
要部断面図。FIG. 6 is a sectional view of a main part of a knob and a rotary shaft of the rotary variable resistor according to the present invention.
【図７】本発明の回転型可変抵抗器の抜け止め部材を取
り付けた状態を説明する図面。FIG. 7 is a diagram illustrating a state in which a retaining member of the rotary variable resistor of the present invention is attached.
【図８】本発明の回転型可変抵抗器のその他の実施の形
態を説明する要部断面図。FIG. 8 is a cross-sectional view of a main part for explaining another embodiment of the rotary variable resistor of the present invention.
【図９】従来の回転型可変抵抗器の要部断面図。FIG. 9 is a sectional view of a main part of a conventional rotary variable resistor.
【図１０】従来の回転型可変抵抗器の部分断面図。FIG. 10 is a partial sectional view of a conventional rotary variable resistor.
１ 基板 ２ 抵抗体 ３ 貫通穴 ４ ツマミ ５ 摺動子 ６ 端子 ７ 連結軸 ８ 摩擦部材 １１ 本発明の基板 １１ａ 貫通穴 １２ 抵抗体 １５ 軸受 １５ｂ 係止部 １５ｃ 回り止め部 １５ｅ 割溝 １６ 摺動子 １７ ツマミ １７ａ 凹部 １８ 回転軸 １８ａ 係止部材 １８ｂ 割溝 １８ｃ 平面部 １９ 回転体 １９ａ 穴 １９ｃ 位置決め突起 ２０ 抜け止め部材 ２０ａ 脚部 ２０ｃ スリット 1 substrate 2 resistor 3 through holes 4 knob 5 slider 6 terminals 7 connecting shaft 8 Friction member 11 Substrate of the present invention 11a through hole 12 resistor 15 bearings 15b Locking part 15c Detent part 15e split groove 16 Slider 17 knob 17a recess 18 rotation axis 18a locking member 18b split groove 18c flat surface 19 rotating body 19a hole 19c Positioning protrusion 20 retaining member 20a leg 20c slit
Claims (6)
等の絶縁材からなり、少なくとも一方の面に抵抗体が形
成された基板と、該基板にプレス加工によって設けられ
た貫通穴と、該貫通穴に係止する係止部を有する合成樹
脂製の軸受と、該軸受の中央に設けられた円形の穴に回
転自在に挿通される回転軸と、該回転軸が一体化されて
突出形成されたツマミと、該ツマミの凹部に取り付けら
れ前記抵抗体の表面を摺動する摺動子とを備え、前記係
止部は軸受の軸線方向に割溝を設けて、前記係止部を前
記基板の貫通穴に挿入して前記基板に軸受を取り付けた
ことを特徴とする回転型可変抵抗器。1. Phenolic resin or glass fiber laminate
Made of insulating material, and the resistor is formed on at least one surface.
Synthetic resin having a substrate made a through hole formed by press working on the substrate, an engagement portion for engaging the through hole
Rotate the grease bearing and the circular hole in the center of the bearing.
The rotation shaft that is inserted rotatably and the rotation shaft are integrated
Mount the knob on the protrusion and the recess of the knob.
A slider that slides on the surface of the resistor, the engaging portion is provided with a split groove in the axial direction of the bearing, and the engaging portion is inserted into the through hole of the substrate to attach the substrate to the substrate. A rotary variable resistor with a bearing attached.
分離して設けられた、くさび状の係止部と、回り止め部
を備え、前記係止部が弾力性を有して前記貫通穴にスナ
ップイン係合して取り付けられて、前記回り止め部が前
記貫通穴に係止されて、前記基板に前記軸受が回り止め
して取り付けられると共に、前記回転軸の先端外周に、
くさび状の係止部材を形成し、該係止部材を前記軸受に
スナップイン係合して前記回転軸を前記軸受に取り付け
たことを特徴とする請求項１記載の回転型可変抵抗器。2. The bearings are respectively formed by the split grooves.
Wedge-shaped locking part and detent part that are provided separately
And the engaging portion is elastic so that the
It is attached by a push-in engagement and the detent
The bearing is locked to the through hole to prevent the bearing from rotating on the substrate.
And attached to the outer circumference of the tip of the rotating shaft,
A wedge-shaped locking member is formed, and the locking member is attached to the bearing.
The rotary variable resistor according to claim 1, wherein the rotary shaft is attached to the bearing by snap-in engagement .
係止部が前記貫通穴に挿入して、スナップイン係合して
回り止めして取り付けられると共に、前記基板の他方側
から、前記回転軸の係止部材を前記軸受に挿入して、ス
ナップイン係合して前記ツマミを前記基板の他方側に取
り付けることを特徴とする請求項２記載の回転型可変抵
抗器。 3. The bearing is provided from one side of the substrate to the bearing.
The locking part is inserted into the through hole and snap-in engaged.
The other side of the board, which is attached by stopping rotation
Insert the locking member of the rotary shaft into the bearing,
Snap in the knob to the other side of the board by nap-in engagement.
3. The rotary variable resistor according to claim 2, wherein the rotary variable resistor is attached.
Armor.
けられた貫通穴と、前記基板の一方側に取り付けられた
ツマミと、該ツマミに一体化されて突出形成され前記貫
通穴に挿入される回転軸と、前記ツマミの凹部に取り付
けられ前記抵抗体の表面を摺動する摺動子と、前記基板
の他方側に配置され前記回転軸が挿入される穴を有する
回転体とを備え、前記回転軸に、くさび状の係止部材を
形成し、該係止部材を前記回転体の穴にスナップイン係
合して前記回転軸と前記回転体とを係合させると共に、
前記係止部材と前記回転体の間に横方向から挿入する抜
け止め部材を設け、前記回転体に前記抜け止め部材を位
置決めして固定する位置決め部を設けたことを特徴とす
る回転型可変抵抗器。4. A substrate on which a resistor is formed and a substrate provided on the substrate.
Attached to one side of the board
The knob and the protrusion formed integrally with the knob,
Mounted on the rotary shaft inserted into the through hole and the recess of the knob
A slider sliding on the surface of the resistor, and the substrate
Has a hole that is arranged on the other side of
A rotary body, and a wedge-shaped locking member is provided on the rotary shaft.
And snap the locking member into the hole of the rotating body.
Together with engaging the rotary shaft and the rotary body,
Inserting from the lateral direction between the locking member and the rotating body
Only a stop member is provided, the rotational variable resistor, characterized in that a positioning portion for positioning and fixing the retainer member to the rotating member.
分と、回転軸が当接しない部分のさかい目付近の長手方
向に、スリットを設けたことを特徴とする請求項４記載
の回転型可変抵抗器。5. A rotary shaft contact portion of the leg portion of the retaining member, in the longitudinal direction in the vicinity of Sakai th partial rotation shaft does not contact, according to claim 4, characterized in that a slit < br /> rotary variable resistor.
一方の面に形成した前記抵抗体に前記ツマミに設けた摺A slider provided on the knob on the resistor formed on one surface.
動子片を摺動させ、前記回転体には凹部を設け、該凹部Sliding the armature piece, the recess is provided in the rotating body.
に他方の面に形成した前記抵抗体の表面を摺動する摺動Sliding on the surface of the resistor formed on the other surface
子を配置し、且つ、前記係止部材に平面部を形成し、該And a flat portion is formed on the locking member.
平面部が前記回転体の小判状の穴に嵌合することによBy fitting the flat part into the oval hole of the rotating body,
り、記回転軸と前記回転体とが共に連動して回転するよThe rotating shaft and the rotating body will rotate together.
うにしたことを特徴とする請求項４、又は５記載の回転The rotation according to claim 4 or 5, characterized in that
型可変抵抗器。Type variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07328996A JP3466372B2 (en) | 1996-03-04 | 1996-03-04 | Rotary variable resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07328996A JP3466372B2 (en) | 1996-03-04 | 1996-03-04 | Rotary variable resistor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09246019A JPH09246019A (en) | 1997-09-19 |
| JP3466372B2 true JP3466372B2 (en) | 2003-11-10 |
Family
ID=13513852
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07328996A Expired - Fee Related JP3466372B2 (en) | 1996-03-04 | 1996-03-04 | Rotary variable resistor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3466372B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4900715B2 (en) * | 2007-12-20 | 2012-03-21 | 日本電気株式会社 | Attaching / detaching rotary terminal cover and folding mobile phone |
| CN105810374A (en) * | 2016-05-25 | 2016-07-27 | 常州市武进凯利达电子有限公司 | Potentiometer with thermal-expansion-resistant sealing layer |
-
1996
- 1996-03-04 JP JP07328996A patent/JP3466372B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09246019A (en) | 1997-09-19 |
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