JP3734353B2 - Operation mechanism of rotating electrical parts - Google Patents

Operation mechanism of rotating electrical parts Download PDF

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Publication number
JP3734353B2
JP3734353B2 JP31217397A JP31217397A JP3734353B2 JP 3734353 B2 JP3734353 B2 JP 3734353B2 JP 31217397 A JP31217397 A JP 31217397A JP 31217397 A JP31217397 A JP 31217397A JP 3734353 B2 JP3734353 B2 JP 3734353B2
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Japan
Prior art keywords
housing
operation knob
rotary
cylindrical portion
operating body
Prior art date
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Expired - Fee Related
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JP31217397A
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Japanese (ja)
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JPH11144564A (en
Inventor
満 古舘
達也 横山
文彦 柏原
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Priority to JP31217397A priority Critical patent/JP3734353B2/en
Priority to EP19980308697 priority patent/EP0917170B1/en
Publication of JPH11144564A publication Critical patent/JPH11144564A/en
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Publication of JP3734353B2 publication Critical patent/JP3734353B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/14—Operating parts, e.g. turn knob
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
    • H01H3/08—Turn knobs
    • H01H3/10—Means for securing to shaft of driving mechanism
    • H01H2003/105—Means for securing to shaft of driving mechanism with compensation of misalignment in the link between the operating part, the driving mechanism and the switch, e.g. misalignment between two axis
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H2019/008—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand with snap mounting of rotatable part on fixed part, e.g. rotor on stator, operating knob on switch panel

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Adjustable Resistors (AREA)
  • Switches With Compound Operations (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、ロータリスイッチやロータリボリューム等の回転型電気部品を操作つまみの回転によって動作させる回転型電気部品の操作機構に関する。
【０００２】
【従来の技術】
回転型電気部品は各種機器への組込み時にプリント基板上に実装されるが、通常、その回転軸に操作つまみが取り付けられるようになっている。一例として、車載用の空調装置においては、プリント基板を覆うハウジング（外装パネル）から操作つまみを露出させ、この操作つまみをユーザの手指で回転操作することにより、内部の回転型電気部品を動作させるという方法が採用されている。この場合、操作つまみはハウジングに設けられた円形の開口内を回転し、この回転力が操作つまみの中央に設けた連結軸を介して回転型電気部品の回転軸に伝達されるようになっている。
【０００３】
【発明が解決しようとする課題】
ところで、近年、ユーザから目視されるハウジングの外観を向上させるために、ハウジングの開口と操作つまみとの間のクリアランスをできるだけ小さくする傾向にあるが、このように開口と操作つまみ間のクリアランスが小さくなると、操作つまみの径方向への移動が開口の内周面によって規制されることになる。このため、プリント基板をハウジングに固定した際の取付誤差等に起因して、プリント基板上に実装された回転型電気部品とハウジングに位置規制された操作つまみの相対位置がずれると、操作つまみがずれ方向へ偏倚して開口の内周面に圧接されてしまい、操作つまみの操作感触が極端に悪化するという問題がある。そこで従来は、回転型電気部品の端子をプリント基板の端子挿入孔に差し込んだ状態でプリント基板とハウジングを固定し、端子挿入孔と端子間のクリアランスを利用して回転型電気部品の回転軸に操作つまみの連結軸を取付けた後、端子挿入孔から突出する端子をプリント基板の裏面のランドに手半田しており、このことが組立作業性を低下させる大きな要因となっていた。
【０００４】
【課題を解決するための手段】
本発明は、操作つまみの円筒部がハウジングの開口をガイド部として回転摺動すると共に、この円筒部の内周面から中心部に向かう複数本の撓み片の交点に連結軸を突設し、この連結軸の自由端側をプリント基板上に実装された回転型電気部品の回転軸に係合することとする。このように構成すると、ハウジングの開口によって径方向への移動が規制された操作つまみとプリント基板上に実装された回転型電気部品との相対位置にずれを生じた場合でも、このずれは連結軸が撓み片との接続部分を支点として揺動することで吸収されるため、操作つまみの操作感触が劣化することを回避できるばかりでなく、回転型電気部品を予めプリント基板上に実装した状態で組立作業を行えるという利点もある。
【０００５】
【発明の実施の形態】
本発明による回転型電気部品の操作機構では、プリント基板上に実装された回転型電気部品と、この回転型電気部品の回転軸を回動操作する合成樹脂製の操作つまみと、この操作つまみを回転方向にガイドするハウジングとを備え、前記操作つまみは前記ハウジングに穿設された円形の開口をガイド部として回転摺動する円筒部を有し、この円筒部の内周面から中心部に向かって複数本の撓み片を一体成形すると共に、これら撓み片の交点から突出する連結軸を一体成形し、この連結軸の自由端側を前記回転型電気部品の回転軸に係合することにより、前記操作つまみの回転力が前記撓み片と前記連結軸を介して前記回転軸に伝達されるように構成した。
【０００６】
前記操作つまみは一体成形品でも良いが、スナップアクション等を用いて前記ハウジングに回転可能に支持される第１の操作体と、この第１の操作体に冠着される第２の操作体とで操作つまみを構成することが好ましい。特に、前記ハウジングにその前面を開放した円筒状の凹部を設け、この凹部の底面に前記開口を穿設した場合、前記撓み片や連結軸を含む円筒部を前記第１の操作体に設けると共に、この第１の操作体に一体化された前記第２の操作体の外周面と前記凹部の内周面との間にクリアランスを確保すると、第１および第２の操作体をいずれもスライドコアを用いることなく簡単に成形することができ、しかも、第１の操作体をハウジングに組み付けた状態でプリント基板とハウジングを一体化することができるため、組立作業性がより向上する。
【０００７】
【実施例】
実施例について図面を参照して説明すると、図１は実施例に係る回転型電気部品の操作機構を示す要部断面図、図２は該操作機構に備えられる主要部品の分解斜視図である。
【０００８】
これらの図において、符号１はプリント基板を示し、このプリント基板１上には回転型電気部品である偏平タイプのロータリスイッチ２や図示せぬ他の電気部品が半田付けによって実装されている。ロータリスイッチ２の内部機構は図示省略してあるが、このロータリスイッチ２は筐体の天面に露出する回転軸３を有し、この回転軸３を回動操作することによって接点が切り換わる公知のものである。プリント基板１の上方に配置されているのはハウジング４であり、これらプリント基板１とハウジング４は直接または任意部材を介してねじ止め等の手段で固定されている。ハウジング４には円筒状の凹部５が設けられており、この凹部５の底面に円形の開口６が穿設されている。また、ハウジング４には化粧パネル７が被着されており、この化粧パネル７には開口６と同径の孔８が穿設されている。
【０００９】
符号９は合成樹脂製の第１の操作体を示し、この第１の操作体９には、周縁に多数のクリック溝１０ａを有するカム部１０と、カム部１０から上方へ突出する円筒部１１と、円筒部１１の内周面から中心に向かって十字状に延びる４本の撓み片１２と、各撓み片１２の交点から鉛直方向真下へ延びる連結軸１３とが一体成形されており、連結軸１３の上端は各撓み片１２を介して円筒部１１の内周面に繋がれている。円筒部１１の外周面には複数のスナップ爪１１ａが形成されており、円筒部１１をハウジング４の裏側から開口６に挿入し、各スナップ爪１１ａを開口６の周縁に係止させることにより、第１の操作体９は開口６をガイド部としてハウジング４に回転自在に取り付けられている。この取り付け状態において、カム部１０のクリック溝１０ａには図示せぬクリックばねが弾接され、第１の操作体９の回転に伴ってクリック感が生起されるようになっている。また、連結軸１３の下端には断面小判形の係合部１３ａが形成されており、この係合部１３ａは前記ロータリスイッチ２の回転軸３に形成された断面小判形の係合孔３ａに挿入されている。
【００１０】
符号１４は合成樹脂製の第２の操作体を示し、この第２の操作体１４には、円筒状の結合部１５と、結合部１５の天面から上方へ突出するつまみ部１６とが一体成形されている。そして、結合部１５を前記円筒部１１に対して圧入やスナップアクション等の固定することにより、第１の操作体９と第２の操作体１４は一体化されて操作つまみを構成している。図１から明らかなように、凹部５の内周面と結合部１５の外周面との間にはクリアランスが確保されており、このクリアランスにより第２の操作体１４はハウジング４に対して非接触状態で回転するようになっている。
【００１１】
次に、上記実施例の組立作業について説明する。この場合、予めプリント基板１上の所定位置にロータリスイッチ２を半田付けすると共に、ハウジング４の開口６に第１の操作体９を回転自在に取り付けておき、この状態で、プリント基板１をハウジング４に適宜手段で固定して、第１の操作体９の係合部１３ａをロータリスイッチ２の係合孔３ａに挿入する。この時、取付誤差等に起因して回転軸３と連結軸１３の軸芯（センター）がずれたとしても、剛性の弱い各撓み片１２によって繋がれた連結軸１３がその上端側を支点として揺動できるようになっているため、連結軸１３の揺動によって上記センターずれは吸収される。しかる後、開口６内に露出する円筒部１１に結合部１５を嵌め込んで第１の操作体９と第２の操作体１４を一体化し、ハウジング４に化粧パネル７を被着することにより、図１に示す組立完了状態となる。
【００１２】
使用に際し、ユーザの手指で第２の操作体１４のつまみ部１６を摘んで回転操作すると、第２の操作体１４は凹部５内を非接触状態で回転するが、第２の操作体１４に一体化された第１の操作体９の円筒部１１がハウジング４の開口６をガイド部として摺動回転し、この回転力が円筒部１１から各撓み片１２と連結軸１３を介して回転軸３に伝達されるため、この回転軸３の回転に伴ってロータリスイッチ２の接点が切り換わる。この場合、前述したように、各撓み片１２が変形することで連結軸１３と回転軸３のセンターずれは吸収されているため、第１の操作体９の円筒部１１は開口６に沿ってスムーズに回転し、操作つまみ（第１の操作体９と第２の操作体１４）の操作感触は良好な状態に維持される。
【００１３】
図３に示す実施例では、波状に形成した各撓み片１２を介して連結軸１３の上端と円筒部１１の内周面を繋いでおり、各撓み片１２の実質的なバネスパンを長くして変形し易くしている。
【００１４】
なお、上記実施例では、回転型電気部品の一例として偏平タイプのロータリスイッチを挙げて説明したが、本発明がロータリボリュームやロータリエンコーダ等の他の回転型電気部品に適用できるのはいうまでもなく、回転軸が筐体の天面から突出するタイプの回転型電気部品にも適用することができる。
【００１５】
さらに、上記実施例では、第１の操作体９の円筒部１１と連結軸１３とを４本の撓み片１２で繋いだ場合について説明したが、撓み片１２の本数や形状は上記実施例に限定されるものではなく、必要に応じて適宜変更可能である。
【００１６】
【発明の効果】
本発明は、以上説明したような形態で実施され、以下に記載されるような効果を奏する。
【００１７】
プリント基板上に実装された回転型電気部品と、この回転型電気部品の回転軸を回動操作する合成樹脂製の操作つまみと、この操作つまみを回転方向にガイドするハウジングとを備え、前記操作つまみは前記ハウジングに穿設された円形の開口をガイド部として回転摺動する円筒部を有し、この円筒部の内周面から中心部に向かって複数本の撓み片を一体成形すると共に、これら撓み片の交点から突出する連結軸を一体成形し、この連結軸の自由端側を前記回転型電気部品の回転軸に係合することにより、前記操作つまみの回転力が前記撓み片と前記連結軸を介して前記回転軸に伝達されるように構成すると、ハウジングの開口によって径方向への移動が規制された操作つまみとプリント基板上に実装された回転型電気部品との相対位置にずれを生じた場合でも、このずれは連結軸が撓み片との接続部分を支点として揺動することで吸収されるため、操作つまみの操作感触が劣化することを回避できるばかりでなく、回転型電気部品を予めプリント基板上に実装した状態で組立作業を行えるという利点もある。
【００１８】
また、ハウジングに前面を開放した円筒状の凹部が設けられていると共に、この凹部の底面にガイド部としての開口が穿設されており、この開口に挿入される円筒部を有して前記ハウジングに回転可能に支持される第１の操作体と、円筒部に冠着されて第１の操作体に一体化される第２の操作体とで前記操作つまみを構成し、前記凹部の内周面と前記第２の操作体の外周面との間にクリアランスが確保されるようにすると、第１および第２の操作体をいずれもスライドコアを用いることなく簡単に成形することができ、しかも、第１の操作体をハウジングに組み付けた状態でプリント基板とハウジングを一体化することができるため、組立作業性がより向上する。
【図面の簡単な説明】
【図１】実施例に係る回転型電気部品の操作機構を示す要部断面図である。
【図２】該操作機構に備えられる主要部品の分解斜視図である。
【図３】他の実施例に係る回転型電気部品の操作機構に備えられる主要部品の分解斜視図である。
【符号の説明】
１ プリント基板
２ ロータリスイッチ（回転型電気部品）
３ 回転軸
３ａ 係合孔
４ ハウジング
５ 凹部
６ 開口
９ 第１の操作体
１１ 円筒部
１１ａ スナップ爪
１２ 撓み片
１３ 連結軸
１３ａ 係合部
１４ 第２の操作体
１５ 結合部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a rotary electric component operating mechanism that operates a rotary electric component such as a rotary switch or a rotary volume by rotating an operation knob.
[0002]
[Prior art]
The rotary electrical component is mounted on a printed circuit board at the time of incorporation into various devices, but usually an operation knob is attached to the rotary shaft. As an example, in an in-vehicle air conditioner, an operation knob is exposed from a housing (exterior panel) that covers a printed circuit board, and the operation knob is rotated by a user's finger to operate an internal rotary electrical component. The method is adopted. In this case, the operation knob rotates in a circular opening provided in the housing, and this rotational force is transmitted to the rotation shaft of the rotary electric component via the connecting shaft provided in the center of the operation knob. Yes.
[0003]
[Problems to be solved by the invention]
By the way, in recent years, in order to improve the appearance of the housing as seen by the user, the clearance between the opening of the housing and the operation knob has tended to be as small as possible. In this way, the clearance between the opening and the operation knob is small. Then, the movement of the operation knob in the radial direction is restricted by the inner peripheral surface of the opening. For this reason, if the relative position of the rotary electric component mounted on the printed circuit board and the operation knob regulated by the housing shifts due to an installation error when the printed circuit board is fixed to the housing, the operation knob is moved. There is a problem that the operation feeling of the operation knob is extremely deteriorated because it is biased in the displacement direction and is pressed against the inner peripheral surface of the opening. Therefore, conventionally, the printed circuit board and the housing are fixed in a state where the terminals of the rotary electrical component are inserted into the terminal insertion holes of the printed circuit board, and the rotational axis of the rotary electrical component is used by utilizing the clearance between the terminal insertion hole and the terminal. After the connecting shaft of the operation knob is attached, the terminal protruding from the terminal insertion hole is manually soldered to the land on the back surface of the printed circuit board, which is a major factor that deteriorates the assembly workability.
[0004]
[Means for Solving the Problems]
In the present invention, the cylindrical portion of the operation knob rotates and slides with the opening of the housing as a guide portion, and a connecting shaft protrudes from the intersection of a plurality of bending pieces from the inner peripheral surface of the cylindrical portion toward the center portion , The free end side of the connecting shaft is engaged with the rotating shaft of the rotating electrical component mounted on the printed circuit board. With this configuration, even when a relative position between the operation knob whose movement in the radial direction is restricted by the opening of the housing and the rotary electrical component mounted on the printed circuit board is shifted, this shift is not caused by the connecting shaft. Is absorbed by swinging with the connection part with the flexure piece as a fulcrum, not only can the operation feel of the operation knob be prevented from being deteriorated, but also in a state where the rotary electrical component is mounted on the printed circuit board in advance. There is also an advantage that assembly work can be performed.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
In the operating mechanism of the rotating electrical component according to the present invention, the rotating electrical component mounted on the printed circuit board, the synthetic resin operating knob for rotating the rotating shaft of the rotating electrical component, and the operating knob A housing that guides in a rotational direction, and the operation knob has a cylindrical portion that rotates and slides with a circular opening formed in the housing as a guide portion, and extends from an inner peripheral surface of the cylindrical portion toward a central portion. while integrally molding a plurality of deforming pieces, by integrally molding a connecting shaft projecting from the intersection of these deforming pieces, engaging the free end of the connecting shaft to the rotary shaft of the rotary electric part Te, The rotational force of the operation knob is configured to be transmitted to the rotary shaft through the bending piece and the connecting shaft .
[0006]
The operation knob may be an integrally molded product, but a first operation body that is rotatably supported by the housing using a snap action or the like, and a second operation body that is attached to the first operation body. It is preferable to constitute an operation knob . In particular, when the housing is provided with a cylindrical recess having its front surface opened, and the opening is formed in the bottom surface of the recess, the cylindrical portion including the bending piece and the connecting shaft is provided in the first operating body. When a clearance is secured between the outer peripheral surface of the second operating body integrated with the first operating body and the inner peripheral surface of the recess , both the first and second operating bodies are slide cores. In addition, since the printed circuit board and the housing can be integrated with the first operation body assembled to the housing, the assembling workability is further improved.
[0007]
【Example】
The embodiment will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a main part showing an operation mechanism of a rotating electrical component according to the embodiment, and FIG. 2 is an exploded perspective view of main components provided in the operation mechanism.
[0008]
In these drawings, reference numeral 1 denotes a printed circuit board, and a flat type rotary switch 2 which is a rotary electric component and other electric components (not shown) are mounted on the printed circuit board 1 by soldering. Although the internal mechanism of the rotary switch 2 is not shown, the rotary switch 2 has a rotating shaft 3 exposed on the top surface of the casing, and the contact is switched by rotating the rotating shaft 3. belongs to. Arranged above the printed circuit board 1 is a housing 4, and the printed circuit board 1 and the housing 4 are fixed by means such as screwing directly or via an arbitrary member. The housing 4 is provided with a cylindrical recess 5, and a circular opening 6 is formed in the bottom surface of the recess 5. A decorative panel 7 is attached to the housing 4, and a hole 8 having the same diameter as the opening 6 is formed in the decorative panel 7.
[0009]
Reference numeral 9 denotes a first operating body made of synthetic resin. The first operating body 9 includes a cam portion 10 having a large number of click grooves 10 a on the periphery, and a cylindrical portion 11 protruding upward from the cam portion 10. And four bending pieces 12 extending in a cross shape from the inner peripheral surface of the cylindrical portion 11 toward the center, and a connecting shaft 13 extending vertically below the intersection of the respective bending pieces 12 are integrally formed. The upper end of the shaft 13 is connected to the inner peripheral surface of the cylindrical portion 11 via each bending piece 12. A plurality of snap claws 11 a are formed on the outer peripheral surface of the cylindrical portion 11. The cylindrical portion 11 is inserted into the opening 6 from the back side of the housing 4, and each snap claw 11 a is locked to the periphery of the opening 6. The first operating body 9 is rotatably attached to the housing 4 with the opening 6 as a guide portion. In this attached state, a click spring (not shown) is elastically contacted with the click groove 10 a of the cam portion 10, and a click feeling is generated as the first operating body 9 rotates. An engaging portion 13a having an oval cross section is formed at the lower end of the connecting shaft 13. The engaging portion 13a is formed in an engaging hole 3a having an oval cross section formed on the rotary shaft 3 of the rotary switch 2. Has been inserted.
[0010]
Reference numeral 14 denotes a second operation body made of synthetic resin, and the second operation body 14 is integrally formed with a cylindrical coupling portion 15 and a knob portion 16 protruding upward from the top surface of the coupling portion 15. Molded. Then, by fixing the coupling portion 15 to the cylindrical portion 11 by press-fitting, snap action or the like, the first operating body 9 and the second operating body 14 are integrated to form an operating knob. As is clear from FIG. 1, a clearance is secured between the inner peripheral surface of the recess 5 and the outer peripheral surface of the coupling portion 15, and the second operating body 14 is not in contact with the housing 4 by this clearance. It is designed to rotate in the state.
[0011]
Next, the assembly work of the above embodiment will be described. In this case, the rotary switch 2 is soldered to a predetermined position on the printed circuit board 1 in advance, and the first operating body 9 is rotatably attached to the opening 6 of the housing 4. In this state, the printed circuit board 1 is attached to the housing. 4 is appropriately fixed by means, and the engaging portion 13a of the first operating body 9 is inserted into the engaging hole 3a of the rotary switch 2. At this time, even if the axis (center) of the rotating shaft 3 and the connecting shaft 13 is displaced due to an attachment error or the like, the connecting shaft 13 connected by each of the bending pieces 12 having low rigidity has the upper end side as a fulcrum. Since it can swing, the center shift is absorbed by the swing of the connecting shaft 13. Thereafter, the coupling portion 15 is fitted into the cylindrical portion 11 exposed in the opening 6 to integrate the first operating body 9 and the second operating body 14, and the decorative panel 7 is attached to the housing 4. The assembly is completed as shown in FIG.
[0012]
In use, when the knob portion 16 of the second operation body 14 is picked and rotated by the user's fingers, the second operation body 14 rotates in a non-contact state in the recess 5. The cylindrical portion 11 of the integrated first operating body 9 slides and rotates with the opening 6 of the housing 4 as a guide portion, and this rotational force is rotated from the cylindrical portion 11 through the bending pieces 12 and the connecting shaft 13 to the rotating shaft. 3, the contact of the rotary switch 2 is switched as the rotary shaft 3 rotates. In this case, as described above, since the center shift between the connecting shaft 13 and the rotating shaft 3 is absorbed by the deformation of each bending piece 12, the cylindrical portion 11 of the first operating body 9 extends along the opening 6. The operation knobs (first operating body 9 and second operating body 14) rotate smoothly, and the operation feel is maintained in a good state.
[0013]
In the embodiment shown in FIG. 3, the upper end of the connecting shaft 13 and the inner peripheral surface of the cylindrical portion 11 are connected to each other through the bending pieces 12 formed in a wave shape, and the substantial spring span of each bending piece 12 is lengthened. It is easy to deform.
[0014]
In the above embodiment, a flat type rotary switch has been described as an example of a rotary electric component. However, it goes without saying that the present invention can be applied to other rotary electric components such as a rotary volume and a rotary encoder. In addition, the present invention can also be applied to a rotary electric component of a type in which the rotating shaft protrudes from the top surface of the housing.
[0015]
Furthermore, although the said Example demonstrated the case where the cylindrical part 11 of the 1st operation body 9 and the connection shaft 13 were connected with the four bending pieces 12, the number and shape of the bending pieces 12 are in the said Example. It is not limited and can be changed as needed.
[0016]
【The invention's effect】
The present invention is implemented in the form as described above, and has the following effects.
[0017]
A rotating electrical component mounted on a printed circuit board; a synthetic resin operating knob that rotates the rotating shaft of the rotating electrical component; and a housing that guides the operating knob in the rotational direction. The knob has a cylindrical portion that rotates and slides with a circular opening formed in the housing as a guide portion, and integrally forms a plurality of bending pieces from the inner peripheral surface of the cylindrical portion toward the center portion , A connecting shaft protruding from the intersection of these bending pieces is integrally formed, and the free end of this connecting shaft is engaged with the rotating shaft of the rotary electrical component , whereby the rotational force of the operation knob is applied to the bending piece and the bending piece. configured to be transmitted to the rotary shaft via a connecting shaft Then, without the relative position of the rotary electric part which moves in the radial direction by the opening of the housing is mounted to have been operated knob and the printed board regulatory Even if this occurs, this shift is absorbed by the swinging of the connecting shaft with the connecting portion with the flexure piece as a fulcrum. There is also an advantage that the assembly work can be performed in a state where the components are mounted on the printed circuit board in advance.
[0018]
The housing is provided with a cylindrical recess having a front surface open, and an opening as a guide portion is formed in the bottom surface of the recess, and the housing has a cylindrical portion inserted into the opening. rotatably the first operating body supported, configure the operating knob in a second operating body which is integrated in the first operating body is capped on the cylindrical portion, an inner periphery of said recess If a clearance is ensured between the surface and the outer peripheral surface of the second operating body, both the first and second operating bodies can be easily formed without using a slide core, Since the printed circuit board and the housing can be integrated with the first operating body assembled to the housing, the assembly workability is further improved.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a main part showing an operating mechanism of a rotary electric component according to an embodiment.
FIG. 2 is an exploded perspective view of main components provided in the operation mechanism.
FIG. 3 is an exploded perspective view of main components provided in an operating mechanism for a rotary electrical component according to another embodiment.
[Explanation of symbols]
1 Printed circuit board 2 Rotary switch (rotary electrical parts)
DESCRIPTION OF SYMBOLS 3 Rotating shaft 3a Engagement hole 4 Housing 5 Recess 6 Opening 9 1st operation body 11 Cylindrical part 11a Snap claw 12 Bending piece 13 Connection shaft 13a Engagement part 14 2nd operation body 15 Connection part

Claims (2)

プリント基板上に実装された回転型電気部品と、この回転型電気部品の回転軸を回動操作する合成樹脂製の操作つまみと、この操作つまみを回転方向にガイドするハウジングとを備え、
前記操作つまみは前記ハウジングに穿設された円形の開口をガイド部として回転摺動する円筒部を有し、この円筒部の内周面から中心部に向かって複数本の撓み片を一体成形すると共に、これら撓み片の交点から突出する連結軸を一体成形し、この連結軸の自由端側を前記回転型電気部品の回転軸に係合することにより、前記操作つまみの回転力が前記撓み片と前記連結軸を介して前記回転軸に伝達されるように構成したことを特徴とする回転型電気部品の操作機構。A rotary electrical component mounted on a printed circuit board, a synthetic resin operation knob for rotating the rotation shaft of the rotary electrical component, and a housing for guiding the operation knob in the rotational direction.
The operation knob has a cylindrical portion that rotates and slides using a circular opening formed in the housing as a guide portion, and a plurality of flexure pieces are integrally formed from the inner peripheral surface of the cylindrical portion toward the center portion. In addition, the connecting shaft protruding from the intersection of the bending pieces is integrally formed, and the free end side of the connecting shaft is engaged with the rotating shaft of the rotary electrical component , whereby the rotational force of the operation knob is applied to the bending piece. And an operating mechanism for a rotary electric component, wherein the operating mechanism is transmitted to the rotary shaft via the connecting shaft . 請求項１の記載において、前記ハウジングに前面を開放した円筒状の凹部が設けられていると共に、この凹部の底面に前記開口が穿設されており、前記操作つまみが、前記円筒部を有して前記ハウジングに回転可能に支持された第１の操作体と、前記円筒部に冠着されて前記第１の操作体に一体化された第２の操作体とで構成され、前記凹部の内周面と前記第２の操作体の外周面との間にクリアランスが確保されていることを特徴とする回転型電気部品の操作機構。The cylindrical recess having an open front surface is provided in the housing according to claim 1, and the opening is formed in a bottom surface of the recess, and the operation knob includes the cylindrical portion. A first operating body rotatably supported by the housing, and a second operating body that is crowned on the cylindrical portion and integrated with the first operating body . An operating mechanism for a rotary electric component , wherein a clearance is secured between a peripheral surface and an outer peripheral surface of the second operating body .
JP31217397A 1997-11-13 1997-11-13 Operation mechanism of rotating electrical parts Expired - Fee Related JP3734353B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP31217397A JP3734353B2 (en) 1997-11-13 1997-11-13 Operation mechanism of rotating electrical parts
EP19980308697 EP0917170B1 (en) 1997-11-13 1998-10-23 Operating mechanism of rotary electric component

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31217397A JP3734353B2 (en) 1997-11-13 1997-11-13 Operation mechanism of rotating electrical parts

Publications (2)

Publication Number Publication Date
JPH11144564A JPH11144564A (en) 1999-05-28
JP3734353B2 true JP3734353B2 (en) 2006-01-11

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JP31217397A Expired - Fee Related JP3734353B2 (en) 1997-11-13 1997-11-13 Operation mechanism of rotating electrical parts

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DE10233215A1 (en) * 2002-07-22 2004-02-26 BSH Bosch und Siemens Hausgeräte GmbH Rotary switch device and support element of the same
DE20314364U1 (en) 2003-09-16 2004-02-26 Trw Automotive Electronics & Components Gmbh & Co. Kg Rotary switch in a motor vehicle
JP4047832B2 (en) 2004-04-16 2008-02-13 Ｎｅｃディスプレイソリューションズ株式会社 Rotation operation mechanism, electronic equipment, projector
JP2008028003A (en) * 2006-07-19 2008-02-07 Alps Electric Co Ltd Rotating electrical component
FR2913143A1 (en) * 2007-02-27 2008-08-29 Schneider Electric Ind Sas Rotary adjustment component e.g. potentiometer, control device for electronic card, has cover including hole with circumference that is designed to lock activation unit in cover that is inserted in its groove and turn around its rod
KR100993785B1 (en) * 2008-04-30 2010-11-12 이문재 Cam switch of switch knob
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FR3001100B1 (en) * 2013-01-17 2017-01-20 Delphi Tech Inc CONTROL DEVICE WITH CAPACITIVE DETECTION.
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EP0917170A2 (en) 1999-05-19
EP0917170A3 (en) 1999-07-21
EP0917170B1 (en) 2004-10-06

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