JP4071545B2 - Slide type electrical parts - Google Patents

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JP4071545B2
JP4071545B2 JP2002152623A JP2002152623A JP4071545B2 JP 4071545 B2 JP4071545 B2 JP 4071545B2 JP 2002152623 A JP2002152623 A JP 2002152623A JP 2002152623 A JP2002152623 A JP 2002152623A JP 4071545 B2 JP4071545 B2 JP 4071545B2
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pair
spring
operation member
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slide
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JP2003346602A (en
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暁寿 野村
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Alps Alpine Co Ltd
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Alps Electric Co Ltd
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Priority to CNB031383432A priority patent/CN1230849C/en
Priority to TW092114278A priority patent/TWI225657B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/08—Warming pads, pans or mats; Hot-water bottles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/0102—Orthopaedic devices, e.g. splints, casts or braces specially adapted for correcting deformities of the limbs or for supporting them; Ortheses, e.g. with articulations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01—Orthopaedic devices, e.g. splints, casts or braces
    • A61F5/04—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints
    • A61F5/042—Devices for stretching or reducing fractured limbs; Devices for distractions; Splints for extension or stretching
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/007—Heating or cooling appliances for medical or therapeutic treatment of the human body characterised by electric heating
    • A61F2007/0077—Details of power supply
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F2007/0225—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof
    • A61F2007/0228—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof with belt or strap, e.g. with buckle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/02—Compresses or poultices for effecting heating or cooling
    • A61F2007/0225—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof
    • A61F2007/0233—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof connected to or incorporated in clothing or garments
    • A61F2007/0236—Compresses or poultices for effecting heating or cooling connected to the body or a part thereof connected to or incorporated in clothing or garments for the lower part of the trunk, e.g. panty

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Nursing (AREA)
  • Slide Switches (AREA)
  • Adjustable Resistors (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、スライド型電気部品に係り、特にビデオカメラなどの電子機器のズームコントロールなどに使用される中立位置にセンター復帰するタイプのスライド型電気部品の構造に関する。
【０００２】
【従来の技術】
従来のスライド型電気部品の構造を図１２及び図１３に示す。図１２は要部縦断面図、図１３は要部横断面図である。
【０００３】
従来のスライド型電気部品の構造としては、金属板などを折り曲げることにより箱形に形成されたケース２１と、このケース２１の内部に移動可能に収納された合成樹脂などの絶縁材からなる操作部材を構成するスライド体２２と、このスライド体２２の両側に設けられてスライド体２２を中立位置に付勢する一対の復帰ばね２３、２３と、前記スライド体２２に保持されスライド体２２と共に移動される導電材からなる接触片２４と、この接触片２４と接離される固定端子２５が固着され、前記ケース２１の下面に取り付けられた絶縁基板２６とから構成されている。
【０００４】
ケース２１の上面板には、スライド体２２の操作つまみ２２ａが突出されてスライド移動される方形孔２１ａが形成されており、この方形孔２１ａの移動方向の相対向する両辺部には、ケース２１の内方に一体に折り曲げられたばね係止片２１ｂ、２１ｂが形成されている。このばね係止片２１ｂ、２１ｂと前記ケース２１の両内側面とのそれぞれの間に前記一対の復帰ばね２３、２３がそれぞれ係止されている。
【０００５】
スライド体２２の上面中央には、方形孔２１ａから外部に突出される操作つまみ２２ａが突設されており、この操作つまみ２２ａを挟んで上面両側には、両側面部よりスライド移動方向に前記復帰ばね２３の逃げ部としてのやや大きめのばね逃げ溝２２ｂ、２２ｂが形成され、更にこのばね逃げ溝２２ｂ、２２ｂに連続して前記スライド体２２がスライド移動した際の前記ばね係止片２１ｂ、２１ｂの逃げ部としてのやや小さめの係止片逃げ溝２２ｃ、２２ｃが形成されている。
【０００６】
そして、ばね逃げ溝２２ｂと係止片逃げ溝２２ｃとの連接部に段部２２ｄが形成されると共に、スライド体２２の両段部２２ｄ、２２ｄに一対の復帰ばね２３の一端がそれぞれ当接することにより、スライド体２２をケース２１の中央位置に付勢するようになっている。また、スライド体２２がスライド移動される際には、段部２２ｄにより復帰ばね２３を押圧して圧縮しながら、前記スライド体２２はスライド方向に移動される。この時、前記ばね係止片２１ｂが前記スライド体２２の係止片逃げ溝２２ｃに挿通されることにより、前記スライド体２２のスライド移動が妨げられることなく確実に移動できるものとなっている。
【０００７】
スライド型電気部品の動作としては、前記復帰ばね２３の付勢力に抗して、前記操作つまみ２２ａを図１２の左右の何れかの方向に押圧すると、接触片２４もともに移動して接触片２４が固定端子２５と接離することで回路が切り換えられるものとなる。また、この状態から操作つまみ２２ａへの押圧を解除すれば、前記復帰ばね２３の付勢力で操作つまみ２２ａは元の中央位置の状態に復帰するものとなっている。
【０００８】
【発明が解決しようとする課題】
しかしながら、上述した従来のスライド型電気部品の構造においては、一対の復帰ばね２３、２３でスライド体２２の段部２２ｄを押圧し、ばね係止片２１ｂに当接する中立位置に復帰させ、中立位置で保持させるものであるが、段部２２ｄ間の長さとばね係止片２１ｂ間の長さが異なる場合がある。段部２２ｄ間の長さの方がばね係止片２１ｂ間の長さより長く、また、復帰ばね自体のバラツキによるバネ力のバラツキや、ばね係止片２１ｂの折り曲げ精度の誤差による収納された復帰ばね長の不均一によるバネ力の大きさバラツキやバネ力の方向のバラツキが生じていると、これにより、スライド体２２（操作つまみ２２ａ）の中立位置への復帰精度が悪化するものであった。また、段部２２ｄ間の長さがばね係止片２１ｂ間の長さより短いと、これにより中立位置におけるスライド体２２のガタツキが生じていた。
【０００９】
したがって、本発明では上述した問題点を解決し、中立位置への復帰精度が高められたセルフリターンタイプのスライド型電気部品を提供することを目的とする。
【００１０】
【課題を解決するための手段】
上記課題を解決するために本発明では第１の手段として、スライド移動可能であって摺動子片あるいは導電パターンの一方を設けた操作部材と、前記操作部材のスライド移動をガイドするケースと、前記操作部材を挟んで一対設けられ、前記操作部材側の一端部が前記操作部材及び前記ケースに位置決めされ、他端部が前記ケースに当接して配置され、前記操作部材のスライド移動方向に圧縮可能に配置された弾性部材とを有するスライド型電気部品であって、前記弾性部材によって、前記操作部材が前記スライド移動方向と直交する方向に移動させられ、前記弾性部材を一対のコイルバネで形成し、前記一対のコイルバネをハの字形状に配置するとともに、前記ケースには前記一対のコイルバネを収納するハの字形状の一対のばね収納部をそれぞれ直線状に形成しており、前記ばね収納部には前記コイルバネの両端部を位置決めする一対の壁部を有し、前記一対のばね収納部が対向する前記壁部間の距離が、前記操作部材が前記コイルバネのバネ力によって前記スライド移動方向と直交する方向に移動させられる側の方に行くに従って長くなるように前記壁部を傾斜させてあり、前記一対のコイルバネが対向して配置される一端側の前記壁部と前記コイルバネの一端部との間にスペーサーをそれぞれ介在させ、前記操作部材には、前記スペーサー間に配置されて両端が前記スペーサーにそれぞれ当接する突起部を形成し、前記操作部材の前記スライド移動は弧状であることを特徴とする。
【００１１】
また、第２の手段として、第１の手段において、前記一対のばね収納部の対向する前記壁部間には、両方のばね収納部を連結するように前記ばね収納部より幅狭の連結溝部が形成されており、前記連結溝部に連続して前記ばね収納部の対向する前記一対の壁部間に前記連結溝部と同じ大きさで連続して摺動溝部が形成されるとともに前記摺動溝部と前記連結溝部とは円弧状に形成されており、前記円弧状の前記連結溝部と前記摺動溝部に前記操作部材の突起部が摺動案内されると共に、前記突起部の両端部が外方に突出する曲面状に形成されていることを特徴とする。
【００１２】
また、第３の手段として、第２の手段において、前記ケースには、前記連結溝部と前記摺動溝部の円弧状と同一中心点を持つ円弧状の長溝からなるガイド溝部が形成されており、前記操作部材には、前記ガイド溝部に摺動案内される円弧状のガイド突部が形成されていることを特徴とする。
【００１７】
【発明の実施の形態】
以下、本発明の実施例を図１乃至図７に示す。図１はスライド型電気部品の基台と摺動子片を取り除いた操作部材と復帰ばねの係合状態を示す平面図、図２はスライド型電気部品の縦断而図、図３は操作部材の動作状態を示す説明図、図４はケースの平面図、図５は同じく縦断面図、図６は操作部材の底面図、図７は同じく縦断面図である。
【００１８】
尚、図１、図３においては、操作部材と復帰ばねとの係合、及び動作状態が良く分かるように、便宜的に操作部材と復帰ばねとを重ねて透視した状態で示している。
【００１９】
図において、ケース１は、合成樹脂などの絶縁材で上面及び正面が開口された有底の箱状に形成されており、中央には横長状の収納部１ａが形成され、この収納部１ａの上側には同じく横長状の開口部１ｂが形成されている。また、前記ケース１の上面は、なだらかな円弧状に形成されており、前記開口部１ｂの上面もこれに沿って円弧状に形成されている。
【００２０】
前記収納部１ａの内側面の略中央両側には、概略ケース１の上面の円弧と同じ中心を持つ円弧に沿ってやや傾斜した状態（ハの字形状配置）の長溝からなる一対のばね収納部１ｃ、１ｃが形成されており、このばね収納部１ｃの長手方向の対向する内側面が後述する復帰ばね（弾性部材）２の両端部を位置決めする壁部１ｄ、１ｄとなっている。また、前記一対のばね収納部１ｃ、１ｃの間には、両方を連結するように前記ばね収納部１ｃよりやや幅狭で深底の連結溝部１ｅが形成されており、また、この連結溝部１ｅに連続して前記ばね収納部１ｃの対向する一対の前記壁部１ｄ、１ｄの間に、後述する駆動体部４ａの突起部４ｄを摺動案内する摺動溝部１ｆ、１ｆが形成されている。
【００２１】
この場合、前記連結溝部１ｅと摺動溝部１ｆ、１ｆとは同じ大きさで連続されて形成されており、かつ、前記ばね収納部１ｃが直線状に形成されているのに対して、前記開口部１ｂの上面の円弧状と同一中心点を持つ円弧状に形成されている。
【００２２】
また、収納部１ａの内底面寄りの側面には、前記開口部１ｂの上面の円弧状と同一中心点を持つ円弧状の長溝からなるガイド溝部１ｇが形成されている。このガイド溝部１ｇ及び摺動溝部１ｆに後述する操作部材４の駆動体部４ａに設けられたガイド突部４ｅ及び突起部４ｄが案内され摺動することにより、操作部材４が円弧に沿ってスライド移動されるものとなっている。但し、両者の間には所定のクリアランスが形成されている。
【００２３】
前記ケース１の一対のばね収納部１ｃ、１ｃには、コイル状に巻回された金属線材からなる一対の復帰ばね２、２が収納保持されている。この場合、ばね収納部１ｃの対向する壁部１ｄ、１ｄに復帰ばね２の両端部が圧縮して当接しており、これにより復帰ばね２の両端部が位置決めされることで、復帰ばね２がばね収納部１ｃ内に保持されるものとなっている。また、一対の復帰ばね２、２が対向して配置されている一端側の壁部１ｄ、１ｄには、ゴムなどの弾性を有する材料からなるスペーサー３がそれぞれ配設されて、したがって、一対の復帰ばね２、２の一端側はスペーサー３を介して壁部１ｄに圧接されている。このスペーサー３、３間には、後述する操作部材４の駆動体部４ａに設けられた突起部４ｄが挟持されており、一対の復帰ばね２、２のバネ力が伝えられて前記操作部材４が中立位置に保持されるものとなっている。
【００２４】
操作部材４は、合成樹脂などの絶縁材で形成されており、平面略方形状をした駆動体部４ａと、この駆動体部４ａの上側に設けられた円弧状の鍔部４ｂを有する操作ノブ４ｃと、復帰ばね２の一端部を受ける突起部４ｄとから形成されている。突起部４ｄは、前記駆動体部４ａの一方の側面の略中央に、図１の横方向に細長円弧状をして突出して設けられており、この突起部４ｄがケース１の連結溝部１ｅに係合されている。また、突起部４ｄの両端部は、外方に突出する曲面状に形成されており、この曲面状両端部がスペーサー３と当接することでスペーサー３を弾性変形させている。また、突起部４ｄの両端部間の距離は、その寸法がバラついた場合にも、下方に位置する壁部１ｄ間の距離より長く、上方に位置する壁部１ｄ間の距離より小さく形成されている。
【００２５】
このように、ばね収納部１ｃの連結溝部１ｅで連結された側の壁部１ｄには、復帰ばね２の他端側と当接する弾性材からなるスペーサー３が配設されており、連結溝部１ｅに係合される駆動体部４ａに設けられた突起部４ｄの両端部の曲面が、スペーサー３の他端と当接してスペーサー３を弾性変形させるように形成してあるので、操作部材４が中央位置に復帰する際に、駆動体部４ａの突起部４ｄと、復帰ばね２の端部との当接時の衝突音を抑えることが可能となっている。
【００２６】
また、突起部４ｄの下側には、平面の両端部にわたって細長円弧状をしたガイド突部４ｅが、同じく突起部４ｄの突出方向に突出して設けられており、このガイド突部４ｅが、ケース１の収納部１ａに形成されたガイド溝部１ｇに摺動可能に係合されるものとなっている。
【００２７】
突起部４ｄがケース１の収納部１ａに形成された、連結溝部１ｅと摺動溝部１ｆに係合されると共に、ガイド突部４ｅがガイド溝部１ｇに係合されて摺動案内されることにより、操作ノブ４ｃが円弧状にスライド操作されるものとなっている。この場合、駆動体部４ａの突起部４ｄが設けられた平面が収納部１ａの内底面と摺動する摺動面となっており、ガイド突部４ｅ及びガイド溝部１ｇは必ずしも必要ではなく、必要に応じて形成すればよい。
【００２８】
また、一対の復帰ばね２、２はハ字形状に配設されているため、中立位置付近において一対の復帰ばね２、２のバネ力は操作部材４の細長円弧状をした突起部４ｄの両端の稍下方から付与されることになるので、操作部材４は図１の上方に押し上げられて突起部４ｄの上面が連結溝部１ｅの上側の内面に当接するまで移動される。この際、壁部１ｄ間の距離は、上方に行くに従って長くなっているので、該操作部材４が上方に位置するのに伴い復帰ばね２、２の操作部材４側の端部は、壁部１ｄに近づくこととなる。ところで、中立位置のずれの最大の値は、所定以上のバネ力の差があった場合、突起部４ｄの長さと、壁部１ｄ間の長さの差となる。従って、復帰ばね２、２の操作部材４側の端部は、壁部１ｄに近づくこととなると、これによって左右の復帰ばね２、２のバネ力の差がある場合であっても、操作部材４の中立位置における位置ずれは少なくなる。
【００２９】
また、操作部材４が上方に位置した状態で、突起部４ｄの方が連結溝部１ｅより多少長くとも復帰ばね２、２（弾性部材）、両方がほぼ均等に弾性変形し、両方のスペーサー３、３が突起部４ｄと壁部１ｄに接した状態となり、操作部材４の中立位置は左右の復帰ばね２、２のバネ力の差があったとしてもずれない。
【００３０】
なお、十分に操作部材４が上方に移動できるようにしておけば、両方のスペーサー３、３が弾性変形することなく突起部４ｄと段部１ｄに接した状態となるまで、操作部材４は上方に移動し、操作部材４の中立位置は左右の復帰ばね２、２のバネ力の差、弾性部材の変形量の差があったとしてもずれない。
【００３１】
このように、摺動溝部１ｆを円弧状に形成し、駆動体部４ａの突起部４ｄを摺動溝部１ｆに摺動させることにより、操作ノブ４ｃを円弧状にスライド操作可能に保持するようにしてあるので、操作ノブ４ｃのスライド操作範囲を大きくできると共に、駆動体部４ａの摺動方向の寸法を小さくすることができるので、操作ノブ４ｃの操作性を確保したまま小型化が図れるものとなっている。
【００３２】
また、駆動体部４ａの対向する平面の他方には、導電性の金属材からなる摺動子片５が固着されている。この摺動子片５には、複数の片持ち状の接触片５ａが設けられており、この接触片５ａが後述する基台６に設けられた導電パターン（図示せず）と接離するものとなっている。
【００３３】
基台６は、フェノール樹脂などの積層板からなり、表面には鋼箔やカーボンなどの導電材からなる導電パターン（図示せず）が形成され、可変抵抗器の集電体及び抵抗体が形成されている。また、裏面には前記導電パターンとスルーホールなどで接続された導電性の金属板からなる外部端子７が固着されている。
【００３４】
前記基台６は、裏面側を合成樹脂などの絶縁材からなる平板状のカバー８に一体的に固着されており、前記導電パターンが前記駆動体部４ａに固着された前記摺動子片５の接触片５ａと接離するように対向されて前記ケース１に取り付けられている。尚、前記摺勤子片５と前記導電パターンを形成する場合には、前記駆動体部４ａに前記導電パターンを形成し、前記基台６に前記摺動子片５を形成するようにしてもよい。
【００３５】
上記構成のスライド型電気部品を組み立てるには、前記ケース１の一対の前記ばね収納部１ｃ、１ｃの対向する一端側の璧部１ｄ、１ｄに、前記スペーサー３を挿入し、このスペーサー３の他端側に一端側を当接した状態で前記復帰ばね２を挿入する。
【００３６】
次に、前記ケース１の収納部１ａに設けられた前記連結溝部１ｅと前記ガイド溝部１ｆに、前記操作部材４の駆動体部４ａの摺動面に設けられた前記突起部４ｄと前記ガイド突部４ｅを挿通することにより重ね合わせ、これとは反対の一側面に固着された前記摺動子片５上に、導電パターンが設けられた前記基台６が一体的に固着された前記カバー８を被せて、カシメ又は接着などの方法で取り付けることにより組立が終了する。
【００３７】
このように、前記操作部材４の前記駆動体部４ａには、前記突起部４ｄが形成される摺動面と、前記摺動子片５が固着される一側面とを表裏に対向させて形成するようにしたので、前記スペーサー３及び前記復帰ばね２を前記ケース１の前記ばね収納部１ｃに取り付けた後に、前記操作部材４の前記突起部４ｄが設けられた摺動面を下にして上から重ねて取り付けて、その上から導電パターンが設けられた前記基台６が一体的に固着された前記カバー８を取り付ければ組立が終了するため、組み立てが簡易となり作業性が向上されるものとなる。また、導電パターンを前記駆動体部４ａの一側面である平坦面状に形成することができるので、導電パターンの形成が容易に行えるものとなっている。
【００３８】
次に、図１及び図３で上記構成のスライド型電気部品の動作について説明する。
【００３９】
まず、図１に示す初期の状態では、操作部材４（操作ノブ４ｃ）は中立位置にあり、この状態では駆動体部４ａの突起部４ｄが連結溝部１ｅに挿入されていて、突起部４ｄの両端部が一対のスペーサー３、３に当接され、一対のスペーサー３、３を介して一対の復帰ばね２、２の付勢力によって、操作ノブ４ｃは中立位置に保持されている。
【００４０】
この時、一対の復帰ばね２、２の両付勢力は均衡に保たれた状態となっており、また、突起部４ｄの両端部間の距離は、その寸法が、下方に位置する壁部１ｄ間の距離より長いので、中立位置での前記操作ノブ４ｃのがたつきが抑えられるものになっている。
【００４１】
また、復帰ばね２、２によって操作部材４は上方に押し上げられ、両方のスペーサー３、３が突起部４ｄと壁部１ｄに接した状態となるので、所定の中立位置に位置することとなる。
【００４２】
この状態から、例えば図３に示すように、操作ノブ４ｃが図示左方向へ押圧されると、操作ノブ４ｃが左側にスライド移動されるものとなり、これに伴って駆動体部４ａも、突起部４ｄが摺動溝部１ｆに、ガイド突部４ｅがガイド溝部１ｇにそれぞれ摺動案内されて左方に円弧状にスライド移動される。このスライド移動に伴って、突起部４ｄの左端部はスペーサー３を介して左側に配設された復帰ばね２の付勢力に抗して復帰ばね２を圧縮させていく。このスライド移動とともに摺動子片５の接触片５ａが基台６の表面上を摺動して導電パターンと接触することで接点がオン状態となり、信号が外部端子７を介して外部の回路に送信されるものとなっている。一方、右側の復帰ばね２は図３に示すように、右側のばね収納部１ｃ内に収納されており、したがって、右側の復帰ばね２の操作部材４側の一端部（実際に接するのは右側のスペーサー３）は操作部材４の突起部４ｄの右端部から離れている。
【００４３】
この時、駆動体部４ａは、円弧状に形成された摺動溝部１ｆに沿って突起部４ｄが円弧状にスライド移動されるものとなるが、一方、円弧状の摺勤溝部１ｆに対応するばね収納部１ｃ、１ｃは直線状に形成されている。このように、各ばね収納部１ｃに復帰ばね２が直線となるように配置されていて、概略復帰ばね２は突起部４ｄの円弧状のスライド移動方向に沿って形成されていることから、突起部４ｄが摺動溝部１ｆを円弧状に摺動する際には、復帰ばね２は直線状に撓むようになっている。このように、突起部４ｄが摺動溝部１ｆを円弧状に摺動する際には、復帰ばね２が直線状に撓むようにしたことから、復帰ばね２を直線状のまま使用でき、また、概略復帰ばね２の端面に垂直に荷重が加わることになるのでよじれることがなくなると共に、突起部４ｄに異常な荷重が加わらないため、操作部材４の動作が安定し確実な復帰が得られるものとなっている。なお、中立位置から、このようにスライド方向に押圧する動作を行う際、操作ノブ４ｃは、若干、下方に移動するが、該移動は抵抗体の幅方向への移動となり、抵抗体末端から接触片５ａまでの距離は変わらないので出力は殆ど変わらない。
【００４４】
図３の状態から、操作ノブ４ｃへの押圧が解除されると、復帰ばね２、２によって上方に付勢されつつ駆動体部４ａが圧縮されていた左側の復帰ばね２の付勢力により図１に示す中立位置へと復帰される。この時、突起部４ｄの右端部は、右側に配置された復帰ばね２に付勢されている右側のスペーサー３に当接するものとなり、この時のスペーサー３の弾性変形によって衝突音の発生を抑えることができるものとなっている。
【００４５】
また、中立位置付近において一対の復帰ばね２、２の付勢力は操作部材４の細長円弧状をした突起部４ｄの両端の稍下方から付与されて、操作部材４は図１の上方（スライド移動方向と直交する方向）に押し上げられ、突起部４ｄの上面が連結溝部１ｅの上側の内面に当接するまで移動される。また、突起部４ｄが上方に押し上げられると、壁部１ｄが傾斜して配置されているので、突起部４ｄが壁部１ｄより突出していても次第に引っ込むこととなり、復帰ばね２の操作部材４側の一端部は、ケース１の壁部１ｄにそれぞれ当接して（実際はスペーサー３を介して）操作部材４を確実に中立位置に位置決めする。これにより、操作部材４はスライド移動方向にガタがなく、よって復帰精度をたかめられる。尚、前記操作ノブ４ｃが図示右方向へ押圧された場合においても、上記と同様な動作となるため、ここではその説明を省略する。
【００４７】
尚、上記第１の実施例においては、導電パターンは抵抗体及び集電体で説明しスライド型可変抵抗器を構成したが、導電パターンをオン状態とオフ状態となるスイッチパターンで形成しスライド型スイッチとしてもよい。また、摺動子片５と導電パターンの配置を逆としてもよいし、それらを駆動体部４ａの換作ノブ４ｃと対向する側面に設けてもよい。
【００４８】
また、復帰ばね２をコイルバネで形成し、復帰ばね２をハの字形状に配置するとともにケースに当接するケース部分もハの字形状としたため、復帰ばね２がよじれることなく、スムーズに操作部材４の移動方向と直交する方向への移動が可能である。
【００４９】
また、復帰ばね２と操作部材４の間にスペーサー３を介在させたため、復帰ばね２の端面形状に影響されずに操作部材４はスムーズに操作部材４のスライド移動方向と直交する方向への移動が可能であり、復帰ばね２をコイルバネで形成した場合にはより効果的である。
【００５０】
また、ケース１に操作部材４を弧上に移動するように収納したため、復帰ばね２を長くしても大型にならないので、小型で長ストローク対応が可能となる。また、垂直面で復帰ばね２は操作部材４に接するので、スムーズに復帰が可能となる。
【００５１】
また、上記した第１の実施例によれば、操作部材４の駆動体部４ａに、摺動方向と直交する方向に突出されて一対の復帰ばね２、２の他端側と係合する突起部４ｄが形成されると共に、ケース１の収納部１ａには、駆動体部４ｄの摺動画より下方に摺動方向に沿って並設された一対のばね収納部１ｃ、１ｃを形成し、この一対のばね収納部１ｃ、１ｃの間に両方を連結する連結溝部１ｅを形成して、この連結溝部１ｅに連続して一対のばね収納部１ｃ、１ｃに駆動体部４ａの突起部４ｄを摺動案内する前記摺動溝部１ｆを形成するようにしたので、前記操作部材４の駆動体部４ａと重なる位置に並設して、復帰ばね２を配置する前記ばね収納部１ｃを形成することができるため、駆動体部４ａの摺動方向に連ねて前記復帰ばね２を配置する構造にくらべて駆動体部４ａの摺動方向の寸法を短くすることができるので、電気部品全体の大きさを小さくすることができるものとなっている。
【００５３】
次に、本発明の参考例を図８〜図１１を参照して説明する。図８〜図１１は参考例であるスライド型電気部品を示し、図８は要部縦断面図、図９は図８の要部拡大説明図、図１０は要部横断面図、図１１は図１０の要部拡大説明図である。なお、この参考例は先に説明した図１２及び図１３の従来例と以下に説明する個所以外は同様であるので、参考例の特徴部分以外の詳細な説明は省略する。
【００５４】
この参考例では、操作部材であるスライド体２２のばね逃げ溝２２ｂと係止片逃げ溝２２ｃとの連接部に段部が、上方にいく従って外側方に突出したテーパー部３０とされている。このテーパー部３０の上部は、スライド体２２の中立位置においてばね係止片２１ｂよりそれぞれの復帰ばね２３側に突出している。したがって、一対の復帰ばね２３のスライド体２２側の一端部がばね係止片２１ｂより突出したテーパー部３０にそれぞれ当接することにより、スライド体２２をケース２１の中央位置に付勢する。この際、スライド体２２はスライド移動方向と直交する方向に元々隙間があるので、両側の復帰ばね２３、２３により前記直交する方向（図８の上方向）にスライド体２２を押し上げて、両復帰ばね２３、２３のスライド体２２側の一端部は各ばね係止片２１ｂ、２１ｂにそれぞれ当接することになる。これにより、スライド体２２は図８に示す中立位置に位置決めされる。
【００５５】
このようにスライド体２２の両側にテーパー部３０、３０を設けて、テーパー部３０、３０の長い部分はケース２１のばね係止片２１ｂ、２１ｂ間の距離より長く、それらの短い部分はケース２１のばね係止片２１ｂ、２１ｂ間より短くしてある。
【００５６】
また、このテーパー部３０は円弧面で形成してもよく、これにより、操作部材（２２）はスムーズに操作部材（２２）のスライド移動方向と直交する方向への移動が可能である。
【００５７】
このような参考例にあっても前記第１の実施例と同様の作用効果を奏するものである。
【００５９】
【発明の効果】
以上説明したように、本発明によれば、コイルバネの端部が当接するケース側の当接部間の距離と、弾性部材の操作部材側の端部が当接する操作部材の当接部間の距離が異なっていても、操作部材は弾性部材によって操作部材のスライド移動方向と直交する方向にケースに当接するまで移動して、両者の長さの差が少なくなり、よって復帰精度を高めることができる。
【００６０】
また、本発明によれば、弾性部材をコイルバネで形成し、コイルバネをハの字形状に配置するとともにコイルバネを収納するケース部分もハの字形状としたため、コイルバネがよじれることなく、スムーズに操作部材の移動方向と直交する方向への移動が可能である。
【００６２】
また、本発明によれば、弾性部材と操作部材の間にスペーサーを介在させたため、弾性部材の端面形状に影響されずに操作部材はスムーズに操作部材の移動方向と直交する方向への移動が可能であり、弾性部材をコイルバネで形成した場合にはより効果的である。
【００６３】
また、本発明によれば、操作部材を弧状にスライド移動するように設けたため、小型で長ストローク対応が可能となる。また、垂直面でコイルバネは操作部材に接するので、スムーズに復帰が可能となる。
【図面の簡単な説明】
【図１】本発明の第１の実施例であるスライド型電気部品の基台と摺動子片を取り除いた操作部材と復帰ばねの係合状態を示す平面図である。
【図２】本発明のスライド型電気部品の縦断面図である。
【図３】本発明のスライド型電気部品の操作部材の動作状態を示す説明図である。
【図４】本発明のスライド型電気部品のケースを示す平面図である。
【図５】本発明のスライド型電気部品のケースを示す縦断面図である。
【図６】本発明のスライド型電気部品の操作部材を示す底面図である。
【図７】本発明のスライド型電気部品の操作部材を示す縦断面図である。
【図８】 本発明の参考例であるスライド型電気部品の要部縦断面図である。
【図９】図８の要部拡大説明図である。
【図１０】 本発明の参考例であるスライド型電気部品の要部横断面図である。
【図１１】図１０の要部拡大説明図である。
【図１２】従来のスライド型電気部品を示す要部縦断面図である。
【図１３】従来のスライド型電気部品を示す要部横断面図である。
【符号の説明】
１、２１ ケース
１ａ 収納部
１ｂ 開口部
１ｃ ぱね収納部
１ｄ 壁部
１ｅ 連結溝部
１ｆ 摺動溝部
１ｇ ガイド溝部
２、２３ 復帰ばね
３ スペーサー
４ 操作部材
４ａ 駆動体部
４ｃ 操作ノブ
４ｄ 突起部
４ｅ ガイド突部
５ 摺動子片
６ 基台
３０ テーパー部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a slide-type electrical component, and more particularly to a structure of a slide-type electrical component of a type that returns to a neutral position used for zoom control of an electronic device such as a video camera.
[0002]
[Prior art]
The structure of a conventional slide-type electrical component is shown in FIGS. FIG. 12 is a vertical cross-sectional view of the main part, and FIG. 13 is a cross-sectional view of the main part.
[0003]
As a structure of a conventional slide type electric component, a case 21 formed in a box shape by bending a metal plate or the like, and an operation member made of an insulating material such as a synthetic resin movably housed in the case 21 , A pair of return springs 23 and 23 provided on both sides of the slide body 22 to urge the slide body 22 to a neutral position, and held by the slide body 22 and moved together with the slide body 22. The contact piece 24 is made of a conductive material, and the fixed terminal 25 that is in contact with and away from the contact piece 24 is fixed, and the insulating substrate 26 is attached to the lower surface of the case 21.
[0004]
The upper surface plate of the case 21 is formed with a rectangular hole 21a in which the operation knob 22a of the slide body 22 protrudes and is slid. The case 21 is provided on opposite sides in the moving direction of the rectangular hole 21a. The spring locking pieces 21b and 21b are integrally bent inward. The pair of return springs 23 and 23 are locked between the spring locking pieces 21b and 21b and the inner side surfaces of the case 21, respectively.
[0005]
At the center of the upper surface of the slide body 22, an operation knob 22a projecting outward from the rectangular hole 21a is projected, and on the both sides of the upper surface across the operation knob 22a, the return spring in the sliding movement direction from both side portions. Slightly larger spring escape grooves 22b, 22b are formed as relief parts 23, and the spring locking pieces 21b, 21b when the slide body 22 slides continuously to the spring escape grooves 22b, 22b are formed. Slightly smaller locking piece escape grooves 22c and 22c are formed as escape portions.
[0006]
A step portion 22d is formed at the connecting portion between the spring relief groove 22b and the locking piece relief groove 22c, and one end of the pair of return springs 23 abuts on both step portions 22d and 22d of the slide body 22. Thus, the slide body 22 is urged toward the center position of the case 21. Further, when the slide body 22 is slid, the slide body 22 is moved in the sliding direction while the return spring 23 is pressed and compressed by the step portion 22d. At this time, the spring locking piece 21b is inserted into the locking piece relief groove 22c of the slide body 22, so that the slide movement of the slide body 22 can be reliably moved without being hindered.
[0007]
As an operation of the slide-type electrical component, when the operation knob 22a is pressed in either the left or right direction in FIG. 12 against the urging force of the return spring 23, the contact piece 24 also moves and the contact piece 24 moves. Is switched to and from the fixed terminal 25 to switch the circuit. Further, when the pressing to the operation knob 22a is released from this state, the operation knob 22a is returned to the original center position by the urging force of the return spring 23.
[0008]
[Problems to be solved by the invention]
However, in the structure of the conventional slide type electric component described above, the step 22d of the slide body 22 is pressed by the pair of return springs 23, 23 to return to the neutral position where the spring 22 abuts against the spring locking piece 21b. However, the length between the stepped portions 22d may be different from the length between the spring locking pieces 21b. The length between the stepped portions 22d is longer than the length between the spring locking pieces 21b, and the stored return is caused by variations in spring force due to variations in the return springs themselves or bending accuracy of the spring locking pieces 21b. If there is variation in the magnitude of the spring force due to non-uniform spring length, or variations in the direction of the spring force, the accuracy of returning the slide body 22 (operation knob 22a) to the neutral position will deteriorate. . Further, when the length between the stepped portions 22d is shorter than the length between the spring locking pieces 21b, this causes a backlash of the slide body 22 at the neutral position.
[0009]
Accordingly, an object of the present invention is to solve the above-described problems and to provide a self-return type slide type electric component in which the accuracy of returning to the neutral position is enhanced.
[0010]
[Means for Solving the Problems]
In order to solve the above-described problem, in the present invention, as a first means, an operation member that is slidable and provided with one of a slider piece or a conductive pattern, a case that guides the slide movement of the operation member, A pair is provided across the operation member, one end portion on the operation member side is positioned on the operation member and the case, and the other end portion is disposed in contact with the case, and is compressed in the sliding movement direction of the operation member. A slide-type electrical component having an elastic member arranged in a manner that allows the operation member to be moved in a direction orthogonal to the slide movement direction by the elastic member. The elastic member is formed of a pair of coil springs, the pair of coil springs are arranged in a U-shape, and the case has a pair of C-shaped spring storage portions for storing the pair of coil springs in a straight line. The spring accommodating portion has a pair of wall portions for positioning both end portions of the coil spring, and the distance between the wall portions facing the pair of spring accommodating portions is determined by the operating member. One end side where the wall portion is inclined so as to become longer toward the side moved in the direction orthogonal to the sliding movement direction by the spring force of the coil spring, and the pair of coil springs are arranged to face each other A spacer is interposed between the wall portion and one end portion of the coil spring, and the operation member is disposed between the spacers, and both ends thereof are arranged on the spacer. Forming a protrusion abutting the sliding movement of the operating member is a arcuate It is characterized by that.
[0011]
As the second means, in the first means, A connecting groove portion narrower than the spring housing portion is formed between the opposing wall portions of the pair of spring housing portions so as to connect both spring housing portions. A sliding groove portion is continuously formed in the same size as the connection groove portion between the pair of wall portions facing each other in the spring storage portion, and the sliding groove portion and the connection groove portion are formed in an arc shape, The projecting portions of the operating member are slidably guided in the arc-shaped connecting groove portion and the sliding groove portion, and both end portions of the projecting portion are formed in a curved shape protruding outward. It is characterized by that.
[0012]
As the third means, in the second means, The case is formed with a guide groove portion formed by an arc-shaped long groove having the same center point as the arc shape of the coupling groove portion and the sliding groove portion, and the operation member is slidably guided by the guide groove portion. Arc-shaped guide protrusions are formed It is characterized by that.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention are shown in FIGS. FIG. 1 is a plan view showing the engagement state of an operating member and a return spring from which the base of the slide type electric component and the slider piece are removed, FIG. 2 is a longitudinal sectional view of the slide type electric component, and FIG. FIG. 4 is a plan view of the case, FIG. 5 is a longitudinal sectional view, FIG. 6 is a bottom view of the operating member, and FIG. 7 is a longitudinal sectional view.
[0018]
In FIG. 1 and FIG. 3, the operation member and the return spring are shown in a transparent state for convenience, so that the engagement between the operation member and the return spring and the operation state can be clearly understood.
[0019]
In the figure, the case 1 is formed in a bottomed box shape with an upper surface and a front surface made of an insulating material such as a synthetic resin, and a horizontally long storage portion 1a is formed at the center of the storage portion 1a. A horizontally long opening 1b is also formed on the upper side. Further, the upper surface of the case 1 is formed in a gentle arc shape, and the upper surface of the opening 1b is also formed in an arc shape along this.
[0020]
A pair of spring storage portions each having a long groove in a state slightly inclined along a circular arc having the same center as the circular arc of the upper surface of the case 1 (both side-shaped arrangement) on both sides of the central portion of the inner surface of the storage portion 1a. 1c and 1c are formed, and inner surfaces facing in the longitudinal direction of the spring accommodating portion 1c are wall portions 1d and 1d for positioning both ends of a return spring (elastic member) 2 described later. Further, between the pair of spring accommodating portions 1c and 1c, a connecting groove portion 1e is formed which is slightly narrower and deeper than the spring accommodating portion 1c so as to connect both, and the connecting groove portion 1e. Sliding groove portions 1f and 1f are formed between the pair of wall portions 1d and 1d facing each other in the spring housing portion 1c so as to slide and guide a protruding portion 4d of the driving body portion 4a described later. .
[0021]
In this case, the connecting groove portion 1e and the sliding groove portions 1f and 1f are continuously formed with the same size, and the spring accommodating portion 1c is formed in a straight line, whereas the opening It is formed in an arc shape having the same center point as the arc shape of the upper surface of the portion 1b.
[0022]
Further, a guide groove portion 1g made of an arc-shaped long groove having the same center point as the arc shape of the upper surface of the opening 1b is formed on the side surface near the inner bottom surface of the storage portion 1a. When the guide protrusion 4e and the protrusion 4d provided on the drive body 4a of the operation member 4 to be described later are guided and slid by the guide groove 1g and the slide groove 1f, the operation member 4 slides along the arc. It is supposed to be moved. However, a predetermined clearance is formed between the two.
[0023]
A pair of return springs 2 and 2 made of a metal wire wound in a coil shape are stored and held in the pair of spring storage portions 1 c and 1 c of the case 1. In this case, the spring storage portion 1c faces. Wall Both ends of the return spring 2 are compressed and abutted against 1d and 1d, and by positioning both ends of the return spring 2, the return spring 2 is held in the spring accommodating portion 1c. ing. In addition, a pair of return springs 2 and 2 on one end side where they are arranged to face each other Wall 1d and 1d are made of elastic material such as rubber. Bae Therefore, each end of the pair of return springs 2 and 2 is not Bae Through the server 3 Wall It is press-contacted to 1d. Between the spacers 3 and 3, a protrusion 4d provided on a drive body 4a of the operation member 4 described later is sandwiched, and the spring force of the pair of return springs 2 and 2 is transmitted to the operation member 4. Is held in a neutral position.
[0024]
The operation member 4 is formed of an insulating material such as synthetic resin, and has an operation body portion 4a having a substantially planar shape and an operation knob having an arcuate flange portion 4b provided on the upper side of the drive body portion 4a. 4c and one end of the return spring 2 Projection 4d And is formed from. The protrusion 4d is One side of the driving body 4a Plane In the center of the figure, an elongated arc is formed in the horizontal direction in FIG. Suddenly The protrusion 4 d is engaged with the connecting groove 1 e of the case 1. Further, both end portions of the protruding portion 4d are formed in a curved shape protruding outward, and the curved end portions are in contact with the spacer 3 to elastically deform the spacer 3. Further, the distance between both end portions of the protrusion 4d is formed to be longer than the distance between the wall portions 1d located below and smaller than the distance between the wall portions 1d located above even when the dimensions vary. ing.
[0025]
Thus, the spacer 3 made of an elastic material that comes into contact with the other end side of the return spring 2 is disposed on the wall portion 1d of the spring accommodating portion 1c that is connected by the connecting groove portion 1e, and the connecting groove portion 1e. Since the curved surfaces of both end portions of the projection 4d provided on the driving body portion 4a engaged with the contact member 4 are formed so as to abut against the other end of the spacer 3 to elastically deform the spacer 3, the operation member 4 is When returning to the central position, it is possible to suppress a collision sound when the protrusion 4d of the drive body 4a and the end of the return spring 2 come into contact with each other.
[0026]
Also, a guide protrusion 4e having an elongated arc shape extending over both ends of the plane is provided on the lower side of the protrusion 4d so as to protrude in the protruding direction of the protrusion 4d. It is slidably engaged with a guide groove 1g formed in one storage portion 1a.
[0027]
The protrusion 4d is engaged with the connecting groove 1e and the sliding groove 1f formed in the housing 1a of the case 1, and the guide protrusion 4e is engaged with the guide groove 1g to be slid and guided. The operation knob 4c is slid in an arc shape. In this case, the plane on which the protrusion 4d of the driving body 4a is provided is a sliding surface that slides with the inner bottom surface of the storage portion 1a, and the guide protrusion 4e and the guide groove 1g are not necessarily required. It may be formed according to.
[0028]
Further, since the pair of return springs 2 and 2 are arranged in a C shape, the spring force of the pair of return springs 2 and 2 near the neutral position is at both ends of the elongated arc-shaped projection 4d of the operating member 4. Therefore, the operation member 4 is pushed up in FIG. 1 and moved until the upper surface of the projection 4d comes into contact with the upper inner surface of the connecting groove 1e. At this time, since the distance between the wall portions 1d becomes longer as going upward, the end portions of the return springs 2 and 2 on the operation member 4 side become wall portions as the operation member 4 is positioned upward. It will approach 1d. By the way, the maximum value of the neutral position shift is the difference between the length of the protrusion 4d and the length between the wall portions 1d when there is a difference in spring force of a predetermined value or more. Therefore, when the end portions of the return springs 2 and 2 on the operation member 4 side approach the wall portion 1d, the operation members are not affected even when there is a difference in spring force between the left and right return springs 2 and 2. 4 is less misaligned at the neutral position.
[0029]
Further, in the state where the operation member 4 is positioned above, the return springs 2 and 2 (elastic members), both of which are elastically deformed almost equally, even if the projection 4d is slightly longer than the connecting groove 1e, 3 comes into contact with the protrusion 4d and the wall 1d, and the neutral position of the operation member 4 does not shift even if there is a difference in spring force between the left and right return springs 2 and 2.
[0030]
If the operation member 4 is sufficiently moved upward, the operation member 4 is moved upward until both the spacers 3 and 3 are in contact with the projection 4d and the step 1d without elastic deformation. The neutral position of the operation member 4 does not shift even if there is a difference in spring force between the left and right return springs 2 and 2 and a difference in deformation amount of the elastic member.
[0031]
In this way, the sliding groove portion 1f is formed in an arc shape, and the projection 4d of the driving body portion 4a is slid on the sliding groove portion 1f, so that the operation knob 4c is slidably held in the arc shape. Therefore, the slide operation range of the operation knob 4c can be increased, and the size of the drive body portion 4a in the sliding direction can be reduced, so that the operation knob 4c can be downsized while ensuring the operability. It has become.
[0032]
Also, a slider piece 5 made of a conductive metal material is fixed to the other of the opposing planes of the drive body portion 4a. The slider piece 5 is provided with a plurality of cantilevered contact pieces 5a, and the contact pieces 5a come into contact with and separate from a conductive pattern (not shown) provided on a base 6 to be described later. It has become.
[0033]
The base 6 is made of a laminate such as phenol resin, and a conductive pattern (not shown) made of a conductive material such as steel foil or carbon is formed on the surface thereof, thereby forming a current collector and a resistor of a variable resistor. Has been. Further, an external terminal 7 made of a conductive metal plate connected to the conductive pattern by a through hole or the like is fixed to the back surface.
[0034]
The base 6 is integrally fixed to a flat cover 8 made of an insulating material such as a synthetic resin on the back side, and the slider piece 5 having the conductive pattern fixed to the drive body 4a. It is attached to the case 1 so as to face and separate from the contact piece 5a. When the sliding element piece 5 and the conductive pattern are formed, the conductive pattern is formed on the driver 4a and the slider piece 5 is formed on the base 6. Good.
[0035]
In order to assemble the slide-type electrical component having the above-described configuration, the spacer 3 is inserted into the wall portions 1d and 1d on the opposite end sides of the pair of the spring accommodating portions 1c and 1c of the case 1, and the spacer 3 The return spring 2 is inserted in a state where one end is in contact with the end.
[0036]
Next, the projecting portion 4d provided on the sliding surface of the driving body portion 4a of the operation member 4 and the guide projection are provided in the connecting groove portion 1e and the guide groove portion 1f provided in the housing portion 1a of the case 1. The cover 8 in which the base 6 provided with a conductive pattern is integrally fixed on the slider piece 5 which is overlapped by being inserted through the portion 4e and fixed on one side opposite thereto. Is attached by a method such as caulking or gluing.
[0037]
As described above, the driving body portion 4a of the operation member 4 is formed such that the sliding surface on which the protruding portion 4d is formed and the one side surface on which the slider piece 5 is fixed are opposed to each other. So that Bae -Sa - 3 and the return spring 2 are attached to the spring housing part 1c of the case 1, and then attached with the sliding surface of the operating member 4 provided with the projection 4d facing down, The base 6 provided with the conductive pattern is integrated Target Since the assembly is completed when the cover 8 fixed to the cover is attached, the assembly is simplified and the workability is improved. In addition, since the conductive pattern can be formed in a flat surface shape that is one side surface of the driving body portion 4a, the conductive pattern can be easily formed.
[0038]
Next, the operation of the slide-type electrical component having the above configuration will be described with reference to FIGS.
[0039]
First, in the initial state shown in FIG. 1, the operation member 4 (operation knob 4c) is in the neutral position. In this state, the protrusion 4d of the drive body 4a is inserted into the connecting groove 1e, and the protrusion 4d Both end portions are brought into contact with the pair of spacers 3 and 3, and the operation knob 4 c is held at the neutral position by the biasing force of the pair of return springs 2 and 2 through the pair of spacers 3 and 3.
[0040]
At this time, both urging forces of the pair of return springs 2 and 2 are kept in a balanced state, and the distance between both end portions of the projection 4d is the wall portion 1d positioned below. Since the distance is longer than the distance between them, rattling of the operation knob 4c at the neutral position is suppressed.
[0041]
Further, the operating member 4 is pushed upward by the return springs 2 and 2 so that both the spacers 3 and 3 are in contact with the protruding portion 4d and the wall portion 1d, so that they are positioned at a predetermined neutral position.
[0042]
From this state, for example, as shown in FIG. 3, when the operation knob 4c is pressed in the left direction in the drawing, the operation knob 4c is slid to the left side. 4d is slidably guided by the sliding groove 1f and the guide protrusion 4e is slid by the guide groove 1g, and is slid in an arc shape to the left. Along with this sliding movement, the left end portion of the protrusion 4 d compresses the return spring 2 against the urging force of the return spring 2 disposed on the left side via the spacer 3. With this sliding movement, the contact piece 5a of the slider piece 5 slides on the surface of the base 6 and comes into contact with the conductive pattern, so that the contact is turned on, and the signal is transmitted to the external circuit via the external terminal 7. It is to be sent. On the other hand, as shown in FIG. 3, the right return spring 2 is accommodated in the right spring accommodating portion 1c. Therefore, one end of the right return spring 2 on the operating member 4 side (actually in contact with the right The spacer 3) is separated from the right end of the projection 4d of the operating member 4.
[0043]
At this time, in the driving body portion 4a, the protrusion 4d is slid in an arc shape along the sliding groove portion 1f formed in an arc shape, but corresponds to the arc-shaped sliding groove portion 1f. The spring accommodating portions 1c and 1c are formed in a linear shape. Thus, since the return spring 2 is arranged in a straight line in each spring accommodating portion 1c, and the approximate return spring 2 is formed along the arcuate slide movement direction of the protrusion 4d, the protrusion When the portion 4d slides in the arc shape in the sliding groove portion 1f, the return spring 2 is bent linearly. Thus, when the protrusion 4d slides along the sliding groove 1f in an arc shape, the return spring 2 is bent in a straight line, so that the return spring 2 can be used in a straight line. Since a load is applied perpendicularly to the end face of the return spring 2, it is not kinked, and an abnormal load is not applied to the projection 4d, so that the operation of the operation member 4 is stabilized and a reliable return can be obtained. ing. When performing the operation of pushing in the sliding direction from the neutral position in this way, the operation knob 4c moves slightly downward, but this movement is a movement in the width direction of the resistor, and contact is made from the resistor end. Since the distance to the piece 5a does not change, the output hardly changes.
[0044]
When the pressure on the operation knob 4c is released from the state of FIG. 3, the biasing force of the left return spring 2 compressed by the drive body portion 4a while being biased upward by the return springs 2 and 2 is shown in FIG. To the neutral position shown in FIG. At this time, the right end portion of the protrusion 4d comes into contact with the right spacer 3 biased by the return spring 2 disposed on the right side, and the occurrence of collision noise is suppressed by elastic deformation of the spacer 3 at this time. It has become something that can be.
[0045]
Further, in the vicinity of the neutral position, the urging force of the pair of return springs 2 and 2 is applied from the lower side of both ends of the elongated arc-shaped projection 4d of the operation member 4, and the operation member 4 is moved upward (sliding movement) in FIG. And is moved until the upper surface of the protrusion 4d comes into contact with the upper inner surface of the connecting groove 1e. Further, when the protruding portion 4d is pushed upward, the wall portion 1d is inclined so that the protruding portion 4d gradually retracts even if the protruding portion 4d protrudes from the wall portion 1d. One end of each of the two contacts the wall 1d of the case 1 (actually via the spacer 3) to reliably position the operation member 4 at the neutral position. As a result, the operation member 4 has no backlash in the slide movement direction, and thus the return accuracy is increased. Even when the operation knob 4c is pressed in the right direction in the figure, the operation is the same as described above, and thus the description thereof is omitted here.
[0047]
In the first embodiment, Although the conductive pattern is described with a resistor and a current collector to constitute a slide type variable resistor, the conductive pattern may be formed as a switch pattern that is turned on and off to form a slide type switch. Further, the arrangement of the slider piece 5 and the conductive pattern may be reversed, or they may be provided on the side surface of the driving body portion 4a facing the conversion knob 4c.
[0048]
In addition, since the return spring 2 is formed of a coil spring, the return spring 2 is arranged in a letter C shape, and the case portion that contacts the case is also in a letter C shape. It is possible to move in a direction orthogonal to the moving direction of
[0049]
Further, since the spacer 3 is interposed between the return spring 2 and the operation member 4, the operation member 4 smoothly moves in a direction orthogonal to the slide movement direction of the operation member 4 without being affected by the end face shape of the return spring 2. This is more effective when the return spring 2 is formed of a coil spring.
[0050]
Further, since the operation member 4 is accommodated in the case 1 so as to move on the arc, even if the return spring 2 is lengthened, it does not become large, so that it is small and can accommodate a long stroke. Further, since the return spring 2 is in contact with the operation member 4 on the vertical surface, the return can be smoothly performed.
[0051]
Further, according to the first embodiment described above, the protrusion that protrudes in the direction perpendicular to the sliding direction to the drive body portion 4a of the operation member 4 and engages with the other end side of the pair of return springs 2 and 2. A portion 4d is formed, and a pair of spring storage portions 1c, 1c arranged in parallel along the sliding direction below the sliding image of the drive body portion 4d is formed in the storage portion 1a of the case 1, A connecting groove 1e is formed between the pair of spring accommodating portions 1c, 1c, and the protrusion 4d of the driving body portion 4a is slid onto the pair of spring accommodating portions 1c, 1c in succession to the connecting groove 1e. Since the sliding groove portion 1f for moving and guiding is formed, the spring housing portion 1c in which the return spring 2 is disposed is formed side by side at a position overlapping the drive body portion 4a of the operation member 4. Therefore, the return spring 2 is arranged continuously in the sliding direction of the drive body 4a. It is possible to shorten the sliding direction of the dimension of the driving body portion 4a compared to, it has become what it is possible to reduce the overall size of the electrical component.
[0053]
Next, the present invention reference An example will be described with reference to FIGS. 8 to 11 reference FIG. 8 is a longitudinal sectional view of an essential part, and FIG. Is 8 is an enlarged explanatory view of the main part, FIG. 10 is a cross-sectional view of the main part, and FIG. In addition, this reference The example is the same as the conventional example of FIGS. 12 and 13 described above, except for the points described below. Reference example Detailed description other than the characteristic part of is omitted.
[0054]
this reference In the example, a stepped portion is formed at the connecting portion between the spring escape groove 22b and the locking piece relief groove 22c of the slide body 22 as an operation member, and the tapered portion 30 protrudes outward as it goes upward. The upper portion of the tapered portion 30 protrudes toward the return spring 23 from the spring locking piece 21b at the neutral position of the slide body 22. Accordingly, one end of the pair of return springs 23 on the slide body 22 side abuts on the tapered portion 30 protruding from the spring locking piece 21b, thereby urging the slide body 22 to the center position of the case 21. At this time, since the slide body 22 originally has a gap in the direction perpendicular to the slide movement direction, the slide body 22 is pushed up in the perpendicular direction (upward in FIG. 8) by the return springs 23, 23 on both sides to return both sides. One end of the springs 23, 23 on the slide body 22 side comes into contact with the spring locking pieces 21b, 21b, respectively. Thereby, the slide body 22 is positioned in the neutral position shown in FIG.
[0055]
Thus, the taper portions 30 and 30 are provided on both sides of the slide body 22, and the long portions of the taper portions 30 and 30 are longer than the distance between the spring locking pieces 21 b and 21 b of the case 21, and those short portions are the case 21. Between the spring locking pieces 21b and 21b.
[0056]
In addition, the tapered portion 30 may be formed as an arc surface, whereby the operation member (22) can smoothly move in a direction perpendicular to the sliding movement direction of the operation member (22).
[0057]
like this reference Even in the example, the same effect as the first embodiment can be obtained.
[0059]
【The invention's effect】
As explained above, according to the present invention, Coil spring Case side where the end of the Right Even if the distance between the contact portions and the distance between the contact portions of the operation member with which the end of the elastic member on the operation member abuts are different, the operation member is in a direction perpendicular to the sliding movement direction of the operation member by the elastic member. Thus, the difference in length between the two is reduced, so that the return accuracy can be improved.
[0060]
In addition, according to the present invention, the elastic member is formed of a coil spring, the coil spring is arranged in a letter C shape, and the case portion for accommodating the coil spring is also in a letter C shape, so that the operation member can be smoothly operated without being twisted. It is possible to move in a direction orthogonal to the moving direction of
[0062]
Further, according to the present invention, since the spacer is interposed between the elastic member and the operation member, the operation member can smoothly move in the direction orthogonal to the movement direction of the operation member without being affected by the shape of the end face of the elastic member. This is possible and is more effective when the elastic member is formed of a coil spring.
[0063]
In addition, according to the present invention, since the operation member is provided so as to slide and move in an arc shape, the operation member is small and can support a long stroke. Further, since the coil spring is in contact with the operation member on the vertical plane, the return can be performed smoothly.
[Brief description of the drawings]
FIG. 1 is a plan view showing an engagement state of an operating member and a return spring from which a base and a slider piece of a slide type electric component according to a first embodiment of the present invention are removed.
FIG. 2 is a longitudinal sectional view of a slide type electrical component of the present invention.
FIG. 3 is an explanatory view showing an operating state of an operation member of the slide type electric component of the present invention.
FIG. 4 is a plan view showing a case of a slide type electric component of the present invention.
FIG. 5 is a longitudinal sectional view showing a case of the slide type electrical component of the present invention.
FIG. 6 is a bottom view showing an operation member of the slide type electric component of the present invention.
FIG. 7 is a longitudinal sectional view showing an operation member of the slide type electric component of the present invention.
[Fig. 8] of the present invention reference It is a principal part longitudinal cross-sectional view of the slide type electrical component which is an example.
FIG. 9 is an enlarged explanatory view of a main part of FIG. 8;
FIG. 10 shows the present invention. reference It is a principal part cross-sectional view of the slide type electrical component which is an example.
FIG. 11 is an enlarged explanatory diagram of a main part of FIG.
FIG. 12 is a longitudinal sectional view of a main part showing a conventional slide type electrical component.
FIG. 13 is a cross-sectional view of a main part showing a conventional slide type electric component.
[Explanation of symbols]
1,21 cases
1a Storage part
1b opening
1c Pane storage part
1d wall
1e Connecting groove
1f Sliding groove
1g Guide groove
2, 23 Return spring
3 Spacer
4 Operation members
4a Drive unit
4c Operation knob
4d protrusion
4e Guide protrusion
5 Slider piece
6 base
30 Taper part

Claims (3)

スライド移動可能であって摺動子片あるいは導電パターンの一方を設けた操作部材と、
前記操作部材のスライド移動をガイドするケースと、
前記操作部材を挟んで一対設けられ、前記操作部材側の一端部が前記操作部材及び前記ケースに位置決めされ、他端部が前記ケースに当接して配置され、前記操作部材のスライド移動方向に圧縮可能に配置された弾性部材とを有するスライド型電気部品であって、
前記弾性部材によって、前記操作部材が前記スライド移動方向と直交する方向に移動させられ、
前記弾性部材を一対のコイルバネで形成し、前記一対のコイルバネをハの字形状に配置するとともに、
前記ケースには前記一対のコイルバネを収納するハの字形状の一対のばね収納部をそれぞれ直線状に形成しており、前記ばね収納部には前記コイルバネの両端部を位置決めする一対の壁部を有し、
前記一対のばね収納部が対向する前記壁部間の距離が、前記操作部材が前記コイルバネのバネ力によって前記スライド移動方向と直交する方向に移動させられる側の方に行くに従って長くなるように前記壁部を傾斜させてあり、
前記一対のコイルバネが対向して配置される一端側の前記壁部と前記コイルバネの一端部との間にスペーサーをそれぞれ介在させ、
前記操作部材には、前記スペーサー間に配置されて両端が前記スペーサーにそれぞれ当接する突起部を形成し、
前記操作部材の前記スライド移動は弧状であることを特徴とするスライド型電気部品。An operating member that is slidable and provided with either a slider piece or a conductive pattern;
A case for guiding the sliding movement of the operation member;
A pair is provided across the operation member, one end portion on the operation member side is positioned on the operation member and the case, and the other end portion is disposed in contact with the case, and is compressed in the sliding movement direction of the operation member. A slide-type electrical component having a resiliently arranged elastic member,
The operating member is moved in a direction orthogonal to the sliding movement direction by the elastic member ,
The elastic member is formed of a pair of coil springs, the pair of coil springs are arranged in a U-shape,
The case is formed with a pair of C-shaped spring accommodating portions for accommodating the pair of coil springs in a straight line, and the spring accommodating portion has a pair of wall portions for positioning both ends of the coil spring. Have
The distance between the wall portions facing the pair of spring accommodating portions becomes longer as it goes toward a side where the operation member is moved in a direction perpendicular to the sliding movement direction by the spring force of the coil spring. The wall is inclined,
A spacer is interposed between the wall portion on one end side where the pair of coil springs are opposed to each other and one end portion of the coil spring,
The operating member is formed between the spacers and has protrusions whose both ends are in contact with the spacers,
The slide type electric component according to claim 1 , wherein the slide movement of the operation member is arcuate . 請求項１において、前記一対のばね収納部の対向する前記壁部間には、両方のばね収納部を連結するように前記ばね収納部より幅狭の連結溝部が形成されており、前記連結溝部に連続して前記ばね収納部の対向する前記一対の壁部間に前記連結溝部と同じ大きさで連続して摺動溝部が形成されるとともに前記摺動溝部と前記連結溝部とは円弧状に形成されており、前記円弧状の前記連結溝部と前記摺動溝部に前記操作部材の突起部が摺動案内されると共に、前記突起部の両端部が外方に突出する曲面状に形成されていることを特徴とするスライド型電気部品。In Claim 1, between the said wall parts which a pair of said spring accommodating part opposes, the connecting groove part narrower than the said spring accommodating part is formed so that both spring accommodating parts may be formed, The said connecting groove part A sliding groove portion is continuously formed in the same size as the connecting groove portion between the pair of opposing wall portions of the spring accommodating portion, and the sliding groove portion and the connecting groove portion are formed in an arc shape. The projecting portions of the operating member are slidably guided to the arc-shaped connecting groove portion and the sliding groove portion, and both end portions of the projecting portion are formed in a curved shape protruding outward. slide electric part, characterized in that there. 請求項２において、前記ケースには、前記連結溝部と前記摺動溝部の円弧状と同一中心点を持つ円弧状の長溝からなるガイド溝部が形成されており、前記操作部材には、前記ガイド溝部に摺動案内される円弧状のガイド突部が形成されていることを特徴とするスライド型電気部品。3. The guide groove according to claim 2, wherein the case is formed with an arcuate long groove having the same center point as the arc of the connecting groove and the sliding groove, and the operation member includes the guide groove An arcuate guide projection that is slidably guided is formed .
JP2002152623A 2002-05-27 2002-05-27 Slide type electrical parts Expired - Fee Related JP4071545B2 (en)

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JP2002152623A JP4071545B2 (en) 2002-05-27 2002-05-27 Slide type electrical parts
KR1020030029244A KR100578765B1 (en) 2002-05-27 2003-05-09 Slide type electric parts
CNB031383432A CN1230849C (en) 2002-05-27 2003-05-27 Sliding type electric component
TW092114278A TWI225657B (en) 2002-05-27 2003-05-27 Sliding electric component

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US7339131B2 (en) * 2005-08-25 2008-03-04 Matsushita Electric Industrial Co., Ltd. Slide switch apparatus
JP2009081082A (en) * 2007-09-27 2009-04-16 Fujifilm Corp Inputting device
KR100967131B1 (en) * 2007-12-04 2010-07-05 주식회사 만도 Pressure sensor
JP5113204B2 (en) * 2010-03-10 2013-01-09 アルプス電気株式会社 Slider mounting structure and mounting method
CN102412093A (en) * 2011-12-29 2012-04-11 上海自动化仪表股份有限公司 Sliding key magnetic reed switch with multiway control based on single key

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JP2003346602A (en) 2003-12-05
KR20030091672A (en) 2003-12-03

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