JPH01146206U - - Google Patents

Info

Publication number
JPH01146206U
JPH01146206U JP4253688U JP4253688U JPH01146206U JP H01146206 U JPH01146206 U JP H01146206U JP 4253688 U JP4253688 U JP 4253688U JP 4253688 U JP4253688 U JP 4253688U JP H01146206 U JPH01146206 U JP H01146206U
Authority
JP
Japan
Prior art keywords
thread
inclination angle
protrusion
lens barrel
helicoid
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.)
Granted
Application number
JP4253688U
Other languages
English (en)
Other versions
JPH0548167Y2 (ja
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4253688U priority Critical patent/JPH0548167Y2/ja
Publication of JPH01146206U publication Critical patent/JPH01146206U/ja
Application granted granted Critical
Publication of JPH0548167Y2 publication Critical patent/JPH0548167Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)
  • Gears, Cams (AREA)

Description

【図面の簡単な説明】
第1図は本考案のレンズ鏡筒の1実施例の断面
図、第2図は第1図に示すヘリコイドねじを構成
する1対の雌ねじ及び雄ねじの拡大断面図、第3
図は本考案の他の実施例のヘリコイドねじの断面
図である。 1……移動鏡筒、2……固定鏡筒、4……ヘリ
コイドねじ、5……光軸、6……雌ねじ、7……
雄ねじ、8,8′……雌ねじ山、9,9′……雄
ねじ山、10,10′,11,11′,13……
斜面、14……雌ねじ突起部、15……雄ねじ窪
み、16,17……側面、22……雌ねじ窪み、
23……雄ねじ突起部、24,25……側面、θ
……斜面の傾斜角、θ′……側面の傾斜角。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) ヘリコイドねじを介して光軸に沿つて移動
    させるレンズ鏡筒において、 上記ヘリコイドねじの少なくとも一方がねじ山
    の頂部にねじ山の斜面の傾斜角よりも大きな傾斜
    角の側面を有する突起部を有し、一方上記ねじ山
    の頂部と組合うねじ山の谷部に該斜面の傾斜角よ
    り大きな傾斜角の側面を有する窪みを有すること
    を特徴とするレンズ鏡筒。 (2) 上記突起部と窪みとの間に隙間をもつて隔
    てられている請求項1記載のレンズ鏡筒。
JP4253688U 1988-03-30 1988-03-30 Expired - Lifetime JPH0548167Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4253688U JPH0548167Y2 (ja) 1988-03-30 1988-03-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4253688U JPH0548167Y2 (ja) 1988-03-30 1988-03-30

Publications (2)

Publication Number Publication Date
JPH01146206U true JPH01146206U (ja) 1989-10-09
JPH0548167Y2 JPH0548167Y2 (ja) 1993-12-21

Family

ID=31268948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4253688U Expired - Lifetime JPH0548167Y2 (ja) 1988-03-30 1988-03-30

Country Status (1)

Country Link
JP (1) JPH0548167Y2 (ja)

Also Published As

Publication number Publication date
JPH0548167Y2 (ja) 1993-12-21

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