JPS6065708U - Helicoid mechanism of lens barrel - Google Patents

Helicoid mechanism of lens barrel

Info

Publication number
JPS6065708U
JPS6065708U JP15853783U JP15853783U JPS6065708U JP S6065708 U JPS6065708 U JP S6065708U JP 15853783 U JP15853783 U JP 15853783U JP 15853783 U JP15853783 U JP 15853783U JP S6065708 U JPS6065708 U JP S6065708U
Authority
JP
Japan
Prior art keywords
helicoid
tube
lens barrel
male
block
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
JP15853783U
Other languages
Japanese (ja)
Other versions
JPS6312331Y2 (en
Inventor
岡島　秀和
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
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 by Canon Inc filed Critical Canon Inc
Priority to JP15853783U priority Critical patent/JPS6065708U/en
Priority to US06/659,338 priority patent/US4582350A/en
Priority to DE19843437345 priority patent/DE3437345A1/en
Publication of JPS6065708U publication Critical patent/JPS6065708U/en
Application granted granted Critical
Publication of JPS6312331Y2 publication Critical patent/JPS6312331Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Lens Barrels (AREA)
  • Transmission Devices (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

第１図乃至第３図は本考案の一実施例を示し、第１図は
レンズ鏡筒の軸方向断面図。第２図はへりコイドブロッ
ク２６による螺合部の要部断面図。第３図は第１図Ａ、
　−Ａ２方向の断面図。 １・・・固定筒、４・・・オスへリコイド筒、６・・・
メスヘリコイド筒（距離環）、８・・・カム筒。1 to 3 show an embodiment of the present invention, and FIG. 1 is an axial cross-sectional view of a lens barrel. FIG. 2 is a cross-sectional view of the main part of the screwed part by the helicoid block 26. Figure 3 is Figure 1A,
-A sectional view in the A2 direction. 1... Fixed tube, 4... Male helicoid tube, 6...
Female helicoid tube (distance ring), 8...cam tube.

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）互いに螺合するヘリコイドを有するオスへリコイ
ド筒とメスへリコイド筒において、前記へリコイド筒の
一方のへリコイドの山部の高さを小さくして非螺合部を
形成したことを特徴とするレンズ鏡筒のへリコイド機構
。(1) In a male helicoid tube and a female helicoid tube having helicoids that screw into each other, a non-threaded portion is formed by reducing the height of the peak of one of the helicoids of the helicoid tube. Helicoid mechanism of the lens barrel. （２）前記オスへリコイド筒の外周上に収納部を設け、
前記収納部に前記メスへリコイド筒のへリコイドと螺合
したオスへリコイド部を有したへりコイドブロックを収
納し、前記へりコイドブロックに隣接するオスへリコイ
ド筒のヘリコイド部の山部の高さを小さくして前記非螺
合部とするとともに、前記へりコイドブロックの材料を
前記メスヘリコイド筒の材料に比して摩擦係数の小さい
材料で作ったことを特徴とする実用新案登録請求の範囲
第１項記載のレンズ鏡筒のヘリコイド機構。(2) providing a storage section on the outer periphery of the male helicoid tube;
A helicoid block having a male helicoid portion screwed with the helicoid of the female helicoid tube is stored in the storage portion, and the height of the peak of the helicoid portion of the male helicoid tube adjacent to the helicoid block is determined. is made smaller to form the non-threaded portion, and the helicoid block is made of a material with a smaller coefficient of friction than the material of the female helicoid tube. The helicoid mechanism of the lens barrel according to item 1.
JP15853783U 1983-10-13 1983-10-13 Helicoid mechanism of lens barrel Granted JPS6065708U (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP15853783U JPS6065708U (en) 1983-10-13 1983-10-13 Helicoid mechanism of lens barrel
US06/659,338 US4582350A (en) 1983-10-13 1984-10-10 Helically threaded mechanism
DE19843437345 DE3437345A1 (en) 1983-10-13 1984-10-11 HELICOID MECHANISM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15853783U JPS6065708U (en) 1983-10-13 1983-10-13 Helicoid mechanism of lens barrel

Publications (2)

Publication Number Publication Date
JPS6065708U true JPS6065708U (en) 1985-05-10
JPS6312331Y2 JPS6312331Y2 (en) 1988-04-08

Family

ID=30349224

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15853783U Granted JPS6065708U (en) 1983-10-13 1983-10-13 Helicoid mechanism of lens barrel

Country Status (1)

Country Link
JP (1) JPS6065708U (en)

Also Published As

Publication number Publication date
JPS6312331Y2 (en) 1988-04-08

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