JPS6192912U

JPS6192912U -

Info

Publication number: JPS6192912U
Application number: JP17702084U
Authority: JP
Priority date: 1984-11-21
Filing date: 1984-11-21
Publication date: 1986-06-16

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の上半部縦断面図
、第２図は移動枠とカムフオロアー取付け部の詳
細を示す要部断面図、第３図は従来例の要部縦断
面図である。｛７…固定筒、７ｄ…カム溝、１２…カム環、
１２ｅ…ガイド溝（直進溝）｝カム構造体、１３
…保持部材（第２移動枠）、１３ａ…座ぐり部、
１５ａ…カムフオロアーローラ、１５ｅ…締付部
材（ガイドピン）、Ｌ_２…光学素子（第２レンズ
群）。 Figure 1 is a vertical sectional view of the upper half of an embodiment of this invention, Figure 2 is a sectional view of the main part showing details of the moving frame and cam follower attachment part, and Figure 3 is a vertical sectional view of the main part of the conventional example. be. {7...fixed barrel, 7d...cam groove, 12...cam ring,
12e...Guide groove (straight groove)}Cam structure, 13
... Holding member (second moving frame), 13a... Counterbore part,
15a...Cam follower roller, 15e...Tightening member (guide pin), _L2 ...Optical element (second lens group).

Claims

[Claims for Utility Model Registration] (1) Consists of an annular cam structure having a cam groove or a guide groove, and a holding member fitted inside the annular cam structure; In a lens barrel in which an optical element is moved in the optical axis direction by a cam follower roller that fits into a groove, a counterbore is provided on the outer peripheral surface of the holding member, and the lower end of the cam follower roller is connected to the holding member. A guide pin structure for a lens barrel, characterized in that the guide pin is formed to fit into a counterbore, and a cam follower roller is held by a holding member by a tightening member. (2) The guide pin structure for a lens barrel according to claim 1, wherein the holding member is made of a synthetic resin material and the tightening member is a tatsu pin screw.