JPS62137415U

JPS62137415U -

Info

Publication number: JPS62137415U
Application number: JP2388786U
Authority: JP
Priority date: 1986-02-22
Filing date: 1986-02-22
Publication date: 1987-08-29

Description

[Brief explanation of the drawing]

第１図は本考案に係るレンズ鏡筒の一実施例の
要部上半断面図、第２図はその分解斜視図、第３
図は本考案の他の実施例の要部上半断面図、第４
図は本考案の更に他の実施例の要部横断面図であ
る。１…固定筒、２，１２…レンズ保護筒、２ａ，
１２ａ…周溝、２ｂ…溝部、１２ｂ…凹部、３，
１３…保護部材、３ａ，１３ａ…弾性片部、３ｂ
，１３ｂ…突条部、３ｃ，１３ｃ…突部、４…押
えリング（リング部材）、４ａ…嵌合部。 FIG. 1 is an upper half sectional view of the main part of an embodiment of the lens barrel according to the present invention, FIG. 2 is an exploded perspective view thereof, and FIG.
The figure is an upper half sectional view of the main part of another embodiment of the present invention, the fourth
The figure is a cross-sectional view of a main part of still another embodiment of the present invention. 1... Fixed tube, 2, 12... Lens protection tube, 2a,
12a...circumferential groove, 2b...groove portion, 12b...recessed portion, 3,
13...Protection member, 3a, 13a...Elastic piece part, 3b
, 13b... protrusion, 3c, 13c... protrusion, 4... presser ring (ring member), 4a... fitting part.

Claims

[Claims for Utility Model Registration] 1. A circumferential groove is provided on the inner or outer periphery of the lens holding cylinder, and a cylindrical protective member has a plurality of elastic pieces in the optical axis direction and the elastic pieces have a plurality of elastic pieces on the circumference. A ring member is attached to the protective member so that the protective member is positioned at the tip of the lens barrel by providing a protrusion in the circumferential direction that engages with the groove, and reducing the elasticity of the elastic piece. A lens barrel configured such that the protective member is engaged with the inner periphery or the outer periphery and comes off only when excessive force is applied. 2. The lens barrel according to claim 1, wherein the protective member is attached to a lens holding barrel in which the lens group moves in the optical axis direction by rotation. 3. The lens barrel according to claims 1 and 2, wherein the protective member and the ring member are attached so as to be relatively adjustable around the optical axis.