JPS6026015U

JPS6026015U - Extension tube for interchangeable lens cameras

Info

Publication number: JPS6026015U
Application number: JP11851083U
Authority: JP
Inventors: 本橋　正久
Original assignee: 昭光精器株式会社
Priority date: 1983-07-29
Filing date: 1983-07-29
Publication date: 1985-02-22
Also published as: JPH0210483Y2

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

[Brief explanation of the drawing]

第１図はこの考案によるエキステンションΦチューブの
構成を示す一部縦断側面図、第２図は同正面図、第３図
は同エキステンション・チューブの要部を示す斜視図、
第４図は同保持部とレンズ取付部の嵌合要部を示す部分
断面図、第５図は同保持部の背面図、第６図は同保持部
の分解図、第７図は同レンズ取付部の一部断側面図であ
る。１・・・繰出し機構、１ａ・・・繰出部、１ｂ・・・被
繰出一部、２・・・マウントリング、２ｂ・・・直進ガ
イド板、３・・・繰出直進リング、３ａ・・・直進溝、
３ｃ・・・アリ溝板、４・・・保持部、４ａ・・・アリ
溝、５・・・レンズ取付部、５ａ・・・クリックボール
溝、６・・・金属ボール、１０・・・交換レンズ。FIG. 1 is a partially longitudinal side view showing the configuration of the extension Φ tube according to this invention, FIG. 2 is a front view of the same, and FIG. 3 is a perspective view showing the main parts of the extension tube.
Fig. 4 is a partial sectional view showing the main parts of the fitting between the holding part and the lens mounting part, Fig. 5 is a rear view of the holding part, Fig. 6 is an exploded view of the holding part, and Fig. 7 is the same lens. FIG. 3 is a partially sectional side view of the attachment part. DESCRIPTION OF SYMBOLS 1... Feeding mechanism, 1a... Feeding part, 1b... Part to be fed, 2... Mount ring, 2b... Straight guide plate, 3... Feeding straight ring, 3a... straight groove,
3c...Dovetail groove plate, 4...Holding part, 4a...Dovetail groove, 5...Lens mounting part, 5a...Click ball groove, 6...Metal ball, 10...Replacement lens.

Claims

[Scope of utility model registration request]

A linear guide plate is provided protruding in the axial direction of the feeding part from one end of the feeding part of the feeding mechanism, and a linear guide plate is provided on one end of the circumferential surface of the feeding straight ring which is integrated in the axial direction with the feeding part of the mechanism. Along with providing a corresponding straight groove in the axial direction,
At the front end of this straight forward feeding ring, a dovetail groove plate, which is a single line in total, is provided in a radial direction projecting in a white shape, and at a rear position of the feeding mechanism, a dovetail groove plate corresponding to the dovetail groove plate of the straight forward feeding ring is provided. A holding part of an annular body having a dovetail groove provided on the rear surface is arranged so as to be slidable in the radial direction by fitting the dovetail groove to the dovetail plate, and the holding part has a circular arc inner diameter part. A lens mounting part having a plurality of click ball grooves on the spherical outer circumferential surface that can be fitted into the lens mounting part is rotatably fitted into the lens mounting part, and the click ball groove of the lens mounting part has a screw hole in the holding part. An interchangeable lens characterized by a metal ball housed in a metal ball that is elastically engaged and assembled in such a manner that it can swing in an arc around the axis at a specified angle around the entire circumference. Extension tube for camera.