JPS6388811U - - Google Patents

Description

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

第１図は、本考案の第１実施例における、外合
焦環１６と内合焦環１０の結合状態を示す斜視図
、第２図は、本考案の第１実施例における第１の
レンズ鏡筒ＬＡの断面図、第３図は上記第１のレ
ンズ鏡筒ＬＡの、第１レンズ群Ａ１〜第４レンズ
群Ａ４の、ズーム動作時及び合焦動作時のそれぞ
れの動きを示す図、第４図は、本考案の第２実施
例における第２のレンズ鏡筒ＬＢの断面図、第５
図は上記第２のレンズ鏡筒ＬＡの、第１レンズ群
Ｂ１〜第４レンズ群Ｂ４の、ズーム動作時及び合
焦動作時のそれぞれの動きを示す図、第６図は、
本考案の第１実施例における、外合焦環１６に設
けられたカム溝１７ａ，１７ｂの展開図、第７図
は、本考案の第２実施例における、外合焦環１６
及び内合焦環２０の結合状態を示す斜視図、第８
図は第７図の部分断面図、第９図は、本考案の第
３実施例における、外合焦環１６及び内合焦環２
０の結合状態を示す斜視図、第１０図は、第９図
の部分断面図、第１１図は、本考案の第４実施例
における、外合焦環１６に設けられたカム溝５０
ａ，５０ｂの展開図である。 FIG. 1 is a perspective view showing the coupled state of the outer focusing ring 16 and the inner focusing ring 10 in the first embodiment of the present invention, and FIG. 2 is a perspective view of the first lens in the first embodiment of the present invention. A sectional view of the lens barrel LA, FIG. 3 is a diagram showing the movements of the first lens group A1 to the fourth lens group A4 of the first lens barrel LA during zooming operation and focusing operation, respectively, FIG. 4 is a sectional view of the second lens barrel LB in the second embodiment of the present invention;
The figure shows the movements of the first lens group B1 to the fourth lens group B4 of the second lens barrel LA during zooming operation and focusing operation.
FIG. 7 is a developed view of the cam grooves 17a and 17b provided in the outer focusing ring 16 in the first embodiment of the present invention, and FIG.
and a perspective view showing the coupled state of the inner focusing ring 20, No. 8
The figure is a partial sectional view of FIG. 7, and FIG. 9 is an outer focusing ring 16 and an inner focusing ring 2 in a third embodiment of the present invention.
10 is a partial cross-sectional view of FIG. 9, and FIG. 11 is a perspective view showing a cam groove 50 provided in the outer focusing ring 16 in the fourth embodiment of the present invention.
It is a developed view of a and 50b.

Claims (1)

【実用新案登録請求の範囲】 光軸周りに回動される回動環と、この回動環に
嵌合する、光軸周りの回動を規制された移動環と
を備え、上記回動環と移動環のどちらか一方の光
軸方向の移動を規制し、回動環の回動により両環
の相対位置を変化させるレンズ鏡筒において、 上記回動環と移動環の一方の環に設けられた複
数種類のカム溝と、他方に設けられ、上記複数の
カム溝の内の一種類のカム溝に選択的に嵌入する
カムフオロワとからなるカム連結機構を有したこ
とを特徴とするレンズ鏡筒。[Claims for Utility Model Registration] A rotating ring that is rotatable around an optical axis, and a movable ring that is fitted into the rotating ring and whose rotation around the optical axis is restricted; In a lens barrel that restricts the movement of either of the rotating ring and the moving ring in the optical axis direction and changes the relative position of both rings by rotation of the rotating ring, a lens provided on one of the rotating ring and the moving ring. A lens mirror characterized by having a cam coupling mechanism comprising a plurality of types of cam grooves, and a cam follower provided on the other side and selectively fitting into one type of cam groove among the plurality of cam grooves. Tube.