JPH0352711U - - Google Patents

Description

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

第１図は本考案を適用したＣＣＴＶカメラ用レ
ンズ鏡胴の一実施例の要部の側断面図、第２図は
本考案の他の一実施例の要部の側断面図であり、
第３図はその要部の他の部分の側断面図である。 １……固定鏡胴、１ａ……マウントネジ、１ｂ
……案内穴、１Ｄ……インロー径、１ｍ……当付
面、１ｕ……当付面、２……操作軸、３……操作
部材、３ｕ……端面、４……鏡筒、４Ｄ……イン
ロー径、４ａ……案内溝、４ｂ……支持枠、５…
…板バネ、６……直進案内キー、７……ピント調
整ナツト、８……外装部材、８ａ……取付ネジ、
９……直進ガイドビス、１０……マウントネジ部
材、１０ａ……マウントネジ部、２１……固定鏡
胴、２１ｂ……案内穴、２１Ｄ……嵌合径、２１
ｍ……端面、２２ａ……マウントネジ、１２……
操作部材、１２ａ……ネジ部、１２ｂ……ネジ部
、１３……鏡筒、１３Ｄ……嵌合径、１４……飾
枠、１５……受駒、１６……直進案内キー、１７
……板バネ、１８……ストツパービス、１９……
加圧部材。 FIG. 1 is a sectional side view of a main part of an embodiment of a lens barrel for a CCTV camera to which the present invention is applied, and FIG. 2 is a sectional side view of a main part of another embodiment of the present invention.
FIG. 3 is a side sectional view of another essential part. 1...Fixed lens barrel, 1a...Mount screw, 1b
... Guide hole, 1D ... Pilot diameter, 1 m ... Abutment surface, 1u ... Abutment surface, 2 ... Operation shaft, 3 ... Operation member, 3u ... End face, 4 ... Lens barrel, 4D ... ...Pilot diameter, 4a...Guide groove, 4b...Support frame, 5...
...Plate spring, 6... Straight guide key, 7... Focus adjustment nut, 8... Exterior member, 8a... Mounting screw,
9... Straight guide screw, 10... Mount screw member, 10a... Mount screw part, 21... Fixed lens barrel, 21b... Guide hole, 21D... Fitting diameter, 21
m...End face, 22a...Mount screw, 12...
Operation member, 12a... Threaded portion, 12b... Threaded portion, 13... Lens barrel, 13D... Fitting diameter, 14... Decorative frame, 15... Receiving piece, 16... Straight guide key, 17
...Plate spring, 18 ... Stopper service, 19 ...
Pressure member.

Claims (1)

【実用新案登録請求の範囲】 (1) レンズ鏡胴の外装部材から極部的に突出し
た合焦操作の為の操作部材を回動して、合焦操作
を行う光学機器用レンズ鏡胴に於いて、光学系保
持部材の鏡筒４に直進機能を有した操作軸２を嵌
合し、該操作軸２に操作部材３を螺合させると共
に、ピント調整ナツト７を螺合し、光学機器本体
へ取付けるべき固定鏡胴１に該鏡筒４を直進繰出
し機構を介して結合し、同時に前記鏡筒４と固定
鏡胴１との間で板バネ５を挟持し、板バネ５の反
発力により、常に鏡筒４と固定鏡胴１の間隔をせ
ばめる方向へ、バネ加圧した状態に成し、前記操
作軸２の端面は固定鏡胴１に当付き、螺合された
ピント調整ナツト７の端面は鏡筒４と一体な支持
枠８の内側壁８ａに当付く様に挟持し、該ピント
調整ナツト７を回転する事により、光学系の無限
大位置の合焦操作を行うと共に、無限位置以外の
撮影距離変化に伴うレンズの繰出しに関しては、
操作部材３の回転により、ネジの推力と板バネの
反発力とにより、合焦操作を行う様に成し、且つ
、固定鏡筒１と一体的に設けたレンズ鏡胴の外装
部材を、前記光学機器本体に反対側からも取付け
可能に設けた事を特徴とする光学機器用レンズ鏡
胴の合焦装置。 (2) レンズ鏡胴の外装部材から、極部的に突出
した合焦操作の為の操作部材を回動して合焦操作
を行う光学機器用レンズ鏡胴において、操作部材
１２は左、右相反する方向の同一ピツチのネジ部
を有し、一方のネジ部１２ａは光学系保持部材の
鏡筒１３と螺合し、他の一方のネジ部１２ｂは光
学機器本体への取付部材の固定鏡胴２１へ固着し
た受駒１５と螺合し、前記鏡筒１３と固定鏡筒１
１とを操作部材１２の前記ネジ部１２ａ，１２ｂ
を介して結合させると共に、鏡筒１３を直進繰出
機構を介して結合し、同時に前記鏡筒１３と固定
鏡胴１１とで、板バネ１７を挟持し、板バネ１７
の反発力で鏡筒１３と固定鏡胴１１との間隔は、
常にせばめられる方向にバネ加圧された状態に成
し、且つ、固定鏡筒２１と一体的に設けたレンズ
鏡胴の外装部材を、前記光学機器本体に反対側か
らも取付け可能に設けたことを特徴とする光学機
器用レンズ鏡胴の合焦装置。 (3) 実用新案登録請求の範囲(2)項記載の装置に
於いて、操作部材１２と該操作部材の被螺合体の
間に加圧部材１９を挟持させた事を特徴とする光
学機器用レンズ鏡胴の合焦装置。[Scope of Claim for Utility Model Registration] (1) A lens barrel for optical equipment that performs focusing operations by rotating an operating member for focusing operations that protrudes partially from the exterior member of the lens barrel. Then, the operating shaft 2 having a linear movement function is fitted into the lens barrel 4 of the optical system holding member, and the operating member 3 is screwed onto the operating shaft 2, and the focus adjustment nut 7 is also screwed into the optical system. The lens barrel 4 is connected to the fixed lens barrel 1 to be attached to the main body via a linear advance mechanism, and at the same time, the leaf spring 5 is held between the lens barrel 4 and the fixed lens barrel 1, and the repulsive force of the leaf spring 5 is As a result, the spring pressure is always applied in the direction of narrowing the distance between the lens barrel 4 and the fixed lens barrel 1, and the end surface of the operating shaft 2 abuts the fixed lens barrel 1, and the screwed focus adjustment nut The end face of the lens barrel 4 is held so as to abut against the inner wall 8a of the support frame 8, and by rotating the focus adjustment nut 7, the infinity position of the optical system is focused. Regarding lens extension due to changes in shooting distance other than the infinity position,
The rotation of the operating member 3 causes the focusing operation to be performed by the thrust of the screw and the repulsive force of the leaf spring, and the exterior member of the lens barrel, which is provided integrally with the fixed barrel 1, is A focusing device for a lens barrel for an optical device, characterized in that it can be attached to the main body of the optical device from the opposite side. (2) In a lens barrel for an optical instrument in which focusing operation is performed by rotating an operating member for focusing operation that protrudes locally from the exterior member of the lens barrel, the operating member 12 is located on the left and right sides. It has threaded parts with the same pitch in opposite directions, one threaded part 12a is screwed into the lens barrel 13 of the optical system holding member, and the other threaded part 12b is used to fix the mirror of the mounting member to the optical equipment body. The lens barrel 13 and the fixed lens barrel 1 are screwed together with the receiving piece 15 fixed to the barrel 21.
1 and the threaded portions 12a, 12b of the operating member 12.
At the same time, the lens barrel 13 is connected via a linear advance mechanism, and at the same time, the lens barrel 13 and the fixed lens barrel 11 sandwich the leaf spring 17, and the leaf spring 17
Due to the repulsive force, the distance between the lens barrel 13 and the fixed lens barrel 11 is
The exterior member of the lens barrel, which is always spring-loaded in the direction of narrowing and is provided integrally with the fixed lens barrel 21, is provided so that it can be attached to the optical device body from the opposite side. A focusing device for a lens barrel for optical equipment, characterized by: (3) Utility model registration Claim (2) In the device described in claim (2), for optical equipment, characterized in that a pressure member 19 is sandwiched between the operating member 12 and the body to which the operating member is screwed together. Focusing device for lens barrel.