JPH0435111U

JPH0435111U -

Info

Publication number: JPH0435111U
Application number: JP7778790U
Authority: JP
Priority date: 1990-07-19
Filing date: 1990-07-19
Publication date: 1992-03-24

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例によるレンズ駆動
機構の構成図、第２図はこの考案の他の実施例に
よるレンズ駆動機構の構成図、第３図はレンズ駆
動機構を組立やすくするのを説明するための図、
第４図は従来のレンズ駆動機構の構成図、第５図
は従来の別のレンズ駆動機構の構成図である。図において、１はレンズを備えたレンズ枠、２
はレンズ枠１を駆動するための雌ネジ部、３はリ
ード軸、４はコイルバネ、５はレンズ枠１に固定
された腕部、６はバツクラツシユ除去用のナツト
、７は板バネ、８はナツト６の回転止めである。
なお、図中同一符号は同一又は相当部分を示す。 Fig. 1 is a block diagram of a lens drive mechanism according to an embodiment of this invention, Fig. 2 is a block diagram of a lens drive mechanism according to another embodiment of this invention, and Fig. 3 is a diagram showing a structure of a lens drive mechanism according to another embodiment of this invention. Diagram for explanation,
FIG. 4 is a block diagram of a conventional lens drive mechanism, and FIG. 5 is a block diagram of another conventional lens drive mechanism. In the figure, 1 is a lens frame equipped with a lens, 2
1 is a female thread for driving the lens frame 1, 3 is a lead shaft, 4 is a coil spring, 5 is an arm fixed to the lens frame 1, 6 is a nut for removing the backlash, 7 is a leaf spring, and 8 is a nut. 6 rotation stopper.
Note that the same reference numerals in the figures indicate the same or equivalent parts.

補正平３．６．１４実用新案登録請求の範囲を次のように補正する
。Amendment 3/6/14 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】ビデオカメラ、スチルカメラ、電子スチルカメ
ラ、プロジエクターなどレンズを移動させるレン
ズ駆動機構においてレンズを備えたレンズ枠と、
このレンズ枠に固定された雌ネジ部と、この雌ネ
ジ部と螺合して回転駆動されるリード軸と、この
リード軸に螺合されかつ前記雌ネジ部に対して軸
方向に可動に装着された第二の雌ネジ部と、これ
ら雌ネジ部の間に軸方向に力を加えるバネとを備
え、かくしてネジのバツクラツシユを取ることを
特徴とするレンズの駆動機構。[Claims for Utility Model Registration] A lens frame equipped with a lens in a lens drive mechanism for moving a lens such as a video camera, still camera, electronic still camera, or projector;
A female screw portion fixed to the lens frame, a lead shaft that is screwed into the female screw portion and driven to rotate, and a lead shaft that is screwed onto the lead shaft and movable in the axial direction with respect to the female screw portion. What is claimed is: 1. A lens drive mechanism comprising a second female threaded portion mounted thereon and a spring that applies force in the axial direction between these female threaded portions, thereby eliminating the unraveling of the screw.

Claims

[Scope of utility model registration request]

A lens frame equipped with a lens in a lens drive mechanism for moving a lens such as a video camera, still camera, electronic still camera, or projector;
A female screw portion fixed to the lens frame, a lead shaft that is screwed into the female screw portion and driven to rotate, and a lead shaft that is screwed onto the lead shaft and movable only in the axial direction with respect to the female screw portion. a second female threaded portion attached;
A lens drive mechanism characterized by comprising a spring that applies force in the axial direction between these female threaded portions, thereby taking the screw out of the way.