JPH0367306U

JPH0367306U -

Info

Publication number: JPH0367306U
Application number: JP12941189U
Authority: JP
Priority date: 1989-11-06
Filing date: 1989-11-06
Publication date: 1991-07-01
Anticipated expiration: 2004-11-06
Also published as: JPH087375Y2

Description

[Brief explanation of the drawing]

第１図は本考案を適用したＣＣＴＶカメラ用レ
ンズ鏡胴の側断面図、第２図はその要部の側面図
、第３図は第２図の要部の正面図、第４図は駆動
板の支点を変えた他の実施例の要部の側断面図、
第５図は第４図の正面図、第６図は操作部材の取
付け方向を変えた他の実施例を示す側断面図、第
７図はその要部の側断面図、第８図は第７図の要
部の正面図である。１……固定鏡胴（固定体）、２……継環（固定
体）、２ａ……接触面、２ｂ……ねじ穴、３……
鏡筒（移動体）、３ａ……当接突起、３ｂ……ね
じ穴、４……飾枠、５……前群レンズ枠、６……
後群レンズ枠、７……操作部材、７ａ……支軸、
７ｂ……ねじ軸、８……駆動体、８ａ……当接孔
、８ｂ……固定支点、８ｃ……当接部、９……押
え環、１０……板バネ（弾性部材）、１１……廻
り止めビス。 Figure 1 is a side sectional view of a CCTV camera lens barrel to which the present invention is applied, Figure 2 is a side view of its main parts, Figure 3 is a front view of the main parts of Figure 2, and Figure 4 is a drive A side sectional view of the main part of another embodiment in which the fulcrum of the plate is changed,
5 is a front view of FIG. 4, FIG. 6 is a side sectional view showing another embodiment in which the mounting direction of the operating member is changed, FIG. 7 is a side sectional view of the main part, and FIG. FIG. 7 is a front view of the main part of FIG. 7; 1... Fixed lens barrel (fixed body), 2... Connecting ring (fixed body), 2a... Contact surface, 2b... Screw hole, 3...
Lens barrel (moving body), 3a...Abutment projection, 3b...Screw hole, 4...Decorative frame, 5...Front group lens frame, 6...
Rear group lens frame, 7...operation member, 7a...support shaft,
7b...Screw shaft, 8...Driving body, 8a...Abutting hole, 8b...Fixed fulcrum, 8c...Abutting portion, 9...Holding ring, 10...Plate spring (elastic member), 11... ...Stopping screw.

Claims

[Claims for Utility Model Registration] (1) A fixed body fixed to the main body of an optical device, a movable body provided movably along the optical axis with respect to the fixed body, and between the fixed body and the movable body. an optical system provided on the movable body, comprising an operating mechanism for moving the movable body relative to the fixed body via the operating mechanism; and an elastic member for elastically bringing the movable body and the fixed body into close contact with each other via the operating mechanism; In a focusing device for a lens barrel for an optical instrument having a mechanism that moves along an optical axis, the operating mechanism includes intermediate contact between a rotary operating member having a threaded shaft screwed into the movable body and a fixed body. with the part as a fixed fulcrum,
It consists of a driving body having one end in contact with the rotary operating member and the other end in contact with the movable body, and the amount of movement of one end of the driving body as the rotary operating member rotates is determined based on the fixed fulcrum. A focusing device for a lens barrel for an optical instrument, which is configured to transmit the amount of movement of a moving body to the other end at a ratio of 1 to 1, and perform focusing. (2) A fixed body fixed to the optical device main body, a movable body provided movably along the optical axis with respect to the fixed body, and a movable body provided between the fixed body and the movable body and relative to the fixed body. A mechanism for moving an optical system provided on the movable body along an optical axis, comprising an operating mechanism for moving the movable body by using the operating mechanism, and an elastic member for elastically bringing the movable body and the fixed body into close contact via the operating mechanism. In the lens barrel for an optical device, the operating mechanism has a rotating operating member having a threaded shaft screwed into the fixed body, and an intermediate abutting portion between the fixed body and the fixed body as a fixed fulcrum, and one end is connected to the rotating operating member. and a driving body, the other end of which is brought into contact with the movable body, and the amount of movement of one end of the driving body as the rotary operation member rotates is adjusted to the other end at a ratio based on the fixed fulcrum. A focusing device for a lens barrel for an optical instrument configured to transmit the amount of movement of a moving object and perform focusing. (3) Scope of Utility Model Registration In the device according to claim 1 or 2, the driving body is composed of a ring-shaped disc, and a fixed fulcrum is provided on one diameter of the disc, and a fixed fulcrum is provided on one diameter of the disc. A focusing device for a lens barrel for an optical instrument, wherein the one end and the other end are provided facing each other on diameters in orthogonal directions. (4) Utility Model Registration In the device according to claim 1 or 2, the driving body is composed of a notched ring-shaped circular arc plate, the one end is located at the middle top of the circular arc plate, and the circular arc plate A focusing device for a lens barrel for an optical instrument, characterized in that both ends of the notch become the other end symmetrically, and a fixed fulcrum is provided at a symmetrical position midway between the intermediate apex and both ends of the notch.