JPH0336980Y2 - - Google Patents
Info
- Publication number
- JPH0336980Y2 JPH0336980Y2 JP1984139235U JP13923584U JPH0336980Y2 JP H0336980 Y2 JPH0336980 Y2 JP H0336980Y2 JP 1984139235 U JP1984139235 U JP 1984139235U JP 13923584 U JP13923584 U JP 13923584U JP H0336980 Y2 JPH0336980 Y2 JP H0336980Y2
- Authority
- JP
- Japan
- Prior art keywords
- lens frame
- lens
- optical axis
- cam ring
- frame
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Focusing (AREA)
- Lens Barrels (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は、カメラのレンズ駆動装置におけるレン
ズ枠の支持構造に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a support structure for a lens frame in a camera lens drive device.
従来、カメラのレンズ駆動装置におけるレンズ
枠の支持構造の一形式に、第２図、第３図に示す
如く、レンズを担持するレンズ枠１と、周囲部２
ａが図示していないベース基板に固定され、前記
レンズ枠１との間に張り出した複数の弾性を有す
る舌片２ｂの先端に該レンズ枠１を支持するレン
ズ枠１の保持部材２と、前記レンズ枠１に放射状
に植設されたピン１ａを操作する光軸方向に傾斜
したカム３ａを備えるレンズ繰り出し用のカムリ
ング３とからなるものが知られている。なお、第
３図におけるカムリング３は平面的に展開して一
部が示されている。
Conventionally, as shown in FIGS. 2 and 3, one type of support structure for a lens frame in a camera lens drive device includes a lens frame 1 that supports a lens, and a peripheral portion 2.
a holding member 2 for the lens frame 1 that supports the lens frame 1 at the tip of a plurality of elastic tongues 2b protruding between the lens frame 1 and the lens frame 1; A cam ring 3 for feeding out a lens is known, which includes a cam 3a inclined in the optical axis direction for operating pins 1a installed radially in the lens frame 1. Note that a part of the cam ring 3 in FIG. 3 is shown expanded in a plan view.
ここで、第３図において、レンズ枠１は、カム
リング３が矢印Ａ方向に回動された時、矢印Ｂ方
向に変位することを主目的とするが、実際は、第
２図に示す如く、保持部材２の舌片２ｂが直線的
な単純形状であるので、レンズ枠１は回動しなが
ら矢印Ｂ方向へ変位し、換言すれば、矢印Ｃ方向
へ変位して、その矢印Ｂ方向の成分のみがレンズ
の繰り出し、繰り込みに機能するものである。 Here, in FIG. 3, the main purpose of the lens frame 1 is to be displaced in the direction of arrow B when the cam ring 3 is rotated in the direction of arrow A, but in reality, as shown in FIG. Since the tongue piece 2b of the member 2 has a simple linear shape, the lens frame 1 is displaced in the direction of arrow B while rotating.In other words, it is displaced in the direction of arrow C, and only the component in the direction of arrow B is displaced. functions to extend and retract the lens.
従つて、従来例では、レンズの所定の繰り出
し、繰り込み量を得るのに、カムリング３の作動
角を多く必要であると共に、レンズ枠１が矢印Ｂ
方向に対して直線的に変位しないので、カムリン
グ３におけるカム３ａの設計に難しさが伴つてい
た。 Therefore, in the conventional example, in order to obtain a predetermined amount of extension and retraction of the lens, a large operating angle of the cam ring 3 is required, and the lens frame 1 is
Since the cam 3a of the cam ring 3 is not displaced linearly in any direction, it is difficult to design the cam 3a of the cam ring 3.
本考案は、上述の如きレンズ駆動装置におい
て、レンズ枠が光軸方向に直線的に変位し得るよ
うにして、カムリングの作動角が小にしてレンズ
の所定の繰り出し、繰り込み量が得られ、また、
カムリングにおけるカムの設計が容易となるレン
ズ枠の支持構造を提供するものである。
The present invention provides a lens driving device as described above, in which the lens frame can be linearly displaced in the optical axis direction, the operating angle of the cam ring is made small, and a predetermined amount of lens extension and retraction can be obtained. ,
A support structure for a lens frame that facilitates the design of a cam in a cam ring is provided.
本考案の目的は、周囲部が固定され、レンズ枠
との間に張り出した複数の弾性を有する舌片の先
端に該レンズ枠を支持する保持部材において、そ
の舌片の形状を工夫することにより達成される。
The purpose of the present invention is to improve the shape of the tongue in a holding member that supports the lens frame at the tip of a plurality of elastic tongues that extend between the lens frame and the peripheral portion of which is fixed. achieved.
以下、本考案の実施例を、第１図に基づいて、
従来例と異なる点を中心に説明する。
Hereinafter, an embodiment of the present invention will be explained based on FIG.
The explanation will focus on the points that are different from the conventional example.
即ち、保持部材２に形成され、その先端にレン
ズ枠１を支持する弾性を有する舌片２ｂは、部分
２b1と部分２b2と両部分を連結する部分２b3とか
らなるＵ字形に形成され、部分２b1の保持部材２
に対する基部と、部分２b2のレンズ枠１の取付部
とが、光軸からのほぼ同一放射線上にあるように
設定されている。 That is, the elastic tongue piece 2b formed on the holding member 2 and supporting the lens frame 1 at its tip is formed into a U-shape consisting of a portion 2b 1 , a portion 2b 2 , and a portion 2b 3 connecting the two portions. , retaining member 2 of part 2b 1
The base portion of the lens frame 1 and the attachment portion of the lens frame 1 of the portion 2b2 are set to be on substantially the same ray from the optical axis.
従つて、レンズ枠１は、カムリング３の回動に
対して、回動方向の変位は少く抑えられ、ほぼ光
軸方向（矢印Ｂ方向）のみに変位する。即ち、カ
ムリング３の回動変位量が、直接的にレンズの繰
り出し、繰り込み量に変換される。 Therefore, with respect to the rotation of the cam ring 3, the displacement of the lens frame 1 in the rotation direction is suppressed to a small extent, and the lens frame 1 is displaced almost only in the optical axis direction (arrow B direction). That is, the amount of rotational displacement of the cam ring 3 is directly converted into the amount of extension and retraction of the lens.
以上の如く、本考案のレンズ枠の支持構造によ
ると、カムリングの回動変位に対して、レンズ枠
が光軸方向に直線的に変位するので、カムリング
の作動角が小にしてレンズの所定の繰り出し、繰
り込み量が得られ、またカムリングにおけるカム
の設計が容易となる実用上優れた効果を発揮する
ものである。
As described above, according to the lens frame support structure of the present invention, the lens frame is linearly displaced in the optical axis direction in response to rotational displacement of the cam ring. This provides an excellent practical effect in that the amount of extension and retraction can be obtained and the design of the cam in the cam ring is facilitated.
第１図は本考案の実施例を示した正面図、第２
図及び第３図は従来例を示した正面図及び側面図
である。
１……レンズ枠、１ａ……ピン、２……保持部
材、２ｂ……舌片、３……カムリング、３ａ……
カム。
Figure 1 is a front view showing an embodiment of the present invention, Figure 2 is a front view showing an embodiment of the present invention.
The figure and FIG. 3 are a front view and a side view showing a conventional example. 1... Lens frame, 1a... Pin, 2... Holding member, 2b... Tongue piece, 3... Cam ring, 3a...
cam.
Claims (1)
出して前記レンズの光軸方向に弾性を有する複数
の舌片の先端に該レンズ枠を保持するレンズ枠の
保持部材と、 前記レンズ枠を操作する光軸方向に傾斜したカ
ムを備えるレンズ繰り出し用のカムリングとから
なり、 前記カムリングの回動に対して、前記保持部材
における舌片の弾性作用により、前記レンズ枠を
光軸方向に進退させるレンズ駆動装置において、 前記保持部材における弾性を有する舌片は、Ｕ
字状に形成されていて、前記周囲部側の基部と前
記レンズ枠側の先端とが光軸から略同一放射線上
に位置するようにしたこと を特徴とするレンズ枠の支持構造。[Claims for Utility Model Registration] A lens frame that supports a lens, and a plurality of tongues whose peripheral portions are fixed and which protrude between the lens frame and have elasticity in the optical axis direction of the lens. It consists of a lens frame holding member that holds the frame, and a lens extending cam ring that includes a cam inclined in the optical axis direction that operates the lens frame, and the tongue piece of the holding member responds to rotation of the cam ring. In the lens driving device that moves the lens frame forward and backward in the optical axis direction by an elastic action of U.
1. A support structure for a lens frame, characterized in that the support structure is formed in a letter shape, and the base on the peripheral side and the tip on the lens frame side are located on substantially the same ray from the optical axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984139235U JPH0336980Y2 (en) | 1984-09-13 | 1984-09-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984139235U JPH0336980Y2 (en) | 1984-09-13 | 1984-09-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6153717U JPS6153717U (en) | 1986-04-11 |
| JPH0336980Y2 true JPH0336980Y2 (en) | 1991-08-06 |
Family
ID=30697614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984139235U Expired JPH0336980Y2 (en) | 1984-09-13 | 1984-09-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0336980Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2803896B2 (en) * | 1990-07-31 | 1998-09-24 | キヤノン株式会社 | Optical equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58144311U (en) * | 1982-03-20 | 1983-09-29 | 日本電産コパル株式会社 | Autofocus camera lens extension mechanism |
| JPS5953536U (en) * | 1982-09-29 | 1984-04-07 | 松下電器産業株式会社 | Optical head support device |
| JPS5978529U (en) * | 1982-11-18 | 1984-05-28 | フオスタ−電機株式会社 | Objective lens drive device |
-
1984
- 1984-09-13 JP JP1984139235U patent/JPH0336980Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6153717U (en) | 1986-04-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0336980Y2 (en) | ||
| JPH0216337Y2 (en) | ||
| CN211926861U (en) | Locking mechanism of 3D (three-dimensional) line marking instrument | |
| JPS63174019U (en) | ||
| JPS58189917U (en) | rotary encoder | |
| JPS6033685U (en) | Tilt stage | |
| JPS59169108U (en) | Movable mechanism of parabolic antenna | |
| JPS5936521U (en) | chandelier | |
| JPS5819749Y2 (en) | damper ring | |
| JPS6044790B2 (en) | Motor brush holding device | |
| JPH0796358B2 (en) | Rotating member in electric eraser | |
| JPS6048978U (en) | Robot with freely rotatable chuck | |
| JPS5946006U (en) | Receiving antenna with wind direction indicator | |
| JPS6375505U (en) | ||
| JPH0371392U (en) | ||
| JPH0467870U (en) | ||
| JPH02117725U (en) | ||
| JPS60129034U (en) | Fixing mechanism for rotating parts | |
| JPS60152367U (en) | forehead attachment device | |
| JPS60190005U (en) | Contact structure of electrical parts | |
| JPS61126570U (en) | ||
| GB1520811A (en) | Radiation deflection systems | |
| JPS59161543U (en) | floating head support device | |
| JPS5888129U (en) | Chips for photodetector array | |
| JPH0320307U (en) |