JPS6423014U - - Google Patents
Info
- Publication number
- JPS6423014U JPS6423014U JP11613487U JP11613487U JPS6423014U JP S6423014 U JPS6423014 U JP S6423014U JP 11613487 U JP11613487 U JP 11613487U JP 11613487 U JP11613487 U JP 11613487U JP S6423014 U JPS6423014 U JP S6423014U
- Authority
- JP
- Japan
- Prior art keywords
- lens barrel
- spring
- cam
- slope
- face
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000000452 restraining effect Effects 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 description 1
Description
第１図は、公知の一般例Ａ，Ｂ，Ｃを示した断
面図。第２図は、本考案に係る機構としての実施
例Ａ，Ｂ，Ｃ，Ｄを示した断面図。第３図は、前
部鏡筒本体、カム筒、抑え板およびビス等の構成
部材等から成る組立状態の外観斜視図である。第
４図は、本考案に係る機構で、Ｃバネを介在させ
て取付けた状態を示す本考案の代表的な実施例（
第２図Ａ）の場合の断面図。第５図は、実施例で
使用されるＣバネの形状を示したものである。
１……前部鏡筒本体、２，２ａ……カム筒、３
……Ｃバネ、４，４ａ……抑え板、５……ビス、
６……スペーサーリング、７……連動ビス。
FIG. 1 is a sectional view showing known general examples A, B, and C. FIG. 2 is a sectional view showing Examples A, B, C, and D as mechanisms according to the present invention. FIG. 3 is an external perspective view of the assembled state consisting of structural members such as the front lens barrel main body, cam barrel, restraining plate, and screws. FIG. 4 is a typical embodiment of the present invention, showing a mechanism according to the present invention, in which it is attached with a C spring interposed.
A sectional view in the case of FIG. 2A). FIG. 5 shows the shape of the C spring used in the example. 1... Front lens barrel body, 2, 2a... Cam barrel, 3
... C spring, 4, 4a ... holding plate, 5 ... screw,
6...Spacer ring, 7...Interlocking screw.
Claims (1)
、環状のバネを介在させ、バネの衝合する面には
斜面を施すことにより、焦点の調整後の環境変化
に起因するトルク変動を軽減し、スラスト方向の
遊隙に基づく焦点補正を自動的にできるようにし
た機構を有することを特徴とする鏡筒のカム筒調
整機構。 (2) カム筒２のカメラ用マウント側における端
面に、光軸と交叉する或る角度をもつた斜面を施
し、この斜面と抑え板４との間にＣバネ３を介在
させて、抑え板４を前部鏡筒本体１にビス５をも
つて螺着した構造を有することにより、焦点の調
整後のトルク変動を軽減し、スラスト方向の遊隙
に基づく焦点補正の自動的な調整ができるように
した実用新案登録請求の範囲第(1)項に記載の鏡
筒のカム筒調整機構。 (3) カム筒２のカメラ用マウント側端面の反対
側端面と、前部鏡筒本体１の該端面が当接する面
との間に、Ｃバネ３を介在させるようにした実用
新案登録請求の範囲第(1)項に記載の鏡筒のカム
筒調整機構。[Claims for Utility Model Registration] (1) Adjustment of focus by interposing an annular spring between the end face of the cam cylinder and the abutting face, and providing a slope on the abutting face of the spring. A cam barrel adjustment mechanism for a lens barrel, characterized by having a mechanism that reduces torque fluctuations caused by subsequent environmental changes and automatically performs focus correction based on play in the thrust direction. (2) The end face of the cam barrel 2 on the camera mount side is provided with a slope having a certain angle that intersects the optical axis, and a C spring 3 is interposed between this slope and the restraining plate 4, so that the restraining plate 4 is screwed onto the front lens barrel body 1 with a screw 5, torque fluctuations after focus adjustment can be reduced, and focus correction can be automatically adjusted based on the play in the thrust direction. A cam barrel adjustment mechanism for a lens barrel according to claim (1) of the registered utility model. (3) A utility model registration request in which a C spring 3 is interposed between the end surface of the cam barrel 2 opposite to the end surface on the camera mount side and the surface of the front lens barrel body 1 that is in contact with the end surface. The cam barrel adjustment mechanism of the lens barrel described in scope item (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987116134U JPH0442810Y2 (en) | 1987-07-29 | 1987-07-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987116134U JPH0442810Y2 (en) | 1987-07-29 | 1987-07-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6423014U true JPS6423014U (en) | 1989-02-07 |
| JPH0442810Y2 JPH0442810Y2 (en) | 1992-10-09 |
Family
ID=31358394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987116134U Expired JPH0442810Y2 (en) | 1987-07-29 | 1987-07-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442810Y2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010145432A (en) * | 2008-12-16 | 2010-07-01 | Fujinon Corp | Lens barrel |
| WO2012176456A1 (en) * | 2011-06-24 | 2012-12-27 | パナソニック株式会社 | Lens advancing device, imaging device equipped with lens advancing device, and portable electronic device |
| JP2013007880A (en) * | 2011-06-24 | 2013-01-10 | Panasonic Corp | Lens feeder, imaging apparatus including lens feeder, and portable electronic apparatus |
| JP2013084016A (en) * | 2013-02-12 | 2013-05-09 | Cosina Co Ltd | Lens device and optical instrument |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360824U (en) * | 1976-10-26 | 1978-05-24 | ||
| JPS6098804U (en) * | 1983-11-29 | 1985-07-05 | コニカ株式会社 | lens barrel |
| JPS61153017U (en) * | 1985-03-12 | 1986-09-22 |
-
1987
- 1987-07-29 JP JP1987116134U patent/JPH0442810Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5360824U (en) * | 1976-10-26 | 1978-05-24 | ||
| JPS6098804U (en) * | 1983-11-29 | 1985-07-05 | コニカ株式会社 | lens barrel |
| JPS61153017U (en) * | 1985-03-12 | 1986-09-22 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010145432A (en) * | 2008-12-16 | 2010-07-01 | Fujinon Corp | Lens barrel |
| WO2012176456A1 (en) * | 2011-06-24 | 2012-12-27 | パナソニック株式会社 | Lens advancing device, imaging device equipped with lens advancing device, and portable electronic device |
| JP2013007880A (en) * | 2011-06-24 | 2013-01-10 | Panasonic Corp | Lens feeder, imaging apparatus including lens feeder, and portable electronic apparatus |
| CN103620469A (en) * | 2011-06-24 | 2014-03-05 | 松下电器产业株式会社 | Lens advancing device, imaging device equipped with lens advancing device, and portable electronic device |
| US9019625B2 (en) | 2011-06-24 | 2015-04-28 | Panasonic Intellectual Property Management Co., Ltd. | Lens advancing device, imaging device equipped with lens advancing device, and portable electronic device |
| JP2013084016A (en) * | 2013-02-12 | 2013-05-09 | Cosina Co Ltd | Lens device and optical instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0442810Y2 (en) | 1992-10-09 |
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