JPH03125312U - - Google Patents
Info
- Publication number
- JPH03125312U JPH03125312U JP3346190U JP3346190U JPH03125312U JP H03125312 U JPH03125312 U JP H03125312U JP 3346190 U JP3346190 U JP 3346190U JP 3346190 U JP3346190 U JP 3346190U JP H03125312 U JPH03125312 U JP H03125312U
- Authority
- JP
- Japan
- Prior art keywords
- helicoid
- tube
- screws
- male
- female
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims 1
Description
第１図は、本考案の第１実施例を示すレンズ鏡
筒の要部分解斜視図、第２図は、上記第１図のレ
ンズ鏡筒の要部縦断面図、第３図は、上記第２図
のＺ部の拡大図、第４図は、本考案の第２実施例
を示すレンズ鏡筒の要部縦断面図である。
１，１１……ズーム枠（雌ヘリコイド筒）、１
ａ，１ｂ，１ｃ，１１ａ，１１ｂ，１１ｃ……雌
ヘリコイドネジ、２……固定枠、２ａ，２ｂ，２
ｃ……直進案内溝（長孔）、３，３１……移動枠
（雄ヘリコイド筒）、３ｄ，３ｅ，３ｆ……雄ヘ
リコイドネジ。
FIG. 1 is an exploded perspective view of a main part of a lens barrel showing a first embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of a main part of the lens barrel shown in FIG. FIG. 2 is an enlarged view of the Z section, and FIG. 4 is a vertical cross-sectional view of a main part of a lens barrel showing a second embodiment of the present invention. 1, 11...Zoom frame (female helicoid tube), 1
a, 1b, 1c, 11a, 11b, 11c... Female helicoid screw, 2... Fixed frame, 2a, 2b, 2
c... Straight guide groove (elongated hole), 3, 31... Moving frame (male helicoid tube), 3d, 3e, 3f... Male helicoid screw.
Claims (1)
一組とした雌ヘリコイドネジを複数組有し、内周
の径を該雌ヘリコイドネジの山径と略同径にした
雌ヘリコイド筒と、 上記雌ヘリコイドネジと螺合する雄ヘリコイド
ネジを形成した複数の突起を外周面に有する雄ヘ
リコイド筒と、 上記雌ヘリコイド筒と雄ヘリコイド筒との間に
嵌合すると共に、上記突起の直進案内を行う、軸
方向に延びる長孔を有する固定枠と、 を具備することを特徴とするレンズ鏡筒。[Claim for Utility Model Registration] It is made of plastic and has a plurality of sets of female helicoid screws each having several threads on its inner circumferential surface, and the diameter of the inner circumference is approximately the same as the thread diameter of the female helicoid screw. a male helicoid tube having a plurality of protrusions on its outer peripheral surface formed with male helicoid screws that are screwed into the female helicoid screws, and a male helicoid tube that fits between the female helicoid tube and the male helicoid tube, A lens barrel comprising: a fixed frame having an elongated hole extending in the axial direction, which guides the protrusion in a straight direction;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3346190U JPH03125312U (en) | 1990-03-28 | 1990-03-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3346190U JPH03125312U (en) | 1990-03-28 | 1990-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03125312U true JPH03125312U (en) | 1991-12-18 |
Family
ID=31537141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3346190U Pending JPH03125312U (en) | 1990-03-28 | 1990-03-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03125312U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007249250A (en) * | 2007-07-09 | 2007-09-27 | Fujinon Corp | Moving mechanism of lens |
| JP2010139916A (en) * | 2008-12-15 | 2010-06-24 | Hoya Corp | Lens-advancing/retracting mechanism |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS439991Y1 (en) * | 1964-10-14 | 1968-04-30 | ||
| JPS59229505A (en) * | 1983-06-13 | 1984-12-24 | Hitachi Ltd | Lens barrel for video camera |
-
1990
- 1990-03-28 JP JP3346190U patent/JPH03125312U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS439991Y1 (en) * | 1964-10-14 | 1968-04-30 | ||
| JPS59229505A (en) * | 1983-06-13 | 1984-12-24 | Hitachi Ltd | Lens barrel for video camera |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007249250A (en) * | 2007-07-09 | 2007-09-27 | Fujinon Corp | Moving mechanism of lens |
| JP4572914B2 (en) * | 2007-07-09 | 2010-11-04 | 富士フイルム株式会社 | Lens movement mechanism |
| JP2010139916A (en) * | 2008-12-15 | 2010-06-24 | Hoya Corp | Lens-advancing/retracting mechanism |
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