JPH0320320U - - Google Patents
Info
- Publication number
- JPH0320320U JPH0320320U JP8075789U JP8075789U JPH0320320U JP H0320320 U JPH0320320 U JP H0320320U JP 8075789 U JP8075789 U JP 8075789U JP 8075789 U JP8075789 U JP 8075789U JP H0320320 U JPH0320320 U JP H0320320U
- Authority
- JP
- Japan
- Prior art keywords
- blade
- base plate
- circumferential groove
- aperture
- blade base
- 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
- 230000001050 lubricating effect Effects 0.000 claims 2
- 239000011347 resin Substances 0.000 claims 2
- 229920005989 resin Polymers 0.000 claims 2
- 229930182556 Polyacetal Natural products 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 229920006324 polyoxymethylene Polymers 0.000 claims 1
Landscapes
- Diaphragms For Cameras (AREA)
- Shutters For Cameras (AREA)
Description
第１図は本考案の実施例である絞り装置を示す
上半断面図、第２図は従来例の絞り装置をレンズ
鏡筒と共に示す上半断面図、第３図は第２図に示
す羽根地板の周溝の部分拡大図、第４図は第２図
に示す絞り装置のＡＡ断面図である。第５図は本
考案の別実施例である絞り装置の分解斜視図であ
る。
主要部分の符号の説明、２……羽根地板、３…
…絞り羽根、４……羽根駆動板、５……信号部材
、６……引張ばね、７……リング状部材。
Fig. 1 is an upper half sectional view showing an aperture device according to an embodiment of the present invention, Fig. 2 is an upper half sectional view showing a conventional aperture device together with a lens barrel, and Fig. 3 is a blade shown in Fig. 2. FIG. 4 is a partially enlarged view of the circumferential groove of the main plate, and is an AA sectional view of the throttle device shown in FIG. 2. FIG. 5 is an exploded perspective view of a diaphragm device according to another embodiment of the present invention. Explanation of symbols of main parts, 2...Blade base plate, 3...
...Aperture blade, 4...Blade driving plate, 5...Signal member, 6...Tension spring, 7...Ring-shaped member.
Claims (1)
る方向に相対移動する絞り羽根と、 該羽根地板の円周溝内を摺動移動する移動部材
を有し、該移動部材の移動に相応して該絞り羽根
を移動させることにより、絞り動作を行なわしめ
る羽根駆動板と、 該羽根地板の円周溝と該羽根駆動板の移動部材
とどちらか一方の摺動部に設けられた表面潤滑性
樹脂部材とからなる絞り装置。 ２ 前記表面潤滑性樹脂部材は、ポリアセタール
である請求項１記載の絞り装置。[Scope of Claim for Utility Model Registration] 1. A blade base plate having a circumferential groove; an aperture blade that moves relative to the blade base plate toward or away from the optical axis; and a blade that slides within the circumferential groove of the blade base plate. A blade drive plate that has a movable member and performs an aperture operation by moving the aperture blades in accordance with the movement of the movable member; and a circumferential groove of the blade base plate and movement of the blade drive plate. A squeezing device consisting of a member and a surface lubricating resin member provided on one of the sliding parts. 2. The squeezing device according to claim 1, wherein the surface lubricating resin member is polyacetal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8075789U JPH0320320U (en) | 1989-07-11 | 1989-07-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8075789U JPH0320320U (en) | 1989-07-11 | 1989-07-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0320320U true JPH0320320U (en) | 1991-02-27 |
Family
ID=31626093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8075789U Pending JPH0320320U (en) | 1989-07-11 | 1989-07-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0320320U (en) |
-
1989
- 1989-07-11 JP JP8075789U patent/JPH0320320U/ja active Pending