JPH0289412U - - Google Patents
Info
- Publication number
- JPH0289412U JPH0289412U JP16769288U JP16769288U JPH0289412U JP H0289412 U JPH0289412 U JP H0289412U JP 16769288 U JP16769288 U JP 16769288U JP 16769288 U JP16769288 U JP 16769288U JP H0289412 U JPH0289412 U JP H0289412U
- Authority
- JP
- Japan
- Prior art keywords
- barrel
- movable
- cam
- cover member
- interlocked
- 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
- 238000006073 displacement reaction Methods 0.000 claims 2
- 239000013013 elastic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案の一実施例を示すズームレンズ
鏡胴の断面図、第２図は上記ズームレンズ鏡胴の
構成部品の一部分を示す斜視図、第３図は移動筒
の前進によりはみ出た直進孔をカバー部材が覆つ
ている動作状態を示すズームレンズ鏡胴の部分的
な断面図、第４図ａはばね部分を一体形成したカ
バー部材の他の実施例を示す拡大正面図、第４図
ｂは当該カバー部材の側面図、第４図ｃは当該カ
バー部材の前面図、第５図は第４図のカバー部材
を装備させたズームレンズ鏡胴の一部を示す断面
図、第６図ａはばね部材を別途に設けたカバー部
材の他の実施例を示す拡大正面図、第６図ｂは当
該カバー部材の横断面図、第６図ｃは当該カバー
部材の前面図、第７図ａはゴム材で形成したカバ
ー部材の他の実施例を示す拡大正面図、第７図ｂ
は当該カバー部材の横断面図、第８図ａは移動筒
の直進孔に嵌合させる構成のカバー部材を示す拡
大正面図、第８図ｂは当該カバー部材の側面図、
第８図ｃは当該カバー部材の前面図、第９図は第
８図のカバー部材と移動枠のカムフオロアとの関
係を示す簡略図、第１０図及び第１１図は従来例
として示したズームレンズ鏡胴の断面図で、第１
０図はＷｉｄｅの状態を、第１１図はＴｅｌｅの
状態を示す図である。
２１……移動筒、２１ｃ……直進孔、２２……
固定筒、２２ｂ，２２ｃ……直進孔、２２ｅ……
凹条溝、２３……移動枠、２４……カム筒、３０
，３１……カムフオロア、３３，４１，４２，４
４，４５……カバー部材。
Fig. 1 is a cross-sectional view of a zoom lens barrel showing an embodiment of the present invention, Fig. 2 is a perspective view showing some of the components of the zoom lens barrel, and Fig. 3 is a cross-sectional view of a part of the zoom lens barrel that protrudes as the movable barrel moves forward. FIG. 4a is a partial cross-sectional view of the zoom lens barrel showing an operating state in which the cover member covers the straight-advance hole; FIG. Figure b is a side view of the cover member, Figure 4c is a front view of the cover member, Figure 5 is a sectional view showing a part of the zoom lens barrel equipped with the cover member of Figure 4, and Figure 6 Figure a is an enlarged front view showing another embodiment of the cover member in which a spring member is separately provided, Figure 6 b is a cross-sectional view of the cover member, Figure 6 c is a front view of the cover member, and Figure 6 is a front view of the cover member. Figure a is an enlarged front view showing another embodiment of the cover member made of rubber material, Figure 7b
is a cross-sectional view of the cover member, FIG. 8a is an enlarged front view showing the cover member configured to fit into the straight hole of the movable cylinder, and FIG. 8b is a side view of the cover member.
FIG. 8c is a front view of the cover member, FIG. 9 is a simplified diagram showing the relationship between the cover member in FIG. 8 and the cam follower of the moving frame, and FIGS. 10 and 11 are zoom lenses shown as conventional examples. A cross-sectional view of the lens barrel.
FIG. 0 shows the Wide state, and FIG. 11 shows the Tele state. 21...Moving tube, 21c...straight hole, 22...
Fixed tube, 22b, 22c... straight hole, 22e...
Concave groove, 23...Moving frame, 24...Cam cylinder, 30
, 31... Camu follower, 33, 41, 42, 4
4, 45...Cover member.
Claims (1)
ま進退する移動筒と、この移動筒に形成された直
進孔を通して上記カム筒に連動させたカムフオロ
アを有し当該移動筒内側で進退する移動枠とを備
え、これら移動筒及び移動枠に支持させたレンズ
の変位により光学的に変倍する構成のズームレン
ズ鏡胴において、上記直進孔を覆うようにした板
状の或いは筒状のカバー部材を上記移動筒の外面
に設けると共に、上記移動枠のカムフオロアをこ
のカバー部材を貫通させてカム筒に連動させる構
成としたことを特徴とするズームレンズ鏡胴。 (2) カム筒に連動されて筒軸方向に非回動のま
ま進退する移動筒と、この移動筒に形成された直
進孔を通して上記カム筒に連動させたカムフオロ
アを有し当該移動筒内側で進退する移動枠とを備
え、これら移動胴及び移動枠に支持させたレンズ
の変位により光学的に変倍する構成のズームレン
ズ鏡胴において、上記直進孔に弾性材からなるカ
バー部材を嵌合すると共に、このカバー部材には
直進孔に沿つたスリツトを設け、上記移動枠のカ
ムフオロアをこのスリツトを貫通させてカム筒に
連動させたことを特徴とするズームレンズ鏡胴。[Scope of Claim for Utility Model Registration] (1) A movable barrel that is interlocked with a cam barrel and advances and retreats without rotating in the direction of the barrel axis, and a cam follower that is interlocked with the cam barrel through a straight hole formed in the movable barrel. and a movable frame that moves forward and backward inside the movable barrel, the zoom lens barrel is configured to optically change magnification by displacement of the lens supported by the movable barrel and the movable frame. A zoom lens mirror characterized in that a plate-shaped or cylindrical cover member is provided on the outer surface of the movable barrel, and the cam follower of the movable frame is interlocked with the cam barrel by passing through the cover member. Torso. (2) A movable barrel that is interlocked with a cam barrel and advances and retreats without rotating in the direction of the cylinder axis, and a cam follower that is interlocked with the cam barrel through a straight hole formed in the movable barrel, and inside the movable barrel. In a zoom lens barrel that includes a movable frame that moves forward and backward, and that optically changes magnification by displacement of the movable frame and the lens supported by the movable frame, a cover member made of an elastic material is fitted into the rectilinear hole. A zoom lens barrel characterized in that the cover member is provided with a slit along the straight hole, and the cam follower of the movable frame is passed through the slit to be interlocked with the cam barrel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988167692U JPH0753055Y2 (en) | 1988-12-27 | 1988-12-27 | Zoom lens barrel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988167692U JPH0753055Y2 (en) | 1988-12-27 | 1988-12-27 | Zoom lens barrel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0289412U true JPH0289412U (en) | 1990-07-16 |
| JPH0753055Y2 JPH0753055Y2 (en) | 1995-12-06 |
Family
ID=31456216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988167692U Expired - Lifetime JPH0753055Y2 (en) | 1988-12-27 | 1988-12-27 | Zoom lens barrel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0753055Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677808A (en) * | 1979-11-28 | 1981-06-26 | Ricoh Co Ltd | Preventing device for internal reflection of zoom lens |
| JPS62110917U (en) * | 1985-12-28 | 1987-07-15 |
-
1988
- 1988-12-27 JP JP1988167692U patent/JPH0753055Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5677808A (en) * | 1979-11-28 | 1981-06-26 | Ricoh Co Ltd | Preventing device for internal reflection of zoom lens |
| JPS62110917U (en) * | 1985-12-28 | 1987-07-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0753055Y2 (en) | 1995-12-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |