JPH0335532U - - Google Patents
Info
- Publication number
- JPH0335532U JPH0335532U JP9587789U JP9587789U JPH0335532U JP H0335532 U JPH0335532 U JP H0335532U JP 9587789 U JP9587789 U JP 9587789U JP 9587789 U JP9587789 U JP 9587789U JP H0335532 U JPH0335532 U JP H0335532U
- Authority
- JP
- Japan
- Prior art keywords
- lens hood
- protruding locking
- lens
- protrusion
- locking portion
- 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
- 230000003287 optical effect Effects 0.000 claims description 6
- 230000009194 climbing Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Blocking Light For Cameras (AREA)
Description
第１図は単焦点レンズに本考案を採用した実施
例の断面図、第２図は内筒を示す側面図、第３図
はレンズフードの正面図、第４図は第３図の−
線断面図、第５図はレンズフードの回転動作に
伴う第１突起部と第１凹部との動作を説明する図
、第６図はレンズフード４の収納状態での第２図
の−線矢視断面図、第７図はレンズフードの
各種状態における各突起部と各凹部との位置関係
を示す展開図である。
３…鏡筒としての内筒、４…レンズフード、３
１１…第１溝部としての第１凹部の光軸方向部分
、３１２…第２溝部としての第１凹部の周方向部
分、３２…第２溝部としての第２凹部、３１ａ…
凹部としての微小凹部、３１ｂ…突部としての周
方向傾斜部、３１ｃ…傾斜部としての光軸方向傾
斜部、３１ｄ…台部、４１…突起部としての第１
突起部、４２…突起部としての第２突起部、４１
ａ…突出係止部。
Fig. 1 is a sectional view of an embodiment in which the present invention is applied to a single focus lens, Fig. 2 is a side view showing the inner cylinder, Fig. 3 is a front view of the lens hood, and Fig. 4 is the same as Fig. 3.
5 is a diagram illustrating the movement of the first protrusion and the first recess as the lens hood rotates; FIG. The cross-sectional view and FIG. 7 are developed views showing the positional relationship between each protrusion and each recess in various states of the lens hood. 3... Inner tube as lens barrel, 4... Lens hood, 3
1 1 ...A portion in the optical axis direction of the first recess as a first groove, 31 2 ...A circumferential portion of the first recess as a second groove, 32...A second recess as a second groove, 31a...
Micro recess as a recess, 31b... Circumferential inclined part as a protrusion, 31c... Optical axis direction inclined part as an inclined part, 31d... Stand part, 41... First as a protrusion
Protrusion, 42...Second protrusion as a protrusion, 41
a...Protruding locking part.
Claims (1)
前方に引き出された使用位置と後方に引き込まれ
た収納位置の間で移動されるレンズフード４の組
み付け構造にして、 突起部４１，４２と該突起部を受容する溝部３
１，３２とからなる一対の一方が、上記鏡筒３側
の嵌装面に、他方が上記レンズフード４側の嵌装
面に互いに対をなすように形成され、 上記突起部４１，４２は周方向に断続的に配列
され、 上記溝部３１，３２は、光軸方向に延在して上
記レンズフード４の光軸方向の直進運動を案内す
る第１溝部３１１と、周方向に延在して上記レン
ズフード４の使用位置における光軸回り回転運動
を案内する第２溝部３１２，３２とからなり、 上記鏡筒３または上記レンズフード４のいずれ
かの嵌装面に設けられた突出係止部４１ａと、 上記突出係止部４１ａが設けられる面に対する
対向面に形成され、上記レンズフード４の使用位
置における回転運動に伴つて該突出係止部４１ａ
が弾接して昇降する斜面を有する突部３１ｂと、
この回転運動に伴つて上記突出係止部４１ａが該
突部３１ｂを乗り越えることによつて落ち込む凹
部３１ａと、 上記突出係止部４１ａが設けられる面に対する
対向面に形成され、上記レンズフード４の収納位
置への直進運動に伴つて該突出係止部４１ａが乗
り上げる斜面を有する傾斜部３１ｃと、収納位置
に達したとき上記突出係止部４１ａが該傾斜部３
１ｃを乗り越えて乗り上げ、弾接する台部３１ｄ
とを備えたことを特徴とする組込み式レンズフー
ドの組付け構造。[Claims for Utility Model Registration] A lens hood 4 that is fitted into a lens barrel 3 and is moved between a usage position where it is pulled out forward in the optical axis direction and a storage position where it is pulled back with respect to the lens barrel 3. The assembly structure includes protrusions 41 and 42 and a groove 3 that receives the protrusions.
1 and 32, one of which is formed on the fitting surface on the lens barrel 3 side and the other on the fitting surface on the lens hood 4 side, and the protrusions 41 and 42 are formed as a pair. The grooves 31 and 32 are arranged intermittently in the circumferential direction, and the first grooves 31 and 32 extend in the optical axis direction and guide the rectilinear movement of the lens hood 4 in the optical axis direction. and second groove portions 31 2 and 32 for guiding the rotational movement around the optical axis of the lens hood 4 in the use position, and a protrusion provided on the fitting surface of either the lens barrel 3 or the lens hood 4. A locking portion 41a is formed on a surface opposite to the surface on which the protruding locking portion 41a is provided, and as the lens hood 4 rotates in the use position, the protruding locking portion 41a
a protrusion 31b having a slope that rises and falls in elastic contact with the protrusion 31b;
A concave portion 31a into which the protruding locking portion 41a falls by climbing over the protrusion 31b with this rotational movement, and a surface opposite to the surface on which the protruding locking portion 41a is provided are formed on the lens hood 4. an inclined part 31c having a slope on which the protruding locking part 41a rides up as the protruding locking part 41a rides up as it moves straight to the storage position;
The platform 31d climbs over 1c and comes into elastic contact with the platform 31d.
An assembly structure for a built-in lens hood, characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9587789U JPH0335532U (en) | 1989-08-15 | 1989-08-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9587789U JPH0335532U (en) | 1989-08-15 | 1989-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0335532U true JPH0335532U (en) | 1991-04-08 |
Family
ID=31645117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9587789U Pending JPH0335532U (en) | 1989-08-15 | 1989-08-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0335532U (en) |
-
1989
- 1989-08-15 JP JP9587789U patent/JPH0335532U/ja active Pending