JPH0668595B2 - Method for manufacturing exposure control blades - Google Patents
Method for manufacturing exposure control bladesInfo
- Publication number
- JPH0668595B2 JPH0668595B2 JP61271463A JP27146386A JPH0668595B2 JP H0668595 B2 JPH0668595 B2 JP H0668595B2 JP 61271463 A JP61271463 A JP 61271463A JP 27146386 A JP27146386 A JP 27146386A JP H0668595 B2 JPH0668595 B2 JP H0668595B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- dowel
- exposure control
- notch
- control blades
- 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.)
- Expired - Fee Related
Links
Landscapes
- Diaphragms For Cameras (AREA)
- Shutters For Cameras (AREA)
Description
【発明の詳細な説明】 （発明の分野） 本発明は、銀塩カメラ、磁気記録カメラ等の絞り又はシ
ヤツター用の露出制御羽根の構造及び羽根の製造方法に
関するものである。Description: FIELD OF THE INVENTION The present invention relates to a structure of an exposure control blade for a diaphragm or a shutter of a silver salt camera, a magnetic recording camera and the like, and a method for manufacturing the blade.
（従来技術） 前記の露出制御用羽根のダボの固定に関する技術として
は、ＳＫ鋼、アルミ又はジュラルミン又はポリエステル
樹脂にダボをカシメ加工又は樹脂ダボを熱熔着加工によ
り羽根に固定していた。(Prior Art) As a technique for fixing the dowel of the exposure control blade, the dowel is fixed to the blade by caulking the dowel to SK steel, aluminum, duralumin, or polyester resin or the resin dowel.
前述、従来技術による絞り羽根は複数の絞り羽根が平面
で摺損するため、ダボ固定部のカシメ熱熔着による突出
部を生じ、該突出部により羽根平面を損傷し、又、羽根
平面の盛り上り等による平面性を損い、例えば小絞り側
での小絞り口径の精度の狂いを生じていた。As described above, in the diaphragm blade according to the related art, a plurality of diaphragm blades are slid on the flat surface, so that a protruding portion is formed by caulking heat welding of the dowel fixing portion, and the blade surface is damaged by the protruding portion, and the blade surface is raised. As a result, the flatness is impaired due to, for example, the accuracy of the small aperture diameter on the small aperture side is incorrect.
（発明の目的） 本発明では銀塩カメラ，磁気記録カメラ等の絞り，又
は，シャッター用の露出制御用羽根の構造及び羽根の新
規な製造方法を提供することを目的とする。(Object of the Invention) An object of the present invention is to provide a structure of a diaphragm for a silver salt camera, a magnetic recording camera or the like, or a structure of a blade for exposure control for a shutter, and a novel manufacturing method of the blade.
特に本発明では、前記羽根を複数枚組み合わわせて露出
開口径を決めるときの羽根の回転運動のための羽根の回
転支持するダボを羽根に射出成形するときに、ダボを羽
根に固定する製造方法を提案することを目的とする。Particularly, in the present invention, a manufacturing method of fixing a dowel to a blade when injection molding a dowel for rotationally supporting the blade for rotational movement of the blade when the exposure opening diameter is determined by combining a plurality of the blades The purpose is to propose.
（発明の構成及び作用） 第１図〜第３図は本発明の実施例で、第１図は一部に二
ケ所の切込みがある羽根材料。第２図はダボ成形時の金
型の動きと、第１図羽根の関係で、型板１には成形用樹
脂が充填されるスプールがあり、第１図羽根の切込み部
分の位置にある。突き出し部は前記スプールの先端にあ
り、第１図は羽根の切込みを型板１が下降する事により
開かせる。又、型板１には、もう１ケ所スプールがあ
り、先端にキヤビテイがある。型板２には型板１のキヤ
ビテイと突き合わせられる位置に突き出し部、型板１の
突き出し部と突き合わせられる位置にキヤビテイ部を持
っているがスプールはない。第３図は本発明技術により
製造された露出制御用羽根形状とダボ部断面である。(Structure and Action of the Invention) FIGS. 1 to 3 show an embodiment of the present invention, and FIG. 1 shows a blade material having two notches in part. FIG. 2 shows the relationship between the movement of the die during dowel molding and the blade in FIG. 1. The mold plate 1 has a spool filled with the molding resin, and is located at the position of the cut portion of the blade in FIG. The protruding portion is at the tip of the spool, and in FIG. 1, the notch of the blade is opened by lowering the template 1. Further, the template 1 has another spool and the tip has cavities. The template 2 has a protruding portion at a position where it can be abutted with the cavity of the template 1, and a cavity portion at a position where it can be abutted with the protrusion of the template 1, but there is no spool. FIG. 3 is a cross section of a dowel portion and the shape of a blade for exposure control manufactured by the technique of the present invention.
まず、第１図の様に羽根の所定の位置に切込みを入れ
る。次に第２図Ｉの様に第１図の羽根を挿入、保持す
る。そして、第２図II，第２図IIIの順に型板１又は型
板２を移動させ、第１図羽根切込部を型板のキヤビテイ
内へ突出させた後、射出成形を行ない、ダボの樹脂で埋
設保持する。適当な冷却時間を置いた後、型板１又は型
板２を移動させると第３図に示す露出制御用羽根を得
る。First, as shown in FIG. 1, a cut is made at a predetermined position of the blade. Next, as shown in FIG. 2I, the blade shown in FIG. 1 is inserted and held. Then, the mold plate 1 or the mold plate 2 is moved in the order of FIG. 2 and FIG. 2 to make the blade notch portion of FIG. 1 project into the cavity of the mold plate, and then injection molding is performed to remove the dowel. Hold embedded in resin. After an appropriate cooling time, the template 1 or the template 2 is moved to obtain the exposure control blade shown in FIG.
本発明にて製造される露出制御用羽根においては、第１
図の様な十文字状の切込み形状に限定する必要はなく、
ダボ射出成形後に羽根の一部がダボ内に埋設されていれ
ばよい。In the exposure control blade manufactured according to the present invention, the first
It is not necessary to limit to the cross-shaped cut shape as shown in the figure,
It is sufficient that a part of the blade is embedded in the dowel after the dowel injection molding.
（効果） 以上のように本願発明に依れば絞り羽根、又はシヤツタ
ー羽根に孔をあける事なく、切込みにてダボ内へ樹脂が
埋設保持されるため、ダボ保持強度の向上が図れる。
又、従来の様なカシメ加工、熱熔着加工によるよりも固
着強度が増す。更に、従来の加工では、羽根にダボをカ
シメ加工する装置に比し、装置自体が簡易となり、製造
コストの低減を図れた。(Effect) As described above, according to the present invention, since the resin is embedded and held in the dowel by cutting without making a hole in the diaphragm blade or the shutter blade, the dowel holding strength can be improved.
Further, the fixing strength is increased as compared with the conventional caulking and heat welding processes. Further, in the conventional processing, the apparatus itself is simpler than the apparatus for caulking the dowels on the blades, and the manufacturing cost can be reduced.
第１図はダボ成形前の羽根材料平面図。 第２図はダボ成形時の第１図羽根材料と金型の位置関係
断面図。 第３図は本願発明による露出制御用羽根。FIG. 1 is a plan view of a blade material before dowel molding. FIG. 2 is a sectional view of the positional relationship between the blade material and the die in FIG. 1 at the time of dowel molding. FIG. 3 shows an exposure control blade according to the present invention.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 宮本 康次 埼玉県秩父市大字下影森1248番地 キヤノ ン電子株式会社内 (72)発明者 市川 匡明 埼玉県秩父市大字下影森1248番地 キヤノ ン電子株式会社内 (72)発明者 尾形 幸治 埼玉県秩父市大字下影森1248番地 キヤノ ン電子株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Koji Miyamoto 1248 Shimokagemori, Chichibu, Saitama Prefecture, within Canon Electronics Co., Ltd. (72) Masaaki Ichikawa 1248 Shimokagemori, Chichibu, Saitama Prefecture Canon Electronics Incorporated (72) Inventor Kouji Ogata 1248 Shimokagemori, Chichibu City, Saitama Prefecture Canon Electronics Inc.
Claims (1)
記羽根にダボを成形する射出成形用金型に送り、前記羽
根の型締め押えの際に、前記金型の一部で前記切り込み
を押し上げて前記切り込みを前記金型のキャビテイ内に
突出させ、ダボを射出成形するときに前記切り込みをダ
ボの樹脂で埋設保持するようにしたことを特徴とする露
出制御用羽根の製造方法。1. A notch is provided at a dowel holding position of a blade and is sent to an injection molding die for forming a dowel on the blade. When the die is clamped down, the notch is cut by a part of the die. A method for manufacturing an exposure control blade, characterized in that the notch is pushed up to project into the cavity of the mold, and the notch is embedded and held by the resin of the dowel when the dowel is injection-molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61271463A JPH0668595B2 (en) | 1986-11-13 | 1986-11-13 | Method for manufacturing exposure control blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61271463A JPH0668595B2 (en) | 1986-11-13 | 1986-11-13 | Method for manufacturing exposure control blades |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63124040A JPS63124040A (en) | 1988-05-27 |
| JPH0668595B2 true JPH0668595B2 (en) | 1994-08-31 |
Family
ID=17500385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61271463A Expired - Fee Related JPH0668595B2 (en) | 1986-11-13 | 1986-11-13 | Method for manufacturing exposure control blades |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0668595B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5201891B2 (en) * | 2007-06-29 | 2013-06-05 | キヤノン株式会社 | Light amount adjusting blade and light amount adjusting device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51103150A (en) * | 1975-03-07 | 1976-09-11 | Matsushita Electric Industrial Co Ltd | Kinzokuseikibanheno goseijushiseibuhinno itsutaikeiseihoho |
| JPS605179B2 (en) * | 1978-04-11 | 1985-02-08 | 株式会社日立製作所 | Composite molded product of metal plate and resin |
| JPS6365024U (en) * | 1986-10-15 | 1988-04-28 | ||
| JPS6365023U (en) * | 1986-10-15 | 1988-04-28 | ||
| JPH0641223Y2 (en) * | 1986-10-15 | 1994-10-26 | キヤノン株式会社 | Exposure control blades |
| JPS63123029A (en) * | 1986-11-12 | 1988-05-26 | Canon Electronics Inc | Manufacture of blade for exposure control |
| JPS6378934U (en) * | 1986-11-12 | 1988-05-25 |
-
1986
- 1986-11-13 JP JP61271463A patent/JPH0668595B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63124040A (en) | 1988-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |