JPS59143141A - Film feed device of projector - Google Patents
Film feed device of projectorInfo
- Publication number
- JPS59143141A JPS59143141A JP1784283A JP1784283A JPS59143141A JP S59143141 A JPS59143141 A JP S59143141A JP 1784283 A JP1784283 A JP 1784283A JP 1784283 A JP1784283 A JP 1784283A JP S59143141 A JPS59143141 A JP S59143141A
- Authority
- JP
- Japan
- Prior art keywords
- turret
- film
- cam
- sprocket
- pitch
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/32—Details specially adapted for motion-picture projection
- G03B21/43—Driving mechanisms
- G03B21/44—Mechanisms transmitting motion to film-strip feed; Mechanical linking of shutter and intermittent feed
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
Description
【発明の詳細な説明】
一般的な小型映写機においては投影σれるフィルムの一
駒一駒を順次静止させる必要がある。DETAILED DESCRIPTION OF THE INVENTION In a general small projector, it is necessary to sequentially stop each frame of the film to be projected.
このため、従来では例えば第１図ｆＳいし第３図のよう
な機構が用いられている。For this reason, mechanisms such as those shown in FIG. 1 fS to FIG. 3 have been conventionally used.
第１図の機構では、フレーム４に取付けた軸１ヲ支点と
するレバー２の先端にフィルムのパーフォレーションに
係合する送り爪３を設け、レバー２をカム機構５によっ
て上下および前後に１駆動してフィルムを一駒づつかき
落すようになっている。In the mechanism shown in FIG. 1, a lever 2 whose fulcrum is a shaft 1 attached to a frame 4 is provided with a feeding pawl 3 at its tip that engages with the perforations of the film, and the lever 2 is driven up and down and back and forth by a cam mechanism 5. It is designed to scrape off the film one frame at a time.
このため、かき落し音による騒音が発生する。Therefore, noise due to scraping sound is generated.
フィルムのパーフォレーションに係合するように送り爪
３に設けた係合突片の数はせいぜい２，３個でそれ以上
にできないため、パーフォレーションが数ｊ固以上破損
しているきフィルムが送れなくなるなとの問題がある。The number of engaging protrusions provided on the feed pawl 3 to engage with the perforations of the film is at most 2 or 3 and cannot be more than that, so if more than a few perforations are damaged, the film will not be able to be fed. There is a problem with this.
第２図、第３図に示すゼネバストップ機構は、連続回転
する１・駆動体６にピン７とカム８を設ケ、フィルムを
送るスゲロケットとともに間欠回転する従動車９にはピ
ン７に係合する複数の溝１０とカム８の外周ｔこ接触す
る複数の凹曲部１１を設けたものである。The Geneva stop mechanism shown in Figs. 2 and 3 has a pin 7 and a cam 8 installed in the driving body 1 and 6 that rotate continuously, and a driven wheel 9 that rotates intermittently together with the Sugerocket that feeds the film, which is connected to the pin 7. A plurality of concave curved portions 11 are provided which are in contact with a plurality of matching grooves 10 and the outer circumference t of the cam 8.
第２図の機構の場合、従動車９は４枚歯であり、フィル
ト−駒に対して９０°回転する。３５陀映画フィルｌ、
のように−駒のフィルムに対して４１固のパー７オレー
／ヨンがある場合にはスズロケットの歯数を４． Ｘ
４− ＝ １．６枚にすることができ、スプロケットの
歯とパーフォレーションが連続的に破損していても一定
限度内であれば送ることができる。しかし８馴あるいは
１６輔映画フィルムのように一駒のフィルムに対して１
個のパーフォレーションしかない場合には、スプロケッ
トの歯数は４枚（こしかならず、パーフォレーションと
は１゜２枚しか噛み合うことができないので、第１図の
送り爪３の噛合いと大差ない。In the case of the mechanism shown in FIG. 2, the driven wheel 9 has four teeth and rotates 90 DEG with respect to the filter piece. 35 movie film l,
- If there is a 41-hard par 7 orey/yon for the film of the piece, then the number of teeth on the tin rocket is 4. X
4- = 1.6 pieces, and even if the teeth and perforations of the sprocket are continuously damaged, it can be fed within a certain limit. However, like 8 or 16 movie films, one frame of film has one
If there are only 2 perforations, the number of teeth on the sprocket is only 4, and only 2 perforations can be engaged at 1°, so the engagement is not much different from the engagement of the feed pawl 3 in FIG.
このため、従動車９の回転を減速してスゲロケットに伝
達する方法がとられる。１／２に減速すればスゲロケッ
トば８枚にすることができる。しかし、減速装置が従動
車９とスプロケットの間に介在するため、ギヤーの偏芯
等がスゲロケットの回転むらや振動になって現われ、フ
ィルムが静止せず、画面動揺になる。For this reason, a method is adopted in which the rotation of the driven wheel 9 is decelerated and transmitted to the Suge rocket. If you slow down to 1/2, you can make 8 Suge Rockets. However, since the speed reduction device is interposed between the driven wheel 9 and the sprocket, eccentricity of the gear appears as uneven rotation and vibration of the Sugerocket, and the film does not stand still, causing the screen to oscillate.
これを解決するために第３図に示すように従動車９の歯
数を増やしたものも考えられるが、従動車９の歯数を増
やすと駆動体６が従動車９を回転駆動する角度が大きく
なる。すなわち、第２図では９０°であるが、第３図で
は１２ｏ０になっている。In order to solve this problem, it is possible to increase the number of teeth of the driven wheel 9 as shown in FIG. growing. That is, in FIG. 2, it is 90°, but in FIG. 3, it is 12o0.
駆動体６が一回転して、フィルムを一駒送るので、駆動
体６が従動車９を回転駆動している間はフィルムをかき
客している状態である。Since the drive body 6 rotates once and advances the film one frame, the film is being scratched while the drive body 6 rotates the driven wheel 9.
従って駆動体６が従動車９を駆動している角度が大きく
なれば、シャッタ角度も大きくしなけれはならなくなり
、映写ラングの光がそれだけ有効に使用されず画面が暗
くなってしまう。第１図の機構ではンヤツク角度は６０
°程度なので、第３図の方法の１２０°は大きすきて実
用にならない。Therefore, if the angle at which the driver 6 drives the driven wheel 9 increases, the shutter angle must also increase, and the light from the projection rung will not be used as effectively and the screen will become dark. In the mechanism shown in Figure 1, the jack angle is 60
The angle of 120° in the method shown in Fig. 3 is too large to be of practical use.
この発明は上記のような従来のフィルム送り装置の問題
を解決することを目的とするものである。The object of the present invention is to solve the problems of conventional film feeding devices as described above.
すなわち、この発明はフィルム送り用のスゲロケットに
直結したクレットの外周に複数のカムフォロアを等間隔
、かつ放射状に数例け、適宜の駆動機構に連動して連続
回転するカムには、前記タレットのカムフォロアと係合
してこのタンットヲ１ピッチ送るねじれ部と、タレット
を静止芒せる周方向の直線部とからなるウオームギヤ状
の歯を設りたもので、カムの歯の直線部からタレットの
カムフォロア間を通過中はカムフォロアが静止し、これ
に直結しているスプロケットも静止して、歯のねじれ部
がカムフォロア間を通過するさいにタレットがスプロケ
ットとともに１ピッチ回動する。That is, the present invention has several cam followers arranged radially at regular intervals on the outer periphery of a cullet directly connected to a film-feeding Sugerocket. It has worm gear-like teeth consisting of a twisted part that engages with the cam follower and moves the tongue one pitch, and a straight part in the circumferential direction that keeps the turret stationary. While passing between the cam followers, the cam follower remains stationary, and the sprocket directly connected to it also remains stationary, and when the twisted portion of the teeth passes between the cam followers, the turret rotates one pitch together with the sprocket.
以下にこの発明の詳細を添付図面に示す一実施例に基づ
いて説明する。The details of the present invention will be explained below based on an embodiment shown in the accompanying drawings.
第４図はこの発明の装置を組込んだ映写機のアバ−チャ
付近を示すもので、フィルム２１は力゛イドローラを経
て第１スズロケツト２２により送られ、アパーチャゲー
ト２３とブレラシャプレート２４の間を通り映写ランプ
２５で照射σれ、映写レンズ２６によりスクリーンに投
影される。FIG. 4 shows the vicinity of the aperture of a projector incorporating the device of the present invention, in which film 21 is fed by a first tin rocket 22 via a power idle roller, and passed between an aperture gate 23 and a blurring plate 24. The light is irradiated by a projection lamp 25 and projected onto a screen by a projection lens 26.
フィルム２１の間歇送りはスゲロケット２７によって行
なわれるがスプロケット２７には第５図。The intermittent feeding of the film 21 is performed by a sprocket 27, as shown in FIG.
第６図Ｆこ示すタレット３１が軸２８により同軸に取付
けられており、このタレット３１はカム３２によって間
歇回転する。A turret 31 shown in FIG. 6F is mounted coaxially with a shaft 28, and is intermittently rotated by a cam 32.
タレット３１には複数（図では１． ＯＩＩＡ）のカム
フォロア３３を等間隔（こ、かつ放射状に取付けである
。カム３２けウオームギヤ状であって、−条の歯３０が
利いており一回転でカムフォロア３３を一ピッチ駆動す
る。カム３２の歯は回転角で６０゜程度の一部分だけリ
ード角が付いたねじれ部ａとなっており、この間でカム
フォロア３３を駆動し、その他の部分はリード角が００
の直線部ｌ）となってカムフォロア３３を静止σせる。A plurality of cam followers 33 (1.OIIA in the figure) are mounted on the turret 31 at equal intervals (and radially).The 32 cams are shaped like worm gears and have negative teeth 30, so that the cam followers 33 are installed in one rotation. 33 is driven by one pitch.The teeth of the cam 32 have a twisted part a with a lead angle of about 60 degrees in rotation angle, and the cam follower 33 is driven between this part, and the other part has a lead angle of 00 degrees.
, and the cam follower 33 becomes stationary σ.
スズロケット２７の前後にはガイドａ−ラ３４，３５を
設けてフィルム２１をスプロケットの外周適宜の範囲に
沿わせる。Guide rollers 34 and 35 are provided before and after the tin rocket 27, and the film 21 is guided along an appropriate range of the outer periphery of the sprocket.
この機構を映写機に使用することにより、ンヤツタ角度
が小σくなり、フィルムのパーフォレーションとスズロ
ケットの噛み合い枚数の大きな間歇運動するスプロケッ
トによるフィルム送り装置が可能になる。By using this mechanism in a movie projector, the projection angle becomes small σ, and a film transport device using an intermittent sprocket that engages a large number of film perforations and a tin rocket becomes possible.
従って明かるく、音が静かでフィルムのパーフォレーシ
ョンが多少痛んでいても無理なくフィルムを送る映写機
を提供することができる。なお、第５図、第６図（こお
いてカムフォロア３３を円筒状に画いているがカム３２
の歯形との組合せでカムフォロア３３をギヤのような形
状にしてもよい。Therefore, it is possible to provide a projector that is bright, quiet, and allows the film to be easily fed even if the perforations of the film are slightly damaged. Note that although the cam follower 33 is depicted as cylindrical in FIGS. 5 and 6, the cam 32
The cam follower 33 may be shaped like a gear in combination with the tooth profile.
第１図ないし第３図は従来のフィルム送り装置の各側を
示す正面図、第４図はこの発明の送り装置を実施した映
写機の一部を示す側面図、第５図はこの発明の送り装置
の一部切欠拡犬側面図、第６図は同上の平面図である。
２７ スプロケット、３０・・・歯、３１・・・タレッ
ト、３２・・・カム、３３・・カムフォロア、λ・・・
ねじれ部、■）・・・直線部。
特許出願人 映機工業株式会社
同 代理人 鎌 １）文 二1 to 3 are front views showing each side of a conventional film feeding device, FIG. 4 is a side view showing a part of a projector incorporating the feeding device of the present invention, and FIG. 5 is a front view showing each side of a conventional film feeding device. A partially cutaway enlarged side view of the device, and FIG. 6 is a plan view of the same. 27 Sprocket, 30... Teeth, 31... Turret, 32... Cam, 33... Cam follower, λ...
Twisted part, ■)... Straight part. Patent applicant: Eiki Kogyo Co., Ltd. Agent: Kama 1) Bun 2
Claims (1)
周に複数のカムフォロアを等間隔、かつ放射状に取付け
、適宜の、駆動機構に連動して連続回転するカムｌこは
、前記タレットのカムフォロアと係合してこのタレット
を１ピツチ送るねじれ部と、タレットを静止きせる周方
向の直線部とからなるウメ−ムギャ状の歯を設けた映写
機のフィルム装置。A plurality of cam followers are mounted radially at equal intervals on the outer periphery of a turret directly connected to a film feeding sprocket, and the cam, which continuously rotates in conjunction with an appropriate drive mechanism, engages with the cam follower of the turret. A film device for a projector equipped with spiky teeth consisting of a twisted part that moves the turret one pitch and a straight part in the circumferential direction that keeps the turret stationary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1784283A JPS59143141A (en) | 1983-02-04 | 1983-02-04 | Film feed device of projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1784283A JPS59143141A (en) | 1983-02-04 | 1983-02-04 | Film feed device of projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59143141A true JPS59143141A (en) | 1984-08-16 |
Family
ID=11954921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1784283A Pending JPS59143141A (en) | 1983-02-04 | 1983-02-04 | Film feed device of projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59143141A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160027613A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water having a housing which has high leakage prevention performance |
| KR20160027619A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water having a top plate alleviating water impact |
| KR20160027617A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water which filter part is easily positiond and engaged |
| KR20160027620A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water preventing galvanic corroson of filter element |
| KR20160027616A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water preventing leakcage of back flushing water |
-
1983
- 1983-02-04 JP JP1784283A patent/JPS59143141A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160027613A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water having a housing which has high leakage prevention performance |
| KR20160027619A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water having a top plate alleviating water impact |
| KR20160027617A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water which filter part is easily positiond and engaged |
| KR20160027620A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water preventing galvanic corroson of filter element |
| KR20160027616A (en) * | 2014-09-01 | 2016-03-10 | 주식회사 파나시아 | A candle type apparatus for filtering ballast water preventing leakcage of back flushing water |
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