201013302 六、發明說明： 【發明所屬之技術領域】 光圈裝置。系關於攝办機、照相機、監視攝影機等光學機器用的 【先前技術】 口部··在糊成光路之開 ❹ 往復滑動，藉而對該光路進=。先圈葉片破此往相反方向 揭示有裝備步進馬達作為用於轉動二^^在專利文獻1中 獻2中揭示有使齒輪減逮機構介設二源者，在專利文 在使齒輪減速機構介設於步馬轉動桿之間者。 =，許齒第輪=，^ 專文獻2 ·日本特開平8-328080號公報 【發明内容】 (發明所欲解決之問題） 朗為在録輪減速機構介妨 古;㈣於步進馬達解析度的光達與轉動 jit式進行光圈控制，但當如專利文解析度，故能 累，軸與圓弧•輪等構成齒輪減速機構時領之技術藉, :口 f係的影響，故有包含步進馬達之驅動系t齒輪機構部分」 大’…、法實現小型佈局之問題。 、、為的安裴空間將彳 本發明思及上述情形，目的在於 步進馬達與驅動光圈葉片的轉，可使齒輪;) 包3步進馬達之驅_統的佈局之小型化叫之間’並且實; (解決問題之方式） 201013302 ，申請專利範圍第1項之發明的光圈裝置，其特徵在於，包含. 光圈基板:具有形成光路的開口部；2牧光圈葉片，以自由直線滑 動的方式設置在該光圈基板上，並使彼此往相反方向往復滑動驅 動，藉而對該光路進行光圈調節；轉動桿，為了驅動該光圈葉片， 將自1的轉動軸線朝向直交於該光圈基板的方向，以自由轉動的 方式安裝在該光圈基板；一對驅動銷，突出設置於從該轉動桿上 ^該，動軸線離開的位置，各自以自由滑動的方式卡合到在該各 ^圈葉片形成、且在與該光圈葉片之滑動方向直交的方向為g的 ^孔，並藉由該轉動桿的轉動，使該光圈葉片彼此往相反方向 ，，動j步進馬達，為了旋轉驅動該轉動桿，使自身的轉軸朝向 ^於該光板的方向，並安裝在該細基板；減魅輪機構， 桿無步料達的雜H減速錄機構藉由 J!各邛分構成.馬達齒輪(ρίη^)，安裝在該步進馬達的轉軸； 齒輪桿形成為-體，無鱗絲直贼透過中間 梦番申請甘專^範圍第2項之發明，係如申請專利範圍第1項之光圈 其中，在該光圈基板上設有光圈葉片驅動機構安裝部，且 動桿受到突出設置在該光圈葉片驅動機構安裝 持軸以自由旋轉的方式支持，另—方面，在該 ΐίί安裝罩蓋，在該馬達安裝罩蓋的外部安裝有該 馬達i轉伽料蓋形朗開σ，將絲在該步進 輪在今〒插入到該馬達安裝罩蓋的内側，該馬達齒 於ίίίί 側’直接或透過中間齒輪而間接地齋合 圈裝Πΐ範Ξΐ項之發明’係如申請專利範圍第2項之光 輪;該内;：:輪係由下列各部分構成··該馬達齒 輪上成一體設有屬合於該馬達齒輪的大齒 輪與屬合於该内齒輪的小齒輪，另一方面 .201013302 機構安裝部上’突出設置有中間齒輪支持軸，鄰接於該轉動桿用 支持軸，並穿過在該内齒輪的内側設置的該轉動捍上之缺口而貫 通該轉動桿’該中間齒輪受到該中間齒輪支持軸以自由旋轉的方 式支持。 申凊專利範圍第4項的發明’係如申請專利範圍第1至3項 中任一項之光圈裝置，其中，設有無背隙機構，藉由將該附設内 齒輪的轉動桿往單方向旋轉推壓’而吸收該内齒輪與該馬達齒輪 之間的齒輪背隙，該無背隙機構係由磁石與磁性構件所構成，該 磁石與磁性構件各自設置在該轉動桿側、與該光圈基板或馬達^ 裝罩蓋等固定側的一方與另一方，彼此使磁力相互作用並藉由磁 力而旋轉推壓該轉動桿，將該藉由磁力而旋轉推壓該轉動桿之區 域設定為：至少為光圈孔徑較小的小光圈側之該轉動桿的轉動區 域。201013302 VI. Description of the invention: [Technical field to which the invention pertains] Aperture device. It is used for optical equipment such as camera, camera, and surveillance camera. [Prior Art] The mouth is opened and closed in the light path of the paste. First, the blade is broken in the opposite direction, and the stepping motor is equipped as a device for rotating. In the patent document 1, it is disclosed in the patent document 1 that the gear reduction mechanism is provided with two sources, and the gear reduction mechanism is used in the patent text. It is placed between the steps of the horse. =, the first wheel of the tooth =, ^ Special document 2 · Japanese Patent Laid-Open No. Hei 8-328080 [Abstract] (The problem to be solved by the invention) Lang is in the recording wheel deceleration mechanism to guide the ancient; (d) in the stepper motor analysis Degree of light and rotation jit-type aperture control, but as the patent text analysis, it can be tired, the shaft and the arc, the wheel and other components constitute the gear reduction mechanism, the effect of the mouth f system, so there is The drive system t-gear mechanism part including the stepping motor has a large size. The ampoule space will be considered in the present invention, and the purpose is to drive the stepping motor and the driving aperture blade to make the gear;) the miniaturization of the layout of the package 3 stepping motor is called The invention relates to an aperture device according to the invention of claim 1, characterized in that it comprises: an aperture substrate: an opening portion forming an optical path; and a hail ring blade sliding freely in a straight line The method is disposed on the aperture substrate, and is driven to reciprocally slide in opposite directions, thereby performing optical aperture adjustment on the optical path; and rotating the rod, in order to drive the aperture blade, directing the rotation axis from 1 toward the direction of the aperture substrate Mounting on the aperture substrate in a freely rotatable manner; a pair of drive pins protrudingly disposed from the rotating lever and separated from the moving axis, each of which is slidably engaged to form a blade in the respective ring And in a direction orthogonal to the sliding direction of the aperture blade, the aperture is g, and by the rotation of the rotating lever, the aperture blades are opposite to each other, Into the motor, in order to rotationally drive the rotating rod, the rotating shaft of the rotating shaft is oriented in the direction of the light plate, and is mounted on the thin substrate; the fascinating wheel mechanism, the rod-free recording mechanism of the hybrid H is replaced by J! The motor gear (ρίη^) is mounted on the rotating shaft of the stepping motor; the gear rod is formed into a body, and the thief without the scale is applied for the invention of the second item in the middle of the dream. In the aperture of the first aspect of the invention, the diaphragm blade drive mechanism mounting portion is provided on the aperture substrate, and the movable lever is protruded and supported by the aperture blade drive mechanism mounting shaft to be freely rotatable, and the other is The ΐίί mounting cover is mounted on the outside of the motor mounting cover with the motor i-turning cover opening σ, and the wire is inserted into the inside of the motor mounting cover at the stepping wheel, the motor The invention of the invention is as follows: the invention of the invention is as follows: directly or through the intermediate gear, indirectly, the invention of the invention is the light wheel of the second item of the patent application; the inner;:: the train consists of the following parts: Integrated on the motor gear There is a large gear that is coupled to the motor gear and a pinion gear that is coupled to the internal gear. On the other hand, the 201013302 mechanism mounting portion is provided with an intermediate gear support shaft protrudingly adjacent to the support shaft for the rotating rod and is worn. A gap is formed in the rotating cymbal provided on the inner side of the internal gear to penetrate the rotating lever'. The intermediate gear is supported by the intermediate gear supporting shaft in a freely rotatable manner. The invention of claim 4 is the aperture device of any one of claims 1 to 3, wherein the backlash mechanism is provided by rotating the rotating rod attached to the internal gear in a single direction Pressing and absorbing the gear backlash between the internal gear and the motor gear, the backlash-free mechanism is composed of a magnet and a magnetic member, the magnet and the magnetic member are respectively disposed on the rotating rod side, and the diaphragm substrate Or one of the fixed sides of the motor cover, such as a cover, and the other side, magnetically interacting with each other and rotating the rotating rod by a magnetic force, and rotating the rotating rod by a magnetic force is set to at least: It is the rotating area of the rotating rod on the side of the small aperture with a small aperture aperture.
申請專利範圍第5項之發明，係如申請專利範圍第〗至3項 中任-項之光圈裝置’其中’該—對驅動銷，配置在相對於該轉 ，桿’旋轉中心而成點對稱的位置，在將該一對驅動銷位於與該 光圈葉片的滑動方向直交之直線上時的該直線定為基準線H吏 夾隔著該基準線的-側為縮小光圈孔徑的小光圈侧，另一辦 大光圈孔徑的大光關時，將該軸_轉_域設定為相對^ J基準線而，倚，使得在削、細嫩該基準線起的轉動角度範 圍，大於在该大光圈侧起的該基準線之轉動角度範圍。 (發明之效果） _ 1項之發明，因彻步進馬達驅動控制 先圈葉片故了簡早地達成細微的光圈控制 ϊ機進馬達之轉軸與驅動光圈葉片的轉== 你生t 二f馬達雜轉職轉位置義亦不虞發生錯 位，可發揮耐衝擊性與高可靠度。 mu錯 又’因為減速齒輪機構係藉由在步進馬達之轉軸絲的馬達 201013302 齒輪、與轉動桿形成為一體並與馬達齒輪直接或間接地嚅合之内 齒輪而構成，故可將步進馬達配置在盡可能靠近轉動桿之旋轉中 心的位置。所以，雖使減速齒輪機構介設於步進馬達與轉動桿之 間，仍可實現驅動系統之佈局的小型化。 另外，在利用外齒輪與馬達齒輪構成減速齒輪機構時，係將 步進馬達配置在遠離轉動桿之旋轉中心的位置。或者，即使在將 中間齒輪介設於外齒輪與馬達齒輪之間並將步進馬達配置在盡可 能内侧(靠近轉動桿之旋轉中心側)時，亦變成中間齒輪相較於轉動 桿之旋轉中心更加突出到外侧的形式。所以，驅動系統的尺寸容 易變大，難以實現小型的佈局。又，因此而易與其他零件發生干 涉，難以a史计迴避之。就此點而言，本發明使用内齒輪，藉而可 增加設計自由度並且實現小型的佈局。 "^，在形成内齒輪之環的端面、或靠近該處的位置設置驅動 銷，藉而提高驅動銷之支持剛性，並且可增加驅動銷的轉動半徑， 達成更大的光圈葉片滑動行程。 、、依據申請專利範圍第2項之發明，則可將細葉片驅動機構 (減速齒輪機構或馬達等)以簡單的方式組裝到光圈基板上。亦即， 首，將附設内齒輪的轉動桿安裝到光圈葉片,驅動機構安裝部之轉 ，桿用支持軸’其次將馬達安裝罩蓋組制光圈葉片驅動機構安 裝，之上。在此基礎上，將馬達齒輪從在馬達安裝罩蓋形成的開 口插入並直接或間接地嗡合於内齒輪，並且將步進 達安裝罩蓋。可藉由以上所述而簡單地完成組裝。 、… 、杳二據申請專利範财3項之發明，使中‘輪介餅步進馬 ^側^馬達齒輪、與轉動桿側的内齒輪之間而獲得更高的減速 匕’因而可將步進馬達的動作化為更細微的動作而傳達到轉動 广使料進馬達之錢分割數設定域微粗略，亦可 對先圈“細微地進雜置㈣，可進行絲賴光圈調節。 美板ί ’ 圈基板上設有中間齒輪用支持軸，故可在光圈 附設内齒輪的轉動桿與中間齒輪，並可從其上 、，且裝馬達女裝罩盍’即使有中間齒輪，亦可簡單地進行組裝。 201013302 亦即，雖然難以在光圈基板上設 由在附設内齒輪的轉動桿設置缺口， 兮支持軸，但藉 光圈基板上言曼置中間齒輪用支持轴 方式而在 光圈基板侧。藉此，相較於將先行安裝在 而言，更能達到組裝性的提升。 裝在馬達安裝罩蓋侧時 依據申請專利範圍第4項之發 在小光圈侧的區域中吸收從馬達齒 機構’可至少 可在必要區域中進行高精度的輪的齒輪背隙，因而 性構件作為構成無背隙機以 ο 成而達成商精度控制。例如，雖亦考心^簡單的構 的區域旋轉推壓附設《輪小光圈側 當於===:=::使步進馬達的解析度(相 光圈辇片料其、、隹^動角度為0(但θ<90〇)時，驅動銷所造成之 ί準線起的移動行程S成為「知ίηθ」。 △Θ的H整H iZV獅」之算式可知，相對於θ之單位變化量 =步進程之變化量仏，隨θ增大而減小。因觀 驅動光圈料者'之轉動角度’故在θ之値大的區域 倚，止、^駆動銷的轉動區域設定為相對於基準線而偏 側從基i線起的轉f圍’大於在大光圈 的方式達到在必要區域(小光圈區ΐ之猎光圈控^1定高=化以容易 【實施方式】 201013302 (實施發明之最佳形態） 以下，參照圖式說明本發明之實施形態。 圖1〜圖14係本發明之帛1實施形態^光圈裝置之說明圖，圖 i係顯示光職置之全_成社齡_，圖 Λ j 裝置的主要零件即光圈基板之構成的立體 / J二g 葉片驅動機觸部安裝轉動桿的狀態之立體圖圈二= 圖動?構安裝部之上安裝馬達安j蓋的“ 的狀=立=在圖6的馬達安裝罩蓋之上安裝步進馬達 ΐ8係取出光圈葉片之驅動系統的树並顯示其構成之 := 士逆二====== ii圖11係顯示細錢(最小光_夺的轉 夕位置”光圈葉片的關係之平面圖’圖12係顯示轉動桿 與ΐ動桿之轉動角度範圍的關係’圖13係顧示本 ΐϊ 之轉動_與比較例中轉動桿之轉動角度範圍的 也ϋ係祝明轉動桿之轉動角度範圍相對於基準線在小光圈 側與大光圈侧的分配之差異所帶來的優點。 ㈣難置係由下列各部分構成：略長方形板 ϊ ϊϊί由樹脂成形品構成;-對薄膜狀的光圈葉片12、 朵園彼此疊合的狀態下，以自由直線滑動的方式組裝在此 板面上；薄板狀的渡光片15，以可旋轉滑動的 片^葉片12、13之間；葉片蓋14，在將光圈葉 慮先裝在光圈基板ι〇一侧的板面上後，以被 的方式被覆在光圈基板ig上；光圈葉片驅動 機構ft慮光片驅動機構™，組裝在光圈基板10另一面側。 右隊^圈基板10及葉片蓋14靠近長邊方向一端的位置，形成 有用於械规(將圖1之縱軸線定為光軸狄之通路)之開口部 201013302 板10丄的另一端侧的位置設有光圈葉片驅動機 構女裝郤20，在鄰接於該光圈葉片驅動機^ H)之侧部，突出設置有___^^2()^圈基板 狀圈葉^12、13設有用於形成光圈開口的缺口 Ϊΐ 並且，藉由在棚基板1G上使光圈 ^方向彼此往減方向往復滑動，而可利 HA 驅動機構安裝部2G的細料驅動機構 M 在轉動桿4〇的一對驅動銷44a、44b而使光圈葉 ❹而播占^者，並以步進馬達110與齒輪減速機構70為中心 i 况的齒輪減速機構7〇由下列各部分構成：在步進馬 ^ 10的娜111(參照圖8)安裳的馬達齒輪112 :中間齒輪6〇 ; 後述附設内齒輪的轉動桿40(嚴格而言係内齒輪43)。 光/115具有對應於波長的穿透特性，在此係使用將紅 紅外線區域)之光線遮斷的紅外線滤鏡。在光圈基板 遽 動機構安裝部氣组裝的渡光片驅動機構HB，因 轉121使濾光片15旋轉滑麟而將濾、光片15插入到 從，上移除’故以2位置控制用之致動器12〇為中心 昭圖Ϊ。Ϊ 120藉由遽光片驅動機構安裝部30的底板31(參 ❹…、圖2)、與在其周圍豎立形成的豎立周壁32而支持。 此情況下的濾光片15係形成為薄膜狀，並插入到2枚光圈 1 12、13之微小間隙，以可沿著光圈葉片12、13滑動的方設 濾光片15藉由如此夾設於2枚光圈葉片12、13之間，而能 以光圈葉>} 12、13之表面作為導引面而滑順地滑動在 下進行穩定的插拔動作。 仏專膜狀 人濾光片15，將設在曲柄桿部15a之彎曲部的貫通孔15b，嵌 二到在光圈基板10之側部耳部突出設置的支軸1〇a，藉而以此支 ^〇a為中心並以可沿著光圈葉片12、13之面而轉動的方式受到 又，將犬出a又置在驅動桿121的驅動銷122卡合到在曲柄 桿部15a之前端側設置的長孔15c，並驅動致動器12〇使驅動銷 11 201013302 122轉動，藉而使濾光片15以支軸 拔T先路上或從先路上移除 光圈葉片12、13動作部附近，複數設_ 13的側緣部附近，以與各側 麵圈葉片12、 12c、13a、13b、13c。並且 式狄有縱溝12a、⑶、 的板面上於_ 、β方向自由直 鱗為在光圈基板 Φ 就用於驅動光圈葉片12」 ^動。 12、13的長邊方向端部，各自設有在在各光圈葉片 向直交的方向為長的長孔之滑動方 齒輪6〇、馬達安裝罩蓋80及^^〇=且裝有轉動桿40、中間 在其附近設立有s齒找有λ動^用支持軸25 ’ 同囹齡齒輪用支持轴26。又，在轉動桿用支持軸25 門:二I ’ °又有.止動部突起27，限制轉動桿40之轉動 $ ’十圓弧狀缺口 28，使轉動桿4〇的驅動銷44a、4牝穿透 Ϊ21的對側；缺口 29，用於供轉動桿40之止脫鉤48卡合(參 照圖8、圖9)。 、 ，動桿4〇,如圖3所示，在内周的一部分範圍具有内齒輪& f .環41，已切除周方向一部分；桿底板42，在該環41的 内&部-體化，並在中心部具有與内齒輪43之中心一致的中心孔 45，耳部41c、4M，在環41之外周部2處膨脹形成；一對驅動銷 44a、44b，突出設置於該耳部41c、4M的一端面(圖3中底端面）。 12 201013302 _的轉動動 與中間齒輪支持軸26發生干涉的=73，置在=用= 面突出設置有止脫鉤48,用於將此㈣_认在杯底板42的底 止在光圈葉片鱗機構安襄部L此附6又内齒輪的轉動桿40止脫卡 並且如圖4所示，將在桿底板42 、 山^ ^ 光圈葉片驅動機構安裝部2〇的底板21 =1^出1置 轉轉4G，將自身的又轉動軸“ 於細基板H)的方向’以自由轉_方式安裝在光圈基板 由I人ί圖8〜*圖11所示’驅動銷44a、44b各自以自 動二40口光圈葉片13、12的各長孔13d、12d，藉由轉 光咖12、13彼此往相反方向滑= —、士人卢止閣签:之底面突出設置的止脫鉤48,以可滑動的方 巧驅動機構安裝部2G的底板21之缺口29的ί Ξ 馨 =軸機構 突ϊ27 ’ ?而限制:動桿===:41 中b i，以;ς盥鐘餘f動桿40在受到轉動限制的範圍内進行轉動 口 47向^1^鱗4㈣生干涉的方式，從在桿底板42 形成的缺 62(表係在同一軸線上成一體設有大齒輪61與小嵩輪 去如圖5所示，藉由將中心孔66嵌合到該中間 自由轉動的方式钱在光圈基板1G上，並在 該狀恶=小，62嚷合於轉動桿4〇的内齒輪43。 60 8〇 ’在如上所述先行將轉動桿40及中間齒輪 覆轉動桿4〇及中間齒輪60的方式，如圖6所示， 文裝在光圈葉片驅動機構安裝部2〇之上，並發揮齒輪箱蓋之功能。 13 201013302 馬達安裝罩蓋80具有同光圈葉片驅動機構安裝 =2,大小的罩蓋主板81，在該罩蓋主板81的頂J 置有圓筒狀的馬達安裝壁82與電路板安裝壁88。圓符 ;壁82係在鮮相對的位置具有缺口者，在該缺 ίί if=1片二又，在藉由圓筒狀的馬達安裝壁82所包圍 。上帥分，财祕私錄騎⑽之馬達齒輪 又在罩蓋主板81頂面不妨礙馬達安裝的位置設有收線决 Θ 穿過包圍電線收納部83a的略成口字形框狀之物，當 =基㈣近的缺口 83b而將電線放入電線收納部83a時， 由止脫片83c保持使電線不脫出。 曰 蓋8G’藉由將細驅域構絲料側之 孔而正破^ °到在罩，主板81的底面細彡成之糊示的定位 卡爪24’藉由將光圈葉片驅動機構安裝部20侧的 卡合到在罩蓋主板81開口的鎖定孔84，而以精度良好的 方式女裝在光圈葉片驅動機構安裝部20。 之内所示，在此馬達安裝罩蓋8〇的馬達安裝壁82 構部者，並在筒狀的外殼内部收納旋轉機 電路拓! 有女裳托架113 ’在外殼的侧部安裝有 U3a。 、中’該安裝托架113具有鎖定片85所卡合之溝部 安f 馬達11G安裝到馬達安裝罩蓋8G的狀態下，在 ΪΪ溝部收卡合有鎖定片85。又，電路板115保持 將安裝在步^ΐ、!8。又’穿過在騎安鮮蓋8g形成的開口86， 裝罩蓋80內^達110之轉軸111的馬達齒輪112插入到馬達安 此從構成齒輪減速機構7〇的馬達齒輪n2輸入之驅動 -201013302 力，透過中間齒輪60的大齒輪61及小齒輪62而傳達到内齒輪 43，使得轉動桿40轉動。 另’如圖1所示，從步進馬達110的電路板115延伸有電線 116 ’在該電線〗16的前端附設連接器117。同樣地，在濾光片驅 動用的致動器120附設電路板125，在從該電路板125延^之電線 126的前端附設連接器127。 又，在此光圈裝置設有無背隙機構，藉由將附設内齒輪的轉 動桿40往單方向旋轉推壓，而吸收内齒輪43與馬達齒輪112之 間的齒輪背隙。此無背隙機構由磁石5〇與磁性鎖(磁性構件)5丨構 成，該磁石50與磁性銷(磁性構件)51彼此使磁吸力相互作用，並 Ό 藉由該磁吸力旋轉推壓轉動桿40,在馬達安裝罩蓋80的内面侧安 裝有磁石50，在轉動桿40之耳部41d形成的銷孔49插入固定有 磁性銷51。 此時，將藉由磁力而旋轉推壓轉動桿4〇之區域設定為：至少 為光^孔徑較小的小光圈側之轉動桿40的轉動區域。亦即，如圖 11所示，以小光圈階段中在磁石50與磁性銷51之間有必要的磁 吸力Q產生作用的方式，設定磁石5〇與磁性銷51的位置關係。 又，在此光圈褒置中，如圖1〇、圖11所示，在將一對驅動銷 44a、44b位於與光圈葉片12、13的滑動方向直交之直線上時的該 ❹/直線定為基準線K，並使夾隔著該基準線κ的一侧為縮小光圈孔 k的小光圈侧(圖11之Θ2的範圍），另一侧為增大光圈孔徑的大光 圈侧(圖10^之Θ1的範圍)時，將驅動銷44a、44b的轉動區域如圖 ^2所示，设定為相對於基準線κ而偏倚，使得在小光圈側(閉侧） 準線Κ起的轉動肖度範圍θ2大於在大細側_彳)從基準線 起的轉動角度範圍Θ1。因此，從基準線κ起的光圈葉片12、13 之行程，亦變成在小光圈侧從基準線艮起的行程幻大^在大光 線Κ起的行程S卜另，在圖12中，〇係驅動銷4知(4物 亦同轉動中心，R係驅動銷44a之轉動軌跡。 藉由如此s又疋驅動銷44a、44b的轉動區域，即使步進馬達n〇 的解析度(相當於步進馬達每一步的驅動鎖咏、桃之轉動角度） 15 201013302 =同，亦可在小光關對_孔徑細微地進行控制。以下說明 在令驅動銷44a的轉動半徑為代兮I、准 44a e<9〇〇)a, 】3從該基準線κ起的移動行程S成L隨12、 諸ί S=rsine之算式可知’相對於θ之單位變化量的 ίί ί程之變化量AS，隨θ增大而減小。因ΔΘ之Υ直係 44a之轉動角度，故在θ之値大的區』 =葉者，可對光圈葉片12、13細微地進行位置 施形態的光職置中，為實現此目標，係將驅動銷44a 鲜^帥倚，贿在小細側從基 =^範圍Θ1，並可藉由如此設定方式，以容易的方 要區域(小光圈區域)之光圈控制的高精度化。 Ρ ί 13产，示驅動銷在⑻本實施形態下(b)比較例下的轉動角 之比較例的情況下，在小光圈側(閉側)從基準線κ 與在大光圏侧(開侧)從基準線κ起的轉動角 ❹ 當如此设定時，光圈葉片12、13無論在小光圈侧或大光圈侧， 僅可從基準線κ起移動相同的行程Sb，而在小光圈側與大光圈侧 以相同條件驅動。 相對於此，在如(a)所示，使驅動銷44a全體的轉動角度範圍 幾乎無改變，並使轉動角度範圍平移到小光圈側之本實施形離的 情況下，如圖14所示，在小光圈侧與大光圈侧以相同條件驅動的 範，Θ1(光圈葉片之行程叫的外侧’可在小光圈側設定特有的驅 動範圍(相當於光圈葉片的行程之Ν3的部分）。此範圍的因為 屬於先前算式S=rsin0之Θ較大的區域，故AS相應於而變小。 亦即，即使以相同步進角度轉動驅動銷44a，光圈葉片的位移量AS 亦變小。所以’可進行高精度的定位控制。 16 201013302 達施形態之光，置，因為利用步進馬 ^與驅動光圈葉片12、13的轉動桿40之間； i疋為齒輪式而非摩擦輪式，故在有衝擊產生作用 ❹ 安裝i步構7G係㈣下祕部分構成··馬_輪H2， ϊί π?：ί：ί 盡可能靠近轉動桿40之旋轉中心的位置上 達-舆轉動桿 步進配ΐϊ 與馬達齒輪構成減速齒輪機構時，係將 ======巾心齡置。或者，即使在將 能内側(靠近轉動置在盡可 轉式 又’因為在軸_ 動銷44a、44b，故提高媒動^ 的=置設有驅 = 44a，的轉動半徑，可使=持 12剛==: 201013302 輪112從在馬達安裝罩蓋8〇形 輪60 ’並且將步進馬達11〇 ^ 86插入並嚅合於尹間齒 地完成組裝。 文褒在馬達安農罩蓋80，藉而可簡單 又，在本實施形態的光圈裝 馬達110侧的馬達齒輪112與韓 中間齒輪60介設於步進 得較大的減速比，因而可將步、^ 側的内齒輪43之間而獲 而傳達到轉動桿40。所以，即使^牛 的動作化為細微的動作 定為稍微粗略，亦可對光圈葉片12 的步進分割數設 進行高精度的光圈調節。 、、，田微地進行位置控制，可 光圈基板26，故可在 組裝馬達安裝 亦即，雖難以在光圈基板10上設置中間± 藉由在附_錄_鱗ί 的方式，在光圈基板10上設置中間齒 穿该缺口 47 齒輪60先行安農在光圈基板1〇側齒3支f 此將中間 安裝ί=;罩蓋8°側時而言，更=二輪60 :機構，至少石二:磁 ，_可树輯(尤㈣光_中進行 侔ϋίί用磁石50與磁性銷51作為構成無背隙機構之元 Ϊ看Lbi 非常簡單的構成而達到高精度控制。例如，雖 :慮=轉推壓附設内齒輪的轉動桿作 此：來將有彈簧的安裝變得複雑之缺點。就此點而言機2本= 形癌、的光難置之情況’只要在小細觸區域旋獅壓附設内 齒輪的轉鱗40貞彳在性能上即為充足，故獅磁石％與磁^銷 51之組合、，並藉此而在簡單的構成下得到充分且必要的性能。 ，圈 ❹The invention of claim 5 of the patent application scope is the aperture device of any one of the claims 1-3 to 3, wherein the pair of drive pins are arranged symmetrically with respect to the rotation center of the rod. The position when the pair of driving pins are located on a straight line orthogonal to the sliding direction of the diaphragm blade is defined as a small aperture side on which the reference line H吏 is sandwiched by the reference line and is a reduced aperture aperture. When another large aperture of the aperture aperture is set, the axis_turn_domain is set to be relative to the reference line, and the range of rotation angles of the reference line is larger than that on the large aperture side. The range of angles of rotation of the baseline. (Effect of the invention) _ 1 invention, because the stepper motor drive control of the first ring blade, so early to achieve a fine aperture control, the machine into the motor shaft and the drive aperture blade rotation == you live t two f The motor miscellaneous transfer position is also misplaced, and it can exert impact resistance and high reliability. Mu is wrong again because the reduction gear mechanism is formed by the gear of the motor 201013302 of the stepping motor, which is formed integrally with the rotating rod and directly or indirectly coupled with the motor gear. The motor is placed as close as possible to the center of rotation of the rotating rod. Therefore, even if the reduction gear mechanism is interposed between the stepping motor and the rotating lever, the layout of the drive system can be miniaturized. Further, when the reduction gear mechanism is constituted by the external gear and the motor gear, the stepping motor is disposed at a position away from the rotation center of the rotation lever. Alternatively, even when the intermediate gear is interposed between the external gear and the motor gear and the stepping motor is disposed as far as possible on the inner side (close to the rotation center side of the rotating lever), it becomes the center of rotation of the intermediate gear compared to the rotating lever. More prominent to the outside form. Therefore, the size of the drive system is easily increased, making it difficult to achieve a small layout. Moreover, it is easy to interfere with other parts, and it is difficult to avoid it. In this regard, the present invention uses an internal gear, thereby increasing design freedom and achieving a small layout. "^, the drive pin is provided at the end face of the ring forming the internal gear, or near the position, thereby increasing the support rigidity of the drive pin, and increasing the radius of rotation of the drive pin to achieve a larger diaphragm blade slide stroke. According to the invention of claim 2, the thin blade drive mechanism (reduction gear mechanism or motor, etc.) can be assembled to the diaphragm substrate in a simple manner. That is, first, the rotating lever with the internal gear is attached to the diaphragm blade, the drive mechanism mounting portion is rotated, and the lever support shaft' is mounted on the motor mounting cover assembly diaphragm blade drive mechanism. On this basis, the motor gear is inserted from the opening formed in the motor mounting cover and directly or indirectly coupled to the internal gear, and will be stepped up to the mounting cover. The assembly can be simply accomplished by the above. According to the invention of the patented Fancai 3, the middle wheel of the wheel is stepped on the side of the motor gear and the internal gear on the side of the rotating rod to obtain a higher deceleration 匕. The movement of the stepping motor is transmitted to the rotation of the material, and the amount of money division into the motor is slightly coarse, and the first circle can be finely mixed (four), and the aperture can be adjusted. The plate ί ' is provided with a support shaft for the intermediate gear on the base plate, so that the rotating rod and the intermediate gear of the internal gear can be attached to the aperture, and the motor can be attached thereto, and even if there is an intermediate gear, In the case of the aperture plate, it is difficult to provide a notch on the aperture substrate by the rotation lever attached to the internal gear, and the support shaft is provided on the aperture substrate by the support shaft of the intermediate gear. Therefore, it is better to achieve assembly improvement than when it is installed first. When it is mounted on the side of the motor mounting cover, it absorbs the motor teeth in the area on the small aperture side according to the fourth application of the patent application. mechanism' The gear backlash of the high-precision wheel can be performed at least in the necessary area, and thus the structural member is controlled as a non-backlash machine to achieve commercial precision control. For example, it is also considered to be a simple structure. Attached to the "small aperture side of the ===:=:: to make the resolution of the stepper motor (phase aperture 辇 料 其 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The movement stroke S from the ί line becomes "know θθ". The formula of △ Θ H whole H iZV lion can be seen, the unit change amount with respect to θ = the change amount of the step process 仏, decreases as θ increases Because of the angle of rotation of the person who drives the aperture material, the rotation area of the stop pin is set to be larger than the rotation of the base line from the base i line with respect to the reference line. The method of the large aperture is achieved in the necessary area (the aperture in the small aperture area is controlled by the height of the aperture). [Embodiment] 201013302 (Best Mode for Carrying Out the Invention) Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to FIG. 14 are explanatory views of the embodiment of the first embodiment of the present invention, and the aperture device is shown in FIG. The whole position of the light-receiving position _, the age of the _, the figure Λ j The main part of the device is the three-dimensional structure of the aperture substrate / J two g blade drive machine contact part of the state of the installation of the rotating rod of the three-dimensional figure circle = Figure installation Mounting the motor cover on the top of the section = "Version = Mounting the stepper motor on the motor mounting cover of Figure 6" 8 is the tree that extracts the drive system of the aperture blade and shows its composition: = 士逆二 = ===== ii Figure 11 is a plan view showing the relationship between the fine-grained money (the minimum light-receiving position) of the aperture blade. Figure 12 shows the relationship between the rotational angle range of the rotating lever and the raking lever. The rotation angle of the display _ and the range of the rotation angle of the rotation lever in the comparative example also show the advantage of the difference in the rotation angle range of the rotation lever with respect to the distribution of the reference line on the small aperture side and the large aperture side. (4) The refractory system is composed of the following parts: a slightly rectangular plate ϊ ϊϊ 由 is composed of a resin molded product; - a film-like aperture blade 12 and a garden are superposed on each other in a state of being freely linearly slid a thin plate-shaped light-receiving sheet 15 between the rotatably-slidable blades 12 and 13; the blade cover 14 is placed on the plate surface on the side of the aperture substrate ι The method is coated on the diaphragm substrate ig; the diaphragm blade drive mechanism ft is mounted on the other surface side of the diaphragm substrate 10 in consideration of the diaphragm driving mechanism TM. The right side of the substrate 10 and the blade cover 14 are located near the one end in the longitudinal direction, and the other end side of the opening portion 201013302 for the mechanical gauge (the vertical axis of FIG. 1 is defined as the path of the optical axis) is formed. The position is provided with a diaphragm blade driving mechanism, but in the side adjacent to the aperture blade driving machine, a ___^^2()^ ring-shaped substrate-shaped ring leaf 12, 13 is provided for The notch 光 forming the aperture opening Ϊΐ and the pair of driving of the fine material drive mechanism M of the HA drive mechanism mounting portion 2G on the rotary lever 4 藉 by reciprocating the apertures in the direction of decreasing the aperture direction on the shed substrate 1G The gears 44a and 44b are used to make the apertures of the apertures, and the gear reduction mechanism 7, which is centered on the stepping motor 110 and the gear reduction mechanism 70, is composed of the following parts: 111 (refer to FIG. 8) Motor gear 112 of Anshang: intermediate gear 6〇; a rotating lever 40 (strictly speaking, internal gear 43) to which an internal gear is attached will be described later. The light / 115 has a transmission characteristic corresponding to the wavelength, and an infrared filter that blocks the light of the red infrared region is used here. In the aperture plate driving mechanism HB assembled in the diaphragm mounting mechanism mounting portion, the filter 15 is rotated by the rotation 121, and the filter and the light sheet 15 are inserted into the upper portion, so that the position is controlled by 2 positions. The actuator 12 is used as the center. The crucible 120 is supported by the bottom plate 31 (see Fig. 2) of the trowel driving mechanism mounting portion 30, and the upright peripheral wall 32 formed upright around it. The filter 15 in this case is formed into a film shape and inserted into a small gap between the two apertures 12, 13 and 13 so as to be disposed so as to be movable along the aperture blades 12, 13 by the filter 15 Between the two aperture blades 12 and 13, the surface of the aperture leaf >} 12, 13 can be smoothly slid and smoothly slid under the surface as a guide surface. The 膜-shaped human-shaped filter 15 is fitted into the through hole 15b provided in the curved portion of the crank lever portion 15a, and is inserted into the support shaft 1〇a protruding from the side portion of the diaphragm substrate 10, thereby The support is centered and rotated in such a manner as to be rotatable along the faces of the aperture blades 12, 13, and the drive pin 122, which is placed on the drive lever 121, is engaged to the front end side of the crank lever portion 15a. The long hole 15c is provided, and the actuator 12 is driven to rotate the driving pin 11 201013302 122, so that the filter 15 is pulled out on the fulcrum or the first path to remove the vicinity of the action portion of the aperture blades 12 and 13. The plurality of side edge portions of the _ 13 are provided in the vicinity of the plurality of side ring blades 12, 12c, 13a, 13b, and 13c. Further, the pattern of the vertical grooves 12a and (3) is freely scaled in the _ and β directions, and is used to drive the diaphragm blades 12 on the diaphragm substrate Φ. The longitudinal end portions of 12 and 13 are each provided with a sliding square gear 6〇, a motor mounting cover 80, and a rotating rod 40, which are long holes long in the direction in which the respective aperture blades are orthogonal. In the middle, a s-tooth is provided in the vicinity of the support shaft 25' for supporting the shaft. Further, in the rotation lever for the support shaft 25, the door has two stoppers 27, and the rotation of the rotation lever 40 is restricted by the 'circular arc-shaped notch 28, so that the drive pins 44a and 4 of the rotation lever 4〇 The weir penetrates the opposite side of the weir 21; the notch 29 is used to engage the decoupling hook 48 of the turning rod 40 (refer to Figs. 8 and 9). , the moving rod 4〇, as shown in FIG. 3, has an internal gear & f. ring 41 in a part of the inner circumference, a part of the circumferential direction has been cut off; the rod bottom plate 42 is in the inner portion of the ring 41 And having a central hole 45 at the center portion coincident with the center of the internal gear 43, the ear portions 41c, 4M are formed to expand at the outer peripheral portion 2 of the ring 41; a pair of driving pins 44a, 44b are protruded from the ear portion One end of 41c, 4M (bottom end face in Figure 3). 12 201013302 _ The rotation of the _ and the intermediate gear support shaft 26 interferes with the rest of the yoke 26 The rotation lever 40 of the internal gear 6 and the internal gear are stopped and the card is rotated, and as shown in FIG. 4, the bottom plate 21 of the rod bottom plate 42 and the diaphragm drive mechanism mounting portion 2 is rotated. Turn 4G, turn its own rotating shaft "in the direction of the thin substrate H" in a free-rotation mode on the aperture substrate by I person ί Figure 8~* Figure 11 'Drive pins 44a, 44b each with automatic two 40 The long holes 13d, 12d of the aperture aperture blades 13, 12 are slid in opposite directions by the rotary coffee makers 12, 13 =, the sergeant Lu Zhige signature: the detachable hook 48 protruding from the bottom surface is slidable The yoke of the notch 29 of the bottom plate 21 of the mounting mechanism 2G of the genre drive mechanism 2G = the shaft mechanism protrusion 27'? and the limitation: the lever ===: 41 in the middle, the ς盥 余 f f 动 动 在 在Within the restricted range, the rotation port 47 is made to interfere with the scale 4 (4), and the missing portion 62 formed on the rod bottom plate 42 is formed integrally on the same axis. The gear 61 and the small wheel are removed as shown in FIG. 5, by fitting the center hole 66 to the middle freely rotating manner on the aperture substrate 1G, and in this case, the noise is small, 62 is coupled to the rotating rod 4 The inner gear 43 of the crucible is 60. The manner in which the rotating lever 40 and the intermediate gear cover the rotating lever 4〇 and the intermediate gear 60 are as described above, as shown in FIG. 6, the article is mounted on the diaphragm blade driving mechanism mounting portion 2 Above the raft, the function of the gearbox cover is exerted. 13 201013302 The motor mounting cover 80 has a cover main plate 81 of the same size as the aperture blade drive mechanism, and a cylindrical shape is placed on the top J of the cover main plate 81. The motor mounting wall 82 and the circuit board mounting wall 88. The round sign; the wall 82 has a notch at a fresh relative position, and in the absence of the piece 2, in the cylindrical motor mounting wall 82 Surrounded by the upper and lower points, the motor gear of the private secret ride (10) is provided with a wire-receiving position at a position where the top surface of the cover main plate 81 does not hinder the motor mounting, and passes through a slightly-shaped frame-like frame surrounding the wire storage portion 83a. When the electric wire is placed in the electric wire accommodating portion 83a as the base (four) near notch 83b, the retaining piece 8 3c keeps the wire from coming out. The cover 8G' is being broken by the hole on the side of the wire drive to the cover, and the bottom surface of the main plate 81 is finely folded into the positioning claw 24' By engaging the diaphragm blade drive mechanism mounting portion 20 side with the locking hole 84 opened in the cover main plate 81, the motor is mounted on the diaphragm blade drive mechanism mounting portion 20 in an accurate manner. The motor mounting wall 82 of the cover 8 is attached, and the rotating circuit is housed inside the cylindrical casing. There is a skirt holder 113', and U3a is attached to the side of the casing. In the state in which the locking bracket 85 is engaged with the mounting bracket 113, the motor 11G is attached to the motor mounting cover 8G, and the locking piece 85 is housed in the sulcus portion. Also, the circuit board 115 will remain mounted in steps ^, !8. Further, 'passing through the opening 86 formed in the riding cap 8g, the motor gear 112 of the rotating shaft 111 in the cover 80 is inserted into the driving of the motor from the motor gear n2 constituting the gear reduction mechanism 7〇- The force of 201013302 is transmitted to the internal gear 43 through the large gear 61 and the pinion gear 62 of the intermediate gear 60, so that the rotating lever 40 rotates. Further, as shown in Fig. 1, a wire 116 is extended from the circuit board 115 of the stepping motor 110, and a connector 117 is attached to the front end of the wire 16. Similarly, a circuit board 125 is attached to the actuator 120 for filter driving, and a connector 127 is attached to the front end of the electric wire 126 extending from the circuit board 125. Further, the aperture device is provided with a backlash-free mechanism, and the gear backlash between the internal gear 43 and the motor gear 112 is absorbed by the rotation of the rotary lever 40 to which the internal gear is attached in one direction. The backlash-free mechanism is composed of a magnet 5〇 and a magnetic lock (magnetic member) 5丨, the magnet 50 and the magnetic pin (magnetic member) 51 mutually interact with each other, and the rotary rod is pressed by the magnetic force. 40. The magnet 50 is attached to the inner surface side of the motor mounting cover 80, and the magnetic pin 51 is inserted and fixed to the pin hole 49 formed in the ear portion 41d of the rotating lever 40. At this time, the region where the rotating lever 4 is rotationally pressed by the magnetic force is set to at least the rotation region of the rotating lever 40 on the small aperture side where the aperture is small. That is, as shown in Fig. 11, the positional relationship between the magnet 5 〇 and the magnetic pin 51 is set such that the magnetic attraction force Q between the magnet 50 and the magnetic pin 51 acts in the small aperture stage. Further, in the aperture unit, as shown in FIGS. 1A and 11 , when the pair of drive pins 44a and 44b are positioned on a straight line orthogonal to the sliding direction of the diaphragm blades 12 and 13, the ❹/straight line is defined as The reference line K is such that the side on which the reference line κ is interposed is the small aperture side of the aperture stop k (the range of FIG. 11 and FIG. 2), and the other side is the large aperture side of the aperture aperture (FIG. 10) In the range of the first one, the rotation regions of the drive pins 44a and 44b are set to be biased with respect to the reference line κ as shown in Fig. 2, so that the rotation on the small aperture side (closed side) is started. The degree range θ2 is larger than the range of the rotation angle Θ1 from the reference line on the large thin side _彳. Therefore, the stroke of the aperture blades 12, 13 from the reference line κ also becomes a stroke that is lifted from the reference line on the small aperture side, and the stroke S which is picked up by the large ray. In Fig. 12, The driving pin 4 knows that (the four objects are also the same as the center of rotation, and the rotation of the R-system driving pin 44a. By the rotation of the driving pins 44a, 44b in this way, even the resolution of the stepping motor n〇 (equivalent to the stepping The drive lock of each step of the motor and the angle of rotation of the peach) 15 201013302 = The same can be used to control the aperture _ aperture finely. The following description shows that the radius of rotation of the drive pin 44a is 兮I, quasi 44a e< ;9〇〇)a, 】3 The movement stroke S from the reference line κ is L, and the equation of ί S=rsine is known as the change amount ί of the unit change amount with respect to θ. θ increases and decreases. Since ΔΘ is the angle of rotation of the straight line 44a, in the area where θ is large, the leaf can be placed in the position of the aperture blades 12 and 13 in a slight position. To achieve this goal, The drive pin 44a is fresh and handsome, and the bribe is on the small thin side from the base = ^ range Θ 1, and by such a setting, the aperture control of the easy square area (small aperture area) can be highly accurate. In the case of the comparative example of the rotational angle of the comparative example (b) in the present embodiment (b), the driving pin is on the small aperture side (closed side) from the reference line κ and the large aperture side (open). Side) The rotation angle θ from the reference line κ When set in this way, the aperture blades 12 and 13 can move only the same stroke Sb from the reference line κ on the small aperture side or the large aperture side, and on the small aperture side Drive on the same condition as the large aperture side. On the other hand, as shown in (a), in the case where the range of the rotation angle of the entire driving pin 44a is hardly changed, and the range of the rotation angle is shifted to the side of the small aperture side, as shown in FIG. In the case where the small aperture side and the large aperture side are driven under the same conditions, Θ1 (the outer side of the stroke of the aperture blade) can set a specific driving range on the small aperture side (corresponding to the portion of the stroke of the aperture blade Ν3). Since the AS belongs to a larger area than the previous formula S=rsin0, the AS becomes smaller correspondingly. That is, even if the driving pin 44a is rotated at the same step angle, the displacement amount AS of the diaphragm blade becomes small. High-precision positioning control. 16 201013302 The light of the Dasch form is set, because the stepping horse is used to drive the rotating rod 40 between the aperture blades 12 and 13; i疋 is a gear type rather than a friction wheel type, so Impact generation ❹ Installation i step 7G system (4) Lower part of the composition · Horse _ wheel H2, ϊί π?: ί: ί As close as possible to the center of rotation of the rotating rod 40 - 舆 Rotating rod stepping And the motor gear constitute a reduction tooth In the case of the mechanism, the ====== towel core is set. Or, even if it is able to be inside (close to the rotation and can be rotated and 'because of the axis_moving 44a, 44b, so increase the medium ^) With the rotation radius of the drive = 44a, you can make = 12 hold ==: 201013302 Wheel 112 from the motor mounted cover 8 轮 wheel 60 ' and insert the stepper motor 11 〇 ^ 86 and tie it to Yin The assembly is completed in a toothed manner. The motor is mounted on the motor ampere cover 80, and the motor gear 112 on the side of the aperture-mounted motor 110 of the present embodiment and the intermediate gear 60 are interposed in a larger step. Since the reduction ratio is obtained, the rotation of the internal gear 43 on the step and the side can be transmitted to the rotation lever 40. Therefore, even if the operation of the bull is set to be slightly rough, the step of the aperture blade 12 can be performed. The number of divisions is set to perform high-precision aperture adjustment. The position control of the field is performed, and the substrate 26 can be apertured. Therefore, it is possible to install the motor, that is, it is difficult to provide the intermediate on the aperture substrate 10. In the manner of recording _ scale ί, an intermediate tooth is placed on the aperture substrate 10 to pass through the notch 47 gear 60 First, Annon is on the aperture substrate 1〇 side teeth 3 branches f This will be installed in the middle ί=; when the cover is 8° side, more = two wheels 60: mechanism, at least stone two: magnetic, _ can be tree series (especially (four) light _ 进行 ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί ί 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁 磁:There is the shortcoming of the installation of the spring. In this case, the machine 2 is a type of cancer, and the light is difficult to set up as long as the snail is attached to the internal gear in the small touch area. The performance is sufficient, so the combination of the lion magnet % and the magnetic pin 51, and thereby obtaining sufficient and necessary performance under a simple configuration. Circle
Q 又，藉由將驅動銷44a、44b的轉動角度範圍設定為在小光 201013302 =與===倚’如上所述，即使步進馬達⑽的 亦了f小光圈側對光圈孔徑細微地進行控制。斤又係相 亦可Utnf高ίΐ光圈側之光圈調節的解析度， 娜光片(減片的Τ部分貼裝有 之成本增加的I 葉表面，因喊為麵裝置全體 齒輪ii機Μ馬達⑽，使用 圈側的解析度更上一層。所以，由s方式可使在小光 捨棄使用ND滤光片。亦即，即“態:方j而 且剔除將滤光片往光圈葉片安裝之要Ϊ高精度 、、可猎此而對於成本降低及生産性之提升有所貢獻。 51設置在彡^態巾雖將磁石5G設置在固定侧、將磁性銷 磁石5〇與磁性銷51亦可相反設置。亦即， e ίΙΪΪΙη Γΐϊ在轉動桿4G侧、將磁性銷等磁性構件設置在 裝罩蓋80等固定侧。又，亦可利用磁石構 又’上述實施形態雖顯示在齒輪減速機構7〇設置中間 之例’但亦可省略中間齒輪，並使步 直接地嚷合於轉動桿40的内齒輪43。 』Μ違齒輪112 圖15〜圖18係不使用中間齒輪之第2實施形態的光圈裝置之 構成圖，且圖I5係顯示全體構成之立體分解圖，圖係顯示 光圈基板上的光圈葉片驅動機構安裝部安裝轉動桿之狀態的立體 圖’圖17係顯示在圖16的光圈葉片驅動機構安裳部之上 ，安裝罩蓋的狀態之立體圖，圖18係顯示在圖17的馬達安農罩 蓋之上安裝步進馬達的狀態之立體圖。 、 19 201013302 ㈣態之差異係如下：因為無中間齒輪，故在 ，基板210的光圈葉片驅動機構安裝部22() ， 轴，因為直接使馬達齒輪112嚆合 曰齒輪用支 係，故步進馬達no的的關 達110之解析度而彌補無中間齒輪所造成的精度粗趟h 馬 【圖式簡單說明】 立體顯示本發明的第1實施形態之光圈裝置的全體構成之 體圖圖2係顯示同一光圈裝置之主要零件即光圈基板的構成之立 【3，示同樣零件即轉動桿之構成的立體圖。 動桿之狀態 圈基板上的光圈葉片驅動機構安裝部安裝轉 體圖圖5係顯示在圖4的轉動桿之上側安裝中間齒輪的狀態之立 ❹ 安裝細料鶴麟絲部之上安裝馬達 之立=_示在圖6的馬達安裝罩蓋之上安裝步進馬達的狀態 體圖圖8係僅取出光圈葉片的驅動系統之树並顯示其構成之立 ^ 1〇係ϋ圈f片之驅動系統的細葉片側所見之平面圖。 葉片的關圈全開(最絲11)轉畴之機位置與光圈 圖11係顯示光圈全閉(最小光圈)時轉動桿之轉動位置與光圈 20 201013302 葉片的關係之平面圖。 圖12係顯示轉動桿的驅動銷之位置與轉動桿之轉動角度範圍 的關係。 圖13係顯示本實施形態中轉動桿的轉動範圍與比較例中轉動 桿的轉動角度範圍之差異。 圖14係說明轉動桿之轉動角度範圍相對於基準線在小光圈侧 與大光圈侧的分配之差異所帶來的優點。 圖15係顯示本發明的第2實施形態之光圈裝置的全體構成之 立體分解圖。Q, by setting the range of the rotation angle of the drive pins 44a, 44b to be small light 201013302 = and === depending on the above, even if the stepping motor (10) is also small, the aperture side is finely performed on the aperture diameter. control. The jin and the phase can also be Utnf high ΐ ΐ ΐ ΐ 侧 侧 侧 调节 , 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜 娜The resolution of the circle side is further increased. Therefore, the s mode can be used to discard the ND filter in the small light. That is, the "state: square j and eliminate the need to install the filter to the aperture blade." High precision, can be hunted for the cost reduction and productivity improvement. 51 Set in the 彡 ^ state towel, the magnet 5G is set on the fixed side, the magnetic pin magnet 5 〇 and the magnetic pin 51 can also be reversed In other words, the magnetic member such as the magnetic pin is provided on the fixed side of the cover cover 80 on the side of the rotating lever 4G. Alternatively, the magnet structure may be used. In the middle example, the intermediate gear can be omitted, and the step is directly coupled to the internal gear 43 of the rotating lever 40. 』 齿轮 齿轮 112 112 112 图 112 112 112 图 图 图 图 图 图 图 112 112 光 光 光 光 光 光 光The composition of the figure, and Figure I5 shows the full FIG. 17 is a perspective view showing a state in which a rotating lever is attached to a mounting portion of a diaphragm blade driving mechanism on a diaphragm substrate. FIG. 17 is a view showing a state in which a cover is attached to the mounting portion of the diaphragm driving mechanism of FIG. FIG. 18 is a perspective view showing a state in which a stepping motor is mounted on the motor Annon cover of FIG. 17. The difference between the state of 19, 2010, and 1313 is the following: since there is no intermediate gear, the aperture blade of the substrate 210 is The drive mechanism mounting portion 22(), the shaft, because the motor gear 112 is directly coupled to the gear branch, the resolution of the stepping motor no is set to 110 to compensate for the accuracy caused by the intermediate gearless. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 2 is a perspective view showing the entire configuration of a diaphragm device according to a first embodiment of the present invention. FIG. 2 is a view showing a configuration of a diaphragm substrate which is a main component of the same diaphragm device. A perspective view of the configuration of the diaphragm blade drive mechanism mounting portion on the substrate of the moving rod. FIG. 5 is shown in the middle of the upper side of the rotating lever of FIG. The state of the wheel is installed ❹ Mounting the motor on the top of the crane. The state of the motor is mounted on the motor mounting cover of Fig. 6. The figure of the state in which the stepping motor is mounted on the motor mounting cover is shown in Fig. 8. Fig. 8 is the drive system for taking out only the diaphragm blades. The tree also shows the plan view of the thin blade side of the drive system of the frame. The blade is fully open (the most wire 11) and the position of the domain and the aperture are shown in Figure 11 Fig. 12 is a plan view showing the relationship between the rotational position of the rotating lever and the diaphragm of the aperture 20 201013302. Fig. 12 is a view showing the relationship between the position of the driving pin of the rotating lever and the range of the rotational angle of the rotating lever. The range of rotation of the rotating lever is different from the range of the rotational angle of the rotating lever in the comparative example. Fig. 14 is an illustration showing the advantage of the difference in the range of the rotation angle of the rotating lever with respect to the distribution of the reference line on the small aperture side and the large aperture side. Fig. 15 is an exploded perspective view showing the entire configuration of an aperture device according to a second embodiment of the present invention.
圖16係顯示在光圈基板上的光圈葉片驅動機構安裝 動桿之狀H的域。 衣得 圖17係顯示在圖16的光圈葉片驅動機構安裝部 達安裝罩蓋的狀態之立體圖。 文裝馬 圖18係顯示在圖Π的馬達安裝罩蓋之上安裝步進馬達 態之立體圖 的狀 【主要元件符號說明】Fig. 16 is a view showing a field in which the diaphragm driving mechanism of the diaphragm blade driving mechanism is mounted on the diaphragm substrate. Fig. 17 is a perspective view showing a state in which the cover of the diaphragm blade drive mechanism of Fig. 16 is attached. Figure 18 shows the appearance of a stepper motor mounted on the motor mounting cover of Figure 【 [Main component symbol description]
10 光圈基板 10a 支軸 11 > 14a 開口部 12 > 13 光圈葉片 12a、12b、12c 縱溝 13a、13b、13c 縱溝 12d、13d 長孔(橫溝） 12e、13e 通孔部 14 葉片蓋 15 濾光片 15a 曲柄桿部 15b 貫通孔 15c 長孔 20 光圈葉片驅動機構安裝部 21 201013302 21 底板 22 豎立周壁 23 定位銷 24 卡爪 25 轉動桿用支持軸(轉動桿支持軸） 26 中間齒輪用支持軸(中間齒輪支持軸) 27 止動部突起 28 圓弧狀缺口 29 缺口 30 濾光片驅動機構安裝部 31 底板 32 豎立周壁 40 轉動桿 41 環 41a、 41b 止動部壁 41c、 41d 耳部 42 桿底板 43 内齒輪 44a、 44b 驅動銷 45 中心孔 47 缺口 48 止脫鉤 49 銷孔 50 磁石 51 磁性銷(磁性構件） 60 中間齒輪 61 大齒輪 62 小齒輪 66 中心孔 70 齒輪減速機構10 Aperture substrate 10a Support shaft 11 > 14a Opening portion 12 > 13 Aperture blades 12a, 12b, 12c Longitudinal grooves 13a, 13b, 13c Longitudinal grooves 12d, 13d Long holes (lateral grooves) 12e, 13e Through hole portion 14 Blade cover 15 Filter 15a Crankbar 15b Through-hole 15c Long hole 20 Aperture blade drive mechanism mounting part 21 201013302 21 Base plate 22 Vertical peripheral wall 23 Locating pin 24 Claw 25 Supporting shaft for rotating lever (rotating rod support shaft) 26 For intermediate gear Support shaft (intermediate gear support shaft) 27 Stop portion protrusion 28 Arc-shaped notch 29 Notch 30 Filter drive mechanism mounting portion 31 Base plate 32 Vertical peripheral wall 40 Rotating rod 41 Ring 41a, 41b Stop portion wall 41c, 41d Ear 42 rod bottom plate 43 internal gear 44a, 44b drive pin 45 center hole 47 notch 48 stop hook 49 pin hole 50 magnet 51 magnetic pin (magnetic member) 60 intermediate gear 61 large gear 62 pinion 66 center hole 70 gear reduction mechanism
22 20101330222 201013302
80 馬達安裝罩蓋 81 罩蓋主板 82 馬達安裝壁 83 收線夹 83a 電線收納部 83b 缺口 83c 止脫片 84 鎖定孔 85 鎖定片 86 開口 88 電路板安裝壁 110 步進馬達 111 轉軸 112 馬達齒輪 113 托架 113a 溝部 115 、 125 電路板 116 、 126 電線 117 、 127 連接器 120 致動器 121 驅動桿 122 驅動銷 210 光圈基板 220 光圈葉片驅動機構安裝部 280 馬達安裝罩蓋 fl、£2 箭頭方向 K 基準線 HA 光圈葉片驅動機構 HB 濾光片驅動機構 m、N3 行程 23 201013302 0 轉動中心 Q 磁吸力 R 轉動軌跡 r 轉動半徑 S、S卜 S2、Sb 行程 Θ、0b 轉動角度範圍 Θ1、Θ2、Θ3 轉動角度範圍 ΔΘ 單位轉動角度 AS 單位行程80 Motor mounting cover 81 Cover main plate 82 Motor mounting wall 83 Wire take-up clip 83a Wire storage portion 83b Notch 83c Stop tab 84 Locking hole 85 Locking piece 86 Opening 88 Circuit board mounting wall 110 Stepping motor 111 Rotary shaft 112 Motor gear 113 Bracket 113a Groove 115, 125 Circuit board 116, 126 Wire 117, 127 Connector 120 Actuator 121 Drive rod 122 Drive pin 210 Aperture substrate 220 Aperture blade drive mechanism mounting portion 280 Motor mounting cover fl, £2 Arrow direction K Reference line HA Aperture blade drive mechanism HB Filter drive mechanism m, N3 Stroke 23 201013302 0 Center of rotation Q Magnetic force R Rotational path r Rotational radius S, Sb S2, Sb Stroke Θ, 0b Rotation angle range Θ1, Θ2, Θ3 Rotation angle range ΔΘ unit rotation angle AS unit stroke
24twenty four