201248308 六、發明說明： 【發明所屬之技術領域】 特別是指一種鏡頭的 本發明疋有關於一種快門裝置 可防塵快門裝置。 【先前技術】 如圖1、2、3所示’習知一種鏡頭的快門裝置包含— 基座卜-設置於該基座！較位蓋2，及一設置於該定位 蓋2與該基座1之間的快門單元3。 該基座1具有端壁1G1、—貫穿該端壁101的第—透 光孔1〇2、二對稱地設置並分別貫穿該端| ι〇ι的作動孔 1〇3,及二凸設於該端冑1〇1 _ 1〇4。該定位蓋 一對應於該第-透光孔1()2的第二透光孔2gi。 八 撼門單①3具有二分別樞設於該等樞軸⑺4的第一 快Π片30卜二分別樞設於該等樞軸1()4並可被該等第 門片301驅動的第二快門片地，及二分別樞設於該等拖軸 Γ第T=等第二快門片302驅動的第三快門片3°3。該 =第一快門片3〇1分別具有一延伸入其中一作動孔103並 被一驅動装置（圖未示，例如 J如電磁閥）驅動的被驅動軸3〇4 〇 藉此’如圖4、5所示，嗜黧 „ u _ '亥專第-快門片301可帶動該 1第一、二快門片3〇2、地在-打開位置(見圖4)與一 、兄圖5)之間切換，而產生快門的作用。 然而’如圓3、4、, 所不，由於該基座1在該第一透 光孔102與任一作動別仕忑弟透 乍動孔103 <間並無設置任何朝上凸伸至 201248308 鄰近該第二透光孔201的擋牆，再加上該等第一快門片3〇ι 不論在該打開位置或該關閉位置均無法完全遮蔽該等作動 孔103，因此，外界的沙塵或異物會彼容易地從該第二透光 孔2〇1跑到該定位蓋2與該端壁1〇1之間，並落到該等第 一快門片301的樞轉處，再從該等作動孔1〇3跑到鏡頭内 部，造成鏡頭發生白畫面或作動不良的問題。 【發明内容】 因此，本發明之目的，即在提供一種可防止異物進入 鏡頭内部的鏡頭的可防塵快門裝置。 於是，本發明鏡頭的可防塵快門裝置，包含一基座、 -定位蓋’及一快門單元。該基座具有一端壁、一沿一軸 向貫穿該端壁的第一透光孔、二分別貫穿該端壁並對稱地 位於該第-透光孔之外的作動孔，及二凹設於該端壁的一 端面並分別介於該等作動孔與該第一透光孔之間的嵌溝。 該定位蓋設置於該基座’並具有一對應於該第一透光孔的 第二透光孔。該快門單元具有二可擺動地設置於該定位蓋 與該基座之間的第一快門片，該等第一快門片分別具有一 樞接端。卩、5又置於該樞接端部並朝該端壁延伸至其中一 作動孔内的被驅動部’及一設置於該極接端部並朝該端壁 延伸至其中一嵌溝内的嵌合凸緣部，該等第-快門片的嵌 合凸緣部分別圍繞該等作動孔，而阻隔於該等作動孔與該 第一透光孔之間。 【實施方式】 有關本發明之前述及其他技術内容、特點與功效，在 201248308 以下配合參考圖4 + . 八之一較佳實施例的詳細說明中，將可清 楚的明白。 參閱圖6、7、8， ^ 為本發明鏡頭的可防塵快門裝置的較 佳實施例’ 5亥鏡頭的可防塵快門裝置包含：一基座⑺、一 定位蓋20’及—快門單元3〇。 以基座1〇具有—端壁U、—内周壁12、-外周壁13 。軸向X貝穿該端壁u的第一透光孔Μ、二分別貫 穿該端壁11並對稱地位於該第—透光孔14之外的作動孔 凹°又於。亥端壁11的一端面111並分別介於該等作動 孔15與該第一透光孔14之間的嵌溝16、二凸設於該端壁 11的端Φ 111並分別介於該等嵌溝16與該第—透光孔14 之間的擋牆17，及-却罢 及一a又置於該端壁11的端面ill並分別位 於該等作動孔15之外的樞軸18。 在本實施财’料作動孔15可分助對於該等枢轴 18界定出一第一幅角Θ1 (見圖9)，較佳地，該第一 Θ1實質上為80。。 月 該定位蓋20設置於該基座1G，並具有—對應於該第一 透光孔14的第二透光孔21，及一朝节美庙1Λ 軍月絲座10延伸出並圍 、·堯該第二透光孔21的擋緣22。 在本實施例中，該等擋牆17分別朝上延伸至鄰近於該 擒緣22,且該等擋牆17的一頂緣m均高於該擔緣u的 一底緣221。 ^ 該快門單元30具有二可擺動地設置於該定位蓋μ盥 該基座1G之間的第-快門片31、二分別與該等第—快門片、 201248308 31同軸抱設的第二快門片32,及二分別與該等第一快 31同軸樞設的第三快門片33。 該等第—快門片31分別具有-樞接端部3U、-設置 於該枢接端部311並朝該端壁11延伸至其中-作動孔15内 的破驅動4 312、一設置於該樞接端冑311並朝該端壁Η 延伸至其中—嵌溝16内的嵌合凸緣部313、-設置於該抱 接端部3U的套管314、一貫穿該套管314與該樞接端部 軸孔315,及一朝其中一第二快門片32延伸出的 第一驅動軸316。 該等第-快門片31的㈣端部311分別拖設於該等框 軸18 ’在本實施例中，該等第一轴孔315分別與該等枢軸 18樞接》 π低神 該等第-快門片31的嵌合凸緣部313分別圍繞該等作 動孔/5，而阻隔於該等作動孔15與該第—透光孔μ之間 :該等第—快門片31㈣合凸緣部313可分別相對於該等 柩軸18界定出一第二幅角Θ2 (見圖9)，較佳地，該二幅 角0 2實質上為125。。 田 該等第-快門片31在-打開位置（見圖9)與一關閉 位置（見® 10)之間可分別界定出一擺動幅角03 (見圖 10)，較佳地，該擺動幅角Θ3實質上為41。，在本實施例 中，該第二幅角02(見圖9)的數值（125。）大於該第一 幅角Θ1 (見Κ 9)與該擺動幅角(見圖1〇)相加的數 值（8〇°+41。）。 該等第二快門片32分別具有一與該等第一快門片31 201248308 的套管314樞接的第二軸孔321、一與該等第一快門片3ι 的第一驅動軸3 1 ό銜接的第二銜接孔322，及—第二驅動 323。 該等第三快門片33分別具有一與該等第一快門片 的套管314樞接的第三軸孔331，及一與該等第二快門片 32的第一驅動軸323銜接的第三銜接孔332。 藉此，如圖8、9、1〇所示，該等第一快門片31可帶 動該等第二、三快門片32、33在該打開位置與該關閉位置 之間切換，而產生快門的作用，在此過程中，該等擋牆Η 分別阻隔於該第二透光孔21與該等作動孔15之間Ί亥等 嵌合凸緣部313也分別阻隔於該第二透光孔21與該等作動 孔15之間，同時’該等第一快門片31的樞接端部如可分 別遮蔽該等作動孔15。 經由以上的說明，可再將本發明的優點歸納如下： 本發明基座10的擋牆17的頂緣m肖高於該定位蓋 2〇的擋緣22的底緣221，而配合形成第一重的高底落差阻 隔設計，使外界的沙塵或異物無法輕易地從該第二透光孔 21跑到該定位蓋20與該端壁m，而不易落到該該等 第快門片31的樞轉處，更重要的是，該等第—快門片31 =嵌合凸緣部313是分別嵌合於該等嵌溝16，而配合形成 -重的高底落差阻隔設計，而且，該等嵌合凸緣部313 的第二幅角Θ2的數值是大於該等作動孔15的第—幅角θ1 與該等第-快門片31的擺動幅角θ3相加的數值，因此， 不論在該打開位置或該關閉位置，該等嵌合凸緣部313均 201248308 可進一步阻隔於該第二透光孔21與該等作動孔i5之間， 而進-步防止外界的沙塵或異物從該等作動孔15跑到鏡頭 内部，相較於習知技術， 议釘本發明可有效防止鏡頭發生白畫 面或作動不良的問題。 值传提的疋，本發明的基座1〇也可以取消該等撐牆 17的設置’如此，藉由該等第一快門片31的敌合凸緣部 313分別嵌合於該等嵌;冓16，並藉由該等嵌合凸緣部… 分別阻隔於該第二透光孔21與該等作動孔15之間，也可 產生良好的阻隔效果。 綜上所述’本發明之鏡頭的可防塵快門裝置，不僅可 有效阻隔外界"塵或異物進入鏡頭内部’且可防止鏡頭發 生白畫面或作動不良的問題，故確實能達成本發明之目的 惟以上所述者，僅為本發明之較佳實施例而已，當不 能以此限定本發明實施之範圍，即大凡依本發明申請專利 範圍及發明說明内容所作之簡單的等效變化與修飾，皆仍 屬本發明專利涵蓋之範圍内。 201248308 【圖式簡單說明】 是習知-種鏡頭的快門裝置的立體分解示意圖； 圖2是該快門裝置的一基座的平面示意圖； 圖3是該快門裝置的局部組合剖視示意圖； .圖4是一平面示意圖’說明該快門裝置在-打開位置 ， 圖5是一類似於圖4的視圖，說明該快門裝置在一關 閉位置； 圖6是本發明的鏡頭的可防塵快門裝置一較佳實施例 的立體分解示意圖； 圖7是該較佳實施例的一基座的立體示意圖； 圖8是該較佳實施例的組合剖視示意圖； _圖9是一平面示意圖，說明該較佳實施例的一快門單 疋的二第一快門片在一打開位置；及 圖10是一類似於圖9的視圖，說明該等第一快門片在 一關閉位置。 201248308 【主要元件符號說明】 10···.. …·基座 32…… •…第二快門片 11 ·.··· …·端壁 321… •…第二軸孔 111… …·端面 322… 第一銜接孔 12····. •…内周壁 323… •…第二驅動軸 13·.··. •…外周壁 33…… •…第三快門片 14…… •…第一透光孔 331… •…第三軸孔 15•.… •…作動孔 332… •…第三銜接孔 16…… •…嵌溝 X....... •…軸向 17…… •…擋牆 0 1·.· …·第一幅角 171 ··· •…頂緣 0 2··· •…第二幅角 18…… •…樞軸 0 3·.. •…擺動幅角 20…… •…定位蓋 21…… •…第二透光孔 22…… •…擋緣 221 ··· ----底緣 30…… •…'决門單元 31…… •…第一快門片 311… 柩接端crP 312 ··· •…被驅動部 313… •…嵌合凸緣部 314… •…套管 315… —第 軸孔 316… •…第一驅動軸 10201248308 VI. Description of the Invention: [Technical Field of the Invention] In particular, the present invention relates to a shutter device dust-proof shutter device. [Prior Art] As shown in Figs. 1, 2, and 3, a conventional shutter device includes a pedestal-disposed on the pedestal! The position cover 2 and a shutter unit 3 disposed between the positioning cover 2 and the base 1. The pedestal 1 has an end wall 1G1, a first light-transmissive hole 〇2, 2 through which the end wall 101 is symmetrically disposed, and respectively penetrates the working hole 1〇3 of the end | ι〇ι, and The end 胄1〇1 _ 1〇4. The positioning cover corresponds to the second light transmission hole 2gi of the first light-transmitting hole 1()2. The eight-door door 13 has two first quick-release pieces 30 pivotally respectively disposed on the pivots (7) 4 and two secondly pivotally mounted on the pivots 1 () 4 and driven by the first door pieces 301 The shutter plate ground and the second are respectively pivoted on the third shutter piece 3° 3 driven by the second shutter piece 302 such as the drag axis T=etc. The first shutters 3〇1 respectively have a driven shaft 3〇4 extending into one of the operating holes 103 and driven by a driving device (not shown, for example, J such as a solenoid valve). 5, the 黧 黧 u u _ 'Hai special - shutter 301 can drive the first and second shutters 3 〇 2, the ground-on position (see Figure 4) and one, brother Figure 5) Switching between, and the role of the shutter. However, as the circle 3, 4, no, because the pedestal 1 in the first light-transmissive hole 102 and any one of the movements of the younger brother through the hole 103 < There is no provision of any retaining wall that protrudes upward to 201248308 adjacent to the second light-transmissive aperture 201, and the first shutters 3〇 cannot be completely shielded from the open position or the closed position. The hole 103, therefore, external dust or foreign matter can easily run from the second light-transmissive hole 2〇1 between the positioning cover 2 and the end wall 1〇1, and fall to the first shutter piece The pivoting position of the 301 is further traversed from the working holes 1〇3 to the inside of the lens, causing a problem that the lens has a white screen or malfunction. [Invention] Therefore, the present invention The purpose of the present invention is to provide a dust-proof shutter device for preventing a foreign object from entering a lens inside the lens. Thus, the dust-proof shutter device of the lens of the present invention comprises a base, a positioning cover' and a shutter unit. An end wall, a first light-transmissive hole penetrating the end wall in an axial direction, two operating holes respectively penetrating the end wall and symmetrically located outside the first light-transmitting hole, and two recessed holes in the end wall An end surface is respectively disposed between the working hole and the first light transmission hole. The positioning cover is disposed on the base and has a second light transmission hole corresponding to the first light transmission hole. The shutter unit has two first shutters that are swingably disposed between the positioning cover and the base, and the first shutters respectively have a pivoting end. The cymbals 5 are placed at the pivot end. a driven portion extending toward the end wall to one of the operating holes and a fitting flange portion disposed at the end portion and extending toward the end wall into one of the grooves, the first shutter The fitting flange portions respectively surround the actuating holes and are blocked from the actuating holes and [First Embodiment] The foregoing and other technical contents, features, and effects of the present invention will be apparent from 201248308 to the detailed description of the preferred embodiment of FIG. 4 + . Referring to Figures 6, 7, and 8, a preferred embodiment of the dust-proof shutter device of the lens of the present invention, the dust-proof shutter device of the 5-cam lens includes: a base (7), a positioning cover 20', and a shutter The unit 3A has an end wall U, an inner peripheral wall 12, and an outer peripheral wall 13. The first light transmission hole Μ and the second hole of the axial end X penetrate the end wall 11 and respectively penetrate the end wall 11 and The operating hole symmetrically located outside the first light-transmitting hole 14 is recessed. The one end surface 111 of the inner end wall 11 is respectively interposed between the working hole 15 and the first light-transmitting hole 14. 16. The second wall is disposed at the end Φ 111 of the end wall 11 and is respectively disposed between the recessed wall 16 and the first light-transmissive hole 14, and is placed at the end. The end faces ill of the wall 11 are respectively located at pivots 18 outside the actuating holes 15. In the present embodiment, the orifice 15 can be divided to define a first angle Θ1 (see Fig. 9) for the pivots 18. Preferably, the first Θ1 is substantially 80. . The positioning cover 20 is disposed on the base 1G, and has a second light-transmissive hole 21 corresponding to the first light-transmissive hole 14 and an extension of the first and second temples. The rim 22 of the second light transmission hole 21 is formed. In the present embodiment, the retaining walls 17 extend upwardly adjacent to the rim 22, and a top edge m of the retaining walls 17 is higher than a bottom edge 221 of the rim u. The shutter unit 30 has two first shutters 31 that are swingably disposed between the positioning cover and the base 1G, and two second shutters that are coaxially disposed with the first shutters and the 201248308 31. 32, and two third shutters 33 respectively pivoted coaxially with the first fast 31. The first shutters 31 have a pivotal end portion 3U, a broken drive 4 312 disposed at the pivot end 311 and extending toward the end wall 11 into the operating hole 15 The end 胄 311 extends toward the end wall 至 to the fitting flange portion 313 in the fitting groove 16 , a sleeve 314 disposed at the holding end portion 3U , and a sleeve 314 extending through the sleeve An end shaft hole 315, and a first drive shaft 316 extending toward one of the second shutter pieces 32. The (four) end portions 311 of the first-shutter sheets 31 are respectively dragged to the frame shafts 18'. In the present embodiment, the first shaft holes 315 are respectively pivotally connected to the pivot shafts π. - the fitting flange portion 313 of the shutter piece 31 surrounds the driving holes /5, respectively, and is blocked between the operating holes 15 and the first light transmitting hole μ: the first shutter 31 (four) and the flange portion 313 can define a second angle Θ2 (see FIG. 9) with respect to the axes 18, respectively. Preferably, the two angles 0 2 are substantially 125. . Between the open-open position (see FIG. 9) and a closed position (see о 10), the first shutter-slider 31 can define a wobble angle 03 (see FIG. 10), preferably the swivel swath. The corner Θ 3 is substantially 41. In this embodiment, the value (125.) of the second angle 02 (see FIG. 9) is greater than the first angle Θ1 (see Κ9) and the swing angle (see FIG. 1A). Value (8〇°+41.). The second shutters 32 respectively have a second shaft hole 321 pivotally connected to the sleeve 314 of the first shutter piece 31 201248308, and a first drive shaft 3 1 与 of the first shutter piece 3 1 . The second connection hole 322, and the second drive 323. The third shutters 33 respectively have a third shaft hole 331 pivotally connected to the sleeve 314 of the first shutter sheets, and a third shaft that is coupled to the first drive shaft 323 of the second shutters 32. Engagement hole 332. Thereby, as shown in FIGS. 8, 9, and 1 , the first shutters 31 can drive the second and third shutters 32, 33 to switch between the open position and the closed position to generate a shutter. In this process, the retaining wall 阻 is respectively blocked between the second light-transmissive hole 21 and the operating hole 15 and the fitting flange portion 313 is also blocked by the second light-transmissive hole 21 Between the working holes 15 and the pivoting ends of the first shutters 31, the operating holes 15 can be respectively shielded. Through the above description, the advantages of the present invention can be further summarized as follows: The top edge m of the retaining wall 17 of the susceptor 10 of the present invention is slightly higher than the bottom edge 221 of the retaining edge 22 of the positioning cover 2〇, and cooperates to form the first The heavy high-bottom drop barrier design prevents the dust or foreign matter from the outside from easily escaping from the second light-transmitting hole 21 to the positioning cover 20 and the end wall m, and is not easy to fall on the first shutter 31 At the pivoting point, more importantly, the first-shutter piece 31 = fitting flange portion 313 is respectively fitted to the fitting grooves 16 to form a heavy-bottomed high-bottom drop barrier design, and The value of the second corner Θ2 of the fitting flange portion 313 is larger than the value of the first angle θ1 of the actuator holes 15 and the swing angle θ3 of the first shutter 31, and therefore, In the open position or the closed position, the fitting flange portions 313 are further blocked between the second light transmission hole 21 and the operation holes i5, and further prevent dust or foreign matter from the outside. Waiting for the moving hole 15 to run inside the lens, compared with the prior art, the invention can effectively prevent the lens from white painting. Face or dysfunctional problems.值 值 疋 疋 疋 疋 疋 本 本 本 本 本 本 本 本 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座 基座The 冓16 and the fitting holes are respectively blocked between the second light-transmissive holes 21 and the operating holes 15, and a good barrier effect can be produced. In summary, the dust-proof shutter device of the lens of the present invention can effectively prevent the outside world from "dust or foreign matter entering the inside of the lens" and prevent the lens from appearing white or malfunctioning, so that the object of the present invention can be achieved. The above is only the preferred embodiment of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent changes and modifications made by the scope of the invention and the description of the invention are All remain within the scope of the invention patent. 201248308 [Simplified illustration of the drawings] is a schematic exploded perspective view of a shutter device of a conventional lens; FIG. 2 is a plan view of a base of the shutter device; FIG. 3 is a partial cross-sectional view of the shutter device; 4 is a plan view 'illustrating the shutter device in the -open position, FIG. 5 is a view similar to FIG. 4, illustrating the shutter device in a closed position; FIG. 6 is a view of the dust-proof shutter device of the lens of the present invention. 3 is a schematic perspective view of a base of the preferred embodiment; FIG. 8 is a schematic cross-sectional view of the preferred embodiment; FIG. 9 is a schematic plan view showing the preferred embodiment The first shutter of a shutter unit of an example is in an open position; and FIG. 10 is a view similar to FIG. 9 illustrating the first shutter in a closed position. 201248308 [Description of main component symbols] 10····.....Base 32...•...Second shutter 11·.·····End wall 321...•...Second shaft hole 111... End face 322 ... the first connecting hole 12····. •... inner peripheral wall 323... •...second drive shaft 13····. •...peripheral wall 33... •...third shutter 14... Light hole 331... •...Third shaft hole 15•....•...acting hole 332... •...third connecting hole 16... •...ditching X.......•...axial 17............ Retaining wall 0 1··· ...·The first corner 171 ··· •...Top edge 0 2··· •...Second angle 18... •...Pivot 0 3·.. •...Wobble angle 20 ...... •... positioning cover 21... •... second light transmission hole 22... •... rim 221 ··· ---- bottom edge 30... •...'s door unit 31... •...first shutter Sheet 311... cr cr crP 312 ····... driven portion 313... • fitting flange portion 314... • sleeve 315... - shaft shaft hole 316... • first drive shaft 10