201227141 六、發明說明： 【發明所屬之技術領域】 本發明是有關於一種鏡頭，特別是指一種可防止異物 干涉作動的鏡頭。 【先前技術】 參閱圖U2、圖3與圖4,以往的一種鏡^包含 一基座11、一設置於該基座U的驅動單元12、一設置於該 基座11的固定筒13 ’及一可回轉伸縮地設置於該固定筒13 中的回轉筒Η，該驅動單元12包括—馬達⑵，及一組減 速齒輪U2,該固；^筒13包括複數開設於内周面的導溝槽 及-自頂緣朝内凸出的詹部132，該回轉筒14包括複 數對應設置於該等導溝槽131中的爪部ΐ4ι，及一與該組減 速齒輪122嚙合的齒條142。 由收納狀態變換至廣角狀態時，該馬達Μ藉由該故 減速齒輪122、齒條142，驅動該回轉筒14轉動，使該等 爪部⑷在該等導溝槽131中向上滑移至該㈣132下方 :此時’該等爪部141頂面與該層部⑴底面互相抵接。 右外界的異物例如砂粒不恒谁Λ於 了 +厲進入鏡碩1内時，將使該固定 靖13、回轉筒14間的作動產生 玍干7步，甚至於該固定筒13 、回轉筒14間接觸面產生刮痕。 ^此，於該固定筒13與該回轉筒14間設置有 5’該印膜15用來防止外界的砂一慎進人鏡頭i内。 而該回轉筒14相對該固定筒 ^ ^ ^ n U回轉伸縮時，該PU媒 為了配&使該回轉筒14的作 功’暢’例如避免該回轉筒 201227141 14科動或是重複作動，該pu 然而，該回轉筒14在進轉須形成有切刀處151 ’ ⑸產生間隙，而讀外：縮時，會使得該切刀處 丰 ’、^ 1的砂粒由切刀處進入鏡 進 而使該固定筒13、.回轉筒14叫“ 兄頭丄π运 a間的作動產生干涉。因此，一 種了確貫防止異物干涉作動 【發明内容】 ’鏡頭1為目別市場所需。 因此，本發明之目的，即為接徂 干涉作動的鏡頭。 卩从供-種可確實防止異物 於疋本發明可防止異物干涉作動的鏡頭，包含一固 =用一回轉筒’及至少—容砂槽’該固定筒包括一開設 行了導溝槽，及一自頂緣朝内凸出的筹部該回轉 ^可回轉伸縮地設置於該固定筒中，該回轉筒包括一對應 β又置於該導溝槽中的爪部 ·、、 爪部頂面其中一者。雇部底面與該 本發明之功效在於透過該容砂槽，讓砂粒不慎進入鏡 頭内之後’可以留存於該容砂槽中，使得砂粒不至於干涉 該固定筒、回轉筒間的作動。 、/y 【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 以下配合參考圖式之數個較佳實施例的詳細說明中，將可 清楚的呈現》 在本發明被詳細描述之前，要注意的是，在以下的說 明内谷中’類似的元件是以相同的編號來表示。 s 參閱圖5、圖6與圖7,本發明可防止異物干涉作動的 201227141 鏡頭之第一較佳實施例包含一固定筒2 少一容砂槽4。 一回轉筒 3，及至 配合參閱圖4,在本第一較佳實施例中，該固定筒2的 2形狀與以往的鏡頭i的固定筒13相同，該固定筒2包 ::复數開設於内周面的導溝#21，及一自頂緣朝内凸出的 4 22’該科溝槽21分別㈣—自底料伸向上的斜上 部川’及-連通該斜上部211並位於該簷部22下方的水201227141 VI. Description of the Invention: TECHNICAL FIELD The present invention relates to a lens, and more particularly to a lens that prevents foreign matter from interfering with motion. [Prior Art] Referring to FIG. U2, FIG. 3 and FIG. 4, a conventional mirror includes a base 11, a driving unit 12 disposed on the base U, and a fixed cylinder 13' disposed on the base 11. a rotary cylinder rotatably disposed in the fixed cylinder 13, the driving unit 12 includes a motor (2), and a set of reduction gears U2, the solid cylinder 13 includes a plurality of guide grooves formed on the inner circumferential surface And a portion 132 that protrudes inwardly from the top edge, the reel 14 includes a plurality of claws 1-4, which are disposed in the guide grooves 131, and a rack 142 that meshes with the set of reduction gears 122. When the storage state is changed to the wide-angle state, the motor 驱动 drives the rotary cylinder 14 to rotate by the reduction gear 122 and the rack 142, so that the claws (4) slide upward in the guide grooves 131. (4) Below 132: At this time, the top surfaces of the claw portions 141 and the bottom surface of the layer portion (1) abut each other. The foreign matter on the right outside, such as the sand particles, is not constant, and when it enters the mirror, it will cause the operation between the fixed hinge 13 and the rotary cylinder 14 to be dried 7 steps, even the fixed cylinder 13 and the rotary cylinder 14 Scratches are formed between the contact faces. ^, the printing film 15 is disposed between the fixed cylinder 13 and the rotating cylinder 14 to prevent the outside sand from being carefully inserted into the lens i. When the revolving cylinder 14 is rotated and retracted relative to the fixed cylinder, the PU medium is used to match the operation of the revolving cylinder 14 to avoid, for example, the rotation of the revolvering cylinder 201227141 14 or the repeated operation. However, the revolving cylinder 14 has a cutting edge formed at the cutting edge 151' (5) to create a gap, and the outer reading: when the retracting, the sand at the cutting edge of the cutting knife is entered into the mirror by the cutter. The fixed cylinder 13 and the rotary cylinder 14 are called "the operation of the brothers 丄 运 a a interferes with each other. Therefore, it is possible to prevent foreign matter from interfering with each other. [Inventive content] 'Lens 1 is required for the market. Therefore, The object of the present invention is to act as a lens for interference with interference. 卩From the supply-type, it is possible to prevent foreign matter from being smashed. The lens for preventing foreign matter from interfering with the present invention includes a solid=using a rotary cylinder' and at least a sand trap The fixed cylinder includes a guide groove and a protruding portion protruding from the top edge. The rotation is rotatably and telescopically disposed in the fixed cylinder, and the rotary cylinder includes a corresponding β and is placed on the guide One of the claws in the groove, and one of the top faces of the claws The bottom surface of the hiring portion and the effect of the present invention are that the sand particles can be retained in the sand receiving tank after passing through the sand receiving groove, so that the sand particles do not interfere with the movement between the fixed cylinder and the rotating cylinder. The above and other technical contents, features and effects of the present invention will be clearly described in the following detailed description of the preferred embodiments with reference to the drawings. In the past, it should be noted that in the following description, the similar elements are denoted by the same reference numerals. s Referring to FIG. 5, FIG. 6 and FIG. 7, the first comparison of the 201227141 lens which can prevent foreign matter from interfering with the operation of the present invention. The preferred embodiment comprises a fixed cylinder 2 and a sand receiving tank 4. A rotating cylinder 3, and with reference to Fig. 4, in the first preferred embodiment, the shape of the fixing cylinder 2 is fixed to the conventional lens i. The cylinder 13 is identical, and the fixed cylinder 2 includes: a plurality of guide grooves #21 opened on the inner circumferential surface, and a 4 22' projecting groove 42 inwardly from the top edge respectively (four) - extending from the bottom material Oblique upper Chuan 'and - connect the oblique upper part 2 11 and the water below the crotch 22
平部扣，該固定筒2也可僅包括數量為一的導溝槽Μ。 該回轉筒3可回轉伸縮地設置於該固定筒2中，該回 轉筒3包括複數對應設置於該導溝槽21十的爪部η，圖4 令的虛線及箭頭表現該等爪部31在該等導溝槽Μ中的滑 動路徑。 在本第-較佳實施射，該鏡頭包含複數個容砂槽〇 該等容砂槽4分別自該等爪部31頂面3ιι向下凹設且該 等容砂槽4並與該等爪部31的外側面312連通。 進-步說明的是，該等容砂槽4也可以不與該等爪部 31的外侧面312連通，或是該等容砂槽4也可以與該等爪 部3W旁側面313連通，或是—爪部31上形成有多數個 容砂槽4,此項技術領域中具有#通知識的技術人員，都可 以借著本發明闡述的容砂槽4形狀、數量，簡單地設計出 各種可以容納砂粒的容砂槽4，故在此不再贅述。（圖皆未 示） 由前述可知’在本第_較佳實施例中，透過該等容砂 槽4,提供容納砂粒的空間，因此當該回轉筒3作動至廣角 201227141 狀態時’該等爪部31沿著該等導溝槽》1的斜上部211往上 滑移至該簷部22,再沿著該水平部212旋轉，此時該等爪 部頂面311與該詹部22底面221彼此相抵接觸，砂粒則 容置於該等容砂槽4中，因此該回轉筒3與該固定筒2間 的作動順暢不被砂粒干涉。 參閱圖8與圖9’並配合參閱圖4，本發明可防止里物 干涉作動的鏡頭的第二較佳實施例與該第一較佳實施例構 件大致相同’不同之處在於該第二較佳實施例中，該等容 砂槽4自該層部22底面221向上凹設’且該等容砂槽*鄰 近該斜上部211與水平部212交會處設置，因此，落於該等 爪部頂面311的砂粒在當該回轉筒3作動至廣角狀態時 ，可以容納於該詹部22中，而達到防止該固定筒2與該回 轉筒3間干涉作動的功效。 參閱圖1〇’本發明可防止異物干涉作動的鏡頭的第三 較佳實施例與該第-較佳實施例構件大致相同，不同之處 在於該第三較佳實施例中，該等容砂槽4同時凹設於該等 爪部的頂面311以及凹設於該廣部22的底面221，也同 樣提供了供砂粒容置的功效。 '上所述，透過該等容砂槽4凹設於該等爪部Η頂面 3U、料22底面221，或同時凹設於兩者，讓砂粒不慎進 入鏡頭内之後，可以留存於該等容砂槽4巾，讓砂粒不至 3與固定筒2接觸面間’因此不會造成該 3的作動被干涉，確實達到防止砂粒干涉作動、維 持作動順暢的功效’達成本發明之目的。 201227141 惟以上所述者，僅為本發明之較佳實施例而已， 能以此限定本發明實施之範圍，即大凡依本發明申請： 範圍及發明說明内容所作之簡單的等效變化與㈣ 屬本發明專利涵蓋之範圍内。 【圖式簡單說明】 圖1疋立體圖’說明以往的_種鏡頭在收納狀態； 圖2疋立體圖’說明以往的一種鏡頭在廣角狀態；The flat buckle can also include only one guide groove 数量. The rotary cylinder 3 is rotatably and telescopically disposed in the fixed cylinder 2, and the rotary cylinder 3 includes a plurality of claws η corresponding to the guide grooves 21, and the dotted lines and arrows of FIG. 4 indicate that the claws 31 are The sliding path in the guide grooves. In the first preferred embodiment, the lens comprises a plurality of sand receiving grooves, wherein the equal sand grooves 4 are respectively recessed from the top surface 3 of the claw portions 31 and the equal sand grooves 4 and the claws are The outer side surface 312 of the portion 31 is in communication. Further, the sand chamber 4 may not communicate with the outer side surface 312 of the claw portions 31, or the sand receiving chambers 4 may communicate with the side surfaces 313 of the claw portions 3W, or Yes, a plurality of sand receiving grooves 4 are formed on the claw portion 31. Those skilled in the art having the knowledge of the invention can simply design various shapes by the shape and quantity of the sand receiving groove 4 described in the present invention. The sand receiving tank 4 for accommodating the sand is not described here. According to the foregoing, in the present preferred embodiment, the space for accommodating the grit is provided through the grit chamber 4, so that when the revolving cylinder 3 is actuated to the wide angle 201227141 state, the claws are The portion 31 slides up to the crotch portion 22 along the oblique upper portion 211 of the guide groove 》1, and then rotates along the horizontal portion 212. At this time, the claw top surface 311 and the bottom surface 221 of the Zhan portion 22 When the objects are in contact with each other, the sand particles are accommodated in the equal sand tank 4, so that the operation between the rotary cylinder 3 and the fixed cylinder 2 is smoothly prevented from being interfered by the sand. Referring to FIG. 8 and FIG. 9 ′, and referring to FIG. 4 , the second preferred embodiment of the lens for preventing the interference interference of the present invention is substantially the same as the member of the first preferred embodiment. The difference is that the second comparison is In a preferred embodiment, the isosceles 4 is recessed from the bottom surface 221 of the layer portion 22 and the sand chamber is disposed adjacent to the intersection of the oblique portion 211 and the horizontal portion 212, and thus falls on the claw portions. The sand of the top surface 311 can be accommodated in the squaring portion 22 when the rotary cylinder 3 is actuated to a wide-angle state, thereby achieving the effect of preventing interference between the fixed cylinder 2 and the rotary cylinder 3. Referring to FIG. 1A, a third preferred embodiment of the lens for preventing foreign matter from interfering with the present invention is substantially the same as the member of the first preferred embodiment, except that in the third preferred embodiment, the sand is equal to the sand. The groove 4 is simultaneously recessed on the top surface 311 of the claws and the bottom surface 221 recessed in the wide portion 22, and also provides the effect of the sand content. As described above, the sand chambers 4 are recessed in the top surface 3U of the claws, the bottom surface 221 of the material 22, or both of them are recessed in the same manner, so that the sand grains may be inadvertently entered into the lens. The equal volume sand groove 4 is so that the sand particles are not between the 3 and the contact surface of the fixed cylinder 2, so that the operation of the 3 is not interfered, and the effect of preventing the sand particles from interfering with the movement and maintaining the smooth operation is achieved. The above is only the preferred embodiment of the present invention, and the scope of the present invention can be limited thereto, that is, the simple equivalent variation of the scope and the description of the invention and the (4) genus The scope of the invention is covered. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a conventional lens in a stored state; FIG. 2 is a perspective view showing a conventional lens in a wide-angle state;
圖3疋頂視圖’說明以往的—種鏡頭的結構； .，圖4是立體圖’說明以往的-種鏡頭的-固定筒及其 •是立體圖，㈣本發明T防止異物干涉作動的鏡 頭的第一較佳實施例； 的兄 圖6是局部放大圖，說明本第—較佳實施例的其中一 谷砂槽凹設於一爪部頂面； 圖7是剖視圖，說明本第一較佳實施例的一固定筒及 一回轉筒；， 圖8是立體圖，說明本發明可防止異物干涉作動的鏡 頭的第二較佳實施例的該固定筒； ^ · 疋°1〗視圖，說明本第二較佳實施例的該固定筒及 該回轉筒；及 —圖10是剖視圖，說明本發明可防止異物干涉作動的鏡 員的第二較佳實施例的該固定筒及該回轉筒。 201227141 【主要元件符號說明】 2…… •…固定筒 3…… …回轉茼 21 ….· •…導溝槽 31 •…· …·爪部 211 ·· …·斜上部 311… •…頂面 212… …·水平部 312… •…外側面 22 •…簷部 313… ----旁側面 221… •…底面 4…… …·容砂槽Fig. 3 is a top view showing the structure of a conventional lens; Fig. 4 is a perspective view showing a conventional lens-fixing cylinder and a perspective view thereof, and (4) a lens of the present invention for preventing foreign matter from interfering with motion A preferred embodiment of the present invention is a partially enlarged view showing one of the sand grooves of the first preferred embodiment being recessed on the top surface of a claw; FIG. 7 is a cross-sectional view showing the first preferred embodiment. An example of a fixed cylinder and a rotary cylinder; FIG. 8 is a perspective view showing the fixed cylinder of the second preferred embodiment of the lens for preventing foreign matter from interfering with the present invention; ^ · 疋 ° 1 view, illustrating the second The fixed cylinder and the rotary cylinder of the preferred embodiment; and FIG. 10 is a cross-sectional view showing the fixed cylinder and the rotary cylinder of the second preferred embodiment of the present invention which can prevent foreign matter from interfering with the operation of the present invention. 201227141 [Explanation of main component symbols] 2... •...Fixed cylinder 3............Rotary 茼21 .....•...Guide groove 31 •...···Claw part 211 ···· oblique upper part 311... •... top surface 212...the horizontal portion 312...the outer surface 22 of the outer surface 22...the inner portion 313...the side surface 221...the bottom surface 4...the sand groove