TWI632407B - Optical fiber adapter - Google Patents
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- TWI632407B TWI632407B TW106141449A TW106141449A TWI632407B TW I632407 B TWI632407 B TW I632407B TW 106141449 A TW106141449 A TW 106141449A TW 106141449 A TW106141449 A TW 106141449A TW I632407 B TWI632407 B TW I632407B
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Abstract
本發明之光纖轉接器包含一外殼體及一內殼體。外殼體內形成有一第一對齊圓筒,用以容納一第一光纖。內殼體係一體形成並設置在外殼體內,該內殼體包含有一底板、一對固定夾以及一第二對齊圓筒。固定夾係從底板的正面延伸出,而第二對齊圓筒則設置在兩固定夾之間,並從底板的正面朝一縱向方向延伸出。第二對齊圓筒上形成有兩道相對設置的開槽,該兩開槽由第二對齊圓筒的外表面貫通至內表面,並且朝縱向方向延伸至底板的背面。The fiber optic adapter of the present invention comprises an outer casing and an inner casing. A first alignment cylinder is formed in the outer casing for receiving a first optical fiber. The inner casing is integrally formed and disposed within the outer casing, and the inner casing includes a bottom plate, a pair of fixing clips, and a second alignment cylinder. The fixing clip extends from the front surface of the bottom plate, and the second alignment cylinder is disposed between the two fixing clips and extends from the front surface of the bottom plate toward a longitudinal direction. Two oppositely disposed slots are formed in the second alignment cylinder, the two slots extending from the outer surface of the second alignment cylinder to the inner surface and extending in the longitudinal direction to the back surface of the bottom plate.
Description
本發明係有關一種光纖轉接器,更特別有關一種單件式光纖轉接器。This invention relates to an optical fiber adapter, and more particularly to a one-piece fiber optic adapter.
近年來,用於通信目的的光纖使用量已經非常大,數據、語音和其他通信網路越來越多使用光纖來傳輸信息。光纖通常配置為用來承載光的玻璃纖維。單根纖維可以被分組成能夠同時攜帶大量數據。In recent years, the amount of fiber used for communication purposes has been very large, and data, voice, and other communication networks are increasingly using optical fibers to transmit information. Optical fibers are typically configured as fiberglass for carrying light. Individual fibers can be grouped to carry large amounts of data at the same time.
在建構光纖網路時,每根光纖通常會連接到來源設備和目標設備。另外,沿著來源和目的地之間的光纖路徑,可以在光纖上形成各種連接或耦合以調整光纖長度。每個連接或耦合需要連接器和轉接器來對齊光纖,使得光可以不中斷地傳輸。典型的連接器包括兩個對稱的殼體,每個殼體具有連接器閂鎖。一個對齊袖管(sleeve)放置在連接器閂鎖內,以確保光纖精確地對齊。然後,兩個殼體以焊接(即,通過超音波焊接)、鉚接或其他方式彼此附接在一起,從而形成連接。然後將單根光纖放置在每個連接器閂鎖內,對齊袖管因此對齊了光纖。When building a fabric, each fiber is typically connected to the source and destination devices. Additionally, along the fiber path between the source and destination, various connections or couplings can be formed on the fiber to adjust the fiber length. Each connection or coupling requires a connector and an adapter to align the fibers so that light can be transmitted without interruption. A typical connector includes two symmetrical housings, each housing having a connector latch. An aligned sleeve is placed inside the connector latch to ensure precise alignment of the fibers. The two housings are then attached to each other by welding (ie, by ultrasonic welding), riveting or other means to form a joint. A single fiber is then placed in each connector latch, aligning the sleeves and thus aligning the fibers.
由於需要多個部件(每個部件可能需要單獨製造),並且必須進行焊接、鉚接或其他連接工藝來連接兩個對稱的殼體,所以這種示例性的連接器生產成本較高。此外,由於在焊接過程中兩個對稱的殼體部件可能移位,所以對齊問題可能由連接過程引起。This exemplary connector is costly to produce because multiple components are required (each component may need to be manufactured separately) and must be welded, riveted or otherwise joined to join the two symmetrical housings. Furthermore, since two symmetrical shell parts may be displaced during the welding process, the alignment problem may be caused by the joining process.
在1994年5月31日授予Beard等人的美國專利第5,317,663號公開了一種減少所需部件數量的方法。在前述專利中,公開了一種光纖轉接器,該光纖轉接器包括了放置兩個連接器閂鎖的單件式外殼以及對齊袖管。然而,為了將部件放置在殼體內,在殼體中設有窗口,並將一個外蓋焊接在外殼上以覆蓋該窗口。雖然前述美國專利的設計可以消除由於連接兩個殼體部件而導致的任何對齊問題,但是仍然需要許多部件和多個組裝步驟,包括將殼體罩蓋焊接在窗口上。A method of reducing the number of components required is disclosed in U.S. Patent No. 5,317,663, issued to A.S. Pat. In the aforementioned patent, an optical fiber adapter is disclosed that includes a one-piece housing with two connector latches and an aligned sleeve. However, in order to place the component within the housing, a window is provided in the housing and an outer cover is welded to the housing to cover the window. While the design of the aforementioned U.S. patent can eliminate any alignment problems caused by joining the two housing components, many components and multiple assembly steps are still required, including welding the housing cover to the window.
本發明之目的在於提供一種光纖轉接器。It is an object of the present invention to provide an optical fiber adapter.
於一實施方式中,本發明之光纖轉接器包含一外殼體及一內殼體。外殼體內形成有一第一對齊圓筒,用以容納一第一光纖。內殼體係一體形成並設置在外殼體內,該內殼體包含有一底板、一對固定夾以及一第二對齊圓筒。固定夾係從底板的正面延伸出,而第二對齊圓筒則設置在兩固定夾之間,並從底板的正面朝一縱向方向延伸出。第二對齊圓筒上形成有兩道相對設置的開槽,該兩開槽由第二對齊圓筒的外表面貫通至內表面,並且朝縱向方向延伸至底板的背面。In one embodiment, the fiber optic adapter of the present invention includes an outer casing and an inner casing. A first alignment cylinder is formed in the outer casing for receiving a first optical fiber. The inner casing is integrally formed and disposed within the outer casing, and the inner casing includes a bottom plate, a pair of fixing clips, and a second alignment cylinder. The fixing clip extends from the front surface of the bottom plate, and the second alignment cylinder is disposed between the two fixing clips and extends from the front surface of the bottom plate toward a longitudinal direction. Two oppositely disposed slots are formed in the second alignment cylinder, the two slots extending from the outer surface of the second alignment cylinder to the inner surface and extending in the longitudinal direction to the back surface of the bottom plate.
根據本發明之光纖轉接器,其中對齊圓筒上的兩道開槽能夠減少固定夾卡扣在光纖連接器時的應力,因此能夠有效降低潛變應變,達到長時間使內殼體結構不會變形的狀態。According to the optical fiber adapter of the present invention, the two slots on the alignment cylinder can reduce the stress when the fixing clip is buckled on the optical fiber connector, thereby effectively reducing the creep strain and achieving the inner casing structure for a long time. The state that will be deformed.
為了讓本發明之上述和其他目的、特徵、和優點能更明顯,下文特舉本發明實施例,並配合所附圖示,作詳細說明如下。The above and other objects, features, and advantages of the present invention will become more apparent from the embodiments of the invention.
請參照圖1,本發明之光纖轉接器,例如是SC型光纖轉接器包含有一外殼體100、一對齊袖管(sleeve)190以及一內殼體200。請參照圖2,外殼體100係以射出成型的方式以塑膠模造形成,大致上具有中空長方體的形狀。外殼體100內部設置有一對齊圓筒130,該對齊圓筒130係沿著一縱向方向延伸設置,且能夠在單次注塑成型過程中與外殼體100一起形成。對齊袖管190的一半能夠從對齊圓筒130的後端插入對齊圓筒130內。外殼體100的內部還設置有一個或多個擋塊140,各擋塊140上還形成有一斜面141。Referring to FIG. 1, the fiber optic adapter of the present invention, such as an SC-type fiber optic adapter, includes an outer casing 100, an aligned sleeve 190, and an inner casing 200. Referring to Fig. 2, the outer casing 100 is formed by plastic molding by injection molding, and has a substantially rectangular parallelepiped shape. The outer casing 100 is internally provided with an alignment cylinder 130 which extends in a longitudinal direction and which can be formed together with the outer casing 100 during a single injection molding process. One half of the aligned sleeve tube 190 can be inserted into the alignment cylinder 130 from the rear end of the alignment cylinder 130. The inside of the outer casing 100 is further provided with one or more stoppers 140, and each of the stoppers 140 is further formed with a slope 141.
請參照圖3a至3e,內殼體200係以射出成型的方式以塑膠模造形成,其包含有大致上為矩形的一底板210,該底板210具有一正面211與一背面212。底板210的正面211和背面212上分別延伸出有一對固定夾221、222。此外,底板210的正面211還延伸出有一對齊圓筒230,該對齊圓筒230係縱向設置且位在兩固定夾221之間。對齊圓筒230的前後兩端各具有一開口231、232,其中後端開口232係開設在底板210上。對齊圓筒230在垂直於縱向方向的橫向方向上具有中空圓形的截面,該對齊圓筒230的內徑在前段處是均勻的,並在接近開口231處突然變小。對齊圓筒230的內徑在後段處具有錐度,並且朝向開口232逐漸變大。若對齊圓筒230的前段內徑為r1、後段內徑為r2,則r1<r2。此外,底板210的兩相對側邊上還分別斜向外延伸出有一卡扣臂240。底板210的另兩個相對側邊上各形成有兩個長形的墊塊251、252。在兩墊塊251之間的底板210側邊上形成有兩凹槽261,而在兩墊塊252之間的底板210側邊上則形成有兩凹槽262。凹槽261、262為U字形凹槽,並且由底板210的正面211貫通至背面212。對齊圓筒230上形成有兩道對稱且相對設置的開槽235,該兩開槽235係由對齊圓筒230的外表面貫通至內表面,並且由對齊圓筒230的前段中央縱向延伸至底板210背面212。開槽235的寬度能夠設定在0.5mm至1.2mm之間。除此之外,在兩凹槽261之間的底板210側邊上形成有一拱形的架橋(bridge)271,該架橋271係橫跨在其中一道開槽235末端的上方,且架橋271的高度小於墊塊251的高度。架橋271下方形成有一缺口273,該缺口273係連通至位於其下方的開槽235。而在兩凹槽262之間的底板210側邊上則形成有一拱形的架橋272,該架橋272係橫跨在另一道開槽235末端的上方,且架橋272的高度小於墊塊252的高度。架橋272下方形成有一缺口274,該缺口274係連通至位於其下方的開槽235。Referring to FIGS. 3a to 3e, the inner casing 200 is formed by plastic molding in an injection molding manner, and comprises a substantially rectangular bottom plate 210 having a front surface 211 and a rear surface 212. A pair of fixing clips 221, 222 extend from the front surface 211 and the back surface 212 of the bottom plate 210, respectively. In addition, the front surface 211 of the bottom plate 210 further extends with an alignment cylinder 230 which is longitudinally disposed and positioned between the two fixing clips 221. The front and rear ends of the alignment cylinder 230 each have an opening 231, 232, wherein the rear end opening 232 is formed on the bottom plate 210. The alignment cylinder 230 has a hollow circular cross section in a lateral direction perpendicular to the longitudinal direction, and the inner diameter of the alignment cylinder 230 is uniform at the front portion and suddenly becomes small near the opening 231. The inner diameter of the alignment cylinder 230 has a taper at the rear portion and gradually becomes larger toward the opening 232. If the inner diameter of the front section of the alignment cylinder 230 is r1 and the inner diameter of the rear section is r2, then r1 < r2. In addition, a latching arm 240 extends obliquely outwardly from opposite sides of the bottom plate 210. Two elongated pads 251, 252 are formed on each of the other two opposite sides of the bottom plate 210. Two grooves 261 are formed on the side of the bottom plate 210 between the two blocks 251, and two grooves 262 are formed on the side of the bottom plate 210 between the two blocks 252. The grooves 261, 262 are U-shaped grooves and penetrate from the front surface 211 of the bottom plate 210 to the back surface 212. Two alignment and oppositely disposed slots 235 are formed in the alignment cylinder 230. The two slots 235 are penetrated from the outer surface of the alignment cylinder 230 to the inner surface, and extend longitudinally from the center of the front section of the alignment cylinder 230 to the bottom plate. 210 back 212. The width of the slit 235 can be set between 0.5 mm and 1.2 mm. In addition, an arched bridge 271 is formed on the side of the bottom plate 210 between the two recesses 261, the bridge 271 is spanned over the end of one of the slots 235, and the height of the bridge 271 Less than the height of the spacer 251. A notch 273 is formed below the bridge 271, and the notch 273 is connected to the slot 235 located below it. On the side of the bottom plate 210 between the two recesses 262, an arched bridge 272 is formed. The bridge 272 spans over the end of the other slot 235, and the height of the bridge 272 is smaller than the height of the spacer 252. . A notch 274 is formed below the bridge 272, and the notch 274 is communicated to the slot 235 located below it.
再請參照圖1、2及3a,本發明之光纖轉接器在組裝時,係將對齊袖管190的一半從對齊圓筒130的後端插入對齊圓筒130內。之後,將內殼體200塞入外殼體100內,並使對齊袖管190的另一半從對齊圓筒230的後端插入對齊圓筒230內。圖4顯示了本發明組裝完成後的光纖轉接器。Referring again to Figures 1, 2 and 3a, the fiber optic adapter of the present invention, when assembled, inserts one half of the aligned sleeve 190 into the alignment cylinder 130 from the rear end of the alignment cylinder 130. Thereafter, the inner casing 200 is inserted into the outer casing 100, and the other half of the aligned sleeve tube 190 is inserted into the alignment cylinder 230 from the rear end of the alignment cylinder 230. Figure 4 shows the assembled fiber optic adapter of the present invention.
依據本發明之光纖轉接器,其中當內殼體200塞入外殼體100內時,內殼體200上的卡扣臂240會在擋塊140上的斜面141滑動。請參照圖4,當內殼體200組裝至定位時,擋塊140能夠阻擋卡扣臂240,藉此防止內殼體200拉出外殼體100外。According to the optical fiber adapter of the present invention, when the inner casing 200 is inserted into the outer casing 100, the snap arms 240 on the inner casing 200 slide on the slope 141 on the stopper 140. Referring to FIG. 4, when the inner casing 200 is assembled to the positioning, the stopper 140 can block the snap arm 240, thereby preventing the inner casing 200 from being pulled out of the outer casing 100.
依據本發明之光纖轉接器,其中一光纖連接器的套管(ferrule)連同其內的光纖能夠插入對齊圓筒130內,並且插入對齊袖管190的一端;另一光纖連接器的套管連同其內的光纖則能夠插入對齊圓筒230內,並插入對齊袖管190的另一端,而且能夠和對面的套管接觸,藉此讓兩套管內的光纖能夠對接。According to the fiber optic adapter of the present invention, a ferrule of a fiber optic connector together with an optical fiber therein can be inserted into the alignment cylinder 130 and inserted into one end of the aligned sleeve tube 190; the sleeve of the other fiber optic connector together with The fiber therein can be inserted into the alignment cylinder 230 and inserted into the other end of the aligned sleeve tube 190, and can be brought into contact with the opposite sleeve, thereby allowing the fibers in the two sleeves to be docked.
在傳統的光纖轉接器中,其所包含的固定夾係用來分別卡扣在一光纖連接器上,以讓該兩光纖連接器能夠對接。由於光纖連接器內係設有彈簧,光纖連接器長時間的對接會造成潛變(creep)而使固定夾往外擴,因此導致固定夾的作用失效。In a conventional fiber optic adapter, the retaining clips are included for snapping onto a fiber optic connector to allow the two fiber optic connectors to be docked. Since the fiber connector is provided with a spring, the long-term docking of the fiber connector causes a creep and the fixing clip is expanded outward, thereby causing the function of the fixing clip to fail.
為解決前述問題,本發明之光纖轉接器係在對齊圓筒230上開設兩道相對設置的開槽235。經過模擬及實驗結果,該兩開槽235的設置能夠減少固定夾221、222卡扣在光纖連接器時的應力,因此能夠有效降低潛變應變,達到長時間使內殼體200結構不會變形的狀態。由於形成開槽235後對齊圓筒230會壓縮而壓迫到對齊袖管190,對齊圓筒230的內部因此設置成朝向開口232逐漸變大,以增加裕度(allowance)讓對齊袖管190受壓力減小。In order to solve the foregoing problems, the optical fiber adapter of the present invention has two oppositely disposed slots 235 in the alignment cylinder 230. Through the simulation and experimental results, the two slots 235 can reduce the stress when the clips 221 and 222 are buckled on the fiber connector, so that the creep strain can be effectively reduced, and the inner casing 200 structure is not deformed for a long time. status. Since the alignment cylinder 230 is compressed and pressed into the aligned sleeve tube 190 after the formation of the slit 235, the interior of the alignment cylinder 230 is thus arranged to gradually become larger toward the opening 232 to increase the allowance to reduce the pressure of the alignment sleeve 190. .
由於對齊圓筒230形成開槽235會造成在製作內殼體200時,固定夾222的生產尺寸難以控制,因此分別形成拱形的架橋271、272以橫跨開槽235末端,來防止底板210彎曲變形。形成在架橋271兩端的U形凹槽261以及形成在架橋272兩端的U形凹槽262係分別用來分擔架橋271、272的受力。一般來說,若凹槽261、262的寬度越大則架橋271、272的受力越小,但會使得內殼體200整體的剛性較差。另外,因墊塊251的高度大於架橋271的高度,因此可防止架橋271直接與外殼體100的內壁接觸。同樣地,墊塊252也可防止架橋272直接與外殼體100的內壁接觸。Since the alignment cylinder 230 is formed with the slit 235, the production size of the fixing clip 222 is difficult to control when the inner casing 200 is fabricated, so that arched bridges 271, 272 are respectively formed to extend across the end of the slot 235 to prevent the bottom plate 210. Bending deformation. U-shaped grooves 261 formed at both ends of the bridge 271 and U-shaped grooves 262 formed at both ends of the bridge 272 are used to share the forces of the bridges 271, 272, respectively. In general, if the width of the grooves 261, 262 is larger, the force applied to the bridges 271, 272 is smaller, but the rigidity of the inner casing 200 as a whole is poor. In addition, since the height of the spacer 251 is larger than the height of the bridge 271, the bridge 271 can be prevented from directly contacting the inner wall of the outer casing 100. Likewise, the spacer 252 also prevents the bridge 272 from directly contacting the inner wall of the outer casing 100.
雖然本發明已以前述實施例揭示,然其並非用以限定本發明,任何本發明所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作各種之更動與修改。因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。The present invention has been disclosed in the foregoing embodiments, and is not intended to limit the present invention. Any of the ordinary skill in the art to which the invention pertains can be modified and modified without departing from the spirit and scope of the invention. . Therefore, the scope of the invention is defined by the scope of the appended claims.
100‧‧‧外殼體
130‧‧‧對齊圓筒
140‧‧‧擋塊
141‧‧‧斜面
190‧‧‧對齊袖管
200‧‧‧內殼體
210‧‧‧底板
211‧‧‧正面
212‧‧‧背面
221‧‧‧固定夾
222‧‧‧固定夾
230‧‧‧對齊圓筒
231‧‧‧開口
232‧‧‧開口
235‧‧‧開槽
240‧‧‧卡扣臂
251‧‧‧墊塊
252‧‧‧墊塊
261‧‧‧凹槽
262‧‧‧凹槽
271‧‧‧架橋
272‧‧‧架橋
273‧‧‧缺口
274‧‧‧缺口
r1‧‧‧前段內徑
r2‧‧‧後段內徑100‧‧‧ outer casing
130‧‧‧Alignment cylinder
140‧‧ ‧stop
141‧‧‧Bevel
190‧‧‧Aligned sleeves
200‧‧‧ inner casing
210‧‧‧floor
211‧‧‧ positive
212‧‧‧Back
221‧‧‧fixed clip
222‧‧‧fixed clip
230‧‧‧Alignment cylinder
231‧‧‧ openings
232‧‧‧ openings
235‧‧‧ slotting
240‧‧‧ buckle arm
251‧‧‧ blocks
252‧‧‧ pads
261‧‧‧ Groove
262‧‧‧ Groove
271‧‧‧ Bridge
272‧‧ ‧ Bridge
273‧‧‧ gap
274‧‧‧ gap
R1‧‧‧ front section inner diameter
R2‧‧‧ rear section inner diameter
圖1為本發明之光纖轉接器的立體分解圖。 圖2為本發明之光纖轉接器的外殼體的剖視圖。 圖3a與3b為本發明之光纖轉接器的內殼體在不同視角下的立體圖。 圖3c為本發明之光纖轉接器的內殼體的前視圖。 圖3d為本發明之光纖轉接器的內殼體的後視圖。 圖3e為本發明之光纖轉接器的內殼體的剖視圖。 圖4為本發明之光纖轉接器的剖視圖。1 is an exploded perspective view of an optical fiber adapter of the present invention. 2 is a cross-sectional view of the outer casing of the optical fiber adapter of the present invention. 3a and 3b are perspective views of the inner casing of the optical fiber adapter of the present invention at different viewing angles. Figure 3c is a front elevational view of the inner housing of the fiber optic adapter of the present invention. Figure 3d is a rear elevational view of the inner housing of the fiber optic adapter of the present invention. Figure 3e is a cross-sectional view of the inner casing of the fiber optic adapter of the present invention. 4 is a cross-sectional view of the fiber optic adapter of the present invention.
Claims (10)
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TW106141449A TWI632407B (en) | 2017-11-28 | 2017-11-28 | Optical fiber adapter |
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TW106141449A TWI632407B (en) | 2017-11-28 | 2017-11-28 | Optical fiber adapter |
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TW201925840A TW201925840A (en) | 2019-07-01 |
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Cited By (1)
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CN113311546A (en) * | 2020-02-26 | 2021-08-27 | 立佳兴业股份有限公司 | Buckle structure and optical connector socket thereof |
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TWI766533B (en) * | 2020-11-03 | 2022-06-01 | 立佳興業股份有限公司 | Latch structure and optical receptacle thereof |
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