JP5303402B2 - Optical communication component and manufacturing method thereof - Google Patents

Optical communication component and manufacturing method thereof Download PDF

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JP5303402B2
JP5303402B2 JP2009196821A JP2009196821A JP5303402B2 JP 5303402 B2 JP5303402 B2 JP 5303402B2 JP 2009196821 A JP2009196821 A JP 2009196821A JP 2009196821 A JP2009196821 A JP 2009196821A JP 5303402 B2 JP5303402 B2 JP 5303402B2
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JP2011048171A (en
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恵太 島倉
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Yazaki Corp
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Description

本発明は、光通信素子を内蔵する光通信部品及びその製造方法に関する。   The present invention relates to an optical communication component incorporating an optical communication element and a method for manufacturing the same.

例えば、自動車内の伝送情報の大容量化、高速化に対処するため、自動車内でも光ファイバケーブルによる光通信システムが採用されるようになってきている。このような光通信システムを構成する車載用光通信部品の一つとして、光トランシーバ（ＦＯＴ：Ｆｉｂｅｒ Ｏｐｔｉｃａｌ Ｔｒａｎｓｃｅｉｖｅｒ）を内蔵した光コネクタが用いられる（特許文献１参照）。   For example, in order to cope with an increase in capacity and speed of transmission information in an automobile, an optical communication system using an optical fiber cable has been adopted in the automobile. As one of in-vehicle optical communication components constituting such an optical communication system, an optical connector incorporating an optical transceiver (FOT: Fiber Optical Transceiver) is used (see Patent Document 1).

この種の従来の光コネクタ５０は、図４に示すように、相手側光コネクタ（図示せず）が嵌合されるコネクタハウジング５１と、このコネクタハウジング５１内に配置される一対の光トランシーバ６０とを備えている。   As shown in FIG. 4, this type of conventional optical connector 50 includes a connector housing 51 into which a counterpart optical connector (not shown) is fitted, and a pair of optical transceivers 60 arranged in the connector housing 51. And.

コネクタハウジング５１は、外壁部５１ａと嵌合先端壁５１ｂに囲まれたコネクタ嵌合室５２を有する。このコネクタ嵌合室５２に相手側光コネクタ（図示せず）が嵌合される。嵌合先端壁５１ｂの二箇所には、コネクタ嵌合室５２に向かって円筒状の光ファイバ位置決め部５３が突出されている。相手側コネクタ（図示せず）が嵌合されると、相手側コネクタ（図示せず）の光ファイバ（図示せず）の先端部が光ファイバ位置決め部５３によって位置決めされる。又、コネクタハウジング５１は、嵌合先端壁５１ｂのコネクタ嵌合室５２の反対側に光トランシーバ固定壁５１ｃを有する。   The connector housing 51 has a connector fitting chamber 52 surrounded by an outer wall portion 51a and a fitting tip wall 51b. A mating optical connector (not shown) is fitted into the connector fitting chamber 52. Cylindrical optical fiber positioning portions 53 protrude toward the connector fitting chamber 52 at two places on the fitting tip wall 51b. When the mating connector (not shown) is fitted, the tip of the optical fiber (not shown) of the mating connector (not shown) is positioned by the optical fiber positioning unit 53. The connector housing 51 has an optical transceiver fixing wall 51c on the opposite side of the connector fitting chamber 52 of the fitting tip wall 51b.

各光トランシーバ６０は、光トランシーバ固定壁５１ｃに固定され、集光レンズ６６がファイバ位置決め部５３の内部に突出された状態で配置されている。   Each optical transceiver 60 is fixed to the optical transceiver fixing wall 51 c, and the condensing lens 66 is arranged in a state of protruding into the fiber positioning portion 53.

各光トランシーバ６０は、リードフレーム６１と光電変換素子（図示せず）と、これらの外周を覆うように配置された樹脂成形部６３とを備えている。樹脂成形部６３は、リードフレーム６１の外周に配置されたベース部６４と、このベース部６４より突出された突出部６５と、突出部６５の上端に設けられた集光レンズ６６とを備え、これらが光伝搬可能な樹脂材より一体に形成されている。樹脂成形部６３は、ベース部６４と集光レンズ６６を有する突出部６５とから構成されている。突出部６５の側壁面は、ベース部６４より先端側に向かって徐々に縮径する円錐状のテーパ側壁面６５ａとして構成されている。   Each optical transceiver 60 includes a lead frame 61, a photoelectric conversion element (not shown), and a resin molding portion 63 disposed so as to cover the outer periphery thereof. The resin molding portion 63 includes a base portion 64 disposed on the outer periphery of the lead frame 61, a protruding portion 65 protruding from the base portion 64, and a condenser lens 66 provided at the upper end of the protruding portion 65, These are integrally formed of a resin material capable of transmitting light. The resin molding part 63 includes a base part 64 and a protruding part 65 having a condenser lens 66. The side wall surface of the projecting portion 65 is configured as a conical tapered side wall surface 65 a that gradually decreases in diameter from the base portion 64 toward the distal end side.

かかる光コネクタ５０の製造方法の一従来例を簡単に説明する。先ず、リードフレーム６１及び光電変換素子（図示せず）をインサート成形の内部部品として樹脂成形部６３を一次成形を行い、光トランシーバ６０を作製する。次に、光トランシーバ６０をインサート成形の内部部品として二次成形を行い、コネクタハウジング５１を作製する。   A conventional example of a method for manufacturing the optical connector 50 will be briefly described. First, the resin transceiver 63 is primarily molded using the lead frame 61 and a photoelectric conversion element (not shown) as internal parts for insert molding, and the optical transceiver 60 is manufactured. Next, secondary molding is performed using the optical transceiver 60 as an internal part of insert molding, and the connector housing 51 is manufactured.

二次成形に用いられる金型７０は、図５（ａ）、（ｂ）に示すように、筒状の光ファイバ位置決め部５３の外周面を形成するための外周ブロック部７１と、筒状の光ファイバ位置決め部５３の内周面を形成するための内周筒部７２とを備えている。そして、金型密閉過程では、内周筒部７２が光トランシーバ２０の突出部６５の外周にガイドされつつ挿入され、図５（ｂ）に示すように、内周筒部７２の先端面７２ａが光トランシーバ６０のベース部６４の上面で、且つ、突出部６５との境界に突き当たる位置まで挿入される。   As shown in FIGS. 5A and 5B, the mold 70 used for the secondary molding includes an outer peripheral block portion 71 for forming the outer peripheral surface of the cylindrical optical fiber positioning portion 53, and a cylindrical shape. And an inner peripheral cylindrical portion 72 for forming the inner peripheral surface of the optical fiber positioning portion 53. Then, in the mold sealing process, the inner peripheral cylindrical portion 72 is inserted while being guided by the outer periphery of the protruding portion 65 of the optical transceiver 20, and as shown in FIG. The optical transceiver 60 is inserted to the upper surface of the base portion 64 and to a position where it hits the boundary with the protruding portion 65.

金型７０内への樹脂注入時には、図５（ａ）にて矢印で示すように、溶融樹脂が光トランシーバ６０のベース部６４の外周に流れ込むことによって光トランシーバ固定壁５１ｃが成形されると共に、外周ブロック部７１と内周筒部７２の間のスペースに流れ込むことによって光ファイバ位置決め部５３が成形される。   At the time of injecting resin into the mold 70, as indicated by an arrow in FIG. 5A, the molten resin flows into the outer periphery of the base portion 64 of the optical transceiver 60, thereby forming the optical transceiver fixing wall 51c. The optical fiber positioning portion 53 is formed by flowing into the space between the outer peripheral block portion 71 and the inner peripheral cylindrical portion 72.

特開２００１−６６４６９号公報JP 2001-66469 A

しかしながら、前記従来例では、金型７０の内周筒部７２の最終的な挿入位置では、突出部６５の外周面がテーパ側壁面６５ａであるため、図６に示すように、光トランシーバ６０の突出部６５に対し金型７０の内周筒部７２が相対的に傾斜可能であり、突出部６５の軸方向（集光レンズ６６の光軸方向）Ｃ３と内周筒部７２の軸方向（光ファイバの光軸方向）Ｃ４がずれた状態で二次成形が行われる恐れがある。すると、集光レンズ６６の光軸方向Ｃ３と光ファイバの光軸方向Ｃ４が一致しないため、高精度な光通信を行うことができない。車載用光通信では、通信速度が上がれば上がるほど、光トランシーバ側と光ファイバ側の光軸精度が要求され、その対策が必要とされている。   However, in the conventional example, at the final insertion position of the inner peripheral cylindrical portion 72 of the mold 70, the outer peripheral surface of the protruding portion 65 is the tapered side wall surface 65a. The inner peripheral cylindrical portion 72 of the mold 70 can be inclined relative to the protruding portion 65, and the axial direction of the protruding portion 65 (the optical axis direction of the condenser lens 66) C3 and the axial direction of the inner peripheral cylindrical portion 72 ( There is a risk that secondary molding may be performed in a state where C4 is shifted. Then, since the optical axis direction C3 of the condensing lens 66 and the optical axis direction C4 of the optical fiber do not coincide, high-precision optical communication cannot be performed. In in-vehicle optical communication, as the communication speed increases, the optical axis accuracy on the optical transceiver side and the optical fiber side is required, and countermeasures are required.

そこで、本発明は、前記した課題を解決すべくなされたものであり、光通信素子側の光軸と光ファイバ側の光軸を精度良く一致させることができる光通信部品及びその製造方法を提供することを目的とする。   Accordingly, the present invention has been made to solve the above-described problems, and provides an optical communication component capable of accurately matching the optical axis on the optical communication element side and the optical axis on the optical fiber side, and a method for manufacturing the same. The purpose is to do.

請求項１の発明は、ベース部に突出部が突出され、前記突出部の上端に集光レンズを有する光通信素子と、前記光通信素子を固定する素子固定部と、前記突出部の周囲に筒状に突設され、挿入される光ファイバの位置決めを行う光ファイバ位置決め部とを有する二次樹脂成形部とを備え、前記突出部の根本箇所は、前記ベース部の上面に対し垂直なストレート側壁面であり、前記突出部の外周と前記光ファイバ位置決め部の内周の間には、金型が挿入される金型挿入スペースが設けられ、前記金型挿入スペースに挿入された前記金型が前記ストレート側壁面の外周面に対し相対的に傾斜不能とされ、前記集光レンズの光軸と前記光ファイバの光軸が一致されたことを特徴とする光通信部品である。 According to the first aspect of the present invention, there is provided an optical communication element having a protruding portion protruding from a base portion and having a condenser lens at an upper end of the protruding portion, an element fixing portion for fixing the optical communication element, and a periphery of the protruding portion. And a secondary resin molding part that has an optical fiber positioning part that projects in a cylindrical shape and positions an optical fiber to be inserted, and the base part of the protruding part is a straight line perpendicular to the upper surface of the base part A mold insertion space into which a mold is inserted is provided between the outer periphery of the protruding portion and the inner periphery of the optical fiber positioning portion, and the mold inserted into the mold insertion space. Is an optical communication component characterized in that it can not be inclined relative to the outer peripheral surface of the straight side wall surface, and the optical axis of the condenser lens and the optical axis of the optical fiber coincide with each other .

請求項２の発明は、請求項１記載の光通信部品であって、前記突出部の前記ストレート側壁面より先端箇所は、先端に向かうに従って縮径されたテーパ側壁面であることを特徴とする光通信部品である。   A second aspect of the present invention is the optical communication component according to the first aspect, wherein the tip portion of the projecting portion is a tapered side wall surface having a diameter reduced toward the tip. It is an optical communication component.

請求項３の発明は、請求項１又は請求項２に記載の光通信部品であって、前記二次樹脂成形部は、コネクタハウジングであることを特徴とする光通信部品である。   A third aspect of the present invention is the optical communication component according to the first or second aspect, wherein the secondary resin molded portion is a connector housing.

請求項４の発明は、ベース部に突出部が突出され、前記突出部の根本箇所が前記ベース部の上面に対し垂直なストレート側壁面であり、且つ、前記記突出部の上端に集光レンズを有する光通信素子を作製し、前記光通信素子をインサート成形の内部部品として、前記光通信素子を固定する素子固定部と、前記突出部の周囲に突設され、挿入される光ファイバの位置決めを行う光ファイバ位置決め部とを有する二次樹脂成形部を作製する光通信部品の製造方法であって、前記二次樹脂成形部を作製する成形過程では、金型の内周筒部が前記突出部の外周にガイドされつつ挿入され、内周筒部の最終的な挿入位置では、内周筒部が突出部のストレート側壁面にガイドされた状態で樹脂の射出成形を行うことを特徴とする光通信部品の製造方法である。   According to a fourth aspect of the present invention, a protruding portion is protruded from the base portion, a root portion of the protruding portion is a straight side wall surface perpendicular to the upper surface of the base portion, and a condensing lens is provided at the upper end of the protruding portion. An optical communication element having the optical communication element as an internal part of insert molding, and an element fixing portion for fixing the optical communication element, and a positioning of an optical fiber that is provided around and protrudes from the protrusion An optical communication component manufacturing method for producing a secondary resin molded part having an optical fiber positioning part for performing the molding, wherein in the molding process for producing the secondary resin molded part, the inner peripheral cylindrical part of the mold protrudes. It is inserted while being guided by the outer periphery of the part, and at the final insertion position of the inner peripheral cylindrical part, resin injection molding is performed in a state where the inner peripheral cylindrical part is guided by the straight side wall surface of the protruding part. A method for manufacturing optical communication components. .

請求項５の発明は、請求項４記載の光通信部品の製造方法であって、前記突出部の前記ストレート側壁面より先端箇所は、先端に向かうに従って縮径されたテーパ側壁面であることを特徴とする光通信部品の製造方法である。   A fifth aspect of the present invention is the method of manufacturing an optical communication component according to the fourth aspect, wherein the tip portion of the projecting portion is a tapered side wall surface having a diameter reduced toward the front end. It is the manufacturing method of the optical communication component characterized.

請求項１の発明によれば、光通信素子をインサート成形の内部部品として二次樹脂成形部を作製する際に、金型の内周筒部が光通信素子の突出部の外周に挿入され、内周筒部の最終的な挿入位置では、内周筒部が突出部のストレート側壁面にガイドされるため、内周筒部の軸方向が突出部の軸方向に一致し、これにより、内周筒部の先端面が突出部の周囲のベース部の面に全周状で隙間なく当接するため、突出部の軸と光ファイバ位置決め部の軸が精度良く一致する。これにより、光通信素子側の光軸と光ファイバ側の光軸を精度良く一致させることができる。   According to the invention of claim 1, when producing the secondary resin molding part using the optical communication element as an internal part of insert molding, the inner peripheral cylindrical part of the mold is inserted into the outer periphery of the protruding part of the optical communication element, At the final insertion position of the inner peripheral cylindrical portion, the inner peripheral cylindrical portion is guided by the straight side wall surface of the protruding portion, so that the axial direction of the inner peripheral cylindrical portion coincides with the axial direction of the protruding portion. Since the front end surface of the peripheral tube portion is in contact with the surface of the base portion around the protruding portion without any gaps, the axis of the protruding portion and the axis of the optical fiber positioning portion are accurately aligned. Thereby, the optical axis on the optical communication element side and the optical axis on the optical fiber side can be made to coincide with each other with high accuracy.

請求項２の発明によれば、請求項１の発明の効果に加え、光通信素子をインサート成形の内部部品として二次樹脂成形部を作製する際に、金型の内周筒部が光通信素子の突出部の外周にガイドされつつスムーズに挿入される。   According to the invention of claim 2, in addition to the effect of the invention of claim 1, when the secondary resin molded part is produced using the optical communication element as an internal part of insert molding, the inner peripheral cylindrical part of the mold is optically communicated. It is smoothly inserted while being guided by the outer periphery of the protruding portion of the element.

請求項３の発明によれば、二次樹脂成形部がコネクタハウジングである場合に、請求項１又は請求項２の発明の効果を得ることができる。   According to invention of Claim 3, when the secondary resin molding part is a connector housing, the effect of invention of Claim 1 or Claim 2 can be acquired.

請求項４の発明によれば、光通信素子をインサート成形の内部部品として二次樹脂成形部を作製する際に、金型の内周筒部が光通信素子の突出部の外周に挿入され、内周筒部の最終的な挿入位置では、内周筒部が突出部のストレート側壁面にガイドされるため、内周筒部の軸方向が突出部の軸方向に一致し、これにより、内周筒部の先端面が突出部の周囲のベース部の面に全周状で隙間なく当接するため、突出部の軸と光ファイバ位置決め部の軸が精度良く一致する。これにより、光通信素子側の光軸と光ファイバ側の光軸を精度良く一致させることができる。   According to the invention of claim 4, when producing the secondary resin molding part using the optical communication element as an internal part of insert molding, the inner peripheral cylindrical part of the mold is inserted into the outer periphery of the protruding part of the optical communication element, At the final insertion position of the inner peripheral cylindrical portion, the inner peripheral cylindrical portion is guided by the straight side wall surface of the protruding portion, so that the axial direction of the inner peripheral cylindrical portion coincides with the axial direction of the protruding portion. Since the front end surface of the peripheral tube portion is in contact with the surface of the base portion around the protruding portion without any gaps, the axis of the protruding portion and the axis of the optical fiber positioning portion are accurately aligned. Thereby, the optical axis on the optical communication element side and the optical axis on the optical fiber side can be made to coincide with each other with high accuracy.

請求項５の発明によれば、請求項４の発明の効果に加え、光通信素子をインサート成形の内部部品として二次樹脂成形部を作製する際に、金型の内周筒部が光通信素子の突出部の外周にガイドされつつスムーズに挿入される。   According to the invention of claim 5, in addition to the effect of the invention of claim 4, when the secondary resin molded part is produced using the optical communication element as an internal part of insert molding, the inner peripheral cylindrical part of the mold is optically communicated. It is smoothly inserted while being guided by the outer periphery of the protruding portion of the element.

本発明の一実施形態を示し、光コネクタの断面図である。1 is a cross-sectional view of an optical connector according to an embodiment of the present invention. 本発明の一実施形態を示し、光トランシーバの断面図である。1 is a cross-sectional view of an optical transceiver according to an embodiment of the present invention. 本発明の一実施形態を示し、（ａ）は二次樹脂成形時における金型の密閉時の要部断面図、（ｂ）は（ａ）のＰ部拡大図である。1 shows an embodiment of the present invention, wherein (a) is a cross-sectional view of a main part when a mold is sealed during molding of a secondary resin, and (b) is an enlarged view of a P part of (a). 従来例の光コネクタの断面図である。It is sectional drawing of the optical connector of a prior art example. 従来例を示し、（ａ）は二次樹脂成形時における金型の密閉時の要部断面図、（ｂ）は（ａ）のＱ部拡大図である。A prior art example is shown, (a) is a principal part sectional view at the time of sealing of the metal mold | die at the time of secondary resin molding, (b) is the Q section enlarged view of (a). 従来例を示し、光トランシーバの突出部に対し金型の内周筒部が相対的に傾斜した状態を示す断面図である。It is sectional drawing which shows a prior art example and shows the state which the inner peripheral cylinder part of the metal mold | die inclined relatively with respect to the protrusion part of the optical transceiver.

以下、本発明の一実施形態を図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１〜図３は本発明の一実施形態を示し、図１は光コネクタ１の断面図、図２は光トランシーバ２０の断面図、図３（ａ）は二次樹脂成形時における金型３０の密閉時の要部断面図、図３（ｂ）は図３（ａ）のＰ部拡大図である。   1 to 3 show an embodiment of the present invention, FIG. 1 is a sectional view of an optical connector 1, FIG. 2 is a sectional view of an optical transceiver 20, and FIG. 3 (a) is a mold 30 at the time of secondary resin molding. FIG. 3B is an enlarged view of a P portion of FIG. 3A.

図１に示すように、光通信部品である光コネクタ１は、相手側光コネクタ（図示せず）が嵌合される二次樹脂成形部であるコネクタハウジング２と、このコネクタハウジング２の外周を覆うシールドケース（図示せず）と、コネクタハウジング２内に配置される光通信素子である一対の光トランシーバ２０（ＦＯＴ：Ｆｉｂｅｒ Ｏｐｔｉｃａｌ Ｔｒａｎｓｃｅｉｖｅｒ）とを備えている。   As shown in FIG. 1, an optical connector 1 that is an optical communication component includes a connector housing 2 that is a secondary resin molding portion into which a mating optical connector (not shown) is fitted, and an outer periphery of the connector housing 2. A shielding case (not shown) for covering and a pair of optical transceivers 20 (FOT: Fiber Optical Transceiver) which are optical communication elements arranged in the connector housing 2 are provided.

コネクタハウジング２は、方形枠状に囲まれた外壁３と、その先端側に配置された嵌合先端壁４とを有し、これらによって内部にコネクタ嵌合室５が設けられている。このコネクタ嵌合室５に相手側光コネクタ（図示せず）が嵌合される。嵌合先端壁４のコネクタ嵌合室側の面がコネクタ嵌合先端面４ａである。相手側光コネクタ（図示せず）のコネクタハウジング（図示せず）がコネクタ嵌合先端面４ａに突き当たる位置が適正な嵌合位置である。嵌合先端壁４の二箇所には、コネクタ嵌合室５に向かって円筒状の光ファイバ位置決め部６が突出されている。相手側コネクタ（図示せず）が嵌合されると、相手側コネクタ（図示せず）の光ファイバ（図示せず）の先端部が光ファイバ位置決め部６によって位置決めされる。又、コネクタハウジング２は、嵌合先端壁４のコネクタ嵌合室５の反対側に素子固定部である光トランシーバ固定壁７を有する。   The connector housing 2 has an outer wall 3 surrounded by a rectangular frame shape, and a fitting tip wall 4 arranged on the tip side thereof, and a connector fitting chamber 5 is provided inside thereof. A mating optical connector (not shown) is fitted into the connector fitting chamber 5. A surface on the connector fitting chamber side of the fitting tip wall 4 is a connector fitting tip surface 4a. The position where the connector housing (not shown) of the mating optical connector (not shown) abuts against the connector fitting tip surface 4a is an appropriate fitting position. Cylindrical optical fiber positioning portions 6 protrude toward the connector fitting chamber 5 at two locations on the fitting tip wall 4. When the mating connector (not shown) is fitted, the tip of the optical fiber (not shown) of the mating connector (not shown) is positioned by the optical fiber positioning unit 6. Further, the connector housing 2 has an optical transceiver fixing wall 7 as an element fixing portion on the opposite side of the fitting front end wall 4 to the connector fitting chamber 5.

各光トランシーバ２０は、光トランシーバ固定壁７に固定され、下記する集光レンズ１０が光ファイバ位置決め部６の内部に突出された状態で配置されている。各光トランシーバ２０は、図２に詳しく示すように、リードフレーム２１と、このリードフレーム２１上に配置されたセラミックス基板２２と、このセラミックス基板２２上に配置された光電変換素子２３と、リードフレーム２１、セラミックス基板２２及び光電変換素子２３の外周に配置され、これらの部材を固定する樹脂成形部２４とを備えている。   Each optical transceiver 20 is fixed to the optical transceiver fixing wall 7, and a condenser lens 10 described below is arranged in a state of protruding into the optical fiber positioning unit 6. As shown in detail in FIG. 2, each optical transceiver 20 includes a lead frame 21, a ceramic substrate 22 disposed on the lead frame 21, a photoelectric conversion element 23 disposed on the ceramic substrate 22, and a lead frame. 21, the ceramic substrate 22 and the photoelectric conversion element 23 are disposed on the outer periphery, and a resin molding portion 24 for fixing these members is provided.

各光電変換素子２３は、セラミックス基板２２の高さによって、下記する集光レンズ１０に対して適正な光通信を行うことができる距離に配置されている。   Each photoelectric conversion element 23 is disposed at a distance at which proper optical communication can be performed with respect to the condenser lens 10 described below, depending on the height of the ceramic substrate 22.

一対の光電変換素子２３は、その一方が発光素子であり、他方が受光素子である。各光電変換素子２３は、集光レンズ１０の焦点位置に配置され、セラミックス基板２２と導通ワイヤー２５ａ，２５ｂを介して所定のリードフレーム２１に電気的に接続されている。   One of the pair of photoelectric conversion elements 23 is a light emitting element, and the other is a light receiving element. Each photoelectric conversion element 23 is disposed at the focal position of the condenser lens 10 and is electrically connected to a predetermined lead frame 21 via the ceramic substrate 22 and the conductive wires 25a and 25b.

樹脂成形部２４は、リードフレーム２１の外周を覆うベース部２６と、このベース部２６より上方に突出された突出部２７と、この突出部２７の上端に設けられた集光レンズ１０とから成り、これらが光伝搬可能な樹脂材より一体に形成されている。突出部２７の側壁面は、その根本箇所がベース部２６の上面に対し垂直な円周状のストレート側壁面２７ａに、このストレート側壁面２７ａより先端箇所が先端に向かうに従って縮径された円錐状のテーパ側壁面２７ｂに形成されている。
突出部２７の外周と光ファイバ位置決め部６の内周の間には、金型３０の内周筒部３２が挿入される金型挿入スペース４０が設けられている。 The resin molded portion 24 includes a base portion 26 that covers the outer periphery of the lead frame 21, a protruding portion 27 that protrudes upward from the base portion 26, and the condenser lens 10 that is provided at the upper end of the protruding portion 27. These are integrally formed of a resin material capable of transmitting light. The side wall surface of the projecting portion 27 is a circular straight side wall surface 27a whose root portion is perpendicular to the upper surface of the base portion 26, and a conical shape whose diameter decreases from the straight side wall surface 27a toward the front end. Are formed on the tapered side wall surface 27b.
Between the outer periphery of the protruding portion 27 and the inner periphery of the optical fiber positioning portion 6, a mold insertion space 40 into which the inner peripheral cylindrical portion 32 of the mold 30 is inserted is provided.

次に、光コネクタ１の製造方法を説明する。先ず、リードフレーム２１、セラミックス基板２２及び光電変換素子２３をインサート成形の内部部品として樹脂成形部２４を成形し、これによって光トランシーバ２０を作製する。この一次樹脂成形工程によって集光レンズ１０が樹脂成形部２４によって一体に形成される。   Next, a method for manufacturing the optical connector 1 will be described. First, the resin molding part 24 is formed by using the lead frame 21, the ceramic substrate 22 and the photoelectric conversion element 23 as internal parts for insert molding, thereby producing the optical transceiver 20. The condenser lens 10 is integrally formed by the resin molding portion 24 by this primary resin molding process.

次に、光トランシーバ２０をインサート成形の内部部品としてコネクタハウジング２を二次樹脂成形によって作製する。   Next, the connector housing 2 is fabricated by secondary resin molding using the optical transceiver 20 as an internal part for insert molding.

最後に、コネクタハウジング２の外周にシールドケース（図示せず）を装着すれば、完了する。   Finally, when a shield case (not shown) is attached to the outer periphery of the connector housing 2, the process is completed.

前記した二次樹脂成形過程を詳細に説明する。二次樹脂成形に用いられる金型３０は、図３（ａ）、（ｂ）に示すように、筒状の光ファイバ位置決め部６の外周面を形成するための外周ブロック部３１と、筒状の光ファイバ位置決め部６の内周面を形成するための内周筒部３２とを備えている。金型密閉過程では、内周筒部３２が光トランシーバ２０の突出部２７のテーパ側壁面２７ｂにガイドされつつ挿入される。そして、図３（ｂ）に示すように、内周筒部３２の先端面３２ａが光トランシーバ２０のベース部２６の上面で、且つ、突出部２７との境界に突き当たる位置まで挿入される。   The above-described secondary resin molding process will be described in detail. As shown in FIGS. 3A and 3B, the mold 30 used for the secondary resin molding includes an outer peripheral block portion 31 for forming the outer peripheral surface of the cylindrical optical fiber positioning portion 6, and a cylindrical shape. And an inner peripheral cylindrical portion 32 for forming an inner peripheral surface of the optical fiber positioning portion 6. In the mold sealing process, the inner peripheral cylindrical portion 32 is inserted while being guided by the tapered side wall surface 27 b of the protruding portion 27 of the optical transceiver 20. Then, as shown in FIG. 3 (b), the distal end surface 32 a of the inner peripheral cylindrical portion 32 is inserted to a position where it abuts on the upper surface of the base portion 26 of the optical transceiver 20 and the boundary with the protruding portion 27.

金型３０内への樹脂注入時には、溶融樹脂は、図３（ａ）にて矢印で示すように、光トランシーバ２０のベース部２６の外周に流れ込むと共に、外周ブロック部３１と内周筒部３２の間のスペースに流れ込む。光トランシーバ２０のベース部２６の外周に滞留した溶融樹脂によって光トランシーバ固定壁７が成形され、外周ブロック部３１と内周筒部３２の間のスペースに滞留した溶融樹脂によって筒状の光ファイバ位置決め部６が成形される。   At the time of injecting the resin into the mold 30, the molten resin flows into the outer periphery of the base portion 26 of the optical transceiver 20 as indicated by an arrow in FIG. 3A, and the outer peripheral block portion 31 and the inner peripheral cylindrical portion 32. Flows into the space between. The optical transceiver fixing wall 7 is formed by the molten resin staying at the outer periphery of the base portion 26 of the optical transceiver 20, and the cylindrical optical fiber is positioned by the molten resin staying in the space between the outer peripheral block portion 31 and the inner peripheral cylindrical portion 32. Part 6 is molded.

以上、説明したように光トランシーバ２０の突出部２７の根本箇所は、ベース部２６の上面に対し垂直なストレート側壁面２７ａに形成されている。従って、光トランシーバ２０をインサート成形の内部部品としてコネクタハウジング２を作製する際に、金型の内周筒部３２が光トランシーバ２０の突出部２７の外周に挿入され、内周筒部３２の最終的な挿入位置では、内周筒部３２が突出部２７のストレート側壁面２７ａにガイドされ、内周筒部３２の先端面３２ａが光トランシーバ２０のベース部２６の上面で、且つ、突出部２７との境界に突き当たる位置まで挿入される。そのため、光トランシーバ２０の突出部２７に対し金型３０の内周筒部３２が相対的に傾斜不能で、且つ、光トランシーバ２０の突出部２７の軸方向（集光レンズ１０の光軸）Ｃ１と内周筒部３２の軸方向（光ファイバの光軸）Ｃ２が一致した状態で位置決めされる。これにより、集光レンズ１０の光軸Ｃ１と光ファイバの光軸Ｃ２を精度良く一致する光コネクタ１を提供できる。   As described above, the root portion of the protruding portion 27 of the optical transceiver 20 is formed on the straight side wall surface 27 a perpendicular to the upper surface of the base portion 26. Accordingly, when the connector housing 2 is manufactured using the optical transceiver 20 as an insert molded internal component, the inner peripheral cylindrical portion 32 of the mold is inserted into the outer periphery of the protruding portion 27 of the optical transceiver 20, and the final inner peripheral cylindrical portion 32 is formed. In a typical insertion position, the inner peripheral cylindrical portion 32 is guided by the straight side wall surface 27 a of the protruding portion 27, the distal end surface 32 a of the inner peripheral cylindrical portion 32 is the upper surface of the base portion 26 of the optical transceiver 20, and the protruding portion 27. Is inserted until it hits the boundary. Therefore, the inner peripheral cylindrical portion 32 of the mold 30 cannot be inclined relative to the protruding portion 27 of the optical transceiver 20, and the axial direction of the protruding portion 27 of the optical transceiver 20 (the optical axis of the condensing lens 10) C1. And the axial direction (optical axis of the optical fiber) C2 of the inner peripheral cylindrical portion 32 are aligned. Accordingly, it is possible to provide the optical connector 1 in which the optical axis C1 of the condensing lens 10 and the optical axis C2 of the optical fiber coincide with each other with high accuracy.

又、二次樹脂成形の金型密閉状態では、内周筒部３２の内面と突出部２７の側壁面の間は、突出部２７のストレート側壁面２７ａの全領域で面接触するので、溶融樹脂が内周筒部３２の内側（集光レンズ１０が配置された側）に流れ込むのを確実に防止できる。   Further, in the sealed state of the mold of the secondary resin molding, since the inner surface of the inner peripheral cylindrical portion 32 and the side wall surface of the protruding portion 27 are in surface contact with the entire area of the straight side wall surface 27a of the protruding portion 27, the molten resin Can be reliably prevented from flowing into the inner peripheral cylinder portion 32 (the side where the condenser lens 10 is disposed).

突出部２７のストレート側壁面２７ａより先端箇所は、先端に向かうに従って縮径されたテーパ側壁面２７ｂに形成されている。従って、光トランシーバ２０をインサート成形の内部部品としてコネクタハウジング２を作製する際に、金型３０の内周筒部３２が光トランシーバ２０の突出部２７の外周にガイドされつつスムーズに挿入される。   A tip portion of the protruding portion 27 from the straight side wall surface 27a is formed on a tapered side wall surface 27b having a diameter reduced toward the tip. Therefore, when the connector housing 2 is manufactured using the optical transceiver 20 as an internal part for insert molding, the inner peripheral cylindrical portion 32 of the mold 30 is smoothly inserted while being guided by the outer periphery of the protruding portion 27 of the optical transceiver 20.

この実施形態では、光通信素子が光トランシーバ２０であり、二次樹脂成形部がコネクタハウジング２であり、最終的に光コネクタ１を作製したが、光コネクタ以外の部品を作製する場合にも本発明を同様に適用できることはもちろんである。   In this embodiment, the optical communication element is the optical transceiver 20, the secondary resin molding part is the connector housing 2, and the optical connector 1 is finally manufactured. Of course, the invention is equally applicable.

尚、前記実施形態では、光電変換素子２３は、発光素子と受光素子であるが、受発光素子であっても良い。   In the embodiment, the photoelectric conversion element 23 is a light emitting element and a light receiving element, but may be a light receiving and emitting element.

１ 光コネクタ
２ コネクタハウジング（二次樹脂成形部）
６ 光ファイバ位置決め部
７ 光ファイバ固定壁（素子固定部）
１０ 集光レンズ
２０ 光トランシーバ（光通信素子）
２６ ベース部
２７ 突出部
２７ａ ストレート側壁面
２７ｂ テーパ側壁面
３０ 金型
３２ 内周筒部 1 Optical connector 2 Connector housing (secondary resin molding part)
6 Optical fiber positioning part 7 Optical fiber fixing wall (element fixing part)
10 condensing lens 20 optical transceiver (optical communication device)
26 Base part 27 Projection part 27a Straight side wall surface 27b Tapered side wall surface 30 Mold 32 Inner peripheral cylinder part

Claims (5)

ベース部に突出部が突出され、前記突出部の上端に集光レンズを有する光通信素子と、
前記光通信素子を固定する素子固定部と、前記突出部の周囲に筒状に突設され、挿入される光ファイバの位置決めを行う光ファイバ位置決め部とを有する二次樹脂成形部とを備え、
前記突出部の根本箇所は、前記ベース部の上面に対し垂直なストレート側壁面であり、
前記突出部の外周と前記光ファイバ位置決め部の内周の間には、金型が挿入される金型挿入スペースが設けられ、
前記金型挿入スペースに挿入された前記金型が前記ストレート側壁面の外周面に対し相対的に傾斜不能とされ、前記集光レンズの光軸と前記光ファイバの光軸が一致されたことを特徴とする光通信部品。 An optical communication element having a protruding portion protruding from the base portion and having a condenser lens at the upper end of the protruding portion;
A secondary resin molding part having an element fixing part that fixes the optical communication element, and an optical fiber positioning part that projects in a cylindrical shape around the protruding part and positions an optical fiber to be inserted;
The base portion of the protruding portion is a straight side wall surface perpendicular to the upper surface of the base portion,
Between the outer periphery of the protruding portion and the inner periphery of the optical fiber positioning portion, a mold insertion space into which a mold is inserted is provided,
The mold inserted into the mold insertion space cannot be inclined relative to the outer peripheral surface of the straight side wall surface, and the optical axis of the condenser lens and the optical axis of the optical fiber are matched. Features optical communication components. 請求項１記載の光通信部品であって、
前記突出部の前記ストレート側壁面より先端箇所は、先端に向かうに従って縮径されたテーパ側壁面であることを特徴とする光通信部品。 The optical communication component according to claim 1,
An optical communication component characterized in that a tip portion of the protruding portion from the straight side wall surface is a tapered side wall surface having a diameter reduced toward the tip. 請求項１又は請求項２に記載の光通信部品であって、
前記二次樹脂成形部は、コネクタハウジングであることを特徴とする光通信部品。 The optical communication component according to claim 1 or 2,
The optical communication component, wherein the secondary resin molding part is a connector housing. ベース部に突出部が突出され、前記突出部の根本箇所が前記ベース部の上面に対し垂直なストレート側壁面であり、且つ、前記記突出部の上端に集光レンズを有する光通信素子を作製し、前記光通信素子をインサート成形の内部部品として、前記光通信素子を固定する素子固定部と、前記突出部の周囲に筒状に突設され、挿入される光ファイバの位置決めを行う光ファイバ位置決め部とを有する二次樹脂成形部を作製する光通信部品の製造方法であって、
前記二次樹脂成形部を作製する成形過程では、金型の内周筒部が前記突出部の外周にガイドされつつ挿入され、内周筒部の最終的な挿入位置では、内周筒部が突出部のストレート側壁面にガイドされた状態で樹脂の射出成形を行うことを特徴とする光通信部品の製造方法。 An optical communication element having a protruding portion protruding from a base portion, a root portion of the protruding portion being a straight side wall surface perpendicular to the upper surface of the base portion, and a condensing lens at the upper end of the protruding portion is manufactured. The optical communication element is used as an internal part for insert molding, and an element fixing portion for fixing the optical communication element, and an optical fiber that projects in a cylindrical shape around the protrusion and positions the inserted optical fiber A method of manufacturing an optical communication component for producing a secondary resin molded part having a positioning part,
In the molding process of producing the secondary resin molded part, the inner peripheral cylindrical part of the mold is inserted while being guided by the outer periphery of the protruding part, and the inner peripheral cylindrical part is inserted at the final insertion position of the inner peripheral cylindrical part. A method for producing an optical communication component, comprising performing injection molding of a resin while being guided by a straight side wall surface of a protruding portion. 請求項４記載の光通信部品の製造方法であって、
前記突出部の前記ストレート側壁面より先端箇所は、先端に向かうに従って縮径されたテーパ側壁面であることを特徴とする光通信部品の製造方法。 A method of manufacturing an optical communication component according to claim 4,
The method of manufacturing an optical communication component, wherein a tip portion of the protruding portion from the straight side wall surface is a tapered side wall surface having a diameter reduced toward the tip.
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