JP2005217228A - Optical transmission module - Google Patents

Optical transmission module Download PDF

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Publication number
JP2005217228A
JP2005217228A JP2004022643A JP2004022643A JP2005217228A JP 2005217228 A JP2005217228 A JP 2005217228A JP 2004022643 A JP2004022643 A JP 2004022643A JP 2004022643 A JP2004022643 A JP 2004022643A JP 2005217228 A JP2005217228 A JP 2005217228A
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Japan
Prior art keywords
guide pin
optical transmission
bottom case
printed circuit
circuit board
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JP2004022643A
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Japanese (ja)
Inventor
Norimichi Shibuya
典道 渋谷
Keiichi Murakami
恵一 村上
Kazutaka Nagoya
和孝 名古屋
Daisuke Murakami
大介 村上
Yoshikuni Uchida
佳邦 内田
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Opnext Japan Inc
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Opnext Japan Inc
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Priority to JP2004022643A priority Critical patent/JP2005217228A/en
Publication of JP2005217228A publication Critical patent/JP2005217228A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To easily improve the alignment accuracy of a bottom case and a printed board without requiring strict dimensional tolerances of a guide pin and an alignment hole. <P>SOLUTION: The guide pin 16 provided on a bottom case 13 is inserted into the alignment hole 17 provided in the printed board 11 on which optical transmission components are mounted. In this state, the printed board 11 is held for fixation thereof between a top case 12 and the bottom case 13. A difference is set to a specified distance between the center position of a fixing hole 18 provided outside the bottom case located at a first predetermined distance from the guide pin and the center position of a connector 19 fixed to the printed board located at a second predetermined distance from the guide pin. The guide pin 16 is assumed to be a columnar guide pin, and the alignment hole 17 into which the columnar guide pin 16 is inserted is assumed to be a circular hole in contact with an outer shape of the columnar guide pin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、光通信，光ＬＡＮ，光Ｉ／Ｆ等の分野で用いられる光伝送装置の光伝送装置用プリント基板に取付けるための光伝送モジュールの構造に関する。   The present invention relates to a structure of an optical transmission module for mounting on a printed circuit board for an optical transmission device of an optical transmission device used in the fields of optical communication, optical LAN, optical I / F, and the like.

光伝送モジュールの構造を、図１をかりて説明すると、光伝送モジュール１０は、図示していない光伝送用部品を実装したプリント基板１１をトップケース１２とボトムケース１３で挟んで固定してなる。固定の具体例として図１においては、プリント基板１１をネジ１４でトップケース１２に固定し、ボトムケース１３をプリント基板１１に当ててネジ１５でプリント基板１１の穴を介してトップケース１２に固定する。   The structure of the optical transmission module will be described with reference to FIG. 1. The optical transmission module 10 is formed by sandwiching a printed board 11 on which an optical transmission component (not shown) is mounted between a top case 12 and a bottom case 13. . As a specific example of fixing, in FIG. 1, the printed circuit board 11 is fixed to the top case 12 with screws 14, and the bottom case 13 is applied to the printed circuit board 11 and fixed to the top case 12 with screws 15 through the holes of the printed circuit board 11. To do.

その際ボトムケース１３に設けたガイドピン１６をプリント基板１１に設けた位置合わせ穴１７に挿入してプリント基板１１の位置決めをし、ガイドピン１６の中心位置から第１の所定距離Ａにあるところのボトムケース１３の外側に設けた固定用穴１８の中央位置と、ガイドピン１６から第２の所定距離Ｂにあるところのプリント基板１１に固定したコネクタ１９の中心位置との差を、規定の距離Ｃに設定している。   At this time, the guide pin 16 provided on the bottom case 13 is inserted into the alignment hole 17 provided on the printed board 11 to position the printed board 11, and is located at a first predetermined distance A from the center position of the guide pin 16. The difference between the center position of the fixing hole 18 provided on the outside of the bottom case 13 and the center position of the connector 19 fixed to the printed board 11 at the second predetermined distance B from the guide pin 16 is defined as follows. The distance C is set.

この光伝送モジュール１０を組み込む光伝送装置用プリント基板２０は、図２に示すように、上記光伝送モジュール１０のプリント基板１１に固定したコネクタ１９と嵌合するためのコネクタ２１と、上記光伝送モジュール１０のボトムケース１３の外側に設けた固定用穴１８に固定するための取付ネジ２２を備えており、コネクタ２１の中心位置と取付ネジ２２の中心位置との間が前記規定の距離Ｃに設定している。   As shown in FIG. 2, a printed circuit board 20 for an optical transmission device incorporating the optical transmission module 10 includes a connector 21 for fitting with a connector 19 fixed to the printed circuit board 11 of the optical transmission module 10, and the optical transmission. A mounting screw 22 for fixing to a fixing hole 18 provided outside the bottom case 13 of the module 10 is provided, and the distance between the center position of the connector 21 and the center position of the mounting screw 22 is the prescribed distance C. It is set.

光伝送モジュール１０を光伝送装置用プリント基板２０に組み込んだ光伝送装置とするには、図３に示すように、光伝送モジュール１０側のコネクタ１９と光伝送装置用プリント基板２０のコネクタ２１を嵌合し、取付ネジ２２を光伝送モジュール１０側の固定用穴１８に固定することで、光伝送装置が完成する。   In order to make the optical transmission module 10 incorporated in the printed circuit board 20 for the optical transmission device, as shown in FIG. 3, the connector 19 on the optical transmission module 10 side and the connector 21 of the printed circuit board 20 for the optical transmission device are provided. The optical transmission device is completed by fitting and fixing the mounting screw 22 in the fixing hole 18 on the optical transmission module 10 side.

図５は図１のＤ−Ｄ線における断面平面図であるが、従来の光伝送モジュール１０におけるボトムケース１３に設けたガイドピン１６とプリント基板１１に設けた位置合わせ穴１７の形状を示す図である（文献公知発明に係るものではない）。   FIG. 5 is a cross-sectional plan view taken along the line DD in FIG. 1, and shows the shape of the guide pin 16 provided in the bottom case 13 and the alignment hole 17 provided in the printed circuit board 11 in the conventional optical transmission module 10. (It does not relate to a known literature invention).

従来のボトムケース１３に設けたガイドピン１６は図５に示すように角状のガイドピン１６Ａであり、それに合わせてプリント基板１１に設けた位置合わせ穴１７も角状の位置合わせ穴１７Ａとなっている。   As shown in FIG. 5, the guide pin 16 provided in the conventional bottom case 13 is a square guide pin 16A, and the alignment hole 17 provided in the printed circuit board 11 is also a square alignment hole 17A. ing.

なお二つのプリント基板のコネクタ同士を嵌合するために案内用ガイドレールを用いたプリント基板案内構造は例えば特許文献１で知られている。   A printed circuit board guide structure using a guide rail for guiding the connectors of two printed circuit boards is known, for example, in Patent Document 1.

特開２００３−２４９７７７号公報JP 2003-249777 A

上記のように、従来は、ボトムケース１３に設けた角状のガイドピン１６Ａを、プリント基板１１に設けた角状の位置合わせ穴１７Ａに挿入してプリント基板１１の位置決めをしている。そのために、角状のガイドピン１６Ａと角状の位置合わせ穴１７Ａの間の寸法公差によるがたつきを極力抑える必要があり、角状のガイドピン１６Ａと角状の位置合わせ穴１７Ａに厳しい交差が要求され、かつそれでいてボトムケース１３とプリント基板１１の位置合わせ精度をより向上させることが困難であった。   As described above, conventionally, the rectangular guide pins 16A provided in the bottom case 13 are inserted into the rectangular alignment holes 17A provided in the printed board 11 to position the printed board 11. Therefore, it is necessary to suppress rattling due to dimensional tolerance between the square guide pin 16A and the square alignment hole 17A as much as possible, and the square guide pin 16A and the square alignment hole 17A are severely crossed. However, it has been difficult to further improve the alignment accuracy of the bottom case 13 and the printed circuit board 11.

本発明の目的は、ガイドピンと位置合わせ穴に厳しい交差を必要とすることなくかつボトムケースとプリント基板の位置合わせ精度を容易に向上させることが可能な光伝送モジュールを提供することにある。   An object of the present invention is to provide an optical transmission module that can easily improve the alignment accuracy of a bottom case and a printed circuit board without requiring a strict intersection between a guide pin and an alignment hole.

上記目的を達成するため、本発明は、光伝送用部品を実装したプリント基板に設けた位置合わせ穴に、ボトムケースに設けたガイドピンを挿入させた状態で前記プリント基板をトップケースと前記ボトムケースで挟んで固定し、前記ガイドピンから第１の所定距離にあるところの前記ボトムケースの外側に設けた固定用穴の中心位置と、前記ガイドピンから第２の所定距離にあるところの前記プリント基板に固定したコネクタの中心位置との差を、規定の距離に設定してなる光伝送モジュールであって、前記ガイドピンを円柱状のガイドピンとし、該円柱状のガイドピンが挿入される前記位置合わせ穴を前記円柱状のガイドピンの外形と接触する円形の穴としたことを特徴とする。   In order to achieve the above-described object, the present invention provides a printed circuit board that is mounted in a positioning hole provided in a printed circuit board on which an optical transmission component is mounted, with a guide pin provided in the bottom case inserted therein. A center position of a fixing hole provided outside the bottom case at a first predetermined distance from the guide pin, and a position at a second predetermined distance from the guide pin. An optical transmission module in which a difference from a center position of a connector fixed to a printed circuit board is set to a specified distance, wherein the guide pin is a cylindrical guide pin, and the cylindrical guide pin is inserted The alignment hole is a circular hole that comes into contact with the outer shape of the cylindrical guide pin.

本発明によれば、ガイドピンと位置合わせ穴に厳しい交差を必要とすることなくボトムケースとプリント基板の位置合わせ精度を容易に向上させることが可能な光伝送モジュールを得ることができる。   According to the present invention, it is possible to obtain an optical transmission module that can easily improve the alignment accuracy of the bottom case and the printed circuit board without requiring a strict intersection between the guide pin and the alignment hole.

図１は、本発明に係る光伝送モジュールの実施の形態を示す断面側面図である。   FIG. 1 is a sectional side view showing an embodiment of an optical transmission module according to the present invention.

光伝送モジュール１０は、図示していない光伝送用部品を実装したプリント基板１１をトップケース１２とボトムケース１３で挟んで固定してなる。固定の具体例として図１においては、プリント基板１１をネジ１４でトップケース１２に固定し、ボトムケース１３をプリント基板１１に当ててネジ１５でプリント基板１１の穴を介してトップケース１２に固定する。   The optical transmission module 10 is formed by fixing a printed circuit board 11 on which optical transmission components (not shown) are mounted between a top case 12 and a bottom case 13. As a specific example of fixing, in FIG. 1, the printed circuit board 11 is fixed to the top case 12 with screws 14, the bottom case 13 is applied to the printed circuit board 11, and fixed to the top case 12 with screws 15 through the holes of the printed circuit board 11. To do.

その際ボトムケース１３に設けたガイドピン１６をプリント基板１１に設けた位置合わせ穴１７に挿入してプリント基板１１の位置決めをし、ガイドピン１６の中心位置から第１の所定距離Ａにあるところのボトムケース１３の外側に設けた固定用穴１８の中央位置と、ガイドピン１６から第２の所定距離Ｂにあるところのプリント基板１１に固定したコネクタ１９の中心位置との差を、規定の距離Ｃに設定している。   At this time, the guide pin 16 provided on the bottom case 13 is inserted into the alignment hole 17 provided on the printed board 11 to position the printed board 11, and is located at a first predetermined distance A from the center position of the guide pin 16. The difference between the center position of the fixing hole 18 provided on the outside of the bottom case 13 and the center position of the connector 19 fixed to the printed board 11 at the second predetermined distance B from the guide pin 16 is defined as follows. The distance C is set.

図２は、図１の本発明に係る光伝送モジュールの実施の形態を組み込むための光伝送装置用プリント基板を示す断面側面図である。   FIG. 2 is a cross-sectional side view showing a printed circuit board for an optical transmission apparatus for incorporating the embodiment of the optical transmission module according to the present invention of FIG.

光伝送モジュール１０を組み込む光伝送装置用プリント基板２０は、上記光伝送モジュール１０のプリント基板１１に固定したコネクタ１９と嵌合するためのコネクタ２１と、上記光伝送モジュール１０のボトムケース１３の外側に設けた固定用穴１８に固定するための取付ネジ２２を備えており、コネクタ２１の中心位置と取付ネジ２２の中心位置との間が前記規定の距離Ｃに設定している。   The optical transmission device printed circuit board 20 incorporating the optical transmission module 10 includes a connector 21 for fitting with a connector 19 fixed to the printed circuit board 11 of the optical transmission module 10, and an outer side of the bottom case 13 of the optical transmission module 10. An attachment screw 22 is provided for fixing to the fixing hole 18 provided in the connector, and the distance between the center position of the connector 21 and the center position of the attachment screw 22 is set to the prescribed distance C.

図３は、図１の本発明に係る光伝送モジュールの実施の形態を、図２の光伝送装置用プリント基板に組み込んだときの光伝送装置を示す断面側面図である。   3 is a cross-sectional side view showing the optical transmission device when the embodiment of the optical transmission module according to the present invention of FIG. 1 is incorporated in the printed circuit board for the optical transmission device of FIG.

光伝送モジュール１０を光伝送装置用プリント基板２０に組み込んだ光伝送装置とするには、光伝送モジュール１０側のコネクタ１９と光伝送装置用プリント基板２０のコネクタ２１を嵌合し、取付ネジ２２を光伝送モジュール１０側の固定用穴１８に固定することで、光伝送装置が完成する。   In order to make the optical transmission module 10 into the optical transmission device printed circuit board 20, the connector 19 on the optical transmission module 10 side and the connector 21 of the optical transmission device printed circuit board 20 are fitted, and the mounting screw 22 Is fixed in the fixing hole 18 on the optical transmission module 10 side, thereby completing the optical transmission device.

図４は、図１のＤ−Ｄ線における断面平面図で、本発明に係る光伝送モジュールの実施の形態のボトムケースに設けたガイドピンとプリント基板に設けた位置合わせ穴の形状を示す図である。   FIG. 4 is a cross-sectional plan view taken along the line D-D in FIG. 1 and shows the shape of the alignment pins provided in the printed circuit board and the guide pins provided in the bottom case of the embodiment of the optical transmission module according to the present invention. is there.

本発明は、光伝送モジュール１０におけるボトムケース１３に設けたガイドピン１６を円柱状のガイドピン１６Ｂとし、円柱状のガイドピン１６Ｂが挿入されるところのプリント基板１１に設けた位置合わせ穴１７を、円柱状のガイドピン１６Ｂの外形と接触する円形の穴１７Ｂとしたことにある。   In the present invention, the guide pin 16 provided in the bottom case 13 of the optical transmission module 10 is a cylindrical guide pin 16B, and the alignment hole 17 provided in the printed board 11 where the cylindrical guide pin 16B is inserted is provided. The circular hole 17B is in contact with the outer shape of the cylindrical guide pin 16B.

ボトムケース１３に設けたガイドピン１６を円柱状のガイドピン１６Ｂとした本発明では、プリント基板１１に設けた円形の位置合わせ穴１７Ｂとのがたつきを吸収できるため、ガイドピン１６Ｂと位置合わせ穴１７Ｂに厳しい交差を必要とすることがなく、かつボトムケース１３とプリント基板１１の位置合わせ精度を容易に向上させることができる。また本発明では単なる形状の変更しかも単純な形状への変更ですむので、便利である。   In the present invention in which the guide pin 16 provided on the bottom case 13 is a cylindrical guide pin 16B, rattling with the circular alignment hole 17B provided on the printed circuit board 11 can be absorbed. It is possible to easily improve the alignment accuracy between the bottom case 13 and the printed circuit board 11 without requiring a strict intersection in the hole 17B. Further, the present invention is convenient because it is only necessary to change the shape to a simple shape.

本発明に係る光伝送モジュールの実施の形態を示す断面側面図である。It is a section side view showing an embodiment of an optical transmission module concerning the present invention. 図１の本発明に係る光伝送モジュールの実施の形態を組み込むための光伝送装置用プリント基板を示す断面側面図である。It is a cross-sectional side view which shows the printed circuit board for optical transmission apparatuses for incorporating embodiment of the optical transmission module which concerns on this invention of FIG. 図１の本発明に係る光伝送モジュールの実施の形態を、図２の光伝送装置用プリント基板に組み込んだときの光伝送装置を示す断面側面図である。FIG. 3 is a cross-sectional side view showing the optical transmission device when the embodiment of the optical transmission module according to the present invention of FIG. 1 is incorporated into the printed circuit board for the optical transmission device of FIG. 2. 図１のＤ−Ｄ線における断面平面図で、本発明に係る光伝送モジュールの実施の形態のボトムケースに設けたガイドピンとプリント基板に設けた位置合わせ穴の形状を示す図である。FIG. 2 is a cross-sectional plan view taken along the line D-D in FIG. 1, illustrating a shape of a guide pin provided in a bottom case and an alignment hole provided in a printed board in an embodiment of the optical transmission module according to the present invention. 図１のＤ−Ｄ線における断面平面図であるが、従来の光伝送モジュールにおけるボトムケースに設けたガイドピンとプリント基板に設けた位置合わせ穴の形状を示す図である。FIG. 2 is a cross-sectional plan view taken along the line DD in FIG. 1, illustrating a shape of a guide pin provided in a bottom case and an alignment hole provided in a printed board in a conventional optical transmission module.

符号の説明Explanation of symbols

１０…光伝送モジュール、１１…プリント基板、１２…トップケース、１３…ボトムケース、１４，１５…ネジ、１６…ガイドピン、１７…位置合わせ穴、１８…固定用穴、１９…コネクタ、２０…光伝送装置用プリント基板、２１…コネクタ、２２…取付ネジ。
DESCRIPTION OF SYMBOLS 10 ... Optical transmission module, 11 ... Printed circuit board, 12 ... Top case, 13 ... Bottom case, 14, 15 ... Screw, 16 ... Guide pin, 17 ... Positioning hole, 18 ... Fixing hole, 19 ... Connector, 20 ... Printed circuit board for optical transmission device, 21... Connector, 22.

Claims (1)

光伝送用部品を実装したプリント基板に設けた位置合わせ穴に、ボトムケースに設けたガイドピンを挿入させた状態で前記プリント基板をトップケースと前記ボトムケースで挟んで固定し、前記ガイドピンから第１の所定距離にあるところの前記ボトムケースの外側に設けた固定用穴の中心位置と、前記ガイドピンから第２の所定距離にあるところの前記プリント基板に固定したコネクタの中心位置との差を、規定の距離に設定してなる光伝送モジュールであって、前記ガイドピンを円柱状のガイドピンとし、該円柱状のガイドピンが挿入される前記位置合わせ穴を前記円柱状のガイドピンの外形と接触する円形の穴としたことを特徴とする光伝送モジュール。
The printed circuit board is sandwiched and fixed between the top case and the bottom case with the guide pin provided in the bottom case inserted into the alignment hole provided in the printed circuit board on which the optical transmission component is mounted. A center position of a fixing hole provided outside the bottom case at a first predetermined distance and a center position of a connector fixed to the printed circuit board at a second predetermined distance from the guide pin. An optical transmission module in which a difference is set to a specified distance, wherein the guide pin is a cylindrical guide pin, and the alignment hole into which the cylindrical guide pin is inserted is the cylindrical guide pin An optical transmission module characterized in that it is a circular hole that comes into contact with the external shape.
JP2004022643A 2004-01-30 2004-01-30 Optical transmission module Pending JP2005217228A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081667A (en) * 2009-10-08 2011-04-21 Fujitsu Ltd Electronic apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011081667A (en) * 2009-10-08 2011-04-21 Fujitsu Ltd Electronic apparatus

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