JP2020145839A

JP2020145839A - Connection structure of optical component unit

Info

Publication number: JP2020145839A
Application number: JP2019040613A
Authority: JP
Inventors: 工藤　剛通; Takemichi Kudo; 剛通工藤; 貴士松永; Takashi Matsunaga; 哲広鶴田; Akihiro Tsuruta; 貴洋杉山; Takahiro Sugiyama
Original assignee: Yazaki Corp
Current assignee: Yazaki Corp
Priority date: 2019-03-06
Filing date: 2019-03-06
Publication date: 2020-09-10

Abstract

To provide a connection structure of an optical component unit which can suppress intrusion of water to the optical component unit.SOLUTION: This connection structure comprises: an optical component unit having an optical component 7, a unit body 4 which accommodates the optical component 7, and a unit cover 9; and a conductor 10. The unit body 4 has: an opening 23 which inserts the conductor 10 from the outside into the inside; and a pair of fit-in recesses 91 which are provided on an inner peripheral wall surface of the opening 23. A pair of holding members 80 are assembled to the conductor 10 to cover its outer periphery. The unit body 4 or the unit cover 9 has a through hole 29 at a position corresponding to the opening 23. The unit cover 9 is assembled to the unit body 4 in a state in which the pair of holding members 80 are fitted into the pair of fit-in recesses 91, water sealant S is poured into an area 84 to be sandwiched between the pair of holding members 80 through the through hole 29, and the opening 23 is sealed.SELECTED DRAWING: Figure 6

Description

本発明は、光学部品ユニットの接続構造に関する。 The present invention relates to a connection structure of an optical component unit.

従来から、光学部品などを収容するとともに光学部品に繋がる電線を内部から外部に引き出す開口部を有する光学部品ユニットと、この光学部品ユニットに電力を供給するための導電体と、の接続構造が提案されている。ところで、光学部品ユニットとは異なるものの、箱状のユニットに設けた開口部から導電体を引き出す構造は、例えば、自動車などの車両に搭載される電気接続箱に用いられる場合がある（例えば、特許文献１を参照）。 Conventionally, a connection structure has been proposed between an optical component unit having an opening for accommodating an optical component and pulling an electric wire connected to the optical component from the inside to the outside, and a conductor for supplying electric power to the optical component unit. Has been done. By the way, although different from the optical component unit, a structure for pulling out a conductor from an opening provided in a box-shaped unit may be used, for example, in an electric connection box mounted on a vehicle such as an automobile (for example, a patent). See Document 1).

特開２００８−１０４２５５号公報Japanese Unexamined Patent Publication No. 2008-104255

上述した従来の電気接続箱の構造では、箱状のユニットに設けた開口部を通じて外部から内部に水が侵入する場合がある。このような水の侵入は、光学部品ユニットにおいても抑制されることが望ましい。 In the conventional electrical connection box structure described above, water may enter from the outside to the inside through an opening provided in the box-shaped unit. It is desirable that such intrusion of water is also suppressed in the optical component unit.

本発明は、上述した事情に鑑みてなされたものであり、その目的は、光学部品ユニットへの水の侵入を抑制可能な光学部品ユニットの接続構造、を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a connection structure of an optical component unit capable of suppressing water from entering the optical component unit.

前述した目的を達成するために、本発明に係る光学部品ユニットの接続構造は、下記［１］〜［５］を特徴としている。
［１］
光学部品、前記光学部品を収容するユニット本体、及び、前記ユニット本体に組み付けられるユニットカバーを有する光学部品ユニットと、導電体と、を備える、光学部品ユニットの接続構造であって、
前記ユニット本体は、
前記導電体を外部から内部に挿通する開口部と、前記開口部の内周壁面に設けられる一対の嵌入凹部と、を有し、
前記導電体は、
当該導電体の外周を覆うように当該導電体に組み付けられる一対の保持部材を有し、
前記ユニット本体又は前記ユニットカバーは、
前記開口部に対応する位置に開口した貫通孔を有し、
当該接続構造は、
前記開口部において、前記一対の前記保持部材が前記一対の前記嵌入凹部に嵌め込まれた状態にて前記ユニット本体に前記ユニットカバーが組み付けられ、前記貫通孔を通じて前記一対の前記保持部材に挟まれる領域に止水剤が注入され、前記開口部が封止される、ように構成される、
光学部品ユニットの接続構造であること。
［２］
上記［１］に記載の接続構造において、
前記ユニット本体は、
前記光学部品の収容空間を取り囲む壁部と、前記壁部と前記ユニットカバーとの接触箇所に設けられ且つ前記開口部に連通する溝部と、を更に有し、
当該接続構造は、
前記領域に注入された前記止水剤が前記溝部に流入し、前記接触箇所が封止される、ように構成される、
光学部品ユニットの接続構造であること。
［３］
上記［１］又は上記［２］に記載の接続構造において、
前記保持部材は、
前記嵌入凹部に向けて突出する突部を有し、前記突部を用いて前記嵌入凹部に圧入される、
光学部品ユニットの接続構造であること。
［４］
上記［１］〜上記［３］の何れか一つに記載の接続構造において、
前記保持部材と前記嵌入凹部との間、及び、前記保持部材と前記ユニットカバーとの間の少なくとも一方が、凹凸嵌め合い構造を有する、
光学部品ユニットの接続構造であること。
［５］
上記［１］又は上記［２］に記載の接続構造において、
前記保持部材は、
弾性材料から構成されるとともに前記嵌入凹部に向けて突出する突条部を有し、前記突条部を前記嵌入凹部に押し付ける、ように構成される、
光学部品ユニットの接続構造であること。 In order to achieve the above-mentioned object, the connection structure of the optical component unit according to the present invention is characterized by the following [1] to [5].
[1]
An optical component unit connection structure comprising an optical component, a unit body for accommodating the optical component, an optical component unit having a unit cover assembled to the unit body, and a conductor.
The unit body
It has an opening through which the conductor is inserted from the outside to the inside, and a pair of fitting recesses provided on the inner peripheral wall surface of the opening.
The conductor is
It has a pair of holding members that are assembled to the conductor so as to cover the outer circumference of the conductor.
The unit body or the unit cover
It has a through hole opened at a position corresponding to the opening.
The connection structure is
In the opening, a region where the unit cover is assembled to the unit body in a state where the pair of holding members are fitted into the pair of fitting recesses and sandwiched between the pair of holding members through the through holes. Is configured to be injected with a water blocking agent and the opening is sealed.
The connection structure of the optical component unit.
[2]
In the connection structure described in [1] above,
The unit body
It further has a wall portion surrounding the accommodation space of the optical component, and a groove portion provided at a contact portion between the wall portion and the unit cover and communicating with the opening portion.
The connection structure is
The water blocking agent injected into the region flows into the groove portion, and the contact portion is sealed.
The connection structure of the optical component unit.
[3]
In the connection structure according to the above [1] or the above [2],
The holding member is
It has a protrusion that protrudes toward the fitting recess, and is press-fitted into the fitting recess using the protrusion.
The connection structure of the optical component unit.
[4]
In the connection structure according to any one of the above [1] to [3],
At least one of the holding member and the fitting recess and between the holding member and the unit cover has an uneven fitting structure.
The connection structure of the optical component unit.
[5]
In the connection structure according to the above [1] or the above [2],
The holding member is
It is made of an elastic material and has a ridge portion that protrudes toward the fitting recess, and is configured to press the ridge portion against the fitting recess.
The connection structure of the optical component unit.

上記［１］の構成の光学部品ユニットの接続構造は、ユニット本体に設けられた開口部に、導電体が挿通されるにあたり、導電体に組み付けられた一対の保持部材を開口部の一対の嵌入凹部に嵌め込み、ユニット本体にユニットカバーを組み付けた上で、ユニット本体又はユニットカバーの貫通孔を通じて止水剤が注入される。注入された止水剤は、一対の保持部材に挟まれる領域に広がる。これにより、開口部と導電体との間の隙間が、一対の保持部材および止水剤によって封止される。したがって、本構成の光学部品ユニットの接続構造は、光学部品ユニットと導電体との間を通じた光学部品ユニットへの水の侵入を抑制可能である。 In the connection structure of the optical component unit having the configuration of the above [1], when the conductor is inserted into the opening provided in the unit body, a pair of holding members assembled to the conductor are fitted into a pair of openings. After fitting into the recess and assembling the unit cover to the unit body, the water blocking agent is injected through the unit body or the through hole of the unit cover. The injected water blocking agent spreads over the area sandwiched between the pair of holding members. As a result, the gap between the opening and the conductor is sealed by the pair of holding members and the waterproofing agent. Therefore, the connection structure of the optical component unit having the present configuration can suppress the intrusion of water into the optical component unit through between the optical component unit and the conductor.

上記［２］の構成の光学部品ユニットの接続構造によれば、ユニット本体又はユニットカバーの貫通孔を通じて注入された止水剤は、一対の保持部材に挟まれた領域だけでなく、その領域に連通する溝部にも注入される。よって、開口部だけでなく、ユニット本体とユニットカバーとの接触箇所を通じた水の侵入を抑制できる。 According to the connection structure of the optical component unit having the configuration of [2] above, the water blocking agent injected through the through hole of the unit body or the unit cover is applied not only to the region sandwiched between the pair of holding members but also to that region. It is also injected into the groove that communicates. Therefore, it is possible to suppress the intrusion of water not only through the opening but also through the contact point between the unit body and the unit cover.

上記［３］の構成の光学部品ユニットの接続構造によれば、保持部材が有する突部を用いて保持部材が嵌入凹部に圧入される。よって、保持部材と嵌入凹部との間の止水性が高まり、光学部品ユニットと導電体との間を通じた水の侵入を更に強固に抑制可能できる。 According to the connection structure of the optical component unit having the configuration of the above [3], the holding member is press-fitted into the fitting recess by using the protrusion of the holding member. Therefore, the water blocking property between the holding member and the fitting recess is enhanced, and the intrusion of water through the optical component unit and the conductor can be suppressed more firmly.

上記［４］の構成の光学部品ユニットの接続構造によれば、保持部材と嵌入凹部との間（隙間）及び保持部材とユニットカバーとの間（隙間）の少なくとも一方が、凹凸嵌め合い構造を有する。よって、それら隙間がいわゆるラビリンス構造となり、それら隙間を止水剤が通過しようとするときの沿面距離が長くなる。その結果、止水剤を注入したときに、それら隙間を通じて光学部品ユニットの外部に止水剤が流れ出し難い。よって、光学部品ユニットの美観を損なうことなく、光学部品ユニットへの水の侵入を抑制できる。 According to the connection structure of the optical component unit having the configuration of [4] above, at least one of the space between the holding member and the fitting recess (gap) and the space between the holding member and the unit cover (gap) has an uneven fitting structure. Have. Therefore, the gaps have a so-called labyrinth structure, and the creepage distance when the water blocking agent tries to pass through the gaps becomes long. As a result, when the water blocking agent is injected, it is difficult for the water blocking agent to flow out to the outside of the optical component unit through the gaps. Therefore, it is possible to suppress the intrusion of water into the optical component unit without spoiling the aesthetic appearance of the optical component unit.

上記［５］の構成の光学部品ユニットの接続構造によれば、保持部材が弾性材料から構成され、保持部材の突条部が嵌入凹部に押し付けられる。これにより、保持部材と嵌入凹部との間の止水性が更に高まる。 According to the connection structure of the optical component unit having the configuration of [5] above, the holding member is made of an elastic material, and the ridge portion of the holding member is pressed against the fitting recess. As a result, the water blocking property between the holding member and the fitting recess is further enhanced.

本発明によれば、光学部品ユニットへの水の侵入を抑制可能な光学部品ユニットの接続構造を提供できる。 According to the present invention, it is possible to provide a connection structure of an optical component unit capable of suppressing the intrusion of water into the optical component unit.

以上、本発明について簡潔に説明した。更に、以下に説明される発明を実施するための形態（以下「実施形態」という。）を添付の図面を参照して通読することにより、本発明の詳細は更に明確化されるであろう。 The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through the embodiments for carrying out the invention described below (hereinafter referred to as "embodiments") with reference to the accompanying drawings.

図１は、本発明の実施形態に係る光学部品ユニットの接続構造を含む光コネクタの接続構造の斜視図である。FIG. 1 is a perspective view of a connection structure of an optical connector including a connection structure of an optical component unit according to an embodiment of the present invention. 図２は、図１に示した光コネクタの接続構造の分解斜視図である。FIG. 2 is an exploded perspective view of the connection structure of the optical connector shown in FIG. 図３（ａ）は、第２筐体の開口部に導電体が収容された状態にある第２筐体を前側から見た斜視図であり、図３（ｂ）は、その第２筐体をカバーを取り除いた状態で後側から見た斜視図である。FIG. 3A is a perspective view of the second housing in which the conductor is housed in the opening of the second housing as viewed from the front side, and FIG. 3B is the second housing. It is a perspective view seen from the rear side with the cover removed. 図４は、第２筐体の開口部に設けられた一対の嵌入凹部の周りを拡大して示す図である。FIG. 4 is an enlarged view of the circumference of a pair of fitting recesses provided in the opening of the second housing. 図５（ａ）は、導電体に保持部材を組み付ける前の状態を説明するための斜視図であり、図５（ｂ）は、導電体に保持部材を組み付けた状態を示す斜視図である。FIG. 5A is a perspective view for explaining a state before assembling the holding member to the conductor, and FIG. 5B is a perspective view showing a state in which the holding member is assembled to the conductor. 図６は、止水剤が充填された様子を説明するための図であり、図６（ａ）は、第２筐体をカバーを取り除いた状態で後側から見た斜視図であり、図６（ｂ）は、幅方向且つ前後方向に沿う断面図であり、図６（ｃ）は、上下方向且つ前後方向に沿う断面図である。FIG. 6 is a view for explaining how the water blocking agent is filled, and FIG. 6A is a perspective view of the second housing with the cover removed and viewed from the rear side. 6 (b) is a cross-sectional view taken along the width direction and the front-rear direction, and FIG. 6 (c) is a cross-sectional view taken along the up-down direction and the front-back direction. 図７（ａ）は、本発明の実施形態の変形例における図４に対応する図であり、図７（ｂ）は、その変形例における図５（ａ）に対応する図である。FIG. 7 (a) is a diagram corresponding to FIG. 4 in a modified example of the embodiment of the present invention, and FIG. 7 (b) is a diagram corresponding to FIG. 5 (a) in the modified example. 図８は、図７に示す変形例において止水剤が充填された様子を説明するための図であり、図８（ａ）は、幅方向且つ上下方向に沿う断面図であり、図８（ｂ）は、図８（ａ）のＡ部拡大図であり、図８（ｃ）は、幅方向且つ前後方向に沿う断面図であり、図８（ｄ）は、図８（ｃ）のＢ部拡大図である。FIG. 8 is a view for explaining a state in which the water blocking agent is filled in the modified example shown in FIG. 7, and FIG. 8 (a) is a cross-sectional view taken along the width direction and the vertical direction. b) is an enlarged view of part A of FIG. 8 (a), FIG. 8 (c) is a cross-sectional view taken along the width direction and the front-rear direction, and FIG. 8 (d) is B of FIG. 8 (c). It is an enlarged view of a part. 図９（ａ）は、本発明の実施形態の他の変形例に係る保持部材を示す斜視図であり、図９（ｂ）は、その変形例において止水剤が充填された様子を説明するための幅方向且つ前後方向に沿う断面図である。FIG. 9A is a perspective view showing a holding member according to another modification of the embodiment of the present invention, and FIG. 9B describes a state in which the water blocking agent is filled in the modification. It is a cross-sectional view along the width direction and the front-back direction for the purpose. 図１０（ａ）は、第２筐体の開口部において導電体に代えて閉塞壁が収容される変形例を示す斜視図であり、図１０（ｂ）は、その閉塞壁の斜視図である。FIG. 10 (a) is a perspective view showing a modified example in which the closed wall is accommodated in place of the conductor in the opening of the second housing, and FIG. 10 (b) is a perspective view of the closed wall. .. 図１１は、カバーに注入孔及び視認孔が設けられる変形例を示す斜視図である。FIG. 11 is a perspective view showing a modified example in which the cover is provided with an injection hole and a visual recognition hole.

＜実施形態＞
以下、図面を参照しながら、本発明の実施形態に係る光学部品ユニットの接続構造を含む光コネクタの接続構造について説明する。図１及び図２に示すように、本発明の実施形態に係る光コネクタの接続構造３は、回路基板（図示省略）に実装される第１光コネクタ１と、光ファイバ（図示省略）に繋がる第２光コネクタ２と、の接続構造である。図１に示すように、第１光コネクタ１と第２光コネクタ２とが嵌合されることで、第１光コネクタ１と、第２光コネクタ２に接続された光ファイバとが光通信可能とされる。 <Embodiment>
Hereinafter, the connection structure of the optical connector including the connection structure of the optical component unit according to the embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the optical connector connection structure 3 according to the embodiment of the present invention is connected to a first optical connector 1 mounted on a circuit board (not shown) and an optical fiber (not shown). It is a connection structure with the second optical connector 2. As shown in FIG. 1, by fitting the first optical connector 1 and the second optical connector 2, the first optical connector 1 and the optical fiber connected to the second optical connector 2 can perform optical communication. It is said that.

以下、説明の便宜上、図２に示すように、「前後方向」、「幅方向」、「上下方向」、「上」、及び「下」を定義する。「前後方向」、「幅方向」及び「上下方向」は、互いに直交している。前後方向は、第１光コネクタ１と第２光コネクタ２との嵌合方向と一致している。第１光コネクタ１及び第２光コネクタ２の各々について、相手側光コネクタが嵌合する嵌合方向正面側を前側とし、その反対の嵌合方向背面側を後側とする。以下、先ず、第１光コネクタ１について説明する。 Hereinafter, for convenience of explanation, as shown in FIG. 2, "front-back direction", "width direction", "vertical direction", "upper", and "lower" are defined. The "front-back direction", "width direction", and "vertical direction" are orthogonal to each other. The front-rear direction coincides with the mating direction of the first optical connector 1 and the second optical connector 2. For each of the first optical connector 1 and the second optical connector 2, the front side in the fitting direction in which the mating optical connector is fitted is the front side, and the back side in the opposite fitting direction is the rear side. Hereinafter, first, the first optical connector 1 will be described.

第１光コネクタ１は、図２に示すように、前後方向から見て略矩形状の樹脂製の第１筐体１１を有する。第１筐体１１は、樹脂製のレンズハウジング１２を支持している。レンズハウジング１２は、レンズ体、及び、光電変換モジュール（図示省略）を収容している。光電変換モジュールは、第１筐体１１に固定配置された回路基板に実装されている。レンズハウジング１２の前端部には、前方へ突出する筒状部１２ａが一体で設けられている。筒状部１２ａは、レンズ体の筒状部（図示省略）を同軸的に収容している。なお、図２では、説明の便宜上、導電体１０の図示を省略している。 As shown in FIG. 2, the first optical connector 1 has a first housing 11 made of a resin having a substantially rectangular shape when viewed from the front-rear direction. The first housing 11 supports a resin lens housing 12. The lens housing 12 houses a lens body and a photoelectric conversion module (not shown). The photoelectric conversion module is mounted on a circuit board fixedly arranged in the first housing 11. A tubular portion 12a projecting forward is integrally provided at the front end portion of the lens housing 12. The tubular portion 12a coaxially accommodates the tubular portion (not shown) of the lens body. In FIG. 2, the conductor 10 is not shown for convenience of explanation.

第１筐体１１の前面には、第２光コネクタ２の後述するアウタハウジング５が挿入されることになる矩形状の凹部１５を画成する嵌合凹部壁１６が設けられている。凹部１５は、前方に開口し且つ後方に向けて窪んでいる。凹部１５の内部にて、凹部１５の底面から、レンズハウジング１２の筒状部１２ａが露出し且つ前方に突出している。 A fitting recess wall 16 is provided on the front surface of the first housing 11 to define a rectangular recess 15 into which the outer housing 5 described later of the second optical connector 2 will be inserted. The recess 15 is open forward and recessed backward. Inside the recess 15, the tubular portion 12a of the lens housing 12 is exposed and projects forward from the bottom surface of the recess 15.

図２に示すように、第１筐体１１の前面には、凹部１５の上側に隣接して、電気コネクタ部１７が設けられている。電気コネクタ部１７は、回路基板と電気的に接続されており、且つ、第２光コネクタ２の後述する第２筐体４の開口部２３に収容される導電体１０（図１参照）と電気接続体（図示省略）によって電気的に接続されている。これにより、導電体１０から、電気接続体及び回路基板を介して、光電変換モジュールに電力が供給され得るようになっている。 As shown in FIG. 2, an electric connector portion 17 is provided on the front surface of the first housing 11 adjacent to the upper side of the recess 15. The electric connector portion 17 is electrically connected to the circuit board and is electrically connected to the conductor 10 (see FIG. 1) accommodated in the opening 23 of the second housing 4 described later of the second optical connector 2. It is electrically connected by a connector (not shown). As a result, electric power can be supplied from the conductor 10 to the photoelectric conversion module via the electric connector and the circuit board.

第１筐体１１の下面には、下方に突出するコネクタ部１８が設けられている。コネクタ部１８も、回路基板と電気的に接続されている。これにより、コネクタ部１８に電気的に接続された外部電子機器（図示省略）と回路基板との間で電気信号の送受信が可能となっている。 A connector portion 18 projecting downward is provided on the lower surface of the first housing 11. The connector portion 18 is also electrically connected to the circuit board. This makes it possible to transmit and receive electrical signals between an external electronic device (not shown) electrically connected to the connector portion 18 and a circuit board.

第１筐体１１の側面の複数箇所（本例では、４箇所）には、ロック部１９が設けられている。ロック部１９は、第１筐体１１及び第２筐体４の嵌合状態（第１、第２光コネクタ１，２の嵌合状態）において、第２筐体４の後述する被ロック部２８と係合することで、当該嵌合状態を維持可能となっている。以上、第１光コネクタ１について説明した。 Lock portions 19 are provided at a plurality of locations (4 locations in this example) on the side surface of the first housing 11. The lock portion 19 is a locked portion 28 of the second housing 4, which will be described later, in a fitted state of the first housing 11 and the second housing 4 (fitted state of the first and second optical connectors 1 and 2). By engaging with, the fitted state can be maintained. The first optical connector 1 has been described above.

次いで、第２光コネクタ２について説明する。第２光コネクタ２は、図２に示すように、第２筐体４と、第２筐体４に支持されるアウタハウジング５と、アウタハウジング５に収容されるインナハウジング６と、インナハウジング６に収容されるフェルール７と、アウタハウジング５の後端面に組み付けられるホルダ８と、第２筐体４の後端面２５に組み付けられるカバー９と、を備える。以下、第２光コネクタ２を構成する各部材について順に説明する。 Next, the second optical connector 2 will be described. As shown in FIG. 2, the second optical connector 2 includes a second housing 4, an outer housing 5 supported by the second housing 4, an inner housing 6 housed in the outer housing 5, and an inner housing 6. A ferrule 7 housed in the housing 5, a holder 8 attached to the rear end surface of the outer housing 5, and a cover 9 attached to the rear end surface 25 of the second housing 4 are provided. Hereinafter, each member constituting the second optical connector 2 will be described in order.

先ず、第２筐体４について説明する。樹脂製の第２筐体４は、前後方向から見て略矩形状であって後方に開口する箱状の形状を有する。第２筐体４の前面は、第１筐体１１の前面と嵌合可能な形状を有する。第２筐体４の前壁の下側領域には、アウタハウジング５が挿入されることになる略矩形状の開口２１を画成する矩形状の係合縁部２２が形成されている。 First, the second housing 4 will be described. The resin-made second housing 4 has a substantially rectangular shape when viewed from the front-rear direction, and has a box-like shape that opens rearward. The front surface of the second housing 4 has a shape that can be fitted with the front surface of the first housing 11. In the lower region of the front wall of the second housing 4, a rectangular engaging edge portion 22 that defines a substantially rectangular opening 21 into which the outer housing 5 is inserted is formed.

第２筐体４の後面には、開口２１の上側に隣接して、前方に窪み、後方に開口し、且つ幅方向に延びる開口部２３が、幅方向に貫通するように凹設されている。開口部２３には、導電体１０（図１及び図３参照）が収容されることになる。開口部２３と開口２１との間の第２筐体４の前壁には、前後方向に貫通する挿通孔２４が設けられている。挿通孔２４には、導電体１０と電気コネクタ部１７とを接続する上述した電気接続体が挿通されることになる。 On the rear surface of the second housing 4, an opening 23 that is recessed forward, opens rearward, and extends in the width direction is recessed adjacent to the upper side of the opening 21 so as to penetrate in the width direction. .. The conductor 10 (see FIGS. 1 and 3) will be housed in the opening 23. The front wall of the second housing 4 between the opening 23 and the opening 21 is provided with an insertion hole 24 penetrating in the front-rear direction. The above-mentioned electric connector that connects the conductor 10 and the electric connector portion 17 is inserted into the insertion hole 24.

第２筐体４の略矩枠形状の後端面（平面）２５には、周方向の全域に亘って、止水剤Ｓ（図６参照）を充填するための溝２６が形成されている。溝２６は開口部２３に連通している。後端面２５の四隅部には、それぞれ、前後方向に貫通するボルト孔２７が設けられている。第２筐体４の側面における複数のロック部１９に対応する複数箇所（本例では、４箇所）には、ロック部１９と係合する被ロック部２８が設けられている。第２筐体４の下面には、上下方向に貫通する挿通孔４ａ（本例では、４つ）が形成されている。各挿通孔４ａには、後述するように、光ファイバが挿通されることになる。 A groove 26 for filling the water blocking agent S (see FIG. 6) is formed in the rear end surface (plane surface) 25 of the second housing 4 having a substantially rectangular frame shape over the entire area in the circumferential direction. The groove 26 communicates with the opening 23. Bolt holes 27 penetrating in the front-rear direction are provided at the four corners of the rear end surface 25, respectively. Locked portions 28 that engage with the lock portions 19 are provided at a plurality of locations (4 locations in this example) corresponding to the plurality of lock portions 19 on the side surface of the second housing 4. Insertion holes 4a (four in this example) penetrating in the vertical direction are formed on the lower surface of the second housing 4. An optical fiber will be inserted into each insertion hole 4a, as will be described later.

次いで、アウタハウジング５について説明する。図２に示すように、略直方体状の樹脂製のアウタハウジング５には、前後方向に貫通する断面略矩形状の挿入孔３１が形成されている。挿入孔３１には、インナハウジング６が挿入されることになる。本例では、一対の挿入孔３１が、幅方向に並ぶように設けられている。アウタハウジング５の両側壁には、幅方向外側に突出する突起３７が一体で設けられている。 Next, the outer housing 5 will be described. As shown in FIG. 2, the substantially rectangular parallelepiped resin outer housing 5 is formed with an insertion hole 31 having a substantially rectangular cross section penetrating in the front-rear direction. The inner housing 6 will be inserted into the insertion hole 31. In this example, a pair of insertion holes 31 are provided so as to be arranged in the width direction. Projections 37 protruding outward in the width direction are integrally provided on both side walls of the outer housing 5.

次いで、インナハウジング６について説明する。図２に示すように、略直方体状の樹脂製のインナハウジング６には、前後方向に貫通する挿入孔４１が形成されている。挿入孔４１には、フェルール７が挿入されることになる。本例では、一対の挿入孔４１が、幅方向に並ぶように設けられている。本例では、一対のインナハウジング６が、アウタハウジング５の一対の挿入孔３１に挿入されるようになっている。 Next, the inner housing 6 will be described. As shown in FIG. 2, the substantially rectangular parallelepiped resin inner housing 6 is formed with an insertion hole 41 penetrating in the front-rear direction. The ferrule 7 will be inserted into the insertion hole 41. In this example, a pair of insertion holes 41 are provided so as to be arranged in the width direction. In this example, the pair of inner housings 6 are inserted into the pair of insertion holes 31 of the outer housing 5.

インナハウジング６には、挿入孔４１に臨むように、片持ち梁状に前方に延びるランス（図示省略）が一体で形成されている。ランスは、フェルール７の後述する環状突起５２と係合することで、フェルール７の後方への抜けを防止する機能を有する。 The inner housing 6 is integrally formed with a lance (not shown) extending forward like a cantilever so as to face the insertion hole 41. The lance has a function of preventing the ferrule 7 from coming off rearward by engaging with the annular protrusion 52 described later of the ferrule 7.

次いで、フェルール７について説明する。図２に示すように、円筒状の形状を有する樹脂製のフェルール７には、後側から光ファイバの端末が挿入され保持されている。フェルール７の外周面の前後方向中央部及び後端部にはそれぞれ、環状突起５２及び環状突起５３が一体で設けられている。環状突起５３は、インナハウジング６の挿入孔４１内におけるフェルール７の傾きを抑制する機能を発揮する。 Next, the ferrule 7 will be described. As shown in FIG. 2, the terminal of the optical fiber is inserted and held from the rear side in the resin ferrule 7 having a cylindrical shape. An annular protrusion 52 and an annular protrusion 53 are integrally provided at the central portion and the rear end portion of the outer peripheral surface of the ferrule 7 in the front-rear direction, respectively. The annular protrusion 53 exerts a function of suppressing the inclination of the ferrule 7 in the insertion hole 41 of the inner housing 6.

次いで、ホルダ８について説明する。図２に示すように、略平板状の樹脂製のホルダ８には、前後方向に貫通する挿通孔６１が形成されている。挿通孔６１には、光ファイバが挿通されることになる。本例では、一対の挿通孔６１が、幅方向に並ぶように設けられている。 Next, the holder 8 will be described. As shown in FIG. 2, the substantially flat resin holder 8 is formed with an insertion hole 61 penetrating in the front-rear direction. An optical fiber will be inserted into the insertion hole 61. In this example, a pair of insertion holes 61 are provided so as to be arranged in the width direction.

各挿通孔６１の下側縁を構成する箇所には、引出方向規制部６２が一体で形成されている。引出方向規制部６２の湾曲する後側面は、光ファイバに当接するとともに光ファイバを湾曲させながら第２筐体４の外部に向けて案内するための湾曲面６２ａとして機能する。 A pull-out direction regulating portion 62 is integrally formed at a portion forming the lower edge of each insertion hole 61. The curved rear side surface of the pull-out direction regulating portion 62 functions as a curved surface 62a for guiding the optical fiber toward the outside of the second housing 4 while contacting the optical fiber and curving the optical fiber.

ホルダ８の前面の幅方向両端部には、一対の係止枠６４が前方へ突出するように一体で設けられている。一対の係止枠６４は、ホルダ８のアウタハウジング５への組付状態にて、アウタハウジング５の一対の突起３７と係合することで、当該組付状態を維持可能となっている。 A pair of locking frames 64 are integrally provided at both ends of the front surface of the holder 8 in the width direction so as to project forward. The pair of locking frames 64 can maintain the assembled state by engaging with the pair of protrusions 37 of the outer housing 5 while the holder 8 is assembled to the outer housing 5.

次いで、カバー９について説明する。図２に示すように、略矩形平板状の樹脂製のカバー９の四隅部には、それぞれ、前後方向に貫通するボルト孔７１が設けられている。カバー９の第２筐体４への組付状態にて、対応するボルト孔７１及び第２筐体４のボルト孔２７同士をそれぞれ、ボルト及びナット（図示省略）で構成される締結機構により締結することで、カバー９の第２筐体４への組付状態が維持されるようになっている。以上、第２光コネクタ２を構成する各部材について説明した。 Next, the cover 9 will be described. As shown in FIG. 2, bolt holes 71 penetrating in the front-rear direction are provided at the four corners of the substantially rectangular flat plate-shaped resin cover 9. When the cover 9 is assembled to the second housing 4, the corresponding bolt holes 71 and the bolt holes 27 of the second housing 4 are fastened to each other by a fastening mechanism composed of bolts and nuts (not shown), respectively. By doing so, the state of assembling the cover 9 to the second housing 4 is maintained. The members constituting the second optical connector 2 have been described above.

次いで、第２光コネクタ２の組み付けについて説明する。第２光コネクタ２を組み付けるには、先ず、アウタハウジング５の挿入孔３１にインナハウジング６を後方から挿入し、次いで、アウタハウジング５の後端面にホルダ８を組み付けて、ホルダ８の一対の係止枠６４をアウタハウジング５の一対の突起３７に係合させる。これにより、ホルダ８のアウタハウジング５への組み付けが完了する。次いで、アウタハウジング５を第２筐体４の開口２１に後方から挿入して、アウタハウジング５を第２筐体４に組み付ける。 Next, the assembly of the second optical connector 2 will be described. To assemble the second optical connector 2, first, the inner housing 6 is inserted into the insertion hole 31 of the outer housing 5 from the rear, and then the holder 8 is assembled to the rear end surface of the outer housing 5, and a pair of holders 8 are engaged. The stop frame 64 is engaged with the pair of protrusions 37 of the outer housing 5. As a result, the assembly of the holder 8 to the outer housing 5 is completed. Next, the outer housing 5 is inserted into the opening 21 of the second housing 4 from the rear, and the outer housing 5 is assembled to the second housing 4.

次いで、図２の光ファイバ経路Ｌに示すように、光ファイバの端末に接続されたフェルール７を、第２筐体４の挿通孔４ａに挿通させて第２筐体４の外部から内部に導く。次いで、光ファイバをホルダ８の引出方向規制部６２の湾曲面６２ａに当接させて湾曲させながら、フェルール７をホルダ８の挿通孔６１を介して、インナハウジング６の挿入孔４１に挿入し、フェルール７の環状突起５２をインナハウジング６のランスに係止させる。これにより、フェルール７（即ち、光ファイバ）のインナハウジング６への組み付けが完了する。 Next, as shown in the optical fiber path L of FIG. 2, the ferrule 7 connected to the terminal of the optical fiber is inserted into the insertion hole 4a of the second housing 4 and guided from the outside to the inside of the second housing 4. .. Next, the ferrule 7 is inserted into the insertion hole 41 of the inner housing 6 through the insertion hole 61 of the holder 8 while the optical fiber is brought into contact with the curved surface 62a of the pull-out direction regulating portion 62 of the holder 8 and curved. The annular protrusion 52 of the ferrule 7 is locked to the lance of the inner housing 6. As a result, the assembly of the ferrule 7 (that is, the optical fiber) to the inner housing 6 is completed.

次いで、導電体１０を第２筐体４の開口部２３に収容し、第２筐体４の後端面２５に、第２筐体４の後側開口を塞ぐように、カバー９を組み付ける。カバー９の第２筐体４への組み付けは、上述したように、対応するカバー９のボルト孔７１及び第２筐体４のボルト孔２７同士をボルト及びナットで構成される締結機構により締結することで達成される。 Next, the conductor 10 is housed in the opening 23 of the second housing 4, and the cover 9 is assembled to the rear end surface 25 of the second housing 4 so as to close the rear opening of the second housing 4. As described above, the cover 9 is assembled to the second housing 4 by fastening the bolt holes 71 of the corresponding cover 9 and the bolt holes 27 of the second housing 4 to each other by a fastening mechanism composed of bolts and nuts. Achieved by

そして、後に詳述するように、第２筐体４の溝２６、並びに、導電体１０と開口部２３との間の隙間に、止水剤Ｓを充填する。これにより、カバー９と第２筐体４との間の隙間、並びに、導電体１０と開口部２３との間の隙間が、止水剤Ｓにより封止された状態となる。以上により、第２光コネクタ２の組み付けが完了する。ここで、光ファイバの端末に接続されたフェルール７が、本発明の「光学部品」に対応し、第２筐体４及びカバー９が、それぞれ、本発明の「ユニット本体」及び「ユニットカバー」に対応している。 Then, as will be described in detail later, the groove 26 of the second housing 4 and the gap between the conductor 10 and the opening 23 are filled with the water blocking agent S. As a result, the gap between the cover 9 and the second housing 4 and the gap between the conductor 10 and the opening 23 are sealed with the water blocking agent S. As described above, the assembly of the second optical connector 2 is completed. Here, the ferrule 7 connected to the terminal of the optical fiber corresponds to the "optical component" of the present invention, and the second housing 4 and the cover 9 correspond to the "unit body" and the "unit cover" of the present invention, respectively. It corresponds to.

組み付けが完了した第２光コネクタ２と第１光コネクタ１とを嵌合するためには、第１光コネクタ１の第１筐体１１の前面と、第２光コネクタ２の第２筐体４の前面とを、対面させた状態で互いに近づける。そして、アウタハウジング５を第１筐体１１の凹部１５（図２参照）に挿入しながら、第１筐体１１と第２筐体４とを嵌合させて、第１筐体１１のロック部１９と第２筐体４の被ロック部２８とを係合させる。これにより、第１光コネクタ１と第２光コネクタ２との嵌合が完了し、図１に示す光コネクタの接続構造３が得られる。 In order to fit the assembled second optical connector 2 and the first optical connector 1, the front surface of the first housing 11 of the first optical connector 1 and the second housing 4 of the second optical connector 2 Bring the front surface of the light closer to each other while facing each other. Then, while inserting the outer housing 5 into the recess 15 (see FIG. 2) of the first housing 11, the first housing 11 and the second housing 4 are fitted to each other, and the lock portion of the first housing 11 is fitted. 19 and the locked portion 28 of the second housing 4 are engaged with each other. As a result, the fitting of the first optical connector 1 and the second optical connector 2 is completed, and the optical connector connection structure 3 shown in FIG. 1 is obtained.

第１光コネクタ１と第２光コネクタ２との嵌合完了状態（光コネクタの接続構造３）では、インナハウジング６の挿入孔４１にレンズハウジング１２の筒状部１２ａ（図２参照）が内挿されて、フェルール７の前端面がレンズ体の筒状部の前端面と同軸的に対面接触する。これにより、光ファイバの光軸と、レンズ体の光軸とが一致することで、光ファイバとレンズ体との間で光信号が適正に伝達され得る。 In the fully fitted state of the first optical connector 1 and the second optical connector 2 (optical connector connection structure 3), the tubular portion 12a (see FIG. 2) of the lens housing 12 is inside the insertion hole 41 of the inner housing 6. When inserted, the front end surface of the ferrule 7 comes into face-to-face contact coaxially with the front end surface of the tubular portion of the lens body. As a result, the optical axis of the optical fiber and the optical axis of the lens body coincide with each other, so that an optical signal can be properly transmitted between the optical fiber and the lens body.

次いで、第２筐体４の溝２６、並びに、導電体１０と開口部２３との間の隙間への止水剤Ｓの充填について説明する。本例では、図３（ｂ）に示すように、第２筐体４の開口部２３には、一対の保持部材８０によって両端部近傍がそれぞれ保持された２つの細長平板状の導電体１０が、前後方向に積層配置された状態で収容される。 Next, filling the groove 26 of the second housing 4 and the gap between the conductor 10 and the opening 23 with the water blocking agent S will be described. In this example, as shown in FIG. 3B, the opening 23 of the second housing 4 is provided with two elongated flat-plate-shaped conductors 10 in which the vicinity of both ends is held by a pair of holding members 80. , It is housed in a state of being stacked in the front-rear direction.

図５（ａ）に示すように、導電体１０は、細長平板状の導体１０ａと、導体１０ａを覆う樹脂製の被覆１０ｂとで構成されている。積層配置された２つの導電体１０では、長手方向中央部の異なる位置にて、被覆１０ｂが除去されて導体１０ａが露出している。なお、各導電体１０における導体１０ａが露出した箇所に、導電体１０と電気コネクタ部１７（図２参照）とを電気的に接続する上述した電気接続体がそれぞれ接続される。 As shown in FIG. 5A, the conductor 10 is composed of an elongated flat plate-shaped conductor 10a and a resin coating 10b covering the conductor 10a. In the two conductors 10 arranged in a laminated manner, the coating 10b is removed and the conductor 10a is exposed at different positions in the central portion in the longitudinal direction. In addition, the above-mentioned electric connector for electrically connecting the conductor 10 and the electric connector portion 17 (see FIG. 2) is connected to a portion of each conductor 10 where the conductor 10a is exposed.

各保持部材８０は、図５（ａ）に示すように、樹脂製の本体部８１及び固定部８２で構成される。本体部８１及び固定部８２それぞれに突部８３が設けられている。本体部８１及び固定部８２を、積層配置された２つの導電体１０に組み付けることで、図５（ｂ）に示すように、保持部材８０が、２つの導電体１０それぞれの外周を全周に亘って密着して覆うように、２つの導電体１０に組み付けられる。２つの導電体１０に保持部材８０が組み付けられた状態にて、一対の突部８３が、保持部材８０の両側端部にて２つの導電体１０の積層方向に沿って延びるように配置される。本例では、図５（ｂ）に示すように、積層配置された２つの導電体１０における被覆１０ｂが存在する両端部近傍の所定箇所にてそれぞれ、一対の保持部材８０が所定の間隔を空けて組み付けられる。 As shown in FIG. 5A, each holding member 80 is composed of a resin main body portion 81 and a fixing portion 82. A protrusion 83 is provided on each of the main body 81 and the fixed portion 82. By assembling the main body portion 81 and the fixing portion 82 to the two conductors 10 arranged in a laminated manner, as shown in FIG. 5B, the holding member 80 makes the outer circumference of each of the two conductors 10 all around. It is assembled to the two conductors 10 so as to cover the two conductors in close contact with each other. With the holding member 80 assembled to the two conductors 10, a pair of protrusions 83 are arranged at both end portions of the holding member 80 so as to extend along the stacking direction of the two conductors 10. .. In this example, as shown in FIG. 5B, a pair of holding members 80 are spaced apart from each other at predetermined locations near both ends of the two conductors 10 arranged in a laminated manner where the coatings 10b are present. Can be assembled.

第２筐体４の開口部２３の幅方向両側端部にはそれぞれ、図４に示すように、開口部２３の内周壁面における開口部２３の深さ方向（前後方向）に延びる側壁面において、一対の保持部材８０に対応するように、開口部２３の深さ方向（前後方向）に延びる一対の嵌入凹部９１が形成されている。 As shown in FIG. 4, each end of the opening 23 of the second housing 4 in the width direction has a side wall surface extending in the depth direction (front-back direction) of the opening 23 on the inner peripheral wall surface of the opening 23. A pair of fitting recesses 91 extending in the depth direction (front-back direction) of the opening 23 are formed so as to correspond to the pair of holding members 80.

図５（ｂ）に示すように二対の保持部材８０が組み付けられた２つの導電体１０は、図３（ｂ）に示すように、それぞれの一対の保持部材８０が対応する一対の嵌入凹部９１に嵌め込まれるように、第２筐体４の開口部２３に組み付けられる。その際、各保持部材８０は、突部８３を介して嵌入凹部９１に圧入される。以下、説明の便宜上、図３（ｂ）に示すように、一対の保持部材８０に挟まれる領域（２箇所）を「充填領域８４」と呼ぶ。充填領域８４は、第２筐体４の溝２６と連通している。 As shown in FIG. 5 (b), the two conductors 10 to which the two pairs of holding members 80 are assembled have a pair of fitting recesses corresponding to each pair of holding members 80. It is assembled to the opening 23 of the second housing 4 so as to be fitted into the 91. At that time, each holding member 80 is press-fitted into the fitting recess 91 via the protrusion 83. Hereinafter, for convenience of explanation, as shown in FIG. 3B, the regions (two locations) sandwiched between the pair of holding members 80 are referred to as "filling regions 84". The filling region 84 communicates with the groove 26 of the second housing 4.

図３（ａ）に示すように、第２筐体４において開口部２３の底壁を構成する前壁部における充填領域８４に対応する箇所（２箇所）にて、前後方向に貫通する貫通孔２９が形成されている。貫通孔２９は、止水剤Ｓを注入するための注入孔として機能する。 As shown in FIG. 3A, through holes penetrating in the front-rear direction at locations (two locations) corresponding to the filling regions 84 in the front wall portion forming the bottom wall of the opening 23 in the second housing 4. 29 is formed. The through hole 29 functions as an injection hole for injecting the water blocking agent S.

即ち、本例では、図３（ａ）に示すようにカバー９が組み付けられた第２筐体４を、第２筐体４がカバー９の上側に位置する向きに配置した状態で、止水剤Ｓが貫通孔２９に注入される。これにより、止水剤Ｓが充填領域８４に注入されることになる。充填領域８４内に注入された止水剤Ｓは、先ずは、図６（ｂ）及び図６（ｃ）に示すように、充填領域８４内に充填される。止水剤Ｓが充填領域８４に充填された後は、止水剤Ｓは、充填領域８４に連通する第２筐体４の溝２６内にも移動し、図６（ａ）に示すように、溝２６にも周方向の全域に亘って充填される。 That is, in this example, as shown in FIG. 3A, the second housing 4 to which the cover 9 is assembled is arranged so that the second housing 4 is located on the upper side of the cover 9, and the water is stopped. The agent S is injected into the through hole 29. As a result, the water blocking agent S is injected into the filling region 84. The water blocking agent S injected into the filling region 84 is first filled into the filling region 84 as shown in FIGS. 6 (b) and 6 (c). After the water blocking agent S is filled in the filling region 84, the water blocking agent S also moves into the groove 26 of the second housing 4 communicating with the filling region 84, as shown in FIG. 6A. , The groove 26 is also filled over the entire circumferential direction.

ここで、上述したように、保持部材８０は、２つの導電体１０それぞれの外周を全周に亘って密着して覆っている。更には、図６（ｂ）に示すように、保持部材８０の第２筐体４側の端面（図６（ｂ）において上端面）は、第２筐体４の開口部２３の底壁面と密着し、且つ、保持部材８０のカバー９側の端面（図６（ｂ）において下端面）は、カバー９の内壁面と密着している。更には、上述したように、保持部材８０の一対の突部８３が嵌入凹部９１に圧入されている。 Here, as described above, the holding member 80 closely covers the outer circumferences of the two conductors 10 over the entire circumference. Further, as shown in FIG. 6B, the end surface of the holding member 80 on the second housing 4 side (the upper end surface in FIG. 6B) is the bottom wall surface of the opening 23 of the second housing 4. The end surface (lower end surface in FIG. 6B) of the holding member 80 on the cover 9 side is in close contact with the inner wall surface of the cover 9. Further, as described above, the pair of protrusions 83 of the holding member 80 are press-fitted into the fitting recess 91.

これらの結果、保持部材８０と導電体１０との間、保持部材８０と開口部２３の内周壁面との間、及び、保持部材８０とカバー９の内壁面との間、の何れにおいても、隙間が形成されていない。即ち、充填領域８４に充填された止水剤Ｓは、充填領域８４の外部に流れ出すことがない。 As a result, in any of between the holding member 80 and the conductor 10, between the holding member 80 and the inner peripheral wall surface of the opening 23, and between the holding member 80 and the inner wall surface of the cover 9. No gap is formed. That is, the water blocking agent S filled in the filling region 84 does not flow out of the filling region 84.

このように、第２筐体４の溝２６、並びに、充填領域８４に止水剤Ｓが充填され、充填された止水剤Ｓが固化することで、カバー９と第２筐体４との間の隙間、並びに、導電体１０と開口部２３との間の隙間が、止水剤Ｓにより封止される。 In this way, the groove 26 of the second housing 4 and the filling area 84 are filled with the water blocking agent S, and the filled water blocking agent S solidifies to form the cover 9 and the second housing 4. The gap between them and the gap between the conductor 10 and the opening 23 are sealed with the water blocking agent S.

以上、本発明の実施形態に係る光学部品の接続構造によれば、第２筐体４に設けられた開口部２３に、導電体１０が挿通されるにあたり、導電体１０に組み付けられた一対の保持部材８０を開口部２３の一対の嵌入凹部９１に嵌め込み、第２筐体４にカバー９を組み付けた上で、第２筐体４の貫通孔２９を通じて止水剤Ｓが注入される。注入された止水剤Ｓは、一対の保持部材８０に挟まれる充填領域８４に広がる。これにより、開口部２３と導電体１０との間の隙間が、一対の保持部材８０および止水剤Ｓによって封止される。したがって、本構成の光学部品ユニットの接続構造は、光学部品ユニットと導電体１０との間を通じた水の侵入を抑制可能である。 As described above, according to the connection structure of the optical components according to the embodiment of the present invention, when the conductor 10 is inserted into the opening 23 provided in the second housing 4, a pair of pairs assembled to the conductor 10. The holding member 80 is fitted into the pair of fitting recesses 91 of the opening 23, the cover 9 is assembled to the second housing 4, and then the water blocking agent S is injected through the through hole 29 of the second housing 4. The injected water blocking agent S spreads over the filling region 84 sandwiched between the pair of holding members 80. As a result, the gap between the opening 23 and the conductor 10 is sealed by the pair of holding members 80 and the water blocking agent S. Therefore, the connection structure of the optical component unit having the present configuration can suppress the intrusion of water through between the optical component unit and the conductor 10.

更に、本発明の実施形態に係る光学部品の接続構造によれば、第２筐体４の貫通孔２９を通じて注入された止水剤Ｓは、一対の保持部材８０に挟まれた充填領域８４だけでなく、充填領域８４に連通する溝２６にも注入される。よって、開口部２３だけでなく、第２筐体４とカバー９との間を通じた水の侵入も抑制できる。 Further, according to the connection structure of the optical components according to the embodiment of the present invention, the water blocking agent S injected through the through hole 29 of the second housing 4 is only the filling region 84 sandwiched between the pair of holding members 80. However, it is also injected into the groove 26 communicating with the filling region 84. Therefore, it is possible to suppress the intrusion of water not only through the opening 23 but also between the second housing 4 and the cover 9.

更に、本発明の実施形態に係る光学部品の接続構造によれば、保持部材８０が有する突部８３により、保持部材８０が嵌入凹部９１に圧入される。よって、保持部材８０と嵌入凹部９１との間の止水性が高まり、光学部品ユニットと導電体１０との間を通じた水の侵入を更に強固に抑制可能できる。 Further, according to the optical component connection structure according to the embodiment of the present invention, the holding member 80 is press-fitted into the fitting recess 91 by the protrusion 83 of the holding member 80. Therefore, the water blocking property between the holding member 80 and the fitting recess 91 is enhanced, and the intrusion of water through the optical component unit and the conductor 10 can be further strongly suppressed.

＜他の態様＞
なお、本発明は上記各実施形態に限定されることはなく、本発明の範囲内において種々の変形例を採用できる。例えば、本発明は、上述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の材質、形状、寸法、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。 <Other aspects>
The present invention is not limited to each of the above embodiments, and various modifications can be adopted within the scope of the present invention. For example, the present invention is not limited to the above-described embodiment, and can be appropriately modified, improved, and the like. In addition, the material, shape, size, number, arrangement location, etc. of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

例えば、保持部材８０及び嵌入凹部９１が、図７及び図８に示すように構成されていてもよい。即ち、この例では、図７（ｂ）に示すように、同形の一対の分割保持部材８５ａが、積層配置された２つの導電体１０に組み付けることで、連結部８５（図８（ａ）参照）によって互いに連結された一対の保持部材８０が、２つの導電体１０それぞれの外周を全周に亘って密着して覆うように、２つの導電体１０に組み付けられる。 For example, the holding member 80 and the fitting recess 91 may be configured as shown in FIGS. 7 and 8. That is, in this example, as shown in FIG. 7B, a pair of split holding members 85a having the same shape are assembled to the two conductors 10 arranged in a laminated manner to form a connecting portion 85 (see FIG. 8A). ), The pair of holding members 80 are assembled to the two conductors 10 so as to cover the outer circumferences of the two conductors 10 in close contact with each other over the entire circumference.

図７（ａ）及び図８（ｂ）に示すように、嵌入凹部９１には、凸部９２、及び、窪み部９３が形成され、保持部材８０の両側端部には、凸部９２及び窪み部９３に対応するように、凹部８６及び突部８７が形成されている。この結果、保持部材８０と嵌入凹部９１との間が、凹凸嵌め合い構造を有する。よって、保持部材８０と嵌入凹部９１との間の隙間が、いわゆるラビリンス構造となり、沿面距離が長くなる。このため、保持部材８０と嵌入凹部９１との間に僅かな隙間で形成されていても、止水剤Ｓを注入したときに、その隙間を通じて充填領域８４の外部に止水剤Ｓが流れ出しにくいことになる。 As shown in FIGS. 7 (a) and 8 (b), a convex portion 92 and a recessed portion 93 are formed in the fitting recess 91, and the convex portion 92 and the recessed portion 92 are formed at both end portions of the holding member 80. A recess 86 and a protrusion 87 are formed so as to correspond to the portion 93. As a result, the holding member 80 and the fitting recess 91 have an uneven fitting structure. Therefore, the gap between the holding member 80 and the fitting recess 91 has a so-called labyrinth structure, and the creepage distance becomes long. Therefore, even if a slight gap is formed between the holding member 80 and the fitting recess 91, it is difficult for the water blocking agent S to flow out of the filling region 84 through the gap when the water blocking agent S is injected. It will be.

同様に、図８（ｄ）に示すように、保持部材８０のカバー９側の端面には、凹部８８が形成され、カバー９の内壁面には、凹部８８に対応するように、突部７２が形成されている。この結果、保持部材８０とカバー９との間が、凹凸嵌め合い構造を有する。よって、保持部材８０とカバー９との間の隙間が、いわゆるラビリンス構造となり、沿面距離が長くなる。その結果、保持部材８０とカバー９との間に僅かな隙間で形成されていても、止水剤Ｓを注入したときに、その隙間を通じて充填領域８４の外部に止水剤Ｓが流れ出しにくいことになる。なお、図８（ｃ）に示すように、保持部材８０と第２筐体４の開口部２３の底壁面との間においても、凹凸嵌め合い構造を構成してもよい。 Similarly, as shown in FIG. 8D, a recess 88 is formed on the end surface of the holding member 80 on the cover 9 side, and a protrusion 72 is formed on the inner wall surface of the cover 9 so as to correspond to the recess 88. Is formed. As a result, the holding member 80 and the cover 9 have an uneven fitting structure. Therefore, the gap between the holding member 80 and the cover 9 has a so-called labyrinth structure, and the creepage distance becomes long. As a result, even if a slight gap is formed between the holding member 80 and the cover 9, when the water blocking agent S is injected, it is difficult for the water blocking agent S to flow out of the filling region 84 through the gap. become. As shown in FIG. 8C, a concave-convex fitting structure may also be formed between the holding member 80 and the bottom wall surface of the opening 23 of the second housing 4.

また、図９に示すように、保持部材８０が、ゴム材等の弾性部材で構成されてもよい。図９（ａ）に示す例では、保持部材８０を導電体１０に組み付けやすくするために、スリット８０ａが設けられている。また、保持部材８０の外周に環状リップ部８９が設けられている。図９（ｂ）に示すように、この保持部材８０は、環状リップ部８９を介して嵌入凹部９１に圧入される。これにより、保持部材８０と嵌入凹部９１との間の止水性が更に高まる。 Further, as shown in FIG. 9, the holding member 80 may be made of an elastic member such as a rubber material. In the example shown in FIG. 9A, a slit 80a is provided in order to facilitate the assembly of the holding member 80 to the conductor 10. Further, an annular lip portion 89 is provided on the outer circumference of the holding member 80. As shown in FIG. 9B, the holding member 80 is press-fitted into the fitting recess 91 via the annular lip portion 89. As a result, the water blocking property between the holding member 80 and the fitting recess 91 is further enhanced.

また、図１０に示すように、第２筐体４に、導電体１０が収容されない場合、導電体１０に代えて、一対の閉塞壁９４を一対の嵌入凹部９１に挿入することで、開口部２３を塞ぐことも可能である。この場合、止水剤Ｓは、一対の保持部材８０に挟まれる充填領域８４に代えて、一対の閉塞壁９４に挟まれる充填領域９５に充填されることになる。この充填領域９５も、第２筐体４の溝２６に連通している。 Further, as shown in FIG. 10, when the conductor 10 is not accommodated in the second housing 4, a pair of closing walls 94 are inserted into the pair of fitting recesses 91 instead of the conductor 10, and the opening is opened. It is also possible to block 23. In this case, the water blocking agent S is filled in the filling region 95 sandwiched between the pair of closing walls 94 instead of the filling region 84 sandwiched between the pair of holding members 80. The filling region 95 also communicates with the groove 26 of the second housing 4.

また、上記実施形態では、止水剤Ｓを注入するための貫通孔２９が、第２筐体４側に形成されている（図３（ａ）参照）。これに対し、図１１に示すように、止水剤Ｓを注入するための貫通孔７３が、カバー９側に形成されていてもよい。また、図１１に示すように、カバー９に、止水剤Ｓの充填状況を確認するための視認孔７４が設けられていてもよい。 Further, in the above embodiment, a through hole 29 for injecting the water blocking agent S is formed on the second housing 4 side (see FIG. 3A). On the other hand, as shown in FIG. 11, a through hole 73 for injecting the water blocking agent S may be formed on the cover 9 side. Further, as shown in FIG. 11, the cover 9 may be provided with a visual hole 74 for confirming the filling status of the water blocking agent S.

ここで、上述した本発明に係る光学部品ユニットの接続構造の実施形態の特徴をそれぞれ以下［１］〜［５］に簡潔に纏めて列記する。
［１］
光学部品（７）、前記光学部品（７）を収容するユニット本体（４）、及び、前記ユニット本体（４）に組み付けられるユニットカバー（９）を有する光学部品ユニットと、導電体（１０）と、を備える、光学部品ユニットの接続構造であって、
前記ユニット本体（４）は、
前記導電体（１０）を外部から内部に挿通する開口部（２３）と、前記開口部（２３）の内周壁面に設けられる一対の嵌入凹部（９１）と、を有し、
前記導電体（１０）は、
当該導電体（１０）の外周を覆うように当該導電体（１０）に組み付けられる一対の保持部材（８０）を有し、
前記ユニット本体（４）又は前記ユニットカバー（９）は、
前記開口部（２３）に対応する位置に開口した貫通孔（２９）を有し、
当該接続構造は、
前記開口部（２３）において、前記一対の前記保持部材（８０）が前記一対の前記嵌入凹部（９１）に嵌め込まれた状態にて前記ユニット本体（４）に前記ユニットカバー（９）が組み付けられ、前記貫通孔（２９）を通じて前記一対の前記保持部材（８０）に挟まれる領域（８４）に止水剤（Ｓ）が注入され、前記開口部（２３）が封止される、ように構成される、
光学部品ユニットの接続構造。
［２］
上記［１］に記載の接続構造において、
前記ユニット本体（４）は、
前記光学部品（７）の収容空間を取り囲む壁部（２５）と、前記壁部（２５）と前記ユニットカバー（９）との接触箇所に設けられ且つ前記開口部（２３）に連通する溝部（２６）と、を更に有し、
当該接続構造は、
前記領域（８４）に注入された前記止水剤（Ｓ）が前記溝部（２６）に流入し、前記接触箇所が封止される、ように構成される、
光学部品ユニットの接続構造。
［３］
上記［１又は上記［２］に記載の接続構造において、
前記保持部材（８０）は、
前記嵌入凹部（９１）に向けて突出する突部（８３）を有し、前記突部（８３）を用いて前記嵌入凹部（９１）に圧入される、
光学部品ユニットの接続構造。
［４］
上記［１］〜上記［３］の何れか一つに記載の接続構造において、
前記保持部材（８０）と前記嵌入凹部（９１）との間、及び、前記保持部材（８０）と前記ユニットカバー（９）との間の少なくとも一方が、凹凸嵌め合い構造を有する、
光学部品ユニットの接続構造。
［５］
上記［１］又は上記［２］に記載の接続構造において、
前記保持部材（８０）は、
弾性材料から構成されるとともに前記嵌入凹部（９１）に向けて突出する突条部（８９）を有し、前記突条部（８９）を前記嵌入凹部（９１）に押し付ける、ように構成される、
光学部品ユニットの接続構造。 Here, the features of the above-described embodiments of the optical component unit connection structure according to the present invention are briefly summarized and listed below in [1] to [5], respectively.
[1]
An optical component unit having an optical component (7), a unit body (4) accommodating the optical component (7), and a unit cover (9) assembled to the unit body (4), and a conductor (10). It is a connection structure of an optical component unit provided with,
The unit body (4)
It has an opening (23) through which the conductor (10) is inserted from the outside to the inside, and a pair of fitting recesses (91) provided on the inner peripheral wall surface of the opening (23).
The conductor (10) is
It has a pair of holding members (80) that are assembled to the conductor (10) so as to cover the outer periphery of the conductor (10).
The unit body (4) or the unit cover (9) is
It has a through hole (29) opened at a position corresponding to the opening (23).
The connection structure is
In the opening (23), the unit cover (9) is assembled to the unit body (4) in a state where the pair of holding members (80) are fitted into the pair of fitting recesses (91). The water blocking agent (S) is injected into the region (84) sandwiched between the pair of holding members (80) through the through hole (29), and the opening (23) is sealed. Be done,
Connection structure of optical component unit.
[2]
In the connection structure described in [1] above,
The unit body (4)
A groove portion (25) provided at a contact point between the wall portion (25) surrounding the accommodation space of the optical component (7) and the wall portion (25) and the unit cover (9) and communicating with the opening (23). 26) and further
The connection structure is
The water blocking agent (S) injected into the region (84) flows into the groove portion (26), and the contact portion is sealed.
Connection structure of optical component unit.
[3]
In the connection structure described in [1] or [2] above,
The holding member (80) is
It has a protrusion (83) that protrudes toward the fitting recess (91), and is press-fitted into the fitting recess (91) using the protrusion (83).
Connection structure of optical component unit.
[4]
In the connection structure according to any one of the above [1] to [3],
At least one of the holding member (80) and the fitting recess (91) and between the holding member (80) and the unit cover (9) has an uneven fitting structure.
Connection structure of optical component unit.
[5]
In the connection structure according to the above [1] or the above [2],
The holding member (80) is
It is made of an elastic material and has a ridge portion (89) protruding toward the fitting recess (91), and the ridge portion (89) is pressed against the fitting recess (91). ,
Connection structure of optical component unit.

４第２筐体（ユニット本体）
７フェルール（光学部品）
９カバー（ユニットカバー）
１０導電体
２３開口部
２５後端面（壁部）
２６溝（溝部）
８０保持部材
８３突部
８４充填領域（領域）
８９環状リップ部（突条部）
９１嵌入凹部
Ｓ止水剤 4 Second housing (unit body)
7 Ferrules (optical parts)
9 Cover (unit cover)
10 Conductor 23 Opening 25 Rear end face (wall)
26 Groove (groove)
80 Holding member 83 Protrusion 84 Filling area (area)
89 Circular lip part (protruding part)
91 Fitting recess S Water stop agent

Claims

An optical component unit connection structure comprising an optical component, a unit body for accommodating the optical component, an optical component unit having a unit cover assembled to the unit body, and a conductor.
The unit body
It has an opening through which the conductor is inserted from the outside to the inside, and a pair of fitting recesses provided on the inner peripheral wall surface of the opening.
The conductor is
It has a pair of holding members that are assembled to the conductor so as to cover the outer circumference of the conductor.
The unit body or the unit cover
It has a through hole opened at a position corresponding to the opening.
The connection structure is
In the opening, a region where the unit cover is assembled to the unit body in a state where the pair of holding members are fitted into the pair of fitting recesses and sandwiched between the pair of holding members through the through holes. Is configured to be injected with a water blocking agent and the opening is sealed.
Connection structure of optical component unit.

In the connection structure according to claim 1,
The unit body
It further has a wall portion surrounding the accommodation space of the optical component, and a groove portion provided at a contact portion between the wall portion and the unit cover and communicating with the opening portion.
The connection structure is
The water blocking agent injected into the region flows into the groove portion, and the contact portion is sealed.
Connection structure of optical component unit.

In the connection structure according to claim 1 or 2.
The holding member is
It has a protrusion that protrudes toward the fitting recess, and is press-fitted into the fitting recess using the protrusion.
Connection structure of optical component unit.

In the connection structure according to any one of claims 1 to 3.
At least one of the holding member and the fitting recess and between the holding member and the unit cover has an uneven fitting structure.
Connection structure of optical component unit.

In the connection structure according to claim 1 or 2.
The holding member is
It is made of an elastic material and has a ridge portion that protrudes toward the fitting recess, and is configured to press the ridge portion against the fitting recess.
Connection structure of optical component unit.