JP6319072B2

JP6319072B2 - Transmitter and method for manufacturing transmitter

Info

Publication number: JP6319072B2
Application number: JP2014247105A
Authority: JP
Inventors: 陽之介小山
Original assignee: Denso Corp
Current assignee: Denso Corp
Priority date: 2014-12-05
Filing date: 2014-12-05
Publication date: 2018-05-09
Anticipated expiration: 2034-12-05
Also published as: JP2016107821A

Description

本発明は、送信機および送信機の製造方法に関するものである。 The present invention relates to a transmitter and a method for manufacturing the transmitter.

従来、水素燃料を用いて生成される電気エネルギーで走行する燃料電池車が知られている。また、この燃料電池車において水素ステーションから水素燃料の供給を受けるレセプタクルの近傍に、送信機が設置され、この送信機から水素ステーションに車両情報（例えば、水素タンク内の温度）が送信される技術が知られている（例えば、特許文献１参照）。 Conventionally, a fuel cell vehicle that travels with electric energy generated using hydrogen fuel is known. Further, in this fuel cell vehicle, a transmitter is installed in the vicinity of a receptacle that receives supply of hydrogen fuel from a hydrogen station, and vehicle information (for example, temperature in a hydrogen tank) is transmitted from the transmitter to the hydrogen station. Is known (see, for example, Patent Document 1).

特開２０１１−１５６８９６号公報JP 2011-156896 A

上記のような送信機は、信号を送信する送信用デバイス（例えば赤外線送信用のＬＥＤ）を有しているが、この送信用デバイスを水等から保護するため、ケーシング内に収容することが考えられる。また、ケーシングは、ベース部とカバー部という２つの部材から構成されることが考えられる。この場合、ベース部とカバー部の間に送信用デバイスを配置し、ベース部とカバー部を接合することで、送信機が組み上がる。 The transmitter as described above has a transmission device for transmitting a signal (for example, an LED for infrared transmission). In order to protect the transmission device from water or the like, it may be accommodated in a casing. It is done. Moreover, it is possible that a casing is comprised from two members, a base part and a cover part. In this case, the transmitter is assembled by disposing the transmitting device between the base portion and the cover portion and joining the base portion and the cover portion.

このような構成の送信機において、送信機をレセプタクルの近傍に設置したときに、レセプタクルの筒部と送信用デバイスとの間隔を狭くしたいという要請がある（例えば、ＳＡＥＪ２７７９の規定）。しかし、筒部と送信用デバイスとの間隔を狭くすると、筒部と送信用デバイスの間においてベース部とカバー部の接合面を十分な広さで確保することが困難になる。 In the transmitter having such a configuration, when the transmitter is installed in the vicinity of the receptacle, there is a demand for reducing the interval between the receptacle cylinder and the transmitting device (for example, the provisions of SAE J2779). However, if the interval between the cylinder part and the transmission device is narrowed, it becomes difficult to ensure a sufficiently large joint surface between the base part and the cover part between the cylinder part and the transmission device.

本発明は上記点に鑑み、燃料電池車において水素燃料を受け入れる筒部の近傍に配置される送信機の構成を工夫して、筒部と送信用デバイスの間でベース部とカバー部の接合面をより広く確保することを目的とする。 In view of the above points, the present invention devised a configuration of a transmitter disposed in the vicinity of a cylindrical portion that receives hydrogen fuel in a fuel cell vehicle, and joined a base portion and a cover portion between the cylindrical portion and the transmitting device. The purpose is to secure more widely.

上記目的を達成するための請求項１に記載の発明は、燃料電池車において水素燃料を受け入れる筒部（１ａ）の近傍に配置される送信機であって、信号を送信する送信用デバイス（２５ａ〜２５ｄ）と、前記送信用デバイスが搭載されるベース部（２２）と、前記ベース部に接合されて前記送信用デバイスを覆うカバー部（２１）と、を備え、前記ベース部と前記カバー部とが接合した接合面（２９）のうち、前記送信用デバイスよりも前記筒部側にある筒部側接合面（２９）の法線（１１）は、当該送信機が前記筒部の近傍に配置されたとき、前記筒部の根元（１ｄ）から先端（１ｃ）に向かうにつれて、前記筒部の軸（１０）に近づくように、前記筒部の軸に対して傾斜していることを特徴とする送信機である。 In order to achieve the above object, an invention according to claim 1 is a transmitter disposed in the vicinity of a cylindrical portion (1a) for receiving hydrogen fuel in a fuel cell vehicle, wherein the transmitting device (25a) transmits a signal. 25d), a base part (22) on which the transmission device is mounted, and a cover part (21) joined to the base part to cover the transmission device, the base part and the cover part The normal line (11) of the cylinder side joint surface (29) on the cylinder part side of the transmitting device is the junction surface (29) where the transmitter is located near the cylinder part. When arranged, it is inclined with respect to the axis of the cylinder part so as to approach the axis (10) of the cylinder part as it goes from the root (1d) to the tip (1c) of the cylinder part. Is a transmitter.

このように、送信用デバイスよりも筒部側にある筒部側接合面の法線は、当該送信機が当該筒部の近傍に配置されたとき、筒部の根元から充填口に向かうにつれて、筒部の軸に近づくように、筒部の軸に対して傾斜している。したがって、筒部側接合面の法線が筒部の軸に対して平行な場合に比べて、筒部と送信用デバイスの間においてベース部とカバー部の接合面を広く確保することができる。 Thus, the normal of the cylinder side joint surface located on the cylinder part side of the transmitting device, when the transmitter is arranged in the vicinity of the cylinder part, as it goes from the root of the cylinder part to the filling port, It inclines with respect to the axis | shaft of a cylinder part so that the axis | shaft of a cylinder part may be approached. Therefore, compared with the case where the normal line of the cylinder side joining surface is parallel to the axis of the cylinder part, the joining surface of the base part and the cover part can be widely secured between the cylinder part and the transmission device.

また、請求項５に記載の発明は、燃料電池車において水素燃料を受け入れる筒部（１ａ）の近傍に配置される送信機（２）の製造方法であって、信号を送信する送信用デバイス（２５ａ〜２５ｄ）と、前記送信用デバイスが搭載されるベース部（２２）と、前記ベース部にレーザー溶着で接合されて前記送信用デバイスを覆うカバー部（２１）と、を用意する工程を備え、前記用意する工程で用意された前記カバー部は、側壁部（２１ｂ）と、前記送信機が前記筒部の近傍に配置されたときに前記側壁部から前記筒部の方向に伸びるカバー外縁部（２１ｃ）とを備え、前記用意する工程で用意された前記ベース部は、前記カバー外縁部に対向するベース外縁部（２２ｃ）と、前記ベース外縁部から突出する突出部（２２ｄ）とを備え、当該製造方法は、更に、前記カバー外縁部を前記突出部に当接させる工程と、近赤外線レーザー（５０）を前記カバー外縁部越しに前記突出部に照射して前記突出部を溶融させることで、前記ベース部と前記カバー部とを接合する工程と、を備え、前記接合する工程において、前記突出部に照射する前記近赤外線レーザーの光軸方向（５１）を、前記突出部に近づくにつれて前記側壁部に近づくように、かつ、前記突出部の突出方向（１３）と成す角が５°未満となるように、前記側壁部に対して傾斜させることを特徴とする送信機の製造方法である。 The invention according to claim 5 is a method for manufacturing a transmitter (2) disposed in the vicinity of a cylindrical portion (1a) for receiving hydrogen fuel in a fuel cell vehicle, wherein the transmitter (2) transmits a signal ( 25a to 25d), a base portion (22) on which the transmission device is mounted, and a cover portion (21) that is joined to the base portion by laser welding and covers the transmission device. The cover portion prepared in the preparing step includes a side wall portion (21b) and a cover outer edge portion extending from the side wall portion toward the tube portion when the transmitter is disposed in the vicinity of the tube portion. (21c), and the base portion prepared in the preparing step includes a base outer edge portion (22c) facing the cover outer edge portion and a protruding portion (22d) protruding from the base outer edge portion. , Made by The method further comprises a step of bringing the outer edge of the cover into contact with the protruding portion, and irradiating the protruding portion with a near infrared laser (50) over the outer edge of the cover to melt the protruding portion, Joining the base portion and the cover portion, and in the joining step, the side wall portion as the optical axis direction (51) of the near-infrared laser irradiating the projecting portion approaches the projecting portion. The transmitter is inclined with respect to the side wall so that the angle formed with the protruding direction (13) of the protruding portion is less than 5 °.

このように、近赤外線レーザー溶着を行う際に、突出部に照射する近赤外線レーザーの光軸方向を、突出部に近づくにつれて前記側壁部に近づくように側壁部に対して傾斜させることで、側壁部と近赤外線レーザーの干渉の可能性を低減することができる。また、近赤外線レーザーの光軸方向を、突出部の突出方向と成す角が５°未満となるように、筒部の軸に対して傾斜させることで、突出部に近赤外線レーザーがほぼ偏りなく当たり、突出部の溶融が偏りなく進行する。 Thus, when performing near-infrared laser welding, the optical axis direction of the near-infrared laser applied to the protruding portion is inclined with respect to the side wall portion so as to approach the side wall portion as it approaches the protruding portion. The possibility of interference between the part and the near-infrared laser can be reduced. Also, the near-infrared laser is almost unbiased in the protrusion by tilting the optical axis direction of the near-infrared laser with respect to the axis of the tube so that the angle formed with the protrusion direction of the protrusion is less than 5 °. The melting of the projecting portion proceeds evenly.

なお、上記および特許請求の範囲における括弧内の符号は、特許請求の範囲に記載された用語と後述の実施形態に記載される当該用語を例示する具体物等との対応関係を示すものである。 In addition, the code | symbol in the bracket | parenthesis in the said and the claim shows the correspondence of the term described in the claim, and the concrete thing etc. which illustrate the said term described in embodiment mentioned later. .

本発明の実施形態に係るレセプタクル１および送信機２がボデー３に固定された状態を示す斜視図である。1 is a perspective view showing a state in which a receptacle 1 and a transmitter 2 according to an embodiment of the present invention are fixed to a body 3. FIG. レセプタクル１、送信機２、ボデー３の平面図である。2 is a plan view of a receptacle 1, a transmitter 2, and a body 3. FIG. 図２のＩＩＩ−ＩＩＩ断面図である。It is III-III sectional drawing of FIG. 図３の一部拡大図である。FIG. 4 is a partially enlarged view of FIG. 3. 送信機２の製造工程を示す図である（図４と同じ断面）。It is a figure which shows the manufacturing process of the transmitter 2 (the same cross section as FIG. 4). 送信機２の製造工程を示す図である（図４と同じ断面）。It is a figure which shows the manufacturing process of the transmitter 2 (the same cross section as FIG. 4). 送信機２の製造工程を示す図である（図４と同じ断面）。It is a figure which shows the manufacturing process of the transmitter 2 (the same cross section as FIG. 4). 送信機２の製造工程を示す図である（図４と同じ断面）。It is a figure which shows the manufacturing process of the transmitter 2 (the same cross section as FIG. 4). 送信機２の製造工程を示す図である（図４と同じ断面）。It is a figure which shows the manufacturing process of the transmitter 2 (the same cross section as FIG. 4).

以下、本発明の一実施形態について、図１〜図５を引用して説明する。なお、本実施形態において、上、下と表すのは、図３、図４における紙面の上、下に相当し、製品の実際の鉛直方向上下と一致するとは限らない。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the terms “up” and “down” correspond to the top and bottom of the paper surface in FIGS. 3 and 4 and do not necessarily coincide with the actual vertical direction of the product.

（構成）
図１に示すレセプタクル１および送信機２は、燃料電池車に搭載されている。燃料電池車は、水素燃料と酸素との化学反応によって生成される電気エネルギーを用いて走行用モータを駆動して走行する。より具体的には、レセプタクル１および送信機２は、燃料電池車のボデー３に固定されている。これらレセプタクル１および送信機２は、燃料電池車が水素ステーションから水素燃料の供給を受けるためのシステムを構成する。 (Constitution)
A receptacle 1 and a transmitter 2 shown in FIG. 1 are mounted on a fuel cell vehicle. The fuel cell vehicle travels by driving a traveling motor using electrical energy generated by a chemical reaction between hydrogen fuel and oxygen. More specifically, the receptacle 1 and the transmitter 2 are fixed to the body 3 of the fuel cell vehicle. The receptacle 1 and the transmitter 2 constitute a system for the fuel cell vehicle to receive supply of hydrogen fuel from the hydrogen station.

レセプタクル１は、円筒形状の筒部１ａと、筒部１ａの外周面から突出する板形状のフランジ部１ｂとを備えている。円筒形状の筒部１ａおよびフランジ部１ｂは、一体に形成され、水素脆化に強い材料（例えばＳＵＳ３１６Ｌ）を用いて形成されている。 The receptacle 1 includes a cylindrical tube portion 1a and a plate-shaped flange portion 1b protruding from the outer peripheral surface of the tube portion 1a. The cylindrical cylindrical portion 1a and the flange portion 1b are integrally formed and formed using a material that is resistant to hydrogen embrittlement (for example, SUS316L).

燃料電池車の外部に設置された水素ステーション（図示せず）の充填ノズル（図示せず）は、この筒部１ａの先端１ｃおよびその周囲に接続される。充填ノズルが筒部１ａの先端１ｃおよびその周囲に接続された状態で、充填ノズルから筒部１ａに水素燃料が供給され、この水素燃料が筒部１ａの内壁に囲まれた通路１ｅ内に流入する。筒部１ａの根元１ｄにある底面には、配管４の一端が接続されていると共に穴が開けられており、この穴を介して、通路１ｅと配管４の内部空間が連通している。したがって、通路１ｅに流入した水素燃料は、上記穴を介して配管４に流入し、その後、配管４の他端から図示しない水素タンクに流入する。 A filling nozzle (not shown) of a hydrogen station (not shown) installed outside the fuel cell vehicle is connected to the tip 1c of the cylindrical portion 1a and its periphery. With the filling nozzle connected to the tip 1c of the cylindrical portion 1a and the periphery thereof, hydrogen fuel is supplied from the filling nozzle to the cylindrical portion 1a, and this hydrogen fuel flows into the passage 1e surrounded by the inner wall of the cylindrical portion 1a. To do. One end of the pipe 4 is connected to the bottom surface at the base 1d of the cylindrical portion 1a and a hole is formed, and the passage 1e and the internal space of the pipe 4 communicate with each other through the hole. Accordingly, the hydrogen fuel flowing into the passage 1e flows into the pipe 4 through the hole, and then flows into the hydrogen tank (not shown) from the other end of the pipe 4.

フランジ部１ｂには、４つのネジ穴が形成され、図３に示すように、これらネジ穴をボデー３の４つのネジ穴と位置合わせを行い、その上でボルトを各ネジ穴に挿入することで、フランジ部１ｂをボデー３に固定する。これにより、レセプタクル１のボデー３に対する位置決めおよび固定が実現する。 Four screw holes are formed in the flange portion 1b, and as shown in FIG. 3, these screw holes are aligned with the four screw holes of the body 3, and then bolts are inserted into the respective screw holes. Then, the flange portion 1 b is fixed to the body 3. Thereby, positioning and fixing with respect to the body 3 of the receptacle 1 are implement | achieved.

送信機２は、カバー部２１、ベース部２２、固定部２３、基板２４、ＬＥＤ２５ａ〜２５ｄ、コネクタ部２６、および端子２７ａ、２７ｂを備えている。カバー部２１とベース部２２は、基板２４およびＬＥＤ２５ａ〜２５ｄを収容するケーシングである。 The transmitter 2 includes a cover part 21, a base part 22, a fixing part 23, a substrate 24, LEDs 25a to 25d, a connector part 26, and terminals 27a and 27b. The cover part 21 and the base part 22 are casings that house the substrate 24 and the LEDs 25a to 25d.

カバー部２１は、基板２４およびＬＥＤ２５ａ〜２５ｄの上側および側方を覆う部材であり、ＬＥＤ２５ａ〜２５ｄが放出した赤外線および後述する近赤外線レーザーを透過させる材料から成る。具体的には、カバー部２１は、赤外線を２０％以上透過させる光透過性樹脂（例えば光透過性のＰＢＴ樹脂）を用いることができる。 The cover portion 21 is a member that covers the substrate 24 and the upper side and the side of the LEDs 25a to 25d, and is made of a material that transmits infrared rays emitted from the LEDs 25a to 25d and a near infrared laser described later. Specifically, the cover portion 21 can use a light-transmitting resin (for example, a light-transmitting PBT resin) that transmits infrared light by 20% or more.

このカバー部２１は、天面部２１ａ、側壁部２１ｂ、およびカバー外縁部２１ｃを備えている。天面部２１ａは、カバー部２１の上端を構成し、基板２４およびＬＥＤ２５ａ〜２５ｄの上側を覆う平板形状の板部材であり、その法線の方向は上下方向にほぼ一致する。すなわち、当該法線は筒部１ａの中心軸（長手方向の軸）１０と平行になる。 The cover portion 21 includes a top surface portion 21a, a side wall portion 21b, and a cover outer edge portion 21c. The top surface portion 21a is a flat plate member that constitutes the upper end of the cover portion 21 and covers the upper side of the substrate 24 and the LEDs 25a to 25d, and the direction of the normal line thereof substantially coincides with the vertical direction. That is, the normal line is parallel to the central axis (longitudinal axis) 10 of the cylindrical portion 1a.

側壁部２１ｂは、天面部２１ａの全周において天面部２１ａと一体に接続し、そこからほぼ下方向に伸びて、基板２４およびＬＥＤ２５ａ〜２５ｄの側方の全周を覆う板部材である。カバー外縁部２１ｃは、側壁部２１ｂの下端の全周において側壁部２１ｂと一体に接続し、そこから斜め下方向に伸びるフランジ形状の板部材である。 The side wall portion 21b is a plate member that is integrally connected to the top surface portion 21a on the entire periphery of the top surface portion 21a, extends substantially downward from the top surface portion 21a, and covers the entire periphery on the sides of the substrate 24 and the LEDs 25a to 25d. The cover outer edge portion 21c is a flange-shaped plate member that is integrally connected to the side wall portion 21b on the entire periphery of the lower end of the side wall portion 21b and extends obliquely downward therefrom.

ベース部２２は、基板２４およびＬＥＤ２５ａ〜２５ｄの下側（筒部１ａの根元１ｄ側）を覆う部材である。このベース部２２は、近赤外線レーザーを受けると、これを吸収して発熱および溶融する光吸収性樹脂（例えば光吸収性のＰＢＴ樹脂）から成る。 The base portion 22 is a member that covers the substrate 24 and the lower side of the LEDs 25a to 25d (the root 1d side of the tube portion 1a). The base portion 22 is made of a light-absorbing resin (for example, a light-absorbing PBT resin) that absorbs the near-infrared laser and generates heat and melts.

このベース部２２は、底板部２２ａ、位置決め部２２ｂ、ベース外縁部２２ｃを有している。底板部２２ａは、基板２４およびＬＥＤ２５ａ〜２５ｄの下側を覆うほぼ平板形状の部材であり、その法線は上下方向にほぼ一致する。底板部２２ａには、金属製の端子２７ａ、２７ｂが、底板部２２ａを上下に貫くように、インサート成型等によって埋め込まれている。 The base portion 22 includes a bottom plate portion 22a, a positioning portion 22b, and a base outer edge portion 22c. The bottom plate portion 22a is a substantially flat plate-like member that covers the lower side of the substrate 24 and the LEDs 25a to 25d, and the normal line thereof substantially coincides with the vertical direction. Metal terminals 27a and 27b are embedded in the bottom plate portion 22a by insert molding or the like so as to penetrate the bottom plate portion 22a up and down.

端子２７ａ、２７ｂは、基板２４上に実装されたＬＥＤ２５ａ〜２５ｄおよびＬＥＤ２５ａ〜２５ｄの発光を制御する回路（図示せず）に、上側の端部において接続されており、下側の端部においてコネクタ部２６内に突出している。コネクタ部２６はベース部２２の底板部２２ａの底面において、底板部２２ａに一体に接続されている。このコネクタ部２６が図示しないＥＣＵに組み付けられることで、当該ＥＣＵと端子２７ａ、２７ｂとが電気的に接続され、ＥＣＵによってＬＥＤ２５ａ〜２５ｄの点灯、消灯の制御が可能となる。 The terminals 27a and 27b are connected to the circuits (not shown) for controlling the light emission of the LEDs 25a to 25d and the LEDs 25a to 25d mounted on the substrate 24 at the upper end, and are connected to the connectors at the lower end. Projecting into the portion 26. The connector portion 26 is integrally connected to the bottom plate portion 22 a at the bottom surface of the bottom plate portion 22 a of the base portion 22. By assembling this connector portion 26 to an ECU (not shown), the ECU and the terminals 27a and 27b are electrically connected, and the ECU can control the lighting and extinguishing of the LEDs 25a to 25d.

例えば、当該ＥＣＵは、水素タンク内の状態（例えば、温度、圧力）を検出するセンサから入力された検出信号に基づいて、水素タンク内の当該状態を特定し、特定した当該状態の情報がＩｒＤＡの規格に従ってエンコードされた点滅タイミングのパターンで、ＬＥＤ２５ａ〜２５ｄの点滅を制御する。 For example, the ECU specifies the state in the hydrogen tank based on a detection signal input from a sensor that detects a state (for example, temperature, pressure) in the hydrogen tank, and the information on the specified state is IrDA. The blinking of the LEDs 25a to 25d is controlled by the blinking timing pattern encoded in accordance with the standard.

なお、上述した水素ステーションの充填ノズルには、図示しない受信装置が取り付けられている。この受信装置は、赤外線受光素子を備えている。充填ノズルが筒部１ａの先端１ｃおよびその周囲に接続された状態では、当該受信装置と送信機２とが近接し、赤外線受光素子が、ＬＥＤ２５ａ〜２５ｄから放出されてカバー部２１を透過した赤外光を受光し、当該受信装置は、当該赤外線受光素子が受光した赤外線の強度に応じた信号を出力する。充電ステーションは、この受信装置が出力した信号に基づいて、水素タンクの状態（温度、圧力等）を特定し、特定した状態に応じて、当該ノズルから供給する水素の量を調整する。 Note that a receiving device (not shown) is attached to the filling nozzle of the hydrogen station described above. This receiving apparatus includes an infrared light receiving element. In a state where the filling nozzle is connected to the tip 1c of the cylindrical portion 1a and its periphery, the receiving device and the transmitter 2 are close to each other, and the infrared light receiving element is emitted from the LEDs 25a to 25d and transmitted through the cover portion 21 The external light is received, and the receiving device outputs a signal corresponding to the intensity of the infrared light received by the infrared light receiving element. The charging station specifies the state (temperature, pressure, etc.) of the hydrogen tank based on the signal output from the receiving device, and adjusts the amount of hydrogen supplied from the nozzle according to the specified state.

位置決め部２２ｂは、底板部２２ａの全周において底板部２２ａと一体に接続し、そこからほぼ上方向に伸びた板部材である。位置決め部２２ｂの外周面は、カバー部２１の側壁部２１ｂの内周面２１ｂｒの下部と当接することで、カバー部２１の位置を拘束する。 The positioning portion 22b is a plate member that is integrally connected to the bottom plate portion 22a on the entire circumference of the bottom plate portion 22a and extends substantially upward therefrom. The outer peripheral surface of the positioning portion 22b is in contact with the lower portion of the inner peripheral surface 21br of the side wall portion 21b of the cover portion 21, thereby restraining the position of the cover portion 21.

ベース外縁部２２ｃは、位置決め部２２ｂの下側の全周において位置決め部２２ｂと一体に接続し、そこから筒部１ａの方向に伸びるフランジ形状の板部材である。ベース外縁部２２ｃの底面は、その法線方向が上下方向とほぼ一致している。ベース外縁部２２ｃのカバー外縁部２１ｃｓは、カバー外縁部２１ｃの底面２１ｃｒと対向しており、一部はレーザー溶着によって当該底面２１ｃｒと接合している。 The base outer edge 22c is a flange-shaped plate member that is integrally connected to the positioning portion 22b on the entire lower side of the positioning portion 22b and extends in the direction of the cylindrical portion 1a therefrom. The normal direction of the bottom surface of the base outer edge portion 22c substantially coincides with the vertical direction. The cover outer edge portion 21cs of the base outer edge portion 22c faces the bottom surface 21cr of the cover outer edge portion 21c, and a part thereof is joined to the bottom surface 21cr by laser welding.

なお、図１、図２に示すように、カバー部２１およびベース部２２から成るケーシングは、筒部１ａの外周とより多くの位置で近接するよう、筒部１ａの外周に沿って筒部１ａの中心軸１０を中心とする円周方向に伸びた形状となっている。つまり、図２のように上から見れば、軸１０を中心とする２つの円弧と２つの半径によって囲まれた領域と同等の形状となる。 As shown in FIGS. 1 and 2, the casing made up of the cover portion 21 and the base portion 22 has a cylindrical portion 1a along the outer periphery of the cylindrical portion 1a so as to be closer to the outer periphery of the cylindrical portion 1a at more positions. The shape extends in the circumferential direction around the central axis 10. That is, when viewed from the top as shown in FIG. 2, the shape is equivalent to a region surrounded by two arcs and two radii centered on the axis 10.

したがって、カバー外縁部２１ｃおよびベース外縁部２２ｃの全周のうち、筒部１ａに近い側（すなわち、ＬＥＤ２５ａ〜２５ｄと筒部１ａの間にある側）の部分は、軸１０を中心とする円弧形状に伸びている。このようにすることで、複数個のＬＥＤ２５ａ〜２５ｄのすべてを、互いに邪魔することなく筒部１ａの軸１０から等距離かつ筒部１ａにできる限り近づけて配置することができる。 Accordingly, a portion of the entire circumference of the cover outer edge portion 21c and the base outer edge portion 22c on the side close to the tube portion 1a (that is, the side between the LEDs 25a to 25d and the tube portion 1a) is an arc centered on the shaft 10. It extends in shape. By doing in this way, all the some LED25a-25d can be arrange | positioned as close as possible to the cylinder part 1a at equal distance from the axis | shaft 10 of the cylinder part 1a, without interfering with each other.

具体的には、ＬＥＤ２５ａ〜２５ｄは、図２に示すように、筒部１ａの軸１０から等距離かつ軸１０を中心とする周方向に等間隔に配置されている。また、図２〜図４に示すように、ＬＥＤ２５ａは、できるだけ筒部１ａに近づけるよう、ケーシング（カバー部２１およびベース部２２）内においても筒部１ａ寄りの位置に配置されている。 Specifically, as shown in FIG. 2, the LEDs 25 a to 25 d are arranged at an equal distance from the shaft 10 of the cylindrical portion 1 a and at equal intervals in the circumferential direction around the shaft 10. Moreover, as shown in FIGS. 2-4, LED25a is arrange | positioned in the position close | similar to the cylinder part 1a also in a casing (the cover part 21 and the base part 22) so that it may be close to the cylinder part 1a as much as possible.

なお、送信機２がＬＥＤ２５ａ〜２５ｄを複数個有するのは、送信機２から放出される赤外光の強度を高めるためと、送信機２から放出される赤外光の到達範囲を軸１０を中心とする周方向に広げるためである。 The transmitter 2 has a plurality of LEDs 25a to 25d in order to increase the intensity of infrared light emitted from the transmitter 2 and to determine the reach range of infrared light emitted from the transmitter 2 on the axis 10. This is for spreading in the circumferential direction as the center.

固定部２３は、ベース部２２と一体に形成され、送信機２をボデー３に固定するための板形状の部材である。より具体的には、固定部２３は、ベース外縁部２２ｃのうち、軸１０を中心とする外側（すなわち、ＬＥＤ２５ａ〜２５ｄから見て筒部１ａと反対側にある側）の円弧部分において、ベース外縁部２２ｃと一体に接続し、そこから軸１０を中心とする径方向外側に伸びている。 The fixing portion 23 is a plate-shaped member that is formed integrally with the base portion 22 and that fixes the transmitter 2 to the body 3. More specifically, the fixing portion 23 is a base portion of an arc portion on the outer side (that is, the side opposite to the tube portion 1a when viewed from the LEDs 25a to 25d) of the base outer edge portion 22c with the shaft 10 as the center. It connects with the outer edge part 22c integrally, and is extended in the radial direction centering on the axis | shaft 10 from there.

また、固定部２３には、ネジ穴２３ａが形成されている。図３に示すようにネジ穴２３ａをフランジ部１ｂおよびボデー３のネジ穴（図示せず）と位置合わせを行い、その上でボルトＢをネジ穴２３ａに挿入することで、固定部２３をフランジ部１ｂおよびボデー３に固定する。これにより、送信機２のボデー３に対する位置決めおよび固定が実現する。 The fixing portion 23 is formed with a screw hole 23a. As shown in FIG. 3, the screw hole 23a is aligned with the flange portion 1b and the screw hole (not shown) of the body 3, and then the bolt B is inserted into the screw hole 23a, thereby fixing the fixing portion 23 to the flange. It fixes to the part 1b and the body 3. Thereby, positioning and fixing with respect to the body 3 of the transmitter 2 are realized.

ここで、カバー外縁部２１ｃとベース外縁部２２ｃの形状および配置について、より詳細に説明する。まず、カバー部２１とベース部２２は、レーザー溶着によって互いに接合した結果、カバー部２１とベース部２２の全周（すなわち、天面部２１ａ、位置決め部２２ｂの周りを廻る全周）において、溶着面が形成される。以下、図４を引用して、溶着面のうち、ＬＥＤ２５ａよりも筒部１ａ側にある筒部側接合面２９の断面形状について説明するが、他のすべての溶着面の断面形状も筒部側接合面２９と同じである。 Here, the shape and arrangement of the cover outer edge portion 21c and the base outer edge portion 22c will be described in more detail. First, as a result of joining the cover portion 21 and the base portion 22 together by laser welding, the welding surface is formed on the entire circumference of the cover portion 21 and the base portion 22 (that is, the entire circumference around the top surface portion 21a and the positioning portion 22b). Is formed. Hereinafter, with reference to FIG. 4, the cross-sectional shape of the tube-side joint surface 29 on the tube portion 1 a side of the LED 25 a among the weld surfaces will be described, but the cross-sectional shapes of all other weld surfaces are also the tube-side side. The same as the bonding surface 29.

この筒部側接合面２９は、カバー外縁部２１ｃの上面２１ｃｓのうち、筒部側接合面２９以外の部分よりも、僅かに盛り上がっている。上面２１ｃｓのうち筒部側接合面２９以外の部分とは、具体的には、筒部側接合面２９よりも筒部１ａに近い部分と、筒部側接合面２９から見て筒部１ａとは反対側の部分（筒部側接合面２９よりもＬＥＤに近い部分）である。この盛り上がった部分は、レーザー溶着によってカバー外縁部２１ｃの一部（後述する突出部２２ｄ。図５参照。）が溶融して変形したものである。したがって、筒部側接合面２９は、カバー外縁部２１ｃの底面２１ｃｒにおける接合先に密着する略平面形状となっている。 The cylinder side joining surface 29 is slightly raised from the portion of the upper surface 21cs of the cover outer edge part 21c other than the cylinder side joining surface 29. Specifically, the portion of the upper surface 21 cs other than the cylinder-side joining surface 29 is a portion closer to the cylinder 1 a than the cylinder-side joining surface 29, and the cylinder 1 a as viewed from the cylinder-side joining surface 29. Is a portion on the opposite side (portion closer to the LED than the tube side joining surface 29). The raised portion is a part of the cover outer edge portion 21c (projection portion 22d described later, see FIG. 5) melted and deformed by laser welding. Therefore, the cylinder side joining surface 29 has a substantially planar shape that is in close contact with the joining destination on the bottom surface 21cr of the cover outer edge portion 21c.

そして、この筒部側接合面２９のすべて（あるいは他の例として一部）の位置の法線１１は、送信機２がボデー３に固定されて筒部１ａの近傍に配置されたとき、筒部１ｃの根元１ｄから先端１ｃに向かうにつれて、筒部１ａの軸１０に近づくように、筒部の軸に対して角度θ（ただし０°＜θ＜９０°）で傾斜している。また、別の観点では、筒部側接合面２９は、送信機２がボデー３に固定されて筒部１ａの近傍に配置されたとき、筒部１ａの軸１０に直交する平面に対して、角度θで傾斜している。この角度θは、例えば１０°以上３０°以下であり、特に２０°であってもよい。 And the normal line 11 of the position of all (or a part as another example) of this cylinder side joint surface 29 is a cylinder when the transmitter 2 is fixed to the body 3 and arranged in the vicinity of the cylinder 1a. As it goes from the root 1d of the part 1c toward the tip 1c, it is inclined at an angle θ (where 0 ° <θ <90 °) with respect to the axis of the cylinder part so as to approach the axis 10 of the cylinder part 1a. Moreover, in another viewpoint, when the transmitter 2 is fixed to the body 3 and disposed in the vicinity of the cylinder part 1a, the cylinder-side joining surface 29 is in a plane perpendicular to the axis 10 of the cylinder part 1a. It is inclined at an angle θ. This angle θ is, for example, not less than 10 ° and not more than 30 °, and may be particularly 20 °.

このようになっていることで、筒部側接合面２９の法線１１が筒部１ａの軸１０に対して平行な場合に比べて、すなわち、筒部側接合面２９が軸１０に対して直交する場合に比べて、１ａとＬＥＤの間においてカバー外縁部２１ｃとベース外縁部２２ｃの接合面を、軸方向１０を中心とする径方向斜め方向、広く確保することができる。 In this way, compared to the case where the normal line 11 of the cylinder part side joining surface 29 is parallel to the axis 10 of the cylinder part 1 a, that is, the cylinder part side joining surface 29 is relative to the axis 10. Compared to the case of being orthogonal, the joint surface of the cover outer edge portion 21c and the base outer edge portion 22c can be widely secured between the LED 1a and the LED in a diagonal direction in the radial direction with the axial direction 10 as the center.

例えばＳＡＥＪ２７９９で規定された要件は、筒部１ａはφ３２ｍｍの円筒であり、ＬＥＤ２５ａ〜２５ｄは筒部１ａの中心軸１０（重点口中心）から２２±４ｍｍの範囲内に配置するというものになっている。送信機２を筒部１ａの近傍に取り付けたときにこれが満たされるように送信機２を製造した場合、筒部１ａの外壁とＬＥＤ２５ａ〜２５ｄとの間の距離は最大でも２６−φ３２／２＝１０ｍｍと狭くなってしまい、その間隙に、ＬＥＤ２５ａ〜２５ｄ、ケーシング（カバー部２１およびベース部２２）の肉厚、筒部１ａ×ケーシングとのクリアランスを設ける必要がある。また、ケーシング内に水が侵入しない防水構造とする必要がある。このように、側壁部２１ｂと筒部１ａとの間のスペースが僅かしか無い場合に、本実施形態の上記効果は顕著になる。 For example, the requirement specified in SAE J2799 is that the cylindrical portion 1a is a cylinder having a diameter of 32 mm, and the LEDs 25a to 25d are disposed within a range of 22 ± 4 mm from the central axis 10 (the center of the key opening) of the cylindrical portion 1a. ing. When the transmitter 2 is manufactured so that this is satisfied when the transmitter 2 is attached in the vicinity of the cylindrical portion 1a, the distance between the outer wall of the cylindrical portion 1a and the LEDs 25a to 25d is 26−φ32 / 2 = The gap between the LED 25a to 25d, the thickness of the casing (the cover portion 21 and the base portion 22), and the clearance between the cylindrical portion 1a and the casing must be provided in the gap. Further, it is necessary to provide a waterproof structure in which water does not enter the casing. Thus, when there is little space between the side wall part 21b and the cylinder part 1a, the said effect of this embodiment becomes remarkable.

また、カバー外縁部２１ｃの上面２１ｃｓのうち筒部側接合面２９以外の部分（すなわち、筒部側接合面２９よりも筒部１ａに近い部分と、筒部側接合面２９から見て筒部１ａとは反対側の部分）も、その全位置（あるいは他の例としては一部の位置）における法線方向は、筒部側接合面２９の法線１１の方向とほぼ平行になっている。したがって、上面２１ｃｓのうち筒部側接合面２９以外の部分とカバー外縁部２１ｃの底面２１ｃｒとの間には、僅かな隙間がある。 Further, a portion of the upper surface 21cs of the cover outer edge portion 21c other than the tubular portion side joining surface 29 (that is, a portion closer to the tubular portion 1a than the tubular portion side joining surface 29 and a tubular portion as viewed from the tubular portion side joining surface 29). The normal direction at the entire position (or a part of the position as another example) of the portion opposite to 1a is also substantially parallel to the direction of the normal line 11 of the tube side joining surface 29. . Therefore, there is a slight gap between the portion of the upper surface 21cs other than the cylinder side joining surface 29 and the bottom surface 21cr of the cover outer edge portion 21c.

また、カバー外縁部２１ｃの上面２１ｃｓ（ベース部２２と反対側を向く面）のうち、天面部２１ａおよびＬＥＤよりも筒部１ａに近い部分は、その全位置（あるいは他の例としては一部の位置）の法線方向が、上記法線１１の方向とほぼ平行になっている。したがって当然に、上面２１ｃｓ天面部２１ａおよびＬＥＤよりも筒部１ａに近い部分であり、かつ、筒部側接合面２９よりも筒部１ａに近い部分は、その全位置（あるいは他の例としては一部の位置）の法線方向が、上記法線１１の方向とほぼ平行になっている。 Of the upper surface 21cs of the cover outer edge portion 21c (the surface facing the side opposite to the base portion 22), the top surface portion 21a and the portion closer to the tube portion 1a than the LED are all located (or partially as another example). The normal direction of (position) is substantially parallel to the direction of the normal 11. Therefore, as a matter of course, the portion closer to the cylindrical portion 1a than the upper surface 21cs top surface portion 21a and the LED, and the portion closer to the cylindrical portion 1a than the cylindrical portion-side joining surface 29 is in its entire position (or as another example, The normal direction of some positions is substantially parallel to the direction of the normal 11.

つまり、上面２１ｃｓのうち、天面部２１ａおよびＬＥＤよりも筒部１ａに近い部分は、その全位置（あるいは他の例としては一部の位置）の法線が、送信機２がボデー３に固定されて筒部１ａの近傍に配置されたとき、筒部１ｃの根元１ｄから先端１ｃに向かうにつれて、筒部１ａの軸１０に近づくように、筒部の軸に対して角度θで傾斜している。このようになっていることで、後述するように、カバー部２１とベース部２２を接合するときの押さえ代を、軸方向１０を中心とする径方向に、広く確保することができる。 In other words, in the upper surface 21 cs, the normal line of the entire position (or a part of the position as another example) is fixed to the body 3 in the portion closer to the cylinder portion 1 a than the top surface portion 21 a and the LED. When it is arranged in the vicinity of the cylinder part 1a, it is inclined at an angle θ with respect to the axis of the cylinder part so as to approach the shaft 10 of the cylinder part 1a as it goes from the root 1d of the cylinder part 1c to the tip 1c. Yes. In this way, as will be described later, it is possible to ensure a wide press margin when joining the cover portion 21 and the base portion 22 in the radial direction centering on the axial direction 10.

また、図４に示すように、側壁部２１ｂの外周面２１ｂｓ（筒部１ａ側の面）は、送信機２がボデー３に固定されて筒部１ａの近傍に配置されたとき、軸方向１０に対して僅かな角度φ（例えば、０°より大きく５°より小さい角度）だけ、筒部１ｃの根元１ｄから先端１ｃに向かうにつれて筒部１ａの軸１０から離れるよう、傾斜している。このようになっていることで、後述するレーザー溶着の際に、側壁部２１ｂが筋赤外線レーザーと干渉してしまう可能性が低減される。 Further, as shown in FIG. 4, the outer peripheral surface 21bs (surface on the cylinder part 1a side) of the side wall part 21b is 10 in the axial direction when the transmitter 2 is fixed to the body 3 and arranged in the vicinity of the cylinder part 1a. Is inclined by a slight angle φ (for example, an angle larger than 0 ° and smaller than 5 °) away from the axis 10 of the cylindrical portion 1a toward the tip 1c from the root 1d of the cylindrical portion 1c. By doing in this way, the possibility that the side wall part 21b will interfere with a muscle infrared laser in the case of the laser welding mentioned later is reduced.

（製造方法）
次に、上記のような構成の送信機２の製造方法について説明する。送信機２は、レセプタクル１とは別のラインで製造され、製造後に上記の通りフランジ部１ｂおよびボデー３に固定されることで、筒部１ａの近傍に配置される。以下の工程は、一部を人の手で行って残りを製造会で自動的に行っても良いし、全体を製造機械で自動的に行ってもよい。 (Production method)
Next, a method for manufacturing the transmitter 2 having the above configuration will be described. The transmitter 2 is manufactured on a separate line from the receptacle 1, and is disposed in the vicinity of the cylindrical portion 1a by being fixed to the flange portion 1b and the body 3 as described above after manufacturing. The following steps may be performed partly by a human hand and the rest may be automatically performed by a manufacturing association, or may be performed automatically by a manufacturing machine.

まず、第１の工程では、カバー部２１、ベース部２２、コネクタ部２６、端子２７を製造し、基板２４にＬＥＤ２５ａ〜２５ｄ等を実装し、ベース部２２に埋め込まれている端子２７に基板２４を接続する。これにより、カバー部２１、ベース部２２、ＬＥＤ２５ａ〜２５ｄ、コネクタ部２６、端子２７が用意され、これにより、図５に示すように、底板部２２ａの上方に基板２４、ＬＥＤ２５ａ〜２５ｄが配置される。 First, in the first step, the cover part 21, the base part 22, the connector part 26, and the terminal 27 are manufactured, the LEDs 25 a to 25 d and the like are mounted on the board 24, and the board 24 is mounted on the terminal 27 embedded in the base part 22. Connect. As a result, the cover portion 21, the base portion 22, the LEDs 25a to 25d, the connector portion 26, and the terminals 27 are prepared. As a result, the substrate 24 and the LEDs 25a to 25d are disposed above the bottom plate portion 22a as shown in FIG. The

カバー部２１については、カバー部２１とベース部２２を溶着で接合する前と後で形状は同じであるが、ベース部２２については、カバー部２１とベース部２２を溶着で接合する前と後で形状が異なる。 The shape of the cover portion 21 is the same before and after the cover portion 21 and the base portion 22 are joined by welding, but the shape of the base portion 22 is before and after the cover portion 21 and the base portion 22 are joined by welding. The shape is different.

具体的には、ベース部２２の位置決め部２２ｂの外側の全周かつ、ベース外縁部２２ｃの上面２２ｃｓにおいて、図５に示すように、突出部２２ｄがベース外縁部２２ｃから斜め上方向に突出している。突出部２２ｄは、ベース外縁部２２ｃと一体に接続されている。 Specifically, as shown in FIG. 5, the protruding portion 22d protrudes obliquely upward from the base outer edge portion 22c on the entire outer periphery of the positioning portion 22b of the base portion 22 and on the upper surface 22cs of the base outer edge portion 22c. Yes. The protruding portion 22d is integrally connected to the base outer edge portion 22c.

図５では、突出部２２ｄのうちカバー部２１およびＬＥＤよりも筒部１ａに近い部分の断面形状を表しているが、突出部２２ｄの他のすべての位置の断面形状も同じである。突出部２２ｄの突出方向１３は、近傍のベース外縁部２２ｃの上面２２ｃｓの法線方向（図４の法線１１の方向）と同じであるが、必ずしも同じでなくともよい。 In FIG. 5, the cross-sectional shape of the portion of the protruding portion 22d that is closer to the cylindrical portion 1a than the cover portion 21 and the LED is shown, but the cross-sectional shapes of all other positions of the protruding portion 22d are the same. The protruding direction 13 of the protruding portion 22d is the same as the normal direction of the upper surface 22cs of the adjacent base outer edge portion 22c (the direction of the normal line 11 in FIG. 4), but is not necessarily the same.

次に、第２の工程では、図６に示すように、カバー部２１をベース部２２の上にかぶせる。このとき、位置決め部２２ｂをガイドとして用い、側壁部２１ｂの内周面２１ｂｒが位置決め部２２ｂの外周に位置するようにカバー部２１を配置することで、カバー部２１の位置決めが行われる。これにより、図６に示すように、カバー外縁部２１ｃの底面２１ｃｒが、突出部２２ｄの先端に当接する。 Next, in the second step, the cover portion 21 is placed on the base portion 22 as shown in FIG. At this time, the positioning of the cover portion 21 is performed by using the positioning portion 22b as a guide and arranging the cover portion 21 so that the inner peripheral surface 21br of the side wall portion 21b is positioned on the outer periphery of the positioning portion 22b. Thereby, as shown in FIG. 6, the bottom surface 21cr of the cover outer edge portion 21c comes into contact with the tip of the protruding portion 22d.

次に、第３の工程では、図７に示すように、押さえ治具３０をカバー外縁部２１ｃの上面２１ｃｓの全周の外縁部（後の工程で発生する接合面よりも外周側）に押しつける。これにより、カバー外縁部２１ｃと突出部２２ｄの接触を強固にすると共に、カバー部２１がベース部２２に対して動かないようにする。 Next, in the third step, as shown in FIG. 7, the pressing jig 30 is pressed against the outer peripheral portion of the entire upper surface 21 cs of the cover outer edge portion 21 c (outer peripheral side than the joining surface generated in the subsequent step). . Accordingly, the contact between the cover outer edge portion 21 c and the protruding portion 22 d is strengthened, and the cover portion 21 is prevented from moving with respect to the base portion 22.

既に説明したように、送信機２がボデー３に固定されて筒部１ａの近傍に配置されたとき、上面２１ｃｓのうち、天面部２１ａおよびＬＥＤよりも筒部１ａに近い部分は、その全位置（あるいは他の例としては一部の位置）の法線が、筒部１ｃの根元１ｄから先端１ｃに向かうにつれて、筒部１ａの軸１０に近づくように、筒部の軸に対して角度θで傾斜している。したがって、上面２１ｃｓが軸１０に対して垂直である場合に比べ、この第３の工程で上面２１ｃｓのうち押さえ治具３０が当たる部分（すなわち押さえ代）を、軸方向１０を中心とする径方向に、広く確保することができる。 As already described, when the transmitter 2 is fixed to the body 3 and disposed in the vicinity of the cylindrical portion 1a, the portion of the upper surface 21cs that is closer to the cylindrical portion 1a than the top surface portion 21a and the LED An angle θ with respect to the axis of the cylinder portion so that the normal of (or some positions as another example) approaches the axis 10 of the cylinder portion 1a as it goes from the root 1d of the cylinder portion 1c toward the tip 1c. It is inclined at. Therefore, compared with the case where the upper surface 21cs is perpendicular to the shaft 10, the portion of the upper surface 21cs that the pressing jig 30 contacts in this third step (that is, the pressing allowance) is radial with the axial direction 10 as the center. In addition, it can be secured widely.

次に、第４の工程では、図８に示すように、レーザー溶着のため、波長０．７〜２．５μｍの近赤外線レーザー５０を、カバー外縁部２１ｃ越しに突出部２２ｄに照射する。照射される近赤外線レーザー５０は角度α（例えば４．４°の）で収束するビームとなっている。 Next, in a 4th process, as shown in FIG. 8, the near infrared laser 50 with a wavelength of 0.7-2.5 micrometers is irradiated to the protrusion part 22d through the cover outer edge part 21c for laser welding. The irradiated near-infrared laser 50 is a beam that converges at an angle α (for example, 4.4 °).

突出部２２ｄに近赤外線レーザー５０が当たると、突出部２２ｄがカバー外縁部２１ｃと当接する面が付近で発熱して、その熱によって突出部２２ｄおよびカバー外縁部２１ｃが溶融する。このとき、押さえ治具３０がカバー外縁部２１ｃをベース外縁部２２ｃの方向に押さえ続けているので、溶融した突出部２２ｄが変形し、カバー外縁部２１ｃとベース外縁部２２ｃの間隙が狭くなっていく。 When the near-infrared laser 50 hits the protrusion 22d, the surface where the protrusion 22d contacts the cover outer edge 21c generates heat in the vicinity, and the protrusion 22d and the cover outer edge 21c are melted by the heat. At this time, since the holding jig 30 keeps pressing the cover outer edge portion 21c in the direction of the base outer edge portion 22c, the melted protruding portion 22d is deformed, and the gap between the cover outer edge portion 21c and the base outer edge portion 22c is narrowed. Go.

この第４の工程では、近赤外線レーザー５０は、側壁部２１ｂと干渉せず、かつ、突出部２２ｄが偏りなく溶融するよう、突出部２２ｄの突出方向１３と、近赤外線レーザー５０の光軸方向５１との成す角が５°未満となるようにする。したがって、近赤外線レーザー５０の光軸方向５１は、送信機２が筒部１ａの近傍に配置されたとき、筒部１ａの根元１ｄから先端１ｃに向かうにつれて、筒部１ａの軸１０に近づくように、筒部１ａの軸１０に対して傾斜している。また、近赤外線レーザー５０の光軸方向５１は、近赤外線レーザー５０が突起部２２ｄに近づくにつれて側壁部２１ｂに近づくように側壁部２１ｂに対して傾斜している。このように、近赤外線レーザー５０を側壁部２１ｂから離すように傾けることで、近赤外線レーザー５０とカバー部２１の側壁部２１ｂとの干渉を更に防止することができる。 In the fourth step, the near-infrared laser 50 does not interfere with the side wall portion 21b, and the protruding portion 13d of the protruding portion 22d and the optical axis direction of the near-infrared laser 50 are so melted that the protruding portion 22d is not biased. The angle formed by 51 is set to be less than 5 °. Therefore, the optical axis direction 51 of the near-infrared laser 50 is such that when the transmitter 2 is disposed in the vicinity of the cylindrical portion 1a, it approaches the axis 10 of the cylindrical portion 1a from the root 1d of the cylindrical portion 1a toward the tip 1c. Furthermore, it inclines with respect to the axis | shaft 10 of the cylinder part 1a. Further, the optical axis direction 51 of the near-infrared laser 50 is inclined with respect to the side wall portion 21b so as to approach the side wall portion 21b as the near-infrared laser 50 approaches the protruding portion 22d. Thus, by tilting the near-infrared laser 50 away from the side wall portion 21b, interference between the near-infrared laser 50 and the side wall portion 21b of the cover portion 21 can be further prevented.

第４の工程において、図９のように、突出部２２ｄの全体が溶融すると、第５の工程に進み、近赤外線レーザー５０の照射を停止する。カバー外縁部２１ｃとベース外縁部２２ｃは主材料が同じ樹脂材料であるため、この第５の工程の時点において、上述の通り、ベース外縁部２２ｃの筒部側接合面２９において両者は分子レベルで接合される。 In the fourth step, as shown in FIG. 9, when the entire protrusion 22d is melted, the process proceeds to the fifth step and the irradiation of the near-infrared laser 50 is stopped. Since the cover outer edge portion 21c and the base outer edge portion 22c are made of the same resin material, at the time of the fifth step, as described above, both of them are at the molecular level on the cylindrical portion side joint surface 29 of the base outer edge portion 22c. Be joined.

なお、近赤外線レーザー５０の照射は、突起部２２ｄの全周に対して同時に行われるのではなく、上記第４、第５の工程は、突起部２２ｄの一部毎に順次行われていく。したがって、突起部２２ｄの一部で溶着が終了し、他の部分で溶着が終了していない場合は、押さえ治具３０によってカバー外縁部２１ｃを押さえる力の分布が一様でなくなる。すると、カバー外縁部２１ｃと側壁部２１ｂが接続するコーナー部の一部に大きな応力が集中する場合があり、そのような場合には、コーナー部の当該一部に白化が起こる可能性が高くなる。しかし、本実施形態では、コーナー部の全周において側壁部２１ｂとカバー外縁部２１ｃが鋭角でも直角でもなく鈍角を成すので、コーナー部への応力集中が緩和され、その結果、白化が起こる可能性が低い。 The irradiation of the near infrared laser 50 is not performed simultaneously on the entire circumference of the protrusion 22d, but the fourth and fifth steps are sequentially performed for each part of the protrusion 22d. Therefore, when the welding is completed at a part of the protrusion 22d and the welding is not completed at the other part, the distribution of the force for pressing the cover outer edge part 21c by the pressing jig 30 is not uniform. Then, a large stress may concentrate on a part of the corner part where the cover outer edge part 21c and the side wall part 21b are connected. In such a case, the possibility that whitening occurs in the part of the corner part is increased. . However, in this embodiment, the side wall portion 21b and the cover outer edge portion 21c form an obtuse angle, not an acute angle or a right angle, on the entire periphery of the corner portion, so that stress concentration on the corner portion is alleviated, and as a result, whitening may occur Is low.

（他の実施形態）
なお、本発明は上記した実施形態に限定されるものではなく、特許請求の範囲に記載した範囲内において適宜変更が可能である。また、また、上記実施形態において、実施形態を構成する要素は、特に必須であると明示した場合および原理的に明らかに必須であると考えられる場合等を除き、必ずしも必須のものではないことは言うまでもない。また、上記実施形態において、実施形態の構成要素の個数、数値、量、範囲等の数値が言及されている場合、特に必須であると明示した場合および原理的に明らかに特定の数に限定される場合等を除き、その特定の数に限定されるものではない。また、上記実施形態において、構成要素等の形状、位置関係等に言及するときは、特に明示した場合および原理的に特定の形状、位置関係等に限定される場合等を除き、その形状、位置関係等に限定されるものではない。また、本発明は、上記実施形態に対する以下のような変形例も許容される。なお、以下の変形例は、それぞれ独立に、上記実施形態に適用および不適用を選択できる。すなわち、以下の変形例のうち任意の組み合わせを、上記実施形態に適用することができる。 (Other embodiments)
In addition, this invention is not limited to above-described embodiment, In the range described in the claim, it can change suitably. In addition, in the above embodiment, the elements constituting the embodiment are not necessarily essential unless explicitly stated as essential and clearly considered essential in principle. Needless to say. Further, in the above embodiment, when numerical values such as the number, numerical value, quantity, range, etc. of the constituent elements of the embodiment are mentioned, it is particularly limited to a specific number when clearly indicated as essential and in principle. The number is not limited to a specific number except for cases. In the above embodiment, when referring to the shape, positional relationship, etc. of components, the shape, position, etc., unless otherwise specified and in principle limited to a specific shape, positional relationship, etc. It is not limited to relationships. The present invention also allows the following modifications to the above embodiment. In addition, the following modifications can select application and non-application to the said embodiment each independently. In other words, any combination of the following modifications can be applied to the above-described embodiment.

（変形例１）
上記実施形態では、カバー部２１とベース部２２をレーザー溶着で接合している。しかし、カバー部２１とベース部２２の接合方法は、レーザー溶着に限らず、防水構造を実現する他の方法（例えば接着剤による接着）を採用してもよい。ただし、レーザー溶着は、経年劣化に強い等の利点がある。 (Modification 1)
In the above embodiment, the cover portion 21 and the base portion 22 are joined by laser welding. However, the method for joining the cover portion 21 and the base portion 22 is not limited to laser welding, and other methods for realizing a waterproof structure (for example, adhesion using an adhesive) may be employed. However, laser welding has advantages such as being resistant to aging.

（変形例２）
上記実施形態では、信号を送信する送信用デバイスの一例として、ＩｒＤＡという赤外線通信の規格に従って赤外線を出力するＬＥＤを例示している。しかし、赤外線通信以外の無線通信（例えばＮＦＣ）によって信号を送信する送信アンテナを送信用デバイスとして採用してもよい。 (Modification 2)
In the said embodiment, LED which outputs infrared rays according to the infrared communication specification called IrDA is illustrated as an example of the device for transmission which transmits a signal. However, a transmission antenna that transmits a signal by wireless communication (for example, NFC) other than infrared communication may be employed as the transmission device.

１ａ筒部
１０筒部の軸
１１筒部側接合面の法線
２１カバー部
２２ベース部
２２ｄ突出部
２５ａ〜２５ｄＬＥＤ（送信用デバイス）
２９筒部側接合面
５０近赤外線レーザー DESCRIPTION OF SYMBOLS 1a Cylinder part 10 Cylinder part axis | shaft 11 Normal line 21 of a cylinder part side joint surface Cover part 22 Base part 22d Protrusion part 25a-25d LED (device for transmission)
29 Tube side joint surface 50 Near infrared laser

Claims

A transmitter disposed in the vicinity of a cylindrical portion (1a) for receiving hydrogen fuel in a fuel cell vehicle,
Transmitting devices (25a to 25d) for transmitting signals;
A base (22) on which the transmitting device is mounted;
A cover portion (21) that is joined to the base portion and covers the transmission device,
Of the joint surface (29) where the base portion and the cover portion are joined, the normal line (11) of the tubular portion side joint surface (29) located on the tubular portion side of the transmitting device is the transmitter. Is arranged in the vicinity of the tube portion so that it approaches the shaft (10) of the tube portion as it goes from the root (1d) to the tip (1c) of the tube portion. Transmitter characterized by being inclined.

Of the surface (21cs) facing the side opposite to the base portion of the cover portion, the normal of the portion closer to the cylindrical portion than the transmitting device is that the transmitter is disposed in the vicinity of the cylindrical portion 2. The transmitter according to claim 1, wherein the transmitter is inclined with respect to the axis of the cylindrical portion so as to approach the axis of the cylindrical portion as it goes from the root of the cylindrical portion toward the tip. .

The cover part includes a side wall part (21b) and a cover outer edge part (21c) extending from the side wall part and in contact with the base part at the tube part side joint surface,
When the transmitter is disposed in the vicinity of the tube portion, the surface (21bs) on the tube portion side of the side wall portion is directed toward the tip from the root of the tube portion with respect to the shaft of the tube portion. The transmitter according to claim 1, wherein the transmitter is inclined so as to be separated from an axis of the cylindrical portion.

The transmitter according to any one of claims 1 to 3, wherein the joining of the base portion and the cover portion on the tubular portion side joining surface is realized by laser welding.

A method for manufacturing a transmitter (2) disposed in the vicinity of a cylindrical portion (1a) for receiving hydrogen fuel in a fuel cell vehicle,
Transmitting devices (25a to 25d) for transmitting signals, a base portion (22) on which the transmitting device is mounted, and a cover portion (21) that is joined to the base portion by laser welding and covers the transmitting device And a process of preparing
The cover part prepared in the preparing step includes a side wall part (21b) and a cover outer edge part extending from the side wall part toward the cylinder part when the transmitter is disposed in the vicinity of the cylinder part ( 21c)
The base portion prepared in the preparing step includes a base outer edge portion (22c) facing the cover outer edge portion, and a protruding portion (22d) protruding from the base outer edge portion,
The manufacturing method further includes:
Contacting the outer edge of the cover with the protrusion;
Irradiating the projecting portion with a near infrared laser (50) over the outer edge of the cover to melt the projecting portion, thereby joining the base portion and the cover portion,
In the joining step, the optical axis direction (51) of the near-infrared laser irradiating the projecting portion is made closer to the side wall portion as it approaches the projecting portion, and the projecting direction (13) of the projecting portion. And a method of manufacturing a transmitter, wherein the side wall portion is inclined so that an angle formed between the first side and the lower side is less than 5 °.