JP2004264264A

JP2004264264A - Ultrasonic sensor

Info

Publication number: JP2004264264A
Application number: JP2003057697A
Authority: JP
Inventors: Takuya Mori; 卓也森; Koji Nagano; 康志永野; Takashi Tsuji; 崇志辻
Original assignee: Matsushita Electric Works Ltd
Current assignee: Panasonic Electric Works Co Ltd
Priority date: 2003-03-04
Filing date: 2003-03-04
Publication date: 2004-09-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ultrasonic sensor capable of fixing a harness made to crawl in a bumper. <P>SOLUTION: In this ultrasonic sensor A, an apparatus body 1 is formed from an apparatus body rear part 1a having an approximate rectangular parallelepiped shape which is a synthetic resin molding, and a cylindrical apparatus body front part 1b having an approximate rounded-corner quadrangular section extended integrally from the front face of the apparatus body rear part 1a. On the upper face of the apparatus body rear part 1a, a harness fixing part 2 comprising a cantilever 2a having one end supported on the upper face of the apparatus body rear part 1a and projecting approximately in parallel with the upper face of the apparatus body rear part 1a at a prescribed interval, and a locking pawl 2b projecting on the inside face on the tip of the cantilever 2a. The locking pawl 2b has an inclined plane inclined so as to approach the upper face side of the apparatus body rear part 1a as proceeding from the tip side of the cantilever 2a toward the support side. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、超音波センサに関するものである。
【０００２】
【従来の技術】
従来、超音波を送受波することによって車両周囲の障害物を検知する超音波センサを備えた障害物検知システムが提供されている。この種の障害物検知システムに用いられる超音波センサとしては、パルス状の超音波（以下、超音波パルスという。）を間欠的に送波し、超音波パルスの送波から障害物での反射波を受波するまでの時間差によって所定の距離範囲内の障害物の有無を検知したり障害物までの距離および障害物の存在する方向を測定したりするものがある。この種の障害物検知システムでは、障害物に関する情報を車両の運転者に通報する報知手段（例えば、ディスプレイや発光ダイオードのような表示装置、ブザーのような音響出力装置など）と、超音波センサの出力に基づいて前記報知手段を制御する制御装置とを備えており、制御装置と超音波センサとの間はハーネスにより電気的に接続されている。
【０００３】
ところで、上述のような障害物検知システムに用いられる超音波センサは、車両のバンパーの表裏に貫通するように穿孔した取付孔に器体を挿入して取り付けられるのが一般的である（例えば、特許文献１参照。）。
【０００４】
この特許文献１に開示された超音波センサａは、図１２に示すように、センサエレメントである超音波振動子（図示せず）を収納した器体１００の前端縁にわたってフランジ部１００ａが突設されると共に、器体１００の外周面においてフランジ部１００ａから所定距離だけ離間した部位に全周にわたって係止溝（図示せず）が形成されており、器体１００をバンパーの表面ｘ１側から取付孔に挿入しフランジ部１００ａを取付孔の開口部周縁に当接させた後、一端が二股状に形成された板ばねからなる固定具２００をバンパーの裏面ｘ２に沿ってスライドさせて前記係止溝に係合させて、フランジ部１００ａと固定具２００とでバンパーＸを表裏から挟持することでバンパーＸに固定される。
【０００５】
また、バンパーＸへの別の取付構造を有する超音波センサとしては、図１３に示すものがある。この超音波センサｂは、前端縁にフランジ部２０１ａが突設されたベゼル部材２０１と、超音波振動子を収納しベゼル部材２０１に嵌装されるハウジングブロック１０１とから器体が構成される。この超音波センサｂをバンパーＸに取り付けるには、ベゼル部材２０１をバンパーの表面ｘ１側から取付穴へ挿入し、フランジ部２０１ａを前記取付孔の開口部周縁に当接させて図示しない係止爪とでバンパーＸを表裏から挟持することでベゼル部材２０１をバンパーに嵌装し、その後ハウジングブロック１０１をバンパーＸの裏面ｘ２側からベゼル部材２０１へ挿入し、ハウジングブロック１０１の上面および下面に設けられた係止凸部１０１ａ，１０１ａをベゼル部材２０１に設けられた係止孔２０１ｂ，２０１ｂに凹凸嵌合させて、ハウジングブロック１０１をベゼル部材２０１に固定させる。
【０００６】
さらに、別のバンパーＸへの取付構造を有する超音波センサとしては、図１４に示すものがある。この超音波センサｃは、上述した超音波センサｂとハウジングブロック１０１の固定の仕方が異なるもので、超音波センサｂと同様のハウジングブロック１０１と、バンパーＸの裏面ｘ２において取付孔の開口部周縁に超音波溶着などにより溶着される裏面取付枠２０２とからなり、裏面取付枠２０２をバンパーＸの裏面ｘ２の取付孔の開口部周縁に超音波溶着等で固定した後、ハウジングブロック１０１をバンパーＸの裏面ｘ２側から裏面取付枠２０２へ挿入し、ハウジングブロック１０１の上面および下面に設けられた係止凸部１０１ａ，１０１ａを裏面取付枠２０２に設けられた係止孔２０２ａ，２０２ａに凹凸嵌合させて、ハウジングブロック１０１を裏面取付枠２０２に固定させる。
【０００７】
【特許文献１】
特開平１１−１３３１３６号公報
【０００８】
【発明が解決しようとする課題】
ところで、従来の超音波センサでは、超音波センサの器体から導出されたハーネスｈ１や、バンパーＸ内に這わされたその他の電装部品のハーネスは、クランプ部材などの別部材で束ねられて、バンパーＸの裏面側に設けられた固定用孔または固定用リブ（共に図示せず）に固定されていた。
【０００９】
しかしながら、前記固定用孔または固定用リブは、バンパーＸの意匠性向上の観点から、バンパーＸに設ける場所が制限されており、そのため、ハーネスがたるんだり、ハーネスを蛇行させる必要が生じてハーネスが長くなる等の問題があった。
【００１０】
本発明は上記問題点に鑑みて為されたものであって、その目的とするところは、バンパー内に這わされたハーネスを固定することができる超音波センサを提供することにある。
【００１１】
【課題を解決するための手段】
上記目的を達成するために、請求項１記載の超音波センサは、超音波振動子を収納し、バンパーの表裏に貫通するように穿孔された取付孔から前記超音波振動子を外部に臨ませてバンパーの裏面側に突出して固定される器体と、バンパーの裏面側に突出した前記器体の部位に設けられバンパー内に這わされたハーネスを固定するハーネス固定手段とを備えたものとした。
【００１２】
請求項２記載の超音波センサは、請求項１記載の発明において、前記器体は、バンパーの表面側から前記取付孔に挿入され前端縁に突設されたフランジ部を前記取付孔の開口部周縁に当接させてバンパーに嵌装されるベゼル部材と、超音波振動子を収納し前記ベゼル部材にバンパーの裏面側から嵌装されるハウジングブロックとからなり、前記ハーネス固定手段を前記ベゼル部材に設けたものとした。
【００１３】
請求項３記載の超音波センサは、請求項１記載の発明において、前記器体は、バンパーの裏面において前記取付穴の開口部周縁に溶着される裏面取付枠と、超音波振動子を収納し前記裏面取付枠にバンパーの裏面側から嵌装されるハウジングブロックとからなり、前記ハーネス固定手段を前記裏面取付枠に設けたものとした。
【００１４】
請求項４記載の超音波センサは、請求項２または３の何れか記載の発明において、前記ハーネス固定手段を前記ハウジングブロックに設けたものとした。
【００１５】
請求項５記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、一端が前記器体の一面に支持され前記器体の一面と所定の間隔をもって略並行に突出する片持ち片と、該片持ち片の先端の内側面に突設された係止爪とからなるものとした。
【００１６】
請求項６記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、ハーネスが挿通される円筒状の胴体部および胴体部の両端部の外周縁に突設された突部を備えた筒状部材と、前記胴体部の外径と略同等の内径を有する円環の一部を切り欠き、該切り欠きを外側に向けて前記器体の一面に取着される保持部材とからなるものとした。
【００１７】
請求項７記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、前記器体の一部に貫設された係止孔と、前記係止孔に係止する係止手段およびハーネスを保持する保持手段を備えた係止部材とからなるものとした。
【００１８】
【発明の実施の形態】
以下、本発明を実施形態１から実施形態５によって説明する。
【００１９】
（実施形態１）
本実施形態の超音波センサＡを図１に示す。この超音波センサＡは、２個の超音波振動子（図示せず）を内蔵し、第１の超音波振動子から超音波パルスを間欠的に送波した後、障害物での反射波を第１の超音波振動子および第２の超音波振動子で受波し、第１の超音波振動子での超音波パルスの送波から受波までの時間差により障害物までの距離を測定すると共に、両超音波振動子において反射波を受波するまでの時間差から障害物の存在する方向を検知するもので、合成樹脂成形品であって略直方体形状の器体後部１ａと、器体後部１ａの前面（図１において左側の面。）から一体に延設された断面略角丸四角形の筒状の器体前部１ｂとから器体１が形成されている。
【００２０】
器体後部１ａの内部には、超音波を送波するための信号を発生して前記第１の超音波振動子に供給したり、前記第１および第２の超音波振動子で受波した超音波を信号として受け取ったり、障害物までの距離や方向を求めたりする回路の構成部品が回路基板に実装された電子回路部（図示せず）が収納されている。
【００２１】
また、器体後部１ａの一側面（図１において奥側の面。）には、コネクタ部（図示せず）が一体に突設されており、前記電子回路部を外部の制御装置と接続するためのハーネスｈ１が前記コネクタ部に接続されている。
【００２２】
また、器体後部１ａの上面（図１において上側の面。）には、一端が器体後部１ａの上面に支持され器体後部１ａの上面と所定の間隔をもって略並行に突出する片持ち片２ａと、片持ち片２ａの先端に内側面に突設された係止爪２ｂとからなるハーネス固定部２が形成されている。係止爪２ｂは、片持ち片２ａの先端側（自由端側）から支持側へ向かうにつれて器体後部１ａの上面側に近づくように傾斜する傾斜面を有している。
【００２３】
器体前部１ｂの内部には、２つの円柱状の収納孔（図示せず）が前面に開口して設けられ、筒状の保持ゴムに嵌め込まれた前記第１および第２の超音波振動子が前記収納孔にそれぞれ収納されている。
【００２４】
また、器体前部１ｂの前端縁には、フランジ部１ｃが突設されている。フランジ部１ｃの外形は器体後部１ａおよび器体前部１ｂの外形よりも大きく形成されている。
【００２５】
上記のように構成された超音波センサＡをバンパーに取り付けるには、図１２に示した従来の超音波センサａと同様に、バンパーの表裏に貫通するように穿孔された取付孔に器体１をバンパーの表面側から挿入し、フランジ部１ｃの後面を取付孔の開口部周縁に当接させ、図示しない固定具（例えば、従来の超音波センサａに用いられている一端が二股状に形成された板ばね。）を用いて、バンパーを表裏から挟持することでバンパーに取り付けられる。この時、前記第１および第２の超音波振動子は取付孔から外部に臨んでおり、器体１はバンパーの裏面側に突出した状態となる。
【００２６】
ところで、超音波センサＡが取り付けられたバンパーの内側には、超音波センサＡのコネクタ部に接続されたハーネスｈ１や、車両に用いられるその他の電装部品（例えば、ランプなど。）のハーネスｈ２が這わされている。
【００２７】
本実施形態の超音波センサＡは、それらのハーネスｈ１，ｈ２をハーネス固定部２に固定することができる。すなわち、ハーネスｈ１，ｈ２をハーネス固定部２の片持ち片２ａと略直交する方向へ向けて、片持ち片２ａの先端側から支持側へと押し込むと、係止爪２ｂの傾斜面がハーネスｈ１，ｈ２に押圧されて片持ち片２ａが弾性変形して外側に開き、ハーネスｈ１，ｈ２が係止爪２ｂを通り抜けると係止爪２ｂの押圧が解除されて片持ち片２ａの形状が元に戻り、それ以降はハーネスｈ１，ｈ２が係止爪２ｂに係合することで抜けが防止される。
【００２８】
かかる超音波センサＡにおいては、バンパーに取り付けられた後、バンパー内に這わされたハーネスｈ１，ｈ２を固定することができる。
【００２９】
（実施形態２）
本実施形態の超音波センサＡ’を図２に示す。この超音波センサＡ’は、実施形態１の超音波センサＡに対してハーネス固定部３の形状が異なる点に特徴があり、その他の基本構成は実施形態１と共通するために共通する部分については同一の符号を付して説明を省略する。
【００３０】
本実施形態のハーネス固定部３は、図２または図３に示すように、円筒状の胴体部３ａａを有し胴体部３ａａの両端部の外周縁に突部３ａｂを突設した筒状部材３ａと、胴体部３ａａの外径と略同等の内径を有する２つの円環３ｂａ，３ｂａの一部を切り欠き、２つの円環３ｂａ，３ｂａを前記切り欠きとは反対側で連結した保持部材３ｂとからなり、筒状部材３ａの胴体部３ａａにハーネスｈ１，ｈ２を挿通し、保持部材３ｂを切り欠きを外側に向けて器体後部１ａの上面に取着させて構成される。
【００３１】
保持部材３ｂの２つの円環３ｂａ，３ｂａの外側の間隔は、筒状部材３ａの両突部３ａｂの内側の間隔とほぼ等しく、円環３ｂａ，３ｂａの切り欠きから筒状部材３ａの胴体部３ａａを挿入すると、円環３ｂａ，３ｂａが弾性変形して外側に開き、筒状部材３ａの挿入が完了すると円環３ｂａ，３ｂａが元の形状に戻って、筒状部材３ａを保持する。また、筒状部材３ａの突部３ａｂ，３ａｂと、保持部材３ｂの円環３ｂａ，３ｂａとが係合することで、筒状部材３ａが保持部材３ｂからスライドして抜けることもない。
【００３２】
以上のように構成されたハーネス固定部３でも実施形態１のハーネス固定部２と同様にバンパー内に這わされたハーネスｈ１，ｈ２を固定することができ、さらにハーネスｈ１，ｈ２が束ねてテーピングされている場合でもまとめて固定できる。
【００３３】
（実施形態３）
本実施形態の超音波センサＡ’’を図４に示す。この超音波センサＡ’’は、実施形態１または実施形態２の超音波センサＡ，Ａ’に対してハーネス固定部４の形状が異なる点に特徴があり、その他の基本構成は実施形態１または実施形態２と共通するために共通する部分については同一の符号を付して説明を省略する。
【００３４】
ハーネス固定部４は、図４および図５に示すように、器体後部１ａの後瑞から延設された延設片１ｄに穿孔された係止孔４ａと、球の一部を切り取った形状の基体４ｂｃおよび基体４ｂｃの平面側に設けられた係止手段としての係止爪４ｂａおよび基体４ｂｃの曲面側に設けられたハーネス保持手段としてのリング部４ｂｂを備えた係止部材４ｂとからなる。
【００３５】
係止爪４ｂａは先端から反対側へ向かうにつれて広がるように傾斜する傾斜面を有し、傾斜面を内側に弾性変形させながら係止孔４ａに挿入され、傾斜面が係止孔４ａを抜けると元の形状に戻って、係止孔４ａの一方の開口部周縁に係止される。この時、係止孔４ａの他方の開口部周縁には基体４ｂｃの平面側が当接しており、延設片１ｄにがたつくことなく係止される。
【００３６】
リング部４ｂｂには、ハーネスｈ１，ｈ２が挿通され、ハーネスｈ１，ｈ２を保持する。
【００３７】
以上のように構成されたハーネス固定部４でも実施形態１のハーネス固定部２と同様にバンパー内に這わされたハーネスｈ１，ｈ２を固定することができ、さらに実施形態２のハーネス固定部３と同様にハーネスｈ１，ｈ２が束ねてテーピングされている場合でもまとめて固定できる。
【００３８】
（実施形態４）
本実施形態の超音波センサＢを図６に示す。この超音波センサＢは、実施形態１乃至３の超音波センサＡ，Ａ’，Ａ’’と同様に２個の超音波振動子を内蔵するもので、超音波センサＢの動作および基本構成については実施形態１乃至３と共通するために説明を省略し、本実施形態の特徴となる部分についてのみ詳細に説明する。
【００３９】
本実施形態の超音波センサＢは、器体１０が、ベゼル部材１０Ａと、ハウジングブロック１０Ｂとから構成される。
【００４０】
ベゼル部材１０Ａは、ハウジングブロック１０Ｂのハウジング前部１５ｂが後瑞の開口から挿入される筒状の胴体部１１と、胴体部１１の後瑞縁から上下に対向するように延設され、それぞれ係止孔１３ａが貫設された延設片１３，１３と、胴体部１１の前端縁に突設されたフランジ部１２とからなる。
【００４１】
また、胴体部１１の上面には実施形態１と同様のハーネス固定部２が設けられている。すなわち、片持ち片２ａの一端が胴体部１１の上面に支持され、胴体部１１の上面と所定の間隔をもって略並行する片持ち片２ａの先端の内側面に係止爪２ｂが突設されている。
【００４２】
ハウジングブロック１０Ｂは、内部に電子回路部が収納された略直方体形状のハウジング後部１５ａと、ハウジング後部１５ａの前面から一体に延設された断面略角丸四角形の筒状のハウジング前部１５ｂとからなる。
【００４３】
ハウジング後部１５ａの上面および下面には、ベゼル部材１０Ａの延設片１３に穿孔された係止孔１３ａと凹凸嵌合する凸部１６，１６が突設されている。
【００４４】
また、ハウジング後部１５ａの一側面（図６において奥側の面。）には、コネクタ部（図示せず）が一体に突設されており、前記電子回路部を外部の制御装置と接続するためのハーネスｈ１が前記コネクタ部に接続されている。
【００４５】
ハウジング前部１５ｂの内部には、２つの円柱状の収納孔（図示せず）が前面に開口して設けられ、筒状の保持ゴムに嵌め込まれた前記第１および第２の超音波振動子が前記収納孔にそれぞれ収納されている。
【００４６】
上記のように構成された超音波センサＢをバンパーに取り付けるには、図１３に示した従来の超音波センサｂと同様に、バンパーの表裏に貫通するように穿孔された取付孔にベゼル部材１０Ａをバンパーの表面側から挿入し、フランジ部１２の後面を取付孔の開口部周縁に当接させ、フランジ部１２と図示しない係止爪とでバンパーを表裏から挟持することでベゼル部材１０Ａをバンパーに嵌装し、その後ハウジング前部１５ｂをバンパーの裏面側からベゼル部材１０Ａへ挿入し、ハウジング後部１５ａの上面および下面に設けられた凸部１６，１６をベゼル部材１０Ａに設けられた係止孔１３ａ，１３ａに凹凸嵌合させて、ハウジングブロック１０Ｂをベゼル部材１０Ａに固定させる。
【００４７】
この時、前記第１および第２の超音波振動子は取付孔から外部に臨んでおり、ハウジングブロック１０Ｂはバンパーの裏面側に突出した状態となる。
【００４８】
かかる超音波センサＢにおいても、実施形態１の超音波センサＡと同様に、超音波センサＢのコネクタ部に接続されたハーネスｈ１や、その他の電装部品のハーネスｈ２など、バンパー内に這わされたハーネスをハーネス固定部２により固定することができる。
【００４９】
また、本実施形態においても、ハーネス固定部２の形状は、図７に示すハーネス固定部３や、図８に示すハーネス固定部４でもよい。なお、これらの説明については実施形態２または実施形態３と共通するため省略する。
【００５０】
また、ハーネス固定部２を設ける位置は、ベゼル部材１０Ａではなく、ハウジングブロック１０Ｂのハウジング後部１５ａでもよい。この場合においても、ハーネス固定部２の形状は、ハーネス固定部３やハーネス固定部４の形状でもよい。
【００５１】
（実施形態５）
本実施形態の超音波センサＣを図９に示す。この超音波センサＣは、実施形態４の超音波センサＢに対して、器体２０が裏面取付枠２０Ａとハウジングブロック１０Ｂとから構成される点に特徴があり、ハウジングブロック１０Ｂについては同等のため同一の符号を付して説明を省略し、本実施形態の特徴となる裏面取付枠２０Ａについてのみ詳細に説明する。
【００５２】
本実施形態の裏面取付枠２０Ａは、ハウジングブロック１０Ｂのハウジング前部１５ｂが後瑞の開口から挿入される筒状の胴体部２１と、胴体部２１の後瑞縁から上下に対向するように延設され、それぞれ係止孔２３ａが貫設された延設片２３，２３と、胴体部２１の前端縁に突設されたフランジ部２２とからなる。
【００５３】
また、胴体部２１の上面には実施形態４と同様のハーネス固定部２が設けられている。すなわち、片持ち片２ａの一端が胴体部２１の上面に支持され、胴体部２１の上面と所定の間隔をもって略並行する片持ち片２ａの先端の内側面に係止爪２ｂが突設されている。
【００５４】
上記のように構成された超音波センサＣをバンパーに取り付けるには、図１４に示した従来の超音波センサｃと同様に、裏面取付枠２０Ａのフランジ部２２をバンパーＸの裏面ｘ２において取付孔の開口部周縁に超音波溶着等で固定した後、ハウジングブロック１０ＢをバンパーＸの裏面ｘ２側から裏面取付枠２０Ａへ挿入し、ハウジングブロック１０Ｂの上面および下面に設けられた係止凸部１６，１６を裏面取付枠２０Ａに設けられた係止孔２３ａ，２３ａに凹凸嵌合させて、ハウジングブロック１０Ｂを裏面取付枠２０Ａに固定させる。
【００５５】
この時、前記第１および第２の超音波振動子は取付孔から外部に臨んでおり、ハウジングブロック１０Ｂはバンパーの裏面側に突出した状態となる。
【００５６】
かかる超音波センサＣにおいても、実施形態４の超音波センサＢと同様に、超音波センサＣのコネクタ部に接続されたハーネスｈ１や、その他の電装部品のハーネスｈ２など、バンパー内に這わされたハーネスをハーネス固定部２により固定することができる。
【００５７】
また、本実施形態においても、ハーネス固定部２の形状は、図１０に示すハーネス固定部３や、図１１に示すハーネス固定部４でもよい。
【００５８】
また、ハーネス固定部２を設ける位置は、裏面取付枠２０Ａではなく、ハウジングブロック１０Ｂのハウジング後部１５ａでもよい。この場合においても、ハーネス固定部２の形状は、ハーネス固定部３やハーネス固定部４の形状でもよい。
【００５９】
【発明の効果】
請求項１記載の超音波センサは、超音波振動子を収納し、バンパーの表裏に貫通するように穿孔された取付孔から前記超音波振動子を外部に臨ませてバンパーの裏面側に突出して固定される器体と、バンパーの裏面側に突出した前記器体の部位に設けられバンパー内に這わされたハーネスを固定するハーネス固定手段とを備えたので、バンパーに取り付けられた後に、バンパー内に這わされたハーネスを固定することができるという効果がある。
【００６０】
請求項２記載の超音波センサは、請求項１記載の発明において、前記器体は、バンパーの表面側から前記取付孔に挿入され前端縁に突設されたフランジ部を前記取付孔の開口部周縁に当接させてバンパーに嵌装されるベゼル部材と、超音波振動子を収納し前記ベゼル部材にバンパーの裏面側から嵌装されるハウジングブロックとからなり、前記ハーネス固定手段を前記ベゼル部材に設けたので、前記ベゼル部材にハーネスを固定することができる請求項１記載の超音波センサを実現できるという効果がある。
【００６１】
請求項３記載の超音波センサは、請求項１記載の発明において、前記器体は、バンパーの裏面において前記取付穴の開口部周縁に溶着される裏面取付枠と、超音波振動子を収納し前記裏面取付枠にバンパーの裏面側から嵌装されるハウジングブロックとからなり、前記ハーネス固定手段を前記裏面取付枠に設けたので、前記裏面取付枠にハーネスを固定することができる請求項１記載の超音波センサを実現できるという効果がある。
【００６２】
請求項４記載の超音波センサは、請求項２又は３記載の発明において、前記ハーネス固定手段を前記ハウジングブロックに設けたので、前記ハウジングブロックにハーネスを固定することができる請求項２または３記載の超音波センサを実現できるという効果がある。
【００６３】
請求項５記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、一端が前記器体の一面に支持され前記器体の一面と所定の間隔をもって略並行に突出する片持ち片と、該片持ち片の先端の内側面に突設された係止爪とからなるので、ハーネスを前記片持ち片と略直交する方向へ向け、片持ち片の先端側から支持側へハーネスを押し込み、前記係止爪によりハーネスの抜けを防止するハーネス固定手段を実現できるという効果がある。
【００６４】
請求項６記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、ハーネスが挿通される円筒状の胴体部および胴体部の両端部の外周縁に突設された突部を備えた筒状部材と、前記胴体部の外径と略同等の内径を有する円環の一部を切り欠き、該切り欠きを外側に向けて前記器体の一面に取着される保持部材とからなるので、前記筒状部材にハーネスを挿通し、該筒状部材を保持部材の切り欠きから円環へと押し込みハーネスを固定するハーネス固定手段を実現できるという効果がある。
【００６５】
請求項７記載の超音波センサは、請求項１乃至４の何れか記載の発明において、前記ハーネス固定手段は、前記器体の一部に貫設された係止孔と、前記係止孔に係止する係止手段およびハーネスを保持する保持手段を備えた係止部材とからなるので、前記ハーネス保持手段によりハーネスを保持し、前記係止手段を前記係止孔に係合させてハーネスを固定するハーネス固定手段を実現できるという効果がある。
【図面の簡単な説明】
【図１】実施形態１の超音波センサを示す斜視図である。
【図２】実施形態２の超音波センサを示す斜視図である。
【図３】同上の要部の拡大図である。
【図４】実施形態３の超音波センサを示す斜視図である。
【図５】同上の要部の拡大図である。
【図６】実施形態４の超音波センサを示す斜視図である。
【図７】同上のハーネス固定部の別の形状を示す斜視図である。
【図８】同上のハーネス固定部のさらに別の形状を示す斜視図である。
【図９】実施形態５の超音波センサを示す斜視図である。
【図１０】同上のハーネス固定部の別の形状を示す斜視図である。
【図１１】同上のハーネス固定部のさらに別の形状を示す斜視図である。
【図１２】従来の超音波センサをバンパーに取り付けた状態を模式的に示す図である。
【図１３】従来の別の構造の超音波センサをバンパーに取り付けた状態を模式的に示す図である。
【図１４】従来のさらに別の構造の超音波センサをバンパーに取り付けた状態を模式的に示す図である。
【符号の説明】
１器体
１ａ器体後部
１ｂ器体前部
１ｃフランジ部
２ハーネス固定部
２ａ片持ち片
２ｂ係止爪
３ハーネス固定部
３ａ筒状部材
３ａａ胴体部
３ａｂ突部
３ｂ保持部材
３ｂａ円環
４ハーネス保持部
４ａ係止孔
４ｂ係止部材
４ｂａ係止爪
４ｂｂリング部
４ｂｃ基体
１０器体
１０Ａベゼル部材
１０Ｂハウジングブロック
１１胴体部
１２フランジ部
１３延設片
１３ａ係止孔
１５ａハウジング後部
１５ｂハウジング前部
１６凸部
２０器体
２０Ａ裏面取付枠
２１胴体部
２２フランジ部
２３延設片
２３ａ係止孔
ｈ１，ｈ２ハーネス
Ａ〜Ｃ超音波センサ
Ｘバンパー[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an ultrasonic sensor.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an obstacle detection system provided with an ultrasonic sensor that detects an obstacle around a vehicle by transmitting and receiving ultrasonic waves has been provided. As an ultrasonic sensor used in this type of obstacle detection system, a pulse-like ultrasonic wave (hereinafter, referred to as an ultrasonic pulse) is intermittently transmitted, and the ultrasonic wave is transmitted and reflected from an obstacle. In some cases, the presence or absence of an obstacle within a predetermined distance range is detected or the distance to the obstacle and the direction in which the obstacle is present are measured based on the time difference until the wave is received. In this type of obstacle detection system, a notifying unit (for example, a display device such as a display or a light emitting diode, a sound output device such as a buzzer, etc.) for notifying a driver of a vehicle of information regarding an obstacle, and an ultrasonic sensor And a control device for controlling the notification means based on the output of the control unit. The control device and the ultrasonic sensor are electrically connected by a harness.
[0003]
By the way, the ultrasonic sensor used in the above-described obstacle detection system is generally mounted by inserting a body into a mounting hole formed so as to penetrate the front and back of a bumper of a vehicle (for example, See Patent Document 1.).
[0004]
In the ultrasonic sensor a disclosed in Patent Document 1, as shown in FIG. 12, a flange portion 100a protrudes over a front edge of a body 100 containing an ultrasonic transducer (not shown) as a sensor element. At the same time, a locking groove (not shown) is formed over the entire periphery of the outer peripheral surface of the body 100 at a position separated from the flange portion 100a by a predetermined distance, and the body 100 is mounted from the surface x1 side of the bumper. After the flange 100a is inserted into the hole and the flange 100a is brought into contact with the periphery of the opening of the mounting hole, the fixture 200 made of a leaf spring having one end formed in a forked shape is slid along the back surface x2 of the bumper to lock the hole. The bumper X is fixed to the bumper X by being engaged with the groove and sandwiching the bumper X from the front and back by the flange portion 100a and the fixture 200.
[0005]
FIG. 13 shows an ultrasonic sensor having another mounting structure for the bumper X. The ultrasonic sensor b includes a bezel member 201 having a flange 201a protruding from a front end edge thereof, and a housing block 101 that accommodates the ultrasonic transducer and is fitted to the bezel member 201. To attach the ultrasonic sensor b to the bumper X, the bezel member 201 is inserted into the mounting hole from the surface x1 side of the bumper, and the flange portion 201a is brought into contact with the periphery of the opening of the mounting hole, so that a locking claw (not shown) is formed. The bezel member 201 is fitted to the bumper by sandwiching the bumper X from the front and back, and then the housing block 101 is inserted into the bezel member 201 from the back surface x2 side of the bumper X, and provided on the upper and lower surfaces of the housing block 101. The locking protrusions 101a, 101a are fitted into locking holes 201b, 201b provided in the bezel member 201, so that the housing block 101 is fixed to the bezel member 201.
[0006]
Further, as an ultrasonic sensor having a mounting structure to another bumper X, there is one shown in FIG. This ultrasonic sensor c is different from the above-mentioned ultrasonic sensor b in the manner of fixing the housing block 101. The ultrasonic sensor c has the same housing block 101 as the ultrasonic sensor b, and the periphery of the opening of the mounting hole on the back surface x2 of the bumper X. After the back mounting frame 202 is fixed to the periphery of the opening of the mounting hole on the back surface x2 of the bumper X by ultrasonic welding or the like, the housing block 101 is attached to the bumper X. From the back surface x2 side of the housing block 101, the engaging protrusions 101a, 101a provided on the upper surface and the lower surface of the housing block 101 are fitted into engaging holes 202a, 202a provided on the back surface mounting frame 202. Then, the housing block 101 is fixed to the back mounting frame 202.
[0007]
[Patent Document 1]
JP-A-11-133136
[0008]
[Problems to be solved by the invention]
By the way, in the conventional ultrasonic sensor, the harness h1 derived from the body of the ultrasonic sensor and the harnesses of other electric components crawled in the bumper X are bundled by another member such as a clamp member, and the bumper It was fixed to fixing holes or fixing ribs (both not shown) provided on the back side of X.
[0009]
However, from the viewpoint of improving the design of the bumper X, the place where the fixing hole or the fixing rib is provided in the bumper X is limited, and therefore, the harness sags or the harness needs to be meandered, so that the harness is required. There were problems such as lengthening.
[0010]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an ultrasonic sensor that can fix a harness crawl in a bumper.
[0011]
[Means for Solving the Problems]
In order to achieve the above object, an ultrasonic sensor according to claim 1 accommodates an ultrasonic vibrator and exposes the ultrasonic vibrator to the outside through a mounting hole formed so as to penetrate the front and back of a bumper. And a harness fixing means for fixing a harness provided in a part of the body protruding to the back side of the bumper and fixed to the harness crawled in the bumper. .
[0012]
In the ultrasonic sensor according to the second aspect, in the invention according to the first aspect, the container body has a flange portion inserted into the mounting hole from a surface side of the bumper and protruding from a front end edge of the opening portion of the mounting hole. A bezel member to be fitted to the bumper by abutting on a peripheral edge; and a housing block containing an ultrasonic vibrator and fitted to the bezel member from the back side of the bumper, wherein the harness fixing means is provided by the bezel member. It was provided in.
[0013]
An ultrasonic sensor according to a third aspect of the present invention is the ultrasonic sensor according to the first aspect, wherein the body houses a back mounting frame welded to a periphery of an opening of the mounting hole on a back surface of the bumper, and an ultrasonic transducer. A housing block is fitted to the back mounting frame from the back side of the bumper, and the harness fixing means is provided on the back mounting frame.
[0014]
According to a fourth aspect of the present invention, in the ultrasonic sensor according to the second or third aspect, the harness fixing means is provided on the housing block.
[0015]
According to a fifth aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means has one end supported on one surface of the body and substantially at a predetermined distance from one surface of the body. It consists of a cantilever protruding in parallel and a locking claw protruding from the inner surface of the tip of the cantilever.
[0016]
According to a sixth aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means projects from a cylindrical body portion through which the harness is inserted and outer peripheral edges of both ends of the body portion. A cylindrical member having a projection provided therein and a part of a ring having an inner diameter substantially equal to the outer diameter of the body portion are cut out, and the cutout is outwardly formed on one surface of the body. And a holding member to be attached.
[0017]
According to a seventh aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means includes a locking hole provided through a part of the body, and a locking hole provided in the locking hole. The locking member includes locking means for locking and a locking member having holding means for holding the harness.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to Embodiments 1 to 5.
[0019]
(Embodiment 1)
FIG. 1 shows an ultrasonic sensor A according to the present embodiment. This ultrasonic sensor A incorporates two ultrasonic transducers (not shown), intermittently transmits ultrasonic pulses from the first ultrasonic transducer, and then transmits reflected waves from an obstacle. Waves are received by the first ultrasonic oscillator and the second ultrasonic oscillator, and the distance to the obstacle is measured based on the time difference between the transmission and reception of the ultrasonic pulse by the first ultrasonic oscillator. In addition, the direction in which an obstacle is present is detected from the time difference until the reflected waves are received by the two ultrasonic transducers, and a substantially rectangular parallelepiped body rear part 1a, which is a synthetic resin molded article, and a body rear part The body 1 is formed from a cylindrical body front part 1b having a substantially rounded square cross section and extending integrally from the front surface of 1a (the left side surface in FIG. 1).
[0020]
A signal for transmitting an ultrasonic wave is generated and supplied to the first ultrasonic vibrator or received by the first and second ultrasonic vibrators inside the body rear portion 1a. An electronic circuit unit (not shown) in which components of a circuit that receives an ultrasonic wave as a signal and obtains a distance and a direction to an obstacle are mounted on a circuit board is housed.
[0021]
A connector (not shown) is integrally provided on one side surface (the rear surface in FIG. 1) of the body rear portion 1a, and connects the electronic circuit portion to an external control device. Harness h1 is connected to the connector part.
[0022]
On the upper surface (upper surface in FIG. 1) of the body rear portion 1a, one end is supported by the upper surface of the body rear portion 1a and protrudes substantially in parallel with the upper surface of the body rear portion 1a at a predetermined interval. A harness fixing portion 2 is formed which includes a hook 2b and a locking claw 2b protruding from the inner surface at the tip of the cantilever 2a. The locking claw 2b has an inclined surface that is inclined so as to approach the upper surface side of the body rear part 1a from the front end side (free end side) of the cantilever 2a toward the support side.
[0023]
Inside the container body front part 1b, two cylindrical storage holes (not shown) are provided with openings on the front surface, and the first and second ultrasonic vibrations fitted into the cylindrical holding rubber are provided. The child is stored in each of the storage holes.
[0024]
In addition, a flange portion 1c is protruded from a front end edge of the container body front portion 1b. The outer shape of the flange portion 1c is formed larger than the outer shapes of the rear part 1a and the front part 1b of the body.
[0025]
In order to attach the ultrasonic sensor A configured as described above to the bumper, similarly to the conventional ultrasonic sensor a shown in FIG. 12, the body 1 is inserted into the mounting hole penetrated through the front and back of the bumper. Is inserted from the front side of the bumper, the rear surface of the flange portion 1c is brought into contact with the periphery of the opening of the mounting hole, and a fixing tool (not shown) (for example, one end used in the conventional ultrasonic sensor a is formed in a bifurcated shape). The leaf spring is attached to the bumper by sandwiching the bumper from both sides. At this time, the first and second ultrasonic vibrators face the outside from the mounting holes, and the case 1 is in a state of protruding toward the back side of the bumper.
[0026]
By the way, inside the bumper to which the ultrasonic sensor A is attached, a harness h1 connected to a connector portion of the ultrasonic sensor A and a harness h2 of other electric components (for example, a lamp) used for a vehicle are provided. I'm crawling.
[0027]
The ultrasonic sensor A of the present embodiment can fix the harnesses h1 and h2 to the harness fixing portion 2. That is, when the harnesses h1 and h2 are pushed in the direction substantially perpendicular to the cantilever 2a of the harness fixing portion 2 from the distal end side of the cantilever 2a toward the support side, the inclined surface of the locking claw 2b becomes harness h1. , H2, the cantilever 2a is elastically deformed and opens outward. When the harnesses h1, h2 pass through the locking claw 2b, the pressing of the locking claw 2b is released, and the shape of the cantilever 2a is changed to the original shape. After returning, the harnesses h1 and h2 are engaged with the locking claws 2b to prevent the harnesses h1 and h2 from coming off.
[0028]
In such an ultrasonic sensor A, after being attached to the bumper, the harnesses h1 and h2 crawled inside the bumper can be fixed.
[0029]
(Embodiment 2)
FIG. 2 shows an ultrasonic sensor A ′ of the present embodiment. The ultrasonic sensor A ′ is characterized in that the shape of the harness fixing portion 3 is different from the ultrasonic sensor A of the first embodiment, and the other basic configuration is common to the first embodiment. Are denoted by the same reference numerals and description thereof is omitted.
[0030]
As shown in FIG. 2 or FIG. 3, the harness fixing portion 3 of the present embodiment has a cylindrical body 3aa, and has a cylindrical member 3a having protrusions 3ab protruding from outer peripheral edges of both ends of the body 3aa. And a holding member 3b in which two annular rings 3ba, 3ba having an inner diameter substantially equal to the outer diameter of the body portion 3aa are cut out, and the two annular rings 3ba, 3ba are connected on the opposite side to the notch. The harnesses h1 and h2 are inserted into the body 3aa of the cylindrical member 3a, and the holding member 3b is attached to the upper surface of the body rear portion 1a with the notch facing outward.
[0031]
The outer space between the two rings 3ba, 3ba of the holding member 3b is substantially equal to the inner space between the two protrusions 3ab of the cylindrical member 3a, and the body portion of the cylindrical member 3a extends from the cutout of the rings 3ba, 3ba. When the 3aa is inserted, the rings 3ba, 3ba are elastically deformed and open outward, and when the insertion of the cylindrical member 3a is completed, the rings 3ba, 3ba return to their original shapes and hold the cylindrical member 3a. In addition, the protrusions 3ab, 3ab of the cylindrical member 3a are engaged with the rings 3ba, 3ba of the holding member 3b, so that the cylindrical member 3a does not slide out of the holding member 3b.
[0032]
The harness fixing portion 3 configured as described above can fix the harnesses h1 and h2 crawl in the bumper similarly to the harness fixing portion 2 of the first embodiment, and furthermore, the harnesses h1 and h2 are bundled and taped. Can be fixed together.
[0033]
(Embodiment 3)
FIG. 4 shows an ultrasonic sensor A ″ of the present embodiment. The ultrasonic sensor A ″ is characterized in that the shape of the harness fixing portion 4 is different from the ultrasonic sensors A and A ′ of the first or second embodiment, and the other basic configuration is the same as that of the first or second embodiment. Portions common to the second embodiment are denoted by the same reference numerals, and description thereof is omitted.
[0034]
As shown in FIGS. 4 and 5, the harness fixing portion 4 has a locking hole 4a formed in an extension piece 1d extending from the rear end of the body rear portion 1a, and a shape obtained by cutting a part of a ball. And a locking member 4b provided with a locking claw 4ba as locking means provided on the plane side of the base 4bc and a ring portion 4bb as harness holding means provided on the curved surface side of the base 4bc. .
[0035]
The locking claw 4ba has an inclined surface that is inclined so as to widen from the tip to the opposite side, and is inserted into the locking hole 4a while elastically deforming the inclined surface inward, and when the inclined surface passes through the locking hole 4a. It returns to its original shape and is locked at the periphery of one opening of the locking hole 4a. At this time, the flat side of the base 4bc is in contact with the periphery of the other opening of the locking hole 4a, and the locking is performed without rattling on the extension piece 1d.
[0036]
The harnesses h1 and h2 are inserted through the ring portion 4bb, and hold the harnesses h1 and h2.
[0037]
The harness fixing portion 4 configured as described above can fix the harnesses h1 and h2 crawl in the bumper similarly to the harness fixing portion 2 of the first embodiment. Similarly, even when the harnesses h1 and h2 are bundled and taped, they can be fixed together.
[0038]
(Embodiment 4)
FIG. 6 shows an ultrasonic sensor B of the present embodiment. This ultrasonic sensor B incorporates two ultrasonic transducers similarly to the ultrasonic sensors A, A ′, and A ″ of the first to third embodiments. The operation and basic configuration of the ultrasonic sensor B are described below. Are common to the first to third embodiments, and a description thereof will be omitted, and only the features that are the features of the present embodiment will be described in detail.
[0039]
In the ultrasonic sensor B of the present embodiment, the body 10 includes a bezel member 10A and a housing block 10B.
[0040]
The bezel member 10A is provided so as to extend in such a manner that the housing front portion 15b of the housing block 10B is inserted through the rear opening and the cylindrical body portion 11 is vertically opposed from the rear edge of the body portion 11. It comprises extending pieces 13, 13 through which a stop hole 13 a is penetrated, and a flange 12 protruding from the front end of the body 11.
[0041]
A harness fixing portion 2 similar to that of the first embodiment is provided on the upper surface of the body portion 11. That is, one end of the cantilever 2a is supported on the upper surface of the body portion 11, and the locking claw 2b protrudes from the inner surface of the tip of the cantilever 2a which is substantially parallel to the upper surface of the body portion 11 at a predetermined interval. I have.
[0042]
The housing block 10B includes a substantially rectangular parallelepiped housing rear portion 15a in which an electronic circuit portion is housed, and a tubular housing front portion 15b having a substantially rounded square cross section and integrally extending from the front surface of the housing rear portion 15a. Become.
[0043]
On the upper and lower surfaces of the rear portion 15a of the housing, convex portions 16, 16 are formed to protrude and engage with the locking holes 13a formed in the extending piece 13 of the bezel member 10A.
[0044]
A connector (not shown) is integrally provided on one side surface (the rear surface in FIG. 6) of the housing rear portion 15a to connect the electronic circuit portion to an external control device. Is connected to the connector section.
[0045]
Inside the front part 15b of the housing, two cylindrical storage holes (not shown) are provided with an opening on the front surface, and the first and second ultrasonic vibrators fitted in a cylindrical holding rubber. Are stored in the storage holes, respectively.
[0046]
In order to attach the ultrasonic sensor B configured as described above to the bumper, similarly to the conventional ultrasonic sensor b shown in FIG. 13, a bezel member 10A is attached to a mounting hole formed so as to penetrate the front and back of the bumper. Is inserted from the front side of the bumper, the rear surface of the flange portion 12 is brought into contact with the periphery of the opening of the mounting hole, and the bezel member 10A is sandwiched between the front and back sides of the bumper between the flange portion 12 and the not-shown locking claws. Then, the front part 15b of the housing is inserted into the bezel member 10A from the back side of the bumper, and the projections 16, 16 provided on the upper and lower surfaces of the rear part 15a of the housing are engaged with the locking holes provided in the bezel member 10A. The housing block 10B is fixed to the bezel member 10A by fitting the protrusions 13a and 13a with the concave and convex.
[0047]
At this time, the first and second ultrasonic vibrators face the outside from the mounting holes, and the housing block 10B is in a state of protruding toward the rear surface of the bumper.
[0048]
Also in the ultrasonic sensor B, similarly to the ultrasonic sensor A of the first embodiment, the harness h1 connected to the connector of the ultrasonic sensor B and the harness h2 of other electric components are crawled in the bumper. The harness can be fixed by the harness fixing portion 2.
[0049]
Also in the present embodiment, the shape of the harness fixing portion 2 may be the harness fixing portion 3 shown in FIG. 7 or the harness fixing portion 4 shown in FIG. Note that these descriptions are omitted because they are common to the second embodiment or the third embodiment.
[0050]
Further, the position where the harness fixing portion 2 is provided may be the housing rear portion 15a of the housing block 10B instead of the bezel member 10A. Also in this case, the shape of the harness fixing portion 2 may be the shape of the harness fixing portion 3 or the harness fixing portion 4.
[0051]
(Embodiment 5)
FIG. 9 shows an ultrasonic sensor C of the present embodiment. This ultrasonic sensor C is characterized in that the body 20 is composed of a back surface mounting frame 20A and a housing block 10B with respect to the ultrasonic sensor B of Embodiment 4, and the housing block 10B is equivalent. The same reference numerals are given and the description is omitted, and only the back mounting frame 20A which is a feature of the present embodiment will be described in detail.
[0052]
The back mounting frame 20A of the present embodiment extends so that the housing front portion 15b of the housing block 10B is inserted into the rear opening from the rear opening of the cylindrical body 21 and the body front 21b. The main body 21 is provided with extending pieces 23, 23 each having a locking hole 23a penetrating therethrough, and a flange 22 protruding from a front end edge of the body 21.
[0053]
A harness fixing portion 2 similar to that of the fourth embodiment is provided on the upper surface of the body portion 21. That is, one end of the cantilever 2a is supported on the upper surface of the body portion 21, and the locking claw 2b is protruded from the inner side surface of the tip of the cantilever 2a substantially parallel to the upper surface of the body portion 21 at a predetermined interval. I have.
[0054]
To mount the ultrasonic sensor C configured as described above on the bumper, similarly to the conventional ultrasonic sensor c shown in FIG. 14, the flange portion 22 of the rear mounting frame 20A is attached to the mounting hole on the rear surface x2 of the bumper X. After fixing the housing block 10B to the periphery of the opening by ultrasonic welding or the like, the housing block 10B is inserted into the back mounting frame 20A from the back x2 side of the bumper X, and the locking projections 16 provided on the upper and lower surfaces of the housing block 10B. The housing block 10B is fixed to the back mounting frame 20A by fitting the 16 into the engaging holes 23a, 23a provided in the back mounting frame 20A.
[0055]
At this time, the first and second ultrasonic vibrators face the outside from the mounting holes, and the housing block 10B is in a state of protruding toward the rear surface of the bumper.
[0056]
Also in the ultrasonic sensor C, similarly to the ultrasonic sensor B of the fourth embodiment, the harness h1 connected to the connector of the ultrasonic sensor C and the harness h2 of other electric components are crawled in the bumper. The harness can be fixed by the harness fixing portion 2.
[0057]
Also in the present embodiment, the shape of the harness fixing portion 2 may be the harness fixing portion 3 shown in FIG. 10 or the harness fixing portion 4 shown in FIG.
[0058]
Further, the position where the harness fixing portion 2 is provided may be the rear housing portion 15a of the housing block 10B instead of the rear mounting frame 20A. Also in this case, the shape of the harness fixing portion 2 may be the shape of the harness fixing portion 3 or the harness fixing portion 4.
[0059]
【The invention's effect】
The ultrasonic sensor according to claim 1, wherein the ultrasonic vibrator is housed, and the ultrasonic vibrator faces the outside from a mounting hole formed so as to penetrate the front and back surfaces of the bumper, and projects toward the rear surface of the bumper. Since it is provided with a body to be fixed and harness fixing means provided at a part of the body protruding on the back surface side of the bumper and fixing a harness crawl inside the bumper, after being attached to the bumper, the inside of the bumper There is an effect that the harness crawled on the side can be fixed.
[0060]
In the ultrasonic sensor according to the second aspect, in the invention according to the first aspect, the container body has a flange portion inserted into the mounting hole from a surface side of the bumper and protruding from a front end edge of the opening portion of the mounting hole. A bezel member to be fitted to the bumper in contact with the peripheral edge; and a housing block to house the ultrasonic vibrator and to be fitted to the bezel member from the back side of the bumper. , The harness can be fixed to the bezel member, so that the ultrasonic sensor according to claim 1 can be realized.
[0061]
An ultrasonic sensor according to a third aspect of the present invention is the ultrasonic sensor according to the first aspect, wherein the body houses a back mounting frame welded to a periphery of an opening of the mounting hole on a back surface of the bumper, and an ultrasonic transducer. The harness can be fixed to the back mounting frame because the housing block is fitted to the back mounting frame from the back side of the bumper and the harness fixing means is provided on the back mounting frame. This has the effect of realizing the ultrasonic sensor described above.
[0062]
In the ultrasonic sensor according to the fourth aspect, in the invention according to the second or third aspect, since the harness fixing means is provided in the housing block, the harness can be fixed to the housing block. This has the effect of realizing the ultrasonic sensor described above.
[0063]
According to a fifth aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means has one end supported on one surface of the body and substantially at a predetermined distance from one surface of the body. Since it is composed of a cantilever projecting in parallel and a locking claw projecting from the inner surface of the tip of the cantilever, the harness is directed in a direction substantially orthogonal to the cantilever, and the tip of the cantilever is There is an effect that a harness fixing means for pushing the harness from the side to the support side and preventing the harness from coming off by the locking claw can be realized.
[0064]
According to a sixth aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means projects from a cylindrical body portion through which the harness is inserted and outer peripheral edges of both ends of the body portion. A cylindrical member having a projection provided therein and a part of a ring having an inner diameter substantially equal to the outer diameter of the body portion are cut out, and the cutout is outwardly formed on one surface of the body. Since the holding member is attached, the harness is inserted into the tubular member, and the harness fixing means for fixing the harness by pushing the tubular member into the ring from the notch of the holding member has an effect. .
[0065]
According to a seventh aspect of the present invention, in the ultrasonic sensor according to any one of the first to fourth aspects, the harness fixing means includes a locking hole provided through a part of the body, and a locking hole provided in the locking hole. The harness is held by the harness holding means, and the harness is engaged with the locking hole to secure the harness. There is an effect that a harness fixing means for fixing can be realized.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an ultrasonic sensor according to a first embodiment.
FIG. 2 is a perspective view illustrating an ultrasonic sensor according to a second embodiment.
FIG. 3 is an enlarged view of a main part of the above.
FIG. 4 is a perspective view illustrating an ultrasonic sensor according to a third embodiment.
FIG. 5 is an enlarged view of a main part of the above.
FIG. 6 is a perspective view illustrating an ultrasonic sensor according to a fourth embodiment.
FIG. 7 is a perspective view showing another shape of the harness fixing portion of the above.
FIG. 8 is a perspective view showing still another shape of the harness fixing portion.
FIG. 9 is a perspective view illustrating an ultrasonic sensor according to a fifth embodiment.
FIG. 10 is a perspective view showing another shape of the harness fixing portion of the above.
FIG. 11 is a perspective view showing still another shape of the harness fixing portion.
FIG. 12 is a diagram schematically showing a state in which a conventional ultrasonic sensor is attached to a bumper.
FIG. 13 is a diagram schematically showing a state in which an ultrasonic sensor having another conventional structure is attached to a bumper.
FIG. 14 is a diagram schematically showing a state in which an ultrasonic sensor having another conventional structure is attached to a bumper.
[Explanation of symbols]
1 body
1a Rear part of body
1b Front of body
1c Flange
2 Harness fixing part
2a Cantilever
2b locking claw
3 Harness fixing part
3a cylindrical member
3aa body
3ab protrusion
3b Holding member
3ba ring
4 Harness holder
4a Lock hole
4b Locking member
4ba locking claw
4bb ring part
4bc base
10 Body
10A Bezel member
10B housing block
11 Body
12 Flange
13 Extension pieces
13a Lock hole
15a Rear of housing
15b Front of housing
16 convex
20 body
20A Back mounting frame
21 Body
22 Flange
23 Extension pieces
23a Lock hole
h1, h2 harness
AC ultrasonic sensor
X bumper

Claims

A housing body that houses the ultrasonic vibrator and exposes the ultrasonic vibrator to the outside through a mounting hole perforated to penetrate the front and back of the bumper, and is fixed by protruding to the back side of the bumper; An ultrasonic sensor comprising: a harness fixing means provided at a portion of the container protruding to the side and fixing a harness crawl in a bumper.

A bezel member fitted into the bumper by abutting a flange portion, which is inserted into the mounting hole from the front surface side of the bumper and protrudes from the front edge to the periphery of the opening of the mounting hole, and an ultrasonic wave; 2. The ultrasonic sensor according to claim 1, further comprising a housing block which accommodates a vibrator and is fitted to said bezel member from the back side of the bumper, and wherein said harness fixing means is provided in said bezel member.

The container body includes a back surface mounting frame welded to the periphery of the opening of the mounting hole on the back surface of the bumper, and a housing block that houses an ultrasonic vibrator and is fitted to the back surface mounting frame from the back surface side of the bumper. 2. The ultrasonic sensor according to claim 1, wherein said harness fixing means is provided on said back mounting frame.

The ultrasonic sensor according to claim 2, wherein the harness fixing means is provided on the housing block.

The harness fixing means includes a cantilever having one end supported on one surface of the body and protruding substantially in parallel with a surface of the body at a predetermined interval, and protruding from an inner surface of a tip of the cantilever. The ultrasonic sensor according to any one of claims 1 to 4, comprising a locking claw.

The harness fixing means is a cylindrical member having a cylindrical body portion into which the harness is inserted and protrusions protruding from outer peripheral edges of both ends of the body portion, and an outer diameter of the body portion substantially equal to that of the body portion. 5. A holding member attached to one surface of the container body, wherein a part of an annular ring having an inner diameter is cut out, and the notch faces outward. Ultrasonic sensor.

The harness fixing means includes a locking hole penetrating through a part of the body, and a locking member including locking means for locking the locking hole and holding means for holding the harness. The ultrasonic sensor according to claim 1, wherein: