JP2013136320A - Ultrasonic sensor - Google Patents

Ultrasonic sensor Download PDF

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JP2013136320A
JP2013136320A JP2011288754A JP2011288754A JP2013136320A JP 2013136320 A JP2013136320 A JP 2013136320A JP 2011288754 A JP2011288754 A JP 2011288754A JP 2011288754 A JP2011288754 A JP 2011288754A JP 2013136320 A JP2013136320 A JP 2013136320A
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Prior art keywords
bumper
sensor
ultrasonic sensor
mounting base
fixed
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JP2011288754A
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JP5938673B2 (en
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Takashi Tsuji
崇志 辻
Koji Nagano
康志 永野
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Panasonic Corp
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Panasonic Corp
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Priority to JP2011288754A priority Critical patent/JP5938673B2/en
Priority to PCT/JP2012/084148 priority patent/WO2013100142A1/en
Priority to US14/367,124 priority patent/US10288730B2/en
Priority to EP12863677.6A priority patent/EP2799900A4/en
Priority to CN201280020970.7A priority patent/CN103502840B/en
Publication of JP2013136320A publication Critical patent/JP2013136320A/en
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  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an ultrasonic sensor which can improve appearance while being attached to a bumper.SOLUTION: An ultrasonic sensor includes: a mount 2 affixed to an inner surface of a bumper 1; and a sensor body 3 joined to the mount 2 through an exposure hole 11 provided in the bumper 1. Compared to when the ultrasonic sensor is affixed to the bumper 1 by sandwiching the bumper 1 from inner and outer sides, the ultrasonic sensor need not protrude outside the bumper 1, thereby improving appearance thereof.

Description

本発明は、超音波センサに関するものである。   The present invention relates to an ultrasonic sensor.

従来から、超音波を送信するとともに障害物で反射された超音波を受信する超音波センサが提供されている。この種の超音波センサとしては、例えば、受信された超音波におけるドップラーシフトに基づいて障害物の有無を判定するドップラーセンサなどがある。   Conventionally, an ultrasonic sensor that transmits ultrasonic waves and receives ultrasonic waves reflected by an obstacle has been provided. Examples of this type of ultrasonic sensor include a Doppler sensor that determines the presence or absence of an obstacle based on a Doppler shift in received ultrasonic waves.

さらに、上記の超音波センサとして、図１０に示すように、自動車のバンパー１に取り付けて用いられるものがある（例えば、特許文献１参照）。   Further, as the above-described ultrasonic sensor, there is one used by being attached to a bumper 1 of an automobile as shown in FIG. 10 (see, for example, Patent Document 1).

詳しく説明すると、図１０の超音波センサは、バンパー１に設けられた露出穴１１に挿通される形でバンパー１に固定されるものであって、バンパー１の外面側（図１０での左側）から露出穴１１に挿入される外側ブロック９１と、バンパー１の内面側（図１０での右側）から外側ブロック９１に結合する内側ブロック９２とを備える。すなわち、外側ブロック９１と内側ブロック９２とが間にバンパー１を挟む形で結合することで、上記の超音波センサはバンパー１に対して固定される。   More specifically, the ultrasonic sensor of FIG. 10 is fixed to the bumper 1 so as to be inserted into the exposure hole 11 provided in the bumper 1, and the outer surface side of the bumper 1 (left side in FIG. 10). The outer block 91 is inserted into the exposure hole 11 from the inner side, and the inner block 92 is coupled to the outer block 91 from the inner surface side (right side in FIG. 10) of the bumper 1. In other words, the ultrasonic sensor is fixed to the bumper 1 by coupling the outer block 91 and the inner block 92 with the bumper 1 interposed therebetween.

特開２０１０−１９４４４１号公報JP 2010-194441 A

しかしながら、図１０のように外側ブロック９１と内側ブロック９２との間にバンパー１を挟む構造では、外側ブロック９１の一部がバンパー１の外面側（図１０での左側）に突出してしまうため、バンパー１に取り付けられた状態での見栄えが悪かった。   However, in the structure in which the bumper 1 is sandwiched between the outer block 91 and the inner block 92 as shown in FIG. 10, a part of the outer block 91 protrudes to the outer surface side (left side in FIG. 10). The appearance when attached to the bumper 1 was poor.

本発明は、上記事由に鑑みて為されたものであり、その目的は、バンパーに取り付けられた状態での見栄えの改善が可能な超音波センサを提供することにある。   The present invention has been made in view of the above reasons, and an object of the present invention is to provide an ultrasonic sensor capable of improving the appearance when attached to a bumper.

本発明の超音波センサは、バンパーの内面に固定される取付台と、超音波を送信する送信手段と超音波を受信する受信手段との少なくとも一方を保持し前記バンパーに設けられた露出穴に挿通されて前記取付台に結合するセンサ本体とを備えることを特徴とする。   The ultrasonic sensor of the present invention holds at least one of a mounting base fixed to the inner surface of the bumper, a transmitting means for transmitting ultrasonic waves, and a receiving means for receiving ultrasonic waves, and is provided in an exposed hole provided in the bumper. And a sensor main body that is inserted and coupled to the mounting base.

上記の超音波センサにおいて、前記取付台は、貼着とカシメ止めとねじ止めとのいずれかによって前記バンパーに固定されることが望ましい。   In the ultrasonic sensor, it is preferable that the mounting base is fixed to the bumper by any one of sticking, caulking, and screwing.

また、上記の超音波センサにおいて、前記取付台は、前記バンパーに対して固定される固定部と、操作力を受けて前記固定部に対して弾性的に揺動可能なクリップ部とを有し、前記クリップ部と、前記センサ本体の外面とには、前記固定部に対する前記クリップ部の揺動に伴って互いに係脱する凹凸が設けられていることが望ましい。   Further, in the above ultrasonic sensor, the mounting base includes a fixing portion that is fixed to the bumper, and a clip portion that is elastically swingable with respect to the fixing portion by receiving an operating force. Preferably, the clip portion and the outer surface of the sensor body are provided with irregularities that engage and disengage with each other as the clip portion swings with respect to the fixed portion.

さらに、上記の超音波センサにおいて、前記センサ本体の外周面において、バンパーの外側に向けられる端部は、弾性材料で構成され、且つ、バンパーの外面に平行な断面での断面形状をバンパーの外側へ向かって大きくするように傾斜していることが望ましい。   Further, in the above ultrasonic sensor, an end portion of the outer peripheral surface of the sensor body that is directed to the outside of the bumper is made of an elastic material and has a cross-sectional shape in a cross section parallel to the outer surface of the bumper. It is desirable to incline so that it may become large toward.

また、上記の超音波センサにおいて、前記センサ本体において前記バンパーの外側から見て露出する部位は前記バンパーの外面と同じ色とされていることが望ましい。   In the ultrasonic sensor described above, it is preferable that a portion of the sensor body exposed when viewed from the outside of the bumper has the same color as the outer surface of the bumper.

本発明によれば、バンパーを内外から挟むことでバンパーに対して固定される場合に比べ、バンパーの外側に突出させる必要がないことにより、見栄えの改善が可能となる。   According to the present invention, it is not necessary to project the bumper to the outside as compared with the case where the bumper is fixed to the bumper by sandwiching the bumper from inside and outside, so that the appearance can be improved.

本発明の実施形態を示す断面図である。It is sectional drawing which shows embodiment of this invention. 同上のセンサ本体を示す分解斜視図である。It is a disassembled perspective view which shows a sensor main body same as the above. 同上を示す分解斜視図である。It is a disassembled perspective view which shows the same as the above. 同上を示す、図３における下方から見た分解斜視図である。FIG. 4 is an exploded perspective view showing the same as seen from below in FIG. 3. 取付台をバンパーに固定する方法の一例を示す断面図である。It is sectional drawing which shows an example of the method of fixing a mounting base to a bumper. （ａ）（ｂ）はそれぞれ取付台をバンパーに固定する方法の別の例を示す断面図であり、（ａ）は固定の過程を示し、（ｂ）は固定が完了した状態を示す。(A) (b) is sectional drawing which shows another example of the method of fixing a mounting base to a bumper, (a) shows the process of fixing, (b) shows the state which fixing was completed. 取付台をバンパーに固定する方法の更に別の例を示す断面図である。It is sectional drawing which shows another example of the method of fixing a mounting base to a bumper. （ａ）（ｂ）はそれぞれセンサ本体を取付台に結合させる方法を示す断面図であり、（ａ）は結合の過程を示し、（ｂ）は結合が完了した状態を示す。(A) (b) is sectional drawing which respectively shows the method of couple | bonding a sensor main body with a mount, (a) shows the process of coupling | bonding, (b) shows the state which coupling | bonding was completed. 同上のバンパーへの取り付けが完了した状態を示す左側面図である。It is a left view which shows the state which the attachment to a bumper same as the above was completed. 従来例を示す断面図である。It is sectional drawing which shows a prior art example.

以下、本発明を実施するための最良の形態について、図面を参照しながら説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

本実施形態は、車両（図示せず）に搭載されて車両の進行方向の障害物を検出するものであり、超音波が送受信される方向を車両の前方又は後方に向けて取り付けられる。   The present embodiment is mounted on a vehicle (not shown) to detect an obstacle in the traveling direction of the vehicle, and is attached with the direction in which ultrasonic waves are transmitted and received directed toward the front or rear of the vehicle.

本実施形態は、図１に示すように、車両のバンパー１の内面に固定される取付台２と、超音波を送受信する送信手段及び受信手段としての圧電素子を保持しバンパー１に設けられた露出穴１１に挿通されて取付台２に結合するセンサ本体３とを備える。センサ本体３は、図１での左方に超音波を送信するとともに、図１での左方からの超音波を受信する。以下、上下左右は図１を基準とし、図１の紙面に直交する方向を前後方向と呼ぶ。   In this embodiment, as shown in FIG. 1, a mounting base 2 fixed to the inner surface of a bumper 1 of a vehicle, a transmitting element for transmitting and receiving ultrasonic waves, and a piezoelectric element as a receiving means are provided on the bumper 1. And a sensor body 3 that is inserted into the exposure hole 11 and is coupled to the mount 2. The sensor body 3 transmits ultrasonic waves to the left in FIG. 1 and receives ultrasonic waves from the left in FIG. Hereinafter, the vertical and horizontal directions are based on FIG. 1, and the direction perpendicular to the paper surface of FIG.

センサ本体３は、図２に示すように、圧電素子を有する円柱形状の送受信ブロック４と、送受信ブロック４の外周面を覆う筒状の保持ゴム５と、保持ゴム５を装着された送受信ブロック４が嵌め込まれるボディ６とを備える。   As shown in FIG. 2, the sensor body 3 includes a cylindrical transmission / reception block 4 having a piezoelectric element, a cylindrical holding rubber 5 covering the outer peripheral surface of the transmission / reception block 4, and a transmission / reception block 4 to which the holding rubber 5 is attached. And a body 6 into which is fitted.

送受信ブロック４は、例えば、軸方向を左右方向に向けて右面が開口した有底円筒形状の金属からなるケースの内底面に圧電素子が固着されるとともにケース内に充填材が充填されたものであり、超音波は送受信ブロック４の左面において入射及び出射する。   The transmission / reception block 4 is, for example, one in which a piezoelectric element is fixed to the inner bottom surface of a case made of a metal with a bottomed cylindrical shape whose right surface is opened with the axial direction directed in the left-right direction and the case is filled with a filler. Yes, the ultrasonic wave enters and exits on the left surface of the transmission / reception block 4.

保持ゴム５の材料としては例えば合成ゴムやエラストマのような弾性材料を用いることができる。保持ゴム５は、軸方向を左右方向に向けた円筒形状であって送受信ブロック４を囲む本体部５１と、本体部５１の左端部（すなわちバンパー１の外側に向けられる端部）から径方向の外向きに突設された鍔部５２とを有する。鍔部５２はボディ６の左端面の左側に位置する。鍔部５２の外周面は、左方に向かって（つまり、バンパー１の外側へ向かって）外径を大きくするように（つまり、バンパー１の外面に平行な断面での断面形状を大きくするように）傾斜した円錐台形状となっている。   As the material of the holding rubber 5, for example, an elastic material such as synthetic rubber or elastomer can be used. The holding rubber 5 has a cylindrical shape in which the axial direction is directed to the left and right direction and surrounds the transmission / reception block 4 and a radial direction from the left end of the main body 51 (that is, the end directed to the outside of the bumper 1). And a flange portion 52 protruding outward. The flange 52 is located on the left side of the left end surface of the body 6. The outer peripheral surface of the flange 52 has a larger outer diameter toward the left (that is, toward the outside of the bumper 1) (that is, a larger cross-sectional shape in a section parallel to the outer surface of the bumper 1). Ii) It has an inclined truncated cone shape.

ボディ６は例えば合成樹脂からなり、左右両端が開口して保持ゴム５の外周面を覆う筒形状の本体部６１と、本体部６１の右端部から下方に突設されたコネクタ部６２とを有する。本体部６１には、圧電素子に電気的に接続されて増幅やノイズ除去といった適宜の信号処理を行う信号処理回路（図示せず）が収納される。また、コネクタ部６２は、軸方向を上下方向に向けた筒形状であって、導電材料からなり上記の信号処理回路に電気的に接続された複数個のコンタクト（図示せず）が内側に露出する。上記の信号処理回路は、上記のコンタクトに一対一に接触導通する複数個の接触子を有してコネクタ部６２に挿入接続されるプラグ（図示せず）を用いて、外部回路に電気的に接続される。   The body 6 is made of, for example, synthetic resin, and has a cylindrical main body portion 61 that opens at both left and right ends and covers the outer peripheral surface of the holding rubber 5, and a connector portion 62 that projects downward from the right end portion of the main body portion 61. . The main body 61 houses a signal processing circuit (not shown) that is electrically connected to the piezoelectric element and performs appropriate signal processing such as amplification and noise removal. The connector portion 62 has a cylindrical shape whose axial direction is directed vertically, and a plurality of contacts (not shown) made of a conductive material and electrically connected to the signal processing circuit are exposed to the inside. To do. The above signal processing circuit is electrically connected to an external circuit by using a plug (not shown) having a plurality of contacts that are in one-to-one contact with the above contacts and inserted and connected to the connector portion 62. Connected.

また、センサ本体３は、ボディ６に結合して本体部６１の右側の開口を閉塞するカバー７を備える。カバー７は例えば合成樹脂からなり、厚さ方向を左右方向に向けた板状の本体部７１と、本体部７１の前後両端からそれぞれ左方に突設され先端部が前後方向の外向きに曲がった結合爪７２とを有する。ボディ６の本体部６１の右端部の前後両側には、それぞれ、本体部６１の内外に連通した結合穴６３が設けられており、この結合穴６３に１個ずつの結合爪７２の先端部が係入することで、ボディ６とカバー７とは互いに結合する。   The sensor body 3 includes a cover 7 that is coupled to the body 6 and closes the opening on the right side of the body portion 61. The cover 7 is made of, for example, a synthetic resin, and has a plate-like main body 71 whose thickness direction is directed in the left-right direction, and protrudes to the left from both front and rear ends of the main body 71, and the tip is bent outward in the front-rear direction. And a connecting claw 72. On both the front and rear sides of the right end portion of the body portion 61 of the body 6, there are provided coupling holes 63 communicating with the inside and outside of the body portion 61, and the distal ends of the coupling claws 72 are connected to the coupling holes 63. By engaging, the body 6 and the cover 7 are mutually coupled.

次に、取付台２について説明する。取付台２は、図３及び図４に示すように、センサ本体３を保持する保持部２１と、保持部２の左端部から上下両側にそれぞれ突出しバンパー１の内面に固定される固定部２２とを有する。   Next, the mounting base 2 will be described. As shown in FIGS. 3 and 4, the mounting base 2 includes a holding portion 21 that holds the sensor body 3, and a fixing portion 22 that protrudes from the left end of the holding portion 2 to both the upper and lower sides and is fixed to the inner surface of the bumper 1. Have

固定部２２をバンパー１の内面に固定する固定手段としては、例えば、図５に示すように周知の粘着シート８１による貼着を用いることができる。また、固定手段としては、図６に示すようにバンパー１の内面に突設されたカシメ凸部１２を固定部２２に設けられた挿通穴２２１に挿通してカシメる（つまり、挿通穴２２１から抜けないようにカシメ凸部１２の先端部を熱や圧力によって塑性変形させる）というカシメ止めを用いてよい。または、固定手段として、図７に示すように固定部２２の挿通穴２２１に挿通されてバンパー１に螺合するねじ８２によるねじ止めを用いてもよい。図７の例では、内周面にねじ溝が設けられた筒形状であってそれぞれねじ８２が螺合するねじ止め凸部１３が、バンパー１の内面側に複数個突設されている。   As a fixing means for fixing the fixing portion 22 to the inner surface of the bumper 1, for example, sticking with a well-known adhesive sheet 81 can be used as shown in FIG. Further, as the fixing means, as shown in FIG. 6, the caulking convex portion 12 protruding from the inner surface of the bumper 1 is inserted into the insertion hole 221 provided in the fixing portion 22 to be caulked (that is, from the insertion hole 221. A caulking stop may be used, in which the tip of the caulking convex portion 12 is plastically deformed by heat or pressure so as not to come off. Alternatively, as the fixing means, as shown in FIG. 7, screwing with a screw 82 that is inserted into the insertion hole 221 of the fixing portion 22 and screwed into the bumper 1 may be used. In the example of FIG. 7, a plurality of screw projections 13 each having a cylindrical shape with an inner circumferential surface provided with a screw groove and screwed with screws 82 are provided on the inner surface side of the bumper 1.

保持部２１は、前後方向においてセンサ本体３を挟む２個の挟み部２３と、２個の挟み部２３の右上端部間と左上端部間とにそれぞれ架設されて挟み部２３間の距離を維持する２個の連結部２４とを有する。さらに、保持部２１は、挟み部２３に対して弾性的に揺動可能に連結されたクリップ部２５を、センサ本体３を挟む前後両側にそれぞれ有する。各クリップ部２５は、それぞれ、左右に長い形状であって、弾性変形可能なバネ部２６を介して左右方向の中央部が挟み部２３に連結されることで、挟み部２３に対して（つまり固定部２２に対して）弾性的に揺動可能となっている。また、各クリップ部２５は、バネ部２６が弾性復帰した状態で左端部を他の部位よりも前後方向の内側に（つまりセンサ本体３の近くに）位置させる段２５１を有し、段２５１の左側には係合穴２５０が設けられている。さらに、センサ本体３において本体部６１の前後両面には、それぞれ、係合凸部３１が突設されている。   The holding portion 21 is installed between the two sandwiching portions 23 sandwiching the sensor body 3 in the front-rear direction, and between the upper right end portion and the upper left end portion of the two sandwiching portions 23, and the distance between the sandwiching portions 23 is set. And two connecting portions 24 to be maintained. Furthermore, the holding part 21 has the clip part 25 connected with respect to the clamping part 23 so that rocking elastically was possible on both the front and back sides which pinch | interpose the sensor main body 3, respectively. Each clip portion 25 has a shape that is long to the left and right, and a central portion in the left-right direction is connected to the sandwiching portion 23 via a spring portion 26 that can be elastically deformed. It can swing elastically (with respect to the fixed part 22). Further, each clip portion 25 has a step 251 that positions the left end portion in the front-rear direction inner side (that is, near the sensor body 3) than other portions in a state where the spring portion 26 is elastically restored. An engagement hole 250 is provided on the left side. Further, on the front and rear surfaces of the main body 61 in the sensor main body 3, engagement convex portions 31 are provided to project.

センサ本体３を取付台２に結合させる際には、図８（ａ）に矢印Ａ１で示すように各クリップ部２５の右端部に前後方向（図８での上下方向）の内向きの押力を加えて揺動させる。次に、センサ本体３の係合凸部３１の位置と係合穴２５０の位置とを合わせ、この状態で、上記の押力を解除する。すると、図８（ｂ）に示すように各クリップ部２５がそれぞれ復帰して各係合凸部３１がそれぞれ係合穴２５０に係入し、ここにおいてセンサ本体３と取付台２との結合が完了する。   When the sensor body 3 is coupled to the mounting base 2, an inward pressing force in the front-rear direction (vertical direction in FIG. 8) is applied to the right end of each clip portion 25 as indicated by an arrow A1 in FIG. Add and rock. Next, the position of the engagement convex portion 31 of the sensor body 3 and the position of the engagement hole 250 are matched, and in this state, the above pressing force is released. Then, as shown in FIG. 8 (b), the respective clip portions 25 are restored, and the respective engagement convex portions 31 are respectively engaged with the engagement holes 250. Here, the connection between the sensor body 3 and the mounting base 2 is established. Complete.

本実施形態をバンパー１に取り付けるには、まず、取付台２をバンパー１の露出穴１１の位置に合わせてバンパー１の内面に固定する。次に、センサ本体３を取付台２に結合させる。このとき、センサ本体３はバンパー１の外側から露出穴１１に挿通することができる。具体的には、センサ本体３を図１の状態から反時計回りに９０度程度回転した向きとして、バンパー１の外側からまずコネクタ部６２を露出穴１１に挿入し、その後にセンサ本体３をバンパー１及び取付台２に対して前方から見て時計回りに回転させれば、コネクタ部６２に続いて本体部６１も露出穴１１に導入することができる。その後、センサ本体３をバンパー１及び取付台２に対して右方へ押し込んで各係合凸部３１をそれぞれ係合穴２５０に係入させればよい。上記のように取付台２をバンパー１の内面に固定した後でセンサ本体３をバンパー１の外側から露出穴１１に挿通して取付台２に取り付ければ、センタ本体３を取付台２に結合させた状態で取付台２をバンパー１の内面に固定する場合に比べ、センサ本体３においてバンパー１の露出穴１１内に露出する面である左面に傷がつきにくくなる。なお、凹凸を上記とは逆転させ、センサ本体３の外面に設けた係合穴にクリップ部２５に設けられた係合凸部を係入させるような構造とすることも可能である。   In order to attach the present embodiment to the bumper 1, first, the mounting base 2 is fixed to the inner surface of the bumper 1 in accordance with the position of the exposed hole 11 of the bumper 1. Next, the sensor body 3 is coupled to the mount 2. At this time, the sensor body 3 can be inserted into the exposure hole 11 from the outside of the bumper 1. Specifically, the sensor body 3 is rotated about 90 degrees counterclockwise from the state shown in FIG. 1, and the connector portion 62 is first inserted into the exposed hole 11 from the outside of the bumper 1. The main body 61 can also be introduced into the exposure hole 11 following the connector 62 by rotating clockwise with respect to 1 and the mount 2 as viewed from the front. Thereafter, the sensor main body 3 may be pushed rightward with respect to the bumper 1 and the mounting base 2 so that the respective engagement convex portions 31 are engaged with the respective engagement holes 250. After fixing the mounting base 2 to the inner surface of the bumper 1 as described above, if the sensor main body 3 is inserted into the exposure hole 11 from the outside of the bumper 1 and attached to the mounting base 2, the center main body 3 is coupled to the mounting base 2. Compared to the case where the mounting base 2 is fixed to the inner surface of the bumper 1 in a state where the sensor is mounted, the left surface of the sensor body 3 that is exposed in the exposure hole 11 of the bumper 1 is less likely to be damaged. It is also possible to adopt a structure in which the projections and depressions provided on the clip portion 25 are engaged with the engagement holes provided on the outer surface of the sensor body 3 by reversing the projections and depressions.

ここで、取付台２とセンサ本体３とが互いに結合した状態での取付台２の左方へのセンサ本体３の突出量は、取付が想定されるバンパー１の厚さ寸法（図１での左右方向の寸法）と同程度とされている。すなわち、本実施形態がバンパー１に取り付けられた状態では、バンパー１の外面（左面）と、センサ本体３の左面とが略面一となる。   Here, the protruding amount of the sensor body 3 to the left of the mount 2 in a state where the mount 2 and the sensor body 3 are coupled to each other is the thickness dimension of the bumper 1 that is assumed to be mounted (in FIG. The dimension in the horizontal direction) is approximately the same. That is, when the present embodiment is attached to the bumper 1, the outer surface (left surface) of the bumper 1 and the left surface of the sensor body 3 are substantially flush.

また、露出穴１１の大きさが適切であれば、本実施形態がバンパー１に取り付けられた状態において、図９に示すように、保持ゴム５の鍔部５２が露出穴１１の内周面に弾接する。   Further, if the size of the exposed hole 11 is appropriate, the flange portion 52 of the holding rubber 5 is formed on the inner peripheral surface of the exposed hole 11 as shown in FIG. Elastic contact.

上記構成によれば、図１０の従来例のようにバンパー１を内外から挟むことでバンパー１に対して固定される場合に比べ、バンパー１の外側に突出させる必要がないことにより、見栄えの改善が可能となる。   According to the above configuration, it is not necessary to project outside the bumper 1 as compared to the case where the bumper 1 is fixed to the bumper 1 by sandwiching the bumper 1 from inside and outside as in the conventional example of FIG. Is possible.

なお、バンパー１に取り付けられた状態での見栄えを改善するためには、センサ本体３においてバンパー１の外側から見て露出穴１１内に露出する部位は、バンパー１の外面と同じ色とされることが望ましい。すなわち、取り付けられるバンパー１の色が決まっている場合には、その色と同じ色に、本体ブロック４及び保持ゴム５を着色ないし塗装する。   In addition, in order to improve the appearance in the state attached to the bumper 1, the site | part exposed in the exposure hole 11 seeing from the outer side of the bumper 1 in the sensor main body 3 is made into the same color as the outer surface of the bumper 1. It is desirable. That is, when the color of the bumper 1 to be attached is determined, the main body block 4 and the holding rubber 5 are colored or painted in the same color as that color.

１ バンパー
２ 取付台
３ センサ本体
１１ 露出穴
２２ 固定部
２５ クリップ部
３１ 係合凸部（互いに係合する凹凸）
２５０ 係合穴（互いに係脱する凹凸） DESCRIPTION OF SYMBOLS 1 Bumper 2 Mounting stand 3 Sensor main body 11 Exposed hole 22 Fixed part 25 Clip part 31 Engagement convex part (concave / convex to mutually engage)
250 engagement hole (unevenness that engages and disengages each other)

Claims (5)

バンパーの内面に固定される取付台と、
超音波を送信する送信手段と超音波を受信する受信手段との少なくとも一方を保持し前記バンパーに設けられた露出穴に挿通されて前記取付台に結合するセンサ本体とを備えることを特徴とする超音波センサ。 A mounting base fixed to the inner surface of the bumper;
A sensor main body that holds at least one of a transmitting unit that transmits ultrasonic waves and a receiving unit that receives ultrasonic waves, and is inserted into an exposure hole provided in the bumper and coupled to the mounting base. Ultrasonic sensor. 前記取付台は、貼着とカシメ止めとねじ止めとのいずれかによって前記バンパーに固定されることを特徴とする請求項１記載の超音波センサ。   The ultrasonic sensor according to claim 1, wherein the mounting base is fixed to the bumper by any one of sticking, caulking, and screwing. 前記取付台は、前記バンパーに対して固定される固定部と、操作力を受けて前記固定部に対して弾性的に揺動可能なクリップ部とを有し、
前記クリップ部と、前記センサ本体の外面とには、前記固定部に対する前記クリップ部の揺動に伴って互いに係脱する凹凸が設けられていることを特徴とする請求項１又は請求項２記載の超音波センサ。 The mounting base includes a fixing portion that is fixed to the bumper, and a clip portion that is elastically swingable with respect to the fixing portion under an operating force,
The unevenness which mutually engages / disengages with the said clip part and the outer surface of the said sensor main body with the rocking | fluctuation of the said clip part with respect to the said fixing | fixed part is provided. Ultrasonic sensor. 前記センサ本体の外周面において、バンパーの外側に向けられる端部は、弾性材料で構成され、且つ、バンパーの外面に平行な断面での断面形状をバンパーの外側へ向かって大きくするように傾斜していることを特徴とする請求項１〜３のいずれか１項に記載の超音波センサ。   In the outer peripheral surface of the sensor body, an end portion directed to the outside of the bumper is made of an elastic material, and is inclined so that a cross-sectional shape in a cross section parallel to the outer surface of the bumper increases toward the outside of the bumper. The ultrasonic sensor according to any one of claims 1 to 3, wherein the ultrasonic sensor is provided. 前記センサ本体において前記バンパーの外側から見て露出する部位は前記バンパーの外面と同じ色とされていることを特徴とする請求項１〜４のいずれか１項に記載の超音波センサ。   The ultrasonic sensor according to any one of claims 1 to 4, wherein a portion of the sensor body exposed when viewed from the outside of the bumper has the same color as an outer surface of the bumper.
JP2011288754A 2011-12-28 2011-12-28 Ultrasonic sensor Expired - Fee Related JP5938673B2 (en)

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