WO2011089644A1 - 超音波センサおよび超音波センサの取り付け方法 - Google Patents
超音波センサおよび超音波センサの取り付け方法 Download PDFInfo
- Publication number
- WO2011089644A1 WO2011089644A1 PCT/JP2010/000319 JP2010000319W WO2011089644A1 WO 2011089644 A1 WO2011089644 A1 WO 2011089644A1 JP 2010000319 W JP2010000319 W JP 2010000319W WO 2011089644 A1 WO2011089644 A1 WO 2011089644A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ultrasonic sensor
- bumper
- acoustic impedance
- ultrasonic
- metal case
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
- B60R19/483—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
- G01S7/521—Constructional features
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/88—Sonar systems specially adapted for specific applications
- G01S15/93—Sonar systems specially adapted for specific applications for anti-collision purposes
- G01S15/931—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles
- G01S2015/937—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details
- G01S2015/938—Sonar systems specially adapted for specific applications for anti-collision purposes of land vehicles sensor installation details in the bumper area
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- the present invention relates to an ultrasonic sensor and a method for attaching the ultrasonic sensor to a back surface of a bumper.
- Patent Documents 1 to 3 Conventional ultrasonic sensors of this type include those disclosed in Patent Documents 1 to 3, for example.
- the one disclosed in Patent Document 1 is provided with a recess (recessed portion) on the back surface of the bumper, and the ceramic 8 that generates ultrasonic waves, the metal base 9 and the pressing cover 27 or the pressing plate spring 34 is not in contact with the metal base 9.
- One surface hereinafter referred to as the ceramic surface
- the ceramic surface is pressed against the recessed surface on the back side of the bumper.
- Patent Document 2 discloses a structure in which a concave portion is formed in a bumper, and a vibration surface of an ultrasonic element is directly adhered and adhered and fixed with an adhesive. Moreover, what was disclosed by patent document 3 is a structure which provides a projection part in the bottom part (transmission surface) of an ultrasonic sensor, and makes this projection part contact an attachment member.
- Patent Document 1 has a drawback in that the contact state between the back surface of the bumper and the ceramic surface is not uniform, so that an air layer is formed and the transmission efficiency of ultrasonic waves is lowered.
- the surface accuracy of the recessed surface on the back surface of the bumper is poor, there is a problem that transmission efficiency varies greatly.
- the transmission range of the ultrasonic wave is narrowed at the protrusion and the desired directivity is ensured, but the bonding method is not clear.
- the mass of the vibration part increases, so that the resonance frequency (ultrasonic transmission frequency) is likely to vary, and there is a problem that it varies depending on the fixing conditions.
- the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an ultrasonic sensor and a method for attaching the ultrasonic sensor that can improve and stabilize the transmission efficiency with little variation in the resonance frequency.
- matching members smaller than the acoustic impedances of the bumper and the ultrasonic sensor are provided on the ultrasonic transmission surface.
- the ultrasonic transmission surface of the ultrasonic sensor, the matching member, the bumper, and the acoustic impedance in the air have the following relationship.
- the ultrasonic sensor is disposed at a predetermined position on the back surface of the bumper, the flange portion of the metal case that is a component of the ultrasonic sensor is pressed with a fixing member, and the pressed state
- the fixing member is fixed to the bumper.
- the ultrasonic sensor of the present invention since the matching member smaller than the acoustic impedance of each of the bumper and the ultrasonic sensor is provided on the ultrasonic transmission surface, the ultrasonic sensor is provided on the back surface of the bumper without providing a through hole in the bumper. It can be installed directly to detect obstacles and the ultrasonic sensor is not exposed to the bumper skin, improving the design of the bumper.
- the alignment member is sandwiched between the opposing surfaces of the ultrasonic sensor and the bumper, indirect adhesion between the two is improved, and variation in transmission efficiency can be reduced.
- the ultrasonic transmission surface of the ultrasonic sensor, the matching member, the bumper, and the acoustic impedance in the air have the following relationship, so the transmission / reception efficiency of the ultrasonic wave is improved.
- the ultrasonic sensor is disposed at a predetermined position on the back surface of the bumper, the flange portion of the metal case that is a component of the ultrasonic sensor is pressed with a fixing member, and the pressed state Since the fixing member is fixed to the bumper, the distance between the back surface of the bumper and the ultrasonic transmission surface of the ultrasonic sensor, that is, the thickness of the matching member is constant. In addition, since the pressurized state can be managed, the transmission / reception efficiency of ultrasonic waves is stabilized and the reliability is improved. *
- FIG. 1 is a plan view of an alignment member used in the ultrasonic sensor according to Embodiment 1.
- FIG. is sectional drawing which shows the state which attached the ultrasonic sensor by Embodiment 2 of this invention to the bumper back surface.
- FIG. 6 is a plan view of an alignment member used in an ultrasonic sensor according to Embodiment 3.
- FIG. FIG. 1 is a principle diagram showing an ultrasonic sensor according to the present invention, in which a PZT (lead zirconate titanate) 2 is provided in the center of the bottom of a cup-shaped metal case 1 and is closely attached to the relative surface of the metal case 1 and the bumper 4
- the matching member 3 is smaller than the respective acoustic impedances.
- ultrasonic waves emitted from the transmission / reception surface of the metal case 1 pass through the alignment member 3 and the bumper 4 and travel in the direction of arrow a. Then, the reflected wave reflected upon hitting an obstacle (not shown) travels in the direction of arrow b, passes through the matching member 3 and the bumper 4 and enters the PZT 2 from the receiving surface of the metal case 1.
- the ultrasonic transmission surface of the ultrasonic sensor, the matching member, the bumper, and the acoustic impedance in the air have the following relationship.
- FIG. 2 shows a state in which the ultrasonic sensor according to the first embodiment is attached to the back surface of the bumper.
- the alignment member 3 is fitted into the concave portion 4a formed on the back surface of the bumper 4 so that the flange portion 1a of the metal case 1 is attached.
- the fixing ring 6 having a hole 6b through which the metal case 1 passes is fitted in the metal case, and the fixing ring 6 is bumpered in a state where the flange portion 6a around the hole 6b is in contact with the flange portion 1a of the metal case 1. 4 is adhered and fixed to the back surface of the adhesive 4 with an adhesive 7
- the matching member 3 is composed of matching members 3a and 3b having two types of acoustic impedances, and the acoustic impedances of the matching members 3a and 3b are in the following relationship.
- Z21 >> Z22
- Z21 Acoustic impedance of the first matching member in the central portion
- Z22 Acoustic impedance of the second matching member in the peripheral portion
- defoamed silicone is used for the first alignment member 3a in the central portion
- polystyrene foam or foamed silicone is used for the second alignment member 3b in the peripheral portion.
- it is the material of the same quality, it can implement
- it is even better if the alignment member 3 has adhesion and thixotropy (a material whose shape change due to surface tension is small).
- the shape of the contact surface between the first alignment member 3a and the back surface of the bumper 4 has an aspect ratio.
- 3 (a), (b), and (c) are obtained by changing the shape of the first alignment member 3a in the central portion relative to the second alignment member 3b in the peripheral portion, and FIG. FIG. 3B is an oval shape, and FIG. 3C is a circular shape, each having a different aspect ratio with the contact surface with the back surface of the bumper 4.
- the second alignment member 3b in the peripheral portion is mixed with a round or polygonal solid material 5, such as glass or metal, at substantially equal intervals.
- the ultrasonic sensor can be directly attached to the back surface of the bumper 4 without providing a through hole in the bumper 4, an obstacle can be detected. Is not exposed and the design of the bumper 4 is improved.
- the acoustic impedance Z1 of the transmission surface (metal case) of the ultrasonic sensor, the acoustic impedance Z2 of the matching member, the acoustic impedance Z3 of the bumper 4, and the acoustic impedance Zair in the air are expressed as Z1> Z2 ⁇ Z3.
- Z2> Zair With this relationship, the transmission / reception efficiency of ultrasonic waves can be improved.
- the matching member 3 is composed of a central first matching member 3a having two types of acoustic impedance and a peripheral second matching member 3b, and the acoustic impedance Z21 of the central first matching member 3a.
- the acoustic impedance Z22 of the second matching member 3b in the periphery is Z21 >> Z22 With this relationship, the transmission / reception efficiency of ultrasonic waves can be increased and the directivity of ultrasonic waves can be changed.
- the relationship between the acoustic impedance Z1 of the transmission surface (metal case) of the ultrasonic sensor, the acoustic impedance Z2 of the matching member, the acoustic impedance Z3 of the bumper 4, and the acoustic impedance Zair in the air Z1>Z2> Z3 Or Z1 ⁇ Z2 ⁇ Z3 But it ’s okay.
- the distance between the back surface of the bumper 4 and the ultrasonic transmission surface of the metal case 1, that is, the thickness of the matching member 3 is constant, so that the transmission and reception efficiency of ultrasonic waves is stable. Reliability is improved.
- FIG. FIG. 4 shows a state in which the ultrasonic sensor according to the second embodiment of the present invention is attached to the back surface of the bumper 4, and the second alignment member 3b in the peripheral portion is formed in a cup shape, A structure (cap structure) is provided that covers the sound wave transmitting / receiving surface.
- the second embodiment since the ultrasonic transmission / reception surface of the metal case 1 is covered with the second alignment member 3b, it is easy to attach the rear surface of the bumper 4 to the recess 4a. Furthermore, there is an effect of reducing the ultrasonic component propagating in the thickness direction of the bumper, and unnecessary ultrasonic radiation can be eliminated.
- FIG. FIG. 5 shows a state in which the ultrasonic sensor according to the third embodiment is attached to the back surface of the bumper 4, and a protrusion having a height substantially equal to the thickness of the matching member 3 around the ultrasonic transmission / reception surface of the metal case 1. 8 is provided.
- the protrusions 8 are provided at equal intervals around the ultrasonic transmission / reception surface of the metal case 1. Or as shown in FIG.6 (b), it provides in a ring shape in the height substantially the same as the thickness of this alignment member so that the circumference
- the alignment member 3 is formed in an elliptical shape as shown in FIG.
- the alignment member 3 is formed in a square shape as shown in FIG. Is formed at substantially the same height as the thickness of the alignment member.
- the third embodiment since the distance between the back surface of the bumper 4 and the ultrasonic transmission / reception surface 1a of the metal case 1, that is, the thickness of the alignment member 3 can be kept constant, the pressure state of the alignment member 3 can be managed. The transmission / reception efficiency of ultrasonic waves is stabilized and the reliability is improved.
- FIG. FIG. 7 shows a state in which the ultrasonic sensor according to the fourth embodiment is attached to the back surface of the bumper 4.
- the recess 4 b having a smaller diameter than the recess 4 a is formed on the bottom surface of the recess 4 a formed on the back surface of the bumper 4.
- the projection 4c around the recess 4b, that is, the bottom of the recess 4a is configured to receive the periphery of the ultrasonic transmission / reception surface 1a of the metal case 1.
- the planar shape of the alignment member 3 may be any of a circular shape, an elliptical shape, a quadrangular shape, and other shapes as shown in FIGS. 6 (a) to 6 (d).
- the ultrasonic transmission / reception surface of the metal case 1 is received by the protrusion 4c around the recess, and does not press the alignment member 3 more than necessary at the time of assembly.
- the pressure state can be managed, the transmission / reception efficiency of ultrasonic waves is stabilized, and the reliability is improved.
- FIG. FIG. 8 shows a state in which the ultrasonic sensor according to the fifth embodiment is attached to the back surface of the bumper 4, and the alignment member 3 is fitted into the recess 4 a formed on the back surface of the bumper 4 to 1 a is brought into contact with the back surface of the bumper 4.
- the fixing ring 6 has a hole 6b that allows the metal case 1 to pass therethrough, and the flange portion 6a around the hole 6b forms a gap 10 between the flange portion 1a of the metal case 1 and the periphery of the flange portion 6a. Is bent into a U-shaped cross section to give elasticity, and the flange portion 1a is pressed against the back surface of the bumper 4 by the U-shaped bent tip.
- the flange 1a of the metal case 1 is pressed against the back surface of the bumper 4 by the elasticity of the fixing ring 6, the distance between the back surface of the bumper 4 and the ultrasonic transmission / reception surface of the metal case 1 That is, the thickness of the alignment member 3 can be kept constant, the pressure state of the alignment member 3 can be managed, the transmission / reception efficiency of ultrasonic waves is stabilized, and the reliability is improved.
- the matching member 3 is composed of the matching members 3a and 3b having two kinds of acoustic impedance, and the pressure sensitive rubber is applied to the matching member 3b in the peripheral portion.
- the peripheral alignment member 3b can be pressurized by the flange 6a of the fixing ring 6 and attached to the back surface of the bumper 4, and the pressure can be made appropriate.
- FIG. 9 shows an example of a circuit for monitoring the pressurization state.
- the peripheral matching member 3b which is a pressure rubber, is applied in a state where a constant voltage E is applied. Since the output voltage V changes with respect to the pressure P, the applied pressure P is determined so that the output voltage V is within an appropriate pressurizing area. If an alarm is issued using the output voltage V when the pressure is outside the proper pressure area, the peripheral alignment member 3b can always be attached to the back surface of the bumper 4 with a proper pressure.
- the flange portion 6a of the fixing ring 6 is divided into at least two parts, the joining parts of the divided pieces can be connected to each other, and the base part of each divided piece can be bent.
- the ultrasonic sensor can be easily replaced.
- an ultrasonic sensor and an ultrasonic sensor module with stable transmission and reception efficiency can be obtained, and these can be attached to the back surface of the bumper 4 with good appearance.
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Abstract
Description
Z1>Z2<Z3
Z2>Zair
ここで
Z1・・・超音波センサの送信面(金属ケース)の音響インピーダンス
Z2・・・整合部材の音響インピーダンス
Z3・・・バンパーの音響インピーダンス
Zair・・・空中の音響インピーダンス
Z1>Z2<Z3
Z2>Zair
ここで
Z1・・・超音波センサの送信面(金属ケース)の音響インピーダンス
Z2・・・整合部材の音響インピーダンス
Z3・・・バンパーの音響インピーダンス
Zair・・・空中の音響インピーダンス
実施の形態1.
図1はこの発明に係る超音波センサを示す原理図であり、カップ型の金属ケース1の底面中央にPZT(チタン酸ジルコン酸鉛)2を設け、金属ケース1とバンパー4の相対面に密着し、それぞれの音響インピーダンスより小さな整合部材3を設けた構成である。
Z1>Z2<Z3
Z2>Zair
ここで
Z1・・・超音波センサの送信面(金属ケース)の音響インピーダンス
Z2・・・整合部材の音響インピーダンス
Z3・・・バンパーの音響インピーダンス
Zair・・・空中の音響インピーダンス
Z21≫Z22
ここで
Z21・・・中央部の第1の整合部材の音響インピーダンス
Z22・・・周辺部の第2の整合部材の音響インピーダンス
周辺部の第2の整合部材3bには、略等間隔に丸形状あるいは多角形状の固形物5、例えばガラス、金属を混入している。
Z1>Z2<Z3
Z2>Zair
の関係とすることにより、超音波の送受信効率を向上させることができる。
Z21≫Z22
の関係とすることにより、超音波の送受信効率を上げ、超音波の指向性を変えることができる。
なお、超音波センサの設置環境によっては、超音波センサの送信面(金属ケース)の音響インピーダンスZ1、整合部材の音響インピーダンスZ2、バンパー4の音響インピーダンスZ3、空中の音響インピーダンスZairの関係が、
Z1>Z2>Z3
あるいは、
Z1<Z2<Z3
でも良い。
図4はこの発明の実施の形態2による超音波センサをバンパー4の裏面に取り付けた状態を示すもので、周辺部の第2の整合部材3bをカップ型に形成して、金属ケース1の超音波送信/受信面に覆いかぶさる構造(キャップ構造)としたものである。
この実施の形態2によれば、金属ケース1の超音波送信/受信面を第2の整合部材3bで覆うので、バンパー4の裏面の凹部4aへの取り付けが容易となる。
さらに、バンパーの厚み方向に伝播する超音波成分を低減する効果があり、不用な超音波の放射を無くすことができる。
図5は実施の形態3による超音波センサをバンパー4の裏面に取り付けた状態を示すもので、金属ケース1の超音波送信/受信面の周囲に整合部材3の厚みと略等しい高さの突起8を設けた構成である。この突起8は図6(a)に示すように、金属ケース1の超音波送信/受信面の周囲に等間隔に設ける。あるいは図6(b)に示すように、整合部材3の周囲を囲むように該整合部材の厚みと略同じ高さにリング状に設ける。また、図6(c)に示すように、整合部材3を楕円形に形成した場合あるいは図6(d)に示すように、整合部材3を四角形に形成した場合は、その整合部材3の周囲を囲むように該整合部材の厚みと略同じ高さに形成する。
この実施の形態3によれば、バンパー4の裏面と金属ケース1の超音波送信/受信面1a間距離すなわち整合部材3の厚みを一定に保持できるので、整合部材3の加圧状態が管理でき、超音波の送受信効率が安定して信頼性が向上する。
図7は実施の形態4による超音波センサをバンパー4の裏面に取り付けた状態を示すもので、バンパー4の裏面に形成した凹部4aの底面に該凹部4aより小径の凹部4bを整合部材の厚みと略同じ深さに設け、その凹部4b周囲の突起部4c、つまり凹部4aの底面で金属ケース1の超音波送信/受信面1aの周囲を受けるように構成したものである。この場合、整合部材3の平面形状は、図6(a)~(d)に示したと同様に円形、楕円形、四角形、その他の形状等いずれでもよい。
この実施の形態4によれば、金属ケース1の超音波送信/受信面は、凹部周囲の突起部4cで受けられ、組み付け時に整合部材3を必要以上に加圧することがないので、整合部材3の加圧状態が管理でき、超音波の送受信効率が安定して信頼性が向上する。
図8は実施の形態5による超音波センサをバンパー4の裏面に取り付けた状態を示すもので、バンパー4の裏面に形成された凹部4aに整合部材3を勘合させて、金属ケース1の鍔部1aをバンパー4の裏面に当接させる。固定リング6は、金属ケース1を貫通させる穴6bを有し、この穴6b周辺の鍔部6aは金属ケース1の鍔部1aとの間に隙間10を形成するとともに、その鍔部6aの周辺を断面U字型に折り曲げて弾性を持たせ、このU字型の折り曲げ先端部で鍔部1aをバンパー4の裏面に押圧させる構成である。
この実施の形態5によれば、固定リング6側の弾性で金属ケース1の鍔部1aをバンパー4の裏面に押圧させるので、バンパー4の裏面と金属ケース1の超音波送信/受信面間距離すなわち整合部材3の厚みを一定に保持でき、整合部材3の加圧状態が管理でき、超音波の送受信効率が安定して信頼性が向上する。
Claims (12)
- バンパーの裏面に取り付ける超音波センサにおいて、この超音波センサの超音波送信面および前記バンパーの相対面に密着し、それぞれの音響インピーダンスより小さな整合部材を設けたことを特徴とする超音波センサ。
- 超音波センサの超音波送信面、整合部材、バンパーおよび空中の音響インピーダンスは以下の関係にあることを特徴とする請求項1記載の超音波センサ。
Z1>Z2<Z3
Z2>Zair
ここで
Z1・・・超音波センサの送信面(金属ケース)の音響インピーダンス
Z2・・・整合部材の音響インピーダンス
Z3・・・バンパーの音響インピーダンス
Zair・・・空中の音響インピーダンス
- 整合部材は第1の音響インピーダンスを有する部材と第2の音響インピーダンスを有する部材で構成し、少なくとも一方の部材とバンパーとの接触面の形状にはアスペクト比を有し、それぞれの部材の音響インピーダンスは下式の関係であることを特徴とする請求項1記載の超音波センサ。
Z21≫Z22
ここで
Z21・・・中央部の第1の部材の音響インピーダンス
Z22・・・周辺部の第2の部材の音響インピーダンス
- 第1の部材は脱泡シリコーン、第2の部材は発泡スチロールあるいは発泡シリコーンであることを特徴とする請求項3記載の超音波センサ。
- 整合部材は第1の音響インピーダンスを有する部材と第2の音響インピーダンスを有する部材で構成し、第2の部材は超音波送信面に覆いかぶさるカップ構造であることを特徴とする請求項3記載の超音波センサ。
- 周辺の整合部材あるいは周辺の整合部材に丸形状あるいは多角形形状の固形物を混入したことを特徴とする請求項3記載の超音波センサ。
- 中央の整合部材に感圧ゴムを用いて超音波センサとバンパーとの加圧状態を監視し、一定の閾値以上あるいは以下になったとき警報を発する機能を有することを特徴とする請求項3記載の超音波センサ。
- 超音波センサの構成要素である金属ケースの超音波送信面と前記バンパーの当接面のいずれか一方の面に突起部を設け、この突起部によって前記当接面に介在させた整合部材の厚みを一定に保持することを特徴とする請求項3記載の超音波センサ。
- 突起部の形状で整合部材のアスペクト比を変えることを特徴とする請求項8記載の超音波センサ。
- 請求項1~請求項9のうちのいずれか1項の超音波センサをバンパー裏面の所定位置に配置し、前記超音波センサの構成要素である金属ケースの鍔部を固定部材で押圧し、この押圧した状態で前記固定部材を前記バンパーに固定することを特徴とする超音波センサの取付け方法。
- 固定部材が金属ケースの鍔部を常時押圧する付勢部材を備えたことを特徴とする請求項10記載の超音波センサの取付け方法。
- 付勢部材は固定部材に形成したことを特徴とする請求項10記載の超音波センサの取付け方法。
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US13/395,903 US8794071B2 (en) | 2010-01-21 | 2010-01-21 | Ultrasonic wave sensor and method for attaching ultrasonic wave sensor |
PCT/JP2010/000319 WO2011089644A1 (ja) | 2010-01-21 | 2010-01-21 | 超音波センサおよび超音波センサの取り付け方法 |
CN201080053985.4A CN102652269B (zh) | 2010-01-21 | 2010-01-21 | 超声波传感器及超声波传感器的安装方法 |
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WO2019131375A1 (ja) * | 2017-12-25 | 2019-07-04 | 株式会社ニフコ | センサーアセンブリ及びその取付方法 |
JP2019176291A (ja) * | 2018-03-28 | 2019-10-10 | パナソニックIpマネジメント株式会社 | 超音波送受波器 |
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JP5460738B2 (ja) | 2014-04-02 |
CN102652269B (zh) | 2015-09-30 |
CN102652269A (zh) | 2012-08-29 |
DE112010005166T5 (de) | 2012-10-31 |
DE112010005166B4 (de) | 2017-02-09 |
JPWO2011089644A1 (ja) | 2013-05-20 |
US20120180569A1 (en) | 2012-07-19 |
US8794071B2 (en) | 2014-08-05 |
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