WO2017149931A1 - Ultrasonic sensor and ultrasonic sensor device provided with same - Google Patents

Ultrasonic sensor and ultrasonic sensor device provided with same Download PDF

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Publication number
WO2017149931A1
WO2017149931A1 PCT/JP2017/000382 JP2017000382W WO2017149931A1 WO 2017149931 A1 WO2017149931 A1 WO 2017149931A1 JP 2017000382 W JP2017000382 W JP 2017000382W WO 2017149931 A1 WO2017149931 A1 WO 2017149931A1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic sensor
claw
bumper
arm
claw portion
Prior art date
Application number
PCT/JP2017/000382
Other languages
French (fr)
Japanese (ja)
Inventor
拓司 渡部
一將 山内
Original Assignee
パナソニックＩｐマネジメント株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2017149931A1 publication Critical patent/WO2017149931A1/en

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • 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
    • 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

Definitions

  • the present invention relates to an ultrasonic sensor and an ultrasonic sensor device including the ultrasonic sensor, and more particularly to an ultrasonic sensor attached to a bumper and an ultrasonic sensor device including the ultrasonic sensor.
  • an ultrasonic sensor including a bezel member (first mounting member) and an ultrasonic sensor main body is known (see, for example, Patent Document 1).
  • the bezel member is inserted from the front side of the bumper into a mounting hole drilled so as to penetrate the front and back of the bumper of the vehicle, and sandwiches the bumper from the front and back.
  • the ultrasonic sensor main body houses an ultrasonic microphone.
  • the ultrasonic sensor main body is provided with an assembly claw.
  • the bezel member is provided with an elastically deformable arm portion. An assembly hole is formed in the arm portion.
  • the ultrasonic sensor main body is coupled and mounted to the bezel member from the back side of the bumper by engaging the assembly pawl and the assembly hole.
  • the ultrasonic sensor of the present disclosure includes a housing, a first claw portion, a second claw portion, and a transducer.
  • the housing has a cylindrical portion.
  • claw part protrudes from the side surface of a cylinder part.
  • claw part protrudes from the side surface of a cylinder part.
  • the transducer is accommodated in the cylindrical portion and transmits / receives (transmits / receives) an ultrasonic wave.
  • the first claw portion can be hooked on the first arm portion protruding from the surface through the hole to the back surface in the first mounting member attached to the surface of the first bumper provided with the hole.
  • the second claw portion can be hooked on the second arm portion protruding from the back surface in the thickness direction of the second bumper in the second mounting member mounted on the back surface of the second bumper.
  • the first claw portion and the second claw portion are separated from each other.
  • the second claw portion is preferably provided so that a gap is formed between the second claw portion and the first arm portion in a state where the first claw portion is caught by the first arm portion.
  • the first claw portion and the second claw portion are separated from each other.
  • the first claw portion is preferably provided so that a gap is formed between the first claw portion and the second arm portion in a state where the second claw portion is caught by the second arm portion.
  • the cylindrical portion has an opening exposing the ultrasonic wave transmitting / receiving surface of the transducer, and the first claw portion is provided at a position closer to the opening than the second claw portion.
  • the cylindrical portion includes a first cylindrical body and a second cylindrical body in which the control unit is accommodated, and the outer diameter of the second cylindrical body is larger than the outer diameter of the first cylindrical body. Preferably it is.
  • the ultrasonic sensor device of the present disclosure includes the above-described ultrasonic sensor and the first mounting member or the second mounting member.
  • the first attachment member has a first arm portion that is attached to the surface of the first bumper having a hole and protrudes to the back surface through the hole.
  • the second attachment member has a second arm portion attached to the back surface of the second bumper and protruding from the back surface.
  • the first claw portion can be hooked on the first arm portion protruding from the surface through the hole to the back surface in the first mounting member attached to the surface of the first bumper.
  • claw part can be hooked on the 2nd arm part of the 2nd attachment member attached to the back surface of the 2nd bumper. Therefore, since the ultrasonic sensor of the present disclosure includes the first claw portion and the second claw portion, both the first attachment member that penetrates the first bumper and the second attachment member that does not penetrate the second bumper. It can be attached to.
  • the above-described ultrasonic sensor can be hooked on the first arm portion of the first attachment member attached to the surface of the first bumper, and attached to the back surface of the second bumper. It is possible to hook onto the second arm portion of the second mounting member.
  • FIG. 1 is a perspective view of the ultrasonic sensor according to the embodiment.
  • 2A is a left side view of the ultrasonic sensor of FIG.
  • FIG. 2B is a front view of the ultrasonic sensor of FIG.
  • FIG. 3 is an exploded perspective view of the ultrasonic sensor of FIG.
  • FIG. 4 is an exploded perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member.
  • FIG. 5 is a perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member.
  • FIG. 6 is a cross-sectional view of the ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member on the XZ plane.
  • FIG. 1 is a perspective view of the ultrasonic sensor according to the embodiment.
  • 2A is a left side view of the ultrasonic sensor of FIG.
  • FIG. 2B is a front view of the ultrasonic sensor of FIG.
  • FIG. 7 is an exploded perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member.
  • FIG. 8 is a perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member.
  • FIG. 9 is a cross-sectional view of the XZ plane of the ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member.
  • This indication is made in view of the above-mentioned problem, and provides an ultrasonic sensor which can be attached to both the 1st attachment member which penetrates a bumper, and the 2nd attachment member which does not penetrate a bumper, and an ultrasonic sensor device provided with the same Objective.
  • the ultrasonic sensor 1 of the present embodiment will be described with reference to FIGS.
  • the ultrasonic sensor 1 is attached to a vehicle bumper, for example.
  • the ultrasonic sensor 1 transmits ultrasonic waves and receives reflected ultrasonic waves.
  • the ultrasonic sensor 1 is configured so as to be able to determine, for example, the presence or absence (presence / absence) of an object near the bumper and to obtain the distance to the object near the bumper.
  • the ultrasonic sensor 1 includes a housing 2, a first claw part 10, a second claw part 20, and a transducer 3.
  • the housing 2 has a cylindrical portion 200.
  • the first claw portion 10 protrudes from the side surface of the tube portion 200.
  • the second claw portion 20 protrudes from the side surface of the cylindrical portion 200.
  • the transducer 3 is accommodated in the cylindrical portion 200 and transmits and receives ultrasonic waves.
  • the first claw portion 10 has a hole from the first surface 111 (front surface) in the bezel 8 (first mounting member) attached to the first surface 111 (front surface) of the first bumper 110 having the hole 113 shown in FIG.
  • the second claw portion 20 extends from the second surface 122 (back surface) to the second bumper.
  • the second arm portion 94 protruding in the thickness direction of 120 can be hooked.
  • the directions of arrows indicating x, y, and z shown at the lower right in each of FIGS. 1 to 9 are defined as an x direction, a y direction, and a z direction, respectively.
  • the x direction is a direction parallel to the axis of the cylindrical portion 200 and the transducer 3 transmitting ultrasonic waves.
  • the y direction and the z direction are directions orthogonal to each other on a plane orthogonal to the x axis.
  • the transducer 3 has a transmission / reception surface for transmitting and receiving ultrasonic waves. As shown in FIG. 1, the transducer 3 transmits and receives ultrasonic waves on the vibration surface 31. That is, the vibration surface 31 is an ultrasonic wave transmission / reception surface.
  • the vibration surface 31 is, for example, a bottom surface on the outside of a bottomed cylindrical case.
  • the case of the transducer 3 opens in the direction opposite to the x direction.
  • An ultrasonic transducer piezoelectric element
  • the ultrasonic transducer is electrically connected to the control unit 7 (see FIG. 3). The ultrasonic vibrator is vibrated by an electric signal from the control unit 7.
  • the transducer 3 vibrates the vibration surface 31 and transmits ultrasonic waves. Further, the vibration surface 31 vibrates when receiving an ultrasonic reflected wave.
  • the ultrasonic transducer outputs an electrical signal to the control unit 7 in accordance with the vibration.
  • the control unit 7 includes, for example, a substrate on which a microcomputer is mounted.
  • the microcomputer can determine the presence / absence (presence / absence) of an object and the distance to the object based on the electrical signal from the ultrasonic transducer.
  • the housing 2 is formed of a resin material.
  • the cylindrical portion 200 of the housing 2 includes a first cylindrical body 21 and a second cylindrical body 22, as shown in FIGS.
  • the cylinder part 200 is formed in a bottomed cylinder shape whose axis faces the x direction.
  • An opening 231 is provided at one end of the cylindrical portion 200.
  • the cylinder part 200 accommodates the control part 7 and the transducer 3 in the internal space.
  • a connector 23 is provided on the side surface of the cylindrical portion 200.
  • the first cylinder 21 is formed in a cylindrical shape.
  • the axis of the first cylinder 21 is along the x direction.
  • An opening 231 (see FIG. 3) is formed at the end of the first cylinder 21 in the x direction.
  • the inner diameter of the opening 231 of the first cylinder 21 is larger than the outer diameter of the transducer 3.
  • a part of the transducer 3 is accommodated in the internal space of the first cylinder 21.
  • the first cylinder 21 is formed to be coaxial with the transducer 3 housed in the opening 231.
  • the end of the first cylinder 21 opposite to the x direction is connected to the second cylinder 22, and the internal space of the first cylinder 21 is connected to the internal space of the second cylinder 22.
  • the second cylinder 22 is formed in a cylindrical shape.
  • the axis of the second cylinder 22 is on the axis of the first cylinder 21 and is formed in a rectangular cylinder shape that is flat in the y direction when viewed from the x direction.
  • a flat surface 222 that intersects the z direction is formed on the peripheral surface of the second cylindrical body 22.
  • the second cylinder 22 has a dimension in the y direction that is longer than a dimension in the z direction.
  • the corner portion of the side surface 221 in the second cylinder 22 is rounded.
  • the dimension of the second cylinder 22 in the y direction is larger than the outer diameter of the first cylinder 21. Since the thickness of the second cylinder 22 is the same as the thickness of the first cylinder 21, the internal space of the second cylinder 22 is wider in the y direction than the internal space of the first cylinder 21. ing. The internal space of the second cylinder 22 is connected to the internal space of the first cylinder 21.
  • the control unit 7 is accommodated in the internal space of the second cylinder 22. Since the dimension in the y direction in the internal space of the second cylinder 22 is larger than the outer diameter of the first cylinder 21, for example, when the size of the substrate of the control unit 7 is larger than the outer diameter of the first cylinder 21. Even if it exists, the control part 7 can be accommodated in the 2nd cylinder 22.
  • FIG. The opening on the opposite side to the x direction of the second cylinder 22 is closed by the bottom plate 64 in a state where the control unit 7 is housed in the second cylinder 22.
  • the transducer 3 is accommodated in the cylindrical portion 200 so as to be coaxial with the first cylindrical body 21 with a part of the vibration surface 31 and the side surface 32 protruding from the opening 231.
  • a side surface 32 of the transducer 3 protruding from the first cylinder 21 is covered with the elastic member 5.
  • a pedestal 63, a fixing member 62, and a cover 61 are disposed between the transducer 3 and the first cylinder 21.
  • the pedestal 63, the fixing member 62, and the cover 61 are made of an elastic material such as rubber, for example.
  • the pedestal 63, the fixing member 62, and the cover 61 are formed in a ring shape.
  • the pedestal 63 is disposed on the surface of the flange portion 234 that protrudes from the inner surface 232 of the first cylindrical body 21 toward the axis.
  • the transducer 3 is housed in the cylindrical portion 200 in a state in which the pedestal 63, the transducer 3, the fixing member 62, the cover 61, and the elastic member 5 are arranged in this order along the x direction.
  • the inner diameters of the fixing member 62 and the cover 61 are substantially the same as the outer diameter of the transducer 3.
  • the fixing member 62 and the cover 61 are disposed between the side surface 32 of the transducer 3 and the inner side surface 232 of the first cylindrical body 21 with the transducer 3 being passed through the respective holes.
  • the cover 61 closes the gap between the transducer 3 and the inner surface 232 of the first cylinder 21.
  • the fixing member 62 is in contact with the transducer 3 and is sandwiched between the cover 61 and the pedestal 63 to restrict the movement of the transducer 3.
  • the pedestal 63 suppresses vibration from being transmitted from the first cylinder 21 to the transducer 3.
  • the pedestal 63 also prevents vibration from being transmitted from the transducer 3 to the first cylinder 21.
  • the pedestal 63, the fixing member 62, and the cover 61 make it difficult for a gap to be formed between the inner surface 232 of the first cylinder 21 and the transducer 3.
  • the elastic member 5 is made of a soft resin material such as rubber.
  • the elastic member 5 is formed in a cylindrical shape with both ends opened.
  • the inner diameter of the elastic member 5 is substantially equal to the outer diameter of the transducer 3.
  • a flange 51 protruding in the radial direction is formed at the end of the elastic member 5 in the direction opposite to the x direction.
  • the outer diameter of the flange 51 is substantially the same as the outer diameter of the side surface 210 of the first cylinder 21.
  • a portion of the transducer 3 protruding in the x direction from the opening 231 of the first cylinder 21 is passed through the hole of the elastic member 5. That is, the portion of the transducer 3 exposed from the cylindrical portion 200 is surrounded by the elastic member 5.
  • the elastic member 5 suppresses the vibration from the bezel 8 and the holding member 9 from being transmitted to the transducer 3.
  • the elastic member 5 also suppresses vibration from being transmitted from the transducer 3 to the bezel 8 and the holding member 9.
  • a controller 7 is disposed in the opening of the housing 2 in the direction opposite to the x direction.
  • the control unit 7 controls the transducer 3 to cause the transducer 3 to transmit / receive ultrasonic waves.
  • substrate of the control part 7 is fixed in the 2nd cylinder 22 by screwing etc., for example.
  • the opening in the direction opposite to the x direction in the housing 2 is closed by the bottom plate 64.
  • the housing 2 is filled with a resin material. This makes it difficult for foreign matter such as water and dust to enter the housing 2.
  • the bottom plate 64 and the housing 2 can be bonded with an adhesive or the like to ensure the hermeticity of the internal space of the housing 2, the filling of the resin material can be omitted.
  • the sealing property of the internal space of the housing 2 can be secured by the resin material filled in the internal space of the housing 2, the bottom plate 64 can be omitted.
  • the transducer 3 vibrates the ultrasonic vibrator and transmits ultrasonic waves from the vibration surface 31.
  • the transducer 3 receives the reflected ultrasonic wave at the vibration surface 31.
  • a voltage is generated in the ultrasonic vibrator due to the vibration of the vibration surface 31 generated when the reflected ultrasonic wave is received.
  • a voltage signal from the ultrasonic transducer is input to the control unit 7 to the microcomputer of the control unit 7.
  • the microcomputer based on the time difference from when the ultrasonic wave is transmitted from the vibration surface 31 to when the reflected wave is received by the vibration surface 31, is the distance from the vibration surface 31 to the object that has reflected the ultrasonic wave. Is obtained by calculation or the like.
  • the first cylinder 21 is provided with four first claw portions 10. More specifically, two first claw portions 10 are provided on the side surface 210 on the z direction side of the first cylindrical body 21. The remaining two first claw portions 10 are provided on the side surface 210 of the first cylindrical body 21 on the opposite side to the z direction. In the following description, the two first claw portions 10 provided on the side surface 210 in the z direction of the first cylindrical body 21 will be described.
  • the two first claw portions 10 are provided so as to protrude from the side surface 210 of the first cylindrical body 21 in the z direction.
  • the two first claw portions 10 are arranged in the y direction.
  • Each of the two first claw portions 10 is formed with a tapered surface 102.
  • the tapered surface 102 is formed so that the protruding dimension of the end portion on the x direction side of the first claw portion 10 is smaller than the protruding dimension of the first claw portion 10 in the reverse direction of the x direction.
  • a locking surface 101 is formed at a portion of the first claw portion 10 in the direction opposite to the x direction.
  • the locking surface 101 is a surface that intersects the x-axis.
  • An overhang portion 105 is formed between the first claw portion 10 and the second cylinder 22 on the side surface 210 of the first cylinder 21.
  • the overhang part 105 projects from the side surface 210 of the first cylinder 21 in the radial direction of the first cylinder 21.
  • the dimension of the overhang part 105 in the y direction is substantially equal to the dimension of the first claw part 10 in the y direction.
  • a flat surface 103 that intersects the z direction is formed in the overhang portion 105.
  • the plane 103 is flush with the plane 222 of the second cylinder 22.
  • the first tubular body 21 is provided with four overhanging portions 212. More specifically, two projecting portions 212 are provided on the side surface 210 on the z-direction side of the first cylindrical body 21. The remaining two overhang portions 212 are provided on the side surface 210 of the first cylinder 21 on the opposite side to the z direction. In the following description, the two overhang portions 212 provided on the side surface 210 in the z direction of the first cylindrical body 21 will be described. The two overhang portions 212 are provided on both sides of the two first claw portions 10. In other words, two first claw portions 10 are provided between the two overhang portions 212. The overhanging portion 212 protrudes from the side surface 210 of the first cylinder 21 in the y direction and the z direction, respectively.
  • a plane 213 that is parallel to a plane that intersects the z-axis is formed in the overhanging portion 212.
  • the flat surface 213 is formed at a portion adjacent to the first claw portion 10 in the overhang portion 212.
  • the overhanging portion 212 is formed with a plane 214 that is parallel to a plane that intersects the x-axis.
  • a flat surface 104 is formed at the tip of the first claw portion 10 protruding in the z direction.
  • the plane 104 is a plane that intersects the z-axis (a plane including the x-axis and the y-axis).
  • the two first claw portions 10 and the two overhang portions 212 are symmetric with respect to the axis of the first cylinder body 21, so that the z-direction side in the first cylinder body 21 is Side surface 210 and side surface 210 opposite to the z direction.
  • the “z direction” is changed to the “opposite direction to the z direction”. The description is omitted because it may be replaced.
  • Two side claws 20, four guides 4, and two planes 222 are provided on the side surface of the second cylinder 22.
  • the two flat surfaces 222 are respectively provided on the side surface on the z direction side of the second cylindrical body 22 and the side surface on the opposite side to the z direction of the second cylindrical body 22.
  • On the plane 222 one second claw portion 20 and two guide portions 4 are provided.
  • one second claw portion 20 and two guide portions 4 provided on the plane 222 on the z direction side in the second cylindrical body 22 will be described.
  • the second claw portion 20 protrudes from the plane 222 in the z direction.
  • claw part 20 is provided so that it may protrude in the z direction from the plane 222.
  • a tapered surface 202 is formed on the second claw portion 20.
  • the tapered surface 202 is formed such that the protruding dimension of the second claw portion 20 from the side surface 221 of the second cylinder 22 decreases in the x direction.
  • a locking surface 201 is formed at a portion of the second claw portion 20 in the direction opposite to the x direction.
  • the locking surface 201 is a surface that intersects the x-axis.
  • a groove 205 common to the tapered surface 202 and the flat surface 203 is provided in the second claw portion 20 along the x direction. The groove 205 is provided to prevent the resin material from contracting when the second claw portion 20 is molded and causing sink marks in the second claw portion 20.
  • a flat surface 203 is formed at the tip of the second claw portion 20 on the x direction side.
  • the dimension from the flat surface 203 of the second claw part 20 to the surface of the collar part 51 on the y direction side is referred to as “dimension L1”.
  • the dimension L1 (refer FIG. 6) is mentioned in detail later, it is set to the magnitude
  • Two guide portions 4 are formed on the flat surface 222 of the second cylindrical body 22.
  • the two guide portions 4 are respectively provided on both sides of the second claw portion 20.
  • the guide part 4 includes a protruding part 401 and an overhang part 402.
  • the protruding portion 401 is provided so as to protrude in the z direction from the plane 222 of the second cylindrical body 22.
  • the overhanging portion 402 protrudes in the y direction from the side surface of the protruding portion 401 opposite to the second claw portion 20.
  • a concave portion 403 is formed by the side surface 221 of the second cylindrical body 22, the protruding portion 401, and the overhang portion 402.
  • a tapered surface 404 is formed at a portion adjacent to the second cylindrical body 22 in the protruding portion 401.
  • the tapered surface 404 is formed so that the protruding dimension of the protruding portion 401 becomes smaller as it approaches the second cylindrical body 22.
  • a flat surface 204 is formed at the tip of the portion protruding in the z direction in the second claw portion 20.
  • the plane 204 is a plane that intersects the z-axis (a plane that includes the x-axis and the y-axis).
  • claw part 20 and the two guide parts 4 are provided also in the plane 222 on the opposite side to the z direction in the 2nd cylinder 22, as shown to FIG. 2A and 2B.
  • the “z direction” can be read as “a direction opposite to the z direction”. Since it is good, explanation is omitted.
  • the connector 23 includes a peripheral wall 230 formed in a cylindrical shape and pins arranged inside the peripheral wall.
  • the peripheral wall 230 is along the y direction.
  • the connector 23 is formed in a cylindrical shape that is flat in the z direction when viewed from the y direction.
  • the connector 23 is connected to the side surface 210 of the first cylinder body 21 and the side surface 221 of the second cylinder body 22.
  • the internal space of the connector 23 is connected to the internal space of the first cylinder 21 and the internal space of the second cylinder 22.
  • connection pins that are electrically connected to the control unit 7 are arranged.
  • a cable terminal connected to the connection pin is inserted.
  • a control signal for controlling the control unit 7 is supplied to the cable at the cable terminal.
  • the bezel 8 is attached to the first bumper 110 (see FIG. 6) of the vehicle, for example.
  • the first bumper 110 is provided with a hole 113 that penetrates the first bumper 110 in the x direction.
  • the bezel 8 has two first arm portions 82.
  • the two first arm portions 82 project from the first surface 111 side of the first bumper 110 through the hole 113 provided in the first bumper 110 and protrude toward the second surface 112 side of the first bumper 110.
  • the ultrasonic sensor 1 is attached to the bezel 8 by being sandwiched between the two first arm portions 82.
  • the bezel 8 will be described.
  • the bezel 8 further includes a cylindrical body 81, a flange portion 80, and four support portions 85.
  • the bezel 8 is made of a resin material.
  • the axis of the cylinder 81 is along the x direction.
  • the flange 80 protrudes in the radial direction from the end of the cylindrical body 81 in the x direction.
  • An end 812 of the cylindrical body 81 in the direction opposite to the x direction is formed so as to be parallel to a plane intersecting the x axis.
  • the elastic member 5 and a part of the transducer 3 are arranged.
  • the first surface 801 of the flange 80 is exposed to the first surface 111 (front surface) (see FIG. 6) of the first bumper 110 in a state where the bezel 8 is attached to the first bumper 110.
  • the second surface 802 in the opposite direction to the x direction in the flange 80 is parallel to the surface intersecting the x axis.
  • the second surface 802 of the flange 80 is in contact with the first surface 111 of the first bumper 110.
  • the two first arm portions 82 protrude from the first surface 111 side of the first bumper 110 through the hole 113 of the first bumper 110 to the second surface 112 side (back surface) (see FIG. 6).
  • the first arm portion 82 includes two support portions 820, one locking portion 84, two spring portions 840, and two gaps 83.
  • the two support portions 820 protrude from the second surface 802 of the flange portion 80 in the direction opposite to the x direction.
  • the two support portions 820 are arranged in the y direction.
  • the support portion 820 is formed with a plane 821 that is parallel to a plane that intersects the z-axis.
  • the plane 821 is provided at each end in the y direction of the support portion 820.
  • the dimension from the front end of the support part 820 to the surface of the end part 812 of the cylinder 81 is referred to as “dimension L2”.
  • the dimension L2 corresponds to the length of the first arm portion 82.
  • the dimension L2 is smaller than the dimension L1 from the plane 203 of the 2nd nail
  • FIG. In other words, the support portion 820 is formed such that the dimension L2 is smaller than the dimension L1.
  • a locking part 84 and two gaps 83 are provided between the two support parts 820.
  • the locking portion 84 and the gap 83 are provided so that the first claw portion 10 is caught by the support portion 820.
  • the locking portion 84 is disposed at the end of the two planes 821 in the direction opposite to the z direction.
  • the locking portion 84 is formed integrally with the two support portions 820.
  • the locking portion 84 has a locking surface 843 that intersects the x-axis and a plane 842 that intersects the plane that intersects the z-axis.
  • Two spring portions 840 are provided on the locking surface 843.
  • the two spring portions 840 protrude from the locking surface 843 of the locking portion 84 in the x direction.
  • a pressing portion 841 projecting in the z direction is provided at the tip of each of the two spring portions 840.
  • the dimension from the two pressing portions 841 to the second surface 802 of the flange portion 80 is smaller than the thickness of the first bumper 110.
  • the two pressing portions 841 and the flange portion 80 sandwich the first bumper 110.
  • the two pressing portions 841 are arranged such that when the first bumper 110 is sandwiched between the flange portions 80, a portion that is in contact with the edge of the hole 113 of the first bumper 110 is pressed against the edge of the hole 113 so as to follow the edge of the hole 113.
  • the first bumper 110 is pressed against the second surface 802 of the flange 80. Since the two pressing portions 841 are deformed according to the thickness of the first bumper 110, the two pressing portions 841 can be attached to the first bumper 110 having various thicknesses.
  • the bezel 8 is attached to the first bumper 110 by the two pressing portions 841 and the flange 80 sandwiching the first bumper 110.
  • the first arm portion 82 is difficult to bend in the direction in which the two first arm portions 82 are separated from each other. Further, by arranging the ultrasonic sensor 1 between the two first arm portions 82, the first arm portion 82 is less likely to bend in the direction in which the two first arm portions 82 approach each other.
  • the first arm portion 82 is sandwiched between the ultrasonic sensor 1 and the edge of the hole 113 of the first bumper 110.
  • the bezel 8 is fixed to the first bumper 110 while being sandwiched between the ultrasonic sensor 1 and the edge of the hole 113 of the first bumper 110.
  • the spring portion 840 can apply a restoring force to the support portion 820 to return the support portion 820 to the original position when the support portion 820 is bent in the direction along the z-axis.
  • a gap 83 is provided between the spring portion 840 and the support portion 820.
  • the gap 83 is a space surrounded by the spring portion 840, the support portion 820, the locking surface 843 of the locking portion 84, and the second surface 802 of the flange portion 80.
  • the width of the gap 83 in the y direction is wider than the width of the first claw portion 10 in the ultrasonic sensor 1 in the y direction.
  • the support portion 85 is formed in a plate shape.
  • the support portion 85 protrudes from the second surface 802 of the flange portion 80 in the direction opposite to the x direction.
  • the support portion 85 is provided with a curved surface 851 that is curved along the side surface 210 of the first cylinder 21.
  • the support portion 85 is formed so as to be integrated with the flange portion 80 and the support portion 820.
  • the support portion 85 limits the amount of bending of the support portion 820 when the support portion 820 is applied with a force in the z direction (and the opposite direction) to the flange portion 80.
  • the support portion 820 is inserted into the hole 113 from the first surface 111 of the first bumper 110 in the direction opposite to the x direction. With the pressing portion 841 in contact with the edge of the hole 113, the support portion 820 is further pressed in the direction opposite to the x direction, so that the spring portion 840 is bent in a direction approaching the cylinder 81. When the spring portion 840 is pushed in a direction approaching the axis of the cylindrical body 81 until the second surface 802 of the flange portion 80 contacts the first bumper 110, the pressing portion 841 passes through the hole 113.
  • the pressing portion 841 that has passed through the hole 113 returns to its original position by the bending restoring force of the spring portion 840, and the pressing portion 841 contacts the first bumper 110 and applies a force in the x direction to the first bumper 110.
  • the bezel 8 is attached to the first bumper 110 by the pressing portion 841 and the flange portion 80 sandwiching the first bumper 110.
  • the structure in which the ultrasonic sensor 1 is attached to the bezel 8 will be described.
  • the bezel 8 is attached to the first bumper 110 (see FIG. 6), but the illustration of the first bumper 110 is omitted in FIGS.
  • a method for attaching the ultrasonic sensor 1 to the bezel 8 will be described.
  • the operator places the ultrasonic sensor 1 on the first arm portion 82 side of the bezel 8 so that the transducer 3 of the ultrasonic sensor 1 and the cylindrical body 81 of the bezel 8 are coaxial.
  • the operator brings the ultrasonic sensor 1 close to the bezel 8 until the transducer 3 and the elastic member 5 are arranged in the cylinder 81.
  • the two support portions 820 of the bezel 8 are returned to their original positions by the restoring force of the bending, and are locked.
  • the locking surface 843 of the portion 84 is in contact with the locking surfaces 101 of the four first claw portions 10 of the ultrasonic sensor 1.
  • the end portion 812 of the cylinder 81 presses the flange portion 51 of the elastic member 5 in the direction opposite to the x direction to elastically deform the flange portion 51. Therefore, the housing 2 is in a state where movement in the x direction is restricted by the locking portion 84 of the bezel 8 and the cylinder 81.
  • the four flat surfaces 821 of the bezel 8 are in contact with the flat surfaces 213 of the four overhanging portions 212 in a state where the elastic member 5 and a part of the transducer 3 are disposed in the cylinder 81, respectively.
  • the flat surfaces 842 of the two locking portions 84 are in contact with the two flat surfaces 103, respectively. Therefore, the housing 2 of the ultrasonic sensor 1 is in a state where movement in the z direction is restricted by the four flat surfaces 821 and the two locking portions 84 in the support portion 820 of the bezel 8. Accordingly, the ultrasonic sensor 1 is attached to the bezel 8.
  • each of the four support portions 85 of the bezel 8 includes a part (tip portion) of the elastic member 5 of the ultrasonic sensor 1 and the transducer 3 in the cylindrical body 81. Is placed.
  • the ultrasonic sensor 1 contacts the side surface 210 of the first cylinder 21 of the housing 2. That is, the four support portions 85 of the bezel 8 support the first cylinder 21 of the housing 2 in the ultrasonic sensor 1. Therefore, the housing 2 is in a state where movement in the z direction and movement in the y direction are restricted by the four support portions 85.
  • the dimension L2 from the front end of the support portion 820 to the surface of the end portion 812 of the cylindrical body 81 in the bezel 8 is from the flat surface 203 of the second claw portion 20 in the ultrasonic sensor 1. It is smaller than the dimension L1 to the surface of the part 51 on the x direction side. Therefore, a gap is formed between the second claw portion 20 of the ultrasonic sensor 1 and the support portion 820 of the bezel 8 with the ultrasonic sensor 1 attached to the bezel 8. For this reason, the support part 820 in the bezel 8 is less likely to interfere with the second claw part 20 in the ultrasonic sensor 1.
  • the holding member 9 is attached to the second bumper 120 (see FIG. 9) of the vehicle, for example.
  • the second bumper 120 is provided with a hole 123 that penetrates the second bumper 120 in the x direction.
  • the diameter of the hole 123 is substantially equal to the outer diameter of the side surface 52 of the elastic member 5.
  • the holding member 9 has two second arm portions 94.
  • the two second arm portions 94 are attached to the second surface 122 (back surface) (see FIG. 9) of the second bumper 120 and protrude from the second surface 122 of the second bumper 120 in the thickness direction of the second bumper 120. .
  • the ultrasonic sensor 1 is attached to the holding member 9 by being sandwiched between the two second arm portions 94.
  • the holding member 9 will be described.
  • the holding member 9 has a base 91, four support portions 92, and two second arm portions 94.
  • the holding member 9 is made of a resin material.
  • the base 91 is formed in a flat plate shape whose thickness direction is the x direction, for example.
  • a double-sided tape is attached to the first surface 901 of the base 91 on the x direction side.
  • the base 91 is attached to the second surface 122 of the second bumper 120 with a double-sided tape.
  • the two second arm portions 94 in the holding member 9 are respectively caught by the two second claw portions 20 in the ultrasonic sensor 1.
  • the four support portions 92 are in contact with the side surface 221 of the second cylinder 22 in the ultrasonic sensor 1.
  • the ultrasonic sensor 1 is attached to the holding member 9 by the two second claw portions 20 and the four support portions 92.
  • the vibration surface 31 of the transducer 3 in the ultrasonic sensor 1 is exposed from the first surface 121 (surface) of the second bumper 120 through the hole 123 of the second bumper 120.
  • two second arm portions 94, four support portions 92, four ribs 95, and a circular recess 912 are provided on the second surface 902 of the base 91 opposite to the x direction.
  • the four ribs 95 are in contact with the four overhanging portions 212 of the first cylinder 21 in the ultrasonic sensor 1.
  • the recess 912 is formed so as to be recessed from the second surface 902 side of the base 91.
  • the inner diameter of the recess 912 is larger than the outer diameter of the first cylinder 21 when viewed from the x direction.
  • the concave portion 912 is formed by reducing the thickness of the base 91.
  • the recess 912 is provided with a hole 911 that is coaxial with the recess 912 and has a diameter smaller than the inner diameter of the recess 912.
  • the hole 911 passes through the base 91 in the x direction. Therefore, a flange 913 that is thinner than the thickness of the base 91 is formed in the recess 912.
  • the surface of the flange portion 913 opposite to the x direction is a plane that intersects the x axis.
  • the diameter of the hole 911 of the flange 913 is larger than the outer diameter of the side surface 52 of the elastic member 5 in the ultrasonic sensor 1.
  • two reinforcing portions 903 projecting from the second surface 902 of the holding member 9 in the direction opposite to the x direction are provided.
  • the dimension (thickness) in the x direction of the reinforcing portion 903 is larger than the thickness of the base 91.
  • the two reinforcing portions 903 are respectively provided on both sides around the recess 912 so as to be aligned in the z direction.
  • Two support portions 92, two ribs 95, and one second arm portion 94 are provided on each surface of the two reinforcing portions 903.
  • the reinforcing portion 903 makes the portion around the hole 911 in the base 91 difficult to bend.
  • the four support portions 92 protrude from the second surface 902 of the holding member 9 in the direction opposite to the x direction.
  • the four support portions 92 are arranged around the recess 912.
  • Two of the four support portions 92 are arranged around the recess 912 on the z direction side of the axis of the recess 912 and aligned in the y direction.
  • the other two support portions 92 out of the four support portions 92 are arranged around the recess 912 opposite to the z direction from the axis of the recess 912 and aligned in the y direction.
  • the support portion 92 is provided with a curved surface 921, a groove 922, a rib 95, and a rib 904.
  • the rib 95 is provided between the support portion 92 and the reinforcement portion 903.
  • the rib 95 is formed integrally with the concave portion 912 and the support portion 92.
  • the rib 95 has a curved surface 952 and a flat surface 951.
  • the curved surface 952 is a curved surface along the surface of the protruding portion 212 in the ultrasonic sensor 1, and is the same curved surface that is continuous with the inner surface of the recess 912.
  • the plane 951 is a plane that intersects the x-axis.
  • the flat surface 951 is formed at a portion in contact with the support portion 92 in the rib 95.
  • the rib 904 protrudes from the surface intersecting the z axis of the support portion 92 in a direction away from the axis of the hole 911 along the z direction.
  • the rib 904 is formed integrally with the support portion 92 and the reinforcement portion 903. The rib 904 limits the amount of bending of the support portion 92 when the support portion 92 is bent in a direction away from the axis of the hole 911.
  • the groove 922 is provided in a portion of the support portion 92 that is close to the axis of the recess 912 in the surface opposite to the axis of the recess 912.
  • the groove 922 is provided to reduce the dimension in the y direction and the dimension in the z direction of the support portion 92 in the support portion 92.
  • the groove 922 is provided so as to reach from the substantially center of the support portion 92 in the x direction to the tip of the support portion 92. More specifically, the groove 922 has a plane 924 and a plane 923.
  • the plane 924 is a plane that intersects the x-axis.
  • the plane 923 is a plane that intersects the z-axis.
  • the curved surface 921 is formed on the surface of the support portion 92 opposite to the surface on which the groove 922 is provided.
  • the curved surface 921 is a curved surface along the side surface 221 of the second cylindrical body 22.
  • the second arm portion 94 is provided between two support portions 92 arranged in the y direction.
  • the second arm portion 94 is formed in a rectangular flat plate shape.
  • the second arm portion 94 is disposed so that the thickness direction is the z direction and protrudes from the reinforcing portion 903 in the direction opposite to the x direction.
  • the dimension of the second arm portion 94 in the y direction is larger than the interval between the two second claws 20 arranged in the y direction in the ultrasonic sensor 1.
  • the second arm portion 94 is provided with a hole 93 that penetrates the second arm portion 94 in the z direction.
  • the hole 93 is formed in a rectangular shape when viewed from the z direction.
  • the locking surface 931 near the tip of the second arm portion 94 is a surface that intersects the x-axis.
  • the dimension of the hole 93 in the y direction (the dimension of the locking surface 931 in the y direction) is larger than the dimension of the second claw portion 20 in the y direction.
  • the dimension in the x direction of the hole 93 is larger than the dimension in the x direction of the second claw portion 20 in the ultrasonic sensor 1.
  • the dimension from the locking surface 931 of the second arm portion 94 to the surface on the opposite side to the x direction of the flange portion 913 is from the surface in the x direction of the flange portion 51 of the elastic member 5 to the second claw portion 20 in the ultrasonic sensor 1. Is substantially equal to the dimension up to the locking surface 201.
  • the plane 941 on the side close to the axis of the hole 911 in the second arm portion 94 is a plane that intersects the z-axis.
  • the dimension from the axis of the hole 911 to the flat surface 941 of the second arm portion 94 is larger than the radius of the concave portion 912 in the reinforcing portion 903. More specifically, the dimension from the axis of the hole 911 of the base 91 to the plane 941 is determined from the axis of the first cylinder 21 of the housing 2 in the ultrasonic sensor 1 to the plane 104 of the first claw part 10 (first claw part 10 Larger than the dimension up to the tip in the z direction).
  • a tapered surface 942 is formed between the flat surface 941 of the second arm portion 94 and the reinforcing portion 903.
  • the tapered surface 942 is formed so that the thickness of the second arm portion 94 becomes thicker as it approaches the reinforcing portion 903.
  • the tapered surface 942 is formed so as not to contact the first claw portion 10 in a state where the ultrasonic sensor 1 is held by the holding member 9 (see FIG. 9).
  • the tapered surface 942 is formed, for example, so as not to overlap the flat surface 104 of the first claw portion 10 in the z direction in a state where the ultrasonic sensor 1 is held by the holding member 9.
  • Tapered surfaces 943 are formed on both sides of the hole 93 in the second arm portion 94 in the y direction.
  • the two tapered surfaces 943 are inclined surfaces between the flat surface 941 and both side surfaces of the second arm portion 94 in the y direction.
  • the tapered surface 943 is formed so that the thickness of the second arm portion 94 decreases as the distance from the hole 93 increases.
  • Each of the two tapered surfaces 943 is a plane parallel to the two tapered surfaces 404 of the guide portion 4 in the ultrasonic sensor 1.
  • the structure in which the ultrasonic sensor 1 is attached to the holding member 9 will be described.
  • the holding member 9 is attached to the second bumper 120 (see FIG. 9), but the second bumper 120 is not shown in FIGS.
  • the operator brings the ultrasonic sensor 1 close to the holding member 9 in a state where the axis of the transducer 3 of the ultrasonic sensor 1 and the axis of the recess 912 of the holding member 9 are aligned.
  • the operator brings the ultrasonic sensor 1 close to the holding member 9 until the flange 3 of the transducer 3 and the elastic member 5 is disposed in the recess 912.
  • the second claw portion 20 of the ultrasonic sensor 1 is pressed in the x direction in a state where the second arm portion 94 of the holding member 9 is in contact with the tapered surface 202 of the second claw portion 20 of the ultrasonic sensor 1. 9 bend in a direction away from each other.
  • both ends in the y direction of the second arm portion 94 of the holding member 9 are less likely to contact (interfere) with the guide portion 4 of the ultrasonic sensor 1.
  • the dimension between the planes 941 of the two second arm portions 94 in the holding member 9 is larger than the dimension between the planes 104 of the two first claw portions 10 of the ultrasonic sensors 1 arranged in the z direction. . Therefore, in the state where each of the two second claws 20 in the ultrasonic sensor 1 is disposed in the hole 93 in the holding member 9, the two first claws 10 and the second arms 94 arranged in the y direction are arranged. There is a gap between them. Therefore, the four first claw portions 10 in the ultrasonic sensor 1 are unlikely to contact (interfere) with the two second arm portions 94 in the holding member 9.
  • each of the two second claw portions 20 in the ultrasonic sensor 1 is disposed in the hole 93 in the holding member 9, the four guide portions 4 are respectively in the grooves 922 of the four support portions 92 in the holding member 9. Placed in.
  • the overhanging portion 402 of the guide portion 4 in the ultrasonic sensor 1 is in contact with the flat surface 923 and the flat surface 924 of the groove 922 of the second arm portion 94.
  • the protruding portion 402 of the guide portion 4 in the ultrasonic sensor 1 is in contact with the flat surface 924, the movement of the housing 2 of the ultrasonic sensor 1 in the x direction is suppressed.
  • the four support portions 92 of the second arm portion 94 can come into contact with a portion close to the bottom plate 64 on the side surface 221 of the second cylindrical body 22 in the ultrasonic sensor 1.
  • the housing 2 in the ultrasonic sensor 1 is supported by the support portions 92 of the four holding members 9. This makes it difficult to cause a position shift.
  • the flange 913 of the recess 912 in the holding member 9 is the flange of the elastic member 5 of the ultrasonic sensor 1.
  • the flange portion 51 is elastically deformed by pressing the portion 51 in the direction opposite to the x direction. Therefore, the housing 2 of the ultrasonic sensor 1 is in a state where movement in the x direction is restricted by the second arm portion 94 of the holding member 9, the flat surface 924 of the groove 922, and the flange portion 913.
  • Each of the curved surfaces 921 of the four support portions 92 in the holding member 9 is in a state where the two second claw portions 20 in the ultrasonic sensor 1 are disposed in the holes 93 in the holding member 9. It contacts the side surface 221 of the cylindrical body 22. Therefore, the housing 2 in the ultrasonic sensor 1 is in a state in which the movement in the z direction and the movement in the y direction are restricted by the recess 912 in the holding member 9, the four ribs 95, and the four support portions 92. . Therefore, the ultrasonic sensor 1 is attached to the holding member 9 in a state in which movement with respect to the holding member 9 is restricted.
  • the ultrasonic sensor 1 includes the housing 2, the first claw portion 10, the second claw portion 20, and the transducer 3.
  • claw part 10 can be hooked on the 1st arm part 82 of the bezel 8 (1st attachment member).
  • the bezel 8 is attached to the first surface 111 (front surface) of the first bumper 110.
  • claw part 20 can be hooked on the 2nd arm part 94 of the holding member 9 (2nd attachment member).
  • the holding member 9 is attached to the second surface 122 (back surface) of the second bumper 120.
  • the first claw portion 10 is formed on the second surface 112 (back surface) from the first surface 111 through the hole 113 in the bezel 8 (first mounting member) attached to the first surface 111 (front surface) of the first bumper 110. It is possible to hook on the protruding first arm portion 82.
  • claw part 20 can be hooked on the 2nd arm part 94 of the holding member 9 (2nd attachment member) attached to the 2nd surface 122 (back surface) of the 2nd bumper 120.
  • the ultrasonic sensor 1 includes the first claw portion 10 and the second claw portion 20, both the bezel 8 that penetrates the first bumper 110 and the holding member 9 that does not penetrate the second bumper 120. It can be attached.
  • claw part 20 are separated.
  • the second claw portion 20 is preferably provided such that a gap is formed between the second claw portion 20 and the first arm portion 82 in a state where the first claw portion 10 is caught by the first arm portion 82. Accordingly, the second claw portion 20 is unlikely to contact (interfere) with the first arm portion 82 in a state where the ultrasonic sensor 1 is attached to the bezel 8 (first attachment member).
  • claw part 20 are separated.
  • the first claw portion 10 is preferably provided such that a gap is formed between the first claw portion 10 and the second arm portion 94 in a state where the second claw portion 20 is caught by the second arm portion 94. This makes it difficult for the first claw portion 10 to contact (interfere) with the second arm portion 94 in a state where the ultrasonic sensor 1 is attached to the holding member 9 (second attachment member).
  • the cylindrical portion 200 has an opening 231 that exposes the ultrasonic wave transmission / reception surface (vibration surface 31) of the transducer 3, and the first claw portion 10 is more open than the second claw portion 20. It is preferable to be provided at a position close to H.231. As a result, the ultrasonic sensor 1 can be attached by hooking the first claw portion 10 on the first arm portion 82 having a protruding size smaller than that of the second arm portion 94.
  • the cylindrical portion 200 includes a first cylindrical body 21 and a second cylindrical body 22 in which the control unit 7 is accommodated, and the second cylindrical body 22 has a larger diameter than the outer diameter of the first cylindrical body 21. It is preferable that the outer diameter is large. Thereby, the volume of the internal space of the cylinder part 200 can be increased. For example, even when the size of the control unit 7 is larger than that of the transducer 3, the control unit 7 can be accommodated in the cylindrical unit 200. Therefore, the ultrasonic sensor 1 including the transducer 3 smaller than the size of the control unit 7 viewed from the x direction can be realized. Further, by reducing the size of the transducer 3, the vibration surface 31 of the transducer 3 exposed from the first bumper 110 and the second bumper 120 can be reduced.
  • the ultrasonic sensor device 301 includes the ultrasonic sensor 1 and the bezel 8 (first mounting member), as shown in FIG.
  • the bezel 8 (first mounting member) has a first arm portion 82 that is attached to the first surface 111 (front surface) of the first bumper 110 and projects to the second surface 112 (back surface).
  • the ultrasonic sensor device 302 includes an ultrasonic sensor 1 and a holding member 9 (second mounting member).
  • the holding member 9 (second attachment member) is attached to the second surface 122 (back surface) of the second bumper 120 and has a second arm portion 94 protruding from the second surface 122 (back surface).
  • the ultrasonic sensor 1 can be used for any of the ultrasonic sensor devices 301 and 302.
  • the bezel 8 is attached to the surface of the first bumper 110.
  • the first arm portion 82 of the bezel 8 projects from the front surface of the first bumper 110 to the back surface through the hole 113 of the first bumper 110.
  • the first arm portion 82 is less likely to bend in the direction away from the axis of the hole 113 by contacting the edge of the hole 113 when it is bent in the direction away from the axis of the hole 113. Therefore, it is difficult for the first arm portion 82 to come off the first claw portion 10 from the state where the first claw portion 10 is disposed in the gap 83 of the first arm portion 82.
  • the holding member 9 is attached to the back surface of the second bumper 120.
  • the holding member 9 holds the housing 2 with the rib 95 of the ultrasonic sensor 1 in contact with the first cylinder 21 of the ultrasonic sensor 1 and the second arm portion 94 in contact with the second cylinder 22 of the ultrasonic sensor 1. Hold. Therefore, the length of the second arm portion 94 (the dimension in the x direction from the surface of the flat surface 903 to the tip of the second arm portion 94) is the length (dimension L2) of the first arm portion 82 of the bezel 8 (see FIG. 6).
  • the holding member 9 can suppress the displacement of the housing 2 with respect to the holding member 9.
  • the projecting dimension of the first arm portion 82 of the bezel 8 from the back surface of the first bumper 110 is the dimension from the second surface 802 of the collar 80 to the tip of the first arm portion 82 (the length of the first arm portion 82). )) By the thickness of the first bumper 110.
  • the ultrasonic sensor 1 is attached to the second surface 112 of the first bumper 110. The protruding dimension from the second surface 112 can be reduced.
  • the ultrasonic sensor 1 is attached to the second surface 112 of the first bumper 110, the dimension from the bottom plate 64 of the ultrasonic sensor 1 to the tip of the first arm portion 82 is reduced, so that the first bumper 110 The protruding dimension from the second surface 112 can be reduced.
  • the plane that bisects the thickness of the portion of the second arm 94 where the plane 941 is formed is the virtual plane M1.
  • the virtual plane M1 is a virtual plane that intersects the z axis and is a plane parallel to the plane 941.
  • the two second arm portions 94 are configured so that the interval in the z direction between the two virtual planes M1 is smaller than the interval in the z direction between the planes 204 of the two second claws 20.
  • the reinforcing portion 903 is provided on the surface. Therefore, the plane 204 of the second claw portion 20 in the ultrasonic sensor 1 is disposed at a position farther from the axis of the hole 911 in the holding member 9 than the virtual plane M1.
  • the dimension in the z direction at the portion where the locking surface 201 of the second claw portion 20 in the ultrasonic sensor 1 and the locking surface 931 of the hole 93 in the holding member 9 are in contact with each other is the second arm portion 94 of the ultrasonic sensor 1. It becomes more than half of the thickness of the part in which the plane 941 is formed.
  • the second claw portion 20 of the ultrasonic sensor 1 protrudes in the thickness direction of the plate-like second arm portion 94 provided on the holding member 9 (second mounting member).
  • the projecting dimension of the second claw portion 20 is more than half the thickness of the second arm portion 94 of the holding member 9.
  • the thickness of the portion of the second arm portion 94 where the tapered surface 942 is provided increases as it approaches the reinforcing portion 903 side (plane 902 side).
  • the tapered surface 942 is provided so as to increase the thickness of the second arm portion 94 from the side close to the axis of the hole 911 in the second arm portion 94 (plane 941 side) toward the axis of the hole 911. Therefore, the surface that bisects the thickness of the portion provided with the tapered surface 942 is located closer to the axis of the hole 911 than the virtual plane M1.
  • the plane 204 of the second claw portion 20 in the ultrasonic sensor 1 is located farther from the axis of the hole 911 than the virtual plane M1, the plane that bisects the thickness of the portion where the tapered surface 942 is provided. And farther away from the axis of the hole 911.
  • the two second arm portions 94 of the holding member 9 exert a force that bends in a direction approaching each other. It will be received from the nail part 20. Accordingly, the two second claw portions 20 in the ultrasonic sensor 1 are unlikely to be detached from the two second arm portions 94 in the holding member 9.
  • claw part 20 of the ultrasonic sensor 1 may be provided in the 1st cylinder 21, and the 1st nail
  • claw part 10 may be provided in the 2nd cylinder 22.
  • the first claw portion 10 and the second claw portion 20 of the ultrasonic sensor 1 may be provided in the housing 2 so as to be aligned along the y direction.
  • the dimension from the first claw 10 of the ultrasonic sensor 1 to the opening 231 of the first cylinder 21 is equal to the dimension from the second cylinder 22 to the opening 231 of the first cylinder 21. May be.
  • the number of the first claw part 10, the second claw part 20, and the guide part 4 of the ultrasonic sensor 1 is an example, and the ultrasonic sensor 1 has an appropriate number of first claw parts 10, second claw parts 20, And the guide part 4 may be provided.
  • the guide part 4 of the ultrasonic sensor 1 can be omitted.
  • the arrangement of the first claw part 10 and the second claw part 20 of the ultrasonic sensor 1 is not limited to the arrangement of the present embodiment, and is arranged at an arbitrary position on the side surface of the cylindrical part 200 of the ultrasonic sensor 1. May be.
  • the first bumper 110 and the second bumper 120 may be bumpers having the same shape.
  • the present invention can be used for an ultrasonic sensor and an ultrasonic sensor device including the same.
  • Ultrasonic sensor device 1 Ultrasonic sensor 2 Housing 200 Tube portion 231 Opening portion 3 Transducer 10 First claw portion 20 Second claw portion 8 Bezel (first attachment member) 82 1st arm part 9 Holding member (2nd attachment member) 94 2nd arm part 110 1st bumper 120 2nd bumper 111 1st surface (surface of 1st bumper) 112 Second side (back side of first bumper) 122 2nd surface (back surface of 2nd bumper)

Abstract

An ultrasonic sensor is provided with a housing, a first claw section, a second claw section, and a transducer. The housing comprises a cylindrical section. The first claw section and the second claw section protrude from the side surface of the cylindrical section. The transducer is accommodated in the cylindrical section and sends/receives ultrasonic waves. A bezel is attached to the surface of a first bumper having a hole provided thereto, and the first claw section is capable of passing through the hole from the surface in said bezel and hooking onto a first arm section protruding from the rear surface. A holding member is attached to the rear surface of a second bumper, and the second claw section is capable of hooking onto a second arm section protruding from the rear surface in the holding member in the thickness direction of the second bumper.

Description

超音波センサ及びそれを備える超音波センサ装置Ultrasonic sensor and ultrasonic sensor device including the same
　本発明は、超音波センサ及びそれを備える超音波センサ装置に関し、より詳細には、バンパーに取り付けられる超音波センサ及びそれを備える超音波センサ装置に関する。 The present invention relates to an ultrasonic sensor and an ultrasonic sensor device including the ultrasonic sensor, and more particularly to an ultrasonic sensor attached to a bumper and an ultrasonic sensor device including the ultrasonic sensor.
　従来、ベゼル部材（第１取付部材）と、超音波センサ本体とからなる超音波センサが知られている（例えば特許文献１参照）。ベゼル部材は、車両のバンパーの表裏に貫通するように穿孔された取付孔にバンパーの表側から挿入されバンパーを表裏から挟持する。超音波センサ本体は、超音波マイクを収納している。超音波センサ本体には組立爪が設けられている。ベゼル部材には弾性変形可能なアーム部が設けられている。アーム部には、組立孔が形成されている。超音波センサ本体は、組立爪と組立孔とが係合することにより、ベゼル部材にバンパーの裏側から結合装着される。 Conventionally, an ultrasonic sensor including a bezel member (first mounting member) and an ultrasonic sensor main body is known (see, for example, Patent Document 1). The bezel member is inserted from the front side of the bumper into a mounting hole drilled so as to penetrate the front and back of the bumper of the vehicle, and sandwiches the bumper from the front and back. The ultrasonic sensor main body houses an ultrasonic microphone. The ultrasonic sensor main body is provided with an assembly claw. The bezel member is provided with an elastically deformable arm portion. An assembly hole is formed in the arm portion. The ultrasonic sensor main body is coupled and mounted to the bezel member from the back side of the bumper by engaging the assembly pawl and the assembly hole.
特開２００４－２５１６６５号公報JP 2004-251665 A
　本開示の超音波センサは、ハウジングと、第１爪部と、第２爪部と、トランスデューサと、を備える。ハウジングは、筒部を有する。第１爪部は、筒部の側面から突出する。第２爪部は、筒部の側面から突出する。トランスデューサは、筒部に収納されて超音波を送受信（送受波）する。第１爪部は、孔が設けられた第１バンパーの表面に取り付けられた第１取付部材において表面から孔を通って裏面に突出する第１腕部に引っかけることが可能である。第２爪部は、第２バンパーの裏面に取り付けられた第２取付部材において裏面から第２バンパーの厚さ方向に突出する第２腕部に引っかけることが可能である。 The ultrasonic sensor of the present disclosure includes a housing, a first claw portion, a second claw portion, and a transducer. The housing has a cylindrical portion. The 1st nail | claw part protrudes from the side surface of a cylinder part. A 2nd nail | claw part protrudes from the side surface of a cylinder part. The transducer is accommodated in the cylindrical portion and transmits / receives (transmits / receives) an ultrasonic wave. The first claw portion can be hooked on the first arm portion protruding from the surface through the hole to the back surface in the first mounting member attached to the surface of the first bumper provided with the hole. The second claw portion can be hooked on the second arm portion protruding from the back surface in the thickness direction of the second bumper in the second mounting member mounted on the back surface of the second bumper.
　この超音波センサにおいて、第１爪部と第２爪部とは離れていることが好ましい。第２爪部は、第１爪部が第１腕部に引っかかった状態で第１腕部との間に隙間ができるように設けられていることが好ましい。 In this ultrasonic sensor, it is preferable that the first claw portion and the second claw portion are separated from each other. The second claw portion is preferably provided so that a gap is formed between the second claw portion and the first arm portion in a state where the first claw portion is caught by the first arm portion.
　この超音波センサにおいて、第１爪部と第２爪部とは離れていることが好ましい。第１爪部は、第２爪部が第２腕部に引っかかった状態で第２腕部との間に隙間ができるように設けられていることが好ましい。 In this ultrasonic sensor, it is preferable that the first claw portion and the second claw portion are separated from each other. The first claw portion is preferably provided so that a gap is formed between the first claw portion and the second arm portion in a state where the second claw portion is caught by the second arm portion.
　この超音波センサにおいて、筒部は、トランスデューサの超音波の送受波面を露出させる開口部を有し、第１爪部は、第２爪部よりも開口部に近い位置に設けられることが好ましい。 In this ultrasonic sensor, it is preferable that the cylindrical portion has an opening exposing the ultrasonic wave transmitting / receiving surface of the transducer, and the first claw portion is provided at a position closer to the opening than the second claw portion.
　この超音波センサにおいて、筒部は、第1筒体と制御部が収納される第２筒体とを含み、第1筒体の外径よりも、第２筒体の外径が大きくなっていることが好ましい。 In this ultrasonic sensor, the cylindrical portion includes a first cylindrical body and a second cylindrical body in which the control unit is accommodated, and the outer diameter of the second cylindrical body is larger than the outer diameter of the first cylindrical body. Preferably it is.
　本開示の超音波センサ装置は、上記した超音波センサと、第１取付部材、又は第２取付部材と、を備えている。第１取付部材は、孔を有する第１バンパーの表面に取り付けられて孔を通って裏面に突出する第１腕部を有する。第２取付部材は、第２バンパーの裏面に取り付けられて裏面から突出する第２腕部を有する。 The ultrasonic sensor device of the present disclosure includes the above-described ultrasonic sensor and the first mounting member or the second mounting member. The first attachment member has a first arm portion that is attached to the surface of the first bumper having a hole and protrudes to the back surface through the hole. The second attachment member has a second arm portion attached to the back surface of the second bumper and protruding from the back surface.
　第１爪部は、第１バンパーの表面に取り付けられた第１取付部材において表面から孔を通って裏面に突出する第１腕部に引っかけることが可能である。第２爪部は、第２バンパーの裏面に取り付けられた第２取付部材の第２腕部に引っかけることが可能である。そのため本開示の超音波センサは、第１爪部と、第２爪部とを備えているので、第１バンパーを貫通する第１取付部材と第２バンパーを貫通しない第２取付部材との両方に取り付け可能である。 The first claw portion can be hooked on the first arm portion protruding from the surface through the hole to the back surface in the first mounting member attached to the surface of the first bumper. The 2nd nail | claw part can be hooked on the 2nd arm part of the 2nd attachment member attached to the back surface of the 2nd bumper. Therefore, since the ultrasonic sensor of the present disclosure includes the first claw portion and the second claw portion, both the first attachment member that penetrates the first bumper and the second attachment member that does not penetrate the second bumper. It can be attached to.
　本開示の超音波センサ装置では、上記した超音波センサを、第１バンパーの表面に取り付けられた第１取付部材の第１腕部に引っかけることが可能であり、第２バンパーの裏面に取り付けられた第２取付部材の第２腕部に引っかけることが可能である。 In the ultrasonic sensor device according to the present disclosure, the above-described ultrasonic sensor can be hooked on the first arm portion of the first attachment member attached to the surface of the first bumper, and attached to the back surface of the second bumper. It is possible to hook onto the second arm portion of the second mounting member.
図１は、実施形態に係る超音波センサの斜視図である。FIG. 1 is a perspective view of the ultrasonic sensor according to the embodiment. 図２Ａは、図１の超音波センサの左側面図である。2A is a left side view of the ultrasonic sensor of FIG. 図２Ｂは、図１の超音波センサの正面図である。FIG. 2B is a front view of the ultrasonic sensor of FIG. 図３は、図１の超音波センサの分解斜視図である。FIG. 3 is an exploded perspective view of the ultrasonic sensor of FIG. 図４は、図１の超音波センサと、第１取付部材とを備えた超音波センサ装置の分解斜視図である。FIG. 4 is an exploded perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member. 図５は、図１の超音波センサと、第１取付部材とを備えた超音波センサ装置の斜視図である。FIG. 5 is a perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member. 図６は、図１の超音波センサと、第１取付部材とを備えた超音波センサ装置のＸ－Ｚ平面の断面図である。FIG. 6 is a cross-sectional view of the ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a first attachment member on the XZ plane. 図７は、図１の超音波センサと、第２取付部材とを備えた超音波センサ装置の分解斜視図である。FIG. 7 is an exploded perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member. 図８は、図１の超音波センサと、第２取付部材とを備えた超音波センサ装置の斜視図である。FIG. 8 is a perspective view of an ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member. 図９は、図１の超音波センサと、第２取付部材とを備えた超音波センサ装置のＸ－Ｚ平面の断面図である。FIG. 9 is a cross-sectional view of the XZ plane of the ultrasonic sensor device including the ultrasonic sensor of FIG. 1 and a second attachment member.
　本発明の実施の形態の説明に先立ち、従来における問題点を簡単に説明する。車両のバンパーの孔を貫通しない取付部材（第２取付部材）を用いて超音波センサを車両のバンパーに取り付ける方法が知られている。ベゼル部材（第１取付部材）と取付部材とで超音波センサをバンパーに取り付ける構造が異なる場合、ベゼル部材と取付部材との形状に応じて超音波センサ本体を形成しなければ、超音波センサ本体をバンパーに取り付けることができない。 Prior to the description of the embodiment of the present invention, the conventional problems will be briefly described. There is known a method of attaching an ultrasonic sensor to a vehicle bumper using an attachment member (second attachment member) that does not pass through a hole of a vehicle bumper. When the structure for attaching the ultrasonic sensor to the bumper is different between the bezel member (first attachment member) and the attachment member, the ultrasonic sensor main body must be formed unless the ultrasonic sensor main body is formed according to the shape of the bezel member and the attachment member. Cannot be attached to the bumper.
　本開示は上記問題に鑑みてなされ、バンパーを貫通する第１取付部材とバンパーを貫通しない第２取付部材との両方に取り付け可能な超音波センサ及びそれを備える超音波センサ装置を提供することを目的とする。 This indication is made in view of the above-mentioned problem, and provides an ultrasonic sensor which can be attached to both the 1st attachment member which penetrates a bumper, and the 2nd attachment member which does not penetrate a bumper, and an ultrasonic sensor device provided with the same Objective.
　本実施形態の超音波センサ１について図１～図９を参照して説明する。 The ultrasonic sensor 1 of the present embodiment will be described with reference to FIGS.
　超音波センサ１は、例えば、車両のバンパーに取り付けられる。超音波センサ１は、超音波を送信し、超音波の反射波を受信する。超音波センサ１は、例えば、バンパー付近の物体の有無（存否）を判定したり、バンパー付近の物体までの距離を求めたりすることができるように構成されている。 The ultrasonic sensor 1 is attached to a vehicle bumper, for example. The ultrasonic sensor 1 transmits ultrasonic waves and receives reflected ultrasonic waves. The ultrasonic sensor 1 is configured so as to be able to determine, for example, the presence or absence (presence / absence) of an object near the bumper and to obtain the distance to the object near the bumper.
　超音波センサ１は、図１に示すように、ハウジング２と、第１爪部１０と、第２爪部２０と、トランスデューサ３と、を備える。ハウジング２は、筒部２００を有する。第１爪部１０は、筒部２００の側面から突出する。第２爪部２０は、筒部２００の側面から突出する。トランスデューサ３は、筒部２００に収納されて超音波を送受信する。第１爪部１０は、図６に示す孔１１３を有する第１バンパー１１０の第１面１１１（表面）に取り付けられたベゼル８（第１取付部材）において、第１面１１１（表面）から孔１１３を通って第２面１１２（裏面）に突出する第１腕部８２に引っかけることが可能である。第２爪部２０は、図９に示す、第２バンパー１２０の第２面１２２（裏面）に取り付けられた保持部材９（第２取付部材）において、第２面１２２（裏面）から第２バンパー１２０の厚さ方向に突出する第２腕部９４に引っかけることが可能である。 As shown in FIG. 1, the ultrasonic sensor 1 includes a housing 2, a first claw part 10, a second claw part 20, and a transducer 3. The housing 2 has a cylindrical portion 200. The first claw portion 10 protrudes from the side surface of the tube portion 200. The second claw portion 20 protrudes from the side surface of the cylindrical portion 200. The transducer 3 is accommodated in the cylindrical portion 200 and transmits and receives ultrasonic waves. The first claw portion 10 has a hole from the first surface 111 (front surface) in the bezel 8 (first mounting member) attached to the first surface 111 (front surface) of the first bumper 110 having the hole 113 shown in FIG. It is possible to hook the first arm portion 82 that protrudes from the second surface 112 (back surface) through the first arm portion 113. In the holding member 9 (second mounting member) attached to the second surface 122 (back surface) of the second bumper 120 shown in FIG. 9, the second claw portion 20 extends from the second surface 122 (back surface) to the second bumper. The second arm portion 94 protruding in the thickness direction of 120 can be hooked.
　以下の説明では、図１～図９のそれぞれにおいて右下に示すｘ，ｙ，ｚをそれぞれ指す矢印の方向をそれぞれ、ｘ方向、ｙ方向、ｚ方向と規定して説明する。例えば、ｘ方向とは、筒部２００の軸と平行し、かつトランスデューサ３が超音波を送信する方向である。ｙ方向及びｚ方向は、ｘ軸と直交する平面において直交する方向である。 In the following description, the directions of arrows indicating x, y, and z shown at the lower right in each of FIGS. 1 to 9 are defined as an x direction, a y direction, and a z direction, respectively. For example, the x direction is a direction parallel to the axis of the cylindrical portion 200 and the transducer 3 transmitting ultrasonic waves. The y direction and the z direction are directions orthogonal to each other on a plane orthogonal to the x axis.
　トランスデューサ３は、超音波の送受信する送受波面を有する。トランスデューサ３は、図１に示すように、振動面３１で超音波を送受信する。つまり、振動面３１が超音波の送受波面である。振動面３１は、例えば有底円筒状のケースの外側の底面である。トランスデューサ３のケースは、ｘ方向の逆方向に開口している。ケースの内側の底面には、超音波振動子（圧電素子）が取り付けられている。超音波振動子は、制御部７（図３参照）と電気的に接続されている。超音波振動子は、制御部７からの電気信号によって振動する。トランスデューサ３は、振動面３１を振動させて超音波を送信する。また、振動面３１は超音波の反射波を受信すると、振動する。超音波振動子は、その振動に応じて電気信号を制御部７に出力する。制御部７は、例えばマイクロコンピュータが実装された基板を含む。マイクロコンピュータは、超音波振動子からの電気信号に基づいて、物体の有無（存否）及びその物体までの距離を求めることができる。 The transducer 3 has a transmission / reception surface for transmitting and receiving ultrasonic waves. As shown in FIG. 1, the transducer 3 transmits and receives ultrasonic waves on the vibration surface 31. That is, the vibration surface 31 is an ultrasonic wave transmission / reception surface. The vibration surface 31 is, for example, a bottom surface on the outside of a bottomed cylindrical case. The case of the transducer 3 opens in the direction opposite to the x direction. An ultrasonic transducer (piezoelectric element) is attached to the bottom surface inside the case. The ultrasonic transducer is electrically connected to the control unit 7 (see FIG. 3). The ultrasonic vibrator is vibrated by an electric signal from the control unit 7. The transducer 3 vibrates the vibration surface 31 and transmits ultrasonic waves. Further, the vibration surface 31 vibrates when receiving an ultrasonic reflected wave. The ultrasonic transducer outputs an electrical signal to the control unit 7 in accordance with the vibration. The control unit 7 includes, for example, a substrate on which a microcomputer is mounted. The microcomputer can determine the presence / absence (presence / absence) of an object and the distance to the object based on the electrical signal from the ultrasonic transducer.
　ハウジング２は、樹脂材料により形成される。ハウジング２の筒部２００は、図１～図３に示すように、第１筒体２１と、第２筒体２２とを含む。筒部２００は、軸がｘ方向を向く有底筒状に形成されている。筒部２００の一端には、開口部２３１が設けられている。筒部２００は、内部空間に、制御部７と、トランスデューサ３を収納する。筒部２００の側面には、コネクタ２３が設けられている。 The housing 2 is formed of a resin material. The cylindrical portion 200 of the housing 2 includes a first cylindrical body 21 and a second cylindrical body 22, as shown in FIGS. The cylinder part 200 is formed in a bottomed cylinder shape whose axis faces the x direction. An opening 231 is provided at one end of the cylindrical portion 200. The cylinder part 200 accommodates the control part 7 and the transducer 3 in the internal space. A connector 23 is provided on the side surface of the cylindrical portion 200.
　第１筒体２１は、円筒状に形成されている。第１筒体２１の軸はｘ方向に沿う。第１筒体２１のｘ方向の端には開口部２３１（図３参照）が形成されている。第１筒体２１の開口部２３１の内径は、トランスデューサ３の外径よりも大きい。第１筒体２１の内部空間にはトランスデューサ３の一部が収納される。第１筒体２１は、開口部２３１内に収納されたトランスデューサ３と同軸となるように形成されている。第１筒体２１のｘ方向と逆方向の端は第２筒体２２とつながっており、第１筒体２１の内部空間は第２筒体２２の内部空間とつながっている。 The first cylinder 21 is formed in a cylindrical shape. The axis of the first cylinder 21 is along the x direction. An opening 231 (see FIG. 3) is formed at the end of the first cylinder 21 in the x direction. The inner diameter of the opening 231 of the first cylinder 21 is larger than the outer diameter of the transducer 3. A part of the transducer 3 is accommodated in the internal space of the first cylinder 21. The first cylinder 21 is formed to be coaxial with the transducer 3 housed in the opening 231. The end of the first cylinder 21 opposite to the x direction is connected to the second cylinder 22, and the internal space of the first cylinder 21 is connected to the internal space of the second cylinder 22.
　第２筒体２２は、筒状に形成されている。第２筒体２２の軸は、第１筒体２１の軸上にあって、ｘ方向から見てｙ方向に扁平な角筒状に形成されている。第２筒体２２の周面には、ｚ方向と交差する平面２２２が形成されている。第２筒体２２は、ｚ方向の寸法よりもｙ方向の寸法の方が長い。第２筒体２２における側面２２１の角部分は丸くなっている。 The second cylinder 22 is formed in a cylindrical shape. The axis of the second cylinder 22 is on the axis of the first cylinder 21 and is formed in a rectangular cylinder shape that is flat in the y direction when viewed from the x direction. A flat surface 222 that intersects the z direction is formed on the peripheral surface of the second cylindrical body 22. The second cylinder 22 has a dimension in the y direction that is longer than a dimension in the z direction. The corner portion of the side surface 221 in the second cylinder 22 is rounded.
　第２筒体２２のｙ方向の寸法は、第１筒体２１の外径よりも大きい。第２筒体２２の厚さは、第１筒体２１の厚さと同じであるため、第２筒体２２の内部空間は、第１筒体２１の内部空間と比べて、ｙ方向に広くなっている。第２筒体２２の内部空間は、第１筒体２１の内部空間とつながっている。 The dimension of the second cylinder 22 in the y direction is larger than the outer diameter of the first cylinder 21. Since the thickness of the second cylinder 22 is the same as the thickness of the first cylinder 21, the internal space of the second cylinder 22 is wider in the y direction than the internal space of the first cylinder 21. ing. The internal space of the second cylinder 22 is connected to the internal space of the first cylinder 21.
　第２筒体２２の内部空間には、制御部７が収納される。第２筒体２２の内部空間におけるｙ方向の寸法は、第１筒体２１の外径よりも大きいので、例えば制御部７の基板の大きさが第１筒体２１の外径より大きい場合であっても、第２筒体２２内に制御部７が収納可能である。第２筒体２２のｘ方向と反対側の開口部は、制御部７が第２筒体２２内に収納された状態で、底板６４によって塞がれる。 The control unit 7 is accommodated in the internal space of the second cylinder 22. Since the dimension in the y direction in the internal space of the second cylinder 22 is larger than the outer diameter of the first cylinder 21, for example, when the size of the substrate of the control unit 7 is larger than the outer diameter of the first cylinder 21. Even if it exists, the control part 7 can be accommodated in the 2nd cylinder 22. FIG. The opening on the opposite side to the x direction of the second cylinder 22 is closed by the bottom plate 64 in a state where the control unit 7 is housed in the second cylinder 22.
　トランスデューサ３は、振動面３１及び側面３２の一部を開口部２３１から突き出した状態で、第１筒体２１と同軸となるように筒部２００に収納される。第１筒体２１から突き出たトランスデューサ３の側面３２は、弾性部材５によって覆われている。 The transducer 3 is accommodated in the cylindrical portion 200 so as to be coaxial with the first cylindrical body 21 with a part of the vibration surface 31 and the side surface 32 protruding from the opening 231. A side surface 32 of the transducer 3 protruding from the first cylinder 21 is covered with the elastic member 5.
　トランスデューサ３と第１筒体２１との間には、台座６３と、固定部材６２と、カバー６１とが配置されている。台座６３、固定部材６２及びカバー６１は、例えばゴムなどの弾性材料からなる。台座６３、固定部材６２及びカバー６１は、リング状に形成されている。台座６３は、第１筒体２１の内側面２３２から軸に向かって突き出た鍔部２３４の表面に配置される。トランスデューサ３は、ｘ方向に沿って台座６３、トランスデューサ３、固定部材６２、カバー６１、弾性部材５、の順に並んだ状態で筒部２００内に収納される。 A pedestal 63, a fixing member 62, and a cover 61 are disposed between the transducer 3 and the first cylinder 21. The pedestal 63, the fixing member 62, and the cover 61 are made of an elastic material such as rubber, for example. The pedestal 63, the fixing member 62, and the cover 61 are formed in a ring shape. The pedestal 63 is disposed on the surface of the flange portion 234 that protrudes from the inner surface 232 of the first cylindrical body 21 toward the axis. The transducer 3 is housed in the cylindrical portion 200 in a state in which the pedestal 63, the transducer 3, the fixing member 62, the cover 61, and the elastic member 5 are arranged in this order along the x direction.
　固定部材６２及びカバー６１の内径は、トランスデューサ３の外径とほぼ同じである。固定部材６２及びカバー６１は、それぞれの孔にトランスデューサ３が通された状態で、トランスデューサ３の側面３２と、第１筒体２１の内側面２３２との間に配置される。カバー６１は、トランスデューサ３と第１筒体２１の内側面２３２との隙間を塞ぐ。固定部材６２は、トランスデューサ３に接し、かつカバー６１と台座６３とに挟まれることで、トランスデューサ３の移動を規制する。台座６３は、第１筒体２１からトランスデューサ３に振動が伝わることを抑制する。また台座６３は、トランスデューサ３から第１筒体２１に振動が伝わることも抑制する。台座６３、固定部材６２、カバー６１により、第１筒体２１の内側面２３２とトランスデューサ３との間に隙間が生じにくくなっている。 The inner diameters of the fixing member 62 and the cover 61 are substantially the same as the outer diameter of the transducer 3. The fixing member 62 and the cover 61 are disposed between the side surface 32 of the transducer 3 and the inner side surface 232 of the first cylindrical body 21 with the transducer 3 being passed through the respective holes. The cover 61 closes the gap between the transducer 3 and the inner surface 232 of the first cylinder 21. The fixing member 62 is in contact with the transducer 3 and is sandwiched between the cover 61 and the pedestal 63 to restrict the movement of the transducer 3. The pedestal 63 suppresses vibration from being transmitted from the first cylinder 21 to the transducer 3. The pedestal 63 also prevents vibration from being transmitted from the transducer 3 to the first cylinder 21. The pedestal 63, the fixing member 62, and the cover 61 make it difficult for a gap to be formed between the inner surface 232 of the first cylinder 21 and the transducer 3.
　弾性部材５は、例えばゴムなどの軟質樹脂材料からなる。弾性部材５は、両端が開口した円筒状に形成されている。弾性部材５の内径は、トランスデューサ３の外径とほぼ等しい。弾性部材５におけるｘ方向と逆方向の端には、径方向に突き出た鍔部５１が形成されている。鍔部５１の外径は、第１筒体２１における側面２１０の外径とほぼ同じである。トランスデューサ３において第１筒体２１の開口部２３１からｘ方向に突き出た部位は、弾性部材５の孔に通される。つまりトランスデューサ３における筒部２００から露出する部位は、弾性部材５によって囲まれる。弾性部材５は、ベゼル８及び保持部材９からの振動がトランスデューサ３に伝わることを抑制する。また弾性部材５は、トランスデューサ３からベゼル８及び保持部材９に振動が伝わることも抑制する。 The elastic member 5 is made of a soft resin material such as rubber. The elastic member 5 is formed in a cylindrical shape with both ends opened. The inner diameter of the elastic member 5 is substantially equal to the outer diameter of the transducer 3. A flange 51 protruding in the radial direction is formed at the end of the elastic member 5 in the direction opposite to the x direction. The outer diameter of the flange 51 is substantially the same as the outer diameter of the side surface 210 of the first cylinder 21. A portion of the transducer 3 protruding in the x direction from the opening 231 of the first cylinder 21 is passed through the hole of the elastic member 5. That is, the portion of the transducer 3 exposed from the cylindrical portion 200 is surrounded by the elastic member 5. The elastic member 5 suppresses the vibration from the bezel 8 and the holding member 9 from being transmitted to the transducer 3. The elastic member 5 also suppresses vibration from being transmitted from the transducer 3 to the bezel 8 and the holding member 9.
　ハウジング２におけるｘ方向と逆方向の開口部には、制御部７が配置される。制御部７は、トランスデューサ３を制御して、トランスデューサ３に超音波の送受信を行わせる。制御部７の基板は、例えばねじ止めなどにより第２筒体２２内に固定される。 A controller 7 is disposed in the opening of the housing 2 in the direction opposite to the x direction. The control unit 7 controls the transducer 3 to cause the transducer 3 to transmit / receive ultrasonic waves. The board | substrate of the control part 7 is fixed in the 2nd cylinder 22 by screwing etc., for example.
　ハウジング２におけるｘ方向と逆方向の開口部は、底板６４によって塞がれる。また、ハウジング２の内部には、樹脂材料が充填される。これにより、ハウジング２内に水及び埃などの異物が侵入しにくくなっている。なお、底板６４とハウジング２とを接着剤などで接着してハウジング２の内部空間の密閉性を確保できる場合には、樹脂材料の充填を省略することができる。また、ハウジング２の内部空間に充填された樹脂材料によりハウジング２の内部空間の密閉性を確保できる場合には、底板６４を省略することができる。 The opening in the direction opposite to the x direction in the housing 2 is closed by the bottom plate 64. The housing 2 is filled with a resin material. This makes it difficult for foreign matter such as water and dust to enter the housing 2. In addition, when the bottom plate 64 and the housing 2 can be bonded with an adhesive or the like to ensure the hermeticity of the internal space of the housing 2, the filling of the resin material can be omitted. Further, when the sealing property of the internal space of the housing 2 can be secured by the resin material filled in the internal space of the housing 2, the bottom plate 64 can be omitted.
　トランスデューサ３は、超音波振動子を振動させて振動面３１から超音波を送信する。トランスデューサ３は、超音波の反射波を振動面３１で受信する。超音波の反射波を受信した際に生じる振動面３１の振動によって超音波振動子に電圧が生じる。制御部７には、超音波振動子からの電圧信号が制御部７のマイクロコンピュータに入力される。マイクロコンピュータは、一例として、振動面３１から超音波を送信してから振動面３１で反射波を受信する時点までの時間差に基づいて、振動面３１から、超音波を反射させた物体までの距離を演算などにより求める。 The transducer 3 vibrates the ultrasonic vibrator and transmits ultrasonic waves from the vibration surface 31. The transducer 3 receives the reflected ultrasonic wave at the vibration surface 31. A voltage is generated in the ultrasonic vibrator due to the vibration of the vibration surface 31 generated when the reflected ultrasonic wave is received. A voltage signal from the ultrasonic transducer is input to the control unit 7 to the microcomputer of the control unit 7. As an example, the microcomputer, based on the time difference from when the ultrasonic wave is transmitted from the vibration surface 31 to when the reflected wave is received by the vibration surface 31, is the distance from the vibration surface 31 to the object that has reflected the ultrasonic wave. Is obtained by calculation or the like.
　次に、ハウジング２の詳細な構造について図１、図２Ａ及び図２Ｂを参照して説明する。 Next, the detailed structure of the housing 2 will be described with reference to FIGS. 1, 2A and 2B.
　第１筒体２１には、４つの第１爪部１０が設けられている。より詳細には、第１筒体２１におけるｚ方向側の側面２１０に、２つの第１爪部１０が設けられている。第１筒体２１におけるｚ方向の逆方向側の側面２１０に、残りの２つの第１爪部１０が設けられている。以下の説明では、第１筒体２１におけるｚ方向の側面２１０に設けられた２つの第１爪部１０について説明する。 The first cylinder 21 is provided with four first claw portions 10. More specifically, two first claw portions 10 are provided on the side surface 210 on the z direction side of the first cylindrical body 21. The remaining two first claw portions 10 are provided on the side surface 210 of the first cylindrical body 21 on the opposite side to the z direction. In the following description, the two first claw portions 10 provided on the side surface 210 in the z direction of the first cylindrical body 21 will be described.
　２つの第１爪部１０は、第１筒体２１の側面２１０からｚ方向に突き出るように設けられている。２つの第１爪部１０は、ｙ方向に並んでいる。２つの第１爪部１０にはそれぞれ、テーパー面１０２が形成されている。テーパー面１０２は、第１爪部１０におけるｘ方向側の端部分の突き出し寸法が、第１爪部１０におけるｘ方向の逆方向の突き出し寸法よりも小さくなるように形成されている。第１爪部１０におけるｘ方向と逆方向の部位には、係止面１０１が形成されている。係止面１０１は、ｘ軸と交差する面である。第１筒体２１の側面２１０における第１爪部１０と第２筒体２２との間には、張出部１０５が形成されている。張出部１０５は、第１筒体２１の側面２１０から第１筒体２１の径方向に張り出ている。張出部１０５のｙ方向の寸法は、第１爪部１０のｙ方向の寸法とほぼ等しい。張出部１０５には、ｚ方向と交差する平面１０３が形成されている。平面１０３は、第２筒体２２の平面２２２と面一になっている。 The two first claw portions 10 are provided so as to protrude from the side surface 210 of the first cylindrical body 21 in the z direction. The two first claw portions 10 are arranged in the y direction. Each of the two first claw portions 10 is formed with a tapered surface 102. The tapered surface 102 is formed so that the protruding dimension of the end portion on the x direction side of the first claw portion 10 is smaller than the protruding dimension of the first claw portion 10 in the reverse direction of the x direction. A locking surface 101 is formed at a portion of the first claw portion 10 in the direction opposite to the x direction. The locking surface 101 is a surface that intersects the x-axis. An overhang portion 105 is formed between the first claw portion 10 and the second cylinder 22 on the side surface 210 of the first cylinder 21. The overhang part 105 projects from the side surface 210 of the first cylinder 21 in the radial direction of the first cylinder 21. The dimension of the overhang part 105 in the y direction is substantially equal to the dimension of the first claw part 10 in the y direction. A flat surface 103 that intersects the z direction is formed in the overhang portion 105. The plane 103 is flush with the plane 222 of the second cylinder 22.
　第１筒体２１には、４つの張出部２１２が設けられている。より詳細には、第１筒体２１におけるｚ方向側の側面２１０に、２つの張出部２１２が設けられている。第１筒体２１におけるｚ方向の逆方向側の側面２１０に、残りの２つの張出部２１２が設けられている。以下の説明では、第１筒体２１におけるｚ方向の側面２１０に設けられた２つの張出部２１２について説明する。２つの張出部２１２は、２つの第１爪部１０の両側に設けられている。言い換えると、２つの張出部２１２の間に、２つの第１爪部１０が設けられている。張出部２１２は、第１筒体２１の側面２１０からｙ方向及びｚ方向にそれぞれ張り出している。張出部２１２には、ｚ軸と交差する平面と平行する平面２１３が形成されている。平面２１３は、張出部２１２における第１爪部１０と隣り合う部位に形成される。また張出部２１２には、ｘ軸と交差する平面と平行する平面２１４が形成されている。 The first tubular body 21 is provided with four overhanging portions 212. More specifically, two projecting portions 212 are provided on the side surface 210 on the z-direction side of the first cylindrical body 21. The remaining two overhang portions 212 are provided on the side surface 210 of the first cylinder 21 on the opposite side to the z direction. In the following description, the two overhang portions 212 provided on the side surface 210 in the z direction of the first cylindrical body 21 will be described. The two overhang portions 212 are provided on both sides of the two first claw portions 10. In other words, two first claw portions 10 are provided between the two overhang portions 212. The overhanging portion 212 protrudes from the side surface 210 of the first cylinder 21 in the y direction and the z direction, respectively. A plane 213 that is parallel to a plane that intersects the z-axis is formed in the overhanging portion 212. The flat surface 213 is formed at a portion adjacent to the first claw portion 10 in the overhang portion 212. The overhanging portion 212 is formed with a plane 214 that is parallel to a plane that intersects the x-axis.
　第１爪部１０においてｚ方向に突き出た部位の先端には、平面１０４が形成されている。平面１０４は、ｚ軸と交差する平面（ｘ軸及びｙ軸を含む平面）である。 A flat surface 104 is formed at the tip of the first claw portion 10 protruding in the z direction. The plane 104 is a plane that intersects the z-axis (a plane including the x-axis and the y-axis).
　２つの第１爪部１０と２つ張出部２１２とは、図２Ａ及び図２Ｂに示すように、第１筒体２１の軸で対称となるように、第１筒体２１におけるｚ方向側の側面２１０と、ｚ方向と反対側の側面２１０とに設けられている。なお、第１筒体２１におけるｚ方向と反対側の側面２１０に設けられた２つの第１爪部１０と２つ張出部２１２については、「ｚ方向」を「ｚ方向と逆方向」に読み替えればよいので、説明を省略する。 As shown in FIGS. 2A and 2B, the two first claw portions 10 and the two overhang portions 212 are symmetric with respect to the axis of the first cylinder body 21, so that the z-direction side in the first cylinder body 21 is Side surface 210 and side surface 210 opposite to the z direction. For the two first claw portions 10 and the two overhanging portions 212 provided on the side surface 210 opposite to the z direction in the first cylindrical body 21, the “z direction” is changed to the “opposite direction to the z direction”. The description is omitted because it may be replaced.
　第２筒体２２の側面には、２つの第２爪部２０と、４つのガイド部４と、２つの平面２２２と、が設けられている。２つの平面２２２はそれぞれ、第２筒体２２のｚ方向側の側面と、第２筒体２２のｚ方向と反対側の側面とに設けられている。平面２２２には、１つの第２爪部２０と、２つのガイド部４と、が設けられている。以下、第２筒体２２におけるｚ方向側の平面２２２に設けられた１つの第２爪部２０及び２つのガイド部４について説明する。 Two side claws 20, four guides 4, and two planes 222 are provided on the side surface of the second cylinder 22. The two flat surfaces 222 are respectively provided on the side surface on the z direction side of the second cylindrical body 22 and the side surface on the opposite side to the z direction of the second cylindrical body 22. On the plane 222, one second claw portion 20 and two guide portions 4 are provided. Hereinafter, one second claw portion 20 and two guide portions 4 provided on the plane 222 on the z direction side in the second cylindrical body 22 will be described.
　第２爪部２０は、平面２２２からｚ方向に突き出ている。第２爪部２０は、平面２２２からｚ方向に突き出るように設けられている。第２爪部２０には、テーパー面２０２が形成されている。テーパー面２０２は、第２爪部２０における第２筒体２２の側面２２１からの突き出し寸法がｘ方向に向かって小さくなるように形成されている。第２爪部２０におけるｘ方向と逆方向の部位には、係止面２０１が形成されている。係止面２０１は、ｘ軸と交差する面である。第２爪部２０には、テーパー面２０２と平面２０３とに共通する溝２０５がｘ方向に沿って設けられている。溝２０５は、第２爪部２０の成形時に樹脂材料が収縮して第２爪部２０にひけが発生することを抑制するために設けられている。 The second claw portion 20 protrudes from the plane 222 in the z direction. The 2nd nail | claw part 20 is provided so that it may protrude in the z direction from the plane 222. A tapered surface 202 is formed on the second claw portion 20. The tapered surface 202 is formed such that the protruding dimension of the second claw portion 20 from the side surface 221 of the second cylinder 22 decreases in the x direction. A locking surface 201 is formed at a portion of the second claw portion 20 in the direction opposite to the x direction. The locking surface 201 is a surface that intersects the x-axis. A groove 205 common to the tapered surface 202 and the flat surface 203 is provided in the second claw portion 20 along the x direction. The groove 205 is provided to prevent the resin material from contracting when the second claw portion 20 is molded and causing sink marks in the second claw portion 20.
　第２爪部２０におけるｘ方向側の先端部分には、平面２０３が形成されている。第２爪部２０の平面２０３から鍔部５１のｙ方向側の表面までの寸法を「寸法Ｌ１」と呼ぶ。寸法Ｌ１（図６参照）は、詳しくは後述するが、第２爪部２０とベゼル８とが干渉しないような大きさに定められている。 A flat surface 203 is formed at the tip of the second claw portion 20 on the x direction side. The dimension from the flat surface 203 of the second claw part 20 to the surface of the collar part 51 on the y direction side is referred to as “dimension L1”. Although the dimension L1 (refer FIG. 6) is mentioned in detail later, it is set to the magnitude | size which the 2nd nail | claw part 20 and the bezel 8 do not interfere.
　第２筒体２２の平面２２２には、２つのガイド部４が形成されている。２つのガイド部４はそれぞれ、第２爪部２０の両側に設けられている。ガイド部４は、突出部４０１と、張出部４０２と、からなる。突出部４０１は、第２筒体２２の平面２２２からｚ方向に突き出るように設けられている。張出部４０２は、突出部４０１における第２爪部２０と反対側の側面から、ｙ方向に突き出ている。第２筒体２２の側面２２１と、突出部４０１と、張出部４０２とにより、凹部４０３が形成されている。突出部４０１における第２筒体２２と隣り合う部位には、テーパー面４０４が形成されている。テーパー面４０４は、突出部４０１の突き出し寸法が第２筒体２２に近づくにつれて小さくなるように形成されている。 Two guide portions 4 are formed on the flat surface 222 of the second cylindrical body 22. The two guide portions 4 are respectively provided on both sides of the second claw portion 20. The guide part 4 includes a protruding part 401 and an overhang part 402. The protruding portion 401 is provided so as to protrude in the z direction from the plane 222 of the second cylindrical body 22. The overhanging portion 402 protrudes in the y direction from the side surface of the protruding portion 401 opposite to the second claw portion 20. A concave portion 403 is formed by the side surface 221 of the second cylindrical body 22, the protruding portion 401, and the overhang portion 402. A tapered surface 404 is formed at a portion adjacent to the second cylindrical body 22 in the protruding portion 401. The tapered surface 404 is formed so that the protruding dimension of the protruding portion 401 becomes smaller as it approaches the second cylindrical body 22.
　第２爪部２０においてｚ方向に突き出た部位の先端には、平面２０４が形成されている。平面２０４は、ｚ軸と交差する平面（ｘ軸及びｙ軸を含む平面）である。 A flat surface 204 is formed at the tip of the portion protruding in the z direction in the second claw portion 20. The plane 204 is a plane that intersects the z-axis (a plane that includes the x-axis and the y-axis).
　第２爪部２０及び２つのガイド部４は、図２Ａ及び図２Ｂに示すように、第２筒体２２におけるｚ方向と反対側の平面２２２にも設けられている。なお、第２筒体２２におけるｚ方向と反対側の平面２２２に設けられた第２爪部２０及び２つのガイド部４については、「ｚ方向」を「ｚ方向と逆方向」に読み替えればよいので、説明を省略する。 The 2nd nail | claw part 20 and the two guide parts 4 are provided also in the plane 222 on the opposite side to the z direction in the 2nd cylinder 22, as shown to FIG. 2A and 2B. In addition, regarding the second claw portion 20 and the two guide portions 4 provided on the plane 222 opposite to the z direction in the second cylindrical body 22, the “z direction” can be read as “a direction opposite to the z direction”. Since it is good, explanation is omitted.
　コネクタ２３は、円筒状に形成された周壁２３０と、その周壁の内部に配置されたピンとを含む。周壁２３０はｙ方向に沿う。コネクタ２３は、ｙ方向から見てｚ方向に扁平な円筒状に形成されている。コネクタ２３は、第１筒体２１の側面２１０及び第２筒体２２の側面２２１とつながっている。コネクタ２３の内部空間は、第１筒体２１の内部空間及び第２筒体２２の内部空間とつながっている。コネクタ２３の内部空間には、制御部７に電気的に接続された接続ピンが配置されている。コネクタ２３の内部空間には、例えば接続ピンに接続するケーブル端子が挿入される。ケーブル端子のケーブルには、例えば制御部７を制御する制御信号が流される。 The connector 23 includes a peripheral wall 230 formed in a cylindrical shape and pins arranged inside the peripheral wall. The peripheral wall 230 is along the y direction. The connector 23 is formed in a cylindrical shape that is flat in the z direction when viewed from the y direction. The connector 23 is connected to the side surface 210 of the first cylinder body 21 and the side surface 221 of the second cylinder body 22. The internal space of the connector 23 is connected to the internal space of the first cylinder 21 and the internal space of the second cylinder 22. In the internal space of the connector 23, connection pins that are electrically connected to the control unit 7 are arranged. In the internal space of the connector 23, for example, a cable terminal connected to the connection pin is inserted. For example, a control signal for controlling the control unit 7 is supplied to the cable at the cable terminal.
　次に、超音波センサ１が取り付けられるベゼル８について、図４、図５及び図６を参照して説明する。 Next, the bezel 8 to which the ultrasonic sensor 1 is attached will be described with reference to FIGS.
　ベゼル８は、例えば車両の第１バンパー１１０（図６参照）に取り付けられる。第１バンパー１１０には、第１バンパー１１０をｘ方向に貫く孔１１３が設けられている。ベゼル８は、２つの第１腕部８２を有する。２つの第１腕部８２は、第１バンパー１１０の第１面１１１側から第１バンパー１１０に設けられた孔１１３を通されて、第１バンパー１１０の第２面１１２側に突き出る。超音波センサ１は、２つの第１腕部８２に挟まれることにより、ベゼル８に取り付けられる。以下、ベゼル８について説明する。 The bezel 8 is attached to the first bumper 110 (see FIG. 6) of the vehicle, for example. The first bumper 110 is provided with a hole 113 that penetrates the first bumper 110 in the x direction. The bezel 8 has two first arm portions 82. The two first arm portions 82 project from the first surface 111 side of the first bumper 110 through the hole 113 provided in the first bumper 110 and protrude toward the second surface 112 side of the first bumper 110. The ultrasonic sensor 1 is attached to the bezel 8 by being sandwiched between the two first arm portions 82. Hereinafter, the bezel 8 will be described.
　ベゼル８は更に、筒体８１と、鍔部８０と、４つの支持部８５と、を有する。ベゼル８は、樹脂材料で形成されている。筒体８１の軸はｘ方向に沿う。鍔部８０は、筒体８１のｘ方向の端部から径方向に張り出している。筒体８１におけるｘ方向と逆方向の端部８１２は、ｘ軸と交差する面と平行するように形成されている。筒体８１内には、弾性部材５及びトランスデューサ３の一部が配置される。 The bezel 8 further includes a cylindrical body 81, a flange portion 80, and four support portions 85. The bezel 8 is made of a resin material. The axis of the cylinder 81 is along the x direction. The flange 80 protrudes in the radial direction from the end of the cylindrical body 81 in the x direction. An end 812 of the cylindrical body 81 in the direction opposite to the x direction is formed so as to be parallel to a plane intersecting the x axis. In the cylinder 81, the elastic member 5 and a part of the transducer 3 are arranged.
　鍔部８０の第１面８０１は、ベゼル８が第１バンパー１１０に取り付けられた状態で第１バンパー１１０の第１面１１１（表面）（図６参照）に露出する。鍔部８０におけるｘ方向と逆方向の第２面８０２は、ｘ軸と交差する面と平行している。鍔部８０の第２面８０２は、第１バンパー１１０の第１面１１１に接する。 The first surface 801 of the flange 80 is exposed to the first surface 111 (front surface) (see FIG. 6) of the first bumper 110 in a state where the bezel 8 is attached to the first bumper 110. The second surface 802 in the opposite direction to the x direction in the flange 80 is parallel to the surface intersecting the x axis. The second surface 802 of the flange 80 is in contact with the first surface 111 of the first bumper 110.
　２つの第１腕部８２は、第１バンパー１１０の第１面１１１側から第１バンパー１１０の孔１１３を通って第２面１１２側（裏面）（図６参照）に突き出ている。第１腕部８２は、２つの支持部８２０と、１つの係止部８４と、２つのばね部８４０と、２つの隙間８３と、を有する。２つの支持部８２０は、鍔部８０の第２面８０２からｘ方向の逆方向に突き出ている。２つの支持部８２０は、ｙ方向に並べられている。支持部８２０には、ｚ軸と交差する面と平行する平面８２１が形成されている。平面８２１は、支持部８２０におけるｙ方向の端にそれぞれ設けられている。 The two first arm portions 82 protrude from the first surface 111 side of the first bumper 110 through the hole 113 of the first bumper 110 to the second surface 112 side (back surface) (see FIG. 6). The first arm portion 82 includes two support portions 820, one locking portion 84, two spring portions 840, and two gaps 83. The two support portions 820 protrude from the second surface 802 of the flange portion 80 in the direction opposite to the x direction. The two support portions 820 are arranged in the y direction. The support portion 820 is formed with a plane 821 that is parallel to a plane that intersects the z-axis. The plane 821 is provided at each end in the y direction of the support portion 820.
　支持部８２０の先端から筒体８１の端部８１２の表面までの寸法を「寸法Ｌ２」と呼ぶ。寸法Ｌ２（図６参照）は、第１腕部８２の長さに相当する。寸法Ｌ２は、第２爪部２０の平面２０３から鍔部５１のｙ方向側の表面までの寸法Ｌ１よりも小さい。言いかえると、支持部８２０は、寸法Ｌ２が寸法Ｌ１よりも小さくなるように形成されている。 The dimension from the front end of the support part 820 to the surface of the end part 812 of the cylinder 81 is referred to as “dimension L2”. The dimension L2 (see FIG. 6) corresponds to the length of the first arm portion 82. The dimension L2 is smaller than the dimension L1 from the plane 203 of the 2nd nail | claw part 20 to the surface by the side of the y direction of the collar part 51. FIG. In other words, the support portion 820 is formed such that the dimension L2 is smaller than the dimension L1.
　２つの支持部８２０の間には、係止部８４と、２つの隙間８３と、が設けられている。係止部８４と、隙間８３とは、第１爪部１０が支持部８２０に引っかかるように設けられている。係止部８４は、２つの平面８２１におけるｚ方向と逆方向の端部に配置されている。係止部８４は、２つの支持部８２０と一体に形成されている。係止部８４には、ｘ軸と交差する係止面８４３と、ｚ軸と交差する平面と交差する平面８４２とを有する。係止面８４３には、２つのばね部８４０が設けられている。 Between the two support parts 820, a locking part 84 and two gaps 83 are provided. The locking portion 84 and the gap 83 are provided so that the first claw portion 10 is caught by the support portion 820. The locking portion 84 is disposed at the end of the two planes 821 in the direction opposite to the z direction. The locking portion 84 is formed integrally with the two support portions 820. The locking portion 84 has a locking surface 843 that intersects the x-axis and a plane 842 that intersects the plane that intersects the z-axis. Two spring portions 840 are provided on the locking surface 843.
　２つのばね部８４０は、係止部８４の係止面８４３からｘ方向に突き出ている。２つのばね部８４０の各々の先端部分には、ｚ方向に張り出す押圧部８４１が設けられている。２つの押圧部８４１から鍔部８０の第２面８０２までの寸法は、第１バンパー１１０の厚さよりも小さい。２つの押圧部８４１と鍔部８０とが第１バンパー１１０を挟む。２つの押圧部８４１は、第１バンパー１１０を鍔部８０とで挟んだ際に第１バンパー１１０の孔１１３の縁に接する部位が孔１１３の縁に押し付けられて孔１１３の縁に沿うように変形し、かつ第１バンパー１１０を鍔部８０の第２面８０２に押し付ける。２つの押圧部８４１は、第１バンパー１１０の厚さに応じて変形するので、様々な厚さの第１バンパー１１０に取り付け可能である。２つの押圧部８４１と鍔部８０とが第１バンパー１１０を挟むことにより、ベゼル８が第１バンパー１１０に取り付けられる。２つの押圧部８４１が第１バンパー１１０の孔１１３の縁に固定されることにより、第１腕部８２は、２つの第１腕部８２が互いに離れる方向に撓みにくくなる。また、２つの第１腕部８２の間に超音波センサ１が配置されることにより、第１腕部８２は、２つの第１腕部８２が互いに近づく方向に撓みにくくなる。したがって、第１腕部８２は、超音波センサ１と第１バンパー１１０の孔１１３の縁とに挟まれた状態となる。言いかえると、ベゼル８は、超音波センサ１と第１バンパー１１０の孔１１３の縁とに挟まれた状態で第１バンパー１１０に固定される。 The two spring portions 840 protrude from the locking surface 843 of the locking portion 84 in the x direction. A pressing portion 841 projecting in the z direction is provided at the tip of each of the two spring portions 840. The dimension from the two pressing portions 841 to the second surface 802 of the flange portion 80 is smaller than the thickness of the first bumper 110. The two pressing portions 841 and the flange portion 80 sandwich the first bumper 110. The two pressing portions 841 are arranged such that when the first bumper 110 is sandwiched between the flange portions 80, a portion that is in contact with the edge of the hole 113 of the first bumper 110 is pressed against the edge of the hole 113 so as to follow the edge of the hole 113. The first bumper 110 is pressed against the second surface 802 of the flange 80. Since the two pressing portions 841 are deformed according to the thickness of the first bumper 110, the two pressing portions 841 can be attached to the first bumper 110 having various thicknesses. The bezel 8 is attached to the first bumper 110 by the two pressing portions 841 and the flange 80 sandwiching the first bumper 110. By fixing the two pressing portions 841 to the edge of the hole 113 of the first bumper 110, the first arm portion 82 is difficult to bend in the direction in which the two first arm portions 82 are separated from each other. Further, by arranging the ultrasonic sensor 1 between the two first arm portions 82, the first arm portion 82 is less likely to bend in the direction in which the two first arm portions 82 approach each other. Accordingly, the first arm portion 82 is sandwiched between the ultrasonic sensor 1 and the edge of the hole 113 of the first bumper 110. In other words, the bezel 8 is fixed to the first bumper 110 while being sandwiched between the ultrasonic sensor 1 and the edge of the hole 113 of the first bumper 110.
　ばね部８４０は、支持部８２０がｚ軸に沿う方向に撓んだ際に、支持部８２０を元の位置に戻す復元力を支持部８２０に加えることができる。 The spring portion 840 can apply a restoring force to the support portion 820 to return the support portion 820 to the original position when the support portion 820 is bent in the direction along the z-axis.
　ばね部８４０と支持部８２０との間には隙間８３が設けられている。隙間８３は、ばね部８４０と、支持部８２０と、係止部８４の係止面８４３と、鍔部８０の第２面８０２とで囲まれた空間である。隙間８３のｙ方向の幅は、超音波センサ１における第１爪部１０のｙ方向の幅よりも広い。 A gap 83 is provided between the spring portion 840 and the support portion 820. The gap 83 is a space surrounded by the spring portion 840, the support portion 820, the locking surface 843 of the locking portion 84, and the second surface 802 of the flange portion 80. The width of the gap 83 in the y direction is wider than the width of the first claw portion 10 in the ultrasonic sensor 1 in the y direction.
　支持部８５は、板状に形成されている。支持部８５は、鍔部８０の第２面８０２からｘ方向と逆方向に突き出ている。支持部８５には、第１筒体２１の側面２１０に沿うように湾曲した曲面８５１が設けられている。支持部８５は、鍔部８０と支持部８２０とに一体となるように形成されている。支持部８５は、支持部８２０が鍔部８０に対してｚ方向（及びその逆方向）に力が加えられた際に、支持部８２０の撓み量を制限する。 The support portion 85 is formed in a plate shape. The support portion 85 protrudes from the second surface 802 of the flange portion 80 in the direction opposite to the x direction. The support portion 85 is provided with a curved surface 851 that is curved along the side surface 210 of the first cylinder 21. The support portion 85 is formed so as to be integrated with the flange portion 80 and the support portion 820. The support portion 85 limits the amount of bending of the support portion 820 when the support portion 820 is applied with a force in the z direction (and the opposite direction) to the flange portion 80.
　支持部８２０は、第１バンパー１１０の第１面１１１からｘ方向の逆方向に向けて孔１１３に挿入される。押圧部８４１が孔１１３の縁に接した状態で更に支持部８２０がｘ方向と逆方向に押されることにより、ばね部８４０が筒体８１に近づく方向に撓む。鍔部８０の第２面８０２が第１バンパー１１０に接する位置までばね部８４０が筒体８１の軸に近づく方向に押し込まれると、押圧部８４１が孔１１３を通る。孔１１３を通った押圧部８４１は、ばね部８４０の撓みの復元力によって元の位置に戻り、押圧部８４１が第１バンパー１１０に接して第１バンパー１１０にｘ方向の力を加える。押圧部８４１と鍔部８０とが第１バンパー１１０を挟むことにより、ベゼル８は第１バンパー１１０に取り付けられる。 The support portion 820 is inserted into the hole 113 from the first surface 111 of the first bumper 110 in the direction opposite to the x direction. With the pressing portion 841 in contact with the edge of the hole 113, the support portion 820 is further pressed in the direction opposite to the x direction, so that the spring portion 840 is bent in a direction approaching the cylinder 81. When the spring portion 840 is pushed in a direction approaching the axis of the cylindrical body 81 until the second surface 802 of the flange portion 80 contacts the first bumper 110, the pressing portion 841 passes through the hole 113. The pressing portion 841 that has passed through the hole 113 returns to its original position by the bending restoring force of the spring portion 840, and the pressing portion 841 contacts the first bumper 110 and applies a force in the x direction to the first bumper 110. The bezel 8 is attached to the first bumper 110 by the pressing portion 841 and the flange portion 80 sandwiching the first bumper 110.
　超音波センサ１がベゼル８に取り付けられる構造について説明する。なお、ベゼル８は、第１バンパー１１０（図６参照）に取り付けられているが、図４及び図５では第１バンパー１１０の図示を省略している。 The structure in which the ultrasonic sensor 1 is attached to the bezel 8 will be described. The bezel 8 is attached to the first bumper 110 (see FIG. 6), but the illustration of the first bumper 110 is omitted in FIGS.
　超音波センサ１をベゼル８に取り付ける方法について説明する。作業者は、超音波センサ１のトランスデューサ３と、ベゼル８の筒体８１とが同軸となるように、超音波センサ１をベゼル８の第１腕部８２側に配置する。作業者は、トランスデューサ３及び弾性部材５が筒体８１内に配置されるまで、超音波センサ１をベゼル８に近づける。ベゼル８の係止部８４が超音波センサ１の第１爪部１０のテーパー面１０２に接した状態で第１爪部１０がｘ方向に押し付けられることにより、２つの支持部８２０が互いに離れる方向に撓む。２つの第１爪部１０が隙間８３内に配置されるまで超音波センサ１がベゼル８に近づけられると、ベゼル８の２つの支持部８２０は撓みの復元力によって元の位置に戻り、係止部８４の係止面８４３は、超音波センサ１の４つの第１爪部１０の係止面１０１に接する。この状態で、筒体８１の端部８１２は弾性部材５の鍔部５１をｘ方向の逆方向に押し付けて鍔部５１を弾性変形させている。そのためハウジング２は、ベゼル８の係止部８４と、筒体８１とによってｘ方向の移動が規制された状態となっている。 A method for attaching the ultrasonic sensor 1 to the bezel 8 will be described. The operator places the ultrasonic sensor 1 on the first arm portion 82 side of the bezel 8 so that the transducer 3 of the ultrasonic sensor 1 and the cylindrical body 81 of the bezel 8 are coaxial. The operator brings the ultrasonic sensor 1 close to the bezel 8 until the transducer 3 and the elastic member 5 are arranged in the cylinder 81. A direction in which the two support portions 820 are separated from each other when the first claw portion 10 is pressed in the x direction in a state where the locking portion 84 of the bezel 8 is in contact with the tapered surface 102 of the first claw portion 10 of the ultrasonic sensor 1. Bend. When the ultrasonic sensor 1 is brought close to the bezel 8 until the two first claws 10 are arranged in the gap 83, the two support portions 820 of the bezel 8 are returned to their original positions by the restoring force of the bending, and are locked. The locking surface 843 of the portion 84 is in contact with the locking surfaces 101 of the four first claw portions 10 of the ultrasonic sensor 1. In this state, the end portion 812 of the cylinder 81 presses the flange portion 51 of the elastic member 5 in the direction opposite to the x direction to elastically deform the flange portion 51. Therefore, the housing 2 is in a state where movement in the x direction is restricted by the locking portion 84 of the bezel 8 and the cylinder 81.
　ベゼル８の４つの平面８２１はそれぞれ、筒体８１内に弾性部材５及びトランスデューサ３の一部が配置された状態で、４つの張出部２１２の平面２１３に接する。２つの係止部８４の平面８４２はそれぞれ、２つの平面１０３に接する。そのため超音波センサ１のハウジング２は、ベゼル８の支持部８２０における４つの平面８２１及び２つの係止部８４によって、ｚ方向の移動が規制された状態となる。したがって、超音波センサ１はベゼル８に取り付けられた状態となる。 The four flat surfaces 821 of the bezel 8 are in contact with the flat surfaces 213 of the four overhanging portions 212 in a state where the elastic member 5 and a part of the transducer 3 are disposed in the cylinder 81, respectively. The flat surfaces 842 of the two locking portions 84 are in contact with the two flat surfaces 103, respectively. Therefore, the housing 2 of the ultrasonic sensor 1 is in a state where movement in the z direction is restricted by the four flat surfaces 821 and the two locking portions 84 in the support portion 820 of the bezel 8. Accordingly, the ultrasonic sensor 1 is attached to the bezel 8.
　超音波センサ１がベゼル８に取り付けられた状態で、ベゼル８の４つの支持部８５の各々には、筒体８１内に超音波センサ１の弾性部材５及びトランスデューサ３の一部（先端部分）が配置される。その状態で、超音波センサ１におけるハウジング２の第１筒体２１の側面２１０に接する。つまりベゼル８の４つの支持部８５は超音波センサ１におけるハウジング２の第１筒体２１を支持する。そのためハウジング２は、４つの支持部８５によってｚ方向の移動及びｙ方向の移動が規制された状態となっている。 In a state where the ultrasonic sensor 1 is attached to the bezel 8, each of the four support portions 85 of the bezel 8 includes a part (tip portion) of the elastic member 5 of the ultrasonic sensor 1 and the transducer 3 in the cylindrical body 81. Is placed. In this state, the ultrasonic sensor 1 contacts the side surface 210 of the first cylinder 21 of the housing 2. That is, the four support portions 85 of the bezel 8 support the first cylinder 21 of the housing 2 in the ultrasonic sensor 1. Therefore, the housing 2 is in a state where movement in the z direction and movement in the y direction are restricted by the four support portions 85.
　ベゼル８における支持部８２０の先端から筒体８１の端部８１２の表面までの寸法Ｌ２は、図６に示すように、超音波センサ１における第２爪部２０の平面２０３から弾性部材５の鍔部５１のｘ方向側の表面までの寸法Ｌ１よりも小さい。そのため、超音波センサ１がベゼル８に取り付けられた状態で、超音波センサ１における第２爪部２０とベゼル８における支持部８２０との間に隙間ができるようになっている。このため、ベゼル８における支持部８２０が超音波センサ１における第２爪部２０に干渉しにくくなっている。 As shown in FIG. 6, the dimension L2 from the front end of the support portion 820 to the surface of the end portion 812 of the cylindrical body 81 in the bezel 8 is from the flat surface 203 of the second claw portion 20 in the ultrasonic sensor 1. It is smaller than the dimension L1 to the surface of the part 51 on the x direction side. Therefore, a gap is formed between the second claw portion 20 of the ultrasonic sensor 1 and the support portion 820 of the bezel 8 with the ultrasonic sensor 1 attached to the bezel 8. For this reason, the support part 820 in the bezel 8 is less likely to interfere with the second claw part 20 in the ultrasonic sensor 1.
　次に、超音波センサ１が取り付けられる保持部材９について、図７、図８及び図９を参照して説明する。 Next, the holding member 9 to which the ultrasonic sensor 1 is attached will be described with reference to FIG. 7, FIG. 8, and FIG.
　保持部材９は、例えば車両の第２バンパー１２０（図９参照）に取り付けられる。第２バンパー１２０には、第２バンパー１２０をｘ方向に貫く孔１２３が設けられている。孔１２３の径は、弾性部材５の側面５２の外径とほぼ等しい。 The holding member 9 is attached to the second bumper 120 (see FIG. 9) of the vehicle, for example. The second bumper 120 is provided with a hole 123 that penetrates the second bumper 120 in the x direction. The diameter of the hole 123 is substantially equal to the outer diameter of the side surface 52 of the elastic member 5.
　保持部材９は、２つの第２腕部９４を有する。２つの第２腕部９４は、第２バンパー１２０の第２面１２２（裏面）（図９参照）に取り付けられて第２バンパー１２０の第２面１２２から第２バンパー１２０の厚さ方向に突き出る。超音波センサ１は、２つの第２腕部９４に挟まれることにより、保持部材９に取り付けられる。以下、保持部材９について説明する。 The holding member 9 has two second arm portions 94. The two second arm portions 94 are attached to the second surface 122 (back surface) (see FIG. 9) of the second bumper 120 and protrude from the second surface 122 of the second bumper 120 in the thickness direction of the second bumper 120. . The ultrasonic sensor 1 is attached to the holding member 9 by being sandwiched between the two second arm portions 94. Hereinafter, the holding member 9 will be described.
　保持部材９は、ベース９１と、４つの支持部９２と、２つの第２腕部９４と、を有する。保持部材９は、樹脂材料で形成されている。ベース９１は、例えば厚さ方向がｘ方向となる平板状に形成されている。ベース９１におけるｘ方向側の第１面９０１には、例えば両面テープが張りつけられる。ベース９１は、両面テープによって第２バンパー１２０の第２面１２２に取り付けられる。保持部材９における２つの第２腕部９４はそれぞれ、超音波センサ１における２つの第２爪部２０に引っかかる。４つの支持部９２は、超音波センサ１における第２筒体２２の側面２２１に接する。２つの第２爪部２０及び４つの支持部９２によって、超音波センサ１は、保持部材９に取り付けられる。超音波センサ１におけるトランスデューサ３の振動面３１は、第２バンパー１２０の孔１２３を通って第２バンパー１２０の第１面１２１（表面）から露出する。 The holding member 9 has a base 91, four support portions 92, and two second arm portions 94. The holding member 9 is made of a resin material. The base 91 is formed in a flat plate shape whose thickness direction is the x direction, for example. For example, a double-sided tape is attached to the first surface 901 of the base 91 on the x direction side. The base 91 is attached to the second surface 122 of the second bumper 120 with a double-sided tape. The two second arm portions 94 in the holding member 9 are respectively caught by the two second claw portions 20 in the ultrasonic sensor 1. The four support portions 92 are in contact with the side surface 221 of the second cylinder 22 in the ultrasonic sensor 1. The ultrasonic sensor 1 is attached to the holding member 9 by the two second claw portions 20 and the four support portions 92. The vibration surface 31 of the transducer 3 in the ultrasonic sensor 1 is exposed from the first surface 121 (surface) of the second bumper 120 through the hole 123 of the second bumper 120.
　ベース９１におけるｘ方向と反対側の第２面９０２には、２つの第２腕部９４と、４つの支持部９２と、４つのリブ９５と、円形の凹部９１２と、が設けられている。４つのリブ９５は、超音波センサ１における第１筒体２１の４つの張出部２１２に接する。 On the second surface 902 of the base 91 opposite to the x direction, two second arm portions 94, four support portions 92, four ribs 95, and a circular recess 912 are provided. The four ribs 95 are in contact with the four overhanging portions 212 of the first cylinder 21 in the ultrasonic sensor 1.
　凹部９１２は、ベース９１の第２面９０２側から窪むように形成されている。凹部９１２の内径は、ｘ方向から見て第１筒体２１の外径より大きい。凹部９１２は、一例として、ベース９１の厚さを減らすことにより形成されている。凹部９１２には、凹部９１２と同軸であって凹部９１２の内径よりも直径の小さい孔９１１が設けられている。孔９１１は、ベース９１をｘ方向に貫通している。したがって、凹部９１２には、ベース９１の厚さよりも薄い鍔部９１３が形成されている。鍔部９１３のｘ方向と反対側の面は、ｘ軸と交差する平面となっている。鍔部９１３の孔９１１の直径は、超音波センサ１における弾性部材５の側面５２の外径より大きい。 The recess 912 is formed so as to be recessed from the second surface 902 side of the base 91. The inner diameter of the recess 912 is larger than the outer diameter of the first cylinder 21 when viewed from the x direction. As an example, the concave portion 912 is formed by reducing the thickness of the base 91. The recess 912 is provided with a hole 911 that is coaxial with the recess 912 and has a diameter smaller than the inner diameter of the recess 912. The hole 911 passes through the base 91 in the x direction. Therefore, a flange 913 that is thinner than the thickness of the base 91 is formed in the recess 912. The surface of the flange portion 913 opposite to the x direction is a plane that intersects the x axis. The diameter of the hole 911 of the flange 913 is larger than the outer diameter of the side surface 52 of the elastic member 5 in the ultrasonic sensor 1.
　凹部９１２の周囲には、保持部材９の第２面９０２からｘ方向と逆方向に張り出した２つの補強部９０３が設けられている。補強部９０３のｘ方向の寸法（厚さ）は、ベース９１の厚さよりも大きい。２つの補強部９０３はそれぞれ、ｚ方向に並ぶように凹部９１２の周囲の両側に設けられている。２つの補強部９０３における各々の表面には、２の支持部９２と、２つのリブ９５と、１つの第２腕部９４と、が設けられている。補強部９０３は、ベース９１における孔９１１の周囲の部位を撓みにくくしている。 Around the concave portion 912, two reinforcing portions 903 projecting from the second surface 902 of the holding member 9 in the direction opposite to the x direction are provided. The dimension (thickness) in the x direction of the reinforcing portion 903 is larger than the thickness of the base 91. The two reinforcing portions 903 are respectively provided on both sides around the recess 912 so as to be aligned in the z direction. Two support portions 92, two ribs 95, and one second arm portion 94 are provided on each surface of the two reinforcing portions 903. The reinforcing portion 903 makes the portion around the hole 911 in the base 91 difficult to bend.
　４つの支持部９２は、保持部材９の第２面９０２からｘ方向と逆方向に突き出ている。４つの支持部９２は、凹部９１２の周囲に配置されている。４つのうち２つの支持部９２は、凹部９１２の軸よりもｚ方向側の凹部９１２の周囲であって、かつｙ方向に並んで配置されている。４つのうち他の２つの支持部９２は、凹部９１２の軸よりもｚ方向と反対側の凹部９１２の周囲であって、かつｙ方向に並んで配置されている。 The four support portions 92 protrude from the second surface 902 of the holding member 9 in the direction opposite to the x direction. The four support portions 92 are arranged around the recess 912. Two of the four support portions 92 are arranged around the recess 912 on the z direction side of the axis of the recess 912 and aligned in the y direction. The other two support portions 92 out of the four support portions 92 are arranged around the recess 912 opposite to the z direction from the axis of the recess 912 and aligned in the y direction.
　支持部９２には、曲面９２１と、溝９２２と、リブ９５と、リブ９０４と、が設けられている。リブ９５は、支持部９２と補強部９０３との間に設けられている。リブ９５は、凹部９１２及び支持部９２と一体に形成されている。リブ９５は、曲面９５２と、平面９５１とを有する。曲面９５２は、超音波センサ１における張出部２１２の表面に沿う曲面であり、凹部９１２の内側面と連続する同一な曲面である。平面９５１は、ｘ軸と交差する平面である。平面９５１は、リブ９５において支持部９２と接する部位に形成されている。 The support portion 92 is provided with a curved surface 921, a groove 922, a rib 95, and a rib 904. The rib 95 is provided between the support portion 92 and the reinforcement portion 903. The rib 95 is formed integrally with the concave portion 912 and the support portion 92. The rib 95 has a curved surface 952 and a flat surface 951. The curved surface 952 is a curved surface along the surface of the protruding portion 212 in the ultrasonic sensor 1, and is the same curved surface that is continuous with the inner surface of the recess 912. The plane 951 is a plane that intersects the x-axis. The flat surface 951 is formed at a portion in contact with the support portion 92 in the rib 95.
　リブ９０４は、支持部９２におけるｚ軸と交差する面から、ｚ方向に沿って孔９１１の軸から遠ざかる方向に張り出ている。リブ９０４は、支持部９２と補強部９０３とに一体に形成されている。リブ９０４は、支持部９２が孔９１１の軸から遠ざかる方向に撓んだ際の支持部９２の撓み量を制限する。 The rib 904 protrudes from the surface intersecting the z axis of the support portion 92 in a direction away from the axis of the hole 911 along the z direction. The rib 904 is formed integrally with the support portion 92 and the reinforcement portion 903. The rib 904 limits the amount of bending of the support portion 92 when the support portion 92 is bent in a direction away from the axis of the hole 911.
　溝９２２は、支持部９２において凹部９１２の軸と反対側の面のうち凹部９１２の軸に近い部位に設けられる。溝９２２は、支持部９２における支持部９２のｙ方向の寸法及びｚ方向の寸法を小さくするために設けられている。溝９２２は、支持部９２におけるｘ方向のほぼ中央から支持部９２の先端まで達するように設けられている。より詳細には、溝９２２は、平面９２４と、平面９２３とを有する。平面９２４は、ｘ軸と交差する平面である。平面９２３は、ｚ軸と交差する平面である。 The groove 922 is provided in a portion of the support portion 92 that is close to the axis of the recess 912 in the surface opposite to the axis of the recess 912. The groove 922 is provided to reduce the dimension in the y direction and the dimension in the z direction of the support portion 92 in the support portion 92. The groove 922 is provided so as to reach from the substantially center of the support portion 92 in the x direction to the tip of the support portion 92. More specifically, the groove 922 has a plane 924 and a plane 923. The plane 924 is a plane that intersects the x-axis. The plane 923 is a plane that intersects the z-axis.
　曲面９２１は、支持部９２において、溝９２２が設けられた面と反対側の面に形成される。曲面９２１は、第２筒体２２の側面２２１に沿う曲面である。 The curved surface 921 is formed on the surface of the support portion 92 opposite to the surface on which the groove 922 is provided. The curved surface 921 is a curved surface along the side surface 221 of the second cylindrical body 22.
　第２腕部９４は、ｙ方向に並ぶ２つの支持部９２の間に設けられている。第２腕部９４は、長方形の平板状に形成されている。第２腕部９４は、厚さ方向がｚ方向であって、補強部９０３からｘ方向と逆方向に突き出るように配置されている。第２腕部９４のｙ方向の寸法は、超音波センサ１においてｙ方向に並ぶ２つの第２爪部２０の間隔よりも大きい。 The second arm portion 94 is provided between two support portions 92 arranged in the y direction. The second arm portion 94 is formed in a rectangular flat plate shape. The second arm portion 94 is disposed so that the thickness direction is the z direction and protrudes from the reinforcing portion 903 in the direction opposite to the x direction. The dimension of the second arm portion 94 in the y direction is larger than the interval between the two second claws 20 arranged in the y direction in the ultrasonic sensor 1.
　第２腕部９４には、第２腕部９４をｚ方向に貫く孔９３が設けられている。孔９３は、ｚ方向から見て長方形状に形成されている。孔９３の内側面のうち第２腕部９４の先端に近い係止面９３１は、ｘ軸と交差する面となっている。孔９３のｙ方向の寸法（係止面９３１のｙ方向の寸法）は、第２爪部２０のｙ方向の寸法より大きい。孔９３のｘ方向の寸法は、超音波センサ１における第２爪部２０のｘ方向の寸法より大きい。第２腕部９４の係止面９３１から鍔部９１３のｘ方向と反対側の表面までの寸法は、弾性部材５の鍔部５１のｘ方向の表面から超音波センサ１における第２爪部２０の係止面２０１までの寸法とほぼ等しい。 The second arm portion 94 is provided with a hole 93 that penetrates the second arm portion 94 in the z direction. The hole 93 is formed in a rectangular shape when viewed from the z direction. Of the inner surface of the hole 93, the locking surface 931 near the tip of the second arm portion 94 is a surface that intersects the x-axis. The dimension of the hole 93 in the y direction (the dimension of the locking surface 931 in the y direction) is larger than the dimension of the second claw portion 20 in the y direction. The dimension in the x direction of the hole 93 is larger than the dimension in the x direction of the second claw portion 20 in the ultrasonic sensor 1. The dimension from the locking surface 931 of the second arm portion 94 to the surface on the opposite side to the x direction of the flange portion 913 is from the surface in the x direction of the flange portion 51 of the elastic member 5 to the second claw portion 20 in the ultrasonic sensor 1. Is substantially equal to the dimension up to the locking surface 201.
　第２腕部９４における孔９１１の軸に近い側の平面９４１は、ｚ軸と交差する平面となっている。孔９１１の軸から第２腕部９４の平面９４１までの寸法は、補強部９０３における凹部９１２の半径よりも大きい。より詳細には、ベース９１の孔９１１の軸から平面９４１までの寸法は、超音波センサ１におけるハウジング２の第１筒体２１の軸から第１爪部１０の平面１０４（第１爪部１０におけるｚ方向の先端）までの寸法よりも大きい。 The plane 941 on the side close to the axis of the hole 911 in the second arm portion 94 is a plane that intersects the z-axis. The dimension from the axis of the hole 911 to the flat surface 941 of the second arm portion 94 is larger than the radius of the concave portion 912 in the reinforcing portion 903. More specifically, the dimension from the axis of the hole 911 of the base 91 to the plane 941 is determined from the axis of the first cylinder 21 of the housing 2 in the ultrasonic sensor 1 to the plane 104 of the first claw part 10 (first claw part 10 Larger than the dimension up to the tip in the z direction).
　第２腕部９４の平面９４１と補強部９０３との間には、テーパー面９４２が形成されている。テーパー面９４２は、第２腕部９４の厚さが補強部９０３に近づくにつれて厚くなるように形成されている。テーパー面９４２は、超音波センサ１が保持部材９に保持された状態で第１爪部１０に接しないよう形成されている（図９参照）。テーパー面９４２は、例えば、超音波センサ１が保持部材９に保持された状態で第１爪部１０の平面１０４とｚ方向に重ならないように形成される。第２腕部９４にテーパー面９４２が形成されることにより、第２腕部９４における孔９３が設けられた部位の厚さよりも補強部９０３側の厚さを厚くすることができる。 A tapered surface 942 is formed between the flat surface 941 of the second arm portion 94 and the reinforcing portion 903. The tapered surface 942 is formed so that the thickness of the second arm portion 94 becomes thicker as it approaches the reinforcing portion 903. The tapered surface 942 is formed so as not to contact the first claw portion 10 in a state where the ultrasonic sensor 1 is held by the holding member 9 (see FIG. 9). The tapered surface 942 is formed, for example, so as not to overlap the flat surface 104 of the first claw portion 10 in the z direction in a state where the ultrasonic sensor 1 is held by the holding member 9. By forming the tapered surface 942 on the second arm portion 94, the thickness on the reinforcing portion 903 side can be made thicker than the thickness of the portion of the second arm portion 94 where the hole 93 is provided.
　第２腕部９４における孔９３のｙ方向の両側にはそれぞれ、テーパー面９４３が形成されている。２つのテーパー面９４３は、平面９４１と、第２腕部９４におけるｙ方向の両側面との間の傾斜面である。テーパー面９４３は、第２腕部９４の厚さが孔９３から離れるにつれて小さくなるように形成されている。２つのテーパー面９４３の各々は、超音波センサ１におけるガイド部４の２つのテーパー面４０４と平行する平面である。 Tapered surfaces 943 are formed on both sides of the hole 93 in the second arm portion 94 in the y direction. The two tapered surfaces 943 are inclined surfaces between the flat surface 941 and both side surfaces of the second arm portion 94 in the y direction. The tapered surface 943 is formed so that the thickness of the second arm portion 94 decreases as the distance from the hole 93 increases. Each of the two tapered surfaces 943 is a plane parallel to the two tapered surfaces 404 of the guide portion 4 in the ultrasonic sensor 1.
　超音波センサ１が保持部材９に取り付けられる構造について説明する。なお、保持部材９は、第２バンパー１２０（図９参照）に取り付けられているが、図７及び図８では第２バンパー１２０の図示を省略している。 The structure in which the ultrasonic sensor 1 is attached to the holding member 9 will be described. The holding member 9 is attached to the second bumper 120 (see FIG. 9), but the second bumper 120 is not shown in FIGS.
　作業者は、超音波センサ１のトランスデューサ３の軸と、保持部材９の凹部９１２の軸とが揃う状態で、超音波センサ１を保持部材９に近づける。作業者は、トランスデューサ３及び弾性部材５の鍔部５１が凹部９１２内に配置されるまで、超音波センサ１を保持部材９に近づける。保持部材９における第２腕部９４が超音波センサ１における第２爪部２０のテーパー面２０２に接した状態で超音波センサ１における第２爪部２０がｘ方向に押し付けられることにより、保持部材９における２つの第２腕部９４が互いに離れる方向に撓む。超音波センサ１における２つの第２爪部２０の各々が第２腕部９４の孔９３内に配置されるまで超音波センサ１が保持部材９に近づけられると、保持部材９における２つの第２腕部９４は撓みの反発力によって元の位置に戻る。そして第２腕部９４の孔９３の係止面９３１は、超音波センサ１における第２爪部２０の係止面２０１に接する。保持部材９における第２腕部９４のｙ方向の両端にはそれぞれテーパー面９４３が設けられていることにより、保持部材９の第２腕部９４のｙ方向の両端と超音波センサ１におけるガイド部４との間に隙間ができる。したがって、保持部材９における第２腕部９４のｙ方向の両端が超音波センサ１におけるガイド部４に接触（干渉）しにくくなっている。また、保持部材９における２つの第２腕部９４におけるそれぞれの平面９４１の間の寸法は、ｚ方向に並ぶ超音波センサ１の２つの第１爪部１０の平面１０４の間の寸法よりも大きい。そのため、超音波センサ１における２つの第２爪部２０の各々が保持部材９における孔９３内に配置された状態で、ｙ方向に並ぶ２つの第１爪部１０と第２腕部９４との間に隙間ができる。したがって、超音波センサ１における４つの第１爪部１０が保持部材９における２つの第２腕部９４に接触（干渉）しにくくなっている。 The operator brings the ultrasonic sensor 1 close to the holding member 9 in a state where the axis of the transducer 3 of the ultrasonic sensor 1 and the axis of the recess 912 of the holding member 9 are aligned. The operator brings the ultrasonic sensor 1 close to the holding member 9 until the flange 3 of the transducer 3 and the elastic member 5 is disposed in the recess 912. The second claw portion 20 of the ultrasonic sensor 1 is pressed in the x direction in a state where the second arm portion 94 of the holding member 9 is in contact with the tapered surface 202 of the second claw portion 20 of the ultrasonic sensor 1. 9 bend in a direction away from each other. When the ultrasonic sensor 1 is brought close to the holding member 9 until each of the two second claws 20 in the ultrasonic sensor 1 is disposed in the hole 93 of the second arm portion 94, the two second The arm part 94 returns to the original position by the repulsive force of bending. The locking surface 931 of the hole 93 of the second arm portion 94 is in contact with the locking surface 201 of the second claw portion 20 in the ultrasonic sensor 1. Tapered surfaces 943 are provided at both ends in the y direction of the second arm portion 94 in the holding member 9, so that both ends in the y direction of the second arm portion 94 of the holding member 9 and the guide portion in the ultrasonic sensor 1 are provided. There is a gap between Therefore, both ends in the y direction of the second arm portion 94 of the holding member 9 are less likely to contact (interfere) with the guide portion 4 of the ultrasonic sensor 1. In addition, the dimension between the planes 941 of the two second arm portions 94 in the holding member 9 is larger than the dimension between the planes 104 of the two first claw portions 10 of the ultrasonic sensors 1 arranged in the z direction. . Therefore, in the state where each of the two second claws 20 in the ultrasonic sensor 1 is disposed in the hole 93 in the holding member 9, the two first claws 10 and the second arms 94 arranged in the y direction are arranged. There is a gap between them. Therefore, the four first claw portions 10 in the ultrasonic sensor 1 are unlikely to contact (interfere) with the two second arm portions 94 in the holding member 9.
　超音波センサ１における２つの第２爪部２０の各々が保持部材９における孔９３内に配置された状態で、４つのガイド部４はそれぞれ、保持部材９における４つの支持部９２の溝９２２内に配置される。超音波センサ１におけるガイド部４の張出部４０２は、第２腕部９４の溝９２２の平面９２３と、平面９２４とに接する。超音波センサ１におけるガイド部４の張出部４０２が平面９２４に接することにより、超音波センサ１のハウジング２のｘ方向への移動が抑制されている。また、超音波センサ１におけるガイド部４の凹部４０３内に保持部材９における支持部９２の一部（溝９２２と曲面９２１との間の部位）が入り込む。そのため、第２腕部９４の４つの支持部９２は、超音波センサ１における第２筒体２２の側面２２１において底板６４に近い部位まで接することができる。第２腕部９４の４つの支持部９２と超音波センサ１における第２筒体２２の側面２２１とが接する面積が大きいほど、超音波センサ１におけるハウジング２が４つの保持部材９の支持部９２に対して位置ずれを起こしにくくなる。また、超音波センサ１におけるガイド部４の凹部４０３内に支持部９２の一部（溝９２２と曲面９２１との間の部位）が入り込むことにより、保持部材９の支持部９２が超音波センサ１の第２筒体２２の側面２２１からｚ方向に沿って離れる方向に撓みにくくなる。 In a state where each of the two second claw portions 20 in the ultrasonic sensor 1 is disposed in the hole 93 in the holding member 9, the four guide portions 4 are respectively in the grooves 922 of the four support portions 92 in the holding member 9. Placed in. The overhanging portion 402 of the guide portion 4 in the ultrasonic sensor 1 is in contact with the flat surface 923 and the flat surface 924 of the groove 922 of the second arm portion 94. When the protruding portion 402 of the guide portion 4 in the ultrasonic sensor 1 is in contact with the flat surface 924, the movement of the housing 2 of the ultrasonic sensor 1 in the x direction is suppressed. Further, a part of the support portion 92 of the holding member 9 (a portion between the groove 922 and the curved surface 921) enters the recess 403 of the guide portion 4 in the ultrasonic sensor 1. Therefore, the four support portions 92 of the second arm portion 94 can come into contact with a portion close to the bottom plate 64 on the side surface 221 of the second cylindrical body 22 in the ultrasonic sensor 1. As the area where the four support portions 92 of the second arm portion 94 and the side surface 221 of the second cylinder 22 in the ultrasonic sensor 1 are in contact with each other is larger, the housing 2 in the ultrasonic sensor 1 is supported by the support portions 92 of the four holding members 9. This makes it difficult to cause a position shift. In addition, when a part of the support portion 92 (a portion between the groove 922 and the curved surface 921) enters the recess 403 of the guide portion 4 in the ultrasonic sensor 1, the support portion 92 of the holding member 9 is moved to the ultrasonic sensor 1. It becomes difficult to bend in the direction away from the side surface 221 of the second cylinder 22 along the z direction.
　超音波センサ１における２つの第２爪部２０の各々が保持部材９の孔９３内に配置された状態で、保持部材９における凹部９１２の鍔部９１３は超音波センサ１の弾性部材５の鍔部５１をｘ方向の逆方向に押し付けて鍔部５１を弾性変形させている。そのため超音波センサ１におけるハウジング２は、保持部材９における第２腕部９４と、溝９２２の平面９２４と、鍔部９１３とによってｘ方向の移動が規制された状態となっている。 In the state where each of the two second claws 20 in the ultrasonic sensor 1 is disposed in the hole 93 of the holding member 9, the flange 913 of the recess 912 in the holding member 9 is the flange of the elastic member 5 of the ultrasonic sensor 1. The flange portion 51 is elastically deformed by pressing the portion 51 in the direction opposite to the x direction. Therefore, the housing 2 of the ultrasonic sensor 1 is in a state where movement in the x direction is restricted by the second arm portion 94 of the holding member 9, the flat surface 924 of the groove 922, and the flange portion 913.
　超音波センサ１における２つの第２爪部２０が保持部材９における孔９３内に配置された状態で、保持部材９における凹部９１２の内側面は、超音波センサ１における弾性部材５の鍔部５１の縁とカバー６１の縁とに接している。超音波センサ１における２つの第２爪部２０が保持部材９における孔９３内に配置された状態で、保持部材９における４つのリブ９５の曲面９５２の各々は、超音波センサ１における第１筒体２１の側面２１０に接する。超音波センサ１における２つの第２爪部２０が保持部材９における孔９３内に配置された状態で、保持部材９における４つの支持部９２の曲面９２１の各々は、超音波センサ１における第２筒体２２の側面２２１に接する。そのため超音波センサ１にけるハウジング２は、保持部材９における凹部９１２と、４つのリブ９５と、４つの支持部９２とによってｚ方向の移動及びｙ方向の移動が規制された状態となっている。したがって、超音波センサ１は保持部材９に対して移動が規制された状態で、保持部材９に取り付けられる。 In a state where the two second claws 20 in the ultrasonic sensor 1 are disposed in the hole 93 in the holding member 9, the inner surface of the recess 912 in the holding member 9 is the flange 51 of the elastic member 5 in the ultrasonic sensor 1. And the edge of the cover 61 are in contact with each other. Each of the curved surfaces 952 of the four ribs 95 in the holding member 9 is in a state where the two second claw portions 20 in the ultrasonic sensor 1 are disposed in the holes 93 in the holding member 9. It contacts the side surface 210 of the body 21. Each of the curved surfaces 921 of the four support portions 92 in the holding member 9 is in a state where the two second claw portions 20 in the ultrasonic sensor 1 are disposed in the holes 93 in the holding member 9. It contacts the side surface 221 of the cylindrical body 22. Therefore, the housing 2 in the ultrasonic sensor 1 is in a state in which the movement in the z direction and the movement in the y direction are restricted by the recess 912 in the holding member 9, the four ribs 95, and the four support portions 92. . Therefore, the ultrasonic sensor 1 is attached to the holding member 9 in a state in which movement with respect to the holding member 9 is restricted.
　以上説明したように、超音波センサ１は、ハウジング２と、第１爪部１０と、第２爪部２０と、トランスデューサ３と、を備える。第１爪部１０は、ベゼル８（第１取付部材）の第１腕部８２に引っかけることが可能である。ベゼル８は、第１バンパー１１０の第１面１１１（表面）に取り付けられる。第２爪部２０は、保持部材９（第２取付部材）の第２腕部９４に引っかけることが可能である。保持部材９は、第２バンパー１２０の第２面１２２（裏面）に取り付けられる。 As described above, the ultrasonic sensor 1 includes the housing 2, the first claw portion 10, the second claw portion 20, and the transducer 3. The 1st nail | claw part 10 can be hooked on the 1st arm part 82 of the bezel 8 (1st attachment member). The bezel 8 is attached to the first surface 111 (front surface) of the first bumper 110. The 2nd nail | claw part 20 can be hooked on the 2nd arm part 94 of the holding member 9 (2nd attachment member). The holding member 9 is attached to the second surface 122 (back surface) of the second bumper 120.
　第１爪部１０は、第１バンパー１１０の第１面１１１（表面）に取り付けられたベゼル８（第１取付部材）において第１面１１１から孔１１３を通って第２面１１２（裏面）に突出する第１腕部８２に引っかけることが可能である。第２爪部２０は、第２バンパー１２０の第２面１２２（裏面）に取り付けられた保持部材９（第２取付部材）の第２腕部９４に引っかけることが可能である。超音波センサ１は、第１爪部１０と、第２爪部２０とを備えているので、第１バンパー１１０を貫通するベゼル８と、第２バンパー１２０を貫通しない保持部材９との両方に取り付け可能である。 The first claw portion 10 is formed on the second surface 112 (back surface) from the first surface 111 through the hole 113 in the bezel 8 (first mounting member) attached to the first surface 111 (front surface) of the first bumper 110. It is possible to hook on the protruding first arm portion 82. The 2nd nail | claw part 20 can be hooked on the 2nd arm part 94 of the holding member 9 (2nd attachment member) attached to the 2nd surface 122 (back surface) of the 2nd bumper 120. FIG. Since the ultrasonic sensor 1 includes the first claw portion 10 and the second claw portion 20, both the bezel 8 that penetrates the first bumper 110 and the holding member 9 that does not penetrate the second bumper 120. It can be attached.
　超音波センサ１において、第１爪部１０と第２爪部２０とは離れていることが好ましい。第２爪部２０は、第１爪部１０が第１腕部８２に引っかかった状態で第１腕部８２との間に隙間ができるように設けられていることが好ましい。これにより、超音波センサ１がベゼル８（第１取付部材）に取り付けられた状態で第２爪部２０が第１腕部８２に接触（干渉）しにくくなっている。 In the ultrasonic sensor 1, it is preferable that the 1st nail | claw part 10 and the 2nd nail | claw part 20 are separated. The second claw portion 20 is preferably provided such that a gap is formed between the second claw portion 20 and the first arm portion 82 in a state where the first claw portion 10 is caught by the first arm portion 82. Accordingly, the second claw portion 20 is unlikely to contact (interfere) with the first arm portion 82 in a state where the ultrasonic sensor 1 is attached to the bezel 8 (first attachment member).
　超音波センサ１において、第１爪部１０と第２爪部２０とは離れていることが好ましい。第１爪部１０は、第２爪部２０が第２腕部９４に引っかかった状態で第２腕部９４との間に隙間ができるように設けられていることが好ましい。これにより、超音波センサ１が保持部材９（第２取付部材）に取り付けられた状態で第１爪部１０が第２腕部９４に接触（干渉）しにくくなっている。 In the ultrasonic sensor 1, it is preferable that the 1st nail | claw part 10 and the 2nd nail | claw part 20 are separated. The first claw portion 10 is preferably provided such that a gap is formed between the first claw portion 10 and the second arm portion 94 in a state where the second claw portion 20 is caught by the second arm portion 94. This makes it difficult for the first claw portion 10 to contact (interfere) with the second arm portion 94 in a state where the ultrasonic sensor 1 is attached to the holding member 9 (second attachment member).
　超音波センサ１において、筒部２００は、トランスデューサ３の超音波の送受波面（振動面３１）を露出させる開口部２３１を有し、第１爪部１０は、第２爪部２０よりも開口部２３１に近い位置に設けられることが好ましい。これにより、超音波センサ１は、第２腕部９４よりも突き出し寸法が小さい第１腕部８２に第１爪部１０を引っ掛けて取り付け可能となる。 In the ultrasonic sensor 1, the cylindrical portion 200 has an opening 231 that exposes the ultrasonic wave transmission / reception surface (vibration surface 31) of the transducer 3, and the first claw portion 10 is more open than the second claw portion 20. It is preferable to be provided at a position close to H.231. As a result, the ultrasonic sensor 1 can be attached by hooking the first claw portion 10 on the first arm portion 82 having a protruding size smaller than that of the second arm portion 94.
　超音波センサ１において、筒部２００は、第1筒体２１と制御部７が収納される第２筒体２２とを含み、第1筒体２１の外径よりも、第２筒体２２の外径が大きくなっていることが好ましい。これにより、筒部２００の内部空間の体積を大きくすることが可能となる。例えば、制御部７の大きさがトランスデューサ３よりも大きい場合でも、制御部７を筒部２００内に収納することができる。そのため、ｘ方向から見た制御部７の大きさよりも小さいトランスデューサ３を備える超音波センサ１を実現することができる。また、トランスデューサ３を小さくすることにより、第１バンパー１１０及び第２バンパー１２０から露出するトランスデューサ３の振動面３１を小さくすることができる。 In the ultrasonic sensor 1, the cylindrical portion 200 includes a first cylindrical body 21 and a second cylindrical body 22 in which the control unit 7 is accommodated, and the second cylindrical body 22 has a larger diameter than the outer diameter of the first cylindrical body 21. It is preferable that the outer diameter is large. Thereby, the volume of the internal space of the cylinder part 200 can be increased. For example, even when the size of the control unit 7 is larger than that of the transducer 3, the control unit 7 can be accommodated in the cylindrical unit 200. Therefore, the ultrasonic sensor 1 including the transducer 3 smaller than the size of the control unit 7 viewed from the x direction can be realized. Further, by reducing the size of the transducer 3, the vibration surface 31 of the transducer 3 exposed from the first bumper 110 and the second bumper 120 can be reduced.
　ところで、超音波センサ装置３０１は、図４に示すように、超音波センサ１と、ベゼル８（第１取付部材）と、を備える。ベゼル８（第１取付部材）は、図６に示すように、第１バンパー１１０の第１面１１１（表面）に取り付けられて第２面１１２（裏面）に突出する第１腕部８２を有する。超音波センサ装置３０２は、図７に示すように、超音波センサ１と、保持部材９（第２取付部材）とを備える。保持部材９（第２取付部材）は、図９に示すように、第２バンパー１２０の第２面１２２（裏面）に取り付けられて第２面１２２（裏面）から突出する第２腕部９４を有する。これにより、超音波センサ１は、超音波センサ装置３０１，３０２の何れにも用いることが可能である。 Incidentally, the ultrasonic sensor device 301 includes the ultrasonic sensor 1 and the bezel 8 (first mounting member), as shown in FIG. As shown in FIG. 6, the bezel 8 (first mounting member) has a first arm portion 82 that is attached to the first surface 111 (front surface) of the first bumper 110 and projects to the second surface 112 (back surface). . As shown in FIG. 7, the ultrasonic sensor device 302 includes an ultrasonic sensor 1 and a holding member 9 (second mounting member). As shown in FIG. 9, the holding member 9 (second attachment member) is attached to the second surface 122 (back surface) of the second bumper 120 and has a second arm portion 94 protruding from the second surface 122 (back surface). Have. Thereby, the ultrasonic sensor 1 can be used for any of the ultrasonic sensor devices 301 and 302.
　本実施形態における超音波センサ装置３０１では、ベゼル８は、第１バンパー１１０の表面に取り付けられる。ベゼル８の第１腕部８２は、第１バンパー１１０の孔１１３を通って第１バンパー１１０の表面から裏面に突出する。第１腕部８２は、孔１１３の軸から遠ざかる方向に撓む際に孔１１３の縁に接することにより、孔１１３の軸から遠ざかる方向に撓みにくくなっている。そのため、第１腕部８２の隙間８３に第１爪部１０が配置された状態から、第１腕部８２が第１爪部１０から外れにくくなっている。 In the ultrasonic sensor device 301 in the present embodiment, the bezel 8 is attached to the surface of the first bumper 110. The first arm portion 82 of the bezel 8 projects from the front surface of the first bumper 110 to the back surface through the hole 113 of the first bumper 110. The first arm portion 82 is less likely to bend in the direction away from the axis of the hole 113 by contacting the edge of the hole 113 when it is bent in the direction away from the axis of the hole 113. Therefore, it is difficult for the first arm portion 82 to come off the first claw portion 10 from the state where the first claw portion 10 is disposed in the gap 83 of the first arm portion 82.
　本実施形態における超音波センサ装置３０２では、保持部材９は、第２バンパー１２０の裏面に取り付けられる。保持部材９は、超音波センサ１におけるリブ９５が超音波センサ１の第１筒体２１に接し、第２腕部９４が超音波センサ１の第２筒体２２に接した状態でハウジング２を保持する。そのため、第２腕部９４の長さ（平面９０３の表面から第２腕部９４の先端までのｘ方向の寸法）がベゼル８の第１腕部８２の長さ（寸法Ｌ２）（図６参照）よりも大きくても、保持部材９は、ハウジング２の保持部材９に対する位置ずれを抑制することができる。 In the ultrasonic sensor device 302 according to this embodiment, the holding member 9 is attached to the back surface of the second bumper 120. The holding member 9 holds the housing 2 with the rib 95 of the ultrasonic sensor 1 in contact with the first cylinder 21 of the ultrasonic sensor 1 and the second arm portion 94 in contact with the second cylinder 22 of the ultrasonic sensor 1. Hold. Therefore, the length of the second arm portion 94 (the dimension in the x direction from the surface of the flat surface 903 to the tip of the second arm portion 94) is the length (dimension L2) of the first arm portion 82 of the bezel 8 (see FIG. 6). The holding member 9 can suppress the displacement of the housing 2 with respect to the holding member 9.
　ところで、ベゼル８の第１腕部８２における第１バンパー１１０の裏面からの突き出し寸法は、鍔部８０の第２面８０２から第１腕部８２の先端までの寸法（第１腕部８２の長さ）よりも、第１バンパー１１０の厚さ分だけ小さくなる。ベゼル８の第１腕部８２における第１バンパー１１０の第２面１１２からの突き出し寸法が小さいほど、超音波センサ１を第１バンパー１１０の第２面１１２に取り付けた状態の第１バンパー１１０の第２面１１２からの突き出し寸法を小さくすることが可能である。例えば超音波センサ１を第１バンパー１１０の第２面１１２に取り付けた状態で、超音波センサ１の底板６４から第１腕部８２の先端までの寸法を小さくすることにより、第１バンパー１１０の第２面１１２からの突き出し寸法を小さくすることが可能である。 By the way, the projecting dimension of the first arm portion 82 of the bezel 8 from the back surface of the first bumper 110 is the dimension from the second surface 802 of the collar 80 to the tip of the first arm portion 82 (the length of the first arm portion 82). )) By the thickness of the first bumper 110. As the projecting dimension of the first arm portion 82 of the bezel 8 from the second surface 112 of the first bumper 110 is smaller, the ultrasonic sensor 1 is attached to the second surface 112 of the first bumper 110. The protruding dimension from the second surface 112 can be reduced. For example, in a state where the ultrasonic sensor 1 is attached to the second surface 112 of the first bumper 110, the dimension from the bottom plate 64 of the ultrasonic sensor 1 to the tip of the first arm portion 82 is reduced, so that the first bumper 110 The protruding dimension from the second surface 112 can be reduced.
　ここで、超音波センサ１の２つの第２爪部２０のｚ方向への突出し寸法と、保持部材９の２つの第２腕部９４の厚さとの関係について図９を参照して説明する。 Here, the relationship between the projecting dimension of the two second claw portions 20 of the ultrasonic sensor 1 in the z direction and the thickness of the two second arm portions 94 of the holding member 9 will be described with reference to FIG.
　第２腕部９４における平面９４１が形成された部位の厚さを２等分する平面が仮想平面Ｍ１である。仮想平面Ｍ１は、ｚ軸と交差する仮想平面であり、平面９４１と平行する面である。２つの第２腕部９４は、２つの仮想平面Ｍ１の間におけるｚ方向の間隔が、２つの第２爪部２０の平面２０４の間におけるｚ方向の間隔よりも小さくなるように、保持部材９の補強部９０３の表面に設けられている。そのため、超音波センサ１における第２爪部２０の平面２０４は、仮想平面Ｍ１よりも保持部材９における孔９１１の軸から遠い位置に配置される。したがって、超音波センサ１における第２爪部２０の係止面２０１と保持部材９における孔９３の係止面９３１とが接する部位におけるｚ方向の寸法が、超音波センサ１の第２腕部９４における平面９４１が形成された部位の厚さの半分以上となる。言いかえると、超音波センサ１の第２爪部２０は、保持部材９（第２取付部材）に設けられた板状の第２腕部９４の厚さ方向に突出しており、超音波センサ１の第２爪部２０の突出寸法は、保持部材９の第２腕部９４の厚さの半分以上となっている。 The plane that bisects the thickness of the portion of the second arm 94 where the plane 941 is formed is the virtual plane M1. The virtual plane M1 is a virtual plane that intersects the z axis and is a plane parallel to the plane 941. The two second arm portions 94 are configured so that the interval in the z direction between the two virtual planes M1 is smaller than the interval in the z direction between the planes 204 of the two second claws 20. The reinforcing portion 903 is provided on the surface. Therefore, the plane 204 of the second claw portion 20 in the ultrasonic sensor 1 is disposed at a position farther from the axis of the hole 911 in the holding member 9 than the virtual plane M1. Therefore, the dimension in the z direction at the portion where the locking surface 201 of the second claw portion 20 in the ultrasonic sensor 1 and the locking surface 931 of the hole 93 in the holding member 9 are in contact with each other is the second arm portion 94 of the ultrasonic sensor 1. It becomes more than half of the thickness of the part in which the plane 941 is formed. In other words, the second claw portion 20 of the ultrasonic sensor 1 protrudes in the thickness direction of the plate-like second arm portion 94 provided on the holding member 9 (second mounting member). The projecting dimension of the second claw portion 20 is more than half the thickness of the second arm portion 94 of the holding member 9.
　第２腕部９４におけるテーパー面９４２が設けられた部位の厚さは、補強部９０３側（平面９０２側）に近づくにつれて大きくなっている。テーパー面９４２は、第２腕部９４における孔９１１の軸に近い側（平面９４１側）から孔９１１の軸に向かって第２腕部９４の厚さを大きくするように設けられている。そのため、テーパー面９４２が設けられた部位の厚さを２等分する面は、仮想平面Ｍ１よりも孔９１１の軸に近い位置にあることになる。一方、超音波センサ１における第２爪部２０の平面２０４は、仮想平面Ｍ１よりも孔９１１の軸から遠い位置にあるので、テーパー面９４２が設けられた部位の厚さを２等分する面よりも更に孔９１１の軸から遠い位置にある。 The thickness of the portion of the second arm portion 94 where the tapered surface 942 is provided increases as it approaches the reinforcing portion 903 side (plane 902 side). The tapered surface 942 is provided so as to increase the thickness of the second arm portion 94 from the side close to the axis of the hole 911 in the second arm portion 94 (plane 941 side) toward the axis of the hole 911. Therefore, the surface that bisects the thickness of the portion provided with the tapered surface 942 is located closer to the axis of the hole 911 than the virtual plane M1. On the other hand, since the plane 204 of the second claw portion 20 in the ultrasonic sensor 1 is located farther from the axis of the hole 911 than the virtual plane M1, the plane that bisects the thickness of the portion where the tapered surface 942 is provided. And farther away from the axis of the hole 911.
　例えば超音波センサ１の第２爪部２０が保持部材９の第２腕部９４に引っかかった状態で、超音波センサ１のハウジング２にｘ方向と逆方向の力が加わったとする。第２爪部２０の平面２０４はテーパー面９４２が設けられた部位の厚さを２等分する面よりも孔９１１の軸から遠い位置にあるので、第２爪部２０は、第２腕部９４を孔９１１の軸に近づける方向の力を第２腕部９４に加える。そのため、超音波センサ１のハウジング２にｘ方向と逆方向の力が加わると、保持部材９における２つの第２腕部９４は互いに近づく方向に撓む力を超音波センサ１の２つの第２爪部２０から受けることになる。したがって、超音波センサ１における２つの第２爪部２０が保持部材９における２つの第２腕部９４から外れにくくなる。 For example, it is assumed that a force in the direction opposite to the x direction is applied to the housing 2 of the ultrasonic sensor 1 in a state where the second claw portion 20 of the ultrasonic sensor 1 is caught by the second arm portion 94 of the holding member 9. Since the flat surface 204 of the second claw portion 20 is located farther from the axis of the hole 911 than the surface that bisects the thickness of the portion where the tapered surface 942 is provided, the second claw portion 20 has the second arm portion. A force is applied to the second arm portion 94 in such a direction that the 94 is brought close to the axis of the hole 911. Therefore, when a force in the direction opposite to the x direction is applied to the housing 2 of the ultrasonic sensor 1, the two second arm portions 94 of the holding member 9 exert a force that bends in a direction approaching each other. It will be received from the nail part 20. Accordingly, the two second claw portions 20 in the ultrasonic sensor 1 are unlikely to be detached from the two second arm portions 94 in the holding member 9.
　ところで、超音波センサ１の第２爪部２０が第１筒体２１に設けられていてもよいし、第１爪部１０が第２筒体２２に設けられていてもよい。また、超音波センサ１の第１爪部１０と第２爪部２０とが、ｙ方向に沿って並ぶようにハウジング２に設けられていてもよい。言いかえると、超音波センサ１の第１爪部１０から第１筒体２１の開口部２３１までの寸法と、第２筒体２２から第１筒体２１の開口部２３１までの寸法とが等しくてもよい。 By the way, the 2nd nail | claw part 20 of the ultrasonic sensor 1 may be provided in the 1st cylinder 21, and the 1st nail | claw part 10 may be provided in the 2nd cylinder 22. FIG. Further, the first claw portion 10 and the second claw portion 20 of the ultrasonic sensor 1 may be provided in the housing 2 so as to be aligned along the y direction. In other words, the dimension from the first claw 10 of the ultrasonic sensor 1 to the opening 231 of the first cylinder 21 is equal to the dimension from the second cylinder 22 to the opening 231 of the first cylinder 21. May be.
　超音波センサ１の第１爪部１０、第２爪部２０、及びガイド部４の数は、一例であり、超音波センサ１は適宜の数の第１爪部１０、第２爪部２０、及びガイド部４を備えていてもよい。超音波センサ１のガイド部４は省略可能である。また、超音波センサ１の第１爪部１０及び第２爪部２０の各々の配置は、本実施形態の配置に限定されず、超音波センサ１の筒部２００の側面の任意の位置に配置されてもよい。 The number of the first claw part 10, the second claw part 20, and the guide part 4 of the ultrasonic sensor 1 is an example, and the ultrasonic sensor 1 has an appropriate number of first claw parts 10, second claw parts 20, And the guide part 4 may be provided. The guide part 4 of the ultrasonic sensor 1 can be omitted. Further, the arrangement of the first claw part 10 and the second claw part 20 of the ultrasonic sensor 1 is not limited to the arrangement of the present embodiment, and is arranged at an arbitrary position on the side surface of the cylindrical part 200 of the ultrasonic sensor 1. May be.
　第１バンパー１１０と第２バンパー１２０とは、同じ形状のバンパーであってもよい。 The first bumper 110 and the second bumper 120 may be bumpers having the same shape.
　本発明は、超音波センサ及びそれを備える超音波センサ装置に利用できる。 The present invention can be used for an ultrasonic sensor and an ultrasonic sensor device including the same.
３０１，３０２　超音波センサ装置
１　超音波センサ
２　ハウジング
２００　筒部
２３１　開口部
３　トランスデューサ
１０　第１爪部
２０　第２爪部
８　ベゼル（第１取付部材）
８２　第１腕部
９　保持部材（第２取付部材）
９４　第２腕部
１１０　第１バンパー
１２０　第２バンパー
１１１　第１面（第１バンパーの表面）
１１２　第２面（第１バンパーの裏面）
１２２　第２面（第２バンパーの裏面） 301, 302 Ultrasonic sensor device 1 Ultrasonic sensor 2 Housing 200 Tube portion 231 Opening portion 3 Transducer 10 First claw portion 20 Second claw portion 8 Bezel (first attachment member)
82 1st arm part 9 Holding member (2nd attachment member)
94 2nd arm part 110 1st bumper 120 2nd bumper 111 1st surface (surface of 1st bumper)
112 Second side (back side of first bumper)
122 2nd surface (back surface of 2nd bumper)

Claims (6)

  1. 　筒部を有するハウジングと、
    　前記筒部の側面から突出する第１爪部と、
    　前記筒部の側面から突出する第２爪部と、
    　前記筒部に収納されて超音波を送受信するトランスデューサと、
    　を備え、
    　前記第１爪部は、孔が設けられた第１バンパーの表面に取り付けられた第１取付部材において前記表面から前記孔を通って裏面に突出する第１腕部に引っかけることが可能であり、
    　前記第２爪部は、第２バンパーの裏面に取り付けられた第２取付部材において前記裏面から前記第２バンパーの厚さ方向に突出する第２腕部に引っかけることが可能である
    　超音波センサ。     A housing having a cylindrical portion;
    A first claw portion protruding from a side surface of the cylindrical portion;
    A second claw portion protruding from a side surface of the tubular portion;
    A transducer housed in the cylindrical part for transmitting and receiving ultrasonic waves;
    With
    The first claw portion can be hooked on the first arm portion protruding from the surface through the hole to the back surface in the first attachment member attached to the surface of the first bumper provided with the hole,
    The ultrasonic sensor, wherein the second claw portion can be hooked on a second arm portion protruding in the thickness direction of the second bumper from the back surface in a second mounting member attached to the back surface of the second bumper.
  2. 　前記第１爪部と前記第２爪部とは離れており、
    　前記第２爪部は、前記第１爪部が前記第１腕部に引っかかった状態で前記第１腕部との間に隙間ができるように設けられた
    　請求項１に記載の超音波センサ。     The first claw portion and the second claw portion are separated from each other,
    The ultrasonic sensor according to claim 1, wherein the second claw portion is provided so that a gap is formed between the second claw portion and the first arm portion in a state where the first claw portion is hooked on the first arm portion.
  3. 　前記第１爪部と前記第２爪部とは離れており、
    　前記第１爪部は、前記第２爪部が前記第２腕部に引っかかった状態で前記第２腕部との間に隙間ができるように設けられた
    　請求項１に記載の超音波センサ。     The first claw portion and the second claw portion are separated from each other,
    The ultrasonic sensor according to claim 1, wherein the first claw portion is provided such that a gap is formed between the first claw portion and the second arm portion in a state where the second claw portion is caught by the second arm portion.
  4. 　前記筒部は、前記トランスデューサの超音波の送受波面を露出させる開口部を有し、
    　前記第１爪部は、前記第２爪部よりも前記開口部に近い位置に設けられた
    　請求項１～３の何れか１項に記載の超音波センサ。     The cylindrical portion has an opening that exposes an ultrasonic transmission / reception surface of the transducer,
    The ultrasonic sensor according to any one of claims 1 to 3, wherein the first claw portion is provided closer to the opening than the second claw portion.
  5. 　前記筒部は、第1筒体と制御部が収納される第２筒体とを含み、前記第1筒体の外径よりも、前記第２筒体の外径が大きくなっている
    　請求項１～４の何れか１項に記載の超音波センサ。     The cylindrical portion includes a first cylindrical body and a second cylindrical body in which the control unit is accommodated, and an outer diameter of the second cylindrical body is larger than an outer diameter of the first cylindrical body. 5. The ultrasonic sensor according to any one of 1 to 4.
  6. 　請求項１～５の何れか１項に記載の超音波センサと、
    　前記第１バンパーの前記表面に取り付けられて前記表面から前記孔を通って前記裏面に突出する前記第１腕部を有する前記第１取付部材、又は前記第２バンパーの前記裏面に取り付けられて前記裏面から突出する前記第２腕部を有する前記第２取付部材と、
    　を備えた
    　超音波センサ装置。     The ultrasonic sensor according to any one of claims 1 to 5,
    The first attachment member having the first arm portion attached to the front surface of the first bumper and protruding from the front surface through the hole to the back surface, or attached to the back surface of the second bumper. The second mounting member having the second arm portion protruding from the back surface;
    An ultrasonic sensor device comprising:
PCT/JP2017/000382 2016-03-01 2017-01-10 Ultrasonic sensor and ultrasonic sensor device provided with same WO2017149931A1 (en)

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JP7024662B2 (en) * 2018-08-24 2022-02-24 株式会社デンソー Retainer member
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JP2020082986A (en) * 2018-11-22 2020-06-04 三菱電機株式会社 Bezel type sonar

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