[특허]Obstacle detecting device

Denso Corporation

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Obstacle detecting device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60Q-001/00 G08B-023/00 G01S-015/00
미국특허분류(USC)	340/435; 340/943; 340/693.5; 340/693.6; 340/693.9; 340/693.11; 340/693.12; 367/093; 367/909
출원번호	US-0905755 (2007-10-03)
등록번호	US-8125321 (2012-02-28)
우선권정보	JP-2006-274416 (2006-10-05)
발명자 / 주소	Kojima, Kiyonari Hattori, Toshihiro Nakano, Akio
출원인 / 주소	Denso Corporation
대리인 / 주소	Nixon & Vanderhye PC
인용정보	피인용 횟수 : 4 인용 특허 : 4

초록
▼

An obstacle detecting device includes a wall member and an ultrasonic sensor. The wall member has a base member having an inner surface, and the base member extends in parallel with an imaginary plane. The ultrasonic sensor is attached to the inner surface of the base member for transmitting and receiving an ultrasonic wave via the base member. The ultrasonic sensor includes an ultrasonic transducer, and is in contact with the base member via a contact portion of the inner surface of the base member. The wall member includes a plurality of rigidity chang...

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1. An obstacle detecting device comprising: a wall member that has a base member having an inner surface, the base member extending in parallel with an imaginary plane; andan ultrasonic sensor that is attached to the inner surface of the base member for transmitting and receiving an ultrasonic wave via the base member, the ultrasonic sensor including an ultrasonic transducer, the ultrasonic sensor being in contact with the base member via a contact portion of the inner surface of the base member, wherein:the wall member includes a plurality of rigidity changing portions that are arranged on an other part of the inner surface other than the contact portion in an arrangement direction away from the contact portion. 2. The obstacle detecting device according to claim 1, wherein: the ultrasonic sensor includes a case that houses the ultrasonic transducer, the case having a bottom portion;the bottom portion has a first surface that is in contact with the ultrasonic transducer and is fixed to ultrasonic transducer; andthe bottom portion has a second surface that is in contact with the wall member, the second surface being located on an opposite side of the bottom portion opposite the first surface. 3. The obstacle detecting device according to claim 1, wherein the ultrasonic transducer is in contact with the wall member. 4. The obstacle detecting device according to claim 2, further comprising: a wave transmission portion that projects from a part of the second surface of the bottom portion, wherein:the wave transmission portion is in contact with the wall member. 5. The obstacle detecting device according to claim 4, wherein the wave transmission portion has a contact surface that is in contact with the bottom portion, the contact surface of the wave transmission portion having a shape in parallel with the imaginary plane different from a shape of the bottom portion. 6. The obstacle detecting device according to claim 2, further comprising a wave transmission portion that projects from the wall member, the wave transmission portion being in contact with the ultrasonic sensor, wherein the wave transmission portion has a contact surface different in at least one of a shape and an area from that of the ultrasonic sensor. 7. The obstacle detecting device according to claim 2, further comprising: a wave transmission portion that is provided to a part of the bottom portion of the case, the wave transmission portion being in contact with the wall member and with the ultrasonic transducer, the wave transmission portion made of a material having an acoustic impedance that ranges generally at a middle between an acoustic impedance of the wall member and an acoustic impedance of the ultrasonic transducer, wherein the ultrasonic wave is transmitted via the wave transmission portion and the wall member. 8. The obstacle detecting device according to claim 7, wherein the acoustic impedance of the wave transmission portion is closer to an a median value between the acoustic impedance of the ultrasonic transducer and the acoustic impedance of the wall member closer than an acoustic impedance of an other part of the bottom portion of the case, the other part being located around the wave transmission portion. 9. The obstacle detecting device according to claim 4, wherein: the wave transmission portion has a shape in parallel with the imaginary plane, the shape having a first length in a first direction and a second length in a second direction orthogonal to the first direction, the first length being different from the second length. 10. The obstacle detecting device according to claim 1, wherein the plurality of rigidity changing portions includes a groove provided to the other part of the inner surface. 11. The obstacle detecting device according to claim 10, wherein; the groove is provided adjacent to an outer periphery of the contact portion; andthe groove is recessed relative to the contact portion of the inner surface. 12. The obstacle detecting device according to claim 1, wherein the plurality of rigidity changing portions includes a projection provided to the other part of the inner surface. 13. The obstacle detecting device according to claim 12, wherein the projection is one of a plurality of projections. 14. The obstacle detecting device according to claim 13, wherein each of the plurality of projections is arranged adjacent to each other in the arrangement direction. 15. The obstacle detecting device according to claim 13, wherein: at least one of the plurality of projections has a first length in a perpendicular direction to the imaginary plane;another one of the plurality of projections has a second length in the perpendicular direction; andthe first length is different from the second length. 16. The obstacle detecting device according to claim 12, wherein: the projection has a length in a perpendicular direction to the imaginary plane;the base member has a part, on which the projection is provided, the part of the base member having a length in the perpendicular direction; andthe length of the projection is equal to or larger than the length of the part of the base member. 17. The obstacle detecting device according to claim 12, wherein: the projection has a length in the arrangement direction;the base member has a part, on which the projection is provided, the part of the base member having a length in a perpendicular direction to the imaginary plane; andthe length of the projection in the arrangement direction is equal to or less than the length of the part of the base member in the perpendicular direction. 18. The obstacle detecting device according to claim 12, wherein at least one projection is provided integrally with the wall member by a material identical to that of the wall member. 19. The obstacle detecting device according to claim 1, wherein at least one of the plurality of rigidity changing portions has a ring shape and is provided to surround the contact portion. 20. The obstacle detecting device according to claim 19, wherein the at least one of the plurality of rigidity changing portions is provided along an outer peripheral shape of the contact portion. 21. The obstacle detecting device according to claim 19, wherein the at least one of the plurality of rigidity changing portions is located closest to the contact portion. 22. The obstacle detecting device according to claim 21, wherein the at least one of the plurality of rigidity changing portions is provided adjacent to an outer periphery of the contact portion. 23. The obstacle detecting device according to claim 19, wherein: each of the plurality of rigidity changing portions is provided concentrically relative to the contact portion; andthe contact portion is surrounded by each of the plurality of rigidity changing portions. 24. The obstacle detecting device according to claim 19, wherein each of the plurality of rigidity changing portions has the ring shape. 25. The obstacle detecting device according to claim 1, the device further comprising a damping member that is provided to the other part of the inner surface, the damping member being made of a material having a damping coefficient larger than that of the wall member. 26. The obstacle detecting device according to claim 25, wherein the damping member is arranged on a side of the plurality of rigidity changing portions in the arrangement direction. 27. The obstacle detecting device according to claim 1, wherein each of the plurality of rigidity changing portions is configured to cause a rigidity of a corresponding part of the base member to be different from a rigidity of the base member, the corresponding part being located on an opposite side of each of the plurality of rigidity changing portions opposite the arrangement direction. 28. The obstacle detecting device according to claim 4, further comprising a wave transmission portion that projects from the wall member, the wave transmission portion being in contact with the ultrasonic sensor, wherein the wave transmission portion has a contact surface different in at least one of a shape and an area from that of the ultrasonic sensor. 29. The obstacle detecting device according to claim 4, further comprising: a wave transmission portion that is provided to a part of the bottom portion of the case, the wave transmission portion being in contact with the wall member and with the ultrasonic transducer, the wave transmission portion made of a material having an acoustic impedance that ranges generally at a middle between an acoustic impedance of the wall member and an acoustic impedance of the ultrasonic transducer, wherein the ultrasonic wave is transmitted via the wave transmission portion and the wall member. 30. The obstacle detecting device according to claim 28, wherein: the wave transmission portion has a shape in parallel with the imaginary plane, the shape having a first length in a first direction and a second length in a second direction orthogonal to the first direction, the first length being different from the second length. 31. The obstacle detecting device according to claim 29, wherein: the wave transmission portion has a shape in parallel with the imaginary plane, the shape having a first length in a first direction and a second length in a second direction orthogonal to the first direction, the first length being different from the second length. 32. An obstacle detecting device comprising: a wall member that has a base member having an inner surface, the base member extending in parallel with an imaginary plane; andan ultrasonic sensor that is attached to the inner surface of the base member for transmitting and receiving an ultrasonic wave via the base member, the ultrasonic sensor having a vibratory portion that is in contact with a contact portion of the inner surface of the base member, wherein:the wall member includes a plurality of rigidity changing portions that are arranged on an other part of the inner surface other than the contact portion in an arrangement direction away from the contact portion. 33. The obstacle detecting device according to claim 32, wherein: the vibratory portion of the ultrasonic sensor includes an ultrasonic transducer and a case that houses the ultrasonic transducer, the case having a bottom portion; andthe ultrasonic transducer is in contact with the base member via the bottom portion. 34. The obstacle detecting device according to claim 32, further comprising: a wave transmission portion that projects from the contact portion of the inner surface of the base member, the wave transmission portion being in contact with the ultrasonic sensor. 35. The obstacle detecting device according to claim 33, further comprising: a wave transmission portion that projects from a part of the bottom portion of the case, the wave transmission portion being in contact with the contact portion of the inner surface of the base member. 36. The obstacle detecting device according to claim 32, wherein the plurality of rigidity changing portions includes a groove recessed in the base member in a perpendicular direction to the imaginary plane, the groove having a ring shape on the imaginary plane to surround the contact portion of the inner surface. 37. The obstacle detecting device according to claim 32, wherein the plurality of rigidity changing portions includes a projection that projects from the other part of the inner surface in a direction perpendicular to the imaginary plane.

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Obstacle detecting device

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Obstacle detecting device

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이 특허에 인용된 특허 (4)

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IPC 상세정보(version : 201201)

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