[특허]Ultrasonic sensor having compressively deformed spring resiliently attaching sensor body and bezel

Denso Corporation

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Ultrasonic sensor having compressively deformed spring resiliently attaching sensor body and bezel

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01D-011/24
미국특허분류(USC)	367/140; 367/188
출원번호	UP-0712530 (2007-03-01)
등록번호	US-7522474 (2009-07-01)
우선권정보	JP-2006-071288(2006-03-15); JP-2006-071289(2006-03-15)
발명자 / 주소	Nakajima, Akira Kawashima, Yasuhiro Kani, Hiroyuki Shimizu, Tadao
출원인 / 주소	Denso Corporation
대리인 / 주소	Nixon & Vanderhye, PC
인용정보	피인용 횟수 : 2 인용 특허 : 4

초록

An ultrasonic sensor has a sensor body and a bezel having a metal spring attached on a side wall thereof for installation on a vehicle component. A free end of the metal spring is positioned to protrude from a through hole of the side wall, is pressed by a portion of the sensor body that is inserted in a hollow space of the bezel, and is pushed back by an opening face of the sensor body. In this manner, the bezel is firmly attached on the component and the sensor body is firmly attached on the bezel.

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What is claimed is: 1. An ultrasonic sensor comprising: a bezel in a pipe shape with an opening on one end and a hollow space housed therein; a sensor body having an insertion portion with an ultrasonic transducer disposed therein; and a spring, said spring being made of metal, wherein the bezel has a side wall having an opening of a through hole that connects an outside of the bezel and the hollow space, the side wall of the bezel has the spring disposed at a position of the through hole, insertion of the bezel into a hole portion of a vehicle component from an outside of the component accompanied by having the insertion portion of the sensor body being inserted from an inside of the component into the hollow space of the bezel causes a compressive deformation condition of the spring positioned between an outer wall of the insertion portion and a wall face of the hole portion, the spring is initially compressively deformed toward a center of the hole portion by the wall face of the hole portion when the bezel is inserted into the hole portion of the vehicle component. the spring is then compressively deformed toward an outside of the hole portion at a position between the outer wall of the insertion portion and the wall face of the hole portion when the insertion portion of the sensor body is inserted into the hollow space of the bezel, and the compressive deformation condition of the spring generates a reactive force of the spring that resiliently attaches the sensor body and the bezel on the wall face of the hole portion of the component. 2. The ultrasonic sensor as in claim 1, wherein the spring having contact with the wall face of the hole portion protrudes from the through hole to the hollow space of the bezel when the insertion portion is inserted in the hollow space, and a portion of the spring protruding in the hollow space of the bezel is pushed back by the outer wall of the insertion portion to cause the reactive force of the spring when the insertion portion is in a condition of insertion into the hollow space. 3. The ultrasonic sensor as in claim 1, wherein the spring has a fixed end that is fixed on the bezel and a free end that is displaceable by an external force, the free end is positioned in the through hole, and the reactive force of the free end in the compressive deformation condition attaches the sensor body and the bezel on the wall face of the hole portion. 4. The ultrasonic sensor as in claim 3, wherein the bezel has a flange formed at a rear end relative to an insertion direction of the bezel into the hole portion of the component for regulating an insertion amount of the bezel into the hole portion, the metal spring has the fixed end fixed at a front end of the bezel relative to the insertion direction and the free end positioned toward the rear end of the insertion direction, the free end of the metal spring has a convex portion that inclines relative to the insertion direction of the bezel, and the convex portion applying the reactive force and the flange hold the component when the bezel is inserted in the hole portion of the component. 5. The ultrasonic sensor as in claim 4, wherein the flange and the component defines an empty space interposed therebetween, and the spring protrudes from an outer face of the component into the empty space. 6. The ultrasonic sensor as in claim 5, wherein the flange is at least partially larger than the hole portion. 7. The ultrasonic sensor as in claim 4, wherein the spring is formed by bending a rod shape member, the rod member has the fixed end and the free end, the free end has a bending portion that is formed by bending a tip of the free end toward the fixed end, and the tip of the free end is prevented from entering the through hole by being held by a wall that defines the through hole. 8. The ultrasonic sensor as in claim 4, wherein the side wall of the bezel has a nail that prevents the bezel from falling from the hole portion at a position that is apart from the flange by at least an amount of the thickness of the component. 9. The ultrasonic sensor as in claim 1, wherein the bezel is in a cylinder shape, and the insertion portion of the sensor body is in a column shape. 10. The ultrasonic sensor as in claim 9, wherein plural pieces of the spring are positioned equiangularly around a center of the bezel. 11. An ultrasonic sensor comprising: a bezel in a pipe shape with an opening on one end and a hollow space housed therein; a sensor body having an insertion portion with an ultrasonic transducer disposed therein; and a spring, the spring being made of metal, wherein the bezel has a side wall having an opening of a through hole that connects an outside of the bezel and the hollow space, the side wall of the bezel has the spring disposed at a position of the through hole, insertion of the bezel into a hole portion of a vehicle component from an outside of the component accompanied by having the insertion portion of the sensor body being inserted from an inside of the component into the hollow space of the bezel causes a compressive deformation condition of the spring positioned between an outer wall of the insertion portion and a wall face of the hole portion, the snring is first compressively deformed toward a center of the hole portion by the wall face of the hole portion when the bezel is inserted into the hole portion of the vehicle component. the spring is then compressively deformed toward an outside of the hole portion at a position between the outer wall of the insertion portion and the wall face of the hole portion when the insertion portion of the sensor body is inserted into the hollow space of the bezel, the compressive deformation condition of the spring generates a reactive force of the spring that resiliently attaches the sensor body and the bezel on the wall face of the hole portion of the component, a portion of the bezel is formed in a shape that contacts the vehicle component at a tip part, the portion of the bezel and the component defines an empty space interposed therebetween, and the spring protrudes from an outer face of the component into the empty space. 12. The ultrasonic sensor as in claim 11, wherein the spring having contact with the wall face of the hole portion protrudes from the through hole to the hollow space of the bezel when the insertion portion is inserted in the hollow space, and a portion of the spring protruding in the hollow space of the bezel is pushed back by the outer wall of the insertion portion to cause the reactive force of the spring when the insertion portion is in a condition of insertion into the hollow space. 13. The ultrasonic sensor as in claim 11, wherein the spring has a fixed end that is fixed on the bezel and a free end that is displaceable by an external force, the free end is positioned in the through hole, and the reactive force of the free end in the compressive deformation condition attaches the sensor body and the bezel on the wall face of the hole portion. 14. The ultrasonic sensor as in claim 11, wherein the portion of the bezel is a flange that is at least partially larger than an opening of the hole portion. 15. The ultrasonic sensor as in claim 14, wherein the flange is formed at a rear end relative to an insertion direction of the bezel into the hole portion of the component for regulating an insertion amount of the bezel into the hole portion, the metal spring has the fixed end fixed at a front end of the bezel relative to the insertion direction and the free end positioned toward the rear end of the insertion direction, the free end of the metal spring has a convex portion that inclines relative to the insertion direction of the bezel, and the convex portion applying the reactive force and the flange hold the component when the bezel is inserted in the hole portion of the component. 16. The ultrasonic sensor as in claim 11, wherein the shape of the portion of the bezel is an arc shape in its cross section, and the arc shape has contact with the component at a farthest portion from a center of the bezel. 17. The ultrasonic sensor as in claim 11, wherein the shape of the portion of the bezel is a bent shape in its cross section, and the arc shape has contact with the component at a farthest portion from a center of the bezel. 18. The ultrasonic sensor as in claim 11, wherein the bezel is in a cylinder shape, and the insertion portion of the sensor body is in a column shape. 19. The ultrasonic sensor as in claim 17, wherein plural pieces of the spring are positioned equiangularly around a center of the bezel.

인용문헌 (4)

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Ultrasonic sensor having compressively deformed spring resiliently attaching sensor body and bezel

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Ultrasonic sensor having compressively deformed spring resiliently attaching sensor body and bezel

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인용문헌 (4)

이 특허를 인용한 특허 (2)

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