Crack-preventive screw-fastening structure for resinous housing
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0674501
(2003-10-01)
|
우선권정보 |
JP-2002-288262(2002-10-01) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
7 |
초록
▼
An adhesive is applied to a male-threaded portion of a tapping screw. The male-threaded portion with the adhesive is threadably engaged with a non-threaded through hole of the full-closed stopper with female-threads being formed on the surface of the though hole. In this case, the adhesive functions
An adhesive is applied to a male-threaded portion of a tapping screw. The male-threaded portion with the adhesive is threadably engaged with a non-threaded through hole of the full-closed stopper with female-threads being formed on the surface of the though hole. In this case, the adhesive functions as lubricant between the inner surface of the through hole and the male-threaded portion. Accordingly, the male-threaded portion can be screwed into the through hole with a low torque and without applying high load to the full-close stopper. Therefore, the full-close stopper is prevented from being projected around the inlet and the outlet of the through hole, and the full-close stopper is prevented from being cracked.
대표청구항
▼
What is claimed is: 1. A screw fastening structure comprising: a screw having a male-threaded portion and a screw head, which is positioned at an end of the screw in opposition to an engaging side of the screw; and a housing including a resinous portion to be threadably engaged with the male-thread
What is claimed is: 1. A screw fastening structure comprising: a screw having a male-threaded portion and a screw head, which is positioned at an end of the screw in opposition to an engaging side of the screw; and a housing including a resinous portion to be threadably engaged with the male-threaded portion; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein; the resinous portion has a round through hole for guiding the male-threaded portion to be engaged therewith, said through hole extending completely through said resinous portion; the resinous portion has a clearance inlet hole defined therein around an inlet of and concentrically with the through hole; and an inner diameter of the clearance inlet hole is larger than an outer diameter of the male-threaded portion. 2. The screw fastening structure according to claim 1, wherein the clearance inlet hole has a tapering shape, where the inner diameter of the clearance inlet hole becomes smaller in a screwing direction of the screw. 3. A screw fastening structure comprising: a screw having a male-threaded portion and a screw head, which is positioned at an end of the screw in opposition to an engaging side of the screw; a housing including a resinous portion having a through hole to be threadably engaged with the male-threaded; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein the length of the male-threaded portion is shorter than the length of the resinous portion through hole so that the male-threaded portion does not project from the outlet of the resinous portion through hole when engaged therewith. 4. A screw fastening structure comprising: a screw having a male-threaded portion; a housing including a resinous portion to be threadably engaged with the male-threaded portion; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein the resinous portion has a round through hole for guiding the male-threaded portion to be engaged therewith, said through hole extending completely through said resinous portion, and the resinous portion has a clearance portion defined therein around an outlet of and concentrically with the resinous portion through hole. 5. The screw fastening structure according to claim 4, wherein the clearance portion is a clearance outlet hole, the inner diameter of which is larger than the outer diameter of the male-threaded portion. 6. The screw fastening structure according to claim 4, wherein the clearance portion is formed by a chamfered outlet portion. 7. A screw fastening structure comprising: a screw having a male-threaded portion; a housing including a resinous portion to be threadably engaged with the male-threaded portion; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein the housing is a throttle housing, which is used for a throttle valve system and has a bore portion in which a throttle valve is rotatably installed; the resinous portion is a boss-shaped portion that projects from an outer wall of the throttle housing; and the screw is a tapping screw for controlling one of an opened degree and a closed degree of the throttle valve. 8. The screw fastening structure according to claim 7, wherein: the resinous portion has a round through hole for guiding the male-threaded portion to be engaged therewith; the adhesive is applied in its non-hardened state to the inner surface of the through hole before the male-threaded portion is threadably engaged with the inner surface of the through hole; and the adhesive is hardened after the male-threaded portion is threadably engaged with the through hole. 9. A screw fastening structure comprising: a screw having a male-threaded portion; a housing including a resinous portion to be threadably engaged with the male-threaded portion; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein: the housing is a throttle housing, which is used for a throttle valve system and has a bore portion in which a throttle valve is rotatably installed; the resinous portion is a boss-shaped portion that projects from an outer wall of the throttle housing; and the screw is a fastening screw for fastening an attachment member, having a through hole, to the boss-shaped portion. 10. A screw fastening structure comprising: a screw having a male-threaded portion; a housing including a resinous portion to be threadably engaged with the male-threaded portion; and an adhesive permeating between the male-threaded portion and the resinous portion, wherein the male-threaded portion has a non-circular shape in its cross-section that is perpendicular to an axial, screw advancing direction of the male-threaded portion, wherein the male-threaded portion has a non-circular shape in plan view. 11. The screw fastening structure according to claim 10, wherein the non-circular shape is a substantially triangle shape. 12. The screw fastening structure according to claim 9, wherein: the resinous portion has a round through hole for guiding the male-threaded portion to be engaged therewith; the adhesive is applied in its non-hardened state to the inner surface of the through hole before the male-threaded portion is threadably engaged with the inner surface of the through hole; and the adhesive is hardened after the male-threaded portion is threadably engaged with the through hole. 13. The screw fastening structure according to claim 10, wherein: the resinous portion has a round through hole for guiding the male-threaded portion to be engaged therewith, said through hole extending completely through said resinous portion; the adhesive is applied in its non-hardened state to the inner surface of the through hole before the male-threaded portion is threadably engaged with the inner surface of the through hole; and the adhesive is hardened after the male-threaded portion is threadably engaged with the through hole. 14. The screw fastening structure according to claim 3, wherein the screw has a non-threaded portion, which is positioned at an end of the screw in opposition to the side of the screw head, the non-threaded portion has non male threads, and the non-threaded portion projects from the outlet of the through hole. 15. The screw fastening structure according to claim 4, wherein the male-threaded portion has a length that is longer than a length of the through hole in an axial, screw advancing direction.
이 특허에 인용된 특허 (7)
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Andre Guy (Seyssinet Pariset FRX) Barnavol Charles (Grenoble FRX), Adjustable spacer.
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Giannuzzi Louis N. ; Giannuzzi Anthony C., Chemical self-tapping, screw-type masonry anchor.
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Wollar Burnell (Barrington IL), Fastener having press-on plastic nut.
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DiMaio Anthony E. (Barre VT) Duffy Richard (Shelby Twp. MI) Pollizzi Mario (Rochester MI) Sessa Eugene D. (Mt. Clemens MI), High temperature self-locking threaded fastener.
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Nickerson, Earl S.; Tucker, Wayne C.; Spicola, Francis C., Isolated mechanical fastening system.
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Kurihara Kazumasa (Utsunomiya JPX), Screw retainer.
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Kubler, Frank L.; Ducker, III, Andrew L., Sealable fastener with sealant delivery passageway to circumferential sealant channel.
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