[특허]Electromechanical fastener driving tool

Sencorp

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특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Electromechanical fastener driving tool

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B25C-001/06
미국특허분류(USC)	227/131; 227/134; 173/121
출원번호	US-0012884 (1993-02-03)
발명자 / 주소	Crutcher, John P.
출원인 / 주소	Sencorp
대리인 / 주소	Litzinger, Jerrold J.
인용정보	피인용 횟수 : 62 인용 특허 : 4

초록

An electromechanical tool for driving fasteners into a workpiece. The tool uses a single flywheel in combination with a clutch mechanism whereby a conically shaped flywheel frictionally cooperates with a corresponding drum to cause a driver which is coupled to the drum by a cable to be pulled with considerable force through a working stroke to drive a fastener from the tool.

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1. A tool for driving fasteners, comprising: a housing; a fastener containing magazine attached to said housing; a prime mover located within said housing; a flywheel mechanically coupled to said prime mover and rotatably mounted on an axis; a drum, mounted on an axis, shiftable along the axis to a position of frictional engagement with said flywheel; a fastener driver, located within said housing, shiftable between a first unactuated position and a second fastener driving position; means for coupling said driver to said drum; and means for shifting said drum into frictional engagement with said flywheel, whereby said driver is shifted by said coupling means from said first position to said second position. 2. The tool of claim 1, wherein said coupling means comprises a metal cable. 3. The tool of claim 2, wherein said cable consists of a plurality of individual cables coupled in a single plane. 4. The tool of claim 1, whereby said flywheel has a conically shaped outer periphery and said drum has a corresponding conically shaped internal surface. 5. The tool of claim 4, wherein the internal surface of said drum is lined with a material to improve frictional engagement. 6. The tool of claim 4, wherein said drum shifting means further comprises a clutch assembly, located coaxially with respect to said flywheel and said drum and rotatable about said axis, for shifting said drum into said position of frictional engagement with said flywheel, said clutch assembly comprising: a toothed wheel having a plurality of ramps located on one side; a pusher plate, having a plurality of ramps located on the side adjacent said wheel corresponding to said ramps on said wheel; and a plurality of ball bearings, located between said wheel and said plate, corresponding to said ramps, whereby rotation of said clutch assembly causes said ball bearings to contact said ramps and shift said pusher plate into contact with said drum. 7. The tool of claim 6, wherein said outer periphery of said flywheel contains a channel within which said coupling means is wound when said fastener driver is in said first unactuated position. 8. The tool of claim 7, further comprising a torsion spring coupled to said flywheel for returning said fastener driver from said second fastener driving position to said first unactuated position. 9. The tool of claim 8, further comprising means for activating said clutch assembly. 10. The tool of claim 9, wherein said clutch activating means includes a solenoid having a plunger positioned to contact said toothed wheel, and a trigger means electrically coupled to said solenoid, such that when said trigger means is activated, said plunger rotates said toothed wheel and activates said clutch assembly. 11. The tool of claim 4, wherein said drum contains a stop lug extending from its outer surface. 12. The tool of claim 11, further comprising a frame contained within said housing, and a plurality of stops attached to said frame, such that rotation of said drum is limited by said stop lug contacting said stops. 13. The tool of claim 4, wherein said drum has an outer surface containing a plurality of outwardly extending spaced apart lugs on said outer surface. 14. The tool of claim 13, further comprising a stop arm for cooperating with the lugs of said drum to stop the rotation of said drum. 15. The tool of claim 1, further comprising a spring for biasing said drum away from said flywheel. 16. The tool of claim 1, further comprising means for returning said driver from said second fastener driving position to said first unactuated position. 17. The tool of claim 1, wherein said drum shifting means further comprises a clutch assembly, located along said axis with respect to said flywheel and said drum and rotatable about said axis, for shifting said drum into said position of frictional engagement with said flywheel. 18. The tool of claim 17, wherein said clutch assembly comprises: a toothed wheel having a plurality of ramps located on one side; a pusher plate, having a plurality of ramps located on the side adjacent said wheel corresponding to said ramps on said wheel; and a plurality of ball bearings, located between said wheel and said plate, corresponding to said ramps, whereby rotation of said clutch assembly causes said ball bearings to contact said ramps and shift said pusher plate into contact with said drum. 19. The tool of claim 18, wherein said clutch assembly further comprises a disk, positioned between said wheel and said plate, having a plurality of apertures for positioning said ball bearings, whereby the rotation of said clutch assembly causes said ball bearings to contact said ramps and shift said toothed wheel away from said pusher plate. 20. The tool of claim 19, further comprising a locking ring having a toothed inner periphery corresponding to said toothed wheel for holding said toothed wheel in a stationary position after said wheel is shifted away from said pusher plate. 21. The tool of claim 1, further comprising means for stopping said driver when it has reached said second fastener driving position. 22. An electromechanical tool for driving fasteners into a workpiece, comprising: a housing; a magazine for holding fasteners affixed to said housing; a driver shiftable through a work stroke between a normal retracted position and an extended fastener driving position; a guide body affixed to said housing adjacent said magazine defining a drive track for said driver; a motor located within said housing; a stationary shaft rigidly affixed within said housing; a conically shaped flywheel, rotatably affixed to said shaft and mechanically coupled to said motor for rotation; a drum,rotatably affixed to said shaft and mounted on said shaft adjacent said flywheel, having a conical shape corresponding to said flywheel and shiftable along said shaft to a position of frictional engagement with said flywheel; a driver shifting means, coupled at one end to said driver and at the other end to said drum, capable of being wound about said drum for shifting said driver between said normal and said extended positions; and a clutch assembly for shifting said drum into frictional engagement with said flywheel; whereby when said clutch assembly is activated, said drum is shifted into frictional engagement with said rotating flywheel, causing rotation of said drum and shifting said driver from said normal retracted position through a work stroke to said extended fastener driving position. 23. The tool of claim 22, further comprising a torsion spring for returning said driver to its normal retracted position after the work stroke is complete. 24. The tool of claim 22, wherein said driver shifting means comprises a metal cable. 25. The tool of claim 22, wherein said clutch assembly comprises: a pusher plate, rotatably affixed to said shaft and mechanically coupled to said drum, containing a plurality of ramps located on its surface away from said drum; a wheel, rotatably affixed to said shaft, having a toothed outer periphery and containing a plurality of ramps located on its surface toward said plate, a thin disk, positioned on said shaft between said plate and said wheel, having a plurality of apertures; and a plurality of ball bearings located within the apertures of said disk; such that rotation of said wheel causes said ball bearing to contact the ramps of said plate and said wheel, whereby shifting said drum into frictional engagement with said flywheel. 26. The tool of claim 25, further comprising means for activating said clutch assembly. 27. The tool of claim 26, wherein said clutch activating means include a solenoid having a plunger positioned to contact the outer periphery of said toothed wheel, and a trigger means electrically coupled to said solenoid, such that when said trigger means is activated, said plunger rotates said toothed wheel and activates said clutch assembly. 28. The tool of claim 25, further comprising means for stopping the rotation of said drum when said driver has reached said extended fastener driving position. 29. The tool of claim 22, wherein the internal surface of said drum is lined with a material to improve frictional engagement. 30. The tool of claim 22, further comprising a spring for biasing said drum away from said flywheel.

이 특허에 인용된 특허 (4)

이 특허를 인용한 특허 피인용횟수: 62

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특허 상세정보

Electromechanical fastener driving tool

초록

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이 특허에 인용된 특허 (4)

이 특허를 인용한 특허 피인용횟수: 62

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특허 상세정보

Electromechanical fastener driving tool

초록

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이 특허에 인용된 특허 (4)

이 특허를 인용한 특허 피인용횟수: 62

IPC 상위 출원인

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상세정보조회

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IPC 상세정보(version : 201201)

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