IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0139716
(2005-05-27)
|
등록번호 |
US-7287600
(2007-10-30)
|
우선권정보 |
DE-10 2004 026 845(2004-06-02) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
13 |
초록
▼
A hand power tool has a housing, a drive motor and a gear mechanism arranged in the housing. A tool receptacle accommodates a tool, and a gear wheel drives a rotary sleeve in rotation from the drive motor and the gear mechanism and thereby the tool receptacle. A hammering mechanism is located inside
A hand power tool has a housing, a drive motor and a gear mechanism arranged in the housing. A tool receptacle accommodates a tool, and a gear wheel drives a rotary sleeve in rotation from the drive motor and the gear mechanism and thereby the tool receptacle. A hammering mechanism is located inside the rotary sleeve and drivable translationally via a wobble gear. The gear mechanism has a driving gear wheel meshing with a motor pinion and arranged on a shaft by which the wobble gear mechanism is drivable to revolve. The shaft is configured as a hollow shaft on which the driving gear wheel is retained nondisplaceably and in a manner fixed against rotation. The wobble gear mechanism is located adjacent to the driving gear wheel on the shaft rotatably and couplably to the hollow shaft.
대표청구항
▼
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims: 1. A hand power tool, comprising a housing; a drive motor and a gear mechanism arranged in said housing; a tool receptacle in which a tool is guidable; a gear wheel via which a rotary sleeve is
What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims: 1. A hand power tool, comprising a housing; a drive motor and a gear mechanism arranged in said housing; a tool receptacle in which a tool is guidable; a gear wheel via which a rotary sleeve is driven in rotation from said drive motor and said gear mechanism and thereby said tool receptacle is driven in rotation; a hammering mechanism located inside said rotary sleeve and drivable translationally via a wobble gear mechanism, said gear mechanism having a driving gear wheel meshing with a motor pinion and arranged on a shaft by which said wobble gear mechanism is drivable to revolve, said shaft being configured as a hollow shaft on which said driving gear wheel is retained nondisplaceably and in a manner fixed against rotation, said wobble gear mechanism being located adjacent to said driving gear wheel on said shaft rotatably and couplably to said hollow shaft, wherein said hollow shaft includes transmission elements which are separate from said hollow shaft and supported in radially passable oblong slots, by means of which separate transmission elements said wobble gear mechanism is couplable with said hollow shaft in a circumferential direction for rotary slaving. 2. A hand power tool as defined in claim 1, wherein said drive motor is an electrical drive motor. 3. A hand power tool as defined in claim 1, wherein said hollow shaft has two ends; and further comprising bearings supporting said hollow shaft on said two ends in said housing. 4. A hand power tool as defined in claim 3, wherein said ends of said hollow shaft are supported in a bearing flange and in a gear box correspondingly. 5. A hand power tool as defined in claim 3, wherein one of said ends is supported in said housing by a fixed bearing formed as a ball bearing, while the other of said ends of said hollow shaft is supported in said housing by a loose bearing formed as a needle bearing. 6. A hand power tool as defined in claim 1, wherein said transmission elements are formed as elements selected from the group consisting of rollers, cylindrical bodies, or balls. 7. A hand power tool as defined in claim 1, wherein said wobble gear mechanism has a wobble body provided on its inner circumferential face with longitudinal recesses with which said transmission elements are meshable for form-locking rotary slaving, and with an encompassing groove in which said transmission elements are capable of revolving freely without a form-locking connection with said wobble gear mechanism. 8. A hand power tool as defined in claim 7, wherein said longitudinal recesses of said wobble body are formed as longitudinal grooves. 9. A hand power tool as defined in claim 7; and further comprising a switching shaft which is supported axially displaceably inside said hollow shaft and on its outer circumferential face has an encompassing recess into which said transmission elements, protruding radially inwards past said hollow shaft, engage, said switching shaft being displaceable together with said transmission elements relative to said hollow shaft and said wobble gear mechanism between positions in which said transmission elements mesh in a form-locking manner for rotary slaving with said longitudinal recesses of said wobble gear mechanism, and a position in which said transmission elements engage inside said encompassing groove of said wobble gear mechanism and revolve freely therein. 10. A hand power tool as defined in claim 9, wherein said encompassing recess of said switching shaft is formed as an encompassing groove. 11. A hand power tool as defined in claim 9; and further comprising an actuating device, said switching shaft having an actuating portion which is engaged by said actuating device for axial displacement, and an end portion provided with an outer toothing. 12. A hand power tool as defined in claim 11, wherein said outer toothing has longitudinally oriented teeth and is formed as a spline shaft toothing. 13. A hand power tool as defined in claim 11, wherein said end portion of said switching shaft meshes with said gear wheel of said rotary sleeve. 14. A hand power tool as defined in claim 13, wherein said gear wheel of said rotary sleeve is a spur gear wheel. 15. A hand power tool as defined in claim 14, wherein said blocking part is formed as an internally-toothed hollow wheel part. 16. A hand power tool as defined in claim 11, wherein said housing has a hammering mechanism housing with a blocking part which is axially aligned with said outer toothing of said end portion of said switching shaft and with which said outer toothing of said switching shaft is bringable into blocking engagement, in an axial displacement position corresponding to a chiseling function. 17. A hand power tool as defined in claim 11, wherein said hollow shaft in an end region that is associated with said end portion of said switching shaft that has said outer toothing, has a slaving part that is axially aligned with said outer toothing of said switching shaft, with which slaving part said outer toothing of said switching shaft is bringable into form-locking engagement in axial displacement positions which correspond to functions of drilling and hammer drilling, and is bringable out of engagement in an axial displacement position which corresponds to vario-lock or chiseling function. 18. A hand power tool as defined in claim 17, wherein said slaving part is formed as an internal toothing. 19. A hand power tool as defined in claim 11, wherein said actuating device on said housing has a rotary actuator that is coaxial with said switching shaft, and a switching member which is axially displaceable by said rotary actuator and which engages said actuating portion of said switching shaft for its axial displacement. 20. A hand power tool as defined in claim 19, wherein said switching member is axially displaceable counter to an action of an axial restoring force. 21. A hand power tool as defined in claim 20; and further comprising a spring which provides said action of said axially restoring force, against which said switching member is axially displaceable. 22. A hand power tool as defined in claim 21, wherein said spring is a compression spring which is located and is operative between said switching member and said housing. 23. A hand power tool as defined in claim 19, wherein said compression spring is located and is operative between said switching member and a bearing flange of said housing. 24. A hand power tool as defined in claim 19, wherein said switching member has a slaving means engaging a slaving means of said actuating portion of said switching shaft in a form-locking manner in an axial direction, and in an axial direction which is opposite to said first mentioned axial direction is displaceable relative to said slaving means of said actuating portion counter to an action of an axial compressing spring serving a purpose of synchronization, that is braced on said switching member and on said switching shaft. 25. A hand power tool as defined in claim 19, wherein said rotary actuator of said actuating device has an obliquely extending end face which said switching member engages with a lug for axial actuation, while said switching member is guided nonrotatably but axially displaceably in said housing. 26. A hand power tool as defined in claim 25, wherein said obliquely extending end face of said actuating device has a substantially groove shaped indentation. 27. A hand power tool as defined in claim 25; and further comprising an arresting member which is associated with said rotary actuator and meshing with said rotary actuator, and in rotary positions corresponding to a hammer drilling and chiseling mode is actuatable by said rotary actuator in a direction of a blockage of rotation of a rotatable functional part that makes bidirectional travel possible. 28. A hand power tool as defined in claim 27, wherein said rotary actuator is formed as a selector wheel, and said arresting member meshes with an outer cam path of said rotary actuator. 29. A hand power tool as defined in claim 11, wherein said actuating device is arranged on a bearing flange, and said rotary actuator is formed as a selector wheel. 30. A hand power tool as defined in claim 1, wherein said wobble gear mechanism is supported with a clearance fit on said hollow shaft and retained axially nondisplaceably between said driving gear wheel on the one hand and said housing on the other hand. 31. A hand power tool as defined in claim 30, wherein said wobble gear mechanism has a wobble body which is supported with said clearance fit on said hollow shaft and retained axially nondisplaceably between said driving gear wheel on the one hand and a gear box of said housing on the other hand. 32. A hand power tool, comprising a housing; a drive motor and a gear mechanism arranged in said housing; a tool receptacle in which a tool is guidable; a gear wheel via which a rotary sleeve is driven in rotation from said drive motor and said gear mechanism and thereby said tool receptacle is driven in rotation; a hammering mechanism located inside said rotary sleeve and drivable translationally via a wobble gear mechanism, said gear mechanism having a driving gear wheel meshing with a motor pinion and arranged on a shaft by which said wobble gear mechanism is drivable to revolve, said shaft being configured as a hollow shaft on which said driving gear wheel is retained nondisplaceably and in a manner fixed against rotation, said wobble gear mechanism being located adjacent to said driving gear wheel on said shaft rotatably and couplably to said hollow shaft, wherein said hollow shaft includes transmission elements supported in radially passable oblong slots, by means of which transmission elements said wobble gear mechanism is couplable with said hollow shaft in a circumferential direction for rotary slaving, wherein said wobble gear mechanism has a wobble body provided on its inner circumferential face with longitudinal recesses with which said transmission elements are meshable for form-locking rotary slaving, and with an encompassing groove in which said transmission elements are capable of revolving freely without a form-locking connection with said wobble gear mechanism, and further comprising a switching shaft which is supported axially displaceably inside said hollow shaft and on its outer circumferential face has an encompassing recess into which said transmission elements, protruding radially inwards past said hollow shaft, engage, said switching shaft being displaceable together with said transmission elements relative to said hollow shaft and said wobble gear mechanism between positions in which said transmission elements mesh in a form-locking manner for rotary slaving with said longitudinal recesses of said wobble gear mechanism, and a position in which said transmission elements engage inside said encompassing groove of said wobble gear mechanism and revolve freely therein.
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