A hand held power tool has a housing, a drive, a mechanical striking mechanism with a striker, a drive element for driving the striker in its striking movement and having at least one curved track with raised and depressed portions, and a sensing element in operative connection with the striker supp
A hand held power tool has a housing, a drive, a mechanical striking mechanism with a striker, a drive element for driving the striker in its striking movement and having at least one curved track with raised and depressed portions, and a sensing element in operative connection with the striker supported on the drive and having a sensing member bringable in operative position with the raised and depressed portions of the curved track.
대표청구항▼
1. A hand-held power tool formed as an impact drilling power tool, comprising a housing; drive means which is drivingly supported in said housing for rotatably driving a tool; a mechanical striking mechanism for a striking operation of a tool in a tool receptacle and having a striker; a drive unit t
1. A hand-held power tool formed as an impact drilling power tool, comprising a housing; drive means which is drivingly supported in said housing for rotatably driving a tool; a mechanical striking mechanism for a striking operation of a tool in a tool receptacle and having a striker; a drive unit through which said striker is drivable in its striking movement, said drive unit having at least one curved track with raised portions and depressed portions extending in an axial direction of the tool; a sensing unit which is in operative connection with said striker and has at least one sensing member which is bringable in operative connection with said raised portions and depressed portions of said curved track, said striker being supported on said drive means, said striker being mounted on an outside of said drive means. 2. A hand held power tool as defined in claim 1, wherein said drive means is supported axially displaceably and has a projection which in direction to said tool receptacle forms an abutment for said striker. 3. A hand held power tool as defined in claim 1, wherein said sensing unit has at least two sensing members which are bringable in operative connection with two such curved tracks. 4. A hand held power tool as defined in claim 1, wherein said at least one said sensing member of said sensing unit is limited in its movement in an idle running position in an axial direction at least to one curved track by an abutment. 5. A hand held power tool as defined in claim 4, wherein said drive means is supported axially displaceable, said abutment being formed by further means which is fixedly arranged on said drive means. 6. A hand held power tool as defined in claim 1; and further comprising at least one spring which is in operative connection with said striker and forms at least one drive element of said sensing unit. 7. A hand held power tool as defined in claim 1, wherein said curved path is displaceably supported against a tensioned spring through said sensing unit. 8. A hand held power tool as defined in claim 1, wherein said drive unit has only one curved track. 9. A hand-held power tool formed as an impact drilling power tool, comprising a housing; drive means which is drivingly supported in said housing for rotatable driving a tool; a mechanical striking mechanism for a striking operation of a tool in a tool receptacle and having a striker; a drive unit through which said striker is drivable in its striking movement, said drive unit having at least one curved track with raised portions and depressed portions extending in an axial direction of the tool; a sensing unit which is in operative connection with said striker and has at least one sensing member which is bringable in operative connection with said raised portions and depressed portions of said curved track, said striker being supported on said drive means, said striker being mounted on an outside of said drive means, said drive means being supported axially displaceably and having a projection which in direction to a receptacle forms an abutment for said striker; and a cup-shaped sleeve, said curved track being arranged on said cup-shaped sleeve, said projection being arranged inside said sleeve. 10. A hand-held power tool formed as an impact drilling power tool, comprising a housing; drive means which is drivingly supported in said housing for rotatably driving a tool; a mechanical striking mechanism for a striking operation of a tool in a tool receptacle and having a striker; a drive unit through which said striker is drivable in its striking movement, said drive unit having at least one curved track with raised portions and depressed portions extending in an axial direction of the tool; a sensing unit which is inoperative connection with said striker and has at least one sensing member which is bringable in operative connection with said raised portions and depressed portions of said curved track, said striker being supported on said drive means, sai d striker being mounted on an outside of said drive means, said drive means being a shaft, at least a part of said sensing unit being non rotatably connected with said drive means and drivable directly from said drive means. 11. A hand-held power tool formed as an impact drilling power tool, comprising a housing; drive means which is drivingly supported in said housing for rotatably driving a tool; a mechanical striking mechanism for a striking operation of a tool in a tool receptacle and having a striker which is hollow and surrounds said drive means; a drive unit through which said striker is drivable in its striking movement, said drive unit having at least one curved track with raised portions and depressed portions extending in an axial direction of the tool; a sensing unit which is in operative connection with said striker and has at least one sensing member which is bringable in operative connection with said raised portions end depressed portions of said curved track, said striker being supported on said drive means, said striker being mounted on an outside of said drive means.
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이 특허에 인용된 특허 (11)
Miescher Stefan,LIX ; Binder Gerhard,ATX, Device for transmitting pulsed axial percussions to a bore-forming tool.
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