Hand-held pulling and compression device
The invention relates to a hand-held pulling and compression device for driving interchangeable tools, with a drive unit with a battery-operated electric motor, a screw drive with a threaded spindle mounted rotatably on a housing body and a threaded nut mounted rotatably on the threaded spindle and non-rotatably on the housing body via a bearing unit, and a coupling unit connected to a tool holder for transmitting tensile and compressive forces resulting from the direction of rotation of the threaded spindle from the threaded nut to the tool holder. In order to provide a hand-held pulling and compression device that can be used easily and flexibly for different work operations, it is provided that the hand-held pulling and compression device has a switching unit for coupling and decoupling the screw drive from the drive unit.
1 . Hand-held pulling and compression device for driving interchangeable tools, with
a drive unit comprising a battery-operated electric motor,
a screw drive with a threaded spindle mounted rotatably on a housing body and a threaded nut mounted rotatably on the threaded spindle and non-rotatably on the housing body via a bearing unit, and
a coupling unit connected to a tool holder for transmitting tensile and compressive forces resulting from the direction of rotation of the threaded spindle from the threaded nut to the tool holder,
the device including a switching unit for coupling and decoupling the screw drive from the drive unit, wherein the threaded spindle is designed as a hollow spindle for receiving a rotating shaft connected to the electric motor.
2 . Hand-held pulling and compression device according to claim 1 , wherein the switching unit is adjustable between a coupling state connecting the threaded spindle to the drive unit and a decoupling state separating the threaded spindle from the drive unit.
3 . Hand-held pulling and compression device according to claim 1 , wherein the switching unit has a coupling element connecting the threaded spindle in the coupling state to the drive unit.
4 . Hand-held pulling and compression device according to claim 3 , wherein the switching unit is designed and/or adjusted on the housing body in such a way that the adjustment between the coupling state and the decoupling state is effected by adjusting the drive unit and/or the coupling element relative to the screw drive.
5 . Hand-held pulling and compression device according to claim 3 , wherein the coupling element has at least one coupling section for positive connection to the threaded spindle in the coupling state.
6 . Hand-held pulling and compression device according to claim 3 , wherein the switching unit has an adjustment element for adjusting the coupling element between a coupling position assigned to the coupling state and a decoupling position assigned to the decoupling state.
7 . Hand-held pulling and compression device according to claim 6 , wherein the adjustment element is designed such that the coupling element can be adjusted mechanically or electro-mechanically between the coupling position and the decoupling position in order to adjust the switching unit from the coupling state to the decoupling state.
8 . Hand-held pulling and compression device according to claim 3 , wherein the switching unit has a guide for the adjustment element, which is designed in such a way that the coupling element is moved in the longitudinal direction of the threaded spindle for adjustment between the coupling position and the decoupling position.
9 . Hand-held pulling and compression device according to claim 1 , wherein the switching unit is arranged in the longitudinal direction of the threaded spindle between the screw drive and the drive unit.