Robert Boschgmbh

Robert Bosch Gmbh

Sim Teik Yeoh

Manfred Lutz

Florian Esenwein

Wolfgang Hirschburger

Chi Hoe Leong

Kah Hooi Tan

Ju-Lien Tan

Chuan Cheong Yew

Moritz Stiefel

Heiko Roehm

Guenter Lohr

Steffen Wuensch

Falk Herrmann

Sven Kageler

Siew Yuen Lee

Mohsein Wan

Abdul Aziz Zulfikar

Chun Chee Loh

Chin Aun Ng

Joseph Siang Choon Lim

Rahman Khiri Abd

HuoyHuoy Lim

Jack Chai

Chian Wah Lam

Raman Khiri Abd

Huoyhuoy Lim

A method for controlling an electric motor of a power tool having a receptacle for a tool, at least a current of the electric motor and/or a rotation speed of the electric motor during an impact operating mode of the electric motor being detected as a parameter, a driving time of the electric motor for the impact operating mode being specified as a function of the detected parameter. A method is also described for controlling an electric motor of a power tool having a receptacle for a tool for unscrewing a screw from a mating part.

Method for controlling an electric motor of a power tool

A percussion mechanism device, in particular for an impact wrench, includes a drivable drive shaft that has at least one guide groove, an output shaft, and a percussion unit that includes an anvil coupled with the output shaft in a rotationally fixed manner, a hammer, and at least one ball. The hammer is supported via the at least one ball along the at least one guide groove on the drive shaft and includes an at least regionally concavely curved ball guidance area that has an axial clearance from the at least one ball at a radially innermost point that is greater than a radial clearance between the at least one ball and a radially innermost point of a concave ball guidance area of the at least one guide groove.

Percussion mechanism device, in particular for an impact wrench

In an impact driver including an impact mechanism for percussive driving of an output drive shaft on which is provided a tool receptacle for receiving an inserted tool, the tool receptacle is embodied as a clamping chuck, a permanent connection being embodied between the clamping chuck and the output drive shaft in order to prevent at least tool-free detachment of the clamping chuck from the output drive shaft.

Impact driver having an impact mechanism

In a handheld power tool having a drive motor operable via a manual switch for driving a drive body which is associated with a mechanical percussion mechanism and coupled to a percussion member for driving an output shaft provided with a tool receptacle, and an operating mode switchover element which is designed to switch over between a normal operation and a percussion operation of the percussion mechanism and which is coupled to the drive body being associated with the drive body, an operating device is provided for operating the operating mode switchover element which is coupled to the manual switch and which is designed to enable a switchover of the operating mode switchover element between normal operation and the percussion operation of the percussion mechanism by operating the manual switch.

Handheld power tool having a drive motor operable via a manual switch

A handheld machine tool having an output shaft on which a tool holding fixture is developed, which has a multi-faced inner receptacle and a multi-faced outer receptacle, the multi-faced inner receptacle to connect to a tool insert, which can be locked using a locking device assigned to the tool holding fixture; the locking device having a locking sleeve which is displaceable for unlocking the tool insert against a spring force applied by an associated spring element in an axial direction facing away from the handheld machine tool, from a locking to an unlocking position, the locking sleeve has an operating element and a holding element connected to each other via a threaded connection, the holding element driven by the associated spring element in the direction of the locking position of the locking sleeve and the operating element enables displacement of the locking sleeve from the locking to the unlocking position.

Handheld machine tool

A machine tool device, particularly a hand-held machine tool device, includes at least one screw that is configured to secure at least one metal component to at least one additional component in a form-fitting manner. The machine tool further includes an electrical insulating unit that is configured to prevent the conduction of current at least between the metal component and the screw.

Machine tool device

A hand-held power tool includes a housing with a tool fitting for receiving an insertion tool, and at least one illuminating element for illuminating the working area of the hand-held power tool; wherein the at least one illuminating element is located in the region of the tool fitting.

Hand-held power tool

Illuminating hand-held power tool

A housing device for a hand-held power tool has at least one see-through region composed of a transparent plastic, and having an interior side configured as a carrier for an element selected from the group consisting of an information element, a signal element, and both; and also a hand-held power tool is provided with such a housing device.

Housing device for hand-held power tool

A cordless screwdriver, having a housing () with a pistol grip () with an ON/OFF button () and a rechargeable battery () inserted into it, in particular fixedly and with charging contact tongues () associated with the battery (), is made safer and more convenient by providing that by means of the toggle switch (), extending in elongated fashion over the inside of the pistol grip () and in particular pivotably supported, a plurality of power circuits of the cordless screwdriver () are interruptable and closable over the actuation stroke of the toggle switch successively independently of one another.

Cordless screwdriver

Growing community of inventors

Gelugor Penang, Malaysia

Sim Teik Yeoh