Schaeffler Technologies Ag & Co .kg

Frank Benkert

Jens Heim

Stefan Glueck

Michael Pausch

Markus Neubauer

Bernd Wittmann

Stefan Glück

Horst Brehm

Thomas Rink

Jürgen Gierl

Matthias Sperber

Armin Gerner

Werner Hehn

Klaus Drescher

Philipp Horning

Bert Rosenheinrich

Philipp Hörning

Alexander Grehn

Claus-Dieter Schilling

Maximilian Escher

Thomas Schneider

A bottom bracket unit including a bottom bracket axle (), at least one bearing () that receives the bottom bracket axle () in a rotatable manner, and an optical detection unit (), by which a rotational speed of the bottom bracket axle () can be detected. The optical detection unit () measures at least one signaling device () that is rotationally fixed to the bottom bracket axle (). The aim of the invention is to provide a bottom bracket unit that can also detect the rotational direction of the bottom bracket axle in addition to the rotational speed of the axle. This is achieved in that the optical detection unit () has two optical sensors (), with one of these sensors () providing a signal that is phase-shifted with respect to the other sensor () having a fixed phase difference, in particular with a phase difference of 90&#xb0;.

Bottom bracket unit for a bicycle

A bearing ring, in particular of a rolling bearing or a sliding bearing, including a body made of a magnetostrictive material, having a first raceway () and a second, axially spaced apart, raceway () and a permanent magnetization () which is impressed into the material of the body between the raceways () and which runs around an axis of rotation () of the body. According to the invention, the bearing ring achieves the object of improving the structural integration of a torque sensor into a bearing, which torque sensor generates a torque-dependent magnetic field by utilizing the inverse magnetostrictive effect.

Bearing ring for a bearing, in particular for a rolling or sliding bearing

A rolling bearing having a permanently excited first generator () which is arranged in an intermediate space between two bearing rings which are rotatable relative to one another, the first generator having a primary part and a secondary part and generating a first generator voltage when it operates, the secondary part has permanent magnets () which are arranged with alternating polarity on the circumference of one of the bearing rings at least in sections. The rolling bearing includes a second generator (), and the first generator voltage serves for the supply of energy to a sensor arrangement and/or actuator arrangement integrated in the bearing, whereas the second generator outputs a voltage signal for position determination and rotational speed measurement. A method for the energy management of a rolling bearing of this type is also provided.

Rolling bearing having an integrated generator and method for the energy management of a rolling bearing of said type

A bottom bracket with a torque sensor unit. The bottom bracket has at least one pedal crank, a shaft that is non-rotatably connected to the at least one pedal crank, and a torque detection device for detecting a torque in the region of the shaft. The torque detection device has a first magnetization and a sensor which detects a change of the first magnetized due to a torque passed into the shaft. The bottom bracket allows a reliable and fast detection of torques, especially of the different torques of both pedal cranks. Utilizing the shaft, which is designed as a hollow shaft and the first magnetization, which is arranged on at least one section of the shaft.

Bottom bracket with a torque sensor unit

A bottom bracket, which has a shaft, a first pedal crank, which is connected in a rotationally fixed manner to the shaft, a second pedal crank, which is connected in a rotationally fixed manner to the shaft, and a chainring carrier, which is connected to the shaft. The object of providing a bottom bracket with a chainring carrier that is easy to assemble is achieved by the chainring carrier being connected in a rotationally fixed manner to a chainring shaft and by the chainring shaft being connected in a rotationally fixed manner to the shaft.

Bottom bracket

Growing community of inventors

Waigolshausen, Germany

Frank Benkert