Bottom bracket with a torque sensor unit
AssigneeSchaeffler Technologies AG & Co. KG
InventorsStefan Glueck, Michael Pausch, Frank Benkert
Life of this patent
Estimating the term…
Abstract
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.
Claims18
A bottom bracket with a torque sensor unit, comprising:
- at least one pedal crank;
- a shaft which is connected to the at least one pedal crank in a rotationally fixed manner;
- and
- a torque detection apparatus for detecting a torque in a region of the shaft, with the torque detection apparatus comprising a first magnetization and a sensor which detects a change in the first magnetization on a basis of torque introduced into the shaft,
- wherein the shaft is in the form of a hollow shaft, and in that the first magnetization is arranged at least on a portion of the shaft, and
- wherein the sensor is arranged on a unit that is one of accommodated at least partially inside the shaft.
The bottom bracket of darn 9, wherein the first sensor and the second sensor each comprise two coils as the magnetic detection means.
A bottom bracket with a torque sensor unit, comprising:
- a first pedal crank and a second pedal crank;
- a shaft which is connected to each of the first pedal crank and the second pedal crank in a rotationally fixed manner;
- and
- a torque detection apparatus for detecting a torque in a region of the shaft, with the torque detection apparatus comprising a first magnetization, a second magnetization, and magnetic detection means, which detects a change in the first magnetization and the second magnetization on a basis of torque introduced into the shaft,
- wherein the shaft is in the form of a hollow shaft, and in that the first magnetization and the second magnetization are arranged at least on a portion of the shaft,
- wherein the magnetic detection means are arranged so that torque introduced by the first pedal crank, torque introduced by the second pedal crank, and an overall torque can be determined from the magnetic detection means, and
- wherein the unit on which the sensor is arranged which can be screwed to a bearing receptacle in which the shaft is located.
A bottom bracket with a torque sensor unit, comprising:
- a first pedal crank;
- a second pedal crank;
- a shaft connected to each of the first pedal crank and the second pedal crank in a rotationally fixed manner;
- a torque detection apparatus comprising a first magnetization arranged in a first region of the shaft and a second magnetization arranged in a second region of the shaft, which is at an axial distance from the first region;
- a first sensor detecting a change in the first magnetization on a basis of torque introduced in the shaft and a second sensor detecting a change in the second magnetization on a basis of torque introduced in the shaft,
- wherein the first sensor and the second sensor are arranged so that torques introduced by the first pedal crank, torque introduced by the second pedal crank, and an overall torque can be determined from the first sensor and the second sensor.
Dependencies are inferred from the claim text.