External force measurement system, measurement method and electrically assisted bicycle
AssigneeTQ-Systems GmbH
InventorHeinz Hornung
Life of this patent
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Abstract
The external force measurement unit comprises a load cell with a support ring, wherein a first flap and a second flap are arranged on the support ring, wherein the second flap is arranged opposite to the first flap on the support ring, wherein each flap is arranged in a radial direction to the outside of the outer ring, and a first flap end and a second flap end being arranged at respective ends of the first flap and the second flap. A second aspect concerns a measuring method for measuring an external force with an external force measurement unit comprising a load cell, which receives a spindle. A third aspect concerns an electrically assisted bicycle comprising an external force measurement unit.
Claims19
An external force measurement unit for measuring an external force applied to a spindle, the external force measurement unit comprising:
- a load cell comprising:
- a support ring;
- a first flap arranged on the support ring,
- a second flap arranged opposite to the first flap on the support ring, wherein each of the first flap and the second flap is arranged in a radial direction towards an outside of the support ring, and
- a first bearing support adapted to take up a first bearing in a first bearing seat, wherein the first bearing is adapted to take up a rotating spindle,
- a first strain gauge arranged on the first flap,
- a second strain gauge arranged on the second flap, and
- an evaluation unit for measuring a resistance of the first strain gauge and a resistance of the second strain gauge, wherein the resistance of the first strain gauge is measured separately from the resistance of the second strain gauge.
Dependencies are inferred from the claim text.