US 9,810,593 B2
Pedaling torque and power measuring device for a bicycle
Pablo Carrasco Vergara, Madrid (ES); David Martinez Garcia, Madrid (ES); Octavio Campos Barroso, Madrid (ES); and Jose Anton Herraiz, Madrid (ES)
Assigned to Rotor Componentes Tecnologicos S.L., Madrid (ES); and Indra Sistemas, S.A., Madrid (ES)
Filed by Rotor Componentes Tecnologicos S.L., Madrid (ES); and Indra Sistemas, S.A., Madrid (ES)
Filed on Jan. 15, 2016, as Appl. No. 14/996,266.
Claims priority of application No. 201530055 (ES), filed on Jan. 19, 2015.
Prior Publication US 2016/0209281 A1, Jul. 21, 2016
Int. Cl. G01L 3/00 (2006.01); G01L 3/10 (2006.01); B62M 3/00 (2006.01); G01L 3/24 (2006.01); B62J 99/00 (2009.01); G01B 7/30 (2006.01)
CPC G01L 3/108 (2013.01) [B62J 99/00 (2013.01); B62M 3/00 (2013.01); B62M 3/003 (2013.01); G01B 7/30 (2013.01); G01L 3/242 (2013.01); B62J 2099/002 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A torque and power measuring device located on a non-drive side cyclist leg, comprising:
a hollow shaft configured in one piece, which connects a first bicycle crank arm and a second bicycle crank arm, wherein the first crank arm is a jointed crank arm relative to a shaft, and the second crank arm is a detachable crank arm;
at least one strain sensor disposed on a surface of said shaft which measures deformation caused by torque on the shaft;
at least one angular position sensor or rotation sensor of the shaft;
a support member housed inside the shaft and moving jointly with it, which supports an electronic control unit configured to receive input signals at least from the abovementioned strain and positioning sensors, to store data, to perform pre-programmed calculation operations with them and to output result signals;
a power supply unit housed inside a support member;
a radiofrequency antenna, located outside the shaft anchored to an outer surface of the jointed crank arm in its corresponding assembly area with the shaft, and wiring connected to the electronic control unit which wirelessly sends the result signals to a signal receiving device;
characterized in that the jointed crank arm is provided with an opening located in the assembly crank end with the shaft, through which antenna wiring passes to outside the shaft.