Bicycle trainer
A bicycle trainer including folding legs and a vertically adjustable frame member supporting an axle and cassette where a rider mounts the rear frame, such as dropouts, of a conventional bicycle with the rear wheel removed. The trainer includes a flywheel with a magnetic brake assembly controlled through an open protocol and configured to receive wireless transmitted signals from an app running on a smart phone or other such applications. The flywheel assembly also includes a bracket coupling the magnetic brake with a frame. A strain gauge is mounted on the bracket to detect torque, which is used to calculate a rider's power while using the trainer.
1. A cycling trainer to be used with a bicycle comprising:
a frame assembly supporting a flywheel assembly comprising a magnetic brake assembly and a flywheel member including a flywheel axle, the flywheel assembly supported on the frame assembly, the magnetic brake assembly rotationally fixed and coupled with a tubular member coaxial with the flywheel axle such that the flywheel member spins relative to the rotationally fixed magnetic brake assembly.
2. The cycling trainer of claim 1 , the frame assembly further supporting an axle to which the bicycle with a rear wheel removed may be connected to operably connect the bicycle to the bicycle trainer; and the flywheel member coupled with the axle such that the flywheel member spins relative to the rotationally fixed magnetic brake assembly when a rider is pedaling a bicycle connected with the axle.
3. The cycling trainer of claim 1 , wherein the bicycle is operably coupled with the cycling trainer to drive the flywheel member.
4. The cycling trainer of claim 1 wherein the magnetic brake assembly is an electromagnetic brake assembly further comprising a plurality of electromagnetic members mounted on a core, the electromagnetic members controllable to generate a magnetic field that magnetically couples with the flywheel member.
5. The cycling trainer of claim 4 wherein each electromagnetic member of the plurality of electromagnetic members is each equidistantly spaced about the core.
6. The cycling trainer of claim 5 wherein each electromagnetic member of the plurality of electromagnetic members comprises a T-shaped portion of the core extending radially from an annular main body and a conductor is wound about the T-shaped portion.
7. The cycling trainer of claim 4 wherein there are six electromagnetic members.
8. The cycling trainer of claim 1 wherein the magnetic brake assembly and the flywheel member are rotationally supported relative to a common axis, and further comprising a member coupled between the magnetic brake assembly and the frame assembly, the member rotationally fixing the magnetic brake assembly relative to the flywheel member.
9. The cycling trainer of claim 1 further comprising:
a sensor to obtain a rotational velocity; and
a computing element to provide a power value based on the rotational velocity,
wherein a bicycle is operably coupled with the bicycle trainer to drive the flywheel member and the power value is associated with the power of a person pedaling the bicycle.
10. A cycling trainer to be used with a bicycle comprising:
a frame assembly supporting a flywheel assembly comprising a magnetic brake assembly and a flywheel member including a flywheel axle, the flywheel assembly supported on the frame assembly, the magnetic brake assembly rotationally fixed and coupled with a tubular member coaxial with the flywheel axle such that the flywheel member spins relative to the rotationally fixed magnetic brake assembly;
a sensor to obtain a rotational velocity; and
a computing element to provide a power value based on the rotational velocity.
11. The cycling trainer of claim 10 wherein the sensor is an optical sensor positioned to detect a pattern on the flywheel assembly to obtain the rotational velocity of the flywheel assembly.
12. The cycling trainer of claim 10 further comprising a strain gauge positioned to determine torque required to rotate the flywheel member, wherein the computing element is further to provide the power value based on the rotational velocity and the torque.
13. The cycling trainer of claim 10 further comprising a pulley coupled with the flywheel axle, the pulley receiving a belt configured to be driven from a bicycle operably coupled with the bicycle trainer.
14. The cycling trainer of claim 10 , wherein the frame assembly further supports an axle to which the bicycle with a rear wheel removed may be connected to operably connect the bicycle to the cycling trainer, the flywheel member coupled with the axle such that the flywheel member spins relative to the rotationally fixed magnetic brake assembly when a rider is pedaling the bicycle connected with the axle.
15. The cycling trainer of claim 10 , wherein a bicycle is operably coupled with the cycling trainer to drive the flywheel member and the power value is associated with the power of a person when the person is pedaling the bicycle.
16. The cycling trainer of claim 10 , wherein the magnetic brake assembly is an electromagnetic brake assembly, the computing element configured to process a wirelessly transmitted signal from a remote device to control the electromagnetic brake assembly.
17. The cycling trainer of claim 16 wherein the wireless transmitted signal comprises a power setting.
18. The cycling trainer of claim 10 further comprising a tubular member coaxial with the flywheel axle, the magnetic brake assembly operably coupled with the tubular member.