Single-sprocket system for a bicycle trainer

A single-sprocket system for integration into a bicycle trainer, the single-sprocket system comprising:

• a sprocket having teeth about a perimeter of the sprocket, a first planar side, and a second planar side opposite the first planar side, wherein the teeth of the sprocket are configured to engage a chain which may be used to couple a bicycle to the bicycle trainer;
• a first chain guide adjacent the first planar side of the sprocket, wherein the first chain guide is configured to redirect the chain toward the teeth in response to movement of the chain off of the sprocket towards the first planar side;
• a second chain guide adjacent the second planar side of the sprocket, wherein the second chain guide is configured to redirect the chain toward the teeth in response to movement of the chain off of the sprocket towards the second planar side;
• and an insert provided partially within the first chain guide and configured to hold the sprocket in position on an axle of the bicycle trainer;
• wherein the first chain guide comprises a first oblique portion having a first oblique surface about a perimeter of the first oblique portion of the first chain guide, the first oblique surface at least the height of the teeth of the sprocket at a first oblique angle to the sprocket, wherein the first oblique portion is configured to shift the chain to re-engage the teeth of the sprocket when the chain has become disengaged from the teeth of the sprocket.

A single-sprocket system for integration into a bicycle trainer, the single-sprocket system comprising:

• a sprocket having teeth about a perimeter of the sprocket, a first planar side, and a second planar side opposite the first planar side, wherein the teeth of the sprocket are configured to engage a chain which may be used to couple a bicycle to the bicycle trainer;
• a chain guide adjacent the sprocket, wherein the chain guide is configured to redirect the chain toward the teeth of the sprocket in response to movement of the chain to either side of the sprocket;
• and an insert provided partially within the chain guide and configured to hold the sprocket in position on an axle of the bicycle trainer;
• wherein the chain guide comprises a first oblique portion on the first planar side having a first oblique surface at least the height of the teeth of the sprocket about a perimeter of the first oblique portion of the chain guide, the first oblique surface at a first oblique angle to the sprocket, wherein the first oblique portion is configured to shift the chain to re-engage the teeth of the sprocket when the chain has become disengaged from the teeth of the sprocket.