| 摘要 |
An in-hub braking system for a wheelchair comprises a brake shell fixed against rotation movement in relation to a wheelchair frame. A wheelchair drive wheel having a hub supporting a braking system is supported for rotational movement in relation to the brake shell. A lever is operatively connected to the braking system for activating that braking system to cause the braking system to frictionally engage the brake shell. A push rim, which when urged forward, rotates the drive wheel in a forward direction to propel the wheelchair in a forward direction. When urged rearward together with the drive wheel, the push rim rotates with the drive wheel in a rearward direction to propel the wheelchair in a rearward direction. The push rim is operatively connected to the lever so that the push rim, which when urged rearward independent of the drive wheel, operates the lever to activate the braking system to frictionally engage the brake shell. |
