| 摘要 |
<p>An asymmetric or off-center bottom bracket assembly (200) suitable for a bicycle frame or other similar wheeled vehicle. According to an embodiment, the bottom bracket assembly (200) comprises a shell or housing (210) having a chain ring section (214) configured for coupling a chain ring and a pedal crank section (212) configured for receiving a pedal crank. Each of the chain ring and the pedal crank sections (214,212) include a receiver for mounting or seating a bearing. According to an embodiment, the bottom bracket assembly (200) is configured to mount the bearing (242) or end of the chain ring section (214) closer to the chain ring than the bearing (240) or end of the pedal crank section (212) to the pedal crank. According to an embodiment, the pedal crank section (212) is configured with a linear dimension greater than the chain ring section (214). According to another embodiment, the pedal crank section and the chain ring section have the same linear dimensions and the bottom bracket assembly is mounted asymmetrically or off-center to the center line of the bicycle frame. According to another embodiment, the bearing mounted in the chain ring section is larger than the bearing mounted in the pedal crank section of the bottom bracket assembly.
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