| 摘要 |
A wheel (2) includes: a first wheel half (21) having a disk portion (211) formed with a central hole (213) that is defined by a hole-defining wall (2130), and a rim (212) extending from a periphery of the disk portion (211) ; and a second wheel half (22) having a disk portion (221) connected to the disk portion (211) of the first wheel half (21), and a rim (222) extending from a periphery of the disk portion (221) of the second wheel half (22). The disk portion (221) of the second wheel half (22) is formed with a middle hole (224) and a central bushing (223) that is bent from a periphery of the middle hole (224) and that protrudes axially into the central hole (213) in the disk portion (211) of the first wheel half (21) to contact intimately the hole-defining wall (2130) of the central hole (213).
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