| 摘要 |
A headrest stay for supporting a headrest is inserted in a headrest bush and is supported. A height adjusting mechanism is attached to the headrest bush at a position corresponding to an upper end portion of a seat back. A headrest removal prevention device for preventing the headrest from being removed is built in the headrest bush at a position inside the seat back. The height adjusting mechanism and the headrest removal prevention device are formed of the same component.
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