Patent ID: 7255401
Filing Date: 2007-08-14
Classification: B60N

Abstract:
1. An automobile headrest comprising: a first headrest stay and a second headrest stay that support the headrest; a first headrest bush and a second headrest bush in which the first headrest stay and the second headrest stay are inserted and supported respectively; a height adjusting mechanism that is attached to the first headrest bush at a position adapted to correspond to an upper end portion of a seat back; and a headrest removal prevention device that is built in the second headrest bush at a position adapted to be inside the seat back and includes a locking mechanism for preventing the headrest from being removed and an unlocking mechanism for unlocking the headrest, wherein the first headrest stay is provided with a height adjusting notch, wherein the second headrest stay is provided with a removal prevention notch, wherein the height adjusting mechanism is provided with a lock member capable of reciprocating and adapted to abut on the first headrest stay inserted in the first headrest bush due to a resilient force of a spring, and includes a locking mechanism for holding the headrest at a predetermined height through engagement of the lock member with the height adjusting notch of the first headrest stay and an unlocking mechanism for disengaging the lock member from the height adjusting notch through an operation of the lock member against the resilient force of the spring, wherein the headrest removal prevention device is provided with a lock member capable of reciprocating and adapted to abut on the second headrest stay inserted in the second headrest bush due to a resilient force of a spring, wherein the locking mechanism of the headrest removal prevention device prevents the headrest from being removed through engagement of the lock member with the removal prevention notch of the second headrest stay, wherein the unlocking mechanism of the headrest removal prevention device disengages the lock member from the removal prevention notch through an operation of the lock member against the resilient force of the spring, and wherein the height adjusting mechanism and the removal prevention device are formed of the same component and are interchangeable.