Abstract: A device for automatically adjusting an angle of a monitor on a vehicle seat back includes: a fixation bracket on a front seat back upper-frame; a first rotation bracket on an upper portion of the fixation bracket; a second rotation bracket on a lower portion of the fixation bracket; a monitor on a front surface of the first rotation bracket; a motor on a bottom surface of the second rotation bracket; an angle adjustment bar integrally combined with a rear surface of the first rotation bracket; a lead screw, whose lower portion is connected to an output shaft of the motor, and whose upper portion passes through the second rotation bracket; and an ascending and descending member having a threaded hole such that the ascending and descending member fastened to the lead screw while being fastened to an end portion of the angle adjustment bar.

Abstract: Disclosed is a headrest having a speaker, the headrest including: a headrest frame having a rear surface to which a driving module is coupled so that the headrest frame is movable forwards, rearwards, or vertically in response to operation of the driving module, the headrest frame having a front surface formed with a mounting space recessed rearwards; a speaker, inserted into the mounting space in the headrest frame, provided with an output portion facing forwards and outputting sound, the speaker having a rear side closed by the headrest frame; a foam pad, mounted on the front surface of the headrest frame so as to cover the headrest frame and the speaker, having formed therein a first through hole outputting sound forwards at a position corresponding to the output portion; and a covering configured to cover the front surface of the foam pad and forming the front exterior of the headrest.

Abstract: A device for automatically adjusting an angle of a monitor on a vehicle seat back includes: a fixation bracket on a front seat back upper-frame; a first rotation bracket on an upper portion of the fixation bracket; a second rotation bracket on a lower portion of the fixation bracket; a monitor on a front surface of the first rotation bracket; a motor on a bottom surface of the second rotation bracket; an angle adjustment bar integrally combined with a rear surface of the first rotation bracket; a lead screw, whose lower portion is connected to an output shaft of the motor, and whose upper portion passes through the second rotation bracket; and an ascending and descending member having a threaded hole such that the ascending and descending member fastened to the lead screw while being fastened to an end portion of the angle adjustment bar.

Abstract: The dial recliner includes a holder and a sector gear and also comprises a brake spring, a cam, a pair of clutch shoes and a spring which are accommodated and supported between the holder and the sector gear. The dial recliner also comprises a housing to maintain a combined state between the holder and the sector gear. The holder has inner teeth of a ring shape at its outer circular part and a boss at its center part to support a shaft. The sector gear has outer teeth to intermesh with the inner teeth of the holder. When intermeshed, the boss of the holder and a shaft hole of the sector gear become eccentric between their centers. The clutch shoe is supported by the brake spring which is elastically held around the boss of the holder so that a circular drifting movement of the clutch shoe can be prevented.

Abstract: The dial recliner includes a holder and a sector gear and also comprises a brake spring, a cam, a pair of clutch shoes and a spring which are accommodated and supported between the holder and the sector gear. The dial recliner also comprises a housing to maintain a combined state between the holder and the sector gear. The holder has inner teeth of a ring shape at its outer circular part and a boss at its center part to support a shaft. The sector gear has outer teeth to intermesh with the inner teeth of the holder. When intermeshed, the boss of the holder and a shaft hole of the sector gear become eccentric between their centers. The clutch shoe is supported by the brake spring which is elastically held around the boss of the holder so that a circular drifting movement of the clutch shoe can be prevented.