Chair-type massage machine

Abstract

A chair-type massage machine includes a backrest for the back of the user to bear on, a seat for the user to sit in, and a reclining mechanism for pivotally moving the backrest and the seat. The reclining mechanism includes a single drive source to recline the seat while permitting the user to hold a related posture, the drive source being coupled to the backrest and the seat by a link assembly. The link assembly is operable to pivotally move the backrest from a raised position to a reclined position via an intermediate position by operating the drive source, the seat being tiltable to raise a front end thereof when the backrest is pivotally moved from the raised position to the intermediate position, the seat being tiltable to lower the raised front end thereof when the backrest is pivotally moved from the intermediate position to the reclined position.

1 . A chair-type massage machine wherein a base is provided with a backrest for the back of the user to bear on, a seat for the user to sit in, and a reclining mechanism for pivotally moving the backrest and the seat, the massage machine being characterized in that:
 the reclining mechanism comprises a single drive source, the drive source being coupled to one of the backrest and the seat, the backrest or the seat having the drive source coupled thereto being pivotally movably supported,   a link being pivoted at one end thereof to the backrest or the seat having the drive source coupled thereto, the link having the other end pivoted to a cam member supported by the base, the cam member being provided at a portion thereof with a cam face in bearing contact with the backrest or the seat not coupled to the drive source,   the drive source being operable to cause the link to rotate the cam member and to pivotally move the backrest from a raised position to a reclined position via an intermediate position, the cam face being so shaped as to tilt the seat to raise a front end thereof when the backrest is pivotally moved from the raised position to the intermediate position and as to tilt the seat to lower the raised front end thereof when the backrest is pivotally moved from the intermediate position to the reclined position.