Patent ID: 9327627
Filing Date: 2016-05-03
CPC Classification: B60N

Claim Text:
1. An unlocking mechanism provided in a headrest, said headrest including: a covering element; and an inclination adjustment mechanism operable for adjustment of inclination of the headrest, said inclination adjustment mechanism including a stationary gear and a lock gear movable for engagement with and disengagement from said stationary gear, said unlocking mechanism comprising: a three-dimensional frame provided within the headrest, said three-dimensional frame having an inner surface facing an inside thereof and an outer surface facing an outside thereof said inclination adjustment mechanism disposed within said three-dimensional frame; a cylindrical element formed integrally with said three-dimensional frame so as to project outwardly from said outer surface of the three-dimensional frame, said cylindrical element having a through-bore defined therein, said through-bore communicating between the inside of the three-dimensional frame and the outside thereof; a guide element formed in said inner surface of said three-dimensional frame so as to project inwardly of the three-dimensional frame; wherein said covering element is affixed on said three-dimensional frame, such that said through-bore of said cylindrical element opens in the covering element; a lever element disposed within said three-dimensional frame and operatively connected with said lock gear, said lever element including: a connecting hole defined in said connecting portion; said lever element being at said elongated guide hole element slidably engaged with said guide element, thereby maintaining said connecting hole of the lever element in a coaxial relation with said through-bore of said cylindrical element; a push button including a connecting element formed to project outwardly therefrom, said connecting element including a resilient anchor region having an outer shape slightly larger than said connecting hole of said lever element, said resilient anchor region being capable of being resiliently squeezed to pass through said connecting hole and also capable of resilient recovery of the shape thereof subsequent to being resiliently squeezed and passed through the connecting hole; said push button being slidably accommodated in said cylindrical element and securely connected at the connecting element thereof with said connecting portion of said lever element by being slidingly inserted in said through-bore of the cylindrical element such that said resilient anchor region of the push button is resiliently squeezed in and passed through said connecting hole of said lever element and subsequently recovers said shape thereof resiliently, so that said connecting element of the push button is securely connected via said resilient anchor region thereof with said connecting portion of the lever element; and said push button being normally exposed partially in said cylindrical element as well as in said covering element.