Scissor retractable headrest

A retractable headrest, comprising:

• a plate shaped support embedded within a seatback;
• a scissor linkage exhibiting a plurality of interconnecting link arms pivotally secured at one end to said support and at the other end to a carriage linearly displaceable along said support, said linkage exerting an extending bias against said carriage;
• a rivet disposed at an overlapping intermediate location of a selected pair of said link arms for travel along a linear extending channel defined in said support;
• a headrest support rod connected to said carriage and extending from the seatback;
• and
• a pawl pivotally supported proximate a base end of the scissor linkage, said pawl including a catch location which is biased in a first direction to engage a first pin extending from a location of said plate shaped support proximate a base link arm selected from said plurality of interconnecting link arms;
• a first cable connected to said pawl and a second cable connected to said carriage;
• and
• during rotation of the seatback from an upright design position to a forward dump position, actuation of said first cable pivoting said pawl against its bias to unseat said catch location from said pin, concurrent actuation of said second cable exerting a pulling force to compress said scissor linkage to a retracted position.

A retractable headrest incorporated into a pivotal seatback, said headrest comprising:

• a plate shaped support embedded within a seatback;
• a scissor linkage exhibiting a plurality of interconnecting link arms pivotally secured at one end to said support and at the other end to a carriage linearly displaceable along said support;
• a linearly displaceable rivet disposed at an overlapping intermediate location of a selected pair of said link arms for travel along a linear extending channel defined in said support;
• a clock spring secured about said linearly displaceable pin and exhibiting a curled end engaging a selected of said overlapping link arms such that said linkage is biased in an extensible direction;
• a headrest support rod connected to said carriage and extending from the seatback for receiving a headrest bun;
• a pawl pivotally supported proximate a base end of the scissor linkage, said pawl including a catch location which is biased in a first direction to engage a first pin extending from a location of said plate shaped support proximate a base link arm selected from said plurality of interconnecting link arms;
• a first cable extending from a first remote location and connected to said pawl, a second cable extending from a second remote location and connected to said carriage;
• and
• during rotation of the seatback from an upright design position to a forward dump position, actuation of said first cable pivoting said pawl against its bias to unseat said catch location from said pin, concurrent actuation of said second cable exerting a pulling force to compress said scissor linkage to a retracted position.