Headrest-attached vehicle seat

A headrest-attached vehicle seat comprising:

• a seat back;
• and
• a headrest which is provided over the seat back, said headrest including:
• a headrest body having a frontal surface which is adapted to support a back of a passenger's head;
• a lateral shaft which extends in a lateral direction through the headrest body, said lateral shaft being provided on the headrest body above a middle in an up-and-down direction of the headrest body;
• a neck-support portion which extends in the lateral direction and is provided on a lower side of the headrest body, said neck-support portion has a frontal surface, positioned beneath said frontal surface of the headrest body so that said neck support portion supports the back of the passenger's neck from a direction, which is the same direction from which the headrest body supports the back of the passenger's head;
• a turning arm which connects at least one end of said neck-support portion with said lateral shaft in such a manner that said neck-support portion is rotatable with respect to said headrest body around an axis of said lateral shaft between a rear-end position and a front-end position, said turning arm extends from the lateral end of the neck-support portion along a lateral side of the headrest, if seen from ahead, when the neck-support portion is in its rearmost position;
• and said turning arm being supported on the lateral shaft, so as to be united and turned with the neck-support portion;
• and
• a position holding means for holding an angular position of the neck-support portion at any desired angle position with respect to the headrest body between said rear-end position and said front-end position so that the neck-support portion provides a support to the back of the occupant's neck,
• wherein the frontal surface of the headrest body is substantially on the same plane with the frontal surface of the neck-support portion when the neck-support portion is in the rear end position.

A headrest-attached vehicle seat comprising:

• a seat back;
• and
• a headrest which is provided over the seat back, said headrest including:
• a headrest body having a frontal surface which is adapted to support a back of a passenger's head;
• a lateral shaft which extends in a lateral direction through the headrest body, said lateral shaft being provided on the headrest body above a middle in an up-and-down direction of the headrest body;
• a neck-support portion which extends in the lateral direction and is provided on a lower side of the headrest body, said neck-support portion has a frontal surface, positioned beneath said frontal surface of the headrest body so that said neck support portion supports the back of the passenger's neck from a direction, which is the same direction from which the headrest body supports the back of the passenger's head;
• a pair of left and right turning arms, each of which has a lower end, said lower end of each of said turning arms, is connected to a corresponding one lateral end of said neck-support portion and an opposite end of each of said turning arms is mounted on said lateral shaft in such a manner that said neck-portion, together with said turning arm pair, is rotatable with respect to said headrest body around an axis of said lateral shaft between a rear-end position and a front-end position;
• and
• a position holding means for holding an angular position of the neck-support portion at any desired angle position with respect to the headrest body between said rear-end position and said front-end position so that the neck-support portion provides a support to the back of the occupant's neck and wherein the frontal surface of the headrest body is substantially on the same plane with the frontal surface of the neck-support portion so as to support the back side of the occupant's head when the neck-support portion is in the rear end position.

A headrest-attached vehicle seat comprising:

• a seat back;
• and
• a headrest which is provided over the seat back, said headrest including:
• a headrest body having a frontal surface for supporting from a rear direction a back of a head of a passenger sitting on the vehicle seat facing a forward direction of the vehicle;
• a lateral shaft, which extends in a lateral direction through the headrest body, said lateral shaft being provided on the headrest body above a middle in an up-and-down direction of the headrest body;
• a neck-support portion which extends in the lateral direction and is provided on a lower side of the headrest body, said neck-support portion has a frontal surface, positioned beneath said frontal surface of the headrest body said frontal surface of the neck support portion supports from said rear direction the back of the neck of the passenger sitting on the vehicle seat facing the forward direction of the vehicle;
• a turning arm which connects at least one lateral end of said neck-support portion with said lateral shaft in such a manner that said neck-support portion is rotatable with respect to said headrest body around an axis of said lateral shaft between a rear-end position and a front-end position, said turning arm extends from the lateral end of the neck-support portion along a lateral side of the headrest, if seen from ahead, when the neck-support portion is in its rearmost position and said turning arm being supported on the lateral shaft, so as to be united and turned with the neck-support portion;
• and
• a position holding means for holding an angular position of the neck-support portion at any desired angle position with respect to the headrest body between said rear-end position and said front-end position so that the neck-support portion provides a support to the back of the occupant's neck;
• wherein the frontal surface of the headrest body is substantially on the same plane with the frontal surface of the neck-support portion when the neck-support portion is in the rear end position.

A headrest-attached vehicle seat comprising:

• a seat back;
• and
• a headrest which is provided over the seat back, said headrest including:
• a headrest body having a frontal surface which is adapted to support a back of a passenger's head;
• a lateral shaft which extends in a lateral direction through the headrest body, said lateral shaft being provided on the headrest body above a middle in an up-and-down direction of the headrest body;
• a neck-support portion which extends in the lateral direction and is provided on a lower side of the headrest body, said neck-support portion has a frontal surface, positioned beneath said frontal surface of the headrest body so that said neck support portion supports the back of the passenger's neck from a direction, which is the same direction from which the headrest body supports the back of the passenger's head;
• the frontal surface of the neck-support portion is curved, so that both end sides of the neck-support portion in the seat-width directions protrude forward from a middle part thereof;
• a turning arm which connects at least one lateral end of said neck-support portion with said lateral shaft in such a manner that said neck-support portion is rotatable with respect to said headrest body around an axis of said lateral shaft between a rear-end position and a front-end position;
• and
• a position holding means for holding an angular position of the neck-support portion at any desired angle position with respect to the headrest body between said rear-end position and said front-end position so that the neck-support portion provides a support to the back of the occupant's neck.