Seat back interlocking ottoman device and vehicle seat

1. A seat back interlocking ottoman device for a vehicle seat configured such that an angle of a seat back relative to a seat cushion can be adjusted and an ottoman is provided at a front side of the seat cushion, the seat back interlocking ottoman device comprising:

an interlocking mechanism configured to interlock the seat back and the ottoman so as to retract the ottoman to a retracted position below the front side of the seat cushion when the seat back is located at a regular usage position suitable for sitting and to move the ottoman from the retracted position to an extended position at the front side of the seat cushion to thus support a leg part of a passenger from below when the seat back is tilted rearwards from the regular usage position;

a support member configured to support a part of the interlocking mechanism at a predetermined position when the ottoman is moved while the ottoman is interlocked with the seat back, and

an operating lever which is connected to the support member to move the support member, thereby moving the ottoman between the retracted position and the extended position independently from the interlocking operation between the seat back and the ottoman;

wherein the part of the interlocking mechanism is configured to be operable by an operation independent of a movement of the seat back, such that the ottoman can be moved to a desired position between the retracted position and the extended position independent of the movement of the seat back,

wherein a position of the support member is configured to be moved by a force larger than a force applied at the interlocking mechanism, and

wherein the ottoman is configured to be moved between the retracted position and the extended position by a movement of the support member.

2. A vehicle seat comprising:

a seat cushion;

a seat back configured such that an angle relative to the seat cushion can be adjusted;

an ottoman provided at a front side of the seat cushion to be rotatable;

an interlocking mechanism configured to interlock the seat back and the ottoman so as to retract the ottoman to a retracted position below the front side of the seat cushion when the seat back is located at a regular usage position suitable for sitting and to move the ottoman from the retracted position to an extended position at the front side of the seat cushion to thus support a leg part of a passenger from below when the seat back is tilted rearwards from the regular usage position;

a support member configured to support a part of the interlocking mechanism at a predetermined position when the ottoman is moved while the ottoman is interlocked with the seat back, and

an operating lever which is connected to the support member to move the support member, thereby moving the ottoman between the retracted position and the extended position independently from the interlocking operation between the seat back and the ottoman;

wherein the part of the interlocking mechanism is configured to be movable independently from a movement of the seat back such that the ottoman can be moved between the retracted position and the extended position independently from the interlocking between the seat back and the ottoman,

wherein a position of the support member is configured to be moved by a force larger than a force applied at the interlocking mechanism, and

wherein the ottoman is configured to be moved between the retracted position and the extended position by a movement of the support member.

3. A seat back interlocking ottoman device for a vehicle seat configured such that an angle of a seat back relative to a seat cushion can be adjusted and an ottoman is provided at a front side of the seat cushion, the seat back interlocking ottoman device comprising:

an interlocking mechanism configured to interlock the seat back and the ottoman so as to retract the ottoman to a retracted position below the front side of the seat cushion when the seat back is located at a regular usage position suitable for sitting and to move the ottoman from the retracted position to an extended position at the front side of the seat cushion to thus support a leg part of a passenger from below when the seat back is tilted rearwards from the regular usage position; and

an operating lever configured to operate the ottoman independent of the movement of the seat back,

wherein a part of the interlocking mechanism is configured to be operable by an operation independent of a movement of the seat back, such that the ottoman can be moved to a desired position between the retracted position and the extended position independent of the movement of the seat back,

wherein the operating lever overtakes control of the ottoman from the interlocking mechanism by applying a first force on the part of the interlocking mechanism, and

wherein the first force is larger than a second force applied on the part of the interlocking mechanism by the seat back.

4. A vehicle seat comprising:

a seat cushion;

a seat back configured such that an angle relative to the seat cushion can be adjusted;

an ottoman provided at a front side of the seat cushion to be rotatable;

an interlocking mechanism configured to interlock the seat back and the ottoman so as to retract the ottoman to a retracted position below the front side of the seat cushion when the seat back is located at a regular usage position suitable for sitting and to move the ottoman from the retracted position to an extended position at the front side of the seat cushion to thus support a leg part of a passenger from below when the seat back is tilted rearwards from the regular usage position; and

an operating lever configured to operate the ottoman independent of the movement of the seat back,

wherein a part of the interlocking mechanism is configured to be movable independently from a movement of the seat back such that the ottoman can be moved between the retracted position and the extended position independently from the interlocking between the seat back and the ottoman,

wherein the operating lever overtakes control of the ottoman from the interlocking mechanism by applying a first force on the part of the interlocking mechanism, and

wherein the first force is larger than a second force applied on the part of the interlocking mechanism by the seat back.