[Object] To inhibit leg rests from colliding with each other and to allow a leg rest of his/her own seat to operate even in the case where a power source failure or the like occurs. [Solving Means] A seat apparatus according to an embodiment of the present invention includes: a seat body; a control unit; and a setting means. The seat body includes a leg rest. The control unit includes a controller. The controller determines whether the seat body is in a first state in which the seat body does not face a front seat or a back seat of the seat body or a second state in which the seat body faces one of the front seat and the back seat. The controller enables, where the controller has determined that the seat body is in the first state, a tilt operation command for the leg rest to tilt forward, and invalidates, where the controller has determined that the seat body is in the second state, the tilt operation command. The setting means fixes the determination result by the controller to the first state.

A seat device that can easily and reliably achieve the conversion of the state of a seat. A rotation mechanism (40) that rotates the seat about a rotation axis, a sliding mechanism (14) that advances and retracts the seat together with the rotation mechanism (40) from a fixed side, and a drive mechanism (50) that sequentially and directly drives each of the sliding mechanism (14) and the rotation mechanism (40) are included. The drive mechanism (50) includes a power source (51) provided in the fixed side of the seat, and transmission means for directly driving the sliding mechanism (14) first, and then directly driving the rotation mechanism (40), in a process of converting the state of the seat with power of the power source (51). Here, the transmission means is formed by a sprocket (58) rotated by torque of a motor (51), and many holes (59) with which the sprocket (58) is rotatably engaged to transmit the power.

A seat device that can reliably prevent a rotation operation of a seat by a seated person, in a long state where the back of the seat is along a wall. A rotation lock mechanism (60) that can restrain the rotation of a seat (1), a rotation operation unit (200) that performs a release operation of restraint by the rotation lock mechanism (60), and a rotation operation prevention mechanism (210) that disables the release operation in the rotation operation unit (200), when the seat (1) is in the long state are included. The rotation operation prevention mechanism (210) includes an engaging unit (211) provided in the leg stand (11), and an engaged unit (207) that is provided in the rotation operation unit (200) in the movable stand (20), and disables the release operation in the rotation operation unit (200) by being engaged with the engaging unit (211) when the seat (1) is in the long state.

The invention relates to a vehicle comprising a driver's cab (12) comprising a base (14) and a seat (16), the vehicle having a longitudinal direction (X). The base (14) has a center (20) and a central longitudinal plane (P), the central longitudinal plane (P) extending in the longitudinal direction (X) and passing through the center (20) of the base (14). A projection of the seat (16) in an elevation direction (Z) on the base (14) is comprised in the base (14). An assembly comprising the base (14) and the seat (16) is designed to rotate with respect to a body of the vehicle about a first axis (D), the first axis (D) extending in an elevation direction (Z). The first axis (D) passes through the center (20) of the base (14).

[Object] To inhibit leg rests from colliding with each other and to allow a leg rest of his/her own seat to operate even in the case where a power source failure or the like occurs.

[Solving Means] A seat apparatus according to an embodiment of the present invention includes: a seat body; a control unit; and a setting means. The seat body includes a leg rest. The control unit includes a controller. The controller determines whether the seat body is in a first state in which the seat body does not face a front seat or a back seat of the seat body or a second state in which the seat body faces one of the front seat and the back seat. The controller enables, where the controller has determined that the seat body is in the first state, a tilt operation command for the leg rest to tilt forward, and invalidates, where the controller has determined that the seat body is in the second state, the tilt operation command. The setting means fixes the determination result by the controller to the first state.

A driver's seat for a rail vehicle includes a seat, a frame, a support, a fastening unit and a compressed air line, ensuring compressed-air-assisted functionalities of the driver's seat. The frame supporting the seat is mounted rotatably and connected to a first end of the support permitting the seat to rotate about an axis of the support. A second end of the support is connected to the fastening unit, fastening the seat in a vehicle control console. The air line ensures compressed-air-assisted seat functionalities and has a first region with partial coils running around the support at a predefined distance. The partial coils are formed and fastened such that rotational movement of the seat effects a change in distance of the partial coils relative to the support. The partial coils of the air line form a spiral, wound around the support at a predefined distance.

A seat support mechanism including a leg pedestal (11), which is fixedly provided on a floor in the vicinity of a side wall (A), a moving pedestal (20), which is disposed under a top face part (12) of the leg pedestal (11) and is capable of being advanced/retracted in a direction orthogonal to the side wall A; an underframe (30) of the seat, which is disposed above the top face part (12) of the leg pedestal (11), and is turnably supported by a turning shaft (41) in the moving pedestal (20), the turning shaft (41) avoiding an interference with the top face part (12), and an interlocking mechanism (50), which interlocks turning and advancing/retracting of the underframe (30), in which, when the seat is turned together with the underframe (30), the interlocking mechanism (50) converts the turning motion of the underframe (30) into a linear motion and, through the turning shaft (41), transmits it to the moving pedestal (20), thereby causing the moving pedestal (20) and the underframe (30) to be advanced/retracted in a direction orthogonal to the side wall (A).

The invention relates to a vehicle comprising a driver's cab (12) comprising a base (14) and a seat (16), the vehicle having a longitudinal direction (X).

The base (14) has a center (20) and a central longitudinal plane (P), the central longitudinal plane (P) extending in the longitudinal direction (X) and passing through the center (20) of the base (14). A projection of the seat (16) in an elevation direction (Z) on the base (14) is comprised in the base (14).

An assembly comprising the base (14) and the seat (16) is designed to rotate with respect to a body of the vehicle about a first axis (D), the first axis (D) extending in a elevation direction (Z). The first axis (D) passes through the center (20) of the base (14).

A passenger seat arrangement for installation in an aircraft comprises a seat unit with a backrest element and a seat element. The seat arrangement also comprises a supporting frame carrying the seat unit and comprising at least one seat mounting, which has a first backrest holder, to which the backrest element can be releasably fixed in a load-transferring manner in a first position on the seat mounting, and a second backrest holder, to which the backrest element can be releasably fixed in a load-transferring manner in a second position on the seat mounting. When the passenger seat arrangement is installed in the aircraft, the backrest element is pivoted in relation to a longitudinal axis of the aircraft in a state in which it is fixed to the first backrest holder relative to a state in which it is fixed to the second backrest holder.

A vehicle seat structure including: a mode switching mechanism including: a rotating mechanism which is configured to switch one seat of two seats between a state where the one seat faces a vehicle front direction and a state where the one seat faces a vehicle rear direction by rotating the one seat; and a slide mechanism which is configured to move another seat of the two seats from a laterally located position where the other seat is located side by side with the one seat to a vertically located position where the other seat is located to face, in the front-rear direction, the one seat facing the vehicle rear direction by obliquely sliding the other seat in a rear direction and in the seat width direction from the laterally located position.