A swivel device for vehicle seats may rotate a seat mounted inside a vehicle at 180° or more and firmly fix the seat at a normal position before and after rotation. The swivel device includes: a base plate provided with a plurality of first locking members; a swivel plate disposed on the base plate to be rotated by a second motor; a rotary force transmission mechanism mounted on an output shaft of the second motor and the swivel plate to transmit a rotary force of the second motor to the swivel plate; an elevating plate provided with a plurality of second locking members separably coupled to the plurality of first locking members and formed on a lower surface of the elevating plate; and a first motor mounted on an upper surface of the elevating plate to transmit a rotary force to the lead screw.

A vehicle seat having fewer components and having a pitching mechanism advantageous for strength/rigidity is provided. The vehicle seat includes: a base frame mounted in a vehicle compartment; a cushion frame pin-connected to a first connecting point of the base frame to be capable of a forward leaning operation; a back frame disposed to be capable of a reclining operation with respect to the cushion frame; a front link swingably pin-connected at a proximal end side thereof with a second connecting point of the base frame and slidably connected at a distal end side thereof with the cushion frame; a lock unit for locking the cushion frame to the base frame at a seated position and regulating a pitching operation of the main frame; and a release member for releasing a locked state.

A seat tilting system for tilting a seat, in particular a vehicle seat, may have at least a seat support structure to support and mount the seat, a base platform defining a reference plane, and a number of swivel actuators coupling the seat support structure relative to the base platform. At least a first swivel actuator is configured to swivel the seat support structure with respect to the base platform around a first swivel axis. At least a second swivel actuator is configured to swivel the seat support structure with respect to the base platform around a second swivel axis. At least a third swivel actuator is configured to rotate the seat support structure around a third swivel axis perpendicular to the base platform.

A vehicle seat operating device has a reclining lever, a lifting lever and a getting in/out support lever for rotating a vehicle seat in a horizontal plane. A reclining lever operation surface and a lifting lever underside operation surface are accessible from a side of the seat. The getting in/out support lever has a recess section which is formed toward the front, and an operation surface which is a ceiling surface of the recess is accessible from the front. Side access to the operation surface is blocked by an out sidewall located on a seat width direction outer side of the operation surface. The getting in/out support lever is easily distinguished from the other two levers because accessible directions are different.

A seat device for a construction machine comprising a positioning device and a seat console having a seat arranged thereon, wherein the positioning device comprises a first pivot arm and a second pivot arm for guiding the seat console along a curved trajectory, wherein the pivot arms respectively comprise a first end and a second end, wherein the respective first end of the pivot arms is supported on the positioning device via a respective first rotary joint, and the respective second end of the pivot arms is connected to the seat console via a respective second rotary joint in a manner as spaced apart from each other.

The present invention discloses a seat rotation locking mechanism, including a locking mechanism mounted on a rotating disc in a seat rotation mechanism and at least one lockhole disposed on an outer circumference of a fixed disc in the seat rotation mechanism, where the locking mechanism includes: a lock support fixed on the rotating disc; and at least two lock pins horizontally and moveably configured in the lock support, where a first end of the lock pin is of a truncated-cone-shaped structure; and the first end of the lock pin is inserted into the lockhole, to implement zero-clearance locking by using wedging between the truncated-cone-shaped structure of the first end of the lock pin and the lockhole. The present invention eliminates a fit clearance existing after a rotation mechanism is locked, improves a grade of a product, and improves user experience. In an adjustment process, even if an operator releases an adjustment lever, a locking piece and a fixed disc do not generate scraping noise, and service life of the product is prolonged since wearing is eliminated.

The present invention discloses a seat rotation locking mechanism, including a locking mechanism mounted on a rotating disc in a seat rotation mechanism and at least one lockhole disposed on an outer circumference of a fixed disc in the seat rotation mechanism, where the locking mechanism includes: a lock support fixed on the rotating disc; and at least two lock pins horizontally and moveably configured in the lock support, where a first end of the lock pin is of a truncated-cone-shaped structure; and the first end of the lock pin is inserted into the lockhole, to implement zero-clearance locking by using wedging between the truncated-cone-shaped structure of the first end of the lock pin and the lockhole. The present invention eliminates a fit clearance existing after a rotation mechanism is locked, improves a grade of a product, and improves user experience.

Examples herein describe a vehicle seating system. The vehicle seating system may include a rail mounted to a vehicle roof and supported by a vehicle frame. The vehicle seating system may include an anchor system movable along the rail, the anchor system including: a locking device that locks the anchor system in a position along the rail; and a heating, vacuuming, and air conditioning (HVAC) port in communication with a HVAC duct within the vehicle roof. The vehicle seating system may include an interchangeable seat module that connects to the anchor system to suspend the seat module above a floor of the vehicle, wherein the seat module connects to the HVAC port.

The present disclosure provides a swivel stop comprising a rotating member, a first boss coupled to the rotating member and a second boss coupled to the rotating member, and a second plate having a first interference surface and a second interference surface. An interference between the first boss and the first interference surface and the second boss and the second interference surface tends to limit the rotation of the rotating member with respect to the second plate. The swivel stop may further comprise a rail wherein the second plate is configured to translate along the rail.

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).