Provided is a brake device for a vehicle seat, which includes a tooth plate installed on an unlock member and coupled to a pinion shaft in a serration manner to constrain rotation of the pinion shaft. Therefore, even when the rotational constraint force by brake rollers is reduced due to the repeated loading, the rotation of the pinion shaft is reliably suppressed by the tooth plate, thereby preventing seat sagging.

The technology provides a seat release blocker that covers a seat release latching mechanism, where the latching mechanism would enable a passenger to fold down one or more seats of a vehicle. This can be particularly beneficial when the vehicle is operating in an autonomous driving mode, because certain areas within the vehicle may be restricted from passenger access. For instance, access to the trunk or cargo area may be limited to authorized service personnel. The seat release blocker includes a cover member that is fixedly secured to a seat such as a middle seat, using one or more fastener members such as a screw. Once the cover is releasably secured to the seat, the side of the cover with the fasteners may be completely or substantially covered by the side of an adjacent seat.

A brake device for a motor vehicle seat is composed of a brake assembly, a tooth assembly, and a lever assembly. The brake assembly includes a housing, a pinion shaft, a braking component, and a drive wheel that are structured to be self-held in an assembled state by mechanical interaction thereamong. The tooth assembly includes a holder plate and a tooth plate that are structured to be self-held in an assembled state by mechanical interaction therebetween. The lever assembly includes an input lever, a cover, a coil spring, and a lever bracket that are structured to be self-held in an assembled state by mechanical interaction thereamong. The brake assembly, the tooth assembly, and the lever assembly are arranged and assembled together in an axial direction.

A tray device for a vehicle includes a tray having a storage space capable of storing an article, a tray cover rotatably installed on the tray to open and close the storage space and including a coupling plate having a heart cam groove, and a locking device fixedly installed on an outer surface of the tray.

An arm rest assembly and aircraft passenger seat including the same. The arm rest includes a friction mechanism for resisting abrupt rotational movements of the arm rest. A rotationally fixed frame member defining a rotational axis and receives a rotational member of the arm rest configured to rotate around the rotational axis. A groove formed in an outer circumferential surface of the rotational member seats a O-ring disposed between the groove and an inner circumferential surface of the frame member. Tolerance between the frame member and arm rest is such that the O-ring is held in the groove in a compressed state and frictionally engagement each of the rotational member and the frame member.

An aircraft seat includes an actuator and a movement transmission device. The transmission device includes a frame provided with an immobilizing portion and a drive shaft. The transmission device further includes a gear wheel provided with coupling teeth having inclined side walls and a sleeve with an immobilizing portion complementary to the immobilizing portion of the frame, and coupling teeth having inclined side walls. The transmission device also has an elastic member configured to push the sleeve. The stiffness of the elastic member and the inclination of the side walls of the coupling teeth of the gear wheel and sleeve are chosen such that, when a torque greater than a threshold torque is applied to the gear wheel, the sleeve slides on the drive shaft from a position of coupling the sleeve to the gear wheel to a position of immobilizing the sleeve relative to the frame.

The present disclosure relates to a power swivel device for a vehicle seat where a brake unit is installed between a fixed plate mounted to a seat rail and a rotating plate mounted to a seat. The brake unit delivers rotational force of the motor to the rotating plate when the motor is operated and constrains a flow in a rotational direction of the rotating plate when the motor is stopped. Accordingly, it is possible to prevent a flow of a seat in a rotational direction due to gear backlash.

The present invention relates to a headrest controlling apparatus, and more particularly, to a headrest controlling apparatus which includes a headrest cover, a bracket installed on a stay rod, and a locking member installed in the bracket to fix a position of a headrest, wherein the headrest cover includes a stay rod coupling part to which the stay rod is rotatably coupled, and thus the headrest controlling apparatus can minimize a distance from the stay rod to a front lower edge of the apparatus, can be easily assembled due to the modularized bracket and locking member, and can be easily operated due to increased precision of the locking member.

An aircraft seat includes an actuator and a movement transmission device. The transmission device includes a frame provided with an immobilizing portion and a drive shaft. The transmission device further includes a gear wheel provided with coupling teeth having inclined side walls and a sleeve with an immobilizing portion complementary to the immobilizing portion of the frame, and coupling teeth having inclined side walls. The transmission device also has an elastic member configured to push the sleeve. The stiffness of the elastic member and the inclination of the side walls of the coupling teeth of the gear wheel and sleeve are chosen such that, when a torque greater than a threshold torque is applied to the gear wheel, the sleeve slides on the drive shaft from a position of coupling the sleeve to the gear wheel to a position of immobilizing the sleeve relative to the frame.

A seat backrest inertial locking system configured to lock a seat backrest in place upon rapid acceleration or deceleration of a vehicle. The locking system includes an inertial mass located on an actuation ring, the inertial mass configured to cause rotation of the actuation ring when a rapid acceleration or deceleration is experienced. Rotation of the actuation ring causes longitudinal movement of a locking member into a receiving slot disposed on a truss of the seat backrest, thereby locking the seat backrest in place.