A seat rail for a vehicle includes: a rail gap cover combined with a moving rail, and a slit cover combined with the rail gap cover to close the gap between a fixed rail and the moving rail regardless of movement of the moving rail, whereby it is possible to prevent foreign substances from entering into the fixed rail.

A seat rail for a vehicle includes: a rail gap cover combined with a moving rail, and a slit cover combined with the rail gap cover to close the gap between a fixed rail and the moving rail regardless of movement of the moving rail, whereby it is possible to prevent foreign substances from entering into the fixed rail.

The present disclosure provides a seat track mechanism installed beneath a vehicle seat in order to move the vehicle seat in the forward and backward directions. A monotrack mechanism, to which a monopost structure and a single rail structure are applied, is installed at the bottom of the seat. The seat track mechanism includes a structure for hook-engaging lower and upper rails constituting the mono track mechanism by hook guides, thereby being capable of securing sufficient strength upon head-on or rear-end collision. The present disclosure also provides a seat track mechanism for a vehicle including a locking mechanism capable of enhancing stability of a passenger through structural reinforcement given at the bottom of the vehicle when it is necessary to ensure safety of the passenger in a situation such as collision or sudden stop or the like.

A seat track mechanism for a vehicle seat. The seat track mechanism may include an upper track, a lower track, a striker, a lever, and a pawl. The lever may be rotatable about a lever axis. The pawl may be rotatable with respect to the lever about a pawl axis when the striker engages the pawl.

A motion guiding device includes: a lower rail having a guiding groove; an upper rail movably disposed in the guiding groove; a first side cover and a second side cover that are fixed to the lower rail; and a slide fastener held by the first side cover and the second side cover. Each of the first side cover and the second side cover includes: a cover body piece engaged with a fastener tape of the slide fastener such that the fastener tape is movable to open and close the slide fastener; and a fixing piece extending from a surface of the cover body piece. The cover body piece includes a support projection projecting from the surface of the cover body piece.

A track assembly for a vehicle includes a rail assembly. The rail assembly defines an interior aperture. The interior aperture may be inaccessible from a top side, a first lateral side, and a second lateral side of the rail assembly.

A track assembly includes a track and/or a support member. The track may include a first ramped portion and/or a second ramped portion. The support member may include a rolling member. A first side of the rolling member may include a first contact portion, and/or a second side of the rolling member may include a second contact portion. The support member may be configured to move along the track via rotation of the rolling member. The first contact portion and/or the second contact portion may be configured to contact the first ramped portion and/or the second ramped portion. The rolling member may include a flange that may be configured to engage an inner portion of the track. The inner portion may be substantially vertical. The track may include an opening that may be disposed between the inner portion and/or a second inner portion of the track.

A track assembly includes a track and a support member. The support member may include a slider and/or an electrical connector. The slider may be configured to move longitudinally to move the electrical connector between a first rotational position and/or a second rotational position. In the first position of the electrical connector, the electrical connector may be in electrical contact with the track. In the second position of the electrical connector, the electrical connector may not be in electrical contact with the track. The electrical connector may include a cam, and/or the cam may be configured to contact the slider. Longitudinal movement of the slider may rotate the cam to move the electrical connector between the first rotational position and/or the second rotational position. The slider may include a first ramped portion and/or a second ramped portion that may be configured to contact the slider.

A track assembly includes a track, a transmitter unit, a support member, and a receiver unit. The transmitter unit may be connected to the track, and/or the support member may be configured for connection with the track. The receiver unit may be connected to the support member and/or may be configured to receive light from the transmitter unit. The track assembly may include a first electronic control unit that may be connected to the transmitter unit. The first electronic control unit may be configured to control the transmitter unit. The transmitter unit may include a light source, and/or the transmitter unit may be configured to transmit light from the light source into the track. The transmitter unit may be configured to transmit visible light and/or non-visible light. The track assembly may include a second electronic control unit.

A seat track mechanism for installing beneath a vehicle seat in order to move the vehicle seat in the forward and backward directions includes a monotrack mechanism, to which a monopost structure and a single rail structure are applied. The seat track mechanism includes a structure for hook-engaging lower and upper rails constituting the mono track mechanism by hook guides. The single rail structure applied to the seat track mechanism is capable of not only reducing actuating force required for operation, but also preventing creation of excessive clearance upon stopping.