초록 ▼

A folding vehicle seat includes a sliding rail having a predetermined length installed on a floor of a vehicle. A leg unit is seated on the sliding rail such that the leg unit slides along the sliding rail. A lifting device has a seat cushion on which a passenger sits and is mounted on the leg unit

A folding vehicle seat includes a sliding rail having a predetermined length installed on a floor of a vehicle. A leg unit is seated on the sliding rail such that the leg unit slides along the sliding rail. A lifting device has a seat cushion on which a passenger sits and is mounted on the leg unit such that the lifting device moves upward and downward, thereby moving the seat cushion upward and downward. A locking device is mounted on the leg unit such that the locking device is connected to both the sliding rail and the lifting device and allows either sliding movement of the leg unit along the sliding rail or upward and downward movement of the lifting device.

대표청구항 ▼

1. A folding vehicle seat, comprising: a sliding rail having a predetermined length and mounted on a floor of a vehicle;a leg unit seated on the sliding rail to slide along the sliding rail;a lifting device having a seat cushion on which a passenger sits, the lifting device mounted on the leg unit s

1. A folding vehicle seat, comprising: a sliding rail having a predetermined length and mounted on a floor of a vehicle;a leg unit seated on the sliding rail to slide along the sliding rail;a lifting device having a seat cushion on which a passenger sits, the lifting device mounted on the leg unit such that the lifting device moves upward and downward and the seat cushion moves upward and downward; anda locking device mounted on the leg unit and connected to both the sliding rail and the lifting device to allow sliding movement of the leg unit along the sliding rail or upward and downward movement of the lifting device,wherein the lifting device includes:a lifting housing mounted on the leg unit;a lifting actuator installed in the lifting housing and providing an upward and downward moving force; anda lifting member provided in the lifting housing, with the seat cushion attached on the lifting member, the lifting member moving upward and downward by using the upward and downward moving force of the lifting actuator. 2. The folding vehicle seat of claim 1, wherein the sliding rail is mounted on the floor underneath a fixed seat and extends to one side. 3. The folding vehicle seat of claim 1, wherein the leg unit includes: a panel part on which the lifting device is installed; anda sliding part extending downward from the panel part and seated on the sliding rail. 4. The folding vehicle seat of claim 1, wherein the lifting housing has a guide groove axially extending along an inner circumferential surface of the lifting housing, and the lifting member has a guide protrusion extending along an outer circumferential surface of the lifting member, the guide protrusion being engaged with the guide groove. 5. The folding vehicle seat of claim 1, wherein the locking device includes: a sliding motion locking part provided on the sliding rail and selectively locked to the sliding rail;a lifting motion locking part provided on a lower surface of the lifting housing and selectively connected to or disconnected from the lifting member to prevent or allow the upward and downward movement of the lifting member; anda manipulation unit mounted on the leg unit and having a first link connected to the sliding motion locking part and a second link connected to the lifting motion locking part. 6. The folding vehicle seat of claim 5, wherein the sliding rail has a sliding groove extending in a length direction of the sliding rail, a first fixing recess formed in the sliding groove to fix a first position of the leg unit, and a second fixing recess formed in the sliding groove to fix a second position of the leg unit, in which the first and second fixing recesses are spaced apart from each other, andwherein the sliding motion locking part is locked to the first fixing recess or to the second fixing recess during sliding along the sliding groove, thus fixing the sliding motion locking part. 7. The folding vehicle seat of claim 6, wherein the sliding rail further includes a third fixing recess at an opposite side of the second fixing recess. 8. The folding vehicle seat of claim 5, wherein the lifting motion locking part has a circular disc shape such that the lifting motion locking part rotates based on a center thereof, a plurality of locking holes formed on the lifting motion locking part and spaced apart from each other in a circumferential direction of the lifting motion locking part, anda plurality of locking protrusions are provided on a lower end of the lifting member such to fix locking protrusions to the respective locking holes. 9. The folding vehicle seat of claim 8, wherein each of the locking protrusions has a hook shape and being bent after extending downward from the lower end of the lifting member, andeach of the locking holes comprises two parts with different widths to remove the locking protrusions from the respective locking holes when the lifting motion locking part rotates with the locking protrusions which are inserted in and locked to the respective locking holes. 10. The folding vehicle seat of claim 9, wherein each of the locking protrusions comprises an extension part extending downward and a hook part being bent from a lower end of the extension part, andeach of the locking holes has a small width part into which the extension part is inserted and a large width part into which the hook part is inserted, in which the small width part and the large width part communicate with each other. 11. The folding vehicle seat of claim 5, wherein the lifting motion locking part is connected to an elastic member provided on the lower surface of the lifting housing, such that the lifting motion locking part returns from a rotated position to an original position thereof. 12. The folding vehicle seat of claim 5, wherein the manipulation unit is mounted on the leg unit and moves inward and outward from the leg unit, in which a first end of the manipulation unit is exposed outside the leg unit and a second end of the manipulation unit is connected to both the first link and the second link. 13. The folding vehicle seat of claim 5, wherein the manipulation unit is mounted on the leg unit and moves inward and outward from the leg unit, the manipulation unit including:a sliding motion lever part to which the first link is connected; anda lifting motion lever part moving along with the sliding motion lever part such that the lifting motion lever part moves by a moving distance longer than a moving distance of the sliding motion lever part during an inward movement thereof, the lifting motion lever part being connected to the second link. 14. The folding vehicle seat of claim 13, wherein each end of the sliding motion lever part and the lifting motion lever part is exposed outside the leg unit and has a respective inclined surface at the same inclination angle.