Seat frame
The present invention provides a seat frame comprising: a cushion part for supporting a cushion; a height-adjusting part which is provided below the cushion part, and which adjusts the height of the cushion part by means of a plurality of rotary links; a rotating part which is provided below the height-adjusting part, and which rotates the height-adjusting part and the cushion part; and reinforcing bracket parts which are coupled to the lower side of the rotating part so as to reinforce the rotating part, and which are provided over a pair of rails of a rail part arranged below same so as to be spaced apart.
1 . A seat frame comprising:
a cushion part supporting a cushion;
a height-adjusting part installed on a lower side of the cushion part and adjusting a height of the cushion part via a plurality of rotating links;
a rotating part installed below the height-adjusting part and rotating the height-adjusting part and the cushion part; and
a reinforcing bracket part coupled to a lower side of the rotating part, reinforcing the rotating part, and installed across a pair of rails of a rail part disposed on a lower side and spaced apart from each other,
wherein the height-adjusting part includes,
a first link connecting the rotating part and the cushion part at a front portion; and
a second link connecting the rotating part and the cushion part at a rear portion, wherein the rotating part includes,
a connection bracket coupled to the first link and the second link,
wherein the connection bracket has a first connection reinforcing portion installed in front of the connection bracket and forming a closed cross-section with the connection bracket.
2 . The seat frame of claim 1 , wherein the rotating part further includes,
a fixed plate disposed on a lower side;
a base plate joined to an upper side of the fixed plate; and
a rotating plate rotatably installed between the fixed plate and the base plate.
3 . The seat frame of claim 2 , one side of the connection bracket coupled to an upper side of the rotating plate and the other side of the connection bracket coupled to the first link and the second link.
4 . A seat frame comprising:
a cushion part supporting a cushion;
a height-adjusting part installed on a lower side of the cushion part and adjusting a height of the cushion part via a plurality of rotating links;
a rotating part installed below the height-adjusting part and rotating the height-adjusting part and the cushion part; and
a reinforcing bracket part coupled to a lower side of the rotating part, reinforcing the rotating part, and installed across a pair of rails of a rail part disposed on a lower side and spaced apart from each other,
wherein the height-adjusting part includes,
a first link connecting the rotating part and the cushion part at a front portion; and
a second link connecting the rotating part and the cushion part at a rear portion, wherein the rotating part includes,
a connection bracket coupled to the first link and the second link,
wherein the connection bracket has a second connection reinforcing portion installed at a rear portion of the connection bracket and forming a closed cross-section with the connection bracket.
5 . The seat frame of claim 4 , wherein the connection bracket is provided with a seat belt fixed to a rear upper side thereof, and the second connection reinforcing portion is coupled to a rear lower side of the connection bracket.
6 . A seat frame comprising:
a cushion part supporting a cushion;
a height-adjusting part installed on a lower side of the cushion part and adjusting a height of the cushion part via a plurality of rotating links;
a rotating part installed below the height-adjusting part and rotating the height-adjusting part and the cushion part; and
a reinforcing bracket part coupled to a lower side of the rotating part, reinforcing the rotating part, and installed across a pair of rails of a rail part disposed on a lower side and spaced apart from each other,
wherein the height-adjusting part includes,
a first link connecting the rotating part and the cushion part at a front portion; and
a second link connecting the rotating part and the cushion part at a rear portion, wherein the rotating part includes,
a fixed plate disposed on a lower side;
a base plate joined to an upper side of the fixed plate;
a rotating plate rotatably installed between the fixed plate and the base plate;
a motor plate fixed to an upper side of the rotating plate; and
a motor member installed on the motor plate and equipped with a drive gear engaged with a big gear fixed to the base plate.
7 . A seat frame comprising:
a cushion part supporting a cushion;
a height-adjusting part installed on a lower side of the cushion part and adjusting a height of the cushion part via a plurality of rotating links;
a rotating part installed below the height-adjusting part and rotating the height-adjusting part and the cushion part; and
a reinforcing bracket part coupled to a lower side of the rotating part, reinforcing the rotating part, and installed across a pair of rails of a rail part disposed on a lower side and spaced apart from each other,
wherein the height-adjusting part includes,
a first link connecting the rotating part and the cushion part at a front portion; and
a second link connecting the rotating part and the cushion part at a rear portion, wherein the rotating part includes,
a fixed plate disposed on a lower side;
a base plate joined to an upper side of the fixed plate;
a rotating plate rotatably installed between the fixed plate and the base plate;
a bracket plate installed across the pair of rails and comprised of a single member coupled to the fixed plate; and
a bracket reinforcing member coupled between the fixed plate and the bracket plate and comprised of a single member reinforcing the bracket plate.
8 . The seat frame of claim 7 , wherein the bracket plate is reinforced by overlapping the bracket reinforcing member on an upper side thereof, and the fixed plate of the rotating part is coupled to an upper side of the bracket reinforcing member.
9 . The seat frame of claim 8 , wherein the bracket plate, the bracket reinforcing member, and the fixed plate of the rotating part have lengths corresponding to each other in a front-to-back direction, and have longitudinal overlapping sections overlapping and fixed to each other in a up and down direction.
10 . The seat frame of claim 7 , wherein the bracket reinforcing member extends in a front-to-back direction along the rails, and has a reinforcing bead protruding upwardly in front of the bracket reinforcing member.
11 . The seat frame of claim 10 , wherein the reinforcing bead is disposed on a lower side of the rotating plate in a plane view.