초록 ▼

A flip-up seat construction includes a frame unit having a seat-back assembly, supporting a seat-back portion of a seat pan, and a bottom assembly, supporting a bottom portion of the seat pan and swingably attached to the seat-back assembly to move the bottom portion between a horizontal seat positi

A flip-up seat construction includes a frame unit having a seat-back assembly, supporting a seat-back portion of a seat pan, and a bottom assembly, supporting a bottom portion of the seat pan and swingably attached to the seat-back assembly to move the bottom portion between a horizontal seat position and a stand-up position. The seat-back assembly includes, first and second horizontal members, horizontally extending at positions corresponding to the upper and lower ends of the seat-back portion of the seat pan, first and second side members, respectively connected to the ends of each of the first and second horizontal members, and a swingably supporting member, integrally constructed with the first and second side members of the seat-back assembly and swingably supporting the bottom assembly. The bottom assembly includes, first and second horizontal members, horizontally extending at positions corresponding to the back and front ends of the bottom portion of the seat pan, and first and second side members respectively connected to the both ends of each of the first and second horizontal members. The back ends of the bottom portion/first and second side members are swingably supported by the swingably supporting member of the seat-back assembly.

대표청구항 ▼

1. A flip-up seat construction comprising: at least one seat pan having a bottom portion, a seat-back portion separate from the bottom portion, and a frame unit which includes a seat-back assembly for supporting the seat-back portion and a bottom assembly for supporting the bottom portion, said b

1. A flip-up seat construction comprising: at least one seat pan having a bottom portion, a seat-back portion separate from the bottom portion, and a frame unit which includes a seat-back assembly for supporting the seat-back portion and a bottom assembly for supporting the bottom portion, said bottom assembly being swingably attached to the seat-back assembly and swingable between a horizontal seat position and a stand-up position; said seat-back assembly of said frame unit having: a seat-back portion/first horizontal cross member which extends horizontally at a position corresponding to an upper end of said seat-back portion of said seat pan; a seat-back portion/second horizontal cross member which extends horizontally at a position corresponding to a lower end of said seat-back portion of said seat pan; a seat-back portion/first side member which is connected between respective ends at a first side of said seat-back portion/first and second horizontal cross members; a seat-back portion/second side member which is connected between respective ends at a second side of said seat-back portion/first and second horizontal cross members; and a swingably supporting member which is integrally constructed with said seat-back portion/first and second side members and swingably supports said bottom assembly of said frame unit, and said bottom assembly of said frame unit having: a bottom portion/first horizontal cross member which extends horizontally at a position corresponding to a back end of said bottom portion near the lower end of said seat-back portion when said bottom portion is in a horizontal seat position; a bottom portion/second horizontal cross member which extends horizontally at a position corresponding to a front end of said bottom portion away from the lower end of said seat-back portion when said bottom portion is in a horizontal seat position; a bottom portion/first side member which is connected between respective ends at a first side of said bottom portion/first and second horizontal cross members; and a bottom portion/second side member which is connected between respective ends at a second side of said bottom portion/first and second horizontal cross members; wherein said bottom assembly has a center of swing located in the swingably supporting member below and in front of the lower end of said seat-back portion, wherein said seat-back assembly further comprises a seat-back portion/additional horizontal cross member which horizontally extends at a position lower than and in front of the center of swing of said bottom assembly, wherein said swingably supporting member having first and second side connection members which are fixed to said seat-back portion/first and second side members and which extend downward to both ends of said additional horizontal cross member, wherein said swingably supporting member of said seat-back assembly is mounted on said first and second side connection members, wherein a rear end portion of said bottom assembly located near the center of swing contacts lower ends of said seat-back portion/first and second side members of said seat-back assembly when said bottom portion of said seat pan is at the horizontal seat position and thereby prohibits the swing movement of said bottom assembly from the seat position in a direction opposite to the stand-up position, and a swing prohibiting means mounted on said additional horizontal member for prohibiting swing movement of said bottom assembly when said bottom assembly is in the stand-up position. 2. The flip-up seat construction according to claim 1, wherein each of said seat-back portion/first and second side members includes a seat-back/side inside portion connected to one of both ends of each of said seat-back portion/first and second horizontal cross members, and an outside portion fixed to an outside of said seat-back/side inside portion to cover said seat-back/side inside portion, each of said bottom portion/first and second side members includes a bottom/side inside portion connected to one of both ends of each of said bottom portion/first and second horizontal cross members, and an outside portion fixed to an outside of said bottom/side inside portion to cover said bottom/side inside portion, and said bottom portion/second horizontal cross member includes a bottom/horizontal inside portion and an outside portion fixed to an outside of said bottom/horizontal inside portion to cover said bottom/horizontal inside portion. 3. The flip-up seat construction according to claim 1, wherein said seat-back portion/additional horizontal cross member includes a seat-back/horizontal inside portion connected to said seat-back portion/first and second side connection members, and an outside portion fixed to an outside of said seat-back/horizontal inside portion to cover said seat-back horizontal inside portion. 4. The flip-up seat construction according to claim 1, wherein said swing prohibiting means comprises an engaging lever rotatably supported by a shaft which is connected to said seat-back portion/additional horizontal cross member, said engaging lever being vertically swingable and extending to the front end of said bottom portion of said seat pan when said bottom portion is at the horizontal seat position, and said engaging lever selectively engages with said bottom portion/first horizontal cross member of said bottom assembly when said bottom portion of said seat pan is at the stand-up position. 5. A flip-up seat construction according to claim 1, wherein at least two seat pans are used, and wherein said seat-back assembly further includes at least one seat-back portion/intermediate member and wherein said bottom assembly further includes at least one bottom portion/intermediate member. 6. The flip-up seat construction according to claim 5, wherein said seat-back portion/intermediate member includes an inside portion having one end connected to a point on said seat-back portion/first horizontal cross member and another end connected to a point on said seat-back portion/second horizontal cross member, and an outside portion fixed to an outside of said inside portion to cover said inside portion, and said bottom portion/intermediate member includes an inside portion having one end connected to a point on said bottom portion/first horizontal cross member and another end connected to a point on said bottom portion/second horizontal cross member and an outside portion fixed to a surface of said inside portion at an upper side of said inside portion so as to cover said inside portion when said bottom assembly is at the horizontal seat position.