Abstract: A collapsible bicycle (1) has a frame (2) collapsible in its plane. The frame (2) includes a head tube (3) having a collapsible bicycle front side end (10) in which a front wheel fork (12), which receives a front wheel (13), is mounted. A seat stay (5) has an end (38) receiving a seat tube (39). A lever (6) is articulated at a first articulation point (50) at a collapsible bicycle rear side end (37) of the head tube (3) and at a second articulation point (49) at the end (38) of the seat stay (5) receiving the seat tube (39). The lever (6) is arranged to the collapsible bicycle front side in a riding position of the collapsible bicycle (1). A down tube (4) is articulated at a third articulation point (18) at the collapsible bicycle front side end (10) of the head tube (3) and at a fourth articulation point (24) at an end (38a) of the seat stay (5), opposite the end (38) of the seat tube (39).

Abstract: The present invention provides a collapsible bicycle (1), having a frame (2), which is collapsible in its plane, wherein the frame (2) comprises: a head tube (3), having a collapsible bicycle front side end (10) in which a front wheel fork (12), which receives a front wheel (13), is mounted; a seat stay (5), having an end (38), which receives a seat tube (39); a lever (6), being articulated at a first articulation point (50), being at a collapsible bicycle rear side end (37) of the head tube (3), and at a second articulation point (49), being at the end (38) of the seat stay (5), which receives the seat tube (39), wherein the lever (6), in relation to the seat stay (5), being arranged to the collapsible bicycle front side in a riding position of the collapsible bicycle (1); and a down tube (4), being articulated at a third articulation point (18), being at the collapsible bicycle front side end (10) of the head tube (3), and at a fourth articulation point (24), being at an end (38a) of the seat stay (5), whic