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: A mount for optional equipment for bicycles. The mount is mounted on handle bars of bicycles. A number of pairs of flanges are attached to or formed on the mount. A pair of flanges is attached to or formed on each item of optional equipment. The pairs of flanges attached to or formed on the mount engage with the pairs of flanges attached to or formed on the items of optional equipment, so that the items of optional equipment are mounted on the mount in a quickrelease way.

Abstract: A mudguard is provided for a bicycle of the type with a brake reinforcing plate which is mounted to a seat stay of the bicycle by a fixing device. The mudguard includes an elongate shell which is arc-shaped in section and has a front end and a rear end. A recess is formed along a longitudinal direction of an underside of the shell. A slot is formed along a transverse direction of the front end of the shell and defines a first panel and a second panel which are parallel to each other. The first panel and the second panel are engaged on the brake reinforcing plate with the brake reinforcing plate at least partially received in the slot. A pair of grooves are formed in a mediate portion of the second panel and extend downwardly, and thus define a flexible snap fastener which has a hook end in a distal end thereof for engaging with an underside of the brake reinforcing plate and for securing the mudguard to the brake reinforcing plate.

Abstract: A seat of a bicycle including a pair of rods disposed on the bottom, a plate disposed above the rods, a bracket disposed below the rods and fixed to the plate so as to fix the rods between the plate and the bracket, the bracket including two flanges formed on the bottom portion, a bag including a member disposed on the upper portion and having a pair of channels for engagement with the flanges of the bracket so that the member can be coupled to the bracket and so that the bag can be coupled to the seat.

Abstract: A holder for a bicycle including a frame for holding a bottle, a block formed on the frame and fixed to the bicycle, a cam portion formed on top of the block, a retainer having an opening formed in lower portion for engagement with the cam portion so as to limit rotation of the retainer relative to the block, a base which is provided for holding a lower portion of the bottle being coupled to the block, and a bag coupled to the lower portion of the block for carrying other objects.