Abstract: A bicycle hub structure includes: a hub body including a first clutch ring, a sprocket support body connecting to the hub body and including a second clutch ring, first magnets and a magnetic ring. The magnetic ring is disposed on an axial side of the second clutch ring far away from the hub body, and the first magnets are disposed on a side of the second clutch ring adjacent to the magnetic ring. The sprocket support body includes a first state and a second state. In the first state, the first magnets and the magnetic ring attract the first clutch ring, so that the first clutch ring is in contact with the second clutch ring, and in the second state, a magnetic attracting force of the first magnets and the magnetic ring on the first clutch ring is less than that in the first state.

Abstract: A detachable bicycle handlebar comprises a handlebar body, two grip portions and two fasteners. The handlebar body includes two ends, each end includes a sleeve section and an first hole, and the first hole is formed on an outer peripheral surface of the handlebar body and is communicated with an interior of the sleeve section; the two grip portions are disposed at the two ends of the handlebar body, each grip portion includes a connecting section and a second hole, the second hole is adjacent to one end of the handlebar body and is communicated with an interior of the connecting section, and the connecting section is detachably connected to the sleeve section; and each of the two fasteners passes through the first hole at one end of the handlebar body and is fastened to the second hole of one of the grip portions.

Abstract: The present disclosure provides a cable-controlled adjusting apparatus. The cable-controlled adjusting apparatus includes an adjusting element rotatably joined with the fastening element of a handlebar of a bicycle and a fixing element. A stopping wall is disposed on the adjusting element. A plurality of first grooves is disposed on the stopping wall. The fixing element includes a rod body passing through the adjusting element and an elastic element and includes a head portion pressing against the stopping wall. A plurality of second grooves is disposed on the head portion toward the adjusting element. A ball is sandwiched between the first and second grooves. The elastic element is located between a stopping member and the stopping wall. A cable passes through the fixing element. One end of the cable is fixed to the head portion and the other end passes through the fastening element and is connected to a controller.

Abstract: A hydraulic brake master cylinder includes a cylinder unit having first and second spaces, a channel communicating the spaces and an adjuster exposed outside; a piston slidably disposed in the first space; a first spring applying an elastic force to the piston; a rod moving relative to the piston; a second spring applying an elastic force to the rod; a seal attached to the rod and moving controllably to seal the channel; and a nut threaded onto the rod. The adjuster is rotatable to make the nut and the rod rotate with respect to each other so as to change the distance between the seal and the end of the channel to adjust the free stroke.

Abstract: A hydraulic brake handle assembly, wherein the response time of the hydraulic brake caliper can be much improved, and the brake action can be carried out immediately. When the brake lever is pressed, the volume of the oil pushed by the piston is doubled due to the hydraulic brake handle assembly is provided with two piston portions inserted in two oil chambers. Since the response time of the hydraulic caliper of the present invention is improved, it allows the brake pads of the hydraulic caliper to be assembled at a relatively large distance from the brake disc, so that sand won't get struck between the brake pads and the brake disc, and the brake disc remains useful when they are bent out of plain rubbing after using.

Abstract: A multi-position adjustable height seat post comprises an inner tube, an outer tube, a locking assembly, a triggering device, a first extending element, and a second extending element disposed between the tubes. The locking assembly comprises an actuating unit, a plurality of parallel grooves located in the outer tube, a plurality of spherical detent elements located, in the grooves, and a plurality of spherical elements located in the inner tube. The triggering device connects to the actuating unit. The first extending element constantly pushes the to actuating unit moving in a first direction. The second extending element disposes between the tubes. Once the triggering device is triggered, the actuating unit moves in a second direction contrary to the first direction and makes the spherical elements to move inward laterally to let the inner tube and outer tube move relative to each other freely.