Abstract: A rear wheel hub assembly includes a sleeve and a first installation portion and a second installation portion are respectively located in the two open ends of the sleeve. A hub is mounted to one end of the sleeve and two bearings are located between the two open ends of the hub and the sleeve. A ratchet socket is mounted to an end of the sleeve and located away from the first positioning portion. Two end members are located on the two open ends of the sleeve and each end member has a body. The two respective bodies of the two end members are respectively engaged with the first and second installation portions. The two end members are replaceable when the axle of different sizes is replaced so as to be connected to the bicycle frame.

Abstract: A packing box comprises a peripheral portion and two end portions are respectively connected to two ends of the peripheral portion. A shock-absorbing device has two support members located on the two ends of the peripheral portion, and the two support members each are bent to be a U-shaped member and linearly movable toward the end portion corresponding thereto. At least one positioning portion is connected to each of the support members so as to retain an object. The object can be moved with the support members so as to absorb the vibration and impacts.

Abstract: An electric hub unit includes a hub composed of first casing and a second casing. An electric unit is located between the first and second casings. An axle extends through two respective centers of the first and second casings. The first casing has a reception recess defined in one side thereof. A first extension and a second extension extend axially from the first casing and toward in opposite directions. A bearing is located in the inside of the second extension. A socket unit has a tubular portion and a ratchet unit is connected to the socket unit. The socket unit is mounted to outside of the first casing, and a bearing and a plate are located between the tubular portion and the first extension. The hub unit prevents water and foreign objects from entering into the hub.

Abstract: A bicycle hub assembly includes a hub with an axle extending therethrough. A socket is connected to the hub and has a base connected thereto. The base has multiple pawl recesses and each pawl recess has two receiving portions. A ratchet unit has multiple pawls, multiple resilient members and a toothed ring. The pawls each have a first protrusion and a second protrusion respectively extending from one end thereof. A restriction slot is defined in one side of the pawl. The two ends of the resilient member are respectively received in the two ends of the pawl recess. Each resilient member has a curved contact portion which contacts the restriction slot. The toothed ring is located in the hub and the pawls are engaged with the toothed ring. When the first protrusion is worn out, the second protrusion is engaged with the ratchet teeth and the hub assembly works normally.

Abstract: A packing box comprises a peripheral portion and two end portions are respectively connected to two ends of the peripheral portion. A shock-absorbing device has two support members located on the two ends of the peripheral portion, and the two support members each are bent to be a U-shaped member and linearly movable toward the end portion corresponding thereto. At least one positioning portion is connected to each of the support members so as to retain an object. The object can be moved with the support members so as to absorb the vibration and impacts.

Abstract: A bicycle hub driving system includes a hub with a socket unit connected thereto. An axle unit extends through the hub and the socket unit. A clutch driving device is located between the ratchet unit and the hub. The clutch driving device includes a clutch unit, a driving unit and a driving member located between the clutch unit and the driving unit. The clutch unit includes a first ratchet portion on the ratchet unit and a second ratchet portion on the driving member. The driving unit includes first driving teeth on the hub and second driving teeth on the driving member. By the linear movement of the riving member between the first driving teeth and the first ratchet portion, the first and second ratchet portions are engaged with each other or disengaged from each other to co-rotate the hub and the socket unit in one direction.

Abstract: A bicycle hub driving system includes a hub with a socket unit connected thereto. An axle unit extends through the hub and the socket unit. A clutch driving device is located between the ratchet unit and the hub. The clutch driving device includes a clutch unit, a driving unit and a driving member located between the clutch unit and the driving unit. The clutch unit includes a first ratchet portion on the ratchet unit and a second ratchet portion on the driving member. The driving unit includes first driving teeth on the hub and second driving teeth on the driving member. By the linear movement of the riving member between the first driving teeth and the first ratchet portion, the first and second ratchet portions are engaged with each other or disengaged from each other to co-rotate the hub and the socket unit in one direction.

Abstract: An electric hub unit includes a hub composed of first casing and a second casing. An electric unit is located between the first and second casings. An axle extends through two respective centers of the first and second casings. The first casing has a reception recess defined in one side thereof. A first extension and a second extension extend axially from the first casing and toward in opposite directions. A bearing is located in the inside of the second extension. A socket unit has a tubular portion and a ratchet unit is connected to the socket unit. The socket unit is mounted to outside of the first casing, and a bearing and a plate are located between the tubular portion and the first extension. The hub unit prevents water and foreign objects from entering into the hub.

Abstract: A rear wheel hub assembly includes a sleeve and a first installation portion and a second installation portion are respectively located in the two open ends of the sleeve. A hub is mounted to one end of the sleeve and two bearings are located between the two open ends of the hub and the sleeve. A ratchet socket is mounted to an end of the sleeve and located away from the first positioning portion. Two end members are located on the two open ends of the sleeve and each end member has a body. The two respective bodies of the two end members are respectively engaged with the first and second installation portions. The two end members are replaceable when the axle of different sizes is replaced so as to be connected to the bicycle frame.

Abstract: A reinforcement structure for bearings of a bicycle hub assembly includes a hub and an axle extends through the hub. A connection portion is defined in one end of the hub. A ratchet sleeve has a transmission portion located on one end thereof and a bearing is located in the transmission portion. Multiple slots are defined in outside of the transmission portion and the axle extends through the ratchet sleeve. A ratchet unit having multiple ratchet teeth and a ratchet ring which is connected to the connection portion. The ratchet teeth are engaged with the slots. The ratchet ring has multiple ratchet slots defined in the inner periphery thereof and the ratchet teeth are engaged with the ratchet slots. A positioning unit has a positioning member located on one side of the bearing so as to prevent the bearing from shifting axially.

Abstract: The present invention discloses a bicycle hub speed-change assembly having a planetary gear set disposed therein, a speed-change gear wheel separately disposed on both left and right sides of the planetary gear set, and a first ratchet jacket and a second ratchet jacket respectively disposed on the external side of the speed-change gear wheels, such that control ratchets of the first ratchet jacket and second ratchet jacket are selectively hidden or driven by an external ring of the planetary gear set to couple the first ratchet jacket with a hub, so as to provide three different speeds and the invention features the advantages of stable speed, simplified components, and light weight.

Abstract: The present invention discloses a bicycle hub speed-change assembly having a planetary gear set disposed therein, a speed-change gear wheel separately disposed on both left and right sides of the planetary gear set, and a first ratchet jacket and a second ratchet jacket respectively disposed on the external side of the speed-change gear wheels, such that control ratchets of the first ratchet jacket and second ratchet jacket are selectively hidden or driven by an external ring of the planetary gear set to couple the first ratchet jacket with a hub, so as to provide three different speeds and the invention features the advantages of stable speed, simplified components, and light weight.

Abstract: The present invention discloses a disc brake hub adapter structure, which is a hollow cylinder having a plum blossom shaped wavy thread on its internal periphery to be engaged with an axle having a corresponding shape with the hub, and a plurality of embedding teeth disposed around the corner folding position is disposed at the internal side of the axle of the hub and engaged with a plurality of concave teeth around the internal side of the adapter, wherein the adapter has a connecting section extended outward from a side ring at the external periphery of the adapter. The connecting section has a plurality of holes for receiving a connecting device and connecting a brake disc with a plum blossom shaped center hole.

Abstract: This invention discloses a bicycle ratchet bushing, comprising a bushing for coupling to a connecting axle rod to drive the bicycle wheel to rotate, a pawl ring disposed on the inner side of the bushing, a plurality of pawls interdentally dispersed around the outer periphery of the ratchet ring, a resilient ring surrounding each pawl, such that the inner end of the pawl is a pivotal circular turning end, and the outer end is a moving end capable of opening outwards and retracting, and a pawl ring being sheathed outside the ratchet wheel, such that a buffer space is designed at the internal diameter of the pawl ring to prevent noise production from friction between the resilient ring and the pawl ring of the bushing.

Abstract: A bicycle spoke fixture assembly is provided. The bicycle spoke fixture assembly includes a cushion member being placed in a space of the hole on the wheel wall allowing the spoke to pass through to latch, and a locking member passing through a through hole at the periphery of the hub and connecting the threaded section of the spoke. The A bicycle spoke fixture assembly makes the assembly and disassembly of a spoke quickly, and also enhances the strength of the wheel.

Abstract: This invention discloses a bicycle ratchet bushing, comprising a bushing for coupling to a connecting axle rod to drive the bicycle wheel to rotate, a pawl ring disposed on the inner side of the bushing, a plurality of pawls interdentally dispersed around the outer periphery of the ratchet ring, a resilient ring surrounding each pawl, such that the inner end of the pawl is a pivotal circular turning end, and the outer end is a moving end capable of opening outwards and retracting, and a pawl ring being sheathed outside the ratchet wheel, such that a buffer space is designed at the internal diameter of the pawl ring to prevent noise production from friction between the resilient ring and the pawl ring of the bushing.

Abstract: A quick release mechanism includes a cylindrical rod having two opposed ends and an intermediate portion formed with a diametrically extending screw hole. A mounting shaft has first and second threaded ends. A locking nut is connected to the second threaded end of the mounting shaft. A manually operated lever has an end portion and a pair of spaced lugs which extend longitudinally from the end portion and which are formed with aligned eccentric holes that receive respectively the opposed ends of the cylindrical rod therein. Each of the lugs has a cam edge. A pressing member has a concave surface in contact with the cam edges of the manually operated lever and a generally U-shaped connecting member which has two distal ends extending integrally from the surface of the pressing member. The connecting member and the pressing member cooperatively define therebetween an oblong receiving space for receiving the cylindrical rod therein.

Abstract: A bicycle hub unit includes a hub shell with an axial bore which has a first axial end portion and a second axial end portion opposite to the first axial end portion, A cone has an externally threaded tip portion and a head portion secured to the second axial end portion of the axial bore. A sprocket carrier is supported around the cone for rotation relative thereto in only one direction. The hub shell has an annular series of internal splines formed in the second axial end portion of the axial bore, and a radial inward flange projecting from an inner peripheral surface of the hub shell. A lock nut is disposed entirely within the axial bore and has an internally threaded portion, and an end surface bearing against the flange. The nut has a length shorter than that of the axial bore.

Abstract: A gear selector includes a sleeve member which has an annular flange that extends radially and outwardly from the periphery of one end of the sleeve member. The flange has a circumferential groove to receive a curved member which has a plurality of retaining grooves. The flange further has an annular extension with a guide rail that is formed circumferentially on an external surface, an abutting face, a receiving space, and a notch which interconnects the receiving space and the guide rail. A tubular member has a casing with a retractable projection at one end. When the sleeve member is sleeved rotatably on the tubular member, the retractable projection extends into one of the retaining grooves of the curved member so as to retain the sleeve member at a predetermined position relative to the tubular member. A cable has one end fixed in the tubular member and passes through the notch. The cable encircles the guide rail before being led out of the tubular member.