Abstract: A wind resistance reducing device of a bicycle is disclosed. The wind resistance reducing device includes a windward member, a pasting body and a baking paint layer; one side of the pasting body is a pasting side, and other side of the pasting body is a windward side, and the pasting body includes a pasting layer disposed on the pasting side, and a plurality of granular parts protruded on the windward side. The pasting layer of the pasting body is pasted on the front side of the windward member, so that as least part of the plurality of granular parts face toward a traveling direction of the bicycle. The baking paint layer coats the windward member and the pasting body, and the baking paint layer forms a guide angle corresponding to the position of the gap between the windward member and the pasting body.

Abstract: A bicycle stem includes a stem body and a lower assembly cover. The stem body includes a cabling groove facing downwardly, and a head tube hole and a handle groove disposed near two ends thereof, an end of the cabling groove is in communication with the handle groove and extended along a length direction of the stem body. The handle groove has a groove opening in communication with the cabling groove, and the stem body includes combination parts disposed near the groove opening. The lower assembly cover is combined with the combination parts to enclose the groove opening, so as to secure and support the handlebar assembled in the handle groove. Therefore, the operation of mounting or replacing the stein body between the handlebar having cables inside and the vertical head tube can be completed quickly, and the cables can be accommodated in the stem body.

Abstract: A pasting device for reducing wind resistance of a bicycle is disclosed. The pasting device includes a pasting body; a side of the pasting body is a pasting side, and other side of the pasting body is a windward side, and the pasting body includes a pasting layer disposed on the pasting side, and a plurality of granular parts protruded on the windward side. The plurality of granular parts can form a diversion effect to reduce wind resistance when the bicycle is traveling windward.

Abstract: A bicycle handlebar stem includes a body having a connection portion and a top clamp respectively formed on two ends thereof. The body includes a space defined therein, and an opening communicates with the space and outside of the body. A bottom member has a tongue extending inserted into the opening and the space. A bottom clamp is formed to the bottom member and includes an upward portion extending upwardly and toward the downward portion of the top clamp. A passage is defined between the top clamp, the bottom clamp and the body so as to receive a handlebar. A connection member extends through the body and the tongue to connect the bottom member to the body. Two fasteners extend through the underside of the bottom clamp and are connected to the top clamp.

Abstract: A bicycle front fork adjustment device includes two legs and each leg includes a dropout which includes a first portion and a second portion. The second portion extends from the first portion in a direction away from the first portion. A room is formed in outside of each of the dropouts and located corresponding to the first and second portions. A first hole and a second hole are respectively defined through the inner bottom of the room, and respectively located corresponding to the first and second portions. The room forms an opening via which an adjustment member is adjustably located in the room. The adjustment member includes a passage which is located corresponding to the first or the second hole by adjusting the adjustment member between a first position and a second position in the room.

Abstract: A bicycle front fork adjustment device includes two legs and each leg includes a dropout which includes a first portion and a second portion. The second portion extends from the first portion in a direction away from the first portion. A room is formed in outside of each of the dropouts and located corresponding to the first and second portions. A first hole and a second hole are respectively defined through the inner bottom of the room, and respectively located corresponding to the first and second portions. The room forms an opening via which an adjustment member is adjustably located in the room. The adjustment member includes a passage which is located corresponding to the first or the second hole by adjusting the adjustment member between a first position and a second position in the room.

Abstract: A wheel rim assembly includes a hub with a case and two flanges are formed on two ends of the case. Multiple spoke units are connected between the two flanges of the hub and the inner periphery of the rim. Each spoke unit includes a first connection member and the first end of an X-shaped spoke extends from the first connection member. Each first connection member includes a first recessed area and a second recessed area respectively defined in the outside and the inside thereof. The second recessed area is matched with the flange corresponding thereto. Each first connection member includes an engaging recess and a protrusion. The protrusion of one first connection member is engaged with the engaging recess of the next first connection member. Two covers are respectively connected two ends of the hub. The second end of each spoke is inserted into reception recess of the rim.

Abstract: A wheel rim assembly includes a hub with a case and two flanges are formed on two ends of the case. Multiple spoke units are connected between the two flanges of the hub and the inner periphery of the rim. Each spoke unit includes a first connection member and the first end of an X-shaped spoke extends from the first connection member. Each first connection member includes a first recessed area and a second recessed area respectively defined in the outside and the inside thereof. The second recessed area is matched with the flange corresponding thereto. Each first connection member includes an engaging recess and a protrusion. The protrusion of one first connection member is engaged with the engaging recess of the next first connection member. Two covers are respectively connected two ends of the hub. The second end of each spoke is inserted into reception recess of the rim.

Abstract: A bicycle saddle includes a body having a padding portion and an underside portion. The body includes a front portion and a rear portion. The front portion has a restriction plate connected to the underside portion of the body. A first recess is formed between the restriction plate and the front portion. Two protrusions extend from the underside portion of the rear portion. A second recess is formed in each of the protrusions. A rail unit is connected to the underside portion of the body and includes two rails. Two respective first ends of the two rails are connected to a front connection part. The front connection part of the rail unit is connected to the first recess by adherent. Each rail has a rear connection part formed to the second end thereof The two respective rear connection parts are respectively secured in the two second recesses by another adherent.

Abstract: A bicycle handlebar stem includes a body having a connection portion and a top clamp respectively formed on two ends thereof. The body includes a space defined therein, and an opening communicates with the space and outside of the body. A bottom member has a tongue extending inserted into the opening and the space. A bottom clamp is formed to the bottom member and includes an upward portion extending upwardly and toward the downward portion of the top clamp. A passage is defined between the top clamp, the bottom clamp and the body so as to receive a handlebar. A connection member extends through the body and the tongue to connect the bottom member to the body. Two fasteners extend through the underside of the bottom clamp and are connected to the top clamp.

Abstract: A handlebar adjusting device includes a handlebar stem having a top hole for being connected to a steering tube, and an elongate lateral hole for being connected to a handlebar. An adapter is located in the lateral hole and contacts the handlebar. An urging unit is located in the lateral hole and includes a middle piece, a first piece, a second piece and a bolt. The middle piece has two inclined faces in two ends thereof. The two inclined faces respectively contact the first and second pieces. The bolt extends through the first piece, the two inclined faces of the middle piece and is connected to the second piece. When the bolt is rotated, the first and second pieces move to press against the two inclined faces which is moved radially in the lateral hole to push the adapter to position the handlebar.

Abstract: A bicycle seat includes a support having a base and two rails. A ridge is formed along the periphery of the top of the base so as to define an installation recess between the ridge and the top of the base. The two rails are connected to the underside of the base and spaced apart from each other. A pad is engaged with the installation recess and has a groove defined along the periphery of the underside thereof. The ridge is engaged with the groove to directly connect the pad to the base. A recessed area is defined in the top of the pad to provide comfort to the users.

Abstract: A bicycle seat adjustment device includes a seat post having a support member which has a first slot. A groove is defined in each of two sides of the support member. A support seat has a curved top and two plates extend from the underside of the support seat. The support member is clamped between the two plates. Each plate has a protrusion which is slidably engaged with the groove corresponding thereto. Two bolts extend through the two plates and the first slot. A clamp unit is connected to the top of the support seat so as to clamp a seat. Two fixing bolts extend through the support seat and are connected to the clamp unit. The seat is horizontally adjusted by moving the support seat along the first slot, and angularly adjusted by moving the support seat along the curved plates and the curved top of the support seat.

Abstract: A press-fit device for bicycle stein comprises a main body and two press-fit sets. The main body has a front-fork hole and a handlebar hole arranged at two ends thereof respectively. The front-fork hole and the handlebar hole have a receiving groove respectively for fluidly communicating therewith. Each press-fit set includes a driving block which has a first inclined guiding surface and a through hole with inner threads for passing through the first inclined guiding surface. A guiding block has a second inclined guiding surface and a guiding hole for passing through the second inclined guiding surface. The first and the second inclined guiding surfaces are respectively formed a tapered side and a divergent side. A press-fit block includes a trepanning hole and two inclined end surfaces. A press-fit screw is passed through the guiding hole and the trepanning hole and screwed with the inner threads.

Abstract: A bicycle seat adjustment device includes a seat post having a support member which has a first slot. A groove is defined in each of two sides of the support member. A support seat has a curved top and two plates extend from the underside of the support seat. The support member is clamped between the two plates. Each plate has a protrusion which is slidably engaged with the groove corresponding thereto. Two bolts extend through the two plates and the first slot. A clamp unit is connected to the top of the support seat so as to clamp a seat. Two fixing bolts extend through the support seat and are connected to the clamp unit. The seat is horizontally adjusted by moving the support seat along the first slot, and angularly adjusted by moving the support seat along the curved plates and the curved top of the support seat.

Abstract: A bicycle seat assembly includes a seat with a rail part connected to the underside thereof, the rail part includes a front, rear, left and right supports. There are the rear, left and right supports are located at the rear section of the seat so as to provide proper support to the user. The pressure to the user's bottom is reduced and the user does not need to sit toward the front end of the seat.

Abstract: A bicycle stem, which is adapted to be mounted between a handlebar and a steering tube of a bicycle, includes a body and a clamping member. The body has a clamping end and a connecting end. The connecting end of the body has a through hole for accommodating the steering tube. The body defines a pair of sliding grooves on a top thereof. The clamping member has a hook grip portion and a blade portion extending from one end of the hook grip portion. The blade portion of the clamping member has a pair of sliding protrusions formed on a bottom and slid into the sliding grooves of the body so that the clamping member is slidably mounted to the body. Under this arrangement, the hook grip portion of the clamping member cooperates with the clamping end of the body to clamp the handlebar.

Abstract: A bicycle handlebar assembly, which is adapted to be mounted on a steering tube of a bicycle, includes a handlebar and a stem. The handlebar has an assembling portion and two handle portions integrally extending from opposite ends of the assembling portion. The assembling portion has an arc groove defined in a side thereof. The arc groove of the assembling portion is configured to be assembled with one end of the stem 2. Under this arrangement, the arc groove of the assembling portion is provided for a rider to quickly and simply assemble the handlebar to the stem.