A bicycle stem bolt hidden structure is provided. The bicycle stem bolt hidden structure includes a base, a connecting member and a cap. The base includes a handlebar side on one end and a tube-through hole on the other end. The connecting member is movably disposed on one side of the tube-through hole; wherein the connecting member has a threaded hole and an annular peripheral groove; and The cap includes a plurality of buckles annularly disposed on one side of the cap; wherein the cap covers the connecting member, and the plurality of buckles engage with the annular peripheral groove, so that the cap and the connecting member forms a bolt hidden space. In use, the plurality of buckles engage the annular peripheral groove, so that the exposed bolt can be hidden in the bolt hidden space.
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.
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.
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.
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.
B60B 1/02 - Wheels with wire or other tension spokes
B60B 7/00 - Wheel cover discs, rings, or the like, for ornamenting, protecting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall
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.
F16B 2/06 - Clamps, i.e. with gripping action effected by positive means other than the inherent resistance to deformation of the material of the fastening external, i.e. with contracting action
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.
