Abstract: A device for adjusting a seat height includes a fixation seat, an outer tube, an inner tube received in the outer tube, a cylinder housed in the inner tube, and a piston rod accommodated in the cylinder and combined with the inner tube. The fixation seat is attached to a bicycle seat. The outer tube is adapted to be connected with a bicycle frame. The piston rod can be displaced relative to the cylinder, so that the inner tube is driven by the piston rod to move relative to the outer tube within a displacement stroke, so as to adjust the height of the bicycle seat. In addition, the inner tube can be displaced relative to the piston rod by the rotation of the piston rod, so that the rider can adjust the bicycle seat height according to his own height or specific needs.

Abstract: A bicycle seat adjustment device includes an adjustment device connected to the second end of the inner tube and a first clamp member is fixed to the second end. An adjustment rod movably extends through the first clamp member to define an adjustment distance formed between the first and second clamp members. An expansion member and a resilient member are mounted to the adjustment rod. The expansion member is located in the adjustment distance. The first and second clamp members respectively contact two ends of the expansion member so that the expansion member having its edge contacting the inner periphery of the outer tube. A control device is connected to the clamp unit and has a lever. The control rod is connected between the lever and the adjustment rod. The control rod is pushed by the lever to drive the adjustment rod to move linearly into the inner tube.

Abstract: A flow adjustment and oil path separation structure of a shock absorber includes inner and outer tubes sheathed and linearly contracted and extended with respect to each other and having a base tube module installed in the inner tube and including a first component and a second component sheathed on each other. A primary oil chamber is formed in the first component. A secondary oil chamber is formed between the first and second components. An oil path separation module includes an oil path separator seat with an ON/OFF installing slot, a primary channel, a secondary channel group, a first adjusting hole and a communication channel. A first adjustment module is installed at the first adjusting hole for adjusting the amount of hydraulic oil in the first adjusting hole. An ON/OFF switch module is installed in the ON/OFF installing slot for switching a flow ON/OFF status of the secondary channel group.

Abstract: A cable control device for a bicycle is mounted on a bicycle frame and contains: a clamping assembly, a cable controlling set, a positioning assembly, and a returning set. The clamping assembly includes a first damper and a second damper rotatably. The cable controlling set rotatably is accommodated in a C-shaped accommodation groove of a connecting holder. The cable controlling set includes a body, a rotary lever, and a steel cable. The positioning assembly is coupled with the connecting holder of the clamping assembly and includes at least one fixing portion arranged on the body, wherein the at least one fixing portion has a tilted guiding face and a locking extension, and the cable controlling set is coupled with a connector on which a post extends outwardly. The returning set is connected with the connecting holder and the positioning assembly and includes a return element and a resilient element.

Abstract: A safety valve includes a first part and a second part. The first part has a main chamber, and a sub chamber is defined between the first and second parts. A path split unit includes a base with a recess which communicates with the sub chamber. The base has a main path communicating with the main chamber, and a sub-path unit communicating with a sub chamber. One end of the sub-path unit communicates with the main path. A safety path unit communicates between the sub chamber and the recess and the sub-path unit by a communication path. A switch unit is received in the recess and controls the communication between the main path and the sub-path unit. When a severe and sudden impact is transferred to the suspension device, a portion of liquid in the main path flows into the sub chamber to provide a level of buffering feature.

Abstract: A bicycle seat adjustment device includes a seat tube and a seat post inserted in the seat tube. A base is connected to the top of the seat post. A control unit has an adjustment device located between the seat tube and the seat post to control movement of the seat post. A pivotal unit has a pivotal member, a link and a collar. The pivotal member is pivotally connected between the base and the link. The collar is mounted to the seat post and pivotally connected to the link. A connection unit is pivotably connected to the pivotal member and connected with a seat. When adjusting the seat, the seat is able to be pivoted by cooperation from the pivotal unit simultaneously.

Abstract: A seat post adjustment device includes an outer tube and an inner tube which has the first end thereof inserted into the outer tube, and a seat is connected to the second end of the inner tube. An adjustment unit is connected to the inner tube, the adjustment unit and the inner tube are linearly movable for a travel distance in the outer tube. An end member is connected to the lower end of the outer tube. A restriction unit is located in the outer tube and has a restriction member which has a length and can be cut when needed such that the travel distance of the inner tube in the outer tube is restricted when the adjustment unit contacts the restriction member. When the adjustment unit contacts the restriction member, the minimum height of the second end of the post beyond the outer tube is set.

Abstract: A bicycle seat adjustment assembly includes a fixing member connected to a seat and a lever pivotably connected to the fixing member. An outer tube is connected to a bicycle frame and an inner tube is located in the outer tube. The inner tube is connected to the fixing member. A cylinder is located within the outer tube and the inner tube. The inner tube is connected to the fixing member. A piston rod of the cylinder is connected to the fixing member and is operated by the lever. The cylinder has an end fixed to the outer tube. A sleeve is located at the bottom end of the inner tube, and another sleeve is located between the inner tube and a reception portion of the outer tube to guide movement of the inner tube relative to the outer tube and cylinder.

Abstract: A seat stem adjustment device includes a seat stem received in an outer tube, a control unit connected to a bicycle frame, and a leverage unit located between the outer tube and the control unit. The control unit has a cable which is connected to and driven by a lever. The leverage unit has a top member connected to the outer tube. A first link and a second link are pivotably connected to the top member. The first link contacts the valve rod. The second link has a mediate portion pivotably connected to the top member. The second link is connected to the cable. A resilient member is connected between the top member and the second link. The second link pushes the first link to open or close the hydraulic liquid path when the cable is operated so as to adjust the height of the seat.

Abstract: A height adjustable seat tube includes an outer tube and an inner tube is inserted into the outer tube. An end cap is fixed to the inner tube and a valve unit in the inner tube extends through the end cap and co-movable linearly with the inner tube. An inlet valve is connected to the inner tube. An oil tube is connected between the inlet valve and the valve unit. A first oil room is defined between the oil tube and the valve unit. An oil storage member is connected between a connection member and the end cap. A first air room is defined between the inlet valve, the oil storage member and the inner tube. A second oil room is defined between the oil tube, the oil storage member and the end cap. An oil path is in communication between the first and second oil rooms.

Abstract: A shifting structure for a bicycle is fixed on a handlebar of a bicycle to control a bicycle device and contains a clamping assembly, a rotary shift set, a height adjusting assembly, and a tightness adjusting set. The clamping assembly includes a first retainer, a second retainer, two hollow engaging portions, and a positioning bolt. The rotary shift set includes a rotating seat and a rotation member. The height adjusting assembly includes two retaining portions, each having a central axis line for matching with a central axis line of each engaging portion so that an angle ? is defined between the central axis line of each retaining portion and the central axis line of each engaging portion. The rotating seat has an abutting post, the tightness adjusting set includes a screwing element, a rotatable button, a fitting member, and a steel rope.

Abstract: A shock-absorbing device includes a first cylinder with a first room defined therein and a room is defined in an end of the first cylinder. A second cylinder extends into the first cylinder and has a first piston so as to define a third room and a third room. Hydraulic liquid is filled in the second and third rooms. A first tube and a second tube extending through the first tube are located in the first room. A first path and a second path communicate with the recess. The first and second tubes extend into the second cylinder and are connected to the first piston. When the first and second cylinders are relative moved, the hydraulic liquid is controlled to flow or not flow between the first and second paths so as to absorb different levels of shocks, and the speed that the shock-absorbing device returns can be adjusted.

Abstract: A remote control for a shock absorber has a gripping body with a first positioning element, a pivoting handle and a positioning assembly. The pivoting handle pivotally connects with the gripping body and has a proximal part and a distal part. The proximal part has an abutting surface facing and selectively abutting the gripping body and a core-fastening hole corresponding to the passing hole of the gripping body. The distal part has a communicating recess formed longitudinally through the distal part and also formed in a bottom of the distal part. The positioning assembly is movably mounted in the communicating recess and has a second positioning element exposed from the bottom of the distal part and corresponding to and detachably engaged with the positioning assembly. A rider is able to conveniently control a shock absorber during riding by using the remote control so that facilitates riding.

Abstract: A cylinder assembly includes a piston rod connected to a piston which is movably received in a cylinder and the interior of the cylinder is defined into a first room and a second room by the piston. A first groove and a second groove are respectively defined in the inside and the outside of the piston, and the two grooves are longitudinally aligned with each other. Two seal rings are respectively engaged with the first and second grooves. The first groove includes a first inner surface and the second groove includes a second inner surface. A distance is defined between two respective extension lines of the first and second grooves. Each of the two respective extension lines is defined by extending a line from the first/second inner surface of the first/second groove. The outer diameter of the piston is reduced for being used with a smaller cylinder.

Abstract: A height adjustable seat tube includes an outer tube and an inner tube is inserted into the outer tube. An end cap is fixed to the inner tube and a valve unit in the inner tube extends through the end cap and co-movable linearly with the inner tube. An inlet valve is connected to the inner tube. An oil tube is connected between the inlet valve and the valve unit. A first oil room is defined between the oil tube and the valve unit. An oil storage member is connected between a connection member and the end cap. A first air room is defined between the inlet valve, the oil storage member and the inner tube. A second oil room is defined between the oil tube, the oil storage member and the end cap. An oil path is in communication between the first and second oil rooms.

Abstract: A bicycle seat adjustable device includes an outer tube with an inner tube movably inserted therein and a piston is connected to the inner tube. A valve control device includes an outer path tube in the inner tube, and a lower end of the outer path tube is connected to the piston and a top end of the outer path tube extends toward the inner tube. A movable piston is movably mounted to the outer path tube. An outer oil room and an inner air room are defined between the inner tube and the outer path tube. A valve unit is connected to the inner path tube to form an inner oil room and a path which communicates with the outer oil room and the inner oil room, and controlled by the valve unit. The inner tube and the inner path tube increases the travel distance of the hydraulic oil.

Abstract: A bicycle seat adjustable device includes an outer tube and an inner tube inserted into the outer tube. A piston seat and a clamp unit are connected to the inner tube. A valve unit extends through the piston seat and is located in the inner tube. The valve unit includes a rod extending through the piston seat and reaches the bottom end of the outer tube. A control unit has a control unit connected to the bottom end of the outer tube and an action unit is located outside of the outer tube. The control unit has a push member connected with the rod. The action unit has a cable extending through the outer tube and connected to the push member. A switch is connected to the cable. The push member is indirectly moved to move the rod to control the hydraulic path in the piston seat by pulling the cable.

Abstract: A bicycle seat tube assembly includes an outer tube and an inner tube is movably inserted into the outer tube. A valve unit has a first end fixed to the first end cap and a second end of the valve unit is inserted into the inner tube so as to define the interior space of the inner tube into a first oil room and a second oil room. The valve unit regulates volume of oil between the first and second oil rooms. A restriction unit includes a flange on the inner periphery of the inner tube and a stop member located on the valve unit. The stop member contacts the flange when the inner tube moves to a position so as to restrict the inner tube from dropping out from the outer tube.