摘要:
A bicycle brake lever mechanism having a bracket mountable to a bicycle handlebar, a lever mounted for pivotal movement to the bracket and a brake cable connector connected to the lever. The cable connector is connected to the lever via an adjusting mechanism for so that the return position of the brake lever relative to a lever bracket may be adjusted to accommodate various sized hands. Further, the adjusting mechanism allows for adjustment of a lever ratio A which is defined mathematically by the distance between the pivot point of the lever and the pivot point of the cable connector on the lever divided by the distance from a set point on the brake lever to the pivot point of the lever.
摘要:
A brake caliper support structure has a stationary member fixed to a bicycle frame, a support shaft fixed to the stationary member, a brake caliper pivotably supported by the support shaft, a spring having one end thereof engaged with the brake caliper, and an elasticity adjusting device disposed between the brake caliper and spring for adjusting elasticity of the spring. The elasticity adjusting device includes an engaging member and an adjusting screw. The engaging member is rotatable about the support shaft. This support structure further includes a shoulder and a groove formed on the support shaft for restricting displacement of the engaging member on the support shaft.
摘要:
A laminate comprising a layer formed of a cured product obtained by drying an aqueous emulsion composition comprising the following components (A), (B), (C) and (D), and an adherend; (A) a copolymer which comprises at least one structural unit selected from the group consisting of a structural unit derived from ethylene, a structural unit derived from propylene and a structural unit derived from linear α-olefin having 4 or more carbon atoms, and a structural unit derived from a vinyl compound represented by the formula (I); CH2═CH—R (I) wherein R represents a secondary alkyl group, a tertiary alkyl group or an alicyclic hydrocarbon group, and in which the content of the structural unit derived from the vinyl compound represented by the formula (I) is 5% by mole or more and 40% by mole or less, or a modified copolymer obtained by graft polymerizing an α,β-unsaturated carboxylic acid compound to the above-mentioned copolymer, (B) a copolymer obtained by graft polymerizing an α,β-unsaturated carboxylic acid compound to a copolymer which comprises at least one structural unit selected from the group consisting of a structural unit derived from ethylene, a structural unit derived from propylene and a structural unit derived from linear α-olefin having 4 or more carbon atoms, and which may contain a structural unit derived from the above-mentioned vinyl compound represented by the formula (I), and in which the content of the structural unit derived from the vinyl compound represented by the formula (I) is less than 5% by mole, (C) an emulsifier (D) water,
摘要:
An aqueous emulsion comprising the following components (A), (B) and (C): (A) an acrylic resin comprising a structural unit derived from an α,β-unsaturated carboxylic acid, and a structural unit derived from an α,β-unsaturated carboxylic acid ester derived from an aliphatic diol having 1 to 10 carbon atoms and having at least one hydroxyl group bonded to a primary carbon atom or a secondary carbon atom and an α,β-unsaturated carboxylic acid (B) a thermoplastic polymer (C) water.
摘要:
A bicycle pedal system with adaptable pedal thread surfaces includes a pedal (3) having a first tread surface (4) and an adapter (5) attachable to the first tread surface. The adapter defines a second tread surface (7) opposite to a surface thereof facing the first tread surface when the adapter is attached to the first tread surface. The first and second tread surfaces provide different use modes. The first tread surface (4) includes a cleat engaging device (4a) for engaging a cleat, and the second tread surface (7) defines an antislip device (16) suited to treading by a shoe. In an alternative pedal system, the first tread surface (14) defines an antislip device (16) suited to treading by a shoe, and the second tread surface (19) includes a cleat engaging device (20, 21).
摘要:
A brake control apparatus for a bicycle. The appratus has a control lever operatively connected with a control cable for pulling the cable and a force transmission ratio adjuster mechanism for adjusting a force transmission ratio in association with an operation of the control lever. The force transmission ratio is defined as a ratio obtained by dividing an output force from the cable associated with application of a unit input force to a certain lever position of the control lever. With the appratus of the invention, this force transmission ratio is so determined as to have a maximum value at a position during an entire stroke of the lever between a stroke start end and a stroke finish end and the maximum value position is on the side of the finish end after a play stroke on the side of the start end.
摘要:
A self-contained change speed apparatus for use on a bicycle having a fixed shaft, a drive member and a hub body rotatably supported on the fixed shaft, and a change speed device disposed between the drive member and hub body. The change speed device includes a plurality of clutches and a clutch controller. The clutches are subjected to a resistance to disengagement corresponding to a drive torque. The clutch controller includes a shiftable first control member, a spring for storing a shift of the first control member as energy, and a shiftable second control member operable by the spring for operating the clutches. The second control member shifts to disengage the clutches when the first control member shifts and the spring imparts a force greater than the resistance to disengagement for shifting the second control member. The second control member remains stationary when the first control member shifts and the spring imparts a force less than the resistance to disengagement, the second control member being shiftable to disengage the clutches only when the force of the spring exceeds the resistance to disengagement. The clutches are shaped and arranged such that forces for overcoming the resistance to disengagement are substantially the same for all of the clutches.
摘要:
A speed control apparatus for a bicycle for selecting a speed position from a plurality of speed positions based on a wire winding amount. This apparatus includes a fixed element, a displaceable control lever, a takeup element pivotally supported by the fixed element for winding a wire, the takeup element being rotatable to rotate the takeup portion by the displacement of the control lever in a wire winding direction to select one of the speed positions, and a position setting mechanism disposed between the control lever and the fixed element. The position setting mechanism includes a clutch pawl and clutch teeth. The clutch pawl is movable between an engaging position to engage the clutch teeth and a retracted position away from the clutch teeth. The takeup element is retained in a selected speed position by the clutch pawl engaging one of the clutch teeth. This speed control apparatus further includes a hammer for amplifying movement of the clutch pawl to the engaging position and transmitting the movement as a shock. The hammer strikes an apparatus casing acting as a resonant body to produce a sound.
摘要:
A crank mechanism for a bicycle includes a crank axle, a crank arm rotatable with the crank axle, a pedal shaft attached to the crank arm, and a pedal rotatably supported by the pedal shaft. The pedal is also movable to and fro relative to and in directions perpendicular to the pedal shaft.
摘要:
A front derailleur is provided with a first pressing portion having an arc substantially coaxial with the front gears and including a first pressing point where a pressing operation of the chain engaging the small gear is started and a second pressing point where the shifting operation of the chain mounting the intermediate gear is completed when the chain is shifted from the small gear to the intermediate gear. The derailleur is further provided with a second pressing portion positioned radially outwardly of the front gears relative to the first pressing portion for pressing the chain when shifting from the intermediate gear to the large gear. A speed change subsidiary portion is provided between the first pressing portion and the second pressing portion for shifting a pressing operating position from the first pressing portion to the second pressing portion as the shifting operation of the chain proceeds in the second speed change operation, and allowing the chain to incline relative to the front gear in plan view.