A suspension assembly for a vehicle includes a swing arm having a proximal end configured to be pivotally connected to a frame of the vehicle, and a distal end configured to support a ground-engaging member of the vehicle. The suspension assembly also includes a rocker link pivotally connected to the swing arm about a rocker link pivot axis from which first and second portions of the rocker link extend in divergent directions. The suspension assembly also includes a linking arm configured to be pivotally connected to the frame, and pivotally connected to the first portion of the rocker link. The suspension assembly also includes a shock absorber that is at least one of: pivotally connected to the linking arm, and configured to be pivotally connected to the frame. The shock absorber is pivotally connected to the second portion of the rocker link.

A bicycle comprises a main frame and a suspension assembly coupled to the main frame. The suspension assembly includes a dynamic crank support and a spring mechanism. The dynamic crank support is movable from an uncompressed position to a compressed position. The spring mechanism biases the dynamic crank support toward the uncompressed position. The suspension assembly further comprises a dynamic seat support coupled for movement with the dynamic crank support. For example, the dynamic seat support and the dynamic crank support can be rigidly coupled to each other and cooperatively form one bar of a four-bar linkage. An eccentric assembly is supported by the main frame and rotates about a first axis. The eccentric assembly pivotally supports the dynamic crank support for rotation about a second axis offset from the first axis. The spring mechanism preferably comprises a spring secured between the main frame and the eccentric assembly to rotationally bias the eccentric assembly.

A bicycle comprises a main frame and a suspension assembly coupled to the main frame. The suspension assembly includes a dynamic crank support and a spring mechanism. The dynamic crank support is movable from an uncompressed position to a compressed position. The spring mechanism biases the dynamic crank support toward the uncompressed position. The suspension assembly further comprises a dynamic seat support coupled for movement with the dynamic crank support. For example, the dynamic seat support and the dynamic crank support can be rigidly coupled to each other and cooperatively form one bar of a four-bar linkage. An eccentric assembly is supported by the main frame and rotates about a first axis. The eccentric assembly pivotally supports the dynamic crank support for rotation about a second axis offset from the first axis. The spring mechanism preferably comprises a spring secured between the main frame and the eccentric assembly to rotationally bias the eccentric assembly.

A bicycle comprises a main frame defining a spring mount, a pivot mount, and a reinforcing strut substantially directly connecting the spring mount to the pivot mount. The reinforcing strut is asymmetrically positioned on one side of the central plane. A rear frame is movable relative to the main frame, a pivot link couples the main frame to the rear frame, and a spring assembly couples a portion of the pivot link to the main frame. The pivot link comprises a left link member, a right link member, and a link bridge connecting the left link member to the right link member. Preferably, the link bridge is positioned rearward of a seat tube on the main frame. The rear frame comprises a seatstay bridge connecting a left and right seatstays. The main frame can support a crank assembly having a chainring offset from the central plane on the same side as the reinforcing strut.

The flip-pivot bicycle is a collapsible bicycle, that can be folded by a new method, and belongs into the class of the bicycles foldable about two or more axes. The flip-pivot bicycle consists of a driving-frame-segment (1) comprising the driving-wheel (7), a steering-frame-segment (3), comprising the steering-wheel (6), and a central-frame-segment (2), which connects them. The central-frame-segment (2) and the driving-frame-segment (1) is connected by and can pivot above a pivot-axis (4), which pivot-axis (4) is perpendicular to the plane of the parallelly positioned wheels (6, 7), or forms an angle of maximum 45 degree with this perpendicular. The central-frame-segment (2) and the steering-frame-segment (3) is connected and can pivot by a flip-axis (5), which flip-axis (5) is in the plane of the parallelly positioned wheels (6, 7), or is parallel to this plane, or forms an angle of maximum 45 degree with this plane. The function of the flip-axis (5) is to relocate the wheel distant to the pivot-axis (4) as close (or approximately as close) to the pivot-axis (4) as the other wheel is. Thereby flipping the driving-frame-segment (1) on the central-frame-segment (2) by the flip-axis (5), and offset the original planes of the wheels (6, 7) in the meantime, the two wheels (6, 7) can be folded next to each-other. Beyond the above, the flip-pivot bicycle can be equipped with an extra frame-brace; with central-suspension; with crank-anus with releasable fixing which can be re-fixed also in less than 180 degree to each-other, and/or the with pedals inward; with stem that can be slided into one of the forks or next to it; and with seatpost miming out of the plane of the driving wheel.

A rear fender supporting structure of a saddle-type vehicle includes a rear wheel supported through a swing arm to a body frame, and a rear fender covering a rear upper part of the rear wheel. The rear fender is supported to the swing arm on one side in a left-right direction. The swing arm includes an arm portion extending in a front-rear direction, a through hole provided at a rear end of the arm portion to support an axle, and a split-clamp portion supporting the axle by fastening an upper circular-arc and a lower circular-arc surrounding the through hole with a fastening member. The rear fender is mounted on a front-side fixing portion positioned on a front side of the upper circular-arc and on an upper surface of the arm portion, and on a rear-side fixing portion positioned on a rear side of the lower circular-arc.

In a support structure of a drive shaft in which a power transmission mechanism transmitting the power of a power source and a driving wheel are fixed to a drive shaft rotatably supported by a support portion provided in a vehicle, a female screw portion is formed in the inner peripheral surface of a hollow portion formed at an end portion of the drive shaft. The power transmission mechanism is fixed to the drive shaft by fastening a bolt screwed with the female screw portion. A step portion is provided between a small-diameter portion and a large-diameter portion formed on the outer peripheral surface of the drive shaft. The position in the axial direction of the power transmission mechanism fixed to the small-diameter portion side is regulated by the step portion.

A system for adjusting the damper force on the suspension system of a bicycle is provided. Sensors are placed on the front shock and rear shock to measure the amplitude of displacement or acceleration in the time domain and generate a zenith position, velocity, force, and work based on the measured values. The system calculates a curve fit approximation curve for the relationships of zenith position versus velocity and uses the approximation curves to generate and display recommended damper settings for the front shock and rear shock. Using the data ensures that the bicycle suspension data is balanced, such that the front shock and rear shock respond similarly to the same event.

A system for adjusting the damper force on the suspension system of a bicycle is provided. Sensors are placed on the front shock and rear shock to measure the amplitude of displacement or acceleration in the time domain and generate a zenith position, velocity, force, and work based on the measured values. The system calculates a curve fit approximation curve for the relationships of zenith position versus velocity and uses the approximation curves to generate and display recommended damper settings for the front shock and rear shock. Using the data ensures that the bicycle suspension data is balanced, such that the front shock and rear shock respond similarly to the same event.

The present invention discloses an installation structure for a wheel axle assembly and a wheel fork, a frame and a vehicle. The wheel axle assembly includes a wheel axle; a first bearing, a bushing and a second wheel axle sleeved on the wheel axle successively; and a hub arranged on the outer rings of the first bearing and the second bearing, wherein the bushing is used for spacing apart the first bearing and the second bearing axially a predetermined distance, and the hub is of a sleeve shape and an end thereof arranged on the first bearing expands the outer diameter to form a flange portion for fixing and installing a wheel; and the wheel fork includes a wheel fork body and a frame connection portion formed on an end of the wheel fork body and forming an L shape with the wheel fork body for connecting to a frame, and the wheel axle is fixed on the other end of the wheel fork body in a direction perpendicular to the rim center plane of the wheel.