A suspension assembly for a bicycle comprises a lower tubular support configured to be received within a steerer tube of a bicycle fork assembly; an upper tubular support configured to be connected to a stem of a steering assembly above an upper end of the steerer tube; and a spring configured to exert a force that biases the upper and lower tubular supports toward an extended position, wherein the upper and lower tubular supports are configured such that the upper tubular support slides longitudinally relative to the lower tubular support adjacent the stem and above a fork crown of the bicycle fork assembly.

A suspension assembly for a bicycle comprises a lower tubular support configured to be received within a steerer tube of a bicycle fork assembly; an upper tubular support configured to be connected to a stem of a steering assembly above an upper end of the steerer tube; and a spring configured to exert a force that biases the upper and lower tubular supports toward an extended position, wherein the upper and lower tubular supports are configured such that the upper tubular support slides longitudinally relative to the lower tubular support adjacent the stem and above a fork crown of the bicycle fork assembly.

An adjustable spacer structure of a bicycle is used for adjusting a height of a stem disposed on a steering tube. The adjustable spacer structure includes a first spacer and a second spacer. The first spacer includes a body and a positioning portion. The body has a ring shape and a first opening, and the steering tube is movably disposed through the first opening. The positioning portion is disposed on the body. The second spacer has a ring shape and a combining portion. The combining portion is detachably connected to the positioning portion, and there is a second opening formed between the first spacer and the second spacer. The stem is abutted against the first spacer.

An impact absorbing mechanism for a wheel is provided. The mechanism has discs that are engaged so that rotation of a first disc causes translational movement of a second disc. A restraining member such as a spring acts against translational movement of the second disc to absorb energy from a head on collision or aggressive braking. Once the mechanism is fully activated, teeth on the first and second discs engage to prevent kick back from the restraining member. In some embodiments, a ratchet mechanism is provided to prevent kick back from the restraining member even when the impact absorbing mechanism is not fully activated.

A bicycle includes a frame, a suspension assembly and a steering assembly. The frame includes a head tube that rotatably receives a front fork assembly. A steerer tube extends axially away from a fork crown of the front fork assembly. The suspension assembly includes an upper tubular support longitudinally slidable relative to a lower tubular support. The upper and lower supports receive a first positive biasing means and a first negative biasing means. The lower and upper supports are respectively connected to the steerer tube and a stem of the steering assembly such that the upper support slides longitudinally relative to the lower support adjacent the stem and above the fork crown.

A bicycle includes a frame, a suspension assembly and a steering assembly. The frame includes a head tube that rotatably receives a front fork assembly. A steerer tube extends axially away from a fork crown of the front fork assembly. The suspension assembly includes an upper tubular support longitudinally slidable relative to a lower tubular support. The upper and lower supports receive a first positive biasing means and a first negative biasing means. The lower and upper supports are respectively connected to the steerer tube and a stem of the steering assembly such that the upper support slides longitudinally relative to the lower support adjacent the stem and above the fork crown.

A suspension and steering assembly is provided for a vehicle. The assembly comprises a steering means mounted on a vehicle frame; a steering mechanism comprising an upper link connected to the steering means; and a steering stem having a top section connected to a lower link of the steering mechanism; a steering tube having an upper and a lower portion; an upper control arm having a first extremity connected to a middle section of the frame, and a second extremity connected to the upper portion of the steering tube; a lower control arm having a first extremity connected to a lower section of the frame, and a second extremity connected to the lower portion of the steering tube; the steering stem mounted inside the steering tube; and a wheel fork having a lower section for receiving a wheel of the vehicle and an upper section connected to the steering stem.

A suspension and steering assembly is provided for a vehicle. The assembly comprises a steering means mounted on a vehicle frame; a steering mechanism comprising an upper link connected to the steering means; and a steering stem having a top section connected to a lower link of the steering mechanism; a steering tube having an upper and a lower portion; an upper control arm having a first extremity connected to a middle section of the frame, and a second extremity connected to the upper portion of the steering tube; a lower control arm having a first extremity connected to a lower section of the frame, and a second extremity connected to the lower portion of the steering tube; the steering stem mounted inside the steering tube; and a wheel fork having a lower section for receiving a wheel of the vehicle and an upper section connected to the steering stem.

A suspension device of a bicycle front fork is installed in a head tube of a bicycle handlebar. The suspension device includes: a cylinder with a bottom fixed to a base of the bicycle front fork and a top passed into the head tube; a piston rod with a top fixed to an inner wall of the head tube and a bottom having a piston and extended into the cylinder; a spring device coupled to the piston rod and having a force to push the piston rod away from the cylinder. The cylinder below the piston has an air chamber communicated with an intake valve of the base. The air pressure of air chamber may be adjusted to adjust the buffering pressure of the spring device, so that a user may adjust the shocking pressure of the front fork.

A suspension device of a bicycle front fork is installed in a head tube of a bicycle handlebar. The suspension device includes: a cylinder with a bottom fixed to a base of the bicycle front fork and a top passed into the head tube; a piston rod with a top fixed to an inner wall of the head tube and a bottom having a piston and extended into the cylinder; a spring device coupled to the piston rod and having a force to push the piston rod away from the cylinder. The cylinder below the piston has an air chamber communicated with an intake valve of the base. The air pressure of air chamber may be adjusted to adjust the buffering pressure of the spring device, so that a user may adjust the shocking pressure of the front fork.