A bicycle handlebar stem assembly includes a connecting base having a tightening portion sleeved on a front fork stem and a pivot portion connected to the tightening portion, a handlebar base pivoted to the pivot portion and having an opening, a handlebar hole communicating with the opening for penetration of a handlebar, and an accommodation space communicating with the opening, an elastic member disposed in the accommodation space and contacting with the connecting base and the handlebar base, and an adjustment component having one end pressing the elastic member to adjust the pre-pressure state of the elastic member, and the other end with an axial direction staggered from the handlebar and passing through the opening. Thus, a rider can adjust the adjustment component to change the pressing force applied to the elastic member without removing the handlebar, thereby achieving different shock-absorbing effects.

A bicycle handlebar stem assembly includes a connecting base having a tightening portion sleeved on a front fork stem and a pivot portion connected to the tightening portion, a handlebar base pivoted to the pivot portion and having an opening, a handlebar hole communicating with the opening for penetration of a handlebar, and an accommodation space communicating with the opening, an elastic member disposed in the accommodation space and contacting with the connecting base and the handlebar base, and an adjustment component having one end pressing the elastic member to adjust the pre-pressure state of the elastic member, and the other end with an axial direction staggered from the handlebar and passing through the opening. Thus, a rider can adjust the adjustment component to change the pressing force applied to the elastic member without removing the handlebar, thereby achieving different shock-absorbing effects.

A handlebar mount assembly for isolating a cycle handlebar from vibrations emanating from operation of a cycle, the assembly including a bottom bracket assembly configured for attachment to a cycle steering mechanism, a top bracket assembly configured for attachment to the bottom bracket assembly, a pair of polymer sleeves configured for placement around the handlebar, a tension clamp configured for clamping the handlebar and a clamp bushing configured for placement between the tension clamp and the top bracket assembly. The sleeves prevent direct contact between the top bracket assembly and the bottom bracket assembly, and the bushing prevents direct contact between the tension clamp and the top bracket assembly. In this manner, the handlebar mount assembly prevents direct and indirect contact of the steering mechanism to the handlebar through the metal components of the handlebar mount assembly.

A handlebar mount assembly for isolating a cycle handlebar from vibrations emanating from operation of a cycle, the assembly including a bottom bracket assembly configured for attachment to a cycle steering mechanism, a top bracket assembly configured for attachment to the bottom bracket assembly, a pair of polymer sleeves configured for placement around the handlebar, a tension clamp configured for clamping the handlebar and a clamp bushing configured for placement between the tension clamp and the top bracket assembly. The sleeves prevent direct contact between the top bracket assembly and the bottom bracket assembly, and the bushing prevents direct contact between the tension clamp and the top bracket assembly. In this manner, the handlebar mount assembly prevents direct and indirect contact of the steering mechanism to the handlebar through the metal components of the handlebar mount assembly.

A clamp assembly for a handlebar of a vehicle comprises a first clamp body and a second clamp body. The first clamp body and the second clamp body are pivotally mounted around the handlebar. The first clamp body and the second clamp body are hinged at one end using a hinge pin. A resilient means is mounted at the hinge pin and adapted to be coupled with the first clamp body and the second clamp body. The resilient means is adapted to provide a torsional force for moving the first and second clamp body from a closed position to an open position of the clamp assembly. The clamp assembly is adapted with a switch assembly. A stopper pin is configured on the first clamp body to secure the switch assembly on the clamp assembly.

A clamp assembly for a handlebar of a vehicle comprises a first clamp body and a second clamp body. The first clamp body and the second clamp body are pivotally mounted around the handlebar. The first clamp body and the second clamp body are hinged at one end using a hinge pin. A resilient means is mounted at the hinge pin and adapted to be coupled with the first clamp body and the second clamp body. The resilient means is adapted to provide a torsional force for moving the first and second clamp body from a closed position to an open position of the clamp assembly. The clamp assembly is adapted with a switch assembly. A stopper pin is configured on the first clamp body to secure the switch assembly on the clamp assembly.

A bicycle handlebar stem or stem/handlebar assembly has an inclined linear travel approximately 45 degrees from horizontal. This inclined path mimics a rider's natural arm inclination and pitching moment. 45 degrees is nearly ideal for most dropped bar road bicycles but different style bicycles may have an ideal angle between 30 and 60 degrees.

A handle weight mounting structure of a straddle-type vehicle which achieves a simple structure and thereby enables a reduction of variation in the vibration isolating performance and a cost reduction. A fastening bolt includes a shank portion in which an external thread portion to be screwed and joined to the inner face of a handle pipe is formed; and a head portion which is formed on an end part of the shank portion for pressing the outer weight in the axial direction of the handle pipe, the shank portion includes a lock portion which is designed to couple the outer weight and the inner weight to each other. The lock portion is provided on an end part of the external thread portion opposite from the head portion.

A handle weight mounting structure of a straddle-type vehicle which achieves a simple structure and thereby enables a reduction of variation in the vibration isolating performance and a cost reduction. A fastening bolt includes a shank portion in which an external thread portion to be screwed and joined to the inner face of a handle pipe is formed; and a head portion which is formed on an end part of the shank portion for pressing the outer weight in the axial direction of the handle pipe, the shank portion includes a lock portion which is designed to couple the outer weight and the inner weight to each other. The lock portion is provided on an end part of the external thread portion opposite from the head portion.

A handlebar mount assembly for isolating a cycle handlebar from vibrations emanating from operation of a cycle, the assembly including a bottom bracket assembly configured for attachment to a cycle steering mechanism, a top bracket assembly configured for attachment to the bottom bracket assembly, a pair of polymer sleeves configured for placement around the handlebar, a tension clamp configured for clamping the handlebar and a clamp bushing configured for placement between the tension clamp and the top bracket assembly. The sleeves prevent direct contact between the top bracket assembly and the bottom bracket assembly, and the bushing prevents direct contact between the tension clamp and the top bracket assembly. In this manner, the handlebar mount assembly prevents direct and indirect contact of the steering mechanism to the handlebar through the metal components of the handlebar mount assembly.