Handlebar stem and handlebar stem system
A handlebar stem, in particular for racing bicycle handlebars, comprises a main element which is connected to a handlebar at a front end. The main element is connected to the handlebar stem tube in the area of a rear end. The handlebar stem tube is connectible to a steerer tube such that it is bendable in the longitudinal direction to improve riding comfort.
1. A handlebar stem for racing bicycle handlebars, comprising:
a main element having a handlebar mount at a front end for connection to a handlebar, and
a handlebar stem tube arranged at a rear end opposite the front end and connectible to a steerer tube of a bicycle fork,
wherein the handlebar stem tube comprises a non-circular cross-section,
wherein the cross-section of the handlebar stem tube is of transverse oval shape, and
wherein the handlebar stem tube has a greater flexibility in a longitudinal direction of the main element than transverse to the longitudinal direction.
2. The handlebar stem of claim 1 , wherein the handlebar stem tube has a smaller dimension in a longitudinal direction of the main element than transverse to the longitudinal direction.
3. A handlebar stem system for racing bicycle handlebars, comprising:
a front wheel fork having two fork legs which are connected via a fork bridge, wherein the fork bridge is connected to a steerer tube, a handlebar stem comprising:
a main element having a handlebar mount at a front end for connection to a handlebar, and
a handlebar stem tube arranged at a rear end opposite the front end and connectible to the steerer tube,
wherein the handlebar stem tube comprises a non-circular cross-section, and a receiving opening provided in the steerer tube for receiving the handlebar stem tube, and
wherein the steerer tube comprises a cavity, which surrounds the handlebar stem tube in an area facing in the direction of the main element of the handlebar stem and allows for flexing of the handlebar stem tube in a longitudinal direction of the main element.
4. The handlebar stem system of claim 3 , further comprising a fixing means for connection of the handlebar stem tube to the steerer tube.
5. The handlebar stem system of claim 4 , wherein the fixing means clampingly fixes the handlebar stem tube in the receiving opening.
6. The handlebar stem system of claim 4 , wherein the fixing means comprises a clamping element which is arranged between the handlebar stem tube and the steerer tube.
7. The handlebar stem system of claim 3 , wherein the handlebar stem tube does not completely fill the cavity in a longitudinal direction of the main element.
8. The handlebar stem system of claim 3 , wherein in the area of the cavity at least one of a front side and a rear side of the handlebar stem tube comprises a distance to an inner side of the housing tube.
9. The handlebar stem system of claim 3 , further comprising at least an annular spacing element is arranged between the bottom side of the main element of the handlebar stem and a top side of the steerer tube.
10. The handlebar stem system of claim 9 , wherein the at least an annular spacing element is made of an elastic material.