Pole wheel on a vehicle wheel
A pole wheel is provided. The pole wheel can be mounted on a brake disk of a vehicle wheel brake. The pole wheel has apertures which are uniformly distributed over its circumference and which are spaced apart from one another by radial webs. The pole wheel has an axially protruding bulge radially above its apertures and radial webs.
1. An electronic monitoring system for the angular positon and/or the rotational speed of a wheel during operation of a vehicle, the monitoring system comprising:
a rotational speed sensor and a pole wheel arranged axially across from the rotational speed sensor, the pole wheel being mountable on a brake disk of a vehicle wheel brake, wherein the pole wheel has apertures which are uniformly distributed over its circumference and spaced apart from one another by radial webs, wherein the pole wheel has an axially protruding bulge radially above the apertures and the radial webs, wherein a front end face of the rotational speed sensor is placed on the axially protruding bulge of the pole wheel, wherein the axially protruding bulge extends axially to define an air gap between the radial webs of the pole wheel and the front face of the rotational sensor.
2. The monitoring system according to claim 1 , wherein the radial webs and/or the apertures are pulse generators, which follow one another in the circumferential direction of the pole wheel, for the rotational speed sensor which is arranged in a positionally fixed manner with respect to the pole wheel.
3. The monitoring system according to claim 2 , wherein the rotational speed sensor bears elastically on the axially protruding bulge.
4. The monitoring system according to claim 1 , wherein the radial webs are connected in one piece to a radially outer axial flange of the pole wheel and to a radially inner axial flange of the pole wheel, and wherein the radially outer axial flange and/or the radially inner axial flange are connected in one piece to a radially bent-off radial flange for fastening to a radial bearing surface of the brake disk.
5. The monitoring system according to claim 4 , wherein the radial bearing surface is arranged in the brake disk in an axially recessed manner, and wherein adjacent to the radial bearing surface, a radially inwardly open, circular groove is formed in the brake disk for receiving a circlip which secures the pole wheel to the brake disk.
6. The monitoring system according to claim 4 , wherein the axially protruding bulge is formed, at the transition from the radially outer axial flange to the radial webs, as an integrally formed, peripheral projection, and wherein the axial extent of the axially protruding bulge corresponds to the width of the air gap between i) surfaces of the radial webs that face the rotational speed sensor and ii) the front end face of the rotational speed sensor.
7. The monitoring system according to claim 1 , wherein the pole wheel is produced as a sheet-metal formed part with punched-out apertures.
8. The monitoring system according to claim 1 , further defined as an antilocking system.
9. The monitoring system according to claim 1 , wherein the radial webs are connected in one piece to a radially outer axial flange and to a radially inner axial flange, and wherein the radially outer axial flange and/or the radially inner axial flange are connected in one piece to a radially bent-off radial flange for fastening to a radial bearing surface of the brake disk.