Wheel speed detecting device
AssigneeHonda Motor Co., Ltd.
InventorShinichiro ISHIDA
Life of this patent
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Abstract
A wheel speed detecting device includes a countermeasure against the entrance of muddy water. An annular recess groove is provided in an outer circumference of an end portion of a hub on a sensor side. A cup-shaped flange portion extends from the sensor supporting member with the flange portion covering the annular recess groove while maintaining a predetermined gap T1 between the flange portion and the outer circumference of the end portion of the hub. Muddy water heads toward a multi-pole magnet ring by running through the gap T1 formed between the flange portion and the outer circumference of the hub. However, the entrance of muddy water can be effectively prevented by making the gap T1 small. Thus, muddy water that enters the gap T1 is trapped in the annular recess groove.
Claims20
A wheel speed detecting device comprising:
- a multi-pole magnet ring operatively mounted on a bearing fitted into a hub of a wheel;
- a sensor operatively mounted relative to a swing arm or a front fork via a sensor supporting member at a portion facing the multi-pole magnet ring;
- said wheel speed detecting device detecting the multi-pole magnet ring, which rotates together with the wheel, by using the sensor, and thereby detecting a rotation speed of the wheel from the detection information obtained by the sensor;
- an annular recess groove provided in an outer circumference of an end portion of the hub on a side closer to the sensor;
- and
- a cup-shaped flange portion extending from the sensor supporting member, the cup-shaped flange portion covering the annular recess groove while maintaining a predetermined gap between the cup-shaped flange portion and the outer circumference of the end portion of the hub.
A wheel speed detecting device comprising:
- a multi-pole magnet ring operatively mounted on a bearing adapted to be fitted into a hub of a wheel;
- a sensor adapted to be operatively mounted relative to a support facing the multi-pole magnet ring;
- said wheel speed detecting device detecting the rotation of the multi-pole magnet ring by using the sensor, and thereby detecting a rotation speed of the multi-pole magnet ring from the detection information obtained by the sensor;
- an annular recess groove provided in an outer circumference of an end portion of the hub on a side closer to the sensor;
- and
- a cup-shaped flange portion extending from the sensor supporting member, said cup-shaped flange portion covering the annular recess groove while maintaining a predetermined gap between the cup-shaped flange portion and the outer circumference of the end portion of the hub.
Dependencies are inferred from the claim text.