Wheel support bearing assembly and anti-skid brake device using the same
First Claim
1. A wheel support bearing assembly for rotatably supporting a wheel relative to an automotive body structure, said bearing assembly comprising:
- an outer member having an inner peripheral surface formed with plural rows of raceways;
an inner member having raceways defined therein in face-to-face relation with the raceways in the outer member;
plural rows of rolling elements accommodated between the raceways in the outer and inner members;
an electric generator for generating an electric power as one of the outer and inner members rotates relative to the other of the outer and inner members; and
a wireless transmitting means for transmitting wireless a signal indicative of a number of revolutions of the wheel that is outputted from the electric generator.
1 Assignment
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Accused Products
Abstract
To provide a wheel support bearing assembly having a capability of detecting the number of revolutions of a wheel, having no risk of breaking of wire outside a vehicle body, capable of reducing the weight and cost of an automotive vehicle. This wheel support bearing assembly for rotatably supporting a wheel 13 relative to a vehicle body structure 12 includes an outer member 1 having its inner periphery formed with plural rows of raceways 6 and 7, an inner member 2 having raceways 8 and 9 confronting respectively to the raceways 6 and 7, and rows of rolling elements 3 accommodated respectively between the raceways. An electric generator 4 for generating an electric power as one of the outer and inner members 1 and 2 rotates relative to the other of the outer and inner members 1 and 2. A signal indicative of the number of revolutions of the wheel 13 outputted from the electric generator 4 is transmitted wireless by mean of a wireless transmitting means 5A.
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Citations
25 Claims
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1. A wheel support bearing assembly for rotatably supporting a wheel relative to an automotive body structure, said bearing assembly comprising:
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an outer member having an inner peripheral surface formed with plural rows of raceways;
an inner member having raceways defined therein in face-to-face relation with the raceways in the outer member;
plural rows of rolling elements accommodated between the raceways in the outer and inner members;
an electric generator for generating an electric power as one of the outer and inner members rotates relative to the other of the outer and inner members; and
a wireless transmitting means for transmitting wireless a signal indicative of a number of revolutions of the wheel that is outputted from the electric generator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
a control circuit installed on a vehicle body structure for controlling the braking force, and a wireless transmitting and receiving means including the transmitting means and a receiving means installed on the vehicle body structure for transmitting and receiving wireless a signal of the sensor, and said transmitting means being capable of transmitting a feeble radio wave by frequency modulating a carrier wave with the signal of the sensor.
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24. An anti-skid brake device provided with a wheel support bearing assembly as set forth in claim 1, wherein the electric generator includes a pulsar ring mounted on a rotary member of a wheel, and a sensor mounted on a wheel support member in face-to-face relation with the pulsar ring and wherein the transmitting means is installed on the wheel support member, said anti-skid brake device being operable to control a braking force in response to a signal indicative of a number of revolution of a wheel that has been detected, said anti-skid brake device comprising:
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a control circuit installed on a vehicle body structure for controlling the braking force, and a wireless transmitting and receiving means including the transmitting means and a receiving means installed on the vehicle body structure for transmitting and receiving wireless a signal of the sensor, and said wireless transmitting and receiving means being of a type capable of transmitting and receiving wireless by means of a magnetic coupling between the transmitting means and the receiving means, a transmitting coil of the transmitting means and a receiving coil of the receiving means being arranged such that respective centers of those coils lie at right angles to an axis of revolution of the wheel and horizontally.
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25. The anti-skid brake device as claimed in claim 23 or 24, wherein the transmitting means makes use of an electric power generated by the electric generator as an electric power source, and further comprising a super capacitor added to an electric power circuit connected with the electric generator of the transmitting means for compensating for reduction in the electric power generated during a low speed revolution of the wheel.
Specification