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US 7,251,111 B2Granted
Method of controlling seatbelt retracting device with motor
AssigneeTakata Corporation
InventorsKoji Tanaka, Koji Inuzuka
Life of this patent
Estimating the term…
Abstract
In controlling a seatbelt retracting device having a mechanism for retracting a seatbelt with a motor, a current flowing to the motor is detected, and a rate of increase in the current is calculated. When the rate of increase exceeds a predetermined value, the motor is stopped. When the current exceeds a predetermined value, the motor is stopped as well.
Claims5
A method of controlling a seatbelt retracting device with a motor, comprising:
- supplying electricity to a motor for retracting a seatbelt,
- detecting the electricity flowing to the motor for retracting the seatbelt at a predetermined interval,
- calculating a difference with respect to a value read previously to find a rate of increase in the electricity,
- awaiting a predetermined period since the electricity is supplied to the motor, and
- starting to control the motor including stopping the motor when the rate of increase of the electricity exceeds a predetermined rate.
2 more elements
Dependencies are inferred from the claim text.