Seatbelt apparatus
First Claim
1. A seatbelt apparatus, comprising:
- a belt reel around which a belt is wound;
a motor which rotationally drives the belt reel;
a transmitting device which transmits a driving power between the belt reel and the motor;
a controller which drives the motor while controlling an electricity to be supplied to the motor;
a rotation-detection device which detects a rotational position of the belt reel and consumes a varying amount of electrical current depending upon the rotational position of the belt wheel, the rotation-detection device including at least one hall element and a magnetic pole ring with a first pole and a second pole, the magnetic pole ring being rotationally coupled to the belt reel, wherein;
the rotation-detection device outputs, in accordance with rotational position of the belt reel, a plurality of outputs including signals indicating a first state in which the current consumption by the rotation-detection device is larger than a predetermined value because of a close proximity of the at least one hall element to the first pole of the magnetic pole ring, and a second state in which the current consumption by the rotation-detection device is smaller than the predetermined value because of a distant proximity of the at least one hall element to the first pole of the magnetic pole ring; and
the controller executes a first motor-driving process to rotate the motor until the rotation-detection device outputs the signal indicating the second state so as to reduce the current consumption of the rotation-detection device.
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Accused Products
Abstract
This seatbelt apparatus includes: a belt reel around which a belt is wound; a motor which rotationally drives the belt reel; a transmitting device which transmits a driving power between the belt reel and the motor; a controller which drives the motor while controlling an electricity to be supplied to the motor; a rotation-detection device which detects a rotation status of the belt reel. The rotation-detection device outputs, in accordance with a rotation of the belt reel, a plurality of outputs including signals indicating a first state in which a current consumption by the rotation-detection device is larger than a predetermined value, and a second state in which the current consumption by the rotation-detection device is smaller than the predetermined value. The controller executes a first motor-driving process in which the motor is driven based on an output from the rotation-detection device until reaching the second state.
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Citations
6 Claims
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1. A seatbelt apparatus, comprising:
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a belt reel around which a belt is wound; a motor which rotationally drives the belt reel; a transmitting device which transmits a driving power between the belt reel and the motor; a controller which drives the motor while controlling an electricity to be supplied to the motor; a rotation-detection device which detects a rotational position of the belt reel and consumes a varying amount of electrical current depending upon the rotational position of the belt wheel, the rotation-detection device including at least one hall element and a magnetic pole ring with a first pole and a second pole, the magnetic pole ring being rotationally coupled to the belt reel, wherein; the rotation-detection device outputs, in accordance with rotational position of the belt reel, a plurality of outputs including signals indicating a first state in which the current consumption by the rotation-detection device is larger than a predetermined value because of a close proximity of the at least one hall element to the first pole of the magnetic pole ring, and a second state in which the current consumption by the rotation-detection device is smaller than the predetermined value because of a distant proximity of the at least one hall element to the first pole of the magnetic pole ring; and the controller executes a first motor-driving process to rotate the motor until the rotation-detection device outputs the signal indicating the second state so as to reduce the current consumption of the rotation-detection device. - View Dependent Claims (2, 3, 4, 5)
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6. A seatbelt apparatus, comprising:
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a belt reel around which a belt is wound; a motor which rotationally drives the belt reel; a transmitting device which transmits a driving power between the belt reel and the motor; a controller which drives the motor while controlling an electricity to be supplied to the motor; a rotation-detection device which detects a rotation status of the belt reel, wherein; the rotation-detection device outputs, in accordance with a rotation of the belt reel, a plurality of outputs including signals indicating a first state in which a current consumption by the rotation-detection device is larger than a predetermined value, and a second state in which the current consumption by the rotation-detection device is smaller than the predetermined value; the controller executes a first motor-driving process in which the motor is driven based on an output from the rotation-detection device until reaching the second state, and wherein if the controller has detected that the rotation-detection device has shifted to the first state after shifting to the second state by executing the first motor-driving process, then the controller executes a second motor-driving process in which the motor is driven in a backward direction in relation to a rotational direction in the first motor-driving process, until the rotation-detection device reaches the second state.
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Specification