Seatbelt apparatus
First Claim
Patent Images
1. A method of controlling a motorized retractor that includes a spool onto which a webbing belt for restraining an occupant is wound;
- a motor operated according to a predetermined signal; and
a clutch mechanism enabling transmission of power from said motor to said spool;
wherein the method comprises the steps of;
operating the motor to cancel power transmission of said clutch mechanism; and
varying the rotating speed or the driving time period of said motor according to the load on said clutch mechanism during the cancelling step.
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Abstract
A method of controlling a motorized retractor includes a spool onto which a webbing belt for restraining an occupant is wound, a motor operated according to a predetermined signal, and a clutch mechanism enabling transmission of power from the motor to the spool. When cancelling power transmission of the clutch mechanism by the operation of the motor, the rotating speed or the driving time period of the motor is varied according to the load on the clutch mechanism.
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Citations
20 Claims
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1. A method of controlling a motorized retractor that includes a spool onto which a webbing belt for restraining an occupant is wound;
- a motor operated according to a predetermined signal; and
a clutch mechanism enabling transmission of power from said motor to said spool;
wherein the method comprises the steps of;operating the motor to cancel power transmission of said clutch mechanism; and varying the rotating speed or the driving time period of said motor according to the load on said clutch mechanism during the cancelling step. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
- a motor operated according to a predetermined signal; and
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13. A motorized retractor comprising:
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a spool onto which a webbing belt for restraining an occupant is wound; a motor operated according to a predetermined signal; a clutch mechanism enabling transmission of power from said motor to said spool; and a control unit for controlling the operation of said motor; wherein said control unit is configured so that when cancelling power transmission of said clutch mechanism by the operation of said motor, the rotating speed and/or the driving time period of said motor are varied according to the load acting on said clutch mechanism. - View Dependent Claims (14, 15, 16)
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17. A seat belt apparatus comprising:
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a webbing belt for restraining an occupant; a tongue slidably supported by said webbing belt; and a buckle fixed to a vehicle body portion and capable of latching with said tongue; a motorized retractor for winding said webbing belt such that said webbing belt is capable of being withdrawn; and wherein the motorized retractor includes; a spool onto which a webbing belt for restraining an occupant is wound; a motor operated according to a predetermined signal; a clutch mechanism enabling transmission of power from said motor to said spool; and a control unit for controlling the operation of said motor; wherein said control unit is configured so that when cancelling power transmission of said clutch mechanism by the operation of said motor, the rotating speed and/or the driving time period of said motor are varied according to the load acting on said clutch mechanism. - View Dependent Claims (18, 19, 20)
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Specification