Seatbelt apparatus
First Claim
Patent Images
1. A seatbelt retractor comprising:
- a spool for retracting and withdrawing a seatbelt;
an electric motor;
a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool; and
a control device for switching states of the power transmission mechanism between a power transmitting-state wherein the spool rotates and a power transmission released-state, wherein the power transmitting-state is released by switching the rotating directions of the electric motor.
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Abstract
A seatbelt retractor may include a spool for retracting and withdrawing a seatbelt, an electric motor, and a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool. The seatbelt retractor may also include a control device for switching the states of the power transmission mechanism between a power transmitting-state wherein the spool rotates and a power transmission released-state. The power transmitting-state may be released by switching the rotating directions of the electric motor.
33 Citations
17 Claims
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1. A seatbelt retractor comprising:
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a spool for retracting and withdrawing a seatbelt;
an electric motor;
a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool; and
a control device for switching states of the power transmission mechanism between a power transmitting-state wherein the spool rotates and a power transmission released-state, wherein the power transmitting-state is released by switching the rotating directions of the electric motor. - View Dependent Claims (2, 3, 4, 5)
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6. A seatbelt apparatus comprising:
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a seat belt retractor including;
a spool for retracting and withdrawing a seatbelt, an electric motor, a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool; and
a control device for switching states of the power transmission mechanism between a power transmitting-state wherein the spool rotates and a power transmission released-state, wherein the power transmitting-state is released by switching the rotating directions of the electric motor; and
a seatbelt connected to the seatbelt retractor for restraining an occupant seated on a motor vehicle seat, wherein the seatbelt retractor is configured to retract and withdraw the seatbelt by using the spool of the seatbelt retractor.
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7. A motor vehicle comprising:
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a vehicle seat;
a seatbelt apparatus including;
a seat belt retractor including;
a spool for retracting and withdrawing a seatbelt, an electric motor, a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool; and
a control device for switching states of the power transmission mechanism between a power transmitting-state wherein the spool rotates and a power transmission released-state, wherein the power transmitting-state is released by switching the rotating directions of the electric motor; and
a seatbelt connected to the seatbelt retractor for restraining an occupant seated on a motor vehicle seat, wherein the seatbelt retractor is configured to retract and withdraw the seatbelt by using the spool of the seatbelt retractor, and a storage space, wherein the seatbelt apparatus is stored in the storage space. - View Dependent Claims (8)
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9. A seatbelt retractor comprising:
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a spool for retracting and withdrawing a seatbelt;
an electric motor;
a power transmission mechanism for enabling the spool to retract and withdraw the seatbelt by transmitting power of the electric motor to the spool; and
a control device for performing a control operation for the power transmission mechanism to be switched among a first power transmitting state wherein the spool rotates at a relatively high speed and by relatively low torque, a second power transmitting state wherein the spool rotates at a relatively low speed and by relatively high torque, and a power transmission released-state wherein the first and second power transmitting states are released, and wherein the control device is configured to release the first power transmitting state by performing the control operation for the electric motor to rotate in a first rotating direction and configured to release the second transmitting state by performing the control operation for the electric motor to rotate in a second rotating direction being contrary to the first rotating direction. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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Specification