Seatbelt device
First Claim
1. A seatbelt device comprising:
- a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat; and
a controller for rotating the motor in order to at least retract the webbing and for generating an alarm;
wherein the controller executes a control program for setting a threshold value of alarm generation, and executes either a protracting speed program for determining a protraction speed of the webbing when the passenger tries to fasten the seatbelt device, or a fastening time program for determining a time required to fasten the seatbelt device after a protraction of the webbing has stopped;
wherein the controller controls an ease of alarm generation by altering the threshold value on a basis of at least either the speed determined by the protracting speed program or the time determined by the fastening time program.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a seatbelt device capable of realizing a comfortable seatbelt-wearing environment as well as appropriately securing and protecting a passenger. The seatbelt device is further capable of realizing an immediate escape or rescue of a passenger after a vehicle accident, thereby providing extra safety and a swift escape by protracting the webbing in accordance with the state of the vehicle accident. This seatbelt device is provided with a retractor which uses a motor for retracting and protracting the webbing that secures a passenger to his/her seat, and a controller for rotating the motor and at least retracting the webbing. The controller is capable of altering the protraction mode of the webbing in accordance with the state of the webbing fastened by the passenger.
20 Citations
14 Claims
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1. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat; and
a controller for rotating the motor in order to at least retract the webbing and for generating an alarm;
wherein the controller executes a control program for setting a threshold value of alarm generation, and executes either a protracting speed program for determining a protraction speed of the webbing when the passenger tries to fasten the seatbelt device, or a fastening time program for determining a time required to fasten the seatbelt device after a protraction of the webbing has stopped;
wherein the controller controls an ease of alarm generation by altering the threshold value on a basis of at least either the speed determined by the protracting speed program or the time determined by the fastening time program. - View Dependent Claims (2, 3)
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4. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat; and
a controller for rotating the motor in order to at least retract the webbing and for generating an alarm;
wherein the controller executes a control program for setting a threshold value of alarm generation, and executes a protraction frequency program for determining a webbing protraction frequency while the seatbelt device is fastened;
wherein the controller controls an ease of alarm generation by altering the threshold value on a basis of the protraction frequency determined by the frequency program. - View Dependent Claims (5, 6)
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7. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat;
a first controller for rotating the motor in order to at least retract the webbing; and
a second controller for either generating a collision danger alarm when a distance between a vehicle of the passenger and an object ahead becomes less than a specified value or a dozing alarm by determining an indication of dozing by the passenger of the vehicle;
wherein the first controller alters an amount of slack of the webbing while the webbing is fastened, on a basis of a number of alarm generation times with regard to at least either the collision danger alarm or the dozing alarm.
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8. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat;
a first controller for rotating the motor in order to at least retract the webbing; and
a second controller for either generating a collision danger alarm when a distance between a vehicle of the passenger and an object ahead becomes less than a specified value or a dozing alarm by determining an indication of dozing by the passenger of the vehicle;
wherein the first controller alters a tension of the webbing while the webbing is fastened, on a basis of a number of times of alarm generation with regard to at least either the collision danger alarm or the dozing alarm.
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9. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat;
a first controller for rotating the motor in order to at least retract the webbing; and
a second controller for either generating a collision danger alarm when a distance between a vehicle of the passenger and an object ahead becomes less than a specified value or a dozing alarm by determining an indication of dozing by the passenger of the vehicle;
wherein the first controller alters a retraction power of the webbing while the webbing is fastened, on a basis of a number of alarm generation times with regard to at least either the collision danger alarm or the dozing alarm.
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10. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat;
a first controller for rotating the motor in order to at least retract the webbing; and
a second controller for either generating a collision danger alarm when a distance between a vehicle of the passenger and an object ahead becomes less than a specified value or a dozing alarm by determining an indication of dozing by the passenger of the vehicle;
wherein the first controller generates an alarm by rotating the motor to alternately and repeatedly protract and retract the webbing;
and wherein the first controller alters a vibration cycle of the alarm on a basis of a number of times of alarm generation with regard to at least either the collision danger alarm or the dozing alarm.
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11. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat; and
a controller for rotating the motor in order to at least retract the webbing and for generating an alarm;
wherein the controller executes a control program for setting a threshold value of alarm generation, and executes a seatbelt-fastened-state duration program;
wherein the controller controls an ease of alarm generation by altering the threshold value on a basis of a seatbelt-fastened-state duration determined by the seatbelt-fastened-state duration program. - View Dependent Claims (12)
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13. A seatbelt device comprising:
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a retractor using a motor for retracting and protracting a webbing that secures a passenger to a seat; and
a controller for rotating the motor in order to at least retract the webbing, wherein the controller executes a program for determining a number of times that the seatbelt device in an unfastened state turns into a fastened state; and
wherein the controller alters a retraction power of the webbing on a basis of the number of times a change of state is determined by the program. - View Dependent Claims (14)
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Specification