Producing a force to be applied to a seatbelt in response to a deceleration of a vehicle

Patent metadata

Field	Value
Publication number	US-11465583-B2
Application number	US-202117167514-A
Country	US
Kind code	B2
Filing date	Feb 4, 2021
Priority date	Feb 4, 2021
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

A force to be applied to a seatbelt in response to a deceleration of a vehicle can be produced. Information about the deceleration of the vehicle can be received. A cause of the deceleration can be other than in response to a collision of the vehicle with an object. In response to a receipt of the information, a signal to control an actuator to produce the force can be produced. The actuator can be different from any of a pretensioner of a seatbelt assembly, a load limiter of the seatbelt assembly, and a locking mechanism of a retractor of the seatbelt assembly. A measure of the force can be proportional to a measure of the deceleration. The force can be sufficient to limit a forward movement of a person wearing the seatbelt to be less than a specific distance. The signal can be caused to be communicated to the actuator.

First claim

What is claimed is:

1. A system, comprising:
a processor configured to obtain information about a measure associated with a mass of a person wearing a seatbelt and to obtain information associated with an identity of the person wearing the seatbelt, wherein the processor is configured to obtain the information about the measure associated with the mass of the person by obtaining, in response to a receipt of the information associated with the identity of the person, the information about the measure associated with the mass of the person;
a communications device configured to receive information about a deceleration of a vehicle; and
a memory storing:
a force calculation module including instructions that when executed by the processor cause the processor to produce, in response to the information about the deceleration of the vehicle, a signal to control an actuator to produce a force to be applied to the seatbelt, the force being proportional to a measure of the deceleration and the measure associated with the mass of the person, the actuator being different from any of a pretensioner, a load limiter, and a locking mechanism of a seatbelt assembly; and
a communications module including instructions that when executed by the processor cause the signal to be communicated to the actuator.

2. The system of claim 1 , wherein a cause of the deceleration is other than in response to a collision of the vehicle with an object.

3. The system of claim 1 , wherein:
the actuator is a motor; and
the motor is further configured to tighten, in response to an initiation of a motion of the vehicle, the seatbelt to the person wearing the seatbelt.

4. The system of claim 1 wherein the processor is configured to obtain the information about the measure associated with the mass of the person by receiving, from a sensor disposed on the vehicle, the information about the measure associated with the mass of the person.

5. The system of claim 1 further comprising a data store disposed on the vehicle, wherein the processor is configured to obtain the information about the measure associated with the mass of the person by retrieving, from the data store, the information about the measure associated with the mass of the person.

6. The system of claim 1 wherein the information about the measure associated with the mass of the person includes information about a distribution of the mass between an upper body portion of the person and a lower body portion of the person.

7. The system of claim 1 wherein the force to be applied to the seatbelt is a function of the identity of the person wearing the seatbelt.

8. The system of claim 1 , wherein the processor is configured to obtain information about a posture of the person wearing the seatbelt, wherein a measure of the force is proportional to the measure of the deceleration and an adjustment derived from the information about the posture.

9. The system of claim 8 , wherein:
the processor is configured to obtain the information about the posture by receiving, from a sensor disposed on the vehicle, the information about the posture; and
the sensor comprises at least one of a lidar device or an ultrasonic range detector.

10. The system of claim 1 , wherein the communications device is configured to receive the information about the deceleration of the vehicle by receiving the information about the deceleration of the vehicle from at least one of a sensor for a position of a brake pedal of the vehicle, a sensor for a position of a joystick-like control lever of the vehicle, a sensor for a hydraulic pressure of a brake system of the vehicle, a sensor for a state of the brake system, an accelerometer of the vehicle, or an inertial measurement unit of the vehicle.

11. A system, comprising:
a processor configured to obtain information about a measure associated with a mass of a person wearing a seatbelt by receiving, from a cloud computing platform via a communications device, the information about the measure associated with the mass of the person;
the communications device disposed on a vehicle and configured to receive information about a deceleration of the vehicle; and
a memory storing:
a force calculation module including instructions that when executed by the processor cause the processor to produce, in response to the information about the deceleration of the vehicle, a signal to control an actuator to produce a force to be applied to the seatbelt, the force being proportional to a measure of the deceleration and the measure associated with the mass of the person, the actuator being different from any of a pretensioner, a load limiter, and a locking mechanism of a seatbelt assembly; and
a communications module including instructions that when executed by the processor cause the signal to be communicated to the actuator.

12. A system, comprising:
a processor configured to obtain information about a measure of a coefficient of friction between a seatbelt and an item of clothing in contact with the seatbelt;
a communications device configured to receive information about a deceleration of a vehicle; and
a memory storing:
a force calculation module including instructions that when executed by the processor cause the processor to produce, in response to the information about the deceleration of the vehicle, a signal to control an actuator to produce a force to be applied to the seatbelt, a measure of the force being proportional to a measure of the deceleration and the measure of the coefficient of friction, the actuator being different from any of a pretensioner, a load limiter, and a locking mechanism of a seatbelt assembly; and
a communications module including instructions that when executed by the processor cause the signal to be communicated to the actuator.

13. The system of claim 12 , wherein the processor is configured to obtain the information about the measure of the coefficient of friction by obtaining, from a tactile sensor disposed on the seatbelt, the information about the measure of the coefficient of friction.

14. A method, comprising:
obtaining, by a processor, information associated with an identity of a person wearing a seatbelt;
obtaining, by the processor and in response to a receipt of the information associated with the identity of the person, information about a measure associated with a mass of the person;
receiving, by the processor, information about a deceleration of a vehicle;
producing, by the processor and in response to the information about the deceleration of the vehicle, a signal to control an actuator to produce a force to be applied to the seatbelt, the force being proportional to a measure of the deceleration and the measure associated with the mass of the person, the actuator being different from any of a pretensioner, a load limiter, and a locking mechanism of a seatbelt assembly; and
causing, by the processor, the signal to be communicated to the actuator.

15. The method of claim 14 , wherein:
the force to be applied to the seatbelt is sufficient to limit a forward movement, in response to the deceleration, of the person wearing the seatbelt to be less than a specific distance; and
the specific distance is three inches.

16. The method of claim 14 , wherein a measure of the force is proportional to a measure of the deceleration.

17. The method of claim 16 , wherein the deceleration:
occurs for a duration of time, and
varies during the duration of time.

18. A non-transitory computer-readable medium for producing a force to be applied to a seatbelt, the non-transitory

Assignees

• Toyota Res Inst Inc

Inventors

• Kuehner Manuel Ludwig

Classifications

• B60R21/013

  including means for detecting collisions, impending collisions or roll-over · CPC title

• B60R22/3413 Primary

  operating between belt reel and retractor frame (B60R22/4676 takes precedence) · CPC title

• B60R2022/4685

  with means to adjust or regulate the tensioning force in relation to external parameters · CPC title

• B60R22/343

  with electrically actuated locking means {(B60R22/3405 takes precedence)} · CPC title

• B60R22/46 Primary

  {Reels} with means to tension the belt in an emergency {by forced winding up}(electrical circuits for triggering safety arrangements B60R21/01 {; tensioners using reels only guiding the belt during normal use, e.g. splitted reels B60R22/195}) · CPC title