Vehicle seatbelt device

Patent metadata

Field	Value
Publication number	US-2019291685-A1
Application number	US-201916272311-A
Country	US
Kind code	A1
Filing date	Feb 11, 2019
Priority date	Mar 20, 2018
Publication date	Sep 26, 2019
Grant date	—

Abstract

A vehicle seatbelt device includes: a three-point seatbelt, a tongue having a long hole through which an intermediate portion of the seatbelt is inserted, a buckle that has a buckle main body at which the tongue is anchored and a stay that extends from the buckle main body toward a vehicle lower side and is connected to the vehicle seat, a forward tilting mechanism that tilts the stay toward a seat front side at a time of a vehicle collision or at a time a vehicle collision is predicted, and a shoulder pretensioner that pulls in a shoulder belt of the seatbelt at a time of a vehicle collision, wherein a lower end portion of the buckle main body and an upper end portion of the stay are connected rotatably around an axis along a seat transverse direction.

First claim

What is claimed is:

1 . A vehicle seatbelt device, comprising:
a three-point seatbelt that restrains a vehicle occupant seated in a vehicle seat; a tongue having a long hole through which an intermediate portion of the seatbelt is inserted; a buckle that is disposed at a side of the vehicle seat, and that has a buckle main body at which the tongue is anchored and a stay that extends from the buckle main body toward a vehicle lower side and is connected to the vehicle seat or to a vehicle body; a forward tilting mechanism that tilts the stay toward a seat front side at a time of a vehicle collision or at a time a vehicle collision is predicted; and a shoulder pretensioner that pulls in a shoulder belt of the seatbelt toward an opposite side from the tongue at a time of a vehicle collision, wherein a lower end portion of the buckle main body and an upper end portion of the stay are connected rotatably around an axis along a seat transverse direction.

2 . The vehicle seatbelt device of claim 1 , wherein the forward tilting mechanism has a gas actuator that includes a gas generating device and that rotates and drives the stay toward the seat front side around a lower end portion of the stay by using pressure from gas generated by the gas generating device.

3 . The vehicle seatbelt device of claim 1 , wherein the forward tilting mechanism has an electric actuator that includes an electric motor and that is configured to rotate and drive the stay in a seat front-rear direction around a lower end portion of the stay by using driving force from the electric motor.

4 . The vehicle seatbelt device of claim 1 , wherein the forward tilting mechanism comprises:
an urging member that urges the stay toward the seat front side around a lower end portion of the stay, and a restricting portion that is configured to assume a restricting state that restricts rotation of the stay toward the seat front side, and a release state that releases the restriction.

5 . The vehicle seatbelt device of claim 1 , wherein:
a lower end portion of the stay is connected to the vehicle seat, the forward tilting mechanism and the shoulder pretensioner are disposed at the vehicle seat, one end portion of the seatbelt is anchored at the vehicle seat, and another end portion of the seatbelt is anchored to a take-up shaft of a retractor that is disposed at the vehicle seat.

6 . The vehicle seatbelt device of claim 1 , wherein an elastic member extends between the buckle main body and the stay.

7 . The vehicle seatbelt device of claim 2 , wherein:
the gas actuator has a cylinder, and a piston that is disposed within the cylinder and that slides owing to pressure from gas generated within the cylinder by the gas generating device, and a wire extends between the piston and the stay.

8 . The vehicle seatbelt device of claim 3 , wherein a gear, which is fixed to an output shaft of the electric motor, is engaged with a gear that is formed at the lower end portion of the stay.

9 . The vehicle seatbelt device of claim 4 , wherein the restricting portion is a solenoid.

10 . The vehicle seatbelt device of claim 1 , wherein the forward tilting mechanism has a control device that operates the forward tilting mechanism before operation of the shoulder pretensioner.

Assignees

• Toyota Motor Co Ltd

Inventors

• Ohno Mitsuyoshi

Classifications

• B60R22/46

  {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

• B60R22/26

  secured to the seat · CPC title

• B60R2022/1806

  for buckles · CPC title

• B60R2022/208

  by automatic or remote control means · CPC title

• B60R22/023

  Three-point seat belt systems comprising two side lower and one side upper anchoring devices (B60R22/022, B60R22/03 take precedence) · CPC title