A seat belt take-up control system includes: a first belt-take-up unit mounted at a child seat, the first belt-take-up unit taking up a seat belt of a vehicle seat and applying a predetermined tension at a time of fastening the seat belt; a belt lock unit that prevents pulling out of the seat belt in a state which the seat belt has been taken up by the first belt-take-up unit; and an second belt-take-up unit that, in a state in which pulling out of the seat belt has been locked by the belt lock unit, takes up the seat belt and applies a predetermined tension after the seat belt is fastened in at least one of a case in which pulling out of the seat belt is detected or a case in which a predetermined period of time has elapsed.

A seat belt take-up control system includes: a first belt-take-up unit mounted at a child seat, the first belt-take-up unit taking up a seat belt of a vehicle seat and applying a predetermined tension at a time of fastening the seat belt; a belt lock unit that prevents pulling out of the seat belt in a state which the seat belt has been taken up by the first belt-take-up unit; and an second belt-take-up unit that, in a state in which pulling out of the seat belt has been locked by the belt lock unit, takes up the seat belt and applies a predetermined tension after the seat belt is fastened in at least one of a case in which pulling out of the seat belt is detected or a case in which a predetermined period of time has elapsed.

A seatbelt assembly and method of operating a seatbelt includes allowing webbing to slide between a lap portion and a torso portion through an unlocked weblock of a tongue assembly; and upon forces exerted by an occupant on the webbing, the weblock locking the webbing from movement between the lap and torso portions while increasing tension in the lap portion via the tongue assembly.

Methods and mechanisms for a shoulder belt assembly for a vehicle are provided. The shoulder belt assembly includes a shoulder belt mechanically coupled to a seat in the vehicle, a control module operationally coupled to the shoulder belt and a vehicle management system, the control module configured to detect current movement of the vehicle and passenger information for a passenger in a seat, identify an event, and generate a customized control signal that is a function of the current movement of the vehicle and a physical characteristic of the passenger in the seat. The shoulder belt assembly also has a load limiting mechanism configured to respond to the control signal by, causing a fold in the shoulder belt, the fold having the characteristics of (i) being oriented width-wise, and (ii) having a substantially uniform fold depth; and holding the fold in accordance with the control signal.

Methods and mechanisms for a shoulder belt assembly for a vehicle are provided. The shoulder belt assembly includes a shoulder belt mechanically coupled to a seat in the vehicle, a control module operationally coupled to the shoulder belt and a vehicle management system, the control module configured to detect current movement of the vehicle and passenger information for a passenger in a seat, identify an event, and generate a customized control signal that is a function of the current movement of the vehicle and a physical characteristic of the passenger in the seat. The shoulder belt assembly also has a load limiting mechanism configured to respond to the control signal by, causing a fold in the shoulder belt, the fold having the characteristics of (i) being oriented width-wise, and (ii) having a substantially uniform fold depth; and holding the fold in accordance with the control signal.

A pre-tensioner for a safety belt of vehicles is provided. The pre-tensioner for a safety belt of a vehicle that is disposed in a side sill of the vehicle and that operates to pull the safety belt by pushing a piston into a tube by a high pressure gas of a gas generator using explosive power of gunpowder that is configured at one side of a bracket in a state in which the piston is connected to the safety belt through a wire within the tube including: internal and external weldnuts that are fixed to each one side of internal and external side surfaces of the side sill, wherein by penetrating the side sill in a vehicle width direction by forming a screw at an external circumference of both end portions of the tube, the both end portions are engaged with the internal and external weldnuts, respectively.

A pre-tensioner for a safety belt of vehicles is provided. The pre-tensioner for a safety belt of a vehicle that is disposed in a side sill of the vehicle and that operates to pull the safety belt by pushing a piston into a tube by a high pressure gas of a gas generator using explosive power of gunpowder that is configured at one side of a bracket in a state in which the piston is connected to the safety belt through a wire within the tube including: internal and external weldnuts that are fixed to each one side of internal and external side surfaces of the side sill, wherein by penetrating the side sill in a vehicle width direction by forming a screw at an external circumference of both end portions of the tube, the both end portions are engaged with the internal and external weldnuts, respectively.

In a load limiting device (10), especially for a seat belt in a vehicle, comprising a controllable braking device (16) which has a fluid-filled compartment (24) including a conduit (34) through which the fluid (23) can flow, an element to be decelerated (32) which is coupled to the seat belt, at least one sensor (18) for detecting vehicle operating data, especially an acceleration sensor, a sensor (20) for detecting the webbing extension, and a controller (22) for controlling the braking power of the braking device (16) as a function of the vehicle operating data measured and the webbing extension measured, the fluid (23) is a magnetorheological fluid and a control magnet is provided which is adapted to generate a variable magnetic field inside the conduit (34) and to vary the viscosity of the magnetorheological fluid inside the conduit (34).

In a load limiting device (10), especially for a seat belt in a vehicle, comprising a controllable braking device (16) which has a fluid-filled compartment (24) including a conduit (34) through which the fluid (23) can flow, an element to be decelerated (32) which is coupled to the seat belt, at least one sensor (18) for detecting vehicle operating data, especially an acceleration sensor, a sensor (20) for detecting the webbing extension, and a controller (22) for controlling the braking power of the braking device (16) as a function of the vehicle operating data measured and the webbing extension measured, the fluid (23) is a magnetorheological fluid and a control magnet is provided which is adapted to generate a variable magnetic field inside the conduit (34) and to vary the viscosity of the magnetorheological fluid inside the conduit (34).

A pre-tensioner for a safety belt of vehicles is provided. The pre-tensioner for a safety belt of a vehicle that is disposed in a side sill of the vehicle and that operates to pull the safety belt by pushing a piston into a tube by a high pressure gas of a gas generator using explosive power of gunpowder that is configured at one side of a bracket in a state in which the piston is connected to the safety belt through a wire within the tube including: internal and external weldnuts that are fixed to each one side of internal and external side surfaces of the side sill, wherein by penetrating the side sill in a vehicle width direction by forming a screw at an external circumference of both end portions of the tube, the both end portions are engaged with the internal and external weldnuts, respectively.