Provided are a pretensioner, a retractor, and a seat belt device that can effectively reduce kinetic energy of an injected power transmission member. A power transmission unit includes a power transmission member that is engageable with external teeth of the ring gear, a pipe that contains the power transmission member, a gas generator that is disposed at an end of the pipe, a piston that receives gas generated from the gas generator to press the power transmission member, a first stopper that is disposed on an upstream side of the power transmission member, a second stopper that is disposed between the power transmission member and the piston, and a pretensioner cover that defines a passage for the power transmission member.

A belt tongue having a tongue body, a clamping element in the tongue body, a belt webbing guided through a cavity in the tongue body and running through a gap between the clamping element and the tongue body. The belt webbing can be moved though the tongue body in an unstressed position and, in a stressed position is brought about by a tensile force on the belt webbing, is clamped on a clamping edge of the cavity by the clamping element that is pivotally mounted in the tongue. Laterally to the clamping element, guide sections are arranged, between which the belt webbing runs, so that the belt webbing in the lateral region of the cavity does not go between the clamping element and the tongue body. The cavity forms cavities laterally from the clamping edge.

A belt fitting for a safety belt device in a vehicle that includes a base segment and an insertion tongue connected thereto, in which base segment a belt eye is provided, through which a belt webbing is guided and divides the belt webbing into a shoulder belt segment and a lap belt segment when the safety belt is worn. The belt fitting has a clamping element movable between a release position, such that the belt webbing is freely movable in sliding contact over at least one belt running surface, and a clamping position, in which the belt webbing is tightly clamped between a clamping stop on the base segment and the clamping element in the event of a load or crash. The belt running surface of the belt fitting has a surface contour, which ensures stable transverse guidance of the belt webbing in the event of a load.

A tongue mechanism for use in an occupant restraint system also having a buckle mechanism and a webbing. The tongue mechanism includes a tongue member configured to selectively engage the buckle mechanism, a body formed over a portion of the tongue member, a slider, and a biasing member configured to laterally bias the slider. The body includes a body contact surface. The slider includes a slider contact surface and is configured to travel along a track between a first free position and a second locking position. When the slider is positioned in the first free position the tongue mechanism is free to slide along the length of the webbing, and when the slider is positioned in the second locking position a portion of the webbing is clamped between the slider contact surface and the body contact surface thereby preventing the tongue mechanism from sliding along the length of the webbing.

A latch plate is selectively latched to, and selectively unlatched from, a buckle. An extender is moved by the latch plate to a retracted position when the latch plate is latched to the buckle and moves to an extended position when the latch plate is unlatched from the buckle.

[Object] To effectively reduce a noise generated during engaging operation of a tongue. [Solution] A slider 13 held in a non-locking position, at which the slider 13 does not lock a latch 9, turns together with the latch 9 and moves so as to enter a space between the latch 9 and the locking pin 10 during operation of the latch 9. A front end 13a of the slider 13 comes in contact with a front end 25a.sub.4 of a damper 24 before coming in contact with a stop 11f of an operation button 11, and the slider 13 moves while compressing a damper spring 26. As a result, the movement of the slider 13 is slowed down. When the front end 13a is in contact with the stop 11f, the slider 13 is positioned in a locking position, at which the slider 13 locks the latch 9 positioned in the latching position. The slider 13 that has been slowed down comes in contact with the stop 11f, reducing the noise generated when the tongue engages with the buckle 7.

A reduction in the durability of a coupling member coupled to a buckle is suppressed. A lift-up buckle device includes a buckle that engages with a tongue inserted through webbing worn by an occupant, and wires that each have a portion fixed to the buckle and that are displaced to move the buckle. The lift-up buckle device also includes a wire guide that includes a guide groove that guides the wires, and a soft lower cover that engages with the wire guide and covers the wires. A dimension of an end portion on the buckle side of the guide groove is set so as to increase on progression toward the buckle side.

A vehicle safety release system effecting an automated release and having, inter alia, a seatbelt, an integrated circuit (control unit), a power source, a transmitter, and a collision detection sensor, is contemplated. The safety release system also contemplates a manual release built to work in tandem with the system's automated release. The safety release system may be operated by both a manual input and the input from one or more collision detection sensors. When a push button is depressed a signal is sent to the control unit to release the seatbelt. Aspects of embodiments of the invention also contemplate access to the seatbelt's base latch to enable removal, if needed.

Adjustable connectors disclosed herein are adapted to connect webbing to a buckle. The webbing can be, e.g., a urethane coated webbing, some other type of coated webbing, or a non-coated webbing. The adjustable connector includes a baseplate, a tongue at a front end of the baseplate, a webbing aperture within the baseplate, first and second walls extending perpendicularly from the baseplate, and first and second slots respectively within the first and second walls. In certain embodiments, the slots are tapered. In certain embodiments, the adjustable connector includes a rotatable lock bar including a central portion having an outer surface and first and second tabs. In certain embodiments, each of the tabs has a cross-section with a major-axis that is greater than a minor-axis that is orthogonal to the major-axis. In certain embodiments, a front edge of the webbing aperture comprises an arced front edge.

In a buckle device, latch rotation shafts of a latch are supported by body shaft receiving portions of a buckle body further to the device rear side than a support shaft that supports a buckle device side of a coupling member. The latch is rotated in one direction about the latch rotation shafts, such that a latch engagement portion of the latch engages with a tongue further toward the device front side than the support shaft. Such a configuration enables a rotation radius of the latch to be suppressed from becoming smaller even if the buckle device is made more compact.