An occupant restraint system for retaining an occupant in a vehicle seat includes a support extending adjacent a back of the vehicle seat so that the back of the vehicle seat extends between the occupant and the support. At least one strap has first and second ends attached to the support. The at least one strap extends around the occupant and the back of the seat so that the back of the vehicle seat and the occupant are between the support and the at least one strap.

A winding drum used for winding a safety belt extends in the axial direction and is rotatably supported in a frame of a retractor. A gear mechanism is installed at one side of the winding drum through a force limiting mechanism and comprises a stop wheel and a ball gear which are riveted and fixedly connected in the axial direction. The stop wheel is rotatably installed on the frame, and the ball gear comprises a penetrating shaft hole. The force limiting mechanism is inserted into the shaft hole in the axial direction and both ends of the force limiting mechanism are respectively connected with the winding drum and the gear mechanism to prevent passengers from being excessively restrained by realizing the force limiting function. The gear mechanism and the force limiting mechanism are directly assembled to the winding drum, with simple steps and few independent components.

A winding drum used for winding a safety belt extends in the axial direction and is rotatably supported in a frame of a retractor. A gear mechanism is installed at one side of the winding drum through a force limiting mechanism and comprises a stop wheel and a ball gear which are riveted and fixedly connected in the axial direction. The stop wheel is rotatably installed on the frame, and the ball gear comprises a penetrating shaft hole. The force limiting mechanism is inserted into the shaft hole in the axial direction and both ends of the force limiting mechanism are respectively connected with the winding drum and the gear mechanism to prevent passengers from being excessively restrained by realizing the force limiting function. The gear mechanism and the force limiting mechanism are directly assembled to the winding drum, with simple steps and few independent components.

An occupant restraint system for retaining an occupant in a vehicle seat includes a support extending adjacent a back of the vehicle seat so that the back of the vehicle seat extends between the occupant and the support. At least one strap has first and second ends attached to the support. The at least one strap extends around the occupant and the back of the seat so that the back of the vehicle seat and the occupant are between the support and the at least one strap.

A system includes a coupler with a first arm and a second arm. The first and second arms configured to couple to a roll cage. A first end may include a first recessed portion and a first aperture. A third end may include a second recessed portion and a second aperture. The first and third ends may contact each other and be secured together via a first fastener that passes through the first aperture and the second aperture. Further, the first recessed portion and the second recessed portion may receive a second fastener therebetween that may receive a latch plate of a safety belt or safety harness to maintain it in an upward position.

A system for securing a restraint system includes a retractor enclosing a spool, a sensor coupled to the spool, and a motor coupled to the spool and configured to rotate the spool about a spool rotation axis. The system also includes webbing configured to be wound and unwound from around the spool. An automatic locking retractor mode is enabled and disabled to selectively and automatically lock the retractor to prevent rotation of the spool when a predetermined length of the webbing is unwound from the spool.

A system for securing a restraint system includes a retractor enclosing a spool, a sensor coupled to the spool, and a motor coupled to the spool and configured to rotate the spool about a spool rotation axis. The system also includes webbing configured to be wound and unwound from around the spool. An automatic locking retractor mode is enabled and disabled to selectively and automatically lock the retractor to prevent rotation of the spool when a predetermined length of the webbing is unwound from the spool.

Disclosed herein is an infant seat belt device. The infant seat belt device includes: a waist belt configured to completely surround the waist of an infant in a single circle; a first seat belt unit configured to be selectively coupled to and separated from one side of the waist belt in the state of having been fastened to a seat on which the infant sits; and a second seat belt unit configured to be selectively coupled to and separated from the other side of the waist belt in the state of having been fastened to the seat on which the infant sits.

An electrically releasable buckle assembly (12) for a motor vehicle restraint (10) may include latch components (18) configured to releasably engage a tongue member (14B) of the motor vehicle restraint (10), a release button (16) operatively coupled to the latch components (18), the release button (16) having a latched position in which the latching components engage the tongue member (14B) and a release position in which the latch components (18) release the tongue member (14B), an electrical energy source (32), at least one shape memory alloy component (26) operatively coupled to the release button (16), the at least one shape memory alloy component (26) responsive to heating thereof by electrical energy supplied by the source (32) to a temperature at or above a transition temperature thereof to move the release button (16) from the latched position to the release position, and means (34) for selectively supplying electrical energy from the electrical energy source (32) to the at least one shape memory alloy component (26).

Four-point seat belt comprising two thoracic branches configured to anchor the chest of a user to a backrest of a vehicular seat; two abdominal branches configured to girdle and anchor the waist of the user to the vehicular seat; at least one damping device configured to be activated upon exceeding a first predetermined value of a tension force imparted by the user to the belt; wherein the damping device is configured to cause, upon its activation, a controlled advancement of the chest of the user while limiting the acceleration of the head of the user.