A motor vehicle has a passenger compartment for at least one vehicle user and has at least one sensor device for detecting a location of the vehicle user in the passenger compartment. At least one retaining device is used to fix the vehicle user in his/her location. A control device is provided to activate the at least one retaining device according to a signal of at least one impact sensor of the motor vehicle. The at least one retaining device is designed to fix the vehicle user in a location in the passenger compartment different from a vehicle seat of the motor vehicle. A method operates such a motor vehicle.

A vehicle and a method of controlling the vehicle may include a seat belt apparatus to reduce the tension of the seat belt in the normal situation in which the collision does not occur by appropriately adjusting the tension of the seat belt based on the driving state of the vehicle, providing convenience to a passenger. In the collision situation, the safety of the passenger may be ensured by sufficiently increasing the tension of the seat belt. The vehicle according to an exemplary embodiment of the present invention includes: a seat belt provided to adjust a tension; a driving assistance device configured to obtain vehicle driving information for assisting a driving of the vehicle; and a controller coupled to the driving assistance and configured to adjust the tension of the seat belt to correspond to a driving state of the vehicle based on the vehicle driving information obtained through the driving assistance device.

A webbing winding device includes a spool, a sensor lever, and a solenoid. In a state where the sensor lever is disposed at the first position, the rotation in the drawing-out direction of the spool is enabled, and in a state where the sensor lever is disposed at the second position, the rotation in the drawing-out direction of the spool is locked. When the solenoid is actuated, the sensor lever is displaced from the first position to the second position. The sensor lever is provided with a thinned groove being deformed when a part of the sensor lever disposed at the second position is pressed toward the first position, the thinned groove allowing displacement toward the first position of the part of the sensor lever.

A webbing winding device includes a spool, a sensor lever, and a solenoid. In a state where the sensor lever is disposed at the first position, the rotation in the drawing-out direction of the spool is enabled, and in a state where the sensor lever is disposed at the second position, the rotation in the drawing-out direction of the spool is locked. When the solenoid is actuated, the sensor lever is displaced from the first position to the second position. The sensor lever is provided with a thinned groove being deformed when a part of the sensor lever disposed at the second position is pressed toward the first position, the thinned groove allowing displacement toward the first position of the part of the sensor lever.

A belt retractor device for a vehicle comprises a first device component (12), a second device component (14) and a detent mechanism (16) including a first detent element (26) and a second detent element (28). The first detent element (26) has at least two stops (58) which are offset from each other in the radial direction and in the axial direction relative to a mounting axis (20). The second detent element (28) includes a detent edge (40) configured to engage in one of the stops (58) of the first detent element (12) and to prevent the first device component (12) and the second device component (14) from moving relative to each other against the mounting direction of the mounting axis (20).

In a webbing take-up device, an angle from one end portion toward another end portion of a second clutch spring in a direction of winding of a coil portion from the one end portion toward the another end portion of the second clutch spring is 270°. Therefore, in a case in which the one end portion of the second clutch spring is rotated toward a side of the direction of the winding of the coil portion, one end side portion of the second clutch spring is displaced so as to bulge-out toward a side opposite to a side toward which another end side portion bulges-out.

In a webbing take-up device, an angle from one end portion toward another end portion of a second clutch spring in a direction of winding of a coil portion from the one end portion toward the another end portion of the second clutch spring is 270°. Therefore, in a case in which the one end portion of the second clutch spring is rotated toward a side of the direction of the winding of the coil portion, one end side portion of the second clutch spring is displaced so as to bulge-out toward a side opposite to a side toward which another end side portion bulges-out.

An automatic seat belt retractor includes a belt reel configured to wind a seat belt and a sensor configured to permanently record a rotational speed of the belt reel. The sensor cooperates with an element that is speed-coupled to the belt reel to record the rotational speed. The automatic seat belt retractor includes a brake unit configured to decelerate the seat belt being unwound from the belt reel with a restraining force and a control module configured to control the brake unit with respect to the restraining force as a function of the rotational speed.

An automatic seat belt retractor includes a belt reel configured to wind a seat belt and a sensor configured to permanently record a rotational speed of the belt reel. The sensor cooperates with an element that is speed-coupled to the belt reel to record the rotational speed. The automatic seat belt retractor includes a brake unit configured to decelerate the seat belt being unwound from the belt reel with a restraining force and a control module configured to control the brake unit with respect to the restraining force as a function of the rotational speed.

A seatbelt retractor that includes a locking mechanism to prevent rotation of a spool in an extracting direction, a ratchet gear 7 and a locking gear 30 that integrally rotate with the spool, a clutch 50 that moves a pawl 9 from a rest position to an engaging position with respect to the ratchet gear 7, a clutch biasing member that biases the clutch 50 in a retracting direction and in a extracting direction, and a connecting mechanism to connect the clutch 50 to the locking gear 30. When extraction of the webbing is locked, a direction of biasing to rotate of the clutch 50 is maintained in the extracting direction so that the amount of retraction of the webbing required to release the lock is reduced to achieve quick release of the lock.