A headrest is provided including a movable unit that can be shifted to multiple positions in the front-rear direction in a normal mode. A headrest includes first and second headrest pillars, a stationary unit disposed between the first and second headrest pillars, a movable unit movable apart from or close to the stationary unit toward a front or rear direction, an X linkage connecting the stationary unit to the movable unit and including an inside linkage segment and an outside linkage segment rotatably connected each other at a central connecting intersection, and a front-rear locking mechanism including a lock receiver and a locking component engageable with the lock receiver, to lock or unlock the movable unit movable relative to the stationary unit toward the front or rear direction.

A vehicle seat is provided. The vehicle seat comprises construction elements that are movable relative to one another and at least one force transmission element which transmits activation forces and/or stress forces that result from the use of the vehicle seat from one construction element to the other. The force transmission element by way of at least one joint is connected to both construction elements, and conjointly with the at least one joint is an integral component part of at least one of the two construction elements.

A method of assembling a vehicle seat is provided, comprising: providing a seat back frame; forwardly movably connecting a headrest for supporting a head of a seat occupant to the seat back frame; mounting a rear-end collision detector to the seat back frame at a position behind the seat occupant, operatively connecting the rear-end collision detector to the headrest; disposing a link member at a position lateral to the rear-end collision detector; forming a front extending portion that inwardly extends in a right-to-left direction at a front end of a lateral face of the side frame; and forming a rear extending portion that inwardly extends in the right-to-left direction; wherein a protruding portion is formed from a portion of the lateral face of the side frame that faces at least the part of the bracket, the link support shaft being disposed at a same height as the protruding portion.

A method of assembling a vehicle seat is provided, comprising: providing a seat back frame; forwardly movably connecting a headrest for supporting a head of a seat occupant to the seat back frame; mounting a rear-end collision detector to the seat back frame at a position behind the seat occupant, operatively connecting the rear-end collision detector to the headrest; disposing a link member at a position lateral to the rear-end collision detector; forming a front extending portion that inwardly extends in a right-to-left direction at a front end of a lateral face of the side frame; and forming a rear extending portion that inwardly extends in the right-to-left direction; wherein a protruding portion is formed from a portion of the lateral face of the side frame that faces at least the part of the bracket, the link support shaft being disposed at a same height as the protruding portion.

An adjustment mechanism for a headrest for a seat has a scissor lever. The adjustment mechanism has at least one first lever arm and at least one second lever arm. A compensating lever arm is arranged at at least one lever arm end of each lever arm. A free end of each compensating lever arm has an attachment structure for attaching the compensating lever arm to a body. A lever arm end opposite the compensating lever arm of each lever arm has an attachment structure for attaching the lever arm to a body. A headrest for a vehicle seat, which has a headrest body is also provided.

An adjustment mechanism for a headrest for a seat has a scissor lever. The adjustment mechanism has at least one first lever arm and at least one second lever arm. A compensating lever arm is arranged at at least one lever arm end of each lever arm. A free end of each compensating lever arm has an attachment structure for attaching the compensating lever arm to a body. A lever arm end opposite the compensating lever arm of each lever arm has an attachment structure for attaching the lever arm to a body. A headrest for a vehicle seat, which has a headrest body is also provided.

The invention relates to a self-reset adjusting mechanism, including: a mounting base; an adjusting member rotatably mounted on the mounting base; a first reset member mounted between the adjusting member and the mounting base; a limiting member rotatably mounted on the mounting base, the limiting member being provided with, corresponding to the adjusting member, a plurality of clamping tables at different heights, and the position of the adjusting member being adjusted by clamping the adjusting member on the clamping tables corresponding to the limiting member; and a second reset member mounted between the limiting member and the mounting base, when the limiting member is rotated to the limit position, the second reset member being deformed to produce an acting force in a direction the same as the rotation direction of the limiting member to cause the limiting member to be in the limit position, and in this case, the first reset member resetting the adjusting member and exerting a reset acting force on the limiting member, so that the second reset member is restored and the limiting member is reset. The self-reset adjusting mechanism of the invention simplifies a core mechanism of a headrest while ensuring the strength of the headrest, has a simple structure, occupies a small space, and has a large adjustment range and a high impact resistance strength.

A vehicle may receive sensor data captured by a sensor, determine that the sensor data represents an object in the environment, and determine a collision probability associated with a predicted collision between the vehicle and the object. Based at least in part on the collision probability, a position of a headrest of the vehicle may be determined relative to a head of an occupant of the vehicle. The headrest may be adjusted in one or more directions prior to occurrence of the predicted collision to minimize injury to the occupant due to the collision.

A vehicle may receive sensor data captured by a sensor, determine that the sensor data represents an object in the environment, and determine a collision probability associated with a predicted collision between the vehicle and the object. Based at least in part on the collision probability, a position of a headrest of the vehicle may be determined relative to a head of an occupant of the vehicle. The headrest may be adjusted in one or more directions prior to occurrence of the predicted collision to minimize injury to the occupant due to the collision.

A head restraint of a vehicle seat includes a base element, at least one connection element positioned on the base element for connecting the base element to a backrest of a vehicle seat, a bearing element having a contact surface for contacting a head of a user of the vehicle seat, and a holding element which can be adjusted along a depth axis relative to the base element. The depth axis is oriented perpendicular to the contact surface. The bearing element is connected to the holding element by a damping device, wherein the damping device damps a movement of the bearing element relative to the holding element.