A headrest may be fixed relative to a seat or a bank of seats in a vehicle and can provide multiple stages of deformation in response to a collision event. The headrest can include a resilient member that deforms in response to a first force caused by the collision event. The headrest can also include a frame that deforms in a first manner in response to a second force greater than the first force and in a second manner in response to a third force greater than the second force. Such a headrest can provide improved impact mitigation for occupants, regardless of height and/or weight such that occupants ranging from the 5.sup.th to 95.sup.th percentile in height and/or weight are afforded similar impact mitigation despite a fixed headrest structure. In some examples, multiple such headrests may be conjoined.

Various implementations include seats and related systems for detecting user proximity and controlling one or more functions based on that proximity detection. In particular cases, the seats include capacitive sensors for detecting user proximity. In some particular aspects, an automobile seat includes: a core section; a cover over at least a portion of the core section, the cover having a set of capacitive sensors across a front of the seat; and a processor for processing signals from the set of capacitive sensors to detect a proximity of a user.

A headrest for a vehicle seat may have a first component constructed of an expanded polypropylene material. The first component may have a covering applied to at least a portion thereof. The headrest may also have a second component constructed of the expanded polypropylene material. The second component may have a front portion with a complementary shape to the first component and may least partially interface with the first component. The second component may have a coating disposed on at least a portion thereof.

A headrest assembly may have a connecting member extending between a headrest and a seat back of the headrest assembly. A mechanism may be located in the headrest assembly or the seat back. The mechanism permits selective movement of the headrest with respect to the connecting member.

A height adjustment mechanism for a headrest includes: a locking member configured to be locked with a height adjustment gear, the locking member having a first locking position and a first unlocking position, and the locking member being capable of switching between the first locking position and the first unlocking position; an operating member having an initial position, a first operating position and a second operating position; a safety lock structure configured to lock the locking member in the first locking position, the safety lock structure being movably connected on the operating member; and a driving member, one side of the driving member being slidably connected to the operating member, the other side of the driving member abutting against the locking member.

A system for automatic optimization of an ejection system for an aircraft includes the ejection system having a plurality of adjustable settings. The system further includes a sensor configured to detect weight data corresponding to a weight of a user of the ejection system. The system further includes a controller coupled to the ejection system and to the sensor and configured to adjust at least one of the plurality of the adjustable settings of the ejection system based on the weight data.

A headrest assembly includes a lattice matrix having a plurality of three-dimensional (3D) cells. Each 3D cell of includes a node and a plurality of links outwardly extending from the node. The lattice matrix includes a plurality of sections including a first section having a first overall elastic modulus, a second section positioned adjacent to the first section and having a second overall elastic modulus that is higher than the first overall elastic modulus of the first section, and a third section positioned adjacent to the second section and having a third overall elastic modulus that is higher than the second overall elastic modulus of the second section. The lattice matrix is integrally constructed using an additive manufacturing technique, wherein the 3D cells of each section are provided in various patterns and cured to varying degrees to provide the varying overall elastic moduli of each section of the lattice matrix.

A guide device for a retaining rod of a headrest, having a guide structure forming a channel for guiding and supporting the retaining rod, having a latch device including a latch movable between a latching position and a release position. The latch cooperates with a latch structure of the retaining rod to prevent movement of the retaining rod relative to the guide structure in at least one direction. In the latching position the latch device is engaged with the latch structure of the retaining rod and in the release position the latch is disengaged from the latch structure. The latch device has a locking device movable between a locking position and a disengagement position and has a locking structure which, in the locking position, is in the movement path of the latch to prevent movement from the latching position into the release position and, in a disengagement position, enable movement of the latch into a release position.

A passenger seat headrest includes a frame and a support band. The frame includes a main portion, a first side wing connected to the main portion, and a second side wing connected to the main portion distal from the first side wing. The support band is connected to the frame and extends from the first side wing to the second side wing.

The invention relates to a surface structure (10) for a contact surface or support surface (23) of a vehicle equipment part, in particular for a vehicle head restraint (40) or vehicle armrest, the surface structure (10) being elastically deformable, the surface structure (10) comprising at least one surface body (13, 13a, 13b), each surface body (13, 13a, 13b) being connected to at least one other surface body (13, 13a, 13b) and/or to the vehicle equipment part by means of at least one elastically deformable connecting element (16).