Rigidity is improved at a part where side frame pieces overlap each other in a side frame. In a vehicle seat provided with a seat back frame, a side frame 10 of the seat back frame has a first side frame piece 20 and a second side frame piece 30 partially overlapping each other in a direction of extension of the side frame 10. The side frame 10 has an overlapping part 40 where both the first side frame piece 20 and the second side frame piece 30 overlap each other. At the overlapping part 40, the side frame pieces overlap each other in a state where a plurality of closed regions 41 and 42 closed by being surrounded by both side frame pieces are formed in a cross section of the overlapping part 40 intersecting with the direction of extension of the side frame 10.

An assembly having an outer component, an inner component, and a ring positioned between the outer component and the inner component, where the ring has at least one radially extending projection adapted to seat within at least one groove in the inner component or outer component, and where the projection is adapted to compress radially to allow rotational or axial movement between the inner component and the outer component upon application of rotational or axial force respectively to at least one of the inner component or the outer component.

An assembly having an outer component, an inner component, and a ring positioned between the outer component and the inner component, where the ring has at least one radially extending projection adapted to seat within at least one groove in the inner component or outer component, and where the projection is adapted to compress radially to allow rotational or axial movement between the inner component and the outer component upon application of rotational or axial force respectively to at least one of the inner component or the outer component.

In a vehicle seat, a side frame of a seat back frame has a front wall that is formed so as to be bent inward continuously from a front edge of a plate-shaped portion and forms a curved region extending vertically from around the rotating shaft and reaching an upper frame, and a rear wall that is formed so as to be bent inward continuously from a rear edge of the plate-shaped portion and forms a curved region extending vertically from around the rotating shaft and reaching the upper frame, and an inner edge of the front wall has a projecting piece that spreads to the inside from a virtual outline corresponding to a shape of the upper frame and is superimposed on the front wall of the upper frame from the rear. This provides a vehicle seat that can contribute to improvement of the work efficiency when assembling a seat back frame.

In a vehicle seat, a side frame of a seat back frame has a front wall that is formed so as to be bent inward continuously from a front edge of a plate-shaped portion and forms a curved region extending vertically from around the rotating shaft and reaching an upper frame, and a rear wall that is formed so as to be bent inward continuously from a rear edge of the plate-shaped portion and forms a curved region extending vertically from around the rotating shaft and reaching the upper frame, and an inner edge of the front wall has a projecting piece that spreads to the inside from a virtual outline corresponding to a shape of the upper frame and is superimposed on the front wall of the upper frame from the rear. This provides a vehicle seat that can contribute to improvement of the work efficiency when assembling a seat back frame.

A seat headrest includes: a pad assembly; a main cover surrounding a rear side of the pad assembly; an upper guide coupled to the main cover and provided with an upward/downward movement guide groove formed in the upper guide and elongated upward/downward; a post stay including an upper portion inserted in the upward/downward movement guide groove; and a post holding guide, in which the lower portion of the post stay is inserted and held and which is held to a seat back frame.

A guide device for a headrest with a guide structure for supporting and guiding an end region of a holding rod and with a trim part for covering an edge region of an opening for the passage of the holding rod in a cushion, wherein the holding rod can be releasably locked by a latch device in at least one position relative to the guide structure. The guide device includes the trim part and the guide structure, wherein the trim part has first fastening components which are engageable with second fastening components of the guide structure.

Among other things, the invention relates to a mounting assembly for a headrest with at least one mounting rod (13a, 13b) having at least one retaining structure (17) that can be mounted on a vehicle seat by at least one mounting assembly (19a, 19b) having a respective seat (14), wherein the seat (14) forms a passage (25) for supporting and guiding the mounting rod (13a, 13b), wherein the mounting assembly (19a, 19b) has a latch assembly (15) that releasably latches the mounting rod (13a, 13b) can be releasably latched in at least one position relative to the seat (14), wherein the latch assembly (15) has at least one latch element (16) that is movable between a latching position and a release position and has a latch formation (21) that can be releasably engaged with at least one retaining structure (22) of the mounting rod (13a, 13b) to prevent movement of the mounting rod in at least one direction (p.sub.1, p.sub.2) along the passage (25).

The particularity is that the latch formation (21) has at least one mating surface (32, 33) that cooperates with a driving surface (34, 35) of the retaining structure (17) in such a way that when rotating the mounting rod (13a) about a longitudinal central axis (m) relative to at least one rotational direction (u.sub.1, u.sub.2), in particular relative to two opposite rotational directions (u.sub.1, u.sub.2), the latch element (16) is entrained.

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 headrest sleeve for assembly to a bracket fixed to a stay for supporting a main body of a headrest. The headrest sleeve includes a sleeve body formed in a tubular shape, a collar-shaped flange extending from one end portion of the sleeve body and disposed so as to be capable of contacting the bracket, a bracket-fitting section extending from the flange toward an opposite side from the sleeve body and configured to be capable of being fitted into a fitting hole formed in the lower bracket, and an anchor clip provided at the bracket-fitting section and configured to undergo elastic deformation and elastic recovery during the fitting of the bracket-fitting section into the fitting hole so as to engage with the bracket from an opposite side from the flange.