A vehicle seat side pillow mounting structure is provided and belongs to the field of vehicle parts installation. The mounting structure includes: a connection bar, two ends of the connection bar being disposed with mounting parts for mounting side pillows; two clamping heads, slidably assembled on the connection bar along a lengthwise direction of the connection bar and for clamping and being fixed on two insertion rods of a vehicle headrest; and locking mechanisms, respectively disposed between the clamping heads and the connection bar and for locking the clamping heads on or unlocking the clamping heads from the connection bar. The mounting structure does not require special customization, can reduce the purchase cost, can install the side pillows on other types of seats and has the advantage of strong practicability.

A vehicle seat side pillow mounting structure is provided and belongs to the field of vehicle parts installation. The mounting structure includes: a connection bar, two ends of the connection bar being disposed with mounting parts for mounting side pillows; two clamping heads, slidably assembled on the connection bar along a lengthwise direction of the connection bar and for clamping and being fixed on two insertion rods of a vehicle headrest; and locking mechanisms, respectively disposed between the clamping heads and the connection bar and for locking the clamping heads on or unlocking the clamping heads from the connection bar. The mounting structure does not require special customization, can reduce the purchase cost, can install the side pillows on other types of seats and has the advantage of strong practicability.

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.

A sleeve device for a headrest, the device including a sleeve body for insertion into a vehicle seat, the sleeve body including a tubular wall describing an inner axial passage and a rod-engaging portion which is deformable inwardly relative to the tubular wall, the rod-engaging portion including a flexible pad on its external side, wherein the pad is configured to be urged, in use, to force the engaging portion into the axial passage and/or against a rod received within the axial passage.

A sleeve device for a headrest, the device including a sleeve body for insertion into a vehicle seat, the sleeve body including a tubular wall describing an inner axial passage and a rod-engaging portion which is deformable inwardly relative to the tubular wall, the rod-engaging portion including a flexible pad on its external side, wherein the pad is configured to be urged, in use, to force the engaging portion into the axial passage and/or against a rod received within the axial passage.

A headrest device comprises: a headrest support that is pivotable relative to a backrest frame of a vehicle seat, about a first transverse axis; a headrest frame that is pivotable relative to the headrest support about a second transverse axis; and a tilt compensation device for the headrest frame. The compensation device comprises a connecting element in two parts that are pivotable relative to one another, and first and second pivotable guide pins respectively received in a first guide path in the headrest support and in a second guide path formed by the headrest frame. The second part of the connecting element is guided in translation relative to the headrest support in a direction perpendicular to the first axis.

A headrest device comprises: a headrest support that is pivotable relative to a backrest frame of a vehicle seat, about a first transverse axis; a headrest frame that is pivotable relative to the headrest support about a second transverse axis; and a tilt compensation device for the headrest frame. The compensation device comprises a connecting element in two parts that are pivotable relative to one another, and first and second pivotable guide pins respectively received in a first guide path in the headrest support and in a second guide path formed by the headrest frame. The second part of the connecting element is guided in translation relative to the headrest support in a direction perpendicular to the first axis.

A headrest support structure has an upper panel, a collar and a sleeve. The upper panel extends in a width direction of a seatback frame at the upper part. The upper panel has a sleeve support part including upper and lower wall parts facing in a direction perpendicular to the width direction. The sleeve support part is in a U-shape open to a side opposite to a seating side in a longitudinal sectional shape. The upper and lower wall parts have upper and lower holes. The collar is in a tubular shape with a through hole. The collar is arranged between the upper wall part and the lower wall part to have the through hole communicate with the upper and lower holes. The sleeve is inserted through the upper hole, the through hole, and the lower hole. A rod-like leg portion of a headrest is insertable in the sleeve.

A holder is removable from a seatback frame. The seatback frame has a back plate, a top plate extending from an upper portion of the back plate toward a front side, and a fixing plate provided below the top plate and extending from the back plate toward the front side. The top plate has two insertion holes into which two holders can be inserted from above. The fixing plate is configured so as to be able to fix the end portions of the two holders inserted through the insertion holes of the top plate.

A holder is removable from a seatback frame. The seatback frame has a back plate, a top plate extending from an upper portion of the back plate toward a front side, and a fixing plate provided below the top plate and extending from the back plate toward the front side. The top plate has two insertion holes into which two holders can be inserted from above. The fixing plate is configured so as to be able to fix the end portions of the two holders inserted through the insertion holes of the top plate.