A bench type seat frame for use in vehicles, such as busses and/or other passenger vehicles has been developed. In one example, the seat frame includes a reinforced pedestal mount. For example, the pedestal includes one or more self-reinforced feet mounted to a floor of the vehicle. In another example, the self-reinforced feet are made from folded steel in a double thickness configuration. The pedestal further includes one or more crumple zones configured to dissipate energy during a collision. In another example, the seat frame includes a cross member extending between the pedestal and a wall mount. In one example, the cross member is able to support both belted and unbelted seat configurations. For example, the cross member includes one or more belt anchors configured to receive and secure one or more seat belts.

A columnar body including: plural elongated plate shaped panel members extending in one direction; and plural weld portions where two width direction end portions of respective panel members out of the plural panel members are welded together to configure a closed cross-section.

A vehicle seat capable of exhibiting both performances of regulating an input of a load and reducing vibration is provided. One aspect of the present disclosure is a vehicle seat including a coupling structure coupling a first member and a second member. The coupling structure includes a bolt inserted through the first member and the second member, an auxiliary member arranged so as to hold the first member between the auxiliary member and the second member in an axial direction of the bolt, a first elastic element arranged between the first member and the second member in the axial direction, the first elastic element being in contact with the first member and the second member, and a second elastic element arranged between the first member and the auxiliary member in the axial direction, the second elastic element being in contact with the first member and the auxiliary member.

A recliner mechanism includes a housing plate and a recliner heart. The housing plate includes a plate body. The recliner heart is mounted to the housing plate and operable in an unlocked state permitting relative rotation between a seat back and a seat bottom, and a locked state preventing relative rotation between the seatback and the seat bottom. The housing plate includes a fore end proximate a front of the seat bottom and an aft end opposing the fore end and proximate a rear end of the seat bottom. The plate body includes a protrusion extending outwardly therefrom at or near the aft end.

A connection bar mounting structure includes: link members, each including a first hole part in a middle part; vehicle members, each configured to rotatably support each link member at a first fixation part of each link member; side frames, each configured to rotatably support each link member at a second fixation part of each link member opposite to the first fixation part across the first hole part; and a connection bar, each end thereof fixed to the first hole part of each link member. Each link member has a first bending rigidity reduced section between the middle part and the first fixation part and a second bending rigidity reduced section between the middle part and the second fixation part, the first and second bending rigidity reduced sections having bending rigidity smaller than those of the middle part, the first fixation part, and the second fixation part.

Disclosed are a seat frame assembly and a method of manufacturing the same whereby adhesion of a reinforcing material attached to a seat frame is improved to secure rigidity of the seat frame and process speed is improved. According to one embodiment disclosed herein, seat frame assembly includes: a frame configured such that a portion of each of opposite sides is bent forward, and supporting an upper body of an occupant; and side members joined to the opposite sides of the frame, respectively, each of the side members including a groove formed in a surface being in close contact with the frame, wherein a portion of the frame that is surface-joined to each of the side members is provided with a protrusion inserted into the groove.

Described are modular leg assemblies for passenger seats. The modular leg assemblies can include a universal first leg member, a universal second leg member, a size specific member, and a universal seat frame tube receptor. The universal first leg member may be coupled to a first seat track fitting. The universal second leg member may be coupled to a second seat track fitting. The size specific member may be coupled to the universal first leg member and to the universal second leg member. At least one of the universal second leg member or the universal seat frame tube receptor can include a set of attachment points for coupling the universal seat frame tube receptor to the universal second leg member.

A frame structure (5) for a vehicle seat backrest (3), said frame structure (5) comprising a centre frame (18) and a side frame (14), said centre frame (18) and said side frame (14) extending in a longitudinal (x), transversal (y) and vertical (z) direction, respectively, said longitudinal (x), transversal (y) and vertical (z) directions being perpendicular to each other and corresponding to a longitudinal, transversal and vertical direction, respectively, of a vehicle. Said frame structure (5) further comprises a lower connection (7) which is adapted to interconnect said centre frame (18) and said side frame (14) and which is located at or adjacent to a lower end of said frame structure (5) in said vertical direction (z).

An adjustment assembly for a motor vehicle seat, comprising an adjustment mechanism and a flange that is part of a seat frame, the adjustment mechanism comprising: a housing, itself comprising a bottom and a cover, an output member having a base, an end opposite the base, and a pinion between the base and the end, the pinion being mounted to pivot about an axis of rotation, a backplate, comprising a base plate fixed to the flange and an upper part intended to partially receive the output member, a pumping mechanism housed in the housing and configured to drive the pinion in rotation, the output member being in contact in the flange and in the upper part, the flange and the upper part allowing rotation of the output member about the axis of rotation.

A method of welding a support on a slide profile, which comprises: a) providing a support having a wall with an inner face, and providing a profile having a wall with an outer face, b) positioning the interface support with the inner face of its wall against the outer face of the wall of the profile, c) creating a welding joint between the wall of the support and the wall of the profile by moving a laser beam relative to the wall of the profile, while keeping the laser beam in a position such that it successively passes through, from an emitting source: the wall of the profile, then the wall of the support, while remaining within the material of the wall of the support.