A chair can include a chair back, or backrest, that is coupled to a base of a chair above a seat of the chair. A tilt mechanism can attach the backrest to the base. In some embodiments, the tilt mechanism can be configured so that the backrest rotates about multiple pivots as it reclines from an upright position to a reclined position to drive motion of the seat during recline of the backrest.

Chairs, seating systems, chair sub-assemblies and sub-systems, and associated methods of assembly and use. Aspects relate to chairs and methods of assembling chairs including chair controls of a relatively compact and effective design with desirable synchronous raising and tilting motions. Aspects also relate to tilt lock assemblies for achieving secure and effective tilt securement. Additional aspects relate to forward and rearward adjustment, or extension and retraction, of a seating assembly of the chair.

A foldable chair, including a first bracket and a second bracket that are hingedly fixed in an X-shape, and an adjusting mechanism connecting an upper portion of the first bracket and a lower portion of the second bracket. The adjusting mechanism includes a fixing member and a movable member, the fixing member including a slide groove, and the movable member including a limit member movable within the slide groove; the slide groove has a serrated first inner side wall and a smooth second inner side wall, and the limit member is snapable to the first inner side wall.

A chair can include a chair back, or backrest, that is coupled to a base of a chair above a seat of the chair. A tilt mechanism can attach the backrest to the base. In some embodiments, the tilt mechanism can be configured so that the backrest rotates about multiple pivots as it reclines from an upright position to a reclined position to drive motion of the seat during recline of the backrest.

Chairs, seating systems, chair sub-assemblies and sub-systems, and associated methods of assembly and use. Aspects relate to chairs and methods of assembling chairs including chair controls of a relatively compact and effective design with desirable synchronous raising and tilting motions. Aspects also relate to tilt lock assemblies for achieving secure and effective tilt securement. Additional aspects relate to forward and rearward adjustment, or extension and retraction, of a seating assembly of the chair.

The disclosed technology relates to a lounger that enables a seat portion and a backrest portion to translate independently of leg frames. The lounger described therefore provides a gliding function. The gliding lounger includes a first base leg frame and a second base leg frame. The gliding lounger includes a first armrest frame movable along a longitudinal axis of the gliding lounger independently of the first base leg frame and the second leg base frame. The gliding lounger includes a second armrest frame movable along the longitudinal axis of the gliding lounger independently of the first base leg frame and the second leg base frame.

The chair is of the type with mutually synchronous adjustment between back inclination and seat inclination, namely via a region between a respective zero position of back inclination (R.sub.0) and seat inclination (S.sub.0) and a respective maximum back inclination and seat inclination. The chair has a substructure (1) which is intended for placing on the floor and on which a base (2) is fastened rigidly. A seat support (6) which has a seat region and a back region is connected to the base (2). Furthermore, the chair includes two backrest bows (3) which are deflectable differently with respect to each other and are fastened on one side to the base (2) and on the other side to the back region of the seat support (6). The two backrest bows (3) are coupled independently of each other to the base (2) on a stationary first axis of rotation (D1). The seat region of the seat support (6) is coupled to the base (2) on a stationary second axis of rotation (D2). The two backrest bows (3) are coupled independently of each other to the back region of the seat support (6) on an elastically deformable third axis of rotation (D3). The back region of the seat support (6) is twistable elastically. The seat support is covered with a cover. In the configuration as an office swivel chair, a height-adjustable pneumatic spring (12) on which the base (2) rests in order to adjust the seat support (6) to a height corresponding to a user's needs and in order to configure said seat support (6) to be rotatable about a vertical axis (V) is arranged in the substructure (1).

Chairs, seating systems, chair sub-assemblies and sub-systems, and associated methods of assembly and use. Aspects relate to chairs and methods of assembling chairs including chair controls of a relatively compact and effective design with desirable synchronous raising and tilting motions. Aspects also relate to tilt lock assemblies for achieving secure and effective tilt securement. Additional aspects relate to forward and rearward adjustment, or extension and retraction, of a seating assembly of the chair.

An interlocking mechanism for a seat and a back of a chair is provided. A seat body and a chair chassis are pivotally connected, and a pad plate is pivotally connected with the seat body. Thereby the pad plate is moved around a pivotal connection between itself and the seat body when users sit on the pad plate. While a front side of the pad plate is moved downward, it is inclined to an angle slowly by a pad spring connected with the pad plate. When the use is leaning on the chair back connected with the seat body, the seat body is moved backward with a pivotal connection between itself and the chair chassis. The pivotal connection between the seat body and the pad plate can push the pad plate upward so that the seat body is inclined with the chair back and the user sits more comfortably.

Chairs, seating systems, chair sub-assemblies and sub-systems, and associated methods of assembly and use. Aspects relate to chairs and methods of assembling chairs including chair controls of a relatively compact and effective design with desirable synchronous raising and tilting motions. Aspects also relate to tilt lock assemblies for achieving secure and effective tilt securement. Additional aspects relate to forward and rearward adjustment, or extension and retraction, of a seating assembly of the chair.