Abstract: Disclosed is a waist support structure of a seat back. The seat back includes a first frame, a second frame coupled to the first frame, and a net member mounted between the first and second frames. The second frame includes a mounting brace mounted thereto and the mounting brace include a waist support coupling section that is connectable with a waist support. The waist support includes a support portion including a rigid plate and a connection portion. The support portion includes a barrel mounted thereto and extending toward the connection portion. The connection portion includes a projection peg mounted thereto and extending toward the support portion to correspond to the barrel. An elastic element has an end fit to the projection peg of the connection portion and an opposite end fit in the barrel of the support portion so as to interface between the connection portion and the support portion.

Abstract: A structure for chair backrest is disclosed. The chair includes a first support frame, a second support frame coupled to the first support frame, a seat section arranged between the first support frame and the second support frame. The first support frame includes a backrest mounted thereon. The first support frame includes a lower frame section and an upper frame section. The lower frame section and the upper frame section include, mounted therebetween, a supine inclination assembly that upon receiving a force acting thereon takes a movement for achieving an predetermined angle of supine inclination. In this way, easy adjustment of the angular position of the backrest may be achieved for comfortableness of the user, and excessive inclination that causes potential risk can be avoided so as to improve the utilization of the backrest of the chair.

Abstract: A net chair-back includes a first frame member, a second frame member corresponding to the first frame member and combined with the first frame member, and a net member arranged between the first frame member and the second frame member. The first frame member includes a recessed groove formed therein and arranged in a circumferentially surrounding form. The recessed groove includes a plurality of fixation posts mounted therein. The second frame member includes an insertion groove formed therein and arranged in a circumferentially surrounding form. The insertion groove includes a plurality of locking pillars formed therein. The locking pillars each include a retention member mounted thereto. The retention member is tightly engageable with an inside surface of the fixation post. In this way, exposing locking holes or threaded fasteners outside the net chair-back can be prevented to thereby improve the outside appearance of the net chair-back.

Abstract: Disclosed is a platform on desktop with elevation function, including a primary desktop, a primary desktop, an elevation assembly securely mounted to the primary desktop, and a secondary desktop securely mounted to the elevation assembly. The elevation assembly includes opposite arranged first and elevation frames. A positioning assembly includes a positioning member having spaced positioning holes to selectively receive an end of an upper guide pin mounted to a bar of the elevation assembly. A pull handle assembly is rotatably coupled to the positioning member for selectively disengaging the upper guide pin from the positioning member so as to allow the elevation frame to raise or lower down.

Abstract: An elevation table includes a tabletop and a table leg frame mounted to the tabletop. The table leg frame includes a fixed leg, a movable leg insertable into the fixed leg, and an extendible/retractable bar arranged inside the fixed leg and the movable leg. The movable leg has an end connected to the tabletop and an opposite end receiving a first positioning sleeve to fit thereto and insertable into the fixed leg. The fixed leg has an end into which the movable leg is insertable and receives a second positioning sleeve to fit thereto. The first and second positioning sleeves each include embedding holes formed in at least two sidewalls thereof and the embedding holes receive embedded pieces to be fit therein. The first and second positioning sleeves are in point contact with surfaces of the movable leg and the fixed leg by means of the embedded pieces.

Abstract: The assembly contains a base and a tilt adjustment member. The base has a frame with a seat attachment piece for attaching the frame to a seat cushion of a seat. A locking element is configured in the frame and has a number of notches. In front of the locking element, the frame has a fastening section so that the tilt adjustment member can be accommodated. Each of the lateral sides of the frame has a through hole for a control rod to thread through. The tilt adjustment member contains a swing block, a seat, a locking piece, and a twisting element. By configuring the locking element and the tilt adjustment member on the base, and by using the control rod to engage the locking piece of the tilt adjustment member to interact the notches of the locking element, the seat can be tilted with simple operation and limited effort.

Abstract: The assembly contains a base and a tilt adjustment member. The base has a frame with a seat attachment piece for attaching the frame to a seat cushion of a seat. A locking element is configured in the frame and has a number of notches. In front of the locking element, the frame has a fastening section so that the tilt adjustment member can be accommodated. Each of the lateral sides of the frame has a through hole for a control rod to thread through. The tilt adjustment member contains a swing block, a seat, a locking piece, and a twisting element. By configuring the locking element and the tilt adjustment member on the base, and by using the control rod to engage the locking piece of the tilt adjustment member to interact the notches of the locking element, the seat can be tilted with simple operation and limited effort.

Abstract: A novel meshed seat cushion is provided herein which contains at least a bottom member, a meshed member, a rim member, and a number of elastic members. The bottom member has a basin shape with a number of supporting elements along two opposing sides of the bottom member so as to suspend the elastic members across the top of the bottom member and beneath the meshed member. Each of the elastic members has at least an elongated flexible element with locking elements at its two ends. The meshed member covers the top and the top rim of the bottom member and is framed and fixed to the bottom member by the rim member and the application of a number of bolts. The elastic members not only improve the comfort of the user, but also provide support to the meshed member 4 so that it wouldn't deform after a long period of usage and the operational life of the meshed seat cushion is therefore extended significantly.

Abstract: An arm resting device contains a resting element, an adjustment element, a track element, and a connection element. The adjustment element contains a first piece and a second piece. The track element has an elongated through slot and the connection element has a trough with two sectorial portions. The track element is fixedly attached to the resting element while the adjustment element is fixedly attached to the connection element. The advancement of the arm resting device is achieved by the relative sliding movement between the first piece of the adjustment element and the track element. The orientation of the arm resting device is adjusted by turning the second piece of the adjustment element within the confinement of the trough of the connection element.

Abstract: A chair includes an upper frame disposed above and pivoted to a lower frame. An inclination adjusting device includes a latch mounted slidably on the upper frame and movable between a first position, in which the latch extends into and engages a selected one of engaging grooves in a latch engaging member that is formed on the lower frame, and a second position, in which the latch disengages the selected engaging groove.

Abstract: A chair includes an upper frame disposed above and pivoted to a lower frame. A stopping device includes a slide mounted slidably on the upper frame, and a stopping member. The slide is slidable between a first position, where the stopping member is offset from a rear plate of the lower frame in a longitudinal direction, and a second position, where the stopping member is aligned with the rear plate in a vertical direction. A cam mechanism includes a cam connected movably to side plates of the lower frame and a cam follower formed on the slide and engaging the cam in such a manner that movement of the cam from a releasing position to a restricting position results in movement of the slide from the first position to the second position.