A chair armrest is revealed. The chair armrest includes an armrest support, an armrest pad body, a connection body, and a connecting member. The armrest pad body has a mounting slot with an opening facing downward while the mounting slot has a depth and a shape. The connection body is provided with a thickness and a shape which are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. The armrest support and the connection body of are connected by the connecting member. During assembly of the chair armrest, the armrest support is connected to the connection body by the connecting member while the armrest pad body is affixed with the armrest support into one part by the connecting member. Thereby production cost is reduced.

A chair armrest is revealed. The chair armrest includes an armrest support, an armrest pad body, a connection body, and a connecting member. The armrest pad body has a mounting slot with an opening facing downward while the mounting slot has a depth and a shape. The connection body is provided with a thickness and a shape which are corresponding to the depth and the shape of the mounting slot. Thus the connection body can be mounted and positioned in the mounting slot. The armrest support and the connection body of are connected by the connecting member. During assembly of the chair armrest, the armrest support is connected to the connection body by the connecting member while the armrest pad body is affixed with the armrest support into one part by the connecting member. Thereby production cost is reduced.

A connecting structure and a seat. The connection structure comprises a mounting hole structure and a mounting structure correspondingly disposed on two main members to be connected; a step structure extends downwards and inwards on one side of the mounting hole structure, and two sides of the step structure are provided with limiting clamping points protruding in a direction parallel to an extending direction of the step structure; the mounting structure is configured to be a column structure, a bottom end of the column structure is provided with a shovel-shaped structure extending in one side of the column structure, and two sides of the shovel-shaped structure are provided with everted protrusions.

A chair includes a base structure, a seat support structure, a back frame comprising a front surface, a rear surface and a forwardly extending bottom portion pivotably connected to the base, a biasing member biasing the back frame from a reclined position toward an upright position, wherein the biasing member is located entirely forward a rearward most edge of the seat support structure, and a back shell comprising a forwardly extending bottom portion connected to the seat support structure, a front surface, a rear surface positioned in front of the front surface of the back frame, a pair of laterally spaced side portions defining an opening therebetween, and a top portion extending laterally between and connected to the side portions, wherein each of the side portions are exclusively connected to the back frame at a first location.

A chair includes a base structure, a seat support structure, a back frame comprising a front surface, a rear surface and a forwardly extending bottom portion pivotably connected to the base, a biasing member biasing the back frame from a reclined position toward an upright position, wherein the biasing member is located entirely forward a rearward most edge of the seat support structure, and a back shell comprising a forwardly extending bottom portion connected to the seat support structure, a front surface, a rear surface positioned in front of the front surface of the back frame, a pair of laterally spaced side portions defining an opening therebetween, and a top portion extending laterally between and connected to the side portions, wherein each of the side portions are exclusively connected to the back frame at a first location.

An object of the present invention is to provide an armrest for a chair capable of receiving writing instruments as well as supporting the arm. To this end, the armrest for the chair of the present invention is an armrest for a chair provided on a seat part through a supporter and supporting a user's arm, which includes a receiving case for supporting the arm which is provided on the upper end of the supporter and elongated in a front-rear direction with respect to the seat part, and has an upper opening part; and an arm rest cover opening and closing the upper opening part and supporting the user's arm.

An object of the present invention is to provide an armrest for a chair capable of receiving writing instruments as well as supporting the arm. To this end, the armrest for the chair of the present invention is an armrest for a chair provided on a seat part through a supporter and supporting a user's arm, which includes a receiving case for supporting the arm which is provided on the upper end of the supporter and elongated in a front-rear direction with respect to the seat part, and has an upper opening part; and an arm rest cover opening and closing the upper opening part and supporting the user's arm.

An apparatus/method for assembling a modular ergonomic chair without using fasteners including a seat support structure that includes a plurality of recesses, wherein each recess includes a releasable latch mechanism (RLM); a vertical seat shaft; a pedestal; a first and second arm rest each of which include an arm rest connecting member, wherein the arm rest connecting member has a cavity to receive a RLM latch member of the seat support structure; and a back support, which includes a connecting member, wherein the connecting member also has a cavity to receive the latch member of another RLM of the seat support structure. The back support, first arm rest, and second arm rest are removably coupled to the seat support structure to permit easy assembly and interchanging of seat components. A reclining back support embodiment is also provided using a RLM latch spring with a corresponding connecting member in the seat support structure.

A rotating work surface system for a chair including a seat base having a top engaging surface, a seat support having top side and a bottom side and a rotating surface positioned in between the seat base and the seat support. The rotating surface includes a top side and a bottom side wherein the rotating surface is adapted to pivotally engage about an axis and a fixed position of the seat base and the seat support.

In an aspect, provided is an adjustable telescoping assembly. The adjustable telescoping assembly comprises a first support member and a second support member that is slidable upon the first support member and which defines an interior volume. At least one damping element is provided that extends from outside the second support member, through a corresponding damping element aperture on the second support member into the interior volume and engages the first support member.