Abstract: 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.

Abstract: A height adjustment assembly for use in furniture such as a chair armrest is revealed. The height adjustment assembly includes a fixing base, an outer sleeve, and a rod. A snap block is released from one of one of the slots of the fixing base to be in a released state when a drive portion of the rid is driven for synchronously driving the snap block of the rod to move for adjustment. Now the fixing base remains still and the outer sleeve can be moved and adjusted vertically relative to the fixing base. The vertical movement of the outer sleeve includes a highest point and a lowest point. The fixing base or a fixed position of the fixing base is located between the highest point and the lowest point. Thereby the fixing base is covered with the outer sleeve to improve beauty and quality of the furniture.

Abstract: A chair armrest which includes an armrest body, a first component, a second component, and a mounting seat is revealed. The armrest body consists of an armrest cover, an armrest base and a rectangular space formed therein. The first component is mounted in the rectangular space of the armrest body and arranged at a first sliding slot of the armrest base while the second component is mounted in the rectangular space of the armrest body and disposed on the first component. The mounting seat is for loading the armrest body. The armrest body can be moved relative to the first component, the second component, the mounting seat and the protruding axis in the lengthwise direction by the first sliding slot for position adjustment. Thereby the chair armrest can be rotated or moved in the lengthwise/widthwise direction for adjustment under the condition that the overall thickness thereof is effectively reduced.

Abstract: An easily assembled chair armrest composed an armrest support, a connecting portion, and an armrest revealed. The connecting portion with a lock head is selectively disposed on the armrest or the armrest support while a locking hole is arranged at the armrest or the armrest support without the connecting portion. A locking slot communicates with the inner side of the locking hole. The armrest and the armrest support are in a first assembled state when the lock head is mounted into the locking slot through the lock hole. Then the lock head is horizontally rotated a staggered angle within the locking slot so that a lengthwise central axis of the armrest and a lengthwise central axis of the armrest support are coupled. Now the armrest and the armrest support are fastened into one part to be in a second assembled state. Thereby both structural strength and tightness are improved.

Abstract: A tablet including a plate member, a support rod and a positioning member is revealed. The plate member has a top cover, a bottom cover, and a first slide member. By the movable engagement of a rack with a damper, the top and the bottom covers slide relative to the first slide member. The support rod includes an upper end for supporting the plate member and a lower end assembled on a chair, a bed, a sofa, a table, a tray with wheels or a multi-seater chair. The upper end forms a rotary shaft which is inserted through an insertion hole of the bottom cover to be fixed on the first slide member. The positioning member includes a movable locking pin member. The angle of the plate member can be adjusted by the locking pin member being released from or locked into a positioning hole on the rotary shaft.

Abstract: A displacement auxiliary device for an accessory of a chair is revealed. The auxiliary device is disposed on the chair and used in combination with the accessory of the chair such as an armrest, a lumbar support, a headrest, etc. The auxiliary device includes a displacement member, a fixing plate and a loading plate. The displacement member further includes two rotating members that are rotated a large angle around two rotary shafts respectively and symmetrically to be moved inward to a first position or extended outward to a second position. The accessory of the chair stays still without displacement when the two rotating members are moved inward to the first position. The accessory of the chair moves synchronously while the two rotating members are extended outward to the second position. Thereby the accessory of the chair can be adjusted to have larger displacement.

Abstract: An armrest adjuster is revealed. The armrest adjuster includes an armrest disposed on a top surface of an armrest support. The armrest consists of an armrest pad, an armrest base connected to an armrest cover of the armrest pad to form an armrest body, a first component, a second component fixed between the armrest base and the top surface of the armrest support and arranged with a projecting shaft thereof in the fore-and-aft direction, a first shaft cover, a second shaft cover, and at least one damper. The armrest can not only be changed between a button-free mode and a button mode easily, but also can be installed optionally for adjustment in fore-and-aft direction or lateral direction, or rotation from side to side, with/or without damping action. Thereby the armrest is easy to be installed and the side-view height of the armrest can be reduced.

Abstract: A headrest lifting mechanism is revealed. The headrest lifting mechanism is disposed on a seat back and including a lifting base, a bottom-side vertical support and an elastic positioning rod. A headrest is connected to an upper end of the bottom-side vertical support. A positioning end of the elastic positioning rod fixed on the bottom-side vertical support is moved downward into one of the slots of the lifting base owing to material elasticity when the bottom-side vertical support is assembled with the lifting base. Thus the bottom-side vertical support and the positioning end are slid and positioned together in the slots of the lifting base. The number of the parts is reduced and the assembly is simplified. This enables cost reduction and mass production.

Abstract: An adjustment device for vertically adjusting a chair headrest is revealed and is installed on a seat back frame while in use. The adjustment device includes a sliding member, a fixing member and a button set. A vertical toothed part of the button set is moved and separated from a first rack of the sliding member when the button set is pressed. Then the sliding member is moved vertically relative to the fixing member for synchronous adjustment of vertical position of the headrest. After the button set being released, the vertical toothed part of the button set is turned back and engaged with the first rack of the sliding member. Thus the sliding member and the headrest are positioned at a new position after the adjustment.

Abstract: An armrest adjuster includes a slider, a fixing member moveably mounted into a concave space of the slider, and a button is revealed. Two pins set on a bottom surface of the fixing member are moveably mounted in two long grooves on a bottom surface of the slider respectively. Each pin is set with a through hole for being fastened on a top of a vertical support of an armrest. The button exposed is clipped between the slider and the fixing member. The button is disposed with a rack while another rack corresponding to the rack of the button is arranged at the fixing member. The rack of the button is separated from the rack of the fixing member when the button is pressed. Thus the slider is moved horizontally relative to the fixing member. The design is beneficial to the assembly process, modularization and mass production.

Abstract: A quickly released and fastened adjustment mechanism including a gasket, a first ratchet, a second ratchet, a T-shaped sleeve and a fastener is installed between a sliding member and a fixing member. The first and second ratchets are arranged with annular teeth respectively while the two annular teeth are engaged. The T-shaped sleeve is mounted in the first and second ratchets and against the gasket. The fastener is passed through the T-shaped sleeve, the gasket and the sliding member to be secured on the fixing member. Thus the two corresponding annular teeth are engaged firmly. The height difference between low-level and high-level engagement of the two annular teeth is Hf. The sleeved height of the T-shaped sleeve is D1. The total height of the first and second ratchets in the low-level engagement is D2. D1>D2. D1?D2=G>0 and Hf>G>0.

Abstract: A chair headrest including a headrest, a pivot member and a fastener assembly is revealed. The headrest is disposed with a damper and a guide and stop member for improving vertical movement stability and safety during adjustment. The pivot member having pivotally connected first and second portions is arranged between the headrest and a seat back. The first portion includes a pivot part with two separate ends while the second portion has a mounting part with two apart ends. The pivot part fitted to the mounting part can be rotated around an actuation axis. The fastener assembly is set between two ends of the second portion and having a connection portion for connecting the two ends of the pivot part and the two ends of the mounting part and an actuator assembly for making the two ends of the mounting part apart to be in a pressed state.

Abstract: A height adjustment mechanism for armrests is revealed. The height adjustment mechanism includes a tubular base disposed with positioning holes, an outer sleeve disposed around the tubular base and having an opening arranged at a top end thereof, a strip rack mounted in the outer sleeve and disposed with an insertion slot on a lower part thereof, a pull handle mounted in the strip rack, a positioning member arranged at a lower end of the pull handle and inserted through the insertion slot of the strip rack to be locked in the positioning hole of the tubular base, a press member passed through the opening of the outer sleeve to be connected to a top end of the pull handle, and an alignment member disposed on corresponding surfaces of the strip rack and the pull handle for limiting vertical displacement of the pull handle and the strip rack.

Abstract: A height adjustment mechanism for armrests is revealed. The height adjustment mechanism includes a tubular base disposed with positioning holes, an outer sleeve disposed around the tubular base and having an opening arranged at a top end thereof, a strip rack mounted in the outer sleeve and disposed with an insertion slot on a lower part thereof, a pull handle mounted in the strip rack, a positioning member arranged at a lower end of the pull handle and inserted through the insertion slot of the strip rack to be locked in the positioning hole of the tubular base, a press member passed through the opening of the outer sleeve to be connected to a top end of the pull handle, and an alignment member disposed on corresponding surfaces of the strip rack and the pull handle for limiting vertical displacement of the pull handle and the strip rack.

Abstract: An armrest adjustment device includes an armrest arranged at a top surface of an armrest support. The lower part of the armrest support is connected to a chair seat. The armrest can be adjusted to move forward and backward in relation to the chair seat. A first component is mounted in the armrest. The first component is assembled with and fixed on the armrest support so that the armrest can be moved forward and backward in relation to the first component. Moreover, a second component is arranged between the armrest and the armrest support. Instead of the first component, the second component is assembled with and fixed on the armrest support. Thus the armrest is moved in the left/right direction in relation to the second component.