Adjustment mechanism for armrest

Abstract

An armrest a rope control mechanism is disclosed. The rope mechanism consists of a rope with certain length and a soft tube covering the rope with about same length. The top end of the rope connects to a control button while the lower end of the rope extends downwards and connects with a control member of a seat adjustment mechanism or a seat back adjustment mechanism inside a bottom plate. When the user operates the control button to pull the rope moving up, the rope synchronously pulls the control member of the seat adjustment mechanism or the seat back adjustment mechanism so as to make the seat adjustment mechanism or the seat back adjustment mechanism work. Thus the convenience of operation and adjustment are improved.

1 . An armrest with a rope control mechanism arranged on right and left sides of a seat of a chair comprising: at least an armrest member, an outer sleeve; a bottom plate arranged on bottom of the seat, at least one control member, a seat/seat back adjustment mechanism disposed inside the bottom plate while the control member is pulled so as to adjust height or inclining angle of the seat or a seat back; the armrest with a rope control mechanism features on that: a control bottom for adjusting the seat/seat back is disposed on one side of the outer sleeve under the armrest member, and a rope mechanism having a rope and a soft tube covering the rope is arranged inside the outer sleeve while a top end of the rope connects to the control button so that the rope can be moved up by operating the control button; a lower end of the rope and the soft tube connects to the control member of the seat/seat back adjustment mechanism inside the bottom plate; wherein while operating the control button to pull up the top end of the rope, the lower end of the rope synchronously pulls the control member inside the bottom plate to move for making the seat/seat back adjustment mechanism work so as to adjust the seat or the seat back. 
   
   
       2 . The device as claimed in  claim 1 , wherein the armrest is further disposed with a height adjustment mechanism for an armrest so as to adjust height of and locate the armrest member. 
   
   
       3 . The device as claimed in  claim 1 , wherein a height control button for armrest and a height adjustment mechanism for an armrest are disposed on an outer side and an inner side of the outer sleeve under the armrest member while a rope control mechanism having a rope and a soft tube is arranged inside the outer sleeve; the top end of the rope connects to the control button so that the rope is pulled up by operation of the control button while the rope and the soft tube extend inside the outer sleeve downwards to form a ring and the lower end of the rope connects with a control member of a seat/seat back adjustment mechanism; wherein once height of the armrest member of the armrest is adjusted, the ring formed by the rope and the soft tube opens by adjusting the armrest member moving downwards or closes by adjusting the armrest member moving upwards while the control member is not moved by the rope; while operating the control button to pull up the top end of the rope, the lower end of the rope synchronously pulls the control member of the seat/seat back adjustment mechanism inside the bottom plate to move for making the seat/seat back adjustment mechanism work so as to adjust the seat or the seat back. 
   
   
       4 . The device as claimed in  claim 3 , wherein the armrest comprising: an armrest member, an outer sleeve, an inner sleeve, a long plate, a height adjustment mechanism for an armrest, and a rope control mechanism and a base; wherein the armrest member is for a user to leaning against;
 the outer sleeve whose top surface is fastened on the bottom of the armrest member and a height control button for armrest and a control button for chair seat/seat back are disposed on an inner side and an outer side of the top end of the outer sleeve respectively;   the inner sleeve is disposed inside the outer sleeve and a bottom of the inner sleeve is fastened on the base while a locating toothed slot having a plurality of horizontal slots is arranged vertically is disposed on the outside wall of the inner sleeve and a vertical guiding slot is disposed inside the inner sleeve;   the long plate is sleeved in the guiding slot of the inner sleeve while a top end thereof is fastened on the rear end of the armrest member so that the armrest member, the outer sleeve and the long plate form a body that moves jointly; a vertical slot is disposed on the long plate for accommodating the height adjustment mechanism for an armrest and a horizontal insertion slot facing the toothed slot of the inner sleeve is arranged on the bottom of the long plate while another horizontal insertion slot facing the height control button for armrest of the outer sleeve is disposed on the top of the long plate; a projecting axis corresponding to a seat/seat back control button, working as rotating axis of the seat/seat back control button, is disposed on inner surface of the top of the long plate;   he height adjustment mechanism for an armrest is mounted in the vertical slot of the long plate and comprising a projecting axis, a locating retaining block, an elastic piece, a tilt piece and a recovery spring; the projecting axis is on an outer side of a top side thereof and is inserting through the horizontal insertion slot for being assembled with the height control button; the locating retaining block inserts through the horizontal insertion slot under the vertical slot of the long plate; a rear end of the elastic piece connects to the locating retaining block; the tilt piece slides up/down by operation of the height control button so as to drive the rear end of the elastic piece moving horizontally so that the locating retaining block moves in the horizontal slot and locks into the slot of the locating toothed slot or releases from the slot thereof; the recovery spring makes the silt piece turn back; wherein when the height control button is pulled up and the tilt piece synchronously moving upwards, the locating retaining block retracts from the horizontal insertion slot and is released from the slot of the locating toothed slot so that the armrest member is moved up/down to adjust the height thereof; when the control button is released and the tilt piece turns back, the retaining block moves horizontally inside the horizontal insertion slot so as to project outside the horizontal insertion slot and lock into one slot of the locating toothed slot; thereby, the height adjustment mechanism for an armrest is operated by the height control button to adjust height of the armrest;   the rope control mechanism having a rope with certain length and an enclosing soft tube with about the same length is disposed between the seat/seat back control button and the seat/seat back adjustment mechanism inside the bottom plate; an top end of the rope is connected to the seat/seat back control button; when the seat/seat back control button is not pushed, the top end of the rope stops at a first position; the rope and the soft tube extend downwards, through the inner side of the long plate and the inner wall of the inner sleeve, moving around the height adjustment mechanism for an armrest to form a ring, then go inserting through the bottom of the inner sleeve, along the base, and finally being fastened on the bottom plate; the lower end of the rope connects the control members of the seat/seat back adjustment mechanisms inside then bottom plate while when the rope is pulled up by the seat/seat back control button, the lower end of the rope is synchronously pulled outwards and the control members is driven to move;   the base is fastened on the bottom of the inner sleeve and extending to the inner side for being further fastened on the bottom of the seat;   wherein when the height of the armrest member is adjusted by operating the height control button, the top end of the rope synchronously moves up or down to adjust the height and relatively the ring opens or closes; when the armrest member is adjusted to a certain height, the seat/seat back control button is operated to make the seat/seat back adjustment mechanism work.   
   
   
       5 . The device as claimed in  claim 4 , wherein the seat/seat back control button comprising an outer cantilever and an inner cantilever; the inner cantilever having a rotating end and a suspending end is inside the outer sleeve while the rotating end is pivoted on the projecting axis of the long plate so that the suspending end pivots freely; the outer cantilever is outside the outer sleeve and a rotating end of the outer cantilever is fixed on the rotating end of the inner cantilever so that a suspending end of the outer cantilever is able to be pulled and pivoted; wherein when the outer cantilever is pulled and the suspending end of the outer cantilever is moved and pivoted at a certain angle, from a first position to a second position, the suspending end of the inner cantilever is synchronously driven to move from a first position to a second position, pivoting an angle, for pulling the rope. 
   
   
       6 . The device as claimed in  claim 2 , wherein a height control button for armrest and a height adjustment mechanism for an armrest are disposed on an outer side and an inner side of the outer sleeve under the armrest member while a rope control mechanism having a rope and a soft tube is arranged inside the outer sleeve; the top end of the rope connects to the control button so that the rope is pulled up by operation of the control button while the rope and the soft tube extend inside the outer sleeve downwards to form a ring and the lower end of the rope connects with a control member of a seat/seat back adjustment mechanism; wherein once height of the armrest member of the armrest is adjusted, the ring formed by the rope and the soft tube opens by adjusting the armrest member moving downwards or closes by adjusting the armrest member moving upwards while the control member is not moved by the rope; while operating the control button to pull up the top end of the rope, the lower end of the rope synchronously pulls the control member of the seat/seat back adjustment mechanism inside the bottom plate to move for making the seat/seat back adjustment mechanism work so as to adjust the seat or the seat back. 
   
   
       7 . The device as claimed in  claim 6 , wherein the armrest comprising: an armrest member, an outer sleeve, an inner sleeve, a long plate, a height adjustment mechanism for an armrest, and a rope control mechanism and a base; wherein the armrest member is for a user to leaning against;
 the outer sleeve whose top surface is fastened on the bottom of the armrest member and a height control button for armrest and a control button for chair seat/seat back are disposed on an inner side and an outer side of the top end of the outer sleeve respectively;   the inner sleeve is disposed inside the outer sleeve and a bottom of the inner sleeve is fastened on the base while a locating toothed slot having a plurality of horizontal slots is arranged vertically is disposed on the outside wall of the inner sleeve and a vertical guiding slot is disposed inside the inner sleeve;   the long plate is sleeved in the guiding slot of the inner sleeve while a top end thereof is fastened on the rear end of the armrest member so that the armrest member, the outer sleeve and the long plate form a body that moves jointly; a vertical slot is disposed on the long plate for accommodating the height adjustment mechanism for an armrest and a horizontal insertion slot facing the toothed slot of the inner sleeve is arranged on the bottom of the long plate while another horizontal insertion slot facing the height control button for armrest of the outer sleeve is disposed on the top of the long plate; a projecting axis corresponding to a seat/seat back control button, working as rotating axis of the seat/seat back control button, is disposed on inner surface of the top of the long plate;   he height adjustment mechanism for an armrest is mounted in the vertical slot of the long plate and comprising a projecting axis, a locating retaining block, an elastic piece, a tilt piece and a recovery spring; the projecting axis is on an outer side of a top side thereof and is inserting through the horizontal insertion slot for being assembled with the height control button; the locating retaining block inserts through the horizontal insertion slot under the vertical slot of the long plate; a rear end of the elastic piece connects to the locating retaining block; the tilt piece slides up/down by operation of the height control button so as to drive the rear end of the elastic piece moving horizontally so that the locating retaining block moves in the horizontal slot and locks into the slot of the locating toothed slot or releases from the slot thereof; the recovery spring makes the silt piece turn back; wherein when the height control button is pulled up and the tilt piece synchronously moving upwards, the locating retaining block retracts from the horizontal insertion slot and is released from the slot of the locating toothed slot so that the armrest member is moved up/down to adjust the height thereof; when the control button is released and the tilt piece turns back, the retaining block moves horizontally inside the horizontal insertion slot so as to project outside the horizontal insertion slot and lock into one slot of the locating toothed slot; thereby, the height adjustment mechanism for an armrest is operated by the height control button to adjust height of the armrest;   the rope control mechanism having a rope with certain length and an enclosing soft tube with about the same length is disposed between the seat/seat back control button and the seat/seat back adjustment mechanism inside the bottom plate; an top end of the rope is connected to the seat/seat back control button; when the seat/seat back control button is not pushed, the top end of the rope stops at a first position; the rope and the soft tube extend downwards, through the inner side of the long plate and the inner wall of the inner sleeve, moving around the height adjustment mechanism for an armrest to form a ring, then go inserting through the bottom of the inner sleeve, along the base, and finally being fastened on the bottom plate; the lower end of the rope connects the control members of the seat/seat back adjustment mechanisms inside then bottom plate while when the rope is pulled up by the seat/seat back control button, the lower end of the rope is synchronously pulled outwards and the control members is driven to move;   the base is fastened on the bottom of the inner sleeve and extending to the inner side for being further fastened on the bottom of the seat;   wherein when the height of the armrest member is adjusted by operating the height control button, the top end of the rope synchronously moves up or down to adjust the height and relatively the ring opens or closes; when the armrest member is adjusted to a certain height, the seat/seat back control button is operated to make the seat/seat back adjustment mechanism work.   
   
   
       8 . The device as claimed in  claim 7 , wherein the seat/seat back control button comprising an outer cantilever and an inner cantilever; the inner cantilever having a rotating end and a suspending end is inside the outer sleeve while the rotating end is pivoted on the projecting axis of the long plate so that the suspending end pivots freely; the outer cantilever is outside the outer sleeve and a rotating end of the outer cantilever is fixed on the rotating end of the inner cantilever so that a suspending end of the outer cantilever is able to be pulled and pivoted; wherein when the outer cantilever is pulled and the suspending end of the outer cantilever is moved and pivoted at a certain angle, from a first position to a second position, the suspending end of the inner cantilever is synchronously driven to move from a first position to a second position, pivoting an angle, for pulling the rope.