Chair, especially a reclining chair
First Claim
1. A reclining chair comprising:
- a seat having a rear edge;
a backrest cooperating with the rear edge of the seat;
rigid seat support means including means defining a stationary pivot axis about which the seat can be pivoted rearwardly into a reclining position;
said backrest moving downwardly along with the rear edge of the seat during the reclining of said seat;
means defining a movable pivot axis for the backrest and which movable pivot axis is mounted at the seat;
said backrest being simultaneously pivotable about the movable pivot axis mounted at the seat;
a reclining mechanism provided for said backrest and inclining a guide element and a spring arrangement, with said guide element cooperating with said spring arrangement and with said means defining said movable pivot axis;
said reclining mechanism ensuring that the backrest moves through a larger pivot angle than the pivot angle of the seat during pivoting of the backrest;
said backrest containing a backrest plate member capable of pivotal motion;
a guide arrangement provided for said backrest plate member;
an adjustment mechanism actuatable during the pivotal motion of the backrest plate member for drawing the backrest plate member along said guide arrangement downardly towards the seat;
means defining a common pivot axis for said adjustment mechanism of the backrest plate member and the reclining mechanism of the backrest;
said rigid seat support means further including means defining a fixed pivot axis situated in fixed spaced relationship to said stationary pivot axis and about which there is pivotable said common pivot axis;
said adjustmet mechanism comprising a transmission lever pair;
said transmission lever pair interconnecting said common pivot axis and said fixed pivot axis and being rotatable about said fixed pivot axis;
said transmission lever pair extending past said fixed pivot axis; and
said transmission lever pair during the movement of the common pivot axis initiating a movement of the backrest plate member which is greater in comparison thereto. PG,22
1 Assignment
0 Petitions
Accused Products
Abstract
A reclining chair is disclosed containing a conventional seat portion pivotable about a fixed pivot shaft or axle and a backrest containing a backrest plate displaceable upon guide rails. These guide rails are pivoted to a greater extent than the seat during the rearward reclining of the seat, due to the action of a guide element connected with a piston rod of a pneumatic spring arrangement. Due to the movement of the guide element there is rotated a transmission lever pair about a stationary pivot shaft, the transmission lever pair being connected with the guide element. A curved entrainment member, hingedly connected with this transmission lever pair, is connected with the backrest plate. Since a pivot shaft between the transmission lever pair and the curved entrainment member moves through an appreciably larger distance than the connection location between the seat and the guide element or the guide rails, the backrest plate is downwardly drawn along the guide rails. By virtue of this adjustment mechanism there is ensured that the backrest plate follows that course of movement which is performed by the back of the user during reclining of the chair.
124 Citations
8 Claims
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1. A reclining chair comprising:
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a seat having a rear edge; a backrest cooperating with the rear edge of the seat; rigid seat support means including means defining a stationary pivot axis about which the seat can be pivoted rearwardly into a reclining position; said backrest moving downwardly along with the rear edge of the seat during the reclining of said seat; means defining a movable pivot axis for the backrest and which movable pivot axis is mounted at the seat; said backrest being simultaneously pivotable about the movable pivot axis mounted at the seat; a reclining mechanism provided for said backrest and inclining a guide element and a spring arrangement, with said guide element cooperating with said spring arrangement and with said means defining said movable pivot axis; said reclining mechanism ensuring that the backrest moves through a larger pivot angle than the pivot angle of the seat during pivoting of the backrest; said backrest containing a backrest plate member capable of pivotal motion; a guide arrangement provided for said backrest plate member; an adjustment mechanism actuatable during the pivotal motion of the backrest plate member for drawing the backrest plate member along said guide arrangement downardly towards the seat; means defining a common pivot axis for said adjustment mechanism of the backrest plate member and the reclining mechanism of the backrest; said rigid seat support means further including means defining a fixed pivot axis situated in fixed spaced relationship to said stationary pivot axis and about which there is pivotable said common pivot axis; said adjustmet mechanism comprising a transmission lever pair; said transmission lever pair interconnecting said common pivot axis and said fixed pivot axis and being rotatable about said fixed pivot axis; said transmission lever pair extending past said fixed pivot axis; and said transmission lever pair during the movement of the common pivot axis initiating a movement of the backrest plate member which is greater in comparison thereto. PG,22 - View Dependent Claims (2, 3, 4)
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5. A reclining chair, comprising:
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rigid seat support means; first pivot means provided at said rigid seat support means for defining a stationary first pivot axis; second pivot means provided at said rigid seat support means for defining a stationary second pivot axis in spaced relationship to said stationary first pivot axis; a seat member for supporting the buttocks of an occupant; said seat member having a rear edge and a region remote from said rear edge; said remote region of said seat member being supported at said first pivot means to pivot about said stationary first pivot axis for effecting a substantially downward motion of said rear edge of said seat member; third pivot means provided at said rear edge of said seat member for defining a movable third pivot axis having an arcuate motion about said stationary first pivot axis; a backrest structure for supporting the back of an occupant; a reclining mechanism for imparting a rearward reclining motion to said backrest structure in relation to said substantially downward motion of said rear edge of said seat member such that the angular extent of said reclining motion of said backrest is greater than the angular extent subtended about said stationary first pivot axis by said substantially downward motion of said seat member; said reclining mechanism including a guide element and a spring arrangement and said guide element cooperating with said spring arrangement and pivotably supported at said third pivot means to pivot about said movable third pivot axis for participating in said substantially downward motion of said rear edge of said seat member; said guide element having a predominantly vertical guide portion; said backrest structure including guide means for translatably guiding said backrest structure along said predominantly vertical guide portion of said guide element of said reclining mechanism; a control mechanism for defining in cooperation with said rear edge of said seat member a reclining motion of said reclining mechanism and for simultaneously defining a downward motion of said backrest structure toward said seat member along said predominantly vertical portion of said guide element of said reclining mechanism in dependent relation to said reclining motion; fourth pivot means provided at said control mechanism for defining a movable fourth pivot axis having an arcuate motion about said stationary second pivot axis; and said control mechanism including a transmission lever pair pivotably mounted at said second pivot means to pivot about said stationary second pivot axis for defining said arcuate motion of said movable fourth pivot axis and for operatively connecting said control mechanism with said backrest structure for effecting said downward motion of said backrest structure by an amount greater than said arcuate motion of said movable fourth pivot axis. - View Dependent Claims (6, 7, 8)
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Specification