Chair Leg Rest Assembly

Abstract

A chair leg rest assembly includes a supporting arm pivotally coupled to a chair seat, and a leg rest frame that can slide along and be selectively positioned on the supporting arm for providing a support plane. An upper end of the supporting arm is flanked by two pivot holders that are fixed to the seat. One of the pivot holders has a pawl portion to be engaged with a pawl portion of a pawl core that is received in the upper end of the supporting arm and resiliently pushed outward. As the supporting arm pivots against and is positioned with respect to the pivot holders, the leg rest frame can be retracted under or expanded before the seat. Then the leg rest frame can slide outward and to support a user's stretched legs on the support plane thereof. The leg rest assembly is thereby easy to operate.

1 . A chair leg rest assembly, comprising a positioning base unit, a supporting arm pivotally coupled to the positioning base unit, and a leg rest frame slidably mounted on the supporting arm, therein:
 the positioning base unit having a first pivot holder and a second pivot holder flanking a pivot portion formed atop the supporting arm, and a bolt passing through the first pivot holder, the pivot portion, an axially movable pawl core and the second pivot holder before engaged, wherein the pawl core is received in the pivot portion and resiliently pushed outward, and has an outer side thereof formed with a pawl portion while the second pivot holder is provide with another pawl portion that is configured to engage with the pawl portion of the pawl core, and wherein the supporting arm has at least two positioning holes provide at two ends of an inner side thereof;   the leg rest frame having a sliding channel for the supporting arm to be inserted therein, and a positioning member and a spring being sandwiched between the sliding channel and the supporting arm so that the positioning member is resiliently pressed into and positioned by one corresponding said positioning hole.   
     
     
         2 . The chair leg rest assembly of  claim 1 , wherein the two pivot holders are attached to two laterals of a fastening seat. 
     
     
         3 . The chair leg rest assembly of  claim 1 , wherein a push button provided at an outer side of the second pivot holder is peripherally formed with a plurality of pins and resiliently pushed outward, such that the pins pass through the second pivot holder and abut against the pawl core, whereby pushing the push button makes the engaged pawl portions of the second pivot holder and the pawl core disengage from each other. 
     
     
         4 . The chair leg rest assembly of  claim 1 , wherein the first pivot holder has a retaining recess for providing rotational limits in both directions, and the pivot portion of the supporting arm has an abutting portion so that the abutting portion is movably received in the retaining recess.