Adjustable armrest assembly for chair

#1. Field of the Invention

#The present invention relates to an adjustable armrest assembly, and more particularly to an adjustable armrest assembly for a chair.

#2. Description of the Related Art

#FIG. 1 is a perspective view of an adjustable armrest assembly in accordance with the preferred embodiment of the present invention;

#FIG. 2 is an exploded perspective view of the adjustable armrest assembly as shown in FIG. 1;

#FIG. 3 is a perspective view of a slide of the adjustable armrest assembly as shown in FIG. 2;

#Referring to the drawings and initially to FIGS. 1–5, an adjustable armrest assembly for a chair in accordance with the preferred embodiment of the present invention comprises an arm support 1 having an end formed with a connecting body 10, a slide 2 slidably mounted and detachably locked on the connecting body 10 of the arm support 1, and an armrest 3 secured to the slide 2.

#The slide 2 is substantially rectangular and has a substantially inverted U-shaped cross-section. The slide 2 is adjustably mounted on the connecting body 10 of the arm support 1. The slide 2 has an inside formed with a slide slot 20 mounted on the connecting body 10 of the arm support 1. The slide 2 has two side walls each formed with a toothed portion 21 having a plurality of arc-shaped locking grooves 210. Each of the two side walls of the slide 2 has a distal end formed with a hook-shaped limit portion 24 rested on a rim of the connecting body 10 of the arm support 1 to prevent the slide 2 from detaching from the connecting body 10 of the arm support 1. The slide 2 has a face formed with a screw bore 22 communicating with the slide slot 20 and two spaced through holes 23 each communicating with the slide slot 20.

#The connecting body 10 of the arm support 1 is substantially rectangular. The connecting body 10 of the arm support 1 has two sides each provided with a locking block 4 detachably engaged with the respective toothed portion 21 of the slide 2, and an elastic member 5 biased between the locking block 4 and the connecting body 10 of the arm support 1 to push the locking block 4 toward the respective toothed portion 21 of the slide 2. The locking block 4 is detachably locked in either one of the locking grooves 210 of the respective toothed portion 21 of the slide 2. Each of the two sides of the connecting body 10 of the arm support 1 is formed with a stepped receiving recess 11 to receive the locking block 4 and the elastic member 5. The connecting body 10 of the arm support 1 has a face formed with an elongated guide slot 12 isolated from the receiving recess 11. A guide screw 6 is screwed into the screw bore 22 of the slide 2 and has a distal end slidably mounted in the guide slot 12 of the connecting body 10 of the arm support 1.