Armrest

Abstract

The present disclosure relates to an armrest, comprising a first rod component, around the outer periphery of which a second rod component is slidably adjustably sleeved. One end of the second rod component is rotatably provided with a third rod component. The first rod component has a first mounting hole penetrating through a tail end thereof, and the first rod component is connected to the side of the seat plate through the first mounting hole. The third rod component has a second mounting hole penetrating through a tail end thereof, and the third rod component is connected to the side of the seat back through the second mounting hole.

What is claimed is: 
     
         1 . An armrest, comprising a first rod component, wherein:
 a second rod component is slidably adjustably sleeved around an outer periphery of the first rod component, and one end of the second rod component is rotatably provided with a third rod component; and   a first mounting hole is formed at a tail end of the first rod component in a penetrating manner, and the first rod component is connected to a side of a seat plate through the first mounting hole; and   a second mounting hole is formed at a tail end of the third rod component in a penetrating manner, and the third rod component is connected to a side of a seat back through the second mounting hole; and   when the seat back rotates relative to the seat plate, the second rod component and the third rod component rotate accordingly.   
     
     
         2 . The armrest according to  claim 1 , wherein the first rod component comprises a first mounting block and a first rod section, the first mounting hole penetrates through the first mounting block, and the first rod section is of a hollow structure, with both side end faces of the first rod section having first sliding slots penetrating therethrough, wherein one of the first sliding slots is fixedly provided with multiple protrusions on both sidewalls. 
     
     
         3 . The armrest according to  claim 2 , wherein the second rod component comprises a second mounting block and a second rod section, and the second rod section is of a hollow structure and is slidably sleeved around an outer periphery of the first rod section. 
     
     
         4 . The armrest according to  claim 3 , wherein both side end faces of the second rod section are fixedly provided with annular rings and have first setting holes penetrating therethrough, and the first setting holes are located within the corresponding annular rings; and
 one side end face of the second rod section is provided with two second setting holes penetrating therethrough, and the two second setting holes are arranged on two sides of the first setting hole and located within the annular ring.   
     
     
         5 . The armrest according to  claim 4 , wherein the annular ring with the second setting holes is provided with a first closure cover, and one end of the first closure cover is fixedly provided with two buckles that extend into the corresponding two second setting holes; and
 the other annular ring contains a second closure cover, and one end of the second closure cover close to the second rod section is fixedly provided with a limiting rod that passes through the two first sliding slots; and   two protrusions on a same side of the first sliding slot or the protrusion and the sidewall of the first sliding slot cooperate to engage with the limiting rod; and   both ends of the limiting rod are provided with grooves that do not contact the protrusions, and an elastic member is connected between the limiting rod and the first closure cover.   
     
     
         6 . The armrest according to  claim 2 , wherein two force-bearing rods are arranged on an inner wall of the second rod section, one end of the first rod section is provided with a second sliding slot, and the two force-bearing rods are slidably arranged within the second sliding slot. 
     
     
         7 . The armrest according to  claim 2 , wherein the third rod component comprises two third mounting blocks and a third rod section, the third mounting blocks are fixed at one tail end of the third rod section, and the second mounting block is rotatably arranged between the two third mounting blocks, with a connecting shaft passing through the two third mounting blocks and the second mounting block. 
     
     
         8 . The armrest according to  claim 7 , wherein the second mounting hole is provided at a tail end of the third rod section. 
     
     
         9 . An armrest, comprising:
 a first rod component configured for being fixedly connected to a seat plate; and   a second rod component slidably sleeved around an outer periphery of the first rod component; and   a third rod component configured for being fixedly connected to a seat back and rotatably connected to the second rod component; and   a limiting assembly arranged between the first rod component and the second rod component, comprising a first sliding slot provided on the first rod component and at least one protrusion; and   a limiting rod passing through the first sliding slot; and   an elastic member configured for driving the limiting rod to engage with the protrusion;   wherein by pressing the limiting rod to disengage the engagement, sliding adjustment of the second rod component relative to the first rod component is achieved.   
     
     
         10 . The armrest according to  claim 9 , wherein the first rod component comprises a first rod section with a hollow structure, the second rod component comprises a second rod section, and the first sliding slot penetrates through end faces at two side of the first rod section; and
 the first sliding slot is arc-shaped, and the protrusion is provided on at least one sidewall of the first sliding slot.   
     
     
         11 . The armrest according to  claim 10 , wherein there are a plurality of protrusions spaced apart on a same sidewall of the first sliding slot, forming a multi-position adjustment mechanism. 
     
     
         12 . The armrest according to  claim 9 , wherein both ends of the limiting rod are provided with grooves, and when the grooves are pressed and moved to disengage from the protrusion, sliding adjustment is achieved. 
     
     
         13 . The armrest according to  claim 10 , wherein the limiting assembly further comprises a first closure cover and a second closure cover fixed to the second rod section, one end of the limiting rod is connected to the elastic member, and the other end is fixed to the second closure cover. 
     
     
         14 . The armrest according to  claim 13 , wherein the elastic member is a spring, with both ends of the spring abutting against the limiting rod and the first closure cover respectively. 
     
     
         15 . The armrest according to  claim 13 , wherein an annular ring is provided on the second rod section, and both the first closure cover and the second closure cover are arranged inside the annular ring. 
     
     
         16 . The armrest according to  claim 15 , wherein one end of the first closure cover is provided with a buckle, an end face of the second rod section is provided with a second setting hole located inside the annular ring, and the buckle is engaged in the second setting hole. 
     
     
         17 . The armrest according to  claim 10 , wherein an anti-derailment structure is provided between the first rod section and the second rod section, wherein the anti-derailment structure comprises a second sliding slot provided on the first rod section and a force-bearing rod provided on an inner wall of the second rod section, both the force-bearing rod and the second sliding slot are arc-shaped, and the force-bearing rod slides within the second sliding slot. 
     
     
         18 . The armrest according to  claim 10 , wherein the second rod component further comprises a second mounting block, the third rod component comprises a third mounting block, and both the third mounting block and the second mounting block are disk-shaped; and
 the second rod component further comprises a connecting shaft, and the second mounting block and the third mounting block are rotatably connected through the connecting shaft.   
     
     
         19 . The armrest according to  claim 18 , wherein the third rod component further comprises a third rod section, and a tail end of the third rod section extends to form a support end for mounting the armrest. 
     
     
         20 . The armrest according to  claim 9 , wherein a cross-sectional shape of the protrusion is one of a trapezoid, triangle, or rectangle.