US 11,925,265 B2
Transmission rod assembly and a height-adjustable desk thereof
Lehong Xiang, Ningbo (CN); Tao Lin, Ningbo (CN); Fangyuan Li, Ningbo (CN); Jia Ge, Ningbo (CN); and Lijun Zhao, Ningbo (CN)
Assigned to LOCTEK ERGONOMIC TECHNOLOGY CORP., Ningbo (CN)
Filed by LOCTEK ERGONOMIC TECHNOLOGY CORP., Ningbo (CN)
Filed on Aug. 8, 2022, as Appl. No. 17/818,079.
Claims priority of application No. 202210327303.9 (CN), filed on Mar. 30, 2022; and application No. 202210327331.0 (CN), filed on Mar. 30, 2022.
Prior Publication US 2023/0309688 A1, Oct. 5, 2023
Int. Cl. A47B 9/20 (2006.01); A47B 21/02 (2006.01)
CPC A47B 9/20 (2013.01) [A47B 21/02 (2013.01); A47B 2200/0052 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A transmission rod assembly, wherein it comprises:
a first transmission head, and a plurality of positioning grooves are disposed along a circumferential direction of the first transmission head;
a second transmission head, and a plurality of positioning blocks disposed along a circumferential direction of the second transmission head;
an elastic piece, abutted against the first transmission head or the second transmission head, and the second transmission head and the first transmission head are abutted against each other by use of a restoring force of the elastic piece; the plurality of positioning blocks are cooperated with the plurality of positioning grooves in a positioning manner respectively;
a sleeve pipe, and the sleeve pipe is a hollow structure with both ends open; the second transmission head is mounted at an end of the sleeve pipe, the elastic piece is mounted in the sleeve pipe, and an end of the elastic piece is abutted against the second transmission head;
a first transmission rod, and an end of the first transmission rod protrudes into the other end of the sleeve pipe and is abutted against the other end of the elastic piece, and the sleeve pipe and the first transmission rod are relatively fixed along a circumference of the sleeve pipe; and
a locking assembly, and the locking assembly is mounted on the other end of the sleeve pipe, the locking assembly is cooperated with the sleeve pipe in a limiting manner along the axial direction of the sleeve pipe, and the locking assembly clamps the first transmission rod.