초록 ▼

A chair caster in the invention mainly includes a wheel holder, a spindle, a wheel axle, two wheel bodies, two shake-proof washers and two caps. Each of the two wheel bodies is provided with a recessed chamber disposed in an inner side thereof and capable of being fitted with a shake-proof washer ma

A chair caster in the invention mainly includes a wheel holder, a spindle, a wheel axle, two wheel bodies, two shake-proof washers and two caps. Each of the two wheel bodies is provided with a recessed chamber disposed in an inner side thereof and capable of being fitted with a shake-proof washer made of a soft rubber material, thereby enabling the chair caster to lower shaking and noise in rolling under the resilience of the shake-proof washers and providing better strength to the whole structure of the chair caster so as to prolong the working life.

대표청구항 ▼

1. A chair caster comprising: a wheel holder having a spindle hole disposed at an upper portion thereof and a through hole disposed therein in a transversal direction; a spindle having one end extending into said spindle hole of said wheel holder and the other end protruding upwards; a wheel

1. A chair caster comprising: a wheel holder having a spindle hole disposed at an upper portion thereof and a through hole disposed therein in a transversal direction; a spindle having one end extending into said spindle hole of said wheel holder and the other end protruding upwards; a wheel axle capable of extending through said through hole of said wheel holder and having two ends respectively protruding outwardly out of both sides of said wheel holder, and a ring groove disposed proximate to each said end; two wheel bodies; each wheel body being capable of being rotatably connected a respective one of said both sides of said wheel holder, two axle housings; each axle housing being respectively disposed at a center of a respective one of two opposite inner sides of said two wheel bodies, each axle housing being formed with a respective axle hole; and each provided with a circumferential ridge disposed therein for being engaged with said ring groove of each said end of said wheel axle; and, characterized by said two wheel bodies each having a recessed chamber and a shake-proof washer, wherein said recessed chamber is disposed in said inner side of each said wheel body so that a circumferential wall being thinner than the recess chamber is formed between said recessed chamber and an outer wall surface of each said wheel body; said shake-proof washer made of a rubber material is capable of being fitted in said recessed chamber. 2. The chair caster as claimed in claim 1, wherein each of said two sides of said through hole of said wheel holder is formed with a respective opening for being inserted by said two axle housings of said two wheel bodies.3. The chair caster as claimed in claim 1, wherein each of two opposite outer sides of said two wheel bodies is formed with a respective recess, and each said recess has an annual groove provided with a plurality of engagement grooves disposed therein; and, wherein two caps are capable of respectively covering on said two recesses of said two wheel bodies, and each said cap is provided with a plurality of engagement members disposed on an inner side thereof for being engaged in said plurality of engagement grooves of each said annual groove of each said recess.