Anti-abrasion device and reciprocating compressor having the same
AssigneeLG Electronics Inc.
InventorsJin-Kook Kim, Kyeong-Ho Kim, Young-Hwan Kim, Kyoung-Jun Park, Jong-Mok Lee
Life of this patent
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Abstract
Disclosed are an anti-abrasion device and a reciprocating compressor having the same, whereby a sleeve is fabricated with an outer diameter smaller than an inner diameter of a connecting rod to be non-press-fitted, thereby facilitating an assembly of the sleeve, and also the deformation of an inner diameter of the sleeve is prevented during the assembly of the sleeve, thereby preventing beforehand an increase in an input load of a motor unit due to the deformation of the sleeve and an abrasion of a pin of a crankshaft.
Claims17
A reciprocating compressor comprising:
- a crankshaft coupled to a rotor of a motor unit and configured to transfer a rotational force;
- a connecting rod coupled to the crankshaft and configured to convert a rotational force of the crankshaft into a linear motion of the piston;
- and
- a sleeve interposed between the crankshaft and connecting rod and configured to serve as a bearing,
- wherein the connecting rod is provided with a connecting portion formed at one side thereof in an annular shape in which the sleeve is inserted, and the sleeve has an outer diameter smaller than an inner diameter of the connecting portion of the connecting rod at a room temperature,
- wherein the sleeve is provided with a shaft-directional supporting element configured to support the sleeve with respect to the connecting portion of the connecting rod in the shaft direction, and
- wherein the shaft-directional supporting element is a supporting portion integrally formed with the sleeve, the supporting portion having an outer diameter larger than the inner diameter of the connecting portion of the connecting rod.
A reciprocating compressor comprising:
- a crankshaft coupled to a rotor of a motor unit and configured to transfer a rotational force;
- a connecting rod coupled to the crankshaft and configured to convert a rotational force of the crankshaft into a linear motion of the piston;
- and
- a sleeve interposed between the crankshaft and connecting rod and configured to serve as a bearing,
- wherein the connecting rod is provided with a connecting portion formed at one side thereof in an annular shape in which the sleeve is inserted, and the sleeve has an outer diameter smaller than an inner diameter of the connecting portion of the connecting rod at a room temperature, and
- wherein the sleeve comprises a bearing portion interposed between the connecting rod and the crankshaft, the bearing portion having an outer diameter smaller than an inner diameter of the connecting rod, and a supporting portion formed at one end of the bearing portion in a flange shape and supported by the connecting rod in the shaft direction.
An anti-abrasion device wherein a bearing, disposed between a crankshaft for transferring a rotational force of a motor and a connecting rod, coupled to the crankshaft for converting a rotary motion into a linear motion, is formed of a material different from the connecting rod, the material having a thermal expansion coefficient higher than that of the connecting rod, and wherein the bearing comprises a bearing portion interposed between the connecting rod and the crankshaft, the bearing portion having an outer diameter smaller than an inner diameter of the connecting rod, and a supporting portion formed at one end of the bearing portion in a flange shape and supported by the connecting rod in the shaft direction.
Dependencies are inferred from the claim text.