Copper alloy piston shoe
View Patent ↗A swash plate type compressor is disclosed, wherein a shoe, having a first surface slidably disposed on a swash plate and a second surface received in a pocket formed in a piston, is formed from a copper alloy.
1. A swash plate type compressor comprising:
a housing including a cylinder block;
a swash plate rotatably mounted in said housing and supported by a rotatable drive shaft, said swash plate having a first substantially flat surface and a second substantially flat surface;
at least one piston disposed in the cylinder block, said piston including a pair of spaced apart pockets formed therein; and
at least one shoe having a first portion and a second portion, the first portion having a first surface slidably engaging one of the first surface and the second surface of said swash plate and a second surface adapted to be received by the second portion, the second portion having a first surface adapted to receive the second surface of the first portion and a second surface received in one of the pockets of said piston, said shoe facilitating a slanting of said swash plate and a transfer of rotation of said swash plate to a reciprocating motion of said piston, at least the first portion of said shoe being formed from a copper alloy.
2. The compressor disclosed in claim 1 , wherein the second surface of the second portion of said shoe is substantially spherical in shape.
3. The compressor disclosed in claim 1 , wherein the second portion of said shoe is formed from steel.
4. The compressor disclosed in claim 1 , wherein the copper alloy contains at least two elements from a group consisting of Cu, Zn, Sn, Pb, Ni, and Mn.
5. The compressor disclosed in claim 4 , wherein a composition of the copper alloy contains at least two elements selected from the group consisting of Cu (50-97%), Zn (0-45%), Sn (0-15%), Pb (0-15%), Ni (0-32%), and Mn (0-5%), in the respective ranges indicated.
6. The compressor disclosed in claim 1 , wherein said swash plate is formed from steel.
7. The compressor disclosed in claim 1 , wherein the pockets of said piston are formed from steel.
8. The compressor disclosed in claim 1 , wherein the second portion of said shoe is formed from a copper alloy.
9. A swash plate type compressor comprising:
a housing including a cylinder block;
a swash plate formed from steel and rotatably mounted in said housing and supported by a rotatable drive shaft, said swash plate having a pair of spaced apart substantially flat surfaces;
at least one piston disposed in the cylinder block, said piston including a pair of spaced apart pockets formed therein; and
at least one shoe having a first surface and a second surface, the first surface slidably engaging one of the surfaces of said swash plate, the second surface received in one of the pockets of said piston, said shoe facilitating a slanting of said swash plate and a transfer of rotation of said swash plate to a reciprocating motion of said piston, said shoe formed from a copper alloy.
10. The compressor disclosed in claim 9 , wherein the second surface of said shoe is substantially spherical in shape.
11. The compressor disclosed in claim 9 , wherein the copper alloy contains at least two elements from a group consisting of Cu, Zn, Sn, Pb, Ni, and Mn.
12. The compressor disclosed in claim 11 , wherein a composition of the copper alloy contains at least two elements selected from the group consisting of Cu (50-97%), Zn (0-45%), Sn (0-15%), Pb (0-15%), Ni (0-32%), and Mn (0-5%), in the respective ranges indicated.
13. The compressor disclosed in claim 9 , wherein the pockets of said piston are formed from steel.