Claims
- 1. A scroll compressor comprising:
- a closed housing having an oil sump formed therein to accommodate a lubricating oil;
- a stationary scroll member accommodated in said closed housing and having a stationary end plate and a stationary scroll wrap protruding axially from said stationary end plate;
- an orbiting scroll member accommodated in said closed housing and having an orbiting end plate and an orbiting scroll wrap protruding axially from said orbiting end plate so as to engage with said stationary scroll wrap to define a plurality of working pockets therebetween;
- a crank shaft for driving said orbiting scroll member, said crank shaft having a main shaft and an auxiliary shaft formed on opposite sides thereof;
- an electric motor drivingly coupled with said crank shaft;
- a rotation constraint element for preventing rotation of said orbiting scroll member about its own axis while allowing said orbiting scroll member to undergo an orbiting motion relative to said stationary scroll member;
- a bearing member having a main bearing for supporting said main shaft of said crank shaft;
- a bearing frame secured to an inner surface of said closed housing and having an oil passage formed therein so as to extend downwardly into said oil sump;
- an auxiliary bearing mounted on said bearing frame for supporting said auxiliary shaft of said crank shaft; and
- an oil feed device mounted on said bearing frame and engaging with one end of said auxiliary shaft for feeding the lubricating oil in said oil sump through said oil passage.
- 2. A scroll compressor according to claim 1, wherein said oil passage is formed in said bearing frame so as to extend in a radial direction.
- 3. A scroll compressor according to claim 1, wherein said crank shaft axially bears directly against said auxiliary bearing.
- 4. A scroll compressor comprising:
- a closed housing having an oil sump therein to accommodate a lubricating oil;
- a stationary scroll member accommodated in said closed housing and having a stationary end plate and a stationary scroll wrap protruding axially from said stationary end plate;
- an orbiting scroll member accommodated in said closed housing and having an orbiting end plate and an orbiting scroll wrap protruding axially from said orbiting end plate so as to engage with said stationary scroll wrap to define a plurality of working pockets therebetween;
- a crank shaft for driving said orbiting scroll member, said crank shaft having a main shaft and an auxiliary shaft formed on opposite sides thereof;
- an electric motor drivingly coupled with said crank shaft;
- a rotation constraint element for preventing rotation of said orbiting scroll member about its own axis while allowing said orbiting scroll member to undergo an orbiting motion relative to said stationary scroll member;
- a bearing member having a main bearing for supporting said main shaft of said crank shaft;
- a bearing frame secured to an inner surface of said closed housing; and
- an auxiliary bearing mounted on said bearing frame and having a bushing for radially supporting said auxiliary shaft of said crank shaft and a flange integrally formed with said bushing for axially supporting said crank shaft;
- wherein said bearing frame has an oil passage formed therein, extending into said oil sump and communicating said oil sump with said auxiliary bearing.
- 5. A scroll compressor according to claim 4, wherein said oil passage is formed in said bearing frame so as to extend in a radial direction.
- 6. A scroll compressor according to claim 4, wherein said crank shaft axially bears directly against said flange of said auxiliary bearing.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-8432 |
Jan 1995 |
JPX |
|
Parent Case Info
This is a Rule 60 Divisional application of Ser. No. 08/590,464, filed Jan. 23, 1996.
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
61-14492 |
Jan 1986 |
JPX |
Divisions (1)
|
Number |
Date |
Country |
Parent |
590464 |
Jan 1996 |
|