Claims
- 1. A motor-driven compressor (1) comprises a drive shaft (13) driven by an electric actuator (8) and acting on a crank mechanism (15) having a crank (15A) to which a connecting rod (16) is eccentrically connected, the connecting rod (16) is connected to a piston (17) movable in a corresponding cylinder (20), wherein the cylinder (20) has a longitudinal axis (W) inclined in a non-parallel relation to the axis (X) of the drive shaft (13) at an angle (a) other than 90.degree., and the connecting rod (16) connected to the piston (17) has a longitudinal axis (K) which intersects the plane in which the crank (15A) lies during at least part of the stroke of the piston (17) in the cylinder (20).
- 2. A motor-driven compressor according to claim 1, wherein the connecting rod (16) is connected to the piston (17) and to the crank (15A) by means of corresponding ball-and-socket joints (19, 30).
- 3. A motor-driven compressor according to claim 2, wherein the ball-and-socket joint (19) which cooperates with the small end of the connecting rod (16A) is associated with a seat (29) formed eccentrically in the crank (15A).
- 4. A motor-driven compressor according to claim 1, wherein the cylinder (20) comprises a cylinder body (40) connected to a compressor body (26), the cylinder body (40) having a chamber (43) in which the connecting rod (16) moves, the chamber communicates with a cavity (5) inside a casing (2) of the motor-driven compressor (1) by means of a duct (13A) provided longitudinally in the drive shaft (13) and connected to a pipe (13C) extending into a lower region (5A) of the cavity (5) inside the casing (2).
- 5. A motor-driven compressor according to claim 4, wherein a duct (44) in the crank is connected to the duct (13A) in the drive shaft (13) and communicates with the seat (29) in which the ball-and-socket joint (19) associated with the small end of the connecting rod (16A) is disposed.
- 6. A motor-driven compressor according to claim 4, wherein the cylinder body (40) has a flanged end (41) associated with the compressor body (26).
- 7. A motor-driven compressor according to claim 6, wherein the compressor body (26) is cup-shaped and has a lateral wall (56) which houses a portion (8A) of the electric actuator (8), the wall (56) cooperating, by means of threaded connection elements (55) disposed beside the actuator (8), with a support member (6) disposed below the actuator (8).
- 8. A motor-driven compressor according to claim 1, wherein the crank (15A) moves on a mechanical coupling member (21) disposed in a respective seat (26A) in the compressor body (26).
Priority Claims (1)
Number |
Date |
Country |
Kind |
T094A0754 |
Sep 1994 |
ITX |
|
Parent Case Info
This application is a 371 of PCT/EP95/02176, filed Jun. 7, 1995.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/EP95/02176 |
6/7/1995 |
|
|
3/27/1997 |
3/27/1997 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO96/10131 |
4/4/1996 |
|
|
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4718830 |
Middleton et al. |
Jan 1988 |
|
Foreign Referenced Citations (4)
Number |
Date |
Country |
1047406 |
Dec 1953 |
FRX |
719503 |
Apr 1942 |
DEX |
2436407 |
Feb 1976 |
DEX |
2179709 |
Mar 1987 |
GBX |