An Automobile Air Conditioning Compressor

Abstract

An automotive air conditioning compressor includes a crankshaft, a shell, an end cover, a rear balance block, a front balance block, a belleville spring, a thrust bearing, a rear rolling bearing, and a front rolling bearing.

Claims

1-9. (canceled)

10. An automotive air conditioning compressor comprising: a crankshaft, a shell, an end cover, a rear balance block, a front balance block, a belleville spring, a thrust bearing, a rear rolling bearing, and a front rolling bearing; wherein the shell is connected with the end cover; the shell is connected with the outer diameter of the rear rolling bearing; the rear main journal of the crankshaft is connected with the inner diameter of the rear rolling bearing; the outer diameter of the front rolling bearing is connected with the end cover; the front main journal of the crankshaft is connected with the inner diameter of the front rolling bearing; the outer end faces of the two crank arms of the crankshaft rod journal are respectively connected with the rear balance block and the front balance block; the outer side of the front balance block is connected with the belleville spring; and between the rear balance block and the shell or between the belleville spring and the end cover, at least one of which is connected with a thrust bearing.

11. The automotive air conditioning compressor of claim 10, wherein a thrust bearing is connected between the rear balance block and the shell, and a thrust bearing is connected between the belleville spring and the end cover.

12. The automotive air conditioning compressor of claim 10, wherein the thrust bearing is a single direction ball thrust bearing.

13. The automotive air conditioning compressor of claim 10, wherein the thrust bearing is a cylindrical roller thrust bearing.

14. The automotive air conditioning compressor of claim 10, wherein the thrust bearing is a single direction needle roller thrust bearing.

15. The automotive air conditioning compressor of claim 14, wherein the hardness of the needle roller of the single direction needle roller thrust bearing is 60HRC65HRC.

16. The automotive air conditioning compressor of claim 15, wherein the surface roughness Ra of the washer raceway of the single direction needle roller thrust bearing is 0.15 m0.2 m.

17. The automotive air conditioning compressor of claim 16, wherein the hardness of the washer of the single direction needle roller thrust bearing is 60HRC65HRC.

18. The automotive air conditioning compressor of claim 17, wherein the hardness of the needle roller of the single direction needle roller thrust bearing is 62HRC, the surface roughness Ra of the washer raceway is 0.18 m and the hardness of the washer is 62HRC.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG. 1 is the sectional view of the automotive air conditioning compressor adopting the thrust washer in the technical field of prior art;

[0013] FIG. 2 is the sectional view of the invention;

[0014] FIG. 3 is the partial exploded view of the Part I in FIG. 2.

DETAILED DESCRIPTION

[0015] The preferred embodiments of the present invention will be described in further details with reference to the accompanying drawings. It is to be noted that the description of the embodiments is to help the understanding of the present invention, but not to limit the invention. Besides, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0016] As shown in FIG. 2 and FIG. 3, an automotive air conditioning compressor includes the crankshaft 1, the belleville spring 3, the shell 4, the end cover 5, the rear balance block 6, the front balance block 7, the thrust bearing 8, the rear rolling bearing 9, and the front rolling bearing 10. The shell 4 is connected with the end cover 5; the shell 4 is connected with the outer diameter of the rear rolling bearing 9; the rear main journal of the crankshaft 1 is connected with the inner diameter of the rear rolling bearing 9; the outer diameter of the front rolling bearing 10 is connected with the end cover 5; the front main journal of the crankshaft 1 is connected with the inner diameter of the front rolling bearing 10; the outer end faces of the two crank arms of the rod journal of the crankshaft 1 are respectively connected with the rear balance block 6 and the front balance block 7; the outer side of the front balance block 7 is connected with the belleville spring 3; between the rear balance block 6 and the shell 4 or between the belleville spring 3 and the end cover 5, at least one of which is connected with a thrust bearing 8.

[0017] Because of the application of thrust bearing 8, the above mentioned technical solution efficiently decreases the abrasion of the shell 4 and end cover 5 during the rotation of the crankshaft 1, prevents the generation of the metal debris, improves the operating environment for the components, keeps the components surfaces from the damage of the metal debris and extends the service life of the compressor parts. More specifically, the thrust bearing 8 is connected between the rear balance block 6 and the shell 4, and between the belleville spring 3 and end cover 5. This technical solution completely prevents the contact face between the crankshaft 1 and the shell 4 and the end cover 5 from abrasion during the operation of the crankshaft 1, prevents the generation of metal debris, avoids the expansion of the axial clearance of the crankshaft 1, effectively eliminates the stuck of crankshaft 1 when in operation, and improves the compressor operating performance and increases the service life.

[0018] More specifically, the thrust bearing 8 can be a single direction ball thrust bearing, or a single direction cylindrical roller thrust bearing, or a single direction needle roller thrust bearing. The embodiment of the present invention adopts the single direction needle roller thrust bearing. The hardness of the needle roller of the said single direction needle roller thrust bearing is 60HRC-65HRC. The surface roughness Ra of the washer raceway is 0.15 m-0.2 m. The hardness of the washer is 60HRC-65HRC. In the embodiment, the hardness of the needle roller of the single direction needle roller thrust bearing is 62HRC, the surface roughness Ra of the washer raceway is 0.18 m and the hardness of the washer is 62HRC. The rated load of the said single direction needle roller thrust bearing C a=14.1 KN with CO a=56 KN efficiently improves the performance of the thrust bearing and increases the service life and then improves the working quality, operating efficiency and service life of the compressor.

[0019] The embodiments of the present invention have been described in details with reference to the drawings, but the invention is not limited to the embodiments described above. It is well known to those skilled in the art that various changes, modifications, substitutions and alterations may be made without departing from the principles and spirit of the invention, which also fall within the scope of the invention.