KR101488284B1 - Structure for supporting swash plate type compressor in order to enhancing lubrication - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure of a swash plate type compressor for use in an automobile, and more particularly, to a swash plate compressor and a thrust washer, To improve the durability of the swash plate type compressor.

Compressor, lubrication

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swash plate type compressor,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure of a swash plate type compressor for use in an automobile, and more particularly, to a swash plate compressor and a thrust washer, To improve the durability of the swash plate type compressor.

A compressor constituting an air conditioner of an automobile is a device that selectively receives the power of an engine transmitted through a pulley through an intermittent action of an electromagnetic clutch, sucks refrigerant from an evaporator, and discharges the refrigerant to a condenser.

There are various types of compressors according to the structure for performing compression, and a type widely used for automobiles is a swash plate type compressor.

1 shows a structure of a conventional swash plate type compressor 1 and includes a refrigerant discharge chamber 6a and 6b and a refrigerant suction chamber 7a and a refrigerant suction chamber 7b on the inner surface thereof, A cylinder 5 installed inside the front and rear housings 2 and 3 and a piston 4 coupled to reciprocate bores of the cylinder 5 in a linear reciprocating motion, A drive shaft 10 rotatably coupled through the front housing 2 and the cylinder 5 and a drive shaft 10 installed to be rotatable together with the drive shaft 10 so as to be inclined around the drive shaft 10, A swash plate 9 slidably coupled to the piston 4 to linearly reciprocate the piston 4 and a valve unit 8 provided outside the front and rear cylinders 2 and 3, .

As described above, the swash plate compressor receives the power of the engine by the intermittent action of the electromagnetic clutch, and by the phase change of the swash plate 9 rotating in the inclined state together with the drive shaft 10 when the drive shaft 10 rotates, (4) advances and retreats.

When the piston 4 is advanced or retracted, a low pressure acts on the piston 4 to open the suction hole of the valve unit 8, while closing the discharge hole to open the refrigerant suction chambers 7a and 7b The refrigerant is sucked into the bore through the suction hole.

The sucked refrigerant is compressed by the compression stroke of the piston 4, and the suction hole of the valve unit 8 is closed by the pressure at this time, while the compressed refrigerant is discharged to the refrigerant discharge chambers 6a, 6b.

As the swash plate 9 is rotated in a tilted state during the operation of the compressor as described above, the swash plate 9 is caused to move left and right due to the axial load, There is a concern. Therefore, in order to prevent this, both ends of the swash plate 9 are provided with thrust bearings 11 and thrust washers 12, respectively.

When the refrigerant gas is introduced by the low pressure acting during the suction stroke of the piston 4 during the forward and backward movement of the piston 4, the swash plate 9 is moved forward and backward together with the refrigerant gas flowing in. The lubricating oil is introduced into the crankcase through the front and rear housings 2 and 3 as shown by arrows in FIG. 1, and the swash plate 9 is moved forward and backward It is scattered.

However, the lubricating oil scattered as described above is somewhat insufficient for smoothly lubrication of the thrust bearing 11 and the thrust washer 12 placed at both ends of the swash plate 9. In particular, the thrust washer 12 has a thrust There is a problem that the abrasion resistance is remarkably deteriorated when the coating surface of the sliding portion is worn as compared with the bearing 11. [

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a technical object of the present invention to provide a structure of a supporting structure of a swash plate type compressor capable of improving the lubricity of the swash plate supporting structure of the compressor.

According to an aspect of the present invention, there is provided a swash plate compressor comprising a swash plate compressor and a thrust washer, wherein the swash plate compressor includes a thrust washer portion and a flow passage through which lubricating oil flows during a suction stroke of the piston, So that the lubricating oil is supplied along the flow path.

The supporting structure of the swash plate type compressor according to the present invention having the above structure effectively supplies the lubricating oil to the sliding portion of the thrust washer so that the durability of the thrust washer is remarkably increased, It is a very advanced invention with the effect that the lubrication oil is smoothly supplied to the crankcase in which the swash plate is placed and the lubrication of the overall compressor is greatly improved.

Hereinafter, the structure of the support structure of the swash plate type compressor for improving the lubricity of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood, however, that the disclosed embodiments are provided by way of example to enable those skilled in the art to more fully understand the spirit of the present invention. Accordingly, the present invention is not limited to the following drawings, but may be embodied in other forms.

In addition, unless otherwise defined, the terms used in the description of the present invention have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. In the following description and the accompanying drawings, A detailed description of known functions and configurations that may be unnecessarily blurred is omitted.

FIG. 2 is a structural view of the supporting structure of the swash plate type compressor of the present invention, and FIGS. 3 and 4 are enlarged perspective views of the swash plate type compressor of the present invention.

The supporting structure of the swash plate type compressor according to the present invention is a swash plate type compressor in which a driving shaft of a swash plate type compressor and a thrust washer portion are formed in a flow passage through which lubricating oil flows during a suction stroke of a piston, To improve the durability of the swash plate type compressor.

The support structure of the swash plate compressor according to the present invention includes a thrust washer 40 coupled to the inside of a thrust bearing 11 provided at both ends of the swash plate 9, And a rear thrust washer 40b having one side in contact with the front thrust washer 40a and the other side in contact with the bearing 11. The front thrust washer 40a is in contact with both ends of the front thrust washer 40a.

5, washer fluid flow grooves 41 are formed at one side of the front thrust washer 40a and the rear thrust washer 40b, respectively. The front thrust washer 40a, And the rear thrust washer 40b are coupled such that the washer fluid flow grooves 41 are opposed to each other so that the lubricant oil flows into the washer fluid flow grooves 41 formed in the respective washers 40a and 40b.

The support structure of the swash plate type compressor according to the present invention is such that the forward thrust washer 40a and the washer fluid groove 41 of the rear thrust washer 40b enter the inner center portion of the drive shaft 10 provided below the piston 4, A lateral flow path 20 is formed in the axial direction of the drive shaft 10. The lateral flow path 20 is formed parallel to the axial direction of the drive shaft.

In the driving shaft 10, a lubricating oil flowing into the washer fluid flow grooves 41 of the front thrust washer 40a and the rear thrust washer 40b is flowed in the downward direction of the drive shaft 10, And the vertical flow passage 30 is formed at a position where the front thrust washer 40a and the rear thrust washer 40b are mutually engaged with each other, Are formed at two positions on the drive shaft 10 corresponding to both end portions of the swash plate 9, respectively.

The horizontal flow path 20 formed in the drive shaft 10 is formed with holes for flowing the lubricating oil flowing into the drive shaft 10 along the washer flow groove 41 to the outside of the drive shaft 10 A first hole 51 is formed at a position corresponding to the thrust washer 40 attached to the front end of the swash plate 9 on the transverse flow path 20 of the drive shaft 10, A second hole 52 is formed at a position corresponding to the thrust washer 40 attached to the rear end of the swash plate 9 on the transverse flow path 20 of the swash plate 9.

A third hole 53 is formed at one end of the transverse flow passage 20 and an exhaust hole 21 is formed at the other end of the transverse flow passage 20 through the rear end surface of the drive shaft 10. The first hole 51, the second hole 52, the third hole 53 and the discharge hole 21 are formed so as to pass through the drive shaft 10 so that the outside of the drive shaft 10 and the drive shaft 10 The lubricating oil is supplied to the rotating crank chamber.

The lubricating action of the swash plate support structure of the compressor for improving the lubricity of the present invention having the above-described structure is as follows.

That is, the lubricating oil is introduced together with the refrigerant gas during the suction stroke of the piston 4, and the introduced lubricating oil is supplied to the front and rear thrust washers 40a and 40b of the thrust washer 40 provided at both ends of the swash plate 9 And flows into the transverse flow grooves 20 and the vertical flow grooves 30 of the drive shaft 10. [

3 and 4, the installation direction of the washer fluid groove 41 of the thrust washer 40 is perpendicular to the upper side of the drive shaft 10 (i.e., the y direction of the three-dimensional coordinate system) And may be formed in the direction perpendicular to the outer side of the drive shaft 10 (i.e., the z direction of the three-dimensional coordinate system).

The lubricating oil introduced into the transverse flow grooves 20 lubricates the front and rear thrust washers 40a and 40b itself while passing through the washer flow grooves 41. The lubricating oil introduced into the transverse flow grooves 20 The thrust washer 40 (see FIG. 1) flows to the outside of the drive shaft 10 through the first hole 51, the second hole 52, the third hole 53 and the discharge hole 21 formed in the transverse flow groove 20, And the inside of the crankcase where the piston 4 and the swash plate 9 are located.

The lubricating oil introduced into the vertical flow groove 30 is also discharged downward of the drive shaft 10 to lubricate the inside of the crankcase in which the swash plate 9 and the cylinder 5 are located.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. And substitutions are to be construed as falling within the scope of protection of the present invention.

1 is a schematic view of a general swash plate type compressor,

2 is a structural view of a support structure of a swash plate type compressor according to the present invention,

3 and 4 are enlarged perspective views of the swash plate compressor of the present invention,

5 is a perspective view of a thrust washer of a swash plate type compressor according to the present invention.

Description of the Related Art [0002]

One; Conventional conventional swash plate compressor

2; A front housing 3; Rear housing

4; Piston 5; cylinder

6a, 6b; Discharge chambers 7a and 7b; Suction chamber

8; Valve unit 9; Swash plate

10; driving axle

11; Thrust bearings 12; Thrust washer

20; A transverse flow path 21; Horizontal flow exhaust hole

30; Vertical flow

40; Thrust washer

40a; Forward thrust washer

40b; Rear thrust washer

41; Washer flow groove

51; A first hole 52; The second hole

53; The third hole

Claims (4)

And a swash plate (9) which is inclined around the drive shaft (10) and rotates together with the drive shaft (10) A thrust washer 40 constituted by a front thrust washer 40a and a rear thrust washer 40b each having a washer fluid flow groove 41 formed on one side thereof is coupled to both ends of the swash plate 9, A transverse flow path (not shown) for flowing the lubricating oil introduced into the washer fluid flow grooves 41 of the front thrust washer 40a and the rear thrust washer 40b in the axial direction of the drive shaft 10, 20 are formed, A vertical flow path (not shown) for flowing the lubricating oil introduced into the washer fluid flow grooves 41 of the front thrust washer 40a and the rear thrust washer 40b into the drive shaft 10 in the lower direction of the drive shaft 10, 30 are formed, The vertical flow passage (30) Is formed at a position corresponding to both end portions of a swash plate (9) on which the thrust washer (40) is installed. delete 2. The apparatus according to claim 1, wherein the transverse flow path (20) A first hole 51 is formed at a position corresponding to the thrust washer 40 attached to the front end of the swash plate 9 on the transverse flow path 20 of the drive shaft 10, A second hole 52 is formed at a position corresponding to the thrust washer 40 attached to the rear end of the swash plate 9 on the transverse flow path 20 of the drive shaft 10, Wherein the first hole (51) and the second hole (52) are formed to penetrate the drive shaft (10) and lubricating oil is supplied to the outside of the drive shaft (10) rescue. The method of claim 3, A third hole 53 is formed at one end of the transverse flow path 20 and a discharge hole 21 is formed at the other end of the third hole 53. The discharge hole 21 passes through the rear end surface of the drive shaft 10, Wherein the third hole (53) and the discharge hole (21) are formed so as to pass through the drive shaft (10) and lubricating oil is supplied to the outside of the drive shaft (10) .

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