KR19990040252U - Seizure prevention shoe of automobile swash plate compressor - Google Patents

Abstract

This issue relates to the seizure prevention shoe of an automobile swash plate type compressor, and includes a piston inserted into an inclined swash plate (3) and a cylinder (4) that are integral with a driving shaft (2) installed on a central axis of a housing (1). In the seizure prevention shoe of the automobile swash plate type compressor in which the swash plate (3) is connected and driven through a pair of connecting shoes (12, 13) to the swash plate mounting opening (11);

Characterized in that it further comprises a lubrication rapid channel (30) which is a recessed groove extending outwardly to the planar connection portion (22) of the shoe (12, 13);

By providing lubricating oil supply means as a channel in which the connecting surface between the shoe and the piston is embedded, it is possible to improve the lubrication property and to prevent the seizure of the piston during overcompression, thereby preventing the failure in advance.

Description

Seizure prevention shoe of automobile swash plate compressor

The present invention relates to a fire prevention shoe (Shoe) in the vehicle air conditioning apparatus,

More specifically, it is designed to prevent seizure during overcompression operation due to the piston drive in the swash plate compressor that provides the compression power in the vehicle air conditioner, and to improve the performance and prolong the service life by increasing the lubrication of the operation. It is about giving.

Widely used as the main power source of the automotive air conditioning system, the swash plate type compressor arranges a plurality of cylinders in a single housing, and a swash plate integrally formed so that the pistons fitted in each cylinder are inclined with the shaft at the central opening. By driving through the sliding member, the reciprocating is performed to repeatedly compress and discharge.

Therefore, the conventional swash plate type compressor is slopingly mounted on the shaft, the swash plate which drives the piston which strokes the radially arranged cylinder inner wall in the shaft direction, and the swash plate is inserted into the swash plate accommodation space of the piston. And connecting members such as shoes,

When the swash plate integral with the shaft rotates, the piston performs a straight reciprocating motion in the shaft direction by a stroke distance induced with respect to the inclination angle of the swash plate, thereby compressing and discharging.

It is an object of the present invention to increase the connection lubrication activity between the swash plate and the shoe in a swash plate compressor in a vehicle air conditioner having the above-described general configuration.

The seizure preventing shoe of the swash plate type compressor of the present invention proposed to realize the above object further provides lubrication means to the shoe connected to the piston to increase the lubricity of the connecting drive and thereby cause seizure and failure during overcompression. To prevent it.

1 is an overall cross-sectional view of a swash plate compressor for explaining the present invention.

2 is a side view and a front view showing a seizure preventing shoe of a conventional swash plate compressor;

3 is a front view and a side view of the shoeman showing the seizure preventing shoe of the automobile swash plate type compressor of the present disclosure.

* Explanation of symbols for the main parts of the drawings *

1: housing

2: shaft

3: slate

4: cylinder

5: piston

11: swash plate mounting opening

12,13: Shu

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the anti-settling shoe of the swash plate compressor of the present invention.

1 is an overall cross-sectional view of a swash plate compressor for explaining the present invention.

2 is a side view and a front view showing a seizure preventing shoe of a conventional swash plate compressor;

3 is a front view and a side view of the shoeman showing the seizure preventing shoe of the automobile swash plate type compressor of the present disclosure.

A schematic configuration and an operation configuration of a swash plate compressor of the related art shown in FIG. 1 will be described;

The shaft 2, which is divided into a plurality and installed across the central axis of the housing 1 constituting the entire casing, is driven by a power transmitted by a belt or the like from an outside not shown,

A disk-shaped swash plate 3 is obliquely processed on the shaft 2 to be rotated integrally or separately and fixedly processed as a fixed member.

A plurality of cylinders 4, which are radially arranged perforated bodies, are disposed in the inner wall side of the housing 1, and the pistons 5 fitted to the cylinders 4 are inserted with the connecting surfaces at both ends. . In the central portion of the piston (5) of such a configuration, a swash plate mounting opening (11) for housing the swash plate is installed,

A part of the swash plate (3) is inserted into the swash plate mounting opening (11) of the recessed open groove shape in which it is inserted, and is a mechanical configuration for giving a straight reciprocating stroke distance according to the insertion insertion and the rotation of the shaft (2). A pair of connecting shoes 12 and 13 having a (Semi-sphere) shape are interposed.

Such shoe 12, 13 is shown in FIG.

It is a shape having a rough hemispherical workpiece and has a hemispherical surface 21 and a planar connecting portion 22. The planar connecting portion 22 is formed with a recessed hole 14 and an outer inclined processing portion 15 closed at the center. It is adapted to perform the operation.

Therefore, if the shaft 2 is rotated as described above, the swash plate 3 which is integrally processed or separately processed and fixed is also rotated, and the shaft 2 direction generated by the inclination angle formed by the swash plate 3 is rotated. By rotating the hemispherical shoes 12 and 13 as much as the swing distance of the piston 5, the piston 5 constitutes a predetermined stroke distance, thereby driving the piston 5 inside the cylinder 4.

In the above-described configuration, in the conventional configuration, between the swash plate 3 surface and the shoes 12, 13, the lubricant is mixed with the compressed fluid and circulated in the lower crankcase C without being lubricated. Since lubrication is performed only by scattering of lubrication, the lubrication action is not smooth, causing sintering during overload, which causes a failure in the driving unit, which causes the failure of the entire compressor.

In the configuration of the present invention, as shown in the second to third degrees,

In the construction of the shoes 12 and 13, it is characterized in that the processing is formed as a recess in which the lubrication rapid channel 30 extending to the depression hole 14 in the center of the shoes 12 and 13 is embedded.

The lubrication rapid channel 30 has a formation that is fluidly connected to the external environment so that lubricating oil, which is a fluid from the external environment of the shoe 12, 13, can flow therein, and preferably, as shown,

The lubrication rapid channel 30 is a plurality of straight channels that intersect at the center to the planar connecting portions 22 of the shoes 12 and 13, and more preferred embodiments thereof;

As shown in the drawing, it is preferable to use the recessed grooves that are processed into roughly crisscross (+) shapes that cross each other at their centers.

As described above, the lubrication quickening channel 30, which is a recessed groove extending outwardly in the planar connection portion 22 of the lubricating quickening channel 30, is included in the circulating compressed fluid. By facilitating the flow to the connection surface, the lubricity between the piston 5 and the planar connection portion 22 of the hemispherical shoes 12 and 13 is greatly increased.

The seizure preventing shoe of the automobile swash plate type compressor of the present invention as described above is further provided as a channel in which a lubrication oil supply means is embedded in the connection surface between the shoe and the piston, thereby improving lubricity and preventing the seizure of the piston during overcompression. It will have the effect of preventing in advance.

Claims (3)

Inclined swash plate (3) integral with the drive shaft (2) installed on the central axis of the housing (1), In the swash plate type compressor in which the swash plate 3 is connected and driven through a pair of connecting shoes 12 and 13 to the swash plate mounting opening 11 of the piston 5 fitted inside the cylinder 4. In anti-settling shoes; The squeeze prevention shoe of the swash plate type compressor of claim 4, further comprising a lubrication rapid channel 30, which is a recessed groove extending outwardly to the planar connecting portion 22 of the shoe 12,13. The lubrication rapid channel 30 according to claim 1, wherein the lubrication quickening channel 30 is a plurality of linear channels crossing each other at the center of the planar connecting portion 22 of the shoe 12, 13, the seizure prevention of the automobile swash plate type compressor. Shuu. According to claim 1, wherein the lubrication oil supply groove 20 is the lubrication oil supply channel 30, wherein the lubrication speed channel 30 crosses at the center of the plane connecting portion 22 of the shoe (12, 13) Securing prevention shoe of automobile swash plate type compressor characterized by the linear channel of +) shape.