JPH02181089A - Rotary compressor - Google Patents

Abstract

PURPOSE:To improve the seizure resistance by providing a groove connected with a compression chamber at one end in a surface facing a side plate of a vane. CONSTITUTION:If a shaft 2 is rotated, the volume of compression chambers 8a, 8b formed of a rotor 1, a cylinder 6, a vane 9, a side plate F, R, 3, 7, is increased and decreased repeatedly, so function of a compressor is achieved. In this case, lubrication oil 12 scraped corresponding to rotation of the vane 9 gets through a gap between a chip seal 13 and a groove 9f into a groove 9e in a vane side surface. The lubrication oil 12 is thus supplied uniformly to slide surfaces 9c, 9d between the vane 9 and the side plates F, R, 3, 7 uniformly. Lubrication to the chip seal 13 is performed simultaneously.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotary compressor, and particularly to a rotary compressor suitable for vehicle air conditioning.

[Conventional technology]

As a means of preventing seizure between the vanes and the size plate of a conventional rotary compressor, it has been proposed to apply surface treatment to the sliding parts, as described in, for example, Japanese Utility Model Application No. 63-28890. There is.

[Problem to be solved by the invention]

Since rotary compression has a structure in which the vanes slide against the side plates, consideration must be given to seizure resistance. For this reason, surface treatment has conventionally been performed as described in the above-mentioned publication, but this has had the problem of significantly increasing costs.

An object of the present invention is to provide a highly reliable rotary compressor with improved seizure resistance without increasing costs.

[Means to solve the problem]

Object 1 is achieved by providing a groove, one end of which communicates with the compression chamber, on the surface of the vane facing the size plate.

[Effect]

According to the means of the present invention, when the vane is rotated, the lubricating oil in the compression guide is scraped up by the tip sill and the vane, and this scraped up lubricating oil enters the groove provided in the vane. . Therefore, the lubricating oil accumulated in this groove is evenly supplied to the sliding surface between the vane and the sight plate 1. Moreover, since this groove can be provided in advance with a mold when die-casting the vane, there is no increase in cost.

Therefore, it is possible to provide a highly reliable compressor in which the sliding surfaces of the vanes and the side plates are well lubricated without increasing costs.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, 1 is a rotor that is integrally molded with the shaft 2, and has a pair of vane grooves 1a on the outer circumference at positions 180° opposite to each other.
It has lb. The shaft portion 2 is located at one end I of the rotor.
C), and a large space 1e is provided from the other end surface 1d of the rotor to the inside of the rotor. The rotor shirts l-1 and l-2 have two bearings 5a provided on the front cover 4 with a side plate F3 in between.

The shirt (2) is rotatably supported by 5b.

A cylinder 6 and a side play 1/R7 are stacked on the side play 1/R3 in the axial direction to form a compression chamber 8 between the outer periphery of the rotor, and the compression chamber 8 is formed by the vane groove 1a of the rotor 1, 1. A single vane 9 is inserted through the compression chamber 8a, and the compression chamber 8a is subdivided into a plurality of compression chambers 8a and 8b. Vane 9 located in the large space 1e inside the rotor
A cylindrical sliding surface 9a is formed in the center of the rotor in a direction nearly perpendicular to the vane grooves 1a and 1b of the rotor. The slider 10 is built into the cylindrical sliding surface 9a and is restrained so that it can reciprocate in the axial direction of the cylinder.

A cantilevered slider pin 11 fixed to the side plate R7 is inserted into a hole 10a in the center of the slider 1o.
It is also constrained to rotate around the 1 axis. Note that the slider pin 11 is fixed to the side plate R7 at a position parallel to and eccentric to the rotation axis of the rotor shafts 1 and 2. Further, a groove 9f for mounting a tip seal 13 is provided at the tip of the vane 9, and communicates with this groove to provide a sliding surface 9 for the side plate F3.
A groove 9e is provided in the sliding surface 9d between the side plate R7 and the side plate R7 as shown in the figure.

In such a structure, when the shaft 2 rotates, the volumes of the compression chambers 8a and 8b formed by the rotor 1, cylinder 6, vane 9, and side plates FR, 3, and 7 repeatedly increase and decrease, and the compressor Demonstrate the functions of that time,
Lubricating oil 1 collected as the vane 9 rotates
2 enters the groove 9e on the side surface of the vane through the gap between the tip seal 13 and the groove 9f, and the lubricating oil 12 enters the sliding surface 9c, 9d between the vane 9 and the side plays 1 to FR, 3, and 7. evenly supplied. Furthermore, the tip seal 13 can be lubricated at the same time.

〔Effect of the invention〕

According to the present invention, a highly reliable rotary compressor with improved seizure resistance can be created without increasing costs due to its simple structure (die-cast molding and the ability to supply lubricating oil to the sliding surfaces). The effect is that it can be provided.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a rotary compressor according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along the A-H line in FIG. 1, FIG. 3 is a perspective view of a vane according to an embodiment of the present invention, and FIG. 4 is a detailed view of the tip of the vane. 9. Vane, 9e. Groove, 12. Lubricating oil.

Claims (1)

[Claims] 1. a rotor and a shaft formed coaxially with the rotor; one or more vanes that slide through the rotor in a pair of vane grooves provided at opposing positions on the outer periphery of the rotor; and one or more vanes that are adjacent to the rotor at one location. A cylinder whose inner circumferential surface shape is almost the same as the axis trace drawn by the tip of the vane, front and rear side plates F and R that close both ends of the cylinder and form a compression chamber, and the vane. In a rotary compressor having a tip seal attached to the tip of the vane so as to close a gap between the cylinder and the vane, one end communicates with a groove in which the tip seal is attached to the surface of the vane facing the side plate F/R. A rotary compressor characterized by having grooves.