JPS6361515B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a rotary compressor.

BACKGROUND ART Conventionally, as shown in FIG. 5, in order to lock an elastic wire in a rolling piston type rotary compressor, a leg b extending perpendicularly to the tip of an elastic wire a is provided, and a leg portion b extending perpendicularly to the tip of the elastic wire a is used to lock the elastic wire in a rolling piston type rotary compressor. It was inserted into the hole and locked.

Problems to be Solved by the Invention However, in such a conventional structure, a large surface pressure is applied to the contact surface of the leg b of the through hole of the cylinder piece c in response to the reciprocating movement of the gate valve d, and the leg b rotates. Because of the movement, the abutment surface and the elastic wire a have a drawback that they are easily worn out.

The present invention solves the above-mentioned conventional drawbacks and aims to improve the life of the elastic wire that constantly biases the partition plate.

Means for Solving the Problems In order to solve the above problems, the present invention disposes an electric motor and a compression mechanism part driven by the electric motor inside a closed container, and connects the compression mechanism part to a crankshaft, a roller and a cylinder. It is composed of a cylinder piece having a shaped cylinder and a partition plate that moves by fitting into a groove provided in the cylinder piece, and a semicircular elastic wire is inserted so that the partition plate and the roller are in contact with each other. and locking one end of the elastic wire to the outer end of the partition plate,
The other end was locked in a stepped groove formed around the entire circumference of one end of a cylinder rotatably fitted into the through hole of the cylinder piece, and the other end of the cylinder was further secured with a retaining fitting. It is something.

Effects According to the present invention, the elastic wire is appropriately elastically deformed in conjunction with the reciprocating sliding movement of the partition plate, and the stepped groove formed in the other end of the elastic wire and the cylinder, and the cylinder and the cylinder part are also connected to each other. Since the elastic wire slides between the through holes of the pieces, wear of the elastic wire can be reduced.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.

In the same figure, 1 is a closed container, 2 is a closed container 1
A motor stator is fixed therein, 3 is a rotor, 4 is a crankshaft fixed to the rotor 3, 5 is a roller into which the crankshaft 4 is fitted, and 6 is a cylinder piece. A partition plate groove 8 in which a partition plate 7 is inserted and slid is provided on the outer periphery of the cylinder piece 6 so as to partially pass through the partition plate 7.
An elastic wire rod 9 is provided for pressing toward. As shown in FIG. 2, this elastic wire 9 is bent into an arc shape along the outer periphery of the cylinder piece 6, and one end is fitted into the mounting hole 7a of the partition plate 7. 11 is a partition plate 7 in the cylinder part 6;
A cylinder 12 made of hard synthetic resin or metal is rotatably fitted into a through hole formed at a position facing the cylinder. Reference numeral 12a denotes a retaining metal fitting fitted to one end of the cylinder 12; 13 denotes a stepped groove formed around the entire circumference at the other end of the cylinder 12; The leg portion 10 of is locked. The shape of the leg portion 10 may be changed as needed so that it does not easily fall out of the stepped groove 13. 14 is an upper bearing piece, and 15 is a lower bearing piece.

In the above configuration, when the compressor is operated, the rotation of the loam 5 causes the partition plate 7 to perform a reciprocating sliding motion. In conjunction with this, the elastic wire 9 is appropriately elastically deformed, and at the same time, the legs 10 of the elastic wire 9 and the grooves 13 of the cylinder 12 and the through holes 11 of the cylinder 12 and the cylinder piece 6
The elastic wire 9 slides at two locations to reduce wear on the elastic wire 9. In addition, since the legs 10 of the elastic wire 9 are bent into a semicircular shape and fitted into the stepped grooves 13 of the cylinder 12, a force acts in the direction F that pushes the cylinder 12 as shown in FIG. It doesn't come off.

Effects of the Invention As is clear from the above embodiments, the rotary compressor of the present invention receives the force from the elastic wire at two locations: the stepped groove and the elastic wire, and the through hole of the cylinder piece and the cylinder. The wear of the elastic wire is suppressed as much as possible, and the life of the elastic wire is improved.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a rotary compressor according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line - - in Fig. 1, Fig. 3 is a partially enlarged view of Fig. 2, and Fig. 4 3 is a cross-sectional view taken along the line --- in FIG. 3, and FIG. 5 is a cross-sectional view of the main parts of a conventional rotary compressor. 4... Crankshaft, 5... Roller, 6... Cylinder piece, 7... Partition plate, 8... Partition plate groove, 9... Elastic wire, 10... Leg, 11... Through hole, 12 …
...Cylinder, 13...Stepped groove.

Claims (1)

[Claims] 1. An electric motor and a compression mechanism part driven by the electric motor are disposed inside an airtight container, and the compression mechanism part is connected to a crankshaft, a roller, a cylinder part having a cylindrical cylinder, and a groove provided in the cylinder part. A semicircular elastic wire is provided so that the partition plate and the roller are in contact with each other, and one end of the elastic wire is engaged with the outer end of the partition plate. and the other end is locked in a stepped groove formed around the entire circumference of one end of a cylinder rotatably fitted into the through hole of the cylinder piece, and the other end of the cylinder is fitted with a retaining fitting. Rotary compressor stopped at.