JPH0533762A - Oscillating plate rotation obstructing mechanism for compressor - Google Patents

Abstract

PURPOSE:To absorb torque applied from the oscillating gear of an oscillating plate compressor to the fixed gear by means of the fixed gear, so as to reduce torque transmitted to a cylinder block and restrain vibration and noise. CONSTITUTION:A fixed gear is used, after an elastic body 13 made of synthetic rubber or resin is positioned between a gear part 11 and a shank part 12, and it is valcanized and stuck, in the fixed gear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rocking plate rotation preventing mechanism for a compressor, and more particularly to a fixed gear fixed to a cylinder block.

[0002]

2. Description of the Related Art Generally, an oscillating plate compressor includes a main shaft 41, a shaft rotor 42, an oscillating plate 43, an oscillating gear 44, a ball bearing 45, and a fixed door 46 in a cylinder block 47, as shown in FIG. Have Further, one end of an actuating rod 48 is attached to the rocking plate 43, and a piston 49 is attached to the other end.
Is attached.

In this compressor, the rotary motion given to the main shaft 41 is transmitted to the shaft rotor 42 having a surface inclined with respect to a surface orthogonal to the main shaft, and the shaft rotor 4
Rotate 2. The rotational movement of the shaft rotor 42 is
It is converted into reciprocating motion by the rocking plate 43, and the actuating rod 48 drives the piston 49 to perform compression.

By the way, in order to convert the rotary motion of the shaft rotor 42 into a reciprocating motion, the oscillating plate 43 must not rotate. Therefore, by using the key 50 or the like, the teeth of the fixed gear 46 whose shank portion is non-rotatably provided in the cylinder block 47 and the teeth of the oscillating gear 44 crimped to the swing plate 43 are engaged to rotate the shaft. It is blocking. A conventional fixed gear 46 is shown in FIG. A ball bearing 45 is provided between the oscillating gear 44 and the fixed gear 46 to make the swinging plate 43 swing smoothly. The ball bearing 45 is provided inside the shank portion of the fixed gear 46 and has one end adjusted by the adjusting screw 5.
The axial force from the spring 52 pressed by the swing plate 4
3 to support the rocking plate 43.

[0005]

In the conventional oscillating plate compressor, in order to prevent the rotation of the oscillating gear,
Torsional torque of about 200 kgcm works on the fixed gear. This force is transmitted from the shank part of the fixed gear to the cylinder block, vibrating the cylinder block,
It is making noise. The present invention absorbs the torque applied from the oscillating gear to the fixed gear during the operation of the oscillating plate compressor by the fixed gear, reduces the torque transmitted to the cylinder block, and reduces the vibration of the compressor and the noise associated with the vibration. The purpose is to reduce

[0006]

According to the present invention, the rotation of the oscillating plate of the oscillating plate compressor for converting the rotational motion of the main shaft into the reciprocating motion by using the oscillating plate to perform the compression operation is prevented. A rocking plate rotation preventing mechanism that prevents rotation of the rocking plate by meshing gears crimped on the rocking plate with a shank portion that is held by a cylinder block so that it cannot rotate A fixed gear, a ball bearing located between the gear and the fixed gear to support the rocking plate and smooth the rocking of the rocking plate, and for pressing the fixed gear to the gear. In a oscillating plate rotation preventing mechanism for a compressor including a spring, the oscillating plate rotation preventing mechanism for a compressor, wherein the fixed gear has the shank portion and the gear portion joined together via an elastic material. Is obtained.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Since the configuration other than the fixed gear is the same as that of the conventional rocking plate compressor, only the fixed gear will be described here. FIG. 1 shows a first embodiment of the present invention. The fixed gear of this embodiment has a gear portion 11 and a shank portion 12, and these gear portion 11 and shank portion 12 are provided.
And are joined via an elastic material 13. Here, the elastic material 13 is made of synthetic rubber or resin and is joined to the metal gear portion 11 and the shank portion 12 by a vulcanization bonding method. When such a fixed gear is used in the oscillating plate compressor, the torque applied from the oscillating gear 44 is received by the gear portion 11 and absorbed by the elastic body 13,
The torque applied to the shank portion 12 is reduced. Since the torque applied to the shank portion 12 is reduced, the vibration of the cylinder block is reduced and the noise of the compressor can be reduced.

FIG. 2 shows a second embodiment. This is an example in which the elastic body 13 is provided near the teeth of the gear portion 11. Further, FIG. 3 shows a third embodiment. This is the shank part 12
This is an example in which is inserted into the gear portion 11.

[0009]

According to the present invention, a fixed gear in which a gear portion and a shank portion are joined via an elastic body is used for a rocking plate rotation preventing mechanism, so that the vibration of the rocking plate compressor during operation is reduced. Also, noise due to vibration can be reduced.

[Brief description of drawings]

FIG. 1 is a sectional view of a fixed gear according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a fixed gear according to a second embodiment of the present invention.

FIG. 3 is a sectional view of a fixed gear according to a third embodiment of the present invention.

FIG. 4 is a sectional view of a conventional oscillating plate compressor.

FIG. 5 is a sectional view of a conventional fixed gear.

[Explanation of symbols]

 11 Gear Part 12 Shank Part 13 Elastic Material 41 Main Shaft 42 Shaft Rotor 43 Swing Plate 44 Oscillating Gear 45 Ball Bearing 46 Fixture 47 Cylinder Block 48 Actuating Rod 49 Piston 50 Key 51 Adjusting Screw 52 Spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hitoshi Akuzawa 20 Kotobukicho, Isesaki City, Gunma Sanden Co. Ltd.

Claims (1)

Claim: What is claimed is: 1. A oscillating plate for preventing rotation of the oscillating plate of a oscillating plate compressor for converting a rotary motion of a main shaft into a reciprocating motion by using an oscillating plate to perform a compression operation. A rotation preventing mechanism, wherein a rocking gear swaged to the rocking plate and a shank portion which is non-rotatably held by a cylinder block and whose teeth are meshed with each other prevent the rocking plate from rotating. A gear, a ball bearing located between the rocking gear and the fixed gear to support the rocking plate and smooth the rocking of the rocking plate, and the fixed gear is pressed against the rocking gear. And a shank portion and a gear portion of the fixed gear are joined to each other via an elastic material. Blocking mechanism.