JPH0533763A - Oscillating plate rotation obstructing mechanism for compressor - Google Patents

Abstract

PURPOSE:To reduce noise generated between the oscillating gear and the fixed gear of an oscillating plate compressor. CONSTITUTION:The shank part of a fixed gear 11 is constituted of a plurality of bar-like elastic bodies 12, and they are inserted into a deeper hole 15 than the length of the bar-like elastic body provided in a cylinder block 14.

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 As shown in FIG. 3, a conventional oscillating plate type compressor includes a main shaft 31, a shaft rotor 32, an oscillating plate 33, an oscillating plate 34, a ball bearing 35, a fixed bearing 36 and a fixed cylinder in a cylinder block 37. Have. Further, one end of an actuating rod 38 is attached to the rocking plate 33, and a piston 39 is attached to the other end.
Is attached.

In this compressor, the rotary motion given to the main shaft 31 is transmitted to the shaft rotor 32 having a surface inclined with respect to a surface orthogonal to the main shaft, and the shaft rotor 3
Rotate 2. The rotational movement of the shaft rotor 32 is
It is converted into reciprocating motion by the rocking plate 33, and the actuating rod 38 drives the piston 39 to perform compression.

By the way, in order to convert the rotational movement of the shaft rotor 32 into a reciprocating movement, the oscillating plate 33 must not rotate. Therefore, the fixed gear 3 in which the shank portion is non-rotatably provided on the cylinder block 37 by using a key or the like.
Rotation is prevented by meshing the teeth of No. 6 with the teeth of the oscillating gear 34 crimped on the oscillating plate 33. A ball bearing 35 that smoothly swings the swing plate 33 is provided between the oscillating gear 34 and the fixed gear 36. Also,
The ball bearing 35 supports the oscillating plate 33 by applying an axial force to the oscillating plate 33 from the spring 41 whose one end is provided inside the shank portion of the fixed gear 36 and whose one end is pressed by the adjusting screw 40.

[0005]

In the conventional oscillating plate compressor, when the teeth of the oscillating gear and the teeth of the fixed gear mesh with each other, a knocking noise or a rubbing noise between the teeth is generated. This sound is transmitted to the cylinder block via the fixed gear and contributes to the noise of the compressor. In particular, when the tip of the shank comes into direct contact with the adjusting screw, the cushioning effect of the spring is lost, so that there is a problem that a louder noise is generated between the teeth. It is an object of the present invention to reduce compressor noise due to noise generated between a fixed gear and an oscillating gear.

[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 the rotation of the rocking plate by engaging the gears crimped on the rocking plate and the shank portion with the cylinder block such that the gears mesh with teeth. 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 of a compressor including a spring, the shank portion is composed of a plurality of rod-shaped elastic bodies, the rod-shaped elastic bodies are provided in the cylinder block, and the depth is greater than the length of the rod-shaped elastic bodies. Insert it into a deep hole Wobble plate rotation preventing mechanism of the compressor, characterized in Rukoto is obtained.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of the present invention. Here, the same components as those of the conventional one are designated by the same reference numerals, and the description thereof will be omitted. The fixed gear 11 of this embodiment has a plurality of (about 3 to 7)
It has four elastic material rod-shaped shanks 12 here. The fixed gear 11 is integrally formed of the same material as the shank 12 and the gear portion 13, and only the shank 12 has elasticity by annealing or the like.
Here, a perspective view of the fixed gear 11 is shown in FIG. On the other hand, in the cylinder block 14, four shank holes 15 corresponding to the elastic rod-shaped shank 12 are provided.
A spring hole 16 for accommodating the spring 41 is provided at the center of the two holes. As shown in FIG. 1, a plurality of shanks 12
Are respectively inserted into the shank holes 15. In this way, by using a plurality of shanks, the shank can be provided so as not to rotate without using a key or the like. Further, the spring 41 is inserted into the spring hole 16 to apply an axial force to the fixed gear 34 side to the oscillating gear 34 side. In addition, shank hole 1
The depth of 5 is such that when the shank 12 is inserted, a void having a predetermined length or more exists. That is, even when the shank 12 moves to the cylinder block 14 side for some reason, the tip of the shank 12 does not come into contact with the bottom of the hole 15.

When the compressor having such a structure is operated, the vibration generated on the tooth surfaces of the oscillating gear 34 and the fixed gear 11 is absorbed by the shank 12 of the fixed gear 11, and the vibration transmitted to the cylinder block 14 is reduced. Can be made Even if axial force is applied to the fixed gear 11 from the oscillating gear 34 due to the eccentricity, the shank 12 does not contact the bottom of the hole 15 and only the spring 41 receives the force. Vibration caused by the contact of the sting screw 40 and transmission of the vibration to the cylinder block can be prevented.

[0009]

According to the present invention, the shank portion of the fixed gear is composed of a plurality of rod-shaped elastic bodies and is inserted into a hole deeper than the length of the rod-shaped elastic bodies provided in the cylinder block. It is possible to reduce noise during operation of the oscillating plate compressor.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view of a fixed gear used in the compressor shown in FIG.

FIG. 3 is a sectional view of a conventional oscillating plate compressor.

[Explanation of symbols]

 11 Fixed Gear 12 Elastic Rod Rod Shank 13 Gear Part 14 Cylinder Block 15 Shank Hole 16 Spring Hole 31 Main Shaft 32 Shaft Rotor 33 Oscillating Plate 34 Oscillating Gear 35 Ball Bearing 36 Fixed Gear 37 Cylinder Block 38 Actuating Rod 39 Piston 40 Adjusting screw 41 Spring

Front page continuation (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 held non-rotatably by a cylinder block are engaged with teeth of the gear so as to prevent rotation of the rocking plate. 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. In a oscillating plate rotation prevention mechanism of a compressor including a spring for, the shank portion is constituted by a plurality of rod-shaped elastic bodies,
A oscillating plate rotation preventing mechanism for a compressor, wherein the rod-shaped elastic body is provided in the cylinder block and is inserted into a hole having a depth deeper than a predetermined length of the rod-shaped elastic body.