JPH01190975A - Rotary swash plate-type compressor - Google Patents

Abstract

PURPOSE:To reduce noise damping vibration, generated in the inside of a compressor, by providing a vibration damping member to be arranged between a supporting member, which supports the central part of a swivel plate to a cylinder block side, and a cylinder block. CONSTITUTION:A rotary swash plate 5, driven by a rotary main shaft 4, is housed in a cylindrical casing 1 forming two or more cylinders 33. The rotary swash plate 5 arranges in its front surface a swivel plate 6, and it is connected to a piston 31 mounted and fitted into the cylinder 33. The swivel plate 6 is supported in its central part by a shaft part 72 arranged in a side of a cylinder block 3 of the cylindrical cashing 1. A vibration damping member, which mounts an elastic unit 83 to be interposed between a metal made outer cylinder 81 and inner cylinder 82, is arranged between the shaft part 72 and the cylinder block 3. Thus damping vibration of a compressor, noise is prevented.

Description

Detailed Description of the Invention [Industrial Application Field 1] The present invention relates to a rotating swash plate type pressure wUtyi, and in particular, it relates to a rotating swash plate type pressure wUtyi, and in particular, to a rotating swash plate fixed to a rotating main shaft. , Several phrases are attached to the cylinder block side.

[Conventional Technique v#I This type of rotary swash plate compressor, as shown in Fig. 11,
A crank chamber 2 defined between a cylinder block 3 integrally formed at one end of the cylindrical casing 1 and a front housing (not shown) that closes the other end of the cylinder block 3 and the cylindrical casing. A rotating main shaft 4 is supported by the front housing, extends into the crankshaft 2, and has a rotating swash plate 5 fixed thereto, a swing plate 6 facing the rotating swash plate 5, and a center of the swing plate 6. and a support member 7 that supports the section. The support member 7 is attached to a fitting hole 31 formed in the cylinder block 3, with rotation around the axis being restricted by a key 11. The support member 7 is also biased toward the swinging member 6 by a coil spring 9. In this way, the bevel gear 71 formed on the support member 7,
The meshing state with the bevel gear 61 formed on the rocking plate 6 is maintained. The meshing of the bevel gears 61 and 71 prevents the swing plate 6 from rotating.

[Problems to be solved by the defense] However, in the above-mentioned conventional technology, the crank chamber 2
The support member 7 supporting the rotating main shaft 4 extending from the key 1
A fitting hole 31 formed in the cylinder block 3 by 1
Since the rotation around the axis is regulated,
There is metal contact between the cylinder block 3 and the support portion 7. As a result, the mechanical vibrations generated due to the operation of the compressor are reduced and may cause noise in the vehicle interior.

Therefore, an object of the present invention is to provide a rotary swash plate compressor that damps vibrations generated inside the compressor, reduces transmission of vibrations to the outside, and reduces noise inside a vehicle.

[Means for Solving the Problems] The present invention includes a cylindrical casing, a cylinder block having a plurality of cylinders provided at one end of the cylindrical casing, and a cylinder block that closes the cylinder block and the other end of the cylindrical casing. a crank chamber formed between the front housing and the front housing; a rotating main shaft extending into the crank chamber that is bearing on the front housing; and a rotating main shaft fixed to the rotating main shaft and having an inclined surface on the cylinder block side. a rotating swash plate;
A rocking plate disposed so as to be rotatably in contact with the inclined surface of the rotating swash plate, a piston connected to a peripheral portion of the rocking plate and fitted into the cylinder, and the rocking plate. The rotary swash plate compressor has a support member that supports the central portion of the moving plate on the cylinder block side, characterized in that a vibration damping member is disposed between the support member and the cylinder block.

[Function] According to this rotary swash plate compressor, vibrations generated during operation of the compressor are transmitted to the cylinder block. However, the vibration is absorbed and damped by a vibration damping member disposed between the cylinder block and the support member. Therefore, the amount of vibration generated during the operation of the compressor that is transmitted to the outside via the rotating main shaft is reduced.

[Example] Hereinafter, an example of the present invention will be described based on the accompanying drawings.

FIG. 1 is a sectional view of essential parts showing a first embodiment of the present invention, showing a cylindrical casing 1, a cylinder block 3 integrally formed at one end thereof, and the other end of the cylindrical casing. A crank chamber 2 defined between a closed front housing (not shown) and a cylinder block 3, and a rotating swash plate 5 that is supported by a bearing on the front housing, extends into the crank chamber 2, and has a rotating swash plate 5 fixed thereto. It has a main shaft 4 and a support member 7 that supports a central portion of a swing plate 6 facing a rotating swash plate 5.

As shown in FIGS. 5 and 6, the support member 7 includes a bevel gear 71 that meshes with a bevel gear 61 formed on the cylinder block 3 side of the swing plate 6, and a bevel gear 71 formed on the cylinder block 3. A shaft portion 72 located inside the fitting hole 32 is provided. A four spherical portion 75 is formed in the center of the bevel gear 71 on the swing plate 6 side. A notch 73 is formed on the cylinder block 3 side of the bevel gear 71. Furthermore, serrations 74 are formed on the shaft portion 72 along the longitudinal direction of the shaft.

The cylinder block 3 that fits and supports this support member 7 is
As shown in FIG. 2, it has a fitting hole 32 formed in the center and a plurality of cylinders 33 formed around the fitting hole 32. Pistons 31 (FIG. 1) are slidably disposed in these cylinders 33. Also, the piston 31 is Ji1
It is connected to the periphery of the iIJ board 6. This fitting hole 32
Serrations 34 are formed along the longitudinal direction on the inner periphery, and a stopper 36 is provided protruding from the opening 35.

Due to the engagement between the notch 73 formed on the cylinder block 3 side of the bevel gear 71 and the stopper 36 protruding from the opening 35 of the fitting hole 32, an abnormality occurs when the fluid is compressed, and the support member 7 becomes excessively large. Prevents it from rotating.

A cylindrical vibration damping member (hereinafter referred to as a rubber bush) 8 is disposed between the support member 7 and the fitting hole 32.

As shown in FIGS. 3 and fA4, the rubber bushing 8 is composed of a metal outer cylinder 81, a metal inner cylinder 82, and an elastic body 83 such as rubber interposed between them. Serrations 84 and 85 are formed along the axial direction on the outer circumference and inner circumference of the outer cylinder 81 and the inner cylinder 82, respectively.

As shown in FIGS. 7 and 8, the rubber bush 8 is inserted into the shaft portion 72 of the support portion 447 via a ring 87, and is fitted so that the respective serrations 74 and 85 mesh with each other.

Furthermore, the support member 7 to which this rubber bushing 8 is fixed,
It is inserted into the fitting hole 32 of the cylinder block 3 as shown in FIG. In this state, the serrations 34 formed on the inner periphery of the fitting hole 32 and the serrations 84 of the outer cylinder 81 engage with each other, and the serrations 85 of the inner cylinder 82 and the serrations 74 formed on the shaft portion 72 of the support member 7 engage with each other. Rotation around the axis of the support member 7 is prevented by the engagement with the support member 7.

9 and 10 show a second embodiment of the present invention, in which the rubber bush 8B2 is omitted and the elastic body 83 is directly press-fitted into the shaft portion 72 of the support member 7. . This allows the configuration of the rubber bush 8 to be simplified.

It is also possible to omit the outer cylinder and press-fit the serrations 34 formed along the longitudinal direction and the elastic body 8.3 directly into the inner periphery of the fitting 32 of the cylinder block 3.

[Effect] According to the present invention, as described above, since the vibration damping member is disposed between the support member that supports the rocking plate and the cylinder block to which the support member is attached, the vibration of the compressor is reduced. Mechanical vibrations associated with operation are attenuated inside the compressor, reducing transmission of vibrations to the outside of the compressor, and making it possible to prevent noise within the vehicle interior.

[Brief explanation of the drawing]

1 to 8 show a first embodiment of the present invention, in which FIG. 1 is a sectional view of main parts, FIG. 2 is a front view showing a cylinder block, and FIG. 4 is a front view showing the vibration damping member, FIG. 4 is a sectional view taken along IV-IV, I in FIG. 3, FIG. 5 is a front view showing the support member, and FIG. 7 is a front view showing how the supporting member and the vibration damping member are attached, FIG. 8 is a partial sectional view taken along the line ■-■ in FIG. 7, and FIG. 9 is a sectional view taken along line Vl. , Figure 10 is
Embodiment 2 of the present invention is shown. FIG. 9 is a front view showing how the support member and the vibration damping member are attached, and FIG. 10 is taken along the line X-X in FIG. 9. Partial sectional view along, 1st
FIG. 1 is a sectional view of a main part of a conventional example. 1... Cylindrical casing, 2... Crank chamber, 3...
... Cylinder block, 4... Rotating main shaft, 5... Rotating swash plate, 6... Rocking plate, 7... Supporting member, 71...
・Bevel gear, 72... Shaft, 73... Notch, 74
...Serration, 8...Vibration damping member (rubber bush), 81...Outer cylinder, 82...Inner cylinder, 83...
- Elastic body, 84.85...serrations. Fig. 1 Fig. 3 ■→ Fig. 4 Final Fig. 7 ■→ Fig. 9 Fig. 10 Fig. 11 Procedure Qi 1 Seisho (self-published) March 7, 1986

Claims (1)

[Claims] 1. a cylinder block having a cylindrical casing and a plurality of cylinders provided at one end of the cylindrical casing;
a crank chamber formed between the cylinder block and a front housing that closes the other end of the cylindrical casing; a rotating main shaft supported by bearings on the front housing and extending into the crank chamber; A rotary swash plate that is fixed and has an inclined surface on the side of the cylinder block, a rocking plate that is arranged to rotatably contact the rotary swash plate, and a rocking plate that is connected to the periphery of the rocking plate. and a rotary swash plate compressor having a piston fitted into the cylinder and a support member that supports the center portion of the rocking plate on the cylinder block side, in which vibration is generated between the support member and the cylinder block. A rotary swash plate compressor characterized by being provided with a damping member.