JPH0634176U - Rotating swash plate compressor - Google Patents

Abstract

(57) [Abstract] [Purpose] A rotary swash plate compressor that can reduce assembly costs by reducing the number of parts and facilitate positioning, and improve productivity. To provide. A rotation prevention mechanism of a compressor, which includes a swing gear 61 provided on a swing plate 60 performing a swing motion, a fixed gear meshing with the swing gear 61, and a spherical body 2 interposed therebetween,
The fixed gear 2 and the spherical body 1 are integrated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary swash plate compressor and a mechanism for preventing rotation of internal parts thereof.

[0002]

[Prior art]

 A conventional rotary swash plate compressor is shown in cross-section in FIG. In FIG. 3, the rotary swash plate compressor includes a cylindrical casing 100, a cylinder block 110 having a plurality of cylinders 111 provided at one end of the cylindrical casing 100, and pistons inserted into the cylinders 111. 112, a wedge-shaped rotary swash plate 50, a rotary main shaft 101 supported by a bearing between the cylinder block 110 and the other end wall of the cylindrical casing 100, and extending into the crank chamber 105. And a swinging plate 60. The rotary swash plate 50 is fixed around the rotary main shaft 101 and has an inclined surface 51 on the cylinder block 110 side. The support member has a fixed gear 81 made of a bevel gear and a spherical body 70 rotatably slidingly contacting the center of the fixed gear 81 on the tip end surface of the socket 80 protruding from the inner surface of the crank chamber 105 of the cylinder block 110. The oscillating plate 60 is provided with a oscillating gear 61, which is a bevel gear meshing with a fixed gear 81 and is internally connected to the piston rod 113 at its peripheral portion. The oscillating gear 61 is disposed so that its center portion is in sliding contact with the spherical body 70 and rotatably contacts the inclined surface 51 of the swash plate 50. In this rotary swash plate compressor, a rotary main shaft 101 extends through a swash plate 50 and an oscillating plate 60 and extends inside a cylinder block 110 in a supporting member including a fixed gear 81 and a spherical body 70. The extension end 103 is supported by a radial bearing 104 inside the socket 80.

As described above, in the conventional rotary swash plate type compressor, the rotation blocking mechanism for blocking the rotation of the rocking plate 60 includes a fixed gear 81 provided at the tip of the socket 80 and a rocking gear 61. Are adjacent to each other through the spherical body 70 and are in mesh with each other.

However, in the rotation blocking mechanism of the rotary swash plate compressor described above, if there is play in the through hole provided in the spherical body 70, it is reflected as it is in the play of the swash plate 50 or the socket 80, and is stable. The drawback is that the main shaft cannot bear the load of the swash plate. Therefore, in order to prevent this, there is a spherical body 70 provided with a cylindrical portion extending in the main axis direction so as to be able to stably communicate with the socket 80 (Actual No. 63-52975, hereinafter). , Referred to as Reference Example 1, see).

FIG. 4 is a diagram showing a rotary swash plate compressor according to the first reference example. As shown in FIG. 4, in the rotary swash plate compressor of the reference example 1, in the rotation blocking mechanism of the oscillating plate, the cylindrical portion 72 'of the spherical body 70' is mounted in the hole 82 'of the socket 80'. It has a structure.

[0006]

[Problems to be solved by the device]

 However, since the above-described rotation preventing mechanism meshes the two gears of the fixed gears 81, 81 'and the swing gear 61 via the spherical body 70 or 70', the number of parts increases, It has the drawback of increasing costs. In addition, each component is required to have dimensional accuracy, and in particular, the spherical body 70 described above has a drawback that assembly is difficult and productivity is deteriorated.

Therefore, the technical problem of the present invention is to provide a rotary swash plate type compressor and a rotation blocking mechanism which can reduce the cost by reducing the number of parts.

Further, a second technical problem of the present invention is to provide a rotary swash plate type compressor and a rotation blocking mechanism, which facilitates assembly by facilitating positioning and improve productivity. Especially.

[0009]

[Means for Solving the Problems]

 According to the present invention, an oscillating gear provided on an oscillating plate for oscillating motion of a rotary swash plate type compressor, a fixed gear meshing with the oscillating gear, and the oscillating gear and the fixed gear. In a rotation prevention mechanism for preventing rotation of the oscillating plate by connecting an intervening spherical body in the axial direction, the spherical body is integrated with only one of the oscillating gear and the fixed gear. A rotation preventing mechanism characterized by the above is obtained.

According to the present invention, there is provided a rotary swash plate compressor including the rotation blocking mechanism.

According to the present invention, in the rotary swash plate compressor, the spherical body is integrated with the fixed gear, and the spherical body and the fixed gear have a hole extending in the direction of the main shaft. A rotary swash plate compressor is provided, characterized in that the main shaft is inserted into the hole.

[0012]

[Action]

 In the present invention, in the rotation prevention mechanism for preventing the rotation of the oscillating plate of the compressor, the spherical body is integrated with only one of the oscillating gear and the fixed gear to improve the positioning accuracy and to assemble. Can be facilitated and productivity can be improved.

[0013]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a rotary swash plate type compressor according to an embodiment of the present invention. As shown in FIG. 1, in the rotary swash plate compressor, an outer shell is formed by a cylindrical casing 100. A cylinder block 110 is formed at one end of the cylindrical casing 100, and the other end is sealed by a front housing 120, which defines an internal crank chamber 105. A cylinder head 140 that sucks and discharges a compressed fluid is arranged further outside the cylinder block 110. On the other hand, the electromagnetic clutch 150 is arranged on the protruding portion 121 of the front housing 120 of the cylindrical casing via the radial ball bearing 130.

A rotating main shaft 101 is provided so as to penetrate the inside of the cylinder block 110 from the other end of the cylindrical casing 100. One end 103 of the rotary main shaft 101 is supported inside the socket 10 via a radial bearing 104. The socket 10 is biased from one end of the casing 100 to the other end by a coil spring 106.

Further, the other end of the rotary main shaft 101 is connected to a hub portion 151 of the electromagnetic clutch 150. In the crank chamber 105 of the casing 100, a swash plate 50 and an oscillating plate 60 are provided around the rotating main shaft 101, and one end is supported in the socket 10.

The swash plate 50 has a V-shaped cross section, and one end surface thereof is supported by the inner side surface of the front housing 120 via a thrust needle bearing 122. Further, the other end surface of the swash plate 20 is inclined with respect to the rotation main shaft 101 and is in contact with the end surface of the oscillating plate 60 via the thrust needle bearing 131. A peripheral portion of the other end surface of the oscillating plate 60 has one end connected to the inside of the piston 112, and the other end of a piston rod for reciprocating the piston 112 in the cylinder is fixed. At the center of the other end surface of the swing plate, a swing gear 61 made of a bevel gear is provided and meshes with the fixed gear 1 via the spherical body 2.

The above is the same configuration as the conventional example.

The rotation preventing mechanism of the rotary compressor according to the embodiment of the present invention is different from the conventional example in that the fixed gear 1 and the spherical body 2 are integrally provided at one end of the socket 10.

That is, as shown in the partially enlarged cross-sectional view of the socket 10 of FIG. 2, the socket 10 has a fixed gear 1 and a spherical body 2 formed at the front end integrally with the front end thereof. In order to integrate the fixed gear 1 and the spherical body 2, there is a cylindrical portion 3 at the boundary between them.

To manufacture this socket 10, a bevel gear serving as the fixed gear 1 at a predetermined position and a part having a cylindrical portion at its tip are forged, and the tip position 3 from the fixed gear 1 is forged into a cylindrical shape. , It can be obtained by polishing the tip of the spherical surface. The portion between the spherical tip and the fixed gear 1 does not need to be ground, and can be left as it is forged.

As described above, since the socket 10, the spherical body 2 and the fixed gear 1 are integrated, the rocking plate 60 can be easily positioned only by adjusting the position of the socket 10.

In the embodiment of the present invention, the fixed gear and the spherical body are integrated, but the rocking gear and the spherical body that mesh with the fixed gear may be integrally provided. Of course, in this case, the main shaft and fixed gear must not be interlocked.

[0024]

[Effect of device]

 As described above, in the present invention, the cost can be reduced by reducing the number of parts. Further, according to the present invention, since the positioning is easy, it is possible to provide a rotary swash plate type compressor which requires no special technique for assembling and can improve the productivity.

[Brief description of drawings]

FIG. 1 is a sectional view showing a rotary swash plate type compressor according to an embodiment of the present invention.

FIG. 2 is an enlarged view of a tip portion of a socket of the rotary swash plate compressor in FIG.

FIG. 3 is a cross-sectional view showing an example of a conventional rotary swash plate compressor.

FIG. 4 is a cross-sectional view showing another example of a conventional rotary swash plate compressor.

[Explanation of symbols]

 1, 81, 81 'Fixed gear 2, 70, 70' Spherical body 3 Cylindrical part 10, 80, 80 'Socket 50 Swash plate 51 Slope 60 Swing plate 61 Swing gear 72' Cylindrical part 82 'Hole 100 Cylindrical casing 101 rotating main shaft 103 one end 104 radial bearing 105 crank chamber 106 coil spring 110 cylinder block 111 cylinder 112 piston 113 rod 120 front housing 121 protrusion 122, 131 thrust needle bearing 130 radial ball bearing 140 cylinder head 150 electromagnetic clutch 151 hub part

Claims (3)

[Scope of utility model registration request] 1. A rocking gear provided on a rocking plate for rocking motion of a rotary swash plate compressor, a fixed gear meshing with the rocking gear, and interposed between the rocking gear and the fixed gear. In a rotation prevention mechanism for preventing rotation of the oscillating plate by continuously connecting the spherical body with the spherical body, the spherical body is integrated with only one of the oscillating gear and the fixed gear. A rotation blocking mechanism. 2. A rotary swash plate compressor comprising the rotation blocking mechanism according to claim 1. 3. The rotary swash plate compressor according to claim 2, wherein the spherical body is integrated with the fixed gear, and the spherical body and the fixed gear each have a hole extending in a direction of the main shaft. A rotary swash plate compressor, wherein the main shaft is provided in the hole.