JPS6419089U

JPS6419089U -

Info

Publication number: JPS6419089U
Application number: JP11292087U
Authority: JP
Priority date: 1987-07-23
Filing date: 1987-07-23
Publication date: 1989-01-31

Description

[Brief explanation of the drawing]

第１図はこの考案によるスクロール圧縮機の一
実施例を示す主軸大径部の軸受部であり、ａ図は
平面図、ｂ図はａ図の−線における断面図、
第２図は従来のスクロール圧縮機の縦断面図、第
３図は他の従来技術を示すスクロール圧縮機の主
軸部及び軸受部の縦断面図である。１……固定スクロール、１ａ……渦巻突起、１
ｂ……台板部、２……揺動スクロール、２ａ……
渦巻突起、２ｂ……台板部、２ｃ……揺動軸部、
３……吸入口、４……吐出口、５……圧縮室、６
……主軸、６ａ……大径部、６ｂ……小径部、６
ｃ……偏心穴、６ｄ……給油穴、６ｅ，６ｆ……
ぬすみ部、６ｉ……第２の油穴、６ｊ……第２の
油溝、７……オイルキヤツプ、８……上部軸受枠
、９……下部軸受枠、１２……密閉容器、１５…
…潤滑油、１８……上部スラスト軸受、１９……
主軸受、２１……副軸受、２２……揺動軸受、２
２ｃ……第１の油溝、２２ｄ……第１の油穴。な
お、図中同一符号は同一又は相当部分を示す。 Fig. 1 shows a bearing part of the large diameter part of the main shaft showing an embodiment of the scroll compressor according to this invention, Fig. a is a plan view, Fig. b is a cross-sectional view taken along the - line of Fig. a,
FIG. 2 is a longitudinal sectional view of a conventional scroll compressor, and FIG. 3 is a longitudinal sectional view of a main shaft portion and a bearing portion of a scroll compressor showing another conventional technique. 1... Fixed scroll, 1a... Spiral protrusion, 1
b... Base plate part, 2... Oscillating scroll, 2a...
Spiral protrusion, 2b...base plate part, 2c...swing shaft part,
3...Suction port, 4...Discharge port, 5...Compression chamber, 6
...Main shaft, 6a...Large diameter section, 6b...Small diameter section, 6
c...Eccentric hole, 6d...Oil supply hole, 6e, 6f...
Recessed portion, 6i...Second oil hole, 6j...Second oil groove, 7...Oil cap, 8...Upper bearing frame, 9...Lower bearing frame, 12...Airtight container, 15...
...Lubricating oil, 18... Upper thrust bearing, 19...
Main bearing, 21... Sub bearing, 22... Swing bearing, 2
2c...first oil groove, 22d...first oil hole. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A fixed scroll having a spiral protrusion on one side of the base plate part and a spiral protrusion on one side of the base plate part are eccentrically combined with the spiral protrusion of the fixed scroll, and eccentrically revolve to form a compression chamber. , the compressed fluid is forced out from the discharge port, and the back surface of the base plate part has a swinging scroll with a swinging shaft protruding in the center, and an eccentric hole is provided in the large diameter part of the shaft end. A movable bearing is fitted and fixed, and the movable shaft of the movable scroll is inserted into the movable bearing to cause the movable scroll to oscillate, a main shaft that rotates the main shaft, a rotary drive means that rotates the main shaft, and a bearing frame that holds the movable scroll. A thrust bearing that supports the oscillating scroll from the back side, a main bearing that supports the large diameter portion of the main shaft, a sub bearing that supports the middle portion of the small diameter portion of the main shaft, and a lubricating oil at the bottom that accommodates each of the above components. and an oil pump means for pumping the lubricating oil at the bottom of the container to an eccentric oil supply hole provided at the lower end of the main shaft and penetrating from the bottom surface of the eccentric hole of the main shaft to the lower end. In the scroll compressor, the rocking bearing has a flexible structure in which the outer circumferential part is supported by the eccentric hole at the center in the axial direction, and gaps are provided on the upper and lower sides of the back surface by hollow parts. The rocking bearing has a first oil groove in the axial direction on the inner circumference at a position opposite to the load, and a first oil hole in the radial direction that communicates from the upper part of the oil groove to the upper recessed part. and a second oil groove in the axial direction located on the eccentric side of the eccentric hole in the outer circumferential part and closed at the bottom and open at the top, in the large diameter part of the main shaft, and the upper hollow part. A scroll compressor characterized in that a second oil hole in the radial direction is provided which communicates with the second oil groove.