JPS62135885U

JPS62135885U -

Info

Publication number: JPS62135885U
Application number: JP2415386U
Authority: JP
Priority date: 1986-02-21
Filing date: 1986-02-21
Publication date: 1987-08-26

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例による逆転防止装
置を備えた多気筒回転式圧縮機の縦断側面図、第
２図はその逆転防止装置部分の分解側面図、第３
図は作用を説明する要部拡大側面図、第４図は従
来の多気筒回転式圧縮機の縦断側面図、第５図は
第４図の―断面図である。１は電動要素、２はクランク軸、３は圧縮要素
、５ａ，５ｂはローリングピストン、６は仕切板
、７ａ，７ｂはシリンダ、８ａは上軸受、８ｂは
下軸受、９は下軸受スラスト面、２０はクランク
軸逆転防止装置、２１はクランク軸のスラスト面
、２２は凹部、２３は凹部底面、２７は係合ピン
、２７ａは係合ピンの先端部。なお、図中同一符
号は、同一又は相当部分を示す。 FIG. 1 is a vertical side view of a multi-cylinder rotary compressor equipped with a reverse rotation prevention device according to an embodiment of the invention, FIG. 2 is an exploded side view of the reverse rotation prevention device portion, and FIG.
The figure is an enlarged side view of a main part to explain the operation, FIG. 4 is a vertical side view of a conventional multi-cylinder rotary compressor, and FIG. 5 is a cross-sectional view of FIG. 4. 1 is an electric element, 2 is a crankshaft, 3 is a compression element, 5a, 5b are rolling pistons, 6 is a partition plate, 7a, 7b are cylinders, 8a is an upper bearing, 8b is a lower bearing, 9 is a lower bearing thrust surface, 20 is a crankshaft reverse rotation prevention device, 21 is a thrust surface of the crankshaft, 22 is a recess, 23 is a bottom surface of the recess, 27 is an engagement pin, and 27a is a tip of the engagement pin. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of Claim for Utility Model Registration] (1) Upper and lower bearings that respectively close the upper and lower sides of multiple cylinders arranged in parallel via a partition plate, and a rolling piston in the cylinder that is supported through these bearings. In a multi-cylinder rotary compressor having a crankshaft that transmits rotational force, there is provided a recess formed in one surface between the thrust surface of the crankshaft and the thrust surface of a lower bearing that supports the crankshaft, and a recess formed in this recess. A multi-cylinder rotary compressor characterized in that it is equipped with a crankshaft reversal prevention device comprising an engagement pin formed to be retractable from the other side of the compressor. (2) The multi-cylinder rotary compressor according to claim 1, wherein the bottom surface of the recess is inclined with respect to the thrust surface. (3) The multi-cylinder rotary compressor according to claim 1, wherein the tip of the engagement pin has a curvature.