JPH0191085U

JPH0191085U -

Info

Publication number: JPH0191085U
Application number: JP18702687U
Authority: JP
Priority date: 1987-12-07
Filing date: 1987-12-07
Publication date: 1989-06-15

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化した可変容量圧縮機
の断面図、第２図は電磁石の消磁時における要部
断面図、第３図は同じく励磁時における要部断面
図、第４図及び第５図はそれぞれこの考案の第２
第３実施例を示す要部断面図である。１……シリンダブロツク、４……吸入室、５…
…吐出室、７……クランク室、８……駆動軸、１
０……シリンダボア、１１……ピストン、３１…
…揺動部材としての揺動斜板、５１……給気通路
、５２……抽気通路、５３……第一の開閉弁とし
ての電磁弁、５４……第二の開閉弁としてのスプ
ール弁、７１……スプール孔、７２……スプール
、７３……緩衝ばね、７４……スプール受け、７
７……復帰ばね、８０……緩衝材。 Figure 1 is a sectional view of a variable capacity compressor that embodies this idea, Figure 2 is a sectional view of the main part when the electromagnet is demagnetized, Figure 3 is a sectional view of the main part when the electromagnet is energized, and Figures 4 and 4 are Figure 5 is the second version of this idea.
FIG. 7 is a sectional view of main parts showing a third embodiment. 1... Cylinder block, 4... Suction chamber, 5...
...Discharge chamber, 7...Crank chamber, 8...Drive shaft, 1
0...Cylinder bore, 11...Piston, 31...
...Swinging swash plate as a swinging member, 51... Air supply passage, 52... Air bleed passage, 53... Solenoid valve as a first on-off valve, 54... Spool valve as a second on-off valve, 71...Spool hole, 72...Spool, 73...Buffer spring, 74...Spool receiver, 7
7...Return spring, 80...Buffer material.

Claims

[Claims for Utility Model Registration] 1. A crank chamber, a discharge chamber, and a suction chamber are connected to a cylinder block having a cylinder bore, and the crank chamber is configured to reciprocate within a predetermined angle as the drive shaft rotates. A rocking body is provided to give reciprocating motion to the piston in the cylinder bore, and an air supply passage is provided between the crank chamber and the discharge chamber for supplying gas in the discharge chamber into the crank chamber, and the air supply passage is opened and closed. In addition to providing a first on-off valve, a bleed passage for bleeding gas from the crank chamber into the suction chamber and a second on-off valve for opening and closing the bleed passage are provided between the crank chamber and the suction chamber. In a variable capacity compressor in which the rocking angle of the rocking body is changed depending on the pressure difference with the indoor pressure, and the piston stroke is changed so that the compression capacity can be controlled, the second on-off valve is connected to the bleed passage. a spool hole inserted into the spool hole and operated to open and close the bleed passage; one end of the spool receives gas pressure from the discharge chamber when the first on-off valve is opened; The spool is configured to be closed, and a buffer material made of resin is provided between the spool and the inner surface of the spool hole to buffer the closing action of the spool, and an elastic material made of the resin and the spool are provided. A variable capacity compressor with a return spring installed in between. 2. The variable displacement compressor according to claim 1, wherein the cushioning material made of resin is one of polyimide, polyimide amide, and PTFE. 3. The variable displacement compressor according to claim 1 or 2 of the utility model registration claim, in which the return spring is divided into two parts and a spool receiver is provided between the two springs.