JPH0387882U

JPH0387882U -

Info

Publication number: JPH0387882U
Application number: JP14777989U
Authority: JP
Priority date: 1989-12-22
Filing date: 1989-12-22
Publication date: 1991-09-06
Anticipated expiration: 2004-12-22
Also published as: JP2509785Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例であるエアコンプレ
ツサを示す拡大部分縦断面図、第２図はコンプレ
ツサのアンロード時の状態を示す拡大部分縦断面
図、第３図はエアコンプレツサが使用されている
エアブレーキ装置を示す模式図である。２……エンジン（駆動装置）、３……エアクリ
ーナ、５……ブレーキ作動装置、６……リザーバ
、７……チエツク弁、８……アンローダ、９……
プレツシヤレギユレータ、１１……コンプレツサ
、１２……シリンダ本体、１３……シリンダ室、
１４……ピストン、１５……シリンダヘツド、１
６……吐出口、１７……吐出路、１８……吐出弁
、１９……吸入口、２０……吸入路、２１……吸
入弁、２２……弁筒、２３……弁室、２４……デ
イスクバルブ（弁体）、２５……バルブスプリン
グ、２６……弁座、２７……補助シリンダ室、２
８……プランジヤ、２９……プランジヤスプリン
グ、３０……ストツパ、３１……シリンダ、３２
……アンロード用ピストン、３３……ストツパリ
ング、３４……ストツパ部、３５……スプリング
、３６……制御ポート。 Fig. 1 is an enlarged longitudinal cross-sectional view of an air compressor which is an embodiment of the present invention, Fig. 2 is an enlarged longitudinal cross-sectional view of the air compressor showing the state when the compressor is unloaded, and Fig. 3 is an enlarged longitudinal cross-sectional view of the air compressor. FIG. 2 is a schematic diagram showing an air brake device in use. 2... Engine (drive device), 3... Air cleaner, 5... Brake actuation device, 6... Reservoir, 7... Check valve, 8... Unloader, 9...
Pressure regulator, 11... Compressor, 12... Cylinder body, 13... Cylinder chamber,
14... Piston, 15... Cylinder head, 1
6...Discharge port, 17...Discharge path, 18...Discharge valve, 19...Suction port, 20...Suction path, 21...Suction valve, 22...Valve cylinder, 23...Valve chamber, 24... ... Disc valve (valve body), 25 ... Valve spring, 26 ... Valve seat, 27 ... Auxiliary cylinder chamber, 2
8... Plunger, 29... Plunger spring, 30... Stopper, 31... Cylinder, 32
...Unloading piston, 33...Stopper ring, 34...Stopper portion, 35...Spring, 36...Control port.

Claims

[Scope of utility model registration request]

A cylinder chamber that introduces air through a suction passage connected to the intake system of the engine, a piston that is slidably fitted in the cylinder chamber and reciprocated by a drive device, and an intake that opens and closes the suction passage. a discharge valve that opens and closes a discharge passage communicating with the cylinder chamber; and an unloading piston that presses the suction valve and forcibly opens it when unloading when the pressure of the discharge passage output system exceeds a set value. In the air compressor, the suction valve includes a valve disposed within the movement area of the unloading piston to open and close the suction passage, a valve spring that biases the valve in the closing direction, and an unloading piston. An auxiliary cylinder chamber is arranged to face each other through the piston and the valve, and a plunger is fitted into the auxiliary cylinder chamber so as to be able to reciprocate and regulates the movement of the valve by maximizing the amount of lift when unloading the valve. and a plunger spring that biases the plunger toward the valve side.