JPS6387108U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例に係る車高調整装置の
回路図、第２図は開閉弁の断面図、第３図は従来
の車高調整装置の回路図である。 ２ａ…タンク、５…バイパス、５ａ…減衰力発
生用のバルブ、７…シリンダ、８…ピストン、９
…ピストンロツド、１０…ベースバルブ、１２…
第２の回路、２０…油圧源、２７…切換弁、３８
…圧力開放弁、Ａ…第１の油室、Ｂ…第２の油室
、Ｃ…リザーバ室。 FIG. 1 is a circuit diagram of a vehicle height adjustment device according to an embodiment of the present invention, FIG. 2 is a sectional view of an on-off valve, and FIG. 3 is a circuit diagram of a conventional vehicle height adjustment device. 2a...Tank, 5...Bypass, 5a...Valve for generating damping force, 7...Cylinder, 8...Piston, 9
...Piston rod, 10...Base valve, 12...
Second circuit, 20... Hydraulic source, 27... Switching valve, 38
...Pressure release valve, A...first oil chamber, B...second oil chamber, C...reservoir chamber.

Claims (1)

【実用新案登録請求の範囲】 (1) シリンダ内にピストンを介してピストンロ
ツドが移動自在に挿入され、ピストンはピストン
ロツド側の第１の油室とピストン側の第２の油室
を区画し、シリンダの外側にはリザーバ室が設け
られ、第２の油室はベースバルブを介してリザー
バ室と接続し、第１の油室は切換弁を介して油圧
源又は第２の油室に接続したバイパスと選択的に
連通又は遮断され、バイパス中には伸側減衰力発
生用のバルブが設けられている車高調整装置に於
てリザーバ室は回路を介してタンクと接続され、
この回路中にリザーバ室の内圧によつて開閉され
る圧力開放弁を開閉自在に設けたことを特徴とす
る車高調整装置。 (2) シリンダの外側にアウターチユーブが設け
られ、シリンダとアウターチユーブ間にリザーバ
室を区画し、アウターチユーブにバルブボデイを
設け、このバルブボデイにリザーバ室とタンクを
接続する通路を設け、この通路中にスプリングで
閉じ方向に付勢されたボール弁からなる圧力開放
弁を開閉自在に設けた実用新案登録請求の範囲第
１項記載の車高調整装置。[Claims for Utility Model Registration] (1) A piston rod is movably inserted into the cylinder via a piston, and the piston partitions a first oil chamber on the piston rod side and a second oil chamber on the piston side. A reservoir chamber is provided on the outside of the , the second oil chamber is connected to the reservoir chamber via a base valve, and the first oil chamber is connected to a hydraulic power source or a bypass connected to the second oil chamber via a switching valve. In the vehicle height adjustment device, the reservoir chamber is connected to the tank via a circuit, and a valve for generating a rebound damping force is provided during the bypass.
A vehicle height adjusting device characterized in that a pressure release valve which is opened and closed by the internal pressure of a reservoir chamber is provided in the circuit so as to be openable and closable. (2) An outer tube is provided on the outside of the cylinder, a reservoir chamber is partitioned between the cylinder and the outer tube, a valve body is provided in the outer tube, a passage is provided in this valve body to connect the reservoir chamber and the tank, and a passage is provided in this passage to connect the reservoir chamber and the tank. The vehicle height adjustment device according to claim 1, which is a registered utility model, and includes a pressure release valve that is a ball valve that is biased in the closing direction by a spring and can be opened and closed.