JPS611728U

JPS611728U - Shock absorber for cab suspension

Info

Publication number: JPS611728U
Application number: JP8621884U
Authority: JP
Inventors: 明彦平野; 義昭橘; 文泰篠崎
Original assignee: 三菱自動車工業株式会社
Priority date: 1984-06-11
Filing date: 1984-06-11
Publication date: 1986-01-08

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来のショツクアブソーバと本考案実施例のシ
ョツクアブソーバの減衰力特性を示す説明図、第２図は
モデルに強制振動が加わっているときの説明図、第３図
はシャシーフレームからキャブへの振動伝達率を示す説
明図、第４図は本考案の第１実施例を示すショツクアブ
ソーバの断面概略図、第５図は第４図の部分拡大断面図
、第６図は第１実施例の第１バルブプレート１５、第１
スペーサプレート１６、第２バルブプレート１７の斜視
図、第７図は第６図における各プレートを重ね合せた状
態での断面図、第８図は第１実施例の第３バルブプレー
ト１９、第２スペーサプレート２０、第４バルブプレー
ト２１の斜視図、第９図はバルブリテーナ３３、第３バ
ルブプレート１９、″第２スペーサプレート２０、第４
バルブプレート２１、ホルダー３５を重ね合せた状態で
の断面図、第１０図〜第１２図は第７図における油の流
れの説明図、第１３図〜第１５図は第９図における油の
流れの説明図、第１６図は本考案の実施例における減衰
力特性を分解して表わした説明図、第１７図、第１８図
は実車加振テストでのキャブの振動状況を示した図面、
第１９図は本考案ののぞましいショツクアブソーバの減
衰力特性を示す説明図である。７・・・プレツシャチューブ、８・・・土部油室、９・
・・下部油室、１０・・・リザーバチューブ、１１・・
・リザーバ油室、１３・・・ピストンロンド、１５・・
・第１バルブプレート、１６・・・第１スペーサプレー
ト、１７・・・第２バルブプレート、１９・・・第３バ
ルブプレート、２０・・・第２スペーサプレート、２１
・・・第４バルブプレート、３３・・・バルブリテーナ
、３５−・・ホルダー、４２・・・ピストン、４５・・
・リリーフバルブプレート。Figure 1 is an explanatory diagram showing the damping force characteristics of the conventional shock absorber and the shock absorber of the embodiment of the present invention, Figure 2 is an explanatory diagram when forced vibration is applied to the model, and Figure 3 is from the chassis frame to the cab. 4 is a cross-sectional schematic diagram of a shock absorber showing the first embodiment of the present invention, FIG. 5 is a partially enlarged sectional view of FIG. 4, and FIG. 6 is a diagram showing the first embodiment of the shock absorber. Example first valve plate 15, first
A perspective view of the spacer plate 16 and the second valve plate 17, FIG. 7 is a cross-sectional view of the plates in FIG. A perspective view of the spacer plate 20, the fourth valve plate 21, and FIG.
A cross-sectional view of the valve plate 21 and holder 35 stacked together, FIGS. 10 to 12 are explanatory diagrams of the oil flow in FIG. 7, and FIGS. 13 to 15 are oil flows in FIG. 9. FIG. 16 is an explanatory diagram showing the decomposition of the damping force characteristics in the embodiment of the present invention, FIGS. 17 and 18 are diagrams showing the vibration state of the cab in an actual vehicle vibration test,
FIG. 19 is an explanatory diagram showing the damping force characteristics of the desirable shock absorber of the present invention. 7...Pretsusha tube, 8...Tsuchibe oil room, 9.
...Lower oil chamber, 10...Reservoir tube, 11...
・Reservoir oil chamber, 13...Piston rond, 15...
・First valve plate, 16... First spacer plate, 17... Second valve plate, 19... Third valve plate, 20... Second spacer plate, 21
... Fourth valve plate, 33... Valve retainer, 35-... Holder, 42... Piston, 45...
・Relief valve plate.

Claims

[Scope of utility model registration request]

In a cab suspension in which the cab is supported against the chassis frame through springs and shock absorbers placed on both left and right sides of the front and rear ends of the cab, the piston speed of the shock absorbers is 0.06 rTl/sec. A shock absorber for a cab suspension, characterized in that the damping force on the extension side is 30 Kgf or less, and the damping force on the compression side is 15 Kgf or less.