JPS60164413U

JPS60164413U - Spring characteristic control device for suspension shock absorbers

Info

Publication number: JPS60164413U
Application number: JP5245884U
Authority: JP
Inventors: 田中　龍司
Original assignee: トヨタ自動車株式会社
Priority date: 1984-04-10
Filing date: 1984-04-10
Publication date: 1985-10-31

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 drawings]

第１図は本考案によるばね特性制御装置を組込まれたダ
ブルウィシュボーン型フロントサスペンションを示す縦
断面図、第２図は第１図に示されたばね特性制御装置の
シリンダーピストン装置を示す拡大縦断面図、第３図は
補助スプリング及びストッパーを一部破断して示す拡大
部分図、第４図は電磁切換弁の励磁、非励磁状態とばね
特性との関係を示す解図、第５図及び第６図はそれぞれ
本考案によるばね特性制御装置の補助スプリング及びス
トッパの他の一つの実施例を示す拡大部分断面図、第７
図は本考案によるばね特性制御装置の液圧回路の他の一
つの実施例を示す部分図である。１・・・ロアコントロールアーム、２・・・クロスメン
バ、３・・・枢軸、４・・・アッパコントロールアーム
、６・・・ボールジヨイント、７・・・車輪、８・・・
ナックル、９，１０・・・バウンドストッパ、１１・・
・ロアシート、１２・・・アッパシート、１３−９・・
圧縮コイルスプリング、１４・・・ンリンダーピス］・
ン装置、１５．１６・・・端壁、１７・・・シリスダ、
１８・・・軸線、１９．２０・・・シリンダ室、２１・
・・ピストン、２２・・・ロッド部、２３・・・取付ア
イ、２４．２５・・・０リング、２６・・・キャップ部
材、２７・・・オイルシール、２８・・・孔、２９・・
・ロンド、３０．３１・・・ナツト、３２．３３・・・
スプリングシート、３４・・・カラー、３５．３６・・
・圧縮コイルスプリング、３５’、３６’・・・補助ス
プリング、３７．３８・・・ポート、３９．４０・・・
電磁切換弁、４１．４２・・・導管、４３・・・オリフ
ィス、４４・・・導管、４５・・・アキュムレータ、４
５ａ・・・ダイヤフラム、４６．４７・・・導管、４Ｂ
、４９・・・逆止弁、５θ、５１・・・スプリングレー
ト変更スペーサ、５０’、５１’・・・ストッパ、５２
，５２’・・・上壁、５３，５３’・・・下壁、５４．
５４’、５５．５５’・・・側壁、５６．５６’・・・
室□空間、５７，５７’、５８．５８’・・・溝、５９
．５９’・・・パイプ、６０．６１・・・導管、６２・
・・液体室、６３・・・気体室、６４・・・電子制御装
置、６５・・・バウンドセンサ、６６・・・リバウンド
センサ、６７・・・調整スイッチ、６８．６８’・・・
隔壁、６９．６９’・・・連通孔、７０・・・ストッパ
、７１，７２・・・端壁、７３−・・シリンダ、７４．
７５・・・シリンダ室、７６・・・ピストン、７７．７
８・・・環状溝、７９．８０・・・Ｃ字形リング、８１
．８２・・・電磁開閉弁、８３・・・導管、′８４・・
・オリフィス。、、−ｆ１８　　’ ３６’　　− ろ＼、３ぢ　　　第６図〜　　　、Fig. 1 is a vertical sectional view showing a double wishbone type front suspension incorporating a spring characteristic control device according to the present invention, and Fig. 2 is an enlarged longitudinal sectional view showing a cylinder piston device of the spring characteristic control device shown in Fig. 1. Figure 3 is an enlarged partial view showing the auxiliary spring and stopper partially cut away, Figure 4 is an illustration showing the relationship between the energized and de-energized states of the electromagnetic switching valve and the spring characteristics, and Figures 5 and 3 are 6 is an enlarged partial sectional view showing another embodiment of the auxiliary spring and stopper of the spring characteristic control device according to the present invention, and FIG.
The figure is a partial diagram showing another embodiment of the hydraulic circuit of the spring characteristic control device according to the present invention. DESCRIPTION OF SYMBOLS 1...Lower control arm, 2...Cross member, 3...Pivot, 4...Upper control arm, 6...Ball joint, 7...Wheel, 8...
Knuckle, 9, 10... Bound stopper, 11...
・Lower seat, 12...Upper seat, 13-9...
Compression coil spring, 14... cylinder piston]・
equipment, 15.16...end wall, 17...sirisu da,
18... Axis line, 19.20... Cylinder chamber, 21.
... Piston, 22 ... Rod part, 23 ... Mounting eye, 24.25 ... O-ring, 26 ... Cap member, 27 ... Oil seal, 28 ... Hole, 29 ...
・Rondo, 30.31...Natsuto, 32.33...
Spring seat, 34...Color, 35.36...
・Compression coil spring, 35', 36'...Auxiliary spring, 37.38...Port, 39.40...
Electromagnetic switching valve, 41.42... Conduit, 43... Orifice, 44... Conduit, 45... Accumulator, 4
5a...Diaphragm, 46.47...Conduit, 4B
, 49... Check valve, 5θ, 51... Spring rate changing spacer, 50', 51'... Stopper, 52
, 52'... Upper wall, 53, 53'... Lower wall, 54.
54', 55.55'... side wall, 56.56'...
Room □ Space, 57, 57', 58.58'...Groove, 59
．． 59'...Pipe, 60.61...Conduit, 62.
...Liquid chamber, 63...Gas chamber, 64...Electronic control unit, 65...Bound sensor, 66...Rebound sensor, 67...Adjustment switch, 68.68'...
Partition wall, 69.69'...Communication hole, 70...Stopper, 71, 72...End wall, 73-...Cylinder, 74.
75...Cylinder chamber, 76...Piston, 77.7
8... Annular groove, 79.80... C-shaped ring, 81
．． 82... Solenoid on-off valve, 83... Conduit, '84...
・Orifice. ,,-f18'36'-ro＼,3ぢ Figure 6~ ,

Claims

[Scope of utility model registration request]

a suspension spring that supports the weight of the vehicle and is elastically mounted between the suspension member and the vehicle body that displaces in response to wheel bounce or rebound; and a suspension spring that supports the vehicle weight when the wheel bounces or rebounds by more than a predetermined amount A spring characteristic control device for a suspension shock absorber having two auxiliary springs each exerting a spring action between a cylinder and a piston that cooperates with the cylinder to define two cylinder chambers. a cylinder piston device having: a first passage means for communicating and connecting the two cylinder chambers; a first restricting means for throttling fluid flowing through a part of the first passage means; a first valve device that selectively blocks communication of the first passage means when bound or rebound; the cylinder piston device is connected at one end to the suspension member and at the other end to the vehicle body. second and second spring seats are carried at positions spaced apart from each other on both sides of the vehicle, and the auxiliary spring is interposed between the first and second spring seats and the vehicle body. The second and second spring seats and the vehicle body have internally variable volume first and second chamber spaces, respectively, and the second and second spring seats and the vehicle body respectively have a first chamber space and a second chamber space whose volume is variable. Interposed are first and second stoppers for selectively preventing changes in the distance between the first and second stops.
and the second chamber space is communicatively connected to the third and second accumulators by second and third passage means having second and third throttle means and second and third valve devices therebetween, respectively. and the second and third valve devices are spring characteristic control devices for a suspension shock absorbing device configured to allow communication between the second and third passage means when the wheel bounces or rebounds by more than the predetermined amount. .