JPH03123739U

JPH03123739U -

Info

Publication number: JPH03123739U
Application number: JP3393490U
Authority: JP
Priority date: 1990-03-30
Filing date: 1990-03-30
Publication date: 1991-12-16
Anticipated expiration: 2005-03-30
Also published as: JP2505266Y2

Description

[Brief explanation of drawings]

第１図は、この考案に係る車両用シートのエア
ーサスペンシヨンの概略斜視図、第２図は、第１
図の線−に沿つたエアーサスペンシヨンの概
略断面図、第３図は、シートのニユートラル位置
での切換手段、切換制御弁の関係を示す、エアー
サスペンシヨンの部分正面図、第４図Ａは、自動
調整のもとで、シートがニユートラル位置にある
場合での空気供給源、空気ばね管の接続図、第４
図Ｂ，Ｃは、自動調整の給気時および排気時での
空気供給源、空気ばね間の各接続図、第５図は、
空気供給源、空気ばね間の接続を概略的に示す模
式図、第６図Ａ，Ｂは、手動調整の給気時および
排気時での空気供給源、空気ばね間の各接続図で
ある。１０……車両用シートのエアーサスペンシヨン
、１１……シート、１２，１４……上枠、下枠、
１６，１８……リンク、２０，２１……リンクの
枢支ピン、３４……空気ばね、３６，３８……ブ
ラケツト、４０……切換制御弁、４０ａ……制御
弁本体、４２，４４，４６……切換制御弁の流入
口（ＩＮ）、流出口（ＯＵＴ）、排出口（ＥＴＨ
）、５０，５２……切換制御弁の供給ピン、排気
ピン、５４……切換手段（カム）、５６，５７…
…カム面、６０……操作ピン、６２……挿通孔、
６５……アジヤストスクリユー、６６……シヨツ
クアブゾーバー、６８，６９……ブラケツト、７
０……手動自動切換弁、７０ａ……切換スイツチ
、７２，７４……手動自動切換弁の流入口（ＩＮ
），流入口（ＯＵＴ）、８０……手動調整弁、８
０ａ……手動調整弁の切換スイツチ、８２，８４
，８６……手動調整弁の流入口（ＩＮ）、流出口
（ＯＵＴ）、排出口（ＥＴＨ）、８８……空気供
給源（コンプレツサー）、９０，９２……導管、
９３……主流路、９４，９６……３方継手、９７
……導管（バイパス）。 FIG. 1 is a schematic perspective view of the air suspension for a vehicle seat according to this invention, and FIG.
3 is a schematic cross-sectional view of the air suspension taken along the line - in the figure; FIG. 3 is a partial front view of the air suspension showing the relationship between the switching means and the switching control valve when the seat is in the neutral position; FIG. , connection diagram of the air supply source and air spring pipe when the seat is in the neutral position under automatic adjustment, 4th
Figures B and C are connection diagrams between the air supply source and air spring during automatic adjustment air supply and exhaust, and Figure 5 is:
FIGS. 6A and 6B are schematic diagrams schematically showing the connection between the air supply source and the air spring, and are each a connection diagram between the air supply source and the air spring during air supply and exhaust during manual adjustment. 10... Air suspension for vehicle seat, 11... Seat, 12, 14... Upper frame, lower frame,
16, 18... Link, 20, 21... Link pivot pin, 34... Air spring, 36, 38... Bracket, 40... Switching control valve, 40a... Control valve body, 42, 44, 46 ...The inlet (IN), outlet (OUT), and outlet (ETH) of the switching control valve
), 50, 52...Switching control valve supply pin, exhaust pin, 54...Switching means (cam), 56, 57...
...cam surface, 60 ... operation pin, 62 ... insertion hole,
65... Adjustable screw, 66... Shock absorber, 68, 69... Bracket, 7
0...Manual automatic switching valve, 70a...Switching switch, 72, 74...Manual automatic switching valve inlet (IN
), inlet (OUT), 80...manual adjustment valve, 8
0a... Manual adjustment valve changeover switch, 82, 84
, 86... Inlet (IN), outlet (OUT), outlet (ETH) of manual adjustment valve, 88... Air supply source (compressor), 90, 92... Conduit,
93... Main flow path, 94, 96... Three-way joint, 97
... Conduit (bypass).

Claims

[Scope of Claim for Utility Model Registration] (1) An upper frame on which vehicle seats are stacked is supported by a lower frame via a telescopic link, an air spring is provided between the upper frame and the lower frame, and a switching control valve is installed. The switching control valve is placed between the air supply source and the air spring, and the link expands and contracts to switch the switching control valve, supplying and exhausting compressed air from the air supply source to the air spring to create a suspension force that corresponds to the weight of the occupant. In an air suspension for a vehicle seat that maintains the air pressure, the air supply source is connected to the inlet of the switching control valve via a first three-way joint, and the air spring is connected to the outlet of the switching control valve via a manual automatic switching valve. A second three-way joint is provided between the air spring and the manual automatic switching valve, a bypass is formed by connecting the first and second three-way joints, and a manual adjustment valve is provided on the bypass. Air suspension for vehicle seats is a feature. (2) The upper frame on which vehicle seats are stacked is supported by the lower frame via a telescopic link, an air spring is installed between the upper frame and the lower frame, and a switching control valve is connected between the air supply source and the air spring. This is a vehicle seat system that maintains a suspension force that corresponds to the weight of the occupant by switching the switching control valve by expanding and contracting the link, supplying and exhausting compressed air from the air supply source to the air spring. In an air suspension, a switching control valve and a manual automatic switching valve are installed in the main flow path from the air supply source to the air spring, and three-way valves are installed between the air supply source, the switching control valve, the manual automatic switching valve, and the air spring. An air suspension for a vehicle seat, characterized in that a joint is provided and a manual adjustment valve is provided in a bypass connecting these three-way joints. (3) The air suspension for a vehicle seat according to claim 1 or 2, wherein the manual automatic switching valve is a 2-port, 2-position self-holding valve, and the manual adjustment valve is a 3-port, 3-position valve.