JPH03107271U - - Google Patents
Info
- Publication number
- JPH03107271U JPH03107271U JP1550590U JP1550590U JPH03107271U JP H03107271 U JPH03107271 U JP H03107271U JP 1550590 U JP1550590 U JP 1550590U JP 1550590 U JP1550590 U JP 1550590U JP H03107271 U JPH03107271 U JP H03107271U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- power piston
- communication passage
- valve
- input rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005192 partition Methods 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000002123 temporal effect Effects 0.000 description 1
Landscapes
- Braking Systems And Boosters (AREA)
Description
第１図は本考案に従つた負圧式倍力装置の一実
施例を示す断面図、第２図は第１図に示した負圧
式倍力装置によつて得られる入出力特性の時間的
変化を示したグラフ、第３図は本考案に係わる負
圧式倍力装置の弁手段の他の実施例を示す要部断
面図である。
１０……ハウジング、２０……パワーピストン
、２１……ハブ部材、２１ｇ……弁座、２１ｈ…
…スリツト（絞り手段）、３０……バルブ機構、
３１……バルブプランジヤ、３１Ａ……前方プラ
ンジヤ、３１Ｃ……後方プランジヤ、４０……プ
ツシユロツド（入力ロツド）、７０……オペレー
シヨンロツド（出力ロツド）、９０……隔壁、９
１……プレート、９２……ダイアフラム、９３…
…連通路、９４……カツプシール（弁手段）、１
２１ｈ……スリツト、１９３……連通路、１９４
……チエツク弁（弁手段）、Ｒ１……定圧室、Ｒ
２……変圧室、Ｒ４……圧力室。
Fig. 1 is a sectional view showing an embodiment of the negative pressure booster according to the present invention, and Fig. 2 is a temporal change in input/output characteristics obtained by the negative pressure booster shown in Fig. 1. FIG. 3 is a sectional view of a main part showing another embodiment of the valve means of the negative pressure booster according to the present invention. 10...Housing, 20...Power piston, 21...Hub member, 21g...Valve seat, 21h...
...slit (throttling means), 30...valve mechanism,
31... Valve plunger, 31A... Front plunger, 31C... Rear plunger, 40... Push rod (input rod), 70... Operation rod (output rod), 90... Bulkhead, 9
1...Plate, 92...Diaphragm, 93...
...Communication path, 94...Cup seal (valve means), 1
21h...Slit, 193...Communication path, 194
...Check valve (valve means), R1 ... Constant pressure chamber, R
2...Pressure chamber, R4...Pressure chamber.
Claims (1)
も１組の変圧室と定圧室に区画され、また前記パ
ワーピストン内に組み込まれ入力ロツドに連動す
るバルブ機構の作動により前記変圧室と定圧室間
の差圧が制御されて、前記入力ロツドに加わる操
作力が前記パワーピストンにより助勢されて出力
ロツドに伝わるようにした負圧式倍力装置におい
て、外周部が前記パワーピストンに気密的に固定
されると共に内周部が前記バルブ機構のバルブプ
ランジヤ又は前記出力ロツドに気密的に固定され
る隔壁を設け、該隔壁の前記定圧室側には前記定
圧室の圧力が常時付与されるようにすると共に前
記変圧室側には圧力側が形成されるようにし、該
圧力室と前記変圧室を連通路を通して連通させ、
該連通路に少なくとも前記入力ロツドの操作時に
は前記連通路内に形成される弁座に着座して前記
連通路を遮断可能であり前記入力ロツドの操作解
除時には前記連通路を開放する弁手段を設けると
共に前記弁座に前記弁手段の着座時に前記弁手段
とで絞りを形成し前記連通路を絞る絞り手段を設
けたことを特徴とする負圧式倍力装置。 The inside of the housing is divided into at least one set of a variable pressure chamber and a constant pressure chamber by a power piston, and the differential pressure between the variable pressure chamber and the constant pressure chamber is controlled by the operation of a valve mechanism incorporated in the power piston and interlocked with an input rod. In the negative pressure booster, in which the operating force applied to the input rod is assisted by the power piston and transmitted to the output rod, the outer peripheral part is hermetically fixed to the power piston, and the inner peripheral part is fixed to the power piston. A partition wall is airtightly fixed to the valve plunger or the output rod of the valve mechanism, and the pressure of the constant pressure chamber is always applied to the constant pressure chamber side of the partition wall, and the pressure is applied to the variable pressure chamber side of the partition wall. the pressure chamber and the variable pressure chamber communicate through a communication passage;
A valve means is provided in the communication passage, which is capable of closing the communication passage by seating on a valve seat formed in the communication passage at least when the input rod is operated, and opens the communication passage when the input rod is released. The negative pressure type booster is further provided with a throttle means which forms a throttle with the valve means and throttles the communication path when the valve means is seated on the valve seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1550590U JPH03107271U (en) | 1990-02-19 | 1990-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1550590U JPH03107271U (en) | 1990-02-19 | 1990-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03107271U true JPH03107271U (en) | 1991-11-05 |
Family
ID=31518808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1550590U Pending JPH03107271U (en) | 1990-02-19 | 1990-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03107271U (en) |
-
1990
- 1990-02-19 JP JP1550590U patent/JPH03107271U/ja active Pending
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