JPH02110570U - - Google Patents
Info
- Publication number
- JPH02110570U JPH02110570U JP1971989U JP1971989U JPH02110570U JP H02110570 U JPH02110570 U JP H02110570U JP 1971989 U JP1971989 U JP 1971989U JP 1971989 U JP1971989 U JP 1971989U JP H02110570 U JPH02110570 U JP H02110570U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pressure
- state
- brake
- flow rate
- brake cylinder
- 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
- 239000007788 liquid Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 3
- 230000010349 pulsation Effects 0.000 claims 2
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Valves And Accessory Devices For Braking Systems (AREA)
Description
第１図は本考案の一実施例である液圧ブレーキ
装置を示す回路図であり、第２図はその等価回路
図である。第３図は従来装置の流量切換弁の作動
特性を示す説明図であり、第４図は本実施例装置
の液圧制御の効果を従来装置と比較して示す説明
図である。第５図は本考案の別の実施例である液
圧ブレーキ装置を示す回路図である。
１０：マスタシリンダ、１２：ブレーキペダル
、１６：ブレーキシリンダ、１８，２０，２２：
液通路、２４：電磁液圧制御弁、４０：流量制御
装置、４２：流量切換弁、４４：開閉弁、４６：
チエツク弁、６４：パイロツト通路、７０：絞り
通路、１２０：可変絞り弁、１５４：開閉弁。
FIG. 1 is a circuit diagram showing a hydraulic brake device which is an embodiment of the present invention, and FIG. 2 is an equivalent circuit diagram thereof. FIG. 3 is an explanatory diagram showing the operating characteristics of the flow rate switching valve of the conventional device, and FIG. 4 is an explanatory diagram showing the effect of hydraulic pressure control of the device of this embodiment in comparison with the conventional device. FIG. 5 is a circuit diagram showing a hydraulic brake device according to another embodiment of the present invention. 10: Master cylinder, 12: Brake pedal, 16: Brake cylinder, 18, 20, 22:
Liquid passage, 24: Electromagnetic hydraulic pressure control valve, 40: Flow rate control device, 42: Flow rate switching valve, 44: Opening/closing valve, 46:
Check valve, 64: Pilot passage, 70: Throttle passage, 120: Variable throttle valve, 154: Open/close valve.
Claims (1)
せるマスタシリンダと、 そのマスタシリンダから主液通路を経て伝達さ
れる液圧によつて作動するブレーキシリンダと、 前記主液通路に設けられ、前記ブレーキシリン
ダを前記マスタシリンダに連通させる増圧許容状
態と、リザーバに連通させる減圧許容状態とに切
り換わつてブレーキシリンダの液圧を制御する電
磁液圧制御装置と、 その電磁液圧制御装置と直列に前記主液通路に
設けられ、主液通路を開放状態に保つ第一状態と
、主液通路を絞り効果を与えつつ連通状態に保つ
第二状態とに切り換わつて前記ブレーキシリンダ
へのブレーキ液の流量を大小に切り換える流量切
換装置と を含む液圧ブレーキ装置において、 前記電磁液圧制御装置が前記減圧許容状態に切
り換わつてその電磁液圧制御装置より前記ブレー
キシリンダ側の液圧が前記マスタシリンダ側の液
圧より設定値以上低くなつた状態で、前記流量切
換装置が前記第二状態に切り換わることを許容し
、その後は、前記電磁液圧制御装置が前記増圧許
容状態に切り換わつた場合に前記ブレーキシリン
ダ側に生ずる液圧の脈動のうちで最も大きい脈動
が生じた場合でも、前記流量切換装置が前記第一
状態に復帰することを阻止する流量切換装置制御
装置を設けたことを特徴とする液圧ブレーキ装置
。[Scope of Claim for Utility Model Registration] A master cylinder that generates hydraulic pressure in response to the operation of a brake operating member; a brake cylinder that is operated by hydraulic pressure transmitted from the master cylinder through a main fluid passage; an electromagnetic hydraulic pressure control device that is provided in a fluid passage and controls the hydraulic pressure of the brake cylinder by switching between a pressure increase permitting state in which the brake cylinder is communicated with the master cylinder and a pressure decrease permitting state in which the brake cylinder is communicated with a reservoir; It is installed in the main liquid passage in series with the electromagnetic hydraulic pressure control device, and is switched between a first state in which the main liquid passage is kept open and a second state in which the main liquid passage is kept in communication while giving a throttling effect. and a flow rate switching device for switching the flow rate of brake fluid to the brake cylinder between large and small amounts, wherein the electromagnetic hydraulic pressure control device switches to the pressure reduction allowing state and the electromagnetic hydraulic pressure control device When the hydraulic pressure on the brake cylinder side becomes lower than the hydraulic pressure on the master cylinder side by more than a set value, the flow rate switching device allows the switching to the second state, and thereafter, the electromagnetic hydraulic pressure control is performed. Even if the largest pulsation of the hydraulic pressure pulsations occurring on the brake cylinder side occurs when the device switches to the pressure increase permitting state, the flow rate switching device returns to the first state. A hydraulic brake device characterized in that it is provided with a flow rate switching device control device for blocking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1971989U JPH02110570U (en) | 1989-02-22 | 1989-02-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1971989U JPH02110570U (en) | 1989-02-22 | 1989-02-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02110570U true JPH02110570U (en) | 1990-09-04 |
Family
ID=31235475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1971989U Pending JPH02110570U (en) | 1989-02-22 | 1989-02-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02110570U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010000924A (en) * | 2008-06-20 | 2010-01-07 | Komatsu Utility Co Ltd | Braking device for working vehicle |
-
1989
- 1989-02-22 JP JP1971989U patent/JPH02110570U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010000924A (en) * | 2008-06-20 | 2010-01-07 | Komatsu Utility Co Ltd | Braking device for working vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH02110570U (en) | ||
| JPS62278301A (en) | Variably regenerating circuit | |
| JPS5825131Y2 (en) | Fluid sequential operation circuit device | |
| JP2630775B2 (en) | Priority operation control device for high load actuator | |
| JP2545413Y2 (en) | Anti-lock brake device | |
| JPH024241Y2 (en) | ||
| JP3415512B2 (en) | Valve device | |
| JPS6128529Y2 (en) | ||
| JPS6126691Y2 (en) | ||
| JPH0251701U (en) | ||
| JPS6140961Y2 (en) | ||
| JPH0645042Y2 (en) | Control valve | |
| JP3580918B2 (en) | Pilot check valve | |
| JPH059521Y2 (en) | ||
| JPS6114646Y2 (en) | ||
| JPH059522Y2 (en) | ||
| JPS60191704U (en) | hydraulic system | |
| JPH0187302U (en) | ||
| JPS61204002U (en) | ||
| JPS6119838B2 (en) | ||
| JPH0444502U (en) | ||
| JPH0433046B2 (en) | ||
| JPH0433052B2 (en) | ||
| JPH0291201U (en) | ||
| JPS6427504U (en) |