JPS6212469A - Power steering device - Google Patents
Power steering deviceInfo
- Publication number
- JPS6212469A JPS6212469A JP15174985A JP15174985A JPS6212469A JP S6212469 A JPS6212469 A JP S6212469A JP 15174985 A JP15174985 A JP 15174985A JP 15174985 A JP15174985 A JP 15174985A JP S6212469 A JPS6212469 A JP S6212469A
- Authority
- JP
- Japan
- Prior art keywords
- oil
- valve body
- back pressure
- pressure chamber
- control valve
- 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
Abstract
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は車両のパワーステアリング装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a power steering device for a vehicle.
(従来の技術)
高速時における操舵力を重くし、高速中に適切な路面抵
抗感覚を運転者に伝える車両のノくワーステアリング装
置として、車速センサ等を用(λた種々の方式のものが
提案されている。(Prior art) A vehicle speed sensor or the like is used as a vehicle steering device to increase the steering force at high speeds and convey an appropriate sense of road resistance to the driver at high speeds. Proposed.
(発明が解決しようとする問題点)
しかしながら従来の方式では何れも高速時におけるオイ
ルポンプの仕事量を減らしてオイルポンプの消費エネル
ギを削減することができなl、)不具合があった。(Problems to be Solved by the Invention) However, all of the conventional systems have a problem in that they cannot reduce the amount of work of the oil pump at high speeds and reduce the energy consumption of the oil pump.
本発明は前記事情に鑑み案出されたものであって、本発
明の目的とする処は、高速時におけるオー 烏
−山 曲 1 げ ふ I&dv−、
伽、 I ふ 表 へに易な構造にて高速走行
時の操縦安定性を維持できる車両のパワーステアリング
装置を提供するにある。The present invention has been devised in view of the above circumstances, and the object of the present invention is to
-Mountain Song 1 Gefu I & dv-,
An object of the present invention is to provide a power steering device for a vehicle that has a simple structure and can maintain steering stability during high-speed driving.
(問題点を解決するための手段)
本発明は前記目的を達成するため、パワーシリンダ(4
)とオイルポンプ(1)を接続する油路(7)。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a power cylinder (4
) and an oil path (7) that connects the oil pump (1).
(61)に流量制御弁(41)を介設し、前記流量制御
弁(41)を、ケーシング(42)に摺動自在に装入さ
れた弁体(43)と、パワーシリンダ(4)とオイルポ
ンプ(1)を接続し前記油路(7)、(81)の油圧に
より前記弁体(43)を該弁体(43)の摺動方向の一
方側に摺動させる油室(51)、(52)と、前記弁体
(43)を該弁体(43)の摺動方向の他方側に付勢す
る背圧室(54)と、前記弁体(43)の摺動方向の一
方側への摺動時前記油室(51)に連通ずるバイパス路
(62)とで構成し、前記バイパス路(62)をオイル
ポンプ(1)の吸込口(la)側に接続し、前記背圧室
(54)に高速時に開いて該背圧室(54)の油を逃が
す油路(82)を接続したことを特徴とする。(61) is provided with a flow control valve (41), and the flow control valve (41) is connected to a valve body (43) slidably inserted into a casing (42) and a power cylinder (4). An oil chamber (51) to which the oil pump (1) is connected and slides the valve body (43) to one side in the sliding direction of the valve body (43) by the oil pressure of the oil passages (7) and (81). , (52), a back pressure chamber (54) that urges the valve body (43) to the other side in the sliding direction of the valve body (43), and one side in the sliding direction of the valve body (43). a bypass passage (62) that communicates with the oil chamber (51) when sliding to the side; the bypass passage (62) is connected to the suction port (la) side of the oil pump (1); The pressure chamber (54) is characterized in that an oil passage (82) is connected to the pressure chamber (54), which opens at high speed to release oil from the back pressure chamber (54).
(作用)
高速時に油路(82)を介して背圧室(54)の油が逃
がされ、弁体(43)は該弁体(43)の摺動方向の他
方側へ摺動し、油室(51)の油はバイパス路(62)
を介してオイルポンプ(1)の吸込口(1a)に多量に
供給される。(Function) At high speed, oil in the back pressure chamber (54) is released through the oil passage (82), and the valve body (43) slides to the other side in the sliding direction of the valve body (43), The oil in the oil chamber (51) is in the bypass path (62)
A large amount of oil is supplied to the suction port (1a) of the oil pump (1) through the oil pump (1).
従って、パワーシリンダ(4)へ供給する圧油の圧力を
下げて高速時における操舵力を重くし、また多量の油を
吸込口(la)に供給することによりオイルポンプ(1
)の消費エネルギを削減できる。Therefore, by lowering the pressure of the pressure oil supplied to the power cylinder (4) to increase the steering force at high speeds, and by supplying a large amount of oil to the suction port (la), the oil pump (1
) can reduce energy consumption.
また、以上の作動を背圧室(54)から少量の油を逃が
すことにより行えるので、装置の構造を簡易化すること
ができる。Further, since the above operation can be performed by releasing a small amount of oil from the back pressure chamber (54), the structure of the device can be simplified.
(実施例)
以下、本発明の好適一実施例を添付図面に従って説明す
る。(Embodiment) A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
第1図は本発明に係るパワーステアリング装置の油圧回
路図、第2図は流量制御弁部分の油圧回路図を示す。FIG. 1 shows a hydraulic circuit diagram of a power steering device according to the present invention, and FIG. 2 shows a hydraulic circuit diagram of a flow control valve portion.
(1)はオイルポンプ、(2)はオイルタンク。(1) is the oil pump, (2) is the oil tank.
(3)はコントロールバルブ、(4)はパワーシリンダ
で、オイルポンプ(1)の吸込口(1a)とオイルタン
ク(2)は油路(6)で接続し、オイルポンプ(1)の
吐出口(1b)とコントロールバルブ(3)は油路(7
)で接続する。(3) is a control valve, (4) is a power cylinder, the suction port (1a) of the oil pump (1) and the oil tank (2) are connected by an oil path (6), and the discharge port of the oil pump (1) (1b) and the control valve (3) are connected to the oil passage (7).
) to connect.
パワーシリンダ(4)のピストン(11)で画成された
左右のシリンダ室(12)、(13)とコンロールバル
ブ(3)は油路(14)、(15)で接続し、パワーシ
リンダ(4)のピストンロッド(17)両端はタイロッ
°ド等を介して左右の操向輪に接続され、また、ピスト
ンロッド(17)にはラック(18)が形成されている
。The left and right cylinder chambers (12), (13) defined by the piston (11) of the power cylinder (4) and the control valve (3) are connected by oil passages (14), (15), and ), both ends of the piston rod (17) are connected to left and right steering wheels via tie rods, etc., and a rack (18) is formed on the piston rod (17).
(21)はステアリングホイールで、ステアリングホイ
ール(21)の操作にょリピニオン軸(22)がラック
(18)上を転動して作動弁(23)の弁体(24)を
摺動し、弁体(24)の両側に画成された油室(2B)
、 (27)は、コントロールバルブ(3)の弁体(
31)の両側に画成された油室、(32) 、(33)
に夫々油路(34)、 (35)を介して連通されてい
る。(21) is a steering wheel, and when operating the steering wheel (21), the pinion shaft (22) rolls on the rack (18) and slides on the valve body (24) of the operating valve (23). Oil chamber (2B) defined on both sides of (24)
, (27) is the valve body (
Oil chambers defined on both sides of (31), (32), (33)
are communicated with each other via oil passages (34) and (35), respectively.
而してステアリングホイール(21)の操作により弁体
(24)を摺動し、油室(2B) 、 (27)、 (
32) 、 (33)、−を敗IQAI /すζ)
を人か イ・・・・・i −ノ [−・自 −t・卦
コl^1の弁体(3りを摺動させ、油路(14)、(1
5)を介してオイルポンプ(1)の圧油を左右のシリン
ダ室(12)、(13)に給排してパワーアシストを行
い、図中(3B)はコントロールバルブ(3)1作動弁
(23)とオイルタンク(2)を接続する油路を示す。Then, the valve body (24) is slid by operating the steering wheel (21), and the oil chambers (2B), (27), (
32), (33), - defeat IQAI /suζ)
Is it a person? i...i -ノ [-・self -t・卦
Slide the valve body (3) of column 1 and install the oil passage (14), (1
Pressure oil from the oil pump (1) is supplied to and discharged from the left and right cylinder chambers (12) and (13) via the control valve (3) (5) to perform power assist. 23) and the oil tank (2) are shown.
(41)は流量制御弁で、流量制御弁(41)は前記オ
イルポンプ(1)とコントロールバルブ(3)を接続す
る油路(7)に介設する。(41) is a flow control valve, and the flow control valve (41) is interposed in the oil passage (7) connecting the oil pump (1) and the control valve (3).
前記流量制御弁(41)はケーシング(42)に摺動自
在に装入された弁体(43)を備え、弁体(43)の両
端面及び弁体(43)の胴部に形成した環状溝(45)
。The flow rate control valve (41) includes a valve body (43) slidably inserted into a casing (42), and has an annular ring formed on both end faces of the valve body (43) and the body of the valve body (43). Groove (45)
.
(46)により油室(51)、(52)、(53)、背
圧室(54)を画成する。(46) defines oil chambers (51), (52), (53) and a back pressure chamber (54).
前記弁体(43)の端面で画成された油室(51)と。and an oil chamber (51) defined by an end surface of the valve body (43).
一方の環状溝(45)で画成された油室(52)には、
オイルポンプ(1)の吐出口(lb)に連通ずる油路(
61)を開口(81a)、(61b) L、また、コン
トロールバルブ(3)ニ接続する油路(7) ’lt
[31口(7a) 、 (7b) する。In the oil chamber (52) defined by one annular groove (45),
The oil path (
61) to open (81a), (61b) L, and the oil passage (7) that connects to the control valve (3).
[31 (7a), (7b).
はオイルポンプ(1)の吸込口(1a)に接続するバイ
パス路(82)を開口(82a)する。opens (82a) the bypass passage (82) connected to the suction port (1a) of the oil pump (1).
前記弁体(43)の端面には前記開口(7a)の閉塞を
自在とした軸部(68)を突出形成し、背圧室(54)
に装入したコイルスプリング(67)により軸部(68
)をケーシング端面に当接させて開口(7a)を閉塞す
るように付勢し、油路(el)、C7)の圧力が所定値
以下の場合には、7JIJz図に示すように油室(51
)に対して開口(7a)、(Ei2a)を閉塞するよう
に構成する。A shaft portion (68) that can freely close the opening (7a) is formed protruding from the end face of the valve body (43), and a back pressure chamber (54) is formed.
The coil spring (67) inserted into the shaft part (68
) is brought into contact with the casing end face and urged to close the opening (7a), and if the pressure in the oil passage (el), C7) is below a predetermined value, the oil chamber ( 51
), the openings (7a) and (Ei2a) are closed.
前記油室(52)と背圧室(50は弁体(43)に形成
した通孔(73)を介して連通ずる。The oil chamber (52) and the back pressure chamber (50 communicate with each other through a through hole (73) formed in the valve body (43).
更に弁体(43)の内部には通孔(74) 、 (75
) 、 (7B)、スプリング(77)、鋼球(78)
を介して油室(53)と背圧室(54)間を連通、遮断
するリリーフ弁(79)を設ける。Furthermore, there are through holes (74) and (75) inside the valve body (43).
), (7B), spring (77), steel ball (78)
A relief valve (79) is provided to communicate and cut off communication between the oil chamber (53) and the back pressure chamber (54) via the oil chamber (53) and the back pressure chamber (54).
そして前記背圧室(54)とオイルタンク(2)を弁(
81)が介設された油路(82)で接続する。Then, the back pressure chamber (54) and the oil tank (2) are connected with a valve (
81) are connected through an oil passage (82) provided therebetween.
前記弁(81)は常時閉塞され、車速センサ等からの信
号により車速に応じて開くよう構成する。実施例ではミ
ッションのカウンタギヤ(83)を利用し、高速時に遠
心力によりビン(84)を作動し、ピストン(85)を
介して鋼球(8G)をスプリング(87)に抗して動か
し、油路(82)を開くように構成した。The valve (81) is configured to be closed at all times and opened depending on the vehicle speed based on a signal from a vehicle speed sensor or the like. In the embodiment, the counter gear (83) of the transmission is used to operate the bottle (84) by centrifugal force at high speed, and move the steel ball (8G) through the piston (85) against the spring (87). The oil passage (82) was configured to be open.
本実施例は前記のように構成したので油室(51)の圧
力が所定値以上となると、即ち油室(51)における弁
体(43)に作用する圧力が、背圧室(54)における
弁体(43)に作用する圧力及びコイルスプリング(6
1)の弾発力よりも大きくなると、弁体(43)は背圧
室(54)側に摺動し、開口(7a)、(E12a)が
油室(51)に臨み、油はバイパス路(82)を介して
オイルポンプ(1)の吸込口(1a)側に戻され、従っ
てコントロールバルブ(23)、パワーシリンダ(4)
へは常に一定圧力値の圧油が供給される。Since the present embodiment is configured as described above, when the pressure in the oil chamber (51) exceeds a predetermined value, that is, the pressure acting on the valve body (43) in the oil chamber (51) is transferred to the back pressure chamber (54). The pressure acting on the valve body (43) and the coil spring (6
When the elastic force of 1) becomes larger, the valve body (43) slides toward the back pressure chamber (54), the openings (7a) and (E12a) face the oil chamber (51), and the oil flows into the bypass path. (82) and is returned to the suction port (1a) side of the oil pump (1), and is therefore connected to the control valve (23) and the power cylinder (4).
Pressure oil at a constant pressure value is always supplied to the
そして車両高速時には弁(81)は開き、背圧室(50
の油は油路(82)を介してオイルタンク(2)へ戻さ
れるので、背圧室(54)の圧力は下がる。従って弁体
(43)は背圧室(54)側に摺動し、開口(Ei2a
) 、バイパス路(62)を介して油室(51)から多
量の油がオイルポンプ(1)の吸込口(Ia)に供給さ
れ、パワーシリンダ(4)へ供給される圧油の圧力を下
げて高速時における操舵力を重くすると共に、多量の油
をオイルポンプ(1)の吸込口(1a)に供給すること
により高速時におけるオイルポンプ(1)の消費エネル
ギを削減することができる。When the vehicle is at high speed, the valve (81) opens and the back pressure chamber (50
Since the oil is returned to the oil tank (2) via the oil path (82), the pressure in the back pressure chamber (54) decreases. Therefore, the valve body (43) slides toward the back pressure chamber (54), and the opening (Ei2a
), a large amount of oil is supplied from the oil chamber (51) to the suction port (Ia) of the oil pump (1) via the bypass path (62), reducing the pressure of the pressure oil supplied to the power cylinder (4). By increasing the steering force at high speeds and supplying a large amount of oil to the suction port (1a) of the oil pump (1), the energy consumption of the oil pump (1) at high speeds can be reduced.
また、高速時における以上の作動を、流量制御弁(41
)の背圧室(50の油を少量逃がすことにより行えるの
で、装置の構造を簡易化することができる。In addition, the above operation at high speed is controlled by the flow control valve (41
This can be done by releasing a small amount of oil from the back pressure chamber (50), which simplifies the structure of the device.
次に、第3図を参照して流量制御弁(41)の第2実施
例を説明する。Next, a second embodiment of the flow control valve (41) will be described with reference to FIG.
第1実施例と同一部材、同一箇所には同一符号を付して
説明すると、第2実施例では流量制御弁(410)の弁
体(430)に第1実施例の如くリリーフ弁(79)及
び通孔(73)を設けず、背圧室(50とバイパス路(
62)を油路(101)で接続し、コイルスプリング(
102)と鋼球(103)からなるリリーフ弁(104
)を油路(101)に介設し、また、油室(52)と背
圧室(54)をオリフィス(111)を有する油路(1
12)で連通させたもので、流量制御弁(410)は第
1実施例(発明の効果)
以上の説明で明らかなように本発明によれば、高速時に
おけるオイルポンプの消費エネルギを削減でき、しかも
簡易な構造にて高速走行時の操縦安定性を維持できる。The same parts and parts as in the first embodiment are given the same reference numerals.In the second embodiment, the valve body (430) of the flow control valve (410) is replaced with a relief valve (79) as in the first embodiment. The back pressure chamber (50) and the bypass path (
62) with the oil passage (101), and connect the coil spring (
a relief valve (104) consisting of a steel ball (102) and a steel ball (103);
) is interposed in the oil passage (101), and the oil chamber (52) and the back pressure chamber (54) are provided in the oil passage (1) having an orifice (111).
12), and the flow rate control valve (410) of the first embodiment (effects of the invention) As is clear from the above explanation, according to the present invention, the energy consumption of the oil pump at high speeds can be reduced. Moreover, it is possible to maintain steering stability during high-speed driving with a simple structure.
第1図は本発明に係るパワーステアリング装置の油圧回
路図、第2図は流量制御弁部分の油圧回路図、第3図は
第2実施例の流量制御弁部分の油圧回路図である。
尚、図面中(1)はオイルポンプ、(2)はオイルタン
ク、(3)はコントロールバルブ、(4)はパワーシリ
ンダ、(7)、(81)、(82)は油路、(21)は
ステアリングホイール、(41)はyi量制御弁、(5
1)。
(52)、(53)は油室、 (54)は背圧室、(6
2)はバイパス路である。FIG. 1 is a hydraulic circuit diagram of a power steering device according to the present invention, FIG. 2 is a hydraulic circuit diagram of a flow control valve portion, and FIG. 3 is a hydraulic circuit diagram of a flow control valve portion of a second embodiment. In the drawing, (1) is the oil pump, (2) is the oil tank, (3) is the control valve, (4) is the power cylinder, (7), (81), and (82) are the oil passages, and (21) is the power cylinder. is the steering wheel, (41) is the yi quantity control valve, (5
1). (52), (53) are oil chambers, (54) are back pressure chambers, (6
2) is a bypass path.
Claims (1)
シリンダへオイルポンプの圧油を給排するようにしたパ
ワーステアリング装置において、前記パワーシリンダと
オイルポンプを接続する油路に流量制御弁を介設し、 前記流量制御弁を、 ケーシングに摺動自在に装入された弁体と、パワーシリ
ンダとオイルポンプを接続し前記油路の油圧により前記
弁体を該弁体の摺動方向の一方側に摺動させる油室と、 前記弁体を該弁体の摺動方向の他方側に付勢する背圧室
と、 前記弁体の摺動方向の一方側への摺動時前記油室に連通
するバイパス路とで構成し、 前記バイパス路をオイルポンプの吸込口側に接続し、 前記背圧室に高速時に開いて該背圧室の油を逃がす油路
を接続したことを特徴とするパワーステアリング装置。[Scope of Claims] A power steering device in which pressure oil from an oil pump is supplied to and discharged from a power cylinder by actuating a control valve by operating a handle, in which a flow control valve is provided in an oil passage connecting the power cylinder and the oil pump. The flow control valve is connected to a valve body slidably inserted into a casing, a power cylinder and an oil pump, and the valve body is moved in the sliding direction of the valve body by the hydraulic pressure of the oil passage. an oil chamber for sliding to one side; a back pressure chamber for urging the valve body to the other side in the sliding direction of the valve body; and a back pressure chamber for urging the valve body to the other side in the sliding direction of the valve body; and a bypass passage communicating with the chamber, the bypass passage being connected to the suction port side of the oil pump, and an oil passage that opens at high speed and releases oil in the back pressure chamber being connected to the back pressure chamber. Power steering device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15174985A JPS6212469A (en) | 1985-07-10 | 1985-07-10 | Power steering device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15174985A JPS6212469A (en) | 1985-07-10 | 1985-07-10 | Power steering device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6212469A true JPS6212469A (en) | 1987-01-21 |
Family
ID=15525442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15174985A Pending JPS6212469A (en) | 1985-07-10 | 1985-07-10 | Power steering device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6212469A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5815580B2 (en) * | 1972-11-14 | 1983-03-26 | デイナミ−ト ノ−ベル アクチエンゲゼルシヤフト | Strip composite as a protective layer for waterproofing layers applied to buildings |
-
1985
- 1985-07-10 JP JP15174985A patent/JPS6212469A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5815580B2 (en) * | 1972-11-14 | 1983-03-26 | デイナミ−ト ノ−ベル アクチエンゲゼルシヤフト | Strip composite as a protective layer for waterproofing layers applied to buildings |
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