JPS61150871A - Working oil circulating device - Google Patents

Working oil circulating device

Info

Publication number
JPS61150871A
JPS61150871A JP59270513A JP27051384A JPS61150871A JP S61150871 A JPS61150871 A JP S61150871A JP 59270513 A JP59270513 A JP 59270513A JP 27051384 A JP27051384 A JP 27051384A JP S61150871 A JPS61150871 A JP S61150871A
Authority
JP
Japan
Prior art keywords
pump chamber
oil
sub
hydraulic oil
pump
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
Application number
JP59270513A
Other languages
Japanese (ja)
Inventor
Shigetoshi Kumazaki
熊崎　重利
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Astemo Ltd
Original Assignee
Atsugi Motor Parts Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Atsugi Motor Parts Co Ltd filed Critical Atsugi Motor Parts Co Ltd
Priority to JP59270513A priority Critical patent/JPS61150871A/en
Publication of JPS61150871A publication Critical patent/JPS61150871A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
    • B62D5/30—Safety devices, e.g. alternate emergency power supply or transmission means to ensure steering upon failure of the primary steering means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D7/00—Steering linkage; Stub axles or their mountings
    • B62D7/06—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins
    • B62D7/14—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering
    • B62D7/15—Steering linkage; Stub axles or their mountings for individually-pivoted wheels, e.g. on king-pins the pivotal axes being situated in more than one plane transverse to the longitudinal centre line of the vehicle, e.g. all-wheel steering characterised by means varying the ratio between the steering angles of the steered wheels

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Power Steering Mechanism (AREA)

Abstract

PURPOSE:To prevent air from suction from an intake oil path by connecting one of two return oil paths for circulating working oil from an actuator to each intake hole of a vane pump without passing through a reservoir tank. CONSTITUTION:A main pump chamber 2 and a sub-pump chamber 3 are respectively connected to a front wheel steering power steering device 6 and a rear wheel steering power steering device 7 through oil supply paths 8, 9. The discharge side of said device 6 in connected to a reservoir 4 through a return oil path 10. Also, the discharge side of said device 7 is connected respectively to intake holes 14, 15 communicating respectively to a main pump chamber 2 and a sub-pump chamber 3 of a tandem type vane pump 1 through a return oil path 11. Thus, return oil from said device 7 is circulated directly to the respective intake holes 14, 15 of pump 1 so that sufficient flow of working oil is introduced into the main pump chamber 2 and sub-pump chamber 3. Thus, noises caused by cavitation can be prevented.

Description

【発明の詳細な説明】 産業上の利用分野 この発明は、タンデム型ベーンポンプを用いた作動油循
猿装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a hydraulic oil circulation device using a tandem vane pump.

従来の技術 従来のこの種の作動油循環！！−＃け、例えば第２ａ図
及び第２ｂ図に示すように、タンデム型ベーンポンプ１
に設けたメインポンプ室２及びサブポンプ室３内に、リ
ザーバタンク４がら吸入油路５？介して吸入されたｆ″
ｌｉｌｉ勧油れらメインポンプ室２及びサブポンプ室３
内で加圧し、この加圧された作動油ｆ２個の前輪操舵用
パワーステアリング装ｆｔ６及び後輪操舵用パワーステ
アリング装置７に供給油路８．９全それぞれ介して供給
してこねら各パワーステアリングＲ＃６，７’！ｒ−駆
動し、これらパワーステアリング装置６．７からそれぞ
れ排出される作動油を戻り油路１０　、１１　？介して
リザーバタンク４に還流させるようにしてい４゜発明が
解決しようとする問題点 ところで、従来の作動油＃葉装鮪にあっては、１本の吸
入油路５を用いて、リザーバタンク４からメインポンプ
室２及びサブポンプ＄３同へ作動油を供給している九め
に、内燃機関１２の回転が高速になるに従って、メイン
ポンプ室２やサブポンプ室３への吸入量が増大した場合
に、充分かつ円滑に作動油を導くことができず、そのた
めメインポンプ室２及びサブポンプ室３内でキャビテー
ションによる騒音が発生する場合が多々あった。Conventional technology This kind of hydraulic oil circulation is conventional! ! - For example, as shown in FIGS. 2a and 2b, a tandem vane pump 1
In the main pump chamber 2 and sub-pump chamber 3 provided in f'' inhaled through
main pump room 2 and sub pump room 3
The pressurized hydraulic oil f2 is supplied to the front wheel steering power steering device ft6 and the rear wheel steering power steering device 7 through the supply oil passages 8 and 9, respectively. #6,7'! r-drive, and the hydraulic oil discharged from these power steering devices 6, 7, respectively, is returned to the oil passages 10, 11? Problems to be Solved by the Invention By the way, in the conventional hydraulic oil #hakusou tuna, one suction oil passage 5 is used to flow back into the reservoir tank 4. Hydraulic oil is supplied from the main pump chamber 2 and sub pump $3 to the main pump chamber 2 and sub pump $3.Ninthly, as the rotation speed of the internal combustion engine 12 increases, when the amount of suction into the main pump chamber 2 and sub pump chamber 3 increases. , the hydraulic oil could not be guided sufficiently and smoothly, and as a result, noise due to cavitation was often generated within the main pump chamber 2 and the sub-pump chamber 3.

また、従来の作動油循環装置にあっては、各・くワース
テアリング装［６、７から排出される作動油が２本の戻
り油路１０　、１１　？介して小型容素のリザーバタン
ク４に同時にかつ多量に還流されるため、そのタンク４
内に貯留されている作動油の油面変動が大きくなり、そ
のとき、貯留されている作動油中に９気が混入し易くな
って、その空気を含んだｆ’ｌ：１１油がメインポンプ
室２及びサブポンプ室３内に吸入されて騒音を発生させ
るとい・う問題点があった。In addition, in the conventional hydraulic oil circulation system, the hydraulic oil discharged from each of the pump steering devices [6, 7] has two return oil passages 10, 11? Because a large amount of water is simultaneously returned to the small-capacity reservoir tank 4 through the tank 4,
Fluctuations in the oil level of the hydraulic oil stored in the pump become large, and at that time, air tends to get mixed into the hydraulic oil, and the air-containing f'l:11 oil is pumped into the main pump. There was a problem in that it was sucked into the chamber 2 and the sub-pump chamber 3 and generated noise.

問題点を解決するための手段 このような従来の問題点を解決するため、この発明は、
それぞれのアクチェエータから作動油を還流させる２本
の戻り油路のうちの一方の戻り油路を、リザーバタンク
を経由させることなく、前記メインポンプ室及びサブポ
ンプ室に連通ずる前記タンデム型ベーンポンプの各吸入
孔に接続した構成としである。Means for Solving the Problems In order to solve these conventional problems, this invention provides the following:
Each suction of the tandem vane pump communicates with the main pump chamber and the sub-pump chamber through one of the two return oil paths that recirculate hydraulic oil from each actuator without passing through a reservoir tank. This is a configuration connected to the hole.

作用 このような構成を有するこの発明は、２本のアクチュエ
ータからそれぞれ排出される作動油？、２本の戻り油路
のうち、一方の戻り油路を介して、リザーバタンクを経
ることなく、タンデム型ベーンポンプに設けた各吸入孔
側に導く一方、他方の戻り油路を介してリザーバタンク
に導くように代用する。Function: This invention having such a configuration is capable of reducing the amount of hydraulic oil discharged from each of the two actuators. Of the two return oil passages, one return oil passage leads to each suction hole provided in the tandem vane pump without passing through the reservoir tank, while the other return oil passage leads to the reservoir tank. Substitute it so that it leads to.

実施例 以下、この発明の実施例を図面に基づいて説明する。Example Embodiments of the present invention will be described below based on the drawings.

第１ａ図は、この発明に係る作動油循環装置の一実施例
管示す油圧回路図、第１ｂ図は第１ａ図に示す作動油循
環装置に使用されるタンデム型ベーンポンプを示す断面
図である。FIG. 1a is a hydraulic circuit diagram showing an embodiment of the hydraulic oil circulation system according to the present invention, and FIG. 1b is a sectional view showing a tandem vane pump used in the hydraulic oil circulation system shown in FIG. 1a.

ｇｌａ図及びＪＫｌｂ図に示すように、メインポンプ室
２及びサブポンプ室３から供給油路８，９を介して供給
される作動油により駆動される、アクチェエータたる鹸
輪操舵用パワーステアリング＃ｆｔ６及び後輪操舵用パ
ワーステアリング装置７の作動油の排出偵には、各１本
の戻り油路１０　、１１が接続されており、これら戻り
油路１０　、１１のうち、後輪操舵用パワーステアリン
グ装ｆ１７から排出されゐ作動油を導く一方の戻り油路
１１は、タンデム型ベーンポンプ１の前記メインポンプ
室２及びサブポンプ宇３に連通する各吸入孔１４　、１
５にｗ−続されており、また前翰操舵用パワーステアリ
ング装置６から排出される作動油を導く他方の戻り油路
１０は、リザーバタンク４に接続されている。このよう
な接Ｉｉ９．碑造を採るために、この実施例では、略Ｈ
字状の油路バイブ１６’ｆ−、ｌザーノ（タンク４及び
後輪操舵甲パワーステアリング装＃７とタンデム型ベー
ンポンプ１に設けた各吸入孔１４　、１５との間に配設
している。As shown in the gla figure and the JKlb figure, the power steering wheel steering #ft6 and rear actuator are driven by hydraulic oil supplied from the main pump chamber 2 and the sub-pump chamber 3 via supply oil passages 8 and 9. One return oil passage 10, 11 is connected to each of the hydraulic oil discharge ports of the power steering device 7 for wheel steering, and among these return oil passages 10, 11, the power steering device f17 for rear wheel steering One return oil passage 11 that guides the hydraulic oil discharged from the tandem vane pump 1 is connected to each suction hole 14 , 1 which communicates with the main pump chamber 2 and sub pump chamber 3 of the tandem vane pump 1 .
5, and the other return oil passage 10, which guides the hydraulic oil discharged from the power steering device 6 for front steering, is connected to the reservoir tank 4. Such a connection Ii9. In order to take the monument, in this example, approximately H
A letter-shaped oil passage vibrator 16' is arranged between the tank 4, the rear wheel steering shell power steering system #7, and the suction holes 14 and 15 provided in the tandem vane pump 1.

このような構成を有するこの４ｍ例によれば、後輪操舵
用パワーステアリング装置７から排出される作動油はリ
ザーバタンク４に還流されないで、一方の戻り油路１１
？介して、タンデム型ベーンポンプ１に設けた各吸入孔
１４　、１５に直接的に還流されるので、その吸入孔１
４　、１５からメインポンプ室２及びサブポンプ室３内
に、吸入油路５から吸入される咋靭油の油量にこの還流
油を加算して導くことができ、したがって、メインポン
プ室２及びサブポンプ室３内に充分な流貴の作動油を導
くととができる、そのため、それらポンプ室２．３内で
のキャビテーションによる騒音の発生を効果的に防止す
ることができる。According to this 4 m example having such a configuration, the hydraulic oil discharged from the power steering device 7 for steering the rear wheels is not returned to the reservoir tank 4, but flows through one return oil path 11.
? The flow is directly returned to the suction holes 14 and 15 provided in the tandem vane pump 1 through the suction hole 1.
4, 15 into the main pump chamber 2 and sub pump chamber 3, this reflux oil can be added to the amount of oil sucked from the suction oil path 5 and guided into the main pump chamber 2 and sub pump chamber 3. A sufficient flow of hydraulic oil can be introduced into the chamber 3, and therefore, generation of noise due to cavitation within the pump chambers 2.3 can be effectively prevented.

また、この実施例によれば、リザーバタンク４には、前
輪操舵用パワーステアリング装［６から排出されるｆ′
Ｉ：ＩＣＩ′Ｉ油のみしか他方の戻り油路１０を介して
還流されないので、小型容量のリザーバタンク４であっ
ても、その内部に貯留されている作動油の油面変動を極
力防止することができる。Further, according to this embodiment, the reservoir tank 4 contains f′ discharged from the power steering device [6] for steering the front wheels.
I: Only ICI'I oil is returned through the other return oil path 10, so even if the reservoir tank 4 has a small capacity, fluctuations in the oil level of the hydraulic oil stored therein are to be prevented as much as possible. I can do it.

なお、前記実権例では、アクチュエータとして前輪操舵
用パワーステアリング装［６及び後輪抄　　　←１［ 舵用パワーステアリング装置７を用いた場合について説
明したが、これに限定されず、他の装置も用いることが
できる、 発明の効果 以上の説明から明らかなように、この発明によれば、タ
ンデム型ベーンポンプに設けたメインポンプ室及びサブ
ポンプ室内に、吸入油路から導かれる作虻油のほかに、
一方の戻り油路から還流される作動油をも加算して導入
させることができ、したがって、作動油の吸入ｔを多く
することができる、そのため、吸入油路を大型化するこ
となく、メインポンプ室及びサブポンプ室内でのキャビ
テーションによる騒音の発生を極力防止することができ
る。また、この発明によれば、リザーバタンクには、他
方の戻り油路からの作動油のみしか還流されないので、
リザーバタンク内の作動油の油面変動を極力防止して、
吸入油路からの突気の吸込を防止することができ、した
がって、リザーバタンクは小型なままで、空気吸込によ
るポンプ製音を防止することができる。かく【、て、装
置全体管小型＠ｔなままで、騒音を小さくした作動油循
環装置を提供することができる。In addition, in the above practical example, a case was explained in which a power steering device for front wheel steering [6 and a power steering device for rear wheel steering 7] were used as actuators, but the present invention is not limited to this, and other devices may also be used. Effects of the InventionAs is clear from the above description, according to the present invention, in addition to the crop oil introduced from the suction oil path, into the main pump chamber and sub-pump chamber provided in the tandem vane pump.
The hydraulic oil returned from one of the return oil passages can also be introduced in addition, and therefore the suction of hydraulic oil can be increased. Noise generation due to cavitation in the chamber and sub-pump chamber can be prevented as much as possible. Further, according to this invention, only the hydraulic oil from the other return oil path is returned to the reservoir tank.
To prevent fluctuations in the hydraulic oil level in the reservoir tank as much as possible,
It is possible to prevent sudden air from being sucked in from the suction oil passage, and therefore, it is possible to prevent pump noise due to air suction while keeping the reservoir tank small. Thus, it is possible to provide a hydraulic oil circulation device with reduced noise while keeping the entire device small in size.

【図面の簡単な説明】[Brief explanation of the drawing]

第１ａ図はこの発明に係る作動油循環装置の一実施例を
示す油圧回路図、第１ｂ図は第１ａ図に示した咋動油循
Ｗ装着に用いるタンデム型ベーンポンプを示す断面図、
第２ａ図は従来の作動油循環装置を示す油圧回路図、第
２ｂ図は第２ａ図に示した作動油循環装置に用いるタン
デム型ベーンポンプを示す断面図である。 １・・・タンデム型ベーンポンプ、２・・・メインポン
プ室、３・・・サブポンプ室、４・・・リザーバタンク
、５・・・吸ス油路、６・・・前輪操舵用パワーステア
リング装置、７・・・後輪操舵用パワーステアリング装
置、８．９・・・併給油路、１０　、１１・・・戻り油
路、１４　、１５・・・吸入孔。 第１ａ図 １−−−−一タゾデ狐型ベ−ン〆ンア　　　　２−−−
−−メインボンデ望３−−−−−すデダンデｌ　　　　
　　　　　　４−−−−−りず−バＹゾク５−−−−−
号入殖１を ６−−−−−１］刺１陽１も用ＩずワースヤＴ７ング幕
１１４．１５−一一曜八シFig. 1a is a hydraulic circuit diagram showing an embodiment of the hydraulic oil circulation device according to the present invention, Fig. 1b is a sectional view showing a tandem vane pump used for mounting the movable oil circulation W shown in Fig. 1a,
FIG. 2a is a hydraulic circuit diagram showing a conventional hydraulic oil circulation device, and FIG. 2b is a sectional view showing a tandem vane pump used in the hydraulic oil circulation device shown in FIG. 2a. DESCRIPTION OF SYMBOLS 1... Tandem vane pump, 2... Main pump chamber, 3... Sub pump chamber, 4... Reservoir tank, 5... Suction oil passage, 6... Power steering device for front wheel steering, 7... Power steering device for rear wheel steering, 8.9... Combined oil supply path, 10, 11... Return oil path, 14, 15... Suction hole. Fig. 1a 1 ---- 1 Tazode fox type vane 2 ----
---Main Bonde Desi 3----Su Dedande L
4-------RizubaYzoku5-------
No. 1 6-----1] 1st part 1st part 1st part 7th part 114.15-11th part 1st part

Claims (1)

【特許請求の範囲】[Claims] （１）タンデム型ベーンポンプに設けたメインポンプ室
及びサブポンプ室内に、リザーバタンクから吸入油路を
介して吸入された作動油を、これらメインポンプ室及び
サブポンプ室内で加圧し、それぞれのポンプ室で加圧さ
れた作動油をそれぞれのアクチュエータに供給油路を介
して供給してこれらアクチュエータを駆動する作動油循
環装置において、前記アクチュエータからの各戻り油路
のうちの一方の戻り油路を、リザーバタンクを経由させ
ることなく、前記メインポンプ室及びサブポンプ室に連
通する前記タンデム型ベーンポンプの各吸入孔に接続し
たことを特徴とする作動油循環装置。(1) Hydraulic oil sucked from the reservoir tank into the main pump chamber and sub-pump chamber provided in the tandem vane pump through the suction oil path is pressurized in the main pump chamber and sub-pump chamber, and then pressurized in each pump chamber. In a hydraulic oil circulation device that supplies pressurized hydraulic oil to each actuator through a supply oil passage to drive these actuators, one of the return oil passages from the actuator is connected to a reservoir tank. A hydraulic oil circulation device, characterized in that the hydraulic oil circulation device is connected to each suction hole of the tandem vane pump that communicates with the main pump chamber and the sub-pump chamber without passing through.
JP59270513A 1984-12-21 1984-12-21 Working oil circulating device Pending JPS61150871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59270513A JPS61150871A (en) 1984-12-21 1984-12-21 Working oil circulating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59270513A JPS61150871A (en) 1984-12-21 1984-12-21 Working oil circulating device

Publications (1)

Publication Number Publication Date
JPS61150871A true JPS61150871A (en) 1986-07-09

Family

ID=17487280

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59270513A Pending JPS61150871A (en) 1984-12-21 1984-12-21 Working oil circulating device

Country Status (1)

Country Link
JP (1) JPS61150871A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171280U (en) * 1987-04-30 1988-11-08
JPS63312267A (en) * 1987-06-12 1988-12-20 Kubota Ltd Hydraulic circuit for tractor
JPH02122192U (en) * 1989-03-17 1990-10-05
EP1283331A1 (en) * 2001-08-09 2003-02-12 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Lubricant pump for combustion engine
JP2009190538A (en) * 2008-02-14 2009-08-27 Kobelco Cranes Co Ltd Circuit for operation fluid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171280U (en) * 1987-04-30 1988-11-08
JPS63312267A (en) * 1987-06-12 1988-12-20 Kubota Ltd Hydraulic circuit for tractor
JPH02122192U (en) * 1989-03-17 1990-10-05
EP1283331A1 (en) * 2001-08-09 2003-02-12 Dr.Ing. h.c.F. Porsche Aktiengesellschaft Lubricant pump for combustion engine
JP2009190538A (en) * 2008-02-14 2009-08-27 Kobelco Cranes Co Ltd Circuit for operation fluid

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