JPS621665A - Four-wheel drive car with antilock braking device - Google Patents

Four-wheel drive car with antilock braking device

Info

Publication number
JPS621665A
JPS621665A JP13928985A JP13928985A JPS621665A JP S621665 A JPS621665 A JP S621665A JP 13928985 A JP13928985 A JP 13928985A JP 13928985 A JP13928985 A JP 13928985A JP S621665 A JPS621665 A JP S621665A
Authority
JP
Japan
Prior art keywords
braking
wheel
hydraulic pressure
antilock
lock
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
JP13928985A
Other languages
Japanese (ja)
Inventor
Etsuo Fujii
藤井 悦夫
Masamitsu Sato
真実 佐藤
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP13928985A priority Critical patent/JPS621665A/en
Publication of JPS621665A publication Critical patent/JPS621665A/en
Pending legal-status Critical Current

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  • Regulating Braking Force (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)

Abstract

PURPOSE:To make improvements in an antilock effect, by installing a braking hydraulic pressure reducing device, letting braking hydraulic pressure at the rear-wheel side forcibly reduce at the time of operation of an antilock mechanism, in a braking device. CONSTITUTION:At the time of braking as a car is driving in a four-wheel drive state, any of respective wheels Wfl, Wfr, Wrl and Wrr is on the verge of being locked, an antilock mechanism 9 operates whereby each position of both first and second solenoid selector valves 10 and 11 is selected, connecting a rear-wheel braking mechanism to a reservoir R With this connection, braking hydraulic pressure in this rear-wheel braking mechanism is remarkably reduced. However, these rear wheels Wrl and Wrr come to rotate in response to rotation of front wheels Wfl and Wfr in consequence, so that rotation of these rear wheels Wrl and Wrr is controllable by antilock control of these front wheels Wfl and Wfr, thus a sufficient antilock effect is securable.

Description

【発明の詳細な説明】 A0発明の目的 (1)  産業上の利用分野 本発明は、左右の前輪にそれぞれ連なる一対の前車軸を
相互に連結する前部差動装置と、左右の後輪にそれぞれ
連なる一対の後車軸を相互に連結する後部差動装置とが
直結され、ブレーキ装置には、少なくとも前輪のための
アンチロック機構が付設されるアンチロックブレーキ装
置付四輪駆動車に関する。
[Detailed Description of the Invention] A0 Objective of the Invention (1) Industrial Application Field The present invention relates to a front differential device that interconnects a pair of front axles connected to left and right front wheels, and The present invention relates to a four-wheel drive vehicle with an anti-lock brake device, in which a rear differential device that interconnects a pair of consecutive rear axles is directly connected, and the brake device is provided with an anti-lock mechanism for at least the front wheels.

(2)従来の技術 車両の運動性能や路面の摩擦係数の低い雪路等での走行
性能をより向上するために、四輪駆動車の開発が進めら
れており、この四輪駆動車にアンチロックブレーキ装置
を装備しようとする試みもなされている。
(2) Conventional technology Four-wheel drive vehicles are being developed in order to further improve the driving performance of vehicles and their driving performance on snowy roads with a low coefficient of friction. Attempts have also been made to equip lock brake devices.

(3)発明が解決しようとする問題点 ところが、従来の二輪駆動車で用いたアンチロックブレ
ーキ装置をそのまま四輪駆動車に適用したのでは不都合
が生じる。すなわち四輪駆動車では、前車軸と後車軸と
が相互に影響を及ぼし合っているので、各車輪が相互に
牽制し合って充分なアンチロック効果が得られない。
(3) Problems to be Solved by the Invention However, if the anti-lock brake device used in conventional two-wheel drive vehicles is applied as is to four-wheel drive vehicles, problems will arise. That is, in a four-wheel drive vehicle, the front axle and the rear axle influence each other, so each wheel restrains each other, making it impossible to obtain a sufficient anti-lock effect.

本発明は、かかる事情に鑑みてなされたものであり、ア
ンチロック作動時には、後輪側制動油圧を低減して前輪
のみのアンチロック制御を行なうことによりアンチロッ
ク効果を向上したアンチロックブレーキ装置付四輪駆動
車を提供することを目的とする。
The present invention has been made in view of the above circumstances, and is equipped with an anti-lock brake device that improves the anti-lock effect by reducing the rear wheel braking hydraulic pressure and performing anti-lock control only on the front wheels when the anti-lock is activated. The purpose is to provide four-wheel drive vehicles.

B1発明の構成 (1)  問題点を解決するための手段本発明によれば
、ブレーキ装置には、アンチロック機構の作動時に後輪
側制動油圧を強制的に減少せしめる制動油圧低減手段が
設けられる。
B1 Structure of the Invention (1) Means for Solving the Problems According to the present invention, the brake device is provided with a braking oil pressure reducing means for forcibly reducing the rear wheel braking oil pressure when the anti-lock mechanism is activated. .

(2)作 用 アンチロック作動時には、制動油圧低減手段の働きによ
り後輪側制動油圧が減少するので、前輪のアンチロック
制御を行なうことにより後輪の回転を制御することがで
き、充分なアンチロック効果が得られる。
(2) Function When anti-lock is activated, the rear wheel brake hydraulic pressure is reduced by the function of the brake hydraulic pressure reducing means, so by performing anti-lock control on the front wheels, the rotation of the rear wheels can be controlled and sufficient anti-lock is achieved. A locking effect can be obtained.

(3)実施例 以下、図面により本発明の一実施例について説明すると
、先ず第1図において、一対の前輪Wf1、Wfrおよ
び一対の後輪Wr1.Wrrが図示しない車体の前部お
よび後部にそれぞれ懸架されており、両前輪Wf1.W
frおよび両後輪WrLWrrにはブレーキ機構Bfl
、Bfr;Brl、Brrがそれぞれ装着される。
(3) Embodiment An embodiment of the present invention will be described below with reference to the drawings. First, in FIG. 1, a pair of front wheels Wf1, Wfr and a pair of rear wheels Wr1. Wrr are respectively suspended at the front and rear parts of the vehicle body (not shown), and both front wheels Wf1. W
Brake mechanism Bfl is installed on fr and both rear wheels WrLWrr.
, Bfr; Brl, and Brr are attached, respectively.

左右の前輪Wf1.Wfrにそれぞれ連なる一対の前車
軸Afl、Afrは前部差動装置1を介して相互に連結
され、また左右の後輪Wrll、Wrrにそれぞれ連な
る一対の後車軸Arf、 Arrは後部差動装置2を介
して相互に連結される。
Left and right front wheels Wf1. A pair of front axles Afl, Afr connected to Wfr, respectively, are connected to each other via a front differential 1, and a pair of rear axles Arf, Arr connected to left and right rear wheels Wrll, Wrr, respectively, are connected to each other via a front differential 1. are interconnected via.

前部差動装置1および後部差動装置2の入力部には前部
推進軸3および後部推進軸4が接続されており、これら
の推進軸3.4には中央部差動装置5を介して相互に連
結される。この中央部差動装置5の入力部には、エンジ
ンおよび変速機を含むパワーユニットPが接続される。
A front propulsion shaft 3 and a rear propulsion shaft 4 are connected to the input parts of the front differential 1 and the rear differential 2, and a central differential 5 is connected to these propulsion shafts 3.4. and are interconnected. A power unit P including an engine and a transmission is connected to an input portion of the central differential device 5.

中央部差動装置5は、ロック機構6を備えるものであり
、このロック機構6の作動時には、前部および後部推進
軸3.4が直結された四輪駆動の状態となる。
The central differential 5 includes a locking mechanism 6, and when the locking mechanism 6 is activated, the front and rear propulsion shafts 3.4 are directly connected, resulting in a four-wheel drive state.

第2図において、前記各ブレーキ機構Bf#。In FIG. 2, each brake mechanism Bf#.

Bfr;Brf、Brrを備えるブレーキ装置Bは、そ
れらのブレーキ機構Bfj!、Bfr;Brff、Br
rと、タンデム型マスクシリンダMcとの間にブレーキ
油圧モジュレータMft’、Mfr;Mr(1,Mrr
が設けられて成る。
A brake device B including Bfr;Brf and Brr is a brake mechanism Bfj! , Bfr; Brff, Br
Brake hydraulic modulators Mft', Mfr; Mr(1, Mrr
It consists of

各ブレーキ油圧モジュレータMff、Mfr;Mrj!
、Mrrはタンデム型マスクシリンダMcの出力油圧に
応じた制動油圧を各ブレーキ機構Bfj!、Bfr;B
rl、Brrに供給するものであり、前記マスクシリン
ダMcの一方の出力ポードアからの油圧がブレーキ油圧
モジュレータMff、Mrrに供給され、他方の出力ポ
ート8からの油圧がブレーキ油圧モジュレータMfr、
Mrlに供給される。
Each brake hydraulic modulator Mff, Mfr; Mrj!
, Mrr applies braking oil pressure to each brake mechanism Bfj! according to the output oil pressure of the tandem mask cylinder Mc. ,Bfr;B
The oil pressure from one output port door of the mask cylinder Mc is supplied to the brake oil pressure modulators Mff and Mrr, and the oil pressure from the other output port 8 is supplied to the brake oil pressure modulators Mfr,
Supplied to Mrl.

このブレーキ装置Bには、アンチロック機構9が付設さ
れており、このアンチロック機構9はその作動時に各ブ
レーキ油圧モジュレータMfl、Mf r ;Mr 1
.Mr rの出力油圧すなわち制動油圧を減少させるべ
く、各ブレーキ油圧モジュレータMf l、Mf r 
;Mr l、Mr rを作動せしめるためのHa油圧を
発生する。
This brake device B is attached with an anti-lock mechanism 9, and when the anti-lock mechanism 9 is activated, each brake hydraulic modulator Mfl, Mf r ;Mr 1
.. In order to reduce the output oil pressure of Mr r, that is, the braking oil pressure, each brake oil pressure modulator Mf l, Mf r
; Generates Ha hydraulic pressure to operate Mr l and Mr r.

本発明に従えば、後輪用ブレーキ機構Brl。According to the invention, the rear wheel brake mechanism Brl.

Brrの制動油圧を減少せしめるべく、マスクシリンダ
Mcの一方の出力ポードアと右後輪ブレーキ油圧モジュ
レータMrrとの間に制動油圧低減手段としての第1電
磁切換弁10が介装され、他方の出力ポート8と左後輪
ブレーキ油圧モジュレータMrlとの間に制動油圧低減
手段としての第2電磁切換弁11が介装される。
In order to reduce the braking oil pressure of Brr, a first electromagnetic switching valve 10 as a braking oil pressure reducing means is interposed between one output port door of the mask cylinder Mc and the right rear wheel brake oil pressure modulator Mrr, and the other output port A second electromagnetic switching valve 11 as a brake hydraulic pressure reducing means is interposed between the brake hydraulic pressure modulator 8 and the left rear wheel brake hydraulic pressure modulator Mrl.

これらの電磁切換弁10.ilは、通常は、マスクシリ
ンダMcの岡山カポードア、8からの油圧を両ブレーキ
油圧モジュレータMrr、Mrj2に供給し得る位置に
あるが、励磁時には、両ブレーキ油圧モジュレータMr
CMrrをマスクシリンダMcのリザーバRへ接続する
位置に切換ねる。
These electromagnetic switching valves10. Normally, il is in a position where it can supply the hydraulic pressure from the Okayama cupboard door 8 of the mask cylinder Mc to both brake hydraulic modulators Mrr and Mrj2, but during excitation, both brake hydraulic modulators Mr.
Switch CMrr to the position where it is connected to the reservoir R of the mask cylinder Mc.

両電磁弁10.11の作動を制御するための制御器12
には、アンチロック機構9からその作動状態を示す信号
が入力さされるとともに、中央部差動装置5のロック機
構6から作動状態を示す信号が入力されており、制御器
12はロック機構6が作動した四輪駆動状態にあるとき
に、アンチロック機構9が作動すると、前記電磁弁10
.11を切換えて、後輪用ブレーキ油圧モジュレータM
rr、MrlをリザーバRに接続する。
Controller 12 for controlling the operation of both solenoid valves 10.11
A signal indicating the operating state is inputted from the anti-lock mechanism 9, and a signal indicating the operating state is inputted from the locking mechanism 6 of the central differential device 5, and the controller 12 controls whether the locking mechanism 6 is When the anti-lock mechanism 9 is activated in the activated four-wheel drive state, the solenoid valve 10 is activated.
.. 11, rear wheel brake hydraulic modulator M
Connect rr and Mrl to reservoir R.

次にこの実施例の作用について説明すると、ロック機構
6により中央部差動装置5をロックした四輪駆動で走行
しているときの制動時に各輪Wf1、 Wf r HW
r j2. Wr rのいずれかがロックしそうになる
と、アンチロック機構9が作動して第1.第2電磁切換
弁10.11の位置が切換わる。すなわち第1および第
2電磁弁10.11が後輪用ブレーキ油圧モジュレータ
Mrr、Mrlを介して後輪用ブレーキ機構Brr、B
rfをリザーバRに接続する位置に切換わるので、後輪
用ブレーキ機構Brr、Br!!の制動油圧は著しく低
減する。
Next, to explain the operation of this embodiment, each wheel Wf1, Wf r HW is activated during braking when driving in four-wheel drive with the central differential device 5 locked by the locking mechanism 6.
r j2. When one of Wr r is about to lock, the anti-lock mechanism 9 is activated and the first one is about to lock. The position of the second electromagnetic switching valve 10.11 is switched. That is, the first and second solenoid valves 10.11 operate the rear wheel brake mechanisms Brr, B via the rear wheel brake hydraulic modulators Mrr, Mrl.
The rf is switched to the position where it is connected to the reservoir R, so the rear wheel brake mechanism Brr, Br! ! The braking oil pressure will be significantly reduced.

しかしながら後輪Wrl、Wrrは、前輪Wff、Wf
rの回転に応動することとなり、前輪Wfj2.Wfr
のアンチロック制御により後輪Wr(1,Wrrの回転
を制御することができ、充分なアンチロック効果が得ら
れる。すなわち、後輪側でスリップを検出したときでも
、前輪Wfl、Wfrの制動油圧の制御により、後輪”
JJrl、Wrrのアンチロック制御を充分に行なうこ
とができる。
However, the rear wheels Wrl and Wrr are the front wheels Wff and Wf.
In response to the rotation of the front wheels Wfj2. Wfr
The anti-lock control allows the rotation of the rear wheels Wr (1, Wrr) to be controlled, and a sufficient anti-lock effect can be obtained.In other words, even when a slip is detected on the rear wheel side, the braking hydraulic pressure of the front wheels Wfl, Wfr remains unchanged. By controlling the rear wheel
Anti-lock control of JJrl and Wrr can be sufficiently performed.

尚、ロック機構6によるロック状態が解除されていると
きには、通常のアンチロック作動が行われる。
Note that when the locked state by the lock mechanism 6 is released, a normal anti-lock operation is performed.

以上の実施例は、中央部差動装置5をロックした四輪駆
動状態について述べたが、本発明は、パートタイム式四
輪駆動車の四輪駆動時や、前部および後部差動装置1.
2間をビスカスカップリングを介して連結した四輪駆動
車についても適用可能である。
Although the above embodiment has been described in a four-wheel drive state in which the central differential device 5 is locked, the present invention can also be applied to a four-wheel drive state of a part-time four-wheel drive vehicle, and the front and rear differential devices 1 ..
It is also applicable to a four-wheel drive vehicle in which the two are connected via a viscous coupling.

C0発明の効果 以上のように本発明によれば、ブレーキ装置には、アン
チロック機構の作動時に後輪側制動油圧を強制的に減少
せしめる制動油圧低減手段が設けられるので、後輪の回
転を前輪側で制御することができ、充分なアンチロック
効果を得ることができる。
C0 Effects of the Invention As described above, according to the present invention, the brake system is provided with a brake hydraulic pressure reducing means that forcibly reduces the rear wheel brake hydraulic pressure when the anti-lock mechanism is activated, so that the rotation of the rear wheel is reduced. It can be controlled on the front wheel side and a sufficient anti-lock effect can be obtained.

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

図面は本発明の一実施例を示すものであり、第1図は駆
動系の概略図、第2図はブレーキ装置の油圧回路図であ
る。 1・・・前部差動装置、2・・・後部差動装置、9・・
・アンチロック機構、10.11・・・制動油圧低減手
段としての電磁切換弁、Afj!、Afr・・・前車軸
、Arl、Arr・・・後車軸、B・・・ブレーキ装置
、Wf CWf r・−・前輪、Wr l、 Wr r
−・−後輪時 許 出 願 人 本田技研工業株式会社
第1図
The drawings show one embodiment of the present invention, and FIG. 1 is a schematic diagram of a drive system, and FIG. 2 is a hydraulic circuit diagram of a brake device. 1... Front differential gear, 2... Rear differential gear, 9...
・Anti-lock mechanism, 10.11... Solenoid switching valve as means for reducing braking oil pressure, Afj! , Afr...Front axle, Arl, Arr...Rear axle, B...Brake device, Wf CWf r...Front wheel, Wr l, Wr r
−・−Rear wheel application person Honda Motor Co., Ltd. Figure 1

Claims (1)

【特許請求の範囲】[Claims] 左右の前輪にそれぞれ連なる一対の前車軸を相互に連結
する前部差動装置と、左右の後輪にそれぞれ連なる一対
の後車軸を相互に連結する後部差動装置とが直結され、
ブレーキ装置には、少なくとも前輪のためのアンチロッ
ク機構が付設されるアンチロックブレーキ装置付四輪駆
動車において、前記ブレーキ装置には、アンチロック機
構の作動時に後輪側制動油圧を強制的に減少せしめる制
動油圧低減手段が設けられることを特徴とするアンチロ
ックブレーキ装置付四輪駆動車。
A front differential device that interconnects a pair of front axles connected to left and right front wheels, respectively, and a rear differential device that interconnects a pair of rear axles connected to left and right rear wheels, respectively, are directly connected,
In a four-wheel drive vehicle with an anti-lock brake device in which the brake device is equipped with an anti-lock mechanism for at least the front wheels, the brake device includes a mechanism for forcibly reducing rear wheel braking hydraulic pressure when the anti-lock mechanism is activated. A four-wheel drive vehicle equipped with an anti-lock brake device, characterized in that a brake hydraulic pressure reducing means is provided.
JP13928985A 1985-06-26 1985-06-26 Four-wheel drive car with antilock braking device Pending JPS621665A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13928985A JPS621665A (en) 1985-06-26 1985-06-26 Four-wheel drive car with antilock braking device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13928985A JPS621665A (en) 1985-06-26 1985-06-26 Four-wheel drive car with antilock braking device

Publications (1)

Publication Number Publication Date
JPS621665A true JPS621665A (en) 1987-01-07

Family

ID=15241813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13928985A Pending JPS621665A (en) 1985-06-26 1985-06-26 Four-wheel drive car with antilock braking device

Country Status (1)

Country Link
JP (1) JPS621665A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422667U (en) * 1987-07-31 1989-02-06
JPH0268692A (en) * 1988-09-05 1990-03-08 Nippon Kaade Center Kk Processing method for magnetic card
US5445445A (en) * 1989-11-29 1995-08-29 Nissinbo Industries, Inc. Antiskid brake system having rear brake apportioning control

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6422667U (en) * 1987-07-31 1989-02-06
JPH0268692A (en) * 1988-09-05 1990-03-08 Nippon Kaade Center Kk Processing method for magnetic card
US5445445A (en) * 1989-11-29 1995-08-29 Nissinbo Industries, Inc. Antiskid brake system having rear brake apportioning control

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