JPH0420653Y2 - - Google Patents
Info
- Publication number
- JPH0420653Y2 JPH0420653Y2 JP1983140077U JP14007783U JPH0420653Y2 JP H0420653 Y2 JPH0420653 Y2 JP H0420653Y2 JP 1983140077 U JP1983140077 U JP 1983140077U JP 14007783 U JP14007783 U JP 14007783U JP H0420653 Y2 JPH0420653 Y2 JP H0420653Y2
- Authority
- JP
- Japan
- Prior art keywords
- distance
- vehicle
- ground
- suspension
- sensing sensor
- 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.)
- Expired
Links
- 239000000725 suspension Substances 0.000 claims description 19
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Description
【考案の詳細な説明】
この考案は路面状態に応じてサスペンシヨンの
硬さを切換えようにした電子制御サスペンシヨン
に関する。[Detailed Description of the Invention] This invention relates to an electronically controlled suspension that changes the stiffness of the suspension depending on road surface conditions.
シヨツクアブソーバの減衰力や空気ばねのばね
定数を電子的に制御して乗心地や操縦安定性を向
上させるようにした電子制御サスペンシヨンが考
えられている。このような電子制御サスペンシヨ
ンにおいては自動車の進行方向前方の路面状態を
いち早く感知して電子制御サスペンシヨンをハー
ドあるいはソフトに切換えておくことが要望され
ている。 Electronically controlled suspensions are being considered that improve riding comfort and handling stability by electronically controlling the damping force of the shock absorber and the spring constant of the air spring. In such an electronically controlled suspension, it is desired to quickly sense the road surface condition in front of the vehicle in the direction of travel and to switch the electronically controlled suspension to hard or soft.
この考案は上記の点に鑑みてなされたものでそ
の目的は路面状態に応じてサスペンシヨンの硬さ
を切換えて乗心地や操縦安定性を一層向上させる
ことができる電子制御サスペンシヨンを提供する
ことにある。 This idea was made in view of the above points, and its purpose is to provide an electronically controlled suspension that can further improve ride comfort and handling stability by switching the suspension stiffness depending on the road surface condition. It is in.
以下、図面を参照してこの考案の一実施例に係
る電子制御サスペンシヨンについてい説明する。
第１図は自動車のバンパに設けられる距離感知セ
ンサの信号の入出力を示す図である。第１図にお
いて、１１は自動車本体、１２は車輪、１３はフ
ロントバンパである。このフロントバンパ１３の
左右には第２図にその断面図を示すような距離感
知センサ３１，３２が埋設されている。この距離
感知センサ３１，３２は例えば超音波により自動
車の前方の対地間距離を検出しているものであ
る。上記距離感知センサ３１，３２は自動車の進
行方向前方の路面に断続的に超音波信号ａを出力
する。ここで、超音波信号ｂは超音波信号ａの反
射波である。上記超音波信号ａが発射されてから
超音波信号ｂが入射されるまでの時間差を測定す
ることにより、自動車の前方の対地間距離を測定
するとができる。 Hereinafter, an electronically controlled suspension according to an embodiment of the invention will be explained with reference to the drawings.
FIG. 1 is a diagram showing the input and output of signals of a distance sensing sensor provided on a bumper of an automobile. In FIG. 1, 11 is a car body, 12 is a wheel, and 13 is a front bumper. Distance sensing sensors 31 and 32 are embedded in the left and right sides of the front bumper 13, as shown in a cross-sectional view in FIG. The distance sensing sensors 31 and 32 detect the distance to the ground in front of the vehicle using, for example, ultrasonic waves. The distance sensing sensors 31 and 32 intermittently output ultrasonic signals a to the road surface in front of the vehicle in the direction of travel. Here, the ultrasonic signal b is a reflected wave of the ultrasonic signal a. By measuring the time difference between when the ultrasonic signal a is emitted and when the ultrasonic signal b is incident, the distance to the ground in front of the vehicle can be measured.
次に、第２図はフロントバンパ１３に埋設され
た距離感知センサ３１，３２の断面図である。第
２図において、１５は距離感知センサ３１，３２
のホーン、１６は超音波振動子である。つまり、
上記超音波振動子から発生する超音波はホーン１
５を介して自動車の前方の路面に向けて発射され
る。 Next, FIG. 2 is a sectional view of distance sensing sensors 31 and 32 embedded in the front bumper 13. In FIG. 2, 15 is a distance sensing sensor 31, 32.
The horn 16 is an ultrasonic vibrator. In other words,
The ultrasonic waves generated from the above ultrasonic vibrator are horn 1.
5 and is fired towards the road in front of the car.
第３図に従つて更に詳細に説明すると、上記距
離感知センサ３１，３２はそれぞれ自動車の進行
方向前方の路面に断続的に超音波信号ａを出力す
る。そして、超音波信号ｂは超音波信号ａの反射
波である。上記超音波信号ａが発射されてから超
音波信号ｂが入射されるまでの時間差を測定する
ことにより、自動車の前方の対地間距離を測定す
ることができる。上記距離感知センサ３１，３２
から発射される超音波信号ａの発進時刻及び超音
波信号ｂの受信時刻は制御部３３において計測さ
れており、自動車の右前方の対地間距離は距離感
知センサ３１の信号をもとに、自動車の左前方の
対地間距離は距離感知センサ３２の信号をもとに
算出される。さらに、上記制御部３３において自
動車の右前方の対地間距離と左前方の対地間距離
とが比較される。ここで、自動車の右前方の対地
間距離と左前方の対地間距離に差がある（路面の
横方向に凹凸があ）場合にはハード／ソフト切換
部３４に入力される信号ｃはＨレベルとされる。
このハード／ソフト切換部３４は入力される信号
ｃがＨレベルとなるとサスペンシヨンの硬さを切
換えるソレノイド３５を励磁する。 To explain in more detail with reference to FIG. 3, each of the distance sensing sensors 31 and 32 intermittently outputs an ultrasonic signal a to the road surface in front of the vehicle in the direction of travel. The ultrasonic signal b is a reflected wave of the ultrasonic signal a. By measuring the time difference between when the ultrasonic signal a is emitted and when the ultrasonic signal b is incident, the distance to the ground in front of the vehicle can be measured. The distance sensing sensor 31, 32
The starting time of the ultrasonic signal a and the reception time of the ultrasonic signal b emitted from the vehicle are measured by the control unit 33, and the distance to the ground to the right of the vehicle is determined based on the signal from the distance sensor 31. The left front distance to the ground is calculated based on the signal from the distance sensor 32. Furthermore, the control section 33 compares the distance to the ground at the front right of the vehicle and the distance to the ground at the front left of the vehicle. Here, if there is a difference between the distance to the ground at the right front of the vehicle and the distance to the ground at the front left of the vehicle (there is unevenness in the lateral direction of the road surface), the signal c input to the hard/soft switching unit 34 is at H level. It is said that
This hard/soft switching section 34 excites a solenoid 35 that switches the stiffness of the suspension when the input signal c becomes H level.
次に上記のように構成されたこの考案の実施例
の動作について説明する。距離感知センサ３１，
３２から発射される超音波信号ａの発進時刻及び
超音波信号ｂの受信時刻は制御部３３において計
測されており、自動車の右前方の対地間距離は距
離感知センサ３１の信号をもとに、自動車の左前
方の対地間距離は距離感知センサ３２の信号をも
とに算出される。そして、制御部３３において自
動車の右前方の対地間距離と左前方の対地間距離
とが比較される。ここで、自動車の右前方の対地
間距離と左前方の対地間距離に差がある（路面の
横方向に凹凸がある）場合にはハード／ソフト切
換部３４に入力される信号ｃはＨレベルとされ
る。この結果、ハード／ソフト切換部３４により
ソレノイド３５が励磁されて、サスペンシヨンが
ハードにされる。 Next, the operation of the embodiment of the invention constructed as described above will be explained. distance sensing sensor 31,
The starting time of the ultrasonic signal a and the reception time of the ultrasonic signal b emitted from the controller 32 are measured by the control unit 33, and the distance to the ground in front of the right side of the car is determined based on the signal from the distance sensor 31. The left front distance to the ground of the vehicle is calculated based on the signal from the distance sensor 32. Then, the control unit 33 compares the distance to the ground at the front right of the vehicle and the distance to the ground at the front left of the vehicle. Here, if there is a difference between the distance to the ground at the front right and the distance to the ground at the front left of the vehicle (the road surface is uneven in the lateral direction), the signal c input to the hard/soft switching section 34 is at H level. It is said that As a result, the solenoid 35 is energized by the hard/soft switching section 34, and the suspension is made hard.
一方、制御部３３は右前方の対地間距離と左前
方の対地間距離が等しいと判定すると信号ｃをＬ
レベル状態に保つ。この結果、ハード／ソフト切
換部３４によりソレノイド３５が励磁されないた
め、サスペンシヨンはソフトにされる。 On the other hand, when the control unit 33 determines that the distance between the right front ground and the left front ground distance is equal, the control unit 33 changes the signal c to L.
keep it level. As a result, the solenoid 35 is not energized by the hard/soft switching section 34, so that the suspension is soft.
従つて、上記実施例によれば、自動車の右及び
左前方の対地間距離に差があることを検出したと
きにサスペンシヨンをハードに切換えるようにし
たので、片輪が路面の凹凸を通過したことにより
車体に生じたローリングを短時間で収れんさせて
操縦安定性及び乗心地を向上させることができ、
また左右両輪が同時に路面の凹凸を通過する際に
はサスペンシヨンがソフトに保たれて良好な乗心
地を確保させることができる。 Therefore, according to the above embodiment, the suspension is switched to hard mode when it is detected that there is a difference in the distance between the right and left front of the vehicle. As a result, rolling that occurs in the vehicle body can be suppressed in a short time, improving handling stability and ride comfort.
Additionally, when both the left and right wheels simultaneously pass over uneven road surfaces, the suspension remains soft, ensuring a good ride.
以上詳述したようにこの考案によれば、自動車
前方の路面状態、つまり右前方の対地間距離及び
左前方の対地間距離を比較して両者に差があるか
検出し、その検出信号に応じてサスペンシヨンの
硬さを切換えるので、車体のロールを効果的に収
れんし、乗心地や操縦安定性を一層向上させるこ
とができる電子制御サスペンシヨンを提供するこ
とができる。 As detailed above, according to this invention, the road surface condition in front of the vehicle, that is, the distance to the ground in front of the right side and the distance to the ground in front of the left side, is compared to detect whether there is a difference between the two, and based on the detected signal, Since the stiffness of the suspension can be switched by using the steering wheel, it is possible to provide an electronically controlled suspension that can effectively suppress vehicle body roll and further improve ride comfort and handling stability.
第１図は自動車のバンパに設けられる距離感知
センサの信号の入出力を示す図、第２図は距離感
知センサの断面図、第３図はこの考案の一実施例
に係る電子制御サスペンシヨンの具体的なブロツ
ク図である。
３１，３２……距離感知センサ、２１……制御
部、２２……ハード／ソフト切換部、２３……ソ
レノイド。
Fig. 1 is a diagram showing the input and output of signals of a distance sensing sensor installed on the bumper of an automobile, Fig. 2 is a sectional view of the distance sensing sensor, and Fig. 3 is a diagram of an electronically controlled suspension according to an embodiment of this invention. It is a concrete block diagram. 31, 32...Distance sensing sensor, 21...Control unit, 22...Hard/soft switching unit, 23...Solenoid.
Claims (1)
備えた電子制御サスペンシヨンにおいて、それぞ
れ自動車の右前方及び左前方の対地間距離を検出
する右前方距離感知センサ及び左前方距離感知セ
ンサと、この各距離感知センサからそれぞれ得ら
れる右前方距離データ及び左前方距離データを比
較し両者間に差があるかを検出する路面状態検出
部と、この路面状態検出部の検出信号に応じて上
記サスペンシヨンの硬さを切換える制御信号を上
記切換部に出力する手段とを具備したことを特徴
とする電子制御サスペンシヨン。 In an electronically controlled suspension equipped with a switching section that can change the stiffness of the suspension, there is provided a right front distance sensing sensor and a left front distance sensing sensor for detecting the ground distance of the right front and left front of the vehicle, respectively; A road surface condition detection section compares right front distance data and left front distance data respectively obtained from the distance sensing sensor and detects whether there is a difference between the two; An electronically controlled suspension comprising means for outputting a control signal for switching the stiffness to the switching section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14007783U JPS6047612U (en) | 1983-09-09 | 1983-09-09 | electronically controlled suspension |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14007783U JPS6047612U (en) | 1983-09-09 | 1983-09-09 | electronically controlled suspension |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6047612U JPS6047612U (en) | 1985-04-03 |
| JPH0420653Y2 true JPH0420653Y2 (en) | 1992-05-12 |
Family
ID=30313758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14007783U Granted JPS6047612U (en) | 1983-09-09 | 1983-09-09 | electronically controlled suspension |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047612U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0613245B2 (en) * | 1985-10-01 | 1994-02-23 | トヨタ自動車株式会社 | Suspension controller |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963219A (en) * | 1982-09-30 | 1984-04-10 | Hino Motors Ltd | Air suspension device |
-
1983
- 1983-09-09 JP JP14007783U patent/JPS6047612U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5963219A (en) * | 1982-09-30 | 1984-04-10 | Hino Motors Ltd | Air suspension device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6047612U (en) | 1985-04-03 |
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