JPS63242704A - Tire lateral force sensor - Google Patents
Tire lateral force sensorInfo
- Publication number
- JPS63242704A JPS63242704A JP62077275A JP7727587A JPS63242704A JP S63242704 A JPS63242704 A JP S63242704A JP 62077275 A JP62077275 A JP 62077275A JP 7727587 A JP7727587 A JP 7727587A JP S63242704 A JPS63242704 A JP S63242704A
- Authority
- JP
- Japan
- Prior art keywords
- lateral force
- tire
- tire lateral
- detected
- conductive rubber
- 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
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
この発明は、タイヤを側方に変形せんとするタイヤ横力
を検出するタイヤ横力センサに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to a tire lateral force sensor that detects tire lateral force that tends to deform a tire laterally.
［従来の技術］
走行する車両に制動を与えつつ急ハンドルを切ったよう
な場合、タイヤが側方に変形しつつ、スリップ音を立て
ることがある。これは、側方に変形したタイヤが路面に
よって擦られ、タイヤ泣きが発生するからであり、路面
に対するタイヤのグリップ力が極端に低下すると、危険
な横滑り事故に結び付きやすい。こうした車両の横滑り
事故は、タイヤを側方に変形せんとするタイヤ横力の異
常を検知し、直ちにエンジン出力を抑制することで、あ
る程度未然に防止することができる。このため、タイヤ
横力を車両の動力制御に取り込むべく、様々な試験や実
験が試みられている。[Prior Art] When a running vehicle suddenly turns the steering wheel while applying braking, the tires may deform laterally and make a slipping noise. This is because tires that have deformed laterally are rubbed by the road surface, causing tire tearing. If the tire's grip on the road surface is extremely reduced, it is likely to lead to dangerous skidding accidents. Such vehicle skidding accidents can be prevented to some extent by detecting an abnormality in the tire lateral force that tends to cause the tire to deform laterally, and immediately suppressing the engine output. For this reason, various tests and experiments have been attempted to incorporate tire lateral force into vehicle power control.
第６．７図に示す従来のタイヤ横力センサｌは、車軸２
から放射状に延びてホイール３を支える複数のフォーク
４に、歪みゲージ５を固定し、タイヤ６が横力を受けて
ホイール３のリム３ａが変形したときに、歪みゲージ５
の出力の変化からタイヤ横力を検出しようとするもので
ある。The conventional tire lateral force sensor l shown in Fig. 6.7 is
A strain gauge 5 is fixed to a plurality of forks 4 extending radially from the fork supporting the wheel 3, and when the tire 6 receives a lateral force and the rim 3a of the wheel 3 deforms, the strain gauge 5
This method attempts to detect tire lateral force from changes in output.
［発明が解決しようとする問題点］
上記従来のタイヤ横力センサｌは、フォーク４部分での
横力検出であるため、横力検出点が全円周に一様に分布
しているわけではなく、フォーク４ごとにタイヤ横力を
離散的に検出するため、例えばフォーク４とフォーク４
の間のタイヤ６が接地しているときに発生するタイヤ横
力については、検出精度が落ちる等の問題点があった。[Problems to be Solved by the Invention] Since the conventional tire lateral force sensor l described above detects lateral force at the 4 portions of the fork, the lateral force detection points are not uniformly distributed over the entire circumference. For example, since the tire lateral force is detected discretely for each fork 4,
Regarding the tire lateral force that occurs when the tires 6 between the two are in contact with the ground, there have been problems such as a decrease in detection accuracy.
また、フォーク４がホイール３を支える形式とは異なる
ディ”スフ形式のタイヤには適用できないため、汎用性
を欠く等の問題点があった。Further, since it cannot be applied to tires of a diffuser type different from the type in which the fork 4 supports the wheel 3, there are problems such as a lack of versatility.
［問題点を解決するための手段］
この発明は、上記問題点を解決したものであり、ホイー
ルに嵌合するタイヤの側壁部分に、前記ホイールの外周
に沿って環状に当接保持した感圧導電ゴムと、この感圧
導電ゴムの抵抗値から、タイヤを側方に変形せんとする
タイヤ横力を電気的に検出するタイヤ横力検出回路から
構成したことを特徴とするものである。[Means for Solving the Problems] The present invention solves the above-mentioned problems.The present invention solves the above-mentioned problems. It is characterized by comprising a conductive rubber and a tire lateral force detection circuit that electrically detects the tire lateral force that tends to deform the tire laterally from the resistance value of the pressure-sensitive conductive rubber.
［作用］
この発明は、ホイールに嵌合するタイヤの側壁部分に、
感圧導電ゴムを環状に当接保持し、この感圧導電ゴムの
抵抗値から、タイヤ横力を電気的に検出する。[Function] This invention provides a side wall portion of a tire that fits into a wheel.
A pressure-sensitive conductive rubber is held in contact with the tire in an annular shape, and the tire lateral force is electrically detected from the resistance value of the pressure-sensitive conductive rubber.
［実施例］
以下、この発明の実施例について、第１図ないし第５図
を参照して説明する。第１図は、この発明のタイヤ横力
センサの一実施例を示す斜視図、第２．３図は、それぞ
れ第１図に示したタイヤ横力センサの縦断面図及び回路
図である。[Embodiments] Examples of the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is a perspective view showing an embodiment of the tire lateral force sensor of the present invention, and FIGS. 2 and 3 are a longitudinal sectional view and a circuit diagram of the tire lateral force sensor shown in FIG. 1, respectively.
第１．２図中、タイヤ横力センサ１１は、ホイール３に
嵌合するタイヤ６の側壁部分に、ホイール３の外周に沿
って感圧導電ゴム１２を環状に当接保持し、感圧導電ゴ
ム１２に接続したタイヤ横力検出回路Ｉ３が、感圧導電
ゴムの抵抗値からタイヤ横力を電気的に検出する構成と
したものである。感圧導電ゴム１２は、両側を一対の電
極１４゜１５によって挟持してあり、電極１４の外側に
絶縁板！６を挟んで断面コ字状のホルダ１７に保持させ
である。ホルダ１７は、感圧導電ゴム夏２にタイヤ６の
側壁にしっかりと当接保持するためのもので、ホイール
３のリム３ａにボルト締め固定しである。１８は、感圧
導電ゴムＩ２の当たりを保つための環状ブツシュであり
、タイヤ６の側壁と電極１５の間に介在させである。In FIG. 1.2, the tire lateral force sensor 11 has a pressure-sensitive conductive rubber 12 annularly held in contact with the side wall portion of the tire 6 fitted to the wheel 3 along the outer periphery of the wheel 3. A tire lateral force detection circuit I3 connected to the rubber 12 is configured to electrically detect tire lateral force from the resistance value of the pressure-sensitive conductive rubber. The pressure-sensitive conductive rubber 12 is sandwiched between a pair of electrodes 14 and 15 on both sides, and an insulating plate is placed on the outside of the electrodes 14! 6 is held in a holder 17 having a U-shaped cross section. The holder 17 is for holding the pressure-sensitive conductive rubber cap 2 firmly in contact with the side wall of the tire 6, and is bolted to the rim 3a of the wheel 3. Reference numeral 18 denotes an annular bushing for maintaining contact with the pressure-sensitive conductive rubber I2, and is interposed between the side wall of the tire 6 and the electrode 15.
ここで、感圧導電ゴム１２は、外部から加わる圧力にほ
ぼ反比例して抵抗値が変化する性質をもつ。ここでは、
感圧導電ゴムＩ２の抵抗値を検出するため、第３図に示
したように、電極１５に直流電源Ｅを接続するとともに
、電極１４を抵抗ｒを介して接地し、さらに抵抗ｒと電
極１４の接続部分をタイヤ横力検出回路１３に接続しで
ある。Here, the pressure-sensitive conductive rubber 12 has a property that its resistance value changes approximately in inverse proportion to the pressure applied from the outside. here,
In order to detect the resistance value of the pressure-sensitive conductive rubber I2, as shown in FIG. The connecting portion is connected to the tire lateral force detection circuit 13.
このため、タイヤ横力を受けて感圧導電ゴム１２の抵抗
値が変化すると、抵抗ｒの両端にかかる電圧Ｖが変化し
、タイヤ横力検出回路Ｉ３によって感圧導電ゴムＩ２の
抵抗値変化が検出される。Therefore, when the resistance value of the pressure-sensitive conductive rubber 12 changes due to tire lateral force, the voltage V applied to both ends of the resistor r changes, and the tire lateral force detection circuit I3 detects the change in the resistance value of the pressure-sensitive conductive rubber I2. Detected.
ここで、感圧導電ゴ１４１２の抵抗値をＲとすると、
１（＝（Ｅ／Ｖ−１）ｒ
であり、タイヤ横力Ｆと抵抗値Ｒが反比例するため、
Ｆ＝に／ （Ｅ／Ｖ −１） ｒ
として検出されることになる。ただし、ｋは定数で、使
用する感圧導電ゴム１２に固有の値をとる。Here, if the resistance value of the pressure-sensitive conductive rubber 1412 is R, then 1(=(E/V-1)r), and since the tire lateral force F and the resistance value R are inversely proportional, F=/(E/ V −1) r However, k is a constant and takes a value specific to the pressure-sensitive conductive rubber 12 used.
こうしてタイヤ横力検出回路１３によって検出されたタ
イヤ横力Ｆは、一定の安全基準と常に比較され、例えば
第２図に一点鎖線で示したように、タイヤ６が側方に膨
出し、タイヤ横力Ｆが安全基準を越える場合は、エンジ
ン出力を自動的に抑制することで、車両の横滑り事故を
未然に防止することができる。In this way, the tire lateral force F detected by the tire lateral force detection circuit 13 is constantly compared with a certain safety standard. If the force F exceeds the safety standard, the engine output is automatically suppressed to prevent a skidding accident of the vehicle.
このように、上記タイヤ横力センサ１１は、ホイール３
に嵌合するタイヤ６の側壁部分に、ホイール３の外周に
沿って感圧導電ゴム１２を環状に当接保持し、この感圧
導電ゴムＩ２の抵抗値Ｒから、タイヤ横力検出回路１３
がタイヤ横力Ｆを電気的に検出する構成としたから、タ
イヤ６の接地部分に関係なく、常時タイヤ横力Ｆを検出
することができ、また感圧導電ゴム１２の抵抗値にもと
づいてタイヤ横力Ｆを検出するため、ただちにタイヤ検
力Ｆの変化を検出することができ、タイヤ横力Ｆの異常
検知とともに、瞬時にしてエンジン出力を抑制し、タイ
ヤ６の路面グリップ劣化に伴う車両の横滑り事故を未然
に防止することができる。In this way, the tire lateral force sensor 11
A pressure-sensitive conductive rubber 12 is annularly held in contact with the side wall portion of the tire 6 that fits along the outer periphery of the wheel 3, and from the resistance value R of this pressure-sensitive conductive rubber I2, the tire lateral force detection circuit 13
Since the structure is such that the tire lateral force F is electrically detected, the tire lateral force F can be detected at all times regardless of the contact area of the tire 6, and the tire lateral force F can be detected at all times regardless of the contact area of the tire 6. Since the lateral force F is detected, it is possible to immediately detect a change in the tire force F, and in addition to detecting an abnormality in the tire lateral force F, the engine output is instantly suppressed to prevent the vehicle from deteriorating due to the deterioration of the road surface grip of the tires 6. Skidding accidents can be prevented.
なお、上記実施例では、一対の電極１４．１５により一
箇所でタイヤ横力を検出する構成とじたが、第４．５図
に示したタイヤ横力センサ２１のごとく、幅をもった感
圧導電ゴム１２に、電極対１４．１５を複数組み幅方向
に並設し、タイヤ６を半径方向の複数箇所で横力検出す
る構成とすることも可能である。その場合、前記実施例
に比較してタイヤ横力の分布状態がよりはっきりと判る
ので、横滑りの危険を、より確実に事前検知することが
できる。In the above embodiment, the tire lateral force is detected at one location using the pair of electrodes 14 and 15, but the tire lateral force sensor 21 shown in FIG. It is also possible to arrange a plurality of pairs of electrodes 14, 15 in parallel in the width direction on the conductive rubber 12, and to detect lateral force on the tire 6 at a plurality of locations in the radial direction. In this case, the distribution state of the tire lateral force can be more clearly seen than in the embodiment described above, so that the risk of skidding can be detected in advance more reliably.
［発明の効果コ
以上説明したように、この発明は、ホイールに嵌合する
タイヤの側壁部分に、ホイールの外周に沿って感圧導電
ゴムを環状に当接保持し、この感圧導電ゴムの抵抗値か
ら、タイヤ横力を電気的に検出する構成としたから、タ
イヤの接地部分に関係なく、常時タイヤ横力を検出する
ことができ、また感圧導電ゴムの抵抗値にもとづいてタ
イヤ横力を検出するため、ただちにタイヤ横力の変化を
検出することができ、タイヤ横力の異常検知とともに、
瞬時にしてエンジン出力を抑制し、タイヤの路面グリッ
プ劣化に伴う車両の横滑り事故を未然に防止することが
できる等の優れた効果を奏する。[Effects of the Invention] As explained above, the present invention includes a pressure-sensitive conductive rubber that is annularly held in contact with the side wall portion of a tire fitted to a wheel along the outer periphery of the wheel. Since the tire lateral force is electrically detected from the resistance value, the tire lateral force can be detected at all times regardless of the tire's contact area, and the tire lateral force can be detected based on the resistance value of the pressure-sensitive conductive rubber. Since it detects force, changes in tire lateral force can be detected immediately, and in addition to detecting abnormalities in tire lateral force,
It has excellent effects such as being able to instantly suppress engine output and prevent vehicle skidding accidents caused by deterioration of tire road grip.
第１図は、この発明のタイヤ横力センサの一実施例を示
す斜視図、第２，３図は、それぞれ第１図に示したタイ
ヤ横力センサの縦断面図及び回路図、第４．５図は、こ
の発明のタイヤ横力センサの他の実施例を示す縦断面図
及び回路図、第６゜７図は、それぞれ従来のタイヤ横力
センサの一例を示す正面図及びタイヤ部分の縦断面図で
ある。
３８０．ホイール、６．、、タイヤ、１１゜２１、、、
タイヤ横カセンサ、１２．．．．感圧導電ゴム、１３．
、、タイヤ横力検出回路。FIG. 1 is a perspective view showing an embodiment of the tire lateral force sensor of the present invention, FIGS. 2 and 3 are a longitudinal cross-sectional view and a circuit diagram of the tire lateral force sensor shown in FIG. 1, respectively, and FIG. 5 is a longitudinal sectional view and a circuit diagram showing another embodiment of the tire lateral force sensor of the present invention, and FIGS. 6 and 7 are a front view and a longitudinal sectional view of the tire portion, respectively, showing an example of a conventional tire lateral force sensor. It is a front view. 380. Wheel, 6. ,, Tire, 11°21,,,
Tire lateral force sensor, 12. ．． ．． ．． Pressure-sensitive conductive rubber, 13.
,, Tire lateral force detection circuit.
Claims (1)
の外周に沿って環状に当接保持した感圧導電ゴムと、こ
の感圧導電ゴムの抵抗値から、タイヤを側方に変形せん
とするタイヤ横力を電気的に検出するタイヤ横力検出回
路からなるタイヤ横力センサ。A pressure-sensitive conductive rubber is annularly held in contact with the side wall of the tire that fits on the wheel along the outer periphery of the wheel, and the resistance of this pressure-sensitive conductive rubber prevents the tire from deforming laterally. A tire lateral force sensor consisting of a tire lateral force detection circuit that electrically detects lateral force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62077275A JPS63242704A (en) | 1987-03-30 | 1987-03-30 | Tire lateral force sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62077275A JPS63242704A (en) | 1987-03-30 | 1987-03-30 | Tire lateral force sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63242704A true JPS63242704A (en) | 1988-10-07 |
Family
ID=13629307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62077275A Pending JPS63242704A (en) | 1987-03-30 | 1987-03-30 | Tire lateral force sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63242704A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006208052A (en) * | 2005-01-25 | 2006-08-10 | Bridgestone Corp | Distortion sensor for rubber article |
-
1987
- 1987-03-30 JP JP62077275A patent/JPS63242704A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006208052A (en) * | 2005-01-25 | 2006-08-10 | Bridgestone Corp | Distortion sensor for rubber article |
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