JPH06185555A - Probe for detecting wear - Google Patents
Probe for detecting wearInfo
- Publication number
- JPH06185555A JPH06185555A JP21913992A JP21913992A JPH06185555A JP H06185555 A JPH06185555 A JP H06185555A JP 21913992 A JP21913992 A JP 21913992A JP 21913992 A JP21913992 A JP 21913992A JP H06185555 A JPH06185555 A JP H06185555A
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- probe
- detector
- wear
- insulator
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
- F16D66/021—Apparatus for indicating wear using electrical detection or indication means
- F16D66/022—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness
- F16D66/023—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness directly sensing the position of braking members
- F16D66/024—Sensors mounted on braking members adapted to contact the brake disc or drum, e.g. wire loops severed on contact
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動車ブレーキ用の
ブレーキライニングなどの電気的な摩耗検出用プローブ
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wear detecting probe such as a brake lining for automobile brakes.
【０００２】[0002]
【従来の技術】自動車ブレーキ等のブレーキパッドにお
ける摩擦材（ライニング）の摩耗検出法の１つにプロー
ブと呼ばれる検出器を用いる電気的な検出法がある。こ
の方法では、プローブを摩擦材の摩耗限界位置に挿入
し、摩擦材が摩耗限界に至ったときに電気信号を発す
る。その電気信号は、ディスクとの接触により電位差の
発生、電位差の消失、接地による変化などを利用してい
る。2. Description of the Related Art One of the methods for detecting wear of a friction material (lining) in a brake pad such as an automobile brake is an electrical detection method using a detector called a probe. In this method, the probe is inserted into the wear limit position of the friction material, and an electric signal is emitted when the friction material reaches the wear limit. The electric signal utilizes generation of a potential difference due to contact with the disk, disappearance of the potential difference, change due to grounding, and the like.
【０００３】上記電気的な検出法に用いられる断線式の
摩耗検出器を図２に示す。図示のように、この摩耗検出
器１は、Ｕ字状のリード線Ｘを樹脂モールドしたもので
あり、ライニング２に裏板３を張り合せたブレーキパッ
ドの適宜位置にリテイナ４を介して取り付けられる。
（ａ）に一点鎖線で示す位置までライニング２が摩耗す
ると、それに伴って検出器の頭部も摩耗し、リード線Ｘ
が露出する。そして、さらに摩耗するとリード線が断線
し電位が生じて警報を発する。A disconnection type wear detector used in the above electrical detection method is shown in FIG. As shown in the figure, this wear detector 1 is made by resin-molding a U-shaped lead wire X, and is attached to an appropriate position of a brake pad in which a back plate 3 is attached to a lining 2 via a retainer 4. .
When the lining 2 is worn to the position shown by the alternate long and short dash line in (a), the head of the detector is also worn, and the lead wire X
Is exposed. Then, when it further wears, the lead wire is broken and an electric potential is generated to issue an alarm.
【０００４】[0004]
【発明が解決しようとする課題】ところで、上記リード
線は、一般に導体の周りを絶縁体で覆う構造であり、こ
のリード線を検出器内でＵ字状に曲げて樹脂モールドし
ている。リード線の絶縁体の耐熱温度は２００℃程度で
ある。By the way, the above-mentioned lead wire generally has a structure in which a conductor is covered with an insulator, and the lead wire is bent into a U-shape in a detector for resin molding. The heat resistant temperature of the insulator of the lead wire is about 200 ° C.
【０００５】しかし、ブレーキ制動時のロータ温度は５
００〜６００℃まで上昇することもあり、制動条件によ
っては絶縁体が溶けおちて絶縁体の厚み分だけ導体が陥
没し、断線感知位置が不安定となることがある。However, the rotor temperature during braking is 5
The temperature may rise to 00 to 600 ° C., and depending on the braking condition, the insulator may melt and the conductor may be depressed by the thickness of the insulator, and the disconnection sensing position may become unstable.
【０００６】又、図２の（ｂ）、（ｃ）に示すように、
温度条件によっては高温時にはＰ点で絶縁体が溶けてな
くなり、あるいは低温時に絶縁体がＰ’点に残っている
が断線するなどにより断線位置が不安定となることがあ
る。Further, as shown in FIGS. 2 (b) and 2 (c),
Depending on the temperature conditions, the insulator may melt and disappear at point P at high temperature, or the insulator may remain at point P ′ at low temperature, but the disconnection position may become unstable due to disconnection.
【０００７】この発明は、上述した従来の摩耗検出プロ
ーブの問題点に留意して、検出器を構成する樹脂モール
ド内に埋込まれるリード線のＵ字状屈曲部絶縁体を予め
取り除いておくことにより高温時に絶縁体が溶け落ちて
断線感知位置が不安定とならないようにして摩耗検出信
号の信頼性を向上させた摩耗検出用プローブを提供する
ことを課題とする。In the present invention, the U-shaped bent portion insulator of the lead wire embedded in the resin mold constituting the detector is removed in advance, paying attention to the above-mentioned problems of the conventional wear detecting probe. Therefore, it is an object of the present invention to provide a wear detection probe in which the reliability of the wear detection signal is improved by preventing the insulator from melting down at high temperatures and making the disconnection sensing position unstable.
【０００８】[0008]
【課題を解決するための手段】上記課題を解決する手段
としてこの発明は、リード線をＵ字状に曲げて一体成形
した樹脂モールドから成り、リード線のＵ字状屈曲部は
絶縁体を予め取り除き導体のみとしてモールドして成る
摩耗検出用プローブの構成としたのである。As a means for solving the above problems, the present invention comprises a resin mold in which a lead wire is bent in a U-shape and integrally molded, and the U-shaped bent portion of the lead wire is made of an insulator in advance. The probe for wear detection is formed by molding only the removed conductor.
【０００９】[0009]
【作用】上記の構成としたこの発明の摩耗検出用プロー
ブは、摩耗検出信号の信頼性を向上させたものとして作
用する。ブレーキ制動時にパッド摩耗により高温となる
と共にリード線が断線しても、リード線は予めＵ字状部
の絶縁体が取り除かれているから絶縁体の溶け落ちによ
りリード線の陥没などの不都合は生じない。従ってリー
ド線による断線感知位置が一定し、信頼性が向上する。The probe for wear detection of the present invention having the above-described structure acts as an improved probe of the wear detection signal. Even if the lead wire becomes broken due to pad wear during braking and the lead wire is broken, the U-shaped insulator is removed from the lead wire in advance, which causes problems such as sinking of the lead wire due to burnout of the insulator. Absent. Therefore, the disconnection sensing position by the lead wire is constant, and the reliability is improved.
【００１０】[0010]
【実施例】以下この発明の実施例について図面を参照し
て説明する。図１は実施例の摩耗検出用プローブの概略
図である。従来例と同様に、この実施例の検出器１もラ
イナ２に裏板３を張り合せたブレーキパッドの適宜位置
にリテイナ４を介して取り付けられている。検出器１
は、内部にリード線ＸをＵ字状に曲げて一体成形した樹
脂モールドから成り、リード線ＸのＵ字状屈曲部は絶縁
体を予め取り除き導体Ｙのみとしてモールドされてい
る。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a wear detecting probe of the embodiment. Similarly to the conventional example, the detector 1 of this embodiment is also mounted via a retainer 4 at an appropriate position of a brake pad in which a back plate 3 is attached to a liner 2. Detector 1
Is made of a resin mold in which the lead wire X is bent in a U-shape and integrally molded. The U-shaped bent portion of the lead wire X is molded by removing the insulator in advance and using only the conductor Y.
【００１１】上記の構成とした実施例の検出器は、通常
は従来のものと同様にリード線Ｘが断線しない限り電圧
の変動は生じないから何ら検出動作はしない。しかし、
ディスクブレーキを繰り返し作動させ、ブレーキパッド
のライニング２が段々と摩耗して来ると、導体Ｙが露出
し断線することとなる。この場合、ブレーキ制動時のロ
ータが５００〜６００℃位いまで温度上昇したとして
も、検出器１の樹脂モールド内に埋込まれているリード
線はＵ字状の屈曲部で予め導体Ｙのみとしてあるから、
温度による絶縁体の溶け落ちがなくなる。従って導体Ｙ
が陥没することがなくなりリード線Ｘは安定して検出器
１内に保持される。このため断線感知位置が安定する。The detector of the embodiment having the above-mentioned structure does not perform any detecting operation, as in the conventional case, since the voltage does not fluctuate unless the lead wire X is broken. But,
When the disc brake is repeatedly operated and the lining 2 of the brake pad is gradually worn, the conductor Y is exposed and the wire is broken. In this case, even if the temperature of the rotor during braking is increased to about 500 to 600 ° C., the lead wire embedded in the resin mold of the detector 1 is a U-shaped bent portion and only the conductor Y is used in advance. because there is,
Eliminates burn-through of the insulator due to temperature. Therefore conductor Y
Is not depressed and the lead wire X is stably held in the detector 1. Therefore, the disconnection sensing position is stable.
【００１２】なお、摩耗による断線の感知は、通常の場
合と同様にリード線に加えられている電圧の変化によっ
て検知される。The detection of disconnection due to wear is detected by a change in the voltage applied to the lead wire as in the usual case.
【００１３】[0013]
【効果】以上詳細に説明したように、この発明の摩耗検
出用プローブは一体成形した樹脂モールド内でリード線
のＵ字状屈曲位置の絶縁体を予め取り除いてモールドし
ているから、ブレーキ制動時の高温でリード線の絶縁体
が溶け落ちることがなく、断線感知位置が一定し、従っ
て摩耗検出信号の信頼性が向上するという効果がある。As described above in detail, since the wear detecting probe of the present invention is molded by removing the insulator at the U-shaped bending position of the lead wire in advance in the integrally molded resin mold, it is possible to perform braking. There is an effect that the insulator of the lead wire does not melt down at a high temperature and the disconnection sensing position is constant, and therefore the reliability of the wear detection signal is improved.
【図１】実施例の摩耗検出用プローブの概略構成図FIG. 1 is a schematic configuration diagram of a wear detection probe according to an embodiment.
【図２】従来例の摩耗検出用プローブの概略構成及び断
線状態の説明図FIG. 2 is an explanatory diagram of a schematic configuration and a broken state of a conventional wear detection probe.
１ 検出器 ２ ライニング ３ 裏板 ４ リテイナ Ｘ リード線 Ｙ 導体 1 Detector 2 Lining 3 Back plate 4 Retainer X Lead wire Y Conductor
Claims (1)
樹脂モールドから成り、リード線のＵ字状屈曲部は絶縁
体を予め取り除き導体のみとしてモールドして成る摩耗
検出用プローブ。1. A probe for wear detection, comprising a resin mold integrally formed by bending a lead wire into a U shape, wherein the U-shaped bent portion of the lead wire is formed by removing an insulator in advance and molding the conductor only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21913992A JPH06185555A (en) | 1992-08-18 | 1992-08-18 | Probe for detecting wear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21913992A JPH06185555A (en) | 1992-08-18 | 1992-08-18 | Probe for detecting wear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06185555A true JPH06185555A (en) | 1994-07-05 |
Family
ID=16730839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21913992A Pending JPH06185555A (en) | 1992-08-18 | 1992-08-18 | Probe for detecting wear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06185555A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557195A (en) * | 2016-11-30 | 2018-06-20 | Jaguar Land Rover Ltd | Controller for a braking system of a vehicle |
-
1992
- 1992-08-18 JP JP21913992A patent/JPH06185555A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557195A (en) * | 2016-11-30 | 2018-06-20 | Jaguar Land Rover Ltd | Controller for a braking system of a vehicle |
| GB2558770A (en) * | 2016-11-30 | 2018-07-18 | Jaguar Land Rover Ltd | Controller for a braking system of a vehicle |
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