JPS59183132A - Temperature and abrasion sensor for brake - Google Patents

Temperature and abrasion sensor for brake

Info

Publication number
JPS59183132A
JPS59183132A JP5813383A JP5813383A JPS59183132A JP S59183132 A JPS59183132 A JP S59183132A JP 5813383 A JP5813383 A JP 5813383A JP 5813383 A JP5813383 A JP 5813383A JP S59183132 A JPS59183132 A JP S59183132A
Authority
JP
Japan
Prior art keywords
brake
sensor
brake lining
temperature
sensitive ferrite
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.)
Granted
Application number
JP5813383A
Other languages
Japanese (ja)
Other versions
JPH0381019B2 (en
Inventor
Takashi Tamai
玉井　孝
Shigefumi Tomiyama
冨山　重文
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP5813383A priority Critical patent/JPS59183132A/en
Publication of JPS59183132A publication Critical patent/JPS59183132A/en
Publication of JPH0381019B2 publication Critical patent/JPH0381019B2/ja
Granted legal-status Critical Current

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
    • 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
    • F16D2066/001—Temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)
  • Braking Arrangements (AREA)

Abstract

PURPOSE:To form a sensor of a simple structure at a low cost, which has functions of detecting an abnormal temperature of brake oil with a thermo-sensitive ferrite, and disposing one or more among a lead switch, a permanent magnet, and a thermo-sensitive ferrite on a movable piece to detect the abrasion limit of a brake lining by utilizing the movement of a piston caused by abrasion of the brake lining. CONSTITUTION:A sensor 11 comprising a thermal lead switch is disposed at a predetermined position of a wheel cylinder portion of a brake. The sensor 11 comprises a lead switch 13 disposed in a case 17 and a movable piece 12 where a permanent magnet 14 and a thermo-sensitive ferrite 15 are incorporated to be integral therewith. An abnormal temperature of brake oil is detected from that the lead switch 13 becomes an open state by utilizing Curie point of the thermo- sensitive ferrite 15. With the advance of a piston 4, the movable piece 12 is pressed to be lowered by a coiled spring 16, so that the permanent magnet 14 and the thermo-sensitive ferrite 15 are separated from the vicinity of the lead switch 13. Thus, the abrasion limit of a brake lining is detected.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は自動車などのブレーキ安全装置に関するもので
、ブレーキオイルの異常温度上昇の検知とブレーキライ
ニングの摩耗限界の検知に適用されるブレーキの温度、
摩耗度センサに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a brake safety device for automobiles, etc., and is applied to the detection of abnormal temperature rise of brake oil and the wear limit of brake lining.
The present invention relates to a wear sensor.

従来例の構成とその問題点 従来例としては第１図に示すように、センサ７をブレー
キライニング１の所定の箇所に設置し、ブレーキライニ
ング１の摩耗限界をこのセンサ７で検知する方法が知ら
れている０このセンサ７の構造は第２図に示すように、
金属線８０両端を外部引出線１０ａ、１０ｂに接続し、
これらを樹脂ｅ内に設置した構造である。そして、この
センサ７をブレーキライニング１の裏金２を介してブレ
ーキライニング１内に先端部を埋込むような形で配置し
ていることにより、ブレーキライニング１の摩耗に応じ
てセンサγの先端部も一緒に削られていき、ひいては樹
脂ｅ内に設けた金属線８が断線することにより摩耗限界
を検知する構成となっている。なお、第１図で３はホイ
ールシリンダ部、４はブレーキライニング１の摩耗度合
に応じて移ａするピストン、６はプレーキオイノペらは
ロータである。また、人はブレーキライニング１の初期
の位置、Ｂは摩耗限界時の位置を示している。Structure of the conventional example and its problems As shown in FIG. 1, a conventional example is a method in which a sensor 7 is installed at a predetermined location on the brake lining 1 and the wear limit of the brake lining 1 is detected by the sensor 7. The structure of this sensor 7 is as shown in FIG.
Connect both ends of the metal wire 80 to the external lead wires 10a and 10b,
This is a structure in which these are installed in resin e. By arranging this sensor 7 in such a way that its tip is embedded in the brake lining 1 via the back metal 2 of the brake lining 1, the tip of the sensor γ also changes as the brake lining 1 wears. The structure is such that the wear limit is detected when the metal wire 8 provided in the resin e is cut off together and eventually breaks. In FIG. 1, 3 is a wheel cylinder, 4 is a piston that moves according to the degree of wear of the brake lining 1, and 6 is a rotor. Further, ``person'' indicates the initial position of the brake lining 1, and ``B'' indicates the position at the wear limit.

しかし、この方法はライニングの摩耗限界のみを検知す
るものであシ、しかも使い捨てのセンサであるという欠
点を有していた。However, this method only detects the wear limit of the lining and has the disadvantage that it is a disposable sensor.

発明の目的 本発明はブレーキライニングの摩耗限界の検知と、ブレ
ーキオイルの異常温度上昇の検知の両機能を有するブレ
ーキの温度、摩耗度センサを提供しようとするものであ
る。OBJECTS OF THE INVENTION The present invention provides a brake temperature and wear degree sensor that has both the functions of detecting the wear limit of a brake lining and detecting an abnormal temperature rise of brake oil.

発明の構成 本発明におけるブレーキの温度、摩耗度センサはブレー
キのホイールシリンダ部の所定の箇所にサーマルリード
スイッチからなるセンサを設置しサーマルリードスイッ
チの構成部材である感温フェライトのキューリ一点によ
シブレーキオイルの異常温度上昇を検知すると同時に、
サーマルＩＪ　−ドスイソチの構成部材であるリードス
イッチ、永久磁石、感温フェライトの少なくとも１つ以
上をブレーキライニングの摩耗により移動するピストン
に押圧された移動可能な可動片に設置し、ブレーキライ
ニングが摩耗限界にくるとこの可動片が移動し、リード
スイッチを開放または短絡させることにより摩耗限界を
検知できる機構を有して構成される。Structure of the Invention The brake temperature and wear rate sensor of the present invention includes a sensor consisting of a thermal reed switch installed at a predetermined location in the wheel cylinder of the brake, and a single curie point of temperature-sensitive ferrite which is a component of the thermal reed switch. At the same time as detecting abnormal temperature rise of brake oil,
Thermal IJ - At least one of the reed switch, permanent magnet, and temperature-sensitive ferrite, which are the components of Dosu Isochi, is installed on a movable piece that is pressed by a piston that moves due to wear of the brake lining, and the brake lining reaches its wear limit. The movable piece moves when the reed switch reaches a certain point, and the wear limit is detected by opening or shorting the reed switch.

実施例の説明 以下、本発明の一実施例について第３図とともに説明す
る。まず、ブレーキのホイールシリンダ部の所定の位置
にサーマルリードスイッチからなるセンサ１１が設置さ
れている。このセンサ１１の構造は第４図に示すように
サーマルリードスイッチの構成部材であるリードスイッ
チ１３をセンサケース１７内に設置し、さらに可動片１
２にサーマルリードスイッチの構成部材である永久磁石
１４、感温フェライト１５を一体にして組み込み、ピス
トン４がブレーキライニング１の摩耗限界まで移動した
とき、コイルバネ１６により可動片１２が移動する構造
になっている〇 次に、このセンサの動作特性について説明する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. First, a sensor 11 consisting of a thermal reed switch is installed at a predetermined position in the wheel cylinder portion of the brake. The structure of this sensor 11 is as shown in FIG.
A permanent magnet 14 and a temperature-sensitive ferrite 15, which are components of a thermal reed switch, are integrated into the brake lining 2, and when the piston 4 moves to the wear limit of the brake lining 1, the movable piece 12 is moved by a coil spring 16. Next, the operating characteristics of this sensor will be explained.

このセンサの取付場所は第４図に示すようにブレーキラ
イニング１を駆動させるピストン４の側面部で、しかも
ブレーキライニング１の摩耗にょシピストン４が前方に
移動し１ていくため、ブレーキライニング１の摩耗限界
までピストン４が前方に移動した時、可動片１２がコイ
ルバネ１６に押され下方に移動する位置に設置する。そ
し、て、ブレーキライニング１が摩耗限界になる丑では
ピストン４の側面で可動片１２が上方に押されているた
め、可動片１２に設けた永久磁石１４と感温フェライト
１５Ｉ″ｉリードスイツチ１３の近傍にあシ、リードス
イッチ１３はショート状態にある。この時、ブレーキオ
イル６の異常温度の検知は感温フェライト１５のキュー
リ一温度を利用して所定の温度以上に異常温度上昇した
場合、リードスイッチ１３がオープン状態になることに
ょシ検出することができる。また、ブレーキライニング
１が摩耗限界になると、ピストン４が前方に移動するた
め、可動片１２がコイルバネ１６に押されて下方に移動
し、可動片１２に設けた永久磁石１４と感温フェライト
１５がリードスイッチ１３の近傍よシ離れるため、リー
ドスイッチ１３はショート状態がちオープン状態になる
ことによシ、ブレーキライニング１の摩耗限界を検出す
ることができる。As shown in Fig. 4, this sensor is installed on the side of the piston 4 that drives the brake lining 1, and as the piston 4 moves forward, the brake lining 1 wears out. The movable piece 12 is set at a position where it is pushed by a coil spring 16 and moves downward when the piston 4 moves forward to the limit. Then, when the brake lining 1 reaches its wear limit, the movable piece 12 is pushed upward by the side of the piston 4, so the permanent magnet 14 provided on the movable piece 12 and the temperature-sensitive ferrite 15I''i reed switch 13 , the reed switch 13 is in a short-circuit state. At this time, abnormal temperature of the brake oil 6 is detected using the Curie temperature of the temperature-sensitive ferrite 15. If the temperature rises abnormally above a predetermined temperature, It is possible to detect when the reed switch 13 is in the open state.Furthermore, when the brake lining 1 reaches its wear limit, the piston 4 moves forward, so the movable piece 12 is pushed by the coil spring 16 and moves downward. However, since the permanent magnet 14 and temperature-sensitive ferrite 15 provided on the movable piece 12 are separated from the vicinity of the reed switch 13, the reed switch 13 tends to be short-circuited and becomes open, thereby reducing the wear limit of the brake lining 1. can be detected.

ここで、センサの内部構成については本実施例にとられ
れることなく、リードスイット１３、永久磁石１４、感
温フェライト１５の少なくとも１つ以上を、可動片１２
に設置することによシ、同様の検出を行う構成も別途設
計することができるものである。なお、第４図でＣ，Ｄ
はブレーキライニング１が初期時、摩耗限界時のピスト
ン４の位置を示している。Here, the internal configuration of the sensor is not limited to this embodiment, and at least one of the reed switch 13, the permanent magnet 14, and the temperature-sensitive ferrite 15 is connected to the movable piece 12.
By installing the sensor in the same location, a configuration for performing similar detection can be designed separately. In addition, C and D in Figure 4
indicates the position of the piston 4 when the brake lining 1 is at its initial stage and at the wear limit.

発明の効果 （１）本発明のセンサはサーマルリードスイッチの構成
部材であるリードスイッチ、永久磁石。Effects of the Invention (1) The sensor of the present invention is a reed switch and a permanent magnet that are constituent members of a thermal reed switch.

感温フェライトとブレーキライニングの摩耗限界時に移
動する可動片との適当な組み合わせによシ、ブレーキオ
イルの異常温度を検知する機能と、ブレーキライ・ニン
グの摩耗限界を検知する機能との両機能を兼ね備えたセ
ンサとして、極めて簡単な構成により安価に提供するこ
とができる〇 （１１）　　ブレーキライニングの摩耗限界を、ピスト
ンに押圧した可動片の移動により検出できるので、ブレ
ーキライニングが摩耗し取り換える際にも、センサは使
い捨てでなく半永久的に使用できる。Through an appropriate combination of temperature-sensitive ferrite and a movable piece that moves when the brake lining reaches its wear limit, it has both the function of detecting the abnormal temperature of the brake oil and the function of detecting the wear limit of the brake lining. As a sensor with both functions, it can be provided at low cost due to its extremely simple configuration.〇(11) The wear limit of the brake lining can be detected by the movement of the movable piece pressed against the piston, so even when the brake lining wears out and needs to be replaced. , the sensor is not disposable but can be used semi-permanently.

（ｉｌｌ）　　ブレーキオイルの異常温度上昇ならびに
ブレーキライニングの摩耗限界をランプ表示などにより
運転者に知らせる場合、このセンサの出力は０Ｎ−ＯＦ
Ｆの出力であるため警報または表示回路の構成が簡単に
でき、安価で実用的な検知システムを提供することがで
きる０(ill) When informing the driver of the abnormal temperature rise of the brake oil and the wear limit of the brake lining through a lamp display, the output of this sensor is 0N-OF.
Since the output is F, alarm or display circuits can be easily configured, and an inexpensive and practical detection system can be provided.

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

第１図、第２図は従来のブレーキライニングの摩耗限界
を検知するセンサを示す構成図、第３図。 第４図は本発明のセンサの取付状態ならびに内部構成を
示す構成図である。1 and 2 are configuration diagrams showing a conventional sensor for detecting the wear limit of a brake lining, and FIG. 3 is a configuration diagram. FIG. 4 is a configuration diagram showing the installed state and internal configuration of the sensor of the present invention.

Claims (1)

【特許請求の範囲】[Claims] ブレーキのホイールシリンダ部の所定の箇所にサーマル
リードスイッチからなるセンサを設置し、前記サーマル
リードスイッチの構成部材である感温フェライトによシ
ブレーキオイルの温度を検知し、かつ前記サーマルリー
ドスイッチの構成部材であるリードスイッチ、永久磁石
、感温フェライトの少なくとも１つ以上を、ブレーキラ
イニングの摩耗によ如移動するピストンに押圧された移
動可能な可動片に設置し、前記可動片の移動により前記
リードスイッチを開放または短絡させる構成としたこと
を特徴とするブレーキの温度、摩耗度センサ０A sensor consisting of a thermal reed switch is installed at a predetermined location in the wheel cylinder portion of the brake, and the temperature of the brake oil is detected by a temperature-sensitive ferrite that is a component of the thermal reed switch, and the configuration of the thermal reed switch is At least one of the members, such as a reed switch, a permanent magnet, and a temperature-sensitive ferrite, is installed on a movable piece that is pressed by a piston that moves due to wear of the brake lining, and when the movable piece moves, the reed Brake temperature and wear sensor 0, characterized in that the switch is configured to open or short-circuit.
JP5813383A 1983-04-01 1983-04-01 Temperature and abrasion sensor for brake Granted JPS59183132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5813383A JPS59183132A (en) 1983-04-01 1983-04-01 Temperature and abrasion sensor for brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5813383A JPS59183132A (en) 1983-04-01 1983-04-01 Temperature and abrasion sensor for brake

Publications (2)

Publication Number Publication Date
JPS59183132A true JPS59183132A (en) 1984-10-18
JPH0381019B2 JPH0381019B2 (en) 1991-12-26

Family

ID=13075479

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5813383A Granted JPS59183132A (en) 1983-04-01 1983-04-01 Temperature and abrasion sensor for brake

Country Status (1)

Country Link
JP (1) JPS59183132A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360438U (en) * 1989-10-12 1991-06-13
KR100397941B1 (en) * 2001-07-10 2003-09-19 기아자동차주식회사 Brake lining wear sensing system
CN107560751A (en) * 2017-07-18 2018-01-09 杨志强 A kind of elastic contact type wireless temperature measurement mechanism
CN107763123A (en) * 2017-10-26 2018-03-06 安徽农业大学 A kind of temperature-measuring bolt for being used to measure vehicle brake fluid temperature

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0360438U (en) * 1989-10-12 1991-06-13
KR100397941B1 (en) * 2001-07-10 2003-09-19 기아자동차주식회사 Brake lining wear sensing system
CN107560751A (en) * 2017-07-18 2018-01-09 杨志强 A kind of elastic contact type wireless temperature measurement mechanism
CN107763123A (en) * 2017-10-26 2018-03-06 安徽农业大学 A kind of temperature-measuring bolt for being used to measure vehicle brake fluid temperature

Also Published As

Publication number Publication date
JPH0381019B2 (en) 1991-12-26

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