JPH05321964A - Air brake - Google Patents
Air brakeInfo
- Publication number
- JPH05321964A JPH05321964A JP15580492A JP15580492A JPH05321964A JP H05321964 A JPH05321964 A JP H05321964A JP 15580492 A JP15580492 A JP 15580492A JP 15580492 A JP15580492 A JP 15580492A JP H05321964 A JPH05321964 A JP H05321964A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- wear
- lining
- brake shoe
- abrasion
- 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
- F16D66/025—Apparatus for indicating wear using electrical detection or indication means indicating that a lining is worn to minimum allowable thickness sensing the position of parts of the brake system other than the braking members, e.g. limit switches mounted on master cylinders
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
- F16D2125/22—Mechanical mechanisms converting rotation to linear movement or vice versa acting transversely to the axis of rotation
- F16D2125/28—Cams; Levers with cams
- F16D2125/30—Cams; Levers with cams acting on two or more cam followers, e.g. S-cams
-
- 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
- F16D2125/00—Components of actuators
- F16D2125/18—Mechanical mechanisms
- F16D2125/44—Mechanical mechanisms transmitting rotation
- F16D2125/56—Shafts for transmitting torque directly
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】本発明は、車両等に用いられるエ
アブレーキに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air brake used for vehicles and the like.
【０００２】[0002]
【従来の技術】従来のトラック等におけるエアブレーキ
では、ブレーキシューのライニングの摩耗がその限度に
達しているかどうかを目視にて行うようになっているた
め、その摩耗チェックが大層煩わしく、このことが上記
摩耗チェックの不徹底等の一因となって、ブレーキの性
能低下や極端な場合にはブレーキの破損を招き、とくに
重量物を搭載するトラック等の走行時に大きな危険を伴
うおそれがあった。2. Description of the Related Art Conventional air brakes for trucks and the like are designed to visually check whether or not the wear of the brake shoe lining has reached its limit. As a cause of incompleteness of the above-mentioned wear check, the performance of the brake may be deteriorated or the brake may be damaged in an extreme case, and there is a possibility of causing a great danger particularly when a truck carrying a heavy object is traveling.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、エアブレー
キにおいて、ブレーキシューのライニングの摩耗が限度
付近に達したとき、それを自動的に検出できるようにし
ようとするものである。SUMMARY OF THE INVENTION An object of the present invention is to make it possible to automatically detect when the wear of the brake shoe lining reaches a limit in an air brake.
【０００４】[0004]
【課題を解決するための手段】このため、本発明にかか
るエアブレーキは、ブレーキシューを拡開するＳカムの
駆動系統と固定部分との間に設置され上記ブレーキシュ
ーのライニングの摩耗がその限度付近に達したときブレ
ーキ非作動時における上記Ｓカム駆動系統の変位に応じ
て作動する摩耗検知部及び同摩耗検知部に接続された警
報装置を有し、上記摩耗検知部の作動により上記警報装
置が作動するように構成されている。For this reason, the air brake according to the present invention is installed between the drive system of the S-cam for expanding the brake shoe and the fixed portion, and the wear of the lining of the brake shoe is the limit. A wear detector that operates according to the displacement of the S-cam drive system when the brake is not activated when reaching the vicinity, and an alarm device connected to the wear detector, and the alarm device is activated by the operation of the wear detector. Are configured to operate.
【０００５】[0005]
【作用】従って、ブレーキシューのライニングの摩耗が
その限度付近に達したとき、ブレーキ非作動時における
Ｓカム駆動系統の変位に応じて摩耗検知部が作動するの
で、摩耗検知部に接続された警報装置によりブレーキシ
ューのライニングの摩耗が危険な域に到達していること
を自動的、かつ即時に警告することができる。Therefore, when the wear of the lining of the brake shoe reaches its limit, the wear detecting section operates in accordance with the displacement of the S-cam drive system when the brake is not operating. Therefore, the alarm connected to the wear detecting section is activated. The device can automatically and immediately warn that the wear of the brake shoe lining has reached a dangerous range.
【０００６】[0006]
【実施例】以下、図面に示す本発明の実施例について具
体的に説明する。図１において、トラック等のフルエア
オーバドラムブレーキにおける左右のブレーキシュー１
はアンカーピンによりアンカーブラケット等の固定部分
にそれぞれ下端が枢支されると共に、リターンスプリン
グ２により付勢されて両上端部間にＳカム３を挟みつけ
ている。Embodiments of the present invention shown in the drawings will be specifically described below. In FIG. 1, left and right brake shoes 1 in a full air overdrum brake for a truck or the like.
Has a lower end pivotally supported by a fixed portion such as an anchor bracket by an anchor pin, and is biased by a return spring 2 to sandwich the S cam 3 between both upper end portions.
【０００７】Ｓカム３のカムシャフト４は、図２に示さ
れているように、アンカーブラケット５の筒部６内にベ
アリング７を介して回動自在に支持され、端部にスラッ
クアジャスタ８が固定されていると共に、中間部の外周
面に突起９が形成されている。As shown in FIG. 2, the camshaft 4 of the S-cam 3 is rotatably supported in the tubular portion 6 of the anchor bracket 5 via a bearing 7, and has a slack adjuster 8 at its end. The projection 9 is formed on the outer peripheral surface of the intermediate portion while being fixed.
【０００８】他方、図３によく示されているように、カ
ムシャフト４の突起９と同一周面上のアンカーブラケッ
ト筒部６に突子１０が装着され、突子１０はコイルばね
１１により付勢されてカムシャフト４の周面上に押圧さ
れ、ハーネス１２の端子１３から小隙をおくように配置
されており、後記のように、カムシャフト４や突起９等
と共に摩耗検知部１４を構成している。また、ハーネス
１２はリレー１５を通じてキャブ内に設置された警報ブ
ザー及びまたは警報ランプの警報装置１６に接続され、
リレー１５はブレーキ作動時には電気回路を遮断すると
共に、適当な時間の遅延回路を内蔵している。On the other hand, as well shown in FIG. 3, the projection 10 is mounted on the anchor bracket cylinder portion 6 on the same peripheral surface as the projection 9 of the camshaft 4, and the projection 10 is attached by the coil spring 11. It is biased and pressed onto the peripheral surface of the camshaft 4, and is arranged so as to leave a small gap from the terminal 13 of the harness 12, and as will be described later, the wear detecting portion 14 is configured together with the camshaft 4, the projection 9, and the like. is doing. The harness 12 is connected to an alarm buzzer and / or an alarm device 16 of an alarm lamp installed in the cab through a relay 15.
The relay 15 shuts off the electric circuit when the brake is actuated and has a built-in delay circuit for an appropriate time.
【０００９】上記スラックアジャスタ８は従来と同様に
図示しないブレーキチャンバのプッシュロッドに先端が
連結されていて、ブレーキチャンバに圧縮エアが供給さ
れたとき、プッシュロッドによりスラックアジャスタ８
が押されてカムシャフト４がその軸回りに回転し、Ｓカ
ム３が回動することにより左右のブレーキシュー１が拡
開し、ブレーキシュー１のライニング１７がブレーキド
ラムに押しつけられてブレーキがかけられ、ブレーキの
作動によるライニング１７の摩耗に対しては、ブレーキ
の非作動時における上記ブレーキドラムとライニング１
７との間のクリアランスが一定となるように調節されて
いる。The slack adjuster 8 has a tip connected to a push rod of a brake chamber (not shown) as in the conventional case, and when compressed air is supplied to the brake chamber, the slack adjuster 8 is pushed by the push rod.
Is pressed to rotate the camshaft 4 about its axis, and the S-cam 3 is rotated to expand the left and right brake shoes 1, and the lining 17 of the brake shoe 1 is pressed against the brake drum to apply the brake. Therefore, with respect to the wear of the lining 17 due to the operation of the brake, the brake drum and the lining 1 when the brake is not operated
It is adjusted so that the clearance with 7 is constant.
【００１０】上記装置において、ブレーキシュー１のラ
イニング１７が全く摩耗していない場合には、カムシャ
フト４の突起９はブレーキ非作動時に図３のように横方
向に位置しているが、数多くのブレーキ作動によりライ
ニング１７が大きく摩耗してその摩耗限度付近に達する
と、ブレーキ非作動時におけるブレーキシュー１の大き
な外方拡開に応じたカムシャフト４の回転により、突起
９は図３の２点鎖線のように上方に変位し、ばね１１の
付勢力に抗して突子１０を押し上げるため、ハーネス１
２の端子１３が閉成されるので、リレー１５内の遅延回
路によりフラッタリングを防止しつつ警報装置１６を作
動させて、ライニング１７が危険な摩耗域に達している
ことを乗員に警告し、適切な処置を迅速に行って車両の
走行安全性を確保できるようになっている。In the above apparatus, when the lining 17 of the brake shoe 1 is not worn at all, the projection 9 of the camshaft 4 is located in the lateral direction as shown in FIG. 3 when the brake is not operated. When the lining 17 is greatly worn by the operation of the brake and reaches the vicinity of the wear limit, the protrusion 9 is formed at two points in FIG. 3 by the rotation of the camshaft 4 in response to the large outward expansion of the brake shoe 1 when the brake is not operated. The harness 1 is displaced upwards like a chain line to push up the protrusion 10 against the biasing force of the spring 11.
Since the second terminal 13 is closed, the delay circuit in the relay 15 prevents the fluttering and activates the alarm device 16 to warn the occupant that the lining 17 has reached a dangerous wear zone. Appropriate measures can be taken promptly to ensure the driving safety of the vehicle.
【００１１】なお、上記リレーはブレーキ作動時にも電
気回路を接続するようにして、ブレーキシューのライニ
ングの摩耗が限度に近づいたときにはブレーキをかける
度に摩耗検知部により警報装置を作動させ、ライニング
の摩耗が進んでいることを予め知らせることにより、一
層の安全性を図るように構成することもできるものであ
る。The relay is connected to an electric circuit even when the brake is operated, and when the wear of the lining of the brake shoe approaches the limit, the wear detector activates an alarm device each time the brake is applied to activate the alarm. It can be configured to further enhance safety by notifying in advance that wear is progressing.
【００１２】次に、図４に示す実施例においては、Ｓカ
ム２０のカムシャフト２１に取り付けられたスラックア
ジャスタ２２の先端に、ブレーキチャンバ２３のプッシ
ュロッド２４が枢着され、ブレーキチャンバ２３のダイ
アフラム２５の大気開放側に取り付けられてコイルばね
２６により付勢されたプレッシャプレート２７がプッシ
ュロッド２４の他端に連結されていると共に、ブレーキ
チャンバ２３のダイアフラム２５大気開放側に摩耗検知
部２８が取り付けられ、その端子２９がダイアフラム２
５に向かって突出している。Next, in the embodiment shown in FIG. 4, the push rod 24 of the brake chamber 23 is pivotally attached to the tip of the slack adjuster 22 attached to the cam shaft 21 of the S-cam 20, and the diaphragm of the brake chamber 23 is pivoted. A pressure plate 27 attached to the atmosphere opening side of 25 and urged by a coil spring 26 is connected to the other end of the push rod 24, and a wear detector 28 is attached to the diaphragm 25 atmosphere opening side of the brake chamber 23. And the terminal 29 is connected to the diaphragm 2
It projects toward 5.
【００１３】摩耗検知部２８は前記各実施例と同様にリ
レーを通じてキャブ内の図示しない警報装置に接続され
ていて、ブレーキシューのライニングの摩耗が進んでい
ないときは、図の右方から圧縮エアが供給されてダイア
フラム２５がストロークするにもかかわらず、プレッシ
ャプレート２７が摩耗検知部２８の端子２９に達しない
が、ブレーキシューのライニングの摩耗がその限度に近
づくと、ブレーキ非作動時もしくはブレーキ作動時に、
ブレーキシューの大きな外方拡開に基づくダイアフラム
２５の２点鎖線で示すような大きい変位に応じて、プレ
ッシャプレート２７が端子２９を押圧することにより摩
耗検知部２８が作動するに至り、このときリレーを介し
て上記警報装置が作動し、ブレーキシューのライニング
摩耗が危険な域に近づいていることを乗員に警告するこ
とができる。The wear detector 28 is connected to an alarm device (not shown) in the cab through a relay as in the above-described embodiments, and when the brake shoe lining is not worn, compressed air is applied from the right side of the drawing. Is supplied and the diaphragm 25 strokes, the pressure plate 27 does not reach the terminal 29 of the wear detecting portion 28, but when the wear of the brake shoe lining approaches its limit, the brake is not activated or the brake is activated. Sometimes
In response to a large displacement of the diaphragm 25 due to the large outward expansion of the brake shoe as indicated by the chain double-dashed line, the pressure plate 27 presses the terminal 29, which causes the wear detecting portion 28 to operate. The alarm device is actuated via the alarm to alert the occupant that the lining wear of the brake shoes is approaching a dangerous range.
【００１４】また、前記摩耗検知部をスラックアジャス
タに近接して設置し、ブレーキシューの大きな外方拡開
に基づくスラックアジャスタの大きな回動により、摩耗
検知部を作動させて警報装置が作動するように構成する
こともできるものである。Further, the wear detecting section is installed close to the slack adjuster, and the wear detecting section is activated by a large rotation of the slack adjuster based on the large outward expansion of the brake shoe so that the alarm device is activated. It can also be configured as.
【００１５】[0015]
【発明の効果】本発明にかかるエアブレーキにおいて
は、ブレーキシューのライニングの摩耗がその限度付近
に達したとき、摩耗検知部に接続された警報装置により
ブレーキシューのライニングの摩耗が危険な域に到達し
ていることを自動的、かつ即時に警告することができる
ので、ブレーキの信頼性を高めて車両の安全な走行を常
に確保することができる。In the air brake according to the present invention, when the wear of the lining of the brake shoe reaches near its limit, the alarm device connected to the wear detecting portion makes the wear of the lining of the brake shoe in a dangerous area. Since it is possible to automatically and immediately warn that the vehicle has reached, it is possible to enhance the reliability of the brake and always ensure safe running of the vehicle.
【図１】本発明の実施例における要部の正面図。FIG. 1 is a front view of a main part according to an embodiment of the present invention.
【図２】図１のIIーII線に沿う断面拡大図。2 is an enlarged cross-sectional view taken along the line II-II in FIG.
【図３】図２の IIIーIII 線に沿う断面拡大図。3 is an enlarged cross-sectional view taken along line III-III in FIG.
【図４】 本発明の他の実施例における要部断面
図。FIG. 4 is a cross-sectional view of essential parts in another embodiment of the present invention.
１ ブレーキシュー ３ Ｓカム ４ カムシャフト ８ スラックアジャスタ ９ 突起 １４ 摩耗検知部 １５ リレー １６ 警報装置 １７ ライニング ２０ Ｓカム ２１ カムシャフト ２２ スラックアジャスタ ２３ ブレーキチャンバ ２４ プッシュロッド ２８ 摩耗検知部 ２９ 端子 1 Brake shoe 3 S cam 4 Camshaft 8 Slack adjuster 9 Protrusion 14 Wear detector 15 Relay 16 Alarm device 17 Lining 20 S cam 21 Camshaft 22 Slack adjuster 23 Brake chamber 24 Push rod 28 Wear detector 29 Terminal
Claims (1)
系統と固定部分との間に設置され上記ブレーキシューの
ライニングの摩耗がその限度付近に達したときブレーキ
非作動時における上記Ｓカム駆動系統の変位に応じて作
動する摩耗検知部及び同摩耗検知部に接続された警報装
置を有し、上記摩耗検知部の作動により上記警報装置が
作動するように構成されたエアブレーキ。1. An S-cam drive system which is installed between an S-cam drive system that expands a brake shoe and a fixed portion, and when the wear of the lining of the brake shoe reaches its limit, when the brake is not operating. An air brake having a wear detector that operates according to the displacement of the wear detector and an alarm device connected to the wear detector, and the alarm device is activated by the operation of the wear detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15580492A JPH05321964A (en) | 1992-05-22 | 1992-05-22 | Air brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15580492A JPH05321964A (en) | 1992-05-22 | 1992-05-22 | Air brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05321964A true JPH05321964A (en) | 1993-12-07 |
Family
ID=15613818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15580492A Pending JPH05321964A (en) | 1992-05-22 | 1992-05-22 | Air brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05321964A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2154963A1 (en) * | 1997-12-18 | 2001-04-16 | Castineira Jaime Rodriguez | Brake cam, with electronic wear and tear control and final block stoppers |
| WO2012130253A3 (en) * | 2011-03-25 | 2013-01-31 | Haldex Brake Products Ab | Drum brake assembly and wear monitoring device for such an assembly |
| CN107906145A (en) * | 2017-12-22 | 2018-04-13 | 广东富华重工制造有限公司 | The brake block wear abrasion alarming device of drum brake component |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131438A (en) * | 1982-01-29 | 1983-08-05 | Hino Motors Ltd | Abrasion loss detector for brake lining |
-
1992
- 1992-05-22 JP JP15580492A patent/JPH05321964A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131438A (en) * | 1982-01-29 | 1983-08-05 | Hino Motors Ltd | Abrasion loss detector for brake lining |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2154963A1 (en) * | 1997-12-18 | 2001-04-16 | Castineira Jaime Rodriguez | Brake cam, with electronic wear and tear control and final block stoppers |
| WO2012130253A3 (en) * | 2011-03-25 | 2013-01-31 | Haldex Brake Products Ab | Drum brake assembly and wear monitoring device for such an assembly |
| US9353814B2 (en) | 2011-03-25 | 2016-05-31 | Haldex Brake Products Ab | Drum brake assembly and wear monitoring device for such an assembly |
| CN107906145A (en) * | 2017-12-22 | 2018-04-13 | 广东富华重工制造有限公司 | The brake block wear abrasion alarming device of drum brake component |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20050252735A1 (en) | Parking brake assembly | |
| US9777782B2 (en) | Shared anchor bracket for a disc brake assembly having separate service and parking brake assemblies | |
| JPH05321964A (en) | Air brake | |
| JP2001140960A (en) | Brake lining wear detection device | |
| JP2795066B2 (en) | Hydraulic drum brake | |
| JPH08156760A (en) | Emergency braking device for preventing slip of automobile | |
| USH2026H1 (en) | Brake service signaling system | |
| US7490702B1 (en) | Parking and emergency brake actuator for a drum-in-hat disc brake assembly | |
| KR100305707B1 (en) | drum brake apparatus for a vehicle | |
| US1739782A (en) | Vehicle wheel brake mechanism | |
| JPS587146Y2 (en) | Lining wear warning device | |
| KR100372420B1 (en) | Brake of vehicle | |
| EP0768475A2 (en) | Brake service signaling system | |
| US20130134002A1 (en) | Vehicle brake assembly | |
| KR100462146B1 (en) | auto parking brake for automobile | |
| KR200151506Y1 (en) | Brake lining wear warning system | |
| JPH09315121A (en) | Brake control device for railway vehicle | |
| JPS5836614Y2 (en) | Power brake device for vehicles | |
| KR0122214Y1 (en) | Device for detecting a phenomenon of vapor lock | |
| KR200151492Y1 (en) | Brake lining wear warning system | |
| KR200293356Y1 (en) | Drum brake | |
| KR0138197Y1 (en) | Parking brake lining clearance adjustment alarm for vehicle | |
| KR200162420Y1 (en) | Device for warning the Abrasion of the Brake Lining of a Car | |
| KR100191256B1 (en) | Brake pad wear sensing system | |
| KR19990007656U (en) | Automotive brake system using air resistance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19981208 |