JPH0219640Y2 - - Google Patents
Info
- Publication number
- JPH0219640Y2 JPH0219640Y2 JP1986047184U JP4718486U JPH0219640Y2 JP H0219640 Y2 JPH0219640 Y2 JP H0219640Y2 JP 1986047184 U JP1986047184 U JP 1986047184U JP 4718486 U JP4718486 U JP 4718486U JP H0219640 Y2 JPH0219640 Y2 JP H0219640Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- electrical connection
- insertion hole
- socket
- cylinder chamber
- 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
- 230000037431 insertion Effects 0.000 claims description 13
- 238000003780 insertion Methods 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
産業上の利用分野
この考案は、パツドが摩耗限界に達したとき、
コネクターがソケツトから抜けて、アラームシグ
ナルが点滅するように形成したデイスブレーキに
おけるパツドの摩耗検知装置に関する。[Detailed explanation of the invention] Industrial application field This invention is based on the idea that when the pad reaches its wear limit,
This invention relates to a pad wear detection device for a disc brake that is configured so that an alarm signal flashes when the connector is pulled out of the socket.
従来の技術
デイスクブレーキは、第２図に示すように、ア
ンカープレートに２個のリテーナーによつてキヤ
リパー１が保持され、制動時にレール部をスライ
ドし、回転するローター５をインナーパツド３と
アウターパツド４で挟んで制動するように構成さ
れている。第２図は、従来例の一を示すキヤリパ
ーの断面図である。キヤリパー１内には２個のシ
リンダーが設けられており、それぞれのシリンダ
ーにピストン２が組込まれている。制動時におけ
るブレーキペダルの踏込みにより、加圧作動油が
シリンダー内に導入されてピストン２を押出し、
インナーパツド３をローター５の一方の周側面に
押し付け、同時にその反力でキヤリパー１が移動
し、アウターパツド４をローター５の他方の周側
面に押し付けて制動力が生ずるように構成されて
いる。またシリンダー内周壁とピストン外周壁の
液封は、矩形断面のシール６によつて行われ、シ
リンダー内に加圧作動油が導入されると、ピスト
ン２は矩形断面のシール６を平行四辺形断面に弾
性変形させながら押出される。シリンダー内が除
圧されると、平行四辺形断面に弾性変形したシー
ル６は変形前の矩形断面に戻り、ピストン２はシ
ール６の変形分だけ戻され、ローター５とインナ
ーパツド３、アウターパツド４との間に適当なス
キマを保つように構成されている。さらにインナ
ーパツド３とアウターパツド４の摩耗量が増加
し、ピストン２の移動量が増加して、シール６の
変形分を越えると、その越えた量だけが、ピスト
ン２とシール６の間ですべりピストン２のみが押
出されるように構成されている。Prior Art As shown in Fig. 2, in a disc brake, a caliper 1 is held by two retainers on an anchor plate, slides on a rail part during braking, and rotates a rotor 5 with an inner pad 3 and an outer pad 4. It is configured to brake by pinching it. FIG. 2 is a sectional view of a caliper showing one conventional example. Two cylinders are provided within the caliper 1, and a piston 2 is installed in each cylinder. When the brake pedal is pressed during braking, pressurized hydraulic oil is introduced into the cylinder and pushes out the piston 2.
The inner pad 3 is pressed against one circumferential side of the rotor 5, and at the same time, the caliper 1 is moved by the reaction force, and the outer pad 4 is pressed against the other circumferential side of the rotor 5 to generate a braking force. Liquid sealing between the inner peripheral wall of the cylinder and the outer peripheral wall of the piston is achieved by a seal 6 with a rectangular cross section. When pressurized hydraulic oil is introduced into the cylinder, the piston 2 seals the seal 6 with a rectangular cross section into a parallelogram cross section. It is extruded while being elastically deformed. When the pressure inside the cylinder is removed, the seal 6 which has been elastically deformed to a parallelogram cross section returns to the rectangular cross section before deformation, the piston 2 is returned by the amount of deformation of the seal 6, and the rotor 5, inner pad 3, and outer pad 4 are It is configured to maintain an appropriate gap between them. Furthermore, when the amount of wear on the inner pad 3 and the outer pad 4 increases and the amount of movement of the piston 2 increases, exceeding the amount of deformation of the seal 6, only that amount will slide between the piston 2 and the seal 6. It is configured so that only one part is extruded.
考案が解決しようとする問題点
このデイスクブレーキでは、パツドの摩耗状態
を車両の運転者は感知することが難しい問題点を
有している。つまり、ピストン２が、当該ピスト
ン２とシール６の間ですべり、その分押出されて
も、シリンダー内には、ピストン２の押出された
分に相当する作動油がタンクから補充されるの
で、次の制動時に、ブレーキペダルの踏込み量は
増加しない。従つて運転者は、パツドが摩耗限界
を越えても、通常のブレーキペダル操作を行い、
遂にはパツドが摩耗しつくしても、なお、ブレー
キペダルを操作してしまう問題点を有している。Problems to be Solved by the Invention This disc brake has a problem in that it is difficult for the driver of the vehicle to detect the wear state of the pads. In other words, even if the piston 2 slips between the piston 2 and the seal 6 and is pushed out by that amount, the cylinder is replenished with hydraulic oil equivalent to the amount pushed out by the piston 2, so the next time When braking, the amount of brake pedal depression does not increase. Therefore, even if the pads exceed the wear limit, the driver should continue to operate the brake pedal normally.
There is a problem in that even when the pads are worn out, the brake pedal is still operated.
問題を解決するための手段
この考案では、シリンダーボトムを形成するキ
ヤリパー壁にソケツトを設け、該シリンダーボト
ムと対峙するピストン端面にコネクターを設け
て、両者を着脱可能に接続し、ブレーキパツドの
摩耗が限界以上となり、ピストンの過大な移動が
生じたときに両者を脱嵌して、アラームシグナル
を点滅させて上述の問題点を解決した従来例にな
い、新規なデイスクブレーキにおけるパツドの摩
耗検知装置を提供することを目的とするものであ
る。Means to Solve the Problem In this invention, a socket is provided on the caliper wall that forms the cylinder bottom, and a connector is provided on the end face of the piston facing the cylinder bottom to removably connect the two, thereby minimizing wear on the brake pads. As described above, we provide a new pad wear detection device for disc brakes that has never been seen before, which solves the above-mentioned problem by disengaging both pistons and flashing an alarm signal when excessive movement of the piston occurs. The purpose is to
実施例
この考案を図示の実施例に基づいて詳細に説明
する。Embodiments This invention will be explained in detail based on illustrated embodiments.
第１図はシリンダーボトム部の拡大断面図であ
る。図中１はキヤリパー、２はピストン、６はシ
ール、７がシリンダー、８はシリンダーボトム、
９がソケツト、１０はコネクター、１１は固定子
である。ソケツト９は、２個のシリンダー７のい
ずれか一方若しくは相方の、軸心上のキヤリパー
１に、小径の貫通孔１２と貫通孔１２よりもやや
径を大きく形成した螺子孔１３および螺子孔１３
より径を大きく形成した嵌合孔１４を同心に連接
して形成した段付状の取付孔１５を設け、当該取
付孔１５に螺着固定する。すなわちソケツト９
は、取付孔１５の嵌合孔１４とわずかに遊嵌する
鍔部１６と、この鍔部１６に連接して取付孔１５
の螺子孔１３と螺合する雄ネジ部１７を設けて形
成し、螺子孔１３に雄ネジ部１７を螺合させ、鍔
部１６の背面と嵌合孔１４と螺子孔１３の段付面
とを当接させて固定する。また、該ソケツト９
は、第３図に示すように、軸心上の鍔部１６端面
に開口する有底孔１８を形成し、かつ、当該有底
孔１８の中腹に半径方向に伸延する円状の矩形溝
１９を連通して設け、この有底孔１８および矩形
溝１９に合成樹脂材の絶縁材２０を充填すると共
に巾板状の２枚の接続端子２１を対峙させて固定
して設ける。この場合２枚の接続端子２１の一方
の端部は鍔部１６端面から突出するように形成す
る。突出した接続端子２１には、この２枚の接続
端子２１間の接続が切れたとき、アラームシグナ
ルが点滅する警報回路を接続する。一方ソケツト
９の雄ネジ部１６の端面には、軸心上の当該端面
に開口する円形の挿嵌孔２２を設ける。挿嵌孔２
２は対峙する２枚の接続端子２１の一部と重合す
る位置迄設け、該接続端子２１が挿嵌孔２２の内
周に露出する径に形成する。また当該挿嵌孔２２
は雄ネジ部１７の壁肉部に“Ｏ”リング溝２３を
設け液封用の“Ｏ”リングを挿入する。コネクタ
ー１０は円柱状に形成した合成樹脂材からなる絶
縁体と、該絶縁体の一方の端縁近部の外表部に円
筒状の端子部を埋設して形成した接続プラグ部２
４と、鋼製の細糸部２５からなり、細糸部２５の
一端部を接続プラグ部２４の軸心部に植込んで固
定し、他方の端縁を、ピストン２の底部外側中心
部に螺着固定した回転自在の固定子１１に巻き付
け固定する。コネクター１０は接続プラグ部２４
をソケツト９の挿嵌孔２２とわずかな締代を有し
て挿入し得る径に形成し、同時に接続プラグ部２
４の円筒状の端子部がソケツト９の接続端子２１
とタイトに接触するように形成する。また細糸部
２５は、キヤリパー１のシリンダー７にピストン
２を組込み、摩耗していない新品のインナーパツ
ド３とアウターパツド４を装着した状態では、弛
んでおり、ピストン２がパツドの摩耗限界に対し
たとき緊張し接続プラグ２４とソケツト９の接続
端子２１が脱嵌する長さに形成する。 FIG. 1 is an enlarged sectional view of the cylinder bottom portion. In the figure, 1 is a caliper, 2 is a piston, 6 is a seal, 7 is a cylinder, 8 is a cylinder bottom,
9 is a socket, 10 is a connector, and 11 is a stator. The socket 9 has a small diameter through hole 12, a screw hole 13 formed with a diameter slightly larger than the through hole 12, and a screw hole 13 in the caliper 1 on the axis of one or the other of the two cylinders 7.
A stepped mounting hole 15 is formed by concentrically connecting fitting holes 14 formed with a larger diameter, and is screwed and fixed into the mounting hole 15. i.e. socket 9
, a flange 16 that slightly loosely fits into the fitting hole 14 of the mounting hole 15, and a flange 16 connected to the flange 16 of the mounting hole 15.
The male screw part 17 is screwed into the screw hole 13, and the back surface of the flange part 16, the fitting hole 14, and the stepped surface of the screw hole 13 are formed. and secure it in place. In addition, the socket 9
As shown in FIG. 3, a bottomed hole 18 is formed that opens at the end surface of the flange 16 on the axis, and a circular rectangular groove 19 that extends in the radial direction is formed in the middle of the bottomed hole 18. The bottomed hole 18 and the rectangular groove 19 are filled with an insulating material 20 made of synthetic resin, and two width plate-shaped connection terminals 21 are fixed facing each other. In this case, one end of the two connecting terminals 21 is formed to protrude from the end surface of the flange 16. An alarm circuit is connected to the protruding connection terminal 21 so that an alarm signal flashes when the connection between the two connection terminals 21 is broken. On the other hand, a circular fitting hole 22 is provided in the end face of the male threaded portion 16 of the socket 9, which opens on the end face on the axis. Insertion hole 2
2 is provided up to a position where it partially overlaps with the two facing connection terminals 21, and is formed to have a diameter such that the connection terminals 21 are exposed to the inner periphery of the insertion hole 22. In addition, the insertion hole 22
An "O" ring groove 23 is provided in the wall portion of the male threaded portion 17, and an "O" ring for liquid sealing is inserted therein. The connector 10 includes a cylindrical insulator made of a synthetic resin material, and a connection plug part 2 formed by embedding a cylindrical terminal part in the outer surface near one edge of the insulator.
4 and a thin thread part 25 made of steel, one end of the thread part 25 is implanted and fixed in the axial center of the connecting plug part 24, and the other end is inserted into the bottom outer center of the piston 2. It is wound and fixed around a rotatable stator 11 which is screwed and fixed. The connector 10 is a connecting plug part 24
is formed to have a diameter that allows it to be inserted into the insertion hole 22 of the socket 9 with a slight tightening margin, and at the same time, the connecting plug portion 2
The cylindrical terminal part 4 is the connection terminal 21 of the socket 9.
Form it so that it is in tight contact with the Furthermore, when the piston 2 is assembled into the cylinder 7 of the caliper 1 and new, unworn inner pads 3 and outer pads 4 are attached, the thin thread portion 25 is loose, and when the piston 2 reaches the wear limit of the pads, It is formed to a length that allows the connection plug 24 and the connection terminal 21 of the socket 9 to fit and disengage under tension.
作 用
まず、ピストン２に固定子１１を固定し、該固
定子１１にコネクター１０の細糸部２５の一端を
巻き付けて固定し、接続プラグ２４をキヤリパー
１の取付孔１５に通貫させて、ソケツト９の挿嵌
孔２２に挿入固定する。この状態でソケツト９を
取付孔１５に固定する。この時点ではコネクター
１０の細糸部２５は弛んだ状態にある。インナー
パツド３とアウターパツド４が摩耗し、ピストン
２の突出量が増加するに従い、コネクター１０の
細糸部２５が伸び、ピストン２の突出量がインナ
ーパツド３とアウターパツド４の摩耗限界近くに
達したとき、細糸部２５が緊張し、摩耗限界に達
したときのピストン２の突出位置で接続プラグ２
４とソケツト９の接続端子２１との接触が外れて
接続端子２１間の回路が切断される。このとき接
続端子２１に接続するアラームシグナル回路が入
り、シグナルが点滅し、運転者にパツドの交換時
期を知らせる。Function: First, the stator 11 is fixed to the piston 2, one end of the thin thread part 25 of the connector 10 is wrapped around the stator 11, and the connecting plug 24 is passed through the mounting hole 15 of the caliper 1. Insert and fix into the insertion hole 22 of the socket 9. In this state, the socket 9 is fixed in the mounting hole 15. At this point, the thread portion 25 of the connector 10 is in a relaxed state. As the inner pad 3 and outer pad 4 wear out and the amount of protrusion of the piston 2 increases, the thin thread portion 25 of the connector 10 stretches, and when the amount of protrusion of the piston 2 reaches near the wear limit of the inner pad 3 and outer pad 4, The connecting plug 2 is in the protruding position of the piston 2 when the thread part 25 is under tension and reaches the wear limit.
4 and the connection terminal 21 of the socket 9 are disconnected, and the circuit between the connection terminal 21 is broken. At this time, an alarm signal circuit connected to the connection terminal 21 is turned on, and the signal flashes to notify the driver that it is time to replace the pads.
次に第２の実施例について説明する。 Next, a second embodiment will be described.
第１の実施例におけるコネクター１０の接続プ
ラグ２４に連接する細糸部２５は鋼製線材で形成
したが、第２の実施例においては、第５図に示す
ように、コイルスプリング２６で形成する。コイ
ルスプリング２６はピストン２の突出量がインナ
ーパツド３とアウターパツド４の摩耗量の限界に
対したとき、接続端子２１と接続プラグ２４の接
触圧力および接続プラグ２４と挿入孔２２との接
触圧力による摩擦力に打勝つて瞬間に接続プラグ
２４を挿嵌孔２２から脱嵌させるように形成す
る。 The thin thread part 25 connected to the connection plug 24 of the connector 10 in the first embodiment was formed of a steel wire rod, but in the second embodiment, it was formed of a coil spring 26 as shown in FIG. . When the amount of protrusion of the piston 2 reaches the limit of the wear amount of the inner pad 3 and outer pad 4, the coil spring 26 generates a friction force due to the contact pressure between the connection terminal 21 and the connection plug 24 and the contact pressure between the connection plug 24 and the insertion hole 22. The connection plug 24 is formed so as to be inserted and removed from the insertion hole 22 at the moment when the connection plug 24 is overcome.
効 果
この考案によれば、インナーパツドとアウター
パツドの摩耗が限界に達したとき、アラームシグ
ナルが点滅するので、車両の運転者は、パツドの
交換時期を知ることができる。またインナーパツ
ドとアウターパツドの相対的な摩耗を検知できる
ので、いずれのパツドの摩耗も検知することがで
きる。また、コネクターはパツドの交換時に再挿
入すれば再使用できるので製作や組付けに費用の
掛からない実用的な摩耗検知装置の提供が可能と
なる。Effects According to this invention, when the wear of the inner and outer pads reaches its limit, an alarm signal flashes, allowing the driver of the vehicle to know when it is time to replace the pads. Furthermore, since the relative wear between the inner pad and the outer pad can be detected, wear on either pad can be detected. Furthermore, since the connector can be reused by reinserting it when replacing the pad, it is possible to provide a practical wear detection device that is inexpensive to manufacture and assemble.
第１図はシリンダーボトム部の拡大断面図、第
２図は従来例の１を示すキヤリパーの断面図、第
３図はソケツトの断面図、第４図はコネクターの
断面図、第５図は他の実施例におけるコネクター
の断面図である。
１……キヤリパー、２……ピストン、３……イ
ンナーパツド、４……アウターパツド、５……ロ
ーター、６……シール、７……シリンダー、８…
…シリンダーボトム、９……ソケツト、１０……
コネクター、１１……固定子、１２……貫通孔、
１３……螺子孔、１４……嵌合孔、１５……取付
孔、１６……鍔部、１７……雄ネジ部、２１……
接続端子、２２……挿嵌孔、２４……接続プラ
グ、２５……細糸部、２６……コイルスプリン
グ。
Fig. 1 is an enlarged cross-sectional view of the cylinder bottom, Fig. 2 is a cross-sectional view of the caliper showing conventional example 1, Fig. 3 is a cross-sectional view of the socket, Fig. 4 is a cross-sectional view of the connector, and Fig. 5 is the other. FIG. 3 is a cross-sectional view of the connector in the embodiment. 1... Caliper, 2... Piston, 3... Inner pad, 4... Outer pad, 5... Rotor, 6... Seal, 7... Cylinder, 8...
...Cylinder bottom, 9...Socket, 10...
Connector, 11... Stator, 12... Through hole,
13...Threaded hole, 14... Fitting hole, 15... Mounting hole, 16... Flange part, 17... Male thread part, 21...
Connection terminal, 22...insertion hole, 24...connection plug, 25...thin thread portion, 26...coil spring.
Claims (1)
挿入され、シリンダ室内に導入される加圧作動
油により押し出されてブレーキパツド３，４を
ローター５に押し付けるピストン２を有したデ
イスクブレーキにおいて、 前記シリンダー室のシリンダボトム８に貫通
開口した取り付け孔１５に液密に取り付けら
れ、前記シリンダー室に開口した有底の挿嵌孔
２２を有するソケツト９と、前記挿嵌孔２２内
に嵌入された接続プラグ部２４および一端がこ
の接続プラグ部に接続され他端が前記ピストン
に接続された線部材からなるコネクター１０と
を有し、 前記ソケツト９には、互いに電気的に絶縁離
間されるとともに、それぞれ一端が前記嵌挿孔
２２内に露出し他端が外方に突出した一対の電
気接続端子２１が配設され、前記挿嵌孔２２内
に前記接続プラグ部２４が嵌入された状態で前
記一端において前記電気接続端子同士が前記接
続プラグ部により電気的に接続され、摩耗限界
に達した前記ブレーキパツド３，４を押圧する
位置まで前記ピストン２が押し出されたとき
に、前記線部材が緊張して前記プラグ部２４を
前記挿嵌孔２２から脱嵌し、前記電気接続端子
２１同士の電気接続を切断するようになつてお
り、 前記電気接続端子２１の前記他端には、前記
接続端子同士の電気接続が切断されたときにア
ラーム信号を発する警報回路が接続されている
ことを特徴とするデイスクブレーキにおけるパ
ツドの摩耗検知装置。 ２ 前記線部材が、細い糸状の部材２５であるこ
とを特徴とする実用新案登録請求の範囲第１項
記載の摩耗検知装置。 ３ 前記線部材が、コイルスプリング２６である
ことを特徴とする実用新案登録請求の範囲第１
項記載の摩耗検知装置。[Claims for Utility Model Registration] 1. A disk having a piston 2 inserted into a cylinder chamber formed in a caliper 1 and pushed out by pressurized hydraulic oil introduced into the cylinder chamber to press brake pads 3 and 4 against a rotor 5. In the brake, a socket 9 is fluid-tightly attached to a mounting hole 15 penetrating through the cylinder bottom 8 of the cylinder chamber, and has a bottomed insertion hole 22 opened to the cylinder chamber, and a socket 9 in the insertion hole 22. It has a connecting plug part 24 fitted therein and a connector 10 made of a wire member, one end of which is connected to the connecting plug part and the other end of which is connected to the piston, and the socket 9 has a connector 10 that is electrically insulated and spaced apart from each other. A pair of electrical connection terminals 21 each having one end exposed in the insertion hole 22 and the other end protruding outward are provided, and the connection plug portion 24 is fitted into the insertion hole 22. When the piston 2 is pushed out to a position where it presses the brake pads 3 and 4 which have reached the wear limit, the electrical connection terminals are electrically connected to each other by the connection plug part at the one end. is tensioned to unfit the plug portion 24 from the insertion hole 22 and disconnect the electrical connection between the electrical connection terminals 21, and the other end of the electrical connection terminal 21 has the A pad wear detection device for a disc brake, characterized in that an alarm circuit is connected to issue an alarm signal when electrical connection between connection terminals is broken. 2. The wear detection device according to claim 1, wherein the wire member is a thin thread-like member 25. 3 Utility model registration claim 1, characterized in that the wire member is a coil spring 26
Wear detection device as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986047184U JPH0219640Y2 (en) | 1986-04-01 | 1986-04-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986047184U JPH0219640Y2 (en) | 1986-04-01 | 1986-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62163338U JPS62163338U (en) | 1987-10-17 |
| JPH0219640Y2 true JPH0219640Y2 (en) | 1990-05-30 |
Family
ID=30867544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986047184U Expired JPH0219640Y2 (en) | 1986-04-01 | 1986-04-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0219640Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730428B2 (en) * | 1978-02-09 | 1982-06-29 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730428U (en) * | 1980-07-29 | 1982-02-17 |
-
1986
- 1986-04-01 JP JP1986047184U patent/JPH0219640Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5730428B2 (en) * | 1978-02-09 | 1982-06-29 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62163338U (en) | 1987-10-17 |
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