JPH10331888A - Disc brake pad - Google Patents
Disc brake padInfo
- Publication number
- JPH10331888A JPH10331888A JP14635797A JP14635797A JPH10331888A JP H10331888 A JPH10331888 A JP H10331888A JP 14635797 A JP14635797 A JP 14635797A JP 14635797 A JP14635797 A JP 14635797A JP H10331888 A JPH10331888 A JP H10331888A
- Authority
- JP
- Japan
- Prior art keywords
- disc brake
- friction member
- brake pad
- diameter
- cylindrical
- 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
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自動車、鉄道車
両、各種産業機械等の制動に用いられるディスクブレー
キパッドに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc brake pad used for braking automobiles, railway vehicles, various industrial machines, and the like.
【０００２】[0002]
【従来の技術】自動車、鉄道車両、各種産業機械等に
は、その制動のためディスクブレーキパッド、ブレーキ
ライニング等の摩擦材が使用されている。現在、これら
の摩擦材のうちディスクブレーキパッドは、摩擦部材の
部分に実開昭６１−１６０３３３号公報、実公昭６２−
２７７１７号公報等に示されるように斜め溝又は中央付
近に縦溝を形成したもの又は実公平５−２６３６１号公
報などに示されるように摩擦部材の端部を面取り加工し
たものが一般に用いられている。図４は従来のディスク
ブレーキパッドの正面図を示し、１は裏金、２は摩擦部
材及び３は縦溝である。これらの溝や面取りしたもの
は、水濡れ時の効力特性の維持、ブレーキ鳴きの防止、
振動の防止等を目的としている。2. Description of the Related Art Friction materials such as disc brake pads and brake linings are used in automobiles, railway vehicles, various industrial machines and the like for braking. At present, among these friction materials, the disc brake pad is provided in the friction member portion in Japanese Utility Model Laid-Open No. 160333/1986 and Japanese Utility Model Publication No.
As shown in Japanese Patent No. 27717 and the like, a diagonal groove or a vertical groove near the center is formed, or as shown in Japanese Utility Model Publication No. 5-26361 or the like, an end of a friction member is chamfered. I have. FIG. 4 is a front view of a conventional disc brake pad, 1 is a backing metal, 2 is a friction member, and 3 is a vertical groove. These grooves and chamfers maintain the performance characteristics when wet, prevent brake squeal,
The purpose is to prevent vibration.
【０００３】しかしながら、近年ディスクブレーキパッ
ドに対する性能要求は高度化しており、効力特性や耐フ
ェード特性の向上とブレーキ鳴きや異音の低減等、トー
タル性能を高次元でバランスさせる必要がある。この
点、従来の溝や面取りでは効力特性や耐フェード特性の
向上は期待できず、またブレーキ鳴きの防止効果も不十
分である。[0003] However, in recent years, performance requirements for disc brake pads have become more sophisticated, and it is necessary to balance the total performance at a high level, such as improvement in efficacy characteristics and anti-fade characteristics, and reduction in brake noise and abnormal noise. In this respect, conventional grooves and chamfers cannot be expected to improve the efficacy characteristics or the anti-fade characteristics, and the effect of preventing brake squeal is also insufficient.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、耐フェード
特性に優れ、かつ制動時の鳴きがほとんど発生しないデ
ィスクブレーキパッドを提供するものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a disc brake pad which is excellent in anti-fade characteristics and hardly generates squeal during braking.
【０００５】[0005]
【課題を解決するための手段】本発明は、裏金に直径が
４０mm以下の円柱状の摩擦部材を固着してなるディスク
ブレーキパッドに関する。The present invention relates to a disc brake pad having a columnar friction member having a diameter of 40 mm or less fixed to a back metal.
【０００６】[0006]
【発明の実施の形態】本発明において、円柱状の摩擦部
材の数については特に制限はないが、固着する裏金の大
きさと形状に応じてできるだけ多くの摩擦面が得られる
ように配設することが好ましく、その大きさは直径が最
大で４０mm以下、好ましくは３５mm以下、さらに好まし
くは５〜３０mmの範囲とされ、４０mmを超えると制動時
の摩擦熱の放熱、冷却効果が低下し、フェード防止効果
に劣るという問題点が生じる。また摩擦部材の表面を研
磨した後の厚さは、９〜１２mmの範囲が好ましく、１０
〜１１．５mmの範囲がさらに好ましい。なお円柱体の大
きさや分割数を考慮することによって耐フェード特性が
さらに向上し、耐摩耗性と機械的強度を維持することが
できる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, the number of cylindrical friction members is not particularly limited, but the friction members should be arranged so as to obtain as many friction surfaces as possible according to the size and shape of the back metal to be fixed. The size is preferably 40 mm or less in diameter at maximum, preferably 35 mm or less, and more preferably in the range of 5 to 30 mm. When it exceeds 40 mm, the heat radiation and cooling effect of frictional heat during braking are reduced, and fade is prevented. There is a problem that the effect is inferior. The thickness of the friction member after polishing is preferably in the range of 9 to 12 mm.
The range of 11.5 mm is more preferable. By considering the size and the number of divisions of the cylindrical body, the fade resistance is further improved, and the wear resistance and the mechanical strength can be maintained.
【０００７】円柱状の摩擦部材が占める割合は、裏金の
固着面に対して６０〜９５％の範囲が好ましく、８０〜
９５％の範囲がさらに好ましい。円柱状の摩擦部材が占
める割合が少ないと耐摩耗性に劣り機械的強度が弱くな
るという傾向があり、一方多すぎると耐フェード特性の
向上が期待できず、ブレーキ鳴きの防止効果が不十分と
なる傾向がある。The proportion occupied by the cylindrical friction member is preferably in the range of 60 to 95% with respect to the fixing surface of the back metal, and is preferably 80 to 95%.
A range of 95% is more preferred. If the ratio of the cylindrical friction member is small, the wear resistance is poor and the mechanical strength tends to be weak.On the other hand, if the ratio is too large, the improvement of the fade resistance cannot be expected, and the effect of preventing the brake squeal is insufficient. Tend to be.
【０００８】摩擦部材の形状は円柱状とされ、これ以外
の形状では制動時の摩擦熱の放熱、冷却を効率よく行う
ことができず、ディスクブレーキパッドや相手材のディ
スクロータの昇温を抑制することができないため耐フェ
ード性を向上させることができない。The friction member has a cylindrical shape, and other shapes cannot efficiently release and cool the frictional heat during braking, and suppress the temperature rise of the disk brake pad and the disk rotor of the mating material. Therefore, the fade resistance cannot be improved.
【０００９】摩擦部材の材質は、セミメタリック系、ノ
ンスチール系、焼結体を含むメタル系、Ｃ／Ｃコンポジ
ット系等のいずれにも適用でき特に制限はない。また、
摩擦部材の素材は、一般に公知の材料が用いられ、例え
ば結合剤、繊維状物質、充填剤、摩擦調整剤等が用いら
れ、さらに必要に応じて銅、黄銅等の金属粉が用いられ
る。これらの成分は、全組成物が１００重量％となるよ
うに配合される。The material of the friction member can be applied to any of a semi-metallic type, a non-steel type, a metal type including a sintered body, and a C / C composite type, and is not particularly limited. Also,
As a material of the friction member, a generally known material is used, for example, a binder, a fibrous substance, a filler, a friction modifier, and the like, and further, a metal powder such as copper and brass is used as necessary. These components are blended so that the total composition becomes 100% by weight.
【００１０】なお結合剤としては、ＮＢＲ、ＳＢＲ等の
合成ゴムやフェノール樹脂、メラミン樹脂、エポキシ樹
脂、カシュー樹脂等の熱硬化性樹脂が用いられる。結合
剤は全組成物中に１０〜３０重量％含有することが好ま
しく、１５〜２５重量％含有することがさらに好まし
い。As the binder, a synthetic rubber such as NBR or SBR or a thermosetting resin such as a phenol resin, a melamine resin, an epoxy resin or a cashew resin is used. The binder is preferably contained in the entire composition in an amount of 10 to 30% by weight, more preferably 15 to 25% by weight.
【００１１】繊維状物質としては、ガラス繊維、セラミ
ック繊維、炭素繊維、鉱物繊維等の無機繊維、アラミド
繊維、ポリアミド繊維、ポリイミド繊維等の有機繊維、
銅繊維、黄銅繊維等の金属繊維が用いられる。繊維状物
質は全組成物中に２０〜４０重量％含有することが好ま
しく、２５〜３５重量％含有することがさらに好まし
い。Examples of the fibrous material include inorganic fibers such as glass fiber, ceramic fiber, carbon fiber, and mineral fiber; organic fibers such as aramid fiber, polyamide fiber, and polyimide fiber;
Metal fibers such as copper fibers and brass fibers are used. The fibrous substance is preferably contained in the entire composition in an amount of 20 to 40% by weight, more preferably 25 to 35% by weight.
【００１２】充填剤としては、硫酸バリウム、炭酸カル
シウム、炭酸マグネシウム等が用いられ、全組成物中に
３０〜５０重量％含有することが好ましく、３５〜４５
重量％含有することがさらに好ましい。また摩擦調整剤
としては、黒鉛、カーボン粉、ＭｏＳ2、Ｓｂ2Ｏ3、カ
シューダスト等が用いられ、全組成物中に１０〜２０重
量％含有することが好ましく、１３〜１７重量％含有す
ることがさらに好ましい。As the filler, barium sulfate, calcium carbonate, magnesium carbonate or the like is used, and it is preferably contained in the entire composition in an amount of 30 to 50% by weight, preferably 35 to 45% by weight.
More preferably, it is contained by weight. As the friction modifier, graphite, carbon powder, MoS 2 , Sb 2 O 3 , cashew dust and the like are used, and the content is preferably 10 to 20% by weight, and more preferably 13 to 17% by weight in the whole composition. Is more preferable.
【００１３】本発明になるディスクブレーキパッドを得
るには、例えば摩擦材組成物を１３０〜１６０℃、３０
〜６０MPaの条件化で成形治具を用いて必要とする大き
さの円柱状に加熱加圧成形法で成形した後、２００〜３
００℃の温度で加熱処理を行い円柱状の摩擦部材を得
る。次いで上記で得た摩擦部材を裏金に接着剤で固着
し、摩擦部材の表面を研磨してディスクブレーキパッド
とされる。In order to obtain the disc brake pad according to the present invention, for example, the friction material composition is heated at 130 to 160 ° C. and 30 ° C.
After shaping by heating and pressing into a column of the required size using a forming jig under conditions of ~ 60MPa, 200 ~ 3
Heat treatment is performed at a temperature of 00 ° C. to obtain a cylindrical friction member. Next, the friction member obtained above is fixed to the back metal with an adhesive, and the surface of the friction member is polished to obtain a disc brake pad.
【００１４】本発明におけるディスクブレーキパッド
は、円柱状の摩擦部材の成形や裏金への固着方法につい
ては特に制限はなく、上述した以外にディスクブレーキ
パッドの円柱状の大きさや配置を決めた専用金型を用い
て裏金と共に一体成形してもよい。なお、必要に応じて
加熱処理後に、さらに４４０〜８００℃の高温で成形体
の表面を焼き付けてもよい。The method of forming the cylindrical friction member and the method of fixing the disk brake pad to the back metal are not particularly limited. It may be integrally molded with the back metal using a mold. In addition, you may bake the surface of a molded object further at a high temperature of 440-800 degreeC after heat processing as needed.
【００１５】以下、本発明の実施例の形態を図面により
詳述する。図１は本発明の一実施例になるディスクブレ
ーキパッドの平面図及び図２は本発明の他の一実施例に
なるディスクブレーキパッドの平面図であり、１は裏金
で表面に円柱状の摩擦部材２が固着されている。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a plan view of a disc brake pad according to an embodiment of the present invention, and FIG. 2 is a plan view of a disc brake pad according to another embodiment of the present invention. The member 2 is fixed.
【００１６】[0016]
【実施例】以下本発明の実施例を説明する。 実施例１ 表１に示す成分を配合し、混合機で均一に混合して摩擦
材組成物を得た後、１５０℃、４０MPaの条件で加熱加
圧成形し、さらに２５０℃の温度で加熱処理を行って高
さが１２mmで、直径が４０mm、２８mm、１８mm、１２m
m、９mm及び８mmの６種類の円柱状の摩擦部材を得た。
次いで図１に示すように、裏金１の片側の面（摩擦部材
２を固着する側の面、固着面積４３cm2）に上記で得た
円柱状の摩擦部材２をそれぞれ分散して接着剤（セメダ
イン(株)製、商品名セメダインNo.１１０）で接着（固
着）し、この後摩擦部材２の表面を研磨してディスクブ
レーキパッドを得た。Embodiments of the present invention will be described below. Example 1 The components shown in Table 1 were blended and uniformly mixed with a mixer to obtain a friction material composition, which was then heated and pressed at 150 ° C. and 40 MPa, and further heated at a temperature of 250 ° C. Height is 12mm, diameter is 40mm, 28mm, 18mm, 12m
Six types of cylindrical friction members of m, 9 mm and 8 mm were obtained.
Next, as shown in FIG. 1, the columnar friction members 2 obtained above are dispersed on one surface of the back metal 1 (the surface on which the friction members 2 are fixed, the fixed area is 43 cm 2 ), and an adhesive (Cemedyne) is used. Then, the surface of the friction member 2 was polished to obtain a disc brake pad.
【００１７】実施例２ 実施例１と同様の工程を経て、高さが１２mmで、直径が
１１mmの摩擦部材を得た。次いで図２に示すように、実
施例１と同様の方法で裏金１の片側の面に上記で得た摩
擦部材２を接着し、この後摩擦部材２の表面を研磨して
ディスクブレーキパッドを得た。Example 2 Through the same steps as in Example 1, a friction member having a height of 12 mm and a diameter of 11 mm was obtained. Next, as shown in FIG. 2, the friction member 2 obtained above is bonded to one surface of the backing metal 1 in the same manner as in Example 1, and then the surface of the friction member 2 is polished to obtain a disc brake pad. Was.
【００１８】比較例１ 実施例１と同様の工程を経て、高さが１２mmで、直径が
４３mm、１８mm、１２mm、９mm及び８mmの５種類の円柱
状の摩擦部材を得た。次いで図３に示すように、実施例
１と同様の方法で裏金１の片側の面に上記で得た摩擦部
材２をそれぞれ分散して接着し、この後摩擦部材２の表
面を研磨してディスクブレーキパッドを得た。Comparative Example 1 Five kinds of cylindrical friction members having a height of 12 mm and diameters of 43 mm, 18 mm, 12 mm, 9 mm and 8 mm were obtained through the same steps as in Example 1. Next, as shown in FIG. 3, the friction members 2 obtained above are dispersed and adhered to one surface of the backing metal 1 in the same manner as in Example 1, and then the surface of the friction members 2 is polished to form a disk. I got a brake pad.
【００１９】比較例２ 金型内に裏金を挿入し、さらにその上に実施例１で得た
摩擦材組成物を挿入し、１５０℃、４０MPaの条件で加
熱加圧成形（一体成形）し、さらに２５０℃の温度で加
熱処理を行い、裏金のほぼ全面に摩擦部材を配した成形
体を得た。次いで図４に示すように摩擦部材２の中央付
近に縦溝３を形成した後、摩擦部材２の表面を研磨して
ディスクブレーキパッドを得た。Comparative Example 2 A back metal was inserted into a mold, and the friction material composition obtained in Example 1 was further inserted thereinto, and heated and pressed (integrally formed) at 150 ° C. and 40 MPa. Further, a heat treatment was performed at a temperature of 250 ° C. to obtain a molded body in which a friction member was arranged on almost the entire back metal. Next, as shown in FIG. 4, a longitudinal groove 3 was formed near the center of the friction member 2, and the surface of the friction member 2 was polished to obtain a disc brake pad.
【００２０】[0020]
【表１】 [Table 1]
【００２１】次に本発明になるディスクブレーキパッド
（実施例１、２）と比較例１、２のディスクブレーキパ
ッドについて比較試験を行った。その試験結果を表２に
示す。なお試験は、１８００ccのオートマチック車でＪ
ＡＳＯ Ｃ４０２−７９の実車試験を行い、試験中の鳴
きを測定し、音圧が７５ｄＢ以上の発生率を求め、鳴き
を評価すると共に試験前後の摩擦部材の厚みの減少量か
ら摩耗量を測定した。なお鳴き発生率については次式に
より求めた。Next, a comparative test was performed on the disc brake pads according to the present invention (Examples 1 and 2) and the disc brake pads of Comparative Examples 1 and 2. Table 2 shows the test results. The test was conducted on a 1800cc automatic car.
The actual vehicle test of ASO C402-79 was performed, the squeal during the test was measured, the occurrence rate of sound pressure of 75 dB or more was obtained, the squeal was evaluated, and the wear amount was measured from the decrease in the thickness of the friction member before and after the test. . The squeal occurrence rate was determined by the following equation.
【００２２】[0022]
【数１】 (Equation 1)
【００２３】また、フェード試験は、１００km／時間で
走行時に０．４５Ｇの減速度で１０回制動したときの摩
擦係数（以下μとする）を測定し、その最低値とμ値の
低下率の大小で耐フェード特性を評価した。In the fade test, the coefficient of friction (hereinafter referred to as μ) when braking 10 times at a deceleration of 0.45 G during running at 100 km / hour was measured, and the minimum value and the rate of decrease in μ value were measured. The fade resistance was evaluated for both large and small.
【００２４】[0024]
【表２】 [Table 2]
【００２５】表２に示されるように、本発明になるディ
スクブレーキパッドは、鳴き発生率、摩耗量及び耐フェ
ード特性に優れることが示される。これに対し、比較例
のディスクブレーキパッドは、鳴き発生率又は耐フェー
ド特性に欠点があることが示される。As shown in Table 2, it is shown that the disc brake pad according to the present invention has excellent squealing rate, abrasion resistance and fade resistance. On the other hand, it is shown that the disc brake pad of the comparative example has a defect in the squealing rate or the fade resistance.
【００２６】[0026]
【発明の効果】本発明になるディスクブレーキパッド
は、耐フェード特性に優れ、かつ制動時の鳴きがほとん
ど発生しないディスクブレーキパッドである。The disc brake pad according to the present invention is a disc brake pad which is excellent in fade resistance and hardly generates squeal during braking.
【図１】本発明の一実施例になるディスクブレーキパッ
ドの平面図である。FIG. 1 is a plan view of a disc brake pad according to an embodiment of the present invention.
【図２】本発明の他の一実施例になるディスクブレーキ
パッドの平面図である。FIG. 2 is a plan view of a disc brake pad according to another embodiment of the present invention.
【図３】比較例１のディスクブレーキパッドの平面図で
ある。FIG. 3 is a plan view of a disc brake pad of Comparative Example 1.
【図４】比較例２（従来）のディスクブレーキパッドの
平面図である。FIG. 4 is a plan view of a disc brake pad of Comparative Example 2 (conventional).
１ 裏金 ２ 摩擦部材 ３ 縦溝 DESCRIPTION OF SYMBOLS 1 Back metal 2 Friction member 3 Vertical groove
Claims (1)
部材を固着してなるディスクブレーキパッド。1. A disc brake pad having a columnar friction member having a diameter of 40 mm or less fixed to a backing metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14635797A JPH10331888A (en) | 1997-06-04 | 1997-06-04 | Disc brake pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14635797A JPH10331888A (en) | 1997-06-04 | 1997-06-04 | Disc brake pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10331888A true JPH10331888A (en) | 1998-12-15 |
Family
ID=15405896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14635797A Pending JPH10331888A (en) | 1997-06-04 | 1997-06-04 | Disc brake pad |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10331888A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008138781A (en) * | 2006-12-01 | 2008-06-19 | Sumitomo Denko Brake Systems Kk | Grinding method for brake pad and lining of the same pad |
| JPWO2015068183A1 (en) * | 2013-11-05 | 2017-03-09 | 三菱電機株式会社 | Brake device |
-
1997
- 1997-06-04 JP JP14635797A patent/JPH10331888A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008138781A (en) * | 2006-12-01 | 2008-06-19 | Sumitomo Denko Brake Systems Kk | Grinding method for brake pad and lining of the same pad |
| JP4702272B2 (en) * | 2006-12-01 | 2011-06-15 | 住友金属工業株式会社 | Brake pads |
| JPWO2015068183A1 (en) * | 2013-11-05 | 2017-03-09 | 三菱電機株式会社 | Brake device |
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