JP4240302B2 - How to install the disc brake pad - Google Patents

How to install the disc brake pad Download PDF

Info

Publication number
JP4240302B2
JP4240302B2 JP2003376410A JP2003376410A JP4240302B2 JP 4240302 B2 JP4240302 B2 JP 4240302B2 JP 2003376410 A JP2003376410 A JP 2003376410A JP 2003376410 A JP2003376410 A JP 2003376410A JP 4240302 B2 JP4240302 B2 JP 4240302B2
Authority
JP
Japan
Prior art keywords
welding
expanded metal
pad
brake pad
disc
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 - Lifetime
Application number
JP2003376410A
Other languages
Japanese (ja)
Other versions
JP2005140217A (en
Inventor
正二 三平
泰博 杉山
宗平 田口
Original Assignee
株式会社電元社製作所
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 株式会社電元社製作所 filed Critical 株式会社電元社製作所
Priority to JP2003376410A priority Critical patent/JP4240302B2/en
Publication of JP2005140217A publication Critical patent/JP2005140217A/en
Application granted granted Critical
Publication of JP4240302B2 publication Critical patent/JP4240302B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Braking Arrangements (AREA)

Description

本発明は,自動車のブレーキ装置に用いられる回転ディスクの両面にブレーキパッド(摩擦材)を押し付けて制動するディスクブレーキに関し,とくに前記ディスクに押し付けて制動力を発生するブレーキパッドをバッキングプレートに取付ける場合の方法に関する。     The present invention relates to a disc brake that brakes by pressing brake pads (friction materials) on both surfaces of a rotating disk used in a brake device of an automobile, and in particular, when a brake pad that presses against the disc and generates a braking force is attached to a backing plate. Concerning the method.

自動車のディスクブレーキの構造はJIS D−0107を参照することによりその基本的な構造を示す展開図により知ることができる。ディスクブレーキは回転するディスクの回転面に摩擦材を押し付けて制動するブレーキ装置を言うもので,ディスクの両面に押し付けて制動力を発生する摩擦材はブレーキパッドといい,一般にアスベスト系,セミメタリック系などの摩擦素材から構成されている(非特許文献1)。 The structure of the disc brake of an automobile can be known from a developed view showing the basic structure by referring to JIS D-0107. A disc brake is a brake device that presses and brakes friction material against the rotating surface of a rotating disc. The friction material that presses against both sides of the disc to generate braking force is called a brake pad. and a friction material such as (non-patent document 1).

従来のブレーキパッドの製造工法は,数十種類の無機,有機素材から調整されたブレーキパッド材質の原料紛を,成形時に原料粉がこぼれないように,ビスケット状に軽くプレスで押して予備成形状に固めておく。一方,複数の取付け穴を開いたバッキングプレート(金属製裏板)の表面を脱脂した後,耐熱性接着材を塗布する。 次の成形行程でバッキングプレートをセットした上に,金型にビスケット状の混合紛を入れ,百数十℃で加熱成形を行いパッドの形に成形する。次の硬化工程では,ブレーキパッドを200℃以上で長時間かけて焼き上げブレーキパッドの性能の安定化と機械的な強度を確保する。   In the conventional brake pad manufacturing method, brake pad material powder prepared from dozens of inorganic and organic materials is lightly pressed into a biscuit shape to prevent pre-molding. Let it harden. On the other hand, after degreasing the surface of the backing plate (metal back plate) with a plurality of mounting holes, heat-resistant adhesive is applied. In the next molding process, set the backing plate, put the mixed powder in the form of biscuits into the mold, and heat mold at hundreds of degrees Celsius to form the pad. In the next curing process, the brake pads are baked at 200 ° C. or higher for a long time, and the performance and mechanical strength of the brake pads are ensured.

ブレーキパッドは言うまでもなく,ブレーキを掛けた時の急激な摩擦熱により高温化と応力が繰り返されるため,バッキングプレートとブレーキパッド(耐熱摩擦材)の高温密着力・耐応力・品質の安定性が要求されている。バッキングプレートとパッド部品は,自動車を減速し又は停止させる制御部品の一つであるため使用中にブレーキパッドが剥がれることは絶対に許されない。   Needless to say brake pads, high temperature and stress are repeated due to sudden frictional heat when the brakes are applied. Therefore, high temperature adhesion, stress resistance and quality stability between the backing plate and the brake pads (heat resistant friction material) are required. Has been. Since the backing plate and the pad parts are one of the control parts that slow down or stop the automobile, it is absolutely not allowed for the brake pads to be peeled off during use.

従来の問題は,バッキングプレート(裏金)の上に接着剤を塗ってその接着力によって接着されており,前記パッドによる制動によって実質的に車を減速したり停止を繰り返すと,前記接着層はブレーキ時の熱エネルギーと安定走行時の常温冷却を繰り返し受けることになり,とくに耐熱性を有する接着層がブレーキの加熱によって800℃以上急激に温度上昇したり急激に常温まで冷却されたりすると接着剤の接着力は高温と冷却温度の急激な変化によって次第に劣化し,さらにブレーキ時の大きな機械的負荷を繰り返し受けるとブレーキパッドがバッキングプレートから剥離する危険があった。   The conventional problem is that an adhesive is applied on the backing plate (back metal) and adhered by its adhesive force. When the vehicle is substantially decelerated or repeatedly stopped by braking with the pad, the adhesive layer is braked. When the adhesive layer with heat resistance rises suddenly by 800 ° C or more due to heating of the brake or is cooled down to room temperature, the adhesive Adhesive strength gradually deteriorated due to sudden changes in high temperature and cooling temperature, and the brake pads could peel from the backing plate when subjected to repeated large mechanical loads during braking.

財団法人日本規格協会発行JISハンドブック:2002 JIS D 0107自動車ブレーキ用語(部品)P149JIS Handbook issued by the Japanese Standards Association: 2002 JIS D 0107 Automotive brake terms (parts) P149 特開昭62−137183号公報JP 62-137183 A

本発明が解決しようとする課題は,耐熱性を有する接着剤がブレーキ時の制動熱による高温加熱と急激な常温冷却の急激な温度変化の環境に繰り返し晒されると接着剤の劣化に伴ってディスクブレーキ板の制動摩擦により発生する振動や衝撃力によって接着されたブレーキパッドが剥離するという問題を解決することにある。   The problem to be solved by the present invention is that when a heat-resistant adhesive is repeatedly exposed to an environment of high temperature heating due to braking heat at the time of braking and rapid temperature change of rapid room temperature cooling, the disk is deteriorated as the adhesive deteriorates An object of the present invention is to solve the problem that the brake pads adhered due to vibration and impact generated by braking friction of the brake plate are peeled off.

そこで上記目的を達成するために,請求項1の発明は自動車用ディスクの表面に摩擦材からなるブレーキパッドを押し付けて,回転するディスク面と摩擦材との相対運動によって摩擦制動力を発生させるディスクブレーキに関し,
前記ディスク面に前記ブレーキパッドを接触させる方向に作動するための作動機構に支持されたバッキングプレートに,細長い鋼材を網目状にかみ合わせて構成されたエキスパンドメタルを重ね合わせ,その重ね合わせて形成された突起状の接触部を一対の電極間で挟みつけ,前記電極間に溶接に必要な加圧力を与えると共に溶接電流を流して前記突起状の接触部をプロジェクション溶接して一体化する溶接工程と,
前記溶接工程を経て一体化されたエキスパンドメタルに前記ブレーキパッドを成形・固着するための一連のパッド硬化工程とからディスクブレーキ用パッドを製造するに際し,
前記溶接工程において前記エキスパンドメタルの溶接後のメッシュ高さ寸法は予め実験によって求められた溶接部の機械的強度が得られるメッシュ高さ寸法を所定基準範囲とすること,当該メッシュ高さ寸法基準内に対応する溶接条件の基にコンデンサ電源から短時間の大電流を流して前記突起接触部の全面をプロジェクション溶接すること,これによって前記バッキングプレートに一体化された前記エキスパンドメタルのメッシュ高さ寸法が前記所定基準内に維持されることを特徴とするディスクブレーキ用パッの取付け方法を提供する。
Accordingly, in order to achieve the above object, the invention of claim 1 is a disc in which a brake pad made of a friction material is pressed against the surface of an automobile disc, and a friction braking force is generated by relative motion between the rotating disc surface and the friction material. Regarding brakes,
Expanded metal formed by meshing elongated steel materials meshed on a backing plate supported by an operating mechanism for operating in the direction in which the brake pad is brought into contact with the disc surface, and formed by overlapping the stacked metal. A welding step of sandwiching the protruding contact portion between a pair of electrodes, applying a welding pressure necessary for welding between the electrodes, and flowing a welding current to project and integrate the protruding contact portion;
When manufacturing a disc brake pad from a series of pad curing processes for forming and fixing the brake pad to the expanded metal integrated through the welding process,
In the welding process, the mesh height dimension after welding of the expanded metal is set within a predetermined reference range, which is a mesh height dimension at which the mechanical strength of a welded portion obtained in advance by experiment is obtained. The entire surface of the protrusion contact portion is projected and welded by supplying a large current for a short time from a capacitor power source based on the welding conditions corresponding to the above, whereby the mesh height dimension of the expanded metal integrated with the backing plate can be reduced. to provide a mounting method of the pad for a disc brake, characterized in that it is maintained within the predetermined criterion.

次に発明は,前記エキスパンドメタルは前記バッキングプレートの形状と平面的にほぼ同形をなし,しかも縦方向に分割して前記一体化することにより,相隣なる分割されたエキスパンドメタル相互間には複数の摩擦限界警告溝に対応する縦溝が形成されるようにしたことを特徴とするNext, according to the present invention, the expanded metal has substantially the same shape as the shape of the backing plate in a plan view, and is divided in the vertical direction to be integrated with each other so that adjacent expanded metals are separated from each other. A longitudinal groove corresponding to a plurality of friction limit warning grooves is formed .

さらに発明は,前記溶接工程においてエキスパンドメタルは溶接後の少なくとも一列目の突起溶接部をラップさせてプロジェクション溶接を数回繰り返して一体化することを特徴とする。 Furthermore, the present invention is characterized in that in the welding step, the expanded metal is integrated by repeating projection welding several times by wrapping at least the first row of projection welds after welding.

削除   Delete

請求項1の発明によれば,規格製品のエキスパンドメタルを使用してバッキングプレートにコンデンサ式プロジェクション溶接により一体化し,次いで一体化したエキスパンドメタルに接着剤を塗布した後,金型にビスケット状の混合紛を入れ,数百度以上で加熱成形を行いパッドの形に組み込む工程により,パッド素材をエキスパンドメタルの細かいメッシュ内部に全範囲にわたって舞込むことで,パッド素材内部にエキスパンドメタルが埋設されブレーキパッドの固定材及び補強筋としてバッキングプレートに強固に固定される。これによってブレーキパッに強要される衝撃力または振動力がメッシュ材の網目に沿って細かく分散,吸収されることになり,さらにブレーキパッドに発生する摩擦熱はメッシュ材の網目に沿って細かく伝導し分散されることになって耐久性を飛躍的に向上する。したがってブレーキの摩擦制動加熱による高温と冷却の変温環境にも対応でき,接着剤の高温密着力・耐応力等の幾重の安全対策が取れる。 According to the first aspect of the present invention, a standard product expanded metal is used to be integrated with the backing plate by capacitor projection welding, and then an adhesive is applied to the integrated expanded metal, and then the biscuit-like mixing is performed on the mold. By inserting the powder, heat forming at several hundred degrees or more, and incorporating it into the shape of the pad, the pad material is brought into the expanded metal fine mesh over the entire range, so that the expanded metal is embedded inside the pad material and the brake pad It is firmly fixed to the backing plate as a fixing material and reinforcing bars. This impact force or finely dispersing the vibration force along the meshes of the mesh material is forced into the brake pads, would be absorbed, frictional heat further generated in the brake pad finely conducted along the mesh of the mesh material It will be dispersed and the durability will be dramatically improved. Therefore, it can cope with high temperature and cooling temperature change environment due to friction braking heating of the brake, and it can take several safety measures such as high temperature adhesion and stress resistance of the adhesive.

また発明によれば,ブレーキパッドとディスクブレーキの縦方向に分割したエキスパンドメタルを前記バッキングプレート上にコンデンサ式抵抗溶接で分割溶接することで,ブレーキパッドとディスクブレーキの制動摩擦によって双方の摩擦面から発生する磨耗金属粒子または細かい金属片を摩擦限界警告溝に沈下させてブレーキ摺動面からこれらの異物を排除するための縦溝をこの溶接工程中に形成することができ,今まで別工程で摩擦限界警告溝を加工していた作業を簡素化することもできる。 Further, according to the present invention, the expanded metal divided in the vertical direction of the brake pad and the disc brake is divided and welded on the backing plate by capacitor-type resistance welding, so that both friction surfaces are caused by the braking friction between the brake pad and the disc brake. A vertical groove can be formed during this welding process to sink wear metal particles or fine metal pieces generated from the friction limit warning groove and eliminate these foreign substances from the brake sliding surface. It is possible to simplify the work of machining the friction limit warning groove.

また発明によれば,前記分割エキスパンドメタルの溶接後の少なくとも一列目のメッシュ溶接部をラップさせながら,つまり一列目の溶接部を再度電極間で挟み付けて再加圧通電して順次コンデンサ式プロジェクション溶接する。
これによって,電源容量が小さい場合とか電極加圧面が狭い場合は数回溶接を繰り返して一枚板を一体化することが出来る。この場合エキスパンドメタルの接触点が完全に平坦に潰れることがなく,メッシュ材を強固で均一に溶融接合することができる。
Further, according to the present invention, at least the first row of mesh welds after welding of the divided expanded metal is wrapped, that is, the first row of welds are sandwiched again between the electrodes and re-pressurized and energized in order. Projection welding.
As a result, when the power source capacity is small or the electrode pressing surface is narrow, the single plate can be integrated by repeating the welding several times. In this case, the contact point of the expanded metal is not completely flattened, and the mesh material can be firmly and uniformly melt bonded.

本発明によれば,溶接時間が短時間で大電流を流すことが出来るコンデンサ溶接装置により,常に溶接するエキスパンドメタルの突起接触の全面に最適な溶接電流を均等に流すことが出来,短時間の発熱のため熱影響によるバッキングプレートの反り,歪み,エキスパンドメタルの材料変形・潰れが少ないので,母材の機械的性質の損失が少ない。   According to the present invention, an optimum welding current can be made to flow evenly over the entire surface of the expanded metal projection contact that is always welded by a capacitor welding apparatus that can flow a large current in a short time. Due to heat generation, there is little warping of the backing plate due to thermal effects, distortion, and deformation and collapse of the expanded metal material.

本発明は,自動車用ディスクブレーキのブレーキパッドを取付けるための工法に有用であって,バッキングプレートにエキスパンドメタルを重ね合わせて,その重ね合わせて形成された突起状の接触部を抵抗溶接方法の一つであるコンデンサ式プロジェクション溶接方法を採用してエキスパンドメタルの母材形状を完全に平らに潰すことなく,突起状の接触部の潰しを少なくして強固に溶融溶着させる工法である。   INDUSTRIAL APPLICABILITY The present invention is useful for a construction method for mounting a brake pad of an automotive disc brake. An expanded metal is overlapped on a backing plate, and a protruding contact portion formed by the overlap is a resistance welding method. This is a construction method that uses a capacitor-type projection welding method, which does not crush the expanded metal base material completely flatly, and reduces the crushing of the protruding contact portion and makes it melt and weld firmly.

図1はJIS G 3351(エキスパンドメタル)に規定されたメッシュ形状を示す平面図である。記号S,Lは製品の縦方向と横方向の長さである。図2は同じく拡大部分図である。記号T:板厚,W:刻み幅,SW:メッシュ幅方向距離,LW:メッシュ長さ方向距離である。図3は図2A―A断面図であり,バッキングプレートとの重ね合わせ部の突起状の接触部を示す図である。同図の記号h:エキスパンドメタルの高さを示す。
本発明の取付け方法に基づきサンプルを作成して実性能を確認した。
以下に実験値を示す。
FIG. 1 is a plan view showing a mesh shape defined in JIS G 3351 (expanded metal). Symbols S and L are the lengths in the vertical and horizontal directions of the product. FIG. 2 is an enlarged partial view of the same. Symbol T: plate thickness, W: step width, SW: mesh width direction distance, LW: mesh length direction distance. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 and shows a protruding contact portion that overlaps the backing plate. Symbol h in the figure shows the height of the expanded metal.
Based on the mounting method of the present invention, a sample was prepared to confirm the actual performance.
Experimental values are shown below.

・ 被溶接物及び材質
バッキングプレート:材質SAPH440,板厚8mm,板幅86mm
長さ106mm
エキスパンドメタル:材質SPHC 線径0.8mm,幅80mm,
長さ100mm 高さ2mm
・ 溶接条件表
加圧力kN:20〜25,容量kW:15〜20,溶接電流kA:160〜180,
通電時間ms:10〜20
-Workpiece and material Backing plate: Material SAPH440, plate thickness 8mm, plate width 86mm
Length 106mm
Expanded metal: Material SPHC Wire diameter 0.8mm, width 80mm,
Length 100mm Height 2mm
・ Welding condition table Applied pressure kN: 20 to 25, Capacity kW: 15 to 20, Welding current kA: 160 to 180,
Energizing time ms: 10-20

バッキングプレートとエキスパンドメタルを上記の実験値内にて溶接した結果,抵抗溶接方法の一つであるプロジェクション溶接方法によれば,エキスパンドメタル材の全面が均一に潰れが少なく,強固に溶融溶着して一体化することができた(図5参照)。この溶接実験では,幅25mm,長さ80mm寸法の平坦加圧面の電極を使用して行った。エキスパンドメタルを前記バッキングプレート上に重ね合わせ上下電極間で挟みつけ,加圧力20kN,溶接電流164kA,通電時間10ms程度の溶接条件で数回に分けてコンデンサ電源により溶接した。この実験では,一枚のエキスパンドメタルを1回溶接した後,次の溶接で前回溶接した一列目のメッシュをラップさせて分割溶接を行った。この溶接結果によるとエキスパンドメタルの溶接前のメッシュ高さh寸法2mmに対し溶接後のメッシュ高さh寸法が1.4mmないし1.6mmの範囲内で確保できた。溶接後のペンチ剥離テストを行った結果,溶接後のメッシュ高さh寸法基準が1.4mmないし1.6mmの範囲内であれば各突起溶接部に十分な機械的強度が得られた(図6参照)。この実験では電源が少ない容量の場合も同様に分割溶接することで溶接部のペンチ剥離テストを行った結果,溶接品質上,強い剥離強度が得られることが確認できた。   As a result of welding the backing plate and the expanded metal within the above experimental values, according to the projection welding method, which is one of the resistance welding methods, the entire surface of the expanded metal material is less likely to be crushed uniformly and melted and welded firmly. They could be integrated (see FIG. 5). In this welding experiment, an electrode having a flat pressure surface having a width of 25 mm and a length of 80 mm was used. The expanded metal was superimposed on the backing plate and sandwiched between the upper and lower electrodes, and was welded by a capacitor power supply in several times under welding conditions of a pressure of 20 kN, a welding current of 164 kA, and an energization time of about 10 ms. In this experiment, after one expanded metal was welded once, split welding was performed by lapping the mesh of the first row previously welded in the next welding. According to this welding result, the mesh height h dimension after welding of the expanded metal was ensured within the range of 1.4 mm to 1.6 mm with respect to the mesh height h dimension before welding of 2 mm. As a result of the pliers peeling test after welding, sufficient mechanical strength was obtained at each protrusion weld if the mesh height h dimension standard after welding was within the range of 1.4 mm to 1.6 mm (Fig. 6). In this experiment, even when the capacity of the power source was small, the results of a pliers peel test on the welded part by split welding in the same way confirmed that strong peel strength was obtained in terms of weld quality.

図4に示す実物の実験ではエキスパンドメタルをあらかじめ縦方向に3分割したバッキングメタルを等間隔をもって重ねプロジェクション溶接すれば,この溶接工程によって摩擦限界警告溝を加工することができる。この工程では予めメッシュ材を3分割して溶接することで,1枚板毎に溶接時間が短時間で大電流を流すことができる。このエキスパンドメタルの溶接工法はコンデンサ溶接において常に溶接するエキスパンドメタルの全面に最適な溶接電流を均等流すことができ,短時間の発熱のため熱影響によるバッキングプレートの反り・歪み,エキスパンドメタル材の材料変質・潰れが少ないので,母材の機械的性質の損失が少ないことが確認できた。
なお,この溶接実験では,三分割したエキスパンドメタルを分割溶接でテストしたが,重複溶接する場合は1列目をラップして溶接しても複数列をラップさせて溶接しても同様の発明効果が得られるほか,エキスパンドメタル接合部全面を一括同時に溶接することも可能であることは言うまでもない。
In the actual experiment shown in FIG. 4, the friction limit warning groove can be machined by this welding process if projection welding is performed by overlapping the backing metal obtained by dividing the expanded metal in advance in the vertical direction at equal intervals. In this process, the mesh material is divided into three parts and welded in advance, so that a large current can flow in a short time for each sheet. This expanded metal welding method allows the optimum welding current to flow evenly over the entire surface of the expanded metal that is always welded in capacitor welding, and because of the short-time heat generation, warping / distortion of the backing plate due to thermal effects, the material of the expanded metal material It was confirmed that there was little loss of mechanical properties of the base metal because there was little alteration or crushing.
In this welding experiment, the expanded metal divided into three parts was tested by split welding. However, in the case of overlapping welding, the same invention effect can be obtained by welding by wrapping the first row or by wrapping multiple rows. Needless to say, the entire expanded metal joint can also be welded simultaneously.

他の抵抗溶接電源では例えば単相交流電源においては,短時間で大電流を流すことができないため,一次電源のフリッカー等を発生し電源容量に問題が起きた。またインバータ電源においても単相交流電源と同等に短時間で大電流を流すことができないため,バッキングプレートの反りや歪みが大きく,エキスパンドメタルの材料変質や潰れが大きくなって機械的強度が得られなかった。敢えて鋼製エキスパンドメタルを金属板にスポット溶接する従来周知の工法を挙げるならば,たとえば特開昭62−137183号公報に記載された工法がある。   With other resistance welding power sources, for example, with a single-phase AC power source, a large current cannot be flowed in a short time. In addition, the inverter power supply cannot flow a large current in as short a time as a single-phase AC power supply, so the warping and distortion of the backing plate is large, and the expanded metal material is greatly deformed and crushed, resulting in mechanical strength. There wasn't. For example, there is a method described in Japanese Patent Application Laid-Open No. 62-137183, which is a conventionally known method of spot welding steel expanded metal to a metal plate.

この従来の工法はエキスパンドメタルをスポット溶接する個所を溶接に先駆けてプレス加工して完全に平坦にしてから相手板に面接触させた状態で通常のスポット溶接するというもので,母材変形による機械的性質が得られない。これに対し本発明はエキスパンドメタルの機械的特性を活かして相手平面板との接触は突起状の接触点によるもので,しかも母材原形を完全(平坦)に潰すのではなく,突起接触面の潰しを少なくすることで,メッシュ材としての機械的強度を確保することができる。   In this conventional method, the spot where the expanded metal is spot welded is pressed prior to welding to make it completely flat, and then is subjected to normal spot welding in the state of surface contact with the mating plate. Characteristics cannot be obtained. On the other hand, the present invention makes use of the mechanical properties of expanded metal to contact the mating flat plate by a protruding contact point, and does not completely crush the base metal original shape (flat), By reducing crushing, mechanical strength as a mesh material can be secured.

本発明のブレーキパッドの取付け工法では溶接時間が短時間で大電流を流すことができることからエキスパンドメタルの母材原形の潰れが少なく,強固に溶融溶着させることができる。また今回の実験ではバッキングメタルとエキスパンドメタルのコンデンサ式プロジェクション溶接で試作したサンプルの強度検査をペンチ剥離テストで検証した結果,強い剥離強度が得られ,溶接品質向上が確認された。   According to the brake pad mounting method of the present invention, since a large current can be passed in a short time, the expanded metal base material is less crushed and can be melted and welded firmly. In addition, in this experiment, the strength test of a sample made by capacitor projection welding of backing metal and expanded metal was verified by a pliers peel test. As a result, a strong peel strength was obtained and an improvement in welding quality was confirmed.

上記の溶接工程により一体化したエキスパンドメタルは次のパッド成形工程において接着剤を塗布し,金型にビスケット状の混合紛を入れ,数百度で加熱成形を行いパッドの形に組み込まれる。この場合,パッド基材がエキスパンドメタルのメッシュ全域に内部まで浸透することで,パッド素材の内部に金属補強材,つまり鋼製のエキスパンドメタルが埋設されることになる。ブレーキパッドはパッド成形・硬化工程などによる一連の加工工程を経てバッキングプレートに焼き入れ固定される。かくしてブレーキパッに強要される振動力や衝撃力はメッシュ材の網目に沿って細かく分散・吸収されることになり,またブレーキパッドに発生する摩擦熱はパッド内部のエキスパンドメタルによって網目状に細かく伝導・分散され接着力の耐久性を飛躍的に延ばすことができる。 The expanded metal integrated by the welding process described above is applied to the pad in the next pad forming process, a biscuit-like mixed powder is put into the mold, and heat-molded at several hundred degrees to be incorporated into the pad shape. In this case, the pad base material penetrates to the entire area of the expanded metal mesh, so that a metal reinforcing material, that is, a steel expanded metal is embedded in the pad material. The brake pad is tempered and fixed to the backing plate through a series of processing steps such as a pad molding / curing step. Thus vibration force and impact force to be forced into the brake pad is would be finely dispersed and absorbed along the meshes of the mesh material and the frictional heat generated in the brake pads finely reticulated by expanded metal inner pad Conducted and dispersed, the durability of adhesive strength can be greatly extended.

本発明は自動車用ディスクブレーキのブレーキパッド取付け方法について言及したが,コンデンサ式抵抗溶接によって規格製品の鋼製エキスパンドメタルとバッキングプレートとを機械的性質を喪失せずに強固に固定することができるので,ドラムブレーキのほか,航空機,電車などブレーキパッドを必要とする他の分野にも利用することが可能となる。   Although the present invention refers to a method for mounting a brake pad of an automotive disc brake, the standard steel expanded metal and backing plate can be firmly fixed without losing mechanical properties by capacitor-type resistance welding. In addition to drum brakes, it can also be used in other fields that require brake pads such as aircraft and trains.

JIS G 3351(エキスパンドメタル)に規定されたメッシュ形状を示す平面図である。It is a top view which shows the mesh shape prescribed | regulated to JISG3351 (expanded metal). エキスパンドメタルの拡大部分図である。It is an enlarged partial view of expanded metal. 本発明においてバッキングプレートの上にエキスパンドメタルを重ね合わせて形成した重ね部の突起接触状態を示す図である。It is a figure which shows the protrusion contact state of the overlap part formed by overlapping the expanded metal on the backing plate in this invention. 本発明においてバッキングプレートに三分割したエキスパンドメタルを一体化した平面図である。It is a top view which integrated the expanded metal divided into three into the backing plate in this invention. 本発明においてバッキングプレートに1枚エキスパンドメタルを一体化した溶接部外観詳細を示す写真である。It is a photograph which shows the welding part external appearance detail which integrated one sheet of expanded metal with the backing plate in this invention. 本発明において一体化した溶接部の剥離テストした溶接破壊部分を示す写真である。It is a photograph which shows the welding fracture part which carried out the peeling test of the welding part integrated in this invention.

Claims (1)

自動車用ディスクの表面に摩擦材からなるブレーキパッドを押し付けて,回転するディスク面と摩擦材との相対運動によって摩擦制動力を発生させるディスクブレーキに関し,
前記ディスク面に前記ブレーキパッドを接触させる方向に作動するための作動機構に支持されたバッキングプレートに,細長い鋼材を網目状にかみ合わせて構成されたエキスパンドメタルを重ね合わせ,その重ね合わせて形成された突起状の接触部を一対の電極間で挟みつけ,前記電極間に溶接に必要な加圧力を与えると共に溶接電流を流して前記突起状の接触部をプロジェクション溶接して一体化する溶接工程と,
前記溶接工程を経て一体化されたエキスパンドメタルに前記ブレーキパッドを成形・固着するための一連のパッド硬化工程とからディスククブレーキ用パッドを製造するに際し,
前記溶接工程において前記エキスパンドメタルの溶接後のメッシュ高さ寸法は予め実験によって求められた溶接部の機械的強度が得られるメッシュ高さ寸法を所定基準範囲とすること,当該メッシュ高さ寸法基準内に対応する溶接条件の基にコンデンサ電源から短時間の大電流を流して前記突起接触部の全面をプロジェクション溶接すること,これによって前記バッキングプレートに一体化された前記エキスパンドメタルのメッシュ高さ寸法が前記所定基準内に維持されることを特徴とするディスクブレーキ用パッの取付け方法。
A disc brake that presses a brake pad made of a friction material against the surface of an automobile disc and generates a friction braking force by the relative movement of the rotating disc surface and the friction material.
Expanded metal formed by meshing elongated steel materials meshed on a backing plate supported by an operating mechanism for operating in the direction in which the brake pad is brought into contact with the disc surface, and formed by overlapping the stacked metal. A welding process in which a protruding contact portion is sandwiched between a pair of electrodes, a welding pressure is applied between the electrodes, a welding current is passed, and the protruding contact portion is integrated by projection welding.
When manufacturing a disc brake pad from a series of pad curing processes for forming and fixing the brake pad to the expanded metal integrated through the welding process,
In the welding process, the mesh height dimension after welding of the expanded metal is set within a predetermined reference range within a mesh height dimension that provides a mechanical strength of a welded portion obtained in advance by experiments. The entire surface of the protrusion contact portion is projection welded by supplying a large current for a short time from a capacitor power source based on the welding conditions corresponding to the above, whereby the mesh height dimension of the expanded metal integrated with the backing plate can be reduced. mounting method pad for a disc brake, characterized in that it is maintained within the predetermined criterion.
JP2003376410A 2003-11-06 2003-11-06 How to install the disc brake pad Expired - Lifetime JP4240302B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003376410A JP4240302B2 (en) 2003-11-06 2003-11-06 How to install the disc brake pad

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003376410A JP4240302B2 (en) 2003-11-06 2003-11-06 How to install the disc brake pad

Publications (2)

Publication Number Publication Date
JP2005140217A JP2005140217A (en) 2005-06-02
JP4240302B2 true JP4240302B2 (en) 2009-03-18

Family

ID=34687459

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003376410A Expired - Lifetime JP4240302B2 (en) 2003-11-06 2003-11-06 How to install the disc brake pad

Country Status (1)

Country Link
JP (1) JP4240302B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883654A (en) * 2014-03-19 2014-06-25 博深工具股份有限公司 Double-backboard two-level floating brake pad

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5141822B2 (en) * 2009-06-15 2013-02-13 トヨタ自動車株式会社 Braking device and friction material manufacturing method
JP7220077B2 (en) * 2018-12-27 2023-02-09 曙ブレーキ工業株式会社 Brake members and brake parts
CN112555304A (en) * 2020-12-28 2021-03-26 湖州南浔军友叉车有限公司 Brake pad
CN117086378B (en) * 2023-10-19 2023-12-22 江苏吉迈士汽配科技有限公司 Stripping device for brake pad of drum brake

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883654A (en) * 2014-03-19 2014-06-25 博深工具股份有限公司 Double-backboard two-level floating brake pad
CN103883654B (en) * 2014-03-19 2016-01-13 博深工具股份有限公司 Two backboard two-stage floatation type brake pad

Also Published As

Publication number Publication date
JP2005140217A (en) 2005-06-02

Similar Documents

Publication Publication Date Title
Shakil et al. Effect of ultrasonic welding parameters on microstructure and mechanical properties of dissimilar joints
Bakavos et al. Mechanisms of joint and microstructure formation in high power ultrasonic spot welding 6111 aluminium automotive sheet
US8905291B2 (en) Coulomb damping features using ultrasonic welding
JP4240302B2 (en) How to install the disc brake pad
JP2009241136A (en) Series spot or indirect spot welding method for high tensile strength steel sheet
JP6094079B2 (en) Resistance spot welding method
JP2001162388A (en) Method of laser welding for plated steel plate and welding structure
US8448685B2 (en) Bonding carbon-carbon composites through a reactant layer
JP2007175740A (en) Electric current bonding process and apparatus
JP5906618B2 (en) Resistance spot welding method
KR102394629B1 (en) Method for welding steel sheet made by hot stamping
JP6060579B2 (en) Resistance spot welding method
JP5980110B2 (en) Diffusion bonding jig and diffusion bonding method
JPWO2019124465A1 (en) Manufacturing method of resistance spot welded joint
JP2004050280A (en) Projection welding method
JP2011052777A (en) Manufacturing method of belleville spring
JP3736594B2 (en) Aluminum alloy joined body by mechanical clinch and manufacturing method thereof
JP2017140633A (en) Spot welding method
JPH07138767A (en) Surface coating method for metallic material
JP2018069269A (en) Junction device, junction method using the same, and manufacturing method for junction body
JP2007152397A (en) Press forming method and press base stock for press forming
US7393193B1 (en) Techniques for making a metallic product utilizing electric current in a consolidation process
US11969816B2 (en) Plated metal bonding method and plated metal bonding apparatus
JP7382114B2 (en) Spot welding method
WO2024034173A1 (en) Resistance welding device and resistance welding method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050826

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070816

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070821

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071018

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080516

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080715

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20081217

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20081217

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120109

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4240302

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130109

Year of fee payment: 4

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S533 Written request for registration of change of name

Free format text: JAPANESE INTERMEDIATE CODE: R313533

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term