KR100502995B1 - Brake disk for railroad vehicles - Google Patents

Brake disk for railroad vehicles Download PDF

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Publication number
KR100502995B1
KR100502995B1 KR10-1998-0063100A KR19980063100A KR100502995B1 KR 100502995 B1 KR100502995 B1 KR 100502995B1 KR 19980063100 A KR19980063100 A KR 19980063100A KR 100502995 B1 KR100502995 B1 KR 100502995B1
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KR
South Korea
Prior art keywords
main body
friction plate
aluminum
brake disc
brake
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Application number
KR10-1998-0063100A
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Korean (ko)
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KR20000046420A (en
Inventor
최학희
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두산인프라코어 주식회사
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Priority to KR10-1998-0063100A priority Critical patent/KR100502995B1/en
Publication of KR20000046420A publication Critical patent/KR20000046420A/en
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Publication of KR100502995B1 publication Critical patent/KR100502995B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
    • B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/30—Railway vehicles
    • 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
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0008—Ferro
    • F16D2200/0021—Steel
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0026—Non-ferro
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0026—Non-ferro
    • F16D2200/003—Light metals, e.g. aluminium
    • 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
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0034—Materials; Production methods therefor non-metallic
    • F16D2200/0052—Carbon

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

본 발명은 철도차량용 브레이크디스크에 관한 것으로, 특히 브레이크디스크를 알루미늄 또는 알루미늄합금으로 된 베이스재에 세라믹입자를 분산시켜서 만들어진 알루미늄복합재로 된 여러조각의 마찰판(12)을 주철계 주물로 된 본체(11)에 형상끼워맞춤식으로 조립하여 이루어져 조립성 및 보수정비성이 우수하고,마찰부의 내열성, 내마모성 및 내열 균열성을 향상시키고, 무게도 경량화하여 고속철도차량에 적합한 것이다.The present invention relates to a brake disc for a railway vehicle, and in particular, a main body (11) of a cast iron-based casting having a friction plate (12) of several pieces of aluminum composite material made by dispersing ceramic particles in a base material of aluminum or aluminum alloy. It is suitable for high-speed rail vehicles by improving the assembly resistance and repairability, improving the heat resistance, abrasion resistance and thermal crack resistance of the friction part, and light weight.

Description

철도차량용 브레이크디스크{ Brake disk for railroad vehicles}Brake disk for railroad vehicles

본 발명은 철도차량용 브레이크디스크에 관한 것으로, 특히 디스크브레이크의 마찰판 조립구조에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a brake disc for a railway vehicle, and more particularly to a friction plate assembly structure of a disc brake.

철도차량의 브레이크디스크는 차륜의 측면이나 차축에 설치되어 브레이크패드와 마찰하면서 제동력을 발생시킨다. 특히 고속화 추세로 가고 있는 현재의 철도차량에서는 마찰제동력이 우수하면서, 브레이크디스크로서 갖추어야 할 요건인 내마모성, 내열성을 갖춘 브레이크디스크가 절실히 필요하다.The brake disc of a railway vehicle is installed on the side of the wheel or on the axle to generate braking force while friction with the brake pad. In particular, in the current railway vehicles that are going to increase in speed, there is an urgent need for a brake disc having excellent friction braking force and abrasion resistance and heat resistance, which are requirements for a brake disc.

상기 브레이크디스크는 구조상 분류할 때,디스크 전체를 1개의 원반형으로 주조성형한 일체형과, 디스크를 다수개의 원호형 조각으로 성형한 다음, 이들 조각을 서로 조립하여 이루어진 분할형이 있다.When the brake disc is classified in structure, there is an integral type in which the whole disc is cast into one disc, and the disc is formed into a plurality of arc-shaped pieces, and then the pieces are assembled by assembling each other.

일체형 브레이크디스크는 분할형에 비하여 주조공정이 간단하여 제조원가가 저렴하고, 내구성이 우수한 반면, 브레이크디스크가 마모되어 교체할 경우 디스크전체를 교체하여야 하므로 교체시간이 길어 보수유지에 불편한 점이 있다.The integrated brake disc is simpler to manufacture than the split type, so the manufacturing cost is low and the durability is excellent. However, when the brake disc is worn out and replaced, the whole disc needs to be replaced.

이에 비하여 분할형 브레이크디스크는 마모된 부분만 교체하면 되므로 교체시간이 짧아서 보수유지에 편리한 장점이 있는 점이 있으나, 분할면 사이의 틈새로 인하여 열응력 집중현상이 일어나서 열크랙의 발생 및 진행속도가 빨라지는 단점이 있다.On the other hand, the split type brake discs have the advantage of being convenient for maintenance because the replacement time is short because only the worn part needs to be replaced, but the thermal stress concentration phenomenon occurs due to the gap between the split surfaces, which leads to the rapid generation and progress of thermal cracks. Has its drawbacks.

또한 종래 브레이크디스크는 보통 주철재로 되어 있어서 여러 가지 단점을 가지고 있다. 즉 종래 브레이크디스크는 주로 FC25~FC30과 같은 합금주철재로 만들어지거나, 단조강으로 제조된다. 따라서 이러한 합금주철재는 고속주행하는 철도차량에서는 내열성이 좋지않아 열크랙을 발생하는 단점이 있다. In addition, conventional brake discs are usually made of cast iron and have various disadvantages. In other words, the conventional brake disc is mainly made of alloy cast iron, such as FC25 ~ FC30, or made of forged steel. Therefore, such alloy cast iron has a disadvantage that heat cracking is not good in high-speed railroad cars.

이와 같은 주철재 브레이크디스크가 가진 단점을 해소하기위해 알루미늄 복합재인 MMC( Aluminium Metal Metrix Composite)로 만든 브레이크디스크가 개발되었다. 이 알루미늄 복합재로써 제작된 브레이크디스크는 알루미늄 기지에 SiC가 15-20% 함유되어 열전도율과 내마모성이 양호하고, 브레이크디스크를 경량화하는 데 기여를 하였다. 그러나 다량의 SiC를 함유하고 있어 주조성과 가공성이 불량하여 특수장비를 사용하여야 함으로써 제조원가가 상승하는 단점이 있다.In order to solve the drawbacks of the cast iron brake discs, brake discs made of aluminum composite metal matrix (MMC) have been developed. The brake disc made of this aluminum composite contains 15-20% of SiC in the aluminum base, which has good thermal conductivity and wear resistance, contributing to the weight reduction of the brake disc. However, since it contains a large amount of SiC, castability and workability are poor, and thus, special equipment must be used to increase manufacturing costs.

그리고 종래 브레이크디스크는, 도 4 및 도 5에 도시된 바와 같이, 마찰판부(21)등 몸체 전체가 주조로 일체로 성형되어 있어 마찰판부(21)가 부분적으로 마모되거나 크랙이 발생하면 전체를 교체하여야 하는 등 보수정비성이 떨어지는 단점이 있다.4 and 5, the entire brake disk 21 is integrally formed by casting as shown in FIGS. 4 and 5 so that the entire friction disk 21 may be partially worn or cracks may be replaced. There is a disadvantage of poor maintenance.

이에 본 발명은 상기 종래의 브레이크디스크가 가진 문제를 해결하기 위해 고안된 것으로, 내마모성, 내열성 및 내열균열성이 우수하며, 무게도 가벼워 고속철도차량의 브레이크시스템에 적합하는 한편, 정비보수성이 양호한 브레이크디스크를 제공함에 목적이 있다.Accordingly, the present invention is designed to solve the problems of the conventional brake disc, and has excellent wear resistance, heat resistance and crack resistance, and is light in weight, suitable for a brake system of a high-speed railway vehicle, and having a good maintainability. The purpose is to provide.

상기 목적을 달성하기 위한 본 발명은 브레이크디스크를 알루미늄 또는 알루미늄합금으로 된 베이스재에 세라믹입자를 분산시켜서 만들어진 알루미늄복합재로 되어 내열성, 내마모성 및 내열 균열성을 향상시킨 것이다.The present invention for achieving the above object is to improve the heat resistance, abrasion resistance and heat cracking resistance of the brake disc is an aluminum composite material made by dispersing ceramic particles in a base material of aluminum or aluminum alloy.

또한 본 발명은 조립구조를 개선하여 보수유지성을 향상시킨 브레이크디스크를 제공함에 다른 목적이 있는 것이다.In another aspect, the present invention is to provide a brake disk to improve the maintenance structure by improving the assembly structure.

상기 목적을 달성하기 위한 본 발명은 브레이크디스크를 본체와 이 본체의 좌우측면에 각각 형상맞춤식으로 착탈가능하게 조립되는 복수개의 마찰판으로 구성하여 정비보수성을 향상시키고, 상기 마찰판은 알루미늄 또는 알루미늄합금재의 기지에 세라믹입자를 분산시킨 복합재료를 주조에 의해 성형하여 내마모성 및 내열성을 향상시키며 아울러 주조성을 향상시킨 것에 특징이 있는 것이다.The present invention for achieving the above object is composed of a plurality of friction plates that are detachably assembled to the body and the left and right sides of the main body and the brake disk, respectively, to improve the maintainability, the friction plate is a base of aluminum or aluminum alloy material The composite material in which ceramic particles are dispersed in is molded by casting to improve abrasion resistance and heat resistance, and to improve castability.

이하, 본 발명에 따른 철도차량용 브레이크디스크의 실시예를 첨부도면에 따라 상세히 설명한다.Hereinafter, an embodiment of a brake disc for a railway vehicle according to the present invention will be described in detail according to the accompanying drawings.

도 1은 본 발명에 따른 철도차량용 브레이크디스크의 일실시형태를 도시하고 있다. 본 발명에 따른 철도차량용 브레이크디스크는 도 1 및 도 2에 도시된 바와 같이, 본체(11)와 원주방향을 따라 반복하여 배치되면서 각각은 상기 본체(11)의 좌우측면에 각각 형상끼워맞춤식으로 착탈가능하게 조립되는 복수개의 마찰판(12)과, 상기 차축에 보울트로 고정체결되는 결합부(13)로 이루어져 있다.1 shows an embodiment of a brake disc for a railway vehicle according to the present invention. As shown in FIGS. 1 and 2, the brake disk for a railway vehicle according to the present invention is repeatedly arranged along the circumferential direction with the main body 11, and each of them is detachably attached to the left and right sides of the main body 11. It consists of a plurality of friction plates 12 to be assembled as possible, and the coupling portion 13 is fixed to the axle with a bolt.

여기서 상기 본체(11)와 마찰판(12)은 서로 같은 재질로 되거나 이종재질로 될 수도 있다. 바람직하게는 본체(11)는 비철 또는 철계 주조품되고, 이 본체(11)에 결합되는 마찰판(12)은 알루미늄 합금에 입자상의 SiC 등과 같은 세라믹입자를 분산강화시킨 것을 주조로 성형하여 만들어진다.Here, the main body 11 and the friction plate 12 may be made of the same material or different materials. Preferably, the main body 11 is a nonferrous or iron-based cast product, and the friction plate 12 bonded to the main body 11 is formed by casting and casting a dispersion-strengthened ceramic particle such as SiC or the like in an aluminum alloy.

상기 각 마찰판(12)은 파이조각 형태로 되어 있고, 이들 각 마찰판(12)은 안쪽면에 도브테일(DOVE TAIL)형상으로 이루어져, 본체(11)에 형성된 대응 도브테일 결합홈에 형상끼워맞춤식으로 조립된다.Each friction plate 12 is in the form of a pie piece, and each of the friction plates 12 is formed in a dovetail shape on an inner surface thereof, and is assembled in a shape-fitting manner in a corresponding dovetail coupling groove formed in the main body 11. .

상기 마찰판(12)이 본체(11)와 결합하는 여러 가지 구조가 도 3a 내지 도 3에 도시되어 있다. 도 3a에는 마찰판(12)의 내측면이 도브테일형상의 돌기가 형성되고, 본체(11)에는 상기 도브테일형상의 돌기가 끼워져 결합되는 도브테일 형상의 홈이 구비되어 서로 끼워맞춤식으로 조립된다. 마찬가지로 여러 가지 조립형태가 도 3b 및 도 3c에 도시되어 있다. Various structures in which the friction plate 12 is coupled to the main body 11 are illustrated in FIGS. 3A to 3. In FIG. 3A, the inner surface of the friction plate 12 is formed with a dovetail protrusion, and the main body 11 is provided with a dovetail groove in which the dovetail protrusion is fitted and fitted to each other. Various assembly forms are likewise shown in FIGS. 3B and 3C.

도면 부호 14는 조립핀으로서, 마찰판(12)이 제동시 마찰저항을 받아서 인접하는 마찰판(12)쪽으로 미끄럼이동하는 것을 방지하는 역할을 한다. Reference numeral 14 denotes an assembly pin, and serves to prevent the friction plate 12 from sliding toward the adjacent friction plate 12 due to frictional resistance during braking.

상기한 바와 같이 본 발명에 따른 철도차량용 브레이크디스크는 마찰판이 알루미늄복합재로 이루어지므로 무게를 경량화할 수 있어, 고속철도차량에 적합하고, 또한 제동시 발생되는 마찰열에 의한 균열을 억제할 수 있어, 내마모성 및 내균열성을 향상시킬 수 있다. 그리고 마찰판을 여러조각으로 분리제작한 다음, 그 마찰판을 본체위에 조립한 구조로 되어 있으므로 마모정도가 심한 부분을 부분적으로 교체할 수 있으며, 교체시간도 줄일 수 있어 보수정비성이 우수하다.As described above, the brake disc for railroad cars according to the present invention can reduce the weight due to the friction plate made of aluminum composite material, which is suitable for high-speed railway vehicles, and can suppress cracking caused by frictional heat generated during braking, It can improve the crack resistance. In addition, since the friction plate is separated and manufactured by several pieces, the friction plate is assembled on the main body, so that the parts with high wear can be partially replaced, and the replacement time can be shortened, so the maintenance is excellent.

도 1은 본 발명에 따른 브레이크디스크의 평면도,1 is a plan view of a brake disc according to the present invention;

도 2는 도 1의 "A-A"선 단면도,2 is a cross-sectional view taken along the line “A-A” of FIG. 1;

도 3는 도 2의 부분 확대도로서,마찰판의 여러 가지 조립구조를 각각 도시한 도면,3 is a partially enlarged view of FIG. 2, illustrating various assembly structures of the friction plate, respectively;

(a)는 마찰판 조립구조의 제1실시예,(a) is the first embodiment of the friction plate assembly structure,

(b)는 마찰판 조립구조의 제2실시예,(b) is a second embodiment of the friction plate assembly structure,

(c)는 마찰판 조립구조의 제3실시예,(c) is a third embodiment of the friction plate assembly structure,

도 4는 종래 브레이크디스크의 평면도4 is a plan view of a conventional brake disc

도 5는 도 4의 A-A선을 따라 절단하여 도시한 도면이다.5 is a cross-sectional view taken along the line A-A of FIG.

※ 도면의 주요부분에 대한 부호의 설명※※ Explanation of code about main part of drawing ※

10: 본 발명에 따른 철도차량용 브레이크디스크10: brake disc for railway vehicle according to the present invention

11: 본체 11a: 마찰부11: body 11a: friction part

12: 마찰판 13: 차축 결합부12: Friction plate 13: Axle coupling

13a: 보울트 구멍 14: 조립핀13a: bolt hole 14: assembly pin

Claims (6)

본체(11)와, 이 본체(11)의 좌우측면에 각각 끼워맞춤식으로 착탈가능하게 조립되는 다수개의 마찰판(12) 및 상기 마찰판(12)의 내측 원주방향을 따라 형성되어 차축에 결합되는 결합부(13)로 이루어진 철도차량용 브레이크디스크.The main body 11, a plurality of friction plates 12 are detachably assembled to each of the left and right sides of the main body 11 and the coupling portion formed along the inner circumferential direction of the friction plate 12 and coupled to the axle shaft. Brake disk for railway vehicle consisting of (13). 제 1 항에 있어서, 상기 본체(11)와 마찰판(12)은 동종재질로 이루어진 것을 특징으로 하는 철도차량용 브레이크디스크.2. The brake disc according to claim 1, wherein the main body (11) and the friction plate (12) are made of the same material. 제 1 항에 있어서, 상기 본체(11)와 상기 마찰판(12)은 서로 이종재질로 된 것을 특징으로 하는 철도차량용 브레이크디스크.2. The brake disc according to claim 1, wherein the main body (11) and the friction plate (12) are made of different materials from each other. 제 3 항에 있어서, 상기 본체(11)는 알루미늄 또는 알루미늄합금으로 되고, 상기 마찰판(12)은 알루미늄 또는 알루미늄합금에 세라믹입자를 분산강화시킨 알루미늄 복합재료로 된 것을 특징으로 하는 철도차량용 브레이크디스크.4. The brake disc according to claim 3, wherein the main body (11) is made of aluminum or an aluminum alloy, and the friction plate (12) is made of an aluminum composite material in which ceramic particles are dispersed and strengthened in aluminum or an aluminum alloy. 제 3 항에 있어서, 상기 본체(11)는 합금주철 또는 주강품으로 되고, 상기 마찰판(12)은 알루미늄 또는 알루미늄합금에 세라믹입자를 분산강화시킨 알루미늄 복합재료로 된 것을 특징으로 하는 철도차량용 브레이크디스크.4. The brake disc according to claim 3, wherein the main body (11) is made of cast iron or cast steel, and the friction plate (12) is made of an aluminum composite material in which ceramic particles are dispersed and strengthened in aluminum or an aluminum alloy. 제 3 항에 있어서, 상기 본체(11)는 철계 또는 비철계의 주조품으로 되고, 상기 마찰판(12)은 탄소-탄소 복합재로 된 것을 특징으로 하는 철도차량용 브레이크디스크.4. The brake disc according to claim 3, wherein the main body (11) is a cast iron or non-ferrous cast, and the friction plate (12) is made of a carbon-carbon composite material.
KR10-1998-0063100A 1998-12-31 1998-12-31 Brake disk for railroad vehicles KR100502995B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09250577A (en) * 1996-03-14 1997-09-22 Honda Motor Co Ltd Disk brake device
JPH11325136A (en) * 1998-05-19 1999-11-26 Sumitomo Metal Ind Ltd Brake disk and fastening method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09250577A (en) * 1996-03-14 1997-09-22 Honda Motor Co Ltd Disk brake device
JPH11325136A (en) * 1998-05-19 1999-11-26 Sumitomo Metal Ind Ltd Brake disk and fastening method thereof

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