JPH08121513A - Disk rotor of disk brake for vehicle - Google Patents
Disk rotor of disk brake for vehicleInfo
- Publication number
- JPH08121513A JPH08121513A JP26271594A JP26271594A JPH08121513A JP H08121513 A JPH08121513 A JP H08121513A JP 26271594 A JP26271594 A JP 26271594A JP 26271594 A JP26271594 A JP 26271594A JP H08121513 A JPH08121513 A JP H08121513A
- Authority
- JP
- Japan
- Prior art keywords
- sliding contact
- contact part
- contact portion
- peripheral side
- disk
- 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.)
- Granted
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本考案は、自動車や自動二・三輪
車等の車両に用いられるディスクブレーキ用のディスク
ロータであって、詳しくは外周側のライニング摺接部に
複数の貫通孔を有するディスクロータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc rotor for a disc brake used in vehicles such as automobiles and motorcycles, and more specifically, a disc having a plurality of through holes in a lining sliding contact portion on an outer peripheral side. Regarding the rotor.
【０００２】[0002]
【従来の技術】自動車等の車両用ディスクブレーキに用
いられるディスクロータとして、例えば、特開昭６２−
２６６２３３号公報に示されるものがある。このディス
クロータは、摩擦パッドのライニングが摺接する外周側
のライニング摺接部に、複数の貫通孔を形成したもの
で、これら複数の貫通孔によって、ディスクロータの軽
量化や冷却性及び排水性と、制動時に生じる微細な摩耗
分のクリーニング性等を向上して、安定したブレーキ性
能が得られるようにしている。2. Description of the Related Art Disc rotors used for disc brakes for vehicles such as automobiles are disclosed in, for example, Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent No. 266233. This disc rotor has a plurality of through-holes formed in the lining sliding contact portion on the outer peripheral side with which the lining of the friction pad slides. The plurality of through-holes reduce the weight of the disc rotor and improve cooling and drainage properties. By improving the cleaning property of minute wear generated during braking, stable braking performance can be obtained.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上述の
ディスクロータは、一般に鋳鉄や鋼板，或いはステンレ
ス鋼板等の熱伝導性の高い金属材料によって形成される
ため、上述の構成によって冷却を早めることはできて
も、ライニング摺接部自体が制動熱で高温となることは
避けられず、逆に貫通孔の形成がライニング摺接部の一
部に熱歪みを生じる原因となる。However, since the above-mentioned disc rotor is generally formed of a metal material having high thermal conductivity such as cast iron, a steel plate, or a stainless steel plate, cooling can be accelerated by the above-described structure. However, it is inevitable that the lining sliding contact portion itself becomes high in temperature due to braking heat, and conversely, the formation of the through hole causes thermal distortion in a part of the lining sliding contact portion.
【０００４】図６は、ディスクロータのライニング摺接
部と温度上昇との関係図を示し、ライニング摺接部のデ
ィスク半径方向幅を三等分した場合に、中央摺接部の温
度が内外の摺接部よりも高くなっており、上述の熱歪み
は、この中央摺接部に設けられた貫通孔の近傍に発生し
ている。FIG. 6 is a diagram showing the relationship between the lining sliding contact portion of the disk rotor and the temperature rise. When the width of the lining sliding contact portion in the radial direction of the disk is divided into three equal parts, the temperature of the central sliding contact portion is inside and outside. The thermal strain is higher than that of the sliding contact portion, and the above-mentioned thermal strain occurs near the through hole provided in the central sliding contact portion.
【０００５】そこで、この原因を考察してみると、上述
の３つの摺接部では、表面積の違いをあてはめることが
できないため、制動熱の移動をディスク半径方向でみる
と、内周側摺接部では、その内側に質量の大きなロータ
ハブが連続するため、内周側摺接部の制動熱は、ヒート
マスの大きな内周側へ広く拡散して行き、また外周側摺
接部では、その外側で外気に晒される外周面から、制動
熱が大気へ放散されて行くと考えられる。Considering the cause, the difference in surface area cannot be applied to the above-mentioned three sliding contact portions. Therefore, when the movement of the braking heat is viewed in the radial direction of the disk, the sliding contact on the inner peripheral side is made. Since the rotor hub with a large mass is continuous inside the portion, the braking heat of the inner peripheral side sliding contact portion diffuses widely to the inner peripheral side with a large heat mass, and at the outer peripheral side sliding contact portion It is considered that the braking heat is dissipated to the atmosphere from the outer peripheral surface exposed to the outside air.
【０００６】これに対して中央摺接部では、ロータハブ
や外周面から離れていて、制動熱が内周側摺接部や外周
側摺接部を通してディスクロータの内外へ伝達されて行
くため、内外の摺接部に較べて冷却性が悪く、冷却速度
の速い内周側摺接部と外周側摺接部の熱収縮が、中央摺
接部にディスク半径方向線上を内外逆方向へ引っ張るよ
うに作用し、中央摺接部の内でも特に貫通孔の形成で脆
弱となった貫通孔の近傍部分に応力が集中して、熱歪み
が生じるものと思われる。On the other hand, the central sliding contact portion is separated from the rotor hub and the outer peripheral surface, and the braking heat is transmitted to the inside and the outside of the disk rotor through the inner peripheral side sliding contact portion and the outer peripheral side sliding contact portion. The cooling performance is worse than that of the sliding contact part, and the thermal contraction of the inner peripheral side sliding contact part and the outer peripheral side sliding contact part, which has a high cooling speed, causes the central sliding contact part to pull in the inner and outer reverse directions on the radial line of the disk. It is considered that the stress acts in the central sliding contact portion, particularly stress concentrates in the vicinity of the through hole that is weakened due to the formation of the through hole, causing thermal strain.
【０００７】そこで本発明は、貫通孔を用いてその特性
を確保しながら、熱歪みの発生を防止して、耐久性を高
めた車両用ディスクブレーキのディスクロータを提供す
ることを目的としている。Therefore, an object of the present invention is to provide a disk rotor for a vehicle disk brake, in which the through hole is used to secure its characteristics while preventing the occurrence of thermal distortion and improving the durability.
【０００８】[0008]
【課題を解決するための手段】上述の目的に従い、第１
発明では、外周部に、摩擦パッドのライニングが摺接す
るライニング摺接部を有する車両用ディスクブレーキの
ディスクロータにおいて、前記ライニング摺接部をディ
スク半径方向に三等分して、内外にリング状の内周側摺
接部と中央摺接部と外周側摺接部とを設定すると共に、
中央摺接部を除く内周側摺接部と外周側摺接部に、それ
ぞれ複数の貫通孔を形成している。According to the above-mentioned object, the first
According to the invention, in the disc rotor of a vehicle disc brake having a lining sliding contact portion with which the lining of the friction pad slides in contact with the outer peripheral portion, the lining sliding contact portion is divided into three equal parts in the disc radial direction, and ring-shaped inside and outside. While setting the inner peripheral side sliding contact part, the central sliding contact part and the outer peripheral side sliding contact part,
A plurality of through holes are formed in each of the inner peripheral side sliding contact part and the outer peripheral side sliding contact part except the central sliding contact part.
【０００９】また第２発明では、中央摺接部の両面に複
数の窪み孔を形成し、更に第３発明では、中央摺接部の
一側面の窪み孔と他側面の窪み孔との位相を偏位させ
る。第２，第３発明の窪み孔は、円形や多角形或いは長
形等の形状で形成される。Further, in the second invention, a plurality of recessed holes are formed on both surfaces of the central sliding contact portion, and in the third invention, the phase of the recessed hole on one side surface of the central sliding contact portion and the recessed hole on the other side surface is set. Deviate. The recessed holes of the second and third inventions are formed in a shape such as a circle, a polygon or an elongated shape.
【００１０】[0010]
【作用】第１発明の構成によれば、貫通孔を省略した中
央摺接部では強度的に脆弱な部分がなくなるので、中央
摺接部に内周側摺接部と外周側摺接部の熱収縮がディス
ク半径方向線上を内外逆方向へ作用した場合に、高い剛
性力で熱歪みを抑制するようになる。According to the structure of the first aspect of the present invention, since the central sliding contact portion where the through hole is omitted does not have a fragile portion in terms of strength, the central sliding contact portion has the inner peripheral side sliding contact portion and the outer peripheral side sliding contact portion. When the heat shrinkage acts on the radial line of the disc in the inner and outer opposite directions, the high strain force suppresses the thermal strain.
【００１１】また第２発明では、中央摺接部に形成され
た窪み孔の底部に周辺へつながる底壁が残される。従っ
て、中央摺接部に窪み孔を形成するにも拘らず、窪み孔
の底壁によって窪み孔近傍の剛性力が確保されるので、
内周側摺接部と外周側摺接部の熱収縮がディスク半径方
向線上を内外逆方向へ作用しても、中央摺接部の窪み孔
周辺に熱歪みが生じにくい。Further, in the second aspect of the invention, the bottom wall connected to the periphery is left at the bottom of the recessed hole formed in the central sliding contact portion. Therefore, even though the recessed hole is formed in the central sliding contact portion, the rigidity of the vicinity of the recessed hole is ensured by the bottom wall of the recessed hole.
Even if the thermal contraction of the inner peripheral side sliding contact portion and the outer peripheral side sliding contact portion acts in the inner and outer reverse directions on the radial line of the disk, thermal distortion is unlikely to occur around the recessed hole of the central sliding contact portion.
【００１２】更に、中央摺接部で両側面の窪み孔の位相
を偏位させる第３発明では、両側面の窪み孔を対向して
設ける場合に較べて、底壁の厚さを確保できる。Further, in the third aspect of the present invention in which the phase of the recessed holes on both side surfaces is offset at the central sliding contact portion, the thickness of the bottom wall can be secured as compared with the case where the recessed hole portions on both side surfaces are provided facing each other.
【００１３】[0013]
【実施例】以下、本発明の各実施例を図面に基づいて説
明する。図１は本発明の第１実施例を示すもので、ディ
スクロータ１は、ロータハブ２の外周に、リング状のロ
ータベース３を複数のリベット４にてディスク軸方向へ
移動可能に取付けしたフローティングタイプで、ロータ
ハブ２及びロータベース３は、いずれも鋳鉄や鋼板或い
はステンレス鋼板等の金属板によって形成されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment of the present invention. A disk rotor 1 is a floating type in which a ring-shaped rotor base 3 is attached to an outer periphery of a rotor hub 2 by a plurality of rivets 4 so as to be movable in the disk axial direction. The rotor hub 2 and the rotor base 3 are each formed of a metal plate such as cast iron, a steel plate, or a stainless steel plate.
【００１４】ロータハブ２には、中央部にアクスル挿通
孔５が形成され、その外周に複数の車体取付け孔６が穿
設されている。また、ロータハブ２の外周側とロータベ
ース３の内周側には、扇形や滴形等の大形の肉抜き孔
７，８が形成されていて、ディスクロータ１の大幅な軽
量化が図られている。An axle insertion hole 5 is formed in the center of the rotor hub 2, and a plurality of vehicle body mounting holes 6 are formed on the outer periphery thereof. Further, large-sized lightening holes 7 and 8 having a fan shape or a drop shape are formed on the outer peripheral side of the rotor hub 2 and the inner peripheral side of the rotor base 3, so that the disc rotor 1 can be significantly reduced in weight. ing.
【００１５】ロータベース３の外周側は、図示しない摩
擦パッドのライニングが摺接するライニング摺接部９と
なっており、このライニング摺接部９をディスク半径方
向に３等分して、内外にリング状の内周側摺接部９ａと
中央摺接部９ｂと外周側摺接部９ｃとを設定した場合
に、内周側摺接部９ａには複数の小円形の貫通孔１０
を、また外周側摺接部９ｃには同じく複数の小円形の貫
通孔１１を、それぞれ一定のパターンで設けており、こ
れら貫通孔１０，１１によって、ディスクロータ１の軽
量化や冷却性，排水性，クリーニング性を向上して、安
定したブレーキ性能が得られるようにしている。On the outer peripheral side of the rotor base 3, there is formed a lining sliding contact portion 9 with which a lining of a friction pad (not shown) is in sliding contact. The lining sliding contact portion 9 is divided into three equal parts in the radial direction of the disc, and rings are formed inside and outside. When the inner peripheral side sliding contact portion 9a, the central sliding contact portion 9b, and the outer peripheral side sliding contact portion 9c are set, the inner peripheral side sliding contact portion 9a has a plurality of small circular through holes 10.
In addition, a plurality of small circular through holes 11 are also provided in the outer peripheral side sliding contact portion 9c in a fixed pattern, and these through holes 10 and 11 reduce the weight of the disk rotor 1 and provide cooling and drainage. It improves the cleaning performance and cleaning performance so that stable braking performance can be obtained.
【００１６】また、中央摺接部９ｂでは、内周側摺接部
９ａと外周側摺接部９ｃとに形成した貫通孔が省かれて
おり、中央摺接部９ｂをムク材のままとすることによっ
て、中央摺接部９ｂ全体の剛性力を均一に高めている。Further, in the central sliding contact portion 9b, the through holes formed in the inner peripheral side sliding contact portion 9a and the outer peripheral side sliding contact portion 9c are omitted, and the central sliding contact portion 9b is made of solid material. This uniformly increases the rigidity of the central sliding contact portion 9b.
【００１７】このように構成される本実施例で制動作用
が行なわれると、摩擦パッドのライニングと摺接するラ
イニング摺接部９の全体に高い制動熱が発生する。この
制動熱は、３つの摺接部９ａ，９ｂ，９ｃのそれぞれの
両表面から大気へ放散される以外に、内周側摺接部９ａ
では、その内側に連続するロータベース３の内周側やロ
ータハブ２へ広く拡散して行き、また外周側摺接部９ｃ
では、外周面３ｅから大気へ放散されて行く。When the braking operation is performed in this embodiment having the above-described structure, high braking heat is generated in the entire lining sliding contact portion 9 that makes sliding contact with the lining of the friction pad. This braking heat is dissipated to the atmosphere from both surfaces of each of the three sliding contact portions 9a, 9b, 9c, as well as the inner peripheral side sliding contact portion 9a.
Then, it spreads widely to the inner peripheral side of the rotor base 3 and the rotor hub 2 which continue to the inside thereof, and the outer peripheral side sliding contact portion 9c.
Then, it is diffused into the atmosphere from the outer peripheral surface 3e.
【００１８】更に、中央摺接部９ｂの制動熱は、内周側
摺接部９ａと外周側摺接部９ｃを通してディスクロータ
１の内外へ伝達されて行くが、内外の摺接部９ａ，９ｃ
に較べると冷却速度が遅いため、冷却速度の速い内周側
摺接部９ａと外周側摺接部９ｃの熱収縮によって内外か
ら引っ張りを受けるが、中央摺接部９ｂでは貫通孔を省
いて剛性力を均一に高めていて、局部的な脆弱部分をな
くしているので、熱歪みの発生が有効に抑制される。Further, the braking heat of the central sliding contact portion 9b is transmitted to the inside and outside of the disk rotor 1 through the inner peripheral sliding contact portion 9a and the outer peripheral sliding contact portion 9c, but the inner and outer sliding contact portions 9a, 9c are also transferred.
Since the cooling speed is slower than that of the above, the inner sliding contact portion 9a and the outer sliding contact portion 9c, which have a faster cooling speed, are pulled from the inside and outside by thermal contraction, but the central sliding contact portion 9b is rigid by omitting the through hole. Since the force is uniformly increased and the local weak portion is eliminated, the occurrence of thermal strain is effectively suppressed.
【００１９】本実施例は、ディスクロータ１のライニン
グ摺接部９のうち、内周側摺接部９ａと外周側摺接部９
ｃに小円形の貫通孔１０，１１をそれぞれ複数個設け
て、ディスクロータ１の軽量化や冷却性等の向上を図り
つつ、中央摺接部９ｂでは熱歪みを有効に抑制するの
で、安定した制動力を長期間に亙って発揮することがで
きる。In this embodiment, of the lining sliding contact portion 9 of the disk rotor 1, the inner peripheral sliding contact portion 9a and the outer peripheral sliding contact portion 9 are provided.
By providing a plurality of small circular through holes 10 and 11 in c respectively, it is possible to reduce the weight of the disk rotor 1 and to improve the cooling performance, etc., and at the same time, the central sliding contact portion 9b effectively suppresses thermal strain, so that it is stable. The braking force can be exerted over a long period of time.
【００２０】図２及び図３は、本発明の第２実施例を示
すもので、内周側摺接部９ａと外周側摺接部９ｃには、
小円形の貫通孔１０，１１が上述の第１実施例と同様に
設けられ、また中央摺接部９ｂには、小円形に窪み孔２
０が複数設けられている。2 and 3 show a second embodiment of the present invention, in which the inner peripheral side sliding contact portion 9a and the outer peripheral side sliding contact portion 9c are
Small circular through holes 10 and 11 are provided in the same manner as in the above-described first embodiment, and the central sliding contact portion 9b has a small circular recessed hole 2.
A plurality of 0s are provided.
【００２１】上記窪み孔２０は、中央摺接部９ｂの一側
面と他側面からディスク周方向へ交互に、ライニング摺
接部９の厚さの凡そ半分の深さで穿たれた１つづつを１
組とし、該１組の窪み孔２０，２０の位相を、ディスク
半径方向線Ｒから略４５度方向に偏位させると共に、内
周側摺接部９ａの２つの貫通孔１０，１０と、外周側摺
接部９ｃの貫通孔１１とを含む５つが一直線となるよう
に配列されている。The recessed holes 20 are formed alternately from one side surface and the other side surface of the central sliding contact portion 9b in the circumferential direction of the disk at a depth of about half the thickness of the lining sliding contact portion 9. 1
As a set, the phase of the one set of the recessed holes 20, 20 is deviated in the direction of approximately 45 degrees from the disk radial direction R, and the two through holes 10, 10 of the inner peripheral side sliding contact portion 9a and the outer peripheral Five of the side sliding contact portions 9c including the through holes 11 are arranged in a straight line.
【００２２】窪み孔２０の底部には、その周辺に連続し
てつながる底壁２１が、ライニング摺接部９の残りの半
分の厚さで残されており、窪み孔２０と底壁２１の１組
は、ディスクロータ１の中心Ｏとを結ぶディスク半径方
向線Ｒで見た場合に、上記した一直線状の配列から、他
の貫通孔１０，１１や窪み孔２０のいずれとも重複しな
いようになっている。At the bottom of the recessed hole 20, a bottom wall 21 which is continuously connected to the periphery of the recessed hole 20 is left with a thickness half that of the other part of the lining sliding contact portion 9. One of the recessed hole 20 and the bottom wall 21 is left. When viewed along a disc radial direction R connecting the center O of the disc rotor 1, the set does not overlap any of the other through holes 10 and 11 and the recessed hole 20 because of the above-described straight line arrangement. ing.
【００２３】本実施例は、中央摺接部９ｂの両側面に、
複数の窪み孔２０をライニング摺接部９の厚さの凡そ半
分の深さで交互に形成して、内外の貫通孔１０，１１と
共にディスクロータ１の軽量化や冷却性，クリーニング
性等が尚一層向上する。更に、一側面の窪み孔２０と他
側面の窪み孔２０の位相をディスク半径方向線Ｒから略
４５度の方向に偏位したことにより、各窪み孔２０の底
壁２１をライニング摺接部９の残りの半分の厚さで設定
できるので、窪み孔２０周辺の剛性力を充分に確保で
き、内周側摺接部９ａと外周側摺接部９ｃの熱収縮力
が、ディスク半径方向線Ｒ上を内外逆方向へ作用して
も、底壁２１が熱収縮による応力にもよく堪えるので、
窪み孔２０の周辺に熱歪みが生じにくい。In this embodiment, on both side surfaces of the central sliding contact portion 9b,
The plurality of recessed holes 20 are alternately formed at a depth of about half the thickness of the lining sliding contact portion 9 to reduce the weight of the disc rotor 1 as well as the inner and outer through holes 10 and 11, and the cooling and cleaning properties are still low. Further improve. Further, by displacing the phases of the recessed holes 20 on one side surface and the recessed holes 20 on the other side surface in the direction of approximately 45 degrees from the radial line R of the disk, the bottom wall 21 of each recessed hole 20 is lined with the sliding contact portion 9. Since the thickness can be set with the thickness of the other half, the rigidity force around the recessed hole 20 can be sufficiently secured, and the heat shrinkage force of the inner peripheral side sliding contact portion 9a and the outer peripheral side sliding contact portion 9c can be set to the radial line R of the disk. Since the bottom wall 21 can withstand the stress due to thermal contraction even if the top is applied in the opposite direction,
Thermal distortion is unlikely to occur around the recess hole 20.
【００２４】更に本実施例では、１組の窪み孔２０，２
０を、内外の貫通孔１０，１０，１１と共に斜め方向へ
一直線上に配列したことにより、１組の窪み孔２０と底
壁２１は、熱収縮力が作用するディスク半径方向線Ｒ
で、他の貫通孔１０，１１や窪み孔２０のいずれとも重
複することがないから、熱収縮力に対する抗力はより一
層高いものとなる。Further, in this embodiment, a pair of recess holes 20 and 2 are provided.
By arranging 0 with the through holes 10, 10 and 11 inside and outside in a straight line in a diagonal direction, one set of the recessed holes 20 and the bottom wall 21 has a disk radial direction R on which the heat shrinkage force acts.
Then, since it does not overlap with any of the other through holes 10 and 11 and the recessed hole 20, the resistance force against the heat shrinkage force is further increased.
【００２５】図４及び図５は、本発明の第３実施例と第
４実施例を示しており、両実施例では、長円形の窪み孔
３０，４０が中央摺接部９ｂに複数個づつ設けられてお
り、この窪み孔３０，４０の設定以外は、上述の第１，
第２実施例と同様の構成となっている。FIGS. 4 and 5 show a third embodiment and a fourth embodiment of the present invention. In both embodiments, a plurality of oval recessed holes 30 and 40 are provided in the central sliding contact portion 9b. It is provided, except for the setting of the recess holes 30 and 40,
It has the same configuration as that of the second embodiment.
【００２６】図４の第３実施例では、窪み孔３０がディ
スク半径方向線Ｒに沿って放射状に配設され、また図５
の第４実施例では、更に長円の窪み孔４０が、ディスク
半径方向線Ｒから略４５度に傾斜して配設されている。
窪み孔３０，４０は、中央摺接部９ｂの一側面と他側面
とに、ディスク周方向へ交互に形成され、またそれぞれ
の底部に設定された底壁３１，４１が、窪み孔３０，４
０周辺の剛性力を確保している。In the third embodiment of FIG. 4, the recessed holes 30 are arranged radially along the radial line R of the disk, and FIG.
In the fourth embodiment of the present invention, a further oval recessed hole 40 is arranged at an angle of about 45 degrees from the radial line R of the disk.
The recessed holes 30 and 40 are formed alternately on one side surface and the other side surface of the central sliding contact portion 9b in the disk circumferential direction, and the bottom walls 31 and 41 set on the bottoms of the recessed holes 30 and 4 are respectively formed.
The rigidity around 0 is secured.
【００２７】上述の第３，第４実施例では、窪み孔３
０，４０に長円形を採用したことにより、軽量化や冷却
性に対する効果が高く、特に第４実施例の窪み孔４０で
は、斜め方向の配置により長円形を一層長く設定でき
て、軽量化や冷却性等に一層高い効果が得られる。In the above-mentioned third and fourth embodiments, the recessed hole 3
By adopting the oval shape for 0 and 40, the effect on weight reduction and cooling performance is high, and in particular, in the recessed hole 40 of the fourth embodiment, the oval shape can be set longer by the oblique arrangement, and the weight reduction and A higher effect can be obtained on the cooling property and the like.
【００２８】尚、中央摺接部の窪み孔は、一側面と他側
面とで偏位して設けることにより、底壁の厚さを充分に
確保できて好ましいが、窪み孔の底壁を設定できれば、
中央摺接部の両面から窪み孔を対向して設けても差支え
ない。また窪み孔は、多角形や錐形等の他形状であって
もよく、ディスクブレーキ形状も、ロータハブとロータ
ベースを一体化した一枚板でもよい。It is preferable that the recessed hole in the central sliding contact portion is provided so as to be offset from one side surface to the other side surface so that the thickness of the bottom wall can be sufficiently secured, but the bottom wall of the recessed hole is set. if you can,
It does not matter if the recessed holes are provided facing each other from both sides of the central sliding contact portion. The recessed hole may have another shape such as a polygonal shape or a conical shape, and the disc brake shape may be a single plate in which the rotor hub and the rotor base are integrated.
【００２９】[0029]
【発明の効果】本発明に係る車両用ディスクブレーキの
ディスクロータは、外周部のライニング摺接部をディス
ク半径方向に三等分して、内外にリング状の内周側摺接
部と中央摺接部と外周側摺接部とを設定し、内周側摺接
部と外周側摺接部に、それぞれ複数の貫通孔を形成した
ことにより、ディスクロータの軽量化や冷却性，排水
性，クリーニング性等を向上しつつ、中央摺接部では貫
通孔を省略して中央摺接部全体の剛性力を均一に高める
ので、中央摺接部の熱歪みを有効に抑制して、安定した
制動力を長期間に亙って発揮することができる。The disc rotor of the disc brake for a vehicle according to the present invention divides the lining sliding contact portion of the outer peripheral portion into three equal parts in the radial direction of the disc, and the inner and outer ring-shaped sliding contact portions and the central sliding portion. By setting the contact part and the outer peripheral side sliding contact part and forming a plurality of through holes in the inner peripheral side sliding contact part and the outer peripheral side sliding contact part respectively, the weight reduction of the disk rotor, the cooling property, the drainage property, While improving the cleaning performance, the through hole is omitted in the central sliding contact part and the rigidity of the entire central sliding contact part is increased uniformly, so that thermal distortion of the central sliding contact part is effectively suppressed and stable control is achieved. Power can be exerted over a long period of time.
【００３０】また、中央摺接部の両面に複数の窪み孔を
形成することにより、ディスクロータの軽量化や冷却性
等を高めながら、窪み孔の底壁によって窪み孔周辺の剛
性力を確保して、熱歪みを有効に抑制することができ
る。更に、上述の窪み孔を中央摺接部の一側面と他側面
とで位相を偏位させることにより、窪み孔の底壁に充分
な厚さを確保できて、窪み孔周辺の剛性力をより一層高
めることができる。Further, by forming a plurality of recessed holes on both sides of the central sliding contact portion, the rigidity of the periphery of the recessed holes is secured by the bottom wall of the recessed holes while improving the weight reduction and cooling of the disk rotor. Thus, thermal strain can be effectively suppressed. Further, by displacing the phase of the above-mentioned recessed hole between one side surface and the other side surface of the central sliding contact portion, a sufficient thickness can be secured in the bottom wall of the recessed hole, and the rigidity around the recessed hole can be further improved. It can be further enhanced.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の第１実施例を示すディスクロータの正
面図FIG. 1 is a front view of a disk rotor showing a first embodiment of the present invention.
【図２】本発明の第２実施例を示すディスクロータの半
分の正面図FIG. 2 is a front view of a half of a disk rotor showing a second embodiment of the present invention.
【図３】本発明の第２実施例を示す図２のIII −III 断
面図FIG. 3 is a sectional view taken along line III-III of FIG. 2 showing a second embodiment of the present invention.
【図４】本発明の第３実施例を示すディスクロータの半
分の正面図FIG. 4 is a front view of a half of a disk rotor showing a third embodiment of the present invention.
【図５】本発明の第４実施例を示すディスクロータの半
分の正面図FIG. 5 is a front view of a half of a disk rotor showing a fourth embodiment of the present invention.
【図６】ディスクロータのライニング摺接部と温度上昇
との関係図FIG. 6 is a relationship diagram between a lining sliding contact portion of a disk rotor and a temperature rise.
１…ディスクロータ ２…ロータハブ ３…ロータベース ５…アクスル挿通孔 ６…車体取付け孔 ７，８…肉抜き孔 ９…ライニング摺接部 ９ａ…内周側摺接部 ９ｂ…中央摺接部 ９ｃ…外周側摺接部 １０…内周側摺接部９ａに形成された貫通孔 １１…外周側摺接部９ｂに形成された貫通孔 ２０…中央摺接部９ｂに形成された小円形の窪み孔 ２１…窪み孔２０の底壁 ３０，４０…長円形の窪み孔 ３１…窪み孔３０の底壁 ４１…窪み孔４０の底壁 Ｌ…ディスク半径方向線 Ｏ…ディスクロータ１の中心 DESCRIPTION OF SYMBOLS 1 ... Disc rotor 2 ... Rotor hub 3 ... Rotor base 5 ... Axle insertion hole 6 ... Vehicle body mounting hole 7, 8 ... Thinning hole 9 ... Lining sliding contact part 9a ... Inner peripheral side sliding contact part 9b ... Central sliding contact part 9c ... Outer peripheral side sliding contact part 10 ... Through hole formed in inner peripheral side sliding contact part 9a ... Through hole formed in outer peripheral side sliding contact part 9b ... Small circular recessed hole formed in central sliding contact part 9b 21 ... Bottom wall of hollow hole 20, 40 ... Oval hollow hole 31 ... Bottom wall of hollow hole 41 ... Bottom wall of hollow hole L ... Radial line O of disk ... Center of disk rotor 1
Claims (3)
接するライニング摺接部を有する車両用ディスクブレー
キのディスクロータにおいて、前記ライニング摺接部を
ディスク半径方向に三等分して、内外にリング状の内周
側摺接部と中央摺接部と外周側摺接部とを設定し、中央
摺接部を除く内周側摺接部と外周側摺接部に、それぞれ
複数の貫通孔を形成したことを特徴とする車両用ディス
クブレーキのディスクロータ。1. In a disc rotor of a vehicle disc brake, which has a lining sliding contact portion with which a lining of a friction pad slides in contact with an outer peripheral portion, the lining sliding contact portion is divided into three equal parts in a radial direction of the disc, and rings are formed inside and outside. The inner peripheral side sliding contact part, the central sliding contact part, and the outer peripheral side sliding contact part are set, and a plurality of through holes are formed in the inner peripheral side sliding contact part and the outer peripheral side sliding contact part excluding the central sliding contact part. A disc rotor for a vehicle disc brake, which is formed.
を形成したことを特徴とする請求項１記載の車両用ディ
スクブレーキのディスクロータ。2. The disc rotor for a disc brake for a vehicle according to claim 1, wherein a plurality of recessed holes are formed on both surfaces of the central sliding contact portion.
面の窪み孔との位相を偏位させたことを特徴とする請求
項２記載の車両用ディスクブレーキのディスクロータ。3. The disc rotor for a disc brake for a vehicle according to claim 2, wherein the recessed hole on one side surface of the central sliding contact portion and the recessed hole on the other side surface are deviated in phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06262715A JP3136459B2 (en) | 1994-10-26 | 1994-10-26 | Disc rotor for vehicle disc brakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06262715A JP3136459B2 (en) | 1994-10-26 | 1994-10-26 | Disc rotor for vehicle disc brakes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08121513A true JPH08121513A (en) | 1996-05-14 |
| JP3136459B2 JP3136459B2 (en) | 2001-02-19 |
Family
ID=17379593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06262715A Expired - Fee Related JP3136459B2 (en) | 1994-10-26 | 1994-10-26 | Disc rotor for vehicle disc brakes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3136459B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004088161A1 (en) * | 2003-03-31 | 2004-10-14 | Freni Brembo S.P.A. | A disc for a disc brake disc brake and brake band for a disc |
| EP1748212A1 (en) * | 2004-05-18 | 2007-01-31 | Yutaka Giken Co., Ltd. | Floating type disk brake |
| JP2013053741A (en) * | 2011-09-06 | 2013-03-21 | Yutaka Giken Co Ltd | Brake disc |
-
1994
- 1994-10-26 JP JP06262715A patent/JP3136459B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004088161A1 (en) * | 2003-03-31 | 2004-10-14 | Freni Brembo S.P.A. | A disc for a disc brake disc brake and brake band for a disc |
| EP1748212A1 (en) * | 2004-05-18 | 2007-01-31 | Yutaka Giken Co., Ltd. | Floating type disk brake |
| EP1748212A4 (en) * | 2004-05-18 | 2007-11-07 | Yutaka Giken Co Ltd | Floating type disk brake |
| US7762379B2 (en) | 2004-05-18 | 2010-07-27 | Yutaka Giken Co., Ltd. | Floating type disk brake |
| JP2013053741A (en) * | 2011-09-06 | 2013-03-21 | Yutaka Giken Co Ltd | Brake disc |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3136459B2 (en) | 2001-02-19 |
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