JPH0442586Y2 - - Google Patents
Info
- Publication number
- JPH0442586Y2 JPH0442586Y2 JP1988003862U JP386288U JPH0442586Y2 JP H0442586 Y2 JPH0442586 Y2 JP H0442586Y2 JP 1988003862 U JP1988003862 U JP 1988003862U JP 386288 U JP386288 U JP 386288U JP H0442586 Y2 JPH0442586 Y2 JP H0442586Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- friction material
- friction
- wet
- oil groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000002783 friction material Substances 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 230000035515 penetration Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 244000226021 Anacardium occidentale Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 235000020226 cashew nut Nutrition 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 230000009291 secondary effect Effects 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000006163 transport media Substances 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、クラツチの摩擦材、特に油液中で使
用するのに適した湿式摩擦材に関するものであ
る。[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a friction material for a clutch, particularly a wet friction material suitable for use in an oil solution.
〔従来の技術〕
例えば自動車、建設機械、オートバイ、農業機
械、モーターボートなどで原動機からの駆動を変
速機に伝達するクラツチは、常時は充分に動力を
伝達する一方、発進時などは適度な滑りを与える
と共に変速機の変速歯車の切り替え時には動力を
遮断する機能が要求される。このような機能を満
たすクラツチとして摩擦式のクラツチが広く採用
されている。摩擦式のクラツチには乾燥状態で使
用される乾式クラツチと油液中で使用される湿式
クラツチとがある。後者の湿式クラツチは遊星歯
車式の自動変速機内の構成要素として多板クラツ
チの形で多く使用されているものである。 [Conventional technology] For example, in automobiles, construction machinery, motorcycles, agricultural machinery, motor boats, etc., the clutch that transmits the drive from the prime mover to the transmission transmits sufficient power at all times, but when starting, etc., the clutch transmits a sufficient amount of power. At the same time, a function is required to cut off the power when changing gears of the transmission. Friction type clutches are widely used as clutches that satisfy these functions. There are two types of friction clutches: dry clutches that are used in dry conditions and wet clutches that are used in oil. The latter wet clutch is often used in the form of a multi-disc clutch as a component in planetary gear type automatic transmissions.
湿式クラツチのフリクシヨンプレートは、第１
０図（分解図）に示すようにペーパーフエーシン
グと呼ばれる湿式摩擦材１を芯金２の両面に貼合
わせた構成となつている。 The friction plate of the wet clutch is
As shown in Figure 0 (exploded view), a wet friction material 1 called a paper facing is pasted on both sides of a core bar 2.
湿式摩擦材１は、有機質繊維や無機質繊維にグ
ラフアイトやアスベスト、セラミツクなどの無機
質充填剤およびカシユーダストなどの有機充填剤
（摩擦調整剤）を添加して湿式抄造した基材に、
フエノール系樹脂やメラミン系樹脂などの熱硬化
性樹脂を含浸、硬化させたものである。この紙質
基材の気孔部分に油は保持され循環するものと考
えられる。これらの材料は摩擦係数が高いうえに
弾性に富み、しかも多孔性であるから油の吸収率
が高いので、現在のところ最も優れた湿式摩擦材
の材料として多量に使用されている。 The wet friction material 1 is made by wet-forming a base material by adding an inorganic filler such as graphite, asbestos, or ceramic and an organic filler (friction modifier) such as cashew dust to organic fibers or inorganic fibers.
It is impregnated and hardened with thermosetting resin such as phenolic resin or melamine resin. It is thought that oil is retained and circulated in the pores of this paper base material. These materials have a high coefficient of friction, are highly elastic, and are porous, so they have a high oil absorption rate, so they are currently used in large quantities as the best wet friction materials.
摩擦式のクラツチでは摩擦熱が発生するため、
前記の機能が安定して果されるには、摩擦部分か
ら熱が効率良く放出されなければならない。湿式
クラツチでは油が熱の運搬媒体として重要な役割
を負つている。摩擦面で発生した熱は、油が媒体
となつて系全体に拡散放出される。従つて摩擦材
自身の油保有量並びに油の出入りが少ないと過熱
し、摩擦材の熱劣化及び油の酸化、分解が起り、
摩擦材としての機能が低下してしまう。 Friction type clutches generate frictional heat, so
In order for the above-mentioned function to be stably performed, heat must be efficiently released from the friction portion. In wet clutches, oil plays an important role as a heat transport medium. The heat generated on the friction surface is diffused and released throughout the system using oil as a medium. Therefore, if the amount of oil held in the friction material itself and the amount of oil flowing in and out are small, it will overheat, causing thermal deterioration of the friction material and oxidation and decomposition of the oil.
Its function as a friction material deteriorates.
このような事態を回避するために、摩擦材の表
面に油が循環流通できる溝を設けた湿式摩擦材が
提案されている。第１０図に示した湿式摩擦材１
は、表面に油溝３が形成された例である。その油
溝の形状は、同図のダブルパラレル形状の他に、
パラレル形状、ワツフル形状が知られている。こ
れらの摩擦材の油溝３はいずれも内周と外周の両
方に開口した全溝型であり、油の循環が良い反
面、油が油溝３から流出し易い。そのため摩擦材
に浸透した油も油溝３を伝わつて遠心力により外
部に飛散してしまい、十分な冷却効果が得られな
いことがある。エンジンが高回転、高出力化する
と、油に加わる遠心力も増加し、この傾向が助長
される。 In order to avoid such a situation, a wet friction material has been proposed in which the surface of the friction material is provided with grooves through which oil can circulate. Wet friction material 1 shown in Figure 10
This is an example in which oil grooves 3 are formed on the surface. In addition to the double parallel shape shown in the figure, the shape of the oil groove is
Parallel shape and Watsuful shape are known. The oil grooves 3 of these friction materials are all of the full-groove type with openings on both the inner and outer peripheries, and although oil circulation is good, oil tends to flow out from the oil grooves 3. Therefore, the oil that has permeated the friction material is transmitted through the oil grooves 3 and scattered to the outside due to centrifugal force, so that a sufficient cooling effect may not be obtained. As the engine speeds up and outputs more, the centrifugal force exerted on the oil also increases, which exacerbates this tendency.
実公昭57−30498号公報に別な湿式摩擦材が開
示されている。この湿式摩擦材は油溝の形状を改
良したもので、油溝には摩擦材の回転方向に向つ
て浅くなる傾向がつけられている。しかしこの油
溝も内周から外周に至る全溝型であり、前述の摩
擦材同様に冷却効果が不十分である。 Another wet type friction material is disclosed in Japanese Utility Model Publication No. 57-30498. This wet type friction material has an improved shape of the oil groove, and the oil groove tends to become shallower in the direction of rotation of the friction material. However, this oil groove is also of a full-groove type extending from the inner periphery to the outer periphery, and like the friction material described above, the cooling effect is insufficient.
本考案の出願人は先に、従来の湿式摩擦材の上
記欠点、問題点を解消する湿式摩擦材を考案し
た。その考案は実開昭62−82428号公報に開示さ
れている。この湿式摩擦材の油溝は、摩擦材の内
周から半径方向の中間部に至る半溝型のため、遠
心力によつて油が飛散することはない。しかし油
溝の断面形状は、第１０図に示す油溝３と同じ
く、摩擦面に対し略垂直に掘り下げられた形状で
ある。そのため摩擦材が回転した場合、油は油溝
の端部から摩擦材内部に浸透されるのみで、特に
外周近傍への給油が不十分となる傾向があり、摩
擦面全体に対する冷却効果が大きいとは言えな
い。
The applicant of the present invention has previously devised a wet friction material that solves the above-mentioned drawbacks and problems of conventional wet friction materials. The idea is disclosed in Japanese Utility Model Application No. 62-82428. The oil groove of this wet type friction material is of a semi-groove type extending from the inner periphery of the friction material to the radially intermediate portion, so that oil does not scatter due to centrifugal force. However, the cross-sectional shape of the oil groove, like the oil groove 3 shown in FIG. 10, is a shape dug approximately perpendicularly to the friction surface. Therefore, when the friction material rotates, the oil only penetrates into the friction material from the end of the oil groove, and the oil supply tends to be insufficient, especially near the outer periphery, and the cooling effect on the entire friction surface is large. I can't say that.
本考案はその考案をさらに改良し、高回転時の
接触、摺動においても油の循環が程良くなり、摩
擦面の充分な冷却効果が得られ、耐熱性の高い湿
式摩擦材を提供することを目的とする。 The present invention further improves that idea and provides a wet friction material that has good oil circulation even during contact and sliding at high rotational speeds, provides a sufficient cooling effect on the friction surface, and has high heat resistance. With the goal.
前記の目的を達するための本考案の湿式摩擦材
を実施例に対応する図面により説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The wet friction material of the present invention for achieving the above object will be explained with reference to drawings corresponding to embodiments.
第１図は本考案の一実施例である湿式摩擦材１
の平面図、第２図ａはそのＡ−Ａ断面拡大図、第
２図ｂはＢ−Ｂ断面拡大図である。これらの図に
示すように、本考案の湿式摩擦材１は、その形状
が摩擦面に油溝３を有する環状である。油溝３は
略平行幅であり環状の内周から半径方向の途中で
末端が封鎖している。そして油溝の閉鎖末端およ
び側部の内壁面５および４，６は摩擦面の垂直方
向に対して30〜85度傾斜している。 Figure 1 shows a wet friction material 1 which is an embodiment of the present invention.
FIG. 2a is an enlarged sectional view taken along line AA, and FIG. 2b is an enlarged sectional view taken along line BB. As shown in these figures, the wet friction material 1 of the present invention has an annular shape with oil grooves 3 on the friction surface. The oil groove 3 has a substantially parallel width, and the end is closed midway in the radial direction from the annular inner periphery. The inner wall surfaces 5, 4 and 6 at the closed ends and sides of the oil groove are inclined at 30 to 85 degrees with respect to the vertical direction of the friction surface.
内壁面４，５，６の傾斜角が30度未満の場合
は、油の浸透量が少なく、85度以上の場合は油溝
３内の油量が不足する。 When the inclination angle of the inner wall surfaces 4, 5, and 6 is less than 30 degrees, the amount of oil permeation is small, and when it is 85 degrees or more, the amount of oil in the oil groove 3 is insufficient.
湿式摩擦材１は、例えば第１０図に示すように
芯金２の両面に貼合わせて使用される。この湿式
摩擦材１を用いた摩擦係合板は一部が油中に浸漬
されたり吸油手段によつて油の供給を受ける。湿
式摩擦材１が回転する相手部材（不図示）に摩擦
接触して従回転すると、油溝３内や湿式摩擦材１
に含まれている油は、外方向（内壁面５方向）へ
の遠心力と回転後方への力を受ける。油溝３は略
平行幅であり環状の内周から半径方向の途中で末
端が封鎖し、その閉鎖末端および側部の内壁面５
および４，６は摩擦面の垂直方向に対して30〜85
度傾斜し、環状の中央部近傍で油溝３内の油と湿
式摩擦材１の材質とが会合接触面積を大きくでき
る。そのため、油溝３内の油は、遠心力により封
鎖末端の内壁面５から湿式摩擦材１の環状の外側
に向かつて浸透するとともに、側部の内壁面４，
６から湿式摩擦材１内部に浸透する。摩擦材１内
部に浸入した油は外周方向かつ回転後方向に向つ
て移動、浸透し、再度、油溝３に流入するかまた
は外周から放出されて円滑に循環流通する。油溝
３は外周側に開口していないため、油溝３内の油
が過剰に外部に飛散することはない。
The wet friction material 1 is used by being attached to both sides of a core metal 2, as shown in FIG. 10, for example. A friction engagement plate using this wet type friction material 1 is partially immersed in oil or supplied with oil by an oil absorbing means. When the wet friction material 1 comes into frictional contact with a rotating partner member (not shown) and rotates, the inside of the oil groove 3 and the wet friction material 1
The oil contained in the shaft is subjected to centrifugal force in the outward direction (inner wall surface 5 direction) and force in the rearward direction of rotation. The oil groove 3 has a substantially parallel width, and its end is closed in the middle in the radial direction from the annular inner periphery, and the closed end and the inner wall surface 5 of the side part are closed.
and 4 and 6 are 30 to 85 perpendicular to the friction surface.
The contact area between the oil in the oil groove 3 and the material of the wet friction material 1 can be increased near the annular center. Therefore, the oil in the oil groove 3 permeates toward the annular outside of the wet friction material 1 from the inner wall surface 5 at the closed end due to centrifugal force, and the oil in the inner wall surface 4 at the side portion
6 into the wet friction material 1. The oil that has entered the inside of the friction material 1 moves and penetrates toward the outer circumference and toward the rear of rotation, and either flows into the oil groove 3 again or is released from the outer circumference and circulates smoothly. Since the oil groove 3 is not open to the outer circumferential side, the oil in the oil groove 3 does not excessively scatter to the outside.
以下、本考案の湿式摩擦材の実施例を詳細に説
明する。
Examples of the wet friction material of the present invention will be described in detail below.
第１図に示すように、環状の湿式摩擦材１の表
面にはダブルパラレル形状に油溝３が成されてい
る。油溝３は摩擦材１の内周から半径方向の中間
部まで形成された半溝型である。第２図に示すよ
うに、油溝３の内壁面４，５，６と摩擦材の回転
軸のなす角θ4，θ5，θ6は45度に設定されている。
この摩擦材の材料は、繊維質と充填剤からなる基
材に硬化剤を含浸し硬化させた公知のものであ
る。油溝３はプレス成形によつて直接摩擦材表面
に刻印溝が構成されたものである。 As shown in FIG. 1, oil grooves 3 are formed in a double parallel shape on the surface of an annular wet friction material 1. As shown in FIG. The oil groove 3 is a half-groove type formed from the inner periphery of the friction material 1 to a radially intermediate portion. As shown in FIG. 2, the angles θ 4 , θ 5 , θ 6 formed by the inner wall surfaces 4, 5 , 6 of the oil groove 3 and the rotating shaft of the friction material are set to 45 degrees.
The material of this friction material is a known material made of a base material made of fibers and a filler impregnated with a hardening agent and hardened. The oil groove 3 is a groove formed directly on the surface of the friction material by press molding.
この湿式摩擦材の摩擦接触繰り返し試験を行な
い、摩擦係数の変化を測定する。測定には摩擦測
定器を用い、回転数5600rpm、イナーシヤ、
2.0kgcm・sec2、圧力2.0Kg／cm2、給油量1.2cc／
min・cm2、油温80℃で測定した。比較のため、油
溝３の内壁面が摩擦面と直角である他は実施例１
と同一な摩擦材（比較例１）、油溝３が内周と外
周に開口した全溝型である他は実施例と同一な摩
擦材（比較例２）を同様にして測定を行つた。そ
れらの結果を第３図に示す。上記の試験結果より
本考案の湿式摩擦材は高回転時の接触においても
摩擦係数の変化が少なく、耐熱性が向上している
ことが認められた。 This wet friction material is subjected to repeated friction contact tests to measure the change in friction coefficient. The measurements are performed using a friction measuring device with a rotation speed of 5600 rpm, inertia,
2.0kgcm・sec2 , pressure 2.0Kg/ cm2 , oil supply amount 1.2cc/
The measurements were performed at min·cm 2 and an oil temperature of 80° C. For comparison, the same test was performed as in Example 1 except that the inner wall surface of the oil groove 3 was perpendicular to the friction surface.
The same measurements were carried out on a friction material (Comparative Example 1) identical to that of the embodiment, and a friction material (Comparative Example 2) identical to that of the embodiment except that the oil grooves 3 are of a full groove type with the oil grooves 3 open to the inner and outer circumferences. The results are shown in Figure 3. From the above test results, it was found that the wet friction material of the present invention has little change in friction coefficient even during contact at high revolutions, and has improved heat resistance.
第４図に示す浸透観察装置８を用い、実施例お
よび比較例１の油浸透状態を観察した。この観察
装置は二枚の摩擦材１を油溝側を透明なアクリル
板８に向けて挾み、内部の空間に油９を封入した
ものである。これを回転すると摩擦材１とアクリ
ル板８の〓間に油溝の周辺で油９が浸透するの
で、その様子をアクリル板８側から観察すること
が出来る。第５図に実施例の油浸透状態、第６図
に比較例１の油浸透状態を示す（回転数
7000rpm、圧力30Kg／cm2）。本考案の湿式摩擦材
は全周、全幅に渡つて油が浸透しているが、比較
例１の摩擦材は油溝３の周辺の限られた部分にし
か浸透していない。 The state of oil penetration in Example and Comparative Example 1 was observed using the penetration observation device 8 shown in FIG. This observation device is made by sandwiching two friction materials 1 with their oil grooves facing a transparent acrylic plate 8, and filling the internal space with oil 9. When this is rotated, oil 9 penetrates around the oil groove between the friction material 1 and the acrylic plate 8, and this can be observed from the acrylic plate 8 side. Figure 5 shows the oil penetration state of Example, and Figure 6 shows the oil penetration state of Comparative Example 1 (rotation speed
7000rpm, pressure 30Kg/ cm2 ). In the wet friction material of the present invention, oil permeates the entire circumference and width, but in the friction material of Comparative Example 1, oil permeates only in a limited area around the oil groove 3.
第７図〜第９図は湿式摩擦材の別な実施例の平
面図である。これらの摩擦材は前述した摩擦材の
油溝の平面形状を変更したものである。第９図に
示す摩擦材では、摩擦材の幅方向中央部に環状の
溝を加えて、内周に開口した複数の油溝３をつな
いでいる。各摩擦材の油溝は摩擦材外周に対して
閉じており、内壁面は摩擦材表面から溝底面に向
つて45度傾斜している。 7 to 9 are plan views of other embodiments of the wet friction material. These friction materials are obtained by changing the planar shape of the oil grooves of the friction materials described above. In the friction material shown in FIG. 9, an annular groove is added at the center in the width direction of the friction material to connect a plurality of oil grooves 3 opened on the inner periphery. The oil groove of each friction material is closed to the outer periphery of the friction material, and the inner wall surface is inclined at 45 degrees from the surface of the friction material toward the bottom surface of the groove.
なお油溝３は摩擦材を芯金に接着した後に機械
切削加工を行つて形成しても良い。 Note that the oil groove 3 may be formed by mechanically cutting the friction material after bonding it to the core metal.
以上詳細に説明したように、本考案の湿式摩擦
材は、油溝３が略平行幅であり環状の内周から半
径方向の途中で末端が封鎖し、その閉鎖末端およ
び側部の内壁面が摩擦面の垂直方向に対して傾斜
し、油溝内の油と湿式摩擦材の会合接触面積が大
きくなるため、油が、油溝から摩擦材内部に好適
に浸透して循環流通する。そのためエンジンが高
回転している時の接触においても十分な冷却効果
があり、焼付きのないクラツチ等を得ることが出
来る。また本考案の湿式摩擦材では、油溝は略平
行幅であるため、油溝を形成するための加工が容
易になるという副次的効果も得られる。
As explained in detail above, in the wet friction material of the present invention, the oil groove 3 has a substantially parallel width, the end is closed in the middle in the radial direction from the annular inner periphery, and the closed end and the inner wall surface of the side part are closed. Since the friction surface is inclined with respect to the vertical direction and the contact area between the oil in the oil groove and the wet friction material becomes large, the oil suitably penetrates into the friction material from the oil groove and circulates. Therefore, there is a sufficient cooling effect even in contact when the engine is running at high speed, and a clutch that does not seize can be obtained. Furthermore, in the wet friction material of the present invention, since the oil grooves have a substantially parallel width, a secondary effect is obtained in that processing for forming the oil grooves is facilitated.
第１図は本考案を適用する湿式摩擦材の平面
図、第２図ａはそのＡ−Ａ断面拡大図、第２図ｂ
はそのＢ−Ｂ断面拡大図、第３図は繰り返し接触
試験による摩擦係数を示す図、第４図は浸透観察
装置の概略断面図、第５図は実施例の油浸透状態
を表す説明図、第６図は比較例の油浸透状態を表
す説明図、第７図〜第９図は別な実施例の平面
図、第１０図は従来の湿式摩擦材を用いたフリク
シヨンプレートの分解斜視図である。
１……湿式摩擦材、２……芯金、３……油溝、
４，５，６……内壁面、７……溝底面、８……ア
クリル板、９……油。
Figure 1 is a plan view of a wet friction material to which the present invention is applied, Figure 2a is an enlarged sectional view taken along line A-A, and Figure 2b is
is an enlarged view of the B-B cross section, FIG. 3 is a diagram showing the coefficient of friction obtained by repeated contact tests, FIG. 4 is a schematic cross-sectional view of the penetration observation device, and FIG. 5 is an explanatory diagram showing the state of oil penetration in the example. Fig. 6 is an explanatory diagram showing the oil penetration state of a comparative example, Figs. 7 to 9 are plan views of other embodiments, and Fig. 10 is an exploded perspective view of a friction plate using a conventional wet friction material. It is. 1... Wet friction material, 2... Core bar, 3... Oil groove,
4, 5, 6...Inner wall surface, 7...Groove bottom surface, 8...Acrylic plate, 9...Oil.
Claims (1)
いて、その形状が摩擦面に油溝を有する環状であ
り、前記油溝は略平行幅であり該環状の内周から
半径方向の途中で末端が封鎖し、該油溝の閉鎖末
端および側部の内壁面が摩擦面の垂直方向に対し
て30〜85度傾斜していることを特徴とする湿式摩
擦材。 A friction material for a wet clutch used in an oily liquid has an annular shape with an oil groove on the friction surface, and the oil groove has a substantially parallel width and ends at a point halfway in the radial direction from the inner periphery of the annular shape. 1. A wet friction material characterized in that the inner wall surface of the closed end and side portion of the oil groove is inclined at 30 to 85 degrees with respect to the vertical direction of the friction surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988003862U JPH0442586Y2 (en) | 1988-01-18 | 1988-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988003862U JPH0442586Y2 (en) | 1988-01-18 | 1988-01-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01109631U JPH01109631U (en) | 1989-07-25 |
| JPH0442586Y2 true JPH0442586Y2 (en) | 1992-10-08 |
Family
ID=31205873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988003862U Expired JPH0442586Y2 (en) | 1988-01-18 | 1988-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0442586Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002181073A (en) * | 2000-12-18 | 2002-06-26 | Aisin Aw Co Ltd | Oil groove shape for frictional member |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4593032B2 (en) * | 2001-08-10 | 2010-12-08 | アイシン化工株式会社 | Wet friction member |
| JP2008106929A (en) * | 2006-09-29 | 2008-05-08 | Jtekt Corp | Driving force transmission |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6023554Y2 (en) * | 1976-12-08 | 1985-07-13 | トヨタ自動車株式会社 | Dry veneer clutch |
| JPS6282428U (en) * | 1985-11-12 | 1987-05-26 |
-
1988
- 1988-01-18 JP JP1988003862U patent/JPH0442586Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002181073A (en) * | 2000-12-18 | 2002-06-26 | Aisin Aw Co Ltd | Oil groove shape for frictional member |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01109631U (en) | 1989-07-25 |
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