Deprecated: The each() function is deprecated. This message will be suppressed on further calls in /home/zhenxiangba/zhenxiangba.com/public_html/phproxy-improved-master/index.php on line 456
JP4172055B2 - Resin pulley - Google Patents
[go: Go Back, main page]

JP4172055B2 - Resin pulley - Google Patents

Resin pulley Download PDF

Info

Publication number
JP4172055B2
JP4172055B2 JP11526398A JP11526398A JP4172055B2 JP 4172055 B2 JP4172055 B2 JP 4172055B2 JP 11526398 A JP11526398 A JP 11526398A JP 11526398 A JP11526398 A JP 11526398A JP 4172055 B2 JP4172055 B2 JP 4172055B2
Authority
JP
Japan
Prior art keywords
resin
nylon
pulley
resin composition
thermal conductivity
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
JP11526398A
Other languages
Japanese (ja)
Other versions
JPH11311313A (en
Inventor
敏己 高城
孫三 浜本
貴彦 内山
浩幸 山下
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NSK Ltd
Original Assignee
NSK Ltd
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 NSK Ltd filed Critical NSK Ltd
Priority to JP11526398A priority Critical patent/JP4172055B2/en
Publication of JPH11311313A publication Critical patent/JPH11311313A/en
Application granted granted Critical
Publication of JP4172055B2 publication Critical patent/JP4172055B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Pulleys (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、樹脂製プーリに係り、特に、自動車に搭載される補機類の駆動ベルト用プーリをはじめ、その他ベルトテンショナー用プーリ、或いはアイドラプーリ等に好適に使用できる樹脂製プーリに関する。
【0002】
【従来の技術】
従来より、自動車の補機類を駆動するベルトの案内用プーリとして、転がり軸受の外周に樹脂プーリ部を一体成形してなる樹脂製プーリが採用されている。この種の樹脂製プーリは、射出成形用金型の所定位置に転がり軸受を配置し、該転がり軸受の外輪外周部と前記射出成形用金型との間に形成される空間部に、溶融樹脂を射出して樹脂プーリ部が成形される。このインサート成形で使用される樹脂材料は、ガラス繊維等の強化繊維を15〜40重量%含有した強化66ナイロン樹脂,強化610ナイロン樹脂,強化11ナイロン樹脂等のポリアミド樹脂や、ポリフェニレンサルファイド樹脂が提案されている(侍開平7−63249号公報,特開平8−4883号公報参照)。
【0003】
【発明が解決しようとする課題】
一般に、樹脂材料は熱伝導が悪く、上述の材料については概ね0.3W/m・K程度であり、軸受鋼の80W/m・Kに比べ非常に小さい。そのため、従来の樹脂製プーリを回転させると、内蔵されている転がり軸受の回転発熱や樹脂プーリ部とベルトの間に発生する摩擦熱が十分に放熱されずに徐々に畜熱される結果、内蔵軸受の温度が、樹脂プーリのない単体での回転時よりも上昇する。このように軸受の温度が上昇すると、軸受中のグリースの劣化が進行しやすく、軸受寿命に悪影響を及ぼすという未解決の課題がある。
【0004】
本発明は、このような従来の樹脂製プーリにおける未解決の課題を解決するためになされたものであり、その目的とするところは、樹脂プーリ部の樹脂材料自体の熱伝導を改良して放熱性を促進することにより、内蔵軸受の寿命の延長を図ることにある。
【0005】
【課題を解決するための手段】
上記の目的を達成するために、本発明は、転がり軸受と、その外周に一体に成形された樹脂プーリ部と、からなる樹脂製プーリにおいて、当該樹脂プーリ部を、樹脂と熱伝導率が5W/m・K以上の充填材とを含有し熱伝導率が0.51W/m・K以上である樹脂組成物で構成するとともに、前記樹脂を66ナイロン樹脂,46ナイロン樹脂,6−12共重合ナイロンと66ナイロンとの混合樹脂,11ナイロンと66ナイロンとの混合樹脂,12ナイロンと66ナイロンとの混合樹脂,芳香族ポリアミド樹脂,又はポリフェニレンサルファイド樹脂とし、前記充填材をアルミナ,窒化ホウ素,炭化ケイ素,シリカ,酸化チタン,カーボン繊維,グラファイト,又はカーボンブラックとし、さらに、前記充填材の含有率を前記樹脂組成物の30重量%以上50重量%以下としたことを特徴とする。ただし、前記樹脂組成物の熱伝導率は0.75W/m・K以上であることが好ましい。
【0006】
【発明の実施の形態】
以下、本発明の実施の形態を図面を参照して説明する。
図1は本発明に係る樹脂製プーリの一実施形態の正面図、図2はそのII−II線断面図である。この樹脂製プーリは、中心に配した転がり軸受1と、その転がり軸受1の外周に一体成形された樹脂プーリ部2とを備えている。当該樹脂プーリ部2は、図2に示すような略エ字形断面を有するリング状で、その外径面2gがベルトの転動面であり、これにリブ2aを介して連結する内径面2nが転がり軸受1の外輪1gの外面を覆って一体的に固着している。リブ2aの側面には図1に示すような凹凸2bが放射状に多数形成されて、熱放射面積の増大が図られている。このように形成された樹脂製プーリは、その転がり軸受1の内輪1nを回転軸に装着し、樹脂プーリ部2にベルトを掛けて使用される。
【0007】
前記樹脂プーリ部2は、プーリ使用時に発生する熱の放散を考慮して、その熱伝導率が0.5W/m・K以上となるような樹脂組成物を材料に用いて成形される。具体的には、マトリクスである樹脂中に高熱伝導率の充填材を配合することで熱伝導率を0.5W/m・K以上とした樹脂組成物を材料としている。特に、自動車向けの用途に使用される樹脂製プーリの場合は、降雪地域での使用を考慮すると耐塩化カルシウム溶液(融雪剤)性をも有することが好ましく、またエンジンルームという使用環境から樹脂自体の耐熱性も必要である。
【0008】
これらの条件に鑑み、本発明の樹脂製プーリに好ましく使用できるマトリクス樹脂としては、66ナイロン樹脂,46ナイロン樹脂,6‐12共重合ナイロンと66ナイロンとの混合樹脂,11ナイロンと66ナイロンとの混合樹脂,12ナイロンと66ナイロンとの混合樹脂,芳香族ポリアミド樹脂,ポリフエニレンサルフアイド樹脂等を例示できる。しかし、適切な耐熱性と耐塩化カルシウム溶液性を有する樹脂材料であればこれらに限定されない。
【0009】
一方、高熱伝導を有する充填材としては、単体の熱伝導率が5W/m・K以上の充填材が好ましく、この条件にかなう充填材として、金属化合物系ではアルミナ,窒化ホウ素,炭化ケイ素,シリカ,酸化チタン等、また非金属系ではカーボン繊維,グラファイト,カーボンブラック等、単体金属ではステンレス,銅,アルミニウムを例示できる。これらの高熱伝導性充填材は、樹脂組成物の強度を維持するため、ガラス繊維などの補強材と併用するとさらに好ましい。主な高熱伝導性充填材と熱伝導率を表1に示す。
【0010】
【表1】

Figure 0004172055
【0011】
(実施例1)
以下、本発明を実施例により詳細に説明する。
図1,図2に示すように、転がり軸受1の外周に樹脂プーリ部2を一体成形した樹脂製プーリを、熱伝導率が異なる種々の配合の樹脂組成物を用いて試作し、放熱性を評価した。実施例11〜14は樹脂組成物の熱伝導率が0.5W/m・K以上のものである。一方、比較例11は樹脂プーリ部2に代えて鉄製プーリを用いたもの、比較例12及び13は樹脂プーリ部2の樹脂組成物の熱伝導率が0.5W/m・K未満のものである。
【0012】
使用した樹脂はポリフェニレンサルファイド樹脂(以下PPSと略す)で、これに充填材としてガラス繊維及び/又はアルミナを配合し、表2の樹脂組成物を作成して成形材料とした。当該PPS樹脂としては、呉羽化学工業(株)製「フオートロンKPS」を、ガラス繊維として富士ファイバーグラス(株)製のものを、アルミナとして昭和電工(株)製「ASグレード」を使用した。
【0013】
樹脂プーリ部2を有する各供試体の成形方法は次の通りである。所定量の樹脂及び充填材を計測してへンシェルミキサ一で混合した後、それを二軸押し出し機(池貝鉄工製)に投入し、樹脂温度290〜300℃で押し出して成形原料であるぺレットを得た。そのペレットを、予め転がり軸受1がセットしてある所定の樹脂プーリ金型を装着した射出成形機に投入し、樹脂溶融温度305〜320℃,金型温度130〜150℃,充填時間1〜2.5秒,圧力100〜150MPaの成形条件の下にインサート成形して、表2の組成に該当する樹脂プーリ部2を備えた樹脂製プーリの各供試体を得た。
【0014】
得られた供試体毎に、図3に示す評価試験機を用いて耐久運転試験を実施した。当該評価試験機の概要は、鉄製の駆動輪5と従動輪6とを備え、それらの間にタイミングベルト7を掛け渡して連結している。そのタイミングベルト7に、供試体のプーリ8pを係合させ、内蔵の転がり軸受1にはラジアル方向に100Kgの荷重を掛けて押しつける。この試験機は恒温槽中に収納してあり、設定温度120℃にて、駆動輪5を図外の駆動用モータにより駆動させて、試験プーリ8を8,000rpmで回転させ、その時の内蔵転がり軸受1の内輪1nの定常になった時の温度を計測した。この温度上昇試験の結果を、試験プーリ8に用いた樹脂組成物の熱伝導率と共に、表2に示した。
【0015】
【表2】
Figure 0004172055
【0016】
さらに、回転数を高速にして12,000rpmで試験プーリ8が寿命に達するまで運転を続ける耐久試験を行った。なお、試験プーリ8の寿命の判定は、軸に取り付けた加速度センサがしきい値(40G)を越えた時の合計運転時間をもって寿命とした。その耐久試験の結果を表2に併記して示した。これらの試験結果から、概ね樹脂組成物の熱伝導率が0.5W/m・K以上になると放熱が促進されて、軸受内輪温度の上昇を抑制する効果が発現し、その結果転がり軸受の耐久寿命も延長することが判った。
(実施例2)
樹脂製プーリの樹脂プーリ部2に用いる樹脂組成物の種類を変えて、実施例1と同様の試験を行った。実施例21〜23は樹脂組成物の熱伝導率が0.5W/m・K以上のものであり、比較例21,22は樹脂プーリ部2の樹脂組成物の熱伝導率が0.5W/m・K未満のものである。
【0017】
使用した樹脂は66ナイロン樹脂と12ナイロン樹脂との混合樹脂で、これに充填材としてカーボン繊維を配合した表3の樹脂組成物を作成して成形材料とした。当該66ナイロン樹脂及び12ナイロン樹脂としては宇部興産製「宇部ナイロン」を、カーボン繊維としては大阪ガス製「リノベス」を使用した。
【0018】
樹脂プーリ部2を有する各供試体の成形方法は上記実施例1の場合と略同様である。すなわち、所定量の樹脂及び充填材を計測してへンシェルミキサ一で混合した後、それを二軸押し出し機に投入し、樹脂温度275〜280℃で押し出して成形原料であるぺレットを得た。そのペレットを、予め転がり軸受1がセットしてある所定の樹脂製プーリ用金型を装着した射出成形機に投入し、樹脂溶融温度295〜305℃,金型温度80〜90℃,充填時間1〜2.5秒,圧力100〜150MPaの成形条件の下にインサート成形して、表3の組成に該当する樹脂プーリ部2を備えた樹脂製プーリの各供試体を得た。
【0019】
得られた供試体毎に、図3に示す評価試験機を用いて上記と同様の条件で運転試験を実施し、試験プーリ8における転がり軸受内輪1nの定常になったときの温度を計測した。この温度上昇試験の結果を、樹脂プーリ部2に用いた樹脂組成物の熱伝導率と共に、表3に示した。
【0020】
【表3】
Figure 0004172055
【0021】
さらに、前記実施例1の耐久試験と同一条件で各試験プーリ8の耐久試験を行ってその耐久性を比較評価した。耐久試験の結果を表3に併記して示した。これらの試験結果から、概ね樹脂組成物の熱伝導率が0.5W/m・K以上になると放熱が促進されて、軸受内輪温度の上昇を抑制する効果が発現し、その結果転がり軸受の耐久寿命も延長することが判った。
【0022】
【発明の効果】
以上説明したように、本発明によれば、樹脂製プーリにおける樹脂プーリ部を、耐熱性のある樹脂に熱伝導率の高い充填材を配合してなる熱伝導率が0.51W/m・K以上ある樹脂組成物を用いて形成したため、樹脂製プーリの運転中に発生する熱の放散が促進されて、その結果耐熱性に優れた長寿命の樹脂製プーリを提供できるという効果を奏する。
【図面の簡単な説明】
【図1】本発明に係る樹脂製プーリの一実施の形態を示す正面図である。
【図2】図1のII−II断面図である。
【図3】試験機の概略図である。
【符号の説明】
1 転がり軸受
2 樹脂プーリ部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a resin pulley, and more particularly, to a resin pulley that can be suitably used for a drive belt pulley of an auxiliary machine mounted on an automobile, other belt tensioner pulleys, idler pulleys, and the like.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a resin pulley formed by integrally molding a resin pulley portion on the outer periphery of a rolling bearing has been adopted as a guide pulley for a belt for driving auxiliary machinery of an automobile. In this type of resin pulley, a rolling bearing is disposed at a predetermined position of an injection molding die, and a molten resin is formed in a space formed between the outer peripheral portion of the rolling bearing and the injection molding die. Is injected to mold the resin pulley portion. The resin materials used in this insert molding are polyamide resins such as reinforced 66 nylon resin, reinforced 610 nylon resin and reinforced 11 nylon resin containing 15 to 40% by weight of reinforced fiber such as glass fiber, and polyphenylene sulfide resin. (See Cleaved Hei 7-63249, JP-A 8-4883).
[0003]
[Problems to be solved by the invention]
In general, the resin material has poor heat conduction, and the above-mentioned material is about 0.3 W / m · K, which is much smaller than 80 W / m · K of bearing steel. Therefore, when a conventional resin pulley is rotated, the heat generated by the built-in rolling bearing and the frictional heat generated between the resin pulley and the belt are gradually dissipated without sufficient heat dissipation. The temperature rises more than when rotating alone without a resin pulley. When the temperature of the bearing rises as described above, there is an unsolved problem that the grease in the bearing is likely to deteriorate and adversely affects the bearing life.
[0004]
The present invention has been made in order to solve such an unsolved problem in the conventional resin pulley, and the object of the present invention is to improve the heat conduction of the resin material itself of the resin pulley portion to dissipate heat. It is to extend the life of the built-in bearing by promoting the performance.
[0005]
[Means for Solving the Problems]
In order to achieve the above object , the present invention provides a resin pulley comprising a rolling bearing and a resin pulley portion integrally formed on the outer periphery thereof. The resin pulley portion is made of a resin and a thermal conductivity of 5 W. And a resin composition having a thermal conductivity of 0.51 W / m · K or more, and the resin is made of 66 nylon resin, 46 nylon resin, and 6-12 copolymer. A mixed resin of nylon and 66 nylon, a mixed resin of 11 nylon and 66 nylon, a mixed resin of 12 nylon and 66 nylon, an aromatic polyamide resin, or a polyphenylene sulfide resin, and the filler is alumina, boron nitride, carbonized Silicon, silica, titanium oxide, carbon fiber, graphite, or carbon black is used, and the content of the filler is 3% of the resin composition. Characterized in that the% by weight to 50% by weight. However, the thermal conductivity of the resin composition is preferably 0.75 W / m · K or more.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an embodiment of a resin pulley according to the present invention, and FIG. 2 is a sectional view taken along line II-II. This resin pulley includes a rolling bearing 1 disposed in the center and a resin pulley portion 2 integrally formed on the outer periphery of the rolling bearing 1. The resin pulley portion 2 has a ring shape having a substantially E-shaped cross section as shown in FIG. 2, and an outer diameter surface 2g thereof is a rolling surface of the belt, and an inner diameter surface 2n connected thereto via a rib 2a is provided. The outer surface of the outer ring 1g of the rolling bearing 1 is covered and fixed integrally. A large number of irregularities 2b as shown in FIG. 1 are formed radially on the side surface of the rib 2a to increase the heat radiation area. The resin pulley formed in this way is used by attaching the inner ring 1n of the rolling bearing 1 to the rotating shaft and hanging the belt on the resin pulley portion 2.
[0007]
The resin pulley portion 2 is molded using a resin composition whose material has a thermal conductivity of 0.5 W / m · K or more in consideration of heat dissipation generated when the pulley is used. Specifically, a resin composition having a thermal conductivity of 0.5 W / m · K or more by blending a high thermal conductivity filler into a matrix resin is used as a material. In particular, in the case of resin pulleys used for automobile applications, it is preferable to have a calcium chloride solution (snow melting agent) property in consideration of use in snowfall areas. Heat resistance is also required.
[0008]
In view of these conditions, the matrix resin that can be preferably used in the resin pulley of the present invention includes 66 nylon resin, 46 nylon resin, a mixed resin of 6-12 copolymer nylon and 66 nylon, 11 nylon and 66 nylon Examples thereof include a mixed resin, a mixed resin of 12 nylon and 66 nylon, an aromatic polyamide resin, a polyphenylene sulfide resin, and the like. However, the resin material is not limited thereto as long as the resin material has appropriate heat resistance and calcium chloride solution resistance.
[0009]
On the other hand, as the filler having high thermal conductivity, a filler having a single thermal conductivity of 5 W / m · K or more is preferable, and as a filler that satisfies this condition, alumina, boron nitride, silicon carbide, silica in the metal compound system Examples thereof include titanium oxide, non-metallic carbon fiber, graphite, carbon black, etc., and single metals such as stainless steel, copper, and aluminum. These high thermal conductive fillers are more preferably used in combination with a reinforcing material such as glass fiber in order to maintain the strength of the resin composition. Table 1 shows the main high thermal conductive fillers and thermal conductivity.
[0010]
[Table 1]
Figure 0004172055
[0011]
(Example 1)
Hereinafter, the present invention will be described in detail with reference to examples.
As shown in FIG. 1 and FIG. 2, resin pulleys in which a resin pulley portion 2 is integrally formed on the outer periphery of a rolling bearing 1 are prototyped using resin compositions having various blends having different thermal conductivities to improve heat dissipation. evaluated. In Examples 11 to 14, the resin composition has a thermal conductivity of 0.5 W / m · K or more. On the other hand, Comparative Example 11 uses an iron pulley instead of the resin pulley part 2, and Comparative Examples 12 and 13 have a thermal conductivity of the resin composition of the resin pulley part 2 of less than 0.5 W / m · K. is there.
[0012]
The resin used was polyphenylene sulfide resin (hereinafter abbreviated as PPS), and glass fibers and / or alumina were blended therein as fillers, and the resin compositions shown in Table 2 were prepared as molding materials. As the PPS resin, “Futheron KPS” manufactured by Kureha Chemical Industry Co., Ltd., those manufactured by Fuji Fiber Glass Co., Ltd. as glass fibers, and “AS grade” manufactured by Showa Denko Co., Ltd. were used as alumina.
[0013]
The molding method of each specimen having the resin pulley portion 2 is as follows. After measuring a predetermined amount of resin and filler and mixing with a Henschel mixer, it is put into a twin screw extruder (Ikegai Iron Works) and extruded at a resin temperature of 290 to 300 ° C. Obtained. The pellets are put into an injection molding machine equipped with a predetermined resin pulley mold in which the rolling bearing 1 is set in advance. The resin melting temperature is 305 to 320 ° C., the mold temperature is 130 to 150 ° C., and the filling time is 1-2. Insert molding was performed under molding conditions of 0.5 seconds and a pressure of 100 to 150 MPa to obtain each specimen of a resin pulley provided with a resin pulley portion 2 corresponding to the composition shown in Table 2.
[0014]
For each of the obtained specimens, a durability operation test was performed using the evaluation tester shown in FIG. The outline of the evaluation test machine includes an iron driving wheel 5 and a driven wheel 6, and a timing belt 7 is stretched between them and connected. The pulley 8p of the specimen is engaged with the timing belt 7, and the built-in rolling bearing 1 is pressed by applying a load of 100 kg in the radial direction. This testing machine is housed in a thermostatic bath, and at a set temperature of 120 ° C., the driving wheel 5 is driven by a driving motor (not shown) to rotate the test pulley 8 at 8,000 rpm, and the built-in rolling at that time The temperature when the inner ring 1n of the bearing 1 became steady was measured. The results of this temperature rise test are shown in Table 2 together with the thermal conductivity of the resin composition used for the test pulley 8.
[0015]
[Table 2]
Figure 0004172055
[0016]
Further, an endurance test was performed in which the operation was continued until the test pulley 8 reached the end of its service life at 12,000 rpm at a high speed. The life of the test pulley 8 was determined based on the total operation time when the acceleration sensor attached to the shaft exceeded the threshold (40G). The results of the durability test are shown together in Table 2. From these test results, when the thermal conductivity of the resin composition is approximately 0.5 W / m · K or more, heat dissipation is promoted, and the effect of suppressing the increase in the bearing inner ring temperature is exhibited. As a result, the durability of the rolling bearing is exhibited. It was found that the service life was extended.
(Example 2)
The same test as in Example 1 was performed by changing the type of resin composition used for the resin pulley portion 2 of the resin pulley. In Examples 21 to 23, the thermal conductivity of the resin composition is 0.5 W / m · K or more, and in Comparative Examples 21 and 22, the thermal conductivity of the resin composition in the resin pulley portion 2 is 0.5 W / m. It is less than m · K.
[0017]
The resin used was a mixed resin of 66 nylon resin and 12 nylon resin, and a resin composition shown in Table 3 was prepared by blending carbon fiber as a filler therein to obtain a molding material. As the 66 nylon resin and 12 nylon resin, “Ube Nylon” manufactured by Ube Industries was used, and “Renoves” manufactured by Osaka Gas was used as the carbon fiber.
[0018]
The molding method of each specimen having the resin pulley portion 2 is substantially the same as in the case of Example 1. That is, a predetermined amount of resin and filler were measured and mixed with a Henschel mixer, and then charged into a twin-screw extruder and extruded at a resin temperature of 275 to 280 ° C. to obtain a pellet as a molding raw material. The pellets are put into an injection molding machine equipped with a predetermined resin pulley mold in which the rolling bearing 1 is set in advance, and a resin melting temperature of 295 to 305 ° C., a mold temperature of 80 to 90 ° C., and a filling time of 1 Insert molding was performed under molding conditions of ˜2.5 seconds and pressure of 100 to 150 MPa to obtain specimens of resin pulleys provided with a resin pulley portion 2 corresponding to the composition shown in Table 3.
[0019]
For each obtained specimen, an operation test was performed under the same conditions as described above using the evaluation tester shown in FIG. 3, and the temperature when the rolling bearing inner ring 1 n in the test pulley 8 became steady was measured. The results of this temperature rise test are shown in Table 3 together with the thermal conductivity of the resin composition used for the resin pulley portion 2.
[0020]
[Table 3]
Figure 0004172055
[0021]
Furthermore, the durability test of each test pulley 8 was performed under the same conditions as the durability test of Example 1, and the durability was compared and evaluated. The results of the durability test are shown together in Table 3. From these test results, when the thermal conductivity of the resin composition is about 0.5 W / m · K or more, heat dissipation is promoted, and the effect of suppressing the increase of the bearing inner ring temperature is exhibited. As a result, the durability of the rolling bearing is exhibited. It was found that the service life was extended.
[0022]
【The invention's effect】
As described above, according to the present invention, the resin pulley portion of the resin pulley has a heat conductivity of 0.51 W / m · in which a heat-resistant resin is blended with a filler having a high heat conductivity. Since it is formed by using a resin composition having K or more, the heat dissipation generated during the operation of the resin pulley is promoted, and as a result, there is an effect that it is possible to provide a long life resin pulley excellent in heat resistance.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a resin pulley according to the present invention.
FIG. 2 is a cross-sectional view taken along the line II-II in FIG.
FIG. 3 is a schematic view of a testing machine.
[Explanation of symbols]
1 Rolling bearing 2 Resin pulley

Claims (5)

転がり軸受と、その外周に一体に成形された樹脂プーリ部と、からなる樹脂製プーリにおいて、当該樹脂プーリ部を、樹脂と熱伝導率が5W/m・K以上の充填材とを含有し熱伝導率が0.51W/m・K以上である樹脂組成物で構成するとともに、前記樹脂を66ナイロン樹脂,46ナイロン樹脂,6−12共重合ナイロンと66ナイロンとの混合樹脂,11ナイロンと66ナイロンとの混合樹脂,12ナイロンと66ナイロンとの混合樹脂,芳香族ポリアミド樹脂,又はポリフェニレンサルファイド樹脂とし、前記充填材をアルミナ,窒化ホウ素,炭化ケイ素,シリカ,酸化チタン,カーボン繊維,グラファイト,又はカーボンブラックとし、さらに、前記充填材の含有率を前記樹脂組成物の30重量%以上50重量%以下としたことを特徴とする樹脂製プーリ。A resin pulley comprising a rolling bearing and a resin pulley part integrally formed on the outer periphery thereof , wherein the resin pulley part contains a resin and a filler having a thermal conductivity of 5 W / m · K or more and contains heat. The resin is composed of a resin composition having a conductivity of 0.51 W / m · K or more, and the resin is made of 66 nylon resin, 46 nylon resin, 6-12 copolymer nylon and 66 nylon mixed resin, 11 nylon and 66 Mixed resin with nylon, mixed resin of 12 nylon and 66 nylon, aromatic polyamide resin, or polyphenylene sulfide resin, and the filler is alumina, boron nitride, silicon carbide, silica, titanium oxide, carbon fiber, graphite, or and carbon black, further, that the content of the filler was less than 50 wt% 30 wt% or more of the resin composition Resin pulley according to symptoms. 前記樹脂組成物の熱伝導率が0.75W/m・K以上であることを特徴とする請求項1に記載の樹脂製プーリ。2. The resin pulley according to claim 1, wherein the resin composition has a thermal conductivity of 0.75 W / m · K or more. 前記樹脂組成物が、12ナイロンと66ナイロンとの混合樹脂50重量%以上60重量%以下と、カーボン繊維50重量%以下40重量%以上と、からなることを特徴とする請求項2に記載の樹脂製プーリ。3. The resin composition according to claim 2, wherein the resin composition comprises a mixed resin of 12 nylon and 66 nylon of 50 wt% or more and 60 wt% or less and carbon fiber 50 wt% or less and 40 wt% or more. Resin pulley. 前記樹脂組成物が、ポリフェニレンサルファイド樹脂50重量%と、アルミナ30重量%以上50重量%以下と、を含有することを特徴とする請求項2に記載の樹脂製プーリ。The resin pulley according to claim 2, wherein the resin composition contains 50% by weight of a polyphenylene sulfide resin and 30% by weight or more and 50% by weight or less of alumina. 前記樹脂組成物が、さらに20重量%以下のガラス繊維を含有することを特徴とする請求項4に記載の樹脂製プーリ。The resin pulley according to claim 4, wherein the resin composition further contains 20% by weight or less of glass fiber.
JP11526398A 1998-04-24 1998-04-24 Resin pulley Expired - Lifetime JP4172055B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11526398A JP4172055B2 (en) 1998-04-24 1998-04-24 Resin pulley

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11526398A JP4172055B2 (en) 1998-04-24 1998-04-24 Resin pulley

Publications (2)

Publication Number Publication Date
JPH11311313A JPH11311313A (en) 1999-11-09
JP4172055B2 true JP4172055B2 (en) 2008-10-29

Family

ID=14658351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11526398A Expired - Lifetime JP4172055B2 (en) 1998-04-24 1998-04-24 Resin pulley

Country Status (1)

Country Link
JP (1) JP4172055B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006200599A (en) * 2005-01-19 2006-08-03 Nsk Ltd Bearing device

Also Published As

Publication number Publication date
JPH11311313A (en) 1999-11-09

Similar Documents

Publication Publication Date Title
JP3192082B2 (en) Resin pulley
JP4946498B2 (en) Resin pulley
JPH11170397A (en) Thrust washer for high speed and high surface pressure slide
CN103534517A (en) Seal ring
JP2924221B2 (en) Resin composition for resin wound bearing
US7452926B2 (en) Resin pulley formed of a resin composition having a phenol resin, an inorganic powder , a reinforcing fiber, and a lubricant
CN108138919A (en) Accessory drive belt tensioner
JP4172055B2 (en) Resin pulley
JP4171899B2 (en) Resin pulley
JP4296748B2 (en) Bearing and its mounting structure
JP2002146158A (en) Phenolic resin molding material for automobile pulley and phenolic resin pulley for automobile
JPH07310748A (en) Rolling bearings to prevent electrolytic corrosion
JP2018132163A (en) Resin pulley
JP4389624B2 (en) Synthetic resin pulley
JP2004339352A (en) Phenolic resin molding materials and pulleys
JP4589154B2 (en) Seal ring
JP2000227120A (en) Rolling bearing
JPH09183867A (en) Wiper blade rubber
EP1967765B1 (en) Resinous pulley and resin composition
JP4375081B2 (en) Resin pulley
JP2007051763A (en) Bearing device
JP2007192386A (en) Pulley device
JP2005076859A (en) Resin pulley and manufacturing method thereof
JP2007107614A (en) Roller bearing cage
JP4572844B2 (en) Resin pulley

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20050421

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080207

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20080212

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20080408

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: 20080722

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: 20080804

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

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

Free format text: PAYMENT UNTIL: 20110822

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20110822

Year of fee payment: 3

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

Free format text: PAYMENT UNTIL: 20120822

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20120822

Year of fee payment: 4

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

Free format text: PAYMENT UNTIL: 20130822

Year of fee payment: 5

S801 Written request for registration of abandonment of right

Free format text: JAPANESE INTERMEDIATE CODE: R311801

ABAN Cancellation due to abandonment
R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350