SYNCHRONOUS BELT

• Main Authors: FUJIWARA KATSUYOSHI, SEKIGUCHI YUJI
• Format: Patent
• Language: English; Japanese
• Published: 11.11.2022
• Subjects: BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVINGPURPOSES; BLASTING; CABLES OTHER THAN ELECTRIC; CHAINS; CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, ORYARNS; ENGINEERING ELEMENTS AND UNITS; FITTINGS PREDOMINANTLY USED THEREFOR; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LAUNDERING; LIGHTING; MECHANICAL ENGINEERING; MECHANICAL FINISHING OF YARNS OR ROPES; ROPES; ROPES OR CABLES IN GENERAL; TEXTILES; THERMAL INSULATION IN GENERAL; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; WARPING OR BEAMING; WEAPONS; YARNS; YARNS OR THREADS

To provide a toothed belt 10 that has excellent flexural fatigue resistance and is suitable for high load transmission.SOLUTION: A toothed belt 10 has a belt body 11 having a back rubber part 11a and a tooth rubber part 11b both of which are composed of a thermoplastic elastomer composition, a core wire 13 buried in the back rubber part 11a, and a tooth part covering material 14 that covers the tooth rubber part 11b. The thermoplastic elastomer composition comprises an elastomer component that is a polyamide thermoplastic elastomer or a polyester thermoplastic elastomer. The back rubber part 11a has hardness of 25-70. The tooth rubber part 11b has hardness of 40-70, which is equal to or greater than the hardness of the back rubber part 11a. The core wire 13 has yarn 16 having two or more twist layers. The yarn 16 includes two or more strands 17. Each strand 17 comprises multiple twisted filaments 18 containing a carbon filament composed of a carbon fiber.SELECTED DRAWING: Figure 1 【課題】耐屈曲疲労性に優れ、高負荷伝動に適した、歯付ベルト１０の提供。【解決手段】歯付ベルト１０は、熱可塑性エラストマー組成物からなる背ゴム部１１ａ及び歯ゴム部１１ｂを有するベルト本体１１、背ゴム部１１ａに埋設された心線１３及び歯ゴム部１１ｂを被覆する歯部被覆材１４を備える。熱可塑性エラストマー組成物のエラストマー成分はポリアミド系熱可塑性エラストマー又はポリエステル系熱可塑性エラストマーである。背ゴム部１１ａの硬さは２５～７０である。歯ゴム部１１ｂの硬さは、４０～７０であり、かつ背ゴム部１１ａの硬さ以上である。心線１３は２以上の撚り階層を有するヤーン１６を備える。ヤーン１６は２本以上のストランド１７を含む。それぞれのストランド１７はカーボン繊維からなるカーボンフィラメントを含む、多数のフィラメント１８を撚り合わせてなる。【選択図】 図１