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; CHAINS; ENGINEERING ELEMENTS AND UNITS; FITTINGS PREDOMINANTLY USED THEREFOR; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; THERMAL INSULATION IN GENERAL; WEAPONS

To provide a toothed belt 10 that achieves reduced dust emission 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 plurality of tooth rubber parts 11b, with the back rubber part 11a and the tooth rubber parts 11b composed of a thermoplastic elastomer composition; a core wire 13 buried in an inner peripheral portion of the back rubber part 11a; a tooth part covering material 14 that covers the plurality of tooth rubber parts 11b; and a side member 22 that is laminated on an end face 11 s of the belt body 11 and forms a belt end face 10 s. The thermoplastic elastomer composition comprises an elastomer component that is TPAE or TPC. The thermoplastic elastomer composition constituting the back rubber part 11a has hardness of 25-70, and the thermoplastic elastomer composition constituting the tooth rubber part 11b has hardness of 40-70, which is equal to or greater than the hardness of the thermoplastic elastomer constituting the back rubber part 11a. The core wire 13 contains a carbon filament and is not exposed from the belt end face 10 s.SELECTED DRAWING: Figure 1 【課題】低発塵性であり、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、背ゴム部１１ａと、複数の歯ゴム部１１ｂとを有し、背ゴム部１１ａ及び歯ゴム部１１ｂが熱可塑性エラストマー組成物からなるベルト本体１１と、背ゴム部１１ａの内周側の部分に埋設された心線１３と、複数の歯ゴム部１１ｂを被覆する歯部被覆材１４と、ベルト本体１１の端面１１ｓに積層され、ベルト端面１０ｓをなす側部材２２とを備え、熱可塑性エラストマー組成物のエラストマー成分がＴＰＡＥ、又はＴＰＣであり、背ゴム部１１ａを構成する熱可塑性エラストマー組成物の硬さが２５～７０であり、歯ゴム部１１ｂを構成する熱可塑性エラストマー組成物の硬さが４０～７０であり、かつ背ゴム部１１ａを構成する熱可塑性エラストマー組成物の硬さ以上であり、心線１３は、カーボンフィラメントを含み、ベルト端面１０ｓに露出していない。【選択図】 図１