Patent TW-338782-B (TW)
Title: Transmission gear
Inventor: HASHIMOTO AKIO
IPC: F16H1/32
Filed: 1997-07-15
Granted: 1998-08-21
Abstract: A transmission gear for transmission of 2 rotary movements from a driving mechanism (21, 42) to a working mechanism (81, 82, 83), having: a first input shaft member (13; 313) on which one of the rotary movements is applied and with a non-circulat peripheral portion (13a, 313a); a second input shaft member (14; 314) on which the other rotary movement is applied and with a non-circulat peripheral portion (14a, 314a); a first input shaft member (15; 115; 215; 315) in an axial straight line with the first input shaft member (13; 313), having an axial and symmetrical and spaced internal circular portion (15a; 115a; 215a; 315a) with the non-circular peripheral portion (13a; 313a) of the first input shaft member (13, 313); a second input shaft member (16; 116; 216; 316) in an axial straight line with the second input shaft member (14; 314), having an axial and symmetrical and spaced internal circular portion (16a; 116a; 216a; 316a) with the non-circular peripheral portion (14a; 314a) of the first input shaft member (14, 314); and aflexible cylindrical member (12; 112; 212; 312) axially winding the non-circular peripheral portion (13a, 14a; 313a, 314a) of the first and the second input shaft member (13, 14; 313, 314) and at the same time axially wound from the internal peripheral portion (15a, 16a; 115a, 116a; 215a, 216a; 315a, 316a) of the first and the second output shaft members (15, 16; 115, 116; 215, 216; 315, 316), driven the first and the second input shaft members (13, 14; 313, 314) and the first and the second output shaft member (15, 16; 115, 116; 215, 216; 315, 316) by the axial line surrounding the flexible cylindrical emebers (12; 112; 212; 312), having the flexible cylindrical members (12; 112; 212; 312) first transformable intervening portions (21; 121; 221; 321) between the non-circular peripheral portion (13a, 313a) of the first input shaft member (13; 313) and the internal circular portion (15a; 115a; 215a; 315a) of the first output shaft member (15; 115; 215; 315), having the flexible cylindrical members (12; 112; 212; 312) further a second transformable intervening portion (22; 122; 222; 322) between the non-circular peripheral portion (14a, 314a) of the second input shaft member (14; 314) and the internal circular portion (16a; 116a; 216a; 316a) of the first output shaft member (16; 116; 216; 316), engaging the non-circular peripheral portion (13a, 14a; 313a, 314a) of the first and the second input shaft member (13, 14; 313, 314) by means of the first and the second transformable intervening portion (21, 22; 121, 122; 221, 222; 321, 322) with the internal circular portion (15a, 16a; 115a, 116a; 215a, 216a, 315a, 316a) of the first and the second output shaft members (15, 16; 115, 116; 215, 216; 315, 316), being the first transformable intervening portion (21; 121; 221; 321) of the flexible cylindrical member (12; 112; 212; 312) transformable along with the rotary movement of the non-circular peripheral portion (13a; 313a) for rotation of the internal circular (15a; 115a; 215a; 315a) first output shaft member (15; 115; 215; 315), being the second transformable intervening portion (22; 122; 222; 322) of the flexible cylindrical member (12; 112; 212; 312) transformable along with the rotary movement of the non-circular peripheral portion (14a; 314a) for rotation of the internal circular (16a; 116a; 216a; 316a) second output shaft member (16; 116; 216; 316), having the flexible cylindrical member (12; 112; 212; 312) further a buffer (12e) between the first and the second transformable intervening portion (21, 22; 121, 122; 221, 222; 321, 322) for independent transformation of the first and the second transformable intervening portion (21, 22; 121, 122; 221, 222; 321, 322) without interference with transmission of the independent rotation from the first and the second input shaft member (13, 14; 313, 314) respectively to the first and the second output shat member (15, 16; 115, 116; 215, 216;315, 316).