| 摘要 |
A one piece connecting rod (11) for coupling a piston and crankshaft (23) to convert between reciprocating and rotary motion as might be used in an internal combustion engine is formed of a lightweight material such as aluminium, which material is of an inadequate hardness to form a roller bearing race. The rod includes an elongate arm portion having enlarged annular portions at opposite ends thereof and with one of those annular portions having an opening (13) for receiving, in a press fit manner, a hardened steel liner (17) to provide an outer bearing race. Rollers (27) are then interposed between this outer race and an eccentric portion (25) of a crankshaft (23) while the other enlarged annular portion receives a bearing (19) for connection to a piston wrist pin. |
