| 摘要 |
PURPOSE:To facilitate the inserting and fitting work of a lower part link to a W arm by inserting a shaft piece via a bearing into the shaft hole of the base part of a lower part link, fixing the shaft piece to the shaft center part side face of the W arm and fitting the lower part link. CONSTITUTION:A truncated conical surface F is formed at one side face of a base part 40 on the lower part link and a hole H is pierced on the shaft at the center thereof. A shaft piece 41 is composed of a flange and shaft and four holes are pierced thereon. On a W arm 3 the recessed part C1 in a truncated conical shape is formed on one side face of the base part thereof and the recessed part C2 for fitting the shaft tip of the shaft piece 41 at the center part thereof. The shaft piece 41 is then penetrated into the shaft hole H of the lower part link after fitting a bearing B and oil seal 42 onto the shaft of the shaft piece 41, the tip of the shaft is fitted into the recessed part C2 of the W arm 3 via 0 ring 43 and screwed by a screw S1. Consequently, the assembly can be done after the lower part link having fitted in advance the shaft piece 41, bearing B and oil seal 42, so the assembly work can be facilitated. |
