| 摘要 |
PURPOSE:To flatten the frequency characteristic of a noise by varying the pit of a block through a process of suitably reversing the longitudinal direction of a link at an internode between the blocks between the nodes of fore and aft links. CONSTITUTION:Protrusions 30 and 32, where torque from a block 22 is received, are installed in opposition to each other while sandwiching the block 22. Recesses 36 are formed respectively, between the protrusions 30 and 32, to accommodate the block 22. The recesses 36 are to be offset against either one of pin holes 34 and 35 located respectively in the front and in the rear of a link 18. Generation of an uncomfortable noise can be prevented by this constitution because the noise frequency characteristic can be flattened.
|
