| 摘要 |
A moving contact head for tap switches comprises a moving contact head installation plate component (200) rotating with a switch main shaft (100), and a holder-type moving contact head (300) arranged on the moving contact head installation plate component (200). The holder-type moving contact head (300) is divided into two sets of upper and lower moving contact head components, which are connected to each other and formed a holder shape; wherein, each moving contact head component comprises a moving contact head unit (320) consisting of a plurality of single moving contact heads (321) in parallel, and a leaf spring component (330) arranged on the moving contact head component (320); both ends of each single moving contact head (321) are provided with a contact point, respectively. A contacting ring (500) is clamped at one ends of the two moving contact head units (320), and a static contact head (600) is clamped the other ends of the two moving contact head units to deform a leaf spring (331) in the leaf spring component (330). However, the reaction force by the leaf spring (331) causes the moving contact head unit (320) to contact with the contacting ring (500) and the static contact head (600) to achieve on-state of large current.
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