Select wire drawing joint structure of shifting

The utility model provides a select wire drawing joint structure of shifting, it is chosen and shifts gears the wire drawing and pass through plastics wire drawing card and fix on the wire drawing support, plastics wire drawing card is the U type and includes: lieing in the holding ring on two inner walls, lieing in the locating detent in the bottom axial outside and lie in the jack catch of opening part both sides, present structural defect is overcome to this novel structure, provides one kind and connects reliably, can lock convenient dismantlement, but reuse's select wire drawing joint structure of shifting voluntarily. 种选换挡拉丝卡接结构，其中选换挡拉丝通过塑料拉丝卡片固定在拉丝支架上，所述塑料拉丝卡片呈U型并包括：位于两内壁上的定位环，位于底部轴向外侧的定位爪，和位于开口处两侧的卡爪，该新型结构克服现有结构缺陷，提供种连接可靠，可以自动锁紧，方便拆卸，可重复利用的选换挡拉丝卡接结构。