The utility model discloses a symmetrical clip of a column, including a left mirror frame and a right mirror frame. The upper part of the left mirror and the right mirror frame is separately arranged with a pull column, and the circumferential expansion setting of the protruding end end of the two pull column is extended into a wrapping tube, and the inside of the tube is provided with a step shape through hole, and the large hole of the step shaped through hole is arranged. The large end of the pull column is matched and slightly larger than the enlarged end of the pull column so that the pull column can move horizontally in a large hole. The small hole of the step hole is smaller than the horizontal section of the pull column, so that the rod body can move horizontally in a small hole in the small hole, and the large hole is slipped through the small hole, and the large hole is close to the large hole. A removable connection of the open end is provided with a movable sleeve located in the outside of the pull rod, and a spring is set on the two pull column respectively. The spring is elastically compressed between the limit pipe and the bulky end, or between the small hole and the bulky end. The utility model has the advantages of symmetrical pulling out of the two pull rods after drawing.
【技术实现步骤摘要】
包柱对称的夹片
本技术涉及眼镜配件,尤其是涉及一种拉开之后二拉柱对称拉出的包柱对称的夹片。
技术介绍
眼镜夹片主要是为一些带镜人群设计的,用于夹在眼镜外面与眼镜结合在一起使用,因此也称为“套镜”。常见的如偏光太阳镜夹片和3D夹片,把偏光太阳镜夹片夹在近视眼镜或远视眼镜外面,可以有效防炫光、防紫外线,对于驾驶、钓鱼等户外运动项目,具有很好的保护眼睛的作用;将3D夹片在近视眼镜或远视眼镜外面,可以用于观看3D电影。为了适应不同大小的眼镜,都会做成能拉开的传统的夹片是一端固定一个包柱,另一端伸入包柱且能够水平活动拉伸,这种夹片在拉开之后包柱偏向一侧左右不对称会影响美观,美观那就也是不许考虑的一个重点。本专利中提到的外包围杆体是不限制形状和大小的,另外外包围杆体的内部空心部分的形状也是不限制的,只要能吧拉簧包住即可。当然空心部分采用能够防止拉簧转动的非圆形形状是首选。
技术实现思路
为克服现有技术的缺点,本技术目的在于提供一种拉开之后二拉柱对称拉出的包柱对称的夹片。本技术通过以下技术措施实现的,一种包柱对称的夹片,包括左镜框和右镜框,所述左镜框和右镜框的上方分别相向设置有一条拉柱 ...
【技术保护点】
一种包柱对称的夹片,其特征在于:包括左镜框和右镜框,所述左镜框和右镜框的上方分别相向设置有一条拉柱,二拉柱的伸出端相向活动伸入一包管内,所述拉柱的伸出端端部周向膨大设置,所述包管内设置有台阶形通孔,所述台阶形通孔的大孔与拉柱的膨大端相匹配且稍大于拉柱的膨大端以使拉柱能活动地在大孔内水平滑动,所述台阶形通孔的小孔小于拉柱的膨大端大于拉柱杆体的横切面以使拉柱杆体能活动地小孔内水平滑动而限制膨大端从小孔滑过,所述大孔靠近包管开口端可拆卸连接有一活动套设在拉柱杆体外的限位管,二拉柱上分别套设有一弹簧,所述弹簧分别弹性压缩在限位管与膨大端之间或小孔与膨大端之间。
【技术特征摘要】
1.一种包柱对称的夹片,其特征在于:包括左镜框和右镜框,所述左镜框和右镜框的上方分别相向设置有一条拉柱,二拉柱的伸出端相向活动伸入一包管内,所述拉柱的伸出端端部周向膨大设置,所述包管内设置有台阶形通孔,所述台阶形通孔的大孔与拉柱的膨大端相匹配且稍大于拉柱的膨大端以使拉柱能活动地在大孔内水平滑动,所述台阶形通孔的小孔小于拉柱的膨大端大于拉柱杆体的横切面以使拉柱杆体能活动地小孔内水平滑动而限制膨大端从小孔滑过,所述大孔靠近包管开口端可拆卸连接有一活动套设在拉柱杆体外的...
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