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发明名称
膨胀螺丝
摘要
本实用新型公开了一种膨胀螺丝,它克服了现有技术的膨胀螺丝不能退出的不足,该膨胀螺丝是由螺纹、螺母、膨胀体、膨胀口、T形螺杆、T形头构成,其特征是在膨胀螺丝的膨胀体内端安装一个固定螺母,该螺母与T形螺杆上的螺纹相一致,安装正常时把T形螺杆上的螺母旋紧即可。安装需要退出膨胀螺丝时,只要固定膨胀体上的固定螺母,继续装T形螺杆上的螺母旋转使膨胀体退出墙体,达到膨胀螺丝退出目的。本实用新型的有益效果是结构比较简单,成本比较低廉,实用性较强。
申请公布号
CN200964982Y
申请公布日期
2007.10.24
申请号
CN200620134623.9
申请日期
2006.08.02
申请人
冯瑞春
发明人
冯瑞春
分类号
F16B13/06(2006.01)
主分类号
F16B13/06(2006.01)
代理机构
代理人
主权项
1.一种能够使膨胀体退出的膨胀螺丝,由螺纹(1)、螺母(2)、螺母(3)、膨胀体(4)、膨胀口(5)、T形螺杆(6)、T形头(7)构成,其特征是在膨胀螺丝的膨胀体(4)内端安装一个固定螺母(3)。
地址
322003浙江省义乌市赤岸镇后山村
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