The invention discloses a three segment type expansion screw, including expansion rod, the expansion nut and the expansion sleeve of the expansion sleeve is sheathed on the expansion rod; one end of the expansion rod is provided with a thread, the other end is provided with a conical central expansion rod uniformly convex edge is provided with two sections of I; the expansion sleeve is provided with two sections of convex edge II I matched with the convex ribs; the expansion nut is installed on one end of the expansion rod is provided with threads; the expanding nuts are symmetrically arranged on the through hole; the through hole is provided with a fixed pin; wherein one end of the expansion sleeve a pin for blind installation. The beneficial effect of the invention is that the middle section of the expansion bar is uniformly provided with two sections of convex ribs; the I and the expansion sleeve are provided with two sections of convex II matched with the convex rib I, so that the expansion screw expands integrally. At the same time, when the expansion nut is tightened and the cone enters the inner part of the expansion sleeve, the fixed pin is matched with the through hole and the blind hole, so that the expansion nut is formed to be fixed for two times and is not easy to slide, so as to ensure the firmness of the expansion screw component.
【技术实现步骤摘要】
一种三段式膨胀螺钉
本专利技术属于一种用于在墙体上悬挂或固定物件,特别涉及一种整体膨胀的三段式胀螺钉组件。
技术介绍
现有的膨胀螺钉在使用时,先在墙体上凿一个与膨胀套的直径和长度相匹配的长孔,然后往长孔内放入膨胀螺钉组件,并再转动其上的螺母;螺母的转动即时顶推膨胀套向左移动,当膨胀套接触到螺杆的倒圆锥时,膨胀套的槽口所在段开始扩张,且随着膨胀套的左行而不断膨胀,直至膨胀螺钉在墙体内紧固。现有的膨胀螺钉还有以下的缺点:它虽能在墙体上可靠固定、以供人们放心使用,但在人们不需用它时就不能将它卸下,除非将其外露段锯掉;否则膨胀螺钉的螺杆外露段就继续留存在墙体上,既使墙体不平整整洁,又碍于人们的日常行动,同时现有的膨胀螺钉都是尾部膨胀固定效果欠佳,缺乏一种整体膨胀的胀螺钉组件,来提高固定效果,现有的扩胀螺母缺乏固定装置十分容易滑丝,严重影响胀螺钉组件的安装效果。
技术实现思路
本专利技术所要解决的技术问题是提供一种方便拆卸、安装牢固和使用安全的膨胀螺钉组件。为解决上述问题,本专利技术的技术方案是:一种三段式膨胀螺钉,包括扩胀杆、扩胀螺母和膨胀套所述膨胀套套接在扩胀杆上;所述扩胀 ...
【技术保护点】
一种三段式膨胀螺钉,其特征在于:包括扩胀杆(1)、扩胀螺母(2)和膨胀套(3)所述膨胀套(3)套接在扩胀杆(1)上;所述扩胀杆(1)的一端设有螺纹,另一端的设有圆锥,扩胀杆(1)的中部均匀的设有两段凸楞I(1.1);所述膨胀套(3)内部设有与凸楞I(1.1)相配合的两段凸楞II(3.1);所述扩胀螺母(2)安装在扩胀杆(1)上设有螺纹的一端;所述扩胀螺母(2)上对称设置有通孔(2.2);所述通孔(2.2)内安装有固定销钉(2.1);所述膨胀套(3)的一端设有用于安装销钉的盲孔(3.2)。
【技术特征摘要】
1.一种三段式膨胀螺钉,其特征在于:包括扩胀杆(1)、扩胀螺母(2)和膨胀套(3)所述膨胀套(3)套接在扩胀杆(1)上;所述扩胀杆(1)的一端设有螺纹,另一端的设有圆锥,扩胀杆(1)的中部均匀的设有两段凸楞I(1.1);所述膨胀套(3)内部设有与凸楞I(1.1)相配合的两段凸楞II(3.1);所述扩胀螺母(2)安装在扩胀杆(1)上设有螺纹的一端...
【专利技术属性】
技术研发人员:李伟,
申请(专利权)人:成都佳格科技有限公司,
类型:发明
国别省市:四川,51
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