The invention provides a quick-disassembly expansion screw, which comprises a screw, an inverted conical expansion head at one end of the screw, an expansion tube sleeved outside the screw, a plurality of expansion grooves are arranged on the outer wall of the expansion head towards one end of the expansion head, the screw is provided with an external thread relative to one end of the expansion head, and the external thread is provided with an expandable tube. A gasket is arranged between the cam handle and the expansion pipe. The gasket includes a metal base, a self-lubricating layer is arranged on one side of the metal base facing the cam handle, and an arc matching surface matching the eccentric surface of the cam handle is arranged on the self-lubricating layer. The overall structure of the invention is simple, and no wrench is needed in installation, so it can be used in the occasion of frequent disassembly and assembly. Because the traditional expansion screw depends on nut locking, it will lead to thread wear and tear in long-term disassembly and assembly. The invention is tightened by the cam handle. In the early stage, only the cam handle is slightly tightened with the bolt, and then the cam handle is pulled. It can be locked and has a long service life.
【技术实现步骤摘要】
一种快拆式膨胀螺钉
本专利技术涉及建筑领域,具体涉及一种快拆式膨胀螺钉。
技术介绍
膨胀螺钉在建筑领域非常常见,往往用来安装各种吊顶、路灯等物件,其主要结构为螺钉体,套设于螺钉体外部的膨胀管,以及旋于螺钉体上的螺母组成,螺钉体一端设有膨胀头,通过在墙体上打孔后,将膨胀螺钉装入墙体,通过旋转螺母使螺母拉动螺钉体在膨胀管内轴向移动,进而使膨胀头撑开膨胀管,使螺钉体牢牢固定于墙体上,然后松开螺母,装入需要安装至墙体上的物品(如路灯、架子等等),因此就需要多次旋合螺母,导致拆装不便。
技术实现思路
基于上述问题,本专利技术目的在于提供一种结构简单,拆装方便,固定牢固的快拆式膨胀螺钉。针对以上问题,提供了如下技术方案:一种快拆式膨胀螺钉,包括螺钉,所述螺钉一端设有倒锥形膨胀头,所述螺钉外部套有膨胀管,所述膨胀管朝向膨胀头一端的外壁设有若干膨胀槽,所述螺钉相对于膨胀头的一端设有外螺纹;所述外螺纹上设有可拆式的凸轮手柄,所述凸轮手柄与膨胀管之间设有垫片,所述垫片包括金属基体,所述金属基体朝向凸轮手柄的一面设有自润层,所述自润层上设有与凸轮手柄偏心面相适配的圆弧配合面。上述结构中,通过将凸轮手柄结合到膨胀螺钉上,利用凸轮手柄的偏心原理使膨胀螺钉实现快拆,免去了传统膨胀螺钉在安装膨胀时需要扳手对螺母进行锁紧使膨胀管膨胀,后期又需要通过扳手拆卸螺母,进一步将需要安装的物件安装于螺钉上后通过扳手锁紧螺母的繁琐手续;由于考虑到凸轮手柄在锁紧时是利用凸轮面压于垫片上实现缩锁紧,因此需要在垫片上设置金属基体及自润层,金属基体可分散轴向锁紧力,自润层可减少凸轮手柄锁紧时的摩擦。本专利技术进 ...
【技术保护点】
1.一种快拆式膨胀螺钉,包括螺钉,所述螺钉一端设有倒锥形膨胀头,所述螺钉外部套有膨胀管,所述膨胀管朝向膨胀头一端的外壁设有若干膨胀槽,其特征在于:所述螺钉相对于膨胀头的一端设有外螺纹;所述外螺纹上设有可拆式的凸轮手柄,所述凸轮手柄与膨胀管之间设有垫片,所述垫片包括金属基体,所述金属基体朝向凸轮手柄的一面设有自润层,所述自润层上设有与凸轮手柄偏心面相适配的圆弧配合面。
【技术特征摘要】
1.一种快拆式膨胀螺钉,包括螺钉,所述螺钉一端设有倒锥形膨胀头,所述螺钉外部套有膨胀管,所述膨胀管朝向膨胀头一端的外壁设有若干膨胀槽,其特征在于:所述螺钉相对于膨胀头的一端设有外螺纹;所述外螺纹上设有可拆式的凸轮手柄,所述凸轮手柄与膨胀管之间设有垫片,所述垫片包括金属基体,所述金属基体朝向凸轮手柄的一面设有自润层,所述自润层上设有与凸轮手...
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