The nut is easy to disassemble and the anti-drop expansion screw
An expansion screw, easy-to-remove technology, applied in the directions of pins, connecting components, mechanical equipment, etc., can solve the problems that the nut cannot be disassembled, the screw falls and hurts people, etc., and achieves the effect of easy disassembly, simple operation, and not easy to fall and hurt people.
Active Publication Date: 2017-07-04
深圳市宝科特精密科技有限公司
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- Application Information
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Problems solved by technology
[0003] The present invention is dedicated to solving the defects in the prior art that the nut cannot be disassembled after the nut and the screw are rotated at the same time, and the remaining screw will fall and hurt people after disassembly
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Embodiment 1
[0014] 1. In the attached figure 1 , attached figure 2 In shown embodiment 1, comprise screw rod, expansion sleeve, nut and gasket, one end of described screw rod 1 is provided with screw thread, and the other end is provided with positioning shaft, and positioning shaft axial middle is provided with through positioning hole 1.2, and positioning The hole 1.2 is fitted with a positioning pin 5, and the middle of the outer circle of the positioning pin 5 is provided with a trapezoidal groove 5.2 with a large outside and a small inside. Extrusion rod hole 1.3, the extrusion rod hole 1.3 is provided with screw hole 1.4 at the threaded end of the screw rod 1, the extrusion rod hole 1.3 is provided with an extrusion rod 6, and one end of the extrusion rod 6 is provided with a trapezoidal groove 5.2 Tapered head 6.1, the other end of the extruding rod 6 is provided with an external thread adapted to the screw hole 1.4, the middle of the external thread end of the extruding rod 6 is...
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The invention discloses an anti-dropping expansion screw with an easily-detachable nut and is aimed at providing the anti-dropping expansion screw with the easily-detachable nut. The nut is easily detached and does not easily drop down and is safe and is easily operated. The anti-dropping expansion screw comprises a screw rod, an expansion screw, a nut and a gasket. One end of the screw rod is provided with a screw thread and the other end of the screw rod is provided with a positioning shaft. The center of the positioning shaft in an axial direction is provided with a communicating positioning hole, in which a positioning pin is adapted. The middle of an excircle of the positioning pin is provided with a trapezoid-shaped slot with a large outer portion and a small portion. The middle of the trapezoid-shaped slot is provided with a pre-breaking shaft. The center of the screw rod is provided with an extrusion rod hole, in which an extrusion rod is arranged. The two-end length of the positioning pin is the same as the diameter of the excircle of the positioning shaft. When the extrusion rod downwardly extrudes the positioning pin, the pre-breaking shaft of the positioning pin is enabled to be break and separate. The end portion of the positioning pin enters the hole wall of an expansion screw hole. The screw rod is firmly fixed into the expansion screw hole such that the nut is easily detached. The expansion screw left on a wall does not hurt people and is easily operated.
Description
technical field [0001] The invention relates to a screw for hanging or fixing objects on a wall in the field of building decoration and decoration, more specifically, an expansion screw whose nut is easy to disassemble and prevents falling. Background technique [0002] The current expansion screw is generally a screw rod with an inverted cone and an expansion sleeve that is sleeved on the screw rod and has an expandable notch. The expansion screw hole is then put into the expansion screw, and the expansion sleeve is enlarged by tightening the nut on the screw rod until the expansion screw is fastened in the wall. An "expansion screw that can be easily assembled and disassembled" disclosed in Chinese patent documents, its publication number is CN2057612, the "expansion screw that can be easily assembled and disassembled" in this technical solution mainly includes an inverted cone at one end, A screw with a threaded section at the other end, an expansion sleeve that is loope...
Claims
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IPC IPC(8): F16B13/06
CPCF16B13/065F16B13/066
Inventor 王迎春
Owner 深圳市宝科特精密科技有限公司