Primary and secondary type building buckle
It is a technology of mother-in-law and fastener, which is applied in the direction of construction, building structure, pipe/pipe joint/pipe fitting, etc. It can solve the problems that it cannot be used to connect pipes of different diameters, the anti-skid ability is reduced, and the bending strength and rigidity are low.
Inactive Publication Date: 2009-11-18
JIANGYAN DAHUA MACHINERY FACTORY
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Problems solved by technology
The existing fasteners are generally composed of two sub-fasteners with the same hole diameter, which cannot be used to connect pipes with different diameters, and the application range is limited. The traditional fasteners are cast iron parts, which have many disadvantages. Made fasteners, there is a significant improvement
Chinese patent application number: 2003101159267 discloses a kind of anti-skid building fastener, which is formed by connecting two sub-fasteners with the same aperture through riveting, which can improve the tensile strength. The curved surface of the fastener has teeth , to play the role of anti-slip, but the tip of the tooth is easy to wear, and after a period of use, the anti-slip ability will decrease; and the upper and lower covers of the fastener are not clearly provided with flanging or ribs, making its bending strength and rigidity relatively low
Method used
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[0009] Referring to the accompanying drawings, the son-mother type architectural fastener is riveted by the sub-fastener and the female fastener, which can be rotated arbitrarily. The inner hole of the sub-fastener is obviously smaller than the inner hole of the female fastener. 3. The upper cover 7 and the lower cover 1 of the sub-fastener are all stamped steel parts, and are provided with reinforcing ribs 8. The middle parts of the upper cover and the lower cover have arc-shaped protrusions 2 punching inward. Co-located on the same cylindrical surface as the inner surfaces on both sides of the upper and lower covers, the nut 5 on the female fastener and the nut 6 on the female fastener have different screw hole sizes and the same external dimensions.
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The invention discloses a female and female building fastener, which is formed by riveting two female and female fasteners with obviously different inner hole diameters, the upper and lower covers of the two fasteners are steel stamping parts, the upper cover and the lower cover There are reinforcing ribs, and the middle part of the upper and lower covers has an inward arc-shaped protrusion. The surface of the arc-shaped protrusion is on the same cylindrical surface as the two sides of the upper and lower covers. The outer dimensions of the nuts on the female and female fasteners unanimous. The fastener is used to build construction scaffolding, building guardrails, planting greenhouses, etc. It can be connected to pipes of different diameters, can be rotated, and has a wide range of applications. Moreover, the fastener is light in weight, good in bending strength and rigidity, and has long-lasting anti-skid ability , easy to use.
Description
technical field [0001] The invention relates to a construction fastener, in particular to a female-complex construction fastener used for connecting pipes with different diameters. Background technique [0002] When building construction scaffolding, building guardrails, roadblocks and fruit and vegetable planting greenhouses, building fasteners are inseparable. The existing fasteners are generally composed of two sub-fasteners with the same hole diameter, which cannot be used to connect pipes with different diameters, and the application range is limited. The traditional fasteners are cast iron parts, which have many disadvantages. The fasteners made have obvious progress. Chinese patent application number: 2003101159267 discloses a kind of anti-skid building fastener, which is formed by connecting two sub-fasteners with the same aperture through riveting, which can improve the tensile strength. The curved surface of the fastener has teeth , to play the role of anti-slip,...
Claims
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IPC IPC(8): E04G7/12F16B7/04F16L3/08
Inventor 王健
Owner JIANGYAN DAHUA MACHINERY FACTORY