Wooden staircase of modular construction

Abstract

This invention with uses in in the duplicate building or the villa staircase related, for new assembly type structure lignin staircase. Its Liang Ban with treads boardwalk and in the vertical bar contact face supposes several screw aperture, depth of hole is smaller than the screw total length; Treads boardwalk in the bottom surface and the vertical bar internal surface supposes several cross sections to become the step-shaped scoop channel, in the scoop channel riser the heterogeneous type passes the trough the fitting, passes the trough the geometry size with to install screw head and the endless screw diameter matches on the Liang board, the scoop channel shape and the size and the connection the fitting external dimensions match with this scoop channel in, the scoop channel depth and the Liang board screw aperture sum of the depth is bigger than is equal to the screw total length. This invention originally the structure which will contact for the lignin material and the metal screw transforms into by material and the metal screw contact structures and so on metal, has avoided the staircase pan damage; Simultaneously middle the fitting may circle its periphery wilfully to revolve, when assembly building footboard its angle may wilfully adjust, assembly nimble, the work efficiency is high. Staircase whole artistic natural, varnishes the effect to be specially good.

Description

technical field

[0001] The invention relates to stairs used in civil building decoration projects such as duplex buildings or villas, and relates to an assembly structure of stairs, in particular to an assembled wooden staircase. Background technique

[0002] In the prior art, the assembly structure of the wooden staircase generally has the following forms: one is to connect and fix the tread plate, vertical plate and beam plate of the staircase with iron nails respectively. Obviously, the countless nail heads left on the surface of the stairs assembled in this way make the surface of the stairs uneven, which is not beautiful, but also affects the effect of painting, and the nail heads will rust after a long time; It is a method of drilling, screwing and capping. Compared with the iron nail connection method, this method has improved the flatness of its surface, but the construction is time-consuming and laborious, and the work efficiency is low. Once the cover added at the...

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