Stairs connected through mortises and tenons

• Main Author: SHEN LINRONG
• Format: Patent
• Language: Chinese; English
• Published: 14.03.2012
• Subjects: BUILDING; FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS; FIXED CONSTRUCTIONS

Stairs connected through mortises and tenons belong to the technical field of building material products. Key technology of being connected through mortises and tenons is adopted. The stairs are formed by a stair base, stair treads and stair vertical boards. The tenons on the left side and right side in a frame body of the stair base and at two ends of a middle supporting frame are in inserting connection with mortises on inner lateral faces of supporting frame on the front side and rear side of tenons to form the stair base in a shape like a Chinese character 'ri'. The tenons on the middle supporting frame of the stair base are in inserting connection with vertical mortises in mortises which are in T shapes looked from bottoms and located under the stair treads. Horizontal mortises on the stair treads are in inserting connection with tenons at the lower end face of one stair vertical board. The horizontal mortises which are in T shapes looked from bottoms and located under the stair treads are in inserting c