Set square for teaching

Abstract

The invention relates to a set square for teaching. The set square comprises an angle square body and a holding device, scales are arranged on the upper surface of one edge of the angle square body, and rectangular placing grooves are formed in the upper surfaces of the other two edges of the angle square body. A stop piece is fixedly arranged at the opening of the upper end of each placing groove, and the length of the stop piece is smaller than the length of the placing groove. The holding device comprises a holding rod, a supporting rod, a reset spring and two connecting rods, and a grooveis formed in the lower surface of the holding rod. The supporting rod is positioned in the groove, and the two ends of the supporting rod are fixedly connected with the two side walls of the groove respectively. A lantern ring is fixedly arranged at the upper end of each connecting rod, and the outer side of the lower end of each connecting rod is vertically and fixedly connected with a hanging plate matched with the structure of the placing grooves. The two connecting rods are symmetrically arranged at the two ends of the supporting rod respectively through the lantern rings in a sleeving mode, and the reset spring is arranged at the outer part of the supporting rod in the sleeving mode and is positioned between the lantern rings on the two sides. A non-slip cushion is fixedly arranged onthe outer surface of the holding rod. The set square has the advantages of reasonable structure and convenience in use and placement.

Description

technical field [0001] The invention belongs to the field of teaching tools, and in particular relates to a teaching triangle. Background technique [0002] Triangular ruler is a kind of teaching utensil commonly used in geometry teaching, and teacher mainly uses it to draw straight line on blackboard, in order to be convenient to hold triangular ruler in teaching, existing triangular ruler is all provided with grip bar on its outer surface, but, Due to the fixed connection or integrated connection between the handle bar and the triangle body in the existing triangle ruler, it is inconvenient and easy to damage during transportation and placement, and when the existing teaching triangle ruler is placed, Most of them are hung on the wall through its hollow inner surface. When hanging in this way, the connection is unstable and easy to fall; therefore, in order to solve the above problems, a teaching triangle with reasonable structure, convenient use and placement is developed...

AI Technical Summary

Problems solved by technology

[0002] Triangular ruler is a kind of teaching utensil commonly used in geometry teaching, and teacher mainly uses it to draw straight line on blackboard, in order to be convenient to hold triangular ruler in teaching, existing triangular ruler is all provided with grip bar on its outer surface, but, Due to the fixed connection or integrated connection between the handle bar and the triangle body in the existing triangle ruler, it is inconvenient and easy to damage during transportation and placement, and when the existing teaching triangle ruler is placed, Most of them are hung on the wall through its hollow inner surface. When hanging in this way, the connection is unstable and easy to fall; therefore, in order to solve the above problems, a teaching triangle with reasonable structure, convenient use and placement is developed. ruler is necessary

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