CN202319541U

CN202319541U - Portable folding type teaching ruler

Info

Publication number: CN202319541U
Application number: CN2011204578614U
Authority: CN
Inventors: 王桥
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-18
Filing date: 2011-11-18
Publication date: 2012-07-11
Anticipated expiration: 2021-11-18

Abstract

The utility model provides a portable folding type teaching ruler, which belongs to the technical field of teaching tools. The structure of the portable folding type teaching ruler comprises a circle center supporting ruler and a circumferential supporting ruler, wherein top ends of the circle center supporting ruler and the circumferential supporting ruler are hinged with each other by a hinge shaft; length rulers are respectively marked on the bodies of the circle center supporting ruler and the circumferential supporting ruler; a circle center needle cylinder is arranged at the tail end of the circle center supporting ruler; a compression spring and a circle center needle are arranged in the circle center needle cylinder; a pen tube and a drawing pen tightening tube, which are connected with each other by a screw thread, are arranged at the tail end of the circumferential supporting ruler; and a drawing pen is arranged in the pen tube. The portable folding type teaching ruler provided by the utility model can be used for keeping and continuing the characteristics of straight rulers on the one hand and can be used for realizing the effect of compasses through two-section hinging on the other hand; the compression spring is buffered at the circle center needle so that the stability for drawing is guaranteed; the drawing pen is tightly clamped in the pen tube through tightening the drawing pen tightening tube so that convenience for drawing and multiple purposes are obtained; the drawing efficiency is effectively enhanced; and contribution is made to improving the teaching quality.

Description

Portable folding teaching chi

Technical field

The utility model relates to the teaching aid technical field, specifically a kind of portable folding teaching chi.

Background technology

General, in the teaching process aspect mathematics, the teacher often uses ruler to be figure and gives lectures and impart knowledge to students; But ruler is figure and need be used a set square and compasses writing on the blackboard on blackboard to be figure simultaneously; Its two equipment are used alternatingly quite loaded down with trivial details, and carry inconvenience, and especially the frequent exchange when being figure makes that to be figure dumb; Consume time in classroom, influence Classroom Teaching.

Summary of the invention

The technical assignment of the utility model is the deficiency that solves prior art, and a kind of portable folding teaching chi is provided.

The technical scheme of the utility model realizes by following mode, this portable folding teaching chi, and its structure comprises that chi is propped up in the center of circle and circumference props up chi; Chi and circumference are propped up in the center of circle, and to prop up the chi top hinged through hinge; The center of circle is propped up chi and circumference and is propped up and be marked with the length scale on the chi blade respectively, and the center of circle is propped up the chi end and is provided with center of circle syringe, is provided with compression spring and center of circle pin in the syringe of the center of circle; Circumference props up the chi end and is provided with the shaft of a writing brush that is threaded and the paintbrush pipe of screwing, and is provided with paintbrush in the shaft of a writing brush.

Chi is propped up in the center of circle and circumference props up the chi equal in length.

The beneficial effect that the utility model is compared with prior art produced is:

This portable folding teaching chi is to be divided into the hinged of two-part to ruler, can keep and prolong the characteristic with ruler, the hinged effect that realizes compasses of two-part on the other hand on the one hand; The buffering compression spring at pin place, the center of circle guarantees the stability when drawing, and paintbrush is screwed to manage to screw paintbrush tightly is clamped in the shaft of a writing brush, the convenient drawing; It is convenient and swift that the setting of integrated form like this can make the teacher wear teaching aid; Not in disorder, it uses more to such an extent that newly answer hand, one-object-many-purposes; Effectively improve and do figure efficient, help to improve the quality of teaching.

This portable folding teaching chi is reasonable in design, simple in structure, safe and reliable, easy to use, be easy to safeguard, has good value for applications.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is another user mode structural representations of the utility model.

Mark in the accompanying drawing is represented respectively:

1, chi is propped up in the center of circle, and 2, circumference props up chi, 3, hinge, 4, the length scale, 5, center of circle syringe, 6, the compression spring, 7, center of circle pin, 8, the shaft of a writing brush, 9, the paintbrush pipe of screwing, 10, paintbrush.

The specific embodiment

Below in conjunction with accompanying drawing the portable folding teaching chi of the utility model is done following the detailed description.

Like accompanying drawing 1, shown in 2, the portable folding of the utility model teaching chi, its structure comprises that chi 1 is propped up in the center of circle and circumference props up chi 2; Chi 1 and circumference are propped up in the center of circle, and to prop up chi 2 tops hinged through hinge 3; The center of circle is propped up chi 1 and is propped up on chi 2 blades with circumference and be marked with length scale 4 respectively, and the center of circle is propped up chi 1 end and is provided with center of circle syringe 5, is provided with compression spring 6 and center of circle pin 7 in the center of circle syringe 5; Circumference props up chi 2 ends and is provided with the shaft of a writing brush that is threaded 8 and the paintbrush pipe 9 of screwing, and is provided with paintbrush 10 in the shaft of a writing brush.The center of circle is propped up chi 1 and is propped up chi 2 equal in length with circumference.

Claims

1. portable folding teaching chi; It is characterized in that comprising that chi is propped up in the center of circle and circumference props up chi, chi and circumference are propped up in the center of circle, and to prop up the chi top hinged through hinge, and the center of circle is propped up chi and circumference and propped up and be marked with the length scale on the chi blade respectively; The center of circle is propped up the chi end and is provided with center of circle syringe; Be provided with compression spring and center of circle pin in the syringe of the center of circle, circumference props up the chi end and is provided with the shaft of a writing brush that is threaded and the paintbrush pipe of screwing, and is provided with paintbrush in the shaft of a writing brush.

2. portable folding teaching chi according to claim 1 is characterized in that chi is propped up in the center of circle and circumference props up the chi equal in length.