CN202563757U

CN202563757U - Triangle interior angle sum demonstrator

Info

Publication number: CN202563757U
Application number: CN2012201016728U
Authority: CN
Inventors: 纪博夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-15
Filing date: 2012-03-15
Publication date: 2012-11-28
Anticipated expiration: 2022-03-15

Abstract

The utility model provides a triangle interior angle sum demonstrator with simple structure and convenient operation, falling into the teaching aid technical field. The utility model comprises a circular ring and a triangular iron frame, wherein the triangular iron frame is made up of a first section, a second section and a third section; the joint of the first and second sections, the joint of the first and third sections and the joint of the second and third sections are at mid-positions of the three sides of the triangular iron frame; and the first, second and third sections are fitted over the circular ring through small iron rings.

Description

The angle sum of a triangle demonstration device

Technical field

The utility model is divided by International Patent Classification (IPC) (IPC) and is belonged to physical piece, education; Cryptology; Show; Advertisement; Big type of seal, education or demonstration equipment; Be used to the apparatus of imparting knowledge to students or communicating by letter with blind person, deaf person or mute; Model; Planetarium; Terrestrial globe; Map; The figure watch group, the model that science, medical science or mathematics are used, the device technique field that for example is used to demonstrate with full-size(d), more specifically saying so relates to a kind of magnetic levitation education demonstrator.

Background technology

Teaching aid is that teaching the time is used for the model, material object, chart, magic lantern etc. of explaining illustration something or other.

Teaching aid is to propagate the material object of science and technology, the artificial purpose of education, is scientific and technological completely medium, is indispensable equipment in teenager's scientific and technological activities.Teaching aid has object visual, duplicate teaching aid etc., specifically has from natural sample or sample: as be used for biological sample, mineral sample, fossil, rock and the rare animal sample etc. of education of science and technology activity.The Counterfeit Item and the model that also have sample, like the used model of mannikin, boat, sea, Che Sanmo etc., teaching aid can also be divided into demonstration with and the practice operation with two kinds.

Teaching aid is for the carrying out of teaching, and especially natural science applied teaching has important meaning; According to the requirement of " compulsory education standard course experiment textbook ", what need that the teaching aid of good demonstration effect helps impart knowledge to students carries out.

In plane geometry, the angle sum of a triangle theorem is arranged: an Atria interior angle with equal 180 °; In first this content of contact, the student can't prove this, therefore need show this conclusion through lecture experiment.

Summary of the invention

The utility model is exactly to the problems referred to above, and a kind of angle sum of a triangle demonstration device simple in structure, easy to use is provided.

In order to realize the above-mentioned purpose of the utility model; The utility model adopts following technical scheme; The utility model comprises annulus and triangle chase; Its structural feature triangle chase is made up of first segmentation, second segmentation and the 3rd segmentation; And the joint of the joint of first segmentation and second segmentation, first segmentation and the 3rd segmentation, second segmentation and the 3rd segmentation joint are respectively the midpoint on three limits of triangle chase, and first segmentation, second segmentation and the 3rd segmentation all are enclosed within on the annulus through little iron hoop.

Annulus adopts iron wire to process.

The beneficial effect of the utility model:

(1) simple in structure

The utility model is made up of tripartite triangle chase and annulus, and the triangle chase is enclosed within on the annulus through little iron hoop, does not use too much member, and is therefore simple in structure.

(2) easy to use

During use, keeping a part of motionless in the triangle chase, move two other part, is that they are slided on annulus, and last three angles lump together, can observe three angles and be 180 °.

Description of drawings

Fig. 1 is the structural representation of the utility model.

In the accompanying drawing, 1 first segmentation, 2 is annulus, and 3 is second segmentation, and 4 is little iron hoop, and 5 is the 3rd segmentation.

Embodiment

Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

The utility model comprises annulus 2 and triangle chase; The triangle chase is made up of first segmentation 1, second segmentation 3 and the 3rd segmentation 5; And the joint of the joint of first segmentation 1 and second segmentation 3, first segmentation 1 and the 3rd segmentation 5, second segmentation 3 and the 3rd segmentation 5 joints are respectively the midpoint on three limits of triangle chase, and first segmentation 1, second segmentation 3 and the 3rd segmentation 5 all are enclosed within on the annulus 2 through little iron hoop 4.

Annulus 2 adopts iron wire to process.

Be with being appreciated that; More than about the specific descriptions of the utility model; Only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment; Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect; As long as satisfy the use needs, all within the protection domain of the utility model.

Claims

1. angle sum of a triangle demonstration device; Comprise annulus (2) and triangle chase; It is characterized in that the triangle chase is made up of first segmentation (1), second segmentation (3) and the 3rd segmentation (5); And the joint of the joint of first segmentation (1) and second segmentation (3), first segmentation (1) and the 3rd segmentation (5), second segmentation (3) and the 3rd segmentation (5) joint are respectively the midpoint on three limits of triangle chase, and first segmentation (1), second segmentation (3) and the 3rd segmentation (5) all are enclosed within on the annulus (2) through little iron hoop (4).

2. angle sum of a triangle demonstration device according to claim 1 is characterized in that annulus (2) adopts iron wire to process.