CN2700989Y

CN2700989Y - Three-views teaching aid

Info

Publication number: CN2700989Y
Application number: CN 200320129682
Authority: CN
Inventors: 张自辉; 张自唐
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-26
Filing date: 2003-12-26
Publication date: 2005-05-18
Anticipated expiration: 2013-12-26

Abstract

The utility model relates to a teaching aid, which is a three-view teaching aid in middle schools. The utility model adopts a square plastic thin sheet or a white paper board with certain thickness, and the square plastic thin sheet or the white paper board is halved to be an upper small square, a lower small square, a left small square and a right small square which are equal according to mid-points of each edge. The right lower small square is removed, and the other three small squares are folded along halving lines. Three surfaces are vertically lifted to form a space in which the three surfaces are mutually vertical. Then, the structure can be used for explaining and demonstrating the three-view principle. The utility model has the advantages of low materials, easy manufacture and convenient operation. In addition, the utility model can be easily accepted by teachers and students.

Description

A kind of three-view diagram teaching aid

Technical field

The utility model relates to a kind of teaching aid, the apparatus of particularly a kind of middle school three-view diagram teaching.

Background technology

The content of courses of middle school three-view diagram is the basic course of drawing such as machinery and engineering.Though it is simple to begin to learn content, drawn figure all is to set about from the solid geometry entity that the student knows, concerning middle school student, especially to the junior school student, show geometry entity, on blackboard, draw then only according to the teacher, the student is the drawn figure of understanding from the imagination, truly have certain difficulty.School with good conditionsi projector is about to be drawn object and places in the projecting rack, divides three faces to open optical projection, and three-view diagram promptly shows.So really, can reflect three-view diagram drawing principle preferably.But because this instrument price is not low, general school is difficult to be equipped with, and is school with good conditionsi again and promptly, and the teacher installs on the classroom, debugs, uses, and removes vanning with finishing, and take valuable time in classroom.For another example, student's exercise of doing one's assignment after class, just rare help to this instrument.

The utility model can overcome above-mentioned deficiency, provides a kind of cost of manufacture cheap, and teachers and students are easy to use, can reflect the apparatus of three-view diagram teaching intuitively.

The purpose of this utility model is to realize like this, certain thickness square white board or plastic tab have been taken, by naming a person for a particular job it in each limit to being divided into four the equal little squares in upper and lower, left and right, removing the little square in lower right need not, with other three little squares along to the separated time doubling, vertically hold up three mutually perpendicular spaces of formation then, be the three-view diagram space.During the explanation example, relevant position on three little facings earlier, draw the three-view diagram of certain object respectively, then this three face is holded up, constitute mutually perpendicular solid space, put the entity article of this three-view diagram again in corresponding position, this space, so just can reflect the three-view diagram principle intuitively.When doing exercise as the student, can earlier three mutually perpendicular solid spaces of square formation of blank be drawn thing to quilt and place this solid space, the student looks from three sights, draw on three little facings along this thing profile with pen, remove then and drawn entity, shakeout three little facings, will draw line and fill out that the painter is whole promptly to finish the three-view diagram mapping.

The utility model is made simple and easyly owing to draw materials cheaply, and easy to operate being easy to accepted by numerous teachers and students; Can become the stereo structure demonstration because the utility model is amounted to again, launch to become flat state again, not only be convenient to the use of learning aid, also be convenient to deposit simultaneously; Both can on print on the facing, demonstrate as example by three-view diagram, also can be made into blank face for the students' work exercise; Again and the student take action on one's own, be easy to excite student's learning interest, just easily learn easily note, thereby reduce the difficulty of learning aid, raise the efficiency.

Description of drawings

Concrete structure of the present utility model is provided by the following drawings and embodiment:

Fig. 1 is flat state figure of the present utility model;

Fig. 2 is stereoscopic-state figure of the present utility model;

Fig. 3 is the audio-visual picture of the utility model three-view diagram.

Embodiment

Below in conjunction with accompanying drawing, its operating position is described.

In conjunction with Fig. 1, the utility model comprises, square sheets (P) along (1M), (2M) is divided into four little squares (A), (B), (C), (D); On (D), cut out dash area (Q) stay ligule part (1S); Open and the osculum (1K) that (1S) adapts on the crosslinked line (2M) at (B) and (D); Make a little ligule (2S) in the lower left corner of (P), open in (P) lower right corner and (2S) osculum of corresponding size (2K), so be basic structure of the present utility model.Demonstration is during three-view diagram, then on three of (A), (B), (C), draws front elevation (1) respectively, left view (3), and vertical view (2), this is the flat state of three-view diagram.

(A), (B), (2M) doubling of (C) three edges (1M), make it vertical connection in conjunction with Fig. 1,2, hand in order to ensure three stable hanging down, then (1S), (2S) are inserted (1K), (2K) respectively, in the socket, this is the stereoscopic-state of three-view diagram.

In conjunction with Fig. 3, will look picture object (4), place on the corresponding position of solid space of above-mentioned formation, promptly reflect the drawing principle of three-view diagram intuitively.

Claims

1, a kind of middle school three-view diagram teaching aid, it comprises the square plastic thin slice or the white board (P) that not only can print but also can write, picture as three-view diagram, it is characterized in that: with each middle part, limit edge (1M), (2M) doubling of square (P), be divided into four little squares (A), (B), (C), (D), left and right inferior horn at (P) is shaped on tab (2S) and little oral pore (2K) respectively, the edge that abuts (C) on (D) is shaped on tab (1S), is shaped on little oral pore (1K) at (D) with (B) joint.

2, according to claim 1, described three-view diagram teaching aid, it is characterized in that: when being converted into the orthogonal state of three of (A), (B), (C) along (1M), (2M), (D) coincide with the back side of (C), and (1S), (2S) just in time insert among (1K), (2K) respectively.