CN204955852U

CN204955852U - Portable graphics primitive

Info

Publication number: CN204955852U
Application number: CN201420797731.9U
Authority: CN
Inventors: 洪茂林; 吴春富; 江国栋
Original assignee: Longyan University
Current assignee: Longyan University
Priority date: 2014-12-17
Filing date: 2014-12-17
Publication date: 2016-01-13
Anticipated expiration: 2024-12-17

Abstract

The utility model provides a portable graphics primitive, the classroom teaching of being convenient for uses, and it includes a drawing board, a square and a wide chi, and drawing board and square all adopt non -metallic material, and an iron sheet has respectively been inlayed to the mid point position of the mid point department of vertical tip of drawing board and horizontal tip and vertically and horizontally staggered's position, vertical and the horizontal mid point position of square and vertically and horizontally staggered's corresponding position respectively inlay with the drawing board on the magnetism of iron sheet looks actuation inhale the component. Utilize the fixed action of magnetism actuation principle on the part, drawing board and square all can adopt non -metallic material, in the time of weight reduction, greatly reduced manufacturing cost, simultaneously, it is convenient to utilize connection structure to make the square safeguard, the dismouting is quick, carries easily. The square that non -metallic material made uses with magnetic element's cooperation for not only can fix the drawing paper, be difficult for the drawing of making dirty moreover, the chi face of width chi has designed and has had the little figure of fretwork that mechanical drawing is commonly used, has improved drawing speed.

Description

A kind of portable drawing instrument

Technical field

The utility model relates to a kind of teaching aid, particularly a kind of portable drawing instrument.

Background technology

Presently used teaching aid for drawing, in teaching process, no matter be that teacher or student are when drawing, move on drawing board to not allow drawing paper, drawing paper is fixed on drawing board by most use drawing pin or adhesive tape, utilizes set square and T-square to complete the drafting of horizontal line and vertical line simultaneously.Traditional drawing instrument, the fixed form of drawing paper easily causes drawing breakage or leaves the gunk-squeeze process of adhesive tape, to make dirty drawing, utilizing set square and T-square to complete in the drawing process of horizontal line and vertical line also easily ruler displacement causes drawing accurate not, lack transverse and longitudinal coordinate, plotting speed is slower simultaneously.Unfixing between drawing board and ruler, be unfavorable for storage and carry.So, have people to be studied in good time, improve drawing board, the magnetic element of mutual adhesive is set between drawing board and iron square, drawing paper is fixed between square and drawing board, thus, ruler is not easily shifted, and then utilizes square to provide transverse and longitudinal coordinate, improves plotting speed.But this drawing board is not widely applied, and main cause is always, it adopts iron square and magnetic attraction element, heavier-weight, cost is higher, simultaneously, iron square gets rusty easily, easily make dirty all the better drawing, carrying of square is also very inconvenient, thus, the present inventor, in long-term teaching, carries out special linguistic term by practice for this problem.

Utility model content

The technical problems to be solved in the utility model, is to provide a kind of portable drawing instrument, can Long-Time Service and not damaging or drawing paper of making dirty, improves plotting speed, meanwhile, cheap, light dismantled and assembled, is easy to carry, easily promotes.

The technical problems to be solved in the utility model is achieved in that

A kind of portable drawing instrument, comprise one piece of drawing board, square and wide chi, drawing board and square all adopt nonmetallic materials, the midpoint of the longitudinal end of described drawing board and the point midway of lateral ends and crisscross position are respectively embedded with an iron plate, and the vertical and horizontal point midway of described square and crisscross correspondence position are respectively embedded with the magnetic attraction element with iron plate phase adhesive on drawing board.

Further, carry for the ease of folding, square is that two detachable right-angle sides combine.

Further, two right-angle sides of square are flexibly connected by a rotating shaft rotary type, wherein a cathetus edges thickness reduces make its cross section T-shaped and have fin, and another right-angle side correspondence arranges a Baltimore groove, and marginal portion can be nested against one another when closing for two described right-angle sides.

Further, in order to improve plotting speed, the chi of described wide chi has been worn mechanical drawing and has been commonly used the little figure of hollow out.

The utility model has the advantage of: owing to utilizing magnetic attracting principle fixation partially, drawing board and square all can adopt nonmetallic materials, while weight reduction, greatly reduce production cost, simultaneously, utilize syndeton to make square easy to maintenance, dismounting is quick, easily carries.The square that nonmetallic materials are made and magnetic element with the use of, make to fix drawing paper, and drawing of not easily making dirty, the chi face of wide chi devises with the conventional little figure of hollow out of mechanical drawing, improves plotting speed.The utility model is easy to use, Simple portable, and in daily teaching, practicality is stronger.

Accompanying drawing explanation

The utility model is further described with reference to the accompanying drawings in conjunction with the embodiments.

Fig. 1 is three-dimensional exploded view of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to sectional view;

Fig. 3 is that the B-B of Fig. 1 is to sectional view;

Fig. 4 is use schematic diagram one of the present utility model;

Fig. 5 is use schematic diagram two of the present utility model.

Detailed description of the invention

The utility model provides a kind of portable mapping tool, and it comprises: one piece of drawing board 1, square 2 and wide chi 3, as shown in Figures 1 to 5:

Drawing board 1: the midpoint of the longitudinal end of drawing board and the point midway of lateral ends and crisscross position are respectively embedded with an iron plate 11;

Square 2: the vertical and horizontal point midway of square and crisscross position are respectively embedded with the magnetic attraction element 21 attracting with magnetic element on drawing board; Carry for the ease of folding, square is that two detachable right-angle sides combine, two right-angle sides of square are flexibly connected by rotating shaft 22 rotary type, wherein a cathetus edges thickness reduces make its cross section T-shaped and have fin 23, another right-angle side correspondence arranges a Baltimore groove 24, and marginal portion can be nested against one another when closing for two described right-angle sides.

Wide chi 3: the chi of wide chi 3 has been worn mechanical drawing and commonly used the little figure 31 of hollow out.

Based on above device, operating process of the present utility model is:

Drawing paper is laid on drawing board, utilizes square along the end winding support of drawing board on drawing board, can drawing paper be fixed.When drawing protract is good, remove square, take off drawing, square is split, keeps well, or square is folded close up.

Shown in Fig. 4 be wide chi 3 move up and down with square 2 with the use of, shown in Fig. 5 be wide chi 3 move left and right with square 2 with the use of.

Although the foregoing describe detailed description of the invention of the present utility model; but be familiar with those skilled in the art to be to be understood that; specific embodiment described by us is illustrative; instead of for the restriction to scope of the present utility model; those of ordinary skill in the art, in the modification of the equivalence done according to spirit of the present utility model and change, should be encompassed in scope that claim of the present utility model protects.

Claims

1. a portable drawing instrument, comprise one piece of drawing board, square and wide chi, it is characterized in that: drawing board and square all adopt nonmetallic materials, the midpoint of the longitudinal end of described drawing board and the point midway of lateral ends and crisscross position are respectively embedded with an iron plate, and the vertical and horizontal point midway of described square and crisscross correspondence position are respectively embedded with the magnetic attraction element with iron plate phase adhesive on drawing board.

2. a kind of portable drawing instrument as claimed in claim 1, is characterized in that: square is that two detachable right-angle sides combine.

3. a kind of portable drawing instrument as claimed in claim 2, it is characterized in that: two right-angle sides of square are flexibly connected by a rotating shaft rotary type, wherein a cathetus edges thickness reduces make its cross section T-shaped and have fin, another right-angle side correspondence arranges a Baltimore groove, and marginal portion can be nested against one another when closing for two described right-angle sides.

4. a kind of portable drawing instrument as claimed in claim 1, is characterized in that: the chi of described wide chi has been worn mechanical drawing and commonly used the little figure of hollow out.