CN201143850Y

CN201143850Y - Multifunctional folding ruler

Info

Publication number: CN201143850Y
Application number: CNU2007201830452U
Authority: CN
Inventors: 马璇
Original assignee: Xingtai Polytechnic College
Current assignee: Xingtai Polytechnic College
Priority date: 2007-10-25
Filing date: 2007-10-25
Publication date: 2008-11-05
Anticipated expiration: 2017-10-25

Abstract

A multi-functional folding ruler which has simple structure and is convenient to be operated is provided with four bars which are connected by hinges; the bars are provided with equal side length. Protractors are adhered to and guide grooves are dug on the bars; sliders with holes are arranged in the grooves, so a circle can be drawn. Line segments and angles are bisected according to the geometrical properties of a diamond and the motility of the hinges, as the parallel lines of a known straight line. The multi-functional folding ruler can be provided with the functions of a ruler, a pair of compasses, a protractor and a beam divider, and has the advantages of high drawing speed, convenience, accuracy, wide scope of application, simple structure and convenience in carrying.

Description

The Foldable multifunctional chi

Affiliated technical field

The utility model relates to a kind of mechanical transmission mechanism and is used for study, design, draws, imparts knowledge to students as drawing tools.

Background technology

The various drawing instruments that use have unicity, complexity at present.Angular bisector such as the perpendicular bisector of doing line segment, angle will be used compasses and ruler, and doing known PAR will measure length along path and will use divider with two set squares.With instrument many and mapping is complicated, error is big.

Summary of the invention

In order to simplify mapping, improve the accuracy of mapping, reduce number of tools, the utility model provides a kind of Foldable multifunctional chi, and this Foldable multifunctional chi not only volume is little, in light weight, easy to carry, and uses simple, interesting.

The technical scheme that its technical problem that solves the utility model adopts is: the shape of Foldable multifunctional chi is an equilateral quadrangle, and four limits couple together with hinge, and each limit is referred to as a bar.Bar is made the shape of ruler, and scale is arranged.The material of bar can be plastics, wooden, steel, selects different materials and size according to the field difference of using.The Foldable multifunctional chi of student and design specialized can be used plastics, and size is little, and is in light weight; The teaching usefulness available wooden, large-sized; Available steel on the engineering.The Foldable multifunctional chi can be made different size, as 10 centimetres, 15 centimetres, 30 centimetres, 45 centimetres length of side different models, to be applicable to different requirements.Homonymy at each hinge is placed draw point, must guarantee that the distance between per two adjacent draw points equates, makes mapping accurately.Make the groove of a fixed length in the middle part of a bar, porose slide block in the middle of placing in the groove, be connected with slide plate between slide block and the bar, locate with a lock-screw between slide plate and the bar, in the hole of slide block, insert pencil or chalk, unclamp screw, slide block is slided into the scale of the needs of bar chi, hold-down screw, the circle of the certain size that just can draw.At protractor of fixed-site of the hinge of a bar chi, just can draw arbitrarily angled.

Because four limits connect with hinge, four limits can be out of shape, and four limits are equilateral, no matter are deformed to any position, the Foldable multifunctional chi all is a rhombus or straight line, and its function is as follows: (1) utilizes the orthogonal perpendicular bisector that can make any one line segment of dividing equally of the diagonal of rhombus; (2) angle point is placed on two end points of line segment to two of rhombus, then two other line to angle point is exactly its perpendicular bisector; (3) utilize the diagonal of rhombus to divide the angle of its two adjacent bars equally, make a hinge be positioned at the summit of a known angle, two bars of hinge are placed on two limits of this known angle, and then the diagonal angle hinge on summit is exactly the point on the angular bisector; (4) utilize the parallel character of the opposite side of rhombus can do any one known PAR; (6) utilize the changeability of the distance of two pairs of angle points, can measure the length of line segment; (7) can the draw circle of certain size; (8) drafting is arbitrarily angled.

The beneficial effects of the utility model are, can have the function of ruler, compasses, protractor, divider simultaneously, and mapping speed is fast, and are convenient, and accurately, application is wide.Collapsible, volume is little, and is in light weight, is easy to carry.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is a fundamental diagram.

Fig. 2, Fig. 3, Fig. 4 are function declaration figure.

Fig. 5 is the structural design key diagram.

1. bar chis among the figure, 2. bar chi, 3. bar chi, 4. bar chi, 5. hinge, 6. hinge, 7. hinge, 8. hinge, 9. diagonal, 10. diagonal, 11. straight lines, 12. straight lines, 13. band slide plate slide blocks, 14. screws, 15. protractors.

The specific embodiment

Fig. 1 is with hinged four bar chis, and the hinge centre distance of four bar chis is equal, is rhombus.The hinge through freedom.This is the principle and the basis of design.Fig. 2 king-rod chi (1,2,3,4) connects with hinge (5,6,7,8), diagonal (9,10) orthogonal dividing equally.Line (9) is the angular bisector at the angle of bar chi (1), bar chi (2) composition.Line (10) is the angular bisector at the angle of bar chi (3), bar chi (4) composition.Utilize the variation of hinge, can be any angle bisection, as long as barre chi (1), bar chi (2) are placed on the both sides at angle, the summit is placed on hinge (5) point, connects hinge (5), hinge (7) can be divided the angle equally.Fig. 3 can make the parallel lines straight line (12) of known straight line (11).Fig. 4 can be measured line segment with two hinges.Fig. 5 is a structural design drawing, bar chi (1), bar chi (2) make the band rule, can measure length, bar chi (3) makes the rule of trough of belt, and band slide plate slide block (13) is arranged in the groove, and sliding slider (13) is to the scale that needs, hold-down screw (14), insert chalk or pencil, fixed hinge (6) or hinge (7) can be drawn circle or circular arc; Bar chi (4) makes the bar chi of the masterplate of band circle, and it is 1,2,3,4,5,6,7,8 millimeter circle that diameter is arranged on the bar chi (4), can make template.Protractor (15) is fixing with bar chi (2), but measuring angle.

Claims

1. a Foldable multifunctional chi is combined by ruler, protractor, it is characterized in that: wait quadrangle bar chi, each bar chi is formed by connecting with hinge, and there is draw point the position of hinge, and scale, guide groove, masterplate are arranged on the bar chi.

2. Foldable multifunctional chi according to claim 1 is characterized in that: the hinge central point at a bar chi has a protractor, and guide groove, slide block, slide plate, screw with holes are arranged on another bar chi.