CN2355894Y

CN2355894Y - Multifunctional tool rule for measuring and drawing

Info

Publication number: CN2355894Y
Application number: CN 99204424
Authority: CN
Inventors: 胡海波
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-06
Filing date: 1999-03-06
Publication date: 1999-12-29
Anticipated expiration: 2009-03-06

Abstract

The utility model relates to a multifunctional tool rule for measuring and drawing. The applied slide groove function and the triangular cosine theorem cause that each component in the mutual combination is directly provided with multiple functions. Centering cylinders on a ruler rod and an angle rod all adopt a fan-shaped decount with 90 DEG, so that two rulers can carry out the accurate centering in mapping after the rotation. The utility model has the advantages of the precise, simple, and composite measurement for the points of the length, angle, parallel line, vertical line, circular arc, and coordinate, and painting function. The multifunctional tool rule for measuring and drawing can carry out the corresponding reading number for each ruler in the triangular combination to approximately find out the value of the often used trigonometric function. The utility model has the advantages of durable structure, complete function, convenient and portability and storage, and lower cost, and the multifunctional tool rule for measuring and drawing can be widely used for drawing and tabulation in various industries.

Description

A kind of multi-functional measurement draw tool chi

The utility model relates to manual the drawing and use instrument.

At present, the drawing rule of being popularized generally all has only simple function, do not have independently accurately to survey and draw the specific purpose tool of parallel lines or coordinate points quickly yet, when mechanical graphics figure, circuit diagram, engineering drawing, geometric graph, coordinate system and tabulation, all need adopt multiple chi tool collocation to use, waste time and energy, carry and place also very inconvenient, and instrument is many, often cause that drawing error strengthens, influence the attractive in appearance and accuracy of chart, also do not have a kind of instrument on the present market, required every function in the time of having conventional the drawing simultaneously.

The purpose of this utility model just provides a kind of conventional func that combines multiple drawing rule tools such as ruler, set square, compasses, protractor, have the accurately auxilliary quickly and easily peculiar functions such as line, vertical line, coordinate points at ordinary times of painting simultaneously, also have the correction tip of a pencil, comprise simple in structure durable, the portative drawing appliance of using miscellaneous functions such as trigonometric function value always.

The purpose of this utility model is achieved in that this instrument has basic chi, slide rule, bar chi, four critical pieces of angle rod as figure; Wherein basic chi in use can with overall separation, the centering syringe needle can be installed in its base, and one or more slide block nibs can be installed in the internal chute, utilizes the rotation lever, is rotated, circular arc or intercepting line segment promptly can be used for painting; Length value at quarter on the base chi, the vertical range of two parallel lines when being used to survey and draw straightway and showing the mapping parallel lines; In addition, also design has a disconnectable fine sandpaper on basic chi, is used to revise tip of a pencil; Slide rule moves along the main chute on the basic chi is parallel, and the depending post chi carries out the mapping of the parallel lines and the coordinate mooring points of various angles, and the bar chi divides upper and lower two-layer, be carved with angle and length scale respectively, it is the center of circle to scheme the going up a point, and energy horizontally rotates for 90 °, is combined into one with degree of tightness nut and slide rule; The length scale is arranged on the angle rod, to scheme the going up b point is the center of circle, can carry out 180 ° horizontally rotates, carry out angular surveying (its top C order the bar chi upper angle value of being touched promptly be to be the angle value of two supplementary angles on summit with the b point on the figure) simultaneously, because its angular surveying principle adopts the triangle cosine law, therefore three basic limits and three angles all are known, and the application length of slide rule and angle rod is isometric in design, so, can be similar to and obtain trigonometric function value commonly used according to the triangle theorem.

Owing to adopt such scheme, can be implemented in the whole application functions that have chi tools such as ruler, compasses, protractor, set square on the better simply drawing instrument of a kind of structure simultaneously, and also have as revising the miscellaneous function that tip of a pencil comprises trigonometric function approximation commonly used etc., made things convenient for harvesting to carry and use, also avoided the trouble brought because of instrument is scattered, and make draw a diagram more accurate and quick.

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1. the utility model front is looked

Fig. 2. left cutaway view of the present utility model

Fig. 3. basic chi left view in the utility model

Fig. 4. the utility model king-rod chi right view

Contour of object after dotted line is represented to have an X-rayed on the figure

Among the figure: 1. the angle value facet on the length value facet 15. double-deck bar chis on the gateway 14. double-deck bar chis when main chute position on the basic chi 2. slide rules 3. double-deck bar chi 4. angle rods 5. degree of tightness nuts 6. basic chis 7. is revised internal chute 13. fine sandpapers on the groove 12. basic chis that the lever 11. that has anti-skidding line when slide block 9. screwed centering that fine sandpaper 8. that tip of a pencils use has nib are rotated with syringe needle 10. basic chis is used to receive and keep angle rod and changed

Be used in reference to the point of rod chi angle value on the center c. angle rod when center b. angle rod when a. the bar chi rotates rotates

Two true edges when two true edge B. when A. measuring acute angle measure the obtuse angle

Below be to realize mode of the present utility model: this apparatus is by basic chi (Fig. 1-1) as shown, slide rule (Fig. 1-2), double-deck bar chi (Fig. 1-3, Fig. 4), angle rod (Fig. 1-4), degree of tightness nut (Fig. 1-5), fine sandpaper (Fig. 1-7), slide block nib (Fig. 1-8), centering needle point (Fig. 1-9), rotation lever parts such as (Fig. 1-10) are formed, wherein the locations of structures of each main scale and reference graduation position are as shown in Figure 1, wherein angle rod (Fig. 1-4) can be rotated in the harvesting groove (Fig. 1-11) on the slide rule, with convenient whole carrying and receive and keep, a on the figure, 2 of b are respectively the centering point of bar chi (Fig. 1-3) and angle rod (Fig. 1-4), be with degree of tightness nut (Fig. 1-5) in the centering cylinder of circle carry out 90 ° of fan-shaped lack and obtain after removing, to improve two chis in postrotational mapping accuracy, centering needle point (Fig. 1-9) axis should with the rotation lever (Fig. 1-10) dead in line, with screw thread and basic chi combination, so that carry out the trace adjustment of needle point extension elongation, improve the value accuracy of picture circle, base chi internal chute (Fig. 1-10) should be furnished with a plurality of slide block nibs (Fig. 1-8), use with convenient, fine sandpaper (Fig. 1-7) design is in the framework that basic ulnar side, and design has a gateway (Fig. 1-13), with convenient periodic replacement.

Claims

The utility model is a kind of multi-functional measurement draw tool chi, it is characterized in that:

(1), use the chute function and the triangle cosine law, basic chi, bar chi, slide rule, angle rod made up mutually and directly have simple and accurate measurement painting function line segment, angle, parallel lines, vertical line, circular arc, coordinate mooring points;
(2), in claim the first on the mentioned basic chi, design has a fine sandpaper that can change, and is convenient to the correction to various tip of a pencils, to adapt in the drawing the different demands to tip of a pencil.