CN201808358U

CN201808358U - Section line drawing rule

Info

Publication number: CN201808358U
Application number: CN2010205443431U
Authority: CN
Inventors: 周雷; 刘力红
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2010-09-21
Filing date: 2010-09-21
Publication date: 2011-04-27
Anticipated expiration: 2020-09-21

Abstract

The utility model discloses a section line drawing rule, which consists of a parallelogram mechanism and an isosceles drawing square with a protractor, wherein the parallelogram mechanism consists of a group of parallel connecting rods arranged at intervals and two parallel rockers; the two rockers are connected with the connecting rods and the drawing square by pin shafts to form turning pairs respectively; the line of centers of the two turning pairs consisting of the rockers and the drawing square is parallel to the hypotenuse of the drawing square and the connecting rods; the circle center of the protractor is in the center of any turning pair; the intervals between every two adjacent connecting rods can be changed by rotating any rocker, and the group of connecting rods serves as a group of rules, so a plurality of section lines can be drawn once; the protractor is used for measuring included angles alpha between the rockers and the connecting rods; and the section lines in different inclination directions can be drawn by adjusting the included angle beta between the hypotenuse of the drawing square and a horizontal line.

Description

A kind of hatching drawing rule

Technical field

The utility model relates to a kind of drawing instrument, particularly relates to the hatching drawing tool of a kind of spacing arbitrarily and direction.

Background technology

In the mechanical drawing, the manual drawing hatching is finished by equidistant parallel mobile ruler, the low and equidistant translation of difficult assurance of its efficient.For addressing this problem, in the prior art, multiple hatching drawing tool has been proposed.

Patent CN91226093.9 has proposed a kind of hatching drawing rule plate, and it is to be the parallel elongated slot that 45 processes spacing 4.5mm on rectangular transparent plastic sheet, and the spacing of can drawing is 2,3,4,6,8 and the hatching of 12mm.Patent CN88209431.9 discloses a kind of Hatch line ruler, is made up of a ruler and a set square, and there is ratchet on two limits of ruler, and the hypotenuse of set square and a right-angle side have the sour jujube chi, can draw to become the hatching at the multiple interval at 15 ° of times of angles with horizontal line.Patent CN86208471 has proposed a kind of hatching template, can draw ± 30 °, ± 45 °, ± hatching of several densitys at 60 ° of angles.These three kinds of hatching drawing tools hatching of different spacing and direction that all can draw, more convenient.Shortcoming is that the hatching inclination angle can not regulated at will, and spacing is selected limited.

Summary of the invention

The technical problems to be solved in the utility model provides a kind of many equally spaced hatchings that not only once can accurately draw, and the drawing rule that all can arbitrarily adjust of its spacing and direction.

For solving the problems of the technologies described above, the utility model proposes following a kind of hatching drawing rule, this drawing rule is made up of parallel-crank mechanism and the isosceles drawing square that has protractor, parallel-crank mechanism by 10 parallel to each other and equally spaced connecting rod and 2 rocking bars parallel to each other form, two rocking bars connect to form rotary pair with connecting rod and set square with bearing pin respectively.The two rotary pair lines of centres that two rocking bars and set square are formed and hypotenuse and 10 connecting rods of set square are parallel to each other, and the center of any one rotary pair therein, the center of circle of protractor.10 connecting rods are equivalent to 10 rulers, thereby 10 hatchings that once can draw, rotate arbitrary rocking bar, spacing between adjacent connecting rod is changed, protractor is used to measure the angle α between rocking bar and the connecting rod, adjusts can the draw hatching of different incline directions of set square hypotenuse and angle β between the horizontal line.

The utility model adopts parallel-crank mechanism to solve the problem that hatching spacing and incline direction can not regulated at will well, compared with prior art, uses more convenient.

Description of drawings

Fig. 1 is a vertical view of the present utility model;

Fig. 2, Fig. 3 are respectively the part sectioned views of two amplifications of Fig. 1.

1-rocking bar among the figure; The 2-bearing pin; The 3-connecting rod; The 4-rocking bar; The 5-set square; The 6-protractor; The 7-bearing pin.

The specific embodiment

The utility model is made up of parallel-crank mechanism and the isosceles drawing square that has protractor.Parallel-crank mechanism by 10 parallel to each other and equally spaced connecting rod 3, two rocking bars parallel to each other 1 and 4 form.Two rocking bars are connected with bearing pin 7 with connecting rod 3 and set square 5 usefulness bearing pins 2 respectively, form rotary pair, and wherein bearing pin 2 has 20, and bearing pin 7 has 2, and the two rotary pair lines of centres that two rocking bars and set square are formed and hypotenuse and 10 connecting rods of set square are parallel to each other.When set square 5 is maintained static, rotate arbitrary rocking bar, can change the distance s=e sin α between adjacent connecting rod, in the formula, α is the angle between rocking bar and the connecting rod, can read from protractor 6, and e is the distance between adjacent bearing pin 2 centers, institute's cross-hatching spacing can be in the scope of≤e regulated at will, adjust can the draw hatching of different incline directions of set square hypotenuse and angle β between the horizontal line.The center of circle of protractor 6 is at the center of bearing pin 7.

In actual the use, with left hand set square 5 is maintained static earlier, the right hand rotates arbitrary rocking bar, to the spacing between connecting rod to correct position, just can carry out the drafting of hatching.

The utility model is not limited to 10 connecting rods, and the number of connecting rod can suitably increase and decrease as required.In addition, according to the size of drawing, the utility model can be made into multiple dimensions.

Claims

1. hatching drawing rule, form by parallel-crank mechanism and the isosceles drawing square that has protractor, it is characterized in that: described parallel-crank mechanism by one group parallel to each other and equally spaced connecting rod and two rocking bars parallel to each other form, two rocking bars connect to form rotary pair with connecting rod and set square with bearing pin respectively.

2. according to right 1 described hatching drawing rule, it is characterized in that: the two rotary pair lines of centres that described two rocking bars and set square are formed and the hypotenuse and the connecting rod of set square are parallel to each other, and the center of any one rotary pair therein, the center of circle of protractor.