CN2181411Y

CN2181411Y - Multifunctional drawing instrument

Info

Publication number: CN2181411Y
Application number: CN 94225527
Authority: CN
Inventors: 刘永信
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-01-08
Filing date: 1994-01-08
Publication date: 1994-11-02
Anticipated expiration: 2004-01-08

Abstract

The utility model relates to a multifunctional drawing instrument used for drawing a straight line, a triangle, a circle and an ellipse, which can also be used for measuring an angle. A straight flange of a protractor (9) is connected with a transverse ruler (1) of a T-square. A centerline of a vertical ruler (13) of the T-square passes through an angle line with 90 DEG of the protractor (9). An isosceles triangle (8) is composed of the left side of the protractor (9) and the vertical ruler (13). A triangle (10) having 30 DEG angle is composed of the right side of the protractor and the vertical ruler (13). The transverse ruler (1) and the vertical ruler (13) of the T-square are provided with a movable straightedge (6). The utility model is easy in use and carry, and is accurate and rapid to draw.

Description

Multifunctional drawing instrument

The utility model relates to the stationery technical field, is a kind of picture straight line, triangle, measuring angle, picture circle and oval multi-function drawing instrument of can be used to.

At present, multiduty plotter has more report, and it can form one with ruler, set square etc., and is easy to carry.But because some combination ruler structure is difficult for making, and exists some deficiency in the use, thereby even to this day, still rare multi-function drawing instrument on the stationery market.

The purpose of this utility model is, designs a kind of multi-function drawing instrument, can be used to picture straight line, triangle, measuring angle, picture circle and oval, has multiple functionally, carry, easy to use, mapping accurately, advantage rapidly.

The technical solution of the utility model is: plotter has 180 ° of protractors, the straight flange of protractor (9) links to each other with the crossfoot (1) of T-square, the center line of the perpendicular chi (13) of T-square passes 90 ° of angle lines of protractor (9), the left side of protractor (9) and perpendicular chi (13) constitute an isosceles triangle (8), the perpendicular chi (13) in protractor (9) the right constitutes the triangle (10) at 30 ° of angles, goes up the ruler (6) that an activity is installed at the crossfoot (1) and the perpendicular chi (13) of T-square.Open an elongated slot (4) on the crossfoot of T-square (1), and establish the vernier spiral shell pin (3) of a slip, the perpendicular chi (13) of T-square is gone up cutting elongated groove (14), and opens a circular hole (7) in the termination.Open an elongated slot (12) on the ruler (6), an end is opened a hole (15), adorns fixed point vernier (5), (6) of two slips on the ruler (6).

Description of drawings: accompanying drawing 1 is the utility model perspective view, and accompanying drawing 2 is planar structure schematic diagrames of the present utility model.

The contrast accompanying drawing is described further structure of the present utility model and use:

(1) is the crossfoot of T-square among the figure, offer elongated slot (4) on it, connect one 180 ° protractors (9) under the T-square, T-square crossfoot (1) down straight flange is the base of 0 ° of protractor or 180 °, the center line that T-square erects chi (13) passes (9) 90 ° of angle lines of protractor, protractor (9) left side and perpendicular chi (13) constitute an isosceles triangle (8), and protractor (9) the right and perpendicular chi (13) constitute the triangle (1) at 30 ° of angles.The vernier (3) that a slip is arranged at the elongated slot intersection of the crossfoot (1) of T-square and perpendicular chi (13), the center of vernier (3), it promptly is the fixed point in the center of circle, it promptly is the center of circle fixed point of picture circle, the initial point at the angle when also being the protractor angulation, one end of perpendicular chi (13) is established hole (7), and it and slip vernier (3) are formed compasses.Crossfoot of T-square (1) and perpendicular chi (13) are gone up equal cutting elongated groove (4) and (14), all establish the fixed point vernier (5) and (16) that slides in two grooves, its lower end is circular, ruler (6) is installed on crossfoot (1) and the perpendicular chi (13), ruler (6) is gone up cutting elongated groove (12), and an end is writeed for the first time hole (15), when the need picture is oval, ellipsograph can be formed with ruler, tee-slot in slip vernier (5) and (16).(2), (11) are scales among the figure.Illustrate use of the present utility model, draw oval: T-square crossfoot (1) is drawn a straight line, 90 ° of rotation plotters, cross the mid point of straight line, cross another straight line and perpendicular to it, crossfoot (1) and perpendicular chi (13) intersection point center with the plotter T-square, aim at venter of relicle, go up fixed point by known length semiaxis at ruler (6), screw two slip vernier (5) and (16), pen is put into the hole (15) of ruler (6), and mobile pencil (15) moves slip vernier (5) and (16) in the groove of crossfoot (1) and perpendicular chi (13), the drawn person's handwriting of pen is the semiellipse track, rotate 180 ° of plotters then, use the same method, second half that can draw oval.

The utility model can be used for various figures such as picture straight line, curve, planar graph, triangle, circle, ellipse, have the multiple functional figure of being accurately, rapidly, carry, advantage easy to use.Particularly drawing when oval can be rapidly, accurately finish.The utility model utmost point is suitable for teacher's teaching and does figure and student's use.

Claims

1, multi-function drawing instrument, it has one 180 ° protractors (9), it is characterized in that: the straight flange of protractor (9) links to each other with the crossfoot (1) of T-square, the center line of the perpendicular chi (13) of T-square passes 90 ° of angle lines of protractor (9), the left side of protractor (9) and perpendicular chi (13) constitute an isosceles triangle (8), protractor (9) the right and perpendicular chi (13) constitute the triangle (10) at 30 ° of angles, go up the ruler (6) that an activity is installed at the crossfoot (1) and the perpendicular chi (13) of T-square.

2, according to the described multi-function drawing instrument of claim 1, it is characterized in that: open an elongated slot (4) on the crossfoot of T-square (1), and establish the vernier spiral shell pin (3) of a slip, the perpendicular chi (13) of T-square is gone up cutting elongated groove (14), and opens a circular hole (7) in the termination.

3, according to claim 1 or 2 described multi-function drawing instruments, it is characterized in that: open an elongated slot (12) on the ruler (6), an end is opened a hole (15), adorn two slide fixed point verniers (5), (16) on the ruler (6).