CN2265303Y - Multi-purpose drawing instrument - Google Patents

Abstract

The utility model relates to a drawing tool, which is characterized in that a multi-purpose drawing instrument is connected to integration by a left ruler body which is integrally composed of an angulometer, a left ruler and a left compass foot and a right ruler body which is integrally connected by an upper part circular arc, a right compass leg and a right ruler through a compass shaft. The left and the right compass legs are respectively arranged at the longitudinally middle positions of the upper part of the left and the right rulers, and the lower ends of the two compass legs are respectively extended out of the lower ends of the left and the right rulers. The angulometer arranged at the upper end part of the left ruler and the circular arc arranged at the upper end part of the right ruler are all extended inwards, and the extended sections mutually coincide, and are connected with the center of a circle through the compass shaft. The inner sides of the two rulers are equal, and the bottom are positioned in the same horizontal plane. The multi-purpose drawing instrument has the functions of the ruler, the compasses, and an angle measuring ruler, and has the advantages of simple structure and convenient carryover. The utility model is suitable for use by teachers and students.

Description

Multi-purpose drafting tool

The utility model relates to a kind of drawing instrument.

At present ruler, compasses, bevel protractor etc. are arranged all is the single special-purpose drawing instrument of function of use to the drawing instrument used on the blackboard in teaching with drawing instrument and teacher of student, each instrument to rotate access times frequent, influence mapping speed, and number of packages carries inconvenience more.

The purpose of this utility model is, provide a kind of ruler, compasses, angle square Trinitarian, can improve mapping speed, use, multi-purpose drafting tool easy to carry.

The technical solution of the utility model is: be the left ruler body of one and be the right ruler body of one by top circular arc, right rule pin and right ruler by angulometer, left ruler, left side rule pin, fuse by the rule axle.Placing the angulometer of left ruler body upper end is recessed semicircle, and scale is arranged on it, and it is concordant with the right of left ruler that its flat limit is with its longitudinal centre line that benchmark stretches out to the right; Front, right ruler body upper end is protruding upward, 90 ° the circular arc that the bottom is recessed, the left side of circular arc is that benchmark stretches out left and overlaps with top, the right section of stretching out of right ruler with the left side of its right chi, in the bottom of its coincidence place is the center of circle of angulometer and circular arc, its inner side edge was concordant when two chis closed up, and the bottom is in the same horizontal plane.Left side rule pin vertically places the top middle part of left ruler or the top of keeping right.Right rule pin places above the right ruler and vertically hits exactly, and the protuberance of its upper end and top circular arc fuses.The shape of cross section of two rule pin and ruler linkage section is circular arc or the middle high triangle that tilts to both sides protruding upward, and two rule underfooting ends stretch out the lower end at two chis respectively.The lower end of stretching out the ruler section at the rule pin is provided with clamping rule pin geometrical clamp, and the lower end that right rule pin stretches out the ruler section is provided with active joint or the chalk clamper active joint that is used for connecting rod.

The breach of the angle read is arranged the top of the section of stretching out left at the circular arc of right ruler body upper end, flat limit, the left side of breach is parallel with the inner side edge of right ruler.The position of left ruler body and right ruler body arbitrarily changes.

Excellent beneficial effect of the present utility model is, owing to possessed the function of multiple drawing instruments such as compasses, ruler, angulometer, therefore reduced the number of packages of single-piece drawing instrument, improved plotting speed, portably use conveniently, also, can make two chis close up into a long chi, with the longer straight line of drawing a picture with a ruler Rotate 180 °.The utility model be suitable for the student with and teacher's usefulness on blackboard, both just have any different on size dimension and lead gripper pen core or chalk and extension bar, and the structure of this part can adapt to prior art, simple in structure, cost is low.

Fig. 1 is a structural representation of the present utility model.Fig. 2 is an A-A profile among Fig. 1.Fig. 3 is the end surface shape figure of multi-purpose drafting tool rule pin and the another kind of scheme of ruler part.Fig. 4 be among Fig. 1 B to view.Shape schematic diagram when Fig. 5 rotates an acute angle for plotter.Fig. 6 is the shape schematic diagram when making plotter be rotated into a ruler.

Below in conjunction with description of drawings embodiment of the present utility model:

Multi-purpose drafting tool comprise angulometer 3, left ruler 4, left side rule pin 5, right ruler 9, right rule pin 10, compasses 1, rule axle 7, fuse by advising spools 7 for the right ruler body of one for the left ruler body of one with by top circular arc 6, right rule pin 10 and right ruler 9 by angulometer 3, left ruler 4, left side rule pin 5.Place the angulometer 3 of left ruler body upper end to be recessed semicircle, scale is arranged on it, its flat limit is that benchmark stretches out the right with left ruler to the right along concordant with its longitudinal centre line; Front, right ruler body upper end is protruding upward, 90 ° the circular arc that the bottom is recessed, the left side of circular arc with the left side of its right ruler be benchmark stretch out left and with the top, the right of left ruler left the section of stretching out overlap, in the bottom of its coincidence place is the center of circle of angulometer 3 and right circular arc 6, and the thickness of right ruler body circle centre position is thicker slightly than blade.By a sleeve (figure part omitted) rule axle 7 is housed in the center of circle, its inner side edge was concordant when left ruler 4 closed up with right ruler 9, and the bottom is in the same horizontal plane.Left side rule pin 5 vertically places the top middle part of left ruler 4 or the top of keeping right.Right rule pin 10 places top vertical center of right ruler 9, the protuberance of its upper end and top circular arc 6 fuses, right ruler body inner top side face centre bit is equipped with a screw, compasses are housed 1 in the hole, left side rule pin 5 and right rule pin 10 are circular arc or the middle high triangle that tilts to both sides protruding upward with the shape of cross section of left ruler 4 and right ruler 9 linkage sections respectively, the lower end of two rule pin is stretched out the lower end at left ruler 4 and right ruler 9 respectively, the section of stretching out is thinner than its upper end, so that be connected with connecting rod, rule pin geometrical clamp is arranged in the lower end of left side rule pin 5, and the lower end of right rule pin 10 is provided with the active joint that is used for fixing connecting rod or the active joint (figure part omitted) of chalk clamper.The circular arc of right ruler body upper end left the top left of the section of stretching out the breach 2 of the angle read is arranged, flat limit, the left side of breach 2 is parallel with the inner side edge of right ruler 9, only all is reflected between left ruler 4 and the right ruler 9 at the scale of reading on the angulometer 3 when therefore rotating right ruler body.

Its weak point is because two chis are overlapping, along with the increase of work angle, can only draw extended line when needing to determine its drift angle and finish.

Claims (4)

1, multi-purpose drafting tool comprises angulometer (3), left side ruler (4), left side rule pin (5), right ruler (9), right rule pin (10), compasses are (1), rule axles (7), the lower end that left side rule pin stretches out the ruler section is provided with clamping rule pin geometrical clamp, the lower end that right rule pin stretches out the ruler section is provided with active joint or the chalk clamper joint that is used for connecting rod, it is characterized in that by angulometer (3), left side ruler (4), left side rule pin (5) are the left ruler body of one and by top circular arc (6), right rule pin (10) and right ruler (9) fuse by rule axles (7) for the right ruler body of one, place the angulometer (3) of left ruler body upper end to be recessed semicircle, scale is arranged on it, and its flat limit is that benchmark stretches out the right with left ruler to the right along concordant with its longitudinal centre line; Front, right ruler body upper end is 90 ° a circular arc protruding upward, that the bottom is recessed, the left side of circular arc with the left side of its right ruler be benchmark stretch out left and with the top, the right of angulometer (3) to the right the section of stretching out overlap, in the bottom of its coincidence place is the center of circle of angulometer (3) and right circular arc (6), its inner side edge was concordant when two chis closed up, the bottom is in the same horizontal plane, and the position of left ruler body and right ruler body arbitrarily changes.

2, multi-purpose drafting tool according to claim 1, above it is characterized in that left side rule pin (5) vertically place the top middle part of left ruler (4) or keep right, right rule pin (10) place above the right ruler (9) and vertically hit exactly, the protuberance of its upper end and top circular arc (6) fuses, the shape of cross section of two rule pin and ruler linkage section is circular arc or the middle high triangle that tilts to both sides protruding upward, and two rule pin stretch out the lower end at two chis respectively.

3, multi-purpose drafting tool according to claim 1 is characterized in that right ruler body inner top side face centre bit is equipped with a screw, compasses is housed (1) in the hole.

4, multi-purpose drafting tool according to claim 1 is characterized in that the breach (2) of the angle read being arranged the top of the section of stretching out left at the circular arc of right ruler body upper end, and the flat limit, left side of breach (2) is parallel with the inner side edge of right ruler (9).

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