CN2302899Y - Polar coordinate rule/divider - Google Patents

Abstract

The utility model relates to a polar coordinate gauge, which has the functions of a ruler, a compass, a triangle, a protractor, a polar coordinate, a ferule, etc., and the utility model is an optimal tool for study and teaching. In the utility model, a fixed ruler (8) and a protractor (1) are integrated, the fixed ruler (8) is provided with a foldable movable ruler (10) which can form two right-angle triangles with a movable ruler (2), and the middle part of the movable ruler (2) is provided with a sliding seam (3) of a pen seat (5); when the movable ruler (2) and the fixed ruler (8) are overlapped, the utility model can be also used as the ferule; when the movable ruler (2) is driven, the utility model can be used for polar coordinate demonstration, and the degree of an angle formed by a center line of the movable ruler (2) and the center line of the fixed ruler (8) is corresponding to the degree of the protractor (1).

Description

The polar coordinates sizing gauge

The utility model is the polar coordinates sizing gauges.Teaching aid with functions such as ruler, compasses, protractor, polar coordinates instrument, teacher's pointer, set squares.Utilize the utility model to impart knowledge to students or learn, can reach and make circle, sub-multiple angle, measuring angle, polar coordinates and demonstrate, do multiple purposes such as special graph.

The compasses of known technology, protractor, ruler respectively have independently function, in teaching and study use, need hold several properly, exist many inconvenience, and this apparatus designs in order to overcome above-mentioned defective.Use this apparatus can reach the function of apparatus such as compasses, protractor, ruler.When doing the angle, the size at angle can be read by the utilization hornwork constantly, can demonstrate the function of polar coordinate system simultaneously; Elliptical aperture on the utilization hornwork, circular hole, diamond hole etc. are convenient to hold this apparatus, the function of double as teacher's pointer.Advantages such as it is simple in structure, multiple functional, easy to use that this apparatus has.

The utility model is to be made of parts such as moving chi, scale, pen stands, and scale and protractor are one.Holes such as standard ellipse, circle, rhombus are arranged on the protractor, on the moving chi slidably pen stand is arranged, pen stand is lettering pen fixedly.

The utility model will be further described below in conjunction with accompanying drawing:

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

Fig. 2 is a plan view of the present utility model;

Fig. 3 is the pen stand section of structure;

Fig. 4 is the chi cross-sectional view.

With reference to Fig. 1,2,3,4, scale (8), moving chi (2), and the adjustable rule (10) on the scale (8) all has centimetre, the millimeter scale, scale (8) end has the pin of deciding (9), it is hollow deciding pin (9), last bore is big, following bore is little, but double as sharpens a pencil or the pencil sharpener of chalk, scale (8) can be one with protractor (1), the center line of scale (8) overlaps with the both sides at 180 ° of angles of protractor (1), the maximum angulation of protractor is 360 °, and scale (8) is two-layer folding, and the pin (9) of deciding that scale (8) is terminal is the fixed axis of scale (8) with adjustable rule (10) simultaneously.The other end of adjustable rule (10) has a card post (7) and (15) of not movable scale (8) to locate a C shape bayonet socket, to guarantee that the card post (7) on the adjustable rule (10) is an one with C shape bayonet socket card on the not movable scale (8).The center of circle of moving chi (2) center line throughput hornwork, moving chi (2) center line has pen stand sliding joint (3), sticks pen stand (5) in the pen stand sliding joint (3), and pen stand (5) can slide in pen stand sliding joint (3).Pen stand (5) is by sliding bottom (18), hold-down nut (11), the pen cap (12), compression spring formations such as (14), the outer wall of sliding bottom (18) has screw thread, hold-down nut (11) screws on it, can go up a certain scale place in moving chi (2) by fastening pen stand (5).Pack into the pen cap (12) and screwing on the sliding bottom (18) of pen (13), the afterbody of pen (13) is subjected to the pressure of pen stand (5) inner spring (14), and wearing and tearing have dynamic supplementary function to nib.Nib is slided all the time on the object that need are drawn.There are 30 ° of right angle triangle locating holes (6) and 45 ° of right angle triangle locating holes (4) the card post (7) of the mobile layer (10) on the scale (8) insertion locating hole (4) or (6) to be constituted promptly an acute angle is arranged is the right angle triangle of 30 ° or 45 ° on the moving chi (2).The zero graduation of moving chi (2) and the zero graduation of scale (8) and fixed axis (16) is arranged with the circle centre position of protractor (1), the zero graduation place of moving chi (2) is a circle cover, constitute axle sleeve with fixed axis (16), make chi (2) have the rotation flexibility, guarantee the property freely that moving chi (2) rotates.Fixed axis (16) end is a wedge angle, and the decide pin (9) terminal with scale (8) constitutes support foot.During drawing with the terminal wedge angle of fixed axis (16) and decide pin (9) while on the plane of need drawing object.

Moving chi (2) can also locate to utilize devices such as electronic or clockwork spring to drive moving chi (2) in its fixed rotating shaft (16) except manually.

The utility model adopts the bright material manufacturing of full impregnated, and makes colored graduation mark and corresponding colorful digital.Use this apparatus effect more obvious.

When using the utility model, when moving chi (2) is in arbitrary position, center line and moving chi (2) angle that center line constituted by scale (8) can be read angle by protractor (1), the variation of demonstration angle of departure and the quantitative relation of angle are unified characteristics, revolve the notion that rotary ruler (2) can clearly be explained any angle.Revolve rotary ruler (2) and can also go out circular arc or circle by the stroke in the pen stand (5) on the moving chi (2), utilization hornwork (1), demonstrate the relation of radian and central angle, constitute on the moving chi (2) certain any polar coordinates value by the angle of the scale on the moving chi (2) and protractor (1), moving chi (2) is overlapped with scale (8), hold the hole on the protractor (1), this apparatus is the teacher's pointer of teaching usefulness.

Claims (4)

1, a kind of multi-functional polar coordinates sizing gauge with ruler, compasses, protractor, polar coordinates instrument, teacher's pointer, set square, it is characterized in that constituting by protractor (1), scale (8), moving chi (2), adjustable rule (10), pen stand (5), pen stand (5) can be gone up at the pen stand sliding joint (3) of moving chi (2) and slide, adjustable rule (10) is not held fixing, perhaps terminal fixing with scale (8) with moving chi (2).

2, polar coordinates sizing gauge according to claim 1 is characterized in that the center line of scale (8) overlaps with the center of circle of protractor (1) with the intersection point of the center line of moving chi (2), is connected by fixed axis (16).

3, polar coordinates sizing gauge according to claim 1, it is characterized in that scale (8), adjustable rule (10) and moving chi (2) can constitute the right angle triangle that an acute angle is 30 ° or 45 °, perhaps will move chi (2) and make the double-layer folding chi, can constitute the right angle triangle that an acute angle is 30 ° or 45 ° with scale (8).

4, polar coordinates sizing gauge according to claim 1 is characterized in that moving chi (2) or with manual, perhaps uses the power transmission of other forms such as electronic, clockwork spring.

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