CN2060734U - Multi-purpose drawing aids - Google Patents

Abstract

The utility model discloses a multi-purpose drawing apparatus for the primary and secondary school students, teaching and design drawing, mainly comprising a main shaft, an angle measuring pin, a sliding ruler with graduations and a connection ruler. With simple structure, multiple purposes and flexibility, the utility model has the functions of set-square, compasses, a protractor and an angle-square and has the feature of drawing circles on a glass plate and a metal plate.

Description

Multi-purpose drawing aids

The utility model is a kind of multipurpose plotter that relates to drawing appliance, the particularly multipurpose plotter that functions such as set square, compasses, protractor, angle square are integrated in one.

Drawing appliance function singlenesses such as existing set square, compasses, protractor, angle square are used and to be carried inconvenience, particularly when glass plate or metallic plate upper drawing circle, because compass foot can not insert fixedly centre point of glass or metallic plate, can't draw circle.Therefore, the relevant teaching that relates to round knowledge of middle and primary schools, the teacher carries wooden small blackboard.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art and provides a kind of simple in structure, and is easy to use, and can make the multipurpose plotter with functions such as compasses, set square, protractor, angle squares of circle on glass plate and metallic plate.

The scheme that solves the utility model task is: multipurpose plotter is by the main shaft that sliding tray is arranged, and valve rubber compass foot, angulation pin, slip chi, flexible connection chi constitute.

Describe an embodiment of the present utility model in detail by accompanying drawing below.

Fig. 1 is the multipurpose plotter structure chart.

Fig. 2 is the multipurpose plotter of folding up.

Fig. 3 is a valve rubber compass foot schematic diagram.

Fig. 4 is the protractor schematic diagram.

Fig. 5 is the angle square schematic diagram.

Constitute the main shaft (1) of multipurpose plotter among Fig. 1, the one end is processed into handle (2), triangle locating slot (3) and angulation pin holddown groove (4) have been dug in the centre, the embedded angulation pin (5) of holddown groove (4), the other end of main shaft is provided with spring braking card (6) and sliding tray (7), the top breach of matrix sliding tray (7) is sealed by sheet metal (8), the center of sheet metal (8) is drilled with angulation cushion hole (9), and will seal sheet metal (8) with fixed screw (10) and fix, (11) be the valve rubber compass foot that any direction freely rotates, the front of slip chi (12) is carved with 45 to an angle of 90 degrees scale, slip chi long measure centimeter scale is carved with at the back side, in pencil or the chalk folder (13) degree of tightness set screw (14) (see figure 2) is housed, (15) for being connected and fixed screw, flexibly connect the scale that chi (16) is carved with 0 to 90 degree and 90 to 180 degree angles, (17) are for connecting buckle, (18) be the buckle sliding tray, (19) are for connecting chi.

Fig. 2 is the multipurpose plotter after folding, since main shaft (1) be connected chi (19), slip chi (12) is with to be connected chi (16) fixedly connected, so as long as slip chi (12) is extracted out positive folding from sliding tray (7), buckle (17) is embedded among the buckle slot (18), this folding use is easy to carry again.

Valve rubber compass foot among Fig. 3 is by the rubber foot pad (21) that digs adsorption tank (20), and metal or plastic cylinder tube (22), ball (23) and rotation screw axle (24) constitute.

During use, slip chi (12) is inserted in the sliding tray (7) of main shaft (1), connect chi (16), (19) embed connection in the buckle slot (18) by buckle (17), just become a set square, along with slip chi (12), moving of buckle (17), can obtain the many set squares that angular dimension is different, if in the time of will selecting the set square of certain angle, earlier refer to spring braking card (6) is up promoted with the big mother of left hand, the right hand aligns the angle index above the slip chi (12) again with main shaft (1) inner edge, braking clamp (6) loosens chucking, and the number of division that main shaft (1) inner edge is aimed at is exactly main shaft (1) the institute diagonal angle number of degrees.Owing to always keep vertical when slip chi (12) is mobile, so any set square that obtains all is a right angle triangle with main shaft (1).

Drawing bowlder, is the center of circle with valve rubber compass foot (11), and compass foot (11) to the slip chi length of live splint (13) is radius, and holding handle (2) one week of rotation is exactly a circle.As to draw a radius be 10 centimetres circle, elder generation's mobile slip chi (12), main shaft (1) set square inner edge is alignd with the slip chi back side 10 centimeter scale, adept again handle rotates a week, be exactly radius be 10 centimetres circle, be characterized in the absorption of compass foot valve rubber, stationarity is good, can be used for glass plate and metallic plate upper drawing circle.

During angulation, as long as the connection chi (16) that is carved with the angle number is put into triangle locating slot (3) on the main shaft, angulation pin (5) inserts in the jack (9), just constitute isosceles triangle protractor shown in Figure 4, the method of angulation has acute angle, two kinds at obtuse angle: during the amount acute angle, the inner edge of slip chi (12) is alignd with one side of institute angulation, with angulation pin (5) jack (9) is the center of circle, angulation pin (5) is drawn circle for radius, connect chi (16) this moment just in time is string on the quadrant arc, when another limit at equivalent angular pin (5) and angle was overlapping, the scale of angulation pin indication on connect chi (16) was exactly the angle at this angle; During the amount obtuse angle, the inner edge extended line of slip chi (12) is alignd with a limit at obtuse angle, it is overlapping with another limit at obtuse angle to clockwise rotate angulation pin (5), and the scale (90 to 180 degree scope) that the angulation pin is gone up indication at connection chi (16) is exactly the angle at this obtuse angle.

In addition, slip chi (12) then can be constituted angle square shown in Figure 5 by parallel the moving of main shaft (1), can be used as vertical line, use on parallel lines or detection angles and plane.

What be worth proposition is that the utility model can be processed into the specification that varies in size that students in middle and primary schools, teaching and simple designs are used with lucite or transparent plastic.

Claims (2)

1, a kind of drawing appliance collection set square that relates to, compasses, protractor, functions such as angle square are in the multipurpose plotter of one, it is characterized in that this plotter is by main shaft (1), slip chi (12), connect chi (16), (19) constitute, one end of its main shaft (1) is moulded and is cast handle (2), the centre is moulded and is cast with triangle locating slot (3), angulation pin holddown groove (4), equipped amount angular pin (5) in the groove (4), the other end is equipped with spring braking card (6), and mould and be cast with sliding tray (7), the breach of matrix sliding tray (7) is sealed by sheet metal (8) and is with fixed screw (10) that sheet metal (8) is fixing, an angulation cushion hole (9) is bored by sheet metal (8) central authorities, and valve rubber compass foot (11) is equipped with on the top of main shaft; Slip chi (12) front is carved with 45 to an angle of 90 degrees scale, slip chi length centimeter scale is carved with at the back side, slip chi (12) be connected chi (16) and connect an end pencil or chalk live splint (13) are housed, 0 to 90 degree and 90 to 180 degree angle index are carved with in the front that connects chi (16), and buckle (17) is housed, connection chi (19) central authorities mould and are cast with elongated buckle slot (18).

2, according to claims 1 described multipurpose plotter, it is characterized in that valve rubber compass foot (11) by moulding the valve rubber (21) that is cast with adsorption tank (20), metal or plastic cylinder tube (22), ball (23), rotation screw axle (24) constitute.

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