CN201320906Y - Multipurpose combined teaching aid - Google Patents

Abstract

The utility model discloses a multipurpose combined teaching aid, which is characterized by comprising a main rule 1, an auxiliary rule 6, a sliding rule 8 and a sliding rule 9, wherein a movable groove 2 is transversely arranged on the middle portions of the main rule 1, the auxiliary rule 6 and the sliding rules 8,9, one end of the main rule is a semi-circular protractor 4, and a chalk rack 3 is arranged on the main rule, one end of the auxiliary rule 6 and the semicircular center of the protractor 4 on the main rule are connected through a hollow rotation shaft 5, a gasket is arranged between the main rule and the auxiliary rule, a positioning device is arranged on the hollow rotation shaft below the main rule, and a compression spring is installed on a sliding shaft 7 which is used to connect the main rule 1, the auxiliary rule 6, the sliding rule 8 and the sliding rule 9. The multipurpose combined teaching aid provided by the utility model has simple structure, low making cost and convenient use, which can replace existing teaching compasses, arbitrary square, ruler, T square, geometric circle nail board and the like, can finish the figures, such as circle, sector, oblique triangle, rectangle, square, parallelogram, trapezoid, parallel, vertical line, straight line and circle tangent, has convenient, accurate and fast operation in teaching and drawing, and can greatly shorten the time for teaching and drawing.

Description

The multipurpose combined appliance for teaching

Technical field

The utility model relates to a kind of teaching aid, is specifically related to a kind of teaching drawing tool.

Background technology

Existing teaching drawing teaching aid has compasses, ruler, set square etc. multiple, each corresponding figure that can both draw, but draw multiple figure or complex figure for needs, just need to use multiple teaching aid just can finish, the teacher will be equipped with multiple drafting instrument at school the time simultaneously, when drawing, to do corresponding replacing, process is more loaded down with trivial details, can not on a kind of apparatus, draw simultaneously and need figure, and there are many geometric figures all not have ready-made teaching aid to show, the teacher have to draw when teaching again and again, and is not only time-consuming but also require great effort; There is quite a few student to do one's exercises or during operation, loaded down with trivial details because of drawing, the big phenomenon of error usually appears.

Summary of the invention

The purpose of this utility model provides a kind of multipurpose teaching aid, and it can be showed and the multiple teaching figure that draws simultaneously, also can be used as student's schooling apparatus.

In order to achieve the above object, the technical scheme that the utility model adopted is: be provided with main scale, main scale is marked with the length scale, main scale---hold to be semicircle protractor, protractor is marked with angle index, determines angle when can be used for charting, and the intermediate lateral of main scale is provided with loose slot, on main scale, also be provided with and be used for fixing chalk along the axially movable chalk frame of main scale; Other is provided with a secondary chi that indicates the length scale, the intermediate lateral of secondary chi is provided with loose slot, one end of secondary chi and the semicircle center of the protractor on the main scale are carried out axle by hollow rotating shaft and are flexibly connected, make the major-minor chi rotate or to rotate mutually around hollow rotating shaft, between main scale and secondary chi, pad is being set on the hollow rotating shaft, to increase the spacing of major-minor chi, below main scale, be provided with positioner (annular magnet) on the hollow rotating shaft, hollow rotating shaft can be with secondary chi, pad, main scale, annular magnet splices together versatilely, annular magnet can be with main scale, secondary chi is adsorbed on the blackboard main scale, secondary chi can be again to sway on blackboard mutually in the axle center with the hollow rotating shaft; Be provided with the slip chi that indicates the length scale again, the intermediate lateral of slip chi is provided with loose slot, be movably connected on the loose slot by sliding axle between slip chi and the slip chi, each end of slip chi is movably connected on the loose slot of main scale, secondary chi respectively by sliding axle, make between slip chi and the slip chi and can slide along loose slot, each end of slip chi and slip chi can slide along the loose slot slip of main scale and the loose slot of secondary chi respectively again; Secondary chi is last, and the slip chi is following, and slip chi, secondary chi can slide along loose slot mutually.When secondary chi and the overlapping withdrawal of slip chi when main scale is drawn close, owing to pad is arranged and the empty position of staying (distance) between the major and minor chi, sliding axle because of auxiliary connection chi and slip chi is equipped with the compression spring again, make secondary chi, slip chi can overlap to form ruler after regaining, can draw straight line, also secondary chi can be drawn in when getting back near main scale, two slip chis are spurred along the main scale rectilinear direction, extend, can make secondary chi and slip chi connect into longer ruler, can draw long straight line; After secondary chi and slip chi are opened, can the slip chi that be connected in secondary chi is overlapping, or two slip chis are linked to be a ruler, form triangle by the inner edge of main scale, secondary chi, slip chi, the triangle that is used for picture system various ways, and can determine leg-of-mutton corner according to protractor; When needs are showed or are drawn various triangular, two slip chis can be intersected, the other end with them intersects with main scale and secondary chi respectively again, can show and a plurality of triangles that differ in size that can draw; When needs draw the triangle vertical line, slip chi and the secondary chi that connects main scale can be intersected triangle, the slip chi of auxiliary connection chi is removable to be made it perpendicular to main scale, forms leg-of-mutton vertical line, and triangle and leg-of-mutton vertical line can directly draw; Because they are to be movably connected on the loose slot for main scale, secondary chi, slip chi, so can be transformed into various triangles; When needing displaying or drawing square, rectangle, secondary chi, slip chi are opened, because every all indicating the length scale on the chi, as long as can obtain corresponding square or rectangular on main scale and secondary chi, with the method parallelogram of also can showing and draw just the slip chi is moved; Need to show or draw variously when trapezoidal that the position that the slip chi is moved to setting on main scale and secondary chi just can be showed and draw needed trapezoidal; Need the picture bowlder, with secondary chi, the slip chi is regained, and chalk is fixed on the chalk frame, be the center then with the hollow rotating shaft, rotate that chalk can be drawn and make circle on blackboard, need in circle, draw when fan-shaped, draw earlier circle open auxiliary chi then, measure central angle having on the main scale of protractor, draw fan-shaped radius with the inner edge of secondary chi and main scale with secondary chi, the fan-shaped of relative central angle of promptly can drawing, when needing the tangent line of picture circle, can be radius, make the slip chi intersect vertical with secondary chi with secondary chi, tangent line can draw on circular arc, in the time of need drawing parallel lines, can make the slip chi parallel with main scale or the slip chi is parallel with secondary chi, parallel lines can draw.Utilize the utility model can show and the multiple different teaching figure that draws, reach the purpose of this utility model.

Because existing blackboard for education is to be made by iron plate or other materials, so the positioner that is arranged on the hollow rotating shaft is magnet or sucker.

Multipurpose combined appliance for teaching provided by the utility model is simple in structure, cost of manufacture is low, and is easy to use, its alternative existing educational compasses, any set square, ruler, T-square, geometric figure nail-plate etc., it has increased square as teaching aid, rectangle, flat shape quadrangle, teaching aid such as trapezoidal; It can finish round, fan-shaped, arbitrary triangle, square, rectangle, parallelogram, trapezoidal, parallel lines, vertical line, straight line, circle tangent line figures, in teaching, both can show the teaching figure, can chart again, also can or dwindle triangle, square, rectangle, parallelogram, trapezoidal expansion; It is easy and simple to handle, accurately, fast, has shortened the teaching drawing time widely.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment multipurpose combined appliance for teaching.

Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6 are the utility model embodiment conversion schematic diagram.

The specific embodiment

In the structure shown in the figure, main scale 1 is marked with the length scale, one end of main scale is semicircle protractor 4, protractor is marked with angle index, determine angle when can be used for charting, the intermediate lateral of main scale is provided with loose slot 2, also is provided with to be used for fixing chalk along the axially movable chalk frame 3 of main scale on main scale; Other is provided with a secondary chi 6, secondary chi 6 is marked with the length scale, the intermediate lateral of secondary chi is provided with loose slot 2, one end of secondary chi 6 and the semicircle center of the protractor 4 on the main scale are carried out axle by hollow rotating shaft 5 and are flexibly connected, make the major-minor chi rotate or to rotate mutually around hollow rotating shaft 5, between main scale and secondary chi, pad is being set on the hollow rotating shaft 5, to increase the spacing of major-minor chi, below main scale, be provided with positioner on the hollow rotating shaft, an end of the major-minor chi that links together can be fixed on the blackboard; Be provided with slip chi 8 and slip chi 9 again, slip chi 8 and slip chi 9 all indicate the length scale, the centre of two slip chis is horizontally set loose slot 2 all, one end of slip chi 8 is movably connected on the loose slot of secondary chi 6 by sliding axle 7, secondary chi 6 is last, slip chi 8 is following, sliding axle 7 is equipped with the compression spring, one end of the other end of slip chi 8 and slip chi 9 is movably connected on the sliding tray by sliding axle 7, slip chi 9 is last, and slip chi 8 is following, and the other end of slip chi 9 flexibly connects main scales 1 on loose slot by sliding axle 7, slip chi 9 is descending main scale at last main scale 1, secondary chi, the slip chi can slide along loose slot mutually.After secondary chi 6, slip chi 8 and slip chi 9 are regained, between the major-minor chi because of there being the pad sky to stay position (distance), the sliding axle 7 of auxiliary connection chi 6 and slip chi 8 is equipped with the compression spring, placements of having living space after slip chi 9 is regained, and be sandwiched in the middle of secondary chi 6 and the slip chi 8, thereby the formation ruler can be drawn straight line, also can be when regaining secondary chi 6, slip chi 8 and slip chi 9 extend along the rectilinear direction pulling of main scale 1, make slip chi 8 and secondary chi 6 connect into longer ruler and can draw long straight line; After secondary chi 6, slip chi 8 and slip chi 9 are opened, form square by the inner edge of main scale 1, slip chi 6, slip chi 8, slip chi 9, also can form rectangle, parallelogram, trapezoidal etc., be used for showing or draw system square, rectangle, parallelogram, trapezoidal; Can make slip chi 8 and main scale 1, or make slip chi 9 parallel, be used for picture system parallel lines with secondary chi 6; In the time will showing or draw the system triangle, can slip chi 8 and secondary chi 6 is overlapping, make main scale 1, secondary chi 6, slip chi 9 form triangle, also slip chi 8 and slip chi 9 can be overlapped into the triangle that ruler can form various ways equally, and can determine leg-of-mutton corner according to protractor 4, draw the triangle of system different angles; Needing the picture bowlder, secondary chi 6, slip chi 8, slip chi 9 regained, and chalk is fixed on the chalk frame 3, is the center with hollow rotating shaft 5 then, rotates, and chalk can be drawn on blackboard and make circle, can the draw center in the center of circle 0, the hollow position of hollow rotating shaft 5; Because main scale 1 is marked with the length scale, chalk frame 3 can slide along the loose slot of main scale 1, can determine radius of a circle picture circle, and can open auxiliary chi 6, slip chi 8, slide 9, with the inner edge of main scale 1 or secondary chi 6 radius of a circle that can draw, also can on the protractor 4 of main scale 1, measure fan-shaped central angle with secondary chi 6, with the hollow of hollow rotating shaft 5 is the center of circle, it is fan-shaped to draw with the inner edge of main scale 1 and secondary chi 6, can be the radius tangent line that mobile slip chi 8 can the picture circle on secondary chi 6 with secondary chi 6 also; Utilize the utility model multiple different teaching figure that can draw simultaneously, reach the purpose of this utility model.

Because being iron plate or other materials, makes existing blackboard for education, so the positioner that is arranged on the hollow rotating shaft 5 is magnet or sucker.

Claims (2)

1, a kind of multipurpose combined appliance for teaching, also can be used as student's schooling apparatus, it is characterized in that: be provided with main scale [1], main scale [1] is marked with the length scale, one end of main scale is semicircle protractor [4], protractor is marked with angle index, and the intermediate lateral of main scale is provided with loose slot [2], and being provided with on main scale can be along the axially movable chalk frame of main scale [3]; Other is provided with a secondary chi [6], secondary chi [6] is marked with the length scale, the intermediate lateral of secondary chi is provided with loose slot [2], one end of secondary chi [6] and the semicircle center of the protractor [4] on the main scale [1] are carried out axle by hollow rotating shaft [5] and are flexibly connected, upward between main scale and secondary chi, pad is set at hollow rotating shaft [5], below main scale, is being provided with positioner on the hollow rotating shaft; Be provided with slip chi [8] and slip chi [9] again, all indicate the length scale on slip chi [8] and the slip chi [9], every intermediate lateral the slip chi is provided with loose slot [2]; One end of slip chi [8] is movably connected on the loose slot of secondary chi [6] by sliding axle [7], the other end is movably connected on the loose slot by the end of sliding axle [7] with slip chi [9], and the other end of slip chi [9] is movably connected on the loose slot of main scale [1] by sliding axle [7]; Make the sliding axle [7] that main scale [1] is connected with slip chi [9], secondary chi [6] is connected with slip chi [8] that the compression spring is housed, the loose slot of the loose slot of the loose slot of the loose slot of main scale and slip chi, the loose slot of secondary chi and slip chi, slip chi and slip chi, flexibly connect by sliding axle [7], secondary chi is last, and the slip chi is following.

2, multipurpose combined appliance for teaching according to claim 1 is characterised in that altogether: the positioner that is arranged on the hollow rotating shaft [5] is magnet or sucker.

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