CN206475643U - Clock ruler protractor - Google Patents

Abstract

The utility model is related to a kind of clock ruler protractor, including disk frame, protractor, equidistant circular hole, paper centering scale, double-slider mechanism etc.；Disk frame design has 360 graduation marks, realizes overall basic exercise by built-in two-orbit and cross slide rail, and paper centering scale is slided in orbit can draw any angle triangle, circular arcs with arbitrary angles and fan-shaped at any angle；Double-slider mechanism is slided on cross slide rail can draw ellipse；Equidistant circular hole can draw the circle that radius is integer length；Paper centering scale passes through empty stretched come angle needed for the swing chi swing in paper centering scale is would fit snugly within by rotating shaft can draw round tangent line and polygon, the equidistant advance of paper centering scale can draw parallel lines on disk frame；This product meets the drawing demand in the fields such as mathematics, machinery, fundamentally overcome drawing in the past need to replace again and again instrument cumbersome and efficiency it is low the drawbacks of, reach raising drawing efficiency with ensureing the accurate purpose of drawing.

Description

Clock ruler protractor

Technical field

The utility model is related to schooling apparatus field, and in particular to a kind of clock ruler protractor.

Background technology

Clock is indispensable daily necessities in our daily lifes, and good appearance has original characteristic, great representative Property, the inspiration of clock ruler protractor construction just derives from clock, by by the function of multi-functional ruler-compasses and the pointer phase of ruler With reference to compact practicality is convenient for carrying, and rotating disk is to copy the dial plate of clock and design inside ruler of the present utility model, can be with Many irregular figures such as any angle, ellipse, polygon, tangent line and lines are drawn, the fields such as mathematics, machinery are met Drawing demand, fundamentally overcome drawing in the past need to replace again and again instrument it is cumbersome, the drawbacks of efficiency is low, reach raising drawing Efficiency is with ensureing accurate purpose of drawing.

Utility model content

The utility model purpose is to provide a kind of clock ruler protractor, mainly include disk frame, protractor, etc. between Away from hole, paper centering scale, double-slider mechanism, swing chi, cross slide rail；Two-orbit built in disk frame, protractor is placed in second layer rail In road, it is connected with paper centering scale by rotating shaft, there is the equidistant circular hole got through on the ruler side of protractor；Paper centering scale is placed in first layer In track, paper centering scale, which is rotated, can draw any angle and at any angle fan-shaped, arc, and paper centering scale can pass through disk frame On it is empty it is stretched come, swing chi and be hidden in paper centering scale and connected by rotating shaft, swing chi and paper centering scale with the use of can To draw the tangent line of polygon and circle；Double-slider mechanism is embedded in the cross slide rail behind protractor using crosshead shoe, root According to a dynamic point to two fixed point it is distance and can draw ellipse equal to fixed length.

The utility model realizes overall basic exercise, protractor and disk rim fits, double track by built-in two-orbit Road can be moved simultaneously, can be moved alone again, not only time saving but also conveniently, and the unique design run using two-orbit realizes ruler amount The multifunctionality of angle device.

The beneficial effects of the utility model are：Meet teacher to attend class demand, can more intuitively, conveniently, flexibly draw The models such as any angle, polygon, tangent line, ellipse, the drawing that clock ruler protractor meets the fields such as mathematics, machinery is needed Ask, fundamentally overcome in the past drawing again and again replace instrument cumbersome and efficiency it is low the drawbacks of, reach raising drawing efficiency and The purpose of quality.

Brief description of the drawings

Accompanying drawing 1 is the overall structure diagram of clock ruler protractor；

Accompanying drawing 2 is that paper centering scale stretches out schematic diagram；

Accompanying drawing 3 is protractor structure schematic diagram.

Embodiment

Refering to Fig. 1, Fig. 2, Fig. 3, the utility model include disk frame 101, protractor 102, equidistant circular hole 103, in Heart chi 104, double-slider mechanism 105, swing chi 201, cross slide rail 301；Two-orbit built in disk frame 101, protractor 102 is put In in second layer track, it is connected with paper centering scale 104 by rotating shaft, there is the equidistant circular hole got through on the ruler side of protractor 102 103；Paper centering scale 104 is placed in first layer track, by the cavity on disk frame 101, swings chi 201 and is hidden in paper centering scale 104 It is interior and connected by rotating shaft；Double-slider mechanism 105 is embedded in the cross slide rail 301 behind protractor 102 using crosshead shoe.

When it is implemented, clock ruler protractor is placed on into the surfaces such as blackboard or drawing, bowlder is drawn：In protractor Chalk is injected in equidistant circular hole 103 on 102 Scale ruler side, chalk is rotated, limiting chalk track by track 1 draws Radius is the circle of integer, and the circle of any radius can also be drawn by sliding nib movement.

When drawing oval：There is cross slide rail 301 behind the fixing axle of protractor 102, using double-slider mechanism 105, pass through Theorem " dynamic point to two fixed points distance and equal to fixed length " draws oval, is adjusted by knob, fixed different holes can To draw the ellipse of different focal.

When drawing triangle：Clock ruler protractor draw triangle in terms of break through, the teaching aid can not only draw 30 °, 45 °, 90 ° of common angle triangle, can also draw the triangle of other uncommon angles, be drawn by rotating protractor 102 Any angle, draws connecting line by the rotation of paper centering scale 104 and then draws any angle triangle.

By rotating protractor 102 and paper centering scale 104, circular arcs with arbitrary angles is drawn and fan-shaped at any angle；Paper centering scale 104 cavity from disk frame 101 is passed, and the swing chi 201 that would fit snugly within by rotating shaft in paper centering scale 104 swings random angle Degree, can draw round tangent line and any regular polygon, the vertical rotation axis of paper centering scale 104, which advances, can draw parallel lines, grid, not hang down Straight advance can draw parallelogram.

Claims (1)

1. a kind of clock ruler protractor, it is characterised in that：Including disk frame（101）, protractor（102）, equidistant circular hole （103）, paper centering scale（104）, double-slider mechanism（105）, swing chi（201）, cross slide rail（301）；Disk frame（101）It is built-in Double-layer track, protractor（102）It is placed in second layer track, with paper centering scale（104）Connected by rotating shaft, protractor（102）'s There is the equidistant circular hole got through on ruler side（103）；Paper centering scale（104）It is placed in first layer track, passes through disk frame（101） On cavity pass, swing chi（201）It is hidden in paper centering scale（104）Interior and and paper centering scale（104）Connected by rotating shaft；Double-slider Mechanism（105）Protractor is embedded in using crosshead shoe（102）Cross slide rail below（301）It is interior.