CN2138043Y

CN2138043Y - Multipurpose ruler with trigonometrical functions calculator

Info

Publication number: CN2138043Y
Application number: CN 92212626
Authority: CN
Inventors: 唐检生
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-11
Filing date: 1992-04-11
Publication date: 1993-07-14
Anticipated expiration: 2002-04-11

Abstract

The utility model relates to a multipurpose ruler with a trigonometrical functions calculator, which comprises compasses, a semi-circle gauge installed on the compasses and a T-shaped ruler; the utility model is characterized in that the semi-circle gauge is composed of two 90 DEG sector rings having different radius; the two sector rings are connected; the T-shaped ruler is inversely installed in the included angle of the two legs of the compasses; length unit and graduation are labeled on the main ruler, the auxiliary ruler and the vertical ruler of the T-shaped ruler and the front side of the two legs of the compasses. The utility model has the advantages of simple structure, wide purpose, convenient and fast use, and collects the compasses, a set-square, a straightedge, a protractor and a table of trigonometric functions to integration; the multipurpose ruler also has the function of trigonometric function calculation, and is especially suitable for use as a learning and drawing tool for the students of the middle school, institute, and the vocational school.

Description

Multipurpose ruler with trigonometrical functions calculator

A kind of have the multipurpose ruler of trigonometric function computing function to advise, and belongs to a kind of drawing appliance of loop curve.

In usual geometric construction, compasses and ruler are main tool, and set square and protractor are aids, and these instruments also because their shapes are not of uniform size, carry also inconvenient because number of packages is many, and it is more bothersome to vary during use.The patent No. 87201501 discloses a kind of Napier's compasses, and the rule and the adjustable rule of additional band graphometer can be drawn circle, right angle with this Napier's compasses on compass foot, angle measurement degree, and the set square use of making varied angle, but the purposes scope is wide not enough.

The purpose of this utility model is to provide a kind of purposes in extensive range, and has the multipurpose ruler rule of trigonometric function computing function.

The utility model is to realize above-mentioned purpose like this.Compasses are made up of handle and two pin that the drawing device is housed in the bottom, and there is a groove bottom of compass foot to the top of pin, and place, the axle center of compasses handle has oblong aperture, and the bottom of handle has for embedding and the fixing groove of compass foot upper end.The groove both sides of the upper end of compass foot and handle are processed with a pair of concentric circle holes, and its center of circle is the intersection point of compass foot.The two pin body plates of compasses inboard and the groove limit of handle are riveted joint movingly, and the circular hole on two pin body plates of the groove limit of outside handle and compasses then is processed into the screw that matches with thumbscrew.T shape chi is in the angle that the handstand shape is contained in the compasses bipod, and its main scale is loaded in the groove of two pin, and perpendicular chi passes the oblong aperture of the compasses arbor heart, and can move up and down.In the groove at the T shape chi main scale back side, the secondary chi that can extract propelling out is housed, in the rectangular slot in main scale front, be equipped with for the handle of stirring secondary chi.Indicate scale with long measure in the front of two pin of compasses and the main scale of T shape chi, secondary chi and perpendicular chi, this scale is that to get the needed length of compass foot be a unit, again it is divided into 100 five equilibriums at least, compass foot is that initial point is demarcated downwards with the intersection point of bipod, and the perpendicular chi of T shape chi is upwards demarcation of initial point with its intersection with main scale.T shape chi main scale is an initial point with the center line of perpendicular chi, marks scale to both sides respectively, and its end point values is the threshold value of secondary chi; Secondary chi is an initial point with the end of stretching out, and inwardly marks scale.Graphometer is that the eccentric circular ring by two an angle of 90 degrees is formed by connecting, and its initial line is fixed on the crus mediale body plate of compasses, and whole limit is fixed on the inner side edge of compasses handle groove, and initial line and whole limit are in line.The radius of two eccentric circular rings does not wait, and its center of circle overlaps with the intersection point of two pin upper ends of compasses, and is marked with angle index at eccentric circular ring.

The utility model is simple in structure, integrate compasses, ruler, set square, protractor and trigonometric table, purposes is in extensive range, and is convenient to use, and have the trigonometric function computing function, be specially adapted to middle school student, the student of universities learns drawing instrument.

Accompanying drawing is a structural representation of the present utility model, also explains the book extract accompanying drawing.

Picture head (1) is contained in the lower end of compasses A pin (4), and syringe needle (12) is contained in the lower end of compasses B pin. T shape chi main scale (3) is loaded in the groove of compasses bipod, and perpendicular chi (9) then is passed in the compasses handle (7) that the place, axle center has slot. In the groove at T shape chi main scale (3) back side secondary chi (2) is housed, is equipped with in the positive rectangular slot for stirring the handle (11) of secondary chi (2). One end of big eccentric circular ring (5) passes the groove of compasses A pin (4), be fixed on the bottom land limit of B pin (10), the top of little eccentric circular ring (6) links to each other with the end of big eccentric circular ring (5), its tail end is fixed on the inner side edge of compasses handle (7) groove, and thumbscrew (8) is contained on the outer side edges of compasses handle (7) groove.

Embodiment of the present utility model is: compass foot, the main scale (3) of T shape chi, secondary chi (2), perpendicular chi (9) and the big eccentric circular ring (5) of graphometer, little eccentric circular ring (6) are used the corrosion resistant metal board making, compasses handle (7) processes back chromium plating polishing with mild steel, thumbscrew is processed with carbon steel, screw rod is M2～M4, and syringe needle (12) and picture head (1) adopt commercially available part.

Claims

1, a kind of by compasses, be loaded on the multipurpose ruler rule that the trigonometric function computing function is arranged that graphometer on the compasses and T shape chi are formed, it is characterized in that: there is a groove on the bottom of compass foot to the top of pin, place, the axle center of compasses handle has oblong aperture, and the bottom of handle has for embedding and the fixing groove of compass foot upper end.

2, a kind of multipurpose ruler rule that the trigonometric function computing function is arranged according to claim 1, it is characterized in that: T shape chi is in the angle that the handstand shape is contained in the compasses bipod, its main scale is loaded in the groove of two pin, and perpendicular chi passes the oblong aperture of the compasses arbor heart, and can move up and down.

3, a kind of multipurpose ruler rule that the trigonometric function computing function is arranged according to claim 1, it is characterized in that: graphometer is that the eccentric circular ring by two an angle of 90 degrees is formed by connecting, its initial line is fixed on the crus mediale body plate of compasses, whole limit is fixed on the inner side edge of compasses handle groove, and initial line and whole limit are in line.

4, according to claim 1,3 described a kind of multipurpose ruler rule that the trigonometric function computing function is arranged, it is characterized in that: the radius of two eccentric circular rings does not wait, and its center of circle overlaps with the intersection point of two pin upper ends of compasses, and is marked with angle index at eccentric circular ring.

5, according to claim 1,2 described a kind of multipurpose ruler rule that the trigonometric function computing function is arranged, it is characterized in that: in the groove at the T shape chi main scale back side, the secondary chi that can extract propelling out is housed, in the rectangular slot in main scale front, is equipped with for the handle of stirring secondary chi.

6, according to claim 1,2 described a kind of multipurpose ruler rule that the trigonometric function computing function is arranged, it is characterized in that: indicate scale in the front of two pin of compasses and the main scale of T shape chi, secondary chi and perpendicular chi with long measure, this scale is that to get the needed length of compass foot be a unit, again it is divided into 100 five equilibriums at least, compass foot is that initial point is demarcated downwards with the intersection point of bipod, and the perpendicular chi of T shape chi is upwards demarcation of initial point with its intersection with main scale.