CN2347784Y

CN2347784Y - 'Taiji' divider triangulator

Info

Publication number: CN2347784Y
Application number: CN 98210103
Authority: CN
Inventors: 喻仕杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-08
Filing date: 1998-02-08
Publication date: 1999-11-10
Anticipated expiration: 2008-02-08

Abstract

The utility model relates to a 'Taiji' divider triangulator, belonging to the field of a mapping tool. The utility model is characterized in that the center of a base plate is provided with a Tai Ji body which can move along a guide groove (see an abstract accompanying picture). All kinds of corresponding indication lines and groove holes are respectively carved in a plate and a body; through the corresponding movement of the body or the plate, the handwriting which is positioned in a certain groove or a hole moves; under the state of discarding a compasses, a protractor, a straight ruler and a triangle plate, any pattern of a circle, a circular arc, equal division and angle is drawn accurately.

Description

Branch triangulators such as Tai Ji

The utility model is related is branch triangulators such as Tai Ji in the survey field.

Geometric construction is the work that each middle and high student and engineers and technicians often run into.The pattern of circle, circular arc, five equilibrium and angle occupies sizable ratio in this work.Drawing the instrument of this class pattern, compasses, protractor, ruler, triangle version etc. before is the thing that must use, could be more satisfactory and finish exactly.But, as draw concentric justifying, the damage that certainly will leave vestige a little and may enlarge at its circle centre position more; To justify timesharing such as work, usually be difficult to grasp its yardstick, and form accumulated error and repeatedly grade again, and just can reach its ideal.

The purpose of this utility model is based on and addresses other bad phenomenon that run into and the branch triangulators such as Tai Ji that design when drawing, to solve the various drawbacks that occur when drawing.

The scheme that the utility model solves is, opens a circular hole at a base edition center, and corresponding body with another is done movingly.Circumference at its circular hole is carved with reticule; Corresponding another body is provided with index line and the groove and the hole of various needs, the person's handwriting of in groove, doing or its pen in the hole with its body movement therewith, promptly draw the pattern that can finish.Its detailed content is referring to accompanying drawing and be described below:

Referring to accompanying drawing 1, branch triangulators such as Tai Ji of the present utility model is characterized in that: the centre in triangular basis version (1) has a circular hole, periphery at its circular hole, be carved with week day reticule (4), be combined with a Tai Ji body (9) that can rotate in its circular hole, its structure is referring to accompanying drawing 2.Open a diameter wire casing (11) less than its body diameter at a diameter place of its body, a line limit (12) of its groove slightly is close to the center of circle and passes through.Its objective is and make person's handwriting just by its center of circle.One division index line (10) is carved in vertical its center of circle of also passing through with its groove, overlaps the start line of doing precision line (13) with its line, and the effect of its line is to improve the precision of grading, and its principle and precision can provide from following formula:

Precision line-spacing=fixed all day calibration line-spacing-(all day calibration line-spacing amount of day calibration line-spacing ÷ of fixed week) ÷ (setting smart component ÷ setting accuracy).

Example 1 is established: the calibration line-spacing was 1 millimeter in fixed all day, and an all day calibration line-spacing amount is 5 degree, smart branch 1 degree of setting, and setting accuracy 1 degree, refinement degree line-spacing:

1 millimeter-(1 millimeter ÷ 5) ÷ (1 ÷ 1)=0.8 millimeter.

Example 2 is established: setting accuracy is half degree, and all the other are with example 1, refinement degree line-spacing:

1 millimeter-(1 millimeter ÷ 5) ÷ (÷ was 30 minutes in 60 minutes)=0.9 millimeter (annotates: 1 degree=60 minutes)

In addition,, be carved with several radius index lines (15) in suitable place, all have hole (8), rule position in the corresponding position of its line, and all be carved with radius size line (14) on a line limit (12) of a diameter wire casing over against the center of circle of Tai Ji body (9).On the space of a whole page of triangular basis version (1) and over against the center of circle of circular hole, be carved with hole enlargement line (7) for enlarging to use, and also have a hole (8), corresponding rule position, in use, by three suction paper glue wrists (2) on its base version, branch triangulators such as Tai Ji are inhaled decided it in position.During as draw circles, hard-tipped pen are placed on interior corresponding radius of a circle index line (15) point in certain rule hole, position (8), drive Tai Ji body (9) with its pen and make circular motion, its person's handwriting also is the circle that will draw; Can affect its body rotation to increase its moment with another hand when making roundlet.As need its circle example being made ten five equilibriums is (are example with above-mentioned example 1 precision state), calibration index line (10) on the Tai Ji body (9) is aimed at the start line of week day calibration index line (4), on a line limit (12) its circle is made diameter line branches such as (make radius) odd numbers with hard-tipped pen, rotating the Tai Ji body then locates calibration index line to 35 degree (the 7th line), after again the 1st line of precision line (13) being aimed at week day reticule (4) 40 degree (the 8th line), make the 2nd diameter line (being divided in this circle 36 degree) again on its line limit, till extremely having divided thereupon.When making a certain circular arc or angle as need, using method is similar substantially.

The branch triangulators such as Tai Ji that the utility model provides, be under the situation that abandons drawing instruments such as compasses, protractor, ruler, triangle version, only cooperate the utility model just can once finish the pattern of any circle, circular arc, five equilibrium and angle in its scope with hard-tipped pen, and simple and direct and accurate, be effective high-speed mapping instrument.

Accompanying drawing has been represented specific embodiments of the present utility model.

At first accompanying drawing is described:

Fig. 1 represents structure chart of the present utility model;

Fig. 2 represents broken section structure enlarged drawing of the present utility model.

According to embodiment shown in the drawings, the triangular basis version made from transparency (1) goes up according to using needs, is carved with dimension line (3) on its sideline, with its accordingly, being carved with parallel dimension line (5), is to be used for the curve of certain pattern needs and to be equipped with so that draw parallel lines, curved slot (6).In addition at each angle suitably, respectively open a suitable circular hole, paper glue bowl (2) is inhaled in each embedding one in it, to make to inhale the usefulness of deciding the utility model.The line-spacing amount of week day bisector (4) decide by its whole size or precision of using object to need, wall week of its circular hole and be provided with guide groove (17), for ball (18) do guiding and with Tai Ji body (9) work usefulness movingly.On Tai Ji body (9), each index line of scribing except that aforementioned use needs outside precision line and the slotted eye, also is carved with radius size line (14) on its line limit.Basic circle hole (16) is to be useful for the drafting of special roundlet.At the peripheral wall of its body, impartial be distributed with several small sircle holes, each Kong Zhongjun adorns a compression spring (19) and a ball (18), will each pearl presses in people's guide groove (17) to form integral body with triangular basis version (1).Use needs for satisfying, lower plane is not on a planar line on Tai Ji body (9) and after triangular basis version (1) cooperates each, referring to accompanying drawing 2, its objective is: when the motion of Tai Ji body during less than the pattern that will draw, upset the utility model is fixed the Tai Ji body at a wire casing two ends with drawing pin and so on, utilizes hole, hole enlargement line (7) and corresponding rule position, cooperate the motion of triangular basis version, can draw any circle, circular arc, five equilibrium, angle pattern equally.

Claims

1, branch triangulator such as Tai Ji, feature of the present utility model is that the center of triangular basis version (1) has a circular hole, in its circular hole, correspondingly cooperate a Tai Ji body (9) that can rotate, at the periphery of its circular hole, all be carved with week day reticule (4), the limit perisporium in its hole is provided with guide groove (17), over against the center of circle in its hole, is carved with hole enlargement line (7), and have hole (8), corresponding rule position, respectively be provided with one at each place, angle of its version and inhale paper glue bowl (2).

2, branch triangulator such as Tai Ji according to claim 1, it is characterized in that Tai Ji body (9) goes up corresponding cooperation and be carved with calibration index line (10), precision line (13), radius index line (15) and advise a hole (8) accordingly with its line, and have a diameter wire casing (11) less than its body diameter, peripheral wall at its body, the impartial several small sircle holes of distribution, respectively adorn a compression spring (19) and a ball (18) in each hole, its body is with after triangular basis version (1) cooperates, and the last lower plane of each part is not all on a planar line.