CN201280008Y

CN201280008Y - Multifunctional mapping tool

Info

Publication number: CN201280008Y
Application number: CNU2008201299025U
Authority: CN
Inventors: 黄一品
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-19
Filing date: 2008-07-19
Publication date: 2009-07-29
Anticipated expiration: 2018-07-19

Abstract

A multifunctional drawing tool comprises a linear main ruler, a semicircular auxiliary ruler and a C-shaped angle graduated disc, wherein the semicircular auxiliary ruler is located in the hollow circle of the main ruler; the C-shaped angle graduated disk is embedded in an I-shaped groove of a semicircular auxiliary ruler graduated disc and is fixed with the main ruler, and the notch faces a sliding groove; and the semicircular auxiliary ruler can rotate flexibly in the hollow circle of the main ruler and the C-shaped angle graduated disk. According to the structure, the main ruler and the C-shaped angle graduated disc can rotate around the semicircular auxiliary ruler in one direction to obtain the initial side and the final side of an angle, and corresponding angle value can be obtained from the main and auxiliary angle scales, which is similar to the principle of vernier caliper. The length of side can be read from the auxiliary length scales so as to achieve angle measurement, and the length measurement can be obtained by main length scales outside the main ruler. Accordingly, the multifunctional drawing tool has the complete functions of protractor and ruler, and has the advantages of small size, simple structure, convenient length measurement, and accurate angle measurement by rotation, and is more convenient and effectively in determining polar coordinates.

Description

A kind of multi-functional surveying and mapping tool

Technical field:

The utility model relates to a kind of surveying and mapping tool that combines ruler and protractor repertoire.

Technical background:

Existing ruler and protractor independently exist, and bring into play function separately.Because of standing crop hornwork shape is big, can not directly makes two broadside antennas of angle of departure when doing the angle, and the angulation inaccuracy, be difficult for reading, so there are all defectives of inconvenience of picture angle, angulation.

The utility model content:

In order to overcome the above-mentioned defective of standing crop hornwork, and further make up the function of ruler and protractor.The utility model provides a kind of shape small and exquisite, and novelty simple in structure can be convenient for measuring length, can directly accurately survey and draw the multi-functional surveying and mapping tool of angle by rotation again.

The technical scheme that its technical problem that solves the utility model adopts is: the utility model is made up of ruler shape main scale, semicircle secondary chi and C shape angle dial.Main scale one end is established an open circles, and the centre is opened a chute and communicated with open circles, and chute one side is established a unidirectional mechanism and extended in the open circles, and mechanism is 3/4ths circles and keeps concentric with open circles, outside the main scale and chute one side establish the length scale respectively; Semicircle secondary chi is provided with the I-shaped groove and can allows irreversible engine set up in wherein semicircle orifice and relative set, and has on the surface, top with 9 of the secondary angle indexs of 9 or 19 degree, one lattice, indicates 0～9 respective value respectively; C shape angle dial is provided with the same wide breach with chute, 36 leading role's degree scales with 10 degree, one lattice is arranged on the dial, and indicate respective angles numerical value.Semicircle secondary chi places in the main scale open circles, and C shape angle dial embeds in the I-shaped groove of semicircle secondary degree dial and with main scale and fixes, and breach points to chute, and semicircle secondary chi can rotate in main scale open circles and C shape angle dial flexibly.Through above setting, main scale and C shape angle index coil initial line and the whole limit that the unidirectional rotation of semicircle secondary chi can obtain the angle, read corresponding angle measurement from the major-minor angle index, promptly be similar to the slide measure counting principle, the length on limit can be read by secondary length scale, thereby realize the mapping of angle, and the mapping of length can be obtained by the main length scale in the main scale outside.

The beneficial effects of the utility model are: have the repertoire of protractor and ruler, shape is small and exquisite, and is simple in structure, can be convenient for measuring length, can pass through to rotate directly accurately mapping angle again, especially more convenient effective aspect definite polar coordinates.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified:

Fig. 1 is a vertical view of the present utility model;

Fig. 2 is the A-A profile of Fig. 1

Fig. 3 is a upward view of the present utility model

1, main scale 2, semicircle are opened secondary chi 3, C shape angle dial

4, main length scale 5, secondary length scale 6, leading role's degree scale

7, secondary angle index 8, chute 9, unidirectional mechanism

The specific embodiment

The mapping method at angle: angle measurement or do the angle and all pass through main scale (1) and C shape angle dial (3) and obtain around the secondary chi of semicircle (2) rotation.Before the mapping angle, must make zero earlier, it is major-minor angle index (6,7) 0 angular alignment on, be the center of circle of unidirectional mechanism (9) that 0 scale places on the summit at angle again, chute (8) downside is close to the initial line at angle, rotating main scale (1) and C shape angle dial (3) again allows chute downside and whole limit be close to, can read the numerical value of the front two of institute's angle measurement degree then by the numerical value on 0 scale sensing leading role's degree scale (6) of secondary angle index (7), and secondary angle index (7) the institute target numerical value that secondary angle index (7) upward aligns with leading role's degree scale (6) is exactly the numerical value of the units of institute's angle measurement degree.When drawing the angle, make zero earlier, the length that obtains initial line, limit that begins to rule of 0 scale along chute (8) downside from unidirectional mechanism (9) can be read by secondary length scale (5) again, rotate main scale again, the number of degrees can be read by major-minor angle index (6,7), obtain whole limit along the chute line then, so just can make a complete angle.Unidirectional on the other hand mechanism can guarantee that main scale (1) is unidirectional and be rotated counterclockwise and be easy to make zero.

Number reading method is given an example and mathematical principle: as read 22 °, between 20 °-30 ° of the 0 scale sensing leading role degree scales of secondary angle index, and secondary angle 2 numerical value and cylindrical leading role degree scale wherein one align that (if secondary angle index is with 9 ° of one lattice, then the scales with 40 degree align; If secondary angle index is with 19 ° of one lattice, then the scales with 60 degree align), and other secondary angle index all staggers with leading role's degree scale of cylindrical, getting final product reading be 22 °.

Mathematical principle: establishing required measured angular is the 10a+b degree, and a represents the numerical value on ten and hundred, and b represents the integer value of units, and 0＜b＜10.

∵ 10a＜10a+b＜10a+10 and leading role's scale are with 10 degree, one lattice.

Behind the angle of ∴ main scale rotation 10a+b, 0 scale of secondary angle index can drop between leading role's degree scale 10a and 10 (a+1) surely, and promptly ten and hundred bit value are a.

∵ secondary angle index is lattice with 9 ° or 19 ° again, i.e. be separated by 9b or 19b degree of 0 scale of b numerical scale and secondary angle index.

0 scale of ∴ b scale and leading role's degree scale be separated by 10a+b+9b=10 (a+b) or 10a+b+19b=10 (a+2b)

∴ b scale be bound to align cylindrical leading role degree scale 10 (a+b) or 10 (a+2b), and other scale all staggers, promptly can read units is b.

The ∴ 10a+b that takes measurement of an angle can read a from the sensing of 0 scale of secondary angle index, reads b from the alignment of major-minor angle index.

Measure length and line:

There is main length scale (4) in the outside of main scale, so it and general ruler function are as good as.

Claims

1, a kind of multifunctional drawing tool, form by ruler shape main scale, semicircle secondary chi and C shape angle dial, it is characterized in that: semicircle secondary chi places in the main scale open circles, C shape angle dial embeds in the I-shaped groove of semicircle secondary degree dial and with main scale and fixes, breach points to chute, and semicircle secondary chi can unidirectional flexible rotation in main scale open circles and C shape angle dial.

2, multifunctional drawing tool according to claim 1, it is characterized in that: have on the surface, semicircle secondary chi top with 9 of the secondary angle indexs of 9 or 19 degree, one lattice, indicate 0～9 respective value respectively, 36 leading role's degree scales with 10 degree, one lattice are arranged on the C shape angle dial, and indicate respective angles numerical value.

3, multifunctional drawing tool according to claim 1, it is characterized in that: main scale one end is established an open circles, the centre is opened a chute and is communicated with open circles, chute one side is established a unidirectional mechanism and is extended in the open circles, and unidirectional mechanism one end is that 3/4ths circles and open circles keep with one heart, and the main scale outside and chute one side are established the length scale respectively.