CN201449229U

CN201449229U - Multipurpose protractor assembly

Info

Publication number: CN201449229U
Application number: CN2009200603249U
Authority: CN
Inventors: 常碾甫
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-13
Filing date: 2009-07-13
Publication date: 2010-05-05
Anticipated expiration: 2019-07-13

Abstract

The utility model relates to a multipurpose protractor assembly comprising a protractor main body and an accessory. Vernier scales are engraved on the accessory corresponding to the scales on the protractor main body. Concave rails or ribs for the accessory to move are engraved on the protractor main body, and concave rails or ribs corresponding to the rails or the ribs on the main body are arranged on the accessory. The multipurpose protractor assembly can be used for the accurate measurement of length and angles and the direct measurement of the trigonometric functions of angles.

Description

A kind of multiple use angle protractor assembly

Technical field

The utility model relates to surveying instrument, specifically is a kind of multiple use angle protractor assembly.

Background technology

Existing protractor function is comparatively single, generally only have measurement of angle function and length measurement function, and measuring accuracy is not enough.

The utility model content

The utility model provides a kind of multiple use angle protractor assembly at the above-mentioned defective of prior art, to improve measuring accuracy and to expand its function.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

A kind of multiple use angle protractor assembly, comprise protractor main body and annex, be carved with the vernier graduation corresponding to protractor main body scale on the annex, be provided with the recessed rail that moves for annex or protruding stupefied along protractor main body high scale, annex is provided with the protruding stupefied or recessed rail with main body fovea superior rail or protruding stupefied coupling.

Preferably, described annex comprises along the linear measure longimetry vernier of protractor modal length scale slip and the measurement of angle vernier that slides along protractor subject angle scale.

Preferably, be carved with the scale of 20 five equilibriums on the described linear measure longimetry vernier, other is provided with centimeter scale, and is provided with aperture corresponding to integer centimeter scale place.

Preferably, be carved with the scale of 20 five equilibriums on the described measurement of angle vernier.

Preferably, described linear measure longimetry vernier is a rectangle, and the protruding stupefied or recessed rail of its setting is perpendicular to the long limit of rectangle.

Preferably, cosine value is carved with on described main body base also correspondence, is carved with sine value on the straight line perpendicular to the base.

Preferably, the described main body lower left corner is provided with the Ka Zui of protrusion, and card mouth inner side edge becomes 90 ° with the main body base.

Preferably, right-angle triangle and/or the isosceles triangle that forms 30 ° of angles emptied at the main body middle part.

As can be seen from the above technical solutions, the utility model is used in combination mutually by main body and annex, can access more accurate angle and measurement of length data, and auxiliary sine value and the cosine value that is directly calculated angle by annex.The utility model also makes it have the function of angle square by vertical Ka Zui is set in the main body lower left corner.In sum, the utility model is easy to use, degree of accuracy is high, diverse in function, can adopt acrylic board to make, and production requirement is low, and is cheap.

Description of drawings

Fig. 1 is the utility model main body one example structure diagrammatic sketch;

Fig. 2 is the another example structure diagrammatic sketch of the utility model main body;

Fig. 3 is the utility model linear measure longimetry cursor structure diagrammatic sketch;

Fig. 4 is the utility model measurement of angle cursor structure diagrammatic sketch.

Embodiment

Below in conjunction with embodiment the utility model is described in further detail.

Referring to shown in Figure 1, shown in the figure be the selected example structure of the utility model main body, this only for the usefulness of explanation, is not subjected to the restriction of this structure in patented claim.

Main body be circular 1/4th in addition the Ka Zui in the lower left corner form, main body two straight flanges are carved with centimeter scale, sinusoidal scale, cosine scale respectively, angle index is carved with on the arc limit, body interior is emptied the formation isosceles triangle, isosceles triangle isosceles limit is provided with the scale that becomes 60 ° of angles with another isosceles limit, two right-angle sides are provided with protruding stupefiedly 11 on the main body, and the arc limit is provided with groove 12.

Again referring to shown in Figure 3, linear measure longimetry vernier integral body is rectangle, it is provided with 20 evenly divideds corresponding with the main body scale, other is provided with centimeter scale, and the place is provided with aperture 32 corresponding to the integer centimeter scale, evenly divided central authorities are straight-line groove 31, and groove makes the linear measure longimetry vernier along the protruding stupefied slip on main body two right-angle sides by this, realize the accurate measuring distance of vernier.Because the linear measure longimetry vernier is rectangular, its long limit can be used for the accurate Calculation of offset of sinusoidal, cosine value in addition.The aperture 32 that is provided with on the linear measure longimetry vernier can be used for picture circle, the effect of serving as compasses.After the utility model linear measure longimetry vernier embeds protruding stupefied 11 on the main body, this linear measure longimetry vernier can also be combined with angle square and form vernier caliper, implement the accurate measurement of space object length.

Again referring to shown in Figure 4, the measurement of angle vernier is the little circular portion that utilizes after annular is cut on the two radius limit, and be provided with the protruding position 41 corresponding with groove on the main body arc limit, it is provided with 20 evenly divideds corresponding with the main body scale, can cooperate the angle index on the main body arc limit to carry out the accurate measurement of angle.

Referring to shown in Figure 2, it is the another example structure diagrammatic sketch of the utility model main body, and its integral body is a semicircle, and the lower left corner has the Ka Zui of protrusion, and card mouth inner side edge is vertical with the main body base.The main body both sides are emptied respectively an isosceles triangle and the right-angle triangle with 30 ° of angles are set.The main body base has been portrayed the inside scale and cosine scale respectively, portrayal has sinusoidal scale on the perpendicular bisector of base, parallel place with scale mark is provided with protruding stupefied 21 respectively on base, the perpendicular bisector, protruding by this stupefied 21 cooperate with the linear measure longimetry vernier, make the linear measure longimetry vernier along the protruding stupefied slip on the main body, carry out distance and accurately measure with sine, cosine value is accurately measured and the accurate measurement of the space object length of vernier caliper.Main body arc limit is 180 ° of angles of portrayal evenly, and are provided with groove 22 on the arc limit, and the protruding position tabling on groove and the measurement of angle vernier makes its accurate mutually location by this.Also portrayed the corresponding relation figure of angle and trigonometric function value on the left side of protractor, and the trigonometric function value of 0 °, 90 °, 180 °, 270 ° correspondence, make the record carrier of the utility model as an image, the student is kept firmly in mind.

Above-mentioned specific embodiment is purpose, feature and the effect that is used for describing in detail this creation, for people's bodyguard of being familiar with this type of skill, according to the above description, may do partly change and modification to this specific embodiment, its essence does not detach the spiritual category person of this creation, all should be included in the claim of this case suitable first Chen Ming.

Claims

1. multiple use angle protractor assembly, it is characterized in that: comprise protractor main body and annex, be carved with vernier graduation on the annex corresponding to protractor main body scale, be provided with the recessed rail that moves for annex or protruding stupefied along protractor main body high scale, annex is provided with the protruding stupefied or recessed rail with main body fovea superior rail or protruding stupefied coupling.

2. multiple use angle protractor assembly according to claim 1 is characterized in that: described annex comprises along the linear measure longimetry vernier of protractor modal length scale slip and the measurement of angle vernier that slides along protractor subject angle scale.

3. multiple use angle protractor assembly according to claim 2 is characterized in that: be carved with the scale of 20 five equilibriums on the described linear measure longimetry vernier, other is provided with centimeter scale, and is provided with aperture corresponding to integer centimeter scale place.

4. multiple use angle protractor assembly according to claim 2 is characterized in that: the scale that is carved with 20 five equilibriums on the described measurement of angle vernier.

5. multiple use angle protractor assembly according to claim 2 is characterized in that: described linear measure longimetry vernier is a rectangle, and the protruding stupefied or recessed rail of its setting is perpendicular to the long limit of rectangle.

6. multiple use angle protractor assembly according to claim 5 is characterized in that: cosine value is carved with on described main body base also correspondence, is carved with sine value on the straight line perpendicular to the base.

7. according to the arbitrary described multiple use angle protractor assembly of claim 1～6, it is characterized in that: the described main body lower left corner is provided with the Ka Zui of protrusion, and card mouth inner side edge becomes 90 ° with the main body base.

8. according to the arbitrary described multiple use angle protractor assembly of claim 1～6, it is characterized in that: right-angle triangle and/or the isosceles triangle that forms 30 ° of angles emptied at the main body middle part.