CN209971993U

CN209971993U - Triangle angle-changing drawing rule

Info

Publication number: CN209971993U
Application number: CN201920668095.2U
Authority: CN
Inventors: 孙彦全; 马秀会; 朱蕴; 张海军
Original assignee: Sun Yanquan; Heilongjiang Nongken Vocational College
Current assignee: Sun Yanquan; Heilongjiang Nongken Vocational College
Priority date: 2019-05-10
Filing date: 2019-05-10
Publication date: 2020-01-21
Anticipated expiration: 2029-05-10

Abstract

A triangle angle-variable drawing rule relates to a triangle rule structure with a changeable angle. Comprises a right-angle base ruler, a longitudinal slide ruler, a transverse slide ruler and a bevel ruler; the two ends of the bevel edge ruler are arranged below the tail ends of the longitudinal edge sliding ruler and the transverse edge sliding ruler and are hinged with the end parts of the longitudinal edge sliding ruler and the transverse edge sliding ruler; the angle gauge is of a fan-shaped structure and is positioned on the tail end of the transverse sliding ruler, and the fan-shaped circle center of the angle gauge is superposed with the circle center of the hinged shaft hole of the transverse sliding ruler; the upper surface of the bevel edge ruler is provided with an angle line which is positioned below the protractor. The problem of need measure with other angle rulers when current right angle set square angle regulation, measure that the angle does not accord and still need readjustment, operate very loaded down with trivial details is solved.

Description

Triangle angle-changing drawing rule

Technical Field

The utility model relates to a drawing device, concretely relates to can change angle's set square structure.

Background

The common manual drawing tool comprises a bevel edge set square, compasses, a drawing template, a T-square or a straight square and the like. In design and drawing, almost no set square is available, and the existing set square comprises a 45-degree set square and 30 and 60-degree set squares, and the angle is fixed and cannot be changed. Chinese patent document CN108382103A discloses an automatic changing teaching set square, which can freely change the shape of the teaching set square and control the size of the drawn triangle. The patent set square is not a right-angle set square, and when the right-angle set square is used, one angle needs to be forcibly fixed, so that the operation is inconvenient. In addition, the triangular ruler of the patent can adjust the shape of the triangular ruler according to the side length, namely the angle is adjusted according to the length of three sides, the three side lengths and other two angle degrees need to be changed when the degree of one angle is adjusted, and the degree of a measuring angle of a graph needs to be drawn when the back angle is adjusted, the measured back angle is not consistent with the measured back angle and needs to be adjusted again, so the operation is complicated; in addition, three sides of the patent set square are movable sides, and when one side is adjusted, the three sides can be adjusted, so that the operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a triangle angle-variable drawing rule, which solves the first problem that the two acute angles of the existing right-angle triangle rule can not adjust the angle; the second problem solved by the utility model is that other angle rulers are needed to measure when the angle of the triangle ruler of the background patent is adjusted, the measured angle is inconsistent and needs to be adjusted again, and the operation is very complicated; the utility model provides a third problem be that the three limit of background art patent set square is movable limit, every limit of adjusting, three limit all need be adjusted, the inconvenient scheduling problem of operation.

In order to solve the above problem, the utility model adopts the following technical scheme: the triangular variable angle drawing ruler comprises a right angle base ruler, a longitudinal side sliding ruler, a transverse side sliding ruler and a bevel side ruler; the right-angle base ruler is of a right-angle structure, dovetail guide rails are arranged on two straight edges of the right-angle base ruler, and dovetail guide grooves are arranged below the longitudinal side sliding ruler and the transverse side sliding ruler; the longitudinal edge sliding ruler and the transverse edge sliding ruler are respectively arranged on the two straight edges of the right-angle base ruler, and the dovetail guide grooves are in sliding fit with the dovetail guide rails; the two ends of the bevel edge ruler are arranged below the tail ends of the longitudinal edge sliding ruler and the transverse edge sliding ruler and are hinged with the end parts of the longitudinal edge sliding ruler and the transverse edge sliding ruler; the angle gauge is positioned on the tail end of the transverse sliding rule, and the sector circle center of the angle gauge is superposed with the circle center of the hinged shaft hole of the transverse sliding rule; the upper surface of the bevel edge ruler is provided with an angle line which is positioned below the protractor, and the angle line is positioned on a connecting line of the centers of the hinge shaft holes at the two ends of the bevel edge ruler.

The utility model discloses the advantage: the angle regulation of right angle set square is realized through two right-angle sides of set square, adopts the protractor directly to read the angle value, once adjusts the angle that can reach needs, and is easy and simple to handle, adjusts the back and uses the bolt fastening, facilitates the use. The utility model discloses compare with the set square of background art patent, it is more convenient to adjust, adopts the protractor directly to read the angle, and angle modulation once can reach the requirement, avoids repeatedly carrying out the problem of angle modulation.

Drawings

Fig. 1 is a top view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a schematic view of a right angle base rule configuration;

FIG. 4 is a cross-sectional view A-A of FIG. 3;

FIG. 5 is a schematic view of a longitudinal edge runner;

FIG. 6 is a cross-sectional view B-B of FIG. 5;

FIG. 7 is a schematic view of a cross slide;

figure 8 is a schematic view of a hypotenuse construction.

The symbols in the drawings illustrate that: the device comprises a right-angle base ruler 1, a dovetail guide rail 1-1, a longitudinal edge sliding ruler 2, a dovetail guide groove 2-1, a transverse edge sliding ruler 3, a dovetail guide groove 3-1, a bevel edge ruler 4, an angle line 4-1, a protractor 5 and a fastening bolt 6.

Detailed Description

The present invention will be described in detail with reference to the preferred embodiments.

As shown in fig. 1-8, the triangle variable angle drawing ruler comprises a right angle base ruler 1, a longitudinal slide ruler 2, a transverse slide ruler 3 and a hypotenuse ruler 4; the right-angle base ruler 1 is of a right-angle structure, dovetail guide rails 1-1 are arranged on two straight edges of the right-angle base ruler 1, the longitudinal side sliding ruler 2 and the transverse side sliding ruler 3 are of straight ruler structures, and dovetail guide grooves are arranged below the longitudinal side sliding ruler 2 and the transverse side sliding ruler 3; the longitudinal edge sliding ruler 2 and the transverse edge sliding ruler 3 are respectively arranged on two straight edges of the right-angle base ruler 1, and the dovetail guide groove 2-1 is in sliding fit with the dovetail guide rail 1-1; the bevel edge ruler 4 is of a straight ruler structure, and scale marks are arranged on the bevel edge ruler 4; the two ends of the bevel edge ruler 4 are arranged below the tail ends of the longitudinal edge sliding ruler 2 and the transverse edge sliding ruler 3 and are hinged with the end parts of the longitudinal edge sliding ruler 2 and the transverse edge sliding ruler 3. The right-angle base ruler 1 and the longitudinal sliding ruler 2 and the transverse sliding ruler 3 form two right-angle sides of the set square, the bevel side ruler 4 is a bevel side of the set square, the transverse sliding ruler 3 is pulled out during use, the bevel side ruler 4 is turned anticlockwise, and the longitudinal sliding ruler 2 contracts along the dovetail guide rail 1-1, so that the acute angle of the right-angle set square can be changed.

The utility model discloses still include transparent protractor 5, protractor 5 is fan-shaped structure, and protractor 5 arc limit department has angle scale mark, and protractor 5 is located the 3 terminal higher authorities of horizontal limit slide rule, and protractor 5 and horizontal limit slide rule 3 structure as an organic whole, and protractor 5 and horizontal limit slide rule 3 are made by transparent plastic. The sector circle center of the protractor 5 is superposed with the circle center of the hinged shaft hole of the horizontal sliding ruler 3; an angle line 4-1 is arranged on the upper surface of the bevel edge ruler 4, the angle line 4-1 is positioned below the protractor 5, and the angle line 4-1 is positioned on a connecting line of the centers of the hinge shaft holes at the two ends of the bevel edge ruler 4. When the angle gauge is used, the angle is adjusted by rotating the bevel edge ruler 4 and pushing and pulling the longitudinal edge sliding ruler 2 and the transverse edge sliding ruler 3, and the angle is directly read through the angle line 4-1 and the angle scale line on the angle gauge 5 during adjustment.

The horizontal sliding ruler 3 is hinged to the right-angle base ruler 1 through the fastening bolt 6, the lower end of the fastening bolt 6 is in threaded connection with a threaded hole in the right-angle base ruler 1, the screw rod portion in the middle of the fastening bolt 6 is in clearance fit with the hinged shaft hole of the horizontal sliding ruler 3, and the nut of the fastening bolt 6 is pressed on the upper surface of the horizontal sliding ruler 3. When the adjusted angle meets the requirement, the fastening bolt 6 is screwed, and the nut compresses the horizontal sliding ruler 3 to fix the angle.

Claims

1. The triangular variable angle drawing ruler comprises a right angle base ruler, a longitudinal side sliding ruler, a transverse side sliding ruler and a bevel side ruler; the right-angle base ruler is of a right-angle structure, dovetail guide rails are arranged on two straight edges of the right-angle base ruler, and dovetail guide grooves are arranged below the longitudinal side sliding ruler and the transverse side sliding ruler; the longitudinal edge sliding ruler and the transverse edge sliding ruler are respectively arranged on the two straight edges of the right-angle base ruler, and the dovetail guide grooves are in sliding fit with the dovetail guide rails; the two ends of the bevel edge ruler are arranged below the tail ends of the longitudinal edge sliding ruler and the transverse edge sliding ruler and are hinged with the end parts of the longitudinal edge sliding ruler and the transverse edge sliding ruler; the angle gauge is characterized by further comprising a transparent angle gauge, the angle gauge is of a fan-shaped structure, angle scale lines are arranged at the arc edge of the angle gauge, the angle gauge is located above the tail end of the transverse sliding ruler, and the fan-shaped circle center of the angle gauge is overlapped with the circle center of the hinged shaft hole of the transverse sliding ruler; the upper surface of the bevel edge ruler is provided with an angle line which is positioned below the protractor, and the angle line is positioned on a connecting line of the centers of the hinge shaft holes at the two ends of the bevel edge ruler.

2. The angle-variable drawing rule as claimed in claim 1, wherein the lateral slide rule is hinged to the right-angle base rule by means of a fastening bolt, the lower end of the fastening bolt is screwed into a threaded hole in the right-angle base rule, a shank portion of the middle portion of the fastening bolt is in clearance fit with a hinged shaft hole of the lateral slide rule, and a nut of the fastening bolt is pressed against the upper surface of the lateral slide rule.