CN220594492U

CN220594492U - Device for trisecting angles

Info

Publication number: CN220594492U
Application number: CN202321687408.1U
Authority: CN
Inventors: 来庆军
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-06-29
Filing date: 2023-06-29
Publication date: 2024-03-15
Anticipated expiration: 2033-06-29

Abstract

The utility model relates to a device for trisecting angles, which comprises two angle edge rules, wherein one ends of the two angle edge rules are hinged to a first rotating shaft, each angle edge rule is also hinged with a connecting rod through a second rotating shaft, and the other ends of the two connecting rods are hinged to a third rotating shaft; the distance between the first rotating shaft and the second rotating shaft on the two angle square is equal, and the distance between the second rotating shaft and the third rotating shaft on the two connecting rods is equal; the first rotating shaft is also hinged with a middle ruler and a sliding ruler; the third rotating shaft is in sliding connection with the middle ruler, and the axes of the first rotating shaft and the third rotating shaft are both positioned on the central line of the middle ruler; the top end of the sliding rule is provided with a sliding block, the distance between the sliding block and the first rotating shaft is adjustable, the sliding block is provided with a reference edge, the length of the reference edge is consistent with the width of the sliding rule, and the perpendicular foot from the first rotating shaft to the reference edge coincides with the midpoint of the reference edge. The utility model can realize trisection at any angle, has simple structure and has the advantage of simple and convenient operation.

Description

Device for trisecting angles

Technical Field

The utility model belongs to the technical field of drawing devices, and particularly relates to a device for trisecting angles.

Background

In the industry related to graphic design, halving of any angle in a plane is encountered during drawing. The bisection of the angle can be realized by a simpler geometric method, and even-number property bisection of the angle, such as quarter, eighth and the like can be further realized on the basis of the geometric method. But is more difficult to achieve if an odd property of the aliquots, such as the triplets, is desired. Some devices capable of realizing trisection of angles are disclosed in the prior art, such as patent 01226074.6, wherein angle dividing lines are determined by adopting angle dividing squares, and the devices adopt a plurality of angle dividing squares and connecting rod structures. With respect to this solution, the present application proposes a device of trisection angle that is simpler in construction.

Disclosure of Invention

In order to achieve the technical purpose of the application, the specific scheme of the utility model is as follows:

the device for trisecting the angles comprises two angle edge rules, wherein one ends of the two angle edge rules are hinged to a first rotating shaft, each angle edge rule is also hinged with a connecting rod through a second rotating shaft, and the other ends of the two connecting rods are hinged to a third rotating shaft; the distance between the first rotating shaft and the second rotating shaft on the two angle square is equal, and the distance between the second rotating shaft and the third rotating shaft on the two connecting rods is equal; the first rotating shaft is also hinged with a middle ruler and a sliding ruler; the third rotating shaft is in sliding connection with the middle ruler, and the axes of the first rotating shaft and the third rotating shaft are both positioned on the central line of the middle ruler; the top end of the sliding rule is provided with a sliding block, the distance between the sliding block and the first rotating shaft is adjustable, the sliding block is provided with a reference edge, the length of the reference edge is consistent with the width of the sliding rule, and the perpendicular foot from the first rotating shaft to the reference edge coincides with the midpoint of the reference edge.

The principle of the scheme is that when the chord lengths are equal, the corresponding central angles are also equal. The widths of the reference edge and the middle ruler on the sliding block are equal, and the positions of the three bisectors are confirmed cooperatively by the reference edge, the middle ruler and the angle edge ruler.

Further, a sliding groove is formed in the center line of the middle ruler, and the third rotating shaft is arranged in the sliding groove in a sliding mode.

Further, the sliding ruler comprises a sliding sleeve, a sliding rod is arranged on the sliding sleeve in a sliding mode, the sliding sleeve is connected to the top end of the sliding rod, and the sliding sleeve is hinged to the first rotating shaft.

Further, the slider is the cuboid, and the slide bar is connected in the center department of slider perpendicularly, and the both sides lower part of slider is equipped with the draw-in groove, and the draw-in groove is used for with angle square and middle chi sliding fit, the base of slider is the benchmark limit.

The utility model can realize trisection of any angle, positions the trisection line of the angle through the sliding rule and the middle rule, has simpler structure and has the advantage of simple and convenient operation.

Drawings

The utility model will be further described with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic cross-sectional view of a slider in accordance with the present utility model.

Fig. 3 is a schematic diagram of the principle of the utility model in terms of trisection.

Detailed Description

The present utility model will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the utility model are shown, and in which embodiments of the utility model are shown. All other embodiments, modifications, equivalents, improvements, etc., which are apparent to those skilled in the art without the benefit of this disclosure, are intended to be included within the scope of this utility model.

Example 1

As shown in fig. 1 and 2, a device for trisecting angles includes two angle square 1, one end of each angle square 1 is hinged to a first rotating shaft 10, each angle square is further hinged with a connecting rod 2 through a second rotating shaft 20, and the other ends of the two connecting rods 2 are hinged to a third rotating shaft 30; the distance between the first rotating shaft 10 and the second rotating shaft 20 on the two angle square is equal, and the distance between the second rotating shaft 20 and the third rotating shaft 30 on the two connecting rods is equal; the first rotating shaft is also hinged with a middle ruler 3 and a sliding ruler 4; the third rotating shaft 30 is in sliding connection with the middle ruler 3, and the axes of the first rotating shaft and the third rotating shaft are both positioned on the central line of the middle ruler; the top of the slide rule 4 is provided with a slide block 5, the distance between the slide block and the first rotating shaft is adjustable, the slide block is provided with a reference edge 6, the length of the reference edge is consistent with the width of the slide rule, and the perpendicular foot from the first rotating shaft to the reference edge coincides with the midpoint of the reference edge.

The angle square and the middle square are rectangular structures and are provided with straight line sides. The three-mean line may be determined from the intersection of the reference edge and the side edge of the medial ruler.

Specifically, the central line department of middle chi is equipped with spout 7, and the third pivot slides and sets up in the spout.

In other embodiments, other sliding connection structures may be used to achieve movement of the third shaft along the intermediate scale, such as a sliding sleeve structure.

In addition, the slide rule comprises a sliding sleeve, a sliding rod is arranged on the sliding sleeve in a sliding mode, the sliding sleeve is connected to the top end of the sliding rod, and the sliding sleeve is hinged to the first rotating shaft. The sliding rod can move along the sliding sleeve to realize the extension and retraction of the sliding block.

In other embodiments, the slide rule may also be configured as a telescoping rod.

In this embodiment, the slider is the cuboid, and the slide bar is perpendicular to the center department of slider, and the both sides lower part of slider is equipped with the draw-in groove, and the draw-in groove is used for with angle square and middle chi sliding fit, the base of slider is the benchmark limit.

As shown in figure 3, the operation method is that the two sides of the angle AOD needing to draw the three-bisector are aligned with the inner side of the angle edge of the device, the sliding block is moved to enable the two sides of the sliding block to be in contact with the angle edge and the middle ruler, at the moment, the bottom edge (reference edge) of the sliding block is intersected with the angle edge and the middle ruler, the intersection point of the sliding block and the middle ruler is marked as B, and the connection OB and OB are the three-bisectors of the angle AOD.

Claims

1. A device for trisecting angles, characterized by: the angle square comprises two angle squares, wherein one ends of the two angle squares are hinged to a first rotating shaft, each angle square is also hinged with a connecting rod through a second rotating shaft, and the other ends of the two connecting rods are hinged to a third rotating shaft; the distance between the first rotating shaft and the second rotating shaft on the two angle square is equal, and the distance between the second rotating shaft and the third rotating shaft on the two connecting rods is equal; the first rotating shaft is also hinged with a middle ruler and a sliding ruler; the third rotating shaft is in sliding connection with the middle ruler, and the axes of the first rotating shaft and the third rotating shaft are both positioned on the central line of the middle ruler; the top end of the sliding rule is provided with a sliding block, the distance between the sliding block and the first rotating shaft is adjustable, the sliding block is provided with a reference edge, the length of the reference edge is consistent with the width of the sliding rule, and the perpendicular foot from the first rotating shaft to the reference edge coincides with the midpoint of the reference edge.

2. The trisection angle apparatus of claim 1, wherein: the central line department of middle chi is equipped with the spout, and the third pivot slides and sets up in the spout.

3. The trisection angle apparatus of claim 1, wherein: the sliding ruler comprises a sliding sleeve, a sliding rod is arranged on the sliding sleeve in a sliding mode, the sliding block is connected to the top end of the sliding rod, and the sliding sleeve is hinged to the first rotating shaft.

4. A trisection angle apparatus as claimed in claim 3, wherein: the sliding block is a rectangular body, the sliding rod is vertically connected to the center of the sliding block, clamping grooves are formed in the lower portions of two sides of the sliding block and are used for being in sliding fit with the angle square and the middle square, and the bottom edge of the sliding block is a reference edge.