CN212098170U

CN212098170U - Middle school triangle with thigh

Info

Publication number: CN212098170U
Application number: CN202020352009.XU
Authority: CN
Inventors: 刘刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-12-08
Anticipated expiration: 2030-03-19

Abstract

The utility model discloses a belong to mathematical tool technical field, specifically be middle school colludes a set square, it includes: first set-square, second set-square, acute angle protractor, scale and magnet, first fretwork portion has been seted up on the first set-square, fixed mounting has the connecting plate on topside one side of first set-square, equal fixed mounting has the cutting on the hypotenuse of first set-square and the both sides edge of connecting plate, second fretwork portion has been seted up on the second set-square, first slot has been seted up on the hypotenuse of second set-square, one side fixed mounting of acute angle protractor has the fixed plate, the topside of fixed plate and the topside of acute angle protractor are located the coplanar, the second slot has all been seted up on the lower side and the arc edge of fixed plate. This middle school colludes thigh set square, measuring function is more, and the result of use is better, makes things convenient for the dismouting, and portable can help just high school and middle-position student's better grasp collude thigh theorem, trigonometric function and radian system.

Description

Middle school triangle with thigh

Technical Field

The utility model relates to a mathematics instrument technical field specifically is middle school colludes a gang set square.

Background

Set squares are common mathematical tools that can be used to draw angles or lines, or to replace graduated scales. The most common set square now is two kinds of right angle set squares, and the three interior angle of a set square is 90 degrees, 45 degrees, and the three interior angle of another set square is 90 degrees, 60 degrees, 30 degrees, and these two kinds of set squares are single as one set of service function, and it is inconvenient to use. The set square is an important mathematical teaching tool and does not play a corresponding role. The pupil can also use the medicine, and the connotation and the extension of the medicine are very insufficient for the use of the junior high school students and the middle-aged students.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a stock triangular plate is colluded to middle school, and measuring function is more, and the result of use is better, makes things convenient for the dismouting, and portable can help just high school and the better grasp of middle-position student and collude thigh theorem, trigonometric function and radian system.

In order to achieve the above object, the utility model adopts the following technical scheme:

middle school colludes thigh set square, it includes: the angle gauge comprises a first triangular plate, a second triangular plate, an acute angle protractor, scales and magnets, wherein the first triangular plate is provided with a first hollowed-out part, a connecting plate is fixedly installed on one side of the top edge of the first triangular plate, inserting strips are fixedly installed on the bevel edge of the first triangular plate and the two side edges of the connecting plate, a second hollowed-out part is arranged on the second triangular plate, a first slot is formed in the bevel edge of the second triangular plate, a fixing plate is fixedly installed on one side of the acute angle protractor, the top edge of the fixing plate and the top edge of the acute angle protractor are positioned on the same plane, second slots are formed in the lower side edge and the arc edge of the fixing plate, the inserting strips are movably connected with the first slot and the second slot, the first triangular plate, the connecting plate, the second triangular plate and the fixing plate form a rectangular structure, and the scales are arranged on the first triangular plate, the second triangular plate and the acute angle protractor, and magnets are fixedly arranged on the lower side of the bevel edge of the second triangular plate, the top end of the connecting plate and one side of the fixing plate.

As the preferred scheme of middle school colludes thigh set-square, wherein: the first hollowed-out part is the same as the first triangular plate in shape, the first hollowed-out part is similar to the first triangular plate in position, the second hollowed-out part is the same as the second triangular plate in shape, and the second hollowed-out part is similar to the second triangular plate in position.

As the preferred scheme of middle school colludes thigh set-square, wherein: the three magnets are all of a circular structure.

As the preferred scheme of middle school colludes thigh set-square, wherein: the first set square is a right-angled triangle, the other two inner angles of the first set square are respectively 30 degrees and 60 degrees, the second set square is an isosceles right-angled triangle, and the acute angle protractor is in a right-angled sector shape.

As the preferred scheme of middle school colludes thigh set-square, wherein: the middle of the arc edge of the acute angle protractor is provided with a groove, and the 1/3 arc length part and the 2/3 arc length part of the acute angle protractor are both provided with grooves.

The utility model has the advantages that: when the device is disassembled, the angles of 30 degrees, 60 degrees and 90 degrees are drawn by the first triangular plate, the angles of 45 degrees and 90 degrees are drawn by the second triangular plate, the angles of acute angles, pi/4, pi/3, pi/6 and the like are measured by the acute angle protractor, the use of students is facilitated, the mastering of the radian system by students is improved, the understanding of the different expressions of the pythagorean theorem and the trigonometric function by the first triangular plate, the corresponding edges of the first hollow part, the second triangular plate and the second hollow part are proportioned and the proportion relation of each edge is improved, the students can more clearly understand the different expressions of the pythagorean theorem and the trigonometric function, the students can generate visual perceptual memory to further understand the pythagorean theorem and the trigonometric function, when the device is not needed to be used, the first slot on the second triangular plate is connected with the insert strip, the second slot on the fixing plate is connected with the insert strip, so that the first triangular plate, the second triangular plate and the acute angle protractor are, magnet adsorbs each other simultaneously and prevents the separation, and this middle school colludes a set square, and measuring function is more, and the result of use is better, makes things convenient for the dismouting, and portable can help just high school and middle-position student's better grasp collude thigh theorem, trigonometric function and radian system.

Drawings

FIG. 1 is a front view of the present invention in combination;

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

FIG. 3 is a front view of a second set square of the present invention;

fig. 4 is a front view of the first set square of the present invention.

In the figure: 100 first set square, 110 first hollow part, 120 connecting plate, 130 cutting, 200 second set square, 210 second hollow part, 220 first slot, 300 acute angle protractor, 310 fixing plate, 320 second slot, 400 scale and 500 magnet.

Detailed Description

The invention is further explained below with reference to the drawings:

the utility model provides a middle school colludes a thigh set square, measuring function is more, and the result of use is better, makes things convenient for the dismouting, and portable can help the better grasp of junior high school and middle-position student to collude thigh theorem, trigonometric function and radian system, please refer to fig. 1, fig. 2, fig. 3 and fig. 4, include: a first set square 100, a second set square 200, an acute angle protractor 300, a scale 400 and a magnet 500;

referring to fig. 1, 2, 3 and 4 again, a first hollowed-out portion 110 is formed on the first triangle 100, a connecting plate 120 is fixedly installed on one side of the top edge of the first triangle 100, inserting strips 130 are fixedly installed on the bevel edge of the first triangle 100 and the two side edges of the connecting plate 120, a second hollowed-out portion 210 is formed on the second triangle 200, a first slot 220 is formed on the bevel edge of the second triangle 200, a fixing plate 310 is fixedly installed on one side of the acute angle protractor 300, the top edge of the fixing plate 310 and the top edge of the acute angle protractor 300 are located on the same plane, second slots 320 are formed on the lower side edge and the arc edge of the fixing plate 310, the inserting strips 130 are movably connected with the first slot 220 and the second slot 320, the first triangle 100, the connecting plate 120, the second triangle 200 and the fixing plate 310 form a rectangular structure, scales 400 are respectively arranged on the first triangle 100, the second triangle 200 and the acute angle protractor 300, magnets 500 are fixedly mounted on the lower side of the bevel edge of the second triangular plate 200, the top end of the connecting plate 120 and one side of the fixing plate 310, specifically, the first hollow part 110 is formed on the first triangular plate 100, the connecting plate 120 is integrally formed on one side of the top edge of the first triangular plate 100, the inserting strips 130 are integrally formed on the bevel edge of the first triangular plate 100 and the two side edges of the connecting plate 120, and the second triangular plate 200 is provided with a second magnetTwo fretwork portions 210, first slot 220 has been seted up on the hypotenuse of second set-square 200, one side integrated into one piece of acute angle protractor 300 has fixed plate 310, the topside of fixed plate 310 and the topside of acute angle protractor 300 are located the coplanar, second slot 320 has all been seted up on the lower side of fixed plate 310 and the arc edge, cutting 130 inserts and is connected with first slot 220 and second slot 320, first set-square 100, connecting plate 120, second set-square 200 and fixed plate 310 constitute the rectangle structure, first set-square 100, all be provided with scale 400 on second set-square 200 and the acute angle protractor 300, the hypotenuse downside of second set-square 200, the top of connecting plate 120 and one side of fixed plate 310 are marked and are connected with magnet 500, the first set-square 100 downside colludes the theorem a, the downside of first set-square 100 is marked and²+b²＝c² 1²+√3²＝2². The triangular function sin45 ° -1/√ 2cos π/4 √ 2/2sin60 ° -3/2 sin30 ° -1/2 is marked on the connecting plate 120, the first triangle 100 is used to draw angles of 30 degrees, 60 degrees and 90 degrees and to detect the pythagorean theorem and the triangular function by students conveniently, the first hollow part 110 is used to pick up the first triangle 100 conveniently, the connecting plate 120 is used to fix the insert bar 130, the insert bar 130 is used to be inserted into the first slot 220 and the second slot 320, the first triangle 100, the connecting plate 120, the second triangle 200 and the fixing plate 310 are marked, the pythagorean theorem a on the hypotenuse of the second triangle 200 is marked on the connecting plate 120²+b²＝c² 1² +1²＝√2²The second triangular plate 200 is used for conveniently drawing angles of 45 degrees and 90 degrees and is convenient for students to detect the pythagorean theorem and trigonometric function, the second hollow-out part 210 is used for conveniently taking up the second triangular plate 200, the first slot 220 is used for conveniently inserting the insert 130 so as to connect the second triangular plate 200 with the connecting plate 120, the lower radius of the acute angle protractor 300 is marked with the radian of arc length/radius of L/R, the acute angle protractor 300 is used for conveniently measuring acute angles, pi/4, pi/3, pi/6 and the like, the fixing plate 310 is used for arranging the second slot 320, the second slot 320 is used for conveniently inserting the insert 130 so as to connect the fixing plate 310, the first triangular plate 100 and the connecting plate 120, the scale 400 is used for conveniently measuring the lengths and the angles, and the magnet 500 is used for preventing all parts of the device from automatically scattering;

when the device is used in detail, when the device is disassembled, the first triangle 100 draws angles of 30 degrees, 60 degrees and 90 degrees, the second triangle 200 draws angles of 45 degrees and 90 degrees, the acute angle protractor 300 measures the acute angles, pi/4, pi/3, pi/6 and the like, so that the use of students is facilitated, the mastery of the radian system by the students is improved, moreover, the understanding of the students on different expressions of the pythagorean theorem and the trigonometric function is clearer by the proportion of the corresponding edges of the first triangle 100, the first hollowed-out part 110, the second triangle 200 and the second hollowed-out part 210 and the proportion relation of the edges, the students can generate visual perceptual memory, further understand the pythagorean theorem and the trigonometric function, when the device is not used, the first slot 220 on the second triangle 200 is connected with the insert 130, and the second slot 320 on the fixing plate 310 is connected with the insert 130, thereby combining the first triangle 100, the second triangle 200 and the acute angle protractor 300 as a whole while the magnets 500 are attracted to each other to prevent separation.

Referring to fig. 1, 3 and 4 again, in order to make the first hollow-out portion 110 and the second hollow-out portion 210 draw smaller triangles rapidly, the first hollow-out portion 110 has the same shape as the first triangle 100, the first hollow-out portion 110 is similar to the first triangle 100, the second hollow-out portion 210 has the same shape as the second triangle 200, and the second hollow-out portion 210 is similar to the second triangle 200.

Referring again to fig. 1, 2, 3 and 4, in order to make the three magnets 500 more closely attached, the three magnets 500 are all circular.

Referring to fig. 1, 2, 3 and 4 again, in order to enable the first triangle 100, the second triangle 200 and the acute angle protractor 300 to perform corresponding functions, the first triangle 100 is a right triangle, the other two internal angles of the first triangle 100 are 30 degrees and 60 degrees respectively, the second triangle 200 is an isosceles right triangle, and the acute angle protractor 300 is a right sector.

Referring to fig. 2 again, in order to measure pi/4, pi/3, pi/6, etc., a groove is formed in the middle of the arc edge of the acute angle protractor, and the 1/3 arc length and the 2/3 arc length of the acute angle protractor are both provided with grooves, which can accommodate the pen point.

Claims

1. Middle school colludes thigh set-square, its characterized in that includes: the novel angle gauge comprises a first triangular plate (100), a second triangular plate (200), an acute angle protractor (300), scales (400) and magnets (500), wherein a first hollowed-out part (110) is formed in the first triangular plate (100), a connecting plate (120) is fixedly mounted on one side of the top edge of the first triangular plate (100), inserting strips (130) are fixedly mounted on the bevel edge of the first triangular plate (100) and the two side edges of the connecting plate (120), a second hollowed-out part (210) is formed in the second triangular plate (200), a first slot (220) is formed in the bevel edge of the second triangular plate (200), a fixing plate (310) is fixedly mounted on one side of the acute angle protractor (300), the top edge of the fixing plate (310) and the top edge of the acute angle protractor (300) are located on the same plane, and second slots (320) are formed in the lower side and the arc edge of the fixing plate (310), the utility model discloses a set up magnet, including cutting, inserting strip (130), first set-square (100), connecting plate (120), second set-square (200) and fixed plate (310), all be provided with scale (400) on first set-square (100), second set-square (200) and acute angle protractor (300), the equal fixed mounting in one side of the hypotenuse downside of second set-square (200), the top of connecting plate (120) and fixed plate (310) has magnet (500), first slot (220) and second slot (320) of cutting swing joint, first set-square (100), connecting plate (120), second set-square (200) and fixed plate (310).

2. The middle-school triangular plate with strands according to claim 1, wherein the first hollowed-out portion (110) is the same as the first triangular plate (100), the first hollowed-out portion (110) is similar to the first triangular plate (100), the second hollowed-out portion (210) is the same as the second triangular plate (200), and the second hollowed-out portion (210) is similar to the second triangular plate (200).

3. The middle school collunarium trigonometry as recited in claim 1, wherein all three magnets (500) are of circular configuration.

4. The medium school colluding-strand triangular plate according to claim 1, characterized in that the first triangular plate (100) is a right triangle, and the other two inner angles of the first triangular plate (100) are 30 degrees and 60 degrees, respectively, the second triangular plate (200) is an isosceles right triangle, and the acute angle protractor (300) is a right sector.

5. The middle school colluding strand triangular plate according to claim 1, wherein the arc edge of the acute angle protractor (300) is provided with a groove in the middle, and the 1/3 arc length and the 2/3 arc length of the acute angle protractor (300) are both provided with grooves.