CN216101232U

CN216101232U - Multifunctional ruler for mathematics teaching

Info

Publication number: CN216101232U
Application number: CN202121907383.2U
Authority: CN
Inventors: 邓丽霞
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-16
Filing date: 2021-08-16
Publication date: 2022-03-22
Anticipated expiration: 2031-08-16

Abstract

The utility model discloses a multifunctional ruler for mathematical education, which comprises a vertical column, an auxiliary drawing device and an angle measuring device, wherein the right side surface of the vertical column is fixedly connected with the left side surface of the vertical column, the upper surface of the vertical column is provided with a telescopic groove, the inner wall of the telescopic groove is connected with an auxiliary strip in a sliding manner, the right side surface of the auxiliary strip and the upper surface of the vertical column are both rotatably connected with a connecting column through a rotating shaft, the right end of the connecting column at the left side is fixedly provided with a telescopic sleeve, and the surface of the connecting column at the right side is connected with the inner wall of the telescopic sleeve in a sliding manner. This multi-functional chi utensil is used in mathematical education takes the back out the auxiliary strip from flexible inslot completely, and the total length of vertical mast and auxiliary strip equals the length of vertical mast, with the auxiliary strip retraction flexible groove back, the length ratio of vertical mast and vertical mast is the ratio of two right-angle sides of ordinary right triangle to make this chi utensil can switch the form between isosceles right triangle and ordinary right triangle, reduced the chi utensil figure that the mr need carry.

Description

Multifunctional ruler for mathematics teaching

Technical Field

The utility model relates to the technical field of teaching tools, in particular to a multifunctional ruler for mathematical teaching.

Background

In the process of mathematical education, a teacher often needs to slide out a common right-angled triangle and an isosceles right-angled triangle on a blackboard.

Because the common right-angle triangle is mostly combined by thirty degrees, sixty degrees and ninety degrees, and the isosceles right-angle triangle is specially combined by forty-five degrees, forty-five degrees and ninety degrees, a teacher needs to use two triangular rulers to draw the specifications of the two triangles, so that the teacher needs to carry more rulers, and the two rulers cannot measure irregular angles, therefore, the multifunctional ruler for mathematical teaching is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multifunctional ruler for mathematical education, which solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: multifunctional ruler utensil is used in mathematical education, including upstand, vertical column, supplementary drawing device and angle measuring device, the right flank of upstand and the left surface fixed connection of vertical column, flexible groove has been seted up to the upper surface of upstand, the inner wall sliding connection in flexible groove has the auxiliary strip, the right flank of auxiliary strip all rotates through the pivot with the upper surface of vertical column and is connected with the spliced pole, the right-hand member fixed mounting of left side spliced pole has telescopic sleeve, the surface of right side spliced pole and telescopic sleeve's inner wall sliding connection, supplementary drawing device sets up the right flank at the upper surface of auxiliary strip and vertical column respectively, angle measuring device sets up the surface at telescopic sleeve.

Preferably, two limiting holes are formed in the left side face of the vertical column, an adjusting groove is formed in the left side face of the auxiliary strip, an adjusting spring is fixedly mounted on the inner wall of the adjusting groove, a limiting column is fixedly mounted at the left end of the adjusting spring, and the surface of the limiting column is in sliding connection with the inner wall of each limiting hole.

Preferably, supplementary drawing device includes ordinary right-angle board and isosceles right-angle board, and the inserting groove has all been seted up with the right flank of straight post to the upper surface of auxiliary, and the left surface of ordinary right-angle board and the left surface of lower surface and isosceles right-angle board all are provided with the inserting column, and ordinary right-angle board all pegs graft at the inner wall of inserting groove through the inserting column with the isosceles right-angle board.

Preferably, angle measuring device includes scale ring and rotation post, and the surface of scale ring and telescopic tube's fixed surface are connected, rotate the upper end of post and telescopic tube's surface rotation and be connected, and the rotating groove has been seted up to the interior anchor ring of scale ring, and the standing groove has been seted up to the lower extreme of rotation post, and the inner wall of standing groove has the piece of suppressing through expanding spring sliding connection, the lower extreme of the piece of suppressing and the inner wall overlap joint of standing groove.

Preferably, the upper surface of the straight column is fixedly provided with a placing box, and the upper surface of the straight column is provided with a grab handle.

Preferably, distance measurement scale lines are marked on the front face of the straight column.

Advantageous effects

The utility model provides a multifunctional ruler for mathematical education, which has the following beneficial effects:

1. this multi-functional chi utensil is used in mathematical education, through setting up the accessory strip, take the accessory strip back out completely from flexible inslot, the total length of upstand and accessory strip equals the length of vertical column, thereby make the chi utensil present isosceles right triangle's state, take in flexible groove back with the accessory strip, the length ratio of upstand and vertical column is the ratio of two right-angle sides of ordinary right triangle, thereby make this chi utensil can switch the form between isosceles right triangle and ordinary right triangle, the mr only needs to switch the form, can draw out two kinds of patterns, the chi utensil figure that the mr need carry has been reduced.

2. This multi-functional chi utensil is used in mathematical education through setting up supplementary instrument of drawing, because adding of auxiliary strip establishes for the angle between spliced pole and vertical post is no longer fixed, and the upper end of auxiliary strip is unsuitable with the right-hand member of vertical post to be added and establishes fixed angle, inserts behind isosceles right-angle board and the ordinary right-angle board, and the mr can draw more perfect isosceles right-angle triangle and ordinary right-angle triangle.

3. This multi-functional chi utensil is used in mathematical education through setting up angle measuring device, measures to anomalous angle, and the mr only needs lean on telescopic sleeve on one side of angle, will rotate the post and rotate the another side that moves to the angle, observes the position that the post pointed on the scale ring that rotates, the angle data that obtains this anomalous angle that can relax.

Drawings

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

FIG. 2 is a schematic perspective view of a scale ring;

FIG. 3 is a schematic view of a right-angled column in front cross section;

FIG. 4 is a schematic view of a front cross-section structure of the telescopic sleeve;

fig. 5 is a schematic front sectional view of the rotary column.

In the figure: the vertical column 1, the vertical column 2, the auxiliary bar 3, the connecting column 4, the telescopic sleeve 5, the limiting column 6, the common right-angle plate 7, the isosceles right-angle plate 8, the scale ring 9, the rotating column 10, the pressing block 11, the placing box 12 and the holding handle 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: multifunctional ruler utensil is used in mathematical education, including upstand 1, vertical column 2, supplementary drawing device and angle measuring device, the right flank of upstand 1 and the left surface fixed connection of vertical column 2, flexible groove has been seted up to upstand 1's upper surface, the inner wall sliding connection in flexible groove has assistant strip 3, two spacing holes have been seted up to upstand 1's left surface, the adjustment tank has been seted up to the left surface of assistant strip 3, the inner wall fixed mounting in adjustment tank has regulating spring, regulating spring's left end fixed mounting has spacing post 6, the surface of spacing post 6 and the inner wall sliding connection in spacing hole.

The right flank of assistant bar 3 and the upper surface of vertical column 2 all are connected with spliced pole 4 through the pivot rotation, the right-hand member fixed mounting of left side spliced pole 4 has telescopic sleeve 5, the surface of right side spliced pole 4 and telescopic sleeve 5's inner wall sliding connection, through setting up assistant bar 3, take out the back completely with assistant bar 3 from the flexible inslot, vertical column 1 equals the length of vertical column 2 with the total length of assistant bar 3, thereby make the chi utensil present isosceles right triangle's state, after taking in telescopic slot with assistant bar 3, the length ratio of vertical column 1 and vertical column 2 is the ratio of two right-angle sides of ordinary right-angle triangle, thereby make this chi utensil can switch the form between isosceles right-angle triangle and ordinary right-angle triangle, the mr only needs to switch the form, can draw two kinds of patterns, the chi utensil figure that the mr need carry has been reduced.

The auxiliary drawing device is respectively arranged on the upper surface of the auxiliary bar 3 and the right side surface of the upright post 2, the auxiliary drawing device comprises a common right-angle plate 7 and an isosceles right-angle plate 8, the upper surface of the auxiliary bar 3 and the right side surface of the upright post 2 are both provided with inserting grooves, the left side surface and the lower surface of the common right-angle plate 7 and the left side surface of the isosceles right-angle plate 8 are both provided with inserting posts, the common right-angle plate 7 and the isosceles right-angle plate 8 are both inserted into the inner wall of the inserting grooves through the inserting posts, the upper surface of the upright post 2 is fixedly provided with a placing box 12, the placing box 12 can accommodate and place the common right-angle plate 7 and the isosceles right-angle plate 8, the upper surface of the upright post 2 is provided with a grab handle 13, the front surface of the upright post 2 is carved with distance measuring scale lines, the grab handle 13 is convenient for teachers to hold the ruler, through the arrangement of the auxiliary drawing tool, because the addition of the auxiliary bar 3, the connecting post 4 and the upright post 2 and the upright post 1 are not fixed any more, the upper end of auxiliary strip 3 is unsuitable with the right-hand member of upright post 2 to be add and establishes fixed angle, inserts isosceles right-angle board 8 and ordinary right-angle board 7 back, and the mr can draw more perfect isosceles right triangle and ordinary right triangle.

Angle measuring device sets up the surface at telescope tube 5, angle measuring device includes scale ring 9 and rotation post 10, the surface of scale ring 9 and telescope tube 5's fixed surface are connected, the upper end of rotation post 10 is rotated with telescope tube 5's surface and is connected, the rotating groove has been seted up to the interior anchor ring of scale ring 9, the standing groove has been seted up to the lower extreme of rotation post 10, the inner wall of standing groove has suppression piece 11 through expanding spring sliding connection, the lower extreme of suppression piece 11 and the inner wall overlap joint of standing groove, through setting up angle measuring device, measure to anomalous angle, mr only needs to lean on telescope tube 5 in one side at the angle, will rotate post 10 and rotate the another side that moves to the angle, the observation rotates the position that post 10 indicates on scale ring 9, can be relaxed obtain the angle data at this anomalous angle.

The working principle is as follows: when the teacher uses the device to draw ordinary right-angled triangle case and isosceles right triangle, auxiliary strip 3 is pulled out completely, the total length of vertical post 1 and auxiliary strip 3 equals the length of straight post 2, thereby make the chi utensil present isosceles right triangle's state, insert isosceles right angle board 8 in the inner wall of two inserting grooves successively, rely on vertical post 1, auxiliary strip 3, two spliced poles 4, the profile that telescopic sleeve 5 and straight post 2 are constituteed is drawn, thereby the perfect isosceles right triangle of roll-off, in retracting the telescopic groove with auxiliary strip 3, the length ratio of vertical post 1 and straight post 2 is the ratio of two right-angle sides of ordinary right angle triangle, insert ordinary right angle board 7 in the inner wall of two inserting grooves successively, rely on vertical post 1, two spliced poles 4, the profile that telescopic sleeve 5 and straight post 2 constitute is drawn, thereby the perfect ordinary right-angled triangle of roll-off.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Multifunctional ruler for mathematical education, including vertical column (1), vertical column (2), supplementary drawing device and angle measuring device, its characterized in that: the utility model discloses a vertical column, including erecting post (1), right flank and the left surface fixed connection of vertical column (2), flexible groove has been seted up to the upper surface of erecting post (1), the inner wall sliding connection in flexible groove has auxiliary strip (3), the right flank of auxiliary strip (3) all is connected with spliced pole (4) through the pivot rotation with the upper surface of vertical column (2), the right-hand member fixed mounting of left side spliced pole (4) has telescope tube (5), the surface of right side spliced pole (4) and the inner wall sliding connection of telescope tube (5), supplementary drawing device sets up the right flank at the upper surface of auxiliary strip (3) and vertical column (2) respectively, angle measuring device sets up the surface at telescope tube (5).

2. The multifunctional ruler for mathematics teaching of claim 1, wherein: two limiting holes are formed in the left side face of the vertical column (1), an adjusting groove is formed in the left side face of the auxiliary bar (3), an adjusting spring is fixedly mounted on the inner wall of the adjusting groove, a limiting column (6) is fixedly mounted at the left end of the adjusting spring, and the surface of the limiting column (6) is connected with the inner wall of the limiting hole in a sliding mode.

3. The multifunctional ruler for mathematics teaching of claim 1, wherein: the auxiliary drawing device comprises a common right-angle plate (7) and an isosceles right-angle plate (8), wherein the upper surface of the auxiliary strip (3) and the right side surface of the straight column (2) are both provided with inserting grooves, the left side surface of the common right-angle plate (7) and the left side surface of the lower surface of the auxiliary strip and the left side surface of the isosceles right-angle plate (8) are both provided with inserting columns, and the common right-angle plate (7) and the isosceles right-angle plate (8) are both inserted into the inner wall of the inserting grooves through the inserting columns.

4. The multifunctional ruler for mathematics teaching of claim 1, wherein: the angle measuring device comprises a scale ring (9) and a rotating column (10), the surface of the scale ring (9) is fixedly connected with the surface of a telescopic sleeve (5), the upper end of the rotating column (10) is rotatably connected with the surface of the telescopic sleeve (5), a rotating groove is formed in the inner ring surface of the scale ring (9), a placing groove is formed in the lower end of the rotating column (10), a pressing block (11) is connected to the inner wall of the placing groove through a telescopic spring in a sliding mode, and the lower end of the pressing block (11) is in lap joint with the inner wall of the placing groove.

5. The multifunctional ruler for mathematics teaching of claim 1, wherein: the upper surface of the straight column (2) is fixedly provided with a placing box (12), and the upper surface of the straight column (2) is provided with a grab handle (13).

6. The multifunctional ruler for mathematics teaching of claim 1, wherein: distance measurement scale marks are carved on the front surface of the straight column (2).