CN205523257U - Novel graphics primitive chi for mathematics - Google Patents

Abstract

The novel drawing tool ruler for mathematics comprises a bottom ruler, a movable ruler, and a rotating device. The movable ruler is connected to the bottom ruler through the rotating device. The rotating device includes a rotating seat and a rotating bearing. The upper part of the bottom ruler has a connecting groove for the movable ruler. The middle part of the connecting groove of the movable ruler has a horizontal measurement line, the connecting groove of the movable ruler is connected with the movable ruler, the left end of the bottom ruler has a connecting groove of a rotating seat, and the upper part of the connecting groove of the rotating seat has a dial fixing groove, and the dial The fixed groove is connected to the dial, and the upper part of the dial has an angle mark groove, and the inside of the angle mark groove has an angle card, and the middle part of the dial has a rotation hole, and the left end of the movable ruler has a rotation protrusion, and the rotation protrusion Inserted into the rotating hole, the lower part of the rotating protrusion has a rotating post.

Description

A New Drawing Tool Ruler for Mathematics

technical field

The utility model relates to the field of mathematics, in particular to a novel drawing tool ruler for mathematics.

Background technique

In mathematics teaching, the drawing tool ruler is often used as an auxiliary teaching tool. The existing drawing tool has a single function when used. Therefore, teachers have to change different drawing tools repeatedly during the teaching process, which affects the teaching effect. At the same time, it is very convenient to carry.

Utility model content

The utility model aims at the above-mentioned deficiencies in the prior art, and provides a convenient portable new mathematical drawing tool ruler.

The purpose of this utility model is to realize through the following technical solutions:

A new type of drawing tool ruler for mathematics, comprising a bottom ruler, a movable ruler, and a rotating device. The movable ruler is connected to the bottom ruler through the rotating device. The rotating device includes a rotating seat and a rotating bearing. There is a horizontal measuring line in the middle part of the connecting groove of the movable ruler, the connecting groove of the movable ruler is connected with the movable ruler, the left end of the bottom ruler has a connecting groove of a rotating seat, and the upper part of the connecting groove of the rotating seat has a dial fixing groove. The fixed groove of the dial is connected with the dial, the upper part of the dial has an angle mark groove, the inside of the angle mark groove has an angle card, the middle part of the dial has a rotation hole, the left end of the movable ruler has a rotation protrusion, and the rotation The protrusion is inserted into the rotation hole, and the lower part of the rotation protrusion has a rotation post.

The connecting groove of the rotating seat is connected with the rotating seat, the rotating seat has a rotating groove inside, the bottom of the rotating groove has a bearing groove, the bearing groove is connected with a rotating bearing, and the rotating bearing is connected with a rotating column, and the rotating column is rotating Rotate in the slot.

The middle part of the movable ruler has an angle measurement line, and the angle measurement line is adapted to the horizontal measurement line, and the right side of the movable ruler has a chalk fixing hole, and the chalk fixing hole is connected with chalk.

Beneficial effect:

The movable ruler is connected to the bottom ruler through a rotating device, and the left end of the bottom ruler has a connecting groove of a rotating seat, and the upper part of the connecting groove of the rotating seat has a dial fixing groove, and the dial fixing groove is connected to the dial, and the upper part of the dial has an angle Marking groove, the inside of the angle marking groove has an angle card, the angle card can effectively point out the angle of the drawn figure, the left end of the movable ruler has a rotating protrusion, the rotating protrusion is inserted into the rotating hole, and the rotating protrusion The lower part has a rotating column. The connecting groove of the rotating seat is connected with the rotating seat, the rotating seat has a rotating groove inside, the bottom of the rotating groove has a bearing groove, the bearing groove is connected with a rotating bearing, and the rotating bearing is connected with a rotating column, and the rotating column is rotating Rotating in the groove, under the action of the rotating column, the movable ruler can realize the rotation, which is convenient for the teacher to measure the angle. The middle part of the movable ruler has an angle measurement line, and the angle measurement line is adapted to the horizontal measurement line. The right side of the movable ruler has a chalk fixing hole, and the chalk fixing hole is connected to the chalk. The rotation of the ruler can realize the drawing of arc lines. This new type of mathematical drawing tool ruler can not only draw straight lines, but also draw arcs, and can be used as a protractor. It has many functions and is easy to carry, which improves the classroom of mathematics teachers. efficiency.

Description of drawings

Fig. 1 is the schematic structure diagram of the novel mathematics drawing tool ruler described in the utility model.

Fig. 2 is a structural schematic diagram of the rotating device described in the present invention.

detailed description

Below according to accompanying drawing and embodiment the utility model is described in further detail:

A new type of drawing tool ruler for mathematics, comprising a bottom ruler 1, a movable ruler 2, and a rotating device. The movable ruler 2 is connected to the bottom ruler 1 through a rotating device. The upper part of ruler 1 has movable ruler connecting groove 5, and the middle part of described movable ruler connecting groove 5 has horizontal measuring line 17, and described movable ruler connecting groove 5 is connected movable ruler 2, and described bottom chi 1 left end has rotating seat connecting groove 6, so The upper part of the connecting groove 6 of the rotating seat has a dial fixing groove 9, and the dial fixing groove 9 is connected to the dial 10, and the upper part of the dial 10 has an angle mark groove 11, and the inside of the angle mark groove 11 has an angle card 12, The angle card can effectively point out the angle of the drawn figure. The middle part of the dial 10 has a rotating hole 13, and the left end of the movable scale 1 has a rotating protrusion 14, and the rotating protrusion 14 is inserted into the rotating hole 13. The rotating The lower part of the protrusion 14 has a rotating post 15 .

The rotating seat connection groove 6 is connected to the rotating seat 3, and the rotating seat 3 has a rotating groove 7 inside, and the bottom of the rotating groove 7 has a bearing groove 8, and the bearing groove 8 is connected to the rotating bearing 4, and the rotating bearing 4 is connected to Rotating column 15, the rotating column 15 rotates in the rotating groove 7, under the action of the rotating column, the movable ruler realizes the rotation, which is convenient for the teacher to measure the angle.

The middle part of described movable ruler 2 has angle measurement line 16, and described angle measurement line 16 is adapted to horizontal measurement line 17, and described movable ruler right side has chalk fixing hole 18, and described chalk fixing hole 18 connects chalk, and bottom chi Fix the blackboard and use the rotation of the movable ruler to draw arc lines. This new type of mathematical drawing tool ruler can not only draw straight lines, but also draw arcs. It can also be used as a protractor. It has many functions and is easy to carry. Improved classroom efficiency for math teachers.

Claims (3)

1. A novel drawing tool ruler for mathematics is characterized in that: comprise base ruler, movable ruler, rotating device, described movable ruler connects base ruler by rotating device, described rotating device comprises rotating seat, rotating bearing, described bottom The upper part of the ruler has a movable ruler connecting groove, the middle part of the movable ruler connecting groove has a horizontal measurement line, the movable ruler connecting groove is connected to the movable ruler, the left end of the bottom ruler has a rotating seat connecting groove, and the upper part of the rotating seat connecting groove has a scale The fixed groove of the dial, the fixed groove of the dial is connected with the dial, the upper part of the dial has an angle mark groove, the inside of the angle mark groove has an angle card, the middle part of the dial has a rotation hole, and the left end of the movable ruler has a rotation The rotating protrusion is inserted into the rotating hole, and the lower part of the rotating protrusion has a rotating post. 2. novel mathematics drawing tool ruler according to claim 1, is characterized in that: described turning seat connection groove connects turning seat, and described turning seat inside has turning groove, and described turning groove bottom has bearing groove, and described The bearing groove is connected with a rotating bearing, and the rotating bearing is connected with a rotating column, and the rotating column rotates in the rotating groove. 3. novel mathematics drawing tool ruler according to claim 2, is characterized in that: described movable ruler middle part has angle measurement line, and described angle measurement line is compatible with horizontal measurement line, and described movable ruler right side has chalk A fixing hole, the chalk fixing hole is connected with chalk.