CN203427497U

CN203427497U - Mathematical teaching used multi-functional ruler

Info

Publication number: CN203427497U
Application number: CN201320581175.7U
Authority: CN
Inventors: 丛瑞雪; 刘红
Original assignee: Harbin Finance University
Current assignee: Harbin Finance University
Priority date: 2013-09-13
Filing date: 2013-09-13
Publication date: 2014-02-12
Anticipated expiration: 2023-09-13

Abstract

A mathematical teaching used multi-functional ruler belongs to the field of teaching assistant tools, and solves the problem that the conventional ruler used in the mathematical teaching process is still inconvenient to draw angles. The mathematical teaching used multi-functional ruler comprises a ruler body, a disc, a hollow column, a circular ring, a connecting column, a pendant and a fine adjusting knob, wherein scales are arranged on the disc, the circle center of the back surface of the disc is rotatably connected with the ruler, the circle center of the front surface of the disc is fixedly connected with the hollow column, the hollow column is arranged vertical to the disc and sleeved with the circular ring, one end of the connecting column is fixedly connected with the circular ring, the other end of the connecting column is fixedly connected with the pendant, a rolling ball is arranged on the back surface of the pendant, the fine adjusting knob is rotatably connected with the ruler, the edge of the fine adjusting knob is in contact with the edge of the disc. The mathematical teaching used multi-functional ruler is mainly used for drawing angles on vertical objects such as a blackboard in the mathematical teaching, and also can be used for measuring angles or drawing graphs such as a straight line.

Description

Multifunctional ruler for math teaching

Technical field

The utility model belongs to teaching tool field, is specifically related to a kind of Multifunctional ruler for math teaching.

Background technology

The various chis that use in mathematical education process at present, draw still inconvenience of angle.

Utility model content

In order to solve the chi using at present in mathematical education process, draw the still problem of inconvenience of angle, for drawing the feature at angle on vertical blackboard in teaching, the utility model provides a kind of Multifunctional ruler for math teaching, and its technical scheme is as follows:

, it comprises ruler, disk, newel, annulus, joint pin, pendant and fine setting button; Described disk is provided with scale, home position below and the ruler of disk are rotationally connected, the home position above of disk is fixedly connected with newel, newel is perpendicular to disk setting, and described annulus is enclosed within on newel, and one end of joint pin is fixedly connected with annulus, the other end of joint pin is fixedly connected with pendant, after pendant, be provided with ball, described fine setting button and ruler are rotationally connected, the fine setting edge of button and the EDGE CONTACT of disk.

The beneficial effects of the utility model are: facilitate picture angle at any angle, can also do protractor and use.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is left side of the present utility model structural representation.

Fig. 3 is the lower end enlarged drawing of Fig. 2.

Fig. 4 is the use state diagram on article one limit at picture angle.

Fig. 5 is the use state diagram on the second limit at picture angle.

The specific embodiment

Referring to figs. 1 through Fig. 5, a kind of Multifunctional ruler for math teaching, it comprises ruler 1, disk 2, newel 3, annulus 4, joint pin 5, fall 6 and fine setting button 7; Described disk 2 is provided with scale 2-1, home position below and the ruler 1 of disk 2 are rotationally connected, the home position above of disk 2 is fixedly connected with newel 3, newel 3 arranges perpendicular to disk 2, and described annulus 4 is enclosed within on newel 3, and one end of joint pin 5 is fixedly connected with annulus 4, the other end of joint pin 5 is fixedly connected with pendant 6, after pendant 6, be provided with ball 6-1, described fine setting button 7 is rotationally connected with ruler 1, the fine setting edge of button 7 and the EDGE CONTACT of disk 2.

Preferably, described pendant 6 is the triangle of lower end point.

Using method and principle: while drawing article one limit at angle, rotary disk 2 makes pendant point to scale 0, and while drawing second limit, falling 2 scales pointed is exactly the angle at drawn angle; Principle is because teacher draws angle on blackboard, falls 2 and remains vertically downward, so can determine angle according to pendant 2 scales pointed, in like manner can use the utility model to take measurement of an angle.

Claims

1. a Multifunctional ruler for math teaching, is characterized in that it comprises ruler (1), disk (2), newel (3), annulus (4), joint pin (5), pendant (6) and fine setting button (7); described disk (2) is provided with scale (2-1), home position below and the ruler (1) of disk (2) are rotationally connected, the home position above of disk (2) is fixedly connected with newel (3), newel (3) arranges perpendicular to disk (2), described annulus (4) is enclosed within on newel (3), one end of joint pin (5) is fixedly connected with annulus (4), the other end of joint pin (5) is fixedly connected with pendant (6), after pendant (6), be provided with ball (6-1), described fine setting button (7) is rotationally connected with ruler (1), the edge of fine setting button (7) and the EDGE CONTACT of disk (2).

2. a kind of Multifunctional ruler for math teaching as claimed in claim 1, is characterized in that described pendant (6) is for the triangle of lower end point.