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Mechanical drawing blackboard

A blackboard and mechanical technology, applied in the field of teaching aids, can solve the problems of irregular histograms and low efficiency, achieve the effects of standardizing histograms, improving quality, and reducing teaching fatigue

Inactive Publication Date: 2018-05-04
荣静
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of mathematics teaching, most teachers use manual drawing to draw histograms; however, the manual drawing method is not only inefficient, but also the drawn histograms are not standardized

Method used

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  • Mechanical drawing blackboard
  • Mechanical drawing blackboard
  • Mechanical drawing blackboard

Examples

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with accompanying drawing:

[0024] Such as Figure 1 to Figure 5 shown;

[0025] A mechanical drawing blackboard, comprising a magnetic blackboard 1, a blackboard frame 2, a magnetic ruler board 3, and a support frame 4 symmetrically installed at both ends of the lower frame of the blackboard frame 2, the magnetic blackboard 1 is embedded in the blackboard frame 2, and the inner side of the blackboard frame 2 is up and down A chute 5 is arranged symmetrically, and the two ends of the magnetic scale plate 3 are embedded in the chute 5 respectively. The magnetic scale plate 3 is slidably connected with a slider 6, and the left and right sides of the slider 6 are symmetrically provided with jacks 7. A drawing pen 8 is inserted in the hole 7, and a horizontal scale 9 is provided on the front side of the lower frame of the blackboard frame 2. The magnetic scale plate 3 can be slid horizontally along th...

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Abstract

The invention discloses a mechanical drawing blackboard. The mechanical drawing blackboard comprises a magnetic blackboard body, a blackboard frame, a magnetic ruler plate and supporting frames symmetrically installed at the two ends of the lower border of the blackboard frame. The magnetic blackboard body is embedded in the blackboard frame. First sliding grooves are symmetrically formed in the upper portion and the lower portion of the inner side of the blackboard frame. The two ends of the magnetic ruler plate are embedded into the first sliding grooves correspondingly. A sliding block is slidably connected to the magnetic ruler plate. Insertion holes are symmetrically formed in the left side and the right side of the sliding block. Drawing pens are inserted into the insertion holes. Ahorizontal dividing ruler is arranged on the front side face of the lower border of the blackboard frame. By adoption of the mechanical drawing blackboard, a bar graph can be drawn more easily, conveniently and rapidly, and the drawing efficiency is effectively improved; and meanwhile, the drawn bar graph is more standard, the drawing quality is effectively improved, the bar graph is made clearer,the teaching quality is improved, and the teaching difficulty is lowered.

Description

technical field [0001] The invention relates to the technical field of teaching tools, in particular to a mechanical drawing blackboard. Background technique [0002] A histogram (bar chart) is a statistical report chart that uses the length of a rectangle as a variable to express a graph. A series of vertical stripes of different heights represent the distribution of data and are used to compare two or more values ​​(different Time or different conditions), only one variable, usually used for analysis of smaller data sets. Histograms can also be arranged horizontally or expressed in a multi-dimensional manner. It is mainly used for statistics and analysis of data. In the early days, it was mainly used in mathematics and statistics. It has been widely used in modern times, such as the analysis and testing of modern electronic products and some software, such as computers, digital camera monitors and photoshop. to the corresponding histogram. [0003] In the process of mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L1/04B43L13/00B43L12/02
CPCB43L1/04B43L12/02B43L13/00
Inventor 荣静
Owner 荣静
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