Pen split drawing rule

A split-type, drawing ruler technology, applied in the field of drawing rulers, can solve the problems of inconvenience to carry, triangular rulers occupying space, not used to suiting triangular rulers, etc., and achieves the effect of being easy to carry.

Inactive Publication Date: 2013-04-24
HUBEI UNIV OF AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, today's college engineering students are not used to using the classic set triangle ruler (if they do use only one) in drawing classes, and most students are used to using a straightedge
The reason is that some students feel that it is too troublesome to use two triangle rulers to draw pictures (no need to be rigorous), and the second is that some students think that the triangle rulers take up space and are inconvenient to carry

Method used

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  • Pen split drawing rule
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Embodiment Construction

[0029] The present invention is as shown in Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14.

[0030] A pen-shaped split-type drawing ruler, comprising ruler one 1, ruler two 9, the sections of ruler one 1 and ruler two 9 are two opposite semicircles, and the two sides of ruler one 1 and ruler two 9 There is a scale line, one end of the ruler-1 is provided with a buckle 2, the other end is provided with a platform surface 3, and the middle of the platform surface 3 is provided with a pin hole 4, and the platform surface 3 around the pin hole 4 is evenly arranged with multiple a positioning hole 5; one side of the ruler two 9 is directly facing the guide surface 11, and one end of the ruler two 9 cooperates with the bayonet 10 at one end of the ruler one 1, and the other end is provided with a buckle 2; the pin of the ruler one 1 Rotation guide block 6 is worn in the hole, and the bottom surface of rotation guide block 6 is provided with a positioning boss 8 that cooperat...

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Abstract

The invention provides a pen split drawing rule which comprises a first ruler and a second ruler. The section of the first ruler and the section of the second ruler are two opposite semicircles. Two sides of the first and second rulers are provided with scale marks. A fastener is arranged at one end of the first ruler, and a platform surface is arranged at the other end of the first ruler. The middle of the platform surface is provided with a pinhole. A plurality of positioning holes are evenly distributed on the platform surface around the pinhole. One side of the second ruler is a straight guide surface, and two ends of the side are provided with a clamping notch and a fastener both matching with the fastener at one nd of the first ruler. A rotary guide block penetrates into the pinhole of the first ruler, the bottom of the rotary guide block is provided with a positioning protrusion matching with the positioning hole, and the rotary guide block is provided with a guide groove matching with the straight surface of the second ruler. The pen split drawing rule allows for free rotation in the range of 0-180 DEG and locking at special angle. After the guide groove of the rotary guide block is joined with the guide surface of the first ruler, drawing of lines and parallel lines at various angles is facilitated, and the requirement for portability is met.

Description

technical field [0001] The invention relates to a drawing ruler in engineering drawing, in particular to a pen-shaped split drawing ruler. Background technique [0002] Drawing instruments for engineering drawing mainly include compasses, triangular rulers, pencils, etc. There are a large number of sets of tools on the market, and there are also various single-piece compasses that have been improved and invented, but improvements and inventions on drawing rulers are rare. . However, today's college engineering students are less accustomed to using the classic set triangle in drawing classes (only one, if any), and most students are accustomed to using a straightedge. The reason is that some students feel that it is too troublesome to use two triangle rulers to draw pictures (no rigorousness is required), and the second is that some students think that the triangle rulers take up space and are inconvenient to carry. Therefore, it is very necessary to design a drawing ruler ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L7/12
Inventor 任柏林
Owner HUBEI UNIV OF AUTOMOTIVE TECH
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