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Portable stretchable ruler for teaching

A telescopic ruler and portable technology, which is applied to rulers, printing and writing utensils, etc., can solve the problems of unfavorable carrying by teachers, high damage rate of rulers, and poor focus points, etc., to achieve no sense of pause in drawing, smooth use, and easy operation Figure stabilization effect

Inactive Publication Date: 2018-01-23
周翔
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the process of teaching, teachers, especially teachers of mathematics, physics and chemistry, must use rulers, but the blackboard is too large, and the size of the rulers needs to be long enough to use the rulers for drawing, and the teaching rulers equipped in the classroom are easily damaged and often cannot be used , so most teachers bring their own rulers for teaching. If you still use the usual rulers, because the size is too large, it is very unfavorable for teachers to carry them. Frequent bumps will lead to a high rate of damage to the rulers and a short lifespan; in addition, conventional rulers Straightedges are made of thinner stainless steel or thinner wooden structures. When drawing with a straightedge, the focus point is poor, and the chalk is easy to fall off the straightedge, so you need to be extra careful

Method used

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0016] see figure 1 A portable telescopic ruler for teaching is shown, including a main ruler 1, a first sub-ruler 2 and a second sub-ruler 3 that are slidably matched with the main ruler 1, and the telescopic structure ensures that the ruler can be stretched and the length can be adjusted. It is easy to carry after being shortened, and easy to use after being stretched. The main ruler 1, the first auxiliary ruler 2 and the second auxiliary ruler 3 all include a scale plate 9 and a rib formed by horizontally bending from the upper end of the scale plate 8. The sidewall can increase the force ap...

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PUM

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Abstract

The invention relates to a portable stretchable ruler for teaching. The portable stretchable ruler for teaching comprises a main ruler body, a first secondary ruler body and a second secondary ruler body, wherein the first secondary ruler body and the second secondary ruler body are in sliding fit with the main ruler body; the main ruler body, the first secondary ruler body and the second secondary ruler body each comprise a scale plate and a baffle formed by horizontally bending the upper end of the scale plate and are connected in a matched mode through slide rail structures formed on the scale plates and the baffles; and the two ends of the main ruler body are provided with limiting devices corresponding to the connecting end of the first secondary ruler body and the connecting end of the second secondary ruler body. The portable stretchable ruler for teaching has the advantages of being high in portability, stretchable, smooth in use, and stable and free of stopping feeling duringdrawing.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to a portable teaching telescoping ruler. Background technique [0002] In the process of teaching, teachers, especially teachers of mathematics, physics and chemistry, must use rulers, but the blackboard is too large, and the size of the ruler needs to be long enough to use the ruler for drawing, and the teaching rulers equipped in the classroom are easily damaged and often cannot be used , so most teachers bring their own rulers for teaching. If you still use the usual rulers, because the size is too large, it is very unfavorable for teachers to carry them. Frequent bumps will lead to a high rate of damage to the rulers and a short lifespan; in addition, conventional rulers Straightedges are made of thinner stainless steel or thinner wooden structures. When drawing with a straightedge, the point of application is poor, and the chalk is easy to come off the straightedge,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L7/10
Inventor 周翔
Owner 周翔
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