Auxiliary circle drawing device and method with chalk head capable of adaptively protruding for teaching
An adaptable, chalk-based technology, applied in the field of teaching aids, can solve the problems of difficult control of numerical values, low versatility, and easy looseness, etc., and achieve the effect of simple and convenient adjustment operation, high data accuracy, and adsorption and fastening
Active Publication Date: 2022-03-25
陈燕
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Problems solved by technology
[0003] However, the center of the current auxiliary circle drawing device is not easy to fix, and it is easy to loosen, resulting in a large deviation of the circle drawn, and the value is not easy to control when the length is adjusted. After adjusting the value, the fixation of the chalk is not convenient for self-adaptive clamping of different lengths of chalk while ensuring that the chalk head protrudes, and the overall use of the versatility is low
Method used
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Embodiment approach
[0063] Another technical scheme proposed by the present invention: provide an implementation method of an auxiliary circle-drawing device with a protruding chalk tip for teaching, comprising the following steps:
[0064] Step 1: Press the rubber suction cup 21 on the blackboard for preliminary adsorption, then rotate the rotating piece 241, and under the action of the adjusting screw 242, drive the rubber plug 243 to move in the opposite direction. At this time, the volume inside the rubber suction cup 21 become larger, and then make the air atmospheric pressure increase the pressure on the rubber sucker 21, and then make the rubber sucker 21 and the black fastening plate adsorb;
[0065] Step 2: Press and adjust the rotating head 331 to separate the adjusting rack 333 from the limiting groove 311, and at the same time turn the adjusting rotating head 331 to drive the extension block 41 outward Move until the number displayed by the radius scale line 412 is an ideal value, loo...
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The invention relates to the technical field of teaching aids, in particular to an auxiliary circle drawing device and method with an adaptable protruding chalk head for teaching, and aims to solve the problems that a circle center of an auxiliary circle drawing device is inconvenient to fix, large deviation of a drawn circle is easily caused, numerical values are not easy to control during length adjustment, operation is troublesome, and the adjusted numerical values are easily affected by unstable manual operation. In order to solve the technical problems that chalk heads protrude while chalks with different lengths are inconveniently clamped in a self-adaptive mode, and the overall use multifunctionality is low, an adjusting component is movably arranged on one side of a circle center mounting piece, the adjusting component can adjust the length of an extension adjusting assembly, and then circles with different diameters are drawn; an extension adjusting assembly is movably arranged on the inner side of the adjusting component, and a chalk head fixing component is arranged at the end, away from the adjusting component, of the extension adjusting assembly, so that the rubber suction cup can be adsorbed more firmly, the adjusting operation is simple and convenient, the data precision is high, and the whole device is high in use multifunctionality.
Description
technical field [0001] The invention relates to the technical field of teaching tools, in particular to an auxiliary circle-drawing device and method for which a chalk tip for teaching can protrude in an adaptive manner. Background technique [0002] Mathematics is a subject that studies concepts such as quantity, structure, change, space, and information, and it is a kind of formal science from a certain perspective. Mathematics arises from counting, calculation, measurement and observation of the shape and motion of objects through the use of abstraction and logical reasoning. Mathematics has become a part of the education category in many countries and regions. It is used in different fields, including science, engineering, medicine, economics, and finance. Mathematicians also study pure mathematics, which is the substantive content of mathematics itself, without any practical application as the goal. In mathematics teaching, circle-drawing devices are often used. [0...
Claims
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IPC IPC(8): B43L9/02B43L9/24B43L12/00B43L13/00
CPCB43L9/02B43L9/24B43L12/00B43L13/001
Inventor 陈燕
Owner 陈燕