CN108284683A - A kind of mathematics Geometric figure drawing pen - Google Patents

Abstract

The invention discloses a mathematical geometry drawing pen, which comprises a drawing ruler assembly and a drawing pen assembly. The drawing ruler assembly is composed of a female ruler and a sub ruler. It is composed of a telescopic sleeve. Compared with the prior art, the present invention sets a movable and continuously adjustable sliding drawing seat on the sub-ruler by setting the sub-ruler and the female ruler, and cooperates with the ruler to better carry out geometric drawing with reference to the ruler. Curve drawing, in addition, the drawing pen is equipped with an automatic sheath, the drawing is stable, and the pen core is automatically protected. It is easy to use and has the value of popularization and application.

Description

A Mathematical Geometry Drawing Pen

technical field

The invention relates to a mathematical drawing tool, in particular to a mathematical geometry drawing pen.

Background technique

Geometry is a subject that studies the structure and properties of space. It is one of the most basic research contents in mathematics, and has the same important status as analysis, algebra, etc., and has a very close relationship. Geometry has a long history and rich content. It is extremely closely related to algebra, analysis, number theory, and so on. Geometric thinking is the most important class of thinking in mathematics. For the time being, the development of each branch of mathematics has a tendency to be geometric, that is, to use geometric viewpoints and thinking methods to explore various mathematical theories. Common theorems include Pythagorean Theorem, Euler Theorem, Stewart Theorem, etc. In the prior art, the drawing of geometric curves is mostly done by "Flower Curve Gauge", which is composed of a set of gears. A large gear is ring-shaped, and the teeth are made inside; the teeth of several small gears are made outside, and there are some small round holes and several larger holes of other shapes inside the small gears. However, the drawing holes on the ruler gauge are fixed and cannot be adjusted. A plurality of drawing holes can be set at most, but they cannot be continuously adjusted. Therefore, a new drawing tool is needed.

Contents of the invention

The purpose of the present invention is to provide a mathematical geometry drawing pen in order to solve the above problems.

The present invention achieves the above object through the following technical solutions:

The invention includes a drawing ruler assembly and a drawing pen assembly, the drawing ruler assembly is composed of a female ruler and a subruler, the female ruler is ring-shaped, tooth marks are provided on the inner circle of the female ruler, and the subruler is a circular gear type, the gear tooth marks of the sub-ruler match the tooth marks of the female ruler, the diameter of the sub-ruler is smaller than the inner diameter of the female ruler, and a waist-shaped groove is arranged on the maximum linear distance in the middle of the sub-ruler, The sliding drawing seat is located in the waist-shaped groove, and can slide and be fixed in the waist-shaped groove. The middle part of the sliding drawing seat is provided with a drawing hole that communicates up and down. The drawing pen assembly consists of a pen case, a nib, Composed of a pen core, a spring seat, a spring and a telescopic sleeve, the spring seat is fixed near the pen end of the pen core, the spring is sleeved on the pen core, and one end of the spring is in contact with the spring seat , the other end of the spring is in contact with the telescopic sleeve, one end of the telescopic sleeve is located in the pen shell and can slide, the refill is located in the telescopic sleeve, and the nib is fixed to the pen At the upper end of the shell, the head of the pen core is in contact with the pen tip.

Further, the sliding drawing seat is composed of a screw and a nut, the screw is located in the waist-shaped groove from bottom to top, the nut is screwed to the upper end of the screw, and a through hole is set in the middle of the screw as the plot hole.

As an improvement, a ruler is provided on the edge of the waist-shaped groove on the ruler.

The beneficial effects of the present invention are:

The present invention is a mathematical geometry drawing pen. Compared with the prior art, the present invention sets a movable and continuously adjustable sliding drawing seat on the sub-ruler by arranging a sub-ruler and a female ruler, and cooperates with a scale. The reference scale can It is better to draw geometric curves. In addition, the drawing pen is equipped with an automatic sheath, so the drawing is stable, and the pen core is automatically protected. It is easy to use and has the value of popularization and application.

Description of drawings

Fig. 1 is the structural representation of sub ruler and female ruler of the present invention;

Fig. 2 is the connection structure schematic diagram of screw rod and nut of the present invention and sub-ruler;

Fig. 3 is the structural representation of screw rod and nut of the present invention;

Fig. 4 is a schematic cross-sectional structure diagram of the drawing pen assembly of the present invention.

In the figure: 1-female ruler, 2-sub-ruler, 3-waist groove, 4-sliding drawing seat, 41-screw, 42-nut, 5-drawing hole, 6-pen shell, 7-pen head, 8-pen Core, 9-spring seat, 10-spring, 11-telescopic sleeve.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1: the present invention includes a drawing ruler assembly and a drawing pen assembly, the drawing ruler assembly is composed of a female ruler 1 and a sub-ruler 2, the female ruler 1 is ring-shaped, and the inner circle of the female ruler 1 is provided with teeth The sub-ruler 2 is a circular gear type, the gear tooth marks of the sub-ruler 2 match the tooth marks of the female ruler 1, the diameter of the sub-ruler 2 is smaller than the inner diameter of the female ruler 1, A waist-shaped groove 3 is arranged on the maximum linear distance in the middle part of the sub-ruler 2, and the sliding drawing seat 4 is located in the waist-shaped groove 3, and can slide and be fixed in the waist-shaped groove 3. The sliding drawing seat 4 The middle part is provided with the drawing hole 5 that communicates up and down, and described drawing pen assembly is made up of pen housing 6, nib 7, pen core 8, spring seat 9, spring 10 and telescopic sleeve 11, and the pen end of described pen core 8 is fixed The spring seat 9 is provided, the spring 10 is sleeved on the pen core 8, and one end of the spring 10 is in contact with the spring seat 9, and the other end of the spring 10 is in contact with the telescopic sleeve 11, One end of the telescopic sleeve 11 is located in the pen case 6 and can slide, the pen core 8 is located in the telescopic sleeve 11, the nib 7 is fixed on the upper end of the pen case 6, and the pen core The head of 8 contacts with described nib 7.

Further, the sliding drawing seat 4 is composed of a screw 41 and a nut 42, the screw 41 is located in the waist groove 3 from bottom to top, the nut 42 is threadedly connected with the upper end of the screw 41, and the screw The central part of 41 is provided with a through hole as the drawing hole 5 .

A ruler 12 is provided on the edge of the waist-shaped groove 3 on the sub-ruler 2 .

The working principle of the present invention is as follows:

When the refill 8 of the drawing pen assembly is inserted into the drawing hole 5, the telescopic sleeve 11 is in contact with the ruler 2, the pen shell 6 is pressed, the telescopic sleeve 11 is pressed down, and the refill 8 passes through the telescopic sleeve 11 and the drawing hole 5 To draw, when the drawing pen is not in use, the telescopic sleeve 11 will automatically pop up under the force of the spring 10 to protect the pen core. By moving the sliding drawing seat 4 in the waist-shaped groove 3, and fixing the sliding drawing seat 4 to the required The position of the sliding drawing seat 4 can also be determined by referring to the scale 12. The specific sliding drawing seat plays the role of fixing and loosening by loosening and fixing the nut 2 and the screw rod 1. When the drawing pen draws, the drawing pen The component drives the sub-ruler 2 to rotate, and the sub-ruler 2 draws the required geometric curve in the female ruler 1.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and what described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention will also have other functions without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (3)

1. a kind of mathematics Geometric figure drawing pen, it is characterised in that：Including drawing rule component and drawing pen assembly, the drawing rule component It is made of female ruler and sub- ruler, mother's ruler is annular, and indentation is provided in mother's ruler inner circle, and the sub- ruler is circular gear Type, the gear indentation of the sub- ruler and the indentation of female ruler are mutually matched, and the diameter of the sub- ruler is less than the interior of female ruler Diameter, the sub- ruler middle part maximum linear distance are above provided with waist type groove, and the sliding drawing seat is located in the waist type groove, and energy It is enough to slide and fix in kidney slot, it is provided with the drawing hole communicated up and down, the drawing pen in the middle part of the sliding drawing seat Component is made of a shell, nib, pen core, spring base, spring and telescopic, described in the tip of the brushstyle of a writing or painting head fixed setting nearby of the pen core Spring base, the spring pocket is loaded on the pen core, and one end of the spring is contacted with the spring base, the spring it is another One end is contacted with the telescopic, and one end of the telescopic is located in described shell, and can slide, and the pen core is located at institute It states in telescopic, the nib is fixed on the upper end of described shell, and the head of the pen core is contacted with the nib.

2. mathematics Geometric figure drawing pen according to claim 1, it is characterised in that：The sliding drawing seat is by screw rod and nut Composition, the screw rod are from bottom to top located in the waist type groove, and the nut is connect with the threaded upper ends of the screw rod, the spiral shell The through-hole of the middle part setting perforation of bar is as the drawing hole.

3. mathematics Geometric figure drawing pen according to claim 1, it is characterised in that：Positioned at the waist type groove on the sub- ruler Edge is provided with scale.