CN203902059U

CN203902059U - Drawing tool

Info

Publication number: CN203902059U
Application number: CN201420367833.7U
Authority: CN
Inventors: 袁方舟
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-07-04
Filing date: 2014-07-04
Publication date: 2014-10-29
Anticipated expiration: 2024-07-04

Abstract

The utility model relates to a teaching tool for drawing a circle. The teaching tool can be used for drawing the circle without performing complete circular motion. The technical problem to be solved by the utility model is to adopt the technical scheme that a drawing tool comprises a circular fixed frame (1) and an arc-shaped handle (2). The drawing tool is characterized in that a connection mode between the handle (2) and the fixed frame (1) is fixed connection; the plane in which the handle (2) is positioned is perpendicular to the plane in which the fixed frame (1) is positioned; the plane in which the handle (2) is positioned passes through one diameter of the fixed frame (1); a plurality of pens (3) are connected with the fixed frame (1) in a fixed connection mode; the heights of the pens (3) are equal; each pen (3) is perpendicular to the plane in which the fixed frame (1) is positioned; each pen (3) and the handle (2) are respectively positioned on two sides of the plane in which the fixed frame (1) is positioned; the arc-shaped handle (2) is fixedly connected with a rotating shaft (4) which is used for determining the center of the circle. The drawing tool disclosed by the utility model is simple in structure and easy to use.

Description

A kind of drawing tools

Technical field

The utility model relates to a kind of teaching aid, especially draws the teaching aid of circle.

Background technology

Teacher is in the time of blackboard upper drawing circle, cumbersome, even with compasses, the pen that compasses are installed also will do a complete circular motion and just can draw a circle.

Utility model content

In order to solve the deficiencies in the prior art, the utility model proposes a kind of picture device, it goes without doing that complete circular motion just can draw a circle for this device.The utility model can also the spaced circle of painter's paraphernalia.

The utility model solves the technical scheme that its technical problem adopts: a kind of drawing tools, comprise circular fixed mount, the handle of arc, it is characterized in that: the connected mode of handle and fixed mount is to be fixedly connected with, and handle place plane is perpendicular to fixed mount place plane, and handle place plane is through a diameter of fixed mount, branched pen is connected with fixed mount in the mode being fixedly connected with, and pen is highly equal, and pen is perpendicular to fixed mount place plane, and pen and handle are respectively in the both sides of fixed mount place plane, and the handle of arc is fixedly connected with and is useful on the rotating shaft of determining the center of circle.

The utility model is for to provide a kind of new technical scheme at blackboard (or blank) upper drawing circle, and the utility model is simple in structure, and cost is low.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model.

Fig. 2 is side view of the present utility model.

Fig. 3 is top view of the present utility model.

1-fixed mount in figure, 2-handle, 3-pen, 4-rotating shaft.

Detailed description of the invention

Below in conjunction with accompanying drawing, design and use of the present utility model are further illustrated.

Referring to accompanying drawing 1, be structural representation of the present utility model, comprise the handle 2 of circular fixed mount 1, arc, handle 2 is to be fixedly connected with the connected mode of fixed mount 1.

A kind of round belting of drawing, comprise the handle 2 of circular fixed mount 1, arc, it is characterized in that: handle 2 is to be fixedly connected with the connected mode of fixed mount 1, and handle 2 place planes are perpendicular to fixed mount 1 place plane, and handle 2 place planes are through a diameter of fixed mount 1, branched pen 3 is fixedly connected with and is connected to fixed mount 1, and pen 3 is highly equal, and pen 3 is perpendicular to fixed mount 1 place plane, and pen 3 and handle 2 are respectively in the both sides of fixed mount 1 place plane, and the handle 2 of arc is fixedly connected with the rotating shaft 4 that is useful on definite center of circle.

For detailed statement the utility model structure, referring to accompanying drawing 2, branched pen 3 is fixedly connected with and is connected to fixed mount 1, and pen 3 is highly equal, and pen 3 is perpendicular to fixed mount 1 place plane, and pen 3 and handle 2 are respectively in the both sides of fixed mount 1 place plane.Being fixedly connected with can be the mode sticking with glue, the mode that also can be wound around with adhesive tape.Pen can be chalk, can be also marking pen.

For explaining in detail the utility model structure, referring to accompanying drawing 3, handle 2 place planes are perpendicular to fixed mount 1 place plane, and handle 2 place planes are through a diameter of fixed mounts 1.

Using method: hand-held handle, rotating shaft 4 is put into the position in the center of circle, and pen contact blackboard of the present utility model, slightly rotates, just can on blackboard, draw a circle.Or: hand-held handle, rotating shaft 4 is put into the position in the center of circle, and pen contact blackboard of the present utility model, slightly rotates, just can draw by multiple circular arcs and form and the spaced figure of these circular arc tools.Or: hand-held handle, is put into rotating shaft 4 position in the center of circle, and pen contact blackboard of the present utility model, with defeating, just can obtains such figure: formed by multiple points and these are on same circle.

The utility model is as long as rotation a bit or without rotation (with defeating greatly) just can obtain a figure a little.Because teacher is in the time drawing, just passable as long as a lot of exercise question does a circle, and do not need accurately to consider round size, so the utility model can meet such needs, and offers convenience.

Rotating shaft 4 belongs to prior art, such as the widely used sucked type rotating shaft of compasses for teaching now, or pin type rotating shaft, or magnet-type rotating shaft.Its object is exactly to determine the center of circle, and allows picture circle parts to rotate.

Even the length of rotating shaft 4 cause and pen not strictly in same plane, the utility model still can draw one meet teaching needs circle." many " words represent more than three, and at the utility model, various equivalent modifications should be known the implication of " many " in " branched pen ", and the quantity that can change as required.

The utility model is simple in structure, is easy to use.

Claims

1. a drawing tools, comprise circular fixed mount (1), the handle (2) of arc, it is characterized in that: handle (2) is to be fixedly connected with the connected mode of fixed mount (1), and handle (2) place plane is perpendicular to fixed mount (1) place plane, and handle (2) place plane is through a diameter of fixed mount (1), branched pen (3) is connected with fixed mount (1) in the mode being fixedly connected with, and pen (3) is highly equal, and pen (3) is perpendicular to fixed mount (1) place plane, and pen (3) and handle (2) are respectively in the both sides of fixed mount (1) place plane, and the handle of arc (2) is fixedly connected with and is useful on the rotating shaft (4) of determining the center of circle.