CN210101129U

CN210101129U - Circle drawing tool

Info

Publication number: CN210101129U
Application number: CN201920603190.4U
Authority: CN
Inventors: 何本钢; 张艳影
Original assignee: Wuhan University of Science and Engineering WUSE
Current assignee: Wuhan University of Science and Engineering WUSE; Wuhan University of Science and Technology WHUST
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-02-21
Anticipated expiration: 2029-04-28

Abstract

The utility model relates to a circle drawing tool, it includes the stiff end, winds stiff end pivoted expansion end and connecting piece, connecting piece one end is rotated and is connected it is fixed, the other end of connecting piece is provided with the distance adjustable of stiff end the expansion end, the utility model provides a circle drawing tool draws great circle convenient and fast, does not take place the skew, and can be at the instrument of multiple material surface drawing.

Description

Circle drawing tool

Technical Field

The utility model relates to a circle drawing tool belongs to the stationery field.

Background

The compasses are common articles in daily life of people and are indispensable tools for drawing. The existing compasses on the market are of a 'two-leg type', and some problems can occur when the compasses are used: on one hand, when the radius of a drawn circle is larger, the existing compasses are inconvenient to draw, so that the distance adjustment is inconvenient, and the displacement is easy to occur during drawing, so that the paper is damaged; on the other hand, the existing compasses are provided with a pencil (or a scratch pin) at one foot, so that the use scene of the compasses during drawing is limited, and only paper drawing or drawing on a metal surface can be performed.

SUMMERY OF THE UTILITY MODEL

For solving prior art not enough, the utility model provides a circle drawing tool draws great circle convenient and fast, does not take place the skew, and can be at the instrument of multiple material surface drawing.

The utility model aims at realizing through the following technical scheme:

the utility model provides a circle drawing tool, includes the stiff end, winds stiff end pivoted expansion end and connecting piece, connecting piece one end is rotated and is connected the stiff end, the other end of connecting piece is provided with the distance adjustable of stiff end the expansion end.

Based on the technical scheme, the movable end is used for inserting a pen, and the movable end drives the relatively fixed end of the connecting piece to move through moving the pen, so that a circle or an arc is drawn.

Further, the stiff end includes the pilot pin, the pilot pin link up the one end of connecting piece, and with the connecting piece rotates to be connected, the expansion end arrives the distance of pilot pin is adjustable and can wind the pilot pin rotates.

Based on the technical scheme, the positioning needle plays a role of an axis and is used for fixing the position of the circle center. And the setting of such pilot pin is difficult for stabbing the drawing paper when drawing the circle.

Furthermore, the connecting piece is provided with first opening along its length direction, there is the expansion end along open-ended extending direction swing joint in the first opening, first opening is provided with the scale along open-ended extending direction, the expansion end be provided with can with the expansion end is located first locating hole on the connecting piece.

Based on the technical scheme, the connecting piece is provided with scales for determining the radius of the drawn circle, the movable end is moved to the required scales, then the movable end is fixed on the connecting piece through the first positioning hole, and the movable end drives the connecting piece to move around the fixed end relatively so as to draw the circle.

Furthermore, the movable end is a folded plate, the folded plate is movably connected with the connecting piece, a first positioning hole is formed in one end of the folded plate and located in the first opening, the folded plate is located on the connecting piece, a second opening is formed in the connecting piece along the length direction of the folded plate, a second positioning hole and a center line are formed in the other end of the folded plate, the second positioning hole is communicated with the center line, the second positioning hole and the center line are located in the second opening, and the second positioning hole is used for limiting the position of a pen and communicating the position of the pen with the scale on the connecting piece through the center line.

Based on the technical scheme, the first positioning hole is used for fixing the position of the folded plate so that the folded plate does not move, and the second positioning hole is used for fixing the distance from the pen point to the positioning needle.

Furthermore, a communicating groove is formed in the connecting piece, and the folded plate is located in the communicating groove and slides in the communicating groove.

Based on the technical scheme, the folded plate slides in the communication groove to adjust the distance from the second positioning hole to the positioning needle, so that circles with different sizes are selected to be drawn.

Further, the stiff end still includes a location section of thick bamboo, the pilot pin is located inside the location section of thick bamboo and link up the location section of thick bamboo with the connecting piece.

Based on the technical scheme, the positioning cylinder is used for limiting the position of the positioning needle to swing, the positioning needle is fixed, the lower end of the positioning needle penetrates through the positioning cylinder and the connecting piece to be fixed on a drawing needing to draw a circle, and the circle center is positioned.

Furthermore, the location section of thick bamboo includes barrel and cover, the barrel can be dismantled and connect the cover, the pilot pin upper end is located in the cover, the pilot pin lower extreme is located in the barrel.

Based on the technical scheme, the positioning cylinder is divided into the cylinder body and the cylinder cover, so that the positioning needle is conveniently arranged in the cylinder body and then the cylinder cover is covered.

The beneficial effects of the utility model reside in that:

the utility model discloses simple structure, convenient to carry, the equipment of being convenient for can draw the big circle of handing over fast, and does not take place the skew, and can not stab the drawing paper.

Drawings

The specific structure of the present invention is given by the following embodiments and the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the circle tool provided by the present invention.

Fig. 2 is a schematic view of a fixed end of the circle tool provided by the present invention.

FIG. 3 is a schematic view of a positioning pin of the circle drawing tool provided by the present invention

In fig. 1-3, the list of components represented by the various reference numbers is as follows:

1. the fixed end 11, the positioning cylinder 111, the cylinder body 112, the cylinder cover 12, the positioning needle 2, the movable end 21, the first positioning hole 22, the second positioning hole 23, the central line 3, the connecting piece 31, the first opening 32, the second opening 33 and the communicating groove.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the illustrated embodiments are provided to explain the present invention and not to limit the scope of the invention.

Examples

As shown in fig. 1-3, a circle tool comprises a fixed end 1, a movable end 2 and a connecting piece 3, wherein the movable end 2 is wound around the fixed end 1, one end of the connecting piece 3 is rotatably connected with the fixed end 1, and the other end of the connecting piece 3 is provided with the movable end 2, the distance between which is adjustable, of the fixed end.

It can be understood that set up the calibrated scale on the connecting piece, stiff end 1 is used for fixing a position the centre of a circle on the drawing, the hole that the pen was inserted in the expansion end setting is used for inserting the pen, the centre of a circle is read to the scale on the distance accessible connecting piece of inserting the pen hole.

Further, stiff end 1 includes pilot pin 12, pilot pin 12 link up the one end of connecting piece 3, and with connecting piece 3 rotates and is connected, the expansion end 2 extremely the distance of pilot pin 12 is adjustable and can wind pilot pin 12 rotates.

Further, connecting piece 3 is provided with first opening 31 along its length direction, there is loose end 2 along open-ended extending direction swing joint in the first opening 31, first opening 31 is provided with the scale along open-ended extending direction, loose end 2 be provided with can with loose end 2 is located first locating hole 21 on the connecting piece 3.

Optionally, the first positioning hole 21 is fixed on the connecting member by a bolt.

Optionally, a thread is disposed on the first positioning hole 21, and the first positioning hole is fixed at the first opening 31 by a bolt and a nut.

Further, the movable end 2 is a folded plate, the folded plate is movably connected to the connecting member 3, a first positioning hole 21 is formed in one end of the folded plate, the first positioning hole 21 is located in the first opening 31, the first positioning hole 21 is used for positioning the folded plate on the connecting member 3, a second opening 32 is formed in the connecting member 3 along the length direction of the folded plate, a second positioning hole 22 and a center line 23 are formed in the other end of the folded plate, the second positioning hole 22 is communicated with the center line 23, the second positioning hole 22 and the center line 23 are located in the second opening 32, and the second positioning hole 22 is used for limiting the position of a pen and is communicated with scales on the connecting member 3 through the center line 23.

Further, a communication groove 33 is provided in the connector 3, and the flap is located in the communication groove 33 and slides in the communication groove 33.

Further, the fixed end 1 further comprises a positioning tube 11, and the positioning needle 12 is located inside the positioning tube 11 and penetrates through the positioning tube 11 and the connecting piece 3.

It can be understood that the positioning needle 12 is arranged to cling to the inner wall of the positioning barrel 11, and the lower end of the positioning barrel 11 clings to the connecting piece 3 and can limit the shaking of the positioning needle 12.

It will be appreciated that the tip of the pin, which has just passed through the connector, does not extend a certain length to affect the effect of the circle and the radius of the circle being drawn.

Further, the positioning cylinder 11 comprises a cylinder body 111 and a cylinder cover 112, the cylinder body 111 is detachably connected with the cylinder cover 112, the upper end of the positioning needle 12 is located in the cylinder cover 112, and the lower end of the positioning needle 12 is located in the cylinder body 111.

Optionally, an external thread is disposed at the lower end of the cylinder cover 112, and a matching thread groove is disposed on the cylinder 111, so that the cylinder cover 112 is screwed to the cylinder 111.

The working principle is as follows: the position of the folded plate on the connecting piece 3 is adjusted according to the radius of the drawn circle, the first positioning hole 21 is fixed at the corresponding position of the first opening through a bolt and a nut, the circle center position is found, the positioning cylinder and the positioning pin are inserted into the corresponding hole of the connecting piece 3, then the positioning pin is fixed on one hand, the pen is inserted into the second positioning hole on the other hand, and the pen is moved to move relative to the positioning cylinder along with the connecting piece 3 and draw the required circle.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a circle drawing tool, its characterized in that includes stiff end (1), winds stiff end (1) pivoted expansion end (2) and connecting piece (3), connecting piece (3) one end is rotated and is connected stiff end (1), the other end of connecting piece (3) is provided with extremely the distance adjustable of stiff end (1) expansion end (2).

2. The tool for drawing circles of claim 1, characterized in that the fixed end (1) includes a positioning pin (12), the positioning pin (12) penetrates one end of the connecting piece (3) and is rotatably connected with the connecting piece (3), and the distance from the movable end (2) to the positioning pin (12) is adjustable and can rotate around the positioning pin (12).

3. The tool for drawing circles of claim 2, characterized in that the connecting member (3) is provided with a first opening (31) along the length direction thereof, the first opening (31) is movably connected with a movable end (2) along the extending direction of the opening, the first opening (31) is provided with a scale along the extending direction of the opening, and the movable end (2) is provided with a first positioning hole (21) capable of positioning the movable end (2) on the connecting member (3).

4. Tool according to claim 3, characterized in that said movable end (2) is a flap which is movably connected to said connecting element (3), a first positioning hole (21) is arranged at one end of the folded plate, the first positioning hole (21) is positioned in the first opening (31), the first positioning hole (21) is used for positioning the folded plate on the connecting piece (3), the connecting piece (3) is provided with a second opening (32) along the length direction thereof, the other end of the folded plate is provided with a second positioning hole (22) and a center line (23), the second positioning hole (22) is communicated with the central line (23), the second positioning hole (22) and the central line (23) are positioned in the second opening (32), the second positioning hole (22) is used for limiting the position of the pen and is communicated with the scale on the connecting piece (3) through the center line (23).

5. Tool according to claim 4, characterized in that a communication groove (33) is provided on the connecting element (3), the flap being located in the communication groove (33) and sliding in the communication groove (33).

6. The tool according to claim 2, wherein the fixing end (1) further comprises a positioning cylinder (11), and the positioning pin (12) is located inside the positioning cylinder (11) and penetrates through the positioning cylinder (11) and the connecting piece (3).

7. The circle drawing tool according to claim 6, wherein the positioning cylinder (11) comprises a cylinder body (111) and a cylinder cover (112), the cylinder body (111) is detachably connected with the cylinder cover (112), the upper end of the positioning needle (12) is positioned in the cylinder cover (112), and the lower end of the positioning needle (12) is positioned in the cylinder body (111).