KR100654131B1 - The multipurpose compass - Google Patents

Abstract

Multi-purpose compasses are provided to draw various shapes including polygons like circles and ovals, stars, and streamlines according to the shape of a guide groove by rotating a grip unit with one hand. The multi-purpose compasses comprise a grip unit(100) formed at the upper part; a fixed shaft unit(110) extended from the grip unit and fixed at the lower side; a moving shaft unit(130) connected to the grip unit and rotated around the fixed shaft unit; a guide member(150) detachably installed to a body of the fixed shaft unit; a hanging protruded piece(170) of which one end is bent and hung to a guide groove(151) formed on the upper surface of the guide member and the other end is connected to the moving shaft unit. A user draws figures according to the shape of the guide groove. The guide member is attached to/detached from the body of the fixed shaft unit by a hollow bolt and a nut thread-joined to the bolt.

Description

Multipurpose compass {THE MULTIPURPOSE COMPASS}

1 is a perspective view showing an embodiment of the present versatile compass,

2 is an exploded perspective view of the fixed shaft of FIG.

3A and 3B are exploded perspective views and cross-sectional views of the flow shaft of FIG. 1;

4 is a perspective view showing another embodiment of the present versatile compass,

5 is an exploded perspective view of the fixed shaft of FIG.

6A and 6B are exploded perspective views and cross-sectional views of the flow shaft of FIG. 4;

7a to 7d is a perspective view showing an embodiment of a guide member according to the present invention,

8A and 8B are cross-sectional views of the bolts and nuts of FIGS. 2 and 5,

9 to 12 are perspective views showing still another embodiment of the present multi-purpose compass,

 13A and 13B are cross-sectional views of the engaging stone piece moving member and the engaging stone piece of FIGS. 9 and 10 to 12, respectively.

14 is a cross-sectional view of the rotating member of FIG.

FIG. 15 is a cross-sectional view of the adhesion member and the fixing pin of FIG. 12.

<Description of the symbols for the main parts of the drawings>

100; Gripping portion 110; Fixed Shaft,

111; Push pin, 130; Flow Shaft,

150; Guide member 151; Guide groove,

153; Fasteners, 155; Receiving,

170; Jammed piece, 171; Bending Machine,

173; Insert, 190; Internal hollow bolt,

191; Hollow, 193,373; Screw,

195; Incision 210; nut,

211; Taper, 250; Elastic Spring,

270; Writing utensils, 290; Fixture,

310; Fixing member, 330; Block stone moving member,

350; Rotating member, 351; Shaft Coupling,

353; Turn, 357; Jaw,

390; Contact member, 391; Transparent Material,

393; Anti-slip member, 395; Guide,

410; Graduation.

The present invention relates to a multipurpose compass, and more particularly, it is possible to easily draw various shapes such as stars, flowers, clouds, as well as polygons such as triangles, squares, and the like, and the size of the shapes. Provides a selectively adjustable effect.

In general, the compass has been used to draw a circle or other arc consisting of a fixed shaft fixed to the lower portion and a flow shaft to perform the construction by performing a rotational movement around the fixed shaft.

In addition, when a polygonal figure is to be drawn using a conventional compass configured as described above, a circle of a corresponding size is first constructed, and then the circle is divided by an arc equalization method, and the respective polygonal points are connected to each other. The only way to draw the shape was to cause considerable inconvenience.

Therefore, in order to solve such a problem, the same technology as the compass of Korean Utility Model Registration No. 20-0319353 has been presented.

Specifically, the registration proposal is composed of a movable member that forms a cone-shaped angle member having an angle on the fixed shaft and is pin-coupled (axially coupled) with respect to the fixed shaft, drawing a polygonal figure instead of a circle or an arc. If desired, the movable table is rotated on the fixed shaft or screwed according to the angle corresponding to the polygon through the angle display portion indicated by the surface of the angle member formed on the upper side of the fixed shaft, and then fixed to the end of the movable shaft. Each point is marked through the combined notes.

Then, the displayed points can be connected again to construct a desired polygonal figure.

Although the registration proposal configured as described above solves the inconvenience of having to draw a polygonal figure by applying an arc equalization method after drawing a circle, the angle according to the desired polygon is still through the angle display part of the angle member. It is inconvenient to not only have to adjust the number of points, and to mark each point corresponding to the points, but also to make the process of connecting the points separately.

In addition, the registration proposal can be constructed to some extent in the case of simple polygons such as triangles or squares, but it is almost impossible to actually construct a somewhat complicated figure such as a star shape or a petal shape. It has

In addition, the conventional compass and the registration design had the inconvenience of having to repeat the same operation again when the size of the same shape changes, that is, to reduce or enlarge the same shape.

Therefore, there is a need for a new compass that can solve the above problems.

The present invention was created in view of the above necessity, and an object of the present invention is to provide a multi-purpose compass that can easily construct various shapes such as stars, flowers, clouds, as well as polygons such as triangles and squares.

In addition, another object of the present invention is to exert a high concentration and can easily draw a complicated shape that can be drawn only through a number of operations in only one operation, multi-purpose can minimize the errors that may occur in the drawing It is in providing a compass.

In addition, another object of the present invention is a multi-purpose that can easily reduce or enlarge the same shape with a simple operation without performing the same operation even when the user selectively changes the size of the shape while drawing various shapes easily It is in providing a compass.

The present invention for achieving the above object, the upper gripping portion, the fixed shaft portion extending from the holding portion fixed to the lower surface, and the flow shaft portion connected to the holding portion to rotate relative to the fixed shaft portion It includes, but the guide member is installed to be detachable to the body of the fixed shaft portion, one end is bent and caught in the guide groove formed on the upper surface of the guide member, the other end is provided with a hooking piece connected to the flow shaft portion Characterized in that the drawing is made according to the shape of the guide groove is characterized in that the multi-purpose compass.

Here, the gripping portion is formed to be rotatably extended to the fixed shaft portion 360 ° relative to the fixed shaft portion, the flow shaft portion is connected to a predetermined portion of the gripping portion axially coupled to the gripping portion It is preferable that the vertical movement is made.

On the other hand, the fixed shaft portion is fixedly extended to the holding portion integrally, the flow shaft portion is preferably coupled by an annular rotating member mounted to the holding portion or the body of the fixed shaft portion.

Here, the rotating member is formed of an axial coupling portion extending from one outer peripheral portion to axially couple the flow shaft portion, and a turning portion extending from the other outer circumference to rotate the flow shaft portion 360 ° with respect to the gripping portion or the fixed shaft portion. More preferred.

The guide member may be detachably attached to the body of the fixed shaft part by an internal hollow bolt and a nut screwed to the bolt.

Here, the bolt is inserted into the fastening hole formed in the center of the guide member, the hollow portion of the bolt is preferably made to accommodate the body of the fixed shaft portion.

In addition, the overall shape of the guide groove is made of any one of a circular, elliptical, polygonal, star or streamline shape, the internal structure of the guide groove is preferably made to correspond to the insertion piece formed at the end of the bent portion of the engaging piece. Do.

In addition, a portion of the guide groove is more preferably provided with a receiving hole for receiving the insertion piece of the bent portion.

And, it is preferable that the locking piece is directly connected to the body of the flow shaft portion, or directly connected to the body of the flow shaft by shaft coupling.

On the other hand, the locking piece is preferably an annular locking piece is mounted to the body of the flow shaft portion is fixedly connected to the outer circumference of the eastern member, or is connected to the outer circumference of the locking member piece moving member in the axial coupling.

In addition, when the locking piece is connected by axial coupling, it is more preferable that the elastic spring is further placed between the locking piece and the flow shaft portion or between the locking piece and the locking piece moving member.

In addition, the flow shaft is preferably a fixture for accommodating and fixing the writing instrument is formed at the end, or a separate fixing member for accommodating and fixing the writing instrument is axially coupled to the end.

Here, the flow shaft portion or the fixing member is both ends, it is more preferable that the elastic spring is disposed between the both ends to provide a predetermined elastic force to the writing instrument accommodated and fixed to the fastener or the fixing member.

And, it is provided with a screw portion on the outer periphery of the fixing pin formed on the lower end of the fixed shaft portion, and provided with a close contact member is screwed to the screw portion to be in close contact with the lower surface to prevent the fixed shaft portion from being drawn off from the center of construction More preferred.

In addition, the contact member is more preferably made of a transparent member of the upper screwed to the screw portion of the fixing pin, and a lower anti-slip member bonded to the transparent member to prevent slipping.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in detail as follows. Of course, the scope of the present invention is not limited to the following examples, and various modifications can be made by those skilled in the art without departing from the technical gist of the present invention.

1 is a perspective view showing an embodiment of the present multi-purpose compass, Figure 2 is an exploded perspective view of the fixed shaft portion of Figure 1, Figures 3a and 3b is an exploded perspective view and sectional view of the flow shaft portion of Figure 1, Figure 4 4 is an exploded perspective view of the fixed shaft portion of FIG. 4, FIGS. 6A and 6B are an exploded perspective view and a cross-sectional view of the flow shaft portion of FIG. 4, and FIGS. 7A to 7D illustrate the present invention. 8A and 8B are cross-sectional views of the bolts and nuts of FIGS. 2 and 5, and FIGS. 9 to 12 are perspective views showing still another embodiment of the present general-purpose compass. 13A and 13B are combined cross-sectional views of the engaging stone piece moving member and the engaging stone piece of FIGS. 9 and 10 to 12, FIG. 14 is a cross-sectional view of the rotating member of FIG. 11, and FIG. 15 is a close contact member and the fixing pin of FIG. 12. It is a combined section of.

First, the multi-purpose compass is connected to the holding portion 100, the holding shaft portion 110, extending from the holding portion 100, the holding portion 100, the rotary motion relative to the fixed shaft portion 110 The flow shaft 130, the guide member 150 which is attached to the fixed shaft portion 110, the locking projection piece 170 that is caught in the guide groove 151 of the guide member 150, and the guide member 150 It is configured to include an internal hollow bolt 190 and nut 210 to be attached to and detached from the fixed shaft portion (110).

More specifically, the gripping portion 100 is rotationally coupled 113 with the fixed shaft portion 110 as shown in Figures 1, 4, 9, 10 and 12, the fixed shaft portion by the rotation of the user It is configured to be rotated 360 ° relative to the 110, the flow shaft 130 is connected to the predetermined portion of the grip portion 100 by the shaft coupling 115 to move up and down relative to the grip portion 100 It may be configured to be possible.

That is, when the fixed shaft portion 110 is located at the center (hereinafter, referred to as the drawing center) to be drawn, the holding portion 100 is held in one hand and the holding portion 100 is turned to the fixed shaft portion. It rotates by a predetermined angle relative to the 110, and accordingly the flow shaft 130 is connected to the holding portion 100 also has a rotational movement and up and down movement according to the shape of the guide groove 151 Will be done.

On the other hand, as shown in Figure 11, the gripping portion 100 may be fixedly extended integrally without rotating coupling 113 to the fixed shaft portion (110).

As such, when the gripping portion 100 and the fixed shaft portion 110 are fixedly extended integrally, the flow shaft portion 130 may have an annular shape mounted to the body of the gripping portion 100 or the fixed shaft portion 110. It is coupled by the rotating member 350.

Here, the rotating member 350 extends from one outer circumference and is axially coupled by the flow shaft 130 and the pin joint 333 and axially coupled to the other by the outer circumference. 130 is made of a gripping portion 353 to enable a 360 ° rotation with respect to the holding portion 100 or the fixed shaft portion 110.

That is, the shaft coupling portion 351 is coupled to the shaft shaft 130 to the vertical movement of the flow shaft 130, the turning portion 353 is a user with the grip portion 100, respectively Holding by the hand is made to be able to rotate relative to the gripping portion (100).

In addition, the rotating member 350 is mounted on the body of the holding portion 100 or the upper body of the fixed shaft portion 110 to be configured to rotate when an external force is applied to the turning portion 353 in one direction. As shown in FIGS. 11 and 14, a locking jaw 357 is formed at a predetermined portion of the body of the gripping portion 100 or the fixed shaft portion 110, and is fitted to the locking jaw 357. Can be. However, if the rotating member 350 can perform a rotational movement with respect to the gripping portion 100 or the fixed shaft portion 110 at a predetermined position, the rotating member 350 is limited to the custom coupling only Say no.

On the other hand, the fixed shaft portion 110 may be configured in a cylindrical shape as shown in Figure 1, in order to more securely fixed to the guide member 150 to the fixed shaft portion 110 to 4 to 9 to As shown in FIG. 12, it is preferable to configure a polygonal shape.

By forming the fixed shaft portion 110 in the shape of a polygon in this way, it is possible to prevent the shaking or movement of the guide member 150 in the drawing, it is possible to prevent the drawing error.

In addition, the fixed shaft portion 110 has a fixed pin 111 is integrally coupled to the lower portion of the fixed shaft portion 110 is located at the center of the drawing when the holding portion 100 or the rotating member 350 rotates to hold the center. Done.

Here, the fixing pin 111 may be made of a metal material 111a as shown in FIGS. 1 and 2, or may be made of a rubber material 111b as shown in FIGS. 4 and 5.

And, the end of the flow shaft 130 is formed with a fastener 290 for receiving and fixing the writing instrument 270, as shown in Figs. 1 and 3a, b, or writing instrument (Fig. 4 and 6a, b) A separate fixing member 310 capable of receiving and fixing 270 is axially coupled 115 by a pin joint 333.

In other words, the fixing member 310 is formed at the end of the flow shaft portion 130 to receive and fix the writing instrument 270 by being formed at the end of the flow shaft portion 130 or axially coupled to the end of the flow shaft portion 130. ), The writing instrument 270 is accommodated and fixed.

The fluid shaft 130 configured as described above may be rotated 360 ° in the horizontal direction by the rotation of the gripping part 100 or the rotating member 350, and the gripping part 100 or the rotating member 350 may also be rotated. By the shaft coupling 115 with the vertical direction, that is, the vertical movement is possible.

On the other hand, the guide member 150 which is attached to and detached from the body of the fixed shaft portion 110 is formed in the upper surface and is formed in the center and the guide groove 151 that is caught in the bent portion 171 of the engaging stone piece 170 It consists of a fastening hole 153 for receiving the internal hollow bolt 190.

Here, the overall shape of the guide groove 151 is made of any one of a circular, oval, polygonal, star or streamline shape, the internal structure of the guide groove 151 is the bent portion of the locking piece (170) ( It is made to correspond to the insertion piece 173 formed at the end of the 171.

In addition, it is preferable that a portion of the guide groove 151 is further provided with a receiving hole 155 for receiving the insertion piece 173 of the bent portion 171.

More specifically, the guide groove 151 is preferably made of any one of the shape of a circle, oval, polygon, star or streamline.

That is, it may be made in the shape of a triangle as shown in Figure 2, or may be made of a petal shape as shown in Figure 4 as well as in various shapes, such as oval, pentagon, hexagon or star as shown in Figure 7a to 7d. Of course it can be done.

In addition, the internal structure of the guide groove 151 is configured to correspond to the shape of the insertion piece 173 formed on the end of the engaging stone piece 170.

That is, as shown in Figures 1, 4, 9 to 12 to form a spherical insertion piece 173 at the end of the engaging stone piece 170, it can be caught by receiving the insertion piece 173. It is preferable to form the internal structure of the guide groove 151 so that.

However, the shape of the insertion piece 173 is not necessarily limited to the spherical shape, and if he is caught inside the guide groove 151 can move smoothly along the guide groove 151, hemispherical or cylindrical It is sufficient, and its specific shape does not matter.

In addition, it is more preferable that a part of the guide groove 151 is provided with a receiving hole 155 for accommodating the insertion piece 173 into the guide groove 151.

That is, the inner structure of the guide groove 151 is formed in the shape of the lower light bar ((上 上 上), the guide groove 151 so that the insertion piece 173 made of the spherical shape can be inserted for the first time A portion of the receiving hole 155 is to be provided.

The locking piece 170 configured as described above is directly fixed to the body of the flow shaft 130 as shown in FIG. 1 or 4 or connected to the body of the flow shaft 130 by direct shaft coupling 115, or FIG. 9 or 10 to 12 is fixedly connected to the outer circumference of the annular engaging stone piece moving member 330 mounted on the body of the flow shaft portion 130 or the shaft coupling to the outer circumference of the engaging stone piece moving member 330 (115) ).

Here, when the engaging stone piece 170 is connected to the shaft coupling 115, between the engaging stone piece 170 and the flow shaft portion 130 or between the engaging stone piece 170 and the engaging stone piece moving member 330 By further placing the elastic spring 250, the bent portion 171 of the locking piece 170 is caught by the guide groove 151 is easily separated from the guide groove 151 even if a predetermined impact is applied from the outside. It is preferable to comprise so that a thing can be prevented.

However, the internal structure of the insertion piece 173 and the guide groove 151 of the locking piece 170 is not independent but interdependent, the elastic spring 250 is the locking piece 170 and the When placed between the fluid shaft portion 130 or the locking piece 170 and the locking piece moving member 330, even if the shape of the insertion piece 173 is not characterized as a spherical shape, the elastic spring 250 Since the elastic force of the guide groove 151 is not easily separated from the guide groove 151, the shape of the insertion piece 173 is different from the shape of the bent portion 171 or the internal structure of the guide groove 151 is necessarily It does not need to be characterized by the shape of the lower part.

More specifically, the locking piece piece moving member 330 is configured to be mounted by screwing on the body of the flow shaft 130 as shown in Figures 9 to 12, 13a, b.

In addition, an outer circumferential side of the locking piece piece moving member 330 is fixedly coupled to one end of the locking piece piece 170 as shown in FIGS. 9 and 13A, or the locking piece piece 170 as shown in FIGS. 10 to 12 and 13B. It is configured to be coupled to the shaft 115 by one end of the pin joint 333.

In addition, the locking stone piece moving member 330 is able to move up and down the body of the flow shaft 130 according to the tightening and loosening of the screw 331, so the locking stone piece 170 is also the locking stone piece moving member ( Position movement is freely adjusted with the up and down movement of the 330, and correspondingly by adjusting the position of the guide member 150 by using the internal hollow bolt 190 and the nut 210 to be permanently installed in the same size By using one guide member 150 having a shape, it is possible to selectively enlarge or reduce the size of the shape.

That is, when the position of the locking piece piece moving member 330 and the position of the guide member 150 is raised from the original position, the same shape can be relatively enlarged and constructed, and if it is lowered, the same shape is relatively reduced and reduced. You can do it.

Therefore, as shown in FIGS. 9 to 12, the fixed shaft portion 110 and the portion of the body of the flow shaft 130 are preferably provided with graduations 410 formed at equal intervals.

By providing the scale 410 as described above, it is possible to accurately adjust the movement position of the locking piece piece moving member 330 and the guide member 150, and thus it is possible to precisely operate the enlargement and reduction ratio.

On the other hand, the fastening hole 153, as shown in Figure 2 when the fixed shaft portion 110 is made of a cylindrical shape is preferably made of a cylindrical shape, as shown in Figure 4 the fixed shaft portion ( When 110 is formed in the shape of a rectangle, it is preferable that the shape is made in the shape of a rectangle.

On the other hand, the guide member 150 configured as described above is the fixed shaft portion 110 by the internal hollow bolt 190 and the nut 210 screwed to the bolt 190 as shown in FIG. Detachable to the body.

Here, the inner hollow bolt 190 has a size and shape that can be accommodated in the fastening hole 153 of the guide member 150, the hollow portion 191 of the bolt 190 is the fixed shaft portion It is made of a size that can accommodate the body of (110).

In addition, the nut 210 is configured to screw the bolt 190 and to fix the guide member 150 to the fixed shaft portion (110).

More preferably, as shown in FIGS. 8A and 8B, a screw 193 having an inwardly inclined surface corresponding to the nut 210 is formed at a lower end of the inner hollow bolt 190, and the nut 210 is formed. The outward taper 211 corresponding to the screw portion 193 may be formed to further tighten the tightening force.

In addition, unlike FIG. 8A, as shown in FIG. 8B, a constant cutting portion 195 may be formed on the threaded portion 193 of the bolt 190 to obtain a stronger tightening force.

On the other hand, when drawing along the guide groove 151 having a variety of shapes, the writing tool 270 (see FIG. 1) or the fluid shaft part 130 accommodated and fixed to the fixture 290 of the fluid shaft part 130. The force applied to the writing instrument 270 (see FIG. 4) accommodated and fixed to the fixing member 310 axially coupled to the end of 115 may not be kept constant, resulting in errors in drawing.

Accordingly, a predetermined elastic force is applied to the writing tool 270 accommodated and fixed to the fastener 290 by placing the elastic spring 250 between both ends of the flow shaft 130 as shown in FIGS. 3A and 3B. 6 to maintain a constant drawing force, or both ends of the fixing member 310 as shown in Figure 6a, b, the elastic spring 250 is placed between the both ends of the similarly accommodated in the fixing member 310 It is preferable to provide a fixed elastic force to the fixed writing instrument 270 to maintain a constant drawing force.

However, the fixing member 310 is formed integrally with the writing instrument 270 or a fixing tool 290 for receiving and fixing the writing instrument 270 is formed at the lower end thereof.

As such, by placing the elastic spring 250 on a portion of the flow shaft 130 or the fixing member 310, it is possible to prevent the occurrence of errors in the drawing.

On the other hand, as shown in Figure 12 and 15 provided with a screw portion 373 on the outer periphery of the fixing pin 111 formed on the lower end of the fixed shaft portion 110, the upper transparent to be screwed to the screw portion 373 The fixed shaft portion 110 is constructed by a contact member 390 formed of a non-slip member 393 bonded to the member 391 and the transparent member 391 and adhered to the lower surface to prevent slipping. It is more preferable to comprise so that it may not separate from the center.

More specifically, as shown in FIG. 11, when the gripping part 100 is fixedly extended to the fixed shaft part 110, the gripping part 100 and the turning part 353 of the rotating member 350 are respectively handed. Since the fixed shaft portion 110 is not easily separated from the center of the drawing even when a fixed rotational force is applied, the grip portion 100 rotates to the fixed shaft portion 110 as shown in FIGS. 9, 10, and 12. When the coupling 113 is extended, the gripping part 100 may be drawn with only one hand, so that the fixed shaft part 110 may be separated from the center of drawing when a rotation force is applied.

Accordingly, as shown in FIG. 15, a predetermined screw part 373 is formed on the outer circumference of the fixing pin 111 formed at the end of the fixed shaft part 110, and the upper transparent member 391 is screwed to the screw part 373. And it is more preferable that the contact member 390 is composed of a non-slip member 393 is bonded to the transparent member 391 and at the same time in close contact with the ground to prevent slipping.

Here, the transparent member 391 is formed with a female screw portion 373b corresponding to the male screw portion 373a formed on the outer circumference of the fixing pin 111 at the central portion thereof, and the non-slip member 393 is the transparent member. A guide hole 395 larger than the outer diameter of the fixing pin 111 is provided at a portion corresponding to the female screw portion 373b of the 391.

When the fixing pin 111 is fastened to the contact member 390 configured as described above, the end of the fixing pin 111 protrudes slightly forward through the transparent member 391 and the anti-slip member 393. It is desirable to be.

That is, the fixing pin 111 and the contact member 390 should be fastened so that the end of the fixing pin 111 may be in contact with the drawing center of the lower surface.

In addition, the anti-slip member 393 is preferably made of a material having a very high friction force, such as rubber in order to minimize the deviation from the center of construction of the fixed shaft portion 110, the transparent member 391 is the fixing pin Even when the 111 is screwed, it is preferable that the end of the fixing pin 111 is made of a transparent member 391 such as transparent acrylic in order to allow the user to visually check the end of the fixing pin 111.

However, the bonding method of the upper transparent member 391 and the lower anti-slip member 393 is in accordance with the conventional bonding method.

As described above, the upper grip portion, a fixed shaft portion extending from the holding portion fixed to the lower surface, and a flow shaft portion connected to the holding portion to rotate relative to the fixed shaft portion, the fixed shaft portion The guide member is detachably installed on the body of the guide, one end is bent and hooked in the guide groove formed on the upper surface of the guide member, the other end comprises a locking piece piece connected to the flow shaft portion is as follows. Provides the same effect.

First, the gripping portion is rotatably coupled to the fixed shaft portion to rotate 360 ° with respect to the fixed shaft portion, and the flow shaft portion is axially coupled to the gripping portion to enable vertical movement with respect to the gripping portion. By holding and rotating the gripping portion, according to the specific shape of the guide groove, it is possible to easily construct various shapes such as circular, elliptical, polygonal, star or streamlined.

Secondly, the gripping portion is fixedly extended to the fixed shaft portion, and the flow shaft portion is coupled by the annular rotating member mounted to the gripping portion or the body of the fixed shaft portion, so that the user rotates the gripping portion and the rotating member. By holding and rotating each with one hand, the fixed shaft portion is not easily separated from the center of drawing, thereby providing an effect of minimizing drawing error.

Third, the guide member is inserted into the fastening hole formed at the center of the guide member, and the guide member is connected to the body of the fixed shaft by a hollow screw having a hollow portion for receiving the body of the fixed shaft. By attaching and detaching, the binding force with the fixed shaft portion is increased and the detachment method is simple and simplified, so that the user can replace the guide member having the desired shape in a short time, thereby providing the effect of securing the drawing efficiency.

Fourth, the internal structure of the guide groove is configured to correspond to the insertion piece formed at the end of the bent portion of the engaging piece, and the guide groove further comprises a receiving hole for accommodating the insertion piece of the bent portion, It provides an effect of preventing the bent portion from being separated from the guide groove.

Fifth, the user connects the upper and lower positions of the locking piece piece moving member and the guide member by connecting the locking piece piece directly to the outer circumference of the locking piece moving member mounted on the body of the flow shaft part without directly connecting the locking piece to the body of the flow shaft part. By adjusting, ie, moving the positions of the locking piece piece moving member and the guide member upward, the shape of the guide groove is enlarged and drawn, and moving the positions of the locking piece piece moving member and the guide member downward, Since the shape of the guide groove is reduced and drawn, the same shape provides an effect of expanding or reducing the simple shape.

Sixth, when the locking piece is axially coupled to the flow shaft portion or the locking stone piece moving member by placing an elastic spring between the locking stone piece and the fluid shaft portion or the locking stone piece and the locking stone piece moving member, It prevents the bent portion from flowing inside the guide groove to prevent an error that may occur during the drawing and at the same time provides an effect of preventing the locking pieces in the load due to rotation.

Seventh, the fastener or a separate fixing member for receiving and fixing writing instruments at the end of the flow shaft portion is configured to be axially coupled, by placing the elastic spring between the both ends of the flow shaft portion or the fixing member, the fastener or Providing a predetermined elastic force to the writing instruments accommodated and fixed to the high-precision material provides an effect of significantly improving the precision of the drawing.

Eighth, by selectively provided with a screw portion on the outer circumference of the fixing pin of the fixed shaft portion, further comprising an adhesive member consisting of an upper transparent member screwed to the screw portion and a lower anti-slip member in close contact with the lower surface, The fixed shaft portion is prevented from slipping out of the drawing center to minimize the drawing error, etc., and provides an effect of easily drawing complex and various shapes with only one hand.

In addition, the present invention is not limited to what has been described above and illustrated in the drawings, and of course, more modifications and variations are possible within the scope of the following claims.

Claims (15)

A holding part of the upper part, a fixed shaft part extending from the holding part and fixed to the lower surface, and a moving shaft part connected to the holding part and rotating around the fixed shaft part, and detachable from the body of the fixed shaft part. The guide member is installed so as to be bent and hooked to the guide groove formed on the upper surface of the guide member, the other end is provided according to the shape of the guide groove is provided with a hook piece connected to the flow shaft, The guide member is a multi-purpose compass, characterized in that detachable to the body of the fixed shaft portion by an internal hollow bolt and a nut screwed to the bolt. The method of claim 1, The bolt is inserted into the fastening hole formed in the center of the guide member, the hollow portion of the bolt is a multipurpose compass, characterized in that made to accommodate the body of the fixed shaft portion. A holding part of the upper part, a fixed shaft part extending from the holding part and fixed to the lower surface, and a moving shaft part connected to the holding part and rotating around the fixed shaft part, and detachable from the body of the fixed shaft part. The guide member is installed so as to be bent and hooked to the guide groove formed on the upper surface of the guide member, the other end is provided according to the shape of the guide groove is provided with a hook piece connected to the flow shaft, The locking projection piece is fixed to the outer circumference of the annular locking piece moving member mounted on the body of the flow shaft portion, or a multi-purpose compass characterized in that connected to the outer circumference of the locking stone piece moving member. The method of claim 3, Multi-purpose compass, characterized in that the elastic spring is further placed between the engaging stone piece and the fluid shaft portion or the engaging stone piece and the engaging stone piece moving member when the engaging stone piece is connected by the axial coupling. A holding part of the upper part, a fixed shaft part extending from the holding part and fixed to the lower surface, and a moving shaft part connected to the holding part and rotating around the fixed shaft part, and detachable from the body of the fixed shaft part. The guide member is installed so as to be bent and hooked to the guide groove formed on the upper surface of the guide member, the other end is provided according to the shape of the guide groove is provided with a hook piece connected to the flow shaft, A screw portion is provided on the outer circumference of the fixing pin formed at the lower end of the fixed shaft portion, and the contact member is screwed to the screw portion to be in close contact with the lower surface to prevent the fixed shaft portion from being drawn off from the drawing center. Versatile compasses. The method of claim 5, The close contact member is a multi-purpose compass, characterized in that consisting of an upper transparent member that is screwed with the screw portion of the fixing pin, and a lower anti-slip member bonded to the transparent member to prevent slipping. delete delete delete delete delete delete delete delete delete

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