KR20180081864A - Compass - Google Patents

Abstract

The present invention relates to a compass capable of increasing the maximum rotational angle between a needle leg and a pen leg. According to the present invention, the compass comprises: a body; the needle leg and the pen leg coupled to the body; a needle holder coupled to a terminal of the needle leg; a pen holder coupled to a terminal of the pen leg, and a fixing needle installed in the needle holder. The needle leg comprises an in-needle joint, a body connecting needle leg joint, an out-needle joint, a needle holder connecting needle leg joint, and a needle leg restriction part to restrict the out-needle joint within the in-needle joint. The pen leg comprises an in-needle joint, a body connecting pen leg joint, an out-pen joint, a pen holder connecting pen leg joint, and a pen leg restriction part to restrict the out-pen joint within the in-pen joint.

Description

Compass {Compass}

The present invention relates to a compass, and more particularly, to a compass used when a circle is drawn by fixing a point and rotating the point by 360 degrees by a radius of the circle.

When constructing a circle, a point is fixed, and then a point spaced by a radius of the circle is rotated 360 degrees. In this way, a compass is used as a drafting tool for drawing a circle.

FIG. 13 is a perspective view of a conventional compass, and FIGS. 14 and 15 are sectional views of a pivotal position restricting region of a conventional compass, respectively.

The conventional compass includes a substantially cylindrical body 111, a pen leg 150 pivotably coupled to the body 111, and a formed leg bridge 150 fixed to the body 111, A rotation position restricting portion 190 for restricting a rotation position of the pen leg 150 and a rotation stop position restricting portion 190 for restricting the rotation position of the pen leg 150, (112), and a grip portion (113) coupled to the upper end of the body (111).

The body 111 is formed such that a rear partition 111d and a front partition 111c are disposed in parallel with the body front plate 111a and a region between the body rear plate 111b and the rear partition 111d (Not shown) is formed during the pen leg rotation.

The pen leg 150 is coupled to a rotating body 193 to be described later.

The rotation position restraining unit 190 includes a rotating shaft 191 provided in a region between the body back plate 111b and the rear partition 111d and a rotary shaft 191 disposed between the body front plate 111a and the front partition 111c, A rotary shaft 193 coupled to the rotating shaft 191, a winding drum 194 coupled to the drum shaft 192, and a leaf spring 195 provided inside the winding drum 194, A guide hole 196 provided on the needle bar 120, a fastener 197 provided on the pen leg 150 and a wire 198 wound on the winding drum 194.

The drum shaft 192 is coupled to the rotary shaft 191 so as to rotate together with the rotary shaft 191.

One end of the plate spring 195 is fixed to the drum shaft 192, and the other end thereof is fixed to the winding drum 194. The leaf spring 195 urges the wire 198 which is weak and untensioned to such an extent that the elastic force accumulated in the leaf spring 195 when the pen leg 150 is rotated does not return the pen leg 150 back to the original position, ) Of the outer circumferential surface.

The wire 198 is fixed to the fixture 197 via the guide hole 196.

The operation of the rotation position restrainer 190 having such a structure will be described below.

When the pen leg 150 is rotated along the direction away from the needle pedal 120, the rotary body 193 and the rotary shaft 191 rotate.

When the rotary shaft 191 rotates, the drum shaft 192 rotates.

When the drum shaft 192 rotates, the wire 198 is unwound from the winding drum 194. Then, the elastic force is accumulated in the leaf spring 195 while the winding drum 194 rotates.

On the other hand, when the pen leg 150 is rotated along a direction approaching the needle bar 120, the rotary body 193 and the rotary shaft 191 rotate in opposite directions.

When the rotary shaft 191 rotates in the opposite direction, the drum shaft 192 also rotates in the opposite direction.

When the drum shaft 192 is rotated in the opposite direction, the wire 198 is again wound on the winding drum 194 by the elastic force accumulated in the leaf spring 195.

The fixed needle 112 is fixed to the end of the needle pedal 120.

A method of using a conventional compass having the above-described configuration will be described as follows. It is assumed that the pen 201 is attached to the pen holder 180 for convenience of explanation.

First, the pen leg 150 and the needle leg 120 are rotated by an angle corresponding to the radius of the circle. The movement of the pen leg 150 and the needle pedal 120 in the state where the pen leg 150 and the needle pedal 120 are rotated is disturbed by the rotation position restraining part 190, It is possible to maintain the rotation angle between the needle bar 120 and the needle bar 120.

Next, in a state where the fixed needle 112 is fixed on the ground, the pen leg 150 is rotated to draw a circle.

However, according to the conventional compass, since the fixed needle 112 is fixed to the needle pedal 120 and the pen holder 180 is fixed to the pen leg 150, There is a problem that the vertical state of the pen 201 and the fixed needle 112 with respect to the ground can not be stably maintained when the rotation angle is changed.

When the inclination angles of the pen 201 and the fixed needle 112 with respect to the ground become large, the operation of rotating the compass becomes difficult and the contact force of the fixed needle 112 and the pen 201 against the ground is decreased, The second problem is that it is difficult.

Since the needle pedal 20 is fixed to the body 11 and only the pen leg 50 can be rotated, the maximum rotation angle between the needle pedal 20 and the pen leg 50 is reduced.

As a related prior art, there is a Korean Utility Model Publication Public Disclosure Publication No. 1996-0013673 (published on May 17, 1996, entitled "Compass equipped with means for measuring the radius of a win"), A technique relating to a compass of a display device is disclosed.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to stably maintain the vertical state of the pen and the fixed needle relative to the ground even when the rotation angle between the needle pedal and the pen leg changes, To provide a compass that can be used.

According to an aspect of the present invention, there is provided a needle holder including a body, a needle foot and a pen leg coupled to the body, a needle holder coupled to an end of the needle pedal, a penholder coupled to an end of the pen leg, And a body connected to the body, the body having a fixed needle attached to the body, the needle bridge having a needle joint whose one end is rotatably coupled to the body, a body connecting needle joint which is rotatably coupled to the body on the outside of the needle joint, An acupuncture joint rotatably coupled to the body connecting acupressure foot joint, acupuncture holder acupuncture joint having one end rotatably coupled to the acupuncture joint, and acupressure foot restraint for restraining the acupuncture joint to the acupuncture joint Have wealth; A pen-leg joint having one end rotatably coupled to the body, and a body-connecting pen-leg joint rotatably coupled to the body at an outer side of the pen-inside joint, wherein one end is rotatable on the body- And a pen-leg restraint part for restricting the pen-shaped joint to the pen-joint, wherein the pen-joint-joint pen-leg joint is pivotally connected to the pen- Wherein the needle holder includes a needle holder tube portion in the form of a tube and a needle holder jigger arm extending from a side of the needle holder tube portion so as to be disposed along a direction perpendicular to the needle holder tube portion, Wherein the needle holder includes a needle holder formed to extend from a side surface of the needle holder tube portion so as to have a shorter length than the long needle arm, the needle holder jaw is rotatably coupled to the needle joint, A pivotally coupled to the leg joint; Wherein the penholder comprises a tubular penholder tube portion and a penholder long arm extending from a side surface of the pen holder tube portion so as to be disposed along a direction perpendicular to the pen holder tube portion and a long section shorter than the penholder long arm, Wherein the pen holder jig is rotatably coupled to the pen joint, and the pen holder jig is rotatably coupled to the pen-holder connecting pen leg joint. It is accomplished by a compass.

The acupuncture needle joint having one end rotatably coupled to the outer joint and the other end formed with a connecting rod is provided with an acupressure needle joint connected to the needle holder so that the radius of the circle to be controlled can be finely adjusted, A needle holder rotatably coupled to the needle holder and a connecting pipe formed at the other end of the needle holder, and a needle holder connected to the connecting rod so that the connecting rod enters the needle holder; The needle bar may include a spring installed inside the coupling pipe, a spring for elastically supporting the connecting rod to the needle holder under the connection of the needle holder, and a control unit for controlling the entry length of the connecting rod with respect to the connecting pipe, And a radial fine adjustment portion provided with a radius fine adjustment knob provided in a needle holder connecting joint of the needle holder.

In order to stably maintain the rotation angle between the pen leg and the needle pad, the needle pad restraining portion includes a rubber-like needle pad-restraining pad disposed between the oversea joint and the needle-like joint, And an acupuncture and an external joint for fastening the invasive joint and the invasive joint so as to be in close contact with the invasive joint and the acupuncture joint; Wherein the pen restraint portion comprises a rubber pen-leg restraining pad disposed between the pen-shaped joint and the pen-in-pen joint, and a pen-leg restraining pad disposed between the pen- And an inner and outer joints of the pen.

Further, in order to adjust the elastic contact force with respect to the ground surface of the fixed needle, the needle bearing restraining portion may be formed in a state of close contact between the inflated and inflated joints and a close contact state between the inflated and inflated joints Restraining said invasive articulation to said invasive articulation so as to selectively manipulate said invasive articulation; Wherein the pen restraint part restrains the pen outer joint to the pen-in-the-pen joint so that the pen-leg restraining part can selectively operate the close contact state in which the in-pen joint and the pen outer joint are in close contact with each other and the close contact state in which the in- It is desirable to constrain.

Therefore, according to the present invention, both ends of the pen-and-socket joints and the pen-and-outer joints which are mutually restrained are rotatably coupled to the body and the pen holder, and both ends of the interbedded joint and the invasive joint are rotatably coupled to the body and needle holder, respectively , It is possible to stably maintain the vertical state of the pen and the fixed needle against the ground even if the rotation angle between the needle foot and the pen leg is changed (the vertical state of the pen holder and the needle holder is stably maintained on the ground) It is possible to increase the maximum rotation angle between the pen legs (both the pen leg and the needle foot can be pivoted).

When the vertical state of the pen and the fixing needle against the ground can be stably maintained, the operation of rotating the compass is facilitated, and the contact between the fixed needle and the pen is maintained.

1 is a perspective view of a compass according to an embodiment of the present invention,
2 is an exploded perspective view of a compass according to an embodiment of the present invention,
3 is a cross-sectional view taken along the line A-A 'in Fig. 1,
FIG. 4 is a cross-sectional view of a needle-foot elastic support according to an embodiment of the present invention;
FIG. 5 is an exploded perspective view of an acupressure foot elastic support according to an embodiment of the present invention, FIG.
Figures 6, 7 and 8 illustrate a method of using a compass according to an embodiment of the present invention,
9 is a perspective view of a compass according to another embodiment of the present invention,
10 is an exploded perspective view of a compass according to another embodiment of the present invention,
11 is a sectional view taken along the line B-B 'in Fig. 9,
12 is a sectional view taken along the line C-C 'in Fig. 9,
13 is a perspective view of a conventional compass,
Figs. 14 and 15 are sectional views of the pivotal position restricting portion region of the conventional compass, respectively.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is an exploded perspective view of a compass according to an embodiment of the present invention. FIG. 3 is a sectional view taken along line A-A 'of FIG. 1, and FIG. 4 is a cross- FIG. 5 is an exploded perspective view of an acupressure foot elastic support according to an embodiment of the present invention. FIG.

The compass according to an embodiment of the present invention includes a body 11, a pedal leg 20 and a pen leg 50 rotatably coupled to the body 11, A pen holder 80 coupled to the end of the pen leg 50 and a fixed needle 12 provided on the needle holder 70. The needle holder 70 is attached to the end of the body 11, A grip portion 13 coupled to the upper end, and a fixed needle 12 coupled to the needle holder 70. [

The body 11 has a body front plate 11a and a body back plate 11b arranged side by side.

The needle pedal 20 includes a needle joint 21 having one end coupled to the body 11, a body connecting needle joint 22 coupled to the body at the outside of the needle joint 21, And an acupuncture joint 24 connected to the acupuncture joint 23 at one end and acupuncture points 24 and 25 connected to the acupuncture needle joint 24 at the acupoint holder joint 24, A fine regulating portion 30 and a needle restraint portion 40 for restraining the invasion outer joint 23 to the intramuscular joint 21. [

The interlabial joint 21 is rotatably coupled to the body 11 in the following manner.

First, one end of the inflatable joint 21 is inserted between the body front plate 11a and the body back plate 11b.

Next, the rotary shaft 54 is installed using pins, rivets or the like so as to pass through the body front plate 11a, the needle joint 21 and the body back plate 11b. In the following description of the present invention, the rotary shaft 54 is installed in the same manner.

The body connecting leg joints 22 are rotatably coupled to the body 11 at the outside of the inflatable joint 21. [ The body connecting crotch joint 22 is rotatably coupled to the body 11 in the same manner as the needle joint 21.

Although the body connecting leg joint 22 is shown as an arc shape, it is needless to say that it can be formed in a straight shape.

The outboard joint 23 is formed in a cross-sectional shape, and a pair of outboard joint guide slots 23a are formed on the side surface along the longitudinal direction.

A step is formed on the inner peripheral surface of the ostial-articulated joint prolongation hole 23a such that the needle-like joint 21 has a relatively small hole size.

The outboard joint 23 is pivotally coupled to the body connecting leg joint 22 at one end.

The needle holder connecting leg joints 24 and 25 each have a needle holder connecting upper and lower leg joint 24 which is rotatably coupled to one end of the outer needle joint and one end of which is rotatably coupled to the needle holder inner joint arm 73 (25) connected to the needle holder.

A connecting rod 24a is formed in the lower section of the acupuncture needle holder 24 on the needle holder connection.

The acupressure foot joint 25 under the acupressure holder connection is provided with a coupling pipe 25a in the upper section and a male screw portion is formed on the outer surface of the coupling pipe 25a.

The acupressure foot joint 25 with the needle holder connection is installed so that the connecting rod 24a enters the connection pipe 25a.

The radial fine adjustment portion 30 includes a spring 31 installed inside the connection pipe 25a, a tube-shaped radial fine adjustment knob 32 coupled to the outer surface of the connection pipe 25a, And a support ring 33 provided inside the housing 32. [

The spring 31 is installed so as to resiliently support the connecting rod 24a to the acupressure foot 25 with the needle holder connected.

The radial fine adjustment knob 32 has a female thread formed in a part of its inner surface, and a locking step 32a is formed in a terminating area of the female thread.

A method of installing the radial fine adjustment knob 32 and the support ring 33 will be described as follows.

First, the support ring (33) is installed inside the radius fine adjustment knob (32).

Next, the support ring 33 and the radial fine adjustment knob 32 are passed along the longitudinal direction of the connecting rod 24a.

Next, a snap ring 34 is installed on the connecting rod 24a.

Next, the connecting rod 24a enters the inside of the connecting pipe 25a.

Next, the radial fine adjustment knob 32 is moved and screwed to the connection pipe 25a.

The radial fine adjustment knob 32 is rotated so that the support ring 33 comes into contact with the engagement step 32a and the snap ring 34 contacts the support ring 33 and the connection rod 24a is resiliently supported by the spring 31. [ .

When the connecting rod 24a is elastically supported by the spring 31, the radial fine adjustment knob 32 is rotated to adjust the length of the connecting rod 24a to the connecting pipe 25a.

The needle point restraining portion 40 includes a needle point and restraint pad 41 disposed between the outer and inner joints 23 and 21 and an inner and outer joints (42).

The needle restraint restraining pad 41 has a needle restraining long hole 41a formed along the longitudinal direction.

The needle point restraining pad 41 is disposed between the invasion outer joint 23 and the needle inner joint 21 such that the needle point restraining long hole 41a is aligned with the outer cannulated articulating elongated hole 23a.

The acupuncture joint 42 includes a pair of acute joint coupling bolts 42a which are passed through the acupuncture joint guide elongated hole 23a and the acupressure leg restraining slot 41a to be connected to the acupuncture joint 21, And a needle bolt support plate 42b mounted on the needle joint engagement bolt 42a inside the guide long hole 23a.

According to the needle restraint restricting portion 40 having such a configuration, both sides of the needle point restraint pad 41 can be brought into close contact with the invasion outer joint 23 and the needle inner joint 21 by the coupling force of the needle joint bolt 42a .

The pen leg 50 includes a pen inner joint 51 whose one end is coupled to the body 11, a body connecting pen leg joint 52 which is coupled to the body 11 outside the pen inner joint 51, An out-of-pen joint 53 which is coupled to the connecting pen leg joint 52, a pen-and-leg connecting joint 55 which is rotatably coupled to the pen outer joint 53 at one end, And a pen restricting portion 60 for restricting the pen rest.

The pen-in-joint 51 is rotatably coupled to the body 11 in the same manner as the needle-like joint 21.

The body connecting pen leg joint 52 is rotatably coupled to the body 11 from the outside of the pen intra-joint 51. The body connecting pen leg joint 52 is rotatably coupled to the body 11 in the same manner as the needle joint 21. [

Although the body connecting pen leg joints 52 are shown as circular arc shapes, they may be formed in a linear shape.

The out-of-pen joints 53 are formed in a cross-sectional shape, and a pair of out-of-penis joint guide slots 53a are formed on the side surfaces along the longitudinal direction.

In the inner peripheral surface of the out-of-pen pointing articulated elongated hole 53a, a step is formed such that the inner diameter of the pen-in-joint 51 is relatively small.

The pen-shaped joint 53 is rotatably coupled to the body-connected penis joint 52 at one end.

The pen-and-leg-linking joint 55 is pivotally coupled to the pen-and-outer joint 53 at one end.

The pen restraint portion 60 includes a pen restraint pad 61 disposed between the pen outer joint 53 and the pen inner joint 51 and a pen restraint pad 61 interposed between the pen inner joint 51 and the pen outer joint 53, (62).

The pen-leg restraining pad 61 has a pen-leg restraining slot 61a formed along the longitudinal direction thereof.

The pen-leg restraining pad 61 is disposed between the pen-and-outer joint 53 and the pen-in-pen joint 51 so that the pen-leg restraining slot 61a is aligned with the pen-

The inner and outer joints 62 of the pen are provided with a pair of in-pen joint coupling bolts 62a which are coupled to the inner joint 51 of the pen through the long outer joint hole 53a and the pen-leg restraining slot 61a, And a pen leg bolt support plate 62b mounted on the pen-joint-coupling bolt 62a inside the guide slot 53a.

According to the pen restraint portion 60 having such a configuration, both sides of the pen restraint pad 61 can be brought into close contact with the pen outer joint 53 and the pen inner joint 51 by the coupling force of the pen interlocking bolt 62a .

The needle holder 70 includes a needle holder tube portion 71 in the form of a tube and a needle holder extension arm 72 extending from the side of the needle holder tube portion 71 so as to be disposed along a direction perpendicular to the needle holder tube portion 71 (73) extending from the side surface of the needle holder tube portion (71) so as to be disposed in parallel with the needle holder long arm (72).

The needle holder 73 is formed to have a shorter length than the needle holder long arm 72.

The needle holder 70 having such a configuration is configured such that the needle holder long arm support 72 is rotatably coupled to the needle joint 21 and the needle holder 73 is rotated to the needle support 25 Lt; / RTI >

The pen holder 80 includes a tube-shaped pen-holder tube portion 81, a penholder long arm-like guide arm 82 extending from the side of the pen-holder tube portion 81 so as to be disposed along a direction perpendicular to the pen-holder tube portion 81, 82 extending from the side surface of the penholder tube portion 81 so as to be arranged side by side.

The penholder land cover 83 is formed to have a shorter length than the penholder land cover 82.

The pen holder 80 having such a configuration is rotatably coupled to the pen-and-socket joint 51 and the pen-and-holder joint arm 83 is rotatably coupled to the pen-and-pen-jointed pen-foot joint 55.

The fixed needle 12 is forcedly held in the needle holder tube portion 71.

The grip portion (13) is screwed to the body (11).

A method of using a compass according to an embodiment of the present invention having the above-described configuration will now be described with reference to FIGS. 6 to 8. FIG. It is assumed that the pen 201 is attached to the pen holder 80 for convenience of explanation.

First, the pen leg 50 and the needle pedal 20 are rotated by an angle corresponding to the radius of the circle. It is possible to stably maintain the vertical state of the pen 201 and the fixed needle 12 with respect to the ground even if the rotation angle between the needle pedal 20 and the pen leg 50 is changed as shown in Figs. have.

The movement of the pen leg 50 and the needle pedal 20 in the state in which the pen leg 50 and the needle pedal 20 are rotated causes the operation of moving the needle foot restraint pad 41 on both sides of the invasion joint 23, Since the frictional force between the pen leg 50 and the pad leg 20 is disturbed by the frictional force between the pen leg 50 and the pen leg restraining pad 61 and the frictional force between the pen pen joint 53 and the pen pen joint 51, The rotation angle can be stably maintained.

By adjusting the entry length of the connecting rod 24a with respect to the connecting pipe 25a by turning the radius fine adjustment knob 32 while rotating the pen leg 50 and the needle pedal 20, 12 and the pen 201, that is, the radius of the circle to be touched can be finely adjusted.

Next, in a state in which the fixed needle 12 is fixed on the ground, the pen leg 50 is rotated to draw a circle.

Meanwhile, in the above-described embodiment, the out-of-pen joint 53 is constrained to the in-pen joint 51 using the frictional force of the pen-leg restraining pad 61 made of a rubber material disposed between the pen outer joint 53 and the pen inner joint 51 The explant joint 23 is restrained to the intramedullary joint 21 by using the frictional force of the needle pad restraint pad 41 made of rubber disposed between the outer joint 23 and the intramedullary joint 21, 12, the pen-leg restraining pad 61 and the needle-restraining restraining pad 41 may be omitted, and the pen-leg restraining part and the needle restraining restricting part may be constituted to implement the present invention.

FIG. 9 is an exploded perspective view of a compass according to another embodiment of the present invention, FIG. 11 is a sectional view taken along line B-B 'of FIG. 9, and FIG. 9 is a sectional view taken along the line C-C 'in Fig.

In the case of the compass according to another embodiment of the present invention, the compass joint 21 ', the outcrop joint 23', the pen joint 51 ', the pen outer joint 53', the needle restraint 40 ' The rest of the configuration except for the restricting portion 60 'is the same as the compass according to the embodiment of the present invention described above. 9 to 12 show the components having the same structure and function as those of the compass according to the embodiment of the present invention by using the same numerals.

The penis joint 21 ', the outer cannon joint 23', the pen inner joint 51 ', the pen outer joint 53', the needle restricting portion 40 'and the pen leg restraint portion (not shown) according to another embodiment of the present invention 60 ') will be described as follows.

The needle bearing 21 'is formed with a needle bearing knob seating groove 21'a on the side opposite to the pen outer joint 53'.

The outboard joint 23 'is formed in a cross-sectional shape, and a pair of outboard joint guide slots 23'a are formed on the side surface along the longitudinal direction.

On the inner circumferential surface of the ostial-articulated joint prolongation hole 23'a, a step is formed such that the needle-like joint 21 'is relatively small in hole size.

The pentagonal joint 51 'is formed with a pen leg knob seating groove 51'a on the side opposite to the outboard joint 23'.

The out-of-pen joints 53 'are formed in a cross-sectional shape, and a pair of out-of-penis joint guide slots 53' a are formed on the side surfaces along the longitudinal direction.

A stepped portion is formed on the inner circumferential surface of the out-of-pen pointed joint elongated hole 53'a such that the in-pen joint 51 'is relatively small in hole size.

The needle point restraining part 40 'is provided with a needle foot contact adjustment knob 41' provided in the needle point knob seating groove 21'a and a knee joint adjusting knob 41 'which passes through the ostial articulation guide long hole 23'a and the needle joint 21' A needle-foot knob coupling bolt 42 'screwed to the needle coupling adjusting knob 41', and a knuckle joint 42 'screwed to the knuckle joint 21' through the knuckle joint guide slot 23'a, Bolt 43 'and a needle bridge bolt support plate 44' mounted on the needle joint bolt 43 'in the inside of the exploiting joint guide slot 23'a.

The head of the needle-and-leg knob-coupling bolt 42 'is formed to be larger than the small-sized hole size of the explant joint-guiding elongated hole 23'a.

According to the needle restraint restricting portion 40 'having the above-described configuration, the needle bearing 21' and the outboard joint 23 'are formed by a method of rotating clockwise or counterclockwise the needle- And the contact unblocking state in which the close contact state between the inflatable joint 21 and the exploiting joint 23 is released can be selectively operated.

The pen-leg restraining portion 60 'is provided with a pen-leg contact adjustment knob 61' provided in the pen-leg knob seating groove 51'a and a pen-leg contact adjustment knob 61 'which passes through the pen-shaped joint guide slot 53'a and the pen- A pen-leg knob coupling bolt 62 'screwed to the pen-leg adjustment control knob 61', and an in-pen joint coupling bolt 62 'which is coupled to the pen- And a pen leg bolt support plate 64 'mounted on the pen-joint-coupling bolt 63' within the pen-out-of-penis joint elongated hole 53'a.

The head of the pen leg knob coupling bolt 62 'is formed to be larger than the small hole size of the out-of-penis joint guide slot 53'a.

According to the pen-leg restraining part 60 'having the above-described configuration, the pen-joint 51' and the pen-outside joint 53 'are formed by a method of rotating the pen-leg-close adjustment knob 61' clockwise or counter- Of the pen-shaped joint 51 'and the pen-and-outer joint 53' are released from the contact-releasing state.

A method of using a compass according to another embodiment of the present invention will now be described.

The pen-leg contact adjustment knob 61 'and the needle-foot contact adjustment knob 61' are brought into close contact between the pen-in-joint 51 'and the pen-shaped joint 53' and between the inflatable joint 21 ' (41 ').

Then, the pen leg 50 'and the needle leg 20' are rotated by an angle corresponding to the radius of the circle to be next.

Next, the pen-leg contact adjustment knob 61 'and the needle-foot tightness adjustment are made so that the pen-joint 51' and the pen-shaped joint 53 'and the intramedullary joint 21' Operate the knob 41 '.

The pen leg 50 'and the needle foot 20' approach each other in a state in which the in-pen joint 51 'and the pen pen joint 53' are in close contact with each other and the inflatable joint 21 ' Since the operation is interrupted by the frictional force between the exploiting joint 23 'and the infill joint 21' and the frictional force between the pen pen joint 53 'and the pen pen joint 51', the pen leg 50 ' It is possible to stably maintain the rotation angle between the first and second cams 20 '.

Next, in a state where the fixed needle 12 is fixed on the ground, the pen leg 50 'is rotated to draw a circle.

As described above, according to the embodiment of the present invention, both ends of the pen-shaped joints 51 and 51 'and the pen-shaped joints 53 and 53' are rotatably coupled to the body 11 and the penholder 80, 20 'and 20' are rotatably coupled to both the body 11 and the needle holder 70 at both ends of the interdental space joints 21 and 21 'and the outer joints 23 and 23' The vertical state of the pen 201 and the fixed needle 12 with respect to the ground can be stably maintained even if the rotation angle between the pen legs 50 and 50 ' It is possible to increase the maximum rotation angle between the needle pedestals 20 and 20 'and the pen legs 50 and 50' (the pen leg and the needle pedal can be both rotated).

When the vertical state of the pen 201 and the fixed needle 12 with respect to the ground can be stably maintained, the operation of rotating the compass is facilitated and the contact force of the fixed needle 12 and the pen 201 against the ground is maintained, .

Further, by adding the radius fine adjustment unit 30, the distance between the fixed needle 12 and the pen 201, that is, the radius of the circle to be touched can be finely adjusted.

A needle-like foot restraint pad 41 made of a rubber material is disposed between the outer joint 23 and the inner needle joint 21 and both surfaces of the needle point restraint pad 41 are closely contacted with the outer joint 23 and the intramedullary joint 21 And a pen-leg restraining pad 61 made of a rubber material is disposed between the pen-outside joint 53 and the pen-inside joint 51. The pen-leg restraining pad 61 is provided on both sides of the pen- The out-of-pen joint 53 is restrained to the pen-in-the-joint 51 and the outboard joint 23 is fixed to the in-the-brachet joint 21 by constituting the pen-leg restraining portion 60 to be in close contact with the joint 53 and the pen- And the pivot angle between the pen leg 50 and the needle pedal 20 can be stably maintained (the operation in which the pen leg and the needle pedal approach each other can be performed on both sides of the needle foot restraint pad and on the outside of the cancellous joint And the frictional forces between the intramedullary joints and the frictional forces between the penis legs and the penis joints.

In addition, it is possible to select and operate the contact state in which the intracutaneous joint 21 'and the outcarting joint 23' are in close contact with each other and the close contact state in which the intimate contact between the intracutaneous joint 21 ' And the contact state between the pen-in-pen joint 51 'and the pen-outside joint 53' and the close contact between the pen-in-pen joint 51 'and the pen-outside joint 53' The out-of-pen joint 53 'is restrained to the pen-in-the-joint 51' and the out-door joint 23 'is fixed to the in-bony joint 21' by configuring the pen restraint portion 60 ' And the pivotal angle between the pen leg 50 'and the pontoon leg 20' can be stably maintained (the motion in which the pen leg and the pontoon bridge approach each other is not limited to the outboard joint and the bite joint 20 ' And the frictional force between the pen and the pen joint).

11, 111: body 12, 112: fixed needle
13, 113: grip section 20, 120:
21: Involuntary joint 23:
24: Needle holder connection Upper joint joint 25: Needle holder connection Lowered joint
30: Radius fine adjustment part 31: Spring
32: Radius fine adjustment knob 40: Needle restraint part
41: Needle restraint pad 42: Internal and external joints
50, 150: pen leg 51: pen joint
53: Penetration joint 55: Penetration connection Penis joint
60: pen restraint part 61: pen restraint pad
62: inner and outer joints of the pen 70: needle holder
71: Needle holder Tube 72: Needle holder Jangjiam
73: Needle Holder Jiam 80: Pen Holder
81: Penholder tube portion 82: Penholder Jiji Temple
83: Penholder complex Jiam 190: Rotation position restraining part
191: Rotary shaft 192: Drum shaft
193: rotating body 194: winding drum
195: leaf spring 198: wire

Claims (4)

A compass having a body, a needle foot and a pen leg coupled to the body, a needle holder coupled to an end of the needle foot, a penholder coupled to an end of the pen leg, ,
The needle-shaped bridge includes a needle-like joint having one end rotatably coupled to the body, a body-connecting needle-shaped joint which is rotatably coupled to the body at an outer side of the needle-shaped joint, An acupuncture joint having one end connected to the acupuncture joint so as to be rotatable and a acupressure foot restraining part for restricting the acupuncture joint to the acupuncture joint;
A pen-leg joint having one end rotatably coupled to the body, and a body-connecting pen-leg joint rotatably coupled to the body at an outer side of the pen-inside joint, wherein one end is rotatable on the body- And a pen-leg restraint part for restricting the pen-shaped joint to the pen-joint, wherein the pen-joint-joint pen-leg joint is pivotally connected to the pen-
Wherein the needle holder includes a needle holder tube portion in the form of a tube and a needle holder jigger arm extending from a side of the needle holder tube portion so as to be disposed along a direction perpendicular to the needle holder tube portion, Wherein the needle holder includes a needle holder formed to extend from a side surface of the needle holder tube portion so as to have a shorter length than the long needle arm, the needle holder jaw is rotatably coupled to the needle joint, A pivotally coupled to the leg joint;
Wherein the penholder comprises a tubular penholder tube portion and a penholder long arm extending from a side surface of the pen holder tube portion so as to be disposed along a direction perpendicular to the pen holder tube portion and a long section shorter than the penholder long arm, Wherein the pen holder jig is rotatably coupled to the pen joint, and the pen holder jig is rotatably coupled to the pen-holder connecting pen leg joint. Compass. The method according to claim 1,
The acupuncture needle-connecting acupuncture joint has one end connected to the acupuncture joint so as to be rotatable and the other end having a connecting rod formed thereon. The acupuncture needle joint has a first end rotatably coupled to the acupuncture needle holder complex, And an acupressure foot joint having a connecting pipe formed therein and connected to the acupuncture holder so that the connecting rod enters the connecting pipe;
The needle bar may include a spring installed inside the coupling pipe, a spring for elastically supporting the connecting rod to the needle holder under the connection of the needle holder, and a control unit for controlling the entry length of the connecting rod with respect to the connecting pipe, Further comprising a radius fine adjustment portion having a radius fine adjustment knob provided in a needle holder connecting joint of the needle holder. 3. The method according to claim 1 or 2,
Wherein the needle restraint restricting portion includes a needle-like restraining pad made of a rubber material disposed between the invasion outer joint and the needle inner joint, And an internal and external joint fastening portions for fastening the internal and external joints;
Wherein the pen restraint portion comprises a rubber pen-leg restraining pad disposed between the pen-shaped joint and the pen-in-pen joint, and a pen-leg restraining pad disposed between the pen- And an inner and outer joints of the pen. 3. The method according to claim 1 or 2,
Wherein the needle bearing restraining portion is configured to be capable of selectively engaging the cancellation joint in a state of close contact between the invasive joint and the invasive articular joint and a state of close contact between the invasive joint and the invasive articular joint, Restraint;
Wherein the pen restraint part restrains the pen outer joint to the pen-in-the-pen joint so that the pen-leg restraining part can selectively operate the close contact state in which the in-pen joint and the pen outer joint are in close contact with each other and the close contact state in which the in- Wherein the compass is configured to restraint.

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