KR102441973B1 - 3-Dimensional drawing pen that is easy to separate and combine - Google Patents

Abstract

The present invention relates to a 3D drawing pen, and more specifically, to a 3D drawing pen easy to separate and couple which responds to internal thermal deformation and is easy to replace parts. To this end, provided is a 3D drawing pen which pulls, melts, and extrudes a filament (10) so as to enable drawing on a plane or space. The 3D drawing pen comprises: a head part (120) including a nozzle (110), a heater (127), a heater bobbin (200), a cover tip (300), and an intermediate hook part (400); and a body part (130), wherein the head part (120) and the body part (130) are configured to be separated or coupled from or to each other. (i) The head part (120) includes: (i-1) the heater bobbin (200) having the nozzle (110) detachably coupled to one end; (i-2) the cover tip (300) coupled to the other end of the heater bobbin (200) and positioned inside of the head part (120); and (i-3) the intermediate hook part (400) coupled to one surface of the cover tip (300) and having a fixing hook (420) protruding toward the body part (130). (ii) The body part (130) includes: (ii-1) a pin holder (500) which is positioned inside of the body part (130) and has a fixing hook fastening part (530) to which the fixing hook (420) can be fastened; and (ii-2) a separation button (146) which performs unfastening by pressing the fixing hook (420).

Description

3D drawing pen that is easy to separate and combine

The present invention relates to a 3D drawing pen, and more particularly, to a 3D drawing pen that responds to internal thermal deformation and is convenient for separating and combining parts that are easy to replace.

A 3D drawing pen capable of drawing on a plane or space by melt-extruding a filament, which is a synthetic resin material, is being used. In this 3D drawing pen, the filament is continuously supplied in the form of a thin line, melted with an internal heater, and then extruded through a nozzle at the tip. Since the extruded resin solution hardens immediately, it is possible to produce a desired shape as if drawing with a pen in space.

However, the conventional 3D drawing pen has an integrated structure that cannot open a case or a housing. Therefore, if some of the parts were broken, it was difficult to repair, and the entire 3D drawing pen had to be replaced. Additionally, separate tools (such as a screwdriver) were required when attempting to disassemble and reassemble the 3D drawing pen.

In addition, the internal parts are prone to thermal deformation due to the heat of the heater, and the 3D drawing pen often breaks down as users who are not aware of the thermal deformation continue to use it.

And since the conventional 3D drawing pen is in the form of a pen, the filament had to be inserted into the rear end when starting to use it. However, since the filament is supplied in a wound shape, the unwound filament also has a curved shape rather than a straight line. Therefore, the curved filament did not easily enter the nozzle area, and there were many cases where it was caught in the middle.

US Patent No. 9,731,444 (Hand-hels three-dimensional drawing device).

Accordingly, the present invention has been devised to solve the above problems, and the first object of the present invention is to open a case or housing with one touch without a separate tool to open a case or a housing and a 3D drawing pen for convenient separation and coupling. is to provide

It is a second object of the present invention to provide a 3D drawing pen that is convenient for separation and coupling with easy replacement of internal parts.

A third object of the present invention is to provide a 3D drawing pen with convenient separation and coupling that can overcome thermal deformation of internal parts due to heat of a heater.

A fourth object of the present invention is to provide a 3D drawing pen that is convenient for separation and coupling that can be easily entered without a filament being caught.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

In order to achieve the above technical task, in the 3D drawing pen capable of drawing on a plane or space by pulling the filament 10 and melt-extruding it, the nozzle 110, the heater 127, the heater bobbin 200, the cover tip (300) and the head portion 120 including the intermediate hook portion 400 is configured to be separated or coupled to the body portion 130, (i) the head portion 120, (i-1) one end of the nozzle a heater bobbin 200 to which 110 is separated and coupled; (i-2) the other end of the heater bobbin 200 is coupled, the head portion 120, the cover tip 300 is fixed to the inside position; and (i-3) an intermediate hook portion 400 that is coupled to one surface of the cover tip 300, and the fixing hook 420 protrudes toward the body portion 130;

(ii) the body part 130, (ii-1) a pin holder 500 having a fixed hook fastening part 530 to which the position is fixed inside the body part 130 and to which the fixed hook 420 can be fastened ; and (ii-2) a separation button 146 for releasing the coupling by pressing the fixing hook 420; a 3D drawing pen with convenient separation and coupling, characterized in that it includes.

In addition, the cover tip 300 further includes a cover tube 330 into which the other end of the heater bobbin 200 is inserted, and the cover tip 300 and the intermediate hook part 400 are coupled by a cover hook 340 . .

In addition, a pair of fixing hooks 420 is provided on the frame 410 of the intermediate hook unit 400 , and a pair of fixing hooks 420 are respectively disposed above and below the frame 410 , and the separation button 146 is It is disposed on the bottom surface of the body 130 .

In addition, the button arm 147 is integrally formed on the separation button 146 to further protrude, and when the separation button 146 is pressed, the button arm 147 presses the fixing hook 420 to release the fastening.

In addition, the pin holder 500 further includes an inlet tube holder 510 into which the cover tube 330 is inserted at one end and the second inlet tube 570 is inserted at the other end.

In addition, a stopper 515 for determining the insertion position of the cover pipe 330 and the insertion position of the second inlet pipe 570 is further protruded from the inside of the inlet pipe holder 510 .

In addition, a first tapered portion 517 for guiding the filament 10 in the central axis direction is further formed in the stopper 515 , and the cover tube 330 has a first tapered portion 517 for guiding the filament 10 in the central axis direction. 2 A tapered portion 335 is further formed.

In addition, the nozzle fixing part 115 is further press-fitted to the area where the nozzle 110 and the heater bobbin 200 are coupled.

In addition, the rear cover 160 is coupled to the rear end of the body portion 130, the filament inlet 164 is formed; and a first inlet pipe 550 assembled to the filament inlet 164 .

In addition, the second inlet pipe 570 is inserted into the inlet pipe holder 510 of the pin holder 500; further comprising, the second inlet pipe 570 is on the same axis as the first inlet pipe 550 placed and spaced apart from each other.

In addition, it is located between the first inlet pipe 550 and the second inlet pipe 570, the transfer unit 182 for transferring the filament 10; and a motor 180 for transmitting a rotational force to the transfer unit 182 .

According to an embodiment of the present invention, the case or the housing can be opened and separated with one touch without a separate tool. Therefore, there is an advantage that the user can easily replace the nozzle during use, replacement of parts, etc. without specialized skills or knowledge.

In addition, since it is possible to overcome the thermal deformation of the internal parts due to the heat of the heater, it is possible to use it for a long time and to improve durability.

In addition, since the filament can be easily entered without being caught, the inconvenience during use can be greatly improved.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention to be described later. It should not be construed as being limited only to
1 is a perspective view of a 3D drawing pen for convenient separation and coupling according to an embodiment of the present invention;
Fig. 2a is a cross-sectional view of the 3D drawing pen shown in Fig. 1;
Fig. 2b is an enlarged cross-sectional view of part A of Fig. 2a;
3A is an enlarged cross-sectional view of the head part 120 of FIG. 2A;
3B is an enlarged cross-sectional view of part B in FIG. 3A;
4 is a cross-sectional view showing a state in which the head part 120 of FIG. 3A is separated;
5 is an exploded perspective view of the 3D drawing pen shown in FIG. 1;
6 is an exploded perspective view of main parts related to separation and coupling in FIG. 5;
7 is a perspective view of the nozzle 110 and the heater bobbin 200 in FIG. 6;
Figure 8 is a perspective view of the cover tip 300 of Figure 6,
9 is a perspective view of the intermediate hook part 400 of FIG. 6;
10 is a perspective view of the pin holder 500 of FIG. 6 .

Hereinafter, with reference to the accompanying drawings, the embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment is capable of various changes and may have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, it should not be understood that the scope of the present invention is limited thereby.

The meaning of the terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. On the other hand, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood as including the plural expression unless the context clearly dictates otherwise, and terms such as "comprises" or "have" refer to the specified feature, number, step, action, component, part or these It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Terms defined in a commonly used dictionary should be interpreted as having the meaning consistent with the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

configuration of the embodiment

Hereinafter, the configuration of the preferred embodiment will be described in detail with reference to the accompanying drawings. 1 is a perspective view of a 3D drawing pen for convenient separation and coupling according to an embodiment of the present invention. As shown in FIG. 1 , the 3D drawing pen 100 is in the form of a pen as a whole, the nozzle 110 is exposed at the tip, and the filament 10 is supplied to the rear cover 160 .

The head part 120 is detachably coupled to the body part 130 . A ventilation hole 125 is formed in the head part 120 to prevent overheating.

The first, second, and third buttons 140 , 142 , 144 are provided on the upper surface of the body 130 , and the first and second LEDs 150 and 155 are provided. The first button 140 may be a button for forward supply of the filament 10 , the second button 142 may be a button for backward supply of the filament 10 , and the third button 144 may be a power button. The first LED 150 indicates an operating state (green: normal, red: error or overheating, etc.), and the second LED 155 indicates a power supply state.

The body part 130 is vertically separated.

FIG. 2A is a cross-sectional view of the 3D drawing pen shown in FIG. 1 , and FIG. 2B is an enlarged cross-sectional view of portion A of FIG. 2A . As shown in FIGS. 2A and 2B , the separation button 146 is used to separate the head part 120 from the body part 130 . The separation button 146 is located on the bottom of the body 130, and the button arm 147 is integrally protruded from the side surface. When the separation button 146 is pressed, the button arm 147 is pressed together and the fixing hook 420 is bent. Due to this, the fixing hook 420 may be separated from the fixing hook fastening part 530 .

As shown in FIG. 2A , the motor 180 is located at the rear end of the 3D drawing pen 100 , and transmits the rotational force to the transfer unit 182 . The motor 180 is capable of forward and reverse rotation, and may be located horizontally or vertically.

The transfer unit 182 includes a reduction gear train and a transfer gear. The feed gear consists of one drive gear and an idle gear, and the filament 10 passes between the drive gear and the idle gear. The filament 10 is transferred while the driving gear is rotated by the motor 180 .

The power cable 184 applies power from the outside to the motor 180 and the circuit board 170 .

3A is an enlarged cross-sectional view of the head unit 120 of FIG. 2A . As shown in FIG. 3A , a nozzle 110 for extrusion is provided at the tip of the head unit 120 , and a heater 127 is configured around the nozzle 110 to melt the filament 10 . In order to discharge heat generated from the heater 127 to the outside, a plurality of vent holes 125 are formed through the side surface.

The heater bobbin 200 is a metal tube, and the nozzle 110 is detachably assembled at one end. A nozzle fixing part 115 is fitted in a region where the nozzle 110 and the heater bobbin 200 are coupled for a firm fixation. The heater bobbin 200 is fitted and fixed to the bobbin locker 210 , and the bobbin locker 210 is assembled to the cover tip 300 .

The cover tip 300 has a cross-section that can completely fill the cross-section of the head portion 120 , and is positioned on the inner surface of the head portion 120 . The other end of the heater bobbin 200 is inserted into the cover tube 330 of the cover tip 300 and fixed.

FIG. 3B is an enlarged cross-sectional view of part B of FIG. 3A . As shown in FIG. 3B , an annular stopper 515 protrudes inwardly from the inside of the inlet pipe holder 510 . A cover tube 330 is fitted to one side of the stopper 515 , and the other end of the heater bobbin 200 is fitted to the cover tube 330 . The second inlet pipe 570 is fitted to the other side of the stopper 515 .

The first tapered portion 517 is formed to be inclined around the inner surface of the stopper 515 so that the filament 10 slides toward the central axis. The first tapered portion 517 is inclined in a direction in which the cross section of the stopper 515 becomes narrower with respect to the direction in which the filament 10 proceeds.

The second tapered portion 335 is in close contact with the first tapered portion 517 and is inclined around the inner surface of the cover tube 330 so that the filament 10 slides toward the central axis. The second tapered portion 335 is inclined in a direction in which the cross section of the cover tube 330 becomes narrower with respect to the direction in which the filament 10 proceeds.

4 is a cross-sectional view illustrating a state in which the head unit 120 of FIG. 3A is separated. 4, the inside of the head part 120 separated from the body part 130 has a nozzle 110, a heater 127, a heater bobbin 200, a cover tip 300, an intermediate hook part ( 400) is located. In addition, the separated body portion 130 has a pin holder 500 , a circuit board 170 , first and second inlet pipes 550 and 570 , a rear cover 160 , a transfer unit 182 , and a motor 180 . Located.

FIG. 5 is an exploded perspective view of the 3D drawing pen shown in FIG. 1 . As shown in FIG. 5 , the circuit board 170 is a length member and includes a control unit (not shown). The control unit receives the input of the first, second, and third buttons 140 , 142 , 144 , and controls the blinking of the first and second LEDs 150 and 155 and the rotation of the heater 127 and the motor 180 . The control unit may be a microcomputer or a CPU.

The second inlet pipe 570 is a metal pipe or a flexible synthetic resin pipe, and one end is fitted into the inlet pipe holder 510 , and the other end is extended to the vicinity of the transfer unit 182 .

The first inlet pipe 550 is a metal pipe or a flexible synthetic resin pipe, and one end is fitted into the filament inlet 164 , and the other end extends to the vicinity of the transfer unit 182 . The first inlet pipe 550 has a length of about 1/3 to 1/4 of that of the second inlet pipe 570 . A driving gear and an idle gear of the transfer unit 182 are positioned between the first and second inlet pipes 550 and 570 .

The side cover 160 is assembled at the rear end of the body 130, and a cable inlet 162 through which the power cable 184 is introduced and a filament inlet 164 through which the filament 10 is introduced are formed.

6 is an exploded perspective view of main parts related to separation and coupling in FIG. 5 . As shown in FIG. 6 , the nozzle 110 , the heater bobbin 200 , the cover tip 300 , the intermediate hook part 400 and the pin holder 500 are assembled from the tip of the 3D drawing pen 100 . When the head part 120 is separated, the intermediate hook part 400 and the pin holder 500 are separated.

7 is a perspective view of the nozzle 110 and the heater bobbin 200 of FIG. 6 . As shown in FIG. 7 , the nozzle 110 is fitted to the heater bobbin 200 , and the nozzle fixing part 115 is fitted around the periphery to increase the fastening force. The heater bobbin 200 is inserted into the bobbin locker 210 . The bobbin locker 210 determines the position of the heater bobbin 200 and is assembled to the cover tip 300 . The nozzle 110 may be replaced with nozzles having various shapes. Since the heater bobbin 200 is made of a metal material, even when the nozzle part 110 is heated, thermal deformation of the heater bobbin 200 can be minimized.

FIG. 8 is a perspective view of the cover tip 300 of FIG. 6 . As shown in FIG. 8 , a cover hole 320 is formed on one side of the cover tip 300 so that the heater bobbin 200 is fitted, and the cover tube 330 is integrally formed on the other side. On both sides of the cover tip 300, cover hooks 340 fastened to the intermediate hook part 300 are integrally formed. The bobbin fastening part 310 forms a closed curve and protrudes integrally to minimize thermal deformation of the heater bobbin 200 and its surrounding parts.

FIG. 9 is a perspective view of the intermediate hook part 400 of FIG. 6 . As shown in FIG. 9 , the intermediate hook portion 400 is in the form of a hollow rectangular frame 410 , and fixing hooks 420 are formed to protrude above and below the frame 410 . The cover hooks 340 are fastened to both sides of the frame 410 .

10 is a perspective view of the pin holder 500 of FIG. 6 . As shown in FIG. 10 , a fixing hook fastening part 530 is formed at the top and bottom, and the fixing hook 420 is fastened. A holder hole 520 is formed on one surface of the pin holder 500 , and an inlet pipe holder 510 is integrally formed on the other surface of the pin holder 500 . The second inlet pipe 570 is fitted to the inlet pipe holder 510 .

Separation and coupling operation of the embodiment

Hereinafter, the separation and coupling operation of the preferred embodiment will be described in detail with reference to the accompanying drawings. First, in a state in which the 3D drawing pen 100 is coupled, the release button 146 is pressed. Then, the button arm 147 moves integrally and presses the middle outer side of the fixing hook 420 to bend the fixing hook 420 . At this time, the fixing hook 420 is separated from the fixing hook fastening portion (530). After that, when the head part 120 is withdrawn by hand, the head part 120 is separated as shown in FIG. 4 .

operation of the embodiment

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the accompanying drawings. First, the filament 10 is inserted into the filament inlet 164 . The filament 10 passes through the first inlet pipe 550 , the transfer unit 182 , and the second inlet pipe 570 . Next, it passes through the first taper 517 of the stopper 515 and the second taper part 335 of the cover tube 330 as shown in FIG. 3B . Even when the end of the filament 10 is curved, the filament 10 may be transferred to the front without being caught due to the first and second tapers 517 and 335 . Then, the filament 10 enters up to the tip of the heater bobbin 200 and the nozzle 110 .

Then, when power is applied by pressing the third button 144 , the heater 127 is heated and the filament 10 inside the nozzle 110 is melted. After sufficient melting is made, the transfer unit 182 is operated by pressing the first button 140 . Due to this, the continuous supply of the filament 10 is made, and the filament 10 melted in the inside of the nozzle 100 is extruded into the nozzle 110 by the rear pressure. Accordingly, the user can hold the 3D drawing pen 100 and solidify a desired shape in space.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a way in combination with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment or may be included as a new claim by amendment after filing.

10: filament, 100: 3D drawing pen,
110: nozzle, 115: nozzle fixing part,
120 ; Head part, 125: vent hole,
127: heater, 130: body part,
140: a first button, 142: a second button,
144: a third button, 146: a release button,
147: button arm, 150: first LED,
155: second LED, 160: rear cover,
162: cable inlet, 164: filament inlet,
170: circuit board, 180: motor,
182: transfer unit, 184: power cable,
200: heater bobbin, 210: bobbin locker (Locker),
300: cover tip, 310: bobbin fastening part,
320: cover ball, 330: cover tube,
340: cover hook, 335: second tapered part,
400: middle hook part, 410: frame,
420: fixed hook, 500: pin holder,
510: inlet pipe holder, 515: stopper,
517: first tapered part, 520: holder hole,
530: fixing hook fastening part, 550: first inlet pipe,
570: a second inlet pipe.

Claims (12)

In the 3D drawing pen capable of drawing on a plane or space by pulling the filament (10) and melt-extruding it,
The nozzle 110, the heater 127, the heater bobbin 200, the cover tip 300, and the head part 120 including the intermediate hook part 400 is configured to be separated or combined with the body part 130,
(i) the head part 120,
(i-1) the heater bobbin 200 to which the nozzle 110 is separated and coupled to one end;
(i-2) the cover tip 300 to which the other end of the heater bobbin 200 is coupled, and the position is fixed inside the head part 120; and
(i-3) the intermediate hook portion 400 that is coupled to one surface of the cover tip 300, and the fixing hook 420 protrudes toward the body portion 130;
(ii) the body portion 130,
(ii-1) a pin holder 500 having a fixing hook fastening part 530 fixed to the inside of the body part 130 and to which the fixing hook 420 can be fastened; and
(ii-2) a separation button 146 for releasing the fastening by pressing the fixing hook 420;
The fixing hook 420 is a convenient 3D drawing pen, characterized in that a pair is provided on the frame 410 of the intermediate hook portion 400. The method of claim 1,
The cover tip 300 further includes a cover tube 330 into which the other end of the heater bobbin 200 is inserted,
The cover tip 300 and the intermediate hook portion 400 are a convenient 3D drawing pen, characterized in that it is coupled by a cover hook (340). delete The method of claim 1,
A pair of the fixing hooks 420 are respectively disposed above and below the frame 410,
The separation button 146 is a convenient 3D drawing pen, characterized in that it is disposed on the bottom surface of the body portion (130). The method of claim 1,
A button arm 147 is integrally formed on the separation button 146 to further protrude,
3D drawing pen with convenient separation and coupling, characterized in that when the separation button (146) is pressed, the button arm (147) presses the fixing hook (420) to release the coupling. 3. The method of claim 2,
The pin holder 500 is 3D for convenient separation and coupling, characterized in that it further includes an inlet tube holder 510 into which the cover tube 330 is inserted at one end and the second inlet tube 570 is inserted at the other end. drawing pen. 7. The method of claim 6,
Separation coupling, characterized in that the inside of the inlet pipe holder (510) further protrudes a stopper (515) for determining the insertion position of the cover pipe (330) and the insertion position of the second inlet pipe (570). Convenient 3D drawing pen. 8. The method of claim 7,
A first tapered portion 517 for guiding the filament 10 in the central axis direction is further formed in the stopper 515,
A 3D drawing pen for convenient separation and coupling, characterized in that the cover tube (330) is further formed with a second tapered portion (335) for guiding the filament (10) in the central axis direction. The method of claim 1,
A 3D drawing pen for convenient separation and coupling, characterized in that a nozzle fixing part 115 is further press-fitted into the area where the nozzle 110 and the heater bobbin 200 are coupled. The method of claim 1,
a rear cover 160 coupled to the rear end of the body 130 and having a filament inlet 164 formed therein; and
A 3D drawing pen with convenient separation and coupling, characterized in that it further comprises; a first inlet pipe (550) assembled to the filament inlet (164). 11. The method of claim 10,
A second inlet pipe 570 inserted into the inlet pipe holder 510 of the pin holder 500; further comprising,
The second inlet pipe (570) is disposed on the same axis as the first inlet pipe (550) and is a 3D drawing pen for convenient separation and coupling, characterized in that they are spaced apart from each other. 12. The method of claim 11,
a transfer unit 182 positioned between the first inlet pipe 550 and the second inlet pipe 570 and transferring the filament 10; and
A 3D drawing pen for convenient separation and coupling, characterized in that it further comprises; a motor (180) for transmitting a rotational force to the transfer unit (182).

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