WO2020166760A1

WO2020166760A1 - Tattooing device needle unit

Info

Publication number: WO2020166760A1
Application number: PCT/KR2019/005163
Authority: WO
Inventors: 박용택; 황영진
Original assignee: 박용택
Priority date: 2019-02-14
Filing date: 2019-04-29
Publication date: 2020-08-20
Also published as: KR20200099349A; KR102231304B1

Abstract

A tattooing device needle unit of the present invention comprises: a cartridge body including a body part and a cartridge tip, and having an accommodation space; a cartridge cap which is coupled to the rear end portion of the cartridge body so as to seal the back of the accommodation space, and which has an insertion hole in the center thereof; a needle shaft including a shaft part and a needle, wherein a partial length of the shaft part is inserted into the insertion hole so as to be coupled with the cartridge cap and the needle is accommodated in the accommodation space so that an end portion thereof is positioned inside the cartridge tip; and a rubber member provided as a bellows type, wherein the front end portion thereof is coupled to the circumference of the length of the shaft part inserted into the accommodation space, and the rear end portion thereof is accommodated in the accommodation space so as to encompass the length of the shaft part coupled to the cartridge cap and inserted into the accommodation space.

Description

Tattoo device needle unit

The present invention relates to a needle unit of a tattoo device, and more particularly, to a needle unit of a tattoo device in which backflow of ink is prevented.

In general, tattoos are those in which the skin or subcutaneous tissue is wounded, and then letters and patterns are engraved with paints.

Tattoo devices used to perform such tattoos use small tools made of animal bones, but today, various tattoo devices have been proposed and used, such as making a wound on the skin by moving a needle straight and reciprocating through a motor drive. .

In other words, for the convenience of tattoo work, the tattoo needle automatically reciprocates back and forth, and while the tattoo needle reciprocates, the tattoo pigment descends through the tattoo needle, allowing the tattoo needle to pierce the human skin to a certain depth while moving. In this situation, devices designed to express a predetermined shape on a person's skin as intended by a person performing a tattoo are mainly used.

In general, such a tattoo device has a tattoo needle that is provided with a drive motor and a cam unit, and is installed to move forward and backward by linking a linear reciprocating motion.

That is, by converting the rotational force of the driving motor into a linear reciprocating motion through a cam and a link mechanism, the tattoo needle is continuously moved forward and backward, thereby simplifying the operation.

However, most tattoo devices in the related art have a problem in that ink flows back to the outside of the ink storage space in the process of moving the needle forward and backward.

Accordingly, a problem to be solved by the present invention is to provide a needle unit of a tattoo apparatus capable of stably performing tattoo work without concern for backflow of ink.

The needle unit of the tattoo device according to an embodiment of the present invention for solving the above-described problems includes a body portion including a liquid injection groove and a cartridge tip protruding from the front of the body portion, and the liquid A cartridge body having an accommodation space for receiving liquid ink injected through the injection groove; A cartridge cap coupled to the rear end of the cartridge body to seal the rear of the accommodation space and having an insertion hole in the center; A rod-shaped shaft portion and a needle coupled to the front end portion of the shaft portion, and the shaft portion is inserted into the insertion hole and coupled with the cartridge cap, and the needle is accommodated in the receiving space so that the end portion thereof is A needle shaft located inside the cartridge tip; And a bellows type, wherein a front end portion is coupled to a circumference of a length inserted into the receiving space of the shaft portion, and a rear end portion is coupled to the cartridge cap to be accommodated in the receiving space to surround the length of the shaft portion inserted into the receiving space. It characterized in that it comprises a rubber member.

In one embodiment, a first rubber member fitting groove is provided around one side of a portion of the shaft portion inserted into the receiving space, and a portion of the cartridge cap inserted into the receiving space has a diameter larger than the diameter of the insertion hole. A second rubber member fitting groove is provided, the front end of the rubber member is fastened to the first rubber member fitting groove and fixed to the shaft, and the rear end of the rubber member is fastened to the second rubber member fitting groove. It may be fixed to the cartridge cap.

In the needle unit of the tattoo device according to another embodiment of the present invention, the shaft portion is coupled to the cartridge cap so that a part of the length is inserted into the insertion hole and accommodated in the accommodation space, and a coupling hole having a predetermined depth is provided at the front end A shaft body portion; And a needle support member including a shaft coupling portion inserted into the coupling hole and a needle coupling portion provided in front of the shaft coupling portion, and a first rubber member fitting groove is provided around the shaft coupling portion, and the accommodation space A portion of the cartridge cap inserted into the cartridge is provided with a second rubber member fitting groove having a diameter larger than the diameter of the insertion hole, and the front end of the rubber member is fastened to the first rubber member fitting groove to be fixed to the shaft. And the rear end of the rubber member may be fastened to the second rubber member fitting groove and fixed to the cartridge cap.

The needle unit of the tattoo device according to another embodiment of the present invention further comprises an ink push member coupled to a front end of the shaft so as to be disposed in front of the rubber member in the receiving space, and the ink push member The part and the rear end are circular in shape, and the side is tapered in a form that increases in diameter as the side is further away from the rear end coupled to the shaft, so that the front end is provided to have a larger diameter than the rear end, and the side surface of the ink push member The ink passing slit may be provided with a plurality of ink passage slits extending in a predetermined length from the front end of the ink push member and arranged in a circumferential direction of the front end.

According to the needle unit of the tattoo apparatus according to the present invention, when the needle shaft to which the needle is coupled for tattooing moves forward and backward, the ink in the cartridge body is prevented from flowing backward in the direction of the driving unit driving the needle shaft in the opposite direction of the tattooing direction. As a result, there is an advantage in that it is possible to perform a tattoo work stably without fear of backflow of ink.

1 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to an embodiment of the present invention.

2 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention.

3 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention.

4 is a perspective view showing the state of the ink push member shown in FIG. 3.

5 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention.

Hereinafter, a needle unit of a tattoo apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the present invention, various modifications may be made and various forms may be applied, and specific embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention. In describing each drawing, similar reference numerals have been used for similar elements. In the accompanying drawings, the dimensions of the structures are shown to be enlarged compared to the actual size for clarity of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. These terms are used only for the purpose of distinguishing one component from another component. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

The terms used in the present application are used only to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance the possibility of being added.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

Referring to Figure 1, the needle unit of the tattoo device according to an embodiment of the present invention includes a cartridge body 110, a cartridge cap 120, a needle shaft 130, a rubber member 140.

The cartridge body 110 accommodates liquid ink and includes a body portion 111 and a cartridge tip 112.

The body part 111 is provided in the form of a tube with an open rear end, a liquid injection groove 111a is provided on one side of the tube, and a liquid ink injected through the liquid injection groove 111a inside the body 111 It is provided with a receiving space (111b) to accommodate. Although not shown, the liquid injection groove 111a is normally closed with a stopper.

The cartridge tip 112 protrudes from the front of the body part 111, is provided in a shape that decreases in diameter as it moves away from the body part 111, and at the end part, ink in which liquid ink is ejected from the receiving space 111b. The outlet 112a is formed.

For example, the cartridge tip 112 may be in a form in which one needle 132 may be coupled, or may be provided in a form in which a plurality of needles 132 may be coupled in close contact with each other. Although not shown, in the case where a plurality of needles 132 can be coupled, a plurality of needles 132 may be arranged in series, or a plurality of needles 132 arranged in series may be stacked in multiple stages, It may have the same radius around the center and arranged in a circular shape.

The cartridge cap 120 is coupled to the rear end of the cartridge body 110 to seal the rear of the receiving space 111b, and an insertion hole 123 is provided in the center. For example, the cartridge cap 120 is provided with a larger diameter than the insertion portion 121 and the insertion portion 121 inserted toward the receiving space 111b from the rear end of the body portion 111, the insertion portion 121 When inserted into the receiving space 111b, it may include a cover portion 122 covering the rear end of the body portion 111. The insertion hole 123 is formed to have a diameter smaller than the diameter of the insertion portion 121.

The needle shaft 130 includes a shaft portion 131 and a needle 132.

The shaft portion 131 is provided in a cylindrical rod shape, and a portion of the length is inserted into the insertion hole 123 of the cartridge cap 120 to be coupled with the cartridge cap 120. At this time, a portion of the shaft portion 131 inserted into the insertion hole 123 is accommodated in the receiving space 111b. The rear end of the shaft part 131, that is, the rear end exposed to the outside of the cartridge body 110, is connected to a driving part (not shown) having a driving means capable of moving the needle shaft 130 forward and backward, so that it can move forward and backward. have.

The needle 132 is provided to contact the skin to perform tattooing. The rear end of the needle 132 is coupled to the front end of the shaft part 131 and is located in the receiving space 111b, and the front end of the needle 132 is located inside the cartridge tip 112. The needle 132 may move forward and backward in and out of the cartridge tip 112 by the advancing and retreating movement of the shaft part 131. At this time, the ink discharged through the ink discharge port 112a of the cartridge tip 112 may be supplied to the outer peripheral surface of the needle 132.

The rubber member 140 is provided in a bellows type. The front end of the rubber member 140 is coupled around one side of the length inserted into the receiving space 111b of the shaft part 131, and the rear end is coupled to the cartridge cap 120 and inserted into the receiving space 111b ( It is accommodated in the accommodation space 111b to cover the length of 131.

For coupling of the rubber member 140, a first rubber member fitting groove 131a is provided around one side of a portion of the shaft portion 131 inserted into the receiving space 111b, and inserted into the receiving space 111b A second rubber member fitting groove 121a having a diameter greater than the diameter of the insertion hole 123 may be provided around a portion of the cartridge cap 120, that is, the insertion portion 121. Accordingly, the front end of the rubber member 140 is fastened to the first rubber member fitting groove 131a and fixed to the shaft portion 131, and the rear end of the rubber member 140 is in the second rubber member fitting groove 121a. It may be fastened and fixed to the cartridge cap 120.

Hereinafter, a process in which the needle unit of the tattoo apparatus according to an embodiment of the present invention operates during tattooing will be described.

First, by operating a driving unit connected to the needle shaft 130, the needle shaft 130 moves forward and backward.

When the needle shaft 130 moves forward and backward, the needle 132 coupled to the shaft portion 131 moves forward and backward to move reciprocally in and out of the cartridge tip 112. At this time, the needle shaft 130 pushes the ink in the receiving space 111b of the cartridge body 110 in the direction of the cartridge tip 112, and when the needle 132 is drawn out of the cartridge tip 112, the ink is As it is discharged through the ink discharge port 112a of the cartridge tip 112, it is supplied to the outer peripheral surface of the needle 132. In this process, the needle 132 is brought into contact with the skin and the ink penetrates the skin to perform tattoo work.

On the other hand, in the course of the needle shaft 130 advancing and retreating, the rubber member 140 is tensioned and restored. That is, when the needle shaft 130 moves forward, the rubber member 140 is tensioned, and when the needle shaft 130 moves backward, the rubber member 140 is restored. At this time, the rubber member 140 is a part of the shaft portion 131 of the needle shaft 130 inserted from the circumference of the insertion portion 121 of the cartridge cap 120 into the receiving space 111b of the cartridge body 110 Since it is enclosed, the ink stored in the receiving space 111b is prevented from leaking to the outside of the cartridge body 110 through the needle shaft 130. Accordingly, ink in the receiving space 111b of the cartridge body 110 is prevented from flowing backward in the direction of the driving unit outside the cartridge body 110.

When the needle unit of the tattoo device according to an embodiment of the present invention is used, the ink in the cartridge body 110 moves forward and backward when the needle shaft 130 to which the needle 132 is coupled for tattoo work In the reverse direction of, that is, the reverse flow in the direction of the driving unit driving the needle shaft 130 is blocked, there is an advantage that it is possible to perform a tattoo work stably without concern about the reverse flow of ink.

Hereinafter, a needle unit of a tattoo device according to another embodiment of the present invention will be described with reference to FIG. 2, focusing on differences from the needle unit of a tattoo device according to an embodiment of the present invention. 2 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention.

Referring to Figure 2, the needle unit of the tattoo device according to another embodiment of the present invention, the shaft portion 131, the cartridge so that a part of the length is inserted into the insertion hole 123 to be accommodated in the receiving space (111b). A shaft body portion 1311 coupled to the cap 120 and having a coupling hole 1311a having a predetermined depth at the front end portion; And a needle support member 1312 including a shaft coupling portion 1312a inserted into the coupling hole 1311a and a needle coupling portion 1312b provided in front of the shaft coupling portion 1312a, wherein the shaft A first rubber member fitting groove (131a) is provided around the coupling portion (1312a), and a portion of the cartridge cap (120) inserted into the receiving space (111b) has a diameter larger than the diameter of the insertion hole (123) A second rubber member fitting groove (121a) is provided, and the front end of the rubber member 140 is fastened to the first rubber member fitting groove (131a) and fixed to the shaft portion 131, and the rubber member ( 140) is the same as the configuration of the needle unit of the tattoo apparatus according to an embodiment of the present invention, except that the rear end portion is fastened to the second rubber member fitting groove 121a and fixed to the cartridge cap 120.

In the needle unit of the tattoo device according to another embodiment of the present invention, the needle 132 is coupled to the needle support member 1312, and the needle support member 1312 is detachably provided to the shaft body 1311, so that the needle There is an advantage that the replacement of (132) becomes easy.

Hereinafter, a needle unit of a tattoo device according to another embodiment of the present invention will be described with reference to FIGS. 3 and 4, focusing on differences from the needle unit of a tattoo device according to an embodiment of the present invention. 3 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention, and FIG. 4 is a perspective view showing the state of the ink push member shown in FIG. 3.

3 and 4, the needle unit of the tattoo device according to another embodiment of the present invention is a front end of the shaft portion 131 so as to be disposed in front of the rubber member 140 in the receiving space 111b. It is the same as the needle unit of the tattoo apparatus according to an embodiment of the present invention, except that it further includes the ink push member 150 coupled to the hereinafter will be described focusing on the ink push member 150.

The front end and the rear end of the ink push member 150 have a circular shape, and the side is formed to be tapered in a shape that increases in diameter as the side increases from the rear end coupled to the shaft part 131, so that the front end has a larger diameter than the rear end. It is provided to have.

Further, on the side of the ink push member 150, an ink passage slit 151 is provided that extends for a predetermined length from the front end of the ink push member 150 and is arranged in a plurality along the circumferential direction of the front end. The ink passage slit 151 is a slit through which a portion of the ink passes when the ink push member 150 moves forward and backward together with the needle shaft 130 in the accommodation space 111b of the cartridge body 110.

Hereinafter, when the needle unit of the tattoo apparatus of the present invention is used, the ink push member 150 moves forward and backward together with the needle shaft 130 that moves forward and backward when the tattoo work is performed, and the ink push member 150 When the front end of the ink push member 150 has a larger diameter than the rear end, the ink in the receiving space 111b can be easily pushed toward the cartridge tip 112, and the ink push member 150 moves backward. When doing so, since the side of the ink push member 150 is tapered in a shape that increases in diameter in the front end direction, some of the ink located at the rear of the ink push member 150 in the receiving space 111b is the ink push member ( Along the side of 150), it easily moves to the front side of the ink push member 150, and part of the ink moves to the front side of the ink push member 150 by the ink passage slit 151. The movement of (150) becomes free.

Therefore, the pumping process of pushing the ink toward the cartridge tip 112 by the ink push member 150 in the process of performing the tattoo work can be smoothly performed, so that ink supply to the outer circumferential surface of the needle 132 becomes easy, In addition, even when the amount of ink in the cartridge body 110 decreases, ink can be supplied smoothly by the ink push member 150, so that it is always smooth regardless of the amount of ink in the receiving space 111b of the cartridge body 110. There is an advantage that ink supply can be made.

Hereinafter, a needle unit of a tattoo device according to another embodiment of the present invention will be described with reference to FIG. 5, focusing on differences from the needle unit of a tattoo device according to an embodiment of the present invention. 5 is a cross-sectional view showing the configuration of a needle unit of a tattoo device according to another embodiment of the present invention.

5, in the needle unit of the tattoo device according to another embodiment of the present invention, the cartridge tip 112 of the cartridge body 110 includes a cylindrical extension part 1121, and the rubber member 140 is cylindrical It is the same as the needle unit of the tattoo apparatus according to an embodiment of the present invention, except that it is coupled to the extension portion 1121 and the shaft portion 131 of the needle shaft 130.

The cylindrical extension part 1121 extends from the inner surface of the surface corresponding to the front end of the body part 111 of the cartridge body 110 in the direction of the receiving space 111b, but extends by interviewing the inner surface of the body part 111 . Liquid inflow to the cylindrical extension part 1121 to introduce liquid ink injected into the liquid injection groove 111a corresponding to the liquid injection groove 111a formed in the body part 111 into the inside of the cylindrical extension part 1121 It includes a groove 1122.

The rubber member 140 has a front end portion coupled to the periphery of the end portion of the cylindrical extension portion 1121 and the rear end portion coupled to the outer surface of the shaft portion 131. For the coupling of the rubber member 140, a second rubber member fitting groove 1121a is provided around the end of the cylindrical extension portion 1121, and a first rubber member fitting groove 131a is provided around the shaft portion 131. Is equipped.

According to this structure, the inside of the rubber member 140 communicates with the inside of the cylindrical extension part 1121, whereby the liquid ink injected through the liquid injection groove 111a and the liquid inflow groove 1122 is a cylindrical extension part ( 1121 and the rubber member 140 is accommodated in the interior. That is, the ink is not accommodated in the receiving space 111b of the body portion 111 of the cartridge body 110, but is accommodated only in the inside of the cylindrical extension portion 1121 and the inside of the rubber member 140.

Ink accommodated in the inside of the cylindrical extension 1121 and the inside of the rubber member 140 is pumped toward the end of the cartridge tip 112 according to the advancing and retreating movement of the needle shaft 130, Is supplied.

In the needle unit of the tattoo device according to another embodiment of the present invention, since the liquid ink is accommodated only in the inside of the cylindrical extension part 1121 and the inside of the rubber member 140, the ink not only in the needle shaft 130 but also It is also possible to prevent reverse flow through the cartridge cap 120.

On the other hand, as the outer surface of the needle 132 of the needle unit of the tattoo device according to the embodiments of the present invention is coated with a perfume material having a sterilizing function, it has an effective function of sterilizing harmful bacteria attached to the skin and alleviating stress. do.

Meanwhile, a functional oil may be mixed with the perfume material, and the mixing ratio is 95 to 97% by weight of the perfume and 3 to 5% by weight of the functional oil are mixed, and the functional oil is 50% by weight of Cardamom oil, It consists of 50% by weight of marigold oil.

Here, the functional oil is preferably mixed in an amount of 3 to 5% by weight based on the fragrance. If the blending ratio of the functional oil is less than 3% by weight, the effect is insignificant, and if the blending ratio of the functional oil exceeds 3 to 5% by weight, the function is not greatly improved, while the manufacturing cost is greatly increased.

The main chemical components of cardamom oil are terpineol, cineol, etc., and have good effects on neuralgia, sterilization, antidepressant action, and stress relief.

Marigold oil is an oil extracted from marigold petals, and has excellent effects on treating skin diseases, sterilizing, relieving itchiness, clearing hair, and relieving tension.

As such functional oil is coated on the outer surface of the needle 132, it exhibits an excellent effect of sterilizing harmful bacteria of the skin and alleviating stress.

On the other hand, the rubber member 140 of the needle unit of the tattoo device according to the embodiments of the present invention is made of a rubber material, the raw material content ratio is rubber 60% by weight, carbon black 33 ~ 36% by weight, antioxidant 2 ~ 5% by weight and 1 to 3% by weight of sulfur as an accelerator are mixed.

Carbon black is to increase abrasion resistance, so it is added, but if the content is less than 33% by weight, elasticity and abrasion resistance decrease, and if it exceeds 36% by weight, the content of rubber, which is the main component, is relatively small, so the elasticity may decrease. , 33 to 36% by weight are mixed.

Antioxidant is 3C (N-PHENYL-N'-ISOPROPYL- P-PHENYLENEDIAMINE) or RD (POLYMERIZED 2,2,4-TRIMETHYL-1,2-DIHYDROQUINOLINE) to add 2 to 5% by weight, 2 If it is less than% by weight, the product is liable to be oxidized, and if too much is added and exceeds 5% by weight, the content of rubber, which is the main component, is relatively small, and the elasticity may be lowered. ~5% by weight is appropriate.

Sulfur, which is an accelerator, is mixed with 1 to 3% by weight. If less than 1% by weight, the vulcanization effect in the heating process during molding is insignificant, so 1% by weight or more is added. If it exceeds 3% by weight, since the content of the rubber as the main component is relatively small, the elasticity may be lowered, so 1 to 3% by weight is appropriate.

Accordingly, since the present invention is reinforced with synthetic rubber having elasticity in various directions, the elasticity, toughness, and stiffness of the rubber member 140 are increased, thereby improving durability, thereby increasing the life of the rubber member 140.

In addition, the needle 132 may be made of a metal material, and a corrosion protection coating layer may be applied to the needle to prevent corrosion. Corrosion-resistant coating layer is guanadino benzoimidazole 20% by weight, oxycarboxylic acid leaves 15% by weight, imidazoline thione 10% by weight, hafnium 15% by weight, molybdenum emulsified (MoS2) 10% by weight, aluminum oxide 25% by weight, It consists of 5% by weight of diglycidyl aniline, and the coating thickness can be formed to 7㎛.

Guanadino benzoimidazole, oxycarboxylic acid leaves, imidazoline thione and diglycidyl aniline play a role in preventing corrosion and discoloration.

Hafnium is a transition metal element with corrosion resistance and plays a role in having excellent waterproof and corrosion resistance.

Molybdenum emulsified plays a role of imparting wetness and lubricity to the surface of the coating film.

Aluminum oxide is added for the purpose of fire resistance and chemical stability.

The reason why the ratio of the constituent components and the coating thickness were numerically limited as described above was analyzed by the present inventors through the test results several times, and as a result, the optimum corrosion prevention effect was exhibited at the ratio.

The description of the presented embodiments is provided to enable any person skilled in the art to use or implement the present invention. Various modifications to these embodiments will be apparent to those of ordinary skill in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of the present invention. Thus, the present invention is not to be limited to the embodiments presented herein but is to be interpreted in the widest scope consistent with the principles and novel features presented herein.

Claims

It includes a body portion 111 including a liquid injection groove 111a and a cartridge tip 112 protruding from the front of the body portion 111, and the liquid injection groove 111a inside the body portion 111 ) A cartridge body 110 provided with a receiving space 111b for receiving liquid ink injected through;

A cartridge cap 120 coupled to the rear end of the cartridge body 110 to seal the rear of the receiving space 111b and having an insertion hole 123 in the center;

It includes a rod-shaped shaft portion 131 and a needle 132 coupled to the front end of the shaft portion 131, and the shaft portion 131 has a partial length inserted into the insertion hole 123 to allow the cartridge A needle shaft 130 coupled to the cap 120, wherein the needle 132 is accommodated in the receiving space 111b so that the distal end thereof is located inside the cartridge tip 112; And

It is provided in a bellows type, the front end is coupled to the circumference of the length inserted into the receiving space 111b of the shaft part 131, and the rear end is coupled to the cartridge cap 120 and inserted into the receiving space 111b. It characterized in that it comprises a rubber member 140 accommodated in the receiving space (111b) so as to surround the length of the shaft portion 131,

The needle unit of the tattoo device.
The method of claim 1,

A first rubber member fitting groove (131a) is provided around one side of a portion of the shaft portion (131) inserted into the receiving space (111b),

A portion of the cartridge cap 120 inserted into the receiving space 111b is provided with a second rubber member fitting groove 121a having a diameter greater than the diameter of the insertion hole 123,

The front end of the rubber member 140 is fastened to the first rubber member fitting groove 131a and fixed to the shaft part 131, and the rear end of the rubber member 140 is the second rubber member fitting groove 121a It is fastened to, characterized in that fixed to the cartridge cap 120,

The needle unit of the tattoo device.
The method of claim 1,

The shaft part 131,

A shaft body portion 1311 having a partial length inserted into the insertion hole 123 and coupled to the cartridge cap 120 so as to be accommodated in the receiving space 111b, and having a coupling hole 1311a having a predetermined depth at the front end. ); And

And a needle support member 1312 including a shaft coupling portion 1312a inserted into the coupling hole 1311a and a needle coupling portion 1312b provided in front of the shaft coupling portion 1312a,

A first rubber member fitting groove (131a) is provided around the shaft coupling portion (1312a),

A portion of the cartridge cap 120 inserted into the receiving space 111b is provided with a second rubber member fitting groove 121a having a diameter greater than the diameter of the insertion hole 123,

The front end of the rubber member 140 is fastened to the first rubber member fitting groove 131a and fixed to the shaft part 131, and the rear end of the rubber member 140 is the second rubber member fitting groove 121a It is fastened to, characterized in that fixed to the cartridge cap 120,

The needle unit of the tattoo device.
The method of claim 1,

Further comprising an ink push member 150 coupled to the front end of the shaft portion 131 so as to be disposed in front of the rubber member 140 in the receiving space 111b,

The ink push member 150 has a front end portion and a rear end portion having a circular shape, and the front end portion is formed to be tapered in a shape that increases in diameter as the side faces away from the rear end portion coupled to the shaft portion 131. It is provided to have a diameter,

An ink passage slit 151 extending a predetermined length from the front end of the ink push member 150 and arranged in a plurality along the circumferential direction of the front end of the ink push member 150 is provided on the side of the ink push member 150,

The needle unit of the tattoo device.