KR101122526B1 - Skin care and cure device comprising easily changeable needle assembly - Google Patents

Abstract

PURPOSE: A skin care therapeutic machine is provided to enable a user to conveniently assemble a needle assembly. CONSTITUTION: A skin care therapeutic machine comprises a shaft(140), a driving unit case, a body cap(130), a needle cap(110), and a cover. The driving unit case performs the role of a handle and is connected to the rear end of the body case in which a shaft is installed. The body cap is installed to the front end of the body case. The needle cap is combined with the front end of the body cap and receives a needle assembly.

Description

Skin care and cure device comprising easily changeable needle assembly

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a skin care treatment device, and more particularly, to a skin care treatment device that can easily exchange needle assemblies and precisely control the penetration depth and penetration speed of a needle.

Skin care is aimed at preventing and treating phenomena such as wrinkles, pigmentation, pigmentation, drying, and loss of elasticity caused by skin diseases and aging, and can be divided into surgical and non-surgical methods.

The skin is divided into the epidermal layer and the dermal layer composed of collagen. Most non-surgical methods increase the elasticity of the skin by inducing regeneration of collagen by applying thermal energy or electromagnetic energy to the skin.

Conventionally, a method of radiating infrared rays or radio waves from the outside of the skin is mainly used, but according to this method, it is difficult to control the range or depth of energy supply, which may cause burns of the epidermal layer and damage to other tissues.

Accordingly, recently, a method of inducing collagen regeneration by using a high frequency applied to the needle by penetrating the fine needle (needle) into the skin has been attracting attention.

By the way, the conventional skin care device using the needle is difficult to control the penetration depth or penetration rate of the needle and there is a problem that it is inconvenient to replace the used needle.

For example, the skin care device disclosed in Korean Patent No. 943089 should be equipped with an adjustment member for operating the needle assembly and adjusting the penetration depth of the needle using a pneumatic cylinder in the lower portion of the drive unit. By the way, it is impossible to precisely control the penetration depth with the pneumatic cylinder and the adjustment member, there is a inconvenience that the operator must replace the appropriate adjustment member to adjust the penetration depth.

In addition, the skin care device disclosed in the Republic of Korea Patent No. 1017795 is equipped with a needle assembly to the drive plate using a fixing member, in order to separate the needle assembly to remove the fixing member by using a tool is a very cumbersome replacement work have.

The present invention is to solve such a problem, the object of the present invention is to provide a skin care treatment device that can precisely control the penetration depth or penetration rate of the needle.

In addition, the purpose of the present invention is to provide a skin care treatment device that can easily replace the used needle assembly.

The present invention to achieve the above object, the front end is located on the outside of the case and the rear end is located inside the case; A body cap coupled to the front end of the case and passing through the shaft; A needle fixing block having a plurality of needles mounted at the front end and having a shaft coupling means for engaging the shaft at the rear end thereof, and a plurality of power connecting rods protruding to the rear end of the needle fixing block as being electrically connected to the plurality of needles. Needle assembly provided; A needle cap accommodating the needle assembly therein, a front end surface having a plurality of holes through which the plurality of needles pass, respectively, having a rear end coupled to the body cap; A plurality of power terminals formed on a front end surface of the body cap and contacting the plurality of power connection rods when the needle assembly is coupled to the shaft, the plurality of power terminals electrically connected to a power supply unit; It is provided inside the case provides a skin care treatment device including a drive means for reciprocating linear movement of the shaft.

In the skin care treatment device according to the present invention, the shaft coupling means, the connecting portion protruding to the rear end of the needle fixing block and formed in the rear end of the connecting portion includes a shaft coupling block whose maximum diameter is larger than the maximum diameter of the connecting portion; The shaft is formed in the longitudinal direction from the front end to the rear end and the guide groove having a width that can enter the shaft coupling block and the first coupling groove formed in the direction of rotation about the central axis at the rear end of the guide groove; And a second coupling groove formed to be symmetrical with the first coupling groove about the central axis.

In addition, the body cap has a plurality of first cap coupling grooves formed from the front end to the rear end, and a plurality of second caps formed in the direction of rotation about the central axis of the body cap at each rear end of the plurality of first cap coupling grooves. A coupling groove is formed, and the needle cap may be characterized in that a plurality of coupling protrusions which can be inserted into the plurality of first cap coupling grooves and the second cap coupling groove.

In addition, the inner circumferential surface of the needle cap may be characterized in that the locking projection is formed so as not to fall out by itself after the needle fixing block is inserted.

In addition, the plurality of power connecting rods may have elasticity that can be stretched or bent, and the plurality of power terminals may be formed by being indented into the concave grooves formed in the front end surface of the body cap.

According to the present invention, since the needle assembly is operated by using a servo motor and a ball screw, the penetration depth or penetration speed of the needle can be precisely controlled. In addition, since the needle assembly can be easily replaced and combined, the ease of use of the operator can be greatly improved.

1 is a perspective view of a skin care treatment device according to an embodiment of the present invention
2 is a cross-sectional view showing a state in which the needle assembly is advanced;
3 is a cross-sectional view showing a state in which the needle assembly is retracted.
Figure 4 is a cross-sectional view showing a state in which the needle assembly is separated from the shaft
5 is a cross-sectional view showing a state in which the needle assembly is separated from the needle cap
6 illustrates a needle assembly.
7 shows the distal end of the shaft;
8 is a view showing the needle assembly coupled to the shaft
9 is a perspective view of a needle cap
10 is a view showing a needle cap and a body cap
11 is a view showing a needle cap coupled to the body cap
12 is a view showing a needle assembly coupled to a shaft
13 is a view showing another coupling structure of the needle assembly and the shaft

Hereinafter, with reference to the drawings will be described a preferred embodiment of the present invention.

1 is a perspective view of a skin care device 100 according to an embodiment of the present invention, Figures 2 and 3 are cross-sectional views showing when the needle 121 is advanced and retracted, respectively. Hereinafter, for convenience of description, the side where the needle 121 is positioned in each component will be referred to as a 'tip', and the opposite side will be defined as a 'back'.

Looking at the appearance of the skin care device 100 according to an embodiment of the present invention, the body case 102, which serves as a handle and the shaft 140 is installed therein, the driving unit case 104 connected to the rear end of the body case 102 The body cap 130 is attached to the front end of the body case 102, the needle cap 110 is coupled to the front end of the body cap 130, the needle assembly 120 is accommodated therein, the needle cap when not in use The cover 180 is coupled to the tip of the 110.

For convenience of processing and assembly, it is preferable to separately manufacture and assemble the body case 102 and the driving unit case 104, but if necessary, the whole case may be integrally manufactured, and the specific shape may be different from that shown. Of course. Body case 102 may also be manufactured by assembling two or more parts.

Although not shown in the body case 102 or the driving unit case 104, operation buttons for the operator's operation and convenience, input means (eg, keypad, touch screen), display means (eg, liquid crystal panel, touch screen, LED), etc. Can be mounted. However, if the operator manipulates the operation button during the procedure, the operation may be performed incorrectly due to hand shaking. Therefore, it may be desirable to use a foot switch connected to the skin care device 100 through the cable as the operation button. In addition, the input means such as a touch screen may be installed in a control computer (not shown) connected to the skin beauty treatment apparatus 100 without installing the input means in the skin beauty treatment apparatus 100.

The needle cap 110 has a cap shape in which a tip is blocked and a rear end is opened, and the tip cap includes a plurality of holes (see 114 in FIG. 5) through which each needle 121 passes. A coupling protrusion 112 for coupling to the body cap 130 is formed on the inner circumferential surface of the rear end opening of the needle cap 110. If the rear end of the needle cap 110 is inserted into the body cap 130, the coupling protrusion may be formed on the outer circumferential surface of the needle cap 110, of course.

The needle cap 110 prevents the needle assembly 120 from directly hitting the subject's skin when the needle assembly 120 located inside moves toward the tip, and guides the reciprocating linear motion of the needle assembly 120. do.

Meanwhile, after the procedure is completed, the needle cap 110 and the needle cap 110 needing to be replaced by the operator's blood as well as the needle assembly 120, the needle cap 110 and the needle assembly 120 are provided to the operator as a set. It is preferable. That is, as shown in Figure 4, the needle cap 110 and the needle assembly 120 is preferably coupled to or separated from the body cap 130 and the shaft 140, respectively.

To this end, as shown in the exploded cross-sectional view of Figure 5, it is preferable that the engaging projection 116 is formed on the inner peripheral surface of the needle cap (110). The locking protrusion 116 may be formed along the entire inner circumferential surface, or two or more locking protrusions 116 may be formed at positions symmetrical with each other.

Therefore, when the needle assembly 120 is inserted through the rear end opening of the needle cap 110, the needle fixing block 122 of the needle assembly 120 is pulled out by the locking protrusion 116 after passing through the locking protrusion 116. Since the needle assembly 120 and the needle cap 110 can be maintained in a coupled state. In addition, as shown in FIG. 4, when the needle cap 110 is separated from the body cap 130, the needle assembly 120 is also separated, thereby making it easy to replace the needle. In order for the needle assembly 120 to be inserted smoothly, the locking protrusion 116 preferably has a shape in which the height increases from the rear end to the front end, but is not necessarily limited thereto. In addition, of course, the locking protrusion 116 may be omitted as necessary.

The distance from the inner end wall of the needle cap 110 to the locking protrusion 116 should be greater than the length from the tip of the needle 121 to the rear end of the needle fixing block 122. This is because the needle 121 can fully enter the inside of the needle cap 110 when the needle assembly 120 is retracted.

Meanwhile, the needle cap 110 may be fastened or separated together with the needle assembly 120 located therein. That is, when the needle cap 110 is rotated to couple or separate the needle cap 110 to the body cap 130, the needle assembly 120 located therein is also coupled or separated to the shaft 140 while rotating together. It is preferable.

To this end, it is preferable that the shape of the needle fixing block 122 and the shape of the internal space of the needle cap 110 is the same. Referring to the cross-sectional shape perpendicular to the longitudinal direction, if the needle fixing block 122 is a quadrangle, it is preferable that the inner circumferential surface of the needle cap 110 into which the needle fixing block 122 is inserted is also a quadrangle. This is because the needle fixing block 122 may rotate together when the needle cap 110 is rotated. Of course, the cross-sectional shape of the needle fixing block 112 and the needle cap 110 is not limited to the rectangle.

As another method, a guide groove (not shown in the drawing) in the longitudinal direction is formed on the side of the needle fixing block 122, and a guide groove (not shown in the drawing) into which the guide protrusion is inserted into the inner surface of the needle cap 110. ) May be formed. In this case, even when the needle fixing block 122 and the needle cap 110 have different cross-sectional shapes, the needle fixing block 122 may rotate together when the needle cap 110 is rotated. The guide protrusion and the guide groove may also serve to guide the stable reciprocation of the needle assembly 120 in the needle cap 110. In a similar manner, the needle fixing block 122 is formed with a longitudinal guide hole (not shown) and a longitudinal guide rod (not shown) is formed inside the needle cap 110. When the needle fixing block 122 is inserted into the needle cap 110, a guide rod may be inserted into the guide hole.

5 and 6, the needle assembly 120 is a needle coupling block 122 having a needle 121 fixed to a front end surface thereof, and a portion of the needle fixing block 122 that is coupled to the shaft 140. It includes a shaft coupling block 124 formed at the rear end, a connecting portion 126 for connecting the needle fixing block 122 and the shaft coupling block 124, a protrusion 126 formed at the rear end of the shaft coupling block 124. The shaft coupling block 124 has a substantially rectangular parallelepiped shape, and the length of at least one side should be larger than the maximum diameter of the connecting portion 126. This is because both ends of the shaft coupling block 124 can be inserted into the first and second coupling grooves 141a and 141b of the shaft 140 by rotating the needle assembly 120 as described below.

Although not shown in detail, the needle fixing block 122 is coupled to a printed circuit board for supplying power to the needle 121, and a plurality of terminals electrically connected to each needle 121 are formed on the printed circuit board. . In addition, the needle fixing block 122 is coupled to the first and second power connecting rods (128a, 128b) electrically connected to the needle (121).

For example, one half of the plurality of terminals may be connected to the first power connecting rod 128a to which the power of the first polarity is supplied, and the other half may be connected to the second power connecting rod 128b to the power of the second polarity. have.

The number of power connection rods is not limited to two, and in the case of supplying three-phase power, one-third of the plurality of terminals are connected to the first power connection rod 128a to which the power of the first phase is supplied. The third third terminal is connected to the second power connecting rod 128b to which the second phase power is supplied, and the third third terminal is connected to the third power connecting rod to which the third phase power is supplied (not shown in the drawing). You can also connect to

The first and second power connecting rods 128a and 128b are installed to prevent the operator from connecting or disconnecting the power line one by one during the replacement process. Each of the power connecting rods 128a and 128b preferably has a certain level of elasticity so as to be stretched or bent in the longitudinal direction, and a contact terminal 129 having a relatively large cross-sectional area is preferably formed at an end thereof. The contact terminal 129 is in contact with the power supply terminal 138 formed on the front end surface of the body cap 130 when coupling the needle cap 110 to the body cap 130 as described below.

Hereinafter, the coupling structure of the needle assembly 120 and the shaft 140 will be described.

As shown in FIG. 7, the guide groove 142 is formed in the shaft 140 from the center of the front end surface to the rear end thereof, and the guide groove 142 is a portion into which the shaft coupling block 124 of the needle assembly 120 is inserted. Have a corresponding width and length.

In addition, the rear end of the guide groove 142 is formed with a coupling groove 141 in communication with the guide groove 142. The coupling groove 141 is symmetrically with the first coupling groove 141a with respect to the central axis of the shaft 140 and the first coupling groove 141a formed in an arc shape at a predetermined angle with respect to the central axis of the shaft 140. It includes a second coupling groove (141b) formed. Both ends of the shaft coupling block 124 of the needle assembly 120 are inserted into the first and second coupling grooves 141a and 141b, respectively.

Therefore, as shown in FIG. 8, when the shaft coupling block 124 of the needle assembly 120 is rotated after entering through the guide groove 142 of the shaft 140, one end of the shaft coupling block 124 is removed. It is inserted into the first coupling groove 141a and the other end is inserted into the second coupling groove 141b so that it does not move in the front-rear direction. When removing, the needle assembly 120 is rotated in a direction opposite to that of the coupling, and the shaft coupling block 124 is removed along the guide groove 142.

In addition, an insertion groove (143 of FIG. 4) may be formed between the first coupling groove 141a and the second coupling groove 141b at a rear end along the central axis of the shaft 140. When the protrusion 127 formed at the rear end of the shaft coupling block 124 is inserted into the insertion groove 143, the needle assembly (3) is inserted when the shaft coupling block 124 is inserted into the first and second coupling grooves 141a and 141b. There is an advantage that can be rotated 120) stably.

Next, the coupling structure of the needle cap 110 and the body cap 130 will be described.

9 shows the needle cap 110, two coupling protrusions 112 are formed at positions facing each other on the inner circumferential surface of the rear end opening. Coupling protrusion 112 is a portion that is coupled to the body cap 130.

On the outer circumferential surface of the body cap 130, that is, as shown in FIG. 10, a cap coupling groove 132 into which the coupling protrusion 112 of the needle cap 110 is inserted is formed.

The cap coupling groove 132 is formed in the circumferential direction with respect to the central axis of the body cap 130 at the rear end of the first cap coupling groove 132a and the first cap coupling groove 132a formed longitudinally from the front end to the rear end thereof. It includes a two cap coupling groove (132b).

Therefore, after the needle cap 110 is moved to the rear end and the coupling protrusion 112 is inserted into the first cap coupling groove 132a and rotated clockwise in the drawing, the coupling protrusion 112 is the second cap coupling groove 132b. Since it is inserted into the needle cap 110 is fixed so as not to move in the longitudinal direction. 11 shows a state in which the needle cap 110 is coupled to the body cap 130 in the same manner.

Meanwhile, when the locking protrusion 133 is formed on the bottom of the second cap coupling groove 132b, and the locking groove 113 is formed on the upper end of the coupling protrusion 112, the needle cap 110 rotates. This prevents the operator from being able to use it stably. However, the needle cap 110 is a part that needs to be replaced after use so that the user can rotate the needle cap 110 when a little force is applied. Therefore, in view of this point, the height or elasticity of the locking groove 113 and the locking projection 133 should be appropriately designed.

The needle cap 110 may be rotated such that the coupling protrusion 112 passes through the locking protrusion 133 of the body cap 130 without forming a locking groove at the upper end of the coupling protrusion 112.

A bolt hole 134 is formed on the outer circumferential surface of the body cap 130, and the body cap 130 is body by tightening the bolt in a state where the rear end of the body cap 130 is inserted into the front end opening of the body case 102. It can be fixed to the case 102.

A shaft hole 136 into which the shaft 140 is inserted is formed at the center of the body cap 130. In addition, the body cap 130 is an insulating material, and two power terminals 138 are formed around the shaft hole 136. The power supply terminal 138 is electrically connected to a power cable (not shown) installed inside the body case 104.

The power supply terminal 138 is preferably installed in the concave groove formed in the front end surface of the body cap 130. This is to allow the contact terminal 129 of the power connecting rods 128a and 128b to smoothly contact the power supply terminal 138 at the time of coupling.

That is, when the needle cap 110 is moved toward the body cap 130 to couple to the body cap 130, the power connecting rods 128a and 128b of the needle assembly 120 also move in the same direction, but the contact terminal 129 is moved. The body cap 130 is in contact with the front end surface is slightly compressed or bent. In this state, when the needle cap 110 is rotated, the power connecting rods 128a and 128b are also rotated in the same direction. When the contact terminal 129 is inserted into the concave groove, the power connecting rods 128a and 128b are in contact with each other. The terminal 129 and the power supply terminal 138 are electrically connected to each other. 12 shows a state in which the needle assembly 120 is coupled to the shaft 140, and it can be seen that the end of the first power connecting rod 128a is inserted into the concave groove.

Meanwhile, the needle assembly 120 is coupled to the front end of the shaft 140 to reciprocate linearly in the needle cap 110. The shaft 140 is installed in the longitudinal direction inside the body case 102. The shaft 140 is connected to the ball screw 150 to perform a reciprocating linear motion, and the ball screw 150 is connected to the servo motor 160 installed inside the driving unit case 104 through the coupling 162.

The servo motor 160 can precisely control the rotation speed, rotation angle, and rotation speed by using an encoder mounted therein. Therefore, by using the servo motor 160, it is possible to precisely adjust the skin penetration depth or penetration speed of the needle 121.

Furthermore, using the servo motor 160, it is also possible to adjust the penetration speed of the needle 121 differently depending on the depth. For example, when passing through the epidermal layer, the penetration speed may be increased as fast as possible and the penetration speed may be slowed in the dermal layer. When penetrating the needle 121, the speed may be increased and the speed may be slowed when the needle 121 is removed.

The ball screw 150 includes a screw shaft 151 having a rear end connected to the coupling 162 and extending toward the front end of the body case 102, and a nut 152 through which the screw shaft 151 penetrates. The nut 152 is installed so as not to rotate inside the body case 102 to reciprocate linearly according to the rotational direction of the screw shaft 151.

In order to prevent the rotation of the nut 152, the guide protrusion and the guide groove which mesh with each other on the inner circumferential surface of the body case 102 and the outer circumferential surface of the nut 152 may be formed in the longitudinal direction, respectively. Known linear guides may be used. Alternatively, all or part of the inner circumferential surface of the body case 102 and the outer circumferential surface of the nut 152 may be formed in a plane rather than a curved surface.

As shown in FIGS. 2 and 3, the rear end of the shaft 140 is coupled to the nut 152 of the ball screw 150. To this end, the nut coupling portion 145 is coupled to the nut 152 at the rear end of the shaft 140.

The nut coupling portion 145 includes a nut coupling groove 146 opened to the rear end and a coupling protrusion 147 formed in the nut coupling groove 146. The tip of the nut 152 is inserted into the nut coupling groove 146. A screw shaft insertion groove 148 into which the end of the screw shaft 151 is inserted may be further formed on the inner side wall of the nut coupling groove 146. Although the drawing shows that the diameter of the screw shaft insertion groove 148 is smaller than the nut coupling groove 146, the diameter of the screw shaft insertion groove 148 is not limited thereto.

A guide groove 149 may be formed on the outer circumferential surface of the nut coupling portion 145, and guide protrusions formed in the longitudinal direction on the inner circumferential surface of the body case 102 may be formed in the guide groove 149. Once inserted, the linear movement of the shaft 140 can be stably guided.

A coupling groove corresponding to the coupling protrusion 147 is formed on the outer circumferential surface of the nut 152. Therefore, when the shaft 140 is made of an elastic material such as plastic, the nut 152 can be inserted into the nut coupling groove 146 by force fitting. Alternatively, the nut 152 and the shaft 140 may be coupled using a bolt.

On the other hand, although not shown in the drawings, the body case 102 or the driving unit case 104 may be a PCB mounted with a control microcomputer, a servo motor controller, and the like. In addition, a power supply means for supplying a servo motor driving power and a control power may be installed. Meanwhile, the operation of the skin care treatment apparatus 100 may be controlled by using a separate control computer (not shown) without installing the control microcomputer or the like inside the skin care treatment apparatus 100.

The control microcomputer or control computer stores a control program for generating a control signal for controlling the rotation angle, the rotation speed, the rotation direction, the rotation speed, and the like of the servo motor 160 according to the input command and transmitting the control signal to the servo motor controller. In addition, the servomotor controller feeds back the signal of the encoder mounted in the servomotor 160 to control the operation of the servomotor.

The power supply means may include a transformer, a constant voltage circuit, a constant current circuit, an A / D converter, an external power supply connector, and the like.

In addition, energy generating means for applying energy to the plurality of needles 121 may be installed inside or outside the skin care treatment apparatus 100 of the present invention. The energy applied to the plurality of needles 121 may be high frequency energy, RF energy, current pulse, or the like, but is not limited thereto.

In addition, the method of supplying energy to the plurality of terminals is not particularly limited. For example, the plurality of needles 121 may be divided into two or more needle groups each including at least one needle to supply energy by changing a potential difference or a phase difference for each group. In addition, instead of supplying energy to the entire needle 121 at the same time, a plurality of terminals are divided into three or more groups. The power may be alternately supplied, such as supplying power only to the terminals of the third group.

Hereinafter, the operation of the skin care device 100 according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

First, before using the skin care treatment device 100, the operator must input information such as the desired skin penetration depth and penetration rate through the input means. The control microcomputer (or control computer) calculates the rotation speed, rotation angle, rotation speed, etc. of the servomotor 160 based on the input information, and transmits and stores the control signal to the servomotor controller.

And before the procedure, as shown in Figure 3, the needle assembly 120 is moved to the rear end so that the needle 121 does not protrude to the outside of the needle cap (110).

In this state, the operator closely attaches the needle cap 110 to the skin of the subject and presses an operation button or presses a footswitch to operate the servo motor 160 as set to rotate the rotating shaft.

When the servo motor 160 operates, the screw shaft 151 of the ball screw 150 connected to the coupling 160 rotates, and the nut 152 coupled to the screw shaft 151 linearly moves toward the tip end. . Therefore, the shaft 140 coupled to the nut 152 simultaneously moves toward the tip side, and the needle assembly 120 coupled to the tip of the shaft 140 also moves toward the tip side.

Thus, a plurality of needles 121 mounted on the needle assembly 120 passes through the hole 114 of the needle cap 110 to penetrate into the skin of the subject.

After the needle 121 moves the set distance, the servo motor 160 rotates reversely automatically or according to the operator's operation, so that the shaft 140 reverses and the needle 121 is pulled out of the skin.

On the other hand, after the needle 121 penetrates the skin, RF energy or the like may be applied to the needle 121 automatically or by an operator.

By repeating this operation on the operator's skin, artificial wounds on the dermal layer will increase the elasticity of the skin and improve wrinkles during collagen regeneration.

Meanwhile, the needle 121 and the needle cap 110 penetrated into the skin of the subject are buried by the subject's blood, and thus must be replaced with new ones after use.

To this end, by rotating the needle cap 120 coupled to the body cap 130 in the opposite direction, the coupling protrusion 112 of the needle cap 110, the first cap coupling groove of the body cap 130 ( Through 132a).

In this process, both ends are separated from the coupling groove 141 while the shaft coupling block 124 of the needle assembly 120 inserted into the coupling groove 141 of the shaft 140 is pulled out through the guide groove 142. Come out. Figure 4 shows the needle cap 110 and the needle assembly 120 is separated in this way.

On the other hand, while the preferred embodiment of the present invention has been described, the present invention is not limited to the above-described embodiment may be modified or modified in various forms.

For example, in the exemplary embodiment of the present invention, the servomotor 160 is used to precisely control the needle 121, but when the required precision is low, the shaft 140 may be formed using another type of motor or a pneumatic cylinder. It will also be possible to move it.

In addition, the position of the fastening means of the needle assembly 120 and the shaft 140 may be reversed. For example, as shown in FIG. 13, the coupling block 144 is formed at the tip of the shaft 140, and the guide groove into which the coupling block 144 of the shaft 140 is inserted into the rear end of the needle fixing block 122 ( It is also possible to form a shaft fastening protrusion having a 125 and two coupling grooves (123). In this case, the guide groove 125 and the two coupling grooves 123 formed at the rear end of the needle fixing block 122 are guide grooves 142 and first and second, which are formed at the front end of the shaft 140 in FIG. What is necessary is just to manufacture in the same shape as the engaging grooves 141a and 141b.

In the same manner as in FIG. 10, a plurality of coupling protrusions are formed on the outer circumferential surface of the body cap 130, and a plurality of coupling protrusions of the body cap 130 are inserted in the inner circumferential surface of the needle cap 110, respectively. A circumferential engagement groove may be formed. In addition, the coupling protrusion or the coupling groove is formed on the outer circumferential surface of the needle cap 110, the body cap 130 forms an insertion groove into which the rear end of the needle cap 110 can be inserted, and the needle cap 110 inside the insertion groove. A coupling groove (or coupling protrusion) may be formed corresponding to the coupling protrusion (or coupling groove).

As a result, the present invention is not limited to the above-described embodiments, but may be modified or modified in various forms, and if the modified or modified embodiments include the technical idea of the present invention included in the claims to be described below, the present invention. It belongs to the scope of rights.

100: skin beauty treatment device 102: body case
104: driving unit case 110: needle cap
112: engaging protrusion 113: locking groove
114: hole 116: jamming
120: needle assembly 121: needle
122: needle fixing block 124: shaft coupling block
126: connection 127: projection
128a, 128b: Power supply rod 129: Contact terminal
130: body caps 132a, 132b: first and second cap coupling groove
133: locking projection 134: bolt fastening hole
136: shaft insertion hole 138: power terminal
140: shaft 141a, 141b: first and second coupling groove
142: guide groove 143: insertion groove
145: nut coupling portion 146: nut insertion groove
147: engaging projection 148: screw shaft insertion groove
149: guide groove 150: ball screw
160: servomotor 162: coupling
180: cover

Claims (10)

A front end is located outside the case and a rear end is located inside the case;
A body cap coupled to the front end of the case and passing through the shaft;
A needle fixing block having a plurality of needles mounted at the front end and having a shaft coupling means for engaging the shaft at the rear end thereof, and a plurality of power connecting rods protruding to the rear end of the needle fixing block as being electrically connected to the plurality of needles. Needle assembly provided;
A needle cap accommodating the needle assembly therein, a front end surface having a plurality of holes through which the plurality of needles pass, respectively, having a rear end coupled to the body cap;
A plurality of power terminals formed on a front end surface of the body cap and contacting the plurality of power connection rods when the needle assembly is coupled to the shaft, the plurality of power terminals electrically connected to a power supply unit;
Drive means installed in the case to reciprocally linearly move the shaft;
Skin care treatment device comprising The method of claim 1,
The shaft coupling means includes a connecting portion protruding to the rear end of the needle fixing block and a shaft coupling block having a maximum diameter greater than the maximum diameter of the connecting portion, formed at the rear end of the connecting portion,
The shaft is formed in the longitudinal direction from the front end to the rear end and the guide groove having a width that the shaft coupling block can enter and the first coupling groove formed in the direction of rotation about the central axis at the rear end of the guide groove, Skin care treatment device comprising a second coupling groove formed symmetrically with the first coupling groove about the central axis The method of claim 2,
Protruding portion is formed at the rear end of the shaft coupling block, the skin beauty treatment device characterized in that the groove is formed in the shaft is inserted. The method of claim 1,
The body cap has a plurality of first cap coupling grooves formed from the front end to the rear end, and a plurality of second cap couplings formed in the direction of rotation about the central axis of the body cap at each rear end of the plurality of first cap coupling grooves. Grooves are formed,
The needle cap is a skin care device, characterized in that a plurality of coupling protrusions are formed which can be inserted into the plurality of first cap coupling grooves and the second cap coupling grooves, respectively. The method of claim 4, wherein
The skin care treatment device, characterized in that the second cap coupling groove is formed with a locking projection to prevent the needle cap from rotating after assembly. The method of claim 1,
The needle cap has a plurality of first cap coupling grooves formed from the rear end to the front end, and a plurality of second cap couplings formed in the direction of rotation with respect to the central axis of the needle cap at each end of the plurality of first cap coupling grooves. Grooves are formed,
The body cap is a skin care treatment device, characterized in that formed in the plurality of coupling protrusions which can be inserted into the plurality of first cap coupling grooves and the second cap coupling grooves, respectively. The method of claim 1,
Skin treatment device characterized in that the inner circumferential surface of the needle cap is formed with a locking projection to prevent it from falling out after the needle fixing block is inserted The method of claim 1,
The plurality of power connection rods have elasticity that can be stretched or bent, and the plurality of power terminals are formed by indenting the inside of the concave groove formed in the front end surface of the body cap. The method of claim 1,
The shaft includes a connecting portion protruding from the front end surface and a coupling block having a maximum diameter greater than that of the connecting portion, the maximum diameter of which is formed at the tip of the connecting portion.
The shaft coupling means is formed in the longitudinal direction from the rear end surface of the shaft fastening protrusion and the shaft fastening protrusion formed in the rear end of the needle fixing block and the guide groove having a width that can enter the coupling block of the shaft and the A skin care treatment device comprising a first coupling groove formed in a direction of rotation about a central axis at the tip of the guide groove, and a second coupling groove symmetrically formed with the first coupling groove about the central axis. The method according to any one of claims 1 to 9,
The driving means includes:
Servo motor;
A ball screw having a screw shaft rotated by the servo motor and a nut penetrated by the screw shaft, and converting a rotational force of the servo motor into linear motion;
It includes, The shaft is a skin care device characterized in that coupled to the nut of the ball screw to perform a reciprocating linear motion with the nut

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