KR100854751B1 - Motor assembly and personal care device having the same - Google Patents

Abstract

A motor assembly and a gearing beauty care system having the same are provided to easily design and manufacture an elastic spring connection structure and to precisely implement an elastic force and a restoration force of target intensity. A motor assembly(100) includes: a stator(110) for generating a magnetic force to left and right ends(111a,111b); a fixing auxiliary tool(120); a rotor(130) composed of a base(131) installed between the left and right ends of the stator, a central axis(132) with a top portion fixedly coupled to a middle portion of the fixing auxiliary tool and a bottom portion fixedly coupled to a middle portion of the base, and a magnet(133) fixedly installed on the base with a relative angle to the left and right ends of the stator in an adjacent position; and a plurality of elastic springs(140) with top ends fixedly coupled to the fixing auxiliary tool and bottom portions fixedly coupled to the base of the rotor in a position spaced apart from the central axis of the rotor.

Description

Motor assembly and electric beauty device having same {Motor assembly and personal care device having the same}

The present invention relates to a motor assembly and an electric beauty appliance having the same, and more particularly, to a motor assembly and an electric beauty appliance having the same to generate a vibration to effectively wash or massage the skin.

Vibration can be used to easily remove impurities deep in the skin, promote absorption of beauty cream, or effectively massage the skin, and actively apply pressure to the skin even when an individual user or a caregiver performs facial cleansing or massage. The use of beauty instruments having a vibrating function is being expanded by enabling face washing and massage with more convenience and less force without the need of applying or repeatedly performing a reciprocating movement.

Such beauty instruments are conventionally known as a beauty massage district of Korea Utility Model Registration No. 16406, a beauty massager of Korea Utility Model Publication No. 1988-1292, a beauty massager of Korea Utility Model Publication No. 1944-22020, US Patent Registration No. A number of designs including vibration generating motors for portable beauty instruments of No. 7,157,816 have been devised, and in recent years, continuous development has been made to meet the needs of consumers.

The vibration generating motor of the portable beauty device of US Patent No. 7,157,816 has a structure using a torsion bar spring as a spring having a restoring force for returning the rotor of the motor assembly to its original position. Is a rod-shaped steel having restoring force by torsional deformation. In order to join the end of the torsion bar spring to a separate connecting member, it is necessary to process a groove or tooth to form a high tension spring steel, not general steel. As it is manufactured by twisting, it is difficult to apply general cutting and press working, and thus there is a problem in that it is difficult to design for coupling with other connecting members.

In addition, when the torsion bar spring is used, the torsion bar spring must be located at the center of rotation of the rotor, so only one can be provided, and the strength of the elastic force and the restoring force can be adjusted by adjusting the material, length or thickness of the torsion bar spring itself. There was no choice but to adjust the specified strength by adjusting the material, length, and thickness, and it was difficult to separately manufacture the torsion bar spring corresponding to each elastic force and the restoring force.

In addition, in order to stably deform the torsion bar torsional deformation, it must have a certain length or more, and thus, there is a limit in implementing the miniaturization of the motor assembly, and the resistance to bending is weak, so that excellent processing precision and assembly precision are required. There was another problem of difficulty.

The present invention devised to solve the problems as described above, the design and manufacture of the elastic spring connection structure can be made more easily in using the elastic spring can improve the productivity and cost reduction, and clearly and easily It is an object of the present invention to provide a motor assembly and an electric beauty instrument having the same that can implement elasticity and restoring force of a specified intensity, and to realize more compactness, thereby contributing to improving the appearance and usability of a product.

The present invention for achieving the object as described above, in the vibration generating motor assembly 100 is installed in a portable beauty device having a vibration function, is fixed to the inside of the cover 300 and the insulated conductor 210 around the periphery A stator 110 that winds and passes a current to generate magnetic force at left and right ends 111a and 111b extending forwardly; A high information tool 120 fixedly installed across the space between the left and right ends 111a and 111b of the stator from above the stator 110; The base 131 is installed between the left and right ends 111a and 111b of the stator, and the upper portion of the high information aid 120 is positioned at a same distance from the left and right ends 111a and 111b of the stator. The central shaft 132 is rotatably coupled to the middle portion of the base and the lower end portion is fixedly coupled to the middle portion of the base 131, and the base (A) is adjacent to the left and right ends 111a and 111b of the stator. A rotor 130 having two left and right magnets 133 fixed to the 131; And a top end fixedly coupled to the high information tool 120 at a position spaced apart from the central axis 132 of the rotor, and a bottom end fixedly coupled to the base 131 of the rotor, and formed on the stator 110. And a plurality of elastic springs 140 which bend in proportion to the displacement of the rotor 130 by the magnetic force and provide a restoring force to return the rotor 130 to the initial position by the extinction of the magnet. The motor assembly 100 is a technical gist.

Here, the left and right end portions 111a and 111b of the stator have a concave curved surface in a shape corresponding to the circumference of the side portion adjacent to the rotor 130 centered on the center axis 132 of the rotor, The magnet 133 of the rotor, the side portion adjacent to the stator 110 preferably forms a convex curved surface corresponding to the concave curved surface of the left and right ends of the stator 110.

In addition, the high information tool 120 is preferably fixed to the stator 110 by a fixing bolt passing through the distal end of the high information tool 120 and the end of the stator 110.

In addition, the elastic spring 140, it is preferable that a plurality of symmetrically spaced apart based on the center axis 131 of the rotor is installed.

In addition, the elastic spring 140 is preferably an axial metal pin 141 having an extension length in the vertical direction.

Here, the metal pin 141 is preferably installed in parallel with the central axis 132 of the rotor.

The base 131 of the rotor may include a plate-shaped shaft engaging portion 131a positioned on a hollow space and providing a connection surface to which a portion of the lower end of the central axis 132 of the rotor may be coupled; A magnet coupling portion (131b) bent at the distal end of the axial coupling portion (131a) such that the magnet (133) of the rotor provides a mating connection surface at the side; And a pin coupling portion (131c) continuously formed at an edge of the shaft coupling portion (131a) to provide a connection surface to which a portion of the lower end of the metal pin (141) is coupled at a position spaced apart from the central axis (132) of the rotor. It is preferably configured to include.

In addition, the elastic spring 140 is preferably a leaf spring 142 having an extension length in the vertical direction.

Here, the leaf spring 142 has a connection surface connectable to the upper or lower surface of the base 131 of the rotor, the rotor coupling portion 142a fixedly coupled to the base 131 of the rotor ; And a bending spring portion 142b that is bent from the rotor coupling portion 142a and extends in the vertical direction.

The base 131 of the rotor may include a plate-shaped shaft engaging portion 131a positioned on a hollow space and providing a connection surface to which a portion of the lower end of the central axis 132 of the rotor may be coupled; A magnet coupling portion (131b) bent at the distal end of the axial coupling portion (131a) such that the magnet (133) of the rotor provides a mating connection surface at the side; And bent toward the high information tool 120 side from the edge of the shaft coupling portion 131a so that the distal end is introduced into the slit 121 recessed or penetrated by the high information tool 120. The vibration width limiting portion 131d which limits the rotational displacement of the rotor 130 within the movement width formed by 121 is preferably configured to include.

In addition, the present invention, the motor assembly 100; A circuit board for controlling a current supply state to the stator 110 of the motor assembly, the power source 220 for supplying current to the insulated conductor 210 wound around the stator 110, and the insulated conductor 210 A cover 300 which secures and accommodates the connection surface 230 and the accommodation space; And one side of which is connected to the central axis 132 of the rotor of the motor assembly, and the other side of which is exposed to one side of the cover 300 to cover the vibration generated by the microdisplacement repeating rotation of the rotor 130. Vibration ball 400 to be transmitted to the outside; the electric beauty device configured to include as another technical gist.

According to the present invention having the above-described configuration, the base and the central axis of the rotor is rotated by the magnetic force formed in the stator and the elastic spring is flexurally deformed, and the rotor is in the initial position by the restoring force of the elastic spring when the stator is extinguished By repeating the return to the micro-displacement of the rotor by the repeated rotation has the effect of implementing the operating principle to stably generate the vibration.

In addition, as the elastic spring is flexural deformation and restoring operation structure, the elastic spring can be made of metal pins or leaf springs which can be easily manufactured at low cost, and thus the elastic spring is coupled to the base of the high information tool or the rotor. In implementing the coupling structure to make it has the effect that the design and manufacturing can be made more easily.

In addition, by adjusting the material, length, width, and thickness of the metal pins or leaf springs, not only the elastic force and the restoring force can be realized in various strengths, but also by adjusting the number and the installation positions of the metal pins or leaf springs made in a certain shape, There is another effect that the strength of the elastic force and the restoring force can be adjusted more easily and clearly without the necessity of separately manufacturing a metal pin or leaf spring having elasticity and restoring force.

In addition, in the elastic spring to implement the elastic force and the restoring force of the strength required to implement the vibration function of the beauty instrument, it can be implemented without any force to the vertical length corresponding to the separation distance between the high information tool and the base of the rotor, elastic spring As the intensity can also be easily adjusted by adjusting the number of the mounting positions and the installation position, by utilizing a constant space formed between both ends of the stator without having to additionally have a vertical space for installing the elastic spring. The installation can be made space-efficiently, so that the motor assembly can be manufactured in a smaller size, and accordingly, other effects of the product's appearance can be more freely implemented and the usability of the product can be further improved. have.

The motor assembly 100 according to the present invention is composed of a stator 110, a high information tool 120, a rotor 130, and an elastic spring 140, by a current applied to the stator 110. When the stator 110 generates a magnetic force, the rotor 130, one end of which is rotatably coupled to the high information tool 120, rotates and the elastic spring 140 of the rotor 130 is rotated. When the current supply is stopped and the magnetic force of the stator 110 is extinguished, the rotor 130 rotates back to its original position by the restoring force of the elastic spring 140. It will implement the principle of operation.

The motor assembly 100 according to the present invention is a vibration generating motor assembly installed in a portable beauty apparatus having a vibration function, and includes a stator 110 of the motor assembly and an insulated wire 210 wound around the stator 110. Cover 300 of a beauty instrument having a connection surface and a receiving space for fixing and accommodating a power source 220 for supplying a current and a circuit board 230 for controlling a current supply state to the insulated conductor 210. The installation will be done inside.

The stator 110 is fixedly installed in the cover 300 having a connecting surface to which the stator 110 can be fixed and an accommodating accommodation space, and wound the insulated wire 210 around the middle of the stator 110. When the current is supplied to the conductive wire 210, magnetic force is generated at the left and right ends 111a and 111b extending toward the front side by the principle of the electromagnetic force, and when the current supply to the insulated conductor 210 is stopped, the left and right The magnetic force generated at the right ends 111a and 111b is extinguished.

The high information tool 120 is a component that is fixed to the spaced apart space between the left and right ends 111a, 111b of the stator across the stator 110, the state is fixedly installed with the stator 110 In the support, a support that is capable of engaging or constraining the upper end of the elastic spring 140 and the central axis 132 (described below) of the rotor extending upward from the space between the left and right ends 111a and 111b of the stator Provide a frame.

The high information tool 120 is preferably made of an engineering plastic material that can not be arbitrarily deformed so as not to be bent or deformed by the pressing force transmitted from the elastic spring 140, and the distal end of the high information tool 120 It is fixed to the stator 110 by a fixing bolt 122 penetrating the distal end of the stator 110, to maintain a constant relative position with respect to the stator (110).

The rotor 130 has a structure largely composed of a base 131, a central axis 132, and a magnet 133, and the base 131 is disposed between left and right ends 111a and 111b of the stator. Is installed, the central shaft 132 is extended to the high information tool 120 in a state in which the lower end is coupled to the middle portion of the base 131 is rotatably coupled to the high information tool 120, The magnet 133 is fixed to the base 131 so as to generate a movement displacement toward the left and right ends 111a and 111b of the stator by the magnetic force generated by the stator 110.

The base 131 provides a connection surface to which the central axis 132, the magnet 133, and the elastic spring 140 can be fixedly coupled, and the movement and elastic spring of the magnet 133 during the operation of the present invention. The material, shape, and structure thereof are not particularly limited as long as they have rigidity that does not deform even when stress is applied by the deformation of 140, but it is preferable to have a flat plate shape that is easy to process and has a small volume.

The base 131 is positioned on a hollow space formed between the left and right ends 111a and 111b of the stator, and when formed in a flat plate shape, a portion of the lower end of the central axis 132 of the rotor is coupled. A plate-shaped shaft coupling portion 131a which provides a possible connection surface, and a magnet coupling portion bent at the distal end of the shaft coupling portion 131a to provide a connection surface to which the magnet 133 of the rotor can be coupled laterally. 131b.

The central shaft 132 has a vertical vertical length in the vertical direction, is installed at the same distance from the left and right ends 111a, 111b of the stator, the upper portion of the high information tool 120 It is rotatably coupled by a shaft support member, such as a bearing member (not shown) in the middle portion of the lower portion, the lower end is fixedly coupled to the middle portion of the base 131 and the center of the base 131 during the operation of the invention The shaft 132 is moved at the same rotation angle displacement.

The magnet 133 is fixed in the circumferential direction with respect to the left and right ends 111a and 111b of the stator with respect to the left and right ends 111a and 111b of the stator with respect to the central axis 132. It is fixed to the base 131 so as to have a relative angle, the left and right ends corresponding to the left and right ends 111a and 111b of the stator are provided, and the left and right ends 111a and 111b of the stator are provided. The left and right pair of magnets 133 are attracted by the generated magnetic force to move closer to the left and right ends 111a and 111b of the stator.

The left and right end portions 111a and 111b of the stator are considered in consideration of operating efficiency according to the rotational displacement of the base 131 of the rotor and the opposing area of the rotor 133. The side portion adjacent to the rotor 130 preferably has a concave curved surface in a shape corresponding to the circumference of the center axis 132 of the rotor, the magnet 133 of the rotor Side portions adjacent to the stator 110 in consideration of the operating efficiency according to the expansion of the opposing areas of the left and right ends 111a and 111b and the firmness of the rotor with the base 131 are formed in the stator 110. It is preferable to be produced in one piece forming a convex curved surface corresponding to the concave curved surface of the left and right ends.

The elastic spring 140, at a position spaced apart from the central axis 132 of the rotor, the upper end is fixedly coupled to the high information tool 120 and the lower end is fixed on the base 131 of the rotor Coupled, the rotor 130 is bent in proportion to the displacement of the rotor 130 is rotated by the magnetic force formed in the stator 110, and the rotor 130 is returned to the initial position by the extinction of the magnet 110 Provide resilience.

Hereinafter, the motor assembly 100 according to the present invention having the configuration as described above will be described in more detail with respect to the first and second embodiments having elastic springs 140 having different structures. It will also be described with respect to the electric beauty device provided with a motor assembly according to the present invention as another technical gist.

First, with reference to the following drawings will be described a first embodiment of the motor assembly according to the present invention and the electric beauty device having the same.

1 is a partially exploded perspective view showing a first embodiment of a motor assembly according to the present invention, Figure 2 is a bottom view of the main part of Figure 2, Figure 3 shows a first embodiment of the electric beauty appliance according to the invention This is a partial explanatory view.

In the first embodiment of the motor assembly according to the present invention, the elastic spring 140, as shown in Figure 1, 2 is composed of a shaft-shaped metal pin 141 having an extension length in the vertical direction.

If the metal pin 141 is lowered by the rotation of the base 131 of the rotor and the bending deformation is generated and can be returned to the original position and the original position by the restoring force, the upper and lower ends are inclined to be located on different circumferential lines The upper and lower ends may be installed to be inclined at different distances from the center axis 132 of the rotor, but may be installed to be inclined. It is preferable to be installed upright in parallel to the vertical direction.

The metal pin 141 may be provided with only one if the elastic force and the restoring force can be implemented as described above. However, the metal pin 141 may be installed at a position spaced apart from the center axis 132 of the rotor. In order to prevent the stress from being concentrated on only one side of the base 131 of the rotor, it is preferable to install a plurality of symmetrically spaced apart with respect to the center axis 132 of the rotor.

In order to couple the metal pins 141, the base 131 of the rotor may be spaced apart from the central axis 132 of the rotor, in addition to the condensation coupling part 131a and the magnet coupling part 131b. Part of the lower end of the metal pin 141 has a structure further including a pin coupling portion 131c continuously formed at the edge of the axial coupling portion (131a) to provide a coupling surface.

The first embodiment of the electric cosmetic device according to the present invention having the first embodiment of the motor assembly 100 having the above configuration, as shown in Figure 3 accommodates the motor assembly 100 therein And a cover 300 having a button operation part for manipulating the motor assembly 100, one side of which is connected to the central axis 132 of the rotor of the motor assembly, and the other side of the cover (2). It is exposed to one side of 300 has a configuration consisting of a vibrating hole 400 for transmitting the vibration generated by the microdisplacement repeated rotation of the rotor 130 to the outside of the cover.

For the first embodiment of the electric cosmetic device, other components except for the motor assembly 100 according to the technical information known in the electric beauty device field will be omitted.

Next, a first embodiment of a motor assembly and an electric beauty appliance having the same will be described with reference to the following drawings.

4 is a partial exploded perspective view showing a second embodiment of the motor assembly according to the present invention, Figure 5 is a bottom view of the main part of Figure 4, Figure 6 shows a first embodiment of the electric beauty appliance according to the invention This is a partial explanatory view.

In the second embodiment of the motor assembly according to the present invention, the elastic spring 140, as shown in Figure 4, 5 is composed of a leaf spring 142 having an extension length in the vertical direction.

The leaf spring 142 is largely composed of a rotor coupling portion 142a and a bending spring portion 142b, and the rotor coupling portion 142a extends over the upper or lower surface of the base 131 of the rotor. A connection surface fixed to the base 131 of the rotor and fixedly coupled thereto, and the bending spring portion 142b is bent from the rotor coupling portion 142a to extend in the vertical direction to substantially the It is to perform the function of the elastic spring 140, the bending spring portion 142b is also formed so that a plurality of symmetrically spaced apart based on the center axis 132 of the rotor like the metal pin 141 desirable.

The elastic force and the restoring force can be easily adjusted by adjusting the number, thickness, width, and length of the bending spring portion 142b, and the bending spring portion 142b is formed in a plate shape, so that the metal pins 141 Compared with), it is preferable to have a separate component that can be deformed more flexibly to limit the rotational displacement of the rotor 130.

Accordingly, a second embodiment of the motor assembly according to the present invention includes a slit 121 recessed or penetrated to a predetermined length on the high information tool 120 and the shaft coupling portion 131a of the rotor base. The rotor 130 is bent from the edge to the side of the high information tool 120 and within the moving width formed by the slit 121 of the high information tool in a state where the distal end is introduced into the slit 121 of the high information tool. Preferably, the vibration width limiting portion 131d is provided to limit the rotational displacement.

The second embodiment of the electric beauty device according to the present invention having the second embodiment of the motor assembly 100 having the above configuration, as shown in Figure 6 accommodates the motor assembly 100 therein And a cover 300 having a button operation part for manipulating the motor assembly 100, one side of which is connected to the central axis 132 of the rotor of the motor assembly, and the other side of the cover (2). It is exposed to one side of 300 has a configuration consisting of a vibrating hole 400 for transmitting the vibration generated by the microdisplacement repeated rotation of the rotor 130 to the outside of the cover.

Second embodiment of the electric beauty device Also, as in the first embodiment of the electric beauty device, other components except for the motor assembly 100, according to the known technology in the field of electric beauty equipment The detailed description thereof will be omitted.

According to the motor assembly and the electric beauty device having the same according to the present invention, the elastic spring 140 at the same time the base 131 and the central shaft 132 of the rotor is rotated by the magnetic force formed in the stator 110 The bending deformation is repeated, and the rotor 130 is returned to the initial position by the restoring force of the elastic spring 140 when the magnetic force of the stator 110 is extinguished, and the microdisplacement of the rotor 130 is repeated. The operating principle of stably generating vibration by rotation is realized.

As the elastic spring 140 implements an operation structure in which bending deformation and restoration are performed, the elastic spring 140 may be configured as the metal pin 141 or the leaf spring 142 which can be easily manufactured at low cost. Accordingly, in the implementation of the coupling structure for coupling the elastic spring 140 to the high information tool 120 or the base 131 of the rotor can be more easily designed and manufactured.

And, by adjusting the material, length, width, thickness of the metal pin 141 or the leaf spring 142, not only the elastic force and the restoring force can be realized in various strengths, but the metal pin 141 or the leaf spring ( By adjusting the number of the 142 and the installation position, the strength of the elastic force and the restoring force can be adjusted more easily and clearly without the need to separately manufacture the metal pin 141 or the leaf spring 142 having different strength and restoring force. .

In addition, in the elastic spring 140 to implement the elastic force and the restoring force of the strength required to implement the vibration function of the beauty instrument, the high distance between the tool 120 and the base 131 of the rotor corresponding to It can be implemented without any difficulty in the vertical length, the intensity can also be easily adjusted by adjusting the number and the installation position of the elastic spring 140.

Accordingly, the installation may be efficiently performed by utilizing a constant space formed between both ends of the stator 110 without having to further include a vertical space for installation of the elastic spring 140, the motor The assembly can be manufactured in a more compact size, and thus, the appearance of the product can be more freely implemented and the usability of the product can be further improved according to the needs of the consumer.

The present invention has been described with reference to preferred embodiments of the present invention, but the present invention is not limited to these embodiments, and the embodiments of the present invention together with the embodiments of the present invention are merely combined with the existing known art, and the claims and details thereof. In the description it should be seen that the techniques that can be used by those skilled in the art to which the present invention pertains are naturally included in the technical scope of the present invention.

1-A partial partial perspective view showing a first embodiment of a motor assembly according to the present invention

Fig. 2-bottom view of the main part of Fig. 2

3-A partial partial perspective view showing a first embodiment of the electric beauty appliance according to the present invention

Figure 4-Partial exploded perspective view showing a second embodiment of the motor assembly according to the present invention

Fig. 5-bottom view of the main part of Fig. 4

Fig. 6-A partial partial perspective view showing a first embodiment of the electric beauty appliance according to the present invention.

<Description of Major Symbols Used in Drawings>

100: motor assembly 110: stator

111a: Left end of the stator 111b: Right end of the stator

120: old information 121: slit

122: fixing bolt 130: rotor

131: base 131a: shaft coupling portion

131b: magnet coupling portion 131c: pin coupling portion

131d: vibration limit unit 132: central axis

133: magnet 140: elastic spring

141: metal pin 142: leaf spring

142a: rotor coupling part 142b: bending spring part

210: insulated wire 220: power source

230: circuit board 300: cover

400: vibrating hole

Claims (11)

In the vibration generating motor assembly 100 which is installed in a portable beauty device having a vibration function, A stator 110 fixedly installed inside the cover 300 and generating magnetic force at left and right ends 111a and 111b extending toward the front side by passing an electric current by winding the insulated conductor 210 around the periphery; A high information tool 120 fixedly installed across the space between the left and right ends 111a and 111b of the stator from above the stator 110; The base 131 is installed between the left and right ends 111a and 111b of the stator, and the upper portion of the high information aid 120 is positioned at a same distance from the left and right ends 111a and 111b of the stator. The central shaft 132 is rotatably coupled to the middle portion of the base and the lower end portion is fixedly coupled to the middle portion of the base 131, and the base (A) is adjacent to the left and right ends 111a and 111b of the stator. A rotor 130 having two left and right magnets 133 fixed to the 131; And The upper end is fixedly coupled to the high information tool 120 at a position spaced apart from the central axis 132 of the rotor, the lower end is fixedly coupled to the base 131 of the rotor, the magnetic force formed in the stator 110 An elastic spring 140 that bends in proportion to the displacement of the rotor 130 rotated by the rotor 130 and provides a restoring force for returning the rotor 130 to an initial position by the extinction of magnetic force; Motor assembly 100, characterized in that comprises a. The left and right ends of the stator 111, 111b, A side portion adjacent to the rotor 130 forms a concave curved surface in a shape corresponding to the circumference of the center axis 132 of the rotor, The magnet 133 of the rotor, The motor assembly 100, characterized in that the side portion adjacent to the stator 110 forms a convex curved surface corresponding to the concave curved surface of the left and right ends of the stator 110. The method of claim 1, wherein the old information tool 120, Motor assembly 100, characterized in that fixed to the stator 110 by a fixing bolt passing through the distal end of the high information tool 120 and the distal end of the stator (110). The method of claim 1, wherein the elastic spring 140, Motor assembly 100, characterized in that a plurality of symmetrically spaced apart is installed based on the central axis (132) of the rotor. The method of claim 1, wherein the elastic spring 140, Motor assembly 100, characterized in that the shaft-shaped metal pin 141 having an extension length in the vertical direction. The method of claim 5, wherein the metal pin 141, The motor assembly 100, characterized in that installed in parallel with the central axis (132) of the rotor. The method of claim 5, wherein the base 131 of the rotor, A plate-shaped shaft engaging portion (131a) positioned on the hollow space and providing a connection surface to which a portion of the lower end of the center shaft (132) of the rotor is engageable; A magnet coupling portion (131b) bent at the distal end of the axial coupling portion (131a) such that the magnet (133) of the rotor provides a mating connection surface at the side; And A pin coupling portion (131c) continuously formed at an edge of the shaft coupling portion (131a) to provide a connection surface to which a portion of the lower end of the metal pin (141) is coupled at a position spaced apart from the central axis (132) of the rotor; Motor assembly 100, characterized in that comprises a. The method of claim 1, wherein the elastic spring 140, Motor assembly 100, characterized in that the leaf spring having a length extending in the vertical direction (142). The method of claim 8, wherein the leaf spring 142, A rotor coupling part 142a fixedly coupled to the base 131 of the rotor by having a connection surface connectable to an upper or lower surface of the base 131 of the rotor; And A bending spring portion 142b that is bent at the rotor coupling portion 142a and extends in a vertical direction; Motor assembly 100, characterized in that comprises a. The method of claim 8, wherein the base 131 of the rotor, A plate-shaped shaft engaging portion (131a) positioned on the hollow space and providing a connection surface to which a portion of the lower end of the center shaft (132) of the rotor is engageable; A magnet coupling portion (131b) bent at the distal end of the axial coupling portion (131a) such that the magnet (133) of the rotor provides a mating connection surface at the side; And The slit 121 of the high information tool is formed by bending toward the high information tool 120 from the edge of the shaft coupling portion 131a so that the distal end is introduced into the slit 121 recessed or penetrated by the high information tool 120. Oscillation width limiting portion (131d) to limit the rotational displacement of the rotor 130 within the moving width formed by; Motor assembly 100, characterized in that comprises a. Motor assembly according to any one of claims 1 to 10; A circuit board for controlling a current supply state to the stator 110 of the motor assembly, the power source 220 for supplying current to the insulated conductor 210 wound around the stator 110, and the insulated conductor 210 A cover 300 which secures and accommodates the connection surface 230 and the accommodation space; And One side is connected to the central axis 132 of the rotor of the motor assembly and the other side is exposed to one side of the cover 300 to the vibration generated by the micro-displacement repeated rotation of the rotor 130 outside the cover Vibration sphere 400 to be transmitted to; Electric beauty appliance comprising a.

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