Skin care device including lightweight handpiece

Abstract

The present invention relates to a skin care device including a lightweight handpiece. The skin care device comprises: a handpiece for skin treatment which comes into contact with the skin and stimulates the skin; a control body which is connected to the handpiece for skin treatment through a connection cable body and controls the operation of the handpiece for skin treatment; a driving force generating unit which is mounted inside the control body and generates a driving force; a handpiece operating body which is provided in the handpiece for skin treatment and operates by receiving the driving force from the driving force generating unit; and a driving force transmission unit for transmitting the driving force of the driving force generating unit to the handpiece operating body through the inside of the connection cable body. Since the driving force generating unit for operating the handpiece operating body is mounted on the control body, the weight of the handpiece for skin treatment is reduced, thereby greatly improving the convenience of a practitioner and the satisfaction of treatment during treatment, and simplifying the structure of the handpiece for skin treatment.

Description

Skin care device including lightweight handpiece

[0001] The present invention relates to a skin care device including a lightweight handpiece, and more particularly, to a skin care device including a lightweight handpiece by mounting a driving force generating unit for the handpiece to a control body.

[0002] As interest in skin care has been increasing day by day, various skin care devices are being developed.

[0003] Devices for skin care are proposed in various structures, such as skin treatment devices using ultrasound, skin treatment devices using laser, skin treatment devices using RF energy, skin cleansing devices for face lifting or skin tightening treatments, and cooling fat dissolving treatment devices.

[0004] A device for skin care using ultrasound uses a handpiece for generating ultrasound to generate heat from high-intensity focused ultrasound waves in skin tissue at a certain depth from the skin surface, thereby inducing degeneration and regeneration of skin tissue, thereby producing skin beauty effects such as wrinkle improvement or cosmetic surgery.

[0005] In addition, a skin treatment device using a laser uses a handpiece for generating a laser to irradiate the skin with a laser of a certain size as a point, and only applies heat with the laser to the target area to damage the skin tissue, treating the patient's skin. It is used for various purposes such as preventing hair loss, promoting hair growth, peeling, skin regeneration, whitening, removing wrinkles or spots, and removing freckles.

[0006] In addition, a skin treatment device using RF energy is performed by applying electric power to the RF electrode while the RF electrode is in close contact with the skin using a handpiece equipped with an RF electrode to deliver RF energy to the patient's skin, and is used in various ways, such as skin remodeling / resurfacing through contraction or wound healing response of collagen in the lower dermis, wrinkle removal, and treatment of sebaceous glands, hair follicles, fatty tissue, and spider veins.

[0007] In addition, the skin cleansing device treats the patient's skin by discharging a cleansing solution to the skin surface through a skin cleansing handpiece to penetrate functional cosmetic ingredients into the skin and polishing the skin surface.

[0008] Additionally, a cryolipolysis device for cryolipolysis treatment is used in which a cooling cup is mounted on one handpiece to cool the treatment area of ​​the patient.

[0009] Cooling cups are divided into suction-type, which cools the patient's skin by suction, and non-suction-type, which does not, and their performance varies depending on the type and quantity of thermoelectric elements attached to the cooling cup.

[0010] The practitioner can increase the effectiveness of cryolipolysis by selecting the most suitable cooling cup among various types of cooling cups depending on the patient's obesity status or the treatment area.

[0011] Meanwhile, the skin care device includes a skin treatment handpiece that performs a skin treatment by contacting the skin of a subject and stimulating the skin, and a control body that is connected to the skin treatment handpiece by a cable and controls the operation of the handpiece for generating ultrasound.

[0012] A handpiece for skin treatment is provided with a skin stimulation generating unit that stimulates the skin, and a driving force generating unit for moving or rotating the skin stimulation generating unit.

[0013] Additionally, the handpiece for skin treatment may be equipped with a driving force generating unit for generating vibrations for skin massage, etc.

[0014] For example, a handpiece for generating ultrasound or a handpiece for generating laser is equipped with a driving motor that moves the ultrasound or laser generating unit in a straight line or rotates it at a preset radius.

[0015] Additionally, the skin cleansing handpiece is equipped with a driving motor for rotating the polishing pad.

[0016] In addition, the skin cleansing handpiece, the handpiece equipped with an RF electrode, the cooling cup, and the skin cleansing handpiece are equipped with a vibration motor to generate vibrations for massaging the skin.

[0017] That is, conventional skin care devices have a driving force generating unit such as a driving motor or a vibration motor located within a skin treatment handpiece, and include a substrate having a driving circuit and a sensing circuit for controlling the operation of the driving force generating unit, a gear structure for transmitting the rotational force of the motor, etc., which has a problem in that the size and shape of the skin treatment handpiece are limited.

[0018] In addition, the handpiece for skin treatment is heavy because it includes a motor, a substrate, and a gear structure for transmitting the rotational power of the motor, and there is a problem that the vibration generated when the motor is operated during treatment puts a strain on the operator's wrist and causes discomfort during the treatment movement.

[0019] A prior patent related to the present invention is Korean Patent Registration No. 1307551, “Handpiece of ultrasonic device” (registered on September 5, 2013).

[0020] In addition, a prior patent related to the present invention is Korean Patent Registration No. 2038941, “Handpiece for laser treatment and fat reduction device having the same” (registered on October 25, 2019).

[0021] The purpose of the present invention is to provide a skin care device including a lightweight handpiece that can simplify the structure of a handpiece for skin treatment and reduce the weight by mounting a driving force generating unit that operates an actuator within the handpiece to a control body.

[0022] In order to achieve the above object of the present invention, one embodiment of a skin care device including a lightweight handpiece according to the present invention is characterized by including a skin treatment handpiece that contacts the skin to stimulate the skin, a control body that is connected to the skin treatment handpiece via a connection cable body and controls the operation of the skin treatment handpiece, a driving force generating unit that is mounted inside the control body and generates a driving force, a handpiece actuator that is provided in the skin treatment handpiece and operates by receiving the driving force of the driving force generating unit, and a driving force transmitting unit that passes through the inside of the connection cable body and transmits the driving force of the driving force generating unit to the handpiece actuator.

[0023] In the present invention, the driving force generating unit may include a rotary motor unit that generates a rotational force, and the driving force transmitting unit may include a rotary force transmitting unit that transmits the rotational force of the rotary motor unit to the handpiece actuator.

[0024] In the present invention, the rotational force transmission unit may include a first pulley member that is rotatably positioned inside the control body and rotates by receiving the rotational force of the rotational motor unit, a second pulley member that is rotatably positioned inside the skin treatment handpiece, and a belt structure that has one end wound around the first pulley member and the other end wound around the second pulley member.

[0025] In the present invention, the belt structure may be one of a wire-type belt, a belt-type belt, a V-belt, and a chain.

[0026] In the present invention, the rotational power transmission unit may further include a belt movement guide tube unit that is fixed to the inside of the connecting cable body and supports the position of the belt structure through which the belt structure passes and moves.

[0027] In the present invention, the connecting cable body may further include an operating control cable passing through the inside, an outer skin portion wrapping the belt structure, and an elastic filler material filled inside the outer skin portion to support the positions of the operating control cable and the belt movement guide tube portion.

[0028] In the present invention, the handpiece for skin treatment includes a cartridge housing part having a skin stimulation generating part that stimulates the skin, and a handpiece main body casing part to which the cartridge housing part is detachably coupled, and the driving force transmitting part may further include a cartridge driving part that is located within the cartridge housing part and receives a rotational force from the rotational force transmitting part to linearly or rotate the handpiece actuator.

[0029] In the present invention, the operating shaft of the drive unit for the cartridge can be detachably coupled to the operating shaft of the rotational force transmission unit.

[0030] In the present invention, the actuator for the handpiece may include the skin stimulation generating unit located within the cartridge housing, and the driving unit for the cartridge may include a linear movement conversion unit that linearly moves the skin stimulation generating unit.

[0031] In the present invention, the linear movement conversion unit may include a screw member that is rotatably positioned within the handpiece body casing and rotates by receiving the rotational force of the second pulley member, and a slider that penetrates the screw member and is screw-coupled to move linearly by the rotation of the screw member and is connected to the skin stimulation generating unit.

[0032] In the present invention, the linear movement conversion unit may further include a movement guide pin member positioned through the slider to guide linear movement of the slider.

[0033] In the present invention, the rotational force transmission unit may further include a first rotational direction changing gear member and a second rotational direction changing gear member that change the rotational direction and transmit it to the screw member.

[0034] In the present invention, the linear movement conversion unit may further include a first java member having one end fixed to the inner surface of the cartridge housing and the other end fixed to one end of the slider, folded and unfolded by movement of the slider, and the screw member positioned inside; and a second java member having the other end fixed to the inner surface of the cartridge housing and one end fixed to the other end of the slider, folded and unfolded by movement of the slider, and the screw member positioned inside.

[0035] The present invention has the effect of reducing the weight of a handpiece for skin treatment by mounting a driving force generating unit that operates an actuator within a handpiece to a control body, thereby greatly improving the convenience and satisfaction of the practitioner during treatment.

[0036] In addition, the present invention simplifies the structure of a handpiece for skin treatment, thereby enabling the design of the handpiece for skin treatment without limitations on the size and shape, thereby greatly improving the degree of freedom in handpiece design.

[0037] FIG. 1 is a drawing illustrating one embodiment of a skin care device including a lightweight handpiece according to the present invention.

[0038] FIG. 2 is a cross-sectional view illustrating one embodiment of a skin care device including a lightweight handpiece according to the present invention.

[0039] Figure 3 is an enlarged drawing of part A of Figure 2.

[0040] FIG. 4 is an enlarged view of one embodiment of a connection cable body in one embodiment of a skin care device including a lightweight handpiece according to the present invention.

[0041] *Explanation of major symbols in the drawing

[0042] 100: Handpiece for skin treatment 110: Cartridge housing

[0043] 110a: Window part 120: Handpiece body casing part

[0044] 120a: Cartridge lock 200: Control body

[0045] 210: Connecting cable body 211: Outer skin

[0046] 212: Operating control cable 213: Belt movement guide tube section

[0047] 214: Filler 220: Main control unit

[0048] 300: Driving force generating unit 310: Rotating motor unit

[0049] 400: Handpiece actuator 410: Skin irritation generating unit

[0050] 411: Ultrasonic generator 500: Driving force transmission unit

[0051] 510: Rotational power transmission unit 511: First pulley member

[0052] 512: Second pulley member 513: Belt structure

[0053] 514: First rotation direction change gear member

[0054] 515: Second rotation direction change gear member

[0055] 520: Cartridge drive unit 521: Linear movement conversion unit

[0056] 521a: Screw member 521b: Slider

[0057] 521c: Moving guide pin member 521d: First Javara member

[0058] 521e: Second Javara part 530: Axle adapter part

[0059] 531: Protrusion for shaft coupling 532: Insertion for shaft coupling

[0060] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. However, the technical concept of the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed content is thorough and complete and to sufficiently convey the spirit of the present invention to those skilled in the art.

[0061] In this specification, when a component is referred to as being on another component, it means that it can be formed directly on the other component, or a third component can be interposed between them. Furthermore, in the drawings, the shapes and thicknesses of regions are exaggerated for the purpose of effectively explaining the technical content.

[0062] Additionally, although terms such as first, second, and third have been used to describe various components in various embodiments of this specification, these components should not be limited by these terms. These terms are only used to distinguish one component from another. Thus, what is referred to as a first component in one embodiment may be referred to as a second component in another embodiment. Each embodiment described and illustrated herein also includes its complementary embodiments. Additionally, the term "and / or" has been used herein to mean including at least one of the components listed before and after.

[0063] In the specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In addition, terms such as "comprise" or "have" are intended to specify the presence of a feature, number, step, component, or combination thereof described in the specification, and should not be construed as excluding the possibility of the presence or addition of one or more other features, numbers, steps, components, or combinations thereof. In addition, in the present specification, "connection" is used to mean both indirectly connecting a plurality of components and directly connecting them.

[0064] In addition, when describing the present invention below, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted.

[0065] FIG. 1 is a drawing illustrating one embodiment of a skin care device including a lightweight handpiece according to the present invention.

[0066] One embodiment of a skin care device including a lightweight handpiece according to the present invention includes a skin treatment handpiece (100) that comes into contact with the skin to stimulate the skin, and a control body (200) that is connected to the skin treatment handpiece (100) by a connection cable body (210) and controls the operation of the skin treatment handpiece (100).

[0067] A handpiece (100) for skin treatment has a skin stimulation generating unit (410) that stimulates the skin.

[0068] The skin stimulation generating unit (410) is, for example, one of an ultrasonic generating unit (411) that irradiates ultrasonic waves to the skin, a laser generating unit that irradiates laser to the skin, an RF electrode unit that contacts the skin and transmits RF energy to the skin, a cup unit that contacts the skin and alternately generates negative and positive pressure on the skin, and a skin massage unit that rotates or vibrates while in contact with the skin.

[0069] The skin stimulation generating unit (410) is known in the known skin beauty treatment device or skin care treatment device that stimulates the skin and performs skin beauty or skin care treatment, and a more detailed description thereof is omitted.

[0070] That is, the skin care device including a lightweight handpiece according to the present invention is, for example, any one of a known skin beauty device or a known skin care treatment device including a handpiece for ultrasonic treatment, a skin ultrasound generator including a handpiece for ultrasonic treatment, a skin laser generator including a handpiece for laser treatment, a skin RF energy generator including a handpiece for RF treatment, a negative pressure generator including a handpiece for negative pressure treatment, and a skin massage handpiece.

[0071] A handpiece (100) for skin treatment includes a cartridge housing part (110) having a skin stimulation generating part (410) that comes into contact with the skin and provides stimulation, and a handpiece main body casing part (120) to which the cartridge housing part (110) is detachably coupled.

[0072] The cartridge housing part (110) is a consumable that cannot be used for skin treatment and is replaced when the skin stimulation generating part (410) is used for a preset treatment time or preset number of treatments, and is detachably connected to the handpiece main body casing part (120).

[0073] As an example, the cartridge housing part (110) is coupled by sliding to the tip of the handpiece body casing part (120) and is locked by the cartridge locking part (120a) at the final coupling position to complete the coupling.

[0074] The cartridge locking part (120a) is a button-type locking part located on both sides of the handpiece main body casing part (120). A wedge part is located to hook and support the cartridge housing part (110) on an elastically supported button part, and a detailed description thereof is omitted.

[0075] The control body (200) is connected to the skin treatment handpiece (100) by a connecting cable body (210) including a plurality of wires or a circulation hose, etc., to control the operation of the skin treatment handpiece (100) and to circulate a liquid such as cooling water or a medium within the cartridge housing (110).

[0076] It is to be noted that this can be implemented by variously modifying the control structure applied according to the type of skin stimulation generating unit (410) in a skin care device such as a skin laser generating device, a skin RF energy generating device, a negative pressure generating device, and a skin beauty device.

[0077]

[0078] FIG. 2 is a cross-sectional view illustrating one embodiment of a skin care device including a lightweight handpiece according to the present invention, and FIG. 3 is an enlarged view of part A of FIG. 2.

[0079] Referring to FIGS. 2 and 3, one embodiment of a skin care device including a lightweight handpiece according to the present invention further includes a driving force generating unit (300) mounted inside a control body (200) and generating a driving force, a handpiece actuator (400) provided in a skin treatment handpiece (100) and operated by receiving the driving force of the driving force generating unit (300), and a driving force transmitting unit (500) passing through the inside of a connecting cable body (210) and transmitting the driving force of the driving force generating unit (300) to the handpiece actuator (400).

[0080] The driving force generating unit (300) includes a rotating motor unit (310) that generates rotational force, and the driving force transmitting unit (500) includes a rotational force transmitting unit (510) that transmits the rotational force of the driving force generating unit (300) to the handpiece actuator (400).

[0081] The rotation motor unit (310) is connected to the main control unit (220) located within the control body (200) to control its operation, and the main control unit (220) is electrically connected to the skin stimulation generating unit (410) of the skin treatment handpiece (100) through the connection cable body (210) to control the operation of the skin stimulation generating unit (410).

[0082] The rotational force transmission unit (510) includes a first pulley member (511) that is rotatably positioned inside the control body (200) and rotates by receiving the rotational force of the rotational motor member (310), a second pulley member (512) that is rotatably positioned inside the skin treatment handpiece (100), and a belt structure (513) that has one end wound around the first pulley member (511) and the other end wound around the second pulley member (512).

[0083] The first pulley member (511) is for example mounted on a motor shaft and rotates integrally with the motor shaft, but may also have a structure in which the rotational force of the rotational motor member (310) is transmitted and rotated through a reducer including a plurality of gears.

[0084] The belt structure (513) has one end wound around the first pulley member (511) inside the control body (200) and passes through the inside of the connection cable body (210), and the other end wound around the second pulley member (512) inside the skin treatment handpiece (100) to transmit the rotational force of the first pulley member (511) to the second pulley member (512) through infinite orbital movement.

[0085] The belt structure (513) is made of a flexible material, i.e., one of a wire-type belt, a belt-type belt, a V-belt, and a chain that can be freely bent, for example.

[0086] The belt structure (513) is made of a flexible material, i.e., a freely bendable wire belt, belt-shaped belt, V-belt, or chain. To ensure convenience during treatment, the belt structure passes through the inside of a bendable connecting cable body (210) and transmits the rotational power of the rotational motor unit (310) to the second pulley member (512) through the first pulley member (511).

[0087] The actuator (400) for the handpiece is provided in the handpiece (100) for skin treatment and is a skin stimulation generating unit (410) that generates stimulation to the skin. In one embodiment, it is an ultrasonic generation unit (411) that generates ultrasonic waves and irradiates ultrasonic waves to the skin.

[0088] It is to be noted that the handpiece actuator (400) may include, in addition to the skin stimulation generating unit (410), a cam member for generating vibration, a rotating body such as a fan for blowing air, a camera or sensor that moves linearly, etc., within the handpiece main body casing unit (120).

[0089] The driving force transmission unit (500) is located within the cartridge housing unit (110) and further includes a cartridge driving unit (520) that receives rotational force from the rotational force transmission unit (510) to linearly or rotate the handpiece actuator (400).

[0090] The operating shaft of the drive unit (520) for the cartridge is detachably coupled to the operating shaft of the rotational force transmission unit (510).

[0091] When the cartridge housing part (110) is separated from the handpiece body casing part (120), the operating shaft of the cartridge drive part (520) is separated from the operating shaft of the rotational force transmission part (510), and when the cartridge housing part (110) is coupled to the handpiece body casing part (120), the operating shaft of the cartridge drive part (520) is coupled with the operating shaft of the rotational force transmission part (510) so that the driving force can be transmitted from the rotational force transmission part (510).

[0092] The driving unit (520) for the cartridge includes a linear movement conversion unit (521) that linearly moves the handpiece actuator (400) located within the cartridge housing unit (110).

[0093] The linear movement conversion part (521) includes a screw member (521a) that is rotatably positioned within the handpiece body casing part (120) and rotates by receiving the rotational force of the second pulley member (512), and a slider (521b) that penetrates the screw member (521a) and is screw-coupled to move linearly by the rotation of the screw member (521a).

[0094] The slider (521b) is connected to the handpiece actuator (400), i.e., the ultrasonic generator (411), and moves the ultrasonic generator (411) in a linear reciprocating manner.

[0095] In addition, the linear movement conversion unit (521) further includes a movement guide pin member (521c) positioned to penetrate the slider (521b) and guide the slider (521b) to move in the longitudinal direction, so that the linear movement of the handpiece actuator (400) can be stably and smoothly performed.

[0096] In addition, the rotational force transmission unit (510) may further include a first rotational direction changing gear member (514) mounted on the rotational axis of the second pulley member (512) and a second rotational direction changing gear member (515) mounted on the rotational axis of the screw member (521a) and rotating while engaging with the first rotational direction changing gear member (514) to transmit the rotational force of the second pulley member (512) to the linear movement conversion unit (521), while changing the rotational direction.

[0097] As an example, the first rotation direction changing gear member (514) is a first bevel gear, and the second rotation direction changing gear member (515) is a second bevel gear. In addition, although not shown, a worm gear and a worm wheel gear may be included, and in addition, various modifications may be made to a known gear structure that transmits rotational force by changing the rotational direction.

[0098] An axis adapter part (530) is provided between the rotational axis of the screw member (521a) and the second rotational direction changing gear member (515) to detachably connect the axis, and the axis adapter part (530) includes a shaft coupling protrusion part (531) provided on one end side of the rotational axis of the screw member (521a) and the second rotational direction changing gear member (515), and a shaft coupling insertion part (532) provided on one end side of the rotational axis of the screw member (521a) and the second rotational direction changing gear member (515) and into which the shaft coupling protrusion part (531) is inserted.

[0099] As an example, the protrusion (531) for shaft coupling is a protrusion with a polygonal cross-section, and as an example, the insertion part (532) for shaft coupling is a polygonal insertion groove into which the protrusion (531) for shaft coupling is inserted.

[0100] In addition to the protrusion (531) for shaft coupling and the insertion portion (532) for shaft coupling, the protrusion may be inserted into the insertion portion and may be implemented in various known shapes that can transmit rotational force while being caught in the rotational direction.

[0101] That is, when the cartridge housing part (110) is coupled to the handpiece body casing part (120), the rotational axis of the screw member (521a) and the rotational axis of the second rotational direction changing gear member (515) are connected, so that the screw member (521a) receives the rotational force of the rotational motor part (310) in the control body (200) and rotates, and accordingly, the slider (521b) moves linearly and moves the handpiece actuator (400) linearly.

[0102]

[0103] Meanwhile, a skin care device including a lightweight handpiece according to the present invention is described in more detail below by taking as an example an ultrasonic generator for skin that generates high intensity focused ultrasound (HIFU) with an ultrasonic generator (411) including an ultrasonic generator (411) as an example of a handpiece actuator (400) and a skin stimulation generator (410), and it is to be noted that the device may also be any one of other skin care devices, that is, a laser generator for skin, an RF energy generator for skin, a negative pressure generator, and a skin beauty device.

[0104] The cartridge housing part (110) is provided with a window part (110a) on the lower surface through which ultrasonic waves generated from the ultrasonic generator part (411) pass, and which is movable inside.

[0105] The window section (110a) is manufactured from a transparent or translucent film material, and a detailed description thereof is omitted as it is a known structure manufactured from a film material through which ultrasonic waves can pass.

[0106] The ultrasonic generator (411) is movably positioned in the cartridge housing (110) and is, for example, an ultrasonic transducer that generates high intensity focused ultrasound (HIFU).

[0107] As an example, the ultrasound generator (411) generates heat by irradiating high-intensity focused ultrasound (HIFU) to the skin muscle layer, thereby inducing degeneration and regeneration of skin tissue, thereby improving skin wrinkles and increasing skin elasticity.

[0108] The ultrasonic generator (411) is connected to the slider (521b) and moves linearly back and forth within the cartridge housing (110) together with the linear movement of the slider (521b).

[0109] The window section (110a) is formed to have a length longer than the movement range of the ultrasonic generator (411), so that ultrasonic waves generated from the ultrasonic generator (411) moving in a straight reciprocating manner can be stably transmitted.

[0110] The cartridge housing is filled with a liquid medium for transmitting ultrasonic waves.

[0111] The linear movement conversion unit (521) may further include a first jaw member (521d) having one end fixed to the inner surface of the cartridge housing unit (110) and the other end fixed to one end of the slider (521b) so that the slider (521b) is moved and folded and unfolded, and a screw member (521a) positioned inside, and a second jaw member (521e) having one end fixed to the inner surface of the cartridge housing unit (110) and one end fixed to the other end of the slider (521b) so that the slider (521b) is moved and folded and unfolded, and a screw member (521a) positioned inside.

[0112] The first Java member (521d) and the second Java member (521e) form a sealed space inside that is blocked from the liquid medium, thereby blocking the screw member (521a) located inside from the medium.

[0113] The first java member (521d) and the second java member (521e) prevent the liquid medium from leaking to the outside when the cartridge housing part (110) is separated from the handpiece body casing part (120) at the shaft coupling part of the screw member (521a), that is, at the shaft adapter part (530).

[0114] That is, the rotational force generated from the rotational motor unit (310) in the control body (200) is transmitted to the second pulley member (512) by the belt structure (513) passing through the connecting cable body (210), and the rotational force transmitted to the second pulley member (512) is transmitted to the screw member (521a) through the first bevel gear and the second bevel gear to rotate the screw member (521a).

[0115] When the screw member (521a) is rotated by receiving the rotational force generated from the rotational motor (310) in the control body (200), the slider (521b) moves back and forth in a straight line according to the rotational direction of the screw member (521a), and the ultrasonic generator (411) moves in a straight line together with the slider (521b) to irradiate ultrasonic waves to the skin.

[0116]

[0117] Meanwhile, FIG. 4 is an enlarged view of an embodiment of a connection cable body (210) in one embodiment of a skin care device including a lightweight handpiece according to the present invention, and referring to FIG. 4, a rotational power transmission unit (510) is fixed to the inside of the connection cable body (210) and further includes a belt movement guide tube unit (213) through which a belt structure (513) passes to guide movement of the belt structure (513).

[0118] The connecting cable body (210) is electrically connected to the skin stimulation generating unit (410) located in the handpiece main body casing unit (120) to supply electric power to the stimulation generating unit, and an operation control cable (212) for controlling the operation of the skin stimulation generating unit (410) and a belt structure (513) for transmitting the rotational force of the driving force generating unit (300) pass through the inside.

[0119] The belt movement guide tube section (213) is provided with a pair of belt structures (513) that pass through the connecting cable body (210) in two rows, and is fixedly positioned inside the connecting cable body (210) to support the position of the belt structure (513) passing through the inside, thereby minimizing the change in tension of the belt structure (513) when the connecting cable body (210) is bent, thereby enabling smooth movement of the belt structure (513) and stable transmission of power through the belt structure (513).

[0120] The belt structure (513) can stably transmit the rotational force of the first pulley member (511) to the second rotational pulley member by passing through the interior of a pair of belt movement guide tube parts (213) whose positions are fixed within the connecting cable body (210).

[0121] The connecting cable body (210) includes an operating control cable (212) passing through the inside and an outer skin (211) that surrounds a belt structure (513), and may further include an elastic filler (214) that is filled inside the outer skin (211) and supports the positions of the operating control cable (212) and the belt movement guide tube (213).

[0122] As an example, the filler (214) is a synthetic resin foam material such as polyethylene foam, and the filler (214) stably supports the position of the belt movement guide tube part (213) that guides the movement of the belt structure (513), so that when the connecting cable body (210) is bent, the movement of the belt structure (513) can be made smoother and power transmission through the belt structure (513) can be made more stable.

[0123]

[0124] The present invention can greatly improve the convenience and satisfaction of the operator during the procedure by reducing the weight of the handpiece (100) for skin treatment by mounting a driving force generating unit (300) that operates an operating body within the handpiece to the control body (200).

[0125] In addition, the present invention simplifies the structure of a handpiece (100) for skin treatment, so that the handpiece (100) for skin treatment can be designed without limitations on the size and shape, thereby greatly improving the degree of freedom in handpiece design.

[0126] While the present invention has been described in detail using preferred embodiments, the scope of the present invention is not limited to the specific embodiments described above, and should be interpreted in accordance with the appended claims. Furthermore, those skilled in the art will appreciate that numerous modifications and variations are possible without departing from the scope of the present invention.

Claims

1. Handpiece for skin treatment that comes into contact with the skin and causes irritation to the skin; A control body connected to the above skin treatment handpiece via a connection cable to control the operation of the above skin treatment handpiece; A driving force generating unit mounted inside the above control body and generating driving force; An actuator for the handpiece provided in the above skin treatment handpiece and operated by receiving driving force from the driving force generating unit; and A skin care device including a lightweight handpiece, characterized in that it includes a driving force transmission unit that transmits the driving force of the driving force generating unit to the handpiece actuator by passing through the inside of the connecting cable body.

2. In claim 1, The above driving force generating unit includes a rotary motor unit that generates rotary force, The above driving force transmission unit is, A skin care device including a lightweight handpiece, characterized by including a rotational power transmission unit that transmits the rotational power of the above-mentioned rotational motor unit to the actuator for the handpiece.

3. In claim 2, The above rotational power transmission unit is, A first pulley member rotatably positioned inside the control body and rotated by receiving rotational force from the rotational motor; A second pulley member rotatably positioned inside the handpiece for the skin treatment; and A skin care device including a lightweight handpiece, characterized in that it includes a belt structure in which one end is wound around the first pulley member and the other end is wound around the second pulley member.

4. In claim 3, The above belt structure is, A skin care device including a lightweight handpiece characterized by being one of a wire-type belt, a band-type belt, a V-belt, and a chain.

5. In claim 3, The above rotational power transmission unit is, A skin care device including a lightweight handpiece, characterized in that it further includes a belt movement guide tube portion that is fixed to the inside of the connecting cable body and supports the position of the belt structure through which the belt structure passes and moves.

6. In claim 5, The above connecting cable body is, An operating control cable passing through the inside and an outer skin wrapping the belt structure; and A skin care device including a lightweight handpiece, characterized in that it further includes an elastic filler that is filled inside the outer skin portion and supports the positions of the operating control cable and the belt movement guide tube portion.

7. In claim 2, The handpiece for the above skin treatment is, A cartridge housing section having a skin irritation generating section that stimulates the skin; and The above cartridge housing part includes a handpiece body casing part to which it can be detachably connected, The above driving force transmission unit is, A skin care device including a lightweight handpiece, characterized in that it further includes a cartridge driving unit positioned within the cartridge housing and receiving rotational power from the rotational power transmission unit to linearly or rotate the handpiece actuator.

8. In claim 7, A skin care device including a lightweight handpiece, characterized in that the operating shaft of the driving unit for the cartridge is detachably coupled to the operating shaft of the rotational power transmission unit.

9. In claim 7, The actuator for the above handpiece is, Including the skin stimulation generating unit located within the cartridge housing portion, The driving unit for the above cartridge is, A skin care device including a lightweight handpiece characterized by including a linear movement conversion unit that linearly moves the skin stimulation generating unit.

10. In claim 9, The above linear movement conversion part is, A screw member that is rotatably positioned within the casing portion of the handpiece body and rotates by receiving the rotational force of the second pulley member; and A skin care device including a lightweight handpiece characterized in that the screw member is penetrated and screw-connected, and includes a slider that moves linearly by rotation of the screw member and is connected to the skin stimulation generating unit.

11. In claim 10, The above linear movement conversion part is, A skin care device including a lightweight handpiece, characterized in that it further includes a movement guide pin member positioned to penetrate the slider and guide the linear movement of the slider.

12. In claim 10, The above rotational power transmission unit is, A skin care device including a lightweight handpiece, characterized in that it further includes a first rotation direction changing gear member and a second rotation direction changing gear member that change the rotation direction and transmit it to the screw member.

13. In claim 10, The above linear movement conversion part is, A first jaw member having one end fixed to the inner surface of the cartridge housing and the other end fixed to one end of the slider, folded and unfolded by the movement of the slider, and having the screw member positioned inside; and A skin care device including a lightweight handpiece characterized in that it further includes a second jaw member, wherein the other end side is fixed to the inner surface of the cartridge housing part, one end side is fixed to the other end side of the slider, and is folded and unfolded by the movement of the slider, and the screw member is positioned inside.

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