Hair removal machine

Abstract

The present invention is a hair removal device for removing hair from the body, comprising: a hair removal main body; an operating unit forming a part of the hair removal main body and removing hair by plucking it; a power transmission unit connected to the operating unit and transmitting power for operating the operating unit; a power supply unit connected to the power transmission unit and supplying power for driving the power transmission unit; and a controller provided in a part of the hair removal main body and connected to the power transmission unit and the power supply unit, respectively, to control the operation of the power transmission unit and the power supply unit.

Description

Technology Field

[0001] The present invention relates to a hair removal device capable of removing fine hairs or vellus hairs from the body. Background Technology

[0002] Recently, laser and Intensive Pulse Light (IPL) methods have been receiving significant attention as hair removal devices.

[0003] While the laser method can only utilize light of a specific wavelength range emitted from a specific medium, the optical pulse method emits light with a certain range of wavelengths in the form of periodic pulses for use in skin treatments or hair removal.

[0004] Pulsed light hair removal involves periodically irradiating the skin with light having wavelengths ranging from 515 to 1200 nm. When these periodic light pulses are applied to the skin, the light energy passes through the surface and concentrates on the hair roots, instantaneously generating high heat. This heat destroys only the hair follicles without damaging the surrounding skin, thereby achieving permanent hair removal. Currently, the wavelength range for efficient hair removal is estimated to be 700 to 1000 nm. In this type of pulsed light hair removal device, important variables during the procedure include skin color, light energy, wavelength range, pulse width, irradiation time, and pulse delay time; these must be appropriately coordinated according to the patient to maximize the treatment effect.

[0005] Meanwhile, an epilator is generally defined as a device used to remove body hair, such as hair or scalp hair, from the human skin. Traditional epilators include razors that cut body hair using blades, and threshing-type forced epilators that forcibly pull out hair to remove the roots.

[0006] However, the aforementioned traditional epilators forcibly remove body hair using physical methods; razors have limitations in achieving complete hair removal because they cannot eliminate the hair root and require continuous removal, while forced epilators are uncomfortable to use as they cause pain to the user during the process and have problems such as causing skin damage, including an increase in the size of hair follicles. Prior art literature

[0007] Republic of Korea Registered Patent No. 10-0801376 (February 5, 2008) The problem to be solved

[0008] Accordingly, the present invention has been devised to solve the above-mentioned problems, and the problem to be solved by the present invention is to provide a hair removal device equipped with a function that can remove fine hairs or downy hairs on the body without cutting them.

[0009] However, the technical problems to be solved by the present invention are not limited to those mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art to which the present invention belongs from the description below. means of solving the problem

[0010] The present invention was created to improve upon the problems of the prior art described above, and is a hair removal device for removing hair from the body, comprising: a hair removal main body; an operating unit forming a part of the hair removal main body and removing hair by plucking it; a power transmission unit connected to the operating unit and transmitting power for operating the operating unit; a power supply unit connected to the power transmission unit and supplying power for driving the power transmission unit; and a controller provided in a part of the hair removal main body and connected to the power transmission unit and the power supply unit, respectively, to control the operation of the power transmission unit and the power supply unit.

[0011] Additionally, in one embodiment, the operating unit may include: a housing formed with a portion of its side open; a hair removal spring that is received in the housing and removes hair by inserting it through relaxation and compressing it through contraction; a rotating shaft that is fixed while coupled to the hair removal spring and presses or relaxes the hair removal spring; and a fixed shaft that is respectively connected to both ends of the rotating shaft and the power transmission unit and transmits the rotational force of the power transmission unit to the rotating shaft.

[0012] Additionally, in one embodiment, the rotary shaft may include: a first coupling member providing a space to which a portion of the shaping spring is coupled; a second coupling member providing a space to which the remainder of the shaping spring is coupled corresponding to the first coupling member; a connecting member that extendably connects the first coupling member and the second coupling member at each end of the first coupling member and the second coupling member; and a pair of fixing members that prevent the shaping spring from detaching by forming a protruding circumference at each other end of the first coupling member and the second coupling member.

[0013] Additionally, in one embodiment, the fixed shaft may include: a pair of rotational force transmission members manufactured in a shape corresponding to the pair of fixed members and rotatably connected to the pair of fixed members; and a power transmission bar each connected to either of the pair of rotational force transmission members and the power transmission unit to transmit power from the power transmission unit to the rotational force transmission members.

[0014] In addition, in one embodiment, the pair of fixed members and the pair of rotational force transmission members may each have rounded surfaces formed to correspond to each other so that the parts touching each other rotate and interlock.

[0015] In addition, in one embodiment, it may further include a safety control unit installed in a part of the hair removal main body and controlling safety while monitoring the operation of the operating unit and the power transmission unit under the control of the controller.

[0016] Additionally, in one embodiment, the safety control unit may include: a pressure sensor for measuring pressure applied to the operating unit; a temperature sensor for measuring the temperature of the power transmission unit; a vibration sensor for measuring vibration generated in the power transmission unit; and an alarm member for notifying when the pressure, temperature, and vibration detected by each of the pressure sensor, the temperature sensor, and the vibration sensor exceed a preset standard. Effects of the invention

[0017] According to one embodiment of the present invention, a fixed shaft that receives power through a power transmission unit pushes or returns the rotating shaft to its original position, and by the relaxation or contraction of a hair removal spring coupled to the rotating shaft, the downy hair or fine hair can be compressed and pulled out to remove it, thereby minimizing damage to the skin.

[0018] In addition, according to one embodiment of the present invention, the fixed member of the rotating shaft and the rotational force transmission member of the fixed shaft each have a round shape corresponding to one another formed on their contact surfaces, so that the rotating shaft can be contracted and expanded by the rotation of the fixed shaft.

[0019] However, the effects obtainable from the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0020] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a perspective view of a hair removal device according to an embodiment of the present invention. Figure 2 is a control block diagram of the components of the controller. Figure 3 is a drawing illustrating the appearance of the operating unit and the power transmission unit. Figure 4 is a diagram illustrating the concepts of an operating unit and a power transmission unit. Figure 5 is a drawing illustrating the components of an operating unit. Figure 6 is a drawing illustrating the contraction of the operating unit. Figure 7 is a drawing illustrating the expansion and contraction of the operating unit. Specific details for implementing the invention

[0021] Below, with reference to the attached drawings, embodiments of the present invention are described in detail so that those skilled in the art can easily implement the invention. However, since the description of the present invention is merely an example for structural or functional explanation, the scope of the present invention should not be interpreted as being limited by the embodiments described in the text. That is, since the embodiments are subject to various modifications and may take various forms, the scope of the present invention should be understood to include equivalents capable of realizing the technical concept. Furthermore, the objectives or effects presented in the present invention do not imply that a specific embodiment must include all of them or only such effects; therefore, the scope of the present invention should not be understood as being limited by them.

[0022] The meaning of the terms described in this invention should be understood as follows.

[0023] Terms such as "first" and "second" are intended to distinguish one component from another, and the scope of rights shall not be limited by these terms. For example, the first component may be named the second component, and similarly, the second component may be named the first component. When a component is referred to as being "connected" to another component, it should be understood that it may be directly connected to that other component, or that there may be other components in between. Conversely, when a component is referred to as being "directly connected" to another component, it should be understood that there are no other components in between. Meanwhile, other expressions describing the relationship between components, such as "between" and "exactly between," or "adjacent to" and "directly adjacent to," shall be interpreted in the same manner.

[0024] A singular expression should be understood to include a plural expression unless the context clearly indicates otherwise, and terms such as "include" or "have" are intended to specify the existence of the set-up features, numbers, steps, actions, components, parts, or combinations thereof, and should be understood not to preclude the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0025] Unless otherwise defined, all terms used herein have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries should be interpreted as having meanings consistent with the context of the relevant technology and should not be interpreted as having an ideal or overly formal meaning unless explicitly defined in this invention.

[0026] FIG. 1 is a perspective view of a hair removal device according to an embodiment of the present invention, FIG. 2 is a control block diagram of the components of a controller, FIG. 3 is a drawing showing the appearance of an operating unit and a power transmission unit, FIG. 4 is a drawing showing the concept of an operating unit and a power transmission unit, FIG. 5 is a drawing showing the components of an operating unit, FIG. 6 is a drawing showing the operating unit contracting, and FIG. 7 is a drawing showing the operating unit expanding and contracting.

[0027] As illustrated in FIGS. 1 to 7, the present invention may include a hair removal device for removing hair from the body, a hair removal main body (100), an operating unit (200), a power transmission unit (300), a power supply unit (400), and a controller (500).

[0028] The operating unit (200) forms part of the hair removal main body (100) and can pull out and remove hair.

[0029] The operating unit (200) may include a housing (210), a spring (220), a rotating shaft (230), and a fixed shaft (240).

[0030] The housing (210) may be formed with a portion of its side open. Specifically, the housing (210) forming the outer shape of the operating unit (200) has one side open so that hair on the skin surface to be removed by the user can enter the unit. Inside the housing (210), a hair removal spring (220), which is the core mechanism for hair removal, is housed. This spring is formed by shaping a metal wire into a coil shape to have a certain elasticity and restoring force. When in use, hair is naturally caught in the relaxed state, and then the spring contracts to strongly compress the hair and pull it out from the root, thereby enabling hair removal.

[0031] The hair removal spring (220) is housed in the housing (210) and can remove hair by trapping it through relaxation and compressing it through contraction. Specifically, the hair removal spring (220) is manufactured using a material with high elasticity and fatigue resistance, such as medical-grade 316L stainless steel or a nickel-titanium alloy (Nitinol), rather than ordinary steel, and fine irregularities are imparted to the surface through high-precision laser processing or chemical etching processes to better trap hair. As a specific part of the hair removal spring (220) regularly bends and straightens, a force is generated to trap and pull the hair, and this mechanism enables gentle and effective hair removal by taking a multi-stage configuration in which the spring bends and straightens 23 times during one complete rotation cycle, for example.

[0032] The rotating shaft (230) is fixed by being coupled with the spring (220) and can press or release the spring (220).

[0033] The rotating shaft (230) may include a first connecting member (232), a second connecting member (234), a connecting member (236), and a fixing member (238).

[0034] The first connecting member (232) can provide a space to which a portion of the shaping spring (220) is connected. The second connecting member (234) can provide a space to which the remaining portion of the shaping spring (220) is connected in correspondence with the first connecting member (232). The connecting member (236) can extendably connect the first connecting member (232) and the second connecting member (234) at each end of the first connecting member (232) and the second connecting member (234). The fixing member (238) forms a pair and has a protruding circumference formed at each other end of the first connecting member (232) and the second connecting member (234) to prevent the shaping spring (220) from coming off.

[0035] Specifically, the first coupling member (232) is located at one end of the rotating shaft (230) and forms a space so that one end of the spring (220) can be inserted or wound and coupled thereto, and this space is structured to directly receive rotational torque while maintaining a fixed state without slipping as the spring (220) rotates.

[0036] The second connecting member (234), positioned opposite to this, provides a space of the same shape to which the opposite end of the shaping spring (220) is connected, and paired with the first connecting member (232), it supports the spring in a balanced manner from both sides while simultaneously facilitating the contraction and expansion deformation of the shaping spring (220) due to rotation. The first connecting member (232) and the second connecting member (234) are connected so as to be extendable within a certain distance from each other, and the connecting member (236) plays an important role in this process. This connecting member (236) is generally composed of an elastic body (e.g., a rubber connector or a metal sleeve spring) or a mechanical slider with a telescopic structure, which absorbs the axial movement or vibration of the shaping spring (220) that occurs during rotation and enables the adjustment of the compressive force of the shaping spring (220) and feedback operation through the adjustment of the gap between the first connecting member (232) and the second connecting member (234).

[0037] That is, the connecting member (236) rotates according to the thickness of the hair or skin resistance of the area to be removed, and moves elastically to adjust the degree of opening and closing of the hair removal spring (220), thereby enabling more precise hair removal operation. Since this connecting member (236) must move freely within a certain range in the direction of the rotation axis while providing sufficient rigidity against torsional loads, rotational stability can be ensured through a guide pin or reinforcing ring structure embedded inside the central axis.

[0038] Additionally, a fixing member (238) is formed at each other end of the first connecting member (232) and the second connecting member (234). This fixing member (238) is configured in the form of a ring or flange protruding outward along the circumference of the rotation axis, thereby providing a physical locking device to prevent both ends of the shaping spring (220) from coming out of the axis, and can securely fix the shaping spring (220) so that it does not come out of place even during rotation or vibration. In particular, this fixing member (238) prevents the end of the shaping spring (220) from coming off the rotation axis due to centrifugal force or tension received during rotation, while maintaining contact pressure between the spring and the connecting member to increase friction-based drive transmission efficiency, and at the same time structurally guarantees safety so that the shaping spring (220) does not easily come loose even during long-term use.

[0039] The operation method is as follows. When a user operates the hair removal device (10), the power transmission unit (300) is driven through the power supply unit (400), and as a result, the rotating shaft (230) rotates at a constant rotational speed. This rotational force is transmitted to the first connecting member (232) and the second connecting member (234), causing the hair removal spring (220) connected on both sides to rotate in the same direction or the opposite direction. At this time, the hair removal spring (220) contracts towards the center due to its own elastic force and catches the hair. Depending on the structure of the rotation axis, the hair removal spring (220) periodically relaxes and compresses the caught hair to repeat the action of pulling it out of the skin. This contraction and relaxation operation can be performed flexibly through the elasticity of the connecting member (236) and timing adjustment between rotation cycles.

[0040] At the moment the hair removal spring (220) catches the hair, a slight axial reaction force is generated depending on the resistance of the hair. This force is absorbed through the connecting member (236) to maintain the mechanical stability of the entire rotating shaft (230) and suppress unnecessary vibrations. With the hair removal spring (220) mounted, the fixing member (238) firmly fixes the end of the hair removal spring (220) so that it does not deviate in any direction. This ensures that the spring remains within the rotation axis even with sudden changes in rotational force or external impacts during rotation, and thus the user can stably press the hair removal device (10) against the skin to perform continuous hair removal.

[0041] In addition, the entire rotating shaft (230) is designed with a modular structure, so maintenance is easy when replacing the hair removal spring (220) by separating the first and second connecting members (232, 234), inserting a new hair removal spring (220), and reassembling them. The connecting member (236) and the fixing member (238) may be made of a highly durable material so that there is minimal deformation or wear even with repeated assembly and disassembly. In the advanced model, a rotation sensor is attached inside the shaft to monitor the rotation angle, speed, and torque of the hair removal spring (220) in real time, and it is linked with a smart control system that automatically adjusts the rotation speed and spring tension based on this data, thereby providing a customized hair removal environment for the user.

[0042] The fixed shaft (240) is connected to both ends of the rotating shaft (230) and to the power transmission unit (300), respectively, so that the rotational force of the power transmission unit (300) can be transmitted to the rotating shaft (230).

[0043] The fixed shaft (240) may include a rotational force transmission member (242) and a power transmission bar (244).

[0044] The rotational force transmission member (242) forms a pair and is manufactured in a shape corresponding to a pair of fixed members (238) so that it can be rotatably connected to a pair of fixed members (238). Specifically, the pair of rotational force transmission members (242) are each positioned corresponding to a position that matches the first coupling member (232) and the second coupling member (234) of the rotation shaft (230), and are designed in a shape corresponding to the fixed member (238) so that they can be maintained in a rotatable state while being mechanically coupled. That is, the rotational force transmission member (242) is formed in the shape of a circular disc or a cup-shaped cap structure, and its inner surface is fixed by engaging with the protrusion of the fixed member (238), but can be configured by applying a bearing or a low-friction material so that it can rotate freely in a coaxial manner.

[0045] Through this structure, the fixed member (238) can maintain a fixed state while the rotational power transmission member (242) can stably transmit rotational power to the rotation shaft (230). At this time, an insertable shaft or a key-slot method is applied to the center of the rotational power transmission member (242) so that rotational power can be directly transmitted without slip. A power transmission bar (244) is connected to one of the rotational power transmission members (242), typically the one located closer to the power transmission unit (300). This power transmission bar (244) is a rod-shaped member formed in the longitudinal direction, and one end can be connected to the central axis of the rotational power transmission member (242), and the other end can be connected to the rotation axis or gearbox of the power transmission unit (300).

[0046] The power transmission bar (244) is connected to either one of a pair of rotational force transmission members (242) and the power transmission unit (300), respectively, so that the power of the power transmission unit (300) can be transmitted to the rotational force transmission member (242). Specifically, the power transmission bar (244) is made of a metal material (e.g., steel alloy, titanium alloy, etc.) that has high rigidity and excellent fatigue resistance, as twisting and bending may occur repeatedly depending on the direction of rotation and torque, and at the same time, it may be designed as a multi-stage structure including a coupling or damper in the middle for vibration absorption or shock mitigation.

[0047] The operation method is initiated by the user activating the power switch of the hair removal device (10). When the motor of the power transmission unit (300), which receives current from the power supply unit (400), is driven, rotational force is generated at the rotation shaft. This rotational force is transmitted from the motor output shaft to the power transmission bar (244). The power transmission bar (244) transmits rotational force to the fixed shaft (240) while maintaining rotational motion. At this time, since the end of the power transmission bar (244) is firmly connected to the rotational force transmission member (242), the rotational force is directly transferred to the rotational force transmission member (242).

[0048] Since the rotational force transmission member (242) is fixed to the fixed shaft (240) and is engaged with the fixed member (238) of the rotating shaft (230), the transmitted rotational force is uniformly transmitted through the fixed member (238) to the first coupling member (232) and the second coupling member (234) of the rotating shaft (230), and as a result, the rotating shaft (230) performs concentric rotation. In this way, the structure of the fixed shaft (240) goes beyond simply transmitting rotational force and performs complex functions such as balanced transmission of rotational force, vibration absorption, and rotational stabilization. To this end, the rotational force transmission member (242) has a more separate structure than a general integrated type, and the allowable tolerance and straightness of the shaft must be precisely maintained during the assembly process. It can also be mounted together with a precision bearing or sleeve to prevent shaft run-out from occurring during rotation.

[0049] The most important aspect of designing a rotary shaft system is minimizing rotational force loss and ensuring rotational precision. To achieve this, a friction-reducing coating (e.g., Teflon or ceramic coating) may be applied to the joint surface of the rotary force transmission member (242) and the fixed member (238), or a lubrication system may be added. Additionally, a torque limiter or flexible coupler that provides a certain level of torsional cushioning may be installed to prevent shear or fatigue failure of the power transmission bar (244). As a result, the rotary force transmission system can supply a constant and uniform torque to the rotary shaft (230) while maintaining structural stability even under external shocks or overload conditions.

[0050] When the rotational force increases above a certain level during operation, a safety device or rotation limiting rib that prevents the rotational force transmission member (242) from over-rotating may be embedded in the fixed member (238), and this design can increase the safety and lifespan of the device by preventing excessive load from being applied to the hair removal spring (220) or the skin during use of the hair removal device (10). The power transmission bar (244) is also manufactured in a modular form for maintenance purposes, so that when a failure occurs, only a part of the fixed shaft (240) can be separated for maintenance without replacing the entire rotational shaft, and the connection part with the rotational force transmission member (242) is designed in various forms such as a hexagonal bolt, a key fixing method, or a quick-lock connector, thereby providing excellent efficiency in terms of maintainability and ease of manufacturing.

[0051] A pair of fixed members (238) and a pair of rotational force transmission members (242) may each have rounded surfaces formed to correspond to each other so that the parts touching each other interlock as they rotate. Specifically, a pair of fixed members (238) and a pair of rotational force transmission members (242) are formed to correspond to each other with rounded surfaces so that their respective external structures can maintain a constant interlocking state even during rotation. This curved surface corresponding structure operates as a mechanical design basis to maximize the alignment precision between rotating bodies along with stable transmission of rotational force, and the operating principle is to efficiently transmit rotational force without loss to the rotating shaft (230), which is the core rotating part of the hair removal device (10), and at the same time mitigate vibrations, eccentricity, shocks, etc. that may occur during rotation.

[0052] The fixed member (238) is formed on the outer sides of both ends of the rotating shaft (230) and generally has a circular or elliptical cross-section, but is manufactured in a round shape with an outer surface having a constant radius of curvature, and this curved surface is machined into a hemispherical, conical, or parabolic shape. On the other hand, the inner surface of the rotational force transmission member (242) positioned corresponding to the fixed member (238) is also machined into a round surface having the same curvature, and by forming a structure in which the two components are precisely in contact when combined, a constant contact area can be maintained without slippage or play even during rotation.

[0053] The most significant feature of this round surface structure is that even if slight misalignment or axial positional change occurs while the rotation axis is driven, the contact surface can always maintain a constant pressure and contact angle, thereby enabling uniform torque transmission between rotating bodies even during rotational force transmission. In actual operation, when the power transmission unit (300) is operated, rotational force is applied to one of the rotational force transmission members (242) through the power transmission bar (244), and as this rotational force transmission member (242) rotates, it makes tight contact with the outer surface of the fixed member (238) without slipping along the inner round surface, and as a result, the rotational force can be effectively transmitted to the fixed member (238) and then to the rotation shaft (230).

[0054] The curvature design of the round surface affects not only the direction of propagation of rotational force but also the distribution of contact pressure. Ideal contact is designed to be a line or surface contact distributed along the curved surface rather than a point, which plays a key role in reducing contact wear occurring during rotation and ensuring rotational stability. For example, if the outer surface of the fixed member (238) forms a concave curved surface and the inner surface of the rotational force transmission member (242) forms a convex curved surface, the two components contact along a certain line and maintain their center without shaking during rotation. In this process, friction on the contact surface is minimized and rotational efficiency can be maximized.

[0055] This structure is particularly suitable for the repetitive and high-speed rotational motion of the hair removal device (10) and is advantageous for stabilizing the entire rotational system even with rotational imbalance or abnormal resistance of the hair removal spring (220). Furthermore, this round surface includes not only simple rotational transmission but also a self-alignment function on the friction surface, which allows the rotational force transmission member (242) to perform a slight position correction function during rotation, thereby reducing device wear caused by misalignment between rotating bodies and ensuring a long lifespan.

[0056] In addition, a wear-resistant coating (e.g., DLC, PTFE, ceramic, etc.) may be applied to this round surface, which can reduce the coefficient of friction at the contact surface and suppress the generation of rotational noise and frictional heat, thereby reducing the overall operating noise and deterioration of the device. The round surface interlocking structure serves as an essential element to provide a smooth operating feel while maintaining high rotational precision without torque loss, especially in small and precise devices such as the hair removal device (10), and allows the same rotational efficiency and tactile feel to be maintained even when the user uses the hair removal device (10) at various angles or directions.

[0057] As such, the rounded face interlocking structure is designed to prevent unnecessary play or impact at the contact surface between rotating bodies. Since the curvature of each component must be precisely machined to match, it is generally manufactured using high-precision CNC machines or multi-axis grinders, and alignment can be verified through contact and fitting tests during the pre-assembly stage. Furthermore, if this rounded face structure becomes contaminated or worn during use, gaps may occur during rotation, potentially increasing vibration and noise; therefore, a sealing cover to block dust ingress or a fine lubricant may be added to the contact surface. In some high-end models, a system that detects the rotational alignment status in real time via magnetic connection methods or magnetic sensors is integrated to maintain the contact quality of the rounded faces.

[0058] The power transmission unit (300) is connected to the operating unit (200) and can transmit power for the operation of the operating unit (200). Specifically, the power transmission unit (300) efficiently supplies the force required for the operation of the mowing spring (220). Generally, a small DC motor is used, but a high-precision reduction gearbox (e.g., a 30:1 reduction ratio) is used in conjunction to convert the rotation of the high-speed motor into low-speed, high-torque. The gearbox output shaft is directly connected to a small cam or eccentric gear. Occasionally, a belt drive (e.g., a polyurethane belt) may be added for structural optimization to simultaneously perform shock absorption and noise reduction functions. The power transmission unit (300) is linked with a PWM control circuit to control the mowing cycle. The user can select a spring contraction / extension cycle of 26 times per second according to the set speed, and a low-friction bearing (e.g., a miniature ball bearing) may be placed at the shaft support point to reduce power loss.

[0059] The power supply unit (400) is connected to the power transmission unit (300) and can supply power for driving the power transmission unit (300). Specifically, the power supply unit (400) serves to supply energy to the power transmission unit (300). Lithium-ion rechargeable batteries are mainly used, and 3.7V 2000mAh is typical. The battery has a built-in PCB (circuit protection module) to prevent overcharging, over-discharging, and overcurrent, and enables charging via a USB-C port.

[0060] The controller (500) is provided in a part of the hair removal main body (100) and is connected to the power transmission unit (300) and the power supply unit (400), respectively, so as to control the operation of the power transmission unit (300) and the power supply unit (400).

[0061] A hair removal device according to one embodiment of the present invention may further include a safety control unit (600).

[0062] The safety control unit (600) is installed in a part of the hair removal main body (100) and can control safety while monitoring the operation of the operating unit (200) and the power transmission unit (300) under the control of the controller (500).

[0063] The safety control unit (600) may include a pressure sensor (610), a temperature sensor (620), a vibration sensor (630), and an alarm member (640).

[0064] The pressure sensor (610) can measure the pressure applied to the operating unit (200).

[0065] The temperature sensor (620) can measure the temperature of the power transmission unit (300).

[0066] The vibration sensor (630) can measure vibrations generated in the power transmission unit (300).

[0067] The alarm unit (640) can notify when the pressure, temperature, and vibration detected by each of the pressure sensor (610), temperature sensor (620), and vibration sensor (630) exceed a preset standard.

[0068] Specifically, the safety control unit (600) is composed of a complex sensor and control system that protects the user's skin and prevents malfunction of the device, and the pressure sensor (610) detects when the skin is in excessive contact with the device using, for example, a MEMS-based strain gauge, and at this time reduces the contraction strength of the spring (220) or temporarily stops the motor, and the temperature sensor (620) has a protection logic that continuously monitors the temperature near the motor or spring (220) and switches to UV sterilization mode with a warning if it overheats to 55 degrees or higher, and additionally, an acceleration sensor can be attached to provide an emergency cutoff function when detecting a product drop or severe vibration.

[0069] A hair removal device according to one embodiment of the present invention may further include a vibration prevention pad (not shown) installed in an operating unit (200) or a power transmission unit (300) to prevent vibrations occurring during the operation of the operating unit (200) or the power transmission unit (300).

[0070] In addition, the hair removal device according to one embodiment of the present invention is a device for hygienically managing the hair removal spring (220) and the hair removal area, and a snap-fit ​​type cover that can be quickly attached and detached is installed around the hair removal spring (220) so that it can be easily separated and cleaned, and the cover and main exposed parts are made of antibacterial treated ABS or antibacterial silicone material, and hair residue and dust can be removed with a separately provided fine bristle brush, and a sterilization function using UV LED is applied so that it can be set to automatically undergo a sterilization process for 510 minutes after use.

[0071] In addition, the hair removal device according to one embodiment of the present invention is designed such that the hair removal main body (100) is responsible for user convenience and an external design that minimizes fatigue during use, the exterior is made by applying a silicone coating layer that provides a soft touch to ABS plastic with excellent impact resistance and durability, the center of gravity is designed to be slightly tilted toward the palm so as not to strain the wrist during long-term use, and the handle has an anti-slip pattern with an ergonomic curvature so that it can be easily gripped even with wet hands.

[0072] In addition, the hair removal device according to one embodiment of the present invention may include a massage function, an LED light, and a cooling function for the hair removal area. The massage function is equipped with a separate vibration motor to reduce pain caused by hair pulling, the LED light helps to make fine hairs easier to see, and the cooling function can minimize skin irritation immediately after hair removal.

[0073] As described above, the detailed description of the preferred embodiments of the present invention disclosed is provided to enable those skilled in the art to implement and practice the present invention. Although the present invention has been described with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the invention. For example, those skilled in the art may utilize each configuration described in the embodiments described above in combination with one another. Accordingly, the present invention is not intended to be limited to the embodiments shown herein, but to be given the broadest scope consistent with the principles and novel features disclosed herein.

[0074] The present invention may be embodied in other specific forms without departing from the spirit and essential features of the invention. Accordingly, the above detailed description should not be interpreted restrictively in all respects but should be considered exemplary. The scope of the invention shall be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention are included within the scope of the invention. The invention is not intended to be limited to the embodiments shown herein, but to be given the broadest possible scope consistent with the principles and novel features disclosed herein. Furthermore, embodiments may be constructed by combining claims that are not explicitly related in the claims, or by including them as new claims through amendments made after filing. Explanation of the symbols

[0075] 10 : Hair removal device 100 : Hair removal main body 200 : Operating unit 210 : Housing 220 : Zemo spring 230 : Rotary shaft 232 : First connecting member 234 : Second connecting member 236 : Connecting member 238 : Fixing member 240 : Fixed shaft 242 : Rotational force transmission member 244 : Power transmission bar 300 : Power transmission unit 400 : Power supply unit 500 : Controller 600 : Safety control unit 610: Pressure sensor 620 : Temperature sensor 630 : Vibration sensor 640 : No alarm

Claims

Claim 1 A hair removal device for removing body hair, comprising: a hair removal main body; an operating unit forming a part of the hair removal main body and removing hair by plucking it; a power transmission unit connected to the operating unit and transmitting power for the operation of the operating unit; a power supply unit connected to the power transmission unit and supplying power for driving the power transmission unit; and a controller provided in a part of the hair removal main body and connected to the power transmission unit and the power supply unit, respectively, to control the operation of the power transmission unit and the power supply unit; wherein the operating unit comprises: a housing formed with a part of its side open; a hair removal spring accommodated in the housing, into which hair is caught through relaxation and which removes hair by compressing the hair through contraction; and a rotating shaft that is fixed while coupled to the hair removal spring and pressurizes or relaxes the hair removal spring. A hair removal device characterized by including: a fixed shaft that is respectively connected to both ends of the rotating shaft and the power transmission unit and transmits the rotational force of the power transmission unit to the rotating shaft. Claim 2 delete Claim 3 A hair removal device according to claim 1, wherein the rotating shaft comprises: a first coupling member providing a space to which a portion of the hair removal spring is coupled; a second coupling member providing a space to which the remainder of the hair removal spring is coupled corresponding to the first coupling member; a connecting member that extendably connects the first coupling member and the second coupling member at each end of the first coupling member and the second coupling member; and a pair of fixing members having a protruding circumference formed at each other end of the first coupling member and the second coupling member to prevent the hair removal spring from detaching. Claim 4 A hair removal device according to claim 3, wherein the fixed shaft comprises: a pair of rotational force transmission members manufactured in a shape corresponding to the pair of fixed members and rotatably connected to the pair of fixed members; and a power transmission bar each connected to either of the pair of rotational force transmission members and the power transmission unit to transmit power from the power transmission unit to the rotational force transmission members. Claim 5 A hair removal device according to claim 4, characterized in that the pair of fixed members and the pair of rotational force transmission members each have rounded surfaces formed to correspond to each other so that the parts touching each other rotate and interlock. Claim 6 A hair removal device according to claim 1, further comprising a safety control unit installed in a part of the hair removal main body and controlling safety while monitoring the operation of the operating unit and the power transmission unit under the control of the controller. Claim 7 A hair removal device according to claim 6, wherein the safety control unit comprises: a pressure sensor for measuring pressure applied to the operating unit; a temperature sensor for measuring the temperature of the power transmission unit; a vibration sensor for measuring vibration generated in the power transmission unit; and an alarm member for notifying when the pressure, temperature, and vibration detected by each of the pressure sensor, the temperature sensor, and the vibration sensor exceed a preset standard.

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