Body care apparatus

Abstract

A body care device is disclosed. The body care device includes a seat frame, a body frame, and a seat actuator. A plurality of rollers are rotatably coupled to the seat frame. The body frame may include a travel surface on which the rollers travel in a front-rear direction. The seat actuator is disposed at the body frame to move the seat frame in the front-rear direction. The travel surface forms a curved surface with different heights in the front-rear direction.

Description

Technical Field

[0001] This invention relates to a body care device, and more specifically, to a body care device that provides massage by physically stimulating the body of a seated user. Prior Technology

[0002] With the aging of society in recent years, people of all ages are becoming increasingly aware of health, health maintenance, and health promotion. As a result, many people are using institutions such as medical facilities or sports clubs to manage, maintain, or improve their health.

[0003] In addition to maintaining or improving health and physical fitness, many people also seek to relieve fatigue and stress. To this end, various body care devices have been developed, such as massage devices, which are widely used in real life.

[0004] Massage is a complementary medical therapy that involves using hands or specialized devices to stroking, kneading, pressing, pulling, tapping, or moving the body to improve blood circulation and relieve fatigue. Devices that perform massage through mechanical means are called massage apparatus, and various mechanical elements are used in massage apparatus to achieve effective massage.

[0005] Among them, massage chairs are electric chairs that massage the body on a chair structure, allowing users to sit on them. In recent years, they have gained increasing attention not only among middle-aged and elderly people, but also among office workers suffering from chronic fatigue and stress, and young women who are concerned about beauty and weight loss (diet).

[0006] Korean Patent No. 2394632 (hereinafter referred to as "Prior Art Document 1") discloses a "massage chair with stretch functions", wherein the massage chair includes an upper body, a seat and legs.

[0007] The upper body supports the user's back. The seat is hinged to the lower side of the upper body to support the user's hips. The leg rest is hinged to the seat and supports or holds the user's legs. The upper body is rotatably coupled to the support frame via a hinge axis and rotates backward about the hinge axis by the driving force of the main actuator to form a reverse posture, a chair posture, and a horizontal posture.

[0008] According to previous technical document 1, the massage chair's legs can extend, while the upper body can recline to allow the user to lie down; however, this requires a significant amount of space behind the massage chair to allow the upper body to recline. Furthermore, in the chair posture, the seat is flush with the floor rather than slightly reclined, which reduces comfort.

[0009] Regarding the tilting function, Korean Patent No. 2675183 (hereinafter referred to as "Prior Art Document 2") discloses a "recliner sofa using a combination of steel frames", wherein the recliner sofa includes a seat, an upper body support, a leg support, a mechanism operating part, and a lower steel frame.

[0010] The seat supports the user's hips and thighs. The upper body support supports the user's back and head. The leg support supports the user's calves. The operating mechanism adjusts the tilt of the seat, upper body support, and leg support. The lower steel frame supports the operating mechanism. The lower steel frame includes multiple support legs.

[0011] According to previous technical document 2, the leg support extends and the upper body support tilts via a mechanism, allowing the user to assume a comfortable posture. However, the upper body support protrudes towards the back of the sofa when tilted. Furthermore, because the upper body support does not tilt 180 degrees, the user can lean back but cannot fully recline. Summary of the Invention

[0012] One aspect of the present invention addresses the aforementioned problems with a body care device that provides care for the body of a seated user.

[0013] Another aspect of the present invention is to provide a body care device that, by means of an optimized tilting structure, can tilt with or without free space behind the backrest.

[0014] Another aspect of the present invention is to provide a body care device that can tilt up to 180° by means of an optimized operating structure of the seat and backrest.

[0015] Another aspect of the present invention is to provide a body care device that can smoothly change the angle of the seat when the tilt function is used, and provide the user with a comfortable sitting experience.

[0016] The present invention is not limited to the forms mentioned above, and other technical forms not mentioned above will be clearly understood by those skilled in the art based on the following description.

[0017] The body care device according to the present invention includes: a seat frame, a body frame, and a seat actuator.

[0018] Multiple rollers can be rotatably coupled to the base.

[0019] The main frame may include a travel surface, on which rollers travel in the front-to-back direction.

[0020] The seat actuator can be located at the body frame to move the seat frame in the front-to-back direction.

[0021] The running surface can form curved surfaces with different heights in the front and rear directions.

[0022] The running surface can form an upward convex surface in the front-to-back direction.

[0023] The peak point of the walking surface can be located between the front and rear ends of the walking surface.

[0024] The peak point of the walking surface can be closer to the front of the walking surface than the rear end of the walking surface.

[0025] The roller may include a first roller and a second roller. The second roller may rest on the running surface behind the first roller.

[0026] The traveling surface may include a first traveling surface and a second traveling surface.

[0027] The first and second travel surfaces can be spaced apart from each other in the left-right direction. Each of the rollers can rest on the first and second travel surfaces.

[0028] The guide plate can be coupled to the roller. The guide plate can have a larger radius than the roller.

[0029] The frame may include guide surfaces.

[0030] The guide surface can be shaped to curve downwards from the travel surface. The guide surface can face one surface of the guide plate in the left-right direction.

[0031] The seat driver can be rotatably coupled to a first point of the body frame and a second point of the seat frame.

[0032] The seat actuator may include a linear actuator configured to extend and retract between a first point and a second point.

[0033] The body care device according to the present invention may include: a backrest frame and a backrest drive.

[0034] The backrest frame can be coupled to the seat frame so that it can rotate about the frame axis, allowing the backrest frame to be raised or tilted.

[0035] The backrest drive can be located at the seat frame to allow the backrest frame to rotate about the frame axis.

[0036] The body care device according to the present invention may include a controller.

[0037] The controller can simultaneously control the seat drive and the backrest drive, so that the backrest tilts when the seat moves forward and rises when the seat moves backward.

[0038] The backrest drive can be rotatably coupled to a first point of the seat frame and a second point of the backrest frame.

[0039] The backrest drive may include a linear actuator configured to extend and retract between a first point and a second point.

[0040] The frame may be equipped with multiple movable components.

[0041] The main frame can form a movable section, in which the movable components move in the front-to-back direction.

[0042] The seat actuator can be located at the body frame to move the seat frame in the front-to-back direction.

[0043] The moving segment can form a curved shape whose height varies in the front-to-back direction.

[0044] The rear endpoint of the moving segment can be lower than the front endpoint of the moving segment.

[0045] The peak point of a moving segment can be located between the front and rear endpoints of the moving segment. The peak point of a moving segment can be closer to the front endpoint of the moving segment than the rear endpoint.

[0046] The body care device according to the present invention may include a seat cover.

[0047] The seat cover can be coupled to the seat frame. The seat cover can form a resting surface for the buttocks.

[0048] When the moving component moves from the rear end point of the moving segment to the front end point, the angle between the hip resting surface and the horizontal plane can be reduced.

[0049] According to an embodiment of the body care device of the present invention, the guide can form a moving segment in which a moving member moves in a front-to-back direction. The moving segment can refer to the path or space in which the first roller and the second roller move. A controller can control a seat drive to change the posture of the seat from a first posture to a second posture and from the second posture to the first posture. When the second roller is located at the rear end of the moving segment, the seat can be in the first posture. The first posture can refer to an upright position with the backrest facing up. In the first posture, the user can sit on the body care device. In the first posture, the user can receive body care. When the first roller is located at the front end of the moving segment, the seat can be in the second posture. The second posture can refer to a flat position with the backrest facing down. In the second posture, the user can lie on the body care device. In the second posture, the user can receive body care.

[0050] According to an embodiment of the body care device of the present invention, the base can support the load of the seat and backrest via the walking surface. The load of the seat and backrest can be applied to the walking surface via a first roller and a second roller. Therefore, the first roller and the second roller can remain resting on the walking surface.

[0051] According to the body care device of the present invention, the seat actuator can push the seat frame forward or pull the seat frame backward. At this time, the first roller and the second roller can travel along the travel surface in the front-back direction on the left and right sides of the main body frame. Therefore, the seat portion can travel in the front-back direction. At this time, the guide surface can face one side of the guide plate on the left and right sides of the main body frame with a small gap in the left-right direction. Therefore, when the first roller and the second roller travel along the travel surface in the front-back direction on the left and right sides of the main body frame, the first roller and the second roller can be prevented from moving in the left-right direction. Therefore, the left-right movement and rotation of the seat portion can be prevented.

[0052] According to an embodiment of the body care device of the present invention, the guide may include an upper traveling surface. The upper traveling surface may form the upper surface of the moving section. The traveling surface may form the lower surface of the moving section. The rollers may be spaced apart from the upper traveling surface while resting on the traveling surface. Therefore, even if the user sitting on the seat moves their body or an external force is applied to the seat, the vertical movement of the first roller and the second roller can be prevented. Thus, vertical movement and rotation of the seat can be prevented.

[0053] According to an embodiment of the body care device of the present invention, in a first posture of the seat, the second roller can be positioned lower than the first roller. Therefore, based on the central axis of the first roller, in the first posture, the axial connecting line can form an angle of less than 0° with the Y-axis. In the first posture, the user can sit on the body care device. In the first posture, the user can receive body care. The axial connecting line can be parallel to the buttocks rest surface. Therefore, in the first posture, the buttocks rest surface can form an angle of less than 0° (e.g., -7°) with the Y-axis. Therefore, the buttocks rest surface can form a backward downhill slope. Therefore, in the first posture, the weight of the user sitting on the seat can be distributed across the seat and backrest, rather than concentrated on the seat. In the first posture, this provides a comfortable sitting experience for the user sitting on the seat.

[0054] According to the body care device of the present invention, the moving section can be formed into a curved shape with a height varying in the front-back direction. The traveling surface can be formed into a curved surface with a different height in the front-back direction. Therefore, when the posture of the seat changes from a first posture to a second posture and from the second posture to the first posture, the first roller and the second roller can travel along the curved surface, thereby smoothly changing the angle of the buttocks resting surface. Therefore, a comfortable sitting experience can be provided for the user sitting on the seat.

[0055] According to the body care device of the present invention, the walking surface can be formed with an upwardly convex surface in the front-back direction. Therefore, when the moving member moves from the rear end point to the front end point of the moving segment S, the angle between the buttocks resting surface and the horizontal plane can be reduced. Conversely, when the moving member moves from the front end point to the rear end point of the moving segment, the angle between the buttocks resting surface and the horizontal plane can be increased. That is, when the posture of the seat changes from a first posture to a second posture and from a second posture to a first posture, the first roller and the second roller can travel along the curved surface, thereby allowing the buttocks resting surface to rotate smoothly to both sides. This provides a comfortable sitting experience for the user sitting on the seat.

[0056] According to the body care device of the present invention, the walking surface can be formed with a constant curvature in the front-to-back direction. Therefore, the moving speed and rotational speed of the seat can be proportional to each other. Thus, when the posture of the seat changes from a first posture to a second posture and from a second posture to a first posture, the first roller and the second roller can travel along the curved surface at a constant speed, thereby allowing the buttocks resting surface to rotate smoothly at a constant angular velocity. Therefore, a comfortable sitting experience can be provided for the user sitting on the seat.

[0057] According to the body care device of the present invention, the peak point of the moving segment can be located between the front and rear ends of the moving segment. The peak point of the traveling surface can be located between the front and rear ends of the traveling surface. Therefore, the first roller can be located before the peak point of the traveling surface (moving segment), and the second roller can be located after the peak point of the traveling surface (moving segment). At this time, the central axis of the first roller and the central axis of the second roller can form the same height, and the axial connecting line can form an angle of 0° with the Y-axis. At this time, the seat can form a second posture. Therefore, when the posture of the seat changes from the first posture to the second posture and from the second posture to the first posture, the angle between the buttocks resting surface and the Y-axis can smoothly rotate between less than 0° (e.g., -7°) and 0°. This provides a comfortable sitting experience for the user sitting on the seat.

[0058] According to the body care device of the present invention, the peak point of the moving segment can be closer to the front end point of the moving segment than the rear end point of the moving segment. The peak point of the traveling surface can be closer to the front end point of the traveling surface than the rear end point of the traveling surface. Therefore, when the second roller moves to the rear end point of the moving segment, the axial connecting line can form an angle of less than 0° with the Y-axis. When the first roller moves to the front end point of the moving segment, the axial connecting line can form an angle of 0° with the Y-axis. Therefore, the length of the moving segment (traveling surface) in the front-rear direction can be minimized. Therefore, the length of the guide in the front-rear direction can be minimized.

[0059] According to the body care device of the present invention, the rear end point of the moving segment can be lower than the front end point of the moving segment. Therefore, even if the traveling surface is formed with a constant curvature, the peak point of the moving segment can still be closer to the front end point of the moving segment than the rear end point. Therefore, even if the traveling surface is formed with a constant curvature, when the second roller moves to the rear end point of the moving segment, the axial connecting line can still form an angle of less than 0° with the Y-axis. When the first roller moves to the front end point of the moving segment, the axial connecting line CL can form an angle of 0° with the Y-axis. Therefore, even if the traveling surface is formed with a constant curvature, the length of the guide in the front-rear direction can be minimized.

[0060] According to the body care device of the present invention, the controller can simultaneously control the seat drive and the backrest drive, such that the posture of each of the seat and the backrest changes from a first posture to a second posture and from the second posture to the first posture. The controller can simultaneously control the seat drive and the backrest drive, such that the backrest tilts when the seat frame moves forward and rises when the seat frame moves backward.

[0061] According to an embodiment of the body care device of the present invention, in a first posture, the buttocks rest surface can form a rearward downward slope, while the second rest surface can tilt backward. In the first posture, the user can sit on the body care device. In the first posture, the user can receive body care. In the first posture, the angle between the buttocks rest surface and the second rest surface can be slightly greater than 90°. Therefore, in the first posture, the weight of the user sitting on the seat can be distributed across the seat and backrest, rather than concentrated on the seat. In the first posture, this provides a comfortable sitting experience for the user sitting on the seat.

[0062] According to the body care device of the present invention, in the second posture, the second support surface of the backrest can form a 0° angle with the Y-axis. In the second posture, the buttock support surface can form a 0° angle with the Y-axis. Therefore, in the second posture, the buttock support surface and the second support surface can form a 0° angle with the Y-axis. In the second posture, the buttock support surface and the second support surface can be located in the same plane. In the second posture, the user can lie on the body care device. In the second posture, the user can receive body care. Therefore, in the second posture, a comfortable sitting experience can be provided for the user lying on the first support surface and the second support surface.

[0063] According to the body care device of the present invention, when the posture of the backrest changes from a first posture to a second posture and from the second posture to the first posture, the angle between the second resting surface and the Y-axis can smoothly rotate between approximately +60° and 0°. When the posture of the seat changes from a first posture to a second posture and from the second posture to the first posture, the angle between the buttocks resting surface and the Y-axis can smoothly rotate between less than 0° (e.g., -7°) and 0°. Therefore, except in the second posture, the buttocks resting surface can always form a backward slope. Therefore, when the posture of each of the seat and the backrest changes from the first posture to the second posture and from the second posture to the first posture, the user's weight can be distributed across the seat and the backrest, rather than concentrated on the seat. Therefore, a comfortable sitting experience can be provided to the user when the posture of each of the seat and the backrest changes from the first posture to the second posture and from the second posture to the first posture.

[0064] According to the body care device of the present invention, when the posture of each of the seat and backrest changes from a first posture to a second posture, the seat actuator can move the seat forward. When the posture of each of the seat and backrest changes from the first posture to the second posture, the controller can simultaneously control the seat actuator and the backrest actuator such that the rear end of the backrest does not move backward. Alternatively, when the posture of each of the seat and backrest changes from the first posture to the second posture, the controller can simultaneously control the seat actuator and the backrest actuator such that the rear end of the backrest moves backward only within an allowable distance. Here, the allowable distance may refer to the distance at which the rear end of the backrest does not contact an object (such as a shield) located behind the backrest. Therefore, when the posture of each of the seat and backrest changes from the first posture to the second posture, the backrest may not contact the shield. Therefore, it can tilt with or without a gap behind the backrest. Simple Explanation of the Diagram

[0065] The above and other aspects, features, and advantages of the present invention will become apparent from the following detailed description of the aspects accompanied by the accompanying drawings, wherein: Figure 1 is a perspective view of the body care device according to an embodiment of the present invention, viewed from the front upper side, showing the seat and backrest in a first posture. Figure 2 is a view showing the body cover, shield, and shield actuator removed from the body care device of Figure 1; Figure 3 is a view showing the seat cover and backrest cover removed from the body care device in Figure 2; Figure 4 is a partial enlarged view of the body care device in Figure 3, showing the guides removed from the base; Figure 5 is a partial cross-sectional view showing the state of the roller in Figure 4 resting on the running surface; Figure 6 is a perspective view of the body care device in Figure 3 when viewed from a horizontal, lower side. Figure 7 is a schematic view showing the controller, seat driver, backrest driver, and shield driver of the body care device according to an embodiment of the present invention; Figure 8 is a cross-sectional view of the body care device in Figure 3, showing the seat driver; Figure 9 is a cross-sectional view of the body care device in Figure 3, showing the backrest drive; Figure 10 is a cross-sectional view of a body care device according to an embodiment of the present invention, showing the seat and backrest in a second posture. Figure 11 is a side view showing the state of the rollers in Figure 4 resting on the traveling surface, with the second roller located at the rear end of the moving section; Figure 12 is a side view showing the state of the rollers in Figure 4 resting on the traveling surface, with the first roller located at the front end of the moving segment; Figure 13 is a view showing the state in which the mask driver is installed in a body care device according to an embodiment of the present invention; Figure 14 is a view showing the body frame, seat frame, backrest frame, shield, and shield driver of the body care device shown in Figure 13; Figure 15 is a more detailed view showing the mask driver in the body care device of Figure 13; Figures 16 to 19 are views showing the process of driving a shield in a body care device according to an embodiment of the present invention; and Figures 20 to 22 are views showing the process of driving the backrest and the cover in a body care device according to an embodiment of the present invention. Implementation

[0066] In the following, preferred embodiments of the invention will be described in detail with reference to the accompanying drawings. Regarding the description of the invention, detailed descriptions may be omitted when it is determined that a detailed description of related known technologies would unnecessarily obscure the essence of the invention.

[0067] In the embodiments of this invention, the X, Y, and Z directions can be orthogonal to each other. The X and Y directions can be parallel to the horizontal direction, while the Z direction can be parallel to the vertical direction. When the X direction is parallel to the left-right direction, the Y direction can be parallel to the front-back direction. When the X direction is parallel to the front-back direction, the Y direction can be parallel to the left-right direction.

[0068] As used in this article, "before" can refer to the direction indicated by the X-axis arrow, while "after" can refer to the opposite direction. Similarly, "up" can refer to the direction indicated by the Z-axis arrow, while "down" can refer to the opposite direction.

[0069] Figure 1 is a perspective view of the body care device 1000 according to an embodiment of the present invention, viewed from the front upper side, showing the seat 200 and backrest 300 in a first posture.

[0070] The first posture can refer to the upright position with the backrest at 300 degrees. In the first posture, the user can sit on the body care device 1000. In the first posture, the user can receive body care.

[0071] The body care device 1000 according to an embodiment of the present invention may be a massage chair that provides care for the body of a seated user.

[0072] The body care device 1000 according to an embodiment of the present invention may include: a body 100, a seat 200, a backrest 300, and a cover 400.

[0073] When using the body care device 1000, the seat 200 can support the user's lower body, including the buttocks. The front-to-back length of the seat 200 can be greater than its left-to-right width.

[0074] Figure 2 is a view showing the body cover 120, the shield 400, and the shield driver 700 removed from the body care device 1000 of Figure 1.

[0075] Figure 3 is a view showing the seat cover 220 and backrest cover 320 removed from the body care device 1000 in Figure 2.

[0076] The seat 200 may include a seat frame 210 and a seat cover 220.

[0077] The seat frame 210 can form the frame of the seat portion 200. The seat frame 210 can be formed into an approximately quadrilateral frame shape. The seat frame 210 can be manufactured by coupling a plurality of square tubes together. The seat frame 210 can contain metal and / or plastic materials.

[0078] The seat cover 220 may be coupled to the seat frame 210. The seat cover 220 may form a first resting surface 221. The first resting surface 221 may be a surface for resting the user's lower body (including the buttocks). The first resting surface 221 may include a surface for resting the user's buttocks (hereinafter referred to as "buttocks resting surface 221a"). The seat cover 220 may be made of plastic, cloth, natural leather, and / or artificial leather materials.

[0079] The seat cover 220 may include a top cover 220a and a side cover 220b.

[0080] The top cover 220a can be shaped to cover the upper surface of the seat 210. The upper surface of the top cover 220a can form a first resting surface 221. The top cover 220a can prevent the seat 210 from being exposed through the upper surface of the seat portion 200.

[0081] The side cover 220b can be shaped to cover the side surface of the seat 210. The side cover 220b can form two side surfaces of the seat 200. The side cover 220b can prevent the seat 210 from being exposed through the two side surfaces of the seat 200.

[0082] The seat 200 may include a seat massage section.

[0083] The seat massage unit may be coupled to the seat frame 210 and / or seat cover 220 below the upper cover 220a. The seat massage unit may massage the lower body (including the buttocks) of a user resting on a first resting surface 221. The first resting surface 221 may contain a soft material, such as cloth, natural leather, and / or artificial leather. The seat massage unit may apply tapping, kneading, rolling, or acupressure to the user's lower body via the first resting surface 221.

[0084] The body care device 1000 may include a controller 800 (see Figure 7). The controller 800 can control the seat massage unit.

[0085] Figure 4 is a partial enlarged view of the body care device in Figure 3, showing the state in which the guide 112 has been removed from the base 111.

[0086] The main body 100 can support the seat 200, backrest 300, and cover 400 on the floor surface (ground). The front-to-back length of the main body 100 can be greater than its left-to-right width.

[0087] The main body 100 may include a main body frame 110 and a main body cover 120.

[0088] The body frame 110 can form the framework of the body 100. The body frame 110 may include the base 111.

[0089] The base 111 can form an approximately cubic frame. The body frame 110 can be manufactured by coupling a plurality of square tubes together. The body frame 110 can contain metal and / or plastic materials. A plurality of wheels 130 can be rotatably coupled to the lower part of the body frame 110. The body 100 can slide on the floor surface via the plurality of wheels 130.

[0090] The body cover 120 can be coupled to the body frame 110. The body cover 120 can be shaped to cover the front surface, rear surface, and side surface of the body frame 110. The body cover 120 can prevent the body frame 110 from being exposed through the front surface, rear surface, and side surface of the body 100.

[0091] The body cover 120 may be shaped to cover a portion of the rear surface, side surfaces, and seat portion 200 of the backrest 300. The body cover 120 may form an armrest on which the user's arms rest on two side surfaces of the seat portion 200. The body cover 120 may be made of plastic, cloth, natural leather, and / or artificial leather materials.

[0092] The mask 400 can be deployed to block light from above the user's head as needed.

[0093] In the use of the body care device 1000, the backrest 300 can support the user's upper body, including the head, neck, back, and waist. The vertical length of the backrest 300 can be greater than its horizontal width.

[0094] The backrest 300 may include a backrest frame 310 and a backrest cover 320.

[0095] The backrest frame 310 can form the frame of the backrest 300. The backrest frame 310 can be formed into a suitable quadrilateral frame shape. The backrest frame 310 can be manufactured by coupling a plurality of square tubes together. The backrest frame 310 can contain metal and / or plastic materials.

[0096] The backrest frame 310 can be coupled to the seat frame 210, allowing it to rotate about the frame shaft 311, so that the backrest frame 310 can be upright or tilted. The frame shaft 311 can be configured as a cylindrical shaft or a sleeve. The frame shaft 311 can be parallel to the X-axis.

[0097] The bracket shafts 311 can be installed in pairs. The bracket shafts 311 can be rotatably coupled to the lower left and lower right sides of the backrest frame 310 and screwed to the rear left and rear right sides of the seat frame 210. Alternatively, the bracket shafts 311 can be rotatably coupled to the rear left and rear right sides of the seat frame 210 and screwed to the lower left and lower right sides of the backrest frame 310.

[0098] The backrest cover 320 can be coupled to the backrest frame 310. The front surface of the backrest cover 320 can form a second resting surface 321. The second resting surface 321 can refer to the surface on which the user's upper body (including the back and waist) is rested. The backrest cover 320 can be made of plastic, cloth, natural leather and / or artificial leather materials.

[0099] The backrest cover 320 may include a front cover 320a and a side cover 320b.

[0100] The front cover 320a can be shaped to cover the front surface of the backrest frame 310. The front cover 320a can form a second resting surface 321. The front cover 320a can prevent the backrest frame 310 from being exposed through the front surface of the backrest 300.

[0101] The side cover 320b can be shaped to cover the side surface of the backrest frame 310. The side cover 320b can form two side surfaces of the backrest 300. The side cover 320b can prevent the backrest frame 310 from being exposed through the two side surfaces of the backrest 300.

[0102] The 300 backrest may include a backrest massage function.

[0103] The backrest massage unit can be coupled to the backrest frame 310 and / or backrest cover 320 at the rear of the front cover 320a. The backrest massage unit can massage the upper body of the user, including the back and waist, which is resting on the second rest surface 321. The second rest surface 321 may contain soft materials, such as cloth, natural leather, and / or artificial leather. The backrest massage unit can apply tapping, kneading, rolling, or acupressure to the user's upper body via the second rest surface 321.

[0104] The body care device 1000 may include a controller 800 (see Figure 7). The controller 800 controls the backrest massage section.

[0105] The backrest 300 may include a headrest 330. The headrest 330 may be located above the backrest 300. During use of the body care device 1000, the headrest 330 supports the user's head and neck. The user can adjust the angle of the headrest 330 as needed. The headrest 330 may include a head massager for massaging the user's head and neck. The controller 800 controls the head massager.

[0106] Figure 5 is a partial cross-sectional view showing the state of the roller 231 in Figure 4 resting on the running surface.

[0107] The frame 210 may be equipped with a plurality of movable components 230. The movable components 230 may include rollers 231, roller shafts 232 and guide plates 233.

[0108] A plurality of rollers 231 may be rotatably coupled to a base 210. A roller shaft 232 may be coupled to a base 210, and the rollers 231 may be rotatably coupled to the roller shaft 232. The longitudinal direction of the roller shaft 232 may be parallel to the X-axis.

[0109] The guide disk 233 can be coupled to the roller 231. The guide disk 233 can be formed into a disk shape with a radius larger than that of the roller 231 surrounding the roller shaft 232.

[0110] The roller 231 may include a first roller 231a and a second roller 231b. The first roller 231a may be rotatably coupled to each of the left and right sides of the seat 210. The second roller 231b may be rotatably coupled to each of the left and right sides of the seat 210 after the first roller 231a.

[0111] The main frame 110 may include a guide 112. The guide 112 may be generally formed as a plate or sheet extending in the front-rear direction. The guide 112 may be made of metal and / or plastic material.

[0112] The guide 112 may include a first guide 112a and a second guide 112b.

[0113] The first guide 112a may be coupled to the upper right side of the base 111. The second guide 112b may be coupled to the upper left side of the base 111. The first guide 112a and the second guide 112b may be formed in a symmetrical shape with respect to the XZ plane. In the following text, guide 112 may refer to the first guide 112a and the second guide 112b.

[0114] The guide member 112 can form a travel surface 113, on which the roller 231 travels in the front-back direction. The first guide member 112a can form a first travel surface 113a. The second guide member 112b can form a second travel surface 113b.

[0115] The first traveling surface 113a and the second traveling surface 113b may be spaced apart from each other in the left-right direction. The first traveling surface 113a and the second traveling surface 113b may be symmetrical with respect to the XZ plane. In the following text, traveling surface 113 may refer to the first traveling surface 113a and the second traveling surface 113b.

[0116] The guide 112 may form a guide surface 117 that curves downward from the travel surface 113. The guide surface 117 may be formed as a surface facing the guide disk 233 in the left-right direction.

[0117] The guide surface of the first guide 112a (hereinafter referred to as the "first guide surface") and the guide surface of the second guide 112b (hereinafter referred to as the "second guide surface") may be spaced apart from each other in the left-right direction. The first guide surface and the second guide surface may be formed in a symmetrical shape with respect to the XZ plane. In the following, guide surface 117 may refer to the first guide surface and the second guide surface.

[0118] The first roller 231a and the second roller 231b can rest on the travel surface 113 on each of the left and right sides of the main body frame 110. The second roller 231b can rest on the travel surface 113 behind the first roller 231a. The first roller 231a and the second roller 231b located on the right side of the seat frame 210 can rest on the first travel surface 113a. The first roller 231a and the second roller 231b located on the left side of the seat frame 210 can rest on the second travel surface 113b.

[0119] The base 111 can support the load of the seat 200 and the backrest 300 via the travel surface 113. The load of the seat 200 and the backrest 300 can be applied to the travel surface 113 via the first roller 231a and the second roller 231b. Therefore, the first roller 231a and the second roller 231b can remain resting on the travel surface 113.

[0120] Figure 6 is a perspective view of the body care device 1000 in Figure 3 when viewed from a horizontal, lower side.

[0121] Figure 7 is a schematic view showing the controller 800, seat driver 500, backrest driver 600, and shield driver 700 of the body care device 1000 according to an embodiment of the present invention.

[0122] The body care device 1000 according to an embodiment of the present invention may include: a seat driver 500, a backrest driver 600, a cover driver 700, and a controller 800.

[0123] The seat driver 500 is mounted on the body frame 110 and configured to move the seat frame 210 in the front-rear direction.

[0124] The backrest drive 600 is mounted on the seat frame 210 and configured to allow the backrest frame 310 to rotate about the frame axis 311.

[0125] The mask driver 700 connects the body frame 110 and the mask 400 to each other and is configured to rotatably drive the mask 400 relative to the body frame 110.

[0126] The controller 800 can control the seat driver 500, the backrest driver 600, and the shield driver 700.

[0127] The body care device 1000 may include various sensors. These sensors can detect when a user is sitting on the seat 200. The controller 800 can receive signals from these sensors and automatically initiate operations.

[0128] When the user is seated on the seat 200, various sensors can measure body temperature, body fat, pulse, blood pressure, and similar parameters. The controller 800 can receive signals from the various sensors to diagnose the user's health status and adjust the massage mode or intensity accordingly.

[0129] The body care device 1000 may include a remote control. This remote control can transmit signals to the controller 800. The user can manipulate the remote control to finely set / control massage movements, massage range, massage position, massage speed, massage intensity, etc.

[0130] The main body cover 120 may include a first magnetic part. The remote control may include a second magnetic part. The first magnetic part may include a permanent magnet. The second magnetic part may include a permanent magnet or a ferromagnetic body. The remote control may be magnetically attached to the main body cover 120 by means of the first and second magnetic parts. The first magnetic part may be located on or near the armrest.

[0131] Figure 8 is a cross-sectional view of the body care device 1000 of Figure 3, showing the seat driver 500.

[0132] Figure 9 is a cross-sectional view of the body care device 1000 of Figure 3, showing the backrest drive 600.

[0133] Figures 8 and 9 are views showing the seat 200 and backrest 300 in a first posture. The first posture can refer to the upright position of the backrest 300. In the first posture, the user can sit on the body care device 1000. In the first posture, the user can receive body care.

[0134] The seat actuator 500 may include a linear actuator rotatably coupled to point 1a 501 of the body frame 110 and point 2a 502 of the seat frame 210 to extend and retract between point 1a 501 and point 2a 502.

[0135] The seat drive 500 may include a linear motor, which is a linear extension of a rotary AC motor. Alternatively, the seat drive 500 may include a rotary motor and a rack and pinion mechanism.

[0136] The seat drive 500 may include a stationary part and a moving part. The moving part can move linearly relative to the stationary part.

[0137] The stationary part can be rotatably coupled to point 1a 501 of the main body frame 110 via a cylindrical shaft. Point 1a 501 can be located above the rear part of the base 111. The longitudinal direction of the cylindrical shaft can be parallel to the X-axis.

[0138] The movable part can be rotatably coupled to point 2a 502 of the base 210 via a cylindrical shaft. Point 2a 502 can be located below the front of the base 210. The longitudinal direction of the cylindrical shaft can be parallel to the X-axis.

[0139] Figure 10 is a cross-sectional view of a body care device 1000 according to an embodiment of the present invention, showing the seat 200 and backrest 300 in a second posture.

[0140] The second posture can refer to the position where the user lies flat against the backrest (300°). In this second posture, the user can lie on the body care device (1000) and receive body care.

[0141] When the moving part moves linearly relative to the stationary part, the seat driver 500 can push the seat frame 210 forward or pull the seat frame 210 backward. At this time, the first roller 231a and the second roller 231b can travel along the travel surface 113 in the front-back direction on the left and right sides of the main body frame 110. Therefore, the seat part 200 can travel in the front-back direction.

[0142] At this time, the guide surface 117 can face one side of the guide disk 233 on the left and right sides of the main body frame 110 with a small gap in the left and right directions (see Figure 5).

[0143] Therefore, when the first roller 231a and the second roller 231b travel along the travel surface 113 in the front-to-back direction on the left and right sides of the main body frame 110, they can prevent the first roller 231a and the second roller 231b from moving in the left-to-right direction. Therefore, the left-to-right movement and rotation of the seat 200 can be prevented.

[0144] Figure 11 is a side view showing the state of the roller 231 of Figure 4 resting on the traveling surface 113, wherein the second roller 231b is located at the rear end point S2 of the moving segment S.

[0145] Figure 12 is a side view showing the state of the roller 231 of Figure 4 resting on the traveling surface 113, wherein the first roller 231a is located at the front end point S1 of the moving segment S.

[0146] The guide 112 can form a moving segment S, in which the moving member 230 moves in the front-to-back direction. The moving segment S can refer to the path or space in which the first roller 231a and the second roller 231b move.

[0147] The rear end point S2 of the moving segment S can refer to the point or space where the second roller 231b is located in the first posture. The rear end point S2 of the traveling surface 113 can refer to the point where the second roller 231b is located in the first posture. The rear end point S2 of the moving segment S and the rear end point S2 of the traveling surface 113 can be used interchangeably. The front end point S1 of the moving segment S can refer to the point or space where the first roller 231a is located in the second posture. The front end point S1 of the traveling surface 113 can refer to the point where the first roller 231a is located in the second posture. The front end point S1 of the moving segment S and the front end S1 of the traveling surface 113 can be used interchangeably.

[0148] When the seat drive 500 extends and retracts between points 1a 501 and 2a 502, the first roller 231a and the second roller 231b can move in the forward and backward direction in the moving segment S.

[0149] The controller 800 can control the seat driver 500, so that the posture of the seat 200 changes from a first posture to a second posture and from a second posture to a first posture.

[0150] When the second roller 231b is located at the rear end point S2 of the moving segment S (see Figure 11), the seat 200 can be in a first position (see Figure 9). The first position can refer to the upright position of the backrest 300. In the first position, the user can sit on the body care device 1000. In the first position, the user can receive body care.

[0151] When the first roller 231a is located at the front end S1 of the moving segment S (see Figure 12), the seat 200 can be in a second position (see Figure 10). The second position can refer to the state where the backrest 300 is laid flat. In the second position, the user can lie on the body care device 1000. In the second position, the user can receive body care.

[0152] The front boundary member 115 and the rear boundary member 116 can be coupled to the guide 112.

[0153] The front boundary member 115 can be coupled to the guide 112 in front of the front end point S1 of the moving segment S. The front boundary member 115 can prevent the first roller 231a from deviating from the front of the moving segment S.

[0154] The rear boundary member 116 can be coupled to the guide 112 behind the rear end point S2 of the moving segment S. The rear boundary member 116 can prevent the second roller 231b from deviating from the rear of the moving segment S.

[0155] The guide 112 may include an upper traveling surface 114. The upper traveling surface 114 may form the upper surface of the moving segment S. The traveling surface 113 may form the lower surface of the moving segment S. The roller 231 may be placed on the traveling surface 113 with a small gap between it and the upper traveling surface 114 (see Figure 5).

[0156] Therefore, even if the user sitting on the seat 200 moves their body or an external force is applied to the seat 200, the up-and-down movement of the first roller 231a and the second roller 231b can still be prevented. Thus, the up-and-down movement and rotation of the seat 200 can be prevented.

[0157] The first roller 231a can be rotatably coupled to the base 210. The second roller 231b can be rotatably coupled to the base 210 behind the first roller 231a. Therefore, the straight line connecting the central axis of the first roller 231a and the second roller 231b (hereinafter referred to as the "axial connecting line CL") can rotate integrally with the base 210.

[0158] The seat cover 220 may be coupled to the seat frame 210. The seat cover 220 may form a first resting surface 221. The first resting surface 221 may include a buttock resting surface 221a. Therefore, the axial connecting line CL may rotate integrally with the buttock resting surface 221a.

[0159] In the first posture of the seat 200, the second roller 231b can be positioned lower than the first roller 231a. Therefore, based on the central axis of the first roller 231a, in the first posture, the axial connecting line CL can form an angle of less than 0° with the Y-axis (see Figure 11). In one example, in the first posture, the axial connecting line CL can form an angle of -7° with the Y-axis. The "-" symbol can point to a backward tilt.

[0160] In the first posture, the user can sit on the body care device 1000. In this posture, the user can receive body care. The axial connecting line CL can be parallel to the buttocks rest surface 221a. Therefore, in the first posture, the buttocks rest surface 221a can form an angle of less than 0° (e.g., -7°) with the Y-axis (see Figure 8). Thus, the buttocks rest surface 221a can form a backward downhill slope. Therefore, in the first posture, the weight of the user sitting on the seat 200 can be distributed across the seat 200 and the backrest 300, rather than concentrated on the seat 200. In the first posture, this provides a comfortable sitting experience for the user sitting on the seat 200.

[0161] The moving segment S can form a curved shape with varying height in the front-to-back direction. The traveling surface 113 can form a curved surface with different heights in the front-to-back direction. Therefore, when the posture of the seat 200 changes from a first posture to a second posture and from a second posture to a first posture, the first roller 231a and the second roller 231b can travel along the curved surface, thereby smoothly changing the angle of the buttocks rest surface 221a. Thus, a comfortable sitting experience can be provided for the user sitting on the seat 200.

[0162] The walking surface 113 can form an upwardly convex surface in the front-rear direction. Therefore, when the moving member 230 moves from the rear end point S2 of the moving segment S to the front end point S1, the angle between the buttocks resting surface 221a and the horizontal plane can decrease. Conversely, when the moving member 230 moves from the front end point S1 to the rear end point S2 of the moving segment S, the angle between the buttocks resting surface 221a and the horizontal plane can increase. That is, when the posture of the seat 200 changes from the first posture to the second posture and from the second posture to the first posture, the first roller 231a and the second roller 231b can travel along the curved surface, thereby allowing the buttocks resting surface 221a to rotate smoothly to both sides. This provides a comfortable sitting experience for the user sitting on the seat 200.

[0163] The walking surface 113 can be formed with a constant curvature in the front-to-back direction. Therefore, the moving speed and rotational speed of the seat 200 can be proportional to each other. Thus, when the posture of the seat 200 changes from a first posture to a second posture and from a second posture to a first posture, the first roller 231a and the second roller 231b can travel along the curved surface at a constant speed, thereby allowing the buttocks rest surface 221a to rotate smoothly at a constant angular velocity. Therefore, a comfortable sitting experience can be provided for the user sitting on the seat 200.

[0164] The peak point S3 of the moving segment S can be located between the front end point S1 and the rear end point S2 of the moving segment S. The peak point S3 of the traveling surface 113 can be located between the front end S1 and the rear end S2 of the traveling surface 113. Therefore, the first roller 231a can be located in front of the peak point S3 of the traveling surface 113 or the moving segment S, while the second roller 231b can be located behind the peak point S3 of the traveling surface 113 or the moving segment S. At this time, the central axis of the first roller 231a and the central axis of the second roller 231b can form the same height, and the axial connecting line CL can form an angle of 0° with the Y-axis (see Figure 10). At this time, the seat 200 can form a second posture. Therefore, when the posture of the seat 200 changes from the first posture to the second posture and from the second posture to the first posture, the angle between the buttocks resting surface 221a and the Y-axis can rotate smoothly between less than 0° (e.g., -7°) and 0°. This provides a comfortable sitting experience for the user sitting on the seat 200.

[0165] The peak point S3 of the moving segment S can be closer to the front point S1 of the moving segment S than the rear point S2 of the moving segment S. The peak point S3 of the traveling surface 113 can be closer to the front point S1 of the traveling surface 113 than the rear point S2 of the traveling surface 113. Therefore, when the second roller 231b moves to the rear point S2 of the moving segment S, the axial connecting line CL can form an angle of less than 0° with the Y-axis (see Figure 11). When the first roller 231a moves to the front point S1 of the moving segment S, the axial connecting line CL can form an angle of 0° with the Y-axis (see Figure 12). Therefore, the length of the moving segment S and the traveling surface 113 in the front-rear direction can be minimized. Therefore, the length of the guide 112 in the front-rear direction can be minimized.

[0166] The rear endpoint S2 of the moving segment S can be lower than the front endpoint S1 of the moving segment S. Therefore, even if the traveling surface 113 is formed with a constant curvature, the peak point S3 of the moving segment S can still be closer to the front endpoint S1 of the moving segment S than the rear endpoint S2. Therefore, even if the traveling surface 113 is formed with a constant curvature, when the second roller 231b moves to the rear endpoint S2 of the moving segment S, the axial connecting line CL can still form an angle of less than 0° with the Y-axis (see Figure 11). When the first roller 231a moves to the front endpoint S1 of the moving segment S, the axial connecting line CL can form an angle of 0° with the Y-axis (see Figure 12). Therefore, even if the traveling surface 113 is formed with a constant curvature, the length of the guide 112 in the front-rear direction can still be minimized.

[0167] The backrest drive 600 may include a linear actuator rotatably coupled to point 1b 601 of the seat frame 210 and point 2b 602 of the backrest frame 310 to extend and retract between point 1b and point 2b 602.

[0168] The backrest drive 600 may include a linear motor, which is a linear extension of a rotary AC motor. Alternatively, the backrest drive 600 may include a rotary motor and a rack and pinion mechanism.

[0169] The backrest drive 600 may include a stationary part and a moving part. The moving part can move linearly relative to the stationary part.

[0170] The stationary part can be rotatably coupled to point 601 of the base 210 via a cylindrical shaft. Point 601 can be located below the front of the base 210. The longitudinal direction of the cylindrical shaft can be parallel to the X-axis.

[0171] The movable part can be rotatably coupled to point 2b 602 of the backrest frame 310 via a cylindrical shaft. Point 2b 602 can be located below the rear of the backrest frame 310. Point 2b 602 can be located below the rear of the frame shaft 311. The longitudinal direction of the cylindrical shaft can be parallel to the X-axis.

[0172] When the moving part moves linearly relative to the stationary part, point 2b 602 can rotate around the frame axis 311. Therefore, when the moving part moves linearly relative to the stationary part, the backrest drive 600 can cause the backrest frame 310 to rotate around the frame axis 311. That is, when the backrest drive 600 extends and retracts between point 1b 601 and point 2b 602, the backrest frame 310 can rise forward (see Figure 1) or lower backward (see Figure 9).

[0173] The controller 800 can simultaneously control the seat driver 500 and the backrest driver 600, so that the posture of each of the seat 200 and the backrest 300 changes from a first posture to a second posture and from a second posture to a first posture.

[0174] The controller 800 can simultaneously control the seat driver 500 and the backrest driver 600, so that when the seat frame 210 moves forward, the backrest frame 310 tilts (see Figure 10), and when the seat frame 210 moves backward, the backrest frame 310 rises (see Figure 9).

[0175] In the first posture, the second resting surface 321 of the backrest 300 can tilt backward (see Figure 9). In one example, in the first posture, the second resting surface 321 of the backrest 300 can tilt backward to form an angle of approximately +60° with the Y-axis. The "+" sign may point forward. In the first posture, the buttocks resting surface 221a can form an angle of less than 0° (e.g., -7°) with the Y-axis. Therefore, in the first posture, the buttocks resting surface 221a can form a backward slope, while the second resting surface 321 can tilt backward. In the first posture, the user can sit on the body care device 1000. In the first posture, the user can receive body care. In the first posture, the angle between the buttocks resting surface 221a and the second resting surface 321 can be slightly greater than 90°. In one example, in the first posture, the buttocks resting surface 221a and the second resting surface 321 can form an angle of approximately 110°. Therefore, in the first posture, the weight of the user sitting on the seat 200 can be distributed across the seat 200 and the backrest 300, rather than being concentrated on the seat 200. In the first posture, this provides a comfortable sitting experience for the user sitting on the seat 200.

[0176] In the second posture, the second resting surface 321 of the backrest 300 forms a 0° angle with the Y-axis (see Figure 10). In the second posture, the buttocks resting surface 221a forms a 0° angle with the Y-axis. Therefore, in the second posture, the buttocks resting surface 221a and the second resting surface 321 form a 0° angle with the Y-axis. In the second posture, the buttocks resting surface 221a and the second resting surface 321 can be located in the same plane. In the second posture, the user can lie on the body care device 1000. In the second posture, the user can receive body care. Therefore, in the second posture, a comfortable sitting experience can be provided for the user lying on the first resting surface 221 and the second resting surface 321.

[0177] When the posture of the backrest 300 changes from a first posture to a second posture and from a second posture back to a first posture, the angle between the second resting surface 321 and the Y-axis can smoothly rotate between approximately +60° and 0°. When the posture of the seat 200 changes from a first posture to a second posture and from a second posture back to a first posture, the angle between the buttocks resting surface 221a and the Y-axis can smoothly rotate between less than 0° (e.g., -7°) and 0°. Therefore, except in the second posture, the buttocks resting surface 221a can always form a backward slope. Therefore, when the posture of each of the seat 200 and the backrest 300 changes from a first posture to a second posture and from a second posture back to a first posture, the user's weight can be distributed across the seat 200 and the backrest 300, rather than concentrated on the seat 200. Therefore, a comfortable sitting experience can be provided for the user when the posture of each of the seat 200 and the backrest 300 changes from a first posture to a second posture and from a second posture back to a first posture.

[0178] When the posture of each of the seat 200 and the backrest 300 changes from a first posture to a second posture, the seat actuator 500 can move the seat 200 forward. When the posture of each of the seat 200 and the backrest 300 changes from the first posture to the second posture, the controller 800 can simultaneously control the seat actuator 500 and the backrest actuator 600 so that the rear end of the backrest 300 does not move backward. Alternatively, when the posture of each of the seat 200 and the backrest 300 changes from the first posture to the second posture, the controller can simultaneously control the seat actuator 500 and the backrest actuator 600 so that the rear end of the backrest 300 moves backward only within a permissible distance. Here, this permissible distance may refer to the distance at which the rear end of the backrest 300 does not contact an object (such as a shield 400) located behind the backrest 300. Therefore, when the posture of each of the seat 200 and the backrest 300 changes from the first posture to the second posture, the backrest 300 may not contact the shield 400. Therefore, tilting is possible, whether or not there is a gap behind the backrest 300.

[0179] Figure 13 is a view showing the state in which the mask driver 700 is installed in the body care device 1000 according to an embodiment of the present invention. Figure 14 is a view showing the body frame 110, seat frame 210, backrest frame 310, mask 400, and mask driver 700 in the body care device 1000 of Figure 13. Figure 15 is a view showing the mask driver 700 in the body care device 1000 of Figure 13 in more detail. Figures 16 to 19 are views showing the process of driving the mask 400 in the body care device 1000 according to an embodiment of the present invention.

[0180] The body care device 1000 according to an embodiment of the present invention includes: a main frame 110, a seat frame 210, a backrest frame 310, a cover 400, and a cover driver 700. In this case, when the cover 400 rotates, the cover driver 700 moves the cover 400 in the front-rear direction of the main frame 110.

[0181] Here, the forward direction is the direction facing the user sitting on the body care device 1000, which can be the direction indicated by the Y-axis arrow in the figure. The backward direction is the direction facing the user sitting on the body care device 1000 behind, which can be the opposite of the direction indicated by the Y-axis arrow in the figure.

[0182] Therefore, the front-back direction of the main frame 110 can be the direction in front of and behind the user sitting on the body care device 1000, and can be along the Y-axis in the figure.

[0183] The main body frame 110 is a component that forms the frame of the main body 100, which can support the seat 200, the backrest 300 and the cover 400 on the floor surface (ground).

[0184] The seat frame 210 is a component that forms the frame of the seat 200. It can be mounted on the main body frame 110 to support the user's buttocks.

[0185] The backrest frame 310 is a component that forms the frame of the backrest 300, and one end 312 of it can be coupled to the seat frame 210 to support the user's back.

[0186] The mask 400 is a component that is rotatably mounted on the body frame 110 to cover the other end 313 of the backrest frame 310 when rotated. The mask 400 can be deployed to cover the face of a seated user as needed.

[0187] The mask driver 700 is a component that connects the main body frame 110 and the mask 400 to allow the mask 400 to rotate relative to the main body frame 110. The mask driver 700 can drive the mask 400 when the user inputs a drive signal, without having to drive the mask 400 directly.

[0188] Therefore, users of the body care device 1000 can cover their face when necessary by driving the mask 400 via the mask driver 700, thereby preventing sleep and rest from being disturbed by light from the ceiling or the like.

[0189] However, if the rotation of the mask 400 is implemented through a simple hinge rotation, the rotating mask 400 may collide with the user's head.

[0190] Therefore, the body care device 1000 according to this embodiment can be configured such that the shield 400 rotates while moving in the front-rear direction of the body frame 110, thereby preventing such collisions from occurring.

[0191] Therefore, in the body care device 1000 according to an embodiment of the present invention, when the cover 400 rotates relative to the main body frame 110, the cover 400 moves in the front-rear direction of the main body frame 110, thereby preventing the rotating cover 400 from colliding with the user's head, thus making the use of the body care device 1000 more convenient and smoother.

[0192] In the body care device 1000 according to an embodiment of the present invention, the mask driver 700 may include: a first mask link 710, a second mask link 720, and a third mask link 730.

[0193] The first shielding link 710 is a component configured such that its center is hingedly coupled to the first link hinge axis 701 formed in the transverse direction at the body frame 110, and is hingedly rotatable about the first link hinge axis 701.

[0194] The second shield link 720 is a component configured such that one end 721 is hingedly coupled to a second link hinge axis 702 formed at one end 711 of the first shield link 710 so as to be parallel to the first link hinge axis 701, while its other end 722 is coupled to the shield 400.

[0195] Therefore, when the first shielding link 710 is hinged to rotate, one end 721 of the second shielding link 720 coupled to one end 711 of the first shielding link 710 can move together, and the shield 400 coupled to the other end 722 of the second shielding link 720 can also move. In this case, the second shielding link 720 can be hinged to rotate about the second link hinge axis 702.

[0196] The third shielding link 730 is configured such that one end 731 is hingedly coupled to the third link hinge axis 703 formed in the center of the second shielding link 720 so as to be parallel to the first link hinge axis 701, while the other end 732 is hingedly coupled to the fourth link hinge axis 704 formed in the body frame 110 so as to be parallel to the first link hinge axis 701.

[0197] Therefore, when the second shielding link 720 moves, the center of the second shielding link 720 can move within the constraint range of the third shielding link 730. In this case, the third shielding link 730 can rotate hingedly about the third link hinge axis 703 and the fourth link hinge axis 704.

[0198] In the following text, the process of mask driver 700 driving mask 400 will be described with reference to Figures 16 to 19.

[0199] First, as shown in Figure 16, if the mask 400 is not required, the first mask link 710, the second mask link 720 and the third mask link 730 can be coupled to each other without operation.

[0200] Next, when the mask 400 is driven by the user, the first mask link 710 can be hinged to rotate about the first link hinge axis 701, as shown in Figure 17. As a result, one end 711 of the first mask link 710 moves backward, and the second mask link 720 and the mask 400 coupled to one end 711 of the first mask link 710 can also move backward.

[0201] In this case, the center of the second shielding link 720 moves along the rotation radius of the third shielding link 730 because the center of the second shielding link 720 is hingedly coupled to one end 731 of the third shielding link 730.

[0202] Next, as shown in Figure 18, further rotation of the first masking link 710 causes the mask 400 to move backward until the second masking link 720 moves to its rearmost position.

[0203] Next, as shown in Figure 19, further rotation of the first masking link 710 causes one end 721 of the second masking link 720 to move downward. In this case, the second masking link 720 is at an inclined placement angle, causing the mask 400 coupled to the other end 722 of the second masking link 720 to rotate, since the center of the second masking link 720 is hingedly coupled to one end 731 of the third masking link 730.

[0204] Through the driving steps described above, the mask 400 can move in the front-back direction while rotating, and the structure of the mask driver 700 that drives the mask 400 can be relatively simple and effective.

[0205] Therefore, in the body care device 1000 according to an embodiment of the present invention, the mask driver 700 that drives the mask 400 includes: a first mask link 710, a second mask link 720, and a third mask link 730. Thus, the mask driver 700 can occupy a small installation space, while reducing the operating load and time, thereby optimizing the function and usability of the body care device 1000.

[0206] In the body care device 1000 according to an embodiment of the present invention, the mask driver 700 may further include a mask actuator 740 coupled to the other end 712 of the first mask link 710 to rotate the first mask link 710 about the first link hinge axis 701.

[0207] In this case, the mask actuator 740 may include a linear actuator configured to have a variable length of the component coupled to the other end 712 of the first mask link 710.

[0208] Therefore, as shown in Figures 16 to 19, when the length of the mask actuator 740 decreases, the first mask link 710 can rotate to drive the mask 400. When the length of the mask actuator 740 increases, the first mask link 710 can rotate in the opposite direction to return the mask 400 to its original position.

[0209] Meanwhile, the mask actuator 740 may include a linear motor, which is a linear extension of a rotary AC motor. Alternatively, the mask actuator 740 may include a rotary motor and a rack and pinion mechanism.

[0210] Therefore, in the body care device 1000 according to an embodiment of the present invention, the mask driver 700 is operated by the mask actuator 740, thereby automatically and precisely driving the mask 400.

[0211] In the body care device 1000 according to an embodiment of the present invention, the mask actuator 740 is hingedly coupled to each of the body frame 110 and the first mask link 710.

[0212] As described above, when the mask actuator 740, which is coupled to the other end 712 of the first mask link 710, rotates the first mask link 710, the coupling angle between the other end 712 of the first mask link 710 and the mask actuator 740 can be changed.

[0213] To counteract such a change in coupling angle, it is desirable to allow the placement angle of the mask actuator 740 to change appropriately with the rotation of the first mask link 710, rather than being fixed.

[0214] Therefore, the mask actuator 740 can be hingedly coupled to each of the body frame 110 and the first mask link 710 to allow the placement angle of the mask actuator 740 to change appropriately as the first mask link 710 rotates.

[0215] Therefore, in the body care device 1000 according to an embodiment of the present invention, the mask actuator 740 is mounted to be hingedly rotatable, thereby smoothly providing driving force to the other end 712 of the first mask link 710, the position of the first mask link 710 changing as it is hingedly rotated.

[0216] In the body care device 1000 according to an embodiment of the present invention, the first shielding link 710 is bendable about the first link hinge axis 701. That is, the first shielding link 710 may be a single component that extends to both ends at different angles about the first link hinge axis 701.

[0217] As described above, the first shielding link 710 can be configured to move the second shielding link 720 and the shield 400 while they are pivotally rotating.

[0218] In this case, if the first shielding link 710 is integrally formed as a straight line, the first shielding link can have a relatively large radius of rotation, which may require a large installation space. Therefore, if the first shielding link 710 is composed of a plurality of components coupled to each other, this may result in a relatively complex structure and may create stress-vulnerable areas in the drive force transmission structure.

[0219] Therefore, the first shielding link 710 is formed as a single component and bends around the first link hinge axis 701 to solve the above-mentioned problem.

[0220] Therefore, in the body care device 1000 according to an embodiment of the present invention, the first shielding link 710 is hingedly rotated about the bending portion, and thus even if the first shielding link 710 is formed as a single component, the direction of the driving force transmitted by hinged rotation of the first shielding link 710 can be effectively changed.

[0221] In the body care device 1000 according to an embodiment of the present invention, the second shielding link 720 is bendable about the third link hinge axis 703. That is, the second shielding link 720 can be formed as a single component that extends to both ends at different angles about the third link hinge axis 703.

[0222] As described above, the second masking link 720 is movable in the front-to-back direction in response to the hinged rotation of the first masking link 710, and can be configured to rotate the mask 400 as its placement angle changes.

[0223] In this case, if the second shielding link 720 is straight overall, the change in the installation angle of the large-scale rotating shield 400 must be relatively large, which requires a large installation space. Therefore, if the second shielding link 720 is composed of a plurality of components coupled to each other, this can lead to a relatively complex structure and create stress-prone areas in the drive force transmission structure.

[0224] Therefore, the second shielding link 720 is formed as a single component and bends around the third link hinge axis 703 to solve the above-mentioned problem.

[0225] Therefore, in the body care device 1000 according to an embodiment of the present invention, even if the second shielding link 720 is formed as a single component, the direction of the driving force transmitted through the hinged rotation of the first shielding link 710 can still be effectively changed.

[0226] In the body care device 1000 according to an embodiment of the present invention, the first shielding link 710 is bendable such that one end 711 is positioned further rearward than an extension of its other end 712 connected to the center. In this case, the second shielding link 720 is bendable such that its other end 722 is positioned further forward than an extension of its one end 721 connected to the center.

[0227] That is, as shown in Figure 15, the extension line connecting the other end 712 of the first masking link 710 to the center can be set further forward than the first end 711 of the first masking link 710.

[0228] Therefore, compared to the angle of hinged rotation of the first masking link 710, the distance that one end 711 of the first masking link 710 can move backward can be increased. That is, even if the rotation of the first masking link 710 is relatively small, the second masking link 720 and the mask 400 can still move significantly in the front-back direction.

[0229] As shown in Figure 15, the extension line connecting one end 721 of the second masking link 720 to the center can be set further back than the other end 722 of the second masking link 720.

[0230] Therefore, compared to the tilt angle of the second shielding link 720, the tilt angle of the other end 722 of the second shielding link 720 can be increased. That is, even if the second shielding link 720 has a relatively small tilt angle, the rotation angle of the shield 400 coupled to the other end 722 of the second shielding link 720 can still be increased.

[0231] Therefore, the body care device 1000 according to an embodiment of the present invention is configured to have a structure in which the bending direction of each of the first shield link 710 and the second shield link 720 optimizes the drive of the shield 400, thereby effectively driving the shield 400 even if the shield actuator 740 causes a relatively small displacement.

[0232] Figures 20 to 22 are views showing the process of driving the backrest frame 310 and the cover 400 in the body care device 1000 according to an embodiment of the present invention.

[0233] The body care device 1000 according to an embodiment of the present invention may further include a body cover 120 configured to cover the body frame 110, the seat frame 210, and the backrest frame 310. In this case, the shield 400 may be detachably coupled to the body cover 120.

[0234] Specifically, the body cover 120 can be shaped to cover the front surface, rear surface, and side surface of the body frame 110. The body cover 120 can prevent the body frame 110 from being exposed through the front surface, rear surface, and side surface of the body 100.

[0235] As shown in Figure 20, the mask 400 can be coupled to the body cover 120 to form an overall appearance. If the mask 400 is required to be used, the mask 400 can be removed from the body cover 120 to cover the face of a seated user, as shown in Figures 21 and 22.

[0236] Therefore, in the body care device 1000 according to an embodiment of the present invention, the cover 400 is detachably coupled to the body cover 120 that forms the main appearance, and thus the cover 400 coupled to the body cover 120 provides a sense of unity, thereby improving the visual effect of the design.

[0237] In the body care device 1000 according to an embodiment of the present invention, the uppermost end of the cover 400, when the cover 400 is not removed from the body cover 120, can be located further back than the other end 313 of the backrest frame 310.

[0238] That is, as shown in Figure 20, if the mask 400 must be used, the uppermost part of the mask 400 can be located further back than the other end 313 of the backrest frame 310.

[0239] Assuming the user's face is located on the other end 313 of the backrest frame 310, if a mask 400 is required, the mask 400 does not need to cover the other end 313 of the backrest frame 310.

[0240] Conversely, the closer the shield 400 is to the other end 313 of the backrest frame 310, the more likely the shield 400 is to collide with the head of the user located on the other end 313 of the backrest frame 310, and therefore it is desirable that the uppermost part of the shield 400 is located further back than the other end 313 of the backrest frame 310.

[0241] Therefore, in the body care device 1000 according to an embodiment of the present invention, the uppermost end of the cover 400 is located further back than the other end 313 of the backrest frame 310 when the main body cover 120 and the cover 400 are not detached from each other, and thus the cover 400 can be prevented from interfering with the user's head or other main components when it is not necessary to cover the face of the seated user.

[0242] In the body care device 1000 according to an embodiment of the present invention, when the cover 400 is removed from the body cover 120 and rotated, the uppermost end of the cover 400 may be located further forward than the other end 313 of the backrest frame 310.

[0243] That is, as shown in Figure 22, when the mask 400 is rotated for use, the uppermost part of the mask 400 can be located further forward than the other end 313 of the backrest frame 310.

[0244] Assuming the user's face is located on the other end 313 of the backrest frame 310, if a mask 400 is required, the mask 400 needs to cover the other end 313 of the backrest frame 310.

[0245] Therefore, it is desirable for the top of the shield 400 to be positioned further forward than the other end 313 of the backrest frame 310, so as to cover more of the user's face located on the other end 313 of the backrest frame 310.

[0246] Thus, in the body care device 1000 according to an embodiment of the present invention, the uppermost end of the cover 400, when the cover 400 is rotated after being removed from the main body cover 120, is located further forward than the other end 313 of the backrest frame 310, so that the cover 400 can more effectively cover the face of the seated user when necessary.

[0247] The body care device 1000 according to an embodiment of the present invention may further include a backrest drive 600, which is configured to rotate the backrest frame 310 relative to the seat frame 210.

[0248] That is, the backrest frame 310 can be coupled to the seat frame 210, so that it can rotate about the frame axis 311, allowing the backrest frame to be raised or tilted, and the backrest drive 600 can drive the backrest frame 310.

[0249] Therefore, users can use the body care device 1000 and adjust the angle of the backrest 310 as needed to suit their preferences and environment.

[0250] In the body care device 1000 according to an embodiment of the present invention, the backrest drive 600 can rotate the backrest frame 310 while the cover 400 is moved behind the main body frame 110.

[0251] Therefore, it can effectively prevent the backrest frame 310 from colliding with the shield 400 during its rotation.

[0252] In the body care device 1000 according to an embodiment of the present invention, the mask driver 700 can rotate the mask 400 while the backrest frame 310 is rotating.

[0253] Therefore, it can effectively prevent the shield 400 from colliding with the backrest frame 310 during its rotation.

[0254] The body care device 1000 according to an embodiment of the present invention includes: a main frame 110, a seat frame 210, a backrest frame 310, a backrest driver 600, a cover 400, a cover driver 700, and a controller 800. In this case, the controller 800 performs control, causing the backrest driver 600 and the cover driver 700 to operate sequentially.

[0255] That is, the backrest driver 600 and the shield driver 700 can be connected to each other, so that the backrest driver 600 and the shield driver 700 do not operate at the same time, but operate alternately in a specific order.

[0256] If the backrest drive 600 and the shield drive 700 operate simultaneously, the backrest frame 310 may collide with the shield 400 when tilted, or the shield 400 may collide with the backrest frame 310 when rotating.

[0257] Therefore, it is desirable to ensure that the backrest 310 and the shield 400 are controlled sequentially without interfering with each other.

[0258] Therefore, in the body care device 1000 according to an embodiment of the present invention, the operation of the mask driver 700 that drives the mask 400 and the backrest driver 600 that drives the backrest frame 310 are performed in conjunction with each other, so that the rotation of the mask 400 does not interfere with the rotation of the backrest frame 310, and thus the operation of each element of the body care device 1000 can be performed smoothly.

[0259] In the body care device 1000 according to an embodiment of the present invention, the controller 800 can control the mask driver 700 to move the mask 400 in the front-rear direction of the body frame 110 when the mask 400 is rotated.

[0260] Therefore, the rotating shield 400 can be prevented from colliding with the user's head, making the use of the body care device 1000 more convenient and smooth.

[0261] In the body care device 1000 according to an embodiment of the present invention, the controller 800 can control the backrest driver 600 and the cover driver 700, so that the backrest frame 310 rotates when the cover 400 moves behind the main body frame 110.

[0262] That is, as shown in Figures 20 and 21, the shield 400 can be moved to the rear of the main body frame 110 before the backrest frame 310 rotates. When the backrest frame 310 rotates in this state, it can prevent the rotating backrest frame 310 from interfering with the shield 400.

[0263] Thus, in the body care device 1000 according to an embodiment of the present invention, the backrest frame 310 rotates while the cover 400 is moved behind the main body frame 110, thereby effectively preventing the backrest frame 310 from colliding with the cover 400 during its rotation.

[0264] In the body care device 1000 according to an embodiment of the present invention, the controller 800 can control the backrest driver 600 and the cover driver 700, so that the cover 400 rotates while the backrest frame 310 is rotating.

[0265] That is, as shown in Figures 21 and 22, the backrest frame 310 can rotate before the backrest frame 310 rotates when the shield 400 has moved to the rear. In this way, the shield 400 rotates while the backrest frame 310 has already rotated, thereby preventing the rotating shield 400 from interfering with the backrest frame 310.

[0266] Therefore, in the body care device 1000 according to the embodiment of the present invention, the cover 400 rotates while the backrest frame 310 is rotating, thereby effectively preventing the cover 400 from colliding with the backrest frame 310 during its rotation.

[0267] While the foregoing has been given by way of illustrative embodiments of the invention, all such and other modifications and variations that are obvious to those skilled in the art are considered to fall within the broad scope and limits of the invention as set forth herein. Therefore, such modifications or variations should not be considered as departing from the spirit or scope of the invention, and the invention is intended to cover modifications and variations thereof, provided they fall within the scope of the appended claims and their equivalents.

[0268] This application claims the priority of Korean Patent Application No. 10-2024-0091669, filed on July 11, 2024, and Korean Patent Application No. 10-2024-0137316, filed on October 10, 2024, the entire disclosure of which is incorporated herein by reference.

[0269] 100:Ontology 110: Main body frame 111: Base 112: Guide 112a: First Guide 112b: Second Guide 113: Walking surface 113a: First walking face 113b: Second walking face 114: Upper running surface 115: Front-end boundary component 116: Rear Boundary Component 117: Guiding Surface 120: Body Cover 130: Wheel 200: Seat 210: Seat frame 220: Seat Cover 220a: Top cover 220b: Side cover 221: First Shelving Surface 221a: Buttock support surface 230: Moving component 231: Roller 231a: First roller 231b: Second roller 232: Roller Shaft 233: Boot disk 300: Backrest 310: Backrest frame 311: Axle bracket 312: One end of the backrest frame 313: The other end of the backrest frame 320: Backrest Cover 320a: Front cover 320b: Side cover 321: Second shelving surface 330: Headrest 400: Mask 500: Seat Driver 501:1a point 502:2a point 600: Backrest Drive 601:1b point 602:2b point 700: Mask Driver 701: First Linkage Hinge Shaft 702: Second Linkage Hinge 703: Third Link Hinge Shaft 704: Fourth Link Hinge Shaft 710: First masking link 711: One end of the first shielding link 712: The other end of the first shielding link 720: Second Mask Link 721: One end of the second shielding link 722: The other end of the second shielding link 730: Third Mask Link 731: One end of the third shielding link 732: The other end of the third shielding link 740: Mask Actuator 800: Controller 1000: Body care device CL: Axial connecting line S: Moving segment S1: Front-end, front-end point S2: Backend, backend endpoint X, Y, Z: Direction, Axis

Claims

1. A body care device, comprising: A frame having a plurality of rollers rotatably coupled thereto; a body frame including a travel surface on which the rollers travel in a front-rear direction; a drive unit disposed on the body frame, the drive unit being configured to move the frame in the front-rear direction; and a cover coupled to the frame and configured to form a hip rest surface, wherein the travel surface forms a curved surface with different heights in the front-rear direction, and wherein the travel surface forms an upwardly convex surface in the front-rear direction such that the angle between the hip rest surface and a horizontal plane decreases as the rollers move from the rear end to the front end of the travel surface.

2. The body care device as described in claim 1, wherein, One peak point of the walking surface is located between a front end and a rear end of the walking surface.

3. The body care device as described in claim 2, wherein, The peak point of the walking surface is closer to the front end than the rear end of the walking surface.

4. The body care device as described in claim 1, wherein, The rollers include: a first roller; and a second roller resting on the running surface behind the first roller.

5. The body care device as described in claim 1, wherein, The travel surface includes a first travel surface and a second travel surface spaced apart from each other in the left-right direction, and each of the rollers rests on the first travel surface and the second travel surface.

6. The body care device as described in claim 1, comprising: A guide plate is coupled to the roller, the guide plate having a larger radius than the roller, and the body frame includes a guide surface that is curved downward from the travel surface, the guide surface facing a surface of the guide plate in the left-right direction.

7. The body care device as described in claim 1, wherein, The seat drive includes a linear actuator rotatably coupled to a first point of the body frame and a second point of the seat frame, the linear actuator being configured to extend and retract between the first point and the second point.

8. The body care device as described in claim 1, comprising: A backrest frame, coupled to the seat frame, is rotatable about a frame axis and is configured to be raised or tilted. And a backrest drive, disposed at the seat frame, the backrest drive being configured to rotate the backrest frame about the frame axis.

9. The body care device as claimed in claim 8, comprising a controller configured to simultaneously control the seat drive and the backrest drive such that the backrest tilts when the seat moves forward and rises when the seat moves backward.

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