Personal care device

Abstract

The present disclosure relates to a personal care device, which comprises a base structure, a head structure, a reset member, a displacement detection assembly and a pressure feedback member. The base structure has a first axis; the head structure comprises a head support structure and at least one cutting unit, the head support structure is slidingly connected with the base structure along the first axis through at least two guides; the reset member is at least partially arranged in the base structure and is configured to apply a force to the head structure along the first axis at least when the head structure moves towards the base structure along the first axis; the displacement detection assembly comprises a displacement detection component and a displacement feedback component, one of the displacement detection component and the displacement feedback component is fixed on the base structure, and the other of the displacement detection component and the displacement feedback component moves along the first axis with the head support structure; the technical solution provided by the present disclosure can accurately detect and feedback the shaving pressure, thereby improving the use experience.

Description

Technical Field

[0001] This disclosure relates to the technical field of personal hygiene, and more particularly to a personal care device. Background Technology

[0002] To ensure the razor head makes full contact with the skin, improve shaving efficiency, and prevent skin irritation and damage, it is usually necessary to apply appropriate pressure when shaving with a razor.

[0003] However, traditional razors lack a precise detection and feedback mechanism for shaving pressure, which means that users have difficulty judging whether the pressure they apply is appropriate, thus affecting the overall shaving effect and experience. Utility Model Content

[0004] The purpose of this disclosure is to provide a personal care device that can accurately detect and provide feedback on shaving pressure, thereby improving the user experience.

[0005] According to this disclosure, a personal care device is provided, comprising a base structure, a head structure, a repositioning member, and a displacement detection assembly. The base structure has a first axis; the head structure includes a head support structure and at least one cutting unit, the head support structure being configured to support the at least one cutting unit, and the head support structure being slidably connected to the base structure along the first axis via at least two guide members; the repositioning member is at least partially disposed within the base structure and configured to apply a force to the head structure along the first axis at least when the head structure moves toward the base structure along the first axis; the displacement detection assembly includes a displacement detection component and a displacement feedback component, one of which is fixed to the base structure, and the other of which moves along the first axis following the head support structure.

[0006] The technical solution provided in this disclosure fixes one of the displacement detection component and the displacement feedback component to the base structure, while the other moves along the first axis following the head support structure. Thus, when the cutting unit can be tilted relative to the head support structure, the above structure can achieve the tilting of the cutting unit without causing relative movement of the displacement detection component and the displacement feedback component along the first axis. That is, under the premise that the detected pressure remains unchanged, the cutting unit can be tilted so that the shaving surface of the cutting unit adapts to the orientation of the skin, ensuring the fit between the shaving surface of the cutting unit and the skin, improving the hair cutting effect, and avoiding the influence of the tilt of the cutting unit relative to the head support structure on the pressure detection, thus ensuring the accuracy of shaving pressure detection.

[0007] Meanwhile, the head support structure slides relative to the base structure through the guide member, and the reset member is set between the head support structure and the base structure. The guide member acts as an anti-tilt member to prevent or reduce the tilting or pivoting of the head support structure in directions other than the first axis, and the reset member provides support and reset functions. This allows the displacement detection component and / or displacement feedback component to move basically only along the first axis, improving the detection accuracy of shaving pressure. Furthermore, the reset member only needs to provide support and reset functions, without needing to consider anti-tilt function, thus simplifying the structural design.

[0008] In summary, the above-described structure allows for precise detection of shaving pressure. By incorporating a pressure feedback element into the personal care device, the user can receive direct and accurate feedback on the shaving pressure. This allows the user to refer to the appropriate pressure and perform shaving operations accordingly, ensuring shaving efficiency, preventing shaving injuries, and ultimately improving the user experience. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 A perspective view of a personal care device according to an embodiment of the present disclosure is shown;

[0011] Figure 2 A partial structural half-sectional schematic diagram of a personal care device according to an embodiment of the present disclosure is shown;

[0012] Figure 3 An exploded view of a portion of the structure of a personal care device according to an embodiment of the present disclosure is shown;

[0013] Figure 4 A perspective view of the assembled support partition, guide member, and seal member according to an embodiment of the present disclosure is shown;

[0014] Figure 5 A half-sectional schematic diagram of a head structure according to an embodiment of the present disclosure is shown;

[0015] Explanation of reference numerals in the attached figures:

[0016] 100. Base structure; 101. First axis; 110. Fuselage; 111. Accommodating cavity; 120. Support partition; 130. Cover plate; 140. Movable bracket; 141. Sliding hole; 150. Seal; 160. Drive component; 170. Outer shell; 180. Limiting groove;

[0017] 200. Head structure; 210. Head support structure; 211. Tool holder; 212. Support part; 2121. Rotating part; 2122. Connecting part; 2123. Spherical surface; 2124. Ball head; 220. Cutting unit;

[0018] 300. Guide components;

[0019] 400. Reset component;

[0020] 510. Displacement detection component; 520. Displacement feedback component. Detailed Implementation

[0021] When shaving with a razor, if the pressure applied is too low—for example, if the razor only lightly touches the skin—the blades will struggle to catch hairs deep within the skin's texture or slightly raised areas, resulting in an incomplete shave. This requires repeated shaving to achieve a clean shave, reducing shaving efficiency. Conversely, if the pressure is too high, the razor blades will exert excessive pressure and friction against the delicate skin, easily causing redness, scratches, or minor cuts. For instance, applying too much force to achieve a closer shave can result in red scratches on the skin, which may lead to skin infections. Furthermore, prolonged excessive pressure can stretch the skin, reducing its elasticity and accelerating aging. In short, when shaving, it's crucial to apply appropriate pressure to ensure close contact between the razor head and the skin while avoiding irritation and damage. Therefore, the above problems can only be effectively solved by detecting and providing feedback on shaving pressure so that users can use the appropriate pressure to perform shaving operations based on the feedback.

[0022] Related technologies measure skin pressure, i.e., shaving pressure, by measuring the degree to which the shaving foil is pressed into the head support structure. However, the inward displacement of the shaving foil is limited, and during shaving, the shaving foil often needs to be tilted to adapt the shaving surface to the different curvatures of the skin surface. In other words, the pressure of the skin on the shaving foil not only causes the shaving foil to move relative to the head support structure but also causes the shaving foil to tilt relative to the head support structure. This means that measuring the degree to which the shaving foil is pressed into the head support structure cannot accurately reflect the shaving pressure.

[0023] To address this issue, this disclosure attempts to connect the head support structure to the base structure via multiple suspension arms. This way, regardless of whether the razor blade mesh tilts or moves relative to the head support structure, pressure is transmitted through the head support structure to the suspension arms. The suspension arms deform, causing displacement of the head support structure relative to the base structure. The shaving pressure can then be measured by measuring this displacement. However, after numerous tests, it was found that the suspension arms not only produce displacement in the z-direction but also tilting in the x and y directions perpendicular to the z-direction. The tilting in the y-direction, in particular, severely affects the detection of displacement along the z-direction between the displacement feedback and displacement detection components mounted on the head support and base structures, thus impacting the accurate detection of shaving pressure. To solve this problem, an attempt was made to arrange multiple suspension arms along the z-direction, using these arms to form an anti-tilt guide to prevent the head support structure from tilting in the y-direction via the suspension arms. However, it's understandable that this design requires the suspension arm to not only resist y-axis tilt but also to move and return in the z-axis. In other words, the suspension arm needs both rigidity and elasticity, which undoubtedly increases the difficulty of selecting the suspension arm and raises design and production costs. Furthermore, this method still exhibits x-axis tilt, which will still affect the accuracy of shaving pressure detection to some extent.

[0024] Based on this, this disclosure retains the principle of mounting the displacement detection component and the displacement feedback component on the head support structure and the base structure respectively, so that the displacement change of the head support structure relative to the base structure can be measured regardless of whether the shaving blade mesh is tilted or moved relative to the head support structure, thereby measuring the shaving pressure. However, the suspension arm has been redesigned. Specifically, the suspension arm is replaced with a structure in which a guide column and a spring cooperate. The head support structure slides relative to the base structure through the guidance of the guide column, while the spring is placed between the head support structure and the base structure. Thus, the guide column acts as an anti-tilt component to prevent or reduce the tilting of the head support structure in the x and y directions, and the spring provides support and reset. This allows the displacement detection component and / or the displacement feedback component to move essentially only in the z direction, improving the detection accuracy of the shaving pressure, while also simplifying the structural design and reducing costs.

[0025] Furthermore, this disclosure includes multiple guide pillars, which distribute the force to multiple support points, making the force on the head support structure more even. This reduces jamming of the head support structure during pressing, improves the smoothness of pressing, and at the same time, the head support structure is less prone to shaking or swaying, maintaining a stable contact state and a fixed displacement direction, thereby improving the accuracy of pressure detection.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this disclosure, but not all embodiments.

[0027] like Figures 1 to 3 As shown, this application provides a personal care device, which may include a base structure 100 and a head structure 200. The base structure 100 serves as the main body of the personal care device, facilitating user grip and operation, and may contain a drive component for moving the head structure 200 and an energy source to power the drive component. The base structure 100 may have a first axis 101, with at least a portion of the base structure 100 extending along the first axis 101. The first axis 101 may be a main extension line of the base structure 100, or a line parallel to the main extension line of the base structure 100. For example, the first axis 101 may be a line connecting the midpoints of the cross-sections of the base structure 100 adjacent to the end of the head structure 200. When the end of the base structure 100 adjacent to the head structure 200 is cylindrical, the first axis 101 may be the central axis of the end of the base structure 100 adjacent to the head structure 200, or the first axis 101 may be a line parallel to the central axis of the end of the base structure 100 adjacent to the head structure 200.

[0028] The head structure 200 may include a head support structure 210 and at least one cutting unit 220. The head support structure 210, as the main component of the head structure 200, primarily supports and protects other components within the head structure 200. The head support structure 210 is configured to support at least one cutting unit 220. The head support structure 210 is slidably connected to the base structure 100 along a first axis 101 via at least two guide members 300. The cutting unit 220 performs a shaving action. For example, the head support structure 210 may include an upper housing and a lower housing, with the lower housing detachably connected to the upper housing. The upper housing supports at least one cutting unit 220, and the lower housing is slidably connected to the base structure 100 along the first axis 101 via guide members 300. A transmission assembly may also be provided within the lower housing, allowing a driving component to drive at least one cutting unit 220 to perform a shaving action via the transmission assembly. The number of cutting units 220 can be one, two, or three, etc. The personal care device can be a razor, trimmer, etc., for shaving hair, or a lint remover, etc., and this disclosure does not specifically limit this. Exemplarily, the personal care device is an electric razor with three cutting units 220 arranged in a triangular shape and exposed on the outer surface of the head support structure 210. The shaving surface is not necessarily flat, and the cutting units 220 can converge or diverge in different directions in their natural state, and adapt to the shape of the skin surface being shaved when tilted during operation of the electric razor. Exemplarily, the guide 300 has rigidity to resist tilting of the head support structure 210 in directions other than the first axis 101.

[0029] In this embodiment, the personal care device may further include a reset member 400 and a displacement detection assembly. The reset member 400 is at least partially disposed within the base structure 100 and has elastic properties. The reset member 400 is configured to apply a force along the first axis 101 to the head structure 200 at least when the head structure 200 moves along the first axis 101 toward the base structure 100, thereby driving the head structure 200 to reset or having a tendency to reset. The displacement detection assembly may include a displacement detection component 510 and a displacement feedback component 520. One of the displacement detection component 510 and the displacement feedback component 520 is fixed to the base structure 100, and the other of the displacement detection component 510 and the displacement feedback component 520 moves along the first axis 101 with the head structure 200. That is, when the head structure 200 moves relative to the base structure 100 along the first axis 101, the displacement detection component 510 may move relative to the displacement feedback component 520, or the displacement feedback component 520 may move relative to the displacement detection component 510. In this way, when a shaving operation is performed through the personal care device, the shaving pressure applied to the skin by the head structure 200 reacts to the head structure 200, causing the head structure 200 to move relative to the base structure 100 along the first axis 101 against the force of the reset member 400. This causes a change in the distance between the displacement detection member 510 and the displacement feedback member 520 respectively provided on the head structure 200 and the base structure 100. Thus, the shaving pressure applied to the skin by the head structure 200 is determined by the distance between the displacement detection member 510 and the displacement feedback member 520.

[0030] For example, movement along the first axis 101 may include movement along the first axis 101 or movement in a direction parallel to the first axis 101. That is, the displacement detection component 510 and the displacement feedback component 520 may be located on the first axis 101 or offset from the first axis 101. The displacement detection component 510 may include a circuit board and a distance sensor integrated on the circuit board, wherein the distance sensor may be a laser sensor or a Hall sensor, etc. Taking a Hall sensor as an example, the displacement feedback component 520 may be a magnetic component such as a magnet. When the distance between the Hall sensor and the magnet changes, the magnetic field strength of the Hall sensor also changes, and the output voltage of the Hall sensor also changes. Thus, the shaving pressure can be determined by measuring the change in output voltage. The displacement detection component 510 may be connected to a control component on the base structure 100 via wires, FPC connection cables, etc., so that the control component receives the signal detected by the distance sensor and determines the shaving pressure applied to the skin by the head structure 200 based on the signal.

[0031] In order to provide intuitive feedback to the user on the detected shaving pressure, in this embodiment, the personal care device may also include a pressure feedback element, which is configured to provide feedback on the magnitude of the shaving pressure applied to the skin by the head structure 200 based on the distance between the displacement detection element 510 and the displacement feedback element 520.

[0032] For example, the pressure feedback element can be electrically connected to the control component. After the control component receives the signal detected by the distance sensor and determines the shaving pressure applied to the skin by the head structure 200 based on the signal, it provides feedback on the shaving pressure through the pressure feedback element. The pressure feedback element can be a light-emitting element, displaying different colors to indicate different shaving pressure levels; for example, red indicates excessive shaving pressure, green indicates moderate shaving pressure, and white indicates insufficient shaving pressure. The pressure feedback element can also be a sound-emitting element, providing audible feedback on the shaving pressure level. The pressure feedback element can be located on the base structure 100 or the head structure 200.

[0033] It is worth mentioning that, in this disclosure, one of the displacement detection component 510 and the displacement feedback component 520 is fixed to the base structure 100, while the other moves along the first axis 101 following the head support structure 210. Thus, when the cutting unit 220 can be tilted relative to the head support structure 210, the above structure can achieve tilting of the cutting unit 220 without causing relative displacement between the displacement detection component 510 and the displacement feedback component 520 along the first axis 101. That is, without changing the detected pressure, the cutting unit 220 can be tilted to allow its shaving surface to adapt to the skin's orientation, ensuring the close fit between the shaving surface of the cutting unit 220 and the skin, improving the hair cutting effect, and avoiding the influence of the tilt of the cutting unit 220 relative to the head support structure 210 on pressure detection, ensuring the accuracy of shaving pressure detection. Optionally, the cutting unit 220 can be fixed to the head support structure 210 or integrally formed with the head support structure 210. Meanwhile, the head support structure 210 slides relative to the base structure 100 via the guide member 300. The reset member 400 is positioned between the head support structure 210 and the base structure 100. The guide member 300 acts as an anti-tilt member, preventing or reducing tilting of the head support structure 210 in directions other than the first axis 101. The reset member 400 provides support and reset functions, allowing the displacement detection component 510 and the displacement feedback component 520 to move substantially along the first axis 101, improving the accuracy of shaving pressure detection. Furthermore, the reset member 400 only needs to provide support and reset functions, eliminating the need for anti-tilt functions and simplifying the structural design. In summary, the above structural design allows for accurate detection of shaving pressure. By incorporating a pressure feedback component into the personal care device, accurate shaving pressure can be intuitively fed back to the user, allowing them to reference and perform shaving operations with appropriate pressure, ensuring shaving efficiency, avoiding shaving injuries, and thus improving the user experience.

[0034] In some embodiments, such as Figures 2 to 4 As shown, there are two guide members 300, and the head support structure 210 is slidably connected to the base structure 100 through at least two guide members 300. In this way, the force on the head support structure 210 can be distributed to multiple support points using multiple guide members 300, making the force on the head support structure 210 more even. This reduces the tilting and offset of the head support structure 210 during the pressing process, improving the smoothness of pressing. At the same time, the head support structure 210 is less prone to shaking or wobbling, maintaining a stable contact state and a fixed displacement direction, further improving pressure detection accuracy. In this way, shaving pressure can be accurately detected. With the pressure feedback device installed on the personal care device, the accurate shaving pressure can be intuitively fed back to the user, allowing the user to refer to and perform shaving operations with appropriate pressure, ensuring shaving efficiency, avoiding shaving damage, and thus improving the user experience.

[0035] In some embodiments, the base structure 100 may include a housing 170, and a body housing 110 and a support partition 120 at least partially disposed within the housing 170. The body housing 110 may be shaped for easy gripping by a user. The body housing 110 may have an accommodating cavity 111 with an opening at one end along a first axis 101 adjacent to the head structure 200. The support partition 120 is disposed within the accommodating cavity 111 through the opening, and the support partition 120 is at least restricted to moving along the first axis 101 away from the head structure 200. At least two guide members 300 are at least partially located within the accommodating cavity 111 and are disposed on the support partition 120, thereby supporting the guide members 300. The head support structure 210 is slidably connected to the base structure 100 along the first axis 101 via the at least two guide members 300.

[0036] For example, the support partition 120 can be detachably connected to the inner wall of the accommodating cavity 111 by snap-fit, or the inner wall of the accommodating cavity 111 is provided with an inner boss supporting the side of the support partition 120 away from the head structure 200, or the support partition 120 is fixedly connected to the inner wall of the accommodating cavity 111, or the support partition 120 is provided in the housing 110 by injection molding, so that the support partition 120 is at least restricted to moving along the first axis 101 towards the end away from the head structure 200. For example, when the support partition 120 is installed in the housing 110 by injection molding, or when the support partition 120 is integrally formed with the housing 110, the support partition 120 divides the accommodating cavity 111 into upper and lower cavities. The reset component 400 and guide component 300 can be installed into the upper cavity through the opening located in the upper cavity, and the drive component, energy source and control component can be installed into the lower cavity through the opening located in the lower cavity.

[0037] Optional, such as Figure 3 As shown, the guide member 300 can be assembled onto the support partition 120, or the guide member 300 can be injection molded onto the support partition 120. In this way, the guide member 300 and the support partition 120 can be supported by different materials, so that the support partition 120 has sufficient support strength and the guide member 300 has sufficient lubricity.

[0038] For example, the guide 300 can be a cylindrical structure, thereby improving the smoothness of sliding of the head support structure 210 by utilizing the circular outer surface of the cylindrical structure. The guide 300 can be made of a metal or rubber material with a low coefficient of friction to further improve the smoothness of sliding of the head support structure 210.

[0039] Furthermore, the base structure 100 also includes a seal 150, which surrounds the periphery of the support partition 120 and abuts against the inner wall of the accommodating cavity 111. The seal 150 seals the portion of the accommodating cavity 111 located on the side of the support partition 120 away from the head structure 200. In this way, electronic components that are easily damaged by liquids, such as control components and drive components, can be placed in the portion of the accommodating cavity 111 on the side of the support partition 120 away from the head structure 200, and the seal 150 isolates them from liquid, thus improving their service life.

[0040] In some embodiments, the head support structure 210 may be directly slidably connected to at least two guide members 300. Correspondingly, the reset member 400 is located between the head support structure 210 and the support partition 120.

[0041] In some other embodiments, the head support structure 210 may also be indirectly slidably connected to at least two guide members 300. Specifically, the base structure 100 may further include a cover plate 130 and a movable bracket 140, wherein the cover plate 130 is disposed on the fuselage housing 110 and at least partially covers the opening. The movable bracket 140 is slidably connected to at least two guide members 300, and the movable bracket 140 is at least partially restricted to sliding between the cover plate 130 and the support partition 120. The head support structure 210 is connected to the movable bracket 140, thereby allowing the head support structure 210 to be slidably connected to at least two guide members 300 via the movable bracket 140. Furthermore, although the movable bracket 140 is part of the base structure 100 in this embodiment, it may alternatively be part of the head support structure 210.

[0042] For example, the cover plate 130 can be snapped onto the housing 110. To ensure the stability of the connection between the cover plate 130 and the housing 110, the cover plate 130 can also be locked to the housing 110 with screws. This connection method also facilitates the removal of the cover plate 130 for maintenance and replacement of components within the accommodating cavity 111. The cover plate 130 can also be ultrasonically welded to the housing 110, resulting in a more aesthetically pleasing overall appearance. The head support structure 210 and the movable bracket 140 can be connected by a flexible snap-fit ​​for easy disassembly. A clearance space can be provided in the middle of the cover plate 130, through which the movable bracket 140 can pass to connect with the head support structure 210, and / or, the bottom of the head support structure 210 can pass through the clearance space to connect with the movable bracket 140.

[0043] Specifically, the movable bracket 140 has a sliding hole 141 that mates with the guide member 300. Along the first axis, the length of the guide member 300 within the sliding hole 141 is at least greater than 1 mm. This prevents the guide member 300 from disengaging from the sliding hole 141 during its sliding process, ensuring operational stability. It also ensures that the guide member 300 and the sliding hole 141 have sufficient contact area, preventing the movable bracket 140 from tilting and ensuring pressure detection accuracy.

[0044] For example, when the guide 300 is a cylindrical structure, the sliding hole 141 is a cylindrical hole. The axial length of the guide 300 is set to 5-15mm, and the depth of the sliding hole 141 is set to 3-8mm. When the head structure 200 is not moving along the first axis 101 towards the base structure 100, the length of the guide 300 within the sliding hole 141 is 2-8mm.

[0045] Furthermore, the top surface of the movable bracket 140 may also be provided with an annular groove, and the bottom surface of the head support structure 210 is provided with an annular connecting wall. The annular connecting wall is used to be inserted into the annular groove, and the outer wall surface of the annular connecting wall cooperates with the outer wall surface of the annular groove to restrict the movement of the head structure 200 in the radial direction perpendicular to the first axis 101, so that the shaving pressure can basically only cause displacement changes in the direction of the first axis 101, further ensuring the accuracy of shaving pressure detection.

[0046] Regarding the specific structure of the reset member 400, in some embodiments, such as Figure 2 and Figure 3 As shown, the reset member 400 may include a spring. In this case, the reset member 400 can be disposed between the support partition 120 and the movable bracket 140. One end of the reset member 400 abuts against the movable bracket 140, and the other end of the reset member 400 abuts against the support partition 120. Thus, the spring bears the pressure of the head structure 200 and compresses or extends with the pressure change of the head structure 200, causing the head structure 200 and the movable bracket 140 to undergo displacement changes along the first axis 101. Furthermore, only one spring is required, resulting in a simple structure and convenient installation.

[0047] For example, the bottom surface of the movable bracket 140 and the top surface of the supporting partition 120 can be provided with limiting grooves 180. The two ends of the reset member 400 are respectively located within the two limiting grooves 180, which limit the two ends of the reset member 400, preventing the reset member 400 from deviating or misaligning during multiple extensions and retractions, thus ensuring the stability of the device operation. The spring can be a linear spring, meaning the force on the spring is proportional to the amount of extension and retraction, thus facilitating the calculation of the shaving force and simplifying the program design. Of course, the spring can also be a non-linear spring; no specific limitation is made.

[0048] In some other embodiments, the reset member 400 may also include a first magnetic member and a second magnetic member. The first magnetic member is disposed on the movable bracket 140, and the second magnetic member is disposed on the support partition 120. The first magnetic member and the second magnetic member are disposed opposite to each other and repel each other, so that the first magnetic member and the second magnetic member bear the pressure of the head structure 200. As the pressure of the head structure 200 changes, the magnitude of the partial repulsive force between the first magnetic member and the second magnetic member changes, causing the first magnetic member and the second magnetic member to move closer to each other or further away. As a result, the head structure 200 and the movable bracket 140 undergo displacement changes along the first axis 101.

[0049] Furthermore, the axes of the reset component 400, the support partition 120, and the movable bracket 140 coincide with the axis of the base structure 100, so that the reset component 400 is supported in the middle position of the support partition 120 and the middle position of the movable bracket 140, so that the force on each component is more even during movement, reducing problems such as shaking, jamming, and wear caused by eccentric or asymmetrical force, and further improving the smoothness of the head structure 200 sliding along the first axis 101 through at least two guides 300.

[0050] Furthermore, at least two guide members 300 are arranged in a circular array around the first axis 101, so that the at least two guide members 300 can be subjected to more even force during the movement of the movable support 140, reducing the possibility of jamming between the movable support 140 and the guide members 300, and further improving the smoothness of the head structure 200 sliding along the first axis 101 through the at least two guide members 300.

[0051] In some embodiments, the displacement feedback component 520 is disposed on the movable bracket 140, so that when the head structure 200 moves the movable bracket 140, it can move the displacement feedback component 520 together, so that the displacement feedback component 520 moves along the first axis 101 with the head support structure 210 of the head structure 200.

[0052] For example, the displacement feedback component 520 can be formed within the movable bracket 140 by in-mold injection molding. The displacement feedback component 520 can also be fixed to the movable bracket 140 by assembly.

[0053] In some embodiments, the displacement detection component 510 is disposed within the accommodating cavity 111, and the displacement detection component 510 is located on the side of the support partition 120 away from the head structure 200. Thus, when a seal 150 is provided on the support partition 120, the seal 150 can also waterproof the displacement detection component 510, reducing the possibility of damage to the displacement detection component 510.

[0054] In some embodiments, the base structure 100 may further include a drive component 160, which is at least partially located within the accommodating cavity 111 and on the side of the support partition 120 away from the head structure 200. Thus, when a seal 150 is provided on the support partition 120, the seal 150 can also waterproof the drive component 160, reducing the possibility of damage to the drive component 160. Furthermore, the drive component 160 being mounted on the housing 110 can reduce the volume of the head structure 200, thereby optimizing the overall shape design of the personal care device. Correspondingly, the output end of the drive component 160 sequentially passes through the support partition 120, the reset member 400, and the movable bracket 140 and couples with a transmission assembly within the head structure 200 to drive at least one cutting unit 220 to perform a shaving operation. Simultaneously, the output end of the drive component 160 passes through the reset member 400; when the reset member 400 is a spring, the output end of the drive component 160 can also limit the spring to prevent misalignment and ensure the operational stability of the device. In addition, a seal may be provided between the output end of the drive component 160 and the support partition 120 to seal the gap between them.

[0055] For example, the drive component 160 can be a motor, and correspondingly, the output end of the drive component 160 is the output shaft of the motor. The displacement detection component 510 can be annular, and the output end of the drive component 160 can also pass through the displacement detection component 510. Of course, the displacement detection component 540 can also be of other shapes, and the output end of the drive component 160 is offset from the displacement detection component 540.

[0056] The aforementioned cutting unit 220 can be tilted relative to the movable support 140, or in other words, the cutting unit 220 can be tilted relative to the base structure 100 without causing relative displacement of the displacement detection component 510 and the displacement feedback component 520 along the first axis 101. Thus, under the premise of constant detected pressure, the tilting of the cutting unit 220 allows the shaving surface of the cutting unit 220 to adapt to the orientation of the skin, ensuring the close fit between the shaving surface of the cutting unit 220 and the skin, improving the hair cutting effect, and avoiding the influence of the tilting of the cutting unit 220 relative to the head support structure 210 on pressure detection, ensuring the accuracy of shaving pressure detection.

[0057] In some embodiments, the cutting unit 220 may be tilted relative to the head support structure 210 so that the cutting unit 220 may be tilted relative to the movable bracket 140.

[0058] Specifically, such as Figure 5As shown, the head support structure 210 has a blade holder 211 and a support portion 212, the support portion 212 being connected to the movable bracket 140. The cutting unit 220 is installed within the blade holder 211, and the cutting unit 220 can pivot at a certain angle relative to the blade holder 211, and / or the blade holder 211 can pivot at a certain angle relative to the support portion 212, thereby allowing the cutting unit 220 to tilt relative to the movable bracket 140. The aforementioned upper and lower housings constitute the support portion 212, and the blade holder 211 is mounted on the upper housing.

[0059] In some other embodiments, such as Figure 5 As shown, a portion of the head support structure 210 can be tilted relative to the movable bracket 140, thereby causing the cutting unit 220 located on the portion of the head support structure 210 to tilt relative to the movable bracket 140, so that the cutting unit 220 can tilt relative to the movable bracket 140.

[0060] Specifically, the support portion 212 of the head support structure 210 may include a rotating portion 2121 and a connecting portion 2122. The blade holder 211, which houses the cutting unit 220, is mounted on the rotating portion 2121. The connecting portion 2122 is connected to the movable bracket 140. A spherical surface 2123 is provided on the connecting portion 2122. A ball head 2124, which mates with the spherical surface 2123, may be provided in the middle of the rotating portion 2121. This allows the rotating portion 2121 to slide circumferentially along the first axis 101 and circumferentially along an axis perpendicular to the first axis 101 relative to the connecting portion 2122 through the engagement of the spherical surface 2123 and the ball head 2124. Specifically, the circumferential sliding of the rotating portion 2121 along an axis perpendicular to the first axis 101 is manifested as the rotating portion 2121 tilting relative to the connecting portion 2122, i.e., the rotating portion 2121 tilting relative to the movable bracket 140, thereby allowing the cutting unit 220 to tilt relative to the movable bracket 140. The aforementioned annular connecting wall is part of the connecting portion 2122, and portions of the upper and lower shells constitute the rotating portion 2121, while another portion of the lower shell constitutes the connecting portion 2122.

[0061] It should be noted that when the rotating part 2121 can be tilted relative to the movable support 140, the cutting unit 220 can be tilted relative to the rotating part 2121, or the cutting unit 220 can be fixedly or movably connected relative to the rotating part 2121.

[0062] The terms "upper" and "lower" used in this disclosure are used to describe the relative positional relationship of the various structures in the accompanying drawings. They are only for the purpose of clarity of description and are not intended to limit the scope of implementation of this disclosure. Changes or adjustments to the relative relationships without substantially altering the technical content should also be considered as part of the scope of implementation of this disclosure.

[0063] It should be noted that, in this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] Furthermore, in this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit them. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A personal care device, characterized in that, The personal care device includes: The base structure has a first axis; A head structure includes a head support structure and at least one cutting unit, the head support structure being configured to support the at least one cutting unit, and the head support structure being slidably connected to the base structure along a first axis via a guide member. A reset member, at least partially disposed within the base structure, is configured to apply a force to the head structure along the first axis at least when the head structure moves toward the base structure along the first axis; The displacement detection assembly includes a displacement detection component and a displacement feedback component, one of which is fixed to the base structure, and the other of which moves along the first axis following the head support structure.

2. The personal care device according to claim 1, characterized in that, The guide member has rigidity, and the reset member has elasticity.

3. The personal care device according to claim 2, characterized in that, The guide member has at least two parts, and the head support structure is slidably connected to the base structure through at least two of the guide members.

4. The personal care device according to claim 3, characterized in that, The base structure includes an outer shell, and a fuselage housing and a support partition, at least partially disposed within the outer shell, wherein... The fuselage housing has an accommodating cavity, and the accommodating cavity has an opening at one end along the first axis adjacent to the head structure; The support partition is disposed within the accommodating cavity through the opening and is at least restricted to moving along the first axis toward one end away from the head structure. The at least two guide members are at least partially located within the accommodating cavity and are disposed on the support partition.

5. The personal care device according to claim 3, characterized in that, The base structure includes an outer shell, and a fuselage housing and a support partition, at least partially disposed within the outer shell, wherein... The fuselage housing and the supporting partition are integrally formed. The fuselage housing has an accommodating cavity. The at least two guide members are at least partially located in the accommodating cavity and are disposed on the supporting partition.

6. The personal care device according to claim 4, characterized in that, The guide component is assembled onto the support partition; or... The guide component is installed on the support partition by injection molding.

7. The personal care device according to claim 4, characterized in that, The base structure also includes a sealing element, which surrounds the periphery of the support partition and abuts against the inner wall of the accommodating cavity.

8. The personal care device according to any one of claims 4 to 7, characterized in that, The head support structure is directly slidably connected to the at least two guide members.

9. The personal care device according to any one of claims 4 to 7, characterized in that, The base structure also includes a cover plate and a movable support, wherein... The cover plate is disposed on the fuselage housing and at least partially covers the opening; The movable bracket is slidably connected to the at least two guide members, and the movable bracket is at least partially restricted to sliding between the cover plate and the support partition. The head support structure is connected to the movable bracket.

10. The personal care device according to claim 9, characterized in that, The reset component includes a spring, and is located between the support partition and the movable bracket. One end of the reset component abuts against the movable bracket, and the other end of the reset component abuts against the support partition.

11. The personal care device according to claim 9, characterized in that, The reset component includes a first magnetic component and a second magnetic component. The first magnetic component is disposed on the movable bracket, and the second magnetic component is disposed on the support partition. The first magnetic component and the second magnetic component repel each other.

12. The personal care device according to claim 9, characterized in that, The axes of the reset component, the support partition, and the movable bracket coincide with the first axis; The at least two guide members are arranged in a circular array around the first axis.

13. The personal care device according to claim 9, characterized in that, The displacement feedback component is mounted on the movable support.

14. The personal care device according to claim 13, characterized in that, The displacement detection component is disposed within the accommodating cavity, and the displacement detection component is located on the side of the support partition away from the head structure.

15. The personal care device according to claim 14, characterized in that, The base structure also includes a drive component; The drive component is at least partially located within the accommodating cavity and on the side of the support partition away from the head structure. The output end of the drive component passes sequentially through the support partition, the reset member, and the movable bracket and is coupled to a transmission assembly within the head structure to drive the at least one cutting unit to perform a shaving operation via the transmission assembly.

16. The personal care device according to claim 1, characterized in that, The personal care device also includes a pressure feedback element; The pressure feedback element is configured to provide feedback on the shaving pressure applied to the skin by the head structure based on the distance between the displacement detection element and the displacement feedback element.

17. The personal care device according to claim 16, characterized in that, The pressure feedback element is a light-emitting element or a sound-emitting element; and / or, The pressure feedback element is disposed on the base structure or the head structure.

18. The personal care device according to claim 9, characterized in that, The movable bracket has a sliding hole that mates with the guide member, and along the first axis, the length of the guide member located within the sliding hole is at least greater than 1 mm.

19. The personal care device according to claim 9, characterized in that, The cutting unit can tilt relative to the movable support without causing relative displacement between the displacement detection component and the displacement feedback component along the first axis.

Images