Floating Rotating Structure, Personal Care Device and Massager

Abstract

A floating and rotating structure, a personal care device, and a massager. The floating and rotating structure includes a first hinge having a through first fitting groove; a second hinge, the top of which has a fitting portion disposed in the first fitting groove, and a limiting structure for preventing relative rotation and separable along the central axis direction of the first fitting groove is provided between the first fitting groove and the fitting portion, and a through first central hole is provided in the fitting portion; an elastic member is disposed through the first fitting groove and the first central hole of the second hinge, and both ends of the elastic member can respectively abut against two external members connected to the first hinge and the second hinge. In the above structure, when subjected to an external force, the limiting structure between the first hinge and the second hinge is separated, and the elastic member is compressed so that the first hinge drives the external member to rotate 360°. When the external force decreases, the elastic member elastically returns and moves upward, thereby realizing up and down floating. When applied to a personal care device or a massager, it can bring a more comfortable use experience to the user.

Description

Technical Field

[0001] The invention relates to the technical field of nursing and massage, and in particular to a floating rotating structure, a personal nursing device and a massager. Background Art

[0002] In people's daily life, the blade of commonly used personal care devices, such as razors, is in direct contact with the face. Therefore, the movement of the blade directly affects the user's experience. In the current razor structure, when the blade moves on the skin surface, there is a stiff conflict between the blade and the skin, and the shaving force is completely adjusted by the grip of the human hand. When the blade feels that the contact between the blade and the skin is tight, the blade is pressed a little loose by the human hand, otherwise, it is pressed a little tight. During the entire shaving process, the hand is in a tense state. After shaving, there may be a sore feeling, and the user experience is extremely poor. Similarly, in commonly used massage instruments, such as face massagers and neck massagers, the massage head is also in direct contact with the face or neck, and the tightness of the contact is also adjusted by the user's pressing force. In this way, although the face or neck is relaxed and massaged, the hands are sore. Therefore, a comfortable and flexible transmission structure is urgently needed to improve such products, improve the adaptive ability between the razor head or massage head and the skin, and enhance the user experience. Summary of the invention

[0003] The purpose of the present invention is to provide a floating rotating structure, aiming to solve the technical problems in the prior art that personal care devices or massagers are not flexible enough and have poor user experience when in use.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a floating rotating structure, comprising:

[0005] A first hinge, wherein the first hinge has a first mating groove extending therethrough;

[0006] The second hinge has a matching portion disposed in the first matching groove at the top, a limiting structure is provided between the first matching groove and the matching portion to prevent relative rotation and can be separated along the central axis direction of the first matching groove, and a first central hole is provided in the matching portion and passes through to the bottom of the second hinge;

[0007] The elastic member is inserted into the first matching groove and the first center hole of the second hinge, and the two ends of the elastic member can respectively abut against two external members respectively connected to the first hinge and the second hinge.

[0008] Furthermore, the limiting structure includes a first limiting plane provided on the outer surface of the matching portion and a second limiting plane provided in the first matching groove and capable of being fitted with the first limiting plane.

[0009] Further, a positioning block is provided in the first fitting groove, and the second limiting plane is provided on the inner side of the positioning block and faces the center of the first fitting groove.

[0010] Further, the limiting structure includes a limiting hole provided in the first fitting groove and a limiting block provided on the outer surface of the fitting portion that can extend into the limiting hole; alternatively, the limiting structure includes a limiting block provided in the first fitting groove and a limiting hole provided on the outer surface of the fitting portion for the limiting block to extend into.

[0011] Further, the first fitting groove has a first spherical arc surface, and the surface of the fitting portion has a second spherical arc surface that cooperates with the first spherical arc surface; alternatively, the first fitting groove has a first plane, and the surface of the fitting portion has a second plane that cooperates with the first plane.

[0012] Further, one of the external components is a housing, the housing has a mounting hole, the first hinge is fixed to the mounting hole through a hinge cover plate, and the top end of the elastic member abuts against the hinge cover plate.

[0013] Further, the other external component is a support member, the bottom of the second hinge passes through the first hinge and is installed in the support member, and the other end of the elastic member abuts against the support member.

[0014] Further, the second hinge is fixedly connected to the support member through a connecting member.

[0015] Further, a second fitting groove is provided on the fitting portion, at least one first connection hole that penetrates is provided on the wall of the second fitting groove, at least one second connection hole that corresponds to and penetrates the first connection hole is provided on the wall of the first fitting groove, a mounting post is provided in the support member, and the connecting member is a screw that passes through the first connection hole and the second connection hole and extends into the mounting post.

[0016] Further, the bottom of the second hinge has a connecting portion, and a positioning structure for limiting the connecting member is provided at a position corresponding to the first connection hole on the connecting portion.

[0017] Further, the positioning structure includes a positioning boss provided on the outer wall of the connecting portion through which the connecting member can pass, and a recess located below the positioning boss and arranged along the height direction of the connecting portion for accommodating the connecting member.

[0018] Further, the top of the support member has a stepped surface that is recessed inward, a second central hole that penetrates the support member is provided on the stepped surface, the mounting post is provided on the stepped surface, a ring-shaped protrusion is provided on the stepped surface and at the edge of the second central hole, and the bottom of the elastic member is sleeved on the ring-shaped protrusion.

[0019] Further, at least one stopper is provided at the edge of the mounting hole. An annular flange is formed by outward extension of the edge of the first fitting groove. The annular flange is placed at the edge of the mounting hole. A first avoidance groove is provided on the annular flange corresponding to the stopper. The hinge cover plate is covered in the first fitting groove, and at least one locking block that can be locked at the stopper is provided on the edge of the hinge cover plate.

[0020] Further, a card slot for the locking block to be inserted when horizontally rotating is provided between the stopper and the edge of the mounting hole. A limiting block for resisting the locking block is provided on one side of the card slot. A second avoidance groove for avoiding the stopper is provided on the edge of the hinge cover plate, and the locking block is provided at the second avoidance groove.

[0021] Further, there are multiple stoppers, and the multiple stoppers are evenly distributed on the edge of the mounting hole; there are multiple locking blocks, and the multiple locking blocks are evenly distributed on the edge of the hinge cover plate.

[0022] Further, at least one positioning post is further provided on the edge of the mounting hole. A semi-circular positioning hole for at least one of the positioning posts to be inserted when the annular flange rotates is provided on the annular flange.

[0023] Further, there are multiple positioning posts and multiple stoppers. The multiple positioning posts and the multiple stoppers are alternately spaced and evenly distributed on the edge of the mounting hole.

[0024] Further, a flexible bracket wrapped around the second hinge is further included. The top of the flexible bracket is mounted on the bottom of one of the external components, and the bottom of the flexible bracket is sleeved on the outer wall of the other external component.

[0025] The present invention also provides a personal care device, including a body and a cutting unit provided on the body. The cutting unit includes the floating rotation structure described above.

[0026] The present invention also provides a massager, including a massager body and a massage head unit provided on the massager body. The massage head unit includes the floating rotation structure described above.

[0027] The beneficial effects of the present invention:

[0028] In the present invention, the first hinge and the second hinge are in a mating state through the first mating groove and the mating portion. When the limiting structure is not provided, the first hinge and the second hinge can rotate relative to each other. In this way, during specific applications, after powering on, the two external components respectively connected to the first hinge and the second hinge will rotate relative to each other, which is not convenient for actual operation. Therefore, it is necessary to provide a limiting structure between the two mating parts, that is, between the first hinge and the second hinge. However, when a fixed limiting structure that keeps the relative position between the first hinge and the second hinge unchanged is provided, the first hinge and the second hinge cannot rotate, and in this way, the flexibility of the two external components respectively connected to the first hinge and the second hinge becomes poor, and the user experience is bad. In the embodiment of the present invention, an elastic member is provided between the first hinge and the second hinge. By pressing the first hinge, the limiting structure is separated in the axial direction of the first mating groove, and the separated limiting structure is re-mated by the elastic restoring force of the elastic member. In this way, during use, according to different external forces, the limiting structure is continuously separated and mated alternately, so that the first hinge and the second hinge can rotate relative to each other or be relatively stationary. And during the separation and mating process, floating in the stretching and shrinking directions is achieved through the stretching and shrinking of the elastic member. When this floating rotation structure is applied to a product, a good user experience can be obtained for the user. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic structural diagram of the shaver provided in the first embodiment of the present invention;

[0031] Figure 2 Side view of the cutting unit of the shaver provided in the first embodiment of the present invention;

[0032] Figure 3 Longitudinal sectional view of the cutting unit of the shaver provided in the first embodiment of the present invention;

[0033] Figure 4 Schematic structural diagram of the first hinge in the floating rotation structure of the shaver provided in the first embodiment of the present invention;

[0034] Figure 5 Schematic structural diagram of the second hinge in the floating rotation structure of the shaver provided in the first embodiment of the present invention;

[0035] Figure 6 Exploded view of the floating rotation structure of the shaver provided in the first embodiment of the present invention;

[0036] Figure 7 Top view of the assembly of the first hinge and the second hinge in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0037] Figure 8 Longitudinal sectional view after the assembly of the first hinge and the second hinge in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0038] Figure 9 Schematic structural view of the support member in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0039] Figure 10 Schematic structural view of the hinge cover in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0040] Figure 11 Exploded view before the assembly of the hinge cover and the housing in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0041] Figure 12 Top view of the assembly of the hinge cover and the housing in the floating and rotating structure of the razor provided in the first embodiment of the present invention;

[0042] Figure 13 Exploded view of the cutting unit in the razor provided in the first embodiment of the present invention;

[0043] Figure 14 For Figure 11 Enlarged view at A in;

[0044] Figure 15 Exploded view of the cutting unit in the razor provided in the second embodiment of the present invention;

[0045] Figure 16 Longitudinal sectional view of the cutting unit in the razor provided in the second embodiment of the present invention;

[0046] Figure 17 Schematic structural view of the facial massager provided in the third embodiment of the present invention;

[0047] Figure 18 Partial sectional view inside the massage head in the facial massager provided in the third embodiment of the present invention;

[0048] Wherein, each reference numeral in the figure:

[0049] 100 - Body; 110 - Massage device body; 120 - Massage head unit; 121 - Massage head; 200 - Cutting unit; 210 - Flexible bracket; 211 - Ring-shaped convex edge; 220 - Limiting structure; 300 - Support; 310 - Mounting post; 320 - Step surface; 330 - Second central hole; 340 - Second ring-shaped protrusion; 350 - Ring-shaped card slot; 400 - Shaving unit; 410 - Housing; 411 - Mounting hole; 412 - Stopper; 413 - Positioning post; 414 - Card slot; 415 - Limiting block; 420 - Cover plate; 430 - Bracket; 440 - Blade assembly; 500 - First hinge; 510 - First mating groove; 511 - Second limiting plane; 512 - Positioning block; 513 - Second connection hole; 514 - Ring-shaped flange; 515 - First relief groove; 516 - Semi-circular positioning hole; 517 - First spherical arc surface; 518 - First plane; 600 - Second hinge; 610 - Mating part; 611 - First limiting plane; 612 - Second plane; 620 - Second mating groove; 621 - First central hole; 622 - First connection hole; 630 - Connection part; 640 - Positioning boss; 641 - Semi-circular hole; 650 - Depression; 700 - Hinge cover plate; 710 - First ring-shaped protrusion; 720 - Locking block; 730 - Second relief groove; 800 - Elastic member; 900 - Connecting member. Detailed implementation mode

[0050] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0052] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality of" means two or more unless otherwise specifically defined.

[0053] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] A floating rotation structure provided by an embodiment of the present invention includes a first hinge with a through first fitting groove therein; a second hinge having a fitting portion disposed in the first fitting groove at its top, a limiting structure for preventing relative rotation and separable along the central axis direction of the first fitting groove is provided between the first fitting groove and the fitting portion, and a first central hole penetrating to the bottom of the second hinge is provided in the fitting portion; an elastic member is disposed through the first fitting groove and the first central hole of the second hinge, and both ends of the elastic member can respectively abut against two external members connected to the first hinge and the second hinge respectively.

[0055] In the embodiment of the present invention, the first hinge and the second hinge are in a fitting state through the first fitting groove and the fitting portion. When the limiting structure is not provided, the first hinge and the second hinge can rotate relative to each other. Thus, in specific applications, after power-on, relative rotation of two external members respectively connected to the first hinge and the second hinge will occur, which is not convenient for actual operation; therefore, it is necessary to provide a limiting structure at the two fitting parts, that is, between the first hinge and the second hinge. However, after a fixed limiting structure for keeping the relative position between the first hinge and the second hinge unchanged is provided, the first hinge and the second hinge cannot rotate, and thus the flexibility of the two external members respectively connected to the first hinge and the second hinge becomes poor, and the use experience is bad. In the embodiment of the present invention, that is, an elastic member is provided between the first hinge and the second hinge. By pressing the first hinge, the limiting structure is separated in the axial direction of the first fitting groove, and the separated limiting structure is re-fitted by the elastic restoring force of the elastic member. Thus, during use, according to different external forces, the limiting structure is continuously separated and re-fitted alternately, so that relative rotation or relative rest between the first hinge and the second hinge is realized, and during the separation and re-fitting process, floating in the stretching and shrinking directions is realized through the stretching and shrinking of the elastic member. When this floating rotation structure is applied to a product, a good use experience can be obtained by the user.

[0056] The floating and rotating structure provided by this embodiment has the above-mentioned rotating and floating effects, can well contact with the skin surface, and has a good self-adaptive effect with the skin surface. Therefore, it can be widely applied to various personal care devices or massagers. Specifically, the personal care device can be a razor, hair clipper, hair remover, etc. These products all include a body and a cutting unit provided on the body for performing related care functions. The above-mentioned floating and rotating structure can be applied in the cutting unit. The massager can be a facial massager, facial beauty instrument, head massager, neck massager, etc. These massage products all include a massager body and a massage head unit provided on the massager body. The above-mentioned floating and rotating structure can be applied to the massage head unit.

[0057] In practical applications, different embodiments can be used to implement the floating and rotating structure. The floating and rotating structure will be described in detail below in combination with specific products.

[0058] Embodiment 1

[0059] Reference Figures 1 to 3 As shown in [reference figure], the personal care device provided by Embodiment 1 of the present invention is a razor. Specifically, the razor includes a body 100 and a cutting unit 200 provided on the body 100. Among them, the cutting unit 200 includes a support member 300, a shaving unit 400 provided above the support member 300, a first hinge 500 provided in the shaving unit 400, a second hinge 600 cooperating with the first hinge 500, and an elastic member 800. The top end of the second hinge 600 cooperates with the first hinge 500, and a rotation-preventing limiting structure 220 is provided between them. The bottom end of the second hinge 600 is fixedly connected to the support member 300. Specifically, the first hinge 500 has a first fitting groove 510 inside. The first fitting groove 510 has a first spherical arc surface 517. The center of the first spherical arc surface 517 is O. The first fitting groove 510 has a central axis L. The bottom of the first fitting groove 510 penetrates through the first hinge 500, that is, the first hinge 500 is hollow.

[0060] For the second hinge 600, its top has a fitting portion 610 placed inside the first fitting groove 510. The fitting portion 610 is spherical. The outer wall surface of the fitting portion 610 matches the arc surface of the first spherical arc surface 517. In this way, when the fitting portion 610 is placed in the first fitting groove 510, the outer wall surface of the fitting portion 610 can better fit with the first spherical arc surface 517. A limiting structure 220 for preventing relative rotation is provided between the fitting portion 610 and the first fitting groove 510. A second fitting groove 620 is provided inside the fitting portion 610. A first central hole 621 penetrating to the bottom of the second hinge 600 is provided at the bottom of the second fitting groove 620. The bottom of the second hinge 600 passes through the first hinge 500 and extends into and is fixed in the support member 300. In this way, the second hinge 600 is fixedly connected to the support member 300 as a whole.

[0061] Further, in this embodiment, the shaving unit 400 includes a housing 410 and a hinge cover plate 700. The housing 410 is generally in a three-lobe shape with a mounting hole 411 at the center. The first hinge 500 is fixed to the mounting hole 411 through the hinge cover plate 700. The second hinge 600 cooperating with the first hinge 500 extends out at the mounting hole 411 and is connected to the support member 300. The top end of the elastic member 800 abuts against the hinge cover plate 700. In this embodiment, the first hinge 500 is fixed to the mounting hole 411 through the hinge cover plate 700. In other embodiments, the hinge cover plate 700 may be omitted, and the first hinge 500 may be fixed to the mounting hole 411 by its own structural design or other parts.

[0062] The elastic member 800 passes through the first central hole 621, the second mating groove 620 and the first mating groove 510 of the second hinge 600. The top end of the elastic member 800 abuts against the bottom of the hinge cover plate 700, and the bottom end of the elastic member 800 abuts against the top of the support member 300.

[0063] In the non-working state, the elastic force of the elastic member 800 pushes the hinge cover plate 700 and the support member 300 towards both ends along the central axis L respectively, so that the first hinge 500 fixedly connected to the hinge cover plate 700 and the second hinge 600 fixedly connected to the support member 300 are more closely fitted with each other in a spherical arc surface.

[0064] When the razor is working and the shaving unit 400 contacts the face and is squeezed by the force of the face, the shaving unit 400 drives the hinge cover plate 700 to move downward to squeeze the elastic member 800. At the same time, the first hinge 500 also moves downward. When the downward force is greater than the elastic force of the elastic member 800, the elastic member 800 is compressed. During this process, the anti-rotation limiting structure 220 between the first hinge 500 and the second hinge 600 is separated so that the hinge cover plate 700 and the shaving unit 400 can rotate around the center O of the first spherical arc surface 517 with the first hinge 500, thereby realizing the 360° rotation of the shaving unit 400. During the rotation process, the elastic member 800 plays a flexible connection role between the shaving unit 400 and the support member 300, making the 360° rotation of the shaving unit 400 smoother; when the shaving unit 400 acts on different parts of the face, the external force acting on the razor by the face changes. When the external force applied to the shaving unit 400 decreases, that is, the external force is less than the elastic force of the elastic member 800, the elastic member 800 elastically returns and pushes the hinge cover plate 700 upward. The first hinge 500 and the shaving unit 400 move upward, and the limiting structure 220 between the first hinge 500 and the second hinge 600 is re-mated to prevent the relative rotation of the first hinge 500 and the second hinge 600. During this process, the shaving unit 400 floats up and down along the central axis L, and can better adapt to the change of the face curve, avoiding hard contact with the face, thereby bringing a more comfortable shaving experience to the user.

[0065] Furthermore, to facilitate the limitation of the relative rotation between the first hinge 500 and the second hinge 600 and also to ensure that when the first hinge 500 is separated from the second hinge 600, the limiting structure 220 does not obstruct the rotation of the first hinge 500, in this embodiment, the limiting structure 220 is designed simply and ingeniously, which can prevent the rotation in the circumferential direction and does not affect the separation in the axial direction.

[0066] Specifically, referring to Figures 4 to 8 , the limiting structure 220 includes a first limiting plane 611 provided on the outer wall surface of the mating portion 610 and a second limiting plane 511 provided in the first mating groove 510 and capable of fitting with the first limiting plane 611. Since both the first spherical arc surface 517 and the outer wall surface of the mating portion 610 are spherical arc surfaces, they can rotate relative to each other without friction and resistance when directly mating. However, the first limiting plane 611 and the second limiting plane 511 are in planar contact. When the first hinge 500 rotates relative to the mating portion 610, the first limiting plane 611 and the second limiting plane 511 cannot rotate due to the frictional force between the two planes, thereby achieving circumferential limitation. At the same time, the planar contact in the axial direction does not prevent the upward or downward movement of the first hinge 500. In other embodiments, the limiting structure may also include a limiting hole provided in the first mating groove and a limiting block provided on the outer surface of the mating portion and capable of extending into the limiting hole. The separation along the axis of the first mating groove and the relative rotation after separation can also be achieved through the cooperation of the limiting hole and the limiting block. Of course, the positions of the limiting hole and the limiting block can also be interchanged, that is, the limiting structure includes a limiting block provided in the first mating groove and a limiting hole provided on the outer surface of the mating portion for the limiting block to extend into.

[0067] Specifically, the first limiting plane 611 can be regarded as a plane formed by longitudinally cutting the outer wall surface of the mating portion 610. Since the first spherical arc surface 517 is an arc surface, to facilitate the setting of the second limiting plane 511, a positioning block 512 is provided in the first mating groove 510, and the second limiting plane 511 is provided on the inner side of the positioning block 512 facing the center of the first mating groove 510. In this embodiment, the positioning block 512 has a cubic block structure, and the second limiting plane 511 is one of the inner surfaces of the cube.

[0068] In this embodiment, there are three first limiting planes 611, and the three first limiting planes 611 are evenly distributed on the outer wall surface of the fitting portion 610; there are three second limiting planes 511, and the three second limiting planes 511 are evenly arranged in the first fitting groove 510. Through the fitting of the three groups of planes, the first hinge 500 and the second hinge 600 can be well limited. Moreover, since the top surface of the cubic positioning block 512 is also a plane, in this way, a triangular arrangement is formed among the three positioning blocks 512, and the top surfaces of the three positioning blocks 512 form a stable supporting surface for more reliably supporting the hinge cover plate 700. Of course, the number of the first limiting plane 611 and the second limiting plane 511 can also be one, two, four, or more, etc.

[0069] In this embodiment, when the second hinge 600 and the support member 300 are fixedly connected as a whole, they are assembled and fixed by the connecting member 900. Through the assembly of the connecting member 900, the fixed connection between the second hinge 600 and the support member 300 is detachable. In this way, it is convenient for disassembly and repair, and also convenient for assembly during product production. Of course, on the premise of ensuring the reliable connection between the second hinge 600 and the support member 300, in other embodiments, other detachable fixed connection methods, such as snap connection, etc., can also be adopted.

[0070] Specifically, a first connection hole 622 is provided in the second fitting groove 620 of the fitting portion 610 of the second hinge 600, and a second connection hole 513 corresponding to the first connection hole 622 is provided in the first fitting groove 510 that fits with the fitting portion 610. The connecting member 900 is specifically a screw. And an installation post 310 is provided in the support member 300, and a screw hole (not labeled in the figure) is provided in the installation post 310. The screw passes through the first connection hole 622 and the second connection hole 513 and is screwed into the screw hole of the installation post 310. Using the method of screwing the screw to fix the second hinge 600 has a simple structure, is convenient for processing, and is also easy to assemble.

[0071] As Figure 9 shown, the support member 300 is generally in a cylindrical structure, and its top has a stepped surface 320 that is recessed inward. A second central hole 330 that penetrates the support member 300 is provided on the stepped surface 320, and the installation post 310 is provided on the stepped surface 320. In this way, the depth of the downward recess of the stepped surface 320 fills the height of the installation post 310, avoiding the installation post 310 protruding from the top surface of the support member 300 and occupying more space or forming a connection gap.

[0072] Further, there are three first connection holes 622, correspondingly three second connection holes 513, three mounting posts 310, and three connecting members 900. The three connecting members 900 are arranged in a triangle to fixedly connect the second hinge 600 and the support member 300 more firmly. Moreover, for the second hinge 600, the number of first limiting planes 611 provided thereon is the same as that of the first connection holes 622, both being three. The first connection holes 622 and the first limiting planes 611 are alternately arranged at intervals. That is, one first connection hole 622 is provided between two first limiting planes 611, and there is a first limiting plane 611 between two first connection holes 622.

[0073] In this embodiment, the top of the second hinge 600 is a mating portion 610, and the bottom has a connecting portion 630. The connecting portion 630 is specifically a cylindrical structure. The diameter of the cylinder is slightly larger than the bottom diameter of the mating portion 610. Since the inner wall surface of the second spherical arc surface in the ball head gradually increases from bottom to top, the diameter of the cylinder is designed to be slightly larger than the bottom diameter of the mating portion 610. In this way, on the one hand, the small size of the second hinge 600 part is maintained, and on the other hand, when the connecting member 900 passes through the mating portion 610 from the first connection hole 622, it can pass through the connecting portion 630, so that the mating portion 610 and the connecting portion 630 of the second hinge 600 are connected into a whole through the connecting member 900, avoiding the unstable situation caused by the separation of the connecting portion 630 when only the mating portion 610 is connected to the support member 300. Specifically, a positioning structure for limiting the connecting member 900 is provided at the position corresponding to the first connection hole 622 on the connecting portion 630.

[0074] Specifically, as Figure 5 shown, the positioning structure includes a positioning boss 640 provided on the outer wall of the connecting portion 630 for the connecting member 900 to pass through, and a recess 650 located below the positioning boss 640 and arranged along the height direction of the connecting portion 630 for accommodating the connecting member 900. In this embodiment, a semi-circular hole 641 is provided on the positioning boss 640 for the connecting member 900 to pass through. A circular hole can also be provided, or the positioning boss 640 can be directly designed as a positioning ring for the connecting member 900 to pass through.

[0075] In this embodiment, the elastic member 800 is preferably a spring. The spring is arranged in a pre-compressed state between the hinge cover plate 700 and the support member 300. The installation structure of the spring is as Figure 3 、 Figure 9As shown, a first annular protrusion 710 is formed around the center hole at the bottom center of the hinge cover plate 700. At the same time, a second annular protrusion 340 is provided on the stepped surface 320 of the support member 300 and at the edge of the center hole. The top of the spring is sleeved on the first annular protrusion 710, and the bottom of the spring is sleeved on the second annular protrusion 340. In other embodiments, concave holes may also be respectively provided on the bottom of the hinge cover plate 700 and the stepped surface 320 of the support member 300, and both ends of the spring are respectively arranged in the concave holes.

[0076] In other embodiments, the spring may also be replaced by other shrinkable and resettable elastic components, such as elastic sheets.

[0077] Referring to Figures 11 to 13 , the shaving unit 400 further includes a cover plate 420 provided on the housing 410, a bracket 430 provided on the cover plate 420, at least one cutter head assembly 440 (in this embodiment, there are three cutter head assemblies 440) provided on the bracket 430, and a transmission structure (not shown in the figure) provided in the enclosed space between the housing 410 and the cover plate 420 for driving the cutter head assembly 440.

[0078] Please refer to Figure 4 again. An annular flange 514 extends outward from the edge of the first mating groove 510 of the first hinge 500. During installation, the annular flange 514 is stacked on the edge of the mounting hole 411. At least one stop block 412 is provided at the edge of the mounting hole 411, and a first avoidance groove 515 is provided on the annular flange 514 corresponding to the stop block 412. The hinge cover plate 700 is covered on the first mating groove 510, and at least one clamping block 720 that can be clamped at the stop block 412 protrudes outward from the edge of the hinge cover plate 700. In this way, through the clamping connection between the clamping block 720 and the stop block 412, the hinge cover plate 700 is fixed on the housing 410. At the same time, since the hinge cover plate 700 is covered on the first hinge 500, the first hinge 500 is limited between the housing 410 and the hinge cover plate 700, connecting the first hinge 500, the housing 410, and the hinge cover plate 700 into a whole.

[0079] When the first hinge 500 is installed, in order to quickly position, at least one positioning post 413 is further provided at the edge of the mounting hole 411, and a semi-circular positioning hole 516 that can be engaged by at least one positioning post 413 is provided on the annular flange 514 when the annular flange 514 rotates. The positioning post 413 and the semi-circular positioning hole 516 not only play a positioning role but also can support and position the transmission structure in the housing 410.

[0080] Furthermore, referring to Figure 14, the position of the stopper 412 is higher than the edge of the mounting hole 411. In this way, the gap between the stopper 412 and the edge of the mounting hole 411 forms a card slot 414 into which the latch 720 can be inserted when rotating horizontally. A limiting block 415 is provided on one side of the card slot 414. When the latch 720 rotates a certain angle in the card slot 414, it abuts against the limiting block 415 and stops rotating. At this time, the hinge cover plate 700 is installed in place. At the same time, for the convenience of the rotation of the hinge cover plate 700, a second avoidance groove 730 for avoiding the stopper 412 is also provided at the edge of the hinge cover plate 700, and the latch 720 is arranged at the second avoidance groove 730. In this way, during installation, first cover the hinge cover plate 700 on the first hinge 500. Specifically, place the hinge cover plate 700 on the top surfaces of the three positioning blocks 512, align the second avoidance groove 730 with the latch 720, and then rotate the hinge cover plate 700 so that the latch 720 rotates into the card slot 414 until it abuts against the limiting block 415, thus completing the installation of the hinge cover plate 700. At this time, the card slot 414 limits the latch 720 in the direction of the central axis L, and the rotation angle of the latch 720 is restricted by the limiting block 415 and the second avoidance groove 730 in the circumferential direction.

[0081] Preferably, in this embodiment, there are three stoppers 412, and the three stoppers 412 are evenly distributed on the edge of the mounting hole 411. There are also three positioning posts 413, and the three positioning posts 413 and the three stoppers 412 are alternately spaced and evenly distributed on the edge of the mounting hole 411. That is, one stopper 412 is arranged between two positioning posts 413, and one positioning post 413 is arranged between two stoppers 412. Such an alternately spaced structure makes the fixation of the first hinge 500 more stable and reliable.

[0082] In this embodiment, the hinge cover plate 700 is fixed in a detachable manner by screwing and snapping as described above. In other embodiments, the hinge cover plate 700 can also be fixed by screws, adhesive bonding, or ultrasonic welding, etc.

[0083] Please refer to again Figure 3 , Figure 9 and Figure 13, in this embodiment, the floating and rotating structure further includes a flexible bracket 210. The flexible bracket 210 is wrapped around the outside of the second hinge 600. That is, the flexible bracket 210 has a hollow cylindrical structure, and the second hinge 600 is located inside the hollow structure of the flexible bracket 210. Specifically, the top of the flexible bracket 210 also extends outward to form an annular convex edge 211. The annular convex edge 211 is placed at the edge of the mounting hole 411, and the annular flange 514 of the first hinge 500 is pressed on the annular convex edge 211. The outer wall of the top of the support member 300 is provided with an annular slot 350, and the bottom of the flexible bracket 210 is sleeved on the annular slot 350 of the support member, so as to realize the fixation of the top and the bottom of the flexible bracket 210. The flexible bracket 210 is arranged here to block the exposed part between the housing 410 and the support member 300, improve the appearance effect of the razor, protect the internal components, and also play a certain supporting role for the shaving unit 400.

[0084] Embodiment Two

[0085] Refer to Figure 15 、 Figure 16 , the floating and rotating structure provided in Embodiment Two of the present invention is substantially the same as the floating and rotating structure in Embodiment One, the difference being that the shapes of the first mating groove 510 and the mating portion 610 are different. Specifically, in this embodiment, the first mating groove 510 has a first plane 518, and the first plane extends horizontally inward along the bottom edge of the first mating groove 510. The surface of the mating portion 610 has a second plane 612 that mates with the first plane 518. The second plane 612 is the bottom plane of the mating portion 610. When the mating portion 610 of the second hinge 600 extends into the first mating groove 510 of the first hinge 500, the second plane 612 of the mating portion 610 is stacked on the first plane 518 in the first mating groove 510. When the limiting structure 220 is separated, the second plane 612 and the first plane 518 can rotate relative to each other, so as to realize the relative rotation between the first hinge 500 and the second hinge 600, and can also meet the requirement that the shaving unit 400 rotates within a range of 360° in Embodiment One.

[0086] The other structures not listed in this embodiment are basically the same as those in Embodiment One, and will not be elaborated here.

[0087] Embodiment Three

[0088] Refer to Figure 17 、 Figure 18, the massager provided in the third embodiment of the present invention is a facial massager. Specifically, the facial massager includes a grippable massager body 110 and a massage head unit 120 of the massager body 110. The massage head unit 120 includes a massage head 121 and the above-mentioned floating rotation structure. Among them, the floating rotation structure is the same as that in the first embodiment. The difference is that the housing in the shaving unit 400 in the first embodiment is the massage head 120 in this embodiment, that is, the first hinge 500 and the hinge cover 700 are fixed as a whole with the massage head 120, and in this embodiment, the cover plate 420, the bracket 430, the cutter head assembly 440, etc. are not required. Of course, the massage head 121 also requires a power mechanism and a transmission structure to rotate at high speed, and the power mechanism and the transmission structure are the same as those in the existing massager structure, which will not be elaborated here. It should be noted that in this embodiment, the first hinge 500 and the second hinge 600 can also adopt the structure as in the second embodiment.

[0089] By providing the above-mentioned floating rotation structure on the massage head 121 and the massager body 110, when the massage head 121 massages the face, the position of the facial massage is different, and the external force exerted by the face on the massage head 121 changes. When the external force applied to the massage head unit 120 decreases, that is, when the external force is less than the elastic force of the elastic member 800, the elastic member 800 elastically returns to push the hinge cover 700 upward, and the first hinge 500 and the massage head unit 120 move upward. The limiting structure 220 between the first hinge 500 and the second hinge 600 re-cooperates to prevent the relative rotation of the first hinge 500 and the second hinge 600. During this process, the massage head unit 120 floats up and down along the central axis L, which can better adapt to the changes in the facial curve and avoid hard contact with the face, thus bringing a more comfortable massage experience to the user.

[0090] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A floating rotating structure, Features: include, A first hinge, wherein the first hinge has a first mating groove extending therethrough; The second hinge has a matching portion disposed in the first matching groove at the top, a limiting structure is provided between the first matching groove and the matching portion to prevent relative rotation and can be separated along the central axis direction of the first matching groove, and a first central hole is provided in the matching portion and passes through to the bottom of the second hinge; The elastic member is inserted into the first matching groove and the first center hole of the second hinge, and the two ends of the elastic member can respectively abut against two external members respectively connected to the first hinge and the second hinge, one of the external members is a shell, and a cover plate is provided on the shell.

2. The floating rotating structure according to claim 1, Features: The limiting structure includes a first limiting plane provided on the outer surface of the matching portion and a second limiting plane provided in the first matching groove and capable of being fitted with the first limiting plane.

3. The floating rotating structure according to claim 2, Features: A positioning block is provided in the first matching groove, and the second limiting plane is provided on the inner side of the positioning block and faces the center of the first matching groove.

4. The floating rotating structure according to claim 1, Features: The limiting structure includes a limiting hole arranged in the first matching groove and a limiting block arranged on the outer surface of the matching part and can extend into the limiting hole; or, the limiting structure includes a limiting block arranged in the first matching groove and a limiting hole arranged on the outer surface of the matching part and can allow the limiting block to extend into.

5. The floating rotating structure according to claim 1, Features: The first matching groove has a first spherical arc surface, and the matching portion surface has a second spherical arc surface matching with the first spherical arc surface; or, the first matching groove has a first plane, and the matching portion surface has a second plane matching with the first plane.

6. The floating rotating structure according to claim 1, Features: The housing has a mounting hole, the first hinge is fixed to the mounting hole through a hinge cover plate, and the top end of the elastic member abuts against the hinge cover plate.

7. The floating rotating structure according to claim 1 or 6, Features: The other outer member is a support member, the bottom of the second hinge passes through the first hinge and extends into and is installed in the support member, and the other end of the elastic member abuts against the support member.

8. The floating rotating structure according to claim 7, Features: The second hinge is fixedly connected to the support member via a connecting member.

9. The floating rotating structure according to claim 8, Features: The mating portion is provided with a second mating groove, the second mating groove wall is provided with at least one first connecting hole that passes through, the first mating groove wall is provided with at least one second connecting hole that corresponds to and passes through the first connecting hole, a mounting column is provided in the support member, and the connecting member is a screw that passes through the first connecting hole and the second connecting hole and extends into the mounting column.

10. The floating rotating structure according to claim 9, Features: The bottom of the second hinge has a connecting portion, and a positioning structure for limiting the connecting member is provided on the connecting portion corresponding to the first connecting hole.

11. The floating rotation structure according to claim 10, wherein: The positioning structure includes a positioning boss provided on the outer wall of the connecting portion through which the connecting member can pass, and a recess located below the positioning boss and arranged along the height direction of the connecting portion for accommodating the connecting member.

12. The floating rotation structure according to claim 9, wherein: The top of the support member has a stepped surface that is recessed inward. A second central hole penetrating the support member is provided on the stepped surface. The mounting post is arranged on the stepped surface. A ring-shaped protrusion is provided on the stepped surface and at the edge of the second central hole. The bottom of the elastic member is sleeved on the ring-shaped protrusion.

13. The floating rotation structure according to claim 6, wherein: At least one stopper is provided at the edge of the mounting hole. The edge of the first fitting groove extends outward to form a ring-shaped flange. The ring-shaped flange is placed at the edge of the mounting hole. A first avoidance groove is provided on the ring-shaped flange corresponding to the stopper. The hinge cover plate is covered in the first fitting groove, and at least one locking block that can be locked at the stopper is provided on the edge of the hinge cover plate.

14. The floating rotation structure according to claim 13, wherein: A card slot into which the locking block can be inserted when rotating horizontally is provided between the stopper and the edge of the mounting hole. A limiting block for resisting the locking block is provided on one side of the card slot. A second avoidance groove for avoiding the stopper is provided on the edge of the hinge cover plate, and the locking block is provided at the second avoidance groove.

15. The floating rotation structure according to claim 13 or 14, wherein: There are multiple stoppers, and the multiple stoppers are evenly distributed on the edge of the mounting hole; there are multiple locking blocks, and the multiple locking blocks are evenly distributed on the edge of the hinge cover plate.

16. The floating rotation structure according to claim 13, wherein: At least one positioning post is further provided at the edge of the mounting hole. A semi-circular positioning hole into which at least one of the positioning posts can be inserted when the ring-shaped flange rotates is provided on the ring-shaped flange.

17. The floating rotation structure according to claim 16, wherein: There are multiple positioning posts and multiple stoppers. The multiple positioning posts and the multiple stoppers are alternately spaced and evenly distributed on the edge of the mounting hole.

18. The floating rotation structure according to claim 1, wherein: It further includes a flexible bracket wrapped outside the second hinge. The top of the flexible bracket is installed at the bottom of one of the external components, and the bottom of the flexible bracket is sleeved on the outer wall of the other external component.

19. A personal care device, including a body and a cutting unit provided on the body, wherein: The cutting unit includes the floating rotation structure according to any one of claims 1 to 18.

20. A massager, including a massager body and a massage head unit provided on the massager body, wherein: The massage head unit includes the floating rotation structure according to any one of claims 1 to 18.

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