WO2020019199A1

WO2020019199A1 - Floating rotation structure, personal nursing device, and massager

Info

Publication number: WO2020019199A1
Application number: PCT/CN2018/097050
Authority: WO
Inventors: 孟凡迪; 邱云峰
Original assignee: 舒可士（深圳）科技有限公司
Priority date: 2018-07-25
Filing date: 2018-07-25
Publication date: 2020-01-30
Also published as: KR102560866B1; EP3827940A1; EP3827940A4; KR20210022713A; EP3827940B1; RU2762889C1

Abstract

A floating rotation structure, a personal nursing device, and a massager. The floating rotation structure comprises a first hinge (500) having a penetrating first matching groove (510); a second hinge (600) having a matching portion (610) on the top, a limiting structure (220) which is used for preventing a relative rotation, and is separated in a central axis direction of the first matching groove (510) being provided between the first matching groove (510) and the matching portion (610); a penetrating first central hole being provided in the matching portion (610); and an elastic member (800) inserted in the first matching groove (510) and the first central hole of the second hinge (600), both ends of the elastic member (800) abutting against two external components respectively connected to the first hinge (500) and the second hinge (600), respectively. In the structure, when an external force is applied, the limiting structure is separated, and the elastic member is compressed so that the first hinge (500) drives an external component to rotate at 360º; when the external is decreased, the elastic member moves upward by means of elastic recovery, thereby achieving horizontal floating.

Description

Floating rotating structure, personal care device and massager

Technical field

The invention belongs to the technical field of nursing massage, and more particularly, relates to a floating rotating structure, a personal care device and a massager.

Background technique

In people's daily life, commonly used personal care devices, such as razors, the blade head directly contacts the human face. Therefore, the movement mode of the blade head directly affects the user experience. In the current razor structure, when the blade head moves on the skin surface, the blade head and the skin are in rigid contact, and the shaving strength is completely adjusted by the grip of the person. When the blade head feels tight contact with the skin, the human hand Press the blade a bit looser, otherwise, press it tighter. During the whole shaving process, the hand is in a tense state. After the shaving is completed, there may be soreness and the use experience is extremely poor. Similarly, in common massage devices, such as facial massagers and neck massagers, the massage head is also in direct contact with the face or neck, and the contact tightness is also adjusted by the user's pressing force. Although a relaxing massage was performed on the face or neck, the hands were sore. Therefore, a comfortable and flexible transmission structure is urgently needed to improve such products and improve the contact between the shaving head or massage head and the skin. Self-adaptive ability to improve user experience.

technical problem

The objective of the embodiments of the present invention is: in the first aspect, a floating rotation structure is provided to solve the technical problems of the personal care device or massager in the prior art when the flexibility is not high and the user experience is poor. .

In a second aspect, a personal care device is provided to solve the technical problems of the personal care device in the prior art that are not highly flexible during use and have poor user experience.

According to a third aspect, a massager is provided to solve the technical problems that the massager in the prior art has low flexibility and poor user experience during use.

Technical solutions

To solve the above technical problems, the technical solutions adopted in the embodiments of the present invention are:

In a first aspect, a floating rotation structure is provided, including,

A first hinge, wherein the first hinge has a first mating groove passing therethrough;

The second hinge has a fitting portion placed in the first fitting groove on the top, and a relative rotation prevention is provided between the first fitting groove and the fitting portion and can be along the central axis direction of the first fitting groove. A first limiting hole that penetrates to the bottom of the second hinge;

An elastic member is penetrated in the first central hole of the first fitting groove and the second hinge, and two ends of the elastic member can be respectively abutted against the first hinge and the second hinge, respectively. Hinged on the two outer parts.

According to a second aspect, a personal care device is provided, which includes a main body and a cutting unit provided on the main body. The cutting unit includes the floating rotating structure described above.

According to a third aspect, a massager is provided, including a massager body and a massage head unit provided on the massager body. The massage head unit includes the above-mentioned floating rotation structure.

Beneficial effect

Compared with the prior art, the beneficial effect of the floating rotation structure provided by the embodiment of the present invention is that the first hinge and the second hinge are in a state of mating with the mating portion through the first mating groove. When no limiting structure is provided, the first The hinge and the second hinge can be rotated relative to each other. In this way, when the power is turned on, the two external components connected to the first hinge and the second hinge are relatively rotated, which is inconvenient for practical operation. A matching structure is set between the first hinge and the second hinge, but when a fixed structure is provided to keep the relative position of the first hinge and the second hinge unchanged, the first hinge and the second hinge The hinges cannot be rotated, so the two external components connected to the first hinge and the second hinge, respectively, have poor flexibility and poor user experience. In the embodiment of the present invention, an elastic member is provided between the first hinge and the second hinge, and the limiting structure is separated in the axial direction of the first mating groove by pressing the first hinge, and is separated by the elastic restoring force of the elastic member. The limiting structure is re-coordinated. In this way, according to different external forces, the limiting structure is continuously separated and matched in use, so that the first hinge and the second hinge are mutually rotated or relatively stationary, and the separation and cooperation are achieved. In the process, the elastic member is stretched and contracted to achieve floating in the contraction and contraction directions. When the floating rotary structure is applied to the product, the user can obtain a good user experience.

The beneficial effect of the personal care device provided by the embodiments of the present invention is that the personal care device can enable the user to obtain a good use experience by adopting the floating rotation structure described above.

The beneficial effect of the massager provided by the embodiment of the present invention is that the massager can obtain a good user experience by adopting the above floating rotation structure.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only the present invention. For some embodiments, for those of ordinary skill in the art, other drawings may be obtained according to these drawings without paying creative labor.

FIG. 1 is a schematic structural diagram of a shaver provided in Embodiment 1 of the present invention; FIG.

2 is a side view of a cutting unit of a shaver provided in Embodiment 1 of the present invention;

3 is a longitudinal sectional view of a cutting unit of a shaver provided in Embodiment 1 of the present invention;

4 is a schematic structural diagram of a first hinge in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

5 is a schematic structural diagram of a second hinge in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

6 is an exploded view of a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

FIG. 7 is an assembly plan view of a first hinge and a second hinge in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention; FIG.

8 is a longitudinal sectional view of a first hinge and a second hinge in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

9 is a schematic structural diagram of a support in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

10 is a schematic structural diagram of a hinge cover in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

11 is an exploded view of the hinge cover and the shell in the floating rotary structure in the shaver provided in the first embodiment of the present invention before assembly;

12 is an assembly plan view of a hinge cover and a housing in a floating rotation structure in a shaver provided in Embodiment 1 of the present invention;

13 is an exploded schematic view of a cutting unit in a shaver provided in Embodiment 1 of the present invention;

FIG. 14 is an enlarged view at A in FIG. 11; FIG.

15 is an exploded schematic view of a cutting unit in a shaver provided in Embodiment 2 of the present invention;

16 is a longitudinal sectional view of a cutting unit in a shaver provided in Embodiment 2 of the present invention;

FIG. 17 is a schematic structural diagram of a facial massager provided by Embodiment 3 of the present invention; FIG.

18 is a partial cross-sectional view of the inside of a massage head in a face massager according to a third embodiment of the present invention;

Among them, each reference numeral in the figure:

100-body; 110-massage body; 120-massage head unit; 121-massage head; 200-cutting unit; 210-flexible bracket; 211-ring convex edge; 220-limiting structure; 300-supporting member; 310-Mounting post; 320-Step surface; 330-Second center hole; 340-Second annular protrusion; 350-Ring card slot; 400-Shaving unit; 410-Housing; 411-Mounting hole; 412- Stop block; 413-positioning column; 414-slot groove; 415-limiting block; 420-cover plate; 430-bracket; 440-knife head assembly; 500-first hinge; 510-first mating groove; 511-section Two limiting planes; 512-locating block; 513-second connecting hole; 514-ring flange; 515-first avoiding groove; 516-semi-circular positioning hole; 517-first spherical arc surface; 518- First plane; 600-second hinge; 610-fitting portion; 611-first limit plane; 612-second plane; 620-second fitting groove; 621-first center hole; 622-first connection hole; 630-connecting part; 640-positioning boss; 641-semi-circular hole; 650-depression; 700-hinged cover plate; 710-first annular protrusion; 720-clamping block; 730-second avoidance slot; 800-elastic piece; 900-connecting piece.

Embodiments of the invention

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

It should be noted that when a component is called "fixed to" or "disposed to" another component, it may be directly on another component or indirectly on the other component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

It should also be noted that the same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is a term "up", "down", " The directions or positional relationships indicated by “left” and “right” are based on the directions or positional relationships shown in the drawings, and are 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 The orientation and structure are structured and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes, and should not be construed as limitations on this patent. For those of ordinary skill in the art, Understand the specific meaning of the above terms.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless specifically defined otherwise.

A floating rotation structure provided by an embodiment of the present invention includes a first hinge having a first mating groove penetrating in the first hinge, and a second hinge having a mating portion placed in the first mating groove at the top, and the first mating A limiting structure is provided between the groove and the mating portion to prevent relative rotation and can be separated in the direction of the central axis of the first mating groove. The mating portion is provided with a first central hole penetrating to the bottom of the second hinge; Within the first central hole of the first fitting groove and the second hinge, the two ends of the elastic member can abut against the two outer parts respectively connected to the first hinge and the second hinge.

In the embodiment of the present invention, the first hinge and the second hinge are in a state of mating with the mating portion through the first mating groove. When the position-limiting structure is not provided, the first hinge and the second hinge can rotate relative to each other. After starting, it will cause the two external parts connected to the first hinge and the second hinge to rotate relative to each other, which is not convenient for actual operation; therefore, it is necessary to set up between two matching parts, that is, the first hinge and the second hinge Limiting structure, but when a fixed limiting structure that keeps the relative position between the first hinge and the second hinge fixed is set, the first hinge and the second hinge cannot rotate between each other, which is different from the first hinge and the second hinge, respectively. The two external parts connected by the hinge become less flexible and have a poor user experience. In the embodiment of the present invention, an elastic member is provided between the first hinge and the second hinge, and the limiting structure is separated in the axial direction of the first mating groove by pressing the first hinge, and is separated by the elastic restoring force of the elastic member. The limiting structure is re-coordinated. In this way, according to different external forces, the limiting structure is continuously separated and matched in use, so that the first hinge and the second hinge are mutually rotated or relatively stationary, and the separation and cooperation are achieved. In the process, the elastic member is stretched and contracted to achieve floating in the contraction and contraction directions. When the floating rotary structure is applied to the product, the user can obtain a good user experience.

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

In practical applications, the floating rotating structure can be implemented by different embodiments. The floating rotating structure will be described in detail below with reference to specific products.

Example one

Referring to FIGS. 1 to 3, the personal care device provided by the first embodiment of the present invention is a shaver. Specifically, the shaver includes a main body 100 and a cutting unit 200 provided on the main body 100. 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 that cooperates with the first hinge 500, and an elastic member. 800. A top end of the second hinge 600 is matched with the first hinge 500 and an anti-rotation limiting structure 220 is provided therebetween, and a bottom end of the second hinge 600 is fixedly connected to the support 300. Specifically, the first hinge 500 has a first mating groove 510 therein, and the first mating groove 510 has a first spherical arc surface 517 therein. The spherical center of the first spherical arc surface 517 is O, and the first mating groove 510 has a central axis L. The bottom of the first matching groove 510 penetrates the first hinge 500, that is, the first hinge 500 is hollow.

The top of the second hinge 600 has a mating portion 610 placed in the first mating groove 510. The mating portion 610 has a spherical shape. The outer wall surface of the mating portion 610 matches the arc surface of the first spherical arc surface 517. Thus, the mating portion When 610 is placed in the first matching groove 510, the outer wall surface of the matching portion 610 can better fit the first spherical arc surface 517. A limiting structure 220 is provided between the mating portion 610 and the first mating groove 510 to prevent relative rotation. The engaging portion 610 is provided with a second engaging groove 620. A bottom of the second engaging groove 620 is provided with a first central hole 621 penetrating to the bottom of the second hinge 600. The bottom of the second hinge 600 extends through the first hinge 500 and is fixed to In the supporting member 300, in this way, the second hinge 600 is fixedly connected to the supporting member 300 as a whole.

Further, in this embodiment, the shaving unit 400 includes a housing 410 and a hinge cover 700. The housing 410 is three-lobed as a whole, and has a mounting hole 411 in the center. The first hinge 500 is fixed at the mounting hole 411 by a hinge cover 700, and the second hinge 600 that cooperates with the first hinge 500 protrudes at the mounting hole 411. And connected with the support 300. The top end of the elastic member 800 is in contact with the hinge cover 700. In this embodiment, the first hinge 500 is fixed at the mounting hole 411 through the hinge cover 700. In other embodiments, the hinge cover 700 may also be omitted, and the first hinge 500 may be fixed at the mounting hole 411 by using its own structural design or other parts.

The elastic member 800 passes through the first center hole 621, the second matching groove 620, and the first matching groove 510 of the second hinge 600, and the top end of the elastic member 800 abuts against the bottom of the hinge cover 700. The bottom end abuts on the top of the support 300.

In the non-working state, the elastic force of the elastic member 800 pushes the hinge cover 700 and the support 300 along both sides of the central axis L, so that the first hinge 500 fixedly connected to the hinge cover 700 and the support 300 are fixedly connected. The second hinges 600 are more closely fitted with a spherical arc surface.

When the shaver is in operation, when the shaving unit 400 comes into contact with the face and is squeezed by the force of the face, the shaving unit 400 drives the hinge cover 700 to move downward to squeeze the elastic member 800, and at the same time, the first hinge 500 also follows Move downward. When the downward force is greater than the elastic force of the elastic member 800, the elastic member 800 is compressed. In this process, the rotation-preventing limiting structure 220 between the first hinge 500 and the second hinge 600 is separated to make the hinge The cover plate 700 and the shaving unit 400 can rotate with the first hinge 500 around the spherical center O of the first spherical arc surface 517, so that the shaving unit 400 can be rotated within a range of 360 °. During the rotation, the elastic member 800 is shaved. The flexible connection between the beard unit 400 and the support 300 makes the 360 ° rotation of the shaving unit 400 smoother; and when the shaving unit 400 acts on different parts of the face, the external force of the face reacts to the shaver 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 recovers and pushes the hinge cover 700 upward, and the first hinge 500 and the shaving unit 400 move upward. Limit between hinge 500 and second hinge 600 The structure 220 re-cooperates to prevent the first hinge 500 and the second hinge 600 from rotating relative to each other. In this process, the shaving unit 400 floats up and down along the central axis L, and is more able to adapt to changes in the face curve and avoid hard contact with the face, thereby Give users a more comfortable shaving experience.

Further, in order to facilitate that the positions of the first hinge 500 and the second hinge 600 cannot rotate with each other, and also facilitate the separation of the first hinge 500 from the second hinge 600, the position limiting structure 220 does not block the rotation of the first hinge 500 In this embodiment, the design of the limiting structure 220 is simple and clever, that is, to prevent rotation in the circumferential direction without affecting separation in the axial direction.

Specifically, referring to FIGS. 4 to 8, the limiting structure 220 includes a first limiting plane 611 provided on an outer wall surface of the mating portion 610 and a first limiting plane 611 provided in the first mating groove 510.第二限位平面 511。 The second limit plane 511. Because the first spherical arc surface 517 and the outer wall surface of the mating portion 610 are spherical arc surfaces, they can rotate with each other without friction and resistance when they are directly mated, and between the first limiting plane 611 and the second limiting plane 511 For planar fitting, when the first hinge 500 and the mating portion 610 rotate with each other, the first limit plane 611 and the second limit plane 511 cannot rotate due to the friction between the two planes, thereby achieving limit in the circumferential direction. Bit. At the same time, the two planes sticking together in the axial direction do not prevent the first hinge 500 from moving up or down. In other embodiments, the limiting structure may also include a limiting hole provided in the first mating groove and a limiting card block provided on the outer surface of the mating portion and extending into the limiting hole, through the limiting hole and the limiting card. The cooperation of the blocks can also achieve separation on the axis of the first matching groove and mutual rotation after separation. Of course, the positions of the limiting hole and the limiting clamping block can also be interchanged, that is, the limiting structure includes a limiting clamping block provided in the first mating groove and an external surface of the mating portion for the limiting clamping block to extend into. Limit hole.

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

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 mating portion 610. There are three second limiting planes 511 and three second limiting planes 511. Evenly disposed in the first matching groove 510. Through the three sets of plane bonding, the position between the first hinge 500 and the second hinge 600 can be well limited. Moreover, since the top surface of the cube-shaped positioning block 512 is also flat, in this way, a triangular arrangement is formed between the three positioning blocks 512, and the top surfaces of the three positioning blocks 512 form a stable support surface for more reliable support Hinge cover 700. Of course, the number of the first limit plane 611 and the second limit plane 511 may also be one, two, or four, or more.

In this embodiment, when the second hinge 600 and the supporting member 300 are fixedly connected as a whole, the two 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 supporting member 300 is detachable. In this way, it is convenient to disassemble and maintain, and it is also convenient to assemble the product during 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-on connection, may also be adopted.

Specifically, a first connecting hole 622 is provided in the second engaging groove 620 of the engaging portion 610 of the second hinge 600, and a first corresponding hole 622 corresponding to the first connecting hole 622 is provided in the first engaging groove 510 that is fitted to the engaging portion 610. Two connection holes 513. The connecting member 900 is specifically a screw. A mounting post 310 is provided in the support member 300, and a screw hole (not labeled) is provided in the mounting post 310. The screw is screwed into the screw hole of the mounting post 310 through the first connection hole 622 and the second connection hole 513. The second hinge 600 is fixed by screwing. The structure is simple, easy to process, and easy to assemble.

As shown in FIG. 9, the support member 300 has a substantially cylindrical structure. The top of the support member 300 has a stepped surface 320 recessed inward. The stepped surface 320 is provided with a second central hole 330 penetrating the supporter 300. The mounting post 310 is provided on the stepped surface. On 320, in this way, the depth of the stepped surface 320 recessed downwards fills the height of the mounting post 310, preventing the mounting post 310 from protruding from the top surface of the support 300 and occupying more space or forming a connection gap.

Further, there are three first connecting holes 622, three corresponding second connecting holes 513, three corresponding mounting posts 310, three connecting members 900, and three connecting members 900 in a triangular configuration. The two hinges 600 and the support 300 are fixedly connected to be more stable. Moreover, for the second hinge 600, the number of the first limiting planes 611 and the first connecting holes 622 are the same, both of which are three, and the first connecting holes 622 and the first limiting planes 611 are alternately arranged at intervals. That is, a first connecting hole 622 is provided between the two first limiting planes 611, and a first limiting plane 611 is provided between the two first connecting holes 622.

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 a cylindrical structure. The diameter of the cylinder is slightly larger than the diameter of the bottom of the fitting portion 610. Because the inner wall surface of the second spherical arc surface in the ball head is gradually increased from bottom to top, the diameter of the cylinder is designed to be slightly larger than the diameter of the bottom of the mating portion 610. In this way, on the one hand, the compactness of the second hinge 600 part is maintained. On the other hand, the connecting piece 900 can also pass through the connecting portion 630 when the connecting portion 900 passes through the fitting portion 610 through the first connecting hole 622, so that the connecting portion 610 and the connecting portion 630 of the second hinge 600 are connected through the connecting piece 900 as As a whole, it is possible to avoid instability caused by the detachment from the connecting portion 630 when only the mating portion 610 is connected to the support 300. Specifically, a positioning structure for limiting the connecting member 900 is provided on the connecting portion 630 corresponding to the first connecting hole 622.

Specifically, as shown in FIG. 5, the positioning structure includes a positioning boss 640 provided on an outer wall of the connecting portion 630 and through which the connecting member 900 can pass, and is located below the positioning boss 640 along the height direction of the connecting portion 630. The recess 650 for receiving 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, or a circular hole may be provided, or the positioning boss 640 may be directly designed as a positioning ring for the connecting member 900 to pass through.

In this embodiment, the elastic member 800 is preferably a spring. The spring is disposed in a pre-compressed state between the hinge cover 700 and the support 300. The mounting structure of the spring is shown in Figures 3 and 9. The bottom center of the hinge cover 700 extends around the center hole to form a first ring-shaped protrusion 710. At the same time, a second ring-shaped protrusion 340 is provided on the step surface 320 of the support member 300 and located at the edge of the center hole. The first annular protrusion 710 is provided, and the bottom of the spring is sleeved on the second annular protrusion 340. In other embodiments, recessed holes may be provided on the bottom of the hinge cover 700 and the stepped surface 320 of the support 300, and two ends of the spring are respectively disposed in the recessed holes.

In other embodiments, the spring may be replaced by other retractable and resettable elastic members. Such as shrapnel.

Referring to FIGS. 11 to 13, the shaving unit 400 further includes a cover plate 420 provided on the casing 410, a bracket 430 provided on the cover plate 420, and at least one cutter head assembly 440 (a knife in this embodiment) provided on the bracket 430. There are three head assemblies 440), and a transmission structure (not shown in the figure) for driving the cutter head assembly 440 provided in the space enclosed by the casing 410 and the cover plate 420.

Please refer to FIG. 4 again, the edge of the first mating groove 510 of the first hinge 500 extends outward to form an annular flange 514. During installation, the annular flange 514 is stacked on the edge of the mounting hole 411, and the edge of the mounting hole 411 is provided. There is at least one stopper 412, a first avoidance groove 515 is provided on the annular flange 514 corresponding to the stopper 412, the hinge cover 700 is covered in the first mating groove 510, and the edge of the hinge cover 700 is convex outward At least one locking block 720 that can be locked at the blocking block 412 is extended. In this way, the hinge cover 700 is fixed on the housing 410 by the latching of the block 720 and the stopper 412, and at the same time, the first hinge 500 is restricted to be located on the first hinge 500 because the hinge cover 700 is covered on the first hinge 500. Between the housing 410 and the hinge cover 700, the first hinge 500, the housing 410, and the hinge cover 700 are connected as a whole.

During the installation of the first hinge 500, at least one positioning post 413 is also provided at the edge of the mounting hole 411 for fast positioning. The annular flange 514 is provided with at least one positioning post 413 when the annular flange 514 rotates Semi-circular positioning hole 516. The positioning post 413 and the semi-circular positioning hole 516 not only play a positioning role, but also support and position a transmission structure in the housing 410.

Further, referring to FIG. 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 locking slot 414 that can be locked in when the locking block 720 rotates horizontally. A stop block 415 is provided on one side of the card slot 414. When the card block 720 rotates within the card slot 414 by a certain angle, the stop block 415 does not continue to rotate. At this time, the hinge cover 700 is installed in place, and at the same time, It is convenient for the hinge cover 700 to rotate, and a second avoidance slot 730 for avoiding the stopper 412 is also provided on the edge of the hinge cover 700, and the clamping block 720 is provided at the second avoidance slot 730. In this way, during installation, the hinge cover 700 is first covered on the first hinge 500. Specifically, the hinge cover 700 is placed on the top surfaces of the three positioning blocks 512, and the second avoidance grooves 730 correspond to At the block 720, the hinge cover 700 is rotated again, so that the block 720 is rotated into the slot 414 until it stops at the limit block 415 to complete the installation of the hinge cover 700. At this time, the clamping groove 414 limits the clamping block 720 in the direction of the central axis L, and the rotation angle of the clamping block 720 is restricted by the limiting block 415 and the second avoiding groove 730 in the circumferential direction.

Preferably, in this embodiment, three stoppers 412 are provided, the three stoppers 412 are evenly distributed on the edge of the mounting hole 411, and three positioning posts 413 are also provided. The three positioning posts 413 and the three stoppers 412 are alternately spaced and Evenly distributed on the edges of the mounting holes 411. That is, a stopper 412 is disposed between the two positioning posts 413, and a positioning post 413 is disposed between the two stoppers 412. The alternately spaced structure makes the fixing of the first hinge 500 more stable and reliable.

In this embodiment, the hinge cover 700 is fixed by using the above-mentioned screwing and snap-in detachable method. In other embodiments, the hinge cover 700 may also be fixed by screws, glue, or ultrasonic welding.

Please refer to FIGS. 3, 9 and 13 again. In this embodiment, the floating rotating structure further includes a flexible support 210. The flexible bracket 210 is wrapped around the second hinge 600. That is, the flexible bracket 210 has a hollow cylindrical structure, and the second hinge 600 is located in 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 on the edge of the mounting hole 411. The annular flange 514 of the first hinge 500 is pressed on the annular convex edge 211. A ring-shaped slot 350 is provided on the top outer wall of the support member 300, and the bottom of the flexible bracket 210 is sleeved on the ring-shaped slot 350 of the support member, so that the top and bottom of the flexible bracket 210 are fixed. A flexible support 210 is provided here to shield the exposed part between the housing 410 and the support 300, which improves the appearance of the shaver, and also protects the internal components, and also plays a certain role in the shaving unit 400. Support role.

Example two

15 and FIG. 16, the floating rotating structure provided in the second embodiment of the present invention is substantially the same as the floating rotating structure in the first embodiment, except that the shape of the first engaging groove 510 and the engaging portion 610 are different. Specifically, in this embodiment, the first mating groove 510 has a first plane 518 therein, the first plane extends horizontally inward along the bottom edge of the first mating groove 510, and the surface of the mating portion 610 has a second mating with the first plane 518 Plane 612. The second plane 612 is a 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 overlaps the first plane 518 in the first mating groove 510. When 220 is separated, the second plane 612 and the first plane 518 can rotate with each other, so that the relative rotation between the first hinge 500 and the second hinge 600 can also be achieved, and the shaving unit 400 in the first embodiment can also be realized. Requirements for 360 ° rotation.

The other structures not listed in this embodiment are basically the same as those in the first embodiment, and will not be repeated here.

Example three

Referring to FIG. 17 and FIG. 18, the massager provided in the third embodiment of the present invention is a facial massager. Specifically, the facial massager includes a graspable 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 of the first embodiment, except that the shell 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 and the massage. The head 120 is fixed as a whole, and in this embodiment, the cover plate 420, the bracket 430, the cutter head assembly 440, and the like are not needed. Of course, the massage head 121 also needs a power mechanism and a transmission structure to rotate at a high speed. The power mechanism and the transmission structure are the same as those in the existing massager structure, and details are not described herein. It should be noted that in this embodiment, the first hinge 500 and the second hinge 600 may also adopt the structure as in the second embodiment.

By providing the above-mentioned floating rotation structure on the massage head 121 and the massager body 110, when the massage head 121 is massaged on the face, the facial massage position is different, and the external force of the face that reacts on the massage head 121 changes, and when applied to the massage head When the external force on the 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 recovers and pushes the hinge cover 700 upward, the first hinge 500 and the massage head unit 120 move upward, and the first hinge 500 and the second hinge The restriction structure 220 between 600 prevents the first hinge 500 and the second hinge 600 from rotating relative to each other. During this process, the massage head unit 120 floats up and down along the central axis L, and is more able to adapt to changes in the face curve, avoiding contact with the face. The hard contact of the body makes the user a more comfortable massage experience.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

A floating rotation structure, comprising:

A first hinge, wherein the first hinge has a first mating groove passing therethrough;

The second hinge has a fitting portion placed in the first fitting groove on the top, and a relative rotation prevention is provided between the first fitting groove and the fitting portion and can be along the central axis direction of the first fitting groove A first limiting hole that penetrates to the bottom of the second hinge;

An elastic member is penetrated in the first central hole of the first fitting groove and the second hinge, and two ends of the elastic member can be respectively abutted against the first hinge and the second hinge, respectively. Hinged on the two outer parts.
The floating rotating structure according to claim 1, wherein the limiting structure comprises a first limiting plane provided on an outer surface of the mating portion, and the first mating groove is provided in the first mating groove to be connected with the A limiting plane is a second limiting plane.
The floating rotation structure according to claim 2, wherein a positioning block is provided in the first matching groove, and the second limit plane is provided inside the positioning block and faces the first matching groove. center of.
The floating rotation structure according to claim 1, wherein the limiting structure comprises a limiting hole provided in the first matching groove and an external surface of the matching portion can extend into the limiting hole. Or a limiting structure provided in the first mating groove and a limiting structure provided on an outer surface of the mating portion for the limiting card to extend into; Bit hole.
The floating rotating structure according to claim 1, wherein the first matching groove has a first spherical arc surface, and the surface of the mating portion has a second spherical arc surface that cooperates with the first spherical arc surface. Or, the first mating groove has a first plane therein, and the surface of the mating portion has a second plane mating with the first plane.
The floating rotating structure according to claim 1, wherein an outer member is a housing, the housing has a mounting hole, and the first hinge is fixed to the mounting hole by a hinge cover, and the elasticity is The top end of the piece abuts against the hinge cover.
The floating rotation structure according to claim 1 or 6, characterized in that: the other outer member is a support, and the bottom of the second hinge extends through the first hinge and is installed in the support, so that The other end of the elastic member abuts against the support member.
The floating rotation structure according to claim 7, wherein the second hinge is fixedly connected to the support member through a connecting member.
The floating rotation structure according to claim 8, wherein the mating portion is provided with a second mating groove, and a wall of the second mating groove is provided with at least one first connection hole penetrating through the first mating portion. The groove wall is provided with at least one second connection hole corresponding to the first connection hole and penetrating through the groove. The support member is provided with a mounting post therein, and the connection member passes through the first connection hole and the second connection hole. Screws protruding into the mounting posts.
The floating rotation structure according to claim 9, characterized in that: the bottom of the second hinge has a connection portion, and the connection portion is provided at a position corresponding to the first connection hole for limiting the positioning of the connection member structure.
The floating rotating structure according to claim 10, wherein the positioning structure comprises a positioning boss provided on an outer wall of the connecting portion, through which the connecting member can pass, and located below the positioning boss. A recess provided in a height direction of the connecting portion and configured to receive the connecting member.
The floating rotation structure according to claim 9, wherein the top of the support member has a stepped surface recessed inward, and a second central hole penetrating the support member is provided on the stepped surface, and the mounting A column is provided on the step surface, and an annular protrusion is provided on the step surface and at the edge of the two central holes, and the bottom of the elastic member is sleeved on the annular protrusion.
The floating rotation structure according to claim 6, wherein at least one stopper is provided at an edge of the mounting hole, and the edge of the first mating groove extends outward to form an annular flange, and the annular flange Is placed on the edge of the mounting hole, a first avoidance groove is provided on the annular flange corresponding to the stopper, the hinge cover is disposed in the first fitting groove, and the hinge cover The edge of the board is provided with at least one clamping block which can be locked at the stop block.
The floating rotation structure according to claim 13, characterized in that: between the stopper and the edge of the mounting hole, a card slot is provided for the card block to be locked when the card block is rotated horizontally. A limiting block for blocking the blocking block is provided on the side, and a second avoiding slot for avoiding the blocking block is provided on the edge of the hinge cover, and the blocking block is provided at the second blocking slot.
The floating rotation structure according to claim 13 or 14, characterized in that: there are a plurality of stoppers, and a plurality of the stoppers are evenly distributed on the edge of the mounting hole; The clamping blocks are evenly distributed on the edge of the hinge cover.
The floating rotation structure according to claim 13, wherein at least one positioning post is further provided at the edge of the mounting hole, and the annular flange is provided with at least one of the annular flange when the annular flange is rotated. A semi-circular positioning hole into which the positioning post is snapped.
The floating rotation structure according to claim 16, wherein there are a plurality of positioning posts and a plurality of stoppers, and the plurality of positioning posts and the plurality of stoppers are alternately spaced and evenly distributed on The edge of the mounting hole.
The floating rotating structure according to claim 1, further comprising a flexible bracket wrapped around the second hinge, a top of the flexible bracket is mounted on a bottom of one of the outer parts, and the flexible bracket The bottom is sleeved on the outer wall of another outer part.
A personal care device includes a main body and a cutting unit provided on the main body, wherein the cutting unit includes a floating rotating structure according to any one of claims 1 to 18.
A massager includes a massager body and a massage head unit provided on the massager body, wherein the massage head unit comprises a floating rotation structure according to any one of claims 1 to 18.