CN110757516A - Shaver and tool bit floating structure - Google Patents

Abstract

A shaver and a shaver head floating structure thereof are provided, wherein the shaver head floating structure comprises a support part and a shaver unit; a first hinge provided in the shaving unit, the first hinge having a first fitting groove therein; the top of the second hinge is provided with a matching part arranged in the first matching groove, a limiting structure is arranged between the first matching groove and the matching part, and the bottom of the second hinge penetrates through the first hinge to stretch into and be installed in the supporting piece; the elastic piece passes through the first hinge and the second hinge, and two ends of the elastic piece are respectively abutted against the shaving unit and the supporting piece. When shaving unit work and receive skin extrusion, limit structure between first hinge and the second hinge separates, and the elastic component is compressed so that first hinge drives and shaves the unit and do 360 rotations, reduces when applying the external force on shaving the unit, and the elastic component elastic recovery upwards promotes and shaves unit rebound to the realization is shaved the unit and is floated from top to bottom, more can adapt to the curvilinear motion of face, brings more comfortable use experience for the user.

Description

Shaver and tool bit floating structure

Technical Field

The invention relates to the technical field of personal care products, and particularly provides a shaver and a shaver head floating structure thereof.

Background

In the field of personal care products, such as electric shavers, most shaving units are fixedly connected with a supporting structure, namely the shaving units cannot move relative to the supporting structure, and a cutter head assembly on the shaving units is driven by an internal transmission structure to rotate for shaving operation.

In order to solve the problem, some shaving units utilize a cross universal coupling to realize rotation with a supporting structure, but the structure is complex to assemble, the reject ratio is increased, the flexibility of the rotation structure is not high, the self-adaptive capacity between the shaving units and the skin is not fundamentally solved, and good user experience cannot be provided.

Disclosure of Invention

The invention aims to provide a cutter head floating structure, and aims to solve the technical problems that a rotating structure of a shaving unit relative to a supporting structure in a shaver in the prior art is complex, the flexibility is not high, and the user experience is poor.

In order to achieve the purpose, the invention adopts the technical scheme that: a floating structure of a cutter head comprises a floating structure,

a support member;

a shaving unit disposed above the supporter;

a first hinge provided in the shaving unit, the first hinge having a first engagement groove therein, a bottom of the first engagement groove penetrating the first hinge;

the top of the second hinge is provided with a matching part arranged in the first matching groove, a limiting structure which prevents relative rotation and can be separated along the central axis direction of the first matching groove is arranged between the first matching groove and the matching part, a first central hole penetrating to the bottom of the second hinge is arranged in the matching part, and the bottom of the second hinge penetrates through the first hinge and extends into and is installed in the supporting piece;

the elastic piece penetrates through the first matching groove and the first central hole of the second hinge, the top end of the elastic piece abuts against the shaving unit, and the bottom end of the elastic piece abuts against the supporting piece.

Further, the shaving unit comprises a housing and a hinge cover plate, the housing is provided with a mounting hole, the first hinge is fixed at the mounting hole through the hinge cover plate, the second hinge extends out of the mounting hole and is fixedly connected with the supporting piece, and the top end of the elastic piece abuts against the hinge cover plate.

Further, a first spherical cambered surface is arranged in the first matching groove, and a second spherical cambered surface matched with the first spherical cambered surface is arranged on the surface of the matching part; alternatively, the first fitting groove has a first flat surface therein, and the fitting portion surface has a second flat surface fitted with the first flat surface.

Furthermore, limit structure is including locating the first spacing plane of cooperation portion surface and locating in the first cooperation inslot can with the second spacing plane laminating of first spacing plane.

Furthermore, a positioning block is arranged in the first matching groove, and the second limiting plane is arranged on the inner side of the positioning block and faces the center of the first matching groove.

Furthermore, the number of the first limiting planes is multiple, and the first limiting planes are uniformly distributed on the outer wall surface of the matching part; the second limit planes are multiple and are uniformly arranged in the first matching groove.

Further, the second hinge is fixedly connected with the supporting piece through a connecting piece.

Furthermore, a second matching groove is formed in the matching portion, at least one first connecting hole is formed in the second matching groove wall, at least one second connecting hole is formed in the first matching groove wall, corresponds to and is communicated with the first connecting hole, a mounting column is arranged in the support piece, and the connecting piece is a screw penetrating through the first connecting hole and the second connecting hole and extending into the mounting column.

Furthermore, the bottom of the second hinge is provided with a connecting part, and a positioning structure used for limiting the connecting piece is arranged on the connecting part corresponding to the first connecting hole.

Furthermore, the positioning structure comprises a positioning boss arranged on the outer wall of the connecting part and used for the connecting piece to pass through, and a recess arranged below the positioning boss along the height direction of the connecting part and used for accommodating the connecting piece.

Furthermore, the top of the supporting piece is provided with an inwards-concave step surface, the step surface is provided with a second center hole which runs through the supporting piece, the mounting column is arranged on the step surface, the step surface is provided with two center holes, the edges of the two center holes are provided with annular bulges, and the bottom of the elastic piece is sleeved on the annular bulges.

Furthermore, the number of the first limiting planes is multiple, the number of the first connecting holes is the same as that of the first limiting planes, and one first connecting hole is arranged between the two first limiting planes.

Furthermore, the edge of mounting hole is equipped with an at least dog, first cooperation groove edge outwards extends and forms annular flange, annular flange arranges in the mounting hole edge, correspond on the annular flange dog department is equipped with first groove of keeping away, hinge apron lid is located in the first cooperation inslot, just be equipped with on the edge of hinge apron at least one can block in the fixture block of dog department.

Furthermore, a clamping groove for clamping the clamping block when the clamping block horizontally rotates is formed between the stop block and the edge of the mounting hole, a limiting block for abutting against the clamping block is arranged on one side of the clamping groove, a second avoiding groove capable of avoiding the stop block is formed in the edge of the hinge cover plate, and the clamping block is arranged at the second avoiding groove.

Furthermore, the number of the stop blocks is multiple, and the stop blocks are uniformly distributed on the edge of the mounting hole; the hinge cover plate is characterized in that the number of the clamping blocks is multiple, and the clamping blocks are uniformly distributed on the edge of the hinge cover plate.

Furthermore, the edge of the mounting hole is also provided with at least one positioning column, and the annular flange is provided with a semicircular positioning hole for the at least one positioning column to be clamped into when the annular flange rotates.

Furthermore, the positioning columns are multiple, the stop blocks are multiple, and the positioning columns and the stop blocks are alternately spaced and uniformly distributed at the edge of the mounting hole.

Furthermore, the shaving unit further comprises a cover plate arranged on the shell, a support arranged on the cover plate, at least one cutter head assembly arranged on the support, and a transmission structure arranged in a space enclosed by the shell and the cover plate and used for driving the cutter head assembly.

The flexible support is wrapped outside the second hinge, the top of the flexible support is arranged in the mounting hole, the first hinge is arranged on the edge of the top of the flexible support in a pressing mode, and the bottom of the flexible support is sleeved on the outer wall of the supporting piece.

Furthermore, the outer wall of the top of the support member is provided with an annular clamping groove, and the bottom of the flexible support is sleeved on the annular clamping groove.

The invention also provides a shaver, which comprises a shaver body and the shaver head floating structure arranged on the shaver body.

The invention has the beneficial effects that:

according to the cutter head floating structure provided by the invention, the first hinge is fixed in the shaving unit, and the first hinge and the shaving unit are integrated into a whole; the second hinge is fixedly connected with the supporting piece, the first hinge and the second hinge are in a matching state with the matching part through the first matching groove, a limiting structure is arranged between the first hinge and the second hinge, and meanwhile, an elastic piece is arranged, when the shaver works, the shaving unit is contacted with the face and is extruded by the action force of the face, the shaving unit moves downwards to extrude the elastic piece, meanwhile, the first hinge also moves downwards, when the downward action force is greater than the elastic force of the elastic piece, the elastic piece is compressed, in the process, the anti-rotation limiting structure between the first hinge and the second hinge is separated, so that the shaving unit can rotate around the center of the first matching groove along with the first hinge, 360-degree rotation of the shaving unit is realized, and in the rotating process, the elastic piece is used for flexible connection between the shaving unit and the supporting piece, so that the shaving unit can rotate more smoothly in 360 degrees; and when shaving the unit and act on different positions of face, the external force that face reaction was razor changes, external force when applying on shaving the unit reduces, when external force is less than the elasticity of elastic component promptly, elastic component elastic recovery upwards promotes shaving the unit, first hinge and shaving unit rebound, limit structure between first hinge and the second hinge deuterogamies and prevents first hinge and second hinge relative rotation, at this in-process, shaving the unit and float from top to bottom along central axis L, more can adapt to the curvilinear motion of face, avoid the rigid contact with the face, thereby bring more comfortable use experience for the user.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a shaver according to an embodiment of the present invention;

fig. 2 is a side view of a floating structure of a head of a shaver according to an embodiment of the present invention;

fig. 3 is a longitudinal sectional view of a floating structure of a head in a shaver according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a first hinge in a floating structure of a head of a shaver according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a second hinge in a floating structure of a head of a shaver according to an embodiment of the present invention;

fig. 6 is an exploded view of a floating structure of a shaver head according to an embodiment of the present invention before assembling a first hinge and a second hinge;

fig. 7 is a top view of the assembly of the first hinge and the second hinge in the floating structure of the head of the shaver according to the first embodiment of the present invention;

fig. 8 is a longitudinal sectional view of the shaver according to the first embodiment of the present invention after the first hinge and the second hinge are assembled;

fig. 9 is a schematic structural diagram of a supporting member in a floating structure of a head of a shaver according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a hinge cover plate in a floating structure of a shaver head according to an embodiment of the present invention;

fig. 11 is an exploded view of a hinge cover plate and a housing of a floating structure of a shaver head according to an embodiment of the present invention before assembly;

fig. 12 is a top view of the assembly of the hinged cover and the housing in the floating structure of the head of the shaver according to the first embodiment of the present invention;

fig. 13 is an exploded view of a floating structure of a head of a shaver according to an embodiment of the present invention;

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

FIG. 15 is an exploded view of a floating structure of a tool tip provided in accordance with a second embodiment of the invention;

FIG. 16 is a longitudinal cross-sectional view of a floating structure of a tool tip provided in accordance with a second embodiment of the invention;

wherein, in the figures, the respective reference numerals:

100-a fuselage; 200-a tool bit floating structure; 210-a flexible stent; 211-annular rim; 220-a limit structure; 300-a support; 310-mounting posts; 320-step surface; 330-a second central aperture; 340-a second annular projection; 350-annular clamping groove; 400-a shaving unit; 410-a housing; 411-mounting holes; 412-a stop; 413-positioning columns; 414-card slot; 415-a stopper; 420-cover plate; 430-a bracket; 440-a cutter head assembly; 500-a first hinge; 510-a first mating groove; 511-a second limiting plane; 512-a positioning block; 513 — a second connection hole; 514-annular flange; 515-a first avoiding groove; 516-semicircular positioning holes; 517-a first spherical cambered surface; 518-a first plane; 600-a second hinge; 610-a mating portion; 611-a first limit plane; 612-a second plane; 620-second mating groove; 621-a first central hole; 622 — first connection hole; 630-a connecting portion; 640-positioning the boss; 641-semi-circular hole; 650-recess; 700-hinged cover plate; 710-a first annular projection; 720-fixture block; 730-a second avoiding groove; 800-an elastic member; 900-connecting piece.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The cutter head floating structure provided by the embodiment of the invention is mainly applied to a shaver, and the shaver is taken as an example to be described in detail below. It should be noted that the floating structure can also be adapted for use with other personal care products, such as hair clippers, shavers, and the like.

The embodiment of the invention provides a cutter head floating structure, which comprises a supporting piece, a shaving unit, a first hinge, a second hinge and an elastic piece. The shaving unit is arranged above the supporting piece, the first hinge is arranged in the shaving unit, a first matching groove is formed in the first hinge, and the bottom of the first matching groove penetrates through the first hinge; the top of the second hinge is provided with a matching part arranged in the first matching groove, a limiting structure which prevents relative rotation and can be separated along the central axis direction of the first matching groove is arranged between the first matching groove and the matching part, a first central hole penetrating to the bottom of the second hinge is arranged in the matching part, and the bottom of the second hinge penetrates through the first hinge and extends into and is fixed in the supporting piece; the elastic piece penetrates through the first matching groove and the first central hole of the second hinge, the top end of the elastic piece abuts against the shaving unit, and the bottom end of the elastic piece abuts against the supporting piece.

Based on the cutter head floating structure, the first hinge is arranged in the shaving unit, and the first hinge and the shaving unit are integrated; the second hinge and the supporting piece are fixedly connected into a whole, the first hinge and the second hinge are in a matching state with the matching part through the matching groove, the two whole bodies can be considered as being in a matching state, and when the limiting structure is not arranged, the two whole bodies can rotate relatively, so that the whole shaver is in a rotating state when the shaver is started and is not used for shaving, and the shaving unit is unstable and inconvenient to shave; therefore, a limiting structure is required to be arranged at a matched part between the two whole bodies, namely the first hinge and the second hinge, but after the limiting structure which is fixed and keeps the relative position between the first hinge and the second hinge unchanged is arranged, the first hinge and the second hinge cannot rotate, so that the shaving unit has poor flexibility, is rigid in contact with skin and has poor use experience during shaving. In the embodiment of the invention, the elastic element is arranged between the first hinge and the second hinge, the limiting structures are separated in the axial direction of the first matching groove by pressing the first hinge, and the separated limiting structures are matched again by the elastic restoring force of the elastic element, so that the limiting structures are continuously and alternately separated and matched according to different shaving forces during shaving, so that the first hinge and the second hinge are rotated or relatively static, and in the separation and matching processes, the floating of the shaving unit in the stretching and shrinking directions of the elastic element is realized by the stretching and shrinking of the elastic element, so that a user obtains good shaving experience.

In practical applications, the above structure can be implemented by different embodiments, and the details of the tool bit floating structure are described below with reference to the accompanying drawings.

Example one

Referring to fig. 1 to 3, a shaver according to an embodiment of the present invention includes a body 100 and a head floating structure 200 provided on the body 100. The cutter head floating structure 200 includes a support member 300, a shaving unit 400 disposed above the support member 300, a first hinge 500 disposed in the shaving unit 400, a second hinge 600 engaged with the first hinge 500, and an elastic member 800. The top end of the second hinge 600 is matched with the first hinge 500, and a rotation-proof limit structure 220 is arranged between the top end and the first hinge 500, and the bottom end of the second hinge 600 is fixedly connected with the support 300. Specifically, the first hinge 500 has a first fitting groove 510 therein, the first fitting groove 510 has a first spherical arc surface 517 therein, a center of sphere of the first spherical arc surface 517 is O, the first fitting groove 510 has a central axis L, and a bottom of the first fitting groove 510 penetrates through the first hinge 500, that is, the first hinge 500 is hollow.

And second hinge 600, its top has the cooperation portion 610 of arranging in first cooperation groove 510, and cooperation portion 610 is spherical, and the outer wall surface of cooperation portion 610 matches with the cambered surface of first spherical cambered surface 517, and like this, when first cooperation groove 510 was arranged in to cooperation portion 610, the outer wall surface of cooperation portion 610 can be better with the laminating of first spherical cambered surface 517. A limiting structure 220 for preventing relative rotation is disposed between the fitting portion 610 and the first fitting groove 510. The second fitting groove 620 is formed in the fitting portion 610, the bottom of the second fitting groove 620 is provided with a first center hole 621 penetrating to the bottom of the second hinge 600, and the bottom of the second hinge 600 penetrates through the first hinge 500 and extends into and is fixed to the supporting member 300, so that the second hinge 600 is fixedly connected with the supporting member 300 into a whole.

Further, in the present embodiment, the shaving unit 400 includes a housing 410 and a hinged cover 700. The housing 410 is formed in a three-piece shape, the center of the housing has a mounting hole 411, the first hinge 500 is fixed to the mounting hole 411 through the hinge cover 700, and the second hinge 600 engaged with the first hinge 500 extends out of the mounting hole 411 and is connected to the supporting member 300. The top end of the elastic member 800 abuts against the hinge cover 700. In the present embodiment, the first hinge 500 is fixed at the installation hole 411 by the hinge cover 700. In other embodiments, the hinge cover 700 may be omitted and the first hinge 500 may be fixed to the mounting hole 411 by using its own structural design or other parts.

The elastic member 800 is penetrated through the first center hole 621, the second engaging groove 620 and the first engaging 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 supporting member 300.

In the non-operating state, the elastic force of the elastic member 800 pushes the hinge cover 700 and the supporting member 300 along the central axis L toward both ends, so that the first hinge 500 fixedly connected to the hinge cover 700 and the second hinge 600 fixedly connected to the supporting member 300 are tightly attached to each other by a spherical arc.

When the shaver is in operation, the shaving unit 400 is in contact with the face and is pressed by the action force of the face, the shaving unit 400 drives the hinge cover plate 700 to move downwards to press the elastic member 800, and the first hinge 500 also moves downwards, when the downward action force is greater than the elastic force of the elastic member 800, the elastic member 800 is compressed, in the process, the rotation-preventing 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 spherical center O of the first spherical cambered surface 517 along with the first hinge 500, and the shaving unit 400 rotates within the range of 360 degrees, in the rotating process, the elastic member 800 is flexibly connected between the shaving unit 400 and the supporting member 300, so that the 360-degree rotation of the shaving unit 400 is smoother; when the shaving unit 400 acts on different parts of the face, the face reacts to the external force of the shaver and changes, when the external force applied to the shaving unit 400 is reduced, that is, the external force is smaller than the elastic force of the elastic member 800, the elastic member 800 elastically returns to push the hinge cover 700 upwards, the first hinge 500 and the shaving unit 400 move upwards, the limiting structure 220 between the first hinge 500 and the second hinge 600 is re-matched to prevent the first hinge 500 and the second hinge 600 from rotating relatively, in the process, the shaving unit 400 floats upwards and downwards along the central axis L, and can adapt to the curve change of the face, and avoid hard contact with the face, so that a more comfortable shaving experience is brought to a user.

Further, in order to facilitate the mutual rotation between the first hinge 500 and the second hinge 600, and simultaneously facilitate the separation of the first hinge 500 from the second hinge 600, the 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 ingenious, i.e., the rotation in the circumferential direction is prevented, and the separation in the axial direction is not affected.

Specifically, referring to fig. 4 to 8, the position-limiting structure 220 includes a first position-limiting plane 611 disposed on the outer wall surface of the fitting portion 610, and a second position-limiting plane 511 disposed in the first fitting groove 510 and capable of fitting with the first position-limiting plane 611. Because the first spherical cambered surface 517 and the outer wall surface of the matching part 610 are both spherical cambered surfaces, the first spherical cambered surface 517 and the matching part 610 can rotate without friction and resistance when being directly matched, the first limiting plane 611 and the second limiting plane 511 are in plane fit, and when the first hinge 500 and the matching part 610 rotate mutually, the first limiting plane 611 and the second limiting plane 511 cannot rotate under the action of friction between the two planes, so that the limiting is realized in the circumferential direction. Meanwhile, the two-plane abutment does not prevent the upward or downward movement of the first hinge 500 in the axial direction.

Specifically, the first stopper plane 611 may be regarded as a plane cut longitudinally along the outer wall surface of the fitting portion 610. Since the first spherical arc surface 517 is an arc surface, in order to facilitate the arrangement of the second limiting plane 511, a positioning block 512 is arranged in the first engaging groove 510, and the second limiting plane 511 is arranged at the inner side of the positioning block 512 toward the center of the first engaging groove 510. In this embodiment, the positioning block 512 is a cubic block structure, and the second limiting plane 511 is a surface of the cube near the inner side.

In this embodiment, there are three first limiting planes 611, and the three first limiting planes 611 are uniformly distributed on the outer wall surface of the matching portion 610; the number of the second limiting planes 511 is three, and the three second limiting planes 511 are uniformly arranged in the first matching groove 510. Through the three groups of plane laminating, the first hinge 500 and the second hinge 600 can be well limited. Moreover, since the top surfaces of the positioning blocks 512 having a cubic shape are also flat, the three positioning blocks 512 are disposed in a triangular shape, and the top surfaces of the three positioning blocks 512 form a stable supporting surface for supporting the hinge cover 700 more reliably. Of course, the number of the first limiting planes 611 and the second limiting planes 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 to each other, they are assembled and fixed by the connecting member 900. Through the assembly of the connector 900, the fixed connection between the second hinge 600 and the support 300 is detachable, which is convenient for disassembly and maintenance, 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 300, in other embodiments, other detachable fixed connection methods, such as a snap connection, may also be adopted.

Specifically, the second fitting groove 620 of the fitting portion 610 of the second hinge 600 has a first connecting hole 622 therein, and the first fitting groove 510 fitted to the fitting portion 610 has a second connecting hole 513 therein corresponding to the first connecting hole 622. The connection member 900 is embodied as a screw. And a mounting post 310 is provided in the support member 300, and a screw hole (not numbered) is provided in the mounting post 310. The screws are screwed into the screw holes of the mounting post 310 through the first and second connection holes 622 and 513. The second hinge 600 is fixed by screwing screws, so that the structure is simple, the processing is convenient, and the assembly is easy.

As shown in fig. 9, the supporting member 300 is substantially cylindrical, the top of the supporting member has an inwardly recessed step surface 320, the step surface 320 is provided with a second central hole 330 penetrating through the supporting member 300, and the mounting post 310 is disposed on the step surface 320, so that the downwardly recessed depth of the step surface 320 fills the height of the mounting post 310, and the mounting post 310 is prevented from protruding out of the top surface of the supporting member 300 to occupy more space or form a connecting gap.

Further, there are three first connection holes 622, three second connection holes 513, three mounting posts 310, and three connection members 900, and the three connection members 900 are disposed in a triangular shape to fixedly connect the second hinge 600 and the support 300. Moreover, for the second hinge 600, the number of the first limiting planes 611 and the number of the first connecting holes 622 arranged thereon are the same, and the number of the first connecting holes 622 and the number of the first limiting planes 611 are three, and the first connecting holes 622 and the first limiting planes 611 are alternately arranged at intervals, that is, one first connecting hole 622 is arranged between two first limiting planes 611, and the first limiting plane 611 is arranged between two first connecting holes 622.

In this embodiment, the top of the second hinge 600 is a matching portion 610, and the bottom thereof has a connecting portion 630, and the connecting portion 630 is specifically 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 cambered 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 matching part 610, so that on one hand, the compactness of the second hinge 600 part is kept, on the other hand, the connecting part 900 can pass through the connecting part 630 when penetrating out of the matching part 610 through the first connecting hole 622, and therefore the matching part 610 and the connecting part 630 of the second hinge 600 are connected into a whole through the connecting part 900, and the unstable situation caused by the fact that the connecting part 630 is separated from the connecting part 630 when only the matching part 610 is connected with the supporting part 300 is avoided. Specifically, a positioning structure for limiting the position of the connection member 900 is disposed on the connection portion 630 corresponding to the first connection hole 622.

Specifically, as shown in fig. 5, the positioning structure includes a positioning boss 640 disposed on an outer wall of the connecting portion 630 and allowing the connecting piece 900 to pass through, and a recess 650 located below the positioning boss 640 and along a height direction of the connecting portion 630 and configured to receive the connecting piece 900. In this embodiment, the positioning boss 640 is provided with a semi-circular hole 641 for the connection member 900 to pass through, or a circular hole may be provided, or the positioning boss 640 is directly designed as a positioning ring for the connection member 900 to pass through.

In this embodiment, the elastic member 800 is preferably a spring. The spring is pre-compressed between the hinge cover 700 and the supporter 300. The spring mounting structure is shown in fig. 3 and 9. The center of the bottom of the hinge cover plate 700 extends around the center hole to form a first annular protrusion 710, meanwhile, a second annular protrusion 340 is disposed on the step surface 320 of the support 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, recesses may be respectively disposed on the bottom of the hinge cover 700 and the step surface 320 of the supporting member 300, and two ends of the spring are respectively disposed in the recesses.

In other embodiments, the spring may be replaced with other retractable, repositionable resilient members. Such as a spring.

Referring to fig. 11 to 13, the shaving unit 400 further includes a cover 420 disposed on the housing 410, a bracket 430 disposed on the cover 420, at least one cutter head assembly 440 (three cutter head assemblies 440 in this embodiment) disposed on the bracket 430, and a transmission structure (not shown) disposed in a space enclosed by the housing 410 and the cover 420 for driving the cutter head assembly 440.

Referring to fig. 4 again, the edge of the first matching groove 510 of the first hinge 500 extends outward to form an annular flange 514, when being installed, the annular flange 514 is overlapped on the edge of the installation hole 411, the edge of the installation hole 411 is provided with at least one stop 412, a first avoiding groove 515 is arranged on the annular flange 514 corresponding to the stop 412, the hinge cover plate 700 is covered on the first matching groove 510, and the edge of the hinge cover plate 700 protrudes outward to form at least one locking block 720 capable of being locked at the stop 412. Thus, the hinge cover plate 700 is fixed on the housing 410 by the clamping of the clamping block 720 and the stop block 412, and meanwhile, the hinge cover plate 700 is covered on the first hinge 500, so that the first hinge 500 is limited between the housing 410 and the hinge cover plate 700, and the first hinge 500, the housing 410 and the hinge cover plate 700 are connected into a whole.

When the first hinge 500 is installed, in order to position quickly, at least one positioning column 413 is further arranged at the edge of the installation hole 411, and a semicircular positioning hole 516 for the at least one positioning column 413 to be clamped into is arranged on the annular flange 514 when the annular flange 514 rotates. The positioning posts 413 and the semicircular positioning holes 516 not only play a role in positioning, but also can support and position the transmission structure in the housing 410.

Further, referring to fig. 14, the stopper 412 is higher than the edge of the mounting hole 411, so that a slot 414 for the fixture block 720 to be inserted into when horizontally rotating is formed in a gap between the stopper 412 and the edge of the mounting hole 411, a limiting block 415 is disposed on one side of the slot 414, when the fixture block 720 rotates at a certain angle in the slot 414, the limiting block 415 abuts against the limiting block 415 and does not rotate any more, at this time, the hinge cover 700 is mounted in place, meanwhile, for the rotation of the hinge cover 700, a second avoiding groove 730 avoiding the stopper 412 is further disposed on the edge of the hinge cover 700, and the fixture block 720 is disposed at the second avoiding groove 730. Thus, during installation, the hinge cover plate 700 is firstly covered on the first hinge 500, specifically, the hinge cover plate 700 is placed on the top surfaces of the three positioning blocks 512, the second avoiding groove 730 corresponds to the fixture block 720, and then the hinge cover plate 700 is rotated, so that the fixture block 720 is rotated into the fixture groove 414 until the fixture block 720 abuts against the position of the limiting block 415, thereby completing the installation of the hinge cover plate 700. At this time, the engaging groove 414 limits the latch 720 in the direction of the central axis L, and the rotation angle of the latch 720 is limited in the circumferential direction by the stopper 415 and the second clearance groove 730.

Preferably, in this embodiment, the number of the stoppers 412 is three, three stoppers 412 are uniformly distributed on the edge of the mounting hole 411, the number of the positioning pillars 413 is also three, and the three positioning pillars 413 and the three stoppers 412 are alternately spaced and uniformly distributed on the edge of the mounting hole 411. That is, a stopper 412 is disposed between two positioning posts 413, and a positioning post 413 is disposed between two stoppers 412. The alternate arrangement of the first hinge 500 makes the fixing of the first hinge more stable and reliable.

In this embodiment, the hinge cover plate 700 is detachably fixed by screwing and snapping, and in other embodiments, the hinge cover plate 700 may also be fixed by screw fixation, adhesive bonding, or ultrasonic welding.

Referring to fig. 3, 9 and 13, in the present embodiment, the floating structure 200 further includes a flexible support 210. The flexible bracket 210 is wrapped outside the second hinge 600. That is, the flexible holder 210 has a hollow cylindrical structure, and the second hinge 600 is located in the hollow structure of the flexible holder 210. Specifically, the top of the flexible support 210 also extends outwards to form an annular convex edge 211, the annular convex edge 211 is disposed at the edge of the mounting hole 411, 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 300 is provided with an annular clamping groove 350, and the bottom of the flexible support 210 is sleeved on the annular clamping groove 350 of the support, so as to fix the top and the bottom of the flexible support 210. The flexible bracket 210 is disposed at this position, so as to shield the exposed portion between the housing 410 and the supporting member 300, thereby improving the appearance of the shaver, protecting the internal components, and supporting the shaving unit 400 to a certain extent.

Example two

Referring to fig. 15 and 16, a floating structure 200 according to a second embodiment of the present invention is substantially the same as the floating structure 200 according to the first embodiment, except that the first engagement groove 510 and the engagement portion 610 have different shapes. Specifically, in the present embodiment, the first fitting groove 510 has a first plane 518 therein, the first plane extends horizontally inward along the bottom edge of the first fitting groove 510, and the surface of the fitting portion 610 has a second plane 612 that fits the first plane 518. The second plane 612 is a bottom plane of the mating portion 610. When the engaging portion 610 of the second hinge 600 extends into the first engaging groove 510 of the first hinge 500, the second plane 612 of the engaging portion 610 overlaps the first plane 518 in the first engaging groove 510, and when the limiting structure 220 is separated, the second plane 612 and the first plane 518 can rotate relative to each other, so that the relative rotation between the first hinge 500 and the second hinge 600 can be realized, and the requirement that the shaving unit 400 rotates within 360 ° in the first embodiment can also be realized.

Other structures not listed in this embodiment are substantially the same as those in the first embodiment, and are not described herein again.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (21)

1. A tool bit floating structure, characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a support member;

a shaving unit disposed above the supporter;

a first hinge provided in the shaving unit, the first hinge having a first engagement groove therein, a bottom of the first engagement groove penetrating the first hinge;

the top of the second hinge is provided with a matching part arranged in the first matching groove, a limiting structure which prevents relative rotation and can be separated along the central axis direction of the first matching groove is arranged between the first matching groove and the matching part, a first central hole penetrating to the bottom of the second hinge is arranged in the matching part, and the bottom of the second hinge penetrates through the first hinge and extends into and is installed in the supporting piece;

the elastic piece penetrates through the first matching groove and the first central hole of the second hinge, the top end of the elastic piece abuts against the shaving unit, and the bottom end of the elastic piece abuts against the supporting piece.

2. The cutter head floating structure of claim 1, wherein: the shaving unit comprises a shell and a hinge cover plate, the shell is provided with a mounting hole, the first hinge is fixed at the mounting hole through the hinge cover plate, the second hinge extends out of the mounting hole and is fixedly connected with the supporting piece, and the top end of the elastic piece abuts against the hinge cover plate.

3. The cutter head floating structure of claim 1, wherein: the first matching groove is internally provided with a first spherical cambered surface, and the surface of the matching part is provided with a second spherical cambered surface matched with the first spherical cambered surface; alternatively, the first fitting groove has a first flat surface therein, and the fitting portion surface has a second flat surface fitted with the first flat surface.

4. The cutter head floating structure of any one of claims 1 to 3, wherein: the limiting structure comprises a first limiting plane arranged on the outer surface of the matching part and a second limiting plane arranged in the first matching groove and capable of being attached to the first limiting plane.

5. The cutter head floating structure of claim 4, wherein: the first matching groove is internally provided with a positioning block, and the second limiting plane is arranged on the inner side of the positioning block and faces to the center of the first matching groove.

6. The cutter head floating structure of claim 4, wherein: the first limiting planes are uniformly distributed on the outer wall surface of the matching part; the second limit planes are multiple and are uniformly arranged in the first matching groove.

7. The cutter head floating structure of claim 1, wherein: the second hinge is fixedly connected with the supporting piece through a connecting piece.

8. The cutter head floating structure of claim 7, wherein: the connecting piece is characterized in that a second matching groove is formed in the matching portion, at least one first connecting hole which is communicated with the second matching groove wall is formed in the second matching groove wall, at least one second connecting hole which corresponds to and is communicated with the first connecting hole is formed in the first matching groove wall, an installing column is arranged in the supporting piece, and the connecting piece is a screw which penetrates through the first connecting hole and the second connecting hole and stretches into the installing column.

9. The cutter head floating structure of claim 8, wherein: the bottom of the second hinge is provided with a connecting part, and a positioning structure used for limiting the connecting piece is arranged on the connecting part corresponding to the first connecting hole.

10. The cutter head floating structure of claim 9, wherein: the positioning structure comprises a positioning boss and a recess, wherein the positioning boss is arranged on the outer wall of the connecting part and can be used for the connecting part to pass through, and the recess is positioned below the positioning boss and is arranged along the height direction of the connecting part and used for accommodating the connecting part.

11. The cutter head floating structure of claim 8, wherein: the top of the support piece is provided with an inwards-concave step face, the step face is provided with a second center hole penetrating through the support piece, the mounting column is arranged on the step face, the step face is provided with an annular bulge positioned at the edge of the two center holes, and the bottom of the elastic piece is sleeved on the annular bulge.

12. The cutter head floating structure of any one of claims 8 to 11, wherein: the quantity of first spacing plane is a plurality of, the quantity of first connecting hole with first spacing plane quantity is the same, two set up one between the first spacing plane first connecting hole.

13. The cutter head floating structure of claim 2, wherein: the edge of mounting hole is equipped with an at least dog, first cooperation groove edge outwards extends and forms annular flange, annular flange is arranged in the mounting hole edge, correspond on the annular flange dog department is equipped with first groove of keeping away, hinge apron lid is located in the first cooperation inslot, just be equipped with on the edge of hinge apron at least one can block in the fixture block of dog department.

14. The cutter head floating structure of claim 13, wherein: the hinge cover plate is characterized in that a clamping groove for clamping the clamping block when the clamping block horizontally rotates is formed between the stop block and the edge of the mounting hole, a limiting block for abutting against the clamping block is arranged on one side of the clamping groove, a second avoidance groove capable of avoiding the stop block is formed in the edge of the hinge cover plate, and the clamping block is arranged at the second avoidance groove.

15. The cutter head floating structure of claim 13 or 14, wherein: the number of the stop blocks is multiple, and the stop blocks are uniformly distributed on the edge of the mounting hole; the hinge cover plate is characterized in that the number of the clamping blocks is multiple, and the clamping blocks are uniformly distributed on the edge of the hinge cover plate.

16. The cutter head floating structure of claim 13, wherein: the edge of the mounting hole is also provided with at least one positioning column, and the annular flange is provided with a semicircular positioning hole for the at least one positioning column to be clamped in when the annular flange rotates.

17. The cutter head floating structure of claim 16, wherein: the positioning columns are multiple, the stop blocks are multiple, and the positioning columns and the stop blocks are alternately spaced and uniformly distributed on the edges of the mounting holes.

18. The cutter head floating structure of claim 2, wherein: the shaving unit further comprises a cover plate arranged on the shell, a support arranged on the cover plate, at least one cutter head component arranged on the support, and a transmission structure arranged in a space enclosed by the shell and the cover plate and used for driving the cutter head component.

19. The cutter head floating structure of claim 18, wherein: the flexible support is wrapped outside the second hinge, the top of the flexible support is arranged in the mounting hole, the first hinge is arranged on the edge of the top of the flexible support in a pressing mode, and the bottom of the flexible support is sleeved on the outer wall of the supporting piece.

20. The cutter head floating structure of claim 19, wherein: the outer wall of the top of the support piece is provided with an annular clamping groove, and the bottom of the flexible support is sleeved on the annular clamping groove.

21. A shaver, comprising a body, characterized in that: the cutter head floating structure of any one of claims 1 to 20 provided on the fuselage.

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