A razor

Abstract

The present invention provides a shaver, comprising a handle and a cutter head assembly disposed on the handle. The cutter head assembly is connected to the handle through a floating assembly that can move up and down and rotate. The floating assembly includes a fixed member fixedly connected to the handle and a floating rotation structure connected between the cutter head assembly and the fixed member. When the cutter head assembly floats driven by the floating rotation structure, an included angle is formed between the bottom surface of the cutter head assembly and the top surface of the fixed member, and the range of the included angle is 0° - 30°. In the present invention, during shaving, due to the skin pressure, an included angle a of 0° - 30° is formed between the cutter head assembly and the fixed member. Within this angle range, after the cutter head assembly is tilted, it can better fit the facial skin; and when the external skin force disappears, the cutter head assembly can be reset driven by the floating rotation structure. Thus, it can better adapt to the changes in the facial curve and avoid hard contact with the face.

Description

Technical Field

[0001] The present invention relates to the technical field of personal care, and particularly provides a razor. Background Art

[0002] In the field of personal care products, such as electric razors, most structures are as follows Figure 1 As shown, the shaving unit 10' is fixedly connected to the support handle 20', that is, the shaving unit 10' cannot move relative to the support handle 20'. The cutter head located on the shaving unit 10' rotates under the drive of an internal transmission structure (not shown in the figure) for shaving operations. Although this structure meets the shaving requirements, when the shaving unit 10' moves on the skin surface, there is a rigid contact between the shaving unit 10' and the skin, and the shaving force is completely adjusted by the hand-held grip of the person. When it is felt that the shaving unit 10' is in relatively tight contact with the skin, the razor is pressed a little looser by hand, and vice versa, it is pressed tighter. During the entire shaving process, the hand is in a tense state, and there may be a soreness after shaving, and the use experience is extremely poor. Summary of the Invention

[0003] The purpose of the present invention is to provide a razor, aiming to solve the technical problems in the prior art that the shaving unit of the razor cannot move relative to the support structure, has low flexibility, and poor user experience.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a razor, including a handle and a cutter head assembly provided on the handle, the cutter head assembly is connected to the handle through a floating assembly that can move up and down and rotate, the floating assembly includes a fixed part fixedly connected to the handle and a floating rotation structure connected between the cutter head assembly and the fixed part, and an included angle is formed between the bottom surface of the cutter head assembly and the top surface of the fixed part when the cutter head assembly floats driven by the floating rotation structure, and the range of the included angle is 0° - 30°.

[0005] Further, the cutter head assembly includes a housing, at least two shaving units provided on the housing, and a transmission mechanism provided in the housing. A power source is provided in the handle, and an output shaft of the power source passes through the fixed part, the floating rotation structure and is connected to the transmission mechanism, and the included angle is formed between the bottom surface of the housing and the top surface of the fixed part when the floating rotation structure floats.

[0006] Further, the top of the handle has an installation inclined surface, and the bottom surface of the housing and the top surface of the fixed part are parallel to the installation inclined surface in the natural state.

[0007] Further, the floating rotation structure includes

[0008] The first hinge is disposed within the housing, and the first hinge has a through and circular first fitting groove therein;

[0009] The second hinge has a fitting portion at its top disposed within the first fitting groove. A limiting structure for preventing relative rotation and allowing separation along the central axis direction of the first fitting groove is provided between the first fitting groove and the fitting portion. A circular first central hole that penetrates to the bottom of the second hinge is provided within the fitting portion. The bottom of the second hinge passes through the first hinge and extends into and is installed in the fixing member;

[0010] The elastic member is in the shape of a hollow cylinder and is inserted through the first fitting groove and the first central hole of the second hinge, and both ends of the elastic member can respectively abut against the cutter head assembly and the fixing member.

[0011] Further, the limiting structure includes a first limiting plane provided on the outer surface of the fitting portion and a second limiting plane provided within the first fitting groove that can be fitted with the first limiting plane.

[0012] Further, a first spherical arc surface is provided within the first fitting groove, and a second spherical arc surface that mates with the first spherical arc surface is provided on the surface of the fitting portion; alternatively, a first plane is provided within the first fitting groove, and a second plane that mates with the first plane is provided on the surface of the fitting portion.

[0013] Further, a second fitting groove is provided on the fitting portion. At least one first connection hole that penetrates is provided on the wall of the second fitting groove. At least one second connection hole that corresponds to and penetrates the first connection hole is provided on the wall of the first fitting groove. An installation post is provided on the fixing member. The second hinge is fixedly connected to the fixing member through a fastener that passes through the first connection hole, the second connection hole, and the installation post.

[0014] Further, the cutter head assembly further includes a hinge cover plate disposed within the housing. The bottom of the housing has an installation hole. The first hinge is fixed at the installation hole through the hinge cover plate. The second hinge extends out at the installation hole and is fixedly connected to the fixing member. The top end of the elastic member abuts against the hinge cover plate, and the bottom end of the elastic member abuts against the fixing member.

[0015] Further, at least one stop block is provided at the edge of the installation hole. A ring-shaped flange is formed by the edge of the first fitting groove extending outward. The ring-shaped flange is disposed at the edge of the installation hole. A first avoidance groove corresponding to the stop block is provided on the ring-shaped flange. The hinge cover plate covers the first fitting groove, and at least one clamping block that can be clamped at the stop block is provided on the edge of the hinge cover plate.

[0016] Further, it further includes a flexible bracket wrapped around the second hinge. The top of the flexible bracket is placed in the mounting hole, the first hinge is pressed on the top edge of the flexible bracket, and the bottom of the flexible bracket is sleeved on the outer wall of the fixing member.

[0017] Advantages of the present invention:

[0018] In the present invention, a floating rotation structure is provided between the fixing member and the cutter head assembly. During shaving, the cutter head assembly floats driven by the floating rotation structure. When floating, an angle of 0° - 30° is formed between the cutter head assembly and the fixing member. When the angle is 0°, the cutter head assembly is in a natural state without external force, and the cutter head assembly and the fixing member are in a parallel state. During shaving, the cutter head assembly is subjected to the skin pressure and tilts downward by a certain angle. At this time, an angle of 0° - 30° is formed between the cutter head assembly and the fixing member. Within this angle range, the tilted cutter head assembly can better fit the facial skin. And when the external skin force disappears, the cutter head assembly can be reset driven by the floating rotation structure. In this way, the cutter head assembly continuously fits and separates from the skin, can better adapt to the changes in the facial curve, and avoid hard contact with the face, thereby bringing a more comfortable shaving experience to the user. Description of the drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a razor in the prior art;

[0021] Figure 2 It is a three-dimensional structural diagram of the razor provided by the embodiment of the present invention;

[0022] Figure 3 It is the front view of the razor provided by the embodiment of the present invention when not working;

[0023] Figure 4 It is the side view of the razor provided by the embodiment of the present invention when not working;

[0024] Figure 5 It is the front view of the razor provided by the embodiment of the present invention when working Figure 1 ;

[0025] Figure 6 It is the front view of the razor provided by the embodiment of the present invention when working Figure 2 ;

[0026] Figure 7 Side view of the shaver provided by the embodiment of the present invention during operation Figure 1 ;

[0027] Figure 8 Side view of the shaver provided by the embodiment of the present invention during operation Figure 2 ;

[0028] Figure 9 Assembly sectional view of the cutter head assembly and the fixing member in the shaver provided by the embodiment of the present invention;

[0029] Figure 10 Schematic structural view of the first hinge in the shaver provided by the embodiment of the present invention;

[0030] Figure 11 Schematic structural view of the second hinge in the shaver provided by the embodiment of the present invention;

[0031] Figure 12 Exploded schematic view of the first hinge, the second hinge and the elastic member in the shaver provided by the embodiment of the present invention before assembly;

[0032] Figure 13 Longitudinal sectional view of the first hinge and the second hinge in the shaver provided by the embodiment of the present invention after assembly;

[0033] Figure 14 Top view of the first hinge and the second hinge in the shaver provided by the embodiment of the present invention after assembly;

[0034] Figure 15 Schematic structural view of the structural member in the shaver provided by the embodiment of the present invention;

[0035] Figure 16 Schematic structural view of the hinge cover plate in the shaver provided by the embodiment of the present invention;

[0036] Figure 17 Partial schematic view of the housing of the shaver provided by the embodiment of the present invention at the stop block;

[0037] Among them, the reference numerals in the figure:

[0038] 10'- Shaving unit; 20'- Support handle; 100 - Handle; 110 - Mounting bevel; 200 - Blade assembly; 210 - Housing; 211 - Mounting hole; 212 - Stopper; 213 - Card slot; 214 - Limiting block; 220 - Shaving unit; 230 - Hinge cover plate; 231 - First annular protrusion; 232 - Locking block; 233 - Second avoidance groove; 300 - Fixing member; 310 - Mounting post; 320 - Step surface; 330 - Second annular protrusion; 400 - Floating and rotating structure; 410 - First hinge; 411 - First mating groove; 412 - First spherical arc surface; 413 - Second limiting plane; 414 - Positioning block; 415 - Second connection hole; 416 - Annular flange; 417 - First avoidance groove; 418 - Semi-circular positioning hole; 420 - Second hinge; 421 - Mating portion; 422 - Second mating groove; 423 - First central hole; 424 - First limiting plane; 425 - First connection hole; 426 - Connection portion; 427 - Positioning boss; 428 - Depression; 429 - Semi-circular hole; 430 - Elastic member; 440 - Fastening member; 450 - Flexible bracket. Detailed implementation mode

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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 orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0042] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Please refer to Figure 2 、 Figure 3 A razor provided by an embodiment of the present invention includes a handle 100 and a cutter head assembly 200 provided on the handle 100. The cutter head assembly 200 is connected to the handle 100 through a floating assembly that can move up and down and rotate. The floating assembly includes a fixing member 300 fixedly connected to the handle 100 and a floating rotation structure 400 connected between the cutter head assembly 200 and the fixing member 300. When the cutter head assembly 200 floats driven by the floating rotation structure 400, an included angle a is formed between the bottom surface of the cutter head assembly 200 and the top surface of the fixing member 300, and the range of the included angle a is 0° - 30°.

[0044] In an embodiment of the present invention, a floating rotation structure 400 is provided between the fixing member 300 and the cutter head assembly 200, so that during shaving, the cutter head assembly 200 floats driven by the floating rotation structure 400, and when floating, an included angle a of 0° - 30° is formed between the cutter head assembly 200 and the fixing member 300. As Figure 2 、 Figure 3 shown, when the included angle a is 0°, the cutter head assembly 200 is in a natural state without external force, and the cutter head assembly 200 and the fixing member 300 are in a parallel state; as Figures 4 to 7 shown, during shaving, the cutter head assembly 200 is subjected to the skin pressure and tilts downward by a certain angle. At this time, an included angle a of 0° - 30° is formed between the cutter head assembly 200 and the fixing member 300. Within this angle range, the tilted cutter head assembly 200 can better fit the facial skin; and when the external skin force disappears, the cutter head assembly 200 can be reset driven by the floating rotation structure 400. In this way, the cutter head assembly 200 continuously fits and separates from the skin, can better adapt to the changes in the facial curve, and avoid hard contact with the face, thereby bringing a more comfortable shaving experience to the user.

[0045] Specifically, the cutter head assembly 200 includes a housing 210, at least two shaving units 220 (in this embodiment, there are three shaving units 220) provided on the housing 210, and a transmission mechanism (not shown in the figure) provided in the housing 210. A power source (not shown in the figure) is provided in the handle 100. The output shaft of the power source passes through the fixing member 300 and the floating rotation structure 400 and is connected to the transmission mechanism. When the floating rotation structure 400 floats, an included angle a is formed between the bottom surface of the housing 210 and the top surface of the fixing member 300.

[0046] Further, please refer to Figure 4 , the top of the handle 100 has an installation inclined surface 110. During installation, the bottom surface of the housing 210 and the top surface of the fixing member 300 are parallel to the installation inclined surface 110. When the razor is in the natural state without working, the bottom surface of the housing 210 and the top surface of the fixing member 300 are also parallel to the installation inclined surface 110. The front of the handle 100 is provided with a switch, an indicator light, etc. When the handle 100 is held correctly, the installation inclined surface 110 faces the person directly. At this time, the shaving unit 220 located on the top surface of the housing 210 is in an inclined state like the installation inclined surface 110. When shaving, when the face is slightly lifted, the facial skin is also in an inclined state. In this way, the shaving unit 220 can fit the human skin more naturally, and the person can hold it in a natural state without specifically lifting the hand at a certain angle.

[0047] In this embodiment, there are three shaving units 220, and the center line connections between the three shaving units 220 form an equilateral triangle. When the three shaving units 220 are in contact with the skin respectively, the entire cutter head assembly 200 can tilt downward or float in the directions of the three shaving units 220 respectively. Of course, during shaving, it is mainly pressed and floated in the directions of the three shaving units 220. It is also possible to press the cutter head assembly 200 at any position in the circumferential direction of the housing 210, and the above-mentioned fitting and floating experiences can be obtained.

[0048] In this embodiment, when one side where a shaving unit 220 is located tilts downward to the limit, as Figures 5 to 8 shown, at this time, the included angle a between the bottom surface of the housing 210 and the top surface of the fixing member 300 is the largest. The maximum value is 30°. The setting at the critical angle is obtained through multiple simulation experiments and calculations. On the one hand, it ensures that the shaving unit 220 can still complete the shaving operation at this limit inclination angle. At the same time, it also takes into account that this angle will not pinch the skin or hand during the misoperation of the razor startup state. In addition, this angle provides enough space between the cutter head assembly 200 and the handle 100 for cleaning the beard that enters between the two.

[0049] Specifically, refer to Figures 9 to 14, the floating rotation structure 400 includes a first hinge 410 disposed within the housing 210. The first hinge 410 has a first mating groove 411 therein; within the first mating groove 411 is a first spherical arc surface 412, the center of the sphere of the first spherical arc surface 412 being O. The cross-section of the first mating groove 411 is circular, having a central axis L, and the bottom of the first mating groove 411 penetrates through the first hinge 410, that is, the first hinge 410 is hollow.

[0050] And a second hinge 420, the top of which has a mating portion 421 disposed within the first mating groove 411. The mating portion 421 is spherical in shape, and the outer wall surface of the mating portion 421 matches the arc surface of the first spherical arc surface 412. In this way, when the mating portion 421 is disposed within the first mating groove 411, the outer wall surface of the mating portion 421 can better fit with the first spherical arc surface 412. A limiting structure for preventing relative rotation is provided between the mating portion 421 and the first mating groove 411. A second mating groove 422 is provided within the mating portion 421, and a first central hole 423 that penetrates through to the bottom of the second hinge 420 is provided at the bottom of the second mating groove 422. The cross-section of the first central hole 423 is circular, and the bottom of the second hinge 420 passes through the first hinge 410 and extends into and is fixed to the fixing member 300. In this way, the second hinge 420 is fixedly connected to the fixing member 300 as a single entity.

[0051] The elastic member 430 is in the shape of a hollow cylinder and passes through the first central hole 423, the second mating groove 422, and the first mating groove 411 of the second hinge 420. Moreover, the top end of the elastic member 430 abuts against the bottom of the cutter head assembly 200, and the bottom end of the elastic member 430 abuts against the top of the fixing member 300.

[0052] Furthermore, the cutter head assembly 200 further includes a hinge cover plate 230 disposed within the housing 210. The bottom of the housing 210 has a mounting hole 211, and the first hinge 410 is fixed at the mounting hole 211 through the hinge cover plate 230. The second hinge 420 that mates with the first hinge 410 extends out at the mounting hole 211 and is fixedly connected to the fixing member 300. The top end of the elastic member 430 abuts against the hinge cover plate 230, and the bottom end of the elastic member 430 abuts against the fixing member 300. In this embodiment, the first hinge 410 is fixed at the mounting hole 211 through the hinge cover plate 230. In other embodiments, the hinge cover plate 230 may also be omitted, and the first hinge 410 may be fixed at the mounting hole 211 by using its own structural design or other components.

[0053] In the non-working state, the elastic force of the elastic member 430 pushes against the hinge cover plate 230 and the fixing member 300 respectively along the central axis L, so that the first hinge 410 fixedly connected to the hinge cover plate 230 and the second hinge 420 fixedly connected to the fixing member 300 fit more closely with each other in a spherical arc surface.

[0054] When the shaver is working, when the shaving unit 220 contacts the face and is squeezed by the force of the face, the housing 210 drives the hinge cover plate 230 to move downward to squeeze the elastic member 430. At the same time, the first hinge 410 also moves downward. When the downward force is greater than the elastic force of the elastic member 430, the elastic member 430 is compressed. During this process, the anti-rotation limit structure between the first hinge 410 and the second hinge 420 is separated so that the hinge cover plate 230 and the shaving unit 220 can rotate around the center O of the first spherical arc surface 412 with the first hinge 410, thereby realizing the 360° rotation of the cutter head assembly 200. During the rotation process, the elastic member 430 plays a flexible connection between the cutter head assembly 200 and the fixing member 300, making the 360° rotation of the cutter head assembly 200 smoother; and when the shaving unit 220 acts on different parts of the face, the external force acting on the shaving unit 220 by the face changes. When the external force applied to the shaving unit 220 decreases, that is, when the external force is less than the elastic force of the elastic member 430, the elastic member 430 elastically returns and pushes the hinge cover plate 230 upward, and the first hinge 410 and the cutter head assembly 200 move upward. The limit structure between the first hinge 410 and the second hinge 420 is re-mated to prevent the relative rotation of the first hinge 410 and the second hinge 420. During this process, the shaving unit 220 floats up and down along the central axis L, which can better adapt to the change of the face curve and avoid hard contact with the face, thus bringing a more comfortable use experience to the user.

[0055] The rotation of the cutter head assembly 200 described above is based on the separation of the limit structure between the first hinge 410 and the second hinge 420 when the cutter head assembly 200 is vertically pressed, thereby presenting the above-mentioned up and down floating effect. As Figures 9 to 13 shown, the cross-section of the first mating groove 411 of the first hinge 410 is circular, the mating portion 421 of the second hinge 420 is generally circular as a whole, and the elastic member 430 is in a hollow cylindrical shape. That is, when pressed at any position along the circumferential direction of the housing 210, the hinge cover plate 230 is correspondingly subjected to a downward force at this position. At this time, the elastic member 430 is also correspondingly compressed downward at this position. Therefore, the pressed end tilts downward, and the opposite end elastically floats. Therefore, there will be a floating angle as Figures 5 to 8 shown. At this floating angle, the cutter head assembly 200 can better fit the skin, and the shaving effect is also better. At this time, the limit structure is not separated, and the cutter head assembly 200 cannot rotate. The shaving unit 220 at the lower position when tilted downward can better perform the shaving operation.

[0056] It should be noted that the first mating groove 411 and the mating portion 421 can also adopt other mating shapes. For example, a first flat surface is provided in the first mating groove 411, and the first flat surface extends horizontally inward along the bottom edge of the first mating groove 411. A second flat surface that mates with the first flat surface is provided on the surface of the mating portion 421. The second flat surface is the bottom flat surface of the mating portion 421. When the mating portion 421 of the second hinge 420 extends into the first mating groove 411 of the first hinge 410, the second flat surface of the mating portion 421 is stacked on the first flat surface in the first mating groove 411. When the limiting structure is separated, the second flat surface and the first flat surface can rotate relative to each other, thereby realizing the relative rotation between the first hinge 410 and the second hinge 420.

[0057] In this embodiment, further, to facilitate the limitation that the first hinge 410 and the second hinge 420 cannot rotate relative to each other, and at the same time, to facilitate that when the first hinge 410 and the second hinge 420 are separated, the limiting structure does not block the rotation of the first hinge 410. In this embodiment, the limiting structure is designed simply and ingeniously, which can prevent rotation in the circumferential direction and does not affect separation in the axial direction.

[0058] The limiting structure includes a first limiting flat surface 424 provided on the outer wall surface of the mating portion 421 and a second limiting flat surface 413 provided in the first mating groove 411 and capable of fitting with the first limiting flat surface 424. Since both the first spherical arc surface 412 and the outer wall surface of the mating portion 421 are spherical arc surfaces, there is no friction and no resistance when they are directly mated and they can rotate relative to each other. However, the first limiting flat surface 424 and the second limiting flat surface 413 are in plane contact. When the first hinge 410 and the mating portion 421 rotate relative to each other, the first limiting flat surface 424 and the second limiting flat surface 413 cannot rotate due to the frictional force between the two flat surfaces, thereby realizing limitation in the circumferential direction. At the same time, the fitting of the two flat surfaces in the axial direction does not prevent the upward or downward movement of the first hinge 410.

[0059] Specifically, the first limiting flat surface 424 can be regarded as a flat surface formed by longitudinally cutting the outer wall surface of the mating portion 421. Since the first spherical arc surface 412 is an arc surface, in order to facilitate the setting of the second limiting flat surface 413, a positioning block 414 is provided in the first mating groove 411, and the second limiting flat surface 413 is provided on the inner side of the positioning block 414 facing the center of the first mating groove 411. In this embodiment, the positioning block 414 has a cubic block structure, and the second limiting flat surface 413 is one surface of the cube on the inner side.

[0060] In this embodiment, there are three first limiting planes 424, which are evenly distributed on the outer wall surface of the fitting part 421; there are three second limiting planes 413, which are evenly arranged in the first fitting groove 411. Through the fitting of the three groups of planes, the first hinge 410 and the second hinge 420 can be well limited. Moreover, since the top surface of the cubic positioning block 414 is also a plane, in this way, a triangular arrangement is formed among the three positioning blocks 414, and the top surfaces of the three positioning blocks 414 form a stable supporting surface for more reliably supporting the hinge cover plate 230. Of course, the number of the first limiting plane 424 and the second limiting plane 413 can also be one, two, four, or more, etc.

[0061] In this embodiment, when the second hinge 420 is fixedly connected to the fixing member 300 as a whole, the two are assembled and fixed by the fastener 440. Through the assembly of the fastener 440, the fixed connection between the second hinge 420 and the fixing member 300 is detachable. In this way, it is convenient for disassembly and repair, and also convenient for assembly during product production. Of course, on the premise of ensuring the reliable connection between the second hinge 420 and the fixing member 300, in other embodiments, other detachable fixed connection methods, such as snap connection, etc., can also be adopted.

[0062] Specifically, a first connection hole 425 is provided in the second fitting groove 422 of the fitting part 421 of the second hinge 420, and a second connection hole 415 corresponding to the first connection hole 425 is provided in the first fitting groove 411 that fits with the fitting part 421. The fastener 440 is specifically a screw. And an installation post 310 is provided in the fixing member 300, and a screw hole (not labeled in the figure) is provided in the installation post 310. The screw passes through the first connection hole 425 and the second connection hole 415 and is screwed into the screw hole of the installation post 310. The second hinge 420 is fixed by the way of screwing the screw, which has a simple structure, is convenient for processing, and is also easy to assemble.

[0063] As Figure 15 shown, the fixing member 300 is generally in a cylindrical structure, and its top has a stepped surface 320 that is recessed inward. The second central hole penetrating the fixing member 300 and the installation post 310 are provided on the stepped surface 320. In this way, the depth of the downward recess of the stepped surface 320 fills the height of the installation post 310, avoiding the installation post 310 protruding from the top surface of the fixing member 300 and occupying more space or forming a connection gap.

[0064] Further, there are three first connection holes 425, correspondingly three second connection holes 415, correspondingly three mounting posts 310, and also three fasteners 440. The three fasteners 440 are arranged in a triangle to fixedly connect the second hinge 420 and the fixing member 300 more firmly. Moreover, for the second hinge 420, the number of the first limiting planes 424 provided thereon is the same as that of the first connection holes 425, both being three. The first connection holes 425 and the first limiting planes 424 are alternately arranged at intervals. That is, one first connection hole 425 is arranged between two first limiting planes 424, and there is a first limiting plane 424 between two first connection holes 425.

[0065] Referring to Figure 11 , in this embodiment, the top of the second hinge 420 is a mating portion 421, and the bottom has a connecting portion 426. The connecting portion 426 is specifically a cylindrical structure. The diameter of the cylinder is slightly larger than the bottom diameter of the mating portion 421. Since the inner wall surface of the second mating groove 422 in the mating portion 421 gradually increases from bottom to top, the diameter of the cylinder is designed to be slightly larger than the bottom diameter of the mating portion 421. In this way, on the one hand, the small size of the second hinge 420 part is maintained, and on the other hand, when the fastener 440 passes through the first connection hole 425 and the mating portion 421, it can pass through the connecting portion 426, so that the mating portion 421 and the connecting portion 426 of the second hinge 420 are connected as a whole through the fastener 440, avoiding the unstable situation caused by the separation of the connecting portion 426 when only the mating portion 421 is connected to the fixing member 300. Specifically, a positioning structure for limiting the fastener 440 is provided at the position corresponding to the first connection hole 425 on the connecting portion 426.

[0066] Specifically, the positioning structure includes a positioning boss 427 provided on the outer wall of the connecting portion 426 for the fastener 440 to pass through, and a recess 428 located below the positioning boss 427 and arranged along the height direction of the connecting portion 426 for accommodating the fastener 440. In this embodiment, a semi-circular hole 429 is provided on the positioning boss 427 for the fastener 440 to pass through, or a circular hole can be provided, or the positioning boss 427 can be directly designed as a positioning ring for the fastener 440 to pass through.

[0067] In this embodiment, the elastic member 430 is preferably a spring. The spring is arranged in a pre-compressed state between the hinge cover plate 230 and the fixing member 300. The installation structure of the spring is as Figure 2As shown, a first annular protrusion 231 is formed around the center hole at the bottom center of the hinge cover plate 230. At the same time, a second annular protrusion 330 is provided on the step surface 320 of the fixing member 300 and at the edge of the center hole. The top of the spring is sleeved on the first annular protrusion 231, and the bottom of the spring is sleeved on the second annular protrusion 330. In other embodiments, concave holes may be respectively provided on the bottom of the hinge cover plate 230 and the step surface 320 of the fixing member 300, and both ends of the spring are respectively arranged in the concave holes.

[0068] In other embodiments, the spring may also be replaced by other elastic components that can be contracted and reset, such as a spring piece.

[0069] Please refer to Figure 10 , a ring flange 416 extends outward from the edge of the first fitting groove 411 of the first hinge 410. During installation, the ring flange 416 is stacked on the edge of the installation hole 211. At least one stopper 212 is provided at the edge of the installation hole 211. A first avoidance groove 417 is provided on the ring flange 416 corresponding to the stopper 212. The hinge cover plate 230 is covered on the first fitting groove 411, and at least one engaging block 232 that can be engaged with the stopper 212 protrudes outward from the edge of the hinge cover plate 230. In this way, through the engagement of the engaging block 232 and the stopper 212, the hinge cover plate 230 is fixed to the housing 210. At the same time, since the hinge cover plate 230 is covered on the first hinge 410, the first hinge 410 is limited between the outer shell and the hinge cover plate 230, so that the first hinge 410, the housing 210, and the hinge cover plate 230 are connected as a whole.

[0070] When the first hinge 410 is installed, in order to quickly position, at least one positioning post (not shown in the figure) is further provided at the edge of the installation hole 211, and a semi-circular positioning hole 418 for at least one positioning post to be inserted into is provided on the ring flange 416 when the ring flange 416 rotates. The positioning post and the semi-circular positioning hole 418 not only play a positioning role, but also can play a supporting and positioning role for the transmission structure inside the outer shell.

[0071] Furthermore, refer to Figure 16 , Figure 17, the position of the stopper 212 is higher than the edge of the mounting hole 211. In this way, the gap between the stopper 212 and the edge of the mounting hole 211 forms a clamping groove 213 for the clamping block 232 to horizontally rotate and engage. A limiting block 214 is provided on one side of the clamping groove 213. When the clamping block 232 rotates a certain angle in the clamping groove 213, it abuts against the limiting block 214 and stops rotating. At this time, the hinge cover plate 230 is installed in place. At the same time, for the convenience of the rotation of the hinge cover plate 230, a second avoidance groove 233 for avoiding the stopper 212 is also provided at the edge of the hinge cover plate 230, and the clamping block 232 is arranged at the second avoidance groove 233. In this way, during installation, first cover the hinge cover plate 230 on the first hinge 410. Specifically, place the hinge cover plate 230 on the top surfaces of the three positioning blocks 414, align the second avoidance groove 233 with the clamping block 232, and then rotate the hinge cover plate 230 to make the clamping block 232 rotate into the clamping groove 213 until it abuts against the limiting block 214, thus completing the installation of the hinge cover plate 230. At this time, the clamping groove 213 limits the clamping block 232 in the direction of the central axis L, and the rotation angle of the clamping block 232 is limited by the limiting block 214 and the second avoidance groove 233 in the circumferential direction.

[0072] Preferably, in this embodiment, there are three stoppers 212, and the three stoppers 212 are evenly distributed on the edge of the mounting hole 211. There are also three positioning posts, and the three positioning posts and the three stoppers 212 are alternately spaced and evenly distributed on the edge of the mounting hole 211. That is, one stopper 212 is arranged between two positioning posts, and one positioning post is arranged between two stoppers 212. This alternately spaced structure makes the fixation of the first hinge 410 more stable and reliable.

[0073] In this embodiment, the hinge cover plate 230 is fixed in the above-mentioned detachable manner of screwing and clamping. In other embodiments, the hinge cover plate 230 can also be fixed by means of screws, glue bonding, or ultrasonic welding.

[0074] Please refer to again Figure 9 , in this embodiment, the floating rotation structure 400 further includes a flexible bracket 450. The flexible bracket 450 is wrapped around the outside of the second hinge 420. That is, the flexible bracket 450 has a hollow cylindrical structure, and the second hinge 420 is located inside the hollow structure of the flexible bracket 450. Specifically, the top of the flexible bracket 450 also extends outward to form a ring-shaped convex edge, and the ring-shaped convex edge is placed on the edge of the mounting hole 211. The ring-shaped flange 416 of the first hinge 410 is pressed on the ring-shaped convex edge, and the outer wall of the top of the fixing member 300 is provided with an annular clamping groove 213. The bottom of the flexible bracket 450 is sleeved on the annular clamping groove 213 of the support member, so as to realize the fixation of the top and bottom of the flexible bracket 450. The flexible bracket 450 is provided here to cover the exposed part between the housing and the fixing member 300, improve the appearance effect of the razor, and also play a role in protecting the internal components.

[0075] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A razor, comprising a handle and a blade assembly provided on the handle, characterized in that: The cutter head assembly is connected to the handle through a floating assembly that can move up and down and rotate. The floating assembly includes a fixed part fixedly connected to the handle and a floating rotation structure connected between the cutter head assembly and the fixed part. When the cutter head assembly floats driven by the floating rotation structure, an included angle is formed between the bottom surface of the cutter head assembly and the top surface of the fixed part, and the range of the included angle is 0° - 30°; the cutter head assembly includes a housing; The floating rotation structure includes, a first hinge disposed inside the housing. The first hinge has a through first fitting groove, and the bottom of the first fitting groove penetrates through the first hinge; a second hinge, the top of which has a fitting part placed inside the first fitting groove. A limiting structure for preventing relative rotation and separable along the central axis direction of the first fitting groove is provided between the first fitting groove and the fitting part. A first central hole penetrating to the bottom of the second hinge is provided inside the fitting part, and the bottom of the second hinge passes through the first hinge and extends into and is installed in the fixed part; an elastic member inserted into the first fitting groove and the first central hole of the second hinge, and both ends of the elastic member can respectively abut against the cutter head assembly and the fixed part.

2. The razor according to claim 1, characterized in that: The cutter head assembly includes at least two shaving units disposed on the housing and a transmission mechanism disposed inside the housing. A power source is disposed inside the handle, and an output shaft of the power source passes through the fixed part, the floating rotation structure and is connected to the transmission mechanism. When the floating rotation structure floats, the included angle is formed between the bottom surface of the housing and the top surface of the fixed part.

3. The razor according to claim 2, wherein: The top of the handle has an installation inclined surface, and the bottom surface of the housing and the top surface of the fixed part are parallel to the installation inclined surface in the natural state.

4. The shaving razor according to claim 2 or 3, characterized in that: The first fitting groove is circular; the first central hole is circular; the elastic member is in a hollow cylindrical shape; a switch is provided on the front surface of the handle.

5. The razor according to claim 4, characterized in that: The limiting structure includes a first limiting plane disposed on the outer surface of the fitting part and a second limiting plane disposed inside the first fitting groove and capable of fitting with the first limiting plane.

6. The razor according to claim 4, characterized in that: The first fitting groove has a first spherical arc surface, and the surface of the fitting part has a second spherical arc surface that cooperates with the first spherical arc surface; or, the first fitting groove has a first plane, and the surface of the fitting part has a second plane that cooperates with the first plane.

7. The shaver according to claim 4, characterized in that: The fitting part is provided with a second fitting groove, at least one first connection hole penetrating through the wall of the second fitting groove is provided, at least one second connection hole corresponding to and penetrating through the wall of the first fitting groove is provided, and an installation post is provided on the fixed part. The second hinge is fixedly connected to the fixed part through a fastener passing through the first connection hole, the second connection hole and the inside of the installation post.

8. The shaver according to claim 4, wherein: The cutter head assembly further includes a hinge cover plate disposed inside the housing. The bottom of the housing has an installation hole, and the first hinge is fixed at the installation hole through the hinge cover plate. The second hinge extends out at the installation hole and is fixedly connected to the fixed part. The top end of the elastic member abuts against the hinge cover plate, and the bottom end of the elastic member abuts against the fixed part.

9. The shaving razor according to claim 8, wherein: At least one stopper is provided at the edge of the mounting hole. An annular flange extends outward from the edge of the first fitting groove. The annular flange is placed at the edge of the mounting hole. A first relief groove is provided on the annular flange corresponding to the stopper. The hinge cover plate is covered in the first fitting groove, and at least one locking block capable of being locked at the stopper is provided on the edge of the hinge cover plate.

10. The shaving razor according to claim 8, wherein: It further includes a flexible bracket wrapped around the second hinge. The top of the flexible bracket is placed in the mounting hole. The first hinge is pressed against the top edge of the flexible bracket. The bottom of the flexible bracket is sleeved on the outer wall of the fixing member.

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