WO2020029014A1 - 一种剃须刀 - Google Patents

一种剃须刀 Download PDF

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Publication number
WO2020029014A1
WO2020029014A1 PCT/CN2018/098979 CN2018098979W WO2020029014A1 WO 2020029014 A1 WO2020029014 A1 WO 2020029014A1 CN 2018098979 W CN2018098979 W CN 2018098979W WO 2020029014 A1 WO2020029014 A1 WO 2020029014A1
Authority
WO
WIPO (PCT)
Prior art keywords
hinge
fixing member
groove
mating
housing
Prior art date
Application number
PCT/CN2018/098979
Other languages
English (en)
French (fr)
Inventor
孟凡迪
邱云峰
Original Assignee
舒可士（深圳）科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 舒可士（深圳）科技有限公司 filed Critical 舒可士（深圳）科技有限公司
Priority to PCT/CN2018/098979 priority Critical patent/WO2020029014A1/zh
Publication of WO2020029014A1 publication Critical patent/WO2020029014A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/14—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the rotary-cutter type; Cutting heads therefor; Cutters therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/38—Details of, or accessories for, hair clippers, or dry shavers, e.g. housings, casings, grips, guards

Definitions

  • the invention belongs to the technical field of personal care, and more particularly, relates to a shaver.
  • FIG. 1 In the field of personal care products, such as electric shavers, most of the structures are shown in Figure 1.
  • the shaving unit 10 'and the supporting handle 20' are fixedly connected, that is, the shaving unit 10 'cannot be opposite to the supporting handle. 20 'movement, and the cutter head located on the shaving unit 10' is driven by an internal transmission structure (not shown) to perform shaving operations.
  • this structure fulfills the shaving requirements, the shaving unit 10 'is When the skin surface moves, the shaving unit 10 'and the skin are stiff. It is completely dependent on the grip of the person to adjust the shaving strength.
  • the shaving unit 10' When the shaving unit 10' is in close contact with the skin, the shaver is pressed by human hands. Loosen it a little, otherwise press it tightly. During the whole shaving process, the hands are in a tense state. After shaving is completed, there may be soreness and the use experience is extremely poor.
  • a shaver is provided to solve the technical problems that the shaving unit of the shaver in the prior art cannot move relative to the supporting structure, has low flexibility, and has poor user experience. technical problem.
  • a shaver which includes a handle and a cutter head assembly provided on the handle.
  • the cutter head assembly and the handle are connected through a floating assembly that can move up and down, and the floating
  • the assembly includes a fixing member fixedly connected to the handle and a floating rotation structure connected between the cutter head assembly and the fixing member.
  • 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.
  • the output shaft passes through the fixing member, and the floating rotating structure is connected to the transmission mechanism. When the floating rotating structure floats, the bottom surface of the housing and the top surface of the fixing member form the included angle.
  • the top of the handle has a mounting slope
  • the bottom surface of the housing and the top surface of the fixing member are parallel to the mounting slope in a natural state.
  • the floating rotation structure includes:
  • a first hinge provided in the housing, and the first hinge has a first mating groove that is penetrated and circular in the first hinge;
  • the second hinge has a fitting portion placed in the first fitting groove on the top, and a relative rotation prevention is provided between the first fitting groove and the fitting portion and can be along the central axis direction of the first fitting groove.
  • a limiting structure with a separate upper part is provided with a circular first central hole penetrating to the bottom of the second hinge, and the bottom of the second hinge extends through the first hinge and is installed in In the fixing member;
  • the elastic member is in the shape of a hollow cylinder, penetrates through the first central groove of the first fitting groove and the second hinge, and both ends of the elastic member can abut against the cutter head assembly, respectively. And the fixing member.
  • the position-limiting structure includes a first position-limiting plane provided on an outer surface of the mating portion and a second position-limiting plane provided in the first mating groove and capable of conforming to the first position-limiting plane.
  • first mating groove has a first spherical arc surface therein, and the surface of the mating portion has a second spherical arc surface mating with the first spherical arc surface; or, the first mating groove has a first spherical arc surface therein.
  • the mating portion is provided with a second mating groove
  • the wall of the second mating groove is provided with at least one first connecting hole penetrating through
  • the first mating groove wall is provided corresponding to the first connecting hole.
  • at least one second connecting hole penetrating through the fixing member is provided with a mounting post, and the second hinge passes through the first connecting hole, the second connecting hole, and a fastener in the mounting post and The fixing members are fixedly connected.
  • the cutter head assembly further includes a hinge cover plate provided in the housing, the bottom of the housing has a mounting hole, and the first hinge is fixed at the mounting hole through the hinge cover plate.
  • the second hinge protrudes from the mounting hole to be fixedly connected to the fixing member, a top end of the elastic member abuts the hinge cover, and a bottom end of the elastic member abuts the fixing member.
  • the edge of the mounting hole is provided with at least one stopper, and the edge of the first mating groove extends outward to form a ring-shaped flange, and the ring-shaped flange is placed on the edge of the mounting hole, and the ring-shaped A first avoidance groove is provided on the flange corresponding to the stopper, the hinge cover plate is disposed in the first fitting groove, and at least one edge of the hinge cover plate is lockable on the hinge cover plate.
  • it further comprises 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 flexible The bottom of the bracket is sleeved on the outer wall of the fixing member.
  • the razor provided by the embodiment of the present invention has the beneficial effect that: in the present invention, a floating rotation structure is provided on the fixing member and the blade head assembly, so that when shaving, the blade head assembly is in the floating rotation structure Driven to float, and when floating, an included angle a between 0 ° -30 ° is formed between the cutter head assembly and the fixed part.
  • the included angle a is 0 °
  • the cutter head assembly is in a natural state and is not affected by external forces.
  • the component and the fixing member are in a parallel state; during shaving, the blade head component is inclined downward by a certain angle under the action of skin pressure. At this time, an angle of 0 ° -30 ° is formed between the blade head component and the fixing member.
  • the blade head assembly can better fit the facial skin after the tilt; and when the external force of the skin disappears, the blade head assembly can be reset by the floating rotation structure. In this way, the blade head assembly Constantly fitting and separating with the skin can better adapt to changes in the facial curve and avoid hard contact with the face, thereby bringing a more comfortable shaving experience to the user.
  • FIG. 1 is a schematic structural diagram of a shaver in the prior art
  • FIG. 2 is a schematic perspective view of a shaver provided by an embodiment of the present invention.
  • FIG. 3 is a front view of a shaver according to an embodiment of the present invention when it is not working;
  • FIG. 4 is a side view of a shaver provided by an embodiment of the present invention when it is not working;
  • FIG. 5 is a front view of a shaver according to an embodiment of the present invention when it is working;
  • FIG. 6 is a front view of the shaver according to an embodiment of the present invention when it is working;
  • FIG. 7 is a side view of the shaver according to an embodiment of the present invention when it is working;
  • FIG. 8 is a second side view of a shaver in operation according to an embodiment of the present invention.
  • FIG. 9 is an assembly cross-sectional view of a cutter head component and a fixing member in a shaver according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a first hinge in a shaver according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a second hinge in a shaver according to an embodiment of the present invention.
  • FIG. 12 is an exploded view of a first hinge, a second hinge, and an elastic member in a shaver according to an embodiment of the present invention before assembly;
  • FIG. 13 is a longitudinal sectional view of a razor according to an embodiment of the present invention after the first hinge and the second hinge are assembled;
  • FIG. 14 is an assembly plan view of a first hinge and a second hinge in a shaver according to an embodiment of the present invention
  • FIG. 15 is a schematic structural diagram of a structural member in a shaver according to an embodiment of the present invention.
  • FIG. 16 is a schematic structural diagram of a hinge cover in a shaver according to an embodiment of the present invention.
  • 17 is a partial schematic view of a stopper in a housing of a shaver provided in an embodiment of the present invention.
  • a component when a component is called “fixed to” or “disposed to” another component, it may be directly on another component or indirectly on the other component.
  • a component When a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.
  • first and second are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as “first” and “second” may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality” is two or more, unless specifically defined otherwise.
  • a shaver 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 and the handle 100 can be moved up and down and can be rotated.
  • 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.
  • An included angle a is formed between the bottom surface and the top surface of the fixing member 300, and the included angle a ranges from 0 ° to 30 °.
  • a floating rotation structure 400 is provided on the fixing member 300 and the cutter head assembly 200, so that when shaving, the cutter head assembly 200 floats under the driving of the floating rotation structure 400, and when floating, the cutter head assembly 200 and An angle a of 0 ° -30 ° is formed between the fixing members 300, as shown in FIGS. 2 and 3.
  • the cutter head assembly 200 is in a natural state and is not affected by external forces.
  • the cutter head assembly 200 It is in a parallel state with the fixing member 300; as shown in FIG. 4 to FIG. 7, during shaving, the blade head assembly 200 is tilted downward by a certain pressure due to the skin pressure.
  • An included angle a of 0 ° -30 ° is formed between the angles.
  • the blade head assembly 200 can better fit the facial skin after the inclination of the blade head assembly 200; and when the external force of the skin disappears, the blade head assembly 200 can The floating rotation structure 400 resets. In this way, the cutter head assembly 200 is continuously attached to and separated from the skin, and can better adapt to changes in the face curve, avoiding hard contact with the face, thereby bringing a more comfortable shaving experience to the user.
  • the cutter head assembly 200 includes a housing 210, at least two shaving units 220 (three shaving units 220 in this embodiment) provided on the housing 210, and a transmission mechanism provided in the housing 210.
  • the handle 100 is provided with a power source (not shown in the figure)
  • the output shaft of the power source passes through the fixing member 300
  • the floating rotation structure 400 is connected to the transmission mechanism
  • the floating rotation structure 400 is floating when the shell
  • the bottom surface of the body 210 and the top surface of the fixing member 300 form an included angle a.
  • the top of the handle 100 has a mounting bevel 110.
  • the bottom surface of the housing 210 and the top surface of the fixing member 300 are parallel to the mounting bevel 110.
  • the bottom surface of the housing 210 and the top surface of the fixing member 300 are also parallel to the mounting inclined surface 110.
  • a switch, an indicator, and the like are provided on the front of the handle 100.
  • the installation bevel 110 faces the person.
  • the shaving unit 220 on the top surface of the housing 210 is inclined like the installation bevel 110.
  • the face is slightly lifted.
  • the skin on the face is also inclined. In this way, the shaving unit 220 can fit more naturally with the skin of a person, and the person can be in a natural state when holding, and it is not necessary to raise the hand to a certain angle.
  • the center line connection between the three shaving units 220 is an equilateral triangle.
  • the entire cutter head assembly 200 may be inclined downward or float upward in the direction where the three shaving units 220 are located.
  • the three shaving units 220 are mainly pressed and floated, and the cutter head assembly 200 can also be pressed anywhere in the circumferential direction of the housing 210 to obtain the above-mentioned fitting and floating experience.
  • the angle between the bottom surface of the housing 210 and the top surface of the fixing member 300 a is the maximum.
  • the maximum value is 30 °.
  • the setting at the critical angle is obtained through multiple simulation experiments and calculations. On the one hand, it guarantees that the shaving unit 220 can still complete the shaving operation under this extreme tilt angle, and at the same time, it also takes into account the startup state of the shaver by mistake. At this time, the angle will not pinch the skin or the hands. In addition, this angle provides sufficient space between the cutter head assembly 200 and the handle 100 to clean the beards that enter between them.
  • the floating rotating structure 400 includes a first hinge 410 disposed in the housing 210, and the first hinge 410 has a first fitting groove 411 therein; the first fitting groove 411 has a first spherical arc therein.
  • the surface 412, the spherical center of the first spherical arc surface 412 is O, the cross section of the first mating groove 411 is circular, and has a central axis L.
  • the bottom of the first mating groove 411 penetrates the first hinge 410, that is, the first hinge 410 is hollow. shape.
  • the top of the second hinge 420 has a mating portion 421 disposed in the first mating groove 411.
  • the mating portion 421 has a spherical shape.
  • the outer wall surface of the mating portion 421 matches the arc surface of the first spherical arc surface 412.
  • a restricting structure is provided between the engaging portion 421 and the first engaging groove 411 to prevent relative rotation.
  • the engaging portion 421 is provided with a second engaging groove 422 therein.
  • a bottom of the second engaging groove 422 is provided with a first center hole 423 penetrating to the bottom of the second hinge 420.
  • the first center hole 423 has a circular cross section and the bottom of the second hinge 420
  • the first hinge 410 extends through the first hinge 410 and is fixed in the fixing member 300. In this way, the second hinge 420 is fixedly connected with the fixing member 300 as a whole.
  • the elastic member 430 has a hollow cylindrical shape, passes through the first center hole 423, the second fitting groove 422, and the first fitting groove 411 of the second hinge 420, and the top end of the elastic member 430 abuts against the bottom of the cutter head assembly 200 The bottom end of the elastic member 430 abuts on the top of the fixing member 300.
  • the cutter head assembly 200 further includes a hinge cover 230 provided in the housing 210.
  • the housing 210 has a mounting hole 211 at the bottom.
  • the first hinge 410 is fixed at the mounting hole 211 through the hinge cover 230 and communicates with the first hinge.
  • the second hinge 420 mated with 410 protrudes from the mounting hole 211 and is fixedly connected to the fixing member 300.
  • the top end of the elastic member 430 abuts the hinge cover 230, and the bottom end of the elastic member 430 abuts the fixing member 300.
  • the first hinge 410 is fixed at the mounting hole 211 through the hinge cover 230.
  • the hinge cover 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 parts.
  • the elastic force of the elastic member 430 pushes the hinge cover 230 and the fixing member 300 to both ends along the central axis L, so that the first hinge 410 fixedly connected to the hinge cover 230 and the fixing member 300 are fixedly connected.
  • the second hinges 420 are closer to each other with a spherical arc surface.
  • the housing 210 drives the hinge cover 230 to move downward to squeeze the elastic member 430, and at the same time, the first hinge 410 also faces When moving downward, when the downward force is greater than the elastic force of the elastic member 430, the elastic member 430 is compressed. In this process, the rotation-preventing limiting structure between the first hinge 410 and the second hinge 420 is separated to make the hinge cover plate 230 and shaving unit 220 can rotate with the first hinge 410 around the spherical center O of the first spherical arc surface 412, so that the cutter head assembly 200 rotates within 360 °.
  • the elastic member 430 is the cutter head assembly
  • the flexible connection between the 200 and the fixing member 300 makes 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 of the face acting on the shaving unit 220 changes,
  • the elastic member 430 elastically recovers and pushes the hinge cover 230 upward, the first hinge 410 and the cutter head assembly 200 move upward, and the first hinge Restriction knot between 410 and second hinge 420 Re-fitting prevents the first hinge 410 and the second hinge 420 from rotating relative to each other.
  • the shaving unit 220 floats up and down along the central axis L, which can better adapt to changes in the face curve and avoid hard contact with the face, thereby giving users Bring a more comfortable experience.
  • the above-mentioned turning of the cutter head assembly 200 is based on that when the cutter head assembly 200 is pressed vertically, the limiting structure between the first hinge 410 and the second hinge 420 is separated, so that the above-mentioned floating effect occurs.
  • 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
  • the elastic member 430 is hollow cylindrical, that is, When it is pressed at any position along the circumferential direction of the housing 210, the hinge cover 230 is also subjected to a downward force at this position. At this time, the elastic member 430 is correspondingly compressed downward at this position.
  • the pressed end is inclined downward, while the opposite end is elastically floated. Therefore, a floating angle as shown in FIG. 5 to FIG. 8 appears. At this floating angle, the cutter head assembly 200 can better Fitting to the skin, the shaving effect is also better. At this time, the limiting structure is not separated, the cutter head assembly 200 cannot rotate, and the shaving unit 220 in a low position can perform shaving operations better when inclined.
  • first matching groove 411 and the matching portion 421 may also adopt other matching shapes.
  • a first plane is provided in the first mating groove 411, the first plane extends horizontally inward along the bottom edge of the first mating groove 411, and a second plane mating with the first plane is provided on the surface of the mating portion 421.
  • the second plane is a bottom plane of the mating portion 421.
  • the restriction structure does not block the first hinge
  • the rotation of 410 is simple and clever in the design of the limiting structure in this embodiment, that is, to prevent rotation in the circumferential direction without affecting separation in the axial direction.
  • the limiting structure includes a first limiting plane 424 provided on the outer wall surface of the mating portion 421 and a second limiting plane 413 provided in the first matching groove 411 and capable of conforming to the first limiting plane 424. Since the first spherical arc surface 412 and the outer wall surface of the mating portion 421 are spherical arc surfaces, they can rotate with each other without friction and resistance when they are directly mated, and between the first limiting plane 424 and the second limiting plane 413 For planar fitting, when the first hinge 410 and the mating portion 421 rotate with each other, the first limit plane 424 and the second limit plane 413 cannot rotate due to the friction between the two planes, thereby achieving limit in the circumferential direction. Bit. At the same time, sticking two planes in the axial direction does not prevent the first hinge 410 from moving up or down.
  • the first limiting plane 424 can be regarded as a plane formed by longitudinal cutting along 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 plane 413, a positioning block 414 is provided in the first matching groove 411, and the second limiting plane 413 is provided on the inner side of the positioning block 414 toward the first The center of the fitting groove 411. In this embodiment, the positioning block 414 has a cubic block structure, and the second limiting plane 413 is a surface inside the cube.
  • first limiting planes 424 there are three first limiting planes 424, and the three first limiting planes 424 are evenly distributed on the outer wall surface of the mating portion 421.
  • second limiting planes 413 Evenly disposed in the first matching groove 411.
  • the position of the first hinge 410 and the second hinge 420 can be restricted well.
  • the top surface of the cube-shaped positioning block 414 is also flat, in this way, a triangular arrangement is formed between the three positioning blocks 414, and the top surfaces of the three positioning blocks 414 form a stable support surface for more reliable support.
  • Hinge cover 230 the number of the first limiting plane 424 and the second limiting plane 413 may also be one, two, or four, or more.
  • the second hinge 420 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.
  • the fixed connection between the second hinge 420 and the fixing member 300 is detachable, so that it is convenient to disassemble and maintain, and it is also convenient to assemble the product during production.
  • other detachable fixed connection methods such as a snap connection, may also be adopted.
  • a first connecting hole 425 is provided in the second engaging groove 422 of the engaging portion 421 of the second hinge 420, and a first engaging hole 411 corresponding to the first connecting hole 425 is disposed in the first engaging groove 411 which is fitted to the engaging portion 421.
  • the fastener 440 is specifically a screw.
  • a mounting post 310 is provided in the fixing member 300, and a screw hole (not labeled) is provided in the mounting 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 mounting post 310.
  • the second hinge 420 is fixed by screwing.
  • the structure is simple, easy to process, and easy to assemble.
  • the fixing member 300 has a substantially cylindrical structure, and the top thereof has a stepped surface 320 recessed inward.
  • the stepped surface 320 is provided with a second central hole mounting post 310 penetrating the fixing member 300 on the stepped surface 320.
  • the depth of the stepped surface 320 recessed downwards fills the height of the mounting post 310, preventing the mounting post 310 from protruding from the top surface of the fixing member 300 and occupying more space or forming a connection gap.
  • first connection holes 425 there are three first connection holes 425, three corresponding second connection holes 415, three corresponding mounting posts 310, three fasteners 440, and three fasteners 440 arranged in a triangle.
  • the second hinge 420 and the fixing member 300 are fixedly connected to be more stable.
  • the number of the first limiting planes 424 and the first connecting holes 425 are the same, both of which are three, and the first connecting holes 425 and the first limiting planes 424 are alternately arranged at intervals. That is, a first connecting hole 425 is provided between the two first limiting planes 424, and a first limiting plane 424 is provided between the two first connecting holes 425.
  • a top portion of the second hinge 420 is a mating portion 421, and a bottom portion has a connection portion 426.
  • the connection portion 426 is specifically a cylindrical structure.
  • the diameter of the cylinder is slightly larger than the diameter of the bottom of the fitting portion 421.
  • the diameter of the cylinder is designed to be slightly larger than the bottom diameter of the fitting portion 421.
  • the fastener 440 can also pass through the connection portion 426 when the fastener 440 penetrates the fitting portion 421 from the first connection hole 425, so that the fitting portion 421 of the second hinge 420 and the connection portion 426 can pass through the fastener 440.
  • the indirect connection is a whole, so as to avoid instability caused by the detachment from the connecting portion 426 when only the mating portion 421 is connected to the fixing member 300.
  • a positioning structure for limiting the fastener 440 is provided on the connecting portion 426 corresponding to the first connecting hole 425.
  • the positioning structure includes a positioning protrusion 427 provided on an outer wall of the connecting portion 426 and through which the fastener 440 can pass, and a positioning protrusion 427 located below the positioning protrusion 427 along the height direction of the connecting portion 426 for receiving the fastener. 440 of depression 428.
  • a semi-circular hole 429 is provided on the positioning boss 427 for the fastener 440 to pass through, or a circular hole may be provided, or the positioning boss 427 is directly designed as a positioning ring for the fastener 440 to pass through. .
  • the elastic member 430 is preferably a spring.
  • the spring is disposed in a pre-compressed manner between the hinge cover 230 and the fixing member 300.
  • the installation structure of the spring is shown in Figure 2.
  • the bottom center of the hinge cover 230 extends around the center hole to form a first ring-shaped protrusion 231.
  • a second ring-shaped protrusion 330 is provided on the step surface 320 of the fixing member 300 and located at the edge of the center hole.
  • the first annular protrusion 231 is provided, and the bottom of the spring is sleeved on the second annular protrusion 330.
  • recessed holes may be provided on the bottom of the hinge cover 230 and the stepped surface 320 of the fixing member 300, and two ends of the spring are respectively disposed in the recessed holes.
  • the spring may be replaced by other retractable and resettable elastic members. Such as shrapnel.
  • the edge of the first fitting groove 411 of the first hinge 410 extends outward to form an annular flange 416.
  • the annular flange 416 is stacked on the edge of the mounting hole 211, and the edge of the mounting hole 211 is provided.
  • There is at least one stopper 212 a first avoidance groove 417 is provided on the annular flange 416 corresponding to the stopper 212, the hinge cover 230 is covered on the first matching groove 411, and the edge of the hinge cover 230 is convex outward
  • At least one latching block 232 that can be locked at the blocking block 212 is extended.
  • the hinge cover 230 is fixed on the housing 210 by the latching of the block 232 and the stopper 212, and at the same time, because the hinge cover 230 is covered on the first hinge 410, the first hinge 410 is restricted. It is located between the housing and the hinge cover 230, so that the first hinge 410, the housing 210 and the hinge cover 230 are connected as a whole.
  • At least one positioning post (not shown in the figure) is provided at the edge of the mounting hole 211 for quick positioning.
  • the annular flange 416 is provided with at least A semi-circular positioning hole 418 is engaged by a positioning post.
  • the positioning post and the semi-circular positioning hole 418 not only play a positioning role, but also support and position the transmission structure in the housing.
  • the position of the stopper 212 is higher than the edge of the mounting hole 211.
  • the gap between the stopper 212 and the edge of the mounting hole 211 forms a card slot that can be locked in when the card block 232 is horizontally rotated 213.
  • a limiting block 214 is provided on one side of the card slot 213. When the card block 232 rotates within the card slot 213 by a certain angle, the stop block 214 does not continue to rotate. At this time, the hinge cover 230 is installed in place.
  • a second avoidance slot 233 for avoiding the stopper 212 is also provided on the edge of the hinge cover 230, and the clamping block 232 is provided at the second avoidance slot 233.
  • the hinge cover 230 is first covered on the first hinge 410.
  • the hinge cover 230 is placed on the top surfaces of the three positioning blocks 414, and the second avoidance groove 233 corresponds to
  • the hinge cover 230 is rotated again, so that the block 232 is rotated into the slot 213 until it stops at the limit block 214 to complete the installation of the hinge cover 230.
  • 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 restricted by the limiting block 214 and the second avoiding groove 233 in the circumferential direction.
  • three stoppers 212 are provided, and the three stoppers 212 are evenly distributed on the edge of the mounting hole 211, and there are three positioning posts.
  • the three positioning posts and the three stoppers 212 are alternately spaced and evenly distributed.
  • a stopper 212 is disposed between the two positioning posts, and a positioning post is disposed between the two stoppers 212.
  • the alternately spaced structure makes the fixing of the first hinge 410 more stable and reliable.
  • the hinge cover 230 is fixed by using the above-mentioned screwing and snap-in detachable method. In other embodiments, the hinge cover 230 may also be fixed by screws, glue, or ultrasonic welding.
  • the floating rotating structure 400 further includes a flexible support 450.
  • the flexible bracket 450 is wrapped around the second hinge 420. That is, the flexible bracket 450 has a hollow cylindrical structure, and the second hinge 420 is located in the hollow structure of the flexible bracket 450. Specifically, the top of the flexible bracket 450 also extends outward to form an annular convex edge, the annular convex edge is placed on the edge of the mounting hole 211, and the annular flange 416 of the first hinge 410 is pressed on the annular convex edge and fixed.
  • the outer wall of the top of the piece 300 is provided with a ring-shaped slot 213, and the bottom of the flexible bracket 450 is sleeved on the ring-shaped slot 213 of the support member, so that the top and bottom of the flexible bracket 450 are fixed.
  • a flexible bracket 450 is provided here to shield the exposed part between the casing and the fixing member 300, thereby improving the appearance effect of the shaver and also protecting the internal components.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dry Shavers And Clippers (AREA)

Abstract

一种剃须刀，包括手柄(100)以及设于手柄(100)上的刀头组件(200)，刀头组件(200)与手柄(100)通过可上下移动且可转动的浮动组件连接，浮动组件包括与手柄(100)固定连接的固定件(300)以及连接于刀头组件(200)与固定件(300)之间的浮动旋转结构(400)，刀头组件(200)在浮动旋转结构(400)的带动下浮动时，刀头组件(200)的底面与固定件(300)的顶面之间形成夹角，夹角的范围为0°-30°。在此角度范围内，刀头组件(200)能与脸部皮肤更好地贴合，且当皮肤外力作用消失后，刀头组件(200)能在浮动旋转结构带动下复位，如此，更能适应脸部曲线变化，避免与脸部的硬性接触。

Description

一种剃须刀 技术领域
本发明属于个人护理技术领域，更具体地说，是涉及一种剃须刀。
 背景技术
在个人护理用品领域，如电动剃须刀中，大部分结构如图1所示，剃须单元10’与支撑手柄20’之间为固定连接，即是剃须单元10’不能相对于支撑手柄20’运动，而位于剃须单元10’上的刀头在内部传动结构(图中未示出)带动下转动进行剃须操作，这种结构虽然实现剃须需求，但是剃须单元10’在皮肤表面移动时，剃须单元10’与皮肤之间是生硬抵触，完全依靠人手持握力来调整剃须力度，当感觉剃须单元10’与皮肤接触较紧时，通过人手将剃须刀按压松一点，反之，则按压紧一点，在整个剃须过程中，手部处于紧张状态，剃须完成后，可能会有酸痛感，使用体验极差。
 技术问题
本发明实施例的目的在于：第一方面，提供一种剃须刀，用以解决现有技术中剃须刀的剃须单元相对支撑结构不能运动、灵活度不高、用户体验差的技术问题技术问题。
 技术解决方案
为解决上述技术问题，本发明实施例采用的技术方案是：
第一方面，提供了一种剃须刀，包括手柄以及设于所述手柄上的刀头组件，所述刀头组件与所述手柄通过可上下移动且可转动的浮动组件连接，所述浮动组件包括与所述手柄固定连接的固定件以及连接于所述刀头组件与所述固定件之间的浮动旋转结构，所述刀头组件在所述浮动旋转结构带动下浮动时所述刀头组件的底面与所述固定件的顶面之间形成夹角，所述夹角的范围为0°-30°。
进一步地，所述刀头组件包括壳体、设于所述壳体上的至少两剃须单元以及设于所述壳体内的传动机构，所述手柄内设有动力源，所述动力源的输出轴穿过所述固定件、所述浮动旋转结构与所述传动机构连接，所述浮动旋转结构浮动时所述壳体底面与所述固定件的顶面形成所述夹角。
进一步地，所述手柄顶部具有安装斜面，所述壳体底面与所述固定件的顶面自然状态时与所述安装斜面平行。
进一步地，所述浮动旋转结构包括，
第一铰链，设于所述壳体内，所述第一铰链内具有贯通的且呈圆形的第一配合槽；
第二铰链，其顶部具有置于所述第一配合槽内的配合部，所述第一配合槽与所述配合部之间设有防止相对转动且可沿所述第一配合槽中心轴线方向上分离的限位结构，所述配合部内设有贯通至所述第二铰链底部的呈圆形的第一中心孔，所述第二铰链的底部穿过所述第一铰链伸入安装于所述固定件中；
弹性件，呈中空圆柱状，穿设于所述第一配合槽及所述第二铰链的第一中心孔内，且所述弹性件的两端可分别抵顶于分别于所述刀头组件及所述固定件上。
进一步地，所述限位结构包括设于所述配合部外表面的第一限位平面以及设于所述第一配合槽内可与所述第一限位平面贴合的第二限位平面。
进一步地，所述第一配合槽内具有第一球形弧面，所述配合部表面具有与所述第一球形弧面配合的第二球形弧面；或者，所述第一配合槽内具有第一平面，所述配合部表面具有与所述第一平面配合的第二平面。
进一步地，所述配合部上设有第二配合槽，所述第二配合槽壁设有贯通的至少一第一连接孔，所述第一配合槽壁设有与所述第一连接孔对应且贯通的至少一第二连接孔，所述固定件上设有安装柱，所述第二铰链通过穿过所述第一连接孔、第二连接孔及所述安装柱内的紧固件与所述固定件固定连接。
进一步地，所述刀头组件还包括设于所述壳体内的铰链盖板，所述壳体底部具有安装孔，所述第一铰链通过所述铰链盖板固定于所述安装孔处，所述第二铰链于所述安装孔处伸出与所述固定件固定连接，所述弹性件的顶端抵接于所述铰链盖板，所述弹性件的底端抵接于所述固定件。
进一步地，所述安装孔的边缘设有至少一挡块，所述第一配合槽边缘向外延伸形成环状凸缘，所述环状凸缘置于所述安装孔边缘，所述环状凸缘上对应所述挡块处设有第一避位槽，所述铰链盖板盖设于所述第一配合槽内，且所述铰链盖板的边缘上设有至少一可卡止于所述挡块处的卡块。
进一步地，还包括一包裹于所述第二铰链外的柔性支架，所述柔性支架的顶部置于所述安装孔，所述第一铰链压设于所述柔性支架的顶部边缘，所述柔性支架的底部套设于所述固定件外壁上。
 有益效果
与现有技术相比，本发明实施例提供的剃须刀的有益效果在于：本发明中，在固定件与刀头组件设置浮动旋转结构，使得在剃须时，刀头组件在浮动旋转结构带动下浮动，且在浮动时，刀头组件与固定件之间形成0°-30°的夹角a，当夹角a为0°时，刀头组件处于自然状态不受外力作用，刀头组件与固定件之间处于平行状态；在剃须时，刀头组件受皮肤压力作用，向下倾斜一定的角度，此时，刀头组件与固定件之间形成0°-30°的夹角a，在此角度范围时，刀头组件的倾斜后能与脸部皮肤更好地贴合；且当皮肤外力作用消失后，刀头组件能在浮动旋转结构带动下复位，如此，刀头组件不断与皮肤贴合、分离，更能适应脸部曲线变化，避免与脸部的硬性接触，从而给用户带来更舒适的剃须体验。
 附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为现有技术中一剃须刀的结构示意图；
图2为本发明实施例提供的剃须刀的立体结构示意图；
图3为本发明实施例提供的剃须刀未工作时的主视图；
图4为本发明实施例提供的剃须刀未工作时的侧视图；
图5为本发明实施例提供的剃须刀工作时的主视图一；
图6为本发明实施例提供的剃须刀工作时的主视图二；
图7为本发明实施例提供的剃须刀工作时的侧视图一；
图8为本发明实施例提供的剃须刀工作时的侧视图二；
图9为本发明实施例提供的剃须刀中刀头组件与固定件的装配剖视图；
图10为本发明实施例提供的剃须刀中第一铰链的结构示意图；
图11为本发明实施例提供的剃须刀中第二铰链的结构示意图；
图12为本发明实施例提供的剃须刀中的第一铰链、第二铰链及弹性件装配前的分解示意图；
图13为本发明实施例提供的剃须刀中第一铰链与第二铰链装配后纵向剖视图；
图14为本发明实施例提供的剃须刀中第一铰链与第二铰链装配俯视图；
图15为本发明实施例提供的剃须刀中结构件的结构示意图；
图16为本发明实施例提供的剃须刀中铰链盖板的结构示意图；
图17为本发明实施例提供的剃须刀的壳体中挡块处的局部示意图；
其中，图中各附图标记：
100-手柄；110-安装斜面；200-刀头组件；210-壳体；211-安装孔；212-挡块；213-卡槽；214-限位块；220-剃须单元；230-铰链盖板；231-第一环状凸起；232-卡块；233-第二避位槽；300-固定件；310-安装柱；320-台阶面；330-第二环状凸起；400-浮动旋转结构；410-第一铰链；411-第一配合槽；412-第一球形弧面；413-第二限位平面；414-定位块；415-第二连接孔；416-环状凸缘；417-第一避位槽；418-半圆形定位孔；420-第二铰链；421-配合部；422-第二配合槽；423-第一中心孔；424-第一限位平面；425-第一连接孔；426-连接部；427定位凸台；428-凹陷；429-半圆形孔；430-弹性件；440-紧固件；450-柔性支架。
 本发明的实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。
需说明的是，当部件被称为“固定于”或“设置于”另一个部件，它可以直接在另一个部件上或者间接在该另一个部件上。当一个部件被称为是“连接于”另一个部件，它可以是直接连接到另一个部件或者间接连接至该另一个部件上。
还需说明的是，本发明实施例的附图中相同或相似的标号对应相同或相似的部件；在本发明的描述中，需要理解的是，若有术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此，附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
为了说明本发明所述的技术方案，以下结合具体附图对本发明提供的一种剃须刀的实现通过具体实施例进行详细说明。
请参考图2、图3，本发明实施例提供的一种剃须刀，包括手柄100以及设于手柄100上的刀头组件200，刀头组件200与手柄100通过可上下移动且可转动的浮动组件连接。而浮动组件包括与手柄100固定连接的固定件300以及连接于刀头组件200与固定件300之间的浮动旋转结构400，刀头组件200在浮动旋转结构400带动下浮动时刀头组件200的底面与固定件300的顶面之间形成夹角a，夹角a的范围为0°-30°。
本发明实施例中，在固定件300与刀头组件200设置浮动旋转结构400，使得在剃须时，刀头组件200在浮动旋转结构400带动下浮动，且在浮动时，刀头组件200与固定件300之间形成0°-30°的夹角a，如图2、图3所示，当夹角a为0°时，刀头组件200处于自然状态不受外力作用，刀头组件200与固定件300之间处于平行状态；如图4至图7，在剃须时，刀头组件200受皮肤压力作用，向下倾斜一定的角度，此时，刀头组件200与固定件300之间形成0°-30°的夹角a，在此角度范围时，刀头组件200的倾斜后能与脸部皮肤更好地贴合；且当皮肤外力作用消失后，刀头组件200能在浮动旋转结构400带动下复位，如此，刀头组件200不断与皮肤贴合、分离，更能适应脸部曲线变化，避免与脸部的硬性接触，从而给用户带来更舒适的剃须体验。
具体地，刀头组件200包括壳体210、设于壳体210上的至少两剃须单元220（本实施例中，剃须单元220为三个），以及设于壳体210内的传动机构（图中未示出），手柄100内设有动力源（图中未示出），动力源的输出轴穿过固定件300、浮动旋转结构400与传动机构连接，浮动旋转结构400浮动时壳体210底面与固定件300的顶面形成夹角a。
进一步地，请再参照图4，手柄100顶部具有安装斜面110，在安装时，壳体210底面与固定件300的顶面与安装斜面110平行，当剃须刀不工作的自然状态下时，壳体210底面与固定件300的顶面也是与安装斜面110平行。手柄100正面设有开关、指示灯等。当正握手柄100时，安装斜面110与人正对，此时，位于壳体210顶面的剃须单元220与安装斜面110一样呈倾斜状态，而在剃须时，脸部微抬时，脸部皮肤也呈倾斜状，这样，剃须单元220能更自然地与人皮肤贴合，人在握持时呈自然状态即可，不需特别地将手抬成一定的角度。
本实施例中，剃须单元220为三个，三个剃须单元220之间的中心线连线呈等边三角形。三个剃须单元220分别与皮肤接触时，整个刀头组件200可分别向三个剃须单元220所在方向向下倾斜或浮起。当然，在剃须时主要由三个剃须单元220方向按压浮动，也可以在壳体210周向的任一处按压刀头组件200，均可获得上述的贴合、浮动体验。
本实施例中，当其中一剃须单元220所在一侧向下倾斜到极限时，如图5至图8所示，此时，壳体210底面与固定件300的顶面之间的夹角a为最大。最大值为30°。设置在临界角度，是通过多次的仿真模拟实验及计算所得，一方面使得在此极限倾斜角度下保证剃须单元220仍能完成剃须操作，同时，也兼顾在误操作剃须刀启动状态时此角度不会夹伤皮肤或手，另外，这个角度为刀头组件200与手柄100之间提供了足够的空间便于清理进入二者之间的胡须。
具体地，参照图9至图14，浮动旋转结构400包括第一铰链410，设于壳体210内，第一铰链410内具有第一配合槽411；第一配合槽411内具有第一球形弧面412，第一球形弧面412的球心为O，第一配合槽411截面呈圆形，其具有中心轴线L，第一配合槽411的底部贯通第一铰链410，即第一铰链410中空状。
而第二铰链420，其顶部具有置于第一配合槽411内的配合部421，配合部421呈球形状，配合部421外壁面与第一球形弧面412的弧面匹配，这样，配合部421置于第一配合槽411时，配合部421的外壁面能更好地与第一球形弧面412贴合。配合部421与第一配合槽411之间设有防止相对转动的限位结构。配合部421内设有第二配合槽422，第二配合槽422底部设有贯通至第二铰链420底部的第一中心孔423，第一中心孔423截面呈圆形，第二铰链420的底部穿过第一铰链410伸入固定于固定件300中，这样，第二铰链420即与固定件300固定连接为一体。
弹性件430，呈中空圆柱状，由第二铰链420的第一中心孔423、第二配合槽422及第一配合槽411穿过，且弹性件430的顶端抵接在刀头组件200的底部，弹性件430的底端抵接在固定件300顶部。
进一步地，刀头组件200还包括设于壳体210内的铰链盖板230，壳体210底部具有安装孔211，第一铰链410通过铰链盖板230固定于安装孔211处，与第一铰链410配合的第二铰链420于安装孔211处伸出与固定件300固定连接，弹性件430的顶端抵接于铰链盖板230，弹性件430的底端抵接于固定件300。在本实施例中，第一铰链410通过铰链盖板230固定于安装孔211处。在其他实施例中，也可以省略铰链盖板230，采用第一铰链410自身结构设计或其他零件将其固定于安装孔211处。
非工作状态下，弹性件430的弹力分别沿中心轴线L向两端推顶铰链盖板230及固定件300，从而使与铰链盖板230固定连接的第一铰链410及与固定件300固定连接的第二铰链420之间更紧密地以球形弧面贴合。
当剃须刀工作时，剃须单元220与脸部接触受脸部作用力挤压时，壳体210带动铰链盖板230向下移动挤压弹性件430，同时第一铰链410也随之向下移动，当向下作用力大于弹性件430的弹力时，弹性件430被压缩，在此过程中，第一铰链410与第二铰链420之间防转动的限位结构分离以使铰链盖板230及剃须单元220可随第一铰链410绕第一球形弧面412的球心O转动，从而实现刀头组件200在360°范围内转动，在转动过程中，弹性件430为刀头组件200与固定件300之间起到柔性连接，使得刀头组件200的360°转动更顺畅；而当剃须单元220作用于脸部不同部位时，脸部反作用于剃须单元220的外力改变，当施加于剃须单元220上的外力减小，即外力小于弹性件430的弹力时，弹性件430弹性回复向上推动铰链盖板230，第一铰链410及刀头组件200向上移动，第一铰链410与第二铰链420之间的限位结构重新配合阻止第一铰链410与第二铰链420相对转动，在此过程中，剃须单元220沿中心轴线L上下浮动，更能适应脸部曲线变化，避免与脸部的硬性接触，从而给用户带来更舒适的使用体验。
上述的使刀头组件200的转动是基于垂直按压刀头组件200时，第一铰链410与第二铰链420之间的限位结构分离，从而出现上述的上下浮动效果。由图9至图13所示，由第一铰链410的第一配合槽411横截面呈圆形，与第二铰链420的配合部421整体大致圆形，且弹性件430呈中空圆柱状，即是在沿壳体210圆周方向任一位置按压时，铰链盖板230也相应地在此位置受向下力的作用，此时弹性件430也相应地在此位置处被向下压缩，故此被按压的一端向下倾斜，而与之相对的另一端则是弹性浮起，因此，会出现如图5至图8所示的浮动角度，在此浮动角度时，刀头组件200能更好地与皮肤贴合，剃须效果也更好，此时，限位结构未分离，刀头组件200不能转动，倾斜向下时处于低位的剃须单元220能更好地进行剃须操作。
需要说明的是，第一配合槽411与配合部421也可以采用其他配合形状。如，第一配合槽411内设置第一平面，第一平面沿第一配合槽411底部边缘向内水平延伸，配合部421表面设置与第一平面配合的第二平面。第二平面为配合部421的底部平面。当第二铰链420的配合部421伸入第一铰链410的第一配合槽411时，配合部421的第二平面叠置在第一配合槽411内的第一平面，当限位结构分离时，第二平面与第一平面之间可以相互转动，从而也可以实现第一铰链410与第二铰链420之间的相对转动。
本实施例中，进一步地，为便于第一铰链410与第二铰链420之间限位不能相互转动，同时也便于第一铰链410与第二铰链420分离时，限位结构不阻挡第一铰链410的转动，本实施例中，限位结构设计的简单、巧妙，即防止圆周方向的转动，又不影响轴向方向的分离。
限位结构包括设于配合部421外壁面上的第一限位平面424以及设于第一配合槽411内可与第一限位平面424贴合的第二限位平面413。由于第一球形弧面412与配合部421外壁面均为球形弧面，二者直接配合时无摩擦无阻力可相互转动，而设置的第一限位平面424与第二限位平面413之间为平面贴合，第一铰链410与配合部421之间相互转动时，第一限位平面424与第二限位平面413受两平面之间摩擦力作用无法转动，从而在圆周方向上实现限位。同时，在轴向上两平面贴合并不妨碍第一铰链410的上移或下移。
具体地，第一限位平面424可看作沿配合部421外壁面纵向切削形成的平面。而由于第一球形弧面412为弧面，为便于设置第二限位平面413，在第一配合槽411内设置定位块414，第二限位平面413设于定位块414的内侧朝向第一配合槽411的中心。本实施例中，定位块414呈立方体块状结构，第二限位平面413即为立方体靠内侧的一个表面。
本实施例中，第一限位平面424为三个，三个第一限位平面424均匀分布于配合部421外壁面；第二限位平面413为三个，三个第二限位平面413均匀设置于第一配合槽411内。通过三组平面贴合，能很好地将第一铰链410与第二铰链420之间进行限位。而且，由于呈立方体状的定位块414顶面也为平面，这样，三个定位块414之间形成三角设置，三个定位块414的顶面即形成稳定的支撑面，用于更可靠地支撑铰链盖板230。当然，第一限位平面424与第二限位平面413的数量也可以为一个、两个，或四个，或更多个等等。
本实施例中，第二铰链420与固定件300固定连接为一体时，通过紧固件440将二者组装固定。通过紧固件440的组装，使得第二铰链420与固定件300之间的固定连接为可拆卸式，这样，便于拆卸维修，也方便产品生产时的组装。当然，在保证第二铰链420与固定件300连接可靠的前提下，在其他实施例中，也可以采用其他可拆卸的固定连接方式，如卡扣连接等。
具体地，第二铰链420的配合部421的第二配合槽422内设有第一连接孔425，与配合部421贴合的第一配合槽411内设有与第一连接孔425对应的第二连接孔415。紧固件440具体为螺钉。而在固定件300内设有安装柱310，安装柱310内设有螺孔（图中未标号）。螺钉穿过第一连接孔425、第二连接孔415旋拧至安装柱310的螺孔内。采用螺钉旋拧的方式固定第二铰链420，结构简单，便于加工，且装配也容易。
如图15所示，固定件300大体呈圆柱状结构，其顶部具有向内凹陷的台阶面320，台阶面320上设有贯通固定件300的第二中心孔安装柱310设于台阶面320上，这样，台阶面320向下凹进的深度填补安装柱310的高度，避免安装柱310凸出于固定件300顶面而占用更多的空间或形成连接缝隙。
进一步地，第一连接孔425为三个，第二连接孔415对应也为三个，安装柱310对应也为三个，紧固件440也为三个，三个紧固件440呈三角形设置将第二铰链420与固定件300固定连接地更稳固。而且，对于第二铰链420而言，其上设置的第一限位平面424与第一连接孔425数量相同，均为三个，第一连接孔425与第一限位平面424交替间隔设置，即是，两个第一限位平面424之间设置一第一连接孔425，两个第一连接孔425之间具有第一限位平面424。
参照图11，本实施例中，第二铰链420的顶部为配合部421，且底部具有连接部426，连接部426具体为圆筒状结构。圆筒的直径略大于配合部421底部直径。由于配合部421内的第二配合槽422的内壁面由下至上是逐渐增大，将圆筒的直径设计呈略大于配合部421底部直径，这样，一方面保持第二铰链420零件的小巧性，另一方面，也使紧固件440由第一连接孔425穿出配合部421时能穿过连接部426，从而通过紧固件440将第二铰链420的配合部421与连接部426之间连接为整体，避免仅配合部421与固定件300连接时与连接部426脱离而造成不稳的情况。具体地，连接部426上对应第一连接孔425处设置用于限位紧固件440的定位结构。
具体地，定位结构包括设于连接部426的外壁上可供紧固件440穿过的定位凸台427，以及位于定位凸台427下方沿连接部426高度方向设置的用于容置紧固件440的凹陷428。本实施例中，在定位凸台427上设置半圆形孔429供紧固件440穿过，也可以设置圆形孔，或者直接将定位凸台427设计为定位环供紧固件440穿过。
本实施例中，弹性件430优选为弹簧。弹簧呈预压缩状设置于铰链盖板230与固定件300之间。弹簧的安装结构如图2所示。铰链盖板230底部中心环绕中心孔延伸形成一第一环状凸起231，同时，在固定件300的台阶面320上且位于中心孔边缘设有第二环状凸起330，弹簧的顶部套设于第一环状凸起231上，弹簧的底部套设于第二环状凸起330上。在其他实施例中，在铰链盖板230底部与固定件300的台阶面320上也可以分别设置凹孔，弹簧的两端分别设置于凹孔内。
在其他实施例里，弹簧也可以采用其它可收缩、可复位的弹性部件替代。如弹片。
请再参照图10，第一铰链410的第一配合槽411边缘向外延伸形成环状凸缘416，在安装时，环状凸缘416叠置于安装孔211边缘，安装孔211的边缘设有至少一挡块212，环状凸缘416上对应挡块212处设有第一避位槽417，铰链盖板230盖设于第一配合槽411，且铰链盖板230的边缘向外凸伸至少一可卡止于挡块212处的卡块232。这样，通过卡块232与挡块212的卡接，将铰链盖板230固定于壳体210上，同时，由于铰链盖板230盖设于第一铰链410上，从而使得第一铰链410被限位于外壳与铰链盖板230之间，使第一铰链410、壳体210及铰链盖板230连接为一整体。
第一铰链410在安装时，为了快速定位，安装孔211边缘还设置有至少一定位柱（图中未示出），环状凸缘416上设有当环状凸缘416转动时可供至少一定位柱卡入的半圆形定位孔418。定位柱与半圆形定位孔418不仅起到定位作用，也可以对外壳内传动结构起到支撑定位作用。
进一步地，参照图16、图17，挡块212位置高于安装孔211边缘，这样，挡块212与安装孔211边缘之间的缝隙即形成可供卡块232水平转动时卡入的卡槽213，在卡槽213的一侧设有限位块214，当卡块232在卡槽213内转动一定角度时抵止于限位块214不再继续转动，此时，铰链盖板230安装到位，同时，为便于铰链盖板230转动，在铰链盖板230边缘还设置有避让挡块212的第二避位槽233，卡块232设置在第二避位槽233处。这样，在安装时，首先将铰链盖板230盖设在第一铰链410上，具体地说，将铰链盖板230置于三个定位块414的顶面上，将第二避位槽233对应卡块232处，再转动铰链盖板230，使卡块232转动至卡槽213内直至抵止在限位块214处即完成铰链盖板230的安装。此时，卡槽213在中心轴L方向上对卡块232限位，而在圆周方向上由限位块214及第二避位槽233限制卡块232的转动角度。
优选地，本实施例中，挡块212设置有三个，三个挡块212均匀分布于安装孔211边缘，定位柱也为三个，三个定位柱与三个挡块212交替间隔且均匀分布于安装孔211边缘。即是，两个定位柱之间设置一挡块212，两个挡块212之间设置一定位柱。这样交替间隔设置的结构，使第一铰链410的固定更稳定、可靠。
在本实施例中，铰链盖板230采用上述旋拧并卡入的可拆卸方式固定，其他实施例中，铰链盖板230也可以采用螺钉固定、胶粘合、或超声波焊接等方式固定。
请再参照图9，本实施例中，浮动旋转结构400还包括一柔性支架450。柔性支架450包裹于第二铰链420外侧。即，柔性支架450呈中空的圆筒状结构，第二铰链420位于柔性支架450中空结构内。具体地，柔性支架450的顶部也向外延伸形成环状凸边，环状凸边置于安装孔211边缘，第一铰链410的环状凸缘416压设于环状凸边上，而固定件300顶部外壁设有环形卡槽213，柔性支架450的底部套设于支撑件环形卡槽213上，从而实现柔性支架450顶部与底部的固定。在此处设置柔性支架450，对外壳与固定件300之间裸露的部分进行遮挡，提升剃须刀的外观效果，也对内部元件起到保护作用。
以上仅为本发明的优选实施例而已，并不用于限制本发明。对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的权利要求范围之内。

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  1. 一种剃须刀，包括手柄以及设于所述手柄上的刀头组件，其特征在于：所述刀头组件与所述手柄通过可上下移动且可转动的浮动组件连接，所述浮动组件包括与所述手柄固定连接的固定件以及连接于所述刀头组件与所述固定件之间的浮动旋转结构，所述刀头组件在所述浮动旋转结构带动下浮动时所述刀头组件的底面与所述固定件的顶面之间形成夹角，所述夹角的范围为0°-30°。
  2. 根据权利要求1所述的剃须刀，其特征在于：所述刀头组件包括壳体、设于所述壳体上的至少两剃须单元以及设于所述壳体内的传动机构，所述手柄内设有动力源，所述动力源的输出轴穿过所述固定件、所述浮动旋转结构与所述传动机构连接，所述浮动旋转结构浮动时所述壳体底面与所述固定件的顶面形成所述夹角。
  3. 根据权利要求2所述的剃须刀，其特征在于：所述手柄顶部具有安装斜面，所述壳体底面与所述固定件的顶面自然状态时与所述安装斜面平行。
  4. 根据权利要求2或3所述的剃须刀，其特征在于：所述浮动旋转结构包括，
    第一铰链，设于所述壳体内，所述第一铰链内具有贯通的且呈圆形的第一配合槽；
    第二铰链，其顶部具有置于所述第一配合槽内的配合部，所述第一配合槽与所述配合部之间设有防止相对转动且可沿所述第一配合槽中心轴线方向上分离的限位结构，所述配合部内设有贯通至所述第二铰链底部的呈圆形的第一中心孔，所述第二铰链的底部穿过所述第一铰链伸入安装于所述固定件中；
    弹性件，呈中空圆柱状，穿设于所述第一配合槽及所述第二铰链的第一中心孔内，且所述弹性件的两端可分别抵顶于分别于所述刀头组件及所述固定件上。
  5. 根据权利要求4所述的剃须刀，其特征在于：所述限位结构包括设于所述配合部外表面的第一限位平面以及设于所述第一配合槽内可与所述第一限位平面贴合的第二限位平面。
  6. 根据权利要求4所述的剃须刀，其特征在于：所述第一配合槽内具有第一球形弧面，所述配合部表面具有与所述第一球形弧面配合的第二球形弧面；或者，所述第一配合槽内具有第一平面，所述配合部表面具有与所述第一平面配合的第二平面。
  7. 根据权利要求4所述的剃须刀，其特征在于：所述配合部上设有第二配合槽，所述第二配合槽壁设有贯通的至少一第一连接孔，所述第一配合槽壁设有与所述第一连接孔对应且贯通的至少一第二连接孔，所述固定件上设有安装柱，所述第二铰链通过穿过所述第一连接孔、第二连接孔及所述安装柱内的紧固件与所述固定件固定连接。
  8. 根据权利要求4所述的剃须刀，其特征在于：所述刀头组件还包括设于所述壳体内的铰链盖板，所述壳体底部具有安装孔，所述第一铰链通过所述铰链盖板固定于所述安装孔处，所述第二铰链于所述安装孔处伸出与所述固定件固定连接，所述弹性件的顶端抵接于所述铰链盖板，所述弹性件的底端抵接于所述固定件。
  9. 根据权利要求8所述的剃须刀，其特征在于：所述安装孔的边缘设有至少一挡块，所述第一配合槽边缘向外延伸形成环状凸缘，所述环状凸缘置于所述安装孔边缘，所述环状凸缘上对应所述挡块处设有第一避位槽，所述铰链盖板盖设于所述第一配合槽内，且所述铰链盖板的边缘上设有至少一可卡止于所述挡块处的卡块。
  10. 根据权利要求4所述的剃须刀，其特征在于：还包括一包裹于所述第二铰链外的柔性支架，所述柔性支架的顶部置于所述安装孔，所述第一铰链压设于所述柔性支架的顶部边缘，所述柔性支架的底部套设于所述固定件外壁上。
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