CN109968412B - Cutter head floating structure and personal care device - Google Patents
Cutter head floating structure and personal care device Download PDFInfo
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- CN109968412B CN109968412B CN201910171792.1A CN201910171792A CN109968412B CN 109968412 B CN109968412 B CN 109968412B CN 201910171792 A CN201910171792 A CN 201910171792A CN 109968412 B CN109968412 B CN 109968412B
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- 238000005520 cutting process Methods 0.000 claims abstract description 70
- 230000009471 action Effects 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 4
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000013011 mating Effects 0.000 description 27
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000001815 facial effect Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 208000019300 CLIPPERS Diseases 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
- B26B19/146—Complete cutting head being movable
Abstract
A tool bit floating structure and personal care device, the tool bit floating structure includes the cutting unit; the first hinge is connected with the cutting unit and is internally provided with a first matching groove; the top of the second hinge is provided with a matching part arranged in the first matching groove, and the bottom of the second hinge penetrates through the first hinge to extend away from the cutting unit; and the limiting structure is used for preventing the first hinge and the second hinge from rotating mutually. When the cutting unit works under the extrusion of skin, the matching part is axially separated from the first matching groove, the first hinge drives the cutting unit to float within a 360-degree range, when the external force applied to the cutting unit is reduced, the limiting structure prevents the first hinge and the second hinge from rotating mutually, so that the vertical floating of the cutting unit is realized, the face curve change can be more adapted, and more comfortable use experience is brought to a user.
Description
Technical Field
The invention relates to the technical field of personal care products, in particular to a tool bit floating structure and a personal care device.
Background
In personal care product field, for example in the electronic personal care device, be fixed connection between most cutting unit and the bearing structure, be that cutting unit can not move for bearing structure, and the tool bit subassembly that is located on the cutting unit rotates under the drive of inside transmission structure and shave the operation, this kind of structure is realized the demand of shaving, but cutting unit is when skin surface removes, is hard conflict between cutting unit and the skin, relies on the handheld grip of hand to adjust the dynamics of shaving completely, when feeling cutting unit and skin contact are tighter, press the personal care device loose one point through the staff, otherwise, press tight one point, in the whole shaving process, the hand is in tension state, after shaving, probably have the sour pain feel, the experience is extremely poor.
In order to solve the problem, some cutting units utilize a cross universal coupling to realize rotation with a supporting structure, but the structure is complex to assemble, the reject ratio is increased, the flexibility of the rotating structure is not high, the self-adaptive capacity between the cutting unit and the skin is not fundamentally solved, and good user experience cannot be provided.
In addition, a floating structure of a cutter head is proposed in 201810828791.5, which includes a shaving unit, a first hinge, a second hinge, and a spring, and the floating of the shaving unit up and down in the shaving process is realized by the spring. However, this structure requires a spring and is complicated, resulting in a complex structure, complex assembly and high cost of the entire shaver.
Disclosure of Invention
The invention aims to provide a cutter head floating structure, which aims to solve the technical problems that a cutting unit in a personal care device in the prior art is complex in structure of floating up and down through a spring, complex in assembly and high in cost.
In order to achieve the above purpose, the invention adopts the following technical scheme: a tool bit floating structure comprising:
A cutting unit;
The first hinge is connected with the cutting unit, a first matching groove is formed in the first hinge, and the bottom of the first matching groove penetrates through the first hinge;
the top of the second hinge is provided with a matching part arranged in the first matching groove, the matching part and the first matching groove can be axially separated under the action of external force, and the bottom of the second hinge penetrates through the first hinge and extends in a direction away from the cutting unit;
and the limiting structure is used for preventing the first hinge and the second hinge from rotating mutually.
Preferably, the first hinge is a plastic part capable of being elastically deformed.
Further, the cutting unit comprises a shell and a hinge cover plate, the shell is provided with a mounting hole, the first hinge is arranged at the mounting hole, and the top of the first hinge is pressed and fixed through the hinge cover plate.
Further, a first spherical cambered surface is arranged in the first matching groove, and a second spherical cambered surface matched with the first spherical cambered surface is arranged on the surface of the matching part; or the first matching groove is internally provided with a first plane, and the surface of the matching part is provided with a second plane matched with the first plane.
Further, the limiting structure comprises a first limiting plane arranged on the outer surface of the matching part and a second limiting plane arranged in the first matching groove and capable of being attached to the first limiting plane.
Further, a positioning block is arranged in the first matching groove, and the second limiting plane is arranged on the inner side of the positioning block and faces the center of the first matching groove.
Preferably, the cutting unit comprises a housing and a flexible support, the housing is provided with a mounting hole, the first hinge is arranged at the mounting hole, and the flexible support is wrapped outside the second hinge.
Further, the first hinge is pressed on the top edge of the flexible support, the top of the flexible support is arranged in the mounting hole, and the bottom of the flexible support is sleeved on the outer wall of the second hinge.
Further, the limiting structure comprises a limiting convex part arranged on the flexible support and a limiting concave part arranged on the first hinge and matched with the limiting convex part.
The invention also provides a personal care device which comprises a machine body and the tool bit floating structure arranged on the machine body.
The invention has the beneficial effects that:
According to the cutter head floating structure, the first hinge is connected with the cutting unit, so that the first hinge and the cutting unit form a whole; the second hinge is independently used as the other whole, the first hinge and the second hinge are in a matched state with the matched part through the first matched groove, and can also be regarded as the two whole bodies are in a matched state, when the limiting structure is not arranged, the two whole bodies can relatively rotate, so that when the whole personal care device is started and not shaved, the whole cutting unit is in a rotating state, and the situation causes the cutting unit to be unstable and inconvenient to shave; therefore, a limiting structure for limiting the mutual rotation of the first hinge and the second hinge is needed, but after the fixed limiting structure for keeping the relative position between the first hinge and the second hinge unchanged is arranged, the first hinge and the second hinge cannot rotate, so that the cutting unit has poor flexibility, rigid contact with skin and poor use experience when shaving. In the embodiment of the invention, the first hinge and the second hinge are arranged to be capable of being separated up and down, namely, the first matching groove and the matching part are separated in the axis direction of the first matching groove by pressing the first hinge, at the moment, the whole first hinge and the cutting unit can float and move in a gap between the first hinge and the second hinge under the action of the face fitting force, when the external force is reduced or disappears, the first matching groove and the matching part can be re-matched through manual operation, the elasticity of the first hinge or the elasticity of other structures, or the first matching groove and the matching part can be slowly restored to be matched through the interaction of contact surfaces between the first matching groove and the matching part, so that the first matching groove and the matching part are separated and matched continuously and alternately according to different shaving forces, and therefore, the first hinge and the second hinge can realize mutual rotation or relative static, and a good shaving experience can be obtained by a user. In addition, the cutter head floating structure omits a spring, so that the cutter head floating structure is simple in structure, simple in assembly and low in cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a personal care apparatus according to a first embodiment of the present invention;
FIG. 2 is a side view of a bit floating structure in a personal care device according to an embodiment of the present invention;
FIG. 3 is a longitudinal cross-sectional view of a bit floating structure in a personal care device according to a first embodiment of the present invention;
FIG. 4 is a schematic view of a first hinge in a floating structure of a shaving head of a personal care apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic view of a second hinge in a floating structure of a shaving head of a personal care apparatus according to an embodiment of the present invention;
FIG. 6 is an exploded view of a first hinge and a second hinge of a floating structure of a shaving head of a personal care apparatus according to an embodiment of the present invention;
FIG. 7 is a top view of a first hinge and a second hinge of a floating structure of a shaving head of a personal care apparatus according to an embodiment of the present invention;
FIG. 8 is a longitudinal cross-sectional view of a first hinge and a second hinge of a floating structure of a shaving head of a personal care apparatus according to a first embodiment of the present invention;
FIG. 9 is a schematic view of a hinge cover plate in a floating structure of a shaving head in a personal care apparatus according to an embodiment of the present invention;
FIG. 10 is an exploded view of a head floating structure of a personal care device according to an embodiment of the present invention before assembling a hinge cover plate and a housing;
FIG. 11 is a top view of an assembly of a hinge cover plate and a housing in a floating structure of a shaving head in a personal care apparatus according to an embodiment of the present invention;
FIG. 12 is an exploded view of a floating structure of a shaving head in a personal care apparatus according to a first embodiment of the present invention;
FIG. 13 is an enlarged view of FIG. 10 at A;
FIG. 14 is an exploded view of a floating structure of a tool bit according to a second embodiment of the present invention;
FIG. 15 is a longitudinal cross-sectional view of a floating structure for a tool bit according to a second embodiment of the present invention;
wherein, each reference sign in the figure:
100-fuselage; 200-a tool bit floating structure; 210-a flexible stent; 211-an annular collar; 220-limit structure; 400-a cutting unit; 410-a housing; 411-mounting holes; 412-a stop; 413—a positioning column; 414-a clamping groove; 415-limiting block; 420-cover plate; 430-a bracket; 440-tool bit assembly; 500-a first hinge; 510-a first mating groove; 511-a second limit plane; 512-positioning blocks; 514-an annular flange; 515-a first clearance groove; 516-semicircular locating holes; 517-a first spherical cambered surface; 518-a first plane; 600-second hinge; 610-mating portion; 611-a first limit plane; 612-a second plane; 620-a second mating groove; 621-a first central aperture; 630-a connection; 640-annular clamping groove; 700-hinge cover plate; 720-clamping blocks; 730-second clearance groove.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
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," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The cutter head floating structure provided by the embodiment of the invention is mainly applied to a personal care device, and the personal care device is taken as an example for the following detailed description. It should be noted that the bit floating structure may also be adapted for use with other personal care products, such as hair clippers, shavers, and the like.
The cutter head floating structure provided by the embodiment of the invention comprises a cutting unit, a first hinge, a second hinge and a limiting structure. The first hinge is connected with the cutting unit, a first matching groove is formed in the first hinge, and the bottom of the first matching groove penetrates through the first hinge; the top of the second hinge is provided with a matching part arranged in the first matching groove, the matching part and the first matching groove can be axially separated along the first matching groove under the action of external force, and the bottom of the second hinge penetrates through the first hinge to extend away from the cutting unit; and the limiting structure is used for limiting the first matching groove to rotate around the central axis of the first matching groove.
Based on the cutter head floating structure, the first hinge is fixedly connected with the cutting unit, and the first hinge and the cutting unit form an integral; the second hinge is independently used as the other whole, the first hinge and the second hinge are in a matched state with the matched part through the first matched groove, and can also be regarded as the two whole bodies are in a matched state, when the limiting structure is not arranged, the two whole bodies can relatively rotate, so that when the whole personal care device is started and not shaved, the whole cutting unit is in a rotating state, and the situation causes the cutting unit to be unstable and inconvenient to shave; therefore, a limiting structure for limiting the mutual rotation of the first hinge and the second hinge is needed, but after the fixed limiting structure for keeping the relative position between the first hinge and the second hinge unchanged is arranged, the first hinge and the second hinge cannot rotate, so that the cutting unit has poor flexibility, rigid contact with skin and poor use experience when shaving. In the embodiment of the invention, the first hinge and the second hinge are arranged to be capable of being separated up and down, namely, the first matching groove and the matching part are separated in the axis direction of the first matching groove by pressing the first hinge, at the moment, the whole first hinge and the cutting unit can float and move in a gap between the first hinge and the second hinge under the action of the face fitting force, when the external force is reduced or disappears, the first matching groove and the matching part can be re-matched through manual operation, the elasticity of the first hinge or the elasticity of other structures, or the first matching groove and the matching part can be slowly restored to be matched through the interaction of contact surfaces between the first matching groove and the matching part, so that the first matching groove and the matching part are separated and matched continuously and alternately according to different shaving forces, and therefore, the first hinge and the second hinge can realize mutual rotation or relative static, and a good shaving experience can be obtained by a user. In addition, the cutter head floating structure omits a spring, so that the cutter head floating structure is simple in structure, simple in assembly and low in cost.
In practical applications, the above-mentioned structure can be implemented by different embodiments, and the floating structure of the cutter head will be described in detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 3, a personal care apparatus according to a first embodiment of the present invention includes a main body 100 and a cutter head floating structure 200 provided on the main body 100. The tool bit floating structure 200 includes a cutting unit 400, a first hinge 500 fixedly connected with the cutting unit 400, a second hinge 600 matched with the first hinge 500, and a limiting structure 220. The top end of the second hinge 600 is coupled with the first hinge 500, and the bottom end of the second hinge 600 is fixedly coupled with the body 100. Specifically, the first hinge 500 has a first mating groove 510, the first mating groove 510 has a first spherical cambered surface 517, the spherical center of the first spherical cambered surface 517 is O, the first mating groove 510 has a central axis L, and the bottom of the first mating groove 510 penetrates through the first hinge 500, i.e. the first hinge 500 is hollow.
And the second hinge 600 has a mating portion 610 disposed in the first mating groove 510 at the top, where the mating portion 610 is spherical, and the outer wall surface of the mating portion 610 is matched with the cambered surface of the first spherical cambered surface 517, so that when the mating portion 610 is disposed in the first mating groove 510, the outer wall surface of the mating portion 610 can better fit with the first spherical cambered surface 517. In addition, the engaging portion 610 and the first engaging groove 510 may be separated along the central axis L under the external force, and the limiting structure 220 may prevent the first hinge 500 and the second hinge 600 from rotating with each other. The second fitting groove 620 is disposed in the fitting portion 610, and a first central hole 621 penetrating to the bottom of the second hinge 600 is disposed at the bottom of the second fitting groove 620, and the bottom of the second hinge 600 extends into and is fixed to the body 100 through the first hinge 500, so that the second hinge 600 is fixedly connected with the body 100.
Further, in the present embodiment, the cutting unit 400 includes a housing 410 and a hinge cover 700. The casing 410 is integrally in a three-petal shape, the center of the casing is provided with a mounting hole 411, the first hinge 500 is arranged at the mounting hole 411, the top of the first hinge 500 is pressed and fixed through the hinge cover plate 700, and the second hinge 600 matched with the first hinge 500 extends out of the mounting hole 411 and is connected with the machine body 100. In the present embodiment, the first hinge 500 is fixed at the mounting hole 411 by the hinge cover 700. In other embodiments, the hinge cover plate 700 may be omitted, and the first hinge 500 may be fixed to the mounting hole 411 by its own structural design or other parts.
In the non-operating state, the first hinge 500 and the second hinge 600 are attached with spherical cambered surfaces.
Preferably, in the present embodiment, the first hinge 500 is a plastic part capable of elastic deformation, when the top of the first hinge 500 is pressed by an external force, the first hinge 500 is elastically deformed, and when the external force disappears, the first hinge 500 returns to its original state.
When the personal care apparatus works, the cutting unit 400 contacts the face and is pressed by the facial force, the cutting unit 400 drives the hinge cover plate 700 to move downwards, meanwhile, pressure is applied to the top end of the first hinge 500 to enable the first hinge 500 to elastically deform, in the process, the limiting structure 220 is separated to enable the hinge cover plate 700 and the cutting unit 400 to rotate along with the first hinge 500 around the spherical center O of the first spherical cambered surface 517, so that the cutting unit 400 floats within a 360-degree range, and in the rotating process, the top end of the cutting unit 400 can float up and down due to the elastic deformation of the first hinge 500, so that the cutting unit 400 floats within the 360-degree range more smoothly; when the external force applied to the cutting unit 400 is reduced, that is, the external force is smaller than the elastic force of the first hinge 500, the first hinge 500 elastically returns to push the hinge cover 700 upwards, the hinge cover 700 and the cutting unit 400 move upwards, and the limiting structure 220 is matched again to prevent the first hinge 500 and the second hinge 600 from rotating relatively, in this process, the cutting unit 400 floats up and down along the central axis L, so that the facial curve change can be more adapted to the facial curve change, and the hard contact with the face can be avoided, thereby bringing more comfortable shaving experience to the user.
Further, in order to facilitate that the first hinge 500 and the second hinge 600 cannot rotate with each other, and simultaneously facilitate that the first hinge 500 and the second hinge 600 are separated, the limiting structure 220 does not block the rotation of the first hinge 500, in this embodiment, the limiting structure 220 is disposed between the first hinge 500 and the second hinge 600, and the design of the limiting structure 220 is simple and smart, so that the rotation in the circumferential direction is prevented, and the separation in the axial direction is not affected.
Specifically, referring to fig. 4 to 8, the limiting structure 220 includes a first limiting plane 611 disposed on an outer wall surface of the mating portion 610, and a second limiting plane 511 disposed in the first mating groove 510 and capable of being attached to the first limiting plane 611. Because the outer wall surfaces of the first spherical cambered surface 517 and the mating portion 610 are spherical cambered surfaces, when the first spherical cambered surface 517 and the mating portion 610 are directly mated, friction-free and resistance-free rotation can be realized, and the first limiting plane 611 and the second limiting plane 511 are in plane lamination, when the first hinge 500 and the mating portion 610 are mutually rotated, the first limiting plane 611 and the second limiting plane 511 cannot rotate under the action of friction force between the two planes, so that the limiting is realized in the circumferential direction. At the same time, the two planes are engaged in the axial direction and do not interfere with the upward or downward movement of the first hinge 500.
Specifically, the first limit plane 611 may be regarded as a plane formed by cutting longitudinally along the outer wall surface of the mating portion 610. Since the first spherical cambered surface 517 is a cambered surface, in order to facilitate the setting of the second limiting plane 511, the positioning block 512 is disposed in the first matching groove 510, and the second limiting plane 511 is disposed inside the positioning block 512 and faces the center of the first matching groove 510. In this embodiment, the positioning block 512 has a cubic block structure, and the second limiting plane 511 is a surface of the cube that is located inside.
In this embodiment, three first limiting planes 611 are provided, and the three first limiting planes 611 are uniformly distributed on the outer wall surface of the matching portion 610; the number of the second limiting planes 511 is three, and the three second limiting planes 511 are uniformly arranged in the first matching groove 510. By the three-group planar fitting, the first hinge 500 and the second hinge 600 can be well limited. Moreover, since the top surfaces of the cube-shaped positioning blocks 512 are also planar, a triangular arrangement is formed between the three positioning blocks 512, and the top surfaces of the three positioning blocks 512 form a stable supporting surface for more reliably supporting the hinge cover plate 700. Of course, the number of the first limit plane 611 and the second limit plane 511 may be one, two, four, or more.
In this embodiment, the top of the second hinge 600 is a mating portion 610, and the bottom has a connecting portion 630, and the connecting portion 630 is a cylindrical structure. The diameter of the cylinder is slightly larger than the diameter of the bottom of the mating portion 610. Because the inner wall surface of the second spherical cambered surface in the ball head is gradually increased from bottom to top, the diameter of the cylinder is designed to be slightly larger than the bottom diameter of the matching part 610, so that on one hand, the compactness of the parts of the second hinge 600 is maintained, and on the other hand, the connection part 630 is convenient and stable in connection with the cutting unit 400 and the machine body 100.
Referring to fig. 10 to 12, the cutting unit 400 further includes a cover 420 disposed on the housing 410, a bracket 430 disposed on the cover 420, at least one cutter head assembly 440 (three cutter head assemblies 440 in the present embodiment) disposed on the bracket 430, and a transmission structure (not shown) disposed in a space enclosed by the housing 410 and the cover 420 for driving the cutter head assembly 440.
Referring to fig. 4 again, the edge of the first mating groove 510 of the first hinge 500 extends outwards to form an annular flange 514, when the hinge is installed, the annular flange 514 is overlapped on the edge of the mounting hole 411, at least one stop block 412 is disposed on the edge of the mounting hole 411, a first avoidance groove 515 is disposed on the annular flange 514 corresponding to the stop block 412, the hinge cover 700 covers the first mating groove 510, and at least one clamping block 720 capable of being clamped at the stop block 412 protrudes outwards from the edge of the hinge cover 700. In this way, the hinge cover 700 is fixed on the housing 410 by the clamping of the clamping block 720 and the stop block 412, and meanwhile, the hinge cover 700 is covered on the first hinge 500, so that the first hinge 500 is limited between the housing 410 and the hinge cover 700, and the first hinge 500, the housing 410 and the hinge cover 700 are connected into a whole. When the cutting unit 400 shaves and presses the skin, the housing 410 and the hinge cover 700 are pushed down, at this time, the first hinge 500 is pushed down by the hinge cover 700 to move down, so that the first limiting plane 611 and the second limiting plane 511 are separated in the axial direction, and when the external pressing force disappears, the elasticity of the first hinge 500 returns to the original position, and the first limiting plane 611 and the second limiting plane 511 are attached again.
When the first hinge 500 is installed, at least one positioning column 413 is further arranged at the edge of the installation hole 411 for quick positioning, and a semicircular positioning hole 516 for the at least one positioning column 413 to be clamped in when the annular flange 514 rotates is arranged on the annular flange 514. The positioning column 413 and the semicircular positioning hole 516 not only play a role in positioning, but also play a role in supporting and positioning the transmission structure in the housing 410.
Further, referring to fig. 13, the position of the stopper 412 is higher than the edge of the mounting hole 411, so that a slot 414 into which the clamping block 720 can be clamped when rotating horizontally is formed between the stopper 412 and the edge of the mounting hole 411, a limiting block 415 is arranged on one side of the slot 414, when the clamping block 720 rotates in the slot 414 by a certain angle, the limiting block 415 is stopped, and the hinge cover 700 is mounted in place, meanwhile, a second avoidance slot 730 avoiding the stopper 412 is further arranged at the edge of the hinge cover 700, and the clamping block 720 is arranged at the second avoidance slot 730. In this way, when the hinge cover 700 is installed, the hinge cover 700 is first covered on the first hinge 500, specifically, the hinge cover 700 is placed on the top surfaces of the three positioning blocks 512, the second avoidance groove 730 corresponds to the clamping block 720, and then the hinge cover 700 is rotated, so that the clamping block 720 rotates into the clamping groove 414 until the clamping block is abutted against the limiting block 415, and the installation of the hinge cover 700 is completed. At this time, the clamping groove 414 limits the clamping block 720 in the direction of the central axis L, and the limiting block 415 and the second avoidance groove 730 limit the rotation angle of the clamping block 720 in the circumferential direction.
Preferably, in this embodiment, three stoppers 412 are provided, and three stoppers 412 are uniformly distributed on the edge of the mounting hole 411, and three positioning columns 413 are also provided, and the three positioning columns 413 and the three stoppers 412 are alternately spaced and uniformly distributed on the edge of the mounting hole 411. That is, a stop 412 is disposed between the two positioning posts 413, and a positioning post 413 is disposed between the two stops 412. The alternate spacing arrangement of this arrangement allows for a more stable and reliable attachment of the first hinge 500.
In this embodiment, the hinge cover 700 is detachably fixed by screwing and clamping, and in other embodiments, the hinge cover 700 may be fixed by screw fixing, adhesive bonding, ultrasonic welding, or the like.
Embodiment two:
Referring to fig. 3, a tool bit floating structure 200 according to a second embodiment of the present invention is substantially the same as the tool bit floating structure 200 according to the first embodiment, except that referring to fig. 3 and 12 again, in the present embodiment, the tool bit floating structure 200 includes a housing 410 and a flexible support 210. The case 410 has a mounting hole 411, the first hinge 500 is disposed at the mounting hole 411, and the flexible bracket 210 is wrapped outside the second hinge 600. Specifically, the first hinge 500 is pressed on the top edge of the flexible support 210, the top of the flexible support 210 is placed in the mounting hole 411, and the bottom of the flexible support 210 is sleeved on the outer wall of the second hinge 600. That is, the flexible bracket 210 has a hollow cylindrical structure, and the second hinge 600 is located in the hollow structure of the flexible bracket 210. Specifically, the top of the flexible support 210 also extends outwards to form an annular convex edge 211, the annular convex edge 211 is disposed at the edge of the mounting hole 411, the annular flange 514 of the first hinge 500 is pressed on the annular convex edge 211, the outer wall of the second hinge 600 is provided with an annular clamping groove 640, and the bottom of the flexible support 210 is sleeved on the annular clamping groove 640 of the second hinge 600, so that the top and the bottom of the flexible support 210 are fixed.
In addition, in this embodiment, the limiting structure 220 is different from that of the first embodiment. Specifically, in the present embodiment, the limiting structure 220 includes a limiting protrusion (not shown in the drawings) provided on the flexible bracket 210 and a limiting recess (not shown in the drawings) provided on the first hinge 500 and engaged with the limiting protrusion. Because the flexible support 210 is fixed at the mounting hole 411 and cannot rotate, the first hinge 500 and the flexible support 210 are fixed together through the limit convex portion and the limit concave portion, so that the first hinge 500 cannot rotate, that is, the first hinge 500 and the second hinge 600 cannot rotate relatively, the whole cutting unit 400 is prevented from rotating and slipping, but at the same time, the flexible support 210 can move up and down in the axial direction to realize floating by utilizing the elastic expansion and contraction performance of the flexible support 210. Of course, the limiting structure 210 is not limited to the above-mentioned limiting convex portion and limiting concave portion, and may be other fasteners, such as screws, for connecting the first hinge 500 and the flexible bracket 210.
When the personal care device works, the cutting unit 400 contacts the face and is extruded by the action force of the face, the cutting unit 400 drives the first hinge 500 to move downwards, meanwhile, pressure is applied to the top end of the flexible support 210 to enable the flexible support 210 to elastically deform, in the process, the limiting structure 220 is separated to enable the hinge cover plate 700 and the cutting unit 400 to rotate along with the first hinge 500 around the spherical center O of the first spherical cambered surface 517, so that the cutting unit 400 floats within a 360-degree range, and in the rotating process, the top end of the cutting unit 400 can float up and down due to the elastic deformation of the flexible support 210, so that the 360-degree range of the cutting unit 400 floats more smoothly; when the external force applied to the cutting unit 400 is reduced, that is, the external force is smaller than the elastic force of the flexible support 210, the flexible support 210 elastically returns to push the first hinge 500 upwards, the cutting unit 400 moves upwards, the limiting structure 220 is matched again to prevent the first hinge 500 and the second hinge 600 from rotating relatively, and in the process, the cutting unit 400 floats up and down along the central axis L, so that the face curve change can be adapted to better avoid hard contact with the face, and more comfortable shaving experience is brought to the user.
In addition, the flexible bracket 210 is provided therein to shield the exposed portion between the housing 410 and the second hinge 600, thereby improving the external appearance of the personal care apparatus, protecting the internal components, and supporting the cutting unit 400 to some extent.
Example III
Referring to fig. 14 and 15, a floating structure 200 for a tool bit according to a second embodiment of the present invention is substantially the same as the floating structure 200 for a tool bit according to the first embodiment, except that the first engaging groove 510 is different from the engaging portion 610 in shape. Specifically, in the present embodiment, the first mating groove 510 has a first plane 518 therein, which extends horizontally inward along the bottom edge of the first mating groove 510, and the surface of the mating portion 610 has a second plane 612 that mates with the first plane 518. The second plane 612 is the bottom plane of the mating portion 610. When the engaging portion 610 of the second hinge 600 extends into the first engaging groove 510 of the first hinge 500, the second plane 612 of the engaging portion 610 is overlapped with the first plane 518 in the first engaging groove 510, and when the limiting structure 220 is separated, the second plane 612 and the first plane 518 can rotate relative to each other, so that the relative rotation between the first hinge 500 and the second hinge 600 can be achieved, and the requirement that the cutting unit 400 floats within 360 ° in the first embodiment can be achieved.
Other structures not listed in this embodiment may be the same as those in the first embodiment, or may be the same as those in the first embodiment, and will not be described here again.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (9)
1. A tool bit floating structure which characterized in that: comprising the following steps:
the cutting unit comprises a shell, a cover plate arranged on the shell, a bracket arranged on the cover plate and at least one cutter head assembly arranged on the bracket;
The first hinge is connected with the cutting unit, a first matching groove is formed in the first hinge, and the bottom of the first matching groove penetrates through the first hinge;
the top of the second hinge is provided with a matching part arranged in the first matching groove, the matching part and the first matching groove can be axially separated under the action of external force, and the bottom of the second hinge penetrates through the first hinge and extends in a direction away from the cutting unit;
the limiting structure is used for preventing the first hinge and the second hinge from rotating mutually;
The first hinge is a plastic part capable of being elastically deformed.
2. The bit floating structure of claim 1, wherein: the cutting unit comprises a hinge cover plate, the shell is provided with a mounting hole, the first hinge is arranged at the mounting hole, and the top of the first hinge is pressed and fixed through the hinge cover plate.
3. The bit floating structure according to claim 2, wherein: the first matching groove is internally provided with a first spherical cambered surface, and the surface of the matching part is provided with a second spherical cambered surface matched with the first spherical cambered surface; or the first matching groove is internally provided with a first plane, and the surface of the matching part is provided with a second plane matched with the first plane.
4. A tool bit floating structure according to claim 3, wherein: the limiting structure comprises a first limiting plane arranged on the outer surface of the matching part and a second limiting plane arranged in the first matching groove and capable of being attached to the first limiting plane.
5. The bit floating structure of claim 4, wherein: the first matching groove is internally provided with a positioning block, and the second limiting plane is arranged on the inner side of the positioning block and faces the center of the first matching groove.
6. The bit floating structure of claim 1, wherein: the cutting unit comprises a flexible support, the shell is provided with a mounting hole, the first hinge is arranged at the mounting hole, and the flexible support is wrapped outside the second hinge.
7. The bit floating structure of claim 6, wherein: the first hinge is pressed on the top edge of the flexible support, the top of the flexible support is arranged in the mounting hole, and the bottom of the flexible support is sleeved on the outer wall of the second hinge.
8. The bit floating structure of claim 7, wherein: the limiting structure comprises a limiting convex part arranged on the flexible support and a limiting concave part arranged on the first hinge and matched with the limiting convex part.
9. A personal care apparatus comprising a body, characterized in that: the personal care apparatus further comprising the bit floating structure according to any one of claims 1 to 8 provided on the body.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171792.1A CN109968412B (en) | 2019-03-07 | 2019-03-07 | Cutter head floating structure and personal care device |
| PCT/CN2019/085016 WO2020177208A1 (en) | 2019-03-07 | 2019-04-29 | Blade floating structure and personal care device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910171792.1A CN109968412B (en) | 2019-03-07 | 2019-03-07 | Cutter head floating structure and personal care device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109968412A CN109968412A (en) | 2019-07-05 |
| CN109968412B true CN109968412B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910171792.1A Active CN109968412B (en) | 2019-03-07 | 2019-03-07 | Cutter head floating structure and personal care device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109968412B (en) |
| WO (1) | WO2020177208A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN109968412A (en) | 2019-07-05 |
| WO2020177208A1 (en) | 2020-09-10 |
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