CN116968090A - Movable cutter assembly, cutter head module and electric shaver - Google Patents

Abstract

The application discloses a movable cutter assembly, a cutter head module and an electric shaver, wherein the movable cutter assembly comprises a movable cutter and a movable cutter holder; the movable cutter is provided with a trimming edge extending along a first direction, the trimming edge is provided with a plurality of movable teeth which are sequentially arranged along the first direction, the movable cutter is provided with a yielding hole in a penetrating way along a second direction, the yielding hole is arranged at intervals with the trimming edge in a third direction, and the first direction, the second direction and the third direction are mutually perpendicular; the movable cutter seat is arranged on the movable cutter and is kept relatively fixed with the movable cutter in the first direction, the movable cutter seat comprises a guide part and a transmission part, the guide part is made of plastic, the guide part is positioned on one side of the movable cutter in the second direction and is matched with a guide structure of the electric shaver, and the transmission part penetrates through the abdicating hole and extends to the other side of the movable cutter in the second direction and is matched with a driving structure of the electric shaver. The arrangement is beneficial to reducing the noise of the electric shaver during operation.

Description

Movable cutter assembly, cutter head module and electric shaver

Technical Field

The application relates to the technical field of electric shaver equipment, in particular to a movable shaver assembly, a shaver head module and an electric shaver.

Background

The electric shaver becomes common washing and caring tools in families increasingly, the existing electric shaver tool bit module is generally composed of a mounting seat, an elastic piece, a movable cutter seat, a static rail and a static cutter, wherein the static cutter, the static rail, the movable cutter, the elastic piece and the mounting seat are sequentially arranged from top to bottom, the movable cutter is in sliding connection with the static rail, the movable cutter seat is arranged between the mounting seat and the movable cutter, and the movable cutter seat passes through the mounting seat to be in transmission connection with a driving structure of the electric shaver.

The movable blade, the movable blade holder, the static rail and the static blade in the existing electric shaver blade head module are made of stainless steel materials, so that the movable blade and the static rail, the movable blade holder and the movable blade holder and the driving structure are in rigid contact, and after the movable blade is driven by the driving structure, relatively large noise can be generated due to mutual friction between the movable blade and the static rail, between the movable blade holder and the movable blade and between the movable blade holder and the driving structure, so that improvement is needed.

Disclosure of Invention

The application mainly aims to provide a movable cutter assembly which aims to reduce noise generated when an electric shaver works.

In order to achieve the above object, the present application provides a movable knife assembly, which includes a movable knife and a movable knife holder; wherein,,

the movable cutter is provided with a trimming edge extending along a first direction, the trimming edge is provided with a plurality of movable teeth which are sequentially arranged along the first direction, the movable cutter is provided with a yielding hole in a penetrating manner along a second direction, the yielding hole is arranged at intervals with the trimming edge in a third direction, and the first direction, the second direction and the third direction are mutually perpendicular to each other;

the movable cutter holder is arranged on the movable cutter and is relatively fixed with the movable cutter in the first direction, the movable cutter holder comprises a guide part and a transmission part, the guide part is made of plastic, the guide part is positioned on one side of the movable cutter in the second direction and is matched with a guide structure of the electric shaver, and the transmission part penetrates through the abdicating hole and extends to the other side of the movable cutter in the second direction and is matched with a driving structure of the electric shaver.

In some embodiments of the present application, an assembling boss is convexly disposed on a surface of the guide portion facing the relief hole, the assembling boss is in plug-in fit with the relief hole, two side walls of the assembling boss in the first direction are respectively abutted against two hole walls of the relief hole in the first direction, the transmission portion is connected with the surface of the assembling boss facing away from the guide portion, and the transmission portion is in clearance fit with the relief hole.

In some embodiments of the present application, the relief hole is disposed in a middle portion of the movable blade in the first direction, the relief hole is disposed to extend along the first direction, the assembling boss is disposed in a middle portion of the guide portion in the first direction, and the assembling boss is further disposed along the first direction.

In some embodiments of the present application, the moving blade is stamped from a side adjacent to the guide portion to a side opposite to the guide portion, so as to form an assembly groove extending along the first direction, the relief hole is formed at a bottom of the assembly groove, and the guide portion is assembled in the assembly groove.

In some embodiments of the present application, the moving blade is provided with at least two positioning holes along the second direction, and the at least two positioning holes are further provided on two sides of the yielding hole in the first direction; the guide part is provided with at least two locating columns towards the surface of the movable knife correspondingly, the at least two locating columns are in one-to-one corresponding plug-in connection with the at least two locating holes, and one end of the at least two locating columns penetrating through the corresponding locating holes is fixedly connected with the movable knife through hot melt welding.

In some embodiments of the present application, each positioning hole includes a first mating section and a second mating section that are sequentially communicated, the first mating section of each positioning hole is disposed adjacent to the guiding portion, the second mating section of each positioning hole is located at a side of the first mating section away from the guiding portion, an inner diameter of the first mating section of each positioning hole is smaller than an inner diameter of the second mating section, the first mating section of each positioning hole is in plug-in mating with a corresponding positioning post, the second mating section of each positioning hole is in clearance mating with a corresponding positioning post, and a portion of each positioning post located in the corresponding second mating section is in hot-melt welding.

In some embodiments of the present application, a guide groove is disposed on a side of the guide portion facing away from the moving blade, the guide groove extends along the first direction, groove walls of the guide groove in the first direction are all disposed through the guide groove, and the guide groove is used for matching with a guide structure of the electric shaver.

In some embodiments of the present application, the guide groove has two guide walls disposed opposite to each other in the third direction, at least two abutment protrusions are convexly disposed on each of the guide walls, and a surface of each abutment protrusion on each of the guide walls facing the other guide wall is a convex arc surface.

In some embodiments of the present application, each of the abutment projections is provided to extend from a bottom of the guide groove toward a notch of the guide groove in the second direction, and an end of each of the abutment projections adjacent to the notch of the guide groove is provided with a guide slope.

In some embodiments of the present application, the moving blade is further provided with two avoidance openings in a penetrating manner, the two avoidance openings are located at two sides of the abdication hole in the first direction, and the two avoidance openings further extend in a direction away from the abdication hole in the first direction and are provided in a penetrating manner.

In some embodiments of the present application, the moving blade is punched from a side adjacent to the guide portion to a side opposite to the guide portion to form an assembly groove extending along the first direction, and the abdication hole and the two abdication openings are both arranged at a bottom of the assembly groove;

the guide part is assembled in the assembly groove, one side of the guide part, which is opposite to the movable cutter, is provided with a guide groove, the guide groove extends along the first direction, the groove walls of the guide groove in the first direction are all penetrated, and the guide groove is used for being matched with a guide structure of the electric shaver.

In some embodiments of the present application, each of the movable teeth protrudes in the second direction and is disposed adjacent to a surface of the guide portion in the second direction, a middle portion of each of the movable teeth is concavely disposed to form a relief recess, one side of each of the relief recesses adjacent to the guide portion is disposed therethrough, and a bottom of each of the relief recesses is disposed flush with a surface of the movable blade adjacent to the guide portion in the second direction.

The application also provides a tool bit module, which comprises a mounting seat, an elastic piece, a static tool, a static rail and a movable tool assembly; wherein,,

the static knife is arranged on one side of the mounting seat in the second direction, the movable knife is arranged between the static knife and the mounting seat, and the elastic piece is arranged between the movable knife and the mounting seat so as to elastically support the movable knife;

the static rail is arranged between the movable cutter and the static cutter, the guide part is in sliding connection with the static rail, the mounting seat is provided with a through hole in a penetrating manner along the second direction, and the transmission part penetrates through the through hole to be matched with a driving structure of the electric shaver.

In some embodiments of the present application, a mounting groove is concavely formed on one side of the mounting seat adjacent to the static knife, and the through hole is formed at the bottom of the mounting groove; the elastic piece is a biasing elastic piece, the biasing elastic piece comprises a body and elastic supporting arms which are oppositely arranged in the third direction, the body is arranged at the bottom of the mounting groove and is arranged with the movable cutter at intervals, the body is provided with a dodging hole communicated with the through hole in a penetrating mode, the dodging hole is used for the transmission part to pass through, the two elastic supporting arms extend from the bottom of the mounting groove to the notch of the mounting groove in the second direction, and the two elastic supporting arms are far away from the side ends of the body and are respectively in elastic butt connection with the two sides of the movable cutter in the third direction.

The application also provides an electric shaver, which comprises a movable shaver component, wherein the shaver head module comprises a mounting seat, an elastic piece, a static shaver, a static rail and a movable shaver component; wherein,,

the static knife is arranged on one side of the mounting seat in the second direction, the movable knife is arranged between the static knife and the mounting seat, and the elastic piece is arranged between the movable knife and the mounting seat so as to elastically support the movable knife;

the static rail is arranged between the movable cutter and the static cutter, the guide part is in sliding connection with the static rail, the mounting seat is provided with a through hole in a penetrating manner along the second direction, and the transmission part penetrates through the through hole to be matched with a driving structure of the electric shaver.

According to the electric shaver provided by the application, the moving knife is provided with the abdication hole penetrating along the second direction, the guide part and the transmission part of the moving knife holder are made of plastics, the guide part of the moving knife holder is matched with the guide structure of the electric shaver, the transmission part of the moving knife holder is matched with the driving structure of the electric shaver, and the noise generated by mutual friction of the plastics and the metal piece is far smaller than that generated by mutual friction of the metal piece and the metal piece because the guide part and the transmission part are made of plastics, so that the noise generated by the electric shaver assembled with the moving knife assembly is smaller when in work.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, 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 view of a moving blade assembly according to an embodiment of the present application;

FIG. 2 is a schematic view of the moving blade of FIG. 1;

FIG. 3 is a schematic view of the movable tool holder of FIG. 1;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

FIG. 6 is a schematic view of the movable blade holder of FIG. 1 from another view;

FIG. 7 is a cross-sectional view of a bit module of the present application;

FIG. 8 is an exploded view of the bit module of FIG. 7;

FIG. 9 is a schematic view of the mounting base of FIG. 8;

fig. 10 is a schematic structural diagram of the biasing spring in fig. 8.

Reference numerals	Name of the name	Reference numerals	Name of the name
				100	Movable knife assembly	2141	Guiding inclined plane
10	Movable knife	22	Transmission part
				11	Trimming edge	1000	Tool bit module
12	Movable teeth	200	Mounting base
				12a	Avoidance recess	210	Mounting groove
10a	Yielding hole	220	Assembly column
				10b	Assembly groove	200a	Through hole
10c	Positioning hole	300	Static knife
				11c	First mating section	310	Static tooth
12c	Second mating section	400	Static rail
				10d	Avoidance opening	410	Guide beam
20	Movable knife holder	420	Positioning foot
				21	Guide part	500	Biasing spring
211	Assembly boss	510	Body
				212	Positioning column	511	Avoidance hole
20a	Guide groove	512	Assembly hole
				213	Guide wall	520	Elastic supporting arm
214	Abutment projection

Reference numerals illustrate:

the achievement of the objects, functional features and advantages of the present application will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1 to 3, the present application provides a movable cutter assembly 100, wherein the movable cutter assembly 100 includes a movable cutter 10 and a movable cutter holder 20; the movable cutter 10 is provided with a trimming edge 11 extending along a first direction, the trimming edge 11 is provided with a plurality of movable teeth 12 which are sequentially arranged along the first direction, the movable cutter 10 is provided with a yielding hole 10a in a penetrating manner along a second direction, the yielding hole 10a is arranged at intervals with the trimming edge 11 in a third direction, and the first direction, the second direction and the third direction are mutually perpendicular;

the movable blade holder 20 is mounted on the movable blade 10 and is relatively fixed to the movable blade 10 in a first direction, the movable blade holder 20 includes a guide portion 21 made of plastic and a transmission portion 22, the guide portion 21 is located at one side of the movable blade 10 in a second direction to be engaged with a guide structure of the electric shaver, and the transmission portion 22 extends to the other side of the movable blade 10 in the second direction through the relief hole 10a to be engaged with a driving structure of the electric shaver.

The outer contour of the movable blade 10 is generally rectangular, but the outer contour of the movable blade 10 may be configured in a waist shape, and the outer contour of the movable blade 10 may be configured in other shapes, which are not illustrated herein. The movable knife 10 is usually made of stainless steel, such as 3Cr13, 4Cr13 and 6Cr13 stainless steel, and the stainless steel has better strength and ductility, so that the stainless steel material can be pressed into a sheet shape through a stamping process, and meanwhile, the movable teeth 12 on the movable knife 10 can be stamped and formed at one time.

The trimming edge 11 on the movable blade 10 is one side edge of the movable blade 10 along the first direction, when the external contour of the movable blade 10 is rectangular, the trimming edge 11 may be one side edge extending along the length direction of the movable blade 10, and when the external contour of the movable blade 10 is square, the trimming edge 11 may be formed along any one side edge of the movable blade 10; the number of the trimming edges 11 on the movable blade 10 may be one or two, and when the number of the trimming edges 11 on the movable blade 10 is two, the two trimming edges 11 on the movable blade 10 are arranged at intervals in the third direction.

The relief hole 10a on the movable cutter 10 may be formed in the middle of the movable cutter 10, the relief hole 10a may also be formed in a position of the movable cutter 10 deviating from the middle, and the relief hole 10a may also be formed in other positions of the movable cutter 10, so long as it is ensured that the relief hole 10a is spaced from the trimming edge 11 in the third direction. The shape of the relief hole 10a may be various, and the relief hole 10a may be a regular shape, such as a circular hole, a square hole, a waist-shaped hole, etc., and the relief hole 10a may be an irregular shape, and the shape of the relief hole 10a is not limited herein.

There are various ways in which the movable blade holder 20 and the movable blade 10 are relatively fixed in the first direction, for example, the movable blade holder 20 and the movable blade 10 are connected by a screw connection, a rivet riveting connection, or other ways, for example, the movable blade holder 20 and the movable blade 10 are positioned by a positioning structure of a plugging fit, and other ways of positioning between the movable blade holder 20 and the movable blade 10 are also possible, which is not described herein.

Since the movable cutter holder 20 includes two parts, i.e., the guide part 21 and the transmission part 22 are fixedly connected, so that the movable cutter holder 20 and the movable cutter 10 remain relatively fixed in the first direction, and the movable cutter holder can be realized by matching the transmission part 22 with the movable cutter 10, or can be realized by matching the guide part 21 with the movable cutter 10, or can be realized by matching the transmission part 22 and the guide part 21 with the movable cutter 10, which is not limited herein.

Referring to fig. 7, when the electric shaver assembled with the above-mentioned movable shaver assembly 100 is assembled, the movable shaver 10 is disposed between the mounting base 200 and the stationary shaver 300 of the electric shaver, the elastic member of the electric shaver is disposed between the mounting base 200 and the movable shaver 10 and elastically supports the movable shaver 10, so that the movable shaver 10 is always abutted against the stationary shaver 300, a guiding structure is disposed between the stationary shaver 300 and the movable shaver 10, the guiding structure is usually a guide rail made of stainless steel, the guiding portion 21 of the movable shaver 20 is disposed between the movable shaver 10 and the stationary shaver 300 and slidably connected with the guide rail, and the transmission portion 22 of the movable shaver 20 is engaged with the driving structure (i.e., the linear motor) of the electric shaver through the yielding hole 10a of the movable shaver 10, i.e., the transmission portion 22 of the movable shaver 20 is engaged with the output shaft of the linear motor of the driving structure.

According to the application, the abdication hole 10a penetrating along the second direction is formed in the movable cutter 10, the guide part 21 and the transmission part 22 of the movable cutter holder 20 are made of plastic, the guide part 21 of the movable cutter holder 20 is matched with the guide structure of the electric shaver, the transmission part 22 of the movable cutter holder 20 is matched with the driving structure of the electric shaver, and as the guide part 21 and the transmission part 22 are made of plastic, the noise generated by the mutual friction between the plastic and the metal piece is far smaller than the noise generated by the mutual friction between the metal piece and the metal piece, so that the noise generated when the electric shaver assembled with the movable cutter assembly 100 works is smaller.

In addition, the movable cutter 10 is matched with the driving structure and the guiding structure of the electric shaver through the movable cutter holder 20, so that the structure of the movable cutter 10 can be simplified, and therefore, the abdication hole 10a and the plurality of movable teeth 12 on the movable cutter 10 can be punched and molded only through one punching process when the movable cutter 10 is produced, and further, the production and the manufacture of the movable cutter 10 are facilitated. In addition, the movable blade holder 20 is made of plastic, and the cost of the plastic is lower than that of metal, so that the production cost of the movable blade assembly 100 can be reduced.

Referring to fig. 2 and 3, in some embodiments of the present application, the guide portion 21 of the movable blade holder 20 is mated with the movable blade 10 so that the movable blade holder 20 is relatively fixed to the movable blade 10 in the first direction, specifically, a surface of the guide portion 21 facing the relief hole 10a is convexly provided with an assembling boss 211, the assembling boss 211 is in plug-in mating with the relief hole 10a, two side walls of the assembling boss 211 in the first direction respectively abut against two hole walls of the relief hole 10a in the first direction, and of course, two side walls of the assembling boss 211 in the third direction may also be mated with two hole walls of the relief hole 10a in the third direction, the transmission portion 22 is connected to a surface of the assembling boss 211 facing away from the guide portion 21, and the transmission portion 22 is also in clearance mating with the relief hole 10 a.

The arrangement is convenient for positioning and mounting the movable cutter holder 20 and the movable cutter 10, and the movable cutter holder 20 and the movable cutter 10 are kept relatively fixed in the first direction, so that the movable cutter 10 can move along with the movable cutter holder 20. In addition, since the transmission part 22 has a certain length in the second direction, the transmission part 22 is in clearance fit with the yielding hole 10a, and the problem that when the transmission part 22 is driven by the driving structure of the electric shaver to drive the movable cutter 10 to move, the shearing stress at the connection position of the transmission part 22 and the guide part 21 is overlarge, so that the connection position of the transmission part 22 and the guide part 21 is easy to break is avoided.

Further, referring to fig. 2 and 3, in some embodiments of the present application, the relief hole 10a is centrally disposed, and the relief hole 10a is further disposed along the first direction, that is, the relief hole 10a is located at an intermediate position of the movable blade 10 in the first direction, and the relief hole 10a is also located at an intermediate position of the movable blade 10 in the third direction; the assembling bosses 211 are correspondingly arranged along the first direction, and two side walls of the assembling bosses 211 in the first direction are respectively in abutting fit with two hole walls of the yielding hole 10a in the first direction.

By the arrangement, on one hand, when the movable cutter 10 moves along with the cutter holder 20, the stress of the movable cutter 10 in the first direction and the stress of the movable cutter 10 in the third direction are balanced, so that the movable cutter 10 can move stably and smoothly; on the other hand, the relief hole 10a and the fitting boss 211 have a certain length in the first direction, so that the problem that the fitting boss 211 is too short in length in the first direction, which results in weak strength and broken is avoided.

Further, the height of the assembling boss 211 in the second direction is smaller than or equal to the depth of the relief hole 10a in the second direction, but considering that the height of the assembling boss 211 is not too small, the height of the assembling boss 211 in the second direction is smaller than or equal to the depth of the relief hole 10a in the second direction and is larger than or equal to the depth of the relief hole 10a in the second direction, so that the assembling boss 211 is accommodated in the relief hole 10a when the assembling boss 211 is in plug-in fit with the relief hole 10a, thereby avoiding the problem that the normal movement of the movable blade 10 is affected by the extending of the assembling boss 211 out of the relief hole 10a, and ensuring that slippage is not easy to occur between the assembling boss 211 and the movable blade 10.

Referring to fig. 1 to 3, in some embodiments of the present application, the movable blade 10 is punched from a side adjacent to the guide portion 21 and opposite to the guide portion 21 to form an assembly slot 10b extending along the first direction, and the relief hole 10a is formed at the bottom of the assembly slot 10 b; the guide portion 21 is provided to extend in the first direction, and the guide portion 21 is fitted to the fitting groove 10b in an insertion manner. By this arrangement, the guide portion 21 is restrained by the fitting groove 10b in the third direction, so that the guide portion 21 can be restrained in both the first direction and the third direction, thereby ensuring that the movable blade holder 20 and the movable blade 10 can be kept in a relatively stable state when the movable blade holder 20 is driven.

In addition, when the movable blade holder 20 and the movable blade 10 are assembled, only the guide portion 21 of the movable blade holder 20 needs to be assembled into the assembly groove 10b on the movable blade 10, and even if the assembly boss 211 on the guide portion 21 is partially misplaced with the abdication hole 10a, only the guide portion 21 needs to be pushed to slide in the assembly groove 10b along the first direction so as to adjust the relative positions of the assembly boss 211 and the abdication hole 10a, thereby facilitating the assembly of the movable blade holder 20 and the movable blade 10.

In addition, the assembly groove 10b is formed through a stamping process, the strength of the movable blade 10 is improved when the movable blade 10 is stamped, so that the overall strength of the movable blade 10 is further improved, and further, the movable blade 10 is not easy to be in a polygonal shape. Of course, the assembly groove 10b, the relief hole 10a and the movable teeth 12 may be completed by one punching process, so that the process of producing the movable blade 10 may be further simplified.

Further, the width of the notch of the assembly groove 10b in the third direction is greater than the width of the notch of the assembly groove 10b in the third direction, that is, the notch of the assembly groove 10b is in a horn shape, so that the transmission part 22 and the guide part 21 are convenient to extend into the assembly groove 10b, the transmission part 22 is convenient to pass through the abdication hole 10a, and the guide part 21 is convenient to be positioned and installed in the installation assembly groove 10b, so that the movable cutter holder 20 and the movable cutter 10 are convenient to cooperate.

Referring to fig. 2 and fig. 3, in some embodiments of the present application, the moving blade 10 is provided with at least two positioning holes 10c along the second direction, the at least two positioning holes 10c are arranged at intervals in the first direction, and the at least two positioning holes 10c are further arranged at two sides of the yielding hole 10a in the first direction; at least two positioning columns 212 are correspondingly arranged on the surface of the guide part 21 facing the movable cutter 10, the at least two positioning columns 212 are in one-to-one corresponding plug-in fit with the at least two positioning holes 10c, and one ends of the at least two positioning columns 212 penetrating through the corresponding positioning holes 10c are fixedly connected with the movable cutter 10 through hot melt welding.

At least two reference columns 212 in the above technical scheme can be integrally formed with the guide part 21, so that on one hand, the connection of the reference columns 212 and the guide part 21 is facilitated, and meanwhile, the production and the manufacture of the movable cutter holder 20 are also facilitated, on the other hand, the reference columns 212 and the movable cutter 10 are fixed through hot-melt welding, so that the fixing mode between the reference columns 212 and the positioning holes 10c is simpler, and meanwhile, the hot-melt welding is carried out on one ends of the reference columns 212 extending from the corresponding positioning holes 10c, so that the extending length of the reference columns 212 from the corresponding positioning holes 10c can be shortened, and further, the influence of the reference columns 212 on the normal movement of the movable cutter 10 is avoided.

Further, referring to fig. 4 and 5 together, each positioning hole 10c includes a first mating section 11c and a second mating section 12c that are sequentially connected, the first mating section 11c of each positioning hole 10c is disposed adjacent to the guiding portion 21, the second mating section 12c of each positioning hole 10c is located at a side of the first mating section 11c away from the guiding portion 21, an inner diameter of the first mating section 11c of each positioning hole 10c is smaller than an inner diameter of the second mating section 12c, the first mating section 11c of each positioning hole 10c is in plug-in mating with the corresponding positioning post 212, the second mating section 12c of each positioning hole 10c is in clearance mating with the corresponding positioning post 212, and a portion of each positioning post 212 located in the corresponding second mating section 12c is heat-welded.

By the arrangement, the part of each positioning column 212 positioned in the second matching section 12c can be filled in the second matching section 12c after being subjected to hot melting, so that the outer diameter of the part of each positioning column 212 filled in the second matching section 12c is larger than that of the first matching section 11c of the corresponding positioning hole 10c, each positioning column 212 is not easy to fall off from the blade, the connection stability between the guide part 21 and the movable knife 10 is ensured, and meanwhile, each positioning column 212 is filled in the corresponding second matching section 12c after being subjected to hot melting, and the smoothness of the surface of the movable knife 10 facing away from the guide part 21 is ensured, so that the normal movement of the movable knife 10 is prevented from being influenced by the positioning columns 212.

Referring to fig. 6, in some embodiments of the present application, a guide groove 20a is disposed on a side of the guide portion 21 facing away from the moving blade 10, the guide groove 20a extends along a first direction, groove walls of the guide groove 20a in the first direction are all disposed through, and the guide groove 20a is configured to cooperate with a guide structure (guide rail) of an electric shaver, so that the cooperation of the guide portion 21 and the guide structure (guide rail) of the electric shaver is facilitated, and meanwhile, the guide groove 20a on the guide portion 21 can accommodate the guide structure (guide rail) of the electric shaver, so that the whole volume of the electric shaver can be reduced.

Further, the guide groove 20a has two guide walls 213 disposed opposite to each other in the third direction, at least two abutment protrusions 214 are disposed on each guide wall 213 in a protruding manner, at least two abutment protrusions 214 on each guide wall 213 are disposed at intervals in the first direction, at least two abutment protrusions 214 on each guide wall 213 are disposed in one-to-one correspondence with or in a staggered manner with at least two abutment protrusions 214 on another guide wall 213, and a surface of each abutment protrusion 214 on each guide wall 213 facing the other guide wall 213 is disposed in a protruding arc surface.

By this arrangement, the contact area between each abutment protrusion 214 and the guiding structure (guide rail) of the electric shaver can be reduced, so that the friction between each abutment protrusion 214 and the guiding structure (guide rail) of the electric shaver can be reduced, and the guiding part 21 can slide along the guiding structure (guide rail) of the electric shaver conveniently.

Further, each of the abutment projections 214 is provided to extend from the bottom of the guide groove 20a toward the notch of the guide groove 20a in the second direction, the end of each abutment projection 214 adjacent to the notch of the guide groove 20a is provided with a guide slope 2141, and the guide slope 2141 on each abutment projection 214 is provided so as to facilitate the assembly of the guide structure (rail) of the electric shaver between the two abutment projections 214 oppositely provided in the third direction.

Based on the above embodiment, it should be noted that, the positioning post 212 and the abutment protrusion 214 on the guiding portion 21 may be integrally formed with the guiding portion 21, so that the positioning post 212 and the abutment protrusion 214 are both made of plastic, which is convenient for manufacturing the movable cutter holder 20, on one hand, the positioning post 212 and the movable cutter 10 are convenient for hot-melt welding, and on the other hand, noise generated when the abutment protrusion 214 and the guiding structure (guiding rail) of the electric shaver rub against each other is reduced.

Referring to fig. 2 and 7, in some embodiments of the present application, the movable blade 10 is further provided with two avoidance openings 10d in a penetrating manner, the two avoidance openings 10d are located at two sides of the avoidance hole 10a in the first direction, the two avoidance openings 10d extend along the first direction in a direction away from the avoidance hole 10a and penetrate the movable blade 10, and since the two avoidance openings 10d have a certain length in the first direction, even if two mounting feet of the guiding structure of the electric shaver pass through the corresponding avoidance openings 10d, the movable blade 10 will not contact with two positioning feet of the guiding structure of the electric shaver in the reciprocating movement process, which is further beneficial to reducing the length of the electric shaver in the first direction.

Further, the movable blade 10 is punched from a side adjacent to the guide portion 21 and facing away from the guide portion 21 to form an assembly groove 10b extending in the first direction, a groove wall of the assembly groove 10b in the first direction is penetrated, the relief hole 10a is opened at a groove bottom of the assembly groove 10b, and two relief openings 10d are similarly provided at the groove bottom of the assembly groove 10 b. So set up for the guide part of the guide structure of electric shaver can assemble in the assembly groove 10b, simultaneously two location feet of the guide structure of electric shaver can pass respectively corresponding side dodge opening 10d, just so can reduce electric shaver's thickness in the second direction, and then make electric shaver's structure compacter.

Referring to fig. 2, in some embodiments of the present application, each movable tooth 12 protrudes in the second direction from the surface of the movable blade 10 adjacent to the guide portion 21 in the second direction, a central portion of each movable tooth 12 is concavely formed with a relief recess 12a, one side of each relief recess 12a adjacent to the movable blade 10 is disposed through, and a bottom of each relief recess 12a is disposed flush with the surface of the movable blade 10 adjacent to the guide portion 21 in the second direction. By the arrangement, the contact area between each movable tooth 12 and the static tooth 310 of the static blade 300 of the electric shaver is reduced, so that heat generated when the movable tooth 12 and the static tooth 310 are rubbed with each other can be reduced, meanwhile, the avoiding concave part 12a of the movable tooth 12 can also accommodate hair, and the problem that the hair is accumulated between the movable tooth 12 and the static tooth 310 and the actuating blade 10 is blocked is avoided. In addition, the grinding area of each movable tooth 12 can be reduced.

It should be noted that the movable teeth 12 on the movable blade 10 may be formed by stamping, so that during stamping, the stainless steel sheet can be first stamped by the die under the stainless steel sheet, and then the stainless steel sheet is stamped by the stamping machine, and the abdication hole 10a on the movable blade 10, the movable teeth 12 and the abdication recess 12a on the movable teeth 12 may be formed by stamping in one stamping process, so that the production process of the movable blade 10 is simplified, and the production efficiency of the movable blade 10 is further improved.

Referring to fig. 7 and 8, the present application further provides a tool bit module 1000, which includes a mounting base 200, an elastic member, a stationary blade 300, a stationary rail 400, and a movable blade assembly 100. The specific structure of the movable cutter assembly 100 refers to the above embodiments, and since the cutter head module 1000 adopts all the technical solutions of all the embodiments, the movable cutter assembly also has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

Referring to fig. 9, the mounting base 200 is provided with a mounting groove 210 extending along a first direction, a portion of a groove bottom of the mounting groove 210 is penetrated along a second direction to form a through hole 200a, the static blade 300 is connected with the mounting base 200 and extends along the first direction, the static blade 300 is further arranged to cover a notch of the mounting groove 210, static teeth 310 of the static blade 300 extend out of the mounting groove 210 along a third direction, the movable blade 10 is positioned between the mounting base 200 and the static blade 300, movable teeth 12 extend out of the mounting groove 210 along the third direction, an elastic member is arranged in the mounting groove 210 and elastically supports the movable blade 10, so that the movable blade 10 is always abutted against the static blade 300, a static rail 400 is arranged between the movable blade 10 and the static blade 300, the static rail 400 extends along the first direction, a guide portion 21 of the movable blade 20 is positioned between the movable blade 10 and the static blade 300 and is matched with the static rail 400, and a transmission portion 22 of the movable blade 20 passes through the through hole 200a to be matched with a driving structure of the electric shaver.

It should be noted that the movable blade 10 is stamped from a side adjacent to the guide portion 21 toward a side of the movable blade 10 opposite to the guide portion 21 to form an assembling groove 10b opened toward the stationary blade 300, the movable blade 10 is provided with a mounting groove 210 mounted to a position located in the mounting seat 200, portions of the movable blade 10 located at both sides of the assembling groove 10b in the third direction protrude from the notch of the mounting groove 210, respectively, the assembling groove 10b can accommodate not only the guide portion 21 but also the stationary rail 400, so that the height of the entire tool bit module 1000 is reduced in the second direction.

Further, the moving blade 10 further penetrates through the two avoidance openings 10d, the two avoidance openings 10d are located at two sides of the yielding hole 10a in the first direction, the two avoidance openings 10d extend along the first direction in a direction away from the yielding hole 10a and penetrate through the moving blade 10, the static rail 400 comprises a guide beam 410 and two positioning pins 420, the guide beam 410 of the static rail 400 is welded with the surface of the static blade 300, which faces the moving blade 10, the guide beam 410 is further located in the assembly groove 10b and is matched with the guide groove 20a of the guide part 21, one ends of the two positioning pins 420 are fixedly connected with two ends of the guide beam 410 in the first direction, and the other ends of the two positioning pins 420 respectively penetrate through the avoidance openings 10d at the corresponding sides of the moving blade 10 and are matched with the groove bottom of the mounting groove 210.

Referring to fig. 10, the elastic member is a biasing spring 500, the biasing spring 500 includes a body 510 and elastic supporting arms 520 disposed opposite to each other in a third direction, the body 510 is disposed in the mounting groove 210, the body 510 and the movable blade 10 are disposed at intervals in the second direction, the body 510 is provided with a through hole 511 communicated with the through hole 200a, the through hole 511 is provided for the transmission portion 22 to pass through, the two elastic supporting arms 520 extend from the bottom of the mounting groove 210 to the notch of the mounting groove 210 along the second direction, and the side ends of the two elastic supporting arms 520 away from the body 510 are respectively elastically abutted against two sides of the movable blade 10 in the third direction, so that the movable blade 10 is always abutted against the static blade 300.

Further, at least two assembling posts 220 are disposed at the bottom of the mounting groove 210, the at least two assembling posts 220 are located at two sides of the through hole 200a in the first direction, at least two assembling holes 512 are disposed through the body 510, the at least two assembling holes 512 are located at two sides of the yielding hole 10a in the first direction, and the at least two assembling holes 512 are in one-to-one corresponding plug-in fit with the at least two assembling posts 220, so that the biasing spring 500 is further facilitated to be fixed in the mounting groove 210, and therefore, the problem that the biasing spring 500 is displaced relative to the mounting seat 200 in the first direction when the movable knife 10 slides relative to the biasing spring 500 in the first direction is avoided, namely, smooth sliding of the movable knife 10 blade relative to the biasing spring 500 is ensured.

The application also provides an electric shaver, which comprises a driving mechanism and a shaver head module 1000, wherein the driving mechanism is in transmission connection with the transmission part 22 of the movable shaver seat 20 in the shaver head module 1000 so as to drive the movable shaver 10 to reciprocate, and the specific structure of the shaver head module 1000 refers to the embodiment.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be appreciated by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not drive the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims (15)

1. The movable knife assembly is characterized by comprising a movable knife and a movable knife holder; wherein,,

the movable cutter is provided with a trimming edge extending along a first direction, the trimming edge is provided with a plurality of movable teeth which are sequentially arranged along the first direction, the movable cutter is provided with a yielding hole in a penetrating manner along a second direction, the yielding hole is arranged at intervals with the trimming edge in a third direction, and the first direction, the second direction and the third direction are mutually perpendicular to each other;

the movable cutter holder is arranged on the movable cutter and is relatively fixed with the movable cutter in the first direction, the movable cutter holder comprises a guide part and a transmission part, the guide part is made of plastic, the guide part is positioned on one side of the movable cutter in the second direction and is matched with a guide structure of the electric shaver, and the transmission part penetrates through the abdicating hole and extends to the other side of the movable cutter in the second direction and is matched with a driving structure of the electric shaver.

2. The movable cutter assembly according to claim 1, wherein an assembling boss is convexly arranged on the surface of the guide part facing the yielding hole, the assembling boss is in plug-in fit with the yielding hole, two side walls of the assembling boss in the first direction are respectively abutted with two hole walls of the yielding hole in the first direction, the transmission part is connected with the surface of the assembling boss facing away from the guide part, and the transmission part is in clearance fit with the yielding hole.

3. The movable blade assembly according to claim 2, wherein the relief hole is provided in a middle portion of the movable blade in a first direction, the relief hole is provided to extend in the first direction, the fitting boss is provided in a middle portion of the guide portion in the first direction, and the fitting boss is further provided in the first direction.

4. The movable blade assembly according to claim 2, wherein the movable blade is punched from a side adjacent to the guide portion to a side opposite to the guide portion to form an assembly groove extending in the first direction, the relief hole is formed in a bottom of the assembly groove, and the guide portion is assembled in the assembly groove.

5. The movable cutter assembly according to claim 1, wherein the movable cutter is provided with at least two positioning holes penetrating along the second direction, and the at least two positioning holes are further respectively arranged at two sides of the yielding hole in the first direction; the guide part is provided with at least two locating columns towards the surface of the movable knife correspondingly, the at least two locating columns are in one-to-one corresponding plug-in connection with the at least two locating holes, and one end of the at least two locating columns penetrating through the corresponding locating holes is fixedly connected with the movable knife through hot melt welding.

6. The movable blade assembly according to claim 5, wherein each positioning hole comprises a first matching section and a second matching section which are communicated in sequence, the first matching section of each positioning hole is arranged adjacent to the guide part, the second matching section of each positioning hole is positioned on one side of the first matching section away from the guide part, the inner diameter of the first matching section of each positioning hole is smaller than that of the second matching section, the first matching section of each positioning hole is in plug-in matching with a corresponding positioning column, the second matching section of each positioning hole is in clearance matching with a corresponding positioning column, and the part of each positioning column positioned in the corresponding second matching section is subjected to hot-melt welding.

7. The movable blade assembly according to claim 1, wherein a side of the guide portion facing away from the movable blade is provided with a guide groove extending in the first direction, and groove walls of the guide groove in the first direction are all provided therethrough for cooperation with a guide structure of an electric shaver.

8. The movable cutter assembly according to claim 7, wherein the guide groove is provided with two guide walls which are oppositely arranged in the third direction, at least two abutting projections are convexly arranged on each guide wall, and the surface of each abutting projection on each guide wall facing the other guide wall is a convex cambered surface.

9. The movable blade assembly according to claim 8, wherein each of the abutment projections is provided extending from a bottom of the guide groove toward a notch of the guide groove in the second direction, and an end of each of the abutment projections adjacent to the notch of the guide groove is provided with a guide slope.

10. The movable blade assembly of claim 1, wherein the movable blade is further provided with two relief openings therethrough, the two relief openings being located on opposite sides of the relief hole in the first direction, the two relief openings further extending in a direction away from the relief hole in the first direction and extending through the movable blade.

11. The movable blade assembly according to claim 10, wherein the movable blade is punched from a side adjacent to the guide part to a side opposite to the guide part to form an assembly groove extending along the first direction, and the yielding hole and the two avoidance openings are arranged at the bottom of the assembly groove;

the guide part is assembled in the assembly groove, one side of the guide part, which is opposite to the movable cutter, is provided with a guide groove, the guide groove extends along the first direction, the groove walls of the guide groove in the first direction are all penetrated, and the guide groove is used for being matched with a guide structure of the electric shaver.

12. The moving blade assembly according to any one of claims 1 to 11, wherein each of the moving teeth protrudes in the second direction from a surface of the moving blade adjacent to the guide portion in the second direction, a central portion of each of the moving teeth is concavely formed into a relief recess, one side of each of the relief recesses adjacent to the guide portion is disposed therethrough, and a bottom portion of each of the relief recesses is disposed flush with a surface of the moving blade adjacent to the guide portion in the second direction.

13. A tool bit module comprising a mounting base, an elastic member, a stationary blade, a stationary rail, and a movable blade assembly according to any one of claims 1 to 12; wherein,,

the static knife is arranged on one side of the mounting seat in the second direction, the movable knife is arranged between the static knife and the mounting seat, and the elastic piece is arranged between the movable knife and the mounting seat so as to elastically support the movable knife;

the static rail is arranged between the movable cutter and the static cutter, the guide part is in sliding connection with the static rail, the mounting seat is provided with a through hole in a penetrating manner along the second direction, and the transmission part penetrates through the through hole to be matched with a driving structure of the electric shaver.

14. The tool bit module of claim 13, wherein a mounting groove is concavely formed on one side of the mounting seat adjacent to the static tool, and the through hole is formed in the bottom of the mounting groove; the elastic piece is a biasing elastic piece, the biasing elastic piece comprises a body and elastic supporting arms which are oppositely arranged in the third direction, the body is arranged at the bottom of the mounting groove and is arranged with the movable cutter at intervals, the body is provided with a dodging hole communicated with the through hole in a penetrating mode, the dodging hole is used for the transmission part to pass through, the two elastic supporting arms extend from the bottom of the mounting groove to the notch of the mounting groove in the second direction, and the two elastic supporting arms are far away from the side ends of the body and are respectively in elastic butt connection with the two sides of the movable cutter in the third direction.

15. An electric shaver, comprising a movable cutter assembly as claimed in claim 13 or 15.