Movable cutter assembly, cutter head module and electric shaver

Abstract

The application discloses a moving cutter assembly, a cutter head module and an electric shaver. The moving cutter assembly comprises a moving cutter and a moving cutter seat. The moving cutter has a trimming edge extending along a first direction, and the trimming edge is provided with a plurality of moving teeth arranged in sequence along the first direction. The moving cutter is provided with a clearance hole penetrating in a second direction. The clearance hole is arranged in a third direction and is spaced apart from the trimming edge. The first direction, the second direction and the third direction are arranged perpendicularly to each other in pairs. The moving cutter seat is installed on the moving cutter and is kept relatively fixed with the moving cutter in the first direction. The moving cutter seat comprises a guide part and a transmission part made of plastic. The guide part is located on one side of the moving cutter in the second direction to cooperate with a guide structure of the electric shaver. The transmission part extends to the other side of the moving cutter in the second direction through the clearance hole to cooperate with a driving structure of the electric shaver. In this way, the noise of the electric shaver during work can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric shaver devices, in particular to a moving cutter assembly, a cutter head module and an electric shaver. BACKGROUND

[0002] Electric shavers are increasingly becoming common household washing and grooming appliances. The existing cutter head module of an electric shaver is usually composed of a mounting seat, an elastic member, a moving cutter, a moving cutter seat, a static rail and a static cutter. The static cutter, the static rail, the moving cutter, the elastic member and the mounting seat are sequentially arranged from top to bottom. The moving cutter is in sliding connection with the static rail. The moving cutter seat is arranged between the mounting seat and the moving cutter. The moving cutter seat is in transmission connection with the driving structure of the electric shaver through the mounting seat.

[0003] The moving cutter, the moving cutter seat, the static rail and the static cutter in the existing cutter head module of an electric shaver are usually made of stainless steel. Therefore, the moving cutter and the static rail, the moving cutter seat and the moving cutter, and the moving cutter seat and the driving structure are in rigid contact. After the moving cutter is driven by the driving structure, the mutual friction between the moving cutter and the static rail, the moving cutter seat and the moving cutter, and the moving cutter seat and the driving structure generates relatively large noise. Therefore, improvement is needed. SUMMARY

[0004] The main purpose of the present application is to provide a moving cutter assembly, which aims to reduce the noise generated by the electric shaver during operation.

[0005] To achieve the above-mentioned purpose, the present application provides a moving cutter assembly, which comprises a moving cutter and a moving cutter seat. The moving cutter has a trimming edge extending in a first direction. The trimming edge is provided with a plurality of moving teeth arranged in the first direction. The moving cutter is provided with a clearance hole extending in a second direction. The clearance hole is arranged in a third direction and spaced apart from the trimming edge. The first direction, the second direction and the third direction are arranged perpendicular to each other in pairs.

[0006] The moving cutter seat is installed on the moving cutter and is relatively fixed with the moving cutter in the first direction. The moving cutter seat comprises a guide part and a transmission part made of plastic. The guide part is located on one side of the moving cutter in the second direction to cooperate with the guide structure of the electric shaver. The transmission part extends to the other side of the moving cutter in the second direction through the clearance hole to cooperate with the driving structure of the electric shaver.

[0007] The moving cutter seat is installed on the moving cutter and is relatively fixed with the moving cutter in the first direction. The moving cutter seat comprises a guide part and a transmission part made of plastic. The guide part is located on one side of the moving cutter in the second direction to cooperate with the guide structure of the electric shaver. The transmission part extends to the other side of the moving cutter in the second direction through the clearance hole to cooperate with the driving structure of the electric shaver.

[0008] In some embodiments of the present application, the surface of the guide portion facing the accommodation hole is provided with a fitting boss, the fitting boss is inserted into the accommodation hole, the two side walls of the fitting boss in the first direction respectively abut the two hole walls of the accommodation hole in the first direction, the transmission portion is connected to the surface of the fitting boss away from the guide portion, and the transmission portion is also in clearance fit with the accommodation hole.

[0009] In some embodiments of the present application, the accommodation hole is arranged at the middle of the moving blade in the first direction, and the fitting boss is arranged at the middle of the guide portion in the first direction.

[0010] In some embodiments of the present application, the moving blade is stamped from the side adjacent to the guide portion to the side away from the guide portion to form a fitting groove extending in the first direction, the accommodation hole is arranged at the groove bottom of the fitting groove, and the guide portion is arranged in the fitting groove.

[0011] In some embodiments of the present application, the moving blade is provided with at least two positioning holes penetrating in the second direction, and the at least two positioning holes are arranged on the two sides of the accommodation hole in the first direction; the surface of the guide portion facing the moving blade is correspondingly provided with at least two positioning columns, the at least two positioning columns are in one-to-one correspondence with the at least two positioning holes, and one end of the at least two positioning columns penetrating through the corresponding positioning hole is fixedly connected to the moving blade by hot melt welding.

[0012] In some embodiments of the present application, each positioning hole comprises a first fit section and a second fit section in sequence, the first fit section of each positioning hole is arranged adjacent to the guide portion, the second fit section of each positioning hole is located on the side of the first fit section away from the guide portion, the inner diameter of the first fit section of each positioning hole is smaller than that of the second fit section, the first fit section of each positioning hole is in inserted fit with the corresponding positioning column, the second fit section of each positioning hole is in clearance fit with the corresponding positioning column, and the part of the corresponding positioning column located in the second fit section is hot melt welded.

[0013] In some embodiments of the present application, the side of the guide portion away from the moving blade is provided with a guide groove extending in the first direction, the groove wall of the guide groove in the first direction is penetrated, and the guide groove is used to cooperate with the guide structure of the electric shaver.

[0014] In some embodiments of the present application, the guide slot has two guide walls oppositely arranged in the third direction, and at least two abutting protrusions are protruded from each of the guide walls, and each of the abutting protrusions of each of the guide walls is a convex arc surface facing the surface of the other guide wall.

[0015] In some embodiments of the present application, each of the abutting protrusions extends from the bottom of the guide slot to the opening of the guide slot in the second direction, and a guide inclined surface is arranged at the end of each of the abutting protrusions adjacent to the opening of the guide slot.

[0016] In some embodiments of the present application, the movable cutter is further provided with two avoiding openings, and the two avoiding openings are located on both sides of the accommodation hole in the first direction, and the two avoiding openings extend through the movable cutter in the direction away from the accommodation hole in the first direction.

[0017] In some embodiments of the present application, the movable cutter is punched from one side adjacent to the guide portion to the side opposite to the guide portion to form an assembly slot extending in the first direction, and the accommodation hole and the two avoiding openings are arranged on the bottom of the assembly slot.

[0018] The guide portion is assembled in the assembly slot, and the guide portion is provided with a guide slot on the side opposite to the movable cutter, and the guide slot extends in the first direction, and the guide slot is provided with a slot wall in the first direction, and the guide slot is used to cooperate with the guide structure of the electric shaver.

[0019] In some embodiments of the present application, each of the movable teeth protrudes from the surface of the movable cutter adjacent to the guide portion in the second direction, and the middle part of each of the movable teeth is recessed to form an avoiding recess, and each of the avoiding recesses is arranged through the side adjacent to the guide portion, and the bottom of each of the avoiding recesses is arranged flush with the surface of the movable cutter adjacent to the guide portion in the second direction.

[0020] The present application further provides a cutter head module, which comprises a mounting seat, a resilient member, a static cutter, a static rail and a movable cutter assembly.

[0021] The static cutter is arranged on one side of the mounting seat in the second direction, the movable cutter is arranged between the static cutter and the mounting seat, and the resilient member is arranged between the movable cutter and the mounting seat to elastically support the movable cutter.

[0022] The static rail is arranged between the movable cutter and the static cutter, the guide portion is in sliding connection with the static rail, the mounting seat is provided with a through hole arranged through in the second direction, and the transmission portion cooperates with the driving structure of the electric shaver through the through hole.

[0023] In some embodiments of the present application, the mounting seat is recessed with a mounting groove adjacent to one side of the static blade, and the through hole is arranged at the groove bottom of the mounting groove; the elastic member is a biasing spring piece, which comprises a body and two elastic support arms oppositely arranged in the third direction, the body is arranged at the groove bottom of the mounting groove and is spaced apart from the moving blade, the body is provided with an avoiding hole communicated with the through hole, the avoiding hole is for the transmission part to pass through, and the two elastic support arms extend from the groove bottom of the mounting groove to the groove opening of the mounting groove along the second direction, and the side ends of the two elastic support arms away from the body are respectively elastically abutted with two sides of the moving blade in the third direction.

[0024] The present application also provides an electric shaver, which comprises a moving blade assembly, the moving blade assembly comprises a mounting seat, an elastic member, a static blade, a static rail and a moving blade assembly; wherein,

[0025] The static blade is arranged at one side of the mounting seat in the second direction, the moving blade is arranged between the static blade and the mounting seat, and the elastic member is arranged between the moving blade and the mounting seat to elastically support the moving blade.

[0026] The static rail is arranged between the moving blade and the static blade, the guide part is in sliding connection with the static rail, the mounting seat is provided with a through hole penetrating in the second direction, and the transmission part passes through the through hole to cooperate with the driving structure of the electric shaver.

[0027] In the present application, the avoiding hole penetrating in the second direction is arranged on the moving blade, the guide part and the transmission part of the moving blade seat are made of plastic, the guide part of the moving blade seat cooperates with the guide structure of the electric shaver, and the transmission part of the moving blade seat cooperates with the driving structure of the electric shaver. Since the guide part and the transmission part are made of plastic, the noise generated by the mutual friction between plastic and metal parts is much smaller than the noise generated by the mutual friction between metal parts, so that the noise of the electric shaver with the moving blade assembly is relatively small when working. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0029] Figure 1 It is an embodiment of the structure of the moving blade assembly of the present application.

[0030] Figure 2 It is an embodiment of the structure of the moving blade of the present application. Figure 1 the structure of the moving blade of the present application.

[0031] Figure 3 For Figure 1 Structure diagram of the moving knife seat;

[0032] Figure 4 For Figure 2 Sectional view along A-A;

[0033] Figure 5 For Figure 4 Enlarged diagram of partial B;

[0034] Figure 6 For Figure 1 Structure diagram of the moving knife seat from another perspective;

[0035] Figure 7 Sectional view of the tool head module of the present application;

[0036] Figure 8 For Figure 7 Exploded view of the tool head module;

[0037] Figure 9 For Figure 8 Structure diagram of the mounting seat;

[0038] Figure 10 For Figure 8 Structure diagram of the biasing spring.

[0039] Reference Name Reference Name 100 Movable cutter assembly 2141 Guide slope 10 Movable cutter 22 Transmission part 11 Trimming edge 1000 Cutter head module 12 Movable tooth 200 Mounting seat 12a Avoidance recess 210 Mounting slot 10a Relief hole 220 Assembly column 10b Assembly slot 200a Through hole 10c Positioning hole 300 Fixed cutter 11c First matching section 310 Fixed tooth 12c Second matching section 400 Fixed rail 10d Avoidance opening 410 Guide beam 20 Movable cutter seat 420 Positioning foot 21 Guide part 500 Biasing elastic sheet 211 Assembly boss 510 Body 212 Positioning column 511 Avoidance hole 20a Guide slot 512 Assembly hole 213 Guide wall 520 Elastic support arm 214 Abutting protrusion

[0040] Explanation of reference numerals:

[0041] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those of ordinary skill in the art without any creative work fall within the protection scope of the present application.

[0043] Please refer to Figures 1 to 3The present application provides a moving cutter assembly 100, which comprises a moving cutter 10 and a moving cutter seat 20; wherein the moving cutter 10 has a trimming edge 11 extending along a first direction, the trimming edge 11 is provided with a plurality of moving teeth 12 arranged in sequence along the first direction, the moving cutter 10 is provided with a clearance hole 10a along a second direction, and the clearance hole 10a is arranged in a third direction and spaced from the trimming edge 11; the first direction, the second direction and the third direction are arranged perpendicularly to each other in pairs.

[0044] The moving cutter seat 20 is mounted on the moving cutter 10 and is kept relatively fixed with the moving cutter 10 in the first direction, the moving cutter seat 20 comprises a guide part 21 and a transmission part 22 made of plastic, the guide part 21 is located on one side of the moving cutter 10 in the second direction to cooperate with the guide structure of the electric shaver, and the transmission part 22 extends to the other side of the moving cutter 10 in the second direction through the clearance hole 10a to cooperate with the driving structure of the electric shaver.

[0045] The external contour of the moving cutter 10 is generally rectangular, the external contour of the moving cutter 10 can also be arranged in a waist type, and the external contour of the moving cutter 10 can also be arranged in other shapes, which are not listed here. The moving cutter 10 is usually made of stainless steel, such as 3Cr13, 4Cr13 and 6Cr13 ferrite stainless steel. Since the stainless steel has good strength and ductility, the stainless steel material can be pressed into a thin sheet through the stamping process, and the moving teeth 12 on the moving cutter 10 can also be stamped in one time.

[0046] The trimming edge 11 on the moving cutter 10 is one side edge of the moving cutter 10 in the first direction. When the external contour of the moving cutter 10 is arranged in a rectangular shape, the trimming edge 11 can be one side edge extending along the length direction of the moving cutter 10, and when the external contour of the moving cutter 10 is arranged in a square shape, the trimming edge 11 can be formed along any one side edge of the moving cutter 10. The number of the trimming edge 11 on the moving cutter 10 can be one or two. When the number of the trimming edge 11 on the moving cutter 10 is two, the two trimming edges 11 on the moving cutter 10 are arranged in the third direction.

[0047] The clearance hole 10a on the moving cutter 10 can be arranged in the middle of the moving cutter 10, the clearance hole 10a can also be arranged at a position deviating from the middle of the moving cutter 10, and the clearance hole 10a can also be arranged at other positions of the moving cutter 10, as long as the clearance hole 10a is arranged in the third direction and spaced from the trimming edge 11. The shape of the clearance hole 10a has many kinds, and the clearance hole 10a can be a regular shape, such as a circular hole, a square hole, a waist-shaped hole, etc., and the clearance hole 10a can also be an irregular shape, and the shape of the clearance hole 10a is not limited here.

[0048] There are many ways for the movable cutter seat 20 and the movable cutter 10 to keep relatively fixed in the first direction, for example, the movable cutter seat 20 and the movable cutter 10 are connected by screws, rivets and other ways, for example, the movable cutter seat 20 and the movable cutter 10 are positioned by the positioning structure of the plug-in cooperation, the movable cutter seat 20 and the movable cutter 10 can also be positioned in other ways, which will not be listed here.

[0049] Since the movable cutter seat 20 includes the guide part 21 and the transmission part 22, the guide part 21 and the transmission part 22 are fixedly connected, therefore, the movable cutter seat 20 and the movable cutter 10 keep relatively fixed in the first direction, which can be realized by the cooperation of the transmission part 22 and the movable cutter 10, or by the cooperation of the guide part 21 and the movable cutter 10, or by the cooperation of the transmission part 22 and the guide part 21 and the movable cutter 10, which will not be limited here.

[0050] Please refer to Figure 7 When assembling the electric shaver equipped with the movable cutter assembly 100, the movable cutter 10 is arranged between the mounting seat 200 and the static cutter 300 of the electric shaver, the elastic member of the electric shaver is arranged between the mounting seat 200 and the movable cutter 10 and elastically supports the movable cutter 10, so that the movable cutter 10 always abuts against the static cutter 300, the guide structure is arranged between the static cutter 300 and the movable cutter 10, which is usually a guide rail made of stainless steel, the guide part 21 of the movable cutter seat 20 is located between the movable cutter 10 and the static cutter 300 and is slidably connected with the guide rail, and the transmission part 22 of the movable cutter seat 20 passes through the accommodation hole 10a on the movable cutter 10 and cooperates with the driving structure (i.e. the linear motor) of the electric shaver, that is, the transmission part 22 of the movable cutter seat 20 cooperates with the output shaft of the linear motor of the driving structure.

[0051] The present application opens the accommodation hole 10a on the movable cutter 10 which penetrates in the second direction, the guide part 21 and the transmission part 22 of the movable cutter seat 20 are both made of plastic, the guide part 21 of the movable cutter seat 20 cooperates with the guide structure of the electric shaver, and the transmission part 22 of the movable cutter seat 20 cooperates with the driving structure of the electric shaver, since the guide part 21 and the transmission part 22 are both made of plastic, the noise generated by the mutual friction between plastic and metal parts is much smaller than the noise generated by the mutual friction between metal parts and metal parts, so that the noise of the electric shaver equipped with the movable cutter assembly 100 is relatively small when working.

[0052] In addition, the movable cutter 10 cooperates with the driving structure and the guide structure of the electric shaver through the movable cutter seat 20, so that the structure of the movable cutter 10 can be simplified, therefore, only one stamping process is needed when producing the movable cutter 10, that is, the accommodation hole 10a and the plurality of movable teeth 12 on the movable cutter 10 are stamped and formed, thereby facilitating the production and manufacturing of the movable cutter 10. In addition, the movable cutter seat 20 is made of plastic, the cost of plastic is lower than that of metal, so that the production cost of the movable cutter assembly 100 can also be reduced.

[0053] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the guide portion 21 of the movable cutter holder 20 cooperates with the movable cutter 10 to keep the movable cutter holder 20 relatively fixed with the movable cutter 10 in the first direction. Specifically, the surface of the guide portion 21 facing the accommodation hole 10a is provided with a fitting boss 211, which is insertedly fitted with the accommodation hole 10a, and the two side walls of the fitting boss 211 in the first direction abut against the two hole walls of the accommodation hole 10a in the first direction. Of course, the two side walls of the fitting boss 211 in the third direction can also cooperate with the two hole walls of the accommodation hole 10a in the third direction. The transmission portion 22 is connected to the surface of the fitting boss 211 opposite to the guide portion 21, and the transmission portion 22 is also gap-fitted with the accommodation hole 10a.

[0054] In this way, on the one hand, the positioning and installation of the movable cutter holder 20 and the movable cutter 10 are facilitated, and on the other hand, the movable cutter holder 20 is kept relatively fixed with the movable cutter 10 in the first direction, so that the movable cutter 10 can move together with the movable cutter holder 20. In addition, since the transmission portion 22 has a certain length in the second direction, the gap-fitting of the transmission portion 22 with the accommodation hole 10a also avoids the problem that the position where the transmission portion 22 is connected to the guide portion 21 is easily broken due to excessive shear stress when the transmission portion 22 drives the movable cutter 10 to move under the driving of the driving structure of the electric shaver.

[0055] Further, please refer to Figure 2 and Figure 3 In some embodiments of the present application, the accommodation hole 10a is centrally arranged, and the accommodation hole 10a is also arranged to extend along the first direction, i.e., the accommodation hole 10a is located at the middle position of the movable cutter 10 in the first direction, and the accommodation hole 10a is also located at the middle position of the movable cutter 10 in the third direction; the fitting boss 211 is correspondingly arranged along the first direction, and the two side walls of the fitting boss 211 in the first direction abut against the two hole walls of the accommodation hole 10a in the first direction.

[0056] In this way, on the one hand, it is ensured that the force in the first direction and the force in the third direction of the movable cutter 10 are balanced when the movable cutter 10 moves with the movable cutter holder 20, so that the movable cutter 10 can move smoothly and smoothly; on the other hand, the accommodation hole 10a and the fitting boss 211 have a certain length in the first direction, so that the problem that the length of the fitting boss 211 in the first direction is too short and the strength of the fitting boss 211 is weak and broken is avoided.

[0057] Further, the height of the assembly protrusion 211 in the second direction is less than or equal to the depth of the clearance hole 10a in the second direction, but the height of the assembly protrusion 211 is not too small, and therefore, the height of the assembly protrusion 211 in the second direction is less than or equal to the depth of the clearance hole 10a in the second direction, and greater than or equal to the depth of the clearance hole 10a in the second direction. In this way, when the assembly protrusion 211 is inserted into the clearance hole 10a, the assembly protrusion 211 is accommodated in the clearance hole 10a, which not only avoids the assembly protrusion 211 extending out of the clearance hole 10a and affecting the normal movement of the moving knife 10, but also ensures that the assembly protrusion 211 and the moving knife 10 are not easily separated.

[0058] Based on the above embodiments, please refer to Figures 1 to 3 In some embodiments of the present application, the moving knife 10 is stamped from one side adjacent to the guide portion 21 to the side opposite to the guide portion 21 to form an assembly groove 10b extending in the first direction, and the clearance hole 10a is formed in the groove bottom of the assembly groove 10b; the guide portion 21 extends in the first direction, and the guide portion 21 is inserted into the assembly groove 10b. In this way, the guide portion 21 is constrained in the third direction by the assembly groove 10b, so that the guide portion 21 is constrained in both the first direction and the third direction, thereby ensuring that the moving knife seat 20 and the moving knife 10 can maintain a relatively stable state when the moving knife seat 20 is driven.

[0059] In addition, when the moving knife seat 20 and the moving knife 10 are assembled, only the guide portion 21 of the moving knife seat 20 needs to be assembled into the assembly groove 10b on the moving knife 10, and even if the assembly protrusion 211 on the guide portion 21 is partially misaligned with the clearance hole 10a, only the guide portion 21 needs to be pushed in the first direction to slide in the assembly groove 10b to adjust the relative position of the assembly protrusion 211 and the clearance hole 10a, which facilitates the assembly of the moving knife seat 20 and the moving knife 10.

[0060] In addition, the assembly groove 10b is formed by a stamping process, and the strength of the moving knife 10 piece is improved when it is stamped, so that the overall strength of the moving knife 10 piece is further improved, thereby ensuring that the moving knife 10 piece is not easily deformed. Of course, the assembly groove 10b, the clearance hole 10a, and the moving tooth 12 can also be completed by one stamping process, which can further simplify the production process of the moving knife 10 piece.

[0061] Further, the width of the slot opening of the assembly slot 10b in the third direction is greater than the width of the slot bottom of the assembly slot 10b in the third direction, that is, the slot opening of the assembly slot 10b is set in a trumpet shape, which facilitates the extension of the transmission part 22 and the guide part 21 into the assembly slot 10b, so that the transmission part 22 can pass through the accommodation hole 10a, and the guide part 21 can be positioned and installed in the assembly slot 10b, thereby facilitating the cooperation of the movable tool holder 20 and the movable tool 10.

[0062] Please refer to Figure 2 and Figure 3 In some embodiments of the present application, the movable tool 10 is provided with at least two positioning holes 10c extending in 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 arranged on both sides of the accommodation hole 10a in the first direction; the surface of the guide part 21 facing the movable tool 10 is correspondingly provided with at least two positioning columns 212, the at least two positioning columns 212 are one-to-one correspondingly inserted and matched with the at least two positioning holes 10c, and one end of the at least two positioning columns 212 passing through the corresponding positioning hole 10c is further fixedly connected with the movable tool 10 by hot melting welding.

[0063] The at least two positioning columns 212 in the above technical solution can be integrally formed with the guide part 21, which facilitates the connection of the positioning column 212 with the guide part 21 and the production and manufacturing of the movable tool holder 20, and on the other hand, the positioning column 212 is fixedly connected with the movable tool 10 by hot melting welding, which makes the fixing mode between the positioning column 212 and the positioning hole 10c simpler, and at the same time, the one end of the positioning column 212 extending out of the corresponding positioning hole 10c is hot melting welded, which can also reduce the length of the one end of the positioning column 212 extending out of the corresponding positioning hole 10c, thereby avoiding the influence of the positioning column 212 on the normal movement of the movable tool 10.

[0064] Further, please refer to Figure 4 and Figure 5 Each positioning hole 10c comprises a first matching section 11c and a second matching section 12c which are communicated in sequence, the first matching section 11c of each positioning hole 10c is arranged adjacent to the guide part 21, the second matching section 12c of each positioning hole 10c is located on the side of the first matching section 11c away from the guide part 21, the inner diameter of the first matching section 11c of each positioning hole 10c is smaller than that of the second matching section 12c, the first matching section 11c of each positioning hole 10c is inserted and matched with the corresponding positioning column 212, the second matching section 12c of each positioning hole 10c is gap matched with the corresponding positioning column 212, and the part of each positioning column 212 located in the corresponding second matching section 12c is hot melting welded.

[0065] In this way, the part of each positioning column 212 located in the second matching section 12c can be filled in the second matching section 12c after hot melting, so that the outer diameter of the part of each positioning column 212 filled in the second matching section 12c is greater than the first matching section 11c of the corresponding positioning hole 10c, thereby preventing each positioning column 212 from falling off the blade, and ensuring the stability of the connection between the guide part 21 and the moving blade 10. In addition, after hot melting and welding, each positioning column 212 is filled in the corresponding second matching section 12c, which ensures the flatness of the surface of the moving blade 10 facing away from the guide part 21, thereby preventing the positioning column 212 from affecting the normal movement of the moving blade 10.

[0066] Please refer to Figure 6 In some embodiments of the present application, the side of the guide part 21 facing away from the moving blade 10 is provided with a guide groove 20a extending along the first direction, and the groove wall of the guide groove 20a in the first direction is throughly arranged. The guide groove 20a is used to cooperate with the guide structure (guide rail) of the electric shaver. In this way, the cooperation between the guide part 21 and the guide structure (guide rail) of the electric shaver is facilitated, and the guide groove 20a on the guide part 21 can accommodate the guide structure (guide rail) of the electric shaver, thereby reducing the volume of the entire electric shaver.

[0067] Further, the guide groove 20a has two guide walls 213 oppositely arranged in the third direction, and at least two abutting protrusions 214 are protrudingly arranged on each guide wall 213. The at least two abutting protrusions 214 on each guide wall 213 are arranged in the first direction, and the at least two abutting protrusions 214 on each guide wall 213 are arranged one by one or staggered with the at least two abutting protrusions 214 on the other guide wall 213. The surface of each abutting protrusion 214 on each guide wall 213 facing the surface of the other guide wall 213 is arranged as a convex arc surface.

[0068] In this way, the contact area between each abutting protrusion 214 and the guide structure (guide rail) of the electric shaver can be reduced, so that the friction between each abutting protrusion 214 and the guide structure (guide rail) of the electric shaver can be reduced, thereby facilitating the sliding of the guide part 21 along the guide structure (guide rail) of the electric shaver.

[0069] Further, each abutting protrusion 214 is arranged extending from the groove bottom of the guide groove 20a to the groove opening of the guide groove 20a along the second direction, and each abutting protrusion 214 is provided with a guide inclined surface 2141 adjacent to the end portion of the groove opening of the guide groove 20a. In this way, the guide inclined surface 2141 on each abutting protrusion 214 facilitates the assembly of the guide structure (guide rail) of the electric shaver between the two oppositely arranged abutting protrusions 214 in the third direction.

[0070] Based on the above embodiments, it should be noted that the positioning column 212 and the abutting protrusion 214 on the guide portion 21 can be integrally formed with the guide portion 21. In this way, the production of the movable cutter seat 20 is facilitated, and the positioning column 212 and the abutting protrusion 214 are both made of plastic, which facilitates the hot melting welding of the positioning column 212 and the movable cutter 10, and reduces the noise generated when the abutting protrusion 214 and the guide structure (guide rail) of the electric shaver rub against each other.

[0071] Referring to Figure 2 and Figure 7 In some embodiments of the present application, the movable cutter 10 is further provided with two avoidance openings 10d, which are located on both sides of the accommodation hole 10a in the first direction and extend through the movable cutter 10 away from the accommodation hole 10a. Even if the two mounting feet of the guide structure of the electric shaver pass through the corresponding avoidance openings 10d, the movable cutter 10 will not contact the two positioning feet of the guide structure of the electric shaver during the reciprocating movement, which is beneficial to reducing the length of the electric shaver in the first direction.

[0072] Further, the movable cutter 10 is stamped from the side adjacent to the guide portion 21 to the side away from the guide portion 21 to form an assembly groove 10b extending in the first direction. The accommodation hole 10a is formed in the groove bottom of the assembly groove 10b, and the two avoidance openings 10d are also formed in the groove bottom of the assembly groove 10b. In this way, the guide portion of the guide structure of the electric shaver can be assembled into the assembly groove 10b, and the two positioning feet of the guide structure of the electric shaver can pass through the corresponding avoidance openings 10d, which can reduce the thickness of the electric shaver in the second direction, and further make the structure of the electric shaver more compact.

[0073] Referring to Figure 2 In some embodiments of the present application, each movable tooth 12 protrudes from the surface of the movable cutter 10 adjacent to the guide portion 21 in the second direction. The middle part of each movable tooth 12 is recessed to form an avoidance recess 12a, each avoidance recess 12a is formed through the side of the movable cutter 10 adjacent to the guide portion 21, and the bottom of each avoidance recess 12a is flush with the surface of the movable cutter 10 adjacent to the guide portion 21 in the second direction. In this way, the contact area between each movable tooth 12 and the static tooth 310 of the static cutter 300 of the electric shaver is reduced, which can reduce the heat generated when the movable tooth 12 and the static tooth 310 rub against each other. In addition, the avoidance recess 12a of the movable tooth 12 can also accommodate hair, which can prevent the hair from accumulating between the movable tooth 12 and the static tooth 310, thereby preventing the movable cutter 10 from being stuck. Furthermore, the grinding area of each movable tooth 12 can also be reduced.

[0074] It is worth noting that the moving teeth 12 on the moving cutter 10 can be formed by stamping, so that when stamping, the mold can be first placed under the stainless steel sheet, and then the stainless steel sheet is stamped by the stamping machine. The accommodation hole 10a on the moving cutter 10, the moving teeth 12 and the accommodation recess 12a on the moving teeth 12 can be formed by stamping in one stamping process, which simplifies the production process of the moving cutter 10, and further improves the production efficiency of the moving cutter 10.

[0075] Please refer to Figure 7 and Figure 8 , the application also provides a cutter module 1000, which comprises a mounting seat 200, an elastic member, a static cutter 300, a static rail 400 and a moving cutter assembly 100. The specific structure of the moving cutter assembly 100 is referred to the above-mentioned embodiments. Since the cutter module 1000 adopts all the technical solutions of the above-mentioned embodiments, it also has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0076] Please refer to Figure 9 , the mounting seat 200 is provided with a mounting groove 210 extending in the first direction, and part of the groove bottom of the mounting groove 210 is formed as a through hole 200a in the second direction. The static cutter 300 is connected with the mounting seat 200 and is arranged to extend in the first direction. The static cutter 300 also covers the opening of the mounting groove 210. The static teeth 310 of the static cutter 300 are arranged to protrude out of the mounting groove 210 in the third direction. The moving cutter 10 is located between the mounting seat 200 and the static cutter 300. The moving teeth 12 are arranged to protrude out of the mounting groove 210 in the third direction. The elastic member is arranged in the mounting groove 210 and elastically supports the moving cutter 10, so that the moving cutter 10 always abuts against the static cutter 300. The static rail 400 is arranged between the moving cutter 10 and the static cutter 300 and extends in the first direction. The guide portion 21 of the moving cutter seat 20 is located between the moving cutter 10 and the static cutter 300 and cooperates with the static rail 400. The transmission portion 22 of the moving cutter seat 20 passes through the through hole 200a and cooperates with the driving structure of the electric shaver.

[0077] It is worth noting that the moving cutter 10 is stamped from the side adjacent to the guide portion 21 to the side of the moving cutter 10 opposite to the guide portion 21, forming an assembly groove 10b with an opening facing the static cutter 300. The moving cutter 10 is arranged to be fitted into the mounting groove 210 of the mounting seat 200. The portions of the moving cutter 10 located on both sides of the assembly groove 10b in the third direction protrude out of the opening of the mounting groove 210. The assembly groove 10b not only can accommodate the guide portion 21, but also can accommodate the static rail 400, so as to reduce the height of the entire cutter module 1000 in the second direction.

[0078] Further, the moving cutter 10 is also provided with two avoiding openings 10d, which are located on both sides of the accommodation hole 10a in the first direction, and extend through the moving cutter 10 in a direction away from the accommodation hole 10a, the static rail 400 comprises a guide beam 410 and two positioning feet 420, the guide beam 410 of the static rail 400 is welded to the surface of the static cutter 300 facing the moving cutter 10, the guide beam 410 is also located in the assembly groove 10b and matched with the guide groove 20a of the guide part 21, one end of the two positioning feet 420 is fixedly connected with both ends of the guide beam 410 in the first direction, and the other end of the two positioning feet 420 is matched with the groove bottom of the mounting groove 210 through the avoiding opening 10d on the corresponding side of the moving cutter 10.

[0079] Please refer to Figure 10 The elastic member is a biasing spring 500, which comprises a body 510 and two elastic supporting arms 520 arranged oppositely in the third direction, the body 510 is arranged in the mounting groove 210, the body 510 is arranged spaced apart from the moving cutter 10 in the second direction, the body 510 is provided with an avoiding hole 511 communicated with the through hole 200a, and the avoiding hole 511 is used for allowing the transmission part 22 to pass through, the two elastic supporting arms 520 extend from the groove bottom of the mounting groove 210 to the groove opening of the mounting groove 210 in the second direction, and the side ends of the two elastic supporting arms 520 away from the body 510 are elastically abutted with both sides of the moving cutter 10 in the third direction, so that the moving cutter 10 is always abutted with the static cutter 300.

[0080] Further, the groove bottom of the mounting groove 210 is provided with at least two assembly columns 220, which are located on both sides of the through hole 200a in the first direction, the body 510 is provided with at least two assembly holes 512, which are located on both sides of the accommodation hole 10a in the first direction, and the at least two assembly holes 512 are one-to-one correspondingly inserted and matched with the at least two assembly columns 220, so that the biasing spring 500 is fixed in the mounting groove 210, thereby avoiding the problem that the biasing spring 500 is displaced in the first direction relative to the mounting seat 200 when the moving cutter 10 slides relative to the biasing spring 500 in the first direction, that is, ensuring that the moving cutter 10 can slide smoothly and smoothly relative to the biasing spring 500.

[0081] The electric shaver also provides a kind of electric shaver, it includes driving mechanism and cutter head module 1000, driving mechanism is connected with the transmission part 22 of the moving cutter seat 20 in cutter head module 1000, to drive moving cutter 10 reciprocating motion, the specific structure of this cutter head module 1000 refers to the above embodiment, since electric shaver adopts all technical solutions of the above all embodiments, thus also have all beneficial effects brought by the technical solutions of the above embodiment, here will not be repeated.

[0082] Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing examples, those of ordinary skill in the art will understand that they can still modify the technical solutions described in the foregoing examples, or make equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A moving knife assembly, characterized by, The movable cutter assembly comprises a movable cutter and a movable cutter seat. The movable cutter has a trimming edge extending along a first direction, the trimming edge is provided with a plurality of movable teeth arranged in sequence along the first direction, the movable cutter is provided with a clearance hole penetrating along a second direction, the clearance hole is arranged in a third direction and spaced apart from the trimming edge, and the first direction, the second direction and the third direction are arranged perpendicular to each other in pairs. The movable cutter seat is mounted on the movable cutter and kept relatively fixed with the movable cutter in the first direction, the movable cutter seat comprises a guide part and a transmission part made of plastic, the guide part is located on one side of the movable cutter in the second direction to cooperate with the guide structure of the electric shaver, and the transmission part extends to the other side of the movable cutter in the second direction through the clearance hole to cooperate with the driving structure of the electric shaver.

2. The moving knife assembly of claim 1, wherein, The surface of the guide part facing the clearance hole is provided with an assembly boss, the assembly boss is insertedly matched with the clearance hole, the two side walls of the assembly boss in the first direction are respectively abutted with the two hole walls of the clearance hole in the first direction, the transmission part is connected with the surface of the assembly boss facing away from the guide part, and the transmission part is also gap matched with the clearance hole.

3. The moving knife assembly of claim 2, wherein, The clearance hole is arranged at the middle part of the movable cutter in the first direction, the clearance hole is arranged extending along the first direction, the assembly boss is arranged at the middle part of the guide part in the first direction, and the assembly boss is also arranged along the first direction.

4. The moving knife assembly of claim 2, wherein, The movable cutter is stamped from the side adjacent to the guide part to the side facing away from the guide part to form an assembly groove extending along the first direction, the clearance hole is arranged at the groove bottom of the assembly groove, and the guide part is assembled in the assembly groove.

5. The moving knife assembly of 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 also arranged on the two sides of the clearance hole in the first direction; the surface of the guide part facing the movable cutter is correspondingly provided with at least two positioning columns, the at least two positioning columns are insertedly matched with the at least two positioning holes one by one, and one end of the at least two positioning columns penetrating through the corresponding positioning hole is also fixedly connected with the movable cutter through hot melt welding.

6. The moving knife assembly of claim 5, wherein, Each positioning hole comprises a first matching section and a second matching section 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 located on the 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 insertedly matched with the corresponding positioning column, the second matching section of each positioning hole is gap matched with the corresponding positioning column, and the part of the positioning column located in the corresponding second matching section is hot melt welded.

7. The moving knife assembly of claim 1, wherein, The side of the guide part facing away from the movable cutter is provided with a guide groove extending along the first direction, the groove wall of the guide groove in the first direction is provided penetratingly, and the guide groove is used to cooperate with the guide structure of the electric shaver.

8. The moving knife assembly of claim 7, wherein, The guide groove has two guide walls oppositely arranged in the third direction, and at least two abutting protrusions are protruded on each of the guide walls, and each of the abutting protrusions on each of the guide walls has a convex arc surface facing the surface of the other guide wall.

9. The moving knife assembly of claim 8, wherein, Each of the abutting protrusions is arranged to extend from the groove bottom of the guide groove to the groove opening in the second direction, and each of the abutting protrusions is provided with a guide inclined surface at the end adjacent to the groove opening of the guide groove.

10. The moving knife assembly of claim 1, wherein, The movable cutter is further provided with two avoiding openings, which are arranged on both sides of the accommodation hole in the first direction and extend through the movable cutter in the direction away from the accommodation hole in the first direction.

11. The moving knife assembly of claim 10, wherein, The movable cutter is punched from the side adjacent to the guide portion to the side away from the guide portion to form an assembly groove extending in the first direction, and the accommodation hole and the two avoiding openings are arranged on the groove bottom of the assembly groove. The guide portion is assembled in the assembly groove, and the guide portion is provided with a guide groove on the side away from the movable cutter, the guide groove extends in the first direction, and the groove wall of the guide groove in the first direction is arranged to extend through, and the guide groove is used to cooperate with the guide structure of the electric shaver.

12. The moving knife assembly of any one of claims 1 to 11, wherein, Each of the movable teeth protrudes from the surface of the movable cutter adjacent to the guide portion in the second direction, and the middle part of each of the movable teeth is recessed to form an avoiding recess, each of the avoiding recesses is arranged to extend through adjacent to the side of the guide portion, and the bottom of each of the avoiding recesses is arranged flush with the surface of the movable cutter adjacent to the guide portion in the second direction.

13. A tool bit module, characterized by The cutter module comprises a mounting seat, an elastic member, a static cutter, a static rail and the movable cutter assembly according to any one of claims 1 to 12. The static cutter is arranged on one side of the mounting seat in the second direction, the movable cutter is arranged between the static cutter and the mounting seat, and the elastic member is arranged between the movable cutter and the mounting seat to elastically support the movable cutter. The static rail is arranged between the movable cutter and the static cutter, the guide portion is in sliding connection with the static rail, the mounting seat is arranged to extend through in the second direction, and the transmission portion passes through the through hole to cooperate with the driving structure of the electric shaver.

14. The tool bit module of claim 13, wherein, The mounting seat is recessed on the side adjacent to the static cutter to form a mounting groove, and the through hole is arranged on the groove bottom of the mounting groove; the elastic member is a biasing spring, which comprises a body and elastic support arms oppositely arranged in the third direction, the body is arranged on the groove bottom of the mounting groove and is spaced apart from the movable cutter, the body is arranged to extend through the avoiding hole in communication with the through hole, the avoiding hole is used for the transmission portion to pass through, and the two elastic support arms extend from the groove bottom of the mounting groove to the groove opening in the second direction, and the side ends of the two elastic support arms away from the body are in elastic abutment with the two sides of the movable cutter in the third direction.

15. An electric shaver, characterized in that The cutter module comprises a mounting seat, an elastic member, a static cutter, a static rail and the movable cutter assembly according to any one of claims 1 to 12. The static cutter is arranged on one side of the mounting seat in the second direction, the movable cutter is arranged between the static cutter and the mounting seat, and the elastic member is arranged between the movable cutter and the mounting seat to elastically support the movable cutter. The static rail is arranged between the movable cutter and the static cutter, the guide portion is in sliding connection with the static rail, the mounting seat is arranged to extend through in the second direction, and the transmission portion passes through the through hole to cooperate with the driving structure of the electric shaver. The mounting seat is recessed on the side adjacent to the static cutter to form a mounting groove, and the through hole is arranged on the groove bottom of the mounting groove; the elastic member is a biasing spring, which comprises a body and elastic support arms oppositely arranged in the third direction, the body is arranged on the groove bottom of the mounting groove and is spaced apart from the movable cutter, the body is arranged to extend through the avoiding hole in communication with the through hole, the avoiding hole is used for the transmission portion to pass through, and the two elastic support arms extend from the groove bottom of the mounting groove to the groove opening in the second direction, and the side ends of the two elastic support arms away from the body are in elastic abutment with the two sides of the movable cutter in the third direction. The cutter module comprises a mounting seat, an elastic member, a static cutter, a static rail and the movable cutter assembly according to any one of claims 1 to 12.

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