CN210173632U

CN210173632U - Blade group provided with annular closed static knife and knife head structure thereof

Info

Publication number: CN210173632U
Application number: CN201921020690.1U
Authority: CN
Inventors: Jian Chen; 陈坚
Original assignee: Yuanhai Medical Technology Co ltd
Current assignee: Yuanhai Medical Technology Co ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-03-24
Anticipated expiration: 2029-07-02

Abstract

The utility model provides a be provided with blade group and tool bit structure of annular closed quiet sword, including annular closed quiet sword, with the quiet sword relative reciprocating motion's of annular closed sword move the sword, annular closed quiet sword is around forming hollow closed ring, it inserts closed intra-annular to move the sword, annular closed quiet sword has the relative first connecting wall and the second connecting wall that sets up, moves sword and annular closed quiet sword and is clearance fit between first connecting wall and second connecting wall, and quiet sword has at least one and connects the shearing edge of wall and second connecting wall, it forms quiet sword tooth to cut the edge, move the sword and cut the corresponding position of edge and form and quiet sword tooth complex and move sword tooth. Blade group for traditional blade subassembly, structural design is simpler, assembly process simplifies more, manufacturing cost is lower.

Description

Blade group provided with annular closed static knife and knife head structure thereof

Technical Field

The utility model relates to a hair cutting device, in particular to a shaver head and a blade group thereof.

Background

A blade set, a hair cutting appliance and an associated method of manufacture are disclosed in the patent application No. 201510185524.7. In particular, the blade set comprises a stationary blade and a movable blade, wherein the movable blade can be driven in a reciprocating manner with respect to the stationary blade for cutting hair. The fixed blade comprises an upper fixed blade and a lower fixed blade, a slot is formed between the two fixed blades, and the movable blade is inserted into the slot and driven by a driving mechanism to reciprocate along the slot to form shearing with the fixed blade. In order to cut shorter hair to achieve a better cutting effect, a supporting structure (a fixed blade seat) matched with a fixed blade needs to be arranged to increase the strength of the fixed blade, so that the phenomenon that the moving blade shakes or jumps when the moving blade is used due to the fact that the fixed blade bends and deforms in the direction perpendicular to the moving direction of the moving blade is avoided. In contrast, the fixed blade is formed in an unclosed sheet structure, and the support structure is used for sealing the opening of the sheet structure and enhancing the strength of the fixed blade. Thus arranged, a mounting space is formed between the fixed blade and the supporting structure, and the movable blade is arranged in the mounting space in a reciprocating manner. Due to the high precision required by the razor in cutting, the requirements on the fit of the various elements in the razor blade set are high, and even if the precision required is a few tenths of a millimeter worse, the hair may not be cut and may be pulled or jump. The die opening cost and the difficulty of the manufacturing process are multiplied for each added element.

Therefore, how to solve the problems of strength, shearing effect and manufacturing process of the shaver at the same time is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to solve the technical problem how to solve the problem between the intensity, the shearing effect, the manufacturing process of razor simultaneously, for this reason, the utility model provides a be provided with the blade group of the closed quiet sword of annular and tool bit structure thereof.

In order to achieve the above object, the utility model provides a following technical scheme:

a blade set provided with an annular closed static knife comprises the annular closed static knife and a movable knife which moves in a reciprocating manner relative to the annular closed static knife, wherein the annular closed static knife surrounds to form a hollow closed ring, and the movable knife is inserted into the closed ring; the annular closed static knife is provided with a first connecting wall and a second connecting wall which are oppositely arranged, the movable knife is in clearance fit with the annular closed static knife between the first connecting wall and the second connecting wall, the annular closed static knife is provided with at least one shearing edge which is connected with the first connecting wall and the second connecting wall, the shearing edge forms static knife teeth, and the movable knife is in corresponding position with the shearing edge to form movable knife teeth matched with the static knife teeth.

The utility model discloses in one of them embodiment, first connecting wall or second connecting wall set up the guide move sword reciprocating motion's guide structure, move the sword with the position that guide structure corresponds sets up complex limit structure with it.

In one embodiment of the present invention, the guiding structure is a guiding groove or a guiding rail, and the limiting structure is a guiding rail or a guiding groove matched with the guiding structure.

The utility model discloses in one of them embodiment, first connecting wall or the second connecting wall is seted up the mesh and is formed quiet sword mesh sword, move the sword set up with quiet sword mesh sword complex moves sword mesh sword, quiet sword mesh sword with move sword mesh sword cooperation and form plane shearing portion.

In one embodiment of the present invention, the blade set is used with the first connecting wall of the annular closed stationary knife facing the skin, and the wall thickness of the first connecting wall is between 0.02mm to 0.5 mm.

In one embodiment of the present invention, the wall thickness of the first connecting wall is smaller than the wall thickness of the second connecting wall.

In one embodiment of the utility model, the movable knife and the annular closed stationary knife are in the gap between the first connecting wall and the second connecting wall is less than or equal to 0.03 mm.

The utility model discloses in one of them embodiment, adjacent two form static sword cut mouth between the quiet sword tooth, static sword cut mouth is expanded outward towards quiet sword tooth end by quiet sword tooth root.

In one embodiment of the present invention, the first connecting wall is in arc transition to the end of the stationary blade teeth, and the second connecting wall is in arc transition to the end of the stationary blade teeth.

The utility model discloses in one of them embodiment, quiet sword tooth has a plurality of lateral surfaces and connects the terminal surface of each lateral surface, the smooth transitional coupling of equal arc between the adjacent lateral surface of quiet sword tooth, between each lateral surface and the terminal surface.

The utility model also discloses a tool bit structure, including above-mentioned arbitrary blade group, interlock move the adapting unit of sword motion.

In one embodiment of the present invention, the first connecting wall extends through the elongated connecting hole, and the connecting member includes a connecting seat extending into the connecting hole and reciprocating along the connecting hole.

It can be seen from the above technical solution that, the blade assembly of the present invention is provided with the stationary knife that is closed in an annular shape, and under the condition that the stationary knife has the same thickness, the strength of the whole body is stronger than that of the stationary knife designed with an opening due to the annular closing force formed by the stationary knife, and the strength of the stationary knife is increased without providing an additional stationary knife supporting member, that is, compared with the conventional blade assembly, the blade assembly provided by the present invention has the advantages of simpler structural design, more simplified assembly process, and lower manufacturing cost; the movable knife and the annular closed stationary knife are in clearance fit between the first connecting wall and the second connecting wall, so that the contact area between the movable knife and the stationary knife is reduced when the shaver is used, further the friction between the movable knife and the stationary knife is reduced, the temperature rise of the shaver in the working process is low, the current is small, and the service life is longer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic perspective view of a razor head according to an embodiment of the present invention;

FIG. 2 is a schematic view of another perspective view of a razor head according to an embodiment of the present invention;

FIG. 3 is a schematic top view of a razor head according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view at B in FIG. 3;

FIG. 6 is an enlarged view at C of FIG. 1;

in the figure, 1 is a blade group, 2 is a connecting component, 3 is an annular closed static knife, 4 is a moving knife, 5 is a guide structure, and 6 is a limit structure;

21 is a connecting seat, 22 is a connecting head, 30 is a closed ring, 31 is a first connecting wall, 32 is a second connecting wall, 33 is a shearing edge, 34 is a static cutter tooth, 36 is a shearing opening, and 41 is a movable cutter tooth;

341 is the root of the static cutter tooth, 342 is the end of the static cutter tooth, 343 is the outer side face and 344 is the end face.

Detailed Description

The core of the utility model is to provide a blade group and tool bit structure that are provided with closed quiet sword of annular to solve the problem between intensity, the shearing effect, the manufacturing process of razor simultaneously.

The embodiments described below do not limit the scope of the invention described in the claims. Further, the entire contents of the configurations shown in the following embodiments are not limited to those necessary as a solution of the invention described in the claims.

Referring to fig. 1 to 6, a blade set 1 disclosed in the embodiment of the present invention includes an annular closed stationary blade 3, a movable blade 4 reciprocating relatively to the annular closed stationary blade 3, the annular closed stationary blade 3 surrounds a hollow closed ring 30, the movable blade 4 is inserted into the closed ring 30, the annular closed stationary blade 3 has a first connecting wall 31 and a second connecting wall 32 which are arranged relatively, the movable blade 4 and the annular closed stationary blade 3 are in clearance fit between the first connecting wall 31 and the second connecting wall 32, preferably, the clearance between the movable blade 4 and the annular closed stationary blade 3 between the first connecting wall 31 and the second connecting wall 32 is less than or equal to 0.03 mm. The illustration provided in this embodiment is for illustration, and the first connecting wall 31 is located at the lower side, and the second connecting wall 32 is located at the upper side. The fixed blade 4 has at least one cutting edge 33 connecting the first connecting wall 31 and the second connecting wall 32, the cutting edge 33 forms a fixed blade tooth 34, and the movable blade 4 forms a movable blade tooth 41 matched with the fixed blade tooth 34 at a position corresponding to the cutting edge 33.

The annular closed static knife 3 can be integrally formed, and the material of the annular closed static knife 3 can be alloy or metal; or the static knife is also formed into a closed ring by a secondary injection molding mode, and the static knife can be formed by compounding plastic and alloy or metal. The movable blade 4 can be made of metal or alloy.

Furthermore, in order to achieve a better shearing effect and reduce the shaking and jumping phenomena of the moving blade of the shaver during the working process, the first connecting wall 31 or the second connecting wall 32 is provided with a guiding structure 5 for guiding the moving blade 4 to move back and forth, and the moving blade 4 is provided with a limiting structure 6 matched with the guiding structure 5 at a position corresponding to the guiding structure 5. The guide structure 5 is a guide groove or a guide rail, and the limit structure 6 is a guide rail or a guide groove matched with the guide structure 5. In the present embodiment, the guide structure 5 is formed at the second connection wall 32.

Furthermore, the first connecting wall 31 or the second connecting wall 32 is provided with meshes to form a static knife mesh knife. The movable knife 4 is provided with a movable knife mesh knife matched with the static knife mesh knife. The static knife mesh knife and the movable knife mesh knife are matched to form a plane shearing part. In the provided drawings, the static-blade mesh blade is formed at the second connecting wall 32, and thus its structure is not shown in the drawings.

In specific implementation, in order to ensure the strength of the stationary blade and achieve a better shearing effect, the wall thickness of the first connecting wall 31 may be designed to be smaller than that of the second connecting wall 32. Or the local thickening treatment of the annular closed static knife 3 is carried out, and the contact surface of the annular closed static knife 3 and the skin is thinned. The first connecting wall 31 of the blade set, which annularly closes the static blade 3 when in use, faces the skin, and the wall thickness of the first connecting wall 31 is between 0.02mm and 0.5 mm. For better cutting and shaving effect, the wall thickness of the first connecting wall 31 may be set between 0.02mm and 0.04 mm. Compared with the traditional razor blade, the design of the annular closed static knife 3 of the utility model can make the thickness of the first connecting wall 31 thinner, and can also achieve the strength required during shaving operation.

In use, it is generally necessary to cut and modify shorter hair sizes to achieve a more perfect shaving result, which requires that the surface of the stationary blade that contacts the skin be sufficiently thin, as is well known to those skilled in the art. The utility model discloses set up quiet sword as integrative closed ring for the bulk strength of annular closed quiet sword 3 increases, it is open-ended structural design for quiet sword among the prior art, the whole intensity of annular closed quiet sword 3 is stronger, can make the thickness of one side of annular closed quiet sword 3 with skin contact thinner, and utilize the annular closing force that quiet sword itself formed, each point of annular closed quiet sword 3 all receives the holding power of perpendicular to the face that this point is located, and the design of current open type quiet sword, if design the quiet sword too thin, just can not guarantee its intensity that cooperates with moving the sword with the method; to overcome this drawback, a corresponding fixed blade supporting structure is required to increase the strength of the fixed blade, and such an increase in components would increase the number of components, the assembly difficulty, the process steps and the cost of the shaver. And the utility model discloses set up the closed quiet sword of annular, under the condition of the same thickness of quiet sword, its annular closing force that forms makes its holistic intensity stronger for the quiet sword of opening design, that is to say, the utility model provides a blade subassembly, it is simpler for traditional blade subassembly, structural design, assembly process simplify more, manufacturing cost is lower. The movable cutter 4 is intermittently matched with the static cutter, and the gap is controlled to be less than or equal to 0.03mm, so that the vibration amplitude of the movable cutter in shaving operation is effectively avoided, the phenomenon of cutter jumping is prevented, meanwhile, the temperature rise can be reduced, the friction is small, the abrasion of the blade component is small after long-term use, and the service life is longer.

Preferably, as shown in fig. 5, a static blade cutting opening 36 is formed between two adjacent static blade teeth 34, and the static blade cutting opening 36 is flared from the static blade tooth root 341 toward the static blade tooth tip 342. The cutting opening 36 of the static cutter is in a V shape or a U shape with an outward opening. The disclosure of the present embodiment is not intended to be limiting. After the static cutter teeth 34 are arranged in this way, hairs can enter the static cutter cutting opening 36 more conveniently to be cut, and the phenomenon of tooth clamping is not easy to occur.

As shown in fig. 5 and 6, the stationary blade tooth 34 has a plurality of outer side faces 343 and end faces 344 connecting the outer side faces 343, and the adjacent outer side faces 343 of the stationary blade tooth 34 are connected in an arc-shaped smooth transition manner, and between the outer side faces 343 and the end faces 344. By the design, the overall skin-close touch feeling can be improved during shaving, and skin cutting caused by improper operation can be avoided. That is, the smooth transition of the surface of the static cutter teeth 34 contacting with the skin of the human body is rounded. Therefore, the stationary blade teeth 34 can also be designed as shown in fig. 6 of the present embodiment: the first connecting wall 31 is in arc transition to the end 342 of the fixed blade tooth 34, and the second connecting wall 32 is in arc transition to the end 342 of the fixed blade tooth.

The utility model also discloses a razor tool bit that has this blade group, including blade group 1 and adapting unit 2 of any one of the above-mentioned, wherein, adapting unit 2 is connected with a driving source, and the driving source can be the motor (not shown in the utility model provides an in the drawing). The connecting part 2 is used for driving the movable knife 4 to reciprocate in the closed ring 31.

Specifically, the connecting member 2 includes a connecting seat 21 and a connecting head 22. The connector 22 and the connecting seat may be detachably connected (e.g. in the form of a fastener, a snap, or a plug with a tight fit), or may be integrally formed (e.g. welded, injection molded, cast molded, etc.). The connectors 22 are connected with the power output end of the driving source, and the connecting seat 21 is connected with the movable knife 4. The connecting seat 21 and the movable blade 4 can be made into an integral structure, and at this time, in order to facilitate the support of the connecting seat 21 and the movable blade 4, a through hole needs to be formed in the second connecting wall 32. Of course, the movable blade 4 and the annular closed stationary blade 3 can be assembled first and then connected in a welding manner, in addition, a connecting hole can be optionally formed in the movable blade 4, and the bottom of the connecting seat 21 extends into the connecting hole to link the movable blade 4.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A blade set provided with an annular closed static knife is characterized by comprising an annular closed static knife and a movable knife which reciprocates relative to the annular closed static knife, wherein the annular closed static knife surrounds to form a hollow closed ring, and the movable knife is inserted into the closed ring; the annular closed static knife is provided with a first connecting wall and a second connecting wall which are oppositely arranged, the movable knife is in clearance fit with the annular closed static knife between the first connecting wall and the second connecting wall, the annular closed static knife is provided with at least one shearing edge which is connected with the first connecting wall and the second connecting wall, the shearing edge forms static knife teeth, and the movable knife is in corresponding position with the shearing edge to form movable knife teeth matched with the static knife teeth.

2. The blade set provided with the annular closed stationary knife according to claim 1, wherein the first connecting wall or the second connecting wall is provided with a guide structure for guiding the movable knife to move back and forth, and the movable knife is provided with a limit structure matched with the guide structure at a position corresponding to the guide structure.

3. The blade set provided with the annular closed stationary knife according to claim 2, wherein the guiding structure is a guide groove or a guide rail, and the limiting structure is a guide rail or a guide groove engaged with the guiding structure.

4. The blade group provided with the annular closed stationary knife according to claim 1, wherein the first connecting wall or the second connecting wall is provided with meshes to form a stationary knife mesh knife, the movable knife is provided with a movable knife mesh knife matched with the stationary knife mesh knife, and the stationary knife mesh knife and the movable knife mesh knife are matched to form a plane shearing portion.

5. The blade set provided with the annular closed static blade as claimed in claim 1, wherein the first connecting wall of the annular closed static blade faces the skin when the blade set is used, and the wall thickness of the first connecting wall is 0.02-0.5 mm.

6. The blade set provided with the annular closed stationary knife according to claim 5, characterized in that the wall thickness of the first connecting wall is smaller than the wall thickness of the second connecting wall.

7. The blade set provided with the annular closed static blade as claimed in claim 1, wherein the clearance between the movable blade and the annular closed static blade between the first connecting wall and the second connecting wall is less than or equal to 0.03 mm.

8. The blade group provided with the annular closed static blade as claimed in any one of claims 1 to 7, wherein a static blade shearing opening is formed between two adjacent static blade teeth, and the static blade shearing opening is flared from the root parts of the static blade teeth to the tail ends of the static blade teeth.

9. The blade group provided with the annular closed static blade as claimed in any one of claims 1 to 7, wherein the first connecting wall is in arc transition to the end of the static blade tooth, and the second connecting wall is in arc transition to the end of the static blade tooth.

10. The blade group provided with the annular closed static blade as claimed in any one of claims 1 to 7, wherein the static blade teeth are provided with a plurality of outer side faces and end faces connecting the outer side faces, and arc-shaped smooth transition connection is formed between the adjacent outer side faces of the static blade teeth and between each outer side face and the end face.

11. A cutter head structure, comprising a blade set according to any one of claims 1 to 9 and a connecting member for moving the movable blade.

12. The cutter head structure of claim 11 wherein said first connecting wall extends through an elongated connecting bore and said connecting member comprises a connecting base extending into said connecting bore and reciprocally movable along the connecting bore.