CN216372303U

CN216372303U - Rotary shaver, rotary shaver head and movable knife thereof

Info

Publication number: CN216372303U
Application number: CN202122438748.8U
Authority: CN
Inventors: 王志盛
Original assignee: Ningbo Yingcheng Electronic Technology Co ltd
Current assignee: Ningbo Yingcheng Electronic Technology Co ltd
Priority date: 2021-10-09
Filing date: 2021-10-09
Publication date: 2022-04-26
Anticipated expiration: 2031-10-09

Abstract

The application discloses rotation type razor and rotation type razor tool bit and move the sword, rotation type razor move the sword be used for cooperating with the sword net, move the orientation of sword one side of sword net is provided with the axle bush, the inner wall of axle bush is including being used for a plurality of curved location regions that set up with the location axle clearance fit's of sword net interval. The movable knife can reduce the contact area between the bearing bush and the positioning shaft, so that the movable knife can conveniently circulate lubricating oil during operation, and further, the friction force between the connecting piece and the positioning shaft during rotation is reduced.

Description

Rotary shaver, rotary shaver head and movable knife thereof

Technical Field

The application relates to the technical field of shavers, in particular to a rotary shaver, a rotary shaver head and a movable knife of the rotary shaver head.

Background

The shavers on the market are divided into manual shavers and electric shavers, the electric shavers are divided into reciprocating shavers and rotating shavers, and the shaving heads of the electric rotating shavers are divided into single rings, double rings and multiple rings according to the mesh surface structure of the shaver net, wherein the single ring shaving heads, the double ring shaving heads and the three ring shaving heads are the most common ones.

The cutter mesh of the existing shaver is matched with the movable cutter, when the movable cutter runs, the friction force between the positioning shaft of the cutter mesh and the positioning hole of the movable cutter is large, the energy consumption is high, and the service time is short after one-time charging.

Disclosure of Invention

The utility model aims at providing a rotation type razor and rotation type razor tool bit and move sword, it is big to have overcome the location axle of current sword net and the frictional force that moves between the locating hole of sword, problem that the energy consumption is high.

In order to achieve the purpose, the following technical scheme is adopted in the application:

the utility model provides a rotation type razor move sword for with the cooperation of sword net, move the orientation of sword one side of sword net is provided with the axle bush, the inner wall of axle bush is including being used for with a plurality of curved location regions of the location axle clearance fit interval setting of sword net.

In some optional embodiments, the arc degree of the arc-shaped positioning area of the bearing bush is 30-60 degrees, the radius of the arc-shaped positioning areas of the bearing bush is the same, and the arc-shaped positioning areas are coaxial so that the movable knife runs under the matching of the bearing bush and the positioning shaft.

In some optional embodiments, a plurality of arc-shaped positioning areas of the bearing bush are arranged at equal intervals along the inner wall of the bearing bush, and a concave non-positioning area is arranged between two adjacent arc-shaped positioning areas of the bearing bush.

In some optional embodiments, the movable cutter comprises a cutter body, a cutter foot and a cutter frame, the cutter body is provided with a cutting edge, the cutter body is arranged on the cutter foot, the cutter foot is arranged on the cutter frame, and a plane defined by a central line of the length direction of the cutter foot and the center of the bottom surface of the cutter frame is perpendicular to the bottom surface of the cutter frame.

In some optional embodiments, the movable knife includes a knife body, a knife foot and a knife rest, a first cutting edge for forward shearing and a second cutting edge for reverse shearing are formed at the joint of the side surface and the top surface of the knife body, the top surface of the knife body is an acute angle isosceles triangle or an isosceles trapezoid, the top angle of the isosceles triangle or the upper base of the isosceles trapezoid faces away from the center of the knife rest, the first cutting edge and the second cutting edge respectively correspond to two waists of the isosceles triangle or the isosceles trapezoid, the knife body is arranged on the knife foot, and the knife foot is arranged on the knife rest.

In some optional embodiments, the knife rest is provided with a plurality of knife legs distributed in two annular areas corresponding to the knife net, and the included angle between the extending direction of the first knife edge towards the center of the knife rest and the extending direction of the second knife edge towards the center of the knife rest is 20-40 degrees.

In some optional embodiments, the first cutting edge forms a shear angle of 10-20 degrees with the cutting edge of the mesh teeth, and/or the second cutting edge forms a shear angle of 10-20 degrees with the cutting edge of the mesh teeth, and/or the top surface of the blade body forms a non-right angle with the perpendicular bisector of the blade foot, and the height of the top surface of the blade body increases in a direction away from the center of the blade holder.

In some alternative embodiments, the side of the body forming the first and/or second cutting edge is formed with a shear rake angle of less than 90 degrees from the top surface of the body.

The utility model provides a rotation type razor tool bit, rotation type razor tool bit is including moving sword and sword net, the sword net is provided with the location axle towards one side of moving the sword, move the sword as above move the sword.

A rotary shaver comprising a moving blade as described above.

Compared with the prior art, the beneficial effects of this application include at least:

the utility model provides a rotation type razor and rotation type razor tool bit and move the sword, the inner wall setting through the axle bush that moves the sword is used for a plurality of curved location regions that set up with location axle clearance fit's interval, can reduce the area of contact of axle bush and location axle, the circulation of the lubricating oil when being convenient for move the sword operation, and then reduce the connecting piece rotatory and the frictional force between the location axle, partial noise when having also eliminated the operation, user's use experience has been improved.

Drawings

The present application is further described below with reference to the drawings and examples.

FIG. 1 is an exploded view of a rotary shaver head according to an embodiment of the present application;

FIG. 2 is a schematic view of a movable blade of a rotary shaver head according to an embodiment of the present application;

FIG. 3 is a schematic view of a bearing bush of a movable knife and a positioning shaft according to an embodiment of the present disclosure;

FIG. 4 is a schematic view of a rotary shaver head showing a shear angle in accordance with an embodiment of the present application;

FIG. 5 is a schematic view of a moving blade portion of an embodiment of the present application showing a shear rake angle;

FIG. 6 is a schematic top view of a movable blade of yet another rotary shaver head of an embodiment of the present application;

FIG. 7 is a schematic view of a knife net with a planar net surface according to an embodiment of the present application;

FIG. 8 is a schematic view of a knife net with a planar net surface according to an embodiment of the present application;

fig. 9 is a schematic structural view of a movable blade of a rotary shaver head according to an embodiment of the present application.

The figure is as follows: 1. a knife net; 11. a screen surface; 2. moving a knife; 21. a cutter body; 22. a knife leg; 23. a tool holder; 24. a connecting member; 211. a blade; 212. a first blade; 213. a second blade; 231. a beard leakage groove; 4. a rotating shaft; 5. bearing bushes; 51. a positioning area; 6. positioning the shaft; alpha, arc angle radian; beta, shear angle; gamma, shear rake angle; delta, blade included angle.

Detailed Description

The present application is further described with reference to the accompanying drawings and the detailed description, and it should be noted that, in the present application, the embodiments or technical features described below may be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1 to 9, the embodiment of the present application provides a rotary shaver head, which includes a mesh 1 and a moving blade 2 that are matched, a positioning shaft 6 is disposed on one side of the mesh 1 facing the moving blade 2, and the moving blade 2 may be used to be mounted on the rotary shaver.

The knife net 1 of the embodiment has two annular beard feeding areas, namely an inner ring and an outer ring, the movable knife 2 includes a knife body 21, a knife foot 22 and a knife rest 23, the knife body 21 is provided with a knife edge 211, the knife body 21 is arranged on the knife foot 22, the knife foot 22 is arranged on the knife rest 23, a plane defined by a center line of the knife foot 22 in the length direction and a center of a bottom surface of the knife rest 23 is perpendicular to the bottom surface of the knife rest 23, and the perpendicular may be shown if an included angle theta in fig. 2 is 90 degrees, or may be in a range of 85-95 degrees.

Wherein, cutter body 21, sword foot 22 and knife rest 23 adopt the rigidity material, preferably can adopt ceramic materials such as high-purity superfine zirconia, when cutter body 21, sword foot 22 and knife rest 23 adopt ceramic materials, cutter body 21, sword foot 22 and knife rest 23 have high rigidity, high density, high temperature resistant, magnetization resistance, anti-oxidant, high wear resistance, acid and alkali corrosion resistance, do not rust, advantages such as easy washing, avoid on the one hand the later stage to sharpen maintenance such as sword, on the one hand the difficult sticky hair that downcuts of cutter body 21 in the use, can not influence shaving efficiency.

In use, hairs contact the blade edge 211, and the blade edge 211 is pressed by the hairs and acts on the blade leg 22 and the blade body 21. Referring to the mechanical analysis, the plane defined by the center line of the length direction of the cutter foot 22 and the center of the bottom surface of the cutter holder 23 is perpendicular to the bottom surface of the cutter holder 23, so that the strength of the cutter foot 22 can be improved, and the cutter foot 22 cannot be easily deformed. Therefore, the arrangement can avoid the rebound deformation caused by insufficient strength of the cutter foot 22, and further provides the rotary shaver cutter head with better stability in use.

Referring to fig. 2, in some alternative embodiments, the knife body 21, the knife leg 22 and the knife rest 23 are preferably made of ceramic, the movable knife 2 may further include a connecting member 24, the connecting member 24 is made of plastic material, preferably plastic material, and is provided with a mating surface for detachably driving and connecting with the rotating shaft 4 of the driving mechanism (not shown), the rotating shaft 4 drives the movable knife 2 to rotate through the connecting member 24, and the knife rest 23 is fixedly connected with the connecting member 24.

Superior food

Referring to fig. 1 to 3 and 9, in some alternative embodiments, a positioning shaft 6 is disposed on a side of the knife net 1 facing the movable knife 2, a bearing bush 5 is disposed on a side of the movable knife 2 facing the knife net 1, and an inner wall of the bearing bush 5 includes a plurality of arc-shaped positioning regions 51 disposed at intervals for clearance-fitting with the positioning shaft 6.

The positioning shaft 6 can position the connecting piece 24 through the bearing bush 5, and the coaxiality of the positioning shaft 6 and the connecting piece 24 is ensured, so that the connecting piece 24 cannot deviate during the driving rotation of the driving mechanism, and the stability of the movable knife 2 during use is improved. If the location axle 6 of sword net 1 and the locating hole that moves sword 2 are the cooperation of cylinder and round hole, not only frictional force is big, and the noise is big, this embodiment sets the structure to including a plurality of curved location area 51 through the axle bush 5 that will move sword 2, can reduce the area of contact of axle bush 5 and location axle 6, be convenient for move the circulation of sword 2 during operation lubricating oil, and then reduce the connecting piece 24 frictional force when rotatory and between the location axle 6, partial noise when also having eliminated the operation, user's use experience has been improved, non-location area between two curved location areas can be used for storing lubricating oil or supplying lubricating oil to pass through, improve lubricated effect, the increase of service life.

In a specific embodiment, the angular arc α of the arc-shaped positioning region 51 of the bearing bush 5 is 30 to 60 degrees, the radii of the arc-shaped positioning regions 51 of the bearing bush 5 are substantially the same, for example, the radius difference between the two arc-shaped positioning regions 51 is within 2mm, preferably within 1mm, and more preferably within 0.5mm, the arc-shaped positioning regions 51 are substantially coaxial, so that the movable blade 2 runs under the matching between the bearing bush 5 and the positioning shaft 6, the substantially coaxial means that the axes of the two arc-shaped positioning regions 51 are within 2mm, preferably within 1mm, and more preferably within 0.5mm, and the bearing bush 5 and the positioning shaft 6 of the above-mentioned structure are matched, so that not only positioning is accurate, but also a better balance between positioning accuracy and friction reduction can be obtained.

In a specific embodiment, the plurality of arc-shaped positioning areas 51 of the bearing bush 5 are arranged at equal intervals along the inner wall of the bearing bush 5, and the concave non-positioning area 51 is arranged between two adjacent arc-shaped positioning areas 51 of the bearing bush 5, so that the bearing bush 5 with the above structure can reduce the processing difficulty, and is accurate in positioning and low in noise.

In a specific embodiment, a first cutting edge 212 and a second cutting edge 213 for forward cutting and reverse cutting are formed at the joint of the side surface and the top surface of the cutter body 21, the top surface of the cutter body 21 is an acute-angle isosceles triangle or an isosceles trapezoid, the top angle of the isosceles triangle or the upper bottom of the isosceles trapezoid faces away from the center of the cutter holder 23, the first cutting edge 212 and the second cutting edge 13 respectively correspond to two waists of the isosceles triangle or the isosceles trapezoid, and when the cutting edge 211 of the movable cutter 2 is designed into the double-cutting-edge 211 structure with the above structure, the design that the cutting edges 211 are arranged on both sides of the cutter foot 22 can meet the requirement that the movable cutter 2 can perform the shaving function by rotating clockwise and counterclockwise, so that various hairs can be thoroughly shaved.

Cutter body 21, sword foot 22 and knife rest 23 are the ceramic material, move sword 2 and can be including being used for the connecting piece 24 of being connected with actuating mechanism's rotation axis 4, connecting piece 24 is the plastic material, the orientation of connecting piece 24 one side of cutter mesh 1 is provided with axle bush 5, sets up the through-hole that runs through two sides about on the knife rest 23, the partly fixed holding of connecting piece 24 is in the through-hole of knife rest 23, axle bush 5 sets up on the connecting piece 24, because connecting piece 24 is the plastic material, set up axle bush 5 on the connecting piece 24, can make full use of the good characteristics of plastic material processing property, reduce the processing degree of difficulty, simultaneously, the plastic material is when connecting piece 24 is in coordination with location axle 6, and the difficult problem such as crack that produces in axle bush 5 department can increase of service life.

Referring to fig. 6, in some alternative embodiments, the cutter frame 23 is provided with a plurality of cutter feet 22 distributed in two annular areas corresponding to the cutter mesh 1, the cutter body 21 is provided with a first cutter edge 212 for forward cutting and a second cutter edge 213 for reverse cutting, and an angle between an extension direction of the first cutter edge 212 towards the center of the cutter frame 23 and an extension direction of the second cutter edge 213 towards the center of the cutter frame 23 is 20-40 degrees.

The cutting edge 211 of the prior shaver head has a single-edge structure, so that the shaver head can only rotate in one direction, which brings inconvenience to users. When the blade 211 of the movable blade 2 is designed to be a double-blade 211 structure, the blade 211 on both sides of the blade foot 22 can satisfy the requirement that the movable blade 2 can rotate clockwise and counterclockwise to achieve the shaving function. The user can select the clockwise rotation and the anticlockwise rotation of the movable blade 2 according to actual needs so as to thoroughly shave various hairs. Referring to the mechanical analysis, when the included angle between the extending direction of the first blade 212 and the extending direction of the second blade 213 towards the center of the blade holder 23, that is, the included angle δ is too large, the blade 211 is prone to fail to cut the hair completely, and the user may feel a pulling feeling; too small a blade angle δ easily results in the blade edge 211 cutting hair less strongly and the blade edge 211 being easily damaged. Through a plurality of research tests, when the included angle delta of the blade is 20-40 degrees, the service life of the blade 211 is ensured on the premise of better sharpness.

Referring to fig. 4, in some alternative embodiments, the first cutting edge 212 forms a 10-20 degree shearing angle β with the cutting edge of the mesh of the knife net 1, and/or the second cutting edge 213 forms a 10-20 degree shearing angle β with the cutting edge of the mesh of the knife net 1, and/or the top surface of the knife body 21 forms a non-right angle with the perpendicular bisector of the knife foot 22, and the height of the top surface of the knife body 21 increases in a direction away from the center of the knife rest 23. When the shearing angle beta is too large, hairs entering the net teeth of the knife net 1 are not easy to be bound, and the hairs can escape from the contacted knife edge 211; when the angle of the cutting angle beta is too small, hairs are not easy to enter from the mesh teeth of the cutter mesh 1 and contact the cutting edge 211, and the shaving efficiency is low. Through a plurality of research tests, when the shearing angle beta between the first cutting edge 212 and the cutting edge of the mesh teeth of the knife net 1 is 10-20 degrees, and the shearing angle beta between the second cutting edge 213 and the cutting edge of the mesh teeth of the knife net 1 is 10-20 degrees, the shaving efficiency can be ensured, and hairs cannot escape from the contacted cutting edge. Since the skin is of a flexible structure and is not a smooth plane, the ends of the first and

second blades

212 and 213 facing away from the center of the blade holder 23 can also shave beards by designing the height of the top surface of the blade body 21 to be gradually increased in the direction facing away from the center of the blade holder 23.

When the razor is used, for example, shaving in the chin position, the chin can apply pressure to the knife net 1 towards the movable knife 2, and when the shearing front angle gamma is too large, the knife edge 211 is easy to rub the knife net 1, so that great safety hazard exists. Referring to fig. 5, in some alternative embodiments, the side of the cutter body 21 forming the first blade edge 212 and/or the second blade edge 213 and the top surface of the cutter body 21 are formed with a shear rake angle γ of less than 90 degrees. When shearing anterior angle gamma is less than 90 degrees, cutting edge 211 is difficult to rub sword net 1, and big-end-up's structure is difficult to card beard in cutter body 21 size, effectively improves user experience.

Referring to fig. 2 and 6, in some alternative embodiments, a plurality of cutter bodies 21 may be disposed on the cutter holder 23, the cutter bodies 21 are arranged in an inner ring and an outer ring, each cutter body 21 is disposed on the cutter holder 23 through one cutter foot 22, a plurality of beard leakage grooves 231 are disposed on the cutter holder 23, and one beard leakage groove 231 is disposed at each cutter foot 22 of the inner ring.

The cutter holder 23 is provided with the plurality of cutters 21, and the plurality of cutters 21 are arranged in an inner ring shape and an outer ring shape, so that the area and the efficiency of shaving can be improved compared with the conventional single-ring arrangement of the cutters 21. The whisker leaking groove 231 may be in various shapes such as a square, an arc, an oval, etc., but not limited thereto. The beard leaking groove 231 is formed in the cutter frame 23, so that on one hand, hair cut off by the cutter body 21 can leak out through the beard leaking groove 231, and the hair is prevented from being accumulated above the cutter frame 23 to influence the shaving efficiency; on one hand, the weight of the movable knife 2 is reduced, and further the energy consumption of the driving mechanism during operation is reduced.

Referring to fig. 7 and 8, in some alternative embodiments, the mesh surface 11 of the knife net 1 is a curved surface or a flat surface. Referring to physics analysis, when the net surface 11 of the cutter net 1 is a cambered surface, the cambered surface structure of the cutter net 1 has a larger beard entering area and smaller friction force, so that hairs can be better prevented from being pulled by the cutter net 1 in the shaving process, pain in shaving is reduced, and better shaving experience is provided for a user. When the net surface 11 of the knife net 1 is a plane, the processing cost of the knife net 1 is low.

In some alternative embodiments, the whisker inlet groove of the knife net 1 is a straight groove. When the beard feeding groove of the knife net 1 is a straight groove, the processing cost of the knife net 1 is reduced.

The embodiment of the present application further provides a rotary shaver, which includes the rotary shaver head or the movable blade 2 according to the above embodiment.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, all such changes being within the scope of the appended claims.

Claims

1. The utility model provides a rotation type razor move sword for with the cooperation of sword net, its characterized in that, move the orientation of sword one side of sword net is provided with the axle bush, the inner wall of axle bush is including being used for with the location axle clearance fit's of sword net a plurality of curved location regions that the interval set up.

2. The movable blade of claim 1 wherein the bearing shell has an arcuate locating portion with an angular extent of 30-60 degrees, the bearing shell having a plurality of arcuate locating portions with the same radius, the plurality of arcuate locating portions being concentric to allow the movable blade to travel in cooperation with the bearing shell and the locating shaft.

3. The movable blade of the rotary shaver as set forth in claim 1, wherein the plurality of arc-shaped positioning regions of the bush are disposed at equal intervals along the inner wall of the bush, and a concave non-positioning region is disposed between two adjacent arc-shaped positioning regions of the bush.

4. The movable blade of the rotary shaver according to claim 1, wherein the movable blade comprises a blade body, a blade foot and a blade holder, the blade body is provided with a blade edge, the blade body is arranged on the blade foot, the blade foot is arranged on the blade holder, and a plane defined by a center line of the blade foot in a length direction and a center of a bottom surface of the blade holder is perpendicular to the bottom surface of the blade holder.

5. The movable blade of the rotary shaver according to claim 1, wherein the movable blade comprises a blade body, a blade foot and a blade holder, a first blade for forward shearing and a second blade for reverse shearing are formed at the joint of the side surface and the top surface of the blade body, the top surface of the blade body is an acute angle isosceles triangle or an isosceles trapezoid, the top angle of the isosceles triangle or the upper base of the isosceles trapezoid faces away from the center of the blade holder, the first blade and the second blade respectively correspond to the two waists of the isosceles triangle or the isosceles trapezoid, the blade body is arranged on the blade foot, and the blade foot is arranged on the blade holder.

6. The movable blade of the rotary shaver according to claim 5, wherein the blade holder is provided with a plurality of blade legs corresponding to the blade mesh and distributed in two annular regions, and an included angle between an extending direction of the first blade edge towards the center of the blade holder and an extending direction of the second blade edge towards the center of the blade holder is 20-40 degrees.

7. The moving blade of the rotary shaver as set forth in claim 5, wherein the first cutting edge forms a shearing angle of 10-20 degrees with the cutting edge of the mesh teeth of the shaver, and/or the second cutting edge forms a shearing angle of 10-20 degrees with the cutting edge of the mesh teeth of the shaver, and/or the top surface of the blade body forms a non-right angle with the perpendicular bisector of the blade holder, and the height of the top surface of the blade body increases gradually in a direction away from the center of the blade holder.

8. The moving blade of the rotary shaver set forth in claim 5 wherein the side surface of the blade body forming the first cutting edge and/or the second cutting edge forms a shear rake angle of less than 90 degrees with the top surface of the blade body.

9. A rotary shaver head, characterized in that, the rotary shaver head includes a movable knife and a knife net, one side of the knife net facing the movable knife is provided with a positioning shaft, the movable knife is the movable knife according to any one of claims 1 to 8.

10. A rotary shaver, wherein the rotary shaver comprises the movable blade according to any one of claims 1 to 8.