CN217168600U

CN217168600U - Shaving unit, shaver unit, shaving head and shaver

Info

Publication number: CN217168600U
Application number: CN202121292737.7U
Authority: CN
Inventors: 孟凡迪
Original assignee: Shenzhen Sushi Technology Co Ltd
Current assignee: Shenzhen Sushi Technology Co Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-08-12
Anticipated expiration: 2031-06-09

Abstract

The utility model belongs to the technical field of the little household electrical appliances of personal care, especially, relate to a part of shaving, razor unit, head and razor shave, this part of shaving includes blade disc and a plurality of blade, the blade includes metal blade and ceramic blade, metal blade and ceramic blade all set up on the blade disc, ceramic blade connects in one side of metal blade, and ceramic blade extends towards the direction of rotation of blade disc, along the thickness direction of blade disc, the height that highly is higher than the top of metal blade of the cutting edge of ceramic blade. Therefore, the cutting edges of the ceramic blades are firstly contacted with beards to finish shaving in the rotating process of the cutter head, so that the shaving component keeps better shaving efficiency for a long time. Because the ceramic blade is connected to one side of the metal blade, the metal blade can support and elastically buffer the ceramic blade, so that the structural integrity of the ceramic blade is guaranteed, and the probability of the ceramic blade being broken due to impact is remarkably reduced.

Description

Shaving unit, shaver unit, shaving head and shaver

Technical Field

The application belongs to the technical field of small personal care household appliances, and particularly relates to a shaving component, a shaver unit, a shaving head and a shaver.

Background

With the continuous advancement of technology and the increasing demands of users on the quality of shaving, the blades of current shavers have begun to transform from common metallic materials to ceramic materials. The blade made of the ceramic material has high hardness and good wear resistance, can keep sharp for a long time, and does not have the problems of rusting and aging, thereby being widely concerned.

In the prior art, although the ceramic blade can keep sharp for a long time, the ceramic blade is limited by the structural characteristics of the ceramic blade, is fragile when impacted, and the structural strength is difficult to ensure.

SUMMERY OF THE UTILITY MODEL

The application aims to provide a shaving part, a preparation method thereof, a shaver unit, a shaving head and a shaver, which can enhance the structural strength of a blade and obviously reduce the probability of cracking of a ceramic blade.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

in a first aspect: the shaving component is applied to a shaver and comprises a cutter disc and a plurality of blades, wherein the blades comprise metal blades and ceramic blades, the metal blades and the ceramic blades are arranged on the cutter disc, the ceramic blades are connected to one side of the metal blades, and the ceramic blades extend towards the rotating direction of the cutter disc; and along the thickness direction of the cutter head, the distance between the cutting edge of the ceramic blade and the upper surface of the cutter head is greater than the distance between the cutting edge of the metal blade and the upper surface of the cutter head.

Optionally, the ceramic blade is obliquely arranged on the cutter head, and the metal blade is connected to one side of the ceramic blade facing the cutter head.

Optionally, the ceramic blade and the metal blade are bonded together.

Optionally, a rib is formed on one side of the ceramic blade facing the metal blade, a caulking groove is formed on one side of the metal blade facing the ceramic blade, and the rib is embedded in the caulking groove.

Optionally, a mounting seat is formed at the bottom end of the metal blade, and the lower end of the ceramic blade is inserted into the mounting seat.

Optionally, a side of the ceramic blade facing the metal blade is formed with a metalized layer, and the metalized layer and the metal blade are welded.

Optionally, the ceramic blade is a ferrite ceramic blade, and the ferrite ceramic blade and the metal blade are connected by welding.

Optionally, a chip removal hole is formed in the position, adjacent to the metal blade, of the cutter head, and the outer wall of the metal blade is smoothly connected with the hole wall of the chip removal hole.

Optionally, the metal blade and the cutter head are integrally formed.

Optionally, the metal blade is embedded inside the ceramic blade.

The shaving component provided by the embodiment of the application has at least the following beneficial effects: the utility model provides a part of shaving, it includes the blade disc and uses the center of blade disc as the centre of a circle, be a plurality of blades that the ring-type set up on the blade disc, wherein, each blade includes metal blade and ceramic blade, metal blade sets up on the blade disc, ceramic blade then is connected with metal blade, and along the thickness direction of blade disc, the distance between the cutting edge of ceramic blade and the upper surface of blade disc is greater than the distance between the cutting edge of metal blade and the upper surface of blade disc, so can guarantee the blade disc at the rotation in-process, the cutting edge of ceramic blade is at first with the beard contact, the completion is shaved, so just realized the make full use of to ceramic blade, make the part of shaving keep the efficiency of shaving better for a long time. And because the ceramic blade is connected to one side of metal blade, the metal blade just can realize the support and the elastic buffer effect to ceramic blade like this, when the ceramic blade receives the impact action, the metal blade can bear and dissolve most impact action power like this to make the structural integrity of ceramic blade obtain the guarantee, showing and reduced the cracked probability of ceramic blade receiving the impact.

In a second aspect: the shaver unit comprises a shaver net and the shaving component, and the shaver unit is covered on the shaving component.

According to the shaver unit provided by the embodiment of the application, due to the fact that the shaver unit comprises the shaving part, when the ceramic blade of the shaving part is impacted, the metal blade can bear and dissolve most of impact force, the structural integrity of the ceramic blade is guaranteed, the probability that the ceramic blade is broken due to impact is remarkably reduced, and the use reliability of the shaver unit is improved.

In a third aspect: the shaver head comprises a base, a cover body and the shaver unit, wherein the cover body is arranged on the base, and the shaver unit is arranged in a space enclosed by the cover body and the base.

Embodiments of the present application provide a shaving head that, because it includes the above-described shaving unit, improves the reliability of use of the shaving unit due to the improvement of the shaving member therein, and thus improves the reliability of use of the shaving unit.

In a fourth aspect: the shaver comprises a handle and the shaver further comprises the shaver head, and the shaver head is arranged on the handle.

The shaver provided by the embodiment of the application comprises the shaver head, and the shaver with the shaver head has better use reliability due to the fact that the shaver head has better use reliability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a schematic view of a shaving unit according to an embodiment of the present application;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial view one of a blade of a shaving unit provided in accordance with an embodiment of the present application;

fig. 4 is a second partial view of a blade of a shaving unit according to an embodiment of the present application;

fig. 5 is a partial view three of a blade of a shaving unit provided in an embodiment of the present application;

fig. 6 is a first partial cut-away view of a blade of a shaving unit provided in an embodiment of the present application;

fig. 7 is a second partial cut-away view of a blade of a shaving unit provided in an embodiment of the present application;

fig. 8 is a partial cut-away view three of a blade of a shaving unit provided in an embodiment of the present application;

fig. 9 is a partial cut-away view four of a blade of a shaving unit provided in accordance with an embodiment of the present application;

fig. 10 is a partial cut-away view five of a blade of a shaving unit provided in an embodiment of the present application;

fig. 11 is a schematic structural view of a shaver unit according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a shaver according to an embodiment of the present application.

Wherein, in the figures, the various reference numbers:

10-shaving unit 11-cutter head 12-blade

13-metal blade 14-ceramic blade 15-glue layer

16-convex rib 17-caulking groove 18-mounting seat

19-metallized layer 20-razor unit 21-foil

30-shaver 31-shaving head 32-handle

111-clearance hole.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1 to 12 are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings only for the convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

As shown in fig. 1, 11 and 12, the present embodiment provides a shaving unit 10, a shaver unit 20, a shaving head 31 and a shaver 30. The shaving unit 10 is disposed in the shaving unit 20, the shaving unit 20 is disposed in the shaving head 31, and specifically, the shaving units 20 may be disposed at equal intervals in the shaving head 31. And the shaving head 31 is arranged on a handle 32 of the shaver 30. Wherein the shaver 30 may be a rotary shaver 30.

In particular, in a first aspect, the shaving unit 10 includes a cutter head 11 and a plurality of blades 12. Each blade 12 may be annularly provided on the cutter head 11 with the center of the cutter head 11 as a center. Wherein, each blade 12 may also be annularly distributed on the cutter head 11 layer by layer along the radial direction of the cutter head 11 with the center of the cutter head 11 as the center of circle.

Specifically, the blade 12 includes a metal blade 13 and a ceramic blade 14, the metal blade 13 is disposed on the cutter head 11, the ceramic blade 14 is connected to one side of the metal blade 13, and a cutting edge of the ceramic blade 14 faces one side of the rotation direction of the cutter head 11. In the present embodiment, the metal blade 13 is responsible for supporting and elastically cushioning the ceramic blade 14, and the ceramic blade 14 is responsible for shaving beard.

Specifically, in the thickness direction of the cutter head 11, the distance between the cutting edge of the ceramic blade 14 and the upper surface of the cutter head 11 (the surface facing the ceramic blade 14) is greater than the distance between the cutting edge of the metal blade 13 and the upper surface of the cutter head 11.

Referring to fig. 1 to 3, the shaving unit provided in the embodiments of the present application will be further described as follows: the shaving component provided by the embodiment of the application comprises a cutter head 11 and a plurality of blades 12 which are annularly arranged on the cutter head 11 by taking the center of the cutter head 11 as a circle center, wherein each blade 12 comprises a metal blade 13 and a ceramic blade 14, the metal blade 13 and the ceramic blade 14 are both arranged on the cutter head 11, the ceramic blade 14 is connected to one side of the metal blade 13, and the distance between the cutting edge of the ceramic blade 14 and the upper surface of the cutter head 11 is greater than the distance between the cutting edge of the metal blade 13 and the upper surface of the cutter head 11 along the thickness direction of the cutter head 11, so that the cutting edge of the ceramic blade 14 is firstly contacted with beard to finish shaving in the rotating process of the cutter head 11, the full utilization of the ceramic blade 14 is realized, and the shaving component keeps better shaving efficiency for a long time. The ceramic blade 14 can realize the lasting and high-efficiency shaving effect of the shaving part, and the ceramic blade 14 is connected with the metal blade 13, so that the metal blade 13 can realize the supporting and elastic buffering effect on the ceramic blade 14, and the metal blade 13 can bear and dissolve most of the impact force when the ceramic blade 14 is impacted, thereby ensuring the structural integrity of the ceramic blade 14 and remarkably reducing the possibility that the ceramic blade 14 is impacted and cracked.

In other embodiments of the present application, as shown in fig. 3 and 4, the ceramic blades 14 are obliquely disposed on the cutter head 12, and the metal blades 13 are connected to a side of the ceramic blades 14 facing the cutter head 12. Specifically, by connecting the metal blade 13 to the side of the ceramic blade 14 facing the cutter head 12, the metal blade 13 can effectively support and elastically cushion the ceramic blade 14, so that the ceramic blade 14 can obtain better installation stability.

In other embodiments of the present application, the ceramic blade 14 and the metal blade 13 are bonded together as shown in fig. 5. Specifically, by bonding the ceramic blade 14 and the metal blade 13 together, the ceramic blade 14 and the metal blade 13 are fixedly connected, and the connection stability of the ceramic blade 14 and the metal blade 13 is enhanced. Meanwhile, the glue layer 15 between the ceramic blade 14 and the metal blade 13 can also provide further elastic buffer performance for the ceramic blade 14, so that elastic buffer is further provided for the ceramic blade 14 when the ceramic blade 14 is impacted, and the cracking probability of the ceramic blade 14 caused by impact is further reduced.

Illustratively, the bonding between the ceramic blade 14 and the metal blade 13 may be achieved by using acrylic structural adhesive. Thanks to the good bonding performance and the cured elastic performance of the acrylic structural adhesive, on one hand, the bonding firmness of the ceramic blade 14 and the metal blade 13 can be improved, on the other hand, the better elastic buffer performance between the ceramic blade 14 and the metal blade 13 can be realized, and the impact resistance of the ceramic blade 14 is improved.

In other embodiments of the present application, as shown in fig. 6, the ceramic blade 14 is formed with a rib 16 on a side facing the metal blade 13, the metal blade 13 is formed with a groove 17 on a side facing the ceramic blade 14, and the rib 16 is embedded in the groove 17. Specifically, as a detachable connection mode of the ceramic blade 14 and the metal blade 13, the metal blade 13 and the ceramic blade 14 can be quickly assembled through the insertion and the cooperation of the convex rib 16 and the embedded groove 17, and the ceramic blade 14 can be conveniently detached and replaced.

In other embodiments of the present application, as shown in fig. 7, the bottom end of the metal blade 13 is formed with a mounting seat 18, and the lower end of the ceramic blade 14 is inserted into the mounting seat 18. Specifically, as another detachable connection manner of the ceramic blade 14 and the metal blade 13, the lower end of the ceramic blade 14 may be directly inserted into the mounting seat 18 provided at the bottom end of the metal blade 13, so that the ceramic blade 14 and the metal blade 13 may be detachably connected simply and reliably.

Optionally, based on the scheme that the ceramic blade 14 is adhered to the metal blade 13, on the basis of the scheme, the lower end of the ceramic blade 14 may also be directly inserted into the mounting seat 18 arranged at the bottom end of the metal blade 13, so that the connection relationship between the ceramic blade 14 and the metal blade 13 is further strengthened, and the connection stability between the ceramic blade 14 and the metal blade 13 is improved. Further, an elastic member such as a spring plate may be disposed in the mounting seat 18, so that the elastic buffer performance between the ceramic blade 14 and the metal blade 13 may be further improved.

Optionally, based on the scheme that the rib 16 is embedded in the embedding groove 17, on the basis of the scheme, the lower end of the ceramic blade 14 is directly inserted into the mounting seat 18 arranged at the bottom end of the ceramic blade 14, and the lower end of the ceramic blade 14 is in interference fit with the mounting seat 18, so that the ceramic blade 14 and the ceramic blade 14 are detachably connected, and meanwhile, the connection stability of the ceramic blade 14 and the ceramic blade 14 is also improved.

In other embodiments of the present application, as shown in fig. 8, the side of the ceramic blade 14 facing the metal blade 13 is formed with a metalized layer 19, and the metalized layer 19 and the metal blade 13 are welded together. Specifically, by forming the metallized layer 19 on one side of the ceramic blade 14, the metallization of the ceramic blade 14 is realized, so that the ceramic blade 14 can be connected with the metal blade 13 by welding such as brazing, the connection firmness of the ceramic blade 14 and the metal blade 13 is preferably improved, and the metal blade 13 can provide sufficient support and elastic buffer for the ceramic blade 14.

In other embodiments of the present application, ceramic blade 14 is a ferrite ceramic blade 14, and ferrite ceramic blade 14 and metal blade 13 are welded together. Specifically, by making ceramic blade 14 be ferrite ceramic blade 14, make ceramic blade 14 have the metal property like this on the one hand, can realize the welded connection with metal blade 13 to improve the fastness of connection of ceramic blade 14 and metal blade 13, on the other hand also makes ceramic blade 14 become magnetic ceramic blade 14, even ceramic blade 14 receives the impact and produces the piece like this, the piece also can be adsorbed in ceramic blade 14 main part under the magnetic attraction effect of ceramic blade 14 main part, avoid the piece to splash, cause the injury to the user.

Illustratively, ferrite ceramic blade 14 may be magnetized to make ceramic blade 14 magnetic. By making the ceramic blade 14 a ferrite ceramic blade 14 subjected to magnetization treatment, the ceramic blade 14 having good magnetic properties can be manufactured at a low cost due to the characteristics of a ferrite material that is low in manufacturing cost, has good magnetic properties, and is suitable for industrial production.

Alternatively, the ferrite material may be a hard magnetic material, such as barium ferrite, etc., and the hard magnetic material is not easy to demagnetize after being magnetized (also referred to as magnetization), so as to maintain a better magnetic property for a long time, and thus the magnetic ceramic blade 1413 can also have a better long-term magnetic property.

In other embodiments of the present application, the ceramic blade 14 may also be a magnetized nickel ferrite ceramic blade 14. In particular, by making the ceramic blade 14 a ferrite ceramic blade 14 that is magnetized, it is possible to make the ceramic blade 14 have better magnetic properties thanks to the better magnetic properties of the ferrite material.

In other embodiments of the present application, the ceramic blade 14 may also be a tungsten steel ceramic blade 14 that has been magnetized. In particular, the corrosion resistance of the ceramic blade 14 can be improved due to the better corrosion resistance of tungsten steel.

Illustratively, the ferrite ceramic blade 14, the nickel ferrite ceramic blade 14, and the tungsten steel ceramic blade 14 may be manufactured by:

the method specifically comprises the following steps:

firstly, providing magnetic material powder such as ferrite powder, nickel ferrite powder and tungsten steel powder, and uniformly mixing the magnetic material powder and ceramic powder to form mixed powder, wherein the mass part ratio of the magnetic material powder to the ceramic powder can be 1:3, so that on one hand, the magnetic ceramic blade 1413 formed by pressing has enough magnetism, and on the other hand, the magnetic ceramic blade 1413 is ensured to have enough ceramic content, so as to improve the wear resistance and effectively control the manufacturing cost.

Next, the mixed powder is formed into a plurality of ceramic blades 14 by means of hot isostatic pressing, 3D printing, or the like. This allows for less costly precision manufacture of the ceramic blade 14.

In other embodiments of the present application, as shown in fig. 1 and fig. 2, the cutter head 11 is provided with a clearance hole 111 at a position adjacent to the metal blade 13, and the outer wall of the metal blade 13 is smoothly connected with the wall of the clearance hole 111. Specifically, by smoothly connecting the outer wall of the metal blade 13 and the wall of the chip removal hole 111, the shaving residue shaved by the ceramic blade 14 can smoothly slide into the chip removal hole 111 along the outer wall of the metal blade 13, so that effective collection of the shaving residue is realized, the shaving residue is prevented from being pushed and accumulated on the cutter head 11 and attached to the ceramic blade 14, the ceramic blade 14 can smoothly shave, and the shaving efficiency of the shaving part 10 is improved.

In other embodiments of the present application, the metal blade 13 is integrally formed with the impeller 11. Specifically, the metal blade 13 and the cutter head 11 are integrally formed, so that on one hand, the connection stability of the metal blade 13 and the cutter head 11 is improved, the probability of cracks at the joint of the metal blade 13 and the cutter head 11 is reduced, and further, the overall structural strength of the shaving part 10 is improved. On the other hand, the metal blade 13 and the cutter head 11 are integrally formed, so that the manufacturing difficulty and the manufacturing cost of the metal blade 13 and the cutter head 11 are effectively reduced.

Illustratively, the metal blade 13 and the cutter head 11 can be manufactured by integral forging and forming or integral casting and forming.

In other embodiments of the present application, as shown in fig. 9, the metal blade 13 is embedded inside the ceramic blade 14. Specifically, as another connection mode of the metal blade 13 and the ceramic blade 14, the metal blade 13 may be embedded inside the ceramic blade 14, so that the concealed installation of the metal blade 13 may be realized, and the ceramic blade 14 may also be provided with omnidirectional support and elastic buffering.

Illustratively, as shown in fig. 10, a slot is opened in the ceramic blade 14 along the height direction thereof, and the metal blade 13 is inserted into the slot to enable the metal blade 13 to be embedded in the ceramic blade 14. Optionally, after the metal blade 13 is inserted into the slot, the metal blade 13 may be fixed in the slot in a glue pouring manner, so that the connection stability between the metal blade 13 and the ceramic blade 14 is improved, and meanwhile, the elastic buffering performance between the metal blade 13 and the ceramic blade 14 is further improved by the glue layer 15 formed in the slot after the glue pouring.

Referring to fig. 11, in a second aspect: the embodiment of the present application further provides a razor unit 20, which includes a blade mesh 21, the razor unit 20 further includes the above shaving unit 10, and the blade disc 11 is covered on the shaving unit 10.

The shaver unit 20 provided by the embodiment of the present application includes the shaving unit 10, and when the ceramic blades 14 of the shaving unit 10 are impacted, the metal blades 13 can bear and resolve most of the impact force, so that the structural integrity of the ceramic blades 14 is ensured, the probability of the ceramic blades 14 being cracked due to the impact is significantly reduced, and the reliability of the use of the shaver unit 20 is also improved.

Referring to fig. 12, in a third aspect, an embodiment of the present application further provides a shaving head 31, including a base, a cover and the above-mentioned shaver unit 20, wherein the cover is disposed on the base, and the shaver unit 20 is disposed in a space enclosed by the cover and the base.

The embodiment of the present application provides a shaving head 31 which, due to the inclusion of the above-mentioned shaver unit 20, improves the reliability of use of the above-mentioned shaver unit 20 due to the modification of the shaving unit 10 therein, and thus also improves the reliability of use of the shaver unit 20.

Referring to fig. 12, in a fourth aspect, the present embodiment further provides a shaver 30, which includes a handle 32, the shaver 30 further includes the above-mentioned shaver head 31, and the shaver head 31 is disposed on the handle 32.

The shaver 30 provided by the embodiment of the present application, including the shaving head 31, has better reliability in use due to the shaving head 31, so that the shaver 30 having the shaving head 31 has better reliability in use.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A shaving unit for use in a shaving razor, comprising: the ceramic cutting device comprises a cutter head and a plurality of blades, wherein the blades comprise metal blades and ceramic blades, the metal blades and the ceramic blades are arranged on the cutter head, the ceramic blades are connected to one sides of the metal blades, and the ceramic blades extend towards the rotating direction of the cutter head; and along the thickness direction of the cutter head, the distance between the cutting edge of the ceramic blade and the upper surface of the cutter head is greater than the distance between the cutting edge of the metal blade and the upper surface of the cutter head.

2. The shaving element of claim 1, wherein: the ceramic blade is obliquely arranged on the cutter head, and the metal blade is connected to one side of the ceramic blade facing the cutter head.

3. The shaving element of claim 1, wherein: the ceramic blade and the metal blade are bonded together.

4. The shaving element of claim 1, wherein: the ceramic blade orientation one side of metal blade is formed with protruding muscle, the metal blade orientation one side of ceramic blade is formed with the caulking groove, protruding muscle inlays to be located in the caulking groove.

5. A shaving unit according to any one of claims 1 to 4, wherein: the bottom end of the metal blade is provided with a mounting seat, and the lower end of the ceramic blade is inserted into the mounting seat.

6. A shaving unit according to any one of claims 1 to 4, wherein: one side of the ceramic blade, which faces the metal blade, is provided with a metalized layer, and the metalized layer is connected with the metal blade in a welding mode.

7. A shaving unit according to any one of claims 1 to 4, wherein: the ceramic blade is a ferrite ceramic blade, and the ferrite ceramic blade is connected with the metal blade in a welding mode.

8. A shaving unit according to any one of claims 1 to 4, wherein: the cutter head is provided with a chip removal hole at a position adjacent to the metal blade, and the outer wall of the metal blade is smoothly connected with the hole wall of the chip removal hole.

9. A shaving unit according to any one of claims 1 to 4, wherein: the metal blade and the cutter head are integrally formed.

10. A shaving unit according to any one of claims 1 to 4, wherein: the metal blade is embedded in the ceramic blade.

11. A razor unit comprising a foil, characterized in that: the shaving unit further comprising a shaving unit according to any one of claims 1 to 10, said cutter head cover being provided on said shaving unit.

12. A shaving head characterized by: comprising a base, a cover arranged on the base, and a shaver unit according to claim 11, which shaver unit is arranged in a space enclosed by the cover and the base.

13. A razor comprising a handle, characterized in that: the shaver further comprises a shaving head as claimed in claim 12, which is arranged on the handle.