Cutting member of a multi-blade shaving razor featuring a narrow platform for ease of cleaning / welded blades on a support having a narrow platform portion

Abstract

A shaving head comprising a guard, a first blade and a second blade, the first blade comprising a first cutting element and a support, the first cutting element comprising a cutting edge portion having a cutting edge and a mounting portion mounted on the support, the mounting portion extending from the cutting edge portion in a direction opposite to the cutting edge, the second blade comprising a second cutting element having a cutting edge, the first and second blades being arranged directly adjacent to each other such that the cutting edges of the first and second cutting elements are substantially parallel to each other and are arranged to simultaneously contact the skin during shaving, and such that an interblade gap between the first and second blades is in the range of 0.25 mm to 0.55 mm, the interblade gap being the smallest distance between directly adjacent blades, and such that an interblade span between the cutting edges of the first and second cutting elements is in the range of 0.90 mm to 1.60 mm, the interblade span being the distance between directly adjacent cutting edges.

Description

[0001] Cross Reference to Related Applications

[0002] This application is the national phase application of International Application No. PCT / EP2021 / 054658, filed February 25, 2021, now published as WO 2021185550, which claims priority to European Patent Application EP 20163838.4, filed March 18, 2020, the contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the field of shaving, in particular to a shaving head and a blade thereof. BACKGROUND

[0004] A shaving head is a shaving device comprising one or more blades (each blade having at least one cutting edge) and a guard to which the one or more blades are attached. Shaving heads are commonly found in safety razors, such as cartridge razors (where the blades are detachable from the guard), disposable razors (where the shaving head and associated operating parts, such as a handle, are simultaneously interchangeable), and box razors (where the shaving head is detachable and replaceable from the operating parts).

[0005] When a shaving head comprises at least two blades, the blades can be understood as being assembled together when they are both attached to the guard.

[0006] When a shaving head comprises two or more blades and these blades are arranged to simultaneously contact the skin with their respective cutting edges during shaving, the cutting edge of a first blade of the two or more blades can be substantially parallel to the cutting edge of a second blade of the two or more blades.

[0007] When a plurality of cutting edges are arranged to simultaneously contact the skin during shaving, the cutting edges can be understood as being located on a shaving surface or being offset with respect to a shaving surface. During shaving, the cutting edges move on the skin along a shaving path located on the shaving surface and perpendicular to the cutting edges. When moving along the shaving path according to a shaving direction, hairs can be removed. The shaving surface is defined as the plane tangent to the front and rear skin contact points (with respect to the shaving direction) of the shaving head. The blade exposure of a shaving head refers to the distance of the cutting edge from the shaving surface when measured normal to the shaving surface.

[0008] Users often evaluate their satisfaction with a given shaving head based on factors such as comfort and ease of use during shaving. During shaving, debris such as hair and / or skin cells and / or sebum can accumulate in the shaving head in combination with one or more shaving products such as shaving cream or shaving oil. One factor that can affect a user's perception of ease of use of a shaving head can be the relative ease of removing such debris from the shaving head. SUMMARY

[0009] Accordingly, there is a need to provide a shaving head that is easy to rinse. According to examples of the present disclosure, a shaving head can be provided. The shaving head includes a guard, a first blade, and a second blade. The first blade includes a first cutting element and a support. The first cutting element includes a cutting edge portion and a mounting portion. The cutting edge portion includes a cutting edge. The mounting portion extends from the cutting edge portion in a direction opposite the cutting edge. The mounting portion is mounted on the support. The second blade includes a second cutting element. The second cutting element includes a cutting edge. The first and second blades are arranged directly adjacent to each other. The cutting edges of the first and second cutting elements are substantially parallel to each other and are arranged to simultaneously contact skin during shaving. An interblade gap between the first and second blades is in a range of 0.25 mm to 0.55 mm. The interblade gap is the minimum distance between directly adjacent blades. An interblade span between the first and second cutting elements is in a range of 0.9 mm to 1.60 mm. The interblade span is the minimum distance between two directly adjacent cutting edges.

[0010] Such a shaving head can exhibit high rinsability while still being perceived as comfortable by a user during shaving.

[0011] An overhang length of the first blade can be in a range of 0.5 mm to 1 mm, or 0.55 mm to 1 mm, or 0.55 mm to 0.88 mm.

[0012] The support can include a platform portion on which the mounting portion is mounted. The platform portion can extend along the mounting portion. The support can include a base portion extending obliquely or perpendicularly from the platform portion for assembling the first blade to the guard.

[0013] The base portion can have a thickness of 0.1 mm to 0.3 mm, the thickness being measured in an orthogonal manner to an inner surface of the base portion.

[0014] The platform portion can have a length of 0.5mm to 0.9mm. The length of the platform portion is measured along the mounting portion from an internal apex formed by surfaces of the platform portion and the base portion facing each other towards the cutting edge of the cutting edge portion.

[0015] The ratio of the length of the platform portion to the length of the first blade can be in the range of 0.33 to 0.64.

[0016] The length of the first blade can be measured along the mounting portion from the internal apex to the cutting edge.

[0017] An outer surface of the base portion can be arranged away from the platform portion. The width of the first blade can be in the range of 0.9mm to 1.70mm. The width of the first blade can be measured in a direction orthogonal to the outer surface of the base portion from the outer surface of the base portion to the cutting edge of the cutting edge portion.

[0018] The overlap length between the first and second blades can be in the range of 0mm to 0.55mm.

[0019] The support can be intermediate the first cutting element and the second blade. Alternatively, the first cutting element can be between the support and the second blade.

[0020] The first cutting element can be arranged on a surface of the support arranged towards the skin during shaving.

[0021] The first cutting element can be arranged on a surface of the support arranged away from the skin during shaving.

[0022] There can be provided a shaver comprising a shaving head as described herein before.

[0023] The shaver can comprise a vibrator.

[0024] There is also provided a method of manufacturing a shaving head as described herein before. The method comprises providing the first blade and providing the second blade, and assembling the first and the second blade together.

[0025] Providing the first blade can comprise providing a support and providing the first cutting element. Providing the support can comprise providing a flat element and bending the flat element to obtain the support. The support can comprise a base portion for assembling the first blade to the second blade and a platform portion on which the first cutting element can be mounted. The platform portion can extend obliquely or perpendicularly from the base portion. Providing the first blade can lack a step of removing material from the platform portion of the support after the bending step.

[0026] Assembling the first blade and the second blade together can comprise holding the second blade on a shroud and holding the base portion of the first blade on the shroud.

[0027] The method can comprise a step of measuring the rinsability of the shaving head.

[0028] There is also provided a process for measuring the rinsability of a shaving head for such a method. The method comprises mounting the shaving head downstream of a liquid dispenser and upstream of a first flow path and a second flow path separate from the first flow path, such that liquid dispensed from the liquid dispenser is delivered to the shaving head, liquid directed along the first flow path is directed through the shaving head, and liquid directed along the second flow path is directed around the shaving head. The method comprises dispensing a known amount of liquid from the liquid dispenser. The method comprises measuring the amount of liquid directed along the first flow path and / or the amount of liquid directed along the second flow path.

[0029] The method can comprise arranging a gasket between the shaving head and the boundary of the first flow path. BRIEF DESCRIPTION OF DRAWINGS

[0030] Various aspects of the disclosure can be more fully understood from the detailed description that follows, in conjunction with the accompanying drawings, in which:

[0031] Figure 1A A blade arrangement for a reference shaving head is shown;

[0032] Figure 1B A schematic representation of the relationship between shaving head geometry and user experience is shown;

[0033] Figure 2A An exemplary blade arrangement for an exemplary shaving head is shown;

[0034] Figure 2B A first blade as shown in Figure 2A

[0035] Figure 3 ​A comparison between the reference blade shown in Figure 1A Figure 2B

[0036] Figure 4 A comparison between the reference blade shown in Figure 3

[0037] Figure 5 A comparison between the reference blade shown in Figure 3

[0038] Figure 6 A process flow diagram for manufacturing an exemplary shaving head is shown.

[0039] Figure 7A A process flow diagram for an exemplary process method for measuring flushability of a shaving head is shown.

[0040] Figure 7B A schematic diagram of an apparatus for measuring flushability of a shaving head is shown.

[0041] Figure 8 A detailed view of the apparatus shown in Figure 7B

[0042] A detailed view of the apparatus shown in Figure 9 Figure 1A

[0043] Figure 10 A detailed view of the apparatus shown in Figure 2A

[0044] Figure 11 An exemplary shaving razor including an exemplary shaving head is shown.

[0045] The term "exemplary" is used herein to mean "serving as an example, instance, or illustration." Unless otherwise clear from the context, the term "exemplary" is not used herein to mean "ideal" or "perfect." While aspects of the present disclosure can be modified and varied, examples of specific embodiments are illustrated by the following detailed description. It is to be understood that the foregoing detailed description is illustrative only and not intended to be limiting on the aspects of the present disclosure. DETAILED DESCRIPTION

[0046] As used in the present disclosure and the accompanying claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in the present disclosure and the accompanying claims, the term "or" is generally employed in its sense of "and / or" unless the content clearly dictates otherwise.

[0047] ​​​​​​​The following detailed description should be read with reference to the drawings, in which: The detailed description and drawings depict illustrative aspects, and are not intended to limit the scope of the disclosure. The illustrative aspects depicted are merely examples and are not intended to be limiting.

[0048] When an element or feature is referred to as being “on”, “engaged to”, “connected to” or “coupled to” another element or feature, it can be directly on, engaged, connected or coupled to the other element or feature, or intervening elements or features can be present. In contrast, when an element or feature is referred to as being “directly on”, “directly engaged to”, “directly connected to” or “directly coupled to” another element or feature, there are no intervening elements or features present. Other words used to describe the relationship between elements should be interpreted in a like fashion (e.g., “between” versus “directly between”, “adjacent” versus “directly adjacent”, etc.).

[0049] Although the terms “first”, “second”, etc. can be used herein to describe various elements, components, regions, layers, sections, and / or parameters, these elements, components, regions, layers, sections, and / or parameters should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer, or section from another region, layer, or section. Thus, a first element, component, region, layer, or section discussed herein could be termed a second element, component, region, layer, or section without departing from the teachings of the inventive subject matter.

[0050] Figure 1A A reference blade arrangement 111 for referencing a shaving head is shown.

[0051] In the reference blade arrangement 111, a first reference blade 112A and a second reference blade 112B are arranged such that movement of the reference shaving head in its shaving direction 700 causes the first reference blade 112A to follow the second reference blade 112B.

[0052] The reference blade arrangement 111 has a blade-to-blade span 702 of 1.3 mm (millimeters) between the cutting edges 118A, 118B of the first reference blade 112A and the second reference blade 112B. The blade-to-blade span is the distance between immediately adjacent cutting edges.

[0053] Figure 1BA diagram showing the relationship between shaving head geometry and user experience When a user shaves with a shaving head that has multiple cutting edges that simultaneously contact the skin, the contact of the cutting edges on the skin can cause the user to feel uncomfortable or unpleasant. User feedback indicates that shaving heads with a relatively large inter-blade span ("IBS", represented along the lower horizontal axis) can be less comfortable (user comfort "C") than shaving heads with a relatively small inter-blade span (represented on the upper horizontal axis). Examples of shaving heads with a relatively large inter-blade span are represented at position 1, and examples of shaving heads with a relatively small inter-blade span are represented at position 2.

[0054] However, during shaving, debris can accumulate between directly adjacent blades, which can reduce the shaving performance. Testing and user feedback indicate that a relatively small inter-blade span (position 2) can reduce the rinsing performance in clearing accumulated debris. In other words, it can reduce the rinsability of the shaving head (rinsability "R" is represented on the right vertical axis). As an example, a user can feel that a shaving head with a relatively low rinsability requires more and / or more forceful and / or more rinsing than a shaving head with a relatively high rinsability.

[0055] The inventors have realized that, in determining the rinsability of at least certain shaving heads, the inter-blade clearance ("IBC", represented on the left vertical axis) can be more influential than the inter-blade span. The inter-blade clearance is the minimum distance between directly adjacent blades. The shaving heads represented at positions 3 and 4 have a larger inter-blade clearance than the shaving heads represented at positions 1 and 2, respectively, and exhibit a higher rinsability than the shaving heads represented at positions 1 and 2, respectively. Even though the shaving head represented at position 5 has a smaller inter-blade span than the shaving head represented at position 2, the shaving head represented at position 5 exhibits a rinsability comparable to the shaving head represented at position 2.

[0056] Now returning to Figure 1A , the reference blade arrangement 111 has an inter-blade clearance 704 of 0.29 mm between the first reference blade 112A and the second reference blade 112B.

[0057] In Figure 7A-10 , the quantification of rinsability will be discussed in more detail.

[0058] Figure 2AAn exemplary blade arrangement 11 for an exemplary shaving head is shown, comprising at least two directly adjacent and substantially parallel cutting edges 18A, 18B configured to simultaneously contact skin during shaving. The exemplary shaving head comprises at least two blades 12A, 12B. A first blade 12A of the at least two blades comprises a first cutting edge 18A of the at least two cutting edges. A second blade 12B of the at least two blades comprises a second cutting edge 18B of the at least two cutting edges. As with the reference blade arrangement shown in Figure 1A In the exemplary blade arrangement 11, the second exemplary blade 12B leads the first exemplary blade 12A when the exemplary shaving head is moved along its shaving direction 600, as with the reference blade arrangement shown in

[0059] The interblade gap 604 between the first blade 12A and the second blade 12B can be in the range of 0.25 mm to 0.55 mm. Alternatively, the interblade span 602 between the first cutting edge 18A and the second cutting edge 18B can be in the range of 0.90 mm to 1.60 mm.

[0060] For example, a particular shaving head with a blade arrangement as shown in Figure 2A The particular shaving head shown can have an interblade span 602 of 1.3 mm and an interblade gap 604 of 0.42 mm between the first cutting edge 18A and the second cutting edge 18B. Thus, a user can perceive the exemplary shaving head to have a comparable comfort during shaving as the reference shaving head, while having a better rinsability than the reference shaving head. However, other combinations of interblade gap and interblade span are also contemplated.

[0061] While the blade arrangement 11 is represented as giving the shaving head 0 μm (micrometers) of blade exposure 606, it is contemplated that the exposure can be as low as -100 μm (meaning that the cutting edges are recessed within the guard that amount) to as high as 100 μm (meaning that the cutting edges are protruding from the guard that amount).

[0062] Figure 2B An exemplary shaving head is shown in Figure 2A The first blade 12A visible in

[0063] The first blade 12A comprises a cutting element 14A and a support 30A. The cutting element 14A comprises the first cutting edge 18A.

[0064] The cutting element 14A is mounted on the support 30A, for example, welded to the support. However, it is also contemplated that a given cutting element can be mounted on a given support, for example, with an adhesive. The cutting element 14A can be mounted on a surface of the support that faces the skin during shaving. However, it is also contemplated that the cutting element 14A can be mounted on a surface of the support that faces away from the skin during shaving.

[0065] The cutting element 14A comprises a cutting edge portion 16A and a mounting portion 20A. The cutting edge portion 16A comprises a first cutting edge 18A.

[0066] The mounting portion 20A extends from the cutting edge portion 16A in a direction opposite to the first cutting edge 18A. The mounting portion 20A is mounted on the support 30A.

[0067] The mounting portion 20A of the cutting element comprises a mounting surface 22A which, when the cutting element 14A is mounted thereon, is arranged towards the support 30A.

[0068] When the cutting element 14A and the support 30A are mounted to each other, they define an interface surface 410A therebetween which is a geometric reference for measuring certain aspects of the blade and / or shaving head geometry. As an example, the interface surface 410A can coincide with the mounting surface 22A of the mounting portion 20A.

[0069] The cutting edge 18A can be formed on the cutting edge portion 16A by any known method. Thus, the cutting edge 18A can or can not coincide with the mounting surface 22A of the mounting portion 20A. When the cutting edge 18A of the cutting edge portion 16A does not coincide with the mounting surface 22A of the mounting portion 20A, it can be understood that the interface surface 410A extends from the mounting surface 22A in a locally tangential manner.

[0070] As a non-limiting example, the cutting element 14A can have a width 608A in the range of 0.95 mm to 1.68 mm or even 1.4 mm, for example. The width 608A of the cutting element is measured along its mounting surface 22A to the maximum distance to which its mounting portion 20A extends away from its cutting edge 18A. When the cutting edge 18A does not coincide with the interface surface 410A, the width 608A of the cutting element can be measured as the maximum distance to which the mounting portion 20A extends away from the orthogonal projection 412A of the cutting edge 18A on the interface surface 410A.

[0071] As a non-limiting example, the cutting element 14A can have a thickness 610A in the range of 0.05-0.15 mm or even 0.074-0.1 mm. The thickness 610A of the cutting element can be measured orthogonally to its mounting surface 22A.

[0072] The overhang length is the minimum distance from the cutting edge of the cutting element portion of the cutting edge (or its orthogonal projection 412A on the interface surface 410A when the cutting edge does not coincide with the mounting surface 22A) to a portion of the mounting surface 22A that is in contact with the support 30A. The overhang length 612A of the first blade 12A can range from 0.5 mm to 1 mm, or from 0.55 mm to 1 mm, or even, for example, from 0.55 mm to 0.88 mm. For example, Figure 2B The particular first blade 12A shown in FIG. 6A can have an overhang length 612A of 0.62 mm. The overhang length 612A can contribute to the flexibility of the cutting edge portion 14A, which can improve the adaptability of the blade 12A to the contours of the skin during shaving.

[0073] The support 30A can include a platform portion 32A on which the mounting portion 20A is mounted, and a base portion 40A that extends perpendicularly or obliquely away from the platform portion 32A. The platform portion 32A of the support can extend along the mounting portion 20A of the cutting element.

[0074] The contact length between the mounting portion 20A of the cutting element and the platform portion 32A of the support can be measured along the mounting portion 20A of the cutting element and perpendicularly to the cutting edge 18A of the cutting edge portion. As a non-limiting example, the contact length 614A between the mounting portion 20A and the platform portion 32A can range from 0.5 mm to 0.90 mm. For example, Figure 2B The particular first blade 12A shown in FIG. 6A can have a contact length 614A between its mounting portion 20A and the platform portion 32A of 0.48-0.72 mm or even 0.6 mm.

[0075] The platform portion thickness 622A can be measured orthogonally to the mounting portion 20A (e.g., orthogonally to the interface surface 410A). As an example, the thickness 622A of the platform portion 32A can range from 0.1 mm to 0.3 mm, or even from 0.15 mm to 0.3 mm, or even from 0.2 mm to 0.3 mm. For example, Figure 2B The particular first blade 12A shown in FIG. 6A can have a support 30A with a platform portion 32A having a thickness of 0.28 mm.

[0076] The platform portion 32A includes an inner surface 34A and an outer surface 36A, such that the inner surface 34A of the platform portion 32A is disposed toward the base portion 40A, while the outer surface 36A of the platform portion 32A is disposed away from the base portion 40A. The outer surface 36A can be disposed toward the skin during shaving.

[0077] The platform portion 32A and the mounting portion 20A can be substantially congruent in shape to one another. For example, when the mounting surface 22A is substantially flat, the platform portion 32A can also be substantially flat, at least on its outer surface 36A.

[0078] The base portion 40A can hold the first blade 12A in the guard of the shaving head, for example directly adjacent Figure 2A the second blade 12B visible in FIG. 2. The base portion 40A includes an inner surface 42A disposed toward the platform portion 32A, and an outer surface 44A disposed away from the platform portion 32A.

[0079] The base portion thickness 626A can be measured orthogonally to the inner surface 42A of the base portion 40A. As an example, the base portion 40A can have a thickness in the range of 0.1 mm to 0.3 mm, or even 0.15 to 0.3 mm, or even 0.2 mm to 0.3 mm. Or, as an example, the base portion thickness 626A can be similar or identical to the platform portion thickness 622A. For example, Figure 2B The particular first blade shown has a support 30A with a base portion thickness of 0.28 mm.

[0080] The inner surfaces 34A, 42A of the platform portion 32A and the base portion 40A define an angle whose rays lie between the inner surface 34A of the platform portion 32A and the inner surface 42A of the base portion 40A, the apex of which is referred to as the "internal apex" 430A.

[0081] The platform portion length 620A can be measured from the internal apex 430A (or, when the internal apex 430A does not coincide therewith, the orthogonal projection of the internal apex onto the mounting surface 22A or the interface surface 410A) along the mounting portion (e.g., along the interface surface 410A) and perpendicular to the cutting edge 18A of the cutting element of the blade, toward the cutting edge 18A (or, when the cutting edge 18A does not coincide therewith, toward the orthogonal projection 412A of the cutting edge onto the interface surface 410A), extending to the end of the cutting edge closest to the orthogonal projection of the platform portion onto the interface.

[0082] As an example, the platform portion 32A can have a length 620A in the range of 0.5 mm to 0.9 mm, or even 0.7 mm to 0.9 mm. For example, Figure 2B The particular first blade 12A shown in FIG. 2 can have a support 30A with a platform portion 32A length 620A of 0.80 mm.

[0083] As a non-limiting example, the base portion 40A can extend from the platform portion 32A at a so-called bend angle 624A (in the range of 64° (degrees) to 72°) measured between the outer surfaces 44A, 36A of the base portion 40A and the platform portion 32A portions. The bend angle 624A corresponds to the amount by which the flat element is bent during the manufacturing of the support 30A to form the base portion 40A and the platform portion 32A.

[0084] The blade length 621A can be measured from the inner vertex 430A (or its orthogonal projection on the interface 410A) to the cutting edge 18A (or its orthogonal projection on the interface 410).

[0085] Now returning to Figure 2A It can be seen that the support 30A can be intermediate the cutting element 14A of the first blade and the second blade 12B, for example such that a line drawn from the end of the cutting element 14A of the first blade (away from its cutting edge 18A) to the second blade 12B can intersect the support 30A of the first blade. The cutting element 14A of the first blade can be disposed on a surface of the platform portion 32A which is arranged towards the skin during shaving.

[0086] However, it can also be contemplated that the cutting element 14A of the first blade is intermediate the support 30A and the second blade 12B, for example such that a line connecting the mounting surface of the first blade to the second blade 12A can intersect the cutting element 14A of the first blade. The cutting element 14A of the first blade can be disposed on a surface of the platform portion 32A which is arranged away from the skin during shaving.

[0087] The height of the blade is the maximum distance between the support of the blade and the cutting edge measured orthogonally to the shaving surface. As a non-limiting example, the height 642A of the first blade can range from 2.00 mm to 3.0 mm, or even from 2.1 mm to 2.35 mm.

[0088] The "base portion length" of the blade is the distance from the inner vertex 430A of the support to the end 40A of the base portion 40A away from this vertex. As a non-limiting example, the base portion length 628A of the first blade can range from 0.7 mm to 2.5 mm or even from 1.00 mm to 1.40 mm. For example, Figure 2A The base portion length 628A of the particular first blade 12A shown can be 1.38 mm.

[0089] The width 644A of the first blade 12A (also referred to as its so-called "D dimension") can be measured in various ways. For example, it can be the maximum distance between the cutting edge 18A and the orthogonal projection 414A of the support 30A on the shaving surface 440, or for example, it can be measured in a direction normal to the outer surface 44A of the base portion from the outer surface 44A of the base portion to the cutting edge 18A of the cutting edge portion. When the particular first blade 12A shown in Figure 2A When the outer surface 44A of the base portion is arranged perpendicular to the shaving surface 440 as with the particular first blade 12A shown, the maximum distance between the cutting edge 18A and the orthogonal projection of the support 30A on the shaving surface 440 can be equal to the distance between the outer surface 44A of the base portion and the cutting edge 18A of the cutting edge portion measured normal to the outer surface 44A of the base portion.

[0090] As a non-limiting example, the width 644A of the first blade 12A can range from 0.9 mm to 1.70 mm, or even from 1 mm to 1.55 mm, or even from 1.45 mm to 1.51 mm. For example, Figure 2A The particular first blade shown can have a width of 1.5 mm. As a non-limiting example, it is also contemplated to provide a first blade 12A having a width 644A of 1.48 mm.

[0091] The support width 630A can be measured in various ways. For example, it can be the maximum distance between the opposite ends of the orthogonal projection of the blade support 30A on the shaving surface 440 measured perpendicular to the cutting edge 18A of the blade, or for example, it can be the maximum distance between the opposite ends 39A, 49A of the base portion 40A and the platform portion 32A of the support measured normal to the outer surface 44A of the base portion. When the particular first blade shown in Figure 2A When the outer surface 44A of the base portion is arranged perpendicular to the shaving surface 440 as with the particular first blade shown in, the maximum distance measured perpendicular to the cutting edge 18A between the opposite ends of the orthogonal projection of the support 30A on the shaving surface 440 can be equal to the maximum distance between the opposite ends 39A, 49A of the base portion 40A and the platform portion 32A of the support measured normal to the outer surface 44A of the base portion.

[0092] As a non-limiting example, the support width 630A of the first blade 12A can range from 0.60 mm to 1.15 mm. For example, Figure 2A The support width 630A of the particular first blade 12A shown can be 0.99 mm.

[0093] The "blade offset" of a blade is the difference between its blade width and support width, and essentially corresponds to the amount of space available for debris accumulation. Reference will be made to Figure 4 and Figure 5 Debris accumulation is discussed in more detail. As a non-limiting example, Figure 2A The blade offset 670A of the particular first blade 12A shown in

[0094] The width of the first blade is measured along its cutting edge 18A. As a non-limiting example, the width of the first blade 12A can be in the range of 0.95 mm to 1.68 mm.

[0095] While the first blade 12A and the second blade 12B are shown as identical to each other, it is also contemplated that the second blade 12B can be different from the first blade 12A. When at least one third blade is provided, the first blade 12A and the second blade 12B can each be identical to or different from the third blade, independently of each other.

[0096] The overlap length is the difference between the interblade span between the cutting edge of a leading blade (e.g., the second blade 12B and 112B shown in the shaving cartridge 11 and 111 of Figure 1A and 2A the cutting edge of a subsequent blade (e.g., the first blade 12A and 112B shown in the shaving cartridge 11 and 111 of Figure 1A and 2A and the width of the leading blade (e.g., the width 644B of the second blade 12B in Figure 2A

[0097] As a non-limiting example, the overlap length 690 between the first blade 12A and the second blade 12B of an exemplary shaving cartridge can be in the range of 0 mm to 0.55 mm. For example, Figure 2A The particular shaving cartridge 11 shown in

[0098] The shaving cartridge 11 has an interblade gap 605, which is the perpendicular distance from a plane 17 containing the cutting edge 18B of the second blade 12B to the cutting edge 18A of the cutting element 14A of the first blade 12A. The plane 17 is generally parallel to the surface of the cutting edge portion 16B of the second blade 12B that is arranged toward and away from the skin during shaving. As Figure 2A shown, the plane 17 can even correspond to the central plane of the cutting edge portion.

[0099] ​The plane 17 and the shaving surface 606 form an angle 625 whose normal extends from the cutting edge 18B of the second blade 12B towards the first blade 12A. The blade gap 605 corresponds to the product of the interblade span 602 and the sine of the angle 625 between the plane 17 and the shaving surface 606.

[0100] The shaving head 11 has a cutting element gap 607 which is the perpendicular distance between the interface surface 410A of the first blade 12A and the surface of the cutting edge portion 16B of the second blade 12B which is disposed towards the skin during shaving. The cutting element gap 607 can be measured as the blade gap 606 minus the sum of the perpendicular distance between the cutting edge 18B of the second blade 12B to the surface of the cutting edge portion 16B of the second blade 12B which is disposed towards the skin during shaving and the perpendicular distance between the cutting edge 18A of the first blade 12A to the interface surface 410A. When these distances are equal, the cutting element gap 607 can be measured as the blade gap 605 minus the thickness of the cutting element 14A of the first blade.

[0101] Figure 3 The first reference blade 112A and the second reference blade 112B are shown Figure 1A The first reference blade 112A and the second reference blade 112B are shown Figure 2AComparison between the first exemplary blade 12A and the reference blade 112A is shown. To facilitate comparison, the support 130A of the reference blade 112A is shown as being bent from a flat wire blank having a width (measured perpendicular to the bending axis and across the end of the blank, which end then corresponds to the end of the base portion and the platform portion of the support 130A) of 2.58 mm along the bending axis, while the support 30A of the exemplary blade 12A is shown as being bent from a flat wire blank having a width (measured perpendicular to the bending axis and across the end of the blank, which end then corresponds to the end of the base portion and the platform portion of the support 30A) of 1.84 mm to 2.76 mm or even 2.30 mm along the bending axis. To facilitate comparison, the first reference blade 112A and the first exemplary blade 12A are shown as being identical to each other in terms of their cutting elements 14A, 114A, blade length 621A, 721A, thickness 726A, 626A, 722A, 622A of their base portions 140A, 40A and platform portions 132A, 32A of their supports, and geometry of the juncture of their base portions 140A, 40A and platform portions 132A, 32A of their supports. The comparison between the first reference blade 112A and the first exemplary blade 12A shows that, despite these similarities, the base portion length 628A of the first exemplary blade 12A is 0.08 mm shorter than the base portion length 728A of the first reference blade 112A, and the platform portion length 620A of the first exemplary blade 12A is 0.2 mm shorter than the platform portion length 720A of the first reference blade 112A.

[0102] The reduction in base portion length 628A and platform portion length 620A, which is not limited to the particular dimensions described above, can result in a reduction in the amount of material included in the exemplary shaving razor head relative to the reference shaving razor head. This can result in, for example, cost reduction and / or environmental impact during manufacturing. Manufacturing will be discussed in more detail with reference to Figure 6 Manufacturing is discussed in more detail.

[0103] The "support ratio" of a blade 12A, 112A is the ratio of its platform portion length 620A, 720A to the length of the blade. When a shaving razor head includes a leading blade and a trailing blade, the edges of which simultaneously contact the skin during shaving such that the edge of the trailing blade trails the edge of the leading blade during movement of the shaving razor head in the shaving direction, for a given interblade span and a given leading blade, a trailing blade having a relatively large support ratio can correspond to a smaller interblade gap than a trailing blade having a relatively small support ratio.

[0104] As a non-limiting example, the first exemplary blade 12A can have a support ratio in the range of 0.33 to 0.64. For example, Figure 3The particular first exemplary blade 12A shown can have a support ratio of 0.56.

[0105] As an example, for two blades 12A, 112A whose cutting elements 14A, 114A are identical but whose support ratios are different, the blade 12A with the smaller support ratio can exhibit a greater ability to accumulate shaving debris (also referred to as “debris build-up”) than the blade 112A with the larger support ratio.

[0106] For example, Figure 4 The debris build-up of the reference blade 112A shown in Figure 3 The debris build-up of the exemplary blade 12A’ shown in Figure 5 The debris build-up of the exemplary blade 12A’ shown in Figure 5 The blade 12A’ shown in Figure 3 The exemplary blade 12A shown in differs only in that, Figure 3 The blade 12A in has a groove in the curved portion 50A of its support 30A, whereas Figure 5 The blade 12A’ in lacks such a groove in the curved portion of its support. However, Figure 5 The base portion length and platform portion length 628A’, 620A’ of the blade 12A’ in are the same as Figure 3 The base portion length and platform portion length of the blade 12A in are the same as Figure 5 The inner vertex 430A’ of the exemplary blade 12A’ in is positioned relative to the inner surfaces 36A’, 42A’ of the platform portion 32A’ and base portion 40A’ in the same manner as Figure 2B The inner vertex 430A’ of the exemplary blade 12A’ in is positioned relative to the inner surfaces 36A’, 42A’ of the platform portion 32A’ and base portion 40A’ in the same manner as Figure 6 The curved portions with and without notches will be discussed in more detail.

[0107] Since the exemplary blade 12A’ and the reference blade 112A have cutting elements 114A, 14A’ that are identical to each other, the differences in the lengths of the base portions 40A’, 140A and platform portions 32A’, 132A of their respective supports 30A’, 130A discussed above mean that Figure 5 The exemplary blade 12A’ shown (as well as Figure 3 The exemplary blade 12A shown) has a smaller support ratio than Figure 4 The reference blade 112A shown.

[0108] In Figure 4 and Figure 5 The shaving debris is represented as a particle “P” that is substantially circular when viewed along the cutting edge 118A, 18A’ of the blade 112A, 12A’. Figure 4 and Figure 5A comparison of the exemplary blade 12A' and the reference blade 112A shows that the exemplary blade 12A' is capable of accumulating more particles of debris "P" between its cutting edge 18A' and its platform portion 32A' than the reference blade 112A is capable of accumulating between its cutting edge 118A and its platform portion 132A. Thus, the exemplary blade 12A' exhibits better accumulation of debris than the reference blade 112A. The same applies to the exemplary blade 12A in Figure 3

[0109] A blade that exhibits a relatively greater accumulation of debris can shave a greater area of skin before requiring rinsing than a blade that exhibits a relatively lesser accumulation of debris. Thus, a user of a shaving head that includes at least one blade that exhibits a good accumulation of debris can find that the shaving head requires rinsing less often than a similar shaving head whose blades exhibit a lesser accumulation of debris.

[0110] A blade that has a relatively lower support ratio can also exhibit greater flexibility in its cutting edge portion than a blade that has the same cutting edge portion but a relatively higher support ratio. If used in conjunction with a vibrator, the flexibility of the cutting edge portion can facilitate removal of debris, and / or can exhibit greater oscillation of the vibrations. This possibility will be discussed in more detail with reference to Figure 11

[0111] Figure 6 A process flow diagram is shown for manufacturing the S100 exemplary shaving head. The method S100 includes providing a first blade S10A, providing a second blade S10B, and assembling the first and second blades together S40.

[0112] Providing the first blade S10A can include providing a support thereof S11A, providing a cutting element thereof S19A, and assembling the support and the cutting element together S30A to obtain the blade.

[0113] Providing the support S11A can include providing a flat element S12A and bending the flat element S18A to obtain the support. As a non-limiting example, the flat element 52A can have a width 632A of 2.30 mm, measured perpendicular to the axis along which the bending S18A occurs, between portions of the flat element that subsequently correspond to the base portion and the platform portion of the support.

[0114] ​​Providing the flat element S12A can include providing a raw material wire (e.g., from 4 mm to 6.5 mm, or even 5 mm in diameter) that is drawn (i.e., rolled (hot or cold) and / or polished and / or cut and / or annealed processes (to increase ductility)) to produce the flat element 52A. The flat or flattened wire can be made of stainless steel, such as austenitic stainless steel, and / or can have a width of 2 mm to 3 mm, or even 2.2 mm to 2.4 mm. The ends of the flat element can be rounded.

[0115] Bending the flat element S18A forms the base portion 40A and the platform portion 32A of the support, and a bend portion 50A that interconnects the base portion 40A and the platform portion 32A, such that the base portion 40A and the platform portion 32A are perpendicular or oblique to each other at least at their respective junctions with the bend portion 50A. It is contemplated that the bend portion 50A can include a groove 54A, which can enable the bend portion 50A to have a relatively small bend radius or no bend radius, or the bend portion 50A can be grooveless, such that bending is performed without a groove forming step. For example, the groove 54A can be located between surface portions of the flat element that later correspond to interior surfaces of the base portion 40A and the platform portion 32A of the support.

[0116] When a groove 54A is to be provided, the flat element 52A can undergo groove forming S14A prior to bending S18A. For example, the groove forming S14A can create one or more grooves 54A in the flat element 52A, which can locally increase the susceptibility of the flat element to bending S18A. For example, the groove forming S14A can be performed by rollers (e.g., as described in U.S. Patent No. 9,289,909) and / or by material removal. As a result, a support 30A obtained from a flat element 52A that has undergone groove forming S14A can have a bend portion 50A that is smaller and / or a bend radius of its bend portion that is smaller than a support obtained from a flat element of the same size that has not undergone groove forming. Providing the flat element S12A can additionally include straightening S15A the flat element after forming the groove 54A.

[0117] Alternatively, the flat element can be subjected to slitting S16A prior to bending. For example, slitting can facilitate cutting the flat element to length. For example, slitting can be performed as described in U.S. Patent No. 9,289,909.

[0118] Bending flat elements S18A converts the flat elements into curved elements. After bending, the curved elements can be cut to length to produce supports. Assembling the cut elements and the supports together S30A can include mounting S34A the cut elements 14A on the supports 30A. Mounting the cut elements on the supports S34A can be performed by welding the mounting portions 20A of the cut elements to the platform portions 32A of the supports, by way of non-limiting example.

[0119] Prior to mounting the elements on the supports S34A, the cut elements 14A and the supports 30A can undergo positioning S32A to position the mounting portions 20A on the platform portions 32A.

[0120] The cut elements 14A can be provided as part of the material 60A, and can be trimmed S36A to remove the cut elements 14A from their surroundings. The trimming S36A can be performed after mounting S34A, by way of non-limiting example.

[0121] Providing the first blade S10A can lack a step of removing material from the platform portions 32A of the supports 30A after bending S18A. Providing the first blade S10A can also lack a step of removing material from the base portions 40A of the supports 30A after bending S18A, or can even lack a step of removing material from the supports 30A after bending S18A. Avoiding material removal can reduce raw material usage during manufacturing, and can also reduce waste generation during manufacturing.

[0122] Providing the second blade S10B can be performed in the same manner as providing the first blade S10A, by way of non-limiting example.

[0123] Assembling the first and second blades together S40 can be performed by providing a shroud and retaining both the first blade 12A and the second blade 12B into the shroud. The first blade 12A and the second blade 12B can undergo stacking S42 to provide a stack of blades, and then the blades can be substantially simultaneously retained into the shroud S44, by way of non-limiting example. Alternatively, two directly adjacent blades can be retained one after the other. For example, the first blade 12A can be retained S44A into the shroud after the second blade has been retained S44B into the shroud.

[0124] Measuring flushability S50 of the shaving head can also be considered. Measuring flushability S50 can be performed during manufacturing S100, by way of non-limiting example.

[0125] Figure 7A A process flow diagram of an exemplary process method for measuring flushability S50 of the shaving head is shown.

[0126] Measuring the rinsability S50 of the shaving head comprises mounting S52 the shaving head downstream of the liquid dispenser and upstream of a first flow path and a second flow path separate from the first flow path, such that liquid dispensed from the liquid dispenser is conveyed to the shaving head and such that liquid passing through the shaving head is directed along the first flow path and such that liquid bypassing the shaving head is directed along the second flow path. In this way, liquid passing through the shaving head can be kept separate from liquid bypassing the shaving head. Since liquid passing through the shaving head is considered to contribute more to the removal of debris that can accumulate in the shaving head than liquid bypassing the shaving head, separating the two can quantify the proportion of liquid used during rinsing, which easily influences the debris removal effect.

[0127] The process method S50 comprises dispensing liquid S56 from the liquid dispenser and measuring the amount of liquid directed along the first flow path S60 and / or the amount of liquid directed along the second flow path. Thus, it can be determined how much of the dispensed liquid will contribute and / or will not contribute to the removal of debris.

[0128] As a non-limiting example, the process method S50 can comprise collecting liquid directed along the first flow path S58A and / or collecting liquid directed along the second flow path S58B. Collecting liquid directed along a given flow path can allow measuring the amount of liquid after dispensing has stopped.

[0129] The process method S50 can comprise arranging a gasket S54 between the shaving head and the boundary of the first flow path. The gasket S54 can be arranged before dispensing liquid S56. The gasket helps to prevent leakage between the shaving head and the boundary of the first flow path.

[0130] A known amount of liquid can be dispensed from the liquid dispenser. Providing a known amount of liquid can enable examination and comparison of different rinsing techniques. Thus, it can be determined whether a user of a given shaving head can obtain an improved rinsing by using a particular rinsing technique.

[0131] The known amount can be dispensed according to a predetermined flow profile, which can be constant or time-varying. The predetermined flow profile can serve as a standardized representation of the rinsing behavior. The standardized representation of the rinsing behavior can enable direct comparison of the rinsability of shaving heads.

[0132] Figure 7B A schematic view of an apparatus 80 for measuring the rinsability of a shaving head 9 is shown. The apparatus 80 comprises a liquid dispenser 81, a first flow path 84A, and a second flow path 84B separate from the first flow path 84A.

[0133] The liquid dispenser 81 can be provided as a reservoir of known geometry. For example, the reservoir can be substantially cylindrical in shape, with its axis oriented substantially vertically, and with a known diameter. A dispensing aperture 82 can be provided at a lower axial surface 83 of the reservoir, from which the liquid 88 dispensed by the liquid dispenser 81 flows towards the shaving head 9. The reservoir can be configured to dispense a known quantity of liquid, for example two litres of water. Other quantities and / or other liquids can also be considered.

[0134] Alternatively, the liquid dispenser 81 can be configured to provide a constant flow of water, for example the liquid dispenser 81 can be configured to dispense 92ml (millilitres) of water (or other liquid) per second over a period of five seconds. Other flow rates and / or other durations can also be considered.

[0135] The inlet 85A of the first flow path 84A can be arranged coaxially with the dispensing path along which the liquid 88 from the liquid dispenser 81 exits the dispensing aperture 82. The inlet 85B of the second flow path 84B can be arranged around (or even coaxially with) the inlet 85A of the first flow path 84A.

[0136] A support 89 is located at the inlet 85A of the first flow path 84A. The support 89 is used to hold the shaving head 9 such that the shaving head 9 is located between the dispensing aperture 82 and the inlets 85A, 85B of the first and second flow paths 84A, 84B.

[0137] The support 89 comprises an opening 90 and a flange 91. The flange 91 extends from the opening 90 to the boundary 86A of the first flow path 84A. The liquid 88 dispensed by the liquid dispenser 81 can pass into the first flow path 84A by passing through the opening 90, and can bypass the support 89 into the second flow path 84B. The flange 91 can even be sealed to the boundary 86A of the first flow path 84A.

[0138] The support 89 is used to hold the shaving head 9 such that the blades of the shaving head 9 are arranged between the opening 90 and the dispensing aperture 82. In this way, the liquid 88A passing through the blades of the shaving head 9 is generally able to enter the first flow path 84A via the opening 90.

[0139] The dispensing aperture 82 can be oriented such that the dispensing path is vertically downward. The inlets 85A, 85B of the first and second flow paths 84A, 84B can be vertically located below the dispensing aperture 82. For example, the dispensing aperture 82 can be arranged vertically above the shaving head 9 by approximately 15cm (centimetres) when the shaving head 9 is mounted to the support 89. Other distances can also be considered.

[0140] The first flow path 84A terminates at a volumetric meter 87A, which collects and measures the amount of liquid 88A guided along the first flow path 84A. This measurement can be used as an indication of the amount of liquid 88 dispensed, which can help remove debris from the shaver head 9. For example, the volumetric meter 87A can be the entire first flow path 84A.

[0141] When it is necessary to measure the amount of liquid 88A, 88B guided along the first flow path 84A and the second flow path 84B, the second flow path 84B may terminate at the second volumetric ...

[0142] Figure 8 It shows Figure 7B A detailed view of the device is shown, as seen along the dispensing path toward the support 89. A gasket 92 is arranged between the support 89 and the guard 10 of the shaver head 9, such that the opening 90 is sealed, except for the space between the blades 12A and 12B of the shaver head 9. Therefore, liquid bypassing the shaver head 9 (rather than traversing it) is prevented from entering the first flow path 84A, but can instead be guided along the second flow path 84B, for example, into the second volumetric container 87B.

[0143] Liquid can be dispensed from the liquid dispenser and delivered only to a portion of the shaver head 9. For example, the dispensed liquid can be provided in the form of a stream whose cross-section (as seen perpendicular to the dispensing path) is substantially circular, with a diameter ranging from approximately 5 cm to 2 cm. Such a stream could represent a flow of water from a typical bathroom faucet. It is also possible to aerate the dispensed liquid. For example, the dispensed liquid can be delivered to an impact zone 93, which is substantially circular in shape when viewed along the dispensing path. For example, the impact zone 93 could be located at the midpoint between the midpoints of the directly adjacent cutting edges 18A, 18B of the shaver head 9.

[0144] Figure 9 It shows Figure 1A A schematic diagram of the reference blade assembly 111 during rinsing. Figure 10 It shows Figure 2A A schematic diagram of the blade assembly 11 during rinsing. For ease of comparison, Figures 9-10 The shaving heads of the blade assemblies 111 and 11 shown have the same shrouds and dispense 460 ml of water to each shaving head at a rate of 92 ml / s for 5 seconds, have the same flow geometry, and each shaving head has undergone five tests. Figures 9-10comparisons show that, although the two shaving heads are comparable in their water passage capabilities between the cutting edges 118A, 18A, 118B, 18B of their respective first blades 112A, 12A and second blades 112B, 12B, due to their identical inter-blade span 702, 602 (1.3 mm), due to the different inter-blade gaps 704, 604 of the two shaving heads, significantly less water is able to pass through Figure 10 the exemplary shaving head of the shaving head arrangement 11 shown in Figure 9 the reference shaving head of the reference shaving head arrangement 111 shown in

[0145] On average, 149 ml were observed to pass through the reference shaving head having an inter-blade gap 704 of 0.29 mm, while 212 ml were observed to pass through the exemplary shaving head having an inter-blade gap 604 of 0.42 mm. Thus, the tests support the understanding that an increased inter-blade gap corresponds to an increased washability.

[0146] Figure 11 An exemplary shaving razor 6 comprising an exemplary shaving head 9 is shown. As a non-limiting example, the exemplary shaving head 9 of the exemplary shaving razor can be a shaving head whose blade arrangement is, for example, the shaving head arrangement 11 shown in Figure 2A The first blade 12A and the second blade 12B are held within the guard 10 of the shaving head 9.

[0147] The shaving head 9 of the shaving razor shown is attached to the handling portion 8 of the shaving razor 6, in this case a handle. The shaving head 9 and the handling portion 8 can be detachably attached to each other or permanently attached to each other.

[0148] The shaving razor 6 can comprise one or more vibrators 7. As a non-limiting example, the one or more vibrators 7 can be provided in the shaving head 9 and / or the handling portion 8. The one or more vibrators 7 can transmit vibrations to the skin through the shaving head 9, for example through the blades 12A, 12B of the shaving head 9.

[0149] While the described embodiments are provided as different exemplary embodiments, it is conceivable that the embodiments are combinable, or that features recited in the described embodiments are interchangeable when not in conflict. Furthermore, features recited in the described embodiments are not inseparably linked to each other unless such a connection between two given features is explicitly indicated.

[0150] Throughout the specification, unless otherwise indicated, the term "comprising" is to be understood in its "open" sense, that is, in the sense of "including but not limited to." Also, any ranges of values stated in this document are to be understood to include the values that fall within the range, unless otherwise indicated. The specific values of the recited elements are to be understood as within acceptable manufacturing or industry tolerances known to those skilled in the art, and any use of the terms "substantially," "approximately," and / or "generally" is to be understood as meaning within such acceptable tolerances.

[0151] Although the present disclosure has been described herein with reference to particular embodiments thereof, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present disclosure.

[0152] It is intended that the specification and examples be considered exemplary only, with the true scope of the disclosure being indicated by the appended claims.

Claims

1. A shaving head (9) comprising a guard (10), a first blade (12A) and a second blade (12B), the first blade comprising a first cutting element (14A) and a support (30A), the first cutting element comprising a cutting edge portion (16A) having a cutting edge (18A) and a mounting portion (20A) extending from the cutting edge portion in a direction opposite to the cutting edge, the mounting portion being mounted on the support, the second blade comprising a second cutting element (14B) having a cutting edge (18B), the first blade and the second blade being arranged directly adjacent to each other such that the cutting edge (18A) of the first cutting element and the cutting edge (18B) of the second cutting element are substantially parallel to each other and arranged to contact the skin simultaneously during shaving, and such that an inter-blade gap (604) between the first blade (12A) and the second blade (12B) is in the range of 0.25 mm to 0.55 mm, the inter-blade gap being the smallest distance between directly adjacent blades, and such that an inter-blade span (602) between the first cutting element and the second cutting element is in the range of 0.90 mm to 1.60 mm, the inter-blade span being the distance between two directly adjacent cutting edges, wherein an overhang length (612A) of the first blade (12A) is in the range of 0.55 mm to 1 mm, the overhang length (612A) being the smallest distance from the cutting edge of the cutting edge portion of the cutting element of a blade or its orthogonal projection (412A) on an interface surface (410A) when the cutting edge does not coincide with a mounting surface (22A) to a portion of the mounting surface (22A) in contact with the support (30A), wherein the mounting surface (22A) is a surface of the mounting portion (20A) facing the support (30A), the interface surface (410A) being a surface defined between the first cutting element (14A) and the support (30A) when they are mounted to each other.

2. The shaving head (9) according to claim 1, wherein the overhang length (612A) of the first blade (12A) is in the range of 0.55 mm to 0.88 mm.

3. The shaving head (9) according to any one of claims 1 to 2, wherein the support (30A) comprises: a platform portion (32A), the mounting portion (20A) being mounted on the platform portion such that the platform portion extends along the mounting portion; and a base portion (40A) extending obliquely or perpendicularly from the platform portion for assembling the first blade (12A) to the guard (10), a thickness (626A) of the base portion being in the range of 0.1 mm to 0.3 mm, the thickness being measured in a way normal to an inner surface (42A) of the base portion.

4. The shaving head (9) according to any one of claims 1 to 2, wherein the support (30A) comprises: a platform portion (32A), the mounting portion (20A) being mounted on the platform portion such that the platform portion extends along the mounting portion; and a base portion (40A) extending obliquely or perpendicularly from the platform portion for assembling the first blade (12A) to the guard (10), a thickness (626A) of the base portion being in the range of 0.1 mm to 0.3 mm, the thickness being measured in a way normal to an inner surface (42A) of the base portion. and a base portion (40A) extending obliquely or perpendicularly from the platform portion for assembling the first blade (12A) onto the second blade (12B), an outer surface (44A) of the base portion being arranged away from the platform portion, a length (620A, 620A') of the platform portion being in a range of 0.5mm to 0.9mm, the length of the platform portion being measured along the mounting portion from an inner vertex (430A) formed by surfaces (32A, 42A) of the platform portion (32A) and the base portion (40A) facing each other towards the cutting edge (18A) of the cutting edge portion (16A).

5. The shaving head (9) according to any one of claims 1 to 2, wherein the support (30A) comprises: a platform portion (32A) on which the mounting portion (20A) is mounted such that the platform portion extends along the mounting portion; and a base portion (40A) extending obliquely or perpendicularly from the platform portion for assembling the first blade (12A) onto the second blade (12B), a ratio of a length (620A, 620A') of the platform portion to a length (621A, 621A') of the first blade being in a range of 0.33 to 0.64, the length of the platform portion being measured along the mounting portion from an inner vertex (430A) formed by surfaces (34A, 42A) of the platform portion (32A) and the base portion (40A) facing each other towards a cutting edge of the cutting edge portion (16A), and the length of the first blade being measured along the mounting portion from the inner vertex to the cutting edge (18A).

6. The shaving head (9) according to any one of claims 1 to 2, wherein the support (30A) comprises: a platform portion (32A) on which the mounting portion (20A) is mounted such that the platform portion extends along the mounting portion; and a base portion (40A) extending obliquely or perpendicularly from the platform portion for assembling the first blade (12A) onto the second blade (12B), an outer surface (44A) of the base portion being arranged away from the platform portion, a length (620A, 620A') of the platform portion being in a range of 0.5mm to 0.9mm, the length of the platform portion being measured along the mounting portion from an inner vertex (430A) formed by surfaces (32A, 42A) of the platform portion (32A) and the base portion (40A) facing each other towards the cutting edge (18A) of the cutting edge portion (16A).

7. The shaving head (9) according to claim 6, wherein an overlap length (690) between the first blade (12A) and the second blade (12B) is in a range of 0mm to 0.55mm.

8. The shaving head (9) according to any one of claims 1 to 2, wherein the first blade (12A) and the second blade (12B) are arranged directly adjacent to each other such that the support (30A) of the first blade (12A) is located in between the first cutting element (14A) and the second blade (12B), or such that the first cutting element (14A) is located in between the support (30A) of the first blade (12A) and the second blade (12B).

9. The shaving head (9) according to claim 8, wherein the first cutting element (14A) is arranged on a surface of the support (30A) of the first blade (12A) which is arranged towards the skin during shaving.

10. The shaving head (9) according to claim 8, wherein the first cutting element (14A) is arranged on a surface of the support (30A) of the first blade (12A) which is arranged away from the skin during shaving.

11. A shaver (6) comprising the shaving head (9) according to any one of claims 1 to 10.

12. The shaver (6) according to claim 11, comprising a vibrator (7).

13. A method of manufacturing the shaving head (9) according to any one of claims 1 to 10, the method comprising providing the first blade (12A) and providing the second blade (12B), and assembling the first blade (12A) and the second blade (12B) together.

14. The method according to claim 13, wherein providing the first blade (12A) comprises providing the first cutting element (14A) and providing the support (30A), and providing the support comprises providing a flat element (52A) and bending the flat element to obtain the support, the support comprising: a base portion (40A) for assembling the first blade onto the second blade (12B); and a platform portion (32A) to which the first cutting element (14A) can be mounted, the platform portion extending obliquely or perpendicularly from the base portion, and wherein providing the first blade does not require a step of removing material from the platform portion of the support after a bending step.

15. The method according to claim 13, further comprising a step of measuring the flushability of the shaving head (9).

16. The shaving head (9) according to any one of claims 1 to 10, wherein the first cutting element (14A) is arranged on a surface of the support (30A) of the first blade (12A) which is arranged towards the skin during shaving.

17. The shaving head (9) according to any one of claims 1 to 10, wherein the first cutting element (14A) is arranged on a surface of the support (30A) of the first blade (12A) which is arranged away from the skin during shaving.

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