• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    SUMMARY FIXED BLADE FOR A BLADE SET OF AN APPLIANCE TO CUT ELECTRICALLY OPERATED HAIR; BLADE SET; HAIR CUTTING APPLIANCE; AND FIXED BLADE MANUFACTURING METHOD A fixed blade (10) for a blade set (4) of a hair clipper (1), including a first wall (20) and a second wall (30), each wall defining a first surface (22a, 32a), a second surface (22b, 32b) opposite the first surface, and a laterally extending front edge (23, 33) defining a plurality of projections that extend longitudinally separated laterally (24, 34) , in which the first surfaces of the first and second walls are opposite each other, at least at their front edges (23, 33), while opposing the projections along the front edges of the first and second wall are mutually connected at their ends (26 , 36) to define a plurality of teeth generally U-shaped (12), and the first surfaces of the first and second wall define a laterally extending direction groove (16) for a movable blade (40) of said set of lami in between them. 1/1
    公开号:BR112014024327B1
    申请号:R112014024327-1
    申请日:2013-03-26
    公开日:2020-07-28
    发明作者:Martinus Bernardus Stapelbroek；Jan Van Dalen
    申请人:Koninklijke Philips N.V；
    IPC主号:
    专利说明:

    FIELD OF THE INVENTION
    [001] The present invention relates to an electrically operated hair clipper, and more particularly to a blade set, including both a fixed blade and a movable blade, for such an apparatus. The present invention also relates to a method for making the blade assembly, in particular the fixed blade thereof. HISTORY OF THE INVENTION
    [002] For the purpose of cutting body hair, there are two normally distinct types of electrically powered appliances: the shaver, and the hair trimmer or clipper. Where the shaver is used to shave, that is, cut the hair at the level of the skin in order to obtain a smooth skin without beard remnants, the hair trimmer is used to trim the hair at a chosen distance from the skin, ie is, to cut the hair to a desired length. The difference in application is reflected by the different architectures of the cutting blade arrangement implemented in both devices.
    [003] An electric shaver typically includes a laminated film, that is, an ultra-thin perforated screen, and a cutting blade that is movable along the inside of the laminated film. During use, the outer side of the laminated film is placed against the skin, so that any hair that penetrates the laminated film is cut by the cutting blade that moves against the inner side of the film and falls into the hollow parts of hair collection inside the skin. shaver. An electric trimmer, on the other hand, typically includes two generally flat cutting blades with a serrated edge, one placed over the other so that the serrated edges overlap. In operation, the cutting blades alternate, cutting whatever is stuck between your teeth in a scissor cut action. The precise level above the skin at which the hair is cut is usually determined by means of an accessory, called a protective (spacer) or comb. SUMMARY OF THE INVENTION
    [004] Unfortunately, electric shavers are not suitable for cutting hair to a desirable variable length above the skin. This is partly due to the fact that they do not include a mechanism for separating the laminated film from the skin. But even if they did, the configuration of the laminated film, which typically involves a large number of tiny closed circumferential perforations, would frustrate the efficient capture of the shorter and stiffer hairs. Similarly, hair clippers are not suitable for shaving, mainly because the separate cutting blades require some rigidity, and therefore thickness, to perform the scissor cutting action without deformation. It is the minimum necessary blade thickness that prevents the hair from being cut close to the skin. Consequently, a user wishing to both shave and trim their hair may need to use two devices.
    [005] An example of a conventional hair trimmer can be found in patent document DE 2 026 509. The cutting head disclosed in DE'509 includes a tube-shaped compartment with a protrusion that extends externally precisely including teeth, and a movable U-shaped blade having at least one leg pivoted outwardly provided with a serrated edge. The movable blade is received inside the folded protrusion to alternate the linear movement in it. Both fixed and movable blades can be made of thin rolled steel which makes them fragile. To reinforce the blades, the document DE'509 seems to suggest the use of reinforcement connectors articulated between the ends of a respective blade.
    [006] It is an objective of the present invention to provide a robust and alternative blade set, and in particular, a fixed blade of this, which allows both shaving and trimming.
    [007] For this purpose, a first aspect of the present invention is directed to a fixed blade for a set of blades of an electrically operated hair clipper. The fixed blade can include a first wall and a second wall. Each wall can define a first surface, a second surface facing the first surface and a front edge (toothed, comb-like) that extends laterally, defining a plurality of projections, which extends longitudinally apart. The first surfaces of the first and second wall can be arranged, facing each other, at least on the two front edges, while facing the projections along the front edges of the first and second wall can be mutually connected at their ends to define a plurality of teeth generally U-shaped, so that the first surfaces of the first and second walls define a directional groove that extends laterally towards a movable blade of said set of blades between them. The projections of the first wall can have a measured thickness that is less than an average thickness of the projections (34) of the second wall (30).
    [008] The fixed blade now revealed can be essentially U-shaped, having a first contact wall with the skin and a second supporting wall. The walls can extend opposite and generally parallel to each other, and be connected to each other along a front edge under the formation of a series of teeth, separated in a U-shape (that is, with double walls). The general U shape of the fixed blade, and more particularly the U shape of the teeth, reinforces the structure of the fixed blade. The fact that the projections of the second support wall have an average thickness greater than the projections of the first wall, further reinforces the fixed blade. In particular, the structural strength of the teeth is improved compared to a conventional simple flat cutting blade of a hair trimmer. This allows the first skin contact wall of the fixed blade according to the present invention, to be made significantly thinner than the cutting blades of the conventional hair trimmer, in fact so thin, that its thickness can approach that of a laminated film of the shaver. At the same time, the fixed blade retains the open circumference spacing between the teeth, which allows it to effectively capture the longest hairs. The fixed blade thus offers the best of two different cutting blade architectures found in shavers and hair trimmers, and thus allows the construction of a set of blades suitable for both shaving and trimming.
    [009] An average thickness of the second wall can preferably be greater than 100 pm, for example, be in the range of 100 pm -200 pm. In a preferred embodiment, the ratio between an average wall / thickness of the projections of the second wall and an average wall / thickness of the projections of the first wall can be at least 3: 2, and more preferably 2: 1.
    [010] Regarding the geometry of the fixed blade and the terminology used in this text to describe it, the following can be seen. Different realizations of the fixed blade can have different geometries. In one embodiment, for example, the fixed blade may have linear geometry (see Figs. 1-8). In such an embodiment, the 'laterally extending targeting groove' can extend linearly, while the 'longitudinally extending projections' provided along the linear front edges of the first and second wall of the fixed blade can extend substantially in parallel and perpendicular to the linear edges. In an alternative embodiment, the fixed blade may have a curved, in particular, circular geometry (see Figs. 9-10). In such an embodiment, the 'laterally extending targeting groove' can extend tangentially around a central axis along an elliptically curved path, in particular circularly, while the adjacent 'longitudinally extending projections' provided along the circularly curved front edges of the first and second wall of the fixed blade can extend in a radial direction in relation to the central axis (thus not being mutually parallel). In this way, the term 'lateral' should not be constructed to relate to linear geometry only; in circular geometry, for example, the term can be synonymous with the term 'tangential'. The term 'longitudinal' can generally refer to a direction perpendicular to a lateral direction; in the case of circular geometry, the term can thus be synonymous with the term 'radial'.
    [011] In an embodiment of the fixed blade, the first wall, or at least the projections of it, can have an average thickness less than 200 pm, and preferably less than 100 pm. The finer the projections of the first skin contact wall, the closer to a user's skin they can shave it.
    [012] In another embodiment, the first wall, or at least the part of it defining its projections, can be substantially flat, so that all the projections of the first wall extend substantially on the same plane. This can allow the front of the first wall to be placed against particularly large parts of the skin, optimizing the area in which the hair can be cut. In an alternative embodiment, the first wall or at least part of it defining its projections can be convexly curved as seen in a plane in cross section perpendicular to the lateral direction. During use, when the second skin contact surface is pressed against the flexible skin, the convex curvature of the second surface of the first wall can provide a more equal and therefore more comfortable pressure distribution across the skin than a second flat surface. This is partly due to the convex curvature preventing the high levels of skin deformation at the circumferential edge of the first wall as it avoids the need for the skin to round out from this edge.
    [013] As the first and second walls themselves can be relatively thin, and the spacing between them can be relatively small, the teeth along the front edge of the fixed blade can be perceived as sharp. To prevent cutting of the skin, the teeth in an embodiment of the fixed blade can be provided with a rounded or convexly curved tip, as seen in a longitudinal cross-section. A minimum radius of curvature of the tip of a tooth can preferably be about 0.3 mm.
    [014] In an embodiment of the fixed blade, the effective structural force of the blade, including its teeth, can be increased by mutually connecting the first and the second wall by means of at least one discrete connecting part, which extends between its first opposite surfaces . The connector part can act both as a spacer that prevents the first wall from being pushed against the second wall, and as an anchor that prevents the first wall from moving or and deforms in relation to the second wall in the lateral and / or longitudinal direction .
    [015] In another embodiment, an overall average thickness of the fixed blade measured between the second surfaces of the first and second walls in its projections may preferably be less than 1 mm, and more preferably less than 0.6 mm. A small overall thickness helps to ensure hair capture efficiency, particularly when trimming longer hair. More specifically, it ensures that a small contact area exists between the front edge of the fixed blade and its hair, which assists in the folding of hair between the U-shaped teeth separated laterally instead of pushing them away.
    [016] A second aspect of the present invention is directed to a blade set for a hair clipper. The blade assembly may include a fixed blade according to the first aspect of the present invention, and a movable blade with a toothed leading edge. The movable blade can be laterally movable arranged within the orientation groove defined by the fixed blade, so that, after the lateral alternation of the movable blade in relation to the fixed blade, the toothed front edge of the movable blade cooperates with the teeth of the fixed blade to allow the hair to be cut between them in a scissor cut action.
    [017] A third aspect of the present invention is directed to a hair clipper. The hair clipper may include a compartment that accommodates an electric motor. It can also include a blade assembly according to the second aspect of the present invention. The fixed blade of the blade assembly can be fixedly connected to the compartment, while the movable blade can be operationally connected to the electric motor, so that the motor is capable of laterally switching the movable blade within the fixed blade direction slot.
    [018] A fourth aspect of the present invention is directed to a method of making a fixed blade of a hair clipper. The method may include providing a first metal plate with a first front edge that extends laterally; providing a second metal plate having a second leading edge that extends laterally; and providing a metal strip having a lateral dimension that corresponds to that of the front edges of the first and second metal plate and a longitudinal dimension that is significantly smaller than the first and second metal plate. The first metal plate has an average thickness (ti) that is less than the average thickness (ts) of the second metal plate. The method may further include stacking the second metal plate on the first metal plate by arranging the metal strip between its front edges, so that a longitudinal cross-section of the stacked arrangement is generally U-shaped; fixing the stacked arrangement by welding the strip between the first and second front edges; and the creation of discrete U-shaped teeth forming a plurality of grooves laterally separated at the front edge of the arrangement, so that said grooves extend longitudinally beyond the strip. In this context, the term 'forming' is intended to be constructed widely, and can be considered to include any 'subtractive manufacturing process', such as, for example, grinding or EDM.
    [019] An advantage of the method according to the fourth aspect of the present invention is that it facilitates the manufacture of a fixed blade having first and second walls of a different (average) thickness. In addition, it conveniently allows the manufacture of fixed blades having a curved, for example, circular geometry. In this way, the manufacturing method according to the fourth aspect of the invention improves on an alternative manufacturing method involving the steps of providing a metal plate; marking a plurality of laterally separated grooves which extend substantially identical longitudinally on the plate; and folding the plate into a U-shape along a laterally extending fold line extending through said separate grooves. Although the latter method is well suited for the manufacture of a fixed blade including the first and second walls of equal thickness and having a linear geometry, it is less suitable for the manufacture of a fixed blade including the first and the second wall of a thickness different and practically unusable for the manufacture of a fixed blade having a curved geometry.
    [020] These and other aspects and advantages of the invention will be more fully understood from the detailed description of certain embodiments of the invention, taken with the accompanying drawings, which are intended to illustrate and not to limit the invention. BRIEF DESCRIPTION OF THE DRAWINGS
    [021] Fig. 1 is a schematic perspective view of an electric hair clipper suitable for an exemplary embodiment of a set of blades according to the present disclosure;
    [022] Fig. 2A is a top view schematic perspective of the blade set shown in Fig. 1, comprising a fixed blade and a movable blade;
    [023] Fig. 2B is a top view schematic perspective of the blade set in Fig. 2A, indicating hidden lines to illustrate the placement of the movable blade within the fixed blade direction slot;
    [024] Fig. 3 is a schematic top view of the fixed blade of the blade assembly shown in Fig. 2;
    [025] Fig. 4 is a top view schematic perspective of the movable blade, and a connector part of the fixed blade of the blade set shown in Fig. 2;
    [026] Fig. 5 is a top view of the blade assembly shown in Fig. 2;
    [027] Fig. 6 is a cross-sectional side view of the blade set shown in Fig. 2;
    [028] Fig. 7 is a schematic bottom view of an exemplary alternative embodiment of a fixed blade other than the fixed blade of the blade set of Figs. 1-7 in which it has longer U-shaped teeth and a first wall of contact with the skin convexly curved;
    [029] Fig. 8 is a schematic cross-sectional side view of a blade assembly including the alternative embodiment of the fixed blade shown in Fig. 7;
    [030] Fig. 9 is a schematic bottom view of an embodiment of a fixed blade having a circular geometry; and
    [031] Fig. 10 is a schematic perspective view in cross section of the fixed blade shown in Fig. 9. DETAILED DESCRIPTION
    [032] Fig. 1 schematically illustrates in perspective view an exemplary embodiment of an electric hair clipper 1 according to the present disclosure. The apparatus 1 may include a compartment 2, an electric battery, an electric motor, and a blade assembly 4. The compartment 2 can accommodate the electric battery and the electric motor, which can be operationally connected so that the motor is chargeable to from the battery. The blade assembly 4, which is shown in more detail in Figs. 2-6, may include a fixed blade 10 that is fixedly connected to compartment 2, and a movable blade 40 that is connected to the motor so that it is movable in a lateral alternating movement with respect to blade 10. In addition to the blade assembly 4, the hair clipper 1 can generally be known in the art.
    [033] For ease of reference, a Cartesian coordinate system is indicated in each of Figures 1-6. The x axis of the coordinate system extends in the longitudinal direction associated with length, the y axis extends in the lateral direction associated with width, and the z direction extends in the direction associated with height or thickness.
    [034] Referring now in particular to Figs. 2-6 illustrating the blade assembly 4 of Fig. 1 in several top perspective views, top orthogonal and side in cross section.
    [035] The fixed blade 10 of the blade assembly 4 can include a first wall 20 and a second wall 30. The walls 20, 30 can generally be of the plate type, but need not be. Each wall 20, 30 can define a first surface 22a, 32a, a second surface 22b, 32b opposite the first surface 22a, 32a and a laterally extending front edge 23, 33 defining a plurality of projections which generally extend longitudinally separated laterally 24, 34. The first and second wall 20, 30 can be arranged in a separate relationship, so that the first surfaces 22a, 32a are facing each other. The projections 24, 34 of the front edges of the first and second wall 20, 30 can preferably be in a one-to-one relationship, where each projection 24 of the plurality of projections of the first wall 20 is associated with a projection towards the other or opposite 34 of the plurality of projections on the second wall 30. The associated projections 24, 34 can be connected at their ends 26, 36, thus forming a plurality of teeth generally U-shaped that extend longitudinally separated laterally 12 (that is, with walls doubles). The first and second walls 20, 30, including the U-shaped teeth 12, define more specifically: the first internal surfaces 22a, 32a of the first and second wall 20, 30 including the first parts of the surface provided by the projections 24, 34 of these - they can define a directional groove that extends laterally 16 for the movable blade 40 of the set of blades 4 between them.
    [036] The first and second wall 20, 30 of the fixed blade 10 can have different functions. The first wall 20 can serve as a laminated film that, in operation, can be arranged between a user's skin and the movable blade 40, in order to prevent the former from direct contact with the latter. To allow the hairs to be cut at the skin level or very close to it, the first wall 20, or at least the part of it providing the projections 24, may preferably have the lowest practicable average thickness, which can be at least less than 100 pm. The purpose of the second wall 30 may be to provide the first ultra-thin wall 20 with sufficient stiffness against deformation during use. In addition to the structural support provided for the first wall through the plurality of U 12 tooth connections, two aspects are proposed to increase the effective structural strength of the fixed blade: connector parts 18 and a relatively thick second wall 30.
    [037] In one embodiment, the first and second wall 20, 30 can be mutually connected by means of at least one discrete connector part 18 which extends between their respective respective surfaces 22a, 32a. The connector part 18 can act on both as a spacer that prevents the first wall 20 from being pushed against the second wall 30, and as an anchor that prevents the first wall 20 from moving / reshaping from the second wall 30 in the lateral direction (y) and / or longitudinal (x). In principle, a connector part 18 can be arranged anywhere between the first surfaces 22a, 32a of the first and second wall 20, 30; however, it is preferable not to be arranged between the projections 24, 34 which define the U-shaped teeth 12. In one embodiment, a connector part 18 can be arranged at a side end of the direction groove 16, in order to prevent to interfere with the movable blade 40, which alternates laterally within that groove. In another embodiment, such as that shown in Figs. 1-6, a connector part 18 can be arranged in a position between the lateral ends of the guiding groove 16 and correspond to a cam or guiding groove 46 that extends laterally provided in the movable blade 40, so that the connector part 18 it can also serve as a guide meat for the movable blade 40.
    [038] In another embodiment, the first wall 20 can be effectively reinforced by providing the second wall 30, or at least its projections 34, with an average thickness t2 that is greater than an average thickness ti of the first wall 20, or at least the projections 24 of this. An average thickness ts of the second wall 30 can preferably be greater than 100 pm, for example, be in the range of 100 pm -200 pm. In a preferred embodiment, the ratio t2-t1 between an average wall thickness t2 of the second wall 30 and an average wall thickness t1 of the first wall 20 can be at least 3: 2, and more preferably 2: 1. It is explicitly realized that not all embodiments of the fixed blade now disclosed need to include a second wall 30, or second wall projections 34 having an average thickness ts that is greater than an average thickness ti of the first wall 20, or the first projections of the wall 24, although such achievements may not be covered by the attached claims. An overall average thickness or height of the fixed blade 10, and in particular the U-toothed leading edge, where the thickness or height is understood to be the distance between its second surfaces 22b, 32b, can preferably be less than about 1 mm. A small thickness helps to ensure proper hair capture efficiency, particularly when trimming longer hairs. More specifically, it ensures that a small area of contact exists between the front edge of the fixed blade and the hairs, which assists in folding the hairs between the U-shaped teeth separated laterally instead of pushing them away.
    [039] The second outer surface 22b of the first wall 20 can provide the skin contact surface of the fixed blade 10. In one embodiment, the first wall 20, or at least (in particular second surface 22b da) the part of this defining their projections 24, can be generally flat. See, for example, the realization of Figs. 1-6. In another embodiment, such as the embodiment shown in Figs. 7-8, the first wall 20, or at least (in particular second surface 22b da) the part thereof defining its projections 24, can be convexly curved. The convex curvature can be present in the longitudinal cross-sections of the first wall 20, that is, in the cross-sectional planes perpendicular to the lateral direction (y), but, alternatively or in addition to this, also in the lateral cross-sections of the first wall 20, i.e. that is, in cross-sectional planes perpendicular to the longitudinal direction (x). During use, when the second skin contact surface 22b is pressed against the flexible skin, a convex curvature of the second surface 22b of the first wall 20 provides a more equal and therefore more comfortable pressure distribution across the skin that a second flat surface. This is partly due to the convex curvature preventing the high levels of skin deformation at the circumferential edge of the first wall as it avoids the need for the skin to round out from this edge.
    [040] Regarding the shape and shape of the U-shaped teeth 12 of the fixed blade 10, the following can be seen. The projections opposite and connected by the tip 24, 34 of the first and second walls that define a certain U-shaped tooth 12 can preferably have the same length 1 and width w; as discussed above, their thicknesses ti, t2 may differ. In addition, the plurality of teeth 12 of the blade 10 can preferably be substantially identical, and be arranged so that its tips 14 are linearly aligned. The length 1 and width w of the teeth 12 can vary between different embodiments. The fixed blade 10 shown in the Figs. 1-6 embodiment, for example, has relatively short teeth 12, while the alternative embodiment shown in Figs. 7-8 has relatively long teeth 12. In preferred embodiments, the length 1 of the teeth 12 of the fixed blade can be in the range of 0.5 -5 mm. The width w of the individual teeth 12 can preferably be constant along their length, but need not be. In the preferred embodiments of the fixed blade, an average width w of the teeth 12 can be in the range of 0.1 -1 mm. The lateral spacing d between teeth 12 can preferably be in the range of 0.2 -1 mm. The tips 14 of the teeth 12 can preferably be curved convexly / rounded, as seen in a longitudinal cross-section, in order to avoid cutting the skin during use. The minimum radius of curvature of the tip can preferably be 0.3 mm. Other sharp edges of the teeth 12, for example, their longitudinally extending side edges may likewise be rounded.
    [041] Regarding the geometry of the fixed blade 10 as a whole, it is noticed that the achievements of Figs. 1-8 have linear geometry. In another embodiment, however, such as that shown in Figs. 9-10, the fixed blade 10 can have a rotational geometry. In such an embodiment, the guide groove 16 for the movable blade 40 of the blade assembly 4 may not extend linearly, as in the embodiments of Figs. 1-8, but circularly about a central axis L of the blade 10 in a tangential direction t; accordingly, the laterally / tangentially separated U-shaped teeth 12 can all extend longitudinally in a generally radial direction r. It is understood that a corresponding movable blade 40 can have a circularly curved toothed leading edge, which can be received in the direction groove 16 to be driven in continuous rotational movement (instead of alternating linearly) around the central axis L.
    [042] As in the realizations of Figs. 9-10, the circularly curved front edges 23, 33 of the first and second wall 20, 30 do not need to provide the U-shaped teeth 12 along their entire circumference. Instead, small hair-trapping holes 50 can be provided within / along at least a circumferential portion of the leading edge 23 of the first wall; a part of the opposite front edge of the second wall can simply be closed. In this way, the blade 10 can be configured to both capture the relatively long hairs between the U-shaped teeth 12, and the short hair remains in the small holes 50.
    [043] In different designs, blade 10 can be manufactured from different materials and in different ways.
    [044] In a preferred embodiment, the fixed blade 10 can be at least partially made from a metal plate. In some embodiments, the metal tips 14 of the U-shaped teeth 12 of the fixed blade 10 can be coated with a plastic layer, for example, through micro plastic modeling, in order to round them and provide them with a comfortable minimum radius for the skin to avoid skin cuts.
    [045] A method of fabricating the fixed blade 10 may include (i) providing a metal plate, (ii) marking a series of identical laterally separated grooves extending longitudinally on the plate, and (iii) pivoting / bending the U-shaped plate along a fold line, extending laterally and extending through said separate grooves. It will be clear that, in this embodiment, the metal plate, which can, but need not, be of uniform thickness, provides both the first wall 20 and the second wall 30 of the fixed blade 10, while the grooves in the plate define the spacing between the blade teeth 12. The fold line can correspond to the line defined by the front ends 14 of the U-shaped teeth 12.
    [046] Another method of fabricating the fixed blade 10 may include (i) the provision of a first metal plate with a first front edge that extends laterally; (ii) provision of a second metal plate similar in shape to the first and having a second front edge that extends laterally; and (iii) the provision of a metal strip having a lateral dimension that corresponds to that of the front edges of the first and second metal plates and a longitudinal dimension that is significantly smaller than the first and the second metal plate. The method may further include stacking the second metal plate on the first metal plate by arranging the metal strip between its front edges, so that a longitudinal cross-section of the stacked arrangement is generally U-shaped. The stacked arrangement can be fixed by means of welding, the strip between the first and the second front edge. Then, the welded front edge of the arrangement can be rounded by means of electrochemical formation. Subsequently, the U-shaped teeth can be created by forming, for example, EDM, the plurality of grooves separated laterally on the front edge of the arrangement, such grooves can extend longitudinally beyond the strip. It is understood that, in this embodiment, the first metal plate can correspond largely to the first wall 20 of the fixed blade 10, while the second metal plate can largely correspond to the second wall of the fixed blade 10 (or, as in the embodiment of Figs. 9 -10 to a circumferential flange provided on the cylindrical part of the second wall 30), and the metal strip can define the tips of the projections 26, 36 of both the first and the second wall 20, 30.
    [047] Both manufacturing methods may also include the insertion of at least one connector part 18 between the first and the second opposite wall of the fixed U-shaped blade, and weld the connector part 18 to this to fix it in the place.
    [048] In addition to the fixed blade 10, the blade assembly 4 now disclosed may further include a movable blade 40. The movable blade 40 can be configured to be slidably receivable within the direction groove 16 defined by the fixed blade 10, and include a toothed front edge 42 for linear alternation or continuous rotational movement within, and cutting cooperation with, the U-shaped teeth 12 of the fixed blade 10. It is understood that the toothed front edge of the movable blade 40 can extend along d a generally linear path in case the fixed blade 10 defines a linear guiding groove (according to Fig. 1-8), while it can extend along a curved path, in particular circular, in case the fixed blade 10 defines a groove circular direction (as shown in Figs. 9-10). In particular, in the case that the movable blade is configured for the linear alternating movement, each of the teeth of the movable blade 40 can preferably have two lateral cut faces, and the number of teeth on the movable blade can typically be less than the number U-shaped teeth on the fixed blade. To facilitate the connection of the movable blade 40 to the electric motor within compartment 2 of the hair clipper 1, the movable blade 40 can be connected to a rod of the blade 44.
    [049] In the embodiments shown in Figs. 1-8, the movable blade 40 is effectively interlocked between the first inner surfaces 22a, 32a of the first and second wall 20, 30 of the fixed blade 10; that is, the inner surfaces 22a, 32a of the walls 20, 30 tightly surround the movable blade 40 and the confine for lateral displacement movement between them. In an alternative embodiment, the movable blade 40 can be force-locked instead of snap-in. That is, the movable blade 40 can be slidably received in the targeting slot 16 between the inner surfaces 22a, 32a of the fixed blade 10, such targeting slot 16 can have a height that greatly exceeds the height / thickness of the movable blade 40. For to ensure that the movable blade is forced (slidably) in contact with the inner surface 22a of the first wall 20, a mechanical spring can be provided, for example, a compression spring arranged between compartment 2 of the hair clipper 1 and the blade shank 44.
    [050] Although the illustrative embodiments of the present invention have been described above, in part with reference to the accompanying drawings, it should be understood that the invention is not limited to these embodiments. Variations to the revealed embodiments can be understood and made by those skilled in the art in the practice of the claimed invention, from a study of the drawings, the disclosure and the attached claims. The reference throughout this specification to "the realization" or "an realization" means that a particular aspect, structure or characteristic described in connection with the realization is included in at least one realization of the fixed blade, blade set, etc. according to the present disclosure. Thus, the appearances of the phrases "in a realization" or "in realization" in different places throughout this specification are not necessarily all referring to the same realization. In addition, it is realized that the particular aspects, structures or characteristics of one or more achievements can be combined in any suitable way to form new achievements not explicitly described. ELEMENTS LIST 1 Hair clipper 2 compartment 4 Blade set 10 Fixed blade 12 U-shaped tooth 14 (front) U-shaped tooth 16 Guiding groove for the mobile blade 18 Connecting part between the first and second wall 20 First opposite / skin contact wall 22a, b First inner surface (a) and second outer surface (b) of the first wall 23 Front edge of the first wall 24 Projections of the first wall 26 Tips of the projections of the first wall 30 Second wall 32a, b First surface (a) and second surface (b) of the second wall 33 Front edge of the second wall 34 Projections of the second wall 36 Tips of the projections of the second wall 40 Movable blade 42 Front toothed edge 44 Shank, connecting to the motor 46 Recess in the movable blade for the connector part 18 50 Hair capture hole on the front edge of the second wall d Spacing between U-shaped teeth adj 1 1 Den length te in UL format Central axis of the fixed blade with circular geometry ti Thickness of the first wall t2 Thickness of the second wall w U-shaped tooth width x, r Longitudinal, radial y, t Lateral, tangential direction z Height direction / thickness
    权利要求:
    Claims (14)
    [0001]
    1. FIXED BLADE (10) FOR A BLADE SET (4) OF AN ELECTRICALLY OPERATED HAIR CUTTING (1), including a first wall (20) and a second wall (30), each wall defining a first surface (22a , 32a), a second surface (22b, 32b) opposite the first surface, and a front edge that extends laterally (23, 33) defining a plurality of projections that extend longitudinally separated laterally (24, 34), in which the the first surfaces of the first and second walls are opposite each other, at least at their front edges (23, 33), while opposing the projections along the front edges of the first and second walls are mutually connected at their ends (26, 36) to defining a plurality of teeth generally U-shaped (12), and the first surfaces of the first and second walls define a laterally extending direction groove (16) for a movable blade (40) of said blade assembly between them, characterized by the projections (24) of the first wall (20) having an average thickness (ti) that is less than an average thickness (ts) of the projections (34) of the second wall (30).
    [0002]
    2. FIXED BLADE, according to claim 1, characterized in that at least the projections (24) of the first wall (20) have an average thickness (ti) less than 200 pm.
    [0003]
    FIXED BLADE according to either of claims 1 or 2, characterized in that the first wall (20) is substantially flat.
    [0004]
    FIXED BLADE, according to either of claims 1 or 2, characterized in that the first wall (20), seen in a plane in cross-section perpendicular to the lateral direction (y, t), is curved convexly.
    [0005]
    FIXED BLADE, according to any one of claims 1 to 4, characterized in that at least one of the teeth (12), seen in a plane in cross-section perpendicular to the lateral direction (y, t), has a convexly curved tip ( 14).
    [0006]
    FIXED BLADE according to any one of claims 1 to 5, characterized in that the first and second walls (20, 30) are mutually connected by at least one discrete connector part (18) extending between their respective first surfaces (22a , 32a).
    [0007]
    FIXED BLADE, according to any one of claims 1 to 6, characterized by an average thickness of the fixed blade (10), measured between the second surfaces (22b, 32b) of the first and second walls (20, 30) in their projections (24, 34), be less than 1 mm.
    [0008]
    FIXED BLADE according to any one of claims 1 to 7, characterized in that the first and second walls (20, 30) are at least partially made of sheet metal.
    [0009]
    FIXED BLADE, according to claim 8, characterized in that at least one end (14) of a U-shaped tooth (12) of the fixed blade (10) is provided with a convexly curved plastic coating.
    [0010]
    10. FIXED BLADE according to any one of claims 1 to 9, characterized by the directional groove that extends laterally (16) extends linearly, while projections that extend longitudinally adjacent laterally (24, 34) extend substantially in parallel.
    [0011]
    11. FIXED BLADE according to any one of claims 1 to 9, characterized in that the directional groove that extends laterally (16) extends tangentially (t) around the central axis (L) along a circularly curved path, while longitudinally extending projections (24, 34) extend radially (r) in relation to the central axis (L).
    [0012]
    12. BLADE SET (4) FOR A HAIR CUTTING DEVICE (1), characterized by comprising: a fixed blade (10), as defined in any one of claims 1 to 11; and a movable blade (40) with a toothed leading edge (42), said movable blade being movably laterally arranged within the direction groove (16) defined by the fixed blade (10), so that, based on the lateral alternation or rotation of the movable blade in relation to the fixed blade, the toothed front edge (42) of the movable blade cooperates with the teeth (12) of the fixed blade to allow the cutting of the hairs caught between them in a scissors cutting action.
    [0013]
    13. HAIR CUTTING EQUIPMENT (1), characterized by comprising: a compartment (2) accommodating an engine; and a blade assembly (4), as defined in claim 12, wherein the fixed blade (10) is fixedly connected to the compartment, and the movable blade (40) is operationally connected to the motor, so that the motor is capable of alternate laterally or rotate the movable blade into the direction groove (16) of the fixed blade.
    [0014]
    14. METHOD OF MANUFACTURING THE FIXED BLADE (10), as defined in any one of claims 1 to 11, including: providing a first metal plate (20) with a first front edge that extends laterally; provision of a second metal plate (30, 33) having a second leading edge that extends laterally; provision of a metal strip (26, 36), having a lateral dimension that corresponds to that of the front edges of the first and second metal plate and a longitudinal dimension that is smaller than that of the first and second metal plates; characterized by the first metal plate (20) having an average thickness (ti) that is less than an average thickness (ts) of the second metal plate (30, 33); and stacking the second metal plate onto the first metal plate by arranging the metal strip between its front edges, so that a longitudinal cross-section of the stacked arrangement is generally U-shaped; fixing the stacked arrangement by welding the strip between the first and second front edges; and creating a U-shaped tooth (12) forming a plurality of grooves spaced laterally on the front edge of the arrangement, so that said grooves extend longitudinally beyond the strip.
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    CA3021116A1|2013-10-10|
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    MX2014011807A|2014-12-05|
    AU2013245349B2|2017-04-27|
    RU2632339C2|2017-10-04|
    PL2834052T3|2018-02-28|
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    WO2013150412A1|2013-10-10|
    RU2017130833A|2019-02-05|
    US10300618B2|2019-05-28|
    CA3021116C|2020-08-18|
    CN104245253B|2016-05-25|
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    JP2015514464A|2015-05-21|
    MX348108B|2017-05-29|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2035632A|1933-06-22|1936-03-31|Andis Mathew|Hair thinning mechanism|
    US2102529A|1935-02-07|1937-12-14|Clipshave Inc|Hair clipper|
    US2222106A|1936-12-28|1940-11-19|Knapp Monarch Co|Hair clipper|
    US2151965A|1937-04-05|1939-03-28|Clipshave Inc|Hair clipper|
    US2222107A|1938-04-11|1940-11-19|Knapp Monarch Co|Dry shaving device|
    US2426412A|1944-10-31|1947-08-26|Pinkas David|Electric shaving device with hair collecting means|
    US2573758A|1948-02-13|1951-11-06|Bailey Theodore|Dry shaver|
    CH496523A|1969-06-19|1970-09-30|Loers Finanz Ag De|Cutting head for razor or trimmer|
    JPS4724797Y1|1971-08-27|1972-08-04|
    DD111043A1|1973-12-21|1975-01-20|
    JPS52105063A|1976-02-27|1977-09-03|Matsushita Electric Works Ltd|Outer blade of reciprocating electric razor|
    JPH0113393B2|1980-08-20|1989-03-06|Hitachi Maxell|
    JPS61124281U|1985-01-24|1986-08-05|
    US4724614A|1986-04-01|1988-02-16|Wahl Clipper Corporation|Blade attachments for electric beard trimmers|
    NL8700516A|1987-03-04|1988-10-03|Philips Nv|CUTTING UNIT.|
    JPH09290076A|1996-04-26|1997-11-11|Sanyo Electric Co Ltd|Inner blade for reciprocating electric razor|
    KR100447912B1|1996-04-26|2004-11-03|산요덴키가부시키가이샤|Electric shaver and method of manufacturing outer blade|
    JP2001204979A|2000-01-26|2001-07-31|Matsushita Electric Works Ltd|Blade block of hair cutter|
    JP4496674B2|2001-06-14|2010-07-07|パナソニック電工株式会社|Trimmer blade and electric appliance using trimmer blade|
    JP2003053063A|2001-08-10|2003-02-25|Matsushita Electric Works Ltd|Comb-shape fixed blade for electric razor|
    GB2425277B|2005-02-11|2009-12-02|Gillette Co|Electric razor assembly|
    JP4743624B2|2006-06-21|2011-08-10|九州日立マクセル株式会社|Electric razor|
    KR100900123B1|2006-08-31|2009-06-01|파나소닉 전공 주식회사|Hair clipper|
    US8769828B2|2007-01-14|2014-07-08|Specialife Industries Limited|Blade set for hair clippers|
    ITMI20070304A1|2007-02-16|2008-08-17|Perfect Steam Appliances Ltd|MANUAL MACHINE FOR CUTTING THE HAIR.|
    WO2009024900A1|2007-08-17|2009-02-26|Koninklijke Philips Electronics N.V.|Hair trimming device|
    US7841091B2|2007-11-15|2010-11-30|Wahl Clipper Corporation|Bladeset for a hair cutting apparatus|
    AT532613T|2008-01-29|2011-11-15|Braun Gmbh|CUTTING COMB, HAIR CUTTING MACHINE WITH A CUTTING COMB AND MANUFACTURING METHOD FOR A CUTTING COMB|
    DE102008046072A1|2008-09-05|2010-03-11|Braun Gmbh|Shaving head for a razor|
    US8726517B2|2010-01-11|2014-05-20|Specialife Industries Limited|Trimmer mechanism, hair trimmer, and hair trimmer attachment|
    WO2011098864A1|2010-02-12|2011-08-18|设计制造有限公司|Nose and ear hair trimmer|
    CN201881404U|2010-12-01|2011-06-29|厦门优尔电器有限公司|Outer knife of reciprocating type electric shaver with reinforcing structure|
    JP5879531B2|2011-03-17|2016-03-08|パナソニックＩｐマネジメント株式会社|Electric razor|
    TR201911089T4|2014-07-04|2019-08-21|Koninklijke Philips Nv|Fixed blade and related manufacturing method for it.|
    EP3288727B1|2015-04-28|2019-09-04|Koninklijke Philips N.V.|Blade set and hair cutting appliance|EP2857158B1|2013-10-01|2017-05-10|Koninklijke Philips N.V.|Blade set and hair cutting appliance|
    EP2857155A1|2013-10-01|2015-04-08|Koninklijke Philips N.V.|Blade set and hair cutting appliance|
    EP2875915B1|2013-11-22|2019-05-22|Koninklijke Philips N.V.|Linkage unit and hair cutting appliance|
    EP2875916B2|2013-11-22|2021-09-29|Koninklijke Philips N.V.|Mounting unit and hair cutting appliance|
    EP2875917A1|2013-11-22|2015-05-27|Koninklijke Philips N.V.|Hair cutting appliance and blade set|
    EP2875919A1|2013-11-22|2015-05-27|Koninklijke Philips N.V.|Hair cutting appliance, receptacle and connector plug|
    BR112016023795B1|2014-04-18|2021-06-22|Koninklijke Philips N.V.|HAIR CUTTING APPLIANCE AND ATTACHABLE REMOVABLE COMB|
    TR201807732T4|2014-04-18|2018-06-21|Koninklijke Philips Nv|Cutlery, hair clipper and related manufacturing method.|
    EP3131714B1|2014-04-18|2018-06-13|Koninklijke Philips N.V.|Blade set, hair cutting appliance, and related manufacturing method|
    ES2684332T3|2014-04-18|2018-10-02|Koninklijke Philips N.V.|Blade set, hair cutting apparatus and related manufacturing method|
    JP6626455B2|2014-04-18|2019-12-25|コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ．|Coupling mechanism for drive train of hair cutting device|
    TR201911089T4|2014-07-04|2019-08-21|Koninklijke Philips Nv|Fixed blade and related manufacturing method for it.|
    CN205238089U|2014-09-18|2016-05-18|皇家飞利浦有限公司|Fixed blade and blade group|
    US10406702B2|2014-09-18|2019-09-10|Koninkliike Philips N.V.|Blade set, cutting appliance, and related manufacturing method|
    BR112017017962A2|2015-02-25|2018-04-10|Koninklijke Philips Nv|stationary blade, blade assembly, and hair clipper|
    US10913170B2|2015-02-26|2021-02-09|Koninklijke Philips N.V.|Attachment comb and hair cutting appliance|
    EP3288727B1|2015-04-28|2019-09-04|Koninklijke Philips N.V.|Blade set and hair cutting appliance|
    JP6585735B2|2015-05-19|2019-10-02|コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ．|Method for manufacturing stationary blade and stationary blade|
    DE202016100999U1|2016-02-25|2016-03-31|Koninklijke Philips N.V.|Additional comb and hair clipper|
    CN106313140A|2016-11-21|2017-01-11|珠海新秀丽家居用品有限公司|Knife of sandwich structure and personal care hair shear with same|
    EP3388208A1|2017-04-10|2018-10-17|Koninklijke Philips N.V.|Stationary blade, blade set and hair cutting appliance|
    EP3388207A1|2017-04-10|2018-10-17|Koninklijke Philips N.V.|Stationary blade, blade set and hair cutting appliance|
    EP3388209A1|2017-04-11|2018-10-17|Koninklijke Philips N.V.|Stationary blade, blade set, and manufacturing method|
    EP3388206A1|2017-04-14|2018-10-17|Koninklijke Philips N.V.|Attachment comb, cutting head and hair cutting appliance|
    CN208342890U|2017-05-15|2019-01-08|A·库班尼|Hair cutting device|
    EP3409432A1|2017-05-30|2018-12-05|Koninklijke Philips N.V.|Stationary blade, blade set, and manufacturing method|
    EP3415288A1|2017-06-14|2018-12-19|Koninklijke Philips N.V.|Hair cutting system and attachment|
    EP3461602A1|2017-10-02|2019-04-03|Koninklijke Philips N.V.|Stationary blade and manufacturing method|
    EP3466619A1|2017-10-05|2019-04-10|Koninklijke Philips N.V.|Blade set and manufacturing method|
    EP3566828A1|2018-05-08|2019-11-13|Koninklijke Philips N.V.|Stationary blade, blade set and hair cutting appliance|
    EP3946847A1|2020-04-14|2022-02-09|Manscaped, LLC|Grooming device|
    法律状态:
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-05-19| B09A| Decision: intention to grant|
    2020-07-28| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 26/03/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    EP12162928.1|2012-04-03|
    EP12162928|2012-04-03|
    PCT/IB2013/052379|WO2013150412A1|2012-04-03|2013-03-26|Blade set for hair cutting appliance and method for its manufacture|
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